Cascade heat pump system

By installing a fluorine pump and compressor in the cascade heat pump system, and using intermediate heat exchangers and control valves to optimize the refrigerant flow, the problem of low energy efficiency of the existing system in high temperature environments is solved, and more efficient heat pump operation is achieved.

CN114941913AInactive Publication Date: 2022-08-26QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +3
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Patent Information

Application Number
CN202210471157.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2022-04-28
Publication Date
2022-08-26
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing cascade heat pump system has low adjustment flexibility outside the rated operating conditions, especially when the outdoor ambient temperature is high, resulting in low operating energy efficiency and energy waste.

Method used

A cascade heat pump system is designed, including a high-pressure refrigerant circulation loop and a low-pressure refrigerant circulation loop. Heat is exchanged through an intermediate heat exchanger, and a fluorine pump and compressor are set up in the low-pressure refrigerant circulation loop. Through the control valve and gas separation device Optimize refrigerant flow and improve system energy efficiency.

Benefits of technology

It effectively improves the operating energy efficiency of the cascade heat pump system, reduces energy consumption, extends the service life of the system, and maintains efficient operation under different environmental conditions.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention relates to the technical field of cascade heat pumps, particularly provides a cascade heat pump system, and aims to solve the problem of low operation energy efficiency of an existing cascade heat pump system. Therefore, the cascade heat pump system comprises a high-pressure refrigerant circulation loop and a low-pressure refrigerant circulation loop, and a first compressor, a first heat exchanger, a first throttling component and an intermediate heat exchanger are arranged on the high-pressure refrigerant circulation loop; the low-pressure refrigerant circulation loop is provided with a second compressor, an intermediate heat exchanger, a fluorine pump, a second throttling component and a second heat exchanger. The high-pressure refrigerant circulation loop and the low-pressure refrigerant circulation loop are arranged to be capable of exchanging heat through the intermediate heat exchanger. Based on the structural arrangement, the high-pressure refrigerant circulation loop and the low-pressure refrigerant circulation loop can exchange heat through the intermediate heat exchanger, and the fluorine pump is arranged in the low-pressure refrigerant circulation loop, so that the operation energy efficiency of the low-pressure refrigerant circulation loop can be effectively improved, and the operation energy efficiency of the cascade heat pump system is further improved.
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