CN205351443U - A air speed and pressure sensor and range hood for range hood - Google Patents
A air speed and pressure sensor and range hood for range hood Download PDFInfo
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- CN205351443U CN205351443U CN201620028571.0U CN201620028571U CN205351443U CN 205351443 U CN205351443 U CN 205351443U CN 201620028571 U CN201620028571 U CN 201620028571U CN 205351443 U CN205351443 U CN 205351443U
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Abstract
The utility model discloses a range hood's air speed and pressure sensor, including the sampling part, the pipe is pressed including getting to the sampling part, sets up it presses pipe and second to draw the pressure pipe to get first the drawing of pressing pipe end portion to and pressure sensor, first drawing presses pipe and second to draw to press and tub arrive through pipe connection respectively pressure sensor, get and press the intraductal baffle that is equipped with, the baffle will get to press and intraductally divide into first getting and press chamber and second and get the pressure chamber, first getting presses the chamber towards the air current, and the second is got the pressure chamber and is kept away from the air current, first draw press the pipe with the intracavity intercommunication is pressed to first getting, the second draw press the pipe with the second is got and is pressed the intracavity intercommunication, get press be equipped with on the pipe (1) with first high -pressure pressure port (14) of pressing intercommunication in chamber (12) of getting, get to press to be equipped with on the pipe (1) to get with the second and press the having of in chamber (13) intercommunication low pressure pressure port (15), its characterized in that: the path more than or equal to 3mm of high pressure pressure port, just the area more than or equal to 9mm2 of high pressure pressure port.
Description
Technical field
This utility model relates to a kind of sensor, and 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.
Background technology
Range hood is in use, when the blast of the increase of indoor oil smoke or common flue increases, it is accomplished by adjusting motor speed and improves smoke discharging effect with increasing exhaust amount, traditional range hood generally requires user according to subjective feeling manual adjustments, so do not only take up busy both hands, and finger also becomes easily infected by greasy dirt；Being automatically adjusted wind speed according to environment and can be greatly promoted the intellectuality of lampblack absorber, this is one of the typical characteristic of following kitchen appliance；Automatically reduce wind speed when oil smoke concentration is low, it is possible to saves energy, it is also possible to a certain degree reduce noise, build comfortable cooking environments.
Existing several principle being automatically adjusted lampblack absorber wind speed and device be: 1, the size of perception range burner firepower by fume exhauster air inlet temperature value, then adjusts the rotating speed of motor；2, by analyzing the image in the kitchen of shooting, image is carried out Smoke Detection, 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, motor speed is detected by Hall element, current transformer detection 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, it is subject to the impact of several factors, such as along with the increase of the time of use, current of electric can be increasing, now even back pressure does not increase, motor speed is also increase, and the response speed of range hood and sensitivity are all relatively low.
Self-adaptive regulating in addition with a kind of sensor having and directly obtaining wind speed and pressure, the rotation speed of fan self-adaptive regulating of a kind of lampblack absorber as disclosed in the Chinese patent that application number is 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, air draft pressure size for perception blower fan system directly or indirectly, but, sensor therein is comparatively spoken of in general terms, it is not clear that the concrete structure of sensor.And the existing power hand shaft for air-conditioning, HVAC system, as conventional effusion meter, then it is not suitable for the working environment of range hood, owing to the flue gas in range hood contains a large amount of oil smoke, after using a period of time, the greasy dirt of cohesion often blocks pressure port so that pressure pipe cisco unity malfunction, therefore also need to for further study, to obtain the wind speed and pressure sensor being suitable for range hood working environment.
Utility model content
First to be solved in the utility model technical problem is that for above-mentioned problems of the prior art, it is provided that a kind of detection is timely and conveniently for the wind speed and pressure sensor of range hood.
Second technical problem to be solved in the utility model is to provide a kind of application the range hood of above-mentioned wind speed and pressure sensor.
The technical scheme that above-mentioned first technical problem of this utility model solution adopts is: a kind of wind speed and pressure sensor for range hood, including sampling section, described sampling section includes pressure pipe, it is 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 are connected to described pressure transducer respectively through conduit；Being 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 connects with described first pressure intracavity, and described second pressure guiding pipe connects with described second pressure intracavity；Described pressure pipe is provided with the high pressure pressure port connected with the first pressure intracavity, described pressure pipe is provided with has low pressure pressure port with the second pressure intracavity connects, it is characterized in that: the most path of described high pressure pressure port is be more than or equal to 3mm, and the area of described high pressure pressure port is be more than or equal to 9mm2。
The hole heart of high pressure pressure port described above may be located at bottom pressure pipe and aperture, both sides extends to the two side of pressure port respectively, so that high pressure pressure port entirety is U-shaped.The hole heart of described high pressure pressure port can also be located at the sidewall of pressure pipe and aperture, downside bottom pressure pipe.
Described high pressure pressure port towards gravity direction bottom port aperture more than away from the sidewall of gravity direction along aperture, aperture so that high pressure pressure port is regarded as in inverted V-shaped from the pressure pipe sidewall direction being perpendicular to gravity or inverted U or inverted trapezoidal.
For avoiding greasy dirt blocking high pressure pressure port further, described high pressure pressure port is provided with inwardly protruded interior guide portion away from the inner wall hole edge of gravity direction, and interior guide portion can by greasy dirt diversion high pressure pressure port.
For avoiding greasy dirt blocking high pressure pressure port further, described high pressure pressure port is provided with near the outer cinclides edge of gravity direction can by the outer guide portion of greasy dirt diversion high pressure pressure port.
Described outer guide portion can be the outer guide plate of the tube wall of inclined cut or outwardly convex.
Owing to low pressure pressure port and the second pressure chamber connect, and described second pressure chamber is away from air-flow, is therefore arranged on by low pressure pressure port on the sidewall of described pressure pipe, can ensure that low pressure pressure port will not be blocked by greasy dirt；And in order to ensure the sampling precision of sampling section, described pressure pipe and described high pressure pressure port are interspersed.
Same, the most path of described low pressure pressure port is be more than or equal to 3mm, and the area of described low pressure pressure port is be more than or equal to 9mm2。
For avoid greasy dirt block the first pressure guiding pipe, the second pressure guiding pipe even after conduit, 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, there is the angle of this inclination, even if there being greasy dirt accumulation also can flow backwards from the first pressure guiding pipe and the second pressure guiding pipe.
Data for ease of recording according to the sampling section of wind speed and pressure sensor control the blower fan of range hood, and described wind speed and pressure sensor also includes the circuit control part that the rotation speed of fan of lampblack absorber can carry out control in real time according to the signal that described pressure transducer exports.Described circuit control part is positioned at outside described outlet housing.
Described circuit control part includes 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 electrically connects with described pressure transducer and rotational speed control module respectively, thus the real time value that pressure transducer is detected by main control module is compared with threshold value set in advance, thus to rotational speed control module output speed signal, to control the motor speed of blower fan.
For avoid further greasy dirt block the first pressure guiding pipe, the second pressure guiding pipe even after conduit, described first pressure chamber is provided with the first greasy dirt catch near the first pressure guiding pipe place, and described second pressure chamber is provided with the second greasy dirt catch near the second pressure guiding pipe place.
The first technical scheme that above-mentioned second technical problem of this utility model solution adopts is: a kind of range hood, including blower fan, outlet housing with the 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 second technical scheme that above-mentioned second technical problem of this utility model solution adopts is: a kind of range hood; including cigarette casing body and the blower fan being arranged in cigarette casing body; it is characterized in that: the flue in described air inlet front or the flue at air outlet rear are provided with wind speed and pressure sensor as above; the pressure pipe of described wind speed and pressure sensor is horizontally set in flue; described first pressure guiding pipe, the second pressure guiding pipe, pressure transducer and circuit control part are arranged in a protective cover, and this protective cover is arranged in cigarette casing body.
The third technical scheme that above-mentioned second technical problem of this utility model solution adopts is: a kind of range hood, comprise the pipe being connected with common flue, it is characterized in that: described pipe 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 pipe, described first pressure guiding pipe, the second pressure guiding pipe, pressure transducer) and circuit control part be positioned at outside described pipe.
Compared with prior art, the utility model has the advantage of: no matter high pressure pressure port is which kind of shape is positioned at which kind of position, as long as ensureing that the most path of high pressure pressure port is be more than or equal to 3mm, and the area of described high pressure pressure port is be more than or equal to 9mm2, this size is bigger than the size of an oil dripping dirt, therefore can well prevent greasy dirt from blocking.
Accompanying drawing explanation
Fig. 1 is the sampling section schematic diagram of wind speed wind pressure sensor in this utility model embodiment one；
Fig. 2 is the sectional view of the pressure pipe of wind speed wind pressure sensor in this utility model embodiment one；
Fig. 3 be in Fig. 1 A-A to sectional view.
Fig. 4 is I portion enlarged drawing in Fig. 1.
Fig. 5 is I portion enlarged drawing in Fig. 2.
Fig. 6 is the circuit control part schematic diagram of wind speed wind pressure sensor in this utility model embodiment one；
Fig. 7 is the schematic diagram that application of the present utility model has the outlet housing of the range hood of embodiment one wind speed and pressure sensor；
Fig. 8 is range hood self_adaptive adjusting method flow diagram of the present utility model；
Fig. 9 is the wind speed back pressure graph of relation of the first duty of range hood of the present utility model；
Figure 10 is the wind speed back pressure graph of relation of range hood the second duty of the present utility model；
Figure 11 is the wind speed back pressure graph of relation of the third duty of range hood of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
Referring to Fig. 1, a kind of wind speed and pressure sensor, for range hood, including sampling section and circuit control part, sampling section includes 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, have along the axially arranged dividing plate 11 of pressure pipe 1 in pressure pipe 1, thus pressure pipe 1 being 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 just facing to air-flow, and the second pressure chamber 13 is away from air-flow, and namely air-flow is when pressure pipe 1, first passes through the first pressure chamber 12, then through the second pressure chamber 13.
Pressure pipe 1 offers high pressure pressure port 14 that is multiple and that connect in the first pressure chamber 12, and with the low pressure pressure port 15 connected in the second pressure chamber 13, air-flow can pass through high pressure pressure port 14 and enter in the first pressure chamber 12, enters in the second pressure chamber 13 also by low pressure pressure port 15.First pressure guiding pipe 21 connects guiding high pressure draught with in the first pressure chamber 12, second pressure guiding pipe 22 connects guiding low-pressure air current with in the second pressure chamber 13, thus, first pressure guiding pipe 21 and the second pressure guiding pipe 22 are guided out the air-flow of different pressures, pressure transducer 3 then can obtain the stream pressure value that above-mentioned two is different, and circuit control part then can record wind speed by the pressure reduction of two different stream pressure values.Above-mentioned pressure pipe 1, pressure transducer 3 principle be 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.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, described first pressure chamber 12 is provided with the first greasy dirt catch 16 near the first pressure guiding pipe 21 place, described second pressure chamber 13 is provided with the second greasy dirt catch 17 near the second pressure guiding pipe 22 place, it is avoided that greasy dirt blocks the first pressure guiding pipe, the second pressure guiding pipe conduit even below, shown in Figure 3.
For making pressure pipe 1 be applicable to the working environment of range hood, the most path of described high pressure pressure port is be more than or equal to 3mm, and the area of described high pressure pressure port is be more than or equal to 9mm2.Under this size, high pressure pressure port is bigger than the size of an oil dripping dirt, therefore can well prevent greasy dirt from blocking.
In the present embodiment, the hole heart of high pressure pressure port 14 is positioned at bottom pressure pipe 1 and two side holes is along extending to the two side of pressure port 14 respectively, so that high pressure pressure port 14 is overall U-shaped, and the aperture, upside of high pressure pressure port is be more than or equal to 3mm, and the whole area of high pressure pressure port is be more than or equal to 9mm2, shown in Figure 2；And high pressure pressure port 14 towards gravity direction bottom port aperture more than away from the sidewall of gravity direction along aperture, aperture so that high pressure pressure port is regarded as in inverted V-shaped from the pressure pipe sidewall direction being perpendicular to gravity or inverted U or inverted trapezoidal, shown in Figure 1；The hole shape structure of this high pressure pressure port 14, can conveniently utilize wall attachment effect that the greasy dirt easily bottom port edge being easy to from high pressure pressure port is flowed out, the greasy dirt that can also make not ooze and hang hangs on the tube wall at edge, high pressure pressure port aperture, and high pressure pressure port 14 is not easily blocked by greasy dirt.
Certainly, the position of high pressure pressure port 14 can also overall be opened on the sidewall of pressure pipe 1, that is: namely the hole heart of described high pressure pressure port 14 is positioned at the sidewall of pressure pipe 1 and aperture, downside bottom pressure pipe 1, simultaneously high pressure pressure port 14 can also be made more than the upper hole oral pore footpath away from gravity direction towards the bottom part aperture diameter of gravity direction, so that high pressure pressure port 14 is inverted V-shaped or inverted U or inverted trapezoidal from the one-tenth being perpendicular to gravity direction；In this case, it is no matter that the bottom front of pressure pipe is met to air-flow, or the sidewall front of pressure pipe is met to air-flow, also all can reach the purpose that high pressure pressure port 14 is not easily blocked by greasy dirt.
In the present embodiment, high pressure pressure port 14 away from gravity direction inner wall hole along be provided with inwardly protruding and can by the interior guide portion 18 of greasy dirt diversion high pressure pressure port 14, referring to shown in Fig. 2 and Fig. 5；Being provided with near the outer cinclides edge of gravity direction can by the outer guide portion 19 of greasy dirt diversion high pressure pressure port 14, the present embodiment China and foreign countries guide portion 19 is the tube wall of inclined cut, referring to Fig. 1, shown in 4, outer guide portion 19 by greasy dirt diversion high pressure pressure port, can make greasy dirt drip on the tube wall hanging over pressure pipe 1.
Low pressure pressure port 15 is positioned on the sidewall of pressure pipe 1, and is interspersed with high pressure pressure port 14, i.e. radially not overlapping with high pressure pressure port 14 at pressure pipe 1, and thus the greasy dirt on low pressure pressure port 15 will not flow directly to high pressure pressure port 14.
First pressure guiding pipe 21 and the second pressure guiding pipe 22 are connected to pressure transducer 3 respectively through the first conduit 41 and the second conduit 42, the pressure reduction that pressure transducer 3 exports according to two pressure guiding pipes, according to dynamic pressure in Bernoulli equation and wind speed relation, and through excess temperature, humidity, the isoparametric compensation of air pressure, obtain real-time wind speed V.
Referring to Fig. 6, additionally, wind speed and pressure sensor also includes the circuit control part that the rotation speed of fan of lampblack absorber can carry out control in real time according to the signal of described pressure transducer 3 output, this circuit control part, including main control module 5 and rotational speed control module 6, disclosed in being referred in the patent documentation in background technology, rotational speed control module 5 controls and changes the motor speed of blower fan of range hood, main control module 5 electrically connects with pressure transducer 3, the real time value detected by pressure transducer 3 is compared with threshold value set in advance, thus to rotational speed control module 6 output speed signal, to control the motor speed of blower fan.
Referring to Fig. 7, wind speed and pressure sensor of the present utility model, pressure pipe 1 is horizontally mounted in outlet housing 7, and first pressure guiding pipe the 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.
In wind speed and pressure sensor of the present utility model, pressure pipe 1 can also be horizontally set in the pipe that the exhaust opening with common flue or without the building of common flue is connected, and first pressure guiding pipe the 21, second pressure guiding pipe 22, pressure transducer 3 and circuit control part are positioned at outside described pipe 7；Now, the wind speed of collection is relatively precisely with steady.
Wind speed and pressure sensor of the present utility model can also directly prevent in lampblack absorber enclosure interior, the flue in air inlet front or on the flue at air outlet rear；Being horizontally set in flue by the pressure pipe 1 of wind speed and pressure sensor, described first pressure guiding pipe the 21, second pressure guiding pipe 22, pressure transducer 3 and circuit control part are arranged in a protective cover, then are arranged on by this protective cover in cigarette casing body.
Above-mentioned range hood, operationally, the rotation speed of fan of range hood can be carried out Automatic adjusument, the rotation speed of fan of range hood is set to multiple gear, adopts the mode of the threshold value automatically adjusting dynamic pressure to carry out being automatically adjusted of rotation speed of fan, and 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 gears, and the relation curve of its wind speed and back pressure mutually disjoints.
Referring to Fig. 8, the circuit control part of wind speed and pressure sensor being connected with the blower fan of range hood, the control method of blower fan Automatic adjusument is:
1) open range hood, user or other sensors start shooting, and run under specifying n gear；
2) being detected 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 %*Vn0Relatively, wherein, X% is preset value, such as 90%, it is possible to for the empirical value obtained according to range hood use environment, Vn0For the wind speed under the n gear that records (without in back pressure situation) under experimental situation, it is judged that V and X%*Vn0Magnitude relationship；
3) if V is not less than X%*Vn0, then range hood keeps operating at n gear；If V is less than X%*Vn0, then main control module 5 is to rotational speed control module 6 output speed signal so that the motor of the blower fan of range hood automatic jumps to n+1 gear operating (wind speed increasings), and hereafter continuation judges V and X%*Vn0Between size, repeat step 3.
Specifically, referring to Fig. 9, in the plot, 1,2,3,4,5 curves respectively gear 1, gear 2, gear 3, gear 4 and gear 5 wind speed under different back pressures, during as opened, gear is 2, and now, operating point is at B point, the wind speed of B point is more than A point (threshold point), then range hood is then maintained at gear 2 and works.
Referring to Figure 10, same, in the plot, 1,2,3,4,5 curves respectively gear 1, gear 2, gear 3, gear 4 and gear 5 wind speed under different back pressures, during as opened, gear is 2, now, operating 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 operating point is C point, and the wind speed of C point is more than A point, and hereafter range hood remains in gear 3 and works.
Referring to Figure 11, same, in the plot, 1,2,3,4,5 curves respectively gear 1, gear 2, gear 3, gear 4 and gear 5 wind speed under different back pressures, during as opened, gear is 2, and now, operating 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 operating 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 operating point wind speed is more than A point.
If wind speed and pressure sensor does not include the circuit control part that the rotation speed of fan of lampblack absorber can carry out control in real time according to the signal of described pressure transducer 3 output, wind speed and pressure sensor can also be connected with the master board of range hood, and the rotating speed of existing blower fan is to be controlled by the master board of range hood, then master board controls to control rotation speed of fan according to following step:
1) after, the blower fan of described range hood is unlocked；
2), by the described real-time wind speed of wind speed and pressure Sensor monitoring, and wind speed being transferred to the master board of range hood, the master board of range hood is by real-time wind speed and wind speed threshold X %*Vn0Relatively, X% is preset value, Vn0The rotating speed recorded under without back pressure environment for described blower fan, it is judged that V and X%*Vn0Magnitude relationship；
3) if V is not less than X%*Vn0, then described blower fan is made to keep current rotating speed；If V is less than X%*Vn0, then the master board of lampblack absorber controls described blower fan and increases rotating speed, hereafter repeats step 3).
Claims (14)
1. the wind speed and pressure sensor for range hood, including sampling section, described sampling section includes pressure pipe (1), it is 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) are connected to described pressure transducer (3) respectively through conduit；
Dividing plate (11) it 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) connects with in described first pressure chamber (12), and described second pressure guiding pipe (22) connects with in described second pressure chamber (13)；Described pressure pipe (1) is provided with and the high pressure pressure port (14) connected in the first pressure chamber (12), described pressure pipe (1) be provided with the second pressure chamber (13) in connect have low pressure pressure port (15), it is characterized in that: the most path of described high pressure pressure port is be more than or equal to 3mm, and the area of described high pressure pressure port is be more than or equal to 9mm2。
2. the wind speed and pressure sensor for range hood according to claim 1, it is characterized in that: the hole heart of described high pressure pressure port is positioned at bottom pressure pipe and aperture, both sides extends to the two side of pressure port respectively, so that high pressure pressure port (14) is overall U-shaped.
3. the wind speed and pressure sensor for range hood according to claim 1, it is characterised in that: the hole heart of described high pressure pressure port (14) is positioned at the sidewall of pressure pipe (1) and aperture, downside near pressure pipe (1) bottom.
4. the wind speed and pressure sensor for range hood according to Claims 2 or 3, it is characterized in that: described high pressure pressure port (14) towards gravity direction bottom port aperture more than away from the sidewall of gravity direction along aperture, aperture so that high pressure pressure port is regarded as in inverted V-shaped from the sidewall of pressure pipe length direction or inverted U or inverted trapezoidal.
5. the wind speed and pressure sensor for range hood according to claim 1, it is characterised in that: described high pressure pressure port (14) is provided with inwardly protruded interior guide portion away from the inner wall hole edge of gravity direction.
6. the wind speed and pressure sensor for range hood according to claim 1, it is characterised in that: described high pressure pressure port (14) is provided with near the outer cinclides edge of gravity direction can by the outer guide portion of greasy dirt diversion high pressure pressure port (14).
7. the wind speed and pressure sensor for range hood according to claim 6, it is characterised in that: described outer guide portion is the outer guide plate of the tube wall of inclined cut or outwardly convex.
8. the wind speed and pressure sensor for range hood as claimed in claim 1, it is characterized in that: described first pressure chamber (12) is provided with the first greasy dirt catch near the first pressure guiding pipe (21) place, described second pressure chamber (13) is provided with the second greasy dirt catch near the second pressure guiding pipe (22) place.
9. the wind speed and pressure sensor for range hood as claimed in claim 1, it is characterised in that: described wind speed and pressure sensor also includes the circuit control part that can obtain real-time wind speed V according to the signal that described pressure transducer (3) export.
10. the wind speed and pressure sensor for range hood as claimed in claim 9, it is characterized in that: described circuit control part includes 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) electrically connects with described pressure transducer (3) and rotational speed control module (6) respectively.
11. as claimed in claim 1 for the wind speed and pressure sensor of range hood, it is characterized in that: described low pressure pressure port is arranged on the sidewall of described pressure pipe, and the most path of described low pressure pressure port is be more than or equal to 3mm, and the area of described low pressure pressure port is be more than or equal to 9mm2。
12. a range hood, including blower fan, outlet housing (7) with the air outlet place being positioned at described blower fan, it is characterized in that: described outlet housing (7) is provided with wind speed and pressure sensor as claimed in claim 10, 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.
13. a range hood; including cigarette casing body and the blower fan being arranged in cigarette casing body; it is characterized in that: the flue in described air inlet front or the flue at air outlet rear are provided with wind speed and pressure sensor as claimed in claim 1; the pressure pipe (1) of described wind speed and pressure sensor is horizontally set in flue; described first pressure guiding pipe (21), the second pressure guiding pipe (22), pressure transducer (3) and circuit control part are arranged in a protective cover, and this protective cover is arranged in cigarette casing body.
14. a range hood, comprise the pipe being connected with common flue, it is characterized in that: described pipe is provided with wind speed and pressure sensor as claimed in claim 1, the pressure pipe (1) of described wind speed and pressure sensor is horizontally set in described pipe, and described first pressure guiding pipe (21), the second pressure guiding pipe (22), pressure transducer (3) and circuit control part are positioned at described pipe (7) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620028571.0U CN205351443U (en) | 2016-01-13 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620028571.0U CN205351443U (en) | 2016-01-13 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
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| Publication Number | Publication Date |
|---|---|
| CN205351443U true CN205351443U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620028571.0U Active CN205351443U (en) | 2016-01-13 | 2016-01-13 | A air speed and pressure sensor and range hood for range hood |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2016
- 2016-01-13 CN CN201620028571.0U patent/CN205351443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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