heat exchanger

Abstract

A heat exchanger capable of suppressing deformation of a flow path of a heat exchange medium is provided. [Solution] The heat exchanger comprises a container that is sealed to form an internal space, a supply member attached to the container to connect the internal space with the outside and through which the heat exchange medium flows toward the internal space, a discharge member attached to the container to connect the internal space with the outside and through which the heat exchange medium flows from the internal space to the outside, and a plate that is positioned in the internal space and forms a flow path for the heat exchange medium in the internal space.

Description

[Technical Field]

[0001] This invention relates to a heat exchanger. [Background technology]

[0002] Heat exchangers for cooling or heating objects such as batteries have been known for some time. For example, Patent Document 1 discloses a heat exchanger for cooling a battery. This heat exchanger comprises an outer casing and inner fins housed within the outer casing. The inner fins are made of sheet material and are housed within the outer casing in a folded state that forms tunnels and grooves through which cooling water flows. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-159667 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] Since the heat exchanger described above is positioned near the battery, for example, if the battery expands, the battery may press against the inner fins, potentially causing deformation of the inner fins. In addition, the inner fins may also deform if any external force acts on them. If the tunnel and groove portions of the inner fins deform, the amount of cooling water flowing through them will decrease, which may prevent the battery from being adequately cooled. These problems can also arise when heating the heat exchange target, as well as when cooling and heating the heat exchange target to maintain its temperature within a predetermined temperature range.

[0005] The present invention aims to provide a heat exchanger that can suppress deformation of the flow path of the heat exchange medium. [Means for solving the problem]

[0006] A heat exchanger according to a first aspect of the present invention comprises: a container sealed to form an internal space; a supply member attached to the container to connect the internal space to the outside, through which a heat exchange medium flowing toward the internal space passes; a discharge member attached to the container to connect the internal space to the outside, through which the heat exchange medium flowing from the internal space toward the outside passes; and a plate disposed in the internal space, through which a flow path for the heat exchange medium in the internal space is formed.

[0007] A heat exchanger according to a second aspect of the present invention comprises: a container sealed to form an internal space; a supply member attached to the container to connect the internal space to the outside, through which a heat exchange medium flowing toward the internal space passes; a discharge member attached to the container to connect the internal space to the outside, through which the heat exchange medium flowing from the internal space toward the outside passes; and a plurality of plates arranged in the internal space to partition the internal space and thereby form a flow path for the heat exchange medium.

[0008] A heat exchanger according to a third aspect of the present invention is a heat exchanger according to a first or second aspect, wherein at least a portion of the surface of the plate is joined to the inner surface of the container.

[0009] A heat exchanger according to a fourth aspect of the present invention is a heat exchanger according to any one of the first or third aspects, further comprising a first diffusion member disposed between the supply member and the plate in the internal space, which diffuses the heat exchange medium that has passed through the supply member toward the flow path.

[0010] A heat exchanger according to a fifth aspect of the present invention is a heat exchanger according to any one of the first or fourth aspects, further comprising a second diffusion member disposed between the discharge member and the plate in the internal space, which diffuses the heat exchange medium that has passed through the flow path toward the discharge member.

[0011] A heat exchanger according to the sixth aspect of the present invention is a heat exchanger according to any one of the first to fifth aspects, wherein at least one of the supply member and the discharge member is integrally formed with the plate.

[0012] A heat exchanger according to a seventh aspect of the present invention comprises: a first sheet; a second sheet joined to the first sheet such that a plurality of flow channels for a heat exchange medium are formed between the first sheet and the first sheet; a supply member attached to the first and second sheets so as to communicate the flow channels with the outside, through which the heat exchange medium flowing toward the flow channels passes; a discharge member attached to the first and second sheets so as to communicate the flow channels with the outside, through which the heat exchange medium flowing from the flow channels toward the outside passes; and a spacer disposed between the plurality of flow channels to maintain the shape of the flow channels.

[0013] A heat exchanger according to the eighth aspect of the present invention comprises a first sheet, a second sheet joined to the first sheet such that at least one flow path for a heat exchange medium is formed between the first sheet and the first sheet, a supply member attached to the first and second sheets so as to communicate the flow path with the outside, through which the heat exchange medium flowing toward the flow path passes, and a discharge member attached to the first and second sheets so as to communicate the flow path with the outside, through which the heat exchange medium flowing from the flow path toward the outside passes, wherein the supply member includes a main body joined to the first and second sheets, and a plurality of passages formed in the main body through which the heat exchange medium passes.

[0014] The heat exchanger according to the ninth aspect of the present invention includes a first sheet, a second sheet joined to the first sheet such that at least one flow path through which a heat exchange medium flows is formed between the first sheet and the second sheet, a supply member attached to the first sheet and the second sheet so as to communicate the flow path with the outside, through which the heat exchange medium flowing toward the flow path passes, and a discharge member attached to the first sheet and the second sheet so as to communicate the flow path with the outside, through which the heat exchange medium flowing from the flow path to the outside passes. The discharge member includes a main body portion joined to the first sheet and the second sheet, and a plurality of passages formed in the main body portion through which the heat exchange medium passes.

Advantages of the Invention

[0015] According to the heat exchanger of the present invention, deformation of the flow path of the heat exchange medium can be suppressed.

Brief Description of the Drawings

[0016] [Figure 1] Plan view of the heat exchanger of the first embodiment. [Figure 2] Diagram showing an example of the layer structure of the sheet of FIG. 1. [Figure 3] Cross-sectional view taken along line D3-D3 of FIG. 1. [Figure 4] Perspective view of the plate of FIG. 1. [Figure 5] Plan view of the heat exchanger of the second embodiment. [Figure 6] Plan view of the heat exchanger of the third embodiment. [Figure 7] Plan view of the heat exchanger of the fourth embodiment. [Figure 8] Cross-sectional view taken along line D8-D8 of FIG. 7. [Figure 9] Plan view of the heat exchanger of the fifth embodiment. [Figure 10] Cross-sectional view taken along line D10-D10 of FIG. 9. [Figure 11] Diagram related to the spacer forming step of the manufacturing method of the heat exchanger of FIG. 9. [Figure 12] Diagram showing the state in which the spacer base material of FIG. 11 is cut. [Figure 13] Figure 9 shows the spacer installation process in the manufacturing method of the heat exchanger. [Figure 14] A plan view of the heat exchanger according to the sixth embodiment. [Figure 15] A cross-sectional view along the line D15-D15 in Figure 14. [Figure 16] A cross-sectional view of a supply member included in a heat exchanger of a modified example of the sixth embodiment. [Figure 17] A cross-sectional view of a supply member included in a heat exchanger of another modified embodiment of the sixth embodiment. [Figure 18] A plan view of a supply member included in a heat exchanger of yet another modification of the sixth embodiment. [Figure 19] A plan view showing the heat exchanger of the sixth embodiment with the modified supply hose connected to the supply member. [Modes for carrying out the invention]

[0017] A heat exchanger according to one embodiment of the present invention will be described below with reference to the drawings.

[0018] <1. First Embodiment> <1-1. Overall configuration of the heat exchanger> Figure 1 is a plan view of the heat exchanger 10 according to this embodiment. The heat exchanger 10 is used to cool or heat an object to be heat exchanged via a heat exchange medium. Cooling or heating an object to be heat exchanged includes maintaining the temperature of the object to be heat exchanged within a predetermined temperature range by repeatedly cooling and heating the object to be heat exchanged. The object to be heat exchanged is, for example, a battery. The battery is, for example, a lithium-ion battery. In this embodiment, the heat exchanger 10 is positioned to be inserted between multiple cells or modules of a lithium-ion battery. In this embodiment, the heat exchanger 10 is used to maintain the temperature of an object to be heat exchanged below a predetermined temperature by cooling the object to be heat exchanged. For this reason, in this embodiment, the heat exchange medium is, for example, cooling water or antifreeze. When the heat exchanger 10 is used to heat an object to be heat exchanged, the heat exchange medium is, for example, hot water. When the heat exchanger 10 is used to maintain the temperature of an object to be heat exchanged within a predetermined temperature range, the heat exchange medium is, for example, cooling water and hot water.

[0019] The heat exchanger 10 is, for example, a pouch type. This allows for greater freedom in shape. Furthermore, the heat exchanger 10 can be made lightweight. Examples of pouch types include three-sided seal type, four-sided seal type, pillow type, or gusset type. The heat exchanger 10 includes a container 20, a supply member 30, a discharge member 40, and a plate 50. Note that in Figure 1, components that are not normally visible from the outside are partially shown with dashed lines for reference. In the following, for the sake of explanation, unless otherwise specified, the vertical direction in Figure 1 will be referred to as the width direction, the direction perpendicular to the width direction in a plan view will be referred to as the left-right direction, and the direction perpendicular to both the width direction and the left-right direction will be referred to as the height direction.

[0020] <1-2. Container composition> The container 20 comprises an internal space S1 and a peripheral seal portion 90. The container 20 is composed of sheets 21 and 22. In a plan view, the outer periphery of the container 20 is heat-sealed and fused to each other, thereby forming the peripheral seal portion 90. This peripheral seal portion 90 forms the internal space S1 of the container 20, which is isolated from the external space. The peripheral seal portion 90 defines the periphery of the internal space S1 of the container 20. The heat sealing method described here may include heating and fusion from a heat source, ultrasonic fusion, etc. In any case, the peripheral seal portion 90 refers to the portion where sheets 21 and 22 are fused and integrated.

[0021] Sheets 21 and 22 are composed of, for example, a resin molded product or a film. The resin molded product can be manufactured by methods such as injection molding, pressure molding, vacuum molding, or blow molding, and in-mold molding may be used to impart design or functionality. The type of resin can be polyolefin, polyester, nylon, ABS, etc. The film can be, for example, a resin film that can be manufactured by methods such as the inflation method or the T-die method, or a resin film laminated onto a metal foil. The film may be stretched or not, and may be a single-layer film or a multi-layer film. The multi-layer film may be manufactured by a coating method, by bonding multiple films together with an adhesive, or by a multi-layer extrusion method.

[0022] As described above, sheets 21 and 22 can be configured in various ways, but in this embodiment, sheets 21 and 22 are made of, for example, the laminate film shown in Figure 2. The laminate film can be a laminate formed by laminating a base layer 1, an adhesive layer 2, a barrier layer 3, a heat-fusible resin layer 4, and an adhesive layer 5. The base layer 1 functions as the base material for sheets 21 and 22, and is typically an insulating resin layer that forms the outer layer of the container 20. The barrier layer 3 has the function of improving the strength of sheets 21 and 22 and preventing at least moisture from entering the internal space S1, and is typically a metal layer made of aluminum alloy foil or the like. The heat-fusible resin layer 4 and the adhesive layer 5 are typically made of a heat-fusible resin such as polyolefin, and form the innermost layer of the container 20. Below, specific examples of the configuration of each layer of the laminate film that constitutes sheets 21 and 22 will be described.

[0023] <1-2-1. Base material layer> In this embodiment, the base layer 1 is a layer provided for purposes such as enabling the sheets 21 and 22 to function as a base material. The base layer 1 is located on the outer layer side of the sheets 21 and 22.

[0024] The material forming the base layer 1 is not particularly limited, as long as it has the function of a base material, that is, at least insulating properties. The base layer 1 can be formed using, for example, a resin, and the resin may contain additives described later.

[0025] When the base layer 1 is formed of resin, the base layer 1 may be, for example, a resin film formed of resin, or a film formed by coating with resin. The resin film may be an unstretched film or a stretched film. Examples of stretched films include uniaxially stretched films and biaxially stretched films, with biaxially stretched films being preferred. Examples of stretching methods for forming a biaxially stretched film include sequential biaxial stretching, inflation stretching, and simultaneous biaxial stretching. Examples of resin coating methods include roll coating, gravure coating, and extrusion coating.

[0026] Examples of resins that form the base layer 1 include polyester, polyamide, polyolefin, epoxy resin, acrylic resin, fluororesin, polyurethane, silicon resin, phenolic resin, and modified versions of these resins. Furthermore, the resin forming the base layer 1 may be a copolymer of these resins, or a modified version of such copolymer. It may also be a mixture of these resins.

[0027] Among these, polyester and polyamide are preferred as resins for forming the base layer 1.

[0028] Examples of polyesters include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyesters. Examples of copolymerized polyesters include copolymerized polyesters with ethylene terephthalate as the main repeating unit. Specifically, examples include copolymerized polyesters polymerized with ethylene isophthalate using ethylene terephthalate as the main repeating unit (hereinafter abbreviated as polyethylene(terephthalate / isophthalate)), polyethylene(terephthalate / adipate), polyethylene(terephthalate / sodium sulfoisophthalate), polyethylene(terephthalate / sodium isophthalate), polyethylene(terephthalate / phenyl-dicarboxylate), and polyethylene(terephthalate / decanedicarboxylate). These polyesters may be used individually or in combination of two or more types.

[0029] Furthermore, specific examples of polyamides include aliphatic polyamides such as nylon 6, nylon 66, nylon 610, nylon 12, nylon 46, and copolymers of nylon 6 and nylon 66; hexamethylenediamine-isophthalic acid-terephthalic acid copolymer polyamides such as nylon 6I, nylon 6T, nylon 6IT, and nylon 6I6T (where I represents isophthalic acid and T represents terephthalic acid), which contain constituent units derived from terephthalic acid and / or isophthalic acid; aromatic polyamides such as polyamide MXD6 (polymetaxylylene adipamide); alicyclic polyamides such as polyamide PACM6 (polybis(4-aminocyclohexyl)methaneadipamide); polyamides copolymerized with lactam components or isocyanate components such as 4,4'-diphenylmethane-diisocyanate; polyesteramide copolymers and polyether esteramide copolymers, which are copolymers of copolymerized polyamides with polyester or polyalkylene ether glycol; and other polymers of these polyamides. These polyamides may be used individually or in combination of two or more types.

[0030] The base layer 1 preferably contains at least one of polyester film, polyamide film, and polyolefin film, preferably at least one of stretched polyester film, stretched polyamide film, and stretched polyolefin film, more preferably at least one of stretched polyethylene terephthalate film, stretched polybutylene terephthalate film, stretched nylon film, and stretched polypropylene film, and even more preferably at least one of biaxially oriented polyethylene terephthalate film, biaxially oriented polybutylene terephthalate film, biaxially oriented nylon film, and biaxially oriented polypropylene film.

[0031] The base layer 1 may be a single layer or may consist of two or more layers. If the base layer 1 consists of two or more layers, the base layer 1 may be a laminate formed by laminating resin films with an adhesive, or it may be a laminate of two or more resin films formed by co-extruding resin. Furthermore, the laminate of two or more resin films formed by co-extruding resin may be used as the base layer 1 in its unstretched state, or it may be used as the base layer 1 after uniaxial stretching or biaxial stretching.

[0032] Specific examples of a laminate of two or more resin films in the base layer 1 include a laminate of polyester film and nylon film, a laminate of two or more nylon films, and a laminate of two or more polyester films. Preferably, a laminate of stretched nylon film and stretched polyester film, a laminate of two or more stretched nylon films, and a laminate of two or more stretched polyester films are preferred. For example, when the base layer 1 is a laminate of two resin films, a laminate of polyester resin film and polyester resin film, a laminate of polyamide resin film and polyamide resin film, or a laminate of polyester resin film and polyamide resin film is preferred, and a laminate of polyethylene terephthalate film and polyethylene terephthalate film, a laminate of nylon film and nylon film, or a laminate of polyethylene terephthalate film and nylon film is more preferred. Furthermore, since polyester resin is less likely to discolor when an electrolyte adheres to its surface, for example, when the base layer 1 is a laminate of two or more resin films, it is preferable that the polyester resin film be located in the outermost layer of the base layer 1.

[0033] If the base layer 1 is a laminate of two or more resin films, the two or more resin films may be laminated with an adhesive in between. Preferred adhesives include those similar to those exemplified in adhesive layer 2 described later. The method for laminating the two or more resin films is not particularly limited, and known methods can be used, such as dry lamination, sandwich lamination, extrusion lamination, and thermal lamination, with dry lamination being preferred. When laminating by dry lamination, it is preferable to use a polyurethane adhesive. In this case, the thickness of the adhesive is, for example, about 2 to 5 μm. Alternatively, an anchor coat layer may be formed on the resin film and then laminated. The anchor coat layer is similar to the adhesive exemplified in adhesive layer 2 described later. In this case, the thickness of the anchor coat layer is, for example, about 0.01 to 1.0 μm.

[0034] Furthermore, at least one of the surface and interior of the base layer 1 may contain additives such as lubricants, flame retardants, antiblocking agents, antioxidants, light stabilizers, tackifiers, and antistatic agents. Only one type of additive may be used, or two or more types may be mixed and used.

[0035] In this embodiment, from the viewpoint of improving the moldability of sheets 21 and 22, it is preferable that a lubricant be present on the surface of the base layer 1. The lubricant is not particularly limited, but amide lubricants are preferred. Specific examples of amide lubricants include saturated fatty acid amides, unsaturated fatty acid amides, substituted amides, methylolamides, saturated fatty acid bisamides, unsaturated fatty acid bisamides, fatty acid ester amides, and aromatic bisamides. Specific examples of saturated fatty acid amides include lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide, and hydroxystearic acid amide. Specific examples of unsaturated fatty acid amides include oleic acid amide and erucic acid amide. Specific examples of substituted amides include N-oleyl palmitic acid amide, N-stearyl stearate amide, N-stearyl oleic acid amide, N-oleyl stearate amide, and N-stearyl erucic acid amide. Specific examples of methylolamides include methylol stearate amide. Specific examples of saturated fatty acid bisamides include methylenebisstearate, ethylenebiscaprate, ethylenebislaurate, ethylenebisstearate, ethylenebishydroxystearate, ethylenebisbehenamide, hexamethylenebisstearate, hexamethylenebisbehenamide, hexamethylenehydroxystearate, N,N'-distearyladipamide, and N,N'-distearylsebacinamide. Specific examples of unsaturated fatty acid bisamides include ethylenebisoleamide, ethylenebiserucamide, hexamethylenebisoleamide, N,N'-dioleyladipamide, and N,N'-dioleylsebacinamide. Specific examples of fatty acid ester amides include stearamidoethylstearate. Specific examples of aromatic bisamides include m-xylylenebisstearate, m-xylylenebishydroxystearate, and N,N'-distearyl isophthalamide. The lubricant may be used alone or in combination of two or more types.

[0036] If a lubricant is present on the surface of the substrate layer 1, the amount present is not particularly limited, but preferably about 3 mg / m². 2 More preferably 4-15 mg / m² 2 To a certain extent, more preferably 5-14 mg / m² 2 The degree can be described as follows.

[0037] The lubricant present on the surface of the base layer 1 may be a lubricant contained in the resin constituting the base layer 1 that has seeped out, or a lubricant may be applied to the surface of the base layer 1.

[0038] The thickness of the base layer 1 is not particularly limited as long as it performs its function as a base material, but for example, it can be about 3 to 50 μm, preferably about 10 to 35 μm. If the base layer 1 is a laminate of two or more resin films, the thickness of each resin film constituting each layer can be preferably about 2 to 25 μm.

[0039] <1-2-2.Adhesive layer> In the sheets 21 and 22 of this embodiment, the adhesive layer 2 is a layer provided between the substrate layer 1 and the barrier layer 3 as needed, for the purpose of improving the adhesion between them.

[0040] The adhesive layer 2 is formed by an adhesive capable of bonding the substrate layer 1 and the barrier layer 3. The adhesive used to form the adhesive layer 2 is not limited, but may be a chemical reaction type, solvent evaporation type, heat melt type, hot pressure type, etc. It may also be a two-component curing adhesive (two-part adhesive), a one-component curing adhesive (one-part adhesive), or a resin that does not undergo a curing reaction. Furthermore, the adhesive layer 2 may be a single layer or a multi-layer layer.

[0041] Specifically, adhesive components included in adhesives include polyesters such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, copolymerized polyester; polyethers; polyurethanes; epoxy resins; phenolic resins; polyamides such as nylon 6, nylon 66, nylon 12, copolymerized polyamides; polyolefin resins such as polyolefins, cyclic polyolefins, acid-modified polyolefins, and acid-modified cyclic polyolefins; polyvinyl acetate; cellulose; (meth)acrylic resins; polyimides; polycarbonates; amino resins such as urea resins and melamine resins; rubbers such as chloroprene rubber, nitrile rubber, and styrene-butadiene rubber; and silicone resins. These adhesive components may be used individually or in combination of two or more. Among these adhesive components, polyurethane adhesives are particularly preferred. Furthermore, the adhesive strength of these adhesive resins can be increased by using an appropriate curing agent. The curing agent is selected appropriately from polyisocyanates, polyfunctional epoxy resins, oxazoline group-containing polymers, polyamine resins, acid anhydrides, etc., depending on the functional groups of the adhesive components.

[0042] Examples of polyurethane adhesives include polyurethane adhesives comprising a main component containing a polyol compound and a curing agent containing an isocyanate compound. Preferably, a two-component curing type polyurethane adhesive is used, in which a polyol such as polyester polyol, polyether polyol, and acrylic polyol is the main component and an aromatic or aliphatic polyisocyanate is the curing agent. Furthermore, as the polyol compound, it is preferable to use a polyester polyol that has hydroxyl groups not only at the ends of the repeating units but also in the side chains. Because the adhesive layer 2 is formed of polyurethane adhesive, the sheets 21 and 22 are given excellent electrolyte resistance, and peeling of the base material layer 1 is suppressed even if electrolyte adheres to the sides.

[0043] Furthermore, the adhesive layer 2 may contain other components as long as they do not impair adhesion, and may include colorants, thermoplastic elastomers, tackifiers, fillers, etc. The inclusion of a colorant in the adhesive layer 2 allows for the coloring of sheets 21 and 22. Known colorants such as pigments and dyes can be used. Additionally, only one type of colorant may be used, or two or more types may be mixed.

[0044] The type of pigment is not particularly limited, as long as it does not impair the adhesion of adhesive layer 2. Examples of organic pigments include azo, phthalocyanine, quinacridone, anthraquinone, dioxazine, indigothioindigo, perinone-perylene, isoindorenine, and benzimidazolon pigments. Examples of inorganic pigments include carbon black, titanium dioxide, cadmium, lead, chromium oxide, and iron pigments. Other examples include fine mica powder and fish scale foil.

[0045] Among colorants, carbon black is preferred, for example, to give the appearance of sheets 21 and 22 a black color.

[0046] The average particle size of the pigment is not particularly limited, but for example, it can be about 0.05 to 5 μm, preferably about 0.08 to 2 μm. The average particle size of the pigment is the median diameter measured by a laser diffraction / scattering particle size distribution analyzer.

[0047] The pigment content in the adhesive layer 2 is not particularly limited as long as the sheets 21 and 22 are colored, and for example, it is about 5 to 60% by mass, preferably 10 to 40% by mass.

[0048] The thickness of the adhesive layer 2 is not particularly limited as long as it can bond the substrate layer 1 and the barrier layer 3, but for example, it is about 1 μm or more and about 2 μm or more. Alternatively, the thickness of the adhesive layer 2 is about 10 μm or less and about 5 μm or less. Preferred ranges for the thickness of the adhesive layer 2 include about 1 to 10 μm, about 1 to 5 μm, about 2 to 10 μm, and about 2 to 5 μm.

[0049] <1-2-3. Colored layer> The colored layer is a layer provided between the base layer 1 and the barrier layer 3 as needed (not shown in the figure). If an adhesive layer 2 is present, the colored layer may be provided between the base layer 1 and the adhesive layer 2, and between the adhesive layer 2 and the barrier layer 3. Alternatively, the colored layer may be provided on the outside of the base layer 1. By providing the colored layer, the sheets 21 and 22 can be colored.

[0050] The colored layer can be formed, for example, by applying an ink containing a coloring agent to the surface of the substrate layer 1 or the surface of the barrier layer 3. Known coloring agents such as pigments and dyes can be used. In addition, only one type of coloring agent may be used, or two or more types may be mixed and used.

[0051] Specific examples of colorants included in the colored layer are the same as those exemplified in the [Adhesive Layer 2] section.

[0052] <1-2-4. Barrier Layer> In sheets 21 and 22, the barrier layer 3 is a layer that at least prevents the intrusion of moisture. .

[0053] Examples of barrier layer 3 include metal foil, vapor-deposited film, and resin layer with barrier properties. Examples of vapor-deposited films include metal vapor-deposited films, inorganic oxide vapor-deposited films, and carbon-containing inorganic oxide vapor-deposited films. Examples of resin layers include fluorine-containing resins such as polymers mainly composed of polyvinylidene chloride, chlorotrifluoroethylene (CTFE), polymers mainly composed of tetrafluoroethylene (TFE), polymers having fluoroalkyl groups, and polymers mainly composed of fluoroalkyl units, as well as ethylene vinyl alcohol copolymers. In addition, a resin film having at least one of these vapor-deposited films and resin layers can also be provided as barrier layer 3. Multiple layers of barrier layer 3 may be provided. It is preferable that barrier layer 3 includes a layer composed of a metal material. Specific examples of metal materials constituting barrier layer 3 include aluminum alloy, stainless steel, titanium steel, and steel plates. When used as a metal foil, it is preferable that it includes at least one of aluminum alloy foil and stainless steel foil.

[0054] From the viewpoint of improving the formability of sheets 21 and 22, the aluminum alloy foil is more preferably a soft aluminum alloy foil composed of, for example, an annealed aluminum alloy, and from the viewpoint of further improving formability, it is more preferably an aluminum alloy foil containing iron. In an iron-containing aluminum alloy foil (100% by mass), the iron content is preferably 0.1 to 9.0% by mass, and more preferably 0.5 to 2.0% by mass. By having an iron content of 0.1% by mass or more, sheets 21 and 22 with better formability can be obtained. By having an iron content of 9.0% by mass or less, sheets 21 and 22 with better flexibility can be obtained. Examples of soft aluminum alloy foils include aluminum alloy foils having compositions specified in JIS H4160:1994 A8021H-O, JIS H4160:1994 A8079H-O, JIS H4000:2014 A8021P-O, or JIS H4000:2014 A8079P-O. Silicon, magnesium, copper, manganese, etc., may also be added as needed. Softening can be achieved through annealing or other treatments.

[0055] Furthermore, examples of stainless steel foils include austenitic, ferritic, austenitic-ferritic, martensitic, and precipitation-hardening stainless steel foils. Moreover, from the viewpoint of providing sheets 21 and 22 with excellent formability, it is preferable that the stainless steel foil be made of austenitic stainless steel.

[0056] Specific examples of austenitic stainless steels that make up stainless steel foil include SUS304, SUS301, and SUS316L, with SUS304 being particularly preferred among these.

[0057] In the case of metal foil, the thickness of the barrier layer 3 should at least function as a barrier layer that prevents moisture from penetrating, for example, about 9 to 200 μm. The thickness of the barrier layer 3 is preferably about 85 μm or less, more preferably about 50 μm or less, even more preferably about 40 μm or less, and particularly preferably about 35 μm or less. Also, the thickness of the barrier layer 3 is preferably about 10 μm or more, even more preferably about 20 μm or more, and more preferably about 25 μm or more. Preferred ranges for the thickness include about 10 to 85 μm, about 10 to 50 μm, about 10 to 40 μm, about 10 to 35 μm, about 20 to 85 μm, about 20 to 50 μm, about 20 to 40 μm, about 20 to 35 μm, about 25 to 85 μm, about 25 to 50 μm, about 25 to 40 μm, and about 25 to 35 μm. When the barrier layer 3 is made of aluminum alloy foil, the above range is particularly preferred. Furthermore, when the barrier layer 3 is made of stainless steel foil, the thickness of the stainless steel foil is preferably about 60 μm or less, more preferably about 50 μm or less, even more preferably about 40 μm or less, even more preferably about 30 μm or less, and particularly preferably about 25 μm or less. Furthermore, the thickness of the stainless steel foil is preferably about 10 μm or more, more preferably about 15 μm or more. Furthermore, preferred thickness ranges for the stainless steel foil include about 10 to 60 μm, about 10 to 50 μm, about 10 to 40 μm, about 10 to 30 μm, about 10 to 25 μm, about 15 to 60 μm, about 15 to 50 μm, about 15 to 40 μm, about 15 to 30 μm, and about 15 to 25 μm.

[0058] Furthermore, if the barrier layer 3 is a metal foil, it is preferable to provide a corrosion-resistant coating on at least the side opposite to the substrate layer to prevent dissolution and corrosion. The barrier layer 3 may also have a corrosion-resistant coating on both sides. Here, a corrosion-resistant coating refers to a thin film that provides corrosion resistance to the barrier layer by performing a corrosion prevention treatment on the surface of the barrier layer, such as a hot water modification treatment like boehmite treatment, a chemical conversion treatment, anodizing treatment, plating treatment with nickel or chromium, or coating agent application. One type of treatment may be performed to form the corrosion-resistant coating, or two or more types may be combined. In addition, it is possible to have multiple layers instead of just one. Furthermore, among these treatments, hot water modification treatment and anodizing treatment are treatments that dissolve the surface of the metal foil with a treatment agent and form a metal compound with excellent corrosion resistance. Note that these treatments may also be included in the definition of chemical conversion treatment. Also, if the barrier layer 3 has a corrosion-resistant coating, the barrier layer 3 includes the corrosion-resistant coating.

[0059] The corrosion-resistant coating prevents delamination between the barrier layer (e.g., aluminum alloy foil) and the base layer during the molding of sheets 21 and 22, prevents dissolution and corrosion of the barrier layer surface due to hydrogen fluoride generated by the reaction of electrolyte and water, and in particular prevents the dissolution and corrosion of aluminum oxide present on the barrier layer surface when the barrier layer is aluminum alloy foil, and improves the adhesion (wettability) of the barrier layer surface, thereby preventing delamination between the base layer and the barrier layer during heat sealing and molding.

[0060] Various corrosion-resistant coatings are known to be formed by chemical conversion treatments, mainly including corrosion-resistant coatings containing at least one of the following: phosphates, chromates, fluorides, triazinethiol compounds, and rare earth oxides. Examples of chemical conversion treatments using phosphates and chromates include chromate treatment, phosphate chromate treatment, phosphate-chromate treatment, and chromate treatment. Examples of chromium compounds used in these treatments include chromium nitrate, chromium fluoride, chromium sulfate, chromium acetate, chromium oxalate, chromium biphosphate, acetyl acetate chromate, chromium chloride, and potassium chromium sulfate. Examples of phosphorus compounds used in these treatments include sodium phosphate, potassium phosphate, ammonium phosphate, and polyphosphate. Examples of chromate treatments include etching chromate treatment, electrolytic chromate treatment, and coating-type chromate treatment, with coating-type chromate treatment being preferred. This coating-type chromate treatment involves first degreasing at least the inner surface of a barrier layer (e.g., aluminum alloy foil) using a well-known treatment method such as alkaline immersion, electrolytic cleaning, acid cleaning, electrolytic acid cleaning, or acid activation. Then, a treatment solution mainly composed of metal phosphate salts such as chromium phosphate, titanium phosphate, zirconium phosphate, and zinc phosphate, or mixtures thereof, or a treatment solution mainly composed of nonmetallic phosphates and mixtures thereof, or a treatment solution consisting of these with synthetic resins, etc., is applied to the degreased surface using a well-known coating method such as roll coating, gravure printing, or immersion, and then dried. Various solvents can be used as the treatment solution, such as water, alcohol-based solvents, hydrocarbon-based solvents, ketone-based solvents, ester-based solvents, and ether-based solvents, with water being preferred. Furthermore, examples of resin components used in this process include polymers such as phenolic resins and acrylic resins, and examples of chromate treatment using an amination phenol polymer having repeating units represented by the following general formulas (1) to (4). In this amination phenol polymer, the repeating units represented by the following general formulas (1) to (4) may be included individually or in any combination of two or more types.The acrylic resin is preferably polyacrylic acid, acrylate methacrylate copolymer, acrylate maleic acid copolymer, acrylate styrene copolymer, or derivatives thereof such as sodium salts, ammonium salts, or amine salts. Derivatives of polyacrylic acid, such as ammonium salts, sodium salts, or amine salts of polyacrylic acid, are particularly preferred. In this embodiment, polyacrylic acid refers to a polymer of acrylic acid. Furthermore, the acrylic resin is also preferably a copolymer of acrylic acid and a dicarboxylic acid or dicarboxylic acid anhydride, and also preferably an ammonium salt, sodium salt, or amine salt of a copolymer of acrylic acid and a dicarboxylic acid or dicarboxylic acid anhydride. Only one type of acrylic resin may be used, or two or more types may be mixed and used.

[0061] [ka]

[0062] [ka]

[0063] [ka]

[0064] [ka]

[0065] In general formulas (1) to (4), X represents a hydrogen atom, a hydroxyl group, an alkyl group, a hydroxyalkyl group, an allyl group, or a benzyl group. Also, R 1 and R 2 Each of these represents a hydroxyl group, an alkyl group, or a hydroxyalkyl group, either identical or different. In general formulas (1) to (4), X and R 1 and R 2Examples of the alkyl group represented by [alkyl group] include linear or branched alkyl groups having 1 to 4 carbon atoms such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, and tert-butyl group. Further, X, R 1 and R 2 Examples of the hydroxyalkyl group represented by [hydroxyalkyl group] include linear or branched alkyl groups having 1 to 4 carbon atoms substituted with one hydroxy group such as hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group, 1-hydroxypropyl group, 2-hydroxypropyl group, 3-hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 3-hydroxybutyl group, and 4-hydroxybutyl group. In General Formulas (1) to (4), the alkyl groups and hydroxyalkyl groups represented by X, R 1 and R 2 may be the same or different from each other. In General Formulas (1) to (4), X is preferably a hydrogen atom, a hydroxy group, or a hydroxyalkyl group. The number average molecular weight of the aminoated phenol polymer having the repeating unit represented by General Formulas (1) to (4) is preferably about 500 to 1,000,000, and more preferably about 1,000 to 20,000. The aminoated phenol polymer is produced, for example, by polycondensing a phenol compound or a naphthol compound and formaldehyde to produce a polymer composed of the repeating unit represented by the above General Formula (1) or General Formula (3), and then introducing a functional group (-CH2NR 1 R 2 ) into the polymer obtained above using formaldehyde and an amine (R 1 R 2 NH). The aminoated phenol polymer is used alone or in combination of two or more.

[0066] Another example of a corrosion-resistant coating is a thin film formed by a coating-type corrosion prevention treatment, which involves applying a coating agent containing at least one selected from the group consisting of rare earth element oxide sols, anionic polymers, and cationic polymers. The coating agent may further contain phosphoric acid or phosphate, and a crosslinking agent for crosslinking the polymer. In the rare earth element oxide sol, fine particles of rare earth element oxides (for example, particles with an average particle size of 100 nm or less) are dispersed in a liquid dispersion medium. Examples of rare earth element oxides include cerium oxide, yttrium oxide, neodymium oxide, and lanthanum oxide, with cerium oxide being preferred from the viewpoint of further improving adhesion. The rare earth element oxides contained in the corrosion-resistant coating can be used individually or in combination of two or more. Various solvents can be used as the liquid dispersion medium for the rare earth element oxide sol, such as water, alcohol-based solvents, hydrocarbon-based solvents, ketone-based solvents, ester-based solvents, and ether-based solvents, with water being preferred. Preferred cationic polymers include, for example, polyethyleneimine, ionic polymer complexes comprising polyethyleneimine and a polymer having a carboxylic acid, primary amine-grafted acrylic resins obtained by graft polymerization of a primary amine onto an acrylic main skeleton, polyallylamine or its derivatives, and amination phenols. Preferred anionic polymers are poly(meth)acrylic acid or its salts, or copolymers mainly composed of (meth)acrylic acid or its salts. Furthermore, the crosslinking agent is preferably at least one selected from the group consisting of a compound having one of the functional groups of isocyanate, glycidyl, carboxyl, or oxazoline, and a silane coupling agent. Additionally, the phosphoric acid or phosphate is preferably condensed phosphoric acid or condensed phosphate.

[0067] An example of a corrosion-resistant coating is one formed by dispersing metal oxides such as aluminum oxide, titanium oxide, cerium oxide, and tin oxide, or fine particles of barium sulfate, in phosphoric acid, applying this mixture to the surface of a barrier layer, and then baking it at a temperature of 150°C or higher.

[0068] The corrosion-resistant coating may, if necessary, be a laminated structure in which at least one of a cationic polymer and an anionic polymer is further laminated. Examples of cationic and anionic polymers include those mentioned above.

[0069] Furthermore, the composition of the corrosion-resistant coating can be analyzed, for example, using time-of-flight secondary ion mass spectrometry.

[0070] The amount of corrosion-resistant film to be formed on the surface of the barrier layer 3 in the chemical conversion treatment is not particularly limited, but for example, in the case of coating-type chromate treatment, the surface of the barrier layer 3 is 1 m 2 It is desirable that the product contains, for example, about 0.5 to 50 mg of chromium-based chromium, preferably about 1.0 to 40 mg of phosphorus-based chromium

[0071] The thickness of the corrosion-resistant coating is not particularly limited, but from the viewpoint of the cohesive force of the coating and the adhesion force with the barrier layer and the heat-fusible resin layer, it is preferably about 1 nm to 20 μm, more preferably about 1 nm to 100 nm, and even more preferably about 1 nm to 50 nm. The thickness of the corrosion-resistant coating can be measured by observation with a transmission electron microscope, or by a combination of observation with a transmission electron microscope and energy-dispersive X-ray spectroscopy or electron beam energy loss spectroscopy. By analyzing the composition of the corrosion-resistant coating using time-of-flight secondary ion mass spectrometry, for example, secondary ions consisting of Ce, P, and O (e.g., Ce2PO4) can be identified. + CePO4 - (at least one of the above), or, for example, a secondary ion consisting of Cr, P, and O (e.g., CrPO2) + , CrPO4 - Peaks originating from at least one of the following are detected.

[0072] The chemical conversion treatment is carried out by applying a solution containing compounds used to form a corrosion-resistant film to the surface of the barrier layer using methods such as bar coating, roll coating, gravure coating, or immersion, and then heating the barrier layer to a temperature of approximately 70-200°C. Alternatively, before applying the chemical conversion treatment to the barrier layer, it may be subjected to a degreasing treatment using methods such as alkaline immersion, electrolytic cleaning, acid cleaning, or electrolytic acid cleaning. This degreasing treatment makes it possible to perform the chemical conversion treatment on the surface of the barrier layer more efficiently. Furthermore, by using an acid degreasing agent, which is a fluorine-containing compound dissolved in an inorganic acid, it is possible to not only degrease the metal foil but also form a fluoride of the passive metal; in such cases, only the degreasing treatment may be performed.

[0073] <1-2-5. Heat-adhesive layer> In the sheets 21 and 22 of this embodiment, the heat-sealable resin layer 4 is the innermost layer and is a layer (sealant layer) that performs the function of sealing the plate 50 by heat-sealing the heat-sealable resin layers together during the manufacture of the heat exchanger 10.

[0074] The heat-fusible resin layer 4 contains polypropylene and polyethylene. In the sheets 21 and 22 of this embodiment, a sea-island structure is observed in the cross-sectional image obtained using a scanning electron microscope of the cross-section of the heat-fusible resin layer 4 in a direction parallel to TD and in the thickness direction y.

[0075] Examples of propylene include homopolypropylene, polypropylene block copolymers (e.g., propylene-ethylene block copolymer, propylene-butene block copolymer, propylene-ethylene-butene block copolymer, preferably propylene-ethylene block copolymer), polypropylene random copolymer (e.g., propylene-ethylene random copolymer, propylene-butene random copolymer, propylene-ethylene-butene random copolymer, preferably propylene-ethylene random copolymer), and propylene-α-olefin copolymer. Examples of ethylene include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, and ethylene-α-olefin copolymer. The polypropylene and polyethylene contained in the heat-fusible resin layer 4 may be one type or two or more types.

[0076] The heat-sealable resin layer 4 is preferably formed from a polypropylene resin composition containing 45% by mass or less of polyethylene. The polyethylene content is, for example, about 45% by mass or less, preferably about 30% by mass or less, more preferably about 20% by mass or less, and also preferably about 5% by mass or more, more preferably about 10% by mass or more. Preferred ranges include about 5-45% by mass, about 5-30% by mass, about 5-20% by mass, about 10-45% by mass, about 10-30% by mass, and about 10-20% by mass. The polypropylene content is, for example, 95% by mass or less, and 90% by mass or less. The polypropylene content is, for example, 55% by mass or more, 70% by mass or more, and 80% by mass or more. Preferred ranges for the polypropylene content include about 55-95% by mass, about 70-95% by mass, about 80-95% by mass, about 55-90% by mass, about 70-90% by mass, and about 80-90% by mass. Furthermore, the mass ratio of polypropylene to polyethylene in the polypropylene resin composition is preferably about 5 to 80 parts by mass, more preferably about 5 to 45 parts by mass, and even more preferably about 10 to 30 parts by mass of polyethylene per 100 parts by mass of polypropylene.

[0077] The heat-sealable resin layer 4 may contain other resins in addition to polypropylene and polyethylene. Examples of other resins include acid-modified polyolefins.

[0078] Acid-modified polyolefins are polymers that have been modified by block polymerization or graft polymerization of polyolefins with an acid component.

[0079] Examples of polyolefins that can be acid-modified include polyethylene such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; ethylene-α-olefin copolymers; polypropylene such as homopolypropylene, block copolymers of polypropylene (e.g., block copolymer of propylene and ethylene), and random copolymers of polypropylene (e.g., random copolymer of propylene and ethylene); propylene-α-olefin copolymers; and ethylene-butene-propylene terpolymers. Among these, polypropylene is preferred. When the polyolefin resin is a copolymer, it may be a block copolymer or a random copolymer. These polyolefin resins may be used individually or in combination of two or more.

[0080] Furthermore, acid-modified polyolefins can also be copolymers obtained by copolymerizing the aforementioned polyolefin with polar molecules such as acrylic acid or methacrylic acid, or polymers such as crosslinked polyolefins. Examples of acid components used for acid modification include carboxylic acids or their anhydrides, such as maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, and itaconic anhydride.

[0081] Acid-modified polyolefins may also be acid-modified cyclic polyolefins. Acid-modified cyclic polyolefins are polymers obtained by copolymerizing a portion of the monomers constituting a cyclic polyolefin with an acid component, or by block polymerization or graft polymerization of an acid component to a cyclic polyolefin. The cyclic polyolefin to be acid-modified is the same as described above. Furthermore, the acid component used for acid modification is the same as the acid component used for modifying the polyolefin described above.

[0082] Preferred acid-modified polyolefins include polyolefins modified with carboxylic acids or their anhydrides, polypropylenes modified with carboxylic acids or their anhydrides, maleic anhydride-modified polyolefins, and maleic anhydride-modified polypropylenes.

[0083] The heat-sealable resin layer 4 may be formed as a single layer, or it may be formed as two or more layers of the same or different resins.

[0084] Furthermore, the heat-fusible resin layer 4 may contain a lubricant or the like as needed. When the heat-fusible resin layer 4 contains a lubricant, the moldability of the sheets 21 and 22 can be improved. The lubricant is not particularly limited, and known lubricants can be used. The lubricant may be used alone or in combination of two or more types.

[0085] The lubricant is not particularly limited, but amide-based lubricants are preferred. Specific examples of lubricants include those exemplified in base layer 1. The lubricant may be used alone or in combination of two or more types.

[0086] When a lubricant is present on the surface of the heat-fusible resin layer 4, the amount present is not particularly limited, but from the viewpoint of improving the moldability of sheets 21 and 22, it is preferably 10 to 50 mg / m². 2 To a certain extent, more preferably 15-40 mg / m² 2 The degree can be described as follows.

[0087] The lubricant present on the surface of the heat-fusible resin layer 4 may be a lubricant contained in the resin constituting the heat-fusible resin layer 4 that has seeped out, or a lubricant may be applied to the surface of the heat-fusible resin layer 4.

[0088] Furthermore, the thickness of the heat-fusible resin layer 4 is not particularly limited as long as the heat-fusible resin layers heat-fuse together to seal the plate 50, but for example, it can be about 100 μm or less, preferably about 85 μm or less, and more preferably about 15 to 85 μm. For example, if the thickness of the adhesive layer 5 described later is 10 μm or more, the thickness of the heat-fusible resin layer 4 can be preferably about 85 μm or less, and more preferably about 15 to 45 μm. For example, if the thickness of the adhesive layer 5 described later is less than 10 μm or if the adhesive layer 5 is not provided, the thickness of the heat-fusible resin layer 4 can be preferably about 20 μm or more, and more preferably about 35 to 85 μm.

[0089] The heat-fusible resin layer 4 is preferably formed by melt extrusion molding. Furthermore, if there is an adhesive layer 5 described later, it is preferable that the adhesive layer 5 and the heat-fusible resin layer 4 are formed by melt co-extrusion molding. In this embodiment, it is preferable to suppress the crystal growth of polyethylene in polypropylene by rapidly cooling the molten resin that forms the heat-fusible resin layer 4. When the adhesive layer 5 and the heat-fusible resin layer 4 are formed by melt co-extrusion molding, it is preferable that the thickness of the adhesive layer 5 be 15 to 45 μm and the thickness of the heat-fusible resin layer 4 be 15 to 45 μm.

[0090] <1-2-6.Adhesive layer> In the sheets 21 and 22 of this embodiment, the adhesive layer 5 is a layer provided as needed between the barrier layer 3 (or acid-resistant film) and the heat-fusible resin layer 4 in order to firmly bond them together.

[0091] The adhesive layer 5 is formed of a resin capable of bonding the barrier layer 3 and the heat-fusible resin layer 4. The resin used to form the adhesive layer 5 can be the same as the adhesive exemplified in the adhesive layer 2. Preferably, the resin used to form the adhesive layer 5 contains a polyolefin skeleton, such as the polyolefin and acid-modified polyolefin exemplified in the heat-fusible resin layer 4. The presence of a polyolefin skeleton in the resin constituting the adhesive layer 5 can be analyzed by methods such as infrared spectroscopy and gas chromatography-mass spectrometry, and the analytical method is not particularly limited. Furthermore, when the resin constituting the adhesive layer 5 is analyzed by infrared spectroscopy, it is preferable to detect a peak originating from maleic anhydride. For example, when maleic anhydride-modified polyolefin is measured by infrared spectroscopy, a peak originating from maleic anhydride is detected at wavenumber 1760 cm⁻¹. -1 Nearby wave frequency 1780cm -1 A peak originating from maleic anhydride is detected in the vicinity. However, if the degree of acid denaturation is low, the peak may become small and not be detected. In that case, analysis is possible by nuclear magnetic resonance spectroscopy.

[0092] From the viewpoint of firmly bonding the barrier layer 3 and the heat-fusible resin layer 4, the adhesive layer 5 preferably contains an acid-modified polyolefin. Particularly preferred as the acid-modified polyolefin are polyolefins modified with a carboxylic acid or its anhydride, polypropylenes modified with a carboxylic acid or its anhydride, maleic anhydride-modified polyolefins, and maleic anhydride-modified polypropylenes.

[0093] Furthermore, from the viewpoint of reducing the thickness of sheets 21 and 22 while providing sheets 21 and 22 with excellent shape stability after molding, it is more preferable that the adhesive layer 5 is a cured product of a resin composition containing an acid-modified polyolefin and a curing agent. The above-mentioned examples are preferred as examples of acid-modified polyolefins.

[0094] Furthermore, the adhesive layer 5 is preferably a cured product of a resin composition comprising an acid-modified polyolefin and at least one selected from the group consisting of compounds having isocyanate groups, compounds having oxazoline groups, and compounds having epoxy groups, and is particularly preferably a cured product of a resin composition comprising an acid-modified polyolefin and at least one selected from the group consisting of compounds having isocyanate groups and compounds having epoxy groups. Furthermore, the adhesive layer 5 preferably contains at least one selected from the group consisting of polyurethane, polyester, and epoxy resin, and more preferably contains polyurethane and epoxy resin. As polyester, for example, amide ester resin is preferred. Amide ester resin is generally produced by the reaction of carboxyl groups and oxazoline groups. The adhesive layer 5 is more preferably a cured product of a resin composition comprising at least one of these resins and the acid-modified polyolefin. Furthermore, if unreacted compounds containing isocyanate groups, compounds containing oxazoline groups, or curing agents such as epoxy resin remain in the adhesive layer 5, the presence of these unreacted compounds can be confirmed by methods selected from, for example, infrared spectroscopy, Raman spectroscopy, or time-of-flight secondary ion mass spectrometry (TOF-SIMS).

[0095] Furthermore, from the viewpoint of further improving the adhesion between the barrier layer 3 and the adhesive layer 5, it is preferable that the adhesive layer 5 is a cured product of a resin composition containing a curing agent having at least one selected from the group consisting of oxygen atoms, heterocyclic rings, C=N bonds, and COC bonds. Examples of curing agents having heterocyclic rings include curing agents having oxazoline groups and curing agents having epoxy groups. Examples of curing agents having C=N bonds include curing agents having oxazoline groups and curing agents having isocyanate groups. Examples of curing agents having COC bonds include curing agents having oxazoline groups, curing agents having epoxy groups, and polyurethane. The fact that the adhesive layer 5 is a cured product of a resin composition containing these curing agents can be confirmed by methods such as gas chromatography-mass spectrometry (GCMS), infrared spectroscopy (IR), time-of-flight secondary ion mass spectrometry (TOF-SIMS), and X-ray photoelectron spectroscopy (XPS).

[0096] While there are no particular limitations on the compound having an isocyanate group, polyfunctional isocyanate compounds are preferred from the viewpoint of effectively improving the adhesion between the barrier layer 3 and the adhesive layer 5. The polyfunctional isocyanate compound is not particularly limited as long as it is a compound having two or more isocyanate groups. Specific examples of polyfunctional isocyanate curing agents include pentane diisocyanate (PDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymerized or nurated versions thereof, mixtures thereof, and copolymers with other polymers. Adducts, burettes, and isocyanurates are also examples.

[0097] The content of the compound having an isocyanate group in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and more preferably in the range of 0.5 to 40% by mass, of the resin composition constituting the adhesive layer 5. This effectively enhances the adhesion between the barrier layer 3 and the adhesive layer 5.

[0098] Compounds containing an oxazoline group are not particularly limited as long as they have an oxazoline skeleton. Specific examples of compounds containing an oxazoline group include those with a polystyrene main chain and those with an acrylic main chain. Commercially available examples include the Epocross series manufactured by Nippon Shokubai Co., Ltd.

[0099] The proportion of the compound having an oxazoline group in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and more preferably in the range of 0.5 to 40% by mass, of the resin composition constituting the adhesive layer 5. This effectively enhances the adhesion between the barrier layer 3 and the adhesive layer 5.

[0100] Examples of compounds having epoxy groups include epoxy resins. The epoxy resin is not particularly limited as long as it is capable of forming a crosslinked structure by the epoxy groups present in the molecule; known epoxy resins can be used. The weight-average molecular weight of the epoxy resin is preferably around 50 to 2000, more preferably around 100 to 1000, and even more preferably around 200 to 800. In the first disclosure, the weight-average molecular weight of the epoxy resin is the value measured by gel permeation chromatography (GPC) under conditions using polystyrene as a standard sample.

[0101] Specific examples of epoxy resins include glycidyl ether derivatives of trimethylolpropane, bisphenol A diglycidyl ether, modified bisphenol A diglycidyl ether, novolac glycidyl ether, glycerin polyglycidyl ether, and polyglycerin polyglycidyl ether. Epoxy resins may be used individually or in combination of two or more types.

[0102] The proportion of epoxy resin in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and more preferably in the range of 0.5 to 40% by mass, of the resin composition constituting the adhesive layer 5. This effectively enhances the adhesion between the barrier layer 3 and the adhesive layer 5.

[0103] The polyurethane is not particularly limited, and any known polyurethane can be used. The adhesive layer 5 may be, for example, a cured product of a two-component polyurethane.

[0104] The proportion of polyurethane in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and more preferably in the range of 0.5 to 40% by mass, of the resin composition constituting the adhesive layer 5. This effectively enhances the adhesion between the barrier layer 3 and the adhesive layer 5 in an atmosphere where components that induce corrosion of the barrier layer, such as electrolytes, are present.

[0105] Furthermore, if the adhesive layer 5 is a cured product of a resin composition containing at least one compound selected from the group consisting of a compound having an isocyanate group, a compound having an oxazoline group, and an epoxy resin, and the acid-modified polyolefin, the acid-modified polyolefin functions as the main agent, and the compound having an isocyanate group, the compound having an oxazoline group, and the compound having an epoxy group each function as a curing agent.

[0106] The thickness of the adhesive layer 5 is preferably about 50 μm or less, about 45 μm or less, about 30 μm or less, about 20 μm or less, or about 5 μm or less. Alternatively, the thickness of the adhesive layer 5 is preferably about 0.1 μm or more, about 0.5 μm or more, about 5 μm or more, about 10 μm or more, or about 15 μm or more. Preferably, the thickness range includes approximately 0.1 to 50 μm, 0.1 to 45 μm, 0.1 to 30 μm, 0.1 to 20 μm, 0.1 to 5 μm, 0.5 to 50 μm, 0.5 to 45 μm, 0.5 to 30 μm, 0.5 to 20 μm, 0.5 to 5 μm, 5 to 50 μm, 5 to 45 μm, 5 to 30 μm, 5 to 20 μm, 10 to 50 μm, 10 to 45 μm, 10 to 30 μm, 10 to 20 μm, 15 to 50 μm, 15 to 45 μm, 15 to 30 μm, and 15 to 20 μm.

[0107] More specifically, in the case of adhesives exemplified in adhesive layer 2, or cured products of acid-modified polyolefin and a curing agent, the thickness is preferably about 1 to 10 μm, more preferably about 1 to 5 μm. In particular, when using resins exemplified in heat-fusible resin layer 4 (such as acid-modified polyolefin), the thickness is preferably about 5 to 50 μm, 5 to 45 μm, 10 to 50 μm, 10 to 45 μm, 15 to 50 μm, or 15 to 45 μm. When adhesive layer 5 is an adhesive exemplified in adhesive layer 2, or a cured product of a resin composition containing acid-modified polyolefin and a curing agent, for example, adhesive layer 5 can be formed by applying the resin composition and curing it by heating or the like. When using resins exemplified in heat-fusible resin layer 4, for example, it can be suitably formed by melt co-extrusion molding of heat-fusible resin layer 4 and adhesive layer 5.

[0108] While a specific example using polyolefin was given for the adhesive layer 5 contained in the laminate film, the materials constituting the adhesive layer 5 are not limited to this. When heating the object to be heat-exchanged, a resin with a high glass transition point or melting point can be selected as the material constituting the adhesive layer 5 from the viewpoint of heat resistance. Furthermore, since it is more preferable for the plate 50 and the container 20 to be joined, the material constituting the adhesive layer 5 can be selected as a material that can be joined to the plate 50.

[0109] The container 20 of this embodiment has the shape shown in Figure 3 and is manufactured by heat-sealing a flat sheet 21 and a tray-shaped sheet 22, which is superimposed on the sheet 21, along the outer circumference in a plan view. The sheet 22 includes an annular flange portion 22A corresponding to the outer circumference in a plan view, and a molded portion 22B that is continuous with the inner edge of the flange portion 22A and bulges upward from there. The sheets 21 and 22 are superimposed so that their outer edges coincide. In this state, a predetermined area including the outer edge of the sheet 21 and the flange portion 22A of the sheet 22 are heat-sealed to form a single unit, thereby forming a peripheral seal portion 90. The peripheral seal portion 90 extends around the entire circumference of the container 20 and is formed in an annular shape. Note that the container 20 may have a tray-shaped sheet 21 and a flat sheet 22, or both sheets 21 and 22 may be tray-shaped. In this embodiment, for example, if the object to be heat-exchanged catches fire, the heat exchange medium can be removed and the object to be heat-exchanged can be extinguished by rupturing the portion of the sheets 21 and 22 that includes the peripheral seal portion 90 so that the internal space S1 is opened.

[0110] <1-3. Composition of Supply Components> The supply member 30 is attached to the container 20 so as to connect the internal space S1 with the outside. The supply member 30 is, for example, a spout. The supply member 30 has an inlet 31 and an outlet 32. The inlet 31 is located outside the container 20. The outlet 32 ​​is located in the internal space S1. A supply hose 110 is attached to the inlet 31 to supply the heat exchange medium to the container 20. The heat exchange medium supplied by the supply hose 110 flows into the internal space S1 through the inlet 31 and outlet 32 ​​of the supply member 30.

[0111] <1-4. Configuration of discharge components> The discharge member 40 is attached to the container 20 so as to connect the internal space S1 with the outside. The discharge member 40 is, for example, a spout. The discharge member 40 has an inlet 41 and an outlet 42. The inlet 41 is located in the internal space S1. The outlet 42 is located outside the container 20. A discharge hose 120 is attached to the outlet 42 to discharge the heat exchange medium from the container 20. The heat exchange medium that has passed through the internal space S1 flows through the inlet 41 and outlet 42 of the discharge member 40 into the discharge hose 120.

[0112] The materials constituting the supply member 30 and the discharge member 40 are, for example, synthetic resins or metals. Examples of synthetic resins include polyester, polyolefin, polyamide, polyimide, polymethyl terpene, polyphenylene oxide, polysulfone, polyethersulfone, polyphenylsulfone, polyarylate, polyetheretherketone, polyphenylene sulfide, fluororesin, polyarylate, etc. Specifically, polyolefins include medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene-α·olefin copolymer, polypropylene, polybutene, polyisobutene, polyisobutylene, polybutadiene, polyisoprene, ethylene-methacrylic acid copolymer, or copolymers of ethylene and unsaturated carboxylic acids such as ethylene-acrylic acid copolymer. Examples of metals include aluminum alloy, copper alloy, stainless steel, titanium steel, and steel plates. The supply member 30 is sandwiched between sheets 21 and 22 via a pair of adhesive films 100 at the left end of the peripheral seal portion 90. The discharge member 40 is also sandwiched between sheets 21 and 22 at the right end of the peripheral sealing portion 90 via a pair of adhesive films 100.

[0113] <1-5. Composition of the adhesive film> The adhesive film 100 is configured to adhere to the sheets 21 and 22, the supply member 30, and the discharge member 40. By using the adhesive film 100, the supply member 30 and discharge member 40 and the innermost layer (heat-fusible resin layer 4) of the sheets 21 and 22 can be fixed together even if they are made of different materials. The adhesive film 100 is initially fused and fixed to the supply member 30 and discharge member 40 to integrate them, and then the supply member 30 and discharge member 40, to which the adhesive film 100 is fixed, are sandwiched between the sheets 21 and 22 and fused together to form the integrated structure. The portion of the peripheral seal portion 90 that sandwiches the supply member 30 and the adhesive film 100 is an integrated structure of sheet 22, the supply member 30, the pair of adhesive films 100, and sheet 21. Hereinafter, the portion of the peripheral seal portion 90 that extends in the width direction, including the portion sandwiching the supply member 30 and the adhesive film 100, may be referred to as the left seal portion 91. The portion of the peripheral seal portion 90 that sandwiches the discharge member 40 and the adhesive film 100 is an integrated sheet 22, discharge member 40, pair of adhesive films 100, and sheet 21. Hereinafter, the portion of the peripheral seal portion 90 that extends in the width direction and includes the portion that sandwiches the discharge member 40 and the adhesive film 100 may be referred to as the right side seal portion 92. The portion of the peripheral seal portion 90 that sandwiches only the pair of adhesive films 100 is an integrated sheet 22, pair of adhesive films 100, and sheet 21. Hereinafter, the portion of the peripheral seal portion 90 in which only sheets 21 and sheet 22 are fused together and which extends in the left-right direction may be referred to as the lateral seal portion 93.

[0114] Various known adhesive films can be used as the adhesive film 100. The adhesive film 100 may be, for example, a single-layer film of modified polypropylene (PPa), or a laminated film of multiple layers of PPa, polyethylene naphthalate (PEN), and PPa. Alternatively, a laminated film of multiple layers of PPa, polypropylene (PP), and PPa may be used. In addition, metal-adhering resins such as maleic anhydride-modified polypropylene resin, ionomer resin, modified polyethylene, and EVA can be used instead of the above-mentioned PPa resin. In this embodiment, the adhesive film 100 is a laminated film with a three-layer structure containing a core material consisting of PPa / polyester fiber / PPa. Various known materials other than the polyester fiber mentioned above can be used as the core material. For example, the core material may be a polyester film such as PEN, polyethylene terephthalate, or polybutylene terephthalate, or it may be a polyamide fiber or a carbon fiber.

[0115] <1-6. Plate composition> Figure 4 is a perspective view of the plate 50. The plate 50 is placed in the internal space S1 (see Figure 1), and forms a flow path 51 for the heat exchange medium in the internal space S1. The material constituting the plate 50 is a material that does not substantially deform even when external forces of a magnitude expected under the normal operating environment of the heat exchanger 10 are applied. The material constituting the plate 50 is a synthetic resin, a metal, or a metal oxide. Examples of synthetic resins and metals are the materials exemplified in the description of the supply member 30 and the discharge member 40. Examples of metal oxides are alumina, silica, titania, or zirconia.

[0116] The shape of the plate 50 in plan view can be arbitrarily selected. In this embodiment, the shape of the plate 50 in plan view is rectangular. The shape of the plate 50 in plan view may be a square, a triangle, a polygon with pentagons or more, a circle, or an ellipse.

[0117] The thickness, length, and width of the plate 50 can be arbitrarily selected. In this embodiment, since the heat exchanger 10 is arranged to be inserted between multiple modules, the thickness of the plate 50 is approximately 1 mm to 2 mm. The length and width are determined based on the size of the object to be heat exchanged.

[0118] The plate 50 has an upper surface 50A, a lower surface 50B, a pair of first side surfaces 50CX and 50CY extending in the left-right direction, and a pair of second side surfaces 50DX and 50DY extending in the width direction. Preferably, at least a portion of the upper surface 50A and the lower surface 50B of the plate 50 is joined to the inner surfaces of the sheets 21 and 22 so that the plate 50 does not shift position relative to the container 20 in the left-right and width directions. In this embodiment, the entire upper surface 50A of the plate 50 is joined to the inner surface of the sheet 22, and the entire lower surface 50B of the plate 50 is joined to the inner surface of the sheet 21. Furthermore, when the entire upper surface 50A and the lower surface 50B are joined to the sheets 21 and 22, in other words, when there is substantially no gap between the upper surface 50A and the lower surface 50B and the sheets 21 and 22, the heat exchange medium that has passed through the outlet 32 ​​of the supply member 30 is suitably guided into the flow path 51 of the plate 50.

[0119] As shown in Figure 1, it is preferable that no substantial gap is formed between the pair of first sides 50CX, 50CY and the inner edge of the lateral seal portion 93 so that the position of the plate 50 does not shift relative to the container 20 in the width direction. The plate 50 is positioned such that the second side 50DX has a predetermined distance between it and the outlet 32 ​​of the supply member 30. The plate 50 is positioned such that the second side 50DY has a predetermined distance between it and the inlet 41 of the discharge member 40.

[0120] The flow path 51 shown in Figure 3 guides the heat exchange medium from the outlet 32 ​​of the supply member 30 to the inlet 41 of the discharge member 40 in the internal space S1. The number of flow paths 51 formed in the plate 50 can be arbitrarily selected. In this embodiment, the number of flow paths 51 formed in the plate 50 is 9. The number of flow paths 51 formed in the plate 50 may be 1 to 8, or 10 or more. Multiple flow paths 51 are grooves that extend along the left-right direction of the plate 50 and do not penetrate the plate 50. In this embodiment, 5 flow paths 51 (hereinafter referred to as "upper flow paths 51A") are formed on the upper surface 50A of the plate 50. 4 flow paths 51 (hereinafter referred to as "lower flow paths 51B") are formed on the lower surface 50B of the plate 50. The upper flow paths 51A are arranged at predetermined intervals along the width direction of the plate 50. The upper flow paths 51A reach from the second side surface 50DX to the second side surface 50DY. The lower channel 51B is arranged at predetermined intervals along the width direction of the plate 50. The lower channel 51B extends from the second side surface 50DX to the second side surface 50DY. The upper channel 51A and the lower channel 51B are located at different positions in the width direction of the plate 50. Since no locally thin areas are formed in the plate 50, the strength of the plate 50 is less likely to decrease. The upper channel 51A and the lower channel 51B are formed alternately in the width direction of the plate 50.

[0121] <1-7. Operation and Effects of Heat Exchangers> The heat exchange medium flows in the order of the outlet 32 ​​of the supply member 30 and the flow path 51 of the plate 50, absorbing heat from the object to be heat exchanged, and is discharged to the outside through the outlet 42 of the discharge member 40. In this embodiment, since the flow path 51 is formed in the plate 50, the flow path 51 is less likely to deform even if some external force is applied to the heat exchanger 10 when it is in use. Because the flow rate of the heat exchange medium in the flow path 51 is stable, the object to be heat exchanged can be suitably cooled or heated. The external force that acts on the heat exchanger 10 when it is in use is, for example, the external force that acts when the object to be heat exchanged expands and is pressed against the heat exchanger 10.

[0122] <2. Second Embodiment> The heat exchanger 200 of the second embodiment differs from the first embodiment in that it includes a diffusion member 210, but its other configurations are the same as those of the first embodiment. In the following, components identical to those of the first embodiment are denoted by the same reference numerals, and their descriptions are omitted. The description will focus on the parts that differ from the first embodiment.

[0123] Figure 5 is a plan view of the heat exchanger 200 of the second embodiment. The heat exchanger 200 includes a diffusion member 210 for diffusing the heat exchange medium. The material constituting the diffusion member 210 is, for example, a sponge or a nonwoven fabric. The shape of the diffusion member 210 can be arbitrarily selected. In this embodiment, the shape of the diffusion member 210 is a rectangular parallelepiped. The diffusion member 210 includes a first diffusion member 211 and a second diffusion member 212.

[0124] The first diffusion member 211 diffuses the heat exchange medium that has passed through the outlet 32 ​​of the supply member 30 toward the flow path 51 of the plate 50. The first diffusion member 211 is positioned in the left-right direction between the outlet 32 ​​of the supply member 30 and the second side surface 50DX of the plate 50. In the width direction, the first diffusion member 211 is positioned so that it does not shift position relative to the container 20 and so that there is no substantial gap between it and the inner edge of the lateral seal portion 93. The first diffusion member 211 is positioned to be in contact with the second side surface 50DX of the plate 50. The first diffusion member 211 may be joined to the plate 50. The first diffusion member 211 is positioned so that a predetermined gap is formed between it and the inner edge of the left seal portion 91.

[0125] The second diffusion member 212 diffuses the heat exchange medium that has passed through the flow path 51 of the plate 50 toward the discharge member 40. The second diffusion member 212 is positioned in the left-right direction between the inlet 41 of the discharge member 40 and the second side surface 50DY of the plate 50. In the width direction, the second diffusion member 212 is positioned so that it does not shift position relative to the container 20 and so that there is no substantial gap between it and the inner edge of the lateral seal portion 93. The second diffusion member 212 is positioned to be in contact with the second side surface 50DY of the plate 50. The second diffusion member 212 may be joined to the plate 50. The second diffusion member 212 is positioned so that a predetermined gap is formed between it and the inner edge of the right side seal portion 92.

[0126] The heat exchanger 200 provides the same effects as the heat exchanger 10 of the first embodiment. Furthermore, the heat exchanger 200 includes a first diffusion member 211, which allows the heat exchange medium that has passed through the outlet 32 ​​of the supply member 30 to be effectively diffused toward the flow path 51 of the plate 50. Moreover, the heat exchanger 200 includes a second diffusion member 212, which allows the heat exchange medium that has passed through the flow path 51 of the plate 50 to be effectively diffused toward the inlet 41 of the discharge member 40.

[0127] <3. Third Embodiment> The heat exchanger 300 of the third embodiment differs from that of the first embodiment in the configuration of the supply member 30 and the discharge member 40. Other configurations are basically the same as those of the first embodiment. In the following, components identical to those of the first embodiment are denoted by the same reference numerals, and their descriptions are omitted. The description will focus on the parts that differ from the first embodiment.

[0128] Figure 6 is a plan view of the heat exchanger 300 according to the third embodiment. The heat exchanger 300 includes a supply member 330 and a discharge member 340.

[0129] The supply member 330 is formed integrally with the plate 50. The shape of the supply member 330 can be arbitrarily selected. In this embodiment, the supply member 330 is a flat plate. In the width direction, the length of the supply member 330 is shorter than the length of the plate 50. The supply member 330 includes passages 331 through which the heat exchange medium passes. The number of passages 331 formed in the supply member 330 can be arbitrarily selected. In this embodiment, the supply member 330 has five passages 331. The number of passages 331 formed in the supply member 330 may be 1 to 4, or 6 or more. The passages 331 have an inlet 332 and an outlet 333 for the heat exchange medium. The inlet 332 is located outside the container 20 and to which the supply hose 110 (Figure 1) is connected. The outlet 333 is located in the internal space S1 and is, for example, the end of the upper flow path 51A on the second side 50DX side.

[0130] The discharge member 340 is formed integrally with the plate 50. The discharge member 340 has a main body 341, a pair of blades 342, and a passage 343 through which the heat exchange medium passes. The shape of the main body 341 can be arbitrarily selected. In this embodiment, the main body 341 is a flat plate. In the width direction, the length of the main body 341 is shorter than the length of the plate 50. The blades 342 are formed integrally with the main body 341 and protrude from the ends of the main body 341 in the width direction. The shape of the blades 342 can be arbitrarily selected. In this embodiment, the blades 342 are a flat plate. The passage 343 is formed in the main body 341. The number of passages 343 formed in the discharge member 340 can be arbitrarily selected. In this embodiment, the discharge member 340 has five passages 343. The number of passages 343 formed in the discharge member 340 may be 1 to 4, or 6 or more. The passages 343 have an inlet 344 and an outlet 345 for the heat exchange medium. The inlet 344 is located in the internal space S1 and faces, for example, the end of the upper flow path 51A on the second side 50DY side. The outlet 345 is located outside the container 20 and to which the discharge hose 120 (see Figure 1) is connected.

[0131] The heat exchanger 200 provides the same effects as the heat exchanger 10 of the first embodiment. Furthermore, because the supply member 330 and the discharge member 340 are integrally formed with the plate 50, the heat exchanger 200 can be easily manufactured. In addition, because the supply member 330 and the discharge member 340 are flat plates, the sheets 21 and 22 can be easily heat-sealed to the supply member 330 and the discharge member 340.

[0132] <4. Fourth Embodiment> The heat exchanger 400 of the fourth embodiment differs from that of the first embodiment in the configuration of the plates 50, the number of supply members 30, and the number of discharge members 40. Other configurations are basically the same as those of the first embodiment. In the following, components identical to those of the first embodiment are denoted by the same reference numerals, their descriptions are omitted, and the focus will be on the parts that differ from the first embodiment.

[0133] Figure 7 is a plan view of the heat exchanger 400 according to the fourth embodiment. The heat exchanger 400 comprises a plurality of plates 450 arranged in an internal space S1. The plurality of plates 450 are, for example, bar-shaped extending in the left-right direction, and form a flow path 460 for the heat exchange medium by partitioning the internal space S1. The number of plates 450 in the heat exchanger 400 can be arbitrarily selected as long as there are two or more. In this embodiment, the heat exchanger 400 comprises six plates 450. The heat exchanger 400 may comprise two to five, or seven or more, plates 450. The plurality of plates 450 are arranged in the internal space S1 at predetermined intervals along the width direction. Of the plurality of plates 450, the two plates 450 located on the outermost side in the width direction are positioned so that there is substantially no gap between them and the inner edge of the lateral seal portion 93.

[0134] As shown in Figure 8, the multiple plates 450 have an upper surface 451 and a lower surface 452. Preferably, at least a portion of the upper surface 451 and the lower surface 452 of the multiple plates 450 are joined to the inner surfaces of the sheets 21 and 22 so that they do not shift position relative to the container 20 in the left-right and width directions. In this embodiment, the entire upper surface 451 of plate 450 is joined to the inner surface of sheet 22, and the entire lower surface 452 of plate 50 is joined to the inner surface of sheet 21. When the entire upper surface 451 and the lower surface 452 are joined to sheets 21 and 22, in other words, when there is substantially no gap between the upper surface 451 and the lower surface 452 and sheets 21 and 22, the heat exchange medium that has passed through the outlet 32 ​​of the supply member 30 is suitably guided into the flow path 460.

[0135] The flow channels 460 are formed between adjacent plates 450 in the width direction among the multiple plates 450. Therefore, the number of flow channels 460 in the heat exchanger 400 depends on the number of plates 450 arranged in the internal space S1. In this embodiment, the heat exchanger 400 has five flow channels 460.

[0136] The supply member 30 is arranged, for example, so that its outlet 32 ​​faces the flow path 460. This allows the heat exchange medium that has passed through the outlet 32 ​​to be suitably guided into the flow path 460. The number of supply members 30 provided in the heat exchanger 400 can be arbitrarily selected. Preferably, the number of supply members 30 provided in the heat exchanger 400 matches the number of flow paths 460. In this embodiment, the heat exchanger 400 is provided with five supply members 30.

[0137] The discharge member 40 is arranged, for example, so that its inlet 41 faces the flow path 460. This allows the heat exchange medium that has passed through the flow path 460 to be suitably guided to the inlet 41. The number of discharge members 40 provided in the heat exchanger 400 can be arbitrarily selected. Preferably, the number of discharge members 40 provided in the heat exchanger 400 matches the number of flow paths 460. In this embodiment, the heat exchanger 400 is provided with five discharge members 40. The heat exchanger 400 provides the same effects as the heat exchanger 10 of the first embodiment.

[0138] <5. Fifth Embodiment> The heat exchanger 500 of the fifth embodiment differs from that of the fourth embodiment in the configuration of the container 20 and the inclusion of a spacer 530. Other configurations are basically the same as those of the fourth embodiment. In the following, components identical to those of the fourth embodiment are denoted by the same reference numerals, and their descriptions are omitted. The description will focus on the parts that differ from the fourth embodiment.

[0139] <5-1. Heat Exchanger Configuration> Figure 9 is a plan view of the heat exchanger 500 according to the fifth embodiment. Figure 10 is a cross-sectional view along the line D10-D10 in Figure 9. The heat exchanger 500 comprises a container 520 and a spacer 530.

[0140] The container 520 includes a first sheet 521 and a second sheet 522. The materials constituting the first sheet 521 and the second sheet 522 are the same as those exemplified in the first embodiment. The second sheet 522 is joined to the first sheet 521 such that a plurality of flow channels 540 through which a heat exchange medium flows are formed between it and the first sheet 521. The second sheet 522 has a plurality of bent portions 522A. The plurality of bent portions 522A are portions not joined to the first sheet 521, and the flow channels 540 are formed in the space enclosed by the inner surfaces of the bent portions 522A and the inner surface of the first sheet 521. The bent portions 522A are formed at predetermined intervals in the width direction. The bent portions 522A extend in the left-right direction. Therefore, the flow channels 540 also extend in the left-right direction.

[0141] The number of bent portions 522A formed on the second sheet 522 can be arbitrarily selected as long as there are two or more. In this embodiment, the second sheet 522 has five bent portions 522A. The number of bent portions 522A formed on the second sheet 522 may be two to four, or six or more. The shape of the bent portions 522A in cross-sectional view can be arbitrarily selected. As shown in Figure 9, in this embodiment, the shape of the bent portions 522A in cross-sectional view is rectangular. The shape of the bent portions 522A in cross-sectional view may be a square, a triangle, a polygon with five or more sides, or a semicircle.

[0142] Inward from the inner edge of the peripheral seal portion 90, the portion of the second sheet 522 other than the bent portion 522A is joined to the first sheet 521. The method of joining the first sheet 521 and the second sheet 522 can be arbitrarily selected. In this embodiment, the method of joining the first sheet 521 and the second sheet 522 is heat sealing. Hereinafter, the portion inward from the inner edge of the peripheral seal portion 90 where the first sheet 521 and the second sheet 522 are joined will be referred to as the inner seal portion 550.

[0143] The inner seal portion 550 has a first inner seal portion 551 and a second inner seal portion 552. The first inner seal portion 551 is located between the outermost bent portion 522A formed in the width direction and the inner edge of the lateral seal portion 93. The second inner seal portion 552 is located between adjacent bent portions 522A in the width direction. In this embodiment, the width of the first inner seal portion 551 and the width of the second inner seal portion 552 are approximately equal in the width direction. In this embodiment, the width of the bent portion 552A in the width direction is wider than the width of the first inner seal portion 551 and the width of the second inner seal portion 552.

[0144] The spacer 530 is positioned on the inner seal portion 550 so that the bent portion 522A does not deform even when an external force is applied to the second sheet 522. In other words, the spacer 530 has the function of maintaining the shape of the flow path 540 even when an external force is applied to the second sheet 522.

[0145] The spacer 530 is, for example, a bar-shaped spacer extending in the left-right direction. The material constituting the spacer 530 is, for example, the same as the material constituting the plate 50 as illustrated in the first embodiment. The spacer 530 has an upper surface 531 and a lower surface 532. In the height direction, the position of the upper surface 531 of the spacer 530 is flush with the surface of the second sheet 522, or higher than the surface of the second sheet 522. The lower surface 532 of the spacer 530 is joined to the surface of the second sheet 522. Therefore, the position of the spacer 530 is less likely to shift relative to the container 20. The number of spacers 530 provided in the heat exchanger 500 is determined based on the number of first internal seal portions 551 and second internal seal portions 552. It is preferable that spacers 530 be provided in all first internal seal portions 551 and second internal seal portions 552. In this embodiment, the heat exchanger 500 is provided with six spacers 530.

[0146] The supply member 30 is arranged, for example, so that its outlet 32 ​​faces the flow path 540. This allows the heat exchange medium that has passed through the outlet 32 ​​to be suitably guided into the flow path 540. The number of supply members 30 provided in the heat exchanger 400 can be arbitrarily selected. Preferably, the number of supply members 30 provided in the heat exchanger 400 matches the number of flow paths 540. In this embodiment, the heat exchanger 400 is provided with five supply members 30.

[0147] The discharge member 40 is arranged, for example, so that its inlet 41 faces the flow path 540. This allows the heat exchange medium that has passed through the flow path 540 to be suitably guided to the inlet 41. The number of discharge members 40 provided in the heat exchanger 400 can be arbitrarily selected. Preferably, the number of discharge members 40 provided in the heat exchanger 400 matches the number of flow paths 540. In this embodiment, the heat exchanger 400 is equipped with five discharge members 40.

[0148] <5-2. Method for Manufacturing Heat Exchangers> An example of a manufacturing method for the heat exchanger 500 will be described with reference to Figures 11 to 13. The manufacturing method for the heat exchanger 500 includes, for example, a container molding step, a spacer molding step, and a spacer mounting step.

[0149] In the container molding process, the second sheet 522 is bent so that a bent portion 522A is formed, and the first sheet 521 and the second sheet 522 are joined together so that a peripheral seal portion 90 and an inner seal portion 550 are formed.

[0150] As shown in Figure 11, in the spacer molding process, a flat spacer base material 560 and a connecting sheet 570 are joined together. The material constituting the connecting sheet 570 can be arbitrarily selected. In this embodiment, the material constituting the connecting sheet 570 is polyethylene terephthalate.

[0151] As shown in Figure 12, multiple spacers 530 of a predetermined size are manufactured by machining the spacer base material 560 which is joined to the connecting sheet 570. The multiple spacers 530 remain joined to the connecting sheet 570.

[0152] As shown in Figure 13, during the spacer installation process, the lower surfaces 532 of the multiple spacers 530, which are joined to the connecting sheet 570, are joined to the inner seal portion 550. After the lower surfaces 532 of the multiple spacers 530 and the inner seal portion 550 are joined, the connecting sheet 570 is peeled off from the multiple spacers 530. Alternatively, after the lower surfaces 532 of the multiple spacers 530 and the inner seal portion 550 are joined, the heat exchanger 500 may be used with the connecting sheet 570 still joined to the multiple spacers 530. In this case, the container 20 is protected because almost the entire upper surface of the second sheet 522 is covered by the connecting sheet 570.

[0153] According to the heat exchanger 500, because it is equipped with a spacer 530, the flow path 540 is less likely to deform even if some external force is applied to the heat exchanger 500 during use. Since the flow rate of the heat exchange medium in the flow path 540 is stable, the object to be heat exchanged can be cooled effectively.

[0154] <6. Sixth Embodiment> The heat exchanger 600 of the sixth embodiment differs from that of the fifth embodiment in the configuration of the supply member 30 and the discharge member 40, and in the absence of the spacer 530. Other configurations are basically the same as those of the fifth embodiment. In the following, components identical to those of the fifth embodiment are denoted by the same reference numerals, and their descriptions are omitted. The description will focus on the parts that differ from the fifth embodiment.

[0155] Figure 14 is a plan view of the heat exchanger 600 according to the sixth embodiment. Figure 15 is a cross-sectional view along the line D15-D15 in Figure 14. The heat exchanger 600 includes a supply member 630 and a discharge member 640. In this embodiment, the configuration of the supply member 630 and the discharge member 640 has been modified to improve the sealing performance of the left seal portion 91 and the right seal portion 92.

[0156] The supply member 630 is attached to the first sheet 521 and the second sheet 522 so as to communicate the flow path 540 with the outside. The supply member 630 is sandwiched between the first sheet 521 and the second sheet 522 at the left end of the peripheral seal portion 90. The supply member 630 has a main body portion 631 that is joined to the first sheet 521 and the second sheet 522, and a plurality of passages 632 formed in the main body portion 631 through which the heat exchange medium passes.

[0157] The shape of the main body 631 can be arbitrarily selected as long as it is a shape that is easy to join with the first sheet 521 and the second sheet 522. In this embodiment, the main body 631 is a flat plate. In this embodiment, the main body 631 and the first sheet 521 and the second sheet 522 are joined by heat sealing. In this embodiment, in order to improve the sealing performance between the main body 631 and the first sheet 521 and the second sheet 522, the four corners 631X of the main body 631 are rounded.

[0158] Multiple passages 632 penetrate the main body 631 in the left-right direction. Multiple passages 632 are formed in the width direction at predetermined intervals. The number of multiple passages 632 formed in the main body 631 can be arbitrarily selected as long as there are two or more. In this embodiment, the main body 631 has five passages 632. The number of passages 632 formed in the main body 631 may be two to four, or six or more. The passages 632 have an inlet 632A and an outlet 632B for the heat exchange medium. The inlet 632A is located outside the container 520 and to which the supply hose 110 (Figure 1) is connected. The outlet 632B is located in the internal space S1. The outlet 632B faces the flow path 540. Therefore, the heat exchange medium that has passed through the outlet 632B is suitably guided into the flow path 540.

[0159] The discharge member 640 has the same configuration as the supply member 630. The discharge member 640 is attached to the first sheet 521 and the second sheet 522 so as to communicate the flow path 540 with the outside. The discharge member 640 is sandwiched between the first sheet 521 and the second sheet 522 at the right end of the peripheral seal portion 90. The discharge member 640 has a main body portion 641 that is joined to the first sheet 521 and the second sheet 522, and a plurality of passages 642 formed in the main body portion 641 through which the heat exchange medium passes.

[0160] The shape of the main body 641 can be arbitrarily selected as long as it is a shape that is easy to join with the first sheet 521 and the second sheet 522. In this embodiment, the main body 641 is a flat plate. In this embodiment, the main body 641 and the first sheet 521 and the second sheet 522 are joined by heat sealing. In this embodiment, in order to improve the sealing performance between the main body 641 and the first sheet 521 and the second sheet 522, the four corners of the main body 641 are rounded, similar to the supply member 630.

[0161] Multiple passages 642 penetrate the main body 641 in the left-right direction. Multiple passages 642 are formed in the width direction at predetermined intervals. The number of multiple passages 642 formed in the main body 641 can be arbitrarily selected as long as there are two or more. In this embodiment, the main body 641 has five passages 642. The number of passages 642 formed in the main body 641 may be two to four, or six or more. The passages 642 have an inlet 642A and an outlet 642B for the heat exchange medium. The inlet 642A is located in the internal space S1. The inlet 642A faces the flow path 540. Therefore, the heat exchange medium that has passed through the flow path 540 is suitably guided to the inlet 642A. The outlet 642B is located outside the container 520, and a discharge hose 120 (see Figure 1) is connected to it.

[0162] In the heat exchanger 600, since the supply member 630 has multiple passages 632 formed in a single body portion 631, the sealing performance of the left sealing portion 91 is better than, for example, when multiple supply members are heat-sealed to the first sheet 521 and the second sheet 522. Also, in the heat exchanger 600, since the discharge member 640 has multiple passages 642 formed in a single body portion 641, the sealing performance of the right sealing portion 92 is better than, for example, when multiple discharge members are heat-sealed to the first sheet 521 and the second sheet 522.

[0163] <7. Variation> The embodiments described above are illustrative of possible forms of the heat exchanger according to the present invention and are not intended to limit its form. The heat exchanger according to the present invention may take forms different from those illustrated in each embodiment. For example, a form in which some of the components of each embodiment are replaced, modified, or omitted, or a form in which new components are added to each embodiment. Several examples of modifications of each embodiment are shown below. The gist of the following modifications is applicable not only to the first embodiment but also to the second to fifth embodiments.

[0164] <7-1> The configuration of plate 50 is not limited to those shown in each embodiment and can be changed as desired. For example, in the first to third embodiments, either the upper channel 51A or the lower channel 51B of plate 50 may be omitted.

[0165] <7-2> In the third embodiment, the configurations of the supply member 330 and the discharge member 340 can be arbitrarily changed. For example, the supply member 330 may have one inlet 332 and a passage 331 configured to branch off from the inlet 332. In this modification, the configuration can be simplified because there is only one supply hose 110 connected to the supply member 330. Alternatively, for example, the discharge member 340 may have one outlet 345 and a passage 343 configured to branch off from the outlet 345. In this modification, the configuration can be simplified because there is only one discharge hose 120 connected to the discharge member 340.

[0166] <7-3> In the sixth embodiment, the configuration of the supply member 630 can be arbitrarily changed.

[0167] As shown in Figure 16, for example, the main body portion 631 of the supply member 630 may have a tapered portion 631Y formed at its widthwise end, which tapers towards the outside in the widthwise direction. The formation of the tapered portion 631Y on the main body portion 631 improves the sealing performance between the main body portion 631 and the first sheet 521 and the second sheet 522.

[0168] As shown in Figure 17, for example, the main body 631 of the supply member 630 may have a wing portion 631Z that is connected to a tapered portion 631Y and extends along the width direction. The wing portion 631Z is, for example, a flat plate. According to the modified example shown in Figure 17, the sealing performance between the main body 631 and the first sheet 521 and the second sheet 522 is improved. The modified examples shown in Figures 16 and 17 can also be similarly applied to the discharge member 640, as well as to the supply member 330 and discharge member 340 of the third embodiment.

[0169] As shown in Figure 18, for example, the supply member 630 may have one inlet 632A and multiple passages 632 configured to branch from the one inlet 632A. In this modification, the configuration can be simplified because there is only one supply hose 110 connected to the supply member 630. Similarly to the supply member 630, for example, the discharge member 640 may have one outlet 642B and multiple passages 642 configured to branch from the one outlet 642B. In this modification, the configuration can be simplified because there is only one discharge hose 120 connected to the discharge member 640.

[0170] <7-4> In the sixth embodiment, the configuration of the supply hose 110 can be arbitrarily changed. As shown in Figure 19, the supply hose 110 may be configured to have one base 111 and an extension 112 connected to the base 111 and connected to a plurality of inlets 632A of the supply member 630. The heat exchange medium that has passed through the base 111 is supplied to the plurality of inlets 632A via the extension 112. This modification simplifies the configuration compared to a configuration in which the supply hose 110 is connected to each of the plurality of inlets 632A. This modification is also applicable to the discharge hose 120. That is, the discharge hose 120 may be configured to have one base and an extension connected to the base and connected to a plurality of outlets 642B of the discharge member 640. The modification shown in Figure 19 is also applicable to the third embodiment.

[0171] <7-5> In the sixth embodiment, the heat exchanger 600 had five flow paths 540, but the heat exchanger 600 only needs to have at least one flow path 540. For example, if the heat exchanger 600 has one flow path 540, the first sheet 521 and the second sheet 522 are joined only by the peripheral seal portion 90. In other words, if the heat exchanger 600 has one flow path 540, the bent portion 522A is omitted. Also, in the sixth embodiment, the configuration for forming the flow path of the heat exchange medium in the internal space S1 can be any configuration from the first to fourth embodiments. Furthermore, in the sixth embodiment, similar to the fifth embodiment, a spacer 530 may be placed on the internal seal portion 550 of the heat exchanger 600.

[0172] <7-6> Although the container 20 is constructed by heat-sealing sheet 21 and sheet 22, the container 20 may also be constructed by folding a single sheet and heat-sealing its edges. [Explanation of symbols]

[0173] 10, 200, 300, 400, 500, 600: Heat exchanger 30, 330, 630: Supply components 40, 340, 640: Discharge components 50, 450: Plate 51, 460, 540: Flow path 211: First Diffuser 212: Second Diffusion Member 521: First sheet 522: Second seat 530: Spacer 632, 642: Passageway

Claims

1. A container that is sealed so as to form an internal space, A supply member is attached to the container so as to connect the internal space with the outside, and through which a heat exchange medium flowing toward the internal space passes; A discharge member is attached to the container so as to connect the internal space with the outside, and through which the heat exchange medium flowing from the internal space to the outside passes; The system comprises a plate disposed in the internal space and having a flow path for the heat exchange medium in the internal space, The aforementioned flow path is a groove formed by a defect in the thickness direction of a portion of the plate. heat exchanger.

2. At least a portion of the surface of the plate is joined to the inner surface of the container. The heat exchanger according to claim 1.

3. The internal space further comprises a first diffusion member disposed between the supply member and the plate, which diffuses the heat exchange medium that has passed through the supply member toward the flow path. A heat exchanger according to claim 1 or 2.

4. The internal space further comprises a second diffusion member positioned between the discharge member and the plate, which diffuses the heat exchange medium that has passed through the flow path toward the discharge member. A heat exchanger according to any one of claims 1 to 3.

5. At least one of the supply member and the discharge member is formed integrally with the plate. A heat exchanger according to any one of claims 1 to 4.

6. The first sheet and, A second sheet is joined to the first sheet such that at least one channel through which a heat exchange medium flows is formed between the first sheet and the second sheet, A supply member is attached to the first and second sheets so as to connect the flow path with the outside, and through which the heat exchange medium flowing toward the flow path passes, The system includes an attachment to the first and second sheets so as to connect the flow path to the outside, and a discharge member through which the heat exchange medium flowing from the flow path toward the outside passes, The supply member includes a main body that is joined to the first sheet and the second sheet, and a plurality of passages formed in the main body through which the heat exchange medium passes. The entrances to the multiple passages are located between the first sheet and the second sheet in a side view. heat exchanger.

7. The first sheet and, A second sheet is joined to the first sheet such that at least one channel through which a heat exchange medium flows is formed between the first sheet and the second sheet, A supply member is attached to the first and second sheets so as to connect the flow path with the outside, and through which the heat exchange medium flowing toward the flow path passes, The system includes an attachment to the first and second sheets so as to connect the flow path to the outside, and a discharge member through which the heat exchange medium flowing from the flow path toward the outside passes, The discharge member includes a main body portion joined to the first sheet and the second sheet, and a plurality of passages formed in the main body portion through which the heat exchange medium passes. The exits of the multiple passages are located between the first sheet and the second sheet in a side view. heat exchanger.

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