US20050058959A1 - Gas flow control for gas burners utilizing a micro-electro-mechanical valve - Google Patents
Gas flow control for gas burners utilizing a micro-electro-mechanical valve Download PDFInfo
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- US20050058959A1 US20050058959A1 US10/666,180 US66618003A US2005058959A1 US 20050058959 A1 US20050058959 A1 US 20050058959A1 US 66618003 A US66618003 A US 66618003A US 2005058959 A1 US2005058959 A1 US 2005058959A1
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- microvalves
- gas
- gas burner
- microvalve
- burner
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Classifications
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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
- F23N1/002—Regulating fuel supply using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/03001—Miniaturized combustion devices using fluid fuels
-
- 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
- F23N2235/18—Groups of two or more valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/01001—Micro Electro Mechanical Systems [MEMS] for controlling fuel supply to burners
Definitions
- the present invention is generally related to cooking appliances, and, more particularly, to a micro-electro-mechanical (MEMS) valve for providing a variable gas flow control for gas burners.
- MEMS micro-electro-mechanical
- Gas cooking ranges typically include a manually operated gas valve positioned in a gas line between a gas source and a burner to control gas flow to the burner. Turning of an indicator knob connected to the gas valve selectively opens or closes an orifice in the valve to allow gas to flow through the burner. Unlike electric heating elements that may be electronically controlled and programmed, a user must directly control gas flow in typical gas cooking range, and changes to the flow can only be made by physically moving the knob to adjust the gas flow. To achieve remote control and programmability of gas burners, advanced gas burner ranges may incorporate proportional solenoid valves, motor driven valves, or binary poppet valves, for example, controlled via an electronic touch pad.
- MEMS Micro-electro-mechanical system
- Typical MEMS valves may include a silicon or polymer based microvalve, and may be operated by electrostatic, electromagnetic, shape memory alloy (SMA) or piezoelectric actuation.
- SMA shape memory alloy
- An electronically controlled gas burner system includes at least one gas burner and a micro-electro-mechanical valve comprising a plurality of microvalves in fluid communication with the gas burner.
- the system also includes a microvalve controller for controlling the opening of each of the microvalves in the micro-electro-mechanical valve.
- a method for controlling a plurality of microvalves for firing a gas burner includes issuing a command for a desired gas flow and controlling an opening of at least some of the microvalves valves to provide the desired gas flow corresponding to the command.
- FIG. 1 is an exemplary diagram of a gas burner system comprising a MEMS valve coupled to a burner.
- FIG. 2 is an exemplary diagram of a gas burner system comprising a MEMS valve having portions of a plurality of microvalves coupled to respective burners.
- FIG. 3 is an exemplary diagram of a gas burner comprising an array of microvalves.
- FIG. 1 is an exemplary diagram of a gas burner system 10 comprising a micro-electro-mechanical system (MEMS) valve 12 coupled to a burner 14 .
- the MEMS valve 12 may include one or more microvalves 16 , for example, configured in an array.
- Each of the microvalves 16 may be coupled, for example, by an electrical conductor, to a valve controller 18 for controlling the opening and closing of each of the microvalves 16 in the MEMS valve 12 .
- An output 17 of each of the microvalves 16 may be in fluid communication with the burner 14 , and an input 15 to the each of the microvalves 16 may be in fluid communication with a gas supply 20 .
- each of the microvalves 16 in the MEMS valve 12 may be independently controlled to open or close the microvalves 16 , allowing gas to flow from the gas supply 20 to the burner 14 at a desired rate.
- microvalves may be individually operated, proportional control, offering fine control at low burner powers, may be provided.
- a MEMS valve incorporating a number of microvalves in an array configuration offers the advantages of low cost, reliability, simplicity, small footprints, and heat resistance. Examples of microvalve devices that were used in a prototype constructed for experimental purposes include those as described in U.S. Pat. Nos. 6,149,123 and 6,523,560. It will be appreciated that the present invention is not limited to the foregoing devices since the array aspects of the present invention may be practiced with any type of microvalve devices.
- the microvalves 16 in the MEMS valve 12 may be operated in a continuously variable, or analog, fashion to provide a variable range of microvalve 16 openings, and consequently, variable gas flow from the valve, depending on a degree of opening of the microvalve 16 .
- the microvalves 16 in the MEMS valve 12 may be operated in a binary fashion.
- the microvalve controller 18 may provide a two state control signal having a first state for controlling a microvalve 16 to a closed position, and a second state for controlling the microvalve 16 to an open position. Accordingly, different numbers of microvalves 16 in the MEMS valve 12 may be opened or closed to provide variable gas flow.
- one of the microvalves 16 may be opened to provide a lowest setting for gas flow to the burner 14 .
- Progressively larger numbers of microvalves 16 may be opened to provide increasingly higher gas flows.
- all 10 of the microvalves 16 in the MEMS valve 12 may be opened to provide a highest setting for gas flow.
- the number of microvalves 16 selected for the MEMS valve 12 may be based on the total gas flow required to fire the burners 14 at a desired burner rating, and the gas flow capability of each valve 12 .
- SCFM standard cubic feet per minute
- the microvalve controller 18 may include another module, such as a pulse width modulator (PWM) 24 , to sequentially turn each of the microvalves 16 on and off periodically at a desired duty cycle when the respective microvalve 16 is turned on by the microvalve controller 18 .
- PWM pulse width modulator
- a duty cycle of from 90% to 10% may be used, while a duty cycle of 60% to 40% is believed to promote most stable burning.
- the microvalve controller 18 may be programmed via an electronic interface 22 .
- the electronic interface 22 may include a user interface, such as a touch pad, to allow a user to control a burner 14 gas flow setting for cooking.
- the electronic interface 22 may also provide a programmed gas flow pattern that varies with respect to time, such as an initial comparatively higher flow rate for first desired time period and a comparatively lower flow rate for a second desired time period.
- the electronic interface 22 may allow remote control of the gas burners 14 via a communications interface such as Bluetooth®, registered by Bluetooth SIG, Inc, compatible interface.
- the system 20 may also include at least one sensor 26 to monitor a burning condition at the burner 14 .
- the sensor 26 may be positioned near the burner 14 for monitoring conditions such as temperature or carbon monoxide formation.
- the sensor 26 may provide such information to the microvalve controller 18 in a feedback loop 28 .
- the microvalve controller 18 may then control the opening of at least some of the microvalves 16 to adjust the gas flow to the burner 14 according to the information received from the sensor 26 .
- FIG. 2 is an exemplary diagram of a gas burner system 30 comprising a MEMS valve 12 having portions 32 , 34 , 36 , 38 of an array of microvalves 16 coupled to respective burners 14 .
- each burner 12 may be fluidically connected to a respective portion 32 , 34 , 36 , 38 , and each portion may be controlled by the microvalve controller 18 .
- gas input connections for a gas source such as the gas source 20 shown in FIG. 1 , have been omitted for clarity. As depicted in FIG.
- the MEMS valve 12 may be centrally located with respect to a plurality of burners 14 so that different portions 32 , 34 , 36 , 38 of the MEMS valve 12 may be used to fire each of the burners 14 .
- the microvalve controller 18 may be configured to provide independent control of each portion 32 , 34 , 36 , 38 of the MEMS valve 12 .
- each valve 12 in each portion 32 , 34 , 36 , 38 may be controlled independently to provide variable gas flow to the burner 12 .
- Each portion 32 , 34 , 36 , 38 may include an appropriate number of microvalves 16 to provide a gas flow required to fire the respective burner 12 coupled to the portion 32 , 34 , 36 , 38 .
- the gas burner system 30 may further include the elements described above, such as a PMW module 24 , an electronic interface 22 and a sensor 26 as shown in FIG. 1 .
- FIG. 3 is an exemplary diagram of a gas burner 40 comprising an array of MEMS microvalves 16 .
- gas connections to the inputs 15 of each of the microvalves 16 to a gas source, such as the gas source 20 shown in FIG. 1 have been omitted for clarity.
- the microvalves 16 may be positioned integrally or otherwise within the burner 40 to contribute to a flame produced by the burner 40 .
- the microvalves 16 may be positioned circumferentially in a circular burner so that the output 17 of each the microvalves 16 is oriented to contribute to flames around a periphery of the burner 12 .
- Each of the microvalves 16 may be independently controlled by the microvalve controller 18 to open or close the microvalves 16 to allow gas to flow from the microvalves 16 at a desired rate.
- the gas burner system 30 may further include the elements described above with respect to FIG. 1 , such as a PMW module 24 , an electronic interface 22 and a sensor 26 as shown in FIG. 1
- a MEMS valve comprising an array of microvalves as described above could be constructed as follows.
- the MEMS valve may be configured to have a 15 ⁇ 15 millimeter (mm) footprint and include 100 microvalves.
- the microvalves may be grouped in groups of 10. Each group of 10 valves may be configured to have a collective binary action, so that either all valves in the group are fully open, or completely closed. Accordingly, ten different cumulative flow levels may be provided.
- Each group may be configured to provide a flow level of 0.0180 SCFM, so that a flow level of 0.0180 SCFM is provided when one group is “on” (for example, for a low cooking setting) and 10 times 0.0180 SCFM or 0.180 SCFM when all ten groups are “on” (for example, for a high cooking setting.)
- the exemplary MEMS valve may include microvalves having piezoelectric polymer actuation, and be a normally closed type microvalve.
- a MEMS valve configured as described above could provide electronically controlled proportional flow and operate at 2 to 10 inches of water (iwc).
- the flow variation may be less than +/ ⁇ 10% at a minimum flow and +/ ⁇ 5% at a maximum flow.
- the microvalves may have a 0.25 second response time. It is believed each of the valves could operate for 100,000 cycles with 95% confidence level.
- the array controller would use less than 10 watts of electrical power to control the microvalves in the array.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
An electronically controlled gas burner system and method using a micro-electro-mechanical (MEMS) valve. The system includes at least one gas burner and MEMS valves comprising an array of microvalves in fluid communication with the gas burner. The system also includes a microvalve controller for controlling the opening of each of the microvalves in the MEMS valve. The MEMS valve may be positioned remote from, or within, the gas burner. A method for controlling microvalves in a MEMS valve for firing a gas burner may include issuing a command for a desired gas flow and controlling an opening of at least some of the microvalves in the array to provide the desired gas flow corresponding to the command.
Description
- The present invention is generally related to cooking appliances, and, more particularly, to a micro-electro-mechanical (MEMS) valve for providing a variable gas flow control for gas burners.
- Gas cooking ranges typically include a manually operated gas valve positioned in a gas line between a gas source and a burner to control gas flow to the burner. Turning of an indicator knob connected to the gas valve selectively opens or closes an orifice in the valve to allow gas to flow through the burner. Unlike electric heating elements that may be electronically controlled and programmed, a user must directly control gas flow in typical gas cooking range, and changes to the flow can only be made by physically moving the knob to adjust the gas flow. To achieve remote control and programmability of gas burners, advanced gas burner ranges may incorporate proportional solenoid valves, motor driven valves, or binary poppet valves, for example, controlled via an electronic touch pad. However, such electro-mechanical controls are not suited for appliances because they are complex, require a relatively large footprint for incorporation in a gas range, may be less reliable than manual valves, may not be suitable for use in a high heat environment, and may be prohibitively expensive to manufacture and maintain. In addition, proportional control at low gas flows using electro-mechanical controls has been difficult to achieve. Micro-electro-mechanical system (MEMS) valves have been proposed for low flow, high-pressure applications. Typical MEMS valves may include a silicon or polymer based microvalve, and may be operated by electrostatic, electromagnetic, shape memory alloy (SMA) or piezoelectric actuation. However, such valves are not believed to be suited for low pressure, high flow applications.
- An electronically controlled gas burner system is presented that includes at least one gas burner and a micro-electro-mechanical valve comprising a plurality of microvalves in fluid communication with the gas burner. The system also includes a microvalve controller for controlling the opening of each of the microvalves in the micro-electro-mechanical valve.
- A method for controlling a plurality of microvalves for firing a gas burner is presented that includes issuing a command for a desired gas flow and controlling an opening of at least some of the microvalves valves to provide the desired gas flow corresponding to the command.
-
FIG. 1 is an exemplary diagram of a gas burner system comprising a MEMS valve coupled to a burner. -
FIG. 2 is an exemplary diagram of a gas burner system comprising a MEMS valve having portions of a plurality of microvalves coupled to respective burners. -
FIG. 3 is an exemplary diagram of a gas burner comprising an array of microvalves. -
FIG. 1 is an exemplary diagram of agas burner system 10 comprising a micro-electro-mechanical system (MEMS)valve 12 coupled to aburner 14. TheMEMS valve 12 may include one ormore microvalves 16, for example, configured in an array. Each of themicrovalves 16 may be coupled, for example, by an electrical conductor, to avalve controller 18 for controlling the opening and closing of each of themicrovalves 16 in theMEMS valve 12. Anoutput 17 of each of themicrovalves 16 may be in fluid communication with theburner 14, and aninput 15 to the each of themicrovalves 16 may be in fluid communication with agas supply 20. Accordingly, each of themicrovalves 16 in theMEMS valve 12 may be independently controlled to open or close themicrovalves 16, allowing gas to flow from thegas supply 20 to theburner 14 at a desired rate. - In the past, it was believed that the low flow characteristics of conventional MEMS valves precluded their use in gas burner applications. However, the inventors of the present invention have innovatively realized that by using an array of microvalves, improved electronic control of gas burners may be provided. Moreover, because the microvalves may be individually operated, proportional control, offering fine control at low burner powers, may be provided. Furthermore, a MEMS valve incorporating a number of microvalves in an array configuration offers the advantages of low cost, reliability, simplicity, small footprints, and heat resistance. Examples of microvalve devices that were used in a prototype constructed for experimental purposes include those as described in U.S. Pat. Nos. 6,149,123 and 6,523,560. It will be appreciated that the present invention is not limited to the foregoing devices since the array aspects of the present invention may be practiced with any type of microvalve devices.
- In an aspect of the invention, the
microvalves 16 in theMEMS valve 12 may be operated in a continuously variable, or analog, fashion to provide a variable range ofmicrovalve 16 openings, and consequently, variable gas flow from the valve, depending on a degree of opening of themicrovalve 16. In another aspect of the invention, themicrovalves 16 in theMEMS valve 12 may be operated in a binary fashion. For example, themicrovalve controller 18 may provide a two state control signal having a first state for controlling amicrovalve 16 to a closed position, and a second state for controlling themicrovalve 16 to an open position. Accordingly, different numbers ofmicrovalves 16 in theMEMS valve 12 may be opened or closed to provide variable gas flow. For example, in an array comprising tenmicrovalves 16, one of themicrovalves 16 may be opened to provide a lowest setting for gas flow to theburner 14. Progressively larger numbers ofmicrovalves 16 may be opened to provide increasingly higher gas flows. Accordingly, all 10 of themicrovalves 16 in theMEMS valve 12, may be opened to provide a highest setting for gas flow. In an aspect of the invention, the number ofmicrovalves 16 selected for theMEMS valve 12 may be based on the total gas flow required to fire theburners 14 at a desired burner rating, and the gas flow capability of eachvalve 12. For example, if a burner requires a total gas flow of 0.18 standard cubic feet per minute (SCFM) to operate at a desired BTU capability, and each valve in the array can provide 0.018 SCFM, then ten valves (10×0.018=0.18 SCFM) may be used to control the gas flow to the burner. - In yet another aspect, the
microvalve controller 18 may include another module, such as a pulse width modulator (PWM) 24, to sequentially turn each of themicrovalves 16 on and off periodically at a desired duty cycle when therespective microvalve 16 is turned on by themicrovalve controller 18. For example, a duty cycle of from 90% to 10% may be used, while a duty cycle of 60% to 40% is believed to promote most stable burning. By modulating the opening and closing of each of themicrovalves 16 in this manner, it is believed that combustion in theburner 14 may be made more efficient. - In another aspect of the invention, the
microvalve controller 18 may be programmed via anelectronic interface 22. For example, theelectronic interface 22 may include a user interface, such as a touch pad, to allow a user to control aburner 14 gas flow setting for cooking. Theelectronic interface 22 may also provide a programmed gas flow pattern that varies with respect to time, such as an initial comparatively higher flow rate for first desired time period and a comparatively lower flow rate for a second desired time period. In addition, theelectronic interface 22 may allow remote control of thegas burners 14 via a communications interface such as Bluetooth®, registered by Bluetooth SIG, Inc, compatible interface. - The
system 20 may also include at least onesensor 26 to monitor a burning condition at theburner 14. For example, thesensor 26 may be positioned near theburner 14 for monitoring conditions such as temperature or carbon monoxide formation. Thesensor 26 may provide such information to themicrovalve controller 18 in afeedback loop 28. Themicrovalve controller 18 may then control the opening of at least some of themicrovalves 16 to adjust the gas flow to theburner 14 according to the information received from thesensor 26. -
FIG. 2 is an exemplary diagram of agas burner system 30 comprising aMEMS valve 12 havingportions microvalves 16 coupled torespective burners 14. For example, eachburner 12 may be fluidically connected to arespective portion microvalve controller 18. InFIG. 2 , gas input connections for a gas source, such as thegas source 20 shown inFIG. 1 , have been omitted for clarity. As depicted inFIG. 2 , theMEMS valve 12 may be centrally located with respect to a plurality ofburners 14 so thatdifferent portions MEMS valve 12 may be used to fire each of theburners 14. For example, themicrovalve controller 18 may be configured to provide independent control of eachportion MEMS valve 12. In addition, eachvalve 12 in eachportion burner 12. Eachportion microvalves 16 to provide a gas flow required to fire therespective burner 12 coupled to theportion gas burner system 30 may further include the elements described above, such as aPMW module 24, anelectronic interface 22 and asensor 26 as shown inFIG. 1 . -
FIG. 3 is an exemplary diagram of agas burner 40 comprising an array ofMEMS microvalves 16. InFIG. 3 , gas connections to theinputs 15 of each of themicrovalves 16 to a gas source, such as thegas source 20 shown inFIG. 1 , have been omitted for clarity. In an aspect of the invention, themicrovalves 16 may be positioned integrally or otherwise within theburner 40 to contribute to a flame produced by theburner 40. For example, themicrovalves 16 may be positioned circumferentially in a circular burner so that theoutput 17 of each themicrovalves 16 is oriented to contribute to flames around a periphery of theburner 12. Each of themicrovalves 16 may be independently controlled by themicrovalve controller 18 to open or close themicrovalves 16 to allow gas to flow from themicrovalves 16 at a desired rate. Thegas burner system 30 may further include the elements described above with respect toFIG. 1 , such as aPMW module 24, anelectronic interface 22 and asensor 26 as shown inFIG. 1 - It is believed that a MEMS valve comprising an array of microvalves as described above could be constructed as follows. For example, the MEMS valve may be configured to have a 15×15 millimeter (mm) footprint and include 100 microvalves. The microvalves may be grouped in groups of 10. Each group of 10 valves may be configured to have a collective binary action, so that either all valves in the group are fully open, or completely closed. Accordingly, ten different cumulative flow levels may be provided. Each group may be configured to provide a flow level of 0.0180 SCFM, so that a flow level of 0.0180 SCFM is provided when one group is “on” (for example, for a low cooking setting) and 10 times 0.0180 SCFM or 0.180 SCFM when all ten groups are “on” (for example, for a high cooking setting.) The exemplary MEMS valve may include microvalves having piezoelectric polymer actuation, and be a normally closed type microvalve.
- It is believed that a MEMS valve configured as described above could provide electronically controlled proportional flow and operate at 2 to 10 inches of water (iwc). The flow variation may be less than +/−10% at a minimum flow and +/−5% at a maximum flow. The microvalves may have a 0.25 second response time. It is believed each of the valves could operate for 100,000 cycles with 95% confidence level. Furthermore, it is believed the array controller would use less than 10 watts of electrical power to control the microvalves in the array.
- While the preferred embodiments of the present invention have been shown and described herein, it will be obvious that such embodiments are provided by way of example only. Numerous variations, changes and substitutions will occur to those of skill in the art without departing from the invention herein. While an exemplary embodiment of a cooking appliance for use in stove is described, the invention may be used any application having a gas burner. Accordingly, it is intended that the invention be limited only by the spirit and scope of the appended claims.
Claims (23)
1. An electronically controlled gas burner system comprising:
at least one gas burner;
a micro-electro-mechanical valve comprising a plurality of microvalves in parallel fluid communication with the gas burner; and
a microvalve controller for controlling the opening of each of the microvalves in the micro-electro-mechanical valve.
2. The system of claim 1 , wherein the micro-electro-mechanical valve is positioned remote from the gas burner.
3. The system of claim 1 , wherein the micro-electro-mechanical valve is positioned within the gas burner.
4. The system of claim 1 , wherein the micro-electro-mechanical valve is coupled to a plurality of gas burners.
5. The system of claim 4 , wherein a portion of the plurality of microvalves in the micro-electro-mechanical valve is coupled to a respective one of the plurality of gas burners.
6. The system of claim 1 , wherein the microvalve controller further comprises a module to selectively control an opening of each of the microvalves for controlling a gas output.
7. The system of claim 1 , wherein the module comprises a pulse width modulator.
8. The system of claim 1 , wherein the microvalve controller is further coupled to an electronic interface programmable by a user.
9. The system of claim 1 , wherein the microvalve controller is further coupled to a sensor positioned proximate the burner.
10. An electronically controlled gas burner system comprising:
at least one gas burner; and
a micro-electro-mechanical valve comprising a plurality of independently controllable microvalves in parallel fluid communication with the gas burner.
11. (canceled)
12. The gas burner of claim 10 , further comprising a microvalve controller for controlling an opening of each of the microvalves.
13. The gas burner of claim 12 , wherein each of the microvalves is configured to contribute to a flame when opened by the microvalve controller.
14. The gas burner of claim 12 , wherein the microvalve controller further comprises a pulse width modulator to modulate the opening of each of the microvalves for controlling a gas output.
15. The gas burner of claim 14 , wherein the pulse width modulator operates at duty cycle in the range of between 90% and 10%.
16. The gas burner of claim 15 , wherein the pulse width modulator operates at duty cycle in the range of between 60% and 40%.
17. A gas valve comprising a plurality of microvalves in parallel fluid communication with a gas burner of a cooking appliance.
18. The gas valve of claim 17 , further comprising a microvalve controller for controlling the opening of each of the microvalves.
19. A method for controlling to a gas burner comprising:
issuing a command for a desired gas flow; and
controlling opening of at least some of a plurality of independently controllable microvalves in parallel fluid communication to provide the desired gas flow corresponding to the command.
20. The method of claim 19 , further comprising allocating a portion of the plurality of microvalves to a respective burner of a multiburner appliance.
21. The method of claim 19 , wherein controlling an opening of each of the microvalves comprises driving the microvalve to be fully open.
22. The method of claim 19 , further comprising:
issuing a feedback command to adjust the gas flow; and
adjusting the gas flow by changing the opening of at least some of the microvalves.
23. The gas valve of claim 17 , wherein the plurality of microvalves are independently controllable.
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US10/666,180 US20050058959A1 (en) | 2003-09-17 | 2003-09-17 | Gas flow control for gas burners utilizing a micro-electro-mechanical valve |
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US10/666,180 US20050058959A1 (en) | 2003-09-17 | 2003-09-17 | Gas flow control for gas burners utilizing a micro-electro-mechanical valve |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060166152A1 (en) * | 2005-01-21 | 2006-07-27 | Damien Feger | Gas incinerator installed on a liquefied gas tanker ship or a liquefied gas terminal |
US20070151251A1 (en) * | 2006-01-03 | 2007-07-05 | Haynes Joel M | Counterflow injection mechanism having coaxial fuel-air passages |
US20070151250A1 (en) * | 2006-01-03 | 2007-07-05 | Haynes Joel M | Gas turbine combustor having counterflow injection mechanism |
EP3376104A1 (en) * | 2017-03-16 | 2018-09-19 | Vestel Elektronik Sanayi ve Ticaret A.S. | An adjustable gas burner |
US11042629B2 (en) * | 2018-10-09 | 2021-06-22 | EMC IP Holding Company LLC | Preventing malicious lockout of user accounts |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4770161A (en) * | 1986-03-06 | 1988-09-13 | Chaffoteaux & Maury | Gas water heaters or bath heaters |
US5932940A (en) * | 1996-07-16 | 1999-08-03 | Massachusetts Institute Of Technology | Microturbomachinery |
US5938425A (en) * | 1996-07-09 | 1999-08-17 | Gagenau Hausgerate GmbH | Method and device for control of the flame size of gas-fired cooking or baking appliances |
US5951276A (en) * | 1997-05-30 | 1999-09-14 | Jaeschke; James R. | Electrically enhanced hot surface igniter |
US5984664A (en) * | 1995-02-16 | 1999-11-16 | Bg Plc | Apparatus for providing an air/fuel mixture to a fully premixed burner |
US6114794A (en) * | 1996-12-16 | 2000-09-05 | Cronos Integrated Microsystems, Inc. | Thermal arched beam microelectromechanical valve |
US6149123A (en) * | 1996-09-27 | 2000-11-21 | Redwood Microsystems, Inc. | Integrated electrically operable micro-valve |
US6321531B1 (en) * | 1996-12-18 | 2001-11-27 | Litex, Inc. | Method and apparatus for using free radicals to reduce pollutants in the exhaust gases from the combustion of a fuel |
US6386507B2 (en) * | 1999-09-01 | 2002-05-14 | Jds Uniphase Corporation | Microelectromechanical valves including single crystalline material components |
US6523560B1 (en) * | 1998-09-03 | 2003-02-25 | General Electric Corporation | Microvalve with pressure equalization |
US6557820B2 (en) * | 2001-05-22 | 2003-05-06 | Lockheed Martin Corporation | Two-stage valve suitable as high-flow high-pressure microvalve |
US6705533B2 (en) * | 2001-04-20 | 2004-03-16 | Gas Research Institute | Digital modulation for a gas-fired heater |
US6733279B2 (en) * | 2001-04-05 | 2004-05-11 | Harold D. Thigpen | Remote microcontrolled laser oil lamp |
-
2003
- 2003-09-17 US US10/666,180 patent/US20050058959A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4770161A (en) * | 1986-03-06 | 1988-09-13 | Chaffoteaux & Maury | Gas water heaters or bath heaters |
US5984664A (en) * | 1995-02-16 | 1999-11-16 | Bg Plc | Apparatus for providing an air/fuel mixture to a fully premixed burner |
US5938425A (en) * | 1996-07-09 | 1999-08-17 | Gagenau Hausgerate GmbH | Method and device for control of the flame size of gas-fired cooking or baking appliances |
US5932940A (en) * | 1996-07-16 | 1999-08-03 | Massachusetts Institute Of Technology | Microturbomachinery |
US6149123A (en) * | 1996-09-27 | 2000-11-21 | Redwood Microsystems, Inc. | Integrated electrically operable micro-valve |
US6114794A (en) * | 1996-12-16 | 2000-09-05 | Cronos Integrated Microsystems, Inc. | Thermal arched beam microelectromechanical valve |
US6321531B1 (en) * | 1996-12-18 | 2001-11-27 | Litex, Inc. | Method and apparatus for using free radicals to reduce pollutants in the exhaust gases from the combustion of a fuel |
US5951276A (en) * | 1997-05-30 | 1999-09-14 | Jaeschke; James R. | Electrically enhanced hot surface igniter |
US6523560B1 (en) * | 1998-09-03 | 2003-02-25 | General Electric Corporation | Microvalve with pressure equalization |
US6386507B2 (en) * | 1999-09-01 | 2002-05-14 | Jds Uniphase Corporation | Microelectromechanical valves including single crystalline material components |
US6733279B2 (en) * | 2001-04-05 | 2004-05-11 | Harold D. Thigpen | Remote microcontrolled laser oil lamp |
US6705533B2 (en) * | 2001-04-20 | 2004-03-16 | Gas Research Institute | Digital modulation for a gas-fired heater |
US6557820B2 (en) * | 2001-05-22 | 2003-05-06 | Lockheed Martin Corporation | Two-stage valve suitable as high-flow high-pressure microvalve |
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US20070151251A1 (en) * | 2006-01-03 | 2007-07-05 | Haynes Joel M | Counterflow injection mechanism having coaxial fuel-air passages |
US20070151250A1 (en) * | 2006-01-03 | 2007-07-05 | Haynes Joel M | Gas turbine combustor having counterflow injection mechanism |
US8387390B2 (en) | 2006-01-03 | 2013-03-05 | General Electric Company | Gas turbine combustor having counterflow injection mechanism |
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