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Secondary air injection high-efficiency ultralow temperature heat pump unit

A pump unit and ultra-low technology, applied in heat pumps, refrigerators, compressors, etc., can solve the problems of air source heat pumps not working properly, restricting the promotion and application of air source heat pumps, etc., to improve the normal operating temperature range and save energy. Ideal and reliable results

Inactive Publication Date: 2010-12-22
GUANGZHOU DERON HEAT SOURCE FACILITIES
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AI Technical Summary

Problems solved by technology

[0002] At present, the operating environment temperature range of ordinary air source heat pump units is generally -7 ~ 43 ℃, but in the cold northern regions, the existing air source heat pumps cannot work normally
Therefore, the promotion and application of air source heat pumps in the northern market is largely restricted.

Method used

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  • Secondary air injection high-efficiency ultralow temperature heat pump unit
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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing.

[0011] The specific embodiment of the present invention is as figure 1 As shown, a secondary air injection high-efficiency ultra-low temperature heat pump unit includes a compressor 1, a condenser 2, a liquid storage tank 3, a thermal expansion valve 4, an evaporator 5, and a gas-liquid separator 6, and each component is connected in sequence to form a circuit. Between the compressor 1 and the liquid storage tank 3, there is also a compressor air supply device, which includes a jet expansion valve 6, an economizer 7, a first solenoid valve 8 and a second solenoid valve 9; In parallel, the first solenoid valve 8 is directly connected to the compressor 1, the second solenoid valve 9 is connected in series with the jet expansion valve 6 and the economizer 7 in turn, and the economizer 7 is connected to the compressor 1 again.

[0012] In this embodiment, the compressor 1 is p...

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Abstract

The invention discloses a secondary air injection high-efficiency ultralow temperature heat pump unit which comprises a compressor, a condenser, a liquid storage pot, a thermostatic expansion valve, an evaporator and a gas-liquid separator. All assemblies are connected in sequence to form a loop, and a compressor air supplement unit is arranged between the compressor and the liquid storage pot. The air supplement unit comprises an injection expansion valve, an economizer, a first solenoid valve and a second solenoid valve, wherein the two solenoid valves are connected in parallel, the first solenoid valve is directly connected with the compressor, the second solenoid valve is successively connected with the injection expansion valve and the economizer in series, and the economizer is connected with the compressor. In the invention, the technology of compensating air for a compressor in the course of compression is adopted, the normal operating temperature range of the compressor is greatly widened, and the system is stable and reliable and has obvious energy saving effect.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a high-efficiency ultra-low temperature heat pump unit with secondary air injection. Background technique [0002] At present, the operating environment temperature range of ordinary air source heat pump units is generally -7 ~ 43 ℃, but in the cold northern regions, the existing air source heat pumps cannot work normally. Therefore, the promotion and application of air source heat pumps in the northern market is largely restricted. Contents of the invention [0003] The purpose of the present invention is to provide a high-efficiency ultra-low temperature heat pump unit with secondary air injection, which has a novel structure, adopts the air supplement technology in the middle of the compressor, greatly improves the normal operating temperature range of the compressor, has a stable and reliable system, and has obvious energy-saving effects. [0004] The technical solution of ...

Claims

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Application Information

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IPC IPC(8): F25B30/02F25B30/06F25B41/06F25B41/04
CPCF25B2400/13F25B13/00F25B1/10
Inventor 张载彭
Owner GUANGZHOU DERON HEAT SOURCE FACILITIES
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