JP2014219062A - Heat insulating panel - Google Patents

Abstract

There is provided a heat insulating panel capable of maintaining a predetermined strength without forming a cavity due to a thick portion due to a fin portion of a vacuum heat insulating material in a digging recess of a base material. A vacuum heat insulating material (20) has thick portions (24, 24) formed by folding back peripheral fin portions (22, 22) on a surface of a base material (10) facing a bottom portion (11a) of a digging recess (11). In addition, the bottom 11a of the digging recess 11 is formed with recesses 11b and 11b which are locally recessed further than the surface of the bottom 11a, and the thick part 24 of the vacuum heat insulating material 20 is formed in the recesses 11b and 11b. , 24 are accommodated. [Selection] Figure 1

Description

  The present invention relates to an improvement of a heat insulating panel in which a vacuum heat insulating material is accommodated in a space of a digging recess of a base material.

  Conventionally, various heat insulation panels have been proposed in which a vacuum heat insulating material is accommodated in a space of a digging recess of a base material (see, for example, Patent Document 1).

  The vacuum heat insulating material used for the heat insulation panel has a fin part formed by heat-welding the end of the aluminum wrapping material on the periphery of the main body, and the fin part is folded back to one side of the main body. It is customary to use. The end of one panel surface increases in thickness due to the folding of the fin. In particular, the corners where two adjacent fins overlap are naturally thick.

  Therefore, it was necessary to make the digging recess of the base material accommodating the vacuum heat insulating material into a depth dimension in consideration of the thickness of the thick portion formed by folding the fin portion.

JP 2008-50835 A

  However, if the digging recess is deepened according to the thickness of the thickened portion, the thickness of the surface portion (bottom) of the base material corresponding to the bottom side of the digging recess is reduced, so the strength of the surface portion is Naturally it falls. In particular, a cavity is formed between the bottom of the digging recess and the central surface of the vacuum heat insulating material where the thick part is not formed, and there is a possibility that problems such as bending due to a certain load such as a stepping load may occur. is there.

  If the vacuum heat insulating material is arranged so that the thick part faces the opening side of the digging recess of the base material, there is no cavity on the bottom side, but the space between the vacuum heat insulating material and the back surface material that closes the opening. Since there is a similar cavity, such an arrangement does not solve the essential problem.

  The present invention has been proposed in consideration of such circumstances, the purpose of which is that the cavity due to the thick portion due to the fin portion of the vacuum heat insulating material is not formed in the digging recess of the base material, It is providing the heat insulation panel which can maintain predetermined intensity | strength.

  In order to achieve the above object, the heat insulating panel of the present invention is a heat insulating panel in which a vacuum heat insulating material is accommodated in a space of a base material digging recess, and the vacuum heat insulating material is relative to the bottom of the digging recess. The surface has a thickened portion formed by folding back the peripheral fin, and the bottom of the digging recess has a recess that is locally recessed further than the bottom surface, A thick portion of the vacuum heat insulating material is accommodated in the recess.

  Further, in the present invention, the thick portion may be formed at the corner of the vacuum heat insulating material by folding and polymerizing the fins of the two adjacent edges of the vacuum heat insulating material. It is good also as what was formed in the corner of the digging recess corresponding to the corner | angular part of a heat insulating material.

  Furthermore, in this invention, it is good also as a structure which formed the additional heat insulation layer in the bottom part of a recessed part.

  According to the heat insulation panel of the present invention, since it has the above-described configuration, a cavity due to the thick portion due to the fin portion of the vacuum heat insulating material is not formed in the digging recess of the base material, and a predetermined strength is obtained. Can be maintained.

It is explanatory drawing of the heat insulation panel which concerns on one Embodiment of this invention. (A) is the longitudinal cross-sectional view of the heat insulation panel corresponding to the AA line of FIG. 2, (b) is the decomposition | disassembly longitudinal cross-sectional view. It is the disassembled perspective view which abbreviate | omitted illustration of a part (back surface material) of the heat insulation panel in the state which faced the opening side of the base material. (A) is a top view of a vacuum heat insulating material, (b) is the BB sectional drawing of (a). It is explanatory drawing of the heat insulation panel which concerns on other embodiment of this invention. (A) is the longitudinal cross-sectional view of the heat insulation panel, (b) is an exploded vertical cross-sectional view.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The heat insulation panel 1 shown in FIGS. 1 and 2 is used as a heat insulation panel for building materials used for floor panels, wall panels, ceiling panels, and the like. Such a heat insulation panel 1 is constructed with the back side fixed to a construction object such as a floor foundation, a wall foundation, or a ceiling foundation.

  This heat insulating panel accommodates the vacuum heat insulating material 20 in the space of the digging recess 11 of the base material 10 and closes the opening of the digging recess 11 with a back material 30 made of MDF (medium density fiberboard) or the like. Is.

  The base material 10 is made of a wood material having a rectangular shape in plan view, and has a digging recess 11 having an open back side. A surface portion (the bottom portion 11 a of the digging recess 11) is formed on the surface side of the base material 10, and a frame portion 12 is formed on the four circumference sides of the digging recess 11. In addition, the raw material of the base material 10 is not restricted to wood, A metal, a synthetic resin, etc. may be sufficient.

  Rectangular recesses 11b, 11b,... Are formed at the four corners of the inner bottom surface of the bottom 11a of the digging recess 11. Further, stepped portions 13 and 13 are formed on the opening side of the digging recess 11. The opening of the heat insulating panel 1 is closed by fitting the back surface material 30 into the steps 13 and 13 on the opening side. In addition, illustration of the back surface material 30 was abbreviate | omitted in FIG. Further, a male part 14 is formed at one end in the width direction of the base material 10, and a female part 15 is formed at the other end.

  As shown in FIG. 3A, the vacuum heat insulating material 20 has a rectangular shape in plan view and can be accommodated in the digging recess 11 of the base material 10, and the size of the vacuum heat insulating material 20 is digging. The inner dimension of the recess 11 is generally matched.

  As shown in FIG. 3B, the vacuum heat insulating material 20 is formed by vacuum-sucking a core material 20a with a gas barrier packaging material 20b. The core material 20a may be made of a foamed material such as open-cell urethane foam, styrene foam, or phenol foam using a material having a relatively low thermal conductivity. Alternatively, the core material 20a may be made by pulverizing various foam materials, or made of powder such as silica, alumina, or pearlite, and made of fiber such as glass fiber, glass wool, rock wool, or cellulose fiber. It is good. Furthermore, you may make it mix and use the above-mentioned various foams, a granular material, and a fiber body as the core material 20a.

  As the packaging material 20b, a metal film such as an aluminum foil having a gas barrier property is used. Alternatively, a protective layer such as a resin film is provided on the outer layer side, a gas barrier layer such as a metal film or a metal vapor deposition layer is provided in the middle, and a heat welding layer such as a resin film having heat weldability is provided on the inner layer side (core material 20a side). A laminated film (sheet) may be used as the packaging material 20b. In addition to the core material 20a, a moisture adsorbent (not shown) is also stored in the packaging material 20b.

  In the vacuum heat insulating material 20 configured in this way, fin portions 22, 22,... Formed by thermally welding the double-sided packaging material 20b are formed on the periphery. The fin portions 22, 22,... Are formed on two long sides and two short sides, respectively.

  As shown in FIG. 3A, the vacuum heat insulating material 20 is formed by folding and bonding the fin portions 22, 22,... To one surface of the vacuum heat insulating material main body (hereinafter referred to as the mounting surface 21). Yes. As the fin portions 22 and 22 are folded and fixed in this manner, the four corners of the mounting surface 21 of the vacuum heat insulating material main body have long side fin portions 22 and 22 and a short side adjacent to the long side. The side fin portions 22, 22 are superposed to form thick portions 24, 24,.

  Thus, the vacuum heat insulating material 20 housed in the heat insulating panel 1 has thick portions 24, 24,... Protruding from the central portion of the mounting surface 21 at the corners of the mounting surface 21. doing.

  The vacuum heat insulating material 20 is accommodated in the space of the digging recess 11 so that the mounting surface 21 faces the bottom 11 a of the digging recess 11. And the thick parts 24 and 24 of the vacuum heat insulating material 20 are accommodated in the recessed parts 11b and 11b formed in the corner part of the digging recess 11 of the base material 10, as shown in FIG. 1, FIG. . Further, portions of the mounting surface 21 of the vacuum heat insulating material 20 other than the thick portions 24 and 24 are in contact with the surface of the bottom portion 11a other than the concave portions 11b and 11b of the digging recess 11.

  Thus, since the recesses 11b and 11b are formed at the corners of the digging recess 11 of the base material 10, the vacuum heat insulating material 20 is arranged so as to contact the inner bottom surface of the bottom 11a of the digging recess 11. Can be set. As a result, a cavity is not formed between the vacuum heat insulating material 20 of the heat insulating panel 1 and the bottom 11a of the digging recess 11, and the heat insulating panel 1 is maintained at a predetermined strength. For example, the surface portion of the base material 10 does not bend even when it is stepped on, and the occurrence of damage and breakage of the heat insulating panel 1 due to the bending can be reduced.

  If the wall thickness 24, 24 is dug into contact with the inner bottom surface of the bottom 11a of the recess 11 and the vacuum heat insulating material 20 is built in, the vacuum heat insulating material is the same when the outer dimensions of the base material 10 are the same. In order to dig 20 and accommodate it in the recess 11, the thickness of the surface portion of the substrate 10 must be reduced. Thus, as in the present embodiment, by providing the recesses 11b and 11b for accommodating the thick portions 24 and 24 of the vacuum heat insulating material 20, the surface portion of the substrate 10 can be thickened, and the substrate 10 itself The strength of the can also be increased.

  Next, a heat insulating panel according to another embodiment of the present invention will be described with reference to FIG.

  This heat insulation panel 1 uses the same thing as the thing of FIG. 1 about the base material 10, the vacuum heat insulating material 20, and the back surface material 30, but this heat insulation panel 1 further includes additional heat insulation layers 40 and 40. It has.

  The additional heat insulating layers 40, 40 are formed on the bottom side of the concave portions 11 b, 11 b of the digging recess 11 so as to be sandwiched between the bottom portion and the thick portions 24, 24 of the vacuum heat insulating material 20. The additional heat insulating layers 40, 40 are made of a heat insulating material made of a foamed resin molded body such as a hard urethane foam or an extruded polystyrene foam.

  The thick portion 24 of the vacuum heat insulating material 20 is formed by overlapping the fin portions 22 and 22 (see FIG. 3). By providing 40, it can prevent becoming a thermal bridge.

  In the present specification, as described above, an example in which the recesses 11b are provided at the four corners of the digging recess 11 is shown, but matches the entire length of the fin portion 22 that is folded back on the long side of the vacuum heat insulating material 20. As described above, a long one may be dug and provided on the long side of the recess 11.

  As an example of the above-described two embodiments, the heat insulating panel 1 in which one vacuum heat insulating material 20 is installed in one base material 10 is shown, but the heat insulating panel in which a plurality of vacuum heat insulating materials 20 are installed in one base material 10. 1 is also applicable.

  For example, a total of four digging recesses 11 are formed side by side in the longitudinal direction and the width direction in the base material 10, and the vacuum heat insulating material 20 is accommodated in each of the digging recesses 11. Good. Also in such a thing, what is necessary is just to set it as the structure which provided the recessed part 11b in the corner part of each digging recess 11, and accommodated the vacuum heat insulating material 20 which has the thick part 24 in each.

  Moreover, the heat insulation panel 1 of this embodiment can also be comprised as a floor heating panel by incorporating a planar heating element in the dug recess 11. Furthermore, the heat insulating panel 1 may be a foamed heat insulating material filled around the vacuum heat insulating material 20 in the digging recess 11.

DESCRIPTION OF SYMBOLS 1 Thermal insulation panel 10 Base material 11 Digging recess 11a Bottom part 11b Recessed part 12 Frame part 13 Step part 14 Male real part 15 Female real part 20 Vacuum heat insulating material 21 Mounting surface 22 Fin part 24 Thick part 30 Back surface material 40 Additional heat insulation layer

Claims (3)

In the heat insulation panel that houses the vacuum heat insulating material in the recess space of the base material digging,
The vacuum heat insulating material has a thick portion formed by folding back a peripheral fin portion on a surface facing the bottom of the digging recess,
The bottom portion of the digging recess is formed with a recess that is locally recessed further than the surface of the bottom, and the thick portion of the vacuum heat insulating material is accommodated in the recess. Insulation panel. In claim 1,
The thick part is formed at the corner of the vacuum heat insulating material by folding and polymerizing the fins of the two adjacent edges of the vacuum heat insulating material,
The said recessed part is formed in the corner of the said digging recess corresponding to the said corner | angular part of the said vacuum heat insulating material, The heat insulation panel characterized by the above-mentioned. In claim 1 or 2,
The heat insulation panel characterized by forming the additional heat insulation layer in the bottom part of the said recessed part.

Images