CN103097841A

CN103097841A - Refrigeration device with skin condenser

Info

Publication number: CN103097841A
Application number: CN2011800431187A
Authority: CN
Inventors: S·霍尔策
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2010-09-07
Filing date: 2011-08-24
Publication date: 2013-05-08
Anticipated expiration: 2031-08-24
Also published as: DE102010040340A1; EP2614324A2; EP2614324B1; WO2012031894A2; WO2012031894A3; CN103097841B; ES2463990T3

Abstract

The invention relates to a refrigeration device, in particular a domestic refrigeration device, comprising a heat-insulating housing (2, 3) surrounding a storage chamber. Sections (6, 9, 11) of a coolant line are arranged on the outer skin of the housing on at least two planes and are fluidically connected in parallel.

Description

Refrigerating appliance with side plate condenser

The present invention relates to a kind of refrigerating appliance, Domestic refrigerator especially, this refrigerating appliance have the heat insulation housing that surrounds storage chamber, and in this housing, condenser is integrated in the crust of housing.Such evaporimeter is also known with side plate condenser (Skin-Verfluessiger).

This refrigerating appliance generally includes internal container, at least part of crust by sheet material forming, be enclosed between internal container and crust spacer material layer and at the refrigerant pipe that extends between crust and spacer material layer on the inboard of crust.

Refrigerating appliance with such side plate condenser does not have particularly preferred efficient usually, because, flow back in storage chamber but see through spacer material layer by outwards not distributing from utensil with the part that spacer material layer is in the heat that close thermal discharges in contacting by condenser.

In order to minimize such backflow, it is low as far as possible that the temperature of condenser must keep.But still realize needed heat radiation power for although condenser temperature is low, need large condenser area.Therefore propose, arrange side plate condenser to such an extent that be distributed on a plurality of walls of refrigerating appliance.Yet, have problems at this, that is, the formation refrigerating appliance body of the leap crust not refrigerant pipe of the part at the turning between homonymy tends to narrow down as shown in WO2008/077699A1.Wish such narrowing down on the transition part between condenser and evaporimeter, and between the entrance and exit of condenser, cause on the one hand the high compressor horsepower of needs with circulating refrigerant owing to the one or more this Pressure Drops that narrow down, on the other hand, the adiabatic expansion of cold-producing medium causes cooling in such stenosis, consequently the zone that is positioned at such stenosis downstream of condenser almost is helpless to hot exchange power.

A kind of alternative is, is arranged in the connection that is one another in series of a plurality of condenser elements on refrigerating appliance body one outside.Because these condenser elements must be assemblied in the basic height that equates, to take full advantage of operational surface, to only have when each independent element is included in the pipe section that rises on flow direction and descend, such serial connection is only practical.This causes the cold-producing medium of condensation to be gathered in the local bosom of condenser and the cold-producing medium that is still gaseous state must be through fluid and extracts out.When environment temperature is low, if the liquid refrigerant ratio in condenser is relatively high, therefore need the cold-producing medium of larger loading, against gravity, liquid refrigerant is pressed onto the outlet of condenser.The bubble to rising in liquid of gaseous refrigerant can cause producing interfering noise.This continues the relatively long time, until have liquid refrigerant available on condensator outlet after connecting compressor.Off-energy in each off-phases of compressor because liquid refrigerant remains in condenser and in condenser with being used the evaporation or even discharge from evaporimeter when liquid refrigerant evaporates.

Task of the present invention is to realize a kind of refrigerating appliance, this refrigerating appliance have extend on the crust of apparatus shell, as the refrigerant pipe of condenser, it can provide liquid refrigerant with little delay and/or run minimized in interference noise.

This task solves by such mode, namely, at refrigerating appliance, especially in Domestic refrigerator, this refrigerating appliance has storage chamber, the heat insulation housing of encirclement, in this housing, the section with refrigerant pipe on the crust of housing is arranged in two planes at least, and the section that is arranged in Different Plane connects on flow technique abreast.Such structure allows both to avoid between the section of mutually following of refrigerant pipe, undesirable slype being arranged, mutually the following of also avoid rising section and decline section.

Suitable is that the different walls of different plane difference corresponding housing that is to say that the section that is arranged in Different Plane is arranged on the different exterior faces of housing.

These exterior faces should comprise a rear wall and sidewall of housing at least, preferably include a rear wall and two sidewalls.

Each section preferred arrangements of refrigerant pipe is on a flat board.Two this plates can be each other in engaging squarely.

But can be also, a unique plate comprises at least two parts that link into an integrated entity along sweep, arranges respectively a section of refrigerant pipe on these parts.

This section of each of refrigerant pipe preferably includes one, and upwardly extending upstream portion and one put go back to bently downstream part to downward-extension from the top substantially as the crow flies from these sections common crosspoints to the top.

These sections of refrigerant pipe can meet on drier or on choke valve.

Being arranged in parallel of these sections allows for these sections and uses respectively the conduit with relatively little cross-sectional area.In common condenser, the cross-sectional area of conduit is approximately 10mm usually ², and in refrigerating appliance according to the present invention, in each section of conduit, cross-sectional area is less than 5mm ²Just enough.

Other features and advantages of the present invention are with reference to accompanying drawing, are drawn by the following explanation of embodiment.Accompanying drawing illustrates:

Fig. 1 is according to the schematic diagram of the refrigerant loop of Domestic refrigerator of the present invention;

The space of the parts shown in Figure 1 in Fig. 2 refrigerating appliance is arranged;

The top view of Fig. 3 condenser of the refrigerating appliance of the second configuration according to the present invention;

Fig. 4 is according to the profile of the rear wall of refrigerating appliance of the present invention;

The side view that is similar to Fig. 4 of Fig. 5 refrigerating appliance sidewall; With

Fig. 6 is according to the side view that is similar to Fig. 4 of the rear wall of the configuration of slightly revising.

Fig. 1 is the schematic diagram according to the parts of the refrigerant loop of refrigerating appliance of the present invention.Refrigerant pipe 3 is connected with the pressure export 2 of compressor 1, and this refrigerant pipe extends until the second branch point 5 through the first branch point 4.Extend to the first point 8 through the first plate 7 from the pipeline 6 of branch point 4s, second pipe 9 extends to point 8 through the second plate 10 from branch point 5, and the 3rd pipeline 11 extends to the second point 13 through the 3rd plate 12 from branch point 5.The size of these plates 12 can be different; The same length of the

pipeline

6,9,11 of their extensions of process, and the cross section of pipeline is also identical and be significantly less than the cross section of refrigerant pipe 3 or the cross section of 15 refrigerant pipes 14 that extend from point 8 to drier, to guarantee that cold-producing medium is distributed on three

plates

7,10,12 equably.Also it is contemplated that, make the pipeline 9 on less plate 10 longer than

pipeline

6,11, will supply with to

larger plate

7,12 and thereby make the radiating efficiency of the per unit area on all three blocks of

plates

7,10,12 basic identical more than 1/3rd cold-producing medium respectively.

The

dispenser

4,5 and the

point

8,13 that separately show in Fig. 1 also can pool respectively unique branch point (

pipeline

6,9,11 guide all three

plates

7,10 into from this branch point, 12) or a unique point (these

pipelines

6,9,11 are incorporated in again on this point).Such branch point can so be set directly on compressor 1, makes separately the interface of each

pipeline

6,9,11 from the housing of compressor 1.In a similar fashion, drier 15 also can be served as point, and its mode is to consist of interface separately, that be used for

pipeline

6,9,11 on its housing.

Pipeline

6,9,11 respectively at

plate

7,10, arrives

plate

7,10,12 on the input port 16 on 12 lower rib, and substantially vertically extends upward on section 17 until top 18 from this input port.On section 17, condensation does not occur in cold-producing medium substantially.Be condensate in 18 downstreams, top and just occuring on the section 19 of downward-extension with returning song, this section forms the much longer part of

pipeline

6,9,11.In this section 19, the cold-producing medium that condenses part is due to its gravity, and part is flowed the swash of wave together by uncooled cold-producing medium still, and at

plate

7,10, the direction of the output port 20 on 12 lower limb is mobile to also.

Pipeline

6,9,11 free diameter is at about 3mm ²The time be in Domestic refrigerator the pipe diameter general value 1/3rd.Because cold-producing medium stream is assigned on all three

pipelines

6,9,11 substantially equably,

pipeline

6,9, in 11 the flowing velocity of cold-producing medium basically with the common condenser that there is no a parallelpiped in identical.

Pipeline

6,9,11 can soldering at

plate

7,10, on 12 or fix in other known mode, therefore to form the heat-exchanging

part

22,23,24 of three band-tube types.In such heat exchanger, use the advantage of the pipeline with little cross section to be, corresponding tube material can be than having common 10mm ²Free cross section tube material more cheaply for.But also it is contemplated that, heat-exchanging

part

22,23,24 realize with pressure welding (Rollbond) technology respectively.

The capillary 21 of guiding evaporimeter 25 into is connected with drier 15.22-24 is the same with heat-exchanging part, and this evaporimeter 25 can be implemented with pressure welding technology or band-tube type technology.1 suction pipe that draws back 26 from evaporimeter 25 to compressor surrounds capillary 21 on the part of capillary pipe length.

Fig. 2 illustrates heat-exchanging part 22-24 and the layout of evaporimeter 25 on the housing of family expenses refrigerating appliance with schematic perspective view.The housing of this utensil comprises body and door, and is because these are known, not shown in the drawings.Body 1 also in known manner by with the skin element of the internal container of plastics pull and stretch, plate shape and fill up internal container and skin element between the isolated material of intermediate space form.The skin element of body sidewall can be identical with plate 7,12.Also it is contemplated that, these skin element are made by thin sheet material respectively, bonding or the mode thermal conductivity do not seen at the exterior face of sheet material with other fixed

head

7,12 well on the inner surface of this thin plate.

The plate 10 of the formation body rear wall crust of heat-exchanging part 23 and the evaporimeter 25 that is bonded on the internal container rear wall have the height less than

sidewall paneling

7,12, to vacate the space as the machine chamber 27 that receives compressor 1 below them.

Fig. 3 shows the top view of three heat-exchanging

parts

22,23,24 of the second configuration according to the present invention.Three heat-exchanging

parts

22,23,24 here are implemented on common planar plate 31 with the pressure welding technology, are fixed on

plate

32,33,34 on this common plate 31, that form

pipeline

6,9,11 and are separated from each other by the gap.Plate 31 is crooked on the sweep 35 that extends by these gaps, to obtain heat-exchanging

part

22,23,24 mutual rectangular layouts.

The schematically illustrated profile by the body rear wall of Fig. 4, wherein, the rear wall of the carrying evaporimeter 25 of internal container is with 28 expressions.Evaporimeter 25 and parts 23 are here respectively the pressure welding types, wherein are interpreted as, the two also can consider to realize with the band-tube type technology.

Because compare with the side, the rear wall of apparatus shell generally can not be seen, is placed on this rear wall in order to can dispel the heat as far as possible without barrier to plate 10 exposures of heat-exchanging part 23.

The profile that is similar to Fig. 4 of the sidewall of body shown in Fig. 5.The difference of Fig. 5 and Fig. 4 is on the one hand, lacks evaporimeter between internal container 28 and isolated material 29, and in situation shown here, has the crust 30 of being made by sheet material, and plate 7 level lands of heat exchange elements 22 are bonded on this sheet material.

With the body sidewall differently, also consider layout as shown in Figure 6 on rear wall, in this arrangement, the flat plate 10 of heat-exchanging part 23 is placed on the rear wall of utensil towards isolated material 29 and pipeline 9 with exposing.Such layout enlarged parts 23 can be thereon with dissipation of heat surface in the environment and dwindled parts thereon can be with dissipation of heat the surface to the isolated material 29 and improved by this way the efficient of utensil.

Claims

1. refrigerating appliance, especially Domestic refrigerator, have the heat insulation housing (2 that surrounds storage chamber, 3), wherein, on the crust of described housing, the section (6 of refrigerant pipe, 9,11) be arranged at least two planes, it is characterized in that, be arranged in the section (6 in Different Plane, 9,11) connect abreast on flow technique.

2. according to claim 1 refrigerating appliance, is characterized in that, described section (6,9,11) is arranged on the different exterior faces of housing.

3. according to claim 2 refrigerating appliance, is characterized in that, described exterior face comprises a rear wall and sidewall of housing (2,3) at least.

4. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, described section (6,9,11) is arranged between the crust (30) and spacer material layer (29) of housing.

5. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, each section (6,9,11) is arranged on a smooth plate (7,10,12).

6. the refrigerating appliance of any one according to claim 1 to 4, it is characterized in that, plate (31) comprises at least two parts that connect along sweep (35) single type ground, and respectively arranges a section (6 of refrigerant pipe on each of described part, 9,11).

7. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, each section of described refrigerant pipe (6,9,11) comprises one, and (18) go out to beam back bently downstream part (19) to downward-extension from the top.

8. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, each section of described refrigerant pipe (6,9,11) comprise one from branch point (4,5) to the top (18) continuous upwardly extending upstream portion (17).

9. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, the section of described refrigerant pipe (6,9,11) upward or on choke valve (21) meets at drier (15).

10. according to the refrigerating appliance of any one in aforementioned claim, it is characterized in that, the free cross section of each section of described refrigerant pipe (6,9,11) is less than 5mm ²