WO2020255884A1 - Vacuum insulation material and insulated box using vacuum insulation material - Google Patents
Vacuum insulation material and insulated box using vacuum insulation material Download PDFInfo
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- WO2020255884A1 WO2020255884A1 PCT/JP2020/023254 JP2020023254W WO2020255884A1 WO 2020255884 A1 WO2020255884 A1 WO 2020255884A1 JP 2020023254 W JP2020023254 W JP 2020023254W WO 2020255884 A1 WO2020255884 A1 WO 2020255884A1
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- heat insulating
- vacuum heat
- insulating material
- groove
- end portion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
Definitions
- the present invention relates to a vacuum heat insulating material and a heat insulating box body using the vacuum heat insulating material.
- a vacuum heat insulating material in which a porous core material is inserted into an outer bag having a gas barrier property and the inside is depressurized and sealed is known.
- the vacuum heat insulating material is used as a heat insulating material for a heat insulating container, a water heater, and the like, and when the construction surface of the vacuum heat insulating material is curved, the vacuum heat insulating material is deformed and attached according to the construction surface.
- the flat plate vacuum heat insulating material it is known that a recess is formed on one side of the core material and the region where the recess is formed is curved so as to be recessed (see, for example, Patent Document 1). ).
- a flat plate vacuum heat insulating material is provided with grooves having a certain depth and spacing (see, for example, Patent Document 2).
- the end of the vacuum heat insulating material is harder to bend than the central part, and immediately after the core material is vacuum-sealed, the central part of the vacuum heat insulating material is curved more strongly than the end, and the curvature of the central part becomes large. Further, a large force is required to deform the end portion of the vacuum heat insulating material according to the curved surface which is the construction surface. Therefore, a lot of labor is required to prevent a gap from being formed between the end portion and the construction surface.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vacuum heat insulating material that can be easily attached to a curved surface.
- the present invention includes a flat core material and an outer cover material that covers the core material, and a first groove is formed in the central portion in the width direction of the core material, and the central portion is formed.
- the deformation of the core material is such that the curvature of the two ends is the curvature of the central portion. It is characterized in that it is formed larger than.
- the end portion of the vacuum heat insulating material when the vacuum heat insulating material is attached to the curved surface, the end portion of the vacuum heat insulating material has a curved shape with a large curvature, so that the end portion of the vacuum heat insulating material can be easily aligned with the curved surface. As a result, the amount of the end portion floating from the curved surface can be easily reduced, and the vacuum heat insulating material can be easily attached.
- this specification shall include all the contents of the Japanese patent application / Japanese Patent Application No. 2019-112952 filed on June 18, 2019.
- the amount of the end floating from the curved surface can be reduced, so that the vacuum heat insulating material can be easily attached.
- FIG. 1 is a cross-sectional view of the vacuum heat insulating material developed in a flat plate shape.
- FIG. 2 is a schematic perspective view showing a curved vacuum heat insulating material.
- FIG. 3 is an explanatory view showing a vacuum heat insulating material attached to a cylindrical object.
- the first invention includes a flat core material and an outer cover material that covers the core material, a first groove is formed in a central portion in the width direction of the core material, and the central portion is formed in the width direction.
- the deformation of the core material is such that the curvature of the two ends is larger than the curvature of the central portion. It is a thing. According to this, when the vacuum heat insulating material is attached to the curved surface, the amount of the end portion floating from the curved surface can be reduced, so that the vacuum heat insulating material can be easily attached.
- the depth of the second groove is formed deeper than the depth of the first groove. According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
- the pitch of the second groove is narrower than the pitch of the first groove. According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
- the width of the second groove is formed wider than the width of the first groove. According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
- the number of lines formed per unit length in the width direction is larger than that of the first groove. According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
- the sixth invention is to dispose a water adsorbent in the central portion of the core material. According to this, it is possible to provide a vacuum heat insulating material provided with a moisture adsorbent while suppressing the influence on the curvature of the end portion.
- a seventh invention is a heat insulating box body containing a container to which the vacuum heat insulating material is attached. According to this, the vacuum heat insulating material can be easily attached to the curved surface, and the labor required for manufacturing the heat insulating box can be reduced.
- FIG. 1 is a cross-sectional view of a vacuum heat insulating material in which the core material is developed into a flat plate to show the arrangement configuration of the grooves according to the present embodiment.
- FIG. 2 is a schematic perspective view showing the vacuum heat insulating material according to the present embodiment.
- FIG. 3 is an explanatory view showing a vacuum heat insulating material attached to a cylindrical object.
- UP indicates the upper side
- W indicates the width direction of the vacuum heat insulating material
- D indicates the length direction of the vacuum heat insulating material.
- the upper UP corresponds to the thickness direction of the vacuum heat insulating material.
- the vacuum heat insulating material 1 includes a core material 3 and an outer cover material 2 that covers the outside of the core material 3. Further, the moisture adsorbent 4 is arranged in the core material 3.
- the core material 3 is a flat plate having a constant thickness, is inserted into the bag-shaped outer cover material 2, and is sealed under reduced pressure. As a result, the flat plate-shaped vacuum heat insulating material 1 is obtained.
- a plurality of first grooves 21 and second grooves 22 are formed on one main surface 10 of the vacuum heat insulating material 1.
- the central portion 11 is the central portion of the vacuum heat insulating material 1 in the width direction W, and is located between the end portions 12 and the end portions 13 in the width direction W.
- the end portion 12 and the end portion 13 are portions in the width direction W of the vacuum heat insulating material 1 from the end 12a and the end 13a to the inside of the width direction W up to a predetermined distance L. Then, a portion other than the end portion 12 and the end portion 13 becomes the central portion 11.
- the distance L is appropriately set depending on the size of the vacuum heat insulating material 1, the shape of the curved surface to which the vacuum heat insulating material 1 is attached, and workability. For example, when the dimensions of the vacuum heat insulating material 1 are 410 mm ⁇ width 1020 mm ⁇ thickness 15 mm, it is preferable that the predetermined distance L is 200 mm to 100 mm.
- a first groove 21 is formed in the core material 3 of the central portion 11, and a second groove 22 is formed in the end portion 12 and the end portion 13.
- the first groove 21 and the second groove 22 are formed linearly along the length direction D of the vacuum heat insulating material 1.
- the first groove 21 and the second groove 22 have a V-shaped cross section along the width direction W.
- the depth D1 of the first groove 21 from the main surface 10 is formed to be shallower than the depth D2 of the second groove 22 from the main surface 10.
- the thickness of the portion where the second groove 22 is formed becomes thinner than the thickness of the portion where the first groove 21 is formed, and the portion where the second groove 22 is formed is easily deformed.
- the depth D1 of the first groove 21 may be 80% or less of the depth D2 of the second groove 22.
- the width W1 on the main surface 10 of the first groove 21 may be formed narrower than the width W2 on the main surface 10 of the second groove 22. The wider the groove formed, the more stress is likely to be generated by the outer cover material 2. Then, the portion where the groove is formed is easily deformed.
- the pitch P1 of the first groove 21 may be wider than the pitch P2 of the second groove 22.
- the end portion 12 and the end portion 13 can be bent more easily than the central portion 11.
- the pitch P1 of the first groove 21 may be twice or more the pitch P2 of the second groove 22.
- the number of the first groove 21 and the second groove 22 is not limited, and is appropriately set according to the curved surface to be attached.
- the number of first grooves 21 formed per unit length in the width direction W at the central portion 11 is formed per unit length in the width direction W at the end portions 12 and 13. It may be less than the number of 2 grooves 22. Even when the depth D1 and width W1 of the first groove 21 and the depth D2 and width W2 of the second groove 22 are the same, a large number of portions are formed per unit length in the width direction W. Is easy to bend. Therefore, by adjusting the number of grooves formed per unit length in the width direction W, the end portion 12 and the end portion 13 can be made easier to bend than the central portion 11.
- the core material 3 is not particularly limited, but the core material 3 can maintain its thickness against atmospheric pressure when sealed under reduced pressure, has a high porosity, and has a low solid thermal conductivity.
- an inorganic powder aggregate particularly silica powder, or an inorganic fiber aggregate, particularly a glass fiber aggregate, can be used.
- the material of the water adsorbent 4 is not particularly limited, but a material having a large binding energy with the water once adsorbed and a large amount of adsorbed per unit weight is preferable, and for example, calcium oxide, potassium oxide or the like is used. Can be done.
- the outer cover material 2 is not particularly limited, but it is excellent in gas barrier property, and even if the vacuum heat insulating material is stored in the atmosphere, a material having a small amount of air entering the inside can be used.
- a gas permeability of 104 [cm 3 / m 2 ⁇ day ⁇ atm] or less can be used, preferably 103 [cm 3 / m 2 ⁇ day ⁇ atm] or less, and more preferably 102 [. cm 3 / m 2 ⁇ day ⁇ atm] or less can be used.
- a bag made of a plastic laminated film having a gas barrier layer can be used as a material satisfying such properties.
- the gas barrier layer is not particularly limited, but may be a metal foil such as an aluminum foil, or a plastic film on which a metal such as aluminum, silica, carbon, or the like is vapor-deposited.
- the first means for forming the vacuum heat insulating material 1 is to insert the flat plate-shaped core material 3 into the bag-shaped outer cover material 2, evacuate the inside of the outer cover material 2, and vacuum-pack the core material 3. To do. Then, the first groove 21 and the second groove 22 are formed in the vacuum heat insulating material 1 by press working from above the outer cover material 2. Therefore, the vacuum heat insulating material 1 that can be easily attached to the curved surface can be obtained from the flat plate vacuum heat insulating material.
- the cross-sectional shape of the first groove 21 and the second groove 22 is V-shaped, a V-shaped cross-sectional shape is used, and when the cross-sectional shape is U-shaped or rectangular. The corresponding cross-sectional shape mold is used.
- the means for forming the second vacuum heat insulating material 1 is to form the first groove 21 and the second groove 22 in the flat plate-shaped core material 3, and then insert the core material 3 into the outer cover material 2 for vacuum packaging. Then, when the core material 3 is vacuum-packed, stress is generated in the outer cover material 2 on the side where the first groove 21 and the second groove 22 are formed, and the core material 3 is curved. Since it is curved due to the shape of the core material 3, the load applied to the outer cover material 2 can be reduced. Further, the core material 3 may be pressed to form the first groove 21 and the second groove 22, or the core material 3 may be cut to form the core material 3.
- first groove 21 and the second groove 22 are arranged on one main surface 10 of the vacuum heat insulating material 1, but the first groove 21 and the second groove 22 are both sides of the vacuum heat insulating material 1. May be formed in.
- the usage state of the vacuum heat insulating material 1 will be described with reference to FIG.
- the stress from the outer cover material 2 is applied to the portions of the vacuum heat insulating material 1 where the first groove 21 and the second groove 22 are formed. Therefore, as shown in FIG. 2, the shape is curved with the main surface 10 inside.
- the central portion 11 is more difficult to bend than the end portion 12 and the end portion 13. Therefore, in the vacuum heat insulating material 1, the curvatures of the end portion 12 and the end portion 13 are larger than the curvature of the central portion 11. That is, in the vacuum heat insulating material 1, the radius of curvature R2 of the end portion 12 and the radius of curvature R3 of the end portion 13 are smaller than the radius of curvature R1 of the central portion 11.
- the pitch P1 of the first groove 21 may be wider than the pitch P2 of the second groove 22, or the pitch P2 of the first groove 21
- the width W1 may be narrower than the width W2 of the second groove 22. Since the curvature of the central portion 11 is formed to be small, when the vacuum heat insulating material 1 is placed on a flat table or the like, the height H can be lowered from the table at the ends 12a and 13a.
- the heat insulating box body 6 using the vacuum heat insulating material 1 contains a cylindrical tank 5 which is a heat and cold insulation container. Then, the vacuum heat insulating material 1 is attached to the outer peripheral surface 51 of the tank 5.
- the outer peripheral surface 51 is the construction surface of the vacuum heat insulating material 1, and the vacuum heat insulating material 1 is closely attached to the outer peripheral surface 51.
- the central portion 11 is wound around the outer peripheral surface 51 after the end portion 12 is attached to the outer peripheral surface 51 of the tank 5. Then, a force F is applied to the end portion 13 so that the end portion 13 is aligned with the outer peripheral surface 51.
- the tank 5 to which the vacuum heat insulating material 1 is attached is housed in the housing 61 of the heat insulating box body 6.
- a heat insulating material may be further arranged between the housing 61 and the vacuum heat insulating material 1.
- the operation of the present embodiment will be described.
- the vacuum heat insulating material 1 is attached to the outer peripheral surface 51 of the tank 5, since the end portion 12 and the end portion 13 are curved, the amount of deformation of the end portion 12 and the end portion 13 can be reduced. Therefore, the force for deforming and attaching the end portion 12 and the end portion 13 is reduced.
- the curvature of the end portion 12 and the end portion 13 is equal to or greater than the curvature of the outer peripheral surface 51, it is possible to easily suppress the lifting of the end portion 12 and the end portion 13 from the outer peripheral surface 51. Then, the gap between the tank 5 and the vacuum heat insulating material 1 can be reduced, and the heat and cold insulation performance of the tank 5 can be improved.
- the end portion 12 is attached to the outer peripheral surface 51, and the vacuum heat insulating material 1 is wound around the tank 5 while being in close contact with the outer peripheral surface 51. Since the central portion 11 receives a force from the end portion 12 side and the end portion 13 side, it can be efficiently deformed even if the curvature is small.
- the depth D1 of the first groove 21 is shallow and the width W1 is narrow or the pitch P1 is wide in the central portion 11, the decrease in the thickness of the core material 3 can be suppressed in the central portion 11.
- the heat insulating efficiency of the vacuum heat insulating material 1 is improved.
- grooves are formed by compression of the core material 3, since there are few grooves formed in the central portion 11, it is possible to reduce the dense portion of the core material 3, or compare the densities of the core materials 3. It can be lowered. Therefore, the influence of the formation of the first groove 21 on the heat insulating performance of the central portion 11 can be reduced. Further, by forming the first groove 21 having the same depth evenly in the central portion 11, the load on the outer cover material 2 can be reduced, and the influence of the outer cover material 2 on the gas barrier property can be reduced. ..
- the height H of the vacuum heat insulating material 1 can be kept low, so that the efficiency of the transfer can be improved.
- the vacuum heat insulating material 1 is placed on the table with the main surface 10 facing up, the height H of the vacuum heat insulating material 1 is suppressed to be low because the curvature of the central portion 11 is small. Therefore, the vacuum heat insulating material 1 is less bulky than the case where the curvature of the central portion 11 is large, and the vacuum heat insulating material 1 can be efficiently conveyed. Further, even when the vacuum heat insulating material 1 is bent due to the vertical vibration during transportation, the distance that the end portion 12 and the end portion 13 move due to the bending can be reduced. As a result, the load received on the vacuum heat insulating material 1 due to transportation or the like can be reduced.
- Example 1 of the vacuum heat insulating material in the first embodiment will be described.
- Glass wool was used as the core material 3 of the vacuum heat insulating material 1 of Example 1.
- the size of the core material 3 was 410 mm in length ⁇ 1020 mm in width ⁇ 15 mm in thickness, and the weight was 1520 g.
- Calcium oxide was used as the water adsorbent 4.
- the weight was 15 g.
- the water adsorbent 4 was arranged substantially in the center with respect to the width direction and the vertical direction of the core material 3.
- Two types of films were used for the outer cover material 2.
- a composite film in which a 15 ⁇ m nylon layer, a 25 ⁇ m nylon layer, a 6 ⁇ m aluminum layer, and a 50 ⁇ m low-density polyethylene layer were laminated was used.
- a 25 ⁇ m nylon layer, a 12 ⁇ m polyester terephthalate layer vapor-deposited with aluminum, a 12 ⁇ m ethylene vinyl alcohol resin layer vapor-deposited with aluminum, and a 50 ⁇ m low-density polyethylene layer were used.
- the low-density polyethylene layers of the above two types of films were opposed to each other, and the peripheral edges were heat-welded to form a bag.
- a plurality of grooves were formed on the main surface 10 of the vacuum heat insulating material 1 in parallel with the vertical direction.
- the range of 200 mm in the width direction from both ends of the vacuum heat insulating material 1 was defined as the end portion 12 and the end portion 13, respectively.
- the space between the end portion 12 and the end portion 13 is defined as the central portion 11.
- the second groove 22 formed in the end portion 12 and the end portion 13 was formed with a pitch P2 of 20 mm and a depth D2 of 8 mm.
- the first groove 21 formed in the central portion 11 was formed with a pitch P1 of 50 mm and a depth D1 of 3 mm.
- the first groove 21 and the second groove 22 were formed by compressing the core material 3 by a die press.
- the water adsorbent 4 used was 60 mm ⁇ 188 mm in which a packaging material of 60 mm ⁇ 94 mm was continuously packaged. This is in consideration of the possibility that the moisture adsorbent 4 is compacted together with the core material 3 when the surface of the vacuum heat insulating material 1 is smoothed by a roll press or the like, and the vacuum heat insulating material 1 becomes difficult to bend.
- the size of the water adsorbent 4 is not limited to this, and for example, 60 mm ⁇ 230 mm in which a packaging material of 30 mm ⁇ 230 mm is continuously packaged can be used.
- the first groove 21 was not formed at the portion where the water adsorbent 4 was arranged. Further, even if the pitch of the first groove 21 is 60 mm or more, the moisture adsorbent 4 is arranged close to one side in the width direction of the central portion 11, and a flat portion of 60 mm ⁇ 60 mm or more is formed on the other side of the central portion 11. Good. Then, for example, a heat flow meter or the like may be arranged on this flat surface portion and used in the inspection step of the vacuum heat insulating material 1 after grooving.
- Comparative Example 1 Comparative Example 1 of the vacuum heat insulating material will be described.
- the vacuum heat insulating material of Example 1 is the same except for the arrangement of the grooves, the depth of the grooves, and the pitch of the grooves.
- a plurality of grooves were formed on one main surface of the vacuum heat insulating material in parallel with the vertical direction. The depth of each groove was 8 mm, and the grooves were evenly arranged at a pitch of 20 mm.
- the vacuum heat insulating material was placed on a flat surface with the main surface in which the groove was formed facing upward, and the height H from the flat surface was measured at the end in the width direction.
- the height H corresponds to the amount of bending of the vacuum heat insulating material.
- Example 1 As a result, in the vacuum heat insulating material of Example 1, the curvature of the end portion 12 and the end portion 13 was larger than the curvature of the central portion 11. Then, in Example 1, the force F required to follow the construction surface was 43N, and the height H from the plane was 25 mm. In Comparative Example 1, the force F required to follow the construction surface was 60 N, and the height H from the plane was 32 mm.
- the vacuum heat insulating material of Example 1 requires less force during construction than that of Comparative Example 1. This indicates that the labor required to attach the vacuum heat insulating material to the construction surface without gaps is reduced. Then, it was shown that the bending amount of the vacuum heat insulating material of Example 1 was smaller than that of Comparative Example 1. This indicates that the vacuum heat insulating material of Example 1 has better loading efficiency during transportation than that of Comparative Example 1. Further, it is shown that the vacuum heat insulating material of Example 1 is less susceptible to vibration and the like than the vacuum heat insulating material of Comparative Example 1, and has high durability during transportation.
- Example 1 considering the influence of the core material density on the thermal conductivity, it is considered that the heat insulating performance of the portion processed to the groove depth of 8 mm is 65% lower than that of the unprocessed portion. Be done. Then, the deterioration of the heat insulating performance of the portion processed to the groove depth of 3 mm can be suppressed to 25%. Therefore, it is presumed that Example 1 in which the groove depth is shallow in the central portion 11 has higher heat insulating performance than Comparative Example 1.
- the flat core material 3 and the outer cover material 2 covering the core material 3 are provided, and the first groove 21 is provided in the central portion 11 of the core material 3 in the width direction W. Is formed, and a second groove 22 is formed in the two end portions 12 and the end portion 13 of the core material 3 that sandwiches the central portion 11 in the width direction W, and the two end portions are in a state where the core material 3 is vacuum-sealed.
- the curvature of the 12 and the end portion 13 is formed to be larger than the curvature of the central portion 11.
- the end portion 12 and the end portion 13 are less likely to float than the curved surface, and the labor for attaching the vacuum heat insulating material 1 to the curved surface is reduced. ..
- the vacuum heat insulating material 1 is transported, the vacuum heat insulating material 1 is not bulky. Then, when the vacuum heat insulating material 1 is loaded on a flat table, the amount of deformation due to vibration or load can be reduced, and the load received by the vacuum heat insulating material 1 during transportation can be reduced. In addition, stress due to deformation applied to the outer cover material 2 during transportation is reduced.
- the depth D2 of the second groove 22 is formed deeper than the depth D1 of the first groove 21. According to this, the end portion 12 and the end portion 13 are easily bent, and the curvature of the end portion 12 and the end portion 13 can be made larger than the curvature of the central portion 11. Then, the curvatures of the end portion 12 and the end portion 13 can be easily increased. Further, the thickness of the vacuum heat insulating material 1 is difficult to reduce in the central portion 11, and the heat insulating performance can be ensured while improving the mountability of the vacuum heat insulating material 1 on the curved surface.
- the pitch P2 between the second grooves 22 is narrower than the pitch P1 between the first grooves 21. According to this, the end portion 12 and the end portion 13 are more easily bent than the central portion 11, and the curvature of the end portion 12 and the end portion 13 can be increased.
- the width W2 of the second groove 22 is formed wider than the width W1 of the first groove 21. According to this, the end portion 12 and the end portion 13 are easily bent, and the curvature of the end portion 12 and the end portion 13 can be increased. Then, it is difficult to reduce the thickness of the vacuum heat insulating material 1 at the central portion 11, and it is possible to improve the mountability of the vacuum heat insulating material 1 on the curved surface and secure the heat insulating performance.
- the number of lines formed per unit length in the width direction W is larger in the second groove 22 than in the first groove 21. According to this, the end portion 12 and the end portion 13 can be easily bent. Then, the curvatures of the end portion 12 and the end portion 13 can be increased.
- the water adsorbent 4 is arranged at the central portion 11 of the core material 3. According to this, the moisture in the vacuum heat insulating material 1 can be efficiently adsorbed on the moisture adsorbent 4. Further, the water adsorbent 4 can be arranged at a position that does not easily affect the curvature of the end portion 12 and the end portion 13.
- the heat insulating box 6 containing the tank 5 which is a container to which the vacuum heat insulating material 1 is attached is configured. According to this, it is possible to easily attach the vacuum heat insulating material 1 to the tank 5 at the time of manufacturing the heat insulating box body 6. Further, since the gap between the tank 5 and the vacuum heat insulating material 1 can be reduced, the heat insulating box body 6 having high heat insulating efficiency can be manufactured.
- the present embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the above-described embodiment.
- the cross-sectional shapes of the first groove 21 and the second groove 22 are V-shaped
- the cross-sectional shapes of the first groove 21 and the second groove 22 are the above-mentioned V. It is not limited to the character shape.
- the cross-sectional shape of the first groove 21 and the second groove 22 may be a shape that makes the vacuum heat insulating material 1 easy to bend, and may be a U shape or a rectangular shape. Further, the cross-sectional shapes of the first groove 21 and the second groove 22 may be different, and the first groove 21 may be omitted in the central portion 11.
- first groove 21 and the second groove 22 is not limited to the press working of the vacuum heat insulating material 1 or the core material 3 by a mold or the like.
- the portion of the core material 3 that forms the first groove 21 and the second groove 22 may be removed in advance. Further, the density of the core material 3 in the portion forming the first groove 21 and the second groove 22 is lowered, or the density of the core material 3 other than the portion in which the first groove 21 and the second groove 22 are formed is increased. You may do it.
- the first groove 21 and the second groove 22 may be formed to have the same depth and width so that the pitch P1 between the first grooves 21 is wider than the pitch P2 between the second grooves 22. Further, these may be combined to make the curvature of the end portion 12 and the end portion 13 larger than the curvature of the central portion 11.
- first groove 21 and the second groove 22 may be formed as long as the vacuum heat insulating material 1 is curved, and may be formed so as to be inclined with respect to the length direction D, may be formed in a broken line shape, or may be formed in a zigzag shape. You may.
- the vacuum heat insulating material according to the present invention can be suitably used as a heat insulating material mounted on a curved surface.
- Vacuum heat insulating material 2 Outer cover material 3 Core material 5
- Insulated box 10 Main surface 11
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 1st groove 22
- End part 21 2nd groove
- D1 Depth (1st groove) D2 depth (second groove)
- P2 pitch (second groove) W1 width (1st groove) W2 width (second groove)
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Abstract
The present invention addresses the problem of making it easy for a vacuum insulation material in which a flat core material is sealed in a depressurized state by a sheath material to be mounted on a curved surface. A vacuum insulation material that comprises a flat core material (3) and a sheath material (2) that covers the core material (3). First grooves (21) are formed in a width direction W center part (11) of the core material (3), and second grooves (22) are formed in two end parts (12, 13) of the core material (3) that are on either side of the center part (11) in the width direction W. When sealed in a depressurized state, the core material (3) deforms such that the curvature of the two end parts (12, 13) is greater than the curvature of the center part (11). As a result, the end parts (12, 13) can be easily mounted along a curved surface, and separation of the vacuum insulation material (1) from the curved surface can be reduced.
Description
本発明は、真空断熱材及び真空断熱材を用いた断熱箱体に関する。
The present invention relates to a vacuum heat insulating material and a heat insulating box body using the vacuum heat insulating material.
従来、多孔質の芯材をガスバリア性のある外被袋内に挿入し、内部を減圧して封止した真空断熱材が知られている。
真空断熱材は、保温保冷容器や給湯器などの断熱材として用いられ、真空断熱材の施工面が湾曲している場合には、施工面に合わせて真空断熱材が変形されて装着される。
そして、平板状の真空断熱材を湾曲させる場合には、芯材の片面に凹部を形成し、この凹部が形成された領域が窪むように湾曲させるものが知られている(例えば、特許文献1参照)。
また、タンク等の円筒状の対象物に密着させるために、あらかじめ平板状の真空断熱材に一定の深さ及び間隔の溝をつけたものが知られている(例えば、特許文献2参照)。 Conventionally, a vacuum heat insulating material in which a porous core material is inserted into an outer bag having a gas barrier property and the inside is depressurized and sealed is known.
The vacuum heat insulating material is used as a heat insulating material for a heat insulating container, a water heater, and the like, and when the construction surface of the vacuum heat insulating material is curved, the vacuum heat insulating material is deformed and attached according to the construction surface.
When the flat plate vacuum heat insulating material is curved, it is known that a recess is formed on one side of the core material and the region where the recess is formed is curved so as to be recessed (see, for example, Patent Document 1). ).
Further, in order to bring the vacuum heat insulating material into close contact with a cylindrical object such as a tank, it is known that a flat plate vacuum heat insulating material is provided with grooves having a certain depth and spacing (see, for example, Patent Document 2).
真空断熱材は、保温保冷容器や給湯器などの断熱材として用いられ、真空断熱材の施工面が湾曲している場合には、施工面に合わせて真空断熱材が変形されて装着される。
そして、平板状の真空断熱材を湾曲させる場合には、芯材の片面に凹部を形成し、この凹部が形成された領域が窪むように湾曲させるものが知られている(例えば、特許文献1参照)。
また、タンク等の円筒状の対象物に密着させるために、あらかじめ平板状の真空断熱材に一定の深さ及び間隔の溝をつけたものが知られている(例えば、特許文献2参照)。 Conventionally, a vacuum heat insulating material in which a porous core material is inserted into an outer bag having a gas barrier property and the inside is depressurized and sealed is known.
The vacuum heat insulating material is used as a heat insulating material for a heat insulating container, a water heater, and the like, and when the construction surface of the vacuum heat insulating material is curved, the vacuum heat insulating material is deformed and attached according to the construction surface.
When the flat plate vacuum heat insulating material is curved, it is known that a recess is formed on one side of the core material and the region where the recess is formed is curved so as to be recessed (see, for example, Patent Document 1). ).
Further, in order to bring the vacuum heat insulating material into close contact with a cylindrical object such as a tank, it is known that a flat plate vacuum heat insulating material is provided with grooves having a certain depth and spacing (see, for example, Patent Document 2).
しかしながら、真空断熱材は中央部分に比べて端部が曲がり難く、芯材が減圧密封された直後から真空断熱材の中央部が端部より強く湾曲され、中央部の曲率が大きくなる。また、施工面である曲面にあわせて、真空断熱材の端部を変形させるには大きな力が必要とされる。このため、端部と施工面との間に隙間が生じないようにするために、多くの労力が必要とされる。
However, the end of the vacuum heat insulating material is harder to bend than the central part, and immediately after the core material is vacuum-sealed, the central part of the vacuum heat insulating material is curved more strongly than the end, and the curvature of the central part becomes large. Further, a large force is required to deform the end portion of the vacuum heat insulating material according to the curved surface which is the construction surface. Therefore, a lot of labor is required to prevent a gap from being formed between the end portion and the construction surface.
本発明は、前記した事情に鑑みてなされたものであり、曲面への取り付けが容易な真空断熱材を提供することを目的とするものである。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vacuum heat insulating material that can be easily attached to a curved surface.
前記目的を達成するため、本発明は、平板状の芯材と前記芯材を被覆する外被材とを備え、前記芯材の幅方向の中央部に第1溝が形成され、前記中央部を前記幅方向で挟む前記芯材の2つの端部に第2溝が形成され、減圧密封された状態で、前記芯材の変形は、前記2つの端部の曲率が、前記中央部の曲率よりも大きく形成されることを特徴とする。
In order to achieve the above object, the present invention includes a flat core material and an outer cover material that covers the core material, and a first groove is formed in the central portion in the width direction of the core material, and the central portion is formed. In a state where the second groove is formed at the two ends of the core material that sandwiches the core material in the width direction and is sealed under reduced pressure, the deformation of the core material is such that the curvature of the two ends is the curvature of the central portion. It is characterized in that it is formed larger than.
これによれば、真空断熱材を曲面に取り付ける際に、真空断熱材の端部が曲率の大きい湾曲形状となることから、真空断熱材の端部を曲面に合わせ易くなる。これにより、端部が曲面より浮く量を低減しやすくなり、真空断熱材の取り付けを容易に行うことができる。
なお、この明細書には、2019年6月18日に出願された日本国特許出願・特願2019-112952号の全ての内容が含まれるものとする。 According to this, when the vacuum heat insulating material is attached to the curved surface, the end portion of the vacuum heat insulating material has a curved shape with a large curvature, so that the end portion of the vacuum heat insulating material can be easily aligned with the curved surface. As a result, the amount of the end portion floating from the curved surface can be easily reduced, and the vacuum heat insulating material can be easily attached.
In addition, this specification shall include all the contents of the Japanese patent application / Japanese Patent Application No. 2019-112952 filed on June 18, 2019.
なお、この明細書には、2019年6月18日に出願された日本国特許出願・特願2019-112952号の全ての内容が含まれるものとする。 According to this, when the vacuum heat insulating material is attached to the curved surface, the end portion of the vacuum heat insulating material has a curved shape with a large curvature, so that the end portion of the vacuum heat insulating material can be easily aligned with the curved surface. As a result, the amount of the end portion floating from the curved surface can be easily reduced, and the vacuum heat insulating material can be easily attached.
In addition, this specification shall include all the contents of the Japanese patent application / Japanese Patent Application No. 2019-112952 filed on June 18, 2019.
本発明によれば、真空断熱材を曲面に取り付ける際に、端部が曲面より浮く量を低減することができるので、真空断熱材の取り付けを容易に行うことができる。
According to the present invention, when the vacuum heat insulating material is attached to a curved surface, the amount of the end floating from the curved surface can be reduced, so that the vacuum heat insulating material can be easily attached.
第1の発明は、平板状の芯材と前記芯材を被覆する外被材とを備え、前記芯材の幅方向の中央部に第1溝が形成され、前記中央部を前記幅方向で挟む前記芯材の2つの端部に第2溝が形成され、減圧密封された状態で、前記芯材の変形は、前記2つの端部の曲率が、前記中央部の曲率よりも大きく形成されるものである。
これによれば、真空断熱材を曲面に取り付ける際に、端部が曲面より浮く量を低減することができるので、真空断熱材の取り付けを容易に行うことができる。 The first invention includes a flat core material and an outer cover material that covers the core material, a first groove is formed in a central portion in the width direction of the core material, and the central portion is formed in the width direction. In a state where the second groove is formed at the two ends of the core material to be sandwiched and sealed under reduced pressure, the deformation of the core material is such that the curvature of the two ends is larger than the curvature of the central portion. It is a thing.
According to this, when the vacuum heat insulating material is attached to the curved surface, the amount of the end portion floating from the curved surface can be reduced, so that the vacuum heat insulating material can be easily attached.
これによれば、真空断熱材を曲面に取り付ける際に、端部が曲面より浮く量を低減することができるので、真空断熱材の取り付けを容易に行うことができる。 The first invention includes a flat core material and an outer cover material that covers the core material, a first groove is formed in a central portion in the width direction of the core material, and the central portion is formed in the width direction. In a state where the second groove is formed at the two ends of the core material to be sandwiched and sealed under reduced pressure, the deformation of the core material is such that the curvature of the two ends is larger than the curvature of the central portion. It is a thing.
According to this, when the vacuum heat insulating material is attached to the curved surface, the amount of the end portion floating from the curved surface can be reduced, so that the vacuum heat insulating material can be easily attached.
第2の発明は、前記第1溝の深さより前記第2溝の深さが深く形成されるものである。
これによれば、真空断熱材の端部の芯材を変形しやすくしでき、曲面に容易に取り付けられる真空断熱材を提供することができる。 In the second invention, the depth of the second groove is formed deeper than the depth of the first groove.
According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
これによれば、真空断熱材の端部の芯材を変形しやすくしでき、曲面に容易に取り付けられる真空断熱材を提供することができる。 In the second invention, the depth of the second groove is formed deeper than the depth of the first groove.
According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
第3の発明は、前記第1溝のピッチより、前記第2溝のピッチが狭いものである。
これによれば、真空断熱材の端部において、外被材による応力をより強く発生させて、端部を曲げやすくすることができる。そして、容易に曲面に取り付けられる真空断熱材を提供することができる。 In the third invention, the pitch of the second groove is narrower than the pitch of the first groove.
According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
これによれば、真空断熱材の端部において、外被材による応力をより強く発生させて、端部を曲げやすくすることができる。そして、容易に曲面に取り付けられる真空断熱材を提供することができる。 In the third invention, the pitch of the second groove is narrower than the pitch of the first groove.
According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
第4の発明は、前記第1溝の幅より前記第2溝の幅が広く形成されるものである。
これによれば、真空断熱材の端部において、外被材による応力をより強く発生させて、端部を曲げやすくすることができる。そして、容易に曲面に取り付けられる真空断熱材を提供することができる。 In the fourth invention, the width of the second groove is formed wider than the width of the first groove.
According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
これによれば、真空断熱材の端部において、外被材による応力をより強く発生させて、端部を曲げやすくすることができる。そして、容易に曲面に取り付けられる真空断熱材を提供することができる。 In the fourth invention, the width of the second groove is formed wider than the width of the first groove.
According to this, at the end portion of the vacuum heat insulating material, the stress due to the jacket material can be generated more strongly, and the end portion can be easily bent. Then, it is possible to provide a vacuum heat insulating material that can be easily attached to a curved surface.
第5の発明は、前記幅方向の単位長さ当たりに形成される本数は、前記第1溝より前記第2溝が多いものである。
これによれば、真空断熱材の端部の芯材を変形しやすくでき、曲面に容易に取り付けられる真空断熱材を提供することができる。 In the fifth invention, the number of lines formed per unit length in the width direction is larger than that of the first groove.
According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
これによれば、真空断熱材の端部の芯材を変形しやすくでき、曲面に容易に取り付けられる真空断熱材を提供することができる。 In the fifth invention, the number of lines formed per unit length in the width direction is larger than that of the first groove.
According to this, the core material at the end of the vacuum heat insulating material can be easily deformed, and the vacuum heat insulating material that can be easily attached to the curved surface can be provided.
第6の発明は、前記芯材の前記中央部に水分吸着剤を配置するものである。
これによれば、端部の湾曲に与える影響を抑えて、水分吸着剤を備える真空断熱材を提供することができる。 The sixth invention is to dispose a water adsorbent in the central portion of the core material.
According to this, it is possible to provide a vacuum heat insulating material provided with a moisture adsorbent while suppressing the influence on the curvature of the end portion.
これによれば、端部の湾曲に与える影響を抑えて、水分吸着剤を備える真空断熱材を提供することができる。 The sixth invention is to dispose a water adsorbent in the central portion of the core material.
According to this, it is possible to provide a vacuum heat insulating material provided with a moisture adsorbent while suppressing the influence on the curvature of the end portion.
第7の発明は、前記真空断熱材を取り付けた容器を内装する断熱箱体である。
これによれば、容易に曲面に真空断熱材を取り付けることができ、断熱箱体の製作に掛かる労力を低減することができる。 A seventh invention is a heat insulating box body containing a container to which the vacuum heat insulating material is attached.
According to this, the vacuum heat insulating material can be easily attached to the curved surface, and the labor required for manufacturing the heat insulating box can be reduced.
これによれば、容易に曲面に真空断熱材を取り付けることができ、断熱箱体の製作に掛かる労力を低減することができる。 A seventh invention is a heat insulating box body containing a container to which the vacuum heat insulating material is attached.
According to this, the vacuum heat insulating material can be easily attached to the curved surface, and the labor required for manufacturing the heat insulating box can be reduced.
以下、図面を参照して本発明の一実施の形態を説明する。
図1は、本実施の形態に係る溝の配置構成を示すために芯材を平板状に展開した真空断熱材の断面図である。図2は、本実施の形態に係る真空断熱材を示す概略斜視図である。図3は、円筒形状物に取り付けられる真空断熱材を示す説明図である。
図中UPは上方を示し、Wは真空断熱材の幅方向を示し、Dは真空断熱材の長さ方向を示す。なお、図1において、上方UPは真空断熱材の厚み方向に一致する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a vacuum heat insulating material in which the core material is developed into a flat plate to show the arrangement configuration of the grooves according to the present embodiment. FIG. 2 is a schematic perspective view showing the vacuum heat insulating material according to the present embodiment. FIG. 3 is an explanatory view showing a vacuum heat insulating material attached to a cylindrical object.
In the figure, UP indicates the upper side, W indicates the width direction of the vacuum heat insulating material, and D indicates the length direction of the vacuum heat insulating material. In addition, in FIG. 1, the upper UP corresponds to the thickness direction of the vacuum heat insulating material.
図1は、本実施の形態に係る溝の配置構成を示すために芯材を平板状に展開した真空断熱材の断面図である。図2は、本実施の形態に係る真空断熱材を示す概略斜視図である。図3は、円筒形状物に取り付けられる真空断熱材を示す説明図である。
図中UPは上方を示し、Wは真空断熱材の幅方向を示し、Dは真空断熱材の長さ方向を示す。なお、図1において、上方UPは真空断熱材の厚み方向に一致する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a vacuum heat insulating material in which the core material is developed into a flat plate to show the arrangement configuration of the grooves according to the present embodiment. FIG. 2 is a schematic perspective view showing the vacuum heat insulating material according to the present embodiment. FIG. 3 is an explanatory view showing a vacuum heat insulating material attached to a cylindrical object.
In the figure, UP indicates the upper side, W indicates the width direction of the vacuum heat insulating material, and D indicates the length direction of the vacuum heat insulating material. In addition, in FIG. 1, the upper UP corresponds to the thickness direction of the vacuum heat insulating material.
図1に示すように、真空断熱材1は、芯材3と、芯材3の外側を被覆する外被材2と、を備える。また、芯材3内には水分吸着剤4が配置される。
芯材3は一定の厚みの平板状であり、袋状の外被材2内に挿入され減圧密封される。これにより、平板状の真空断熱材1が得られる。 As shown in FIG. 1, the vacuumheat insulating material 1 includes a core material 3 and an outer cover material 2 that covers the outside of the core material 3. Further, the moisture adsorbent 4 is arranged in the core material 3.
Thecore material 3 is a flat plate having a constant thickness, is inserted into the bag-shaped outer cover material 2, and is sealed under reduced pressure. As a result, the flat plate-shaped vacuum heat insulating material 1 is obtained.
芯材3は一定の厚みの平板状であり、袋状の外被材2内に挿入され減圧密封される。これにより、平板状の真空断熱材1が得られる。 As shown in FIG. 1, the vacuum
The
真空断熱材1の一方の主面10には、複数の第1溝21及び第2溝22が形成される。
中央部11は真空断熱材1の幅方向Wの中央部分であり、幅方向Wにおいて端部12と端部13との間に位置する。
真空断熱材1において、端部12及び端部13は、真空断熱材1の幅方向Wにおいて、それぞれ端12a、端13aから幅方向Wの内側に所定の距離Lまでの部分である。そして、端部12及び端部13以外の部分が、中央部11となる。なお、距離Lは、真空断熱材1の大きさや、真空断熱材1が取り付けられる曲面の形状や作業性によって適宜設定されるものである。例えば、真空断熱材1の寸法が410mm×幅1020mm×厚み15mmとした場合には、所定の距離Lを200mm~100mmとすることが好ましい。 A plurality offirst grooves 21 and second grooves 22 are formed on one main surface 10 of the vacuum heat insulating material 1.
Thecentral portion 11 is the central portion of the vacuum heat insulating material 1 in the width direction W, and is located between the end portions 12 and the end portions 13 in the width direction W.
In the vacuumheat insulating material 1, the end portion 12 and the end portion 13 are portions in the width direction W of the vacuum heat insulating material 1 from the end 12a and the end 13a to the inside of the width direction W up to a predetermined distance L. Then, a portion other than the end portion 12 and the end portion 13 becomes the central portion 11. The distance L is appropriately set depending on the size of the vacuum heat insulating material 1, the shape of the curved surface to which the vacuum heat insulating material 1 is attached, and workability. For example, when the dimensions of the vacuum heat insulating material 1 are 410 mm × width 1020 mm × thickness 15 mm, it is preferable that the predetermined distance L is 200 mm to 100 mm.
中央部11は真空断熱材1の幅方向Wの中央部分であり、幅方向Wにおいて端部12と端部13との間に位置する。
真空断熱材1において、端部12及び端部13は、真空断熱材1の幅方向Wにおいて、それぞれ端12a、端13aから幅方向Wの内側に所定の距離Lまでの部分である。そして、端部12及び端部13以外の部分が、中央部11となる。なお、距離Lは、真空断熱材1の大きさや、真空断熱材1が取り付けられる曲面の形状や作業性によって適宜設定されるものである。例えば、真空断熱材1の寸法が410mm×幅1020mm×厚み15mmとした場合には、所定の距離Lを200mm~100mmとすることが好ましい。 A plurality of
The
In the vacuum
中央部11の芯材3には第1溝21が形成され、端部12及び端部13には第2溝22が形成される。第1溝21及び第2溝22は、真空断熱材1の長さ方向Dに渡って直線状に形成されている。
第1溝21及び第2溝22は、幅方向Wに沿った断面形状がV字状である。そして、第1溝21の主面10からの深さD1は、第2溝22の主面10からの深さD2よりも浅く形成される。これにより、第2溝22を形成した部位の厚みが、第1溝21を形成した部位の厚みより薄くなり、第2溝22を形成した部位が変形しやすくなる。
例えば、第1溝21の深さD1を第2溝22の深さD2の80%以下としても良い。 Afirst groove 21 is formed in the core material 3 of the central portion 11, and a second groove 22 is formed in the end portion 12 and the end portion 13. The first groove 21 and the second groove 22 are formed linearly along the length direction D of the vacuum heat insulating material 1.
Thefirst groove 21 and the second groove 22 have a V-shaped cross section along the width direction W. The depth D1 of the first groove 21 from the main surface 10 is formed to be shallower than the depth D2 of the second groove 22 from the main surface 10. As a result, the thickness of the portion where the second groove 22 is formed becomes thinner than the thickness of the portion where the first groove 21 is formed, and the portion where the second groove 22 is formed is easily deformed.
For example, the depth D1 of thefirst groove 21 may be 80% or less of the depth D2 of the second groove 22.
第1溝21及び第2溝22は、幅方向Wに沿った断面形状がV字状である。そして、第1溝21の主面10からの深さD1は、第2溝22の主面10からの深さD2よりも浅く形成される。これにより、第2溝22を形成した部位の厚みが、第1溝21を形成した部位の厚みより薄くなり、第2溝22を形成した部位が変形しやすくなる。
例えば、第1溝21の深さD1を第2溝22の深さD2の80%以下としても良い。 A
The
For example, the depth D1 of the
なお、第1溝21の主面10における幅W1は、第2溝22の主面10における幅W2よりも狭く形成しても良い。形成される溝の幅が広い程、外被材2により応力が生じやすくなる。そして、溝が形成された部位は変形しやすくなる。
The width W1 on the main surface 10 of the first groove 21 may be formed narrower than the width W2 on the main surface 10 of the second groove 22. The wider the groove formed, the more stress is likely to be generated by the outer cover material 2. Then, the portion where the groove is formed is easily deformed.
また、第1溝21のピッチP1を、第2溝22のピッチP2より広くしても良い。これにより、端部12及び端部13を中央部11よりも、曲げられやすくできる。例えば、第1溝21のピッチP1を、第2溝22のピッチP2の2倍以上としても良い。
また、第1溝21及び第2溝22を形成する本数は、限定されるものでははく、取り付けられる曲面に応じて、適宜設定される。 Further, the pitch P1 of thefirst groove 21 may be wider than the pitch P2 of the second groove 22. As a result, the end portion 12 and the end portion 13 can be bent more easily than the central portion 11. For example, the pitch P1 of the first groove 21 may be twice or more the pitch P2 of the second groove 22.
Further, the number of thefirst groove 21 and the second groove 22 is not limited, and is appropriately set according to the curved surface to be attached.
また、第1溝21及び第2溝22を形成する本数は、限定されるものでははく、取り付けられる曲面に応じて、適宜設定される。 Further, the pitch P1 of the
Further, the number of the
この他に、中央部11において、幅方向Wの単位長さ当たりに形成される第1溝21の数を、端部12及び端部13において幅方向Wの単位長さ当たりに形成される第2溝22の数より少なくしても良い。
第1溝21の深さD1及び幅W1と、第2溝22の深さD2及び幅W2とを、同じとした場合においても、幅方向Wの単位長さ当たりに形成される本数が多い部位は曲がりやすくなる。このため、幅方向Wの単位長さ当たりに形成される溝の本数を調節することにより、端部12及び端部13を中央部11よりも曲げやすくすることができる。 In addition to this, the number offirst grooves 21 formed per unit length in the width direction W at the central portion 11 is formed per unit length in the width direction W at the end portions 12 and 13. It may be less than the number of 2 grooves 22.
Even when the depth D1 and width W1 of thefirst groove 21 and the depth D2 and width W2 of the second groove 22 are the same, a large number of portions are formed per unit length in the width direction W. Is easy to bend. Therefore, by adjusting the number of grooves formed per unit length in the width direction W, the end portion 12 and the end portion 13 can be made easier to bend than the central portion 11.
第1溝21の深さD1及び幅W1と、第2溝22の深さD2及び幅W2とを、同じとした場合においても、幅方向Wの単位長さ当たりに形成される本数が多い部位は曲がりやすくなる。このため、幅方向Wの単位長さ当たりに形成される溝の本数を調節することにより、端部12及び端部13を中央部11よりも曲げやすくすることができる。 In addition to this, the number of
Even when the depth D1 and width W1 of the
上記構成において、芯材3は、特に限定するものではないが、減圧封止した際に大気圧に抗して厚さを保つことができ、空隙率が高く、固体熱伝導率が低いものを用いることができる。例えば、無機粉末集合体、特にシリカ粉末や、無機繊維集合体、特に、ガラス繊維集合体を用いることができる。
In the above configuration, the core material 3 is not particularly limited, but the core material 3 can maintain its thickness against atmospheric pressure when sealed under reduced pressure, has a high porosity, and has a low solid thermal conductivity. Can be used. For example, an inorganic powder aggregate, particularly silica powder, or an inorganic fiber aggregate, particularly a glass fiber aggregate, can be used.
水分吸着剤4の材料は、特に限定するものではないが、一度吸着した水分との結合エネルギーが大きく、単位重量あたりの吸着量が多いものが好ましく、例えば、酸化カルシウム、酸化カリウムなどを用いることができる。
The material of the water adsorbent 4 is not particularly limited, but a material having a large binding energy with the water once adsorbed and a large amount of adsorbed per unit weight is preferable, and for example, calcium oxide, potassium oxide or the like is used. Can be done.
また、外被材2は、特に限定するものではないが、気体バリア性に優れており、大気中に真空断熱材を保存しても、内部に侵入する空気が少ないもの用いることができる。
例えば、気体透過度は104[cm3/m2・day・atm]以下のものが使用でき、好ましくは、103[cm3/m2・day・atm]以下のもの、さらに好ましくは、102[cm3/m2・day・atm]以下のものを用いることができる。
このような性質を満たすものとして、気体バリア層を有するプラスチックラミネートフィルムを製袋したものを用いることができる。気体バリア層は、特に限定するものではないが、アルミニウム箔などの金属箔、プラスチックフィルムにアルミニウムなどの金属や、シリカ、カーボンなどを蒸着したものであってもよい。 Further, theouter cover material 2 is not particularly limited, but it is excellent in gas barrier property, and even if the vacuum heat insulating material is stored in the atmosphere, a material having a small amount of air entering the inside can be used.
For example, a gas permeability of 104 [cm 3 / m 2 · day · atm] or less can be used, preferably 103 [cm 3 / m 2 · day · atm] or less, and more preferably 102 [. cm 3 / m 2 · day · atm] or less can be used.
As a material satisfying such properties, a bag made of a plastic laminated film having a gas barrier layer can be used. The gas barrier layer is not particularly limited, but may be a metal foil such as an aluminum foil, or a plastic film on which a metal such as aluminum, silica, carbon, or the like is vapor-deposited.
例えば、気体透過度は104[cm3/m2・day・atm]以下のものが使用でき、好ましくは、103[cm3/m2・day・atm]以下のもの、さらに好ましくは、102[cm3/m2・day・atm]以下のものを用いることができる。
このような性質を満たすものとして、気体バリア層を有するプラスチックラミネートフィルムを製袋したものを用いることができる。気体バリア層は、特に限定するものではないが、アルミニウム箔などの金属箔、プラスチックフィルムにアルミニウムなどの金属や、シリカ、カーボンなどを蒸着したものであってもよい。 Further, the
For example, a gas permeability of 104 [cm 3 / m 2 · day · atm] or less can be used, preferably 103 [cm 3 / m 2 · day · atm] or less, and more preferably 102 [. cm 3 / m 2 · day · atm] or less can be used.
As a material satisfying such properties, a bag made of a plastic laminated film having a gas barrier layer can be used. The gas barrier layer is not particularly limited, but may be a metal foil such as an aluminum foil, or a plastic film on which a metal such as aluminum, silica, carbon, or the like is vapor-deposited.
次に、真空断熱材1の形成方法について説明する。
第1の真空断熱材1の形成手段は、平板状の芯材3を袋状に成形された外被材2内に挿入し、外被材2内を真空引きして芯材3を真空包装する。そして、外被材2の上からプレス加工することにより、真空断熱材1に第1溝21及び第2溝22が形成される。このため、平板状の真空断熱材から、容易に曲面に取り付け易い真空断熱材1を得ることができる。
なお、第1溝21及び第2溝22の断面形状をV字状とする場合には、断面形状がV字状の型が用いられ、断面形状をU字形状や、矩形形状とする場合には、対応する断面形状の型が用いられる。 Next, a method of forming the vacuumheat insulating material 1 will be described.
The first means for forming the vacuumheat insulating material 1 is to insert the flat plate-shaped core material 3 into the bag-shaped outer cover material 2, evacuate the inside of the outer cover material 2, and vacuum-pack the core material 3. To do. Then, the first groove 21 and the second groove 22 are formed in the vacuum heat insulating material 1 by press working from above the outer cover material 2. Therefore, the vacuum heat insulating material 1 that can be easily attached to the curved surface can be obtained from the flat plate vacuum heat insulating material.
When the cross-sectional shape of thefirst groove 21 and the second groove 22 is V-shaped, a V-shaped cross-sectional shape is used, and when the cross-sectional shape is U-shaped or rectangular. The corresponding cross-sectional shape mold is used.
第1の真空断熱材1の形成手段は、平板状の芯材3を袋状に成形された外被材2内に挿入し、外被材2内を真空引きして芯材3を真空包装する。そして、外被材2の上からプレス加工することにより、真空断熱材1に第1溝21及び第2溝22が形成される。このため、平板状の真空断熱材から、容易に曲面に取り付け易い真空断熱材1を得ることができる。
なお、第1溝21及び第2溝22の断面形状をV字状とする場合には、断面形状がV字状の型が用いられ、断面形状をU字形状や、矩形形状とする場合には、対応する断面形状の型が用いられる。 Next, a method of forming the vacuum
The first means for forming the vacuum
When the cross-sectional shape of the
第2の真空断熱材1の形成手段は、平板状の芯材3に第1溝21及び第2溝22を形成した後に、芯材3を外被材2内に挿入して真空包装する。そして、芯材3が真空包装されることにより、第1溝21及び第2溝22が形成された側の外被材2に応力が発生し、湾曲する。
芯材3の形状により湾曲するため、外被材2に掛かる負荷を軽減することができる。
また、芯材3には、プレス加工を施して第1溝21及び第2溝22を形成しても良く、芯材3を切削して、形成しても良い。 The means for forming the second vacuumheat insulating material 1 is to form the first groove 21 and the second groove 22 in the flat plate-shaped core material 3, and then insert the core material 3 into the outer cover material 2 for vacuum packaging. Then, when the core material 3 is vacuum-packed, stress is generated in the outer cover material 2 on the side where the first groove 21 and the second groove 22 are formed, and the core material 3 is curved.
Since it is curved due to the shape of thecore material 3, the load applied to the outer cover material 2 can be reduced.
Further, thecore material 3 may be pressed to form the first groove 21 and the second groove 22, or the core material 3 may be cut to form the core material 3.
芯材3の形状により湾曲するため、外被材2に掛かる負荷を軽減することができる。
また、芯材3には、プレス加工を施して第1溝21及び第2溝22を形成しても良く、芯材3を切削して、形成しても良い。 The means for forming the second vacuum
Since it is curved due to the shape of the
Further, the
なお、図1では、第1溝21及び第2溝22は、真空断熱材1の一方の主面10に配置されているが、第1溝21及び第2溝22は真空断熱材1の両面に形成してもよい。
In FIG. 1, the first groove 21 and the second groove 22 are arranged on one main surface 10 of the vacuum heat insulating material 1, but the first groove 21 and the second groove 22 are both sides of the vacuum heat insulating material 1. May be formed in.
次に、真空断熱材1の使用状態について、図2を用いて説明する。
真空断熱材1の第1溝21及び第2溝22を形成した部位には、外被材2からの応力が掛かる。このため、図2に示すように、主面10を内側にして湾曲した形状となる。 Next, the usage state of the vacuumheat insulating material 1 will be described with reference to FIG.
The stress from theouter cover material 2 is applied to the portions of the vacuum heat insulating material 1 where the first groove 21 and the second groove 22 are formed. Therefore, as shown in FIG. 2, the shape is curved with the main surface 10 inside.
真空断熱材1の第1溝21及び第2溝22を形成した部位には、外被材2からの応力が掛かる。このため、図2に示すように、主面10を内側にして湾曲した形状となる。 Next, the usage state of the vacuum
The stress from the
前述のように、第2溝22より、第1溝21が浅く形成されるので、端部12及び端部13より、中央部11は曲がり難くなる。このため、真空断熱材1は、中央部11の曲率よりも、端部12及び端部13の曲率が大きくなる。すなわち、真空断熱材1において、中央部11の曲率半径R1より端部12の曲率半径R2及び端部13の曲率半径R3は小さくなっている。
なお、中央部11を端部12及び端部13より曲がり難くするために、前述のように、第1溝21のピッチP1を第2溝22のピッチP2より広くしたり、第1溝21の幅W1を第2溝22の幅W2より狭くしたりしても良い。
中央部11の曲率が小さく形成されるため、真空断熱材1を平らな台等に載置した場合、端12a及び端13aの台から高さHを低くすることができる。 As described above, since thefirst groove 21 is formed shallower than the second groove 22, the central portion 11 is more difficult to bend than the end portion 12 and the end portion 13. Therefore, in the vacuum heat insulating material 1, the curvatures of the end portion 12 and the end portion 13 are larger than the curvature of the central portion 11. That is, in the vacuum heat insulating material 1, the radius of curvature R2 of the end portion 12 and the radius of curvature R3 of the end portion 13 are smaller than the radius of curvature R1 of the central portion 11.
In addition, in order to make thecentral portion 11 more difficult to bend than the end portion 12 and the end portion 13, as described above, the pitch P1 of the first groove 21 may be wider than the pitch P2 of the second groove 22, or the pitch P2 of the first groove 21 The width W1 may be narrower than the width W2 of the second groove 22.
Since the curvature of thecentral portion 11 is formed to be small, when the vacuum heat insulating material 1 is placed on a flat table or the like, the height H can be lowered from the table at the ends 12a and 13a.
なお、中央部11を端部12及び端部13より曲がり難くするために、前述のように、第1溝21のピッチP1を第2溝22のピッチP2より広くしたり、第1溝21の幅W1を第2溝22の幅W2より狭くしたりしても良い。
中央部11の曲率が小さく形成されるため、真空断熱材1を平らな台等に載置した場合、端12a及び端13aの台から高さHを低くすることができる。 As described above, since the
In addition, in order to make the
Since the curvature of the
次に、真空断熱材1を用いた断熱箱体6について説明する。
図3に示すように、断熱箱体6は、保温保冷容器である円筒形状のタンク5を内装する。そして、タンク5の外周面51に真空断熱材1が取り付けられる。外周面51が真空断熱材1の施工面であり、外周面51に真空断熱材1が密着して取り付けられる。
真空断熱材1は、タンク5の外周面51に端部12が取り付けられた後に、中央部11が外周面51に巻き付けられる。そして、端部13に力Fが加えられ、端部13が外周面51に沿わせられる。
真空断熱材1が取り付けられたタンク5は断熱箱体6の筐体61に内装される。なお、筐体61と真空断熱材1との間に、さらに断熱材を配置してもよい。 Next, the heat insulatingbox body 6 using the vacuum heat insulating material 1 will be described.
As shown in FIG. 3, the heat insulatingbox body 6 contains a cylindrical tank 5 which is a heat and cold insulation container. Then, the vacuum heat insulating material 1 is attached to the outer peripheral surface 51 of the tank 5. The outer peripheral surface 51 is the construction surface of the vacuum heat insulating material 1, and the vacuum heat insulating material 1 is closely attached to the outer peripheral surface 51.
In the vacuumheat insulating material 1, the central portion 11 is wound around the outer peripheral surface 51 after the end portion 12 is attached to the outer peripheral surface 51 of the tank 5. Then, a force F is applied to the end portion 13 so that the end portion 13 is aligned with the outer peripheral surface 51.
Thetank 5 to which the vacuum heat insulating material 1 is attached is housed in the housing 61 of the heat insulating box body 6. A heat insulating material may be further arranged between the housing 61 and the vacuum heat insulating material 1.
図3に示すように、断熱箱体6は、保温保冷容器である円筒形状のタンク5を内装する。そして、タンク5の外周面51に真空断熱材1が取り付けられる。外周面51が真空断熱材1の施工面であり、外周面51に真空断熱材1が密着して取り付けられる。
真空断熱材1は、タンク5の外周面51に端部12が取り付けられた後に、中央部11が外周面51に巻き付けられる。そして、端部13に力Fが加えられ、端部13が外周面51に沿わせられる。
真空断熱材1が取り付けられたタンク5は断熱箱体6の筐体61に内装される。なお、筐体61と真空断熱材1との間に、さらに断熱材を配置してもよい。 Next, the heat insulating
As shown in FIG. 3, the heat insulating
In the vacuum
The
次に、本実施の形態の作用について説明する。
真空断熱材1がタンク5の外周面51に取り付けられる際には、端部12及び端部13が湾曲しているため、端部12及び端部13の変形量を少なくすることができる。このため、端部12及び端部13を変形させて取り付けるための力が低減される。特に、端部12及び端部13の曲率を外周面51の曲率以上とすることにより、容易に端部12及び端部13の外周面51からの浮き上がりを抑えやすくすることができる。
そして、タンク5と真空断熱材1との隙間を低減させることができ、タンク5の保温保冷性能を向上させることができる。 Next, the operation of the present embodiment will be described.
When the vacuumheat insulating material 1 is attached to the outer peripheral surface 51 of the tank 5, since the end portion 12 and the end portion 13 are curved, the amount of deformation of the end portion 12 and the end portion 13 can be reduced. Therefore, the force for deforming and attaching the end portion 12 and the end portion 13 is reduced. In particular, by setting the curvature of the end portion 12 and the end portion 13 to be equal to or greater than the curvature of the outer peripheral surface 51, it is possible to easily suppress the lifting of the end portion 12 and the end portion 13 from the outer peripheral surface 51.
Then, the gap between thetank 5 and the vacuum heat insulating material 1 can be reduced, and the heat and cold insulation performance of the tank 5 can be improved.
真空断熱材1がタンク5の外周面51に取り付けられる際には、端部12及び端部13が湾曲しているため、端部12及び端部13の変形量を少なくすることができる。このため、端部12及び端部13を変形させて取り付けるための力が低減される。特に、端部12及び端部13の曲率を外周面51の曲率以上とすることにより、容易に端部12及び端部13の外周面51からの浮き上がりを抑えやすくすることができる。
そして、タンク5と真空断熱材1との隙間を低減させることができ、タンク5の保温保冷性能を向上させることができる。 Next, the operation of the present embodiment will be described.
When the vacuum
Then, the gap between the
真空断熱材1の外周面51への取り付けは、例えば、端部12が外周面51に取り付けられ、真空断熱材1は外周面51に密着されながら、タンク5に巻かれる。中央部11は端部12側及び端部13側より力を受けるため、曲率が小さくても効率的に変形させることができる。
Regarding the attachment of the vacuum heat insulating material 1 to the outer peripheral surface 51, for example, the end portion 12 is attached to the outer peripheral surface 51, and the vacuum heat insulating material 1 is wound around the tank 5 while being in close contact with the outer peripheral surface 51. Since the central portion 11 receives a force from the end portion 12 side and the end portion 13 side, it can be efficiently deformed even if the curvature is small.
さらに、中央部11において第1溝21の深さD1が浅く、幅W1狭く、又は、ピッチP1が広く成形されると、中央部11において芯材3の厚みの低下を抑えられる。これにより、真空断熱材1の断熱効率が向上される。
特に、芯材3の圧縮により溝が形成される場合、中央部11に形成される溝が少ないため、芯材3の密度の高い部分を少なくすることができ、もしくは芯材3の密度を比較的低くすることができる。このため、第1溝21の形成により中央部11が受ける断熱性能への影響を軽減することができる。
また、中央部11において、均等に同一深さの第1溝21を形成することにより、外被材2への負荷を軽減でき、外被材2のガスバリア性への影響を軽減することができる。 Further, when the depth D1 of thefirst groove 21 is shallow and the width W1 is narrow or the pitch P1 is wide in the central portion 11, the decrease in the thickness of the core material 3 can be suppressed in the central portion 11. As a result, the heat insulating efficiency of the vacuum heat insulating material 1 is improved.
In particular, when grooves are formed by compression of thecore material 3, since there are few grooves formed in the central portion 11, it is possible to reduce the dense portion of the core material 3, or compare the densities of the core materials 3. It can be lowered. Therefore, the influence of the formation of the first groove 21 on the heat insulating performance of the central portion 11 can be reduced.
Further, by forming thefirst groove 21 having the same depth evenly in the central portion 11, the load on the outer cover material 2 can be reduced, and the influence of the outer cover material 2 on the gas barrier property can be reduced. ..
特に、芯材3の圧縮により溝が形成される場合、中央部11に形成される溝が少ないため、芯材3の密度の高い部分を少なくすることができ、もしくは芯材3の密度を比較的低くすることができる。このため、第1溝21の形成により中央部11が受ける断熱性能への影響を軽減することができる。
また、中央部11において、均等に同一深さの第1溝21を形成することにより、外被材2への負荷を軽減でき、外被材2のガスバリア性への影響を軽減することができる。 Further, when the depth D1 of the
In particular, when grooves are formed by compression of the
Further, by forming the
そして、真空断熱材1を搬送する際には、真空断熱材1の高さHを低く抑えることができるため、搬送の効率を向上させることができる。
主面10を上にして台に載せた場合、真空断熱材1は中央部11の曲率が小いため、高さHが低く抑えられる。このため、中央部11の曲率が大きい場合と比べて、真空断熱材1がかさばり難く、真空断熱材1を効率的に搬送することができる。
また、搬送時の上下方向の振動により真空断熱材1が撓む場合にも、端部12及び端部13が撓みにより動く距離を少なくできる。これにより、搬送などにより真空断熱材1が受ける負荷を低減することができる。 Then, when the vacuumheat insulating material 1 is conveyed, the height H of the vacuum heat insulating material 1 can be kept low, so that the efficiency of the transfer can be improved.
When the vacuumheat insulating material 1 is placed on the table with the main surface 10 facing up, the height H of the vacuum heat insulating material 1 is suppressed to be low because the curvature of the central portion 11 is small. Therefore, the vacuum heat insulating material 1 is less bulky than the case where the curvature of the central portion 11 is large, and the vacuum heat insulating material 1 can be efficiently conveyed.
Further, even when the vacuumheat insulating material 1 is bent due to the vertical vibration during transportation, the distance that the end portion 12 and the end portion 13 move due to the bending can be reduced. As a result, the load received on the vacuum heat insulating material 1 due to transportation or the like can be reduced.
主面10を上にして台に載せた場合、真空断熱材1は中央部11の曲率が小いため、高さHが低く抑えられる。このため、中央部11の曲率が大きい場合と比べて、真空断熱材1がかさばり難く、真空断熱材1を効率的に搬送することができる。
また、搬送時の上下方向の振動により真空断熱材1が撓む場合にも、端部12及び端部13が撓みにより動く距離を少なくできる。これにより、搬送などにより真空断熱材1が受ける負荷を低減することができる。 Then, when the vacuum
When the vacuum
Further, even when the vacuum
(実施例1)
次に、第1実施の形態における真空断熱材の実施例1について説明する。
実施例1の真空断熱材1の芯材3には、グラスウールを用いた。芯材3のサイズは縦410mm×幅1020mm×厚み15mmであり、重量は1520gとした。
水分吸着剤4には、酸化カルシウムを用いた。重量は、15gとした。水分吸着剤4は、芯材3の幅方向及び縦方向に対して略中央に配置した。 (Example 1)
Next, Example 1 of the vacuum heat insulating material in the first embodiment will be described.
Glass wool was used as thecore material 3 of the vacuum heat insulating material 1 of Example 1. The size of the core material 3 was 410 mm in length × 1020 mm in width × 15 mm in thickness, and the weight was 1520 g.
Calcium oxide was used as thewater adsorbent 4. The weight was 15 g. The water adsorbent 4 was arranged substantially in the center with respect to the width direction and the vertical direction of the core material 3.
次に、第1実施の形態における真空断熱材の実施例1について説明する。
実施例1の真空断熱材1の芯材3には、グラスウールを用いた。芯材3のサイズは縦410mm×幅1020mm×厚み15mmであり、重量は1520gとした。
水分吸着剤4には、酸化カルシウムを用いた。重量は、15gとした。水分吸着剤4は、芯材3の幅方向及び縦方向に対して略中央に配置した。 (Example 1)
Next, Example 1 of the vacuum heat insulating material in the first embodiment will be described.
Glass wool was used as the
Calcium oxide was used as the
外被材2には、2種類のフィルムを使用した。
主面10となる一方の面には、15μmのナイロン層と、25μmのナイロン層と、6μmのアルミニウム層と、50μmの低密度ポリエチレン層を重ねた複合フィルムを用いた。
もう一方の面には、25μmのナイロン層と、アルミニウムを蒸着させた12μmのポリエステルテレフタレート層と、アルミニウムを蒸着させた12μmのエチレンビニルアルコール樹脂層と、50μmの低密度ポリエチレン層を用いた。
上記2種のフィルムの低密度ポリエチレン層同士を対向させ、周縁部を熱溶着することで袋状に成形した。 Two types of films were used for theouter cover material 2.
For one surface to be themain surface 10, a composite film in which a 15 μm nylon layer, a 25 μm nylon layer, a 6 μm aluminum layer, and a 50 μm low-density polyethylene layer were laminated was used.
On the other surface, a 25 μm nylon layer, a 12 μm polyester terephthalate layer vapor-deposited with aluminum, a 12 μm ethylene vinyl alcohol resin layer vapor-deposited with aluminum, and a 50 μm low-density polyethylene layer were used.
The low-density polyethylene layers of the above two types of films were opposed to each other, and the peripheral edges were heat-welded to form a bag.
主面10となる一方の面には、15μmのナイロン層と、25μmのナイロン層と、6μmのアルミニウム層と、50μmの低密度ポリエチレン層を重ねた複合フィルムを用いた。
もう一方の面には、25μmのナイロン層と、アルミニウムを蒸着させた12μmのポリエステルテレフタレート層と、アルミニウムを蒸着させた12μmのエチレンビニルアルコール樹脂層と、50μmの低密度ポリエチレン層を用いた。
上記2種のフィルムの低密度ポリエチレン層同士を対向させ、周縁部を熱溶着することで袋状に成形した。 Two types of films were used for the
For one surface to be the
On the other surface, a 25 μm nylon layer, a 12 μm polyester terephthalate layer vapor-deposited with aluminum, a 12 μm ethylene vinyl alcohol resin layer vapor-deposited with aluminum, and a 50 μm low-density polyethylene layer were used.
The low-density polyethylene layers of the above two types of films were opposed to each other, and the peripheral edges were heat-welded to form a bag.
真空断熱材1の主面10には縦方向と平行に複数の溝が形成された。真空断熱材1の両端から幅方向で200mmの範囲をそれぞれ端部12、端部13とした。そして、端部12と端部13との間を中央部11とした。
端部12及び端部13に形成される第2溝22はピッチP2を20mmとし、深さD2を8mmとして形成した。
中央部11に形成される第1溝21は、ピッチP1を50mmとし、深さD1を3mmとして、形成した。
第1溝21及び第2溝22は、金型プレスにより芯材3を圧縮して形成した。 A plurality of grooves were formed on themain surface 10 of the vacuum heat insulating material 1 in parallel with the vertical direction. The range of 200 mm in the width direction from both ends of the vacuum heat insulating material 1 was defined as the end portion 12 and the end portion 13, respectively. Then, the space between the end portion 12 and the end portion 13 is defined as the central portion 11.
Thesecond groove 22 formed in the end portion 12 and the end portion 13 was formed with a pitch P2 of 20 mm and a depth D2 of 8 mm.
Thefirst groove 21 formed in the central portion 11 was formed with a pitch P1 of 50 mm and a depth D1 of 3 mm.
Thefirst groove 21 and the second groove 22 were formed by compressing the core material 3 by a die press.
端部12及び端部13に形成される第2溝22はピッチP2を20mmとし、深さD2を8mmとして形成した。
中央部11に形成される第1溝21は、ピッチP1を50mmとし、深さD1を3mmとして、形成した。
第1溝21及び第2溝22は、金型プレスにより芯材3を圧縮して形成した。 A plurality of grooves were formed on the
The
The
The
水分吸着剤4は、60mm×94mmの包材が連包された60mm×188mmのものを使用した。これは、ロールプレスなどで真空断熱材1の表面をならす際に、水分吸着剤4が芯材3と共に押し固められ、真空断熱材1が曲げにくくなる可能性を考慮したものである。水分吸着剤4のサイズはこの限りではなく、例えば30mm×230mmの包材が連包された60mm×230mmを使用することも可能である。
The water adsorbent 4 used was 60 mm × 188 mm in which a packaging material of 60 mm × 94 mm was continuously packaged. This is in consideration of the possibility that the moisture adsorbent 4 is compacted together with the core material 3 when the surface of the vacuum heat insulating material 1 is smoothed by a roll press or the like, and the vacuum heat insulating material 1 becomes difficult to bend. The size of the water adsorbent 4 is not limited to this, and for example, 60 mm × 230 mm in which a packaging material of 30 mm × 230 mm is continuously packaged can be used.
なお、水分吸着剤4が配置されている部位には、第1溝21を形成しなかった。また、第1溝21のピッチを60mm以上とし、水分吸着剤4を中央部11の幅方向の一方に寄せて配置し、中央部11の他方に60mm×60mm以上の平面部が形成してもよい。そして、この平面部に、例えば熱流速計などを配置して、溝加工後の真空断熱材1の検査工程で利用しても良い。
The first groove 21 was not formed at the portion where the water adsorbent 4 was arranged. Further, even if the pitch of the first groove 21 is 60 mm or more, the moisture adsorbent 4 is arranged close to one side in the width direction of the central portion 11, and a flat portion of 60 mm × 60 mm or more is formed on the other side of the central portion 11. Good. Then, for example, a heat flow meter or the like may be arranged on this flat surface portion and used in the inspection step of the vacuum heat insulating material 1 after grooving.
(比較例1)
次に、真空断熱材の比較例1について説明する。
比較例1において、溝の配置、溝の深さ、及び溝のピッチ以外は、実施例1の真空断熱材と同じである。
比較例1の真空断熱材において、真空断熱材の一方の主面に縦方向と平行に複数の溝を形成した。各溝の深さは8mmとし、溝を20mmのピッチで均等に配置した。 (Comparative Example 1)
Next, Comparative Example 1 of the vacuum heat insulating material will be described.
In Comparative Example 1, the vacuum heat insulating material of Example 1 is the same except for the arrangement of the grooves, the depth of the grooves, and the pitch of the grooves.
In the vacuum heat insulating material of Comparative Example 1, a plurality of grooves were formed on one main surface of the vacuum heat insulating material in parallel with the vertical direction. The depth of each groove was 8 mm, and the grooves were evenly arranged at a pitch of 20 mm.
次に、真空断熱材の比較例1について説明する。
比較例1において、溝の配置、溝の深さ、及び溝のピッチ以外は、実施例1の真空断熱材と同じである。
比較例1の真空断熱材において、真空断熱材の一方の主面に縦方向と平行に複数の溝を形成した。各溝の深さは8mmとし、溝を20mmのピッチで均等に配置した。 (Comparative Example 1)
Next, Comparative Example 1 of the vacuum heat insulating material will be described.
In Comparative Example 1, the vacuum heat insulating material of Example 1 is the same except for the arrangement of the grooves, the depth of the grooves, and the pitch of the grooves.
In the vacuum heat insulating material of Comparative Example 1, a plurality of grooves were formed on one main surface of the vacuum heat insulating material in parallel with the vertical direction. The depth of each groove was 8 mm, and the grooves were evenly arranged at a pitch of 20 mm.
(比較方法)
実施例1及び比較例1の真空断熱材について、円筒形状の施工面への施工性と、真空断熱材の曲がり量とを比較した。
施工性の目安として、図3に示すように、円筒形状の施工面に真空断熱材の一端部を取り付けた状態で、真空断熱材を施工面に巻き付け、他端部を施工面に沿わせるために必要な力Fを測定した。なお、施工面は、直径350mmの給湯器用のタンク5の外周面51を用いた。
曲がり量の目安として、図2に示すように、溝の形成された主面を上方に向けて、真空断熱材を平面に置き、幅方向の端について平面からの高さHを測定した。なお、高さHは、真空断熱材の曲がり量に対応する。 (Comparison method)
Regarding the vacuum heat insulating materials of Example 1 and Comparative Example 1, the workability on the cylindrical construction surface and the bending amount of the vacuum heat insulating material were compared.
As a guideline for workability, as shown in FIG. 3, the vacuum heat insulating material is wound around the construction surface with one end of the vacuum heat insulating material attached to the cylindrical construction surface, and the other end is aligned with the construction surface. The force F required for the was measured. As the construction surface, the outerperipheral surface 51 of the tank 5 for a water heater having a diameter of 350 mm was used.
As a guideline for the amount of bending, as shown in FIG. 2, the vacuum heat insulating material was placed on a flat surface with the main surface in which the groove was formed facing upward, and the height H from the flat surface was measured at the end in the width direction. The height H corresponds to the amount of bending of the vacuum heat insulating material.
実施例1及び比較例1の真空断熱材について、円筒形状の施工面への施工性と、真空断熱材の曲がり量とを比較した。
施工性の目安として、図3に示すように、円筒形状の施工面に真空断熱材の一端部を取り付けた状態で、真空断熱材を施工面に巻き付け、他端部を施工面に沿わせるために必要な力Fを測定した。なお、施工面は、直径350mmの給湯器用のタンク5の外周面51を用いた。
曲がり量の目安として、図2に示すように、溝の形成された主面を上方に向けて、真空断熱材を平面に置き、幅方向の端について平面からの高さHを測定した。なお、高さHは、真空断熱材の曲がり量に対応する。 (Comparison method)
Regarding the vacuum heat insulating materials of Example 1 and Comparative Example 1, the workability on the cylindrical construction surface and the bending amount of the vacuum heat insulating material were compared.
As a guideline for workability, as shown in FIG. 3, the vacuum heat insulating material is wound around the construction surface with one end of the vacuum heat insulating material attached to the cylindrical construction surface, and the other end is aligned with the construction surface. The force F required for the was measured. As the construction surface, the outer
As a guideline for the amount of bending, as shown in FIG. 2, the vacuum heat insulating material was placed on a flat surface with the main surface in which the groove was formed facing upward, and the height H from the flat surface was measured at the end in the width direction. The height H corresponds to the amount of bending of the vacuum heat insulating material.
その結果、実施例1の真空断熱材は、端部12及び端部13の曲率が、中央部11の曲率より大きいものであった。
そして、実施例1において施工面に沿わせるために必要な力Fは43Nであり、平面からの高さHは25mmであった。
比較例1において施工面に沿わせるために必要な力Fは60Nであり、平面からの高さHは32mmであった。 As a result, in the vacuum heat insulating material of Example 1, the curvature of theend portion 12 and the end portion 13 was larger than the curvature of the central portion 11.
Then, in Example 1, the force F required to follow the construction surface was 43N, and the height H from the plane was 25 mm.
In Comparative Example 1, the force F required to follow the construction surface was 60 N, and the height H from the plane was 32 mm.
そして、実施例1において施工面に沿わせるために必要な力Fは43Nであり、平面からの高さHは25mmであった。
比較例1において施工面に沿わせるために必要な力Fは60Nであり、平面からの高さHは32mmであった。 As a result, in the vacuum heat insulating material of Example 1, the curvature of the
Then, in Example 1, the force F required to follow the construction surface was 43N, and the height H from the plane was 25 mm.
In Comparative Example 1, the force F required to follow the construction surface was 60 N, and the height H from the plane was 32 mm.
この数値から、実施例1の真空断熱材は、比較例1のものよりも、施工時に必要となる力が少なくなることが示された。このことは、施工面に真空断熱材を隙間なく取り付けるための労力が軽減されることを示している。
そして、実施例1の真空断熱材の曲がり量が、比較例1のものよりも、小さくなることが示された。このことは、実施例1の真空断熱材は、比較例1に比べて輸送時の積載効率が良いことを示す。さらに、実施例1の真空断熱材は、比較例1のものより、振動などの影響を受け難く、輸送時における耐久性が高いことを示す。 From this numerical value, it was shown that the vacuum heat insulating material of Example 1 requires less force during construction than that of Comparative Example 1. This indicates that the labor required to attach the vacuum heat insulating material to the construction surface without gaps is reduced.
Then, it was shown that the bending amount of the vacuum heat insulating material of Example 1 was smaller than that of Comparative Example 1. This indicates that the vacuum heat insulating material of Example 1 has better loading efficiency during transportation than that of Comparative Example 1. Further, it is shown that the vacuum heat insulating material of Example 1 is less susceptible to vibration and the like than the vacuum heat insulating material of Comparative Example 1, and has high durability during transportation.
そして、実施例1の真空断熱材の曲がり量が、比較例1のものよりも、小さくなることが示された。このことは、実施例1の真空断熱材は、比較例1に比べて輸送時の積載効率が良いことを示す。さらに、実施例1の真空断熱材は、比較例1のものより、振動などの影響を受け難く、輸送時における耐久性が高いことを示す。 From this numerical value, it was shown that the vacuum heat insulating material of Example 1 requires less force during construction than that of Comparative Example 1. This indicates that the labor required to attach the vacuum heat insulating material to the construction surface without gaps is reduced.
Then, it was shown that the bending amount of the vacuum heat insulating material of Example 1 was smaller than that of Comparative Example 1. This indicates that the vacuum heat insulating material of Example 1 has better loading efficiency during transportation than that of Comparative Example 1. Further, it is shown that the vacuum heat insulating material of Example 1 is less susceptible to vibration and the like than the vacuum heat insulating material of Comparative Example 1, and has high durability during transportation.
また、実施例1において、芯材密度による熱伝導率への影響を考慮すると、溝の深さ8mmに加工された部分の断熱性能は、加工されていない部分に比べて、65%低下すると考えられる。そして、溝の深さ3mmに加工された部分の断熱性能の低下は25%に抑えることが可能である。
このため、中央部11において溝の深さが浅く構成される実施例1の方が、比較例1より断熱性能が高いと推察される。 Further, in Example 1, considering the influence of the core material density on the thermal conductivity, it is considered that the heat insulating performance of the portion processed to the groove depth of 8 mm is 65% lower than that of the unprocessed portion. Be done. Then, the deterioration of the heat insulating performance of the portion processed to the groove depth of 3 mm can be suppressed to 25%.
Therefore, it is presumed that Example 1 in which the groove depth is shallow in thecentral portion 11 has higher heat insulating performance than Comparative Example 1.
このため、中央部11において溝の深さが浅く構成される実施例1の方が、比較例1より断熱性能が高いと推察される。 Further, in Example 1, considering the influence of the core material density on the thermal conductivity, it is considered that the heat insulating performance of the portion processed to the groove depth of 8 mm is 65% lower than that of the unprocessed portion. Be done. Then, the deterioration of the heat insulating performance of the portion processed to the groove depth of 3 mm can be suppressed to 25%.
Therefore, it is presumed that Example 1 in which the groove depth is shallow in the
以上説明したように、本実施の形態においては、平板状の芯材3と芯材3を被覆する外被材2とを備え、芯材3の幅方向Wの中央部11に第1溝21が形成され、中央部11を幅方向Wで挟む芯材3の2つの端部12及び端部13に第2溝22が形成され、芯材3が減圧密封された状態で、2つの端部12及び端部13の曲率が、中央部11の曲率よりも大きく形成される。
これによれば、真空断熱材1を円周面などの曲面に取り付ける際に、端部12及び端部13が曲面より浮きにくくなり、真空断熱材1を曲面に取り付けるための労力が低減される。また、真空断熱材1を搬送する際にも、真空断熱材1がかさばり難くい。そして、平らな台に積載した際に、振動や荷重による変形量を少なくでき、真空断熱材1が搬送時に受ける負荷を軽減することができる。また、輸送中に外被材2に加わる変形によるストレスが低減される。 As described above, in the present embodiment, theflat core material 3 and the outer cover material 2 covering the core material 3 are provided, and the first groove 21 is provided in the central portion 11 of the core material 3 in the width direction W. Is formed, and a second groove 22 is formed in the two end portions 12 and the end portion 13 of the core material 3 that sandwiches the central portion 11 in the width direction W, and the two end portions are in a state where the core material 3 is vacuum-sealed. The curvature of the 12 and the end portion 13 is formed to be larger than the curvature of the central portion 11.
According to this, when the vacuumheat insulating material 1 is attached to a curved surface such as a circumferential surface, the end portion 12 and the end portion 13 are less likely to float than the curved surface, and the labor for attaching the vacuum heat insulating material 1 to the curved surface is reduced. .. Further, when the vacuum heat insulating material 1 is transported, the vacuum heat insulating material 1 is not bulky. Then, when the vacuum heat insulating material 1 is loaded on a flat table, the amount of deformation due to vibration or load can be reduced, and the load received by the vacuum heat insulating material 1 during transportation can be reduced. In addition, stress due to deformation applied to the outer cover material 2 during transportation is reduced.
これによれば、真空断熱材1を円周面などの曲面に取り付ける際に、端部12及び端部13が曲面より浮きにくくなり、真空断熱材1を曲面に取り付けるための労力が低減される。また、真空断熱材1を搬送する際にも、真空断熱材1がかさばり難くい。そして、平らな台に積載した際に、振動や荷重による変形量を少なくでき、真空断熱材1が搬送時に受ける負荷を軽減することができる。また、輸送中に外被材2に加わる変形によるストレスが低減される。 As described above, in the present embodiment, the
According to this, when the vacuum
また、本実施形態においては、第1溝21の深さD1より第2溝22の深さD2が深く形成される。
これによれば、端部12及び端部13が曲がりやすくなり、端部12及び端部13の曲率を中央部11の曲率より大きくすることができる。そして、容易に端部12及び端部13の曲率を大きくすることができる。さらに、中央部11において真空断熱材1の厚みが低減しにくく、真空断熱材1の曲面への装着性を向上させながら断熱性能を確保することができる。 Further, in the present embodiment, the depth D2 of thesecond groove 22 is formed deeper than the depth D1 of the first groove 21.
According to this, theend portion 12 and the end portion 13 are easily bent, and the curvature of the end portion 12 and the end portion 13 can be made larger than the curvature of the central portion 11. Then, the curvatures of the end portion 12 and the end portion 13 can be easily increased. Further, the thickness of the vacuum heat insulating material 1 is difficult to reduce in the central portion 11, and the heat insulating performance can be ensured while improving the mountability of the vacuum heat insulating material 1 on the curved surface.
これによれば、端部12及び端部13が曲がりやすくなり、端部12及び端部13の曲率を中央部11の曲率より大きくすることができる。そして、容易に端部12及び端部13の曲率を大きくすることができる。さらに、中央部11において真空断熱材1の厚みが低減しにくく、真空断熱材1の曲面への装着性を向上させながら断熱性能を確保することができる。 Further, in the present embodiment, the depth D2 of the
According to this, the
また、本実施形態においては、第1溝21間のピッチP1より、第2溝22間のピッチP2が狭い。
これによれば、中央部11よりも端部12及び端部13は屈曲しやすくなり、端部12及び端部13の曲率を大きくすることができる。 Further, in the present embodiment, the pitch P2 between thesecond grooves 22 is narrower than the pitch P1 between the first grooves 21.
According to this, theend portion 12 and the end portion 13 are more easily bent than the central portion 11, and the curvature of the end portion 12 and the end portion 13 can be increased.
これによれば、中央部11よりも端部12及び端部13は屈曲しやすくなり、端部12及び端部13の曲率を大きくすることができる。 Further, in the present embodiment, the pitch P2 between the
According to this, the
本実施形態においては、第1溝21の幅W1より第2溝22の幅W2が広く形成される。
これによれば、端部12及び端部13が屈曲しやすくなり、端部12及び端部13の曲率を大きくすることができる。そして、中央部11において真空断熱材1の厚みが低減しにくく、真空断熱材1の曲面への装着性を向上させるとともに断熱性能を確保することができる。 In the present embodiment, the width W2 of thesecond groove 22 is formed wider than the width W1 of the first groove 21.
According to this, theend portion 12 and the end portion 13 are easily bent, and the curvature of the end portion 12 and the end portion 13 can be increased. Then, it is difficult to reduce the thickness of the vacuum heat insulating material 1 at the central portion 11, and it is possible to improve the mountability of the vacuum heat insulating material 1 on the curved surface and secure the heat insulating performance.
これによれば、端部12及び端部13が屈曲しやすくなり、端部12及び端部13の曲率を大きくすることができる。そして、中央部11において真空断熱材1の厚みが低減しにくく、真空断熱材1の曲面への装着性を向上させるとともに断熱性能を確保することができる。 In the present embodiment, the width W2 of the
According to this, the
本実施形態においては、幅方向Wの単位長さ当たりに形成される本数は、第1溝21より第2溝22が多い。
これによれば、容易に端部12及び端部13を屈曲しやすくすることができる。そして、端部12及び端部13の曲率を大きくすることができる。 In the present embodiment, the number of lines formed per unit length in the width direction W is larger in thesecond groove 22 than in the first groove 21.
According to this, theend portion 12 and the end portion 13 can be easily bent. Then, the curvatures of the end portion 12 and the end portion 13 can be increased.
これによれば、容易に端部12及び端部13を屈曲しやすくすることができる。そして、端部12及び端部13の曲率を大きくすることができる。 In the present embodiment, the number of lines formed per unit length in the width direction W is larger in the
According to this, the
本実施形態においては、芯材3の中央部11に水分吸着剤4を配置する。
これによれば、真空断熱材1内の水分を効率的に水分吸着剤4に吸着させることができる。また、水分吸着剤4を端部12及び端部13の曲率に影響を与え難い位置に配置することができる。 In the present embodiment, thewater adsorbent 4 is arranged at the central portion 11 of the core material 3.
According to this, the moisture in the vacuumheat insulating material 1 can be efficiently adsorbed on the moisture adsorbent 4. Further, the water adsorbent 4 can be arranged at a position that does not easily affect the curvature of the end portion 12 and the end portion 13.
これによれば、真空断熱材1内の水分を効率的に水分吸着剤4に吸着させることができる。また、水分吸着剤4を端部12及び端部13の曲率に影響を与え難い位置に配置することができる。 In the present embodiment, the
According to this, the moisture in the vacuum
本実施形態においては、真空断熱材1を取り付けた容器であるタンク5を内装する断熱箱体6が構成される。
これによれば、断熱箱体6の製作時に、タンク5への真空断熱材1の取り付けを容易にすることができる。また、タンク5と真空断熱材1との隙間を低減することができるので、断熱効率の高い断熱箱体6を製作することができる。 In the present embodiment, theheat insulating box 6 containing the tank 5 which is a container to which the vacuum heat insulating material 1 is attached is configured.
According to this, it is possible to easily attach the vacuumheat insulating material 1 to the tank 5 at the time of manufacturing the heat insulating box body 6. Further, since the gap between the tank 5 and the vacuum heat insulating material 1 can be reduced, the heat insulating box body 6 having high heat insulating efficiency can be manufactured.
これによれば、断熱箱体6の製作時に、タンク5への真空断熱材1の取り付けを容易にすることができる。また、タンク5と真空断熱材1との隙間を低減することができるので、断熱効率の高い断熱箱体6を製作することができる。 In the present embodiment, the
According to this, it is possible to easily attach the vacuum
なお、本実施の形態は本発明を適用した一態様を示すものであって、本発明は前記実施の形態に限定されない。
例えば、本実施の形態では、第1溝21及び第2溝22の断面形状が、V字形状である場合について説明したが、第1溝21及び第2溝22の断面形状は、上述のV字形状に限定されるものではない。第1溝21及び第2溝22の断面形状は、真空断熱材1を曲げやすくする形状であればよく、U字形状や、矩形形状としても良い。また、第1溝21と第2溝22の断面形状を異なるものとしてもよく、中央部11において第1溝21を省略しても良い。 It should be noted that the present embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the above-described embodiment.
For example, in the present embodiment, the case where the cross-sectional shapes of thefirst groove 21 and the second groove 22 are V-shaped has been described, but the cross-sectional shapes of the first groove 21 and the second groove 22 are the above-mentioned V. It is not limited to the character shape. The cross-sectional shape of the first groove 21 and the second groove 22 may be a shape that makes the vacuum heat insulating material 1 easy to bend, and may be a U shape or a rectangular shape. Further, the cross-sectional shapes of the first groove 21 and the second groove 22 may be different, and the first groove 21 may be omitted in the central portion 11.
例えば、本実施の形態では、第1溝21及び第2溝22の断面形状が、V字形状である場合について説明したが、第1溝21及び第2溝22の断面形状は、上述のV字形状に限定されるものではない。第1溝21及び第2溝22の断面形状は、真空断熱材1を曲げやすくする形状であればよく、U字形状や、矩形形状としても良い。また、第1溝21と第2溝22の断面形状を異なるものとしてもよく、中央部11において第1溝21を省略しても良い。 It should be noted that the present embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the above-described embodiment.
For example, in the present embodiment, the case where the cross-sectional shapes of the
さらに、第1溝21及び第2溝22の形成は、金型等による真空断熱材1もしくは、芯材3のプレス加工に限定されない。あらかじめ、芯材3において第1溝21及び第2溝22を形成する部分を取り除いても良い。また、第1溝21及び第2溝22を形成する部分の芯材3の密度を低くしたり、第1溝21及び第2溝22が形成される部分以外の芯材3の密度を高くしたりしても良い。
Further, the formation of the first groove 21 and the second groove 22 is not limited to the press working of the vacuum heat insulating material 1 or the core material 3 by a mold or the like. The portion of the core material 3 that forms the first groove 21 and the second groove 22 may be removed in advance. Further, the density of the core material 3 in the portion forming the first groove 21 and the second groove 22 is lowered, or the density of the core material 3 other than the portion in which the first groove 21 and the second groove 22 are formed is increased. You may do it.
また、真空断熱材1が装着される曲面に応じて、第1溝21の深さD2、幅W2に対して、第2溝22の深さD2、もしくは幅W2の一方のみを大きくしても良い。そして、第1溝21と第2溝22を同じ深さと幅に形成して、第1溝21間のピッチP1を、第2溝22間のピッチP2よりも広く構成してもよい。さらに、これらを組み合わせて、端部12及び端部13の曲率を中央部11の曲率より大きくしても良い。
Further, depending on the curved surface on which the vacuum heat insulating material 1 is mounted, even if only one of the depth D2 or the width W2 of the second groove 22 is increased with respect to the depth D2 and the width W2 of the first groove 21. good. Then, the first groove 21 and the second groove 22 may be formed to have the same depth and width so that the pitch P1 between the first grooves 21 is wider than the pitch P2 between the second grooves 22. Further, these may be combined to make the curvature of the end portion 12 and the end portion 13 larger than the curvature of the central portion 11.
さらに、第1溝21及び第2溝22は、真空断熱材1を湾曲させるものであれば良く、長さ方向Dに対して傾斜させて形成したり、破線状に形成したり、ジグザグに形成しても良い。
Further, the first groove 21 and the second groove 22 may be formed as long as the vacuum heat insulating material 1 is curved, and may be formed so as to be inclined with respect to the length direction D, may be formed in a broken line shape, or may be formed in a zigzag shape. You may.
以上のように、本発明に係る真空断熱材は、曲面に装着される断熱材として好適に利用可能である。
As described above, the vacuum heat insulating material according to the present invention can be suitably used as a heat insulating material mounted on a curved surface.
1 真空断熱材
2 外被材
3 芯材
5 タンク(容器)
6 断熱箱体
10 主面
11 中央部
12 端部
13 端部
21 第1溝
22 第2溝
D1 深さ(第1溝)
D2 深さ(第2溝)
P1 ピッチ(第1溝)
P2 ピッチ(第2溝)
W1 幅(第1溝)
W2 幅(第2溝) 1 Vacuumheat insulating material 2 Outer cover material 3 Core material 5 Tank (container)
6Insulated box 10 Main surface 11 Central part 12 End part 13 End part 21 1st groove 22 2nd groove D1 Depth (1st groove)
D2 depth (second groove)
P1 pitch (1st groove)
P2 pitch (second groove)
W1 width (1st groove)
W2 width (second groove)
2 外被材
3 芯材
5 タンク(容器)
6 断熱箱体
10 主面
11 中央部
12 端部
13 端部
21 第1溝
22 第2溝
D1 深さ(第1溝)
D2 深さ(第2溝)
P1 ピッチ(第1溝)
P2 ピッチ(第2溝)
W1 幅(第1溝)
W2 幅(第2溝) 1 Vacuum
6
D2 depth (second groove)
P1 pitch (1st groove)
P2 pitch (second groove)
W1 width (1st groove)
W2 width (second groove)
Claims (7)
- 平板状の芯材と前記芯材を被覆する外被材とを備え、
幅方向の中央部の前記芯材に第1溝が形成され、
前記中央部を前記幅方向で挟む前記芯材の2つの端部に第2溝が形成され、
減圧密封された状態で、前記芯材の変形は、
前記2つの端部の曲率が、前記中央部の曲率よりも大きく形成される
ことを特徴とする真空断熱材。 A flat core material and an outer cover material that covers the core material are provided.
A first groove is formed in the core material at the center in the width direction.
Second grooves are formed at the two ends of the core material that sandwiches the central portion in the width direction.
In the state of being sealed under reduced pressure, the deformation of the core material is
A vacuum heat insulating material characterized in that the curvature of the two end portions is formed larger than the curvature of the central portion. - 前記第1溝の深さより前記第2溝の深さが深く形成される
ことを特徴とする請求項1に記載の真空断熱材。 The vacuum heat insulating material according to claim 1, wherein the depth of the second groove is formed deeper than the depth of the first groove. - 前記第1溝のピッチより、前記第2溝のピッチが狭い
ことを特徴とする請求項1又は2に記載の真空断熱材。 The vacuum heat insulating material according to claim 1 or 2, wherein the pitch of the second groove is narrower than the pitch of the first groove. - 前記第1溝の幅より前記第2溝の幅が広く形成される
ことを特徴とする請求項1乃至3のいずれか一項に記載の真空断熱材。 The vacuum heat insulating material according to any one of claims 1 to 3, wherein the width of the second groove is formed wider than the width of the first groove. - 前記幅方向の単位長さ当たりに形成される本数は、前記第1溝より前記第2溝が多い
ことを特徴とする請求項1乃至4のいずれか一項に記載の真空断熱材。 The vacuum heat insulating material according to any one of claims 1 to 4, wherein the number of the vacuum heat insulating material formed per unit length in the width direction is larger than that of the first groove. - 前記芯材の前記中央部に水分吸着剤を配置する
ことを特徴とする請求項1乃至5のいずれか一項に記載の真空断熱材。 The vacuum heat insulating material according to any one of claims 1 to 5, wherein the moisture adsorbent is arranged in the central portion of the core material. - 請求項1乃至6に記載の真空断熱材を取り付けた容器を内装することを特徴とする真空断熱材を用いた断熱箱体。 A heat insulating box body using the vacuum heat insulating material, which comprises incorporating the container to which the vacuum heat insulating material according to claims 1 to 6 is attached.
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Citations (2)
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JP2006316872A (en) * | 2005-05-12 | 2006-11-24 | Matsushita Electric Ind Co Ltd | Vacuum heat insulating material and heat retaining equipment adopting the same |
CN203641772U (en) * | 2013-12-27 | 2014-06-11 | 常州山由帝武节能新材料制造有限公司 | Roll-type vacuum insulated panel |
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FR2262769A1 (en) * | 1974-03-01 | 1975-09-26 | Strulik Wilhelm | Insulating air conditioning duct - formed from incombustible sheet grooved to permit bending, has external seal and internal protection |
DE19941746A1 (en) * | 1999-09-02 | 2001-03-08 | Porextherm Daemmstoffe Gmbh | Insulation molded body and process for its production |
IT1318095B1 (en) * | 2000-06-30 | 2003-07-23 | Feltri Marone S P A | MACHINE FOR THE MANUFACTURE OF CORRUGATED CARDBOARD. |
CN201406804Y (en) * | 2009-05-12 | 2010-02-17 | 安徽省根源光大节能建材有限公司 | Thermal protection and insulation decorative board suitable for round mounting surface |
CN203641773U (en) * | 2013-12-27 | 2014-06-11 | 常州山由帝武节能新材料制造有限公司 | Coiled vacuum insulation panel |
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JP2006316872A (en) * | 2005-05-12 | 2006-11-24 | Matsushita Electric Ind Co Ltd | Vacuum heat insulating material and heat retaining equipment adopting the same |
CN203641772U (en) * | 2013-12-27 | 2014-06-11 | 常州山由帝武节能新材料制造有限公司 | Roll-type vacuum insulated panel |
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