US3537468A - Device for supplying liquid fuel to burners - Google Patents

Device for supplying liquid fuel to burners Download PDF

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Publication number
US3537468A
US3537468A US664144A US3537468DA US3537468A US 3537468 A US3537468 A US 3537468A US 664144 A US664144 A US 664144A US 3537468D A US3537468D A US 3537468DA US 3537468 A US3537468 A US 3537468A
Authority
US
United States
Prior art keywords
fuel
pressure
delivery
delivery conduit
chamber
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
US664144A
Other languages
English (en)
Inventor
Reiner Friedl
Robert Von Linde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Webasto Werk W Baier GmbH and Co
Original Assignee
Webasto Werk W Baier GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto Werk W Baier GmbH and Co filed Critical Webasto Werk W Baier GmbH and Co
Application granted granted Critical
Publication of US3537468A publication Critical patent/US3537468A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2284—Fuel supply
    • 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
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2409—With counter-balancing pressure feedback to the modulating device
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2521—Flow comparison or differential response
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7759—Responsive to change in rate of fluid flow
    • Y10T137/776—Control by pressures across flow line valve
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • 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
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87643—With condition responsive valve

Definitions

  • the invention relates to a device for supplying liquid fuel to the burner of a heating appliance used in vehicles, such device may be equipped with a high-pressure blower for irnpelling the air for combustion, into the delivery conduit of which blower a fuel pipe opens at a point where a low-pressure zone is generated (e.g., by means of a venturi tube), and the fuel pipe may be fitted with a proportioning nozzle to effect fuel dosage.
  • the object of the present invention is to provide an apparatus which, when operated with high-pressure blowers, allows the use of different types of blowers, and avoids breakdowns in case of interruptions of the fuel supply, so that no extra safety precautions are required in this respect.
  • a dosing device divided by a membrane into an admission and a delivery chamber, the admission chamber being situated upstreams of the nozzle when viewed in the direction of fuel flow, and the membrane controlling a valve located between the admission chamber and a fuel tank, and wherein the delivery chamber is connected with the delivery conduit of the high-pressure blower.
  • a pump connected between the membranecontrolled valve of the dosing device and the fuel-storage vessel, whose delivery automatically ceases when a predetermined pressure is reached in the pump delivery pipe, for example an electromagnetically operated diaphragm pump as described in the U.S. Pat. No. 3,267,987.
  • this feature is advantageousby virtue of the resulting savings in driving energy and is also preferable for constructional reasons.
  • the important condition is to have the fuel flowing under pressure to the admission chamber of the dosing device, so as to enable the inflowing fuel to influence the pressure conditions in the delivery chamber.
  • connection of the delivery chamber of the dosing device with the delivery pipe of the high-pressure blower is provided between the latter and the inlet orifice ofthe fuel pipe.
  • BRlEF DESCRlPTlON OF THE DRAWlNGS HO. 1 is an elevated front view, partially in cutaway section, ofa fuel supply device embodying the invention.
  • a dosing device 5 To a burner 2 comprising an ignition device 1 fuel is fed from a fuel storage container 3 through an electromagnetically operated and spring-controlled diaphragm pump i, a dosing device 5 and a delivery pipe 6.
  • the dosing device 5 in question comprises a'venturi tube 7, a proportioning nozzle 8, a membrane 9 and a controlled fuel valve ill.
  • the control membrane 9 divides the cavity of the dosing device 55 into an admission chamber ill and a delivery chamber 2.
  • the control ofvalve ll) is effected by a push rod 14, having a groove 13.
  • the air for combustion is supplied to the humor 2 by it high" pressure blower lo driven by on electric motor l5, said blower 16 being connected with the air inlet l? olthc burner I2 by Way of the delivery conduit 6. the venturi tube 7 and that portion of the delivery conduit, referenced 18, which is situated upstream of the venturi tube.
  • the venturi tube 7 reduces the pressure in the admission chamber ill of the dosing device 5, which results in a downward movement of the membrane 9 and thus the opening of valve l0. Since, owing to the presence of the pressure equalizing conduit 19 extending from the delivery chamber 12 and the delivery conduit 18, no very large pressure differences occur between the admission chamber and the delivery chamber, the fuel entering under pressure through valve id into the admission chamber ill effects a certain equalization of pressure and in consequence there is a return movement of the membrane 9, which again closes or almost closes the valve it). This intensities the low pressure created by the venturi tube 7 in the admission chamber ll, which again leads to a downward movement of membrane 9, and the consequent increased opening of the valve 10.
  • valve 10 In operation, while the membrane executes a hardly visible fluttering motion, a prearranged open position of valve 10 is established which, for a suitable coordination of proportioning nozzle 8, venturi section 7 and the output of the high-pressure blower 16, corresponds to the desiredrate of fuel admission.
  • the pressure equalizing conduit 19 may alternatively be connected with the portion 6 of the delivery conduit, located downstream of the venturi tube 7; in general, the invention is in no way restricted to the details herein described and illustrated, but may be modified in different ways in application of the principles described.
  • a device for supplying liquid fuel to burners comprising:
  • an air supply means to supply combustion air at a high pressure to said burner inlet
  • a fuel supply means to supply liquid fuel to said burner inlet
  • a fuel dosing means to control the flow of fuel in said fuel delivery conduit;
  • said fuel dosing means including a control valve means, an admission chamber, a delivery chamber, a flexible mernbrane means separating said admission chamber from said delivery chamber, and by its movement operating said control valve means, and a fuel proportioning nozzle;
  • control valve means, admission chamber, and proportioning nozzle being integral parts of said fuel supply conduit, so that the'liquid fuel passes thcrethrough in succession;
  • said air delivery conduit including pressure control means to control the pressure within said admission chamber thereby controlling the degree of opening of said control valve means;
  • said fuel supply means including fuel pump means arranged upstream of said fuel dosing means and adapted to supply liquid fuel to said fuel delivery conduit at a substantially constant pressure and at a variable flow as determined by said control valve means.
  • a device for supplying liquid fuel to burners comprising:
  • an air supply means to supply combustion air at a high pres sure to said burner inlet
  • a fuel supply means to supply liquid fuel to said burner inlet
  • a fuel dosing means to control the flow of fuel in said fuel delivery conduit
  • said fuel dosing means including a control valve means, an
  • admission chamber a delivery chamber, a flexible membrane means separating said admission chamber from said delivery chamber, and by its movement operating said control valve means, and a fuel proportioning nozzle;
  • control valve means, admission chamber, and proportioning nozzle being integral parts of said fuel supply conduit, so that the liquid fuel passes therethrough a successivemen;
  • said air delivery conduit including pressure control means to control the pressure within said admission chamber, thereby controlling the degree of opening of said control valve means;
  • said pressure control means includes a vcnturi-section hav ing a constricted portion within said air delivery conduit and a communicating conduit between said constricted portion and said admission chamber of said fuel dosing means, so as to vary the pressure within said admission chamber in accordance with the speed of air flow in said delivery conduit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)
US664144A 1966-11-10 1967-08-29 Device for supplying liquid fuel to burners Expired - Lifetime US3537468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1038866A AT265046B (de) 1966-11-10 1966-11-10 Einrichtung zur Versorgung des Brenners eines Fahrzeugheizgerätes mit flüssigem Brennstoff

Publications (1)

Publication Number Publication Date
US3537468A true US3537468A (en) 1970-11-03

Family

ID=3621996

Family Applications (1)

Application Number Title Priority Date Filing Date
US664144A Expired - Lifetime US3537468A (en) 1966-11-10 1967-08-29 Device for supplying liquid fuel to burners

Country Status (6)

Country Link
US (1) US3537468A (enrdf_load_stackoverflow)
AT (1) AT265046B (enrdf_load_stackoverflow)
DE (1) DE1551754C2 (enrdf_load_stackoverflow)
ES (1) ES344959A1 (enrdf_load_stackoverflow)
GB (1) GB1125219A (enrdf_load_stackoverflow)
SE (1) SE328796B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101879852A (zh) * 2010-07-22 2010-11-10 奇瑞汽车股份有限公司 一种电动汽车用燃油加热器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025283C2 (de) * 1980-07-04 1985-04-18 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Zusatzheizvorrichtung für Kraftfahrzeuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962094A (en) * 1959-03-23 1960-11-29 Barber Mfg Company Automatic shut-off valve control for fuel burners
DE1220545B (de) * 1959-08-22 1966-07-07 Robert Von Linde Dipl Ing Zerstaeubungsbrenner
DE1201937B (de) * 1960-03-09 1965-09-30 Webasto Werk Baier Kg W Brenngemischfuehrung an mit fluessigem Brennstoff betriebenen Heizvorrichtungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101879852A (zh) * 2010-07-22 2010-11-10 奇瑞汽车股份有限公司 一种电动汽车用燃油加热器

Also Published As

Publication number Publication date
ES344959A1 (es) 1968-11-01
AT265046B (de) 1968-09-25
DE1551754C2 (de) 1982-04-15
GB1125219A (en) 1968-08-28
SE328796B (enrdf_load_stackoverflow) 1970-09-21
DE1551754A1 (de) 1970-03-26

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