Heat recovery type heat pump device and control method of heat recovery type heat pump device

By setting up a liquid reservoir and a control valve in the heat recovery heat pump device, the inlet and outlet volume of the liquid reservoir are controlled according to the demand of the refrigerant liquid, the problem of retention of excess refrigerant liquid is solved and the efficiency of the refrigerant system is improved.

CN119393924AActive Publication Date: 2025-02-07AUX AIR CONDITIONER CO LTD
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Patent Information

Application Number
CN202411760017.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-02-07
Estimated Expiration
2044-12-03

AI Technical Summary

Technical Problem

In the existing heat recovery heat pump device, excess refrigerant liquid remains in the condenser, resulting in too high supercooling of the high-pressure liquid, increasing the condensation temperature, and reducing the efficiency of the refrigeration system.

Method used

By setting up a reservoir and a control valve in the heat recovery heat pump device, the inlet and outlet volume of the reservoir are controlled according to the demand of the refrigerant liquid to ensure that the circulating refrigerant volume is always appropriate.

Benefits of technology

The reasonable control of the amount of circulating refrigerant in the heat recovery heat pump device is achieved, which avoids refrigerant liquid retention, reduces the condensation temperature, and improves the efficiency of the refrigerant system.

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Abstract

The invention provides a heat recovery type heat pump device and a control method of the heat recovery type heat pump device. The heat recovery type heat pump device comprises a refrigerant circulation pipeline, a compressor, a first heat exchanger, a second heat exchanger, an external air branch and a liquid storage branch. An external air heat exchanger is arranged on the external air branch, the external air branch is provided with a first end and a second end, the first end is connected between the compressor and the first heat exchanger, and the second end is connected between the first heat exchanger and the second heat exchanger; the liquid storage branch is provided with a liquid storage device, the liquid storage device is provided with a liquid inlet side and a liquid outlet side, and the liquid inlet side is connected between the second end and the second heat exchanger through a first pipeline; the liquid outlet side is connected between the second heat exchanger and the compressor through a second pipeline; wherein a first control valve is arranged on the first pipeline, and a second control valve is arranged on the second pipeline. The technical problems that in the prior art, redundant refrigerant liquid in a heat pump device is retained in a condenser, the condensation temperature rises, and the efficiency of a refrigeration system is reduced are solved.
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Citation Information

Patent Citations

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    CN110529966A

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    CN113048672A

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