CN201764995U - Gas cooker flow detector and blower gas cooker - Google Patents
Gas cooker flow detector and blower gas cooker Download PDFInfo
- Publication number
- CN201764995U CN201764995U CN2010205189498U CN201020518949U CN201764995U CN 201764995 U CN201764995 U CN 201764995U CN 2010205189498 U CN2010205189498 U CN 2010205189498U CN 201020518949 U CN201020518949 U CN 201020518949U CN 201764995 U CN201764995 U CN 201764995U
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- gas
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- flow detector
- potentiometer
- hollow axle
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Abstract
A gas cooker flow detector comprises a sensor and a detecting circuit connected with the sensor. The middle part of the sensor is provided with a hollow rotating shaft. The hollow rotating shaft is sleeved on a valve stem of a gas valve. The valve stem drives the hollow rotating shaft to rotate. The hollow rotating shaft drives a movable part of the sensor to rotate. A fixed part of the sensor is fixed on the body of the valve. The sensor of the utility model is directly sleeved on the valve stem, so the detector can accurately reflect the rotation angle of the valve stem without needing a transmission mechanism, and measures the gas flow according to the rotation angle of the valve stem. The gas cooker flow detector is simple in structure and convenient for installation.
Description
Technical field
The utility model relates to a kind of gas flow pick-up unit that is used for the blowing type gas kitchen range, relates to a kind of blowing type gas kitchen range that this flow detector is installed simultaneously.
Background technology
Household gas range enters already does tame ten thousand families, but existing product just followed former product ratio to improve a lot on the material in appearance, will realize that on concrete burning performance aspects such as energy-saving and environmental protection, intelligent combustion improve seldom.And to realize energy-saving and environmental protection, intelligence burning except on the gas-cooker structure, improving, can correctly obtain gas flow and offer gas flow size control element, in time regulating the gas flow size, is to realize a ring energy-conservation, the intelligent combustion most critical.Kitchen range regrettably seldom being arranged now at the use traffic testing circuit, also is gas flow sensor with traditional even have.And the precision that traditional gas flow sensor not only detects is subjected to external interference big, the more important thing is that its price is high, and difficulty is installed in kitchen range.These problems have all had a strong impact on the use of traditional gas flow sensor on kitchen range, thereby have caused the difficult problem that becomes of kitchen range gas flow detection, have finally suppressed the raising of kitchen range burning performancies.Chinese patent application number is CN200810026384.9, and open day is on July 23rd, 2008, discloses a kind of blasting type household fuel gas kitchen range, which is provided with air-blast device, the air when being used for aftercombustion, and controller is connected with external transformer.Air-blast device comprises fan blower and coupled blast channel, and the other end of blast channel leads to valve body nozzle place, and air-blast device is installed on the drain pan of gas kitchen ranges one side, and thus much the burner of a side uses air-blast device; Described controller is arranged on the gas kitchen ranges drain pan.Controller starts fan blower by band gear potentiometer, and band gear potentiometer is meshed with linkage gear on being socketed in the valve body rotating shaft, regulates closing/opening of wind speed that air blast enters and fan blower by the rotation ignition knob.Potentiometer in the such scheme is not intended for sensor and carries out flow detection, but directly be connected in series in the fan loop, by the linkage rotation change resistance of valve body, thereby the fan resistance in circuit is changed, electric current by fan is changed, reach the purpose of adjusting rotating speed.And because the working environment of gas-cooker is relatively poor, greasy dirt and high temperature also can impact this gear train, the failure rate height.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of simple in structure, accuracy of detection is high, cost is low, easy for installation gas-cooker flow detector and blowing type gas kitchen range are provided.
A kind of gas-cooker flow detector that provides according to the utility model, comprise sensor and the testing circuit that is connected with described sensor, the middle part of described sensor is provided with hollow axle, described hollow axle is sleeved on the valve rod of gas valve body, valve rod drives described hollow axle and rotates, the moving part that described hollow axle drives in the described sensor rotates, and the fixed part in the described sensor is fixed on the body of gas valve body.
A kind of gas-cooker flow detector that provides according to the utility model also has following attached technical characterictic:
Described sensor is adjustable potentiometer, and the moving contact that described potentiometer includes housing, is installed in the resistive element in the described housing and rotates on described resistive element, described hollow axle drive described moving contact and rotate.
Described testing circuit comprises pull-up resistor R1, filter capacitor C1 and single-chip microcomputer U1, described pull-up resistor R1 one end connects power supply, an other end connects 2 pin of described potentiometer R2,1 pin of described potentiometer is unsettled, 3 pin ground connection, the end of described filter capacitor C1 connects 2 pin among the described potentiometer R2, other end ground connection, and 2 pin output signals among the described potentiometer R2 are in described single-chip microcomputer.
Described single-chip microcomputer is the single-chip microcomputer of band simulating signal/digital signal translation function.
The model of described single-chip microcomputer is PIC16F716.
Be formed with spacing plane in the described hollow axle, be formed with the fixed pan that fits with described spacing plane on the valve rod.
Described sensor is positioned at the knob below of gas valve body.
A kind of blowing type gas kitchen range that provides according to the utility model, comprise body, be installed in air-blast device and flow detector on the described body, described flow detector comprises sensor and the testing circuit that is connected with described sensor, the middle part of described sensor is provided with hollow axle, described hollow axle is sleeved on the valve rod of gas valve body, valve rod drives described hollow axle and rotates, the moving part that described hollow axle drives in the described sensor rotates, and the fixed part in the described sensor is fixed on the body of gas valve body.
A kind of gas-cooker flow detector that provides according to the utility model compared with prior art has following advantage: at first, sensor in the utility model directly is sleeved on the valve rod, need not gear train, can react the anglec of rotation of valve rod accurately, the angle meter that rotates according to valve rod goes out the flow of combustion gas, this is simple in structure, and is easy for installation; Secondly, the utility model adopts potentiometer as sensor, and its cost is low, and testing circuit is simple, and is anti-interference strong.
A kind of blowing type gas kitchen range that provides according to the utility model is owing to installed above-mentioned detecting device, and it can be sent to gas flow in the single-chip microcomputer accurately, and single-chip microcomputer is controlled the ventilation of blast apparatus according to flow, thereby improves burning efficiency.
Description of drawings
Fig. 1 is the stereographic map that valve body and sensor are not in place in the utility model.
Fig. 2 is the stereographic map that valve body and sensor are in place in the utility model.
Fig. 3 is the stereographic map after valve body and the sensor integral installation in the utility model.
Fig. 4 is circuit theory diagrams in the utility model.
Embodiment
Referring to Fig. 1, a kind of gas-cooker flow detector that provides at the utility model, comprise sensor 1 and the testing circuit 2 that is connected with described sensor 1, the middle part of described sensor 1 is provided with hollow axle 11, described hollow axle 11 is sleeved on the valve rod 31 of gas valve body 3, valve rod 31 drives described hollow axle 11 and rotates, and the moving part that described hollow axle 11 drives in the described sensor 1 rotates, and the fixed part 12 in the described sensor is fixed on the body 32 of gas valve body 3.The utility model directly is sleeved on sensor 1 on the valve rod 31, thereby can directly react the angle that valve rod 31 rotates, thereby can accurately detect the flow of combustion gas.Gas valve body 3 on the gas-cooker is applicable to igniting and regulates the gas flow size that therefore, detecting device can react gas flow accurately.
Referring to Fig. 1 to Fig. 3, in the foregoing description that the utility model provides, described sensor 1 is adjustable potentiometer, the moving contact that described potentiometer 1 includes housing, is installed in the resistive element in the described housing and rotates on described resistive element, described hollow axle 11 drives described moving contact and rotates.The utility model has adopted the potentiometer with hollow axle to replace traditional gas flow sensor, described potentiometer is a high precision hollow axle potentiometer, its output resistance changes with the position change of central rotating shaft, the output resistance relative variation is no more than 5 percent in 0-100 ℃ of scope, can satisfy the requirement of kitchen range to sampling precision.Under the prerequisite that guarantees the sampling accuracy, to compare low price a lot of with traditional gas flow sensor for potentiometer, as long as five hexa-atomic one, and install quite convenient, do not need existing kitchen range structure is done big change, only need to be enclosed within central shaft hole on the valve rod of valve body just passable.Traditional high-precision gas flow sensor price is one of dozens of yuan at least, better one in the hundreds of unit that wants, two burners of kitchen range need two sensors, so the cost of optical sensor will one or two hundred yuan, these kitchen range for one or two thousand yuan of market price are difficult to bear.Traditional in addition gas flow sensor will be placed in the gas-cooker gas path pipe, will open a mouth in original gas circuit of sealing when installing like this sensor is put in, and is fixed in the pipeline again, trouble so not only is installed but also has stayed the hidden danger of leaking gas.And the potentiometer that adopts gear train to carry out transmission, the driving error of its gear train is too big, and is subjected to the influence of gas-cooker working environment, and degree of accuracy is very poor.
Referring to Fig. 4, in the foregoing description that the utility model provides, described testing circuit 2 comprises pull-up resistor R1, filter capacitor C1 and single-chip microcomputer U1, described pull-up resistor R1 one end connects power supply 4, and an other end connects 2 pin of described potentiometer R2, and 1 pin of described potentiometer is unsettled, 3 pin ground connection, the end of described filter capacitor C1 connects 2 pin among the described potentiometer R2, other end ground connection, and 2 pin output signals among the described potentiometer R2 are in described single-chip microcomputer U1.Wherein power supply is the 5V power supply 4 on the gas-cooker, is connected by a microswitch 5.The utility model only needs filter capacitor C1 parallel connection to meet a pull-up resistor R1 more just can to sample, and circuit is simple, so all be that capacitance-resistance element antijamming capability is strong.
Referring to Fig. 4, in the foregoing description that the utility model provides, described single-chip microcomputer is the single-chip microcomputer of band simulating signal/digital signal translation function.The model of described single-chip microcomputer is PIC16F716.This is the single-chip microcomputer of the band analog signal figure function switching signal produced of U.S. MICROCHIP company, its function admirable, and low price can stable work in 0-85 ℃ of scope, is suitable for using on kitchen range.Sensor output signal is imported from single-chip microcomputer 17 pin.Input signal is a simulating signal, and single-chip microcomputer can become digital signal to these conversion of signals, and the program that is write by single-chip microcomputer inside is interpreted as gas flow information to these digital signals again.
Referring to Fig. 1, in the foregoing description that the utility model provides, be formed with spacing plane 13 in the described hollow axle 11, be formed with the fixed pan 33 that fits with described spacing plane 13 on the valve rod 31.The structure that spacing plane 13 of the utility model and fixed pan 33 match is installed on the valve rod 31 hollow axle 11, and rotates with valve rod 31.This kind assembly structure is simpler.
Referring to Fig. 3, in the foregoing description that the utility model provides, described sensor 1 is positioned at knob 34 belows of gas valve body 3.The utility model need not gas valve body in the prior art is made amendment, and only need the bottom that sensor is installed in knob 34 be got final product, and total is simpler.
The utility model has adopted gas stove valve as sampling apparatus, and the central rotating shaft of sensor is enclosed within on the valve rod, the body of sensor is fixed on the outside surface of valve body again, the center sensor rotating shaft is rotated with valve rod, and valve rod is with the gas-cooker knob.Thereby the position of center sensor rotating shaft changes output resistance is changed when gas-cooker knob drive valve rod rotates together.Single-chip microcomputer PIC16F712 can judge the angle that valve rod turns over by detecting changes in resistance.Because the angle that valve rod turns over is directly proportional with the flow of combustion gas, so single-chip microcomputer can be judged the flow of combustion gas indirectly.
A kind of blowing type gas kitchen range in that the utility model provides comprises body, is installed in air-blast device and flow detector on the described body, and described flow detector is the flow detector of the foregoing description.Described flow detector can make the gas-cooker blower system of the data transmission of expression present flow rate information to gas-cooker blower system provide corresponding air quantity according to data on flows, has improved the performance of burning greatly.
Claims (8)
1. gas-cooker flow detector, comprise sensor and the testing circuit that is connected with described sensor, it is characterized in that: the middle part of described sensor is provided with hollow axle, described hollow axle is sleeved on the valve rod of gas valve body, valve rod drives described hollow axle and rotates, the moving part that described hollow axle drives in the described sensor rotates, and the fixed part in the described sensor is fixed on the body of gas valve body.
2. a kind of gas-cooker flow detector as claimed in claim 1, it is characterized in that: described sensor is adjustable potentiometer, the moving contact that described potentiometer includes housing, is installed in the resistive element in the described housing and rotates on described resistive element, described hollow axle drive described moving contact and rotate.
3. a kind of gas-cooker flow detector as claimed in claim 2, it is characterized in that: described testing circuit comprises pull-up resistor R1, filter capacitor C1 and single-chip microcomputer U1, described pull-up resistor R1 one end connects power supply, an other end connects 2 pin of described potentiometer R2,1 pin of described potentiometer is unsettled, 3 pin ground connection, and the end of described filter capacitor C1 connects 2 pin among the described potentiometer R2, other end ground connection, 2 pin output signals among the described potentiometer R2 are in described single-chip microcomputer.
4. a kind of gas-cooker flow detector as claimed in claim 3 is characterized in that: described single-chip microcomputer is the single-chip microcomputer of band simulating signal/digital signal translation function.
5. a kind of gas-cooker flow detector as claimed in claim 4 is characterized in that: the model of described single-chip microcomputer is PIC16F716.
6. a kind of gas-cooker flow detector as claimed in claim 2 is characterized in that: be formed with spacing plane in the described hollow axle, be formed with the fixed pan that fits with described spacing plane on the valve rod.
7. a kind of gas-cooker flow detector as claimed in claim 1 is characterized in that: described sensor is positioned at the knob below of gas valve body.
8. a blowing type gas kitchen range comprises body, is installed in air-blast device and flow detector on the described body, it is characterized in that: described flow detector is the described flow detector of the arbitrary claim of aforesaid right requirement 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205189498U CN201764995U (en) | 2010-09-03 | 2010-09-03 | Gas cooker flow detector and blower gas cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205189498U CN201764995U (en) | 2010-09-03 | 2010-09-03 | Gas cooker flow detector and blower gas cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764995U true CN201764995U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205189498U Expired - Lifetime CN201764995U (en) | 2010-09-03 | 2010-09-03 | Gas cooker flow detector and blower gas cooker |
Country Status (1)
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|---|---|
| CN (1) | CN201764995U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501223A (en) * | 2014-12-06 | 2015-04-08 | 许文广 | Premixing plug valve assembly of forced-oxygen-supply gas appliance |
| CN105067068A (en) * | 2015-07-15 | 2015-11-18 | 广东美的厨房电器制造有限公司 | Gas use amount statistic method of gas stove and device |
| CN106979539A (en) * | 2017-04-25 | 2017-07-25 | 广东美的厨房电器制造有限公司 | Gas-cooker and its accident extinguishing detection and warning device |
| CN107940515A (en) * | 2017-12-21 | 2018-04-20 | 慈溪市神驹节能科技有限公司 | Air blast is oxygenated the box body structure of bi-directional regulator |
| CN107940516A (en) * | 2017-12-21 | 2018-04-20 | 慈溪市神驹节能科技有限公司 | The air blast oxygenation bi-directional regulator of gas-cooker |
| CN110454608A (en) * | 2018-05-07 | 2019-11-15 | 青岛海尔智慧厨房电器有限公司 | A kind of knob, gas-cooker and control method |
-
2010
- 2010-09-03 CN CN2010205189498U patent/CN201764995U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501223A (en) * | 2014-12-06 | 2015-04-08 | 许文广 | Premixing plug valve assembly of forced-oxygen-supply gas appliance |
| CN105067068A (en) * | 2015-07-15 | 2015-11-18 | 广东美的厨房电器制造有限公司 | Gas use amount statistic method of gas stove and device |
| CN106979539A (en) * | 2017-04-25 | 2017-07-25 | 广东美的厨房电器制造有限公司 | Gas-cooker and its accident extinguishing detection and warning device |
| CN107940515A (en) * | 2017-12-21 | 2018-04-20 | 慈溪市神驹节能科技有限公司 | Air blast is oxygenated the box body structure of bi-directional regulator |
| CN107940516A (en) * | 2017-12-21 | 2018-04-20 | 慈溪市神驹节能科技有限公司 | The air blast oxygenation bi-directional regulator of gas-cooker |
| CN110454608A (en) * | 2018-05-07 | 2019-11-15 | 青岛海尔智慧厨房电器有限公司 | A kind of knob, gas-cooker and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |