EP3044523B1 - Temperature control device - Google Patents
Temperature control device Download PDFInfo
- Publication number
- EP3044523B1 EP3044523B1 EP14765870.2A EP14765870A EP3044523B1 EP 3044523 B1 EP3044523 B1 EP 3044523B1 EP 14765870 A EP14765870 A EP 14765870A EP 3044523 B1 EP3044523 B1 EP 3044523B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature control
- tank
- control apparatus
- fluid medium
- mixing chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 claims description 42
- 239000012530 fluid Substances 0.000 claims description 35
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- 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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
Definitions
- the invention relates to a temperature control device, with a flow for supplying a consumer that can be connected to the flow with a fluid medium with a predefinable temperature and with a return that can be connected to the consumer for returning at least part of the fluid medium from the consumer to a mixing device, in which in a predeterminable quantity ratio the fluid medium of the return is mixed with a storage medium stored in a tank.
- Temperature control devices of this type are state of the art. These devices, which work in mixer valve technology, are often used to control the temperature of cooling liquids such as water / glycol mixtures, for example for spindle cooling in machine tools, for cooling switch cabinets or hydrostatic drives, for cooling or temperature control tasks in the printing industry, in laser technology, in medical technology and the same. Another area of application concerns the cooling of hydraulic fluids, for example in connection with hydrostatic drives.
- cooling liquids such as water / glycol mixtures
- Another area of application concerns the cooling of hydraulic fluids, for example in connection with hydrostatic drives.
- partial quantities of the medium flowing back from the consumer in the return flow pass through a 3/2-way valve in quantities depending on the cooling capacity requirement to a heat exchanger that is in heat exchange with the evaporator of a cooling unit and from there into the tank.
- a circulation pump the pressure delivery side of which is connected to the flow, sucks in fluid medium from the tank and mixes it with the rest of the medium flowing back via the return by means of a mixing device
- the object of the invention is to provide a temperature control device of the type under consideration, which is characterized by particularly favorable operating behavior.
- this object is achieved by a temperature control device which has the features of claim 1 in its entirety.
- An essential special feature of the invention is accordingly that the mixing device has at least one mixing chamber which, when the temperature control device is in operation, is arranged below the fill level of the tank containing the storage medium.
- the installation of a mixing chamber immersed in the tank enables targeted heat distribution with high energy efficiency. In addition, there is less need for external piping.
- the mixing device with its mixing chamber forms part of a submersible pump, which is at least partially arranged in the tank with its suction side below the fill level and the pressure output side, which leads to the flow, is preferably arranged above the fill level in the tank.
- the design of the circulation pump as a submersible pump arranged in the tank enables an increase in operational reliability in a particularly advantageous manner. While a dry-installed horizontal pump is provided as the circulating pump in the prior art, the sealless submersible pump avoids the susceptibility to failure that occurs in horizontal pumps with mechanical seals that are susceptible to fluid media, such as Contain ethylene or glycol.
- the direct installation of the mixing chamber on the submersible pump also results in a particularly low need for piping.
- the mixing chamber has at least one connection opening in the submersible pump housing, which opens into the storage space of the tank, the mixing device having at least one connection line as part of the return line, which leads from a distribution device into the mixing chamber.
- the distribution device can be formed by a 3/2-way valve that divides the return, depending on the cooling capacity requirement, into a volume flow flowing through the connecting line and a volume flow flowing through the heat exchanger of the cooling unit to the storage tank.
- the distribution device can be controlled by a control device which, depending on the temperature of the medium of the flow, forwards at least part of the fluid medium of the return to a cooling device, such as the heat exchanger of the cooling unit, and the other remaining part to the mixing chamber.
- a control device which, depending on the temperature of the medium of the flow, forwards at least part of the fluid medium of the return to a cooling device, such as the heat exchanger of the cooling unit, and the other remaining part to the mixing chamber.
- the cooling device advantageously has a compressor cooling system, the fluid medium of the return line cooled in this way being guided into the tank.
- the compressor cooling system has its own cooling circuit with a refrigerant which flows through a heat exchanger through which at least the part of the fluid medium of the return that is to be cooled is passed at the same time.
- the heat exchanger can be provided in the form of a plate heat exchanger which forms a functional unit with the evaporator of the compressor cooling system.
- the compressor cooling system can have at least one condenser and one compressor, as well as a dryer device which is arranged in the cooling circuit upstream of the evaporator assigned to the heat exchanger.
- the control device has a temperature regulator which controls a motor control valve in order to divide the fluid medium into a portion to be cooled by means of the cooling device and a portion that is fed to the mixing chamber.
- the motor control valve for example in the form of a 3/2-way valve, is controlled by the temperature controller as a function of the flow temperature measured by means of a temperature sensor.
- the compressor cooling system only needs to work when cold fluid medium is needed in the storage tank.
- the required cooling capacity can thus be adapted to requirements, so that a high level of energy efficiency can be achieved. Due to the adjustable cooling capacity, the desired temperature of the medium in the flow can be set very precisely to desired values with deviations that are less than +/- 0.3 K.
- the arrangement can be made such that several submersible pumps, preferably with different delivery capacities, are arranged in the tank in such a way that, depending on the submersible pumps put into operation, there are different flow temperatures for the fluid medium and / or different discharge quantities for the flow Allow fluid medium to reach. This enables a particularly energy-saving, needs-based adjustment.
- the tank can be provided with a fluid guide in its storage space.
- a fluid guide can be formed by chamber walls arranged in the tank, which form a kind of labyrinth for the flow path in the tank.
- the arrangement can furthermore be made such that, for uniform temperature control of the control device, in particular in the form of power electronics, it rests flat against a tank wall of the tank, preferably at least partially integrated into the outer casing of the tank.
- temperature control / cooling of the control device is therefore formed at the same time.
- the interface between the circuits 1 and 3 is formed by a plate heat exchanger 5, the primary side of which, which is assigned to the consumer circuit 1, can be traversed by fluid medium to be cooled from the consumer circuit 1, while the secondary side of the plate heat exchanger 5 is the evaporator for the cooling circuit formed by a compressor cooling unit 3 forms.
- the cooling circuit 3 has in the usual way an electric motor-driven compressor 7, the suction side of which is connected to the secondary side of the plate heat exchanger 5 serving as an evaporator and a condenser 9 is connected to the pressure side.
- the refrigerant reaches an expansion valve 13 via a dryer device 11 and from there to the secondary side of the plate heat exchanger 5 which forms the evaporator.
- the flow leading to the consumer (which is not shown) is denoted by 15 and the return flowing back from the consumer is denoted by 17.
- the flow 15 is connected to the pressure output side 19 of a circulating pump that can be operated by an electric motor 21.
- the circulation pump is formed by a submersible pump 23. This is installed in a storage tank 25 in such a way that fluid inlet openings 27 on the suction side of the submersible pump 23 are below the fill level of the tank 25.
- the pressure delivery side 19 of the submersible pump 23 is above the level of the storage tank 25.
- a temperature sensor 29 is arranged, which supplies a temperature controller 31 with a signal representing the flow temperature.
- the fluid medium flowing back from the consumer arrives from the return line 17 to a distribution device, which in the present case Example is formed by a 3/2-way valve 33.
- a distribution device which is designed as a motor control valve which can be controlled by the temperature controller 31 as a function of the flow temperature measured by the sensor 29 by means of a servomotor 35.
- the control valve 33 divides the fluid medium flowing via the return 17 into a portion that flows via the primary side of the plate heat exchanger 5 into the storage tank 25, see flow arrow 37, and a portion that leads via a connecting line 39 to a mixing chamber 41 . If the sensor 29 signals a low requirement for cooling capacity or no requirement for cooling capacity, the proportion flowing through the heat exchanger 5 is low or zero due to the setting of the control valve 33, while a correspondingly larger proportion flows via the connecting line 39 to the mixing chamber 41.
- the mixing chamber 41 which is shown in FIG Fig. 2 is shown separately, formed by a housing component of the pump housing of the submersible pump 23.
- the mixing chamber 41 is located at the suction-side end of the pump housing of the submersible pump 23 and is therefore, during operation, below the fill level of the storage tank 25.
- the mixing chamber 41 forms a housing cover 43 at the suction-side end of the housing of the submersible pump 23, so that the mixing chamber 41 is below the fill level of the storage tank 25 during operation.
- the lid 43 has the shape of a cone with an inner funnel 45 which forms the wall of the mixing chamber 41.
- a connection elbow 49 is attached to which the connecting line 39 is connected.
- the housing cover 43 forming the mixing chamber 41 has screw holes 51 for connecting screws for flanging the cover 43 to the pump housing.
- the compressor 7 of the compressor cooling system works in an advantageous manner only when cold medium is needed in the storage tank 25.
- the required cooling capacity can thus be adapted to the requirements, so that the greatest possible energy efficiency can be achieved.
- a plurality of submersible pumps 23 can be provided in the tank 25, which can optionally be put into operation. These can advantageously be submersible pumps 23 with different output capacities.
- a fluid guide can be provided in a particularly advantageous manner within the storage space of the tank 25, which is designed in such a way that an even supply of the to mixing medium takes place via the inlet openings 27 of the submersible pump 23.
- a kind of labyrinth can be formed by chamber walls 53 within the tank 25, which has a winding flow course forms for the medium cooled in the plate heat exchanger 5, which, as indicated by arrow 37, flows in.
- the tank 25 can simultaneously take on the function of temperature control of the associated control device for integrated cooling of the temperature controller 31, which, for example, has power electronics.
- a receiving space 55 can be formed on the outer casing of the tank 25, which forms a contact surface 57 on the tank wall for a flat contact of the relevant power electronics, the contact surface 57 forming a heat exchange surface.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Die Erfindung betrifft eine Temperiervorrichtung, mit einem Vorlauf zum Versorgen eines an den Vorlauf anschließbaren Verbrauchers mit einem Fluidmedium mit vorgebbarer Temperatur und mit einem an den Verbraucher anschließbaren Rücklauf zur Rückführung zumindest eines Teils des Fluidmediums vom Verbraucher an eine Mischeinrichtung, bei der in einem vorgebbaren Mengenverhältnis das Fluidmedium des Rücklaufs mit einem in einem Tank bevorrateten Vorratsmedium vermischt wird.The invention relates to a temperature control device, with a flow for supplying a consumer that can be connected to the flow with a fluid medium with a predefinable temperature and with a return that can be connected to the consumer for returning at least part of the fluid medium from the consumer to a mixing device, in which in a predeterminable quantity ratio the fluid medium of the return is mixed with a storage medium stored in a tank.
Temperiervorrichtungen dieser Art sind Stand der Technik. Diese in Mischerventiltechnik arbeitenden Vorrichtungen werden häufig zur Temperierung von Kühlflüssigkeiten, wie Wasser/Glykol-Mischungen, eingesetzt, beispielsweise zur Spindelkühlung bei Werkzeugmaschinen, zur Kühlung von Schaltschränken oder hydrostatischen Antrieben, für Kühl- oder Temperieraufgaben in der Druckindustrie, bei der Lasertechnik, der Medizintechnik und dergleichen. Ein weiteres Anwendungsgebiet betrifft die Kühlung von Hydraulikflüssigkeiten, z.B. in Verbindung mit hydrostatischen Antrieben. Bei diesen in Mischerventiltechnik arbeitenden Systemen gelangen Teilmengen des vom Verbraucher im Rücklauf zurückfließenden Mediums über ein 3/2-Wegeventil in vom Bedarf an Kühlleistung abhängigen Mengen zu einem mit dem Verdampfer eines Kühlaggregats im Wärmeaustausch stehenden Wärmetauscher und von diesem in den Tank. Eine Umwälzpumpe, deren Druckabgabeseite mit dem Vorlauf in Verbindung ist, saugt aus dem Tank Fluidmedium an und vermischt dieses mittels einer Mischeinrichtung mit dem übrigen, über den Rücklauf zurückfließenden Medium.Temperature control devices of this type are state of the art. These devices, which work in mixer valve technology, are often used to control the temperature of cooling liquids such as water / glycol mixtures, for example for spindle cooling in machine tools, for cooling switch cabinets or hydrostatic drives, for cooling or temperature control tasks in the printing industry, in laser technology, in medical technology and the same. Another area of application concerns the cooling of hydraulic fluids, for example in connection with hydrostatic drives. In these systems, which work in mixer valve technology, partial quantities of the medium flowing back from the consumer in the return flow pass through a 3/2-way valve in quantities depending on the cooling capacity requirement to a heat exchanger that is in heat exchange with the evaporator of a cooling unit and from there into the tank. A circulation pump, the pressure delivery side of which is connected to the flow, sucks in fluid medium from the tank and mixes it with the rest of the medium flowing back via the return by means of a mixing device.
Ausgehend von diesem Stand der Technik stellt sich die Erfindung die Aufgabe, eine Temperiervorrichtung der betrachteten Gattung zur Verfügung zu stellen, die sich durch ein besonders günstiges Betriebsverhalten auszeichnet.On the basis of this prior art, the object of the invention is to provide a temperature control device of the type under consideration, which is characterized by particularly favorable operating behavior.
Erfindungsgemäß ist diese Aufgabe durch eine Temperiervorrichtung gelöst, die die Merkmale des Patentanspruchs 1 in seiner Gesamtheit aufweist.According to the invention, this object is achieved by a temperature control device which has the features of claim 1 in its entirety.
Eine wesentliche Besonderheit der Erfindung besteht demgemäß darin, dass die Mischeinrichtung mindestens eine Mischkammer aufweist, die bei Betrieb der Temperiervorrichtung unterhalb des Füllstandsniveaus des das Vorratsmedium enthaltenden Tanks angeordnet ist. Der Einbau einer im Tank eingetauchten Mischkammer ermöglicht eine gezielte Wärmeverteilung bei hoher Energieeffizienz. Außerdem ergibt sich ein geringerer Bedarf an äußerer Verrohrung.An essential special feature of the invention is accordingly that the mixing device has at least one mixing chamber which, when the temperature control device is in operation, is arranged below the fill level of the tank containing the storage medium. The installation of a mixing chamber immersed in the tank enables targeted heat distribution with high energy efficiency. In addition, there is less need for external piping.
Bei besonders vorteilhaften Ausführungsbeispielen bildet die Mischeinrichtung mit ihrer Mischkammer Bestandteile einer Tauchpumpe, die zumindest teilweise im Tank angeordnet mit ihrer Ansaugseite unterhalb des Füllstandsniveaus liegt und deren Druckabgabeseite, die zum Vorlauf führt, vorzugsweise oberhalb des Füllstandsniveaus im Tank angeordnet ist. Die Ausbildung der Umwälzpumpe als im Tank angeordnete Tauchpumpe ermöglicht in besonders vorteilhafter Weise eine Erhöhung der Betriebssicherheit. Während beim Stand der Technik als Umwälzpumpe eine trocken aufgestellte Horizontalpumpe vorgesehen ist, vermeidet die dichtungslose Tauchpumpe die Störanfälligkeit, die bei Horizontalpumpen mit Gleitringdichtungen gegeben ist, die gegen Fluidmedien anfällig sind, die beispielsweise Ethylen oder Glykol enthalten. Durch den unmittelbaren Einbau der Mischkammer an die Tauchpumpe ergibt sich zudem ein besonders geringer Bedarf an Verrohrung.In particularly advantageous embodiments, the mixing device with its mixing chamber forms part of a submersible pump, which is at least partially arranged in the tank with its suction side below the fill level and the pressure output side, which leads to the flow, is preferably arranged above the fill level in the tank. The design of the circulation pump as a submersible pump arranged in the tank enables an increase in operational reliability in a particularly advantageous manner. While a dry-installed horizontal pump is provided as the circulating pump in the prior art, the sealless submersible pump avoids the susceptibility to failure that occurs in horizontal pumps with mechanical seals that are susceptible to fluid media, such as Contain ethylene or glycol. The direct installation of the mixing chamber on the submersible pump also results in a particularly low need for piping.
Bei besonders vorteilhaften Ausführungsbeispielen weist die Mischkammer mindestens eine Verbindungsöffnung im Tauchpumpengehäuse auf, die in den Vorratsraum des Tanks ausmündet, wobei die Mischeinrichtung als Teil des Rücklaufs mindestens eine Verbindungsleitung aufweist, die von einer Verteileinrichtung in die Mischkammer führt. Die Verteileinrichtung kann durch ein 3/2-Wegeventil gebildet sein, das den Rücklauf je nach Bedarf an Kühlleistung in einen über die Verbindungsleitung fließenden Volumenstrom und in einen Volumenstrom aufteilt, der über den Wärmetauscher des Kühlaggregats zum Vorratstank fließt.In particularly advantageous embodiments, the mixing chamber has at least one connection opening in the submersible pump housing, which opens into the storage space of the tank, the mixing device having at least one connection line as part of the return line, which leads from a distribution device into the mixing chamber. The distribution device can be formed by a 3/2-way valve that divides the return, depending on the cooling capacity requirement, into a volume flow flowing through the connecting line and a volume flow flowing through the heat exchanger of the cooling unit to the storage tank.
Die Verteileinrichtung kann von einer Steuereinrichtung ansteuerbar sein, die abhängig von der Temperatur des Mediums des Vorlaufs zumindest einen Teil des Fluidmediums des Rücklaufs an eine Kühleinrichtung, wie den Wärmetauscher des Kühlaggregats, und den anderen verbleibenden Teil an die Mischkammer weiterleitet.The distribution device can be controlled by a control device which, depending on the temperature of the medium of the flow, forwards at least part of the fluid medium of the return to a cooling device, such as the heat exchanger of the cooling unit, and the other remaining part to the mixing chamber.
Vorteilhafterweise weist die Kühleinrichtung ein Kompressor-Kühlsystem auf, wobei das derart gekühlte Fluidmedium des Rücklaufs in den Tank geführt ist.The cooling device advantageously has a compressor cooling system, the fluid medium of the return line cooled in this way being guided into the tank.
Bei besonders vorteilhaften Ausführungsbeispielen weist das Kompressor-Kühlsystem einen eigenen Kühlkreislauf mit einem Kältemittel auf, das einen Wärmetauscher durchströmt, durch den gleichzeitig zumindest der zu kühlende Teil des Fluidmediums des Rücklaufs hindurchgeführt ist. In besonders vorteilhafter Weise kann hierbei der Wärmetauscher in Form eines Plattenwärmetauschers vorgesehen sein, der mit dem Verdampfer des Kompressor-Kühlsystems eine Funktionseinheit bildet.In particularly advantageous exemplary embodiments, the compressor cooling system has its own cooling circuit with a refrigerant which flows through a heat exchanger through which at least the part of the fluid medium of the return that is to be cooled is passed at the same time. In a particularly advantageous manner, the heat exchanger can be provided in the form of a plate heat exchanger which forms a functional unit with the evaporator of the compressor cooling system.
Das Kompressor-Kühlsystem kann mindestens einen Kondensator und einen Kompressor aufweisen, sowie eine Trocknereinrichtung, die im Kühlkreislauf vor dem dem Wärmetauscher zugeordneten Verdampfer angeordnet ist.The compressor cooling system can have at least one condenser and one compressor, as well as a dryer device which is arranged in the cooling circuit upstream of the evaporator assigned to the heat exchanger.
Bei besonders vorteilhaften Ausführungsbeispielen weist die Steuereinrichtung einen Temperaturregler auf, der ein Motor-Regel-Ventil ansteuert, um das Fluidmedium in einen mittels der Kühleinrichtung zu kühlenden Anteil und einen Anteil aufzuteilen, der der Mischkammer zugeführt ist. Das Motor-Regel-Ventil, beispielsweise in Form eines 3/2-Wegeventils, wird dabei vom Temperaturregler in Abhängigkeit von der mittels eines Temperatursensors gemessenen Vorlauftemperatur angesteuert. Abhängig vom Signal des Temperatursensors braucht das Kompressor-Kühlsystem nur zu arbeiten, wenn im Vorratstank kaltes Fluidmedium gebraucht wird. Die benötigte Kühlleistung ist somit an den Bedarf anpassbar, so dass eine hohe Energieeffizienz erreichbar ist. Aufgrund der anpassbaren Kühlleistung lässt sich die gewünschte Temperatur des Mediums im Vorlauf sehr genau auf gewünschte Werte mit Abweichungen, die geringer sind als +/- 0,3 K, einstellen.In particularly advantageous exemplary embodiments, the control device has a temperature regulator which controls a motor control valve in order to divide the fluid medium into a portion to be cooled by means of the cooling device and a portion that is fed to the mixing chamber. The motor control valve, for example in the form of a 3/2-way valve, is controlled by the temperature controller as a function of the flow temperature measured by means of a temperature sensor. Depending on the signal from the temperature sensor, the compressor cooling system only needs to work when cold fluid medium is needed in the storage tank. The required cooling capacity can thus be adapted to requirements, so that a high level of energy efficiency can be achieved. Due to the adjustable cooling capacity, the desired temperature of the medium in the flow can be set very precisely to desired values with deviations that are less than +/- 0.3 K.
Mit besonderem Vorteil kann die Anordnung so getroffen sein, dass mehrere Tauchpumpen, vorzugsweise mit unterschiedlichem Abgabe-Leistungsvermögen, derart in dem Tank angeordnet sind, dass sich je nach in Betrieb genommenen Tauchpumpen unterschiedliche Vorlauftemperaturen für das Fluidmedium und/oder sich unterschiedliche Abgabemengen für das Vorlauf-Fluidmedium erreichen lassen. Dadurch ist eine besonders energiesparende, bedarfsgerechte Anpassung möglich.With particular advantage, the arrangement can be made such that several submersible pumps, preferably with different delivery capacities, are arranged in the tank in such a way that, depending on the submersible pumps put into operation, there are different flow temperatures for the fluid medium and / or different discharge quantities for the flow Allow fluid medium to reach. This enables a particularly energy-saving, needs-based adjustment.
Mit besonderem Vorteil kann bei Temperiervorrichtungen, insbesondere bei gemäß der Erfindung ausgebildeten Temperiervorrichtungen, für eine vergleichmäßigte Zufuhr von in der Mischkammer zu mischendem Fluid der Tank in seinem Vorratsraum mit einer Fluid-Führung versehen sein. Eine derartige Fluid-Führung kann durch im Tank angeordnete Kammerwände gebildet sein, die für den Strömungsweg im Tank eine Art Labyrinth bilden.In the case of temperature control devices, in particular in the case of temperature control devices designed according to the invention, it is particularly advantageous for a uniform supply of fluid to be mixed in the mixing chamber the tank can be provided with a fluid guide in its storage space. Such a fluid guide can be formed by chamber walls arranged in the tank, which form a kind of labyrinth for the flow path in the tank.
Bei insbesondere gemäß der Erfindung ausgebildeten Temperiervorrichtungen kann die Anordnung weiterhin so getroffen sein, dass für eine gleichförmige Temperierung der Steuereinrichtung, insbesondere in Form einer Leistungselektronik, diese flächig an einer Tankwand des Tanks anliegt, vorzugsweise zumindest teilweise in die Außenumhausung des Tanks integriert ist. Auf einfache und vorteilhafte Weise ist daher gleichzeitig eine Temperierung/Kühlung der Steuereinrichtung gebildet.In the case of temperature control devices designed in particular according to the invention, the arrangement can furthermore be made such that, for uniform temperature control of the control device, in particular in the form of power electronics, it rests flat against a tank wall of the tank, preferably at least partially integrated into the outer casing of the tank. In a simple and advantageous manner, temperature control / cooling of the control device is therefore formed at the same time.
Nachstehend ist die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels im Einzelnen erläutert. Es zeigen:
- Fig. 1
- eine schematische, teilweise in Symboldarstellung gezeichnete Darstellung eines Ausführungsbeispiels der erfindungsgemäßen Temperiervorrichtung;
- Fig. 2
- einen in natürlicher Größe einer praktischen Ausführungsform gezeichneten Längsschnitt der Mischkammer des Ausführungsbeispiels und
- Fig. 3
- in demgegenüber kleinerem Maßstab einen Querschnitt des Fluid-Vorratstank des Ausführungsbeispiels.
- Fig. 1
- a schematic representation, partly drawn in symbols, of an embodiment of the temperature control device according to the invention;
- Fig. 2
- a drawn in natural size of a practical embodiment longitudinal section of the mixing chamber of the embodiment and
- Fig. 3
- in contrast, on a smaller scale, a cross section of the fluid storage tank of the exemplary embodiment.
In
Im Verbraucherkreislauf 1 sind der zum Verbraucher (der nicht dargestellt ist) führende Vorlauf mit 15 und der vom Verbraucher rückfließende Rücklauf mit 17 bezeichnet. Für die Zufuhr des betreffenden Fluidmediums zum Verbraucher ist der Vorlauf 15 an die Druckabgabeseite 19 einer durch einen Elektromotor 21 betreibbaren Umwälzpumpe angeschlossen. Bei der erfindungsgemäßen Temperiervorrichtung ist die Umwälzpumpe durch eine Tauchpumpe 23 gebildet. Diese ist in einen Vorratstank 25 derart eingebaut, dass Fluid-Eintrittsöffnungen 27 der Ansaugseite der Tauchpumpe 23 unterhalb des Füllstandsniveaus des Tanks 25 liegen. Die Druckabgabeseite 19 der Tauchpumpe 23 liegt oberhalb des Füllstandsniveaus des Vorratstanks 25. An der Verbindungsstelle der Druckabgabeseite 19 mit dem Vorlauf 15 ist ein Temperatursensor 29 angeordnet, der einem Temperaturregler 31 ein die Vorlauftemperatur darstellendes Signal liefert.In the consumer circuit 1, the flow leading to the consumer (which is not shown) is denoted by 15 and the return flowing back from the consumer is denoted by 17. For the supply of the relevant fluid medium to the consumer, the
Das vom Verbraucher zurückfließende Fluidmedium, wie Kühlflüssigkeit, beispielsweise Wasser mit Zusätzen von Glykol oder Ethylen, oder Hydrauliköl, gelangt vom Rücklauf 17 zu einer Verteileinrichtung, die beim vorliegenden Beispiel durch ein 3/2-Wegeventil 33 gebildet ist. Dieses ist als Motor-Regelventil ausgebildet, das vom Temperaturregler 31 in Abhängigkeit von der vom Sensor 29 gemessenen Vorlauftemperatur mittels eines Stellmotors 35 ansteuerbar ist. Als Verteileinrichtung teilt das Regelventil 33 das über den Rücklauf 17 fließende Fluidmedium in einen Anteil, der über die Primärseite des Plattenwärmetauschers 5 in den Vorratstank 25 fließt, siehe Strömungspfeil 37, und in einen Anteil auf, der über eine Verbindungsleitung 39 zu einer Mischkammer 41 führt. Wenn der Sensor 29 einen geringen Bedarf an Kühlleistung oder keinen Bedarf an Kühlleistung signalisiert, ist aufgrund der Einstellung des Regelventils 33 der über den Wärmetauscher 5 fließende Anteil gering oder Null, während ein entsprechend größerer Anteil über die Verbindungsleitung 39 zur Mischkammer 41 strömt.The fluid medium flowing back from the consumer, such as cooling liquid, for example water with the addition of glycol or ethylene, or hydraulic oil, arrives from the
Bei der erfindungsgemäßen Temperiervorrichtung ist die Mischkammer 41, die in
Der Anteil des über den Rücklauf 17 rückfließenden Mediums, der keinen Kühlbedarf hat, gelangt über die Verbindungsleitung 39 unmittelbar in die Mischkammer 41 und wird mit dem übrigen Anteil, d.h. mit dem über den Wärmetauscher 5 in den Tank 25 einströmenden, gekühlten Medium innerhalb der Mischkammer 41 im Ansaugbereich der Tauchpumpe 23 vermischt. Wenn kein Bedarf an Kühlleistung vorhanden ist, strömt die gesamte Menge des Rücklaufs 17 über die Verbindungsleitung 39 in die Ansaugseite der Tauchpumpe 23. Bei Bedarf an Kühlleistung strömt ein entsprechend größerer Anteil über den Plattenwärmetauscher 5 in den Tank 25, aus dem über die Eintrittsöffnungen 27 der Ansaugseite der Tauchpumpe 23 ein entsprechender Anteil angesaugt und mit dem restlichen Anteil aus der Verbindungsleitung 39 vermischt wird.The portion of the medium flowing back via the
In vorteilhafter Weise arbeitet der Kompressor 7 des Kompressor-Kühlsystems nur dann, wenn im Vorratstank 25 kaltes Medium gebraucht wird. Die benötigte Kühlleistung ist somit an den Bedarf anpassbar, so dass größtmögliche Energieeffizienz erreichbar ist. Bei Anwendungsfällen, wo sich im Betrieb unterschiedliche Sollwerte der Vorlauftemperatur ergeben können und/oder unterschiedliche Abgabemengen für das Vorlauf-Fluidmedium erforderlich sein können, lassen sich mehrere Tauchpumpen 23 im Tank 25 vorsehen, die wahlweise in Betrieb setzbar sind. Mit Vorteil kann es sich dabei um Tauchpumpen 23 unterschiedlicher Abgabeleistungen handeln.The
Um für einen optimalen Mischvorgang innerhalb der Mischkammer 41 die Temperaturverteilung innerhalb des im Tank 25 befindlichen Mediums zu homogenisieren, kann in besonders vorteilhafter Weise innerhalb des Vorratsraums des Tanks 25 eine Fluid-Führung vorgesehen sein, die derart ausgeführt ist, dass eine vergleichmäßigte Zufuhr des zu mischenden Mediums über die Eintrittsöffnungen 27 der Tauchpumpe 23 erfolgt. Zu diesem Zweck kann, wie in
Mit besonderem Vorteil kann bei Temperiervorrichtungen, die in Mischerventiltechnik arbeiten und einen entsprechenden Vorratstank aufweisen, namentlich bei gemäß der vorliegenden Erfindung ausgebildeten Temperiervorrichtungen, der Tank 25 gleichzeitig die Funktion der Temperierung der zugehörigen Steuereinrichtung für eine integrierte Kühlung des beispielsweise eine Leistungselektronik aufweisenden Temperaturreglers 31 übernehmen. Hierfür kann an der Außenumhausung des Tanks 25 ein Aufnahmeraum 55 gebildet sein, der an der Tankwand eine Anlagefläche 57 für eine flächige Anlage der betreffenden Leistungselektronik bildet, wobei die Anlagefläche 57 eine Wärmeaustauschfläche bildet.With temperature control devices that work in mixer valve technology and have a corresponding storage tank, namely with temperature control devices designed according to the present invention, the
Claims (11)
- Temperature control apparatus, having a tank for storing a supply medium, with a mixing device and a flow (15) for supplying a consumer, which is connectable to the flow (15), with a fluid medium with predefinable temperature, and with a return (17), which is connectable to the consumer, for returning at least part of the fluid medium from the consumer to the mixing device (41) in which the fluid medium of the return (17) is mixed with the supply medium stored in the tank (25) in a predefinable quantity ratio, characterised in that the mixing device has at least one mixing chamber (41) which, during operation of the temperature control apparatus, is arranged below the filling level of the tank (25) with the supply medium.
- Temperature control apparatus according to claim 1, characterised in that the mixing device with its mixing chamber (41) are components of a submersible pump (23) which is arranged at least partially in the tank (25) with its inlet side located below the filling level and the pressure delivery side (19) of which, leading to the flow (15), is arranged in the tank (25), preferably above the filling level.
- Temperature control apparatus according to claim 1 or 2, characterised in that the temperature control apparatus has a distributing device (33), that the mixing chamber (41) has at least one connecting opening (47) in the submersible pump housing which discharges into the reservoir of the tank (25), and that the mixing device, as part of the return (17), has at least one connecting cable (39) which leads from the distributing device (33) into the mixing chamber (41).
- Temperature control apparatus according to claim 3, characterised in that the temperature control apparatus has a control device (31) and that the distributing device (33) can be controlled by the control device (31) in order, depending on the temperature of the medium of the flow (15), to transfer at least a portion of the fluid medium of the return (17) to a cooling device (3, 5) and the remaining other portion to the mixing chamber (41).
- Temperature control apparatus according to one of the preceding claims, characterised in that the cooling device (3, 5) has a compressor cooling system (3) and that the fluid medium of the return (17) cooled in this manner is routed into the tank (25).
- Temperature control apparatus according to claim 5, characterised in that the compressor cooling system has its own cooling circuit (3) with a refrigerant which flows through a heat exchanger (5), through which at least the portion of the fluid medium of the return (17) which is to be cooled is routed at the same time.
- Temperature control apparatus according to one of claims 5 or 6, characterised in that the compressor cooling system has at least one condenser (9) and one compressor (7) as well as a drying device (11).
- Temperature control apparatus according to one of claims 4 to 7, characterised in that the control device has a temperature controller (31) which controls a motorised control valve (33, 35) for the purpose of splitting the fluid medium into an amount to be cooled by means of the cooling device (3, 5) and an amount which is routed to the mixing chamber (41).
- Temperature control apparatus according to one of the preceding claims, characterised in that a plurality of submersible pumps (23), preferably with varying delivery capacity, are arranged in the tank (25) in such a manner that different flow temperatures can be achieved for the fluid medium and/or different delivery quantities can be achieved for the flow fluid medium.
- Temperature control apparatus, in particular according to one of the preceding claims, characterised in that the tank (25) is provided in its reservoir with a fluid guide (53) for a homogenised supply of fluid which is to be mixed in the mixing chamber (41).
- Temperature control device according to one of claims 4 to 10, characterised in that for homogeneous temperature control of the control device (31), in particular in the form of power electronics, said power electronics rest flat on a tank wall (57) of the tank (25), preferably integrated at least partially in the outer enclosure (55) of the tank (25).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013015368.9A DE102013015368A1 (en) | 2013-09-11 | 2013-09-11 | tempering |
PCT/EP2014/002397 WO2015036106A1 (en) | 2013-09-11 | 2014-09-04 | Temperature control device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3044523A1 EP3044523A1 (en) | 2016-07-20 |
EP3044523B1 true EP3044523B1 (en) | 2021-03-24 |
Family
ID=51539230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14765870.2A Active EP3044523B1 (en) | 2013-09-11 | 2014-09-04 | Temperature control device |
Country Status (4)
Country | Link |
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US (1) | US10006676B2 (en) |
EP (1) | EP3044523B1 (en) |
DE (1) | DE102013015368A1 (en) |
WO (1) | WO2015036106A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020034594A1 (en) * | 2018-08-16 | 2020-02-20 | 北京航天动力研究所 | Skid-mounted depressurization system |
CN111023606A (en) * | 2019-12-27 | 2020-04-17 | 无锡溥汇机械科技有限公司 | Large-flow small-temperature-difference precise temperature control heat exchange system |
US10966349B1 (en) * | 2020-07-27 | 2021-03-30 | Bitfury Ip B.V. | Two-phase immersion cooling apparatus with active vapor management |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3635286A (en) * | 1969-12-29 | 1972-01-18 | Prvni Brnenska Strojirna | Storage tank for liquid metal |
DE2944273C2 (en) * | 1979-11-02 | 1982-06-16 | Rudolf 6050 Offenbach Hagedorn | Heat exchanger with a closed cylindrical container |
EP0069172A1 (en) * | 1981-06-12 | 1983-01-12 | THORN EMI Domestic Appliances Limited | Central heating systems |
DE3714771A1 (en) * | 1987-05-04 | 1988-12-01 | Bayerische Motoren Werke Ag | Arrangement of air-conditioning ducts in motor vehicles |
JP2694515B2 (en) * | 1995-03-01 | 1997-12-24 | エス・ティエス株式会社 | Cooling system |
DE19708442A1 (en) * | 1997-03-01 | 1998-09-03 | Hella Kg Hueck & Co | Air conditioning system for the interior of a vehicle |
DE19755286C2 (en) * | 1997-12-12 | 2002-06-20 | Messer Griesheim Gmbh | Process for cooling a heat transfer medium |
DE29921647U1 (en) * | 1999-12-09 | 2000-02-17 | TermoTek Laserkühlung GmbH, 77836 Rheinmünster | Cooling device for a laser |
KR100567491B1 (en) * | 2002-02-12 | 2006-04-03 | 마츠시타 덴끼 산교 가부시키가이샤 | Heat pump water heater |
DE102004041252A1 (en) * | 2004-08-26 | 2006-03-02 | Thermo Electron (Karlsruhe) Gmbh | tempering |
US8025097B2 (en) * | 2006-05-18 | 2011-09-27 | Centipede Systems, Inc. | Method and apparatus for setting and controlling temperature |
-
2013
- 2013-09-11 DE DE102013015368.9A patent/DE102013015368A1/en not_active Withdrawn
-
2014
- 2014-09-04 EP EP14765870.2A patent/EP3044523B1/en active Active
- 2014-09-04 US US14/913,705 patent/US10006676B2/en active Active
- 2014-09-04 WO PCT/EP2014/002397 patent/WO2015036106A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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EP3044523A1 (en) | 2016-07-20 |
WO2015036106A1 (en) | 2015-03-19 |
DE102013015368A1 (en) | 2015-03-12 |
US10006676B2 (en) | 2018-06-26 |
US20160209086A1 (en) | 2016-07-21 |
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