CN111173962A - Natural gas and liquefied gas change-over valve and gas room heater - Google Patents
Natural gas and liquefied gas change-over valve and gas room heater Download PDFInfo
- Publication number
- CN111173962A CN111173962A CN202010062933.9A CN202010062933A CN111173962A CN 111173962 A CN111173962 A CN 111173962A CN 202010062933 A CN202010062933 A CN 202010062933A CN 111173962 A CN111173962 A CN 111173962A
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- Prior art keywords
- valve
- gas
- air inlet
- natural gas
- liquefied gas
- Prior art date
- 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.)
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Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 239000007789 gas Substances 0.000 title claims abstract description 126
- 239000003345 natural gas Substances 0.000 title claims abstract description 77
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/083—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with tapered plug
- F16K11/0836—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with tapered plug having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A natural gas and liquefied gas conversion valve comprises a natural gas nozzle, a liquefied gas nozzle, a reversing valve body, a valve cover, a valve rod, a valve core, an end cover and an air inlet piece; the natural gas nozzle is arranged at the gas outlet end of the gas outlet channel, the liquefied gas nozzle is arranged on the liquefied gas nozzle mounting hole, the gas inlet cylinder is in rotating fit with the valve core cavity, the valve rod is connected with the connecting seat, and the valve rod is in rotating fit with the valve rod hole; the end cover is buckled with the air inlet seat, and the air inlet piece is connected and communicated with the end cover; the valve core is in a certain phase, the valve core seals the gas inlet end of the natural gas guide passage and is in a liquefied gas state; the valve core is in another phase, and the air outlet of the valve core is communicated with the natural gas guide channel and is in a natural gas state. Due to the adoption of the structure, the valve can be realized only by rotating the valve rod. A gas warmer has the characteristic of convenient conversion between natural gas and liquefied gas.
Description
Technical Field
The invention relates to a gas warmer.
Background
In the prior art, a gas warmer comprises a bottom shell, a burner, a gas regulating valve, a liquefied gas ignition tube, a natural gas ignition tube, an ignition needle, a natural gas nozzle and a liquefied gas nozzle. There are problems: when the gas is converted from liquefied gas, the nozzle needs to be disassembled and replaced, and the use is inconvenient.
Disclosure of Invention
The purpose of the invention is: the natural gas and liquefied gas conversion valve is provided with a natural gas nozzle and a liquefied gas nozzle, and only a valve rod needs to be rotated during conversion, so that the operation is convenient.
Another object of the present invention is to provide a gas warmer, which has the characteristic of convenient conversion between natural gas and liquefied gas.
The invention is realized by the following steps: a natural gas and liquefied gas change-over valve, including natural gas nozzle and liquefied gas nozzle, its characterized in that: the reversing valve further comprises a reversing valve body, a valve cover, a valve rod, a valve core, an end cover and an air inlet part;
the reversing valve body comprises a valve core cavity, a counter bore arranged on the valve core cavity, an air inlet cavity communicated with one end of the valve core cavity, an air inlet seat and an air guide seat, wherein the air inlet cavity is provided with a liquefied gas nozzle mounting hole;
the valve cover is provided with a valve rod hole,
the valve core comprises an air inlet cylinder with an opening at one end and a connecting seat, and an air outlet hole is formed in the air inlet cylinder;
the natural gas nozzle is arranged at the gas outlet end of the gas outlet channel, the liquefied gas nozzle is arranged on the liquefied gas nozzle mounting hole, the gas inlet cylinder is in rotating fit with the valve core cavity, the valve rod is connected with the connecting seat, and the valve rod is in rotating fit with the valve rod hole; the end cover is buckled with the air inlet seat, and the air inlet piece is connected and communicated with the end cover; the valve core is in a certain phase, the valve core seals the gas inlet end of the natural gas guide passage and is in a liquefied gas state; the valve core is in another phase, and the air outlet of the valve core is communicated with the natural gas guide channel and is in a natural gas state.
The natural gas and liquefied gas conversion valve is characterized in that: the natural gas air guide passage is right-angled.
The natural gas and liquefied gas conversion valve is characterized in that: a counter bore is formed in one side of the end cover, a connecting pipe is arranged on the other side of the end cover, and the air inlet piece comprises an inserting pipe and an air inlet connector;
the end cover is buckled with the air inlet seat and fixedly connected together, the insertion pipe penetrates through the end part of the connecting pipe and is positioned in the counter bore, and the end part of the insertion pipe is provided with a clamp spring.
The natural gas and liquefied gas conversion valve is characterized in that: one side of the valve cover is provided with a guide sleeve surrounding the valve rod hole, the guide sleeve is provided with a guide stop groove, and two ends of the guide stop groove are provided with positioning grooves;
the end part of the valve rod is provided with a circular disc and a square connecting plate;
the connecting seat is provided with a connecting groove;
the guide stop piece comprises a circular plate and a radial stop plate, and the circular plate is provided with a square connecting hole;
the guide stop member is arranged in the guide sleeve, the radial stop plate is in sliding fit with the guide stop groove, and the radial stop plate is matched with the positioning groove; one end of the pressure spring is sleeved on the connecting seat, and the other end of the pressure spring is sleeved on the valve rod and matched with the circular plate; the guide stop plate rotates along with the valve rod.
The natural gas and liquefied gas conversion valve is characterized in that: fixing plates are arranged on two sides of the valve cover;
the valve rod rotating device is characterized by further comprising a supporting seat, wherein a top plate of the supporting seat is provided with a fixing hole, two sides of the supporting seat are provided with supporting plates, and a bottom plate of the supporting seat is provided with a valve rod rotating hole;
the valve rod is in rotating and sliding fit with the valve rod rotating hole, and the air inlet piece is fixedly connected with the fixing hole; the fixed plates at the two ends of the valve cover are fixedly connected with the supporting plate.
The natural gas and liquefied gas conversion valve is characterized in that: the end cover and the air inlet piece are integrally formed.
The natural gas and liquefied gas conversion valve is characterized in that: an air inlet cylinder of the valve core extends towards the opening end, and a liquefied gas air guide hole is formed in the air inlet cylinder; the air inlet cylinder extends into the air inlet cavity to seal the liquefied gas nozzle mounting hole.
A gas warmer comprises a bottom shell, a burner, a gas regulating valve, a liquefied gas ignition tube, a natural gas ignition tube and an ignition needle, and is characterized in that: the natural gas and liquefied gas conversion valve comprises a reversing valve body, a valve cover, a valve rod, a valve core, an end cover, an air inlet part, a natural gas nozzle and a liquefied gas nozzle, wherein the gas regulating valve is connected with the air inlet part, and the gas regulating valve is connected with the natural gas and liquefied gas conversion valve.
The natural gas and liquefied gas conversion valve can be realized by rotating the valve rod due to the adoption of the structure. A gas warmer has the characteristic of convenient conversion between natural gas and liquefied gas.
Drawings
Fig. 1 is one of perspective views of the present invention.
Fig. 2 is a second perspective view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
Fig. 4 is a view a-a of fig. 3.
Fig. 5 is one of the exploded perspective views of the present invention.
Fig. 6 is a second exploded perspective view of the present invention.
Fig. 7 is a third exploded perspective view of the present invention.
Fig. 8 is a cross-sectional view of a second embodiment of the present invention.
Fig. 9 is a front view of a second embodiment of the present invention.
Fig. 10 is a rear view of a second embodiment of the present invention.
Fig. 11 is one of perspective views of a second embodiment of the present invention.
Fig. 12 is a second perspective view of the second embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 2 and 3, the natural gas and liquefied gas conversion valve comprises a natural gas nozzle 1 and a liquefied gas nozzle 2, and further comprises a reversing valve body 3, a valve cover 4, a valve rod 5, a valve core 6, an end cover 7 and an air inlet part 8;
the reversing valve body 3 comprises a valve core cavity 31, a counter bore 32 arranged on the valve core cavity, an air inlet cavity 33 communicated with one end of the valve core cavity, an air inlet seat 34 arranged on the air inlet cavity and an air guide seat 35, wherein the air inlet cavity 33 is provided with a liquefied gas nozzle mounting hole 331, and the air guide seat 35 is provided with an air outlet channel 351 which is in a straight line with the liquefied gas nozzle mounting hole 331 and a natural gas air guide channel 352 communicated with the valve core cavity 31 and the air outlet channel 351;
the valve cover 4 is provided with a valve rod hole 41,
the valve core 6 comprises an air inlet cylinder 61 with an opening at one end and a connecting seat 62, and an air outlet hole 611 is arranged on the air inlet cylinder 61;
the natural gas nozzle 1 is mounted at the gas outlet end of the gas outlet channel 351, the liquefied gas nozzle 2 is mounted on the liquefied gas nozzle mounting hole 331, the gas inlet cylinder 61 is in rotating fit with the valve core cavity 31, the valve rod 5 is connected with the connecting seat 62, and the valve rod 5 is in rotating fit with the valve rod hole 41; the end cover 7 is buckled with the air inlet seat 34, and the air inlet piece 8 is connected and communicated with the end cover 7; as shown in fig. 4 and 5, the valve core 6 closes the gas inlet end of the natural gas conducting channel 352, and is in a liquefied gas state; the liquefied gas is sprayed out through the liquefied gas nozzle 2, the gas outlet channel 351 and the natural gas nozzle 1. In the state shown in fig. 4 and 5, as shown in fig. 5, the valve core 6 rotates clockwise by 90 degrees, and the air outlet 611 of the valve core 6 is communicated with the natural gas guide channel 352, which is in a natural gas state; in the natural gas state, the natural gas (I) enters the gas outlet channel 351 through the liquefied gas nozzle 2; and (II) the natural gas enters the gas outlet channel 351 through the gas inlet cylinder 61, the gas outlet hole 611 and the natural gas guide channel 352, and finally the natural gas is sprayed out from the natural gas nozzle 1.
The natural gas air guide channel 351 is right-angled and comprises a radial portion and an axial portion, the radial portion is communicated with the valve core cavity 31, and the axial portion is communicated with the air outlet channel 351.
A counter bore 71 is arranged on one side of the end cover 7, a connecting pipe 72 is arranged on the other side of the end cover, and the air inlet part 8 comprises an inserting pipe 81 and an air inlet interface 82;
the end cover 7 is buckled with the air inlet seat 34 and fixedly connected together, the insertion pipe 81 penetrates through the end part of the connecting pipe 72 and is positioned in the counter bore 71, and the end part of the insertion pipe 81 is provided with a clamp spring 83; the insertion tube 81 and the connection tube 72 are hermetically sealed.
One side of the valve cover 4 is provided with a guide sleeve 42 surrounding the valve rod hole 41, and the guide sleeve 42 is provided with a guide stop groove 43. Positioning grooves 431 are arranged at two ends of the guide stop groove 43;
the end part of the valve rod 5 is provided with a circular disc 51 and a square connecting plate 52;
the connecting seat 62 is provided with a connecting groove 621;
the device also comprises a pressure spring and a guide stop piece 9, wherein the guide stop piece 9 comprises a circular plate 91 and a radial stop plate 92, and the circular plate 91 is provided with a square connecting hole;
the guide stop member is arranged in the guide sleeve 42, the radial stop plate 92 is in sliding fit with the guide stop groove 43, and the radial stop plate 92 is in fit positioning with the positioning groove 431; one end of the pressure spring is sleeved on the connecting seat 62, and the other end of the pressure spring is sleeved on the valve rod 5 and matched with the circular plate 91; under normal conditions, the radial stop plate 92 is positioned in the positioning groove 431; the guide stop plate 9 rotates along with the valve rod 5;
as shown in fig. 3, pressing the valve stem 5, the valve stem 5 moves rightward; the circular plate 91 compresses the pressure spring, the radial stop plate 92 leaves the positioning groove 431, and then the valve rod 5 rotates by 90 degrees; the radial stop plate 92 rotates 90 degrees in the guide stop groove 43; when the pressure of the valve rod 5 is lost, the valve rod 5 is returned by the pressure spring, and the radial stopper plate 92 is fitted into the positioning groove 431 at the other end of the guide stopper groove 43.
As a further improvement of the invention: fixing plates 44 are arranged on two sides of the valve cover 4; a hexagonal part 83 for rotating a tool is arranged between the inserting pipe 81 and the air inlet interface 82
The support structure further comprises a support seat 10, wherein the support seat 10 comprises a longitudinal frame plate, a top plate and a bottom plate, a fixing hole 101 is formed in the top plate of the support seat 10, support plates 102 are arranged on two sides of the top plate, and a valve rod rotating hole 103 is formed in the bottom plate of the support seat 10;
the valve rod 5 is in rotating and sliding fit with the valve rod rotating hole 103, and the air inlet interface 82 of the air inlet piece 8 penetrates through the fixing hole 101 on the top plate and is screwed with the nut 11 to be fixed on the top plate; the fixing plates 44 at both ends of the valve cover 4 are fixedly connected with the support plate 102.
The end cover 8 and the air inlet 9 are integrally formed.
Example 2
As shown in fig. 8, the inlet tube 61 of the valve core 6 extends towards the open end, and the inlet tube 62 is further provided with a liquefied gas vent 612; the inlet cylinder 61 extends into the inlet chamber 33 to close the liquefied gas nozzle mounting hole 331. In the state shown in fig. 8, liquefied gas enters the gas inlet cylinder 61, the liquefied gas air guide hole 612, the liquefied gas nozzle 2, the gas outlet channel 351 and the natural gas nozzle 1 through the water inlet cavity 33 and is sprayed out;
in the state of fig. 8, the valve rod 5 drives the valve core 3 to rotate by 90 degrees, the gas inlet cylinder seals the liquefied gas guide hole 612, and the gas outlet hole 611 of the valve core 6 is communicated with the natural gas guide channel 352; the natural gas enters the gas outlet channel 351 through the gas inlet cylinder 61, the gas outlet hole 611 and the natural gas guide channel 352, and finally the natural gas is sprayed out from the natural gas nozzle 1.
Example 3
As shown in fig. 9, a gas warmer comprises a bottom shell 12, a burner 13, a gas regulating valve 14, a liquefied gas ignition tube 15, a natural gas ignition tube 16, an ignition needle 17, a thermocouple 18 and a pressure reducing valve 19, wherein one end of an ignition pipeline is connected with the gas regulating valve 14, the other end of the ignition pipeline is connected with a three-way pipe fitting 20, the liquefied gas ignition tube 15, the pressure reducing valve 19 and the three-way pipe fitting 20 are sequentially communicated, and the natural gas ignition tube 16 is communicated with the three-way pipe fitting 20;
also comprises a natural gas and liquefied gas conversion valve 21,
as shown in fig. 3, the natural gas and liquefied gas conversion valve 21 includes a reversing valve body 3, a valve cover 4, a valve rod 5, a valve core 6, an end cover 7, an air inlet 8, a natural gas nozzle 1 and a liquefied gas nozzle 2,
the gas regulating valve 14 is connected with the gas inlet part, and the gas regulating valve 14 is connected with a natural gas and liquefied gas conversion valve 21; the fixed foot plate 1021 at the end of the supporting plate 102 of the supporting seat 10 is fixedly connected with the bottom plate of the bottom shell 12;
with such a structure, the conversion can be realized by directly rotating the valve rod 5 through the through hole at the rear part of the bottom shell 12 without disassembling and replacing the nozzle.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that a person skilled in the art could make several modifications and variations without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.
Claims (8)
1. A natural gas and liquefied gas change-over valve, includes natural gas nozzle and liquefied gas nozzle, its characterized in that: the reversing valve further comprises a reversing valve body, a valve cover, a valve rod, a valve core, an end cover and an air inlet part;
the reversing valve body comprises a valve core cavity, a counter bore arranged on the valve core cavity, an air inlet cavity communicated with one end of the valve core cavity, an air inlet seat and an air guide seat, wherein the air inlet cavity is provided with a liquefied gas nozzle mounting hole;
the valve cover is provided with a valve rod hole,
the valve core comprises an air inlet cylinder with an opening at one end and a connecting seat, and an air outlet hole is formed in the air inlet cylinder;
the natural gas nozzle is arranged at the gas outlet end of the gas outlet channel, the liquefied gas nozzle is arranged on the liquefied gas nozzle mounting hole, the gas inlet cylinder is in rotating fit with the valve core cavity, the valve rod is connected with the connecting seat, and the valve rod is in rotating fit with the valve rod hole; the end cover is buckled with the air inlet seat, and the air inlet piece is connected and communicated with the end cover; the valve core is in a certain phase, the valve core seals the gas inlet end of the natural gas guide passage and is in a liquefied gas state; the valve core is in another phase, and the air outlet of the valve core is communicated with the natural gas guide channel and is in a natural gas state.
2. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: the natural gas air guide passage is right-angled.
3. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: a counter bore is formed in one side of the end cover, a connecting pipe is arranged on the other side of the end cover, and the air inlet piece comprises an inserting pipe and an air inlet connector;
the end cover is buckled with the air inlet seat and fixedly connected together, the insertion pipe penetrates through the end part of the connecting pipe and is positioned in the counter bore, and the end part of the insertion pipe is provided with a clamp spring.
4. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: one side of the valve cover is provided with a guide sleeve surrounding the valve rod hole, the guide sleeve is provided with a guide stop groove, and two ends of the guide stop groove are provided with positioning grooves;
the end part of the valve rod is provided with a circular disc and a square connecting plate;
the connecting seat is provided with a connecting groove;
the guide stop piece comprises a circular plate and a radial stop plate, and the circular plate is provided with a square connecting hole;
the guide stop member is arranged in the guide sleeve, the radial stop plate is in sliding fit with the guide stop groove, and the radial stop plate is matched with the positioning groove; one end of the pressure spring is sleeved on the connecting seat, and the other end of the pressure spring is sleeved on the valve rod and matched with the circular plate; the guide stop plate rotates along with the valve rod.
5. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: fixing plates are arranged on two sides of the valve cover;
the valve rod rotating device is characterized by further comprising a supporting seat, wherein a top plate of the supporting seat is provided with a fixing hole, two sides of the supporting seat are provided with supporting plates, and a bottom plate of the supporting seat is provided with a valve rod rotating hole;
the valve rod is in rotating and sliding fit with the valve rod rotating hole, and the air inlet piece is fixedly connected with the fixing hole; the fixed plates at the two ends of the valve cover are fixedly connected with the supporting plate.
6. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: the end cover and the air inlet piece are integrally formed.
7. A natural gas and liquefied gas changeover valve as claimed in claim 1, wherein: an air inlet cylinder of the valve core extends towards the opening end, and a liquefied gas air guide hole is formed in the air inlet cylinder; the air inlet cylinder extends into the air inlet cavity to seal the liquefied gas nozzle mounting hole.
8. The utility model provides a gas room heater, includes drain pan, combustor, gas governing valve, liquefied gas ignition tube, natural gas ignition tube and ignition needle, its characterized in that: the natural gas and liquefied gas conversion valve comprises a reversing valve body, a valve cover, a valve rod, a valve core, an end cover, an air inlet part, a natural gas nozzle and a liquefied gas nozzle,
the gas regulating valve is connected with the gas inlet part and the gas regulating valve is connected with the natural gas and liquefied gas conversion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062933.9A CN111173962B (en) | 2020-01-20 | 2020-01-20 | Natural gas and liquefied gas conversion valve and gas warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062933.9A CN111173962B (en) | 2020-01-20 | 2020-01-20 | Natural gas and liquefied gas conversion valve and gas warmer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111173962A true CN111173962A (en) | 2020-05-19 |
| CN111173962B CN111173962B (en) | 2024-10-29 |
Family
ID=70646821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010062933.9A Active CN111173962B (en) | 2020-01-20 | 2020-01-20 | Natural gas and liquefied gas conversion valve and gas warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173962B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964067A (en) * | 2020-08-20 | 2020-11-20 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090235998A1 (en) * | 2008-03-18 | 2009-09-24 | Chi-Chen Hsiao | Dual-purpose gas stove switch |
| CN202510767U (en) * | 2012-01-20 | 2012-10-31 | 创尔特热能科技(中山)有限公司 | Gas change-over valve applicable to double gases |
| WO2017197547A1 (en) * | 2016-05-17 | 2017-11-23 | 李雪波 | Universal dual-gas valve used for facilitating the switching and adjustment of two fuel gases |
| CN110145610A (en) * | 2019-05-05 | 2019-08-20 | 广东聚德阀门科技有限公司 | Dual-fuel oven valve without replacing nozzle |
| CN211779155U (en) * | 2020-01-20 | 2020-10-27 | 广东聚德阀门科技有限公司 | Natural gas and liquefied gas change-over valve and gas room heater |
-
2020
- 2020-01-20 CN CN202010062933.9A patent/CN111173962B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090235998A1 (en) * | 2008-03-18 | 2009-09-24 | Chi-Chen Hsiao | Dual-purpose gas stove switch |
| CN202510767U (en) * | 2012-01-20 | 2012-10-31 | 创尔特热能科技(中山)有限公司 | Gas change-over valve applicable to double gases |
| WO2017197547A1 (en) * | 2016-05-17 | 2017-11-23 | 李雪波 | Universal dual-gas valve used for facilitating the switching and adjustment of two fuel gases |
| CN110145610A (en) * | 2019-05-05 | 2019-08-20 | 广东聚德阀门科技有限公司 | Dual-fuel oven valve without replacing nozzle |
| CN211779155U (en) * | 2020-01-20 | 2020-10-27 | 广东聚德阀门科技有限公司 | Natural gas and liquefied gas change-over valve and gas room heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964067A (en) * | 2020-08-20 | 2020-11-20 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
| CN111964067B (en) * | 2020-08-20 | 2022-11-29 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111173962B (en) | 2024-10-29 |
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