Air conditioner heating and defrosting control method, air conditioner and storage medium
A control method and technology for an air conditioner, which are applied in the field of air conditioner heating and defrosting control, air conditioners and storage media, and can solve problems such as heating failure and pipeline blockage.
Active Publication Date: 2020-12-22
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a method for controlling heating and defrosting of an air conditioner, with the purpose of solving the problem of pipeline blockage caused by the rapid frequency increase of the compressor and the rapid decrease of the opening of the expansion valve when the existing air conditioner exits defrosting cause heating problems
Method used
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[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0028] The present invention proposes a heating and defrosting control method for an air conditioner. The heating and defrosting control method for an air conditioner is applied to the heating mode of the air conditioner. The system pipeline of the air conditioner is as follows: figure 1 As shown, the air conditioner includes an outdoor heat exchanger 1, an expansion valve 2, an indoor heat exchanger 3, a four-way valve 4, a compressor 5, an internal fan 6 and an external fan 7, wherein the indoor heat exchanger 3 and the internal...
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The invention provides an air conditioner heating and defrosting control method, an air conditioner and a storage medium. According to the air conditioner heating and defrosting control method, duringthe period of enabling a compressor to quickly raise the frequency to a heating start operation frequency after a shutdown state carrying out a defrosting exit action, an operating process for raising the frequency to a low-frequency first frequency at low speed and maintaining operating for a second preset time is inserted, so that the problem that the pressure change of a refrigerant in a pipeline is too fast since the compressor is quickly started is alleviated, and the problems that due to too large differential pressure between an inlet and an outlet of an expansion valve, the temperature of the refrigerant from the outlet of the expansion valve is too low, and compressor lubricating oil mixed with the refrigerant is frozen so as to cause the blockage of a pipeline are avoided.
Description
technical field [0001] The invention relates to the field of air conditioner control, in particular to an air conditioner heating and defrosting control method, an air conditioner and a storage medium. Background technique [0002] At present, many inverter air conditioners use electronic expansion valves with adjustable openings to throttle. At the same time, the expansion valve is directly and rapidly adjusted from the maximum opening in the defrosting process to the initial heating opening for the next normal heating. The risk brought by this is because the expansion valve exits defrosting The maximum opening of the compressor is adjusted to a small initial opening, and the frequency of the compressor is rapidly increased, resulting in the temperature near the expansion valve in the pipeline being too low, causing the compressor lubricating oil to solidify and causing pipeline blockage, resulting in heating failure question. [0003] The above content is only used to as...
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IPC IPC(8): F24F11/42F24F11/86F24F11/871
CPCF24F11/42F24F11/86F24F11/871
Inventor 陈华伟
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD