JP2013228016A - Vacuum heat insulating material, method of manufacturing the same, and heat insulated device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material allowing molding into a three-dimensional desired shape, increasing a coverage rate of a heat insulated part to improve heat insulation performance, a method of manufacturing the vacuum heat insulating material, and a heat insulated device.SOLUTION: A vacuum heat insulating material includes: a core part 2; and a packing part 3 having a molded packing part 31 of a portion molded by three-dimensional molding and covering the core part 2 to hold the inside in a depressurized state. In the packing part 3, the thickness of the molded packing part 31 molded by the three-dimensional molding is larger than the thickness of the other portions of the packing part 31.

Description

  The present invention relates to a vacuum heat insulating material, a vacuum heat insulating material manufacturing method, and a heat insulating device that can be molded into a desired three-dimensional shape, increase the coverage of the heat insulating portion, and improve the heat insulation performance. is there.

  In recent years, environmental protection has been greatly screamed, and energy saving of home appliances, homes, vehicles, and the like has become increasingly important. As an example, even in a water heater, there is a movement to reduce power consumption by improving the heat retention efficiency of a hot water storage tank, and a highly heat-insulating structure is strongly demanded. And this is realized by the heat insulation structure which coat | covers the heat insulation body which comprised the vacuum heat insulating material excellent in heat insulation performance, foamable resin, etc. to the applicable location. In order to further improve the heat insulation efficiency of the hot water storage tank, a vacuum heat insulating material is actively disposed on the outer periphery of the hot water storage tank and the three-dimensional curved surface part of the upper and lower end panels to increase the coverage. The vacuum insulation material that has been vacuum-formed into a flat plate shape is generally adopted because of manufacturing problems and is incorporated in the equipment, but the part that requires heat insulation is not only a flat part, but also a heat insulation structure It is not suitable for the shape required for the above. As a method of using a flat plate-shaped vacuum heat insulating material, in addition to a method of using a flat plate-shaped heat insulating material as it is, a vacuum-formed heat insulating material whose shape is deformed by post-processing such as a press, for example, It is common to form a groove in the flat surface portion of the vacuum heat insulating material and apply a flat plate heat insulating material with flexibility to the target heat insulating portion (for example, see Patent Document 1).

Japanese Patent No. 3478780 (page 2, lines 78-99, FIG. 1)

  The conventional vacuum heat insulating material is a very rigid heat insulating material in which the inside of the packaging part is decompressed when the plate-shaped vacuum heat insulating material is easily post-processed into a desired shape. There was a problem that it caused cracks and tears and caused a significant deterioration in heat insulation performance as a vacuum heat insulator. Moreover, the flexibility of the flat plate-shaped heat insulating material can be improved by adjusting the stacking amount of the core portion housed in the vacuum heat insulating material as in Patent Document 1 in advance and forming a groove in the plane portion perpendicular to the thickness direction. However, in this case, it is useful as a heat insulator for a shape part that needs to be bent, but it is desirable for a shape having a three-dimensional curved surface such as a water heater tank circumference. There is a problem that it is not sufficiently adapted as a heat insulating structure for processing into a shape and increasing the coverage.

  The present invention has been made to solve the above-described problems, and can be formed into a three-dimensional desired shape, can increase the coverage of the heat-insulated part, and can improve the heat retention performance. It aims at providing the manufacturing method and heat-insulated apparatus of a material and a vacuum heat insulating material.

The vacuum heat insulating material of this invention is
It has a core part and a packaging part which has the part currently shape | molded by three-dimensional molding, covers the said core part, and hold | maintains the inside in a pressure reduction state.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
The packaging part is formed so as to have an outermost layer having a low thermal conductivity, a metal vapor-deposited film that blocks gas permeation, a laminate of metal foil, or an intermediate layer of these composite materials, and an innermost layer having a low thermal conductivity. And
The outermost layer is formed by vacuum molding and press molding so as to be the three-dimensional molding, and then the intermediate layer and the innermost layer are sequentially laminated.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
The wrapping part is disposed in a reduced-pressure atmosphere with the core part covered so that the inside of the wrapping part is in a reduced-pressure state and the entire circumference of the wrapping part is heat-sealed.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
After heat-sealing a part of the periphery of the packaging part, the core part is inserted and covered in the packaging part, or after the core part is inserted and covered in the packaging part, Some parts are heat-sealed,
The wrapping part is disposed in a reduced-pressure atmosphere in a state of covering the core part, and the inside of the wrapping part is decompressed and heat-sealed except for a part around the wrapping part.

Moreover, the heat-insulated device of this invention is
With heat insulation,
The three-dimensional molding of the vacuum heat insulating material described above is formed and disposed so as to follow the outer peripheral shape of the heat-insulated portion.

Moreover, the heat-insulated device of this invention is
A heat-insulated portion, and a pipe disposed in the heat-insulated portion,
The three-dimensional molding of the vacuum heat insulating material described above is formed and disposed along the outer peripheral shape of the heat-insulated portion, and the pipe is disposed in the opening or the notch.

The vacuum heat insulating material of this invention is
Since it has a core part and a packaging part that has a part molded by three-dimensional molding and covers the core part and holds the inside in a reduced pressure state,
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
The packaging part is formed so as to have an outermost layer having a low thermal conductivity, a metal vapor-deposited film that blocks gas permeation, a laminate of metal foil, or an intermediate layer of these composite materials, and an innermost layer having a low thermal conductivity. And
Since the outermost layer is formed by vacuum molding and press molding so as to be the three-dimensional molding, the intermediate layer and the innermost layer are sequentially laminated,
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
Since the packaging part is disposed in a reduced pressure atmosphere in a state of covering the core part, the inside of the packaging part is brought into a decompressed state and the entire circumference of the packaging part is heat-sealed.
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

Moreover, the manufacturing method of the vacuum heat insulating material of this invention is as follows.
In the vacuum heat insulating material,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
After heat-sealing a part of the periphery of the packaging part, the core part is inserted and covered in the packaging part, or after the core part is inserted and covered in the packaging part, Some parts are heat-sealed,
Since the packaging part is disposed in a reduced pressure atmosphere in a state of covering the core part, and the inside of the packaging part is decompressed and heat-sealed except for a part around the packaging part,
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

Moreover, the heat-insulated device of this invention is
With heat insulation,
Since the three-dimensional molding of the vacuum heat insulating material described above is formed and arranged along the outer peripheral shape of the heat-insulated part,
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

Moreover, the heat-insulated device of this invention is
A heat-insulated portion, and a pipe disposed in the heat-insulated portion,
Since the three-dimensional molding of the vacuum heat insulating material described above is formed and disposed so as to follow the outer peripheral shape of the heat-insulated portion, and the pipe is disposed in the opening or notch,
Molding to a desired three-dimensional shape is possible, the coverage of the heat-insulated part can be increased, and the heat retention performance can be improved.

It is a perspective view which shows the structure of the vacuum heat insulating material of Embodiment 1 of this invention. It is the decomposition | disassembly sectional drawing and sectional drawing which show the structure of the vacuum heat insulating material shown in FIG. It is a fragmentary sectional view which shows the structure of the packaging part of the vacuum heat insulating material shown in FIG. It is a figure for demonstrating the manufacturing method of the vacuum heat insulating material shown in FIG. It is a figure which shows the structure of the peripheral part of the vacuum heat insulating material shown in FIG. It is the perspective view and sectional drawing which show the structure of the vacuum heat insulating material of Embodiment 2 of this invention. It is the perspective view and sectional drawing which show the other structure of the vacuum heat insulating material of Embodiment 2 of this invention. It is the decomposition | disassembly sectional drawing and sectional drawing which show the structure of the vacuum heat insulating material of Embodiment 3 of this invention. It is a figure which shows the structure of the vacuum heat insulating material of Embodiment 4 of this invention. It is a figure which shows the other structure of the vacuum heat insulating material of Embodiment 4 of this invention. It is an exploded view which shows the structure at the time of using the vacuum heat insulating material shown in FIG. 9 and FIG. 10 for a hot water supply tank. It is the longitudinal cross-sectional view and cross-sectional view which show the structure of the hot water supply tank shown in FIG. It is an exploded view which shows the structure at the time of using the vacuum heat insulating material shown in FIG. 9 and FIG. 10 of Embodiment 5 of this invention for a hot water supply tank. It is the longitudinal cross-sectional view and cross-sectional view which show the structure of the hot water supply tank shown in FIG.

Embodiment 1 FIG.
Embodiments of the present invention will be described below. The vacuum heat insulating material of the present invention is composed of a core portion of a high heat insulating material and two gas-barrier packaging portions that contain the core portion, and a gas adsorbent. Is a highly heat insulating body in which the peripheral portion of the packaging portion is sealed by heat welding. The use of this vacuum heat insulating material can lower the thermal conductivity of the core part itself housed in the packaging part, and the heat transfer by internal convection is suppressed by reducing the pressure inside the packaging part.

  1 is a perspective view showing the configuration of a vacuum heat insulating material according to Embodiment 1 of the present invention, FIG. 2 is an exploded cross-sectional view and a cross-sectional view showing the configuration of the vacuum heat insulating material shown in FIG. 1, and FIG. 3 is shown in FIG. FIG. 4 is a diagram for explaining a method of manufacturing the vacuum heat insulating material shown in FIG. 1, and FIG. 5 is a peripheral portion of the vacuum heat insulating material shown in FIG. FIG. In the figure, the vacuum heat insulating material 1 includes a core portion 2, a packaging portion 3, and a gas adsorbent 4.

  The packaging unit 3 includes a molded packaging unit 31 having a portion molded by three-dimensional molding and a packaging unit 32 that is not three-dimensionally molded. Moreover, the core part 2 uses inorganic fiber, organic fiber, or these mixed materials. Examples of inorganic fibers include glass fibers, rock wool fibers, alumina fibers, silica fibers, and slag wool fibers. Examples of organic fibers include synthetic fibers such as acrylic fiber, polyester fiber, polyethylene fiber, polypropylene resin, polyurethane fiber, polynosic fiber, polyvinyl alcohol fiber, nylon fiber, and rayon fiber, as well as natural fibers such as cotton, silk, and hemp. is there. From the viewpoint of heat insulation, it is preferable to use glass fibers of inorganic fibers. However, it is not limited to the material examples illustrated here.

  The packaging part 3 for storing the core part 2 has a gas barrier property, can hold the internal pressure-reduced state from an external impact for a long period of time, and has a high thermal insulation material (low thermal conductivity material). For example, as shown in FIG. 3, the packaging part 3 is formed of the outermost layer 3a, the intermediate layer 3b, and the innermost layer 3c. The outermost layer 3a and the innermost layer 3c are formed by molding or laminating a material such as nylon, polyethylene terephthalate resin, polyethylene resin, or polystyrene resin. The intermediate layer 3b is preferably made of a material having a high gas barrier property such as aluminum by metal vapor deposition or metal foil.

  In addition, when post-processing is performed to form a flat plate-shaped vacuum heat insulating material or the like that is generally used into a desired shape, there is a possibility that the vacuum inside the packaging part may be broken by causing wrinkles, cracks, and tearing to the packaging part. In addition, pulling to an intermediate layer having gas barrier properties and applying a compressive load load promotes deterioration over time, resulting in lack of reliability. Therefore, in order not to give excessive stress to the packaging part 3, especially the gas barrier layer that forms the intermediate layer 3b when molding, the packaging part 3 has a thickness of the molded packaging part 31 that is three-dimensionally molded. It is formed thicker than the thickness of the flat packaging portion 32 that is not three-dimensionally molded. Here, this is dealt with by increasing the thickness of the outermost layer 3a.

  Further, the layer forming the outermost layer 3a has a thickness that withstands the pressure during the internal decompression of the packaging part 3 and has a thickness that does not deform the shape processed in advance, and the material is excellent in external impact and is a highly heat insulating material. Better. In order to facilitate molding when the packaging part 3 is pre-processed, a thick outermost layer 3a is applied to the packaging part 3 over the entire area of the part to be three-dimensionally molded or according to the shape of the partial area. Alternatively, the thickness may be partially controlled. However, it is not limited to the material examples and thicknesses exemplified here.

  The gas adsorbent 4 absorbs gas such as oxygen, carbon dioxide, nitrogen and water vapor together with the core portion 2 in the packaging portion 3, and is generated inside the packaging portion 3 over time after the decompression treatment of the packaging portion 3. Gas, moisture, gas entering from the outside, and moisture can be adsorbed, and a high heat insulating effect inside the packaging part 3 can be expected for a long time. As the gas adsorbent 4, silica gel, activated carbon and the like are suitable. And as a manufacturing process of the packaging part 3, the outermost layer 3a of the packaging part 3 is first processed by molding methods, such as vacuum molding and press molding, by the three-dimensional molding of the desired shape which can contact a heat insulation object part. Then, an intermediate layer 3b and an innermost layer 3c for blocking gas permeation are sequentially laminated to form a laminate.

  In this example, the packaging part 3 is composed of the outermost layer 3a, the intermediate layer 3b, and the innermost layer 3c. However, the packaging part 3 can be constructed in the same manner as long as it is composed of three or more layers. It is. Depending on the application and purpose of use, the number of layers can be increased over time by increasing the outermost layer in order to strengthen the protection of the vacuum insulation from external impacts, In order to improve the reliability, it is conceivable to increase the number of intermediate layers.

  Next, the manufacturing method of the vacuum heat insulating material in Embodiment 1 of this invention is demonstrated. As shown above, as shown in FIG. 4, the molding packaging part 36 having a three-dimensionally molded portion is placed on a holding body 50 that can hold the three-dimensional molding. Next, the core part 2 is placed, the gas adsorbent 4 is placed, and the packaging part 32 is placed. In this case, in the conventional method in which the core is inserted into the bag-shaped packaging portion and the last one side is heat-sealed during the internal decompression process, the insertion location and the shape to be inserted are limited when the core is stored. Therefore, workability is deteriorated depending on the shape of the core portion housed inside. Therefore, in the first embodiment, the packaging portion 3 is formed by the molded packaging portion 31 and the packaging portion 32 in order to ensure the shape and size of the core portion 2 and the opening area where the storing operation is easy. After the core part 2 is placed, the core part 2 is disposed in a reduced-pressure atmosphere so that the inside of the packaging part 3 is brought into a decompressed state and the entire circumference of the packaging part 3 is heat-sealed.

  As another method, after a part of the periphery of the packaging part 3 is heat-sealed to such an extent that the core part 2 can be easily inserted, the core part 2 is inserted into the packaging part 3. Cover. And it arrange | positions in a pressure-reduced atmosphere in the state which the packaging part 3 covered the core part 2, and it heat-fuses except a part around the packaging part 3 while decompressing the inside of the packaging part 3. FIG. Or after inserting the core part 2 in the packaging part 3 and covering it, the part of the packaging part 3 of the packaging part 3 is heat-sealed, leaving a part of the packaging part 3 that can be depressurized. And it arrange | positions in a pressure-reduced atmosphere in the state which the packaging part 3 covered the core part 2, and it heat-fuses except a part around the packaging part 3 while decompressing the inside of the packaging part 3. FIG. Whichever method is used, the workability of insertion of the core part 2 becomes easy, the density of the core part 2 inside the packaging part 3 can be made uniform, and wrinkles generated on the surface of the packaging part 3 during internal decompression can be suppressed. it can.

  And the vacuum heat insulating material 1 formed in this way is a method of fixing to a to-be-insulated part with adhesive tapes, such as a cellophane tape, a craft tape, a double-sided tape, the method of apply | coating an adhesive agent, etc. Can be done. Also, other methods may be used as long as they can be disposed in a state where no gap is generated between the vacuum heat insulating material and the heat-insulated portion, and are not peeled off or dropped off after that.

  In addition, the vacuum heat insulating material 1 formed in this way has, as shown in FIG. 5A, a peripheral portion of the packaging portion 3, for example, a bent portion 37 having a perforation, on the outer peripheral side from the heat fusion portion 38. To form. If formed in this way, as shown in FIG. 5 (b), when using the vacuum heat insulating material 1, it is possible to cope by bending the outer peripheral portion of the packaging portion 3 which is redundant by the bending portion 37.

  According to the vacuum heat insulating material of Embodiment 1 configured as described above, since the shape of the vacuum heat insulating material is three-dimensionally molded along the heat-insulated portion, when the inside of the packaging portion is decompressed In addition, shape deformation is reduced and the molded shape can be maintained. In addition, when the vacuum heat insulating material is post-processed to conform to the shape of the heat-insulated part as in the past, the shape of the aged shape is restored to the pre-processed shape, and it is peeled off from the part to be heat-insulated and dropped off. However, although an event in which the original heat insulating effect cannot be exhibited has occurred, in the present embodiment, since it is three-dimensionally molded along the heat insulating portion, this point can be suppressed.

  Moreover, since the thickness of the packaging part to be three-dimensionally formed is thicker than the thickness of other parts, the impact resistance is also excellent. Further, there is no processing stress on the packaging part, and generation of wrinkles, cracks, and tears is suppressed, and molding into a desired shape is facilitated and molding defects are improved. In particular, it is possible to improve the possibility of pulling to an intermediate layer having a gas barrier property and accelerating deterioration over time due to compression load.

  Moreover, since it is three-dimensionally molded along the heat-insulated part, the number of manufacturing steps for post-processing the vacuum heat insulating material and the risk of defects can be greatly reduced. In addition, in order to pre-mold the packaging part, the core part is inserted into a conventional bag-like packaging part, and finally one side is heat-sealed. By performing as shown in Embodiment 1, the insertion workability of the core part is improved, the adjustment of the core part is facilitated, and wrinkles generated in the packaging part during the internal decompression of the packaging part are suppressed.

  Moreover, in order to hold | maintain the internal pressure reduction state of a packaging part, the peripheral part sealed by heat sealing | fusion is indispensable. In this Embodiment 1, although the packaging part which has a peripheral part is excellent in gas-barrier property, since it is comprised with metal vapor deposition, such as aluminum, and the metal of high thermal conductivity of metal foil, Since it becomes thermal bridge | crosslinking which conveys heat quantity to the surface of the back side from the surface which carries out a surface contact, it will cause a heat leak, Therefore It was necessary to bend the part. Therefore, in the first embodiment, folding workability is improved by forming a bent portion at the peripheral edge of the packaging portion.

Embodiment 2. FIG.
6 is a perspective view and a cross-sectional view showing the configuration of the vacuum heat insulating material according to Embodiment 2 of the present invention. In the figure, the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted. The second embodiment is different from the above embodiments in that a notch portion 8 is provided. The notch portion 8 is formed by any method, such as when the notch portion 8 is formed in the packaging portion 3 in advance or when the notch portion 8 is formed when the plurality of packaging portions 3 are combined and heat-sealed. can do.

  As another example, FIG. 7 is a perspective view and a cross-sectional view showing the configuration of another vacuum heat insulating material in Embodiment 2 of the present invention. In the figure, the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted. The second embodiment is different from the above embodiments in that an opening 9 is provided. The opening 9 can be formed by any method such as forming the opening 9 in the packaging unit 3 in advance, or forming the opening 9 when the plurality of packaging units 3 are combined and heat-sealed. it can.

  According to the second embodiment configured as described above, the same effect as that of the first embodiment is obtained, and the heat-insulated portion and the pipe disposed on the heat-insulated portion are provided. When adapting to a heat-insulated device, the pipe can be arranged through an opening or a notch, so that it can be closely arranged in the heat-insulated part, and a vacuum heat insulating material with excellent heat insulation properties. Can be obtained. Furthermore, if a notch is provided, the vacuum insulation material can be easily attached and detached, and the vacuum insulation material and piping can be attached and detached independently during maintenance such as component replacement and inspection. Excellent.

Embodiment 3 FIG.
8 is an exploded cross-sectional view and a cross-sectional view showing the configuration of the vacuum heat insulating material according to Embodiment 3 of the present invention. In the figure, the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted. In the third embodiment, unlike the above-described embodiments, the molding core portion 20 is formed in a similar manner so that its shape follows the three-dimensionally molded three-dimensional surface of the molding packaging portion 31. . And as the formation method of the molding core part 20, the case where the fiber material processed into the sheet form is laminated | stacked and shape | molded in the desired shape, or the case where it forms by laminating | stacking a fiber material etc. can be considered. . At this time, since the orientation of the fiber material greatly affects the performance of the vacuum heat insulating material 1, it is desirable that the fiber direction of the molded core portion 20 be oriented in a direction parallel to the surface to be insulated. Further, a binder material may be attached in order to maintain the molded shape for a long period of time. And like the above-mentioned each embodiment, after accommodating the shaping | molding core part 20 in the packaging part 3 with the gas adsorbent 4, the vacuum heat insulating material 1 is formed as shown in FIG.8 (b).

  According to the third embodiment configured as described above, the molding core is pre-shaped into a desired shape, as well as the same effects as the above-described embodiments. From the case of this form, in the decompression process inside the packaging part, the molding core part can be easily formed without being biased inside the packaging part. Furthermore, the excessive part of the molding core part to be stored is not forcibly stored during the internal pressure reduction, and as a result, the occurrence of excessive stress on the packaging part is suppressed.

Embodiment 4 FIG.
FIG. 9 is an exploded perspective view (a), a side view (b) and a partial configuration diagram (c) showing the configuration of the vacuum heat insulating material 1 according to the fourth embodiment of the present invention, and FIG. 10 is the fourth embodiment according to the present invention. FIG. 11 is an exploded perspective view showing another configuration of the vacuum heat insulating material (a) and a side view (b), and FIG. 11 is an exploded view showing the configuration when the vacuum heat insulating material shown in FIG. 9 and FIG. 12 is a longitudinal sectional view and a transverse sectional view showing the configuration of the hot water supply tank shown in FIG.

  In the figure, the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted. In this Embodiment 4, unlike the said each embodiment, all the packaging parts 3 are three-dimensionally molded. Moreover, in this Embodiment 4, the case where the vacuum heat insulating materials 13 and 14 are installed in the hot water supply tank 5 as a heat insulation part of the water heater as a to-be-insulated apparatus is demonstrated. The hot water supply tank 5 is formed of an outer peripheral portion 5b having a cylindrical side surface and upper and lower end plates 5a.

  One vacuum heat insulating material 13 is formed by a molded packaging part 33 in which a three-dimensional surface is three-dimensionally molded and a molded packaging part 34 such that the packaging part 3 follows the shape of the outer peripheral part 5 b of the hot water supply tank 5. . And it is formed with the molding core part 23 three-dimensionally molded so that the three-dimensional molding of the shaping | molding packaging parts 33 and 34 may be followed. A connecting portion 3 d is formed on the periphery of the packaging portion 3. This is a flexible structure formed by processing the bending surplus portions having different curvatures between the molded packaging portion 33 and the molded packaging portion 34. And the three vacuum heat insulating materials 13 are arrange | positioned in the outer peripheral part 5b of the hot water supply tank 5, and are connected with the connection part 3d.

  Further, the other vacuum heat insulating material 14 is formed by a molded packaging portion 35 and a molded packaging portion 36 in which a three-dimensional surface that conforms to the shape of the upper and lower end plates 5 a of the hot water supply tank 5 is three-dimensionally molded. And it forms with the shaping | molding core part 24 solid-molded so that the three-dimensional shaping | molding of the shaping | molding packaging parts 35 and 36 may be followed. And the vacuum heat insulating material 14 is each arrange | positioned to the upper and lower endplates 5a, and it fixes to the vacuum heat insulating material 13 arrange | positioned previously. And the foaming heat insulation part 6 comprised from foaming resin is provided so that the outer surface side of the packaging part 3 may be covered. Here, a vacuum heat insulating material including the foam heat insulating portion 6 is used. And this foam heat insulation part 6 can be simply fixed with adhesive tapes 7, such as a cellophane tape, a craft tape, a double-sided tape, for example. Moreover, the foam heat insulation part 6 is shifted and arranged so as to cover the joint of the vacuum heat insulating material 13.

  According to the fourth embodiment configured as described above, in addition to the same effects as those of the above-described embodiments, in the foam heat insulating portion serving as an inexpensive low heat insulating material, the seam of the vacuum heat insulating material is used. By covering, an effect of reducing heat leakage from the joint of the vacuum heat insulating material can be expected. Furthermore, it plays the role of external impact protection by the foam insulation. Therefore, it leads to the cost reduction of the whole in heat insulation.

Embodiment 5 FIG.
FIG. 13 is an exploded perspective view showing the configuration when the vacuum heat insulating material (see FIGS. 9 and 10) according to Embodiment 5 of the present invention is adopted in the hot water supply tank, and FIG. 14 shows the configuration of the hot water supply tank shown in FIG. It is the longitudinal cross-sectional view and transverse cross-sectional view which show. In the figure, the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted. In the fourth embodiment, the example in which the foam heat insulating portion 6 is disposed so as to cover the outer surface side of the vacuum heat insulating materials 13 and 14 has been shown. In the fifth embodiment, in addition to the foam heat insulating portion 6, Thus, the foam heat insulating portion 61 is disposed between the hot water tank 5 and the vacuum heat insulating materials 13 and 14, that is, on the inner surface side of the vacuum heat insulating materials 13 and 14. Here, a vacuum heat insulating material including the foam heat insulating portions 6 and 61 is used. Then, the arrangement of the vacuum heat insulating material 13 and the foam heat insulating portion 61 are shifted so that the joint of the foam heat insulating portion 61 does not overlap the joint of the vacuum heat insulating material 13.

  According to the fifth embodiment configured as described above, since the heat of the hot water supply tank that is at a high temperature is not directly transmitted to the packaging unit, it is possible to obtain the same effect as each of the above embodiments. Even if the heat insulation grade is low, it can be coped with, and the cost can be reduced. Furthermore, since the foam heat insulation part is arrange | positioned in the whole surface of a packaging part, heat insulation can be performed with high efficiency.

  In each of the above-described embodiments, a water heater is shown as an example of a heat-insulated device. However, the present invention is not limited to this, and can be used for, for example, heat and cold equipment. It can be used in the same manner as in the above embodiments for containers, refrigerators, water heaters, household or commercial water heaters (hot water heaters), domestic or commercial refrigeration and air conditioners, jar pots, etc. Similar effects can be achieved.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

DESCRIPTION OF SYMBOLS 1 Vacuum heat insulating material, 13 Vacuum heat insulating material, 14 Vacuum heat insulating material, 2 core part, 20 Molding core part,
23 molding core part, 24 molding core part, 3 packaging part, 31 molding packaging part, 32 packaging part,
33 molded packaging part, 34 molded packaging part, 35 molded packaging part, 36 molded packaging part,
37 bent portion, 38 heat-sealed portion, 3a outermost layer, 3b intermediate layer, 3c innermost layer,
3d connecting portion, 4 gas adsorbent, 5 hot water supply tank, 50 holder, 5a end plate,
5b outer periphery, 6 foam insulation, 61 foam insulation, 7 adhesive tape, 8 notch,
9 Opening.

Claims (13)

A vacuum heat insulating material provided with a core part and a packaging part which has the part currently shape | molded by three-dimensional molding, and covers the said core part and hold | maintains the inside in a pressure reduction state. 2. The vacuum heat insulating material according to claim 1, wherein the packaging portion is formed such that all or part of the thickness of the portion molded by the three-dimensional molding is thicker than the thickness of the other portion. The core part follows the shape of the three-dimensional molding,
The vacuum heat insulating material according to claim 1 or 2, which is formed by laminating a fiber material processed into a sheet shape into a desired shape, or by laminating fiber materials. The vacuum heat insulating material of any one of Claim 1 thru | or 3 provided with at least any one of an opening part or a notch. The vacuum heat insulating material according to any one of claims 1 to 4, wherein the packaging part has a bent part formed at a peripheral part of the packaging part. The vacuum heat insulating material according to any one of claims 1 to 5, wherein at least one of the connecting portion and the fixing portion is formed on the peripheral portion of the packaging portion. The vacuum heat insulating material of any one of Claim 1 thru | or 6 provided with the foam heat insulation part comprised from a foamed resin so that a part or all of the said packaging part may be covered. In the manufacturing method of the vacuum heat insulating material of any one of Claims 1 thru | or 7,
The packaging part is formed so as to have an outermost layer having a low thermal conductivity, a metal vapor-deposited film that blocks gas permeation, a laminate of metal foil, or an intermediate layer of these composite materials, and an innermost layer having a low thermal conductivity. And
A method for producing a vacuum heat insulating material, wherein the outermost layer is formed by vacuum molding and press molding so as to be the three-dimensional molding, and then the intermediate layer and the innermost layer are sequentially laminated. In the manufacturing method of the vacuum heat insulating material of any one of Claims 1 thru | or 7,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
A method for producing a vacuum heat insulating material, wherein the packaging part is disposed in a reduced pressure atmosphere in a state of covering the core part, the inside of the packaging part is brought into a reduced pressure state, and the entire circumference of the packaging part is thermally fused. In the manufacturing method of the vacuum heat insulating material of any one of Claims 1 thru | or 7,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
After heat-sealing a part of the periphery of the packaging part, the core part is inserted and covered in the packaging part, or after the core part is inserted and covered in the packaging part, Some parts are heat-sealed,
A method for producing a vacuum heat insulating material, wherein the packaging part is disposed in a reduced pressure atmosphere in a state of covering the core part, and the inside of the packaging part is decompressed and heat fusion is performed except for a part around the packaging part. In the manufacturing method of the vacuum heat insulating material according to any one of claims 8 to 10,
In the step of covering the core part of the packaging part and maintaining the inside in a reduced pressure state,
The manufacturing method of the vacuum heat insulating material performed by arrange | positioning the holding body which hold | maintains the three-dimensional molded part of the said packaging part. In a heat-insulated device including a heat-insulated part,
The heat insulating apparatus in which the three-dimensional molding of the vacuum heat insulating material according to any one of claims 1 to 7 is formed and disposed so as to follow an outer peripheral shape of the heat insulating part. In a heat-insulated device including a heat-insulated portion and a pipe disposed in the heat-insulated portion,
The heat-insulated device in which the three-dimensional molding of the vacuum heat insulating material according to claim 4 is formed and disposed so as to follow the outer peripheral shape of the heat-insulated portion, and the pipe is disposed in the opening or the notch. .

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