Control method and device for air conditioner defrosting and air conditioner

A control method and control device technology, applied to heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of incomplete defrosting, affecting the heating performance of air conditioners, and rough judgment methods, so as to reduce adverse effects, Good defrosting effect and improvement of control accuracy

Inactive Publication Date: 2019-11-19
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present disclosure provide a control method and device for defrosting an air conditioner, and an air conditioner to solve the problem that the method of judging whether to exit the defrosting mode in the related art is too rough, and it is

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  • Control method and device for air conditioner defrosting and air conditioner
  • Control method and device for air conditioner defrosting and air conditioner
  • Control method and device for air conditioner defrosting and air conditioner

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Example Embodiment

[0023] In order to have a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference and explanation purposes only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a number of details are used to provide a sufficient understanding of the disclosed embodiments. However, without these details, one or more embodiments can still be implemented. In other cases, in order to simplify the drawings, well-known structures and devices may be simply shown.

[0024] figure 1 It is a schematic flowchart of a control method for defrosting an air conditioner provided by an embodiment of the present disclosure.

[0025] The embodiment of the present disclosure provides a ...

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Abstract

The invention relates to the technical field of air conditioner defrosting, and discloses a control method and device for air conditioner defrosting and an air conditioner. The control method comprises the following steps: controlling to increase the flow opening degree of a throttling device of the air conditioner under the condition that the air conditioner needs to be defrosted; obtaining a refrigerant inlet liquid temperature difference value of an outdoor heat exchanger and a preset position temperature of the outdoor heat exchanger; and controlling to stop increasing the flow opening degree of the throttling device under the condition that the refrigerant inlet liquid temperature difference value and the preset position temperature meet the defrosting exit condition. The time for theair conditioner to exit the defrosting is comprehensively judged according to the refrigerant inlet temperature difference value and the preset position temperature of the outdoor heat exchanger, sothat the control precision for controlling the air conditioner to exit defrosting is effectively improved; and through increasing the flow opening degree of the throttling device and changing the refrigerant temperature and pressure in a refrigerant circulation loop, the refrigerant finally flowing into the outdoor heat exchanger for defrosting can achieve a relatively good defrosting effect.

Description

technical field [0001] The present application relates to the technical field of air conditioner defrosting, for example, to a control method and device for air conditioner defrosting, and an air conditioner. Background technique [0002] At present, most of the mainstream models of air conditioners have the heat exchange function of cooling and heating. Increase the temperature of the indoor environment; during the heating process of the air conditioner, the outdoor heat exchanger of the outdoor unit acts as an evaporator that absorbs heat from the outdoor environment. Affected by the temperature and humidity of the outdoor environment, the outdoor heat exchanger It is easy to condense more frost on the heater, and when the frost accumulates to a certain thickness, the heating capacity of the air conditioner will become lower and lower. Therefore, in order to ensure the heating effect and avoid excessive frost condensation, it is necessary to The outdoor heat exchanger is ...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/64F24F11/84F25B47/02F24F140/20
CPCF25B47/02F25B2347/02F25B2500/31F24F11/42F24F11/64F24F11/84F24F2140/20
Inventor 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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