Abstract

The present invention concerns an apparatus for drying construction panels comprising,  a conveyor (40) for conveying wet construction panels (60) along a drying path through a number of high temperature chambers (1, 2) (= HT chambers) located upstream along the drying path of a number of low temperature chambers (N) (= LT-chambers),  a distribution system (5) comprising a LT-distribution section configured for distributing a heated drying gas into the LT-chambers coupled in series by a liaising duct (5L) to a HT-distribution section configured for distributing the heated drying gas into the HT-chambers, thus heating the main surfaces of the construction panels and for removing moisture therefrom as they travel through the chambers,  an exhaust system (7) configured for evacuating out of the apparatus exhaust fluid along an exhaust flowing path extending from the HT-chambers (1, 2) to outside the apparatus, wherein the fluid flowing into the HT-chambers is heated by heating elements (11) and wherein the fluid flowing into the LT-chambers is heated by a LT-heat exchanger (X95N) heated by the exhaust gas, and wherein a heat pump / MVR-system comprising a heat pump (8) transferring heat from the exhaust fluid to an MVR-cycle, which transfers the heat to the drying gas in the liaising duct (5L) pre-heats the drying gas prior to reaching the heating elements (11).

IPC Classes  ?

• F26B 15/10 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound
• F26B 15/18 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
• F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects

Abstract

The present invention concerns an apparatus for drying construction panels comprising,  a conveyor (40) for conveying wet construction panels (60) along a drying path through a number of high temperature chambers (1, 2) (= HT chambers) located upstream along the drying path of a number of low temperature chambers (N) (= LT-chambers),  a distribution system (5) for distributing a fluid into the HT- and LT-chambers for heating the main surfaces of the construction panels and for removing moisture therefrom as they travel through the chambers,  an exhaust system (7) configured for evacuating out of the apparatus exhaust fluid along an exhaust flowing path extending from the N chambers (1, 2, … N) to outside the apparatus, wherein the fluid flowing into the HT-chambers is heated by heating elements (11) and wherein the fluid flowing into the LT-chambers is heated by a heat pump / MVR-system comprising a heat pump (8) transferring heat from the exhaust fluid to an MVR-cycle, which transfers the heat to the fluid in direct communication with the LT-chambers.

IPC Classes  ?

• F26B 15/10 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound
• F26B 15/18 - Machines or apparatus for drying objects with progressive movementMachines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
• F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects