EP0669499A1 - Device for regulating and controlling the flow of gas to burners of domestic boilers - Google Patents
Device for regulating and controlling the flow of gas to burners of domestic boilers Download PDFInfo
- Publication number
- EP0669499A1 EP0669499A1 EP94202584A EP94202584A EP0669499A1 EP 0669499 A1 EP0669499 A1 EP 0669499A1 EP 94202584 A EP94202584 A EP 94202584A EP 94202584 A EP94202584 A EP 94202584A EP 0669499 A1 EP0669499 A1 EP 0669499A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve seat
- obturator
- gas
- valve
- gas passage
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- 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
-
- 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
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
- F23N2235/20—Membrane valves
-
- 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
- F23N2235/24—Valve details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/10—High or low fire
-
- 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
Definitions
- the present invention relates to a device for controlling and regulating the flow of gas to domestic gas-operated apparatus such as stoves, boilers, water heaters and the like.
- the principal aim of the present invention is to produce a device of the above-mentioned type having structural and functional features such that it can provide the dual possibility of acting on the flow of gas to the burners of domestic boilers and, more particularly, such that it can make available the further function of modulating the gas flow rate between two levels, MIN and MAX, in addition to the well-known ON-OFF function for intercepting all the valves actually in use.
- a further object is to provide a device of this type with particularly compact dimensions so as to render it manageable, such that it can be rapidly installed in positions which are always accessible to the user, evidently without decreasing its efficiency and reliability.
- a device for controlling and regulating the flow of gas to burners of domestic gas-operated apparatus which comprises a valve body, a gas passage which passes through the valve body from an inlet aperture to an outlet aperture, at least one interception valve in the passage and controlled by a respective electromagnet, characterized in that it comprises in the gas passage and downstream of the at least one interception valve:
- a device according to the invention for regulating and controlling the flow of gas to gas burners of domestic gas-operated apparatus is generally designated 1.
- This device 1 comprises a valve body 2 through which passes a passage 3, having a particularly sinuous profile and consisting of a plurality of successive portions of different sections, the passage forming a gas path extending through the body 1 from a gas inlet aperture 4 to an outlet aperture 5.
- This gas path 3 contains an interception valve of the type commonly known as an ON-OFF valve, comprising a valve seat 7 and a plate-type obturator 8, provided with a rod 9 which is mechanically interlocked, by means of a lever 10, to the rotor 11 (or armature) of a control electromagnet 12.
- an interception valve of the type commonly known as an ON-OFF valve, comprising a valve seat 7 and a plate-type obturator 8, provided with a rod 9 which is mechanically interlocked, by means of a lever 10, to the rotor 11 (or armature) of a control electromagnet 12.
- a spring 13 constantly stresses the plate-type obturator 8 towards the respective valve seat 7.
- control valve 14 Downstream of the interception valve 7-8, in the above-mentioned gas passage 3, is a control valve generally designated 14 and shown in greater detail in Figure 2.
- control valve 14 comprises a valve seat 15 which divides the gas passage 3 into two successive chambers 3a, 3b.
- a first sump 16 coaxial to the valve seat 15, and a second sump 17 lateral and parallel to the sump 16.
- the two sumps 16, 17 communicate with one another through a passage 18 cooperating with a screw 19 for regulating the gas flow and accessible from the exterior of the valve body 1.
- valve seat 15 cooperates with an obturator 20 which comprises a head 21, for detachably engaging the valve seat 15, and a bellows pipe 22, extending coaxially to the valve seat 15.
- obturator 20 which comprises a head 21, for detachably engaging the valve seat 15, and a bellows pipe 22, extending coaxially to the valve seat 15.
- a through-hole Passing axially through the head 21 is a through-hole, consisting of two coaxial successive portions, a first portion 23a of smaller diameter and a second portion 23b of larger diameter, defining therebetween an annular shoulder 24, inside the head 21 of the obturator 20.
- This shoulder 24 forms a valve seat for a plate-type obturator 25, coaxially supported and guided in the head 21.
- the bellows pipe 22 has one end portion which is fitted, in a manner such that it is tight with respect to compressed gas, on the head 21 and is secured at the other end, still in a manner such that it is tight with respect to pressurized fluid, on the base 3c of the chamber 3a, the assembly being disposed around the mouth of the sump 16.
- the bellows pipe 22 thus communicates with the gas passage 3 upstream of the valve seat 15 and with the through-hole 23a-23b of the head 21.
- a rod 28, extending axially through the valve seat 24, has one end secured to the plate-type obturator 25 for supporting and actuating the latter and the other end mechanically interlocked by a lever 29 to the movements of the rotor 30 of an electromagnet 31.
- Two or more stops 32 for engaging the body of the obturator 20 are secured on the rod 28 and at a predetermined distance from the plate-type obturator 25, in order to urge the obturator 20 to open relative to the valve seat 15. It should, however, be mentioned that this movement is delayed relative to the movement of the plate-type obturator 25 with respect to the valve seat 24 and a delay of this type is directly proportional to the distance between the stops 32 and the plate-type obturator 25.
- a pressure regulator acting in a gas passage 3 in an intermediate position between the ON-OFF valve 7-8 and the control valve 14 is schematically indicated 33.
- the gas arriving in the chamber 3a of the gas passage 3 can flow through the sumps 16, 17 and the respective passage 18, inside the bellows 22 and from there, through the valve seat 24, to the burner (not shown) which is thus supplied with the MINIMUM FLOW RATE.
- This flow rate is calibrated by acting on the regulating screw 19.
- the gas can then flow to the burner at MAXIMUM FLOW RATE.
- the obturator 20 can be gradually opened, thus bringing about a corresponding modulation of the gas flow rate.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
- The present invention relates to a device for controlling and regulating the flow of gas to domestic gas-operated apparatus such as stoves, boilers, water heaters and the like.
- The principal aim of the present invention is to produce a device of the above-mentioned type having structural and functional features such that it can provide the dual possibility of acting on the flow of gas to the burners of domestic boilers and, more particularly, such that it can make available the further function of modulating the gas flow rate between two levels, MIN and MAX, in addition to the well-known ON-OFF function for intercepting all the valves actually in use.
- A further object is to provide a device of this type with particularly compact dimensions so as to render it manageable, such that it can be rapidly installed in positions which are always accessible to the user, evidently without decreasing its efficiency and reliability.
- These and other objects which will become clearer from the following description are found in a device for controlling and regulating the flow of gas to burners of domestic gas-operated apparatus, which comprises a valve body, a gas passage which passes through the valve body from an inlet aperture to an outlet aperture, at least one interception valve in the passage and controlled by a respective electromagnet, characterized in that it comprises in the gas passage and downstream of the at least one interception valve:
- - a first valve seat;
- - an obturator cooperating with the first valve seat;
- - an axial through-hole extending through the obturator;
- - a second valve seat defined in the through-hole;
- - a plate-type obturator movably guided in the through-hole so as to cooperate with the second valve seat;
- - a rod for actuating the plate-type obturator, mechanically interlocked to the rotor of an electromagnet; and
- - thrust means integral with the rod and acting on the obturator of the first valve seat in order to urge it open at a predetermined delay relative to the movement of the plate-type obturator opening the second valve seat.
- The characteristics and advantages of a regulating device according to the invention will become clearer from the following description of an embodiment thereof with reference to the appended drawings, which are given solely by way of non-limiting example and in which:
- - Figure 1 shows schematically and in section a regulating device according to the invention; and
- - Figure 2 shows, on an enlarged scale, a detail of the regulating device of Figure 1.
- With reference to the above Figures, a device according to the invention for regulating and controlling the flow of gas to gas burners of domestic gas-operated apparatus is generally designated 1.
- This device 1 comprises a
valve body 2 through which passes apassage 3, having a particularly sinuous profile and consisting of a plurality of successive portions of different sections, the passage forming a gas path extending through the body 1 from a gas inlet aperture 4 to an outlet aperture 5. - This
gas path 3 contains an interception valve of the type commonly known as an ON-OFF valve, comprising a valve seat 7 and a plate-type obturator 8, provided with a rod 9 which is mechanically interlocked, by means of alever 10, to the rotor 11 (or armature) of acontrol electromagnet 12. - A
spring 13 constantly stresses the plate-type obturator 8 towards the respective valve seat 7. - Downstream of the interception valve 7-8, in the above-mentioned
gas passage 3, is a control valve generally designated 14 and shown in greater detail in Figure 2. - With reference to this Figure 2, the
control valve 14 comprises avalve seat 15 which divides thegas passage 3 into twosuccessive chambers base 3c of thechamber 3a is provided or formed in some other way afirst sump 16, coaxial to thevalve seat 15, and asecond sump 17 lateral and parallel to thesump 16. - The two
sumps passage 18 cooperating with ascrew 19 for regulating the gas flow and accessible from the exterior of the valve body 1. - The
valve seat 15 cooperates with anobturator 20 which comprises ahead 21, for detachably engaging thevalve seat 15, and abellows pipe 22, extending coaxially to thevalve seat 15. - Passing axially through the
head 21 is a through-hole, consisting of two coaxial successive portions, afirst portion 23a of smaller diameter and a second portion 23b of larger diameter, defining therebetween anannular shoulder 24, inside thehead 21 of theobturator 20. - This
shoulder 24 forms a valve seat for a plate-type obturator 25, coaxially supported and guided in thehead 21. - The
bellows pipe 22 has one end portion which is fitted, in a manner such that it is tight with respect to compressed gas, on thehead 21 and is secured at the other end, still in a manner such that it is tight with respect to pressurized fluid, on thebase 3c of thechamber 3a, the assembly being disposed around the mouth of thesump 16. Thebellows pipe 22 thus communicates with thegas passage 3 upstream of thevalve seat 15 and with the through-hole 23a-23b of thehead 21. - Two springs which stress the
head 21 of theobturator 20 and the plate-type obturator 25 respectively such that they close thecorresponding valve seats - A
rod 28, extending axially through thevalve seat 24, has one end secured to the plate-type obturator 25 for supporting and actuating the latter and the other end mechanically interlocked by alever 29 to the movements of therotor 30 of anelectromagnet 31. - Two or
more stops 32 for engaging the body of theobturator 20 are secured on therod 28 and at a predetermined distance from the plate-type obturator 25, in order to urge theobturator 20 to open relative to thevalve seat 15. It should, however, be mentioned that this movement is delayed relative to the movement of the plate-type obturator 25 with respect to thevalve seat 24 and a delay of this type is directly proportional to the distance between thestops 32 and the plate-type obturator 25. - In Figure 1, a pressure regulator acting in a
gas passage 3 in an intermediate position between the ON-OFF valve 7-8 and thecontrol valve 14 is schematically indicated 33. - The operation of the device of this invention will be described solely with reference to the regulating or
control valve 14 since the operation of the ON-OFF valve 7-8 is known and conventional. - By supplying the
electromagnet 31 with minimum current, a minimum angular movement of thelever 29 is brought about which is translated into a corresponding minimum axial movement of therod 28. - This movement is sufficient to determine the opening of the plate-
type obturator 25 against thespring 27. However, it is not sufficient to push theobturator 20 against thestops 32. - The gas arriving in the
chamber 3a of thegas passage 3 can flow through thesumps respective passage 18, inside thebellows 22 and from there, through thevalve seat 24, to the burner (not shown) which is thus supplied with the MINIMUM FLOW RATE. - This flow rate is calibrated by acting on the regulating
screw 19. - By supplying maximum current to the
electromagnet 31, a maximum angular movement of thelever 29, a maximum axial movement of therod 28 and, owing to the engagement of thestops 32 of the rod with theobturator 20, a maximum movement of the latter is brought about such that therespective valve seat 15 opens. - The gas can then flow to the burner at MAXIMUM FLOW RATE.
- By providing current proportionally to the
electromagnet 31, theobturator 20 can be gradually opened, thus bringing about a corresponding modulation of the gas flow rate.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT94MI000116U IT232766Y1 (en) | 1994-02-22 | 1994-02-22 | DEVICE FOR THE REGULATION AND CONTROL OF THE FLOW OF GAS TO BURNERS OF DOMESTIC USE |
ITMI940116 | 1994-02-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0669499A1 true EP0669499A1 (en) | 1995-08-30 |
EP0669499B1 EP0669499B1 (en) | 1998-11-04 |
Family
ID=11367631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94202584A Expired - Lifetime EP0669499B1 (en) | 1994-02-22 | 1994-09-08 | Device for regulating and controlling the flow of gas to burners of domestic boilers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0669499B1 (en) |
DE (1) | DE69414366T2 (en) |
IT (1) | IT232766Y1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1026446A1 (en) * | 1999-02-03 | 2000-08-09 | IABER S.p.A. | Air gas regulating system |
WO2004088206A1 (en) * | 2003-04-02 | 2004-10-14 | Sit La Precisa S.P.A. | A valve unit for controlling the delivery of a combustible gas |
EP1278011A3 (en) * | 2001-07-19 | 2005-01-19 | HeaTec Thermotechnik GmbH | Valve insert and valve for gas appliances |
US20100300553A1 (en) * | 2007-10-22 | 2010-12-02 | Bertelli & Partners S.R.L. | Multifunctional safety valve device with incorporated proportional pressure regulator |
WO2020065684A1 (en) * | 2018-09-25 | 2020-04-02 | Sit S.P.A. | Valve delivery apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10135115B4 (en) * | 2001-07-19 | 2004-08-26 | Heatec Thermotechnik Gmbh | gas train |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3279498A (en) * | 1965-06-16 | 1966-10-18 | Controls Co Of America | Dual fluid valve |
FR2426863A1 (en) * | 1978-05-23 | 1979-12-21 | Saunier Duval | Electrically-operated gas burner valve - has high-output plug regulating independent passage to burners in valve housing |
GB2210155A (en) * | 1987-12-15 | 1989-06-01 | Johnson Service Co | Valve assembly for burner control |
-
1994
- 1994-02-22 IT IT94MI000116U patent/IT232766Y1/en active IP Right Grant
- 1994-09-08 EP EP94202584A patent/EP0669499B1/en not_active Expired - Lifetime
- 1994-09-08 DE DE69414366T patent/DE69414366T2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3279498A (en) * | 1965-06-16 | 1966-10-18 | Controls Co Of America | Dual fluid valve |
FR2426863A1 (en) * | 1978-05-23 | 1979-12-21 | Saunier Duval | Electrically-operated gas burner valve - has high-output plug regulating independent passage to burners in valve housing |
GB2210155A (en) * | 1987-12-15 | 1989-06-01 | Johnson Service Co | Valve assembly for burner control |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1026446A1 (en) * | 1999-02-03 | 2000-08-09 | IABER S.p.A. | Air gas regulating system |
EP1278011A3 (en) * | 2001-07-19 | 2005-01-19 | HeaTec Thermotechnik GmbH | Valve insert and valve for gas appliances |
WO2004088206A1 (en) * | 2003-04-02 | 2004-10-14 | Sit La Precisa S.P.A. | A valve unit for controlling the delivery of a combustible gas |
US20100300553A1 (en) * | 2007-10-22 | 2010-12-02 | Bertelli & Partners S.R.L. | Multifunctional safety valve device with incorporated proportional pressure regulator |
US8550112B2 (en) * | 2007-10-22 | 2013-10-08 | Bertelli & Partners S.R.L. | Multifunctional safety valve device with incorporated proportional pressure regulator |
WO2020065684A1 (en) * | 2018-09-25 | 2020-04-02 | Sit S.P.A. | Valve delivery apparatus |
CN112888899A (en) * | 2018-09-25 | 2021-06-01 | 西特股份公司 | Valve conveying equipment |
US11898749B2 (en) | 2018-09-25 | 2024-02-13 | Sit S.P.A. | Valve delivery apparatus |
Also Published As
Publication number | Publication date |
---|---|
ITMI940116U1 (en) | 1995-08-22 |
IT232766Y1 (en) | 2000-01-19 |
DE69414366D1 (en) | 1998-12-10 |
EP0669499B1 (en) | 1998-11-04 |
ITMI940116V0 (en) | 1994-02-22 |
DE69414366T2 (en) | 1999-04-01 |
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