Motor control method for multi-fan air conditioner indoor unit

An air-conditioning indoor unit and motor control technology, applied in mechanical equipment, high-efficiency adjustment technology, climate sustainability, etc., can solve problems such as increased noise, large resonance, and poor user experience, so as to avoid resonance noise and improve comfort , evenly distributed effect

Active Publication Date: 2018-07-03
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to a series of problems such as high noise, high energy consumption, and inability to meet the comfort level of single-fan air-conditioning indoor units during operation, there are currently multi-fan air-conditioning indoor units. The fan components include at least two motors, and they are installed on the motor shaft The above fan blades, the one motor and one fan blade are a group, and each group of motors and fan blades uses an independent air duct to supply air. The air-conditioning indoor unit that uses the above-mentioned fan components has multiple low-power motors running at the same time. The effect can completely achieve the operation effect of high-power single motor. Compared with the single-fan air-conditioning indoor unit, the multi-fan air-conditioning indoor unit is equivalent to multiple independent air ducts for heat exchange with the heat exchanger, which increases the heat exchange area and In addition, the motor speed can be very low at the same cooling capacity output, and the noise is lower in theory. However, in practice, it is found that during the operation of the indoor unit of the multi-fan air conditioner, in order to make the temperature field distribution along the direction of the air outlet more uniform and improve the delivery Wind distance, multi-fan motors need to run at the same speed, but when the multi-fan motors run at the same speed, there will be a large resonance, which will increase the noise instead, and the user experience is very poor. When running at a constant differential speed, the uniform effect of the temperature field distribution along the direction of the air outlet cannot be guaranteed

Method used

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  • Motor control method for multi-fan air conditioner indoor unit

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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, a motor control method of a multi-fan air conditioner indoor unit, the fan components of the multi-fan air conditioner indoor unit include N motors, N≥2, and it includes the following steps:

[0016] 1) After receiving the start-up command, the multi-fan air conditioner indoor unit calculates the number of motors to be turned on M and the target speed R of the motors according to the set target air volume;

[0017] 2) If the number of motors to be turned on M is 1, then the actual speed of the motors to be turned on is set as the target speed R; if the number of motors to be turned on is M greater than or equal to 2, M unequal integers are randomly generated, Add the M mutually unequal integers to the target speed R and distribute them as actual speeds to the M required motors;

[0018] 3) M required start-up motors run at the actual speed allocated in step 2) and enter closed-loop control.

[0019] In step 2), the M mutually unequal integer...

Embodiment 2

[0023] The method for controlling the motor of an air-conditioning indoor unit including two fans is taken as an example for further description below, which includes the following steps:

[0024] 1) After receiving the start-up command, the indoor unit of the air conditioner calculates the number of motors to be turned on M and the target speed R of the motors according to the target air volume set by the remote control;

[0025] 2) If the number of motors to be turned on M is 1, set the actual speed of the motors to be turned on as the target speed R; if the number of motors to be turned on is M is 2, then call the existing random number generation function In the interval [1,12], two unequal integers are randomly generated, and these two unequal integers are added to the target speed R and distributed as the actual speed to the M required motors; for example, two The motors are the first motor and the second motor, and the two random integers obtained are 2 and 5 respective...

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Abstract

The invention discloses a motor control method for a multi-draught-fan air conditioner indoor unit. A draught fan part of the multi-draught-fan air conditioner indoor unit comprises N motors, wherein N is larger than or equal to 2. The motor control method includes the following steps that firstly, the number M of the motors needing to be started and the target rotating speed R of the motors are calculated according to the air quantity; if the number M of the motors needing to be started is 1, the actual rotating speed of the motor needing to be started is set to be the target rotating speed R, if the number M of the motors needing to be started is larger than or equal to 2, M unequal integers are generated randomly and are added to the target rotating speed R respectively to serve as the actual rotating speeds, and the actual rotating speeds are distributed to the M motors needing to be started; and thirdly, the M motors needing to be started run according to the actual rotating speeds distributed to the motors. According to the motor control method for the multi-draught-fan air conditioner indoor unit, it can be ensured that temperature field distribution is even in the air outlet direction, and high noise caused by multi-draught-fan motor resonance can also be effectively avoided.

Description

technical field [0001] The invention relates to a motor control method of a multi-fan air conditioner indoor unit. Background technique [0002] Due to a series of problems such as high noise, high energy consumption, and inability to meet the comfort level of single-fan air-conditioning indoor units during operation, there are currently multi-fan air-conditioning indoor units. The fan components include at least two motors, and they are installed on the motor shaft The above fan blades, the one motor and one fan blade are a group, and each group of motors and fan blades uses an independent air duct to supply air. The air-conditioning indoor unit that uses the above-mentioned fan components has multiple low-power motors running at the same time. The effect can completely achieve the operation effect of high-power single motor. Compared with the single-fan air-conditioning indoor unit, the multi-fan air-conditioning indoor unit is equivalent to multiple independent air ducts ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/77
CPCF24F11/77Y02B30/70
Inventor 周相康
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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