CN2799996Y - Total isolation type flameout protecting solenoid valve for gas range - Google Patents
Total isolation type flameout protecting solenoid valve for gas range Download PDFInfo
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- CN2799996Y CN2799996Y CN 200520103050 CN200520103050U CN2799996Y CN 2799996 Y CN2799996 Y CN 2799996Y CN 200520103050 CN200520103050 CN 200520103050 CN 200520103050 U CN200520103050 U CN 200520103050U CN 2799996 Y CN2799996 Y CN 2799996Y
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Abstract
A total isolation type flameout protecting solenoid valve for gas range is a solenoid valve that is used for flameout protecting so as to automatically block a canal of gas to prevent the gas from escaping when a gas range is in flameout by accident. The total isolation type flameout protecting solenoid valve for gas range comprises a magnetic core that is fixed in a shell, operation windings, an armature and a valve shaft that is fixedly connected to the armature. The valve shaft extends outward from a guiding cover of the shell and a valve core with a spring that can control the switch of the gas valve is installed on an extending end of the valve shaft. And a gland whose both ends are connected by static seal is installed between the valve shaft and the guiding cover. The total isolation type flameout protecting solenoid valve for gas range is characterized in that the gland is arranged on the inner side of the guiding cover; a sealing ring is arranged between the guiding cover and the shell; the shell is provided with an outwards convex ring and a sealing ring which can chimerically connect to a valve body of the gas valve. Therefore, the total isolation type flameout protecting solenoid valve for gas range solves the problem that an attracting face of the magnetic core and the armature can not be opened because of losing original flatness and roughness caused by the invasion of gas in the existing flameout protecting solenoid valve for gas range of conventional type, dust-protected type and semi-seal type, and the problem that the armature tends to be damaged because of mechanical shock when the solenoid valve is vacantly released.
Description
Technical field
The utility model relates to a kind of solenoid valve that is used for gas combustion range flameout protection, to guarantee when accident is flame-out automatically the blocking-up fuel gas path, to prevent that combustion gas from escaping; Particularly a kind of adhesive face that can make its magnetic core and armature is in the complete isolated gas combustion range flameout protection solenoid valve in the space that isolates with combustion gas.
Background technique
As everyone knows, when the gas cooker accident extinguishing and people have little time to close gas valve, even also unknown when flame-out, be easy to cause the accident of gas leakage; People carry out the blowout protection of gas cooker by a solenoid valve that is connected with thermocouple for this reason.
The solenoid valve of the gas combustion range flameout protection of existing conventional type; its structure can be seen from Fig. 3; it contains shell 4; in the enclosure the magnetic core 1 of An Zhuaning, work pitch of the laps 2, armature 3, with the affixed valve shaft 5 of armature, and the spool 7 that valve shaft is overhanging from the guide cover 4a of shell, overhanging end is equipped with the band spring 6 that can control gas valve 8 switches.It is installed in gas valve, and situation about using on gas cooker can be referring to Fig. 4 (position of each component be the states when being in burner and lighting among the figure); When igniting, push away the push rod 9 of gas valve 8 in the elder generation, make valve shaft 5 together with moving on to the position shown in Fig. 4 on spool 7, the armature 3, at this moment valve opening 8a is opened, and can flow to the burner 12 of gas cooker after combustion gas flows into from the import 8b of the valve body 8 of gas valve by valve opening 8a, outlet 8c; Meanwhile, piezoelectricity or pulse igniter (not giving expression among Fig. 4) are lighted combustion gas; In the process of fuel gas buring, the hot junction of the thermocouple 13 of close burner 12 is by flame heating, generation thermoelectrical potential, and by circuit be added on the actuating coil 2, magnetic core 1 is magnetized and produce suction adhesive armature 3, make spool 7 upwards throw off valve opening 8a by valve shaft 5 again, gas valve breakdown, burner 13 normal combustion thereupon.As accident extinguishing appears; then the rapid decline of the thermoelectrical potential of thermocouple 13 outputs reduces until the suction of disappearance, magnetic core 1 thereupon; when this suction during less than the elastic force of spring 6; armature 3 promptly be released and under the effect of spring 6 to bottom offset, until close valve orifice 8a; fuel gas path is cut off thereupon, thereby has prevented that the caused combustion gas of gas cooker accident extinguishing from escaping, realizing the blowout protection of gas cooker.The solenoid valve of the gas combustion range flameout protection of existing this conventional type also has following shortcoming: the matching gap that 1) leaves 0.2～0.3mm between the slide opening of this solenoid valve because of its valve shaft 5 and guide cover 4a; and between shell 4 and magnetic core seat 1a, bigger assemblage gap is arranged also; so combustion gas can be invaded solenoid valve inside (gas flow of invading solenoid valve from this two gap with the dotted line signal among Fig. 4 to) from this two gap location; magnetic core 1 just is among the encirclement of combustion gas with armature 3 always; their adhesive face A is subjected to the dust that may have in the combustion gas constantly; the pollution of steam and corrosive gas etc., causing originally is that (straightness requires to reach 0.4 μ for high straightness and roughness; the roughness requirement
) adhesive face because of assembled dust, scale or incrustation scale have occurred, the gas pickling of being corroded property becomes not straight, more coarse; This thermoelectrical potential that can produce for thermocouple (about 20～30mv) deficiency so that magnetic core 1 produces enough suction adhesive armatures 3, so armature 3 can not remain on the attracted position, valve opening 8a is difficult to open, thereby cause the obstructed abnormality of combustion gas gas circuit, when serious then gas cooker can't use; 2) solenoid valve is when sky is put, and armature 3 damages easily because of mechanical impact.Solenoid valve in " double winding gas combustion range flameout protector " that Chinese patent 92200875 provides promptly belongs to the solenoid valve of the gas combustion range flameout protection of this conventional type.People at first are will overcome combustion gas to invade in the solenoid valve, that is will prevent that the adhesive face A of magnetic core and armature is contaminated the improvement of above-mentioned solenoid valve for this reason; Its improved structure can be seen from Fig. 5, flexible big envelope 10, a joint between shell 4 and magnetic core seat 1a of band is installed between the valve shaft 5 of solenoid valve and the guide cover 4a seal ring 11 is housed.Though this solenoid valve has solved the sealing problem between shell 4 and the magnetic core seat 1a, between valve shaft 5 and guide cover 4a, still make combustion gas invade solenoid valve (invading the route of solenoid valve among Fig. 6 with dotted line signal combustion gas) because of there being assemblage gap.Therefore it can only stop the dust in the combustion gas at the most, and can not stop steam in the combustion gas, corrosive gas etc., thus common name it be the solenoid valve that the gas combustion range flameout of dust-protection type is protected.
People improve the solenoid valve that the gas combustion range flameout of above-mentioned dust-protection type is protected again subsequently, become the solenoid valve of the gas combustion range flameout protection of semi-hermetic type, its structure can be seen from Fig. 7, it is connected the two ends of big envelope 10 on the valve shaft 5, guide cover 4a of solenoid valve, so make the movement clearance of valve shaft 5 in guide cover 4a endoporus sealed in the static seal mode respectively; But it has ignored the sealing between shell 4 and the magnetic core seat 1a again, can see from Fig. 8, and combustion gas can be invaded in the solenoid valve along the route of dotted line signal.Therefore it is a kind of solenoid valve of gas combustion range flameout protection of semi-hermetic type,
In a word; the solenoid valve of above-mentioned existing various gas combustion range flameout protections; they also really can not stop combustion gas to invade its inside, thus the adhesive face of magnetic core and armature still be subjected to gas pollution and become coarse, not straight, consequently can't adhesive, valve opening is difficult for opening, the combustion gas gas circuit can not be opened.
Summary of the invention
The utility model is to overcome existing shortcoming in the above-mentioned prior art; provide a kind of can make its magnetic core and armature do not contact combustion gas guaranteeing the complete isolated gas combustion range flameout protection solenoid valve of their reliable adhesives, and make it have characteristics such as simple and reasonable, long service life.
The complete isolated gas combustion range flameout protection solenoid valve of the utility model; it contains shell; the magnetic core of An Zhuaning in the enclosure; the work pitch of the laps; armature; the valve shaft affixed with armature; wherein valve shaft is overhanging from the guide cover of shell; the spool of the band spring that can control the gas valve switch is housed on the overhanging end; and between valve shaft and guide cover, the big envelope that its two ends are connected with static seal is housed; it is characterized in that: big envelope is positioned at the inboard of guide cover; between guide cover and the shell seal ring is housed, and have on the shell can with the valve body of gas valve with chimeric evagination circle and the seal ring that is connected.
The full isolation solenoid valve of the utility model kitchen range blowout protection is provided with its cross section of circle and is conical draw-in groove between the outer wall of its evagination circle and shell; The elastic sleeve of the band ripple that its big envelope is preferably made with common rubber.
The beneficial effects of the utility model: 1) between inboard, guide cover and the shell of guide cover, seal ring is housed because of big envelope, and have on the shell can with the valve body of gas valve with chimeric evagination circle and the seal ring that is connected, therefore can effectively block combustion gas enters solenoid valve inside, magnetic core and armature and exempts from the pollution that combustion gas may bring, so magnetic core and armature can continue to keep its original design straightness and roughness, to guarantee their adhesives reliably on adhesive face, make gas valve can continue proper functioning; 2) can effectively prevent solenoid valve when sky is put, armature damages because of mechanical impact, so can prolong its working life.
To and contrast accompanying drawing by embodiment below, full isolation solenoid valve of the present utility model will be further described below.
Description of drawings
Fig. 1 and Fig. 2 are respectively the main sectional views of the complete isolated gas combustion range flameout protection of the utility model solenoid valve, and the structural drawing of this solenoid valve when using on cooking stove;
Fig. 3～Fig. 8 is respectively the main sectional view of the solenoid valve of existing gas combustion range flameout protection, and their structural drawing when using on cooking stove; Wherein Fig. 3 and Fig. 4 be the solenoid valve of the solenoid valve of gas combustion range flameout protection of conventional type and the gas combustion range flameout protection that structural drawing, Fig. 5 and Fig. 6 when using on cooking stove are dust-protection type thereof and structural drawing, Fig. 7 and Fig. 8 when on cooking stove, using as the solenoid valve of the gas combustion range flameout protection of semi-hermetic type and on cooking stove the structural drawing during use.
Label declaration among the figure: 1-magnetic core; The 1a-magnetic core seat; The 2-pitch of the laps of working; 3-armature; The 4-shell; The 4a-guide cover; 4b-evagination circle; The 4c-draw-in groove; The 5-valve shaft; The 6-spring; The 7-spool; The valve body of 8-gas valve; The 8a-valve opening; The 8b-import; The 8c-outlet; The 9-push rod; The 10-big envelope; The 11-seal ring; The 12-burner; The 13-thermocouple; The adhesive face of A-magnetic core and armature.
Embodiment
Embodiment 1; the structure of the complete isolated gas combustion range flameout protection solenoid valve of present embodiment can be seen from Fig. 1; it contains the shell 4 of solenoid valve; the magnetic core 1 of An Zhuaning in the enclosure; work pitch of the laps 2; armature 3; the valve shaft 5 affixed with armature; wherein valve shaft is overhanging from the guide cover 4a of shell; the spool 7 of the band spring 6 that can control gas valve 8 switches is housed on the overhanging end; the big envelope 10 that its two ends of being equipped with between valve shaft 5 and guide cover 4a are connected with static seal is positioned at the inboard of guide cover 4a, and between guide cover and the shell 4 seal ring 11 is housed; have on the shell 4 can with the valve body 8 of gas valve with chimeric evagination circle 4b that is connected and seal ring 11.
Structure after the complete isolated gas combustion range flameout protection solenoid valve of present embodiment is installed in gas valve can be seen from Fig. 2; although gas valve is connected combustion gas all the time by the import 8b of combustion gas; yet be positioned at the inboard of guide cover 4a because of big envelope 10; between guide cover and the shell 4 seal ring 11 is housed; and have on the shell 4 can with the valve body 8 of gas valve with chimeric evagination circle 4b that is connected and seal ring 11; therefore the solenoid valve of present embodiment gas combustion range flameout protection is full solenoid valve of isolating; it can be blocked combustion gas and enter solenoid valve inside; make magnetic core and armature exempt from the pollution that combustion gas may bring; so magnetic core and armature can continue to keep the straightness and the roughness of its original design, can guarantee their adhesives reliably on adhesive face A; gas valve 8 is proper functioning constantly.
The situation that the complete isolated gas combustion range flameout protection of present embodiment solenoid valve uses on gas cooker also can be seen (position of each component is the states when being in burner and lighting among the figure) from Fig. 2; During igniting, push away the push rod 9 of gas valve 8 in the elder generation, make valve shaft 5 together with moving on to the position shown in the figure on spool 7, the armature 3, at this moment valve opening 8a is opened, and can flow to the burner 12 of gas cooker after combustion gas flows into from the import 8b of gas valve valve body 8 by valve opening 8a, outlet 8c; Meanwhile, piezoelectricity or pulse igniter (not giving expression among Fig. 2) are lighted combustion gas; In the process of fuel gas buring, the hot junction of the thermocouple 13 of close burner 12 is by flame heating, generation thermoelectrical potential, and by circuit be added on the actuating coil 2, magnetic core 1 is magnetized and produce suction adhesive armature 3, make spool 7 upwards throw off valve opening 8a by valve shaft 5 again, gas valve 8 breakdowns, burner 12 normal combustion thereupon.As accident extinguishing appears, then the rapid decline of the thermoelectrical potential of thermocouple 13 outputs reduces until the suction of disappearance, magnetic core 1 thereupon; When this suction during less than the elastic force of spring 6; armature 3 promptly be released and under the effect of spring 6 to bottom offset, until close valve orifice 8a, fuel gas path cuts off thereupon; thereby prevented that the combustion gas that the gas cooker accident extinguishing is brought from escaping, and realized the blowout protection of gas cooker.
The complete isolated gas combustion range flameout protection solenoid valve of present embodiment can also effectively prevent solenoid valve when sky is put, and armature 3 is because of mechanical impact damages, so prolonged the working life of solenoid valve.
Different is for the complete isolated gas combustion range flameout protection solenoid valve of embodiment 2, present embodiment and embodiment 1: be provided with one between the outer wall of its evagination circle 4b and shell 4 and enclose its cross section and be conical draw-in groove 4c; With the installation that makes things convenient for seal ring 11 and can increase solenoid valve and the phenomenon that gets loose in use occurs, thereby make sealing more reliable.In addition, its big envelope 10 is elastic sleeve of band ripple, can adopt common rubber manufacturing usually.
Claims (3)
1; a kind of complete isolated gas combustion range flameout protection solenoid valve; it contains shell (4); the magnetic core of An Zhuaning (1) in the enclosure; work pitch of the laps (2); armature (3); the valve shaft affixed (5) with armature; wherein valve shaft is overhanging from the guide cover (4a) of shell; the spool (7) of the band spring (6) that can control gas valve (8) switch is housed on the overhanging end; and between valve shaft (5) and guide cover (4a), the big envelope (10) that its two ends are connected with static seal is housed; it is characterized in that: big envelope (10) is positioned at the inboard of guide cover (4a); seal ring (11) is housed between guide cover and the shell (4), and have on the shell (4) can with the valve body (8) of gas valve with chimeric evagination circle (4b) that is connected and seal ring (11).
2, complete isolated gas combustion range flameout protection solenoid valve according to claim 1 is characterized in that: be provided with its cross section of circle between the outer wall of described evagination circle (4b) and shell (4) and be conical draw-in groove (4c).
3, according to claim 1 or 2 complete isolated gas combustion range flameout protection solenoid valves, it is characterized in that: said big envelope (10) is the elastic sleeve of band ripple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103050 CN2799996Y (en) | 2005-06-16 | 2005-06-16 | Total isolation type flameout protecting solenoid valve for gas range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103050 CN2799996Y (en) | 2005-06-16 | 2005-06-16 | Total isolation type flameout protecting solenoid valve for gas range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2799996Y true CN2799996Y (en) | 2006-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520103050 Expired - Fee Related CN2799996Y (en) | 2005-06-16 | 2005-06-16 | Total isolation type flameout protecting solenoid valve for gas range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2799996Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061192A (en) * | 2017-12-29 | 2018-05-22 | 浙江博顿燃具科技有限公司 | For the automatic top suction type solenoid valve of cock valve assembly |
-
2005
- 2005-06-16 CN CN 200520103050 patent/CN2799996Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061192A (en) * | 2017-12-29 | 2018-05-22 | 浙江博顿燃具科技有限公司 | For the automatic top suction type solenoid valve of cock valve assembly |
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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: 20060726 Termination date: 20120616 |