Economizer for heat pump unit and heat pump unit with same

Abstract

The invention discloses an economizer for a heat pump unit and the heat pump unit with the economizer. The economizer comprises a shell. A partition assembly is arranged in the shell so as to divide the interior of the shell into a plurality of gas-liquid separation spaces independent of one another. Each gas-liquid separation space is provided with a gas outlet, a liquid inlet and a liquid outlet which communicate with the gas-liquid separation space, wherein the liquid inlet communicates with the liquid outlet. A stop assembly located between the corresponding liquid inlet and the corresponding liquid outlet is arranged in each gas-liquid separation space. According to the economizer, the heat pump unit can meet the refrigerating requirement and also has the higher outlet water temperature, and the structure is simple and practical. Meanwhile, the complexity of heat pump unit pipeline arrangement is lowered at least to a certain degree.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to an economizer for a heat pump unit and a heat pump unit with the same. Background technique [0002] More and more heat pump chillers or ice-storage air-conditioning units must not only meet the cooling requirements of air-conditioning conditions, but also meet the high water temperature (such as above 60°C) heat pump conditions. In order to meet the above requirements, most of the market adopts dual Single-stage compressor or dual-stage compressor; the two compressors operate in parallel during refrigeration operation, and the two compressors operate in series under the high outlet water temperature (such as above 60°C) heat pump conditions. [0003] In order to improve the energy efficiency of the heat pump unit with two-stage two-stage compression as the main engine, it is necessary to overcool the liquid refrigerant from the condenser to improve the COP (coefficient of ...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the energy efficiency of the heat pump unit with two-stage two-stage compression as the main engine, it is necessary to overcool the liquid refrigerant from the condenser to improve the COP (coefficient of performance) of the unit; The economizer with one-stage compression requires several when it is applied to a heat pump unit with two-stage two-stage compression; therefore, the structure is complex, the floor space is large, and the piping layout of the unit is also relatively complicated.

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