RU2645859C2 - Refrigerating device with evaporator - Google Patents

Abstract

FIELD: refrigerating equipment.

SUBSTANCE: invention relates to a refrigerating device with an evaporator. Evaporator (200) of the refrigerating device has support (202) and pipe (204) arranged on support (202) for conducting a coolant. Pipe (204) on support (202) has first pipe region (I), through which coolant in operating position of refrigerating device (100) can flow in a first transport direction, from top to bottom, and second pipe region (II), through which coolant can flow in a second transport direction, in particular from bottom to top. First pipe region (I) has section (210a, 212a, 210b, 212b) and second pipe region (II) has section (214a, 214b). Said sections are nested on support (202). Support (202) is made in form of a plate.

EFFECT: invention is aimed at providing a refrigerating device with an evaporator with the possibility of more uniform cooling.

13 cl, 6 dwg

Description

Technical field

The invention relates to a refrigeration apparatus with an evaporator, wherein the evaporator has a carrier and a pipe for passing refrigerant located on the carrier, the pipe located on the carrier has a first pipe region through which, in the operating position of the refrigeration apparatus, the refrigerant passes essentially in the first transport direction, in particular, from top to bottom, and a second region of the pipe through which the refrigerant flows substantially in a second conveying direction, in particular from bottom to top.

State of the art

US Pat. No. 2,386,889 shows an evaporator.

Laid-open (non-accepted) application WO 2012/136569 A1 shows a domestic refrigeration apparatus with evaporator plates connected by jumpers.

US Pat. No. 2,509,779 discloses a refrigeration element for a refrigeration apparatus.

Refrigerators, in particular refrigerators made in the form of household appliances, are known and used for housekeeping in households or in the gastronomic field for storing perishable foodstuffs and / or drinks in them at certain temperatures.

Such refrigerators have a so-called plate-and-tube evaporator, which includes a carrier on which a pipe is located, washed from the inside with refrigerant. The pipe passes through a medium in the form of a meander. In this case, the shape of the pipe passage looks so that from the top to the middle of the carrier, the evaporator pipe has sections in the form of a meander, arranged in a row one after another, and starting from the middle of the carrier, the shape of the pipe continues without a meander, directly - directly, up to the lower edge carrier. From there, the pipe continues from bottom to top, i.e. right up to the middle, in the shape of meander bends. This shape of the pipe increases the usable area of the evaporator, which is available at the start of cooling. After the coolant flows through the upper half of the pipe, it is transferred directly to the still very warm lower edge of the evaporator. Such improved utilization of the area of the evaporator at the beginning of the cooling phase leads in the initial stage to a higher evaporation temperature and thus to a higher efficiency of the refrigeration apparatus. However, this arrangement of the pipe on the carrier leads to an uneven decrease in the temperature of the carrier.

Disclosure of invention

Therefore, the basis of the invention is the task of providing a refrigeration apparatus with an evaporator, for which it is possible to cool more evenly.

This problem is solved by an object with features corresponding to an independent claim. Preferred embodiments of the invention are the subject of the dependent claims, descriptions and drawings.

This invention is based on the knowledge of the fact that when conducting pipes in the form of sections nested within each other, it is possible to further increase the uniformity of cooling of the carrier. The implementation of this is possible, for example, in a refrigeration apparatus with an evaporator, in which the first region of the pipe has a certain section and the second region of the pipe has a certain section, which sections are embedded in each other on the carrier. At the same time, by nesting sections of the pipe regions, it is understood that the sections of the first pipe region and the second pipe region together form a section with the pipe insertion belonging to at least two regions in which the shape of the passage of the pipe determines a different direction of refrigerant transport in the pipe. Due to this, a technical advantage is achieved, consisting in the fact that due to the insertion, a decrease in the temperature of the carrier is achieved. This creates the opportunity to further increase the energy efficiency of the refrigeration apparatus, since the available area of the evaporator is even better used. In this case, a pipe is understood to mean a part made in the form of an elongated hollow product with a length that is greater than its diameter. Such a pipe is made of inflexible material, i.e. it does not deform during operation. It is possible to make such a pipe from metal or plastic. In this case, it is possible to make such a pipe in the form of a seamless element or an element with a connecting seam, for example, having a weld.

A refrigerating appliance is understood, in particular, as a household appliance, that is, a refrigerating appliance that is used for housekeeping in households or in the gastronomic field and serves, in particular, to store food and / or drinks in it for certain temperatures, such as a refrigerator, freezer, combination refrigerator with a freezer, freezer or wine cabinet.

According to a first aspect, the invention relates to a refrigeration apparatus with an evaporator, wherein the evaporator comprises a carrier and a pipe for passing refrigerant located on the carrier, the pipe on the carrier having a first pipe region through which refrigerant flows in a first conveying direction and a second region the pipe through which it flows in the second direction of transportation. The first region of the pipe has a section and the second region of the pipe has a section, and these sections on the carrier are embedded in each other.

The first conveying direction can be in the operating position of the refrigerator from top to bottom, that is, in the direction of gravity. The second direction of transportation can take place in the operating position of the refrigeration apparatus from the bottom up, that is, opposite to the direction of gravity. As a result of this, it is achieved that the refrigerant from the injection point located in the first region of the pipe is directed downward, and from the collection point of the refrigerant located in the second region of the pipe, that is, further downward, it is conducted upward.

In a preferred embodiment, it is provided that the first region of the pipe has two sections, the second region of the pipe having a section that is adjacent to two sections of the first region of the pipe. Due to this, a technical advantage is achieved consisting in the fact that it is possible to conduct a pipe on a carrier between the first and second sections especially easily and without too long connecting sections. Thus, a short pipe length is possible and thus material savings.

In a further preferred embodiment, it is contemplated that a portion of a second pipe region that is adjacent to two portions of a first pipe region is configured to allow refrigerant to pass through it in a first conveying direction. Due to this, a technical advantage is achieved, consisting in the fact that first the outer sections of the carrier are cooled, and lastly, the middle section of the carrier, which is located next to both other sections of the carrier, is cooled downward. Thus, it is possible to achieve a particularly strong decrease in temperature at the beginning in the first and second section, and then in the middle section, starting from the top.

In a further preferred embodiment, it is contemplated that a portion of a second pipe region that is adjacent to two portions of a first pipe region is configured to allow refrigerant to pass through it in a second downward conveying direction. Due to this, a technical advantage is achieved, consisting in the fact that first the outer sections of the carrier are cooled, and lastly, the middle section of the carrier, which is adjacent to both other sections of the carrier, is cooled from bottom to top. Thus, it is possible to achieve a particularly strong decrease in temperature at the beginning in the first and second section, and then in the middle section, starting from the bottom.

In a further preferred embodiment, the carrier is provided in the form of a plate. This achieves the technical advantage that the carrier has a particularly large area on which the pipe is located. This allows you to provide a particularly high-performance evaporator.

In a further preferred embodiment, it is contemplated that the first region of the pipe is configured to allow refrigerant to flow therethrough substantially in the direction of gravity. This achieves the technical advantage that no transport device for transporting refrigerant, such as a pump, is required in this region of the pipe. This simplifies the design.

In a further preferred embodiment, it is provided that the pipe on the carrier has a third pipe region, the passage of which the refrigerant is possible essentially in a transport direction that differs from the transport direction in the first pipe region and from the transport direction in the second pipe region. Due to this, a technical advantage is achieved consisting in a further increase in the uniformity of cooling of the carrier.

In a further preferred embodiment, it is provided that the transportation direction in the first pipe region and / or the transportation direction in the second pipe region extends, within technological tolerances, at right angles to the transportation direction in the third pipe region. In this case, technological tolerances are understood as ordinary permissible deviations that appear during the production process, for example 3%, 5% or 10%. Due to this, a technical advantage is achieved, consisting in the fact that it is possible to easily place the pipe on the carrier. This simplifies production.

In a further preferred embodiment, in one of the sections there are from two to ten, in particular from three to five, meander bends. Due to this, a technical advantage is achieved, consisting in the fact that it is possible to supply one of the sections in accordance with one particular chamber from several refrigerating chambers of the refrigeration apparatus, so that, for example, a first section with the number of bends is connected to the cooling chamber, made in the form of a freezer a meander from 2 to 5, for example 3, which is first cooled during operation of the evaporator.

In a preferred embodiment, one of the sections covers, taking into account technological tolerances, half, in particular one third, in particular one quarter, in particular one eighth, the area of the carrier. In this case, technological tolerances are understood as permissible deviations that usually appear during the manufacturing process, for example 3%, 5% or 10%. Due to this, a technical advantage is achieved, consisting in the fact that, on the one hand, it is possible to attach one of the sections to one of several cooled surfaces of the refrigeration unit, but also to connect several sections to one separate cooling chamber, so that uniform cooling of several cooled surfaces of the refrigerator.

In a preferred embodiment, at least two bends of the meander of one of the sections are located above the level of coolant that forms the refrigerant that accumulates during periods of inactivity of the evaporator. Due to this, a technical advantage is achieved, namely, that losses in the initial period at start-up are reduced, since the refrigerant accumulated during the idle period of the evaporator first participates in heat transfer before it leaves the evaporator.

In a further preferred embodiment, at least two meander bends of one section, which are located above the level of coolant formed by accumulated refrigerant during the shutdown of the evaporator, are located before leaving the evaporator. This achieves the technical advantage that, when starting the compressor of the refrigeration unit, the cooling medium which foams and rushes towards the compressor is still involved in a certain heat exchange in the evaporator before it enters the suction pipe and is thus no longer available for heat exchange. This reduces the loss of cold.

In a further preferred embodiment, the portions of the first region of the pipe are connected to each other so that refrigerant can pass through the connecting section of the pipe. Thanks to this, a technical advantage is achieved in that additional components are not required to connect the sections with the possibility of refrigerant passage. This simplifies production.

In a further preferred embodiment, the portions of the second pipe region are connected to each other so that refrigerant can pass through the pipe connecting section. Thanks to this, a technical advantage is achieved in that additional components are not required to connect the sections with the possibility of refrigerant passage. This simplifies production.

In a further preferred embodiment, the carrier has a first propagation direction and a second propagation direction, the length in the first propagation direction being greater than the width in the second propagation direction, and the meander in one of the sections has a straight pipe section, the longitudinal direction of which passes, taking into account technological tolerances , in the direction of media distribution. In this case, technological tolerances are understood as permissible deviations that usually appear during the manufacturing process, for example 3%, 5% or 10%. This achieves the technical advantage that a compact arrangement of the pipe on the carrier is possible, the carrier being made, for example, in the form of a rectangle having a longitudinal and transverse side, and the pipe section in the shape of a meander extends in the direction of the width of the carrier. Due to this, a technical advantage is achieved, consisting in the fact that it is possible, with just one tool support, to realize different evaporator heights, which reduces investment costs for production.

In a further preferred embodiment, the evaporator is in the form of a plate-tube evaporator. Due to this, a technical advantage is achieved, consisting in the fact that the evaporator has a particularly simple design and can therefore be done at low cost.

Brief Description of the Drawings

Further embodiments are explained with reference to the accompanying drawings. Showing:

FIG. 1 is a front view of a refrigerator.

FIG. 2 is a schematic illustration of an evaporator.

FIG. 3 is another schematic representation of an evaporator.

FIG. 4 is the following schematic illustration of an evaporator.

FIG. 5 is a further schematic illustration of an evaporator.

FIG. 6 is another schematic representation of an evaporator.

The implementation of the invention

In FIG. 1 shows a refrigerator according to an embodiment for a refrigerator 100 with an upper refrigerator door 102 and a lower refrigerator door 104 on the front side of the refrigerator. The refrigerator serves, for example, for cooling food products 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 evaporates, absorbing heat from the medium being cooled, i.e. air inside the refrigerator.

A compressor is a mechanically driven component that draws in refrigerant vapor from an evaporator and pushes them under higher pressure to a condenser.

The condenser is designed as a heat exchanger in which the evaporated refrigerant after compression turns into a liquid, transferring heat to an external cooling medium, i.e. into the air of the surrounding space.

The throttle body is a device for continuously reducing pressure by reducing the cross section.

A refrigerant is a fluid that is used to transfer heat in a cooling system and which absorbs heat at low temperatures and low pressure of the fluid and gives off heat at a higher temperature and higher pressure of the fluid, and these processes, as a rule, include changes in the state of aggregation of the fluid.

The upper door 102 of the refrigeration apparatus opens the upper cooling chamber 106, which according to an embodiment is designed as a freezer. The lower door 104 of the refrigeration apparatus opens the lower cooling chamber 108, which according to an embodiment is designed as a refrigerating chamber.

In FIG. 2 shows an evaporator 200.

According to this embodiment, the evaporator 200 is configured as a tube-plate evaporator. Tubular plate evaporators are also called ToS type evaporators. The evaporator 200 has a plate carrier 202, which according to an embodiment has a first diffusion direction E1 and a second diffusion direction E2. According to an embodiment, the first propagation direction E1 at the mounting position of the evaporator 200 in the refrigeration apparatus 100 extends in the height direction Z of the refrigeration apparatus, while the second propagation direction E2 at the mounting position of the evaporator 200 in the refrigeration apparatus 100 extends in the width direction Y of the refrigeration apparatus.

According to an embodiment, the carrier 202 has a length directed in the first propagation direction E1 that is larger than the width of the carrier 202 directed in the second propagation direction E2. Thus, according to an embodiment, the carrier 202 is in the shape of a rectangle.

On the carrier 202, a pipe 204 is located with an inlet 202 and an outlet 208, through which refrigerant flows in the flow direction D. The pipe 204 passes through the carrier 202 with a large number of bends 218 meander.

The meander bend 218 includes straight pipe sections 222 that are connected to arcuate sections 240. According to an embodiment, the straight pipe sections, zone 238 with a longitudinal direction L extend, taking into account technological tolerances, in a direction coinciding with the second propagation direction E2. Thus, the straight pipe sections, zone 238, extend in the width direction Y of the refrigeration apparatus.

According to an embodiment, the pipe 204 on the carrier 202 has a first pipe region I through which, in the operational position of the refrigeration apparatus 100, the medium flows essentially from top to bottom. In addition, the pipe 204 on the carrier 202 has a second pipe region II through which the medium flows substantially upward. It passes through the first region I of the pipe in the first direction of transportation of the refrigerant, and along the second region II of the pipe in the second direction of transportation of the refrigerant, and the first direction of transportation is opposite to the second direction of transportation.

The pipe 204 is located on the meander-shaped carrier 202, so that it forms a large number of portions 210a, 210b, 212a, 212b, 214a, 214b, which — as will be explained — pass through the meander-shaped carrier 202 in a first conveying direction and in the second direction of transportation. At the same time, sections 210a, 210b, 212a, 212b according to an embodiment pass in the first transportation direction, and sections 214a, 214b in the second transportation direction.

In this case, according to an embodiment, the neighboring sections 210a, 212a, 214a are as if embedded in each other and form the first zone 236 of the embedded sections. Further, the adjacent sections 210b, 212b, 214b are embedded in each other and form a second zone 238 of the embedded sections.

According to an embodiment, the pipe 204 on the carrier 202 is located on the first portion 210a of the first pipe region I and extends in the form of a meander in the first conveying direction. In this case, the first transportation direction according to the embodiment is, taking into account technological tolerances, along the axis going in the direction of the height Z of the refrigeration unit, from top to bottom.

Adjacent to portion 210a is a connecting portion 224 of pipe 204, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

Adjacent to the connecting portion 224 is a second portion 212a of the first pipe region I, on which the pipe 204, located in the form of a meander, extends in a first conveying direction.

A further connecting portion 226 of the pipe 204 is adjacent to section 212a, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

A connecting portion 226 is adjacent to a third portion 210b of the first pipe region I, on which the pipe, arranged in the form of a meander, extends in a first conveying direction.

A further connecting section 228 of the pipe 204 is adjacent to section 210b, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

A fourth portion 212b of a first pipe region I is adjacent to the connecting portion 228, on which the pipe, arranged in the form of a meander, extends in a first conveying direction.

A further connecting portion 230 of the pipe 204 is adjacent to section 212b, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

Adjacent to the connecting portion 230 is a first portion 214a of the second pipe region II, on which the pipe, arranged in the form of a meander, extends in a second conveying direction. In this case, the second transportation direction according to the embodiment is, taking into account technological tolerances, in the direction of the height Z of the refrigeration unit, from the bottom up.

A further connecting portion 232 of the pipe 204 is adjacent to the second portion 214a, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

The connecting section 232 adjoins a further section 216 of the second region II of the pipe, on which the pipe, located in the form of a meander, passes in the second direction of transportation.

A further connecting section 234 of the pipe 204 adjoins the further section 216, which, according to an embodiment, extends in the height direction Z of the refrigeration apparatus.

A second section 214b of the second pipe region II is adjacent to the connecting portion 234, on which the pipe, arranged in the form of a meander, extends in a second conveying direction.

Then, from the second section 214b, the pipe 204 is led to the exit 208.

In addition, the connecting portions 224-234 according to an embodiment extend in the height direction Z of the refrigeration apparatus.

Thus, the first nested portion region 236 according to the embodiment includes a portion 210a, a portion 212a and a portion 214a, the portion 214a, with the refrigerant flow direction D passing through the pipe 204, being located between the portion 210a and the portion 212a. Thus, section 214a is located adjacent to section 210a and section 212a.

The second sub-area zone 238 includes, according to an embodiment, a portion 210b, a portion 212b and a portion 214b, as well as a further portion 216, the portion 214b with the refrigerant flow direction D passing through pipe 204 being located between portion 210b and portion 212b. Thus, section 214b is located adjacent to section 210b and section 212b.

Thanks to the zones 236, 238 of the enclosed sections, a more uniform decrease in the temperature of the carrier 202 is achieved and thereby the energy efficiency of the refrigeration apparatus 100 is increased.

Sections 210a, 210b, 212a, 212b, 214a, 214b according to an embodiment comprise one to ten, for example, one to five, meander bends to cause uniform cooling in the portion of the carrier 202. According to an embodiment, portions 210a, 210b, 212a, 212b, 214a, 214b cover portions of the area of the carrier 202 of different sizes. So, the second section 212b covers one quarter of the area of the carrier 202, sections 210a, 212a and 214a - one third, and sections 210b, 214b, as well as 216 - one-eighth of the area of the carrier. Thus, it is possible to adapt the individual sections 210a, 210b, 212a, 212b, 214a, 214b to the sizes of their respective cooling chambers 106, 108.

In FIG. 2 further shows that two meander bends 218 are located above the level of coolant that forms when refrigerant builds up during the shutdown of evaporator 200. The refrigerant collected there must flow through sections 214b, 216 and 214a before it enters outlet 208. where he is involved in heat transfer.

In addition, in FIG. 2, it is shown that, according to an embodiment, two meander bends 218 are located in front of the outlet 208. This ensures that when starting the compressor of the refrigeration unit, the cooling medium which foams and rushes towards the compressor is still involved in a certain heat exchange in the evaporator 200 before it reaches exit 208.

In FIG. 3 shows an evaporator 200 in which a pipe 204 is located on a carrier 202 between an inlet 206 and an outlet 208 in a portion 210a of a first pipe region I, passing in a meander shape in a first conveying direction. Moreover, according to an embodiment, the first transportation direction passes, taking into account the permissible errors, along an axis that is directed along the height Z of the refrigeration apparatus, and from top to bottom.

Adjacent to the first portion 210a is a connecting portion 224 of the pipe 204, which forms a refrigerant-conducting connection with a portion 214a of the second pipe region II, on which the pipe 204, located in the form of a meander, extends in a second conveying direction. According to an embodiment, the connecting portion 224 extends, taking into account technological tolerances, in the Z direction of the height of the refrigerator, from top to bottom.

According to an embodiment, a further portion 300 of the third region III of the pipe is directly adjacent to the second section 214a, on which the pipe 204, located on the medium 202 in the form of a meander, extends in the third direction of transportation. In this case, the third transportation direction according to the embodiment is, taking into account technological tolerances, along an axis that is directed along the width Y of the refrigerator, from right to left.

While the first conveying direction and the second conveying direction extend along an axis that is directed along the height Z of the refrigerating apparatus, with the first conveying direction and the second conveying direction being opposite to each other, the third conveying direction extends in the width direction Y of the refrigerating apparatus. Thus, the first transportation direction, the second transportation direction, and the third transportation direction extend in different directions. In FIG. 3 shows that the third transport direction extends at right angles to the first propagation direction E1 and the second propagation direction E2.

The nested portion zone 236 includes, according to an embodiment, a portion 210a, a portion 214a, and a portion 300, the portion 300 being located in the direction D of the refrigerant flowing through the pipe 204 between the portion 210a and the portion 214a. Thus, section 300 is located adjacent to section 210a and section 214a.

The sub-area zone 236 can be used both for cooling the upper cooling chamber 106 and for cooling the lower cooling chamber 108, for example, one of the sections 210a or 212a corresponds to the freezer, and the other sections 212a and 300 or 210a and 300 correspond to the refrigerator .

In FIG. 4 shows an evaporator 200, which has a first zone 236 of nested sections and a second zone 238 of nested sections.

In a first portion 210a of the first pipe region I, a pipe 204 arranged in a meander shape on the carrier 202 extends in a first conveying direction, the connecting portion 224 of the pipe 204 carrying out a refrigerant connection with a portion 212a of the first pipe region I on which the pipe 204 is located on the carrier 202, continuing the meander-like passage in the first transport direction.

The connecting portion 228 of the pipe 204 makes a refrigerant-conducting connection with the portion 212b, wherein according to an embodiment, the connecting portion 228 extends in the Z direction of the height of the refrigeration apparatus.

At section 212b of the first pipe region I, the pipe 204 located on the carrier 202 extends in a meander shape in a first conveying direction.

A connecting portion 230 of the pipe 204 is adjacent to the portion 212b, and according to an embodiment, the connecting portion 230 extends in the Z direction of the height of the refrigeration apparatus.

Adjacent to the connecting portion 230 is a portion 214a of the second pipe region II, on which the pipe 204 located on the carrier 202 extends in the form of a meander in the second conveying direction.

A connecting portion 232 of the pipe 204 is adjacent to portion 214a, and according to an embodiment, the connecting portion 232 extends in the Z direction of the height of the refrigeration apparatus. In addition, two meander bends 218 form a second portion 214b of a second pipe region II.

A connecting portion 232 is adjacent to a third portion 300 of a third region III of the pipe, in which the pipe 204 extends in a meander shape in a third conveying direction.

The third section 300 is connected to the outlet 208 with the possibility of passage of refrigerant.

The nested portion zone 236 includes, according to an embodiment, a portion 210a, a portion 212a, and a portion 300, the portion 300 being located in the direction D of the refrigerant flowing through the pipe 204 between the portion 210a and the portion 212a. Thus, section 300 is located adjacent to section 210a and section 212a.

The second nested portion area 238 includes a portion 210b, a portion 212b and a portion 214b, the portion 214b being located in the direction D of the refrigerant flowing through the pipe 204 between the portion 210b and the portion 212b. Thus, section 214b is located adjacent to section 210b and section 212b.

In FIG. 4 shows that within the first zone 236 of the enclosed sections, all three directions of transportation are different. According to an embodiment, three transportation directions are arranged, taking into account technological tolerances, at right angles to each other.

It is possible to attach the first zone 236 nested sections to the upper cooling chamber 106, while the second zone 238 nested sections can be attached to the lower cooling chamber 108.

In FIG. 5 shows an evaporator 200 in which the pipe 204 between the inlet 206 and the outlet 208 passes in the form of a meander on the carrier 202 along a portion 210a of the first pipe region I in the first conveying direction.

Adjacent to the first portion 210a is a connecting portion 224 of the pipe 204, which forms a refrigerant-conducting connection with the first portion 300 of the second pipe region II, on which the pipe 210a, located in the shape of a meander, extends in a second conveying direction. The connecting portion 224 extends according to an embodiment in the Z direction of the height of the refrigeration apparatus.

The connecting portion 230 is adjacent to the portion 300, and the connecting portion 230 according to an embodiment, in its first portion extends in the flow direction D coinciding with the height direction Z of the refrigeration unit, and in the second portion in the flow direction D coinciding with the width direction Y of the refrigeration unit .

A second portion 500 of a second pipe region II is adjacent to the connecting portion 230, on which the pipe 204, located on the meander-shaped carrier 202, extends in a second conveying direction.

According to an embodiment, the second conveying direction extends, taking into account technological tolerances, in the width direction Y of the refrigeration apparatus, from right to left. The first transport direction I according to the embodiment is, taking into account technological tolerances, in the Z direction of the height of the refrigeration unit, from top to bottom. Thus, the first transportation direction is different from the second transportation direction. According to an embodiment, the first transportation direction and the second transportation direction are arranged, taking into account technological tolerances, at right angles to each other.

Sections 210a, 300 and 500 form a zone 236 of nested sections, with section 500 located in the direction D of the refrigerant flowing through pipe 204 between section 210a and section 300. Thus, section 500 is located next to section 210a and section 300.

It is possible to use zone 236 of the enclosed sections for cooling both the refrigerating chamber and the freezing chamber, for example, one of the sections 210a or 300 is connected to the freezer, and the other sections 300 and 500 or 210a and 500 are connected to the refrigerating chamber.

In FIG. 6 shows an evaporator 200 in which a pipe 204 located in a meander shape on a carrier 202 between the inlet 206 and the outlet 208 in the first portion 210a of the first pipe region I extends in a first conveying direction.

Adjacent to section 210a is a connecting section 224 of pipe 204, which forms a refrigerant-conducting connection with section 214a of the second pipe region II, on which the pipe 204 located in the shape of a meander extends in a second conveying direction. The connecting portion 224 extends according to an embodiment in the Z direction of the height of the refrigeration apparatus.

The connecting portion 230 of the pipe 204 is adjacent to the portion 214a, and according to an embodiment, the connecting portion 230 with the flow direction D extends in the Z direction of the height of the refrigeration apparatus. According to an embodiment, the connecting portion 224 and the connecting portion 230 extend partially parallel to each other.

Adjacent to the connecting portion 224 is a second portion 212a of a first pipe region I, on which a pipe arranged in the form of a meander on the carrier 202 extends in a first conveying direction.

Sections 210a, 212a and 214a form an area 236 of nested sections, wherein section 212a is located in the direction D of the refrigerant flowing through pipe 204 between section 210a and section 214a. Thus, section 212a is located adjacent to section 210a and section 214a.

The enclosed area zone 236 can be used to cool both the refrigeration chamber and the freezer, for example, one of the sections 210a or 212a is connected to the freezer and the other sections 212a and 214a or 210a and 214a are connected to the refrigerator.

Designation List

100 refrigeration unit

102 upper door of the refrigerator

104 bottom door of the refrigerator

106 upper cooling chamber

108 lower cooling chamber

200 vaporizer

202 media

204 pipe

206 entrance

208 exit

210a plot

210b plot

212a plot

212b plot

214a plot

214b plot

216 plot

218 meander

220 straight pipe section

222 arcuate section

224 connecting section

226 junction

228 connecting section

230 connecting section

232 connecting section

234 connecting section

236 first zone of nested plots

238 second zone of nested sections

300 plot

500 plot

I first pipe region

II second region of the pipe

II 'second pipe region

II '' second pipe area

III third pipe region

III 'third pipe region

III '' third pipe region

D flow direction

E1 first direction of distribution

E2 second direction of distribution

L longitudinal direction

X depth direction of the refrigerator

Y direction of the width of the refrigerator

Z direction of the height of the refrigerator

Claims (14)

1. A refrigeration apparatus (100) with an evaporator (200), the evaporator (200) comprising a carrier (202) and a pipe (204) located on the carrier (202) for passing refrigerant, the pipe (204) on the carrier (202) having a first a pipe region (I) through which, in the operating position of the refrigeration unit (100), it is possible for the refrigerant to flow in the first transport direction, from top to bottom, and a second pipe region (II), in which the refrigerant can pass in the second transport direction, from bottom to top, characterized in that the first region (I) of the pipe has astok (210a, 212a, 210b, 212b) and the second region (II) of the pipe has a section (214a, 214b, 300, 500), and these sections are placed on the carrier (202) with an insert into each other, while the carrier (202) made in the form of a plate. 2. The refrigeration apparatus (100) according to claim 1, characterized in that the first region (I) of the pipe has two sections (210a, 210b, 212a, 212b), and the second region (II) of the pipe has one section (214a, 214b) which is located adjacent to two sections (210a, 210b, 212a, 212b) of the first pipe region (I). 3. The refrigeration apparatus (100) according to claim 2, characterized in that the section (214a, 214b) of the second region (II) of the pipe, which is located next to two sections (210a, 212a, 210b, 212b,) of the first region (I) pipes made with the possibility of passing through it the refrigerant in the second direction of transportation. 4. The refrigeration apparatus (100) according to claim 2, characterized in that the section (214a, 214b) of the second region (II) of the pipe, which is located next to two sections (210a, 212a, 210b, 212b) of the first region (I) of the pipe made with the possibility of passing through it the refrigerant in the second direction of transportation. 5. The refrigeration apparatus (100) according to claim 1, characterized in that the first region (I) of the pipe is arranged to allow the refrigerant to pass through it substantially in the direction of gravity. 6. The refrigeration apparatus (100) according to one of the preceding claims, characterized in that the pipe (204) on the carrier (202) has a third region (III) of the pipe configured to allow the refrigerant to pass through it substantially in the transport direction, which differs from directions of transportation in the first region (I) of the pipe; and directions of transportation in the second region (II) of the pipe. 7. The refrigeration unit (100) according to claim 6, characterized in that the direction of transportation in the first region (I) of the pipe and / or the direction of transportation in the second region (II) of the pipe pass, taking into account technological tolerances, at right angles to the direction of transportation in the third region (III) of the pipe. 8. The refrigeration unit (100) according to one of paragraphs. 1-5, 7, characterized in that one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) has from two to ten bends (218) of the meander, in particular from three to five bends (218 ) meander. 9. The refrigeration unit (100) according to one of paragraphs. 1-5, 7, characterized in that one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) covers, taking into account technological tolerances, half, in particular one third, in particular one quarter, in particular one-eighth of the carrier area (202). 10. The refrigerator (100) according to one of paragraphs. 1-5, 7, characterized in that at least two bends (236) of the meander of one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500) are located above the level of the coolant that forms the refrigerant, accumulating during periods of inactivity of the evaporator (200). 11. The refrigeration unit (100) according to one of paragraphs. 1-5, 7, characterized in that at least two bends (236) of the meander of one of the sections (210a, 210b, 212a, 212b, 214a, 214b, 300, 500), which are located above the level of the coolant that forms the refrigerant accumulating during periods of inactivity of the evaporator (200) are located in front of the outlet (206) of the evaporator (200). 12. The refrigerator (100) according to one of paragraphs. 1-5, 7, characterized in that the sections (210A, 210b) of the first region (I) of the pipe are connected by means of a connecting section (224, 228) with the possibility of passage of refrigerant. 13. The refrigerator (100) according to one of paragraphs. 1-5, 7, characterized in that the sections (212a, 212b) of the second region (II) of the pipe are connected by means of a connecting section (230, 234) with the possibility of passage of refrigerant. 14. The refrigerator (100) according to one of paragraphs. 1-5, 7, characterized in that the evaporator (200) is designed as a plate-tube evaporator.

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