WO2018109975A1

WO2018109975A1 - Refrigerator

Info

Publication number: WO2018109975A1
Application number: PCT/JP2017/026792
Authority: WO
Inventors: 英夫上山; 雅秀守谷
Original assignee: 東芝ライフスタイル株式会社
Priority date: 2016-12-14
Filing date: 2017-07-25
Publication date: 2018-06-21
Also published as: JP7021849B2; CN110036250A; CN110036250B; JP2018096628A

Abstract

The present invention relates to a refrigerator that is equipped with a heat-radiating pipe extending along an inner surface of an outer box and that effectively suppresses traces of the pipe from appearing on a surface of a top plate of the outer box. Provided is a refrigerator equipped with a heat-radiating pipe that is fixed with adhesive tape along an inner surface of an outer box inside a heat insulating box. The heat-radiating pipe is disposed so as to extend from an inner surface of one side plate to an inner surface of another side plate via an inner surface of a top plate. The heat-radiating pipe has a vertically extending part that extends in a front-back direction and a horizontally extending part that extends horizontally along the inner surface of the top plate. The horizontally extending part is disposed so as to extend along a rear surface side of the top plate. The adhesive tape includes a part that fixes the vertically extending part and a part that fixes the horizontally extending part, the part that fixes the horizontally bridging part is affixed so as to extend across the whole of the top plate in the horizontal direction, and an end of the part that fixes the vertically extending part is affixed so as to link to the part that fixes the horizontally extending part.

Description

refrigerator

Embodiment of this invention is related with a refrigerator.

Generally, in a domestic refrigerator, for example, a heat insulating box body configured to accommodate a heat insulating material such as urethane foam is provided between a steel outer box and a plastic inner box. In addition, a part of the refrigerant pipe on the high temperature side of the refrigerant flow path of the refrigeration cycle is arranged as a heat radiating pipe on the inner surface of the outer box so as to be along the ceiling surface from the side surface of the heat insulating box body. (For example, refer to Patent Document 1). In this case, the heat radiating pipe is fixed to the inner surface of the outer box, for example, by applying an aluminum tape.

JP 2016-8733 A

Refrigeration pipes arranged on the inner surface of the outer box of the refrigerator have a problem that a so-called pipe mark is generated on the surface side of the outer box as the outer box becomes thinner. This pipe mark is caused by the surface of the outer box where the heat-dissipating pipe is arranged being slightly deformed (depressed or raised), and the hue of the other part changes (to a dull color). ) You can see. In particular, in a small refrigerator, the ceiling surface comes to a relatively low position, so that the pipe marks on the ceiling surface are easily seen by humans. Furthermore, when the ceiling surface is painted in a blackish color, pipe marks become conspicuous due to light exposure, and there is a possibility that the aesthetic appearance may be impaired.

Therefore, an object of the present invention is to provide a refrigerator that has a heat radiating pipe along the inner surface of the outer box and can effectively suppress the appearance of pipe marks on the top plate surface of the outer box.

The refrigerator of the embodiment includes a heat insulating box configured by arranging a heat insulating material between the outer box including the left and right side plates and the top plate and the inner box, and on the inner surface of the outer box in the heat insulating box. A heat dissipating pipe fixed by an adhesive tape along the heat dissipating pipe, the heat dissipating pipe being arranged from the inner surface of one of the side plates to the inner surface of the other side plate through the inner surface of the top plate, The inner surface of the top plate has a longitudinally extending portion extending in the front-rear direction and a laterally extending portion extending in the lateral direction, and the laterally extending portion is disposed so as to extend along the back side of the top plate, The adhesive tape includes a portion for fixing the longitudinally extending portion and a portion for fixing the laterally extending portion, and is attached so that the portion for fixing the laterally extending portion extends over the entire lateral direction of the top plate. And an end portion of the portion fixing the longitudinally extending portion is Is affixed so as to be connected with the portion for fixing the transverse pass portion.

This makes it possible to obtain a refrigerator that is provided with a heat radiating pipe along the inner surface of the outer box and that can effectively suppress the appearance of pipe marks on the top surface of the outer box.

The perspective view of the refrigerator which shows 1st Embodiment. The perspective view from the back side of a refrigerator. The perspective view from the back side which shows the arrangement | positioning state of the heat radiating pipe with respect to the side plate and top plate of a heat insulation box. The top view which reverses and shows a top plate back and forth. FIG. 5 is a longitudinal side view of the rear portion of the top board taken along line VV in FIG. 4. FIG. 6 is a longitudinal front view taken along line VI-VI in FIG. 4. The top view which shows 2nd Embodiment and reversely shows the top plate back and forth. The perspective view from the back side which shows 3rd Embodiment and shows the corner part of a thermal radiation pipe.

(1) First embodiment
Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 6. First, with reference to FIG.1 and FIG.2, the whole structure of the refrigerator which concerns on this embodiment is described easily. 1 and 2 show the appearance of the refrigerator main body 1, and the refrigerator main body 1 is divided into a plurality of parts by dividing the inside of a vertically long rectangular box-shaped heat insulating box 2 whose front surface is opened by a heat insulating partition wall. It is configured with a storage room. Specifically, the inside of the heat insulation box 2 is divided into two upper and lower chambers, and the upper stage is the freezer compartment 3 and the lower stage is the refrigerator compartment 4. In addition, hinged

doors

5 and 6 for opening and closing the freezer compartment 3 and the refrigerator compartment 4 are provided on the front surface of the refrigerator body 1.

On the other hand, as shown in FIG. 2, a machine room 7 is provided on the bottom rear side of the refrigerator body 1. Although not shown in detail, the refrigerator body 1 incorporates a refrigeration cycle having a well-known configuration. The refrigeration cycle is configured by connecting a compressor 8 (see FIG. 2), a condenser, a throttling device, an evaporator, and the like in a closed loop with a refrigerant pipe. At this time, as shown in FIG. 3, among the refrigerant pipes constituting the refrigeration cycle, a relatively high temperature portion in the downstream portion of the condenser is, for example, meandering along the inner surface of the outer box of the heat insulating box 2 described later. The heat radiation pipe 10 functions as a heat radiating pipe 10.

Next, the heat insulation box 2 and the heat radiating pipe 10 will be described with reference to FIGS. As is well known, the heat insulating box 2 is formed by joining a steel plate outer box 11 and a plastic inner box and filling the space formed by, for example, urethane foam as a heat insulating material. Yes. As shown in FIGS. 1 and 2, the outer box 11 specifically includes left and

right side plates

12 and 13, a top plate 14, and a back plate 15. At this time, the left and

right side plates

12, 13 and the top plate 14 are formed by bending a single vertically long steel plate into a downward U-shape.

Moreover, as shown in FIG. 5, the folding | returning part 14a folded back so that it may reciprocate in a U shape is formed in the rear side part of the inner surface (back surface) side used as the lower surface of the top plate 14. As shown in FIG. . The back plate 15 has a rectangular plate shape in which the portions excluding the upper side portion and the left and right side portions bulge a little to the rear, and is provided so as to close the back surface of the heat insulating box 2. At this time, as shown in FIG. 5, a flange portion 15 a that protrudes forward is integrally provided on the upper side portion of the back plate 15, and the flange portion 15 a of the back plate 15 is folded back of the top plate 14. It is inserted into the portion 14a and fixed.

And the heat radiating pipe 10 is arrange | positioned along the inner surface (back surface) of the left-and-

right side plates

12 and 13 and the top plate 14 among the outer boxes 11, as shown in the rear view of FIG. That is, if it demonstrates along the flow direction (arrow A direction) of a refrigerant | coolant, the heat radiating pipe 10 which came out from the left part in the machine room 7 seeing the heat insulation box 2 from the front side will be shown in the inner surface of the left side plate 12 first. The side plate 12 extends so as to rise near the rear side. Next, it is folded back (in a U-turn) near the upper end portion of the side plate 12 and extends downward, and is folded back upward near the lower end of the side plate 12 again. The side portion extends upward.
The heat radiating pipe 10 collides with the top plate 14 at the upper end portion of the side plate 12, bends rightward at a right angle at the corner portion, and extends along the inner surface of the top plate 14 as described later. The heat radiating pipe 10 reaches a portion near the front side of the upper end portion of the right side plate 13, bends downward at a right angle at the corner portion, and extends the right side plate 13 downward. Next, the heat radiating pipe 10 is folded back upward near the lower end portion of the side plate 13 and extends upward, and is folded back downward again near the upper end of the side plate 13, and the rear side portion of the side plate 13. The side portion extends downward and returns to the machine room 7.

In the present embodiment, the heat radiating pipe 10 is arranged on the inner surface of the top plate 14 as follows. That is, as shown in FIGS. 3 and 4, the heat radiating pipe 10 extends slightly from the corner portion at the upper end of the left side plate 12 to the right (left in FIG. 4), and then bends at a right angle. In this way, it extends rearward (front side in FIG. 4). The heat radiating pipe 10 bends rightward on the back side of the top plate 14 (before the folded portion 14a in FIG. 5) and extends laterally on the back side. Furthermore, it extends so as to be bilaterally symmetric so as to be bent at a right angle toward the front, and then extends to the right so as to be bent at a right angle to reach the corner portion at the upper end of the right side plate 13.

In this case, on the inner surface of the top plate 14 of the heat radiating pipe 10, the two left and right portions extending in the front-rear direction are referred to as longitudinally extending

portions

10 a and 10 b, respectively. In addition, the portion of the heat radiating pipe 10 that extends in the lateral direction on the back side of the top plate 14 is referred to as a transverse portion 10c. The heat radiating pipe 10 is disposed on the inner surface of the top plate 14 so as to have a U-shape that opens forward. In the present embodiment, the two vertically extending

portions

10a and 10b and the crossing portion 10c therebetween are arranged so as to form a U-shape that opens forward.

Further, as shown in FIGS. 4 to 6, on the inner surface of the top plate 14, the two longitudinally extending

portions

10a and 10b and the laterally extending portion 10c of the heat radiating pipe 10 are fixed with adhesive tape, for example, aluminum tapes 16 to 18. It has come to be. The aluminum tapes 16 to 18 are arranged so that the heat radiating pipe 10 is arranged at substantially the middle part in the width direction, and both side parts in the width direction are bonded to the inner surface of the top plate 14, that is, the longitudinal direction of the aluminum tapes 16 to Affixing is performed so that the direction in which the heat radiating pipe 10 extends coincides.

As shown in FIGS. 4 and 6, the left and right longitudinally extending

portions

10a and 10b of the heat radiating pipe 10 are fixed by the

aluminum tapes

16 and 17 extending in the front-rear direction and attached. In addition, as shown in part in FIG. 5, the transverse portion 10 c of the heat radiating pipe 10 is fixed by the aluminum tape 18, and the aluminum tape 18 extends across the entire lateral direction on the back side of the top plate 14. It is stuck so that it may extend (FIG. 4). At this time, the rear ends of the

aluminum tapes

16 and 17 and the aluminum tape 18 are connected. That is, when the

aluminum tapes

16 and 17 are affixed as viewed from the back side, the aluminum tape 18 is affixed so as to partially overlap the rear ends of the

aluminum tapes

16 and 17.

As will be described in the following description of the operation, when the

longitudinally extending portions

10a and 10b of the heat radiating pipe 10 are fixed to the inner surface of the top plate 14 with the

aluminum tapes

16 and 17, as shown in FIG. And a gap S1 is formed between the longitudinally extending

portions

10a and 10b. Further, when the transverse portion 10c of the heat radiating pipe 10 is fixed by the aluminum tape 18, a gap S2 is formed between the aluminum tape 18 and the transverse portion 10c, as shown in FIG. Here, when the end portions of the

aluminum tapes

16 and 17 and the aluminum tape 18 are connected, the gap S1 and the gap S2 are connected. Further, since the aluminum tape 18 is provided over the entire horizontal direction of the top plate 14, the gap S <b> 2 is a gap between the left and

right side plates

12 and 13 and the back plate 15 at both sides of the top plate 14. It is open to the open air.

Next, the operation and effect of the above configuration will be described. In the heat insulating box 2 in which the heat radiating pipe 10 is arranged on the inner surface of the outer box 11 as in the present embodiment, a so-called pipe mark is generated on the surface side of the outer box 11 as the outer box 11 becomes thinner. There is. This pipe mark is caused by the surface of the outer casing 11 where the heat radiating pipe 10 is disposed is slightly deformed (depressed or raised), and the color of the other part changes (smooth). (Color). In particular, in the case of the relatively small refrigerator main body 1, the outer surface (surface) of the top plate 14 comes to a relatively low position, so that the pipe marks generated on the top plate 14 are easily seen by humans.

However, in this embodiment, the occurrence of pipe marks on the top plate 14 can be suppressed as follows. That is, first, the heat radiating pipe 10 includes longitudinally extending

portions

10a and 10b extending in the front-rear direction and a transverse portion 10c extending in the lateral direction on the inner surface of the top plate 14. At this time, the crossing part 10c is arrange | positioned so that it may extend along the back side among the top boards 14. FIG. Here, since the back side (rear side portion) of the top plate 14 has the folded-back portion 14a, the strength (rigidity) is higher than the central portion of the top plate 14 or the like. Therefore, in the transverse portion 10c, the deformation of the outer box 11 that becomes a pipe mark is less likely to occur.

Next, as one of the causes of pipe scars, when the heat radiating pipe 10 is fixed to the inner surface of the top plate 14 with the aluminum tapes 16 to 18, there is a gap S1 between the aluminum tapes 16 to 18 and the heat radiating pipe 10. , S2 is formed, and the air accumulated in the gaps S1 and S2 expands with the shrinkage of urethane after urethane foaming, and the pressure in the gap portion decreases, so that the outer box 11 along the heat radiating pipe 10 It is conceivable that the material is deformed so as to be recessed although it is minute.

On the other hand, in the present embodiment, the end portions of the

aluminum tapes

16 and 17 that fix the

longitudinally extending portions

10a and 10b are connected to the aluminum tape 18 portion that fixes the transverse portion 10c, and the aluminum tape 18 It extends over the entire horizontal direction of the top plate 14. As a result, the entire gaps S 1 and S 2 formed between the aluminum tapes 16 to 18 and the heat radiating pipe 10 are connected, and the gap S 2 is opened at the end of the aluminum tape 18. Therefore, air can enter and exit from the open portion of the gap S2, and the pressure fluctuations in the gaps S1 and S2 can be absorbed. Therefore, it is possible to suppress the occurrence of pipe marks in the vertically extending

portions

10a and 10b.

As a result, according to the present embodiment, the heat radiation pipe 10 is provided along the inner surface of the outer box 11, and the occurrence of pipe marks on the surface of the top plate 14 of the outer box 11 is effectively suppressed. As a result, an excellent effect that the appearance of the outer box 11 can be improved can be obtained.

Further, particularly in the present embodiment, the

longitudinally extending portions

10a and 10b and the transverse portion 10c of the heat radiating pipe 10 are arranged on the inner surface of the top plate 14 so as to form a U-shape that opens forward. Thus, when the heat radiating pipe 10 has a U shape, the

longitudinally extending portions

10a and 10b on both sides are easily deformed in the direction of opening or narrowing, and the deformation can absorb a bending dimension error of the heat radiating pipe 10. . Moreover, since the crossing part 10c arrange | positioned in the back side among the top plates 14 can be ensured long, it becomes effective in suppression of generation | occurrence | production of a pipe trace by that much.

(2) Second and third embodiments and other embodiments
FIG. 7 shows the second embodiment. The difference from the first embodiment is the arrangement of the heat radiating pipes 21 on the inner surface of the top plate 14. That is, the heat radiating pipe 21 extends slightly from the corner portion at the upper end of the left side plate 12 to the right (left side in FIG. 7) and then bends at a right angle to the rear (front side in FIG. 7). ) Extending in the vertical direction 21). Moreover, it has the crossing part 21c which continues from the longitudinally extending part 21a, bend | folds rightward on the back side (front side of the folding | turning part 14a) of the top plate 14, and extends a back side laterally. The right end of the crossing portion 21c is connected to a longitudinally extending portion 21b extending forward, and then the heat radiating pipe 21 extends to the right and reaches the corner portion at the upper end of the right side plate 13.

In the present embodiment, there is an elongated folded portion 21d arranged so as to extend forward from the middle of the transverse portion 21c and then turn back toward the rear, and then return to the transverse portion 21c. On the inner surface of the top plate 14, the two vertically extending

portions

21a and 21b are fixed by the

aluminum tapes

16 and 17, respectively, and the laterally extending portion 21c is fixed by the aluminum tape 18 extending in the entire lateral direction. Is done. The entire folded portion 21d is fixed by an aluminum tape 22 which is a single adhesive tape. At this time, the end of the aluminum tape 22 is also provided so as to be connected to the aluminum tape 18 (a gap is continuous).

According to the second embodiment, similarly to the first embodiment, the crossing portion 21c of the heat radiating pipe 21 is arranged on the back side of the top plate 14 with high strength, and the aluminum tapes 16-18, 22 It is possible to effectively suppress the appearance of pipe marks on the surface of the top plate 14 by the gaps formed by being continuous and opened. In addition, since the folded portion 21d is provided in the heat radiating pipe 21, the heat radiating pipe 21 can be arranged longer to increase the heat radiating effect. Of course, by providing the aluminum tape 22 so as to be connected to the aluminum tape 18, the occurrence of pipe marks in the folded portion 21 d can be suppressed.

FIG. 8 shows a third embodiment. The third embodiment is different from the first embodiment in that the corners formed by the side plates 12 and 13 (only the side plate 12 is shown) and the top plate 14 of the heat radiating pipe 10 are folded at a substantially right angle. A soft tape 31 serving as a buffer member is disposed between the heat radiating pipe 10 and the inner surface of the outer box 11 at a corner portion that is bent and disposed. In this case, the soft tape 31 is affixed beforehand to the outer peripheral part of the corner part of the heat radiating pipe 10, for example.

According to the third embodiment, the soft tape 31 can protect the corner portion of the heat radiating pipe 10 itself or the outer box 11 in contact with the corner portion of the heat radiating pipe 10. It is also possible to suppress the occurrence of pipe marks due to direct contact (with a relatively large force). As a result, it becomes more effective by suppressing the occurrence of pipe marks. However, since the heat dissipation of the portion provided with the soft tape 31 is lowered, it is desirable that the soft tape 31 is not made larger than necessary.

In addition, it is not limited to each above-mentioned embodiment, About the whole structure of the refrigerator main body 1, the structure of the heat insulation box 2, such as the number and arrangement | positioning of each storage room, arrangement | positioning of the heat radiating pipe in a side plate, etc. deviate from a summary. Various modifications can be made within the range not to be performed. The configuration of the pressure-sensitive adhesive tape (aluminum tape) can also be a shape that has a portion that fixes the longitudinally extending portion of the heat radiating pipe and a portion that fixes the transverse portion in advance.

The several embodiments described above are presented as examples, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body 2 ...

Heat insulation box

10, 21 ...

Radiation pipe

10a, 10b, 21a, 21b ...

Longitudinal extension part

10c, 21c ... Crossing part 11 ...

Outer box

12, 13 ... Side plate 14 ... Top plate 14a ... Folding

part

16, 17, 18, 22 ... Aluminum tape (adhesive tape)
21d ... folded portion 31 ... soft tape (buffer member)

Claims

A heat insulating box is formed by arranging a heat insulating material between the outer box including the left and right side plates and the top plate and the inner box, and is fixed by an adhesive tape along the inner surface of the outer box in the heat insulating box. A heat dissipating pipe, wherein the heat dissipating pipe is disposed so as to extend from the inner surface of one of the side plates to the inner surface of the other side plate through the inner surface of the top plate. And a longitudinally extending portion extending in the front-rear direction and a laterally extending portion extending in the lateral direction, and the laterally extending portion is disposed so as to extend along the back side of the top plate, A portion for fixing the longitudinally extending portion; and a portion for fixing the laterally extending portion, wherein the portion for fixing the laterally extending portion is pasted so as to extend over the entire lateral direction of the top plate, and the longitudinally extending portion The end of the portion that secures the crossing portion Refrigerator affixed so as to be connected with the fixed part.
The refrigerator according to claim 1, wherein the heat radiating pipe is disposed on the inner surface of the top plate so as to form a U-shape that opens forward.
The heat-dissipating pipe has an elongated folded portion disposed on the inner surface of the top plate so as to extend forward from the middle of the transverse portion and then turn back toward the rear and return to the transverse portion, The refrigerator according to claim 1 or 2, wherein the entire folded portion is fixed with one adhesive tape so as to be connected to a portion for fixing the transverse portion.
The buffer member is arrange | positioned between this heat radiating pipe and the said outer case inner surface in the corner part bent and arrange | positioned at the corner | angular part which the said side plate and a top plate make among the said heat radiating pipes. Or the refrigerator of 2.
The buffer member is arrange | positioned between this heat radiating pipe and the said outer case inner surface in the corner part bent and arrange | positioned at the corner | angular part which the said side plate and top plate make among the said heat radiating pipes. Refrigerator.