EP0805941B1 - Heat and cold-generating machine - Google Patents

Heat and cold-generating machine Download PDF

Info

Publication number
EP0805941B1
EP0805941B1 EP96900320A EP96900320A EP0805941B1 EP 0805941 B1 EP0805941 B1 EP 0805941B1 EP 96900320 A EP96900320 A EP 96900320A EP 96900320 A EP96900320 A EP 96900320A EP 0805941 B1 EP0805941 B1 EP 0805941B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
cold
regenerator
bypass
heating
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
EP96900320A
Other languages
German (de)
French (fr)
Other versions
EP0805941A1 (en
Inventor
Klaus Heikrodt
Thomas Bernd
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.)
Robert Bosch GmbH
Viessmann Werke GmbH and Co KG
Original Assignee
Robert Bosch GmbH
Viessmann Werke GmbH and Co KG
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 Robert Bosch GmbH, Viessmann Werke GmbH and Co KG filed Critical Robert Bosch GmbH
Publication of EP0805941A1 publication Critical patent/EP0805941A1/en
Application granted granted Critical
Publication of EP0805941B1 publication Critical patent/EP0805941B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/14Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point

Definitions

  • the invention relates to a working according to a regenerative gas cycle process Heating and cooling machine with at least two pistons, the minimum three process rooms, each with at least one heat exchanger and at least one regenerator connected in series with this separate from each other.
  • the invention has for its object one after a regenerative gas cycle process to create working heating and cooling machine in which the Risk of freezing of the cold heat exchanger with design and control technology is simply eliminated in an energetically meaningful manner.
  • the solution to this problem by the invention is characterized in that that at least one of the cold process room assigned Regenerators to change the cold heat exchange circuit amount of heat transferred between process gas and environment with at least a bypass containing a control valve is provided.
  • the inventive formation of a bypass to at least one of the regenerators assigned to the cold heat exchanger is activated the bypass valve of icing on the air heat exchanger is limited in time opened so that the process gas in this bypassed bypass Regenerator no heat is removed and in this way the in the machine arranged cold heat exchangers through the from the warm process room amount of heat coming to a temperature above freezing is brought, with which the air heat exchanger is de-iced at the same time. Also in the event of a failure of the circulation pump in the one belonging to the cold heat exchanger In this way, the cycle becomes active even when the machine is running freezing of the cold heat exchanger avoided.
  • the bypass line is in Formed a through opening in the regenerator, the two Ends are closed during normal operation of the machine. This results in a dead space-free design of this regenerator.
  • bypass line is passed through closed a plunger, which is countered by an electromagnet Force of a return spring is movable.
  • the heating and cooling machine shown schematically in Figure 1 includes a pressure-tight housing 1, in which a hot piston 2 and a cold piston 3 are arranged linearly movable.
  • the hot piston 2 limits a hot working volume 4, to which heat is supplied, for example by a gas-heated one Combustion chamber 5.
  • the cold piston 3 limits a cold working volume 6.
  • Both pistons 2 and 3 limit a warm working volume 7.
  • a gear 8 is provided, which is connected to the cold via a hollow piston rod 9 Piston 3 and another piston rod 10 with the hot piston 2 connected is.
  • a regenerator 11 or 12 is arranged.
  • the warm working volume 7 is also assigned a warm heat exchanger 14, which is connected in series with the regenerator 11 and as well this is flowed through by the process gas. From this warm heat exchanger 13 is heated in the closed circuit via a circulation pump 13a a heat exchanger designed as a heater 14, for example.
  • the cold working volume 6 is also in series with the regenerator 12 assigned cold heat exchanger 15 through which process gas flows, the one with an air heat exchanger 16 in a closed circuit is arranged.
  • a circulation pump 15a is located in this circuit.
  • the heating and cooling machine is the one assigned to the cold working volume 6
  • Regenerator 12 is provided with a bypass 17, in which a bypass valve 17a is arranged. In normal operation, this bypass valve 17a is closed, see above that the bypass 17 has no effect on the after a regenerative gas cycle process working heating and cooling machine.
  • the bypass valve is also to be eliminated if the circulation pump 15a fails 17a opened at least for a limited time.
  • the process gas is due the lower flow resistance, the regenerator 12 through the Bypass bypass 17 so that the process gas in the regenerator 12 no heat is withdrawn. Since the cold heat exchanger 15 is connected in series to the regenerator 12 is switched, the cold heat exchanger 15 by the from the warm Working volume 7 coming amount of heat at a temperature above the Freezing point brought or held.
  • FIG. 2 shows an embodiment of the regenerator 12 in one Longitudinal section.
  • the regenerator 12 stands with the cold working volume 6 of the machine via an annular channel 18 and is in series switched to the cold heat exchanger 15, part of which is also in Figure 2 is shown.
  • the part of the regenerator 12 shown in FIG. 2 is further provided with a through hole 12a through a plunger 19 is closable. In the closed position, the plunger 19 fills the through opening 12a of regenerator 12 acting as a bypass, see above that there is no dead space in the normal operation of the machine due to the bypass.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PCT No. PCT/EP96/00134 Sec. 371 Date Jul. 24, 1997 Sec. 102(e) Date Jul. 24, 1997 PCT Filed Jan. 13, 1996 PCT Pub. No. WO96/23182 PCT Pub. Date Aug. 1, 1998A hot and cold engine operating based on a regenerative gas cyclical process, with at least two pistons (2, 3), which separate at least three processing chambers (4, 6, 7) with an in-line arrangement of respectively at least one heat exchanger (13, 15) and at least one regenerator (11, 12) arranged in series with the heat exchanger. In order to eliminate the danger of freezing for the cold heat exchanger (15) and thus the air heat exchanger (16), at least one of the regenerators (12) assigned to the cold processing chamber (6) has a bypass (17) with a control valve (17a).

Description

Die Erfindung betrifft eine nach einem regenerativen Gaskreisprozeß arbeitende Wärme- und Kältemaschine mit mindestens zwei Kolben, die mindestens drei Prozeßräume unter Zwischenschaltung jeweils mindestens eines Wärmetauschers und mindestens eines mit diesem in Reihe geschalteten Regenerators voneinander trennen.The invention relates to a working according to a regenerative gas cycle process Heating and cooling machine with at least two pistons, the minimum three process rooms, each with at least one heat exchanger and at least one regenerator connected in series with this separate from each other.

Nach einem regenerativen Gaskreisprozeß, beispielsweise nach dem Stirling- oder Vuilleumier-Kreisprozeß arbeitende Wärme- und Kältemaschinen sind seit langer Zeit bekannt, beispielsweise aus der GB-PS 136 195. Derartige Maschinen haben zwei in einem druckdichten Gehäuse linear bewegliche Kolben, die gemeinsam ein warmes Arbeitsvolumen begrenzen und von denen der eine Kolben im Gehäuse ein heißes, mit Wärme beaufschlagtes Arbeitsvolumen und der andere Kolben ein kaltes Arbeitsvolumen begrenzt, wobei die drei Arbeitsvolumina unter Zwischenschaltung von Regeneratoren und Wärmeübertragern miteinander verbunden sind und ein Antrieb und/oder eine Steuerung für die Kolben vorgesehen ist.After a regenerative gas cycle process, for example after the Stirling or Vuilleumier cycle heating and cooling machines have been known for a long time, for example from GB-PS 136 195. Such machines have two pistons that move linearly in a pressure-tight housing, which together limit a warm work volume and of which one Piston in the housing has a hot, heated working volume and the other piston limits a cold working volume, the three working volumes with the interposition of regenerators and heat exchangers are interconnected and a drive and / or a controller for the Piston is provided.

Trotz der unbestreitbaren Vorteile der nach einem regenerativen Gaskreisprozeß arbeitenden Wärme- und Kältemaschinen haben diese bisher keinen Eingang in die Praxis gefunden, und zwar hauptsächlich wegen konstruktiver Schwierigkeiten, die die Realisierung der theoretischen Vorteile derartiger Maschinen in der Praxis bisher verhinderten.Despite the undeniable advantages of having a regenerative gas cycle working heating and cooling machines have so far no entrance found in practice, mainly because of constructive Difficulties in realizing the theoretical advantages of such machines prevented in practice so far.

Bei den nach einem regenerativen Gaskreisprozeß arbeitenden Wärme- und Kältemaschinen, die für die Heizung und Klimatisierung von Gebäuden und Fahrzeugen eingesetzt und mit einem von der atmosphärischen Luft beaufschlagten, als Wärmequelle betriebenen Wärmeübertrager ausgestattet sind, besteht die Gefahr, daß bei Lufttemperaturen um den Gefrierpunkt und bei hoher Luftfeuchtigkeit der Luftwärmetauscher einfriert. In diesem Fall erfolgt durch den weiteren Betrieb der Maschine auch ein Einfrieren des kalten Wärmetauschers der Maschine. Diese Einfriergefahr besteht auch dann, wenn Störungen im kalten Kreislauf der Maschine auftreten, zum Beispiel durch Ausfall der Umwälzpumpe.When working on a regenerative gas cycle process heat and Chillers used for heating and air conditioning buildings and Vehicles used and with an atmospheric air are equipped as heat sources operated heat exchangers, there is a risk that at air temperatures around freezing and at high air humidity of the air heat exchanger freezes. In this case as the machine continues to operate, the cold heat exchanger also freezes the machine. This risk of freezing also exists when there are faults occur in the cold cycle of the machine, for example due to failure the circulation pump.

Um diese Gefahr zu beseitigen, ist es bekannt, den Luftwärmetauscher abzutauen bzw. vor dem Einfrieren zu beheizen. Dies erfordert aufwendige Heizeinrichtungen, die nicht nur energetisch unerwünscht sind, sondern auch aufwendige Steuerungen erfordern, die normalerweise auch ein Abschalten der gesamten Maschine bewirken.To eliminate this danger, it is known to defrost the air heat exchanger or to be heated before freezing. This requires complex heating devices which are not only energetically undesirable, but also complex Controls that normally also require a shutdown of the effect entire machine.

Der Erfindung liegt die Aufgabe zugrunde, eine nach einem regenerativen Gaskreisprozeß arbeitende Wärme- und Kältemaschine zu schaffen, bei der die Einfriergefahr des kalten Wärmetauschers mit konstruktiv und regeltechnisch einfachen Mitteln auf energetisch sinnvolle Weise beseitigt wird.The invention has for its object one after a regenerative gas cycle process to create working heating and cooling machine in which the Risk of freezing of the cold heat exchanger with design and control technology is simply eliminated in an energetically meaningful manner.

Die Lösung dieser Aufgabenstellung durch die Erfindung ist dadurch gekennzeichnet, daß mindestens einer der dem kalten Prozeßraum zugeordneten Regeneratoren zur Veränderung der über den kalten Wärmetauscherkreislauf zwischen Prozeßgas und Umgebung übertragenen Wärmemenge mit mindestens einem ein Steuerventil enthaltenen Bypass versehen ist.The solution to this problem by the invention is characterized in that that at least one of the cold process room assigned Regenerators to change the cold heat exchange circuit amount of heat transferred between process gas and environment with at least a bypass containing a control valve is provided.

Durch die erfindungsgemäße Ausbildung eines Bypasses zu mindestens einem der dem kalten Wärmetauscher zugeordneten Regeneratoren wird beim Auftreten von Vereisungen am Luftwärmetauscher das Bypassventil zeitlich begrenzt geöffnet, so daß dem Prozeßgas in diesem durch den Bypass umgangenen Regenerator keine Wärme entzogen und auf diese Weise der in der Maschine angeordnete kalte Wärmetauscher durch die aus dem warmen Prozeßraum kommende Wärmemenge auf eine Temperatur oberhalb des Gefrierpunktes gebracht wird, womit zugleich der Luftwärmetauscher enteist wird. Auch bei einem Ausfall der Umwälzpumpe in dem zum kalten Wärmetauscher gehörenden Kreislauf wird auf diese Weise selbst bei weiterlaufender Maschine ein Einfrieren des kalten Wärmetauschers vermieden. The inventive formation of a bypass to at least one of the regenerators assigned to the cold heat exchanger is activated the bypass valve of icing on the air heat exchanger is limited in time opened so that the process gas in this bypassed bypass Regenerator no heat is removed and in this way the in the machine arranged cold heat exchangers through the from the warm process room amount of heat coming to a temperature above freezing is brought, with which the air heat exchanger is de-iced at the same time. Also in the event of a failure of the circulation pump in the one belonging to the cold heat exchanger In this way, the cycle becomes active even when the machine is running freezing of the cold heat exchanger avoided.

Bei einer bevorzugten Ausführungsform der Erfindung ist die Bypassleitung in Form einer Durchgangsöffnung im Regenerator ausgebildet, die an beiden Enden im Normalbetrieb der Maschine verschlossen ist. Hierdurch ergibt sich eine totraumfreie Ausgestaltung dieses Regenerators.In a preferred embodiment of the invention, the bypass line is in Formed a through opening in the regenerator, the two Ends are closed during normal operation of the machine. This results in a dead space-free design of this regenerator.

Gemäß einem weiteren Merkmal der Erfindung wird die Bypassleitung durch einen Tauchkolben verschlossen, der über einen Elektromagnet entgegen der Kraft einer Rückzugsfeder bewegbar ist. Diese erfindungsgemäße Weiterbildung ergibt eine besonders einfache und funktionssichere Konstruktion mit geringem Raumbedarf.According to a further feature of the invention, the bypass line is passed through closed a plunger, which is countered by an electromagnet Force of a return spring is movable. This invention Further training results in a particularly simple and reliable construction with little space requirement.

Auf der Zeichnung ist außer einem schematischen Ausführungsbeispiel einer nach einem regenerativen Gaskreisprozeß arbeitenden Wärme- und Kältemaschine eine konstruktive Ausführungsmöglichkeit der Erfindung dargestellt und zwar zeigen:

Figur 1
eine schematische Darstellung einer Wärme- und Kältemaschine und
Figur 2
einen Längsschnitt durch ein Ausführungsbeispiel eines mit einem Bypass versehenden Regenerators
In addition to a schematic exemplary embodiment of a heating and cooling machine working according to a regenerative gas cycle process, the drawing shows a constructive embodiment of the invention, namely:
Figure 1
a schematic representation of a heating and cooling machine and
Figure 2
a longitudinal section through an embodiment of a regenerator provided with a bypass

Die in Figur 1 schematisch dargestellte Wärme- und Kältemaschine umfaßt ein druckdichtes Gehäuse 1, in dem ein heißer Kolben 2 und ein kalter Kolben 3 linear beweglich angeordnet sind. Der heiße Kolben 2 begrenzt ein heißes Arbeitsvolumen 4, dem Wärme zugeführt wird, beispielsweise durch eine gasbeheizte Brennkammer 5. Der kalte Kolben 3 begrenzt ein kaltes Arbeitsvolumen 6. Beide Kolben 2 und 3 begrenzen ein warmes Arbeitsvolumen 7. Für die synchronisierte Bewegung der Kolben 2 und 3 ist beim Ausführungsbeispiel ein Getriebe 8 vorgesehen, das über eine hohle Kolbenstange 9 mit dem kalten Kolben 3 und über eine weitere Kolbenstange 10 mit dem heißen Kolben 2 verbunden ist.The heating and cooling machine shown schematically in Figure 1 includes a pressure-tight housing 1, in which a hot piston 2 and a cold piston 3 are arranged linearly movable. The hot piston 2 limits a hot working volume 4, to which heat is supplied, for example by a gas-heated one Combustion chamber 5. The cold piston 3 limits a cold working volume 6. Both pistons 2 and 3 limit a warm working volume 7. For the synchronized movement of the pistons 2 and 3 is in the embodiment a gear 8 is provided, which is connected to the cold via a hollow piston rod 9 Piston 3 and another piston rod 10 with the hot piston 2 connected is.

Sowohl zwischen dem heißen Arbeitsvolumen 4 und dem warmen Arbeitsvolumen 7 als auch zwischen dem warmen Arbeitsvolumen 7 und dem kalten Arbeitsvolumen 6 ist jeweils ein Regenerator 11 bzw. 12 angeordnet. Dem warmen Arbeitsvolumen 7 ist weiterhin ein warmer Wärmetauscher 14 zugeordnet, der mit dem Regenerator 11 in Reihe geschaltet ist und ebenso wie dieser vom Prozeßgas durchströmt wird. Aus diesem warmen Wärmetauscher 13 wird im geschlossenen Kreislauf über eine Umwälzpumpe 13a Wärme an einen beispielsweise als Heizung 14 ausgebildeten Wärmetauscher abgegeben.Both between the hot working volume 4 and the warm working volume 7 as well as between the warm working volume 7 and the cold one Working volume 6, a regenerator 11 or 12 is arranged. The warm working volume 7 is also assigned a warm heat exchanger 14, which is connected in series with the regenerator 11 and as well this is flowed through by the process gas. From this warm heat exchanger 13 is heated in the closed circuit via a circulation pump 13a a heat exchanger designed as a heater 14, for example.

Auch dem kalten Arbeitsvolumen 6 ist ein mit dem Regenerator 12 in Reihe geschalteter, von Prozeßgas durchströmter kalter Wärmetauscher 15 zugeordnet, der mit einem Luftwärmetauscher 16 in einem geschlossenen Kreislauf angeordnet ist. In diesem Kreislauf befindet sich eine Umwälzpumpe 15a.The cold working volume 6 is also in series with the regenerator 12 assigned cold heat exchanger 15 through which process gas flows, the one with an air heat exchanger 16 in a closed circuit is arranged. A circulation pump 15a is located in this circuit.

Bei dem in Figur 1 schematisch dargestellten Ausführungsbeispiel einer Wärme- und Kältemaschine ist der dem kalten Arbeitsvolumen 6 zugeordnete Regenerator 12 mit einem Bypass 17 versehen, in dem ein Bypassventil 17a angeordnet ist. Im Normalbetrieb ist dieses Bypassventil 17a geschlossen, so daß der Bypass 17 keinen Einfluß auf die nach einem regenerativen Gaskreisprozeß arbeitende Wärme- und Kältemaschine hat.In the embodiment shown schematically in Figure 1 The heating and cooling machine is the one assigned to the cold working volume 6 Regenerator 12 is provided with a bypass 17, in which a bypass valve 17a is arranged. In normal operation, this bypass valve 17a is closed, see above that the bypass 17 has no effect on the after a regenerative gas cycle process working heating and cooling machine.

Da der Luftwärmetauscher 16 der atmosphärischen Luft Wärme entzieht, besteht die Gefahr, daß bei Lufttemperaturen um den Gefrierpunkt und bei hoher Luftfeuchtigkeit dieser Luftwärmetauscher 16 einfriert. In diesem Fall würde bei einem weiteren Betrieb der Maschine auch der kalte Wärmetauscher 15 in der Maschine einfrieren. Hierdurch würde nicht nur der Gaskreisprozeß beeinträchtigt, sondern eine derart starke Absenkung der Temperatur im kalten Arbeitsvolumen 7 auftreten, so daß die Gefahr einer Zerstörung der Maschine besteht. Diese Gefahr entsteht auch dann, wenn beispielsweise durch eine Störung der Umwälzpumpe 1 5a der Wärmeaustausch im kalten Wärmetauscher 15 behindert wird.Since the air heat exchanger 16 extracts heat from the atmospheric air, there is the danger that at air temperatures around freezing and at high Humidity of this air heat exchanger 16 freezes. In this case when the machine continues to operate, the cold heat exchanger 15 in freeze the machine. This would not only affect the gas cycle process, but such a sharp drop in temperature in the cold work volume 7 occur, so that the risk of destruction of the machine consists. This danger also arises if, for example, a Malfunction of the circulation pump 1 5a heat exchange in the cold Heat exchanger 15 is hindered.

Um diese Einfriergefahr des Luftwärmetauschers 16 und damit des kalten Wärmetauschers 15 nicht nur bei Lufttemperaturen um den Gefrierpunkt, sondern auch beim Ausfall der Umwälzpumpe 15a zu beseitigen, wird das Bypassventil 17a zumindest zeitlich begrenzt geöffnet. Das Prozeßgas wird aufgrund des geringeren Strömungswiderstandes den Regenerator 12 durch den Bypass 17 umgehen, so daß dem Prozeßgas im Regenerator 12 keine Wärme entzogen wird. Da der kalte Wärmetauscher 15 in Reihe zum Regenerator 12 geschaltet ist, wird der kalte Wärmetauscher 15 durch die aus dem warmen Arbeitsvolumen 7 kommende Wärmemenge auf einer Temperatur oberhalb des Gefrierpunktes gebracht bzw. gehalten.To this risk of freezing the air heat exchanger 16 and thus the cold Heat exchanger 15 not only at air temperatures around freezing, but The bypass valve is also to be eliminated if the circulation pump 15a fails 17a opened at least for a limited time. The process gas is due the lower flow resistance, the regenerator 12 through the Bypass bypass 17 so that the process gas in the regenerator 12 no heat is withdrawn. Since the cold heat exchanger 15 is connected in series to the regenerator 12 is switched, the cold heat exchanger 15 by the from the warm Working volume 7 coming amount of heat at a temperature above the Freezing point brought or held.

Hierdurch wird beim Auftreten von Vereisungen des Luftwärmetauschers 16 dieser abgetaut bzw. vor dem Einfrieren geschützt, vorausgesetzt daß die Umwälzpumpe 15a arbeitet. Sollte die Umwälzpumpe 15a ausfallen, wodurch zugleich eine Unterkühlung des Luftwärmetauschers 16 unterbleibt, sorgt die aus dem warmen Arbeitsraum 7 kommende Wärme dafür, daß bei einer trotz Ausfalls der Umwälzpumpe 15a weiterbetriebenen Maschine keine Unterkühlung des kalten Wärmetauschers 15 stattfindet, die zu einer Zerstörung der Maschine führen würde.As a result, when icing of the air heat exchanger 16 occurs this defrosted or protected against freezing, provided that the Circulation pump 15a works. Should the circulation pump 15a fail, causing at the same time there is no undercooling of the air heat exchanger 16 coming from the warm work room 7 heat that in spite of Failure of the circulating pump 15a continues to operate Hypothermia of the cold heat exchanger 15 takes place, which leads to a Destruction of the machine.

Die Figur 2 zeigt ein Ausführungsbeispiel des Regenerators 12 in einem Längsschnitt.FIG. 2 shows an embodiment of the regenerator 12 in one Longitudinal section.

Auf der Zeichnung ist ein Teil des Gehäuses 1 und des kalten Kolbens 3 der Maschine zu erkennen. Der Regenerator 12 steht mit dem kalten Arbeitsvolumen 6 der Maschine über einen Ringkanal 18 in Verbindung und ist in Reihe mit dem kalten Wärmetauscher 15 geschaltet, von dem ebenfalls ein Teil in Figur 2 dargestellt ist. Der in Figur 2 gezeigte Teil des Regenerators 12 ist weiterhin mit einer Durchgangsöffnung 12a versehen, die durch einen Tauchkolben 19 verschließbar ist. In der Schließstellung füllt der Tauchkolben 19 die als Bypass wirkende Durchgangsöffnung 12a des Regenerators 12 aus, so daß sich durch den Bypass kein Totraum im Normalbetrieb der Maschine ergibt.In the drawing, part of the housing 1 and the cold piston 3 is the Machine to recognize. The regenerator 12 stands with the cold working volume 6 of the machine via an annular channel 18 and is in series switched to the cold heat exchanger 15, part of which is also in Figure 2 is shown. The part of the regenerator 12 shown in FIG. 2 is further provided with a through hole 12a through a plunger 19 is closable. In the closed position, the plunger 19 fills the through opening 12a of regenerator 12 acting as a bypass, see above that there is no dead space in the normal operation of the machine due to the bypass.

Der in Verbindung mit der Durchgangsöffnung 12a das Bypassventil bildende Tauchkolben 19 kann aus seiner in Figur 2 dargestellten Schließstellung entgegen der Kraft einer Rückstellfeder 21 durch einen Elektromagneten 20 herausbewegt werden. Diese Freigabestellung und damit die Öffnung des Bypasses ist gestrichelt in Figur 2 eingezeichnet. In dieser gestrichelten Stellung wird das Prozeßgas im wesentlichen unter Umgehung des Regenerators 12 dessen Durchgangsöffnung 12a durchströmen, um auf diese Weise ein Einfrieren des kalten Wärmetauschers 15 und damit des in Figur 2 nicht dargestellten Luftwärmetauschers 16 zu verhindern. The one forming the bypass valve in connection with the through opening 12a Plunger 19 can counter from its closed position shown in Figure 2 the force of a return spring 21 is moved out by an electromagnet 20 become. This release position and thus the opening of the bypass is shown in dashed lines in Figure 2. In this dashed position the process gas is essentially bypassing the regenerator 12th flow through its through opening 12a, in order to freeze in this way of the cold heat exchanger 15 and thus that not shown in FIG. 2 To prevent air heat exchanger 16.

Bezugszeichenliste:Reference symbol list:

11
Gehäusecasing
22nd
heißer Kolbenhot piston
33rd
kalter Kolbencold flask
44th
heißes Arbeitsvolumenhot working volume
55
BrennkammerCombustion chamber
66
kaltes Arbeitsvolumencold working volume
77
warmes Arbeitsvolumenwarm working volume
88th
Getriebetransmission
99
hohle Kolbenstangehollow piston rod
1010th
KolbenstangePiston rod
1111
Regeneratorregenerator
1212th
Regeneratorregenerator
12a12a
DurchgangsöffnungThrough opening
1313
warmer Wärmetauscherwarm heat exchanger
13a13a
UmwälzpumpeCirculation pump
1414
Heizungheater
1515
kalter Wärmetauschercold heat exchanger
15a15a
UmwälzpumpeCirculation pump
1616
LuftwärmetauscherAir heat exchanger
1717th
Bypassbypass
17a17a
BypassventilBypass valve
1818th
RingkanalRing channel
1919th
TauchkolbenPlunger
2020th
ElektromagnetElectromagnet
2121
RückstellfederReturn spring

Claims (3)

  1. Heating and refrigerating machine operating in accordance with a regenerative gas cycle, having at least two pistons (2, 3), which separate at least three process spaces (4, 6, 7) from one another with the interposition in each case of at least one heat exchanger (13, 15) and at least one regenerator (11, 12) connected in series with the said heat exchangers, characterized in that at least one of the regenerators (12) assigned to the cold process space (6) is provided with at least one bypass (17) containing a control valve (17a) to vary the amount of heat that is transferred between the process gas and the environment by the cold heat exchanger circuit.
  2. Heating and refrigerating machine according to Claim 1, characterized in that the bypass line (17) is constructed in the form of a passage opening (12a) in the regenerator (12), this opening being closed at both ends during normal operation of the machine.
  3. Heating and refrigerating machine according to Claim 1 or 2, characterized in that the bypass line (17) can be closed by a plunger piston (19), which can be moved by an electromagnet (20) counter to the force of a return spring (21).
EP96900320A 1995-01-25 1996-01-13 Heat and cold-generating machine Expired - Lifetime EP0805941B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19502190 1995-01-25
DE19502190A DE19502190C2 (en) 1995-01-25 1995-01-25 Heating and cooling machine
PCT/EP1996/000134 WO1996023182A1 (en) 1995-01-25 1996-01-13 Heat and cold-generating machine

Publications (2)

Publication Number Publication Date
EP0805941A1 EP0805941A1 (en) 1997-11-12
EP0805941B1 true EP0805941B1 (en) 1999-11-03

Family

ID=7752259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900320A Expired - Lifetime EP0805941B1 (en) 1995-01-25 1996-01-13 Heat and cold-generating machine

Country Status (8)

Country Link
US (1) US6029449A (en)
EP (1) EP0805941B1 (en)
JP (1) JPH11503511A (en)
KR (1) KR19980701775A (en)
AT (1) ATE186391T1 (en)
DE (2) DE19502190C2 (en)
ES (1) ES2139327T3 (en)
WO (1) WO1996023182A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746838A1 (en) * 1997-10-23 1999-04-29 Bosch Gmbh Robert Operating hot- and cold-energy machine working according to regenerative gas circuit process, especially Vuilleumier heat pump
JPH11193967A (en) * 1997-12-26 1999-07-21 Zexel:Kk Refrigerating cycle
US20060093977A1 (en) * 2003-07-01 2006-05-04 Pellizzari Roberto O Recuperator and combustor for use in external combustion engines and system for generating power employing same
DE102008009782A1 (en) * 2008-02-19 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance for drying a moist material with a cooling arrangement and a heating arrangement
DE102009023968A1 (en) * 2009-06-05 2010-12-09 Danfoss Compressors Gmbh Displacement unit of a Stirling cooling device and Stirling cooling device
DE112015000894T5 (en) * 2014-02-22 2016-11-24 Thermolift Inc. Thermally operated heat pump with a heat exchanger arranged between displacement bodies

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1275507A (en) * 1917-01-29 1918-08-13 Rudolph Vuilleumier Method and apparatus for inducing heat changes.
NL7000001A (en) * 1970-01-02 1971-07-06
DE2156773C3 (en) * 1971-11-16 1974-09-19 Motoren Werke Mannheim Ag Process for load-dependent control of the power of a double-acting hot gas engine
DE3536710A1 (en) * 1985-10-15 1987-04-23 Schneider Christian Dipl Ing Heat converter and method of operating it
US5400599A (en) * 1991-12-09 1995-03-28 Sanyo Electric Co., Ltd. Hot gas machine
JPH06101922A (en) * 1992-09-17 1994-04-12 Daikin Ind Ltd Vuilleumier heat pump apparatus

Also Published As

Publication number Publication date
WO1996023182A1 (en) 1996-08-01
DE19502190A1 (en) 1996-08-01
ATE186391T1 (en) 1999-11-15
ES2139327T3 (en) 2000-02-01
DE59603564D1 (en) 1999-12-09
EP0805941A1 (en) 1997-11-12
DE19502190C2 (en) 1998-03-19
JPH11503511A (en) 1999-03-26
KR19980701775A (en) 1998-06-25
US6029449A (en) 2000-02-29

Similar Documents

Publication Publication Date Title
EP0945291B1 (en) Means and method for heating and colling a utility space of a motor vehicle
DE10123830A1 (en) Vehicle air conditioning system uses a heat pump action with the evaporator as the heat source, in the heating mode, for a rapid heating of the interior without loss and heating of the motor to its working temperature
DE60018751T2 (en) REFRIGERATOR OR FREEZER WITH AIRFLOW CONTROL
EP0216237A2 (en) Intermittently operating sorption accumulator with a solid-containing absorber
DE3907859C2 (en) Air-cooled refrigeration unit with a coolant circuit
DE1251493B (en)
DE102014106725A1 (en) DRIVE TRAVEL COOLING SYSTEM WITH COOLING AND HEATING MODES FOR HEAT EXCHANGERS
EP0805941B1 (en) Heat and cold-generating machine
DE2826430A1 (en) PASSENGER AREA HEATING AND AIR CONDITIONING SYSTEM FOR MOTOR VEHICLES WITH A LOW COOLANT TEMPERATURE ENGINE COOLING SYSTEM
DE10313850B4 (en) Refrigerant circuit with two-stage compression for a combined refrigeration system and heat pump operation, especially for motor vehicles
EP2321592B1 (en) Heat pump or refrigeration device and method for operating a heat pump or refrigeration device
DE2923621A1 (en) THERMAL DRIVE
DE3313371A1 (en) DEEP TEMPERATURE REFRIGERATOR
DE69120376T2 (en) Cooling system
DE102007047642B4 (en) refrigeration machine
DE69611717T2 (en) Vuillermier free piston machine
DE3803439A1 (en) Air-conditioning system for a motor vehicle
DE2231769B2 (en)
DE19913154A1 (en) Wobble plate Stirling cooler with reduced size and weight and increased cooling performance
DE1501098A1 (en) System for generating cold at low temperatures and for use in this system well-suited cold gas cooling machine
DE102018002120A1 (en) Device for tempering filter-cleaned liquid medium
DE2422150C3 (en) Hot gas piston machine with a device for regulating the weight of the working medium present in a working space
EP1808655A2 (en) Refrigeration system
DE10163865A1 (en) Stirling cycle gas cooler has cold finger terminal through which gas is pumped through gas cooler in alternate directions
DE102020110589A1 (en) Oil collector for a refrigeration circuit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970825

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI NL

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990129

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL

REF Corresponds to:

Ref document number: 186391

Country of ref document: AT

Date of ref document: 19991115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCINTILLA AG, DIREKTION

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59603564

Country of ref document: DE

Date of ref document: 19991209

ET Fr: translation filed
ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2139327

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000113

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030117

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030121

Year of fee payment: 8

Ref country code: AT

Payment date: 20030121

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20030123

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030124

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030225

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20031231

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040803

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050113

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050113

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040114

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050113