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Method for controlling defrosting of air conditioner

A control method and technology of an air conditioner, applied in the direction of control input involving air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., can solve problems such as indoor temperature fluctuations, prevent excessive fluctuations, reduce The effect of small fluctuations

Active Publication Date: 2018-09-28
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

When it is judged that the air conditioner is in the frosting state, the air conditioner will enter the defrosting mode, but this method is likely to cause large fluctuations in the indoor temperature

Method used

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  • Method for controlling defrosting of air conditioner

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Embodiment Construction

[0016] In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Example. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0017] Such as figure 1 As shown, the defrosting control method of the present invention includes the following steps: S110. During the heating operation of the air conditioner, determine whether the air conditioner meets the defrosting conditions; Before the mode, the indoor ambient temperature and the outdoor ambient temperature are obtained; S130, according to the values ​​of pn and dn, s...

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Abstract

The invention belongs to the technical field of air conditioners, in particular to a method for controlling defrosting of an air conditioner. In order to prevent over-large fluctuation of a room temperature during defrosting, the method for controlling the defrosting of the air conditioner disclosed by the invention comprises the following steps: judging whether the air conditioner meets a defrosting condition or not in a heating operation process of the air conditioner; acquiring an indoor ambient temperature and an outdoor ambient temperature before the air conditioner enters into a defrosting mode if the air conditioner meets the defrosting condition; and selectively controlling the operation frequency of a compressor, an opening degree of a throttling valve or rotation speed of an airblower of an indoor unit and / or an outdoor unit according to values of pn and dn, wherein pn is equal to the preset temperature minus the outdoor ambient temperature, and dn is equal to the indoor ambient temperature minus the outdoor ambient temperature. According to the method disclosed by the invention, before the air conditioner enters into the defrosting mode, based on the values of dn and pn, the operation frequency of the compressor, the opening degree of the throttling valve or the rotation speed of the air blower of the indoor unit and / or the outdoor unit are selectively controlled soas to store a part of energy; and in the defrosting process of the air conditioner, the part of energy is supplemented to the inside of a room again, so that the over-large fluctuation of the room temperature during defrosting can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. 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 environment and affec...

Claims

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Application Information

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IPC IPC(8): F24F11/41F24F11/89F24F11/86F24F11/77F24F11/64F24F11/84F24F110/10F24F110/12
CPCF24F11/41F24F11/64F24F11/77F24F11/84F24F11/86F24F11/89F24F2110/10F24F2110/12Y02B30/70
Inventor 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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