CN110887162B - Air conditioner control method and device and air conditioner system - Google Patents
Air conditioner control method and device and air conditioner system Download PDFInfo
- Publication number
- CN110887162B CN110887162B CN201911109955.XA CN201911109955A CN110887162B CN 110887162 B CN110887162 B CN 110887162B CN 201911109955 A CN201911109955 A CN 201911109955A CN 110887162 B CN110887162 B CN 110887162B
- Authority
- CN
- China
- Prior art keywords
- noise
- ion
- air conditioner
- ion generator
- working voltage
- Prior art date
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007664 blowing Methods 0.000 claims abstract description 42
- 238000004378 air conditioning Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 abstract description 9
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method and a control device of an air conditioner and an air conditioning system, wherein the air conditioner also comprises an ion generator, and the control method of the air conditioner comprises the following steps of S1: acquiring blowing noise at an air outlet and ion noise of an ion generator in real time; control step S2: the working voltage value of the ion generator is controlled by comparing the blowing noise and the ion noise. According to the control method, the noise value is detected and compared in real time, and then the working voltage of the ion generator is dynamically adjusted along with the wind speed, so that the optimal sterilization and energy-saving effects are obtained, the noise of an air conditioning system is reduced, and the user experience is greatly improved; in the adjustment process of the ion generator, the adjustment amount of the working voltage can meet the requirement of ensuring the optimal sterilization effect while reducing noise.
Description
Technical Field
The present disclosure relates to home appliances, and particularly to a method and an apparatus for controlling an air conditioner and an air conditioning system.
Background
When the existing air conditioner is used, a room needs to be sealed, and air cannot circulate, so that the quality of the air is poor. Generally, set up ion generator in the air conditioner, ion generator sets up at the evaporimeter back, and the operating voltage who improves ion generator is favorable to promoting the air quality, but the voltage rising leads to the electromagnetic noise increase of the LC oscillating circuit of the inside boost circuit of ion generator and transformer, and can't eliminate completely, has reduced the comfort level of air conditioner.
The existing solution is to gradually reduce the discharge voltage, gradually measure the noise value, and measure the voltage meeting the noise value under the mute condition. The test shows that the voltage is reduced to 2KV, and the noise requirement is met. However, reducing the discharge voltage to a constant value greatly reduces the sterilization effect, and thus, a dynamic control method is required which can meet the noise requirement and does not excessively reduce the sterilization effect.
Disclosure of Invention
The invention aims to provide an air conditioner control method, an air conditioner control device and an air conditioner system, and aims to solve the technical problems in the background art.
In order to achieve the above purpose, the specific technical scheme of the air conditioner control method, device and air conditioning system of the invention is as follows:
a control method of an air conditioner, the air conditioner comprises an ion generator, and the control method of the air conditioner mainly comprises the following steps:
acquisition step S1: acquiring blowing noise at an air outlet and ion noise of an ion generator in real time;
control step S2: the working voltage value of the ion generator is controlled by comparing the blowing noise and the ion noise.
Further, before the obtaining step S1, the method further includes a starting step: when the air conditioner is started, the controller starts the ion generator, the ion generator operates according to a preset working voltage value, and the preset working voltage value of the ion generator is set to be 2 KV.
Further, in the control step S2, the MCU controller obtains the blowing noise at the air outlet and the ion noise of the ionizer through the sound detection sensor, and compares the blowing noise and the ion noise;
when the ion noise is smaller than the blowing noise, the MCU controller controls the voltage regulating driver to increase the working voltage value of the ion generator, and the increase of the working voltage value is 50-100V;
when the ion noise is larger than the blowing noise, the MCU controller controls the voltage regulating driver to reduce the working voltage value of the ion generator, and the reduction amount of the working voltage value is 200V-300V.
Further, when the ion noise is detected to be 3-5dB lower than the blowing noise, the adjustment quantity of the working voltage value of the ion generator is 0, the working voltage of the ion generator is 0-4KV, and the MUC controller acquires the noise value once every 2-5 s.
A control device of an air conditioner including an ionizer, the control device comprising:
an acquisition module: the device is used for acquiring blowing noise at an air outlet of the air conditioner and ion noise of an ion generator;
an MCU control module; the device is used for comparing the blowing noise and the ion noise acquired by the acquisition module so as to control the working voltage of the ion generator.
Further, the acquisition module comprises a first sound detection module and a second sound detection module, the first sound detection module is arranged at an air outlet of the air conditioner and used for acquiring blowing noise, and the second sound detection module is arranged close to the ion generator and used for acquiring ion noise.
Furthermore, the control device further comprises an AD conversion module, wherein the AD conversion module converts the sound signal collected by the acquisition module into an electric signal from an analog signal, and transmits the electric signal to the MCU control module.
Furthermore, the control device also comprises a voltage regulation driving module, and the voltage regulation module regulates the working voltage of the ion generator according to the comparison result of the MCU control module and outputs the working voltage to the ion generator;
when the MCU control module judges that the ion noise is smaller than the blowing noise, the MCU control module controls the voltage regulation driving module to increase the working voltage value of the ion generator, and the increase of the working voltage value is 50-100V;
when the MCU control module judges that the ion noise is larger than the blowing noise, the MCU control module controls the voltage regulation driving module to reduce the working voltage value of the ion generator, and the reduction amount of the working voltage value is 200-250V.
Further, when the fact that the ion noise is 3-5dB lower than the blowing noise is detected, the adjustment quantity of the working voltage value of the ion generator is 0, the working voltage of the ion generator is 0-4KV, and the MUC control module obtains the noise value once every 2-5 s.
An air conditioning system comprises the control device of the air conditioner.
The air conditioner control method, the air conditioner control device and the air conditioner system have the following advantages:
according to the control method of the air conditioner, the noise value is detected and compared in real time, and then the working voltage of the ion generator is dynamically adjusted along with the wind speed, so that the optimal sterilization and energy-saving effects are obtained, the noise of an air conditioning system is reduced, and the user experience is greatly improved; in the adjustment process of the ion generator, the adjustment amount of the working voltage can meet the requirement of ensuring the optimal sterilization effect while reducing noise.
Drawings
Fig. 1 is a schematic view of a control method of an air conditioner according to a first embodiment of the present invention;
fig. 2 is a schematic view of a control method of an air conditioner according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control device of an air conditioner according to the present invention.
The reference numbers in the figures illustrate: 1. a first sound detection module; 2. a second sound detection module; 3. an AD conversion module; 4. an MCU control module; 5. a voltage regulation driving module; 6. an ion generator.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, a control method, a control device and an air conditioning system of an air conditioner according to the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a control method of an air conditioner, the air conditioner further includes an ionizer 6, the ionizer 6 is disposed at an air outlet of the air conditioner, the control method of the air conditioner mainly includes the following steps:
acquisition step S1: acquiring blowing noise at the air outlet and ion noise of the ion generator 6 in real time;
control step S2: the operating voltage value of the ionizer 6 is controlled by comparing the magnitudes of the blowing noise and the ion noise.
As shown in fig. 2, before the obtaining step S1, the method further includes a starting step: when the air conditioner is started, the controller starts the ion generator 6, and the ion generator 6 operates according to a preset working voltage value. Generally, when the working voltage of the ionizer 6 is actually measured at 2KV at present, the ion noise is not greater than the blowing noise of the silent wind speed gear, the noise requirement of the silent wind speed gear is not greater than 20dB at present, and the noise requirement of the highest windshield is not greater than 45dB, so that the preset working voltage value of the ionizer 6 can be set to 2 KV.
In the control step S2, the MCU controller obtains the blowing noise at the air outlet and the ion noise of the ionizer 6 through the sound detection sensor, respectively, and compares the blowing noise and the ion noise;
when the ion noise is smaller than the blowing noise, the MCU controller controls the voltage regulating driver to increase the working voltage value of the ion generator 6, the increase of the working voltage value is 50V-100V, the regulating amplitude of the working voltage is small, and the phenomenon that the ion noise is suddenly increased due to the surge of the voltage to influence the use experience of a user is avoided;
when the ion noise is larger than the blowing noise, the MCU controller controls the voltage regulation driver to reduce the working voltage value of the ion generator 6, the reduction of the working voltage value is 200V-300V, the electromagnetic noise of the ion generator 6 is rapidly reduced, the electromagnetic noise can not be heard by a user, and meanwhile, the maximum ion generation amount is guaranteed to be output.
When the ion noise is detected to be 3-5dB lower than the blowing noise, the adjustment quantity of the working voltage value of the ion generator 6 is 0, and the working voltage of the ion generator 6 is between 0 and 4 KV. The MUC controller acquires noise values once every 2-5 s. If the user turns off the sterilization function, a voltage of 0V is output, turning off the ionizer 6.
As shown in fig. 3, a controlling means of air conditioner, air conditioner include the casing, set up the wind channel in the casing, wind channel one end and shell top surface's air intake intercommunication, the other end in wind channel and the air outlet intercommunication of casing bottom set up evaporimeter and fan in the wind channel, the air conditioner still includes ion generator 6, ion generator 6 sets up the air outlet department at the air conditioner, controlling means includes:
an acquisition module: the air conditioner is used for acquiring blowing noise at an air outlet of the air conditioner and ion noise of the ion generator 6;
an MCU control module 4; for comparing the blowing noise and the ion noise acquired by the acquisition module to control the operating voltage of the ionizer 6.
Wherein the acquisition module includes first sound detection module 1 and second sound detection module 2, and first sound detection module 1 sets up in the air outlet department of air conditioner for acquire the noise of blowing, and second sound detection module 2 is close to the setting of ion generator 6, is used for acquiring the ion noise. The first sound detection module 1 and the second sound detection module 2 may be microphones.
The control device further comprises an AD conversion module 3, the AD conversion module 3 converts the sound signals collected by the acquisition module into electric signals from analog signals, and the electric signals are transmitted to the MCU control module 4.
The control device further comprises a voltage regulation driving module 5, and the voltage regulation module regulates the working voltage of the ion generator 6 according to the comparison result of the MCU control module 4 and outputs the working voltage to the ion generator 6. The voltage regulation driving module 5 is a PMW stepless voltage regulation driving circuit, and the circuit is the prior art.
When the MCU control module 4 judges that the ion noise is smaller than the blowing noise, the MCU control module 4 controls the voltage regulation driving module 5 to increase the working voltage value of the ion generator 6, and the increase amount of the working voltage value is 50V-100V;
when the MCU control module 4 judges that the ion noise is larger than the blowing noise, the MCU control module 4 controls the voltage regulation driving module 5 to reduce the working voltage value of the ion generator 6, and the reduction amount of the working voltage value is 200V-250V.
When the ion noise is detected to be 3-5dB lower than the blowing noise, the adjustment quantity of the working voltage value of the ion generator 6 is 0, and the working voltage of the ion generator 6 is between 0 and 4 KV. The MUC control module acquires a noise value at intervals of 2-5s every time.
The invention also provides an air conditioning system which comprises the control device of the air conditioner.
According to the control method, the noise value is detected and compared in real time, and then the working voltage of the ion generator 6 is dynamically adjusted along with the wind speed, so that the optimal sterilization and energy-saving effects are obtained, the noise of an air conditioning system is reduced, and the user experience is greatly improved; in the adjustment process of the ion generator 6, the adjustment amount of the working voltage can meet the requirement of ensuring the optimal sterilization effect while reducing noise.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. A control method of an air conditioner, the air conditioner comprises an ion generator (6), and is characterized by mainly comprising the following steps:
acquisition step S1: acquiring blowing noise at the air outlet and ion noise of an ion generator (6) in real time;
control step S2: the operating voltage value of the ionizer (6) is controlled by comparing the magnitudes of the blowing noise and the ion noise, wherein,
when the ion noise is smaller than the blowing noise, the MCU controller controls the voltage regulating driver to increase the working voltage value of the ion generator (6), and the increase amount of the working voltage value is 50-100V;
when the ion noise is larger than the blowing noise, the MCU controller controls the voltage regulating driver to reduce the working voltage value of the ion generator (6), and the reduction amount of the working voltage value is 200-300V.
2. The control method of an air conditioner according to claim 1, further comprising, before the obtaining step S1, a starting step of: when the air conditioner is started, the controller starts the ion generator (6), the ion generator (6) operates according to a preset working voltage value, and the preset working voltage value of the ion generator (6) is set to be 2 KV.
3. The control method of an air conditioner according to claim 1, wherein in the control step S2, the MCU controller respectively acquires the blowing noise at the air outlet and the ion noise of the ionizer (6) through a sound detection sensor and compares the blowing noise and the ion noise.
4. The control method of an air conditioner according to claim 1, wherein when it is detected that the ion noise is 3-5dB smaller than the blowing noise, the adjustment amount of the operation voltage value of the ionizer (6) is 0, the operation voltage of the ionizer (6) is between 0-4KV, and the MUC controller acquires the noise value once every 2-5 s.
5. A control device of an air conditioner including an ionizer (6), characterized by comprising:
an acquisition module: the air conditioner is used for acquiring blowing noise at an air outlet of the air conditioner and ion noise of an ion generator (6);
an MCU control module (4); the device is used for comparing the blowing noise and the ion noise acquired by the acquisition module so as to control the working voltage of the ion generator (6);
the voltage regulating driving module (5) is used for regulating the working voltage of the ion generator (6) according to the comparison result of the MCU control module (4) and outputting the working voltage to the ion generator (6);
when the MCU control module (4) judges that the ion noise is smaller than the blowing noise, the MCU control module (4) controls the voltage regulation driving module (5) to increase the working voltage value of the ion generator (6), and the increase amount of the working voltage value is 50-100V;
when the MCU control module (4) judges that the ion noise is larger than the blowing noise, the MCU control module (4) controls the voltage regulation driving module (5) to reduce the working voltage value of the ion generator (6), and the reduction amount of the working voltage value is 200V-250V.
6. The control device of the air conditioner according to claim 5, wherein the obtaining module comprises a first sound detecting module (1) and a second sound detecting module (2), the first sound detecting module (1) is disposed at an air outlet of the air conditioner for obtaining the blowing noise, and the second sound detecting module (2) is disposed near the ion generator (6) for obtaining the ion noise.
7. The control device of the air conditioner according to claim 6, further comprising an AD conversion module (3), wherein the AD conversion module (3) converts the sound signal collected by the acquisition module from an analog signal to an electric signal and transmits the electric signal to the MCU control module (4).
8. The control apparatus of an air conditioner according to claim 5, wherein when it is detected that the ion noise is 3-5dB less than the blowing noise, the adjustment amount of the operation voltage value of the ionizer (6) is 0, the operation voltage of the ionizer (6) is between 0-4KV, and the MUC control module acquires the noise value once every 2-5 s.
9. An air conditioning system characterized by comprising the control device of an air conditioner according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911109955.XA CN110887162B (en) | 2019-11-14 | 2019-11-14 | Air conditioner control method and device and air conditioner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911109955.XA CN110887162B (en) | 2019-11-14 | 2019-11-14 | Air conditioner control method and device and air conditioner system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110887162A CN110887162A (en) | 2020-03-17 |
| CN110887162B true CN110887162B (en) | 2020-10-09 |
Family
ID=69747457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911109955.XA Active CN110887162B (en) | 2019-11-14 | 2019-11-14 | Air conditioner control method and device and air conditioner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110887162B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303829B (en) * | 2020-09-18 | 2021-11-30 | 珠海格力电器股份有限公司 | Wind noise intelligent wind speed adjusting method and system, air conditioner, remote controller and storage medium |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101233442B1 (en) * | 2011-05-26 | 2013-02-14 | 세종대학교산학협력단 | A ventilation device for underground parking lot using regain static pressure |
| CN103007329B (en) * | 2012-12-30 | 2015-01-28 | 苏州贝昂科技有限公司 | Ion wind purifier for noise reduction |
| CN103912921B (en) * | 2014-03-28 | 2017-01-25 | 上海龙禹环保科技有限公司 | Large-area horizontal air supply type air purifier |
| CN104089330B (en) * | 2014-07-14 | 2017-01-04 | 黎建良 | A kind of special indoor split-type air conditioner in bedroom and air-conditioner |
| CN104676763A (en) * | 2015-03-26 | 2015-06-03 | 广东美的暖通设备有限公司 | Air conditioner indoor unit and air conditioner with same |
| CN105135543B (en) * | 2015-09-09 | 2018-06-29 | 天津市科易电子科技有限公司 | Efficient air purifier electrostatic precipitator |
| CN205303947U (en) * | 2015-12-15 | 2016-06-08 | 芜湖美智空调设备有限公司 | Ion generator and electrical equipment |
| CN108019917B (en) * | 2016-11-01 | 2020-09-25 | 青岛海尔空调器有限总公司 | Indoor unit of air conditioner |
| JP2018136038A (en) * | 2017-02-20 | 2018-08-30 | シャープ株式会社 | Air conditioner |
| CN107178876B (en) * | 2017-06-27 | 2019-11-26 | 广东美的制冷设备有限公司 | Control method, control device, computer readable storage medium and air conditioner |
| CN108088040A (en) * | 2017-12-01 | 2018-05-29 | 芜湖美智空调设备有限公司 | Air-conditioning noise-reduction method, air conditioner noise reduction device, air-conditioning and storage medium |
-
2019
- 2019-11-14 CN CN201911109955.XA patent/CN110887162B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110887162A (en) | 2020-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104344535B (en) | Method and device for adaptively adjusting frequency of conditioner motor and air conditioner | |
| CN104748303B (en) | Air-conditioner control method, device and system based on wearable device | |
| CN103353136B (en) | A kind of there is air quantity regulatory function range hood and control system and control method | |
| CN110887162B (en) | Air conditioner control method and device and air conditioner system | |
| CN105786442A (en) | Volume control method and intelligent terminal | |
| CN109959150A (en) | Air-conditioning noise control method and system | |
| CN103383129A (en) | Control method, control device and air conditioner | |
| CN105241013A (en) | Control method and device for air conditioner and air conditioner | |
| DE112011101770T5 (en) | Air conditioning for one vehicle | |
| CN105115112A (en) | Control method and device of air conditioning unit | |
| CN111023407B (en) | Control method and control system for improving heating comfort of air conditioner and air conditioner | |
| CN104296327B (en) | Control method and control device of air conditioner and air conditioner | |
| CN110454883A (en) | A kind of adjustable intelligent air purification device of air quantity and adjusting method | |
| JPS5818046A (en) | Current controlling method for air conditioner | |
| EP3240974B1 (en) | Method and system for influencing the sound emission of a heat pump or of an air-conditioning system | |
| CN110762728B (en) | Indoor air conditioner simulation noise reduction control method and indoor air conditioner | |
| CN204153923U (en) | A kind of Automatic Control stepless time adjustment New-air purifying system | |
| CN2886142Y (en) | Human body comfort induction controlled electric fan | |
| CN209726439U (en) | A kind of multinode inductive frequency conversion speed regulation air exhausting device | |
| CN101226409B (en) | Method and device for intelligently controlling concentration of carbon dioxide | |
| CN114216185A (en) | Control method of humidity-adjustable air purifier and air purifier | |
| CN211822707U (en) | Active noise reduction air conditioner | |
| CN102829526B (en) | Control method of direct current output voltage of switch power supply | |
| CN107547018A (en) | Noise control method and system for motor | |
| CN110660379A (en) | Noise processing method and device and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |