CN206055728U - The rotation speed of fan self-checking device of range hood - Google Patents
The rotation speed of fan self-checking device of range hood Download PDFInfo
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- CN206055728U CN206055728U CN201621098372.3U CN201621098372U CN206055728U CN 206055728 U CN206055728 U CN 206055728U CN 201621098372 U CN201621098372 U CN 201621098372U CN 206055728 U CN206055728 U CN 206055728U
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- range hood
- fan
- blower fan
- controller
- rotation speed
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Abstract
This utility model is related to a kind of rotation speed of fan self-checking device of range hood, gas pressure sensor, rotation speed of fan regulation circuit and the control key being connected including controller and with controller, there is on gas pressure sensor 2 malleation mouth and negative pressure mouth, malleation mouth is connected with the smoke discharging pipe of range hood by the first conduit, negative pressure mouth is connected with controller by the second conduit and the intracavity inter-connection of range hood, the holding wire of gas pressure sensor.Rotation speed of fan is adjusted circuit and is connected with controller and blower fan with the rotating speed according to the control command of controller regulation blower fan respectively.Control key is connected to be input into control command to controller with controller.The rotation speed of fan self-checking device of range hood in this utility model, using the pressure differential in pressure in range hood smoke discharging pipe and range hood inner chamber between pressure as Fan Regulation basis, the influence on system operation factor of blower fan, the more automatic speed regulation for realizing blower fan of science are considered.
Description
Technical field
This utility model is related to range hood technical field, and in particular to a kind of rotation speed of fan of range hood is automatically adjusted
Method.
Background technology
The blower fan of existing domestic cooking fume remover generally has multi gear rotating speed handoff functionality, switches over operation with manual key
Based on.During use, user can just go switching after often smelling greasy smell, add kitchen work complexity, and user is not often due to have
There is the time carry out speed governing in time, or forget to carry out speed governing, so as to cause the Consumer's Experience of range hood poor.
In order to solve aforesaid problem, the range hood with automatic speed regulating function, this kind of range hood are occurred in that therewith
Entirety can divide into two classes：A kind of is to detect that the oil smoke concentration size of range hood smoking port carries out the automatic tune of rotation speed of fan
Section, including detecting smokescope using Smoke Sensor and detecting smoking port temperature using temperature sensor, to perceive heating fire
Power, and then as the foundation of regulation rotation speed of fan；It is another kind of then be detection exhaust opening flue resistance size carry out rotation speed of fan
Automatically adjust, including by detecting that the modes such as the electric current and change in voltage of motor obtain exhaust opening flue resistance size, so as to make
To adjust the foundation of rotation speed of fan.But, individually any one method all can not control the standard of blower fan automatic speed regulation well
True property.For example, speed governing is carried out according to smoking port oil smoke concentration size individually, if smoking port oil smoke concentration is less, range hood
Bottom gear is operated in, if now in peak period of cooking, flue resistance is very big, be then likely to occur that oil smoke in flue pours in down a chimney shows
As；Conversely, individually carrying out speed governing according to flue resistance size, if flue resistance is less, range hood is operated in bottom gear, this
Shi Ruguo user just in quick-fried, produces very big oil smoke, then oil smoke spilling can not enough occur because of suction.
Utility model content
First technical problem to be solved in the utility model be provide one kind for above-mentioned prior art can not only
Consider that flue resistance and oil smoke concentration factor affect simultaneously, while considering that fan performance changing factor is affected with timely, science
Realize the rotation speed of fan self-checking device of the range hood of fan speed regulation.
This utility model solve the technical scheme that adopted of above-mentioned technical problem for：A kind of rotation speed of fan of range hood is certainly
Dynamic adjusting means, is connected to control blower fan work with blower fan, it is characterised in that：Including gas pressure sensor, controller, blower fan
Rotational speed regulation circuit and control key；
There is on the gas pressure sensor malleation mouth and negative pressure mouth, the malleation mouth passes through the first conduit and fume-exhausting
The smoke discharging pipe of machine is connected, and the negative pressure mouth is by the second conduit and the intracavity inter-connection of range hood, the atmospheric pressure
The holding wire of sensor is connected with the controller；
The rotation speed of fan is adjusted circuit and is connected respectively to be ordered according to the control of the controller with controller and blower fan
Order adjusts the rotating speed of blower fan；
The control key is connected to be input into control command in the controller with the controller.
In order to reduce the disturbance fluctuation that external interference factor is caused to pressure signal, the gas pressure sensor and control
Filter circuit is also associated between device.
The working condition of range hood is shown for convenience, also includes the display being connected with the controller.
Easily, the control key is included for opening and closing the on ＆ off switch of range hood, for realizing range hood
Rotation speed of fan manual adjustment mode and automatically adjust the mode tuning key of pattern switching, for adjusting mould manually in rotation speed of fan
Multiple gear keys of rotation speed of fan are adjusted under formula.
Compared with prior art, the utility model has the advantage of：The rotation speed of fan of the range hood in this utility model
Self-checking device, by the detection to pressure in pressure in range hood smoke discharging pipe and range hood inner chamber, realizes oil suction
Pressure differential in cigarette machine smoke discharging pipe in pressure and range hood inner chamber between pressure as Fan Regulation basis, i.e., from fume-exhausting
The influence on system operation factor of blower fan, the more automatic speed regulation for realizing blower fan of science have been considered with two aspects of mist extractor,
Improve the effect of the fume-exhausting and mist extractor of range hood.
Description of the drawings
Fig. 1 is the structural representation of the Fan Regulation device of range hood in this utility model embodiment.
Fig. 2 is the structured flowchart of the Fan Regulation device of range hood in this utility model embodiment.
Fig. 3 is the flow chart of the rotation speed of fan Automatic adjustment method of range hood in this utility model embodiment.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As depicted in figs. 1 and 2, range hood generally includes a shell 100, has smoke inlet and exhaust opening on shell 100,
Exhaust opening connection smoke discharging pipe 101 on shell 100.Be provided with blower fan 1 in shell 100, blower fan 1 respectively with smoke inlet and smoke evacuation
Mouthful it is connected, when blower fan 1 works, the oil smoke in from smoke inlet into range hood cavity can be expelled to smoke evacuation from exhaust opening
In pipeline 101, and smoke discharging pipe 101 is then connected with outside common flue.
The Fan Regulation device of the range hood in the present embodiment is also disposed in the housing of range hood, when in use,
The Fan Regulation device of the range hood is connected with the blower fan 1 in range hood with cooperating, and then is realized to 1 turn of blower fan
The regulation control of speed.
The Fan Regulation device of the range hood includes that gas pressure sensor 2, controller 3, rotation speed of fan adjust circuit
4th, control key 5, display 6 and filter circuit 7.
Wherein gas pressure sensor 2, should using less pressure difference sensor is affected by ambient humidity, temperature and oil smoke
There is on gas pressure sensor 2 malleation mouth and negative pressure mouth, the malleation mouth is by the first conduit 21 and the smoke exhaust pipe of range hood
Road 101 is connected, and in the present embodiment, first conduit 21 is connected close to the connection of range hood exhaust opening and smoke discharging pipe 101
Place.Then by the second conduit 22 and the intracavity inter-connection of range hood, second conduit 22 can both be connected to blower fan to negative pressure mouth
Install in spiral case, be also attached in the cavity between spiral case and shell.The holding wire 23 of gas pressure sensor 2 is by filtering
Circuit 7 is connected with controller 3.Gas pressure sensor 2 can detect the pressure signal and negative pressure mouth of malleation mouth respectively
Pressure signal, and then be sent to after pressure signal is processed after filtering in controller 3, malleation mouth is calculated using controller 3 and bear
Pressure difference value between pressure mouth.
Controller 3 in the present embodiment is i.e. using products such as existing such as single-chip microcomputers.
Rotation speed of fan adjusts circuit 4 and then adjusts circuit 4 using existing rotation speed of fan, and the rotation speed of fan adjusts 4 points of circuit
It is not connected with controller 3 and blower fan 1, when in use, the rotation speed of fan adjusts the control command that circuit 4 receives controller 3, real
Now motor speed is adjusted and is controlled.
6 controller 3 of display is connected, and according to the data of the transmission of controller 3, range hood can be shown on display 6
Various working conditions.
Control key 5 is connected to be input into control command in controller 3 with controller 3.In order to easy to operate and attractive in appearance aobvious
Show that device 6 and control key 5 can be wholely set as touch screen.
Control key 5 in the present embodiment is included for opening and closing the on ＆ off switch 51 of range hood, for realizing oil suction
The 1 rotating speed manual adjustment mode of blower fan of cigarette machine and automatically adjust the mode tuning key 52 of pattern switching, in 1 rotating speed handss of blower fan
Multiple gear keys 53 of 1 rotating speed of blower fan are adjusted under dynamic shaping modes.When in use, after Operation switch key 51 opens range hood,
Then operator scheme adjusting key 52, after adjusting to manual mode, can pass through to operate multiple gear keys 53 to realize 1 turn of blower fan
The manual regulation of speed, controller 3 receive being operated according to corresponding rotating speed for 53 signal control blower fan 1 of gear key, so then
Realize the traditional manual operation mode of range hood.If operation operator scheme adjusting key 52 adjusts range hood to blower fan
1 rotating speed automatically adjusts pattern, then realize automatically adjusting for blower fan 1 by the following method.
As shown in figure 3, the rotation speed of fan Automatic adjustment method of range hood, comprises the following steps：
Step 1, initialization；
Following initialization definitions are carried out in controller 3；
Multiple blower fan work grades for corresponding to different rotating speeds respectively are defined, according to rotating speed order from small to large, fanman
Make grade and be defined as L successively1、L2、L3、……、Lm、……、Ln, wherein n be natural number, 1≤m≤n；
P=Pout- Pin, wherein P represents the pressure difference of range hood, PoutRepresent quiet in range hood smoke discharging pipe 101
Pressure value, Pout>=0, PinStatic pressure in expression range hood inner chamber, Pin≤0；
R=[R1、R2、R3、……、Rm、……、Rn], Rm=(MinPm- Pm)/MinP, wherein MinP ＞ P0, R is blower fan
Hydraulic performance decline ratio value, RmIt is blower fan 1 in blower fan work grade LmFan performance down ratio value under state, MinPmIt is to inhale
Static pressure in smoke exhaust pipe of range hood road 101 is 0, and blower fan 1 is according to blower fan work grade LmWith normal performance working condition
Under range hood pressure difference absolute value, PmIt is blower fan 1 according to blower fan work grade LmThe actual pressure differential of range hood during work
Value；
Define multiple hydraulic performance decline proportion threshold value scope [MinRj,MaxRj], j is natural number, MinRjRepresent j-th decline
Fan performance down ratio value minima, MaxR in the range of proportion threshold valuejRepresent j-th down ratio threshold range inner blower
Can down ratio value maximum；
It is when defining blower fan 1 according to level works such as each blower fan works, corresponding in different performance down ratio threshold range
Fan performance adjustment factor inquiry table { K1,K2,K3,……,Km,……,Kn, Km=[Km1,Km2,Km3,……,Kmj], wherein Km
Represent blower fan 1 according to blower fan work grade LmDuring work, in different performance down ratio threshold range, corresponding fan performance is adjusted
Section coefficient lookup table, KmjRepresent blower fan 1 according to blower fan work grade LmIn hydraulic performance decline proportion threshold value scope [MinR during workj,
MaxRj] in corresponding fan performance adjustment factor inquiry table；Fan performance adjustment factor inquiry table in this enforcement can be compareed
Fan performance down ratio value is calculated and is obtained, it is also possible to obtained according to test of many times, while according to different control accuracies, Km1,
Km2,Km3,……,KmjDifferent value can be taken, it is also possible to take identical value；
For each blower fan work grade, fan performance adjustment factor initial value K=1 is defined；
Define the corresponding threshold pressure differential scope [K of each blower fan work gradei*MinPi,Ki*MaxPi], 1≤i≤n；KiRepresent
Blower fan 1 is according to blower fan work grade LiDuring work, in different performance down ratio threshold range, corresponding fan performance adjusts system
Number；MinPiRepresent the pressure reduction minima of range hood in the range of i-th threshold pressure differential, MaxPiRepresent i-th threshold pressure differential scope
The pressure reduction maximum of interior range hood；
Define unit timing interval T, blower fan automatic speed regulation number of times upper limit value Mmax, blower fan automatic speed regulation number of times M, frequently adjust
Speed mark F；
Define fan performance down ratio lower threshold MIN_R；
Step 2, Operation switch key 51, controller 3 then control range hood and must electrically activate, now, blower fan in controller 3
Energy adjustment factor is set to initial value K automaticallym=1, blower fan automatic speed regulation number of times is set to initial value M=0, and frequent speed governing mark sets to 0,
That is F=0；
Operator scheme adjusting key 52, adjusts to 1 rotating speed of blower fan and automatically adjusts pattern；
According to the setting in controller 3, blower fan work grade L of the 3 controlled motor rotational speed regulation circuit of controller to setm
The blower fan 1 in range hood is opened in corresponding rotating speed control, is arranged with minimum blower fan work grade L in the present embodiment1Open and inhale
Blower fan 1 in lampblack absorber；
After blower fan 1 starts, then timing is carried out to the working time of blower fan 1；
In pressure signal and range hood at step 3,2 Real-time Collection range hood exhaust opening of gas pressure sensor
Pressure signal in chamber, and the pressure signal of collection is sent in controller 3；
Step 4, the pressure signal to the collection of gas pressure sensor 2 are filtered process to reduce interference factor to signal
The pressure signal that gas pressure sensor 2 is gathered is converted into air pressure Value Data and then is calculated and obtained by the impact of accuracy, controller
Take malleation value P at range hood exhaust opening+And negative pressure value P in range hood inner chamber-, and then calculate the reality of range hood
When pressure difference Pm=P+- P-；
Step 5, according to the real-time pressure difference P of range hoodm, calculate blower fan work grade LmUnder the conditions of fan performance decline
Ratio value Rm, so as to whether the service behaviour for judging blower fan 1 declines；
If it is not, then the current fan performance adjustment factor of holding is constant；
If it is, obtaining current wind according to hydraulic performance decline proportion threshold value scope and fan performance adjustment factor inquiry table
Machine property regulation COEFFICIENT Kmj, and then correct fan performance adjustment factor Km=Kmj；Compare R simultaneouslymAnd MIN_R, if Rm＜
MIN_R, then by controller 3 by clean prompting information transmission to display 6, to point out to clean range hood；
Step 6, corresponding threshold pressure differential scope [K is obtained according to the current adjustment factor of blower fan 1m*MinPm,Km*
MaxPm], compare Pm、Km*MinPm、Km*MaxPmSize；
If Km*MinPm≤Pm≤Km*MaxPm, then uncomfortable rectification campaign machine job class, the control blower fan 1 of corresponding controllers 3 are pressed
According to former rotating speed operation work；
If Pm＜ Km*MinPm, then judge whether current blower fan work grade is L1, if it is, keeping current wind
Machine job class, corresponding controllers 3 control blower fan 1 according to former rotating speed operation work, if otherwise adjust blower fan work grade being
Lm-1, corresponding controllers 3 export new 1 speed controling signal of blower fan to blower fan rotational speed regulation circuit 4, and rotation speed of fan adjusts circuit 4
The adjustment of rotational speed for controlling blower fan 1 drops to L for blower fan work gradem-1Corresponding rotating speed；Blower fan automatic speed regulation number of times M adds simultaneously
1；
If Pm＞ Km*MaxPm, then judge whether current blower fan work grade is Ln, if it is, keeping current wind
Machine job class, corresponding controllers 3 control blower fan 1 according to former rotating speed operation work, if otherwise adjusted in blower fan work grade
It is upgraded to Lm+1, corresponding controllers 3 export new 1 speed controling signal of blower fan to blower fan rotational speed regulation circuit 4, and rotation speed of fan is adjusted
It is that blower fan work grade is L that circuit 4 controls the adjustment of rotational speed of blower fan 1m+1Corresponding rotating speed, while blower fan automatic speed regulation number of times M adds
1；
Judge each unit timing interval T inner blower automatic speed regulation number of times M whether more than Mmax；
If it does, judging the frequent speed governing of blower fan, frequent speed governing mark F puts 1, i.e. F=1, as F=1, in the unit meter
When interval T range in can only carry out blower fan work grade and rise adjusting；
If not less than, judging that the situation of frequent speed governing does not occur in blower fan, blower fan (1) can carry out blower fan work grade
Rise to adjust and can also carry out the decline regulation of blower fan work grade；
After timing time reaches unit timing interval T, then speed governing number of times resets, and reenters next unit timing interval
The timing of T；
So circulation carries out step 3 to step 6 until controller 3 receives the cut out of the range hood of the input of on ＆ off switch 51
Signal, blower fan 1 quit work, range hood power-off.
The rotation speed of fan Automatic adjustment method of the range hood can in time, the automatic speed regulation for realizing blower fan 1 of science, greatly
The effect of fume exhaust and mist extractor is improve greatly, energy consumption is reduced on the basis of effective work efficiency is ensured.
Claims (4)
1. a kind of rotation speed of fan self-checking device of range hood, is connected with blower fan (1) to control blower fan (1) work, and which is special
Levy and be：Circuit (4) and control key (5) are adjusted including gas pressure sensor (2), controller (3), rotation speed of fan；
There is on the gas pressure sensor (2) malleation mouth and negative pressure mouth, the malleation mouth is by the first conduit (21) and suction
The smoke discharging pipe (101) of lampblack absorber is connected, and the negative pressure mouth passes through the intracavity inter-connection of the second conduit (22) and range hood,
The holding wire (23) of the gas pressure sensor (2) is connected with the controller (3)；
The rotation speed of fan is adjusted circuit (4) and is connected with according to the controller (3) with controller (3) and blower fan (1) respectively
Control command adjust blower fan (1) rotating speed；
The control key (5) is connected with the controller (3) with the input control command in the controller (3).
2. the rotation speed of fan self-checking device of range hood according to claim 1, it is characterised in that：The gas pressure
Filter circuit (7) is also associated between force transducer (2) and controller (3).
3. the rotation speed of fan self-checking device of range hood according to claim 1, it is characterised in that：Also include and institute
State the display (6) that controller (3) is connected.
4. the rotation speed of fan self-checking device of range hood according to claim 1, it is characterised in that：The control key
(5) include being adjusted for opening and closing the on ＆ off switch (51) of range hood, blower fan (1) rotating speed for realizing range hood manually
Section pattern and automatically adjust pattern switching mode tuning key (52), under blower fan (1) rotating speed manual adjustment mode adjust
Multiple gear keys (53) of blower fan (1) rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098372.3U CN206055728U (en) | 2016-09-30 | 2016-09-30 | The rotation speed of fan self-checking device of range hood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098372.3U CN206055728U (en) | 2016-09-30 | 2016-09-30 | The rotation speed of fan self-checking device of range hood |
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| Publication Number | Publication Date |
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| CN206055728U true CN206055728U (en) | 2017-03-29 |
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| CN201621098372.3U Active CN206055728U (en) | 2016-09-30 | 2016-09-30 | The rotation speed of fan self-checking device of range hood |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114608A (en) * | 2017-06-26 | 2019-01-01 | 博西华电器（江苏）有限公司 | Control method and kitchen ventilator for kitchen ventilator |
-
2016
- 2016-09-30 CN CN201621098372.3U patent/CN206055728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114608A (en) * | 2017-06-26 | 2019-01-01 | 博西华电器（江苏）有限公司 | Control method and kitchen ventilator for kitchen ventilator |
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