CN86209429U - Gas and smoke alarm - Google Patents
Gas and smoke alarm Download PDFInfo
- Publication number
- CN86209429U CN86209429U CN 86209429 CN86209429U CN86209429U CN 86209429 U CN86209429 U CN 86209429U CN 86209429 CN86209429 CN 86209429 CN 86209429 U CN86209429 U CN 86209429U CN 86209429 U CN86209429 U CN 86209429U
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- CN
- China
- Prior art keywords
- gas
- controllable silicon
- model
- semiconductor sensor
- utility
- 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.)
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Abstract
The utility model relates to a device for detecting the carbon monoxide, the carbon dioxide, the methane and the smoke. The device is composed of a semiconductor sensor, a controllable silicon pipe, a buzzer, etc. The resistance value of the semiconductor sensor is very large under the normal situation, the circuit has no electric current to pass, once the gas and smoke with the finite concentration are accepted, the resistance value of the semiconductor sensor is dropped down. When the circuit generates the electric current, the controllable silicon is triggered, the controllable silicon is conducted, which causes the buzzer to get the electricity and send out the beep to alarm. The utility model has the advantages of easy use, safety, low cost, less power consumption and long service life.
Description
The utility model belongs to a kind of gas detection warning device, can detect certain density inflammable gas and the smog that exists in the air and gives the alarm.
Be extensive use of various fuel such as coal gas, natural gas, liquefied petroleum gas (LPG) and coal in industrial and agricultural production and the people's daily life, all gases fuel is in a single day blunt excessive, causes that very easily fire and intoxication accident take place.Use coal also very easily to cause fire, when burning is insufficient, also can produces carbon monoxide and cause people's poisoning, cause the loss of property and life.Very limited to this risk prevention instruments at present, for example in coal gas, add and the gas of special odor is arranged so that when coal gas Vent reveals, cause people's vigilance, but leave the outer shallow place of coal gas slightly a little further, people just are difficult for finding, for preventing fire, adopt photoelectric detection system at present usually, in addition so that when smog produces, can in time find, but this apparatus cost height is difficult to popularize.
The utility model is a kind of gas and Smoke Detection warning device of being made up of various electronic components, and when carbon monoxide, carbon dioxide, methane and smog reached finite concentration in the air, it can in time send a kind of alerting signal.
The utility model is formed (figure) by a semiconductor transducer TGS, thyristor SCR, two biasing resistors, hummer and power supply, and gauge tap K is equipped with at the power supply place.Its action principle is: work as carbon monoxide, when gas such as carbon dioxide, methane and smog reached finite concentration, the resistance of semiconductor transducer TGS inside reduced, electric current is passed through, give electric signal of controllable silicon SCR, directly trigger the control utmost point of controllable silicon SCR, make the controllable silicon conducting.Hummer SD gets the electric buzz that sends like this, and the warning personnel are indoor to exist certain density carbon monoxide, and carbon dioxide, methane or smog are so that in time take measures.Crucial part of the present utility model is to have adopted a semiconductor transducer TGS, and it can accept all gases sensitively and smog changes original resistance.If in silicon controlled control extremely, adorn a potentiometer W, then can select the detection sensitivity that suits by the resistance of adjusting potentiometer.If at the two ends of hummer capacitor C in parallel
1, can stablize the voltage at hummer two ends.
The utility model has outstanding advantages such as more safe and reliable, easy, little power consumption, cost are low, long service life than the means of existing various detection carbon monoxide, carbon dioxide, methane and smog, can accurately detect the existence of above-mentioned gas and smog and gives the alarm in various occasions.
Narrate an embodiment in conjunction with the accompanying drawings.
Semiconductor transducer adopts the TRS-202 model among the embodiment, and the silicon controlled model is C106Q1, resistance R
1Be 1 watt of 1.7 kilo-ohms of metalfilmresistor, resistance R
2Be 1 watt of 6.7 kilo-ohms of metalfilmresistor, potentiometer W is 1 watt of 30 kilo-ohms of potentiometer, and capacitor is 16 volt of 100 microfarad, and the operating voltage of hummer is 12 volts.
Claims (3)
1, a kind of detection and warning device that is used to detect carbon monoxide, carbon dioxide, methane and smog is characterized in that: the circuit of this device is by a semiconductor transducer, a thyristor, and two biasing resistors, hummer and power supply are formed.
2, a kind of detection as claimed in claim 1 and warning device is characterized in that: be connected to a potentiometer in the control extremely of thyristor.
3, a kind of as claim 1 and 2 described detection and warning devices, it is characterized in that: be parallel with a capacitor in the both sides of hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209429 CN86209429U (en) | 1986-11-17 | 1986-11-17 | Gas and smoke alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209429 CN86209429U (en) | 1986-11-17 | 1986-11-17 | Gas and smoke alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86209429U true CN86209429U (en) | 1987-07-22 |
Family
ID=4811324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86209429 Ceased CN86209429U (en) | 1986-11-17 | 1986-11-17 | Gas and smoke alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86209429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390827C (en) * | 1996-11-27 | 2008-05-28 | Slc技术公司 | Fire and smoke detection and controlling system thereof |
-
1986
- 1986-11-17 CN CN 86209429 patent/CN86209429U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390827C (en) * | 1996-11-27 | 2008-05-28 | Slc技术公司 | Fire and smoke detection and controlling system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19880203 |