CN2202889Y - Fire back proof device for gas water heater - Google Patents
Fire back proof device for gas water heater Download PDFInfo
- Publication number
- CN2202889Y CN2202889Y CN 94243139 CN94243139U CN2202889Y CN 2202889 Y CN2202889 Y CN 2202889Y CN 94243139 CN94243139 CN 94243139 CN 94243139 U CN94243139 U CN 94243139U CN 2202889 Y CN2202889 Y CN 2202889Y
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- gas
- gas water
- magnetic valve
- electromagnetic valve
- 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 fire back proof device for gas water heaters, comprising a temperature sensor, an electromagnetic valve, a conducting wire and a power supply battery. The temperature sensors are arranged on the baffle plate between every two gaseous fuel jet bores of the gaseous fuel distribution tube. The temperature sensors, the battery and the fixing magnet coil of the electromagnetic valve are connected into a return circuit in series. The utility model uses the electromagnetic valve of the most gas water-heaters as the actuator to cut off the gaseous fuel source. The temperature sensor has small size, sensitive response ability, simple structure, quick and effective performing ability, and low cost.
Description
The utility model relates to the safety guard of gas heater, particularly about the fireproof tempering device of gas heater.
Combustion gas tool such as gas-cooker or gas heater, flame claims tempering along the air inlet burning of burner when unusual when combustion gas tool surrounding air flows, tempering phenomenon may cause contingency, does not still have better safeguard procedures at present.CN2097363U proposes a kind of gaseous fuel anti-backfire burner, it contains a little water with a container, the device of plugging in container and joining with a straight tube with air inlet pipe, the method obviously can not be used in the gas heater of complex structure compactness, a kind of suitable device that prevents the gas heater tempering of therefore anxious palpus.
The purpose of this utility model be a kind of simple in structure, reaction of design fast, be applicable to the anti-backfire automatic safety device of installing and using in the gas heater.
The technical scheme that the utility model adopted is, the gas heater fireproof tempering device, it comprises temperature sensor, magnetic valve, lead and power supply, it is characterized in that temperature sensor is located on the baffle plate between per 2 combustion gas squit holes of gas-distribution pipe, temperature sensor, power supply and magnetic valve are decided magnet coil and are connected into the loop.
The advantage of above-mentioned design is to utilize the existing magnetic valve of gas heater to make the source of the gas that executing agency cuts off combustion gas, temperature sensor adopts the little reaction of volume double-metal thermal relay fast, its volume is little light, can be installed on the baffle plate between the minimum gas jet orifice in leeway, space, in case be the burning things which may cause a fire disaster starting point of tempering herein, because the hurried rising bimetal leaf of temperature contact separation, power circuit disconnects dead electricity, the moving magnet valve rod of magnetic valve is by spring reset, the source of the gas of automatic self-closing gas pipe.
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is circuit connecting relation and magnetic valve working state schematic representation
The structure and the course of work of embodiment are described below in conjunction with accompanying drawing
This fireproof tempering device is made up of temperature sensor (1), magnetic valve (8) and battery case (6), the ignition device that has been equipped with for most gas heaters of magnetic valve (8) and battery case (6) wherein, it and pulse igniter (7) also are unified into pulse ignition device.Temperature sensor (1) is selected double-metal thermal relay for use, they are contained on the plate washer (9) of combustion gas ejiction opening adjacency of main burner gas-distribution pipe (2), establish 1 temperature sensor (1) between per 2 combustion gas ejiction openings, temperature sensor (1) setting is decided by combustion gas ejiction opening quantity, Figure 1 shows that 4 double-metal thermal relay.The 1st temperature sensor one output connected with following 1 temperature sensor one output, last 1 temperature sensor one output links to each other with battery case (6) negative pole, and the battery case positive pole is decided to become series loop with the 1st another output of temperature sensor after magnet coil (10) is in series with magnetic valve behind pulse igniter (7).
Below in conjunction with Fig. 2 the course of work is described, bi-metal temperature relay (1) just often is closed in temperature, entire circuit conducting owing to the closure of K switch, the magnetic force of deciding magnet coil (10) energising generation holds moving magnet (11), goes out gas port (13) to open, this is a combustion gas normal combustion situation, this moment, burning was to carry out at burner sheet (4), around double-metal thermal relay, also was not burn near the combustion gas ejiction opening therefore, temperature is in normally, generally below 70 ℃.When the gas heater air-flow excessive; if any wind when the burner sheet; possible burner sheet combustion gas is not enough and do not fire; combustion gas spout on the gas-distribution pipe (2) fire burns and is produced tempering; be in that near this combustion gas spout TEMP actuator temperature rises more than 80 ℃ immediately even very high; bimetal leaf separately makes the power circuit outage; magnetic valve is decided magnet coil (10) dead electricity; lose magnetic pull; reset and valve stem seal pad (12) is pushed to gas outlet (13) turn off source of the gas by stage clip (14); tempering is no longer burnt, thus protection water heater and user's safety.
Claims (3)
1, gas heater fireproof tempering device, it comprises temperature sensor, magnetic valve, lead and power supply is characterized in that temperature sensor is located on the plate washer between 2 combustion gas ejiction openings of gas-distribution pipe, temperature sensor, magnetic valve decide magnet coil and power supply is connected into the loop.
2, gas heater fireproof tempering device as claimed in claim 1, it is characterized in that the 1st temperature sensor one output connect with next temperature sensor one output, last temperature sensor one output links to each other with battery case (6) negative pole, and anode is connected into the loop with the 1st another output of temperature sensor after pulse igniter (7) and magnetic valve are decided magnet coil (10) and contacted mutually.
3, gas heater fireproof tempering device as claimed in claim 1 is characterized in that temperature sensor is the bi-metal temperature relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243139 CN2202889Y (en) | 1994-10-13 | 1994-10-13 | Fire back proof device for gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243139 CN2202889Y (en) | 1994-10-13 | 1994-10-13 | Fire back proof device for gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2202889Y true CN2202889Y (en) | 1995-07-05 |
Family
ID=33849574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94243139 Expired - Fee Related CN2202889Y (en) | 1994-10-13 | 1994-10-13 | Fire back proof device for gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2202889Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726093B (en) * | 2010-01-22 | 2012-07-11 | 美的集团有限公司 | Constant temperature electric water heater |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
-
1994
- 1994-10-13 CN CN 94243139 patent/CN2202889Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726093B (en) * | 2010-01-22 | 2012-07-11 | 美的集团有限公司 | Constant temperature electric water heater |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
| CN110579022B (en) * | 2018-06-07 | 2022-03-18 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and anti-backfire control method thereof |
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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 |