Heat pump system

A heat pump system, outdoor heat exchanger technology, applied in lighting and heating equipment, compressors with reversible cycles, damage protection, etc., can solve problems such as reduced comfort, long defrost time, temperature drop, etc. The effect of reducing, improving system operation efficiency, and maintaining stable operation

Active Publication Date: 2013-09-18
俞绍明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the traditional heat pump system needs to perform reverse cycle in the whole heat pump system when defrosting, it needs a special defrosting mode, resulting in a long defrosting time, and when defrosting, the indoor heat exchanger is used as an evaporator, and the indoor ambient temperature will decrease Significantly decreased, causing a decrease in comfort

Method used

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Embodiment Construction

[0022] Refer below Figure 1-3 A heat pump system according to a first embodiment of the present invention is described.

[0023] Such as Figure 1-3 As shown, the heat pump system according to the embodiment of the present invention includes a compressor 1, a gas-liquid separator 10, a four-way valve 2, an indoor heat exchanger 3, an outdoor heat exchanger 4, a first throttling mechanism 5 and a first bypass valve 7.

[0024] Specifically, the four-way valve 2 has first to fourth valve ports a, b, c and d, and the outlet and inlet of the compressor 1 are respectively connected with the third valve port c and the first valve port a of the four-way valve 2, The gas-liquid separator 10 is connected in series between the inlet of the compressor 1 and the first valve port a. Each of the indoor heat exchanger 3 and the outdoor heat exchanger 4 has first and second openings, the first opening of the indoor heat exchanger 3 is connected to the second valve port b of the four-way v...

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Abstract

The invention discloses a heat pump system, which comprises a compressor, a four-way valve, a liquid-vapor separator, an indoor heat exchanger, an outdoor heat exchanger, a first throttling mechanism and a first bypass valve for selectively bypassing the first throttling mechanism. According to the heat pump system provided by the embodiment of the invention, the flow rate of a refrigerant in the system can be increased by opening the first bypass valve, the evaporating temperature of the refrigerant entering the outdoor heat exchanger is raised, and frost on the surface of the outdoor heat exchanger is slowly thawed without performing a defrosting reverse cycle. Since the refrigerant reverse cycle is not required during defrosting, the indoor heat exchanger can be used as a condenser to produce heat all the time, the temperature fluctuation of the indoor heat exchanger is reduced, and the operation efficiency of the system is also obviously improved. The defrosting can be performed when a small amount of frost is accumulated by the outdoor heat exchanger, so that the frost on the surface of the outdoor heat exchanger is discontinuously removed, thereby keeping stable operation of the system.

Description

technical field [0001] The present invention relates to a heat pump system, Background technique [0002] After the traditional heat pump system runs for a period of time, for example, after the heating cycle runs for a period of time in winter, frost will accumulate on the outdoor heat exchanger, which will affect the heat exchange efficiency and the operating performance of the heat pump system, and cause the performance of the heat pump system to decline. After the frost layer has accumulated to a certain extent, the heat pump system needs to perform a defrost cycle. [0003] In the defrosting cycle, the entire heat pump system needs to be in a full reverse cycle, where the outdoor heat exchanger acts as the indoor heat exchanger and the indoor heat exchanger acts as the outdoor heat exchanger. Because the traditional heat pump system needs to perform reverse cycle in the whole heat pump system when defrosting, it needs a special defrosting mode, resulting in a long defr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B47/02F25B41/04F25B41/06F25B41/20F25B41/31
Inventor 俞绍明
Owner 俞绍明
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