Air conditioner for defrost and variable-frequency heat pump

A technology for air conditioners and heat pumps, applied in defrosting, lighting and heating equipment, and compressors with reversible cycles, etc. It can solve the problems of heat loss balance, evaporator temperature increase demand, heat loss, discontinuous heating, etc.

Inactive Publication Date: 2011-08-10
HISENSE HOME APPLIANCES GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing air source heat pump type inverter air conditioners perform heating operation in a low temperature environment. When the evaporation temperature of the refrigerant in the outdoor heat exchanger is lower than zero and the humidity of the air reaches a certain condition, the surface of the fins of the outdoor heat exchanger will gradually Frosting, when the frost layer reaches a certain level, the heat transfer effect drops sharply. At this time, it is necessary to perform defrosting operation. Through the action of the four-way valve, the flow direction of the refrigerant changes, and the high-temperature and high-pressure gas flows into the out

Method used

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  • Air conditioner for defrost and variable-frequency heat pump
  • Air conditioner for defrost and variable-frequency heat pump

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0011] Such as figure 1 As shown, a defrosting frequency conversion heat pump air conditioner includes an indoor unit 20 and an outdoor unit 10, the outdoor unit 10 includes a condenser 1, a fan 2, a reversing four-way valve 3, a throttling mechanism 5 and a compressor 8, wherein the One end of the condenser 1 is connected to the indoor unit 20 through the connecting pipe 7 and the throttling mechanism 5, and the other end is connected to the compressor 8 and the indoor unit 20 through the four-way valve 3. Between the indoor unit 20 and the condenser 1 and the four-way valve 3 There are cut-off valves 6 between them, a connecting pipe 7 is provided between the throttling mechanism 5 and the condenser 1, and a pipeline heating device 4 is arranged between the throttling mechanism 5 and the condenser 1.

[0012] The pipeline heating device 4 is...

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Abstract

The invention provides an air conditioner for a defrost and variable-frequency heat pump, which comprises an indoor unit and an outdoor unit. The outdoor unit comprises a condenser, a fan, a reversing four-way valve and a compressor, wherein one end of the condenser is connected with the indoor unit through a connection pipeline, and the other end is connected with the compressor and the indoor unit through four-way valves; cut-off valves are arranged among the indoor unit, the condenser and the four-way valves; a throttle mechanism is arranged between a cut-off valve on the connection pipeline and the condenser; and a pipeline heating device is arranged between the throttle mechanism and the condenser. The air conditioner for the heat pump is free from heat loss during the defrost process, can better keep the indoor temperature constant, has less temperature fluctuation and improves the indoor comfort.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, in particular to a heat pump air conditioner with a defrosting function. Background technique [0002] Existing air source heat pump type inverter air conditioners perform heating operation in a low temperature environment. When the evaporation temperature of the refrigerant in the outdoor heat exchanger is lower than zero and the humidity of the air reaches a certain condition, the surface of the fins of the outdoor heat exchanger will gradually Frosting, when the frost layer reaches a certain level, the heat transfer effect drops sharply. At this time, it is necessary to perform defrosting operation. Through the action of the four-way valve, the flow direction of the refrigerant changes, and the high-temperature and high-pressure gas flows into the outdoor heat exchanger to cool the throttling. The low-pressure low-temperature liquid needs to evaporate indoors to absorb a certain amoun...

Claims

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Application Information

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IPC IPC(8): F25B47/00
CPCF25B47/00F25D21/08F25B13/00F25B2313/02741
Inventor 李志军
Owner HISENSE HOME APPLIANCES GRP CO LTD
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