EP2414747A2

EP2414747A2 - Household refrigerator having an evaporator circuit board comprising a discharge plate and a method for producing such an evaporator circuit board comprising a discharge plate

Info

Publication number: EP2414747A2
Application number: EP10707049A
Authority: EP
Inventors: Wolfgang Nuiding
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2009-03-31
Filing date: 2010-03-09
Publication date: 2012-02-08
Also published as: WO2010112301A2; RU2011140424A; WO2010112301A3; DE102009002032A1; CN102365511A

Abstract

The invention relates to a household refrigerator (10), comprising a body (11) having an inside container (12) which delimits at least one cooling chamber (15) and at least one evaporator (17) which is operatively connected to a refrigeration apparatus for cooling the at least one cooling chamber and which is arranged in the associated cooling chamber at a distance from an inner wall (16) of the inside container, wherein the inner wall is associated with a condensation water collecting channel (20) arranged beneath the evaporator for collecting the condensation water dripping from the evaporator. In order to provide improved discharge of the condensation water dripping from the evaporator into the condensation water collecting channel, the evaporator comprises a discharge plate for diverting the condensation water dripping from the evaporator towards the inner wall. Thus, the condensation water drops can flow off into the condensation water collecting channel along the inner wall without splash condensation water splashing into the cooling chamber.

Description

Domestic refrigerating appliance with a discharge plate having evaporator plate and method for producing such an evaporator plate with deflector

The present invention relates to a household refrigerating appliance, comprising a body with an inner container defining at least one cooling space and at least one operatively connected to a cooling device for cooling the at least one cooling chamber, which is arranged in the associated cooling space at a distance from an inner wall of the inner container wherein the inner wall is associated with a condensate collecting channel arranged below the evaporator for collecting the condensate dripping from the evaporator.

A household refrigerator is described in DE 199 07 124 A1. The household refrigerating appliance described therein has a cooling space with a bottom, which is provided below the evaporator with a condensation water collecting channel, which is arranged substantially to cover the meltwater accumulating during a defrosting process of the evaporator over the width of the cooling space. The dew water collecting channel has a gutter bed with a projecting approximately in the middle of its width section. The gutter bed is formed from a gutter wall and a gutter bottom, at the free edges of the gutter wall is arranged circumferentially. The channel bottom has a gradient, which tapers onto an outflow opening with a sickle-like opening cross-section arranged inside the projecting section. The drain opening opens into a condensate drain pipe, which has a sickle-like flow cross-section as the drain opening.

The object of the invention is to provide a household refrigeration appliance with an improved discharge of the dewater dripping from an evaporator in a gutter.

The object is achieved by a household refrigerating appliance, comprising a body with an inner container, which delimits at least one cooling space, and at least one evaporator, which is operatively connected to a refrigeration device for cooling the at least one refrigerating space and located at a distance from an inner cooling space Wall of the inner container is arranged, wherein the inner wall is associated with a below the evaporator arranged dew water collecting channel for collecting the dripping from the evaporator condensation water and wherein the evaporator has a discharge channel for deflecting the dew water dripping from the evaporator in the direction of the inner wall.

By the evaporator having a discharge chute for deflecting the dew water dripping from the evaporator in the direction of the inner wall, a secure introduction of the condensation water is ensured to the inner wall of the inner container or to the condensation gutter.

With the invention it is achieved that the condensation water dripping from the evaporator is not exposed to any deep drop distance and thus does not experience any great acceleration, as a result of which the dew drops will impinge on the condensation gutter at high speed and splashed condensation would spurt out into the cooling space. With the discharge chute according to the invention, the dew drops which dissolve from a lower edge of the evaporator undergo only a slight acceleration over a short drop height before impinging on the discharge chute. This prevents spraying. Furthermore, the dew drops are discharged to the inner wall of the inner container, so that the dew drops are not exposed to a deep fall distance, but run along the inner wall along. If the condensate collecting gutter is located directly adjacent to the inner wall, the dew drops can immediately drain into the condensation gutter, without allowing spray-thaw water to splash out into the cold room.

Purpose of the invention is also to clean the defrost water inside the refrigerator compartment evaporators in a gutter ie to direct the condensation water gutter. In the otherwise used non-internal evaporators of the evaporator sits directly behind the inner container rear wall, with the moisture precipitates on the inner back of the refrigerator compartment and can be relatively safely conducted from there into the gutter. By contrast, the internal evaporator is placed in front of the back wall of the appliance at a distance in the cold room. In this case, the moisture, ie the condensation, is deposited on the colder evaporator surface and not on the inner rear of the device. During defrosting therefore the defrost water flows at a relatively high speed the evaporator down, bounces on the remotely located below gutter and injected because of the large drop height partially into the interior, ie the refrigerator. One solution is that the drainage and thus the free fall of the defrost water are largely prevented by an additional discharge chute mounted at a short distance from the lower edge of the evaporator and that the water is directed to the rear wall of the appliance in a defined manner. From there it can then be routed as usual down into the gutter. The aim of the invention is also to avoid a separate additional part and to transfer its functions to the evaporator. This is realized by virtue of the fact that the evaporator has a discharge channel or a discharge plate in the lower region, or the evaporator is designed such that a discharge channel or a discharge plate can be bent out of the lower area of the evaporator. Such a one-piece, unifying training brings a cost advantage, since no additional parts are required. The evaporator can be designed as evaporator plate and the deflector be arranged along a lower edge of the evaporator plate. The deflector plate can either be fastened to the evaporator plate or be formed by a section of the evaporator plate.

The drainage channel or the deflecting plate can be designed to divert the condensation water dripping from one of the inner wall sides of the evaporator plate as well as from the side of the evaporator plate that is dripping away from the inner wall. As discharge channel can serve a separate component which is attached to the lower edge of the evaporator plate. In this case, the discharge chute be made for example as a plastic part. Such a discharge channel can be attached directly to the evaporator plate, for example, be clipped.

In the embodiment as a deflector, the drainage channel can be formed integrally, in particular in one piece with the evaporator plate. In this case, the deflector can be formed by a bent out of the plane of the evaporator plate portion of the evaporator plate. The evaporator plate and thus the deflector can be made of a good thermal conductivity material, in particular a metallic material such as. Aluminum. Aluminum is an exemplary material that also has sufficient ductility to be easily bent. In particular, the diverter plate may be formed by a vaporizer board section which is bounded downwardly by a lower edge of the vaporizer board and upwardly by an inner slot in the vaporizer board. Thus, the deflector can be made in one piece or einstoffig as a single component together with the evaporator plate. A separate assembly of the Ableitblechs on the evaporator plate can be omitted and thus made the production cost.

The evaporator board section can be arranged with its top facing the inner wall tilted out of the plane of the remaining evaporator plate. Due to this orientation, the condensation water dripping from the evaporator plate is fed to the inner wall due to gravity.

In this case, the evaporator blanks section can be connected by laterally opposite web portion with the rest of the evaporator plate. Consequently, the evaporator board section can be tilted out of the plane of the remaining evaporator board by pivoting the evaporator board section relative to the evaporator plate at the web sections in a hinge-like manner.

In particular, the vaporizer board section can be arranged tilted out of the plane of the remaining vaporizer board by plastically twisting the web section. In this case, a twisting or twisting of the web sections takes place. The web sections experienced by a permanent torsion.

To form both a first part of the evaporator board section, which projects from an inner wall facing the rear side of the evaporator plate and a second part of the Verdampferplatinen section projecting from a side facing away from the inner wall front side of the evaporator plate, the laterally opposite web portions in be arranged at a mean height of the Verdampferplatinen section. Both the first part of the evaporator-board section and the second part of the evaporator-board section may each be about 5 mm to 10 mm wide or may project from this level of the remaining evaporator board. In any case, the width of the first and second parts of the evaporator board section is to be chosen so wide that the dew drops dripping from the evaporator board can be collected more easily. In this case, the evaporator blanks section can be arranged swung out at an angle between 30 and 45 degrees from the plane of the remaining evaporator plate. By a slope less than 45 degrees and a slope greater than 30 degrees, a slowdown of dripping from the evaporator plate dew drops is ensured and at the same time ensures a gentle discharge of dew drops on the inner wall.

The evaporator board section may be arranged at such a height that the center line of the evaporator board section extending in the plane of the evaporator board is located at a distance between 5 mm and 10 mm below the incision edge of the remaining evaporator board adjoining the inner slot.

The evaporator board section may be angled so far that a section edge of the evaporator board section facing the inner wall is used up to a distance of 5 to 10 mm to the inner wall.

Two laterally opposite web sections, which in particular form holding means for the evaporator board section, can be formed by an inner slot and laterally opposite open-edged cuts of the evaporator board. Both the inner slot and the open-edged cuts can be made without cutting, for example by punching. The inner slot and the open-edged cuts can be made in the same operation by punching.

The invention also relates to a method for producing a discharge plate for deflecting the condensation water dripping from an evaporator plate of a household refrigerating appliance with the following steps:

- Stamping an evaporator plate from a sheet;

- Punching an inner slot and two edge-open cuts in the evaporator board for the formation of laterally opposite web portions, which connect the demarcated from the evaporator plate by punching Ableitblech with the rest of the evaporator plate; - Swiveling the Ableitblechs from the plane of the remaining evaporator plate by bending the web portions, such that in the installed position of the evaporator in the household refrigerator, the deflector is arranged facing with its top of the inner wall of an inner container of the household refrigerator.

In a further development of the method, the punching of the evaporator plate, the punching of the inner slot and the two edge-open incisions and the pivoting of the deflector by bending the web portions in a single step, in particular by a single punching / bending operation.

An exemplary embodiment of the invention is described with reference to the figures 1 to 5. From the detailed description of this specific embodiment, there are also other general features and advantages of the present invention.

Show it:

Figure 1 is a perspective view of a refrigeration appliance for household purposes with an evaporator plate and a drip-water gutter;

Figure 2 is a plan view of an evaporator plate according to the invention;

FIG. 3 shows a perspective view of the evaporator plate according to the invention with the evaporator plate section bent out;

FIG. 4 shows a partial view from the side of the evaporator plate according to the invention with the evaporator plate section bent out according to FIG. 3;

Figure 5 is a schematic representation of a process sequence according to the invention for producing a Ableitblechs for deflecting the dripping of the evaporator plate condensation water of the household refrigerator.

A household refrigerator 10 according to FIG. 1 has a body 1 1 with an inner container

12 on. The inner container 12 defines a cooling space 15 on an inner wall 16, an evaporator 17 is arranged. The evaporator 17 is at a distance to the rear inner wall 16 in the refrigerator 15 attached. The evaporator 17 is operatively connected to a non-illustrated refrigeration device. At a considerable distance below the evaporator 17, a condensate collecting gutter 20 is arranged. The condensate collecting channel 20 has a circumferential wall 21 and an outlet 22, which directs the condensed water collected in the condensation collecting channel 20 out of the cooling space 15. The condensate collecting channel 20 is arranged approximately at the level of a bottom 18 of the inner container 12. The condensate collecting channel 20 directly adjoins the inner wall 16 of the inner container 12 with its rear-side section of the wall 21. An evaporator plate 17a of the evaporator 17 is shown in FIG. 2 in isolation with a discharge plate 23 according to the invention.

The evaporator plate 17a shown in Fig. 2 is made of a flat flat plate. The evaporator plate 17a is made of a good thermal conductivity material, in particular aluminum and its alloys. The evaporator plate 17a has a rectangular basic shape. It is made of a thin metal sheet a few millimeters thick. The corners of the evaporator plate 17a may have chamfers 24. For fixing the evaporator plate 17a to the inner container 12 at a distance from the rear inner wall 16, the evaporator plate 17a fastening holes 25 on. The evaporator plate 17a has an inner slot 26 and two open-edged cuts 27a and 27b. A central straight region 28 of the inner slot 26 extends parallel to a lower edge 29 of the evaporator plate 17a. The middle straight portion 28 defines an evaporator board section 30 from above. The evaporator board section 30 is bounded at the bottom by the lower edge 29 of the evaporator plate 17a. The inner slot 26 has at a first end of the central straight portion 28 a first leg portion 31a branching off at right angles and at a second end of the middle straight portion 28 a second leg portion 31b likewise branching off at right angles. The first leg portion 31 a and the second leg portion 31 b are parallel to each other and at such a distance from each other, so that they limit the evaporator board portion 30 from the right and left. These lateral boundaries extend only partially and in particular a little less than half to the lower edge 29 of the evaporator plate 17a. Associated with the first leg section 31a, the first open-edged notch 27a is introduced into the evaporator plate 17a. Associated with the second leg section 31b, the second open-edged notch 27b is introduced into the evaporator plate 17a. Of the first open-edged recess 27a is aligned with the longitudinal extension of the first leg portion 31a, wherein between the first leg portion 31a and the first open-edged recess 27a, a first web portion 32a is formed. In the same way, the second open-edged recess 27b is aligned with the longitudinal extent of the second leg portion 31b, wherein a second leg portion 32b is formed between the second leg portion 31b and the second open-edged recess 27b. The two web sections 32a and 32b form holding bridges, which hold the evaporator board section 30 to the remaining evaporator board 17a. Through the inner slot 26 and the two open-edged cuts 27a, 27b, the evaporator board section 30 is delimited from the rest of the evaporator plate 17a. This demarcated evaporator board section 30 forms the deflector plate 23. The further function of the two web sections 32a and 32b is further explained in connection with FIG.

FIG. 3 shows the evaporator plate 17a according to FIG. 2 with a vaporizer plate section 30 or bent discharge plate 23 bent out of the plane of the vaporizer plate 17a. The vaporizer plate section 30 is formed by twisting or slightly twisting the two web sections 32a and 32b bent out of the plane of the evaporator board 17a. The evaporator board section 30 is tilted such that its upper side 33, as shown in FIG. 4, faces the inner wall 16 of the inner container 12, ie is directed towards it. The land portions 32a and 32b are disposed at a middle height of the evaporator board portion 30. The web sections 32a and 32b extend along the center line 34. By twisting or slight twisting of the two web sections 32a and 32b, a first part 35 of the evaporator board section 30 projects from a rear side 36 of the evaporator board 17a in the direction of the inner wall 16. A second part 37 of the Verdampferplatinen- section 30 protrudes from a front side 38 of the evaporator plate 17 a in the cooling space 15. As a result, a section edge 39 is used on the inner wall 16, that is to say moved toward the inner wall 16. Due to the influence of gravity, condensation water condensing on the front side 38 of the evaporator plate 17a runs as far as a lower incision edge 40. The lower incision edge 40 is formed by the upper edge of the middle straight region 28 of the inner slot 26. From the incision edge 40, the condensation water drips onto the upper side 33 of the evaporator-plate section 30 or the discharge plate 23. Due to the low drop height or the clearly reduced drop height, the condensation water is completely absorbed and no condensation water is injected into the cooling space 15. About the resulting opening of the inner slot 26 and due to the oblique angular position of the Verdampferplatinen section 30 with respect to the direction of gravity condensed on the front side 38 of the evaporator plate 17a condensation is directed to the rear, ie to the back 36 of the evaporator plate 17a and thus in the direction of the inner wall 16 , In an analogous manner, the condensation water condensing on the rear side 36 of the evaporator plate 17a also reaches the upper side 33 of the evaporator plate section 30 or the deflector plate 23 and, in particular, is conducted together with the condensation water from the front side 38 in the direction of the inner wall 16. A gap remains between the section edge 39 and the inner wall 16, so that the combined condensation water can flow along the inner wall 16 into the condensation collecting channel 20.

FIG. 5 shows a schematic illustration of a method sequence according to the invention for producing a discharge plate for deflecting the dew water of the household refrigerating appliance dripping off the evaporator plate. After a start A of the method, in a first method step S1, an evaporator plate 17a is punched out of a metal sheet. Subsequently, in a second method step S2, an inner slot 26 and two open-edged cuts 27a and 27b are punched into the evaporator plate 17a to form laterally opposite web portions 32a and 32b, which delimit the discharge plate 23 or the evaporator plate section delimited by the evaporator plate 17a by stamping 30 connect to the rest of the evaporator plate 17a. In a third method step S3, the deflector plate 23 or the evaporator plate section 30 is pivoted out of the plane of the remaining evaporator plate 17a by bending the web sections, such that in the installed position of the evaporator 17 in the household refrigerator 10 the deflector plate 23 or the evaporator plate section 30 is arranged with its upper side 33 of the inner wall 16 of an inner container 12 of the household refrigerating appliance 10 facing.

In a further development of the method, the punching of the evaporator plate 17a, the punching of the inner slot 26 and the two edge-open notches 27a and 27b and the pivoting of the deflector 23 or the Verdampferplatinen section 30 by bending the web portions 32a and 32b in a single step, Step S3, in particular by a single punching / bending process done.

Claims

1. Domestic refrigerating appliance, comprising a body (11) with an inner container (12) which delimits at least one cooling space (15) and at least one operatively connected to a cooling device for cooling the at least one cooling chamber (15) evaporator (17) in the associated cooling space (15) at a distance from an inner wall (16) of the inner container (12) is arranged, wherein the inner wall (16) has a below the evaporator (17) arranged condensation gutter (20) for collecting the of Evaporator (17) is associated with dripping condensate water, characterized in that the evaporator (17) has a discharge channel (23) for deflecting the dew water dripping from the evaporator (17) in the direction of the inner wall (16).

2. Domestic refrigerating appliance according to claim 1, characterized in that the evaporator (17) as evaporator plate (17 a) is formed and the discharge channel (23) along a lower edge (29) of the evaporator plate (17 a) is arranged.

3. Domestic refrigerating appliance according to claim 2, characterized in that the discharge channel (23) on the evaporator plate (17 a) is fixed.

4. Domestic refrigerating appliance according to claim 2, characterized in that the discharge chute (23) is a discharge plate that is formed by a Verdampferplatinen section (30).

5. Household refrigerating appliance according to claim 3 or 4, characterized in that the

Ableitrinne (23) or the Verdampferplatinen section (30) for deflecting the both of one of the inner wall (16) facing side of the evaporator plate (17a) and of the inner wall (16) facing away from the evaporator plate (17a) dripping Tauwassers is formed.

6. Domestic refrigerating appliance according to claim 4 or 5, characterized in that the

Ableitblech or the Verdampferplatinen section (30) of one of the plane Evaporator board (17 a) bent bent evaporator board section (30) is formed.

7. Domestic refrigerating appliance according to one of claims 4 to 6, characterized in that the deflector plate or the Verdampferplatinen section (30) of a evaporator blanks section (30) is formed, which is downwardly from a lower edge

(29) of the evaporator plate (17a) and upwardly from an inner slot (26) in the evaporator plate (17a) is limited.

8. Domestic refrigerating appliance according to claim 7, characterized in that the evaporator blanks section (30) with its upper side (33) of the inner wall (16) facing out of the plane of the remaining evaporator plate (17 a) is tilted out.

9. Domestic refrigerating appliance according to claim 8, characterized in that the evaporator board section (30) by laterally opposite web portion (32 a, 32 b) with the remaining evaporator plate (17 a) is connected.

10. Domestic refrigerating appliance according to claim 9, characterized in that the evaporator board section (30) is tilted out by plastic twisting of the web section (32a, 32b) out of the plane of the remaining evaporator plate (17a).

11. Domestic refrigerating appliance according to claim 10, characterized in that for the formation of both a first part (35) of the Verdampferplatinen section (30) of one of the inner wall (16) facing the rear side (36) of the evaporator plate (17 a) projects as well a second part (37) of the Verdampferplatinen- section (30) projecting from one of the inner wall (16) front side (38) of the evaporator plate (17a), the laterally opposite web sections (32a, 32b) at a medium height the evaporator board section (30) are arranged.

12. Domestic refrigerating appliance according to claim 11, characterized in that the evaporator blanks section (30) is arranged at an angle between 30 and 45 degrees out of the plane of the remaining evaporator plate (17a) swung out.

13. Domestic refrigerating appliance according to claim 1 1 or 12, characterized in that in the plane of the evaporator plate (17 a) extending center line of the evaporator blading section (30) at a distance between 5 mm and 10 mm below a to the inner slot (26) adjacent incision edge (40) of the remaining evaporator plate (17 a) is arranged.

14. Domestic refrigerating appliance according to one of claims 1 1 to 13, marked thereby, that one of the inner wall (16) facing section edge (39) of the Verdampferplatinen section (30) to a distance of 5 to 10 mm to the inner wall (16) is used.

15. Domestic refrigerating appliance according to one of claims 11 to 14, characterized in that the laterally opposite web portions (32a, 32b) by an inner slot (26) and laterally opposite edge-open notches (27a, 27b) of the evaporator plate (17a) are formed.

16. A method for producing a discharge plate or a Verdampferplatinen- section (30) for deflecting the dripping of an evaporator plate (17 a) condensation water of a household refrigerating appliance (10) with the following steps:

- stamping an evaporator plate (17a) from a sheet metal;

- Punching an inner slot (26) and two edge-open incisions (27a, 27b) in the evaporator plate (17a) to form laterally opposite web portions (32a, 32b), which from the evaporator plate (17a) delimited by the punching Ableitblech (26) or the evaporator board section (30) with the remaining evaporator plate (17a) connect; - Swiveling the Ableitblechs or the Verdampferplatinen section (30) from the plane of the remaining evaporator plate (17a) by bending the web portions (32a, 32b), such that in the installed position of the evaporator (17) in the household refrigerator (10) the deflector or the Verdampferplati- NEN section (30) with its upper side (33) of the inner wall (16) of a

Inner container (17) of the household refrigerating appliance (10) facing arranged.

17. The method according to claim 16, characterized in that the punching of the evaporator plate (17a), the punching of the inner slot (26) and the two edge-open notches (27a, 27b) and the pivoting of the Ableitblechs or

Evaporator blanks section (30) by bending the web portions (32a, 32b) takes place in a single step, in particular by a single punching / bending operation.