CN218820536U - Gas combustion system and flameless thermoelectric safety device for same - Google Patents
Gas combustion system and flameless thermoelectric safety device for same Download PDFInfo
- Publication number
- CN218820536U CN218820536U CN202222945799.4U CN202222945799U CN218820536U CN 218820536 U CN218820536 U CN 218820536U CN 202222945799 U CN202222945799 U CN 202222945799U CN 218820536 U CN218820536 U CN 218820536U
- Authority
- CN
- China
- Prior art keywords
- conductor
- safety device
- gas combustion
- thermocouple
- flameless
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 97
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 28
- 239000012212 insulator Substances 0.000 claims description 3
- 229910001006 Constantan Inorganic materials 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/005—Circuits arrangements for indicating a predetermined temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/021—Particular circuit arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2229/00—Flame sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/14—Fuel valves electromagnetically operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/04—Gaseous fuels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2207/00—Application of thermometers in household appliances
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Combustion (AREA)
Abstract
The utility model relates to a gas combustion system and be used for flameless thermoelectric safety device of this system, this thermoelectric safety device includes: a thermocouple (1) having a first conductor (2) and a second conductor (3) made of a different material than the first conductor (2), the first conductor (2) being attached to the second conductor (3) in an electrical connection hot junction (5); a solenoid valve (6) electrically connected to the first conductor (2) and the second conductor (3) and configured to allow the passage of gas when energized by the thermocouple (1). The thermocouple (1) comprises a third conductor (4) made of a different material than the first conductor (2), the third conductor (4) being connected to the hot junction (5) so that, when the hot junction (5) heats up, thermoelectric power is obtained between the outlet of the first conductor (2) and the outlet of the third conductor (4) capable of powering the load (12).
Description
Technical Field
The utility model relates to a flameless thermoelectric safety device for a gas combustion system.
Background
Cooking appliances with burners are known in the prior art, wherein each of said burners has a thermocouple associated with it, connected to the respective solenoid valve, so that when the thermocouple detects the presence of a flame in the burner, it generates a thermoelectric current capable of keeping the solenoid valve energized for a certain time, thus allowing the passage of gas to the respective burner.
CN207132385U discloses a cooking appliance with a thermocouple, both ends of which are connected to a solenoid valve and an electromotive force detecting circuit of the thermocouple, which is in turn connected to a control module. Based on the detection circuit of the thermocouple, the control module determines whether the burner is in an on state with a flame, whether the burner is turned on, whether the burner is turned off, or whether the burner has been accidentally turned off.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a flameless thermoelectric safety device for a gas combustion system.
The thermoelectric safety device includes: a thermocouple comprising a first conductor and a second conductor, the second conductor being made of a different material than the first conductor, the first conductor being connected to the second conductor at an electrical connection hot junction; and a solenoid valve electrically connected to the first conductor and the second conductor and configured to allow passage of gas to the burner when the burner is energized by the thermocouple.
The thermocouple further includes a third conductor made of a different material than the first conductor, the third conductor being connected to the hot junction of the electrical connection such that thermoelectric power capable of powering the load is obtained between the outlet of the first conductor and the outlet of the third conductor when the hot junction of the electrical connection heats up.
A thermoelectric safety device is thus obtained which, in addition to performing its safety function by closing the gas passage to the burner when no flame is detected in the burner, also generates a voltage capable of powering the load. The thermoelectric safety device includes a single thermocouple having two outlets that are capable of providing power in the outlet that powers the load without substantially damaging the thermoelectric safety circuit. The need to use two separate thermocouples (one for the thermoelectric safety function and the other for powering the load) is thus avoided, since both functions are performed with a single thermocouple.
The utility model aims at providing a gas combustion system, gas combustion system includes above-mentioned thermoelectric safety device.
These and other advantages and features of the invention will become apparent from the drawings and detailed description of the invention.
Drawings
Fig. 1 shows a wiring diagram of an embodiment of a thermoelectric safety device according to the present invention.
Figure 2 shows a longitudinal cross-section of an embodiment of the thermoelectric safety device of figure 1.
Detailed Description
Fig. 1 shows a wiring diagram of an embodiment of a flameless thermoelectric safety device 10 in a gas combustion system according to the present invention. Preferably, the gas combustion system is a gas appliance incorporating a thermoelectric safety device 10 according to the present invention. In one example, the gas appliance may be a gas range or any other type of gas appliance known in the art, such as a gas range, a furnace, or the like. Furthermore, the gas appliance may comprise one burner or a plurality of burners, each burner comprising a respective thermoelectric safety device 10.
The thermoelectric safety device 10 according to the present invention comprises: a thermocouple 1 adapted to detect a flame in a combustion system, in particular in a burner of the combustion system; and a solenoid valve 6 associated with thermocouple 1. The thermocouple 1 includes a first conductor 2, a second conductor 3, and a third conductor 4, which are electrical conductors, the second conductor 3 and the third conductor 4 being made of a different material than the first conductor 2.
The first conductor 2, the second conductor 3 and the third conductor 4 are connected to each other by an electrically connected hot junction 5, so that when the electrically connected hot junction 5 heats up in the presence of a flame, a thermoelectric power is obtained between the outlet of the first conductor 2 and the outlet of the second conductor 3, which can keep the solenoid valve 6 energized, another thermoelectric power being obtained between the outlet of the first conductor 2 and the outlet of the third conductor 4, which can supply the load 12. The two thermoelectric powers do not necessarily have the same value. The second conductor 3 and the third conductor 4 are phase connection conductors, and the first conductor 2 is a ground conductor.
In one embodiment, the second conductor 3 and the third conductor 4 are made of the same metallic material. Preferably, both the second conductor 3 and the third conductor 4 are made of constantan. Preferably, the second conductor 3 and the third conductor 4 are both conductors in the form of cables.
The thermoelectric safety device 10 further comprises a booster 7, the booster 7 being electrically connected to the first conductor 2 and to the third conductor 4 and configured for boosting the voltage obtained between the first conductor 2 and the third conductor 4, a voltage being obtained at the outlet of the booster 7 which is able to supply the load 12. The load 12 may be a light indicator such as an LED, RFI system, or battery load, or another application requiring the nominal voltage.
When the flame is extinguished, the hot electrical connection point 5 starts cooling, generating on the one hand less and less thermal current circulating through the solenoid valve 6 until reaching the point where the solenoid valve 6 becomes open, closing the gas passage to the burner, and on the other hand less and less thermal current circulating to the booster 7 until reaching the point where the load 12 is no longer powered.
In the embodiment of the thermocouple 1 shown in fig. 2, the first conductor 2 is formed by the metal body 8, and the electrically connecting hot junction 5 is formed by the end 8a of the metal body 8, the end of the second conductor 3, and the end of the third conductor 4. The end 8a of the metal body 8 has a substantially frustoconical region followed by a closed tip. In the embodiment shown in fig. 2, the end 8a of the metal body 8 is part of the electrical connection hot junction 5, in particular, the end of the second conductor 3 is fixed to the tip of the end 8a of the metal body 8, and the end of the third conductor 4 is fixed to the substantially frustoconical region of the end 8a of the metal body 8. In other embodiments, the electrically connected hot junction 5 may be a single electrical connection point rather than an electrical connection area.
In the embodiment shown in fig. 2, the second conductor 3 and the third conductor 4 are partially accommodated in a metal body 8. The thermocouple 1 includes an insulator 9 accommodated in a metal body 8, and the first conductor 2, the second conductor 3, and the third conductor 4 are insulated from each other by the insulator 9.
In the embodiment shown in fig. 2, the thermocouple 1 further includes a metal support 11 in which the metal body 8 is partially accommodated inside the metal support 11, and the electrical connection hot junction 5 protrudes from the metal body 8. A metal support 11 is fixed to the metal body 8, and the second conductor 3 and the third conductor 4 pass through the metal support 11. One end 3a of the second conductor 3 comprises a connector, not shown, by means of which the second conductor 3 is connected to the solenoid valve 6. One end 4a of the third conductor 4 is connected to the booster 7, and the metal stay 11 is also connected to the booster 7 through the connector 14. Finally, the outlets of the boosters 7 are connected to the phase connector 16 and the ground connector 17, respectively.
Claims (8)
1. A flameless thermoelectric safety device for a gas combustion system, the gas combustion system including at least one burner, the thermoelectric safety device (10) comprising: a thermocouple (1) comprising a first conductor (2) and a second conductor (3) made of a different material than the first conductor (2), the first conductor (2) being attached to the second conductor (3) in an electrical connection hot junction (5); -a solenoid valve (6) electrically connected to said first conductor (2) and to said second conductor (3) and configured for allowing the passage of gas through said at least one burner when said at least one burner is excited by said thermocouple (1), characterized in that said thermocouple (1) comprises a third conductor (4) made of a different material from said first conductor (2), said third conductor (4) being connected to said hot point of electrical connection (5) so that, when said hot point of electrical connection (5) heats up, thermoelectric power capable of powering a load (12) is obtained between the outlet of said first conductor (2) and the outlet of said third conductor (4).
2. The flameless thermoelectric safety device for a gas combustion system according to claim 1, characterized in that it comprises a voltage booster (7), said voltage booster (7) being electrically connected to said first conductor (2) and to said third conductor (4) of said thermocouple (1), said voltage booster (7) being configured for boosting the voltage generated between said outlet of said first conductor (2) and said outlet of said third conductor (4), obtaining a voltage capable of powering a load (12).
3. Flameless thermoelectric safety device for gas combustion systems according to any one of claims 1 and 2, characterized in that the first conductor (2) of the thermocouple (1) is formed by a metal body (8), the hot point of electrical connection (5) is formed by an end (8 a) of the metal body (8), an end of the second conductor (3) and an end of the third conductor (4), the second conductor (3) and the third conductor (4) are at least partially housed inside the metal body (8), the second conductor (3), the third conductor (4), and the metal bodies (8) are insulated from each other by an insulator (9).
4. A flameless thermoelectric safety device for a gas combustion system according to claim 3, characterised in that the end (8 a) of the metal body (8) has a frustoconical zone followed by a cylindrical tip.
5. A flameless thermoelectric safety device for a gas combustion system according to claim 3, characterized in that the thermocouple (1) further comprises a metal support (11), the metal body (8) being partially received within the metal support (11), the electrical connection hot junction (5) protruding from the metal body (8), the metal support (11) being fixed to the metal body (8), and a connector (17) being attached to the metal support (11) for grounding.
6. Flameless thermoelectric safety device for gas combustion systems according to claim 1, characterized in that the second conductor (3) and the third conductor (4) of the thermocouple (1) are made of the same metallic material.
7. A flameless thermoelectric safety device for a gas combustion system according to claim 6, characterised in that the second conductor (3) and the third conductor (4) are made of constantan.
8. A gas combustion system, characterized in that it comprises a flameless thermoelectric safety device (10) for a gas combustion system according to any one of claims 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22382281 | 2022-03-25 | ||
| EP22382281.8 | 2022-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218820536U true CN218820536U (en) | 2023-04-07 |
Family
ID=85844144
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211374823.1A Pending CN116839069A (en) | 2022-03-25 | 2022-11-04 | Gas combustion system and flameless thermoelectric safety device for the same |
| CN202222945799.4U Active CN218820536U (en) | 2022-03-25 | 2022-11-04 | Gas combustion system and flameless thermoelectric safety device for same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211374823.1A Pending CN116839069A (en) | 2022-03-25 | 2022-11-04 | Gas combustion system and flameless thermoelectric safety device for the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN116839069A (en) |
| WO (1) | WO2023180603A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9312396U1 (en) * | 1993-08-19 | 1993-10-21 | Seppelfricke Geb Gmbh | Device for setting and monitoring a gas burner |
| ES1058228Y (en) * | 2004-07-30 | 2005-06-16 | Orkli S Coop Ltda | FLAME SECURITY THERMOPAR AND THERMOPAR BODY. |
| CN207132385U (en) | 2017-08-14 | 2018-03-23 | 宁波方太厨具有限公司 | A kind of gas-cooker |
| EP3848632B1 (en) * | 2020-01-08 | 2023-07-12 | Orkli, S. Coop. | Thermoelectric safety device for the absence of a flame in gas combustion systems |
-
2022
- 2022-11-04 CN CN202211374823.1A patent/CN116839069A/en active Pending
- 2022-11-04 CN CN202222945799.4U patent/CN218820536U/en active Active
-
2023
- 2023-03-17 WO PCT/ES2023/070166 patent/WO2023180603A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN116839069A (en) | 2023-10-03 |
| WO2023180603A1 (en) | 2023-09-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |