WO2021210190A1 - Resin molding mold, hot-water storage tank unit manufacturing method, and hot-water storage tank unit - Google Patents

Resin molding mold, hot-water storage tank unit manufacturing method, and hot-water storage tank unit Download PDF

Info

Publication number
WO2021210190A1
WO2021210190A1 PCT/JP2020/024952 JP2020024952W WO2021210190A1 WO 2021210190 A1 WO2021210190 A1 WO 2021210190A1 JP 2020024952 W JP2020024952 W JP 2020024952W WO 2021210190 A1 WO2021210190 A1 WO 2021210190A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat insulating
water storage
storage tank
insulating member
hot water
Prior art date
Application number
PCT/JP2020/024952
Other languages
French (fr)
Japanese (ja)
Inventor
俊輔 外薗
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 JP2022515187A priority Critical patent/JP7380852B2/en
Priority to DE112020007070.0T priority patent/DE112020007070T5/en
Publication of WO2021210190A1 publication Critical patent/WO2021210190A1/en
Priority to JP2023111167A priority patent/JP2023123827A/en

Links

Images

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
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/182—Insulation
    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0015—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • 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 resin molding die, a method for manufacturing a hot water storage tank unit using the resin molding die, and a hot water storage tank unit.
  • the heat insulating member used for the hot water storage tank unit of the hot water storage type water heater is formed by being divided into a plurality of parts having a shape according to the outer shape of the hot water storage tank, and is attached around the hot water storage tank.
  • the heat insulating member is formed of a foamed heat insulating material such as rigid polyurethane foam or styrofoam, and is foam-molded using a resin molding die composed of an upper mold and a lower mold (see, for example, Patent Document 1).
  • the present disclosure has been made in order to solve the above-mentioned problems, and the resin material can be spread over the entire cavity of the resin molding die, and the resin molding die and hot water storage with improved moldability of the heat insulating member.
  • the purpose is to obtain a tank unit.
  • the resin molding die according to the present disclosure has a lower mold having a concave portion and a first outer edge portion which is an outer edge portion of the concave portion, and a convex portion which can be accommodated in the concave portion and a second outer edge portion which is an outer edge portion of the convex portion.
  • It consists of an upper mold and is a resin molding mold for foam molding a heat insulating resin member.
  • a convex portion is accommodated in the concave portion to form a cavity.
  • a plurality of air vents where the first outer edge portion and the second outer edge portion face each other with respect to the space are characterized in that the uppermost portion of the cavity and the outside of the resin molding die communicate with each other.
  • the hot water storage tank unit is a hot water storage tank unit including a hot water storage tank for storing water and a foam heat insulating member that covers the periphery of the hot water storage tank, and the foam heat insulating member is a plurality of divided heat insulating members. It is characterized by having a plurality of burrs protruding toward the opposite side of the hot water storage tank side along the dividing surface of the divided heat insulating members.
  • the resin molding die according to the present disclosure has an effect that the moldability in foam molding of a heat insulating member can be improved.
  • the hot water storage tank unit according to the present disclosure has an effect that the heat insulating performance of the entire hot water storage tank unit can be improved by improving the moldability of the heat insulating member.
  • FIG. It is a perspective view which shows the hot water storage type water heater provided with the hot water storage tank unit of Embodiment 1.
  • FIG. It is a circuit diagram of the hot water storage type water heater provided with the hot water storage tank unit of Embodiment 1.
  • FIG. It is a perspective view which shows the hot water storage tank unit of Embodiment 1.
  • FIG. It is sectional drawing which shows the hot water storage tank unit of Embodiment 1.
  • FIG. It is a perspective view which shows the foam insulation member of the hot water storage tank unit of Embodiment 1.
  • FIG. It is sectional drawing which shows the foam insulation member of the hot water storage tank unit of Embodiment 1.
  • FIG. It is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 1.
  • FIG. It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 1.
  • FIG. It is a perspective view for demonstrating the manufacturing method of the hot water storage tank unit of Embodiment 1.
  • FIG. It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the front body heat insulating member of Embodiment 1.
  • FIG. It is the schematic which shows the front body part heat insulating member molded by using the resin molding die of Embodiment 1.
  • FIG. It is a top view which shows the resin molding mold for molding the upper heat insulating member of Embodiment 1.
  • FIG. It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the upper heat insulating member of Embodiment 1.
  • FIG. It is the schematic which shows the upper heat insulating member molded by using the resin molding die of Embodiment 1.
  • FIG. It is a perspective view which shows the modification of the foam insulation member of the hot water storage tank unit of Embodiment 1.
  • FIG. It is a top view which shows the modification of the resin molding die for molding the front body heat insulating member of Embodiment 1.
  • FIG. It is a top view which shows the 1st modification of the resin molding die for molding the upper heat insulating member of Embodiment 1.
  • FIG. 1 It is a top view which shows the 2nd modification of the resin molding die for molding the upper heat insulating member of Embodiment 1.
  • FIG. 2 is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 2.
  • FIG. 2 It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 2.
  • FIG. It is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 3.
  • FIG. 3 It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 3.
  • water means, in principle, liquid water, and may include low-temperature water to high-temperature hot water.
  • Embodiment 1 The resin molding die of the first embodiment, the manufacturing method of the hot water storage tank unit using the resin molding die, and the hot water storage tank unit will be described with reference to FIGS. 1 to 11.
  • FIG. 1 is a perspective view showing a hot water storage type water heater 1000 provided with the hot water storage tank unit 100 of the present embodiment
  • FIG. 2 is a circuit diagram of the hot water storage type water heater 1000.
  • the hot water storage type water heater 1000 includes a heat pump unit 110 as a heating means for heating water, and a hot water storage tank unit 100 for storing and supplying water heated by the heat pump unit 110. And.
  • the heat pump unit 110 and the hot water storage tank unit 100 are connected to each other via a heat pump forward pipe 21 and a heat pump return pipe 22 via electrical wiring (not shown). In FIG. 1, the heat pump forward pipe 21 and the heat pump return pipe 22 are not shown.
  • the hot water storage tank unit 100 includes a hot water storage tank 10 for storing water, a pressure reducing valve 23 as a functional valve for carrying out each function of boiling, hot water supply, hot water filling, etc. by the hot water storage type water heater 1000.
  • a relief valve 24, a mixing valve 25, a switching valve 26, and a check valve 27 are provided.
  • a cold water pipe 28 for supplying water from a water source such as city water is connected to the lower part of the hot water storage tank 10.
  • the water stored in the lower part of the hot water storage tank 10 is sent to the heat pump unit 110 by the heat source pump 29 via the heat pump going pipe 21. Then, the water heated by the heat pump unit 110 using the heat in the atmosphere and having a high temperature is returned to the upper part of the hot water storage tank 10 through the heat pump return pipe 22 and stored.
  • a plurality of temperature sensors 30 for measuring the temperature of water in the hot water storage tank 10 are provided on the outer surface of the hot water storage tank 10 in the vertical direction.
  • a thermistor is used as the temperature sensor 30, for example.
  • the heat pump unit 110 is a heating means that heats the low-temperature water sent from the hot water storage tank 10 to raise the temperature.
  • the heat pump unit 110 is a compressor that compresses a refrigerant such as carbon dioxide (CO 2 ) to make it high temperature and high pressure, and condenses the refrigerant discharged from the compressor and exchanges heat with low temperature water sent from the hot water storage tank 10. It is provided with a condenser that heats water with heat of condensation, a pressure reducing valve that reduces the pressure of the refrigerant from the condenser, and an evaporator that absorbs heat in the atmosphere and evaporates the reduced pressure refrigerant.
  • the internal configuration of the heat pump unit 110 is not shown.
  • the water heated by the heat pump unit 110 and stored in the hot water storage tank 10 is taken out from the upper part of the hot water storage tank 10, sent to the mixing valve 25 through the hot water pipe 31, and from the branch water supply pipe 32 branched from the cold water pipe 28. It is used by mixing water with a mixing valve 25 so as to have a desired temperature, and then supplying hot water from a hot water supply terminal 34 such as a faucet or a shower through a hot water supply pipe 33.
  • FIG. 3 is a perspective view showing the hot water storage tank unit 100
  • FIG. 4 is a cross-sectional view showing the hot water storage tank unit 100.
  • a part of the outer case 50 of the hot water storage tank unit 100 shown in FIG. 1 is omitted, and the inside housed in the outer case 50 is mainly shown.
  • 5 is a perspective view for explaining the foamed heat insulating member 40 of the hot water storage tank unit 100
  • FIG. 6 is a cross-sectional view taken along the line AA of FIG.
  • the hot water storage tank unit 100 includes a foam heat insulating member 40, a foam heat insulating member 40, and a hot water storage tank provided so as to cover the hot water storage tank 10.
  • An outer case 50 for accommodating the 10 and the legs 60 provided below the outer case 50 are further provided.
  • the exterior case 50 houses the hot water storage tank 10 and the foam heat insulating member 40 inside, and is provided for the purpose of designing the device, protecting the hot water storage tank 10, heat insulating, and the like.
  • the outer case 50 is made of, for example, a thin steel plate or a resin having weather resistance and flame retardancy.
  • the outer case 50 is located in front of the hot water storage tank 10 and can be opened and closed for maintenance or the like.
  • a recess plate 52 for connecting pipes two side plates 53 and 54 located on the side of the hot water storage tank 10, a back plate 55 located behind the hot water storage tank 10, and an upper position located above the hot water storage tank 10.
  • the face plate 56 and the bottom plate 57 located below the hot water storage tank 10 form a vertically long box shape with respect to the height direction of the hot water storage tank unit 100.
  • the front plate 51, the dent plate 52, the side plates 53, 54, the back plate 55, the top plate 56, and the bottom plate 57 are joined to each other at necessary points by fitting, bolting, etc., and the outer case 50 is formed. Has been done.
  • the legs 60 are provided with the inner legs provided below the hot water storage tank 10 and the outer legs attached below the bottom plate 57 of the outer case 50 fixedly provided to provide the hot water storage tank 10. I support it.
  • FIG. 3 an example in which three legs 60 are provided is shown.
  • the hot water storage tank 10 has a body plate 11 formed in a cylindrical shape using a material such as stainless steel, and a curved upper curve having a bowl-shaped curvature covering the upper opening of the body plate 11. It is formed by welding three members including a plate 12 and a curved lower curved plate 13 having a bowl-shaped curvature that covers the lower opening of the body plate 11.
  • the upper curved plate 12 and the lower curved plate 13 of the hot water storage tank 10 are provided with joints 12a and 13a for connecting the cold water pipe 28 and the hot water pipe 31.
  • the foam heat insulating member 40 is provided so as to cover the periphery of the hot water storage tank 10, and as shown in FIGS. 4 and 5, the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 43 are provided. It is composed of 44 four divided heat insulating members.
  • the upper heat insulating member 41 and the lower heat insulating member 44 are provided so as to cover the curved upper curved plate 12 and the lower curved plate 13 having a bowl-shaped curvature of the hot water storage tank 10, respectively, and the inner surface shape thereof is bowl-shaped. It has a curved surface. Further, as shown in FIG. 4, the upper heat insulating member 41 and the lower heat insulating member 44 may have a structure in which a part of the hot water storage tank 10 is exposed in order to connect the pipes to the joints 12a and 13a.
  • the front body heat insulating member 42 and the rear body heat insulating member 43 have a cylindrical shape, that is, a cross section formed by the front body heat insulating member 42 and the rear body heat insulating member 43, as shown in FIG. It is formed so as to cover the circular body plate 11 visually, and the BB line is the divided position of the two divided heat insulating members.
  • the front body heat insulating member 42 covers the front side of the hot water storage tank 10
  • the rear body heat insulating member 43 covers the rear side of the hot water storage tank 10.
  • the front and rear of the hot water storage tank 10 are not limited to the directions described in the present embodiment.
  • the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 44 are the divided heat insulating members that come into contact with each other on the divided surface which is the contact surface with the other divided heat insulating members.
  • a plurality of burrs are formed on at least one of them.
  • the divided surface is, for example, the surface at the divided position shown by the line BB in FIG. 6, and in the case of FIG. 6, the front body heat insulating member 42 and the rear body heat insulating member 43 are formed on the surface shown by the line BB. I'm in contact. The details of the burr will be described later when the method for manufacturing the foamed heat insulating member 40 is described.
  • the thickness of the four divided heat insulating members 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower heat insulating member 44 is set in consideration of ease of attachment to the periphery of the hot water storage tank 10. It is preferably formed to be 1 mm or more and 400 mm or less.
  • the upper heat insulating member 41, the front body heat insulating member 42 and the rear body heat insulating member 43 are formed of rigid polyurethane foam, and the lower heat insulating member 44 is formed of styrofoam. Since the rigid polyurethane foam has a low thermal conductivity, particularly excellent heat insulating performance can be obtained by using the foam heat insulating member 40 formed of the rigid polyurethane foam. Further, as described above, since the lower part of the hot water storage tank 10 has a low temperature, the lower heat insulating member 44 does not require as much heat insulating performance as the upper heat insulating member 41, the front body heat insulating member 42, and the rear body heat insulating member 43. In some cases. Therefore, the lower heat insulating member 44 can be stably held in the hot water storage tank 10 by being formed of styrofoam having a higher mechanical strength than the rigid polyurethane foam.
  • the foamed heat insulating member 40 is formed of the rigid polyurethane foam and the expanded polystyrene
  • the present invention is not limited to this, and the entire foam insulating member 40 may be formed of the rigid polyurethane foam, or other It may be formed using a foamed resin material.
  • Polyurethane foam has a cell structure and is classified into flexible polyurethane foam and rigid polyurethane foam.
  • flexible polyurethane foam has a cell shape of open cells with a torn cell membrane, and has a structure that allows heat to escape easily, so it has low heat insulation, and mattresses, automobile seats, etc. that are required to have performance as an elastic body. It is used for.
  • the rigid polyurethane foam is used as a heat insulating material because it has a closed cell cell shape in which the cell film is not broken and is excellent in strength and heat insulating property. Therefore, when polyurethane foam is used as the material of the foam insulation member 40 of the present embodiment, it is limited to rigid polyurethane foam.
  • FIG. 7 is a perspective view showing a resin molding die 500 for molding the front body heat insulating member 42 of the present embodiment
  • FIG. 8 is a plan view showing a resin molding die 500.
  • the resin molding die 500 for molding the front body heat insulating member 42 is composed of a lower die 510 and an upper die 520, and by closing the upper die 520 in the lower die 510, the upper die 520 is closed.
  • the resin material filled in the cavity surrounded by the lower mold 510 and the upper mold 520 can be molded.
  • the lower mold 510 has a recess 512 surrounded by a first outer edge portion 511. More specifically, the recess 512 is a portion recessed from the first outer edge portion 511 of the lower mold 510. Further, the recess 512 is a shape obtained by dividing a substantially cylindrical shape into two in the height direction. The surface forming the recess 512 is not limited to a curved surface or a flat surface, and may have irregularities.
  • the upper mold 520 has a convex portion 522 surrounded by a second outer edge portion 521. More specifically, the convex portion 522 is a portion provided so as to project from the second outer edge portion 521 of the upper die 520. Further, the convex portion 522 is a shape obtained by dividing a substantially cylindrical shape into two in the height direction. When the upper mold 520 is closed to the lower mold 510, the first outer edge portion 511 and the second outer edge portion 521 come into contact with each other, and when the convex portion 522 is accommodated in the concave portion 512, the concave portion 512 and the convex portion 522 become A cavity 501 is formed between them.
  • the surface forming the convex portion 522 is not limited to a curved surface or a flat surface, and may have irregularities.
  • the cavity 501 will be described in detail. As shown in the cross-sectional view in FIG. 10, the cavity 501 is a region surrounded by the lower mold 510 and the upper mold 520 in the recess 512 of the lower mold 510. That is, the cavity 501 is formed only in the recess 512 of the lower die 510, and is not formed on the upper die 520 side. Then, at the uppermost position of the cavity 501, an air vent extending in a horizontal direction perpendicular to the vertical direction, which is the direction in which gravity acts, and extending in a direction parallel to the surfaces of the first outer edge portion 511 and the second outer edge portion 521. A 502 is provided, and an air vent 502 communicates the uppermost portion of the cavity 501 with the outside of the resin molding die 500.
  • the first outer edge portion 511 of the lower mold 510 and the second outer edge portion 521 of the upper mold 520 are portions that face each other when the upper mold 520 is closed to the lower mold 510, and a part of the upper mold 510 is in contact with the lower mold 510.
  • a plurality of recessed surfaces 513 and 523 that function as air vents are formed at positions facing each other at positions facing each other with the upper die 520 and the upper die 520 at intervals.
  • FIG. 8 (A) and a plan view of the upper die 520 and FIG. 8 (B) a plan view of the lower die 510, the recessed surfaces 513 and 523 have the same width and are adjacent to each other. The distances between the recessed surfaces 513 and 523 are the same.
  • the air vent 502 will be described in detail.
  • the air vent 502 when the upper mold 520 is closed to the lower mold 510, the first outer edge portion 511 and the second outer edge portion face each other through the space provided by the recessed surfaces 513 and 523. It is formed at the uppermost position of the cavity 501. That is, a plurality of air vents 502 are formed by a plurality of recessed surfaces 513 and 523, and each has an equal width.
  • the air vent 502 communicates the uppermost portion of the cavity 501 with the outside of the resin molding die 500. Therefore, the air vent 502 releases the gas existing in the cavity 501 of the resin molding die 500 to the outside of the resin molding die 500. Further, as shown in FIG.
  • the cavity 501 formed in the recess 512 of the lower mold 510 is rectangular in a plan view, and is recessed at the four corners of the rectangle shown by the broken line in FIG. 8 (B). Since the surface 513 is provided, an air vent 502 that communicates the rectangular corner portion with the outside of the resin molding die 500 is formed when the upper die 520 is closed to the lower die 510.
  • FIG. 12 is a plan view showing a resin molding die 600 for molding the upper heat insulating member 41 of the present embodiment.
  • the resin molding mold 600 for molding the upper heat insulating member 41 includes an upper mold 620 shown in FIG. 12 (A) and a lower mold 610 shown in FIG. 12 (B), and the lower mold 610 and the upper mold 620 are formed. By closing, the resin material filled in the cavity surrounded by the lower mold 610 and the upper mold 620 can be molded.
  • the lower mold 610 has a recess 612 surrounded by a first outer edge portion 611. More specifically, the recess 612 is a portion recessed from the first outer edge portion 611 of the lower mold 610. Further, the concave portion 612 has a bowl-shaped shape that is substantially circular in a plan view. The surface forming the recess 612 is not limited to a curved surface or a flat surface, and may have irregularities.
  • the upper mold 620 has a convex portion 622 surrounded by a second outer edge portion 621. More specifically, the convex portion 622 is a portion provided so as to project from the second outer edge portion 621 of the upper die 620. Further, the convex portion 622 has a substantially circular shape in a plan view and has a curved surface shape.
  • the concave portion 612 and the convex portion 622 become A cavity 601 is formed between them.
  • the surface forming the convex portion 622 is not limited to a curved surface or a flat surface, and may have irregularities.
  • the cavity 601 will be described in detail. As shown in the cross-sectional view in FIG. 13, the cavity 601 is a region surrounded by the lower mold 610 and the upper mold 620 in the recess 612 of the lower mold 610. That is, the cavity 601 is formed only in the recess 612 of the lower mold 610, and is not formed on the upper mold 620 side. Then, at the uppermost position of the cavity 601, an air vent extending in a horizontal direction perpendicular to the vertical direction, which is the direction in which gravity acts, and extending in a direction parallel to the surfaces of the first outer edge portion 611 and the second outer edge portion 621. A 602 is provided, and an air vent 602 communicates the uppermost portion of the cavity 601 with the outside of the resin molding die 600.
  • the first outer edge portion 611 of the lower mold 610 and the second outer edge portion 621 of the upper mold 620 are portions that face each other when the upper mold 620 is closed to the lower mold 610, and a part of the upper mold 610 is in contact with the lower mold 610.
  • a plurality of recessed surfaces 613 and 623 that function as air vents are formed at positions facing each other at positions facing each other with the upper die 620 and the upper die 620 at intervals. As shown in FIG. 12, the recessed surfaces 613 and 623 have the same width, respectively, and the distances between the recessed surfaces 613 and 623 adjacent to each other are the same.
  • the air vent 602 is a portion where the first outer edge portion 611 and the second outer edge portion 621 face each other through the space provided by the recessed surfaces 613 and 623 when the upper mold 620 is closed to the lower mold 610. It is formed at the uppermost position of the cavity 601. That is, a plurality of air vents 602 are formed by a plurality of recessed surfaces 613 and 623, and each has an equal width.
  • the air vent 602 communicates the uppermost portion of the cavity 601 with the outside of the resin molding die 600. Therefore, the air vent 602 releases the gas existing in the cavity 601 of the resin molding die 600 to the outside of the resin molding die 600.
  • the hot water storage tank 10 In the method of manufacturing the hot water storage tank unit 100, first, the hot water storage tank 10, the outer case 50 for accommodating the hot water storage tank 10, and the resin molding dies 500 and 600 for forming the foam insulation member 40 are prepared.
  • the hot water storage tank 10 has the above-mentioned structure.
  • the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 44, which form the foam heat insulating member 40, are foam molded.
  • FIG. 9 is a perspective view for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 500
  • FIG. 10 is for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 500. It is a cross-sectional view of.
  • FIG. 11 is a schematic view showing a front body heat insulating member 42 formed by using the resin molding die 500.
  • a resin molding die 500 is prepared, and while moving the injection head 900 for injecting the resin as shown by an arrow, the resin which is a liquid mixture is contained in the recess 512 of the lower die 510. Inject the material.
  • overpacking that is, overfilling is performed in which a resin material is filled in an amount larger than the required amount obtained by multiplying the volume of the product shape by the freeform density of the resin material, that is, the density after foaming in a no-load state. ..
  • the upper mold 520 After injecting the resin material into the recess 512 of the lower mold 510, the upper mold 520 is closed to the lower mold 510 and pressure is applied. Then, as shown in FIG. 10, the resin material 400 is foamed and filled in the cavity 501 between the upper mold 520 and the lower mold 510. At this time, the gas existing in the cavity 501 is released from the air vent 502 to the outside of the resin molding die 500 as the resin material 400 foams and is filled from the lower side to the upper side of the cavity 501. Will be done. Since the resin material 400 is overfilled, the entire inside of the cavity 501 is filled, and then the air vent 502 formed by the upper die 520, the lower die 510, and the recessed surfaces 513 and 523 is also filled and cured. ..
  • the removed front body heat insulating member 42 has a plurality of burrs 42b made of a resin material filled in the air vent 502 of the resin molding die 500, as shown in the schematic view in FIG. That is, the front body heat insulating member 42 has a plurality of burrs 42b on the divided surface 42a in contact with the rear body heat insulating member 43. Further, since the air vent 502 has the same width, the plurality of burrs 42b also have the same width W.
  • the thickness H of the burr 42b shown in FIG. 10 is, for example, 1 mm or more and 20 mm or less.
  • burrs 42b cover the periphery of the hot water storage tank 10 with each divided heat insulating member, a part of the burr 42b projects parallel to the opposite side of the hot water storage tank 10 along the divided surface 42a of the front body heat insulating member 42. It is a part formed by.
  • the rear body heat insulating member 43 can be foam-molded by a resin molding die having the same structure as the resin molding die 500.
  • the rear body heat insulating member 43 also has a plurality of burrs formed on the opposite side of the hot water storage tank 10 in parallel along the dividing surface in contact with the front body heat insulating member 42, similarly to the front body heat insulating member 42.
  • the burr 42b formed on the split surface 42a of the front body heat insulating member 42 and the burr formed on the split surface of the rear body heat insulating member 43 are arranged so as to come into contact with each other.
  • the hot water storage tank 10 can be covered by combining the divided surfaces.
  • the positions of the air vents are alternately provided in the respective resin molding dies. Therefore, a structure in which burrs are alternately formed when attached to the hot water storage tank may be used.
  • FIG. 13 is a cross-sectional view for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 600.
  • FIG. 14 is a schematic view showing an upper heat insulating member 41 molded by using the resin molding die 600.
  • a resin molding mold 600 is prepared, and a resin material that is a liquid mixture is injected into the recess 612 of the lower mold 610 using an injection head for injecting resin.
  • overpacking that is, overfilling is performed in which a resin material is filled in an amount larger than the required amount obtained by multiplying the volume of the product shape by the freeform density of the resin material, that is, the density after foaming in a no-load state. ..
  • the upper mold 620 is closed to the lower mold 610 and pressure is applied. Then, as shown in FIG. 13, the resin material 400 is foamed and filled in the cavity 601 between the upper mold 620 and the lower mold 610. At this time, the gas existing in the cavity 601 is released from the air vent 602 to the outside of the resin molding die 600 as the resin material 400 foams and is filled from the lower side to the upper side of the cavity 601. Will be done. Since the resin material 400 is overfilled, the entire inside of the cavity 601 is filled, and then the air vent 602 formed by the upper die 620, the lower die 610, and the recessed surfaces 613 and 623 is also filled and cured. ..
  • the removed upper heat insulating member 41 has a plurality of burrs 41b made of a resin material filled in the air vent 602 of the resin molding die 600, as shown in the schematic view in FIG. That is, the upper heat insulating member 41 has a plurality of burrs 41b on the divided surface 41a in contact with the front body heat insulating member 42 and the rear body heat insulating member 43. Further, since the air vent 602 has the same width, the plurality of burrs 41b also have the same width.
  • the thickness of the burr 41b is, for example, 1 mm or more and 20 mm or less.
  • burrs 41b cover the periphery of the hot water storage tank 10 with each divided heat insulating member, a part of the burr 41b is formed so as to project parallel to the opposite side of the hot water storage tank 10 along the divided surface 41a of the upper heat insulating member 41. It is the part that was done.
  • the divided surface in contact with the front body heat insulating member 42 and the rear body heat insulating member 43 is provided for alignment with the front body heat insulating member 42 and the rear body heat insulating member 43.
  • a protruding portion may be formed in which a part of the front body heat insulating member 42 or the rear body heat insulating member 43 projects. Then, a part of the divided surface of the front body heat insulating member 42 or the rear body heat insulating member 43 corresponding to the protruding portion is formed by being depressed, so that they are engaged with each other and the alignment is facilitated. It should be noted that this protruding portion is for facilitating the alignment between the divided heat insulating members, and is formed so as to protrude from the thickness of the burr formed on the divided surface.
  • the lower heat insulating member 44 can be foam-molded by a resin molding die having the same structure as the resin molding die 600. Similar to the upper heat insulating member 41, the lower heat insulating member 44 also has a plurality of burrs formed on the opposite side of the hot water storage tank 10 in parallel along the dividing surface in contact with the front body heat insulating member 42 and the rear body heat insulating member 43. Have.
  • each divided heat insulating member may be cut with the root portion left, if necessary. By doing so, the assemblability of the divided foam heat insulating member 40 can be ensured, and the burr fracture due to contact with other parts can be reduced, so that the hot water storage tank unit 100 with improved heat insulating properties can be obtained. It becomes possible.
  • a foam heat insulating member 40 composed of an upper heat insulating member 41, a front body heat insulating member 42, a rear body heat insulating member 43, and a lower body heat insulating member 44 is formed around the hot water storage tank 10. Install. At this time, the divided surface 42a of the front body heat insulating member 42 and the divided surface of the rear body heat insulating member 43 are aligned. Further, the upper divided surface of the front body heat insulating member 42 and the rear body heat insulating member 43 and the divided surface of the upper heat insulating member 41 are combined, and the lower part of the front body heat insulating member 42 and the rear body heat insulating member 43 is divided. The surface and the divided surface of the lower heat insulating member 44 are aligned. Then, the hot water storage tank 10 and the foam heat insulating member 40 are housed in the outer case 50. In this way, the hot water storage tank unit 100 is manufactured.
  • the resin molding mold of the present embodiment the manufacturing method of the hot water storage tank unit, and the effect of the hot water storage tank unit will be described.
  • the hot water storage tank unit of the present embodiment has a complicated uneven shape as shown in FIG. 5 on the surface of each divided heat insulating member, and communicates with the uppermost portion of the cavity by using the above-mentioned resin molding die. Since an air vent is formed and the confinement of gas in the cavity can be suppressed, the effect of improving moldability is particularly great.
  • the resin material can reach the position of the divided surface and be molded, it is possible to suppress the formation of a gap at the divided position of the heat insulating member, and the heat insulating performance can be improved. It has the effect of obtaining an improved hot water storage tank unit.
  • the burr formed in the hot water storage tank unit of the present embodiment is characterized in that it extends to the opposite side of the hot water storage tank in parallel with the dividing surface. Therefore, the burr does not interfere with the boundary with the other split heat insulating member, and the effect is that the burr can be easily attached around the hot water storage tank. Further, since the burrs extend in parallel from the divided surface, the contact area is increased by aligning with the burrs formed on the other divided heat insulating members, and the effect of facilitating the attachment is achieved.
  • the cavity 501 is formed in the rectangular recess 512 in a plan view.
  • FIG. There is a concern that gas may be trapped in the four corners, which are the vertices of the rectangle shown by the dotted line in (B). Therefore, in the resin molding die 500 of the present embodiment, air vents 502 communicating with the outside of the resin molding die 500 are formed at the four corners of the rectangular corners, so that the end portion of the divided surface is formed. It has the effect of further improving the moldability in the above.
  • the width of the air vent is the same, the flow of the resin material in the foam molding can be made uniform, and further molding. It has the effect of improving sex.
  • each divided heat insulating member constituting the foamed heat insulating member 40 shown in the present embodiment a large thickness is required and a large amount of resin material is required.
  • the width of the air vent may be increased at the location.
  • the configuration in which the hot water storage tank 10 is covered with the foam heat insulating member 40 to insulate the hot water storage tank 10 has been described, but a vacuum heat insulating material may be further provided to improve the heat insulating performance.
  • FIG. 15 is a perspective view showing the division positions of the heat insulating members of the hot water storage tank unit of each modification of the present embodiment.
  • the foam heat insulating member 40 is composed of four divided heat insulating members, an upper heat insulating member 41, a front body heat insulating member 42, a rear body heat insulating member 43, and a lower body heat insulating member 44.
  • the present invention is not limited to this, and as shown in FIGS. 15 (A) to 15 (D), the divided positions may be changed to form two or more divided pieces.
  • a foam heat insulating member 410 composed of two members, a front heat insulating member 411 and a rear heat insulating member 412, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
  • a foam heat insulating member 420 composed of three members, a front body heat insulating member 421, a rear body heat insulating member 422, and a lower body heat insulating member 423, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
  • a foam heat insulating member 430 composed of three members, an upper heat insulating member 431, a body heat insulating member 432, and a lower heat insulating member 433, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
  • a foam heat insulating member 440 composed of two members, an upper heat insulating member 441 and a lower heat insulating member 442, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
  • the upper heat insulating member 441 is made of rigid polyurethane foam
  • the lower heat insulating member 442 is made of styrofoam, so that the design can be easily changed as needed.
  • the position of the dividing surface is not limited to this. Further, in consideration of manufacturing efficiency, the smaller the number of parts of the split heat insulating member attached to one hot water storage tank 10, the smaller the assembly work man-hours, which is preferable.
  • FIGS. 16 to 18 Each modification of the resin molding die of the first embodiment will be described with reference to FIGS. 16 to 18.
  • the resin molding dies 500 and 600 of the present embodiment the case where the recessed surfaces forming the air vents are uniformly formed on the first outer edge portion and the second outer edge portion has been described, but the present invention is not limited to this.
  • the position where the air vent is provided and the interval thereof may be changed.
  • FIG. 16 is a plan view of the lower mold 510 of a modified example of the resin molding mold 500 forming the front body heat insulating member 42.
  • the plan view of the upper die 520 corresponds to the plan view of the lower die 510 and is omitted.
  • the front body heat insulating member 42 may have an air vent formed at least on the position of the split surface 42a, which is a position in contact with the rear body heat insulating member 43, that is, on the long axis side, and does not have an air vent on the short axis side. Can be. With such a configuration, the divided surface 42a can be molded with better moldability. Even in the case of a resin molding die for molding the rear body heat insulating member 43, an air vent can be provided at the same position.
  • FIG. 17 and 18 are plan views showing a lower mold 610 of a modified example of the resin molding mold 600 forming the upper heat insulating member 41, respectively.
  • the plan view of the upper die 620 corresponds to the plan view of the lower die 610 and is omitted. Since the upper heat insulating member 41 has a dividing surface 41a on the entire outer circumference of the recess 612 in a plan view, an air vent may be provided on the entire outer circumference. Needless to say, the number of the plurality of air vents is not limited to the number shown in FIG. Even in the case of a resin molding die for molding the lower heat insulating member 44, an air vent can be provided at the same position.
  • FIG. 19 is a perspective view showing a resin molding die 500 for molding a front body heat insulating member provided in the hot water storage tank unit of the present embodiment
  • FIG. 20 is a plan view showing a resin molding die 500. be.
  • FIG. 21 is a cross-sectional view for explaining a method of manufacturing a hot water storage tank unit using the resin molding die 500.
  • the resin molding die 500 of the present embodiment further has a flat surface 524 for forming a flat divided surface in the second outer edge portion 521 of the upper die 520. Therefore, it is different from the resin molding mold 500 of the first embodiment. Since the resin molding mold of the present embodiment, the manufacturing method of the hot water storage tank unit using the resin molding mold, and other configurations of the hot water storage tank unit are the same as those of the first embodiment, the following differences are mainly focused on. Explain to.
  • the flat surface 524 is a part of the second outer edge portion 521 of the upper mold 520, and is located on the inner peripheral side of the outer peripheral side where the air vent 502 is formed. That is, as shown in FIG. 21, the flat surface 524 is a portion that forms the upper surface of the cavity 501 when the upper mold 520 is closed to the lower mold 510, and the portion formed in contact with the flat surface 524 is formed. It serves as a dividing surface of the front body heat insulating member 42. Further, the recessed surface 523 provided in the second outer edge portion 521 of the upper mold 520 is provided so as to be recessed from the flat surface 524.
  • the flat surface 524 faces the recess 512 of the lower die 510, while the outer peripheral portion of the second outer edge portion 521 excluding the flat surface 524 is the lower die. It faces the first outer edge portion 511 of 510. Then, the recessed surface 513 provided on the first outer edge portion 511 of the lower mold 510 and the recessed surface 523 provided on the second outer edge portion 521 of the upper mold face each other, so that the air vent is as shown in FIG. A 502 is formed and the top surface of the air vent 502 is located above the top of the cavity 501.
  • the front body heat insulating member 42 formed by using the resin molding die 500 of the present embodiment has a divided surface due to the height difference between the flat surface 524 and the recessed surface 523.
  • the burr may have a step. Even in this case, since the step between the dividing surface and the burr is small, it can be said that the burr is formed along the dividing surface. Since the burrs do not interfere with each other at the boundary between the front body heat insulating member and the rear body heat insulating member, the positions where the air vents are formed in the respective resin molding dies may be alternated. When the thickness H of the burr filling the inside of the 502 is small, it does not matter even if the positions of the air vents are not alternated.
  • the resin molding die 600 for forming the upper heat insulating member described in the first embodiment can also be similarly configured to have a flat surface on the inner peripheral side of the second outer edge portion 621 of the upper die 620. ..
  • the resin molding die of the present embodiment configured as described above, the method for manufacturing the hot water storage tank unit using the resin molding die, and the hot water storage tank unit have the same effects as those of the first embodiment.
  • the divided surface can be formed flat, there is an effect that a heat insulating member having further improved heat insulating performance can be obtained.
  • FIG. 22 is a perspective view showing a resin molding die 500 for molding a front body heat insulating member provided in the hot water storage tank unit of the present embodiment
  • FIG. 23 is a plan view showing a resin molding die 500. be.
  • FIG. 24 is a cross-sectional view for explaining a method of manufacturing a hot water storage tank unit using the resin molding die 500.
  • the resin molding die 500 of the present embodiment does not have a recessed surface 523 at the second outer edge portion 521 of the upper die 520, and thus the resin molding of the first embodiment It is different from the mold 500. Since the resin molding mold of the present embodiment, the manufacturing method of the hot water storage tank unit using the resin molding mold, and other configurations of the hot water storage tank unit are the same as those of the first embodiment, the following differences are mainly focused on. Explain to.
  • the second outer edge portion 521 of the upper mold 520 is a flat surface without unevenness because a concave surface is not formed.
  • the portion corresponding to the flat surface 524 of the second embodiment is shown as a flat surface 524, but there is no step or the like at the boundary thereof.
  • the flat surface 524 is a surface for forming a divided surface, and is located at a position facing the recess 512 of the lower mold 510.
  • the outer peripheral portion of the second outer edge portion 521 excluding the flat surface 524 faces the first outer edge portion 511 of the lower mold 510. Therefore, as shown in FIG. 24, the air vent 502 is caused by the concave surface 513 provided on the first outer edge portion 511 of the lower mold 510 and the flat surface on the outer peripheral side of the second outer edge portion 521 of the upper mold facing each other. Is formed.
  • the resin molding die 600 for forming the upper heat insulating member described in the first embodiment can also have a configuration in which the second outer edge portion 621 of the upper die 620 does not have a recessed surface 623.
  • the resin molding die of the present embodiment configured as described above, the method for manufacturing the hot water storage tank unit using the resin molding die, and the hot water storage tank unit have the same effects as those of the first embodiment.
  • the divided surface can be formed flat, and the burrs are formed parallel to the divided surface, so that the divided heat insulating members can be easily aligned with each other, and the heat insulating member with further improved heat insulating performance can be provided. It produces the effects that can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Fluid Heaters (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Provided are: a resin molding mold with which it is possible to spread a resin material over the entire cavity of the resin molding mold to achieve an enhanced insulation-member moldability; and a hot-water storage tank unit.　A resin molding mold (500) consists of a lower mold (510) having a depression (512), the periphery of which is surrounded by first outer edge sections (511), and an upper mold (520) having a protrusion (522) that can be accommodated in the depression (512) and the periphery of which is surrounded by second outer edge sections (521); and serves to perform foam molding of an insulation member of a hot-water storage tank. The resin molding mold (500) is characterized in that: in the case in which the upper mold (520) is closed with respect to the lower mold (510), a cavity is formed as a result of the protrusion (522) being accommodated in the depression (512); and, furthermore, a plurality of air vents, which are sites at which the first outer edge sections (511) and the second outer edge sections (521) face each other via spaces formed by depressed surfaces (513, 523), establish communication between the top-most section of the cavity and the exterior of the resin molding mold (500).

Description

樹脂成形用金型、貯湯タンクユニットの製造方法及び貯湯タンクユニットResin molding mold, hot water storage tank unit manufacturing method and hot water storage tank unit
　本開示は、樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットに関する。 The present disclosure relates to a resin molding die, a method for manufacturing a hot water storage tank unit using the resin molding die, and a hot water storage tank unit.
　従来、貯湯式給湯器の貯湯タンクユニットに使用される断熱部材は、貯湯タンクの外形に応じた形状の複数の部品に分割して形成され、貯湯タンクの周囲へ取り付けられている。断熱部材は、硬質ポリウレタンフォームや発泡スチロール等の発泡断熱材で形成され、上型と下型とからなる樹脂成形用金型を用いて発泡成形される（例えば、特許文献１参照）。 Conventionally, the heat insulating member used for the hot water storage tank unit of the hot water storage type water heater is formed by being divided into a plurality of parts having a shape according to the outer shape of the hot water storage tank, and is attached around the hot water storage tank. The heat insulating member is formed of a foamed heat insulating material such as rigid polyurethane foam or styrofoam, and is foam-molded using a resin molding die composed of an upper mold and a lower mold (see, for example, Patent Document 1).
特開２００８－１０７０１５号公報Japanese Unexamined Patent Publication No. 2008-107015
　しかしながら、従来の樹脂成形用金型を用いた断熱部材の製造方法では、断熱部材を発泡成形する際に樹脂成形用金型のキャビティの上部に気体が閉じ込められてしまい、樹脂材料がキャビティ全体に広がらず、成形性が劣るという課題があった。 However, in the conventional method for manufacturing a heat insulating member using a resin molding die, gas is trapped in the upper part of the cavity of the resin molding die when the heat insulating member is foam-molded, and the resin material is spread over the entire cavity. There was a problem that it did not spread and the moldability was inferior.
　本開示は、上記した課題を解決するためになされたものであり、樹脂成形用金型のキャビティ全体に樹脂材料が広がることができ、断熱部材の成形性を向上した樹脂成形用金型及び貯湯タンクユニットを得ることを目的とするものである。 The present disclosure has been made in order to solve the above-mentioned problems, and the resin material can be spread over the entire cavity of the resin molding die, and the resin molding die and hot water storage with improved moldability of the heat insulating member. The purpose is to obtain a tank unit.
　本開示に係る樹脂成形用金型は、凹部及び凹部の外縁部である第１外縁部を有する下型と、凹部に収容可能な凸部及び凸部の外縁部である第２外縁部を有する上型とからなり、断熱性の樹脂部材を発泡成形するための樹脂成形用金型であって、下型に上型を閉じた場合に、凹部内に凸部が収容されてキャビティが形成され、さらに、第１外縁部と第２外縁部とが空間を介して対向する箇所である複数のエアベントが、キャビティの最上部と樹脂成形用金型の外部とを連通することを特徴とする。 The resin molding die according to the present disclosure has a lower mold having a concave portion and a first outer edge portion which is an outer edge portion of the concave portion, and a convex portion which can be accommodated in the concave portion and a second outer edge portion which is an outer edge portion of the convex portion. It consists of an upper mold and is a resin molding mold for foam molding a heat insulating resin member. When the upper mold is closed in the lower mold, a convex portion is accommodated in the concave portion to form a cavity. Further, a plurality of air vents where the first outer edge portion and the second outer edge portion face each other with respect to the space are characterized in that the uppermost portion of the cavity and the outside of the resin molding die communicate with each other.
　本開示に係る貯湯タンクユニットは、水を貯留するための貯湯タンクと、貯湯タンクの周囲を覆う発泡断熱部材と、を備えた貯湯タンクユニットであって、発泡断熱部材は、複数の分割断熱部材で構成され、分割断熱部材同士の分割面に沿って貯湯タンク側の反対側へ突出した複数のバリを有することを特徴とする。 The hot water storage tank unit according to the present disclosure is a hot water storage tank unit including a hot water storage tank for storing water and a foam heat insulating member that covers the periphery of the hot water storage tank, and the foam heat insulating member is a plurality of divided heat insulating members. It is characterized by having a plurality of burrs protruding toward the opposite side of the hot water storage tank side along the dividing surface of the divided heat insulating members.
　本開示に係る樹脂成形用金型は、断熱部材の発泡成形における成形性を向上することができるという効果を有する。 The resin molding die according to the present disclosure has an effect that the moldability in foam molding of a heat insulating member can be improved.
　本開示に係る貯湯タンクユニットは、断熱部材の成形性を向上することで、貯湯タンクユニット全体での断熱性能を高めることができるという効果を有する。 The hot water storage tank unit according to the present disclosure has an effect that the heat insulating performance of the entire hot water storage tank unit can be improved by improving the moldability of the heat insulating member.
実施の形態１の貯湯タンクユニットを備えた貯湯式給湯器を示す斜視図である。It is a perspective view which shows the hot water storage type water heater provided with the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットを備えた貯湯式給湯器の回路図である。It is a circuit diagram of the hot water storage type water heater provided with the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットを示す斜視図である。It is a perspective view which shows the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットを示す断面図である。It is sectional drawing which shows the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットの発泡断熱部材を示す斜視図である。It is a perspective view which shows the foam insulation member of the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットの発泡断熱部材を示す断面図である。It is sectional drawing which shows the foam insulation member of the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の前胴部断熱部材を成形するための樹脂成形用金型を示す斜視図である。It is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 1. FIG. 実施の形態１の前胴部断熱部材を成形するための樹脂成形用金型を示す平面図である。It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットの製造方法を説明するための斜視図である。It is a perspective view for demonstrating the manufacturing method of the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の前胴部断熱部材を成形するための樹脂成形用金型を用いた貯湯タンクユニットの製造方法を説明するための断面図である。It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the front body heat insulating member of Embodiment 1. FIG. 実施の形態１の樹脂成形用金型を用いて成形した前胴部断熱部材を示す概略図である。It is the schematic which shows the front body part heat insulating member molded by using the resin molding die of Embodiment 1. FIG. 実施の形態１の上部断熱部材を成形するための樹脂成形用金型を示す平面図である。It is a top view which shows the resin molding mold for molding the upper heat insulating member of Embodiment 1. FIG. 実施の形態１の上部断熱部材を成形するための樹脂成形用金型を用いた貯湯タンクユニットの製造方法を説明するための断面図である。It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the upper heat insulating member of Embodiment 1. FIG. 実施の形態１の樹脂成形用金型を用いて成形した上部断熱部材を示す概略図である。It is the schematic which shows the upper heat insulating member molded by using the resin molding die of Embodiment 1. FIG. 実施の形態１の貯湯タンクユニットの発泡断熱部材の変形例を示す斜視図である。It is a perspective view which shows the modification of the foam insulation member of the hot water storage tank unit of Embodiment 1. FIG. 実施の形態１の前胴部断熱部材を成形するための樹脂成形用金型の変形例を示す平面図である。It is a top view which shows the modification of the resin molding die for molding the front body heat insulating member of Embodiment 1. FIG. 実施の形態１の上部断熱部材を成形するための樹脂成形用金型の第１の変形例を示す平面図である。It is a top view which shows the 1st modification of the resin molding die for molding the upper heat insulating member of Embodiment 1. FIG. 実施の形態１の上部断熱部材を成形するための樹脂成形用金型の第２の変形例を示す平面図である。It is a top view which shows the 2nd modification of the resin molding die for molding the upper heat insulating member of Embodiment 1. FIG. 実施の形態２の前胴部断熱部材を成形するための樹脂成形用金型を示す斜視図である。It is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 2. 実施の形態２の前胴部断熱部材を成形するための樹脂成形用金型を示す平面図である。It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 2. 実施の形態２の前胴部断熱部材を成形するための樹脂成形用金型を用いた貯湯タンクユニットの製造方法を説明するための断面図である。It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the front body heat insulating member of Embodiment 2. FIG. 実施の形態３の前胴部断熱部材を成形するための樹脂成形用金型を示す斜視図である。It is a perspective view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 3. 実施の形態３の前胴部断熱部材を成形するための樹脂成形用金型を示す平面図である。It is a top view which shows the resin molding mold for molding the front body heat insulating member of Embodiment 3. 実施の形態３の前胴部断熱部材を成形するための樹脂成形用金型を用いた貯湯タンクユニットの製造方法を説明するための断面図である。It is sectional drawing for demonstrating the manufacturing method of the hot water storage tank unit using the resin molding die for molding the front body heat insulating member of Embodiment 3. FIG.
　以下、図面に基づいて実施の形態について説明する。なお、以下の図面において同一又は相当する部分には同一の符号を付し、その説明は繰り返さない。また、以下の説明において、「水」との記載は、原則として、液体の水を意味し、低温の水から高温の湯までが含まれ得るものとする。 Hereinafter, embodiments will be described based on the drawings. In the following drawings, the same or corresponding parts are designated by the same reference numerals, and the description thereof will not be repeated. Further, in the following description, the description of "water" means, in principle, liquid water, and may include low-temperature water to high-temperature hot water.
実施の形態１．
　実施の形態１の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットについて、図１から図１１を用いて説明する。 Embodiment 1.
The resin molding die of the first embodiment, the manufacturing method of the hot water storage tank unit using the resin molding die, and the hot water storage tank unit will be described with reference to FIGS. 1 to 11.
　まず、実施の形態１の貯湯タンクユニットを備えた貯湯式給湯器の全体構成について、図１及び図２を用いて説明する。図１は、本実施の形態の貯湯タンクユニット１００を備えた貯湯式給湯器１０００を示す斜視図、図２は、貯湯式給湯器１０００の回路図である。 First, the overall configuration of the hot water storage type water heater provided with the hot water storage tank unit of the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a hot water storage type water heater 1000 provided with the hot water storage tank unit 100 of the present embodiment, and FIG. 2 is a circuit diagram of the hot water storage type water heater 1000.
　貯湯式給湯器１０００は、図１及び図２に示すように、水を加熱する加熱手段としてのヒートポンプユニット１１０と、ヒートポンプユニット１１０により加熱された水を貯留して供給するための貯湯タンクユニット１００とを備える。ヒートポンプユニット１１０と貯湯タンクユニット１００との間は、ヒートポンプ往き配管２１及びヒートポンプ戻り配管２２と、電気配線（図示せず）とを介して接続されている。なお、図１では、ヒートポンプ往き配管２１及びヒートポンプ戻り配管２２の図示を省略している。 As shown in FIGS. 1 and 2, the hot water storage type water heater 1000 includes a heat pump unit 110 as a heating means for heating water, and a hot water storage tank unit 100 for storing and supplying water heated by the heat pump unit 110. And. The heat pump unit 110 and the hot water storage tank unit 100 are connected to each other via a heat pump forward pipe 21 and a heat pump return pipe 22 via electrical wiring (not shown). In FIG. 1, the heat pump forward pipe 21 and the heat pump return pipe 22 are not shown.
　貯湯タンクユニット１００は、図２に示すように、水を貯湯する貯湯タンク１０、貯湯式給湯器１０００による沸き上げ、給湯、湯張り等の各機能を担うための機能弁としての減圧弁２３、逃し弁２４、混合弁２５、切替弁２６、逆止弁２７を備える。貯湯タンク１０の下部には、市水等の水源から水が供給される冷水配管２８が接続されている。 As shown in FIG. 2, the hot water storage tank unit 100 includes a hot water storage tank 10 for storing water, a pressure reducing valve 23 as a functional valve for carrying out each function of boiling, hot water supply, hot water filling, etc. by the hot water storage type water heater 1000. A relief valve 24, a mixing valve 25, a switching valve 26, and a check valve 27 are provided. A cold water pipe 28 for supplying water from a water source such as city water is connected to the lower part of the hot water storage tank 10.
　貯湯タンク１０内の下部に貯留される水は、熱源ポンプ２９によってヒートポンプ往き配管２１を介してヒートポンプユニット１１０に送られる。そして、ヒートポンプユニット１１０で大気中の熱を利用して加熱され高温となった水は、ヒートポンプ戻り配管２２を通って貯湯タンク１０の上部に戻され貯留される。 The water stored in the lower part of the hot water storage tank 10 is sent to the heat pump unit 110 by the heat source pump 29 via the heat pump going pipe 21. Then, the water heated by the heat pump unit 110 using the heat in the atmosphere and having a high temperature is returned to the upper part of the hot water storage tank 10 through the heat pump return pipe 22 and stored.
  貯湯タンク１０内の温度は、下部から上部にかけて高くなるため、貯湯タンク１０内は下部から上部にかけて、低温、中温、高温の温度分布の水が積層して貯留されている。貯湯タンク１０の外面には、鉛直方向に、貯湯タンク１０内の水の温度を測定するための温度センサ３０が複数設けられている。温度センサ３０としては、例えばサーミスタが用いられる。 Since the temperature inside the hot water storage tank 10 rises from the lower part to the upper part, water having a low temperature, medium temperature, and high temperature distribution is stacked and stored in the hot water storage tank 10 from the lower part to the upper part. A plurality of temperature sensors 30 for measuring the temperature of water in the hot water storage tank 10 are provided on the outer surface of the hot water storage tank 10 in the vertical direction. As the temperature sensor 30, for example, a thermistor is used.
　ヒートポンプユニット１１０は、貯湯タンク１０から送られた低温の水を高温にするために加熱する加熱手段である。ヒートポンプユニット１１０は、二酸化炭素（ＣＯ２）等の冷媒を圧縮して高温・高圧にする圧縮機と、圧縮機から吐出された冷媒を凝縮させるとともに貯湯タンク１０から送られる低温の水と熱交換することにより水を凝縮熱で加熱する凝縮器と、凝縮器からの冷媒を減圧する減圧弁と、大気中の熱を吸熱して減圧した冷媒を蒸発させる蒸発器とを備える。なお、ヒートポンプユニット１１０の内部構成については図示を省略する。 The heat pump unit 110 is a heating means that heats the low-temperature water sent from the hot water storage tank 10 to raise the temperature. The heat pump unit 110 is a compressor that compresses a refrigerant such as carbon dioxide (CO 2 ) to make it high temperature and high pressure, and condenses the refrigerant discharged from the compressor and exchanges heat with low temperature water sent from the hot water storage tank 10. It is provided with a condenser that heats water with heat of condensation, a pressure reducing valve that reduces the pressure of the refrigerant from the condenser, and an evaporator that absorbs heat in the atmosphere and evaporates the reduced pressure refrigerant. The internal configuration of the heat pump unit 110 is not shown.
　ヒートポンプユニット１１０で加熱され貯湯タンク１０内に貯留される水は、貯湯タンク１０の上部から取り出され、温水配管３１を通り混合弁２５に送られ、冷水配管２８から分岐した分岐給水管３２からの水と、混合弁２５で所望の温度になるように混合された後、給湯配管３３を通って蛇口やシャワーなどの給湯端末３４から給湯することで使用される。 The water heated by the heat pump unit 110 and stored in the hot water storage tank 10 is taken out from the upper part of the hot water storage tank 10, sent to the mixing valve 25 through the hot water pipe 31, and from the branch water supply pipe 32 branched from the cold water pipe 28. It is used by mixing water with a mixing valve 25 so as to have a desired temperature, and then supplying hot water from a hot water supply terminal 34 such as a faucet or a shower through a hot water supply pipe 33.
　次に、貯湯タンクユニット１００の構造について、図３から図６を用いて説明する。図３は、貯湯タンクユニット１００を示す斜視図、図４は、貯湯タンクユニット１００を示す断面図である。なお、図３では、図１に示す貯湯タンクユニット１００の外装ケース５０の一部を省略して、外装ケース５０に収容される内部を主に示している。また、図５は、貯湯タンクユニット１００の発泡断熱部材４０を説明するための斜視図、図６は図５のＡ－Ａ断面図である。 Next, the structure of the hot water storage tank unit 100 will be described with reference to FIGS. 3 to 6. FIG. 3 is a perspective view showing the hot water storage tank unit 100, and FIG. 4 is a cross-sectional view showing the hot water storage tank unit 100. In addition, in FIG. 3, a part of the outer case 50 of the hot water storage tank unit 100 shown in FIG. 1 is omitted, and the inside housed in the outer case 50 is mainly shown. 5 is a perspective view for explaining the foamed heat insulating member 40 of the hot water storage tank unit 100, and FIG. 6 is a cross-sectional view taken along the line AA of FIG.
　貯湯タンクユニット１００は、図２で説明した貯湯タンク１０（図３では図示を省略する）等の構成に加えて、貯湯タンク１０を覆って設けられる発泡断熱部材４０、発泡断熱部材４０と貯湯タンク１０とを内部に収納する外装ケース５０、及び外装ケース５０の下方に設けられる脚部６０をさらに備える。 In addition to the configuration of the hot water storage tank 10 (not shown in FIG. 3) described with reference to FIG. 2, the hot water storage tank unit 100 includes a foam heat insulating member 40, a foam heat insulating member 40, and a hot water storage tank provided so as to cover the hot water storage tank 10. An outer case 50 for accommodating the 10 and the legs 60 provided below the outer case 50 are further provided.
　外装ケース５０は、内部に貯湯タンク１０及び発泡断熱部材４０を収容し、機器としての意匠性、貯湯タンク１０の保護、及び断熱等を目的に設けられる。外装ケース５０は、例えば、薄い鋼板又は耐侯性及び難燃性を有する樹脂で構成される。 The exterior case 50 houses the hot water storage tank 10 and the foam heat insulating member 40 inside, and is provided for the purpose of designing the device, protecting the hot water storage tank 10, heat insulating, and the like. The outer case 50 is made of, for example, a thin steel plate or a resin having weather resistance and flame retardancy.
　外装ケース５０は、図１に示すように、貯湯タンク１０の前方に位置しメンテナンス等で開閉可能な前面板５１、給水、給湯、ヒートポンプ及び浴槽への往き戻り用の貯湯タンクユニット１００外の外部配管を接続するためのけこみ板５２、貯湯タンク１０の側方に位置する二面の側面板５３、５４、貯湯タンク１０の後方に位置する背面板５５、貯湯タンク１０の上方に位置する上面板５６、及び貯湯タンク１０の下方に位置する底面板５７によって、貯湯タンクユニット１００の高さ方向に対して縦長の箱状に構成されている。前面板５１、けこみ板５２、側面板５３、５４、背面板５５、上面板５６及び底面板５７の各板同士は、必要箇所が嵌合、ボルト締めなどで接合され、外装ケース５０が構成されている。 As shown in FIG. 1, the outer case 50 is located in front of the hot water storage tank 10 and can be opened and closed for maintenance or the like. A recess plate 52 for connecting pipes, two side plates 53 and 54 located on the side of the hot water storage tank 10, a back plate 55 located behind the hot water storage tank 10, and an upper position located above the hot water storage tank 10. The face plate 56 and the bottom plate 57 located below the hot water storage tank 10 form a vertically long box shape with respect to the height direction of the hot water storage tank unit 100. The front plate 51, the dent plate 52, the side plates 53, 54, the back plate 55, the top plate 56, and the bottom plate 57 are joined to each other at necessary points by fitting, bolting, etc., and the outer case 50 is formed. Has been done.
　脚部６０は、外装ケース５０の内部において、貯湯タンク１０の下方に設けられる内部脚と、外装ケース５０の底面板５７の下方に取り付けられる外部脚とが固定されて設けられ、貯湯タンク１０を支持している。本実施の形態では、図３に示すように、脚部６０が３個設けられている例を示す。 Inside the outer case 50, the legs 60 are provided with the inner legs provided below the hot water storage tank 10 and the outer legs attached below the bottom plate 57 of the outer case 50 fixedly provided to provide the hot water storage tank 10. I support it. In this embodiment, as shown in FIG. 3, an example in which three legs 60 are provided is shown.
　貯湯タンク１０は、図４に示すように、ステンレス等の材料を用いて円筒形状に形成された胴板１１と、胴板１１の上部開口を覆う椀状の曲率を持った曲面形状の上部曲板１２と、胴板１１の下部開口を覆う椀状の曲率を持った曲面形状の下部曲板１３とからなる３個の部材を溶接して構成される。貯湯タンク１０の上部曲板１２及び下部曲板１３には、冷水配管２８や温水配管３１を接続するための継ぎ手１２ａ、１３ａが設けられている。 As shown in FIG. 4, the hot water storage tank 10 has a body plate 11 formed in a cylindrical shape using a material such as stainless steel, and a curved upper curve having a bowl-shaped curvature covering the upper opening of the body plate 11. It is formed by welding three members including a plate 12 and a curved lower curved plate 13 having a bowl-shaped curvature that covers the lower opening of the body plate 11. The upper curved plate 12 and the lower curved plate 13 of the hot water storage tank 10 are provided with joints 12a and 13a for connecting the cold water pipe 28 and the hot water pipe 31.
　発泡断熱部材４０は、貯湯タンク１０の周囲を覆って設けられ、図４及び図５に示すように、上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３、及び下部断熱部材４４の４個の分割断熱部材で構成されている。 The foam heat insulating member 40 is provided so as to cover the periphery of the hot water storage tank 10, and as shown in FIGS. 4 and 5, the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 43 are provided. It is composed of 44 four divided heat insulating members.
　上部断熱部材４１及び下部断熱部材４４は、貯湯タンク１０の椀状の曲率を持った曲面形状の上部曲板１２及び下部曲板１３をそれぞれ覆って設けられており、その内面形状は椀状となっており、曲面を呈する。また、上部断熱部材４１及び下部断熱部材４４は、図４に示すように、継ぎ手１２ａ、１３ａに配管を接続するために貯湯タンク１０の一部を露出した構造であっても良い。 The upper heat insulating member 41 and the lower heat insulating member 44 are provided so as to cover the curved upper curved plate 12 and the lower curved plate 13 having a bowl-shaped curvature of the hot water storage tank 10, respectively, and the inner surface shape thereof is bowl-shaped. It has a curved surface. Further, as shown in FIG. 4, the upper heat insulating member 41 and the lower heat insulating member 44 may have a structure in which a part of the hot water storage tank 10 is exposed in order to connect the pipes to the joints 12a and 13a.
　前胴部断熱部材４２及び後胴部断熱部材４３は、図６に図５のＡ－Ａ断面図を示すように、前胴部断熱部材４２と後胴部断熱部材４３とによって円筒形状すなわち断面視で円状の胴板１１を覆うように形成されており、Ｂ－Ｂ線が２個の分割断熱部材の分割位置である。前胴部断熱部材４２は、貯湯タンク１０の前側を覆い、後胴部断熱部材４３は、貯湯タンク１０の後側を覆って設けられる。なお、貯湯タンク１０の前後については、本実施の形態で説明する方向に限られない。 The front body heat insulating member 42 and the rear body heat insulating member 43 have a cylindrical shape, that is, a cross section formed by the front body heat insulating member 42 and the rear body heat insulating member 43, as shown in FIG. It is formed so as to cover the circular body plate 11 visually, and the BB line is the divided position of the two divided heat insulating members. The front body heat insulating member 42 covers the front side of the hot water storage tank 10, and the rear body heat insulating member 43 covers the rear side of the hot water storage tank 10. The front and rear of the hot water storage tank 10 are not limited to the directions described in the present embodiment.
　また、上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３、及び下部断熱部材４４は、他の分割断熱部材との接触面である分割面において、互いに接触する分割断熱部材のうち少なくともいずれか一方に複数のバリが形成されている。分割面とは、例えば図６のＢ－Ｂ線で示す分割位置の面であり、図６であればＢ－Ｂ線に示す面で前胴部断熱部材４２と後胴部断熱部材４３とが接している。なお、バリについての詳細は、発泡断熱部材４０の製造方法について説明する際に後述する。 Further, the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 44 are the divided heat insulating members that come into contact with each other on the divided surface which is the contact surface with the other divided heat insulating members. A plurality of burrs are formed on at least one of them. The divided surface is, for example, the surface at the divided position shown by the line BB in FIG. 6, and in the case of FIG. 6, the front body heat insulating member 42 and the rear body heat insulating member 43 are formed on the surface shown by the line BB. I'm in contact. The details of the burr will be described later when the method for manufacturing the foamed heat insulating member 40 is described.
　上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３、及び下部断熱部材４４の４個の分割断熱部材の厚さは、貯湯タンク１０の周囲への取り付けやすさを考慮して、１ｍｍ以上４００ｍｍ以下に形成されることが好ましい。 The thickness of the four divided heat insulating members 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower heat insulating member 44 is set in consideration of ease of attachment to the periphery of the hot water storage tank 10. It is preferably formed to be 1 mm or more and 400 mm or less.
　また、上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３、及び下部断熱部材４４には、それぞれ外部から必要な各種部材が取り付けられるため、図５に示すように、表面に凹凸形状を有する。なお、表面に凹凸形状を有しない分割断熱部材を用いてもよい。 Further, since various necessary members are attached to the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 44 from the outside, as shown in FIG. It has an uneven shape. A split heat insulating member having no uneven shape on the surface may be used.
　発泡断熱部材４０は、上部断熱部材４１、前胴部断熱部材４２及び後胴部断熱部材４３が硬質ポリウレタンフォームで形成され、下部断熱部材４４が発泡スチロールで形成されている。硬質ポリウレタンフォームは低い熱伝導率を有するため、硬質ポリウレタンフォームで形成された発泡断熱部材４０を用いることで、特に優れた断熱性能が得られる。また、前述したように、貯湯タンク１０の下部は低温となっているため、下部断熱部材４４は上部断熱部材４１や前胴部断熱部材４２、後胴部断熱部材４３ほどの断熱性能を要しない場合もある。よって、下部断熱部材４４については、硬質ポリウレタンフォームよりも機械強度が大きい発泡スチロールで形成することで、貯湯タンク１０を安定して保持することができる。 In the foam heat insulating member 40, the upper heat insulating member 41, the front body heat insulating member 42 and the rear body heat insulating member 43 are formed of rigid polyurethane foam, and the lower heat insulating member 44 is formed of styrofoam. Since the rigid polyurethane foam has a low thermal conductivity, particularly excellent heat insulating performance can be obtained by using the foam heat insulating member 40 formed of the rigid polyurethane foam. Further, as described above, since the lower part of the hot water storage tank 10 has a low temperature, the lower heat insulating member 44 does not require as much heat insulating performance as the upper heat insulating member 41, the front body heat insulating member 42, and the rear body heat insulating member 43. In some cases. Therefore, the lower heat insulating member 44 can be stably held in the hot water storage tank 10 by being formed of styrofoam having a higher mechanical strength than the rigid polyurethane foam.
　なお、本実施の形態では発泡断熱部材４０が硬質ポリウレタンフォームと発泡スチロールで形成される場合について説明するが、これに限られるものではなく、全体を硬質ポリウレタンフォーム形成するものとしても良いし、他の発泡樹脂材料を用いて形成しても良い。 In the present embodiment, the case where the foamed heat insulating member 40 is formed of the rigid polyurethane foam and the expanded polystyrene will be described, but the present invention is not limited to this, and the entire foam insulating member 40 may be formed of the rigid polyurethane foam, or other It may be formed using a foamed resin material.
　ここで、硬質ポリウレタンフォームについて説明する。ポリウレタンフォームは、気泡（セル）構造を有しており、軟質ポリウレタンフォームと硬質ポリウレタンフォームとに分類される。このうち軟質ポリウレタンフォームは、セル膜が破れた連通気泡（オープンセル）のセル形状を有し、熱が逃げやすい構造のため断熱性が低く、弾性体としての性能が求められるマットレスや自動車シート等に利用されている。一方で、硬質ポリウレタンフォームは、セル膜が破れていない独立気泡（クローズドセル）のセル形状を有し、強度及び断熱性に優れることから、断熱材に利用されている。したがって、本実施の形態の発泡断熱部材４０の材料としてポリウレタンフォームを用いる場合は、硬質ポリウレタンフォームに限られる。 Here, the rigid polyurethane foam will be described. Polyurethane foam has a cell structure and is classified into flexible polyurethane foam and rigid polyurethane foam. Of these, flexible polyurethane foam has a cell shape of open cells with a torn cell membrane, and has a structure that allows heat to escape easily, so it has low heat insulation, and mattresses, automobile seats, etc. that are required to have performance as an elastic body. It is used for. On the other hand, the rigid polyurethane foam is used as a heat insulating material because it has a closed cell cell shape in which the cell film is not broken and is excellent in strength and heat insulating property. Therefore, when polyurethane foam is used as the material of the foam insulation member 40 of the present embodiment, it is limited to rigid polyurethane foam.
　次に、実施の形態１の樹脂成形用金型及び樹脂成形用金型を用いた貯湯タンクユニットの製造方法について、図７から図１４を用いて説明する。 Next, the resin molding die of the first embodiment and the method of manufacturing the hot water storage tank unit using the resin molding die will be described with reference to FIGS. 7 to 14.
　以下、樹脂成形用金型の構成について説明する。 The configuration of the resin molding mold will be described below.
　まず、樹脂部材としての発泡断熱部材４０のうち、前胴部断熱部材４２を成形するための樹脂成形用金型５００について、図７及び図８を用いて説明する。図７は、本実施の形態の前胴部断熱部材４２を成形するための樹脂成形用金型５００を示す斜視図、図８は樹脂成形用金型５００を示す平面図である。 First, among the foam heat insulating members 40 as the resin members, the resin molding mold 500 for molding the front body heat insulating member 42 will be described with reference to FIGS. 7 and 8. FIG. 7 is a perspective view showing a resin molding die 500 for molding the front body heat insulating member 42 of the present embodiment, and FIG. 8 is a plan view showing a resin molding die 500.
　前胴部断熱部材４２を成形するための樹脂成形用金型５００は、図７に示すように、下型５１０と、上型５２０とからなり、下型５１０に上型５２０を閉じることにより、下型５１０と上型５２０とで包囲形成されるキャビティに充填された樹脂材料を成形することができる。 As shown in FIG. 7, the resin molding die 500 for molding the front body heat insulating member 42 is composed of a lower die 510 and an upper die 520, and by closing the upper die 520 in the lower die 510, the upper die 520 is closed. The resin material filled in the cavity surrounded by the lower mold 510 and the upper mold 520 can be molded.
　下型５１０は、第１外縁部５１１に周囲を取り囲まれた凹部５１２を有する。より具体的には、凹部５１２は、下型５１０の第１外縁部５１１よりも凹んで設けられた部分である。また、凹部５１２は、略円柱形状を高さ方向に２分割した形状である。なお、凹部５１２を形成する面は、曲面又は平面に限られず、凹凸を有していても構わない。 The lower mold 510 has a recess 512 surrounded by a first outer edge portion 511. More specifically, the recess 512 is a portion recessed from the first outer edge portion 511 of the lower mold 510. Further, the recess 512 is a shape obtained by dividing a substantially cylindrical shape into two in the height direction. The surface forming the recess 512 is not limited to a curved surface or a flat surface, and may have irregularities.
　上型５２０は、第２外縁部５２１に周囲を取り囲まれた凸部５２２を有する。より具体的には、凸部５２２は、上型５２０の第２外縁部５２１よりも突出して設けられた部分である。また、凸部５２２は、略円柱形状を高さ方向に２分割した形状である。上型５２０を下型５１０に閉じた場合に、第１外縁部５１１と第２外縁部５２１とが接して、凹部５１２内に凸部５２２が収容されると、凹部５１２と凸部５２２との間にキャビティ５０１が形成される。なお、凸部５２２を形成する面は、曲面又は平面に限られず、凹凸を有していても構わない。 The upper mold 520 has a convex portion 522 surrounded by a second outer edge portion 521. More specifically, the convex portion 522 is a portion provided so as to project from the second outer edge portion 521 of the upper die 520. Further, the convex portion 522 is a shape obtained by dividing a substantially cylindrical shape into two in the height direction. When the upper mold 520 is closed to the lower mold 510, the first outer edge portion 511 and the second outer edge portion 521 come into contact with each other, and when the convex portion 522 is accommodated in the concave portion 512, the concave portion 512 and the convex portion 522 become A cavity 501 is formed between them. The surface forming the convex portion 522 is not limited to a curved surface or a flat surface, and may have irregularities.
　ここで、キャビティ５０１について詳しく説明する。図１０に断面図を示すように、キャビティ５０１は、下型５１０の凹部５１２内において、下型５１０と上型５２０とで包囲形成される領域である。つまり、キャビティ５０１は、下型５１０の凹部５１２内にのみ形成されており、上型５２０側には形成されない。そして、キャビティ５０１の最上部の位置には、重力がはたらく方向である上下方向に垂直な水平方向であって第１外縁部５１１及び第２外縁部５２１の面と平行な方向に延出したエアベント５０２が設けられ、エアベント５０２によってキャビティ５０１の最上部と樹脂成形用金型５００の外部とが連通されている。 Here, the cavity 501 will be described in detail. As shown in the cross-sectional view in FIG. 10, the cavity 501 is a region surrounded by the lower mold 510 and the upper mold 520 in the recess 512 of the lower mold 510. That is, the cavity 501 is formed only in the recess 512 of the lower die 510, and is not formed on the upper die 520 side. Then, at the uppermost position of the cavity 501, an air vent extending in a horizontal direction perpendicular to the vertical direction, which is the direction in which gravity acts, and extending in a direction parallel to the surfaces of the first outer edge portion 511 and the second outer edge portion 521. A 502 is provided, and an air vent 502 communicates the uppermost portion of the cavity 501 with the outside of the resin molding die 500.
　下型５１０の第１外縁部５１１と上型５２０の第２外縁部５２１とは、上型５２０を下型５１０に閉じた場合に対向してその一部が接触する部分であり、下型５１０と上型５２０とで対向する位置にそれぞれエアベントとして機能する凹み面５１３、５２３が間隔を空けて複数形成されている。図８（Ａ）に上型５２０の平面図、図８（Ｂ）に下型５１０の平面図をそれぞれ示すように、凹み面５１３、５２３は、それぞれ等しい幅を有しており、隣り合う他の凹み面５１３、５２３との間の距離はそれぞれ同一である。 The first outer edge portion 511 of the lower mold 510 and the second outer edge portion 521 of the upper mold 520 are portions that face each other when the upper mold 520 is closed to the lower mold 510, and a part of the upper mold 510 is in contact with the lower mold 510. A plurality of recessed surfaces 513 and 523 that function as air vents are formed at positions facing each other at positions facing each other with the upper die 520 and the upper die 520 at intervals. As shown in FIG. 8 (A) and a plan view of the upper die 520 and FIG. 8 (B) a plan view of the lower die 510, the recessed surfaces 513 and 523 have the same width and are adjacent to each other. The distances between the recessed surfaces 513 and 523 are the same.
　ここで、エアベント５０２について詳しく説明する。エアベント５０２は、図１０に示すように、下型５１０に上型５２０を閉じた場合に、第１外縁部５１１と第２外縁部とが凹み面５１３、５２３による空間を介して対向する箇所であって、キャビティ５０１の最上部の位置に形成される。すなわち、エアベント５０２は複数の凹み面５１３、５２３によって複数形成され、それぞれ等しい幅を有する。そして、エアベント５０２は、キャビティ５０１の最上部と樹脂成形用金型５００の外部とを連通している。したがって、エアベント５０２によって、樹脂成形用金型５００のキャビティ５０１内に存在する気体は、樹脂成形用金型５００の外部へと放出される。また、図８に示すように、下型５１０の凹部５１２内に形成されるキャビティ５０１は平面視で矩形であり、図８（Ｂ）に破線で示す矩形の角部となる四隅の位置に凹み面５１３が設けられるため、下型５１０に上型５２０を閉じた場合に矩形の角部と樹脂成形用金型５００の外部とを連通するエアベント５０２が形成される。 Here, the air vent 502 will be described in detail. As shown in FIG. 10, in the air vent 502, when the upper mold 520 is closed to the lower mold 510, the first outer edge portion 511 and the second outer edge portion face each other through the space provided by the recessed surfaces 513 and 523. It is formed at the uppermost position of the cavity 501. That is, a plurality of air vents 502 are formed by a plurality of recessed surfaces 513 and 523, and each has an equal width. The air vent 502 communicates the uppermost portion of the cavity 501 with the outside of the resin molding die 500. Therefore, the air vent 502 releases the gas existing in the cavity 501 of the resin molding die 500 to the outside of the resin molding die 500. Further, as shown in FIG. 8, the cavity 501 formed in the recess 512 of the lower mold 510 is rectangular in a plan view, and is recessed at the four corners of the rectangle shown by the broken line in FIG. 8 (B). Since the surface 513 is provided, an air vent 502 that communicates the rectangular corner portion with the outside of the resin molding die 500 is formed when the upper die 520 is closed to the lower die 510.
　次に、樹脂部材としての発泡断熱部材４０のうち、上部断熱部材４１を成形するための樹脂成形用金型６００について、図１２を用いて詳細を説明する。図１２は、本実施の形態の上部断熱部材４１を成形するための樹脂成形用金型６００を示す平面図である。 Next, among the foam heat insulating members 40 as the resin members, the resin molding mold 600 for molding the upper heat insulating member 41 will be described in detail with reference to FIG. FIG. 12 is a plan view showing a resin molding die 600 for molding the upper heat insulating member 41 of the present embodiment.
　上部断熱部材４１を成形するための樹脂成形用金型６００は、図１２（Ａ）に示す上型６２０と、図１２（Ｂ）に示す下型６１０とからなり、下型６１０に上型６２０を閉じることにより、下型６１０と上型６２０とで包囲形成されるキャビティに充填された樹脂材料を成形することができる。 The resin molding mold 600 for molding the upper heat insulating member 41 includes an upper mold 620 shown in FIG. 12 (A) and a lower mold 610 shown in FIG. 12 (B), and the lower mold 610 and the upper mold 620 are formed. By closing, the resin material filled in the cavity surrounded by the lower mold 610 and the upper mold 620 can be molded.
　下型６１０は、図１２（Ｂ）に示すように、第１外縁部６１１に周囲を取り囲まれた凹部６１２を有する。より具体的には、凹部６１２は、下型６１０の第１外縁部６１１よりも凹んで設けられた部分である。また、凹部６１２は、平面視で略円状の椀状の形状である。なお、凹部６１２を形成する面は、曲面又は平面に限られず、凹凸を有していても構わない。 As shown in FIG. 12B, the lower mold 610 has a recess 612 surrounded by a first outer edge portion 611. More specifically, the recess 612 is a portion recessed from the first outer edge portion 611 of the lower mold 610. Further, the concave portion 612 has a bowl-shaped shape that is substantially circular in a plan view. The surface forming the recess 612 is not limited to a curved surface or a flat surface, and may have irregularities.
　上型６２０は、図１２（Ａ）に示すように、第２外縁部６２１に周囲を取り囲まれた凸部６２２を有する。より具体的には、凸部６２２は、上型６２０の第２外縁部６２１よりも突出して設けられた部分である。また、凸部６２２は、平面視で略円状であって、曲面を呈する形状である。上型６２０を下型６１０に閉じた場合に、第１外縁部６１１と第２外縁部６２１とが接して、凹部６１２内に凸部６２２が収容されると、凹部６１２と凸部６２２との間にキャビティ６０１が形成される。なお、凸部６２２を形成する面は、曲面又は平面に限られず、凹凸を有していても構わない。 As shown in FIG. 12A, the upper mold 620 has a convex portion 622 surrounded by a second outer edge portion 621. More specifically, the convex portion 622 is a portion provided so as to project from the second outer edge portion 621 of the upper die 620. Further, the convex portion 622 has a substantially circular shape in a plan view and has a curved surface shape. When the upper mold 620 is closed to the lower mold 610, when the first outer edge portion 611 and the second outer edge portion 621 come into contact with each other and the convex portion 622 is accommodated in the concave portion 612, the concave portion 612 and the convex portion 622 become A cavity 601 is formed between them. The surface forming the convex portion 622 is not limited to a curved surface or a flat surface, and may have irregularities.
　ここで、キャビティ６０１について詳しく説明する。図１３に断面図を示すように、キャビティ６０１は、下型６１０の凹部６１２内において、下型６１０と上型６２０とで包囲形成される領域である。つまり、キャビティ６０１は、下型６１０の凹部６１２内にのみ形成されており、上型６２０側には形成されない。そして、キャビティ６０１の最上部の位置には、重力がはたらく方向である上下方向に垂直な水平方向であって第１外縁部６１１及び第２外縁部６２１の面と平行な方向に延出したエアベント６０２が設けられ、エアベント６０２によってキャビティ６０１の最上部と樹脂成形用金型６００の外部とが連通されている。 Here, the cavity 601 will be described in detail. As shown in the cross-sectional view in FIG. 13, the cavity 601 is a region surrounded by the lower mold 610 and the upper mold 620 in the recess 612 of the lower mold 610. That is, the cavity 601 is formed only in the recess 612 of the lower mold 610, and is not formed on the upper mold 620 side. Then, at the uppermost position of the cavity 601, an air vent extending in a horizontal direction perpendicular to the vertical direction, which is the direction in which gravity acts, and extending in a direction parallel to the surfaces of the first outer edge portion 611 and the second outer edge portion 621. A 602 is provided, and an air vent 602 communicates the uppermost portion of the cavity 601 with the outside of the resin molding die 600.
　下型６１０の第１外縁部６１１と上型６２０の第２外縁部６２１とは、上型６２０を下型６１０に閉じた場合に対向してその一部が接触する部分であり、下型６１０と上型６２０とで対向する位置にそれぞれエアベントとして機能する凹み面６１３、６２３が間隔を空けて複数形成されている。図１２に示すように、凹み面６１３、６２３は、それぞれ等しい幅を有しており、隣り合う他の凹み面６１３、６２３との間の距離はそれぞれ同一である。 The first outer edge portion 611 of the lower mold 610 and the second outer edge portion 621 of the upper mold 620 are portions that face each other when the upper mold 620 is closed to the lower mold 610, and a part of the upper mold 610 is in contact with the lower mold 610. A plurality of recessed surfaces 613 and 623 that function as air vents are formed at positions facing each other at positions facing each other with the upper die 620 and the upper die 620 at intervals. As shown in FIG. 12, the recessed surfaces 613 and 623 have the same width, respectively, and the distances between the recessed surfaces 613 and 623 adjacent to each other are the same.
　ここで、エアベント６０２について詳しく説明する。エアベント６０２は、図１３に示すように、下型６１０に上型６２０を閉じた場合に、第１外縁部６１１と第２外縁部６２１とが凹み面６１３、６２３による空間を介して対向する箇所であって、キャビティ６０１の最上部の位置に形成される。すなわち、エアベント６０２は複数の凹み面６１３、６２３によって複数形成され、それぞれ等しい幅を有する。そして、エアベント６０２は、キャビティ６０１の最上部と樹脂成形用金型６００の外部とを連通している。したがって、エアベント６０２によって、樹脂成形用金型６００のキャビティ６０１内に存在する気体は、樹脂成形用金型６００の外部へと放出される。 Here, the air vent 602 will be described in detail. As shown in FIG. 13, the air vent 602 is a portion where the first outer edge portion 611 and the second outer edge portion 621 face each other through the space provided by the recessed surfaces 613 and 623 when the upper mold 620 is closed to the lower mold 610. It is formed at the uppermost position of the cavity 601. That is, a plurality of air vents 602 are formed by a plurality of recessed surfaces 613 and 623, and each has an equal width. The air vent 602 communicates the uppermost portion of the cavity 601 with the outside of the resin molding die 600. Therefore, the air vent 602 releases the gas existing in the cavity 601 of the resin molding die 600 to the outside of the resin molding die 600.
　以下、上述した樹脂成形用金型５００、６００を用いた貯湯タンクユニット１００の製造方法について説明する。 Hereinafter, a method for manufacturing the hot water storage tank unit 100 using the resin molding dies 500 and 600 described above will be described.
　貯湯タンクユニット１００の製造方法では、まず、貯湯タンク１０、貯湯タンク１０を収容する外装ケース５０、及び発泡断熱部材４０を形成するための樹脂成形用金型５００、６００を準備する。なお、貯湯タンク１０は、上述した構造を有している。 In the method of manufacturing the hot water storage tank unit 100, first, the hot water storage tank 10, the outer case 50 for accommodating the hot water storage tank 10, and the resin molding dies 500 and 600 for forming the foam insulation member 40 are prepared. The hot water storage tank 10 has the above-mentioned structure.
　次に、樹脂成形用金型を用いて、発泡断熱部材４０を構成する上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３及び下部断熱部材４４をそれぞれ発泡成形する。 Next, using a resin molding die, the upper heat insulating member 41, the front body heat insulating member 42, the rear body heat insulating member 43, and the lower body heat insulating member 44, which form the foam heat insulating member 40, are foam molded.
　ここで、樹脂成形用金型５００を用いた前胴部断熱部材４２の成形方法について、図９から図１１を用いて詳細を説明する。図９は樹脂成形用金型５００を用いた貯湯タンクユニット１００の製造方法を説明するための斜視図、図１０は樹脂成形用金型５００を用いた貯湯タンクユニット１００の製造方法を説明するための断面図である。また、図１１は、樹脂成形用金型５００を用いて成形した前胴部断熱部材４２を示す概略図である。 Here, the molding method of the front body heat insulating member 42 using the resin molding die 500 will be described in detail with reference to FIGS. 9 to 11. FIG. 9 is a perspective view for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 500, and FIG. 10 is for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 500. It is a cross-sectional view of. Further, FIG. 11 is a schematic view showing a front body heat insulating member 42 formed by using the resin molding die 500.
　まず、図９に示すように、樹脂成形用金型５００を準備し、樹脂を注入するための注入ヘッド９００を矢印で示すように動かしながら、下型５１０の凹部５１２内に液状混合物である樹脂材料を注入する。このとき、製品形状の体積に対して樹脂材料のフリーフォーム密度すなわち無負荷状態での発泡後密度を掛け合わせて得られる必要量よりも多い量の樹脂材料を充填するオーバーパックすなわち過充填を行う。 First, as shown in FIG. 9, a resin molding die 500 is prepared, and while moving the injection head 900 for injecting the resin as shown by an arrow, the resin which is a liquid mixture is contained in the recess 512 of the lower die 510. Inject the material. At this time, overpacking, that is, overfilling is performed in which a resin material is filled in an amount larger than the required amount obtained by multiplying the volume of the product shape by the freeform density of the resin material, that is, the density after foaming in a no-load state. ..
　下型５１０の凹部５１２内に樹脂材料を注入した後に、上型５２０を下型５１０に閉じて圧力をかける。そうすると、図１０に示すように、樹脂材料４００が発泡して上型５２０と下型５１０との間のキャビティ５０１内に充填される。このとき、キャビティ５０１内に存在していた気体は、樹脂材料４００が発泡してキャビティ５０１の下側から上側へと充填されていくにつれて、エアベント５０２から樹脂成形用金型５００の外部へと放出される。そして、樹脂材料４００は過充填されているため、キャビティ５０１内全体に充填された後、上型５２０と下型５１０と凹み面５１３、５２３によって形成されるエアベント５０２にも充填されて硬化される。 After injecting the resin material into the recess 512 of the lower mold 510, the upper mold 520 is closed to the lower mold 510 and pressure is applied. Then, as shown in FIG. 10, the resin material 400 is foamed and filled in the cavity 501 between the upper mold 520 and the lower mold 510. At this time, the gas existing in the cavity 501 is released from the air vent 502 to the outside of the resin molding die 500 as the resin material 400 foams and is filled from the lower side to the upper side of the cavity 501. Will be done. Since the resin material 400 is overfilled, the entire inside of the cavity 501 is filled, and then the air vent 502 formed by the upper die 520, the lower die 510, and the recessed surfaces 513 and 523 is also filled and cured. ..
　なお、このとき、キャビティ５０１の最上部に連通して形成された複数のエアベント５０２によってキャビティ５０１内の気体が樹脂成形用金型５００の外部へと放出されるため、真空引きをする必要はない。したがって、より簡易な構造を有する金型を用いることができる。 At this time, since the gas in the cavity 501 is discharged to the outside of the resin molding die 500 by the plurality of air vents 502 formed in communication with the uppermost portion of the cavity 501, it is not necessary to evacuate. .. Therefore, a mold having a simpler structure can be used.
　以上のようにして、前胴部断熱部材４２を成形した後、樹脂成形用金型５００から取り出す。取り出した前胴部断熱部材４２は、図１１にその概略図を示すように、樹脂成形用金型５００のエアベント５０２に充填された樹脂材料による複数のバリ４２ｂを有する。すなわち、前胴部断熱部材４２は、後胴部断熱部材４３と接する分割面４２ａに複数のバリ４２ｂを有する。また、エアベント５０２は等しい幅を有するため、複数のバリ４２ｂもそれぞれ等しい幅Ｗを有する。また、図１０に示すバリ４２ｂの厚さＨは、例えば１ｍｍ以上２０ｍｍ以下である。 After molding the front body heat insulating member 42 as described above, it is taken out from the resin molding mold 500. The removed front body heat insulating member 42 has a plurality of burrs 42b made of a resin material filled in the air vent 502 of the resin molding die 500, as shown in the schematic view in FIG. That is, the front body heat insulating member 42 has a plurality of burrs 42b on the divided surface 42a in contact with the rear body heat insulating member 43. Further, since the air vent 502 has the same width, the plurality of burrs 42b also have the same width W. The thickness H of the burr 42b shown in FIG. 10 is, for example, 1 mm or more and 20 mm or less.
　バリ４２ｂは、各分割断熱部材を用いて貯湯タンク１０の周囲を覆った場合に、前胴部断熱部材４２の分割面４２ａに沿って平行に貯湯タンク１０の反対側へとその一部が突出して形成された部分である。 When the burrs 42b cover the periphery of the hot water storage tank 10 with each divided heat insulating member, a part of the burr 42b projects parallel to the opposite side of the hot water storage tank 10 along the divided surface 42a of the front body heat insulating member 42. It is a part formed by.
　また、同様にして、後胴部断熱部材４３を樹脂成形用金型５００と同様の構成を有する樹脂成形用金型によって発泡成形することができる。後胴部断熱部材４３も、前胴部断熱部材４２と同様に、前胴部断熱部材４２と接する分割面に沿って平行に貯湯タンク１０の反対側へ形成された複数のバリを有する。 Further, in the same manner, the rear body heat insulating member 43 can be foam-molded by a resin molding die having the same structure as the resin molding die 500. The rear body heat insulating member 43 also has a plurality of burrs formed on the opposite side of the hot water storage tank 10 in parallel along the dividing surface in contact with the front body heat insulating member 42, similarly to the front body heat insulating member 42.
　ここで、バリの厚さが小さい場合は、前胴部断熱部材４２の分割面４２ａに形成されたバリ４２ｂと後胴部断熱部材４３の分割面形成されたバリとが互いに接触する配置であっても、分割面同士を合わせて貯湯タンク１０を覆うことができる。なお、前胴部断熱部材４２と後胴部断熱部材４３とで分割面及びバリからなる接触面同士が干渉しないようにするために、それぞれの樹脂成形用金型においてエアベントの位置を互い違いに設けて、貯湯タンクに取り付ける際に交互にバリが形成された構造としても良い。 Here, when the thickness of the burr is small, the burr 42b formed on the split surface 42a of the front body heat insulating member 42 and the burr formed on the split surface of the rear body heat insulating member 43 are arranged so as to come into contact with each other. However, the hot water storage tank 10 can be covered by combining the divided surfaces. In addition, in order to prevent the contact surfaces formed of the split surface and the burr from interfering with each other between the front body heat insulating member 42 and the rear body heat insulating member 43, the positions of the air vents are alternately provided in the respective resin molding dies. Therefore, a structure in which burrs are alternately formed when attached to the hot water storage tank may be used.
　また、ここで、樹脂成形用金型６００を用いた上部断熱部材４１の成形方法について、図１３及び図１４を用いて詳細を説明する。図１３は樹脂成形用金型６００を用いた貯湯タンクユニット１００の製造方法を説明するための断面図である。また、図１４は、樹脂成形用金型６００を用いて成形した上部断熱部材４１を示す概略図である。 Further, here, the molding method of the upper heat insulating member 41 using the resin molding die 600 will be described in detail with reference to FIGS. 13 and 14. FIG. 13 is a cross-sectional view for explaining a method of manufacturing the hot water storage tank unit 100 using the resin molding die 600. Further, FIG. 14 is a schematic view showing an upper heat insulating member 41 molded by using the resin molding die 600.
　まず、樹脂成形用金型６００を準備し、樹脂を注入するための注入ヘッドを用いて、下型６１０の凹部６１２内に液状混合物である樹脂材料を注入する。このとき、製品形状の体積に対して樹脂材料のフリーフォーム密度すなわち無負荷状態での発泡後密度を掛け合わせて得られる必要量よりも多い量の樹脂材料を充填するオーバーパックすなわち過充填を行う。 First, a resin molding mold 600 is prepared, and a resin material that is a liquid mixture is injected into the recess 612 of the lower mold 610 using an injection head for injecting resin. At this time, overpacking, that is, overfilling is performed in which a resin material is filled in an amount larger than the required amount obtained by multiplying the volume of the product shape by the freeform density of the resin material, that is, the density after foaming in a no-load state. ..
　下型６１０の凹部６１２内に樹脂材料を注入した後に、上型６２０を下型６１０に閉じて圧力をかける。そうすると、図１３に示すように、樹脂材料４００が発泡して上型６２０と下型６１０との間のキャビティ６０１内に充填される。このとき、キャビティ６０１内に存在していた気体は、樹脂材料４００が発泡してキャビティ６０１の下側から上側へと充填されていくにつれて、エアベント６０２から樹脂成形用金型６００の外部へと放出される。そして、樹脂材料４００は過充填されているため、キャビティ６０１内全体に充填された後、上型６２０と下型６１０と凹み面６１３、６２３によって形成されるエアベント６０２にも充填されて硬化される。 After injecting the resin material into the recess 612 of the lower mold 610, the upper mold 620 is closed to the lower mold 610 and pressure is applied. Then, as shown in FIG. 13, the resin material 400 is foamed and filled in the cavity 601 between the upper mold 620 and the lower mold 610. At this time, the gas existing in the cavity 601 is released from the air vent 602 to the outside of the resin molding die 600 as the resin material 400 foams and is filled from the lower side to the upper side of the cavity 601. Will be done. Since the resin material 400 is overfilled, the entire inside of the cavity 601 is filled, and then the air vent 602 formed by the upper die 620, the lower die 610, and the recessed surfaces 613 and 623 is also filled and cured. ..
　なお、このとき、キャビティ６０１の最上部に連通して形成された複数のエアベント６０２によってキャビティ６０１内の気体が樹脂成形用金型６００の外部へと放出されるため、真空引きをする必要はない。したがって、より簡易な構造を有する金型を用いることができる。 At this time, since the gas in the cavity 601 is discharged to the outside of the resin molding die 600 by the plurality of air vents 602 formed in communication with the uppermost portion of the cavity 601, it is not necessary to evacuate. .. Therefore, a mold having a simpler structure can be used.
　以上のようにして、上部断熱部材４１を成形した後、樹脂成形用金型６００から取り出す。取り出した上部断熱部材４１は、図１４にその概略図を示すように、樹脂成形用金型６００のエアベント６０２に充填された樹脂材料による複数のバリ４１ｂを有する。すなわち、上部断熱部材４１は、前胴部断熱部材４２及び後胴部断熱部材４３と接する分割面４１ａに複数のバリ４１ｂを有する。また、エアベント６０２は等しい幅を有するため、複数のバリ４１ｂもそれぞれ等しい幅を有する。バリ４１ｂの厚さは、例えば１ｍｍ以上２０ｍｍ以下である。 After molding the upper heat insulating member 41 as described above, it is taken out from the resin molding die 600. The removed upper heat insulating member 41 has a plurality of burrs 41b made of a resin material filled in the air vent 602 of the resin molding die 600, as shown in the schematic view in FIG. That is, the upper heat insulating member 41 has a plurality of burrs 41b on the divided surface 41a in contact with the front body heat insulating member 42 and the rear body heat insulating member 43. Further, since the air vent 602 has the same width, the plurality of burrs 41b also have the same width. The thickness of the burr 41b is, for example, 1 mm or more and 20 mm or less.
　バリ４１ｂは、各分割断熱部材を用いて貯湯タンク１０の周囲を覆った場合に、上部断熱部材４１の分割面４１ａに沿って平行に貯湯タンク１０の反対側へとその一部が突出して形成された部分である。 When the burrs 41b cover the periphery of the hot water storage tank 10 with each divided heat insulating member, a part of the burr 41b is formed so as to project parallel to the opposite side of the hot water storage tank 10 along the divided surface 41a of the upper heat insulating member 41. It is the part that was done.
　ここで、上部断熱部材４１において、前胴部断熱部材４２及び後胴部断熱部材４３と接する分割面は、前胴部断熱部材４２及び後胴部断熱部材４３との位置合わせのために、その一部が前胴部断熱部材４２又は後胴部断熱部材４３側に突出した突出部が形成されていても良い。そして、突出部に対応する前胴部断熱部材４２又は後胴部断熱部材４３の分割面の一部が陥没して形成されることで、それらが係合されて位置合わせが容易となる。なお、この突出部は、分割断熱部材間での位置合わせを容易にするためのものであり、分割面に形成されたバリの厚さよりも突出して形成される。 Here, in the upper heat insulating member 41, the divided surface in contact with the front body heat insulating member 42 and the rear body heat insulating member 43 is provided for alignment with the front body heat insulating member 42 and the rear body heat insulating member 43. A protruding portion may be formed in which a part of the front body heat insulating member 42 or the rear body heat insulating member 43 projects. Then, a part of the divided surface of the front body heat insulating member 42 or the rear body heat insulating member 43 corresponding to the protruding portion is formed by being depressed, so that they are engaged with each other and the alignment is facilitated. It should be noted that this protruding portion is for facilitating the alignment between the divided heat insulating members, and is formed so as to protrude from the thickness of the burr formed on the divided surface.
　また、同様にして、下部断熱部材４４を樹脂成形用金型６００と同様の構成を有する樹脂成形用金型によって発泡成形することができる。下部断熱部材４４も、上部断熱部材４１と同様に、前胴部断熱部材４２及び後胴部断熱部材４３と接する分割面に沿って平行に貯湯タンク１０の反対側へ形成された複数のバリを有する。 Similarly, the lower heat insulating member 44 can be foam-molded by a resin molding die having the same structure as the resin molding die 600. Similar to the upper heat insulating member 41, the lower heat insulating member 44 also has a plurality of burrs formed on the opposite side of the hot water storage tank 10 in parallel along the dividing surface in contact with the front body heat insulating member 42 and the rear body heat insulating member 43. Have.
　なお、各分割断熱部材に形成されたバリは、必要に応じて根元部を残した状態で切削しても良い。このようにすることで、分割された発泡断熱部材４０の組立性を確保し、他の部品との接触等によるバリ破壊を低減することができるため、断熱性を向上した貯湯タンクユニット１００を得ることが可能となる。 Note that the burrs formed on each divided heat insulating member may be cut with the root portion left, if necessary. By doing so, the assemblability of the divided foam heat insulating member 40 can be ensured, and the burr fracture due to contact with other parts can be reduced, so that the hot water storage tank unit 100 with improved heat insulating properties can be obtained. It becomes possible.
　このようにして各分割断熱部材が成形された後、貯湯タンク１０の周囲に上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３及び下部断熱部材４４からなる発泡断熱部材４０を取り付ける。このとき、前胴部断熱部材４２の分割面４２ａと後胴部断熱部材４３の分割面とが合わせられる。また、前胴部断熱部材４２及び後胴部断熱部材４３の上部の分割面と上部断熱部材４１の分割面とが合わせられ、前胴部断熱部材４２及び後胴部断熱部材４３の下部の分割面と下部断熱部材４４の分割面とが合わせられる。そして、貯湯タンク１０及び発泡断熱部材４０を、外装ケース５０内に収容する。このようにして、貯湯タンクユニット１００が製造される。 After each divided heat insulating member is molded in this way, a foam heat insulating member 40 composed of an upper heat insulating member 41, a front body heat insulating member 42, a rear body heat insulating member 43, and a lower body heat insulating member 44 is formed around the hot water storage tank 10. Install. At this time, the divided surface 42a of the front body heat insulating member 42 and the divided surface of the rear body heat insulating member 43 are aligned. Further, the upper divided surface of the front body heat insulating member 42 and the rear body heat insulating member 43 and the divided surface of the upper heat insulating member 41 are combined, and the lower part of the front body heat insulating member 42 and the rear body heat insulating member 43 is divided. The surface and the divided surface of the lower heat insulating member 44 are aligned. Then, the hot water storage tank 10 and the foam heat insulating member 40 are housed in the outer case 50. In this way, the hot water storage tank unit 100 is manufactured.
　本実施の形態の樹脂成形用金型、貯湯タンクユニットの製造方法及び貯湯タンクユニットの効果について説明する。 The resin molding mold of the present embodiment, the manufacturing method of the hot water storage tank unit, and the effect of the hot water storage tank unit will be described.
　従来の樹脂成形用金型を用いた断熱部材の製造方法では、断熱部材を発泡成形する際にキャビティの上部に気体が閉じ込められてしまい、樹脂材料が樹脂成形用金型のキャビティ全体に広がらないという課題があった。そこで、本実施の形態の樹脂成形用金型では、キャビティの最上部に連通するエアベントが形成されるため、キャビティの上部に気体を閉じ込めることを抑制して全体に樹脂材料が広がることができ、断熱部材の成形性を向上することができるという効果を奏する。 In the conventional method for manufacturing a heat insulating member using a resin molding die, gas is trapped in the upper part of the cavity when the heat insulating member is foam-molded, and the resin material does not spread over the entire cavity of the resin molding die. There was a problem. Therefore, in the resin molding mold of the present embodiment, since the air vent communicating with the uppermost portion of the cavity is formed, it is possible to suppress the confinement of gas in the upper part of the cavity and spread the resin material as a whole. It has the effect of improving the moldability of the heat insulating member.
　本実施の形態の貯湯タンクユニットは、各分割断熱部材の表面に図５に示すような複雑な凹凸形状を有するが、上述した樹脂成形用金型を用いることで、キャビティの最上部に連通するエアベントが形成され、キャビティ内の気体の閉じ込めを抑制することができるため、特に成形性向上の効果が大きい。 The hot water storage tank unit of the present embodiment has a complicated uneven shape as shown in FIG. 5 on the surface of each divided heat insulating member, and communicates with the uppermost portion of the cavity by using the above-mentioned resin molding die. Since an air vent is formed and the confinement of gas in the cavity can be suppressed, the effect of improving moldability is particularly great.
　また、本実施の形態の貯湯タンクユニットの製造方法では、分割面の位置まで樹脂材料が到達して成形することができるため、断熱部材の分割位置において隙間が生じることを抑制でき、断熱性能を向上した貯湯タンクユニットを得ることができる効果を奏する。 Further, in the method for manufacturing the hot water storage tank unit of the present embodiment, since the resin material can reach the position of the divided surface and be molded, it is possible to suppress the formation of a gap at the divided position of the heat insulating member, and the heat insulating performance can be improved. It has the effect of obtaining an improved hot water storage tank unit.
　さらに、本実施の形態の貯湯タンクユニットに形成されるバリは、貯湯タンクの反対側へと分割面と平行に延出されていることを特徴とする。したがって、バリが他の分割断熱部材との境界において干渉せず、貯湯タンクの周囲に容易に取り付けることができるという効果を奏する。また、バリは分割面から平行に延出されていることから、他の分割断熱部材に形成されたバリと位置合わせをすることで接触面積が大きくなり、さらに取り付けが容易となる効果を奏する。 Further, the burr formed in the hot water storage tank unit of the present embodiment is characterized in that it extends to the opposite side of the hot water storage tank in parallel with the dividing surface. Therefore, the burr does not interfere with the boundary with the other split heat insulating member, and the effect is that the burr can be easily attached around the hot water storage tank. Further, since the burrs extend in parallel from the divided surface, the contact area is increased by aligning with the burrs formed on the other divided heat insulating members, and the effect of facilitating the attachment is achieved.
　また、特に前胴部断熱部材４２及び後胴部断熱部材４３を形成する樹脂成形用金型５００については、平面視で矩形の凹部５１２内にキャビティ５０１が形成されるが、この場合、図８（Ｂ）に点線で示す矩形の頂点である４か所の角部に気体が閉じ込められることが懸念される。そこで、本実施の形態の樹脂成形用金型５００では、矩形の角部となる四隅の位置に、樹脂成形用金型５００の外部と連通するエアベント５０２が形成されるため、分割面の端部における成形性がさらに向上する効果を奏する。 Further, particularly for the resin molding mold 500 forming the front body heat insulating member 42 and the rear body heat insulating member 43, the cavity 501 is formed in the rectangular recess 512 in a plan view. In this case, FIG. There is a concern that gas may be trapped in the four corners, which are the vertices of the rectangle shown by the dotted line in (B). Therefore, in the resin molding die 500 of the present embodiment, air vents 502 communicating with the outside of the resin molding die 500 are formed at the four corners of the rectangular corners, so that the end portion of the divided surface is formed. It has the effect of further improving the moldability in the above.
　さらに、本実施の形態の樹脂成形用金型及び貯湯タンクユニットの製造方法では、エアベントの幅が同一に設けられているため、発泡成形における樹脂材料の流れを均一にすることができ、さらに成形性を向上することができるという効果を奏する。 Further, in the method for manufacturing the resin molding die and the hot water storage tank unit of the present embodiment, since the width of the air vent is the same, the flow of the resin material in the foam molding can be made uniform, and further molding. It has the effect of improving sex.
　また、樹脂材料の流れを均一にするには、エアベントの幅を同一にすることに加え、本実施の形態で説明したように、隣り合うエアベント同士が等間隔に設けられることも効果的である。 Further, in order to make the flow of the resin material uniform, in addition to making the widths of the air vents the same, it is also effective to provide adjacent air vents at equal intervals as described in the present embodiment. ..
　なお、例えば本実施の形態で示す発泡断熱部材４０を構成する各分割断熱部材のように、表面に凹凸が設けられ全体の厚さが均一でない場合は、厚さが大きく樹脂材料が多く必要な箇所についてはエアベントの幅を大きく設けても良い。このようにすることで、分割断熱部材の厚さが全体で大きく異なる場合であっても樹脂材料が均一に拡がりやすくなり、分割面の成形性が向上する効果を奏する。 In addition, for example, when the surface is uneven and the overall thickness is not uniform as in each divided heat insulating member constituting the foamed heat insulating member 40 shown in the present embodiment, a large thickness is required and a large amount of resin material is required. The width of the air vent may be increased at the location. By doing so, even if the thickness of the divided heat insulating member is significantly different as a whole, the resin material can be easily spread uniformly, and the moldability of the divided surface is improved.
　なお、本実施の形態では貯湯タンク１０が発泡断熱部材４０に覆われて断熱される構成について説明したが、さらに真空断熱材を設けて断熱性能を向上した構成とすることもできる。 In the present embodiment, the configuration in which the hot water storage tank 10 is covered with the foam heat insulating member 40 to insulate the hot water storage tank 10 has been described, but a vacuum heat insulating material may be further provided to improve the heat insulating performance.
　実施の形態１の貯湯タンクユニットの変形例について、図１５を用いて説明する。図１５は、本実施の形態の各変形例の貯湯タンクユニットの断熱部材の分割位置を示す斜視図である。 A modified example of the hot water storage tank unit of the first embodiment will be described with reference to FIG. FIG. 15 is a perspective view showing the division positions of the heat insulating members of the hot water storage tank unit of each modification of the present embodiment.
　本実施の形態の貯湯タンクユニット１００では、発泡断熱部材４０が上部断熱部材４１、前胴部断熱部材４２、後胴部断熱部材４３及び下部断熱部材４４の４個の分割断熱部材からなる場合を説明したが、これに限られるものではなく、図１５（Ａ）～（Ｄ）に示すように、分割位置を変えて２個以上に分割して形成しても良い。 In the hot water storage tank unit 100 of the present embodiment, the case where the foam heat insulating member 40 is composed of four divided heat insulating members, an upper heat insulating member 41, a front body heat insulating member 42, a rear body heat insulating member 43, and a lower body heat insulating member 44. As described above, the present invention is not limited to this, and as shown in FIGS. 15 (A) to 15 (D), the divided positions may be changed to form two or more divided pieces.
　図１５（Ａ）では、前部断熱部材４１１と後部断熱部材４１２との２部材からなる発泡断熱部材４１０を形成している。この場合も、キャビティの最上部に連通したエアベントが形成される樹脂成形用金型を用いることで、分割面にバリが形成され、断熱性能を向上した貯湯タンクユニットを得ることができる。 In FIG. 15A, a foam heat insulating member 410 composed of two members, a front heat insulating member 411 and a rear heat insulating member 412, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
　図１５（Ｂ）では、前胴部断熱部材４２１と後胴部断熱部材４２２と下部断熱部材４２３との３部材からなる発泡断熱部材４２０を形成している。この場合も、キャビティの最上部に連通したエアベントが形成される樹脂成形用金型を用いることで、分割面にバリが形成され、断熱性能を向上した貯湯タンクユニットを得ることができる。 In FIG. 15B, a foam heat insulating member 420 composed of three members, a front body heat insulating member 421, a rear body heat insulating member 422, and a lower body heat insulating member 423, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
　図１５（Ｃ）では、上部断熱部材４３１と胴部断熱部材４３２と下部断熱部材４３３との３部材からなる発泡断熱部材４３０を形成している。この場合も、キャビティの最上部に連通したエアベントが形成される樹脂成形用金型を用いることで、分割面にバリが形成され、断熱性能を向上した貯湯タンクユニットを得ることができる。 In FIG. 15C, a foam heat insulating member 430 composed of three members, an upper heat insulating member 431, a body heat insulating member 432, and a lower heat insulating member 433, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained.
　図１５（Ｄ）では、上部断熱部材４４１と下部断熱部材４４２との２部材からなる発泡断熱部材４４０を形成している。この場合も、キャビティの最上部に連通したエアベントが形成される樹脂成形用金型を用いることで、分割面にバリが形成され、断熱性能を向上した貯湯タンクユニットを得ることができる。特に、上部断熱部材４４１を硬質ポリウレタンフォームで形成し、下部断熱部材４４２を発泡スチロールで形成する等、必要に応じた設計変更が容易である。 In FIG. 15 (D), a foam heat insulating member 440 composed of two members, an upper heat insulating member 441 and a lower heat insulating member 442, is formed. Also in this case, by using a resin molding die in which an air vent communicating with the uppermost portion of the cavity is formed, burrs are formed on the divided surface, and a hot water storage tank unit having improved heat insulation performance can be obtained. In particular, the upper heat insulating member 441 is made of rigid polyurethane foam, and the lower heat insulating member 442 is made of styrofoam, so that the design can be easily changed as needed.
　なお、分割面の位置についてはこれに限られるものではない。また、製造効率を考慮すると、１個の貯湯タンク１０に取り付ける分割断熱部材の部品点数が少ないほど組立作業工数が少なくなるため、好ましい。 The position of the dividing surface is not limited to this. Further, in consideration of manufacturing efficiency, the smaller the number of parts of the split heat insulating member attached to one hot water storage tank 10, the smaller the assembly work man-hours, which is preferable.
　実施の形態１の樹脂成形用金型の各変形例について、図１６から図１８を用いて説明する。本実施の形態の樹脂成形用金型５００、６００では、第１外縁部及び第２外縁部にエアベントを形成する凹み面が均一に形成される場合を説明したが、これに限られるものではなく、図１６から図１８に示すように、エアベントを設ける位置及びその間隔を変更したものであってもよい。 Each modification of the resin molding die of the first embodiment will be described with reference to FIGS. 16 to 18. In the resin molding dies 500 and 600 of the present embodiment, the case where the recessed surfaces forming the air vents are uniformly formed on the first outer edge portion and the second outer edge portion has been described, but the present invention is not limited to this. , As shown in FIGS. 16 to 18, the position where the air vent is provided and the interval thereof may be changed.
　図１６は、前胴部断熱部材４２を形成する樹脂成形用金型５００の変形例の下型５１０の平面図である。なお、上型５２０の平面図は下型５１０の平面図に対応するため省略する。前胴部断熱部材４２では、少なくとも後胴部断熱部材４３と接する位置である分割面４２ａの位置すなわち長軸側にエアベントを形成するものであればよく、短軸側にはエアベントを有しない構成とすることができる。このような構成にすることで、分割面４２ａをより成形性良く成形することができる。なお、後胴部断熱部材４３を成形するための樹脂成形用金型であっても、同様の位置にエアベントを設けることができる。 FIG. 16 is a plan view of the lower mold 510 of a modified example of the resin molding mold 500 forming the front body heat insulating member 42. The plan view of the upper die 520 corresponds to the plan view of the lower die 510 and is omitted. The front body heat insulating member 42 may have an air vent formed at least on the position of the split surface 42a, which is a position in contact with the rear body heat insulating member 43, that is, on the long axis side, and does not have an air vent on the short axis side. Can be. With such a configuration, the divided surface 42a can be molded with better moldability. Even in the case of a resin molding die for molding the rear body heat insulating member 43, an air vent can be provided at the same position.
　また、図１７及び図１８は、上部断熱部材４１を形成する樹脂成形用金型６００の変形例の下型６１０をそれぞれ示す平面図である。なお、上型６２０の平面図は下型６１０の平面図に対応するため省略する。上部断熱部材４１では、平面視で凹部６１２の外周全体に分割面４１ａを有することから、全体にエアベントが設けられる構成であれば良い。また、複数のエアベントの個数は図１２に示す個数に限られないことは言うまでもない。なお、下部断熱部材４４を成形するための樹脂成形用金型であっても、同様の位置にエアベントを設けることができる。 17 and 18 are plan views showing a lower mold 610 of a modified example of the resin molding mold 600 forming the upper heat insulating member 41, respectively. The plan view of the upper die 620 corresponds to the plan view of the lower die 610 and is omitted. Since the upper heat insulating member 41 has a dividing surface 41a on the entire outer circumference of the recess 612 in a plan view, an air vent may be provided on the entire outer circumference. Needless to say, the number of the plurality of air vents is not limited to the number shown in FIG. Even in the case of a resin molding die for molding the lower heat insulating member 44, an air vent can be provided at the same position.
実施の形態２．
　実施の形態２の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットについて、図１９から図２１を用いて説明する。図１９は、本実施の形態の貯湯タンクユニットに備えられる前胴部断熱部材を成形するための樹脂成形用金型５００を示す斜視図、図２０は樹脂成形用金型５００を示す平面図である。また、図２１は樹脂成形用金型５００を用いた貯湯タンクユニットの製造方法を説明するための断面図である。 Embodiment 2.
The resin molding die of the second embodiment, the manufacturing method of the hot water storage tank unit using the resin molding die, and the hot water storage tank unit will be described with reference to FIGS. 19 to 21. FIG. 19 is a perspective view showing a resin molding die 500 for molding a front body heat insulating member provided in the hot water storage tank unit of the present embodiment, and FIG. 20 is a plan view showing a resin molding die 500. be. Further, FIG. 21 is a cross-sectional view for explaining a method of manufacturing a hot water storage tank unit using the resin molding die 500.
　本実施の形態の樹脂成形用金型５００は、図１９から図２１に示すように、上型５２０の第２外縁部５２１において、平坦な分割面を形成するための平坦面５２４をさらに有する点で、実施の形態１の樹脂成形用金型５００と異なる。本実施の形態の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットのその他の構成は、実施の形態１と同様であるため、以下異なる点を中心に説明する。 As shown in FIGS. 19 to 21, the resin molding die 500 of the present embodiment further has a flat surface 524 for forming a flat divided surface in the second outer edge portion 521 of the upper die 520. Therefore, it is different from the resin molding mold 500 of the first embodiment. Since the resin molding mold of the present embodiment, the manufacturing method of the hot water storage tank unit using the resin molding mold, and other configurations of the hot water storage tank unit are the same as those of the first embodiment, the following differences are mainly focused on. Explain to.
　平坦面５２４は、図１９及び図２０に示すように、上型５２０の第２外縁部５２１の一部であって、エアベント５０２が形成される外周側よりも内周側に位置する。すなわち、平坦面５２４は、図２１に示すように、上型５２０を下型５１０に閉じた場合に、キャビティ５０１の上面を形成する部分であり、平坦面５２４に接して形成される部分が、前胴部断熱部材４２の分割面となる。また、上型５２０の第２外縁部５２１に設けられる凹み面５２３は、平坦面５２４よりも凹んで設けられる。 As shown in FIGS. 19 and 20, the flat surface 524 is a part of the second outer edge portion 521 of the upper mold 520, and is located on the inner peripheral side of the outer peripheral side where the air vent 502 is formed. That is, as shown in FIG. 21, the flat surface 524 is a portion that forms the upper surface of the cavity 501 when the upper mold 520 is closed to the lower mold 510, and the portion formed in contact with the flat surface 524 is formed. It serves as a dividing surface of the front body heat insulating member 42. Further, the recessed surface 523 provided in the second outer edge portion 521 of the upper mold 520 is provided so as to be recessed from the flat surface 524.
　したがって、上型５２０を下型５１０に閉じた場合に、平坦面５２４は、下型５１０の凹部５１２と対向し、一方で、第２外縁部５２１の平坦面５２４を除く外周部は、下型５１０の第１外縁部５１１と対向する。そして、下型５１０の第１外縁部５１１に設けられた凹み面５１３と、上型の第２外縁部５２１に設けられた凹み面５２３とが対向することにより、図２１に示すように、エアベント５０２が形成され、エアベント５０２の上面はキャビティ５０１の最上部よりも上側に位置する。 Therefore, when the upper die 520 is closed to the lower die 510, the flat surface 524 faces the recess 512 of the lower die 510, while the outer peripheral portion of the second outer edge portion 521 excluding the flat surface 524 is the lower die. It faces the first outer edge portion 511 of 510. Then, the recessed surface 513 provided on the first outer edge portion 511 of the lower mold 510 and the recessed surface 523 provided on the second outer edge portion 521 of the upper mold face each other, so that the air vent is as shown in FIG. A 502 is formed and the top surface of the air vent 502 is located above the top of the cavity 501.
　ここで、本実施の形態の樹脂成形用金型５００を用いて成形された前胴部断熱部材４２は、図２１に示すように、平坦面５２４と凹み面５２３との高低差により、分割面とバリとで段差を有する場合がある。この場合であっても、分割面とバリとの段差は僅かであるため、バリは分割面に沿って形成されるといえる。なお、前胴部断熱部材と後胴部断熱部材との境界において互いのバリ同士が干渉しないために、それぞれの樹脂成形用金型においてエアベントが形成される位置を交互にしても良いが、エアベント５０２内を充填するバリの厚さＨが小さい場合等は、エアベントの位置が交互になっていなくても問題にはならない。 Here, as shown in FIG. 21, the front body heat insulating member 42 formed by using the resin molding die 500 of the present embodiment has a divided surface due to the height difference between the flat surface 524 and the recessed surface 523. And the burr may have a step. Even in this case, since the step between the dividing surface and the burr is small, it can be said that the burr is formed along the dividing surface. Since the burrs do not interfere with each other at the boundary between the front body heat insulating member and the rear body heat insulating member, the positions where the air vents are formed in the respective resin molding dies may be alternated. When the thickness H of the burr filling the inside of the 502 is small, it does not matter even if the positions of the air vents are not alternated.
　また、実施の形態１で説明した上部断熱部材を形成する樹脂成形用金型６００についても同様に、上型６２０の第２外縁部６２１の内周側に平坦面を有する構成とすることができる。 Further, the resin molding die 600 for forming the upper heat insulating member described in the first embodiment can also be similarly configured to have a flat surface on the inner peripheral side of the second outer edge portion 621 of the upper die 620. ..
　このように構成された本実施の形態の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法、及び貯湯タンクユニットにおいては、実施の形態１と同様の効果を奏するのはもちろんのこと、分割面を平坦に形成することができるため、さらに断熱性能を向上した断熱部材を得ることができる効果を奏する。 The resin molding die of the present embodiment configured as described above, the method for manufacturing the hot water storage tank unit using the resin molding die, and the hot water storage tank unit have the same effects as those of the first embodiment. Of course, since the divided surface can be formed flat, there is an effect that a heat insulating member having further improved heat insulating performance can be obtained.
実施の形態３．
　実施の形態３の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットについて、図２２から図２４を用いて説明する。図２２は、本実施の形態の貯湯タンクユニットに備えられる前胴部断熱部材を成形するための樹脂成形用金型５００を示す斜視図、図２３は樹脂成形用金型５００を示す平面図である。また、図２４は樹脂成形用金型５００を用いた貯湯タンクユニットの製造方法を説明するための断面図である。 Embodiment 3.
The resin molding die of the third embodiment, the manufacturing method of the hot water storage tank unit using the resin molding die, and the hot water storage tank unit will be described with reference to FIGS. 22 to 24. FIG. 22 is a perspective view showing a resin molding die 500 for molding a front body heat insulating member provided in the hot water storage tank unit of the present embodiment, and FIG. 23 is a plan view showing a resin molding die 500. be. Further, FIG. 24 is a cross-sectional view for explaining a method of manufacturing a hot water storage tank unit using the resin molding die 500.
　本実施の形態の樹脂成形用金型５００は、図２２から図２４に示すように、上型５２０の第２外縁部５２１において、凹み面５２３を有しない点で、実施の形態１の樹脂成形用金型５００と異なる。本実施の形態の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法及び貯湯タンクユニットのその他の構成は、実施の形態１と同様であるため、以下異なる点を中心に説明する。 As shown in FIGS. 22 to 24, the resin molding die 500 of the present embodiment does not have a recessed surface 523 at the second outer edge portion 521 of the upper die 520, and thus the resin molding of the first embodiment It is different from the mold 500. Since the resin molding mold of the present embodiment, the manufacturing method of the hot water storage tank unit using the resin molding mold, and other configurations of the hot water storage tank unit are the same as those of the first embodiment, the following differences are mainly focused on. Explain to.
　上型５２０の第２外縁部５２１は、凹み面が形成されないため、凹凸が無く平坦な面である。なお、図２２から図２４では、実施の形態２の平坦面５２４に対応する部分を平坦面５２４として図示しているが、その境界に段差等は無い。平坦面５２４は、分割面を形成するための面であって、下型５１０の凹部５１２と対向する位置にある。一方、第２外縁部５２１の平坦面５２４を除く外周部は、下型５１０の第１外縁部５１１と対向する。したがって、下型５１０の第１外縁部５１１に設けられた凹み面５１３と、上型の第２外縁部５２１の外周側の平坦な面が対向することにより、図２４に示すように、エアベント５０２が形成される。 The second outer edge portion 521 of the upper mold 520 is a flat surface without unevenness because a concave surface is not formed. In addition, in FIGS. 22 to 24, the portion corresponding to the flat surface 524 of the second embodiment is shown as a flat surface 524, but there is no step or the like at the boundary thereof. The flat surface 524 is a surface for forming a divided surface, and is located at a position facing the recess 512 of the lower mold 510. On the other hand, the outer peripheral portion of the second outer edge portion 521 excluding the flat surface 524 faces the first outer edge portion 511 of the lower mold 510. Therefore, as shown in FIG. 24, the air vent 502 is caused by the concave surface 513 provided on the first outer edge portion 511 of the lower mold 510 and the flat surface on the outer peripheral side of the second outer edge portion 521 of the upper mold facing each other. Is formed.
　また、実施の形態１で説明した上部断熱部材を形成する樹脂成形用金型６００についても同様に、上型６２０の第２外縁部６２１において、凹み面６２３を有しない構成とすることができる。 Similarly, the resin molding die 600 for forming the upper heat insulating member described in the first embodiment can also have a configuration in which the second outer edge portion 621 of the upper die 620 does not have a recessed surface 623.
　このように構成された本実施の形態の樹脂成形用金型、樹脂成形用金型を用いた貯湯タンクユニットの製造方法、及び貯湯タンクユニットにおいては、実施の形態１と同様の効果を奏するのはもちろんのこと、分割面を平坦に形成することができ、バリが分割面に沿って平行に形成されるため、分割断熱部材同士の位置合わせが容易となり、断熱性能をさらに向上した断熱部材を得ることができる効果を奏する。 The resin molding die of the present embodiment configured as described above, the method for manufacturing the hot water storage tank unit using the resin molding die, and the hot water storage tank unit have the same effects as those of the first embodiment. Of course, the divided surface can be formed flat, and the burrs are formed parallel to the divided surface, so that the divided heat insulating members can be easily aligned with each other, and the heat insulating member with further improved heat insulating performance can be provided. It produces the effects that can be obtained.
　なお、各実施の形態を、適宜、組み合わせたり、変形や省略することも、本開示の範囲に含まれる。 It should be noted that it is also included in the scope of the present disclosure that each embodiment is appropriately combined, modified or omitted.
１０　貯湯タンク、
２１　ヒートポンプ往き配管、２２　ヒートポンプ戻り配管、
２３　減圧弁、２４　逃し弁、２５　混合弁、２６　切替弁、２７　逆止弁、
２８　冷水配管、２９　熱源ポンプ、３０　温度センサ、３１　温水配管、３２　分岐給水管、３３　給湯配管、３４　給湯端末、
４０、４１０、４２０、４３０、４４０　発泡断熱部材、
４１　上部断熱部材、４１ａ　分割面、４１ｂ　バリ、
４２　前胴部断熱部材、４２ａ　分割面、４２ｂ　バリ、
４３　後胴部断熱部材、４４　下部断熱部材、
５０　外装ケース、５１　前面板、５２　けこみ板、５３、５４　側面板、５５　背面板、５６　上面板、５７　底面板、
６０　脚部、
１００　貯湯タンクユニット、
１１０　ヒートポンプユニット、
４００　樹脂材料、
４１１　前部断熱部材、４１２　後部断熱部材、
４２１　前胴部断熱部材、４２２　後胴部断熱部材、４２３　下部断熱部材、
４３１　上部断熱部材、４３２　胴部断熱部材、４３３　下部断熱部材、
４４１　上部断熱部材、４４２　下部断熱部材、
５００、６００　樹脂成形用金型、
５０１、６０１　キャビティ、
５０２、６０２　エアベント、
５１０、６１０　下型、５１１、６１１　第１外縁部、５１２、６１２　凹部、５１３、６１３　凹み面、
５２０、６２０　上型、５２１、６２１　第２外縁部、５２２、６２２　凸部、５２３、６２３　凹み面、５２４　平坦面、
１０００　貯湯式給湯器 10 hot water storage tank,
21 heat pump outbound piping, 22 heat pump return piping,
23 pressure reducing valve, 24 relief valve, 25 mixing valve, 26 switching valve, 27 check valve,
28 Cold water pipe, 29 Heat source pump, 30 Temperature sensor, 31 Hot water pipe, 32 Branch water pipe, 33 Hot water pipe, 34 Hot water terminal,
40, 410, 420, 430, 440 foam insulation,
41 Upper insulation member, 41a dividing surface, 41b burr,
42 front fuselage insulation member, 42a split surface, 42b burr,
43 Rear fuselage insulation member, 44 Lower insulation member,
50 exterior case, 51 front plate, 52 dent plate, 53, 54 side plate, 55 back plate, 56 top plate, 57 bottom plate,
60 legs,
100 hot water storage tank unit,
110 heat pump unit,
400 resin material,
411 Front insulation, 412 Rear insulation,
421 Front torso insulation member, 422 Rear torso insulation member, 423 Lower torso insulation member,
431 Upper insulation member, 432 Body insulation member, 433 Lower insulation member,
441 Upper insulation member, 442 Lower insulation member,
500, 600 Resin molding molds,
501, 601 cavities,
502, 602 air vent,
510, 610 Lower mold, 511, 611 First outer edge, 512, 612 recesses, 513, 613 recessed surfaces,
520, 620 Upper mold, 521, 621 Second outer edge, 522, 622 Convex, 523, 623 Recessed surface, 524 Flat surface,
1000 hot water storage type water heater

Claims (15)

  1. 　凹部及び前記凹部の外縁部である第１外縁部を有する下型と、前記凹部に収容可能な凸部及び前記凸部の外縁部である第２外縁部を有する上型とからなり、断熱性の樹脂部材を発泡成形するための樹脂成形用金型であって、
    　前記下型に前記上型を閉じた場合に、
    前記凹部内に前記凸部が収容されてキャビティが形成され、さらに、
    前記第１外縁部と前記第２外縁部とが空間を介して対向する箇所である複数のエアベントが、前記キャビティの最上部と樹脂成形用金型の外部とを連通すること
    　を特徴とする樹脂成形用金型。     It is composed of a lower mold having a concave portion and a first outer edge portion which is an outer edge portion of the concave portion, and an upper mold having a convex portion which can be accommodated in the concave portion and a second outer edge portion which is an outer edge portion of the convex portion, and has heat insulating properties. It is a resin molding mold for foam molding the resin member of
    When the upper mold is closed to the lower mold,
    The convex portion is housed in the concave portion to form a cavity, and further
    A resin characterized in that a plurality of air vents at a position where the first outer edge portion and the second outer edge portion face each other with a space communicate the uppermost portion of the cavity with the outside of the resin molding die. Mold for molding.
  2. 　前記複数のエアベントは、それぞれ等しい幅を有すること
    　を特徴とする請求項１に記載の樹脂成形用金型。     The resin molding die according to claim 1, wherein the plurality of air vents have the same width.
  3. 　前記複数のエアベントは、水平方向に延出して設けられること
    　を特徴とする請求項１又は２に記載の樹脂成形用金型。     The resin molding die according to claim 1 or 2, wherein the plurality of air vents are provided so as to extend in the horizontal direction.
  4. 　前記複数のエアベントは、前記第１外縁部に設けられる凹み面と前記第２外縁部に設けられる凹み面とが対向して形成されること
    　を特徴とする請求項１から３のいずれか１項に記載の樹脂成形用金型。     One of claims 1 to 3, wherein the plurality of air vents are formed so that a recessed surface provided on the first outer edge portion and a recessed surface provided on the second outer edge portion face each other. The resin molding die described in 1.
  5. 　前記複数のエアベントは、前記第１外縁部に設けられる凹み面と前記第２外縁部の平坦な面とが対向して形成されること
    　を特徴とする請求項１から３のいずれか１項に記載の樹脂成形用金型。     The plurality of air vents according to any one of claims 1 to 3, wherein the recessed surface provided on the first outer edge portion and the flat surface of the second outer edge portion are formed so as to face each other. The resin molding mold described.
  6. 　前記キャビティは、平面視で矩形であり、
    　前記エアベントは、前記キャビティの四隅と樹脂成形用金型の外部とを連通して設けられること
    　を特徴とする請求項１から５のいずれか１項に記載の樹脂成形用金型。     The cavity is rectangular in plan view
    The resin molding die according to any one of claims 1 to 5, wherein the air vent is provided so as to communicate the four corners of the cavity with the outside of the resin molding die.
  7. 　請求項１から６のいずれか１項に記載の樹脂成形用金型の前記下型の前記凹部内に樹脂材料を注入する工程と、
    　前記下型に前記上型を閉じて加圧し、前記樹脂材料が発泡して前記キャビティ及び前記エアベントに充填された後に硬化することで前記樹脂部材を発泡成形する工程と、
    　発泡成形された前記樹脂部材を貯湯タンクの周囲に取り付ける工程と、
    　を含む貯湯タンクユニットの製造方法。     A step of injecting a resin material into the recess of the lower mold of the resin molding mold according to any one of claims 1 to 6.
    A step of foam-molding the resin member by closing the upper mold in the lower mold, pressurizing the resin material, foaming the resin material, filling the cavity and the air vent, and then curing the resin member.
    The process of attaching the foam-molded resin member around the hot water storage tank, and
    Manufacturing method of hot water storage tank unit including.
  8. 　水を貯留するための貯湯タンクと、前記貯湯タンクの周囲を覆う発泡断熱部材と、を備えた貯湯タンクユニットであって、
    　前記発泡断熱部材は、複数の分割断熱部材で構成され、前記分割断熱部材同士の分割面に沿って前記貯湯タンク側の反対側へ形成された複数のバリを有すること
    　を特徴とする貯湯タンクユニット。     A hot water storage tank unit including a hot water storage tank for storing water and a foamed heat insulating member that covers the periphery of the hot water storage tank.
    The foamed heat insulating member is composed of a plurality of divided heat insulating members, and has a plurality of burrs formed on the opposite side of the hot water storage tank side along the divided surfaces of the divided heat insulating members. ..
  9. 　前記複数のバリは、前記分割面と平行な方向へ延出して設けられること
    　を特徴とする請求項８に記載の貯湯タンクユニット。     The hot water storage tank unit according to claim 8, wherein the plurality of burrs are provided so as to extend in a direction parallel to the divided surface.
  10. 　前記分割断熱部材は、前記貯湯タンクの上部を覆う上部断熱部材と、前記貯湯タンクの下部を覆う下部断熱部材と、前記上部断熱部材及び前記下部断熱部材に接して設けられ、前記貯湯タンクの胴部側面のうち前側を覆う前胴部断熱部材と、前記上部断熱部材、前記下部断熱部材及び前記前胴部断熱部材に接して設けられ、前記貯湯タンクの胴部側面のうち後側を覆う後胴部断熱部材と、から構成されること
    　を特徴とする請求項９に記載の貯湯タンクユニット。     The split heat insulating member is provided in contact with the upper heat insulating member covering the upper part of the hot water storage tank, the lower heat insulating member covering the lower part of the hot water storage tank, the upper heat insulating member and the lower heat insulating member, and is provided in contact with the body of the hot water storage tank. After covering the rear side of the body side of the hot water storage tank, which is provided in contact with the front body heat insulating member that covers the front side of the side surface of the portion, the upper heat insulating member, the lower heat insulating member, and the front body heat insulating member. The hot water storage tank unit according to claim 9, further comprising a body heat insulating member.
  11. 　前記上部断熱部材、前記前胴部断熱部材及び前記後胴部断熱部材は、硬質ポリウレタンフォームで形成されること
    　を特徴とする請求項１０に記載の貯湯タンクユニット。     The hot water storage tank unit according to claim 10, wherein the upper heat insulating member, the front body heat insulating member, and the rear body heat insulating member are made of rigid polyurethane foam.
  12. 　前記下部断熱部材は、発泡スチロールで形成されること
    　を特徴とする請求項１０又は１１に記載の貯湯タンクユニット。     The hot water storage tank unit according to claim 10 or 11, wherein the lower heat insulating member is made of styrofoam.
  13. 　前記複数のバリは、それぞれ等しい幅を有すること
    　を特徴とする請求項８から１２のいずれか１項に記載の貯湯タンクユニット。     The hot water storage tank unit according to any one of claims 8 to 12, wherein the plurality of burrs have the same width.
  14. 　前記複数のバリは、隣り合う前記バリ同士の間が等間隔になるように設けられること
    　を特徴とする請求項８から１３のいずれか１項に記載の貯湯タンクユニット。     The hot water storage tank unit according to any one of claims 8 to 13, wherein the plurality of burrs are provided at equal intervals between adjacent burrs.
  15. 　前記複数のバリは、根元部を残した状態で切削されていること
    　を特徴とする請求項８から１４のいずれか１項に記載の貯湯タンクユニット。     The hot water storage tank unit according to any one of claims 8 to 14, wherein the plurality of burrs are cut with the root portion left.
PCT/JP2020/024952 2020-04-14 2020-06-25 Resin molding mold, hot-water storage tank unit manufacturing method, and hot-water storage tank unit WO2021210190A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2022515187A JP7380852B2 (en) 2020-04-14 2020-06-25 Manufacturing method for resin molding mold and hot water storage tank unit
DE112020007070.0T DE112020007070T5 (en) 2020-04-14 2020-06-25 Resin Molding Die, Hot Water Storage Tank Unit Manufacturing Process, and Hot Water Storage Tank Unit
JP2023111167A JP2023123827A (en) 2020-04-14 2023-07-06 Hot water storage tank unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020072104 2020-04-14
JP2020-072104 2020-04-14

Publications (1)

Publication Number Publication Date
WO2021210190A1 true WO2021210190A1 (en) 2021-10-21

Family

ID=78083868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/024952 WO2021210190A1 (en) 2020-04-14 2020-06-25 Resin molding mold, hot-water storage tank unit manufacturing method, and hot-water storage tank unit

Country Status (3)

Country Link
JP (2) JP7380852B2 (en)
DE (1) DE112020007070T5 (en)
WO (1) WO2021210190A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023238850A1 (en) * 2022-06-07 2023-12-14 三菱電機株式会社 Heat-insulating structure of hot water storage tank, hot water storage tank unit, and method for manufacturing heat-insulating structure of hot water storage tank

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08318540A (en) * 1995-05-26 1996-12-03 Matsushita Electric Works Ltd Compression molding of thermosetting resin
JP2001334546A (en) * 2000-05-25 2001-12-04 Nishikawa Kasei Co Ltd Foaming resin mold
JP2002187143A (en) * 2000-12-19 2002-07-02 Nishikawa Kasei Co Ltd Molding tool for foam
JP2002356560A (en) * 2001-05-30 2002-12-13 Toyota Central Res & Dev Lab Inc Production method of polymer/filler composite
JP2008107015A (en) * 2006-10-26 2008-05-08 Tada Plastic Kogyo Kk Hot water storage tank heat insulating structure and method of manufacturing split heat insulating member
JP2011218573A (en) * 2010-04-05 2011-11-04 Bridgestone Corp Molding die, and method of manufacturing foamed molding using the same
JP2012202660A (en) * 2011-03-28 2012-10-22 Mitsubishi Electric Corp Storage water heater
JP2013177993A (en) * 2012-02-28 2013-09-09 Noritz Corp Heat insulation material structure of hot water storage tank
JP2019190667A (en) * 2018-04-18 2019-10-31 三菱電機株式会社 Hot water storage tank unit and method for manufacturing the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100581781C (en) * 2008-12-26 2010-01-20 北京东明兴业科技有限公司 Exhaust structure of thin wall injection molding mould

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08318540A (en) * 1995-05-26 1996-12-03 Matsushita Electric Works Ltd Compression molding of thermosetting resin
JP2001334546A (en) * 2000-05-25 2001-12-04 Nishikawa Kasei Co Ltd Foaming resin mold
JP2002187143A (en) * 2000-12-19 2002-07-02 Nishikawa Kasei Co Ltd Molding tool for foam
JP2002356560A (en) * 2001-05-30 2002-12-13 Toyota Central Res & Dev Lab Inc Production method of polymer/filler composite
JP2008107015A (en) * 2006-10-26 2008-05-08 Tada Plastic Kogyo Kk Hot water storage tank heat insulating structure and method of manufacturing split heat insulating member
JP2011218573A (en) * 2010-04-05 2011-11-04 Bridgestone Corp Molding die, and method of manufacturing foamed molding using the same
JP2012202660A (en) * 2011-03-28 2012-10-22 Mitsubishi Electric Corp Storage water heater
JP2013177993A (en) * 2012-02-28 2013-09-09 Noritz Corp Heat insulation material structure of hot water storage tank
JP2019190667A (en) * 2018-04-18 2019-10-31 三菱電機株式会社 Hot water storage tank unit and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023238850A1 (en) * 2022-06-07 2023-12-14 三菱電機株式会社 Heat-insulating structure of hot water storage tank, hot water storage tank unit, and method for manufacturing heat-insulating structure of hot water storage tank

Also Published As

Publication number Publication date
JP7380852B2 (en) 2023-11-15
DE112020007070T5 (en) 2023-02-23
JPWO2021210190A1 (en) 2021-10-21
JP2023123827A (en) 2023-09-05

Similar Documents

Publication Publication Date Title
JP5310929B1 (en) Thermal insulation wall, thermal insulation box and manufacturing method thereof
JP2023123827A (en) Hot water storage tank unit
CN101251222A (en) High-strength, flame-proof vacuum insulation plate and manufacture method thereof
WO2021238237A1 (en) Thermally insulating box body manufacturing method and thermally insulating box body
JP2012102894A (en) Insulated box, and insulated wall
JP2015068587A (en) Hot water storage tank unit
JP6332123B2 (en) Hot water storage water heater
JP3391731B2 (en) Thermal insulation box and method of manufacturing thermal insulation box
JP7094136B2 (en) Hot water storage tank unit and its manufacturing method
JP2004197960A (en) Hot water storage tank, and molded heat insulation member for hot water storage tank
JP2019091633A (en) Battery case
JPWO2021210190A5 (en)
JP7485198B2 (en) Storage water heater and its manufacturing method
WO2023238850A1 (en) Heat-insulating structure of hot water storage tank, hot water storage tank unit, and method for manufacturing heat-insulating structure of hot water storage tank
JP2018130398A (en) Mold and seat pad production method
JP7264033B2 (en) Storage hot water heater
JP6524301B2 (en) Hot water storage tank unit
JP6324826B2 (en) Hot water storage tank unit
JPS5850991Y2 (en) Foam mold
CN218965948U (en) Battery cushion block foaming mold with side inlet and outlet air
CN218369490U (en) Plastic-uptake integrated foaming heat-insulation box
JP6435223B2 (en) Hot water storage tank unit
WO2022230076A1 (en) Hot water storage tank
EP3284995A1 (en) Vacuum heat insulator, and heat-insulating container and heat-insulating wall using same
JP6850967B2 (en) Foam molding mold

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20930752

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022515187

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20930752

Country of ref document: EP

Kind code of ref document: A1