EP2664868A2 - Heat pump apparatus and evaporator for a heat pump device - Google Patents

Heat pump apparatus and evaporator for a heat pump device Download PDF

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Publication number
EP2664868A2
EP2664868A2 EP13002529.9A EP13002529A EP2664868A2 EP 2664868 A2 EP2664868 A2 EP 2664868A2 EP 13002529 A EP13002529 A EP 13002529A EP 2664868 A2 EP2664868 A2 EP 2664868A2
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EP
European Patent Office
Prior art keywords
evaporator
refrigerant
heat pump
heat
fins
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.)
Granted
Application number
EP13002529.9A
Other languages
German (de)
French (fr)
Other versions
EP2664868B1 (en
EP2664868A3 (en
Inventor
Steffen Smollich
Manuel Grätz
Jens Dreyer
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.)
Stiebel Eltron GmbH and Co KG
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Stiebel Eltron GmbH and Co KG
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Publication of EP2664868A2 publication Critical patent/EP2664868A2/en
Publication of EP2664868A3 publication Critical patent/EP2664868A3/en
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Publication of EP2664868B1 publication Critical patent/EP2664868B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B39/02—Evaporators
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers

Definitions

  • the present invention relates to a heat pump device and an evaporator for a heat pump device.
  • Heat pumps are used, for example, for heating heating water.
  • the heat generated by the heat pump is transferred to a heating medium, for example by means of a condenser.
  • the heat pump generates heat by condensation of refrigerant under high pressure and thus at high temperature, while the heat generated thereby is delivered to a heat transfer medium (heating water), for example in a condenser.
  • the condenser the refrigerant is liquefied and then expanded in a throttle body, for example in an expansion valve. Upon absorption of ambient heat, it then evaporates in the evaporator.
  • the gaseous refrigerant is then fed to a compressor and compressed in the compressor.
  • the compressed refrigerant is then supplied to the condenser, in which the refrigerant is in turn liquefied and thereby emits heat to a heat transfer medium.
  • the present invention relates to an air-refrigerant evaporator unit having at least a first pipe for refrigerant having a first port as a refrigerant inlet and a second port as Kälternittelablauf, wherein the tube absorbs heat and releases to the refrigerant, a plurality of fins and a second tube as Replacement length with a third and a fourth connection, which absorbs heat from the refrigerant and can release it again.
  • the evaporator unit may optionally have end blades which are longer than the other blades.
  • the end lamellae or the extended lamellar plates serve for the mechanical reception of an immersion length integrated in the evaporator.
  • the evaporator unit may optionally have a defrosting tray of sheet metal, plastic or EPS foamed.
  • the evaporator unit may have the Ableylange and / or the Abtauwanne in the lower region.
  • the evaporator unit may have a pipe guide in its lower third.
  • the invention also relates to an air-refrigerant evaporator having a first conduit for refrigerant for absorbing heat by evaporation of the refrigerant and a second conduit with refrigerant for emitting heat by subcooling the liquid refrigerant.
  • the evaporator may include a plurality of fins which are thermally coupled only to the first conduit to facilitate vaporization of the refrigerant.
  • the invention also relates to a heat pump device with a fin tube heat exchanger as evaporator and subcooler coil for heating a condensate tray for the evaporator.
  • the subcooler coil is provided in or on the evaporator and serves to heat the condensate tray and / or condensate located in the condensate tray.
  • the heat pump device includes an evaporator mechanically connected to the subcooler coil.
  • the evaporator may have a plurality of fins, wherein the subcooler coil is connected to some of the fins.
  • the subcooler coil is only connected to some of the fins but not to all fins.
  • the subcooler coil and advantageously an evaporator injection line, is connected at one location to one of the fins to minimize vibration transfer from the refrigerant from the refrigerant circuit to the tubes of the subcooler coil.
  • the present invention is based on the finding that, for example, in an air-water heat pump apparatus, an evaporator with a finned tube heat exchanger is used.
  • an evaporator with a finned tube heat exchanger is used.
  • the evaporator is constructed from a plurality of rows of tubes, for example in the direction of flow of the air one behind the other, the evaporator is typically provided with end lamellae for mechanical stabilization of the tubes. These end blades are used in particular to provide attachment points for the pipes.
  • a condensate tray may be provided which serves to catch the condensate forming during operation or during the defrosting of the heat pump device.
  • the invention serves to provide an improved way of heating the condensate tray.
  • heat from the refrigeration circuit can be used.
  • an evaporator is provided, which is another cooling coil to heat the Kons nsatwanne and / or the condensate therein.
  • a further cooling coil consisting of at least one bent tube is provided.
  • the Endlamellen be designed so that they also serve to hold the additional cooling coil.
  • Fig. 1 shows a schematic representation of a heat pump device according to a first embodiment.
  • the heat pump apparatus comprises a compressor 10, a condenser 20, an evaporator 30, a first electronic expansion valve 40, optionally a filter drier 70, optionally a further electronic expansion valve 80, optionally an economizer 60, an evaporator 30, a four- / two-way valve 50 and a Swap 90 on.
  • the compressor 10 serves to compress gaseous coolant.
  • the compressor may have a steam injection.
  • the condenser 20 serves to liquefy the refrigerant and to transfer the heat released thereby to a heating medium such as heating water.
  • the heat pump device further optionally has a valve 3, a sight glass 2 and injection capillaries 4.
  • An evaporator unit consists of the evaporator 30 and advantageously has a fan or fan 31, which blows air through the evaporator 30.
  • the evaporator unit or the evaporator 30 may include a defrosting trough 100, which may be heated by, for example, the defrosting tray 90.
  • the heat pump device can be operated in a heating mode H or in a defrosting mode A.
  • the direction of the refrigerant within the refrigerant circuit is indicated by the arrows H in the heating mode and by the arrows A in the defrosting mode.
  • the heat pump according to the invention is for example an air-water heat pump.
  • the defrosting length 90 which is used to heat the defrosting trough 100 of the evaporator, is part of the refrigeration cycle.
  • liquid refrigerant flows in the Ab (2004).
  • a heating of the defrosting trough of the evaporator is particularly useful at outside temperatures of below 0 ° C, because accumulating condensate can freeze.
  • the refrigerant used may be R407C, R410A, R290, R744 or R134a.
  • Fig. 2a, 2b , and 2c show various views of an evaporator according to a second embodiment.
  • the evaporator according to the second embodiment may be used in the heat pump apparatus according to the first embodiment.
  • the evaporator 30 has a first line 36 with an inlet connection 34 and an outlet connection 35.
  • the conduit 36 extends in a plurality of turns within the evaporator 30.
  • the conduit 36 may include a venturi manifold 37.
  • a plurality of fins 32 are typically provided.
  • the lamellae 32 preferably form a lamella packet which ends on the right and left, each with an end plate 33.
  • the end plates 33 have extensions 33a at their first end.
  • a Ableylange 90 with an inlet 91 and a drain 92 is provided in the lower part of the distributor.
  • This Ableylange 90, the Ableylange 90 according to the first embodiment of Fig. 1 correspond.
  • liquid refrigerant flows in the Ableylange 90.
  • the Ableylange 90 essentially represents a second line, which can be maintained for example by the extended portions 33 a of the lamella plates.
  • the second line 90 may be provided, for example, in the lower region of the evaporator.
  • the evaporator 30 is provided in cross section and a defrosting trough 100.
  • Fig. 2d shows the fins 32 of the evaporator 30 in an enlarged detail.
  • the fins 32 are so close to each other that they are not shown.
  • the line 36 preferably leads horizontally from a first end plate 33 through the slats 32 to the opposite end plate 33 and preferably back again.
  • the Ableylange 90 serves to absorb heat from the liquid refrigerant and preferably to the defrosting trough 100 deliver.
  • the piping is the second conduit, i. the line of Ab (2004)lange, provided in the lower part of the evaporator.
  • the Ableylange 90 may be configured, for example, as a subcooler coil and may for example be made of the same material or tubes, as the tubes of the first line, i. the pipes that carry the refrigerant through the evaporator.
  • the subcooler coil 90 may be structurally connected to at least one or two end fins 33, but without connection to the other fins 32 of the evaporator.
  • the connecting pipes 91, 92 of the subcooler coil and the replacement pipe and the injection pipe 43 of the evaporator are preferably laid so that they are connected to one of the end plates, so that a structural unit is formed.
  • the connection of the pipes is provided locally to the refrigerant circuit, so that any vibrations occurring in the refrigerant circuit are absorbed by the entire evaporator unit or by the evaporator.
  • the removal trough is attached to a housing part, such as a strut, a support or a sheet metal part, and the evaporator unit is placed on the defrosting trough.
  • the defrost pan is clamped to the evaporator unit, screwed, glued or otherwise advantageously removably connected to the evaporator unit.
  • the evaporator unit connected to the defrosting pan is advantageously used completely in a chassis of a heat pump during assembly.

Abstract

The heat pump apparatus has an air-refrigerant evaporator (30) which is provided with one conduit for refrigerant for absorbing the heat obtained by evaporation of refrigerant, and other conduit (90) for refrigerant for discharging the heat obtained by sub-cooling of the liquid refrigerant. The air-refrigerant evaporator is provided with several slats with an extension.

Description

Die vorliegende Erfindung betrifft eine Wärmepumpenvorrichtung sowie einen Verdampfer für eine Wärmepumpenvorrichtung.The present invention relates to a heat pump device and an evaporator for a heat pump device.

Wärmepumpen werden zum Beispiel zum Erwärmen von Heizungswasser verwendet. Hierbei wird die durch die Wärmepumpe erzeugte Wärme auf ein Heizungsträgermedium beispielsweise mittels eines Verflüssigers übertragen. Die Wärmepumpe erzeugt Heizwärme durch Kondensation von Kältemittel unter hohem Druck und damit bei hoher Temperatur, während die dabei erzeugte Wärme an ein Wärmeträgermedium (Heizungswasser) beispielsweise in einem Verflüssiger abgegeben wird. In dem Verflüssiger wird das Kältemittel verflüssigt und anschließend in einem Drosselorgan entspannt, z.B. in einem Expansionsventil. Unter Aufnahme von Umgebungswärme verdampft es anschließend im Verdampfer. Das gasförmige Kältemittel wird dann einem Verdichter zugeführt und im Verdichter komprimiert. Das komprimierte Kältemittel wird dann dem Verflüssiger zugeführt, in welchem das Kältemittel wiederum verflüssigt wird und dabei Wärme an ein Wärmeträgermedium abgibt.Heat pumps are used, for example, for heating heating water. Here, the heat generated by the heat pump is transferred to a heating medium, for example by means of a condenser. The heat pump generates heat by condensation of refrigerant under high pressure and thus at high temperature, while the heat generated thereby is delivered to a heat transfer medium (heating water), for example in a condenser. In the condenser, the refrigerant is liquefied and then expanded in a throttle body, for example in an expansion valve. Upon absorption of ambient heat, it then evaporates in the evaporator. The gaseous refrigerant is then fed to a compressor and compressed in the compressor. The compressed refrigerant is then supplied to the condenser, in which the refrigerant is in turn liquefied and thereby emits heat to a heat transfer medium.

Es ist somit eine Aufgabe der vorliegenden Erfindung, eine verbesserte Wärmepumpenvorrichtung sowie einen verbesserten Verdampfer für die Wärmepumpenvorrichtung vorzusehen.It is thus an object of the present invention to provide an improved heat pump apparatus and an improved evaporator for the heat pump apparatus.

Diese Aufgabe wird durch eine Wärmepumpenvorrichtung nach Anspruch 1 und durch einen Verdampfer nach Anspruch 5 gelöst.This object is achieved by a heat pump device according to claim 1 and by an evaporator according to claim 5.

Die vorliegende Erfindung betrifft eine Luft-Kältemittel-Verdampfereinheit mit mindestens einem ersten Rohr für Kältemittel mit einem ersten Anschluss als Kältemittelzulauf und einem zweiten Anschluss als Kälternittelablauf, wobei das Rohr Wärme aufnimmt und an das Kältemittel abgibt, einer Mehrzahl von Lamellen und einem zweiten Rohr als Abtauschlange mit einem dritten und einem vierten Anschluss, das Wärme aus dem Kältemittel aufnimmt und wieder abgeben kann.The present invention relates to an air-refrigerant evaporator unit having at least a first pipe for refrigerant having a first port as a refrigerant inlet and a second port as Kälternittelablauf, wherein the tube absorbs heat and releases to the refrigerant, a plurality of fins and a second tube as Replacement length with a third and a fourth connection, which absorbs heat from the refrigerant and can release it again.

Die Verdampfereinheit kann optional Endlamellen aufweisen, welche länger als die anderen Lamellen sind. Die Endlamellen bzw. die verlängerten Lamellenbleche dienen zur mechanischen Aufnahme einer in dem Verdampfer integrierten Abtauschlange. Die Verdampfereinheit kann optional eine Abtauwanne aus Blech, Kunststoff oder aus EPS geschäumt aufweisen. Die Verdampfereinheit kann die Abtauschlange und/oder die Abtauwanne im unteren Bereich aufweisen. Die Verdampfereinheit kann eine Rohrführung in ihrem unteren Drittel aufweisen.The evaporator unit may optionally have end blades which are longer than the other blades. The end lamellae or the extended lamellar plates serve for the mechanical reception of an immersion length integrated in the evaporator. The evaporator unit may optionally have a defrosting tray of sheet metal, plastic or EPS foamed. The evaporator unit may have the Abtauschlange and / or the Abtauwanne in the lower region. The evaporator unit may have a pipe guide in its lower third.

Die Erfindung betrifft ebenfalls einen Luft-Kältemittel-Verdampfer mit einer ersten Leitung für Kältemittel zur Aufnahme von Wärme durch Verdampfung des Kältemittels und eine zweite Leitung mit Kältemittel zur Abgabe von Wärme durch Unterkühlung des flüssigen Kältemittels. Optional kann der Verdampfer eine Mehrzahl von Lamellen aufweisen, welche thermisch nur mit der ersten Leitung gekoppelt sind, um eine Verdampfung des Kältemittels zu ermöglichen.The invention also relates to an air-refrigerant evaporator having a first conduit for refrigerant for absorbing heat by evaporation of the refrigerant and a second conduit with refrigerant for emitting heat by subcooling the liquid refrigerant. Optionally, the evaporator may include a plurality of fins which are thermally coupled only to the first conduit to facilitate vaporization of the refrigerant.

Die Erfindung betrifft ebenfalls eine Wärmepumpenvorrichtung mit einem Lamellenrohr-Wärmeübertrager als Verdampfer und Unterkühlerschlange zum Beheizen einer Kondensatwanne für den Verdampfer. Die Unterkühlerschlange ist im oder an dem Verdampfer vorgesehen und dient dazu, die Kondensatwanne und/oder in der Kondensatwanne befindliches Kondensat zu erwärmen.The invention also relates to a heat pump device with a fin tube heat exchanger as evaporator and subcooler coil for heating a condensate tray for the evaporator. The subcooler coil is provided in or on the evaporator and serves to heat the condensate tray and / or condensate located in the condensate tray.

Gemäß einem Aspekt der vorliegenden Erfindung weist die Wärmepumpenvorrichtung einen Verdampfer auf, der mechanisch mit der Unterkühlerschlange verbunden ist. Dazu kann der Verdampfer eine Mehrzahl von Lamellen aufweisen, wobei die Unterkühlerschlange mit einigen der Lamellen verbunden ist. Die Unterkühlerschlange ist jedoch nur mit einigen der Lamellen, nicht jedoch mit allen Lamellen, verbunden.According to one aspect of the present invention, the heat pump device includes an evaporator mechanically connected to the subcooler coil. For this purpose, the evaporator may have a plurality of fins, wherein the subcooler coil is connected to some of the fins. However, the subcooler coil is only connected to some of the fins but not to all fins.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist die Unterkühlerschlange und vorteilhaft eine Einspritzleitung des Verdampfers an einer Stelle mit einer der Lamellen verbunden, um eine Schwingungsübertragung vom Kältemittel vom Kältekreis auf die Rohre der Unterkühlerschlange zu minimieren.In accordance with another aspect of the present invention, the subcooler coil, and advantageously an evaporator injection line, is connected at one location to one of the fins to minimize vibration transfer from the refrigerant from the refrigerant circuit to the tubes of the subcooler coil.

Die vorliegende Erfindung basiert auf der Erkenntnis, dass beispielsweise bei einer Luft-Wasser-Wärmepumpenvorrichtung ein Verdampfer mit einem Lamellenrohr-Wärmeüber-trager verwendet wird. Hierbei können vorteilhaft senkrechte Aluminiumlamellen mit vorteilhaft rechtwinklig oder waagerecht dazu angeordneten Kupferrohren vorgesehen sein. Wenn der Verdampfer aus einer Mehrzahl von Reihen von Rohren, zum Beispiel in Strömungsrichtung der Luft hintereinanderliegend, aufgebaut ist, so wird der Verdampfer typischerweise mit Endlamellen zur mechanischen Stabilisierung der Rohre vorgesehen. Diese Endlamellen dienen insbesondere dazu, Befestigungspunkte für die Rohre vorzusehen. An einem Ende, zum Beispiel dem unteren Ende des Verdampfers, kann eine Kondensatwanne vorgesehen sein, welche zum Auffangen des sich beim Betrieb oder bei der Abtauung der Wärmepumpenvorrichtung bildenden Kondensates dient. Die Erfindung dient insbesondere dazu, einen verbesserten Weg zur Erwärmung der Kondensatwanne vorzusehen. Hierbei kann beispielsweise Wärme aus dem Kältekreis verwendet werden. Gemäß der Erfindung wird ein Verdampfer vorgesehen, welcher eine weitere Kühlschlange aufweist, um die Konde nsatwanne und/oder das darin befindliche Kondensat zu erwärmen. Somit wird eine weitere Kühlschlange, bestehend aus mindestens einem gebogenen Rohr, vorgesehen. Optional können die Endlamellen so ausgestaltet sein, dass sie auch zur Halterung der zusätzlichen Kühlschlange dienen.The present invention is based on the finding that, for example, in an air-water heat pump apparatus, an evaporator with a finned tube heat exchanger is used. In this case, it is advantageously possible to provide vertical aluminum lamellae with copper tubes that are advantageously arranged at right angles or horizontally. If the evaporator is constructed from a plurality of rows of tubes, for example in the direction of flow of the air one behind the other, the evaporator is typically provided with end lamellae for mechanical stabilization of the tubes. These end blades are used in particular to provide attachment points for the pipes. At one end, for example the lower end of the evaporator, a condensate tray may be provided which serves to catch the condensate forming during operation or during the defrosting of the heat pump device. In particular, the invention serves to provide an improved way of heating the condensate tray. In this case, for example, heat from the refrigeration circuit can be used. According to the invention, an evaporator is provided, which is another cooling coil to heat the Kons nsatwanne and / or the condensate therein. Thus, a further cooling coil, consisting of at least one bent tube is provided. Optionally, the Endlamellen be designed so that they also serve to hold the additional cooling coil.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Vorteile und Ausführungsbeispiele der Erfindung werden nachstehend unter Bezugnahme auf die Zeichnung näher erläutert.

Fig. 1
zeigt eine schematische Darstellung einer Wärmepumpenvorrichtung gemäß einem ersten Ausführungsbeispiel,
Fig. 2a bis 2c
zeigen verschiedene Ansichten eines Verdampfers gemäß einem zweiten Ausführungsbeispiel,
Fig. 2d
zeigt den Ausschnitt X des Verdampfers in einer vergrößerten Ansicht.
Advantages and embodiments of the invention are explained below with reference to the drawing.
Fig. 1
shows a schematic representation of a heat pump device according to a first embodiment,
Fig. 2a to 2c
show various views of an evaporator according to a second embodiment,
Fig. 2d
shows the detail X of the evaporator in an enlarged view.

Fig. 1 zeigt eine schematische Darstellung einer Wärmepumpenvorrichtung gemäß einem ersten Ausführungsbeispiel. Die Wärmepumpenvorrichtung weist einen Verdichter 10. einen Verflüssiger 20, einen Verdampfer 30, ein erstes elektronisches Expansionsventil 40, optional einen Filtertrockner 70, optional ein weiteres elektronisches Expansionsventil 80, optional einen Economiser 60, einen Verdampfer 30, ein Vier-/Zweiwegeventil 50 und eine Abtauschlange 90 auf. Der Verdichter 10 dient dazu, gasförmiges Kühlmittel zu verdichten. Optional kann der Verdichter über eine Dampfeinspritzung verfügen. Der Verflüssiger 20 dient dazu, das Kältemittel zu verflüssigen und die dabei freigesetzte Wärme an ein Heizmedium wie beispielsweise Heizungswasser zu übertragen. Fig. 1 shows a schematic representation of a heat pump device according to a first embodiment. The heat pump apparatus comprises a compressor 10, a condenser 20, an evaporator 30, a first electronic expansion valve 40, optionally a filter drier 70, optionally a further electronic expansion valve 80, optionally an economizer 60, an evaporator 30, a four- / two-way valve 50 and a Swap 90 on. The compressor 10 serves to compress gaseous coolant. Optionally, the compressor may have a steam injection. The condenser 20 serves to liquefy the refrigerant and to transfer the heat released thereby to a heating medium such as heating water.

Die Wärmepumpenvorrichtung weist ferner optional ein Ventil 3, ein Schauglas 2 und Einspritzkapillaren 4 auf. Eine Verdampfereinheit besteht aus dem Verdampfer 30 und weist vorteilhaft einen Ventilator bzw. Lüfter 31 auf, welcher Luft durch den Verdampfer 30 bläst. Die Verdampfereinheit oder der Verdampfer 30 kann eine Abtauwanne 100 aufweisen, welche beispielsweise durch die Abtauschlange 90 erwärmt werden kann.The heat pump device further optionally has a valve 3, a sight glass 2 and injection capillaries 4. An evaporator unit consists of the evaporator 30 and advantageously has a fan or fan 31, which blows air through the evaporator 30. The evaporator unit or the evaporator 30 may include a defrosting trough 100, which may be heated by, for example, the defrosting tray 90.

Die erfindungsgemäße Wärmepumpenvorrichtung kann in einer Heizbetriebsart H oder in einer Abtaubetriebsart A betrieben werden. Die Richtung des Kältemittels innerhalb des Kältemittelkreises wird im Heizbetrieb durch die Pfeile H und im Abtaubetrieb durch die Pfeile A angezeigt.The heat pump device according to the invention can be operated in a heating mode H or in a defrosting mode A. The direction of the refrigerant within the refrigerant circuit is indicated by the arrows H in the heating mode and by the arrows A in the defrosting mode.

Die erfindungsgemäße Wärmepumpe ist beispielsweise eine Luft-Wasser-Wärmepumpe.The heat pump according to the invention is for example an air-water heat pump.

Gemäß der Erfindung ist die Abtauschlange 90, welche zur Erwärmung der Abtauwanne 100 des Verdampfers verwendet wird, Teil des Kältekreislaufes. In der Abtauschlange 90 fließt flüssiges Kältemittel.According to the invention, the defrosting length 90, which is used to heat the defrosting trough 100 of the evaporator, is part of the refrigeration cycle. In the Abtauschlange 90 liquid refrigerant flows.

Eine Erwärmung der Abtauwanne des Verdampfers ist insbesondere sinnvoll bei Außentemperaturen von unter 0 °C , weil anfallendes Kondensat gefrieren kann.A heating of the defrosting trough of the evaporator is particularly useful at outside temperatures of below 0 ° C, because accumulating condensate can freeze.

Das verwendete Kältemittel kann R407C, R410A, R290, R744 oder R134a sein.The refrigerant used may be R407C, R410A, R290, R744 or R134a.

Fig. 2a, 2b, und 2c zeigen verschiedene Ansichten eines Verdampfers gemäß einem zweiten Ausführungsbeispiel. Der Verdampfer gemäß dem zweiten Ausführungsbeispiel kann in der Wärmepumpenvorrichtung gemäß dem ersten Ausführungsbeispiel verwendet werden. Der Verdampfer 30 weist eine erste Leitung 36 mit einem Einlaufanschluss 34 und einem Auslaufanschluss 35 auf. Die Leitung 36 erstreckt sich in einer Mehrzahl von Windungen innerhalb des Verdampfers 30. Die Leitung 36 kann einen Venturi-Verteiler 37 aufweisen. Senkrecht zu den Leitungen 36 sind typischerweise eine Mehrzahl von Lamellen 32 vorgesehen. Die Lamellen 32 bilden vorzugsweise ein Lamellenpaket, das rechts und links mit je einer Endlamelle 33 endet. Beispielsweise die Endlamellen 33 weisen an ihrem ersten Ende Verlängerungen 33a auf. Fig. 2a, 2b , and 2c show various views of an evaporator according to a second embodiment. The evaporator according to the second embodiment may be used in the heat pump apparatus according to the first embodiment. The evaporator 30 has a first line 36 with an inlet connection 34 and an outlet connection 35. The conduit 36 extends in a plurality of turns within the evaporator 30. The conduit 36 may include a venturi manifold 37. Perpendicular to the wires 36, a plurality of fins 32 are typically provided. The lamellae 32 preferably form a lamella packet which ends on the right and left, each with an end plate 33. For example, the end plates 33 have extensions 33a at their first end.

Beispielsweise im unteren Bereich des Verteilers ist eine Abtauschlange 90 mit einem Zulauf 91 und einem Ablauf 92 vorgesehen. Diese Abtauschlange 90 kann der Abtauschlange 90 gemäß dem ersten Ausführungsbeispiel von Fig. 1 entsprechen. Somit fließt flüssiges Kältemittel in der Abtauschlange 90. Die Abtauschlange 90 stellt im Wesentlichen eine zweite Leitung dar, welche beispielsweise durch die verlängerten Abschnitte 33a der Lamellenbleche gehalten werden können.For example, in the lower part of the distributor a Abtauschlange 90 with an inlet 91 and a drain 92 is provided. This Abtauschlange 90, the Abtauschlange 90 according to the first embodiment of Fig. 1 correspond. Thus, liquid refrigerant flows in the Abtauschlange 90. The Abtauschlange 90 essentially represents a second line, which can be maintained for example by the extended portions 33 a of the lamella plates.

Die zweite Leitung 90 kann beispielsweise im unteren Bereich des Verdampfers vorgesehen sein.The second line 90 may be provided, for example, in the lower region of the evaporator.

In Fig. 2b ist der Verdampfer 30 im Querschnitt sowie eine Abtauwanne 100 vorgesehen. Einige der Lamellen, beispielsweise die Endlamellen 33, weisen verlängerte Abschnitte 33a auf. Diese verlängerten Abschnitte 33a sind im Bereich der Abtauwanne 100 vorgesehen und können zum Abtauen der Abtauwanne verwendet werden.In Fig. 2b the evaporator 30 is provided in cross section and a defrosting trough 100. Some of the fins, for example the end fins 33, have extended portions 33a. These extended portions 33a are provided in the region of the defrosting trough 100 and can be used to defrost the defrosting trough.

Fig. 2d zeigt die Lamellen 32 des Verdampfers 30 in einer Ausschnittsvergrößerung. In der normalen Darstellung in Fig. 2a liegen die Lamellen 32 so dicht aneinander, dass sie nicht dargestellt sind. Die Leitung 36 führt vorzugsweise waagerecht von einer ersten Endlamelle 33 durch die Lamellen 32 zu der entgegengesetzten Endlamelle 33 und vorzugsweise wieder zurück. Fig. 2d shows the fins 32 of the evaporator 30 in an enlarged detail. In the normal representation in Fig. 2a the fins 32 are so close to each other that they are not shown. The line 36 preferably leads horizontally from a first end plate 33 through the slats 32 to the opposite end plate 33 and preferably back again.

Die Abtauschlange 90 dient dazu, Wärme von dem flüssigen Kältemittel aufzunehmen und vorzugsweise an die Abtauwanne 100 abzugeben.The Abtauschlange 90 serves to absorb heat from the liquid refrigerant and preferably to the defrosting trough 100 deliver.

Gemäß der Erfindung ist die Rohrführung der zweiten Leitung, d.h. der Leitung der Abtauschlange, im unteren Bereich des Verdampfers vorgesehen.According to the invention, the piping is the second conduit, i. the line of Abtauschlange, provided in the lower part of the evaporator.

Die Abtauschlange 90 kann beispielsweise als eine Unterkühlerschlange ausgestaltet sein und kann beispielsweise aus dem gleichen Material bzw. Rohren hergestellt werden, wie die Rohre der ersten Leitung, d.h. die Rohre, welche das Kältemittel durch den Verdampfer führen. Die Unterkühlerschlange 90 kann konstruktiv an zumindest einer oder zwei Endlamellen 33 verbunden sein, ohne jedoch eine Verbindung zu den anderen Lamellen 32 des Verdampfers aufzuweisen. Die Anschlussrohre 91, 92 der Unterkühlerschlange bzw. der Abtauschlange und die Einspritzleitung 43 des Verdampfers werden vorzugsweise so verlegt, dass diese mit einer der Endlamellen verbunden sind, so dass eine konstruktive Einheit gebildet wird. Damit ist die Anbindung der Rohre an den Kältekreis lokal vorgesehen, so dass eventuell auftretende Schwingungen des Kältekreises von der gesamten Verdampfereinheit oder vom Verdampfer aufgenommen werden.The Abtauschlange 90 may be configured, for example, as a subcooler coil and may for example be made of the same material or tubes, as the tubes of the first line, i. the pipes that carry the refrigerant through the evaporator. The subcooler coil 90 may be structurally connected to at least one or two end fins 33, but without connection to the other fins 32 of the evaporator. The connecting pipes 91, 92 of the subcooler coil and the replacement pipe and the injection pipe 43 of the evaporator are preferably laid so that they are connected to one of the end plates, so that a structural unit is formed. Thus, the connection of the pipes is provided locally to the refrigerant circuit, so that any vibrations occurring in the refrigerant circuit are absorbed by the entire evaporator unit or by the evaporator.

Gemäß einem Gedanken der Erfindung ist die Aubtauwanne an einem Gehäuseteil, wie einer Strebe, einer Stütze oder einem Blechteil angebracht und die Verdampfereinheit ist auf die Abtauwanne gesetzt.According to one aspect of the invention, the removal trough is attached to a housing part, such as a strut, a support or a sheet metal part, and the evaporator unit is placed on the defrosting trough.

In einer anderen Ausführungsversion ist die Abtauwanne an die Verdampfereinheit angeklemmt, angeschraubt, angeklebt oder anderweitig vorteilhaft abnehmbar mit der Verdampfereinheit verbunden. Die mit der Abtauwanne verbundene Verdampfereinheit wird bei einer Montage vorteilhafterweise komplett in ein Chassis einer Wärmepumpe eingesetzt.In another embodiment, the defrost pan is clamped to the evaporator unit, screwed, glued or otherwise advantageously removably connected to the evaporator unit. The evaporator unit connected to the defrosting pan is advantageously used completely in a chassis of a heat pump during assembly.

Claims (7)

Wärmepumpenvorrichtung,
mit einem Luft-Kältemittel-Verdampfer (30) mit einer ersten Leitung (36) für Kältemittel zur Aufnahme von Wärme durch Verdampfung des Kältemittels und einer zweiten Leitung (90) mit Kältemittel zur Abgabe von Wärme durch Unterkühlung des flüssigen Kältemittels.A heat pump apparatus,
with an air-refrigerant evaporator (30) having a first conduit (36) for refrigerant for absorbing heat by evaporation of the refrigerant and a second conduit (90) with refrigerant for releasing heat by subcooling the liquid refrigerant. Wärmepumpenvorrichtung nach Anspruch 1,
wobei der Verdampfer (30) eine Mehrzahl von Lamellen (32) aufweist, wobei mindestens eine der Lamellen (32) an einem ihrer Enden eine Verlängerung (33a) aufweist, wobei die Verlängerung (33a) der Lamelle zur Aufnahme der zweiten Leitung (90) dient.Heat pump device according to claim 1,
wherein the evaporator (30) comprises a plurality of fins (32), at least one of the fins (32) having an extension (33a) at one of its ends, the extension (33a) of the fins receiving the second conduit (90). serves. Wärmepumpenvorrichtung nach Anspruch 1 oder 2,
wobei die zweite Leitung (90) als Abtauschlange (90) ausgestaltet ist, durch welche Kältemittel fließt.Heat pump device according to claim 1 or 2,
wherein the second conduit (90) is configured as a defrosting passage (90) through which refrigerant flows. Wärmepumpenvorrichtung nach einem der Ansprüche 1 bis 3,
wobei die zweite Leitung (90) im unteren Bereich des Verdampfers (30) vorgesehen ist und der Verdampfer (30) eine Abtauwanne (100) im unteren Bereich aufweist.Heat pump device according to one of claims 1 to 3,
wherein the second conduit (90) is provided in the lower region of the evaporator (30) and the evaporator (30) has a defrosting trough (100) in the lower region. Wärmepumpenvorrichtung nach einem der Ansprüche 1 bis 3,
wobei die zweite Leitung (90) im unteren Bereich des Verdampfers (30) vorgesehen ist und der Verdampfer (30) auf einer Abtauwanne der Wärmepumpenvorrichtung angebracht ist.Heat pump device according to one of claims 1 to 3,
wherein the second conduit (90) is provided in the lower portion of the evaporator (30) and the evaporator (30) is mounted on a defrost pan of the heat pump apparatus. Luft-Kältemittel-Verdampfer für eine Wärmepumpenvorrichtung mit einem ersten Rohr (36) zum Durchleiten von Kältemittel und zum Aufnehmen von Wärme, einer Mehrzahl von Lamellen (32) und einer Unterkühlerschlange (90) zum Beheizen einer Kondensatwanne (100).Air-refrigerant evaporator for a heat pump device a first tube (36) for passing refrigerant and for receiving heat, a plurality of fins (32) and a subcooler coil (90) for heating a condensate tray (100). Verdampfereinheit nach Anspruch 5,
wobei mindestens eine der Lamellen (32) an einem Ende eine Verlängerung (32a) zur Aufnahme der Unterkühlerschlange (90) aufweist.Evaporator unit according to claim 5,
wherein at least one of the fins (32) has at one end an extension (32a) for receiving the subcooler coil (90).
EP13002529.9A 2012-05-15 2013-05-14 Heat pump apparatus and evaporator for a heat pump device Active EP2664868B1 (en)

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CN104296286B (en) * 2014-10-17 2017-05-03 江苏辛普森新能源有限公司 Heat source tower refrigerating and heating energy-saving equipment with ice storage and heat storage functions
CN108954980A (en) * 2018-06-21 2018-12-07 深圳市派沃新能源科技股份有限公司 A kind of finned evaporator, heat pump system and control method

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CN104296286B (en) * 2014-10-17 2017-05-03 江苏辛普森新能源有限公司 Heat source tower refrigerating and heating energy-saving equipment with ice storage and heat storage functions
EP3034674A1 (en) * 2014-12-17 2016-06-22 Miele & Cie. KG Device and method for providing heat for a laundry treatment device and laundry treatment device
CN108954980A (en) * 2018-06-21 2018-12-07 深圳市派沃新能源科技股份有限公司 A kind of finned evaporator, heat pump system and control method

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