WO2015018646A1

WO2015018646A1 - Refrigerating device with an evaporator

Info

Publication number: WO2015018646A1
Application number: PCT/EP2014/065880
Authority: WO
Inventors: Sebastian BRUNS; Tobias HELFERICH; Hans Ihle; Berthold Pflomm
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2013-08-09
Filing date: 2014-07-24
Publication date: 2015-02-12
Also published as: EP3030848A1; CN105705886B; CN105705886A; DE102013215825A1; RU2645859C2; RU2016104493A

Abstract

The invention relates to a refrigerating device with an evaporator (200). The evaporator (200) has a support (202) and a pipe (204) arranged on the support (202) for conducting a coolant. The pipe (204) on the support (202) has a first pipe region (I), through which the coolant can flow substantially in a first transport direction, in particular from top to bottom, in the operating position of the refrigerating device (100), and a second pipe region (II), through which the coolant can flow substantially in a second transport direction, in particular from bottom to top. According to the invention, the first pipe region (I) and the second pipe region (II) each has a section (210a, 212a, 210b, 212b) and (214a, 214b), respectively, which are nested on the support (202).

Description

Refrigeration device with an evaporator

The invention relates to a refrigeration device having an evaporator, the evaporator having a carrier and a tube arranged on the carrier for guiding refrigerant, wherein the tube on the carrier has a first tube region, which in the operating position of the refrigerating device essentially in a first transport direction, in particular from top to bottom, can be flowed through, and a second tube portion, which in a second transport direction, in particular from bottom to top, can be flowed through substantially.

Refrigeration appliances, in particular designed as household appliances refrigerators are known and are used to housekeeping in households or in the catering sector to store perishable food and / or drinks at certain temperatures.

Such refrigerators have a so-called tube plate evaporator, which has a carrier, on which a pipe through which refrigerant flows is arranged. The tube has a meandering course on the carrier. In this case, the course of the tube is guided so that the tube of the evaporator has juxtaposed meander-shaped sections from the top to the middle of the carrier, wherein the tube is continued from the middle of the carrier directly without meander to the lower edge of the carrier. From there, the pipe meanders from bottom to top, i. to the middle, continued. This pipe run leads to a larger used evaporator surface, which is available at the beginning of the cooling. After the upper half of the tube is flowed through by coolant, it is thus jumped directly to the still very warm bottom edge of the evaporator. This at the beginning of the cooling phase improved land use of the evaporator leads to a higher in the initial phase evaporation temperature and thus to a higher efficiency of the refrigerator. However, this arrangement of the tube on the carrier results in uneven cooling of the carrier.

It is therefore the object underlying the invention to provide a refrigerator with an evaporator, which can be cooled more uniformly.

This object is achieved by the subject with the features according to the independent Claim solved. Advantageous developments are subject of the dependent claims, the description and the drawings.

The present invention is based on the finding that the cooling of the carrier can be further uniformed by a nested guide of the tube. This can be realized, for example, by a refrigeration device with an evaporator, in which the first tube region has a section and the second tube region has a section which is nested on the carrier. An interleaving of the sections of the tube region is understood to mean that the sections of the first tube region and of the second tube region together form a nested section with at least two tube regions with a transport direction of refrigerant in the tube which is different from the guidance of the tube regions. As a result, the technical advantage is achieved that a uniform cooling of the carrier is effected by the nesting. Thus, the energy efficiency of the refrigerator can be further increased because the existing evaporator surface is used even better. Here, a tube is understood to mean a component that is designed as an elongate hollow body having a length which is greater than the diameter of the tube. Such a tube is made of an inflexible material, i. it does not deform during operation. Such a tube may be made of metal or plastic. In this case, such a tube can be seamless or a connecting seam, e.g. having a weld, be formed.

A refrigeration device is understood in particular to be a household appliance, that is to say a refrigeration device that is used for household purposes in households or in the gastronomy sector, and in particular serves to store food and / or drinks at specific temperatures, such as, for example, a refrigerator, a freezer, a refrigerator - / Freezer, a freezer or a wine fridge.

According to a first aspect, the invention relates to a refrigeration device with an evaporator, wherein the evaporator comprises a carrier and a tube arranged on the support for carrying refrigerant, wherein the tube on the support a first pipe portion which in the operating position of the refrigerator in a first Transport direction can be flowed through and a second tube portion, which in a second transport direction can flow through. The first tube portion has a portion and the second tube portion has a portion, the portions being nested on the carrier.

The first transport direction can in the operating position of the refrigerator from top to bottom, ie in the direction of gravity run. The second transport direction can, in the operating position of the refrigeration device, run from bottom to top, ie opposite to the direction of gravity. It is thereby achieved that the refrigerant from an injection point, is arranged in the first tube region, is guided downwards, and is guided by a refrigerant collecting point in the second tube region, that is below, upwards.

In an advantageous embodiment it is provided that the first tube region has two sections, the second tube region having a section which is arranged adjacent to the two sections of the first tube region. This achieves the technical advantage that the tube can be guided on the carrier in a particularly simple manner and without particularly long connecting sections between the first and second sections. So the tube length can be short and thus material can be saved.

In a further advantageous embodiment, it is provided that the portion of the second tube region, which is arranged adjacent to the two sections of the first tube region, can be flowed through in the first transport direction. Thereby, the technical advantage is achieved that first outer portions of the carrier and finally a central portion of the carrier, which is adjacent to the other two portions of the carrier is cooled from top to bottom. Thus, a particularly strong cooling can be achieved at the beginning in the first and second sections and then the central section from above.

In a further advantageous embodiment, it is provided that the portion of the second tube region, which is arranged adjacent to the two sections of the first tube region, in the second transport direction can be flowed through from top to bottom. Thereby, the technical advantage is achieved that first outer portions of the carrier and finally a central portion of the carrier adjacent to the other two Sections of the support is cooled from bottom to top. Thus, a particularly strong cooling can be achieved at the beginning in the first and second sections and then the middle section from below.

In a further advantageous embodiment, it is provided that the carrier is plate-shaped. As a result, the technical advantage is achieved that the carrier has a particularly large area on which the tube is arranged. So a particularly powerful evaporator can be provided.

In a further advantageous embodiment, it is provided that the first tube region can be flowed through substantially in the direction of gravity. Thereby, the technical advantage is achieved that in this pipe area no promotion of refrigerant by a conveyor, such as a pump is needed. This simplifies the structure.

In a further advantageous embodiment, provision is made for the tube to have a third tube region on the carrier which can be flowed through essentially in a transport direction which differs from the transport direction in the first tube region and the transport direction in the second tube region. As a result, the technical advantage is achieved that the cooling of the carrier is further uniform.

In a further advantageous embodiment, it is provided that the transport direction in the first tube region and / or the transport direction in the second tube region extend within manufacturing tolerances at a right angle to the transport direction in the third tube region. Manufacturing tolerances mean the usual tolerances occurring within a production, for example 3%, 5% or 10%. As a result, the technical advantage is achieved that the tube can be easily arranged on the carrier. This simplifies the production.

In a further advantageous embodiment, one of the sections 2 to 10, in particular 3 to 5 meanders on. This achieves the technical advantage that one of the sections can be assigned to one of a plurality of cooling compartments of the refrigeration device, so that, for example, a refrigeration compartment designed as a freezer compartment is assigned a first section with 2 to 5, eg 3, meanders, that during commissioning of the evaporator when first cools.

In one advantageous embodiment, within production tolerances of one of the sections, one half, in particular one third, in particular one quarter, in particular one eighth, of the carrier surface of the carrier covers. Manufacturing tolerances mean the usual tolerances occurring within a production, for example 3%, 5% or 10%. As a result, the technical advantage is achieved that on the one hand one of the sections can be assigned to one of several cold surfaces of the refrigeration device, but also several sections can be assigned to a single refrigeration compartment, so that a uniform cooling of several cold surfaces of the refrigerator is ensured.

In an advantageous embodiment, at least two meanders of one of the sections are arranged above a coolant level, which is formed by refrigerant accumulated in idle times of the evaporator. As a result, the technical advantage is achieved that start-up losses are reduced, since in idle times of the evaporator accumulated refrigerant first undergoes a heat exchange before it leaves the evaporator.

In a further advantageous embodiment, at least two meanders of a section are arranged in front of an outlet of the evaporator, which are arranged above a coolant level which is formed by refrigerant accumulated in down times of the evaporator. As a result, the technical advantage is achieved that at a compressor start of the refrigerator foaming and cracked in the direction of compressor refrigerant still undergoes some heat exchange in the evaporator before it enters a suction pipe and thus is no longer available for heat exchange. Thus, cold losses can be reduced.

In a further advantageous embodiment, a connecting section of the pipe connects portions of the first pipe region to carry refrigerant. As a result, the technical advantage is achieved that no additional components for the refrigerant-carrying compound of the sections are required. This simplifies the production.

In a further advantageous embodiment, a connecting portion of the Pipe sections of the second pipe section refrigerant. As a result, the technical advantage is achieved that no additional components for the refrigerant-carrying compound of the sections are required. This simplifies the production.

In a further advantageous embodiment, the carrier has a first extension direction and a second extension direction, wherein the length in the first extension direction is greater than the width of a second extension direction, and a meander has in one of the sections a straight tube section whose longitudinal direction is within Manufacturing tolerances in the direction of extension of the wearer is. Manufacturing tolerances mean the usual tolerances occurring within a production, for example 3%, 5% or 10%. This achieves the technical advantage that the tube can be arranged in a space-saving manner on a carrier, wherein the carrier is e.g. is formed rectangularly having a longitudinal and a transverse side, wherein extending the pipe section of the meander in the direction of the width of the carrier. As a result, the technical advantage is achieved that with a single tool carrier different evaporator heights of the evaporator can be realized, which reduces the investment costs for manufacturing.

In a further advantageous embodiment, the evaporator is designed as a ToS evaporator. As a result, the technical advantage is achieved that the evaporator has a particularly simple structure and therefore can be manufactured with little effort.

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

1 is a front view of a refrigerator,

2 is a schematic representation of an evaporator,

3 shows a further schematic representation of an evaporator,

4 shows a further schematic representation of an evaporator,

Fig. 5 is a further schematic representation of an evaporator, and

Fig. 6 is another schematic representation of an evaporator. 1 shows a refrigerator according to one embodiment for a refrigeration device 100 with an upper refrigerator door 102 and a lower refrigerator door 104 on its refrigerator front side. The refrigerator is used, for example, for cooling food and includes a refrigerant circuit with an evaporator (not shown in FIG. 1), a compressor (not shown), a condenser (not shown) and a throttle body (not shown).

The evaporator is designed as a heat exchanger, in which, after expansion, the liquid refrigerant is removed by absorbing heat from the medium to be cooled, i. Air is evaporated inside the refrigerator.

The compressor is a mechanically driven component that draws refrigerant vapor from the evaporator and expels it at higher pressure to the condenser.

The condenser is designed as a heat exchanger in which, after compression, the vaporized refrigerant is released by heat to an external cooling medium, i. the ambient air is liquefied.

The throttle body is a device for the continuous reduction of the pressure by reduction in cross section.

The refrigerant is a fluid that is used for heat transfer in the refrigeration system and that absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and pressure of the fluid, usually including changes in state of the fluid.

With the upper refrigerator door 102, an upper refrigeration compartment 106 can be opened, according to one embodiment is designed as a freezer compartment. With the lower refrigerator door 104, a lower cooling compartment 108 can be opened, which is designed according to an embodiment as a cooling compartment.

FIG. 2 shows an evaporator 200.

In one embodiment, the evaporator 200 is a tube plate evaporator educated. Tube plate evaporators are also referred to as ToS evaporators. The evaporator 200 has a plate-shaped carrier 202, which according to one embodiment has a first extension direction E1 and a second extension direction E2. According to one embodiment, the first extension direction E1 extends in refrigeration appliance high direction Z in installation position of the evaporator 200 in the refrigeration device 100, while the second extension direction E2 extends in refrigeration device width direction Y in installation position of the evaporator 200 in the refrigeration device 100.

According to one embodiment, the carrier 202 has a length in the direction of the first extension direction E1, which is greater than the width of the carrier 202 in the direction of the second extension direction E2. Thus, according to one embodiment, the carrier 202 is rectangular in shape.

On the carrier 202, a tube 204 is arranged with an inlet 202 and an outlet 208, which is traversed in the passage direction D of refrigerant. The tube 204 extends with a plurality of meanders 218 on the carrier 202.

A meander 218 includes straight pipe sections 222 connected to bow sections 240. According to one embodiment, the straight pipe sections 238 extend within manufacturing tolerances with their longitudinal direction L in the direction of the second extension direction E2. Thus, the straight pipe sections 238 extend in refrigerator width direction Y.

According to one embodiment, the tube 204 on the carrier 202 has a first tube region I, which is flowed through in the operating position of the refrigeration device 100 substantially from top to bottom. Furthermore, the tube 204 has on the carrier 202 a second tube region II, which is flowed through substantially from bottom to top. The first tube region I is flowed through in the direction of a first transport direction of refrigerant, and the second tube region II becomes in the direction of a second tube Transport direction of refrigerant flows through, wherein the first transport direction is opposite to that of the second transport direction.

The tube 204 is arranged on the carrier 202 meandering running so that it forms a plurality of sections 210a, 210b, 212a, 212b, 214a, 214b, which - as will be explained - meander in the first transport direction and in the second transport direction on the carrier 202 extend. In this case, according to an embodiment, the sections 210a, 210b, 212a, 212b extend in the first transport direction and the sections 214a, 214b in the second transport direction.

In this case, according to an embodiment, the adjacent sections 210a, 212a, 214a are interleaved with each other and form a first nested section 236. Further, the adjacent sections 210b, 212b, 214b are interleaved with each other to form a second nested section 238.

According to one embodiment, the tube 204 on the carrier 202 in the first portion 210a of the first tube region I is arranged meandering extending in the first transport direction. In this case, according to one embodiment, the first transport direction runs along an axis which extends in refrigeration device vertical direction Z, namely within production tolerances from top to bottom.

The section 210a is adjoined by a connecting section 224 of the tube 204, which according to one embodiment extends in the refrigeration appliance high-direction Z.

Connected to the connecting section 224 is the second section 212a of the first pipe section I, in which the pipe 204 is arranged running meander-shaped in the first transport direction.

The section 212a is adjoined by a further connecting section 226 of the tube 204, which according to one embodiment extends in the refrigeration appliance high-direction Z.

Connected to the connecting section 226 is the third section 210b of the first pipe section I, in which the pipe 204 is arranged running meander-shaped in the first transport direction.

The section 210b is adjoined by a further connecting section 228 of the tube 204, which according to one embodiment extends in the refrigeration appliance high-direction Z. Connected to the connecting section 228 is the fourth section 212b of the first pipe section I, in which the pipe 204 is arranged running meander-shaped in the first transport direction.

The section 212b is adjoined by a further connecting section 230 of the tube 204, which extends in refrigeration device vertical direction Z according to one embodiment.

Connected to the connecting section 230 is the first section 214a of the second pipe section II, in which the pipe 204 is arranged running meander-shaped in the second transport direction. In this case, according to one embodiment, the second transport direction extends in refrigeration appliance high-direction Z, and indeed within manufacturing tolerances from bottom to top.

The second section 214a is adjoined by a further connecting section 232 of the tube 204, which according to one embodiment extends in the refrigeration appliance high-direction Z.

Connected to the connecting section 232 is a further section 216 of the second pipe section II, in which the pipe 204 is arranged extending in a meandering manner in the second transport direction.

The further section 216 is adjoined by a further connecting section 234 of the tube 204, which according to one embodiment extends in refrigeration appliance high-direction Z.

Connected to the connecting section 234 is the second section 214b of the second pipe section II, in which the pipe 204 is arranged running meander-shaped in the second transport direction.

From the second section 214b, the tube 204 is then led to the outlet 208.

Furthermore, according to one embodiment, the connection sections 224-234 extend in refrigeration device high-direction Z. Thus, according to one embodiment, the first nested portion 236 includes the portion 210a, the portion 212a, and the portion 214a, with the portion 214a disposed in the flow direction D of refrigerant through the tube 204 between the portion 210a and the portion 212a. Thus, the portion 214a is disposed adjacent to the portion 210a and the portion 212a.

The second nested portion 238 according to one embodiment comprises the portion 210b, the portion 212b and the portion 214b and the further portion 216, wherein the portion 214b is arranged in the flow direction D of refrigerant through the pipe 204 between the portion 210b and the portion 212b. Thus, the portion 214b is located adjacent to the portion 210b and the portion 212b.

By the nested portions 236, 238 a comparative cooling of the carrier 202 is effected and thus increases the energy efficiency of the refrigeration device 100.

Sections 210a, 210b, 212a, 212b, 214a, 214b, in one embodiment, have one to ten, e.g. one to five meanders to effect uniform cooling in a portion of the carrier 202. According to one embodiment, the sections 210a, 210b, 212a, 212b, 214a, 214b cover differently sized surface portions of the carrier surface of the carrier 202. Thus, the second section 212b covers one quarter of the carrier surface of the carrier 202, the sections 210a, 212a and 214a one third, and the sections 210b, 214b and 216 one-eighth of the support surface of the carrier. Thus, the individual sections 210a, 210b, 212a, 212b, 214a, 214b can be adapted to the respective size of the assigned cold storage compartments 106, 108.

FIG. 2 further shows that two meanders 218 are disposed above a coolant level formed by refrigerant that accumulates in downtime of the evaporator 200. Refrigerant accumulated there must flow through sections 214b, 216, and 214a where it undergoes heat exchange before entering the outlet 208.

Furthermore, FIG. 2 shows that, according to one embodiment, two meanders 218 are arranged in front of the outlet 208. This ensures that when the compressor is started, the foaming refrigerant, which has been torn in the direction of the compressor, has another undergoes certain heat exchange in the evaporator 200 before it reaches the outlet 208.

3 shows the evaporator 200, in which the tube 204 between an inlet 206 and an outlet 208 in the section 210a of the first tube region I on the carrier 202 is arranged running meander-shaped in the first transport direction. In this case, according to one embodiment, the first transport direction extends along an axis which extends in refrigeration appliance high-direction Z, namely within top-down fault tolerances.

The first section 210a is adjoined by a connecting section 224 of the tube 204, which forms a refrigerant-carrying connection to the section 214a of the second tube section II, in which the tube 204 is arranged meandering in the second transport direction. The connecting portion 224 extends according to an embodiment in refrigeration device high direction Z, namely within manufacturing tolerances from top to bottom.

According to one embodiment, another section 300 of a third tube region III immediately adjoins the second section 214a, in which the tube 204 on the carrier 202 running in a meandering manner is arranged in a third transport direction. In this case, according to one embodiment, the third transport direction extends along an axis which extends in refrigeration device width direction Y, within right-to-left production tolerances.

While the first transport direction and the second transport direction extend along an axis which extends in refrigeration device Z direction, wherein the first transport direction and the second transport direction are oppositely aligned, the third transport direction extends in refrigerator width direction Y. Thus, the first transport direction and the second transport direction and the third transport direction in different directions. 3 shows that the third transport direction extends at a right angle to the first extension direction E1 and the second extension direction E2.

The nested portion 236 comprises the portion according to one embodiment 210a, the portion 214a and the portion 300, wherein the portion 300 is arranged in the flow direction D of refrigerant through the pipe 204 between the portion 210a and the portion 214a. Thus, the portion 300 is disposed adjacent to the portion 210a and the portion 214a.

The nested portion 236 may be used to cool both an upper refrigeration compartment 106 and to cool a lower refrigeration compartment 108, e.g. one of the sections 210a or 212a is associated with a freezer and the other sections 212a and 300 or 210a and 300 are associated with a refrigerated compartment.

FIG. 4 shows the evaporator 200 having the first nested portion 236 and the second nested portion 238.

In the first section 210 a of the first tube region I, the tube 204 arranged on the carrier 202 meanders in the first transport direction, the connecting section 224 of the tube 204 establishing a refrigerant-carrying connection to the section 212 a of the first tube region I, in which the tube 204 rests the carrier 202 is arranged meandering continuing in the first transport direction.

A connecting portion 228 of the tube 204 establishes a refrigerant-carrying connection to the portion 212b, wherein the connecting portion 228 extends in refrigeration device Z direction, according to one embodiment.

In the section 212b of the first tube region I, the tube 204 arranged on the carrier 202 runs meander-shaped in the first transport direction.

The connecting portion 230 of the tube 204 adjoins the portion 212b, wherein the connecting portion 230 extends in refrigeration unit Z direction according to one embodiment.

The section 214a of the second tube region II adjoins the connection section 230, in which the tube 204 is arranged in a meandering manner on the carrier 202 in the second transport direction. The connecting portion 232 of the tube 204 adjoins the portion 214a, wherein the connecting portion 232 extends in refrigeration unit Z direction according to one embodiment. Furthermore, two meanders 218 form the second section 214b of the second pipe section II.

Connected to the connecting section 232 is the third section 300 of the third pipe section III, in which the pipe 204 runs meander-shaped in the third transport direction.

The third section 300 is connected to the outlet 208 in a refrigerant-carrying manner.

The nested portion 236 comprises, according to one embodiment, the portion 210a, the portion 212a and the portion 300, the portion 300 being arranged in the flow direction D of refrigerant through the tube 204 between the portion 210a and the portion 212a. Thus, the portion 300 is disposed adjacent to the portion 210a and the portion 212a.

The second nested portion 238 includes the portion 210b, the portion 212b, and the portion 214b, wherein the portion 214b is disposed in the flow direction D of refrigerant through the pipe 204 between the portion 210b and the portion 212b. Thus, the portion 214b is located adjacent to the portion 210b and the portion 212b.

FIG. 4 shows that in the first nested section 236 all three transport directions are different. According to one embodiment, the three transport directions are arranged at right angles to each other within manufacturing tolerances.

The first nested portion 236 may be associated with the upper refrigeration compartment 106, while the second nested portion 238 may be associated with the lower refrigeration compartment 108.

FIG. 5 shows the evaporator 200 in which the tube 204 between the inlet 206 and the outlet 208 in the portion 210a of the first tube portion I on the carrier 202 meandering in the first transport direction.

The first section 210a is adjoined by the connecting section 224 of the tube 204, which forms a refrigerant-carrying connection to a first section 300 of the second tube section II, in which the tube 210a is arranged in a meandering manner in the second transport direction. The connecting portion 224 extends in accordance with an embodiment in refrigeration device high Z.

The connection section 230 adjoins the section 300, wherein the connection section 230 extends in a first section in the flow direction D in the refrigeration appliance high-direction Z according to one embodiment and extends in the refrigerator unit width direction Y in a second section in the flow direction D.

Connected to the connecting section 230 is the second section 500 of the second pipe section II, in which the pipe 204 is arranged in a meandering manner on the carrier 202 in the second transport direction.

According to one embodiment, the second transport direction extends in refrigeration device width direction Y, namely within production tolerances from right to left. On the other hand, according to one embodiment, the first transport direction I extends in refrigeration appliance high-direction Z, namely within production tolerances from top to bottom. Thus, the first transport direction is different from the second transport direction. According to one embodiment, the first transport direction and the second transport direction are arranged at right angles to each other within manufacturing tolerances.

The portions 210 a, 300 and 500 form the nested portion 236, the portion 500 being disposed in the flow direction D of refrigerant through the pipe 204 between the portion 210 a and the portion 300. Thus, the portion 500 is disposed adjacent to the portion 210 a and the portion 300.

The nested portion 236 may be used to cool both a refrigerated compartment and a freezer compartment, with one of the sections 210a or 300 being associated with the freezer compartment and the other sections 300 and 500 or 210a and 500, for example associated with the refrigerated compartment.

6 shows the evaporator 200, in which the tube 204 between the inlet 206 and the outlet 208 in the first section 210a of the first tube region I on the carrier 202 is arranged running meander-shaped in the first transport direction.

Connected to the portion 210a, the connecting portion 224 of the tube 204, which forms a refrigerant-carrying connection to the portion 214a of the second tube portion II, in which the tube 204 is arranged meandering in the second transport direction. The connecting portion 224 extends in accordance with an embodiment in refrigeration device high Z.

The connecting portion 230 of the tube 204 adjoins the portion 214a, wherein the connecting portion 230 extends in the direction of flow direction D in the refrigeration unit Z in one embodiment. According to one embodiment, the connecting portion 224 and the connecting portion 230 are partially parallel to each other.

Connected to the connecting section 224 is the second section 212a of the first tube section I, in which the tube is arranged in a meandering manner on the carrier 202 in the first transport direction.

The portions 210a, 212a, and 214a form the nested portion 236 with the portion 212a disposed in the flow direction D of refrigerant through the pipe 204 between the portion 210a and the portion 214a. Thus, the portion 212a is disposed adjacent to the portion 210a and the portion 214a.

The nested portion 236 can be used to cool both a refrigerated compartment and a freezer compartment, for example, with one of the sections 210a or 212a associated with the freezer compartment and the other sections 212a and 214a or 210a and 214a associated with the refrigerated compartment. Refrigeration appliance

upper refrigeration door

lower refrigerator door

Upper cold compartment

lower refrigeration compartment evaporator

carrier

pipe

inlet

outlet

a section

b section

a section

b section

a section

b section

section

meander

straight pipe section

arc section

connecting portion

first nested section

second nested section section Second tube region second tube region second tube region second tube region third tube region third tube region third tube region

D flow direction

E1 first extension direction

E2 second extension direction

L longitudinal direction

X Refrigeration device depth direction

Y refrigeration equipment width direction

Z Refrigeration appliance high

Claims

Patent claims

1. Refrigeration device (100) with an evaporator (200), the evaporator (200) having a carrier (202) and a tube (204) arranged on the carrier (202) for guiding refrigerant, the tube (204) being on the carrier (202) has a first pipe region (I), which can be flowed through in the operating position of the refrigeration device (100) in a first transport direction, in particular from top to bottom, and a second pipe region (II), which can flow in a second transport direction, in particular from bottom upward, can be flowed through, characterized in that the first pipe region (I) has a section (210a, 212a, 210b, 212b) and the second pipe region (II) has a section (214a, 214b, 300, 500). , which are nested on the carrier (202).

2. Refrigeration appliance (100) according to claim 1, characterized in that the first pipe region (I) has two sections (210a, 210b, 212a, 212b), wherein the second pipe region (II) has a section (214a, 214b), which is arranged adjacent to the two sections (210a, 210b, 212a, 212b) of the first tube region (I).

3. Refrigeration appliance (100) according to claim 2, characterized in that the section (214a, 214b) of the second pipe region (II) which is adjacent to the two sections (210a, 212a, 210b, 212b) of the first pipe region (I). is arranged, can flow through in the second transport direction.

4. Refrigeration device (100) according to claim 2, characterized in that the section (214a, 214b) of the second pipe region (II) which is arranged adjacent to the two sections (210a, 212a, 210b, 212b) of the first pipe region (I). is, can be flowed through in the second transport direction.

Refrigeration appliance (100) according to one of the preceding claims, characterized in that the carrier (202) is plate-shaped.

Refrigeration appliance (100) according to one of the preceding claims, characterized in that the first tube region (I) is essentially in Gravity direction can be flowed through.

7. Refrigeration device (100) according to one of the preceding claims, characterized in that the tube (204) on the carrier (202) has a third tube region (III), through which flow can essentially be carried out in a transport direction which is from the transport direction the first pipe area (I) and the transport direction in the second pipe area (II).

8. Refrigeration device (100) according to claim 7, characterized in that the

Transport direction in the first pipe area (I) and / or the transport direction in the second pipe area (II) run at a right angle to the transport direction in the third pipe area (III) within manufacturing tolerances.

9. Refrigeration device (100) according to one of the preceding claims, characterized in that one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) has 2 to 10 meanders (218), in particular 3 to 5 meanders ( 218).

10. Refrigeration device (100) according to one of the preceding claims, characterized in that within manufacturing tolerances one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) is a half, in particular a third, in particular a quarter, in particular an eighth of the support surface of the carrier (202) is covered.

1 1. Refrigeration device (100) according to one of the preceding claims, characterized in that at least two meanders (236) of one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) are arranged above a coolant level, which is formed by refrigerant that has accumulated during downtimes of the evaporator (200).

12. Refrigeration device (100) according to one of the preceding claims, characterized in that at least two meanders (236) of one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) in front of an outlet (206) of the Evaporator (200) are arranged, which are arranged above a coolant level which is formed by refrigerant accumulated during downtimes of the evaporator (200).

13. Refrigeration device (100) according to one of the preceding claims, characterized in that a connecting section (224, 228) connects sections (210a, 210b) of the first pipe region (I) in a manner carrying refrigerant.

14. Refrigeration device (100) according to one of the preceding claims, characterized in that a connecting section (230, 234) connects sections (212a, 212b) of the second pipe region (II) in a manner carrying refrigerant.

15. Refrigeration device (100) according to one of the preceding claims, characterized in that the evaporator (200) is designed as a ToS evaporator.