US3770363A - Rotary gas control with a thermoelectric ignition safety device and piezoelectric igniter - Google Patents

Rotary gas control with a thermoelectric ignition safety device and piezoelectric igniter Download PDF

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Publication number
US3770363A
US3770363A US00222564A US3770363DA US3770363A US 3770363 A US3770363 A US 3770363A US 00222564 A US00222564 A US 00222564A US 3770363D A US3770363D A US 3770363DA US 3770363 A US3770363 A US 3770363A
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United States
Prior art keywords
handle
gas
ignition
valve
rotary
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Expired - Lifetime
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US00222564A
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English (en)
Inventor
P Friedrich
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Vaillant GmbH
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Joh Vaillant GmbH and Co
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    • 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
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • F23Q9/14—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame using electric means, e.g. by light-sensitive elements
    • 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
    • F24C3/10—Arrangement or mounting of ignition devices
    • 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
    • F24C3/10—Arrangement or mounting of ignition devices
    • F24C3/103—Arrangement or mounting of ignition devices of electric ignition devices

Definitions

  • a rotary gas control apparatus has a rotary handle adapted for rotation from a gas-off position via an ignition stand-by position into a gas-on position.
  • a piezo-electric ignition device with an impact mechanism is energized.
  • the rotary handle In the ignition stand-by position, the rotary handle may be depressed, whereby a safety valve is opened and gas is allowed to flow to a pilot burner.
  • the handle In the depressed position, the handle is rotatable from the ignition stand-by position through a limited angle to an ing'ition position, whereby the ignition device is triggered and the pilot burner is lit thereby.
  • a magnet thermoelectrically energized by the pilot burner holds the safety valve open.
  • the handle is returned to the ignition stand-by position, moved outward and can now be rotated to the gas-on position, in which a main gas valve opens to permit the flow of gas to a main burner.
  • the invention relates to a rotary-gas control for gasheated apparatus having a rotary handle for rotation from a gas-off position via an ignition stand-by position into a gas-on position and in which the rotating motion of the handle enables a piezo-electric ignition device with an impact mechanism to be stress ably and automatically triggered.
  • a nose provided on the rotary handle, moves below the control arm of the impact element so that the control arm once again assumes its stand-by position an the rotary gas switch.
  • This kind of rotary gas control may be used, for example, in conjunction with a known bimetallic ignition safety device for monitoring the main gas path.
  • thermoelectric ignition safety device It is known that theremust be provision for placing the armature plate of the switch magnet manually in position in a thermoelectric ignition safety device. Such positioning is maintained until the thermocouple is sufficiently heated by the ignition flame to energize the retaining magnet.
  • the object of the present invention is to ignite the pilot flanie piezo-electrically when the rotary handle is rotated into the ignition position and to cause the armature plate to bear on themagnet. Furthermore, it is another object of the invention to permit, from the beginning of the time at which the ignition gas path is opened to the time at which the piezo igniter is triggered, a flushing time during which the air contained in the pilot gas pipe may escape so that the pilot flame is reliably ignited when the stressed impact element is triggered.
  • the rotary handle can be depressed only in the ignition stand-by'position when the impact mechanism is stressed in order to push open a safety valve of a thermoelectric ignition safety device and to release an ignition gas flow and may be further rotatable in the depressed position to a limited extent sufficient for trig-- pli catio'n by Gunther Mobus and Ernst Sohnchen for GAS CONTROL SYSTEM WITH THERMOELEC- TRIC IGNITION SAFETY DEVICE filed Apr. 29, I971 Serial No 138 579 and assigned to Job. Vaillant KG.). Furthermore, the rotary handle may be rotated through a slotted link guide to the left as far as a fixed stop abutment and the piezo impact mechanism may be triggered so that the ignition flame is ignited.
  • thermoelectric safety device When the magnet is sufficiently energized, that is to say the safety valve remains open, the rotary handle is turned back to the right into a set position whereupon a spring then returns the handle in the axail direction. In this position of the rotary handle the thermoelectric safety device is open and the pilot flame burns. Further rotation of the rotary handle into the next set position opens the main gas valve while the pilot flame continues to burn.
  • the depressing action and triggering of the piezo ignition device is' separated by a rotary motion which provides a time delay between the release of. ignition gas and the ignition thereof. Accordingly, the ignition spark is not produced simultaneously with the release of the ignition gas occasioned by depressing the rotary handle. If this is the case, experience shows that the piezo-electric igniter must be repeatedly actuated, that is to say the entire operating sequence of the rotary handle may have to be repeated several times from the off position, past the position of ignition stand-by to the depressed position in order'to trigger ignition. This is due to the fact that after the heater has been inoperative for a given period of time it is necessary for the ignition gas to displace the air contained in the ignition burner tube.
  • FIG. 1 shows in diagrammatic form a rotary gas control according to the invention in the closed position.
  • FIG. 2 shows the rotary gas control in the ignition stand-by position.
  • FIG. 3 shows a detail of FIG. 2 in plan view.
  • FIG. 4 shows the rotary gas control in the depressed position.
  • FIG. 5 shows a detail similar to FIG. 3 further rotation of the rotary handle for triggering the ignition.
  • FIG. 6 shows the rotary gas control in the open position.
  • FIG. 7 shows a front view of the rotary gas control with the piezo-electric ignition device in the closed position.
  • FIG. 8 is a view corresponding to FIG. 7 in the ignition stand-by position.
  • FIG. 9 is a view corresponding to FIG. 7 in the ignition position.
  • FIG. 10 is a view corresponding to FIG. 7 in the operating position.
  • FIG. 1 1 is a sectional view of an entire rotary gas control with thermoelectric ignition safety device.
  • FIG. 1 a collar 3 of a rotary handle 2 is rotatably supported in a housing 1.
  • a tubular extension 5 is unitary with the collar 3.
  • cam 6 On the circumference of'part of the length of the extension there is a cam 6.
  • the valve closure 7 is moved from its seat by a valve stem 8 actuated by cam 6 against the urging of a spring 9.
  • Cams 13 are mounted on the circumference of the rotary handle within the tubular extension 5.
  • a thrust member 14 Opposite these cams is a thrust member 14 having cam tracks 16.
  • a spring (not shown in this view) urges a thrust pin 15 upwardly in FIG. 1 so that cam tracks 16 are resiliently urged against cam 13.
  • the cams In the position illustrated in FIG. 1 the cams are positioned in the depressions 17. This position is the off position of the gas control, that is to say both the ignition gas passage and the main gas passage are closed.
  • the rotary handle 2 is rotated to the FIG. 2 position.
  • the earns 13 move from'the depressions 17 to the depressions 18.
  • the position of the thrust member 14 has not changed axially relative to the off position.
  • the cam 6 has moved the valve closure 7 from its seat thus opening the passage from the ignition gas duct 10 to the ignition burner duct 12.
  • This rotation into the ignition stand-by position causes the slots 19, distributed about the circumference of the collar 3, to be aligned with noses 20, which are fixed relative to the housing, a feature shown in FIG. 3 in plan view and diagrammatically in the interests of clarity.
  • the impact element 23 is pivotally mounted on a bearing pin 26 which is joined to a frame 25.
  • Indicating marks are provided on the rotary handle. These may be brought into alignment with the pointer 29 which is fixed relative to the housing.
  • the off position of the gas switch is a solid black dot 30, the ignition stand-by position has as a symbol the star 31, the ignition position, obtained by additional rotation of the rotary handle 2, is identified by a star and a jagged arrow 32 and, if the mark 33 coincides with the pointer 29 the gas switch shall have reachedthe full burning position.
  • the rotary handle 2 continues to be moved from the rotary position illustrated in FIG. 4 by the rotary distance a, the apertures 19 on the collar 3 of the rotary handle 2 move below the noses 20 as far as the stop abutments 34 which extend from the noses, see FIG. 5.
  • the depression of the rotary handle opens the safety valve so that gas commences to flow to the ignition burner.
  • the time which elapses from that occurrence and left-hand rotation to the previously mentioned stop abutment 34 is the flushing time during which the air in the ignition burner tube 12 may escape.
  • a rotary handle 2 After the retaining magnet is energized in known I manner by the heating of the thermocouple, a rotary handle 2 is allowed to rotate in the reverse direction by the rotary distance a. This occurs by reason of the cam 13 sliding down the incline 37 of cam track 16.
  • the thrust member 14 follows axially and once again assumes the starting position according to FIG. 4. After the rotary handle is released, it once again moves outwardly so that the thrust member 14 once again assumes its position illustrated in FIG. 2.
  • the rotary handle 2 In order to open the main gas passage to the burner, the rotary handle 2 is rotated from the position according to 2 into the position according to FIGS. 6 and FIG. 10. Under these conditions the thrust member 14 follows the cam 13 so that the cams 13 are seated in the depressions 38. I
  • This axial motion of the thrust member 14 and of the thrust pin 15 opens the main burner: gas valve, previo'usly kept closed, said valve controlling the passage of gas to the burner and being disposed downstream of the safety valve.
  • the main gas valve is handle only in the open position illustrated in FIG. 6. As is known, the gas path as described is controlled by the gas valve of the low-water safety device.
  • FIG. 11 shows the entire construction of the rotary gas switch thermoelectric ignition safety device, corresponding substantially to the said co-pending application by Gunther Mobus and Ernst Sohnchen entitled Gas Control System with Thermoelectric Ignition Safety Device filed Apr. 29, 1971 Ser. No. 138 579 (see FIGS. 5-8 thereof) to which reference is had for supplementing the disclosure.
  • the thrust pin 15 acts via a rocker lever 38 on to a push rod 39.
  • the rod moves in sealing-tight manner through a main valve closure 40 which controls thegas path leading to a gas outlet 41 which in turn connects to the main burner.
  • a spring 50 bears against a collar I 51 on push rod 39 and against a wall of the housing 1 to urge rod 39 downwardly in FIG. 11.
  • a collar 52 on rod 39 urges rocker lever 38 in a clockwise direction and thrust pin and handle 2 to the left.
  • the rod 39 enables a safety valve closure 42 to be pushed open to permit gas from the inlet 43 to reach the passage 12 (the movement taking place against the gas stream) pushed open to permit gas.
  • the closure 42 also embodies the armature for the ignition safety magnet 44. Reverse motion of the push rod 39 to the open position of the rotary handle 2 causes a stop abutment 45 to entrain the valve closure 40 thus opening the gas path to the main burner.
  • thermoelectric safety device comprising valve means including a safety valve, rotary handle means connected to said valve means and rotatable from a gas-off position first to an ignition stand-by position and then into a gas-on position, a piezoelectric ignition device, an impact mechanism for said device means connecting the handle means and the impact mechanism for actuating the mechanism to impact on the device upon movement of the handle, the improvement comprising:
  • said handle means being movable axially to. a depressed position only when in the ignition stand-by position to there-upon open said safety valve and release an ignition gas flow, and while in said depressed position may be farther rotated to a limited extent sufficient for triggering said impact mechanism.
  • a gas control apparatus comprising a housing member on which is mounted a piezoelectric ignition element, a-pilot valve, a main burner valve, asafety valve between a gas inlet and the pilot and main burner valves, valve actuating means operatively connecting the valves and including a movable handle for maintaining all of said valves closed at a first rotational position, for opening the pilot valve at a second rotational position in a given rotational direction from said first position, for opening said safety valve after axial movement of the handle at said second rotational position to an axially displaced position, for latching said safety valve open folowing a predetermined period of burning of the gas flowing through the pilot valve whereupon said axial movement may be reversed, and for opening the main valve upon continued rotation of the handle in said given direction to a third position, the improvement comprising:
  • said handle or said actuating means being rotatable to a fourth rotational position when in said axially displaced position
  • operating means for said element and including hammer means positioned for striking said element when the handle is moved to the fourth position from the second position.
  • said hammer means includes a two-armed lever with a hammer on one arm thereof, said lever having a slot intermediate said arms, a pin extending through said slot and pivotally supporting said lever, a spring connected to said lever and urging the hammer against the element and said lever to a position at which said pin is at one end of said slot, said actuating means having a cam to contact said other arm and actuate said lever.
  • said members have portions thereof in juxtaposition as said handle is rotated with respect to said housing member, said portion of one of said members having a nose and said portion of the other member having a slot which is intermediate the portion thereof, is of a size to receive said nose and is radially aligned with the nose when said handle is insaid second position so that said axial movement can be made and when in-the displaced position and rotated to the fourth position said nose will pass under a part of the other member's portion at a side of the slot to maintain handle axially displaced,
  • valve actuating means including spring means resiliently urging said handle in an axial direction away from said axially displaced position
  • said portions having stop means to prevent rotation of said handle member beyond said fourth position when axially displaced as aforesaid.

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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)
  • Control Of Combustion (AREA)
US00222564A 1971-02-03 1972-02-01 Rotary gas control with a thermoelectric ignition safety device and piezoelectric igniter Expired - Lifetime US3770363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT88871A AT306303B (de) 1971-02-03 1971-02-03 Drehgasschalter mit thermoelektrischer Zündsicherung

Publications (1)

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US3770363A true US3770363A (en) 1973-11-06

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US00222564A Expired - Lifetime US3770363A (en) 1971-02-03 1972-02-01 Rotary gas control with a thermoelectric ignition safety device and piezoelectric igniter

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US (1) US3770363A (fr)
AT (1) AT306303B (fr)
BE (1) BE778761A (fr)
CH (1) CH538648A (fr)
ES (1) ES399265A1 (fr)
FR (1) FR2125097A5 (fr)
GB (1) GB1364015A (fr)
IT (1) IT947220B (fr)
NL (1) NL7201382A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110065A (en) * 1976-01-14 1978-08-29 Aero-Spec Products Co., Ltd. Cock apparatus of automatic ignition type for gas appliance
US4346835A (en) * 1981-04-08 1982-08-31 Albin Trotter Instantaneous water heater gas control valve
US4870314A (en) * 1987-11-23 1989-09-26 The Coleman Company, Inc. Cam-actuated piezoelectric ignition device for gas appliance
US6488495B1 (en) * 2000-03-15 2002-12-03 The Coleman Company, Inc. Lantern with improved choke
US20060172237A1 (en) * 2003-03-03 2006-08-03 Barbara Happe Gas regulating fitting
CN102538205A (zh) * 2012-03-26 2012-07-04 常熟市斯佳登电器有限公司 一种燃气热水器的集气罩
US20150059733A1 (en) * 2013-09-03 2015-03-05 Illinois Tool Works Inc. Rotatable switch for appliance valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207993A (en) * 1987-08-12 1989-02-15 Baxi Partnership Ltd Gas boiler control
DE102005032509B4 (de) * 2004-07-15 2017-06-01 BSH Hausgeräte GmbH Bedienelement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550603A (en) * 1967-11-25 1970-12-29 Vaillant Joh Kg Rotary gas switch,in particular for water heaters
US3676047A (en) * 1970-08-10 1972-07-11 Rinnai Kk Gas control valve means having a piezoelectric firing unit
US3676041A (en) * 1969-09-26 1972-07-11 Vaillant Joh Kg Gas burner control apparatus for operating a piezoelectric ignition system in conjunction with the gas valves

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550603A (en) * 1967-11-25 1970-12-29 Vaillant Joh Kg Rotary gas switch,in particular for water heaters
US3676041A (en) * 1969-09-26 1972-07-11 Vaillant Joh Kg Gas burner control apparatus for operating a piezoelectric ignition system in conjunction with the gas valves
US3676047A (en) * 1970-08-10 1972-07-11 Rinnai Kk Gas control valve means having a piezoelectric firing unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110065A (en) * 1976-01-14 1978-08-29 Aero-Spec Products Co., Ltd. Cock apparatus of automatic ignition type for gas appliance
US4346835A (en) * 1981-04-08 1982-08-31 Albin Trotter Instantaneous water heater gas control valve
US4870314A (en) * 1987-11-23 1989-09-26 The Coleman Company, Inc. Cam-actuated piezoelectric ignition device for gas appliance
US6488495B1 (en) * 2000-03-15 2002-12-03 The Coleman Company, Inc. Lantern with improved choke
US20060172237A1 (en) * 2003-03-03 2006-08-03 Barbara Happe Gas regulating fitting
JP2006519346A (ja) * 2003-03-03 2006-08-24 メルチク マクシトロール ゲーエムベーハー ウント カンパニー カーゲー ガス調整バルブ
US7507085B2 (en) * 2003-03-03 2009-03-24 Mertik Maxitrol Gmbh & Co. Kg Gas regulating fitting
CN102538205A (zh) * 2012-03-26 2012-07-04 常熟市斯佳登电器有限公司 一种燃气热水器的集气罩
US20150059733A1 (en) * 2013-09-03 2015-03-05 Illinois Tool Works Inc. Rotatable switch for appliance valve
US9976748B2 (en) * 2013-09-03 2018-05-22 Illinois Tool Works Inc. Rotatable switch for appliance valve

Also Published As

Publication number Publication date
GB1364015A (en) 1974-08-21
BE778761A (fr) 1972-05-16
DE2164070A1 (de) 1972-08-10
ES399265A1 (es) 1974-12-01
FR2125097A5 (fr) 1972-09-22
IT947220B (it) 1973-05-21
AT306303B (de) 1973-04-10
CH538648A (de) 1973-06-30
NL7201382A (fr) 1972-08-07
DE2164070B2 (de) 1976-09-16

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