CN103644623A - Method for determining air conditioner filter screen cleanliness through pulse generation (PG) conduction angle - Google Patents
Method for determining air conditioner filter screen cleanliness through pulse generation (PG) conduction angle Download PDFInfo
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- CN103644623A CN103644623A CN201310611592.6A CN201310611592A CN103644623A CN 103644623 A CN103644623 A CN 103644623A CN 201310611592 A CN201310611592 A CN 201310611592A CN 103644623 A CN103644623 A CN 103644623A
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- filter screen
- conduction angle
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Abstract
The invention relates to an air conditioner, aims at the problems of high filter screen detection cleanliness costs and inaccurate detection results in the prior art and provides a method for determining the air conditioner filter screen cleanliness through a PG conduction angle. The method comprises that a system feeds the motor rotation speed back to a control module in real time; the control module calculates the PG motor real-time conduction angle according to the motor rotation speed fed back in real time; the control module compares the real-time conduction angle of the PG motor with a pre-stored standard conduction angle of the PG motor, and the comparison value is recorded as delta omega; the system compares delta omega with a pre-stored filter screen dirty upper limit value omega 1, and the system sends a filter screen dirty hint when delta omega is larger than omega 1. According to the method, whether the motor filter screen is clean is determined by calculation the comparison value of the real-time conduction angle and the standard conduction angle, and accordingly, the accuracy of detection of the filter screen cleanliness is improved. The method is applicable to an air conditioner of the PG motor.
Description
Technical field
The present invention relates to air-conditioning, particularly adopt the air-conditioning of PG motor.
Background technology
Air-conditioning adopts PG(pulse generation pulse generation mostly at present) motor, both at home and abroad when judgement air-conditioning filter net cleanliness factor, the feature that after general employing filter screen dirtying, light dies down, carry out light and detect to judge, or after filter screen dirtying, cause the variation of electric current to judge that whether screen pack is dirty, first method is not considered the condition at daytime and night, detected result is inaccurate, second method need to increase current inductor, and cost is high, cannot effectively implement.
Summary of the invention
Technical problem to be solved by this invention, high for detecting cleanliness of filter screen cost in prior art exactly, the incorrect problem of testing result, provides the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor, to reach the effect that improves Detection accuracy.
The present invention solve the technical problem, and the technical scheme of employing is, utilizes the method for PG motor angle of flow judgement air-conditioning filter net cleanliness factor, comprises the following steps:
Step 1, system arrives control module by motor speed Real-time Feedback;
Step 2, control module calculate PG motor real-time conduction angle according to the motor speed of Real-time Feedback, count ω;
Step 3, control module are to the real-time conduction angle ω of PG motor and pre-stored PG motor standard angle of flow ω
0compare, fiducial value is counted △ ω;
Step 4, system are incited somebody to action | △ ω | and the higher limit ω dirty with pre-stored screen pack
1compare, will | △ ω | > ω
1time, system is sent the dirty prompting of screen pack.
Concrete, in described step 1, system, by PG motor rotate speed feedback circuit is connected with control module, arrives control module by motor speed Real-time Feedback.
Concrete, in described step 1, control module is microprocessor (hereinafter to be referred as MCU).
Concrete, in described step 4, system is according to the difference of wind speed, pre-stored PG motor standard angle of flow ω
0numerical value also different.
Concrete, in described step 4, system is sent dirty the prompting for by LED lamp, charactron and/or display screen of screen pack and is pointed out to user.
The invention has the beneficial effects as follows, by calculating, compare the real-time conduction angle of PG motor and the value of the standard angle of flow, with this, judge that whether motor screen pack is clean, improves thereby reach the effect that detects cleanliness of filter screen accuracy rate, and the invention process method is simple, reliable.
Accompanying drawing explanation
Fig. 1 is that the present invention utilizes PC motor internal circuit structure diagram in the embodiment of the method for PG motor angle of flow judgement air-conditioning filter net cleanliness factor.
The specific embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail:
The present invention is directed to that in prior art, to detect cleanliness of filter screen cost high, the incorrect problem of testing result, provides the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor, first system by motor speed Real-time Feedback to control module; Then, control module calculates PG motor real-time conduction angle according to the motor speed of Real-time Feedback; Secondly, control module compares the real-time conduction angle of PG motor and the pre-stored PG motor standard angle of flow, and fiducial value is counted △ ω; Finally, system is incited somebody to action | △ ω | and the higher limit ω dirty with pre-stored screen pack
1compare, will | △ ω | > ω
1time, system is sent the dirty prompting of screen pack.By calculating, compare the real-time conduction angle of PG motor and the value of the standard angle of flow, with this, judge that whether motor screen pack is clean, thereby reach, improve the effect that detects cleanliness of filter screen accuracy rate, and the invention process method is simple, reliable.
Embodiment
In this example, as shown in Figure 1, in PG motor, PG circuit for controlling motor is connected with MCU, and PG motor rotate speed feedback circuit is connected with MCU, and zero crossing circuitry is connected with MCU.During PG machine operation, the zero crossing circuitry input signal time is counted T0, and PG motor control signal ON time is counted T1, and when PG motor real-time rotate speed is greater than rotating speed of target, T1 increases, and signal poor △ T=T1-T0 input time increases.When PG motor real-time rotate speed is less than rotating speed of target, T1 reduces, and signal poor △ T=T1-T0 input time reduces.Now, △ T is equivalent to real-time conduction angle ω, ω=△ T arranges standard signal poor △ t input time under normal condition in MCU, and △ t can be equivalent to the standard angle of flow numerical value ω under PG motor normal condition
0, i.e. ω
0=△ t is when wind speed is different, and it's input time tos the angle of flow numerical value ω of △ t equivalence this standard signal
0also different.| ω-ω
0the value of |=| △ T-△ t| departs from 0 size, has showed the degree of filter screen dirtying.In MCU, the ceiling value t of built-in standard deviation is equivalent to the dirty higher limit ω of pre-stored screen pack
1, i.e. ω
1=t, | during △ T-△ t|>t, | ω-ω
0| > ω
1time, show that the degree of filter screen dirtying has reached certain value, filter screen dirtying sign is set, and shows.And apply LED lamp, charactron or display screen and carry out the modes such as word demonstration and demonstrate the dirty state of air-conditioning filter net.
Claims (5)
1. the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor, is characterized in that, comprises the following steps:
Step 1, system arrives control module by motor speed Real-time Feedback;
Step 2, control module calculate PG motor real-time conduction angle according to the motor speed of Real-time Feedback, count ω;
Step 3, control module are to the real-time conduction angle ω of PG motor and pre-stored PG motor standard angle of flow ω
0compare, fiducial value is counted △ ω;
Step 4, system are incited somebody to action | △ ω | and the higher limit ω dirty with pre-stored screen pack
1compare, will | △ ω | > ω
1time, system is sent the dirty prompting of screen pack.
2. the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor according to claim 1, it is characterized in that, in described step 1, system, by PG motor rotate speed feedback circuit is connected with control module, arrives control module by motor speed Real-time Feedback.
3. the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor according to claim 1, is characterized in that, in described step 1, control module is microprocessor.
4. the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor according to claim 1, is characterized in that, in described step 2, system is according to the difference of wind speed, pre-stored PG motor standard angle of flow ω
0numerical value also different.
5. the method for utilizing PG motor angle of flow judgement air-conditioning filter net cleanliness factor according to claim 1, is characterized in that in described step 4, and system is sent dirty the prompting for by LED lamp, charactron and/or display screen of screen pack and pointed out to user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611592.6A CN103644623B (en) | 2013-11-27 | 2013-11-27 | The PG motor angle of flow is utilized to judge the method for air-conditioning filter net cleanliness factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611592.6A CN103644623B (en) | 2013-11-27 | 2013-11-27 | The PG motor angle of flow is utilized to judge the method for air-conditioning filter net cleanliness factor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103644623A true CN103644623A (en) | 2014-03-19 |
| CN103644623B CN103644623B (en) | 2016-03-02 |
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|---|---|---|---|
| CN201310611592.6A Active CN103644623B (en) | 2013-11-27 | 2013-11-27 | The PG motor angle of flow is utilized to judge the method for air-conditioning filter net cleanliness factor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913446A (en) * | 2015-05-29 | 2015-09-16 | 广东美的制冷设备有限公司 | Filth blockage detection method and device for air conditioner |
| CN106440208A (en) * | 2016-09-28 | 2017-02-22 | 青岛海信日立空调系统有限公司 | Draught fan PG motor control method, draught fan and air conditioner |
| CN108413559A (en) * | 2018-02-28 | 2018-08-17 | 珠海格力电器股份有限公司 | Air outlet device and its filter screen dirtying block up detection method, device, storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5810908A (en) * | 1997-05-02 | 1998-09-22 | Bemis Manufacturing Company | Electronic control for air filtering apparatus |
| CN101318092A (en) * | 2008-04-10 | 2008-12-10 | 上海威乐汽车空调器有限公司 | Method for detecting filter stoppage of automobile air conditioner |
| KR20100005501A (en) * | 2008-07-07 | 2010-01-15 | 웅진코웨이주식회사 | System and method for judging the noninstalling of humidification filter of natural humidification air cleaner |
| CN101718461A (en) * | 2009-11-27 | 2010-06-02 | 四川长虹空调有限公司 | Method for controlling air conditioner |
-
2013
- 2013-11-27 CN CN201310611592.6A patent/CN103644623B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5810908A (en) * | 1997-05-02 | 1998-09-22 | Bemis Manufacturing Company | Electronic control for air filtering apparatus |
| CN101318092A (en) * | 2008-04-10 | 2008-12-10 | 上海威乐汽车空调器有限公司 | Method for detecting filter stoppage of automobile air conditioner |
| KR20100005501A (en) * | 2008-07-07 | 2010-01-15 | 웅진코웨이주식회사 | System and method for judging the noninstalling of humidification filter of natural humidification air cleaner |
| CN101718461A (en) * | 2009-11-27 | 2010-06-02 | 四川长虹空调有限公司 | Method for controlling air conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913446A (en) * | 2015-05-29 | 2015-09-16 | 广东美的制冷设备有限公司 | Filth blockage detection method and device for air conditioner |
| CN104913446B (en) * | 2015-05-29 | 2017-07-07 | 广东美的制冷设备有限公司 | The dirty stifled detection method of air-conditioner and device |
| CN106440208A (en) * | 2016-09-28 | 2017-02-22 | 青岛海信日立空调系统有限公司 | Draught fan PG motor control method, draught fan and air conditioner |
| CN108413559A (en) * | 2018-02-28 | 2018-08-17 | 珠海格力电器股份有限公司 | Air outlet device and its filter screen dirtying block up detection method, device, storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103644623B (en) | 2016-03-02 |
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