US3771942A - Rotary valve and piezo-electric firing unit - Google Patents

Rotary valve and piezo-electric firing unit Download PDF

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Publication number
US3771942A
US3771942A US00193300A US3771942DA US3771942A US 3771942 A US3771942 A US 3771942A US 00193300 A US00193300 A US 00193300A US 3771942D A US3771942D A US 3771942DA US 3771942 A US3771942 A US 3771942A
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US
United States
Prior art keywords
hammer
gas
lever
valve
piezo
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
US00193300A
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English (en)
Inventor
E Sohnchen
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Vaillant GmbH
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Vaillant GmbH
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Filing date
Publication date
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Publication of US3771942A publication Critical patent/US3771942A/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/002—Igniters using electrically-produced sparks using piezoelectric 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
    • F24C3/103—Arrangement or mounting of ignition devices of electric ignition devices

Definitions

  • a gas valve has a knob which is rotated to turn the gas on. This causes a correspondng rotation of a lug on the knob.
  • a lever is pivotally mounted with one end in the path of the lug so as to be contacted by the lug and pivoted as the gas is turned on. The other end of the lever forms a hammer for striking the piezoelectric element of an igniter.
  • a spring resiliently holds the hammer against the element. As the gas is turned on the lug releases the lever to strike the element.
  • the pivotal mounting for the lever is formed by a slot in the lever positioned on a fixed pin, so that as the knob is turned in the gas-off direction the lug will push on the lever causing it to slide on the pin and thereby move out of the path of the lug.
  • the control is one in which the ignition spark production by means of the piezo-electric igniter device takes place simultaneously with the release of pilot gas to a pilot burner on the heater.
  • a manually actuated piezo-electric igniter device is known (German Auslegeschrift 1,228,883), in which a plunger acting as a hammer is secured between the free limbs of a U-shaped leaf spring.
  • the plunger is formed with a groove having an edge against which the short arm of a two-armed lever presses.
  • the long arm of the lever is pivoted manually, so that it rotates about a fixed axis and moves the plunger against the force of the springs.
  • a fixed stop is situated in the path of the lever and as soon as the lever abutment surface reaches this stop the pivoting movement is concluded.
  • the lever arm As the lever arm is subjected to further force, the lever is pivoted about the point of contact between the abutment surface and the stop as a fulcrum, and the lever bore formed as a.slot moves downwardly with respect to the pivot axis engaging therein.
  • the short lever arm is thus disengaged from the edge of the plunger, so that the latter strikes a piezo-electric element by its striker portion, the force applied being supplied by the tensioned leaf springs.
  • the top edge of the short lever arm is situated beneath an edge of the plunger.
  • the axis bears against the top edge of the slot.
  • a return spring has a return effect on the lever and causes it to slide along beneath the edge of the plunger and then re-enter the plunger groove. The lever thus moves beneath the plunger and the igniter device is re-set for fresh spark production. This process can'be repeated as often as required.
  • the object of the present invention is to provide a combination of a rotary switch and a piezo-electric ig-' niter device whereby'the piezo-electric igniter device is actuated simultaneously after the rotary control, for example a gas valve,has been-rotated from the off position into the ignition position, the rotary switch being free to rotate in either direction.
  • a hammer of the igniter device is mounted on an arm of a two-armed lever.
  • the lever is mourited by a slot on a pivot pin, and bears against a striker pin of the piezo-electric igniter in the inoperative position under the influence of a spring.
  • the knob of the control has a driver lug which moves along a circular path as the knob is rotated.
  • the other arm of the lever projects into said: path.
  • FIG. 1 is an example of an embodiment of the invention with the control knob in the off position;
  • FIG. 2 shows the embodiment as the knob is moved toward the ignition position
  • FIG. 3 shows the embodiment in the ignition position
  • FIG. 4 shows the embodiment as the knob is moved I back to the off position.
  • FIG. 1 illustrates a rotary gas valve 1 having a knob 2.
  • a piezo-electric igniter device generally 3, is mounted on the valve.
  • the knob 2 is secured to a spindle 4.
  • the flow of gas for the ignition flame and for the main flame of the heater is controlled via thespindle 4.
  • the knob 2 has marks (indicia) which deno te the respective positions in regard to controllingthe gas.
  • the knob 2 can be rotated to bring the marks into line with a fixed pointer 5.
  • Mark 6 denotes the initial position of the gas control member 2 at which the valves are closed.
  • Mark 7 represents the ignition position of the knob.
  • Mark 8 shows the valve open position for the main burner.
  • Knob 2 has a'lug 9 on its periphery for actuationof the igniter device 3."
  • the igniter device 3 includes piezo-electricelement 11 mounted on the valve frame 10. This element has one end bearing against abutment l2 on frame 10 and includes a striker pin" 13 located at its other end.
  • a pin 14 is secured to the frame 10.
  • a two-arm striker lever, generally 15, is mounted on the pin to be rotatable and slidable thereon.
  • the bearing aperture 14' is in the form of a slot in the lever.
  • One arm, the actuating arm 16', projects into the path of rotation of the lug 9.
  • the other arm, the hammer I7, is located to contact the striker pin 13.
  • a tension spring 19 is connected to the hammer 17 at l8.'The other end of the spring is secured to the frame 10 at 20. High-voltage from the element 11 is fed via cable 21 to the ignition electrode (not shown) in known manner.
  • the operation is as follows. To start the gas heater, the knob 2 is rotated counterclockwise from the off'position' shown in FIG. 1 into; the ignition position in which the mark -7 coincides with the pointer SJFIG. 2
  • I illustrates the'position after a part of this rotation has been accomplished.
  • the lug 9 engages the actuating arm 16 and pivots the striker lever 15 clockwise against the force of the spring 19.
  • ignition gas is already released. lmmediately thereafter and before the two marks coincide the lug 9 passes and thereby releases the actuating arm 16. See FIG. 3.
  • the spring rotates lever in the counterclockwise direction and the hammer 17 violently strikes the striker pin 13. This is shown in broken lines in FIG. 3. This causes an ignition spark to be produced which ignites the pilot burner in known manner.
  • the main and pilot gas flow passages are closed by a clockwise rotation of knob 2.
  • the ignition position of the knob as shown in FIG. 3 is restored.
  • the lug is now approaching to the actuating arm 16 which is in the position shown in broken lines in FIG. 3.
  • the lug 9 contacts the arm 16.
  • the hammer l7 bears against the striker pin 13 as a pivot point
  • the actuating arm 16 is pushed back by the lug 9 against the force of the spring 19, the slot 14' moving along the pin 14.
  • the striker lever 15 moves from the broken line position to the full line position in FIG. 4.
  • the ignition operation when the heater is started up can be repeated as often as required. If the pilot gas does not ignite, the knob is turned back into the off position, the lug 9 on the knob 2 moving beneath the striker member as described above.
  • the operation of the piezo-electric igniter device has been described with reference to a rotary gas control, in which a pilot flame associated with a main burner is ignited, some security being obtained by the automatic sequence of release of pilot gas and thereafter release of main gas flow at the marked positions on the knob.
  • This sequence of operations does not, for example, include a burner safety device.
  • this piezo-electric igniter device for igniting the pilot burner can be used equally well in a main gas flow safety device controlled by the pilot flame heat.
  • a thermo-electric burner safety device when the knob 2 reaches the ignition position and the pilot gas flow is released, the knob can be axially displaced so that an armature is applied to a magnet in known manner, the flow of pilot gas to the pilot burner being maintained when the knob is pressed in and the pilot flame heating the thermocouple.
  • the pilot gas and main gas control valves actuated by the rotary gas control knob may be of any desired construction.
  • the passages for the two gases may, for example, be provided in a cock or alternatively they may be valves which are opened successively with respect to the gas flow.
  • a valve for controlling the flow of gas a piezo-electric element for supplying the electric energy for gas ignition, and a device for actuating the elementwhen the valve is operated to release gas, the improvement comprising:
  • valve having an element that is rotated in a given direction from a gas-off position to a gas-onposition, said valve element having a driver member which moves along a given path as said valve element is rotated between said positions;
  • said device for actuating the piezo-electric element including a pivotally mounted hammer, spring means operatively connected to the hammer for urging the hammer pivotally against the piezoelectric element, and an operating member connected to the hammer and positioned in said path to be contacted by one side of the driver member and moved by the driver member as the latter moves in said given direction for thereupon pivoting the hammer away from the piezo-electric element and then releasing the hammer whereupon the operating member returns to said path on the other side of the driver member;
  • a valve for controlling the flow of gas a piezo-electric element for supplying the electric energy for gas ignition, and a device for actuating the element when the valve is operated to release gas, the improvement comprising:
  • valve having an element that is rotated in a given direction from a gas-off position to a gas-on position, said valve element having a driver member which moves along a given path as said valve element is rotated between said positions;
  • said device for actuating the piezo-electric element including a pivotally mounted hammer, spring means operatively connected to the hammer for urging the hammer pivotally against the piezoelectric element, and an operating member connected to the hammer and positioned in said path to be contacted by and moved by the driver member as the latter moves in said given direction for thereupon pivot-ing the hammer away from the piezo-electric element and then releasing the hammer;
  • said hammer and said operating member being two arms of a lever, said lever having a slot intermediate said two arms, a pin projecting into said slot and forming a pivotal mounting for said lever, said spring means holdingsaid lever with one end of the slot in contact with the pin, said slot being aligned so that as said members come together when the driver member is moved in the reverse of said direction the force of the contact will move the lever in a direction such that the pin is spaced from said one end of the slot and that movement will cause the operating member to move out of said path.

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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)
  • Electrically Driven Valve-Operating Means (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Control Of Combustion (AREA)
US00193300A 1970-11-16 1971-10-28 Rotary valve and piezo-electric firing unit Expired - Lifetime US3771942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1026970A AT304819B (de) 1970-11-16 1970-11-16 Drehschalter für die gasförmiger oder vergasbarer Brennstoffe zu einem Brenner

Publications (1)

Publication Number Publication Date
US3771942A true US3771942A (en) 1973-11-13

Family

ID=3621171

Family Applications (1)

Application Number Title Priority Date Filing Date
US00193300A Expired - Lifetime US3771942A (en) 1970-11-16 1971-10-28 Rotary valve and piezo-electric firing unit

Country Status (9)

Country Link
US (1) US3771942A (fr)
JP (1) JPS5027792B1 (fr)
AT (1) AT304819B (fr)
BE (1) BE775296A (fr)
ES (1) ES196808Y (fr)
FR (1) FR2114834A5 (fr)
GB (1) GB1363083A (fr)
IT (1) IT940578B (fr)
NL (1) NL7114786A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963411A (en) * 1973-12-07 1976-06-15 Constructions Electriques R.V. Piezoelectric lighters notably for domestic appliance burners and the like
WO2008005127A2 (fr) * 2006-06-29 2008-01-10 Illinois Tool Works Inc. Commande d'interrupteur à tiges rotatif
US10330313B2 (en) * 2016-07-11 2019-06-25 Well Traveled Imports INC Twirling flame heater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434790A (en) * 1967-06-29 1969-03-25 Ngk Spark Plug Co Piezoelectric ignition device
US3676047A (en) * 1970-08-10 1972-07-11 Rinnai Kk Gas control valve means having a piezoelectric firing unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045140Y2 (fr) * 1971-05-28 1975-12-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434790A (en) * 1967-06-29 1969-03-25 Ngk Spark Plug Co Piezoelectric ignition device
US3676047A (en) * 1970-08-10 1972-07-11 Rinnai Kk Gas control valve means having a piezoelectric firing unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963411A (en) * 1973-12-07 1976-06-15 Constructions Electriques R.V. Piezoelectric lighters notably for domestic appliance burners and the like
WO2008005127A2 (fr) * 2006-06-29 2008-01-10 Illinois Tool Works Inc. Commande d'interrupteur à tiges rotatif
WO2008005127A3 (fr) * 2006-06-29 2008-04-17 Illinois Tool Works Commande d'interrupteur à tiges rotatif
US10330313B2 (en) * 2016-07-11 2019-06-25 Well Traveled Imports INC Twirling flame heater

Also Published As

Publication number Publication date
IT940578B (it) 1973-02-20
DE2142017B2 (de) 1975-10-23
JPS5027792B1 (fr) 1975-09-10
FR2114834A5 (fr) 1972-06-30
ES196808Y (es) 1975-08-16
DE2142017A1 (de) 1972-07-13
BE775296A (fr) 1972-03-01
NL7114786A (fr) 1972-05-18
ES196808U (es) 1975-03-16
AT304819B (de) 1973-01-25
GB1363083A (en) 1974-08-14

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