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Air conditioner control method, device and air conditioner

A control method and technology of a control device are applied in the field of devices, air conditioner control methods, and air conditioners, which can solve the problems of surges, inability to effectively protect electronic components, etc., so as to improve reliability and solve the surge caused by power-off and power-on. Current, the effect of improving the service life

Active Publication Date: 2019-07-02
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose an air conditioner control method to solve the problem that there is a surge in the power-on process after the air conditioner is powered off, and the electronic components cannot be effectively protected

Method used

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  • Air conditioner control method, device and air conditioner
  • Air conditioner control method, device and air conditioner
  • Air conditioner control method, device and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 2 As shown, an air-conditioning control method includes, respectively obtaining the instantaneous voltage V of the DC input terminal dc and the instantaneous voltage at the AC input V ac ;Determine the instantaneous voltage V at the DC input terminal dc and the instantaneous voltage at the AC input V ac Whether the difference is greater than the first preset value X; if yes, time the duration T for which the difference is greater than the first preset value X x , the duration T x Greater than the first preset value T 1 , it is determined that the air conditioner is powered off, and sends a power-off signal to the control device, and the control device turns off the relay module and the load running on the air conditioner; otherwise, it is determined that the air conditioner is not powered off.

[0041] The present invention effectively solves the problem of surge current generated when the air conditioner is powered off in a short period of time, an...

Embodiment 2

[0043] Such as image 3 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that an air-conditioning control method specifically includes the following steps:

[0044] S1. Obtain the AD sampling value Z of the AC input terminal in real time 1 And the AD sampling value Z of the DC input terminal 2 ;

[0045] Specifically, because the voltage waveform at the AC input terminal is an input waveform with a sine wave change. Therefore, to obtain the AD sampling value Z of the AC input terminal in real time 1 ,Z 1 The range 0-1023. The AD sampling value Z of the DC input terminal 2 Generally, there is no change under normal circumstances, but in case of power-off or power-on, the AD sampling value Z of the DC input terminal 2 There will still be a sinusoidally varying input waveform. Therefore, to obtain the AD sampling value Z of the DC input terminal in real time 2 ,Z 2 The range 0-1023.

[0046] The slow start is judged by obtaining ...

Embodiment 3

[0069] A control device, including a relay module, which is used to change the state of the circuit; when the power is off, the circuit connection on both sides is disconnected; when the power is on, the circuit connection on both sides is closed;

[0070] The control module obtains the instantaneous voltage V of the DC input terminal respectively dcand the instantaneous voltage at the AC input V ac ;Determine the instantaneous voltage V at the DC input terminal dc and the instantaneous voltage at the AC input V ac Whether the difference is greater than the first preset value X; if yes, time the duration T for which the difference is greater than the first preset value X x , the duration T x Greater than the first preset value T 1 , it is determined that the air conditioner is powered off, and a power-off signal is sent to the control device, and the control device turns off the relay module and the load of the air conditioner; otherwise, it is judged that the air conditio...

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Abstract

The invention provides an air conditioner control method and device and an air conditioner. The method comprises the steps of respectively acquiring an instantaneous voltage V<dc> of a DC input end and an instantaneous voltage V<ac> of an AC input end; judging whether difference between the instantaneous voltage V<dc> of the DC input end and the instantaneous voltage V<ac> of the AC input end is larger than a first preset value X or not; if yes, counting continuous time Tx when the difference is larger than the first preset value X, judging that the air conditioner is in power failure if the continuous time Tx is larger than the first preset value T1, sending a power-failure signal to a control device, and switching off a relay module and a load run by the air conditioner by the control device; and otherwise, judging that the air conditioner is not in power failure. By the slow starting control method and device of a frequency-variable air conditioner power supply and the air conditioner, the problem that a surge current can be generated by power failure and power-on within short time can be solved, and the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power supply control, in particular to an air conditioner control method, device and air conditioner. Background technique [0002] In the prior art, for the external unit control module of a conventional inverter air conditioner, there is a large electrolytic capacitor on the bus to avoid damage to electronic components due to the impact of surge current when power is turned on. The usual practice is to connect a PTC resistor in series in the main circuit, and short-circuit the PTC resistor through the control relay after power-on for a period of time. This control process is a slow start process, which is generally only executed once when the chip is powered on and reset. [0003] If the air conditioner is powered off during standby, the large electrolytic capacitor has a long discharge process, generally 30 to 50 seconds. During the discharge process, the chip is always powered, and the relay will not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/88F24F11/32
CPCF24F11/32F24F11/88
Inventor 黄宁
Owner AUX AIR CONDITIONING LTD BY SHARE LTD