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Defrosting control method for air conditioner

A control method and technology for air conditioners, which are applied in heating and ventilation control systems, heating methods, and high-efficiency adjustment technologies, can solve problems such as indoor temperature fluctuations, and achieve the effect of reducing fluctuations and preventing excessive room temperature fluctuations.

Active Publication Date: 2018-12-18
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Defrosting control method for air conditioner

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Embodiment Construction

[0017] 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 described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Examples. 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.

[0018] Such as figure 1 As shown, the defrost control method of the present invention includes the following steps: S110, during the heating operation of the air conditioner, it is judged whether the air conditioner meets the defrosting conditions; S120, if so, before the air conditioner enters the defrosting mode, Obtain the compressor discharge temperature t, and obtain the compressor discharge...

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Abstract

The invention belongs to the technical field of air conditioners and particularly relates to a defrosting control method for an air conditioner. In order to prevent excessive room temperature fluctuation during defrosting, the method comprises the following steps that whether the air conditioner meets defrosting conditions or not is judged during heating operation of the air conditioner; if yes, the exhaust temperature t of a compressor is acquired before the air conditioner enters the defrosting mode, and the exhaust temperature t0 of the compressor is acquired again after a preset time interval; and t and t0 are compared, and the operating frequency of the compressor and the throttle valve opening or the fan rotation speed of an indoor unit and / or an outdoor unit are selectively controlled according to the comparison result. According to the defrosting control method for the air conditioner, before the air conditioner enters the defrosting mode, the operating frequency of the compressor and the throttle valve opening or the fan rotation speed of the indoor unit and / or the outdoor unit are selectively controlled according to the comparison result of t and t0 to store a part of energy, and in the defrosting process of the air conditioner, the part of energy is replenished indoors, so that excessive room temperature fluctuation during defrosting is effectively prevented.

Description

Technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a defrosting control method for an air conditioner. Background technique [0002] As a device that can adjust the indoor ambient temperature, the working principle of the air conditioner is to reduce or increase the indoor ambient temperature through the high-pressure / low-pressure / gas / liquid state conversion of the refrigerant between the circulating pipelines. From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is heating, under certain humidity conditions, if the temperature of the outdoor coil is too low, it will cause frosting, and the frosting of the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger, which will affect the air conditioner’s control. Thermal effect reduces the comfort of indoor environment and affects user experience. Therefore, when the air con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/64F24F11/77F24F11/84F24F11/86F24F11/871
CPCF24F11/42F24F11/64F24F11/77F24F11/84F24F11/86F24F11/871Y02B30/70
Inventor 许文明王飞张心怡罗荣邦丁爽袁俊军李皖皖李阳陈可兄
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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