US3348561A - Control apparatus for gas burners - Google Patents

Control apparatus for gas burners Download PDF

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US3348561A
US3348561A US46823965A US3348561A US 3348561 A US3348561 A US 3348561A US 46823965 A US46823965 A US 46823965A US 3348561 A US3348561 A US 3348561A
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Prior art keywords
valve
knob
slot
pilot
safety valve
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Priority to US46823965 priority Critical patent/US3348561A/en
Priority to GB2753666A priority patent/GB1151597A/en
Priority to DE19661526231 priority patent/DE1526231A1/de
Priority to BE683500D priority patent/BE683500A/xx
Priority to NL6609161A priority patent/NL6609161A/xx
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Publication of US3348561A publication Critical patent/US3348561A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1407—Combustion failure responsive fuel safety cut-off for burners
    • Y10T137/1516—Thermo-electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87056—With selective motion for plural valve actuator
    • Y10T137/87088—Reciprocation along and rotation about same axis

Definitions

  • This invention relates to control apparatus and more specifically to an improved fuel flow control valve.
  • the invention relates to an improved valve for controlling gaseous fuel and having means for precluding a particular sequence of operation of the valve which could result in an accumulation of gas and hence an unsafe condition at the burner controlled by the valve.
  • a manually operable valve generally having at least three angular positions, off, pilot and on and, in series with the manual valve, a safety valve which automatically closes should the pilot flame, at the burner controlled by the valve, be extinguished.
  • Various arrangements of this general type have been proposed and many are available on the market today.
  • these valves include a socalled safe lighting provision so that the safety valve can be reset only when the manual valve is in a closed position and so that the manual valve can be rotated to the on position only by releasing the means for opening the safety valve so that if the safety valve is not held open in response to a pilot flame, it will close and interrupt the flow of gas to the burner.
  • valves of this type the home owner or other person operating the valve may operate it in a manner, which causes a dangerous condition, which could result in an explosion.
  • This can be brought about by rotating the valve momentarily from an -on position, or a pilot position toward the OE position sufficiently far to extinguish the pilot flame (with the flame responsive means holding the safety'valve open) and then immediately rotating the valve toward its on position. Since there is always some time lag in the flame responsive device, it will hold the safety valve open for a period of time after the flame is extinguished.
  • U.S. Patent No. 3,099,994 issued to Putz et al. is directed to a gas valve which utilizes two axially movable disk valves, one of which is operated by a cam driven by a manual control member and the other a thermocouple safety valve.
  • the patent discloses a complicated locking arrangement which precludes the manual valve from being turned back on, once it is moved from on to .off, until the safety valve has closed.
  • My invention accomplishes the end result accomplished by the :Putz et al. patent but in a substantially simpler manner. Instead of latching the rotary valve so that it cannot be rotated until the safety valve is closed, I provide a means for operably disconnecting the manually operable knob from the rotary valve whenever the rotary valve is in its off position and the safety valve is open. It is recognized that, broadly, the idea of disconnecting a safety valve, such as a thermoelectrically operated safety valve, from a manual operator when the manual operator is rotated to an off position and the valve closure member is held open by the thermocouple operated device, is old in the prior art as disclosed in the Thomas Patent No. 2,988,098. Thomas utilizes a single valve closure member which acts as a safety valve in that it will be automatically closed if the flame at the burner is extinguished and as a manual valve in that it may be disconnected from the thermocouple operated armature to manually close it.
  • a safety valve such as a thermoelectrically operated safety valve
  • My invention is considered an improvement over the valves of Putz et al. and Thomas, discussed above. It provides the normally desirable features of a manually operable rotary valve which may be manually manipulated between a plurality of positions such as on, and o and which has the usual safety valve feature. In addition, it provides means for operably disconnecting the manual operator from the rotary valve to prevent rotation of the valve from an off or flame extinguishing position to a pilot or on position whenever the safety valve is open. The invention also may include the provision of an arrangement so that the manual operator is operably disconnected to preclude rotation of the manual valve from a pilot to an on position if the safety valve is closed.
  • my invention provides a valve which has all of the features generally found in a high quality gas control valve but adds another safety feature which precludes the occurrence of the unsafe condition discussed above.
  • FIGURE 1 discloses a horizontal cross-sectional view of a gas control valve constructed according to my invention.
  • FIGURE 2 is a fragmentary cross-sectional view taken generally along line 22 of FIGURE 1.
  • FIGURE 3 is a fragmentary cross-sectional view taken generally along line 3-3 of FIGURE 1.
  • FIGURE 4 is a fragmentary cross-sectional view taken generally along line 44 of FIGURE 1.
  • FIGURE 5 is a fragmentary plan view disclosing a manual operator for the valve.
  • FIGURE 6 is a fragmentary view disclosing portions of the-valve of- FIGURE 1 with certain portions thereof shown schematically for purposes of illustrating the oper-ation of the valve.
  • numeral 10 generally designates a gas valve with a main valve body 11 having an inlet port 12 and an outlet port 13.
  • a rotary plug valve 14 In the passage, between the inlet and outlet port, there is disclosed a rotary plug valve 14 and, in series therewith, a thermocouple operated safety valve 15.
  • Plug valve 14 includes a tapered body portion 16 disposed in a mating tapered opening 17 in the valve body and an upwardly extending hollow cylindrical portion 20 which will be discussed further hereinafter.
  • a valve seat 21 surrounding the opening to a cylindrical cavity 22 in the plug valve.
  • a main flow passage 23 Extending through the wall of the plug and intersecting cavity 22 is a main flow passage 23 which has connected thereto a relatively small pilot flow passage 24 (see FIGURE 2) which extends from passage 23 and around the periphery of the plug valve approximately Formed in body 11, and around the tapered opening 17 into which plug valve 14 fits, is a pilot outlet passage 25 and, spaced approximately 90 therefrom, a main outlet passage 13a which connects to outlet port 13.
  • valve closure member 26 Cooperable with valve seat 21 is a valve closure member 26 which forms a part of the safety valve structure 15.
  • Closure member 26 is connected by an appropriate stem 27 to an armature 28 located in a housing 30 which contains an electromagnet 31 which is connected by appropriate leads to a thermocouple 32 disposed to be heated by' the flame at a pilot burner (not shown) to 3 which fuel is controlled by the valve.
  • Housing 30 is fixed to a bottom plate 33 of the valve body by appropriate means, such as a nut 34.
  • Stem 27 is reciprocable back and forth through an opening in the housing and is sealed with respect thereto by appropriate means, such as a seal 35.
  • Armature 28 is connected to this stem in any appropriate manner, for example, as by the swivel connection disclosed in FIGURE 1.
  • Electromagnet 31 is of sufficient strength to hold the valve open in opposition to spring 36 when the valve is manually opened but is not of sul cient strength to move the safety valve from a closed to an open position.
  • valve stem 37 Connected to the upper side of safety valve closure member 26 is a further valve stem 37.
  • Stem 37 extends through chamber 22, upwardly through an axially extending opening 40 in portion 16 and through hollow portion 20 at the upper end of the plug valve.
  • opening 40 is a generally elongated rectangular shaped opening with stem 37 centered therein.
  • the plug valve is splined to stem 37 by means of a pair of laterally extending pins 37a and 37b extending from opposite sides of stem 37.
  • stem 37 is nonrotatable with respect to plug valve 14 but is axially moveable with respect thereto.
  • a cover plate 41 is attached to the to of body 11 by appropriate means, such as screws 42.
  • a manual control knob 44 which is a generally inverted cup-shaped member having an annular downwardly extending outer Wall 44a and a central cylindrical downwardly extending portion 44b which extends into hollow cylindrical portion 22 at the upper end of plug valve 14. Cylindrical portion 44b has a central opening 44c into which the upper end of stem 37 extends.
  • Downwardly extending cylindrical portion 44b is connected to'the upper end of stem 37 by means of a laterally extending connecting pin 50 rigidly fixed to one side of stem 37 and extending into a generally T-shaped connecting slot 51 in the wall of portion 44b.
  • This slot can be better understood by referring to FIGURE 4 and will be described further in connection with FIGURE 6.
  • the slot has a horizontal portion 51a extending approximately one-half of the way around the periphery of portion 44b. Intersecting one end of horizontal portion 51a is a vertical portion 51b of the slot.
  • connecting pin 50 and connecting slot 51 form a continuous unidirectional connection between knob 44 and stem 37 so that when knob 44 is rotated in one direction, it always carries stem 37 with it, but S that the connection between the two members in the opposite angular direction is disengageable and is dependent upon the axial position of pin 50 in vertical portion 51b of the slot.
  • a programming guide 52 Extending upward from cover 41, and secured thereto by appropriate means such as one of the screws 42, is a programming guide 52 which extends upwardly into the interior of knob 44 and has an end portion 52a which extends into a programming slot 53 formed in the inner surface of downwardly extending wall 44a of knob 44, A spring 54 urges knob 44 upwardly so that portion 52a of the guide normally engages the lower surface of the programming slot.
  • This programming guide and slot cooperate to provide a programming means so that the knob can be rotated from an elf toward an on position only by a particular sequence of manipulations which include both axial and rotative movement.
  • This programming arrangement will be described in greater detail in connection with the operation of the device wherein reference will be made to FIGURE 6.
  • FIGURE 5 discloses a to view of knob 44 in the position it occupies when the valve is in the position disclosed in FIGURE 1. It will be noted that the upper surface of knob 44 is marked with indicia indicating positions corresponding to on, pilo and off positions. This indicia cooperates with an arrow 55 or the like on the top of cover 41.
  • FIGURE 6 has the manual control knob 44 rolled flat and with connecting slot 51 and programming slot 53 both shown in a single plane so that the cooperation between these two slots and the cooperating connecting pin 50 and programming guide 52, respectively, can be understood.
  • knob 44 is shown in the off position, plug valve 14 is in a position so that both pilot passage 25 and main outlet passage 13a are closed off, and safety valve means 15 is closed since the pilot burner to which it responds would be extinguished.
  • spring 54 continuously urges knob 44 upwardly so that it assumes a vertical position dependent upon the abutment of programming guide 52 with programming slot 53.
  • end 52a of programming guide 52 abuts the bottom of a vertical portion 53a of the programming slot.
  • pin 50 is disposed in vertical portion 51b of slot 51 but centrally located therein so that it is aligned with horizontal portion 51a of the slot.
  • knob 44 In order to rotate knob 44 towards the pilot position, it is necessary to depress knob 44 so that guide 52 moves along a horizontal portion 53b of the programming sl-ot. When knob 44 is so depressed, it moves relative to stem 37 and pin 50 occupies the upper end of vertical portion 51b of the connecting slot.
  • knob 44 when knob 44 is rotated in a clockwise direction pin 50 is engaged by a surface 60 adjacent slot 51. Knob 44 may now be rotated until programming guide 52 reaches a vertical portion 53c of programming slot 53.
  • plug valve 14 is disposed in a position wherein main passage 23 aligns with pilot outlet passage 25.
  • Knob 44 is now depressed a substantial distance determined by the length of portion 530 in slot 53.
  • pin 50 is abutted by the surface of knob 44 above vertical portion 51b of the connecting slot and stem 37 is moved downwardly to reset safety valve 26 by holding armature 28 in engagement with electromagnet 31.
  • Gas is being supplied to the pilot burner and when this burner is ignited the thermocouple 32 is energized and, in turn, energizes electromagnet 31.
  • knob 44 When knob 44 is released spring 54 urges it upwardly to a position wherein programming guide 52 occupies a horizontal portion 53d of programming slot 53. Knob 44 can now be rotated further in the clockwise direction to a position where the on indication aligns with arrow 55. When knob 44 is so released and moves upwardly with respect to stem 37, it will again occupy the same position as it originally had, as shown in FIGURE 6. However, since safety valve 26 is held open, stem 37 and pin 50 occupy a lower position. Thus, pin 50 will be bottomed in vertical portion 51b of connecting slot 51. As knob 44 is rotated in a clockwise direction, a surface 61 adjacent slot 51 engages pin 50 and forms an operable connection between knob 44 and stem 37.
  • plug valve 14 is also rotated to its on position wherein main port 23 is aligned with outlet port 13a and pilot gas groove 24 aligns with pilot outlet passage 25 so that gas is supplied to both the pilot and the main outlets.
  • knob 44 is rotated to its off position so that plug 16 is rotated to interrupt the gas flow to the burner, the pilot flame will be extinguished.
  • the thermocouple it takes a finite time for the thermocouple to cool sufliciently so'that electromagnet 31 will become operably de-energized and release armature 28 so that safety valve 26 closes. This may take a matter of thirty to sixty seconds or more.
  • the plug valve could then be rotated back to the on position with the safety valve open but no flame actually existing at the burner so that a substantial amount of gas would accumulate before the safety valve closed.
  • My invention eliminates the possibility of this occurring since, when safety valve 26 is open, stem 37 is in its lowered position so that pin 50 is also lowered.
  • FIGURE 1 it will be seen that if safety valve 26 is open, pin 50 will occupy the lowermost end of the vertical portion of slot 51 when knob 44 is in its ,olf position. If knob 44 is then depressed to move it toward the pilot position, pin 50 will align with horizontal portion 51a of the connecting slot. Thus, when knob 44 is rotated toward the pilot position it simply rotates with respect to pin 50 and stem 37 and it is impossible to move'plug valve 14.
  • thermocouple has cooled sufficiently so that the safety valve closes, the valve can again be opened in the manner described previously, in other words with the safety valve closed, pin 50 will be disposed in the uppermost end of the vertical portion of the connecting slot when knob 44 is depressed so that the knob and stem are then operably connected.
  • knob 44 in order to bring this safety feature into play, it is not necessary that knob 44 be rotated all the way to the off position. In fact, it is only necessary that the knob be rotated in a counterclockwise direction from the pilot or on positions sufliciently so that guide 52 is disposed in portion 53b of the programming slot. Any time that the safety valve is open so that stem 37 and pin 50 occupy their lower axial positions and knob 44 is in an axial position so that programming guide 52 aligns with portion 53b of the slot, pin 50 is aligned with horizontal portion 51a of connecting slot 51 and rotation of knob 44 simply results in movement of the knob with respect to the pin and stem.
  • pin 50 When pro gramming guide 52 is aligned with portion 53d of the programming slot, pin 50 is'disposed in the lowermost end of vertical portion 51b of the connecting slot so that when knob 44 is rotated to the on position it carries with it the plug valve. If for some reason, when knob 44 is released after depressing it to perform the resetting function, the safety valve fails to remain open, pin 50' will be aligned with horizontal portion 51a of the connecting Slot when programming guide 52 is aligned with portion 53b of the programming slot. Thus, rotation of knob 44 will not result in any rotation of the plug valve since the knob and stem are Operably disconnected.
  • this invention provides an improved fuel valve with an important safety feature which precludes certain unsafe operation thereof. Operably disconnecting the manual control knob from the rotary valve when the valve is operated to a position where such an unsafe condition might occur, precludes damage to the valve should the operator attempt to force it as might be the case if the valve were mechanically latched.
  • the programming means as including a guide member attached to the body of the valve and slot in the manual control knob. It will be appreciated that, if desired, this arrangement may be reversed without departing from the invention.
  • the connecting means between the knob and the stem is preferably a slot in the knob and a pin extending thereinto from the stem, but this arrangement may also be reversed if desired without departing from the spirit of the invention.
  • the invention is considered to include arrangements wherein the knob is operably disconnected from the stem only when it is rotated to an absolute off position as well as to this preferred embodiment wherein the knob is operably disconnected at any time when it is rotated toward the off position from the pilot position.
  • off position or flame extinguishing position is used in a sense that it covers either of these arrangements. It is not essential that the valve include both a pilot and an on position and, as used in certain of the claims herein, the terms fuel-flow position, flame sustaining position and the like may include a position wherein only a pilot flow exists or only a main flow exits or wherein both pilot and main flow exists through the valve.
  • a fuel valve comprising: a body having a passage therethrough; safety valve means including a valve closure member in said passage and flame responsive means to hold said closure member open when it is otherwise opened; a rotary valve member in said passage in series with said safety valve closure member and rotatable between off, pilot and on positions; a manual control knob for rotating said rotary valve and for manually opening said safety valve closure member; programming means between said valve body and said knob and including a programming guide on one and a cooperating slot on the other, said programming means rendering said knob rotatable from said off position toward said pilot position only upon said knob being depressed a predetermined distance with respect to said body, permitting further depression of said knob to accomplish manual opening of said safety valve closure member only when said knob is in said pilot position, and permitting rotation of said knob from said pilot position to said on position only when said knob is retracted from said body a predetermined distance; a valve stem nonrotatably connected to said rotary valve member but axially movable with respect thereto and operably connected to said safety valve closure member; connecting means
  • a fuel valve comprising: a body having a passage therethrough; safety valve means including a valve closure member in said passage and flame responsive means to hold said closure member open when it is otherwise opened; a rotary valve member in said passage in series with said safety valve closure member and rotatable between off, pilot and on positions; a manual control knob for rotating said rotary valve; programming means between said valve body and said knob and including a programming guide on one and a cooperating slot on the other, said programming means rendering said knob rotatable from said off position toward said pilot position only upon said knob being axially moved a predetermined distance in a first direction with respect to said body, and permitting rotation of said knob from said pilot position to said on position only when said knob is axially moved a predetermined distance in the opposite direction; a valve stem nonrotatably connected to said rotary valve member but axially movable with respect thereto and operably connected to said safetyvalve closure member; and connecting means between said knob and said valve stem, said connecting means including a T-shaped connecting slot on one of said knob
  • a fuel valve comprising: a body having a passage therethrough; safety valve means including a valve closure member in said passage and flame responsive means to hold said closure member open when it is otherwise opened; a rotary valve member in said passage in series with said safety valve closure member and rotatable between off and on positions; a manual control knob for rotating said rotary valve; programming means between said valve body and said knob and including a programming guide on one and a cooperating slot on the other, said programming means rendering said knob rotatable from said off position toward said on position only upon said knob being moved axially a predetermined distance with respect to said body; a valve stem nonrotatably connected to said rotary valve member but axially movable with respect thereto and operably connected to said safety valve closure member; connecting means between said knob and said valve stem, said connecting means including a connecting slot on one of said knob or stem and a cooperating pin on the other, said slot including a horizontal portion intersected at one end by a vertical portion, said connecting pin being movably disposed in said slot, said
  • a fuel control valve comprising: a valve body having a flow passage therethrough; thermocouple operated safety valve means including a valve closure member in said passage and an electromagnet to hold said closure member'open when said magnet is energized and said closure member is otherwise opened; a rotary valve mem her in said passage in series with said safety valve and rotatable between off, pilot, and on positions; a manual control knob for rotating said rotary valve and for opening the safety valve; programming means intermediate said knob and said body and rendering said knob operable between off, pilot and on positions only by a fixed sequence of manipulations including both axial movement and angular rotation of said knob; and connecting means between said knob and said rotary valve and including means operably connected to said safety valve and axially movable between a first position when said safety valve is closed and a second position when said safety valve is open, said connecting means providing a continuous unidirectional connection between said knob and said rotary valve in the angular direction from the on position towards the pilot and off positions of said rotary valve but providing a connection therebetween
  • a fuel control valve comprising: a valve body having a flow passage therethrough; safety valve means including a valve closure member in said passage and a flame responsive means to hold saidclosure member open When it is otherwise manually opened; a rotary valve member in said passage in series with said safety valve and rotatable between off, and on positions; a manual control knob for rotating said rotary valve; programming means intermediate said knob and said body and rendering said knob operable between off and on positions only by a fixed sequence of manipulations including both axial movement and angular rotation of said knob; and connecting means between said knob and said rotary valve and including means operably connected to said safety valve and movable between a first position when said safety valve is closed and a second position when said safety valve is open, said connecting means providing a continuous unidirectional connection between said knob and said rotary valve in the angular direction from the on position towards the off position of said r0- tary valve but providing a connection therebetween in the opposite angular direction only when said knob and said connecting means occupy certain predetermined relative positions so that said
  • thermocouple operated safety valve means including a valve closure member in the passage and an electromagnet to hold the closure member open when the magnet is energized and the closure member is otherwise opened, a rotary valve member in the passage in series with the safety valve and rotatable between off, pilot, and on positions, and
  • a manual control knob for rotating the rotary valve and for opening the safety valve
  • the improvement comprising: connecting means between the knob and the rotary valve and including means providing a continuous untdirectional connection between the knob and the rotary valve in the angular direction from the on position towards the pilot and off positions of the rotary valve and providing a disengageable connection therebetween in the opposite angular direction
  • said connecting means including means operably connected to the safety valve and operable in response to the position of said safety valve to operably disengage the disengageable connection when the rotary valve is in the pilot position and the safety valve is closed and when the rotary, valve is m the off position or in a position between the off and pilot positions and the safety valve is open.
  • a gas valve of the type having a flow passage therethrough, a rotary valve disposed in said flow passage and movable between flame sustaining and flame extinguishing angular positions, manual means for moving the rotary valve between the angular positions, safety valve means disposed in the flow passage in series relationship with the rotary valve and movable between open and closed positions, safety valve operating means including means adapted to be controlled by a flame responsive device and operable thereby between a flame and a no flame condition, the operating means including means for holding the safety valve in an open position when the operating means is in its flame condition and the safety Valve is otherwise opened, the improvement comprising: means normally providing a driving connection between the manual operating means and the rotary valve and responsive to the angular position of the rotary valve and the condition of the safety valve operating means to operably disconnect the manual operating means from the rotary valve when the rotary valve is in a flame extinguishing position and the safety valve operating means is in its flame condition.
  • a fuel valve comprising: a valve body having inlet and outlet ports connected by a passage through said body; a rotary control valve disposed in said passage and movable between flame sustaining and flame extinguishing angular positions; a manual control member for rotating said rotary valve; a safety valve mounted in series relation with said rotary valve in said passage and movable between open and closed positions; operating means for said safety valve and including means responsive to the presence of flame at a burner controlled by the fuel valve to hold the safety valve open when it is otherwise opened; and means operably disconnecting said manual control member from said rotary valve when said rotary valve is disposed in a flame extinguishing position and said safety valve is open.
  • thermocouple operated safety valve disposed in a passage through the valve body in series with a rotary valve rotatable between disengageable connecting means between the manual knob for rotating the valve
  • disengageable connecting means between the manual knob and the valve and including means operably connected to said thermocouple operated safety valve and responsive to the position thereof to operably disengage the manual knob and the valve when the valve is disposed in its off position or in an angular position between its off and pilot positions when the safety valve is open.
  • a control device comprising a valve body having an inlet and at least one outlet, a wall having an aperture therethrough and located between said inlet and said out let, a rotary valve cooperable with said wall aperture to control fuel flow to a burner through said outlet, safety means movable between a first position and a second positron for controlling fuel flow to the burner, means responsive to a flame for holding said safety means in its second position to permit fuel flow to the burner only when a flame is present at the burner, operating means having limited relative movement with respect to said rotary valve and being movable between off and fuel-flow positions, said ope-rating means including connecting means which permits rotary movement between said operating means and said valve in one relative position therebetween and preventing rotary movement therebetween in other relative positions thereof, programming means including means movable with said operating means and means on said valve body, said programming means operating simultaneously with said connecting means to enable said operating means to move said valve from its off position to its fuel-flow position when said safety means is in its first position and to move said safety means from said first position to
  • a control device comprsing a valve body having an inlet and at least one outlet, a wall having an aperture therethrough located between said inlet and said outlet, a rotary valve cooperable with said wall aperture to control fuel flow to a pilot burner through said outlet, safety means movable between a first position and a second position for controlling fuel flow to a main burner, means responsive to a flame for holding said safety means in its second position to permit fuel flow to the main burner only when a flame is present at the pilot burner, operating means having limited relative movement with respect to said rotary valve and being movable between off, pilot and on positions, said operating means including connecting means which permits rotary movement between said operatingmeans and said valve in one relative position thereof and preventing rotary movement therebetween in other relative positions thereof, programming means including means movable with said operating means and means on said valve body cooperable therewith and operating simultaneously with said connecting means to enable said operating means to move said valve from its off position to its pilot position when said safety means is in its first position and to move said safety means from said first position to said second position
  • a fuel flow control device having a valve body with an inlet and at least one outlet and a wall with an aperture therethrough located between said inlet and said outlet, the combination comprising: a rotary valve cooperable with said wall aperture to control fuel flow to a pilot burner through said outlet, safety means movable between a first position and a second position for controlling fuel flow to a main burner, meansresponsive to a flame for holding said safety means in its second position to permit fuel flow to the main burner only when a flame is present at the pilot burner, operating means axially displaceable with respect to said rotary valve and movable between off, pilot and on positions, said operating means including lost-motion connecting means which permits relative rotary movement between said operating means and said valve in one axial position therebetween and preventing rotary movement therebetween in other axial positions thereof, programming means including cooperating means on said operating means and on said valve body operating simultaneously with said lost-motion connecting means to enable said operating means to move said valve from its off position to its pilot position when said safety means is in its first position and to move said safety

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
US46823965 1965-06-30 1965-06-30 Control apparatus for gas burners Expired - Lifetime US3348561A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US46823965 US3348561A (en) 1965-06-30 1965-06-30 Control apparatus for gas burners
GB2753666A GB1151597A (en) 1965-06-30 1966-06-20 Improvements in and relating to Fluid Flow Control Valves
DE19661526231 DE1526231A1 (de) 1965-06-30 1966-06-28 Von Hand betaetigbares Brenngas-Drehventil
BE683500D BE683500A (en, 2012) 1965-06-30 1966-06-30
NL6609161A NL6609161A (en, 2012) 1965-06-30 1966-06-30

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US46823965 US3348561A (en) 1965-06-30 1965-06-30 Control apparatus for gas burners

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US3348561A true US3348561A (en) 1967-10-24

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US46823965 Expired - Lifetime US3348561A (en) 1965-06-30 1965-06-30 Control apparatus for gas burners

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US (1) US3348561A (en, 2012)
BE (1) BE683500A (en, 2012)
DE (1) DE1526231A1 (en, 2012)
GB (1) GB1151597A (en, 2012)
NL (1) NL6609161A (en, 2012)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460568A (en) * 1966-12-19 1969-08-12 Agustin A Busquets Mixing and diverter water valve
US3461894A (en) * 1965-10-18 1969-08-19 Honeywell Inc Manually resettable safety valve
US3682188A (en) * 1970-05-21 1972-08-08 Robertshaw Controls Co Latching assembly for a control device to prevent operation thereof prior to electromagnet safety release
US3762442A (en) * 1972-01-14 1973-10-02 Parker Hannifin Corp Directional control valve with portative electromagnetic latch mechanism
DE2605128A1 (de) * 1975-02-13 1976-09-02 Honeywell Inc Gasarmatur
US4241759A (en) * 1978-08-28 1980-12-30 Sloan Valve Company Slow closing faucet
US4784180A (en) * 1987-02-24 1988-11-15 Knebel & Rottger Gmbh & Co. Sanitary mixing valve assembly
US5280802A (en) * 1992-11-16 1994-01-25 Comuzie Jr Franklin J Gas appliance detection apparatus
US5367829A (en) * 1993-06-23 1994-11-29 Safety 1St, Inc. Security gate
US5622200A (en) * 1994-04-14 1997-04-22 Mertik Maxitrol Gmbh & Co., Kg Thermo-electric safety igniter with reignition lock
US6192913B1 (en) * 1998-07-16 2001-02-27 Desa International Gas valve for pilotless gas burner
US20020056479A1 (en) * 1999-08-09 2002-05-16 Kroupe Kevin D. Surge prevention device
US20030056839A1 (en) * 1999-08-09 2003-03-27 Kroupa Kevin D. Surge prevention device
US20030121555A1 (en) * 2002-01-03 2003-07-03 Kroupa Kevin D. Surge prevention device
US6957661B1 (en) 2003-03-19 2005-10-25 Harsco Technologies Corporation Valve with pressurization rate reduction device
WO2006131454A3 (de) * 2005-06-07 2007-03-29 Bsh Bosch Siemens Hausgeraete Gashahn
US20110226355A1 (en) * 2010-03-22 2011-09-22 Sit La Precisa S.P.A. Con Socio Unico Device for controlling the supply of a combustible gas to a burner apparatus
CN115507218A (zh) * 2022-11-08 2022-12-23 江苏大昌燃气设备有限公司 一种燃气阀的防护结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB771524A (en) * 1954-09-10 1957-04-03 Bosch Gmbh Robert Improvements in or relating to gas-heated appliances
US2799454A (en) * 1952-12-12 1957-07-16 Gen Controls Co Manual valve-operating means
US2988098A (en) * 1959-12-08 1961-06-13 Vaillant Joh Kg Manually operated gas controllers
US3099994A (en) * 1960-02-11 1963-08-06 Vaillant Joh Kg Thermoelectric ignition safety device
US3303866A (en) * 1964-11-04 1967-02-14 Itt Valve with interlocking gas cock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799454A (en) * 1952-12-12 1957-07-16 Gen Controls Co Manual valve-operating means
GB771524A (en) * 1954-09-10 1957-04-03 Bosch Gmbh Robert Improvements in or relating to gas-heated appliances
US2988098A (en) * 1959-12-08 1961-06-13 Vaillant Joh Kg Manually operated gas controllers
US3099994A (en) * 1960-02-11 1963-08-06 Vaillant Joh Kg Thermoelectric ignition safety device
US3303866A (en) * 1964-11-04 1967-02-14 Itt Valve with interlocking gas cock

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461894A (en) * 1965-10-18 1969-08-19 Honeywell Inc Manually resettable safety valve
US3460568A (en) * 1966-12-19 1969-08-12 Agustin A Busquets Mixing and diverter water valve
US3682188A (en) * 1970-05-21 1972-08-08 Robertshaw Controls Co Latching assembly for a control device to prevent operation thereof prior to electromagnet safety release
US3762442A (en) * 1972-01-14 1973-10-02 Parker Hannifin Corp Directional control valve with portative electromagnetic latch mechanism
DE2605128A1 (de) * 1975-02-13 1976-09-02 Honeywell Inc Gasarmatur
US4241759A (en) * 1978-08-28 1980-12-30 Sloan Valve Company Slow closing faucet
US4784180A (en) * 1987-02-24 1988-11-15 Knebel & Rottger Gmbh & Co. Sanitary mixing valve assembly
US5280802A (en) * 1992-11-16 1994-01-25 Comuzie Jr Franklin J Gas appliance detection apparatus
US5367829A (en) * 1993-06-23 1994-11-29 Safety 1St, Inc. Security gate
US5622200A (en) * 1994-04-14 1997-04-22 Mertik Maxitrol Gmbh & Co., Kg Thermo-electric safety igniter with reignition lock
US6192913B1 (en) * 1998-07-16 2001-02-27 Desa International Gas valve for pilotless gas burner
US6622743B1 (en) * 1999-08-09 2003-09-23 Allied Healthcare Products, Inc. Surge prevention device
US7530365B2 (en) 1999-08-09 2009-05-12 Allied Healthcare Products, Inc. Surge prevention device
US20030056839A1 (en) * 1999-08-09 2003-03-27 Kroupa Kevin D. Surge prevention device
US20020056479A1 (en) * 1999-08-09 2002-05-16 Kroupe Kevin D. Surge prevention device
US6901962B2 (en) 1999-08-09 2005-06-07 Allied Healthcare Products, Inc. Surge prevention device
US20070227601A1 (en) * 1999-08-09 2007-10-04 Kroupa Kevin D Surge prevention device
US20050189022A1 (en) * 1999-08-09 2005-09-01 Kroupa Kevin D. Surge prevention device
US7174909B2 (en) 1999-08-09 2007-02-13 Allied Healthcare Products, Inc. Surge prevention device
US20060180217A9 (en) * 1999-08-09 2006-08-17 Kroupa Kevin D Surge prevention device
US7128080B2 (en) 1999-08-09 2006-10-31 Allied Healthcare Products, Inc. Surge prevention device
US6910504B2 (en) 2002-01-03 2005-06-28 Allied Healthcare Products, Inc. Surge prevention device
US20030121555A1 (en) * 2002-01-03 2003-07-03 Kroupa Kevin D. Surge prevention device
US6957661B1 (en) 2003-03-19 2005-10-25 Harsco Technologies Corporation Valve with pressurization rate reduction device
WO2006131454A3 (de) * 2005-06-07 2007-03-29 Bsh Bosch Siemens Hausgeraete Gashahn
CN101189476B (zh) * 2005-06-07 2011-01-26 Bsh博施及西门子家用器具有限公司 燃气栓
US20110226355A1 (en) * 2010-03-22 2011-09-22 Sit La Precisa S.P.A. Con Socio Unico Device for controlling the supply of a combustible gas to a burner apparatus
US8479759B2 (en) * 2010-03-22 2013-07-09 Sit La Precisa S.P.A. Con Socio Unico Device for controlling the supply of a combustible gas to a burner apparatus
CN115507218A (zh) * 2022-11-08 2022-12-23 江苏大昌燃气设备有限公司 一种燃气阀的防护结构
CN115507218B (zh) * 2022-11-08 2023-07-28 江苏大昌燃气设备有限公司 一种燃气阀的防护结构

Also Published As

Publication number Publication date
GB1151597A (en) 1969-05-07
DE1526231A1 (de) 1970-01-29
NL6609161A (en, 2012) 1967-01-02
BE683500A (en, 2012) 1966-12-01

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