EP3213012A1

EP3213012A1 - Refrigeration appliance with a heat exchanging element

Info

Publication number: EP3213012A1
Application number: EP15784354.1A
Authority: EP
Inventors: Oscar De la Rosa; Niels Liengaard; Sascha Steininger
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2014-10-29
Filing date: 2015-10-21
Publication date: 2017-09-06
Also published as: DE102014222108A1; CN107076483B; US20170307265A1; CN107076483A; US10302339B2; WO2016066489A1

Abstract

The invention relates to a refrigeration appliance (100) comprising a coolant circuit with a condenser (117), a heat cycle system (105) for heating an element of the refrigeration appliance (100), said heat cycle system (105) comprising a heat conducting area (107), also comprising a heat exchanger element (153) which comprises the condenser (117) and the heat conducting area (107). Said condenser (117) and the heat conducting area (107) in the heat exchanger element (153) are thermally coupled in order to transfer heat from the coolant circuit to the heat conducting area (107) of the heat cycle system (105).

Description

Refrigeration device with a heat exchange element

The present invention relates to a refrigeration device with a heat exchange element.

When operating a refrigerator, the interior of the refrigerator is cooled by a refrigeration cycle. During cooling, a reduction in the temperature inside the refrigeration device by the expenditure of mechanical work by components of the

Refrigeration cycle achieved. This creates heat at certain points of the refrigeration cycle, which must be effectively dissipated to ensure an advantageous efficiency of the refrigeration cycle and to ensure an advantageous cooling of the refrigerator.

It is the object of the present invention to provide a refrigeration device in which heat from the refrigeration cycle can be efficiently dissipated. This object is achieved by an object with the characteristics according to the

independent claim solved. Advantageous embodiments are the subject of the dependent claims, the description and the drawings.

According to one aspect, the object of the invention by a refrigerator with a refrigeration cycle with a condenser, with a heat circulation system for heating an element of the refrigerator, wherein the heat circulation system a

Includes Wärmeleitbereich, and with a heat exchange element, which the

Condenser and the Wärmeleitbereich includes, wherein the condenser and the Wärmeleitbereich are thermally coupled in the heat exchange element to emit heat from the refrigeration cycle to the Wärmeleitbereich the heat circulation system.

Thereby, the technical advantage is achieved that takes place by the thermal coupling of the condenser of the refrigeration cycle with the Wärmeleitbereich the heat circulation system in the heat exchange element, an efficient heat transfer from the refrigeration circuit to the Wärmeleitbereich the heat circulation system, and the heat, for example, from a heat transport substance in the heat circulation system can. The transferred heat can through the Heat circulation system, such as a thermosyphon or a heating tube, for example by a heat transport substance, transported to an element of the refrigerator and delivered to the element to heat the element.

An element of the refrigeration device can comprise a region or a component of the refrigeration device that is not actively cooled by the refrigeration cycle of the refrigeration device, and that is to be heated. The element may include, for example, the refrigerator door, the frame of the refrigerator, a surface area of the frame of the refrigerator, a power supply, or an evaporation tray of the refrigerator. In order to achieve liquefaction of the refrigerant during the condensation process in the refrigeration cycle, an amount of heat is released from the condenser. The amount of heat released by the condenser is transferred in the heat exchange element through the thermal coupling to the heat conduction region of the heat circulation system. The thermal coupling can be realized by a thermally conductive element of the heat exchange element, such as a thermally conductive metal element, which is arranged between the condenser and the Wärmeleitbereich.

The amount of heat transferred to the Wärmeleitbereich can be delivered, for example, to an existing heat transport substance of the heat circulation system, which can absorb the heat in the Wärmeleitbereich. The

Heat circulation system is designed to transport the heat absorbed to an element of the refrigerator, where the heat is needed, and to deliver the absorbed heat to this element of the refrigerator.

This ensures, among other things, that the heat generated during the cooling process is not released unused to the environment, but the resulting heat can be used to heat elements of the refrigerator, which require heat. In addition, by using the heat circulation system to remove heat from the condenser, effective cooling of the condenser can be achieved, thereby achieving a low condensing temperature of the refrigerant in the refrigeration cycle. The lower the liquefaction temperature of the refrigerant, the greater the efficiency of the compressor in the refrigeration cycle, and the more lower is the total energy consumption of the refrigerator. Thus, by the

Heat exchange element can be achieved efficient removal of heat from the condenser.

A refrigeration appliance is understood in particular to mean a domestic refrigeration appliance, that is to say a refrigeration appliance used for household purposes in households or in the gastronomy sector, and in particular for storing food and / or drinks at specific temperatures, such as, for example, a refrigerator

Freezer, a fridge freezer, a freezer or a wine fridge. In an advantageous embodiment of the refrigeration device, the heat exchange element comprises a condenser made of multi-port extruded tube.

This achieves the technical advantage that by using a

Condenser made of multi-port extruded tube (MPE condenser) a particularly effective heat transfer from the condenser is achieved on the Wärmeleitbereich the heat cycle.

An MPE condenser has a large internal surface area which allows for efficient heat transfer from the refrigerant to the surface of the MPE condenser. When there is a thermally conductive contact between the surface of the MPE condenser and the heat-conducting portion of the heat circulation system, such as e.g. by a thermally conductive metal compound, can be an effective

Heat transfer from the MPE condenser take place on the heat circulation system. In a further advantageous embodiment of the refrigeration device, the condenser comprises a cooling channel and the heat-conducting region comprises a heat channel, wherein the cooling channel is formed, a refrigerant of the refrigeration cycle in the

Heat transfer element to convey, and wherein the heat channel is adapted to convey a heat transport substance of the heat circulation system in the heat exchange element.

As a result, the technical advantage is achieved that through the cooling channel of the condenser and through the heat channel of the Wärmeleitbereichs a constant promotion of Refrigerant, or heat transport substance is achieved in the refrigerator. In addition, a spatial proximity between the refrigeration cycle and the heat circulation system is achieved by the arrangement of the cooling channel of the condenser and the heat channel of the heat-conducting in the heat exchange element. In the heat exchange element, a thermal coupling between the refrigerant in the cooling channel and the

Heat transport substance produced in the heat channel, whereby an effective

Heat transfer from the refrigerant to the heat transport substance can be achieved.

In a further advantageous embodiment of the refrigeration device, the cooling channel and the heat channel are arranged parallel to one another, wherein the refrigerant which can be conveyed in the cooling channel and the heat transport substance which can be conveyed in the heat channel are arranged in

mutually opposite flow directions through the cooling channel and through the heat channel are conveyed. Thereby, the technical advantage is achieved that by the parallel arrangement of

Cooling channel and heat channel effective heat transfer from the refrigeration cycle is made possible on the heat circulation system. By the opposite

Flow directions of the refrigerant in the cooling channel and the

Heat transport substance in the heat channel, an effective heat transfer between the two circuits is achieved, whereby the temperature difference between the condenser and the Wärmeleitbereich is kept low. This allows a constant heat transfer between the two circuits during the

Heat exchange process can be achieved. In a further advantageous embodiment of the refrigeration device, the cooling channel is separated from the heating channel by a thermally conductive partition wall.

As a result, the technical advantage is achieved that a strict separation between the two channels is ensured by the partition wall between the cooling channel and the heat channel, so that there is no physical exchange of refrigerant and heat transfer substance. Since the partition is thermally conductive, and

For example, consists of a metal such as aluminum, can still effectively heat flow from the refrigerant to the heat transport substance through the partition take place to ensure a beneficial heat exchange in the heat exchange element.

In a further advantageous embodiment of the refrigeration device includes the

Heat exchange element an essay, wherein the attachment is formed, the

To connect the heat exchange element with the refrigeration cycle and with the heat circulation system, wherein the refrigeration cycle comprises a refrigerant and wherein the

Heat cycle system comprises a heat transport substance.

As a result, the technical advantage is achieved that the dual function of the essay both the refrigeration cycle and the heat circulation system with the

Heat exchange element to connect, an effective heat exchange between the two circuits is made possible. In particular, the refrigerant of the refrigeration cycle through the attachment at a first position of the heat exchange element in the

Heat exchange element are introduced and at a second position of the

Heat exchange element are passed out of the heat exchange element.

The attachment may be designed such that the refrigerant of the refrigeration cycle through the attachment at a first position of the heat exchange element in the

Heat exchange element is introduced and the refrigerant is passed to another attachment at a further position of the heat exchange element from the heat exchange element. In this case, through the attachment at a second position of the

Heat exchange element heat transport substance are introduced from the heat circulation system in the heat exchange element. In a further advantageous embodiment of the refrigeration device, the attachment comprises a refrigerant space for receiving the refrigerant through a first opening and comprises a substance space for receiving the heat transport substance through a second opening, wherein the refrigerant space and the substance space are separated by a thermally conductive center web.

As a result, the technical advantage is achieved that the article both for the supply of the refrigerant from the refrigeration cycle, as well as for the supply of the

Heat transport substance from the heat circulation system is suitable, causing it to an effective heat transfer between the circuits comes. Through the first opening of the attachment, refrigerant can be conducted into the refrigerant space of the attachment to be subsequently supplied to the heat exchange element. Through the second opening of the attachment heat transfer substance into the substance space of the

Top are passed to then be supplied to the heat exchange element. Through the central web, a separation between the refrigerant space and the substance space is achieved in the essay, whereby a mixing of the refrigerant and the

Heat transport substance is prevented. Since the central web is thermally conductive, and consists for example of aluminum, can still effective heat conduction from the refrigerant in the refrigerant space to the heat transport substance in the

Substance room of the essay be ensured.

In a further advantageous embodiment of the refrigeration device comprises the

Heat transport substance an alkane, a fluorohydrocarbon or water, preferably isobutane, tetrafluoroethane or water, and more preferably water.

As a result, the technical advantage is achieved that an effective heat transfer in the heat circulation system can be ensured by the substances mentioned.

In a further advantageous embodiment of the refrigeration device includes the

Heat cycle system, a heat transport substance and includes a

Heat release region, wherein the Wärmeleitbereich is formed by the

Condenser of the heat exchange element received amount of heat to the heat transport substance in the heat circulation system to give the

To heat heat transport substance, wherein the heat circulation system is formed, the heated heat transport substance from the Wärmeleitbereich to the

To conduct heat discharge region, and wherein the heat dissipation region is adapted to deliver the amount of heat absorbed by the heat transfer substance to the element of the refrigeration device. As a result, the technical advantage is achieved that by the arrangement of

Heat circulation system, such as a thermosiphon or heating tube, an effective heat absorption in the Wärmeleitbereich, an effective transport of recorded Heat to the heat emitting area, and an effective delivery of the absorbed heat is ensured to the element of the refrigerator.

In a further advantageous embodiment of the refrigeration device includes the

Refrigeration cycle an active system with an evaporator, a compressor or a throttle body.

Thereby, the technical advantage is achieved that an effective refrigeration cycle can be realized by using an active system with said components, wherein at least one of said components is actively operated by electrical energy and thereby heat is generated, which is delivered to the heat circulation system.

In a further advantageous embodiment of the refrigeration device includes the

Heat cycle system a passive system with a thermosyphon or a

Heating pipe.

This achieves the technical advantage that, by using a passive system, an effective heat circulation system can be realized which can only be operated by a temperature gradient outside the heat circulation system and does not rely on the supply of electrical or mechanical energy from outside the heat circulation system.

In a further advantageous embodiment of the refrigeration device, the refrigeration device comprises an evaporation tray, wherein the heat circulation system is designed to deliver the amount of heat absorbed to the evaporation tray of the refrigeration appliance.

As a result, the technical advantage is achieved by the coupling of a

Heat circulation system, such as a thermosyphon or heating tube, with the

Evaporation tray of the refrigerator, an effective heating of the evaporation tray is achieved. The evaporation tray takes condensation water of the refrigerator, which arises during operation of the refrigerator by condensation of water from the ambient air through the evaporator of the refrigerator. By warming the

Evaporation tray accelerates the evaporation of condensation in the evaporation tray. In addition, by the of the heat circulation system to the Evaporative shell dissipated heat through the heat circulation system also the condensing temperature of the refrigerant can be lowered in the refrigeration cycle, resulting in an increase in efficiency of the refrigerator and a reduction in the energy consumption of the refrigerator. In a further advantageous embodiment of the refrigeration device includes the

Heat circulation system, a heat dissipation region, wherein the heat dissipation region comprises a thermally conductive element, which in thermal contact with the

Evaporation tray is to ensure effective heating of the evaporation tray.

As a result, the technical advantage is achieved by the contact of the

Heat release region is provided with a thermally conductive element, such as a surface-enlarging element such as fins, a particularly effective release of heat from the heat emitting area to the evaporation tray.

In a further advantageous embodiment of the refrigeration device that is

Heat cycle system is designed to deliver the absorbed amount of heat to the frame of the refrigerator. As a result, the technical advantage is achieved that an effective heating of the outer region of the refrigerator is made possible by the release of heat to the frame and at the same time comes an effective cooling of the refrigerant in the refrigeration cycle.

In a further advantageous embodiment of the refrigeration device that is

Heat cycle system formed, the amount of heat absorbed to a

Submit surface area of the frame of the refrigerator.

Thereby, the technical advantage is achieved that by the release of heat to the surface region of the frame condensation of water from the ambient air in the refrigerator can be prevented. The surface area of the frame is located near the refrigerator door. If the refrigerator door is opened, moist air may come into contact with the surface area of the frame, which may cause condensation of water at the surface area, and the not wanted. By heating the surface area of the frame, the condensation of water can be reduced or prevented.

Further embodiments will be explained with reference to the accompanying drawings. Show it:

Fig. 1 is a schematic representation of a refrigerator;

FIG. 2 is a schematic representation of a heat circulation system in a refrigeration appliance; FIG. Fig. 3 is a schematic representation of a condenser as a comparative example;

4 shows a schematic representation of an MPE pipe;

Fig. 5 is a schematic representation of an essay;

Fig. 6 is a schematic representation of a heat exchange element; and

Fig. 7 is a schematic representation of a refrigerator with an evaporation tray. Fig. 1 shows a refrigerator representative of a general refrigeration device 100 with a refrigerator door 101, through which the interior of the general refrigeration device 100 is closed, and with a frame 103rd

The refrigeration device 100 includes a refrigeration cycle with an evaporator, compressor, condenser and throttle body. The evaporator is a heat exchanger in which, after expansion, the liquid refrigerant is recovered by absorbing heat from the medium to be cooled, e.g. Air, is evaporated. The compressor is a mechanically operated component that draws refrigerant vapor from the evaporator and expels it at a higher pressure to the condenser. The condenser is a heat exchanger, in which after compression, the evaporated refrigerant by heat to an external

Cooling medium, for example air, is liquefied. The throttle body is a device for the continuous reduction of the pressure by cross-sectional constriction. The refrigerant is a fluid used for heat transfer in the cryogenic system is that absorbs heat at low temperatures and low pressure of the fluid and at higher temperature and higher pressure of the fluid gives off heat, which usually include changes in the state of the fluid are included.

FIG. 2 shows a schematic representation of a heat circulation system 105 with a heat transport substance in a refrigeration device 100, wherein the heat circulation system 105 comprises a heat-conducting region 107 and a heat-dissipating region 109.

Prerequisite for the operation of the heat circulation system 105 is a

Temperature difference between the two areas of the heat circulation system 105 to heat transfer through the heat transport substance in the

Heat cycle system 105 to allow. As the temperature outside of the

Wärmeleitbereichs 107 is greater than the temperature of the heat transport substance in the refrigerator 100, a quantity of heat is absorbed by the heat transport substance in the Wärmeleitbereich 107. The heated heat transport substance is through a substance line 1 1 1 to the heat-emitting portion 109 of

Heat cycle system 105 transported in the flow direction 1 13. Because the

Temperature outside the heat release region 109 is lower than the temperature of the heated heat transport substance, the amount of heat from the

Heat transport substance in the heat emitting region 109 to a region outside the heat emitting region 109 delivered.

Between the heat-conducting region 107 and the heat-dissipating region 109, the heat-circulating system 105 comprises an insulating region 15 to prevent a heat flow outside the heat-circulating system 105 between the two regions having different temperatures in the refrigerating device 100.

If the thermal cycle system 105 includes a thermosyphon, then the heat generated during operation of the refrigeration cycle in the refrigeration device 100 is applied to the

Wärmeleitbereich 107 of the heat circulation system 105 delivered to the

Heat transport substance to heat, whereby it evaporates and the gas rises in the substance line 1 1 1 upwards. In the heat release region 109, the heated heat transport substance releases the absorbed heat to the environment of the

Heat cycle system 105 and is thereby cooled and condensed. The cooled condensed heat transport substance flows down again due to gravity and collects in the Wärmeleitbereich 107th

3 shows as a comparative example a schematic representation of a condenser made of extruded MPE tube (MPE condenser). The condenser 1 17 includes a

Input pipe 1 19 and an output pipe 121, through which the refrigerant of the

Refrigeration circuit introduced into the condenser 1 17, or can be discharged. The condenser 17 includes an extruded MPE tube 123 through which refrigerant is passed and which has a scale-like structure. Between

maänderförmigen sections of the extruded MPE tube 123 slats 125 are mounted, the effective heat transfer through the condenser 1 17 to the

Environment allow.

The transition of the extruded MPE tube 123 to the input tube 1 19 and to the output tube 121 is realized by a respective attachment 127. The attachment 127 has on a front side an opening through which the input pipe 1 19, and the

Output pipe 121 is connected to the top 127. On the longitudinal side of the attachment 127, a gap is provided into which the MPE tube 123 can be inserted in order to realize a conclusive connection between the MPE tube 123 and the inlet tube 1 19 or the outlet tube 121.

Thus, heated refrigerant can be passed through the inlet pipe 1 19 through the extruded MPE tube 123 in the condenser 1 17 and through the exit pipe 121 again from the condenser 1 17. By the fins 125, an amount of heat from the refrigerant to the outside of the condenser 1 17 are discharged to achieve liquefaction of the refrigerant.

FIG. 4 shows a schematic representation of an MPE tube 123 according to FIG

present invention. The MPE tube 123 may comprise an extruded tube of one or several metals and may be aluminum. The MPE pipe 123 comprises a plurality of cooling channels 129 through which the refrigerant of the refrigeration cycle can flow and which are separated from one another by webs 131. The webs 131 stiffen the MPE tube 123 and make bending of the MPE tube 123 in

Maänderform possible. The MPE tube 123 also includes a plurality of heat channels 133 through which a heat transfer substance of a heat circulation system 105 can flow and which are also separated by webs 131 from each other. Between the heat channels 133 and the cooling channels 129 is a partition wall 135. The partition 135 prevents mixing of the refrigerant flowing through the cooling channels 129 with the refrigerant flowing through the heat channels 133 heat transport substance. The partition wall 135 is configured such that heat flow from the refrigerant in the refrigerant passages 129 through the partition wall 135 to the heat transport substance in the heat passages 133 is enabled.

Fig. 5 shows a schematic representation of an attachment 127 according to the present invention. The attachment 127 may comprise an extruded tube of one or several metals and may be made of aluminum. The attachment 127 has on a front side a first opening 137 through which an inlet pipe 1 19, and a

Output pipe 121 of the refrigeration cycle is connected to the top 127. Through the opening 137, refrigerant of the refrigeration cycle can flow into a refrigerant space 139 of the top 127.

In order to combine a part of the MPE tube 123 with a heat circulation system 105, the attachment 127 on the other front side has a second opening 141 through which an inlet tube 1 19, or an outlet tube 121 of the heat circulation system 105 is connected to the attachment 127 , Through the second opening 141 can

Heat transport substance of the heat circulation system 105 in a substance space 143 of the cap 127 flow.

In order to mix refrigerant in the refrigerant space 139 and

Heat transfer substance in the substance space 143 of the attachment 127 to prevent, between the refrigerant space 139 and the substance space 143, a central web 145 is attached. The central web 145 allows a physical separation between

Substance space 143 and refrigerant space 139. However, the middle web 145 is designed such that a heat flow from the refrigerant in the refrigerant space 139 through the central web 145 to the heat transport substance in the substance space 143 is made possible. So that the attachment 127 can be connected conclusively to the MPE tube 123, the attachment 127 has on one longitudinal side a slot 147 which is designed to receive the MPE tube 123. The slot 147 includes a refrigerant slot 149 through which the refrigerant space 139 of the cap 127 is connected to the refrigerant passages 129 of the MPE pipe 123 to flow refrigerant through the first port 137 through the refrigerant space 139 to the refrigerant passages 129 of the MPE pipe. To allow tube 123. The slot 147 also includes a substance slot 151, through which the substance space 143 of the attachment 127 is connected to the heat channels 133 of the MPE tube 123 to a flow of heat transport substance through the second opening 141 through the substance space 143 to the heat channels 133 of the MPE - To allow tube 123.

Fig. 6 shows a schematic representation of a heat exchange element according to the present invention with an MPE tube according to FIG. 4 and with an attachment according to FIG. 5. The heat exchange element 153 comprises a condenser 1 17 and a

Wärmeleitbereich 107, their separation through the partition wall 135 and through the

Middle web 145 is shown by a dividing line 155. The condenser 1 17 comprises an inlet pipe 1 19 and an outlet pipe 121, through which the refrigerant can be introduced into the condenser 1 17, or discharged. The condenser 17 and the heat-conducting region 107 comprise an extruded MPE tube 123 through which the refrigerant or heat-transport substance is passed and which has a scale-like structure. Between the maanderförmigen sections of the extruded MPE tube 123 fins 125 are attached. The transition of the extruded MPE tube 123 to the input tube 1 19 and to the output tube 121 is realized by a respective attachment 127. The attachment 127 has on a front side a first opening 137, through which the input tube 1 19, and the output tube 121 is connected to the attachment 127. On the longitudinal side of the attachment 127, a slot 147 is provided, in which the MPE tube 123 can be inserted in order to realize a conclusive connection between the MPE tube 123 and the inlet tube 1 19, or the outlet tube 121. The attachment 127 further comprises a second opening 141 into which a further input tube 157 and into which a further output tube 159 can be inserted. The further input pipe 157 and the further output pipe 159 are connected to the heat circulation system 105, so that the heat transport substance can be passed through the heat-conducting region 107.

Due to the partition wall 135 in the MPE tube 123 and due to the central web 145 in the attachment 127, a mixing of the flowing through the cooling channels 129

Prevents refrigerant with the flowing through the heat channels 133 heat transport substance, so that a division of the heat exchange element 153 is ensured by the dividing line 155. The condenser 1 17 of the separated by the dividing line 155 heat exchange element 153 is part of an active refrigeration cycle with a

Compressor, while the Wärmeleitbereich 107 of the separated by the dividing line 155 heat exchange element 153 part of a passive heat circulation system 105, such. a thermosyphon or a heating tube is.

However, the partition wall 135 and the central web 145 are designed such that they are thermally conductive, and thus a heat flow from the refrigerant in the cooling channels 129 to the heat transport substance in the heat channels 133 is made possible. Thus, the heat exchange element 153 functions as a heat exchanger to remove heat from the

Transfer refrigerant circuit to the heat circulation system 105.

The heat circulation system 105, the by the condenser 1 17 of the

Refrigeration discharged heat to an element of the refrigerator 100 delivered.

For example, the dissipated heat may be delivered to a surface area of the frame 103 of the refrigerator 100 to heat the surface area of the frame 103 and prevent condensation of water on a cold surface of the frame 103.

Fig. 7 shows a schematic representation of a refrigeration device 100 with a

Evaporating tray 163. The refrigerating apparatus 100 includes a heat circulating system 105 having a heat conducting portion 107 for absorbing heat and a heat releasing portion 109 for delivering heat to a thermally conductive member 161 such as a high surface area element configured to dissipate the heat to the Evaporate 163. As a result, an effective heat transfer from the heat-conducting region 107 to the evaporation tray 163 of the refrigeration device 100 can be ensured.

The heat circulation system 105 may include a heating tube in addition to a thermosiphon to deliver heat to the evaporation tray 163. A heating tube is a closed tube which is filled with a heat transport substance and which has a wick on the outer wall of the heating tube. In the wick, the heat transport substance is in a liquid state of aggregation. If the

Wärmeleitbereich 107 of the heating tube is heated, the evaporated

Heat transport substance under heat absorption, and by the resulting pressure increase in the heating tube condenses simultaneously gaseous

Heat transport substance in the heat-emitting portion 109 of the heating tube below

Heat dissipation. Thus, the heat pipe achieves efficient heat transfer from a warm to a cold environment, which is much more efficient than traditional copper thermal conduction.

Since the heat circulation system 105, such as e.g. the heat pipe, heat dissipates from the condenser 1 17 and thus is colder than the environment, the condenser 1 17 is better cooled than by air cooling. The lower the condensing temperature of the

Refrigerant is in the refrigeration cycle, the greater the efficiency of the compressor in the refrigeration cycle and the lower the energy consumption of the entire

Refrigeration unit 100. Due to the better cooling of the condenser 1 17 through the

Heat cycle system 105 may under certain circumstances a fan in the refrigerator 100 run slower, whereby the volume during operation of the refrigerator 100 can be reduced.

All features explained and shown in connection with individual embodiments of the invention may be provided in different combinations in the article according to the invention, in order to simultaneously realize their advantageous effects.

The scope of the present invention is given by the claims and is not limited by the features illustrated in the description or shown in the figures. LIST OF REFERENCE NUMBERS

The refrigerator

Refrigerator door

frame

Heat circulation system

heat-conducting

Heat-dissipating area

substance line

flow direction

isolation

condenser

mouthpipe

outlet pipe

MPE tube

slats

essay

cold channels

web

heat ducts

partition wall

First opening

Coolant area

Second opening

substance space

center web

slot

Refrigerant slot

substance slot

Heat exchange element

parting line

Another entrance pipe

Another exit pipe Thermally conductive element evaporation tray

Claims

Refrigeration appliance (100) with a refrigeration circuit with a condenser (1 17), with a heat circulation system (105) for heating an element of the refrigeration device (100), wherein the heat circulation system (105) comprises a heat-conducting region (107), and with a heat exchange element (153 ), which comprises the condenser (1 17) and the Wärmeleitbereich (107), characterized in that

the condenser (17) and the heat conduction region (107) in the heat exchange element (153) are thermally coupled to transfer heat from the refrigeration cycle to the

Heat conduction region (107) of the heat circulation system (105) deliver.

Refrigerating appliance (100) according to claim 1, characterized in that the

Heat exchange element (153) comprises a condenser (1 17) of multi-port extruded tube (123).

Refrigerating appliance (100) according to claim 1 or 2, characterized in that the

Condenser (1 17) comprises a cooling channel (129) and the Wärmeleitbereich (107) comprises a heat channel (133) that

the refrigerant passage (129) is formed, a refrigerant of the refrigeration cycle in the

Heat exchange element (153) to convey, and that

the heat channel (133) is formed, a heat transport substance of the

Heat cycle system (105) in the heat exchange element (153) to convey.

Refrigeration appliance (100) according to claim 3, characterized in that the cooling channel (129) and the heat channel (133) are arranged parallel to each other, and that in the cooling channel (129) recoverable refrigerant and in the heat channel (133) recoverable heat transport substance in opposite each other

Flow directions through the cooling channel (129) and through the heat channel (133) are conveyed. Refrigerating appliance (100) according to claim 3 or 4, characterized in that the

Refrigeration channel (129) from the heat channel (133) by a thermally conductive

Partition (135) is separated.

Refrigerating appliance (100) according to one of the preceding claims, characterized

characterized in that the heat exchange element (153) comprises an attachment (127) and that the attachment (127) is designed to connect the heat exchange element (153) to the refrigeration cycle and to the heat circulation system (105), the refrigeration cycle comprising a refrigerant and wherein the heat circulation system (105) comprises a heat transport substance.

Refrigeration appliance (100) according to claim 6, characterized in that the attachment (127) has a refrigerant space (139) for receiving a refrigerant through a first opening (137) and a substance space (143) for receiving the

Heat transport substance through a second opening (141), wherein the refrigerant space (139) and the substance space (143) by a thermally conductive center web (145) are separated from each other.

in that the heat transport substance is an alkane, a

Hydrofluorocarbon or water, preferably isobutane, tetrafluoroethane or water, and more preferably water.

characterized in that the heat circulation system (105) a

Heat transport substance includes and a heat release region (109) comprises

the heat conduction region (107) is formed, the amount of heat absorbed by the condenser (1 17) of the heat exchange element (153) to the

Heat transport substance in the heat circulation system (105) to give rise to heat the heat transport substance, that

the heat circulation system (105) is formed, the heated

Heat transport substance from the Wärmeleitbereich (107) to the

Heat discharge area (109) to conduct, and that the heat release region (109) is designed to deliver the amount of heat absorbed by the heat transport substance to the element of the refrigeration device (100).

10. Refrigerating appliance (100) according to one of the preceding claims, characterized

characterized in that the refrigeration cycle comprises an active system with an evaporator, a compressor or a throttle body.

1 1. Refrigerating appliance (100) according to one of the preceding claims, characterized

characterized in that the heat circulation system (105) comprises a passive system with a thermosyphon or a heating tube.

12. Refrigerating appliance (100) according to one of the preceding claims, characterized

characterized in that the refrigeration device (100) comprises an evaporation tray (163), and that the heat circulation system (105) is adapted to deliver the amount of heat absorbed to the evaporation tray (163) of the refrigeration appliance (100).

13. Refrigerating appliance (100) according to claim 12, characterized in that the

Heat circulation system (105) comprises a heat release region (109), and that the heat release region (109) comprises a thermally conductive element (161) which is in thermal contact with the evaporation tray (163) to ensure effective heating of the evaporation tray (163).

14. Refrigerating appliance (100) according to one of the preceding claims, characterized

characterized in that the heat circulation system (105) is adapted to deliver the amount of heat absorbed to the frame (103) of the refrigeration device (100).

15. Refrigerating appliance (100) according to claim 14, characterized in that the

Heat circuit system (105) is adapted to deliver the absorbed amount of heat to a surface region of the frame (103) of the refrigeration device (100).