Abrégé

Apparatus and methods for sampling air-borne particles. According to one embodiment a nozzle is used to generate a jet of fog that includes a gas and liquid droplets. The jet of fog is formed by the nozzle in a way to cause particles in the air surrounding the jet of fog to be drawn into the jet of fog and to further cause the particles to aggregate with the liquid droplets inside the jet of fog. A sample collecting surface is located opposite and spaced apart from an outlet of the nozzle. The sample collecting surface is preferably sloped so that the liquid sample can be forced by gravity off the collecting surface and into a liquid sample container. Inside the jet of fog and on the sample collection surface the liquid droplets merge with one another to form larger sized droplets that are collectable in the liquid sample container.

Classes IPC  ?

• G01N 1/22 - Dispositifs pour prélever des échantillons à l'état gazeux

Abrégé

Disclosed are apparatus and methods for sampling air-borne particles. According to one embodiment a nozzle is used to generate a jet of fog that includes a gas and liquid droplets of different sizes. The jet of fog is formed by the nozzle in a way to cause particles in the air surrounding the jet of fog to be drawn into the jet of fog and to further cause the particles to aggregate with the liquid droplets inside the jet of fog. A sample collecting surface is located opposite and spaced apart from an outlet of the nozzle. The sample collecting surface is preferably sloped so that the liquid sample can be forced by gravity off the collecting surface and into a vial or other liquid sample container. Inside the jet of fog and on the sample collection surface the liquid droplets merge with one another to form larger sized droplets that are collectable in the liquid sample container.

Classes IPC  ?

• G01N 1/22 - Dispositifs pour prélever des échantillons à l'état gazeux

Abrégé

An apparatus (10) for sampling air-borne particles, comprising a nozzle (1), which is used to generate a jet of fog (20) that includes a gas and liquid droplets of different sizes. The jet of fog (20) is formed by the nozzle in a way to cause particles in the air surrounding the jet of fog to be drawn into the jet of fog and to further cause the particles to aggregate with the liquid droplets inside the jet of fog. A sample collecting surface (30) is located opposite and spaced apart from an outlet of the nozzle. The sample collecting surface is preferably sloped so that the liquid sample can be forced by gravity off the collecting surface and into a vial or other liquid sample container. Inside the jet of fog and on the sample collection surface the liquid droplets merge with one another to form larger sized droplets that are collectable in the liquid sample container (32).

Classes IPC  ?

• G01N 1/22 - Dispositifs pour prélever des échantillons à l'état gazeux
• G01N 1/40 - Concentration des échantillons
• A61L 9/14 - Désinfection, stérilisation ou désodorisation de l'air utilisant des substances vaporisées ou pulvérisées
• B01D 5/00 - Condensation de vapeursRécupération de solvants volatils par condensation
• B01J 8/12 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles se déplaçant par gravité en un flux descendant
• B01J 8/14 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles se déplaçant dans un appareil à vortex libre
• F24F 8/183 - Traitement, p. ex. purification, de l'air fourni aux locaux de résidence ou de travail des êtres humains autrement que par chauffage, refroidissement, humidification ou séchage par séparation, p. ex. par filtrage par séparation centrifuge, p. ex. en utilisant des tourbillons

Abrégé

Disclosed is a design approach for intrinsically safe electromagnetic devices such as electrically actuated valves, motors, generators, or transformers intended for and capable of safe operation in explosive atmospheres or environments. The design employs a plurality of electrically insulated, intrinsically safe circuits cooperating to induce, or in the case of a generator, create a relatively large magnetic flux in the ferromagnetic core, or iron, of these devices. A method to construct such intrinsically safe devices is disclosed. These devices can be practically used in machines, mechanisms, valves, and manned or unmanned vehicles intended for safe operation in hazardous environments, for example underground coal mines or ATEX or EX classified facilities.

Classes IPC  ?

• H02K 5/08 - Enveloppes en matériau isolant
• H02K 5/136 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction spécialement adaptées à un fonctionnement dans un liquide ou dans un gaz à l'épreuve des explosions
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 15/08 - Exécution des enroulements par pose des conducteurs dans ou autour des parties formant le noyau
• H02K 15/10 - Application d'un isolant sous forme solide à des enroulements, des stators ou des rotors, p.ex. application de rubans isolants

Abrégé

Disclosed is a design approach for intrinsically safe electromagnetic devices such as electrically actuated valves, motors, generators, or transformers intended for and capable of safe operation in explosive atmospheres or environments. The design employs a plurality of electrically insulated, intrinsically safe circuits cooperating to induce, or in the case of a generator, create a relatively large magnetic flux in the ferromagnetic core, or iron, of these devices. A method to construct such intrinsically safe devices is disclosed. These devices can be practically used in machines, mechanisms, valves, and manned or unmanned vehicles intended for safe operation in hazardous environments, for example underground coal mines or ATEX or EX classified facilities.

Classes IPC  ?

• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre euxFixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• H02K 11/30 - Association structurelle à des circuits de commande ou à des circuits d’entraînement
• H01F 27/24 - Noyaux magnétiques
• H01F 7/08 - Électro-aimantsActionneurs comportant des électro-aimants avec armatures
• F16K 31/04 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques utilisant un moteur