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Air conditioner control method and device and air conditioner

A control method and air conditioner technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve the problem that the current of the air conditioner is not very large, the protection of the compressor cannot be stopped, and the demagnetization of the coil can be increased. Risk and other issues

Pending Publication Date: 2022-04-12
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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Problems solved by technology

[0003] However, when there are abnormal faults such as short circuit of the external fan during cooling and short circuit of the internal fan during heating, the current of the air conditioner is often not very large and cannot reach the preset protection threshold
For example, in the condition of high temperature cooling, the inverter air conditioner has low working frequency and low current. If the AC motor overheats and trips, the condensing pressure of the compressor will rise rapidly, causing the compressor to stall and the coil current will increase rapidly. , increasing the risk of coil demagnetization, but because the current of the air conditioner is small at this time, it cannot reach the preset protection threshold, and the traditional protection scheme cannot realize the shutdown protection of the compressor

Method used

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  • Air conditioner control method and device and air conditioner
  • Air conditioner control method and device and air conditioner
  • Air conditioner control method and device and air conditioner

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0052] It should be understood that in the description of the embodiments of the present invention, if there are descriptions of "first", "second", etc., it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implicitly indicating The number of indicated technical features or implicitly indicates the order of the indicated technical features. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be th...

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Abstract

The embodiment of the invention discloses an air conditioner control method and device and an air conditioner. The air conditioner control method comprises the steps that a first outdoor unit current value of the air conditioner at the first moment is obtained; acquiring a second outdoor unit current value of the air conditioner at a second moment, wherein the second moment is a moment after the first moment passes through a preset time interval; determining a first current change value according to the first outdoor unit current value and the second outdoor unit current value; and under the condition that the first current change value is larger than a first current change threshold value, the compressor is controlled to be closed. According to the embodiment of the invention, when the air conditioner has an abnormal fault, the compressor can be controlled to be closed in time by determining the current change of the outdoor unit, so that shutdown protection of the compressor is realized.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner control method, device and air conditioner. Background technique [0002] At present, the abnormal protection of the air conditioner is judged by the detected current value, that is, when the detected current value is greater than the preset protection threshold within a certain period of time, it is determined that the air conditioner has an abnormal fault and the compressor is shut down Treatment to protect the core component of the air conditioner - the compressor. [0003] However, when there are abnormal faults such as a short circuit of the external fan during cooling and a short circuit of the internal fan during heating, the current of the air conditioner is often not very large and cannot reach the preset protection threshold. For example, the inverter air conditioner works at a low frequency and the current is not large in the case o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/61F24F11/64F24F11/86F24F11/32
Inventor 何长璟邱才光
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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