WO2008028781A2

WO2008028781A2 - Refrigerator

Info

Publication number: WO2008028781A2
Application number: PCT/EP2007/058511
Authority: WO
Inventors: Peter Eckartsberg
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2006-09-07
Filing date: 2007-08-16
Publication date: 2008-03-13
Also published as: RU2009110168A; DE202006013707U1; EP2064502A2; RU2437040C2; WO2008028781A3; CN101512269A

Abstract

The invention relates to a refrigerator comprising an interior, cooled by an evaporator. The refrigerator comprises a tube condenser (1) on the outside of the refrigerator and a vaporising dish (4), into which condensed water from the cooled interior is led. According to the invention, a tube section (8) of the tube condenser (1) runs through the vaporization dish (4) and is retained there by a clip (5), said clip (5) comprising a downwardly-open channel (18), forming a closed channel (18) for a part of the tube section (8) with the base (9) of the vaporization dish (4).

Description

The refrigerator

The invention relates to a refrigerator according to the preamble of claim 1.

Refrigerators have a closed interior, which is cooled by a refrigerant circuit. Usually, a compressor is provided on the outside of the refrigerator, which compresses the gaseous refrigerant and thereby heated. In the condenser, which is also attached to the outside, usually on the rear wall, the refrigerant releases its heat to the ambient air and is thereby liquefied. The pressurized liquid refrigerant expands into the evaporator in the interior of the refrigerator. It cools down strongly and returns to the gaseous state.

In the cooled interior of a refrigerator, the air, the z. B. When the door is opened, it cools down and condenses the moisture it contains. In order to dissipate the condensation, a channel is usually provided on the rear wall of the interior, which at its lowest point has a drain to the outside of the rear wall. There, the condensed water is introduced into an evaporation tray, which is arranged at a warm point, for example, over the compressor.

The size of the evaporation tray depends on the speed with which the condensate can evaporate. In order to keep the evaporation tray as small as possible, the condensate must therefore be supplied as much heat. It has therefore proven to be beneficial to lead a pipe section of the hot tube condenser through the evaporation tray so that it heats the condensate and thus rapid evaporation is stimulated.

In order to fix the pipe section in the evaporation tray, a staple made of spring steel is used, which with a molded hook from above a wall the evaporation tray is pushed. One leg of the hook is bent over a curve back up. With this rounding, the clamp presses on the pipe section and holds it on the bottom of the evaporation tray. However, it has been found that the pipe section at the rounding of the clip slip up or that the clip even at low tensile forces from the

Dissolve evaporation tray. It is therefore not guaranteed a secure hold of the pipe section in the evaporation tray.

The invention has for its object to form a refrigerator so that a pipe section of the tube condenser with a clamp securely in the

Evaporation tray can be attached. Furthermore, the clip should be inexpensive to manufacture.

The object is achieved according to the invention by a refrigeration device with the features of claim 1. Through the downwardly open channel of the clip is the

Tube section enclosed by three sides and therefore can not slip past the holding section over. Since the channel is pressed by the clamp down to the bottom of the evaporation tray, the pipe section is enclosed by four sides and can not leave this closed channel even with tensile forces occurring.

The clip is U-shaped and is slipped over the outer wall of the evaporation tray. In this way one obtains access to the outside of the evaporation tray and the holding action of the clip is not limited exclusively to a clamping fixation on a wall.

The extending on the outside of the evaporation shell leg of the clip ends in a hook, which is supported on the underside of the evaporation tray. As a result, the clamp, so to speak, surrounds the bottom of the evaporation tray by pressing the channel-shaped holding section from above and the hook from below against the floor. A simple removal or release of the clip can thus be excluded. To easily attach the clip, the hook has a bevel on its front. Through this slope, the hook slides well over the edge between the side wall and bottom of the evaporation tray. Also, a protrusion provided on the ground or an extension of the side wall beyond the ground can be overcome so well.

Also for ease of assembly but also to apply the necessary tension between the channel-shaped holding portion and the hook, a kink is provided in the extending on the outer wall of the evaporation shell leg of the clip. By pressing on the kink, the leg can be minimally extended during assembly of the clip until the hook has taken its final detent position.

In order for the clamp to be guided cleanly through the outer wall of the evaporation bowl, an extension is provided on the channel-shaped holding portion with which the clamp is supported on the inside of the outer wall in the vicinity of the upper edge. Since the outer leg is also at the top of the evaporation tray in contact with this, a secure and defined fit of the clip is guaranteed.

Advantageously, the clip is made of plastic. This means that the clamp is absolutely corrosion resistant and has a much longer life than a spring steel clamp.

The clip can be inexpensively manufactured as an injection molded part. However, the production is even cheaper when a corresponding plastic Profi I is extruded. From this profile then the brackets can be cut to the required width.

Further details and advantages of the invention will become apparent from the dependent claims in connection with the description of an embodiment which is based on the Drawing is explained in detail.

Show it:

1, the evaporation tray with the mounted pipe clamp of a refrigeration device according to the invention,

Fig. 2 as a detailed drawing of the locked in the evaporator shell pipe clamp as an injection molded part with the guided Verflüssigerrohrabschnitt and

Fig. 3 is a section through the pipe clamp shown in FIG. 2.

Fig. 1 shows a condenser 1 with its tubes 2 and wire rods 3, an evaporation tray 4, a pipe clamp 5 and a throttle 6, which are commonly used in refrigerators. The tube 2, which is flanged to the compressor, not shown here, is guided into the evaporation tray 4 as far as possible directly. There runs a piece of pipe 8 in a straight shape at the bottom 9 (see Figure 2) of the evaporator shell 4, with the largest possible distance is covered. Thus, the pipe section 8 remains in the bottom region of the evaporation tray 4, a certain vertical pressure must be exerted on the pipe section 8, but not allowed to be too strong. This can be ensured by the elastic construction of this pipe section, which is achieved by two pipe bends 7 adjoining the straight pipe section 8, both of which must not be fixed by the wire rods 3 customary in the condenser construction. Consequently, the stiffening and increase in surface area of the tubes 2 bent into parallel tube loops begins by the wire rods 3 only from the tube piece leading to the throttle 6.

The gaseous refrigerant is compressed by the compressor and thereby heated. Consequently, the gaseous refrigerant has its highest temperature immediately after the compressor. On its way through the condenser 1, the refrigerant cools and liquefies before the throttle. 6 The arranged below the condenser 1 evaporation tray 4 should evaporate in the shortest possible time from the cooled interior condensate. To support this, expediently, the evaporator shell 4 is connected to the compressor by pulling a tube piece 8 filled with the hot refrigerant over the bottom 9 of the evaporator shell 4. So that the pipe section 8 remains permanently in the region of the bottom 9 of the evaporator shell 4, it is secured in the vertical direction by means of a pipe clamp 5, which latches with the evaporator shell 4.

FIG. 2 shows, as a detailed drawing, the pipe clip 5 latched into the evaporator shell 4 with the pipe section 8. The evaporator shell 4 consists inter alia of the bottom 9, an outer wall 10 with an edge 11 and a stiffening 12. The outer wall 10 rotates at right angles to the bottom 9 and is firmly attached to him. The part of the outer wall 10, which runs parallel to the condenser 1 (see FIG. 1) and is closest to it, has an outwardly bent edge 11. The stiffener 12 also rotates at right angles to the underside of the evaporator shell 4 and is slightly offset from the outer wall 10 inwards.

The pipe clip 5 is U-shaped. A leg 13, which protrudes in the assembled state in the evaporator shell 4 to the bottom 9, has a kink in the lower part 14. The kink 14 points in the direction of the opposite leg 15. Fixed to the leg 13 is a web 16 is connected. In this case, the outer knee of the double bend 17 touches the inside of the outer wall 10 in the assembled state. The lower part of the double bend 17 points in the direction of the leg 13 lower part of the leg 13, the web 16 and the double bend 17 a downwardly open channel 18, in which the pipe section 8 is guided. The height of the channel 18 corresponds at least to the diameter of the pipe section 8 plus the maximum height of a hook portion 19. The kink 14 and the lower part of the double kink 17 ensure an elastic termination of the channel to the bottom 9 out. In extension of the double kink 17 upwards sits perpendicular and flush to the web 16, an L-shaped extension 20. The short leg of the extension 20 faces toward the inside of the outer wall 10 and has in the assembled state in contact with her. With the legs 15, a hook 21 is firmly connected. On the hook 21 is a hook portion 19 with a hook extension 22 and a bevel 23. The hook 21 continues the leg 15 with a sharp-edged obtuse angle. The hook 21 is chamfered over its entire length on the top. The slope 23 is wider than that

Hook portion 19 and thereby forms on its trailing side a hook extension 21. The slope 23 extends so that in the assembled state, the higher part of the hook portion 19 to the inside of the stiffener 12 looks.

The pipe clip 5 is guided over the outer wall 10, that the leg 13 with its double bend 17 and its extension 20 inside and the legs 15 with its hook 21 outside the evaporation tray 4 are. Now the pipe clip 5 is further pushed vertically downwards towards the bottom 9 of the evaporation tray 4 until the kink 14 touches the bottom 9.

Particularly advantageous here is the development of the hook extension 22, since thereby the pressing of the hook portion 19 takes place on the outside of the outer wall 10 and later on the outside of the stiffening 12 only in a line of contact. Without the hook extension, the contact would be planar and the assembly would require considerably more effort.

In the insertion position reached by the pushing down the hook extension 22 touches the outside of the stiffener 12 and the legs 15 is supported on the edge 1 1 of the outer wall 10 from. Furthermore, the knee of the double kink 17 and the short leg of the L-shaped projection 20 bear against the inside of the outer wall 10 and exert a force in the horizontal direction on the hook extension 22 in connection with the outside of the stiffener 12 on the hook 21.

Now the pipe clamp 5 is pressurized again from above in the vertical direction. As a result, the kink 14 and the lower part of the double kink 17 fold inwardly into the channel 18 and the hook member 19 migrates along its hook extension 22 along the outside of the stiffener 12 until the hook 21 due to its compressive stress, which were applied by the double bend 17 and the extension 20, relaxes and the hook part 19th on the inside of the stiffener 12 umspringt. The slope 23 supports this process in an advantageous manner. A decrease in the force exerted on the pipe clamp 5 pressure leads to a concern of the inside of the hook portion 19 on the inside of the stiffener 12 and thus to a positive connection. The kink 14 with web 16 and double bend 17 forms in this position the pipe clip 5 in conjunction with the bottom 9 a closed channel 18 which surrounds the pipe section 8. Thus, the pipe clamp 5 fulfills its task to fix the pipe section 8 in the vicinity of the bottom 9 of the evaporation tray 4.

So that the pipe clip 5 has suspension properties, an elastic material is necessary.

The material must be stable to corrosion and temperature stability in relation to the heated condensation water.

The pipe clip 5 can be manufactured either as a one-piece injection molded part or as a section of an extruded profile. In this case, the injection molded part differs from the extrusion part by a centrally molded reinforcing rib 24.

Particularly advantageous is the execution in polypropylene, which satisfies in an outstanding way these previously described claims. LIST OF REFERENCE NUMBERS

1 condenser

2 pipe

3 wire rod

4 evaporation tray

5 pipe clamp

6 throttle

7 pipe bend

8 pipe piece

9 floor

10 outer wall

1 1 edge

12 stiffening

13 thighs

14 kink

15 thighs

16 footbridge

17 double kink

18 channel

19 hook part

20 extension

21 hooks

22 hook extension Oblique reinforcing rib

Claims

claims

1 . Refrigerating appliance with an interior, which is cooled by an evaporator, with a tube condenser (1) on the outside of the refrigerator and an evaporation tray (4), is introduced into the condensed water from the cooled interior, characterized in that a pipe section (8 ) of the tube condenser (1) through the evaporation tray (4) and held there by a clamp (5), wherein the clip (5) has a downwardly open

Channel (18) which forms with the bottom (9) of the evaporation tray (4) a closed channel (18) for a part of the pipe section (8).

2. Refrigerating appliance according to claim 1, characterized in that the clip (5) is U-shaped and is slipped over the outer wall (10) of the evaporation tray (4).

3. Refrigerating appliance according to claim 2, characterized in that on the leg (15) of the clip (5) which extends outside of the evaporation tray (4) along the outer wall (10), a hook (21) is provided which abuts the underside of the evaporation tray (4) is supported and presses the channel (18) with its open side on the bottom (9) of the evaporation tray (4).

4. Refrigerating appliance according to claim 3, characterized in that the hook (21) has on its free side a slope (23).

5. Refrigerating appliance according to claim 4, characterized in that the leg (15) of the clip (5) which extends outside of the evaporation tray (4) along the outer wall (10) has a kink.

6. Refrigerating appliance according to claim 5, characterized in that on the channel (18) has an extension (20) is provided, which on the inside of the outer wall (10) of the evaporation tray (4) is supported.

7. Refrigerating appliance according to claim 6, characterized in that the clip (5) is made of plastic.

8. Refrigerating appliance according to claim 7, characterized in that the clip (5) is made as an injection molded part.

9. Refrigerating appliance according to claim 7, characterized in that the clamp (5) is cut to length by an extrusion profile.