JP6721750B2 - refrigerator - Google Patents

Description

Embodiments of the present invention relate to a refrigerator.

The refrigerator includes a plurality of members that connect the components of the refrigerator, such as a capillary tube that connects between the condenser pipe and the evaporator (cooler) and a suction pipe that connects between the evaporator and the compressor. There is. However, when such a member is drawn into the storage space, the substantial internal volume of the storage space is narrowed and the storage volume of foods is reduced.

Japanese Patent No. 2728318 JP-A-6-147744

Then, the refrigerator which can prevent that the storage space of a heat insulation box is narrowed by the member which connects the components of a refrigerator is provided.

Refrigerator of the present embodiment, the heat insulation box body is provided by providing an insulation panel between the outer box and the inner box, and in a state of being insulated from the heat insulation panel and the surroundings of the heat insulation box body provided at the corner portion, and the member to separate the member for connecting the refrigerator components, the member that connects the components of the refrigerator is provided at a corner portion of the heat-insulating main body from an end portion of the insulating panel, A heat insulating material which is provided between the heat insulating panel and the separating member and is made of a material having a heat insulating property different from that of the separating member .

Sectional sectional drawing of the heat insulation box which shows 1st Embodiment Side view of insulation rod Perspective view of the insulation box seen from the front side Perspective view of the insulation box seen from the rear side Exploded perspective view of insulation box The vacuum heat insulation panel is shown, (a) is an exploded perspective view, (b) is sectional drawing. FIG. 1 corresponding to FIG. 1 showing the second embodiment. Partial longitudinal cross-sectional view showing a third embodiment A view corresponding to FIG. 4 showing the fourth embodiment. Figure 1 equivalent

A plurality of embodiments will be described with reference to the drawings. Note that the front, rear, left, and right of the refrigerator will be described with the door side of the refrigerator as “front side” and the right side when the refrigerator is viewed relative to the door as “right side”.

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

In the present embodiment, as shown in FIG. 5, the heat insulating box body 1 includes peripheral walls, 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 configured by being manufactured separately and combining a plurality of (five in the present embodiment) wall portions (heat insulating wall portions) 1 a to 1 e. 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 except for the ceiling wall portion 1a are rectangular flat plates, and only the ceiling wall portion 1a has a stepped lower rear portion. It has a shape. Due to the stepped shape of the ceiling wall portion 1a, when combined with the heat insulation box body 1, a machine room 6 for arranging a compressor of a refrigeration cycle or the like is formed in the upper rear portion of the heat insulation box body 1. ..

Here, the structure of each of the wall portions 1a to 1e will be described. First, the heat insulating function of each of the walls 1a to 1e is obtained by the vacuum heat insulating panel 4. As shown in FIG. 6A, the vacuum heat insulating panel 4 is formed by matting glass wool, which is a cotton-like material of thin glass fibers, into a core material 7, and the core material 7 is made of aluminum foil and synthetic resin. The inside of the gas barrier container 8 is kept in a vacuum reduced pressure 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. 6( a) and 6 (b ), each of the walls 1 a to 1 e has a vacuum heat insulation panel 4 between an outer shell 9 made of metal such as a steel plate and an inner shell 10 made of plastic, for example. With the filled structure, the outer shell 9 and the vacuum heat insulating panel 4, and the vacuum heat insulating panel 4 and the inner shell 10 are integrally fixed to each other by adhesion or the like. In addition, although it is shown as a flat plate-shaped wall portion in FIG. 6, the ceiling wall portion 1a is of course stepped.

In each of the wall portions 1a to 1e, the inner shell 10 is smaller in vertical and horizontal dimensions than the outer shell 9, and further, the vacuum heat insulating panel 4 is formed in smaller vertical and horizontal dimensions than the inner shell 10. Therefore, the longitudinal and lateral ends of the vacuum heat insulating panel 4 do not reach the longitudinal and lateral ends of the outer shell 9, but are located deeper inward than the longitudinal and lateral ends of the outer shell 9. ing. In addition, a connecting piece 11 is bent and formed at a right angle at a predetermined end of the outer shell 9 of a desired wall of the walls 1a to 1e. The connecting piece 11 is for connecting the outer shells 9 of the wall portions adjacent to each other with a screw or the like.

Then, by combining the respective wall portions 1a to 1e, the outer box 2 is constituted by the outer shell 9 of each of the wall portions 1a to 1e, and the inner box 3 is constituted by the inner shell 10, and A heat insulating box body 1 is provided between the box 2 and the inner box 3 which is provided with a vacuum heat insulating panel 4 which is a heat insulating panel having a higher heat insulating performance (lower thermal conductivity) than urethane foam.

FIG. 1 is a cross-sectional view of the ridge angle portion of the right rear portion of the heat insulating box 1, showing a connecting portion between the right wall portion 1d and the back wall portion 1e. Regarding the vacuum heat insulating panel 4, the outer shell 9, and the inner shell 10, in order to distinguish between the inner wall portion 1e and the right wall portion 1d, an "e" is added to the inner wall portion 1e. The right side wall portion 1d is shown with 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 inner wall portion 1e, The connecting piece 11 of the right sidewall 1d is applied to the right end of the outer shell 9e of the inner wall 1e from the inner surface side. The right end of the inner shell 10e of the inner wall 1e is abutted against the rear end surface of the inner shell 10d of the right wall 1d. The connecting piece 11 of the right side wall portion 1c and the right end portion of the outer shell 9e of the inner wall portion 1e are fastened with a screw (not shown). The right end of the inner shell 10e of the inner wall 1e and the inner shell 10d of the right wall 1d are sealed and connected by a sealant or a corner member having a triangular cross section.

As shown in FIG. 3, three horizontal frames 12 to 14 for partitioning the front surface in the vertical direction are attached to the front surface of the heat insulating box body 1, and a horizontal frame 13 at the middle stage and a horizontal frame 14 at the lower stage. A vertical frame 15 is attached between them. Although not shown, a heat insulating wall or a partition plate is 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 above by the heat insulating wall and the partition plate. The refrigerator compartment 5a, the vegetable compartment 5b, the side-by-side ice making compartment 5c, the specification switching compartment 5d, and the freezing compartment 5e are partitioned.

The refrigerator according to the present embodiment includes 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 refrigeration is It is arranged in a cooling chamber formed inside the freezing chamber 5e. Then, the cold air cooled by the two evaporators is blown by the fan to the refrigerating room 5a, the vegetable room 5b, the ice making room 5c and the specification switching room 5d arranged side by side, and the refrigerating temperature or the freezing temperature. It is configured to be cooled.

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

The refrigerant condensed in the condenser pipe 16 is supplied to each evaporator for refrigeration and freezing through the two capillary tubes 17 for refrigeration and freezing shown in FIG. 1, and the refrigerant evaporated in each evaporator is also shown in FIG. The suction pipes 18 and 19 shown in FIG. These capillary tubes 17 and suction pipes 18 and 19 are located outside the storage space 5 in the heat insulating box 1, in the present embodiment, inside the walls 1a to 1e of the heat insulating box 1, for example, the right side wall 1d and the back wall 1e. Is provided inside the ridge part on the right side and the rear side of the heat insulating box 1 which is a connecting part with (the inside of the ridge part of the heat insulating box 1 where the ends of the right wall part 1d and the back wall part 1e intersect) ing.

In terms of the arrangement positions of the capillary tube 17 and the suction pipes 18 and 19 in relation to the vacuum heat insulating panels 4d and 4e, the capillary tube 17 and the suction pipes 18 and 19 are located behind the vacuum heat insulating panel 4d of the right side wall portion 1d. On the extension (outer side) of the end (the end on the side where the piping is arranged), it is inside the end of the outer box 2 (the outer shell 9d of the right side wall 1d) and the right end of the vacuum heat insulating panel 4e of the back wall 1e. The extension (outer side) of the (end on the pipe arrangement side) is arranged 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 heat insulating panel 4d of the right wall 1d and the right end of the vacuum heat insulating panel 4e of the inner wall 1e are respectively the end of the right wall 1d (the connecting piece 11 which is the rear end of the outer shell 9d) and the inner wall. Since it does not reach the end of the portion 1e (the right end of the outer shell 9e) and is inside thereof, a space exists between the vacuum heat insulating panels 4d and 4e, and the capillary tube 17 and the suction pipe are located in the space. 18 and 19 can be arranged.

In this case, a rigid rod-shaped heat insulating member 20 made of, for example, foamable plastic is housed inside the ridge portion on the right 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. A space between the rod-shaped heat insulating member 20 and the right end of the vacuum heat insulating panel 4e of the inner wall 1e is filled with a sponge heat insulating material 21, for example. Therefore, the two suction pipes 18 and 19 and the capillary tube 17 are in a state of being thermally insulated by the rod-shaped heat insulating member 20 and the sponge heat insulating material 21.

However, in the present embodiment, the inner shell 10d of the right side wall portion 1d is elongated and the space generated on the rear side of the vacuum heat insulation panel 4d in the right side wall portion 1d and the inner wall portion 1e are vacuumed. The space generated on the right side of the heat insulating panel 4e has a shape as if partitioned by the inner shell 10d of the right side wall portion 1d, and the capillary tube 17 and the suction pipes 18 and 19 housed in the rod-shaped heat insulating member 20 are It is in the form of being arranged in the space formed on the rear side of the vacuum heat insulating panel 4d in the right side wall portion 1d.

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

The suction pipes 18, 19 and the capillary tube 17 are assembled in the ridge angle portion on the right lateral rear side of the heat insulating box 1 as follows. Note that this assembling method is an example, and the present invention is not limited to this. First, the capillary tube 17 and the suction pipes 18 and 19 are inserted into the groove 20 a 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 and the suction pipes 18, 19 and the rod-shaped heat insulating member 20 may be fixed to each other with an adhesive in order to integrate them more firmly. Then, as shown in FIG. 2, the upper end portions of the capillary tube 17 and the suction pipes 18 and 19 project 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 tube 17 are protruded. Is projected in the lateral direction from the middle portion of the rod-shaped heat insulating member 20 in accordance with the position of the evaporator in the heat insulating box 1 by a required length.

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 to the rod-shaped heat insulating member 20 so as to be in contact therewith, and finally the inner shell 10 is bonded to the vacuum heat insulating panel 4. At this time, the suction pipes 18 and 19 and one end side of the capillary tube 17 are made to project outside from the notch (not shown) formed in the inner shell 9d.

By connecting the right side wall portion 1d and the rear side 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 portion of the heat insulating box 1. It will be in the state of being. After that, when the ceiling wall portion 1a is combined with the right side wall portion 1d and the back wall portion 1e, 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 into the machine room 6 is connected to the terminal 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 via a joint. Connected to the inlet. The liquid refrigerant from the condenser pipe 16 is supplied to the evaporator for refrigeration and the evaporator for refrigeration by the action of the three-way valve, and the refrigerant evaporated in both evaporators is sucked into the compressor via the suction pipes 18 and 19. Become.

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

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

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

As described above, by arranging the suction pipes 18 and 19 thicker than the capillary tube 17 on the diagonal line of the ridge portion of the heat insulation box 1, the suction pipes 18 and 19 are compared with the thickness of the vacuum heat insulation panel 4. Even if it is thick, it can be accommodated in the ridge portion of the heat insulating box 1.

(Third Embodiment)
FIG. 8 shows a third embodiment. The difference of this embodiment from the first embodiment is that the suction pipes 18 and 19 are not arranged inside the ridge corner where the two walls intersect, but rather at the end of one wall, specifically, , For example, it is located inside the front end of the bottom wall 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 at the front end of the outer shell 9b, and is separated rearward from the connecting piece 11. The rod-shaped heat insulating member 22 is disposed 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 into the groove 22 a formed in the rod-shaped heat insulating member 22.

(Fourth Embodiment)
9 and 10 show a fourth embodiment. In this embodiment, the capillary tube 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, a cover member 23 is attached to the outside of the ridge corner on the right rear side of the heat insulating box 1, for example. As shown in FIG. 10, the cover member 23 has an L-shaped cross section in which two surface portions 23a and 23b intersect at a right angle, and the front end portions of the two surface portions 23a and 23b are curved inward to form the surface portions 23a. , 23b have a container-like cross section.

A foaming heat insulating material 24 is filled inside each of the surface portions 23a and 23b, and a groove 24a is formed on one surface portion 23b side of the foaming heat insulating material 24, and two grooves are formed in the groove 24a. The suction pipes 18 and 19 are housed together with the capillary tube 17.
Each surface portion 23a. 23b, recesses 25 are formed intermittently 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 a through hole (not shown) formed in the outer shell 9 of the inner wall portion 1e to the outer shell of the right side wall portion 1d. The cover 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 of the right rear part of the heat insulating box 1.

(Other embodiments)
Although some embodiments have been described above, 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 forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the scope of equivalents thereof.

For example, the heat insulating wall may be filled with a vacuum heat insulating panel and a foam heat insulating material filled inside or outside the vacuum heat insulating panel between the inner shell and the outer shell.
The heat insulation box body may be configured by combining an outer box previously formed in a box shape and an inner box previously formed in a box shape. In this case, before combining the outer and inner boxes, attach the vacuum heat insulating panel to the inner surface of the outer box or the outer surface of the inner box to arrange the vacuum heat insulating panel between the outer and inner boxes. To do.
When the pipe is provided inside the wall portions 1a to 1e, not only the inside of the ridge corner portion that forms the connecting portion of the two wall portions but also the right end and the right wall portion of the vacuum heat insulating panel 4e of the back wall portion 1e in FIG. You may make it provide in the space between the inner shell 10d of 1d.
The rod-shaped heat insulating members 20 and 22 may have a soft sponge shape.
The piping is not limited to the capillary tube and suction pipe.

The following problems can be extracted from this specification.
In other words, in recent years, for example, household refrigerators have an increasing internal volume, which is achieved by reducing the thickness of the peripheral wall of the heat insulating box, regardless of the size of the heat insulating box that is the main body of the refrigerator. Trying to. In this case, it is necessary to ensure sufficient heat insulation performance even with the thin peripheral wall. Therefore, in addition to filling the peripheral wall of the heat insulation box with the foam insulation material, the heat insulation performance is higher than that of the foam insulation panel. It has been practiced to use a vacuum heat insulating panel which is a heat insulating panel having a high heat resistance (low thermal conductivity), and there is also one in which the peripheral wall of the heat insulating box is filled only with the vacuum heat insulating panel (for example, Patent Document 1). 1, 2).

The vacuum heat insulation panel is made by matting glass wool, which is a cotton-like material of thin glass fiber, into a core material, and putting this core material in a gas barrier container made of a laminated film of aluminum foil and synthetic resin, and vacuuming the inside. It is a panel that keeps the inside of the container in a vacuum and decompressed state by exhausting it and closing the opening. It has a low thermal conductivity (high heat insulation) even if it is thin, so by using this it is a heat insulation box body It is possible to have a high heat insulating property on the peripheral wall of.

The refrigeration cycle of a refrigerator requires many pipes such as a condenser pipe, a capillary tube, and a suction pipe. Among these, the capillary tube that connects between the condenser pipe and the evaporator (cooler) and the suction pipe that connects between the evaporator and the compressor are arranged in the storage space inside the heat insulation box. When the inside of the storage space is drawn around, the substantial internal volume of the storage space is narrowed, and the storage volume of foods decreases.
Then, the refrigerator which can prevent that the storage space of a heat insulation box is narrowed by piping is provided.

In the drawings, 1 is an insulation box, 2 is an outer box, 3 is an inner box, 4 is a vacuum insulation panel storage space, 5 is a storage space, 9 is an outer shell, 10 is an inner shell, 17 is a capillary tube (pipe), 18 and 19 are suction pipes (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 foaming heat insulating material.

Claims (2)

An insulating box body provided with an insulating panel between the outer box and the inner box,
A member that is provided at a corner of the heat-insulating box in a state of being insulated from the periphery and in a state of being separated from the heat-insulating panel, and connecting the components of the refrigerator.
A member that is provided at a corner of the heat-insulating box and separates a member that connects the components of the refrigerator from the end of the heat-insulating panel,
A heat insulating material that is provided between the heat insulating panel and the separating member and is made of a material having different heat insulating properties from the separating member,
Equipped with a refrigerator. Member for connecting between said refrigerator components are disposed in contact with the front Symbol inner box,
The refrigerator according to claim 1.

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