CN2182307Y - Full sealing electromagnetic valve of flameout protector for combustor - Google Patents
Full sealing electromagnetic valve of flameout protector for combustor Download PDFInfo
- Publication number
- CN2182307Y CN2182307Y CN 93243552 CN93243552U CN2182307Y CN 2182307 Y CN2182307 Y CN 2182307Y CN 93243552 CN93243552 CN 93243552 CN 93243552 U CN93243552 U CN 93243552U CN 2182307 Y CN2182307 Y CN 2182307Y
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- CN
- China
- Prior art keywords
- valve
- valve rod
- shell
- casing
- big envelope
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- Expired - Fee Related
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a full sealing electromagnetic valve for a flameout protector of combustors, which comprises an electric magnet, a working winding, an armature with a valve rod, a valve core with a reset spring, a casing and an envelope, wherein, the envelope is arranged between the casing and the valve core; both ends of the envelope are connected with the valve rod and the casing in a static seal mode to realize a fully sealed moving gap between the valve rod and the casing. The utility model solves the problem that in the electromagnetic valve of the flameout protector of the existing combustors, the magnetic suction effect of the junction surface of the electric magnet and the armature is weakened or even failed by pollution caused by that fuel gas intrudes into the unclosed moving gap between the casing and the valve rod. Therefore, the full sealing electromagnetic valve for a flameout protector of combustors has the advantages of reliable operation and long service life.
Description
The utility model relates to a kind of all-sealed solenoid valve that is used for burner blowout protection device.
Existing burner blowout protection device can be seen from Fig. 1 as the solenoid valve in the Chinese patent 92200875.It includes electromagnet 3, work winding 5, the armature 6 of band valve rod 7, the spool 8 and the shell 4 of the band Returnning spring 2 installed on valve rod.It is installed on the valve opening 9 of burner air valve cavity 1 by shell.Going up the push rod 10 of pushing on cavity 1 during igniting earlier rises spool 8, at this moment valve opening 9 is opened, the direction that combustion gas can be represented by solid arrow the figure from the top-right suction tude of cavity to the left bottom steam outlet pipe, is guided to burning head (being represented among the figure) by external pipeline through valve opening then.Combustion gas is when burning, and Yin Wendu raises and makes the thermocouple that is positioned at the burning head side reach out the valve electromotive force, and provides electric current to the work winding 5 of solenoid valve, thereby electromagnet 3 has attracted armature 6.Because armature, valve rod, spool are connected as a single entity, so push rod 10 can move down and reset and do not influence the aperture of valve opening 9.Put out fire as accident, the temperature of burning head descends immediately, the electromotive force on the thermocouple disappears thereupon, and armature is discharged by electromagnet because of no current in the work winding exists, and at this moment spool resets under spring 2 effects, and valve opening 9 promptly is closed, and fuel gas flow promptly stops.
The shortcoming of the solenoid valve of existing burner blowout protection device is: valve rod 7 leaves the movement clearance of 0.04-0.07mm at least on shell 4; this gap becomes the passage that is bled in solenoid valve inside in combustion gas; dotted arrow among Fig. 1 has been represented the direction that combustion gas is invaded, and causes electromagnet 3 and armature 6 to produce pollution on junction plane.Especially work as combustion gas contained humidity, impurity more for a long time, dirt, rust staining will appear in their junction plane, and the magnetic effect weakens widely, even disappear.In this case, spool drops on the valve opening under push rod resets afterwards because of the effect that can not get electromagnetic force, and burning promptly stops.According to user and manufactory's reflection, when combustion gas was piped gas, the blowout protection device had only used 3-6 month its solenoid valve suction obviously to descend, even disappears.Therefore its working life is very short, work is not too reliable.
The purpose of this utility model provides and a kind ofly can prevent that combustion gas from invading with the reliability that improves work and the all-sealed solenoid valve of the burner blowout protection device in working life.
The all-sealed solenoid valve of burner blowout protection device includes the armature of electromagnet, work winding, band valve rod, the spool and the shell of band Returnning spring, and is connected in the static seal mode on valve rod and the shell to realize the hermetic big envelope of movement clearance between valve rod and the shell in that its two ends have been installed between shell and the spool.This big envelope can adopt a kind of can bearing because of stem movement makes it to produce the flexible material of diastrophic band, as manufacturings such as rubber, soft plastics.
To and contrast accompanying drawing by embodiment below is further described below the all-sealed solenoid valve of the utility model burner blowout protection device.Have in the accompanying drawing:
Fig. 1 is the solenoid valve positive view of existing burner blowout protection device;
Fig. 2 is the all-sealed solenoid valve positive view of the utility model burner blowout protection device.
From Fig. 2, can see that the all-sealed solenoid valve of burner blowout protection device includes the armature 6 of electromagnet 3, work winding 5, band valve rod 7, the spool 8 and the shell 4 of band Returnning spring 2; in that being installed between shell and the spool, its two ends are connected on valve rod and the shell simultaneously, to realize the hermetic big envelope 11 of movement clearance between valve rod and the shell in the static seal mode.Big envelope 11 is conical sleeve pipes, is made by rubber, and its two ends are fastened on valve rod 7 and the shell 4 in the mode of interference fit respectively.
Big envelope also can adopt the soft plastic manufacturing, at this moment be to increase the tightness that the big envelope two ends connect, except interference fit connects, also available band shape or filiform, as the copper wire lock ring or tighten big envelope outer surface (being represented among the figure), to strengthen tightness in the suit place.
Solenoid valve of the present utility model is installed in by the screw on the shell 4 on the cavity 1 of burner air valve, and its spool 8 cooperates with valve opening 9 on the cavity, with the control combustion gas from cavity right side suction tude to the path between the steam outlet pipe of left side.
The push rod 10 that promotes cavity bottom during igniting is earlier opened spool 8 risings, valve opening 9.At this moment the turnover tracheae of cavity is communicated with, and source of the gas is to the burning head air feed.After burning head was lighted, electromagnet 3 can adhesive armature 6.This adhesive can be kept the invariant position of spool, so push rod can move down and resets and do not influence the aperture of spool.Though combustion gas at this moment has been full of chamber 1, because big envelope 11 seals the gap between valve rod and the shell, combustion gas can not enter solenoid valve, and it is all-sealed that this solenoid valve is become, and its electromagnet is avoided combustion gas with the junction plane of armature and corroded.
The advantage that the all-sealed magnetic valve of burner break off preventor has is: 1) it has realized the hermetically sealed of magnetic valve, makes electromagnet exempt from pollution with the faying face of armature, thereby has guaranteed to inhale the effect of magnetic, makes break off preventor reliable operation, life; 2) it realizes the hermetically sealed of magnetic valve with big envelope simple in structure and easily installation, and is therefore with low cost.
Claims (3)
1, a kind of all-sealed solenoid valve that includes the burner blowout protection device of electromagnet 3, work winding 5, the armature 6 of band valve rod 7, the spool 8 of being with Returnning spring 2 and shell 4; it is characterized in that: be connected on valve rod and the shell in the static seal mode in that its two ends have been installed between shell and the spool; realized the hermetic big envelope 11 of movement clearance between valve rod and the shell, big envelope can adopt a kind of can bearing because of stem movement makes it to produce the flexible made of diastrophic band.
2, the all-sealed solenoid valve of burner blowout protection device as claimed in claim 1 is characterized in that: its two ends that said big envelope 11 is rubber manufacturings can interference fit be enclosed within the conical sleeve on shell and the valve rod.
3, the all-sealed solenoid valve of burner blowout protection device as claimed in claim 1; it is characterized in that: its two ends that said big envelope 11 is soft plastic manufacturings can interference fit be enclosed within the conical sleeve on shell and the valve rod, also can have in order to fastening ribbon on the outer surface of suit place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243552 CN2182307Y (en) | 1993-11-01 | 1993-11-01 | Full sealing electromagnetic valve of flameout protector for combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243552 CN2182307Y (en) | 1993-11-01 | 1993-11-01 | Full sealing electromagnetic valve of flameout protector for combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182307Y true CN2182307Y (en) | 1994-11-09 |
Family
ID=33816975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93243552 Expired - Fee Related CN2182307Y (en) | 1993-11-01 | 1993-11-01 | Full sealing electromagnetic valve of flameout protector for combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182307Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105190176A (en) * | 2013-03-13 | 2015-12-23 | Bsh家用电器有限公司 | Gas valve unit |
-
1993
- 1993-11-01 CN CN 93243552 patent/CN2182307Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105190176A (en) * | 2013-03-13 | 2015-12-23 | Bsh家用电器有限公司 | Gas valve unit |
| US9822976B2 (en) | 2013-03-13 | 2017-11-21 | BSH Hausgeräte GmbH | Gas valve unit |
| CN105190176B (en) * | 2013-03-13 | 2018-04-24 | Bsh家用电器有限公司 | Gas valve unit |
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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 |