Transcritical air conditioning circuit with integrated expansion vessel

Abstract

Air conditioning device ( 1 ) with transcritical operating cycle, the device comprising a circuit ( 4 ) conveying a refrigerant ( 5 ) and successively connecting: the outlet ( 6 ) of a compressor ( 7 ); a gas cooler ( 8 ); the cold circuit ( 9 ) of an intermediate cooler ( 10 ); an expansion valve ( 11 ); a second exchanger ( 12 ) having a volume ( 31, 71 ) for the circulation of a coolant ( 21 ) in a heat-exchange relationship with the refrigerant ( 5 ); the inlet ( 13 ) of the hot circuit ( 14 ) of the intermediate cooler ( 10 ); the air conditioning device ( 1 ) being characterized in that the second exchanger of type ( 12 ) comprises an expansion volume for the coolant ( 21 ).

1 . An air conditioning device with transcritical operating cycle, the device comprising:
 a circuit conveying a refrigerant and successively connecting:
 an outlet of a compressor,
 a gas cooler, 
 
 a cold circuit of an intermediate cooler,
 an expansion valve, 
 a second exchanger having a volume for the circulation of a coolant in a heat-exchange relationship with the refrigerant, and 
 
 an inlet of the hot circuit of the intermediate cooler, 
 the outlet of the hot circuit of the intermediate cooler being connected to the inlet of the compressor, 
   wherein the second exchanger comprises an expansion volume for the coolant.   
     
     
         2 . The device as claimed in  claim 1 , wherein the expansion volume of the second exchanger also includes an access plug. 
     
     
         3 . An exchanger for an air conditioning device with transcritical operating cycle, comprising:
 a bundle of tubes for circulating a refrigerant that extend in a volume for circulation of a coolant; and   an expansion volume for the coolant.   
     
     
         4 . The exchanger as claimed in  claim 3 , further comprising an access plug to the expansion volume for the coolant. 
     
     
         5 . The exchanger as claimed in  claim 3 , wherein the volume for circulation of the coolant is of substantially parallelepipedal shape and is delimited by a body comprising a first element and a second element clipped to the first element. 
     
     
         6 . The exchanger as claimed in  claim 5 , wherein the first element has a substantially parallelepipedal shape and the second element is substantially plane. 
     
     
         7 . The exchanger as claimed in  claim 5 , wherein the first element and the second element are of substantially parallelepipedal shape. 
     
     
         8 . The exchanger as claimed in  claim 5 , wherein at least one of the elements comprises at least one groove receiving the flanks of a manifold of the bundle of tubes for circulation of the refrigerant.