JP5886017B2 - Vacuum insulation panel and refrigerator using the same - Google Patents

Description

  The present embodiment relates to a vacuum heat insulation panel and a refrigerator using the same.

  Conventionally, refrigerators are insulated by filling, for example, foamable urethane between an outer box and an inner box. Such a conventional refrigerator ensures the structural strength by the outer box, the inner box, and urethane filled therebetween. On the other hand, in recent years, refrigerators that have been insulated using a vacuum insulation panel (VIP) instead of the foamable urethane have been proposed. This VIP can reduce the wall thickness for heat insulation as compared with the prior art. However, the refrigerator using VIP has a problem that it is difficult to ensure the strength because the wall thickness between the outer box and the inner box decreases.

JP 2007-139184 A

  The problem to be solved by the present invention is to provide a VIP having a high strength when a structure is formed, and to provide a refrigerator using this VIP.

  In order to achieve the above object, the vacuum heat insulation panel of this embodiment includes a core material, a reinforcing member, and a packaging member. The reinforcing member extends from an arbitrary end of the core material to the other end facing the core member. A packaging member accommodates a core material and a reinforcement member in an airtight decompression state inside.

The schematic perspective view which shows the external appearance of the refrigerator by 1st Embodiment. The schematic front view which shows the external appearance of the refrigerator by 1st Embodiment Schematic which shows the frame member and inner box of the refrigerator by 1st Embodiment. The schematic diagram which shows the cross section of the side wall of the refrigerator by 1st Embodiment The schematic diagram which shows the cross section of VIP used for the refrigerator by 1st Embodiment. The schematic diagram which shows the structure of VIP used for the refrigerator by 1st Embodiment. Typical sectional drawing which shows the reinforcement member of VIP used for the refrigerator by 1st Embodiment Schematic top view which shows the reinforcement member of VIP by 2nd Embodiment The schematic diagram which shows the structure of VIP by 3rd Embodiment. Schematic diagram showing the configuration of the VIP according to the fourth embodiment Typical sectional drawing which shows the reinforcement member of VIP by other embodiment Typical sectional drawing which shows the reinforcement member of VIP by other embodiment The schematic diagram which shows the cross section of the side wall of the refrigerator by other embodiment

Hereinafter, a plurality of embodiments of a refrigerator using VIP will be described with reference to the drawings. Note that, in a plurality of embodiments, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.
(First embodiment)
A refrigerator according to the first embodiment is shown in FIGS. 1 and 2. The refrigerator 10 includes a box-shaped main body 11, a door member 12, and a VIP 13. The main body 11 is open at one end in the front-rear direction. The open end side of the main body 11 is defined as the front side. That is, the front of the main body 11 is open. In the case of this embodiment, the main body 11 has a frame member 14 and an inner box 15 as shown in FIG. The frame member 14 is made of a metal such as stainless steel or aluminum. The inner box 15 is attached to the frame member 14 and forms a storage chamber 16 inside. The inner box 15 is made of, for example, resin. The main body 11 has an outer box 17 that covers the outer side of the inner box 15.

  The storage chamber 16 formed by the inner box 15 is partitioned into a refrigerating chamber 21, a vegetable chamber 22, an ice making chamber 23, a small freezing chamber 24, and a freezing chamber 25 from above as shown in FIG. As shown in FIGS. 1 and 4, the outer box 17 has a VIP 13 sandwiched between the outer box 17 and the inner box 15. The outer box 17 is made of a metal such as stainless steel or a steel plate. As shown in FIG. 1, the VIP 13 is provided between the inner box 15 and the outer box 17 on the left and right side walls 31 and 32 of the refrigerator 10. The VIP 13 is also provided between the inner box 15 and the outer box 17 on the rear wall and the top wall of the refrigerator 10 (not shown). As described above, in the present embodiment, the VIP 13 is in contact with the inner box 15 and the outer box 17, respectively, and between the VIP 13 and the inner box 15 and between the VIP 13 and the outer box 17, for example, urethane or the like. The foam resin is not filled.

  The door member 12 closes the opening on the front side of each room partitioned by the inner box 15. That is, the door member 12 has a refrigerator compartment door 41, a vegetable compartment door 42, an ice making compartment door 43, a small freezer compartment door 44, and a main freezer compartment door 45 from above as shown in FIG. The largest refrigerator door 41 among these doors is divided into a right door 411 and a left door 412. The right door 411 opens and closes the refrigerator compartment 21 by rotating around a support portion 47 provided at the right end of the frame member 14 as shown in FIG. Similarly, the left door 412 rotates around the support portion 48 provided at the left end of the frame member 14 to open and close the refrigerator compartment 21.

  The refrigerator compartment 21 and the vegetable compartment 22 of the main body 11 are controlled to have a refrigerator temperature of, for example, about 1 ° C. to 5 °. On the other hand, the ice making room 23, the small freezer room 24, and the freezer room 25 are controlled to a freezing temperature of, for example, −18 ° C. or lower. The refrigerator 10 includes a refrigeration cycle including a compressor, a condenser, and an evaporator (not shown). In the case of this embodiment, a compressor (not shown) is installed on a mounting portion 49 located on the rear end side above the main body 11 as shown in FIG.

Next, the VIP 13 according to the first embodiment will be described in detail.
The VIP 13 includes a core material 51, a reinforcing member 52, and a packaging member 53 as shown in FIG. The core material 51 is formed in a plate shape with a heat insulating material such as glass wool. The reinforcing member 52 is formed in a plate shape with a metal such as aluminum or iron. When the VIP 13 is configured, the reinforcing member 52 extends from an arbitrary end to the other end facing the VIP 13. The packaging member 53 accommodates the core material 51 and the reinforcing member 52. The packaging member 53 is composed of, for example, a plurality of resins and metal vapor deposition layers. Thereby, the packaging member 53 has what is called gas barrier property which interrupt | blocks permeation | transmission of gas. In the VIP 13, after the core material 51 and the reinforcing member 52 are accommodated inside the packaging member 53, the inside of the packaging member 53 is decompressed. After decompressing the inside of the packaging member 13, the VIP 13 is sealed at its end by, for example, heat welding. Therefore, the VIP 13 is in a state where the inside of the packaging member 53 is close to a vacuum. Thereby, VIP13 exhibits high heat insulation. In FIG. 5, a space is shown in a part between the core material 51 and the packaging member 53 for easy understanding. However, in the VIP 13 of the embodiment, the inner side of the packaging member 53 is depressurized, and thus the core material 51 and the packaging member 53 are in close contact with each other. The same applies to each embodiment described below.

  In the case of the present embodiment, the core material 51 includes a thin plate-like first core material 511, second core material 512, third core material 513, and fourth core material 514, as shown in FIGS. Has been. As shown in FIG. 5, in the thickness direction of the VIP 13, the first core material 511 and the fourth core material 514 sandwich the second core material 512, the third core material 513, and the reinforcing member 52 between each other. . As shown in FIG. 6B, the reinforcing member 52 is sandwiched between the second core material 512 and the third core material 513 in the plane direction of the VIP 13. Thus, the first core material 511, the second core material 512, the third core material 513, and the fourth core material 514 cover the periphery of the reinforcing member 52. The second core material 512 and the third core material 513 are set to substantially the same plate thickness.

  In the case of the rectangular VIP 13 as shown in FIGS. 1 and 6, the reinforcing member 52 is provided at a position along the diagonal line from one end of the rectangular VIP 13 to the other end. Thereby, the reinforcing member 52 is provided obliquely with respect to the longitudinal direction of the core material 51 accommodated in the packaging member 53. Further, the reinforcing member 52 is bent along the longitudinal direction as shown in FIGS. 1 and 6, and the cross section is formed in an approximately L shape as shown in FIG. Thereby, the bent reinforcing member 52 has a first forming surface 521 and a second forming surface 522. In the present embodiment, the first formation surface 521 extends in the plane direction of the VIP 13, and the second formation surface 522 extends in the plate thickness direction of the VIP 13. The first forming surface 521 and the second forming surface 522 are bent at a corner 523 as shown in FIG. The length from the corner portion 523 to the end portion 524 on the first forming surface 521 side is different from the length from the corner portion 523 to the end portion 525 on the second forming surface 522 side. Thereby, the first forming surface 521 and the second forming surface 522 have different areas. In the present embodiment, the length from the corner 523 to the end 524 is longer than the length from the corner 523 to the end 525. As a result, the first forming surface 521 has a larger area than the second forming surface 522.

  The thickness of the reinforcing member 52 is smaller than the total thickness of the core material 51 after being decompressed. That is, in the second forming surface 522 of the reinforcing member 52, the length from the corner portion 523 to the end portion 525 is the length of the first core material 511, the second core material 512, and the fourth core material 514 that form the VIP 13 after decompression. It is smaller than the total thickness. Thereby, the edge part 525 of the 2nd formation surface 522 of the reinforcement member 52 does not contact the packaging member 53 which covers this.

  The VIP 13 including the reinforcing member 52 is provided on the side walls 31 and 32 of the main body 11 of the refrigerator 10 as described above. In this case, the VIP 13 is provided on each of the right side wall 31 and the left side wall 32 of the main body 11. When the VIP 13 including the reinforcing member 52 is provided on the side walls 31 and 32 of the main body 11 as described above, the reinforcing member 52 is inclined upward in the vertical direction toward the front of the main body 11 and downward toward the rear of the main body 11. ing. Specifically, in the case of the VIP 13 provided on the right side wall 31, as shown in FIG. 1, the reinforcing member 52 is inclined with the upper end side facing the front of the main body 11 and the lower end side facing the rear of the main body 11. doing. Although not shown, in the case of VIP 13 on the left side wall 32, similarly, the upper end side is inclined toward the front of the main body 11 and the lower end side is inclined toward the rear of the main body 11. Accordingly, the reinforcing member 52 of the VIP 13 is provided at a position close to the support portion 47 of the right door 411 and the support portion 48 of the left door 412.

  The refrigerator compartment 21 is opened and closed by a relatively heavy right door 411 and left door 412. Therefore, a large twisting force is applied to the support portion 47 that supports the right door 411 and the support portion 48 that supports the left door 412 as the right door 411 and the left door 412 rotate. Therefore, the strength of the main body 11 is improved by providing the inclined reinforcing member 52 at a position close to the support portion 47 and the support portion 48. Therefore, even when a large twisting force is applied to the support portion 47 and the support portion 48, the deformation of the frame member 14 provided with the support portion 47 and the support portion 48 is reduced. As a result, a decrease in the airtightness of the refrigerator 10 due to the deformation of the frame member 14 can be suppressed, and the cooling performance of the refrigerator 10 can be enhanced.

  Further, in the case of the VIP having the first forming surface 521 and the second forming surface 522 on the reinforcing member 52, the first forming surface 521 having a larger area faces the outside of the main body 11 as shown in FIG. A refrigerator compartment 21 and a freezer compartment 25 are formed inside the main body 11, that is, on the storage compartment 16 side. There is a temperature difference of about 20 ° C. between the refrigerator compartment 21 and the freezer compartment 25. Therefore, when the first formation surface 521 faces the inside of the main body 11, a heat conduction path is formed between the refrigerator compartment 21 and the freezer compartment 25 via the first formation surface 521 having a large area. There is a risk of lowering. Therefore, when the first formation surface 521 faces the outside of the main body 11, the heat conduction path is reduced. Therefore, even when a temperature difference occurs between the refrigerator compartment 21 and the freezer compartment 25, heat transfer can be reduced and the cooling efficiency can be increased.

  By the way, the inner box 15 formed of resin or the like is easily deformed as compared with the metal outer box 17. Therefore, by arranging the first forming surface 521 so as to face the inside of the main body 11, the strength against bending and twisting inside the main body 11 can be increased. Therefore, when priority is given to improving the strength of the main body 11 over the cooling efficiency, the first forming surface 521 may be arranged facing the inner side of the main body 11. As described above, whether the first forming surface 521 of the reinforcing member 52 faces the outside or the inside of the main body 11 depends on whether the cooling efficiency is given priority or the strength improvement is given to the refrigerator 10. It can be determined according to the required performance.

  According to the first embodiment described above, the VIP 13 includes the reinforcing member 52. Thereby, even when the core material 51 such as glass wool cannot obtain sufficient strength, the strength of the VIP 13 is secured by the reinforcing member 52. Therefore, the strength when the main body 11 of the refrigerator 10 is configured using the VIP 13 as a structure can also be increased. Moreover, the strength of the refrigerator 10 is ensured by the reinforcing member 52 by applying the VIP 13 including the reinforcing member 52 to the refrigerator 10. Thereby, the main body 11 of the refrigerator 10 can reduce the thickness of each side wall including the right side wall 31 and the left side wall 32 by the VIP 13 having high heat insulation performance. Therefore, the volume of the storage chamber 16 of the refrigerator 10 can be increased without causing an increase in the installation area.

  In the first embodiment, the core material 51 covers the periphery of the reinforcing member 52. Therefore, the transfer of heat from the refrigerator compartment 21 or the freezer compartment 25 to the reinforcing member 52 is regulated by the core material 51. Further, by covering the periphery of the reinforcing member 52 with the core material 51, contact between the reinforcing member 52 and the packaging member 53 can be avoided. Therefore, it is possible to reduce the deterioration of the heat insulation performance due to the damage of the packaging member 53 and the damage of the packaging member 53.

  In the first embodiment, the core material 51 has a thin plate shape. Therefore, even when the core material 51 is divided into a plurality of layers in order to cover the periphery of the reinforcing member 52, an increase in the overall plate thickness of the VIP 13 can be suppressed. Therefore, an increase in the plate thickness of each side wall including the side walls 31 and 32 of the refrigerator 10 can be suppressed, and the volume of the storage chamber 16 of the refrigerator 10 can be increased without increasing the installation area.

  In the first embodiment, the thickness of the reinforcing member 52 is smaller than the total thickness of the core material 51 after being decompressed. Therefore, even when the VIP 13 is formed by reducing the pressure, the reinforcing member 52 does not come into contact with the packaging member 53. Therefore, it is possible to reduce the deterioration of the heat insulation performance due to the damage of the packaging member 53 and the damage of the packaging member 53.

  In the first embodiment, the reinforcing member 52 is provided obliquely in the VIP 13. And when VIP13 provided with this reinforcement member 52 is attached to the side walls 31 and 32 of the refrigerator 10, the upper end of the reinforcement member 52 of VIP13 is located in front of the main body 11, and the lower end is located behind the main body 11. Is provided obliquely. Thereby, the strength of the frame member 14 is increased by the reinforcing member 52 in front of the main body 11. Therefore, even if a load is applied to the frame member 14 from the support portion 47 of the right door 411 and the support portion 48 of the left door 412, the distortion of the frame member 14 is reduced. Therefore, the airtightness of the storage chamber 16 is ensured, and a decrease in cooling performance can be reduced.

(Second Embodiment)
A VIP according to the second embodiment is shown in FIG.
In the second embodiment, the reinforcing member 52 of the VIP 13 is provided obliquely with respect to the longitudinal direction of the core material 51 and intersects in the vicinity of the center. Thereby, the reinforcing member 52 is formed in X shape.
In 2nd Embodiment, the intensity | strength of VIP13 improves more by forming the reinforcement member 52 in X shape. Therefore, deformation such as distortion and twist of the frame member 14 can be further reduced with respect to the twisting force applied to the main body 11 of the refrigerator 10.

(Third embodiment)
FIG. 9 shows a VIP according to the third embodiment.
In the third embodiment, the packaging member 60 of the VIP 13 includes a first packaging member 61 and a second packaging member 62. The first packaging member 61 accommodates the core material 51 and the reinforcing member 52 and corresponds to the packaging member 53 in the first embodiment. On the other hand, the second packaging member 62 covers the outer side of the first packaging member 61 that accommodates the core material 51 and the reinforcing member 52. Accordingly, the first packaging member 61 is in contact with the core material 51, while the second packaging member 62 is in contact with only the first packaging member 61 without being in contact with the core material 51. Thus, the second packaging member 62 accommodates the unit panel 65 constituted by the core material 51, the reinforcing member 52, and the first packaging member 61. The second packaging member 62 may be formed of the same material as the first packaging member 61, or may be formed of a material different from that of the first packaging member 61. In FIG. 9, a space is shown between the first packaging member 61 and the second packaging member 62 for easy understanding. However, in the VIP 13 of the embodiment, the first packaging member 61 and the second packaging member 62 are in close contact with each other because the inside of the packaging member 60 is decompressed. The same applies to the following fourth embodiment.

In 3rd Embodiment, after accommodating the core material 51 and the reinforcement member 52 in the 1st packaging member 61, the inner side of the 1st packaging member 61 is pressure-reduced. Thereby, the unit panel 65 which is the primary VIP 13 is constituted by the first packaging member 61. At this time, after it is confirmed that the reinforcing member 52 accommodated in the first packaging member 61 is not in contact with the first packaging member 61 or does not damage the first packaging member 61, the first packaging member 61 The configured unit panel 65 is accommodated in the second packaging member 62. And the inside of the 2nd packaging member 62 is pressure-reduced in the state which accommodated the unit panel 65 in the 2nd packaging member 62, and VIP13 as a product is formed.
In the third embodiment, the core panel 51 is accommodated in the double first packaging member 61 and the second packaging member 62 by covering the unit panel 65 with the second packaging member 62. Therefore, the reliability of the VIP 13 can be increased.

(Fourth embodiment)
FIG. 10 shows a VIP according to the fourth embodiment.
The VIP 13 of the fourth embodiment is a modification of the third embodiment, and a surrounding core material 67 is further provided between the unit panel 65 constituted by the first packaging member 61 and the second packaging member 62. . The surrounding core material 67 may be the same material as the core material 51 or a different material. The surrounding core member 67 is provided at a position that overlaps at least the reinforcing member 52 accommodated in the unit panel 65.

  In the fourth embodiment, the unit panel 65 is further covered with the surrounding core material 67. Therefore, even if the first packaging member 61 is damaged by the reinforcing member 52 of the unit panel 65, the contact between the reinforcing member 52 and the second packaging member 62 is hindered by the surrounding core material 67. Therefore, damage to the second packaging member 62 due to the reinforcing member 52 can be reduced, and reliability can be improved.

(Other embodiments)
In the embodiments described above, the reinforcing member 52 having an L-shaped cross section having the first forming surface 521 and the second forming surface 522 has been described as an example. However, the reinforcing member 52 may have a flat plate shape without the corner portion 523. Further, the reinforcing member 52 may have a T-shaped cross section so that the second forming surface 522 is connected in the vicinity of the center in the width direction of the first forming surface 521 as shown in FIG. Furthermore, as shown in FIG. 12, the reinforcing member 52 may have a “+”-shaped cross section in which two plate-like members intersect with each other near the center.
Even when the cross-sectional shape of the reinforcing member 52 is arbitrarily set as described above, a forming surface having a large area among a plurality of forming surfaces is set so as to face the inner box 15 or the outer box 17 according to the purpose. Can do.

  Further, the refrigerator 10 may be filled with a foamed resin portion such as urethane in a place where it is difficult to arrange the VIP 13, for example. In this case, the volume of the VIP 13 occupying the entire volume of the refrigerator 10 is set larger than the volume of the foamed resin portion. Thereby, the refrigerator 10 mainly insulates the VIP 13 and supplementarily insulates the foamed resin portion. Therefore, even if the thickness is reduced as compared with the foamed resin portion, it is possible to insulate with the VIP 13 having high heat insulation, and the volume of the storage chamber 16 can be expanded without causing an increase in installation size.

  Furthermore, the refrigerator 10 demonstrated the example in which VIP13 contact | connects the inner box 15 and the outer box 17. FIG. However, the foamed resin portion 70 may be filled between the VIP 13 and the inner box 15 and between the VIP 13 and the outer box 17 as shown in FIG. In this case, in the thickness direction of the main body 11 connecting the storage chamber 16 side of the main body 11 and the outside, the thickness of the portion in which the reinforcing member 52 of the VIP 13 is accommodated is set to be larger than the thickness of the foamed resin portion 70. The That is, the thickness of the foamed resin portion 70 is smaller than the thickness of the VIP 13 including the reinforcing member 52. Thus, the foamed resin portion 70 serves as an aid for heat insulation by the VIP 13. As a result, the heat insulation of the refrigerator 10 is secured by the VIP 13 and the strength of the refrigerator 10 is secured by the reinforcing member 52 of the VIP 13. Therefore, it is possible to achieve both heat insulation and strength while reducing the thickness of the side walls 31 and 32 of the refrigerator 10, and the volume can be increased without increasing the size of the refrigerator 10.

  Further, in the plurality of embodiments, an example in which the inner box 15 and the outer box 17 are attached to the frame member 14 and the VIP 13 is sandwiched between the inner box 15 and the outer box 17 has been described. However, it is good also as a structure which abolishes the frame member 14 and forms all the structures of the refrigerator 10 with VIP13. In addition, the VIP 13 is not provided on the side wall 31 and the side wall 32, respectively. For example, the side wall 31, the top wall, and the side wall 32 are integrally formed, and the side wall 31, the top wall, and the side wall 32 are formed by bending them. Also good. Anyway, in said embodiment, providing the reinforcement member 52 in VIP13 is demonstrated, and the wall part to which VIP13 is applied is not specified.

  As mentioned above, although several embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 10 is a refrigerator, 11 is a main body, 12 is a door member, 13 is VIP, 15 is an inner box, 17 is an outer box, 47 and 48 are support parts, 51 is a core material, 52 is a reinforcing member, and 53 and 60 Is a packaging member, 61 is a first packaging member, 62 is a second packaging member, 67 is an enclosing core material, 70 is a foamed resin portion, 521 is a first forming surface, and 522 is a second forming surface.

Claims (11)

A rectangular thin flat plate heat insulation panel having a long side and a short side,
Core material,
The core material covers the periphery, and extends from one end of the core material along the rectangular diagonal line to the other end opposite thereto, and the long side and the reinforcing member longer than the short side ,
A packaging member for accommodating the core material and the reinforcing member inside in an airtight reduced pressure state;
Vacuum insulation panel comprising. The vacuum insulation panel according to claim 1, wherein the packaging member includes a first packaging member that contacts the core material, and a second packaging member that covers an outside of the first packaging member that houses the core material and the reinforcing member. . The vacuum heat insulation panel of Claim 2 further provided with the surrounding core material provided between said 1st packaging member and said 2nd packaging member. The vacuum thermal insulation panel according to any one of claims 1 to 3, wherein a thickness of the reinforcing member is smaller than a sum of thicknesses of the core members after being decompressed in the thickness direction .
The vacuum insulation panel according to any one of claims 1 to 4, wherein the reinforcing member has an X shape that intersects in the vicinity of the center. A refrigerator provided with the vacuum heat insulation panel as described in any one of Claims 1-5. The box-shaped main body to which the vacuum heat insulation panel is attached and one end in the front-rear direction is open,
A door member that opens and closes the opening of the main body by rotating around a support portion provided at at least one end in the left-right direction of the main body forming the opening;
The refrigerator according to claim 6, wherein at least a part of the reinforcing member is inclined upward in the vertical direction toward the front of the main body and downward toward the rear of the main body. The reinforcing member is bent along the longitudinal direction to form two or more forming surfaces having different areas, and the forming surface having the largest area faces the outside of the main body. Item 8. A refrigerator according to item 6 or 7. A metal outer box covering the outside of the vacuum insulation panel attached to the main body,
A resin inner box covering the inside of the vacuum heat insulation panel attached to the main body, and
The reinforcing member is bent along a longitudinal direction to form two or more formation surfaces having different areas, and the formation surface having the largest area faces the inner box among the formation surfaces. The refrigerator according to 6 or 7. Further comprising a foamed resin portion that insulates the inside and outside of the main body together with the vacuum insulation panel,
The refrigerator according to any one of claims 6 to 9, wherein a volume of the vacuum heat insulating panel is larger than a volume of the foamed resin portion. Further comprising a foamed resin portion that insulates the inside and outside of the main body together with the vacuum insulation panel,
The thickness of the vacuum insulation panel in which the reinforcing member is accommodated in the thickness direction connecting the inner side and the outer side of the main body is greater than the thickness of the foamed resin portion. A refrigerator according to claim 1.

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