US3859794A - Device for governing the temperature of a heater head of a hot gas engine - Google Patents

Device for governing the temperature of a heater head of a hot gas engine Download PDF

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Publication number
US3859794A
US3859794A US356775A US35677573A US3859794A US 3859794 A US3859794 A US 3859794A US 356775 A US356775 A US 356775A US 35677573 A US35677573 A US 35677573A US 3859794 A US3859794 A US 3859794A
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United States
Prior art keywords
blower
flow
rate
fuel
air
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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
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US356775A
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English (en)
Inventor
Sven Anders Samuel Hakansson
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United Stirling AB and Co
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United Stirling AB and Co
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Assigned to UNITED STIRLING AB., A CORP. OF SWEDEN reassignment UNITED STIRLING AB., A CORP. OF SWEDEN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KOMMANDIT BOLAGET UNITED STIRLING (SWEDEN) AB & CO.
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/045—Controlling
    • F02G1/047—Controlling by varying the heating or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines

Definitions

  • SHEET 2 OF 2 DEVICE FOR GOVERNING THE TEMPERATURE OF A HEATER HEAD OF A HOT GAS ENGINE This invention relates to a device for governing the temperature of a heater head of a hot gas engine comprising a temperature-responsive element giving signals in accordance with the temperature of the heater head, a servo-motor governed by said signals and being connected to regulating means connected to a combustion air blower and governing the rate of delivery of combustion air from said blower, and means responsive to the rate of flow of combustion air from the blower being connected to a fuel-control valve for regulating the flow of fuel for combustion with the air delivered by said blower.
  • the object of the present invention is to provide an improved device of the above type ensuring a reliable operation and a quick response to changes in engine output causing little or no detrimental influence upon the exhaust emission of the engine, i.e., it should ensure the right ratio between air and fuel at any engine load.
  • said means responsive to the rate of flow of combustion air comprises a vane movably arranged in said flow and offering constant resistance against said air flow while being moved in the direction of said air flow in proportion to the air flow, the fuel control valve being of such known type that the rate of fuel delivery is a direct function of the displacement of a part of the fuel-control valve, and a lever transmitting movements to this part from the said vane.
  • FIG. 1 schematically shows a hot gas engine provided with a device according to the invention
  • FIG. 2 schematically another embodiment of the invention.
  • FIG. 3 a view from above of the embodiment of FIG. 2.
  • a hot gas engine has a housing 1 and a heater head 2 which is heated by a burner 3.
  • the temperature prevailing at the heater head 2 is measured by a temperatureresponsive element 4 giving signals to an amplifier 5 energizing a motor 6 connected to a choke valve 7 mounted in an air inlet duct 8 of a centrifugal blower 9 driven by a pulley 10 mounted on the engine output shaft.
  • a disc-shaped vane 11 is supported at one end of a two-armed lever 12, the other end of which lever contacts a governing stem of a fuel delivery valve 13. Fuel is delivered from the valve 13 to the burner 3 at a rate which is a direct function of the displacement of the stem of the valve 13 by the lever 12.
  • the air delivered by the blower 9 is passed to the combustion chamber of the hot gas engine through a duct 14, and the rate of flow will cause a movement of the disc-shaped vane 11 which is a direct function of the rate of flow of this air.
  • the device shown in FIG. 1 will operate as follows:
  • the temperature affecting the temperature-responsive element 4 will immediately change.
  • a corresponding signal from the element 4, through the amplifier 5 and motor 6 will cause a closing movement of the choke valve 7, or conversely a falling temperature will cause an opening movement of the choke valve 7.
  • the device described will operate independently of the engine load and of the system for governing the engine load. Thus if the engine load is kept constant, but the engine is running more slowly at a corresponding greater torque this will initially cause a lower speed of the blower 9. Consequently the amount of air delivered will decrease and so will the rate of fuel supply. However, this will cause a decrease of the temperature of the heater head and in turn cause an opening of the choke valve 7 and a corresponding higher rate of fuel supply.
  • the device shown in FIGS. 2 and 3 differs from that of FIG. 1 therein that the choke valve 7 has been arranged at the delivery side of the blower 9 at a location where a return conduit 15 is branched off from the duct 14 and connected to the suction side of the blower 9.
  • the vane 11 has been arranged at the suction side of the'blower 9 near the air intake.
  • the drive connection between the engine I and the blower 9 is established by a belt drive in which the pulleys each consists of two in the axial direction relatively movable discs leaving a V-shaped opening between them for holding the belt.
  • the pulleys e.g. the pulley 10 the two discs are influenced in the direc' tion towards each other by a spring in a manner known per se not shown.
  • the other pulley 16 consists of two discs the axial distance between which is determined by a centrifugally operated device responsive to the rotational speed. Even this element is known in the art and will not be described and shown.
  • a signal from the element 4 caused by a decrease in temperature of the heater head 2 will cause such movement of the valve 7 that the connection between the delivery side of the blower 9 and the duct 14 will open. Simultaneously the connection between the delivery side of the blower 9 and the return conduit 15 will close. This will cause an increase of air flow around the vane 11 and thus an increase in supply of air and fuel to the burner of the engine.
  • the advantage of this arrangement is that the blower 9 will consume less power at reduced delivery rates.
  • the transmission between the engine output shaft and the blower may be designed so that at low engine speeds e.g. during starting-up the blower 9 will be able to deliver sufficient amounts of air. Thus any extra blowers for providing combustion air during starting-up will not be necessary.
  • a device for governing the temperature of a heater head of a hot gas engine having a combustion chamber comprising in combination a temperature-responsive element giving signals in accordance with the temperature of the heater head, a servo-system governed by said signals, regulating means including a combustion air blower governing the rate of delivery of combustion air from said blower operable by said servo-system, and means responsive to the rate of flow of combustion air from the blower including a fuel-control valve for regulating the flow of fuel for combustion with the air delivered by said blower, wherein said means responsive to the rate of flow of combustion air comprises a vane movably arranged in said flow to offer constant resistance against said air flow and to move in the direction of said air flow in proportion to the rate of flow and wherein the fuel control valve being of such known type that the rate of fuel delivery is a direct function of the displacement of a part of the fuel-control valve with a lever transmitting movements to this part from the said vane.
  • a device characterized in that said blower is driven by the hot gas engine.
  • a device characterized in that the transmission between the hot gas engine and the blower has a variable ratio causing comparatively higher blower speeds at low engine speeds.
  • combustion air flow regulating means comprises a three way valve governing the rate of flow of air delivery of the blower, a by-pass leading'to the suction side of the blower and a delivery duct leading to the combustion chamber of the hot gas engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Combustion (AREA)
  • Air-Conditioning For Vehicles (AREA)
US356775A 1972-05-05 1973-05-03 Device for governing the temperature of a heater head of a hot gas engine Expired - Lifetime US3859794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2098672 1972-05-05

Publications (1)

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US3859794A true US3859794A (en) 1975-01-14

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US356775A Expired - Lifetime US3859794A (en) 1972-05-05 1973-05-03 Device for governing the temperature of a heater head of a hot gas engine

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US (1) US3859794A (enrdf_load_stackoverflow)
JP (1) JPS522442B2 (enrdf_load_stackoverflow)
DE (1) DE2322606A1 (enrdf_load_stackoverflow)
GB (1) GB1332767A (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020634A (en) * 1976-05-05 1977-05-03 Ford Motor Company Viscous blower drive
US4041698A (en) * 1975-06-03 1977-08-16 Kommanditbolaget United Stirling (Sweden) Ab & Co. External combustion engine with exhaust gas recirculation of constant mass flow rate
US4075844A (en) * 1975-07-07 1978-02-28 U.S. Philips Corporation Hot-gas reciprocating engine having controlled coupling of a combustion air fan
US4345426A (en) * 1980-03-27 1982-08-24 Egnell Rolf A Device for burning fuel with air
US4457133A (en) * 1981-07-29 1984-07-03 United Stirling Ab Method of governing the working gas temperature of a solar heated hot gas engine
US4768341A (en) * 1983-12-07 1988-09-06 Aisin Seiki Kabushiki Kaisha Temperature control system for stirling engine
WO2001065099A3 (en) * 2000-03-02 2002-04-18 New Power Concept Llc Stirling engine thermal system improvements
US20080105532A1 (en) * 2002-11-13 2008-05-08 Deka Products Limited Partnership Liquid Pumps with Hermetically Sealed Motor Rotors
US20110147194A1 (en) * 2008-08-15 2011-06-23 Deka Products Limited Partnership Water vending apparatus
US8006511B2 (en) 2007-06-07 2011-08-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8069676B2 (en) 2002-11-13 2011-12-06 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8511105B2 (en) 2002-11-13 2013-08-20 Deka Products Limited Partnership Water vending apparatus
US11826681B2 (en) 2006-06-30 2023-11-28 Deka Products Limited Partneship Water vapor distillation apparatus, method and system
US11885760B2 (en) 2012-07-27 2024-01-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US11884555B2 (en) 2007-06-07 2024-01-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2525111C2 (de) * 1975-06-05 1985-04-11 United Stirling AB, Malmö Verfahren zum Betreiben einer Brennkraftmaschine mit äußerer Verbrennung sowie Vorrichtung zur Durchführung des Verfahrens
US4067191A (en) * 1975-10-10 1978-01-10 Forenade Fabriksverken System for supplying fuel and combustion air to an external combustion engine
JPS547660A (en) * 1977-06-20 1979-01-20 Toshiba Corp Heat exchanger
JPS5877145A (ja) * 1981-10-30 1983-05-10 Aisin Seiki Co Ltd スタ−リング機関用燃焼制御装置
JPS6148278U (enrdf_load_stackoverflow) * 1984-08-27 1986-04-01
JPS61110890A (ja) * 1984-11-02 1986-05-29 Nippon Telegr & Teleph Corp <Ntt> 吸放熱用カ−テンウオ−ル
JPS61128583U (enrdf_load_stackoverflow) * 1985-01-30 1986-08-12
GB0328292D0 (en) 2003-12-05 2004-01-07 Microgen Energy Ltd A stirling engine assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611234A (en) * 1947-06-18 1952-09-23 Hartford Nat Bank & Trust Co Control for engines employing a pressure fluid medium
US3397533A (en) * 1966-10-07 1968-08-20 Gen Motors Corp Hot gas engine control system
US3782120A (en) * 1971-03-04 1974-01-01 Philips Corp Thermodynamic reciprocating machine with temperature-controlled fuel supply to burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611234A (en) * 1947-06-18 1952-09-23 Hartford Nat Bank & Trust Co Control for engines employing a pressure fluid medium
US3397533A (en) * 1966-10-07 1968-08-20 Gen Motors Corp Hot gas engine control system
US3782120A (en) * 1971-03-04 1974-01-01 Philips Corp Thermodynamic reciprocating machine with temperature-controlled fuel supply to burner

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041698A (en) * 1975-06-03 1977-08-16 Kommanditbolaget United Stirling (Sweden) Ab & Co. External combustion engine with exhaust gas recirculation of constant mass flow rate
US4075844A (en) * 1975-07-07 1978-02-28 U.S. Philips Corporation Hot-gas reciprocating engine having controlled coupling of a combustion air fan
US4020634A (en) * 1976-05-05 1977-05-03 Ford Motor Company Viscous blower drive
US4345426A (en) * 1980-03-27 1982-08-24 Egnell Rolf A Device for burning fuel with air
US4457133A (en) * 1981-07-29 1984-07-03 United Stirling Ab Method of governing the working gas temperature of a solar heated hot gas engine
US4768341A (en) * 1983-12-07 1988-09-06 Aisin Seiki Kabushiki Kaisha Temperature control system for stirling engine
US6381958B1 (en) 1997-07-15 2002-05-07 New Power Concepts Llc Stirling engine thermal system improvements
EP1674705A3 (en) * 2000-03-02 2010-02-24 New Power Concepts LLC Stirling engine thermal system improvements
WO2001065099A3 (en) * 2000-03-02 2002-04-18 New Power Concept Llc Stirling engine thermal system improvements
US8511105B2 (en) 2002-11-13 2013-08-20 Deka Products Limited Partnership Water vending apparatus
US8069676B2 (en) 2002-11-13 2011-12-06 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8282790B2 (en) 2002-11-13 2012-10-09 Deka Products Limited Partnership Liquid pumps with hermetically sealed motor rotors
US20080105532A1 (en) * 2002-11-13 2008-05-08 Deka Products Limited Partnership Liquid Pumps with Hermetically Sealed Motor Rotors
US11826681B2 (en) 2006-06-30 2023-11-28 Deka Products Limited Partneship Water vapor distillation apparatus, method and system
US8006511B2 (en) 2007-06-07 2011-08-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US11884555B2 (en) 2007-06-07 2024-01-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US20110147194A1 (en) * 2008-08-15 2011-06-23 Deka Products Limited Partnership Water vending apparatus
US8359877B2 (en) 2008-08-15 2013-01-29 Deka Products Limited Partnership Water vending apparatus
US11285399B2 (en) 2008-08-15 2022-03-29 Deka Products Limited Partnership Water vending apparatus
US11885760B2 (en) 2012-07-27 2024-01-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system

Also Published As

Publication number Publication date
JPS4954742A (enrdf_load_stackoverflow) 1974-05-28
GB1332767A (en) 1973-10-03
DE2322606A1 (de) 1973-11-15
JPS522442B2 (enrdf_load_stackoverflow) 1977-01-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: UNITED STIRLING AB., BOX 856 S-201 80 MALMO, SWEDE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KOMMANDIT BOLAGET UNITED STIRLING (SWEDEN) AB & CO.;REEL/FRAME:004106/0501

Effective date: 19821027