US3921401A - Hot gas machine and control device for varying the power thereof - Google Patents

Hot gas machine and control device for varying the power thereof Download PDF

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Publication number
US3921401A
US3921401A US466711A US46671174A US3921401A US 3921401 A US3921401 A US 3921401A US 466711 A US466711 A US 466711A US 46671174 A US46671174 A US 46671174A US 3921401 A US3921401 A US 3921401A
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United States
Prior art keywords
working space
storage container
inlet
fluid
outlet
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Expired - Lifetime
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US466711A
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English (en)
Inventor
Jacobus Hubertus Abrahams
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US Philips Corp
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US Philips Corp
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Publication date
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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
    • F02G1/05—Controlling by varying the rate of flow or quantity of the working gas

Definitions

  • ABSTRACT [30] Foreign Application Priority Data
  • a hot-gas engine with a power control device compris- May 21, 1973 Netherlands 7307041 ing a compreSsor having an inlet Selectively connectable either to the engines working space outlet or to a 52 U.S. c1.
  • 60/521 Working fluid Storage Container While the compres- 51 1m. 01.
  • F01B 29/10 SOYS Outlet is Selectively conflectable either the [58] Field of Search 60/517, 527, 522, 524, working Space inlet or to the Storage Container- 60/52l 3 Claims, 5 Drawing Figures U.S. Patent N0v.25, 1975 Sheet10f2 3,921,401
  • the invention relates to a hot-gas reciprocating apparatus provided with a device for controlling the amount by weight of working fluid in a working space of the apparatus.
  • Known devices of this type comprise a storage container for working fluid and a compressor for said fluid, with the storage container being connectable via a first conduit to an outlet of the working space, which outlet includes a first non-return valve, and via a second conduit to an inlet of the working space, which inlet includes a second non-return valve.
  • hot-gas reciprocating apparatus is to be understood herein to mean hot-gas reciprocating engines, cold-gas refrigerators and heat pumps.
  • working spaces of these apparatus the working fluid is compressed, when it is contained mainly in a part of the working space, that is the compression space then the fluid is transferred via a regenerator to the expansion space where it is expanded, and finally it is returned via theregenerator to the compression space, so completing the cycle.
  • the compression and expansion spaces have different mean temperatures in operation.
  • the power thereof can be varied dueto variation of the mean pressure level of the working fluid in the working space.
  • working fluid is withdrawn from the working space'via the first conduit and pressed into the storage container, which is constructed as a high-pressure container, by an external compressor included in this conduit.
  • Working fluid is delivered to the working space from the high-pressure storage container via the second conduit by opening a valve included. in this conduit.
  • thecompressor may be located in the apparatus.
  • the internal compressor mayform an integral part of the apparatus, as is described in Netherlands Patent Application No.
  • the working fluid sucked by the compressor from the working space is already at a comparatively high temperature, which also contributes to a high final compression temperature.
  • These conditions adversely affect the useful life of the com pressor, in particular the useful life of the seals, which usually are made of a synthetic material, and of the inlet and outlet valves.
  • the first conduit When the pressure level in the apparatus is to be reduced. the first conduit is opened and working fluid LII flows to the storage container, which in this embodiment is a low-pressure storage container.
  • the compressor in the second conduit may have a comparatively low compression ratio.
  • the low-pressure storage container is comparatively large, which is a disadvantage in particular when hot-gas reciprocating engines are to be accommodated in vehicles.
  • the compressor coupled to the engine shaft claims a significant part of the power during the entire period of power increase.
  • a hot-gas reciprocating apparatus is characterized in that the compressor inlet is connected to a first conduit and via this conduit can selectively be connected either to the working space outlet or to the storage container while the compressor outlet is connected to the second conduit and via this conduit can selectively be connected either to the working space inlet or to the storage container.
  • This provides a construction in which a storage container of medium size and a compressor having an acceptable pressure ratio can be used while a sudden demand for more power can largely be met immediately.
  • reference numeral 1 denotes a cylinder of a hot-gas reciprocating engine.
  • a piston 2 and a displacer 3 are reciprocable with a relative phase difference.
  • the piston and the displacer are coupled to a driving means, not shown.
  • the piston 2 and the lower surface of the displacer 3 vary the volume of a compression space 4; the displacer 3 by its upper surface varies the volume of an expansion space 5.
  • These two spaces communicate with one another via a cooler 6, a regenerator 7 and a heater 8.
  • a burner 9 supplies heat to the heater 8.
  • the compression space 4 and the expansion space 5 together constitute the working space of the hot-gas reciprocating engine, with a device 10 for controlling the amount by weight of working fluid in this working space being connected to the engine.
  • the device 10 comprises a storage container 11 for working fluid and a compressor 12 having an inlet 12a and an outlet 12b.
  • the storage container 11 is connected to an outlet 15 of the working space via a first conduit 13 including a valve 14.
  • the outlet 15 includes a non-return valve 16 which prevents flow of working fluid from the conduit 13 to the compression space 4.
  • the storage container 11 is connected to an inlet 19 of the working space via a second conduit 17 including a valve 18.
  • the inlet 19 includes a nonreturn valve 20 which opens towards the working space.
  • the compressor inlet 12a is connected via the valve 14 to the first conduit 13 and can be connected via this valve and this conduit either to the working space outlet 15 or to the storage container 11.
  • the compressor outlet 12b is connected via the valve 18 to the second conduit 17 and can be connected via this valve and this conduit either to the working space inlet 19 or to the storage container 11.
  • valve 18 When working fluid is to be supplied to the compression space 4 in order to increase the power output of the engine the valve 18 is set to the position shown in FIG. 2a. Working fluid then flows from the storage container through the conduit 17 and the non-return valve 20 directly to the compression space 4. At the instant at which the pressures in the storage container 11 and the conduit 17 have become equal the valves 14 and 18 are set to the position shown in FIG. 2b. The compressor 12 then sucks working fluid from the storage container 11 via the valve 14 and presses it into the com pression space 4 via the valve 18 and the conduit 17.
  • FIG. 2b For supplying working fluid in the initial stage, as an alternative the path shown in FIG. 2b may be used instead of that shown in FIG. 2a.
  • valves 14 and 18 are set to the positions shown in FIG. 2c.
  • Working fluid from the motor then flows to the storage container 11 via the non-return valve 16, the conduit 13 and the valve 14.
  • the valves are set to the positions shown in FIG. 2d.
  • the compressor 12 will suck working fluid from the conduit 13 and the compression space 4 to press it into the storage container 11 via the valve 18.
  • the pressures in the storagecontainer 11 and the conduit 13 may be equalized via the path shown in FIG. 2d instead of the path shown in FIG. 2c.
  • a hot gas apparatus including reciprocating compression and displacer pistons defining a variablevolume working space for working fluid
  • a device for controlling the amount by weight of working fluid in said working space comprising: a storage container for containing a quantity of said working fluid, a compressor for said fluid including inlet and outlet means thereof, one-way inlet and outlet valves operable with said working space, a first conduit for communicating said fluid between a first set of three elements, namely said working space outlet valve, said compressor inlet and said storage container, third valve means for selectively inter-connecting two of said three elements, a second conduit for communicating said fluid between a second set of three elements, namely said working space inlet valve, said compressor outlet, and said storage container, and fourth valve means for selectively interconnecting two of said three elements of said second set, whereby fluid can be transferred to said compressor in
  • a device for controlling the amount by weight of working fluid in said working space comprising: a storage container for containing a quantity of said working fluid, a compressor for said fluid including inlet and outlet means thereof, one-way inlet and outlet valves operable with said working space, a first conduit for communicating said fluid between a first set of three elements, namely said working space outlet valve, said compressor inlet and said storage container, third valve means for selectively inter-connecting two of said three elements, a second conduit for communicating said fluid between a second set of three elements, namely said working space inlet valve, said compressor outlet, and said storage container, and fourth valve means for selectively interconnecting two of said three elements of said second set, whereby fluid can be transferred to said compressor inlet from either the working space outlet valve or the storage container, and from the compressor outlet to either the storage container or the working space inlet valve.
  • Apparatus according to claim 2 wherein said working space comprises compression and expansion spaces, and said inlet and outlet valves communicate with said compression space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US466711A 1973-05-21 1974-05-03 Hot gas machine and control device for varying the power thereof Expired - Lifetime US3921401A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7307041.A NL155632B (nl) 1973-05-21 1973-05-21 Heetgaszuigermachine, voorzien van een inrichting voor het regelen van de gewichtshoeveelheid in een werkruimte aanwezig werkmedium.

Publications (1)

Publication Number Publication Date
US3921401A true US3921401A (en) 1975-11-25

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ID=19818900

Family Applications (1)

Application Number Title Priority Date Filing Date
US466711A Expired - Lifetime US3921401A (en) 1973-05-21 1974-05-03 Hot gas machine and control device for varying the power thereof

Country Status (8)

Country Link
US (1) US3921401A (xx)
JP (1) JPS5238181B2 (xx)
CA (1) CA1007871A (xx)
DE (1) DE2422150C3 (xx)
FR (1) FR2230867B1 (xx)
GB (1) GB1473584A (xx)
NL (1) NL155632B (xx)
SE (1) SE405146B (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319595U (xx) * 1976-07-28 1978-02-20
JPS58167082U (ja) * 1982-04-28 1983-11-07 東洋科学株式会社 アイスクリ−ムの包装

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992536A (en) * 1953-08-05 1961-07-18 Orson A Carnahan External combustion gas engine
US3546877A (en) * 1967-12-01 1970-12-15 Philips Corp Hot-gas piston engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992536A (en) * 1953-08-05 1961-07-18 Orson A Carnahan External combustion gas engine
US3546877A (en) * 1967-12-01 1970-12-15 Philips Corp Hot-gas piston engine

Also Published As

Publication number Publication date
DE2422150B2 (de) 1977-09-15
CA1007871A (en) 1977-04-05
SE405146B (sv) 1978-11-20
DE2422150A1 (de) 1974-12-12
FR2230867A1 (xx) 1974-12-20
DE2422150C3 (de) 1978-05-11
GB1473584A (en) 1977-05-18
FR2230867B1 (xx) 1977-06-24
NL7307041A (xx) 1974-11-25
JPS5042240A (xx) 1975-04-17
JPS5238181B2 (xx) 1977-09-27
NL155632B (nl) 1978-01-16

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