Refrigerator

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

Technical Field

[0001] The present disclosure relates to a refrigerator having an outer box and an inner box.

Background Art

[0002] Conventionally, there has been a refrigerator body formed by providing an inner box made of synthetic resin and an outer box made of steel plate, and filling a 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. After vacuum forming, since it is necessary to remove the inner box from the mold, a so-called draft is provided on the wall surface of the inner box. However, providing a draft on the wall surface of the inner box leads to a reduction in the storage volume of the storage space of the refrigerator body.

[0003] A technique has been disclosed in which each wall of the refrigerator body is constituted by separate parts, the refrigerator body is formed by joining the respective surfaces, and the draft required when forming the inner box is eliminated, thereby increasing the storage capacity of the storage space of the refrigerator (see Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the technique of Patent Document 1, since each wall of the refrigerator body is constituted by separate parts, the number of parts is large, the assembly man-hours at the time of manufacture are large, and there is a problem that the material cost and the manufacturing cost are larger than those of a general refrigerator.

[0006] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a refrigerator having a large storage capacity while suppressing the number of parts and the manufacturing cost.

Means for Solving the Problem

[0007] The refrigerator according to the present disclosure includes an outer box constituting 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 back 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 rooms. , a plurality of shelf support portions provided on the left side panel and the right side panel of the inner box The inner box has 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 bottom plate and the inner box left side plate, and a fourth chamfered portion continuous with the inner box bottom plate and the inner box right side plate. At least one of a set of the first chamfered portion and the second chamfered portion and a set of the third chamfered portion and the fourth chamfered portion is chamfered such that the radius of curvature gradually increases from the front to the back of the refrigerator body. Among the plurality of storage chambers, in the uppermost first storage chamber, in a first region from the ceiling plate of the inner box to the uppermost shelf support portion, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, on the left side panel and the right side panel of the inner box, a first slope is provided so that the distance between the left side panel and the right side panel of the inner box widens toward the front side of the inner box. In the first storage chamber, in a region below the first region, that is, in a second region from the uppermost shelf support portion to the partition provided below the first storage chamber, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, a second slope is provided on the left side panel and the right side panel of the inner box. The second slope is provided over the entire height of the second region and is smaller than the first slope 。

Advantages of the Invention

[0008] According to the present disclosure, in the first storage room, in a first region, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, a first slope is provided on the inner box left side plate and the inner box right side plate such that the distance between the inner box left side plate and the inner box right side plate widens toward the front side of the inner box. Also, in the first storage room, in a second region below the first region, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, a second slope is provided on the inner box left side plate and the inner box right side plate. And the second slope is smaller than the first slope. Therefore, when removing the mold after forming the inner box, it is easy to widen the gap between the inner box and the mold, and the demolding property of the inner box can be improved. As a result, a refrigerator with a large storage capacity can be provided while suppressing component and manufacturing costs.

Brief Description of the Drawings

[0009]

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Mode for Carrying Out the Invention

[0010] Hereinafter, with reference to the drawings, the refrigerator according to the embodiment will be described. In the drawings, the same reference numerals are given to the same components and described, and duplicate descriptions are made only when necessary. The present disclosure may include any combination of components that can be combined among the configurations described in the following embodiments. Also, in the drawings, the relationship of the sizes of the respective components may be different from the actual ones. And the forms of the components represented throughout the specification are merely examples and are not limited to the forms described in the specification. In particular, the combination of components is not limited to only the combinations in each embodiment, and the components described in other embodiments can be applied to other embodiments. Also, in the following embodiments, for components provided in plurality, they may be distinguished from each other by adding numbers or the like to the end of the reference numerals of the components. However, when a plurality of such components are described together, or when one of the components is described as a representative, the description may be made without adding numbers or the like. In the drawings of the cross-sectional views, hatching is appropriately omitted in consideration of visibility.

[0011] In the following description, for the sake of easy understanding, terms indicating directions (such as "up", "down", "right", "left", "front", "rear", etc.) are used as appropriate, but these are for the purpose of explanation and do not limit the present embodiment. Also, in each drawing, the relative dimensional relationships or shapes of the respective components may be different from the actual ones.

[0012] Embodiment 1. FIG. 1 is a front view of the refrigerator 100 according to Embodiment 1. FIG. 2 is a perspective view of the refrigerator 100 according to Embodiment 1.

[0013] In Embodiment 1 and Embodiment 2, the 6-door refrigerator 100 will be described as an example, but Embodiment 1 and Embodiment 2 can also be applied to refrigerators 100 with 5 doors or less and 7 doors or more.

[0014] As shown in FIGS. 1 and 2, the refrigerator 100 according to Embodiment 1 includes a refrigerator main body 101 that constitutes an outer shell, and the refrigerator main body 101 has a storage space 50a (see FIG. 3) inside. As shown in FIG. 3 described later, the storage space 50a is partitioned into a plurality of storage chambers by a plurality of partitions 10, 11, 12, and 13 provided in the refrigerator main body 101.

[0015] The plurality of storage chambers are a refrigerating chamber 1, an ice-making chamber 2, a small freezing chamber 3, a freezing chamber 4, and a vegetable chamber 5. The refrigerating chamber 1 is provided at the uppermost stage of the refrigerator 100, and the front opening is closably closed by two double-leaf swing doors, a left refrigerating chamber door 1a and a right refrigerating chamber door 1b. The refrigerator 100 includes an ice-making chamber door 2a, a small freezing chamber door 3a, a freezing chamber door 4a, and a vegetable chamber door 5a.

[0016] Below the refrigerating chamber 1, there are arranged in parallel an ice-making chamber 2 whose storage chamber is pulled out to the user side when the ice-making chamber door 2a is pulled out, and a small freezing chamber 3 whose storage chamber is pulled out to the user side when the small freezing chamber door 3a is pulled out.

[0017] At the lowermost stage of the refrigerator 100, there is provided a vegetable chamber 5 whose storage chamber is pulled out to the user side when the vegetable chamber door 5a is pulled out. Above the vegetable chamber 5, there is provided a freezing chamber 4 whose storage chamber is pulled out to the user side when the freezing chamber door 4a is pulled out. The freezing chamber 4 is provided below the ice-making chamber 2 and the small freezing chamber 3 arranged in parallel on the left and right, and above the vegetable chamber 5. Note that the arrangement of the plurality of storage chambers, namely, the refrigerating chamber 1, the ice-making chamber 2, the small freezing chamber 3, the freezing chamber 4, and the vegetable chamber 5, is not limited to those described in Embodiment 1 and Embodiment 2.

[0018] In FIG. 2, 101a indicates the front surface of the refrigerator main body. 101b indicates the rear surface of the refrigerator main body. 101c indicates the left side surface of the refrigerator main body. 101d indicates the right side surface of the refrigerator main body. 101e indicates the ceiling surface of the refrigerator main body. 101f indicates the bottom surface of the refrigerator main body. The refrigerator main body 101 includes an inner box 9 (see FIG. 3), an outer box 8 (see FIG. 3) that constitutes the outer side surface of the refrigerator main body 101, a heat-insulating box body 50 formed by the inner box 9 and the outer box 8, and urethane foam filled in the space formed between the inner box 9 and the outer box 8.

[0019] FIG. 3 is a front view of the refrigerator main body 101 according to Embodiment 1. The refrigerator main body 101 (heat insulation box body 50) has an opening of the storage space 50a on the front surface. The storage space 50a of the refrigerator main body 101 is partitioned into a plurality of storage chambers by partitions 10, 11, 12, and 13. The refrigerating chamber 1, the ice making chamber 2, and the small freezing chamber 3 are thermally partitioned by the partition 10. The ice making chamber 2 and the small freezing chamber 3 are thermally partitioned by the partition 11. The ice making chamber 2 and the small freezing chamber 3 and the freezing chamber 4 are thermally partitioned by the partition 12. The freezing chamber 4 and the vegetable chamber 5 are thermally partitioned by the partition 13.

[0020] The first region 60 is a region from the inner box ceiling plate 23 to a predetermined height in the refrigerating chamber 1 which is the uppermost first storage chamber among the plurality of storage chambers. In Embodiment 1, the first region 60 is, for example, an upper region of the refrigerator main body 101 from the ceiling surface 23a shown in FIG. 3 to the uppermost shelf support portion 34 where generally food is not easily placed. The second region 61 is a region below the first region 60 in the refrigerating chamber 1 which is the first storage chamber. The third region 62 is a region from the inner box bottom plate 24 to a predetermined height in the vegetable chamber 5 which is the lowermost second storage chamber among the plurality of storage chambers. In Embodiment 1, the third region 62 is, for example, a lower region of the refrigerator main body 101 from the door rail portion 20 to the bottom surface 24a. The fourth region 63 is a region above the region of the third region 62 in the vegetable chamber 5 which is the second storage chamber. The fifth region 64 is a region of the ice making chamber 2, the small freezing chamber 3, and the freezing chamber 4 provided between the refrigerating chamber 1 and the vegetable chamber 5.

[0021] In Embodiment 1, the first storage chamber and the second storage chamber are arranged above and below with the ice making chamber 2, the small freezer chamber 3, and the freezer chamber 4 in between, but the configuration of the arrangement of the storage chambers of the refrigerator 100 is not limited to this. For example, the refrigerator 100 may have a configuration including only the first storage chamber and the second storage chamber. In this case, the first storage chamber includes a first region 60 and a second region 61 in order from above, and the second storage chamber includes a fourth region 63 and a third region 62 in order from above. Further, 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.

[0022] 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 back plate 35, and an inner box bottom plate 24 that form a storage space 50a.

[0023] The inner box corner 25a is the upper left corner of the inner box 9. The inner box corner 25b is the upper right corner of the inner box 9. The inner box corner 25c is the lower left corner of the inner box 9. The inner box corner 25d is the lower right corner of the inner box 9.

[0024] The shelf support portion 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.

[0025] FIG. 4 is a rear view of the refrigerator body 101 according to Embodiment 1. FIG. 5 is a right side view of the refrigerator body 101 according to Embodiment 1.

[0026] As shown in FIG. 4, on the refrigerator body rear surface 101b of the refrigerator body 101, injection ports 15a, 15b, 15c, and 15d for injecting urethane foam between the inner box 9 and the outer box 8 are provided.

[0027] As shown by the dashed line in FIG. 4, in order to improve the heat insulation performance of the refrigerator 100, a rear vacuum insulation material 16 is disposed between the inner box 9 and the outer box back panel 14 of the outer box 8. The ratio of the projected area of the vacuum insulation material to the projected area of the product is called the coverage rate. Generally, the higher the coverage rate of the vacuum insulation material on each surface of the refrigerator body 101, the better the heat insulation performance of the refrigerator 100.

[0028] In the rear view of FIG. 4, the rear vacuum insulation material 16 has its corners chamfered so as to ensure a coverage rate with respect to the refrigerator body rear surface 101b of the refrigerator body 101. The inlets 15a, 15b, 15c, and 15d are respectively provided outside the four chamfered shapes of the rear vacuum insulation material 16 of the outer box back panel 14 when viewing the refrigerator body rear surface 101b of the refrigerator body 101 from the front.

[0029] On the ceiling surface 101e of the refrigerator body, a ceiling vacuum insulation material 17 with high heat insulation performance is disposed between the inner box 9 and the outer box 8. On the bottom surface 101f of the refrigerator body, a floor vacuum insulation material 18 with high heat insulation performance is disposed between the inner box 9 and the outer box 8. Although not shown, a side vacuum insulation material 19 with high heat insulation performance is also disposed between the left side surface 21a and the left side surface 101c of the outer box 8, similar to the refrigerator body rear surface 101b.

[0030] As shown in FIG. 5, on the right side surface 101d of the refrigerator body, a side vacuum insulation material 19 with high heat insulation performance is also disposed between the inner box 9 and the outer box 8, similar to the refrigerator body rear surface 101b.

[0031] In the process of filling the refrigerator body 101 with urethane foam, it is carried out with the front surface of the refrigerator body 101 where the opening is formed facing downward. In this state, a liquid urethane foam material is filled from four injection ports 15a, 15b, 15c, and 15d formed in the outer box back panel 14 of the outer box 8 that forms the back surface of the refrigerator body 101. The urethane foam material is filled while foaming the flow path between the inner box 9 and the outer box 8 by mixing and reacting an isocyanate component and a premix component composed of a polyol, a foaming agent, a catalyst, and a blowing agent. The gel time during foaming is set to less than 25 seconds, and the foaming ratio at the time of reaching the gel time is set to about 80%. The gel time is the time from when the urethane foam is injected until it hardens. By setting it like this, while ensuring the fluidity required for filling, hardening is completed at the end of filling, and it becomes a formulation in which leakage from the product gap is less likely to occur.

[0032] As a flow path for sufficiently filling the heat insulation box body 50 with urethane foam, it is desirable to ensure a dimension of 3 mm or more between the inner box 9 and the back surface vacuum heat insulation material 16, the ceiling vacuum heat insulation material 17, the floor surface vacuum heat insulation material 18, and the side surface vacuum heat insulation material 19.

[0033] FIG. 6 is a cross-sectional view taken along line A-A of the refrigerator body 101 shown in FIG. 3 according to Embodiment 1. The cross-section along line A-A is a cross-section parallel to the bottom surface 101f of the refrigerator body, which is the lower surface of the outer box 8 of the refrigerator body 101. FIG. 6 is a cross-section in the second region 61 (see FIG. 3), which is a region below the first region 60 (see FIG. 3) in the refrigerating chamber 1, and shows a cross-section at a position below the uppermost shelf support portion 34 (see FIG. 3).

[0034] As shown in FIG. 6, in the refrigerating chamber 1, which is the first storage chamber, in the second region 61 below the first region 60, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the left side panel 21 of the inner box, toward the front side of the inner box 9 Right side panel 22 of the inner box a second slope L2 is provided so that the distance between them widens. Also, in the refrigerating chamber 1, which is the first storage chamber, in the second region 61 below the first region 60, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the right side panel 22 of the inner box, toward the front side of the inner box 9 Left side panel 21 of the inner box A second stepped gradient L2 is provided so that the distance therebetween widens. The gradient of the second stepped gradient L2 includes 0°.

[0035] The left inner box panel 21 (left side surface 21a) and the right inner box panel 22 (right side surface 22a) of the inner box 9 are provided substantially parallel to each other. The left inner box panel 21 and the right inner box panel 22 are Approximately perpendicular to the rear inner box panel 35 of the inner box 9 and Approximately are provided at an angle parallel to the front-rear direction of the refrigerator body 101.

[0036] In Embodiment 1, in the refrigerator body 101, the region where the left inner box panel 21 and the right inner box panel 22 are provided substantially parallel to each other is provided from the uppermost shelf support portion 34 to between the door rail portions 20 that support the frame of the vegetable chamber door 5a, which is the lowermost storage chamber. In the first storage chamber, below the second region 61, a region where the left inner box panel 21 and the right inner box panel 22 are Approximately parallel is provided. Thus, by making the left inner box panel 21 and the right inner box panel 22 of the inner box 9 substantially parallel to each other, the storage volume inside the refrigerator 100 can be improved within the determined outer dimensions.

[0037] Note that "substantially parallel" may include not only the case of being exactly parallel but also the case where the deviation from parallel is less than 0.1°. The same Vertical applies to this as well.

[0038] Also, the region where the left inner box panel 21 and the right inner box panel 22 are provided substantially parallel to each other does not have to be the entire region from the uppermost stage of the shelf support portion 34 to the door rail portion 20. The left inner box panel 21 and the right inner box panel 22 may be provided substantially parallel to each other in at least a part of the region from the uppermost stage of the shelf support portion 34 to the door rail portion 20b.

[0039] The first chamfered portion 26a at the rear left inner part of the inner box 9 1 is the corner formed by the left side surface 21a of the inner box 9 and the rear surface 35a of the inner box 9, and is a chamfered corner. The second chamfered portion 26b at the rear right inner part of the inner box 9 1is a chamfered corner formed by the right side surface 22a and the rear surface 35a of the inner box 9.

[0040] The first chamfered portion 26a 1 is , the back panel 35 of the inner box continuous with the left side panel 21 of the inner box. The second chamfered portion 26b 1 is Back panel 35 of the inner box continuous with the right side panel 22 of the inner box.

[0041] FIG. 7 is a cross-sectional view taken along line B-B of the refrigerator main body 101 shown in FIG. 3 according to Embodiment 1. The B-B plane 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 of the refrigerating chamber 1 from the ceiling surface 23a to a predetermined height. As an example, the first region 60 is a region between the ceiling surface 23a of the refrigerating chamber 1 and the uppermost shelf support portion 34.

[0042] As shown in FIG. 7, in the refrigerating chamber 1 which is the uppermost first storage chamber, in the first region 60 from the inner box ceiling plate 23 (see FIG. 3) to a predetermined height, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator main body, on the left side panel 21 of the inner box, toward the front side of the inner box 9 Right side panel 22 of the inner box a first slope L1 is provided so that the distance between them widens. Also, in the refrigerating chamber 1 which is the uppermost first storage chamber, in the first region 60 from the inner box ceiling plate 23 (see FIG. 3) to a predetermined height, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator main body, on the right side panel 22 of the inner box, toward the front side of the inner box 9 Left side panel 21 of the inner box a first slope L1 is provided so that the distance between them widens. The second slope L2 is smaller than the first slope L1.

[0043] The third chamfered portion 26c 1 is , Back panel 35 of the inner box is continuous with the left side panel 21 of the inner box. The fourth chamfered portion 26d 1 is Back panel 35 of the inner box continuous with the right side panel 22 of the inner box.

[0044] Next, the first region 60 where the first slope L1 and the second slope L2 are provided in the refrigerating chamber 1 And the second region 61 This will be described. From the ceiling surface 23a of the inner box 9 to a predetermined height, a first slope L1 of approximately 1° is provided on each of the left side surface 21a and the right side surface 22a at an angle perpendicular to the back surface 35a. The predetermined height is, for example, approximately 30 mm below the end of the R surface of the inner box corner 25a and the inner box corner 25b. Then, from the upper end of the uppermost shelf support portion 34 to the upper end, the first slope L1 is continuously changed to 0°, and in the second region 61 below the uppermost shelf support portion 34, the second slope L2 is 0°.

[0045] A third region 62 where a third slope L3 and a fourth slope L4 are provided in the vegetable compartment 5 which is the second storage compartment And the fourth region 63 This will be described. FIG. 8 is a cross-sectional view of the lower surface of the outer box 8 of the vegetable compartment 5 according to Embodiment 1 Bottom surface 101f of the refrigerator body in a cross-section parallel to Fourth region 63 of it. FIG. 9 is a cross-sectional view of the lower surface of the outer box 8 of the vegetable compartment 5 according to Embodiment 1 Bottom surface 101f of the refrigerator body in a cross-section parallel to Third region 62 of it.

[0046] As shown in FIG. 8, in the vegetable compartment 5 which is the second storage compartment, in the fourth region 63 from the inner box bottom plate 24 to a predetermined height, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the inner box left side plate 21, towards the front side of the inner box 9 Right side panel 22 of the inner box a fourth slope L4 is provided so that the distance between them widens. Also, in the vegetable compartment 5 which is the second storage compartment, in the fourth region 63 from the inner box bottom plate 24 to a predetermined height, when viewed in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the inner box right side plate 22, towards the front side of the inner box 9 Left side panel 21 of the inner box a fourth slope L4 is provided so that the distance between them widens. The slope of the fourth slope L4 includes 0°. The fourth region 63 is above the third region 62.

[0047] The chamfered portion 26a in the fourth region 63 5 is 2 continuous with the box back plate 35 and the inner box left side plate 21. The chamfered portion 26b , inner is 6 continuous with the box back plate 35 and the inner box right side plate 22. 2 is , inner continuous with the box back plate 35 and the inner box right side plate 22.

[0048] As shown in FIG. 9, in the vegetable compartment 5 which is the second storage compartment, in the third region 62 below the fourth region 63, in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the left side panel 21 of the inner box, toward the front side of the inner box 9 Right side panel 22 of the inner box a third slope L3 is provided so that the distance from the inner box 9 increases. Also, in the vegetable compartment 5 which is the second storage compartment, in the third region 62 below the fourth region 63, in a cross-section parallel to the bottom surface 101f of the refrigerator body, on the right side panel 22 of the inner box, toward the front side of the inner box 9 Left side panel 21 of the inner box a third slope L3 is provided so that the distance from the inner box 9 increases. The fourth slope L4 is smaller than the third slope L3.

[0049] In the second storage compartment, above the fourth region 63, a region where the left side panel 21 of the inner box and the right side panel 22 of the inner box are parallel is provided.

[0050] In the third region 62 7 the chamfered portion 26c 2 is continuous with the back panel 35 of the inner box and the left side panel 21 of the inner box. The 8 chamfered portion 26d 2 is Back panel 35 of the inner box continuous with the right side panel 22 of the inner box.

[0051] A third slope L3 of approximately 1° is provided on the left side surface 21a and the right side surface 22a respectively from the inner box bottom panel 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 25c and the inner box corner 25d.

[0052] Then, from the predetermined height to the lower end of the rail portion of the vegetable compartment door 5a, the third slope L3 of the left side surface 21a and the right side surface 22a is continuously changed to 0°, and in the fourth region 63 above the rail portion of the vegetable compartment door 5a, the fourth slope L4 is 0°.

[0053] However, the above does not apply to the vertical widths of the left side surface 21a and the right side surface 22a that continuously change the third slope L3 to 0°. The heights of the first region 60 and the third region 62 are also not subject to the above. Further, the case where no R surface is provided at the inner box corner 25 is also included in the first embodiment and the second embodiment.

[0054] The ice making chamber 2, the small freezer 3, and the freezer 4 provided between the refrigerator compartment 1 and the vegetable compartment 5 correspond to the fifth region 64. In the fifth region 64, the slope 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 lower region of the first region 60 and the second region 61 and the upper region of the third region 62 and the fourth region 63, the left side surface 21a and the right side surface 22a are parallel.

[0055] According to the refrigerator 100 of the first embodiment, the second slope L2 is smaller than the first slope L1. Therefore, the storage volume inside the refrigerator 100 of the first embodiment can be improved compared to the refrigerator 100 configured to provide the slope L between 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. Predetermined The storage volume inside the refrigerator 100 of the first embodiment can be improved compared to the refrigerator 100 configured to provide the slope L between 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.

[0056] FIG. 10 is a cross-sectional view taken along the line C-C 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 providing the slope L such that the distance between the inner box ceiling plate 23 and the inner box bottom plate 24 increases toward the opening surface.

[0057] 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 main body 101. 。 Outside 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, 5 Region 6 4 is configured without providing the slope L from an angle perpendicular to the outer box back plate 14 of the refrigerator main body 101. With such a configuration, the storage volume inside the refrigerator 100 can be secured within the determined external dimensions.

[0058] In Embodiment 1, the space around the left side surface 21a and the right side surface 22a of the storage chamber in the first region 60 and the space around the left side surface 21a and the right side surface 22a of the storage chamber in the third region 62 are utilized to provide a draft L on the inner box left side panel 21 and the inner box right side panel 22. Thereby, while maintaining the storage performance of the refrigerator 100, the mold release property from the mold of the inner box 9 can be ensured.

[0059] In the first region 60 and the third region 62 The reason for providing the draft L on the inner box left side panel 21 and the inner box right side panel 22 respectively will be described. The inner box 9 is formed by vacuum forming. A film made of resin is used as the forming material. The heated film is placed on the mold, the space between the film and the mold is made into a vacuum state, the film is adsorbed to the mold (forming die), the film is processed (formed) by the mold, and the inner box 9 is manufactured.

[0060] After the inner box 9 is formed by vacuum forming, it is necessary to remove (release the mold) the inner box 9 from the mold. When removing the inner box 9 from the mold after forming, air is sent into the inside of the inner box 9 to expand the inner box 9 in order to assist mold release. Then, the back surface 35a of the inner box 9 is pushed from the inside by the pins provided on the mold, and the inner box 9 is removed from the mold. At this time, the peripheries of the inner box corners 25a, 25b, 25c, and 25d at the four corners of the inner box 9 are harder to deform compared to the flat portions at the centers of the side surfaces, upper surface, and bottom surface of the outer box 8 and the inner box 9.

[0061] As shown in FIGS. 3 and 7, a first draft L1 is provided on the side surface of the inner box 9 between the ceiling surface 23a and the floor surface 24a of the refrigerator compartment 1 in the vicinity of the inner box corners 25a and 25b up to a predetermined height. Also, a third draft L3 is provided on the side surface of the inner box 9 between the bottom surface 24a of the vegetable compartment 5 in the vicinity of the inner box corners 25c and 25d up to a predetermined height. Thereby, even if the draft L is not provided on other portions of the inner box 9, it is possible to ensure the mold release property necessary for production.

[0062] Specifically, the extraction gradient L is provided between the ceiling surface 23a of the refrigerator compartment 1 and the uppermost shelf support portion 34, and between the bottom surface 24a of the inner box 9 of the vegetable compartment 5 in the lowermost compartment and the door rail portion 20, as shown in FIGS. 3 and 7, or on either one of the above. The extraction gradient L has an extraction gradient L of about 1° in a direction in which the inner box left side panel 21 and the inner box right side panel 22 spread apart from each other from the rear to the front of the refrigerator body 101. The extraction gradient L slopes in a direction of about 1° from an angle perpendicular to the rear surface 35a. This makes it possible to ensure the mold release property of the inner box 9.

[0063] Note that, since the inner box left side panel 21 and the inner box right side panel 22 each have an extraction gradient L of about 1° in a direction in which the distance between them widens, a dimension of 3 mm or more can be ensured between the inner box 9 and the rear vacuum insulation material 16. Also, the left - right width on the rear side of the storage space 50a at the vertical center of the refrigerator body 101 can be widened by about 1 cm compared to a conventional refrigerator. Note that a tolerance of ±1 mm occurs in the left - right frontage width.

[0064] Foamed urethane is filled between the inner box 9 and the outer box 8 to ensure heat insulation performance. However, when the foamed urethane is filled, a large foaming pressure is applied to the refrigerator body 101 of the refrigerator 100. In order to suppress deformation of the outer box 8, the inner box 9, and the partitions 10, 12, and 13 due to the foaming pressure, it is necessary to press the peripheries of the inner box 9, the outer box 8, and the partitions 10, 12, and 13 with a foaming jig without gaps when filling the foamed urethane.

[0065] In Embodiment 1, a part of the inner box left side panel 21 and the inner box right side panel 22 of the inner box 9 is provided with an extraction gradient L of about 1° in a direction in which they spread apart from each other from the rear to the front of the refrigerator body 101. By configuring the inner box 9 in this way, air easily enters between the inner box 9 and the urethane foaming jig 31, so that the foaming jig can be smoothly inserted and removed even in the urethane foaming injection process.

[0066] FIG. 11 shows the inner box corner portion according to Embodiment 1 25b of Of the second chamfered portion 41b It is a perspective view. In Fig. 11, Second chamfered portion 41b only is shown, but First chamfered portion 41a, Third chamfered portion 41c and Fourth chamfered portion 41d also Second chamfered portion adopt the same configuration as 41b.

[0067] As shown in Fig. 11, the radius of curvature R of the second chamfered portion 41b at the inner box corner is from the front surface Side 41b_ 2 of the refrigerator body 101 to the back surface Side 41b_ 1 of the refrigerator body 101 and is formed to gradually increase. The radii of curvature R of the first chamfered portion 41a, the third chamfered portion 41c, and the fourth chamfered portion 41d are configured in the same manner as the second chamfered portion 41b.

[0068] The first Surface chamfered portion 41a is continuous with the inner box ceiling plate 23 and the inner box left side plate 21. The second chamfered portion 41b is continuous with the inner box ceiling plate 23 and the inner box right side plate 22. The third chamfered portion 41c is continuous with the inner box Bottom panel 24 and the inner box left side plate 21. The fourth chamfered portion 41d is continuous with the inner box Bottom panel 24 and the inner box right side plate 22.

[0069] At least one of the pair of the first chamfered portion 41a and the second chamfered portion 41b and the pair of the third chamfered portion 41c and the fourth chamfered portion 41d is chamfered so that the radius of curvature gradually increases from the front to the back of the refrigerator body 101.

[0070] According to the refrigerator 100 of Embodiment 1, the radii of curvature 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 so that the radius of curvature R increases from the front surface of the refrigerator 100 toward the back surface 101b of the refrigerator body of the refrigerator 100. Thereby, when removing the mold after forming the inner box 9, it is easy to widen the gap between the inner box 9 and the mold, and there is an effect of improving the mold release property of the inner box 9.

[0071] In Embodiment 1, a first draft gradient L1 is provided in the first region 60 of the left inner box panel 21 (left side surface 21a) of the inner box 9, and a first draft gradient L1 is provided in the first region 60 of the right inner box panel 22 (right side surface 22a). A second draft gradient L2 is provided in the second region 61 of the left inner box panel 21 (left side surface 21a) of the inner box 9, and a second draft gradient L2 is provided in the second region 61 of the right inner box panel 22 (right side surface 22a).

[0072] A third draft gradient L3 is provided in the third region 62 of the left inner box panel 21 (right side surface 22a) of the inner box 9. A third draft gradient L3 is provided in the third region 62 of the right inner box panel 22 (right side surface 22a) of the inner box 9. A fourth draft gradient L4 is provided in the fourth region 63 of the left inner box panel 21 (right side surface 22a) of the inner box 9. A fourth draft gradient L4 is provided in the fourth region 63 of the right inner box panel 22 (right side surface 22a) of the inner box 9.

[0073] Also, the inner box corner portions 25a (First chamfered portion 41a) , inner box corner portions 25b (Second chamfered portion 41b) , inner box corner portions 25c (Third chamfered portion 41c) and inner box corner portions 25d (Fourth chamfered portion 41d) are provided on the inner box 9. In such a case, since air easily enters between the inner box 9 and the mold, the mold release property when removing the inner box 9 from the mold after vacuum forming is improved.

[0074] Also, since air easily enters between the inner box 9 and the foaming jig, the removability Is is improved between the inner box 9 and the urethane foaming jig 31.

[0075] Furthermore, even in urethane foaming, it becomes possible to smoothly insert and remove the urethane foaming jig 31. The draft gradient L on the side surface of the inner box and the gradual change in the radius of curvature R of the inner box corner portions 25 described above may be used alone in the refrigerator 100, or may be combined to configure the refrigerator 100.

[0076] In the inner box 9 according to Embodiment 1, while ensuring productivity, the draft gradient L To make it different up and down It is possible to suppress the loss of food storage volume. Compare with the refrigerator 100 with a content volume of 500L to 550L class, which has a chamfer L on the four sides of the left side surface 21a, the right side surface 22a, the ceiling surface 23a and the bottom surface 24a. The refrigerator 100 of Embodiment 1 can widen the storage chamber width by about 10 mm at the opening by setting the chamfer L on the side surface to 0 at the central part in the vertical direction of the refrigerator body 101. As a result, there is an effect of increasing the food storage space by about 8L.

[0077] Embodiment 2. Embodiment 2 is characterized by the configuration of the inner box corner 25 of the inner box 9.

[0078] FIG. 12 is an enlarged view of the second chamfered portion 26b according to Embodiment 2. The second chamfered portion 26b, which is the chamfered corner in FIG. 12, connects the right side surface 22a and the back surface 14a of the inner box 9. In Embodiment 2, the same parts as those in FIGS. 1 to 11 described in Embodiment 1 are denoted by the same reference numerals for explanation. Also, in FIG. 12, only the second chamfered portion 26b is shown, but the first chamfered portion 26a, the third chamfered portion 26c, and the fourth chamfered portion 26d also adopt the same configuration as the second chamfered portion 26b.

[0079] In Embodiment 2, in order to secure the storage volume in the refrigerator 100, the shape of the second chamfered portion 26b is made smaller. The second chamfered portion 26b has a wiring 29 connecting the electrical components of the refrigerator 100 arranged on the back surface side of the second chamfered portion 26b. The second chamfered portion 26b has the minimum chamfer size within the range where the wiring 29 fits into the storage space 30 surrounded by the extension line of the back surface 14a shown by the dashed line in FIG. 12, the extension line of the right side surface 22a shown by the dashed line in FIG. 12, and the second chamfered portion 26b.

[0080] 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, which will hinder the flow of urethane during the urethane foam filling and cause non - filling of urethane. Therefore, the second chamfered portion 26b is set to have the minimum chamfer shape such that the wiring 29 does not protrude from the storage space 30.

[0081] FIG. 13 is a schematic view of the urethane foam jig 31 according to Embodiment 2 as viewed from the back side. The urethane foam jig 31 includes a foam jig main body 32a and a side slide structure 32b. The solid line 201 shown in FIG. 13 is the boundary line between the foam jig main body 32a and the side slide structure 32b when the urethane foam jig 31 is viewed from the back. The dashed line 202 in FIG. 13 indicates the boundary line between the foam jig main body 32a and the side slide structure 32b. The region surrounded by the solid line 201 and the dashed line 202 corresponds to the foam jig guide portion 32c.

[0082] FIG. 14 is a view showing a state in which the urethane foam jig 31 is inserted into the inner box 9 according to Embodiment 2. FIG. 14 is an enlarged view of the periphery of the second chamfered portion 26b of the refrigerator main body 101 in the A-A cross section of FIG. 6. FIG. 14 shows a state in which the urethane foam jig 31 is inserted into the refrigerator main body 101. FIG. 14 shows a state before or after filling with urethane.

[0083] When the urethane foam jig 31 is inserted into and removed from the refrigerator main body 101, the side slide structure 32b slides to the center side (the left side of the paper surface in FIG. 14) of the foam jig main body 32a, so that the urethane foam jig 31 can be inserted and removed without getting caught between the inner box 9 and the urethane foam jig 31.

[0084] However, since the foam jig guide portion 32c for suppressing deformation of the left and right ends of the back surface 35a of the inner box 9 protrudes to the left and right at the rear end portion of the foam jig main body 32a, the side slide structure 32b cannot be provided up to the rear end portion of the foam jig main body 32a.

[0085] Therefore, it is necessary to form a chamfered portion 26b on the inner box 9 and provide a guiding shape so that the urethane foam jig 31 and the inner box 9 do not get caught. There is a chamfered portion 26b on the inner side of the storage compartment for storing the wiring 29, and that portion serves as a guiding shape.

[0086] Figure 14 shows It is a figure which shows the state of the urethane foam jig 31 before or after filling the inner box 9 according to Embodiment 2 with urethane. FIG. 15 shows the state where the attachment of the urethane foam jig 31 is completed at the same A-A cross-section location as in FIG. 14, and the inside of the refrigerator body 101 is filled with foamed urethane.

[0087] FIG. 15 shows a state where after inserting the urethane foam jig 31 into the storage space 50a of the main body, the side slide structure 32b is moved to the outside (the right side of the paper surface in FIG. 15) from the center of the refrigerator body 101, and the right side surface 22a of the inner box 9 is pressed by the side slide structure 32b.

[0088] With such a configuration, while suppressing the contact between the side surface of the inner box 9 and the urethane foam jig 31 when the urethane foam jig 31 is inserted and removed, the side slide structure 32b can suppress the deformation of the side surface of the inner box 9 due to the urethane foam pressure during the filling of the foamed urethane.

[0089] FIG. 16 is a perspective view showing the inside of the refrigerating chamber 1 according to Embodiment 2. A shelf support portion 34 for supporting a shelf for placing food is provided on the side surface of the inner box 9. The shelf support portion 34 is below the uppermost shelf support portion 34.

[0090] In Embodiment 2, on the right side surface 22a where the shelf support portion 34 is provided, a urethane foam jig case interior 33 is provided which is connected to the shelf support portion 34 and is behind the shelf support portion 34. The urethane foam jig case interior 33 is provided between the shelf support portion 34 and the inner box back panel 35. The urethane foam jig case interior 33 has an inclined surface 33_a on the upper surface, an inclined surface 33_c on the lower surface, and an inclined surface 33_b on the side surface continuous with the inclined surface 33_a on the upper surface and the inclined surface 33_c on the lower surface. The inclined surfaces 33_a, 33_b, and 33_c of the urethane foam jig case interior 33 have a surface area that expands rearward. By the surface areas of the inclined surfaces 33_a, 33_b, and 33_c expanding rearward, the inclined surface 33_a is inclined upward from the front to the rear, the inclined surface 33_b is inclined from the right to the 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 case interior 33 isBack panel 35 of the inner box It is formed continuously with...

[0091] Figure 17 shows FIG. 17 is an enlarged view of a part of the D-D cross section passing through the shelf support portion 34 of FIG. 3 according to Embodiment 2. FIG. 17 shows a state where the urethane foam jig 31 is inserted into the refrigerator compartment 1 and the side slide structure 32b is housed in the foam jig main body 32a.

[0092] In the configuration of FIG. 17, a urethane foam jig guide portion 33 that is inclined with respect to the right side surface 22a of the inner box 9 is provided on the back side (rear side) of the shelf support portion 34 so as to be continuous with the back surface 35a of the inner box 9.

[0093] The foam jig guide portion 32c is provided on the side surface of the foam jig main body 32a so as to protrude left and right along the back surface of the foam jig main body 32a.

[0094] The foam jig guide portion 32c contacts the back surface 35a provided on the inner box 9 and the inclined surface 33_b of the urethane foam 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 foam jig guide portion 32c, which is a protrusion, from contacting the shelf support portion 34 of the inner box 9 when the urethane foam jig 31 is inserted and removed.

[0095] FIG. 18 is a view of a comparative example in which a part of the same D-D cross section as FIG. 17 is enlarged, and shows a state where the urethane foam jig 31 is inserted into the refrigerator compartment 1 when the urethane foam jig guide portion 33 is not provided on the side surface of the inner box 9.

[0096] In FIG. 18, in order to increase the internal volume of the storage compartment, in the D-D cross section passing through the shelf support portion 34, the area of the chamfered portion at the corner formed by the shelf support portion 34 and the back surface 35a of the inner box 9 is set small.

[0097] Therefore, if there is no urethane foam jig housing part 33 continuous with the back surface 35a of the inner box 9 on the inner back side of the storage, when the shelf support parts 34 are provided parallel to each other left and right, the foam jig guide part 32c, which is a protrusion provided on the urethane foam jig 31, contacts the shelf support part 34 in a vertical plane. For this reason, when the urethane foam jig 31 is inserted and removed, a snag will occur between the foam jig guide part 32c and the shelf support part 34.

[0098] In Embodiment 2, a urethane foam jig housing 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 behind the shelf support part 34. Thereby, while avoiding the snag between the foam jig guide part 32c and the shelf support part 34, the chamfered part 26 at the corner between the back surface 35a and the side surface of the storage chamber can be made smaller. Therefore, the internal volume of the storage chamber is enlarged, and it becomes possible to improve the productivity when the urethane foam jig 31 is inserted and removed.

[0099] The embodiments are presented as examples and are not intended to limit the scope of the claims. The embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the embodiments. These embodiments and their modifications are included in the scope and gist of the embodiments.

Explanation of Reference Numerals

[0100] 1 Refrigerator compartment, 1a Left door of the refrigerator compartment, 1b Right door of the refrigerator compartment, 2 Ice-making compartment, 2a Door of the ice-making compartment, 3 Small freezer compartment, 3a Door of the small freezer compartment, 4 Freezer compartment, 4a Door of the freezer compartment, 5 Vegetable compartment, 5a Door of the vegetable compartment, 6 Left door of the refrigerator compartment, 7 Right door of the refrigerator compartment, 8 Outer box, 9 Inner box, 10, 11, 12, 13 Partition, 14 Back panel of the outer box, 14a Back side, 15a, 15b, 15c, 15d Inlet, 16 Vacuum heat insulation material at the back, 17 Vacuum heat insulation material at the ceiling, 18 Vacuum heat insulation material at the floor, 19 Vacuum heat insulation material at the side, 20 Door rail part, 21 Left side panel of the inner box, 21a Left side, 22 Right side panel of the inner box, 22a Right side, 23 Ceiling panel of the inner box, 23a Ceiling surface, 24 Bottom panel of the inner box, 24a Bottom surface, 25, 25a, 25b, 25c, 25d Corner parts of the inner box, 25b_1 Front surface of the refrigerator body 101, 25b_2 Back surface of the refrigerator body 101, 26 Chamfered part, 26a 、26a1 First chamfered part, 26b 、26b1 Second chamfered part, 26c 、26c1 Third chamfered part, 26d 、26d1 Fourth chamfered part, 26a2 Fifth chamfered portion, 26b2 Sixth chamfered portion, 26c2 Seventh chamfered portion, 26d2 Eighth chamfered portion, 26b_1 Front surface of the refrigerator, 26b_2 Back surface of the refrigerator, 29 Wiring, 30 Wiring storage space, 31 Urethane foam jig, 32a Main body of the foam jig, 32b Side slide structure, 32c Guide part of the foam jig, 33 Guide part for the urethane foam jig, 33_a, 33_b, 33_c Inclined surface, 34 Shelf support part, 35 Back panel of the inner box, 35a Back side, 41a First chamfered portion, 41b Second chamfered portion, 41c Third chamfered portion, 41d Fourth 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 body, 101a Front surface of the refrigerator body, 101b Back surface of the refrigerator body, 101c Left side surface of the refrigerator body, 101d Right side surface of the refrigerator body, 101e Ceiling surface of the refrigerator body, 101f Bottom surface of the refrigerator body, 201 Solid line, 202 Dashed line, L Slope, L1 First slope, L2 Second slope, L3 Third slope, L4 Fourth slope, R, R1, R2 Radius of curvature, r Urethane flow path.

Claims

1. An outer box constituting 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 back plate, and an inner box bottom plate that form a storage space, A partition that divides the storage space into a plurality of storage compartments, A plurality of shelf support portions provided on the inner box left side plate and the inner box right side plate, and comprising, The inner box, 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 bottom plate and the inner box left side plate, A fourth chamfered portion continuous with the inner box bottom plate and the inner box right side plate, having, At least one of a pair of the first chamfered portion and the second chamfered portion and a pair of the third chamfered portion and the fourth chamfered portion is chamfered such that the radius of curvature gradually increases from the front to the rear of the refrigerator body, In the uppermost first storage compartment among the plurality of storage compartments, in a first region from the inner box ceiling plate to the uppermost shelf support portion, when viewed 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, a first taper is provided such that the distance between the inner box left side plate and the inner box right side plate widens toward the front side of the inner box, In the first storage compartment, in a region below the first region, in a second region from the uppermost shelf support portion to the partition provided below the first storage compartment, when viewed 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, a second taper is provided, The second taper is provided over the entire height of the second region and is smaller than the first taper, A refrigerator.

2. A guide portion provided between the shelf support portion and the inner box back plate and having, The guide part has an upper surface, a lower surface, and side surfaces connecting the upper surface and the lower surface, each having a shape with an area that widens toward the rear, and the side surface of the guide part is formed continuously with the inner box back panel. The refrigerator according to claim 1.

3. In the first storage chamber, below the second region, a region where the left side panel of the inner box and the right side panel of the inner box are parallel is provided. The refrigerator according to claim 1 or 2.

4. An outer box constituting the outer surface of the refrigerator body, An inner box provided inside the outer box and having an inner box ceiling panel, an inner box left side panel, an inner box right side panel, an inner box back panel, and an inner box bottom panel that form a storage space, A partition that divides the storage space into a plurality of storage chambers, A door rail part that supports the door of the lowermost second storage chamber among the plurality of storage chambers, and comprising The inner box has a first chamfered part continuous with the inner box ceiling panel and the inner box left side panel, a second chamfered part continuous with the inner box ceiling panel and the inner box right side panel, a third chamfered part continuous with the inner box bottom panel and the inner box left side panel, and a fourth chamfered part continuous with the inner box bottom panel and the inner box right side panel, and has At least one of a set of the first chamfered part and the second chamfered part and a set of the third chamfered part and the fourth chamfered part is chamfered so that the radius of curvature gradually increases from the front to the rear of the refrigerator body. In the second storage chamber, in a third region from the inner box bottom panel to the door rail part, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, the left side panel of the inner box and the right side panel of the inner box are provided with a third slope such that the distance between the left side panel of the inner box and the right side panel of the inner box widens toward the front side of the inner box. In the second storage chamber, in a region above the third region, in a fourth region from the door rail portion to the partition provided above the second storage chamber, when viewed in a cross-section parallel to the bottom surface of the refrigerator body, a fourth slope is provided on the left inner box panel and the right inner box panel. The fourth slope is provided over the entire height of the fourth region and is smaller than the third slope. Refrigerator.

5. Shelf support portions provided on the left inner box panel and the right inner box panel, And a guide portion provided between the shelf support portion and the inner box back panel And having The guide portion has a shape in which the upper surface, the lower surface, and the side surfaces connecting the upper surface and the lower surface each have an area that expands toward the rear, and the side surfaces of the guide portion are formed continuously with the inner box back panel. The refrigerator according to claim 4.

6. In the second storage chamber, above the fourth region, a region where the left inner box panel and the right inner box panel are parallel is provided. The refrigerator according to claim 4 or 5.

7. A heat insulating material provided between the outer box and the inner box The refrigerator according to any one of claims 1 to 6, comprising

8. The heat insulating material is a vacuum heat insulating material, And a distance between the inner box and the vacuum heat insulating material is provided to be 3 mm or more. The refrigerator according to claim 7.

Images