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Air conditioner defrosting control method and system and air conditioner

A control method and air conditioner technology, applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc., can solve the problems of inability to accurately identify frosting of external units, incomplete defrosting, and affecting comfort, etc. Achieve fast, accurate and intelligent defrosting, avoid waste of electric energy, and improve user experience

Active Publication Date: 2020-07-14
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defrosting control technology of the existing air conditioner mostly uses the change of the outdoor unit coil temperature to identify the frosting situation of the outdoor unit, and then defrosts. Since the outdoor unit coil temperature only reflects the change of the outdoor unit heat exchanger temperature, it is subject to Affected by factors such as ambient temperature and air volume, there are still the following deficiencies: the real situation of frosting on the external unit cannot be accurately identified, the feedback time is long, and defrosting is performed when the frost layer is very thin, resulting in frequent defrosting and resulting in The thermal comfort is poor, and defrosting starts only when the frost layer is very thick, resulting in incomplete defrosting, frequent defrosting, and affecting comfort

Method used

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  • Air conditioner defrosting control method and system and air conditioner
  • Air conditioner defrosting control method and system and air conditioner
  • Air conditioner defrosting control method and system and air conditioner

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Embodiment Construction

[0061] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the following in conjunction with the attached Figure 1-7 Specific embodiments of the present invention are described in detail.

[0062] See attached figure 1 , the present invention provides a kind of air conditioner defrosting control method, comprising the following steps:

[0063] S100. Collect the initial wind speed V0 of the air outlet of the outdoor heat exchanger after the air conditioner is turned on for the first time t1 of the heating operation or exits the defrosting process for the first time t1;

[0064] S200. Collect the actual wind speed V at the air outlet of the outdoor heat exchanger every first cycle T1;

[0065] S300. Calculate the ratio Y of the actual wind speed V to the initial wind speed V0 and / or the difference ΔV of the actual wind speed adjacent to the first period T1;

[0066] S400. When the ratio Y and / or the...

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Abstract

The invention relates to an air conditioner defrosting control method and system and an air conditioner. The air conditioner defrosting control method comprises the steps that after the air conditioner is started and runs for heating for first time T1, the initial air speed V0 of an air outlet of an outdoor heat exchanger is collected; the actual air speed V of the air outlet of the outdoor heat exchanger is collected every other first period T1; the ratio Y of the actual air speed V to the initial air speed V0 and / or the difference value delta V of the actual air speeds in the adjacent firstperiods are calculated; when the ratio Y and / or the difference value delta V meet / meets the defrosting condition, the defrosting process is executed; and otherwise, the defrosting process is not executed. According to the air conditioner defrosting control method and system and the air conditioner, the frosting condition of the outdoor heat exchanger is reflected based on the change of the ratio of the actual air speed to the initial air speed and / or the change of the difference value of the actual air speeds in the adjacent first periods, the defrosting process is not affected by external factors such as the air conditioner using time, dust and rainwater, thus the accuracy of judging the defrosting process is improved, mistaken defrosting of the air conditioner is prevented, and waste ofelectric energy is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method, a control system and an air conditioner. Background technique [0002] The air conditioner is a device for adjusting the indoor ambient temperature. When the air conditioner is in heating operation, the outdoor heat exchanger exchanges heat with the outdoor ambient temperature. Under a certain humidity condition, if the temperature of the outdoor coil is too low, the Part of the water will be condensed and deposited in the outdoor heat exchanger, and the condensed water will stay on the fins, resulting in wind resistance, which will deteriorate the heat transfer of the outdoor heat exchanger and cause frosting. The generation of frost will further increase the wind resistance and deteriorate the heat transfer , thereby accelerating the rapid formation of the frost layer, and the formation of the frost layer further deteriorat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/64F24F110/32F24F110/12F24F140/20
CPCF24F11/42F24F11/64F24F2110/12F24F2110/32F24F2140/20
Inventor 魏华锋秦宪唐辉辉吴君
Owner NINGBO AUX ELECTRIC
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