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Evaporator frost melting apparatus

An evaporator and outdoor heat exchanger technology, applied in the field of evaporator defrosting devices, can solve the problems of reducing the performance coefficient of air conditioners, indoor heat loss, and the difficulty of effective heating of air conditioners, so as to inhibit the formation or accumulation of frost, The effect of improving the coefficient of performance in winter

Inactive Publication Date: 2003-10-15
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

Therefore, the air conditioner will cause indoor heat loss during the defrosting process, and increase the power consumption of the compressor, which will reduce the performance coefficient of the air conditioner in winter operation
When the outdoor ambient temperature is low, the defrosting cycle of the air conditioner will become very short, making it difficult for the air conditioner to heat effectively

Method used

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  • Evaporator frost melting apparatus
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Embodiment Construction

[0007] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings.

[0008] Such as figure 1 As shown, the present invention mainly includes a heat absorbing end 3, a heat releasing end 4, and a season switch 5. The heat absorbing end 3 of the defrosting device is arranged on the outer surface of the casing of the compressor 1 . The heat release end 4 of the defrosting device is arranged on the outer surface of the outdoor heat exchanger 2 . The season switch 5 of the defrosting device is installed between the heat-absorbing end 3 and the heat-discharging end 4 . The heat absorbing end 3 is composed of multiple copper strips with good thermal conductivity wound on the shell of the compressor 1 ; the heat releasing end 4 is composed of multiple copper strips with good thermal conductivity attached to the outer surface of the outdoor heat exchanger 2 .

[0009] When the air conditioner is running in summer, the ...

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Abstract

The evaporator defroster includes mainly heat absorbing end on the outer surface of compressor casing, heat releasing end on the outer surface of the outdoor heat exchanger and season switch installed between the heat absorbing end and the heat releasing end. During the heating operation in winter, the season switch is closed, the heat absorbing end absorbs heat from the compressor casing beforethe heat releasing end transmits heat to the outer wall of the outdoor heat exchanger with relatively low temperature to inhibit the formation and accumulation of frost. The present invention recovers the afterheat of the compressor during heating operation and is favorable to raising the winter performance index of air conditioner.

Description

Technical field: [0001] The invention relates to a defrosting device for an evaporator, in particular to a defrosting device for continuously defrosting an evaporator by utilizing waste heat of a compressor to improve the heating performance of a heat pump air conditioner in winter, and belongs to the technical field of refrigeration and air conditioning. Background technique: [0002] Heat pump air conditioners are used for cooling in summer and heating in winter, which is an energy-saving heating method. However, when the ambient temperature is lower than 5°C, the outdoor evaporator of the air-cooled air conditioner is prone to frost, resulting in deterioration of heat transfer performance. Therefore, when the air conditioner operates in the heating mode for a period of time, it must switch to the cooling mode through the four-way reversing valve for defrosting. After reversing, the original outdoor heat exchanger is changed from an evaporator to a condenser, and the high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/00F25B49/02
Inventor 张春路丁国良
Owner SHANGHAI JIAO TONG UNIV
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