US3169570A - Starter apparatus for pulse jet burners - Google Patents

Starter apparatus for pulse jet burners Download PDF

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Publication number
US3169570A
US3169570A US323473A US32347363A US3169570A US 3169570 A US3169570 A US 3169570A US 323473 A US323473 A US 323473A US 32347363 A US32347363 A US 32347363A US 3169570 A US3169570 A US 3169570A
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Prior art keywords
valve
fuel
pressure
suction duct
mixture
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US323473A
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English (en)
Inventor
Haag Franz
Huber Ludwig
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Junkers and Co GmbH
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Junkers and Co GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C15/00—Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass

Definitions

  • the present invention relates to pulse jet burners in general, and more particularly to a novel starter apparatus for pulse jet burners.
  • a pulse jet burner is based on the principle that a mixture of fuel and oxygen which is admitted into a combustion chamber is ignited when the burner is started and that, following the explosion, a sound wave and a column of gases will travel down a resonance duct whereby a partial vacuum is induced in the suction duct to draw a new supply of mixture which is ignited in a fully automatic way by residual frame so that the explosions follow each other in rapid sequence.
  • variations in voltage may cause fluctuations in the percentage of oxygen in the mixture which is formed in the suction duct, and such fluctuations in the percentage of oxygen affect the percentage of fuel.
  • the calorific value of fuel is not uniform, the percentage of oxygen in the mixture must be adjusted accordingly.
  • the density and pressure of fuel may fluctuate within a rather wide range so that the mixture might not be ignited at the time it enters the combustion chamber of the pulse jet burner.
  • the mixture of fuel with oxygen fills the interior of the pulse jet burner including the combustion chamber and the customary sound absorbing chambers which communicate with suction and resonance ducts. If the ignition is successful in the next attempt, the mixture filling the interior of the pulse jet burner will produce excessive noise which is comparable to the noise of an automotive vehicle when its engine misfires.
  • Another obg ect of the invention is to provide a starter apparatus which automatically inactivates the igniter if the pulse jet burner fails to operate after one or more false starts so that the person in charge will become aware of and will be in a position to correct the defect.
  • a further object of the invention is to provide a starter apparatus which automatically shuts ofi the flow of fuel to the pulse jet burner if the igniter fails to initiate an explosion of the mixture in the combustion chamber.
  • a concomitant object of the invention is to provide a starter apparatus for use in a pulse jet burner whose suction duct receives air from a compressor and to construct the starter apparatus in such a way that the compressor is automatically arrested if the igniter fails to start the pulse jet burner.
  • Still another object of the invention is to provide a starter apparatus which is constructed and assembled in such a way that it automatically initiates the delivery of oxygen and fuel to the suction duct of a pulse jet burner in response to circulation of air or water which is to be heated by the burner.
  • An additional object of the invention is to provide an improved attachment consisting of a plurality of valves which constitutes a component part of the improved starter apparatus and which may be combined with many types of existing pulse jet burners without necessitating substantial modifications in the construction and/or mounting of such burners.
  • a further object of the invention is to provide a starter apparatus which is more reliable than all such starter apparatus of which we have knowledge at this time, which is especially suited for use in pulse jet burners in water heating systems, and in which all parts are read ly accessible for convenient inspection or replacement.
  • a concomitant object of the invention is to provide a starter apparatus which is constructed and assembled in such a way that the suction duct of the pulse jet burner cannot receive any fuel unless the compressor delivers a stream of oxygen or oxygen-containing air.
  • a pulse jet burner which compr' es a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products of combustion developing on combustion of such mixture in the combustion chamber, a fuel supply conduit connected with thsuction duct, and a starter apparatus which comprises a first valve including a first pressure responsive element movable between a plurality of positions, a first line connecting this valve with the fuel supply conduit so that the pressure of fuel may move the first pressure responsive element to a first position, a second line connecting the valve with the suction duct so that the pressure of the mixture in the suction duct may move the pressure responsive element to a second position, an electric starter switch operatively connected with the pressure responsive element to complete an el ctric circuit when the pressure responsive element is moved to its first position, a compressor comprising an electric motor connected in circuit with the starter switch to deliver oxygen to the suction duct when the starter switch completes
  • the second pressure responsive element is movable to a second position by the pressure of fuel in the supply conduit, and the starter apparatus further comprises a regulator valve provided in the fuel supply conduit upstream of the second valve and operatively connected with the second pressure responsive element to permit flow of fuel to the suction duet when the second pressure responsive element moves to its first positron.
  • the pulse jet burner comprises a combustion chamber it? including a suction duct 11 and a resonance duct 12.
  • the resonance duct discharges into a sound absorbing chamber 13 which is provided with a take-off pipe 14 serving to convey spent gases which develop on combustion of a fuel-o: ygen mixture delivered by the suction duct 11.
  • the suction duct has a first inlet 15 for oxygen or oxygencontaining air, and this inlet is controlled by a controlled valve 3.5a which is normally open.
  • the entire suction duct 11 is surrounded by a second sound absorbing chamber 17 which cooperates with the chamber 13 to reduce noise when the pulse jet burner is in actual use.
  • the chamber 17 commun cates with the pressure side of an air compressor here shown as a blower 32 whose suction side communicates with the atmosphere through a nipple
  • an air compressor here shown as a blower 32
  • suction side communicates with the atmosphere through a nipple
  • the inlet 16 communicates with a portion 19' of a main fuel supply conduit 19 which is connected to a suitable source of compressed gaseous fuel, not shown.
  • the conduit 1 accommodates a manually operable shutoff valve 2%) having a handle 29:; which may be grasped by hand.
  • the valve member of this shutoff valve is biased by a spring 2% and may be arrested in selected positions of axial adjustment to regulate the admission of fuel at the will of the operator.
  • the pulse jet burner serves to heat a stream of water which is admitted through a cold water pipe 23 and flows through a heating pipe 23 which is coiled around the heat-radiating parts of the burner (i.e., about the resonance duct 12 and combustion chamber 10).
  • the heating pipe 23 discharges into a hot Water pipe 24 which is provided with a faucet 25'.
  • the cold water pipe 21 contains a tapping device 22 similar to those disclosed, for example, in US. Patents Nos. 2,258,- 590 and 2,763,244.
  • This tapping device comprises a flexible diaphragm 26 which controls a safety valve 27 provided in the fuel supply conduit 19 downstream of the shutoff valve 2%.
  • valve member 27a of the safety valve 27 is connected with the diaphragm 26 so that any flexion of the diaphragm will cause corresponding adjustments in the position of the valve members 270.
  • This valve member is biased to scaling position by a resilient element here shown as a valve spring 271). If the liquid flowing in the pipes 21, 23, 24 is to be heated to elevated temperature, at least a portion of the heating pipe 23 may extend through the combustion chamber 19.
  • the housing of the valve 30 defines two compartments 36, the first of which communicates with the suction duct 11 through a line 5% and the second of which communicates with the fuel supply conduit 19 through a bypass line 31 whose intake is connected with the conduit 19 at a point downstream of the safety valve 27.
  • the compartment 36 accommodates a starter switch 37, here shown as a mercury switch, which is connected in circuit with the electric motor 32a of the blower 32 and with an electric igniter 33 which is a sparkplug extending into the interior of the combustion chamber 1t) and serving to ignite the mixture delivered by the suction duct 11.
  • the second pressure responsive valve 4i comprises a housing which defines two separate compartments 45.
  • the compartment 44 communicates with a line 41 leading to the pressure side of the blower 32.
  • the compartment 4-5 forms a passage for the flow of fuel from the ll main fuel supply conduit 19 (downstream of the safety valve 27) to the portion 19 which leads to the inlet 16.
  • This second pressure responsive valve 4t? further comprises a pressure responsive element here shown as a flexible diaphragm 43 which separates the compartment 44 from the compartment 45 and which is connected with the stem 42' of a regulator valve 42 serving to control the flow of fuel from the main conduit 19 into the compartment 45.
  • the regulator valve 42 is located downstream of the intake end of the bypass line 3-1.
  • the housings of the valves 30, 4% are coaxial and have a common wall 51, and another wall 52 of the valve 4% defines a seat 53 for the regulator valve 42.
  • the stem 42 is coaxial with the housings of the valves 3%, 4G.
  • the compartments 35, 3-6 of the valve 3 are separated by a pressure responsive element here shown as a flexible diaphragm 34 whose periphery is clamped to the housing of this valve.
  • the switch 37 is pivotable and normally rests on the median portion of the diaphragm 34 to be pivoted in a clockwise direction, as viewed in the drawings, when the pressure in compartment 35 rises so that the median portion of the diaphragm 34 is flexed upwardly.
  • the switch 37 is a mercury-containing tube which will complete the circuit of the blower motor 32a and igniter 33 when the diaphragm is flexed in a sense to reduce the volume of the compartment 36.
  • the line 50 is connected with the suction duct 11 at a point downstream of the inlets 15 and 16 so that pressure prevailing in the compartment 36 corresponds to the pressure of the mixture which is being delivered to the combustion chamber 10.
  • the pulse jet burner of our invention operates as follows:
  • the operator opens the shutoff valve 2% in the fuel supply conduit 1? and the faucet 25 in the hot water pipe 24.
  • a stream of water can flow from the cold water pipe 21 through the tapping device 22 whereby the stream flexes the diaphragm 26 and moves the valve member of the safety valve 27 away from its seat so that fuel entering through the conduit 19 may flow into a space 54.
  • the flow of fuel through this space 54 is controlled by the safety valve 27 and regulator valve 42.
  • the safety valve 27 opens automatically when the tapping device 22 is actuated by flowing water, i.e., there can be no flow of fuel into the suction duct 11 excepting when a stream of water circulates in the system including the pipes 21, 23 and 24.
  • the pressure of air flowing in the line 41 raises the pressure in the compartment 44- to flex the diaphragm 43 downwardly, as viewed in the drawings, whereby the regulator valve 42 moves away from the seat 53 and allows fuel to enter the conduit portion 123' which conveys the fuel to the inlet 1
  • the thus admitted stream of fuel is mixed with compressed air which is delivered through the inlet 15 and forms with such air a mixture which enters the combustion chamber 10 to be ignited by the igniter 33. This starts the operation of the pulse jet burner whereby the resulting explosion produces a pressure wave which expels combustion products through the resonance duct 12.
  • the suction duct 11 can receive fuel only if the blower 32 sends a stream of compressed air through the line 41 to open the regulator valve 42. In other words, no fuel will enter the suction duct 11 unless the blower 32 delivers oxygen through the inlet 15.
  • the control valves 15a, 16:: will be adjusted if the operator finds that the mixture in the duct 11 is unsatisfactory.
  • the pressure of air in the line 41 rises from Zero to a pressure which exceeds the pressure of fuel in the space 54 so that the blower 32 will be in a position to cause movement of the diaphragm 43 against the pressure prevailing in the space 54 and to open the regulator valve 42.
  • pressure Waves alternate with suction waves and the regulator valve 42 opens in a fully automatic way at such frequency that the suction duct receives fuel at requisite intervals.
  • the pulse jet burner fails to operate in the aforedescribed manner, for example, if the proportion of oxygen and fuel in the fixture entering the combustion chamber is such that the mixture is not ignited when the circuit of the igniter 33 is completed, static pressure of the non-combusted mixture which fills the combustion chamber 16 and the suction duct 11 is communicated through the line 5% so that the starter switch 37 returns to its idle position and opens the circuit of the blower motor 32a and igniter 33. In other words, regardless of Whether the mixture is ignited or not, the starter switch 37 will open the electric circuit and will arrest the blower 32. When the blower is arrested, pressure in the line 41 drops so that the diaphragm 43 returns the regulator valve 42 to sealing position in which this valve engages the seat 53 and seals the compartment 45 from the space 54. p
  • the blower 32 sends a stream of air through the line 41 to flex the diaphragm 43 downwardly and to move the regulator valve 42 away from the seat 53 whereby the main fuel supply conduit 19 communicates with thetconduit portion 1g and the latter admits into the suction duct 11 a stream of fuel which is mixed with air delivered by the blower 32 via chamber 17 and inlet 15. This mixture is ignited by the igniter 33 whereupon the pulse jet burner operates in a fully automatic way.
  • thermoelectric safety switch 56 which is connected in the circuit 55 of a current source 58, blower motor 32:: and igniter 33.
  • This thermoelectric safety switch 56 is of well known construction and is adjusted in such a way that it opens the circuit 55 if the julse jet burner fails to operate after a series of false starts, for example, after 68 consecutive completions of the circuit 55. This indicates to the operator that the burner cannot produce a satisfactory fuel-air mixture and that the system requires overhauling or adjustment (e.g., an adjustment of valves a, 16a).
  • the switch 56 serves as a safety device which prevents escape of fuel'even if the tapping device 22 permits fuel to flow into the space 54 and compartment 35.
  • the tapping device 22 and the pressure responsive switches are combined into a unitary attachment which may be secured to a pulse jet burna K? er.
  • a unitary attachment which may be secured to a pulse jet burna K? er.
  • Such construction has many advantages, particularly as regards savings in time for connecting or disconnecting the attachment from a burner, but is not absolutely necessary.
  • the valves 30, 40 may be bodily separated from each other in that the common wall 51 may be replaced by two separate walls.
  • compartment 45 need not serve as a passage for fuel into the conduit portion 19- because the outlet from the space 54 may be connected directly with the inlet of the conduit portion 19' as long as this outlet is controlled by the regulator valve 42 which in turn receives motion from the diaphragm 43.
  • the pressure responsive switches 30, 40 may be modified in a number of ways, for example, by replacing the diaphragms 34, 43 with other types of pressure responsive elements.
  • the valve disk of the regulator valve 42 could be accommodated in the compartment 45, Le, the seat 53 could be located at the upper side of the wall 52. This would necessitate replacing the line 41 by a line whose intake end would be connected with the suction side of the blower 32 so that pressure in the compartment 44 would be below atmospheric pressure as soon as the blower 32 is set in motion.
  • mercury switch 37 maybe replaced by other types of starter switches which are capable of completing an electric circuit in response to pressure of fuel in the valve 30.
  • sparkplug of the igniter 33 may be replaced by a glow plug or another type of means which is capable of igniting a fuel-oxygen mixture. All such modifications will be readily comprehended by men skilled in this art without necessitating additional illustrations.
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products developing on combustion of such mixture; a fuel supply conduit connected with said suction duct; a first valve including a pressure responsive element movable between two positions; a first line connecting said valve with said supply conduit so that the pressure of fuel may move said element to one of said positions; a second line connecting said valve with said suction duct so that the pressure of said mixture may move said element to the other position; an electric starter switch operatively connected with said pressure responsive element and operative to complete an electric circuit when said element is moved to said one position; compressor means comprising electric motor means connected in circuit with said starter switch for delivering oxygen into said suction duct in operative position of said switch; electric igniter means connected in circuit with said starter switch for igniting the mixture in said combustion chamber in operative position of said switch; a second valve provided in said supply conduit and comprising a second pressure responsive element movable between two positions
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products developing on combustion of such mixture; 21 fuel supply conduit connected with said suction duct; a first valve including a pressure responsive element movable between two positions; a first line connecting said valve with said supply conduit so that the pressure of fuel may move said element to one of said positions; a second line connecting said valve with said suction duct so that the pressure of said mixture may move said element to the other position; an electric starter switch operatively connected with said pressure responsive element and operative to complete an electric circuit when said element is moved to said one position; compressor means comprising electric motor means connected in circuit with said starter switch for delivering oxygen into said suction duct in operative position of said switch; electric igniter means connected in circuit with said starter switch for igniting the mixture in said combustion chamber in operative position of said switch; a second valve provided in said supply'conduit and comprising a second pressure responsive element movable between
  • said tapping device comprises a diaphragm which is flexed by fluid in said pipe means and wherein said safety valve comprises a valve member secured to said diaphragm and movable between an open and a sealing position, and resilient means arranged to bias said valve member to said sealing position.
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct .for discharging the products developing on combustion of such mixture; 21 fuel supply conduit connected with said suction duct; a first valve including a first pressure responsive element movable between two positions; a first line connecting said valve with said supply conduit so that the pressure of fuel may move said pressure responsive element to one of said positions; a second line connecting said valve with said suction duct so that the pressure of said mixture may move said pressure element to the other position; an electric switch operatively connected with said pressure responsive element and operative to complete an electric circuit when said element is moved to said one position; compressor means comprising electric motor means connected in circuit with 7 said switch for delivering oxygen into said suction duct in operative position of said switch; a second valve provided in said supply conduit and comprising a second pressure responsive element movable between two positions; a third line connecting said second valve with said compressor means to move said second element to one of said positions thereof in response
  • said first valve comprises a housing and wherein said first pressure responsive element is a flexible diaphragm dividing the interior of said housing into a first and second compartment respectively communicating with said first and second lines.
  • said second valve comprises a housing and wherein said second pressure responsive element is a flexible diaphragm dividing the interior of said housing into a pair of compartments one of which communicates with said third line and the other of which constitutes a passage in said fuel supply conduit, said fuel supply conduit having a first portion for delivering fuel to said passage and a second portion for delivering fuel from said passage to said suction duct, said regulator valve being arranged to control the flow of fuel from said first portion of said fuel supply conduit to said passage.
  • the housing of said second valve has an apertured wall defining a seat through which fuel may flow into said passage
  • said regulator valve comprising a valve member connected with said diaphragm and arranged to move into sealing engagement with said seat when said first portion of said fuel supply conduit delivers fuel to said passage and when said compressor means is idle so that fuel in said passage flexes said diaphragm in a direction to reduce the volume of said one compartment.
  • each of said first and second valves comprises a housing and wherein said housings have a common wall, each of said pressure responsive elements comprising a flexible diaphragm which divides the interior of the respective housing into a pair of compartments, said housings having a common axis and said regulator valve comprising a valve member reciprocable in the axial direction of said housings and a valve stem secured to the diaphragm of said second valve.
  • one compartment of said second valve constitutes a passage in which the fuel flows to said suction duct in response to opening of said regulator valve.
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products developing on combustion of such mixture; a fuel supply conduit connected with said suction duct; a first valve including a first pressure re sponsive element movable between two positions; a first line connecting said valve with said supply conduit so that the pressure of fuel may move said first element to one of said positions; a second line connecting said valve with said suction duct so that the pressure of said mixture may move said first element to the other position; an electric starter switch operatively connected with said first element and operative to complete an electric circuit when said first element is moved to said one position; compressor means comprising electric motor means connected in circuit with said starter switch for delivering oxygen into said suction duct in operative position of said starter switch; electric igniter means connected in circuit with said starter switch for igniting the mixture in said combustion chamber in operative position of said starter switch; a safety switch provided in and arranged to open said circuit
  • thermoelectric switch which opens said electric circuit in response to a predetermined number of movements of said starter switch to said operative position thereof.
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products developing on combustion of such mixture; a fuel supply conduit connected with said suction duct; a first valve including a first pressure responsive element movable between two positions; a first line connecting said valve with said supply conduit so that the pressure of fuel may move said first element to one of said positions; a second line connecting said valve with said suction duct so that the pressure of said mixture may move said first element to the other position; an electric starter switch operatively connected with said element and operative to complete an electric circuit when said first element is moved to said one position; compressor means comprising electric motor means connected in circuit with said switch for delivering oxygen into said suction duct in operative position of said switch; electric igniter means connected in circuit with said switch for igniting the mixture in said combustion chamber in operative position of said switch; a second valve provided in said supply conduit and comprising a second pressure responsive element movable between two positions
  • a combustion chamber including a suction duct arranged to form a mixture of fuel with oxygen and a resonance duct for discharging the products developing on combustion of such mixture; a fuel supply conduit connected with said suction duct; and a starting apparatus comprising a first valve including a first pressure responsive element movable between two positions, a first line connecting said valve with said supply conduit so that the pressure of fuel may move said first element to one of said positions, a second line connecting said valve with said suction duct so that the pressure of said mixture may move said first element to the other position, an electric starter switch operatively connected with said first element and operative to complete an electric circuit when said first element is moved to said one position, compressor means comprising electric motor means connected in circuit with said starter switch for delivering oxygen into said suction duct in operative position of said starter switch, electric igniter means connected in circuit with said starter switch for igniting the mixture in said combustion chamber in operative position of said starter switch, a second valve provided in said supply conduit and comprising
  • said igniter means comprise an electric sparkplug extending into said combustion chamber.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
US323473A 1962-11-15 1963-11-13 Starter apparatus for pulse jet burners Expired - Lifetime US3169570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ22660A DE1239052B (de) 1962-11-15 1962-11-15 Sicherheitsvorrichtung fuer die Brennstoff- und Luftzufuehrung zu einer Brenneranlage mit pulsierender Verbrennung

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US3169570A true US3169570A (en) 1965-02-16

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US323473A Expired - Lifetime US3169570A (en) 1962-11-15 1963-11-13 Starter apparatus for pulse jet burners

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US (1) US3169570A (de)
CH (1) CH418507A (de)
DE (1) DE1239052B (de)
GB (1) GB1063300A (de)
NL (1) NL300527A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298418A (en) * 1964-04-08 1967-01-17 Master Cons Inc Oil burner
US3792958A (en) * 1971-08-06 1974-02-19 Eberspaecher J Device for operating a combustion device, such as a space heater
US4078877A (en) * 1975-12-11 1978-03-14 Webasto-Werk W. Baier Gmbh & Co. Fuel feeding device for a heating unit, especially for vehicles
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4281982A (en) * 1980-02-19 1981-08-04 Institute Of Gas Technology Method and apparatus of heat-pulsed recuperation of energy
US4568264A (en) * 1983-01-14 1986-02-04 Lennox Industries, Inc. Combustion chamber construction
US4622003A (en) * 1983-10-13 1986-11-11 Motan Gesellschaft Mit Beschrankter Haftung Apparatus for dispensing active materials
US5403180A (en) * 1990-06-13 1995-04-04 Chato; John D. Pulsating combustors
US6325616B1 (en) 2000-04-03 2001-12-04 John D. Chato Pulsating combustion unit with interior having constant cross-section
US6464490B1 (en) 1998-08-31 2002-10-15 Clean Energy Combustion Systems, Inc. Circular pulsating combustors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911193B1 (de) * 1969-03-05 1970-09-10 Huber Dr Ing Ludwig Steuervorrichtung fuer ein gasbetriebenes Schwingbrennergeraet
SE372090B (de) * 1972-11-03 1974-12-09 J Graffman

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416413A (en) * 1889-12-03 Trustees
US2838102A (en) * 1954-08-28 1958-06-10 Junkers & Co Pulse jet burner system
US2962094A (en) * 1959-03-23 1960-11-29 Barber Mfg Company Automatic shut-off valve control for fuel burners

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628621C (de) * 1933-02-11 1936-04-08 Junkers & Co Einrichtung zur selbsttaetigen Regelung der Gaszufuhr zu einem Erhitzer
FR947944A (fr) * 1947-06-16 1949-07-18 Procédé et installation de régulation pour brûleur à gaz, brûleur réfractaire à la prise de feu à l'injecteur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416413A (en) * 1889-12-03 Trustees
US2838102A (en) * 1954-08-28 1958-06-10 Junkers & Co Pulse jet burner system
US2962094A (en) * 1959-03-23 1960-11-29 Barber Mfg Company Automatic shut-off valve control for fuel burners

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298418A (en) * 1964-04-08 1967-01-17 Master Cons Inc Oil burner
US3792958A (en) * 1971-08-06 1974-02-19 Eberspaecher J Device for operating a combustion device, such as a space heater
US4078877A (en) * 1975-12-11 1978-03-14 Webasto-Werk W. Baier Gmbh & Co. Fuel feeding device for a heating unit, especially for vehicles
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4281982A (en) * 1980-02-19 1981-08-04 Institute Of Gas Technology Method and apparatus of heat-pulsed recuperation of energy
US4568264A (en) * 1983-01-14 1986-02-04 Lennox Industries, Inc. Combustion chamber construction
US4622003A (en) * 1983-10-13 1986-11-11 Motan Gesellschaft Mit Beschrankter Haftung Apparatus for dispensing active materials
US5403180A (en) * 1990-06-13 1995-04-04 Chato; John D. Pulsating combustors
US6464490B1 (en) 1998-08-31 2002-10-15 Clean Energy Combustion Systems, Inc. Circular pulsating combustors
US6325616B1 (en) 2000-04-03 2001-12-04 John D. Chato Pulsating combustion unit with interior having constant cross-section

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Publication number Publication date
CH418507A (de) 1966-08-15
GB1063300A (en) 1967-03-30
NL300527A (de)
DE1239052B (de) 1967-04-20

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