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Air conditioner filter screen filth blockage judgment method and device and air conditioner

A judging method and technology of judging device, applied in the direction of mechanical equipment, etc., can solve the problem of inability to judge that the filter is dirty and blocked, and achieve the effects of improving experience, accurate detection, and reducing production costs.

Active Publication Date: 2018-12-18
NINGBO AUX ELECTRIC
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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 a method for judging the dirty and clogged air conditioner filter to solve the problem that the current air conditioner cannot timely judge the dirty and clogged filter according to the actual use environment and give a reminder

Method used

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  • Air conditioner filter screen filth blockage judgment method and device and air conditioner
  • Air conditioner filter screen filth blockage judgment method and device and air conditioner
  • Air conditioner filter screen filth blockage judgment method and device and air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0048] The invention provides a method for judging the dirty and clogged filter screen of an air conditioner, which combines figure 1 shown, including:

[0049] Under the normal operation state of the internal fan, detect the actual speed of the internal fan mentioned in the current wind gear;

[0050] Use the PID proportional integral differential control method to adjust the actual speed of the current wind gear to the standard fan speed of the same wind gear;

[0051] After the internal fan reaches the standard fan speed, obtain the current PWM pulse width conduction percentage e%;

[0052] Comparing the current PWM pulse width conduction percentage e% with the preset PWM pulse width conduction percentage d% in the same wind gear position dirty blockage state;

[0053] If e%≤d%, it is judged that the current filter is in a state of dirty blockage, and the control operation of the state of dirty blockage is performed;

[0054] If e%>d%, it is judged that the current filte...

Embodiment 2

[0057] As described above, the method for judging dirty and clogged air conditioner filters differs from this embodiment in that, on the basis of Embodiment 1, the method for judging dirty and clogged air conditioner filters specifically includes the following steps:

[0058]Step S1: In the test state, simulate the working condition of the dirty and clogged filter, and obtain the dirty and clogged state of the internal fan when the wind gear is running in the corresponding wind gear through the PWM control module when the wind gear is in the high, medium and low gears respectively PWM pulse width conduction percentage d%;

[0059] Step S2: storing the PWM pulse width conduction percentage d% in the dirty blocking state measured in step S1 into a storage module;

[0060] Step S3: In the normal operation state of the internal fan, the speed detection module detects the actual speed of the internal fan in the current wind gear;

[0061] Step S4: According to the detection result...

Embodiment 3

[0076] As mentioned above, the difference of this embodiment is that the wind gears of the internal fan include high gear, middle gear and low gear, and the time when the filter screen is dirty and clogged is obtained respectively through the PWM control module. The PWM pulse width conduction percentage d% in the dirty blocking state of the internal fan when the current wind gear is running, the PWM pulse width conduction percentage d1% in the dirty blocking state of the high-grade position, and the dirty blocking state in the middle gear The PWM pulse width conduction percentage d2%, the PWM pulse width conduction percentage d3% in the low-gear dirty blockage state; and the PWM pulse when the filter screen is clean and the internal fan is running in the wind gear position is obtained through the PWM control module. Wide conduction percentage c%, the PWM pulse width conduction percentage c1% of the high-grade position in the clean state of the filter screen, the PWM pulse width...

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Abstract

The invention provides an air conditioner filter screen filth blockage judgment method and device and an air conditioner. The air conditioner filter screen filth blockage judgment method comprises thesteps of adjusting the air damper gear actual speed into the standard fan speed by using a proportion integration differentiation (PID) algorithm through a PID control module; after an inner fan reaches the standard fan speed, acquiring current pulse-width modulation (PWM) pulse width conduction percentage e percent; comparing the current PWM pulse width conduction percentage e percent with preset PWM pulse width conduction percentage d percent under the air damper gear filth blockage state; if the e percent is less than or equal to the d percent, judging that a current filter screen is at the filth blockage state, and carrying out the control operation of the filth blockage state; and if the e percent is larger than the d percent, judging that the current filter screen is at the normal state, and carrying out the control operation of the normal state, wherein the air damper gear is one of a high gear, a middle gear and a low gear. According to the air conditioner filter screen filthblockage judgment method provided by the invention, the filter screen filth blockage situation can be judged in real time according to the actual use environment, and a warning is sent to a user in time.

Description

technical field [0001] The invention relates to the field of air conditioner control, in particular to a method and device for judging dirty and clogged filter screens of an air conditioner and an air conditioner. Background technique [0002] At present, the air conditioner mainly judges whether the filter screen is dirty and clogged based on the accumulated running time. After the accumulated running time reaches a preset value, the user is reminded to clean the air conditioner filter screen. [0003] However, this filter cleaning reminder function cannot automatically adjust the time to remind the user to clean the filter according to the change of the use environment, according to the dirty and clogged condition of the filter; The customer cleans; or the use environment is bad, the filter needs to be cleaned, but it cannot be reminded in time. Contents of the invention [0004] In view of this, the present invention aims to propose a method for judging dirty and clogg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/39F24F11/54F24F11/61F24F11/63F24F11/89
CPCF24F11/39F24F11/54F24F11/61F24F11/63F24F11/89
Inventor 黄绍敏李发顺
Owner NINGBO AUX ELECTRIC
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