CN108547799A - Self cleaning method and air regulator for air-supply arrangement - Google Patents
Self cleaning method and air regulator for air-supply arrangement Download PDFInfo
- Publication number
- CN108547799A CN108547799A CN201810220236.4A CN201810220236A CN108547799A CN 108547799 A CN108547799 A CN 108547799A CN 201810220236 A CN201810220236 A CN 201810220236A CN 108547799 A CN108547799 A CN 108547799A
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- China
- Prior art keywords
- impeller
- air
- motor
- cleaning method
- self cleaning
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Cleaning In General (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of self cleaning methods for air-supply arrangement.Air-supply arrangement includes impeller and the motor for driving wheel rotation, wherein self cleaning method includes judging whether impeller needs to clean, if, high-frequency pulse signal then is inputted to the voltage input end of motor in a preset time, the output shaft of motor rotates around it axis vibration and impeller vibration.The present invention to the voltage input end of motor by inputting high-frequency pulse signal, the output shaft of motor is set to rotate around it axis vibration, and impeller is vibrated, the dust of impeller surface can be shaken and be fallen, not be added to the technical barrier that the local impeller for solving air-supply arrangement in the prior art is unable to automated cleaning.
Description
Technical field
The present invention relates to filed of air conditioning, more particularly to a kind of self cleaning method for air-supply arrangement and with this
The air regulator of air-supply arrangement.
Background technology
For air-supply arrangement after long-term operating, impeller surface can gather a large amount of dusts, can not only reduce the matter of blowout air-flow
Amount, also increases load and the energy consumption of motor.Especially when air-supply arrangement is used for air regulator, impeller surface accumulation is big
Amount dust can also influence the air output of air-supply arrangement, reduce the cooling and warming efficiency of air regulator, waste indoor heat exchanger production
Raw heat or cold makes the energy consumption of entire air regulator increase, reduces user experience.Consider, needs in design
Want a kind of self cleaning method can be used for air-supply arrangement and the air regulator with the air-supply arrangement.
Invention content
One purpose of first aspect present invention is to provide for a kind of self cleaning method for air-supply arrangement.
One purpose of second aspect of the present invention is to provide for a kind of air regulator.
Particularly, according to the first aspect of the invention, a kind of self cleaning method for air-supply arrangement is provided, it is described to send
Wind apparatus includes impeller and the motor for driving the wheel rotation, it is characterised in that the self cleaning method includes：
Judge whether the impeller needs to clean；
If so, inputting high-frequency pulse signal, the electricity to the voltage input end of the motor in a preset time
The output shaft of motivation rotates around it axis and vibrates and drive the bladed disk vibration.
Optionally, judge that the step of whether impeller needs cleaning includes：
In the case where the impeller is in normal operating conditions, the real-time current peak value of the motor is obtained；
Judge whether the real-time current peak value is more than a predetermined current threshold；
If so, determining that the impeller needs to clean.
Optionally, the high-frequency pulse signal is square-wave signal.
Optionally, the frequency of the square-wave signal is 2kHz~100kHz.
Optionally, the preset time is 40s~80s.
Optionally, the direction of vibration of the impeller is opposite with the rotation direction that the impeller is under normal operating conditions.
Optionally, the motor is dc motor.
Optionally, the high-frequency pulse signal is the square-wave signal of zero crossing saltus step；And
The voltage of motor when the polarity of the original levels of the square-wave signal is in normal operating conditions with the impeller
The polarity of the voltage of input terminal is opposite.
Optionally, the self cleaning method further includes：
When determining that the impeller needs cleaning, it is clear to judge whether impeller continuously is determined needing in preset times
It is clean；
If so, it is abnormal to send out air-supply arrangement described in vision and/or audible signal prompting user；
If it is not, inputting high-frequency pulse signal to the voltage input end of the motor in the preset time.
According to the second aspect of the invention, a kind of air regulator is provided, including：
Casing offers shell air inlet and shell air outlet；
Air-supply arrangement has impeller and the motor for driving the wheel rotation, is set in the casing, and institute
Impeller is stated to be configured to suck surrounding air from the ambient enviroment of the shell air inlet and promote it to the shell air outlet stream
It is dynamic；And
Indoor heat exchanger is set to the air intake road between the shell air inlet and the impeller, so that via institute
The surrounding air and the indoor heat exchanger for stating shell air inlet entrance carry out heat exchange；It is characterized in that,
The air-supply arrangement is configured to carry out automatically cleaning according to aforementioned any self cleaning method.
The present invention makes the output shaft of motor around its turn by inputting high-frequency pulse signal to the voltage input end of motor
Moving axis linearly coupled, and impeller is vibrated, you can the dust of impeller surface is shaken and is fallen, is not added to and locally solves the prior art
The impeller of middle air-supply arrangement is unable to the technical barrier of automated cleaning.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic flow chart of the self cleaning method according to an embodiment of the invention for air-supply arrangement；
Fig. 2 is the detail flowchart of the self cleaning method according to an embodiment of the invention for air-supply arrangement；
Fig. 3 is the schematic diagram of air regulator according to an embodiment of the invention.
Specific implementation mode
Fig. 1 is the schematic flow chart of the self cleaning method according to an embodiment of the invention for air-supply arrangement 100.
Air-supply arrangement 100 includes impeller 110, the motor 120 for driving impeller 110 to rotate and works for controlling motor 120
Microprocessor 130.As shown in Figure 1, the self cleaning method at least includes the following steps：
Step A：Judge whether impeller 110 needs to clean.
If so, operating procedure B：High-frequency pulse signal then is inputted to the voltage input end of motor 120, motor 120
Output shaft rotates around it axis vibration and impeller 110 is vibrated.
If it is not, operating procedure A.
Technical solution provided in an embodiment of the present invention, by inputting high-frequency impulse letter to the voltage input end of motor 120
Number, so that the output shaft of motor 120 is rotated around it axis vibration, and impeller 110 is vibrated, you can by 110 surface of impeller
Dust, which shakes, to be fallen, and under the premise of not increasing cost, the impeller 110 for solving air-supply arrangement 100 in the prior art cannot be automatically clear
Clean technical barrier.
In some preferred embodiments, the high-frequency pulse signal in step B can be square-wave signal, so that motor 120
The vibration of output shaft and impeller 110 is more stablized.The frequency of square-wave signal is preferably 2kHz~100kHz.Impeller 110 is in the section
Vibrated under the driving of the square-wave signal of frequency range, can get preferable cleaning effect, avoid because vibration frequency is too low can not
The dust on 110 surface of impeller is shaken and is fallen, motor 120 and/or impeller 110 damage caused by vibration frequency is excessively high.Further,
When the direction of vibration of impeller 110 is preferably in normal operating conditions with impeller 110 (when impeller 110 is used for delivery air)
Rotation direction is on the contrary, to improve the oscillation intensity of impeller 110, and then the automatically cleaning effect of raising impeller 110.When motor 120
For dc motor when, high-frequency pulse signal can be the square-wave signal of zero crossing saltus step, and the polarity and impeller of its original levels
110 be in normal operating conditions when motor 120 voltage input end polarity of voltage on the contrary, so that the vibration side of impeller 110
It is opposite to rotation direction when being in normal operating conditions with impeller 110.Under normal conditions, impeller 110 is in normal work shape
The polarity of voltage of the voltage input end of motor 120 is " just " when state, and impeller 110 rotates forward, then the pole of square-wave signal original levels
Property should be " negative ", make impeller 110 invert.The run time of step B can be 40s~80s, such as 40s, 60s or 80s.
Fig. 2 is the detail flowchart of the self cleaning method according to an embodiment of the invention for air-supply arrangement 100.Ginseng
See Fig. 2, describes in detail below to the self cleaning method of the present invention.
In step, directly proportional feature can be loaded to it according to the current peak of motor, is in using impeller 110
When normal operating conditions, the real-time current peak value of motor 120 judges whether impeller 110 needs to clean.Specifically, step A
It may include：
Step A1：When impeller 110 is in normal operating conditions, the real-time current peak value of motor 120 is obtained.
Step A2：Judge whether the real-time current peak value of motor 120 is more than a predetermined current threshold.
If so, operating procedure A3：Determine that impeller 110 needs to clean.
If it is not, operating procedure A4：Determine that impeller 110 need not clean.
In step A2, the current peak setting of motor when predetermined current threshold can dispatch from the factory according to air-supply arrangement, such as
Predetermined current threshold be air-supply arrangement dispatch from the factory when motor current peak 103%~108%, such as 103%, 105% or
108%.
In some embodiments, microprocessor 130 can be configured to after executing completion step B, executes step A again and judges
Whether impeller 110, which also needs to, is cleaned.In some preferred embodiments, when continuously perform preset times step B to impeller 110 carry out
After cleaning, step A still judges that impeller 110 needs to clean, and air-supply arrangement 100 can send out vision and/or audible signal reminds user
Air-supply arrangement 100 is abnormal, needs artificial treatment.Abnormal factors may include entering in air-supply arrangement 100 foreign matter, air inlet and/or
Air outlet is blocked, having article to take, to be placed on air-supply arrangement 100 first-class.
Specifically, determine impeller 110 need clean (step A3) and to the voltage input end of motor 120 input high frequency
Between pulse signal (step B), it may also include the steps of：
Step C：The judging result of recording step A, and whether judgment step A continuously determines impeller in preset times
110 need to clean.Preset times can be 3~5 times, such as 3 times, 4 times or 5 times.
If so, operating procedure D：It sends out vision and/or audible signal reminds air-supply arrangement 100 described in user abnormal.And it is clear
Except the judging result of all step A of record.
If it is not, operating procedure B, vibration cleaning is carried out to impeller 110.
In some further preferred embodiments, when step A judges that impeller 110 needs cleaning, microprocessor 130 is preferred
It is configured to input high-frequency pulse signal to the voltage input end of motor 120 immediately, impeller 110 is made to start to vibrate automatically cleaning, with
Improve 110 self-cleaning efficiency of impeller.In this embodiment, step C can be to judge whether continuously in preset times, per phase
Whether the time interval between adjacent operating procedure B twice is 0.In some alternate embodiments, microprocessor 130 can also match
It is set to after step B is completed in previous execution, at least certain interval of time inputs high frequency arteries and veins to the voltage input end of motor 120 again
Rush signal.
A kind of sky can also be provided in the self cleaning method for air-supply arrangement 100 based on aforementioned any embodiment, the present invention
Gas adjuster 200.Fig. 3 is the schematic diagram of air regulator 200 according to an embodiment of the invention.It is empty referring to Fig. 3
Gas adjuster 200 may include the casing 210 for offering 210 air outlet of 210 air inlet of casing and casing, and be set to casing
Air-supply arrangement 100 in 210 and indoor heat exchanger 220.Specifically, air-supply arrangement 100 has impeller 110, for driving impeller
The motor 120 of 110 rotations and the microprocessor 130 for controlling the work of motor 120.Impeller 110 is configured to from casing 210
The ambient enviroment sucking surrounding air of air inlet simultaneously promotes it to be flowed to 210 air outlet of casing.Indoor heat exchanger 220 is set to machine
Air intake road between 210 air inlet of shell and impeller 110, so that the surrounding air via the entrance of 210 air inlet of casing and room
Interior heat exchanger 220 carries out heat exchange.
Particularly, when impeller 110 is in normal operating conditions, microprocessor 130 can be configured to obtain motor 120
Real-time current peak value, and current peak is compared with predetermined current threshold.If current peak is more than predetermined current threshold, micro-
Processor 130 continues to input high frequency arteries and veins to the voltage input end of motor 120 immediately and in a preset time (40s~80s)
Signal is rushed, makes that the output shaft of motor 120 rotates around it axis vibration and impeller 110 is vibrated together, and then by impeller 110
The dust on surface, which shakes, to be fallen.
In some preferred embodiments, microprocessor 130 can be further configured judges whether impeller 110 needs every time for record
Clean judging result is wanted, and is configured to after determining that impeller 110 needs to clean, judges whether that continuous preset times determine
Impeller 110 needs to clean.Judge impeller 110 whether due to abnormal factors can not automatically cleaning it is clean, need artificial treatment.
Air regulator 200 may also include information exchange unit 230.When continuously to the progress preset times cleaning of impeller 110
Afterwards, still judge that impeller 110 needs to clean, microprocessor 130 can be configured to send electric signal to information exchange unit 230, make letter
It ceases interactive unit 230 and sends vision and/or audible signal to user, prompt user's air-supply arrangement 100 abnormal.Information exchange unit
230 may include the display area being arranged on the front panel of casing 210, can be carried by showing designated symbols in display area
User's air-supply arrangement 100 of waking up is abnormal.Information exchange unit 230 may also include buzzer, can be reminded by making buzzer sounding
User's air-supply arrangement 100 is abnormal.
Understandably, because of the circuit connection in air regulator 200, air-supply arrangement 100 is usual by those skilled in the art
Impeller 110 is driven to rotate using dc motor.But the self cleaning method of the present invention can also apply in ac motor or
On other types of motor.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of self cleaning method for air-supply arrangement, the air-supply arrangement includes impeller and for driving the wheel rotation
Motor, it is characterised in that the self cleaning method includes：
Judge whether the impeller needs to clean；
If so, inputting high-frequency pulse signal, the motor to the voltage input end of the motor in a preset time
Output shaft rotate around it axis and vibrate and drive the bladed disk vibration.
2. self cleaning method according to claim 1, it is characterised in that the step of whether impeller needs cleaning judged
Including：
In the case where the impeller is in normal operating conditions, the real-time current peak value of the motor is obtained；
Judge whether the real-time current peak value is more than a predetermined current threshold；
If so, determining that the impeller needs to clean.
3. self cleaning method according to claim 1, which is characterized in that
The high-frequency pulse signal is square-wave signal.
4. self cleaning method according to claim 3, which is characterized in that
The frequency of the square-wave signal is 2kHz~100kHz.
5. self cleaning method according to claim 4, which is characterized in that
The preset time is 40s~80s.
6. self cleaning method according to claim 1, which is characterized in that
The direction of vibration of the impeller is opposite with the rotation direction that the impeller is under normal operating conditions.
7. self cleaning method according to claim 6, which is characterized in that
The motor is dc motor.
8. self cleaning method according to claim 7, which is characterized in that
The high-frequency pulse signal is the square-wave signal of zero crossing saltus step；And
The control source of motor when the polarity of the original levels of the square-wave signal is in normal operating conditions with the impeller
The polarity of the voltage at end is opposite.
9. self cleaning method according to claim 1, it is characterised in that further include：
When determining that the impeller needs cleaning, judge whether impeller continuously is determined needing to clean in preset times；
If so, it is abnormal to send out air-supply arrangement described in vision and/or audible signal prompting user；
If it is not, inputting high-frequency pulse signal to the voltage input end of the motor in the preset time.
10. a kind of air regulator, including：
Casing offers shell air inlet and shell air outlet；
Air-supply arrangement has impeller and the motor for driving the wheel rotation, is set in the casing, and the leaf
Wheel is configured to suck surrounding air from the ambient enviroment of the shell air inlet and it is promoted to be flowed to the shell air outlet；With
And
Indoor heat exchanger is set to the air intake road between the shell air inlet and the impeller, so that via the machine
The surrounding air that shell air inlet enters carries out heat exchange with the indoor heat exchanger；It is characterized in that,
The air-supply arrangement is configured to the self cleaning method according to any one of claim 1-9 and carries out automatically cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220236.4A CN108547799A (en) | 2018-03-16 | 2018-03-16 | Self cleaning method and air regulator for air-supply arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220236.4A CN108547799A (en) | 2018-03-16 | 2018-03-16 | Self cleaning method and air regulator for air-supply arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108547799A true CN108547799A (en) | 2018-09-18 |
Family
ID=63516657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220236.4A Pending CN108547799A (en) | 2018-03-16 | 2018-03-16 | Self cleaning method and air regulator for air-supply arrangement |
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| Country | Link |
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| CN (1) | CN108547799A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197054A (en) * | 2020-09-28 | 2021-01-08 | 东风商用车有限公司 | Valve self-cleaning control method with position feedback |
| CN115429983A (en) * | 2022-09-09 | 2022-12-06 | 珠海格力电器股份有限公司 | Atomizer self-cleaning control method and device, equipment and atomizer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519118A (en) * | 2011-12-29 | 2012-06-27 | Tcl空调器(中山)有限公司 | Method and device for automatic reminding of cleanness of air conditioner |
| CN105889109A (en) * | 2015-02-13 | 2016-08-24 | 台达电子工业股份有限公司 | System And Method For Controlling Forward/Reverse Rotation Of Fan |
| CN107165871A (en) * | 2017-06-30 | 2017-09-15 | 广东美的环境电器制造有限公司 | Bladeless fan and its dedusting control method and device |
| CN107614882A (en) * | 2015-05-20 | 2018-01-19 | 菲舍尔和佩克尔应用有限公司 | Fan or pump arrangement and operating method |
| JP2018017680A (en) * | 2016-07-29 | 2018-02-01 | パナソニックＩｐマネジメント株式会社 | Air cleaning device |
| CN107702283A (en) * | 2017-09-28 | 2018-02-16 | 青岛海尔空调电子有限公司 | Air conditioner automatically cleaning control method |
-
2018
- 2018-03-16 CN CN201810220236.4A patent/CN108547799A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519118A (en) * | 2011-12-29 | 2012-06-27 | Tcl空调器(中山)有限公司 | Method and device for automatic reminding of cleanness of air conditioner |
| CN105889109A (en) * | 2015-02-13 | 2016-08-24 | 台达电子工业股份有限公司 | System And Method For Controlling Forward/Reverse Rotation Of Fan |
| CN107614882A (en) * | 2015-05-20 | 2018-01-19 | 菲舍尔和佩克尔应用有限公司 | Fan or pump arrangement and operating method |
| JP2018017680A (en) * | 2016-07-29 | 2018-02-01 | パナソニックＩｐマネジメント株式会社 | Air cleaning device |
| CN107165871A (en) * | 2017-06-30 | 2017-09-15 | 广东美的环境电器制造有限公司 | Bladeless fan and its dedusting control method and device |
| CN107702283A (en) * | 2017-09-28 | 2018-02-16 | 青岛海尔空调电子有限公司 | Air conditioner automatically cleaning control method |
Non-Patent Citations (1)
| Title |
|---|
| 隋修武: "《机械电子工程原理与系统设计 》", 31 January 2014, 国防工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197054A (en) * | 2020-09-28 | 2021-01-08 | 东风商用车有限公司 | Valve self-cleaning control method with position feedback |
| CN112197054B (en) * | 2020-09-28 | 2022-07-05 | 东风商用车有限公司 | Valve self-cleaning control method with position feedback |
| CN115429983A (en) * | 2022-09-09 | 2022-12-06 | 珠海格力电器股份有限公司 | Atomizer self-cleaning control method and device, equipment and atomizer |
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