Defrosting method and system for air conditioner

An air conditioner and frost sensor technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of inaccurate resistance of defrost sensors, thick frosting of air conditioners, affecting heating effects, etc. , to achieve the effect of improving heating effect, reasonable defrosting and increasing reliability

CN102901182AActive Publication Date: 2013-01-30QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-01-30

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Abstract

The invention discloses a defrosting method and a defrosting system for an air conditioner. The defrosting method comprises the following steps of: 10, electrifying the air conditioner for running and heating; 20, judging, namely (A) judging whether the outdoor environmental temperature is smaller than and equal to first preset temperature, (B) judging whether continuous running time of a heating compressor reaches first preset time, and judging whether accumulative running time reaches second preset time, (C) judging whether the continuous running time of the heating compressor reaches third preset time, and making accumulative running time reach fourth preset time, (D) judging whether the temperature of a defrosting sensor Te or Tc is smaller tan and equal to second preset temperature, keeping the temperature for fifth preset time, and making the accumulative running time reach fifth preset time, and (E) judging whether to defrost manually; and 30, determine to perform timing defrost, automatically defrost, manually defrost or not defrost according to a judging result obtained in the step 20. By the scheme, the problems that when the air conditioner is used for heating, a heating effect is influenced due to a relatively long defrosting period, and the air conditioner cannot defrost, or defrosts after a long time because the environmental temperature is relatively low can be solved.
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Description

technical field

[0001] The present invention relates to a defrosting method and its defrosting system, more specifically, to an air conditioner defrosting method and its defrosting system. Background technique

[0002] When the air conditioner is in heating operation, when frost forms on the condenser but does not reach the defrosting condition in a short time, or when the air conditioner is heating in a low-temperature environment, that is, below 7°C, the air conditioner does not enter defrosting or takes a long time At this time, due to the thick frost on the condenser, the heat exchange effect of the condenser is poor, and people will feel uncomfortable.

[0003] For the prior art, a defrosting sensor is generally used for control, and when the defrosting sensor reaches a specified temperature value, the machine enters into defrosting. If the defrost sensor is used to control the defrosting of the air conditioner, the following situations of inaccurate control will occur...

Examples

Embodiment Construction

[0039] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0040] figure 1 It is a control flow diagram of an embodiment provided by the present invention. The defrosting method of the air conditioner comprises the following steps:

[0041] S10: The air conditioner is powered on and runs for heating;

[0042] S20: Make the following five judgments:

[0043] A. Determine whether the outdoor ambient temperature is less than or equal to 7°C;

[0044] B. Determine whether the continuous running time of the heating compressor reaches 10 minutes, and whether the cumulative running time reaches 50 minutes;

[0045] C. Determine whether the continuous operation time of the heating compressor has reached 10 minutes, and the operation has accumulated to 45 minutes;

[0046] D. Determine whether the temperature of the defrosting sensor Te or Tc is less than or eq...