Fan noise control method, device and air conditioning equipment

A noise control and fan technology, applied in mechanical equipment, heating and ventilation control systems, air-conditioning systems, etc., can solve problems such as the inability to effectively control fan noise, achieve the effect of reducing noise value, reducing noise peaks, and improving comfort

Active Publication Date: 2021-11-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a fan noise control method, device, and air-conditioning equipment to solve the problem that fan noise cannot be effectively controlled in the prior art

Method used

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  • Fan noise control method, device and air conditioning equipment
  • Fan noise control method, device and air conditioning equipment
  • Fan noise control method, device and air conditioning equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a fan noise control method, which performs noise reduction for multiple fans (that is, at least two fans) based on phase cancellation. The target noise reduction unit includes at least two fans, and the at least two fans are identical fans and have the same rotational speed at the same moment. The target noise reduction unit can be an air conditioner internal unit or an air conditioner external unit.

[0043] figure 1 It is a flow chart of the fan noise control method provided by Embodiment 1 of the present invention, such as figure 1 As shown, the method includes the following steps:

[0044] S101. Determine the noise peak frequency corresponding to the current rotational speed of the fan.

[0045] Specifically, the noise peak frequency corresponding to the current speed of the fan may be determined according to the correspondence between the pre-stored speed gear and the noise peak frequency. Correspondingly, before determining the noise p...

Embodiment 2

[0066] Based on the same inventive concept, this embodiment provides a fan noise control device, which can be used to implement the fan noise control method described in the above embodiments. The device can be realized by software and / or hardware, and generally the device can be integrated in the air conditioner controller. The target noise reduction unit includes at least two fans, and at least two fans have the same rotational speed at the same moment.

[0067] Figure 6 It is a structural block diagram of the fan noise control device provided by Embodiment 2 of the present invention, as Figure 6 As shown, the device includes:

[0068] A determination module 61, configured to determine the noise peak frequency corresponding to the current rotational speed of the fan;

[0069] The control module 62 is configured to separately control the voltage phases of at least two fans according to the noise peak frequency and the number of fans, so that the noise phases of the at le...

Embodiment 3

[0085] This embodiment provides an air conditioner, including: the fan noise control device described in the second embodiment above.

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Abstract

The invention discloses a fan noise control method, device and air-conditioning equipment. Wherein, the target noise reduction unit includes at least two fans, and at least two of the fans have the same speed at the same time, the method includes: determining the noise peak frequency corresponding to the current speed of the fan; number, respectively controlling the voltage phases of at least two of the fans so that the noise phases of at least two of the fans at the noise peak frequency cancel each other out. The invention controls the voltage phase of each fan inside the unit, so that the noise phases emitted by each fan at the noise peak frequency point at the current speed cancel each other, thereby reducing the noise peak value, reducing the overall noise value of the air conditioner, and improving the comfort of the air conditioner.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular, to a fan noise control method, device and air conditioning equipment. Background technique [0002] How to control the noise of air conditioners has always been a hot topic. As we all know, the fan is the main source of air-conditioning noise, so it is particularly important to control the noise of the fan. The noise of the fan is mainly generated by the operation of its motor. The motor will vibrate when it is running. When the vibration frequency value is close to the natural frequency point of the unit, the noise value of the unit will be greatly amplified. [0003] The current solution is generally to reduce the vibration value, change the fixed frequency point of the unit or increase the damping of the unit. However, the above method is difficult to reduce the noise value to a value that meets the requirements, and cannot effectively control the noise. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/30F24F11/61F24F11/64F24F1/40F24F13/24F24F130/40
CPCF24F1/40F24F13/24F24F2013/247F24F11/30F24F11/61F24F11/64F24F2130/40
Inventor 肖义杰陈生吴超金国华张磊
Owner GREE ELECTRIC APPLIANCES INC
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