Air Conditioning Device For Heating, Ventilation and/or Air Conditioning Installation

Abstract

The invention is related to an AC loop ( 12 ) for ventilation, heating and/or air conditioning installation comprising, according to the circulation of an refrigerant in the AC loop, at least a compressor ( 14 ), a first heat exchanger ( 16 ) for heating an air flow distributed into the passenger compartment, a first expansion device ( 18 ), an exterior heat exchanger ( 20 ) and a second heat exchanger ( 24 ). The AC loop ( 12 ) comprises a storage device ( 28 ) connected to the outlet of the first heat exchanger ( 16 ) and to the outlet of the exterior heat exchanger ( 20 ).

1 . An air conditioning circuit ( 12 ) for a heating, ventilation and/or air conditioning installation, the air conditioning circuit ( 12 ) comprising at least, according to the direction of closed circuit coolant circulation, a compressor ( 14 ), a first heat exchanger ( 16 ), a first expansion member ( 18 ), an external heat exchanger ( 20 ) and a second heat exchanger ( 24 ),
 characterized in that the air conditioning circuit ( 12 ) comprises a storage device ( 28 ) connected to the outlet of the first heat exchanger ( 16 ) and to the outlet of the heat exchanger ( 20 ).   
     
     
         2 . An air conditioning circuit ( 12 ) according to  claim 1 , characterized in that the air conditioning circuit ( 12 ) comprises a first bypass arm ( 36 ) arranged in parallel with the first expansion member ( 18 ). 
     
     
         3 . An air conditioning circuit ( 12 ) according to  claim 1 , characterized in that the air conditioning circuit ( 12 ) comprises a first switching means ( 32 ) at the outlet of the first heat exchanger ( 16 ) to control the circulation of the coolant through the storage device ( 28 ). 
     
     
         4 . An air conditioning circuit ( 12 ) according to  claim 3 , characterized in that the first switching means ( 32 ) is arranged upstream, according to the direction of closed circuit circulation of a coolant, from the first expansion member ( 18 ). 
     
     
         5 . An air conditioning circuit ( 12 ) according to  claim 3 , characterized in that the first switching means ( 32 ) is a first “three-way” valve ( 32 ). 
     
     
         6 . An air conditioning circuit ( 12 ) according to  claim 3 , characterized in that the first switching means ( 32 ) is a first intermediate heat transfer fluid/coolant heat exchanger ( 44 ). 
     
     
         7 . An air conditioning circuit ( 12 ) according to  claim 1 , characterized in that the air conditioning circuit ( 12 ) comprises a second switching means ( 34 ) arranged at the outlet of the external heat exchanger ( 20 ) to control the circulation of the coolant through the storage device ( 28 ). 
     
     
         8 . An air conditioning circuit ( 12 ) according to  claim 7 , characterized in that the second switching means ( 34 ) is a second “three-way” valve ( 34 ). 
     
     
         9 . An air conditioning circuit ( 12 ) according to  claim 8 , characterized in that the air conditioning circuit ( 12 ) comprises a second bypass arm ( 38 ) of the storage device  28 ) connected to the second “three-way” valve ( 34 ). 
     
     
         10 . An air conditioning circuit ( 12 ) according to  claim 7 , characterized in that the second switching means ( 34 ) is a second intermediate heat transfer fluid/coolant heat exchanger ( 46 ). 
     
     
         11 . An air conditioning circuit ( 12 ) according to  claim 1 , characterized in that the air conditioning circuit ( 12 ) comprises a second expansion member ( 22 ). 
     
     
         12 . An air conditioning circuit ( 12 ) according to  claim 11 , characterized in that the air conditioning circuit ( 12 ) comprises a third bypass arm ( 42 ) arranged in parallel with the second expansion member ( 22 ) and/or the second heat exchanger ( 24 ). 
     
     
         13 . An air conditioning circuit ( 12 ) according to  claim 11 , characterized in that the second expansion member ( 22 ) is controlled such that the pressure of the coolant at the outlet of the second expansion member ( 22 ) is greater than the saturation pressure of the air flow to be distributed in the vehicle interior entering the second heat exchanger ( 24 ). 
     
     
         14 . An air conditioning circuit ( 12 ) according to  claim 13 , characterized in that the first switching means ( 32 ) and the second switching means ( 34 ) are designed such that the coolant from the compressor ( 14 ) passes successively through the first heat exchanger ( 16 ), the first bypass pipe ( 70 ), the thermal storage device ( 28 ), the first return pipe ( 72 ), the first expansion member ( 18 ), the external heat exchanger ( 20 ), the second bypass arm ( 38 ) and the third bypass arm ( 42 ). 
     
     
         15 . An air conditioning circuit ( 12 ) according to  claim 13 , characterized in that the first switching means ( 32 ) and the second switching means ( 34 ) are designed such that the coolant from the compressor ( 14 ) passes successively through the first heat exchanger ( 16 ), the first expansion member ( 18 ), the external heat exchanger ( 20 ), the storage device ( 28 ) and the third bypass arm ( 42 ). 
     
     
         16 . An air conditioning circuit ( 12 ) according to  claim 13 , characterized in that the first switching means ( 32 ) and the second switching means ( 34 ) are designed such that the coolant from the compressor ( 14 ) passes successively through the first heat exchanger ( 16 ), the first bypass arm ( 36 ), the external heat exchanger ( 20 ), the storage device ( 28 ), the second expansion member ( 22 ) and the second heat exchanger ( 24 ). 
     
     
         17 . An air conditioning circuit ( 12 ) according to  claim 13 , characterized in that the first switching means ( 32 ) and the second switching means ( 34 ) are designed such that the coolant from the compressor ( 14 ) passes successively through the first heat exchanger ( 16 ), the first bypass pipe ( 70 ), the thermal storage device ( 28 ), the first return pipe ( 72 ), the first expansion member ( 18 ), the external heat exchanger ( 20 ), the second bypass arm ( 38 ), the second expansion member ( 22 ) and the second heat exchanger ( 24 ). 
     
     
         18 . An air conditioning circuit ( 12 ) according to  claim 1 , characterized in that the storage device ( 28 ) contains a phase change material having a phase change temperature between 5° C. and 20° C.