CN108506534B - Control valve for combustion apparatus - Google Patents
Control valve for combustion apparatus Download PDFInfo
- Publication number
- CN108506534B CN108506534B CN201810579496.0A CN201810579496A CN108506534B CN 108506534 B CN108506534 B CN 108506534B CN 201810579496 A CN201810579496 A CN 201810579496A CN 108506534 B CN108506534 B CN 108506534B
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- China
- Prior art keywords
- pressure
- valve
- main valve
- stabilizing
- cavity
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 78
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 41
- 230000001276 controlling effect Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a control valve of a combustion apparatus, which comprises a main valve body, wherein the main valve body is provided with an air inlet, an electromagnetic valve, a pressure stabilizing component, a proportional valve and an air outlet; the main valve body is also provided with a main valve cavity, the electromagnetic valve comprises a main valve and an auxiliary valve, the main valve comprises a main valve magnetic core, and the auxiliary valve comprises an auxiliary valve magnetic core; the pressure stabilizing assembly comprises a pressure stabilizing positioning supporting device fixed in the main valve cavity, the pressure stabilizing positioning supporting device is provided with a pressure stabilizing valve port, and the pressure stabilizing valve port is provided with a pressure stabilizing sealing assembly; the main valve body is also provided with a small channel connected with the main valve upper cavity and the main valve lower cavity, and a large channel connected with the main valve upper cavity and the main valve middle cavity, and the gas flow of the large channel is larger than that of the small channel. The invention has good pressure stabilizing effect, uniform air outlet, stable pressure, reasonable design of the gas channel, and safer and reduces the residual gas quantity in the shut-down valve body.
Description
[ field of technology ]
The present invention relates to a gas appliance control valve.
[ background Art ]
With the continuous improvement of living standard, every family uses gas products such as gas water heater hanging stove. The existing gas control valve used in gas products such as wall-mounted furnaces of gas water heaters generally has the following defects: 1. poor pressure stabilizing effect, unsmooth gas flow in the valve body, unstable combustion, gas waste and unfavorable temperature control; 2. the pressure stabilizing force of the pressure stabilizing structure cannot be adjusted, so that the pressure stabilizing structure cannot be suitable for gas products such as wall-mounted water heater furnaces with different specifications and is also not suitable for users in different geographic environments; 3. the channels in the control valve are irregular, and the channels are bent, so that a large amount of fuel gas remains in the shut-down valve body, and the detonation phenomenon easily occurs when the valve is started.
[ invention ]
The invention aims to overcome the defects of the prior art, and provides the gas appliance control valve which has the advantages of good pressure stabilizing effect, uniform air outlet, stable pressure, adjustable pressure stabilizing of a pressure stabilizing structure, suitability for gas products such as wall-mounted water heater furnaces with different specifications, suitability for users in different geographic environments, reasonable design of a gas channel, reduction of residual gas quantity in a shut-off valve body and safety.
The purpose of the invention is realized in the following way:
a control valve of a combustion apparatus comprises a main valve body, wherein an air inlet, an electromagnetic valve, a pressure stabilizing component, a proportional valve and an air outlet are arranged on the main valve body; the main valve body is also provided with a main valve cavity, and is characterized in that:
the electromagnetic valve comprises a main valve and an auxiliary valve, the main valve comprises a main valve magnetic core for controlling the on-off of the air inlet and the main valve cavity, and the auxiliary valve comprises an auxiliary valve magnetic core for controlling the on-off of the main valve cavity and the proportional valve;
the pressure stabilizing assembly comprises a pressure stabilizing positioning supporting device fixed in the main valve cavity, the pressure stabilizing positioning supporting device is provided with a pressure stabilizing valve port, and the pressure stabilizing valve port is provided with a pressure stabilizing sealing assembly for switching on and off the pressure stabilizing valve port; a diaphragm is arranged between the pressure stabilizing assembly and the main valve body, the pressure stabilizing sealing assembly and the pressure stabilizing valve port are closed to divide the main valve cavity into a main valve upper cavity and a main valve middle cavity, a main valve lower cavity is formed between the diaphragm and the main valve body, the main valve body is also provided with a small channel for connecting the main valve upper cavity and the main valve lower cavity, the main valve body is also provided with a large channel for connecting the main valve upper cavity and the main valve middle cavity, and the gas flow of the large channel is larger than that of the small channel; the proportional valve comprises a proportional coil assembly, and the proportional coil assembly is connected with a pressure regulating device for controlling the on-off of the proportional valve and the air outlet.
The pressure-stabilizing positioning support device comprises a pressure-stabilizing support fixed in a main valve cavity, a pressure-stabilizing positioning disc is arranged at the front end of the pressure-stabilizing support, a pressure-stabilizing valve port is formed in the middle of the pressure-stabilizing positioning disc, a support limiting sleeve is arranged in the middle of the pressure-stabilizing support, a pressure-stabilizing sealing assembly comprises a pressure-stabilizing mandrel capable of sliding in the support limiting sleeve, a pressure-stabilizing sealing ring capable of sealing the pressure-stabilizing valve port is arranged at the front end of the pressure-stabilizing mandrel, a pressure-stabilizing spring is arranged on the pressure-stabilizing mandrel, a pressure-stabilizing tray is arranged at the rear end of the pressure-stabilizing mandrel, and a diaphragm is arranged among the pressure-stabilizing support, the pressure-stabilizing tray and the main valve body.
The fuel appliance control valve is characterized by further comprising a proportional valve cavity, a proportional valve port is arranged in the proportional valve cavity, the pressure regulating device comprises a pressure regulating bolt which can slide in a proportional valve core shaft sleeve and seal the proportional valve port, the rear end of the pressure regulating bolt is connected with a pressure regulating bolt pin, a diaphragm plate assembly is further arranged in the proportional valve cavity, the pressure regulating bolt pin penetrates through the diaphragm plate assembly and is connected with the output end of the proportional valve, and the pressure regulating bolt seals the proportional valve port to divide the proportional valve cavity into an upper cavity of the proportional valve and a lower cavity of the proportional valve.
The control valve for the combustion apparatus is characterized in that the main valve body is also provided with an air inlet cavity communicated with the air inlet and the main valve cavity, the main valve core can control the on-off of the air inlet cavity and the main valve cavity, and the air inlet cavity is provided with an air inlet pressure measuring hole.
The control valve of the combustion apparatus is characterized in that an air outlet pressure measuring hole is further formed near the air outlet on the main valve body, and a valve needle is adjusted in the air outlet pressure measuring hole.
The gas appliance control valve is characterized in that the small channel is provided with the gas regulating hole communicated with the small channel, and the gas regulating hole is internally provided with the valve needle for regulating the gas flow of the small channel.
The gas flow ratio of the small passage to the large passage is as follows: 1:4.
the gas flow ratio of the small passage to the large passage is as follows: 2:5.
the gas flow ratio of the small passage to the large passage is as follows: 3:7.
a control valve for a multi-functional combustion apparatus as described above is characterized in that the large passage is provided with nozzles having various apertures.
The invention has good pressure stabilizing effect, uniform air outlet and stable pressure, the pressure stabilizing structure can regulate the pressure stabilizing, and the invention can be applicable to gas products such as wall-mounted water heater furnaces with different specifications, and can also be applicable to users in different geographical environments, and the gas channel has reasonable design, reduces the residual gas quantity in the shut-down valve body and is safer.
[ description of the drawings ]
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1;
FIG. 3 is a cross-sectional view of another aspect of the invention;
FIG. 4 is a cross-sectional view of a proportional valve of the present invention;
fig. 5 is a schematic structural view of the gas flow regulating structure of the present invention.
[ detailed description ] of the invention
A control valve of a combustion apparatus comprises a main valve body 1, wherein an air inlet 11, an electromagnetic valve 2, a pressure stabilizing component 3, a proportional valve 4 and an air outlet 12 are arranged on the main valve body 1; the main valve body 1 is also provided with a main valve cavity 5, the electromagnetic valve 2 comprises a main valve 21 and an auxiliary valve 22, the main valve 21 comprises a main valve magnetic core 211 for controlling the on-off of the air inlet 11 and the main valve cavity 5, and the auxiliary valve 22 comprises an auxiliary valve magnetic core 221 for controlling the on-off of the main valve cavity 5 and the proportional valve 4; the pressure stabilizing assembly 3 comprises a pressure stabilizing positioning support device 31 fixed in the main valve cavity 5, the pressure stabilizing positioning support device is provided with a pressure stabilizing valve port 32, and the pressure stabilizing valve port 32 is provided with a pressure stabilizing sealing assembly 33 for switching on and off the pressure stabilizing valve port; a diaphragm 34 is arranged between the pressure stabilizing assembly 3 and the main valve body 1, the pressure stabilizing sealing assembly 33 and the pressure stabilizing valve port 32 are closed to divide the main valve cavity 5 into a main valve upper cavity 51 and a main valve middle cavity 52, a main valve lower cavity 53 is formed between the diaphragm 34 and the main valve body 1, the main valve body 1 is also provided with a small channel 6 connected with the main valve upper cavity 51 and the main valve lower cavity 53, the main valve body 1 is also provided with a large channel 7 connected with the main valve upper cavity 51 and the main valve middle cavity 52, and the gas flow of the large channel 7 is larger than that of the small channel 6; the proportional valve 4 comprises a proportional coil assembly 41, and the proportional coil assembly 41 is connected with a pressure regulating device 42 for controlling the on-off of the proportional valve 4 and the air outlet 12.
The gas flow ratio of the small channels 6 to the large channels 7 can be set to different ratios according to different requirements, for example 1:4 or 2:5 or 3:7.
the pressure stabilizing positioning support device 31 comprises a pressure stabilizing support 311 fixed in the main valve cavity 5, a pressure stabilizing positioning disc 312 is arranged at the front end of the pressure stabilizing support 311, a pressure stabilizing valve port 32 is formed in the middle opening of the pressure stabilizing positioning disc 312, a support limiting sleeve 3111 is arranged in the middle of the pressure stabilizing support 311, a pressure stabilizing seal assembly 33 comprises a pressure stabilizing mandrel 331 capable of sliding in the support limiting sleeve 3111, a pressure stabilizing seal ring 332 capable of sealing the pressure stabilizing valve port 32 is arranged at the front end of the pressure stabilizing mandrel 331, a pressure stabilizing spring 333 is arranged on the pressure stabilizing mandrel 331, a pressure stabilizing tray 334 is arranged at the rear end of the pressure stabilizing mandrel 331, and a diaphragm 34 is arranged among the pressure stabilizing support 311, the pressure stabilizing tray 334 and the main valve body 1.
The proportional valve 4 further comprises a proportional valve cavity 44, a proportional valve port 46 is arranged in the proportional valve cavity 44, the pressure regulating device 42 comprises a pressure regulating bolt 421 capable of sealing the proportional valve port 46, the rear end of the pressure regulating bolt 421 is connected with a pressure regulating bolt pin 422, the proportional valve cavity 44 is internally provided with a diaphragm assembly 47, the pressure regulating bolt pin 422 penetrates through the diaphragm assembly 47 to be connected with the output end of the proportional valve 4, and the pressure regulating bolt 421 seals the proportional valve port 46 to divide the proportional valve cavity into a proportional valve upper cavity 441 and a proportional valve lower cavity 442. The proportional valve port 46 is provided with a valve port sleeve 45 for the pressure regulating plug 421 to pass through and limiting the pressure regulating plug 421 to slide.
The main valve body 1 is also provided with an air inlet cavity 13 which is communicated with the air inlet 11 and the main valve cavity 5, the main valve core 211 can control the on-off of the air inlet cavity and the main valve cavity, and the air inlet cavity 13 is provided with an air inlet pressure measuring hole 131.
An air outlet pressure measuring hole 14 is also arranged near the air outlet on the main valve body 1, and a valve needle 133 is adjusted in the air outlet pressure regulating hole 14.
The large channel 7 of the invention can be provided with nozzles with different apertures according to requirements, so that the nozzles are matched with the small channel 6 to form a certain gas flow ratio.
The small channel 6 is provided with a gas flow regulating structure, the gas flow regulating structure comprises a gas regulating hole 61 communicated with the small channel 6, a regulating valve needle 62 for regulating the gas flow of the small channel 6 is arranged in the gas regulating hole 61, the outer end of the gas regulating hole 61 is communicated with the outside, and the regulating valve needle 62 can be regulated from the outside of the valve body, so that the gas flow of the small channel 6 can be regulated. The valve needle 62 is adjusted to have a locking function and ensure that the adjusted position is unchanged.
After the invention is started, the pressure of the main valve middle cavity 52 and the proportional valve upper cavity 441 is reduced along with the increase of the current increasing proportional valve port 46, the pressure of the main valve lower cavity 53 is unchanged, the pressure stabilizing valve port 32 is opened under the action of pressure difference, the main channels for supplying the main valve middle cavity 52 and the proportional valve upper cavity 441 are opened, the control valve starts to work, when the input current of the proportional valve 4 is increased, the outlet pressure is increased, when the input current is decreased, the outlet pressure is decreased, and finally the electric control regulation of the fire power is realized.
When the current of the proportional valve assembly is constant at a certain point, under the condition that the air inlet pressure fluctuates, the air inlet pressure fluctuation gradually increases, the air pressure of the air inlet cavity 13 and the air pressure of the proportional valve upper cavity 441 increase at the moment, the air pressure from the small channel 6 to the main valve lower cavity 53 increases, the pressure stabilizing valve port 32 is pushed open, meanwhile, the pressure of the main valve middle cavity 52 and the air pressure of the proportional valve upper cavity 441 increase, because the proportional valve port 46 is constant, the air pressure entering the main valve middle cavity 52 and the air pressure of the proportional valve upper cavity 441 at the moment is obviously faster than the air flow of the large channel 7 because the air flow of the large channel 7 is larger than the air flow of the small channel 6, the air flow can press the diaphragm 34 to move towards the main valve lower cavity 53 because the air flow is obviously faster than the air flow of the large channel 7, the air pressure stabilizing valve port 32 can be reduced at the moment, the air pressure stabilizing valve port 32 can be stably balanced to a pressure point under the action of the pressure stabilizing spring 333, at least the severe fluctuation can not occur along with the air inlet pressure fluctuation, and the pressure stabilizing effect is achieved.
The same principle is that the inlet pressure is reduced, the proportional valve port 46 is constant, the flow required by the main valve middle cavity 52 and the proportional valve upper cavity 441 is increased, but under the influence of negative pressure, the gas flow of the large channel 7 is larger than that of the small channel 6, most of the inlet end flow enters the main valve middle cavity 52 and the proportional valve upper cavity 441 through the pressure stabilizing valve port 32 and the large channel 7, the flow entering the main valve lower cavity 53 within a period of time can not reduce the pressure of the main valve lower cavity 53 and flow back to the main valve upper cavity 51 due to the limitation of the small channel 6, so that the pressure of the main valve lower cavity 53 can be kept, but the pressure of the main valve lower cavity 53 is larger than that of the main valve middle cavity 52 and the proportional valve upper cavity 441, the diaphragm 34 presses the pressure stabilizing valve port 32 towards the main valve middle cavity 52, so that the pressure is opened more, the inlet flow enters the main valve middle cavity 52 and the proportional valve upper cavity 441 through the pressure stabilizing valve port 32, the loss caused by the reduction of the inlet pressure flow is compensated, the outlet pressure fluctuation is improved within a certain inlet pressure range, and the pressure fluctuation is stabilized.
Claims (8)
1. The control valve of the combustion apparatus comprises a main valve body (1), wherein an air inlet (11), an electromagnetic valve (2), a pressure stabilizing component (3), a proportional valve (4) and an air outlet (12) are arranged on the main valve body (1); the main valve body (1) is also provided with a main valve cavity (5), and is characterized in that:
the electromagnetic valve (2) comprises a main valve (21) and an auxiliary valve (22), the main valve (21) comprises a main valve core (211) for controlling the on-off of the air inlet (11) and the main valve cavity (5), and the auxiliary valve (22) comprises an auxiliary valve core (221) for controlling the on-off of the main valve cavity (5) and the proportional valve (4);
the pressure stabilizing assembly (3) comprises a pressure stabilizing positioning supporting device (31) fixed in the main valve cavity (5), the pressure stabilizing positioning supporting device is provided with a pressure stabilizing valve port (32), and the pressure stabilizing valve port (32) is provided with a pressure stabilizing sealing assembly (33) for switching on and off the pressure stabilizing valve port; a diaphragm (34) is arranged between the pressure stabilizing assembly (3) and the main valve body (1), the pressure stabilizing sealing assembly (33) and the pressure stabilizing valve port (32) are closed to divide the main valve cavity (5) into a main valve upper cavity (51) and a main valve middle cavity (52), a main valve lower cavity (53) is formed between the diaphragm (34) and the main valve body (1), a small channel (6) which is connected with the main valve upper cavity (51) and the main valve lower cavity (53) is further arranged on the main valve body, a large channel (7) which is connected with the main valve upper cavity (51) and the main valve middle cavity (52) is further arranged on the main valve body, and the gas flow of the large channel (7) is larger than that of the small channel (6); the proportional valve (4) comprises a proportional coil assembly (41), and the proportional coil assembly (41) is connected with a pressure regulating device (42) for controlling the on-off of the proportional valve (4) and the air outlet (12);
the pressure-stabilizing positioning support device (31) comprises a pressure-stabilizing support (311) fixed in the main valve cavity (5), a pressure-stabilizing positioning disc (312) is arranged at the front end of the pressure-stabilizing support (311), a pressure-stabilizing valve port (32) is formed in the middle opening of the pressure-stabilizing positioning disc (312), a support limiting sleeve (3111) is arranged in the middle of the pressure-stabilizing support (311), a pressure-stabilizing sealing assembly (33) comprises a pressure-stabilizing mandrel (331) capable of sliding in the support limiting sleeve (3111), a pressure-stabilizing sealing ring (332) capable of sealing the pressure-stabilizing valve port (32) is arranged at the front end of the pressure-stabilizing mandrel (331), a pressure-stabilizing spring (333) is arranged on the pressure-stabilizing mandrel (331), a pressure-stabilizing tray (334) is arranged at the rear end of the pressure-stabilizing mandrel (331), and a diaphragm (34) is arranged between the pressure-stabilizing support (311), the pressure-stabilizing tray (334) and the main valve body (1);
the proportional valve (4) further comprises a proportional valve cavity (44), a proportional valve port (46) is arranged in the proportional valve cavity (44), the pressure regulating device (42) comprises a pressure regulating bolt (421) which can slide in a proportional valve core shaft sleeve (45) and seal the proportional valve port (46), the rear end of the pressure regulating bolt (421) is connected with a pressure regulating bolt pin (422), a diaphragm plate assembly (47) is further arranged in the proportional valve cavity (44), the pressure regulating bolt pin (422) penetrates through the diaphragm plate assembly (47) to be connected with the output end of the proportional valve (4), and the pressure regulating bolt (421) seals the proportional valve port to divide the proportional valve cavity into an upper proportional valve cavity (441) and a lower proportional valve cavity (442).
2. The control valve for a combustion apparatus according to claim 1, characterized in that the main valve body (1) is further provided with an air inlet cavity (13) for communicating the air inlet (11) with the main valve cavity (5), the main valve core (211) can control the on-off of the air inlet cavity and the main valve cavity, and the air inlet cavity (13) is provided with an air inlet pressure measuring hole (131).
3. A control valve for a combustion apparatus according to claim 1, characterized in that the main valve body (1) is further provided with an outlet pressure measuring hole (14) near the outlet, and an adjusting valve needle (133) is provided in the outlet pressure measuring hole (14).
4. A gas appliance control valve according to claim 1, characterized in that the small passage (6) is provided with a gas regulating hole (61) communicated with the small passage (6), and an adjusting valve needle (62) for regulating the gas flow of the small passage (6) is arranged in the gas regulating hole (61).
5. A gas appliance control valve according to claim 1, characterized in that the gas flow ratio of the small channel (6) to the large channel (7) is 1:4.
6. a gas appliance control valve according to claim 1, characterized in that the gas flow ratio of the small channel (6) to the large channel (7) is 2:5.
7. a gas appliance control valve according to claim 1, characterized in that the gas flow ratio of the small channel (6) to the large channel (7) is 3:7.
8. a gas appliance control valve according to claim 1, characterized in that the large channel (7) is provided with nozzles of various apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579496.0A CN108506534B (en) | 2018-06-07 | 2018-06-07 | Control valve for combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579496.0A CN108506534B (en) | 2018-06-07 | 2018-06-07 | Control valve for combustion apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506534A CN108506534A (en) | 2018-09-07 |
| CN108506534B true CN108506534B (en) | 2024-02-06 |
Family
ID=63402722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810579496.0A Active CN108506534B (en) | 2018-06-07 | 2018-06-07 | Control valve for combustion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506534B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030403B (en) * | 2019-04-15 | 2024-06-07 | 广东万和热能科技有限公司 | Gas proportional valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0113876A2 (en) * | 1982-12-17 | 1984-07-25 | Honeywell Inc. | Gas control apparatus |
| KR20010005067A (en) * | 1999-06-30 | 2001-01-15 | 전주범 | A proportional control valve device for gas |
| CN201636417U (en) * | 2009-12-14 | 2010-11-17 | 黄依华 | Electromagnetic gas proportioning valve |
| CN202023961U (en) * | 2011-05-09 | 2011-11-02 | 杭州强邦精密机械电器有限公司 | Proportional valve with improved structure |
| CN203272886U (en) * | 2013-05-17 | 2013-11-06 | 黄依华 | Gas proportional control valve with dual safety latch function |
| CN204201207U (en) * | 2014-09-12 | 2015-03-11 | 广州格优智能控制***有限公司 | Gas combustion multifunction pressure maintaining valve assembly |
| CN208503566U (en) * | 2018-06-07 | 2019-02-15 | 广东长青（集团）股份有限公司 | A kind of multifunction burning utensil control valve |
-
2018
- 2018-06-07 CN CN201810579496.0A patent/CN108506534B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0113876A2 (en) * | 1982-12-17 | 1984-07-25 | Honeywell Inc. | Gas control apparatus |
| KR20010005067A (en) * | 1999-06-30 | 2001-01-15 | 전주범 | A proportional control valve device for gas |
| CN201636417U (en) * | 2009-12-14 | 2010-11-17 | 黄依华 | Electromagnetic gas proportioning valve |
| CN202023961U (en) * | 2011-05-09 | 2011-11-02 | 杭州强邦精密机械电器有限公司 | Proportional valve with improved structure |
| CN203272886U (en) * | 2013-05-17 | 2013-11-06 | 黄依华 | Gas proportional control valve with dual safety latch function |
| CN204201207U (en) * | 2014-09-12 | 2015-03-11 | 广州格优智能控制***有限公司 | Gas combustion multifunction pressure maintaining valve assembly |
| CN208503566U (en) * | 2018-06-07 | 2019-02-15 | 广东长青（集团）股份有限公司 | A kind of multifunction burning utensil control valve |
Non-Patent Citations (1)
| Title |
|---|
| 电子燃气伺服阀及其测试***;华胜军, 陶国良, 李国红;液压气动与密封(第05期);第32-34页 * |
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| CN108506534A (en) | 2018-09-07 |
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Effective date of registration: 20201013 Address after: 528415, No. 42, South Avenue, Xiaolan Town, Guangdong, Zhongshan Applicant after: Changqing thermal energy technology (Zhongshan) Co.,Ltd. Address before: No. 42, No. 42, Xiaolan Town, Guangdong, Guangdong Applicant before: GUANGDONG CHANT Group Inc. |
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