This pressure switch comprises: a metal pressure-resistant container; conductive terminals provided through the pressure-resistant container and fixed in an airtight and insulated state with respect to the pressure-resistant container; a contact mechanism electrically connected to the conductive terminals and provided inside the pressure-resistant container; a diaphragm that covers an opening portion of the pressure-resistant container and is attached to the pressure-resistant container in an airtight state, the diaphragm operating at or above a predetermined operation pressure and being capable of returning at a return pressure lower than the operation pressure; and a pressing member that opens and closes the contact mechanism by transmitting displacement due to the operation and return of the diaphragm. The pressing member includes a first pressing member fixed to the contact mechanism side and a second pressing member in contact with the diaphragm, and the first pressing member and the second pressing member are in contact with each other so as to be movable in a tilting direction. The pressing member opens and closes the contact mechanism by receiving the displacement of the diaphragm by the second pressing member, transmitting the displacement to the contact mechanism via the first pressing member, and pressing the contact mechanism.
H01H 35/34 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide actionnés par un diaphragme
This motor protector unit comprises a motor protector, a motor protector holder, and a connecting structure that connects and secures the motor protector and the motor protector holder. The motor protector includes: a metal hermetic container configured to be airtight and including a housing having an opening and an internal space, and a lid plate provided on the housing to cover the opening; two conductive terminal pins provided on the lid plate via an electrically insulating filler material, each pin having one end inserted into the hermetic container and the other end exposed on the outside of the hermetic container; and an opening/closing mechanism provided inside the hermetic container to open or close an electrical connection between the two conductive terminal pins. The motor protector holder includes: a covering part into which at least a part of the motor protector is fitted; and wing parts formed in the shape of plates extending out at right angles to the longitudinal direction of the conductive terminal pins.
An airtight terminal includes: a metal substrate in which a plurality of through-holes are formed; a plurality of conductive terminals each introduced through the respective through-holes; a glass filling material that has an electrical insulating property, a protective member with an electrical insulating property that covers around the conductive terminal; and a locking portion that is provided in the conductive terminal or the glass filling material. The protective member includes a holding portion that is provided in the protective member on a side opposite to a side of the metal substrate, is formed to have a smaller inner diameter than an outer diameter of the conductive terminal, and holds the conductive terminal, a deformable portion that is provided on the side of the metal substrate and is elastically deformable, and a restricting portion that restricts movement of the protective member when the protective member is attached to the conductive terminal.
A device for attaching a motor protector includes: an accommodating member; and a fixation member to which the accommodating member accommodating a motor protector is detachably attached. The fixation member includes a base portion and at least two arm portions. The two arm portions sandwich and hold the accommodating member once the accommodating member is pushed to inside of the two arm portions. The fixation member further includes assisting portions that extend from the base portion to a side of the accommodating member, are caused to pass through assisting portion insertion holes provided in the accommodating member and stick out inside the accommodating member and at positions where the assisting portions sandwich the accommodating member with the arm portions, and cause an elastic force to act on the accommodating member in a case where the accommodating member moves in a direction that is parallel to the base portion.
A pressure switch includes a pressure-resistant container, a contact mechanism, at least one airtight terminal, a diaphragm that is operated at first operating pressure and is restorable at restoring pressure lower than first operating pressure, a first pressing member that presses the contact mechanism due to the operation of the diaphragm and switches the contact mechanism to an open state, a pressure-receiving deformation member that is deformed and operated at second operating pressure higher than the first operating pressure, and is not restored even when the pressure decreases to atmospheric pressure after the operation at the second operating pressure, and a second pressing member that presses the contact mechanism due to the operation of the pressure-receiving deformation member and switches the contact mechanism to the open state. The first pressing member and the second pressing member are composed of an inorganic material without containing any organic material.
A capacitive liquid sensor (10) includes a first frame (301) and a second frame (302) made of a metal material, and a plurality of first electrode plates (401) and second electrode plates (402) made of metal plates. The first frame and the second frame each have a through portion (31) through which the first electrode plate and the second electrode plate are passed, and are arranged to face each other. The first electrode plate and the second electrode plate have a detection part (41) and two fixing parts (42), are formed in a cross shape, and are alternately arranged facing each other. In the first electrode plate, the fixing part of the first electrode plate is fixed to the first frame in a state where the detection part of the first electrode plate is passed through the through portion of the first frame and the second frame. In the second electrode plate, the fixing part of the second electrode plate is fixed to the second frame in a state where the detection part of the second electrode plate is passed through the through portion of the second frame and the first frame.
G01N 27/22 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la capacité
G01F 23/263 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques en mesurant les variations de capacité de condensateurs
7.
MOTOR PROTECTOR, HOLDER FOR MOTOR PROTECTOR, METHOD FOR ATTACHING MOTOR PROTECTOR, AND ELECTRIC COMPRESSOR
This motor protector (20) comprises: an airtight container (30) that is made of metal; two electroconductive terminal pins (40); two stationary contact points (21); two movable contact points (22); a heat-sensitive movable plate (25) that is provided in the interior of the airtight container and has the two movable contact points attached thereto, the heat-sensitive movable plate causing the movable contact points to make contact with the stationary contact points and thereby close the two stationary contact points during a normal time when not in operation, and deforming in a direction so as to separate the movable contact points from the stationary contact points and thereby open the stationary contact points when the atmospheric temperature in the interior of the airtight container reaches a prescribed temperature, causing the heat-sensitive movable plate to operate; and a heat-emitting member (50) that is provided to the exterior of the airtight container and in contact with the electroconductive terminal pins, the heat-emitting member being configured from a different material than the electroconductive terminal pins, being positioned between the electroconductive terminal pins and windings of a motor, and emitting heat due to an electric current flowing therethrough.
H02K 11/20 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour la mesure, la surveillance, les tests, la protection ou la coupure
This thermal protector comprises: a base member and a cover member that are made of resin; a stationary contact point and a movable contact point that are provided in a housing space; a stationary member that is provided with the stationary contact point; a movable member that is provided with the movable contact point; and a heat-responsive element that is housed in the housing space and, by being deformed due to heat, causes a force to act on the movable member in a direction such that the movable contact point separates from the stationary contact point. The base member has a protrusion that is provided to the base member and protrudes from a surface of the base member. The cover member has a through-hole that is formed at a position that corresponds to the protrusion and is formed so as to penetrate the cover member. The base member and the cover member are fixed to each other by having the protrusion be inserted through the through-hole and protrude to the outside of the cover member, and having a heat crimp formed by heat crimping in the protruding portion.
A motor protector according to an embodiment includes a hermetic container, two conducting terminal pins, two fixed contact point support bodies, two fixed contact points, two movable contact points, and a thermal reaction plate. The fixed contact point support body is configured, by bending work on a plate material, to integrally include a conducting terminal pin side region, a fixed contact point side region arranged such that a space region is sandwiched therebetween and provided with a fixed contact point, and a connection region provided across the space region and connecting the conducting terminal pin side region and the fixed contact point side region. The total width dimension of the connection region is set to be smaller than the total width dimension of the space region.
H02K 5/10 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p. ex. de l'eau ou des doigts
H02K 5/22 - Parties auxiliaires des enveloppes non couvertes par les groupes , p. ex. façonnées pour former des boîtes à connexions ou à bornes
H02K 11/25 - Dispositifs pour détecter la température ou actionnés par des valeurs de cette variable
This airtight terminal (1) comprises: a metal substrate (10) in which multiple through-holes (12) are formed; multiple electrically conductive terminals which are inserted through the respective through-holes; an electrically insulating glass filler (30) which is filled between the through-holes and the electrically conductive terminals and seals between the through-holes and the electrically conductive terminals; a protective member (60) which is formed from an electrically insulating elastic material and covers around the electrically conductive terminals that are inserted therein; and a locking part (2, 3) which is disposed on the electrically conductive terminals or on the glass filler. The protective member has: a holding part (63) which is disposed on the opposite side of the protective member from the metal substrate side, is formed to have a smaller inner diameter than the outer diameter of the electrically conductive terminals, and holds the electrically conductive terminals; a deformable part (621) which is disposed on the metal substrate side with respect to the holding part and can elastically deform in a direction in which the deformable part is compressed as the deformable part comes into contact with the metal substrate and/or with the glass filler when the protective member is attached to the electrically conductive terminals; and a restriction part (65) which restricts the protective member from moving toward the metal substrate side by coming into contact with the locking part when the protective member is attached to the electrically conductive terminals.
A device for attaching a motor protector comprises a housing member and a fixing member to which the housing member, which houses the motor protector, is detachably attached. The fixing member has a pedestal and at least two arms. The two arms grip and hold the housing member when the housing member is pushed inside the two arms. The fixing member also has an auxilliary portion that passes through an auxilliary portion insertion hole provided in the housing member and protrudes to the inside of the housing member at a position where the housing member is sandwiched by the arms when the fixing member is extended toward the housing member from the pedestal and the housing member is fitted to the fixing member, and that applies an elastic force to the housing member to restrict movement of the housing member when the housing member has moved in a direction parallel to the pedestal.
H02K 11/25 - Dispositifs pour détecter la température ou actionnés par des valeurs de cette variable
F04B 39/00 - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04B 39/14 - Dispositions permettant un montage ou démontage commodes
This pressure switch comprises: a pressure-resistant container; a contact mechanism; at least one airtight terminal; a diaphragm that operates at a first operating pressure and is able to return at a return pressure lower than the first operating pressure; a first pressing member that presses the contact mechanism due to the operation of the diaphragm and switches the contact mechanism to an open state; a pressure-receiving deformation member that deforms and operates at a second operating pressure higher than the first operating pressure, and that does not return even when the pressure decreases to atmospheric pressure after the operation at the second operating pressure; and a second pressing member that presses the contact mechanism due to the operation of the pressure-receiving deformation member and switches the contact mechanism to the open state. The first pressing member and the second pressing member are configured from an inorganic material and do not include organic material.
F04B 39/00 - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
H01H 35/34 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide actionnés par un diaphragme
The motor protector according to an embodiment comprises a hermetic container, two conducting terminal pins, two fixed contact point support bodies, two fixed contact points, two movable contact points, and a thermal reaction plate. The fixed contact point support bodies integrally have conducting terminal pin side regions, fixed contact point side regions, and a connection region by performing bending work on a plate material, wherein: the fixed contact point side regions are disposed sandwiching a space region and are provided with the fixed contact points; and the connection region is provided over the space region and connects the conducting terminal pin side regions and the fixed contact point side regions to each other. The sum of the width dimensions of the connection region is set to be smaller than the sum of the width dimensions of the space region.
H02K 11/20 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour la mesure, la surveillance, les tests, la protection ou la coupure
A DC circuit breaker includes a case, two fixed contacts, two movable contacts, a bypass plate electrically connecting the two movable contacts, a moving block to move the bypass plate, a moving block biasing member to bias the moving block in a direction away from the fixed contacts, a thermally responsive member, a latch, a shutter, and a shutter biasing member. The thermally responsive member deforms when an installation surface equals or exceeds a prescribed temperature. The latch restricts movement of the moving block by locking the moving block when the thermally responsive member is in a pre-deformation state. The latch cancels the restriction of the movement the thermally responsive member deforms. The shutter is insertable between the fixed contacts and the movable contacts. The shutter biasing member constantly biases the shutter in a direction to be inserted between the fixed contacts and the movable contacts.
H01H 33/04 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant
H01H 33/59 - Circuits non adaptés à une application particulière de l'interrupteur et non prévus ailleurs, p. ex. pour assurer le fonctionnement de l'interrupteur en un point déterminé de la période du courant alternatif
The direct-current circuit breaker (10) is provided with: a case (20); two fixed contacts (33); two movable contacts (42); a bypass plate (41) electrically connecting the two movable contacts; a moving block (43) for causing the bypass plate to move; a moving block biasing member (434) for biasing the moving block at all times in a direction away from the fixed contacts; a thermally-responsive member (61) which is disposed at a position facing a placement surface and which deforms when the placement surface reaches a predetermined temperature or higher; a latch (51) which has a locking part for locking the moving block while the thermally-responsive member is in the pre-deformed state to restrict movement of the moving block and which is actuated when the thermally-responsive member deforms so that the locking part separates from the moving block and releases the restriction on the movement of the moving block; a shutter (73) to be inserted between the fixed contacts and the movable contacts when the movable contacts separate from the fixed contacts; and a shutter biasing member (72) for biasing the shutter at all times in the direction in which the shutter is inserted between the fixed contacts and the movable contacts.
A pressure switch includes an airtight metallic pressure vessel. A contact mechanism is normally in a closed state and assumes an open state when a pressing force acts thereon. An airtight terminal, provided through an end surface section of the pressure vessel, is connected to the contact mechanism. A metallic first diaphragm is secured to a surface section at one end of the pressure vessel, is moved by a first moving pressure, and is reset by a reset pressure that is lower than the first moving pressure. A first plunger causes the contact mechanism to switch the open state. A metallic second diaphragm is secured to pressure vessel, is moved by a second moving pressure that is higher than the first moving pressure, and is not reset under at least an atmospheric pressure. A second plunger causes the contact mechanism to switch to the open state.
H01H 35/34 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide actionnés par un diaphragme
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
17.
PRESSURE SWITCH, AND HERMETICALL SEALED ELECTRIC COMPRESSOR
This pressure switch comprises: an airtight metallic pressure vessel; a contact mechanism provided inside the pressure vessel which is normally in a closed state and which adopts an open state when a pressing force acts thereon; at least one airtight terminal provided through an end surface section of the pressure vessel and connected to the contact mechanism; a metallic first diaphragm attached airtight to a surface section at one end of the pressure vessel which is moved by a first moving pressure and which is returned by a return pressure that is lower than the first moving pressure; a first plunger provided through the surface section at the one end of the pressure vessel, caused by the movement of the first diaphragm to press the contact mechanism which then switches to an open state; a metallic second diaphragm attached airtight to a surface section at the other end of the pressure vessel which is operated by a second moving pressure that is higher than the first moving pressure and which cannot be returned under atmospheric pressure; and a second plunger provided through the surface section at the other end of the pressure vessel, caused by the movement of the second diaphragm to press the contact mechanism which then switches to the open state.
H01H 35/34 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide actionnés par un diaphragme
A compressor of the present invention comprises a sealed container, a compression element that is installed inside the sealed container and compresses a refrigerant fluid, an electric element that is installed inside the sealed container and serves as a drive source for the compression element, and a pressure switch that is installed inside the sealed container and opens a normally-closed contact when the pressure inside the sealed container equals or exceeds a first set pressure. The pressure switch is connected to the entirety of a connection part of windings that constitute part of the electric element.
F04B 49/02 - Commande d'arrêt, de démarrage, de décharge ou de ralenti
H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
A heat-reactive switch includes an airtight container with a housing and a lid plate, two conductive terminal pins fixed in through-holes in the lid plate, a fixed contact point fixed on one of the conductive terminal pins, a heater connected to the other conductive terminal pin and to the lid plate, a heat-reactive plate connected to the housing internal surface, the bending direction becoming inverted at a predetermined temperature, and a mobile contact point provided at the end of the heat-reactive plate. A heating element has a plurality of serpentine portions made from a metal plate in ribbon form, disposed between the lid plate and the heat-reactive plate so as to be parallel thereto. At least two of the serpentine portions are disposed to face each other while sandwiching the conductive terminal pin. Each portion follows the inner peripheral surface of the housing and have planar portions facing each other.
This invention is a thermally actuated switch in which a sealed vessel contains a fixed contact and a heat-sensitive-plate assembly that has a structure in which a movable contact is anchored to one lengthwise end of a heat-sensitive plate, one end of a metal support is anchored to the other end of said heat-sensitive plate, and the heat-sensitive plate is then drawn. The heat-sensitive-plate assembly has a dish-shaped drawn section near the middle of the heat-sensitive plate and has folded sections between the area where the movable contact is anchored and the widthwise edges of the heat-sensitive plate and also between the area where the metal support is anchored and the widthwise edges of the heat-sensitive plate.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 11/00 - Appareillages ou procédés spécialement adaptés à la fabrication d'interrupteurs électriques
H01H 37/72 - Interrupteurs dans lesquels le mouvement d'ouverture et le mouvement de fermeture d'un contact sont effectués respectivement par chauffage et refroidissement ou vice versa
H01H 37/52 - Éléments thermosensibles actionnés par la déviation d'un bilame
In this thermal response switch, a heating element of a heater has a serpentine portion comprising a strip-shaped metal plate. The serpentine portion is bent twice with respect to a first reference axis and a second reference axis that extend in the length direction of a housing, thereby being provided with: an outer perpendicular portion that is perpendicular to the inner surface of the lid plate and on an outer side from the first reference axis; an inner perpendicular portion that is perpendicular to the inner surface of the lid plate and on an inner side from the second reference axis; and a middle perpendicular portion that is perpendicular to the inner surface of the lid plate and between the first reference axis and the second reference axis in a sandwiched state by the outer perpendicular portion and the inner perpendicular portion. Among two extremity portions in the width direction of the middle perpendicular portion, at the extremity portion on the side where no other heating element is present, the middle perpendicular portion has a narrow width portion that is narrower than the width of the middle perpendicular portion.
H01H 37/14 - Moyens pour régler la température provoquant les positions "marche" ou "arrêt" par radiateur électrique anticipatif
F04B 39/00 - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04C 29/00 - Parties constitutives, détails ou accessoires de pompes ou d'installations de pompage spécialement adaptées pour les fluides compressibles non couverts dans les groupes
22.
Thermally responsive switch and method of manufacturing same
A thermally responsive switch is provided with a sealed container having a housing and a cover plate secured to the housing; a couple of conductive thermal pins inserted into a couple of through holes provided on the cover plate and secured by an insulative filler; a stationary contact secured to one of the conductive thermal pins inside the container; a heater having one end connected to the other of the conductive terminal pins inside the container and the other end connected to the cover plate; a thermally responsive plate having one end connected to the housing and being configured to invert a direction of curvature thereof at a predetermined temperature; and a movable contact provided on the other end of the thermally responsive plate. The through holes are configured by cylindrical portions, only the cylindrical portions, the filler, and the conductive terminal pins being covered by an insulative resin.
H01H 9/04 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes
H01H 3/00 - Mécanismes pour actionner les contacts
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 71/20 - Mécanismes électrothermiques avec masse fusible
H01H 81/02 - Interrupteurs de protection dans lesquels les contacts sont normalement fermés, mais sont ouverts et fermés d'une façon répétée aussi longtemps que la cause persiste qui crée le courant excessif, p. ex. pour limiter le courant actionnés électrothermiquement
H01H 85/00 - Dispositifs de protection dans lesquels le courant circule à travers un organe en matière fusible et est interrompu par déplacement de la matière fusible lorsqu'il devient excessif
23.
Thermal switch, method of manufacturing the same and device for adjusting height of movable contact
A thermal switch includes a thermally responsive plate assembly including a metal support deforming from an initial shape before a header plate assembly is secured to a housing assembly, with a result that a position of a movable contact in the housing assembly is adjusted so as to be within a predetermined height range relative to an open end of a housing. A contact pressure of switching contacts after the assembling is produced by the height adjustment, and subsequently, a neighborhood of a part of the housing to which part the thermally responsive plate assembly is secured is deformed, so that an operating temperature is calibratable.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 37/12 - Moyens pour régler la température provoquant les positions "marche" ou "arrêt"
H01H 37/20 - Moyens pour régler la température provoquant les positions "marche" ou "arrêt" en variant la position de l'élément thermique par rapport au socle ou à l'enveloppe de l'interrupteur
H01H 37/26 - Moyens pour régler la température provoquant les positions "marche" ou "arrêt" par réglage de la butée pour la position "arrêt" du contact mobile
This heat-reactive switch comprises: an airtight container constituted from a metal housing and a lid plate; two conductive terminal pins, which are fixed in an airtight manner in two through-holes provided on the lid plate; a fixed contact point, which is fixed on one of the conductive terminal pins; a heater, whereof one end is connected to the other conductive terminal pin, and the other end is connected to the lid plate; a heat-reactive plate, whereof one end is connected to the housing internal surface, and whereof the bending direction becomes inverted at a predetermined temperature; and a mobile contact point provided at the other end of the heat-reactive plate, constituting a switch contact together with the fixed contact point. A heating element of the heater has a plurality of serpentine portions comprising a metal plate in ribbon form, and is disposed between the lid plate and the heat-reactive plate so as to be parallel thereto. Of the serpentine portions, at least two are disposed so as to face each other while sandwiching the conductive terminal pin, each being disposed so as to follow the inner peripheral surface of the housing and having ribbon-shaped planar portions facing each other by being folded using as the reference a reference axis extending in the length direction of the housing.
This invention is a thermally actuated switch in which a sealed vessel contains a fixed contact and a heat-sensitive-plate assembly that has a structure in which a movable contact is anchored to one lengthwise end of a heat-sensitive plate, one end of a metal support is anchored to the other end of said heat-sensitive plate, and the heat-sensitive plate is then drawn. The heat-sensitive-plate assembly has a dish-shaped drawn section near the middle of the heat-sensitive plate and has folded sections between the area where the movable contact is anchored and the widthwise edges of the heat-sensitive plate and also between the area where the metal support is anchored and the widthwise edges of the heat-sensitive plate.
An electrostatic capacitance fluid level sensor includes a hermetic terminal having two terminal pins inserted through a metal base, a detection device including two electrodes for fluid level detection by electrostatic capacitance and two connecting terminals configured to fix the pins to the electrodes respectively. The connecting terminals are formed into such a shape as to include parts parallel to the electrodes and parts orthogonal to the electrodes by bending the terminals at bends, respectively. The parallel parts are fixed to sides of the electrodes opposed to sides of the electrodes facing each other, respectively. The orthogonal parts are fixed to the pins respectively. One of the terminals has a larger thickness than the other thereby to have a sufficient stiffness to hold the detection device. At least one of the terminals is deformable by a weaker force than a force causing the electrodes to deform.
G01F 23/26 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques
This thermoresponsive switch is provided with: a sealed container constituted of a metal housing and cover plate; two conductive terminal pins affixed air-tightly in two through holes provided in the cover plate; a fixed contact affixed to one of the conductive pins; a heater one end of which is connected to one end of the other conductive terminal pin and the other end of which is connected to the cover plate; a thermoresponsive plate one end of which is connected to the inside surface of the housing, the direction of curvature of said thermoresponsive plate reversing at a prescribed temperature; and a movable contact provided on the other end of the thermoresponsive plate and constituting a switch contact along with the fixed contact. The through holes are constituted of a cylindrical part protruding to the outside of the cover, and only the cylindrical part, filler material and conductive pins are covered with an electrically insulating resin.
The present invention is a thermal switch (1) that, by means of deforming a metal support body (10) of a thermally actuated plate assembly (7) from an initial shape before adhering a lid plate assembly (6) to a housing assembly (5), adjusts in a manner so that the position of a mobile contact point (9) in the housing assembly (5) is in a predetermined height range with respect to the open end of a housing (3), generates contact pressure between the post-assembly open/closed contact points by means of the height adjustment, and then can calibrate the operating temperature by deforming the vicinity of the adhesion point of the thermally actuated plate assembly (7) of the housing (3).
Disclosed is an electrostatic capacitative liquid surface sensor (1) wherein an electrode plate (7) for liquid surface detection is provided on a conductive pin (6) provided on a gas-tight terminal (2). The liquid surface detection section provided on the gas-tight terminal is constituted as a detection section unit (3) comprising two electrodes (7) and an electrically insulating spacer (8) whose positional relationship with the electrodes is fixed. At least one connecting terminal (9) whereby said detection section unit is fixedly connected to the conductive pin of the gas-tight terminal is made to be capable of being deformed by a weaker force than would create deformation of said electrode. The stress acting on the detection section unit is dispersed/buffered by deformation of the connecting terminal and so can prevent deformation of the electrode constituting the detection section.
G01F 23/26 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques
A protector for a three-phase electric motor has a container with a housing and a metal plate secured thereto. A protrusion is provided in the housing. Three conductive terminal pins, each with a fixed contact, protrude into the housing through the metal plate. A thermally responsive plate is connected to the three moveable contacts. The thermally responsive plate is dish shaped and reverses its direction of curvature at a predetermined temperature. Three moveable contacts are secured to the thermally responsive plate. An elastic member extends between the protrusion and the thermally responsive plate. A rotation member prevents the thermally responsive plate from rotating, thereby maintaining the moveable contacts in opposition to the fixed contacts. The conductive terminal pins are located at a neutral point side of phase windings of a three-phase motor so that AC current flowing into the three-phase motor is interrupted.
H01H 37/74 - Interrupteurs dans lesquels uniquement le mouvement d'ouverture ou uniquement le mouvement de fermeture d'un contact est effectué par chauffage ou refroidissement
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 71/00 - Détails des interrupteurs ou relais de protection compris dans les groupes
A thermally responsive switch includes a hermetic container including a housing and a header plate hermetically secured to an open end of the housing, a conductive terminal pin inserted through the header plate, a conductive pin, a thermally responsive plate having one of two ends fixed to the terminal pin, a movable contact secured to the other end of the thermally responsive plate, and a fixed contact fixed via an electrical conductor to the terminal pin, the conductor having a fuse part and a heater. The fixed contact is fixed to a ceramic member disposed between the container and the fixed contact. The housing includes a bottom surface including both lengthwise ends between which the conductive pin is interposed. Both ends of the housing bottom surface are deformed axially relative to the conductive pin from an initial state, so that an operating temperature of the switch is calibratable.
A thermally responsive switch includes an airtight container including a metal housing and a header plate, conductive terminal pins airtightly fixed to the header plate, a fixed contact fixed to the conductive terminal pin, a thermally responsive plate one end of which is conductively connected to and fixed to the inner surface of the airtight container and the bending direction of which is reversed at a predetermined temperature, and a movable contact fixed to the other end of the thermally responsive plate. In the thermally responsive switch, the movable contact and the fixed contact are composed of a silver tin oxide based contact and gas containing 50% or more and 95% or less of helium is encapsulated in the airtight container in such a manner that gas pressure is equal to or more than 0.35 and equal to or less than 0.7 at ordinary temperature.
A sealed electric compressor having a normally-off type pressure switch and a fuse element. The pressure switch is placed in a sealed housing, connected parallel to a main winding of an electric motor, and, when the pressure of refrigerant in the sealed housing is abnormally high, activates to short-circuit the main winding. The fuse element is connected in series to the main winding and an auxiliary winding of the electric motor and interrupts conduction of electricity to the electric motor when an excess current that is produced when the pressure switch short-circuits the main winding flows.
H01H 85/04 - Fusibles, c.-à-d. organes épuisables du dispositif de protection, p. ex. cartouches
H01H 35/24 - Interrupteurs actionnés par le changement de pression du fluide, par les ondes de pression du fluide, ou par le changement d'écoulement du fluide
A protective device of three-phase motor comprises a protrusion (35) provided in a housing (22) constituting an enclosed container (21), three conductive terminal pins (26) secured airtightly to a metal plate (23) constituting the enclosed container (21), three fixed contacts (27) bonded to the conductive terminal pin (26), a thermal response plate (32) drawn into the shape of a plate and reversing the curving direction at a predetermined temperature, three movable contacts (33) bonded to the thermal response plate (32) and constituting three pairs of opening/closing contact along with the fixed contacts (27), and a resilient member (34) for clamping the central portion of the thermal response plate (32) between the protrusion (35) and urging the thermal response plate (32) in the direction receding from the fixed contact (27).
A thermally responsive switch includes a container including a metal housing and a header plate, at least one conductive terminal pin inserted through a hole of the header plate, a fixed contact fixed to the terminal pin, a thermally responsive plate having one of two ends conductively connected via a support to an inner surface of the container and reversing a direction of curvature at a predetermined temperature, and at least one movable contact electrically conductively secured directly to the other end of the thermally responsive plate. Each contact is comprised of a silver-cadmium oxide system contact. The container is filled with a gas containing helium ranging from 50% to 95% so that an internal pressure of the container ranges from 0.38 atmosphere to 0.68 atmosphere at room temperature such that arc generated during opening of the contacts moves on surfaces of the contacts without spreading from the contacts.
A thermally responsive switch includes a hermetically sealed container including a metal housing and a header plate, at least one conductive terminal pin hermetically fixed in a through hole, a fixed contact fixed-to the terminal pin in the container, a thermally responsive plate having one end connected via a support to an inner surface of the container and reversing a curvature direction at a predetermined temperature, and at least one movable contact electrically conductively secured to the other end of the thermally responsive plate. Each contact includes a silver-tin oxide-indium oxide system contact. The container is filled with a gas containing helium ranging from 50% to 95% so that an internal pressure of the container ranges from 0.3 to 0.6 atmosphere at room temperature.
A thermally-actuated switch (1) comprises a movable contact (30) fixed to the other end of a thermally-actuated plate (29) and a fixed contact (34) which is conductively connected with a conductive pin (22) through a conductor (33) having a fuse part (33B) and a heater part (33A) to constitute a pair of switching contacts with the movable contact (30). The thermally-actuated switch (1) is used for disconnecting an AC current flowing to a motor (5) inside a sealed electric compressor (2). The fixed contact (34) is fixed to an electrically insulating ceramic member (32) disposed between the fixed contact (34) and a sealing container (19).
H01H 37/30 - Moyens pour régler la température provoquant les positions "marche" ou "arrêt" en variant la position de l'ensemble des contacts par rapport au socle ou à l'enveloppe de l'interrupteur
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
A thermally-actuated switch (1) comprises an airtight container (2) comprising a metal housing (3) and a lid plate (4), conductive terminal pins (10A, 10B) airtightly fixed to the lid plate (4), a fixed contact (8) fixed to the conductive terminal pin (10A), a thermally-actuated plate (6) one end of which is conductively connected to and fixed to the inner surface of the airtight container (2) and the bending direction of which is reversed at a predetermined temperature, and a movable contact (7) fixed to the other end of the thermally-actuated plate (6). In the thermally-actuated switch (1), the movable contact (7) and the fixed contact (8) are composed of a silver tin oxide based contact and gas containing 50% or more and 95% or less of helium is encapsulated in the airtight container (2) in such a manner that gas pressure is equal to or more than 0.3 and equal to or less than 0.8 at ordinary temperature.
A cooling medium sensor attaching structure comprises T-shaped joints (3, 8, 12, 14) in which one end of a main pipe portion (20) is a first connection portion (22), the other end of the main pipe portion is a sensor attaching portion (23), and a branched pipe portion (21) branched from the main pipe portion (20) is a second connection portion (24), and a cooling medium sensor (26) airtightly attached to the sensor attaching portion in such a manner that a thermistor (25) is housed in the sensor attaching portion (23). In the structure, the sensor attaching portion (23) side of the main pipe portion (20) is arranged to be higher than the first connection portion (22) side thereof in a state in which the first connection portion (22) and the second connection portion (24) of the T-shaped joints (3, 8, 12, 14) are connected with the piping of a cooling cycle (C).
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 7/22 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs l'élément étant une résistance non linéaire, p. ex. une thermistance
A sealed electric compressor (1) having a normally-off type pressure switch (7) and a fuse element (6). The pressure switch (7) is placed in a sealed housing (2), connected parallel to a main winding (3A) of an electric motor (3), and, when the pressure of refrigerant in the sealed housing (2) is abnormally high, activates to short-circuit the main winding (3A). The fuse element (6) is connected in series to the main winding (3A) and an auxiliary winding (3B) of the electric motor (3) and interrupts conduction of electricity to the electric motor (3) when an excess current that is produced when the pressure switch (7) short-circuits the main winding (3A) flows.
F04B 39/00 - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
An acceleration switch includes a closed container further including a cylindrical housing and a substantially circular metal header plate, a conductive lead terminal inserted through a hole of the header plate and hermetically fixed in the hole, a contact member secured to a distal end of the lead terminal and having a plurality of elastically deformable movable contacts substantially concentric about the distal end of the lead terminal, a conductive inertia ball accommodated in the container and caused to roll in the housing thereby to contact the movable contact, whereby the housing and the contact member are rendered conductive, and a braking member disposed between the movable contacts so as to be capable of urging the inertia ball in a direction of a center of the closed container. The braking member includes an elastically deformable braking portion which is extended so as to normally contact the inertia ball.
In the detection of liquid back generated by refrigerant (R) circulating through refrigeration cycle (C), not only is at least temperature detecting element part (2) capable of detecting refrigerant temperature (Tr) fitted facing the interior of refrigerant (R) on its low-pressure side but also the magnitude of output signal (Vs) obtained by signal processing of detection signal (Vsi) based on the detection results of the temperature detecting element part (2) is compared with threshold value (Vsr) preset so as to allow detection of any liquid back so that detection of the liquid back by reaching of the magnitude of output signal (Vs) to the threshold value (Vsr) is carried out. Accordingly, the liquid back per se is directly detected.
A detector (1) for refrigerating cycle comprises a housing (2) formed by firmly bonding a domelike cover (3) and a planar base (4) hermetically, two refrigerant inflow/outflow pipes (5, 6) inserted, respectively, into two refrigerant inflow/outflow through holes (4a, 4b) provided in the base (4) while being sealed airtightly and fixed perpendicularly to the base (4), one or more leads (8a, 8b, 8c) inserted into one or more fine holes (4c, 4d, 4e) provided in the base (4) and sealed airtightly and insulated through a glass (7), and one or more thermistors (9t, 9w), arranged in the housing (2) with at least one terminal connected with the one or more leads (8a, 8b, 8c).
Physical quantity detector (1) for refrigeration cycle capable of detecting a physical quantity on refrigerant (R) circulating through refrigeration cycle (C), comprising physical quantity detecting means (Md) having temperature detecting element part (2) attached so as to allow detection of refrigerant temperature (Tr) and signal processing circuit (3a) capable of signal processing of detection signal (Vai) based on the detection results of the temperature detecting element part (2), and comprising physical quantity converting means (Mc) having refrigerant temperature conversion part (4) for converting the output signal (Va) of the signal processing circuit (3a) to refrigerant temperature (Tr) and refrigerant pressure conversion part (5) for converting the output signal (Va) of the signal processing circuit (3a) to refrigerant pressure (Pr). This eliminates the use of any separate pressure sensor for detection of refrigerant pressure.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 13/02 - Thermomètres spécialement adaptés à des fins spécifiques pour mesurer la température de fluides en mouvement ou de matériaux granulaires capables de s'écouler
G01L 11/00 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou
45.
REFRIGERANT FLOW RATE DETECTOR FOR REFRIGERATION CYCLE
Refrigerant flow rate detector (1) for refrigeration cycle capable of detecting the flow rate (refrigerant flow rate, Fc) of refrigerant (R) circulating through refrigeration cycle (C), comprising physical quantity detecting means (Ms) having temperature detecting element part (2) attached facing the interior of refrigerant (R) so as to allow detection of refrigerant temperature (Tr) and signal processing circuit (3s) capable of signal processing of detection signal (Vsi) based on the detection results of the temperature detecting element part (2), and comprising refrigerant flow rate conversion means (Mf) for converting the output signal (Vs) of the signal processing circuit (3s) to refrigerant flow rate (Fc). Accordingly, the temperature detecting element part (2) capable of detecting the refrigerant temperature (Tr) is used as a flow rate sensor.
This invention provides a thermally reactive switch (1) comprising a hermetically sealed vessel (2) comprising a metallic housing (3) and a lid plate (4), electroconductive terminal pins (10A, 10B) fixed in a hermetically sealed state in the lid plate (4), a fixed contact (8) fixed in the electroconductive terminal pin (10A), a thermally reactive plate (6), one end of which is electroconductively connected and fixed to the inner face of the hermetically sealed vessel (2) and undergoes reversion of the inflection direction at a predetermined temperature, and a movable contact (7) fixed to the other end of the thermally reactive plate (6). The movable contact (7) and the fixed contact (8) comprise a silver-tin oxide-indium oxide-base contact. A gas containing not less than 50% and not more than 95% of helium is sealed within the hermetically sealed vessel (2) so that the pressure is not less than 0.25 atm and not more than 0.8 atm at room temperature.
This invention provides a thermally reactive switch (1) comprising a hermetically sealed vessel (2) comprising a metallic housing (3) and a lid plate (4), electroconductive terminal pins (10A, 10B) fixed in a hermetically sealed state in the lid plate (4), a fixed contact (8) fixed in the electroconductive terminal pin (10A), a thermally reactive plate (6), one end of which is electroconductively connected and fixed to the inner face of the hermetically sealed vessel (2) and undergoes reversion of the inflection direction at a predetermined temperature, and a movable contact (7) fixed to the other end of the thermally reactive plate (6). The movable contact (7) and the fixed contact (8) comprise a silver-cadmium oxide-base contact. A gas containing not less than 50% and not more than 95% of helium is sealed within the hermetically sealed vessel (2) so that the pressure is not less than 0.38 atm and not more than 0.68 atm at room temperature.
