CN107949748A - Electric guide's static valve for gas burner - Google Patents
Electric guide's static valve for gas burner Download PDFInfo
- Publication number
- CN107949748A CN107949748A CN201680044168.XA CN201680044168A CN107949748A CN 107949748 A CN107949748 A CN 107949748A CN 201680044168 A CN201680044168 A CN 201680044168A CN 107949748 A CN107949748 A CN 107949748A
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- CN
- China
- Prior art keywords
- electric actuator
- exit passageway
- vernier
- actuator according
- shutter
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
-
- 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
-
- 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
- F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/06—Fail safe for flame failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/06—Fail safe for flame failures
- F23N2231/08—Fail safe for flame failures for pilot flame failures
-
- 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
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/16—Fuel valves variable flow or proportional valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
- Magnetically Actuated Valves (AREA)
- Electromagnets (AREA)
Abstract
The purpose of the present invention is a kind of electric actuator for gas stove etc.（1）, by actuation means guide, including：At least one safety electromagnetic iron（4）, it forms a part for guide's stabilizer；The stopper of at least one fuel gas（2）, it is generally with exit passageway（22）With the pipeline of fuel gas（23）Casing, at least one safety shutter（20）, wherein pressure/pulling force (FF) act on thereon, make the exit passageway（22）Safety shutdown；At least one service shutter（20）；With cavity（100）Supporting structure（10）, wherein bar（21）Slide and place in cavity, with the safety electromagnetic iron（4）At least one ferromagnetic element coordinated（32）With the stopper with fuel gas（2）The shutter coordinated（20）It is constrained, wherein the safety shutter（20）With the service shutter（20）Overlap in identical shutter（20）；When the safety electromagnetic iron（4）When powering especially through the flame sensor of guide's stabilizer, the ferromagnetic element（32）Pass through the anchor force (F to attract each other of appearanceP) anchor to the safety electromagnetic iron（4）, it is characterised in that：The pressure/pulling force (FF) it is magnetic properties, it is easy to by for the exit passageway（22）Order power (the F for opening and applyingS) and the anchor force (FP) exceed.
Description
Technical field
The present invention relates to a kind of electricity-guide's static system (electro-pilotstatic for gas burner
System), it is particularly a kind of electric actuator for being used for gas stove etc. equipped with security system.
Background technology
Currently available technology provides different solutions for the dispatching and adjusting of the fuel gas for cooking stove, it is also contemplated that
Ensure safe different system.
For example, common cooking stove is equipped with a security system, valve is advantageously comprised, when surprisingly turning off flame, its is automatic
Stop flowing of the fuel gas to burner.
Solution that is well-known and using, which provides, uses linear cut-off valve, it is (usual relative to manual modulation valve
It is rotation plug valve (mouth)) order installation.
By interacting with plug cock, user performs manual operation, and the shutter (shutter) of safety valve is moved rearwards,
The ferromagnetic retainer by its limitation is set to be contacted with electromagnet, so as to allow to pass through for the gas of burner ignition；The electromagnetism
Iron is controlled and supplied by flame detector.
The flame detector usually utilizes the thermocouple being placed around in burner flame；It is described in the presence of flame
Thermocouple generates an electrical potential difference that can produce electric current, and the electric current supplies the solenoid of the electromagnet.
Magnetic field caused by solenoid is enough to keep shutter in its open position, and ensures that fuel gas is supplied to burning
Device.
Just in case flame surprisingly extinguishes, thermocouple no longer produces any electrical potential difference, and thus it stops the solenoid to electromagnet
Electric power is supplied, the solenoid is no longer able to produce the magnetic field for keeping shutter enough, under the thrust of elastic device (such as spring),
The shutter returns to resting position, closes valve so as to interrupt air-flow；This avoids unintentionally close flame in the case of, gas
Body continue conveyed by valve, be dispersed in the indoor environment of surrounding (be typically kitchen or for prepare and cooking food and meals
Room), serious risk is caused to people and things.
Electromagnet-thermoelectricity even coupling is known to be " guide's static state ", and is widely used in each burner, to ensure cooking stove
Safe handling.
The equipment that the various solutions proposed according to the prior art propose to will be suitable for controlling and adjust gas stream is with fitting
Separation and difference are kept in the equipment of security.
It is described split be related to the installations of multiple components in cooking stove etc., the property of wherein overall dimensions be it is extremely relevant,
And it is one of target of designer and manufacturer's pursuit to save space.
The normal shut-off valve that closes on the market realizes passing through for gas by long distance electric control.
In fact, for safety, the shut-off valve is to close in resting position, and in operating position, pass through a company
Continuous control signal, they are continuously kept opened.
This operative configuration is related to energy dissipation and the heating of Electrical and Electronic equipment；The latter may produce with the time
The deterioration of raw cable insulation and going bad for same circuits, cause failure or damage.
The content of the invention
The main object of the present invention is to provide a kind of electric actuator for gas stove etc., it is combined in single element
With security-related part and the part related with flow-rate adjustment.
Particularly, the main object of the present invention is to provide a kind of electric actuator for gas stove etc., it is in a list
The flow-rate adjustment of fuel gas and automatically cutting off for the fuel gas in the case where surprisingly turning off flame are integrated in one element.
It is a further object of the present invention to provide a kind of electric actuator for gas stove etc., it allows only in its period of energization
Between supply air flow control and adjustment equipment, once adjust complete at once pause electric energy supply.
Above-mentioned purpose and the other purposes that hereinafter will clearly show, by following specification and the composition explanation
The electric drive for being used for gas stove etc. described in the appended claims of one part of book and realize.
Brief Description Of Drawings
Further characteristic of the invention is by the description below of the preferred embodiment according to Patent right requirement and more preferable
Ground is emphasized, and is only shown by way of non-limiting example in attached drawing form, wherein：
- Fig. 1 show first embodiment according to the present invention in closing or the profile of the electric actuator of resting position；
- Fig. 2 shows that first embodiment is in the profile of the electric actuator of opening or operating position according to the present invention；
- Fig. 3 shows that second embodiment is in closing or the profile of the electric actuator of resting position according to the present invention；
- Fig. 4 shows that second embodiment is in the profile of the electric actuator of opening or operating position according to the present invention；
- Fig. 5 shows the profile of another electric actuator for performing variation according to the present invention；
- Fig. 6 shows the electric actuator according to the present invention with film；
- Fig. 7 compares two profiles of the electric actuator according to the present invention under opening condition and closedown condition.
- Fig. 8 shows the parameter of electric actuator according to the present invention and the summary sheet of operative configuration；
- Fig. 9 a and 9b show two examples of the gas trap suitable for blowing air burner, wherein basis can be used
The electric actuator of the present invention.
Unless otherwise indicated, any possible georeferencing in this report, such as term up/down, front/rear, right/left,
Refer to showing the position of element in attached drawing.
The feature of the present invention is described using reference numeral in attached drawing.
On attached drawing, the electric actuator 1 for gas stove etc. is with safety electromagnetic iron 4, fuel gas according to the present invention
Stopper 2, equipped with the sleeve of exit passageway 22 and fuel gas conduit 23, with the stopper 2 coordinate at least
One service shutter 20 and at least one safety shutter 20, wherein pressure/pulling force effect on it so that the electric actuator 1
Safety shutdown, advantageously described pressure/pulling force are magnetic or elastic propertys.
The service shutter and the safety shutter are overlapped in identical shutter 20, it performs two tasks at the same time：
- cut off the fuel gas of burner to be sent to；
- when burner or flame closing, the stopper 2 of safety shutdown fuel gas.
Pressure/the pulling force effect operates the safety shutdown of electric actuator 1, the particularly pressure on the shutter 20
Operate the safety shutdown of the exit passageway 22 of fuel gas.
Electric actuator 1 includes supporting structure 10, it is essentially tubulose and is preferably made of nonmagnetic substance, its both ends
It is separately installed with the stopper 2 (being substantially sleeve) of safety electromagnetic iron device 4 and fuel gas.
Cavity 100 is provided with the supporting structure 10, places bar 21 wherein sliding, it has the member to magnetic-field-sensitive
Part 30.The bar 21 of suitable control plays the role of opening and/or closes the stopper 2 of fuel gas.
The detailed description of attached drawing is provided below by non-limiting example.
Fig. 1 is shown according to the present invention in closing or the profile of the electric actuator of resting position.
The cavity 100 for being mounted with bottom 101 is provided with the supporting structure 10, wherein being placed with and the one of bar 21
Vernier 30, the vernier 30 is to magnetic-field-sensitive.
The bottom 101 coordinates to realize magnetic force with vernier 30, the peace of operated by magnetic force electric actuator 1 according to the present invention
Contract fully.
In this construction variation, the vernier 30 includes permanent magnet, and the bottom 101 includes ferromagnet.
According to alternative embodiment, the vernier 30 can advantageously comprise ferromagnet, and bottom 101 may include permanent magnetic
Iron, the correct operation without changing electric actuator 1, or both vernier 30 and bottom 101 may comprise permanent magnet.
Under normal circumstances, due to their material of making and their mutual alignment, between bottom 101 and vernier 30
Magnetic interaction must assure that for any use condition and for any position of shutter 20 or electromagnet 4 (" often closing " bar
Part).
In order to ensure " often close " condition of electric actuator 1, the position of vernier 30 and bottom 101, manufacture they material and
The opening and/or shutdown mode of burner are to treat selection and parameter to be defined.
The bottom 101 including ferromagnetic material disk has centre bore 111, for bar 21 by and slide, the bar
21 is integral with the vernier 30.
One end of the bar 21, is advantageously made of nonmagnetic substance, has at least one ferromagnetic element 32, the ferromagnetic member
Part 32 coordinates with safety electromagnetic device 4；The other end of bar 21 and the one of shutter 20.
Shutter 20 and the casing 2 of fuel gas coordinate；Especially, shutter 20 opens or closes the exit passageway of fuel gas
22, it is allowed to which fuel gas leads to the exit passageway 22 from pipeline 23, towards corresponding burner (not shown).
With reference to the prior art, according to as shown and described above, pass through the thermoelectricity being placed near burner flame area
It is even, advantageously control safety electromagnetic iron 4.
Therefore, when burner is closed, thermocouple does not provide any kind of electric current to the electromagnet 4, then electromagnetism
Iron power-off does not produce any magnetic field；In this case, do not have between electromagnet 4 and ferromagnetic element 32 any kind of important
Interaction.
In Fig. 1, electric actuator 1 is in the closed position and shutter 20 closes the exit passageway 22 of fuel gas.
Ensure the closing of the electric actuator 1 of variation according to the present invention by the magnetic force between vernier 30 and bottom 101；The magnetic
Power makes bar 21 fix and stablize, and to lock shutter 20 at the mouth of the exit passageway 22 of fuel gas, prevents from entering fuel gas
Body.
Configured by the closing represented in analysis chart 1 in more detail, may infer that unique active force is in bottom 101 and trip
Magnetic force between mark 30.
In fact, what electromagnet 4 was powered off, so substantially not attracting between the electromagnet 4 and ferromagnetic element 32
Magnetic force；Therefore, translated by the magnetic force of the attraction between bottom 101 and vernier 30, bar 21 towards casing 2.
The magnetic force is realized and ensure that the shut-off of electric actuator 1, is engaged at the mouth of the exit passageway 22 of fuel gas
Shutter 22, so as to close it.
Fig. 2 show according to the present invention opening or operating position electric actuator profile.
In figure, electric actuator 1 is visible in open position, i.e. the exit passageway 22 of fuel gas and fuel gas
Pipeline 23 connects.
Consider Fig. 1 and Fig. 2, let it is assumed that the burner for it is expected to open cooking stove.
By appropriate actuation means (not shown), user is by translating bar 21 towards the electromagnet 4, making ferromagnetic element
The 32 contact electromagnet 4 and manual actuation electric actuator 1.
The shutter 20 being positioned on bar 21, is removed from the exit passageway 22 of the fuel gas, therefore allows gas from going out
Mouth passage 22 enters and reaches burner, and allows to open it.
When the flame of burner is opened, thermocouple starts to produce electric current, electric current excitation electromagnet 4, it is ensured that the electricity
Magnetic coupling between magnet 4 and ferromagnetic element 32.
In fact, the magnetic force of the attraction between electromagnet 4 and ferromagnetic element 32 is more than between vernier 30 and bottom 101
The magnetic force of existing attraction；This allows to keep electromagnet 4 and ferromagnetic element 32 to be integrally formed.
As flame is opened, suspend (being applied by user by actuation means) holding electromagnet 4 and ferromagnetic element 32 connects
Tactile mechanism, and ensure that valve is opened by thermocouple, the thermocouple, which produces, keeps electromagnet 4 to be powered required electricity
Stream.
Transition period of the order to thermocouple into operation is opened from user, by keeping ferromagnetic element 32 and electromagnetism
The mechanism that iron 4 contacts ensures passing through for gas.
In the case where accidental switching off flame, thermocouple does not produce any electrical potential difference, and therefore, electromagnet 4 is no longer powered, and loses
Go the magnetic coupling with the ferromagnetic element of bar 21 32；This causes the closing of electric actuator 1, due between bottom 101 and vernier 30
Attraction magnetic force.
If it is desired to which burner is automatically closed, by appropriate actuation means, user decouples ferromagnetic element from electromagnet 4
32, or the current channel stopped to electromagnet；And in this case by the attraction between vernier 30 and bottom 101
The closing of electric actuator 1 is provided.
Shutdown command can be obtained further by the microswitch on thermocouple circuit or by the bypass circuit of electromagnet 4
, when user closes, all or part of electric current that the thermocouple produces passes through from bypass circuit so that the magnetic of electromagnet 4
Field is especially small, to allow pressure to close the passage of fuel gas.
Shown in above-mentioned Fig. 1 and Fig. 2 embodiment there is provided pass through at least one ferromagnetic element and at least one permanent magnet
The magnetic force of generation holds the valve in closed position.
In these cases, using vernier 30 is made towards the attraction of bottom 101, make bar 21 translated towards sleeve 2 and
Shutter 2 is engaged at the mouth of the exit passageway 22 of fuel gas, makes its closing.
Construction variation (not shown) is provided using repulsive force.
The configuration (valve is closed in a stationary situation) is kept in this way, until user manipulates electric actuator by actuation means
1 to open the burner of cooking stove.
In existing electric actuator, using the elastic force usually applied by compression helical spring, to realize " often closing " bar
Part.According to the electric actuator 1 of the above embodiment, it is characterised in that it realizes " often closing " condition and when described by magnetic force
Electric actuator 1 is closed or in quiescent conditions, and use is it assures that the closing of the exit passageway 22 of fuel gas.
Mean there are several advantages with magnetic force substitution spring, be to eliminate element easy to wear first.
In fact, spring is the component by constant mechanical stress, the degeneration and abrasion of flexible member are result in, may be caused
Operational issue.
In addition, spring can be blocked or stopped, jeopardizing the safety of valve, and be present in the magnetic force between ferromagnet and permanent magnet,
Due to their property, and this problem is not present.
With reference to Fig. 3 and 4, second possible embodiment of the present invention is now described, is illustrated by non-limiting example.
Fig. 3 is shown according to the present invention in closing or the section of the electric actuator 1 of resting position.
In this construction variation, in addition to the element having been described above, electric actuator 1 advantageously comprises solenoid 33, it is logical
Support component 330 is crossed to be connected on the wall of the supporting structure 10.
The solenoid 33 is coaxial with supporting structure 10 and coordinates with vernier 30, with realize the closing of electric actuator 1 and
Open.
In figure 3, electric actuator 1 is in the closed position, and shutter 20 closes the exit passageway 22 of fuel gas, such as preceding institute
State and (pass through magnetic force).
Fig. 4 show according to the present invention opening or operating position electric actuator profile, i.e. fuel gas goes out
Mouth passage 22 is connected with the pipeline 23 of fuel gas.
Consider Fig. 3 and Fig. 4, let it is assumed that the burner for it is expected to open cooking stove.
By appropriate starter (not shown), user activates the electric energy supply for solenoid 33, it is being propped up at once
Magnetic field is created within support element 33.
Induced field applying power on vernier 30, forces bar 21 to be translated towards electromagnet 4, and the induced field produces
Power bigger, and be in opposite direction relative to the attraction magnetic force between bottom 101 and vernier 30.
The translation of bar 21 contacts ferromagnetic element 32 and the surface of electromagnet 4, and opens the exit passageway 22 of fuel gas.
When flame is opened, the electric energy supply pause of solenoid 33, it no longer produces any kind of magnetic field, and passes through
The magnetic force of attraction between ferromagnetic element 32 and electromagnet 4 come ensure valve open.
Transition period of the order to thermocouple into operation is opened from user, solenoid 33 ensures gas passage, after
Continue and power in the time interval for solenoid, so that by the interaction between induced field and vernier 30, keep iron
Magnetic cell 32 is contacted with electromagnet 4.
In the case where surprisingly turning off flame, electromagnet 4 is no longer powered by thermocouple, loses the magnetic coupling with ferromagnetic element 32
Close；The magnetic force of attraction between bottom 101 and vernier 30 causes the closing of electric actuator 1.
If it is desired to which burner is automatically shut down, by appropriate actuation means, user activates the electric energy for solenoid 33
Supply, but there is reversed polarity compared with opening signal, so as to produce the opposite magnetic field of front direction therewith, or block electromagnet
Electric current passes through in 4.
In this case, induced by magnetic field vernier 30 is moved towards sleeve 2, by decoupling ferromagnetic element 32 from electromagnet 4,
And shutter 20 is locked at the mouth of exit passageway 22 of fuel gas by the magnetic force.
The configuration, i.e., close valve in quiescent conditions, keeps in this way, until user manipulates electric actuator by actuation means
1 to open the burner of cooking stove.
Electric actuator 1 according to the present invention only burner open with during automatically shutting down step to connect solenoid 33
Energy supply, and powered off for the normal activity of burner, solenoid 33.
The solution allows the energy absorption for reducing electric actuator 1 according to the present invention, and prevents due to for a long time
Electric component overheats caused by operation.
The typical operating voltages of preferably solenoid 33 are generally less than or the 24V equal to direct current, and line solenoid
The number of turns is substantially greater than or equal to 200.
In order to further reduce the fever of solenoid 33 and improve its service life, can advantageously supply with change duty
The square wave of ratio, to obtain maximum mobile power.
The fraction of time and the total time of detection that duty cycle or active duty cycle are entities to be passed through in active state, example
Such as considering square-wave signal, duty cycle is the ratio of active signal duration and signal total cycle, and for representing the more of cycle
Small part signal is active.
In addition, electric actuator 1 allows to be switched on and off burner from remote location according to the present invention, because user performs
Actuation commands its be substantially electrically and non-mechanical nature.
Fig. 5 shows the profile of another possible electric actuator for performing variation according to the present invention；
In Figure 5, electric actuator 1 is in the closed position and shutter 20 closes the exit passageway 22 of fuel gas.
In this construction variation, pressure is elastic property, and electric actuator 1 by spring-loaded device (advantageously
Compression helical spring 200) it is maintained at normal off position.
In fact, by observing attached drawing, it is to be understood that spring 200 props up shutter 20, while keeps fuel gas
Exit passageway 22 is closed.
Compared with embodiment before, magnetic force (remaining closed the exit passageway of fuel gas) is by the spring
200 elastic force given are substituted.
In this construction variation, vernier 210 is provided as including ferromagnetic element.
The vernier 210 coordinates with bottom 102, it is also made of ferromagnetic material, is positioned within cavity 100.
On foregoing description, the burner for it is expected to open cooking stove is let it is assumed that.
By appropriate starter (not shown), user activates the electric energy supply for solenoid 33, produces magnetic field, its
Induction vernier 210 is translated towards electromagnet 4, the power bigger that the induced field produces, and relative to compression helical spring 200
The elastic force for being applied to shutter 20 is in opposite direction.
Shutter 20 is removed from the exit passageway 22 of fuel gas, thus allow gas from exit passageway 22 enter and to
Up to burner.
The translation of bar 21 contacts ferromagnetic element 32 and the surface of electromagnet 4.
When ferromagnetic element 32 and electromagnet 4 contact and the electromagnet 4 by exposed to flame thermocouple (or flame pass
Sensor) power supply when, be intuitively that the magnetic force that is present between the ferromagnetic element 32 of bar 21 and the electromagnet 4 is more than pressure
The elastic force that contracting helical spring 200 produces.
Shutdown command is obtained by the disappearance of thermocouple generation electric current.
Alternatively, the variation of Fig. 5 can only provide vernier 210, bottom 102 be eliminated, on condition that the vernier 210 is by magnetic material
Material is made, so as to be controlled by solenoid 33.
In brief, electric actuator 1 according to the present invention includes at least pressure/pulling force, it, which is realized, often closes condition, blocks fuel
Gas leads to burner.
According to construction variation, the pressure/pulling force can advantageously elasticity or magnetic properties.
When pressure/pulling force is elastic property, electric actuator 1 includes at least one elastic device, such as compresses spring, and
In the case of pressure/pulling force, the electric actuator includes at least one ferromagnetic element and at least one permanent magnet, they suitably pacify
Dress and mutual cooperation.
In general, the pressure/pulling force is easy to the order power applied to open the exit passageway 22 and in iron
The anchor force between magnetic cell 32 and electromagnet 4 exceedes.
On the opening and closing order of electric actuator 1 according to the present invention, it can advantageously manual or electric control.
In the case of manual unlocking and closing, by appropriate control device, user translates valve rod 21, makes ferromagnetic element
32 contact with electromagnet 32, and in the case of closing, user decouples the element.
Automatically controlled opening and closing are the phases between vernier and electromagnet (advantageously solenoid 33) by magnetic-field-sensitive
Interaction and occur.
If the vernier includes permanent magnet, opening and closing order can be applied by the solenoid 33, particularly logical
Cross the reversion of its magnetic pole.
In the case where the vernier includes ferromagnetic element, the opening of electric actuator 1 is occurred by solenoid 33, the helical
Pipe 33 promotes the vernier towards bottom 102, and shutdown command can be obtained by the disappearance of thermocouple generation electric current
.
This can be obtained by least two modes：
- switched by single often close on thermocouple circuit, user opens it to cut off electric current, on condition that cooking stove is equipped with
There is suitable certification electronic equipment.
- close, shift on it essentially all of in coil by the bypass circuit of normally opened magnet spool, user
In the electric current that passes through, hence it is evident that reduce its magnetic field.
Nothing can prevent also to be applied to these shutdown modes in the variation that cursor is permanent magnet.
Fig. 6 shows the electric actuator 1 according to the present invention with interference film 230, which is placed on fuel gas
Pipeline 23 in close to bar 21, to prevent the fuel gas from flowing into same electric actuator.
Advantageously, the interference film 230 is applicable to all above-mentioned execution variations.
Fig. 7 compares two profiles of the electric actuator according to the present invention under opening condition and closedown condition.
In figure, for the ease of reading and understanding, the reference numeral of various assemblies, and advantageously Fig. 7 tables are not provided
The term and concept reached extends to all embodiments for showing and describing before.
Then, the reference numeral on Fig. 1,2,3,4,5 and 6, is provided below the term explanation of Fig. 7, wherein：
- D is the outside diameter (or being its full-size if not rounded column type part) of valve body；
- X is the reference (such as center of gravity) relative to the element 30,210 of the reference (such as bottom 101) of same valve body one
Instantaneous position, it (corresponds to the outlet in minimum value Xmin (being closed corresponding to the exit passageway 22) and maximum Xmax
Passage 22 is opened) between change.
- C is the maximum stroke of translation member 20,21,30,32,210, constrained between them, and C=Xmax-
Xmin；
-FFIt is the mutual attractive force between element 30 and bottom 101, is changed according to instantaneous position X, and therefore work as X=
F during XminF=FF_MAX, the F as X=XmaxF=FF_min, wherein significantly FF_MAXIt is greatest attraction forces, and FF_minIt is minimum suction
Gravitation；
- order power FSIt is that the power that solenoid 33 produces is made a concerted effort along " x " direction on element 30, that is to say, that the life
Make power FSIt it is making a concerted effort for the power for the generation of solenoid 33 for acting on vernier 30, its direction and intensity depend on flowing through solenoid coil
Electric current signal and intensity；
- anchor force FPIt is the mutual attractive force between element 32 and electromagnet 4, it is produced lives in flame ignition and thermocouple
When dynamic；Changed according to instantaneous position X.
The power FFIt is pressure/pulling force, it operates the safety shutdown of the electric actuator 1, and is easy to by order to open
The order power F for stating exit passageway 22 and applyingSExceed with the anchor force FP.In addition anchor force FPIt is as follows：
-FP=0, flame shut-off at this time (electromagnet 4 is not powered)；
-FP≠ 0, flame opens (electromagnet 4 is powered) at this time, and the F as X=XMAXP=FP_MAX, the F as X=XminP
=FP_min, wherein significantly FP_MAXIt is maximum anchor force, and FP_minIt is minimum anchor force.
In one preferred embodiment, electric actuator according to the present invention, it is characterised in that following all conditions are same
When there is (module that must take into consideration power)：
-D≤20[mm]；
-0,08D<C<0,4D；
-FP_MAX>FF_min；
-FF_MAX>FP_min；
-FS_MAX(+)>FF_MAX；
-(FS_MAX(-)+FF_min)>FP_MAX。
Especially, once geometry is fixed, equal to FSElectric current intensity and direction can be considered approximate constant
(when position X changes), and it is equal to F when in positive direction of the force action on element 30 in x-axisS_MAX(+)(outlet is logical
The opening order in road 22), when negative direction of the force action in x-axis, it is equal to FS_MAX(-)(the closing life of exit passageway 22
Make).
In addition the signal for the electric current powered for solenoid 33, F are corresponded toSIt can use on the occasion of FS_MAX(+)With negative value FS_MAX(-)。
Fig. 8 shows the parameter of electric actuator according to the present invention and the summary sheet of possible operative configuration.
This is represented：
- state：Show the state of electric actuator 1 and fuel gas device：
- " static "：Electric actuator 1 is turned off in a normal off position and burner；
- " transition "：Electric actuator is to be switched to open position from closed position, or vice versa it is as the same, if order open if
Burner can be opened, and burner can turn off if ordering and turning off；
- " opening "：Electric actuator 1 is opened in open position and burner；
- " shut-off "：Electric actuator 1 is turned off in normal off position and burner.
- flame：Show that the presence of the flame for fuel gas device (is opened as there are flame；Close as there is no fire
Flame).
- solenoid：Show to supply electric energy to solenoid, open (+) and supplied for the positive electric energy of solenoid 33, it is helical to close (-)
The negative electricity of pipe 33 can be supplied.
Preferably, the opening that (+) provides electric actuator 1 is opened in order, and is ordered and closed the closing that (-) provides electric actuator 1.
State is construed to a variety of operating conditions of the burner controlled by electric actuator 1 by the present invention, wherein：
- " conventional to open " shows the opening of the burner and the opening of electric actuator 1；
- " automatically shutting down " shows the shut-off of the burner and the closing of the electric actuator 1；
- " unexpected shut-off " shows the shut-off of the burner and the closing of the electric actuator 1；
- " attempting to open " shows the opening trial and the closing of the electric actuator 1 of the burner failure.
In brief, the effective force of electric actuator 1 can be summarized as follows：
- valve is closed：Only FFIn the presence of it, which is performed, often closes；
- valve is opened：FFAnd FPExist, wherein FP>FF, FPValve is kept to open；
-FF、FPAnd FSIt is present in transition.
It is apparent that the combination of the various modes of above-mentioned variation can cause the further variation without departing from the scope of the present invention,
And many embodiments and application are possible.
Electric actuator according to the present invention, for example, the supply for the premix burner for cooking stove is highly useful, no
Pipe be air type or blowing type, as file AN2014A000130, AN2014A000176, AN2015A000041,
AN2015A00042, AN2015A000060, AN2015A000061 and 102015000018411 it is described those.
For " premix burner ", it means such burner, and the quantity delivered of wherein primary air is enough to fire completely
Burn, without the feeding secondary air on flame.
For " blown burners ", it means such burner, wherein wait participate in burning primary air be not by
What Venturi effect attracted, but same burner is sent into the quantity accurately controlled by fan.Therefore, in such burning
In device, primary air is entered by calivarator-orifice, and in many cases, suitably, once air supply/interception, it is same
When be admitted to or intercept.
Fig. 9 a and 9b show two examples of the gas trap 25 suitable for blown burners, wherein can use according to the present invention
Electric actuator (not shown in detail).
Bar is shown with 21 two width, wherein the one or more shutters 20 of constraint, it is blocked from respective distribution duct
23 and 24 combustion gas and air duct towards exit passageway 22 to burner.
Especially, Fig. 9 a show two valves 25, in each of which, corresponding single shutter 20 intercept two concentric airs and
Combustion gas aperture, and in figure 9b, bar 21 carries two shutters 20, and one is used to intercept combustion gas, another is used to intercept air.
Claims (18)
- A kind of 1. electric actuator for gas stove etc.（1）, by actuation means guide, including：At least one safety electromagnetic iron （4）, it forms a part for guide's stabilizer；The stopper of at least one fuel gas（2）, it is generally to have outlet Passage（22）With the pipeline of fuel gas（23）Casing, at least one safety shutter（20）, wherein push/pull power (FF) act on it On, make the exit passageway（22）Safety shutdown；At least one service shutter（20）；With cavity（100）Supporting structure （10）, wherein bar（21）Slide and place in cavity, with the safety electromagnetic iron（4）At least one ferromagnetic element coordinated（32） With the stopper with fuel gas（2）The shutter coordinated（20）It is constrained, wherein the safety shutter（20）And institute State service shutter（20）Overlap in identical shutter（20）；When the safety electromagnetic iron（4）Especially through the flame of guide's stabilizer When sensor is powered, the ferromagnetic element（32）Pass through the anchor force (F to attract each other of appearanceP) anchor to the safety electromagnetic Iron（4）,It is characterized in that：- pressure/pulling force (the FF) it is magnetic properties, it is easy to by for the exit passageway（22）The order power opened and applied (FS) and the anchor force (FP) exceed.
- 2. the electric actuator according to preceding claims（1）, wherein the magnetic force is by being placed on the bar（21）On Vernier（30）With being placed on the cavity（100）In bottom（101）Magnetic force coordinate provide.
- 3. the electric actuator according to preceding claims（1）, wherein the vernier（30）Instantaneous position (X) relative to The bottom（101）Corresponding to the exit passageway（22）The minimum value (Xmin) of closing and corresponding to the exit passageway （22）Change between the maximum (Xmax) of opening, it is characterised in that：- in the vernier（30）With the bottom（101）Between mutual attractive force (FF) changed according to instantaneous position (X), and Therefore when instantaneous position is minimum value (X=Xmin), the power is maximum (FF=FF_MAX)；And when instantaneous position is maximum This power is minimum value (F when (X=Xmax)F=FF_min)；- in ferromagnetic element（32）And electromagnet（4）Between anchor force (FP) changed according to instantaneous position (X), and therefore work as wink When position be maximum (X=XMAX) when the power be maximum (FP=FP_MAX), and when instantaneous position is minimum value (X=Xmin) The power is minimum value (FP=FP_min)；And it is characterized in that：- maximum anchor force (the FP=FP_MAX) be more than in the vernier（30）With the bottom（101）Between minimum mutually inhale Gravitation (FF=FF_min)；- in the vernier（30）With the bottom（101）Between the maximum mutual attractive force (FF=FF_max) be more than it is described most Small anchor force (FP=FP_min)。
- 4. electric actuator according to claim 2（1）, wherein the bottom（101）Including ferromagnetic element and the trip Mark（30）Including permanent magnet.
- 5. electric actuator according to claim 2（1）, wherein the bottom（101）Including permanent magnet and the vernier （30）Including ferromagnetic element.
- 6. electric actuator according to claim 2（1）, wherein the bottom（101）Including permanent magnet and the vernier （30）Including permanent magnet.
- 7. the electric actuator according to preceding claims（1）, wherein being exit passageway（22）Opening, be burner Open, manually or automatically act, bar（21）Ferromagnetic element（32）With safety electromagnetic iron（4）Contact and at least keep one Body, until activating the safety electromagnetic iron after burner is opened（4）.
- 8. the electric actuator according to preceding claims（1）, wherein being exit passageway（22）Opening or be automatically closed, i.e., Automatically opening up and turning off for burner, by the actuation means, user couples and decouples manually the bar（21）It is described Ferromagnetic element（32）With the electromagnet（4）.
- 9. the electric actuator according to preceding claims（1）, further comprise at least one spiral piping arrangement（33）, it is logical Cross appropriate magnetic field and the vernier（30）Coordinate, so that by solenoid（33）Electric energy is supplied, realizes exit passageway（22） Opening or be automatically closed, i.e. burner automatically opening up or turns off.
- 10. electric actuator according to claim 9（1）, wherein the order power (Fs) is to act on vernier（30）Spiral shell Spool（33）The power of generation is made a concerted effort, its direction and intensity depend on flowing through solenoid（33）The signal of the electric current of coil and strong Degree；The order power (Fs) is characterized in that：- in order to order the exit passageway（22）Open, the order power (FS=FS_MAX(+)) it is more than the maximum mutual attractive force (FF=FF_MAX)；- in order to order the exit passageway（22）Close, order power (FS=FS_MAX(-)) and minimum mutual attractive force (FF=FF_min) Summation be more than maximum anchor force (FP=FP_MAX)。
- 11. electric actuator according to claim 10（1）, wherein being exit passageway（22）Opening, be burner Open, by the actuation means, user is activated to the solenoid（33）Electric energy supply, solenoid remains powered on, until The safety electromagnetic iron is activated after the opening of burner（4）.
- 12. electric actuator according to claim 9（1）, wherein the vernier（30）It is permanent magnet, and is exit passageway （22）Be automatically closed, as automatically shut down, by the actuation means, user is activated to the solenoid（33）Electric energy supply Should, relative to for exit passageway（22）Opening, be burner the solenoid that is provided of opening（33）Polarity, overturn institute State solenoid（33）Polarity.
- 13. the electric actuator according to any one of claim 9 to 12（1）, wherein can be to the solenoid（33）Supply Square wave with duty cycle.
- 14. electric actuator according to claim 8 or claim 9（1）, wherein the vernier（30）It is ferromagnetic element, passes through actuating Device, user are cut off to safety electromagnetic iron（4）Electric energy supply, exit passageway is automatically closed（22）, that is, automatically shut down.
- 15. electric actuator according to claim 14（1）, wherein described cut off to electromagnet（4）Electric energy supply be logical Cross closing electromagnet（4）Bypass circuit and occur.
- 16. electric actuator according to claim 14（1）, wherein described cut off to electromagnet（4）Electric energy supply hair Life is by safety electromagnetic iron（4）Circuit on it is normal close microswitch, user opens it to cut off electric current.
- 17. the electric actuator according to claim 1 to 16（1）, it is characterised in that it further comprises disturbing film（230）, It is positioned over the solenoid of fuel gas（33）The interior bar（21）Near.
- A kind of 18. electric actuator described in usage right requirement 1 to 17（1）The cooking stove with blown burners.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102015000037606 | 2015-07-23 | ||
| ITUB2015A002426A ITUB20152426A1 (en) | 2015-07-23 | 2015-07-23 | ELECTRO-PILOSTATIC VALVE FOR GAS BURNERS |
| PCT/IB2016/001043 WO2017013487A1 (en) | 2015-07-23 | 2016-07-21 | Electro-pilotstatic valve for gas burners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107949748A true CN107949748A (en) | 2018-04-20 |
Family
ID=54542340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680044168.XA Withdrawn CN107949748A (en) | 2015-07-23 | 2016-07-21 | Electric guide's static valve for gas burner |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180266684A1 (en) |
| EP (1) | EP3325881B1 (en) |
| CN (1) | CN107949748A (en) |
| BR (1) | BR112018001029B1 (en) |
| IT (1) | ITUB20152426A1 (en) |
| WO (1) | WO2017013487A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091817A (en) * | 1993-02-26 | 1994-09-07 | 林内株式会社 | Combustion control device |
| EP0875720A2 (en) * | 1997-04-30 | 1998-11-04 | OP Controls S.r.l. | Safety and regulation valve unit for a gas installation, particularly a heating installation |
| EP1434965A1 (en) * | 2001-10-10 | 2004-07-07 | Sit la Precisa S.p.a. | A valve unit for controlling the delivery of a fuel gas |
| CN201014486Y (en) * | 2007-01-31 | 2008-01-30 | 深圳万呵科技有限公司 | Gas burner |
| US20090206291A1 (en) * | 2008-02-20 | 2009-08-20 | Grand Mate Co. Ltd. | Gas flow rate control valve |
| EP2581665A2 (en) * | 2010-06-10 | 2013-04-17 | EN Innovation Co., Ltd. | Gas safety device |
| US20160025380A1 (en) * | 2014-07-28 | 2016-01-28 | Clearsign Combustion Corporation | Water heater with a variable-output burner including a perforated flame holder and method of operation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2290047A (en) * | 1938-11-10 | 1942-07-14 | Milwaukee Gas Specialty Co | Safety device for heating and other apparatus |
| US2290048A (en) * | 1938-12-12 | 1942-07-14 | Milwaukee Gas Specialty Co | Safety device for heating and other apparatus |
| US2637390A (en) * | 1951-12-10 | 1953-05-05 | Tappan Stove Co | Automatic ignition and control mechanism for oven burners |
| US2637391A (en) * | 1952-02-01 | 1953-05-05 | Tappan Stove Co | Automatic ignition and control mechanism for oven burners |
| US2637392A (en) * | 1952-05-05 | 1953-05-05 | Tappan Stove Co | Oven burner control mechanism |
| US2637393A (en) * | 1952-06-13 | 1953-05-05 | Tappan Stove Co | Automatic ignition and control mechanism for gaseous fuel burners |
-
2015
- 2015-07-23 IT ITUB2015A002426A patent/ITUB20152426A1/en unknown
-
2016
- 2016-07-21 US US15/745,928 patent/US20180266684A1/en not_active Abandoned
- 2016-07-21 BR BR112018001029-4A patent/BR112018001029B1/en active IP Right Grant
- 2016-07-21 CN CN201680044168.XA patent/CN107949748A/en not_active Withdrawn
- 2016-07-21 EP EP16757057.1A patent/EP3325881B1/en active Active
- 2016-07-21 WO PCT/IB2016/001043 patent/WO2017013487A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091817A (en) * | 1993-02-26 | 1994-09-07 | 林内株式会社 | Combustion control device |
| EP0875720A2 (en) * | 1997-04-30 | 1998-11-04 | OP Controls S.r.l. | Safety and regulation valve unit for a gas installation, particularly a heating installation |
| EP1434965A1 (en) * | 2001-10-10 | 2004-07-07 | Sit la Precisa S.p.a. | A valve unit for controlling the delivery of a fuel gas |
| CN201014486Y (en) * | 2007-01-31 | 2008-01-30 | 深圳万呵科技有限公司 | Gas burner |
| US20090206291A1 (en) * | 2008-02-20 | 2009-08-20 | Grand Mate Co. Ltd. | Gas flow rate control valve |
| EP2581665A2 (en) * | 2010-06-10 | 2013-04-17 | EN Innovation Co., Ltd. | Gas safety device |
| US20160025380A1 (en) * | 2014-07-28 | 2016-01-28 | Clearsign Combustion Corporation | Water heater with a variable-output burner including a perforated flame holder and method of operation |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180266684A1 (en) | 2018-09-20 |
| EP3325881B1 (en) | 2021-06-02 |
| BR112018001029A2 (en) | 2018-09-18 |
| EP3325881A1 (en) | 2018-05-30 |
| WO2017013487A1 (en) | 2017-01-26 |
| BR112018001029B1 (en) | 2022-07-12 |
| ITUB20152426A1 (en) | 2017-01-23 |
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