WO2023195156A1 - Hot water storage tank - Google Patents

Hot water storage tank Download PDF

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Publication number
WO2023195156A1
WO2023195156A1 PCT/JP2022/017360 JP2022017360W WO2023195156A1 WO 2023195156 A1 WO2023195156 A1 WO 2023195156A1 JP 2022017360 W JP2022017360 W JP 2022017360W WO 2023195156 A1 WO2023195156 A1 WO 2023195156A1
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WO
WIPO (PCT)
Prior art keywords
heat insulating
tape
insulating material
hot water
tank body
Prior art date
Application number
PCT/JP2022/017360
Other languages
French (fr)
Japanese (ja)
Inventor
有理子 西村
俊圭 鈴木
航太 安藤
修平 内藤
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/017360 priority Critical patent/WO2023195156A1/en
Publication of WO2023195156A1 publication Critical patent/WO2023195156A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present disclosure relates to a hot water storage tank equipped with a heat insulating material.
  • Patent Document 1 discloses a configuration that suppresses heat radiation from the tank body when a plurality of heat insulating materials are used.
  • the hot water storage tank of Patent Document 1 includes a heat insulating material divided into at least three parts: an upper part, a side part, and a lower part.
  • the upper and lower insulation materials are molded insulation materials, and the side insulation materials are vacuum insulation materials.
  • the thickness of the portion of the upper heat insulating material or the lower heat insulating material that substantially contacts the side heat insulating material is approximately the same as the thickness of the side heat insulating material.
  • the upper heat insulating material or the lower heat insulating material is fixed to a thermally welded portion formed on the outer periphery of the side heat insulating material with an adhesive tape. Such a configuration improves the adhesion between the plurality of heat insulating materials and suppresses the occurrence of gaps.
  • the insulation material fixed with tape may be The surface moves out of its proper position.
  • gaps or steps may occur between the heat insulating materials, and the tape to be applied may be wrinkled or tilted. If wrinkles in the tape extend from the gaps in the insulation material to the ends of the tape, or if the tape is not able to completely cover the gaps between the insulation materials due to the inclination of the tape, convection may occur from the surface of the tank body to the outside of the insulation material. Otherwise, the tank body may radiate heat.
  • the present disclosure solves the above problems and provides a hot water storage tank that suppresses heat radiation from the tank body even when there are variations in the dimensions of the heat insulating material and the tank body.
  • a hot water storage tank includes a tank body that stores liquid, a plurality of heat insulators that cover the tank body, and a tape that covers gaps between adjacent heat insulators among the plurality of heat insulators, The tape is pasted so as to overlap the edges of adjacent insulation materials, and in the long side direction of the tape, one of the adjacent insulation materials and the tape are in continuous and close contact with the other side of the adjacent insulation materials. There is.
  • the tape covering the gap between adjacent insulating materials is attached so as to overlap the edges of the adjacent insulating materials, and in the long side direction of the tape, the tape covers the gap between adjacent insulating materials.
  • the tape and the other adjacent heat insulating material are in continuous and close contact with each other. Therefore, even if there are dimensional variations in the heat insulating material and the tank body, heat radiation from the tank body can be suppressed.
  • FIG. 1 is a schematic diagram of a hot water storage tank according to Embodiment 1.
  • FIG. 1 is a schematic cross-sectional view of a hot water storage tank according to Embodiment 1.
  • FIG. FIG. 2 is a diagram showing a hot water storage tank and piping connected to the hot water storage tank according to the first embodiment.
  • FIG. 3 is a schematic diagram showing a state in which a tape is attached according to Embodiment 1.
  • FIG. FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 2;
  • FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 3;
  • FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 4;
  • FIG. 7 is a schematic diagram of a hot water storage tank according to Embodiment 6.
  • FIG. 7 is a schematic diagram of a hot water storage tank according to Embodiment 7.
  • FIG. 1 is a schematic diagram of a hot water storage tank 1 according to the first embodiment.
  • FIG. 2 is a schematic cross-sectional view of the hot water storage tank 1 according to the first embodiment.
  • FIG. 1 parts that cannot be visually recognized from the outside are indicated by broken lines.
  • FIG. 2 shows the hot water storage tank 1 cut along the AA cross section in FIG.
  • the hot water storage tank 1 of this embodiment is a cylindrical tank that stores liquid such as water or hot water.
  • water refers to unheated water
  • hot water refers to heated water.
  • the hot water storage tank 1 includes a tank body 2 that stores liquid, a lower insulation material 31 that covers the tank body 2, a side insulation material 32, an upper insulation material 33, and a lower insulation material 31. and a tape 4 connecting the side heat insulating material 32 and the top heat insulating material 33 to the side heat insulating material 32, respectively.
  • the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be collectively called a heat insulating material.
  • the tank body 2 has a cylindrical appearance and a hollow interior.
  • the tank body 2 has a substantially symmetrical shape with respect to the central axis C.
  • the tank body 2 consists of a bottom surface 21, side surfaces 22, and a top surface 23.
  • the bottom surface 21 corresponds to a lower hemispherical portion of the tank body 2.
  • the side surface 22 is connected to the bottom surface 21 and corresponds to a cylindrical portion that is the body of the tank body 2.
  • the top surface 23 is connected to the side surface 22 and corresponds to an upper hemispherical portion of the tank body 2.
  • a take-out port 51a and a take-out port 51b are formed on the bottom surface 21 of the tank body 2.
  • a take-out port 51c and a take-out port 51d are formed on the top surface 23 of the tank body 2.
  • FIG. 3 is a diagram showing the hot water storage tank 1 and piping connected to the hot water storage tank 1 according to the first embodiment.
  • the tank body 2 is connected to a bottom pipe 52a, a water supply pipe 52b, an upper pipe 52c, and a hot water supply pipe 52d through which water or hot water flows.
  • the inlet of the bottom pipe 52a is connected to the outlet 51a provided at the bottom of the tank body 2.
  • the outlet of the bottom pipe 52a is connected to the heating device 9.
  • the heating device 9 is a device that heats water using a heater or a heat pump.
  • the inlet of the water supply pipe 52b is connected to a supply pipe (not shown) for, for example, city water.
  • the outlet of the water supply pipe 52b is branched, one of which is connected to the outlet 51b provided at the bottom of the tank body 2, and the other connected to the hot water supply pipe 52d.
  • the inlet of the upper pipe 52c is connected to the heating device 9.
  • An outlet of the upper pipe 52c is connected to an outlet 51c provided at the upper part of the tank body 2.
  • the inlet of the hot water supply pipe 52d is connected to an outlet 51d provided at the top of the tank body 2.
  • the outlet of the hot water supply pipe 52d is connected to a user side pipe (not shown) or the like.
  • the hot water storage tank 1 stores and releases hot water in the following manner. First, water stored in the tank body 2 is sent to the heating device 9 through the bottom pipe 52a and heated. The heated water is returned to the upper part of the tank body 2 through the upper pipe 52c. When water is supplied to the tank body 2 from the outside, water is supplied to the lower part of the tank body 2 from the water supply pipe 52b.
  • the hot water stored in the tank body 2 is pushed up. Thereby, hot water is discharged to the outside from the hot water supply pipe 52d connected to the upper part of the tank body 2.
  • the hot water supplied from the hot water supply pipe 52d and the water supplied from the water supply pipe 52b are mixed to generate and supply hot water at a temperature desired by the user.
  • the tank body 2 Immediately after storing hot water, the tank body 2 is uniformly filled with hot water, but as time passes and the hot water is stored and dispensed, the upper part of the tank body 2 becomes hotter and the lower part becomes colder. A thermal boundary layer is formed. This is because the specific gravity of water changes depending on the temperature, and high temperature water has a lighter specific gravity.
  • the tank body 2 is covered with three heat insulating materials: a lower heat insulating material 31, a side heat insulating material 32, and an upper heat insulating material 33.
  • the lower insulation material 31, the side insulation material 32, and the upper insulation material 33 provide insulation between the tank body 2 and the surrounding air.
  • the lower heat insulating material 31 has a hollow, substantially hemispherical shape.
  • the lower heat insulating material 31 covers the bottom surface 21 of the tank body 2.
  • the lower heat insulating material 31 is attached in close contact with the bottom surface 21 of the tank body 2.
  • the lower heat insulating material 31 may cover a portion below the center of the side surface 22. In this case, the lower heat insulating material 31 is attached in close contact with a portion of the bottom surface 21 and side surfaces 22 of the tank body 2.
  • the lower heat insulating material 31 has insertion holes 53a and 53b formed therein.
  • the insertion hole 53a is a hole that communicates with the outlet 51a and through which the bottom pipe 52a is inserted.
  • the insertion hole 53b communicates with the outlet 51b and is a hole through which the water supply pipe 52b is inserted.
  • the side heat insulating material 32 has a hollow, substantially cylindrical shape.
  • the side insulation material 32 covers the side surface 22 of the tank body 2.
  • the side heat insulating material 32 is attached in close contact with the side surface 22 of the tank body 2.
  • the side heat insulating material 32 may cover the entire side surface 22 of the tank body 2, or may cover the entire side surface 22 of the tank body 2, or may cover the side surface 22 above the portion covered by the lower heat insulating material 31 and above the portion covered by the top heat insulating material 33. It may also cover the lower part.
  • the upper heat insulating material 33 has a hollow, substantially hemispherical shape.
  • the upper heat insulating material 33 covers the top surface 23 of the tank body 2.
  • the upper heat insulating material 33 is attached in close contact with the top surface 23 of the tank body 2.
  • the upper heat insulating material 33 may cover a portion above the center of the side surface 22. In this case, the upper heat insulating material 33 is attached in close contact with a portion of the top surface 23 and side surfaces 22 of the tank body 2.
  • Insertion holes 53c and 53d are formed in the upper heat insulating material 33.
  • the insertion hole 53c communicates with the outlet 51c and is a hole through which the upper pipe 52c is inserted.
  • the insertion hole 53d communicates with the outlet 51d and is a hole through which the hot water supply pipe 52d is inserted.
  • the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 are foamed heat insulating materials made of foamed polystyrene, for example.
  • the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be made of the same material, or may be made of different materials.
  • the thermal conductivity of the upper insulating material among the vertically adjacent insulating materials is the same as that of the insulating material located on the lower side.
  • the thermal conductivity of the insulation material used should be lower than that of the insulation material used. In other words, among the vertically adjacent heat insulating materials, the heat insulating performance of the heat insulating material arranged on the upper side is made higher than the heat insulating performance of the heat insulating material arranged on the lower side.
  • the thermal conductivity of the side heat insulating material 32 and the top heat insulating material 33 is made smaller than that of the lower heat insulating material 31.
  • the thermal conductivity of the upper insulating material 33 is made smaller than that of the lower insulating material 31 and the side insulating material 32.
  • the thermal conductivity of the side insulation material 32 is made lower than that of the lower insulation material 31, and the thermal conductivity of the upper insulation material 33 is made lower than that of the side insulation material 32. Due to the temperature dependence of water density, the higher temperature water in the tank body 2 moves to the upper part by convection, so by reducing the thermal conductivity of the insulation material placed on the upper side, The top can be properly insulated.
  • the upper end surface 312 of the lower insulation material 31, the lower end surface 321 and the upper end surface 322 of the side insulation material 32, and the lower end surface 331 of the upper insulation material 33 are formed substantially horizontally over the entire circumference. ing.
  • the lower heat insulating material 31 is vertically adjacent to the side heat insulating material 32 , and the upper end surface 312 of the lower heat insulating material 31 faces the lower end surface 321 of the side heat insulating material 32 .
  • the upper heat insulating material 33 is vertically adjacent to the side heat insulating material 32 , and the lower end surface 331 of the upper heat insulating material 33 faces the upper end surface 322 of the side heat insulating material 32 .
  • the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 have substantially the same thickness at least in adjacent portions.
  • the dimensions are designed so that the lower end surface 321 of the side insulation material 32 is in contact with the upper end surface 312 of the lower insulation material 31, and the upper end surface 322 of the side insulation material 32 is in contact with the lower end surface 331 of the upper insulation material 33. has been done.
  • a gap G will occur between two adjacent heat insulators. In the case of this embodiment, between the lower end surface 321 of the side insulation material 32 and the upper end surface 312 of the lower insulation material 31, or between the lower end surface 331 of the upper insulation material 33 and the upper end surface 322 of the side insulation material 32. A gap G occurs between them.
  • FIG. 4 is a schematic diagram showing how the tape 4 is attached according to the first embodiment.
  • the tape 4 of this embodiment covers the gap G between the heat insulating materials.
  • the gap G between the lower heat insulating material 31 and the side heat insulating material 32 is covered with the tape 4.
  • the gap G between the upper heat insulating material 33 and the side heat insulating material 32 is also covered with the tape 4 similarly to the gap G between the lower heat insulating material 31 and the side heat insulating material 32 shown in FIG.
  • the tape 4 consists of a base material made of vinyl and an adhesive layer provided on the entire surface of the base material.
  • the base material is a sheet or film, and the adhesive layer is made of a viscous adhesive.
  • the gap G between the heat insulating materials is formed by extending linearly around the outside of the tank body 2 in the circumferential direction.
  • the tape 4 extends parallel to the gap G whose long sides extend in the circumferential direction, and is attached to the adjacent heat insulating material.
  • the direction parallel to the short side of the tape 4 is defined as the short side direction, and in the case of FIGS. 1, 2, and 4, the short side direction is the vertical direction when the hot water storage tank 1 is installed.
  • the direction parallel to the long side of the tape 4 is defined as the long side direction, and in the case of FIGS. 1, 2, and 4, the long side direction of the tape 4 is the circumferential direction of the tank body 2.
  • the tape 4 is attached to the ends of two adjacent heat insulating materials among the plurality of heat insulating materials so as to overlap each other.
  • the two adjacent heat insulating materials are the lower heat insulating material 31 and the side heat insulating material 32, and the upper heat insulating material 33 and the side heat insulating material 32.
  • the tape 4 covering the gap G between the lower insulation material 31 and the side insulation material 32 is pasted so as to overlap the upper end of the lower insulation material 31 and the lower end of the side insulation material 32. .
  • the tape 4 covering the gap G between the upper heat insulating material 33 and the side heat insulating material 32 is attached so as to overlap the upper end of the side heat insulating material 32 and the lower end of the upper heat insulating material 33.
  • the tape 4 connects the lower insulation material 31 and the side insulation material 32, and the upper insulation material 33 and the side insulation material 32, respectively.
  • a step also occurs between two adjacent heat insulating materials.
  • wrinkles occur in the tape 4 due to the difference in level between the heat insulating materials.
  • the wrinkles of the tape 4 reach from the gap G to the end of the tape 4 in the short side direction, convection will occur from the surface of the tank body 2 to the outside of the heat insulating material through the gap G and the wrinkles. Therefore, in the tape 4 of the present embodiment, one of the adjacent heat insulating materials and the tape 4 are in continuous contact with each other, and the tape 4 and the other heat insulating material are in continuous contact with each other in the long side direction.
  • the tape 4 is pasted so that the non-adhesion region R2 shown in FIG. .
  • the width of the tape 4 in the short side direction is set to be at least three times the width of the gap G when dimensional variations within the tolerance range occur.
  • the gap G between adjacent heat insulating materials is covered with the tape 4, and within the width of the tape 4 in the short side direction, one of the adjacent heat insulating materials is covered in parallel with the gap G.
  • the material and the tape 4, and the other heat insulating material and the tape 4 are continuously brought into close contact with each other.
  • generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • parallel to the gap G includes not only the case of being strictly parallel to the gap G but also the case of being substantially parallel to the gap G.
  • FIG. 5 is a schematic diagram showing a state in which the tape 4A according to the second embodiment is attached.
  • the second embodiment differs from the first embodiment in the material of the tape 4A.
  • the rest of the configuration of the hot water storage tank 1 in the second embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly described below.
  • the tape 4A of this embodiment is made of a flexible material or is thin.
  • the base material of the tape 4A is made of a flexible material or the thickness of the base material is made thin so that the adhesive strength is stronger than the bending stress of the base material when the tape 4A is bent.
  • Shore A hardness when flexibility is indicated by Shore A hardness, the Shore A hardness of the base material of tape 4A is within the range of 50 to 100.
  • the material of the base material of the tape 4A polyolefin (PO), polyethylene (PE), flexible vinyl chloride (PVC), Damplon (OPP), polyester (PET), polyimide (PI), or cellophane is used.
  • the thickness of the tape 4A is approximately 0.2 mm or less.
  • the tape 4A By making the tape 4A flexible, even if the tape 4A is partially lifted from the insulation material due to wrinkles caused by the step between the insulation materials, the operator can push out the air inside the wrinkles to remove the lifted tape 4A. can be attached to the insulation material. Further, the tapes 4A can be partially attached to each other in a mountain-fold manner without any gaps. As a result, as shown in FIG. 5, it is possible to eliminate wrinkles in the tape 4A, reduce the non-adhesion region R2, and enlarge the adhesion region R1.
  • the operator can Wrinkles can be easily removed with your nails.
  • one of the adjacent heat insulating materials and the tape 4A, and the other heat insulating material and the tape 4A can be brought into continuous contact with each other.
  • generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • the wrinkles of the tape 4A can be eliminated to form the close contact region R1, the width of the tape 4A in the short side direction can be made smaller than in the first embodiment.
  • FIG. 6 is a schematic diagram showing a state in which the tape 4B according to the third embodiment is attached.
  • Embodiment 3 differs from Embodiment 1 in the configuration of tape 4B.
  • the rest of the configuration of the hot water storage tank 1 in the third embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly explained.
  • the adhesive layer 41 of the tape 4B of this embodiment is provided only at both ends in the short side direction. In other words, the adhesive layer 41 is not provided at the center of the tape 4B in the short side direction, that is, at the portion facing the gap G.
  • the width of each adhesive layer 41 of the tape 4B is, for example, 1/3 or less of the width of the tape 4A in the short side direction.
  • the adhesive layer 41 is not provided.
  • the tape 4B provided with the adhesive layer 41 can be brought into close contact with the heat insulating material without forming wrinkles at both ends in the short side direction.
  • generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • FIG. 7 is a schematic diagram showing a state in which the tape 4C according to the fourth embodiment is attached.
  • Embodiment 4 differs from Embodiment 1 in the material of tape 4C.
  • the rest of the configuration of the hot water storage tank 1 in the fourth embodiment is the same as in the first embodiment, and the explanation will focus on the differences from the first embodiment.
  • the tape 4C of the third embodiment is made of a stretchable material.
  • a material having an "elongation" of 100% or more according to the JIS Z2037 test standard is used as the tape 4C.
  • polyolefin (PO), polyethylene (PE), vinyl chloride (PVC), Danprone (OPP), or the like is used as a material having extensibility for the tape 4C.
  • the tape 4C By composing the tape 4C with a stretchable material, even if the tape 4C wrinkles due to a step between the insulation materials caused by dimensional variations and the tape 4C is partially lifted from the insulation material, the tape 4C It is possible to partially extend the material to follow the step and make it fit closely. Thereby, the tape 4C and the outer circumferential surface of the heat insulating material (in the case of FIG. 7, the lower heat insulating material 31 and the side heat insulating material 32) can be brought into close contact. Further, in this embodiment, as shown in FIG. 7, the non-adhesive region R2 can be made only in the gap G, and the entire pasted part of the tape 4C with the heat insulating material can be the adhesion region R1.
  • the tape 4C it is possible to partially extend the material to follow the step and make it fit closely. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • Embodiment 5 will be described.
  • the fifth embodiment differs from the first embodiment in the material of the tape 4.
  • the rest of the configuration of the hot water storage tank 1 in the fifth embodiment is the same as that in the first embodiment, and the explanation will focus on the differences from the first embodiment.
  • the tape 4 of this embodiment is made of a heat-shrinkable material such as a heat-shrinkable film.
  • the upper end of the tape 4 in the short side direction is fixed so as to cover the lower end of the upper insulating material 33, and the lower end of the tape 4 in the short side direction is fixed to the side insulating material 32. Fix it so that it covers the top edge.
  • the tape 4 contracts due to the heat of the hot water in the tank body 2, and the surface of the heat insulating material covered by the tape 4 is It follows the shape and adheres closely.
  • the state of application of the tape 4 at the time of pasting is the same as the state of application of the tape 4B shown in FIG. 6, and the state of application of the tape 4 after heat shrinkage is the same as the state of application of the tape 4C shown in FIG. .
  • the tape 4 can be made to follow the step and adhere tightly by thermal contraction. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • FIG. 8 is a schematic diagram of a hot water storage tank 1A according to the sixth embodiment.
  • Embodiment 6 differs from Embodiment 1 in the method of applying tape 4.
  • the rest of the configuration of the hot water storage tank 1A in the sixth embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly explained.
  • the tape 4 of this embodiment has an overlapping region R3 that is pasted overlappingly.
  • the overlapping region R3 is formed by shifting the start position P1 and the end position P2 of pasting the tape 4 in the long side direction.
  • the overlapping region R3 is provided to cover a portion where the difference in level between the heat insulating materials is large.
  • a fitting part 30 having an uneven shape for fitting is formed at the lower end of the upper insulating material 33 and the upper end of the side insulating material 32, and the fitting part 30 is formed by the overlapping region R3 of the tape 4. Covered.
  • the tape 4 sets the position in front of the fitting part 30 as the starting position P1, and the pasting is started from the starting position P1. Then, the tape 4 covers the fitting part 30 and is wound in the circumferential direction parallel to the gap G, and again covers the fitting part 30, and the pasting is completed at the end position P2.
  • the overlapping region R3 is not limited to one formed by overlapping the start and end portions of one tape 4. For example, after covering the gap G around the entire circumference of the tank body 2 with the tape 4, the cut tape 4 may be pasted over the fitting portion 30 to form the overlapping region R3.
  • the tapes 4 are overlapped and pasted to cover the generated wrinkles with the overlapped tape 4. be able to.
  • one of the adjacent heat insulating materials and the tape 4 and the other heat insulating material and the tape 4 can be brought into continuous and close contact with each other.
  • generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • FIG. 9 is a schematic diagram of a hot water storage tank 1B according to the seventh embodiment.
  • Embodiment 7 differs from Embodiment 6 in the structure of the heat insulating material.
  • the rest of the configuration of the hot water storage tank 1B in the seventh embodiment is the same as that in the sixth embodiment, and the differences from the sixth embodiment will be mainly described.
  • the upper heat insulating material 33 of this embodiment has a guide portion 35 that indicates the position where the tape 4 is attached.
  • the guide portion 35 is formed by a minute recess or protrusion.
  • a guide portion 35 consisting of a plurality of rectangular convex portions parallel to the long side direction of the tape 4 is located between the start position P1 in front of the fitting portion 30 of the upper heat insulating material 33 and the end position P2. is formed. The operator starts pasting the tape 4 by aligning the upper end of the tape 4 in the short side direction with the guide part 35, wraps around the outer circumference of the tank body 2, and continues pasting the tape 4 until it reaches the end position P2 indicated by the guide part 35.
  • the tape 4 can be easily attached to an appropriate position while providing the overlapping region R3 that covers the fitting part 30. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
  • the configuration of the guide portion 35 is not limited to the example shown in FIG. 9.
  • the guide portions 35 may be arranged continuously in the circumferential direction, or a plurality of guide portions 35 may be arranged intermittently in the circumferential direction.
  • the guide portion 35 is not limited to being formed by a concave portion or a convex portion, and may be formed by printing or the like.
  • the upper heat insulating material 33 is configured to include the guide portion 35, but either one or both of the two adjacent heat insulating materials may be provided with the guide portion 35.
  • the guide portion 35 is arranged outside the tape 4 application position, but the guide portion 35 may be arranged inside the tape 4 application position. Furthermore, a part of the fitting part 30 may be used as the guide part 35. In this case, the line at the upper end of the fitting part 30 is used as the guide part 35, and the tape 4 is pasted with the line and the upper end of the tape 4 in the short side direction aligned.
  • any of the tapes 4, 4A to 4C of the first to fifth embodiments may be used.
  • the guide portion 35 of Embodiment 7 may be provided.
  • foamed polystyrene is used as the material of the heat insulating material
  • foams made of foamed polypropylene, foamed urethane, polyethylene, rubber, polymer, etc. may also be used.
  • the plurality of heat insulating materials that cover the tank body 2 are not limited to the three, the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33.
  • at least one of the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be further divided in the vertical direction, the front-back direction, or the left-right direction. This improves assembly, storage, and yield.
  • the plurality of heat insulating materials that cover the tank body 2 may be two, the lower heat insulating material 31 and the upper heat insulating material 33.
  • the plurality of heat insulating materials covering the tank body 2 may be two: a front heat insulating material covering the front half of the hot water storage tank 1 and a rear heat insulating material covering the rear half of the hot water storage tank 1.
  • the tape 4 is not limited to being attached along the circumferential direction of the tank body 2, but may be attached vertically or diagonally in order to cover the gap G between the heat insulating materials.

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Abstract

A hot water storage tank according to the present invention comprises: a tank body that stores a liquid; a plurality of heat insulating materials that cover the tank body; and a tape that covers a gap between adjacent heat insulating materials among the plurality of heat insulating materials. The tape is affixed so as to overlap the edges of adjacent heat insulating materials, and in the longitudinal direction of the tape, one of the adjacent heat insulating materials and the tape, and the other of the adjacent heat insulating materials and the tape are both continuously in close contact with each other.

Description

貯湯タンクhot water tank
　本開示は、断熱材を備えた貯湯タンクに関する。 The present disclosure relates to a hot water storage tank equipped with a heat insulating material.
　従来、貯湯タンクにおいて、タンク本体の周囲を所定の形状に成形された複数の断熱材で包囲することが知られている。複数の断熱材が使用されることで、組み立て性の向上及びコストの低減が図られている。ただし、複数の断熱材を組み立てた際に、複数の断熱材の間に段差又は隙間が生じることがある。この場合、複数の断熱材の間の隙間からタンク本体の熱が放熱し、貯湯タンクの断熱性能が低下する。その結果、給湯システムの省エネルギー性能が低下してしまう。 Conventionally, in hot water storage tanks, it has been known to surround the tank body with a plurality of heat insulating materials formed into a predetermined shape. The use of multiple heat insulating materials improves ease of assembly and reduces costs. However, when a plurality of heat insulating materials are assembled, a step or a gap may occur between the plurality of heat insulating materials. In this case, heat from the tank body radiates through the gaps between the plurality of heat insulating materials, and the heat insulation performance of the hot water storage tank deteriorates. As a result, the energy saving performance of the hot water system deteriorates.
　これに対し、特許文献１には、複数の断熱材を使用した場合のタンク本体の放熱を抑制する構成が開示されている。特許文献１の貯湯タンクは、上部、側面部、及び下部の少なくとも３つに分割された断熱材を備えている。上部及び下部の断熱材は成形断熱材であり、側面部の断熱材は真空断熱材である。上部断熱材又は下部断熱材の、側面部断熱材と略接触する部分の厚みは、側面部断熱材の厚みと略同一となっている。また、上部断熱材又は下部断熱材は、側面部断熱材の外周部に形成される熱溶着部と粘着テープで固定される。このような構成により、複数の断熱材同士の密着性を向上させ、隙間の発生が抑制されている。 In contrast, Patent Document 1 discloses a configuration that suppresses heat radiation from the tank body when a plurality of heat insulating materials are used. The hot water storage tank of Patent Document 1 includes a heat insulating material divided into at least three parts: an upper part, a side part, and a lower part. The upper and lower insulation materials are molded insulation materials, and the side insulation materials are vacuum insulation materials. The thickness of the portion of the upper heat insulating material or the lower heat insulating material that substantially contacts the side heat insulating material is approximately the same as the thickness of the side heat insulating material. Further, the upper heat insulating material or the lower heat insulating material is fixed to a thermally welded portion formed on the outer periphery of the side heat insulating material with an adhesive tape. Such a configuration improves the adhesion between the plurality of heat insulating materials and suppresses the occurrence of gaps.
特開２００９－２２９０２７号公報JP2009-229027A
　しかしながら、特許文献１に開示された貯湯タンクにおいては、例えば上部、側面部、及び下部の断熱材の厚み又は直径、もしくはタンク本体の外径に寸法のばらつきがある場合、テープで固定する断熱材表面が適切な位置からずれてしまう。その結果、断熱材の間に隙間又は段差が発生し、貼付するテープにシワ又は傾きができることがある。テープのシワが断熱材の隙間からテープ端部まで跨る場合、又はテープの傾きにより断熱材間の隙間をテープで完全に被覆できない場合、タンク本体の表面から断熱材外部への対流が発生してしまい、タンク本体が放熱してしまうことがある。 However, in the hot water storage tank disclosed in Patent Document 1, if there are variations in the thickness or diameter of the insulation materials at the upper, side, and lower portions, or in the outer diameter of the tank body, the insulation material fixed with tape may be The surface moves out of its proper position. As a result, gaps or steps may occur between the heat insulating materials, and the tape to be applied may be wrinkled or tilted. If wrinkles in the tape extend from the gaps in the insulation material to the ends of the tape, or if the tape is not able to completely cover the gaps between the insulation materials due to the inclination of the tape, convection may occur from the surface of the tank body to the outside of the insulation material. Otherwise, the tank body may radiate heat.
　本開示は、上記のような課題を解決するものであり、断熱材及びタンク本体の寸法にばらつきがある場合でも、タンク本体の放熱を抑制する貯湯タンクを提供するものである。 The present disclosure solves the above problems and provides a hot water storage tank that suppresses heat radiation from the tank body even when there are variations in the dimensions of the heat insulating material and the tank body.
　本開示に係る貯湯タンクは、液体を貯留するタンク本体と、タンク本体を覆う複数の断熱材と、複数の断熱材のうち、隣接する断熱材の間の隙間を被覆するテープと、を備え、テープは、隣接する断熱材の端と重なるように貼付され、テープの長辺方向において、隣接する断熱材の一方とテープ、及び隣接する断熱材の他方とテープが、それぞれ連続して密着している。 A hot water storage tank according to the present disclosure includes a tank body that stores liquid, a plurality of heat insulators that cover the tank body, and a tape that covers gaps between adjacent heat insulators among the plurality of heat insulators, The tape is pasted so as to overlap the edges of adjacent insulation materials, and in the long side direction of the tape, one of the adjacent insulation materials and the tape are in continuous and close contact with the other side of the adjacent insulation materials. There is.
　本開示の貯湯タンクによれば、隣接する断熱材の間の隙間を被覆するテープが、隣接する断熱材の端と重なるように貼付され、テープの長辺方向において、隣接する断熱材の一方とテープ、及び隣接する断熱材の他方とテープが、それぞれ連続して密着している。従って、断熱材及びタンク本体の寸法ばらつきがある場合でも、タンク本体の放熱を抑制することができる。 According to the hot water storage tank of the present disclosure, the tape covering the gap between adjacent insulating materials is attached so as to overlap the edges of the adjacent insulating materials, and in the long side direction of the tape, the tape covers the gap between adjacent insulating materials. The tape and the other adjacent heat insulating material are in continuous and close contact with each other. Therefore, even if there are dimensional variations in the heat insulating material and the tank body, heat radiation from the tank body can be suppressed.
実施の形態１に係る貯湯タンクの模式図である。1 is a schematic diagram of a hot water storage tank according to Embodiment 1. FIG. 実施の形態１に係る貯湯タンクの断面模式図である。1 is a schematic cross-sectional view of a hot water storage tank according to Embodiment 1. FIG. 実施の形態１に係る貯湯タンクと、貯湯タンクに接続される配管とを示す図である。FIG. 2 is a diagram showing a hot water storage tank and piping connected to the hot water storage tank according to the first embodiment. 実施の形態１に係るテープの貼付状態を示す模式図である。FIG. 3 is a schematic diagram showing a state in which a tape is attached according to Embodiment 1. FIG. 実施の形態２に係るテープの貼付状態を示す模式図である。FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 2; 実施の形態３に係るテープの貼付状態を示す模式図である。FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 3; 実施の形態４に係るテープの貼付状態を示す模式図である。FIG. 7 is a schematic diagram showing a state in which a tape is attached according to Embodiment 4; 実施の形態６に係る貯湯タンクの模式図である。FIG. 7 is a schematic diagram of a hot water storage tank according to Embodiment 6. 実施の形態７に係る貯湯タンクの模式図である。FIG. 7 is a schematic diagram of a hot water storage tank according to Embodiment 7.
　以下、本開示の実施の形態に係る貯湯タンク１について図面を参照しながら説明する。ここで、図１を含め、以下の図面において、同一の符号を付したものは、同一又は相当する構成であり、以下に記載する実施の形態の全文において共通することとする。また、以下、「上」、「下」、「左」、「右」、「前」、「後」等の向きを示す語を用いた説明については、貯湯タンク１が設置され、正面視した状態を基準にしたものとする。 Hereinafter, a hot water storage tank 1 according to an embodiment of the present disclosure will be described with reference to the drawings. Here, in the following drawings including FIG. 1, the same reference numerals denote the same or corresponding structures, which are common throughout the entire embodiment described below. In addition, in the following explanations using words indicating orientation such as "top", "bottom", "left", "right", "front", "rear", It shall be based on the condition.
　実施の形態１．
　図１は、実施の形態１に係る貯湯タンク１の模式図である。図２は、実施の形態１に係る貯湯タンク１の断面模式図である。図１において、外観から視認できない部分は破線で示されている。図２は、貯湯タンク１を図１のＡ－Ａ断面で切断した状態を示している。本実施の形態の貯湯タンク１は、水又は湯等の液体を貯留する円柱状のタンクである。なお、以下の説明においては、水は加熱されていない状態の水を指し、湯は加熱された状態の水を指すものとする。 Embodiment 1.
FIG. 1 is a schematic diagram of a hot water storage tank 1 according to the first embodiment. FIG. 2 is a schematic cross-sectional view of the hot water storage tank 1 according to the first embodiment. In FIG. 1, parts that cannot be visually recognized from the outside are indicated by broken lines. FIG. 2 shows the hot water storage tank 1 cut along the AA cross section in FIG. The hot water storage tank 1 of this embodiment is a cylindrical tank that stores liquid such as water or hot water. In the following description, water refers to unheated water, and hot water refers to heated water.
　図１及び図２に示すように、貯湯タンク１は、液体を貯留するタンク本体２と、タンク本体２を覆う下部断熱材３１、側部断熱材３２及び上部断熱材３３と、下部断熱材３１と側部断熱材３２及び上部断熱材３３と側部断熱材３２をそれぞれ接続するテープ４とを備える。なお、以下では下部断熱材３１、側部断熱材３２及び上部断熱材３３を断熱材と総称することがある。 As shown in FIGS. 1 and 2, the hot water storage tank 1 includes a tank body 2 that stores liquid, a lower insulation material 31 that covers the tank body 2, a side insulation material 32, an upper insulation material 33, and a lower insulation material 31. and a tape 4 connecting the side heat insulating material 32 and the top heat insulating material 33 to the side heat insulating material 32, respectively. In addition, below, the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be collectively called a heat insulating material.
　タンク本体２の外観は円柱状であり、内部は空洞である。タンク本体２は、中心軸Ｃを基準に略対称の形状である。タンク本体２は、底面２１、側面２２、及び天面２３からなる。底面２１は、タンク本体２の下部の半球形状の部分に相当する。側面２２は、底面２１に接続され、タンク本体２の胴部である円筒形状の部分に相当する。天面２３は、側面２２に接続され、タンク本体２の上部の半球形状の部分に相当する。 The tank body 2 has a cylindrical appearance and a hollow interior. The tank body 2 has a substantially symmetrical shape with respect to the central axis C. The tank body 2 consists of a bottom surface 21, side surfaces 22, and a top surface 23. The bottom surface 21 corresponds to a lower hemispherical portion of the tank body 2. The side surface 22 is connected to the bottom surface 21 and corresponds to a cylindrical portion that is the body of the tank body 2. The top surface 23 is connected to the side surface 22 and corresponds to an upper hemispherical portion of the tank body 2.
　タンク本体２の底面２１には、取り出し口５１ａ及び取り出し口５１ｂが形成されている。タンク本体２の天面２３には、取り出し口５１ｃ及び取り出し口５１ｄが形成されている。 A take-out port 51a and a take-out port 51b are formed on the bottom surface 21 of the tank body 2. A take-out port 51c and a take-out port 51d are formed on the top surface 23 of the tank body 2.
　図３は、実施の形態１に係る貯湯タンク１と、貯湯タンク１に接続される配管とを示す図である。図３に示すように、タンク本体２には、水又は湯が流通する、底部配管５２ａ、水供給配管５２ｂ、上部配管５２ｃ、及び給湯配管５２ｄが接続されている。 FIG. 3 is a diagram showing the hot water storage tank 1 and piping connected to the hot water storage tank 1 according to the first embodiment. As shown in FIG. 3, the tank body 2 is connected to a bottom pipe 52a, a water supply pipe 52b, an upper pipe 52c, and a hot water supply pipe 52d through which water or hot water flows.
　底部配管５２ａの入口は、タンク本体２の下部に設けられた取り出し口５１ａに接続されている。底部配管５２ａの出口は、加熱装置９に接続されている。加熱装置９は、ヒータ又はヒートポンプを用いて水を加熱する装置である。水供給配管５２ｂの入口は、例えば市水等の供給管（図示せず）に接続されている。水供給配管５２ｂの出口は分岐しており、一方がタンク本体２の下部に設けられた取り出し口５１ｂに接続され、他方が給湯配管５２ｄに接続されている。 The inlet of the bottom pipe 52a is connected to the outlet 51a provided at the bottom of the tank body 2. The outlet of the bottom pipe 52a is connected to the heating device 9. The heating device 9 is a device that heats water using a heater or a heat pump. The inlet of the water supply pipe 52b is connected to a supply pipe (not shown) for, for example, city water. The outlet of the water supply pipe 52b is branched, one of which is connected to the outlet 51b provided at the bottom of the tank body 2, and the other connected to the hot water supply pipe 52d.
　上部配管５２ｃの入口は、加熱装置９に接続されている。上部配管５２ｃの出口は、タンク本体２の上部に設けられた取り出し口５１ｃに接続されている。給湯配管５２ｄの入口は、タンク本体２の上部に設けられた取り出し口５１ｄに接続されている。給湯配管５２ｄの出口は、利用側の配管（図示せず）等に接続されている。 The inlet of the upper pipe 52c is connected to the heating device 9. An outlet of the upper pipe 52c is connected to an outlet 51c provided at the upper part of the tank body 2. The inlet of the hot water supply pipe 52d is connected to an outlet 51d provided at the top of the tank body 2. The outlet of the hot water supply pipe 52d is connected to a user side pipe (not shown) or the like.
　貯湯タンク１は、次のようにして貯湯及び出湯を行う。先ず、タンク本体２内に貯留されている水が底部配管５２ａを通って加熱装置９に送られ、加熱される。加熱された水は、上部配管５２ｃを通って、タンク本体２内の上部に戻される。外部からタンク本体２に水を供給する場合、水供給配管５２ｂからタンク本体２の下部に水を供給する。 The hot water storage tank 1 stores and releases hot water in the following manner. First, water stored in the tank body 2 is sent to the heating device 9 through the bottom pipe 52a and heated. The heated water is returned to the upper part of the tank body 2 through the upper pipe 52c. When water is supplied to the tank body 2 from the outside, water is supplied to the lower part of the tank body 2 from the water supply pipe 52b.
　タンク本体２の下部に水を供給することにより、タンク本体２内に貯められている湯が押し上げられる。これにより、タンク本体２の上部に接続される給湯配管５２ｄから外部に出湯される。そして、給湯配管５２ｄから供給される湯と、水供給配管５２ｂから供給される水とが混ぜられることにより、利用者が所望する温度の湯が生成されて供給される。 By supplying water to the lower part of the tank body 2, the hot water stored in the tank body 2 is pushed up. Thereby, hot water is discharged to the outside from the hot water supply pipe 52d connected to the upper part of the tank body 2. The hot water supplied from the hot water supply pipe 52d and the water supplied from the water supply pipe 52b are mixed to generate and supply hot water at a temperature desired by the user.
　湯を貯めた直後のタンク本体２は一様に高温のお湯で満たされるものの、時間の経過、並びに貯湯及び出湯動作によって、タンク本体２内の上部が高温になり、下部が低温になるため、温度境界層が形成される。これは、水の比重が温度によって変化し、高温の水は比重が軽くなるためである。 Immediately after storing hot water, the tank body 2 is uniformly filled with hot water, but as time passes and the hot water is stored and dispensed, the upper part of the tank body 2 becomes hotter and the lower part becomes colder. A thermal boundary layer is formed. This is because the specific gravity of water changes depending on the temperature, and high temperature water has a lighter specific gravity.
　図１及び図２に戻って、断熱材及びテープ４について説明する。本実施の形態では、タンク本体２は、下部断熱材３１、側部断熱材３２、及び上部断熱材３３の３つの断熱材で覆われている。下部断熱材３１、側部断熱材３２、及び上部断熱材３３は、タンク本体２と周辺空気との間で断熱する。 Returning to FIGS. 1 and 2, the heat insulating material and tape 4 will be explained. In this embodiment, the tank body 2 is covered with three heat insulating materials: a lower heat insulating material 31, a side heat insulating material 32, and an upper heat insulating material 33. The lower insulation material 31, the side insulation material 32, and the upper insulation material 33 provide insulation between the tank body 2 and the surrounding air.
　図１及び図２に示すように、下部断熱材３１は、中空の略半球形状である。下部断熱材３１は、タンク本体２の底面２１を覆っている。下部断熱材３１は、タンク本体２の底面２１に密着して取り付けられている。なお、下部断熱材３１は、タンク本体２の底面２１に加え、側面２２の中央よりも下の部分を覆ってもよい。この場合、下部断熱材３１は、タンク本体２の底面２１及び側面２２の一部に密着して取り付けられる。 As shown in FIGS. 1 and 2, the lower heat insulating material 31 has a hollow, substantially hemispherical shape. The lower heat insulating material 31 covers the bottom surface 21 of the tank body 2. The lower heat insulating material 31 is attached in close contact with the bottom surface 21 of the tank body 2. In addition to the bottom surface 21 of the tank body 2, the lower heat insulating material 31 may cover a portion below the center of the side surface 22. In this case, the lower heat insulating material 31 is attached in close contact with a portion of the bottom surface 21 and side surfaces 22 of the tank body 2.
　下部断熱材３１には、挿通孔５３ａ及び５３ｂが形成されている。挿通孔５３ａは、取り出し口５１ａに連通し、底部配管５２ａが挿通する孔である。挿通孔５３ｂは、取り出し口５１ｂに連通し、水供給配管５２ｂが挿通する孔である。挿通孔５３ａ及び５３ｂが形成されていることで、下部断熱材３１と、底部配管５２ａ及び水供給配管５２ｂとの干渉が抑制されている。 The lower heat insulating material 31 has insertion holes 53a and 53b formed therein. The insertion hole 53a is a hole that communicates with the outlet 51a and through which the bottom pipe 52a is inserted. The insertion hole 53b communicates with the outlet 51b and is a hole through which the water supply pipe 52b is inserted. By forming the insertion holes 53a and 53b, interference between the lower heat insulating material 31 and the bottom pipe 52a and the water supply pipe 52b is suppressed.
　側部断熱材３２は、中空の略円筒形状である。側部断熱材３２は、タンク本体２の側面２２を覆っている。側部断熱材３２は、タンク本体２の側面２２に密着して取り付けられている。側部断熱材３２は、タンク本体２の側面２２全体を覆うものであってもよいし、側面２２のうち、下部断熱材３１が覆う部分よりも上方、且つ上部断熱材３３が覆う部分よりも下方を覆うものであってもよい。 The side heat insulating material 32 has a hollow, substantially cylindrical shape. The side insulation material 32 covers the side surface 22 of the tank body 2. The side heat insulating material 32 is attached in close contact with the side surface 22 of the tank body 2. The side heat insulating material 32 may cover the entire side surface 22 of the tank body 2, or may cover the entire side surface 22 of the tank body 2, or may cover the side surface 22 above the portion covered by the lower heat insulating material 31 and above the portion covered by the top heat insulating material 33. It may also cover the lower part.
　上部断熱材３３は、中空の略半球形状である。上部断熱材３３は、タンク本体２の天面２３を覆っている。上部断熱材３３は、タンク本体２の天面２３に密着して取り付けられている。なお、上部断熱材３３は、タンク本体２の天面２３に加え、側面２２の中央よりも上の部分を覆ってもよい。この場合、上部断熱材３３は、タンク本体２の天面２３及び側面２２の一部に密着して取り付けられる。 The upper heat insulating material 33 has a hollow, substantially hemispherical shape. The upper heat insulating material 33 covers the top surface 23 of the tank body 2. The upper heat insulating material 33 is attached in close contact with the top surface 23 of the tank body 2. In addition to the top surface 23 of the tank body 2, the upper heat insulating material 33 may cover a portion above the center of the side surface 22. In this case, the upper heat insulating material 33 is attached in close contact with a portion of the top surface 23 and side surfaces 22 of the tank body 2.
　上部断熱材３３には、挿通孔５３ｃ及び５３ｄが形成されている。挿通孔５３ｃは、取り出し口５１ｃに連通し、上部配管５２ｃが挿通する孔である。挿通孔５３ｄは、取り出し口５１ｄに連通し、給湯配管５２ｄが挿通する孔である。挿通孔５３ｃ及び５３ｄが形成されていることで、上部断熱材３３と、上部配管５２ｃ及び給湯配管５２ｄとの干渉を抑制されている。 Insertion holes 53c and 53d are formed in the upper heat insulating material 33. The insertion hole 53c communicates with the outlet 51c and is a hole through which the upper pipe 52c is inserted. The insertion hole 53d communicates with the outlet 51d and is a hole through which the hot water supply pipe 52d is inserted. By forming the insertion holes 53c and 53d, interference between the upper heat insulating material 33 and the upper pipe 52c and the hot water supply pipe 52d is suppressed.
　下部断熱材３１、側部断熱材３２、及び上部断熱材３３は、例えば、発泡ポリスチレンからなる発泡断熱材である。下部断熱材３１、側部断熱材３２及び上部断熱材３３は、同じ材質で構成されてもよいし、異なる材質で構成されてもよい。下部断熱材３１、側部断熱材３２及び上部断熱材３３を異なる材質で構成する場合、上下に隣接する断熱材のうち、上側に配置される断熱材の熱伝導率を、下側に配置される断熱材の熱伝導率よりも小さくする。言い換えると、上下に隣接する断熱材のうち、上側に配置される断熱材の断熱性能を、下側に配置される断熱材の断熱性能よりも高くする。 The lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 are foamed heat insulating materials made of foamed polystyrene, for example. The lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be made of the same material, or may be made of different materials. When the lower insulating material 31, the side insulating material 32, and the upper insulating material 33 are made of different materials, the thermal conductivity of the upper insulating material among the vertically adjacent insulating materials is the same as that of the insulating material located on the lower side. The thermal conductivity of the insulation material used should be lower than that of the insulation material used. In other words, among the vertically adjacent heat insulating materials, the heat insulating performance of the heat insulating material arranged on the upper side is made higher than the heat insulating performance of the heat insulating material arranged on the lower side.
　具体的には、下部断熱材３１よりも側部断熱材３２と上部断熱材３３の熱伝導率を小さくする。又は、下部断熱材３１と側部断熱材３２よりも上部断熱材３３の熱伝導率を小さくする。又は、下部断熱材３１よりも側部断熱材３２の熱伝導率を小さくし、且つ側部断熱材３２よりも上部断熱材３３の熱伝導率を小さくする。水の密度の温度依存性により、タンク本体２内の温水のうち温度の高い水がより上部に対流移動するため、上側に配置される断熱材の熱伝導率を小さくすることで、温度の高い上部を適切に断熱することができる。 Specifically, the thermal conductivity of the side heat insulating material 32 and the top heat insulating material 33 is made smaller than that of the lower heat insulating material 31. Alternatively, the thermal conductivity of the upper insulating material 33 is made smaller than that of the lower insulating material 31 and the side insulating material 32. Alternatively, the thermal conductivity of the side insulation material 32 is made lower than that of the lower insulation material 31, and the thermal conductivity of the upper insulation material 33 is made lower than that of the side insulation material 32. Due to the temperature dependence of water density, the higher temperature water in the tank body 2 moves to the upper part by convection, so by reducing the thermal conductivity of the insulation material placed on the upper side, The top can be properly insulated.
　図２に示すように、下部断熱材３１の上端面３１２、側部断熱材３２の下端面３２１及び上端面３２２、並びに上部断熱材３３の下端面３３１は、全周にわたり、略水平に形成されている。下部断熱材３１は、側部断熱材３２と上下方向で隣接し、下部断熱材３１の上端面３１２は、側部断熱材３２の下端面３２１と対向している。上部断熱材３３は、側部断熱材３２と上下方向で隣接し、上部断熱材３３の下端面３３１は、側部断熱材３２の上端面３２２と対向している。下部断熱材３１、側部断熱材３２、及び上部断熱材３３は、少なくとも隣接する部分において、それぞれ略同じ厚さとなっている。 As shown in FIG. 2, the upper end surface 312 of the lower insulation material 31, the lower end surface 321 and the upper end surface 322 of the side insulation material 32, and the lower end surface 331 of the upper insulation material 33 are formed substantially horizontally over the entire circumference. ing. The lower heat insulating material 31 is vertically adjacent to the side heat insulating material 32 , and the upper end surface 312 of the lower heat insulating material 31 faces the lower end surface 321 of the side heat insulating material 32 . The upper heat insulating material 33 is vertically adjacent to the side heat insulating material 32 , and the lower end surface 331 of the upper heat insulating material 33 faces the upper end surface 322 of the side heat insulating material 32 . The lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 have substantially the same thickness at least in adjacent portions.
　ここで、側部断熱材３２の下端面３２１は、下部断熱材３１の上端面３１２と接し、側部断熱材３２の上端面３２２は、上部断熱材３３の下端面３３１と接するよう寸法が設計されている。しかしながら、製造誤差等により、各断熱材又はタンク本体２の寸法にばらつきが発生した場合、隣接する２つの断熱材の間に隙間Ｇが発生する。本実施の形態の場合、側部断熱材３２の下端面３２１と下部断熱材３１の上端面３１２との間、又は上部断熱材３３の下端面３３１と側部断熱材３２の上端面３２２との間に隙間Ｇが発生する。 Here, the dimensions are designed so that the lower end surface 321 of the side insulation material 32 is in contact with the upper end surface 312 of the lower insulation material 31, and the upper end surface 322 of the side insulation material 32 is in contact with the lower end surface 331 of the upper insulation material 33. has been done. However, if variations occur in the dimensions of each heat insulator or the tank body 2 due to manufacturing errors or the like, a gap G will occur between two adjacent heat insulators. In the case of this embodiment, between the lower end surface 321 of the side insulation material 32 and the upper end surface 312 of the lower insulation material 31, or between the lower end surface 331 of the upper insulation material 33 and the upper end surface 322 of the side insulation material 32. A gap G occurs between them.
　図４は、実施の形態１に係るテープ４の貼付状態を示す模式図である。図４に示すように、本実施の形態のテープ４は、断熱材間の隙間Ｇを被覆している。図４の例では、下部断熱材３１と側部断熱材３２の間の隙間Ｇがテープ４によって被覆されている。上部断熱材３３と側部断熱材３２の間の隙間Ｇも、図４に示す下部断熱材３１と側部断熱材３２の間の隙間Ｇと同様にテープ４によって被覆されている。 FIG. 4 is a schematic diagram showing how the tape 4 is attached according to the first embodiment. As shown in FIG. 4, the tape 4 of this embodiment covers the gap G between the heat insulating materials. In the example of FIG. 4, the gap G between the lower heat insulating material 31 and the side heat insulating material 32 is covered with the tape 4. The gap G between the upper heat insulating material 33 and the side heat insulating material 32 is also covered with the tape 4 similarly to the gap G between the lower heat insulating material 31 and the side heat insulating material 32 shown in FIG.
　テープ４は、ビニルからなる基材と、基材の全面に設けられた粘着層とからなる。基材は、シート又はフィルムなどであり、粘着層は粘性のある粘着剤からなる。断熱材間の隙間Ｇはタンク本体２の外側を周方向に線状に延びて形成される。テープ４は、長辺が周方向に延びる隙間Ｇと平行に延びて、隣接する断熱材に貼り付けられる。なお、テープ４の短辺と平行な方向を短辺方向とし、図１、２及び４の場合、短辺方向は貯湯タンク１が設置された状態の上下方向である。また、テープ４の長辺と平行な方向を長辺方向とし、図１、２及び４の場合、テープ４の長辺方向は、タンク本体２の周方向である。 The tape 4 consists of a base material made of vinyl and an adhesive layer provided on the entire surface of the base material. The base material is a sheet or film, and the adhesive layer is made of a viscous adhesive. The gap G between the heat insulating materials is formed by extending linearly around the outside of the tank body 2 in the circumferential direction. The tape 4 extends parallel to the gap G whose long sides extend in the circumferential direction, and is attached to the adjacent heat insulating material. Note that the direction parallel to the short side of the tape 4 is defined as the short side direction, and in the case of FIGS. 1, 2, and 4, the short side direction is the vertical direction when the hot water storage tank 1 is installed. Further, the direction parallel to the long side of the tape 4 is defined as the long side direction, and in the case of FIGS. 1, 2, and 4, the long side direction of the tape 4 is the circumferential direction of the tank body 2.
　テープ４は、複数の断熱材のうち、隣接する２つ断熱材の端にそれぞれ重なるように貼付される。本実施の形態の場合、隣接する２つの断熱材は、下部断熱材３１と側部断熱材３２、及び上部断熱材３３と側部断熱材３２である。図４に示すように、下部断熱材３１と側部断熱材３２の間の隙間Ｇを被覆するテープ４は、下部断熱材３１の上端及び側部断熱材３２の下端に重なるように貼付される。また、上部断熱材３３と側部断熱材３２の隙間Ｇを被覆するテープ４は、側部断熱材３２の上端及び上部断熱材３３の下端に重なるように貼付される。テープ４によって、下部断熱材３１と側部断熱材３２、及び上部断熱材３３と側部断熱材３２がそれぞれ接続される。 The tape 4 is attached to the ends of two adjacent heat insulating materials among the plurality of heat insulating materials so as to overlap each other. In the case of this embodiment, the two adjacent heat insulating materials are the lower heat insulating material 31 and the side heat insulating material 32, and the upper heat insulating material 33 and the side heat insulating material 32. As shown in FIG. 4, the tape 4 covering the gap G between the lower insulation material 31 and the side insulation material 32 is pasted so as to overlap the upper end of the lower insulation material 31 and the lower end of the side insulation material 32. . Further, the tape 4 covering the gap G between the upper heat insulating material 33 and the side heat insulating material 32 is attached so as to overlap the upper end of the side heat insulating material 32 and the lower end of the upper heat insulating material 33. The tape 4 connects the lower insulation material 31 and the side insulation material 32, and the upper insulation material 33 and the side insulation material 32, respectively.
　また、各断熱材又はタンク本体２の寸法にばらつきが発生した場合、隣接する２つの断熱材の間に段差（凹凸形状）も発生する。この場合、断熱材間の段差によって、テープ４にシワが発生する。テープ４のシワが隙間Ｇからテープ４の短辺方向の端まで達すると、タンク本体２の表面から隙間Ｇ及びシワを通って断熱材外部への対流が発生してしまう。そこで、本実施の形態のテープ４は、長辺方向において、隣接する一方の断熱材とテープ４、他方の断熱材とテープ４とをそれぞれ連続して密着させている。言い換えると、テープ４は、図４に示す非密着領域Ｒ２がテープ４の短辺方向の端に到達しないように、すなわち、密着領域Ｒ１がテープ４の長辺方向に連続するように貼り付けられる。このとき、例えばテープ４の短辺方向の幅は、公差範囲内の寸法のばらつきが発生した場合の隙間Ｇの幅の３倍以上とする。 Additionally, if variations occur in the dimensions of each heat insulating material or the tank body 2, a step (uneven shape) also occurs between two adjacent heat insulating materials. In this case, wrinkles occur in the tape 4 due to the difference in level between the heat insulating materials. When the wrinkles of the tape 4 reach from the gap G to the end of the tape 4 in the short side direction, convection will occur from the surface of the tank body 2 to the outside of the heat insulating material through the gap G and the wrinkles. Therefore, in the tape 4 of the present embodiment, one of the adjacent heat insulating materials and the tape 4 are in continuous contact with each other, and the tape 4 and the other heat insulating material are in continuous contact with each other in the long side direction. In other words, the tape 4 is pasted so that the non-adhesion region R2 shown in FIG. . At this time, for example, the width of the tape 4 in the short side direction is set to be at least three times the width of the gap G when dimensional variations within the tolerance range occur.
　以上のように、本実施の形態によれば、隣接する断熱材間の隙間Ｇをテープ４で被覆し、テープ４の短辺方向の幅内において、隙間Ｇと平行に、隣接する一方の断熱材とテープ４、及び他方の断熱材とテープ４をそれぞれ連続して密着させている。その結果、断熱材及びタンク本体２に寸法ばらつきがある場合でも、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。なお、「隙間Ｇと平行」とは、隙間Ｇと厳密に平行な場合だけでなく、略平行な場合も含むものとする。 As described above, according to the present embodiment, the gap G between adjacent heat insulating materials is covered with the tape 4, and within the width of the tape 4 in the short side direction, one of the adjacent heat insulating materials is covered in parallel with the gap G. The material and the tape 4, and the other heat insulating material and the tape 4 are continuously brought into close contact with each other. As a result, even if there are dimensional variations in the heat insulating material and the tank body 2, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed. Note that "parallel to the gap G" includes not only the case of being strictly parallel to the gap G but also the case of being substantially parallel to the gap G.
　実施の形態２．
　実施の形態２について説明する。図５は、実施の形態２に係るテープ４Ａの貼付状態を示す模式図である。実施の形態２は、テープ４Ａの材質において実施の形態１と相違する。実施の形態２における貯湯タンク１のその他の構成は実施の形態１と同じであり、以下では実施の形態１との相違点を中心に説明する。 Embodiment 2.
Embodiment 2 will be described. FIG. 5 is a schematic diagram showing a state in which the tape 4A according to the second embodiment is attached. The second embodiment differs from the first embodiment in the material of the tape 4A. The rest of the configuration of the hot water storage tank 1 in the second embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly described below.
　本実施の形態のテープ４Ａは、柔軟性を有する材質で構成されるか、又は薄く構成される。例えば、テープ４Ａを折り曲げた際の基材の曲げ応力より接着強度が強くなるよう、テープ４Ａの基材を柔軟性を有する材質とするか、基材の厚さを薄くする。具体的には、ショアＡ硬度で柔軟性を示す場合、テープ４Ａの基材のショアＡ硬度は、５０～１００の範囲内とする。テープ４Ａの基材の材料としては、ポリオレフィン（ＰＯ）、ポリエチレン（ＰＥ）、軟質塩化ビニル（ＰＶＣ）、ダンプロン（ＯＰＰ）、ポリエステル（ＰＥＴ）、ポリイミド（ＰＩ）又はセロハンが用いられる。また、テープ４Ａの厚さは、約０．２ｍｍ以下とする。 The tape 4A of this embodiment is made of a flexible material or is thin. For example, the base material of the tape 4A is made of a flexible material or the thickness of the base material is made thin so that the adhesive strength is stronger than the bending stress of the base material when the tape 4A is bent. Specifically, when flexibility is indicated by Shore A hardness, the Shore A hardness of the base material of tape 4A is within the range of 50 to 100. As the material of the base material of the tape 4A, polyolefin (PO), polyethylene (PE), flexible vinyl chloride (PVC), Damplon (OPP), polyester (PET), polyimide (PI), or cellophane is used. Further, the thickness of the tape 4A is approximately 0.2 mm or less.
テープ４Ａを柔軟性を有する構成とすることで、断熱材間の段差によるシワによってテープ４Ａが断熱材から部分的に浮いている場合も、作業者がシワ内部の空気を押し出しながら浮いたテープ４Ａを断熱材に貼付することができる。また、部分的にテープ４Ａ同士を山折りに隙間なく貼り合わせることもできる。これにより、図５に示すようにテープ４Ａのシワを無くし、非密着領域Ｒ２を小さくし、密着領域Ｒ１を大きくすることができる。 By making the tape 4A flexible, even if the tape 4A is partially lifted from the insulation material due to wrinkles caused by the step between the insulation materials, the operator can push out the air inside the wrinkles to remove the lifted tape 4A. can be attached to the insulation material. Further, the tapes 4A can be partially attached to each other in a mountain-fold manner without any gaps. As a result, as shown in FIG. 5, it is possible to eliminate wrinkles in the tape 4A, reduce the non-adhesion region R2, and enlarge the adhesion region R1.
以上のように、本実施の形態によれば、断熱材及びタンク本体２の寸法のばらつきにより断熱材間に段差が発生し、それによりテープ４Ａにシワが発生した場合も、作業者が指又は爪でシワを容易に解消することができる。これにより、テープ４Ａの長辺方向において、隣接する一方の断熱材とテープ４Ａ、及び他方の断熱材とテープ４Ａをそれぞれ連続して密着させることができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。また、テープ４Ａのシワを解消して密着領域Ｒ１とすることができるため、実施の形態１に比べてテープ４Ａの短辺方向の幅を小さくすることができる。 As described above, according to the present embodiment, even when a step is generated between the insulation materials due to variations in the dimensions of the insulation materials and the tank body 2, and wrinkles are generated in the tape 4A, the operator can Wrinkles can be easily removed with your nails. Thereby, in the long side direction of the tape 4A, one of the adjacent heat insulating materials and the tape 4A, and the other heat insulating material and the tape 4A can be brought into continuous contact with each other. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed. Further, since the wrinkles of the tape 4A can be eliminated to form the close contact region R1, the width of the tape 4A in the short side direction can be made smaller than in the first embodiment.
　実施の形態３．
　実施の形態３について説明する。図６は、実施の形態３に係るテープ４Ｂの貼付状態を示す模式図である。実施の形態３は、テープ４Ｂの構成において実施の形態１と相違する。実施の形態３における貯湯タンク１のその他の構成は実施の形態１と同じであり、実施の形態１との相違点を中心に説明する。 Embodiment 3.
Embodiment 3 will be described. FIG. 6 is a schematic diagram showing a state in which the tape 4B according to the third embodiment is attached. Embodiment 3 differs from Embodiment 1 in the configuration of tape 4B. The rest of the configuration of the hot water storage tank 1 in the third embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly explained.
　図６に示すように、本実施の形態のテープ４Ｂの粘着層４１は、短辺方向の両端のみに設けられている。言い換えると、テープ４Ｂの短辺方向の中央、すなわち隙間Ｇと対向する部分には、粘着層４１が設けられていない。テープ４Ｂの各粘着層４１の幅は、例えば、テープ４Ａの短辺方向の幅の１／３以下である。 As shown in FIG. 6, the adhesive layer 41 of the tape 4B of this embodiment is provided only at both ends in the short side direction. In other words, the adhesive layer 41 is not provided at the center of the tape 4B in the short side direction, that is, at the portion facing the gap G. The width of each adhesive layer 41 of the tape 4B is, for example, 1/3 or less of the width of the tape 4A in the short side direction.
　本実施の形態によれば、断熱材及びタンク本体２の寸法のばらつきにより断熱材間に段差が発生し、それによりテープ４Ｂにシワが発生した場合も、粘着層４１が設けられていない部分にシワを集め、粘着層４１が設けられたテープ４Ｂの短辺方向の両端にはシワを作らせず、断熱材と密着させることができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。 According to this embodiment, even if a step is generated between the insulation materials due to variations in the dimensions of the insulation materials and the tank body 2, and wrinkles are generated in the tape 4B, the adhesive layer 41 is not provided. By collecting wrinkles, the tape 4B provided with the adhesive layer 41 can be brought into close contact with the heat insulating material without forming wrinkles at both ends in the short side direction. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
　実施の形態４．
　実施の形態４について説明する。図７は、実施の形態４に係るテープ４Ｃの貼付状態を示す模式図である。実施の形態４は、テープ４Ｃの材質において実施の形態１と相違する。実施の形態４における貯湯タンク１のその他の構成は実施の形態１と同じであり、実施の形態１との相違点を中心に説明する。 Embodiment 4.
Embodiment 4 will be described. FIG. 7 is a schematic diagram showing a state in which the tape 4C according to the fourth embodiment is attached. Embodiment 4 differs from Embodiment 1 in the material of tape 4C. The rest of the configuration of the hot water storage tank 1 in the fourth embodiment is the same as in the first embodiment, and the explanation will focus on the differences from the first embodiment.
　実施の形態３のテープ４Ｃは、伸張性を有する材質で構成される。具体的には、テープ４Ｃとして、ＪＩＳ　Ｚ２０３７試験規格における「伸び」が１００％以上の材質を用いる。例えば、ポリオレフィン（ＰＯ）、ポリエチレン（ＰＥ）、塩化ビニル（ＰＶＣ）、又はダンプロン（ＯＰＰ）などが伸張性を有する材質としてテープ４Ｃに用いられる。 The tape 4C of the third embodiment is made of a stretchable material. Specifically, as the tape 4C, a material having an "elongation" of 100% or more according to the JIS Z2037 test standard is used. For example, polyolefin (PO), polyethylene (PE), vinyl chloride (PVC), Danprone (OPP), or the like is used as a material having extensibility for the tape 4C.
　テープ４Ｃを伸張性を有する材質で構成することで、寸法ばらつきにより生じた断熱材間の段差でテープ４Ｃにシワが発生し、テープ４Ｃが断熱材から部分的に浮いている場合も、テープ４Ｃを部分的に伸ばして段差に追従させて密着させることができる。これにより、テープ４Ｃと断熱材（図７の場合は下部断熱材３１及び側部断熱材３２）の外周表面とを密着させることができる。また、本実施の形態においては、図７に示すように、非密着領域Ｒ２を隙間Ｇの部分のみとし、テープ４Ｃの断熱材との貼付部分全体を密着領域Ｒ１とすることができる。 By composing the tape 4C with a stretchable material, even if the tape 4C wrinkles due to a step between the insulation materials caused by dimensional variations and the tape 4C is partially lifted from the insulation material, the tape 4C It is possible to partially extend the material to follow the step and make it fit closely. Thereby, the tape 4C and the outer circumferential surface of the heat insulating material (in the case of FIG. 7, the lower heat insulating material 31 and the side heat insulating material 32) can be brought into close contact. Further, in this embodiment, as shown in FIG. 7, the non-adhesive region R2 can be made only in the gap G, and the entire pasted part of the tape 4C with the heat insulating material can be the adhesion region R1.
　本実施の形態によれば、本実施の形態によれば、断熱材及びタンク本体２の寸法のばらつきにより断熱材間に段差が発生し、それによりテープ４Ｃにシワが発生した場合も、テープ４Ｃを部分的に伸ばして段差に追従させて密着させることができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。 According to this embodiment, even when a step is generated between the insulation materials due to variations in the dimensions of the insulation materials and the tank body 2, and wrinkles are generated on the tape 4C, the tape 4C It is possible to partially extend the material to follow the step and make it fit closely. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
　実施の形態５．
　実施の形態５について説明する。実施の形態５は、テープ４の材質において実施の形態１と相違する。実施の形態５における貯湯タンク１のその他の構成は実施の形態１と同じであり、実施の形態１との相違点を中心に説明する。 Embodiment 5.
Embodiment 5 will be described. The fifth embodiment differs from the first embodiment in the material of the tape 4. The rest of the configuration of the hot water storage tank 1 in the fifth embodiment is the same as that in the first embodiment, and the explanation will focus on the differences from the first embodiment.
　本実施の形態のテープ４は、熱収縮フィルムなどの熱収縮性を有する材質で構成される。この場合、テープ４の貼り付け時は、例えばテープ４の短辺方向の上端を上部断熱材３３の下端を被覆するように固定し、テープ４の短辺方向の下端を側部断熱材３２の上端を被覆するように固定する。そして、テープ４を固定した後に、加熱装置９で温めた湯をタンク本体２に満たすことで、タンク本体２の湯の熱によりテープ４が収縮し、テープ４が被覆している断熱材の表面の形状に追従して密着する。なお、貼り付け時のテープ４の貼付状態は、図６に示すテープ４Ｂの貼付状態と同様であり、熱収縮後のテープ４の貼付状態は図７に示すテープ４Ｃの貼付状態と同様となる。 The tape 4 of this embodiment is made of a heat-shrinkable material such as a heat-shrinkable film. In this case, when attaching the tape 4, for example, the upper end of the tape 4 in the short side direction is fixed so as to cover the lower end of the upper insulating material 33, and the lower end of the tape 4 in the short side direction is fixed to the side insulating material 32. Fix it so that it covers the top edge. After fixing the tape 4, by filling the tank body 2 with hot water heated by the heating device 9, the tape 4 contracts due to the heat of the hot water in the tank body 2, and the surface of the heat insulating material covered by the tape 4 is It follows the shape and adheres closely. The state of application of the tape 4 at the time of pasting is the same as the state of application of the tape 4B shown in FIG. 6, and the state of application of the tape 4 after heat shrinkage is the same as the state of application of the tape 4C shown in FIG. .
　本実施の形態によれば、断熱材及びタンク本体２の寸法のばらつきにより断熱材間に段差が発生した場合も、テープ４を熱収縮により段差に追従させて密着させることができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。 According to the present embodiment, even if a step occurs between the insulating materials due to variations in the dimensions of the insulating material and the tank body 2, the tape 4 can be made to follow the step and adhere tightly by thermal contraction. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
　実施の形態６．
　実施の形態６について説明する。図８は、実施の形態６に係る貯湯タンク１Ａの模式図である。実施の形態６は、テープ４の貼付方法において実施の形態１と相違する。実施の形態６における貯湯タンク１Ａのその他の構成は実施の形態１と同じであり、実施の形態１との相違点を中心に説明する。 Embodiment 6.
Embodiment 6 will be described. FIG. 8 is a schematic diagram of a hot water storage tank 1A according to the sixth embodiment. Embodiment 6 differs from Embodiment 1 in the method of applying tape 4. The rest of the configuration of the hot water storage tank 1A in the sixth embodiment is the same as in the first embodiment, and the differences from the first embodiment will be mainly explained.
　図８に示すように、本実施の形態のテープ４は、重ねて貼付された重複領域Ｒ３を有する。重複領域Ｒ３は、テープ４の貼付の開始位置Ｐ１と終了位置Ｐ２とを長辺方向にずらすことで形成される。重複領域Ｒ３は、断熱材間の段差が大きい部分を被覆するよう設けられる。図８の例では、上部断熱材３３の下端と側部断熱材３２の上端に嵌合用の凹凸形状である嵌合部３０が形成されており、テープ４の重複領域Ｒ３によって嵌合部３０が被覆されている。 As shown in FIG. 8, the tape 4 of this embodiment has an overlapping region R3 that is pasted overlappingly. The overlapping region R3 is formed by shifting the start position P1 and the end position P2 of pasting the tape 4 in the long side direction. The overlapping region R3 is provided to cover a portion where the difference in level between the heat insulating materials is large. In the example of FIG. 8, a fitting part 30 having an uneven shape for fitting is formed at the lower end of the upper insulating material 33 and the upper end of the side insulating material 32, and the fitting part 30 is formed by the overlapping region R3 of the tape 4. Covered.
　具体的には、テープ４は、嵌合部３０の手前の位置を開始位置Ｐ１とし、開始位置Ｐ１から貼付が開始される。そして、テープ４は、嵌合部３０を被覆して、隙間Ｇと平行に周方向に巻き付けられ、再度嵌合部３０を被覆し、終了位置Ｐ２にて貼付が終了される。なお、重複領域Ｒ３は、１本のテープ４の開始部分と終了部分を重ねることで形成されるものに限定されない。例えば、テープ４にてタンク本体２の全周の隙間Ｇを覆った後、切断したテープ４を嵌合部３０に重ねて貼付して重複領域Ｒ３を形成してもよい。 Specifically, the tape 4 sets the position in front of the fitting part 30 as the starting position P1, and the pasting is started from the starting position P1. Then, the tape 4 covers the fitting part 30 and is wound in the circumferential direction parallel to the gap G, and again covers the fitting part 30, and the pasting is completed at the end position P2. Note that the overlapping region R3 is not limited to one formed by overlapping the start and end portions of one tape 4. For example, after covering the gap G around the entire circumference of the tank body 2 with the tape 4, the cut tape 4 may be pasted over the fitting portion 30 to form the overlapping region R3.
　本実施の形態によれば、断熱材間の嵌合部３０によって事前に想定した以上のシワが発生した場合も、テープ４を重ねて貼付することで、発生したシワを重ねたテープ４で覆うことができる。これにより、テープ４の長辺方向において、隣接する一方の断熱材とテープ４、及び他方の断熱材とテープ４をそれぞれ連続して密着させることができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。 According to the present embodiment, even if more wrinkles than expected occur due to the fitting portion 30 between the heat insulating materials, the tapes 4 are overlapped and pasted to cover the generated wrinkles with the overlapped tape 4. be able to. Thereby, in the long side direction of the tape 4, one of the adjacent heat insulating materials and the tape 4 and the other heat insulating material and the tape 4 can be brought into continuous and close contact with each other. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
　実施の形態７．
　実施の形態７について説明する。図９は、実施の形態７に係る貯湯タンク１Ｂの模式図である。実施の形態７は、断熱材の構成において実施の形態６と相違する。実施の形態７における貯湯タンク１Ｂのその他の構成は実施の形態６と同じであり、実施の形態６との相違点を中心に説明する。 Embodiment 7.
Embodiment 7 will be described. FIG. 9 is a schematic diagram of a hot water storage tank 1B according to the seventh embodiment. Embodiment 7 differs from Embodiment 6 in the structure of the heat insulating material. The rest of the configuration of the hot water storage tank 1B in the seventh embodiment is the same as that in the sixth embodiment, and the differences from the sixth embodiment will be mainly described.
　図９に示すように、本実施の形態の上部断熱材３３は、テープ４の貼付位置を示すガイド部３５を有する。ガイド部３５は、微少な凹部又は凸部により形成される。図９の例では、上部断熱材３３の嵌合部３０の手前の開始位置Ｐ１から終了位置Ｐ２までの間に、テープ４の長辺方向と平行に複数の矩形の凸部からなるガイド部３５が形成されている。作業者は、テープ４の短辺方向の上端をガイド部３５に合わせて貼付を開始し、タンク本体２の外周を一周させ、ガイド部３５が示す終了位置Ｐ２までテープ４の貼付を行う。 As shown in FIG. 9, the upper heat insulating material 33 of this embodiment has a guide portion 35 that indicates the position where the tape 4 is attached. The guide portion 35 is formed by a minute recess or protrusion. In the example of FIG. 9, a guide portion 35 consisting of a plurality of rectangular convex portions parallel to the long side direction of the tape 4 is located between the start position P1 in front of the fitting portion 30 of the upper heat insulating material 33 and the end position P2. is formed. The operator starts pasting the tape 4 by aligning the upper end of the tape 4 in the short side direction with the guide part 35, wraps around the outer circumference of the tank body 2, and continues pasting the tape 4 until it reaches the end position P2 indicated by the guide part 35.
　本実施の形態によれば、嵌合部３０を被覆する重複領域Ｒ３を設けつつ、テープ４を容易に、且つ適切な位置に貼付することができる。その結果、タンク本体２の表面から断熱材外部への対流の発生が妨げられ、タンク本体２の放熱を抑制することができる。 According to this embodiment, the tape 4 can be easily attached to an appropriate position while providing the overlapping region R3 that covers the fitting part 30. As a result, generation of convection from the surface of the tank body 2 to the outside of the heat insulating material is prevented, and heat radiation from the tank body 2 can be suppressed.
　なお、ガイド部３５の構成は、図９の例に限定されるものではない。例えば、ガイド部３５は、周方向に連続的に配置されてもよいし、周方向に断続的に複数配置されてもよい。また、ガイド部３５は、凹部又は凸部により形成されるものに限定されず、印刷等によって形成されてもよい。また、図９では、上部断熱材３３がガイド部３５を備える構成としたが、隣接する２つの断熱材の何れか一方、又は両方がガイド部３５を備えてもよい。 Note that the configuration of the guide portion 35 is not limited to the example shown in FIG. 9. For example, the guide portions 35 may be arranged continuously in the circumferential direction, or a plurality of guide portions 35 may be arranged intermittently in the circumferential direction. Further, the guide portion 35 is not limited to being formed by a concave portion or a convex portion, and may be formed by printing or the like. Further, in FIG. 9, the upper heat insulating material 33 is configured to include the guide portion 35, but either one or both of the two adjacent heat insulating materials may be provided with the guide portion 35.
　また、図９の例では、ガイド部３５がテープ４の貼付位置の外側に配置される構成としたが、ガイド部３５はテープ４の貼付位置の内側に配置されてもよい。さらに、嵌合部３０の一部をガイド部３５としてもよい。この場合は、嵌合部３０の上端の線をガイド部３５とし、当該線とテープ４の短辺方向の上端とを合わせてテープ４が貼付される。 Furthermore, in the example of FIG. 9, the guide portion 35 is arranged outside the tape 4 application position, but the guide portion 35 may be arranged inside the tape 4 application position. Furthermore, a part of the fitting part 30 may be used as the guide part 35. In this case, the line at the upper end of the fitting part 30 is used as the guide part 35, and the tape 4 is pasted with the line and the upper end of the tape 4 in the short side direction aligned.
　以上が本開示の実施の形態の説明であるが、上記の実施の形態の構成に限定されるものではなく、その技術的思想の範囲内で様々な変形又は組み合わせが可能である。例えば、実施の形態６又は７においては、実施の形態１～５の何れのテープ４、４Ａ～４Ｃを用いてもよい。また、実施の形態１～５の構成において、実施の形態７のガイド部３５を設けてもよい。 The above is a description of the embodiment of the present disclosure, but the structure is not limited to the embodiment described above, and various modifications or combinations are possible within the scope of the technical idea. For example, in the sixth or seventh embodiment, any of the tapes 4, 4A to 4C of the first to fifth embodiments may be used. Further, in the configurations of Embodiments 1 to 5, the guide portion 35 of Embodiment 7 may be provided.
　また、断熱材の材料として発泡ポリスチレンを用いる場合を例としたが、発泡ポリプロピレン、発泡ウレタン、ポリエチレン、ゴム、又はポリマー等を用いた発泡体などを用いてもよい。 Further, although the case where foamed polystyrene is used as the material of the heat insulating material is given as an example, foams made of foamed polypropylene, foamed urethane, polyethylene, rubber, polymer, etc. may also be used.
　また、タンク本体２を覆う複数の断熱材は、下部断熱材３１、側部断熱材３２、及び上部断熱材３３の３つに限定されない。例えば、下部断熱材３１、側部断熱材３２、及び上部断熱材３３の少なくとも何れかを、上下方向、前後方向、又は左右方向にさらに分割してもよい。これにより、組み立て性、保管性、及び歩留まりが向上する。又は、タンク本体２を覆う複数の断熱材は、下部断熱材３１、及び上部断熱材３３の２つであってもよい。又は、タンク本体２を覆う複数の断熱材は、貯湯タンク１の前半分を覆う前部断熱材、及び貯湯タンク１の後半分を覆う後部断熱材の２つであってもよい。 Furthermore, the plurality of heat insulating materials that cover the tank body 2 are not limited to the three, the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33. For example, at least one of the lower heat insulating material 31, the side heat insulating material 32, and the upper heat insulating material 33 may be further divided in the vertical direction, the front-back direction, or the left-right direction. This improves assembly, storage, and yield. Alternatively, the plurality of heat insulating materials that cover the tank body 2 may be two, the lower heat insulating material 31 and the upper heat insulating material 33. Alternatively, the plurality of heat insulating materials covering the tank body 2 may be two: a front heat insulating material covering the front half of the hot water storage tank 1 and a rear heat insulating material covering the rear half of the hot water storage tank 1.
　さらに、テープ４は、タンク本体２の周方向に沿って貼付されるものに限定されず、断熱材間の隙間Ｇを被覆するために、垂直方向又は斜め方向に貼付されてもよい。 Further, the tape 4 is not limited to being attached along the circumferential direction of the tank body 2, but may be attached vertically or diagonally in order to cover the gap G between the heat insulating materials.
　１、１Ａ、１Ｂ　貯湯タンク、２　タンク本体、４、４Ａ、４Ｂ、４Ｃ　テープ、９　加熱装置、２１　底面、２２　側面、２３　天面、３０　嵌合部、３１　下部断熱材、３２　側部断熱材、３３　上部断熱材、３５　ガイド部、４１　粘着層、５１ａ、５１ｂ、５１ｃ、５１ｄ　取り出し口、５２ａ　底部配管、５２ｂ　水供給配管、５２ｃ　上部配管、５２ｄ　給湯配管、５３ａ、５３ｂ、５３ｃ、５３ｄ　挿通孔、３１２、３２２　上端面、３２１、３３１　下端面。 1, 1A, 1B hot water storage tank, 2 tank body, 4, 4A, 4B, 4C tape, 9 heating device, 21 bottom, 22 side, 23 top, 30 fitting part, 31 lower insulation material, 32 side insulation material , 33 Upper insulation material, 35 Guide part, 41 Adhesive layer, 51a, 51b, 51c, 51d Outlet, 52a Bottom piping, 52b Water supply piping, 52c Upper piping, 52d Hot water supply piping, 53a, 53b, 53c, 53d Insertion hole , 312, 322 upper end surface, 321, 331 lower end surface.

Claims (10)

  1. 　液体を貯留するタンク本体と、
    　前記タンク本体を覆う複数の断熱材と、
    　前記複数の断熱材のうち、隣接する断熱材の間の隙間を被覆するテープと、を備え、
    　前記テープは、
    　前記隣接する断熱材の端と重なるように貼付され、
    　前記テープの長辺方向において、前記隣接する断熱材の一方と前記テープ、及び前記隣接する断熱材の他方と前記テープが、それぞれ連続して密着している貯湯タンク。     A tank body that stores liquid,
    a plurality of heat insulating materials covering the tank body;
    A tape that covers a gap between adjacent insulation materials among the plurality of insulation materials,
    The tape is
    affixed so as to overlap the edge of the adjacent heat insulating material,
    A hot water storage tank in which one of the adjacent heat insulating materials and the tape and the other of the adjacent heat insulating materials and the tape are in continuous and close contact with each other in the long side direction of the tape.
  2. 　前記複数の断熱材は、
    　前記タンク本体の底面を覆う下部断熱材と、
    　前記タンク本体の側面を覆う側部断熱材と、
    　前記タンク本体の天面を覆う上部断熱材と、からなり、
    　前記隣接する断熱材は、前記下部断熱材と前記側部断熱材、又は前記上部断熱材と前記側部断熱材である請求項１に記載の貯湯タンク。     The plurality of insulation materials are
    a lower insulation material covering the bottom surface of the tank body;
    a side insulation material that covers a side surface of the tank body;
    an upper insulating material that covers the top surface of the tank body;
    The hot water storage tank according to claim 1, wherein the adjacent heat insulating materials are the lower heat insulating material and the side heat insulating material, or the upper heat insulating material and the side heat insulating material.
  3. 　前記テープの短辺方向の幅は前記隙間の幅の３倍以上である請求項１又は２に記載の貯湯タンク。 The hot water storage tank according to claim 1 or 2, wherein the width of the tape in the short side direction is three times or more the width of the gap.
  4. 　前記テープは、柔軟性を有する材質で構成される、又は薄く構成される請求項１～３の何れか一項に記載の貯湯タンク。 The hot water storage tank according to any one of claims 1 to 3, wherein the tape is made of a flexible material or thin.
  5. 　前記テープの短辺方向の両端に粘着層が設けられており、
    　前記テープの短辺方向の中央に前記粘着層が設けられていない請求項１～４の何れか一項に記載の貯湯タンク。     Adhesive layers are provided on both ends of the tape in the short side direction,
    The hot water storage tank according to any one of claims 1 to 4, wherein the adhesive layer is not provided at the center of the tape in the short side direction.
  6. 　前記テープは、伸張性を有する材質で構成される請求項１～５の何れか一項に記載の貯湯タンク。 The hot water tank according to any one of claims 1 to 5, wherein the tape is made of a stretchable material.
  7. 　前記テープは、熱収縮性を有する材質で構成される請求項１～６の何れか一項に記載の貯湯タンク。 The hot water storage tank according to any one of claims 1 to 6, wherein the tape is made of a heat-shrinkable material.
  8. 　前記テープは、前記テープが重ねて貼付された重複領域を有する請求項１～７の何れか一項に記載の貯湯タンク。 The hot water storage tank according to any one of claims 1 to 7, wherein the tape has an overlapping area where the tapes are applied in an overlapping manner.
  9. 　前記複数の断熱材は、前記隣接する断熱材を嵌合するための嵌合部を有し、
    　前記重複領域は、前記嵌合部を被覆する請求項８に記載の貯湯タンク。     The plurality of heat insulating materials have fitting portions for fitting the adjacent heat insulating materials,
    The hot water storage tank according to claim 8, wherein the overlapping region covers the fitting portion.
  10. 　前記隣接する断熱材の少なくとも何れか一方は、前記テープの貼付位置を示すガイド部を有する請求項１～９の何れか一項に記載の貯湯タンク。 The hot water storage tank according to any one of claims 1 to 9, wherein at least one of the adjacent heat insulating materials has a guide portion that indicates a position to which the tape is attached.
PCT/JP2022/017360 2022-04-08 2022-04-08 Hot water storage tank WO2023195156A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/017360 WO2023195156A1 (en) 2022-04-08 2022-04-08 Hot water storage tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/017360 WO2023195156A1 (en) 2022-04-08 2022-04-08 Hot water storage tank

Publications (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009299760A (en) * 2008-06-12 2009-12-24 Imae Kogyo Kk Thermal insulation device of heat apparatus
JP2015108470A (en) * 2013-12-04 2015-06-11 三菱電機株式会社 Storage type water heater
KR20180072957A (en) * 2016-12-22 2018-07-02 한국지역난방공사 Thermal insulator of secondary side pipe for district heating for preventing heat loss
US20180292107A1 (en) * 2014-11-03 2018-10-11 Professional Trade Manufacturing, LLC Insulating Shell for 2.1 Gallon Thermal Expansion Tanks for Potable Water Systems
JP2020176758A (en) * 2019-04-17 2020-10-29 三菱電機株式会社 Hot water storage type water heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009299760A (en) * 2008-06-12 2009-12-24 Imae Kogyo Kk Thermal insulation device of heat apparatus
JP2015108470A (en) * 2013-12-04 2015-06-11 三菱電機株式会社 Storage type water heater
US20180292107A1 (en) * 2014-11-03 2018-10-11 Professional Trade Manufacturing, LLC Insulating Shell for 2.1 Gallon Thermal Expansion Tanks for Potable Water Systems
KR20180072957A (en) * 2016-12-22 2018-07-02 한국지역난방공사 Thermal insulator of secondary side pipe for district heating for preventing heat loss
JP2020176758A (en) * 2019-04-17 2020-10-29 三菱電機株式会社 Hot water storage type water heater

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