Defrosting control method for constant-frequency air conditioner

A control method and air-conditioning technology, applied in heating and ventilation control systems, refrigerators, refrigeration components, etc., can solve the problems of accelerated defrosting efficiency, low efficiency, and single defrosting process
CN110836444AActive Publication Date: 2020-02-25QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
Publication Date
2020-02-25

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Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to a defrosting control method for a constant-frequency air conditioner. In order to improve the defrosting efficiency of the constant-frequency air conditioner, the defrosting control method for the constant-frequency air conditioner comprises the following steps that under the situation that the constant-frequency air conditioner is in the heating working condition, the indoor temperature is detected every preset time; and whether the constant-frequency air conditioner enters into a defrosting mode ornot is judged according to the decreasing speed of the indoor temperature. The change trend of the indoor temperature is innovatively utilized to represent the frosting degree of an external unit, therefore, the time when the air conditioner enters into the defrosting mode is judged, the constant-frequency air conditioner is prevented from frequently entering into the defrosting mode, the defrosting effect is ensured, and the user experience is improved.
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Description

technical field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to a defrosting control method for a fixed-frequency air conditioner. Background technique

[0002] As a device that can adjust the indoor ambient temperature, the air conditioner works on the principle that the indoor ambient temperature is reduced or increased by the refrigerant passing through the circulation pipeline through high-pressure / low-pressure / gas / liquid state transitions, that is, from From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in heating operation, if the temperature of the outdoor coil is too low under certain humidity conditions, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger and affect the cooling performance of the air conditioner. The thermal effect reduces the comfort of the indoor ...

Claims

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