Refrigeration device

Abstract

The invention discloses a refrigeration device which comprises a refrigerant loop composed of a compressor, an intermediate heat exchanger, a low temperature heat exchanger, a high temperature heat exchanger, a first throttling device, a second throttling device and a supercooling device. The supercooling device comprises a refrigerant main loop and an air supply branch loop, and the intermediate heat exchanger comprises a high temperature flow path and a low temperature flow path. An inlet of the high temperature flow path of the intermediate heat exchanger is communicated with an exhaust opening of the compressor, and an outlet of the high temperature flow path of the intermediate heat exchanger is communicated with an inlet of the high temperature heat exchanger. An inlet of the low temperature flow path of the intermediate heat exchanger is communicated with a refrigerant pipe between an outlet of the high temperature heat exchanger and the second throttling device through the first throttling device, and an outlet of the low temperature flow path of the intermediate heat exchanger is communicated with an inlet of the air supply branch loop of the supercooling device. An outlet of the air supply branch loop of the supercooling device is communicated with an air supply opening of the compressor. The refrigeration device can obviously improve the heating capacity of a heat pump cycle, reduce the exhaust temperature of the compressor and reduce the size of a condenser and the refrigerant charge.

Description

technical field [0001] The invention belongs to the field of refrigeration and air conditioning, and relates to a refrigeration device. Background technique [0002] The heating capacity of the heat pump cycle of the refrigeration device will rapidly decay as the outdoor ambient temperature drops and cannot meet the needs of users. At present, some manufacturers adopt the technology of double-stage or quasi-two-stage compression to increase the enthalpy by supplementing air in the middle to increase the low-temperature heating capacity and COP and reduce the compressor exhaust temperature. However, the effect of air supplementation and enthalpy increase in the prior art is not obvious, and the effect on increasing the heating capacity and reducing the exhaust temperature of the compressor is not obvious. Contents of the invention [0003] The purpose of the present invention is to provide a refrigeration device with good effect of air replenishment of the compressor and e...

AI Technical Summary

Problems solved by technology

However, the effect of air supplementation and enthalpy increase in the prior art is not obvious, and the effect on increasing the heating capacity and reducing the exhaust temperature of the compressor is not obvious.

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