Control method, device and air conditioner for preventing air conditioner refrigerant migration
A refrigerant migration and control device technology, which is applied in the control input related to air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., can solve the problem of liquid refrigerant damage to the compressor, affect the user's sense of use, and reduce air conditioning. To solve problems such as the service life of the device, to achieve the effect of preventing service life, protecting operation reliability and high universality
Active Publication Date: 2021-05-14
AUX AIR CONDITIONING LTD BY SHARE LTD
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[0003] However, after the refrigerant migrates to the compressor for a long time, when the compressor starts up again, a large amount of liquid refrigerant accumulated will damage the compressor, reduce the service life of the air conditioner, and affect the user's sense of use
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[0036] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0037] When the air conditioner is not used for a long time, and the indoor and outdoor temperature difference is large, the existing technology often has the technical problem that the refrigerant migrates to the compressor, thereby affecting the operational reliability of the compressor at the start-up stage. In view of this, the present invention provides a The control method and device for preventing the migration of the air conditioner refrigerant, and the air conditioner can be adjusted when the air conditioner is not used for a long time and the indoor and outdoor temperature difference is large by comparing the indoor and outdoor temperature difference with the preset temperature, and the duration of the temperature difference with the preset time. The opening of the electronic expansion valve prevent...
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A control method for preventing refrigerant migration of an air conditioner, comprising: after the air conditioner is shut down, detecting the indoor ambient temperature and the outdoor ambient temperature at intervals of the first time; controlling the electronic expansion of the air conditioner according to the indoor ambient temperature and the outdoor ambient temperature valve opening. The present invention can adjust the opening degree of the electronic expansion valve when the air conditioner is not used for a long time and the indoor and outdoor temperature difference is large by comparing the indoor and outdoor temperature difference with the predetermined temperature, as well as the duration of the temperature difference and the predetermined time, so as to prevent or reduce the large temperature difference between the inside and outside. When the refrigerant migrates to the compressor, it protects the operation reliability of the compressor during startup and prevents the service life of the air conditioner and the user's sense of use from being affected.
Description
technical field [0001] The invention relates to the field of air conditioner control, in particular to a control method and device for preventing refrigerant migration of an air conditioner and an air conditioner. Background technique [0002] When the air conditioner is not used for a long time and the temperature difference between the inside and the outside is large, for example, the indoor temperature in winter in the Northeast region reaches 20°C, the outdoor temperature reaches -20°C, and the indoor and outdoor temperature difference is as high as 40°C. , Under the action of the pressure difference between the inner and outer sides of the refrigerant medium in the air conditioning system, the refrigerant migration often occurs, that is, it moves from the high-pressure side (high temperature) to the low-pressure side (low temperature). [0003] However, after the refrigerant migrates to the compressor for a long time, when the compressor starts up again, a large amount ...
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IPC IPC(8): F24F11/30F24F11/64F24F110/10F24F110/12
Inventor 汪云霞曾友坚
Owner AUX AIR CONDITIONING LTD BY SHARE LTD