CN-122001274-A - Control method and system for water-fetching motor of mobile air conditioner

CN122001274ACN 122001274 ACN122001274 ACN 122001274ACN-122001274-A

Abstract

The invention discloses a control method and a system for a water pumping motor of a mobile air conditioner, which relate to the technical field of air conditioners and aim to solve the problem of low water pumping efficiency of the existing air conditioner, and comprise the following steps of S1, checking initialization parameters, collecting current, moment and water level data, and calculating moment difference and current variation; the system comprises a controller, an execution module, a key motor rotating speed adjusting instruction, a system and a corresponding system, wherein the controller receives collected and calculated data, analyzes the data to generate a hierarchical cooperative control strategy, the execution module receives an electric signal of the controller to respond to the electric signal to execute the key motor rotating speed adjusting instruction, the system updates a moment difference and a water level state every set time, and performs mode switching according to different conditions. According to the invention, the water resistance change is fed back in real time through the moment difference, the response delay is low, and the water pumping efficiency is remarkably improved.

Inventors

LIN MINGQING
WANG QIAOGANG
LIU YANSONG
ZHENG DONGYU

Assignees

浙江先导热电科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251218

Claims (10)

1. The control method of the water beating motor of the mobile air conditioner is characterized by comprising the following steps of: S1, checking initialization parameters, collecting current, moment and water level data, and calculating moment difference and current variation; S2, the controller receives the collected and calculated data, and analyzes the data to generate a hierarchical cooperative control strategy; s3, the execution module receives the controller electrical signal to respond and execute a key motor rotating speed adjustment instruction; and S4, updating the moment difference and the water level state every set time, and switching modes according to different conditions.
2. The method for controlling a water supply motor of a mobile air conditioner according to claim 1, wherein the step S1 comprises: S11, after the refrigerating system unit is started and runs stably, checking initialization parameters according to the environmental working condition and the unit state; And S12, collecting current, moment and water level data in real time, calculating to obtain a current variation by combining an initial current calibration value, obtaining the impeller water resistance moment by combining a modified formula, and then obtaining a moment difference value.
3. The method for controlling a water pumping motor of a mobile air conditioner according to claim 2, wherein the current variation is a difference between a real-time working current value and an initial current calibration value, the moment difference is a difference between a driving moment M m of the water pumping motor and a water resistance moment M w of an impeller, and the water resistance moment M w of the impeller is obtained through the current variation according to a correction formula.
4. A method of controlling a water supply motor of a mobile air conditioner according to claim 1, 2 or 3, wherein the hierarchical cooperative control strategy is adjusted according to a water level state, and includes: S21, judging whether the water level is in a low water level area, if so, standing the motor, and if not, entering S22; s22, judging whether the water level is in a normal area, if so, maintaining the current motor rotation speed, and if not, entering S23; S23, judging whether the water level is in an adjusting area, carrying out step speed regulation based on the moment difference value, if not, entering a critical area, forcibly extracting to the highest rotating speed, and if the water level is not reduced in the set time, stopping.
5. The method for controlling a water supply motor of a mobile air conditioner according to claim 4, wherein the step speed regulation based on the torque difference value comprises: when the absolute value of the moment difference value is not greater than the deviation threshold value, judging that the motor maintains the current rotating speed; When the moment difference value is larger than the deviation threshold value, the motor carries out step-up; and when the moment difference value is smaller than the negative deviation threshold value, the motor performs step deceleration.
6. The method according to claim 1 or 5, wherein the step S3 includes sending the content of the hierarchical cooperative control strategy to the execution module in the form of an electrical signal, and the execution module adjusts the motor voltage by the PWM signal generated by the driving circuit, so as to control the motor speed.
7. The method for controlling a water supply motor of a mobile air conditioner according to claim 1 or 5, wherein the step S4 includes: if the water level signal is effective and the torque sensor is normal, a closed-loop dynamic balance mode is started; If the torque sensor fails and the current is normal, switching an open loop current model mode, and reporting a fault by synchronous equipment, wherein the torque sensor fails; If the water level is not less than 80%, switching an open loop forced speed-up mode, and taking precedence over other control logic to forcedly speed up to the maximum wind speed; If the communication is overtime, the open loop safety mode is switched, and the fan rotating speed and the water level threshold value are fixed for protection.
8. The control method of the water pumping motor of the mobile air conditioner according to claim 1 or 2, wherein the current is detected by a current detection unit, the current detection unit is arranged on a power supply line of an impeller driving motor, the moment is acquired by a moment sensor, and the water level data is detected by a multistage water level sensor vertically arranged on the inner wall of a water tank.
9. The method for controlling a water-spraying motor of a mobile air conditioner according to claim 8, wherein the torque sensor directly detects the torque value of the rotating shaft of the actual water-spraying motor through strain torque.
10. A mobile air conditioner motor control system that beats water, be applicable to a mobile air conditioner motor control method that beats water of any one of claims 1-9, characterized by comprising: sensing module for collecting current, moment and water level data The controller analyzes the data transmitted by the sensing module and generates a hierarchical cooperative control strategy; And the execution module is used for executing specific instruction operation according to the hierarchical cooperative control strategy.

Description

Control method and system for water-fetching motor of mobile air conditioner Technical Field The invention relates to the technical field of air conditioners, in particular to a method and a system for controlling a water-fetching motor of a mobile air conditioner. Background At present, in the running process of a mobile air conditioner, a common accumulated water treatment method has some defects. For example, conventional mobile air conditioners control a water-pumping motor through a fixed rotational speed or a single water level threshold, resulting in waste of energy (splash) at low water levels, and insufficient evaporation at high water levels to cause full water shut-down. The condensate water consumption efficiency is affected by the environmental humidity, and the temperature of the water throwing side is insufficient due to the design of the countercurrent refrigerant in the high-humidity environment, so that the risk of water fullness is increased. The invention discloses a control method of a water-taking motor of a mobile air conditioner, which is disclosed in China patent with publication number CN104566853A, and the control method of the water-taking motor of the mobile air conditioner can not operate the water-taking motor in a dry environment so as to save energy, can improve the rotating speed of the water-taking motor in a wet environment and accelerate the discharge of condensed water. But it still has a problem of insufficient water-drawing efficiency. Disclosure of Invention The invention solves the problem of low water pumping efficiency of the existing air conditioner, and provides a control method and a control system for a water pumping motor of a mobile air conditioner, which feed back the water resistance change in real time through moment difference, have low response delay and remarkably improve the water pumping efficiency. In order to achieve the purpose, the invention adopts the following technical scheme that the control method of the water pumping motor of the mobile air conditioner comprises the following steps: S1, checking initialization parameters, collecting current, moment and water level data, and calculating moment difference and current variation; S2, the controller receives the collected and calculated data, and analyzes the data to generate a hierarchical cooperative control strategy; s3, the execution module receives the controller electrical signal to respond and execute a key motor rotating speed adjustment instruction; and S4, updating the moment difference and the water level state every set time, and switching modes according to different conditions. The invention provides a high-efficiency and accurate water-fetching motor control method, which can remarkably relieve the technical problem of low water-fetching efficiency of an air conditioner in the prior art. And the dynamic balance is precisely controlled, the water resistance change is fed back in real time through the moment difference, the response delay is controlled at millisecond level, and the water pumping efficiency is doubled. The multistage water level sensor realizes hierarchical control and solves the problem of misjudgment of water fullness of a traditional single threshold value. The invention is still further arranged that the step S1 comprises: S11, after the refrigerating system unit is started and runs stably, checking initialization parameters according to the environmental working condition and the unit state; And S12, collecting current, moment and water level data in real time, calculating to obtain a current variation by combining an initial current calibration value, obtaining the impeller water resistance moment by combining a modified formula, and then obtaining a moment difference value. According to the technical scheme, the sensor module is firstly subjected to initialization check, then the data stream is collected in real time, and the current variation and the moment difference value are calculated after the data stream is collected. The invention is further provided that the current variation is the difference between the real-time working current value and the initial current calibration value, the moment difference is the difference between the driving moment M m of the water-beating motor and the impeller water resistance moment M w, and the impeller water resistance moment M w is obtained through the current variation and according to a correction formula. In the technical scheme, the current detection unit detects a real-time current value and obtains a corresponding current variation through difference between the current detection unit and an initial current calibration value. The invention is further arranged that the hierarchical cooperative control strategy adjusts according to the water level state and comprises the following steps: S21, judging whether the water level is in a low water level area, if so, standing the motor, and if not, entering S22; s22, j