CN105158504A - Wind speed and wind pressure sensor for range hood and range hood - Google Patents
Wind speed and wind pressure sensor for range hood and range hood Download PDFInfo
- Publication number
- CN105158504A CN105158504A CN201510591838.7A CN201510591838A CN105158504A CN 105158504 A CN105158504 A CN 105158504A CN 201510591838 A CN201510591838 A CN 201510591838A CN 105158504 A CN105158504 A CN 105158504A
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- China
- Prior art keywords
- pressure
- wind speed
- pipe
- range hood
- guiding pipe
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a wind speed and wind pressure sensor for a range hood. The wind speed and wind pressure sensor comprises a sampling portion. The sampling portion comprises a pressure taking pipe, a first pressure leading pipe, a second pressure leading pipe and a pressure sensor, wherein the first pressure leading pipe and the second pressure leading pipe are arranged at the end portion of the pressure taking pipe; and the first pressure leading pipe and the second pressure leading pipe are connected to the pressure sensor through conduits respectively. The pressure taking pipe is internally provided with a separator plate. The separator plate separates the inner side of the pressure taking pipe into a first pressure taking cavity and a second pressure taking cavity, wherein the first pressure taking cavity faces to the airflow, while the second pressure taking cavity is away from the airflow. The first pressure leading pipe is communicated with the first pressure taking cavity; the second pressure leading pipe is communicated with the second pressure taking cavity; high-pressure pressure taking holes are arranged in the bottom of the pressure taking pipe, and are in a V shape; and low-pressure pressure taking holes are arranged in the side wall of the pressure taking pipe, and are in alternative distribution with the high-pressure pressure taking holes.
Description
Technical field
The present invention relates to a kind of sensor, especially a kind of wind speed and pressure sensor for range hood, a kind of application has the range hood of this wind speed and pressure sensor, and the rotation speed of fan self_adaptive adjusting method of this range hood.
Background technology
Range hood in use, when indoor oil smoke which increase or common flue blast increase time, smoke discharging effect is improved with increasing exhaust amount with regard to needs adjustment motor speed, traditional range hood often needs user according to subjective feeling manual adjustments, so not only take busy both hands, and finger also becomes easily infected by greasy dirt; Environmentally automatically regulate wind speed greatly can promote the intellectuality of lampblack absorber, this is one of characteristic feature of following kitchen appliance; Automatically wind speed is reduced when oil smoke concentration is low, can saves energy, also to a certain degree can reduce noise, build comfortable cooking environments.
Principle and the device of existing several automatic adjustment lampblack absorber wind speed are: 1, the size of perception range burner firepower by fume exhauster air inlet temperature value, then adjust the rotating speed of motor; 2, by analyzing the image in the kitchen of shooting, Smoke Detection being carried out to image, and judges the rank of smog, regulate the rotating speed of motor according to the degree of smog; 3, detect oil smoke concentration by photoelectric detecting method, then control the rotating speed of motor according to oil smoke concentration; 4, detect motor speed by Hall element, current transformer detects current of electric.Then the rotating speed of motor is regulated according to the load of blower fan.Above patent is all adopt indirect parameter (temperature, image, oil smoke concentration, electric current) to react wind speed, be subject to the impact of several factors, such as along with the increase of service time, current of electric can be increasing, even when now back pressure does not increase, motor speed is also increase, and the response speed of range hood and sensitivity are all lower.
In addition a kind of self-adaptive regulating with the sensor directly obtaining wind speed and pressure is also had, as the rotation speed of fan self-adaptive regulating of application number a kind of lampblack absorber disclosed in the Chinese patent of 201210036642.8 of the applicant, include the rotational speed control module of the motor speed of blower fan system and this blower fan system of change, and sensor, for the air draft pressure size of perception blower fan system directly or indirectly, but, sensor wherein is comparatively spoken of in general terms, and does not know the concrete structure of sensor.And the existing power hand shaft for air-conditioning, HVAC system, as conventional flowmeter, be not then suitable for the working environment of range hood, therefore also need for further study, to obtain the wind speed and pressure sensor being suitable for range hood working environment.
Summary of the invention
First technical matters to be solved by this invention is for above-mentioned problems of the prior art, provides a kind of detection timely and conveniently for the wind speed and pressure sensor of range hood.
Second technical matters to be solved by this invention is to provide the range hood that a kind of application has above-mentioned wind speed and pressure sensor.
3rd technical matters to be solved by this invention is to provide a kind of rotation speed of fan self_adaptive adjusting method of above-mentioned range hood.
The present invention solves the technical scheme that above-mentioned first technical matters adopt: a kind of wind speed and pressure sensor for range hood, comprise sampling section, described sampling section comprises pressure pipe, be arranged on the first pressure guiding pipe and second pressure guiding pipe of described pressure pipe end, and pressure transducer, described first pressure guiding pipe and the second pressure guiding pipe respectively by tubes connection to described pressure transducer; Be provided with dividing plate in described pressure pipe, described dividing plate will be divided into the first pressure chamber and the second pressure chamber in described pressure pipe, described first pressure chamber is towards air-flow, and described second pressure chamber is away from air-flow; Described first pressure guiding pipe is communicated with in described first pressure chamber, and described second pressure guiding pipe is communicated with in described second pressure chamber; It is characterized in that: described high pressure pressure port is positioned at the bottom of described pressure pipe, in inverted V-shaped; Described low pressure pressure port is positioned on the sidewall of described pressure pipe, and is interspersed with described high pressure pressure port.
For avoiding greasy dirt to block sampling section further, described first pressure guiding pipe and the second pressure guiding pipe tilt to extend from the junction with described pressure pipe to the direction away from air-flow.
Data for ease of recording according to the sampling section of wind speed and pressure sensor control the blower fan of range hood, described wind speed and pressure sensor also comprises the circuit control part that the signal that can export according to described pressure transducer obtains real-time wind speed V, and described circuit control part is positioned at outside described outlet housing.
Described circuit control part comprises the rotational speed control module of the rotation speed of fan of main control module and the described range hood of control, described main control module is electrically connected with described pressure transducer and rotational speed control module respectively, thus the real time value that pressure transducer detects by main control module is compared with the threshold value preset, thus to rotational speed control module output speed signal, to control the motor speed of blower fan.
The present invention solves the technical scheme that above-mentioned second technical matters adopt: a kind of range hood, comprise blower fan, with the outlet housing at air outlet place being positioned at described blower fan, it is characterized in that: described outlet housing is provided with wind speed and pressure sensor as above, the pressure pipe of described wind speed and pressure sensor is horizontally set in described outlet housing, and described first pressure guiding pipe, the second pressure guiding pipe, pressure transducer and circuit control part are positioned at outside described outlet housing.
The present invention solves above-mentioned 3rd technical scheme that technical matters adopts: a kind of rotation speed of fan self_adaptive adjusting method of range hood, is characterized in that: comprise the steps:
1) open described range hood, described blower fan runs under appointment n gear;
2) detect real-time wind speed V by the sampling section of described wind speed and pressure sensor and be transferred to described circuit control part, by described circuit control part by real-time wind speed V and wind speed threshold X %*V
n0relatively, X% is preset value, V
n0for the wind speed under the n gear that described blower fan records under without back pressure environment, judge V and X%*V
n0magnitude relationship;
3) if V is not less than X%*V
n0, then described blower fan keeps operating at n gear; If V is less than X%*V
n0, then described circuit control part controls described blower fan and jumps to the running of n+1 gear, after this repeats step 3).
Compared with prior art, the invention has the advantages that: the high pressure pressure port of wind speed and pressure sensor is inverted V-shaped, wall attachment effect can be utilized to make greasy dirt can be relatively easy to flow down, and high pressure pressure port is not easily blocked; Low pressure pressure port and high pressure pressure port are interspersed, and the greasy dirt thus on low pressure pressure port can not flow directly to high pressure pressure port and result in blockage; The junction of two pressure guiding pipes tilts to away from airflow direction, also can greasy dirt be avoided further to block; By arranging wind speed and pressure sensor, the wind speed directly by obtaining regulates rotation speed of fan, can improve reaction velocity and the sensitivity of range hood.
Accompanying drawing explanation
Fig. 1 is the sampling section schematic diagram of wind speed and pressure sensor of the present invention;
Fig. 2 is the cut-open view of the pressure pipe of wind speed and pressure sensor of the present invention;
Fig. 3 is the circuit control part schematic diagram of wind speed and pressure sensor of the present invention;
Fig. 4 is the schematic diagram that application of the present invention has the outlet housing of the range hood of wind speed and pressure sensor;
Fig. 5 is range hood self_adaptive adjusting method flow diagram of the present invention;
Fig. 6 is the wind speed back pressure graph of relation of the first duty of range hood of the present invention;
Fig. 7 is the wind speed back pressure graph of relation of range hood the second duty of the present invention;
Fig. 8 is the wind speed back pressure graph of relation of the third duty of range hood of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
See Fig. 1, a kind of wind speed and pressure sensor, for range hood, comprise sampling section and circuit control part, sampling section comprises pressure pipe 1, is arranged on the first pressure guiding pipe 21 and the second pressure guiding pipe 22 of pressure pipe 1 end, and pressure transducer 3.
Wherein, there is in pressure pipe 1 dividing plate 11 axially arranged along pressure pipe 1, thus pressure pipe 1 is divided into the first pressure chamber 12 and the second pressure chamber 13 being positioned at dividing plate 11 both sides.First pressure chamber 12 is towards air-flow, and the second pressure chamber 13 is away from air-flow, and namely air-flow is when pressure pipe 1, first through the first pressure chamber 12, then through the second pressure chamber 13.
Pressure pipe 1 offers multiple high pressure pressure port 14 with being communicated with in the first pressure chamber 12, and with the low pressure pressure port 15 be communicated with in the second pressure chamber 13, air-flow enters in the first pressure chamber 12 by high pressure pressure port 14, also enters in the second pressure chamber 13 by low pressure pressure port 15.First pressure guiding pipe 21 guides high pressure draught with the first pressure chamber 12 interior connection, second pressure guiding pipe 22 guides low-pressure air current with the second pressure chamber 13 interior connection, thus, the first pressure guiding pipe 21 and the second pressure guiding pipe 22 are guided out the air-flow of different pressures, can record wind speed and pressure by this pressure reduction.The principle of above-mentioned pressure pipe 1 is similar to the power hand shaft of air-conditioning, HVAC system.
In the present embodiment, pressure pipe 1 is horizontally disposed with, and air-flow is from the bottom to top through pressure pipe 1, and the first pressure chamber 12 is positioned at below the second pressure chamber 13.For the working environment making pressure pipe 1 be applicable to range hood, high pressure pressure port 14 is positioned at the bottom of pressure pipe 1, and in inverted V-shaped, wall attachment effect can be utilized to make greasy dirt can be relatively easy to flow down, and high pressure pressure port 14 is not easily blocked.Low pressure pressure port 15 is positioned on the sidewall of pressure pipe 1, and is interspersed with high pressure pressure port 14, and namely not overlapping in the radial direction of pressure pipe 1, the greasy dirt thus on low pressure pressure port 15 can not flow directly to high pressure pressure port 14.First pressure guiding pipe 21 and the second pressure guiding pipe 22 tilt upward from the junction with pressure pipe 1 and extend (tilting to away from airflow direction), also can greasy dirt be avoided further to block.
Pressure transducer 3, first pressure guiding pipe 21 and the second pressure guiding pipe 22 are connected to pressure transducer 3 respectively by the first conduit 41 and the second conduit 42, according to the pressure reduction that two pressure guiding pipes export, according to dynamic pressure and wind speed relation in Bernoulli equation, and through excess temperature, humidity, the isoparametric compensation of air pressure, obtain real-time wind speed V.
See Fig. 3, circuit control part, comprise main control module 5 and rotational speed control module 6, can with reference to disclosed in the patent documentation in background technology, rotational speed control module 5 controls and changes the motor speed of the blower fan of range hood, and main control module 5 is electrically connected with pressure transducer 3, and the real time value detected by pressure transducer 3 is compared with the threshold value preset, thus to rotational speed control module 6 output speed signal, to control the motor speed of blower fan.
See Fig. 4, wind speed and pressure sensor of the present invention, pressure pipe 1 is flatly arranged in outlet housing 7, and the first pressure guiding pipe 21, second pressure guiding pipe 22, pressure transducer 3 and circuit control part are positioned at outside outlet housing 7.Outlet housing 7 is arranged on the fan outlet of range hood.
Above-mentioned range hood, operationally, Automatic adjusument can be carried out to the rotation speed of fan of range hood, the rotation speed of fan of range hood is set to multiple gear, and adopt the mode of the threshold value of adjustment dynamic pressure automatically to carry out the automatic adjustment of rotation speed of fan, it is according to being: under the same wind-speed gear of range hood, wind speed reduces along with the increase of back pressure, the experiment proved that, blower fan is under different gear, and the relation curve of its wind speed and back pressure mutually disjoints.
See Fig. 5, the control method of its Automatic adjusument of blower fan is:
1) open range hood, started shooting by user or other sensors, and run under appointment n gear;
2) detect real-time wind speed V by the sampling section of wind speed and pressure sensor, be transferred to main control module 5, main control module 5 is by this real-time wind speed V and wind speed threshold X %*V
n0relatively, wherein, X% is preset value, as 90%, can for the empirical value obtained according to range hood environment for use, and V
n0for the wind speed under the n gear that under experimental situation (without in back pressure situation) records, judge V and X%*V
n0magnitude relationship;
3) if V is not less than X%*V
n0, then range hood keeps operating at n gear; If V is less than X%*V
n0, then main control module 5 is to rotational speed control module 6 output speed signal, makes the motor of the blower fan of range hood automatically jump to n+1 gear running (wind speed increasing), after this continues to judge V and X%*V
n0between size, repeat step 3.
Particularly, see Fig. 6, in the plot, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, gear 4 and the wind speed of gear 5 under different back pressure, during as opened, gear is 2, and now, working point is at B point, the wind speed of B point is greater than A point (threshold point), then range hood then remains on gear 2 and works.
See Fig. 7, same, in the plot, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, gear 4 and the wind speed of gear 5 under different back pressure, during as opened, gear is 2, now, working point is at B point, and the wind speed of B point is less than A point (threshold point), then range hood jumps to gear 3 automatically, now working point is C point, and the wind speed of C point is greater than A point, and after this range hood just remains on gear 3 and works.
See Fig. 8, same, in the plot, 1,2,3,4,5 curves are respectively gear 1, gear 2, gear 3, gear 4 and the wind speed of gear 5 under different back pressure, during as opened, gear is 2, and now, working point is at B point, the wind speed of B point is less than A point (threshold point), then range hood jumps to gear 3 automatically, and now working point is C point, and the wind speed of C point is still less than A point, then range hood continues up trip stop and works to gear 4, until working point wind speed is greater than A point.
Claims (6)
1. the wind speed and pressure sensor for range hood, comprise sampling section, described sampling section comprises pressure pipe (1), be arranged on the first pressure guiding pipe (21) and second pressure guiding pipe (22) of described pressure pipe (1) end, and pressure transducer (3), described first pressure guiding pipe (21) and the second pressure guiding pipe (22) respectively by tubes connection to described pressure transducer (3);
Dividing plate (11) is provided with in described pressure pipe (1), described dividing plate (11) will be divided into the first pressure chamber (12) and the second pressure chamber (13) in described pressure pipe (1), described first pressure chamber (12) is towards air-flow, and described second pressure chamber (13) is away from air-flow; Described first pressure guiding pipe (21) is communicated with in described first pressure chamber (12), and described second pressure guiding pipe (22) is communicated with in described second pressure chamber (13); It is characterized in that:
Described high pressure pressure port (14) is positioned at the bottom of described pressure pipe (1), in inverted V-shaped; Described low pressure pressure port (15) is positioned on the sidewall of described pressure pipe (1), and is interspersed with described high pressure pressure port (14).
2., as claimed in claim 1 for the wind speed and pressure sensor of range hood, it is characterized in that: described first pressure guiding pipe (21) and the second pressure guiding pipe (22) tilt to extend from the junction with described pressure pipe (1) to the direction away from air-flow.
3. the wind speed and pressure sensor for range hood as described in right 1 or 2, is characterized in that: described wind speed and pressure sensor also comprises the circuit control part that the signal that can export according to described pressure transducer (3) obtains real-time wind speed V.
4. as claimed in claim 3 for the wind speed and pressure sensor of range hood, it is characterized in that: described circuit control part comprises the rotational speed control module (6) of the rotation speed of fan of main control module (5) and the described range hood of control, and described main control module (5) is electrically connected with described pressure transducer (3) and rotational speed control module (6) respectively.
5. a range hood, comprise blower fan, with the outlet housing (7) at air outlet place being positioned at described blower fan, it is characterized in that: described outlet housing (7) is provided with the wind speed and pressure sensor as described in claim 3 or 4, the pressure pipe (1) of described wind speed and pressure sensor is horizontally set in described outlet housing (7), and described first pressure guiding pipe (21), the second pressure guiding pipe (22), pressure transducer (3) and circuit control part are positioned at described outlet housing (7) outward.
6. a rotation speed of fan self_adaptive adjusting method for range hood as claimed in claim 5, is characterized in that: comprise the steps:
1) open described range hood, described blower fan runs under appointment n gear;
2) detect real-time wind speed V by the sampling section of described wind speed and pressure sensor and be transferred to described circuit control part, by described circuit control part by real-time wind speed V and wind speed threshold X %*V
n0relatively, X% is preset value, V
n0for the wind speed under the n gear that described blower fan records under without back pressure environment, judge V and X%*V
n0magnitude relationship;
3) if V is not less than X%*V
n0, then described blower fan keeps operating at n gear; If V is less than X%*V
n0, then described circuit control part controls described blower fan and jumps to the running of n+1 gear, after this repeats step 3).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591838.7A CN105158504A (en) | 2015-09-17 | 2015-09-17 | Wind speed and wind pressure sensor for range hood and range hood |
| CN201620028736.4U CN205560899U (en) | 2015-09-17 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
| CN201610021592.4A CN105546603B (en) | 2015-09-17 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591838.7A CN105158504A (en) | 2015-09-17 | 2015-09-17 | Wind speed and wind pressure sensor for range hood and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105158504A true CN105158504A (en) | 2015-12-16 |
Family
ID=54799425
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510591838.7A Withdrawn CN105158504A (en) | 2015-09-17 | 2015-09-17 | Wind speed and wind pressure sensor for range hood and range hood |
| CN201610021592.4A Active CN105546603B (en) | 2015-09-17 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
| CN201620028736.4U Withdrawn - After Issue CN205560899U (en) | 2015-09-17 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021592.4A Active CN105546603B (en) | 2015-09-17 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
| CN201620028736.4U Withdrawn - After Issue CN205560899U (en) | 2015-09-17 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN105158504A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465860A (en) * | 2015-12-25 | 2016-04-06 | 宁波方太厨具有限公司 | Actual flow measuring device of extractor hood and measuring method of actual flow measuring device |
| CN105465864A (en) * | 2016-01-13 | 2016-04-06 | 宁波方太厨具有限公司 | Air speed and air pressure sensor for range hood and range hood |
| CN105485742A (en) * | 2016-01-13 | 2016-04-13 | 宁波方太厨具有限公司 | Air speed and air pressure sensor for extractor hood and extractor hood |
| CN107152948A (en) * | 2016-03-03 | 2017-09-12 | 博西华电器（江苏）有限公司 | Portable detector and the detection method of smoke exhaust ventilator for smoke exhaust ventilator |
| CN107655048A (en) * | 2016-07-26 | 2018-02-02 | 华帝股份有限公司 | Range hood and constant air volume adjusting method and system thereof |
| CN112087167A (en) * | 2020-08-12 | 2020-12-15 | 华帝股份有限公司 | Motor control method of variable-frequency range hood and variable-frequency range hood |
| CN113759146A (en) * | 2021-09-01 | 2021-12-07 | 南京英格玛仪器技术有限公司 | Self-balancing uniform wind speed acquisition device |
| CN114251699A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, range hood control method and computer storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5036711A (en) * | 1989-09-05 | 1991-08-06 | Fred P. Good | Averaging pitot tube |
| CN1696617A (en) * | 2005-06-06 | 2005-11-16 | 熊辉 | Even speed tube of flow sensor |
| CN102589025B (en) * | 2012-02-17 | 2014-06-11 | 宁波方太厨具有限公司 | Fan speed adaptive regulation device of range hood and control method thereof |
| CN103940479A (en) * | 2013-01-18 | 2014-07-23 | 上海艾一机电设备有限公司 | An anti-blocking uniform-velocity-tube flow sensor |
| CN203704986U (en) * | 2014-02-18 | 2014-07-09 | 江苏润仪仪表有限公司 | High-precision inserting type multi-dimensional sensing flowmeter |
| CN105158504A (en) * | 2015-09-17 | 2015-12-16 | 宁波方太厨具有限公司 | Wind speed and wind pressure sensor for range hood and range hood |
-
2015
- 2015-09-17 CN CN201510591838.7A patent/CN105158504A/en not_active Withdrawn
-
2016
- 2016-01-13 CN CN201610021592.4A patent/CN105546603B/en active Active
- 2016-01-13 CN CN201620028736.4U patent/CN205560899U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465860A (en) * | 2015-12-25 | 2016-04-06 | 宁波方太厨具有限公司 | Actual flow measuring device of extractor hood and measuring method of actual flow measuring device |
| CN105465864A (en) * | 2016-01-13 | 2016-04-06 | 宁波方太厨具有限公司 | Air speed and air pressure sensor for range hood and range hood |
| CN105485742A (en) * | 2016-01-13 | 2016-04-13 | 宁波方太厨具有限公司 | Air speed and air pressure sensor for extractor hood and extractor hood |
| CN105485742B (en) * | 2016-01-13 | 2018-02-02 | 宁波方太厨具有限公司 | Wind speed and pressure sensor and range hood for range hood |
| CN105465864B (en) * | 2016-01-13 | 2018-11-06 | 宁波方太厨具有限公司 | Wind speed and pressure sensor and range hood for range hood |
| CN107152948A (en) * | 2016-03-03 | 2017-09-12 | 博西华电器（江苏）有限公司 | Portable detector and the detection method of smoke exhaust ventilator for smoke exhaust ventilator |
| CN107655048A (en) * | 2016-07-26 | 2018-02-02 | 华帝股份有限公司 | Range hood and constant air volume adjusting method and system thereof |
| CN107655048B (en) * | 2016-07-26 | 2023-11-03 | 华帝股份有限公司 | Range hood and constant air quantity adjusting method and system thereof |
| CN112087167A (en) * | 2020-08-12 | 2020-12-15 | 华帝股份有限公司 | Motor control method of variable-frequency range hood and variable-frequency range hood |
| CN114251699A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, range hood control method and computer storage medium |
| CN113759146A (en) * | 2021-09-01 | 2021-12-07 | 南京英格玛仪器技术有限公司 | Self-balancing uniform wind speed acquisition device |
| CN113759146B (en) * | 2021-09-01 | 2024-03-19 | 南京英格玛仪器技术有限公司 | Self-balancing uniform wind speed acquisition device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105546603A (en) | 2016-05-04 |
| CN205560899U (en) | 2016-09-07 |
| CN105546603B (en) | 2018-08-07 |
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Application publication date: 20151216 |