EP0595106B1 - Device for cooling with heat absorption caused by outer air in a water circuit - Google Patents

Device for cooling with heat absorption caused by outer air in a water circuit Download PDF

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Publication number
EP0595106B1
EP0595106B1 EP93116490A EP93116490A EP0595106B1 EP 0595106 B1 EP0595106 B1 EP 0595106B1 EP 93116490 A EP93116490 A EP 93116490A EP 93116490 A EP93116490 A EP 93116490A EP 0595106 B1 EP0595106 B1 EP 0595106B1
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EP
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Prior art keywords
water
buffer tank
recooler
heat exchanger
water circuit
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EP93116490A
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German (de)
French (fr)
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EP0595106A1 (en
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Karl Strässer
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
    • F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • the invention relates to a cooling device with outside air-induced heat removal from a water cycle, in which the water cycle in a frost-proof building passes a buffer tank, a pump and a heat exchanger and passes through the blower-equipped recooler to the frost-prone outside air.
  • the buffer tank is an upwardly open collecting trough which is arranged in the warm and which has to collect water which comes irregularly from the recooler so that it is available to the pump which conveys the water through the heat exchanger.
  • the water flowing from the heat exchanger to the recooler is rained in the recooler via nozzles, blown with outside air by means of the blower and collected in an outer basin, from where it flows down to the buffer tank. If the outside air should become so cold that the water in the recooler could freeze, then the water circuit is shut off and any remaining water still in the recooler can flow freely into the warm buffer tank.
  • the water cycle is open to a large extent because the nozzle rain, the outer basin and the buffer tank arranged in the warm housing are open are.
  • the water can be enriched and rotten relatively easily with oxygen and must then be renewed as a whole.
  • water continuously evaporates or evaporates from the open water circuit, so that a considerable amount of new water has to be constantly added to the water circuit in order to compensate for the high water loss.
  • An object of the invention is therefore to provide a cooling device of the type mentioned, in which evaporation of water from the water circuit is avoided while preventing freezing of water in the recooler due to outside air.
  • the cooling device according to the invention is solving this problem, characterized in that the water circuit is designed to be continuously closed with a closed buffer tank and with a recooler having a tube bundle, that the water circuit after the water pump passes the heat exchanger, passes from the heat exchanger to the recooler and from the recooler reaches the buffer tank, and that the inlet side of the recooler is connected to the top of the buffer tank via a switchable ventilation valve.
  • the tube bundle is a set of parallel tubes which are connected to each other by deflection bends and which lie in the air flow of the fan.
  • the ventilation valve is used to balance the air between the buffer tank and the tube bundle.
  • the cooling device according to the invention is usually operated without antifreeze. It is not suitable for air conditioning in hot summer temperatures.
  • the cooling device of the type in question is generally used for process cooling or for condenser cooling.
  • the heat exchanger is operated with a refrigerant that flows in gaseous and liquid out.
  • air present in the water circulation system is displaced, specifically when it is stopped from the buffer container into the tube bundle and when the tube bundle is started up into the buffer container.
  • the buffer tank is also an expansion tank and a special expansion tank is not required.
  • outlet side of the tube bundle recooler is connected via a fork to both the upper part and the lower part of the buffer tank and the upper fork connection is combined with the connection coming from the ventilation valve.
  • the cooling device When starting the cooling device of the type in question here, e.g. in winter operation, ensure that the temperature of the heat exchanger does not become too low.
  • simple means can ensure that the water runs through the heat exchanger at a sufficient temperature.
  • the output of the heat exchanger can be connected to the input of the pump via a changeover valve and a bypass line. In this way, the temperature of the water running through the heat exchanger in the cooling device according to the invention can be adjusted easily and with little effort, taking into account a minimum value.
  • the output of the heat exchanger is connected to the input of the pump via a switchable compensating valve which can be operated simultaneously with the ventilation valve. Due to the compensating valve, the water moves even faster into the buffer tank when the cooling device is at a standstill. Water in the line to the inlet of the tube bundle recooler can flow into the buffer tank.
  • the buffer container is provided with four water level measuring probes arranged one above the other for a make-up water level, an operating water level, a filling water level and an overfilling water level.
  • the water level in the closed buffer tank is measured by the water level probes during the various operations. If there is too little water in the cooling device circuit, an inlet valve for water is opened. If there is too much water in the cooling circuit, an outlet valve for water is opened.
  • the cooling device belongs to an inside frost-proof, warm building 1, outside of which, in addition to the frost-prone, often cooler outside air 2 is present.
  • a heat exchanger 3 to which gaseous refrigerant is supplied via an inlet 4 and which releases liquid refrigerant via an outlet 5, with which process cooling is carried out.
  • a self-contained water circuit 6 is provided, which is driven by a pump 7 and after which it passes through the heat exchanger 3.
  • the water circuit 6 leaves the heat exchanger 3 and reaches a recooler 8, which is located outside the building 1 in the outside air 2.
  • the water flows through a tube bundle 9 which is exposed to an air flow generated by a blower 10.
  • the water circuit passes from the recooler 8 to a buffer tank 11 and enters it via a fork 12 both above and below.
  • the water circuit 6 leaves the buffer tank 11 on its underside and flows to the pump 7.
  • the buffer tank 11 is equipped with a water level measuring probe 13 for a make-up water level, a probe 14 for an operating water level, a probe 15 for a filling water level and one Probe 16 equipped for a trapping water level.
  • a ventilation valve 18 is connected, which is connected to the top of the buffer tank 11 by being connected via a ventilation line 19 to the fork 12 at a point supplying the top.
  • the output of the heat exchanger 3 is connected to the input of the pump 7 via a controllable compensating valve 20 and, after the output of the heat exchanger 3, a changeover valve 21 is provided in the water circuit 6, which can connect the output to the input of the pump 7 via a bypass line 22.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

There exists a cooling device in which the water circuit 6 passes, in a frost-proof building 1, through a buffer container 11, a pump 7 and a heat exchanger 3 and passes, in the frost-endangered outer air 2, through a recooler 8 provided with a blower 10. In this arrangement, it is desirable if evaporation of water from the water circuit is avoided, while preventing water in the recooler from freezing as a result of the outer air. This is achieved in that the water circuit 6 is constructed, in a continuously closed manner, with a closed buffer container and with a recooler 8 having a tube bundle 9, and in that the inlet side 17 of the recooler 8 is connected to the upper side of the buffer container 11 via a switchable ventilation valve 18. By virtue of the ventilation valve, the water circuit can be completely closed, with the recooler being protected against freezing up without antifreezing agents. <IMAGE>

Description

Die Erfindung betrifft eine Kühlvorrichtung mit Außenluftbewirktem Wärmeentzug aus einem Wasserkreislauf, bei der der Wasserkreislauf in einem frostsicheren Gebäude einen Pufferbehälter, eine Pumpe und einen Wärmetauscher passiert und an der frostgefährdeten Außenluft einen mit einem Gebläse versehenen Rückkühler passiert.The invention relates to a cooling device with outside air-induced heat removal from a water cycle, in which the water cycle in a frost-proof building passes a buffer tank, a pump and a heat exchanger and passes through the blower-equipped recooler to the frost-prone outside air.

Bei einer durch die Praxis bekannten Kühlvorrichtung dieser Art ist der Pufferbehälter eine nach oben offene Sammelwanne, die im Warmen angeordnet ist und das vom Rückkühler unregelmäßig herkommende Wasser zu sammeln hat, damit es der Pumpe zur Verfügung steht, die das Wasser durch den Wärmetauscher fördert. Das vom Wärmetauscher zum Rückkühler geströmte Wasser wird im Rückkühler über Düsen verregnet, so mittels des Gebläses mit Außenluft beblasen und in einem äußeren Becken gesammelt, von wo es zum Pufferbehälter abwärts fließt. Wenn die Außenluft so kalt werden sollte, daß das Wasser in dem Rückkühler gefrieren könnte, dann wird der Wasserkreislauf abgestellt und kann restliches, noch im Rückkühler befindliches Wasser in den warmen Pufferbehälter ungehindert abfließen. Bei der bekannten Kühlvorrichtung ist der Wasserkreislauf in einem weiten Umfang offen, da die Düsen-Verregnung, das äußere Becken und der im warmen Gehäuse angeordnete Pufferbehälter offen sind. Das Wasser kann relativ einfach sich mit Sauerstoff anreichern und faulen und muß dann insgesamt erneuert werden. Insbesondere aber verdunstet bzw. verdampft aus dem offenen Wasserkreislauf ständig Wasser, so daß man in den Wasserkreislauf ständig neues Wasser in erheblicher Menge nachführen muß, um den hohen Wasserverlust auszugleichen.In a cooling device of this type which is known in practice, the buffer tank is an upwardly open collecting trough which is arranged in the warm and which has to collect water which comes irregularly from the recooler so that it is available to the pump which conveys the water through the heat exchanger. The water flowing from the heat exchanger to the recooler is rained in the recooler via nozzles, blown with outside air by means of the blower and collected in an outer basin, from where it flows down to the buffer tank. If the outside air should become so cold that the water in the recooler could freeze, then the water circuit is shut off and any remaining water still in the recooler can flow freely into the warm buffer tank. In the known cooling device, the water cycle is open to a large extent because the nozzle rain, the outer basin and the buffer tank arranged in the warm housing are open are. The water can be enriched and rotten relatively easily with oxygen and must then be renewed as a whole. In particular, however, water continuously evaporates or evaporates from the open water circuit, so that a considerable amount of new water has to be constantly added to the water circuit in order to compensate for the high water loss.

Eine Aufgabe der Erfindung ist es daher, eine Kühlvorrichtung der eingangs genannten Art zu schaffen, bei der unter Verhinderung eines außenluftbedingten Gefrierens von Wasser im Rückkühler ein Verdunsten von Wasser aus dem Wasserkreislauf vermieden ist. Die erfindungsgemäße Kühlvorrichtung ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß der Wasserkreislauf mit einem geschlossenen Pufferbehälter und mit einem ein Rohrbündel aufweisenden Rückkühler durchgehend geschlossen ausgebildet ist, daß der Wasserkreislauf nach der Wasserpumpe den Wärmetauscher passiert, von dem Wärmetauscher zu dem Rückkühler gelangt und von dem Rückkühler zu dem Pufferbehälter gelangt, und daß die Einlaufseite des Rückkühlers über ein schaltbares Belüftungsventil mit der Oberseite des Pufferbehälters verbunden ist.An object of the invention is therefore to provide a cooling device of the type mentioned, in which evaporation of water from the water circuit is avoided while preventing freezing of water in the recooler due to outside air. The cooling device according to the invention is solving this problem, characterized in that the water circuit is designed to be continuously closed with a closed buffer tank and with a recooler having a tube bundle, that the water circuit after the water pump passes the heat exchanger, passes from the heat exchanger to the recooler and from the recooler reaches the buffer tank, and that the inlet side of the recooler is connected to the top of the buffer tank via a switchable ventilation valve.

Da der Wasserkreislauf durchgehend, d.h. über seine gesamte Länge geschlossen ist, kann kein Wasser verdunsten. Wenn die Kühlvorrichtung stillgesetzt wird, weil sie der Kälte der Außenluft wegen nicht gebraucht wird, so läßt man den Rückkühler bzw. das Rohrbündel durch Öffnen des Belüftungsventiles in den Pufferbehälter leerlaufen, so daß im Rückkühler kein Wasser gefrieren kann. Das Belüftungsventil wird wieder geschlossen, wenn der Wasserkreislauf wieder in Gang gesetzt werden soll.Since the water cycle is continuous, ie closed over its entire length, no water can evaporate. If the cooling device is shut down because it is not needed due to the cold of the outside air, then the recooler or the tube bundle is left to empty by opening the ventilation valve in the buffer tank, so that no water can freeze in the recooler. The ventilation valve is closed again when the water circuit is to be restarted.

Aufgrund des Belüftungsventiles läßt sich der Wasserkreislauf, ohne Frostschutzmittel gegen Einfrieren des Rückkühlers gesichert, völlig geschlossen vorsehen. Das Rohrbündel ist ein Satz von parallelen Rohren, die durch Umlenkbögen miteinander verbunden sind und im Luftstrom des Gebläses liegen. Das Belüftungsventil dient dem Luftausgleich zwischen dem Pufferbehälter und dem Rohrbündel.Due to the ventilation valve, the water circuit can be completely closed without anti-freeze to prevent the recooler from freezing. The tube bundle is a set of parallel tubes which are connected to each other by deflection bends and which lie in the air flow of the fan. The ventilation valve is used to balance the air between the buffer tank and the tube bundle.

Die erfindungsgemäße Kühlvorrichtung wird in der Regel ohne Frostschutzmittel betrieben. Sie ist bei heißen Sommertemperaturen nicht für Klimaanlagen geeignet. Die Kühlvorrichtung der hier zur Rede stehenden Art wird in der Regel zur Prozeßkühlung oder zur Kondensatorkühlung verwendet. In der Regel wird der Wärmetauscher mit einem Kältemittel betrieben, das gasförmig zuströmt und flüssig abströmt. Bei der erfindungsgemäßen Kühlvorrichtung wird im Wasserkreislaufsystem vorhandene Luft verlagert, und zwar beim Stillsetzen aus dem Pufferbehälter in das Rohrbündel und bei Inbetriebnahme vom Rohrbündel in den Pufferbehälter. Der Pufferbehälter ist auch ein Ausdehnungsbehälter und ein besonderes Ausdehnungsgefäß ist nicht erforderlich.The cooling device according to the invention is usually operated without antifreeze. It is not suitable for air conditioning in hot summer temperatures. The cooling device of the type in question is generally used for process cooling or for condenser cooling. As a rule, the heat exchanger is operated with a refrigerant that flows in gaseous and liquid out. In the cooling device according to the invention, air present in the water circulation system is displaced, specifically when it is stopped from the buffer container into the tube bundle and when the tube bundle is started up into the buffer container. The buffer tank is also an expansion tank and a special expansion tank is not required.

Besonders zweckmäßig und vorteilhaft ist es, wenn die Auslaufseite des Rohrbündel-Rückkühlers über eine Gabelung sowohl an den oberen Teil als auch an den unteren Teil des Pufferbehälters angeschlossen ist und der obere Gabelungs-Anschluß mit der von dem Belüftungsventil herkommenden Verbindung zusammengefaßt ist.It is particularly expedient and advantageous if the outlet side of the tube bundle recooler is connected via a fork to both the upper part and the lower part of the buffer tank and the upper fork connection is combined with the connection coming from the ventilation valve.

Dies verbessert und erleichtert die Trennung von Wasser und Luft bei den zwischen Pufferbehälter und Rückkühler stattfindenden Austauschvorgängen.This improves and facilitates the separation of water and air in the exchange processes taking place between the buffer tank and the recooler.

Beim Anfahren der Kühlvorrichtung der hier zur Rede stehenden Art ist, z.B. bei Winterbetrieb, dafür zu sorgen, daß die Temperatur des Wärmetauschers nicht zu niedrig wird. Bei der bekannten Kühlvorrichtung mit offenem Wasserkreislauf läßt sich mit einfachen Mitteln dafür sorgen, daß das Wasser mit ausreichender Temperatur durch den Wärmetauscher läuft. Bei der erfindungsgemäßen Kühlvorrichtung mit geschlossenem Wasserkreislauf ist es besonders zweckmäßig und vorteilhaft, wenn über ein Umschaltventil und eine Bypassleitung der Ausgang des Wärmetauschers mit dem Eingang der Pumpe verbindbar ist. Auf diese Weise läßt sich die Temperatur des durch den Wärmetauscher laufenden Wassers bei der erfindungsgemäßen Kühlvorrichtung einfach und mit wenig Aufwand unter Berücksichtigung eines Minimalwertes einregeln.When starting the cooling device of the type in question here, e.g. in winter operation, ensure that the temperature of the heat exchanger does not become too low. In the known cooling device with an open water circuit, simple means can ensure that the water runs through the heat exchanger at a sufficient temperature. In the cooling device according to the invention with a closed water circuit, it is particularly expedient and advantageous if the output of the heat exchanger can be connected to the input of the pump via a changeover valve and a bypass line. In this way, the temperature of the water running through the heat exchanger in the cooling device according to the invention can be adjusted easily and with little effort, taking into account a minimum value.

Besonders zweckmäßig und vorteilhaft ist es ebenso, wenn der Ausgang des Wärmetauschers mit dem Eingang der Pumpe über ein schaltbares Ausgleichsventil verbunden ist, das gleichzeitig mit dem Belüftungsventil bedienbar ist. Aufgrund des Ausgleichsventiles verlagert sich für einen Stillstand der Kühlvorrichtung das Wasser noch schneller in den Pufferbehälter. Es kann in der Leitung zum Einlaß des Rohrbündel-Rückkühlers befindliches Wasser in den Pufferbehälter strömen.It is also particularly expedient and advantageous if the output of the heat exchanger is connected to the input of the pump via a switchable compensating valve which can be operated simultaneously with the ventilation valve. Due to the compensating valve, the water moves even faster into the buffer tank when the cooling device is at a standstill. Water in the line to the inlet of the tube bundle recooler can flow into the buffer tank.

Besonders zweckmäßig und vorteilhaft ist es weiterhin, wenn der Pufferbehälter mit vier übereinander angeordneten Wasserstandsmeßsonden für einen Nachspeise-Wasserstand, einen Betriebs-Wasserstand, einen Füll-Wasserstand und einen Überfüllungs-Wasserstand versehen ist. Durch die Wasserstandsmeßsonden wird der Wasserstand in dem geschlossenen Pufferbehälter während der verschiedenen Betriebsvorgänge gemessen. Wenn zu wenig Wasser in dem Kreislauf der Kühlvorrichtung ist, wird ein Einlaßventil für Wasser geöffnet. Wenn zu viel Wasser in dem Kreislauf der Kühlvorrichtung ist, wird ein Auslaßventil für Wasser geöffnet.It is also particularly expedient and advantageous if the buffer container is provided with four water level measuring probes arranged one above the other for a make-up water level, an operating water level, a filling water level and an overfilling water level. The water level in the closed buffer tank is measured by the water level probes during the various operations. If there is too little water in the cooling device circuit, an inlet valve for water is opened. If there is too much water in the cooling circuit, an outlet valve for water is opened.

In der Zeichnung ist eine bevorzugte Ausführungsform der Erfindung dargestellt und zwar schematisch eine Kühlvorrichtung mit Außenluft-bewirktem Wärmeentzug aus einem Wasserkreislauf.In the drawing, a preferred embodiment of the invention is shown, namely schematically a cooling device with external air-induced heat removal from a water cycle.

Die Kühlvorrichtung gemäß Zeichnung gehört zu einem im Inneren frostsicheren, warmen Gebäude 1, außerhalb dessen, neben dem frostgefährdete, häufig kühlere Außenluft 2 vorhanden ist. In dem Gehäuse 1 befindet sich ein Wärmetauscher 3, dem über einen Einlaß 4 gasförmiges Kältemittel zugeführt wird und der über einen Auslaß 5 flüssiges Kältemittel abgibt, mit dem eine Prozeßkühlung durchgeführt wird. Um den Wärmeaustausch vornehmen zu können, ist ein von Rohrleitungen gebildeter, in sich geschlossener Wasserkreislauf 6 vorgesehen, der von einer Pumpe 7 getrieben wird und nach dieser den Wärmetauscher 3 passiert.The cooling device according to the drawing belongs to an inside frost-proof, warm building 1, outside of which, in addition to the frost-prone, often cooler outside air 2 is present. In the housing 1 there is a heat exchanger 3, to which gaseous refrigerant is supplied via an inlet 4 and which releases liquid refrigerant via an outlet 5, with which process cooling is carried out. In order to be able to carry out the heat exchange, a self-contained water circuit 6 is provided, which is driven by a pump 7 and after which it passes through the heat exchanger 3.

Der Wasserkreislauf 6 verläßt den Wärmetauscher 3 und gelangt zu einem Rückkühler 8, der sich außerhalb des Gebäudes 1 in der Außenluft 2 befindet. In dem Rückkühler 8 strömt das Wasser durch ein Rohrbündel 9, das einem Luftstrom ausgesetzt ist, der von einem Gebläse 10 erzeugt wird. Der Wasserkreislauf gelangt von dem Rückkühler 8 zu einem Pufferbehälter 11 und tritt in diesem über eine Gabelung 12 sowohl oben als auch unten ein. Der Wasserkreislauf 6 verläßt den Pufferbehälter 11 an dessen Unterseite und strömt zu der Pumpe 7. Der Pufferbehälter 11 ist mit einer Wasserstandsmeßsonde 13 für einen Nachspeise-Wasserstand, eine Sonde 14 für einen Betriebs-Wasserstand, eine Sonde 15 für einen Füll-Wasserstand und eine Sonde 16 für einen Überfüllungs-Wasserstand bestückt.The water circuit 6 leaves the heat exchanger 3 and reaches a recooler 8, which is located outside the building 1 in the outside air 2. In the recooler 8, the water flows through a tube bundle 9 which is exposed to an air flow generated by a blower 10. The water circuit passes from the recooler 8 to a buffer tank 11 and enters it via a fork 12 both above and below. The water circuit 6 leaves the buffer tank 11 on its underside and flows to the pump 7. The buffer tank 11 is equipped with a water level measuring probe 13 for a make-up water level, a probe 14 for an operating water level, a probe 15 for a filling water level and one Probe 16 equipped for a trapping water level.

An die Einlaßseite 17 des Rückkühlers 8 ist ein Belüftungsventil 18 angeschlossen, das mit der Oberseite des Pufferbehälters 11 verbunden ist, indem es über eine Belüftungsleitung 19 an die Gabelung 12 an einer der Oberseite zuführenden Stelle angeschlossen ist. Der Ausgang des Wärmetauschers 3 ist über ein steuerbares Ausgleichsventil 20 mit dem Eingang der Pumpe 7 verbunden und nach dem Ausgang des Wärmetauschers 3 ist im Wasserkreislauf 6 ein Umschaltventil 21 vorgesehen, das den Ausgang über eine Bypassleitung 22 an den Eingang der Pumpe 7 legen kann.At the inlet side 17 of the recooler 8, a ventilation valve 18 is connected, which is connected to the top of the buffer tank 11 by being connected via a ventilation line 19 to the fork 12 at a point supplying the top. The output of the heat exchanger 3 is connected to the input of the pump 7 via a controllable compensating valve 20 and, after the output of the heat exchanger 3, a changeover valve 21 is provided in the water circuit 6, which can connect the output to the input of the pump 7 via a bypass line 22.

Claims (5)

  1. Cooling device with extraction of heat from a water circuit caused by outside air, in which the water circuit (6) in a frost-proof building (1) passes through a buffer tank (11), a water pump (7) and a heat exchanger (3), and in the outside air which is at risk from frost passes through a recooling device (8) provided with a fan (10), characterised in that the water circuit (6) is closed continuously with a closed buffer tank (11) and with a recooling device (8) comprising a pipe bundle (9), in that the water circuit (6) after the water pump (7) passes through the heat exchanger (3), from the heat exchanger (3) to the recooling devise (8) and from the recooling device (8) to the buffer tank (11), and in that the input side (17) of the recooling device (8) is connected by a switchable aeration valve (18) to the upper side of the buffer tank (11).
  2. Cooling device according to claim 1, characterised in that the output side of the pipe bundle recooling device (8) is connected by a fork (12) to both the upper portion and the lower portion of the buffer tank (11), and the upper fork connection is combined with the connection (19) coming from the aeration valve (18).
  3. Cooling device according to claim 1 or 2, characterised in that by a switching valve (21) and a bypass pipe (12), the output of the heat exchanger (3) can be connected to the input of the pump (7).
  4. Cooling device according to claim 1, 2 or 3, characterised in that the output of the heat exchanger (3) is connected to the input of the pump (7) by a switchable equalising valve (20) which can be operated simultaneously with the aeration valve (18).
  5. Cooling device according to any of the preceding claims, characterised in that the buffer tank (11) is provided with four water level measuring probes (13, 14, 15, 16) arranged one above the other for a backfeed water level, an operating water level, a filling water level and an overfilling water level.
EP93116490A 1992-10-16 1993-10-12 Device for cooling with heat absorption caused by outer air in a water circuit Expired - Lifetime EP0595106B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4234874 1992-10-16
DE4234874A DE4234874C2 (en) 1992-10-16 1992-10-16 Cooling device with external air-induced heat extraction from a water cycle

Publications (2)

Publication Number Publication Date
EP0595106A1 EP0595106A1 (en) 1994-05-04
EP0595106B1 true EP0595106B1 (en) 1995-05-10

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ID=6470598

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EP93116490A Expired - Lifetime EP0595106B1 (en) 1992-10-16 1993-10-12 Device for cooling with heat absorption caused by outer air in a water circuit

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EP (1) EP0595106B1 (en)
AT (1) ATE122449T1 (en)
DE (1) DE4234874C2 (en)
ES (1) ES2072167T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20040120A1 (en) * 2004-05-28 2004-08-28 Frigel Firenze Srl A COOLING SYSTEM AND A THERMAL CONVERTER
DE102011050956B4 (en) 2011-06-09 2014-05-22 Daniel Seufferheld cooling device
CN107763896A (en) * 2017-12-01 2018-03-06 青岛新欧亚能源有限公司 A kind of Split type air source heat pump system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344307C3 (en) * 1973-09-03 1982-07-08 Kessler & Luch Gmbh, 6300 Giessen Method and device for reducing fog formation through recooling systems in refrigerating machines
DE2725394C3 (en) * 1977-06-04 1980-04-10 Philips Patentverwaltung Gmbh, 2000 Hamburg Heat exchange device with two coolant lines
US4286435A (en) * 1978-10-02 1981-09-01 Carrier Corporation Hot gas defrost system
GB2041508A (en) * 1979-01-22 1980-09-10 Horstmann D Air conditioning
DE3007159A1 (en) * 1980-02-26 1981-09-10 Kraftwerk Union AG, 4330 Mülheim Power plant water cooling circuit - has water tanks, in parallel with turbine exhaust steam cooling circuit
JPS62102046A (en) * 1985-10-28 1987-05-12 Toshiba Corp Air conditioner
ATE130085T1 (en) * 1991-04-09 1995-11-15 Riello Condizionatori Sas COMBINED HEATING AND COOLING SYSTEM.

Also Published As

Publication number Publication date
EP0595106A1 (en) 1994-05-04
ATE122449T1 (en) 1995-05-15
DE4234874C2 (en) 1996-11-21
ES2072167T3 (en) 1995-07-01
DE4234874A1 (en) 1994-04-21

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