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Control method, device and air conditioner for reducing noise by controlling pressure difference

A control method and technology for air conditioners, which are applied in heating and ventilation control systems, heating methods, noise suppression, etc., can solve the problem of large noise of throttling devices, and achieve the effects of reducing noise, reducing flow rate, and improving comfort.

Active Publication Date: 2021-09-21
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the embodiments of the present invention is the excessive noise of the throttling device of the indoor unit, so as to improve the comfort of indoor users

Method used

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  • Control method, device and air conditioner for reducing noise by controlling pressure difference
  • Control method, device and air conditioner for reducing noise by controlling pressure difference
  • Control method, device and air conditioner for reducing noise by controlling pressure difference

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Embodiment Construction

[0042] At present, with the continuous development of air conditioners, people put forward higher requirements for the comfort of air conditioners, and noise is one of the most important indicators affecting user comfort. Excessive noise will seriously affect the user experience, so solving the noise problem of air conditioners is a key issue in the industry at present.

[0043] At present, the main cause of common noise is the noise caused by equipment vibration. The main solution is to reduce the vibration through structural optimization; the other is the noise caused by the flow of refrigerant. The main solution is to control the flow rate of refrigerant and flow to reduce noise. The throttling device is the part most prone to noise, because the pressure difference before and after the throttling changes greatly, and it also hinders the flow of refrigerant.

[0044] For multi-connected air conditioning systems, one outdoor unit needs to be equipped with multiple indoor uni...

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Abstract

Embodiments of the present invention provide a control method, device and air conditioner for reducing noise by controlling pressure difference, and relate to the technical field of air conditioners. The method includes: judging whether the air conditioner is switched from the non-heating mode to the heating mode and the air conditioner continues to run in the heating mode for a preset time after the four-way reversing valve of the air conditioner performs a reversing action; The first pressure of the pipeline before the throttle valve of the internal machine and the second pressure of the pipeline after the throttle valve of the internal machine; subtract the second pressure from the first pressure to obtain the pressure difference before and after the throttle valve of the internal machine; The pressure difference before and after the throttle valve controls the opening of the throttle valve of the internal unit and the throttle valve of the external unit of the air conditioner, so as to reduce the pressure difference between the front and rear of the throttle valve of the internal unit. This method can adjust the opening of the throttle valve of the internal unit and the throttle valve of the external unit according to the pressure difference before and after the throttle valve of the internal unit, so as to reduce the pressure difference before and after the throttle valve of the internal unit, thereby reducing the flow rate of the refrigerant , reduce noise and improve the comfort of indoor users.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method, device and air conditioner for reducing noise by controlling pressure difference. Background technique [0002] At present, with the continuous development of air conditioners, people put forward higher requirements for the comfort of air conditioners, and noise is one of the most important indicators affecting user comfort. Excessive noise will seriously affect the user experience, so solving the noise problem of air conditioners is a key issue in the industry at present. [0003] For multi-connected air conditioning systems, one outdoor unit needs to be equipped with multiple indoor units. Not only the outdoor unit has a throttling device, but each indoor unit also has a throttling device. If the throttle device of the indoor unit (such as the throttle valve of the indoor unit) is heated in winter, if the front-to-back pressure difference is too larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/32F24F11/64F24F11/65F24F11/84F24F11/88F24F13/24F24F130/40
CPCF24F13/24F24F2013/247F24F11/32F24F11/64F24F11/65F24F11/84F24F11/88F24F2130/40
Inventor 刘合心陈华王猛
Owner NINGBO AUX ELECTRIC
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