CN203894915U - Combustion gas leakage alarm system - Google Patents
Combustion gas leakage alarm system Download PDFInfo
- Publication number
- CN203894915U CN203894915U CN201420306663.1U CN201420306663U CN203894915U CN 203894915 U CN203894915 U CN 203894915U CN 201420306663 U CN201420306663 U CN 201420306663U CN 203894915 U CN203894915 U CN 203894915U
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- China
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- sheffer stroke
- stroke gate
- resistance
- gas
- output terminal
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Abstract
The utility model discloses a combustion gas leakage alarm system belonging to the field of combustible gas alarms. The system comprises a smoke sensor, an analog-to-digital converter, a controller, a central processor, a display and a buzzer. The smoke sensor, the analog-to-digital converter, the central processor and the buzzer are successively connected. The controller, the central processor and the display are successively connected. The system solves the problem of a gas cooker in the prior art that due the change of the gas source pressure during combustion, combustion gas is left inside a cabinet and may cause exhaust gas deflagration. Thus the combustion gas leakage alarm system is provided.
Description
Technical field
The utility model belongs to flammable gas alarm field, is specifically related to a kind of fuel gas leak alarm systems.
Background technology
Modern kitchen generally adopts taking embedded gas range as main, in the time that itself and cabinet are installed, must be so inserted installation.Can improve the clean and clean and tidy of kitchen operation table top although install like this, but due to inserted installation requirement, the coupling arrangement of gas kitchen ranges and source of the gas just must be hidden under cabinet, cabinet inside relatively seals, and gas kitchen ranges variation due to bleed pressure in combustion process, can be in the imperfect combustion combustion gas of cabinet internal reservoir part, the long dangerous consequences such as waste gas detonation that easily cause of time one.
Utility model content
The technical problems to be solved in the utility model is the variation due to bleed pressure in combustion process for current gas kitchen ranges, makes the combustion gas of the inner residue of cabinet, causes the defect of waste gas detonation, and a kind of fuel gas leak alarm systems is provided for this reason.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
Fuel gas leak alarm systems, comprises smoke detector, analog to digital converter, controller, central processing unit, display and hummer, and smoke detector, analog to digital converter, central processing unit and hummer are connected successively, and controller, central processing unit and display are connected successively;
Also comprise gas sensor, the first Sheffer stroke gate, the second Sheffer stroke gate, accumulator, triode, the 4th resistance, the 5th resistance, the second electric capacity, hummer and variable resistor, the positive pole of accumulator is connected with the first electrode resistance of gas sensor, the second electrode resistance of gas sensor is connected with the first input end of the first Sheffer stroke gate, the positive pole of accumulator is connected with the internal resistance of gas sensor by variable resistor, the output terminal of the first Sheffer stroke gate is connected with first input end and second input end of the second Sheffer stroke gate respectively, the second input end of the first Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance by the 4th resistance, the output terminal of the second Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance by the second electric capacity, the output terminal of the second Sheffer stroke gate is connected with the base stage of triode, the collector of triode is connected with the positive pole of accumulator, the emitter of triode is connected with hummer.
Adopt the utility model fuel gas leak alarm systems to there is following technique effect:
Smoke detector is for gathering the gas concentration in combustion gas cabinet, form with analog electrical signal stores, then be converted to digital signal by analog to digital converter, this digital signal is input to central processing unit, if gas concentration is too high, central processing unit output signal, to hummer, makes hummer send chimes of doom, and reminding user has gas leak; The gas concentration that display gathers smoke detector shows, is convenient to user and observes; Controller is for controlling the duty of whole warning system, such as start and stop.
The internal resistance of gas sensor is according to the difference of institute's adsorbed gas concentration and resistance difference, the first Sheffer stroke gate, the second Sheffer stroke gate, the 4th resistance, the 5th resistance and the second electric capacity composition multivibrator, when the concentration of combustion gas is in allowed band when (lower than limit value), resistance between the first electrode resistance and second electrode resistance of gas sensor is larger, the voltage of the first input end of the first Sheffer stroke gate is lower, multivibrator is not worked, and loudspeaker is not sounded.In the time that the concentration of combustion gas transfinites, the resistance between the first electrode resistance and second electrode resistance of gas sensor declines, and makes the first input end voltage of the first Sheffer stroke gate higher, and multivibrator work, from the output terminal outputting oscillation signal of the second Sheffer stroke gate.This signal, after triode amplifies, promotes loudspeaker and sends chimes of doom.Regulate variable-resistance resistance, the magnitude of voltage between the first electrode resistance and second electrode resistance of change gas sensor, thereby the initial voltage of change gas sensor, and then the susceptibility to combustion gas of change warning system.
Brief description of the drawings
Fig. 1 is the structural drawing of the embodiment of the utility model fuel gas leak alarm systems.
Fig. 2 is the circuit theory diagrams of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, the utility model fuel gas leak alarm systems, specifically comprise: smoke detector, analog to digital converter, controller, central processing unit, display and hummer, smoke detector, analog to digital converter, central processing unit and hummer are connected successively, and controller, central processing unit and display are connected successively.
In specific implementation process, warning system is arranged on below the body disc of gas kitchen ranges, by adopting the integrating device of smoke detector and hummer, in the time that gas leakage or gas concentration reach certain limit, send buzzing and report to the police, reminding user is examined the coupling arrangement between car source of the gas and gas-cooker.
In addition, as shown in Figure 2, the circuit component of the present embodiment comprises gas sensor, the first Sheffer stroke gate, the second Sheffer stroke gate, accumulator GB, triode VT, the 4th resistance R 4, the 5th resistance R 5, the second capacitor C 2, hummer BL and variable resistor R2, the positive pole of accumulator GB is connected with the first electrode resistance A of gas sensor, the second electrode resistance B of gas sensor is connected with the first input end of the first Sheffer stroke gate, the positive pole of accumulator GB is connected with the internal resistance of gas sensor by variable resistor R2, the output terminal of the first Sheffer stroke gate is connected with first input end and second input end of the second Sheffer stroke gate respectively, the second input end of the first Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance R 5 by the 4th resistance R 4, the output terminal of the second Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance R 5 by the second capacitor C 2, the output terminal of the second Sheffer stroke gate is connected with the base stage of triode VT, the collector of triode VT is connected with the positive pole of accumulator GB, the emitter of triode VT is connected with hummer BL.
The first Sheffer stroke gate, the second Sheffer stroke gate, the 4th resistance R 4, the 5th resistance R 5 and the second capacitor C 2 form multivibrator, when the concentration of combustion gas is in allowed band when (lower than limit value), between the first electrode resistance A of gas sensor and the second electrode resistance, the resistance of B is larger, the voltage of the first input end of the first Sheffer stroke gate is lower, multivibrator is not worked, and loudspeaker BL does not sound.In the time that the concentration of combustion gas transfinites, the resistance between the first electrode resistance A and the second electrode resistance B of gas sensor declines, and makes the first input end voltage of the first Sheffer stroke gate higher, and multivibrator work, from the output terminal outputting oscillation signal of the second Sheffer stroke gate.This signal, after triode VT amplifies, promotes loudspeaker BL and sends chimes of doom.Regulate the resistance of variable resistor R2, the magnitude of voltage between the first electrode resistance A and the second electrode resistance B of change gas sensor, thereby the initial voltage of change gas sensor, and then the susceptibility to combustion gas of change warning system.
For a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (1)
1. fuel gas leak alarm systems, it is characterized in that: comprise smoke detector, analog to digital converter, controller, central processing unit, display and hummer, smoke detector, analog to digital converter, central processing unit and hummer are connected successively, and controller, central processing unit and display are connected successively;
Also comprise gas sensor, the first Sheffer stroke gate, the second Sheffer stroke gate, accumulator, triode, the 4th resistance, the 5th resistance, the second electric capacity, hummer and variable resistor, the positive pole of accumulator is connected with the first electrode resistance of gas sensor, the second electrode resistance of gas sensor is connected with the first input end of the first Sheffer stroke gate, the positive pole of accumulator is connected with the internal resistance of gas sensor by variable resistor, the output terminal of the first Sheffer stroke gate is connected with first input end and second input end of the second Sheffer stroke gate respectively, the second input end of the first Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance by the 4th resistance, the output terminal of the second Sheffer stroke gate is connected with the output terminal of the first Sheffer stroke gate with the 5th resistance by the second electric capacity, the output terminal of the second Sheffer stroke gate is connected with the base stage of triode, the collector of triode is connected with the positive pole of accumulator, the emitter of triode is connected with hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306663.1U CN203894915U (en) | 2014-06-10 | 2014-06-10 | Combustion gas leakage alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306663.1U CN203894915U (en) | 2014-06-10 | 2014-06-10 | Combustion gas leakage alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894915U true CN203894915U (en) | 2014-10-22 |
Family
ID=51721288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420306663.1U Expired - Fee Related CN203894915U (en) | 2014-06-10 | 2014-06-10 | Combustion gas leakage alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652311A (en) * | 2014-10-30 | 2017-05-10 | 陈国栋 | Kitchen safety detection system employing digital logic circuit |
-
2014
- 2014-06-10 CN CN201420306663.1U patent/CN203894915U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652311A (en) * | 2014-10-30 | 2017-05-10 | 陈国栋 | Kitchen safety detection system employing digital logic circuit |
| CN106652312A (en) * | 2014-10-30 | 2017-05-10 | 陈国栋 | Working method of kitchen safety detection system employing digital logic circuit |
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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 |
Granted publication date: 20141022 Termination date: 20150610 |
|
| EXPY | Termination of patent right or utility model |