DE102010040075A1 - Refrigerating appliance and method for producing the same - Google Patents

Abstract

A refrigeration device comprises a refrigerated goods container (110) with a wall (120), and a tube evaporator (200) arranged in the refrigerated goods container (110) along this wall (120). The tube evaporator (200) is fastened to the wall (120) of the refrigerated goods container (110) by means of a latching device (400, 500).

Description

The present invention relates to a refrigeration device with a refrigerated goods container, and to a method for producing a refrigeration device.

In refrigerators, a refrigerant is typically conducted in a closed circuit. In this case, the refrigerant is first compressed by a compressor, condensed in a first heat exchanger with heat dissipation, expanded with a throttle and evaporated in a second heat exchanger at low temperature while absorbing heat. As a second heat exchanger tube evaporator are known which can be arranged in a refrigerated goods. During operation, the tube evaporator receives heat through the refrigerated goods container, which thus leads to cooling of the space inside the refrigerated goods container.

Pipe evaporators are often formed as a coil, which meanders over a certain area to achieve favorable heat exchange conditions.

It is an object of the present invention to provide a refrigeration device, the tube evaporator can be attached to the refrigerated goods container of the refrigerator in a flexible manner.

A refrigeration appliance is understood in particular to be a household refrigeration appliance, that is to say a refrigeration appliance used for household purposes or possibly even in the gastronomy sector, and in particular for storing food and / or beverages in household quantities at specific temperatures, such as, for example, a refrigerator, a freezer or a fridge freezer combination.

The object is achieved by a refrigeration device according to claim 1. A refrigerator is provided which has a refrigerated goods container with a wall, and a tube evaporator arranged in the refrigerated goods container, in particular along this wall, wherein the tube evaporator is fastened to the wall of the refrigerated goods container by means of a latching device.

Thus, it can be ensured that the tube evaporator can be easily attached to the refrigerated goods container. Due to the latching connection, the tube evaporator can be detachably fastened to the refrigerated goods container.

The locking device may have at least one clip which is mounted on the wall of the refrigerated goods container or connected thereto. The clip can be designed to hold the tube evaporator by means of a first latching connection. This allows the storage of the tube evaporator by means of a simple assembly step.

Further, the latching device may comprise a spacer, which is adapted to keep the tube evaporator spaced a predetermined distance from the wall, and the clip may be configured to hold the spacer by means of a second latching connection. By means of such a two-part latching device, the tube evaporator can be fastened at different distances from the wall of the refrigerated goods container. The spacer can hold the tube evaporator at a suitable distance from the wall of the refrigerated goods container, so that a favorable for the temperature regulation in Kühlgutbehälter air circulation is achieved. Furthermore, such an embodiment of the clip allows a manufacturing method in which in a first step, the evaporator tube is clipped in a simple manner with the clip on the wall, is released after the foaming of the wall, and finally the spacer attached to the clip on the wall becomes.

The spacer can be designed in particular as a bar, which allows easy installation of the tube evaporator in Kühlgutbehälter.

The clip may, for example, have a base plate mounted on the wall of the refrigerated goods container and two legs projecting from the base plate. This allows a simple design of the clip.

It can be provided on the inside of the legs locking lugs, which are designed to hold the tube evaporator detent. Further, locking lugs may be provided on the outer side of the legs, which are designed to hold the spacer detent. Thus, the legs can fulfill the double function, on the one hand to keep the tube evaporator and on the other hand serving as a spacer bar latching.

The base plate can be arranged in a depression on an outer side of the wall of the refrigerated goods container and the legs can be guided through an opening in the wall of the refrigerated goods container. Thus, an attachment of the clip on refrigerated goods is possible with little effort.

The wall may for example be a ceiling wall of the refrigerated goods. Thus, an advantageous temperature distribution in the refrigerated goods can be achieved, which leads to a reduction in the standard energy consumption of the refrigerator.

The latching device can be arranged in the front region of the refrigerated goods container. If the tube evaporator is guided through the rear wall of the refrigerated goods and is stored at this implementation, thus securing the tube evaporator is achieved with a few fasteners.

According to one aspect, a method for producing a refrigeration device, which has a refrigerated goods container with a wall, and a tube evaporator arranged in the refrigerated goods container along this wall, comprises the following step: attaching the tube evaporator to the wall of the refrigerated goods container by means of a latching device. By this method, the advantages described above can be achieved.

• – Anlegen des Rohrverdampfers an einer Wandung des Kühlgutbehälters und Befestigen des Rohrverdampfers mittels des Clips;
• – Umschäumen des Kühlgutbehälters mit einem wärmeisolierenden Material;
• – nach dem Umschäumen, Lösen des Rohrverdampfers von dem Clip;
• – Befestigen des zweiten Rohrverdampfers an dem Abstandshalter; und
• – Befestigen des Abstandshalters an dem Clip.

In this method, the locking device may comprise at least one clip and a spacer. Furthermore, the method can have the following steps:

• - applying the tube evaporator on a wall of the refrigerated goods and attaching the tube evaporator by means of the clip;
• - Foaming the refrigerated goods container with a heat-insulating material;
• - After foaming, loosen the tube evaporator from the clip;
• - attaching the second tube evaporator to the spacer; and
• - Attaching the spacer to the clip.

Thus, the tube evaporator before and after foaming with the same holding means, namely the clip, held or fixed.

The tube evaporator can bear tightly against the wall during foaming, which can be, in particular, a top wall of the refrigerated goods container.

Since the tube evaporator rests tightly against the wall of the refrigerated goods container during foaming, the tube evaporator can absorb the foaming pressure acting through the wall so that deformation of the wall can be prevented.

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

1 a perspective view of a refrigerated goods container of a refrigeration device,

2 a perspective view of a tube evaporator,

3 a perspective sectional view through a refrigerator,

4a a perspective view of a bar,

4b a top view of the strip,

4c a left side view of the bar,

4d a right side view of the bar,

4e a front view of the bar,

4f a sectional view through the section line AA in 4b ,

4g a sectional view through the section line BB in 4b ,

4h a sectional view through the section line CC in 4b ,

5a a first perspective view of a clip for attaching the bar,

5b a second perspective view of the clip,

5c a side view of the clip,

5d a front view of the clip,

5e a first sectional view of the clip through the section line AA in 5c .

5f a second sectional view of the clip through the section line BB in 5d .

6 a perspective view of the refrigerated goods container viewed from the rear,

7 a perspective view of securing the clips with adhesive tapes,

8th a perspective view of the ceiling portion of the refrigerated goods,

9 a sectional perspective view through the refrigerator, and

10 another perspective sectional view through the refrigerator.

Unless otherwise indicated, like reference numerals in the figures denote like or functionally identical elements.

1 shows a perspective view of a with a tube evaporator 130 wrapped refrigerated goods container 110 a refrigeration device 100 , The refrigerated goods container 110 has essentially the shape of an open towards the front and back cut square with a ceiling wall 120 , Floor walls 122 and 124 , left and right side walls 126 and 128 and a stepped rear wall, which has an interior 160 define. The refrigerated goods container 110 can be made of plastic, for example. The open front of the refrigerated goods container 110 is from a frame 140 surround. In the side walls are each two recording latches 150 provided with which partitions can be added to the vertical division of the refrigerated goods.

The refrigerated goods container 110 is with a first tube evaporator 130 wrapped, which outside the refrigerated goods 110 is arranged. In operation, the first tube evaporator 130 charged with a refrigerant which evaporates by absorbing heat. It takes the first tube evaporator 130 through the refrigerated goods container 110 through heat, thus resulting in a cooling of the interior of the refrigerated goods 110 leads.

Inside the refrigerated goods container 110 and in the present example in the ceiling area, so close to the ceiling wall 120 , is a second tube evaporator 200 provided in the form of a storage rack, which in 2 is shown in perspective view. The second tube evaporator 200 includes an evaporator tube 210 and a variety of transverse ribs 220 , The evaporator tube 210 includes, for example, ten straight pipe sections 210a of which two each at their end by bent pipe sections 210b are connected, so that the evaporator tube 210 meandering in a plane. The transverse ribs 220 For example, are formed as straight pieces of wire and are on the two sides of the evaporator tube 210 arranged and z. B. by soldering or the like attached. The transverse ribs extend here 220 between the second and the penultimate straight pipe section 210a so that the distance between the two pipe ends 230 by compression or extension is easily changeable and the two pipe ends 230 slightly out of the cross ribs 220 can be unscrewed defined level. Through the transverse ribs 220 the pipe sections are held together so that the evaporator tube 210 provided with a certain rigidity. On the other hand, they improve the heat exchange properties of the evaporator tube 210 ,

The two outer straight pipe sections 210a are through the rear wall of the refrigerated goods container 110 guided. These two outer straight pipe sections 210a serve as supply and discharge of the tube evaporator 200 ,

Due to the provision of the second tube evaporator 200 becomes a more even temperature distribution within the refrigerated goods container 110 achieved, resulting in a reduced standard energy consumption of the refrigerator. In this case, the first tube evaporator 130 and the second tube evaporator 200 be connected in series with each other in terms of flow. Thus, both tube evaporator 130 . 200 operated over only one cooling circuit and there is no need to provide additional compressors, valves or the like for the additional evaporator. On the input side, the tube evaporator 130 . 200 to an unillustrated throttle valve and the output side to a compressor, for. B. a linear compressor, not shown, connected.

3 shows a perspective sectional view through a refrigerator 100 wherein the section is in a direction perpendicular to the first tube evaporator 130 runs. In this refrigerator 100 is the second tube evaporator 200 by means of a locking device in the front region of the refrigerated goods container 110 on the ceiling wall 120 attached. The locking device comprises a bar 400 , which serves as a spacer, as well as clips 500 ,

As in the 3 recognizable, is the second evaporator tube 210 in the bar 400 inserted, which in turn provided in the ceiling area provided clips 500 is plugged. The advantage of this arrangement is that the second evaporator tube 210 with a predetermined distance to the ceiling wall 120 is held. Thus, a better cooling circulation in the refrigerator 100 be ensured.

4a - 4h show different views of the bar 400 for fixing the second tube evaporator 200 , 4a shows a perspective view of the bar 400 , 4b shows a plan view of the bar 400 , 4c shows a left side view of the bar 400 , 4d shows a right side view of the bar 400 , 4e shows a front view of the bar 400 , 4f shows a sectional view through the section line AA in 4b , 4g shows a sectional view through the section line BB in 4b , 4h shows a sectional view through the section line CC in 4b ,

The bar 400 includes a last back wall 410 from which a bottom wall 420 and a middle wall 430 spaced apart from each other laterally. The last back wall 410 , the bottom wall 420 and the middle wall 430 define a recess in which the second evaporator tube 210 taken and with locking lugs 440 is fixed. Further, the bar 400 with two clips 450 provided spaced from each other along the last rear wall 410 are provided. These clip shots 450 have essentially the shape of an upwardly open cuboid, the rear wall of the last back wall 410 and its bottom from the middle wall 430 is formed. In the Make back wall 410 opposite arranged front wall 460 a through hole is arranged and above this through hole is a latching lug 470 arranged. Opposite of this latch 470 is on the back wall 410 another catch 470 arranged. By interaction of these locking lugs 470 with the thighs of the clip 500 can the bar 400 on the clips 500 be determined. At the upper end of the groin back wall 410 There is a slightly curved, flexible lip on the side 480 from. Is the bar 400 on the ceiling wall 120 attached, then hold this lip 480 the bar 400 under light tension on the ceiling wall 120 , Thus, tolerances are compensated and there is a possible rattling of the bar on the ceiling wall 120 prevented.

5a shows a first perspective view of a clip 500 for attaching the bar 400 , 5b shows a second perspective view of the clip 500 , 5c shows a side view of the clip 500 , 5d shows a front view of the clip 500 , 5e shows a first sectional view of the clip 500 through the section line AA in 5c , 5f shows a second sectional view of the clip 500 through the section line BB in 5d ,

The clip 500 has a substantially rectangular base plate 510 as well as two thighs 520 on which from one side of the base plate 510 stand out and bent slightly towards each other. The clips 500 each can be about 10 to 15 mm high, 35 to 45 mm long and 20 to 25 mm wide.

The thigh 520 are both on their inside and on their outside with locking lugs 530 and 540 Mistake. Specifically, the free ends of the legs form 520 locking lugs 530 extending over the entire width of the thighs 520 extend. The locking lugs 530 can when clipping the evaporator tube 210 to the clips 500 grab behind the evaporator tube and thus hold this latching or secure.

Two locking lugs each 540 are on the outside of each of the thighs 520 intended. These latches 540 grab while clipping the bar 400 to the clips 500 behind the locking lugs 470 at the bar 400 and thus can the bar 400 hold or fasten detent and on the ceiling wall 120 establish.

The clips 500 So are designed such that they on the one hand, the evaporator tube 210 and on the other hand the bar 400 to be able to hold. This is the evaporator tube 210 with the inside of the thighs 520 and the bar 400 with the outside of the thigh 520 held. By this configuration of the clips 500 an advantageous method for producing the refrigeration device can be realized, as shown in the 7 to 9 is illustrated.

In a first step of the manufacturing process, the clips become 500 from the outside of the refrigerated goods container 110 in impressions in the ceiling wall 120 of the refrigerated goods container 110 placed, with the legs of the clips 500 through through holes 610 in the ceiling wall 120 of the refrigerated goods container 110 be guided, after which the clips 500 for example, with adhesive tape 640 can be secured. It results in the 7 illustrated situation that the clips 500 free from the ceiling wall 120 in the interior 160 of the refrigerated goods container 110 protrude.

In the next step, the second tube evaporator 200 in the interior 160 of the refrigerated goods container 110 pushed, the pipe ends 230 of the second tube evaporator 200 are through through holes 630 in the back wall 620 of the refrigerated goods container 110 led, and the second tube evaporator 200 is at two of its curved pipe sections 210b with the clips 500 on the ceiling wall 120 festgeclipst. Next is the refrigerated goods container 110 with the first tube evaporator 130 wrapped. After that, the first tube evaporator 130 and the second tube evaporator 200 be joined by welding or the like. It should be noted that the first and the second tube evaporator 130 respectively. 200 can also be installed in reverse order.

The refrigerated goods container 110 is now pushed into an unspecified outer housing with a device outer wall and fixed it. Furthermore, in the interior 160 of the refrigerated goods container 110 a foaming core made of aluminum or the like is placed. This foaming core is used for stabilization and is dimensioned such that the underside of the second tube evaporator 200 rests on the top of the foaming core. These are the through the ribs 220 stiffened middle pipe sections 210a pushed up, and the upper end of the Schäumkerns is between the outermost straight pipe sections 210a arranged. In other words, in this state, the outermost straight pipe sections run 210a through a different plane than the middle pipe sections 210a , which are like in 9 shown below the ceiling wall 120 parallel to it. More specifically, the outer straight pipe sections extend 210a in this state of the two through holes in the rear wall obliquely on the arranged in the front region of the refrigerated goods container clips 500 to. Furthermore, the foaming core may be the back wall 620 and the side walls of the refrigerated goods container 110 supported from the inside.

Thus, it is also apparent why the transverse ribs 220 not over all straight pipe sections 210a extend. If this were the case, then the middle straight pipe sections could 210a not with the foam core against the ceiling wall 120 be pressed.

In the next step, the gap between the refrigerated goods 110 and the device outer wall filled with a heat-insulating material. Because the second tube evaporator 200 close to the ceiling wall 120 rests, he stabilizes on the one hand, the ceiling wall 120 and on the other hand gives the pressure resulting from the foaming on the ceiling wall 120 continue to the foam core, so that a deformation or denting of the ceiling wall 120 can be prevented. In the figures, neither the device outer wall nor the heat-insulating foam are shown for illustrative reasons.

After foaming, the second tube evaporator 200 from the clips 500 detached and slightly lowered at its front, as in 10 is shown. The straight pipe sections 210a are brought back into a plane. After that, the bar becomes 400 to the second tube evaporator 200 plugged. Finally, the bar 400 on the clips 500 clipped or fixed. It results in the 3 illustrated state. Thus, the second tube evaporator is located 200 no longer close to the ceiling wall 120 but is spaced from this, so that an advantageous cooling circulation within the refrigerated goods 110 results.

In this condition is the tube evaporator 200 forward over the bar 400 and the clips 500 are attached to the ceiling wall. When ready for use, the refrigerated goods can 110 surrounded on five sides by the device outer wall and can be closed to the front with a door.

With the method described above is the second tube evaporator 200 close to the ceiling during the foaming process 120 and stabilizes them, so that it can be prevented from being deformed due to the foam pressure and dented inwards. Furthermore, all soldering operations on the second tube evaporator 200 already be carried out by the foaming. In particular, the output-side end of the first tube evaporator 130 with the input side end of the second tube evaporator 200 be soldered and then tested for leaks before foaming. If, however, the second tube evaporator 200 used only after foaming, then an additional step to test the tightness is necessary.

As described above, the clips are 500 designed such that on the one hand the evaporator tube 210 can record and hold during the tube evaporator 200 on the ceiling wall 120 on the other hand, the bar 400 pick up and on the ceiling wall 120 can store. Thus, the manufacturing method described above can be easily performed because, in a first step, the evaporator tube 210 in a simple way with the clips 500 on the ceiling wall 120 can be clipped, after foaming from the ceiling wall 120 can be solved and finally serving as a spacer bar 400 with the clips 500 on the ceiling wall 120 can be attached.

Furthermore, the attachment of the tube evaporator 200 on the refrigerated goods container 110 be easily solved again by the bar 400 from the clips 500 is solved by the tube evaporator 200 is removed, resulting in easy disposal or recycling of the refrigerator 100 allows.

In the above example was a locking device with two clips 500 and a bar 400 described. However, the detent device can also only one or three or more clips 500 or several strips 400 include.

Also, the tube evaporator needs 200 not necessarily along the ceiling wall 120 be attached, but for example, on the back wall 620 of the refrigerated goods container 110 be provided.

LIST OF REFERENCE NUMBERS

100

The refrigerator

110

refrigerated goods

120

ceiling wall

122, 124

bottom walls

126, 128

side walls

130

first tube evaporator

140

frame

150

recording catches

160

inner space

500

clips

200

second tube evaporator

210

evaporator tube

210a

straight pipe sections

210b

curved pipe sections

220

transverse ribs

230

pipe ends

400

strip

410

rear wall

420

bottom wall

430

center wall

440

locking lugs

450

clips images

460

front wall

470

locking lugs

480

lip

500

clip

510

baseplate

520

leg

530

locking lugs

540

locking lugs

600

indentations

610

Through holes

620

rear wall

630

Through holes

640

duct tape

Claims (15)

Refrigerating appliance, comprising a refrigerated goods container ( 110 ) with a wall ( 120 ), and one in the refrigerated goods container ( 110 ) arranged tube evaporator ( 200 ), characterized in that the tube evaporator ( 200 ) by means of a locking device ( 400 . 500 ) on the wall ( 120 ) of the refrigerated goods container ( 110 ) is attached. Refrigerating appliance according to claim 1, characterized in that the latching device ( 400 . 500 ) at least one clip ( 500 ), which on the wall ( 120 ) of the refrigerated goods container ( 110 ) is stored or connected to this. Refrigerating appliance according to claim 2, characterized in that the clip ( 500 ), the tube evaporator ( 200 ) hold by means of a latching connection. Refrigerating appliance according to claim 2 or 3, characterized in that the latching device ( 400 . 500 ) a spacer ( 400 ), which is designed, the tube evaporator ( 200 ) at a predetermined distance from the wall ( 120 ) and the clip ( 500 ) is formed, the spacer ( 400 ) hold by means of a latching connection. Refrigerating appliance according to claim 4, characterized in that the spacer ( 400 ) is designed as a bar. Refrigerating appliance according to one of the preceding claims, characterized in that the latching device ( 400 . 500 ) one on the wall ( 120 ) of the refrigerated goods container ( 110 ) mounted base plate ( 510 ) and two of the base plate ( 510 ) projecting legs ( 520 ) having. Refrigerating appliance according to claim 6, characterized in that on the inside of the legs ( 520 ) Latching lugs ( 530 ) are provided, which are designed, the tube evaporator ( 200 ) to hold. Refrigerating appliance according to claim 6 or 7, characterized in that on the outside of the legs ( 520 ) Latching lugs ( 540 ) are provided, which are formed, the spacer ( 400 ) to hold. Refrigerating appliance according to one of claims 6 to 8, characterized in that the base plate ( 510 ) in a depression on an outer side of the wall ( 120 ) of the refrigerated goods container is arranged and the legs through an opening in the wall ( 120 ) of the refrigerated goods container ( 120 ) are guided. Refrigerating appliance according to one of the preceding claims, characterized in that the wall ( 120 ) a ceiling wall of the refrigerated goods container ( 110 ). Refrigerating appliance according to one of the preceding claims, characterized in that the latching device ( 400 . 500 ) in the front region of the refrigerated goods container ( 110 ) is arranged. Method for producing a refrigerator, comprising a refrigerated goods container ( 110 ) with a wall ( 120 ), and one in the refrigerated goods container ( 110 ) arranged tube evaporator ( 200 ), characterized by the following step: fixing the tube evaporator ( 200 ) by means of a locking device ( 400 . 500 ) on the wall ( 120 ) of the refrigerated goods container ( 110 ). A method according to claim 12, characterized in that the latching device ( 400 . 500 ) at least one clip ( 500 ) and a spacer ( 400 ), and the method comprises the following steps: - fixing the tube evaporator ( 200 ) by means of the clip ( 500 ) on the wall ( 120 ) of the refrigerated goods container ( 110 ), - Foaming the refrigerated goods container ( 110 ) with a heat-insulating material; After the foaming, loosening of the tube evaporator ( 200 ) of the clip ( 500 ); - fixing the tube evaporator ( 200 ) on the spacer ( 400 ); and - fixing the spacer ( 400 ) on the clip ( 500 ). A method according to claim 13, characterized in that the tube evaporator ( 200 ) close to the wall during foaming ( 120 ) is present. Method according to one of claims 12 to 14, characterized in that the wall is a top wall of the refrigerated goods container ( 110 ).

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