CN2273417Y - Gas-combustion leakage alarming device - Google Patents
Gas-combustion leakage alarming device Download PDFInfo
- Publication number
- CN2273417Y CN2273417Y CN 96204272 CN96204272U CN2273417Y CN 2273417 Y CN2273417 Y CN 2273417Y CN 96204272 CN96204272 CN 96204272 CN 96204272 U CN96204272 U CN 96204272U CN 2273417 Y CN2273417 Y CN 2273417Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- alarming
- oscillatory
- gas
- oscillatory circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model relates to a gas leakage alarming device, which uses a gas sensor as a probe and uses an audible and visual alarming device. The utility model is characterized in that an oscillating circuit of an audible alarming horn is composed of a front oscillating circuit with lower frequencies and a rear oscillating circuit with higher frequencies, and a light emitting alarming diode is arranged between the two oscillating circuits; a manual switch is connected in series between the output end of the light emitting alarming diode and a positive power supply. Due to the structure, the alarming horn can be used as a gas alarming device and can be used as a door bell, and moreover, sounds are different when the alarming horn is used as a gas alarming device and a door bell; whether the state of alarming circuits is normal can be monitored through the manual switch. Thus, the utility model has multifunction.
Description
The utility model relates to a kind of Fuel Gas Leak Alarm.
The central component of Fuel Gas Leak Alarm is the air-sensitive sensing circuit, power circuit, amplifying circuit, oscillatory circuit, luminous warning diode and alarming horn also be equipped with simultaneously, because this Fuel Gas Leak Alarm generally is mounted in the kitchen, and alarm condition is accidental, minority, therefore, the user reflects that generally the purposes of this alarm is too single.
The purpose of this utility model provides a kind of multi-functional Fuel Gas Leak Alarm.
Solution of the present utility model is that described oscillatory circuit is made up of the preposition oscillatory circuit of lower frequency and the rearmounted oscillatory circuit of upper frequency, luminous warning diode is arranged between two oscillatory circuits, and between the output terminal of luminous warning diode is with positive supply manual switch of serial connection.
Further illustrate detailed content of the present utility model below in conjunction with drawings and Examples.
Fig. 1: frame principle figure of the present utility model;
The circuit theory diagrams of Fig. 2: embodiment.
As shown in the figure, Fuel Gas Leak Alarm described in the utility model also has power circuit, air-sensitive sensing circuit, amplifying circuit, oscillatory circuit, luminous warning diode (LED)
2With alarming horn r, and oscillatory circuit of the present utility model is made of described luminous warning diode (LED) the preposition oscillatory circuit of lower frequency and the rearmounted oscillatory circuit of upper frequency
2Be arranged between two oscillatory circuits, at luminous warning diode (LED)
2Output terminal with being connected in series a manual switch K between the positive supply, in the present embodiment, the preposition oscillatory circuit of described lower frequency is by the NAND gate circuit F of two series connection
3And F
4With the resistance R of being mated
5And capacitor C
5Form, the rearmounted oscillatory circuit of upper frequency is by triode BG two series connection, opposite polarity
1And BG
2Together with the triode BG that is positioned at front end
1Grid connect and the capacitor C of series connection mutually
8And resistance R
8Form, power circuit adopts known step-down rectifier filter regulator circuit, by transformer B, full bridge rectifier D
1-D
4, filter capacitor C
1With the integrated IC of voltage stabilizing
1Form, can add a LED in addition
1Make power light, the air-sensitive sensing circuit is by gas sensor QM, resistance R
2With variable resistor R
3Form, amplifying circuit then adopts two NAND gate circuit F
1, F
2Form.
The foregoing circuit structure has following characteristics, and one, manual switch can be used as doorbell switch and use, and by doorbell switch, the rearmounted oscillatory circuit and the alarming horn of upper frequency have been formed the doorbell switch circuit, make Fuel Gas Leak Alarm have the effect of doorbell; Two, the setting of two groups of oscillatory circuits can make the sound of loudspeaker when doing two kinds of purposes uses of warning and doorbell form difference; Three, the doorbell circuit that often uses can be used for monitoring whether some other circuit of Fuel Gas Leak Alarm are in normal condition; Four, luminous warning diode both can have been done the light crossing-signal use of gas leakage, and can be used as isolator simultaneously again and use, when preventing the manual switch conducting, the reverse pumping of electric current.Therefore, Fuel Gas Leak Alarm described in the utility model has had multiple function.
Claims (2)
1, a kind of Fuel Gas Leak Alarm, have power circuit, air-sensitive sensing circuit, amplifying circuit, oscillatory circuit, luminous warning diode and alarming horn, it is characterized in that: described oscillatory circuit is made up of the preposition oscillatory circuit of lower frequency and the rearmounted oscillatory circuit of upper frequency, luminous warning diode (LED
2) be arranged between two oscillatory circuits, and luminous warning diode (LED
2) output terminal with being connected in series a manual switch (K) between the positive supply.
2, Fuel Gas Leak Alarm according to claim 1 is characterized in that: the preposition oscillatory circuit of described lower frequency is by the NAND gate circuit (F of two series connection
3) and (F
4) with the resistance (R that is mated
5) and electric capacity (C
5) form, the rearmounted oscillatory circuit of upper frequency is by triode (BG two series connection, opposite polarity
1) and (BG
2) with the triode (BG that is positioned at front end
1) grid connect and the electric capacity (C of series connection mutually
8) and resistance (R
8) form,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204272 CN2273417Y (en) | 1996-02-13 | 1996-02-13 | Gas-combustion leakage alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204272 CN2273417Y (en) | 1996-02-13 | 1996-02-13 | Gas-combustion leakage alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273417Y true CN2273417Y (en) | 1998-01-28 |
Family
ID=33889599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96204272 Expired - Fee Related CN2273417Y (en) | 1996-02-13 | 1996-02-13 | Gas-combustion leakage alarming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273417Y (en) |
-
1996
- 1996-02-13 CN CN 96204272 patent/CN2273417Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109003597A (en) | Buzzer drive circuit and corresponding buzzer driving method | |
| CN201239027Y (en) | Electronic controller for water deficiency detection of pressure coffee-making machine | |
| CN102468583A (en) | Control circuit | |
| CN2273417Y (en) | Gas-combustion leakage alarming device | |
| CN208672708U (en) | Under-voltage detection device and the under-voltage detection device of DC power supply | |
| CN215952630U (en) | Domestic photovoltaic inverter environment monitoring device based on STM32 | |
| CN2206461Y (en) | Multifunctional gas alarm device | |
| CN2468026Y (en) | Automatic monitoring alarmer for noise | |
| CN2187313Y (en) | Safety power supply detector | |
| CN2201119Y (en) | Multifunction alarm | |
| CN2819342Y (en) | Quake alarming device | |
| CN211263600U (en) | Electrical detection device | |
| CN221083517U (en) | Intelligent electric heating towel rack | |
| CN217982546U (en) | Audio anti-interference circuit with LED indication | |
| CN212809380U (en) | Reminder for hanging paper tube | |
| CN2762385Y (en) | Intelligent leakage alarm socket | |
| CN201191767Y (en) | Electrical bicycle charger having smoke alarm | |
| CN207539675U (en) | A kind of multi-function exciter lamp | |
| CN205140145U (en) | Multi -functional alarm of outdoor electrical equipment box | |
| CN104732683B (en) | Low-consumption sound-light alarm circuit | |
| CN2056545U (en) | Single phase power supply plug with electric leakage alarming | |
| CN2161001Y (en) | Remote signalling sensing socket | |
| CN2745071Y (en) | Phase failure alarm for three-phase motor | |
| CN2188208Y (en) | Pocket coal gas sound and light alarm | |
| CN2311028Y (en) | Household multifunctional prompting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |