CN203433301U - An automatic controller for a smoke exhaust ventilator - Google Patents
An automatic controller for a smoke exhaust ventilator Download PDFInfo
- Publication number
- CN203433301U CN203433301U CN201320549006.5U CN201320549006U CN203433301U CN 203433301 U CN203433301 U CN 203433301U CN 201320549006 U CN201320549006 U CN 201320549006U CN 203433301 U CN203433301 U CN 203433301U
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- CN
- China
- Prior art keywords
- smoke exhaust
- circuit
- actuated
- diode
- resistance
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Abstract
The utility model discloses an automatic controller for a smoke exhaust ventilator. The automatic controller comprises a power supply circuit, a gas-sensitive sensor, a temperature-compensating and amplifying circuit, a comparing circuit, and a switch circuit. In the automatic controller for a smoke exhaust ventilator, the gas-sensitive sensor is used for detecting the content of natural gas, coal gas, and oil smoke in a kitchen and converts the content into voltage variation. Then, the turning on and off of the smoke exhaust ventilator are automatically controlled by the comparing circuit and an amplitude-limiting circuit or the like. Therefore, the smoke exhaust ventilator is automatically turned on when meal is cooked and is automatically turned off after the meal is cooked and smoke is exhausted. The automatic controller for a smoke exhaust ventilator has characteristics of simple circuit structure, steady control, practicality, and low cost.
Description
Technical field
The utility model relates to Electrical Control Technology field, is specifically related to a kind of smoke exhaust self-actuated controller that is applied to family kitchen smoke exhaust.
Background technology
At present, the smoke exhaust in household kitchen is all manually connect and cut out, and while cooking with cooking, forgets out sometimes smoke exhaust ventilator, and when finding oil smoke, in kitchen, smog curls up, and health is produced to harmful effect.In addition, cook and finish to close immediately smoke exhaust ventilator, the harmful gas in kitchen can not leave immediately, to people's health, also can exert an influence.More seriously, when forgetting, close smoke exhaust ventilator, the time, when longer, is not only wasted electric energy, reduces smoke exhaust ventilator serviceable life, and easily causes and use electrification.
As the notification number Chinese utility model patent that is CN102777953A, a kind of intelligent lampblack absorber is disclosed, it comprises casing, casing bottom is provided with wind gathering cover and illuminating lamp, in casing, be provided with electro-motor, electro-motor is electrically connected to illuminating lamp, is provided with smoke detection control circuit in casing, and smoke detection control circuit comprises power supply, smoke transducer, controller, relay, timing control circuit and rotating-speed control circuit; Controller is connected with power supply, smoke transducer and relay respectively by circuit, and electro-motor is electrically connected by timing control circuit and rotating-speed control circuit and relay successively, forms electric power loop.This lampblack absorber has smoke transducer, controller, although it can connect wind gathering fan according to the oil smoke assay value in kitchen, and automatically regulate its rotating speed, but automatically open, cook during unresolved above-mentioned cooking, finish and automatically close this problem during emptying smog.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of smoke exhaust self-actuated controller, there is power circuit, temperature compensation and amplifying circuit, comparator circuit, on-off circuit, it adopts gas sensor to detect rock gas, coal gas and the oil smoke content in kitchen, and convert the variation of voltage to, then by the connecting and disconnecting of the circuit auto-controlled fume exhaustors such as comparison, amplitude limit, while making smoke exhaust ventilator automatically open, cook end emptying smog when cooking, automatically close.
To achieve these goals, the utility model adopts following technical scheme.
A self-actuated controller, is installed on the supply socket of smoke exhaust, comprises DC power supply circuit, gas sensor, normally opened contact, and gas sensor is connected with DC power supply circuit, smoke exhaust supply socket and normally opened contact.
Preferably, described DC power supply circuit comprises transformer, bridge rectifier circuit, three terminal regulator, filtering circuit, and it is powered to controller with 12V DC voltage.
In above-mentioned arbitrary technical scheme, preferably, described bridge rectifier circuit comprises the first diode, the second diode, the 3rd diode, the 4th diode.
In above-mentioned arbitrary technical scheme, preferably, described filtering circuit comprises the first electric capacity, the second electric capacity.
In above-mentioned arbitrary technical scheme, preferably, described gas sensor adopts the QM-N5 type gas sensor element of N-type semiconductor.
In above-mentioned arbitrary technical scheme, preferably, also comprise temperature compensation and amplifying circuit.
In above-mentioned arbitrary technical scheme, preferably, described temperature compensation and amplifying circuit are connected with described gas sensor, the drift bringing due to temperature variation in order to complemental air dependent sensor.
In above-mentioned arbitrary technical scheme, preferably, described temperature compensation and amplifying circuit comprise the first operational amplifier, the first resistance, the second resistance, the 3rd resistance, the first potentiometer, the second potentiometer, thermistor.
In above-mentioned arbitrary technical scheme, preferably, also comprise comparator circuit.
In above-mentioned arbitrary technical scheme, preferably, described comparator circuit is connected with described temperature compensation and amplifying circuit, and described comparator circuit is homophase input threshold comparer.
In above-mentioned arbitrary technical scheme, preferably, described comparator circuit comprises the second operational amplifier, the 4th resistance, the 5th resistance, the 6th resistance, the 3rd potentiometer.
In above-mentioned arbitrary technical scheme, preferably, also comprise on-off circuit.
In above-mentioned arbitrary technical scheme, preferably, described on-off circuit is connected with described comparator circuit.
In above-mentioned arbitrary technical scheme, preferably, described on-off circuit comprises the first triode, the second triode, the 7th resistance, relay, the 5th diode, the 6th diode.
In above-mentioned arbitrary technical scheme preferably, resistance between the first pin of described the first potentiometer and described gas sensor, tripod, and the second potentiometer, thermistor, the second resistance form a direct current bridge.
In above-mentioned arbitrary technical scheme, preferably, described the first operational amplifier and the second operational amplifier form dual operational amplifier.
In above-mentioned arbitrary technical scheme, preferably, described dual operational amplifier is LM358 type dual operational amplifier.
In above-mentioned arbitrary technical scheme, preferably, described thermistor is MF52E type thermistor.
In above-mentioned arbitrary technical scheme preferably, described transformer adopting 220V/25V power step-down transformer.
In above-mentioned arbitrary technical scheme, preferably, described three terminal regulator adopts W7812 type three terminal regulator.
In above-mentioned arbitrary technical scheme, preferably, described the first diode, the second diode, the 3rd diode, the 4th diode adopt IN4004 type diode.
This self-actuated controller that is applied to family kitchen smoke exhaust of the present utility model, comprise power circuit, gas sensor, temperature compensation and amplifying circuit, comparator circuit and on-off circuit, power circuit, gas sensor, temperature compensation and amplifying circuit, comparator circuit, on-off circuit interconnect, and DC power supply circuit is powered to controller with 12V DC voltage.
Smoke exhaust self-actuated controller of the present utility model, adopt gas sensor to detect rock gas, coal gas and the oil smoke content in kitchen, and convert the variation of voltage to, then by the connecting and disconnecting of the circuit auto-controlled fume exhaustors such as comparison, amplitude limit, while making smoke exhaust ventilator automatically open, cook end emptying smog when cooking, automatically close.
Smoke exhaust self-actuated controller of the present utility model, circuit structure is simple, it is stable to control, practicality and cost low.
Accompanying drawing explanation
Fig. 1 is according to the controller principle figure of a preferred embodiment of smoke exhaust self-actuated controller of the present utility model;
Fig. 2 is according to the controller circuitry figure of a preferred embodiment of smoke exhaust self-actuated controller of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated, below describe only conduct demonstration and explain, the utility model is not restricted.
As depicted in figs. 1 and 2, smoke exhaust self-actuated controller, be installed on the supply socket F of smoke exhaust, comprise DC power supply circuit, gas sensor, normally opened contact K1-1, temperature compensation and amplifying circuit, comparator circuit, on-off circuit, gas sensor is connected with DC power supply circuit, smoke exhaust supply socket F and normally opened contact K1-1.DC power supply circuit comprises transformer T, bridge rectifier circuit, three terminal regulator IC1, filtering circuit, and it is powered to controller with 12V DC voltage.Bridge rectifier circuit comprises the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, and filtering circuit comprises the first capacitor C 1, the second capacitor C 2, and gas sensor adopts the QM-N5 type gas sensor element of N-type semiconductor.Temperature compensation and amplifying circuit are connected with gas sensor, the drift bringing due to temperature variation in order to complemental air dependent sensor, temperature compensation and amplifying circuit comprise the first operational amplifier IC2A, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first potentiometer W1, the second potentiometer W2, thermistor
.Comparator circuit is connected with temperature compensation and amplifying circuit, and comparator circuit is homophase input threshold comparer, and comparator circuit comprises the second operational amplifier IC2B, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd potentiometer W3.On-off circuit is connected with comparator circuit, and on-off circuit comprises the first triode T1, the second triode T2, the 7th resistance R 7, relay K, the 5th diode D5, the 6th diode D6.Wherein, resistance between the first pin of the first potentiometer W1 and gas sensor, tripod, and the second potentiometer W2, thermistor
, the second resistance R 2 forms a direct current bridge.
In this smoke exhaust self-actuated controller circuit, the first operational amplifier IC2A and the second operational amplifier IC2B form dual operational amplifier.Dual operational amplifier is LM358 type dual operational amplifier, thermistor
for MF52E type thermistor, transformer T adopts 220V/25V power step-down transformer.Three terminal regulator IC1 adopts W7812 type three terminal regulator, and the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 adopt IN4004 type diode.
In addition, in this smoke exhaust self-actuated controller circuit, the first potentiometer W1 is 5
, the second potentiometer W2 is 10
, the 3rd potentiometer W3 is 10
, the first resistance R 1 is 4.7
, the second resistance R 2, the 3rd resistance R 3 are 10
, the 4th resistance R 4 is 10
, the 5th resistance R 5, the 6th resistance R 6 are 5.1
, the 7th resistance R 7 is 5.1
, the first capacitor C 1 is 1000
/ 25V, the second capacitor C 2 is 1
/ 25V.
In concrete enforcement, smoke exhaust self-actuated controller is by power circuit, gas sensor, temperature compensation and amplifying circuit, the composition such as comparator circuit, on-off circuit, power circuit is by transformer T, commutation diode D1 to D4 and three terminal regulator IC1 and filter capacitor C1, C2 form, and power circuit produces
dC voltage.Gas sensor adopts the QM-N5 element of N-type semiconductor, and this model gas sensor is highly sensitive, and stability is good, and response and release time are short.The first operational amplifier IC2A and the second operational amplifier IC2B form dual operational amplifier, and model is LM358, and it adopts single supply mode of operation.The first operational amplifier IC2A and the second resistance R 2, the first potentiometer W1, the second potentiometer W2, thermistor
form temperature compensation and amplifying circuit, be used for the drift that complemental air dependent sensor brings due to temperature variation.The second operational amplifier IC2B and the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd potentiometer W3 form comparer, and this circuit is homophase input threshold comparer.The first triode T1, the second triode T2, the 7th resistance R 7, relay K and diode D5, D6 form on-off circuit.Resistance between the 1st, 3 liang of angles of the first potentiometer W1 and gas sensor, and the second potentiometer W2, thermistor
, the second resistance R 2 forms a direct current bridge.When bridge balance, the second potentiometer W2 equals the second resistance R 2, thermistor
equal resistance between the 1st, 3 liang of angles of the first potentiometer W1 and gas sensor the.Due to electrical resistance temperature variation between the 1st, 3 liang of angles of gas sensor, resistance declines, so thermistor
select negative tempperature coefficient thermistor, can compensate the change in voltage of bringing due to temperature variation like this.
In kitchen during without oil smoke, the 1st of gas sensor, between 3 liang of angles, resistance is very high, about tens kilohms, therefore, the voltage of getting on the second potentiometer W2 is lower, this voltage is added to the in-phase input end of differential amplifier circuit, through amplifying, at the first operational amplifier IC2A output terminal, obtain the voltage signal of hundreds of millivolt, this signal is delivered to voltage ratio, because the input voltage of in-phase end is less than the setting threshold voltage (1v of end of oppisite phase, by the 3rd potentiometer W3, set), comparer is output as 0V voltage signal, the first triode T1 of on-off circuit and the second triode T2 cut-off, in relay, no current passes through, its normally opened contact K1-1 disconnects smoke exhaust power supply, smoke exhaust can not be worked.
When there is oil smoke in kitchen, the 1st of gas sensor, between 3 liang of angles, resistance is lower, about hundreds of ohm, therefore, the voltage of getting on the second potentiometer W2 is higher, through amplifying, more than this voltage is amplified to 1V, deliver to the in-phase input end of voltage comparator, input voltage comparison with end of oppisite phase the second potentiometer W2, because the input voltage of in-phase end is greater than the threshold voltage that end of oppisite phase is set, the voltage signal of be approximately+11V of comparer output, the first triode T1 of on-off circuit and the second triode T2 saturation conduction, relay K obtains electric, its normally opened contact K1-1 is closed, to smoke exhaust, switch on power, smoke exhaust is started working.
Claims (21)
1. a smoke exhaust self-actuated controller, is installed on the supply socket (F) of smoke exhaust, comprises DC power supply circuit, it is characterized in that: also comprise gas sensor, normally opened contact (K1-1); Described gas sensor is connected with described DC power supply circuit, smoke exhaust supply socket (F) and normally opened contact (K1-1).
2. smoke exhaust self-actuated controller as claimed in claim 1, is characterized in that: described DC power supply circuit comprises transformer (T), bridge rectifier circuit, three terminal regulator (IC1), filtering circuit, and it is powered to controller with 12V DC voltage.
3. smoke exhaust self-actuated controller as claimed in claim 2, is characterized in that: described bridge rectifier circuit comprises the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4).
4. smoke exhaust self-actuated controller as claimed in claim 2, is characterized in that: described filtering circuit comprises the first electric capacity (C1), the second electric capacity (C2).
5. smoke exhaust self-actuated controller as claimed in claim 1, is characterized in that: described gas sensor adopts the QM-N5 type gas sensor element of N-type semiconductor.
6. smoke exhaust self-actuated controller as claimed in claim 1, is characterized in that: also comprise temperature compensation and amplifying circuit.
7. smoke exhaust self-actuated controller as claimed in claim 6, is characterized in that: described temperature compensation and amplifying circuit are connected with gas sensor the drift bringing due to temperature variation with complemental air dependent sensor.
8. the smoke exhaust self-actuated controller as described in claim 6 or 7, is characterized in that: described temperature compensation and amplifying circuit comprise the first operational amplifier (IC2A), the first resistance (R1), the second resistance (R2), the 3rd resistance (R3), the first potentiometer (W1), the second potentiometer (W2), thermistor (
).
9. smoke exhaust self-actuated controller as claimed in claim 1, is characterized in that: also comprise comparator circuit.
10. smoke exhaust self-actuated controller as claimed in claim 9, is characterized in that: described comparator circuit is connected with temperature compensation and amplifying circuit, and described comparator circuit is homophase input threshold comparer.
11. smoke exhaust self-actuated controllers as described in claim 9 or 10, is characterized in that: described comparator circuit comprises the second operational amplifier (IC2B), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 3rd potentiometer (W3).
12. smoke exhaust self-actuated controllers as claimed in claim 1, is characterized in that: also comprise on-off circuit.
13. smoke exhaust self-actuated controllers as claimed in claim 12, is characterized in that: described on-off circuit is connected with comparator circuit.
14. smoke exhaust self-actuated controllers as described in claim 12 or 13, is characterized in that: described on-off circuit comprises the first triode (T1), the second triode (T2), the 7th resistance (R7), relay (K), the 5th diode (D5), the 6th diode (D6).
15. smoke exhaust self-actuated controllers as claimed in claim 8, is characterized in that: resistance between the first pin of described the first potentiometer (W1) and described gas sensor, tripod, and the second potentiometer (W2), thermistor (
), the second resistance (R2) forms a direct current bridge.
16. smoke exhaust self-actuated controllers as claimed in claim 8, is characterized in that: described the first operational amplifier (IC2A) forms dual operational amplifier with the second operational amplifier (IC2B).
17. smoke exhaust self-actuated controllers as claimed in claim 16, is characterized in that: described dual operational amplifier is LM358 type dual operational amplifier.
18. smoke exhaust self-actuated controllers as claimed in claim 8, is characterized in that: described thermistor (
) be MF52E type thermistor.
19. smoke exhaust self-actuated controllers as claimed in claim 2, is characterized in that: described transformer (T) adopts 220V/25V power step-down transformer.
20. smoke exhaust self-actuated controllers as claimed in claim 2, is characterized in that: described three terminal regulator (IC1) adopts W7812 type three terminal regulator.
21. smoke exhaust self-actuated controllers as claimed in claim 3, is characterized in that: described the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4) adopt IN4004 type diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549006.5U CN203433301U (en) | 2013-09-05 | 2013-09-05 | An automatic controller for a smoke exhaust ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549006.5U CN203433301U (en) | 2013-09-05 | 2013-09-05 | An automatic controller for a smoke exhaust ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433301U true CN203433301U (en) | 2014-02-12 |
Family
ID=50062328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549006.5U Expired - Fee Related CN203433301U (en) | 2013-09-05 | 2013-09-05 | An automatic controller for a smoke exhaust ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203433301U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823105A (en) * | 2016-05-13 | 2016-08-03 | 吴建堂 | Power supply socket of human body induction delay stop range hood |
| CN112558506A (en) * | 2019-09-25 | 2021-03-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method, kitchen device and computer-readable storage medium |
| CN113864842A (en) * | 2021-10-27 | 2021-12-31 | 广东电网有限责任公司 | Smoke exhaust ventilator |
-
2013
- 2013-09-05 CN CN201320549006.5U patent/CN203433301U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823105A (en) * | 2016-05-13 | 2016-08-03 | 吴建堂 | Power supply socket of human body induction delay stop range hood |
| CN112558506A (en) * | 2019-09-25 | 2021-03-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method, kitchen device and computer-readable storage medium |
| CN113864842A (en) * | 2021-10-27 | 2021-12-31 | 广东电网有限责任公司 | Smoke exhaust ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160905 |