CN105485742A - Air speed and air pressure sensor for extractor hood and extractor hood - Google Patents
Air speed and air pressure sensor for extractor hood and extractor hood Download PDFInfo
- Publication number
- CN105485742A CN105485742A CN201610019728.8A CN201610019728A CN105485742A CN 105485742 A CN105485742 A CN 105485742A CN 201610019728 A CN201610019728 A CN 201610019728A CN 105485742 A CN105485742 A CN 105485742A
- Authority
- CN
- China
- Prior art keywords
- pressure
- wind speed
- pipe
- pressure sensor
- range hood
- 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.)
- Granted
Links
Classifications
-
- 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
Landscapes
- 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 an air speed and air pressure sensor for an extractor hood. The air speed and air pressure sensor comprises a sampling part. The sampling part comprises a pressure tapping pipe, a first pressure guiding pipe, a second pressure guiding pipe and a pressure sensor, wherein the first pressure guiding pipe and the second pressure guiding pipe are arranged at the ends of the pressure tapping pipe. The first pressure guiding pipe and the second pressure guiding pipe are connected to the pressure sensor through guide pipes respectively. A partition plate is arranged in the pressure tapping pipe and divides the interior of the pressure tapping pipe into a first pressure tapping cavity and a second pressure tapping cavity. The first pressure tapping cavity faces the air flow, and the second pressure tapping cavity is far away from the air flow. The first pressure guiding pipe is communicated with the interior of the first pressure tapping cavity, and the second pressure guiding pipe is communicated with the interior of the second pressure tapping cavity. The pressure tapping pipe (1) is provided with high-pressure pressure tapping holes (14) communicated with the interior of the first pressure tapping cavity (12), and the pressure tapping pipe (1) is provided with low-pressure pressure tapping holes (15) communicated with the interior of the second pressure tapping cavity (13). The air speed and air pressure sensor is characterized in that the hole centers of the high-pressure pressure tapping holes (14) are located on the side wall of the pressure tapping pipe (1), and orifices on the lower sides of the high-pressure pressure tapping holes (14) are close to the bottom of the pressure tapping pipe (1).
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 reduce wind speed when oil smoke concentration is low, can electric energy be saved, 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, then be not suitable for the working environment of range hood, because 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, makes pressure pipe cisco unity malfunction, 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 problem to be solved by this invention is for above-mentioned problems of the prior art, provides a kind of and detects the not easily blocked wind speed and pressure sensor for range hood of timely convenience, high pressure pressure port.
Second technical problem 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 problem 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 problem 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 sensor, described first pressure guiding pipe and the second pressure guiding pipe respectively by tubes connection to described pressure sensor; 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; Described pressure pipe is provided with and the high pressure pressure port be communicated with in the first pressure chamber, described pressure pipe be provided be communicated with in the second pressure chamber have low pressure pressure port, it is characterized in that: the hole heart of described high pressure pressure port is positioned at the sidewall of pressure pipe and aperture, downside flushes bottom pressure pipe or with bottom pressure pipe.
As improvement, described high pressure pressure port is greater than the aperture away from gravity direction towards the aperture of gravity direction, thus makes high pressure pressure port regard as in inverted V-shaped or inverted U or inverted trapezoidal from the sidewall of pressure pipe length direction.
For avoiding greasy dirt to block high pressure pressure port further, described high pressure pressure port is provided with guide portion in inwardly protruding away from the inner wall hole edge of gravity direction, and this interior guide portion can by greasy dirt diversion high pressure pressure port.
For avoiding greasy dirt to block high pressure pressure port further, described high pressure pressure port can by the outer guide portion of greasy dirt diversion high pressure pressure port along being provided with near the outer cinclides of gravity direction.
Described outer guide portion can be the tube wall of inclined cut or the outer guide plate of outwardly convex.
Because low pressure pressure port is communicated with the second pressure chamber, 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 can not be blocked by greasy dirt.
In order to ensure the sampling precision of sampling section, described pressure pipe and described high pressure pressure port are interspersed.
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, also can flow backwards from the first pressure guiding pipe and the second pressure guiding pipe even if there is greasy dirt to accumulate.
Improve, described dividing plate is the low structures in middle high both sides again.
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.
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 comprises the circuit control part that the signal that can export according to described pressure sensor carries out the rotation speed of fan of lampblack absorber controlling in real time.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 sensor and rotational speed control module respectively, thus the real time value that pressure sensor 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 first technical scheme that above-mentioned second technical problem 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 sensor and circuit control part are positioned at outside described outlet housing.
The present invention solves the second technical scheme that above-mentioned second technical problem adopt: a kind of range hood; comprise cigarette engine housing and be arranged on the blower fan in cigarette engine housing; 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 sensor and circuit control part are arranged in a protective cover, and this protective cover is arranged in cigarette engine housing.
The present invention solves the third technical scheme that above-mentioned second technical problem adopt: a kind of range hood, comprise the pipe be 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 sensor) and circuit control part be positioned at outside described pipe.
The present invention solves the first technical scheme that above-mentioned 3rd technical problem adopt: a kind of rotation speed of fan self_adaptive adjusting method of range hood, it is characterized in that: the circuit control part of wind speed and pressure sensor is connected with the blower fan of range hood, then control rotation speed of fan according to following step:
1), open described range hood, described blower fan runs under appointment n gear;
2), by the real-time wind speed of described wind speed and pressure Sensor monitoring, by described circuit control part by real-time wind speed 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).
The present invention solves the second technical scheme that above-mentioned 3rd technical problem adopt: a kind of rotation speed of fan self_adaptive adjusting method of range hood, it is characterized in that: the circuit control part of wind speed and pressure sensor is connected with the master board of range hood, the rotating speed of described blower fan is controlled by the master board of range hood, then controls rotation speed of fan according to following step:
1) after, the blower fan of described range hood is unlocked;
2), by the real-time wind speed of described wind speed and pressure Sensor monitoring, and wind speed is 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 %*V
n0relatively, X% is preset value, V
n0for the rotating speed 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 is made to keep current rotating speed; If V is less than X%*V
n0, then the master board of lampblack absorber controls described blower fan increases rotating speed, after this repeats step 3).
Compared with prior art, the invention has the advantages that: the hole heart of the high pressure pressure port of wind speed and pressure sensor be positioned at the sidewall of pressure pipe and aperture, downside bottom pressure pipe, 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, wall attachment effect can be conveniently utilized to make greasy dirt easily be easy to flow out from the edge, bottom sides aperture of high pressure pressure port; In further scheme, described high pressure pressure port is greater than the aperture away from gravity direction towards the aperture of gravity direction, thus make high pressure pressure port be inverted V-shaped or inverted U or inverted trapezoidal from the one-tenth perpendicular to gravity direction, can also make not ooze and the greasy dirt hung hangs on the tube wall at edge, high pressure pressure port aperture.
Accompanying drawing explanation
Fig. 1 is the sampling section schematic diagram of wind speed wind pressure sensor in the embodiment of the present invention one;
Fig. 2 is the sectional view of the pressure pipe of wind speed wind pressure sensor in the embodiment of the present invention 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 the embodiment of the present invention one;
Fig. 7 is the schematic diagram that application of the present invention 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 invention;
Fig. 9 is the wind speed back pressure graph of relation of the first duty of range hood of the present invention;
Figure 10 is the wind speed back pressure graph of relation of range hood the second duty of the present invention;
Figure 11 is the wind speed back pressure graph of relation of the third duty of range hood of the present invention.
Detailed description of the invention
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 sensor 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 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 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, first pressure guiding pipe 21 and the second pressure guiding pipe 22 are guided out the air-flow of different pressures, pressure sensor 3 can obtain above-mentioned two different stream pressure values, and circuit control part then can record wind speed by the pressure reduction of two different stream pressure values.The principle of above-mentioned pressure pipe 1, pressure sensor 3 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.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, greasy dirt can be avoided to block the first pressure guiding pipe, the second pressure guiding pipe conduit even below, shown in Figure 3.
For the working environment making pressure pipe 1 be applicable to range hood, high pressure pressure port 14 is not easily blocked by greasy dirt, the present embodiment mesohigh pressure port 14 entirety is opened on the sidewall of pressure pipe 1, namely the hole heart of described high pressure pressure port 14 be positioned at the sidewall of pressure pipe 1 and aperture, downside bottom pressure pipe 1, high pressure pressure port 14 can also be made simultaneously to be greater than the upper hole oral pore footpath away from gravity direction towards the bottom part aperture diameter of gravity direction, thus to make high pressure pressure port 14 regard as in inverted V-shaped or inverted U or inverted trapezoidal from the sidewall of pressure pipe length direction; In this case, be 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, all can reach high pressure pressure port 14 not easily by object that greasy dirt blocks.
In the present embodiment, high pressure pressure port 14 away from the inner wall hole of gravity direction along being provided with inwardly protruding and can by guide portion 18 in greasy dirt diversion high pressure pressure port 14, shown in Fig. 2 and Fig. 5; Outer cinclides near gravity direction can by the outer guide portion 19 of greasy dirt diversion high pressure pressure port 14 along being provided with, the present embodiment China and foreign countries guide portion 19 is the tube wall of inclined cut, shown in Fig. 1,4, outer guide portion 19 by greasy dirt diversion high pressure pressure port, can make greasy dirt drip and hangs on the tube wall of 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, and namely not overlapping with high pressure pressure port 14 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 are connected to pressure sensor 3 respectively by the first conduit 41 and the second conduit 42, the pressure reduction that pressure sensor 3 exports according to two pressure guiding pipes, 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. 6, in addition, wind speed and pressure sensor also comprises the circuit control part that the signal that can export according to described pressure sensor 3 carries out the rotation speed of fan of lampblack absorber controlling in real time, this circuit control part, comprise main control module 5 and rotational speed control module 6, can with reference to disclosed in the patent document in background technology, rotational speed control module 5 controls and changes the motor speed of the blower fan of range hood, main control module 5 is electrically connected with pressure sensor 3, the real time value detected by pressure sensor 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. 7, 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 sensor 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 invention, pressure pipe 1 also can be horizontally set in the pipe that is connected with common flue, and the first pressure guiding pipe 21, second pressure guiding pipe 22, pressure sensor 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 invention also can directly prevent in lampblack absorber enclosure interior, on the flue in air inlet front or the flue at air outlet rear; Pressure pipe 1 by wind speed and pressure sensor is horizontally set in flue, and described first pressure guiding pipe 21, second pressure guiding pipe 22, pressure sensor 3 and circuit control part are arranged in a protective cover, then are arranged in cigarette engine housing by this protective cover.
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. 8, the circuit control part of wind speed and pressure sensor be connected with the blower fan of range hood, the control method of blower fan Automatic adjusument 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. 9, 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, operating 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 Figure 10, 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, 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 greater than A point, and after this range hood just remains on gear 3 and works.
See Figure 11, 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, 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 greater than A point.
If wind speed and pressure sensor does not comprise the circuit control part that the signal that can export according to described pressure sensor 3 carries out the rotation speed of fan of lampblack absorber controlling in real time, also wind speed and pressure sensor can be connected with the master board of range hood, and the rotating speed of existing blower fan is 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 real-time wind speed of described wind speed and pressure Sensor monitoring, and wind speed is 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 %*V
n0relatively, X% is preset value, V
n0for the rotating speed 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 is made to keep current rotating speed; If V is less than X%*V
n0, then the master board of lampblack absorber controls described blower fan increases rotating speed, after this repeats step 3).
Claims (15)
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 sensor (3), described first pressure guiding pipe (21) and the second pressure guiding pipe (22) respectively by tubes connection to described pressure sensor (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); Described pressure pipe (1) is provided with and the high pressure pressure port (14) be communicated with in the first pressure chamber (12), described pressure pipe (1) be provided with is communicated with in the second pressure chamber (13) have low pressure pressure port (15), it is characterized in that: the hole heart of described high pressure pressure port (14) be positioned at the sidewall of pressure pipe (1) and aperture, downside bottom pressure pipe (1).
2. the wind speed and pressure sensor for range hood according to claim 1, it is characterized in that: described high pressure pressure port (14) is greater than the aperture away from gravity direction towards the aperture of gravity direction, thus make high pressure pressure port regard as in inverted V-shaped or inverted U or inverted trapezoidal from the sidewall of pressure pipe length direction.
3. the wind speed and pressure sensor for range hood according to claim 1, is characterized 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.
4. the wind speed and pressure sensor for range hood according to claim 1, is characterized in that: described high pressure pressure port (14) can by the outer guide portion of greasy dirt diversion high pressure pressure port (14) along being provided with near the outer cinclides of gravity direction.
5. the wind speed and pressure sensor for range hood according to claim 4, is characterized in that: described outer guide portion is the tube wall of inclined cut or the outer guide plate of outwardly convex.
6., as claimed in claim 1 for the wind speed and pressure sensor of range hood, it is characterized in that: low pressure pressure port is arranged on the sidewall of described pressure pipe, be interspersed with described high pressure pressure port.
7., 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.
8. as claimed in claim 1 for the wind speed and pressure sensor of range hood, 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. as the wind speed and pressure sensor for range hood in right 1 ~ 8 as described in any one claim, it 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 sensor (3) obtains real-time wind speed V.
10. as claimed in claim 9 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 sensor (3) and rotational speed control module (6) respectively.
11. 1 kinds of range hoods, 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 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 sensor (3) and circuit control part are positioned at described outlet housing (7) outward.
12. 1 kinds of range hoods; comprise cigarette engine housing and be arranged on the blower fan in cigarette engine housing; 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 sensor (3) and circuit control part are arranged in a protective cover, and this protective cover is arranged in cigarette engine housing.
13. 1 kinds of range hoods, comprise the pipe be 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 sensor (3) and circuit control part are positioned at described pipe (7) outward.
The rotation speed of fan self_adaptive adjusting method of 14. 1 kinds of range hoods as claimed in claim 11, it is characterized in that: the circuit control part of wind speed and pressure sensor be connected with the blower fan of range hood, the circuit control part of wind speed and pressure sensor controls rotation speed of fan according to following step:
1), open described range hood, described blower fan runs under appointment n gear;
2), by the real-time wind speed of described wind speed and pressure Sensor monitoring, by described circuit control part by real-time wind speed 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).
The rotation speed of fan self_adaptive adjusting method of 15. 1 kinds of range hoods as described in claim 11 or 12, it is characterized in that: wind speed and pressure sensor is connected with the master board of range hood, the rotating speed of described blower fan is controlled by the master board of range hood, and master board controls rotation speed of fan according to following step:
1) after, the blower fan of described range hood is unlocked;
2), by the real-time wind speed of described wind speed and pressure Sensor monitoring, and wind speed is 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 %*V
n0relatively, X% is preset value, V
n0for the rotating speed 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 is made to keep current rotating speed; If V is less than X%*V
n0, then the master board of lampblack absorber controls described blower fan increases rotating speed, after this repeats step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019728.8A CN105485742B (en) | 2016-01-13 | 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 |
|---|---|---|---|
| CN201610019728.8A CN105485742B (en) | 2016-01-13 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485742A true CN105485742A (en) | 2016-04-13 |
| CN105485742B CN105485742B (en) | 2018-02-02 |
Family
ID=55672896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019728.8A Active CN105485742B (en) | 2016-01-13 | 2016-01-13 | Wind speed and pressure sensor and range hood for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105485742B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152218A (en) * | 2016-08-19 | 2016-11-23 | 宁波方太厨具有限公司 | A kind of range hood with Flow-rate adjustment and flow control methods thereof |
| CN113324269A (en) * | 2021-06-28 | 2021-08-31 | 火星人厨具股份有限公司 | Automatic wind power adjusting device and method for kitchen range hood |
| CN114018775A (en) * | 2021-11-04 | 2022-02-08 | 无锡锐丰源环境科技有限公司 | Online monitoring device for mass concentration of oil smoke particles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515840A (en) * | 1995-02-24 | 1996-05-14 | Jang; Sun-Sing | Fume exhausting device |
| 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 |
| CN205351444U (en) * | 2016-01-13 | 2016-06-29 | 宁波方太厨具有限公司 | A air speed and pressure sensor and range hood for range hood |
-
2016
- 2016-01-13 CN CN201610019728.8A patent/CN105485742B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515840A (en) * | 1995-02-24 | 1996-05-14 | Jang; Sun-Sing | Fume exhausting device |
| 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 |
| CN205351444U (en) * | 2016-01-13 | 2016-06-29 | 宁波方太厨具有限公司 | A air speed and pressure sensor and range hood for range hood |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152218A (en) * | 2016-08-19 | 2016-11-23 | 宁波方太厨具有限公司 | A kind of range hood with Flow-rate adjustment and flow control methods thereof |
| CN106152218B (en) * | 2016-08-19 | 2019-03-08 | 宁波方太厨具有限公司 | A kind of range hood and its flow control methods adjusted with flow |
| CN113324269A (en) * | 2021-06-28 | 2021-08-31 | 火星人厨具股份有限公司 | Automatic wind power adjusting device and method for kitchen range hood |
| CN114018775A (en) * | 2021-11-04 | 2022-02-08 | 无锡锐丰源环境科技有限公司 | Online monitoring device for mass concentration of oil smoke particles |
| CN114018775B (en) * | 2021-11-04 | 2024-01-12 | 无锡锐丰源环境科技有限公司 | Online monitoring device for oil smoke particle mass concentration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485742B (en) | 2018-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105546603A (en) | Range hood and wind speed and wind pressure sensor for range hood | |
| CN104329708A (en) | Near suction type range hood | |
| CN110486773B (en) | Control method of range hood and range hood | |
| CN102589025A (en) | Fan speed adaptive regulation device of range hood and control method thereof | |
| CN112050270B (en) | Control method of range hood | |
| CN105485742A (en) | Air speed and air pressure sensor for extractor hood and extractor hood | |
| CN206320819U (en) | A kind of side extraction cooking fume extractor | |
| CN110274285B (en) | Building public flue smoke exhaust system and control method thereof | |
| CN108006732B (en) | Range hood with adjustable suction effect | |
| CN110220228A (en) | A kind of smoke machine cruise boosting method and kitchen ventilator | |
| CN110375344B (en) | Building flue kitchen oil fume purification system and control method | |
| CN205227466U (en) | Wind pressure control type range hood | |
| CN205351444U (en) | A air speed and pressure sensor and range hood for range hood | |
| CN107975846B (en) | Stepless speed regulating fume exhaust fan | |
| CN109838863A (en) | A kind of dynamic indoor pressure regulating system | |
| CN208253672U (en) | Range hood with adjustable negative pressure area | |
| CN111853881A (en) | Method for adjusting control strategy of range hood and range hood | |
| CN105465864A (en) | Air speed and air pressure sensor for range hood and range hood | |
| CN205351443U (en) | A air speed and pressure sensor and range hood for range hood | |
| CN107655048A (en) | Range hood and constant air volume adjusting method and system thereof | |
| EP2908057A2 (en) | Hood extractor | |
| CN112856509B (en) | Range hood and control method thereof | |
| CN110186088B (en) | Series double-fan type range hood and flow control method thereof | |
| CN210128389U (en) | Fume exhaust fan | |
| CN110906395B (en) | Control method of range hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |