JP2020139732A - refrigerator - Google Patents

Abstract

To improve a storage configuration of members connecting components of a refrigerator.SOLUTION: A refrigerator includes: a heat insulation box constituted by providing a heat insulation panel between an external box and an internal box; members provided at corner parts of the heat insulation box in a condition of separating from the heat insulation panel and also in a condition of being insulated around, and connecting the components of the refrigerator; members covering the members provided at the corner parts of the heat-insulation box and connecting the components of the refrigerator; and a heat insulation material provided between the heat insulation panel and the members covering the members connecting the components of the refrigerator, and structured using material having heat insulation performance different from that of the members covering the members connecting the components of the refrigerator.SELECTED DRAWING: Figure 1

Description

Embodiments of the present invention relate to refrigerators.

Refrigerators are equipped with a plurality of members that connect the components of the refrigerator, such as a capillary tube that connects a condenser pipe and an evaporator (cooler) and a suction pipe that connects an evaporator and a compressor. There is. However, there is room for improvement in the method of accommodating such a member in the storage space.

Japanese Patent No. 2728318 Japanese Unexamined Patent Publication No. 6-147744

Therefore, a refrigerator having an improved accommodation structure for members connecting the components of the refrigerator is provided.

The refrigerator of the present embodiment has a heat insulating box body configured by providing a heat insulating panel between an outer box and an inner box, and the heat insulating box body in a state of being separated from the heat insulating panel and in a state of being insulated from the surroundings. A member provided at a corner and connecting between the components of the refrigerator, a member provided at the corner of the heat insulating box and covering the member connecting the components of the refrigerator, and a configuration of the heat insulating panel and the refrigerator. It includes a heat insulating material provided between the member covering the member connecting the elements and having a heat insulating property different from the member covering the member connecting the components of the refrigerator.

Partial cross-sectional view of the heat insulating box body showing the first embodiment Side view of the heat insulating rod Perspective view of the heat insulating box from the front side Perspective view of the heat insulating box from the rear side An exploded perspective view of the heat insulating box A vacuum insulation panel is shown, (a) is an exploded perspective view, and (b) is a sectional view. FIG. 1 corresponding diagram showing a second embodiment Partial longitudinal sectional view showing a third embodiment FIG. 4 equivalent diagram showing a fourth embodiment Fig. 1 equivalent

A plurality of embodiments will be described with reference to the drawings. The front, back, left, and right of the refrigerator will be described with the door side of the refrigerator as the "front side" and the right side when the refrigerator is viewed with respect to the door as the "right side".

(First Embodiment)
The first embodiment will be described with reference to FIGS. 1 to 6. 3 and 4 show a heat insulating box 1 constituting the refrigerator body. The heat insulating box 1 is configured by providing a vacuum heat insulating panel 4 described later as a heat insulating panel between the outer box 2 and the inner box 3, and as a whole, forms a rectangular parallelepiped vertically long box shape with an open front surface, and has an internal space. Is a storage space 5.

In the present embodiment, as shown in FIG. 5, the heat insulating box 1 has a peripheral wall, that is, a ceiling wall portion 1a, a bottom wall portion 1b, a left side wall portion 1c, a right side wall portion 1d, and a back wall portion 1e. It is manufactured separately and is configured by combining a plurality of (five in this embodiment) wall portions (insulation wall portions) 1a to 1e. In this case, the bottom wall portion 1b, the left side wall portion 1c, the right side wall portion 1d, and the back wall portion 1e excluding the ceiling wall portion 1a are rectangular flat plates, and only the ceiling wall portion 1a has a stepped rear portion. It has a shape. Due to the stepped shape of the ceiling wall portion 1a, when combined as the heat insulating box body 1, a machine room 6 for arranging a refrigeration cycle compressor or the like is formed in the upper rear portion of the heat insulating box body 1. ..

Here, the configuration of each of the wall portions 1a to 1e will be described. First, the heat insulating function of each wall portion 1a to 1e is obtained by the vacuum heat insulating panel 4. As shown in FIG. 6A, in the vacuum heat insulating panel 4, for example, glass wool, which is a cotton-like material of fine glass fibers, is formed into a mat shape to form a core material 7, and the core material 7 is made of an aluminum foil and a synthetic resin. The inside of the gas barrier container 8 is kept in a vacuum depressurized state by putting it in a gas barrier container 8 made of a laminated film and evacuating the inside to close the opening.

As shown in FIGS. 6A and 6B, each of the wall portions 1a to 1e has a vacuum heat insulating panel 4 between a metal outer shell 9 such as a steel plate and a plastic inner shell 10. The outer shell 9 and the vacuum heat insulating panel 4, and the vacuum heat insulating panel 4 and the inner shell 10 are fixed and integrated with each other by adhesion or the like. Although it is shown as a flat plate-shaped wall portion in FIG. 6, it goes without saying that the ceiling wall portion 1a has a stepped shape.

In each of the wall portions 1a to 1e, the inner shell 10 is formed to have a smaller vertical and horizontal dimension than the outer shell 9, and the vacuum heat insulating panel 4 is formed to have a smaller vertical and horizontal dimension than the inner shell 10. Therefore, both the vertical and horizontal ends of the vacuum insulation panel 4 do not reach the vertical and horizontal ends of the outer shell 9, and are located deeper inward than the vertical and horizontal ends of the outer shell 9. ing. Further, a connecting piece 11 is formed by bending at a right angle at a predetermined end of the outer shell 9 of the required wall portion among the wall portions 1a to 1e. The connecting piece 11 is for connecting the outer shells 9 of the wall portions adjacent to each other with screws or the like.

Then, by combining the wall portions 1a to 1e, the outer box 2 is formed by the outer shell 9 of each wall portion 1a to 1e, and the inner box 3 is formed by the inner shell 10, and these outer boxes 3 are formed. A heat insulating box 1 is formed by providing a vacuum heat insulating panel 4 which is a heat insulating panel having higher heat insulating performance (lower thermal conductivity) than urethane foam between the box 2 and the inner box 3.

FIG. 1 is a cross-sectional view of a ridge angle portion at the rear right side of the heat insulating box 1, showing a connecting portion between the right side wall portion 1d and the back wall portion 1e. Regarding the vacuum insulation panel 4, the outer shell 9, and the inner shell 10, in order to distinguish the one in the back wall portion 1e from the one in the right side wall portion 1d, "e" is added to the one in the back wall portion 1e. A letter is attached, and the one on the right wall portion 1d is indicated by a subscript of "d".

As shown in FIG. 1, the connecting piece 11 is provided at the rear end of the right side wall portion 1d, but the connecting piece is not provided at the right end of the outer shell 9e of the back wall portion 1e. The connecting piece 11 of the right side wall portion 1d is applied to the right end portion of the outer shell 9e of the back wall portion 1e from the inner surface side. Further, the right end of the inner shell 10e of the back wall portion 1e is abutted against the surface of the rear end portion of the inner shell 10d of the right side wall portion 1d. The connecting piece 11 of the right side wall portion 1c and the right end portion of the outer shell 9e of the back wall portion 1e are fastened with screws (not shown). Further, the right end of the inner shell 10e of the back wall portion 1e and the inner shell 10d of the right side wall portion 1d are sealed and connected by a sealing agent or a corner member having a triangular cross section.

As shown in FIG. 3, three horizontal frames 12 to 14 that partition the front surface in the vertical direction are attached to the front surface of the heat insulating box 1, and the middle horizontal frame 13 and the lower horizontal frame 14 A vertical frame 15 is attached between them. Although not shown, heat insulating walls or partition plates are provided on the rear side of the horizontal frames 12 to 14 and the rear side of the vertical frame 15, and the storage space 5 is sequentially arranged from the top by the heat insulating walls and the partition plates. It is partitioned into a refrigerating room 5a, a vegetable room 5b, an ice making room 5c arranged in the horizontal direction, a specification switching room 5d, and a freezing room 5e.

The refrigerator in the present embodiment is provided with two evaporators (coolers) for refrigeration and freezing, the evaporator for refrigeration is arranged in a cooling chamber formed in the inner part of the refrigerating chamber 5a, and the evaporator for freezing is It is arranged in a cooling chamber formed in the inner part of the freezing chamber 5e. Then, cold air cooled by two evaporators is blown into the refrigerating chamber 5a, the vegetable compartment 5b, the ice making chambers 5c arranged in the horizontal direction, the specification switching chamber 5d, and the freezing chamber 5e by a fan, and the refrigerating temperature or the freezing temperature It is configured to be cooled to.

The condenser pipe 16 that liquefies the refrigerant compressed by the compressor is provided on the inner surface (the surface on the vacuum insulation panel 4 side) of the outer shell 9 of all or part of the wall portions 1a to 1e of the heat insulation box body 1. It is attached and the outer shell 9 is used as a heat radiating plate to release heat of condensation. A part of the condenser pipe 16 is arranged as a dew-proof pipe 16a on the peripheral edge of the front opening of the heat insulating box 1, the horizontal frames 12 to 14 and the back side of the vertical frame 15, and the peripheral edge of the front opening of the heat insulating box 1. , The horizontal frames 12 to 14 and the vertical frame 15 are warmed to prevent dew from sticking.

The refrigerant condensed by the condenser pipe 16 is supplied to each of the refrigerating and freezing evaporators via the two capillary tubes 17 for refrigerating and freezing shown in FIG. 1, and the refrigerant evaporated by each evaporator is also shown in FIG. It is sucked into the compressor through the suction pipes 18 and 19 shown in 1. These capillary tubes 17 and suction pipes 18 and 19 are placed in the heat insulating box 1 outside the storage space 5, and in the present embodiment, inside the wall portions 1a to 1e of the heat insulating box 1, for example, the right side wall portion 1d and the back wall portion 1e. It is provided located inside the ridge angle portion on the right lateral rear side of the heat insulating box body 1 (inside the ridge angle portion of the heat insulating box body 1 where the ends of the right side wall portion 1d and the back wall portion 1e intersect). ing.

Speaking of the arrangement position of the capillary tube 17 and the suction pipes 18 and 19 in relation to the vacuum insulation panels 4d and 4e, the capillary tube 17 and the suction pipes 18 and 19 are behind the vacuum insulation panel 4d of the right wall portion 1d. On the extension (outside) of the end (end on the pipe arrangement side), inside the end of the outer box 2 (outer shell 9d of the right wall portion 1d), and the right end of the vacuum insulation panel 4e of the back wall portion 1e. It is arranged on the extension (outside) of (the end on the pipe arrangement side) and inside the end of the outer box 2 (the connecting piece 11 of the right side wall portion 1d).

The rear end of the vacuum insulation panel 4d of the right side wall portion 1d and the right end of the vacuum insulation panel 4e of the back wall portion 1e are the end of the right side wall portion 1d (the connecting piece 11 which is the rear end of the outer shell 9d) and the back wall, respectively. Since it does not reach the end of the part 1e (the right end of the outer shell 9e) and is inside the end, there is a space between the two vacuum insulation panels 4d and 4e, and the capillary tube 17 and the suction pipe are in that space. 18 and 19 can be arranged.

In this case, a rigid, for example, a square rod-shaped heat insulating member 20 made of foamable plastic is housed inside the ridge angle portion on the right lateral rear side of the heat insulating box 1, and the two suction pipes 18 and 19 are It is in a state of being inserted into the groove 20a formed in the rod-shaped heat insulating member 20 together with the capillary tube 17. Further, for example, a sponge-shaped heat insulating material 21 is filled between the rod-shaped heat insulating member 20 and the right end of the vacuum heat insulating panel 4e of the back wall portion 1e. Therefore, the two suction pipes 18 and 19 and the capillary tube 17 are in a state of being insulated by the rod-shaped heat insulating member 20 and the sponge-shaped heat insulating material 21.

However, in the present embodiment, the inner shell 10d of the right side wall portion 1d is extended long, and the space created behind the vacuum insulation panel 4d in the right side wall portion 1d and the vacuum in the back wall portion 1e. The space created on the right side of the heat insulating panel 4e has a form as if it is partitioned by the inner shell 10d of the right wall portion 1d, and the capillary tubes 17 and the suction pipes 18 and 19 housed in the rod-shaped heat insulating member 20 are It is as if it is arranged in the space generated behind the vacuum insulation panel 4d in the right wall portion 1d.

The rod-shaped heat insulating member 20 is formed in a square cross section having a size that fills the space between the rear end of the vacuum heat insulating panel 4d of the right side wall portion 1d and the connecting piece 11 of the outer shell 9d, and the rod-shaped heat insulating member 20 is formed. The length is set to the length dimension from the lower end of the right side wall portion 1d to the lower step portion of the rear portion of the ceiling wall portion 1a.

Assembling the suction pipes 18 and 19 and the capillary tube 17 inside the ridge angle portion on the right lateral rear side of the heat insulating box 1 is performed as follows. This assembly method is an example, and is not limited to this. First, the capillary tube 17 and the suction pipes 18 and 19 are inserted into the groove 20a of the rod-shaped heat insulating member 20 to be unitized (integrated) with the rod-shaped heat insulating member 20. In this case, the capillary tube 17, the suction pipes 18, 19 and the rod-shaped heat insulating member 20 may be fixed with an adhesive in order to be more firmly integrated. Then, as shown in FIG. 2, the upper end portions of the capillary tubes 17 and the suction pipes 18 and 19 are projected upward from the upper end of the rod-shaped heat insulating member 20 by a required length, and the lower end portions of the suction pipes 18 and 19 and the capillary tubes 17 are projected upward. Is laterally projected from the middle portion of the rod-shaped heat insulating member 20 by a required length in accordance with the arrangement position of the evaporator in the heat insulating box 1.

Next, the rod-shaped heat insulating member 20 is adhered to the inner surface of the outer shell 9d of the right side wall portion 1d so as to be in contact with the connecting piece 11 at the rear end, and then the vacuum heat insulating panel 4 is attached to the inner surface of the outer shell 9d. The rear end of the heat insulating panel 4 is adhered so as to be in contact with the rod-shaped heat insulating member 20, and finally the inner shell 10 is adhered to the vacuum heat insulating panel 4. At this time, one end side of the suction pipes 18 and 19 and the capillary tube 17 is projected outward from the notch (not shown) formed in the inner shell 9d.

Then, by connecting the right side wall portion 1d and the back wall portion 1e, the capillary tube 17 and the suction pipes 18 and 19 integrated with the rod-shaped heat insulating member 20 are housed inside the right rear ridge angle portion of the heat insulating box 1. It will be in the state of being. After that, when the ceiling wall portion 1a, the right side wall portion 1d, and the back wall portion 1e are combined, the capillary tube 17 and the suction pipes 18, 19 projecting upward from the upper end of the rod-shaped heat insulating member 20, that is, the upper end of the right side wall portion 1d. Is introduced into the machine room 6 through a through hole (not shown) formed in the ceiling wall portion 1a.

The capillary tube 17 introduced in the machine room 6 is connected to the end of the condenser pipe 16 via a three-way valve arranged in the machine room 6, and the two suction pipes 18 and 19 are connected to the compressor through a joint. Connected to the suction port. Then, the liquid refrigerant from the condenser pipe 16 is supplied to the evaporator for refrigeration and the evaporator for freezing by the action of the three-way valve, and the refrigerant evaporated by both evaporators is sucked into the compressor through the suction pipes 18 and 19. Become.

As described above, according to the present embodiment, since the capillary tubes 17 and the suction pipes 18 and 19 which are the pipes are arranged outside the storage space 5, the storage is different from the case where the pipes are arranged inside the storage space 5. It is prevented as much as possible to narrow the space 5 for piping, and the storage space 5 can be widely used for storing food.
Further, a low-temperature refrigerant flows through the suction pipes 18 and 19, but in the present embodiment, these capillary tubes 17 and suction pipes 18 and 19 are covered with heat insulating materials 20 and 21, so that dew condensation is prevented. be able to.

Further, since the capillary tubes 17, suction pipes 18 and 19, and the foamable heat insulating material 20 are unitized, they can be easily handled at the time of assembly or the like. Moreover, since the foamable heat insulating material 20 has rigidity, it is easier to handle than when it is soft, and the work of storing the capillary tubes 17 and the suction pipes 18 and 19 in the groove 20a can be easily performed. ..
Further, since the heat insulating box 1 is configured by combining a plurality of wall portions 1a to 1e, the capillary tubes 17 and suction pipes 18 and 19 are formed in the joint portion (ridge angle portion) between the right side wall portion 1d and the back wall portion 1e. The work of storing in the box can be performed relatively easily. It is particularly effective when the wall thicknesses of the left and right wall portions 1c and 1d are 35 mm or less. In the present embodiment, the vacuum insulation panel 4 is approximately 20 mm and the total thickness of the outer shell 7 and the inner shell 8 is approximately 1. The thickness is 5 mm, the total is 21.5 mm, and the thickness of the left and right wall portions 1c and 1d is more effective than 25 mm.

(Second Embodiment)
FIG. 7 shows a second embodiment. This embodiment differs from the first embodiment in the arrangement of the capillary tube 17 and the suction pipes 18 and 19. That is, in this embodiment, the grooves 20a of the rod-shaped heat insulating member 20 having a square cross section are formed diagonally from the ridge angle portion of the inner box 3 toward the ridge angle portion of the outer box 2, and a plurality of pipes are formed in the grooves 20a. In the case of this embodiment, a total of four pipes, two capillary tubes 17 and suction pipes 18 and 19, are provided side by side.

In this way, by arranging the suction pipes 18 and 19 thicker than the capillary tube 17 diagonally on the ridge angle portion of the heat insulating box 1, the suction pipes 18 and 19 are compared with the thickness of the vacuum heat insulating panel 4. Even if it is thick, it can be accommodated in the ridge angle portion of the heat insulating box 1.

(Third Embodiment)
FIG. 8 shows a third embodiment. This embodiment differs from the first embodiment in that the suction pipes 18 and 19 are not arranged inside the ridge angle portion where the two wall portions intersect, but the end portion of one wall portion, specifically, the end portion of the wall portion. For example, it is located inside the front end portion of the bottom wall portion 1b.
That is, the vacuum heat insulating panel 4b of the bottom wall portion 1b does not reach the connecting piece 11 (the end of the outer box 2) whose front end is bent upward toward the front end of the outer shell 9b, and is separated from the connecting piece 11 rearward. A rod-shaped heat insulating member 22 is arranged between the connecting piece 11 and the front end of the vacuum heat insulating panel 4. Then, the suction pipes 18 and 19 are inserted together with the capillary tube 17 in the groove 22a formed in the rod-shaped heat insulating member 22.

(Fourth Embodiment)
9 and 10 show a fourth embodiment. In this embodiment, the capillary tubes 17 and the suction pipes 18 and 19 are arranged outside the storage space 5, specifically, outside the outer box 2 of the heat insulating box 1.
That is, as shown in FIG. 9, the covering member 23 is attached to the outside of the ridge angle portion at the rear right side of the heat insulating box 1, for example. As shown in FIG. 10, the covering member 23 has an L-shaped cross section in which two face portions 23a and 23b intersect at right angles, and the tip portions of the two face portions 23a and 23b are curved inward and each face portion 23a , 23b have a cross-sectional container shape.

The inside of each of the surface portions 23a and 23b is filled with a foamable heat insulating material 24, and a groove 24a is formed on one of the surface portions 23b side of the foamable heat insulating material 24, and two grooves 24a are formed in the groove 24a. Suction pipes 18 and 19 are housed together with the capillary tube 17.
Each surface portion 23a of the covering member 23. Recesses 25 are intermittently formed in the 23b in the vertical direction. Then, the self-tapping screw 26 is passed through the recess 25 of the one surface portion 23a, and the self-tapping screw 26 is passed through the through hole (not shown) formed in the outer shell 9 of the back wall portion 1e to the outer shell of the right side wall portion 1d. The covering member 23 is screwed to the connecting piece 11 of 9, and the self-tapping screw 26 is passed through the recess 25 of the other surface portion 23b, and the self-tapping screw 26 is screwed to the outer shell 9d of the right side wall portion 1d. It is fixed to the outside of the ridge angle portion at the rear right side of the heat insulating box body 1.

(Other embodiments)
Although some embodiments have been described so far, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

For example, the heat insulating wall may be one in which the space between the inner shell and the outer shell is filled with a vacuum heat insulating panel and a foamed heat insulating material filled inside or outside the vacuum heat insulating panel.
The heat insulating box may be formed by combining an outer box formed in advance in a box shape and an inner box formed in advance in a box shape. In this case, before combining the outer box and the inner box, the vacuum insulation panel is attached to the inner surface of the outer box or the outer surface of the inner box so that the vacuum insulation panel is arranged between the outer box and the inner box. To do.
When the pipe is provided inside the wall portions 1a to 1e, not only the inside of the ridge angle portion forming the joint portion of the two wall portions, but also the right end and the right end wall portion of the vacuum insulation panel 4e of the back wall portion 1e in FIG. It may be provided in the space between the inner shell 10d of 1d.
The rod-shaped heat insulating members 20 and 22 may be made of a soft sponge-like material.
Piping is not limited to capillary tubes and suction pipes.

The following issues can be extracted from the present specification.
That is, in recent years, for example, refrigerators for home use tend to have an increasing internal volume, which is realized by reducing the thickness of the peripheral wall of the heat insulating box body without increasing the size of the heat insulating box body which is the main body of the refrigerator. Trying to. In this case, it is necessary to secure sufficient heat insulating performance even with the thin peripheral wall. Therefore, in addition to filling the peripheral wall of the heat insulating box with a foamable heat insulating material, the heat insulating performance is compared with that of the foamed heat insulating panel. Vacuum insulation panels, which are heat insulating panels with high thermal conductivity (low thermal conductivity), are used, and there are also those in which the peripheral wall of the heat insulating box is filled only with the vacuum heat insulating panels (for example, Patent Documents). 1, 2).

For the vacuum insulation panel, for example, glass wool, which is a cotton-like material of fine glass fiber, is made into a mat shape to form a core material, and this core material is placed in a gas barrier container made of a laminated film of aluminum foil and synthetic resin, and the inside is evacuated. It is a panel that keeps the inside of the container in a vacuum decompression state by exhausting and closing the opening, and it has low thermal conductivity (high heat insulation) even if it is thin, so by using this, a heat insulation box body It is possible to have high heat insulation on the peripheral wall of the.

The refrigeration cycle of a refrigerator requires many pipes such as condenser pipes, capillary tubes, and suction pipes. Of these, the capillary tube that connects the condenser pipe and the evaporator (cooler) and the suction pipe that connects the evaporator and the compressor are arranged in the storage space where the evaporator is inside the heat insulating box. Therefore, when the storage space is routed, the actual internal volume of the storage space is narrowed, and the storage volume of foods is reduced.
Therefore, we provide a refrigerator that can prevent the storage space of the heat insulating box from being narrowed by piping.

In the drawing, 1 is a heat insulating box, 2 is an outer box, 3 is an inner box, 4 is a vacuum heat insulating panel storage space, 5 is a storage space, 9 is an outer shell, 10 is an inner shell, and 17 is a capillary tube (piping). 18 and 19 are suction pipes, 20 is a rod-shaped heat insulating member, 21 is a heat insulating material, 22 is a rod-shaped heat insulating member, 23 is a covering member, and 24 is a foamable heat insulating material.

Claims (3)

A heat insulating box body configured by providing a heat insulating panel between the outer box and the inner box,
A member provided at the corner of the heat insulating box in a state of being separated from the heat insulating panel and in a state of being insulated from the surroundings and connecting the components of the refrigerator.
A member provided at a corner of the heat insulating box and covering a member connecting between the components of the refrigerator, and a member
A heat insulating material provided between the heat insulating panel and a member covering a member connecting between the components of the refrigerator and having a heat insulating property different from that of a member covering the member connecting the components of the refrigerator. When,
The refrigerator equipped with. The members connecting the components of the refrigerator are arranged in contact with the inner box.
The refrigerator according to claim 1. The members connecting the components of the refrigerator extend in the vertical direction along the corners of the heat insulating box.
The refrigerator according to claim 1 or 2.

Images