CN202972124U - Current-limiting type fuel gas proportional valve - Google Patents
Current-limiting type fuel gas proportional valve Download PDFInfo
- Publication number
- CN202972124U CN202972124U CN 201220610620 CN201220610620U CN202972124U CN 202972124 U CN202972124 U CN 202972124U CN 201220610620 CN201220610620 CN 201220610620 CN 201220610620 U CN201220610620 U CN 201220610620U CN 202972124 U CN202972124 U CN 202972124U
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- current
- fuel gas
- moving core
- limiting type
- valve body
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- Withdrawn - After Issue
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Abstract
The utility model discloses a current-limiting type fuel gas proportional valve, which comprises a valve body, wherein a gas inlet is formed on the lower end surface of the valve body; a plunger is arranged in the valve body; a plug plate capable of plugging up the gas inlet is arranged at the lower end of the plunger; a movable core is arranged at the upper end of the plunger; a plurality of proportional valve coils are arranged on the outer part of the movable core; an elastic return device is further arranged between the lower end of the movable core and the plunger; and a limiting device is further arranged at the upper end of the movable core. The limiting device is arranged, so that magnetic field force is applied to the plunger by the movable core after the proportional valve coils are electrified, and an opening is formed between the plug plate and the gas inlet in a manner that the plug plate is driven by the plunger to move; when the current applied to the proportional valve coils is extremely large or extremely small, the limiting device can enable the gas inlet and the plug plate to work between the biggest opening and the smallest opening, so that the output quantity of the fuel gas is controlled within a safety range between the biggest output quantity and the smallest output quantity, and the fuel gas equipment is enabled to safely work when the control is invalid. Therefore, the current-limiting type fuel gas proportion valve is suitable for fuel gas equipment such as various fuel gas water heaters, fuel gas wall-hanging stoves and fuel gas boilers.
Description
Technical field
The utility model relates to a kind of current-limiting type gas ratio valve of the control system for gas utensils such as gas water-heater, burnt gas wall hanging furnace and gas fired boilers.
Background technique
The gas utensil product of the automatic control of selling in the market, all to provide electric current to drive gas ratio valve by controller mostly, its minimum and maximum electric current is realized by the software section of controller, like this, when controller after inefficacy, when excessive electric current is applied on the coil of Proportional valve, due to the device that limits its maximum opening not being set on Proportional valve, the gas flow of outlet can become greatly thereupon, has potential safety hazard; When the electric current of the coil on being applied to Proportional valve is zero, due to the original start scope that exceeds controller, will cause the partial combustion of combustion gas, the situations such as flame-out perhaps occur.
Therefore need now a kind of gas ratio valve that can control full admission amount and minimum air inflow, the assurance gas utensil is worked in safety range.
The model utility content
The purpose of this utility model is to provide a kind of current-limiting type gas ratio valve, and it can control full admission amount and minimum air inflow, and gas utensil is worked in safety range.
The solution that the utility model solves its technical problem is: a kind of current-limiting type gas ratio valve, it comprises valve body, the lower end surface of described valve body is provided with suction port, valve inner is equipped with stick harness, the lower end of described stick harness is equipped with the patch that suction port can be blocked, and the upper end of stick harness is equipped with moving core, and the outside of described moving core is equipped with several Proportional valve coils, between the lower end of moving core and stick harness, elastic recovery device is installed also, the upper end of moving core also is equipped with limit stoper.
As further improvement in the technical proposal, described limit stoper comprises the bearing that is arranged on valve body, is arranged on the spacing draw-in groove of the upper end of moving core, the small end adjusting nut on bearing is installed and holds greatly adjusting nut, one end of described large end adjusting nut is provided with boss, and the sidewall that described boss passes small end adjusting nut and spacing draw-in groove successively is placed in the vallecular cavity of spacing draw-in groove.
As further improvement in the technical proposal, between described moving core and small end adjusting nut, proportional spring is installed also.
As further improvement in the technical proposal, an end of described spacing draw-in groove is provided with and boss can be blocked and supplies boss to move up and down the vallecular cavity in space, and the other end is provided with and the threaded end that moves core and be connected.
As further improvement in the technical proposal, described elastic recovery device is arranged on the diaphragm on valve body, and the compressing tablet of pressing diaphragm is installed on described diaphragm, between the lower end of described compressing tablet and moving core, pressure-stabilizing spring is installed.
As further improvement in the technical proposal, described diaphragm is circular membranaceous elastic sensing element.
As further improvement in the technical proposal, between the lower end of described moving core and the upper end of stick harness, locking plate is installed also, be provided with pad below described locking plate, between described pad and compressing tablet, spring is installed.
the beneficial effects of the utility model are: the utility model is by arranging limit stoper, after the Proportional valve coil electricity, moving core is under the effect in the magnetic field that the Proportional valve coil produces, stick harness is applied magnetic force, make stick harness drive the patch motion, form aperture between patch and suction port, electric current on being applied to the Proportional valve coil is excessive or when too small, limit stoper assurance suction port and patch are worked between maximum opening and minimum aperture, the output quantity of combustion gas is controlled in safety range between maximum output and minimum output quantity, guarantee that gas utensil can trouble free service when controlling inefficacy.
The utility model is applicable to the gas utensils such as various gas water-heaters, burnt gas wall hanging furnace and gas fired boiler.
Description of drawings
Below in conjunction with accompanying drawing and example, the utility model is further described.
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is A-A in Fig. 1 sectional view during to minimum aperture;
Fig. 3 is A-A in Fig. 1 sectional view during to maximum opening.
Embodiment
Below in conjunction with accompanying drawing, describe application of the present utility model in detail.
With reference to Fig. 1～Fig. 3, a kind of current-limiting type gas ratio valve, it comprises valve body 1, the lower end surface of valve body 1 is provided with suction port 2, and valve body 1 inside is equipped with stick harness 3, and the lower end of stick harness 3 is equipped with the patch 4 that suction port 2 can be blocked, the upper end of stick harness 3 is equipped with moving core 5, the outside of moving core 5 is equipped with several Proportional valve coils 6, and lower end and 3 of the stick harnesses of moving core 5 also are equipped with elastic recovery device, and the upper end of moving core 5 also is equipped with limit stoper.
By limit stoper is set, after 6 energisings of Proportional valve coil, moving core 5 is under the effect in the magnetic field that Proportional valve coil 6 produces, stick harness 3 is applied magnetic force, make stick harness 3 drive patch 4 motions, 2 of patch 4 and suction ports form aperture, electric current on being applied to Proportional valve coil 6 is excessive or when too small, limit stoper assurance suction port 2 and patch 4 are worked between maximum opening and minimum aperture, the output quantity of combustion gas is controlled in safety range between maximum output and minimum output quantity, guarantees that gas utensil is control can trouble free service when losing efficacy.
Be further used as preferred embodiment, limit stoper comprises the bearing that is arranged on valve body 1, is arranged on the spacing draw-in groove 7 of the upper end of moving core 5, the small end adjusting nut 8 on bearing is installed and holds greatly adjusting nut 9, one end of large end adjusting nut 9 is provided with boss 10, and the sidewall that boss 10 passes small end adjusting nut 8 and spacing draw-in groove 7 successively is placed in the vallecular cavity of spacing draw-in groove 7.after 6 energisings of Proportional valve coil, moving core 5 is under the effect in the magnetic field that Proportional valve coil 6 produces, stick harness 3 is applied magnetic force, make stick harness 3 drive patch 4 motions, 2 of patch 4 and suction ports form aperture, electric current on being applied to Proportional valve coil 6 is excessive or when too small, the moving range of boss 10 in the vallecular cavity of spacing draw-in groove 7 of large end adjusting nut 9 limited the moving range of stick harness 3, like this, when controlling inefficacy, the aperture that suction port 2 and patch are 4 does not exceed maximum opening and minimum aperture, guarantee that gas utensil can trouble free service when controlling inefficacy.The utility model can also be by regulating small end adjusting nut 8 and holding greatly the relative position of 9 of adjusting nuts to regulate maximum opening and the minimum aperture of 2 of patch 4 and suction ports.
Be further used as preferred embodiment, moving core 5 and 8 of small end adjusting nuts also are equipped with proportional spring 11.
Be further used as preferred embodiment, an end of spacing draw-in groove 7 is provided with and boss 10 can be blocked and supplies boss 10 to move up and down the vallecular cavity in space, and the other end is provided with and the threaded end that moves core 5 and be connected.
Move up and down maximum opening and the minimum aperture of controlling 2 of patch 4 and suction ports at the vallecular cavity of spacing draw-in groove 7 by boss 10.
Be further used as preferred embodiment, elastic recovery device is arranged on the diaphragm 12 on valve body 1, and the compressing tablet 13 of pressing diaphragm 12 is installed on diaphragm 12, between the lower end of compressing tablet 13 and moving core 5, pressure-stabilizing spring 14 is installed.When the pressure of the combustion gas that enters from suction port 2 changes, diaphragm 12 drives stick harness 3 under the effect of gaseous-pressure and patch 4 moves together, turn down the aperture of 2 of patch 4 and suction ports, make from the gaseous-pressure that enters of suction port 2 and be consistent, like this, the pressure after making combustion gas go out is kept constant.
Be further used as preferred embodiment, diaphragm 12 is circular membranaceous elastic sensing element.
Be further used as preferred embodiment, between the lower end of moving core 5 and the upper end of stick harness 3, locking plate 15 be installed also, described locking plate 15 belows are provided with pad 16, and 13 of described pad 16 and compressing tablets are equipped with spring 17.Locking plate 15 mainly shields.
More than that better embodiment of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite of the utility model spirit, the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (7)
1. current-limiting type gas ratio valve, it comprises valve body (1), it is characterized in that: the lower end surface of described valve body (1) is provided with suction port (2), valve body (1) inside is equipped with stick harness (3), the lower end of described stick harness (3) is equipped with the patch (4) that suction port (2) can be blocked, the upper end of stick harness (3) is equipped with moving core (5), the outside of described moving core (5) is equipped with several Proportional valve coils (6), between the lower end of moving core (5) and stick harness (3), elastic recovery device is installed also, the upper end of moving core (5) also is equipped with limit stoper.
2. current-limiting type gas ratio valve according to claim 1, it is characterized in that: the spacing draw-in groove (7) of the upper end that described limit stoper comprises the bearing that is arranged on valve body (1), be arranged on moving core (5), the small end adjusting nut (8) on bearing is installed and holds greatly adjusting nut (9), one end of described large end adjusting nut (9) is provided with boss (10), and the sidewall that described boss (10) passes small end adjusting nut (8) and spacing draw-in groove (7) successively is placed in the vallecular cavity of spacing draw-in groove (7).
3. current-limiting type gas ratio valve according to claim 2, is characterized in that: between described moving core (5) and small end adjusting nut (8), proportional spring (11) is installed also.
4. according to claim 2 or 3 described current-limiting type gas ratio valves, it is characterized in that: an end of described spacing draw-in groove (7) is provided with and boss (10) can be blocked and supplied boss (10) to move up and down the vallecular cavity in space, and the other end is provided with and the threaded end that moves core (5) and be connected.
5. current-limiting type gas ratio valve according to claim 1, it is characterized in that: described elastic recovery device is arranged on the diaphragm (12) on valve body (1), the compressing tablet (13) of pressing diaphragm (12) is installed on described diaphragm (12), between the lower end of described compressing tablet (13) and moving core (5), pressure-stabilizing spring (14) is installed.
6. current-limiting type gas ratio valve according to claim 5 is characterized in that: described diaphragm (12) is circular membranaceous elastic sensing element.
7. current-limiting type gas ratio valve according to claim 5, it is characterized in that: between the upper end of the lower end of described moving core (5) and stick harness (3), locking plate (15) is installed also, described locking plate (15) below is provided with pad (16), between described pad (16) and compressing tablet (13), spring (17) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610620 CN202972124U (en) | 2012-11-16 | 2012-11-16 | Current-limiting type fuel gas proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610620 CN202972124U (en) | 2012-11-16 | 2012-11-16 | Current-limiting type fuel gas proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202972124U true CN202972124U (en) | 2013-06-05 |
Family
ID=48513200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220610620 Withdrawn - After Issue CN202972124U (en) | 2012-11-16 | 2012-11-16 | Current-limiting type fuel gas proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202972124U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966742A (en) * | 2012-11-16 | 2013-03-13 | 广州市精鼎电器科技有限公司 | Flow-limiting fuel gas proportional valve |
| CN103994258A (en) * | 2014-02-18 | 2014-08-20 | 杭州强邦精密机械电器有限公司 | Gas valve with proportional electromagnetic valve regulation and combustor air pressure feedback regulation functions |
| CN109140789A (en) * | 2018-09-29 | 2019-01-04 | 万家乐热能科技有限公司 | A kind of gas proportion valve-regulated devices |
-
2012
- 2012-11-16 CN CN 201220610620 patent/CN202972124U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966742A (en) * | 2012-11-16 | 2013-03-13 | 广州市精鼎电器科技有限公司 | Flow-limiting fuel gas proportional valve |
| CN102966742B (en) * | 2012-11-16 | 2014-08-20 | 广州市精鼎电器科技有限公司 | Flow-limiting fuel gas proportional valve |
| CN103994258A (en) * | 2014-02-18 | 2014-08-20 | 杭州强邦精密机械电器有限公司 | Gas valve with proportional electromagnetic valve regulation and combustor air pressure feedback regulation functions |
| CN109140789A (en) * | 2018-09-29 | 2019-01-04 | 万家乐热能科技有限公司 | A kind of gas proportion valve-regulated devices |
| CN109140789B (en) * | 2018-09-29 | 2023-11-24 | 万家乐热能科技有限公司 | Gas proportional valve adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20140820 |
|
| RGAV | Abandon patent right to avoid regrant |