CN2874282Y - Gas safety protector - Google Patents
Gas safety protector Download PDFInfo
- Publication number
- CN2874282Y CN2874282Y CN 200520117239 CN200520117239U CN2874282Y CN 2874282 Y CN2874282 Y CN 2874282Y CN 200520117239 CN200520117239 CN 200520117239 CN 200520117239 U CN200520117239 U CN 200520117239U CN 2874282 Y CN2874282 Y CN 2874282Y
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- CN
- China
- Prior art keywords
- contact
- thermocouple
- magnetic valve
- gas safety
- safety protector
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- 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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- Thermally Actuated Switches (AREA)
- Control Of Combustion (AREA)
Abstract
The utility model relates to a fuel gas protector comprising a flameout protector composed of a thermocouple and an electromagnetic valve. The utility model is characterized in that an overheating protection temperature controlled switch with one group of switch contact action pushed by a bimetallic strip brake is arranged between electromagnetic valves and electrical control loop is formed through the connection of current produced by thermocouple passing the bimetallic strip brake and electromagnetic induction coil inside electromagnetic valve. The utility model can both realize flameout protection and overheating protection. Moreover, the utility model features simple structure, few components and free of electronic circuit structure and can work stably under damp and changeable conditions. The utility model has the dramatic advantages of safety, reliability, economy, easy promotion and application etc.
Description
Technical field
The utility model relates to a kind of protective device of combustion gas tool safe handling.
Background technology
Existing household gas apparatus safety guard kind is more, all adopts electronic circuit to control usually, and electronic circuit controller adopts components and parts many, complex structure, and operational failure rate height under wet environment does not have good safeguard protection effect.CN2167321Y proposes a kind of bimetal leaf safety control of gas heater, and it is located at bimetal leaf in the switch hole of water heater as switch, detects anoxic or when overheated, the bimetal leaf action makes the closed electromagnetic valve source of the gas.This device comprises bimetal release device and operating circuit thereof, its operating circuit comprises the control circuit of metering circuit, firing circuit and the work of control magnetic valve, still there is many, the complex structure of components and parts in the complex control system that most this control circuits is formed, problems such as poor reliability, under environment such as high humidity, oil smoke be many, electronic component often lost efficacy, faults such as decreasing insulating, thereby influence is promoted the use of normally.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, reduce electronic devices and components, reliability height, safe and reliable gas safety protector as far as possible.
Design of the present utility model is; gas safety protector; it comprises the flame-out safety guard that thermocouple and magnetic valve are formed; it is characterized in that also establishing between thermocouple and magnetic valve the overtemperature protection temperature detect switch (TDS) that is promoted one group of switch contact action by the bimetal leaf actuator, the electric current that thermocouple produces connects into electric control loop by one group of make and break contact of temperature detect switch (TDS) and the electromagnetic induction coil in the magnetic valve.
Temperature detect switch (TDS) promotes one group of contact switch that is connected with thermocouple circuit by beating in the middle of the butterfly shaped dual metal sheet, the logical metal fixed head of the one side of temperature detect switch (TDS) closely contacts with thermal source.When flame extinguishes for a certain reason, as wind, anoxic etc., the electromotive force in the thermocouple descends with temperature and disappears, and the electromagnetic attraction of magnetic valve is also faded away, and valve head restores owing to the compression spring and combustion gas is closed; Make bi-metal plate deformed owing to external temperature is overheated when being located at the other temperature detect switch (TDS) of calandria, the current loop that is produced by thermocouple is cut off in the movable contact action, magnetic valve disappearance magnetic field suction, and valve head compression spring restores and combustion gas is closed.Play the flame-out dual security protection effect of overtemperature protection and combustion gas, the utility model components and parts are few, and no electronic circuit is simple in structure, can be under humidity and changeable environmental condition reliably working, have safe and reliablely, be beneficial to the remarkable advantage of applying.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the 2nd example structure schematic diagram.
Fig. 3 is the 3rd example structure schematic diagram.
Fig. 4 is the 1st and the 3rd embodiment temperature detect switch (TDS) structural representation.
Fig. 5 is the 2nd embodiment temperature detect switch (TDS) structural representation.
Fig. 6 is the electromagnetic valve structure profile.
The specific embodiment
The 1st embodiment of the present utility model as shown in Figure 1, gas safety protector comprises flame-out safeguard protection and overheated safeguard protection, the overtemperature protection temperature detect switch (TDS) is made up of thermocouple 1, bimetal leaf actuator 7 and magnetic valve 14.The positive pole of thermocouple connects on the contact tube 2; negative pole is passed in the contact tube 2 by enamel insulated wire and is connected with the tie-in line 6 of bimetal leaf actuator 7; after coming out by the leading-out wire 6 of bimetal leaf actuator; pass contact tube 2 by enamel insulated wire 8 again; the contact tube 2 of the turnover signal of telecommunication is fixed on the mounting plate 4 by two buckles 10; mounting plate fixedly mounts hole 5 by it and is fixed on the wall near thermal source, needs the position detecting and carry out overtemperature protection so that bimetal leaf actuator 7 can be adjacent to as far as possible.The mounting plate of present embodiment only plays fixing and heat transfer effect, for positive pole conducting on copper conductor tube with thermocouple, temperature detect switch (TDS) is being established a metal connecting sheet 9 that connects contact tube near an end of the contact tube 2 of bimetal leaf actuator 7, the semicircular ring at these metal connecting sheet two ends and contact tube 2 closely are welded to connect.For making contact tube 2 and mounting plate electric insulation, the contact tube that is located on the mounting plate puts insulating sleeve 3.Contact tube 2 is connected with axle core joint 13 negative poles of double-thread head 12 by silicon rubber end socket 11, and be connected with a utmost point of the induction coil 51 of magnetic valve 14, positive electrode current is connected outward with outside the double-thread head 12 by contact tube, and is connected with another utmost point of magnetic valve 14 induction coils 51.The probe 1 of thermocouple is located on the flame burner, the positive pole of thermocouple is by contact tube 2, metal connecting sheet 9, again through the utmost point of contact tube 2 to magnetic valve, negative pole is by contact tube 2 interior sound contacts to bimetallic actuator 7, and another utmost point toward contact tube 2 to magnetic valve forms series loop again.
Figure 2 shows that the 2nd example structure schematic diagram.Its structure and the 1st embodiment are basic identical; institute's difference is that the structure of bimetal leaf actuator 7 of overtemperature protection temperature detect switch (TDS) is different; its difference is referring to shown in Figure 5; bimetal leaf actuator 7 is by butterfly shaped dual metal sheet 27; perpendicular to the push rod 34 in the middle of the butterfly shaped dual metal sheet, dish-shaped ceramic cap 37 and peripheral conductive plate 26, movable contact spring 38, movable contact 42, static contact spring piece 44, stationary contact 43 are formed.The top of vertical push rod 34 holds mutually with the mid point of movable contact spring 38, and the movable contact spring end is provided with and the stationary contact 43 movable movable contacts 42 that contact.The push rod 34 that arches upward when bimetallic braking plate 27 is heated lifts movable contact spring 38, makes the sound contact separation of movable contact spring end.
Figure 6 shows that magnetic valve 14 partial structure cutaway views, it is made up of magnetic valve double thread 53, solenoid 51, compression spring 15 and tower sealing gasket 16, double thread 53 ends are U sections core 50 fixedly, its end is established magnetic conductive board 49, solenoid 51 is wrapped in outside the U sections core 50, when coil has electric current, electromagnetic core 50 internal magnetic fields hold magnetic conductive board 49, compression spring 15 is compressed, make valve open in the valve body, when coil losing electricity, electromagnetic force disappears, compression spring 15 resets, and closes source of the gas in the gas valve body.
The whole structure of an embodiment as shown in Figure 3 again, thermocouple 1 is connected in series with bimetal leaf actuator 7 by contact tube 2, the positive pole of thermocouple 1 connects contact tube 2, contact tube 2 joins with mounting plate 20, mounting plate 20 two ends with link to each other with electrode potential, fixing hole 5 is established in the centre, and to be convenient to be close to heater other and tighten up.The mounting plate of present embodiment is as electric conductor, simultaneously again as the fixed installation effect, the lead 8 that the negative pole of thermocouple 1 is insulated by appearance passes contact tube 2 and is connected with the pin 6 of bimetallic actuator 7, through passing contact tube 2 again behind one group of contact, be connected with negative pole with the axle core joint 13 of double-thread head 12 by silicone rubber seal head 11, and be connected with a utmost point of magnetic valve 14 induction coils 51, anodally join with double-thread head and be connected with another utmost point of magnetic valve induction coil by contact tube.The thermal probe 1 of thermocouple is located on the flame burner, the positive pole of thermocouple arrives magnetic valve one utmost point through contact tube 2 again by contact tube 2, mounting plate 20, negative pole by in the contact tube 2 through the sound contact of bimetallic actuator 7 again by contact tube 2 to another utmost point of magnetic valve, the formation electric control loop.
Figure 4 shows that the used bimetallic actuator of the 1st and the 3rd embodiment, bimetallic actuator 7 is by butterfly shaped dual metal sheet 27, dish-shaped electric conductor 29 and peripheral conductive plate 26, movable contact 25, stationary contact 24, and input and output lead 30,33 is formed.The movable contact 25 of butterfly shaped dual metal sheet 27 center protrusion and dish-shaped electric conductor 29 middle outstanding the fixed contact 24 corresponding and movable contacts of energy, the recessed cover of butterfly shaped dual metal sheet 27 is in conductive plate 26, the conductive plate excircle closely links to each other with current output terminal, do not contact between butterfly shaped dual metal sheet 27 and the dish-shaped electric conductor 29 and partly establish middle level dead ring 23, its outer rim extends upward to insulation ring set 22.Dead ring and extension are selected the polyimide resin moulding for use, and dish-shaped electric conductor 29 tops and input lead 33 welding are fixing, add epoxy resin layer 31 sealings on it.
Thermocouple 1 probing shell is the fire resistant special type stainless steel tube, the thermo wires of thermocouple adopts punching press to dock with lead 30,33, reduce contact resistance between the contact, the outside seals with Kapton, prevent short circuit between tie point and the contact tube, establish silicone rubber seal head 11 between magnetic valve 14 and the bimetal leaf actuator 7 with high temperature resistant and maintenance good sealing property, magnetic valve connector 53 adopts double thread, to improve the magnetic valve functional reliability, gas valve seal head 16 adopts tower sealing heat to prevent gas leakage, improves the product safety performance.
When thermocouple probe is subjected to flame heat; between its hot junction and the cold junction because the temperature difference produces electromotive force; form the loop by the bimetal leaf actuator; make magnetic valve under the effect of in short-term external force and internal magnetic field; be in attracting state; fuel gas path is unimpeded; be located at the heating state of the detection gas-fired equipment of the other bimetal leaf actuator of heater this moment; when heter temperature surpassed the activation temperature of bimetal leaf setting, the surface configuration of butterfly shaped dual metal sheet changed, and made movable contact break away from fixed contact; cut off current loop; magnetic valve loses suction, and air valve is compressed spring reset, closes gas circuit; overheat protective function is carried out in fray-out of flame.When heter temperature just often, butterfly shaped dual metal sheet restores, movable contact closely contacts the formation current loop with fixed contact.If gas flame is when being extinguished by situations such as wind or anoxics suddenly, the electromotive force on the thermocouple probe descends gradually, and the magnetic attraction of magnetic valve also weakens thereupon, and compression spring reset in the gas valve and close gas circuit being finished the flame-out safety protection function that closes gas check valve automatically.
Claims (7)
1, a kind of gas safety protector; it comprises the flame-out safety guard that thermocouple and magnetic valve are formed; it is characterized in that also establishing between thermocouple (1) and magnetic valve (14) the overtemperature protection temperature detect switch (TDS) that is promoted one group of switch contact action by the bimetal leaf actuator, the cold junction of thermocouple connects into electric control loop by one group of make and break contact of temperature detect switch (TDS) and the electromagnetic induction coil in the magnetic valve.
2, gas safety protector according to claim 1 is characterized in that temperature detect switch (TDS) promotes one group of contact switch that is connected with thermocouple circuit by beating in the middle of the butterfly shaped dual metal sheet and forms.
3, gas safety protector according to claim 1 is characterized in that bimetal leaf actuator (7) by butterfly shaped dual metal sheet (27), and dish-shaped electric conductor (29) and peripheral conductive plate (26), movable contact (25), stationary contact (24) are formed.
4, gas safety protector according to claim 1; it is characterized in that bimetal leaf actuator (7) by butterfly shaped dual metal sheet (27), form perpendicular to push rod (34) in the middle of the butterfly shaped dual metal sheet and peripheral conductive plate (26), movable contact spring (38), movable contact (42), static contact spring piece (44), stationary contact (43).
5, gas safety protector according to claim 1 is characterized in that the overtemperature protection temperature detect switch (TDS) establishing the metal connecting sheet (9) that connects contact tube near an end of the contact tube (2) of bimetallic actuator (7).
6, gas safety protector according to claim 1 is characterized in that thermocouple (1) probing shell is the fire resistant special type stainless steel tube.
7, gas safety protector according to claim 1 is characterized in that magnetic valve (14) connector is a double thread, and the gas sealing head (16) of magnetic valve is tower sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117239 CN2874282Y (en) | 2005-12-15 | 2005-12-15 | Gas safety protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117239 CN2874282Y (en) | 2005-12-15 | 2005-12-15 | Gas safety protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874282Y true CN2874282Y (en) | 2007-02-28 |
Family
ID=37780881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520117239 Expired - Fee Related CN2874282Y (en) | 2005-12-15 | 2005-12-15 | Gas safety protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874282Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109965693A (en) * | 2017-12-27 | 2019-07-05 | 九阳股份有限公司 | A kind of safe electric kettle |
-
2005
- 2005-12-15 CN CN 200520117239 patent/CN2874282Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109965693A (en) * | 2017-12-27 | 2019-07-05 | 九阳股份有限公司 | A kind of safe electric kettle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070228 Termination date: 20121215 |