EP0293822B1 - Device for adjusting a valve controlling the fuel feed to a burner of an apparatus, particularly a boiler - Google Patents

Device for adjusting a valve controlling the fuel feed to a burner of an apparatus, particularly a boiler Download PDF

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Publication number
EP0293822B1
EP0293822B1 EP88108672A EP88108672A EP0293822B1 EP 0293822 B1 EP0293822 B1 EP 0293822B1 EP 88108672 A EP88108672 A EP 88108672A EP 88108672 A EP88108672 A EP 88108672A EP 0293822 B1 EP0293822 B1 EP 0293822B1
Authority
EP
European Patent Office
Prior art keywords
valve
burner
adjusting
adjusting device
head
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.)
Expired - Lifetime
Application number
EP88108672A
Other languages
German (de)
French (fr)
Other versions
EP0293822A2 (en
EP0293822A3 (en
Inventor
Otto Heinrich Auer
Thomas Pütz
Ernst Söhnchen
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.)
Nv Vaillant Sa
Vaillant-Schonewelle BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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.)
Filing date
Publication date
Priority claimed from AT143087A external-priority patent/AT391194B/en
Priority claimed from AT0289187A external-priority patent/AT390495B/en
Priority claimed from AT58088A external-priority patent/ATA58088A/en
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0293822A2 publication Critical patent/EP0293822A2/en
Publication of EP0293822A3 publication Critical patent/EP0293822A3/en
Application granted granted Critical
Publication of EP0293822B1 publication Critical patent/EP0293822B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details

Definitions

  • the invention relates to a device for adjusting the fuel supply to the burner of a fuel-heated device, in particular a water heater, controlling valves to a selectable partial output of this burner, with a head connected to the valve body via a shaft and coaxial to the valve seat with its head in a force-fitting system stands a curved contact surface of a movably mounted adjusting device, the movement of which moves the valve body.
  • Adjustment devices of this type are known from US-A-2 618 458 and FR-A-1 059 728.
  • the problem with these devices is above all the handling of an adjustment of the valve to different types of gas and device types.
  • Such an adjustment option is indeed provided according to the aforementioned US-PS, in that the slide receiving the valve body can be clamped in different positions within the device housing.
  • this methodology is not very precise and reproducible.
  • the object of the invention is therefore to design a device of the type mentioned at the outset in such a way that it is capable of converting an arbitrary, easy-to-carry out movement of the adjusting device into an exact and translatory movement of the valve body limited to a specific movement range with a few robust and fault-insensitive components .
  • this object is achieved in that the length of the movement path of the adjusting device is limited by an adjustable stop which determines the minimum open position of the valve.
  • valves that are used to supply fuel to gas-heated devices, for example gas-powered water heaters, because of the different performance of such devices, the valves with which, if necessary, a partial performance of the device of just 50% of the nominal power should be set adapt to the respective device type without having to use differently dimensioned valve bodies.
  • the adjustable stop is preferably arranged on the inside of the hood-shaped adjusting device following its curved contact surface and assigned to the free end face of the threaded sleeve forming the guide for the slide. Such a stop can be accommodated well in this area, is easily accessible to the person skilled in the art and does not disturb the overall picture of the adjusting device.
  • the stop can be formed by the head of an adjusting screw screwed to its shaft in the adjusting device.
  • valve body 1 of the valve which is arranged in a fuel supply line 2 leading to a burner and controls the fuel supply is connected via the valve stem 3 to a slide 5 which is coaxial with the valve seat 4 and which is non-positively connected to its head 6 a curved contact surface 7 which rests in the pivot bearing 8 (FIG. 2) pivotally mounting adjusting device 9.
  • This setting device 9 is hood-shaped and forms the contact surface 7 on its concave inside facing the head 6 of the slide 5.
  • the cylindrical guide 10 of the slide 5 is seated in a pipe socket forming the valve housing 11, which - in the example shown - contains in its end opposite the valve body 1 a socket 12 forming the valve seat 4.
  • the guide 10 also has a blind bore 13 penetrated by the valve stem 3, which receives the slide 5 and a return spring 14 acting on it, the latter pressing the head 6 of the slide 5 against the contact surface 7 and holding it in a force-locking connection.
  • a threaded sleeve 15 which is flanged to the end face of the tube, is used to fasten the guide 10 in the valve housing 11.
  • An extension 16 of the adjusting device 9 extends through a recess 17 provided for this purpose in the front wall 18 of the device heated by the burner, for example a water heater.
  • the head 6 of the slide 5 is axially adjustably fixed and fixed, namely screwed, with a threaded shaft 19 in a threaded blind bore of the slide.
  • the path of movement of the pivotably mounted adjusting device 9 is limited by an adjustable stop which determines the minimum open position of the valve 1, 4 - as shown in FIG. 4 - and from the head 27 of an adjusting screw 27, 28 exists, the shaft 28 is screwed in the handle such that the head 27 of the free end face of the threaded sleeve 15 is assigned as a stop opposite.
  • this adjusting screw 27, 28 is provided on the inside of the adjusting device 9 following the curved contact surface 7.

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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)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

A valve, in particular a gas valve for the control of the fuel supply to the burner of a heated apparatus, e.g. a boiler, has a valve body (1) which is movable coaxially against a valve seat (4) and is adjustable against the pressure of a spring (14) via a valve shaft (3). Adjustment takes place by means of a handle (9) with a bearing surface (7) of link-type design, against which the head (6) of a slider (5), which is connected coaxially to the valve shaft (3) and mounted in a guide (10), bears positively under the pressure of the spring (14). The movement path of the handle (9), which is preferably of hood- shaped design, can be limited by at least one adjustable stop (25-27). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Einstellung eines die Brennstoffzufuhr zum Brenner eines brennstoffbeheizten Gerätes, insbesondere eines Wasserheizers, steuernden Ventiles auf eine wählbare Teilleistung dieses Brenners, wobei ein mit dem Ventilkörper über einen Schaft verbundener und zum Ventilsitz koaxialer Schieber mit seinem Kopf in kraftschlüssiger Anlage an einer gekrümmten Anlagefläche einer beweglich gelagerten Einstelleinrichtung steht, durch deren Bewegung der Ventilkörper verschoben wird.The invention relates to a device for adjusting the fuel supply to the burner of a fuel-heated device, in particular a water heater, controlling valves to a selectable partial output of this burner, with a head connected to the valve body via a shaft and coaxial to the valve seat with its head in a force-fitting system stands a curved contact surface of a movably mounted adjusting device, the movement of which moves the valve body.

Einstellvorrichtungen dieser Bauart sind bekannt aus der US-A-2 618 458 sowie der FR-A-1 059 728. Problematisch bei diesen Geräten ist vor allem die Handhabung einer Einstellung des Ventiles auf verschiedene Gassorten und Gerätetypen. Zwar ist gemäß der genannten US-PS eine solche Einstellmöglichkeit vorgesehen, indem der den Ventilkörper aufnehmende Schieber innerhalb des Gerätegehäuses in verschiedenen Stellungen klemmbar ist. Diese Methodik ist jedoch wenig exakt und reproduzierbar.Adjustment devices of this type are known from US-A-2 618 458 and FR-A-1 059 728. The problem with these devices is above all the handling of an adjustment of the valve to different types of gas and device types. Such an adjustment option is indeed provided according to the aforementioned US-PS, in that the slide receiving the valve body can be clamped in different positions within the device housing. However, this methodology is not very precise and reproducible.

Aufgabe der Erfindung ist es deshalb, eine Vorrichtung der eingangs bezeichneten Gattung derart zu gestalten, daß sie befähigt ist, mit wenigen robusten und störungsunempfindlichen Bestandteilen eine willkürliche, einfach durchführbare Bewegung der Einstelleinrichtung in eine exakte und auf einen bestimmten Bewegungsbereich begrenzte translatorische Bewegung des Ventilkörpers umzuwandeln.The object of the invention is therefore to design a device of the type mentioned at the outset in such a way that it is capable of converting an arbitrary, easy-to-carry out movement of the adjusting device into an exact and translatory movement of the valve body limited to a specific movement range with a few robust and fault-insensitive components .

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Länge der Bewegungsbahn der Einstelleinrichtung durch einen verstellbaren Anschlag, der die minimale Offenstellung des Ventils bestimmt, begrenzt ist.According to the invention this object is achieved in that the length of the movement path of the adjusting device is limited by an adjustable stop which determines the minimum open position of the valve.

Dadurch ist es möglich, bei Gasventilen, die der Brennstoffversorgung gasbeheizter Geräte, zum Beispiel mit Gas betriebener Wasserheizer, dienen, wegen der unterschiedlichen Leistung solcher Geräte die Ventile, mit denen bedarfsweise eine Teilleistung des Gerätes von bloß 50 % der Nennleistung eingestellt werden soll, dem jeweiligen Gerätetyp anzupassen, ohne hierfür unterschiedlich bemessene Ventilkörper verwenden zu müssen.This makes it possible for gas valves that are used to supply fuel to gas-heated devices, for example gas-powered water heaters, because of the different performance of such devices, the valves with which, if necessary, a partial performance of the device of just 50% of the nominal power should be set adapt to the respective device type without having to use differently dimensioned valve bodies.

Wesentlich ist vor allem, daß durch die Begrenzung der minimalen Offenstellung des Ventiles eine einwandfreie Überzündung des Brenners auch noch bei Einstellung der kleinsten Teilleistung des Brenners gewährleistet ist.It is particularly important that the limitation of the minimum open position of the valve ensures that the burner is properly ignited even when the lowest partial output of the burner is set.

Der verstellbare Anschlag ist vorzugsweise an der Innenseite der haubenförmig gekrümmten Einstelleinrichtung im Anschluß an deren gekrümmte Anlagefläche angeordnet und der freien Stirnseite der die Führung des Schiebers bildenden Gewindemuffe zugeordnet. Ein solcher Anschlag läßt sich in diesem Bereich gut unterbringen, ist für den Fachmann gut zugänglich und stört nicht das Gesamtbild der Einstelleinrichtung.The adjustable stop is preferably arranged on the inside of the hood-shaped adjusting device following its curved contact surface and assigned to the free end face of the threaded sleeve forming the guide for the slide. Such a stop can be accommodated well in this area, is easily accessible to the person skilled in the art and does not disturb the overall picture of the adjusting device.

Der Anschlag kann vom Kopf einer mit ihrem Schaft in der Einstelleinrichtung verschraubten Stellschraube gebildet sein.The stop can be formed by the head of an adjusting screw screwed to its shaft in the adjusting device.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen veranschaulicht und nachstehend anhand dieser Zeichnungen erläutert. Im einzelnen zeigen

Figur 1
einen Axialschnitt einer bekannten Vorrichtung zur Drosselung der Gaszufuhr,
Figur 2
ist teils ein Horizontalschnitt, teils eine Draufsicht dieser Vorrichtung,
Figur 3
stellt eine Ausführungsform des Erfindungsgegenstandes im Axialschnitt dar und zeigt die maximale Offenstellung des Ventiles, wogegen
Figur 4
die minimale Offenstellung darstellt.
Figur 5
zeigt den Horizontalschnitt einer geringfügig abgewandelten Ausführungsform.
Embodiments of the subject matter of the invention are illustrated in the drawings and explained below with reference to these drawings. Show in detail
Figure 1
3 shows an axial section of a known device for throttling the gas supply,
Figure 2
is partly a horizontal section, partly a top view of this device,
Figure 3
represents an embodiment of the subject of the invention in axial section and shows the maximum open position of the valve, whereas
Figure 4
represents the minimum open position.
Figure 5
shows the horizontal section of a slightly modified embodiment.

Gemäß der bekannten Vorrichtung nach den Figuren 1 und 2 ist der Ventilkörper 1 des in einer zu einem Brenner führenden Brennstoffzufuhrleitung 2 angeordneten, die Brennstoffzufuhr steuernden Ventiles über den Ventilschaft 3 mit einem zum Ventilsitz 4 koaxialen Schieber 5 verbunden, der mit seinem Kopf 6 kraftschlüssig an einer gekrümmten Anlagefläche 7 der im Schwenklager 8 (Figur 2) schwenkbar lagernden Einstelleinrichtung 9 anliegt.According to the known device according to FIGS. 1 and 2, the valve body 1 of the valve which is arranged in a fuel supply line 2 leading to a burner and controls the fuel supply is connected via the valve stem 3 to a slide 5 which is coaxial with the valve seat 4 and which is non-positively connected to its head 6 a curved contact surface 7 which rests in the pivot bearing 8 (FIG. 2) pivotally mounting adjusting device 9.

Diese Einstelleinrichtung 9 ist haubenförmig gestaltet und bildet an ihrer dem Kopf 6 des Schiebers 5 zugewendeten konkaven Innenseite die Anlagefläche 7.This setting device 9 is hood-shaped and forms the contact surface 7 on its concave inside facing the head 6 of the slide 5.

Die zylindrische Führung 10 des Schiebers 5 sitzt in einem das Ventilgehäuse 11 bildenden Rohrstutzen, der - bei dem dargestellten Beispiel - in seinem dem Ventilkörper 1 gegenüberliegenden Ende eine den Ventilsitz 4 bildende Buchse 12 enthält. Die Führung 10 weist ferner eine vom Ventilschaft 3 durchsetzte Sackbohrung 13 auf, die den Schieber 5 und eine auf ihn einwirkende Rückholfeder 14 aufnimmt, wobei letztere den Kopf 6 des Schiebers 5 gegen die Anlagefläche 7 drückt und in kraftschlüssiger Verbindung hält.The cylindrical guide 10 of the slide 5 is seated in a pipe socket forming the valve housing 11, which - in the example shown - contains in its end opposite the valve body 1 a socket 12 forming the valve seat 4. The guide 10 also has a blind bore 13 penetrated by the valve stem 3, which receives the slide 5 and a return spring 14 acting on it, the latter pressing the head 6 of the slide 5 against the contact surface 7 and holding it in a force-locking connection.

Zur Befestigung der Führung 10 im Ventilgehäuse 11 dient eine Gewindemuffe 15, die an die Stirnsteite des Rohres angeflanscht ist.A threaded sleeve 15, which is flanged to the end face of the tube, is used to fasten the guide 10 in the valve housing 11.

Ein Fortsatz 16 der Einstelleinrichtung 9 durchragt eine hierfür vorgesehene Ausnehmung 17 der Frontwand 18 des vom Brenner beheizten Gerätes, zum Beispiel eines Wasserheizers.An extension 16 of the adjusting device 9 extends through a recess 17 provided for this purpose in the front wall 18 of the device heated by the burner, for example a water heater.

Der Kopf 6 des Schiebers 5 ist mit einem Gewindeschaft 19 in einer Gewindesackbohrung des Schiebers axial einstellbar befestigt und fixiert, nämlich verschraubt. Dadurch wird die Länge der aus dem Ventilkörper 1, dessen Ventilschaft 3, dem Schieber 5 und dem Kopf 6 bestehenden Einheit exakt bestimmbar.The head 6 of the slide 5 is axially adjustably fixed and fixed, namely screwed, with a threaded shaft 19 in a threaded blind bore of the slide. As a result, the length of the unit consisting of the valve body 1, its valve stem 3, the slide 5 and the head 6 can be exactly determined.

Bei den in den Figuren 3 bis 5 dargestellten erfindungsgemäßen Ausführungsformen ist die Bewegungsbahn der schwenkbar gelagerten Einstelleinrichtung 9 durch einen verstellbaren Anschlag begrenzt, der die minimale Offenstellung des Ventiles 1, 4 - wie Figur 4 zeigt - bestimmt und aus dem Kopf 27 einer Stellschraube 27, 28 besteht, deren Schaft 28 im Handgriff derart verschraubt ist, daß der Kopf 27 der freien Stirnseite der Gewindemuffe 15 als Anschlag gegenüberliegend zugeordnet ist.In the embodiments according to the invention shown in FIGS. 3 to 5, the path of movement of the pivotably mounted adjusting device 9 is limited by an adjustable stop which determines the minimum open position of the valve 1, 4 - as shown in FIG. 4 - and from the head 27 of an adjusting screw 27, 28 exists, the shaft 28 is screwed in the handle such that the head 27 of the free end face of the threaded sleeve 15 is assigned as a stop opposite.

Diese Stellschraube 27, 28 ist zu diesem Zweck an der Innenseite der Einstelleinrichtung 9 im Anschluß an die gekrümmte Anlagefläche 7 vorgesehen.For this purpose, this adjusting screw 27, 28 is provided on the inside of the adjusting device 9 following the curved contact surface 7.

Die Ausführungsform nach Figur 5 mit einer den Ventilsitz 4 bildenden Buchse 12 ist dann empfehlenswert, wenn die Armatur einer bestimmten Gassorte angepaßt werden muß.The embodiment according to FIG. 5 with a bushing 12 forming the valve seat 4 is recommended if the fitting has to be adapted to a specific type of gas.

Claims (3)

  1. An apparatus for adjusting a valve for controlling the supply of fuel to the burner of a fuel-firing apparatus, particularly of a water heater, for the operation of said burner with a selectable partial power, wherein a slider (5) is provided, which is connected by a stem (3) to the valve member (1) and is coaxial to the valve seat and has a head (6) in non-positive engagement with a curved engaging surface (7) of a movably mounted adjusting device (9), which is movable to displace the valve member (1), characterized in that the length of the path of movement of the adjusting device (9) is limited by an adjustable stop (27), which defines the minimum flow area position of the valve.
  2. An apparatus according to claim 1, characterized in that the adjustable stop (27) is provided on the inside of the adjusting device (9), which is curved like a hood, and said stop is disposed near the curved engaging surface (7) of said device and is associated with the free end face of the tapped sleeve (15), which constitutes a guide (10) for the slider (5).
  3. An apparatus according to claim 1 or 2, characterized in that the adjustable stop (27) is constituted by the head of an adjusting screw (27, 28), the shank (28) of which is screwed in the adjusting device (9).
EP88108672A 1987-06-05 1988-05-31 Device for adjusting a valve controlling the fuel feed to a burner of an apparatus, particularly a boiler Expired - Lifetime EP0293822B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT1430/87 1987-06-05
AT143087A AT391194B (en) 1987-06-05 1987-06-05 Device for setting a valve controlling the supply of fuel to the burner of a waterheater
AT0289187A AT390495B (en) 1987-11-03 1987-11-03 Gas valve
AT2891/87 1987-11-03
AT580/88 1988-03-07
AT58088A ATA58088A (en) 1988-03-07 1988-03-07 DEVICE FOR ADJUSTING A VALVE CONTROLLING THE FUEL SUPPLY TO THE BURNER OF A FUEL HEATED

Publications (3)

Publication Number Publication Date
EP0293822A2 EP0293822A2 (en) 1988-12-07
EP0293822A3 EP0293822A3 (en) 1990-01-17
EP0293822B1 true EP0293822B1 (en) 1993-01-07

Family

ID=27146481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108672A Expired - Lifetime EP0293822B1 (en) 1987-06-05 1988-05-31 Device for adjusting a valve controlling the fuel feed to a burner of an apparatus, particularly a boiler

Country Status (5)

Country Link
EP (1) EP0293822B1 (en)
AT (1) ATE84359T1 (en)
DE (2) DE3877258D1 (en)
ES (1) ES2037764T3 (en)
GR (1) GR3007209T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109128118A (en) * 2018-09-20 2019-01-04 天津华北集团铜业有限公司 A kind of novel casting component

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618458A (en) * 1947-09-24 1952-11-18 Tecumseh Products Co Cam actuated valve
US2715010A (en) * 1949-06-28 1955-08-09 Donald H Reeves Fluid valve assembly
CH275915A (en) * 1949-10-10 1951-06-15 Lengg Friedrich Shut-off valve.
FR1059728A (en) * 1952-07-12 1954-03-26 Robinetterie De Prec Improvements in devices such as valves for fluids, more especially for gas stoves or stoves
CH470620A (en) * 1967-02-01 1969-03-31 Holzer Ueltschi Ernst Valve with spring-loaded valve body
GB1371578A (en) * 1973-06-28 1974-10-23 Flavel Co Ltd Sidney Gas control valves

Also Published As

Publication number Publication date
DE3877258D1 (en) 1993-02-18
ES2037764T3 (en) 1993-07-01
EP0293822A2 (en) 1988-12-07
DE3818427A1 (en) 1988-12-15
GR3007209T3 (en) 1993-07-30
EP0293822A3 (en) 1990-01-17
ATE84359T1 (en) 1993-01-15

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