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Method for controlling direct-current motor of outdoor unit of air conditioner and air conditioner with method for controlling direct-current motor of outdoor unit of air conditioner

A technology for a DC motor and an air conditioner room, which is applied in the field of motor speed control, can solve the problems of low speed of the motor of the outdoor unit, poor heat exchange effect of the air conditioning system, and poor heat dissipation of the circuit board of the outdoor unit, etc., so as to avoid disturbance and increase the stability. , the effect of increasing the buffer space

Active Publication Date: 2014-06-18
PANASONIC HOME APPLIANCES AIR CONDITIONING GUANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the outside air temperature reaches the overload environment, the frequency of the compressor often drops to a relatively low level due to protection control, resulting in a relatively low speed of the outdoor unit motor
If the outdoor air volume is low, the heat transfer effect of the air conditioning system will be poor, and the heat dissipation of the outdoor unit circuit board will be poor.

Method used

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  • Method for controlling direct-current motor of outdoor unit of air conditioner and air conditioner with method for controlling direct-current motor of outdoor unit of air conditioner
  • Method for controlling direct-current motor of outdoor unit of air conditioner and air conditioner with method for controlling direct-current motor of outdoor unit of air conditioner
  • Method for controlling direct-current motor of outdoor unit of air conditioner and air conditioner with method for controlling direct-current motor of outdoor unit of air conditioner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The temperature sensor passes a set temperature threshold T 0 The temperature of the outdoor unit of the air conditioner is divided into a low-temperature zone and a high-temperature zone; when the control chip receives the temperature signal from the temperature sensor in the low-temperature zone, it controls the speed of the DC motor according to the frequency of the compressor; When the temperature signal of the sensor is in the high temperature area, the speed of the DC motor is controlled according to the temperature change of the outdoor unit of the air conditioner.

[0042]Further, by setting the temperature value T in the high temperature zone 1 and T 2 , divide the high temperature region into three different temperature intervals, and where T 0 1 2 ; The control chip controls the speed of the DC motor according to different temperature ranges.

[0043] see figure 2 , which is a flow chart of the motor control method of the outdoor unit in Embodiment 1. T...

Embodiment 2

[0054] Set the temperature threshold T in the control chip 0 and T 1 , and T 0 1 ; Divide the temperature of the outdoor unit of the air conditioner into a low temperature zone, an intermediate transition zone and a high temperature zone:

[0055] Air conditioner outdoor unit temperature T≤T 0 In the low temperature zone, the control chip controls the speed of the DC motor according to the frequency of the compressor. The higher the frequency of the compressor, the faster the speed of the DC motor;

[0056] T 0 1 is the intermediate transition zone, and when the temperature of the outdoor unit of the air conditioner is on the rise, the control chip controls the speed of the DC motor according to the frequency of the compressor; when the temperature of the outdoor unit of the air conditioner is on a downward trend, the control chip controls the speed of the temperature according to the temperature change;

[0057] T 1 ≤T is the high temperature zone. The control chip contr...

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Abstract

The invention relates to a method for controlling a direct-current motor of an outdoor unit of an air conditioner and the air conditioner with the method for controlling the direct-current motor of the outdoor unit of the air conditioner. The direct-current motor is in temperature association with the outdoor unit of the air conditioner to divide the temperatures of the outdoor unit of the air conditioner into a low temperature range and a high temperature range; in the high temperature range, the rotation speed of the direct-current motor is controlled according to the temperature, and the higher the temperature is, the higher the rotation speed of the direct-current motor is; in the low temperature range, the rotation speed of the direct-current motor is controlled according to the frequency of a compressor, and the higher the frequency of the compressor is, the rotation speed of the direct-current motor is. Compared with the prior art, the method and the air conditioner have the advantages that the temperatures of the outdoor unit of the air conditioner are detected through the arrangement of a temperature sensor, the reasonable rotation speed of the motor of the outdoor unit can be set, it is guaranteed that the outdoor air volume is not influenced in the overload environment, and the temperature raising risk of a circuit board is reduced while the heat exchanging effect of the air conditioner is improved.

Description

technical field [0001] The invention relates to a method for controlling the rotational speed of a motor, in particular to a method for controlling a DC motor of an outdoor unit of an air conditioner; the invention also relates to an air conditioner applying the above method. Background technique [0002] The frequency conversion air conditioner selects the special frequency conversion compressor on the basis of the ordinary air conditioner, and increases the frequency conversion control system. The existing motor speed control method of an outdoor unit of an inverter air conditioner adjusts the speed of the motor of the outdoor unit through compressor frequency feedback. Specifically, according to the frequency range of the compressor, different rotation numbers of the outdoor fan are correspondingly set. [0003] see figure 1 , which is a motor control flowchart of an outdoor unit in the prior art. Preset the rotation numbers of outdoor fans I, II and III in the control...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 黎伟峰
Owner PANASONIC HOME APPLIANCES AIR CONDITIONING GUANGZHOU CO LTD
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