Air conditioner control method and device, air conditioner and storage medium

A control method and air-conditioning technology, applied in the field of devices, air-conditioning control methods, air conditioners and storage media, can solve the problems of reducing the service life of compressors, compressor wear, affecting user comfort, etc., and achieve the effect of improving comfort

Active Publication Date: 2020-05-12
NINGBO AUX ELECTRIC
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  • Claims
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AI Technical Summary

Problems solved by technology

At the same time, the operation of the compressor under the condition of lack of lubricating oil will cause the wear of the compressor and reduce the service life of the compressor
At present, the most commonly used oil return method in the heating mode is to change the direction of the four-way reversing valve to return the oil from the heating mode to the cooling mode. At this time, the air conditioner suspends heating, which seriously affects the comfort of the user.

Method used

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  • Air conditioner control method and device, air conditioner and storage medium
  • Air conditioner control method and device, air conditioner and storage medium
  • Air conditioner control method and device, air conditioner and storage medium

Examples

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specific Embodiment

[0047] Some specific examples include,

[0048] Determine the lower limit of the compressor operating frequency in the oil return mode of the air conditioner by the following formula:

[0049] f 1 =Min{F 2 ,F 2 +a*(T 2 -T 1 )};

[0050] Where: F 1 It is the lower limit of compressor operating frequency in oil return mode; F 2 is the required oil return frequency of the compressor in normal operation mode; T 1 is the current outdoor real-time ambient temperature; T 2 is the outdoor ambient temperature under the normal operating mode in winter; a is the coefficient of the difference between the outdoor ambient temperature under the normal operating mode of the air conditioner in winter and the current outdoor real-time ambient temperature.

[0051] In terms of compressor operating frequency correction, the outdoor ambient temperature will affect the range of compressor frequency increase. When the ambient temperature increases, the viscosity of the lubricating oil decr...

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Abstract

The invention provides an air conditioner control method and device, an air conditioner and a storage medium, and relates to the technical field of air conditioners. The control method comprises the steps of obtaining a current real-time outdoor environment temperature and a current opening degree of an indoor electronic expansion valve when an instruction for operation in an oil-return mode is received; controlling a lower limit value of an operation frequency of a compressor during operation in the oil-return mode according to the current real-time outdoor environment temperature; and controlling the opening degree of the indoor electronic expansion valve according to a preset opening degree of the electronic expansion valve. Compared with the prior art, oil can be returned without direction changing during heating of an air conditioner in winter, oil-return heat supply pause of an indoor unit of the air conditioner is prevented, and the comfort of a user is improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device, an air conditioner and a storage medium. Background technique [0002] In the prior art, the oil return problem of the compressor has always been a key problem to be overcome in the air-conditioning industry. When the air-conditioning system is running, the lubricating oil in the compressor will be taken out of the compressor along with the flow of refrigerant, and will accumulate in the two devices, making the heat transfer effect of the evaporator and condenser worse, seriously affecting the heat transfer effect and system performance. Especially for multi-connected systems, due to the large number of indoor units, the opening degree of the electronic expansion valve of each indoor unit is also different, and a lot of lubricating oil is collected in the indoor unit. At the same time, the operation of the compresso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
CPCF25B49/02F25B2500/16F25B2600/02F25B2600/2513F25B2700/2106
Inventor 王猛刘潘刘合心黄春陈华邓赛峰余超群
Owner NINGBO AUX ELECTRIC
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