CN106123077B - A kind of range hood and its air quantity control method adjusted with air quantity - Google Patents
A kind of range hood and its air quantity control method adjusted with air quantity Download PDFInfo
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- CN106123077B CN106123077B CN201610704120.9A CN201610704120A CN106123077B CN 106123077 B CN106123077 B CN 106123077B CN 201610704120 A CN201610704120 A CN 201610704120A CN 106123077 B CN106123077 B CN 106123077B
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- Prior art keywords
- pressure sensor
- accessory fan
- range hood
- blade
- air quantity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
A kind of range hood adjusted with air quantity, including main air blower and smoke pipe, it is characterized by also including master controllers and the accessory fan being mounted on smoke pipe, first pressure sensor is installed in the face of blade of accessory fan, second pressure sensor is installed in the vacuum side of blade of accessory fan, the signal output end of first pressure sensor and second pressure sensor is used to be connected with the signal input part of master controller, and master controller is according to the motor speed from first pressure sensor and second pressure sensor received signal control accessory fan.The range hood is by installing pressure sensor in the face of blade of accessory fan and the back side, master controller adjusts the motor speed of accessory fan according to the signal of the pressure sensor on two sides, it is set to match automatically with range hood main air blower, maintain total blast volume can be more than normal exhaust fume range, to effectively improve smoke absorption effect.In addition, the air quantity control method of the range hood is adjusted, very convenient, regulating effect is good.
Description
Technical field
The present invention relates to a kind of range hoods, more particularly, to a kind of range hood and its Boiler pressure control adjusted with air quantity
Method.
Background technique
Common duct is since the switch conditions of other users range hood will affect resistance to flow output, so as to cause user side suction
The actual flow of kitchen ventilator constantly changes, or even the phenomenon that flue gas can not arranged occurs.Currently, the motor speed of many range hoods
Variation range is smaller, can not cope with harsh outlet regulating, so that feeling that smoke absorption effect is poor when user uses.Currently, existing
Have and disclose the various range hoods adjusted with air quantity in technology, such as 201310273983.1 (Granted publication of Patent No. ZL
Number be 103353136 B of CN) Chinese invention patent disclosed in " a kind of range hood with air quantity regulatory function and its
Control system and control method ", the control system of the range hood includes power module, motor drive module, system control mould
Block, wherein system control module includes main control chip, connect with sensor group from control chip and sensor group, main control chip, electric
Machine drive module is made of intelligent power module, motor drive ic, sampling and protection circuit, and sensor group detects range hood
Operating status is simultaneously input to main control chip, and main control chip determines that airflow value is sent to motor after judging range hood operating status
Drive module, so that direct current generator be driven to work.In the prior art cannot although above-mentioned control system and control method solve
The problem of comprehensively considering the influence of kitchen environment and common flue to smoke absorption effect, so that range hood had not only reduced noise but also saved
Can be environmentally friendly, but its control process is realized only by the revolving speed of the main air blower motor inside control range hood, air quantity tune
It is relatively poor to save effect.
Summary of the invention
First technical problem to be solved by this invention is for above-mentioned state of the art, and providing a kind of can will assist
The range hood adjusted with air quantity that the rotational speed regulation of blower extremely matches with range hood main air blower.
Second technical problem to be solved by this invention is to provide a kind of adjusting side for above-mentioned state of the art
Just, the air quantity control method of the range hood adjusted with air quantity of the blower total blast volume more than normal exhaust fume range is maintained.
The present invention solves technical solution used by above-mentioned first technical problem are as follows: the fume-exhausting adjusted with air quantity
Machine, including main air blower and the smoke pipe for being connected to main air blower air outlet, it is characterised in that: further include master controller and be mounted on described
Accessory fan on smoke pipe, the accessory fan are axial flow blower, are equipped with first in the face of blade of the accessory fan
Pressure sensor is equipped with second pressure sensor in the vacuum side of blade of the accessory fan, the first pressure sensor and
The signal output end of second pressure sensor be used to be connected with the signal input part of the master controller, the master controller according to
The motor speed of the accessory fan is controlled from first pressure sensor and second pressure sensor received signal.
Preferably, which further includes having the first reference voltage regulator and the second reference voltage regulator, first
The signal of comparator and the second comparator, the signal output end of the first pressure sensor and the first reference voltage regulator is defeated
Outlet is connected with the first input end of the first comparator, the second input terminal respectively, the signal of the second pressure sensor
The signal output end of output end and the second reference voltage regulator respectively with the first input end of second comparator, second defeated
Enter end to be connected, the output end of the output end of the first comparator and the second comparator is inputted with the signal of the master controller
End is connected.
Further preferably, the first pressure sensor and second pressure sensor are mounted on same blade.
Pressure sensor can there are many selections, it is preferable that the first pressure sensor and second pressure sensor
Using piezoelectricity sensor film or piezo-electric crystal or piezoelectric ceramic piece.
Further preferably, at least there are two simultaneously front and backs to be sequentially connected in series for the accessory fan.
Accessory fan can be there are many mounting structure, it is preferable that the accessory fan includes blower compatible with smoke pipe
Shell is equipped with the fixation bracket for being fixed on the wall, the both ends connection of the blower housing on the blower housing
On the corresponding ports of smoke pipe.
It is the Boiler pressure control side of the range hood that the present invention, which solves technical solution used by above-mentioned second technical problem,
Method includes process control as follows:
1., the pressure P of measured in advance range hood face of blade when keeping normal smoke evacuation flow1With the pressure of vacuum side of blade
P2Between minimum differntial pressure Δ P；
2., the ambient windstream variation in first pressure sensor and second pressure sensor sensing smoke pipe, and accordingly obtain
The pressure P of face of blade1With the pressure P of vacuum side of blade2；
3., P judged by master controller1-P2Difference and Δ P relationship；
If 4., P1-P2>=Δ P keeps the existing revolving speed of accessory fan motor or gear；
If 0 < P1-P2< Δ P improves revolving speed or gear by main controller controls accessory fan；
If P2-P1>=0, revolving speed perhaps gear or replacement accessory fan electricity are improved by main controller controls accessory fan
Machine.
Compared with the prior art, the advantages of the present invention are as follows: the range hoods by installing accessory fan on smoke pipe, and
Pressure sensor is installed in the face of blade of accessory fan and the back side, master controller can be according to the letter of the pressure sensor on two sides
Number the motor speed of accessory fan is adjusted, it is made to match automatically with range hood main air blower, maintains total blast volume can be just
More than normal exhaust fume range, to effectively improve smoke absorption effect.In addition, the air quantity control method adjusting of the range hood is very square
Just, regulating effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is that the embodiment of the present invention removes the structural schematic diagram after main air blower shell and accessory fan shell；
Fig. 3 is the smoke pipe decomposition diagram for being equipped with accessory fan of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the accessory fan of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another angle of accessory fan of the embodiment of the present invention；
Fig. 6 is the structural block diagram of the air quantity control method of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figures 1 to 5, the range hood adjusted with air quantity in the present embodiment includes main air blower 1, smoke pipe 2 and auxiliary
Helping blower 3, wherein smoke pipe 2 is connected to the air outlet of main air blower 1, and accessory fan 3 is axial flow blower and is serially connected on smoke pipe 2, this
In embodiment, there are two simultaneously front and backs to be sequentially connected in series for accessory fan 3.Accessory fan 3 includes blade 31, blower housing 32 and fixes
Bracket 33, the both ends of blower housing 32 are connected on the corresponding ports of smoke pipe 2, and blade 31 is set in blower housing 32, fixed branch
Frame 33 is mounted on blower housing 32, and when installation, fixed bracket 33 is fixed on the wall.In addition, since accessory fan is hidden in
In the furred ceiling of kitchen, therefore acoustical cotton lamp acoustic damping materials can be wrapped up outside blower housing 32, to reduce noise.
Each accessory fan 3 is equipped with first pressure sensor 5 in the front of wherein a piece of blade 31, in same blade
31 back side is equipped with second pressure sensor 6, and first pressure sensor 5 is used to incude the positive pressure of corresponding accessory fan 3
Power, second pressure sensor 6 is used to incude the pressure at corresponding 3 back side of accessory fan, when flow velocity difference in flue, assists wind
The pressure difference that 3 face of blade of machine and the back side are formed is also different.Pressure sensor can be answered there are many selection using voltage inductance
Film, piezo-electric crystal or piezoelectric ceramic piece.
As shown in fig. 6, the range hood in the present embodiment further includes master controller 4, the first reference voltage regulator 7,
Two reference voltage regulators 8, first comparator 9 and the second comparator 10.Wherein, the signal output end of first pressure sensor 5
With the signal output end of the first reference voltage regulator 7 respectively with the first input end of the first comparator 9, the second input terminal
It is connected, the signal output end of the signal output end of second pressure sensor 6 and the second reference voltage regulator 8 compares with second respectively
First input end, the second input terminal compared with device 10 are connected, and the output end of the output end of first comparator 9 and the second comparator 10 is equal
It is connected with the signal input part of master controller 4.
The air quantity control method of the range hood includes process control as follows:
1., the pressure P of measured in advance range hood face of blade when keeping normal smoke evacuation measurement1With the pressure of vacuum side of blade
P2Between minimum differntial pressure Δ P；
2., first pressure sensor 5 and second pressure sensor 6 incude the ambient windstream variation in smoke pipe, and it is mutually deserved
To the pressure P of face of blade1With the pressure P of vacuum side of blade2；
3., P judged by master controller 41-P2Difference and Δ P relationship；
If 4., P1-P2>=Δ P, that is, positive pressure are higher than backside pressure, it is believed that accessory fan effectively improves at this time
The smoke evacuation ability of range hood, therefore keep the existing revolving speed of accessory fan motor or gear；
If 0 < P1-P2< Δ P shows that flue outlet resistance ratios are larger at this time, and air-flow velocity is relatively low, and practical exhaust smoke level compares
Small, user side runs cigarette, just just to play the effect of accessory fan at this time, it is therefore desirable to pass through main controller controls accessory fan
Revolving speed or gear are improved, to enhance smoke evacuation ability.
If P2-P1>=0, mean that accessory fan becomes resistance at this time, is blown rotation, it is therefore desirable to pass through master controller
It controls accessory fan and improves revolving speed or gear.Certainly, at this time it is also likely to be accessory fan motor damage and leads to not rotate,
The motor of accessory fan is needed replacing, then correspondingly to adapt to the smoke evacuation of entire flue.
From above-mentioned control process it is found that master controller judges to assist by comparing the output signal of two pressure sensors
Blower accordingly changes the revolving speed of accessory fan later, promotes normal smoke evacuation ability and be unlikely to become in the state of flue
Resistance enables accessory fan to match with main air blower, maintains total blast volume more than normal exhaust fume range, to improve fume-exhausting
Effect.
The foregoing is merely the preferred embodiment of the present invention, it is noted that for those of ordinary skills,
Under the premise of not departing from the principle of the present invention, a variety of remodeling or improvement can be carried out to the present invention, these are regarded as the present invention
Protection scope within.
Claims (6)
1. a kind of range hood adjusted with air quantity, including main air blower (1) and it is connected to the smoke pipe (2) of main air blower air outlet,
It is characterized in that: further including master controller (4) and the accessory fan (3) being mounted on the smoke pipe, the accessory fan (3) is
Axial flow blower is equipped with first pressure sensor (5) in blade (31) front of the accessory fan (3), in the auxiliary wind
Blade (31) back side of machine (3) is equipped with second pressure sensor (6), and the first pressure sensor (5) and second pressure pass
The signal output end of sensor (6) is used to be connected with the signal input part of the master controller, and the master controller (4) basis is from the
One pressure sensor (5) and second pressure sensor (6) received signal control the motor speed of the accessory fan (3), institute
The accessory fan (3) stated at least there are two and before and after be sequentially connected in series.
2. the range hood according to claim 1 adjusted with air quantity, it is characterised in that: further include having the first reference voltage
Adjuster (7) and the second reference voltage regulator (8), first comparator (9) and the second comparator (10), the first pressure pass
The signal output end of the signal output end of sensor (5) and the first reference voltage regulator (7) respectively with the first comparator (9)
First input end, the second input terminal be connected, the signal output end and the second reference voltage tune of the second pressure sensor (6)
The signal output end of section device (8) is connected with first input end, the second input terminal of second comparator (10) respectively, and described the
The signal input part phase of the output end of one comparator (9) and the output end of the second comparator (10) with the master controller (4)
Even.
3. the range hood according to claim 1 adjusted with air quantity, it is characterised in that: the first pressure sensor
(5) it is mounted on same blade (31) with second pressure sensor (6).
4. the range hood according to claim 1 adjusted with air quantity, it is characterised in that: the first pressure sensor
(5) and second pressure sensor (6) is using piezoelectricity sensor film or piezo-electric crystal or piezoelectric ceramic piece.
5. the range hood according to claim 1 adjusted with air quantity, it is characterised in that: the accessory fan (3) includes
Compatible blower housing (32), is equipped on the blower housing (32) and consolidates for what is be fixed on the wall with smoke pipe (2)
The both ends of fixed rack (33), the blower housing (32) are connected on the corresponding ports of smoke pipe (2).
6. a kind of air quantity control method of range hood described in claim 1, it is characterised in that including process control as follows:
1., the pressure P of measured in advance range hood face of blade when keeping normal smoke evacuation flow1With the pressure P of vacuum side of blade2It
Between minimum differntial pressure Δ P；
2., the ambient windstream variation in first pressure sensor (5) and second pressure sensor (6) induction smoke pipe, and it is mutually deserved
To the pressure P of face of blade1With the pressure P of vacuum side of blade2；
3., judge P by master controller (4)1-P2Difference and Δ P relationship；
If 4., P1-P2>=Δ P keeps the existing revolving speed of accessory fan motor or gear；
If 0 < P1-P2< Δ P improves revolving speed or gear by main controller controls accessory fan；
If P2-P1>=0, revolving speed perhaps gear or replacement accessory fan motor are improved by main controller controls accessory fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704120.9A CN106123077B (en) | 2016-08-19 | 2016-08-19 | A kind of range hood and its air quantity control method adjusted with air quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704120.9A CN106123077B (en) | 2016-08-19 | 2016-08-19 | A kind of range hood and its air quantity control method adjusted with air quantity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106123077A CN106123077A (en) | 2016-11-16 |
| CN106123077B true CN106123077B (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610704120.9A Active CN106123077B (en) | 2016-08-19 | 2016-08-19 | A kind of range hood and its air quantity control method adjusted with air quantity |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975842B (en) * | 2017-05-27 | 2023-08-18 | 宁波方太厨具有限公司 | Public flue smoke discharging system and control method |
| CN109028440B (en) * | 2018-08-01 | 2024-03-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Air supply system, booster station and control method of air supply system |
| CN110186089B (en) * | 2019-05-19 | 2024-02-20 | 宁波方太厨具有限公司 | Series double-fan type range hood and flow control method thereof |
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| CN102022766A (en) * | 2010-07-23 | 2011-04-20 | 杨肇 | Calculus power low-carbon range hood |
| CN203454246U (en) * | 2013-08-28 | 2014-02-26 | 西安耀北光电科技有限公司 | Novel kitchen fume purifying device |
| CN105465860A (en) * | 2015-12-25 | 2016-04-06 | 宁波方太厨具有限公司 | Actual flow measuring device of extractor hood and measuring method of actual flow measuring device |
| CN205227466U (en) * | 2015-12-17 | 2016-05-11 | 王帅 | Wind pressure control type range hood |
| CN205481201U (en) * | 2015-12-21 | 2016-08-17 | 思达文电器（深圳）有限公司 | Intelligent lampblack absorber |
| CN206001573U (en) * | 2016-08-19 | 2017-03-08 | 宁波方太厨具有限公司 | A kind of range hood adjusting with air quantity |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008348110B2 (en) * | 2008-01-18 | 2013-07-18 | Strobic Air Corporation | Control system for exhaust gas fan system |
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2016
- 2016-08-19 CN CN201610704120.9A patent/CN106123077B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022766A (en) * | 2010-07-23 | 2011-04-20 | 杨肇 | Calculus power low-carbon range hood |
| CN203454246U (en) * | 2013-08-28 | 2014-02-26 | 西安耀北光电科技有限公司 | Novel kitchen fume purifying device |
| CN205227466U (en) * | 2015-12-17 | 2016-05-11 | 王帅 | Wind pressure control type range hood |
| CN205481201U (en) * | 2015-12-21 | 2016-08-17 | 思达文电器（深圳）有限公司 | Intelligent lampblack absorber |
| CN105465860A (en) * | 2015-12-25 | 2016-04-06 | 宁波方太厨具有限公司 | Actual flow measuring device of extractor hood and measuring method of actual flow measuring device |
| CN206001573U (en) * | 2016-08-19 | 2017-03-08 | 宁波方太厨具有限公司 | A kind of range hood adjusting with air quantity |
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| CN106123077A (en) | 2016-11-16 |
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