EP0540068A1 - Einrichtung für die automatische Einstellung der Anschläge einer Gasregelung bei Haushaltbrennern - Google Patents

Einrichtung für die automatische Einstellung der Anschläge einer Gasregelung bei Haushaltbrennern Download PDF

Info

Publication number: EP0540068A1
Authority: EP; European Patent Office
Prior art keywords: support plate; engagement member; stem; plate; engagement
Prior art date: 1991-09-20
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP92202666A

Other languages

English (en)

French (fr)

Inventor

Giuliano Spaggiari

Luciano Pignatti

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Attrezzatura Torneria Stampi Ats Sdf Di Spaggiara & Pignatti

Original Assignee

Attrezzatura Torneria Stampi Ats Sdf Di Spaggiara & Pignatti

Priority date (The priority date 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 date listed.)

1991-09-20

Filing date

1992-09-03

Publication date

1993-05-05

1992-09-03 Application filed by Attrezzatura Torneria Stampi Ats Sdf Di Spaggiara & Pignatti filed Critical Attrezzatura Torneria Stampi Ats Sdf Di Spaggiara & Pignatti

1993-05-05 Publication of EP0540068A1 publication Critical patent/EP0540068A1/de

Status Withdrawn legal-status Critical Current

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Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/007—Regulating fuel supply using mechanical means
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/20—Calibrating devices
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Definitions

This invention relates to a device for automatically setting the gas flow regulator taps of domestic gas cooker burners, in particular for taps comprising a gas inlet, a gas outlet, a valving member operated by a stem acting by rotation, and valving member setting means also acting by rotation.
the gas cooker is adjusted manually when in its completely or nearly completely assembled state.
the valving member is firstly put into a constant open position and the setting means are then screwed in or out to set the outlet gas flow by observing the height and characteristics of the flame produced by the gas.
the setting (or preliminary setting) can effected in the same manner on the taps before they are mounted, by passing inert gas (in particular air) through the taps and measuring the flow through the tap with suitable instruments.
inert gas in particular air
the object of the present invention is to provide an automatic tap setting device by which the taps can be set before they are mounted in the gas cooker, and which achieves more rapid and accurate setting without the use of labour.
Figure 1 is a schematic view of the device of the invention together with other auxiliary means for setting the tap.
Figure 2 is a axial section through part of the setting device 20 of Figure 1.
Figure 2A is an enlarged side view of a detail of Figure 2.
Figure 3A is an enlarged detail of an element of Figure 2 mounted about the end of the stem 6 of the tap 2.
Figure 3B is a section on the plane III-III of Figure 3A.
Figure 4 is a top plan view of Figure 2.
Figure 5 is a section on the plane V-V of Figure 4.
Figure 6 is a section on the plane VI-VI of Figure 4.
the tap to which the invention is applied (indicated by 2 in the figures) is illustrated schematically in Figure 1 and comprises a gas inlet 3, a gas outlet 4, a body 5 containing the valving member, a stem 6 projecting externally from the body 5 and arranged to operate the valving member by rotation, and setting means 7 for the valving member which also operate by rotation.
the inlet 3 is connected to a fuel gas source
the outlet 4 is connected to a respective burner
a knob is mounted on the stem 6 to manually rotate the stem 6 and hence adjust the exit gas flow between a maximum value and zero.
the purpose of the means 7 is to set the gas flow in the sense of defining the flow rate of the gas leaving 4 when the stem 6 has been positioned in its stable "minimum” position (ie a stable position in which the gas flow is just sufficient to generate a flame), this position usually being the end of the free opening rotation.
the present invention relates to a setting device (indicated overall by 20) able to independently rotate both the stem 6 and the setting means 7.
Said device 20 operates in combination with means 10 for feeding pressurized air (or other gas) into the inlet 3 and with means 11 connected to the inlet 3 to measure the flow rate of the air passing through the tap 2 (see Figure 1).
the device of the invention is suitable for operating in combination with transfer means (of any known type, not shown in the figures) for moving each tap, one or more at a time, into a predetermined position in front of the device 20 with the inlet 3 in a position corresponding with the means 10 and means 11.
the means 10 and 11 can be of any known type.
control and operating means of any known type are conveniently provided, for example incorporating a programmable electronic processor, which automatically coordinate and control the operation of the various members of the device of the invention.
This operation comprises for each tap 2 firstly rotating the stem 6 by the device 20 to bring the valving member of the tap 2 into a predetermined constant open position. This is achieved by rotating the stem 6 into said stable "minimum” position at the end of the free opening rotation.
the setting means 7 are then rotated by the device 20 until the flow rate of the air passing through the tap 2, as measured by the means 11, reaches a predetermined value.
the stem 6 of the valving member usually has an end portion with at least one flat lateral face 6a for rotatably fitting the respective knob.
the setting means 7 possess an end head 7a with a slot to be rotatably engaged by a screwdriver and accessible through an axial hole 61 provided in the end of the stem 6 (see specifically Figures 3A and 3B).
FIG. 2-6 show one embodiment of the setting device 20 for operating on stems 6 of the aforesaid type.
the embodiment shown in the figures is of the multiple type for operating on two stems 6 simultaneously.
the invention equally comprises embodiments for operating on a single stem 6 or on three or more stems 6 at a time.
the device 20 comprises two identical engagement members 21 each possessing at one end an axial cavity 23 able to exactly fit onto the end portion of the stem 6.
the cavity 23 has a cross-section which is partly circular and partly linear, this latter part being defined by the plate 231 which intersects the circular cross-section ( Figure 4).
the members 21 are supported rotatable about their axis by a respective first support plate 31 via an upwardly projecting pin 24 fixed to the plate 31, and on which a widened base 25 of the member 21 is mounted via a bearing.
the device 20 also comprises two second identical engagement members 41 each possessing an end 42 shaped to be able to enter the hole 61 in the stem 6 and rotatably engage the head 7a of the means 7.
the end 42 has the shape of a thin screwdriver.
the members 41 are each supported rotatable about their axis by a respective second support plate 32 and are arranged to each pass coaxially through a respective first member 21 and be able to slide and axially rotate relative thereto.
each member 41 is supported by a bearing 43 fixed to the respective plate 32, into which the base 44 of the member 41 is inserted.
the remaining part 45 of the member 41 is in the form of a thin circular rod which carries the end 42 and passes axially through the plate 31, through the pin 24 and through the entire member 21.
Said elements 31, 24 and 21 are provided with corresponding axial cavities for the passage of the rod 45.
the support plate 31 carries means 51 for rotating the first engagement members 21, and each plate 32 carries means 52 for independently rotating the second engagement members 41.
a fixed base 33 which supports both the plate 31 and the plates 32 in a manner mutually independently slidable in the direction of the axes of the engagement members 21 and 41.
the plates 31 and 32 and the base 33 are mutually parallel. To the plate 31 there are fixed four perpendicular columns 34 slidable within bushes 35 fixed to the plates 32 and within bushes 36 fixed to the fixed base 33.
a hydraulic cylinder-piston unit 37 is connected in a central position between the plate 31 and the base 33, and a respective cylinder-piston unit 38 is connected between the plate 31 and each plate 32.
the cylinder-piston unit 37 is arranged to translationally move the plate 31, and with it the plates 32, relative to the fixed base 33.
the cylinder-piston units 38 are arranged to translationally move the respective plates 32 relative to the plate 31.
the means 51 comprise a small electric motor 53 which simultaneously rotate the engagement members 21.
the motor 53 is fixed to the lower side of the plate 31 and carries on its shaft a pulley 54 with which via a belt 55 it transmits motion to two pulleys 56 each forming part of the base 25 of a respective member 21.
Other belt tensioning pulleys 511 are provided on the plate 31.
the means 52 comprise for each member 41 a small electric motor 57 fixed to the upper side of the plate 32 and carrying on its shaft a pulley 58 which via a belt 521 transmits motion to a pulley 59 keyed on the lower end of the member 41.
Each member 21 comprises a cylindrical element 22 which at its lower end carries said widened base 25 by which the member 21 is rotatably coupled to the pin 24.
an outer tubular cylindrical member 26 which projects axially upwards from the element 22 and comprises at its upper end said axial cavity 23 for engaging the stem 6.
the element 26 comprises an axial slot 261 through which there extends a small stop member 27 which is fixed to the element 22, and is of width equal to that of the slot 261 but of smaller height. By means of this restraint, the element 26 can slide axially through a limited distance relative to the element 22, but is rotatably rigid with the element 22.
a helical spring 29 is inserted between the upper end of the element 22 and the upper end of the cavity 28 to constantly urge the cylindrical element 26 upwards.
the elements 22 and 26 comprise suitable axial cavities for passage of the upper part of the member 41.
the plates 32 are held initially in a position withdrawn from the plate 31 (the cylinder-piston units 38 are in their extended state), while the plate 31 is held close to the fixed base 33 (the cylinder-piston unit 37 is in its retracted state).
the taps 2 advance, conveyed by suitable transfer means, and halt cyclically in pairs at the device of the invention, with their stems 6 coaxial to the engagement members 21 and at a short distance from the ends of these.
the cylinder-piston unit 37 is then operated to withdraw the plate 31 from the base 33 and hence move the plate 31 towards the taps 2.
the engagement members 21 are rotated by the motor 53 through a predetermined angle.
the members 21 approach the stems 6, the ends of which enter and mate with the cavities 23, to hence rotate through the angle through which the members 21 are rotated.
the cylinder-piston units are then operated to move the plates 32 towards the plate 31 and hence move the members 41 towards the taps 2.
the ends 42 of the members 41 penetrate through the axial holes 61 until they engage the heads 7a.
the lower end of the rod 45 is engaged with the base 44 in such a manner as to be able to slide axially a little relative thereto, while a precompressed spring 46 urges the rod 45 outwards.
the rod 45 rotates rigidly with the base 44.
each motor 57 rotates the respective member 41, to hence rotate the means 7 in one direction or another and hence set the flow rate of the air passing through the tap 2. This rotation is controlled on the basis of the value measured by the means 11 so as to finally obtain a predetermined air exit flow rate. If for example the means 11 indicate a flow rate less than the scheduled value, the motor 57 rotates the member 41 and hence the head 7a in the necessary direction to increase the flow rate, this rotation being halted as soon as the means 11 indicate that the predetermined flow rate has been achieved.
the entire described operation can be coordinated and controlled by the aforesaid control and operating means so as to render it completely automatic.

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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)

EP92202666A 1991-09-20 1992-09-03 Einrichtung für die automatische Einstellung der Anschläge einer Gasregelung bei Haushaltbrennern Withdrawn EP0540068A1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
ITRE910061A IT1253075B (it)	1991-09-20	1991-09-20	Dispositivo per tarare automaticamente i rubinetti di regolazione della portata del gas per bruciatori di cucine a gas ad uso domestico
ITRE910061		1991-09-20

Publications (1)

Publication Number	Publication Date
EP0540068A1 true EP0540068A1 (de)	1993-05-05

Family

ID=11398059

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP92202666A Withdrawn EP0540068A1 (de)	1991-09-20	1992-09-03	Einrichtung für die automatische Einstellung der Anschläge einer Gasregelung bei Haushaltbrennern

Country Status (2)

Country	Link
EP (1)	EP0540068A1 (de)
IT (1)	IT1253075B (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3002015A1 (de) *	1979-01-24	1980-07-31	Toyota Motor Co Ltd	Verfahren und einrichtung zum einstellen des ventilspiels und zum pruefen der ventilsteuerung bei brennkraftmaschinen
EP0044013A1 (de) *	1980-07-11	1982-01-20	COMPAGNIE EUROPEENNE POUR L'EQUIPEMENT MENAGER "CEPEM" Société anonyme dite:	Regelvorrichtung für einen Gasbrenner
FR2624586A1 (fr) *	1987-12-11	1989-06-16	Vaillant Sarl	Valve de preference pour la regulation de la pression de gaz d'appareils marchant au gaz
EP0407302A1 (de) *	1989-07-06	1991-01-09	Renault Automation	Verfahren zum Einstellen des Ventilspiels bei Brennkraftmaschinen und Einrichtung zur Durchführung dieses Verfahrens

1991
- 1991-09-20 IT ITRE910061A patent/IT1253075B/it active IP Right Grant
1992
- 1992-09-03 EP EP92202666A patent/EP0540068A1/de not_active Withdrawn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3002015A1 (de) *	1979-01-24	1980-07-31	Toyota Motor Co Ltd	Verfahren und einrichtung zum einstellen des ventilspiels und zum pruefen der ventilsteuerung bei brennkraftmaschinen
EP0044013A1 (de) *	1980-07-11	1982-01-20	COMPAGNIE EUROPEENNE POUR L'EQUIPEMENT MENAGER "CEPEM" Société anonyme dite:	Regelvorrichtung für einen Gasbrenner
FR2624586A1 (fr) *	1987-12-11	1989-06-16	Vaillant Sarl	Valve de preference pour la regulation de la pression de gaz d'appareils marchant au gaz
EP0407302A1 (de) *	1989-07-06	1991-01-09	Renault Automation	Verfahren zum Einstellen des Ventilspiels bei Brennkraftmaschinen und Einrichtung zur Durchführung dieses Verfahrens

Also Published As

Publication number	Publication date
IT1253075B (it)	1995-07-10
ITRE910061A0 (it)	1991-09-20
ITRE910061A1 (it)	1993-03-20

Legal Events

Date

Code

Title

Description

1993-03-19

PUAI

Public reference made under article 153(3) epc to a published international application that has entered the european phase

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