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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

Active Publication Date: 2020-02-25
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For fixed-frequency air conditioners, the power supply frequency cannot be changed. Even if the indoor temperature reaches the set temperature, the air conditioner will not automatically adjust the cooling or heating speed.
Since the temperature of the outer coil of the fixed-frequency air conditioner does not have a temperature sensor, the temperature of the outer coil cannot be obtained, so the defrosting timing of the fixed-frequency air conditioner cannot be judged by parameters such as the temperature of the outer coil
Moreover, the existing defrosting process lacks auxiliary means to speed up the defrosting efficiency, resulting in a single defrosting process and low efficiency

Method used

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Embodiment Construction

[0018] 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.

[0019] First refer to figure 1 , figure 1 It is the main flowchart of the defrosting control method of the present invention. Such as figure 1 As shown, the defrosting control method for the fixed frequency air conditioner of the present invention includes: S110, when the fixed frequency air conditioner is in the heating condition, detect the indoor temperature every preset time; S120, acc...

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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.

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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Application Information

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IPC IPC(8): F24F11/42F24F11/64F24F11/61F24F11/65F25B47/02F24F140/20
CPCF25B47/025F25B2347/02F24F11/42F24F11/61F24F11/64F24F11/65F24F2140/20
Inventor 许文明罗荣邦
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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