refrigerator

Abstract

A refrigerator is provided that allows for easy filling of the space between the inner and outer compartments with liquid foamed insulation material even when the wall of the insulated compartment becomes thinner. The refrigerator according to this embodiment includes: an insulated compartment having liquid foamed insulation material between the inner and outer compartments; an injection port located on the upper part of the rear surface of the insulated compartment near a side wall for injecting the liquid foamed insulation material between the inner and outer compartments; a corner portion connected to a side wall of the insulated compartment from the top wall of the insulated compartment, with varying insulation thickness; a slightly thicker portion bulging outwards from the side wall of the insulated compartment; and a thickened portion connected to the corner portion at a position higher than the slightly thicker portion in the side wall of the insulated compartment, wherein the thickness of the side wall at the thickened portion is greater than the thickness of the side wall at the slightly thicker portion.

Description

Technical Field

[0001] Embodiments of the present invention relate to refrigerators. Background Technology

[0002] For example, as disclosed in Patent Document 1, the insulated cabinet constituting the main body of the refrigerator has a foamed insulation material between the inner and outer cabinets. Furthermore, the foamed insulation material is formed by injecting a raw liquid into the space between the inner and outer cabinets through an injection port located on the rear surface of the insulated cabinet, and causing the raw liquid to foam between the inner and outer cabinets.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2014-52124 In recent years, refrigerators have been increasingly designed to increase internal volume by thinning the walls of the insulated cabinets, resulting in a narrower space between the inner and outer cabinets. In conventional refrigerators, such as those disclosed in Patent Document 1, where the insulated cabinet walls were thicker and the space between the inner and outer cabinets was sufficiently wide, the foamed insulation material flowed easily within this space, minimizing the formation of unfilled areas. However, in recent refrigerators with thinner insulated cabinet walls, the space between the inner and outer cabinets is narrower than in conventional refrigerators, making it difficult for the foamed insulation material to flow smoothly and increasing the risk of incomplete filling. Summary of the Invention

[0004] This embodiment provides a refrigerator in which the liquid of foamed insulation material can be easily filled into the space even when the space between the inner and outer boxes becomes narrower due to the thinning of the walls of the insulation box.

[0005] The refrigerator according to this embodiment includes: an insulated cabinet having a foamed insulation material between an inner cabinet and an outer cabinet; an injection port located on the upper part of the rear surface of the insulated cabinet near a side wall of the insulated cabinet, for injecting the undiluted foamed insulation material between the inner cabinet and the outer cabinet; a corner portion connected to a side wall of the insulated cabinet from the top wall of the insulated cabinet, with varying insulation thickness; a slightly thicker portion bulging outward from the side wall of the insulated cabinet; and a thickened portion connected to the corner portion at a position in the side wall of the insulated cabinet higher than the slightly thicker portion, wherein the thickness of the side wall of the insulated cabinet at the thickened portion is greater than the thickness of the side wall of the insulated cabinet at the slightly thicker portion.

[0006] Invention Effects A refrigerator that can easily fill the space between the inner and outer boxes with the liquid of foamed insulation material even as the walls of the insulated box become thinner. Attached Figure Description

[0007] Figure 1 This is a diagram of the first embodiment of the present disclosure, and is a front view that schematically shows an example of the structure of a refrigerator.

[0008] Figure 2 This is a diagram of the first embodiment of the present disclosure, and is a longitudinal sectional front view schematically showing a structural example of the upper part of the heat-insulating box.

[0009] Figure 3 This is a diagram of the first embodiment of the present disclosure, and is a perspective view schematically showing a structural example of the rear part of the heat-insulating box.

[0010] Figure 4 This is a diagram of the first embodiment of the present disclosure, and is a perspective view schematically showing a structural example of the inner surface of the left side wall of the insulated box.

[0011] Figure 5 This is a diagram of the first embodiment of the present disclosure, and is a perspective view schematically showing a structural example of the inner surface of the right side wall of the insulated box.

[0012] Figure 6 This is a diagram of the first embodiment of the present disclosure, which is a longitudinal sectional front view schematically showing a structural example of the corner portion, the upper thickened portion, and the small thickened portion.

[0013] Figure 7 This is a diagram of the first embodiment of the present disclosure, and is a rear view schematically showing a structural example of the injection port and surrounding portion.

[0014] Figure 8 This is a diagram of the first embodiment of the present disclosure, and is a longitudinal sectional view schematically showing an example of the structure inside the side wall of the insulation box when the original liquid of the foamed insulation material is injected.

[0015] Figure 9 The figure shown is a first embodiment of this disclosure, and is an enlarged longitudinal sectional view of an example of the structure inside the side wall of the insulation box when the original liquid of the foamed insulation material is injected.

[0016] Figure 10 This is a diagram of the first embodiment of the present disclosure, which is a diagram that schematically shows an example of the expansion of the original liquid of the foamed insulation material within the side wall of the insulation box.

[0017] Figure 11 This is a diagram of the first embodiment of the present disclosure, which is a schematic diagram of an example in which the liquid foamed insulation material is filled into the side wall of the insulation box.

[0018] Figure 12 This is a diagram of the first embodiment of the present disclosure, which is a schematic diagram illustrating an example of the installation method of the vent, the anti-leakage strip, and the flexible strip.

[0019] Figure 13This is a comparative example of the present disclosure, and is a diagram that schematically illustrates an example of filling the side wall of the insulation box with the original liquid of foamed insulation material without the installation of a flexible strip.

[0020] Figure 14 This is a diagram of the first embodiment of the present disclosure, which is a schematic diagram illustrating an example of filling the side wall of the insulation box with the original liquid of foamed insulation material when a soft strip is provided.

[0021] Figure 15 This is a diagram of the second embodiment of the present disclosure, and is a rear view schematically showing a structural example of the injection port and surrounding portion.

[0022] Figure 16 This is a diagram of the second embodiment of the present disclosure, which is a diagram that schematically shows an example of the expansion of the original liquid of the foamed insulation material within the side wall of the insulation box.

[0023] Explanation of reference numerals in the attached figures In the attached drawings, 10 represents a refrigerator, 11 represents an insulated cabinet, 12 represents a refrigerator compartment (storage compartment), 12a, 13a, 14a, 15a, and 16a represent openings, 21 represents an inner box, 22 represents an outer box, 23 represents vacuum insulation material, 24 represents foam insulation material, 25 represents an injection port, 26 represents a corner, 27 represents an upper thickened section (thickened section, first thickened section), 28 represents a small thickened section, 29 represents a front thickened section (second thickened section), 40 represents a shelf support (internal wall component), 50 represents a wiring harness, 51 represents a position limiting band (position limiting part), 61 represents a vent hole, 62 represents a strip to prevent liquid leakage (ventilation assurance component), 63 represents a flexible strip (separation component), and 100 represents a discharge nozzle (discharge part). Detailed Implementation

[0024] Hereinafter, several embodiments of the refrigerator will be described with reference to the accompanying drawings. Furthermore, in the various embodiments, substantially the same elements are labeled with the same reference numerals, and their descriptions are omitted.

[0025] (First Implementation) Figure 1 The illustrated refrigerator 10 has multiple storage compartments 12, 13, 14, 15, and 16 formed inside a rectangular box-shaped insulated body 11 that forms its outer shape. Inside the storage compartments 12, 13, 14, 15, and 16, various stored items such as food can be cooled and preserved.

[0026] Storage compartment 12 is a refrigerator compartment maintained at a refrigeration temperature in this case. Hereinafter, storage compartment 12 is sometimes referred to as "refrigeration compartment 12". Storage compartment 13 is a vegetable compartment maintained at a refrigeration temperature in this case. Hereinafter, storage compartment 13 is sometimes referred to as "vegetable compartment 13". Storage compartment 14 is an ice-making compartment maintained at a freezing temperature in this case. Hereinafter, storage compartment 14 is sometimes referred to as "ice-making compartment 14". Storage compartment 15 is a small freezer compartment maintained at a freezing temperature in this case. Hereinafter, storage compartment 15 is sometimes referred to as "small freezer compartment 15". Storage compartment 16 is a large freezer compartment maintained at a freezing temperature in this case. Hereinafter, storage compartment 16 is sometimes referred to as "large freezer compartment 16".

[0027] The refrigerator compartment 12 is the uppermost of the multiple storage compartments 12, 13, 14, 15, and 16 of the refrigerator 10. The vegetable compartment 13 is located below the refrigerator compartment 12, at or near the center of the insulated housing 11 in the vertical direction. The ice maker compartment 14 and the small freezer compartment 15 are located below the vegetable compartment 13 and are arranged horizontally within the insulated housing 11. The large freezer compartment 16 is located within the insulated housing 11, below the ice maker compartment 14 and the small freezer compartment 15. The large freezer compartment 16 is the lowermost of the multiple storage compartments 12, 13, 14, 15, and 16 of the refrigerator 10.

[0028] The refrigerator compartment 12 has a rectangular opening 12a on its front surface. The front opening 12a of the refrigerator compartment 12 is opened and closed by two refrigerator doors 12D[R] and 12D[L], which are capable of rotating in the left and right directions. That is, the front opening 12a of the refrigerator compartment 12 is structured to open and close by at least two refrigerator doors, in this case, a right refrigerator door 12D[R] and a left refrigerator door 12D[L]. Alternatively, the refrigerator door may be a single door that opens and closes the front opening 12a of the refrigerator compartment 12. Furthermore, the front opening 12a of the refrigerator compartment 12 may also be structured to open and close by three or more refrigerator doors.

[0029] Vegetable compartment 13 has a rectangular opening 13a on its front surface. The opening 13a of the front surface of vegetable compartment 13 opens and closes via a storage door, a so-called drawer-type vegetable compartment door 13D, which can move in the front-back direction. Ice compartment 14 has a rectangular opening 14a on its front surface. The opening 14a of the front surface of ice compartment 14 opens and closes via a storage door, a so-called drawer-type ice compartment door 14D, which can move in the front-back direction. Small freezer compartment 15 has a rectangular opening 15a on its front surface. The opening 15a of the front surface of small freezer compartment 15 opens and closes via a storage door, a so-called drawer-type small freezer door 15D, which can move in the front-back direction. Large freezer compartment 16 has an opening 16a on its front surface. The opening 16a of the front surface of large freezer compartment 16 opens and closes via a storage door, a so-called drawer-type large freezer door 16D, which can move in the front-back direction.

[0030] Furthermore, a chiller 17 is provided within the refrigerator compartment 12. The chiller 17 is a storage room formed by dividing a portion of the space within the refrigerator compartment 12. In this case, the chiller 17 is formed in the lower part of the refrigerator compartment 12. In addition, the position and size of the chiller 17 within the refrigerator compartment 12 can be appropriately changed.

[0031] like Figure 2 As illustrated, the insulated enclosure 11 comprises a vacuum insulation material 23 and a foamed insulation material 24 between the inner enclosure 21 and the outer enclosure 22. The vacuum insulation material 23 is an insulation material formed before the inner enclosure 21 and the outer enclosure 22 are assembled into the insulated enclosure 11, and is formed into a predetermined shape, in this case, a rectangular sheet. The foamed insulation material 24 is formed by foaming and solidifying a liquid of the fluid-type foamed insulation material 24 injected between the inner enclosure 21 and the outer enclosure 22 after the inner enclosure 21 and the outer enclosure 22 are assembled, i.e., after the insulated enclosure 11 is assembled. On the left and right walls of the insulated enclosure 11, the outer enclosure 22, the vacuum insulation material 23, the foamed insulation material 24, and the inner enclosure 21 are arranged sequentially from the outside of the enclosure. The refrigerator 10 achieves a thinner sidewall for the insulated cabinet 11, where the thickness of the foamed insulation material 24 within the sidewall of the insulated cabinet 11 is thinner than the thickness of the vacuum insulation material 23. By achieving this thinner sidewall for the insulated cabinet 11, the volume of the storage compartment can be increased.

[0032] like Figure 3As illustrated, the rear surface of the insulated enclosure 11 has multiple injection ports 25, in this case four, for injecting the raw liquid of the foamed insulation material 24 between the inner enclosure 21 and the outer enclosure 22. All injection ports 25 are circular openings. Two injection ports 25 are located on the upper part of the rear surface of the insulated enclosure 11, near the left and right walls of the enclosure 11, respectively. The remaining two injection ports 25 are located on the lower part of the rear surface of the insulated enclosure 11, near the left and right walls of the enclosure 11, respectively.

[0033] like Figure 4 As illustrated, a corner portion 26 is provided in the portion of the inner casing 21 where the left side wall and top wall of the insulated casing 11 are connected. Additionally, as... Figure 5 As illustrated, a corner portion 26 is also provided in the portion of the inner casing 21 where the right side wall and top wall of the insulated casing 11 are connected. The corner portion 26 is formed to gradually widen from the front to the rear of the insulated casing 11. Furthermore, as... Figure 6 As illustrated, when viewed from the front side of the refrigerator 10, the corner 26 is formed at a predetermined angle D1 relative to the vertical direction and tilts inward toward the inside of the cabinet. That is, the corner 26 changes from the top wall of the insulated cabinet 11 in a manner that gradually shortens the "insulation thickness" in the horizontal direction, i.e., the "distance between the inner cabinet 21 and the outer cabinet 22," and is connected to the side wall of the insulated cabinet 11. Furthermore, in Figure 6 In the example shown, the left corner 26 is shown when viewed from the front side of the refrigerator 10, but the right corner 26 is also formed to have a predetermined angle D1 relative to the vertical direction and tilted towards the inside of the refrigerator when viewed from the front side of the refrigerator 10.

[0034] In addition, such as Figure 4 as well as Figure 5 As illustrated, upper thickening portions 27 are provided on both the left and right sides of the insulated cabinet 11. The upper thickening portion 27 is an example of a thickening portion and a first thickening portion. Viewed from the front side of the refrigerator 10, the portion of the upper thickening portion 27 forming the left side of the inner cabinet 21 bulges out as the right side of the inner cabinet below the left corner 26, thus increasing the thickness of the left side wall of the insulated cabinet 11. Similarly, viewed from the front side of the refrigerator 10, the portion of the upper thickening portion 27 forming the right side of the inner cabinet 21 bulges out as the left side of the inner cabinet below the right corner 26, thus increasing the thickness of the right side wall of the insulated cabinet 11. The upper thickening portion 27 is provided as a different component from the aforementioned corner 26. Furthermore, the upper thickening portion 27 is provided as a different component from the component that protrudes inward from the side wall of the insulated cabinet 11. As components that protrude into the box from the side wall of the insulated box 11, for example, reinforcing ribs supporting shelf components (not shown) and guide rails supporting storage containers (not shown) that can move in the front-back direction.

[0035] Furthermore, small thick portions 28 are provided below the portions of the side walls of the insulated cabinet 11 where the upper thickened portions 27 are formed. Viewed from the front side of the refrigerator 10, the portion of the inner cabinet 21 forming the small thick portions 28 on the left side bulges outwards from the upper thickened portions 27 on the left side, thus reducing the thickness of the left side wall of the insulated cabinet 11. Similarly, viewed from the front side of the refrigerator 10, the portion of the inner cabinet 21 forming the small thick portions 28 on the right side bulges outwards from the right corner 26, thus reducing the thickness of the right side wall of the insulated cabinet 11. The small thick portions 28 make the thickness of the side walls of the insulated cabinet 11 at least less than the thickness of the portion where the upper thickened portions 27 are formed. With this structural example having small thick portions 28 that are recessed outwards, the volume within the refrigerator compartment 12 can be further increased.

[0036] The upper thickened portion 27 is located above the thinner portion 28 on the side wall of the insulated housing 11 and connects to the corner portion 26. The thickness of the side wall of the insulated housing 11 at the upper thickened portion 27 is greater than the thickness of the side wall of the insulated housing 11 at the thinner portion 28. In addition, the upper thickened portion 27 extends from the rear wall of the insulated housing 11 to the front surface opening 12a of the refrigerator compartment 12.

[0037] Furthermore, front thickening portions 29 are provided on both the left and right walls of the insulated cabinet 11. The front thickening portion 29 is an example of a thickening portion and a second thickening portion. Viewed from the front side of the refrigerator 10, the portion of the inner cabinet 21 forming the left-side front thickening portion 29 bulges inwards towards the right side of the cabinet, below the upper left-side thickening portion 27 and in front of the small thickening portion 28, thus increasing the thickness of the left-side wall of the insulated cabinet 11. Similarly, viewed from the front side of the refrigerator 10, the portion of the inner cabinet 21 forming the right-side front thickening portion 29 bulges inwards towards the left side of the cabinet, below the upper right-side thickening portion 27 and in front of the small thickening portion 28, thus increasing the thickness of the right-side wall of the insulated cabinet 11. The upper thickening portion 27 and the front thickening portion 29 make the thickness of the side wall of the insulated cabinet 11 at least greater than the thickness of the portion where the small thickening portion 28 is formed.

[0038] The front thickened portion 29 is provided in the insulated housing 11, extending from the opening 12a on the front surface of the refrigerator compartment 12 towards the rear, forming a portion in which the thickness of the side wall of the insulated housing 11 is increased compared to the thinner portion 28. Furthermore, the front-to-back dimension of the front thickened portion 29 can be appropriately varied. Additionally, the vertical dimension of the front thickened portion 29 is approximately the same as or exactly the same as the vertical dimension of the thinner portion 28. However, the vertical dimension of the front thickened portion 29 may also be shorter or longer than the vertical dimension of the thinner portion 28.

[0039] The upper thickened portion 27 and the front thickened portion 29 bulge inwards at approximately the same or identical amounts, and the upper thickened portion 27 and the front thickened portion 29, including their intersecting boundary portion R, are approximately or completely coplanar. In other words, the refrigerator 10 is configured such that the portion forming the front thickened portion 29 in the inner box 21 is located on approximately or completely extended line of the portion forming the upper thickened portion 27 within the inner box 21. Furthermore, the thickness of the side wall of the insulated box 11 at the boundary portion R where the upper thickened portion 27 and the front thickened portion 29 intersect is approximately the same or completely identical to the thickness of the side wall of the insulated box 11 at the upper thickened portion 27 and the side wall of the insulated box 11 at the front thickened portion 29. In addition, a step or inclination that can be considered coplanar may exist at the boundary portion R between the upper thickened portion 27 and the front thickened portion 29.

[0040] In addition, such as Figure 6 As illustrated, the portion of the inner box 21 forming the upper thickened portion 27 is along the vertical direction in this case. In other words, the angle between the portion of the inner box 21 forming the upper thickened portion 27 and the vertical direction is approximately or completely zero degrees in this case. Furthermore, the angle between the portion of the inner box 21 forming the upper thickened portion 27 and the vertical direction may not be approximately or completely zero degrees; that is, the portion of the inner box 21 forming the upper thickened portion 27 may also be inclined relative to the vertical direction. However, when the portion of the inner box 21 forming the upper thickened portion 27 is configured to be inclined relative to the vertical direction, the angle between the portion of the inner box 21 forming the upper thickened portion 27 and the vertical direction can be an angle within a range smaller than the angle D1 between the portion of the inner box 21 forming the corner portion 26 and the vertical direction.

[0041] Furthermore, the portion forming the upper thickened portion 27 in the inner box 21 is connected to the portion forming the thinner portion 28 via a connecting portion 30. The connecting portion 30 forms the lower end of the upper thickened portion 27 and is formed to be inclined at a predetermined angle D2 relative to the vertical direction. The predetermined angle D2 preferably uses an angle in the range of, for example, 15 degrees to 50 degrees, but more preferably uses an angle in the range of, for example, 25 degrees to 35 degrees. Furthermore, in Figure 6 In the example shown, the upper left thickened portion 27 and connecting portion 30 are shown when viewed from the front side of the refrigerator 10, but the upper right thickened portion 27 and connecting portion 30 are configured to be symmetrical to the upper left thickened portion 27 and connecting portion 30 when viewed from the front side of the refrigerator 10.

[0042] In addition, such as Figure 7As illustrated, the refrigerator 10 is configured such that, viewed from the rear surface of the insulated cabinet 11, the portion of the inner cabinet 21 forming the upper thickened portion 27 is located within the area of ​​the opening of the inlet 25. Furthermore, the refrigerator 10 is configured such that, viewed from the rear surface of the insulated cabinet 11, the outer end of the inlet 25 in the left-right direction is located at a position that substantially overlaps or completely overlaps with the extension line L1 of the portion forming the small thickened portion 28 in the inner cabinet 21. Alternatively, the refrigerator 10 may be configured such that, viewed from the rear surface of the insulated cabinet 11, the outer end of the inlet 25 in the left-right direction is located closer to the inside of the cabinet than the extension line L1 of the portion forming the small thickened portion 28 in the inner cabinet 21. Additionally, in Figure 7 The diagram illustrates the structure around the right-side inlet 25 when viewed from the front side of the refrigerator 10. However, the structure around the left-side inlet 25 when viewed from the front side of the refrigerator 10 is symmetrical to the structure around the right-side inlet 25 when viewed from the front side of the refrigerator 10.

[0043] Furthermore, according to the refrigerator 10, the inlet 25 and the upper thickened portion 27 are located above the uppermost shelf member of the multi-layer (not shown) shelf components provided in the refrigerator compartment 12. However, the inlet 25 and the upper thickened portion 27 may also be located below the uppermost shelf member of the multi-layer (not shown) shelf components provided in the refrigerator compartment 12.

[0044] In addition, such as Figure 8 As illustrated, during the manufacture of the refrigerator 10, when injecting the raw liquid of the foamed insulation material 24 between the inner box 21 and the outer box 22 of the insulated box 11, the insulated box 11 is positioned with its front end, which has front openings 12a, 13a, 14a, 15a, and 16a, on the lower side, and its rear end, which has an injection port 25, on the upper side. Then, a discharge nozzle 100, serving as an example of a discharge portion, is inserted into the injection port 25 of the insulated box 11, which is in the injection position. The injection device (not shown) is configured to discharge the raw liquid of the foamed insulation material 24 from the discharge nozzle 100 into the space between the inner box 21 and the outer box 22.

[0045] An inclined section 31 is provided in the inner casing 21 at the portion where the rear wall and side wall of the insulated casing 11 are connected. When the insulated casing 11 is in the injection position, the inclined section 31 is inclined downward from the inside of the casing toward the outside. Furthermore, the discharge nozzle 100 inserted into the injection port 25 is positioned opposite the upper part of the inclined section 31.

[0046] Additionally, a shelf support 40 is provided in the area below the injection site of the foamed insulation material 24 in the side wall of the insulated box 11 when it is in the injection position. The shelf support 40 has a support portion 40a located inside the box and supporting a shelf component (not shown), and a locking portion 40b that engages with the outer surface of the inner box 21. That is, the shelf support 40 is configured such that the locking portion 40b, which forms part of it, is provided between the inner box 21 and the outer box 22 as an example of an internal wall component different from the vacuum insulation material 23 and the foamed insulation material 24. The shelf support 40 is fixed to the inner side of the refrigerator compartment 12 by engaging the locking portion 40b with the outer surface of the inner box 21. The shelf support 40 is a component designed to support the shelf component at a height preferred by the user.

[0047] Furthermore, the shelf support member 40 has a longest separation portion 41a, a shortest separation portion 41b, and an intermediate separation portion 41c in its locking portion 40b, which is part of it. The longest separation portion 41a is the portion of the locking portion 40b with the longest separation distance from the vacuum insulation material 23. The shortest separation portion 41b is the portion of the locking portion 40b with the shortest separation distance from the vacuum insulation material 23. The intermediate separation portion 41c is the portion of the locking portion 40b with a separation distance from the vacuum insulation material 23 that is shorter than the longest separation portion 41a but longer than the shortest separation portion 41b.

[0048] like Figure 9 As illustrated, according to the refrigerator 10, the separation distance H1 between the longest separating portion 41a in the locking portion 40b and the vacuum insulation material 23 is, for example, 4.4 mm. Furthermore, according to the refrigerator 10, the separation distance H2 between the shortest separating portion 41b in the locking portion 40b and the vacuum insulation material 23 is, for example, 1.4 mm. Additionally, according to the refrigerator 10, the separation distance H3 between the middle separating portion 41c in the locking portion 40b and the vacuum insulation material 23 is, for example, 3.4 mm. That is, any separation distance H1, H2, or H3 is configured to be, for example, 8 mm or less. Furthermore, according to the refrigerator 10, the thickness of the thinnest portion of the foamed insulation material 24 in the side wall of the insulated housing 11 is equal to the separation distance H2 between the vacuum insulation material 23 and the shortest separating portion 41b, which is 1.4 mm. That is, according to the refrigerator 10, the thickness of the thinnest portion of the foamed insulation material 24 in the side wall of the insulated housing 11 is also configured to be, for example, 8 mm or less.

[0049] Furthermore, the thickness of the thinnest part of the foamed insulation material 24 in the side wall of the insulation box 11 can be appropriately varied according to the thickness of the side wall of the insulation box 11, the thickness of the vacuum insulation material 23 installed in the side wall, and the size and shape of the internal wall components that are different from the vacuum insulation material 23 and the foamed insulation material 24. For example, it can be less than 7 mm, less than 6 mm, less than 5 mm, less than 4 mm, less than 3 mm, less than 2 mm, less than 1 mm, etc.

[0050] In addition, such as Figure 8 As illustrated, the insertion depth H4 of the discharge nozzle 100 into the injection port 25 when injecting the original liquid of the foamed insulation material 24 is, for example, 20 mm. Furthermore, the distance H5 from the front end of the discharge nozzle 100 inserted into the injection port 25 to the locking portion 40b of the shelf support member 40 is, for example, 100 mm or less. Moreover, the insertion depth H4 of the discharge nozzle 100 can be appropriately varied, for example, depending on the diameter of the injection port 25, the diameter of the discharge nozzle 100, etc. Furthermore, the distance H5 from the front end of the discharge nozzle 100 to the locking portion 40b of the shelf support member 40 can be appropriately varied, for example, it can be 90 mm or less, 80 mm or less, 70 mm or less, 60 mm or less, 50 mm or less, 40 mm or less, 30 mm or less, 20 mm or less, 10 mm or less, etc.

[0051] Furthermore, when injecting the raw liquid of the foamed insulation material 24, the distance H6 from the outer end of the injection port 25 in the left-right direction to the inner end of the vacuum insulation material 23 is, for example, 12 mm. Additionally, the distance H6 from the outer end of the injection port 25 in the left-right direction to the inner end of the vacuum insulation material 23 when injecting the raw liquid of the foamed insulation material 24 can be appropriately varied within a range of 20 mm or less, and the present invention is particularly effective when set within a range of 15 mm or less.

[0052] Furthermore, the distance H7 from the injection port 25 to the upper end of the vacuum insulation material 23 when injecting the raw liquid of the foamed insulation material 24 is, for example, 52 mm. Additionally, the distance H7 from the injection port 25 to the upper end of the vacuum insulation material 23 when injecting the raw liquid of the foamed insulation material 24 can be appropriately varied within a range of 80 mm or less, and the present invention is particularly effective when set within a range of 60 mm or less.

[0053] Additionally, a wiring harness 50 is provided on the rear and side walls of the insulated housing 11 connecting the inner casing 21 and the outer casing 22. The wiring harness 50 extends along the vertical direction of the insulated housing 11. The wiring harness 50 is a structure formed by bundling multiple wire-like components. Furthermore, the wire-like components constituting the wiring harness 50 may include, for example, electrical wires or power supply lines that supply power to various parts of the refrigerator 10, communication lines that transmit and receive signals and data between control devices, sensors, etc. (not shown) provided in the refrigerator 10, and connecting wires that connect the constituent elements of various electrical systems provided in the refrigerator 10, and other such wiring types. In addition, the wire-like components constituting the wiring harness 50 may also include refrigerant pipes that constitute a refrigeration cycle for generating cold air.

[0054] Additionally, the wire harness 50 is secured to the outer surface of the inner casing 21, for example, by a position limiting band 51. The position limiting band 51 is an example of a position limiting part, and may be made of adhesive tape or the like. Viewed from the rear surface of the insulated casing 11, the position limiting band 51 restricts the position of the wire harness 50 in a direction deviating from the inlet 25. More specifically, viewed from the rear surface of the insulated casing 11, the position limiting band 51 restricts the position of the wire harness 50 outward in a left-right direction near the inlet 25. Preferably, viewed from the rear surface of the insulated casing 11, the wire harness 50 is restricted by the position limiting band 51 at a position completely deviating from the opening of the inlet 25. However, viewed from the rear surface of the insulated casing 11, a portion of the wire harness 50 may also be restricted by the position limiting band 51 at a position existing within the opening of the inlet 25.

[0055] In addition, such as Figure 10 As illustrated, when the insulation box 11 is in the injection posture when the raw liquid G of the foamed insulation material 24 is injected, viewed from the side, the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 flows in a manner that expands downwards on the inclined portion 31. According to the inventor's simulation, it was determined that when the raw liquid G of the foamed insulation material 24 is discharged from the injection port 25 through the discharge nozzle 100 with a diameter of, for example, 30 mm, the expansion range S1 of the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 before reaching the upper thickened portion 27 is, for example, about 150 mm. Therefore, the expansion amount S2 of the raw liquid G of the foamed insulation material 24 from the radial end of the discharge nozzle 100 becomes a value obtained by subtracting 30 mm, which is the radial dimension of the discharge nozzle 100, from the expansion range S1 of 150 mm, which is about 60 mm. Figure 7 As illustrated, according to the refrigerator 10, viewed from the rear surface of the insulated cabinet 11, the upper thickened portion 27 is configured to converge within the extension range S1. Therefore, the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 can flow efficiently into the space between the upper thickened portion 27 and the outer casing 22. Furthermore, the extension amount S2 of the raw liquid G of the foamed insulation material 24 extending radially from the end of the discharge nozzle 100 can be an extension of 60 mm or less, for example, an extension of about 50 mm, or for example, an extension of 35 mm or less.

[0056] According to the refrigerator 10 illustrated above, in the inner box 21, in addition to the corner portion 26 which is connected in an inclined manner from the top wall of the insulated box 11 toward the side wall, an upper thickened portion 27 connected to the corner portion 26 is provided in the side wall of the insulated box 11 at a position higher than the thinner portion 28. Furthermore, the thickness of the side wall of the insulated box 11 at the upper thickened portion 27 is greater than the thickness of the side wall of the insulated box 11 at the thinner portion 28.

[0057] According to this structural example, such as Figure 11 As illustrated, the liquid G of the foamed insulation material 24 injected from the injection port 25 flows downward in the space between the portion of the inner box 21 where the upper thickened portion 27 is formed and the outer box 22, gradually filling the lower part of the insulation box 11 in the injection position. Therefore, even in a refrigerator 10 where the space between the inner box 21 and the outer box 22 is narrowed due to the thinning of the side walls of the insulation box 11, the liquid G of the foamed insulation material 24 can flow easily in the space between the inner box 21 and the outer box 22, and the generation of areas V, such as so-called "voids," of unfilled liquid G of the foamed insulation material 24 between the inner box 21 and the outer box 22 can be suppressed. That is, in the refrigerator 10 of this disclosure, in a structure where the side walls of the insulation box 11 are thinned, the occurrence of poor filling of the liquid G of the foamed insulation material 24 can be suppressed. Furthermore, even in a refrigerator 10 where the space between the inner box 21 and the outer box 22 is narrowed due to the thinning of the side walls of the insulated box 11, the original liquid G of the foamed insulation material 24 can be quickly filled into the space between the inner box 21 and the outer box 22, thus shortening the manufacturing time.

[0058] Furthermore, according to the refrigerator 10, the angle between the portion forming the upper thickened portion 27 in the inner box 21 and the vertical direction is smaller than the angle D1 between the portion forming the corner portion 26 in the inner box 21 and the vertical direction. Therefore, the amount of bulging of the upper thickened portion 27 into the inner box can be suppressed, the original liquid G of the foamed insulation material 24 can be easily filled through the upper thickened portion 27, and the amount of reduction in the inner box volume accompanying the provision of the upper thickened portion 27 can be suppressed.

[0059] Furthermore, according to the refrigerator 10, the upper thickened portion 27 extends from the rear wall of the insulated cabinet 11 to the opening 12a on the front surface of the refrigerator compartment 12. That is, the upper thickened portion 27 is configured to extend from the upper end to the lower end of the insulated cabinet 11 when it is in the injection position. According to this structural example, the raw liquid G of the foamed insulation material 24 injected from the injection port 25 flows more easily downward in the space between the portion of the inner cabinet 21 where the upper thickened portion 27 is formed and the outer cabinet 22, making it less likely for poor filling of the raw liquid G of the foamed insulation material 24 to occur.

[0060] Furthermore, according to the refrigerator 10, when viewed from the rear surface of the insulated cabinet 11, the portion of the inner cabinet 21 in which the upper thickened portion 27 is formed is located within the area of ​​the opening of the injection port 25. According to this structural example, the raw liquid G of the foamed insulation material 24 injected from the injection port 25 flows more easily into the portion of the inner cabinet 21 in which the upper thickened portion 27 is formed and the outer cabinet 22, making it less likely for poor filling of the raw liquid G of the foamed insulation material 24 to occur.

[0061] Furthermore, according to the refrigerator 10, below the portion forming the upper thickened portion 27 in the side wall of the insulated cabinet 11, there is a portion of the side wall of the insulated cabinet 11 with a thickness smaller than that of the upper thickened portion 27. Moreover, when viewed from the rear surface side of the insulated cabinet 11, the outer end of the inlet 25 in the left-right direction is located at a position that substantially overlaps with the extension line L1 of the portion forming the small thickened portion 28 in the inner cabinet 21, or is located closer to the inner side of the cabinet than the extension line L1.

[0062] According to the refrigerator 10, the sidewall of the insulated cabinet 11 is a thin-walled portion with a small thickening portion 28. Therefore, assuming that the upper thickening portion 27 is not provided, the entire injection port 25 faces the rear surface of the inner cabinet 21. In such a structure, the flow of the raw liquid G of the foamed insulation material 24 injected from the injection port 25 is easily obstructed by the rear surface of the inner cabinet 21. According to the refrigerator 10, in a structure in which the sidewall of the insulated cabinet 11 is thinned to the point that the entire injection port 25 faces the rear surface of the inner cabinet 21, the upper thickening portion 27 is provided in a manner that faces the injection port 25. Therefore, even in the structure where the sidewall of the insulated cabinet 11 is thinned, the flow of the raw liquid G of the foamed insulation material 24 can be promoted by the portion where the upper thickening portion 27 is formed.

[0063] Furthermore, according to the refrigerator 10, on the side wall of the insulated cabinet 11, an outer box 22, a vacuum insulation material 23, a foam insulation material 24, and an inner box 21 are arranged sequentially from the outside. Moreover, the thickness of the thinnest portion of the foam insulation material 24 in the area below where the raw liquid G of the foam insulation material 24 is injected into the side wall of the insulated cabinet 11 is, for example, 8 mm or less. That is, the refrigerator 10 of this disclosure assumes a structure where the insulation wall, with the thinnest portion of the foam insulation material 24 being, for example, 8 mm or less, is thinned, and even in a structure where the raw liquid G of the foam insulation material 24 needs to be filled in such a narrow area, the raw liquid G can be filled well.

[0064] Furthermore, according to the refrigerator 10, a shelf support 40, which is a different internal wall component from the vacuum insulation material 23 and the foamed insulation material 24, is provided between the inner box 21 and the outer box 22 within the side wall of the insulated cabinet 11. In the refrigerator 10, where such a support 40 and other structures exist within the side wall of the insulated cabinet 11, the present invention is particularly effective when the distance H5 from the front end of the discharge nozzle 100, from which the raw liquid G of the foamed insulation material 24 is discharged through the injection port 25, to the structure is, for example, 100 mm or less. If this distance is ensured to be distance H5, it is easy to avoid obstruction of the flow of the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 by the structure, and it is possible to further suppress poor filling of the raw liquid G of the foamed insulation material 24. Furthermore, the present invention is particularly effective when the total distance, which is the distance from the injection port 25 to the structure (not from the front end of the discharge nozzle 100), i.e., the total distance of distances H4 and H5, is, for example, 120 mm or less.

[0065] Furthermore, according to the refrigerator 10, a front thickening portion 29 is provided in the insulated cabinet 11, extending rearward from the opening 12a on the front surface of the refrigerator compartment 12, increasing the thickness of the side wall of the insulated cabinet 11 compared to the thinner portion 28. According to this structural example, when the insulated cabinet 11 is in an injection position, the front thickening portion 29 forms a space extending in the left-right direction at the lower end of the insulated cabinet 11. Therefore, the raw liquid G of the foamed insulation material 24 injected from the injection port 25 flows downward in the space formed by the upper thickening portion 27 and easily flows laterally in the space formed by the front thickening portion 29. Thus, it is easier to gradually fill the raw liquid G of the foamed insulation material 24 from the lower side of the insulated cabinet 11 in the injection position.

[0066] Furthermore, according to the refrigerator 10, the thickness of the side wall of the insulated cabinet 11 at the boundary R where the upper thickened portion 27 intersects with the front thickened portion 29 is approximately or exactly the same as the thickness of the side wall of the insulated cabinet 11 at the upper thickened portion 27 and the front thickened portion 29. According to this structural example, although two types of thickened portions 27 and 29 are provided on the inner surface of the side wall of the insulated cabinet 11, these thickened portions 27 and 29 can form a substantially or completely coplanar appearance, achieving a continuous and aesthetically pleasing appearance with integrated thickened portions 27 and 29. In addition, even if a load is applied to the inner surface of the side wall of the insulated cabinet 11 due to the weight of the stored items or the shelf components (not shown) within the refrigerator compartment 12, stress concentration at the boundary R between the upper thickened portion 27 and the front thickened portion 29 can be avoided, resulting in an advantageous structure in terms of strength.

[0067] Furthermore, according to the refrigerator 10, the portion connecting the rear wall and side wall of the insulated housing 11 between the inner box 21 and the outer box 22 includes a wire bundle 50 formed by bundling multiple linear components. Viewed from the rear surface of the insulated housing 11, the position of this wire bundle 50 is restricted by a position limiting band 51 in a direction deviating from the injection port 25. Although the space between the inner box 21 and the outer box 22 narrows due to the thinning of the side walls of the insulated housing 11, the possibility of the flow of the raw liquid G of the foamed insulation material 24 being obstructed by this wire bundle 50 increases if the position of the wire bundle 50, which is thickened by bundling multiple linear components, is not restricted in any way. According to the structural example of the refrigerator 10 disclosed herein, the flow of the raw liquid G of the foamed insulation material 24 injected from the injection port 25 can be prevented from being obstructed by the wire bundle 50, and poor filling of the raw liquid G of the foamed insulation material 24 can be suppressed.

[0068] In addition, such as Figure 12 As illustrated, according to the refrigerator 10, ventilation holes 61 are provided at multiple locations on the inner box 21. According to the refrigerator 10, the multiple ventilation holes 61 are provided in portions of the inner box 21 that have small thick sections 28. Furthermore, each ventilation hole 61 may have a structure consisting of multiple closely spaced small holes. However, a single ventilation hole 61 may also be composed of a single small hole, a slit, or the like.

[0069] With the insulation housing 11 in the injection position, multiple vent holes 61 are arranged laterally. Furthermore, the multiple vent holes 61 are arranged at predetermined intervals in the lateral direction. The vent holes 61 are holes used to discharge gas generated during the foaming of the original liquid of the foamed insulation material 24 injected between the inner housing 21 and the outer housing 22 to the outside of the insulation housing 11.

[0070] Furthermore, before injecting the raw liquid of the foamed insulation material 24 between the inner box 21 and the outer box 22, a leak-proof strip 62 is affixed to the outer surface of the inner box 21. The leak-proof strip 62 is an example of a ventilation-ensuring component. It is affixed to the outer surface of the inner box 21 in a manner that spans and covers multiple ventilation holes 61, suppressing the flow of the raw liquid of the foamed insulation material 24 injected between the inner box 21 and the outer box 22 from the ventilation holes 61. Additionally, the leak-proof strip 62 is made of a breathable material such as a thin film. Therefore, the leak-proof strip 62 suppresses the flow of the raw liquid of the foamed insulation material 24 itself from the ventilation holes 61, while allowing gas generated during the foaming of the raw liquid of the foamed insulation material 24 to flow out from the ventilation holes 61. In other words, the leak-proof strip 62 has the function of covering the ventilation holes 61 and ensuring the ventilation of the ventilation holes 61.

[0071] Furthermore, before injecting the original liquid of the foamed insulation material 24 between the inner box 21 and the outer box 22, a soft strip 63 is inserted between the anti-leakage strip 62 and the inner box 21. The soft strip 63 is an example of a separating component. The soft strip 63 is, for example, made of a sponge-like porous material, and has a structure that can be deformed by applying external force. According to the refrigerator 10, the soft strip 63 is installed between the multiple vent holes 61 in a state of being sandwiched between the anti-leakage strip 62 and the inner box 21. The soft strip 63 arranged in this way partially separates the anti-leakage strip 62 from the inner box 21, forming a ventilation space that allows the gas generated during the foaming of the original liquid of the foamed insulation material 24 to flow.

[0072] Furthermore, according to the refrigerator 10, the flexible strip 63 is positioned near the middle vent 61 among the three vents 61 arranged laterally. More specifically, the flexible strip 63 is positioned upstream of the liquid foam insulation 24 injected between the inner casing 21 and the outer casing 22 before reaching the middle vent 61 among the three vents 61. Moreover, the flexible strip 63 forms the aforementioned ventilation space upstream of the middle vent 61 among the three vents 61, thereby maintaining the ventilation capability of the middle vent 61 among the three vents 61.

[0073] exist Figure 13 In the example shown, as a comparative example, a flexible strip 63 is not provided between the anti-leakage strip 62 and the inner tank 21. Without the flexible strip 63, as... Figure 13 As illustrated in (a), during the injection of the raw liquid G of the foamed insulation material 24 between the inner box 21 and the outer box 22, if all the vent holes 61 are blocked by the raw liquid G, the gas generated subsequently by the foaming of the raw liquid G will not be able to flow out from the vent holes 61. Therefore, as Figure 13 As illustrated in (b), the area V between the inner casing 21 and the outer casing 22 where gas residue is generated and the raw material G of the foamed insulation material 24 is not filled, is referred to as a so-called "void". That is, if a soft strip 63 is not provided between the raw material leakage prevention strip 62 and the inner casing 21, the possibility of poor filling of the raw material G of the foamed insulation material 24 is increased.

[0074] In contrast, Figure 14 The example illustrates a case where a flexible strip 63 is installed between the anti-leakage strip 62 and the inner tank 21. When the flexible strip 63 is installed between the anti-leakage strip 62 and the inner tank 21, as... Figure 14As illustrated in (a), during the process of injecting the raw liquid G of the foamed insulation material 24 between the inner box 21 and the outer box 22, at least one of the vent holes 61 in multiple locations is vented. In this case, a ventilation space W is formed near the middle vent hole 61 among the three vent holes 61 arranged laterally, by a flexible band 63. Therefore, the gas generated during the foaming of the raw liquid G filling the space between the inner box 21 and the outer box 22 can be discharged through this ventilation space W from the middle vent hole 61 among the three vent holes 61 arranged laterally. Figure 14 As illustrated in (b), it is possible to suppress poor filling of the raw liquid G that produces the foamed insulation material 24. Furthermore, the ventilation space W formed by the flexible strip 63 eventually disappears almost or completely as the flexible strip 63 is flattened by the foamed insulation material 24.

[0075] (Second Implementation) like Figure 15 As illustrated in the second embodiment, when viewed from the rear surface of the heat insulation housing 11, the injection port 25 is positioned separate from the upper thickened portion 27. The upper thickened portion 27 includes a connecting portion 30 on the injection port 25 side; therefore, the end of the upper thickened portion 27 on the injection port 25 side becomes the end of the connecting portion 30 on the injection port 25 side. Furthermore, the separation distance H8 between the end of the injection port 25 on the upper thickened portion 27 side and the end of the upper thickened portion 27 on the injection port 25 side is, for example, 50 mm or less.

[0076] like Figure 16 As illustrated, the separation distance H8 can be appropriately set by taking into account the expansion range S1 from the original liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 to the upper thickened portion 27, the expansion amount S2 from the radial end of the original liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100, etc.

[0077] To illustrate the setting example of the separation distance H8, when the diameter of the discharge nozzle 100 is, for example, 30 mm, and the expansion range S1 of the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 up to the upper thickened portion 27 is, for example, 150 mm, the expansion amount S2 of the raw liquid G of the foamed insulation material 24 from the radial end of the discharge nozzle 100 is 60 mm. Therefore, if the separation distance H8 is set to a range shorter than 60 mm, for example, 50 mm or less, it is possible to form a state where the expansion range S1 of the upper thickened portion 27 and the raw liquid G of the foamed insulation material 24 overlaps by at least 10 mm, allowing the raw liquid G of the foamed insulation material 24 discharged from the discharge nozzle 100 to flow efficiently into the space between the upper thickened portion 27 and the outer casing 22. Furthermore, a shorter separation distance H8 is more preferable; therefore, it can also be 40 mm or less, 30 mm or less, etc. Furthermore, the separation distance H8 is more preferably 20 mm or less, and even more preferably 10 mm or less.

[0078] (Other implementation methods) Furthermore, this disclosure is not limited to the various embodiments described above, and appropriate changes and extensions can be made without departing from its spirit. For example, the refrigerator 10 may also be configured as a combination of embodiments appropriately selected from the various embodiments described above.

[0079] Alternatively, grooves can be provided on the surface of the vacuum insulation material 23 that becomes the foamed insulation material 24, allowing these grooves to function as flow paths for the raw liquid of the foamed insulation material 24. Furthermore, while this disclosure illustrates a structure with thickened portions 27, 29, and a small thickened portion 28 in the refrigerator compartment 12, it is also possible to have these thickened portions 27, 29, and a small thickened portion 28 in a storage compartment other than the refrigerator compartment 12. That is, the positions of the thickened portions 27, 29, and the small thickened portion 28 can be appropriately varied depending on the location of the injection port 25. Additionally, the thickness of the sidewalls of the thickened portions 27 and 29 can be appropriately varied within a range greater than the thickness of the sidewall of the small thickened portion 28. Furthermore, the thickness of the sidewalls of the thickened portions 27 and 29 can be set based on, for example, the thickness of the sidewall of the small thickened portion 28, and in this case, it can be specified by specific values ​​such as 1.2 times or 1.5 times the thickness of the sidewall of the small thickened portion 28.

[0080] The foregoing has described several embodiments of the present invention, but these embodiments are merely illustrative examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, modifications, etc., can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, and are also included in the scope of the invention described in the patent claims and its equivalents.

Claims

1. A refrigerator, comprising: The insulated enclosure has foamed insulation material between the inner and outer enclosures; An injection port is located on the upper part of the rear surface of the insulation box, near the side wall of the insulation box, to inject the original liquid of the foamed insulation material between the inner box and the outer box; At the corner, the insulation thickness varies from one side of the top wall of the insulation box to the side wall of the insulation box; The thicker portion bulges outward from the side wall of the insulated box; and The thickened portion, located above the thinner portion in the side wall of the insulation box, connects to the corner portion. The thickness of the side wall of the heat insulation box at the thickened portion is greater than the thickness of the side wall of the heat insulation box at the thinner portion.

2. The refrigerator according to claim 1, wherein, The insulated enclosure has an opening on its front surface. The thickened portion extends from the rear wall of the insulated box to the opening.

3. The refrigerator according to claim 1, wherein, Viewed from the rear surface of the insulation box, the thickened portion is located within a portion of the area of ​​the injection port opening.

4. The refrigerator according to claim 1, wherein, The outer end of the injection port in the left-right direction is located at a position that roughly overlaps with the extension line of the portion forming the small thick part in the inner box, or is located closer to the inner side of the box than the extension line.

5. The refrigerator according to claim 1, wherein, The side wall of the insulated box is equipped with internal components that are different from the vacuum insulation material and the foamed insulation material. The distance from the front end of the discharge section from which the original liquid of the foamed insulation material is inserted into the injection port to the inner wall component is less than 100 mm.

6. The refrigerator according to claim 1, wherein, The front surface of the insulated enclosure has an opening. The first thickening portion is provided as the thickening portion. The insulation box has a second thickened portion within a certain range extending rearward from the opening, where the thickness of the side wall of the insulation box is increased compared to the smaller thickened portion. The thickness of the side wall of the heat insulation box at the intersection of the first thickened portion and the second thickened portion is the same as the thickness of the side wall of the heat insulation box at the first thickened portion and the second thickened portion.

7. The refrigerator according to claim 1, wherein, have: A cable bundle, located between the inner and outer casings and connecting the rear and side walls of the insulated enclosure, is composed of multiple bundled electrical wires; and The position limiting part, viewed from the rear surface side of the heat insulation box, restricts the position of the wire in a direction deviating from the injection port.

8. The refrigerator according to claim 1, wherein, have: Ventilation holes are provided in multiple locations within the inner casing; A ventilation-ensuring component is disposed on the outer surface of the inner box in such a manner as to cover the ventilation hole, thereby ensuring the ventilation of the ventilation hole; as well as Separate components are used to ensure partial separation between the ventilation-ensuring components and the inner casing. The separation component is positioned upstream of the original liquid of the foamed insulation material injected between the inner and outer boxes before it reaches the vent hole, maintaining a state where air can pass through the vent hole.

9. The refrigerator according to claim 1, wherein, Viewed from the rear surface of the insulation box, the injection port is located away from the thickened portion. The separation distance between the end of the thickened portion on the injection port and the end of the thickened portion on the injection port side is less than 50 mm.

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