CN2273378Y - Backfire safety controller for gas-combustion apparatus - Google Patents
Backfire safety controller for gas-combustion apparatus Download PDFInfo
- Publication number
- CN2273378Y CN2273378Y CN 96238119 CN96238119U CN2273378Y CN 2273378 Y CN2273378 Y CN 2273378Y CN 96238119 CN96238119 CN 96238119 CN 96238119 U CN96238119 U CN 96238119U CN 2273378 Y CN2273378 Y CN 2273378Y
- Authority
- CN
- China
- Prior art keywords
- triode
- transistor
- gas
- electrode
- relay
- 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
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Abstract
The utility model relates to a backfire safety controller for a gas-combustion apparatus. A flame detecting probe (1) is arranged in the front 3-12 mm position of the burner injection nozzle. The flame detecting probe (1) is connected with a resistor (R< 1 >) in series by a conducting wire and then is connected with the base electrode of the transistor (G< 1 >). A collecting electrode is connected with the burner injection nozzle (3) by capacitors (C< 1 >), (C< 2 >) and a resistor (R< 3 >). Simultaneously, the collecting electrode is connected with the base electrode of the transistor (G< 3 >). The emitting electrode of the transistor (G< 1 >) is connected with the base electrode of the transistor (G< 2 >). The collecting electrode of the transistor (G< 2 >) is connected with the resistor (R< 3 >). The emitting electrode is connected with a relay (J) and a diode (D) by a (R< 2 >). The relay (J) and the other end of the diode (D) are all connected with the collecting electrodes of the transistors (G< 3 >), (G< 4 >). The emitting electrode of the transistor (G< 3 >) is connected with the base electrode of the transistor (G< 4 >). The emitting electrode of the transistor (G< 4 >) is connected with the injection nozzle (3).
Description
The utility model belongs to a kind of warning device, and exactly it is a kind of combustion gas tool tempering safety control.
Gas safe smooth combustion is the essential condition of gas combustion apparatus, because the combustion gas that China uses is of a great variety, and the composition difference, combustion characteristics is more inequality, the flame propagation velocity excursion is very big, the particularly very high combustion gas of hydrogen content in the combustion gas, and tempering tendentiousness is very big.By the burner of theoretical calculation Design, should smooth combustion, but owing to processing, many reasons such as combustion gas composition service condition variation are installed, tempering phenomenon appears often, had a strong impact on the work of equipment, what is more also can burning apparatus, cause major accidents such as fire.Also be not specifically designed to anti-backfire combustion gas tool tempering safety control at present.
The utility model purpose is to provide a kind of combustion gas tempering safety control, is installed in combustion gas tool suitable position, reaches prevention, prevents owing to the accident of tempering generation and the generation of fire, support equipment and personnel's safety.
The purpose of this utility model is achieved by the following scheme, it is made up of flame detector probe, lead, control device, it is characterized in that flame detector probe (1) is installed in preceding 3～12 millimeters places of burner nozzle, flame detector probe (1) is by lead series resistance (R
1) back and triode (G
1) base stage connect, colelctor electrode is by electric capacity (C
1), (C
2), resistance (R
3) be connected with burner nozzle (3), simultaneously also with triode (G
3) the base stage connection, triode (G
1) emitter stage and triode (G
2) the base stage connection, triode (G
2) colelctor electrode connection resistance (R
3), emitter stage is by resistance (R
2) be connected with diode (D) with relay (J), relay (J) and diode (D) other end all with triode (G
3), (G
4) colelctor electrode connect triode (G
3) emitter stage and triode (G
4) the base stage connection, triode (G
4) emitter stage is connected with nozzle (3).Diode (D) is in parallel with relay (J).Triode (G
1) colelctor electrode and triode G
3Series resistance R between base stage
4
The utility model has the advantages that simple in structurely, realize to avoid tempering to danger and accident that equipment causes effectively easily, ensured the safety of operator and equipment.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the utility model organigram.
Fig. 2 installs and uses view for the utility model.
Fig. 3 is the utility model circuit theory diagrams.
1 for blowout protection detects pin among the figure, and 2 is burner, and 3 is nozzle, and 4 is gas distribution pipe, and 5 is magnetic valve, and 6 is the gas inlet pipe road, and 7 is the flame detector probe, and 8 is insulator, and 9 are combustion gas tempering safety control, and 10 is gas control system.R is a resistance, and C is an electric capacity, and G is a triode, and D is a diode, and J is a relay.
The equal outsourcing of all electric elements in the utility model, the flame detector probe adopts resistant to elevated temperatures alloy manufacturing, get all the components and parts shown in Fig. 1 and Fig. 3 ready, on circuit board, install and get final product, install with reference to Fig. 2 during use with the flame detector probe is even good with reference to circuit theory diagrams shown in Figure 3.During the flame normal combustion, the nozzle place does not have tempering, not conducting of control circuit, G
1The base stage no-voltage, G
1, G
2, G
3And G
4All be in cut-off state, the relay J in the combustion gas tempering control device is failure to actuate, and normally closed point makes gas control system (10) normal power supply, and magnetic valve (5) is in opening, and combustion gas is normally circulated for burner (2) burning.When tempering, flame on the burner (2), be tempered to the preceding burning of nozzle (3), be arranged on the gas distribution pipe insulator (8) of fixing gas nozzle, stretch to the preceding flame detector probe (7) of nozzle (3) and touch flame, negative ions in the flame is done directed moving, and forms weak current and passes through R
1, triode G
1, G
2Base stage has electric current to pass through, and makes a point produce voltage, and this voltage makes G
3, G
4Conducting work, the b point voltage reduces, relay J work, normally closed point is opened, and cuts off the power supply of magnetic valve (5), and magnetic valve (5) cuts out, and the combustion gas in the Gas Pipe is turned off, and therefore combustion apparatus is protected.Simultaneously, blowout protection detector probe (7) detects less than flame, sends signal alarm or controls other control circuit.Implement the present invention, can carry out the tempering protection the fuel gas buring utensil that the tempering tendency takes place is arranged.Particularly to gas heater, the fuel gas buring equipment that middle-size and small-size gas fired-boiler equal travel time is long plays good safeguard protection effect.
Claims (3)
1, combustion gas tool tempering safety control, it is made up of flame detector probe, lead, control device, it is characterized in that, and flame detector probe (1) is installed in preceding 3～12 millimeters places of burner nozzle, and flame detector probe (1) is by lead series resistance (R
1) back and triode (G
1) base stage connect, colelctor electrode is by electric capacity (C
1), (C
2), resistance (R
3) be connected with burner nozzle (3), simultaneously also with triode (G
3) the base stage connection, triode (G
1) emitter stage and triode (G
2) the base stage connection, triode (G
2) colelctor electrode connection resistance (R
3), emitter stage is by resistance (R
2) be connected with diode (D) with relay (J), relay (J) and diode (D) other end all with triode (G
3), (G
4) colelctor electrode connect triode (G
3) emitter stage and triode (G
4) the base stage connection, triode (G
4) emitter stage is connected with nozzle (3).
2, combustion gas tool tempering safety control according to claim 1, it is characterized in that: diode (D) is in parallel with relay (J).
3, combustion gas tool tempering safety control according to claim 1 is characterized in that: triode (G
1) colelctor electrode and triode G
3Series resistance R between base stage
4
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238119 CN2273378Y (en) | 1996-08-14 | 1996-08-14 | Backfire safety controller for gas-combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238119 CN2273378Y (en) | 1996-08-14 | 1996-08-14 | Backfire safety controller for gas-combustion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273378Y true CN2273378Y (en) | 1998-01-28 |
Family
ID=33913517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238119 Expired - Fee Related CN2273378Y (en) | 1996-08-14 | 1996-08-14 | Backfire safety controller for gas-combustion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273378Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371078B (en) * | 2006-03-07 | 2010-11-03 | Itw工业组件有限责任公司（独个股东） | Device for lighting and controlling a burner in a household appliance |
-
1996
- 1996-08-14 CN CN 96238119 patent/CN2273378Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371078B (en) * | 2006-03-07 | 2010-11-03 | Itw工业组件有限责任公司（独个股东） | Device for lighting and controlling a burner in a household appliance |
| US8936018B2 (en) | 2006-03-07 | 2015-01-20 | Itw Industrial Components S.R.L. Con Unico Socio | Device for lighting and controlling a burner in a household appliance |
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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 |