Frequency control method and system for air conditioner defrosting starting process, and air conditioner

A technology of frequency control and air conditioning, which is applied in heating and ventilation control systems, noise suppression, space heating and ventilation, etc. It can solve the problems of broken pipes and large vibrations of pipes, etc.

Active Publication Date: 2016-12-07
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When entering the defrosting time, the compressor usually runs at a relatively high frequency. At this time, the compressor is directly turned off, and the pressure of the refrigerant is released instantly, resulting in excessive vibration of the piping, and there is even the risk of the piping breaking. noise

Method used

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  • Frequency control method and system for air conditioner defrosting starting process, and air conditioner
  • Frequency control method and system for air conditioner defrosting starting process, and air conditioner
  • Frequency control method and system for air conditioner defrosting starting process, and air conditioner

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Embodiment Construction

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0037] Such as figure 1 As shown, it is a schematic flow chart of the frequency control method of the air-conditioning defrost entry process of the present invention, including the following steps:

[0038] Step 1, collecting the current operating frequency of the compressor when the defrosting condition of the air conditioner is met;

[0039] Step 2, compare the current compressor operating frequency with the preset stop frequency, and obtain the frequency reduction rate and stabilization time according to the comparison result;

[0040] Step 3, controlling the compressor to drop from the current compressor operating frequency to the shutdown frequency according to the frequency reduction rate and continue to run ...

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Abstract

The invention relates to the field of control over air conditioners, in particular to a frequency control method and system for an air conditioner defrosting starting process, and an air conditioner. The method comprises the following steps that the current compressor operation frequency meeting the air conditioner defrosting condition is collected; the current compressor operation frequency and a preset stop frequency are compared, and the frequency reduction speed and stabilization time are obtained according to the comparison result; a compressor is controlled to decrease to the stop frequency from the current compressor operation frequency according to the frequency reduction speed and stop operating after continuously operating for the stabilization time at the stop frequency; and after the operation stop time reaches a preset stop time, the compressor is controlled to operate according to a preset defrosting frequency. When it is judged that the defrosting process needs to be started, a proper frequency control method is selected according to the current compressor operation frequency, the refrigerant pressure of the system is fully released in the frequency control process, and therefore vibration of piping is reduced, and the danger of breakage of the piping is avoided. Meanwhile, noise is lowered, and the air conditioner experience of a user is improved.

Description

technical field [0001] The invention relates to the field of frequency conversion air conditioner control, in particular to a frequency control method, system and air conditioner for the defrosting process of an air conditioner. Background technique [0002] In the inverter air conditioner system, when the air conditioner is in heating operation, if frost forms on the condenser of the outdoor unit, it will easily affect the heat exchange effect of the air conditioner, and the air conditioner needs to perform a defrosting process to ensure the heating effect. In the prior art, the usual defrosting action of the air conditioner is as follows: first turn off the compressor, delay the closing of the four-way valve and the external fan for a period of time, then delay for a period of time When defrosting is completed, the compressor is turned off, the external fan is turned on, and the four-way valve is opened after a delay for a period of time, and the compressor is turned on af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F24F13/24
CPCF24F11/30F24F11/41F24F13/24F24F2013/247
Inventor 于光徐振坤黄招彬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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