WO2023139649A1

WO2023139649A1 - Refrigerator

Info

Publication number: WO2023139649A1
Application number: PCT/JP2022/001616
Authority: WO
Inventors: 逸人水野
Original assignee: 三菱電機株式会社
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2023-07-27
Also published as: JPWO2023139649A1

Abstract

This refrigerator comprises: an outer box constituting the outside surface of a refrigerator body; an inner box that is provided inside the outer box and that has an inner-box ceiling plate, an inner-box left-side surface plate, an inner-box right-side surface plate, an inner-box back-surface plate, and an inner-box bottom-surface plate together forming a storage space; and partitions dividing the storage space into a plurality of storage chambers. In a first storage chamber that is the top chamber among the plurality of storage chambers, first drafts are provided to the inner-box left-side surface plate and the inner-box right-side surface plate so as to increase the distance between the inner-box left-side surface plate and the inner-box right-side surface plate toward the front surface side of the inner box, as viewed in a cross section parallel to the bottom surface of the refrigerator body, in a first region extending from the inner-box ceiling plate to a predetermined height. In the first storage chamber, second drafts are provided to the inner-box left-side surface plate and the inner-box right-side surface plate, as viewed in the cross section parallel to the bottom surface of the refrigerator body, in a second region below the first region. The second drafts are smaller than the first drafts.

Description

refrigerator

The present disclosure relates to a refrigerator having an outer box and an inner box.

Conventionally, there is a refrigerator body that has an inner box made of synthetic resin and an outer box made of steel plate, and is formed by filling the space formed between the inner box and the outer box with a heat insulating material made of urethane foam. The inner box of such a refrigerator body can be manufactured by vacuum forming. Since it is necessary to remove the inner box from the mold after vacuum forming, the wall surface of the inner box is provided with a so-called draft angle. However, if the wall surface of the inner box is provided with a draft angle, the storage capacity of the storage space of the refrigerator main body is reduced.

A technique has been disclosed for increasing the capacity of the storage space of a refrigerator by constructing each wall of the refrigerator body with separate parts, connecting the surfaces to form the refrigerator body, and eliminating the draft required when molding the inner box (see Patent Document 1).

JP 2013-119964 A

However, with the technique of Patent Document 1, each wall of the refrigerator body is made up of separate parts, so the number of parts is large, and the number of assembly steps required during manufacturing is large.

The present disclosure has been made in view of the above circumstances, and aims to provide a refrigerator with a large storage capacity while reducing the number of parts and manufacturing costs.

A refrigerator according to the present disclosure includes an outer box that forms the outer surface of a refrigerator body; an inner box that is provided in the outer box and has an inner box ceiling plate, an inner box left side plate, an inner box right side plate, an inner box rear plate, and an inner box bottom plate that form a storage space; and a partition that divides the storage space into a plurality of storage compartments. , the inner box left side plate and the inner box right side plate are provided with a first draft so that the distance between the inner box left side plate and the inner box right side plate increases toward the front side of the inner box, and in the first storage chamber, a second region below the first region is provided with a second draft on the inner box left side plate and the inner box right side plate when viewed in a cross section parallel to the bottom surface of the refrigerator body, and the second draft is the first draft. less than

According to the present disclosure, in the first storage compartment, when viewed in a cross section parallel to the bottom surface of the refrigerator body, a first draft angle is provided on the inner box left side plate and the inner box right side plate so that the distance between the inner box left side plate and the inner box right side plate increases toward the front side of the inner box. In the first storage compartment, a second draft angle is provided on the inner box left side plate and the inner box right side plate when viewed in a cross section parallel to the bottom surface of the refrigerator body in the second area below the first area. The second draft angle is smaller than the first draft angle. Therefore, when removing the mold after molding the inner box, the gap between the inner box and the mold can be easily widened, and the releasability of the inner box can be improved. As a result, it is possible to provide a refrigerator with a large storage capacity while suppressing parts and manufacturing costs.

1 is a front view of a refrigerator according to Embodiment 1; FIG. 1 is a perspective view of a refrigerator according to Embodiment 1. FIG. 1 is a front view of a refrigerator main body according to Embodiment 1. FIG. 2 is a rear view of the refrigerator main body according to Embodiment 1. FIG. 3 is a right side view of the refrigerator main body according to Embodiment 1. FIG. 4 is a cross-sectional view of the refrigerator main body shown in FIG. 3 according to Embodiment 1, taken along line AA. FIG. FIG. 4 is a BB cross-sectional view of the refrigerator main body shown in FIG. 3 according to Embodiment 1; 4 is a cross-sectional view of the third region in a cross section parallel to the bottom surface, which is the lower surface of the outer case of the vegetable compartment according to Embodiment 1. FIG. 4 is a cross-sectional view of a fourth region in a cross section parallel to the bottom surface, which is the lower surface of the outer case of the vegetable compartment according to Embodiment 1. FIG. FIG. 4 is a CC cross-sectional view of the refrigerator main body shown in FIG. 3 according to Embodiment 1; 4 is a perspective view of a corner portion of the inner box according to Embodiment 1. FIG. 8 is an enlarged view of a second chamfered portion according to Embodiment 2. FIG. FIG. 10 is a schematic diagram of a urethane foaming jig according to Embodiment 2 as viewed from the rear side. FIG. 10 is a diagram showing a state in which a urethane foaming jig is inserted into the inner box according to Embodiment 2; FIG. 10 is a diagram showing a state of a urethane foaming jig before or after filling an inner box with urethane according to Embodiment 2; FIG. 11 is a perspective view showing the inside of a refrigerating compartment according to Embodiment 2; FIG. 4 is an enlarged view of a part of the DD cross section passing through the shelf support part of FIG. 3 according to Embodiment 2; FIG. 18 is a diagram of a comparative example in which a part of the same DD cross section as that of FIG. 17 is enlarged, and shows a state in which a urethane foaming jig is inserted into a refrigerator compartment without a urethane foaming jig guide portion provided on the side surface of the inner box.

A refrigerator according to an embodiment will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description is given only when necessary. The present disclosure may include any combination of configurations that can be combined among the configurations described in each of the following embodiments. Also, in the drawings, the size relationship of each component may differ from the actual size. The forms of the constituent elements shown in the entire specification are merely examples, and are not limited to the forms described in the specification. In particular, the combination of components is not limited only to the combinations in each embodiment, and the components described in other embodiments can be applied to other embodiments. Further, in the following embodiments, a plurality of constituent elements may be distinguished from each other by adding a number or the like to the end of the reference numerals of the constituent elements. However, when a plurality of constituent elements are collectively explained, or when one of the constituent elements is explained as a representative, the explanation may be made without attaching numbers or the like. In the drawings of cross-sectional views, hatching is appropriately omitted in view of visibility.

In the following description, terms representing directions (e.g., "up", "down", "right", "left", "front", "back", etc.) are used as appropriate to facilitate understanding, but these are for explanation purposes and do not limit the present embodiment. Also, in each drawing, the relative dimensional relationship or shape of each component may differ from the actual one.

Embodiment 1.
FIG. 1 is a front view of a refrigerator 100 according to Embodiment 1. FIG. FIG. 2 is a perspective view of the refrigerator 100 according to Embodiment 1. FIG.

In addition, in

Embodiments

1 and 2, the refrigerator 100 with 6 doors will be described as an example, but

Embodiments

1 and 2 can also be applied to refrigerators 100 with 5 doors or less and 7 doors or more.

As shown in FIGS. 1 and 2, the refrigerator 100 according to Embodiment 1 includes a refrigerator main body 101 forming an outer shell, and the refrigerator main body 101 has a storage space 50a (see FIG. 3) inside. The storage space 50a is partitioned into a plurality of storage chambers by a plurality of

partitions

10, 11, 12 and 13 provided inside the refrigerator body 101, as shown in FIG.

The plurality of storage compartments are a refrigerator compartment 1, an ice making compartment 2, a small freezer compartment 3, a freezer compartment 4, and a vegetable compartment 5. Refrigerating compartment 1 is provided at the top of refrigerator 100, and the front opening is closed by two double doors, ie, refrigerating compartment left door 1a and refrigerating compartment right door 1b. Refrigerator 100 includes icemaker door 2a, small freezer compartment door 3a, freezer compartment door 4a, and vegetable compartment door 5a.

Below the refrigerating compartment 1, an ice making compartment 2, from which the storage compartment is pulled out to the user side when the ice making compartment door 2a is pulled out, and a small freezer compartment 3, from which the storage compartment is pulled out to the user side when the small freezer compartment door 3a is pulled out, are arranged in parallel.

A vegetable compartment 5 is provided at the bottom of the refrigerator 100. The storage compartment is pulled out to the user side when the vegetable compartment door 5a is pulled out. Above the vegetable compartment 5, there is provided a freezer compartment 4 which can be pulled out to the user side when a freezer compartment door 4a is pulled out. The freezer compartment 4 is provided below the ice making compartment 2 and the small freezer compartment 3 and above the vegetable compartment 5 which are arranged side by side in parallel. The arrangement of the plurality of storage compartments, ie, the refrigerator compartment 1, the ice making compartment 2, the small freezer compartment 3, the freezer compartment 4, and the vegetable compartment 5, is not limited to that described in the first and second embodiments.

In FIG. 2, 101a indicates the front of the refrigerator body. 101b indicates the back of the refrigerator main body. 101c indicates the left side of the refrigerator main body. 101d indicates the right side of the refrigerator body. 101e indicates the ceiling surface of the refrigerator main body. 101f indicates the bottom surface of the refrigerator main body. Refrigerator body 101 has an insulating box body 50 composed of inner box 9 (see FIG. 3) and outer box 8 (see FIG. 3) forming the outer surface of refrigerator body 101, and a space formed between inner box 9 and outer box 8, which is filled with foamed urethane.

FIG. 3 is a front view of the refrigerator main body 101 according to Embodiment 1. FIG. Refrigerator main body 101 (insulating box body 50) has an opening of storage space 50a on the front surface. Storage space 50 a of refrigerator body 101 is partitioned into a plurality of storage compartments by

partitions

10 , 11 , 12 and 13 . A refrigerating compartment 1, an ice making compartment 2 and a small freezer compartment 3 are adiabatically partitioned by a partition 10.例文帳に追加The ice making compartment 2 and the small freezer compartment 3 are adiabatically partitioned by a partition 11.例文帳に追加The ice making compartment 2, the small freezer compartment 3, and the freezer compartment 4 are adiabatically partitioned by a partition 12.例文帳に追加The freezer compartment 4 and the vegetable compartment 5 are adiabatically partitioned by a partition 13. - 特許庁

The first area 60 is an area from the inner box ceiling plate 23 to a predetermined height in the refrigerating compartment 1, which is the first storage compartment at the top of the plurality of storage compartments. In Embodiment 1, the first area 60 is, for example, an area above the refrigerator body 101 from the ceiling surface 23a shown in FIG. The second area 61 is an area below the first area 60 in the refrigerator compartment 1, which is the first storage compartment. The third region 62 is a region from the inner box bottom plate 24 to a predetermined height in the vegetable compartment 5, which is the second lowest storage compartment among the plurality of storage compartments. In Embodiment 1, the third area 62 is, for example, the area below the refrigerator body 101 from the door rail portion 20 to the bottom surface 24a. The fourth area 63 is an area above the area of the third area 62 in the vegetable compartment 5 that is the second storage compartment. The fifth area 64 is the area of the ice making compartment 2, the small freezer compartment 3, and the freezer compartment 4 provided between the refrigerator compartment 1 and the vegetable compartment 5. FIG.

In Embodiment 1, the first storage compartment and the second storage compartment are arranged vertically with the ice making compartment 2, the small freezer compartment 3, and the freezer compartment 4 interposed therebetween, but the arrangement configuration of the storage compartments of the refrigerator 100 is not limited to this. For example, refrigerator 100 may be configured to have only the first storage compartment and the second storage compartment. In this case, the first storage chamber includes a first region 60 and a second region 61 in order from the top, and the second storage chamber includes a fourth region 63 and a third region 62 in order from the top. Furthermore, in this case, the first storage chamber may include other regions below the first region 60 and the second region 61, and the second storage chamber may include other regions above the third region 62 and the fourth region 63.

The inner box 9 is provided inside the outer box 8 and has an inner box ceiling plate 23, an inner box left side plate 21, an inner box right side plate 22, an inner box rear plate 35, and an inner box bottom plate 24 that form a storage space 50a.

The inner box corner 25 a is the upper left corner of the inner box 9 . The inner box corner portion 25 b is the upper right corner portion of the inner box 9 . The inner box corner portion 25 c is the lower left corner portion of the inner box 9 . The inner box corner portion 25 d is the lower right corner portion of the inner box 9 .

The shelf support part 34 is provided on the inner box left side plate 21 and the inner box right side plate 22 of the inner box 9, and supports a shelf for placing food. The door rail portion 20 supports the frame of the vegetable compartment door 5a.

4 is a rear view of the refrigerator main body 101 according to Embodiment 1. FIG. FIG. 5 is a right side view of the refrigerator main body 101 according to Embodiment 1. FIG.

As shown in FIG. 4, the refrigerator main body rear surface 101b of the refrigerator main body 101 is provided with

injection ports

15a, 15b, 15c, and 15d for injecting foamed urethane between the inner box 9 and the outer box 8.

As indicated by the dashed line in FIG. 4 , a rear vacuum heat insulating material 16 is arranged between the inner box 9 and the outer box rear plate 14 of the outer box 8 in order to improve the heat insulating performance of the refrigerator 100 . The ratio of the projection surface of the vacuum insulation material to the projection surface of the product is called the coverage ratio.

The rear vacuum heat insulating material 16 in the rear view of FIG. 4 has chamfered corners so as to ensure coverage with respect to the refrigerator main body rear surface 101 b of the refrigerator main body 101 . The injection port 15a, the injection port 15b, the injection port 15c, and the injection port 15d are provided outside the four chamfered shapes of the rear vacuum heat insulating material 16 of the outer box rear plate 14 when the refrigerator main body rear surface 101b of the refrigerator main body 101 is viewed from the front.

A ceiling vacuum heat insulating material 17 with high heat insulating performance is arranged between the inner box 9 and the outer box 8 on the ceiling surface 101e of the refrigerator main body. A floor surface vacuum heat insulating material 18 having high heat insulating performance is arranged between the inner box 9 and the outer box 8 on the bottom surface 101f of the refrigerator main body. Although not shown, a side surface vacuum heat insulating material 19 having high heat insulating performance is arranged between the left side surface 21a and the left side surface 101c of the outer casing 8, similarly to the refrigerator main body rear surface 101b.

As shown in FIG. 5, on the right side surface 101d of the refrigerator main body, a side vacuum heat insulating material 19 with high heat insulating performance is arranged between the inner box 9 and the outer box 8, similarly to the refrigerator main body back surface 101b.

In the process of filling the refrigerator main body 101 with urethane foam, the refrigerator main body 101 is laid down with the front surface where the opening is formed facing downward. In this state, a liquid foamed urethane material is filled through four

inlets

15a, 15b, 15c, and 15d formed in the outer case back plate 14 of the outer case 8 forming the refrigerator main body back surface 101b. The urethane foam material is filled by mixing and reacting an isocyanate component, a premixed component consisting of a polyol, a foaming agent, a catalyst, and a foaming agent, while foaming the flow path between the inner box 9 and the outer box 8 . The gel time during foaming is set to less than 25 seconds, and the foaming ratio is set to about 80% when the gel time is reached. The gel time is the time from when the urethane foam is injected until it hardens. With such a setting, while securing the fluidity necessary for filling, curing is completed at the time of completion of filling, and the formulation is less likely to leak from gaps in the product.

It is desirable to secure a dimension of 3 mm or more between the inner box 9 and the rear vacuum heat insulating material 16, the ceiling vacuum heat insulating material 17, the floor vacuum heat insulating material 18, and the side vacuum heat insulating material 19 as a flow path for sufficiently filling the heat insulating box body 50 with urethane foam.

FIG. 6 is a cross-sectional view of the refrigerator main body 101 shown in FIG. 3 according to the first embodiment taken along line AA. The AA cross section is parallel to the bottom surface 101f of the refrigerator main body 101, which is the lower surface of the outer casing 8 of the refrigerator main body 101. FIG. FIG. 6 is a cross section in a second region 61 (see FIG. 3), which is a region below the first region 60 (see FIG. 3) in the refrigerator compartment 1, and shows a cross section at a position below the uppermost shelf support portion 34 (see FIG. 3).

As shown in FIG. 6, in a second region 61 below the first region 60 in the refrigerating chamber 1, which is the first storage chamber, a second draft angle L2 is provided in the inner box left side plate 21 so that the distance between the inner box left side plate 21 and the inner box left side plate 21 increases toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. In the refrigerating chamber 1, which is the first storage chamber, a second draft angle L2 is provided in a second region 61 below the first region 60 so that the inner box right side plate 22 widens the distance between the inner box right side plate 22 toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. The gradient of the second draft angle L2 includes 0°.

The inner box left side plate 21 (left side 21a) and the inner box right side plate 22 (right side 22a) of the inner box 9 are provided substantially parallel to each other. The inner box left side plate 21 and the inner box right side plate 22 are perpendicular to the inner box rear plate 35 of the inner box 9 and are provided at an angle parallel to the front-rear direction of the refrigerator body 101 .

In the first embodiment, in the refrigerator body 101, the region where the inner box left side plate 21 and the inner box right side plate 22 are provided substantially parallel extends from the uppermost shelf support portion 34 to the door rail portion 20 that supports the frame of the vegetable compartment door 5a that is the lowermost storage compartment. In the first storage chamber, below the second region 61, there is provided a region where the inner box left side plate 21 and the inner box right side plate 22 are parallel. By making the inner box left side plate 21 and the inner box right side plate 22 of the inner box 9 substantially parallel to each other in this way, the storage capacity in the refrigerator 100 can be increased within the determined outer dimensions.

Note that "substantially parallel" may include not only the case of being strictly parallel, but also the case of deviation from parallel of less than 0.1°. The same is true for substantially orthogonal.

Also, the area where the inner box left side plate 21 and the inner box right side plate 22 are provided substantially parallel to each other does not have to be the entire area from the uppermost stage of the shelf support portion 34 to the door rail portion 20 . The inner box left side plate 21 and the inner box right side plate 22 may be provided substantially parallel to each other in at least a part of the region from the top of the shelf support portion 34 to the door rail portion 20b.

The first chamfered portion 26a at the back left inner portion of the inner box 9 is a corner formed by the left side 21a of the inner box 9 and the back surface 35a of the inner box 9 and is a chamfered corner. The second chamfered portion 26b on the right inner portion of the back surface of the inner box 9 is a chamfered corner formed by the right side surface 22a of the inner box 9 and the back surface 35a of the inner box 9 .

The first chamfered portion 26 a is continuous with the inner box ceiling plate 23 and the inner box left side plate 21 . The second chamfered portion 26 b is continuous with the inner box ceiling slab 23 and the inner box right side plate 22 .

FIG. 7 is a BB cross-sectional view of the refrigerator main body 101 shown in FIG. 3 according to the first embodiment. A plane BB is a cross section parallel to the bottom surface 101f of the refrigerator main body. FIG. 7 is a cross section of the first region 60 from the ceiling surface 23a of the refrigerator compartment 1 to a predetermined height. As an example, the first area 60 is an area between the ceiling surface 23a of the refrigerator compartment 1 and the uppermost shelf support portion 34 .

As shown in FIG. 7, in the refrigerator compartment 1, which is the uppermost first storage compartment, a first draft angle L1 is provided in the first region 60 from the inner box ceiling plate 23 (see FIG. 3) to a predetermined height so that the distance between the inner box left side plate 21 and the inner box left side plate 21 increases toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. Further, in the refrigerating chamber 1, which is the uppermost first storage chamber, a first draft angle L1 is provided in a first region 60 from the inner box ceiling plate 23 (see FIG. 3) to a predetermined height so that the inner box right side plate 22 widens the distance between the inner box right side plate 22 toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. The second draft angle L2 is smaller than the first draft angle L1.

The third chamfered portion 26 c is continuous with the inner box ceiling plate 23 and the inner box left side plate 21 . The fourth chamfered portion 26 d is continuous with the inner box ceiling plate 23 and the inner box right side plate 22 .

Next, the first region 60 provided with the first draft angle L1 and the second draft angle L2 in the refrigerator compartment 1 will be described. A first draft angle L1 of about 1° is provided on each of the left side surface 21a and the right side surface 22a from an angle perpendicular to the rear surface 35a from the ceiling surface 23a of the inner box 9 to a predetermined height. The predetermined height is, for example, approximately 30 mm below the ends of the rounded surfaces of the inner box corner portion 25a and the inner box corner portion 25b. The first draft angle L1 is continuously changed to 0° toward the upper end of the uppermost shelf support portion 34, and the second draft angle L2 is 0° in the second region 61 below the uppermost shelf support portion 34.

The third region 62 in which the vegetable compartment 5, which is the second storage compartment, is provided with the third draft angle L3 and the fourth draft angle L4 will be described. 8 is a cross-sectional view of the third region 62 in a cross section parallel to the bottom surface, which is the lower surface of the outer case 8 of the vegetable compartment 5 according to Embodiment 1. FIG. 9 is a cross-sectional view of the fourth region 63 in a cross section parallel to the bottom surface, which is the lower surface of the outer case 8 of the vegetable compartment 5 according to Embodiment 1. FIG.

As shown in FIG. 8, in the vegetable compartment 5, which is the second storage compartment, a fourth draft angle L4 is provided in the fourth area 63 from the inner box bottom plate 24 to a predetermined height so that the distance between the inner box left side plates 21 increases toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. In the vegetable compartment 5, which is the second storage compartment, a fourth draft angle L4 is provided in a fourth area 63 from the inner box bottom plate 24 to a predetermined height so that the inner box right side plate 22 widens the distance between the inner box right side plates 22 toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. The gradient of the fourth draft angle L4 includes 0°. The fourth area 63 is above the third area 62 .

The first chamfered portion 26 a in the fourth region 63 is provided in the second region 61 and is continuous with the inner box rear plate 35 and the inner box left side plate 21 . The second chamfered portion 26 b is provided in the second region 61 and is continuous with the inner box rear plate 35 and the inner box right side plate 22 .

As shown in FIG. 9, in the vegetable compartment 5, which is the second storage compartment, a third draft angle L3 is provided in the third area 62 below the fourth area 63 so that the distance between the inner box left side plate 21 and the inner box left side plate 21 increases toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. In addition, in the vegetable compartment 5, which is the second storage compartment, a third draft L3 is provided in a third region 62 below the fourth region 63 so that the inner box right side plate 22 widens the distance between the inner box right side plate 22 and the inner box right side plate 22 toward the front side of the inner box 9 when viewed in a cross section parallel to the refrigerator main body bottom surface 101f. The fourth draft angle L4 is smaller than the third draft angle L3.

In the second storage room, above the fourth area 63, there is provided an area where the inner box left side plate 21 and the inner box right side plate 22 are parallel.

The third chamfered portion 26 c in the third region 62 is continuous with the inner box rear plate 35 and the inner box left side plate 21 . The fourth chamfered portion 26 d is continuous with the inner box bottom plate 24 and the inner box right side plate 22 .

A third draft angle L3 of about 1° is provided on each of the left side 21a and the right side 22a from the inner box bottom plate 24 of the inner box 9 to a predetermined height. The predetermined height is, for example, about 30 mm above the end of the R surface of the inner box corner portion 25c and the inner box corner portion 25d.

Then, the third draft angle L3 of the left side surface 21a and the right side surface 22a is continuously changed to 0° from a predetermined height to the lower end of the rail portion of the vegetable compartment door 5a, and the fourth draft angle L4 is 0° in the fourth region 63 above the rail portion of the vegetable compartment door 5a.

Note that the vertical width of the left side surface 21a and the right side surface 22a that continuously change the third draft angle L3 to 0° is not limited to this. The heights of the first region 60 and the third region 62 are also not limited to this. Moreover, the case where the inner box corner portion 25 is not provided with the rounded surface is also included in the first and second embodiments.

The ice making compartment 2, the small freezer compartment 3, and the freezer compartment 4 provided between the refrigerator compartment 1 and the vegetable compartment 5 correspond to the fifth area 64. In the fifth area 64, the draft angle L of the left side surface 21a and the right side surface 22a is 0°. That is, in the fifth region 64, which is the region below the first region 60 and the second region 61 and the region above the third region 62 and the fourth region 63, the left side 21a and the right side 22a are parallel.

According to the refrigerator 100 of Embodiment 1, the second draft angle L2 is smaller than the first draft angle L1. Therefore, the storage volume in the refrigerator 100 of Embodiment 1 can be increased compared to the refrigerator 100 having the draft angle L in the inner box left side plate 21 and the inner box right side plate 22 from the ceiling surface 23a to the bottom surface 24a of the storage space 50a.

FIG. 10 is a CC cross-sectional view of the refrigerator main body 101 shown in FIG. 3 according to the first embodiment. In FIG. 10, the inner box ceiling plate 23 and the inner box bottom plate 24 are provided at an angle substantially perpendicular to the back surface 35a, and are configured without a draft angle L such that the distance between the inner box ceiling plate 23 and the inner box bottom plate 24 increases toward the opening surface.

As shown in FIG. 10, a urethane flow path r is secured in the space between the outer box 8 and the inner box 9 of the refrigerator body 101 . As shown in FIGS. 3 and 4, the outer sides of the inner box left side plate 21 and the inner box right side plate 22 of the storage space 50a formed by the inner box 9 are configured without providing a draft L from an angle perpendicular to the outer box rear plate 14 of the refrigerator body 101 in the first region 60. With such a configuration, it is possible to ensure the storage volume in refrigerator 100 within the determined external dimensions.

In the first embodiment, the space around the left side 21a and right side 22a of the storage compartment in the first area 60 and the space around the left side 21a and right side 22a of the storage compartment in the third area 62 are used to provide the inner box left side plate 21 and the inner box right side plate 22 with a draft angle L. As a result, it is possible to secure the releasability of the inner box 9 from the mold while maintaining the storability of the refrigerator 100 .

The reason why the left side plate 21 of the inner box and the right side plate 22 of the inner box are each provided with the draft angle L will be described.
The inner box 9 is formed by vacuum forming. A film made of resin is used as a molding material. A heated film is placed on a mold, a vacuum state is created between the film and the mold, the film is adsorbed to the mold (molding mold), and the film is processed (molded) by the mold to manufacture the inner box 9.

After forming the inner box 9 by vacuum forming, it is necessary to remove (release) the inner box 9 from the mold. When removing the inner box 9 from the mold after molding, air is sent into the inner box 9 to inflate the inner box 9 in order to assist release. Then, the back surface 35a of the inner box 9 is pushed from the inside by a pin provided in the mold, and the inner box 9 is removed from the mold. At that time, the periphery of the

inner box corners

25a, 25b, 25c and 25d of the inner box at the four corners of the inner box 9 is hard and hard to deform compared to the flat portions which are the central portions of the side, top and bottom surfaces of the outer box 8 and the inner box 9.

As shown in FIGS. 3 and 7, a first draft angle L1 is provided on the side surface of the inner box 9 from the ceiling surface 23a and floor surface of the refrigerating compartment 1 near the inner box corners 25a and 25b to a predetermined height. A third draft angle L3 is provided on the side surface of the inner box 9 from the bottom surface 24a of the vegetable compartment 5 near the

inner box corners

25c and 25d to a predetermined height. As a result, it is possible to secure the releasability necessary for production without providing the other portion of the inner box 9 with a draft angle L.

Specifically, the draft angle L is provided between the ceiling surface 23a of the refrigerator compartment 1 and the uppermost shelf support part 34, between the bottom surface 24a of the inner box 9 of the vegetable compartment 5 of the lowermost compartment and the door rail part 20, or either one of the above. As for the draft angle L, the inner box left side plate 21 and the inner box right side plate 22 each have a draft angle L of about 1° from the rear to the front of the refrigerator body 101 in the direction in which they spread apart. The draft angles L are each inclined in the horizontal direction by about 1° from the angle perpendicular to the back surface 35a. This makes it possible to secure the releasability of the inner box 9 from the mold.

The inner box left side plate 21 and the inner box right side plate 22 each have a draft angle L of about 1° in the direction in which the distance between them increases, so that the dimension between the inner box 9 and the back vacuum heat insulating material 16 can be ensured to be 3 mm or more. In addition, the lateral width of the rear side of the storage space 50a at the central portion in the vertical direction of the refrigerator body 101 can be increased by about 1 cm as compared with the conventional refrigerator. Note that there is a tolerance of ±1 mm for the left and right frontage widths.

The space between the inner box 9 and the outer box 8 is filled with foamed urethane to ensure heat insulating performance, but when the foamed urethane is filled, a large foaming pressure is applied to the refrigerator main body 101 of the refrigerator 100 . In order to suppress deformation of the outer box 8, the inner box 9, the partitions 10, the partitions 12 and the partitions 13 due to the foaming pressure, it is necessary to hold the inner boxes 9, the outer boxes 8, the partitions 10, the partitions 12 and the periphery of the partitions 13 with a foaming jig without gaps when filling the foamed urethane.

In the first embodiment, a part of the inner box left side plate 21 and the inner box right side plate 22 of the inner box 9 is provided with a draft angle L of about 1° in a mutually widening direction from the rear to the front of the refrigerator body 101 . By configuring the inner box 9 as described above, air can easily enter between the inner box 9 and the urethane foaming jig 31, so that the foaming jig can be smoothly inserted and pulled out even in the urethane foaming injection process.

11 is a perspective view of the inner box corner portion 41b according to Embodiment 1. FIG. Although FIG. 11 shows only the inner box corner portion 41b, the inner box corner portion 41a, the inner box corner portion 41c, and the inner box corner portion 41d also have the same configuration as the inner box corner portion 41b.

As shown in FIG. 11, the curvature radius R of the second chamfered portion 41b of the inner box corner portion 41b is formed to gradually increase from the front surface 41b_1 of the refrigerator body 101 toward the rear surface 41b_2 of the refrigerator body 101. The curvature radii R of the first chamfered portion 41a, the third chamfered portion 41c, and the fourth chamfered portion 41d are configured similarly to the second chamfered portion 41b.

The first chamfered portion 41 a is continuous with the inner box ceiling plate 23 and the inner box left side plate 21 . The second chamfered portion 41 b is continuous with the inner box ceiling plate 23 and the inner box right side plate 22 . The third chamfered portion 41 c is continuous with the inner box ceiling plate 23 and the inner box left side plate 21 . The fourth chamfered portion 41 d is continuous with the inner box ceiling plate 23 and the inner box right side plate 22 .

At least one of the set of the first chamfered portion 41a and the second chamfered portion 41b and the set of the third chamfered portion 41c and the fourth chamfered portion 41d are chamfered so that the radius of curvature gradually increases from the front to the rear of the refrigerator body 101.

According to the refrigerator 100 of Embodiment 1, the curvature radii R of the first chamfered portion 41a, the second chamfered portion 41b, the third chamfered portion 41c, and the fourth chamfered portion 41d are gradually changed from the front surface of the refrigerator 100 toward the refrigerator main body rear surface 101b of the refrigerator 100 so that the curvature radius R increases. As a result, when the mold is removed after molding the inner box 9, the gap between the inner box 9 and the mold can be easily widened, and there is an effect of improving the releasability of the inner box 9 from the mold.

In the first embodiment, the first draft L1 is provided in the first area 60 of the inner box left side plate 21 (left side 21a) of the inner box 9, and the first draft L1 is provided in the first area 60 of the inner box right side plate 22 (right side 22a). A second draft L2 is provided in the second area 61 of the inner box left side plate 21 (left side 21a) of the inner box 9, and a second draft L2 is provided in the second area 61 of the inner box right side plate 22 (right side 22a).

A third draft angle L3 is provided in the third area 62 of the inner box left side plate 21 (right side 22a) of the inner box 9 . A third draft L3 is provided in the third region 62 of the inner box right side plate 22 (right side 22a) of the inner box 9 . A fourth draft L4 is provided in the fourth region 63 of the inner box left side plate 21 (right side 22a) of the inner box 9 . A fourth draft angle L4 is provided in the fourth area 63 of the inner box right side plate 22 (right side 22a) of the inner box 9 .

In addition, the inner box 9 is provided with an inner box corner 25a, an inner box corner 25b, an inner box corner 25c, and an inner box corner 25d whose radius of curvature R gradually changes. In such a case, since air is likely to enter between the inner box 9 and the mold, the releasability of the inner box 9 from the mold after vacuum forming is improved.

In addition, since air can easily enter between the inner box 9 and the foaming jig, the detachability of the inner box 9 and the urethane foaming jig 31 is improved.

Furthermore, even in urethane foaming, the urethane foaming jig 31 can be smoothly inserted and removed. Either one of the above-described gradual changes in the draft angle L of the side surface of the inner box and the radius of curvature R of the inner box corner portion 25 may be used in the refrigerator 100, or the refrigerator 100 may be configured by combining them.

In the inner box 9 according to Embodiment 1, it is possible to suppress food storage volume loss by the draft angle L of the left side 21a and the right side 22a of the inner box 9 of the refrigerator main body 101 of the refrigerator 100 while ensuring productivity. The refrigerator 100 is compared with a refrigerator 100 having an internal volume of 500 L to 550 L and having a draft angle L on four surfaces of a left side 21a, a right side 22a, a ceiling 23a and a bottom 24a. In the refrigerator 100 of Embodiment 1, the side draft angle L is set to 0 at the vertical central portion of the refrigerator body 101, so that the width of the storage compartment can be increased by about 10 mm at the opening. As a result, there is an effect of increasing the food storage space by about 8L.

Embodiment 2.
Embodiment 2 is characterized by the configuration of the inner box corner portion 25 of the inner box 9 .

FIG. 12 is an enlarged view of the second chamfered portion 26b according to the second embodiment. A second chamfered portion 26b, which is a chamfered corner in FIG. In the second embodiment, the same parts as those in FIGS. 1 to 11 explained in the first embodiment are denoted by the same symbols. 12 shows only the second chamfered portion 26b, the first chamfered portion 26a, the third chamfered portion 26c, and the fourth chamfered portion 26d have the same configuration as the second chamfered portion 26b.

In the second embodiment, the shape of the second chamfered portion 26b is made small in order to secure the storage capacity in the refrigerator 100. Wiring 29 for connecting electrical components of refrigerator 100 is arranged on the back side of second chamfered portion 26b. The second chamfered portion 26b has the smallest chamfered size in the range where the wiring 29 fits within the storage space 30 surrounded by the extension line of the back surface 14a indicated by the dashed line in FIG. 12, the extension line of the right side surface 22a indicated by the dashed line in FIG.

If the shape of the second chamfered portion 26b is made too small, there is a concern that the wiring 29 will protrude from the storage space 30, hindering the flow of urethane when filling urethane foam, and causing unfilled urethane. For this reason, the second chamfered portion 26 b has a minimum chamfered shape that prevents the wiring 29 from protruding from the storage space 30 .

FIG. 13 is a schematic diagram of the urethane foaming jig 31 according to Embodiment 2 as seen from the rear side. The urethane foaming jig 31 includes a foaming jig body 32a and a side slide structure 32b. A solid line 201 shown in FIG. 13 is a boundary line between the foaming jig body 32a and the side slide structure 32b when the urethane foaming jig 31 is viewed from the back. A dashed line 202 in FIG. 13 indicates a boundary line between the foam jig body 32a and the side slide structure 32b. A region surrounded by a solid line 201 and a broken line 202 corresponds to the foaming jig guide portion 32c.

FIG. 14 is a diagram showing a state in which the urethane foaming jig 31 is inserted into the inner box 9 according to the second embodiment. FIG. 14 is an enlarged view of the periphery of the second chamfered portion 26b of the refrigerator main body 101 in the AA cross section of FIG. 14 shows a state in which the urethane foaming jig 31 is inserted into the refrigerator main body 101. FIG. FIG. 14 shows the state before or after filling with urethane.

When the urethane foaming jig 31 is inserted into and removed from the refrigerator main body 101, the urethane foaming jig 31 is put in and taken out while the side slide structure 32b is slid toward the center side of the foaming jig main body 32a (the left side of the paper surface of FIG. 14), so that the inner box 9 and the urethane foaming jig 31 are not caught.

However, since the foaming jig guide portion 32c for suppressing deformation of the left and right ends of the back surface 35a of the inner box 9 is provided at the rear end portion of the foaming jig body 32a so as to protrude left and right, the side slide structure 32b cannot be provided to the rear end portion of the foaming jig body 32a.

Therefore, it is necessary to form a chamfered portion 26b on the inner box 9 and provide a guide shape so that the urethane foaming jig 31 and the inner box 9 do not get caught. A chamfered portion 26b is provided on the innermost side of the chamber for housing the wiring 29, and this portion serves as a guide shape.

FIG. 10 is a diagram showing the state of the urethane foaming jig 31 before or after filling the inner box 9 with urethane according to Embodiment 2. FIG. FIG. 15 shows a state where the attachment of the urethane foaming jig 31 is completed and the inside of the refrigerator main body 101 is filled with urethane foam at the same AA section as in FIG.

FIG. 15 shows a state in which, after the urethane foaming jig 31 is inserted into the storage space 50a of the main body, the side slide structure 32b is moved outward from the center of the refrigerator body 101 (to the right of the paper surface of FIG. 15), and the right side 22a of the inner box 9 is held down by the side slide structure 32b.

With such a configuration, while suppressing contact between the side surface of the inner box 9 and the urethane foaming jig 31 when the urethane foaming jig 31 is inserted and pulled out, the side slide structure 32b can suppress deformation of the side surface of the inner box 9 due to the urethane foaming pressure during filling of the urethane foam.

FIG. 16 is a perspective view showing the interior of the refrigerator compartment 1 according to Embodiment 2. FIG. A side surface of the inner box 9 is provided with a shelf supporting portion 34 for supporting a shelf on which food is placed. The shelf support 34 is below the uppermost shelf support 34 .

In the second embodiment, a urethane foam jig guide portion 33 is provided behind the shelf support portion 34 by connecting with the shelf support portion 34 on the right side surface 22a where the shelf support portion 34 is provided. The urethane foam jig guide portion 33 is provided between the shelf support portion 34 and the inner box back plate 35 . The urethane foaming jig guide portion 33 has an upper inclined surface 33_a, a lower inclined surface 33_c, and an inclined surface 33_b on a side surface continuous with the upper inclined surface 33_a and the lower inclined surface 33_c. The inclined surfaces 33_a, 33_b, and 33_c of the urethane foaming jig guide portion 33 widen in surface area toward the rear. Since the surface areas of the inclined surfaces 33_a, 33_b, and 33_c increase rearward, the inclined surface 33_a is inclined upward from the front to the rear, the inclined surface 33_b is inclined from right to left from the front to the rear, and the inclined surface 33_c is inclined downward from the front to the rear. The side surface of the urethane foam jig guide portion 33 is formed continuously with the inner box ceiling plate 23 .

FIG. 4 is an enlarged view of a part of the DD cross section passing through the shelf support portion 34 of FIG. 3 according to Embodiment 2. FIG. FIG. 17 shows a state in which the urethane foaming jig 31 is inserted into the refrigerator compartment 1 and the side slide structure 32b is accommodated in the foaming jig main body 32a.

In the configuration of FIG. 17, the urethane foaming jig guide part 33 inclined with respect to the right side surface 22a of the inner box 9 is provided on the far side (rear) of the shelf support part 34 so as to be continuous with the back surface 35a of the inner box 9.

The foaming jig guide portion 32c is provided on the side surface of the foaming jig body 32a so as to protrude left and right along the back surface of the foaming jig body 32a.

The foaming jig guide portion 32c is in contact with the back surface 35a provided in the inner box 9 and the inclined surface 33_b of the urethane foaming jig guide portion 33. The foam jig guide portion 32c and the shelf support portion 34 are spaced apart in the left-right direction. With this configuration, it is possible to prevent the foaming jig guide portion 32c, which is a protrusion, from coming into contact with the shelf support portion 34 of the inner box 9 when the urethane foaming jig 31 is inserted or removed.

FIG. 18 is a diagram of a comparative example in which a part of the same DD cross section as that of FIG.

In FIG. 18, the chamfered area of the corner formed by the shelf support 34 and the back surface 35a of the inner box 9 in the DD cross section passing through the shelf support 34 is set small in order to increase the internal volume of the storage compartment.

Therefore, if there is no urethane foaming jig guide portion 33 continuous to the back surface 35a of the inner box 9 on the inner side of the chamber, and the shelf support portions 34 are provided in parallel on the left and right sides, the foaming jig guide portion 32c, which is a protrusion provided on the urethane foaming jig 31, contacts the shelf support portion 34 in a vertical plane. Therefore, when the urethane foaming jig 31 is inserted and pulled out, the foaming jig guide portion 32c and the shelf support portion 34 are caught.

In the second embodiment, behind the shelf support part 34, a urethane foam jig guide part 33 having inclined surfaces 33_a, 33_b, and 33_c continuous with the shelf support part 34 and the back surface 35a is provided. As a result, the chamfered portion 26 at the corner between the rear surface 35a and the side surface of the storage chamber can be reduced while avoiding the foaming jig guide portion 32c and the shelf support portion 34 from being caught. Therefore, the internal volume of the storage chamber is increased, and the manufacturability at the time of insertion and extraction of the urethane foaming jig 31 can be improved.

The embodiments are presented as examples and are not intended to limit the scope of claims. Embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the gist of the embodiments. These embodiments and variations thereof are included within the scope and spirit of the embodiments.

1 refrigerator compartment, 1a refrigerator left door, 1b refrigerator right door, 2 icemaker, 2a icemaker door, 3 small freezer, 3a small freezer door, 4 freezer, 4a freezer door, 5 vegetable compartment, 5a vegetable compartment door, 6 refrigerator left door, 7 refrigerator right door, 8 outer box, 9 inner box, 10, 11, 12, 13 partition, 14 outside Box rear plate, 14a Rear surface, 15a, 15b, 15c, 15d Inlet, 16 Rear vacuum insulation material, 17 Ceiling vacuum insulation material, 18 Floor vacuum insulation material, 19 Side vacuum insulation material, 20 Door rail part, 21 Inner box left side panel, 21a Left side panel, 22 Inner box right side panel, 22a Right side surface, 23 Inner box ceiling panel, 23a Ceiling surface, 24 Inner box bottom panel , 24a bottom surface, 25, 25a, 25b, 25c, 25d inner box corners, 25b_1 refrigerator main body 101 front surface, 25b_2 refrigerator main body 101 rear surface, 26 chamfered portion, 26a first chamfered portion, 26b second chamfered portion, 26c third chamfered portion, 26d fourth chamfered portion, 26b_1 refrigerator front surface, 26b_2 refrigerator back, 29 wiring, 30 wiring storage space, 31 urethane foaming jig, 32a foaming jig body, 32b side slide structure, 32c foaming jig guide portion, 33 urethane foaming jig guide portion, 33_a, 33_b, 33_c inclined surface, 34 shelf support portion, 35 inner box rear plate, 35a back surface, 41 chamfered portion, 50 heat insulation box body, 50a storage space, 60 First region, 61 Second region, 62 Third region, 63 Fourth region, 64 Fifth region, 100 Refrigerator, 101 Refrigerator main body, 101a Refrigerator main body front surface, 101b Refrigerator main body rear surface, 101c Refrigerator main body left side surface, 101d Refrigerator main body right side surface, 101e Refrigerator main body ceiling surface, 101f Refrigerator main body bottom surface, 201 Solid line, 202 Broken line, L Draft angle, L1 First draft angle, L2 Second draft angle, L3 Third draft angle, L4 Fourth draft angle, R, R1, R2 Curvature radius, r Urethane flow path.

Claims

an outer box forming the outer surface of the refrigerator body;
an inner box provided in the outer box and having an inner box ceiling plate, an inner box left side plate, an inner box right side plate, an inner box rear plate and an inner box bottom plate that form a storage space;
and a partition that partitions the storage space into a plurality of storage chambers,
In the uppermost first storage room among the plurality of storage compartments, a first draft angle is provided in a first region from the inner box ceiling plate to a predetermined height, in the inner box left side plate and the inner box right side plate when viewed in a cross section parallel to the bottom surface of the refrigerator body, so that the distance between the inner box left side plate and the inner box right side plate increases toward the front side of the inner box.
In the first storage chamber, a second draft angle is provided on the inner box left side plate and the inner box right side plate when viewed in a cross section parallel to the bottom surface of the refrigerator body in a second area below the first area,
the second draft angle is less than the first draft angle;
refrigerator.
2. The refrigerator according to claim 1, wherein said first storage compartment has a region below said second region in which said inner box left side plate and said inner box right side plate are parallel.
an outer box forming the outer surface of the refrigerator body;
an inner box provided in the outer box and having an inner box ceiling plate, an inner box left side plate, an inner box right side plate, an inner box rear plate and an inner box bottom plate that form a storage space;
and a partition that partitions the storage space into a plurality of storage chambers,
In the second storage compartment, which is the lowest among the plurality of storage compartments, a third draft angle is provided in a third region from the inner box bottom plate to a predetermined height so that the distance between the inner box left side plate and the inner box right side plate increases toward the front side of the inner box, in a cross section parallel to the bottom surface of the refrigerator body, on the inner box left side plate and the inner box right side plate.
In the second storage room, in a fourth region above the third region, a fourth draft angle is provided on the inner box left side plate and the inner box right side plate when viewed in a cross section parallel to the bottom surface of the refrigerator body,
the fourth draft angle is less than the third draft angle;
refrigerator.
4. The refrigerator according to claim 3, wherein said second storage compartment has a region above said fourth region in which said inner box left side plate and said inner box right side plate are parallel.
The inner box is
a first chamfered portion continuous with the inner box ceiling plate and the inner box left side plate;
a second chamfered portion continuous with the inner box ceiling plate and the inner box right side plate;
a third chamfered portion continuous with the inner box ceiling plate and the inner box left side plate;
a fourth chamfered portion continuous with the inner box ceiling plate and the inner box right side plate;
At least one of the set of the first chamfered portion and the second chamfered portion and the set of the third chamfered portion and the fourth chamfered portion is chamfered so that the radius of curvature gradually expands from the front to the rear of the refrigerator body.
The refrigerator according to any one of claims 1-4.
a shelf support provided on the inner box left side plate and the inner box right side plate;
a guide portion provided between the shelf support portion and the inner box rear plate,
The guide part has an upper surface, a lower surface, and a side surface continuous with the upper surface and the lower surface, each having a shape that widens rearward, and the side surface of the guide part is formed continuously with the inner box ceiling plate.
The refrigerator according to any one of claims 1-5.
7. The refrigerator according to any one of claims 1 to 6, further comprising a heat insulating material provided between said outer case and said inner case.
The heat insulating material is a vacuum heat insulating material,
The distance between the inner box and the vacuum insulation material is 3 mm or more,
The refrigerator according to claim 7.