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WO2000057107A1 - Robinet de regulation de gaz - Google Patents

Robinet de regulation de gaz Download PDF

Info

Publication number
WO2000057107A1
WO2000057107A1 PCT/EP2000/002487 EP0002487W WO0057107A1 WO 2000057107 A1 WO2000057107 A1 WO 2000057107A1 EP 0002487 W EP0002487 W EP 0002487W WO 0057107 A1 WO0057107 A1 WO 0057107A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
gas
temperature
switch
control
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.)
Ceased
Application number
PCT/EP2000/002487
Other languages
German (de)
English (en)
Inventor
Barbara Happe
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.)
Maxitrol GmbH and Co KG
Original Assignee
Mertik Maxitrol GmbH and Co KG
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
Application filed by Mertik Maxitrol GmbH and Co KG filed Critical Mertik Maxitrol GmbH and Co KG
Publication of WO2000057107A1 publication Critical patent/WO2000057107A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/027—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using mechanical 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
    • 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
    • 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
    • F23N5/06—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bellows; using diaphragms
    • 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 invention relates to a gas control valve for a gas heating furnace or the like according to the preamble of the first claim.
  • Gas control fittings for a gas heating furnace or the like are available in a large number of designs. They are used to regulate a gas flow flowing to a burner while ensuring safety for the operator and the system. For example, the flame size or the room temperature, which is then usually detected by a temperature-sensitive element, serve as the control variable.
  • gas control fittings in which the main flow is switched on or off (two-point regulator) or the gas control fitting has a combination between a two-point regulator and a proportional regulator.
  • a gas control valve which is preferably provided for installation in individual room heaters, and which works without auxiliary energy.
  • the switching system of a combined proportional controller / two-position controller is arranged in the housing after the main valve.
  • This switching system can be influenced via a temperature-sensitive control device. It consists of a sensor located outside the housing and a metal bellows arranged in the gas control valve, both of which are connected to each other via a capillary line, all parts being filled with liquid. If the temperature changes on the sensor, this change is transferred to the switching system with a correspondingly directed movement of the metal bellows. The Temperature compared with the setpoint specified by the setting of an operating button.
  • DE 19746 788 describes a gas control fitting which is intended for use in a gas-fired stove in order to influence the size of the visible flames using a remote control.
  • a switch known per se, is arranged in the housing after the main valve, with a resilient element, which, in conjunction with two valves, effects a modulating control with abrupt switching on and off in the partial load range.
  • This switch can be actuated by a longitudinally movable plunger which protrudes outwards from the gas-carrying housing and the position of which can be changed via an operating element.
  • the operating element can be adjusted manually and / or by means of a drive unit which is formed by an electrically driven motor which is coupled to a battery.
  • This gas control valve does not control the room temperature. It is not possible to make a temperature setting. It is therefore also not possible to carry out a programmable, occasionally temperature-related influencing.
  • thermocouple A thermally controlled switch is used here.
  • the energy obtained from the ignition flame of a second thermocouple is used to control a second control valve.
  • This control valve opens and closes the gas supply to the main burner. To do this, open the circuit with the thermal switch already mentioned or closed. It is also possible, as also shown in the above-mentioned European patent application in FIG. 2, to adjust the amount of gas by using an electromagnet which acts on a pressure regulator.
  • the invention is based on the problem of developing a gas control valve of the type mentioned with which it is possible to carry out a programmable, time-controllable temperature reduction.
  • a Change in the amount of temperature reduction are made possible.
  • the manufacturing effort and the size are to be kept as low as possible.
  • the problem is solved in that the drive unit, which is in the form of a battery-powered, electrically driven motor and by means of which the operating element influencing the position of the temperature-sensitive element can be actuated, is controlled by an electronic control unit at predeterminable time intervals.
  • the control is continued until the control element abuts one of two existing stops during its rotational movement, the respective stop being determined by the time of the control. Furthermore, the position of each of the two stops can be varied.
  • stops are designed as slides which can be inserted manually into slots located in a fixed manner relative to the housing in such a way that the angle of rotation of the operating element can be changed.
  • Fig. 1 shows a gas control valve according to the invention in section
  • Fig. 2 is a view A of the gas control valve according to the invention from Fig. 1 with
  • FIG. 3 shows a view B of the gas control fitting according to the invention from FIG. 1
  • FIG. 4 shows a partial view of section C - C from FIG. 3 of the inventive one
  • the exemplary gas control fitting according to the invention shown in FIG. 1 is a switching and control device which is preferably intended for installation in a single room heater. It enables the burner to be operated and monitored, the pressure to be controlled and the desired room temperature to be set, as well as a programmable and height-adjustable temperature reduction by controlling the amount of gas flowing to the main burner.
  • This gas control valve consists of a housing 1 made of die-cast aluminum, in which the individual functional units are located, some of which can be operated from the outside via control elements 2/3.
  • the housing 1 is composed of an upper part 4 and a lower part 5, between which a flat seal 6 ensures the external tightness.
  • the position of the separation point is not arbitrary and depends on the design of the functional units.
  • Pressure regulator 8 • Temperature controller 9 for the amount of gas flowing to the main burner
  • an actuating rod 10 can be rotated in a bearing point of the upper part 4 and, depending on a guide contour 11, can also be moved longitudinally, the necessary gas tightness being ensured, for example, by a round ring 12.
  • the actuation is carried out by hand via the operating element 2 which is firmly connected to the actuating rod 10.
  • the movement in the longitudinal direction is only possible against the force of a return spring 13 supported on the upper part 4.
  • the starting position, which increases under the force of the return spring 13, is achieved by a transverse pin 14 pressed into the actuating rod 10, which is located inside the housing 1 and, in the starting position, rests against a stop 15 located in the upper part 2.
  • the end of the actuating rod 10 extends into the interior of the lower part 5.
  • a rotary valve 16 which forms the main valve and is made in connection with openings 19/20 explained in more detail below, is guided in the direction of rotation, which is pressed by a bow spring 17 against a sealing surface 18, in each of which an opening 19 for the main gas flow and there is an opening 20 for the ignition gas flow.
  • the guide contour 11 described above is designed such that a movement of the actuating rod 10 in its longitudinal direction is only possible if, due to the position of the rotary valve 16, only the opening 20 is open for the pilot gas flow, the minimum size of the opening cross section being dimensioned in this way that the amount of ignition gas required for ignition can flow through.
  • the lower part 5 Aligned with the rotary valve 16 and thus in the extension of the actuating rod 10, the lower part 5 has an opening 21 which belongs to an ignition safety valve 22.
  • the ignition safety valve 22 is influenced by a thermoelectric ignition safety magnet 23 arranged in a gas-tight manner in a bearing point of the lower part 5.
  • a bracket 24 On the part of the actuating rod 10 protruding into the lower part 5 there is a bracket 24 which is freely movable in the longitudinal direction of the actuating rod 10 but guided in the direction of rotation by the actuating rod 10 and which is loaded in the direction of the ignition safety valve 22 by a spring 25 supported on the rotary slide 16 becomes.
  • the sliding surface 26 formed by the rotary movement of the bracket 24 in the lower part 5 is interrupted by a groove 27 in which the two ends of the bracket 24 are due to the action of the spring 25 when the openings 19 in the upper part 4 are located by the rotary slide 16 / 20 are closed for the main gas flow and the ignition gas flow and at the same time the ignition safety valve 22 is in the open position.
  • the bracket 24 furthermore has a tongue 28 projecting axially in the direction of the ignition safety valve 22, the length of which is dimensioned such that when the ignition safety valve 22 is closed and the openings 19/20 are closed, the two ends of the bracket 24 are located outside the groove 27.
  • the operation of the reclosing lock is as follows: If the pilot gas flow is to be ignited, then the operating rod 10 is turned by means of the operating element 2 so that the opening 20 located in the upper part 4 is sufficiently opened for the pilot gas flow, but the opening 19 is closed for the main gas stream . At the same time, a lock otherwise present through the guide contour 11 is overturned to prevent it from being depressed. The actuating rod 10 is then pushed in so far that its end engages the armature of the ignition protection magnet 23 via the ignition protection valve 22. As illustrated by the flow arrows in FIG. 1, the gas flows through the gas inlet 53 through the opened ignition safety valve 22. Through the opened opening 20, the ignition gas flows through the ignition outlet 54 to the pilot burner (not shown) and can be ignited.
  • the opening 19 for the main gas flow is opened until the maximum opening cross-section is present, which is signaled by a stop, with which the so-called “operating position” is reached. It goes without saying that when the operating element continues to be turned 2 in the “operating position” the operating rod 10 is prevented from being pressed down by the guide contour 11 already mentioned above.
  • the opening 19 for the main gas flow and the opening 20 for the pilot gas flow are closed by the rotary slide valve 16. Due to the still open because energized ignition safety valve 22, the bracket 24 falls with its two ends into the groove 27 and thus prevents the actuating handle 10 from turning and thus reopening of the opening 20 for the ignition gas flow or and the opening 19 for the main gas flow by the rotary slide 16. Only when the ignition safety magnet 23 is no longer energized is the ignition safety valve 22 closed and the two ends of the bracket 24 are moved out of the groove 27 via the tongue 28, so that the ignition can be started again.
  • the pressure regulator 8 is arranged downstream of the start-up 7.
  • the pressure regulator 8 consists of a membrane 29 clamped in a gastight manner on its circumference, in the cup-shaped part of which there is an externally adjustable compression spring 30 which counteracts the gas pressure behind a valve disk 31, which protrudes into the housing 1 on the end face of the cup-shaped part of the membrane 29 is attached.
  • the pressure regulator 8 is set depending on the type of gas used.
  • a switch 33 is located downstream of the pressure regulator 8 within the housing 1.
  • the switch 33 is designed in a known manner in such a way that a modulating control is effected via a valve 44 with a sudden switching on and off in the partial load range via a valve 47.
  • the partial load flow is limited by an adjustable nozzle 34.
  • a plunger 32 which is non-positively connected to the switch 33 and moves longitudinally protrudes from the gas-carrying housing 1 in the upper part 4 which also forms a bearing point for it.
  • a round ring 35 ensures the necessary gas tightness to the outside.
  • the plunger 32 With its end facing away from the switch 33, the plunger 32 is supported by a temperature-sensitive element, in this exemplary embodiment a metal bellows 36, which is located in a tubular attachment 37 which is connected in one piece to the upper part 5 via an excess temperature fuse 56.
  • a metal bellows 36 On its side facing away from the tappet 32, the metal bellows 36 is supported on a pressure piece 38, which in turn is screwably guided in a thread located in the interior of the attachment 37.
  • the pressure piece 38 is in turn firmly connected to the operating element 3, for example by being pressed in.
  • the metal bellows 36 is connected to a temperature sensor 48 via a capillary line 52.
  • the metal bellows 36, capillary line 52 and temperature sensor 48 are filled with a thermoactive liquid and together with the overtemperature fuse 56 form the temperature controller 9.
  • the operating element 3 has a toothing 40 in the area of its outer circumference, into which a pinion 46 belonging to a transmission gear 41 engages.
  • the transmission gear 41 is coupled to a drive unit 42 fastened to the housing 1, which consists of an electric motor and a battery.
  • a slip clutch 43 known to the person skilled in the art and therefore not explained in more detail is arranged between the drive unit 42 and the operating element 3.
  • a guide 49 is arranged in a stationary manner on the housing 1, centered on the operating element 3.
  • This guide 49 has radial slots 50 on its circumference, which serve to receive sliders 51 which are longitudinally movable in them (FIG. 3).
  • the slides 51 limit the angle of rotation of the operating element 3 by representing a stop for a pin 39 located on the operating element 3.
  • the motor is connected via a long-distance cable 45 to an electronic circuit which also specifies the choice of the direction of rotation of the motor, which is integrated in a programmable timer (not shown).
  • the gas control valve works as follows:
  • the main gas flow flows through the opening 19 and the pressure regulator 8 to the switch 33, as is also illustrated by the flow arrows shown in FIG. 1 which regulates the main gas flow to the main burner from the gas outlet 55 as a function of the set soli value, in which case the operating element 3 is usually in the position that the desired room temperature is maintained, which value is advantageously represented by a first stop which is formed by a first - slide 51 and the pin 39 of the control element 3 (Fig. 4).
  • the motor is controlled by the timer, whereby a rotation of the control element 3 is generated via the pinion 46 of the transmission gear 41, which via pressure piece 38, metal bellows 36 and overtemperature protection 56 in one
  • Both temperature values set by the stops can, if desired, be varied by changing the position of the corresponding non-engaged slide 58 in the slots 50 assigned to them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention vise à mettre au point un robinet de régulation de gaz qui permette d'abaisser la température de manière programmable et à temps contrôlé. L'invention vise également à permettre de modifier le niveau de diminution de la température. A cet effet, il est prévu une unité d'entraînement (42) se présentant sous forme de moteur électrique alimenté par batterie, qui permet d'actionner un élément de commande (3) influant sur la position d'un élément thermosensible (36) et est lancé à intervalles prédéterminables par une unité de commande électronique. A cette fin, le moteur est amorcé jusqu'à ce que l'élément de commande (3) se trouve sur une des deux butées présentes, pendant son mouvement de rotation, la butée concernée étant déterminée par le moment où le moteur est lancé. La position de chacune des deux butées est en outre modulable.
PCT/EP2000/002487 1999-03-22 2000-03-21 Robinet de regulation de gaz Ceased WO2000057107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29905204.4 1999-03-22
DE29905204U DE29905204U1 (de) 1999-03-22 1999-03-22 Gasregelarmatur

Publications (1)

Publication Number Publication Date
WO2000057107A1 true WO2000057107A1 (fr) 2000-09-28

Family

ID=8071199

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002487 Ceased WO2000057107A1 (fr) 1999-03-22 2000-03-21 Robinet de regulation de gaz

Country Status (2)

Country Link
DE (1) DE29905204U1 (fr)
WO (1) WO2000057107A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8602047B2 (en) 2009-03-04 2013-12-10 Mertik Maxitrol Gmbh & Co. Kg Gas regulator fitting
DE102018001539A1 (de) * 2018-02-27 2019-09-26 Mertik Maxitrol Gmbh & Co. Kg Einrichtung zur Statusanzeige eines Gasbrenners

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013004745B4 (de) 2013-03-18 2020-03-05 Mertik Maxitrol Gmbh & Co. Kg Gasregelarmatur
CN106523739A (zh) * 2016-12-28 2017-03-22 中山市奥森电子有限公司 一种单电磁阀熄火保护离子感应灶具自动旋塞阀
DE102022112769A1 (de) 2022-05-20 2023-11-23 Vaillant Gmbh Heizgerät und Verwendung einer Einstellanordnung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729884A1 (de) * 1968-03-16 1971-07-08 Kueppersbusch Kochzeitschalteinrichtung fuer Gasbrennstellen mit thermoelektrischer Zuendsicherung
EP0635680A1 (fr) 1993-07-20 1995-01-25 SIT LA PRECISA S.r.l. Un actionneur pour un brûleur à gaz avec un sécurité à flamme et un soupape de commande électromagnétique
GB2317684A (en) * 1996-09-13 1998-04-01 Willey Robinson Ltd An ignition system of a gas heating appliance
DE19746788C1 (de) 1997-10-23 1999-05-12 Mertik Maxitrol Gmbh & Co Kg Gasregelarmatur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729884A1 (de) * 1968-03-16 1971-07-08 Kueppersbusch Kochzeitschalteinrichtung fuer Gasbrennstellen mit thermoelektrischer Zuendsicherung
EP0635680A1 (fr) 1993-07-20 1995-01-25 SIT LA PRECISA S.r.l. Un actionneur pour un brûleur à gaz avec un sécurité à flamme et un soupape de commande électromagnétique
GB2317684A (en) * 1996-09-13 1998-04-01 Willey Robinson Ltd An ignition system of a gas heating appliance
DE19746788C1 (de) 1997-10-23 1999-05-12 Mertik Maxitrol Gmbh & Co Kg Gasregelarmatur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8602047B2 (en) 2009-03-04 2013-12-10 Mertik Maxitrol Gmbh & Co. Kg Gas regulator fitting
US9151497B2 (en) 2009-03-04 2015-10-06 Mertik Maxitrol Gmbh & Co. Kg Gas regulator fitting
DE102018001539A1 (de) * 2018-02-27 2019-09-26 Mertik Maxitrol Gmbh & Co. Kg Einrichtung zur Statusanzeige eines Gasbrenners
DE102018001539B4 (de) * 2018-02-27 2020-03-05 Mertik Maxitrol Gmbh & Co. Kg Einrichtung zur Statusanzeige eines Gasbrenners

Also Published As

Publication number Publication date
DE29905204U1 (de) 1999-06-10

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