Cooling device for use in e.g. supermarket, has thermostatic expansion valve controlled by temperature sensor arranged in low-pressure line downstream after low pressure passage of internal heat exchanger and before compressor

摘要

#CMT# #/CMT# The device has an internal heat exchanger (5) for an evaporator (3) with high pressure and low pressure passages. A thermostatic expansion valve (2) is controlled by a temperature sensor (4), which is arranged in a low-pressure line (7) downstream after the low pressure passage of the internal heat exchanger and before a compressor (1). The internal heat exchanger is arranged as a direct current heat exchanger. Another internal heat exchanger is provided for the evaporators. #CMT#USE : #/CMT# Used in a cold-storage house and supermarket for cooling food. #CMT#ADVANTAGE : #/CMT# The thermostatic expansion valve is controlled by the temperature sensor, which is arranged in the low-pressure line downstream after the low pressure passage of the internal heat exchanger and before the compressor, where the internal heat exchanger is arranged as the direct current heat exchanger, thus raising the evaporation temperature in a stable control mode, and hence reducing energy consumption of the device, environmental impact and frost formation, improving cooling capacity of the device, controlling the temperature of the cooling air, and reducing space occupied by the device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram of a cooling device with a thermostatic expansion valve and an internal heat-transfer agent in a direct current circuit. 1 : Compressor 2 : Thermostatic expansion valve 3 : Evaporator 4 : Temperature sensor 5 : Internal heat exchanger 7 : Low-pressure line 8 : Condenser.