Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner

An anomaly detection and control method technology, applied in space heating and ventilation, heating and ventilation control systems, heating methods, etc., can solve problems such as damage to air-conditioning compressors, and achieve the effect of solving damage to air-conditioning compressors

Active Publication Date: 2014-10-15
GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD
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Problems solved by technology

[0003] The object of the present invention is to provide an abnormal detection and control method for refrigerant circulation of an air conditioner, aiming to solve the problem that the air conditioner compressor is damaged due to the refrigerant blocking the expansion valve of the outdoor unit of the air conditioner

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  • Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner

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Embodiment Construction

[0024] 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.

[0025] figure 1 It shows the implementation flow of the abnormal detection and control method of the refrigerant cycle of the air conditioner provided by the embodiment of the present invention. For the convenience of description, only the parts related to the present invention are shown, and the details are as follows:

[0026] In step S1, the outdoor ambient temperature, the indoor ambient temperature, the operating frequency of the compressor, the opening degree of the expansion valve, and the input power of the air conditioner are obtained during the operation of the air conditioner. Step S1 s...

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Abstract

The invention belongs to the technical field of air conditioner control, and provides an air conditioner and a detection control method and device for the abnormal coolant circulation of the air conditioner. The method comprises the steps of in the operation process of the air conditioner, obtaining corresponding rated input power from a preset correlated database according to outdoor environment temperature, indoor environment temperature, operation frequency of a compressor and the opening degree of an expansion valve, judging that the coolant circulation is abnormal when the difference between the current air conditioner input power and the rated input power is larger than a power difference reference value, recording the abnormal times, and restarting the compressor to drive the coolant circulation to restore normal after the compressor is stopped for certain time if the abnormal times do not achieve the preset continuous abnormal times; if the normal times achieve the preset continuous abnormal times, showing that the coolant circulation cannot be restored normal, controlling the air conditioner to be stopped to avoid the damage of the compressor, and sending an abnormal prompt to notify a user, thus solving the problem that the air conditioner compressor is damaged due to the fact that the expansion valve of an air conditioner outdoor unit is blocked by a coolant.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning control, and in particular relates to an air-conditioner and a method and device for detecting and controlling the abnormality of the refrigerant circulation thereof. Background technique [0002] The operating environment faced by the air conditioner in the daily application process is relatively complicated. Under certain working conditions, the refrigerant inside the outdoor unit of the air conditioner will be blocked at the expansion valve due to some reasons. For example: under the heating condition, when the defrost ends and the compressor restarts, due to the low ambient temperature, high system pressure and high viscosity of the refrigerant, the refrigerant will easily block the expansion valve of the outdoor unit of the air conditioner when the compressor starts, and once If the expansion valve is blocked, the refrigerant circulation will be abnormal. In the case of abnormal ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 王宝彬
Owner GUANGDONG MIDEA GRP WUHU REFRIGERATING EQUIP CO LTD
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