CN107062332B - A kind of kitchen ventilator autocontrol method based on capacitance type sensor - Google Patents
A kind of kitchen ventilator autocontrol method based on capacitance type sensor Download PDFInfo
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- CN107062332B CN107062332B CN201710235117.1A CN201710235117A CN107062332B CN 107062332 B CN107062332 B CN 107062332B CN 201710235117 A CN201710235117 A CN 201710235117A CN 107062332 B CN107062332 B CN 107062332B
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- capacitance
- type sensor
- capacitance type
- kitchen ventilator
- setting
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Classifications
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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
Abstract
The invention discloses a kind of kitchen ventilator autocontrol method based on capacitance type sensor, the concentration changing value of the oil smoke of capacitance type sensor is flowed through by the test using capacitance sensor being arranged in oil smoke channel, and switch for cooker hood and lifting shelves are automatically controlled according to the variation of capacitance.To guarantee the exclusion effect of oil smoke, while the no-load power loss and noise pollution of kitchen ventilator are also reduced, meets consumer to environmentally protective, noise-reduction energy-saving and intelligentized pursuit.Meanwhile the present invention carries out self study by the capacitance of several specified points, to adapt to use environment to error caused by capacitance type sensor influence.
Description
Technical field
The invention belongs to oil smoke discharge technical fields, automatic more particularly to a kind of kitchen ventilator based on capacitance type sensor
Control method.
Background technique
Kitchen ventilator is a kind of very common kitchen fume remover apparatus, by making spatial dimension certain above cooking stove
Interior formation negative pressuren zone will be discharged to outdoor after the sucking of indoor soot gas, filtering, purification.Currently, common oil suction in the market
Smoke machine can only all fix air quantity operation under preset gear, when the mode of culinary art changes, if user cannot be timely
Inevitably result in a large amount of fumes escapings if switching gear, pollute indoor environment, it is difficult to meet consumer to it is environmentally protective,
Noise-reduction energy-saving and intelligentized pursuit.
In order to guarantee oil smoke absorb effect, need kitchen ventilator can with the concentration (oil smoke amount) of oil smoke change automatically into
Row lifting shelves.Prior art discovery can cause the variation of capacity plate antenna value when oil smoke is after the electrode of a pair of plates capacitor.
Specifically oil smoke concentration, capacitor temperature variation are directly proportional to the capacitance of capacity plate antenna.
Summary of the invention
Present invention aims at the relationships based on above-mentioned capacitance type sensor and oil smoke concentration changing value, and providing one kind can
According to the kitchen ventilator autocontrol method of oil smoke concentration adjust automatically kitchen ventilator gear.
The present invention to achieve the above object, adopts the following technical scheme that
A kind of kitchen ventilator autocontrol method based on capacitance type sensor, passes through the electricity being arranged in oil smoke passage path
Capacity sensor detects oil smoke concentration control kitchen ventilator gear operation, it is characterised in that includes the following steps:
(1) when the capacitance of capacitance type sensor is from initial value C0Changing value C is greater than and sets within the unit time of setting
Fixed changing value, then kitchen ventilator starting operate in original speed position；
(2) after kitchen ventilator starting original speed position is started to work, the capacitance of capacitance type sensor persistently rises, kitchen ventilator
It is gradually upshiftd according to several capacitances that the rising of capacitance type sensor capacitance reaches setting to most high-grade；
(3) when capacitance type sensor capacitance continues to decline, kitchen ventilator reaches according to the decline of capacitance type sensor capacitance
Several capacitances of setting gradually downshift to original speed position；
(4) kitchen ventilator original speed position after a period of work, capacitance type sensor capacitance drops to stopping for setting
Only value CSTOPWhen, kitchen ventilator stops working.
It is further characterized by: the stop value C of the capacitance type sensorSTOPSlightly larger than initial value C0。
Further, most high-grade corresponding capacitance C in the step (2)maxSetting method are as follows: Continuous plus kitchen ventilator
After initial shelves work in unit time T the capacitance of capacitance type sensor variable quantity Cn/ T, when the variation of latter time period
Measure Cn/ T is greater than previous time period variable quantity Cn-1At 2 times of/T, the capacitance of capacitance type sensor is C at this time1；Wherein n
For time hop counts；With capacitance C1For most high-grade corresponding capacitance C when kitchen ventilator works next time according to settingmax, capacitance
CmaxIt is slightly less than capacitance C1。
It is preferred: the initial shelves of kitchen ventilator and it is most high-grade between upshift set capacitance, initial value C when by initial shelves0
Capacitance C when most high-grademaxBetween numerical value equal difference setting；Capacitance C when downshift setting capacitance setting presses most high-grademax
With stop value CSTOPBetween numerical value equal difference setting.
When kitchen ventilator work is most high-grade, capacitance type sensor capacitance continues to be increased beyond Calarm, then alarm is issued.
It is preferred: the capacitor initial value C of capacitance type sensor when kitchen ventilator records every task0With capacitance C1, according to
The capacitor initial value C of capacitance type sensor0With capacitance C1Each gear setting value of synchronous adjustment.
The soot motor is direct current variable frequency motor, and motor is according to gear signal electrodeless variable-speed.
The capacitance type sensor is parallel plate capacitor, circular capacitor or thin-film capacitor.
The capacitance type sensor is arranged in closest to the oil smoke mouth or exhaust fume collecting hood of hearth and the junction of flue.
Metal mesh is provided with outside the capacitance type sensor.
The present invention passes through the oil smoke that the test using capacitance sensor that is arranged in oil smoke channel flows through capacitance type sensor
Concentration changing value, and switch for cooker hood and lifting shelves are automatically controlled according to the variation of capacitance.To guarantee the exclusion effect of oil smoke
Fruit, while also reducing the no-load power loss and noise pollution of kitchen ventilator, meet consumer to environmentally protective, noise-reduction energy-saving and
Intelligentized pursuit.Meanwhile the present invention carries out self study by the capacitance of several specified points, to adapt to use environment to capacitor
Error caused by formula sensor influences.
Detailed description of the invention
Fig. 1 relation schematic diagram between culinary art mode and capacitance type sensor capacitance.
Specific embodiment
By the prior art it is found that oil smoke concentration, temperature change are directly proportional to the capacitance of capacitance type sensor.And middle country
The distinctive cooking step in front yard is usually:
Hearth is opened fire；
Edible oil is heated, oil smoke gradually generates at this time, and oil smoke concentration gradually increases；
Food materials are put into pot, are quicklyd increase in the oil smoke concentration short time at this time；
With being stepped up for food materials temperature, oil smoke concentration is also stepped up；
After oil smoke concentration reaches certain value, it is in stable state；
As food materials complete the process, oil smoke concentration is gradually reduced, and final oil smoke dissipates completely.
The variation of above-mentioned cooking process oil smoke concentration is bent by capacitance and the relationship of the time reflection of capacitance type sensor
Line is as shown in Figure 1.
According to Fig. 1 curve, the automatic switch and lifting shelves of kitchen ventilator are set.
1. in the initial stage since room temperature variation is very slowly, so the variation of the capacitance of capacitance type sensor is also
Slowly, at this point, the capacitor initial value of capacitance type sensor is C0。
2. the variation that hearth is opened fire: in the short time, temperature is increased, and oil smoke concentration is also stepped up, and capacitance is also corresponding
Variation.When the capacitance of capacitance type sensor is from initial value C0Changing value C is greater than the change of setting within the unit time of setting
When change value, kitchen ventilator starting operates in original speed position.
3., with the raising of oil temperature, oil smoke concentration gradually increases, capacitor after kitchen ventilator starting original speed position is started to work
The capacitance of formula sensor also accordingly persistently rises, and kitchen ventilator reaches the several of setting according to the rising of capacitance type sensor capacitance
The capacitance of equal difference setting gradually upshifts to most high-grade.
4. being put into food materials in pot, oil smoke concentration quicklys increase in the short time, and the capacitance of capacitance type sensor is also corresponding
There is a mutation.At this moment pass through the capacitance of capacitance type sensor in unit time T after the initial shelves work of Continuous plus kitchen ventilator
Variable quantity Cn/ T, as the variable quantity C of latter time periodn/ T is greater than previous time period variable quantity Cn-1At 2 times of/T, this
When capacitance type sensor capacitance be C1；Wherein n is time hop counts.In order to guarantee the exclusion effect of oil smoke, it is desirable that reaching
Capacitance C1Before, kitchen ventilator is in most high-grade operation.Therefore, by the most high-grade corresponding capacitance C of kitchen ventilatormaxIt is set as
It is slightly less than capacitance C1。
5. oil smoke concentration is gradually reduced as food materials complete the process, capacitance type sensor capacitance is continued to decline.Kitchen ventilator
Reach several equal difference capacitances of setting gradually from most high-grade downshift to original speed position according to the decline of capacitance type sensor capacitance.
6. kitchen ventilator original speed position after a period of work, capacitance type sensor capacitance drops to the stopping of setting
Value CSTOPWhen, kitchen ventilator stops working.Stop value CSTOPSlightly larger than initial value C0。
7. capacitance type sensor capacitance continues to be increased beyond C when kitchen ventilator work is most high-gradealarm, it is judged as at this time
Oil cauldron generates a large amount of oil smoke in dry combustion method.Kitchen ventilator then issues dry combustion method alarm.
Due to capacitance type sensor as oil smoke deposits, the variation of the use environments factor such as variation of ambient temperature, which can generate, to be set
Definite value can not be applicable in the case where use environment.The capacitor initial value C of capacitance type sensor when kitchen ventilator records every task0With
Capacitance C1, according to the capacitor initial value C of capacitance type sensor0With capacitance C1Each gear setting value of synchronous adjustment.It is several by this
The capacitance of a specified point carries out self study, to adapt to use environment to error caused by capacitance type sensor influence.
Preferred: soot motor is direct current variable frequency motor, and motor is according to gear signal electrodeless variable-speed.
Capacitance type sensor is parallel plate capacitor, circular capacitor or thin-film capacitor.Capacitance type sensor is arranged closest
The oil smoke mouth or exhaust fume collecting hood of hearth and the junction of flue.Capacitance type sensor periphery adds highdensity metal mesh, has reached
Shield the effect of interference.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (9)
1. a kind of kitchen ventilator autocontrol method based on capacitance type sensor, passes through the capacitor being arranged in oil smoke passage path
Formula sensor detects oil smoke concentration control kitchen ventilator gear operation, it is characterised in that includes the following steps:
(1) when the capacitance of capacitance type sensor is from initial value C0Changing value C is greater than the change of setting within the unit time of setting
Change value, then kitchen ventilator starting operate in original speed position；
(2) kitchen ventilator starting original speed position start to work after, the capacitance of capacitance type sensor persistently rises, kitchen ventilator according to
Several capacitances that the rising of capacitance type sensor capacitance reaches setting gradually upshift to most high-grade；Most high-grade corresponding capacitance
CmaxSetting method are as follows: after the initial shelves work of Continuous plus kitchen ventilator in unit time T the capacitance of capacitance type sensor change
Change amount Cn/ T, as the variable quantity C of latter time periodn/ T is greater than previous time period variable quantity Cn-1At 2 times of/T, at this time
The capacitance of capacitance type sensor is C1；Wherein n is time hop counts；With capacitance C1For according to setting, kitchen ventilator works next time
When most high-grade corresponding capacitance Cmax, capacitance CmaxIt is slightly less than capacitance C1；
(3) when capacitance type sensor capacitance continues to decline, kitchen ventilator reaches setting according to the decline of capacitance type sensor capacitance
Several capacitances gradually downshift to original speed position；
(4) kitchen ventilator original speed position after a period of work, capacitance type sensor capacitance drops to the stop value of setting
CSTOPWhen, kitchen ventilator stops working.
2. the kitchen ventilator autocontrol method according to claim 1 based on capacitance type sensor, it is characterised in that: described
The stop value C of capacitance type sensorSTOPSlightly larger than initial value C0。
3. the kitchen ventilator autocontrol method according to claim 1 based on capacitance type sensor, it is characterised in that: oil smoke
The initial shelves of machine and it is most high-grade between upshift set capacitance, initial value C when by initial shelves0Capacitance when most high-grade
CmaxBetween numerical value equal difference setting；Capacitance C when downshift setting capacitance setting presses most high-grademaxWith stop value CSTOPBetween number
It is worth equal difference setting.
4. the kitchen ventilator autocontrol method according to claim 3 based on capacitance type sensor, it is characterised in that: work as oil
Most high-grade, capacitance type sensor capacitance continues to be increased beyond C for smoke machine workalarm, then alarm is issued.
5. the kitchen ventilator autocontrol method according to claim 1 based on capacitance type sensor, it is characterised in that: oil smoke
The capacitor initial value C of capacitance type sensor when machine records every task0With capacitance C1, according to the capacitor of capacitance type sensor
Initial value C0With capacitance C1Each gear setting value of synchronous adjustment.
6. the kitchen ventilator autocontrol method according to claim 1 based on capacitance type sensor, it is characterised in that: described
Soot motor is direct current variable frequency motor, and motor is according to gear signal electrodeless variable-speed.
7. the kitchen ventilator autocontrol method according to claim 1 based on capacitance type sensor, it is characterised in that: described
Capacitance type sensor is parallel plate capacitor, circular capacitor or thin-film capacitor.
8. the kitchen ventilator autocontrol method according to claim 7 based on capacitance type sensor, it is characterised in that: described
Capacitance type sensor is arranged in closest to the oil smoke mouth or exhaust fume collecting hood of hearth and the junction of flue.
9. the kitchen ventilator autocontrol method according to claim 8 based on capacitance type sensor, it is characterised in that: described
Metal mesh is provided with outside capacitance type sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710235117.1A CN107062332B (en) | 2017-04-12 | 2017-04-12 | A kind of kitchen ventilator autocontrol method based on capacitance type sensor |
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| CN201710235117.1A CN107062332B (en) | 2017-04-12 | 2017-04-12 | A kind of kitchen ventilator autocontrol method based on capacitance type sensor |
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| CN107062332B true CN107062332B (en) | 2018-12-25 |
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| CN108895505A (en) * | 2018-08-28 | 2018-11-27 | 汉威科技集团股份有限公司 | Range hood control device and method based on AC coupled formula electric charge induction method |
| CN110617524A (en) * | 2019-09-25 | 2019-12-27 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method, kitchen appliance and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW543747U (en) * | 2001-12-24 | 2003-07-21 | Da-Shiou Chen | Smoke detection controlling device for range hood |
| CN102121906A (en) * | 2011-01-31 | 2011-07-13 | 无锡中星微电子有限公司 | Smoke detection system as well as intelligent control system and intelligent control method of range hood |
| CN103776076B (en) * | 2014-01-27 | 2017-01-04 | 西安交通大学 | Use the full-automatic continuous adjustable range hood of capacitance type sensor |
| CN103822283B (en) * | 2014-03-12 | 2016-03-16 | 黄善花 | A kind of air quantity controller of range hood and control method |
| CN105299715B (en) * | 2014-06-30 | 2017-10-13 | 青岛海尔洗碗机有限公司 | A kind of lampblack absorber and its control method |
| CN106051875A (en) * | 2016-07-26 | 2016-10-26 | 广东万家乐燃气具有限公司 | Extractor hood with automatically controlled gears |
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