Heat pump air-conditioning defrosting control method and heat pump air-conditioning system

A heat pump air conditioner and control method technology, applied in heating and ventilation control systems, heating methods, heating and ventilation safety systems, etc., can solve resource waste, frequent reversing of four-way valves, unreliable defrosting signal accuracy, etc. problem, to achieve the effect of high defrosting accuracy, good defrosting effect and improved accuracy

Inactive Publication Date: 2015-09-23
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the time-humidity method is in heating operation, defrosting after receiving an inaccurate defrosting signal from the control program will cause frequent reversing of the four-way valve and affect the service life of the four-

Method used

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  • Heat pump air-conditioning defrosting control method and heat pump air-conditioning system
  • Heat pump air-conditioning defrosting control method and heat pump air-conditioning system
  • Heat pump air-conditioning defrosting control method and heat pump air-conditioning system

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Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 , figure 2 As shown, the present embodiment proposes a heat pump air-conditioning system, which includes an outdoor unit 6 , and an outdoor heat exchanger 7 and an outdoor unit fan 1 are arranged in the outdoor unit 6 . A detection module is arranged around the outdoor heat exchanger 7, and the detection module is used to detect the wind pressure value on the inside and outside of the outdoor heat exchanger, and the detection module includes at least one set of detection devices; the detection device and There is a preset distance between the fans of the outdoor unit, so that the fans of the outdoor unit do not contact the detection device during rotation, and there is no envelope interference between the two. The detection module is connected to the control device, and the detection module transmits the detected wind pressure values ​​on both sides of the outdoor heat exchanger to the control device.

[0032] Wherein, the set of detection devices in...

Embodiment 2

[0039] This embodiment proposes a defrosting control method for a heat pump air conditioner, which at least includes the following steps. The detection module respectively detects the inner wind pressure value and the outer wind pressure value of the outdoor heat exchanger and transmits them to the control device, and the control device calculates the Describe the wind pressure difference between the inside and outside of the outdoor heat exchanger, and perform defrosting control based on the wind pressure difference.

[0040]Perform defrosting control according to the wind pressure difference, specifically: compare the absolute value of the wind pressure difference with a preset defrosting value or a preset exit value, and control the heat pump air conditioner to defrost according to the comparison result or exit defrost. The method of controlling the heat pump air conditioner to defrost or exit the defrost according to the comparison result is: when the absolute value of the...

Embodiment 3

[0045] This embodiment is a specific implementation manner in which the heat pump air-conditioning system in the first embodiment uses the defrosting control method for the heat pump air-conditioner in the second embodiment.

[0046] The first outside air pressure sensor 2 and the first inside air pressure sensor 3 respectively detect the first outside wind pressure value and the first inside wind pressure value at the first position of the outdoor heat exchanger 7 and transmit them to the control device; the second outside air pressure sensor 4 and the second inside air pressure sensor respectively detect the second outside wind pressure and the second outside wind pressure at the second position of the outdoor heat exchanger 7 and transmit them to the control device.

[0047] The control device receives the first outside wind pressure value and the first inside wind pressure value transmitted by the first outside air pressure sensor 2 and the first inside air pressure sensor ...

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Abstract

The invention discloses a heat pump air-conditioning defrosting control method and a heat pump air-conditioning system. The control method at least comprises the following steps: a detecting module detects an inner-side wind pressure value and an outer-side wind pressure value of an outdoor heat exchanger respectively, and transmits the detected inner-side wind pressure value and the detected outer-side wind pressure value to a control device; and the control device calculates a wind pressure difference value of the inner and outer sides of the outdoor heat exchanger, and carries out defrosting control according to the wind pressure value. According to the heat pump air-conditioning defrosting control method, the detecting module is arranged on the outdoor heat exchanger, the existence of a frost layer on the outdoor heat exchanger can be effectively detected, and the accuracy for detecting a defrosting signal of the heat pump air-conditioning system is greatly improved, so that the heat pump air-conditioning defrosting effect is better; an absolute value of the wind pressure difference value of the two sides of the outdoor heat exchanger is compared with a preset defrosting value or a preset cancelling value, and the heat pump air-conditioning system is controlled to carry out defrosting or cancel defrosting, so that the defrosting accuracy is high and the defrosting effect is good.

Description

technical field [0001] The invention relates to the technical field of heat pump air conditioners, and more specifically, to a defrosting control method for a heat pump air conditioner and a heat pump air conditioner system. Background technique [0002] Air conditioning is air conditioning, which refers to the process of adjusting and controlling the temperature, humidity, cleanliness, speed and other parameters of the ambient air in the building / structure by artificial means. The structure of the air conditioner mainly includes: compressor, condenser, evaporator, Composed of four-way valve and one-way valve capillary assembly. The heat pump air conditioner uses the solar energy resources stored in the surface soil and water body as a cold and heat source, no combustion, no smoke exhaust, no waste, no pollution, heat pump air conditioner is more and more popular because of its clean and environmentally friendly working process and effective use of renewable resources The m...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/41F24F11/62
Inventor 张捷宋强刘景升郑品迪李银银刘江彬
Owner HAIER GRP CORP
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