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Double outdoor heat exchanger heat pumps with defrosting function and defrosting method

A dual-outdoor, heat exchanger technology, applied in refrigeration and liquefaction, lighting and heating equipment, compressors, etc., can solve problems such as hidden dangers of compressor operation, side liquid return, deterioration of heat absorption effect, etc., so as to reduce the phenomenon of liquid return , Reduce the defrosting time and ensure the effect of heating quality

Inactive Publication Date: 2018-11-13
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sometimes, in order to prevent the temperature from falling excessively on the heat supply side, the heat supply fluid, such as the air in the air-conditioning room and the hot water of the water heater, will be stopped, thereby deteriorating the heat absorption effect and causing liquid return on the evaporation side of the heat pump during defrosting. The operation brings great risks

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  • Double outdoor heat exchanger heat pumps with defrosting function and defrosting method

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Embodiment Construction

[0018] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0019] In the description of the present invention, the terms "first", "second" and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

[0020] Such as figure 1 As shown, it is a double outdoor heat exchanger heat pump with defrosting function, including a compressor 1, a first four-way valve 2, a one-way valve 3, a second four-way valve 4, a condenser 5, and a The first evaporator 6, the solenoid...

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Abstract

The invention relates to double outdoor heat exchanger heat pumps with defrosting function and a defrosting method. The double outdoor heat exchanger heat pumps with the defrosting function are characterized in that the double outdoor heat exchanger heat pumps include a compressor, a first four-way valve, a one-way valve, a second four-way valve, a condenser, a first evaporator with a fan, magnetic valve, a first throttle mechanism, a second throttle mechanism, a third throttle mechanism and a second evaporator with the fan; and the defrosting operation is divided into two stages. The double outdoor heat exchanger heat pumps have the advantages that during defrosting, the heat exchanger on the heating side does not need to provide heat for defrosting, so the temperature on the heating sidecannot decrease, and thus the quality of heating is ensured; during the defrosting, machine group still absorbs the heat from outdoor environment, the efficiency of machine group operation is ensured, and defrosting time is reduced; and during the defrosting, a heat exchanger fan in evaporation condition keeps running, and refrigerant evaporates completely, and the phenomenon of the compressor liquid returning is greatly reduced.

Description

technical field [0001] The invention relates to a double outdoor heat exchanger heat pump with defrosting function and a defrosting method. Background technique [0002] At present, the mainstream method of heat pump defrosting is to introduce hot air into the heat exchanger on the air side to defrost through a four-way reversing valve, while the heat supply side is in a heat-absorbing state at this time. The effect is that the temperature on the heating side will drop, such as the temperature inside the air-conditioning room will drop, and the longer the defrosting time, the more obvious the temperature drop on the heating side. Sometimes, in order to prevent the temperature from falling excessively on the heat supply side, the heat supply fluid, such as the air in the air-conditioning room and the hot water of the water heater, will be stopped, thereby deteriorating the heat absorption effect and causing liquid return on the evaporation side of the heat pump during defrost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02
CPCF25B47/02F25B2313/02522
Inventor 李玉春余华明李锡宇王斯焱
Owner SHUNDE POLYTECHNIC
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