Air-conditioning loop with gas accumulator

Abstract

An air-conditioning loop with a transcritical refrigerant including a compressor, a gas cooler, an evaporator, an expansion device, an internal heat exchanger for heat exchange between a high-pressure side and a low-pressure side, an accumulator on the low-pressure side between evaporator and the internal heat exchanger, and a gas accumulator on the low-pressure side.

1 . An air-conditioning loop with a transcritical refrigerant comprising a compressor, a gas cooler, an evaporator, an expansion device and internal heat exchanger for heat exchange between a high-pressure side and a low-pressure side, and an accumulator on the low-pressure side between evaporator and the internal heat exchanger, wherein the improvement comprises a gas accumulator on the low-pressure side.  
     
     
         2 . The air-conditioning loop of  claim 1 , wherein the gas accumulator is connected by a branch line to the line between the internal heat exchanger and compressor.  
     
     
         3 . The air-conditioning loop of  claim 1 , wherein the gas accumulator is a line thickening between the internal heat exchanger and the compressor.  
     
     
         4 . The air-conditioning loop of  claim 1 , wherein the gas accumulator is integrated with the gas cooler.  
     
     
         5 . The air-conditioning loop of  claim 1 , wherein the gas accumulator is situated between the internal heat exchanger and the intake side of the compressor.  
     
     
         6 . The air-conditioning loop of  claim 5 , wherein the gas accumulator is connected by a branch line to the line between the internal heat exchanger and compressor.  
     
     
         7 . The air-conditioning loop of  claim 1 , wherein the gas accumulator is integrated in the internal heat exchanger.  
     
     
         8 . The air-conditioning loop of  claim 7 , wherein the internal heat exchanger includes a first tube with a multi-chamber tube extending therethrough with said high-pressure side flowing through said multi-chamber tube, and the first tube includes a low-pressure flow path occupying part of the tube cross-section adjacent the multi-chamber tube with the remaining cross-section of the first tube being a gas accumulator connected to the low-pressure side.