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Noise control method of fan of outdoor unit of air conditioner

An air conditioner outdoor unit and noise control technology, which is applied in the field of noise control and fan noise control, can solve the problems of affecting the cooling and heating effect of the air conditioner, the reduction of heat exchange rate and heat exchange efficiency, and the poor versatility of fan parts, so as to avoid Frequency superposition, improved comfort, low noise effect

Active Publication Date: 2019-06-11
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods all have disadvantages. The former needs to develop a new blade, and the versatility of the fan parts is poor; the latter leads to a decrease in heat transfer capacity and heat transfer efficiency, which affects the cooling and heating effect of the air conditioner.

Method used

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Embodiment Construction

[0012] The specific steps of the noise control method for the fan of the air conditioner outdoor unit of the present invention are as follows.

[0013] a. The main controller of the air conditioner detects the number of fans of the outdoor unit of the air conditioner, and judges whether it is a DC fan. If the number of fans exceeds 1 and they are all DC fans, proceed to the next step.

[0014] b. From the highest speed Amax of each fan to the lowest speed Amin, it is divided into N levels, and the speed difference of each level is (Amax—Amin) / N; for example, the highest speed Amax of the fan is generally 1000-1500rps, such as 1000rps, The minimum speed Amin is generally 0-200rps, such as 100rps, divided into 9 levels, and the speed difference of each level is 100rps.

[0015] c. Assign a serial number to each fan according to the physical location where each fan is installed; if there are four fans, mark them as fan 1, fan 2, fan 3, and fan 4.

[0016] d. When the motor is ru...

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Abstract

The invention discloses a noise control method of a fan of an outdoor unit of an air conditioner. The method comprises the specific steps: a, detecting the quantity of fans by a master controller of the air conditioner and judging whether the fans are direct current fans or not, and if the quantity of the fans is greater than 1 and the fans are the direct current fans, entering the next step; b, dividing the highest rotating speed Amax to the lowest rotating speed Amin of each fan into N stages, wherein the difference between adjacent two stages is (Amax-Amin) / N; c, endowing each fan with a serial number according to the physical position where each fan is mounted; and d, during operation of a motor, the rotating speeds of the fans, the serial numbers of which are odd numbers, are the same, and the rotating speeds of the fans, the serial numbers of which are even numbers, are the same, and the stage number difference of the odd number fans and the even number fans is 1; when the grade number of any one fan is equal to 0, the fan is stopped. The method can effectively reduce noise on the premise of using the fans with uniform blades and not reducing heat transfer.

Description

technical field [0001] The invention relates to a control method of an air conditioner, specifically a noise control method for a fan of an outdoor unit of an air conditioner, and more specifically, a method for controlling noise when there are more than two DC fans in an outdoor unit of an air conditioner. Background technique [0002] For the air conditioner, the heat exchange of the outdoor unit requires the operation of the outdoor fan to form forced convection heat exchange, and the heat exchange between the air and the coil ensures the cooling or heating of the system. Due to the existence of forced convection, noise will be generated, especially when there are multiple fans in the outdoor unit and the above-mentioned multiple fans are DC fans. The position and frequency are consistent, so the fans affect each other and resonate, resulting in further increase in noise, and as the air volume increases, the noise will naturally increase, which seriously affects the user ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/40F24F11/64F24F11/30
CPCF24F1/40F24F11/30F24F2110/00
Inventor 赵攀杨敏
Owner NINGBO AUX ELECTRIC
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