Defrost control method, device and air conditioner for air conditioner
A control method and a technology of a control device, which are applied in the field of devices, air conditioners, and defrosting control methods for air conditioners, can solve the problems of reduced operating performance of the unit and inability to defrost the air conditioner in a timely and effective manner, and achieve the effect of saving energy
Active Publication Date: 2017-12-12
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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Problems solved by technology
[0003] 1. The air conditioner does not defrost when there is frost: when the outdoor heat exchanger of the air conditioner is covered by a thick layer of frost, the operating performance of the unit is significantly reduced, but the air conditioner has not yet entered the defrosting operation, so that the air conditioner cannot be defrosted in time and effectively
[0004] 2. No-frost defrosting of the air conditioner: the outdoor heat exchanger of the air conditioner is not covered by frost or only covered by a small amount of frost, which does not affect the performance of the air conditioner. Timely and effective defrosting
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[0068] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0069] Such as figure 1 As shown in FIG. 1 , a first embodiment of a defrosting control method for an air conditioner according to the present invention is shown. The defrosting control method of the air conditioner of this embodiment includes:
[0070] Step S10, when the air conditioner enters the heating mode, obtain the outdoor ambient temperature, and when the outdoor ambient temperature is less than or equal to the first preset temperature, control the compressor of the air conditioner to run for the first preset time, controlling the air conditioner to perform defrosting;
[0071] Because when the outdoor heat exchanger of the air conditioner is frosted, the ventilation opening will be blocked, resulting in a reduction in the heat supply of the air conditioner. Therefore, it is necessary to defrost the air con...
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The invention discloses a defrosting control method of an air conditioner. The defrosting control method includes the steps that when the air conditioner enters a heating mode, the outdoor environment temperature is obtained, and when the outdoor environment temperature is smaller than or equal to the first preset temperature, the air conditioner is controlled to conduct defrosting after operating for the first preset time; after defrosting is over and the air conditioner operates for the second preset time, the initial indoor air return temperature and the initial indoor air supply temperature are obtained, and therefore the initial heating capability value of the air conditioner is calculated; the current indoor air return temperature and the current indoor air supply temperature are obtained every other third preset time, and therefore the current heating capability value of the air conditioner is calculated; the heating capability attenuation rate of the air conditioner is calculated according to the initial heating capability value and the current heating capability value; when the heating capability attenuation rate is smaller than or equal to the preset attenuation rate corresponding to the current outdoor environment temperature, the air conditioner is controlled to conduct defrosting. The invention further discloses a defrosting control device of the air conditioner and the air conditioner. Promptness and effectiveness of defrosting of the air conditioner are improved.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method and device, and the air conditioner. Background technique [0002] At present, the defrosting control methods of existing air conditioners include: (1) Timed defrosting: under a certain ambient temperature, the air conditioner defrosts at regular intervals; (2) When the outdoor coil temperature is lower than a certain Once the temperature is set, the air conditioner will defrost after a certain period of time. In both methods of defrosting, there will be the following problems: [0003] 1. The air conditioner does not defrost when there is frost: When the outdoor heat exchanger of the air conditioner is covered by a thick layer of frost, the operating performance of the unit is significantly reduced, but the air conditioner has not yet entered the defrosting operation, so that the air conditioner cannot be defrosted in time a...
Claims
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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/42
Inventor 吴静龙陆平黄志方王洪王小军
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD