Air-cooled heat pump unit
A technology of air-cooled heat pumps and units, applied in heat pumps, refrigerators, refrigeration components, etc., can solve problems such as incomplete defrosting, and achieve the effect of improving service life
Inactive Publication Date: 2009-11-11
浙江盾安机电科技有限公司
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Problems solved by technology
[0011] The purpose of the present invention is to solve the problems in the prior art, and propose an air-cooled heat pump unit, which can effectively solve the problem that the existing air-cooled heat pump unit cannot defrost during heating
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[0025] refer to figure 1 The air-cooled heat pump unit includes a compressor 1 , a four-way valve 2 , an evaporator 3 , an expansion valve 4 , the defrosting control device 5 , and an air-side finned heat exchanger 6 . The input end and output end of the compressor 1 are respectively connected to the second port and the third port of the four-way valve 2, and the fourth port of the four-way valve 2 is connected to the steam inlet of the air-side finned heat exchanger 6 , the first port of the four-way valve 2 is connected to the steam outlet of the evaporator 3, the air-side finned heat exchanger 6, the expansion valve 4, and the evaporator 3 are connected in sequence, and the air-side finned heat exchanger 6 There is also a defrosting control device 5 at the liquid outlet.
[0026] refer to figure 2 , 3 , the defrosting control device 5 includes a temperature sensing tube 51, a liquid heat-conducting substance 52, a temperature sensor 53, a liquid collecting pipe 54, a co...
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Abstract
The invention discloses an air-cooled heat pump unit, comprising a compressor, a four-way valve, an evaporator, an expansion valve and an air side finned heat exchanger; the input end and the output end of the compressor are respectively connected to a second port and a third port of the four-way valve; the fourth port of the four-way valve is connected to a steam inlet of the air side finned heat exchanger; the first port of the four-way valve is connected to a steam outlet of the evaporator; the air side finned heat exchanger, the expansion valve and the evaporator are connected in sequence; and a defrosting control device is arranged at the liquid outlet of the air side finned heat exchanger. The air-cooled heat pump unit effectively solves the problems that the frost cannot be removed completely after the unit executes heating operation and frosts due to different resistance of each path of the system caused by season wind, arrangement of the air side heat exchanger, arrangement of a fan or manufacturing defects, or due to the quick stop of defrosting as the probe contacts with a heat pipe, thus further effectively prolonging the service life of the compressor of the unit.
Description
【Technical field】 [0001] The invention relates to an air-cooled heat pump unit for an air conditioner, in particular to a defrosting control device for an air-side fin heat exchanger used in an air-cooled heat pump unit. 【Background technique】 [0002] The defrosting technology of the air-side fin heat exchanger of the existing air-cooled heat pump unit mainly adopts: [0003] 1. After meeting the set running time of the unit, stop running and enter the unit to defrost. When defrosting, it will exit after meeting the set defrosting time. The control is simple: timing operation, timing defrosting; [0004] 2. After satisfying the set running time of the unit and the temperature difference between the ambient temperature and the fin probe, the heating operation is ended and the unit is defrosted. When defrosting, it meets any of the conditions of the end temperature of the heat exchange tube, high pressure protection, and defrosting time After exiting, there is a defrost dete...
Claims
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IPC IPC(8): F25B30/02F25B49/02G01K1/14G01K1/16
Inventor 朱建华杨林花潘祖栋陈松柳玉春
Owner 浙江盾安机电科技有限公司