EP2664868B1 - Heat pump apparatus and evaporator for a heat pump device - Google Patents
Heat pump apparatus and evaporator for a heat pump device Download PDFInfo
- Publication number
- EP2664868B1 EP2664868B1 EP13002529.9A EP13002529A EP2664868B1 EP 2664868 B1 EP2664868 B1 EP 2664868B1 EP 13002529 A EP13002529 A EP 13002529A EP 2664868 B1 EP2664868 B1 EP 2664868B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- refrigerant
- heat
- heat pump
- defrosting
- 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.)
- Active
Links
- 239000003507 refrigerant Substances 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000004781 supercooling Methods 0.000 claims 1
- 238000010257 thawing Methods 0.000 description 27
- 239000002826 coolant Substances 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 9
- 241000446313 Lamella Species 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 3
- 239000008236 heating water Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
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- 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
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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
- 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.
- Heat pumps are used, for example, for heating heating water.
- the heat generated by the heat pump is transferred to a heating carrier medium, for example by means of a condenser.
- the heat pump generates heat by condensing refrigerant under high pressure and thus at high temperature, while the heat generated in the process is transferred to a heat transfer medium (heating water), for example in a condenser.
- the refrigerant is liquefied in the condenser and then expanded in a throttle device, for example in an expansion valve. It then evaporates in the evaporator while absorbing ambient heat.
- the gaseous refrigerant is then fed to a compressor and compressed in the compressor.
- the compressed refrigerant is then fed to the condenser, in which the refrigerant is again liquefied and in the process gives off heat to a heat transfer medium.
- a coolant such as cold brine flows through the cooler.
- the cooler is shut off from the coolant circuit and only the coolant in the cooler is heated, which circulates through the cooler via a bypass line so that as little energy as possible is required for the defrosting process.
- a heat accumulator holds heat energy for defrosting the evaporator.
- a parallel branch with a shut-off valve runs between the outlet of the compressor and the inlet of the evaporator.
- the refrigerant flow can be conducted through the heat accumulator by means of the compressor through a switching valve.
- a heat pump which has a pair of air / coolant heat exchangers. Their outputs are connected to the supply line for the coolant, which are connected to the input of the compressor, the output of which is connected to the input of the heat exchanger (4) coolant / water and the output of which is connected to the return line of the coolant.
- the return line is divided into two branches, each of which is connected to an evaporation inlet of each of the heat exchangers (31, 32) air / coolant.
- the first branch (51) of the return line (5) of the coolant is formed as the first warming line (81), which connects to the first heat exchanger (31), before the inlet to the evaporation inlet (320) of the second heat exchanger (32) air / coolant. is coupled, and the second branch (52) of the return line (5) of the coolant before the inlet to the evaporation inlet (310) of the first heat exchanger (31) air / coolant is formed as the second heating line (82) that connects to the second heat exchanger (32) is coupled, and each of the branches (51, 52) of the return line (5) of the coolant can be closed.
- a refrigerant circuit for a heat pump which consists of a compressor (1), a condenser (4), at least one evaporator and an expansion valve (23, 23 '). These units are connected to the refrigerant circuit via a pipe system with monitoring devices arranged therein.
- the At least two evaporators are arranged in the circuit, the evaporator acting as a defrosting device being flowed through first by the refrigerant coming from the condenser (4) and the refrigerant then being fed to the evaporator serving to absorb energy.
- the two systems are reciprocal by the control means
- the air source heat pump includes a compressor (1), a heating condenser (3), a throttle (4), an evaporator (5) that absorbs heat from an outside air source, and a gas.
- the liquid separator (6) and the switching valve are connected to a heat pump circuit by a connecting line, and the circuit is filled with a refrigerant.
- a heated antifreeze heat exchanger tube (52), an antifreeze heat exchanger tube and the heat exchanger tube (51) for the original refrigerant evaporation of the evaporator have the same fin, and the antifreeze heat exchanger tube is connected to the heat supply.
- the condenser liquid outlet is located between the condenser and the inlet of the throttle.
- JP 2009 127 926 A shows a cooler with a cooling pipe.
- a large number of ribs penetrate the cooling tube.
- a lowermost cooling pipe is a bare pipe part through which the ribs do not penetrate, and at least the bare pipe part of the cooler is heated below the cooler.
- a heat transfer plate heated by the defrost heater is provided for defrost heating and the heat transfer plate is covered from above.
- the cooler is formed with a defrost heater and includes a close contact portion which is formed continuously with the cover portion and is in close contact with the bare pipe portion of the cooling pipe.
- a heat absorbing portion is in close contact with the heat generating surface of the defrost heater.
- JPS 5380042 shows a construction in which, to provide an evaporator effective for defrosting and cooling, an arrangement of fins at a constant pitch. Central pipes and heating pipes penetrate the ribs in a meandering manner.
- the heat pump device comprises a compressor, a condenser, an evaporator, an electronic expansion valve and a four / two-way valve, which are arranged in a refrigeration cycle.
- the evaporator has a first line for refrigerant to absorb heat by evaporation of the refrigerant and a second line with refrigerant to give off heat by subcooling the liquid refrigerant.
- the evaporator also has a plurality of fins (32) and a defrosting pan (100). At least one of the lamellas has an extension (32a) at one of its ends, which is used to receive the second line (90).
- the second line (90) is part of the refrigeration circuit, is designed as a defrosting coil (90) in which liquid refrigerant flows and is used to heat the defrosting pan (100).
- the heat pump device advantageously has an evaporator unit with at least one first pipe for refrigerant with a first connection as refrigerant inlet and a second connection as refrigerant outlet, the pipe absorbing heat and releasing it to the refrigerant, a plurality of fins and a second pipe as an exchange coil with a third and a fourth connection that absorbs heat from the refrigerant and can release it again.
- the evaporator unit of the heat pump device can optionally have end lamellae which are longer than the other lamellae.
- the end lamellas or the extended lamellar plates serve to mechanically accommodate the exchange coil integrated in the evaporator.
- the evaporator unit can optionally have a defrosting pan made of sheet metal, plastic or foamed from EPS.
- the evaporator unit can have the defrost coil and / or the defrost pan in the lower area.
- the evaporator unit can have a pipe guide in its lower third.
- the heat pump device advantageously has an air-refrigerant evaporator with a first line for refrigerant for absorbing heat by evaporation of the refrigerant and a second line with refrigerant for emitting heat by subcooling the liquid refrigerant.
- the evaporator can have a plurality of fins which are thermally coupled only to the first line in order to enable evaporation of the refrigerant.
- the invention advantageously also relates to a heat pump device with a lamellar tube heat exchanger as an evaporator and subcooler coil for heating a condensate pan for the evaporator.
- the subcooler coil is provided in or on the evaporator and is used to heat the condensate pan and / or the condensate located in the condensate pan.
- the heat pump device includes an evaporator mechanically connected to the subcooler coil.
- the evaporator can have a plurality of fins, with the subcooler coil being connected to some of the fins.
- the subcooler coil is only connected to some of the fins, not all of the fins.
- the subcooler coil and advantageously an injection line of the evaporator are connected at one point to one of the fins in order to minimize vibration transmission from the refrigerant from the refrigeration circuit to the tubes of the subcooler coil.
- the present invention is based on the knowledge that, for example, in an air-to-water heat pump device, an evaporator with a lamellar tube heat exchanger is used.
- vertical aluminum lamellae can advantageously be provided with copper tubes arranged advantageously at right angles or horizontally to them.
- the evaporator is typically provided with end lamellas for mechanical stabilization of the tubes. These end lamellas are used in particular to provide attachment points for the pipes.
- a condensate pan can be provided which serves to collect the condensate that forms during operation or during defrosting of the heat pump device.
- the invention serves in particular to provide an improved way of heating the condensate pan.
- heat from the cooling circuit can be used here.
- an evaporator is provided which has a further cooling coil in order to heat the condensate pan and / or the condensate located therein.
- a further cooling coil consisting of at least one bent tube, is thus provided.
- the end lamellas can be designed in such a way 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 device has a Compressor 10, a condenser 20, an evaporator 30, a first electronic expansion valve 40, optionally a filter dryer 70, optionally a further electronic expansion valve 80, optionally an economizer 60, an evaporator 30, a four- / two-way valve 50 and a defrosting coil 90.
- the compressor 10 is used to compress gaseous coolant.
- the compressor can optionally have vapor injection.
- the condenser 20 serves to liquefy the refrigerant and to transfer the heat released in the process to a heating medium such as heating water.
- the heat pump device also 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 ventilator or fan 31 which blows air through the evaporator 30.
- the evaporator unit or the evaporator 30 can have a defrosting trough 100, which can be heated, for example, by the defrosting coil 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 arrows H in heating mode and by arrows A in defrost mode.
- the heat pump according to the invention is, for example, an air-water heat pump.
- the defrosting coil 90 which is used to heat the defrosting pan 100 of the evaporator, is part of the refrigeration circuit. Liquid refrigerant flows in the exchange coil 90.
- Warming up the evaporator's defrosting pan is particularly useful when the outside temperature is below 0 ° C, because any condensate that accumulates can freeze.
- the refrigerant used can be R407C, R410A, R290, R744 or R134a.
- FIGS 2a, 2b , 2c and 2d show different views of an evaporator according to a second embodiment.
- the evaporator according to the second embodiment can be used in the heat pump device according to the first embodiment.
- the evaporator 30 has a first line 36 with an inlet connection 34 and an outlet connection 35.
- the line 36 extends in a plurality of turns within the evaporator 30.
- a plurality of fins 32 are typically provided perpendicular to the lines 36.
- the end lamellas 32 have extensions at their first end 32a.
- the line 36 can have a Venturi distributor 33.
- an exchange coil 90 with an inlet 91 and an outlet 92 is provided in the lower region of the distributor.
- This exchange queue 90 can be the exchange queue 90 according to the first embodiment of FIG Fig. 1 correspond. Liquid refrigerant thus flows in the exchange coil 90.
- the exchange coil 90 essentially represents a second line which can be held, for example, by the extended sections 32a of the lamellar plates.
- the second line 90 can be provided, for example, in the lower region of the evaporator.
- the evaporator 30 is provided in cross section and a defrosting pan 100 is provided.
- Some of the louvers, such as the end louvers 32, have elongated portions 32a. These extended sections 32a are provided in the area of the defrosting pan 100 and can be used to defrost the defrosting pan.
- the purpose of the defrosting coil 90 is to absorb heat from the liquid refrigerant and preferably to give it off to the defrosting pan 100.
- the pipe routing of the second line i.e. the line of the exchange coil, is provided in the lower region of the evaporator.
- the exchange coil 90 can be designed, for example, as a subcooler coil and can for example be made of the same material or pipes as the pipes of the first line, i.e. the pipes which carry the refrigerant through the evaporator.
- the subcooler coil 90 can be structurally connected to at least one or two end fins 32, but without being connected to the other fins 32 of the evaporator.
- the connecting pipes 91, 92 of the subcooler coil or the exchange coil and the injection line 43 of the evaporator are preferably laid in such a way that they are connected to one of the end lamellas, so that a structural unit is formed. In this way, the connection of the pipes to the refrigeration circuit is provided locally, so that any vibrations that may occur in the refrigeration circuit are absorbed by the entire evaporator unit or by the evaporator.
- the defrosting pan 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 pan.
- the defrosting trough is clamped, screwed, glued or otherwise advantageously detachably connected to the evaporator unit.
- the evaporator unit connected to the defrosting trough is advantageously completely inserted into a chassis of a heat pump during assembly.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Defrosting Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
Die vorliegende Erfindung betrifft eine Wärmepumpenvorrichtung 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.The present invention relates to a heat pump device. Heat pumps are used, for example, for heating heating water. Here, the heat generated by the heat pump is transferred to a heating carrier medium, for example by means of a condenser. The heat pump generates heat by condensing refrigerant under high pressure and thus at high temperature, while the heat generated in the process is transferred to a heat transfer medium (heating water), for example in a condenser. The refrigerant is liquefied in the condenser and then expanded in a throttle device, for example in an expansion valve. It then evaporates in the evaporator while absorbing ambient heat. The gaseous refrigerant is then fed to a compressor and compressed in the compressor. The compressed refrigerant is then fed to the condenser, in which the refrigerant is again liquefied and in the process gives off heat to a heat transfer medium.
Bei einem Verlahren gemäß
Bei einer Wärmepumpenanlage gemäß
Aus
Aus
Es ist somit eine Aufgabe der vorliegenden Erfindung, eine verbesserte Wärmepumpenvorrichtung vorzusehen.It is thus an object of the present invention to provide an improved heat pump device.
Diese Aufgabe wird durch eine Wärmepumpenvorrichtung nach Anspruch 1 gelöst.This object is achieved by a heat pump device according to claim 1.
Die Wärmepumpenvorrichtung umfasst einen Verdichter, einen Verflüssiger, einen Verdampfer, ein elektronisches Expansionsventil und ein Vier-/Zweiwegeventil, die in einem Kältekreislauf angeordnet sind. Der Verdampfer weist eine erste 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 auf. Weiterhin weist der Verdampfer eine Mehrzahl von Lamellen (32) und eine Abtauwanne (100) auf. Mindestens eine der Lamellen weist an einem ihrer Enden eine Verlängerung (32a) auf, die zur Aufnahme der zweiten Leitung (90) dient. Die zweite Leitung (90) ist ein Teil des Kältekreislaufes, ist als Abtauschlange (90) ausgestaltet, in der flüssiges Kältemittel fließt und wird zur Erwärmung der Abtauwanne (100) verwendet.The heat pump device comprises a compressor, a condenser, an evaporator, an electronic expansion valve and a four / two-way valve, which are arranged in a refrigeration cycle. The evaporator has a first line for refrigerant to absorb heat by evaporation of the refrigerant and a second line with refrigerant to give off heat by subcooling the liquid refrigerant. The evaporator also has a plurality of fins (32) and a defrosting pan (100). At least one of the lamellas has an extension (32a) at one of its ends, which is used to receive the second line (90). The second line (90) is part of the refrigeration circuit, is designed as a defrosting coil (90) in which liquid refrigerant flows and is used to heat the defrosting pan (100).
Vorteilhaft weist die Wärmepumpenvorrichtung eine Verdampfereinheit mit mindestens einem ersten Rohr für Kältemittel mit einem ersten Anschluss als Kältemittelzulauf und einem zweiten Anschluss als Kältemittelablauf, 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 heat pump device advantageously has an evaporator unit with at least one first pipe for refrigerant with a first connection as refrigerant inlet and a second connection as refrigerant outlet, the pipe absorbing heat and releasing it to the refrigerant, a plurality of fins and a second pipe as an exchange coil with a third and a fourth connection that absorbs heat from the refrigerant and can release it again.
Die Verdampfereinheit der Wärmepumpenvorrichtung kann in einem vorteilhaften Ausführungsbeispiel optional Endlamellen aufweisen, welche länger als die anderen Lamellen sind. Die Endlamellen bzw. die verlängerten Lamellenbleche dienen zur mechanischen Aufnahme der 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.In an advantageous exemplary embodiment, the evaporator unit of the heat pump device can optionally have end lamellae which are longer than the other lamellae. The end lamellas or the extended lamellar plates serve to mechanically accommodate the exchange coil integrated in the evaporator. The evaporator unit can optionally have a defrosting pan made of sheet metal, plastic or foamed from EPS. The evaporator unit can have the defrost coil and / or the defrost pan in the lower area. The evaporator unit can have a pipe guide in its lower third.
Vorteilhaft weist die der Wärmepumpenvorrichtung 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 heat pump device advantageously has an air-refrigerant evaporator with a first line for refrigerant for absorbing heat by evaporation of the refrigerant and a second line with refrigerant for emitting heat by subcooling the liquid refrigerant. Optionally, the evaporator can have a plurality of fins which are thermally coupled only to the first line in order to enable evaporation of the refrigerant.
Die Erfindung betrifft vorteilhaft 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 advantageously also relates to a heat pump device with a lamellar tube heat exchanger as an evaporator and subcooler coil for heating a condensate pan for the evaporator. The subcooler coil is provided in or on the evaporator and is used to heat the condensate pan and / or the condensate located in the condensate pan.
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.In accordance with one aspect of the present invention, the heat pump device includes an evaporator mechanically connected to the subcooler coil. To this end, the evaporator can have a plurality of fins, with the subcooler coil being connected to some of the fins. However, the subcooler coil is only connected to some of the fins, not all of the 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.According to a further aspect of the present invention, the subcooler coil and advantageously an injection line of the evaporator are connected at one point to one of the fins in order to minimize vibration transmission from the refrigerant from the refrigeration 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-Wärmeübertrager 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 Kondensatwanne 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 knowledge that, for example, in an air-to-water heat pump device, an evaporator with a lamellar tube heat exchanger is used. In this case, vertical aluminum lamellae can advantageously be provided with copper tubes arranged advantageously at right angles or horizontally to them. When the evaporator from a plurality of rows of tubes, for example one behind the other in the direction of air flow, the evaporator is typically provided with end lamellas for mechanical stabilization of the tubes. These end lamellas are used in particular to provide attachment points for the pipes. At one end, for example the lower end of the evaporator, a condensate pan can be provided which serves to collect the condensate that forms during operation or during defrosting of the heat pump device. The invention serves in particular to provide an improved way of heating the condensate pan. For example, heat from the cooling circuit can be used here. According to the invention, an evaporator is provided which has a further cooling coil in order to heat the condensate pan and / or the condensate located therein. A further cooling coil, consisting of at least one bent tube, is thus provided. Optionally, the end lamellas can be designed in such a way that they also serve to hold the additional cooling coil.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. 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 2d
- zeigen verschiedene Ansichten eines Verdampfers gemäß einem zweiten Ausführungsbeispiel,
- Fig. 1
- shows a schematic representation of a heat pump device according to a first embodiment,
- Figures 2a to 2d
- show different views of an evaporator according to a second embodiment,
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 also optionally has a valve 3, a
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 arrows H in heating mode and by arrows A in defrost 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
Eine Erwärmung der Abtauwanne des Verdampfers ist insbesondere sinnvoll bei Außentemperaturen von unter 0 °C, weil anfallendes Kondensat gefrieren kann.Warming up the evaporator's defrosting pan is particularly useful when the outside temperature is below 0 ° C, because any condensate that accumulates can freeze.
Das verwendete Kältemittel kann R407C, R410A, R290, R744 oder R134a sein.The refrigerant used can be R407C, R410A, R290, R744 or R134a.
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
Die zweite Leitung 90 kann beispielsweise im unteren Bereich des Verdampfers vorgesehen sein.The
In
Die Abtauschlange 90 dient dazu, Wärme von dem flüssigen Kältemittel aufzunehmen und vorzugsweise an die Abtauwanne 100 abzugeben.The purpose of the defrosting
Gemäß einem Ausführungsbeispiel der Erfindung ist die Rohrführung der zweiten Leitung, d.h. der Leitung der Abtauschlange, im unteren Bereich des Verdampfers vorgesehen.According to one embodiment of the invention, the pipe routing of the second line, i.e. the line of the exchange coil, is provided in the lower region 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 32 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
Gemäß einem Ausführungsbeispiel 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 embodiment of the invention, the defrosting pan 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 pan.
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 defrosting trough is clamped, screwed, glued or otherwise advantageously detachably connected to the evaporator unit. The evaporator unit connected to the defrosting trough is advantageously completely inserted into a chassis of a heat pump during assembly.
Claims (2)
- A heat pump apparatus,
comprising a compressor (10), a condenser (20), an evaporator (30), an electronic expansion valve (40) and a four-/two-way valve (50),
which are disposed in a refrigerant circuit,
wherein the evaporator (30) includes- a first conduit (36) for refrigerant for absorbing heat through evaporation of the refrigerant, and- a second conduit (90) with refrigerant for releasing heat through supercooling of the liquid refrigerant,wherein the evaporator (30) furtherincludes a plurality of fins (32) and a defrost tray (100), and at least one of the fins (32) includes an extension (32a) at one of its ends, which serves to receive the second conduit (90),wherein the second conduit (90) is part of the refrigerant circuit,
is configured as a defrost coil (90) in which liquid refrigerant flows, and is used to heat the defrost tray (100). - The heat pump apparatus according to claim 1,
wherein the second conduit (90) is provided in the lower section of the evaporator (30) and the evaporator (30) includes a defrost pan (100) in the lower section.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE202012004795U DE202012004795U1 (en) | 2012-05-15 | 2012-05-15 | Heat pump device and evaporator for a heat pump device |
Publications (3)
Publication Number | Publication Date |
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EP2664868A2 EP2664868A2 (en) | 2013-11-20 |
EP2664868A3 EP2664868A3 (en) | 2016-08-03 |
EP2664868B1 true EP2664868B1 (en) | 2021-03-17 |
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Application Number | Title | Priority Date | Filing Date |
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EP13002529.9A Active EP2664868B1 (en) | 2012-05-15 | 2013-05-14 | Heat pump apparatus and evaporator for a heat pump device |
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EP (1) | EP2664868B1 (en) |
DE (1) | DE202012004795U1 (en) |
Families Citing this family (4)
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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 |
DE102014118791A1 (en) * | 2014-12-17 | 2016-06-23 | Miele & Cie. Kg | Apparatus and method for providing heating power to a laundry treating appliance and laundry treating appliance |
CN106288482B (en) * | 2015-05-19 | 2019-03-12 | Tcl空调器(中山)有限公司 | Air conditioner |
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 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5380042A (en) * | 1976-12-24 | 1978-07-15 | Hitachi Ltd | Evaporator for refrigerator |
DE4321161C2 (en) * | 1993-06-25 | 2001-02-22 | Stiebel Eltron Gmbh & Co Kg | Heat pump system |
DE19644488A1 (en) * | 1996-10-25 | 1998-04-30 | Friedhelm Meyer | Method and device for defrosting a cooler in a refrigeration system |
ATE432452T1 (en) * | 2004-03-15 | 2009-06-15 | Stanislav Mach | HEAT PUMP |
DE102005018125A1 (en) * | 2005-04-20 | 2006-10-26 | Bernhard Wenzel | A method for defrosting evaporators in heat pump systems has each evaporator provided with a similar tubular defrost unit by which the evaporators are operated alternately |
CN101187515A (en) * | 2006-11-17 | 2008-05-28 | 陈则韶 | Wind source heat pump installed with defrosting heat exchanging tube |
JP2009127926A (en) * | 2007-11-22 | 2009-06-11 | Panasonic Corp | Cooler with defrosting heater and article storage device |
-
2012
- 2012-05-15 DE DE202012004795U patent/DE202012004795U1/en not_active Expired - Lifetime
-
2013
- 2013-05-14 EP EP13002529.9A patent/EP2664868B1/en active Active
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EP2664868A2 (en) | 2013-11-20 |
DE202012004795U1 (en) | 2013-08-20 |
EP2664868A3 (en) | 2016-08-03 |
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