JP2007056905A - Heat insulating structure and heat insulating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating structure having high heat insulating performance and resistance to impact and loads. <P>SOLUTION: The heat insulating structure 1 comprises two outer plates 2, 2 arranged opposing each other at a predetermined space, vacuum structured heat insulating members 4 arranged in matrix to partition an internal space 3 formed between the outer plates 2, 2 lengthwise and crosswise, and supporting members 7 arranged at the intersections of lengthwise and crosswise gap spaces 5, 6 of the heating insulating members 4 arranged in matrix and thicker than the heating insulating members 4 for contacting the outer plates 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat insulating structure and a heat insulating container that have high heat insulating performance and are strong against impact and load resistance.

  For example, Patent Document 1 discloses a heat insulating structure used for containers, refrigerators, and the like. This heat insulating structure, after fixing the vacuum-formed molded heat insulation panel to the upper surface of the substrate formed in a box shape with an adhesive, arrange the cover plate also formed in a box shape at regular intervals, A heat insulating structure has been proposed in which a polyurethane farm resin having a closed cell structure is injected and foamed in a gap portion between the substrate and the cover plate.

This molded heat insulation panel is filled with silica powder in an inner bag made of a material having air permeability such as paper or nonwoven fabric, and then the end of the bag is closed and then press-pressed to form a desired shape ( Trapped in a trapezoidal shape, and the press-pressed product is stored in a non-breathable outer bag made of synthetic resin film, etc., then the inside of the outer bag is evacuated and then the end of the outer bag is closed. It is configured by
Japanese Patent No. 2591977

  However, in the heat insulating structure described in Patent Document 1, since the molded heat insulating panel is firmly fixed to the substrate with an adhesive, the internal heat is transmitted through the surface of the heat insulating panel and is radiated. In this heat insulating structure, the inner bag is made of paper or non-woven fabric, and the outer bag is made of a synthetic resin film. Therefore, when a large load is applied or an impact is applied, the outer bag In addition, there is a possibility that the inner bag may be torn, and it is considered that the heat insulation power is reduced.

  Then, an object of this invention is to provide the heat insulation structure and heat insulation container with high heat insulation performance and strong with respect to an impact or a load resistance.

  The heat insulating structure according to the present invention includes two outer plates disposed opposite to each other at a predetermined interval, and a vacuum structure heat insulating member arranged in a matrix so as to partition an internal space formed between the outer plates vertically and horizontally. The support members are arranged at the intersections of the gap spaces in the vertical and horizontal directions of the heat insulating members arranged in a matrix, and are thicker than the heat insulating members and are in contact with the outer plate.

  According to the heat insulating structure of the present invention, in addition to the heat insulating member arranged in a matrix in the internal space between the two outer plates, the support member that is thicker than the thickness of the heat insulating member and contacts the outer plate is arranged. It is possible to minimize heat leakage that is transferred to the outside of the outer plate by heat conduction through the surface material of the heat insulating member, and heat insulating performance can be improved.

  Further, according to the present invention, when an impact or load is applied to the heat insulation structure, the support member receives them, so the impact and load applied to the heat insulation member can be reduced, and the impact and load resistance can be reduced. Can be increased.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

“First Embodiment”
FIG. 1 shows a heat insulating structure according to the first embodiment, (A) is a plan view of the heat insulating structure, (B) is a cross-sectional view taken along line A-A, and FIG. 2 is a heat insulating structure according to the first embodiment. A structure is shown, (A) is a perspective view of a heat insulation structure, (B) is the BB sectional drawing.

  As shown in FIGS. 1 and 2, the heat insulating structure 1 according to the first embodiment includes two outer plates 2 and 2 that are arranged to face each other at a predetermined interval, and between these outer plates 2 and 2. The heat insulating member 4 having a vacuum structure arranged in a matrix so as to partition the formed internal space 3 vertically and horizontally, and the intersections of the gap spaces 5 and 6 in the vertical and horizontal directions of the heat insulating member 4 arranged in a matrix are arranged, respectively. And a support member 7 that is in contact with the outer plate 2.

  The outer plate 2 is formed of a highly rigid member such as PP (polypropylene) or fiber reinforced plastic (FRP), for example, and is extremely resistant to external factors (such as hopping or impact due to collision). In the present embodiment, the outer plate 2 has a substantially rectangular plane shape, and the two outer plates 2 are arranged to face each other at a predetermined interval.

  As shown in FIG. 2, the heat insulating member 4 includes a core member 8 and a sheet member 9 that covers the core member 8, and the inside covered with the sheet member 9 is evacuated. For the core material 8, for example, porous glass wool or polyurethane foam having low thermal conductivity is used. The sheet member 9 covers the entire core material 8 so as to wrap, and the outer periphery thereof is heat-sealed. For the sheet member 9, a resin film having a low gas permeability such as PE (polyethylene) or PP is used so as to maintain an internal vacuum state.

The heat insulating member 4 has a substantially rectangular shape in a plane, and is arranged in a matrix so as to partition the internal space 3 formed between the outer plates 2 and 2 vertically and horizontally. For example, the heat insulating members 4 are arranged at predetermined intervals in four rows and four rows. The heat insulating member 4 is fixed to the outer plates 2 and 2 with a double-sided tape. The support member 7 is made of, for example, a highly rigid ceramic material, and has a spherical shape, for example. The support member 7 is thicker than the heat insulating member 4. In other words, the diameter of the support member 7 formed into a sphere with a highly rigid material is larger than the thickness of the heat insulating member 4. Therefore, the support member 7 makes point contact with the upper and lower outer plates 2 and 2, respectively.

  Such support members 7 are arranged at the intersections of the gap spaces 5 and 6 in the vertical and horizontal directions of the heat insulating members 4 arranged in a matrix. The gap spaces 5 and 6 indicate linear spaces formed between the columns and the rows of the heat insulating members 4 arranged vertically and horizontally, respectively. The support member 7 is simply arranged between the upper and lower outer plates 2 and 2 without being fixed with an adhesive.

  According to the heat insulating structure 1 configured as described above, since the heat insulating member 4 does not directly contact the outer plate 2 and the support member 7 and the outer plate 2 are in point contact, the outer plate from the surface of the heat insulating member. The heat leak transmitted through 2 can be minimized, and the heat insulation performance can be enhanced.

  Further, according to the present embodiment, when an impact or load is applied to the heat insulating structure 1, the support member 7 receives them, so that the impact and load applied to the heat insulating member 4 can be reduced. Impact and load resistance can be increased.

  Moreover, according to this Embodiment, since the supporting member 7 was formed from the ceramic material, compressive stress increases with the rigidity of itself, and thermal conductivity is also suppressed.

“Second Embodiment”
FIG. 3 is an enlarged cross-sectional view of a main part of the heat insulating structure according to the second embodiment.

  In the second embodiment, a spherical portion 10 that receives a support member 7 that is a sphere is formed on the inner surface 2 a of one outer plate 2. The spherical surface portion 10 has a curved surface shape corresponding to the outer diameter shape of the support member 7 that is a sphere, and is in a point contact state in the first embodiment, but its contact area is increased.

  According to the heat insulating structure 1 of the present embodiment configured as described above, the spherical surface 10 that receives the support member 7 that is a sphere is formed on the inner surface 2a of the outer plate 2, so that the heat insulating structure 1 is impacted. When a load is applied, the amount of deformation from the support member 7 to the outer plate 2 is suppressed as much as possible, and the stress to the support member 7 is also dispersed.

“Third Embodiment”
4A and 4B show a heat insulating structure according to the third embodiment. FIG. 4A is a plan view of the heat insulating structure, and FIG.

  In 3rd Embodiment, the inclined surface 4a is provided in the site | part which opposes the said supporting member 7 among the heat insulation members 4 made into planar substantially rectangular shape. Therefore, when viewed with the support member 7 as the center, the four heat insulating members 4 arranged around the support member 7 have a substantially rectangular shape surrounding the support member 7 as the center.

  According to the heat insulating structure 1 of the present embodiment configured as described above, the size of the heat insulating member 4 is limited by forming the inclined surface 4a on the portion of the heat insulating member 4 facing the support member 7. It is possible to further increase the heat insulation performance.

“Fourth Embodiment”
FIG. 5 is an enlarged cross-sectional view of the main part of the heat insulation structure according to the fourth embodiment. FIG. 5A shows a state in which the support member is fixed to the outer plate with a fixing member, and FIG. The state fixed to the outer plate is shown.

  In the fourth embodiment, the support member 7 is fixed to one outer plate 2 by a fixing means. In FIG. 5A, for example, an adhesive 11 is used as a fixing means, and the support member 7 is fixed to the outer plate 2 with the adhesive 11. In FIG. 5B, a bolt 12 is used as a fixing means, and the support member 7 is fixed to the outer plate 2 with the bolt 12. A rivet may be used instead of the bolt 12. When the supporting member 7 is fixed to the outer plate 2 with the bolts 12, it is desirable that the fixing side of the supporting member 7 be a flat surface in order to ensure stability.

  According to the heat insulation structure 1 of the present embodiment configured as described above, if the support member 7 is fixed to one outer plate 2 by a fixing means, the heat insulation member 4 is positioned using the support member 7 as a mark. In addition, the assembly with the other outer plate 2 can be easily performed.

“Fifth Embodiment”
FIG. 6 is a cross-sectional view showing a main part of a heat insulating structure according to the fifth embodiment.

  In the fifth embodiment, a receiving portion 13 having a higher altitude than that of the outer plate 2 is provided at a portion of the outer plate 2 with which the support member 7 comes into contact. The receiving portion 13 protrudes from the inner surface 2a of the outer plate 2 toward the support member 7 and has a curved surface 13a corresponding to the outer diameter shape of the support member 7 that is a sphere. Other structures are the same as those in FIG.

  According to the heat insulating structure 1 of the present embodiment configured as described above, the receiving portion 13 having a higher altitude than the outer plate 2 is provided at a position corresponding to the support member 7. Since the contact is not a point contact but a surface contact, when the impact or load is applied to the heat insulating structure 1, the support member 7 receives them, so the impact or load applied to the heat insulating member 4 can be reduced, These impacts and load resistance can be increased.

  In addition, according to the present embodiment, since the rigidity is increased by providing the receiving portion 13 having a higher altitude than the outer plate 2, the thin portion in which the thickness of the outer plate 2 on which the receiving portion 13 is provided is partially reduced. 14 can be provided to reduce the weight of the outer plate 2.

“Sixth Embodiment”
7A and 7B are enlarged cross-sectional views of the main part of the heat insulating structure according to the sixth embodiment. FIG. 7A shows a state in which the support member is supported by a leaf spring, and FIG. 7B shows a state in which the support member is supported by a coil spring. Indicates.

  In the sixth embodiment, the support member 7 is supported by an elastic member, and the support member 7 is biased toward one outer plate 2 by the elastic force of the elastic member. In FIG. 7A, a plate spring 15 that supports the support member 7 is provided on one outer plate 2, and the support member 7 is pressed against the receiving portion 13 by the elastic force of the plate spring 15. In FIG. 7B, a coil spring 16 is provided on the outer plate 2, and the support member 7 is pressed against the other outer plate 2 by the elastic force of the coil spring 16.

  According to the heat insulation structure 1 configured as described above, the support member 7 is pressed against the outer plate 2 by the elastic force of the leaf spring 15 or the coil spring 16, and thus the support member 7 when the heat insulation structure 1 is bent. And sliding contact between the outer plate 2 and the outer plate 2 can be eliminated.

“Seventh Embodiment”
FIG. 8 is a cross-sectional view of the heat insulating container of the seventh embodiment.

  In the seventh embodiment, the heat insulating container 20 is constituted by the container main body 17 configured using the heat insulating structure described in the first to sixth embodiments and the lid 19 having the flange 18. is doing.

  The container main body 17 is composed of the heat insulating structure 1 described above, and is formed as a box having an upper opening. The lid 19 is sized to close the opening of the container body 17 and has a flange 18 that is in close contact with the outer peripheral wall 17 a on the opening side of the container body 17. And the length L of the site | part which the collar part 18 overlaps with the container main body 17 is made into the same thermal resistance value as the thermal resistance value of the heat insulation member 4 itself.

  According to the heat insulating structure 1 configured as described above, the heat insulating member 4 has two layers in the portion where the collar portion 18 of the lid 19 attached to the container main body 17 overlaps the container main body 17. The thermal resistance of this part becomes large, and the heat leak from the outer plate 2 can be suppressed.

  In addition, according to the present embodiment, the length L of the portion where the flange portion 18 overlaps the container body 17 is set to the same thermal resistance value as the thermal resistance value of the heat insulating member 4 itself. Thus, the high heat transfer portion is eliminated, and the increase of the heat insulating member 4 can be minimized.

The heat insulation structure of 1st Embodiment is shown, (A) is a top view of a heat insulation structure, (B) is the AA sectional view taken on the line. The heat insulation structure of 1st Embodiment is shown, (A) is a perspective view of a heat insulation structure, (B) is the BB sectional drawing. It is a principal part expanded sectional view of the heat insulation structure of 2nd Embodiment. The heat insulation structure of 3rd Embodiment is shown, (A) is a top view of a heat insulation structure, (B) is the CC sectional view taken on the line. It is a principal part expanded sectional view of the heat insulation structure of 4th Embodiment, (A) shows the state which fixed the supporting member to the outer plate with the fixing member, (B) shows the supporting member on the outer plate with the bolt. Indicates a fixed state. It is sectional drawing which shows the principal part of the heat insulation structure of 5th Embodiment. It is a principal part expanded sectional view of the heat insulation structure of 6th Embodiment, (A) shows the state which supported the supporting member with the leaf | plate spring, (B) shows the state which supported the supporting member with the coil spring. It is sectional drawing of the heat insulation container of 7th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Thermal insulation structure 2 ... Outer plate 3 ... Internal space 4 ... Thermal insulation member 4a ... Inclined surface 5, 6 ... Gap space 7 ... Support member 10 ... Spherical surface part 11 ... Adhesive (fixing means)
12 ... Bolt (fixing means)
13 ... receiving part 15 ... leaf spring (elastic member)
16 ... Coil spring (elastic member)
17 ... Container body 18 ... Buttocks 19 ... Lid 20 ... Insulated container

Claims (9)

Two outer plates facing each other at a predetermined interval;
A heat insulating member having a vacuum structure arranged in a matrix so as to partition the internal space formed between the outer plates vertically and horizontally;
A heat insulating structure comprising: a supporting member disposed at each of intersections of gap spaces in the vertical and horizontal directions of the heat insulating members arranged in a matrix and having a thickness larger than the thickness of the heat insulating member and contacting the outer plate. The heat insulating structure according to claim 1,
The support member is a sphere, and a spherical portion that receives the sphere is formed on an inner surface of at least one of the outer plates. The heat insulation structure according to claim 1 or 2,
A heat insulating structure characterized in that the heat insulating member has a substantially rectangular shape on a plane, and an inclined surface is provided at a portion facing the support member. A heat insulating structure according to any one of claims 1 to 3,
The heat insulating structure, wherein the support member is made of a ceramic material. The heat insulating structure according to any one of claims 1 to 4,
The support member is fixed to one outer plate by a fixing means. A heat insulating structure according to any one of claims 1 to 5,
A heat insulating structure characterized in that a receiving portion having a height higher than that of the outer plate is provided at a portion of the outer plate in contact with the support member. A heat insulating structure according to any one of claims 1 to 6,
The heat insulating structure, wherein the support member is supported by an elastic member, and the support member is urged toward one outer plate by the elastic force of the elastic member. A heat insulating container comprising: a container main body configured using the heat insulating structure according to any one of claims 1 to 7; and a lid body having a flange. The insulated container according to claim 8,
The container body and the lid constitute a combined container, and the length of the portion where the flange overlaps the container body is the same as the thermal resistance value in the thickness direction of the heat insulating member in the heat insulating structure. An insulated container characterized by having a resistance value.

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