CN105546603A - Range hood and wind speed and wind pressure sensor for range hood - Google Patents

Range hood and wind speed and wind pressure sensor for range hood Download PDF

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Publication number
CN105546603A
CN105546603A CN201610021592.4A CN201610021592A CN105546603A CN 105546603 A CN105546603 A CN 105546603A CN 201610021592 A CN201610021592 A CN 201610021592A CN 105546603 A CN105546603 A CN 105546603A
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CN
China
Prior art keywords
pressure
wind speed
pipe
range hood
pressure sensor
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Granted
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CN201610021592.4A
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Chinese (zh)
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CN105546603B (en
Inventor
高婷婷
徐钦龙
茅忠群
诸永定
刘戈
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN201510591838.7A priority Critical patent/CN105158504A/en
Priority to CN2015105918387 priority
Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201610021592.4A priority patent/CN105546603B/en
Publication of CN105546603A publication Critical patent/CN105546603A/en
Application granted granted Critical
Publication of CN105546603B publication Critical patent/CN105546603B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2021Arrangement or mounting of control or safety systems

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 part, wherein the sampling part comprises a pressure tapping pipe, a first pressure guide pipe, a second pressure guide pipe and a pressure sensor part; the first pressure guide pipe and the second pressure guide pipe are arranged at the end part of the pressure tapping pipe, and are connected to the pressure sensor part through conduits respectively; a partition plate is arranged in the pressure tapping pipe, and divides the pressure tapping pipe into a first pressure tapping cavity and a second pressure tapping cavity; the first pressure tapping cavity faces an air flow, while the second pressure tapping cavity is far from the air flow; the first pressure guide pipe is communicated with the first pressure tapping cavity; the second pressure guide pipe is communicated with the second pressure tapping cavity; high pressure tapping holes (14) communicated with the first pressure tapping cavity and low pressure tapping holes (15) communicated with the second pressure tapping cavity are formed in the pressure tapping pipe (1); the high pressure tapping holes (14) are positioned in the bottom of the pressure tapping pipe (1), and are inverted-V-shaped; the low pressure tapping holes (15) are positioned in the side wall of the pressure tapping pipe (1); and the low pressure tapping holes (15) and the high pressure tapping holes (14) are distributed in a staggered manner.

Description

For wind speed and pressure sensor and the range hood of range hood
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 detection timely and conveniently for the wind speed and pressure sensor of range hood.
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; 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.
The concrete structure that described high pressure pressure port is positioned at the bottom of described pressure pipe is: the hole heart of described high pressure pressure port is positioned at two side holes bottom pressure pipe and extends along the two side respectively to pressure pipe, thus makes high pressure pressure port entirety U-shaped.
Described high pressure pressure port is the concrete structure of inverted V-shaped: described high pressure pressure port is greater than along aperture, aperture on the sidewall away from gravity direction towards the bottom port aperture of gravity direction, thus high pressure pressure port is regarded as in inverted V-shaped from the pressure pipe sidewall direction perpendicular to gravity.
For avoiding greasy dirt to block 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 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; And 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.
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.
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 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 and common flue or the pipe that is connected without the exhaust opening of common flue building, 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, 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).
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 rotation speed of fan is constant; If V is less than X%*V n0, then the master board of lampblack absorber controls described blower fan rotation speed of fan is increased, and 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 from the bottom port edge of high pressure pressure port, and the greasy dirt that can also make not ooze and hang hangs on the tube wall at edge, high pressure pressure port aperture, thus makes high pressure pressure port 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; In further scheme, 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 speed and the sensitivity of range hood.
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, the hole heart of high pressure pressure port 14 is positioned at bottom pressure pipe 1 and two side holes extends along the two side respectively to pressure port 14, thus makes high pressure pressure port 14 entirety U-shaped, shown in Figure 2; And high pressure pressure port 14 is greater than along aperture, aperture on the sidewall away from gravity direction towards the bottom port aperture of gravity direction, thus high pressure pressure port is made to regard as in inverted V-shaped from the pressure pipe sidewall direction perpendicular to gravity, shown in Figure 1; The hole shape structure of this high pressure pressure port 14, wall attachment effect can be conveniently utilized to make greasy dirt easily be easy to flow out from the bottom port edge of high pressure pressure port, can also make not ooze and the greasy dirt hung hangs on the tube wall at edge, high pressure pressure port aperture, high pressure pressure port 14 is not easily blocked by greasy dirt.
In order to avoid greasy dirt to block high pressure pressure port 14 further, can 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, 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, and the present embodiment China and foreign countries guide portion 19 is the tube wall of inclined cut, shown in Fig. 1,4.
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 rotation speed of fan is constant; If V is less than X%*V n0, then the master board of lampblack absorber controls described blower fan rotation speed of fan is increased, and 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); 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. 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 (14) is positioned at pressure pipe (1) bottom and two side holes extends along the two side respectively to pressure pipe (1), thus makes high pressure pressure port (14) overall U-shaped.
3. the wind speed and pressure sensor for range hood according to claim 2, it is characterized in that: described high pressure pressure port (14) is greater than along aperture, aperture on the sidewall away from gravity direction towards the bottom port aperture of gravity direction, thus high pressure pressure port (14) is regarded as in inverted V-shaped from pressure pipe (1) sidewall direction perpendicular to gravity.
4. 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.
5. 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.
6. the wind speed and pressure sensor for range hood according to claim 5, is characterized in that: described outer guide portion is the tube wall of inclined cut or the outer guide plate of outwardly convex.
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. the wind speed and pressure sensor for range hood as described in right 1 or 8, 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.
9. as claimed in claim 8 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.
10. 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.
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 9, 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 and common flue or the pipe that is connected without the exhaust opening of common flue building, 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, 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).
The rotation speed of fan self_adaptive adjusting method of 15. 1 kinds of range hoods as described in claim 12 or 13, 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 rotation speed of fan is constant; If V is less than X%*V n0, then the master board of lampblack absorber controls described blower fan rotation speed of fan is increased, and after this repeats step 3).
CN201610021592.4A 2015-09-17 2016-01-13 Wind speed and pressure sensor and range hood for range hood Active CN105546603B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
CN105465860B (en) * 2015-12-25 2018-10-02 宁波方太厨具有限公司 A kind of range hood actual flow measuring device and its measurement method
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
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
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

Citations (6)

* Cited by examiner, † Cited by third party
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
CN102589025A (en) * 2012-02-17 2012-07-18 宁波方太厨具有限公司 Fan speed adaptive regulation device of range hood and control method thereof
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
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
CN205560899U (en) * 2015-09-17 2016-09-07 宁波方太厨具有限公司 A air speed and pressure sensor and range hood for range hood

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
CN102589025A (en) * 2012-02-17 2012-07-18 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
CN205560899U (en) * 2015-09-17 2016-09-07 宁波方太厨具有限公司 A air speed and pressure sensor and range hood for range hood

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