Device for storing cold for an evaporator

Abstract

The invention relates to an air conditioning device for the passenger compartment of a vehicle, said device comprising a first closed loop (BF) which contains an evaporator (BF 5 ), through which an air stream (F) may flow, and in which a first coolant may flow such as to transfer cold to said air stream in the evaporator. According to said invention, the device comprises a second closed loop (BS) in which a second coolant may flow between the evaporator (BF 5 ) and a tank (BS 2 ), such as to receive cold from the first coolant in the evaporator for storing the same in the tank and returning to the air stream in the evaporator, according to the cooling capacity, produced by the first loop and to the air conditioning needs.

1 . Device for controlling the temperature of an air stream (F) for the air conditioning of the passenger cell of a vehicle, comprising a first closed loop (BF) containing an evaporator (BF 5 ) capable of being traversed by the air stream (F) and in which a first heat exchanging fluid can circulate in order to pass cold to the air stream in the evaporator (BF 5 ), and further comprising a second closed loop (BS) in which a second heat exchanging fluid can circulate so as to receive cold from the first heat exchanging fluid in the evaporator and give this cold back to the air stream (F) in the evaporator, according to the refrigeration power produced by the first loop and according to the processing needs of the air stream.  
   
   
       2 . Device according to  claim 1 , wherein the second closed loop (BS) contains an electric pump (BS 1 ) for the circulation of the second heat exchanging fluid.  
   
   
       3 . Device according to  claim 1 , wherein the second closed loop (BS) contains means (BS 2 ) of storing cold when the refrigeration power produced by the first loop exceeds the processing needs, these means serving to give back cold when this power is insufficient.  
   
   
       4 . Device according to  claim 3 , wherein an electric valve (BS 3 ) is interposed between the pump and the storage means (BS 2 ) in order to promote the conservation of cold therein.  
   
   
       5 . Device according to  claim 2 , wherein the second closed loop (BS) contains means (BS 2 ) of storing cold when the refrigeration power produced by the first loop exceeds the processing needs, these means serving to give back cold when this power is insufficient.