JP2006239198A - Heat insulating coffee vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the weight of a vessel, the capacity for a liquid, the production cost of the vessel and the running cost of articles of consumption such as a thermal storage body or the like of a heat insulating coffee vessel. <P>SOLUTION: The heat insulating coffee vessel includes a cuboid-shaped inner vessel 2 equipped with a discharge pipe 4, a cuboid-shaped outer case 1 which has an extraction valve 5 to communicate with the discharge pipe 4 and covers the inner vessel 2, and a vacuum heat insulator 3 which is disposed between the inner vessel 2 and the outer case 1 and has an overall heat transfer coefficient of 1.5 W/m<SP>2</SP>K or less, wherein the vacuum heat insulator 3 is constituted to be plastered on a side surface and a bottom surface of the inner vessel 2 by an adhesive in the manner that a fin type peripheral section 3a of the vacuum heat insulator 3 is folded outside of the inner vessel 2, the side surface and the bottom surface of the inner vessel 2 are made to be heat insulating sections for the liquid coffee, and the top panel of the inner vessel 2 is made to be a heat radiating section for the liquid coffee. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insulated coffee container in which a vacuum container is provided with a liquid container used for a coffee server tank.

  Conventionally, this type of liquid container has a stainless steel vacuum double bottle as an inner container or a hollow enamel made of a drip machine to prevent deterioration of taste due to heater heating and to maintain a temperature above a certain level for a long time. A single bottle is used as an inner container (for example, see Patent Document 1).

  When the stainless steel vacuum double bottle is used as the inner container, the inner container has a configuration in which an inwardly curved portion higher than the height of the tip tube projecting from the bottom surface is formed on the bottom plate of the inner container. Since it is insulated by the heavy bottle, it is maintained at a predetermined temperature for a predetermined time.

  When the enamel single bottle is used as the inner container, heat insulation material such as foaming urethane is filled between the inner container and the outer case, and a space is provided between the bottom surface of the bottom plate of the inner container and the outer case. The heat storage body is inserted and inserted freely from the opening in the left and right direction provided in the space, and the heat storage body is in contact with the bottom surface of the inner container, and the heat retention effect is sustained by the action of the heat storage body.

  In recent years, vacuum heat insulating materials have been applied as means for keeping cool in refrigerators. Conventionally, this type of refrigerator includes a urethane foam and a vacuum heat insulating material between an outer box and an inner box (for example, Patent Documents). 2).

  Vacuum insulation is placed on both sides, top, back, bottom, and front, and the vacuum insulation coverage exceeds 50% and less than 80% of the surface area of the outer box. And high insulation performance is secured.

  Furthermore, the vacuum heat insulating material is applied as a means for keeping the temperature in the electric water heater. Conventionally, this kind of electric water heater has a bottomed cylindrical container for storing the liquid, and heating for heating and keeping the temperature of the liquid in the container. Means, a temperature sensing element such as a thermistor, a control circuit for controlling the temperature of the liquid in the container by an electrical signal from the temperature sensing element, a lid covering the upper opening in the container, and a cylindrical shape on the outer periphery of the container And a body located on the outer periphery of the vacuum heat insulating material (for example, see Patent Document 3).

An upper sealing member formed integrally with a part of the spout for holding the container is provided on the entire circumference or part of the vacuum insulating material so as to contact the outside of the vacuum insulating material. It is sealed by a stop member, which greatly reduces the amount of electric power during heat retention, is highly economical, has good assembly work, and is easy to use.
Japanese Patent No. 3046725 Japanese Patent No. 3493909 Japanese Patent No. 3513006

  However, in the conventional configuration, since the stainless steel vacuum double bottle is used as the inner container, the weight becomes heavy and quick handling becomes difficult, and the height of the tip tube protruding from the lower surface of the bottom plate of the inner container is higher. Since the inwardly curved portion is formed, there is a disadvantage that the capacity is small and the number of times of coffee drip increases.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems, and to provide an insulated coffee container that is lightweight, can be handled quickly, has a large capacity, and can reduce the number of times that coffee is dripped. .

  Conventionally, enameled single bottles are used as the inner container, and insulation material such as foamed urethane is filled between the inner container and the outer case. Since it takes time and requires a heat storage body, it takes time to heat and put in and out of the heat storage body, and the heat storage body is a consumable part, so that there is a disadvantage that it requires a running cost.

  Another object of the present invention is that there is no need for capital investment for the arrangement of the heat insulating material, no time is required for filling, no time is required for maintaining heat insulation, and no cost for running consumables. Is to provide a container.

  Furthermore, like the conventional refrigerator, the vacuum heat insulating material is arranged on both sides, top surface, back surface, bottom surface, and front surface, and the coverage of the vacuum heat insulating material is more than 50% and 80% or less with respect to the surface area of the outer box. According to the specifications, when applied to a liquid container used for a coffee server tank, in the specification of a refrigerator that is a low temperature heat insulation box, the heat insulation of the container at a high temperature is greatly changed, and the temperature range (78 to 82 ° C. at which the taste of coffee is not impaired. ) Is actually not easy to keep.

  Another object of the present invention is to provide an optimum application specification of a vacuum heat insulating material disposed in a heat insulating coffee container that can maintain a temperature range in which the coffee taste is not impaired.

  In addition, like a conventional electric water heater, a bottomed cylindrical container that contains liquid, a heating means that heats and keeps the liquid in the container, a lid that covers the upper opening in the container, and a cylinder on the outer periphery of the container When used in a liquid container used in a coffee server tank, a temperature-sensitive element or control circuit is required to control the temperature of the liquid due to the specifications composed of the vacuum heat insulating material positioned in the shape and the body located on the outer periphery of the vacuum heat insulating material. Further, since the vacuum heat insulating material is sealed by the upper sealing member, there is a disadvantage that the production cost is significantly increased, such as the need for investment in the mold for the container.

  In addition, if the temperature of the coffee is controlled by a temperature sensing element or control circuit, the number of parts is high, the cost is high, the weight is heavy and it is difficult to handle quickly, the capacity is small, and the response of the control circuit to the temperature is slow. There is a drawback that it is difficult to maintain the temperature in a temperature range (78 to 82 ° C.) where the taste of the product is not impaired.

  Another object of the present invention is to provide a heat-insulated coffee container that does not require mold investment, has a low number of parts, is low in cost, and can be controlled in a temperature range that does not impair the coffee taste.

  In order to achieve the above object, the insulated coffee container of the present invention is provided with a vacuum heat insulating material between an inner container provided with a discharge pipe and an outer case that includes an extraction valve communicating with the discharge pipe and covers the inner container. It is arranged with the optimum application specifications.

  As a result, the insulated coffee container is light in weight, has a large capacity, does not require capital investment for the arrangement of the heat insulating material, and does not require a heat storage body.

  Moreover, it becomes the heat insulation coffee container which can be heat-retained at predetermined temperature and predetermined time, without impairing the taste of coffee.

  Since the heat-insulated coffee container of the present invention is insulated by a vacuum heat insulating material, it is possible to provide a liquid container that is used for a coffee server tank that is lightweight and has a large capacity.

  Further, the insulated coffee container of the present invention does not require capital investment for disposing the heat insulating material, and does not require much time for filling, so that the production cost can be further reduced.

  Moreover, since the heat insulation coffee container of this invention does not require a heat storage body, the heat insulation coffee container which does not require the running cost of consumables can be provided.

  Furthermore, the heat insulation coffee container of this invention can perform the optimal application specification and temperature control of the vacuum heat insulating material which does not impair the taste of coffee.

The heat-insulated coffee container according to claim 1 of the present invention includes an inner container provided with a discharge pipe, an outer case that includes an extraction valve that communicates with the discharge pipe, covers the inner container, the inner container, and the outer container. And a vacuum heat insulating material having a thermal conductivity of 1.5 W / m ² K or less disposed between the case and the vacuum heat insulating material, the top surface, the side surface, and the bottom surface of the inner container. Except for the inner surface except the top, side and bottom surfaces of the inner container, the fin-like outer peripheral portion of the vacuum heat insulating material is attached to the outside of the inner container with an adhesive. Of the top, side and bottom surfaces of the inner container, the surface where the vacuum insulation material is pasted is the place to insulate the liquid coffee, and the vacuum insulation material is pasted between the top, side and bottom surfaces of the inner container. Dissipate the liquid coffee on the unattached surface Since the point, the coffee in the container remains is not compromised taste, the predetermined time can be maintained at a predetermined temperature.

  The invention of a heat-insulated coffee container according to claim 2 is the invention according to claim 1, wherein the vacuum heat insulating material is attached to the side surface and the bottom surface of the inner container, and the vacuum heat insulating material is attached to the top surface of the inner container. The side and bottom surfaces of the inner container are used as locations for heat insulation of the liquid coffee, and the top surface of the inner container is used as a location for heat dissipation of the liquid coffee. Can be maintained at a predetermined temperature for a predetermined time without losing the taste.

The invention of the insulated coffee container according to claim 3 includes: an inner container provided with a discharge pipe; an outer case that includes an extraction valve that communicates with the discharge pipe; and that covers the inner container; and the inner container and the outer case A vacuum heat insulating material having a heat transmissivity of 1.5 W / m ² K or less disposed between the inner container and the outer case so that any one of a top surface, a side surface and a bottom surface of the inner container can be heated. And the PTC heater disposed between the at least one of the top, side and bottom surfaces of the inner container excluding any one of the top, side and bottom surfaces of the inner container. The fin-shaped outer peripheral portion of the vacuum heat insulating material is bent toward the outside of the inner container, and is attached by an adhesive, and the top, side and bottom surfaces of the inner container The surface on which the vacuum insulation material is attached is the liquid coffee Of the top surface, side surface and bottom surface of the inner container where the surface where the PTC heater is pasted is the location where the liquid coffee is heated, and the vacuum heat insulating material is pasted among the top surface, side surface and bottom surface of the inner container Since the surface that has not been used is the location where the heat of the liquid coffee is dissipated, the coffee in the container can be maintained at a predetermined temperature for a predetermined time without losing the taste.

  The invention of a heat insulating coffee container according to claim 4 is the invention according to claim 3, wherein the vacuum heat insulating material is attached to a side surface of the inner container, and the vacuum heat insulating material is attached to the top surface of the inner container. The PTC heater is affixed to the bottom surface of the inner container without being affixed, and the side surface of the inner container is a place to insulate liquid coffee, and the bottom surface of the inner container is a place to heat the liquid coffee Since the top surface of the inner container is a place where the heat of the liquid coffee is dissipated, the coffee in the container can be maintained at a predetermined temperature for a predetermined time without sacrificing the taste.

  The invention of the heat-insulated coffee container according to claim 5 includes a plurality of the vacuum heat-insulating materials according to any one of claims 1 to 4 between the jacket materials facing the heat-welded layers. The core members are sealed under reduced pressure at a predetermined distance from each other, and the portions where the opposed heat-welding layers are in close contact with each other are heat-welded to the core material so as to follow the respective core material shapes. The vacuum heat insulating material is folded at a portion where the facing outer covering materials between the adjacent core material and the core material are welded to each other, and the top and side surfaces of the inner container It is characterized in that it covers multiple surfaces of the bottom and the bottom together, making it easy to fold and paste the vacuum insulation material, and to transfer heat from the corners and edges of each surface By reducing it, it is possible to insulate the entire inner container. That.

  The invention of the heat-insulated coffee container according to claim 6 is a core material part in which the vacuum heat insulating material according to any one of claims 1 to 4 has a core material between the jacket materials. In the folded state, the inner container covers a plurality of the top, side and bottom surfaces together, and the core material portion of the vacuum heat insulating material is folded. The vacuum heat insulating material can be easily attached, and the entire inner container can be insulated by reducing heat exchange from the corners and ends of each surface.

  Hereinafter, an embodiment of an insulated coffee container according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a heat-insulated coffee container according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view showing a state before the outer peripheral portion of the vacuum heat insulating material used in the heat-insulated coffee container of the same embodiment is bent, and FIG. It is sectional drawing which shows the state after the outer peripheral part bending of the vacuum heat insulating material used for the heat insulation coffee container of embodiment.

As shown in the figure, the insulated coffee container of the present embodiment includes a rectangular parallelepiped inner container 2 provided with a discharge pipe 4, and an extraction valve 5 communicating with the discharge pipe 4. A case 1 and (5) vacuum heat insulating materials 3 having a thermal conductivity of 1.5 W / m ² K or less disposed between the inner container 2 and the outer case 1 are provided.

  The vacuum heat insulating material 3 includes at least one of the top surface, the side surface, and the bottom surface of the inner container 2 excluding any one of the top surface, the side surface, and the bottom surface of the inner container 2 (the top surface in the present embodiment). In the form, it is affixed to the side surface and the bottom surface) with an adhesive body in a state where the fin-shaped outer peripheral portion 3a of the vacuum heat insulating material 3 is bent toward the outside of the inner container 2.

  With the above configuration, the coffee server tank is lightweight and can be handled quickly, has a large capacity, and can reduce the number of times to drip coffee.

  About the heat insulation coffee container comprised as mentioned above, first, the vacuum heat insulating material 3 made into the core material 3b of the same area is affixed on the side surface and bottom face of the inner container 2 with an adhesive, and the extraction valve is attached to the discharge pipe 4 of the inner container 2 5 can be communicated and inserted into the outer case 1 to provide a highly heat-insulating container.

  Here, in the present embodiment, the portion where the liquid coffee radiates heat is used as the top surface without attaching the vacuum heat insulating material 3, but the heat is radiated depending on the form of the inner container 2, the amount of coffee drip per time, and the like. It does not matter if the location is changed to one side or bottom surface of the side surface.

  The material of the outer case 1 is not particularly limited and is not particularly limited, but it is preferable that the material of the outer case 1 is made of metal or plastic in view of high quality as a coffee server tank.

  Further, in the present embodiment, the shape of the outer case 1 is the same as that of the inner container 2, but is not particularly limited, and it is desirable to conform to the form of the coffee server.

  However, it is desirable that the material of the inner container 2 is particularly in consideration of heat insulation properties. However, the material is not particularly limited, and the coffee server tank is preferably made of plastic in consideration of the quality of coffee taste. .

  Moreover, although the shape of the inner container 2 is a rectangular parallelepiped in the present embodiment, it is not particularly limited, and it is desirable to follow the shape of the outer case 1.

The vacuum heat insulating material 3 includes a core material 3b, a jacket material 3c that covers the core material 3b, and an adsorbent that adsorbs gas and moisture in the vacuum heat insulating material 3 as necessary. The material of the core material 3b, the thickness of the vacuum heat insulating material 3, and the degree of vacuum of the vacuum heat insulating material 3 must be adjusted so that the heat transmissivity is 1.5 W / m ² K or less.

Here, the heat flow rate in each core material 3b portion of the vacuum heat insulating material 3 is a heat flow sensor in a state where about 85 ° C. and 2 L of coffee are poured into the inner container 2 in an environment having an ambient temperature of 25 to 27 ° C. as measured by, but it is preferably not more than 1.5 W / m ² K, further heat transmission coefficient is desirably less 1.0 W / m ² K, by force in the following 0.5 W / m ² K It is desirable to be.

  The core material 3b is not particularly limited, such as fiber such as glass fiber, powder such as silica powder, and the like.

  Similarly, the covering material 3c is not particularly limited, but a metal foil such as aluminum or a film on which a metal or non-oxide is deposited is used as a gas barrier layer, and an unstretched polypropylene or straight chain is formed on the inner surface side of the gas barrier layer. A laminate film in which a film of low density polyethylene or the like is laminated by heat welding and a film of nylon or polyethylene terephthalate or the like is laminated as a protective layer on the outer surface of the gas barrier layer is desirable.

  The adsorbent is not particularly limited as long as it is a getter material such as a gas adsorbent or a moisture adsorbent and has an action of lowering or maintaining the vacuum degree of the vacuum heat insulating material 3.

  The pressure-sensitive adhesive is not particularly limited as long as it is a resin adhesive or tape excellent in water resistance and temperature resistance, but a pressure-sensitive adhesive double-sided tape is desirable. The vacuum heat insulating material 3 can be easily attached to the side surface and the bottom surface of the inner container 2 by attaching one side of the adhesive double-sided tape to the vacuum heat insulating material 3 and subsequently attaching the other side to the inner container 2.

  Further, as shown in FIG. 2, the fin-shaped outer peripheral portion 3a located on the outer peripheral side of the core 3b of the vacuum heat insulating material 3 may be attached to the inner container 2 or the outer case 1 without being bent. As shown in FIG. 3, with the outer peripheral portion 3a of the vacuum heat insulating material 3 folded, one side of the adhesive double-sided tape is attached to the vacuum heat insulating material 3, and the outer peripheral portion 3a is bent to the side surface and the bottom surface of the inner container 2. It is desirable to stick the other side.

  Here, if the outer peripheral portion 3a is bent and attached to the inner container 2, the end face of the outer cover material 3c is affected by vacuum deterioration due to the heat of the liquid, and the durability of the heat insulation performance is reduced. This is not desirable.

  Therefore, it is not necessary to invest a great amount of equipment for disposing the heat insulating material, and it does not take time for filling, and a heat insulating effect can be easily obtained.

  In the above embodiment, in order to find the optimum application specification of the vacuum heat insulating material 3, about 85 ° C. and 2 L of coffee are poured into the inner container 2 in an environment with an atmospheric temperature of 25 to 27 ° C. The results of measuring the temperature difference after time are shown in (Table 1).

ここで、図４のように真空断熱材３を内容器２の底面のみに貼り付けた仕様も同時に比較検討した。また、内容器２の熱容量の影響を除外するように、内容器２は予め約８５℃のコーヒーで共洗いをしておいた。

Here, the specification which stuck the vacuum heat insulating material 3 only to the bottom face of the inner container 2 like FIG. 4 was also compared and examined simultaneously. Moreover, the inner container 2 was previously washed with about 85 ° C. coffee so as to exclude the influence of the heat capacity of the inner container 2.

  The temperature of the coffee is about 85 ° C. When boiling water is poured, the temperature is too high, the bitterness and astringency of the coffee is emphasized, the color becomes dark and cloudy, and the acidity is emphasized when the temperature of the hot water is low. This is because of the unique properties of coffee that are simply colored and thin.

  Furthermore, in order not to impair the taste of the coffee, it is desirable to keep it at 78 to 82 ° C., which is a temperature range in which the tannin that is weak in coffee and caffeine that is weak in high temperature are not impaired. .

  As can be seen from (Table 1), by sticking the vacuum heat insulating material 3 to the side surface and the bottom surface of the inner container 2, it can be kept in a temperature zone where the taste of coffee is not impaired even after one hour. This is a place where the vacuum heat insulating material 3 is attached to the side surface and the bottom surface to insulate the liquid coffee, and the top surface of the inner container 2 is insulated from the heat radiating portion of the liquid coffee without attaching the vacuum heat insulating material 3. This is because the temperature can be controlled in a well-balanced manner.

  On the other hand, in the vacuum double bottle, the heat insulation performance was too high and the temperature did not drop, and the taste of the coffee was emphasized for bitterness and astringency.

  Moreover, when the vacuum heat insulating material 3 is affixed only to the bottom surface of the inner container 2, as shown in comparison with the specifications affixed to the side surface and the bottom surface, the effect of heat radiation from the side surface is strong, and coffee is still 1 hour later. It cannot be kept in a temperature range where the taste is not impaired. That is, it is well understood that the present embodiment in which the vacuum heat insulating material 3 is attached to the side surface of the rectangular parallelepiped inner container 2 is effective for heat insulation.

  Therefore, since a heat storage body is not required at all, it takes time to heat and put in and out the heat storage body, and since the heat storage body is a consumable item, it is possible to solve the problem of running cost.

As described above, the insulated coffee container of the present embodiment includes the rectangular parallelepiped inner case 2 provided with the discharge pipe 4 and the rectangular parallelepiped outer case that includes the extraction valve 5 communicating with the discharge pipe 4 and covers the inner container 2. 1 and a vacuum heat insulating material 3 having a heat transmissivity of 1.5 W / m ² K or less disposed between the inner container 2 and the outer case 1. A vacuum heat insulating material is provided on at least one of the top surface, the side surface, and the bottom surface (side surface and bottom surface in the present embodiment) of the other inner container 2 excluding any one of the surface, side surface, and bottom surface (the top surface in the present embodiment). The fin-shaped outer peripheral portion 3a is bent toward the outside of the inner container 2, and is attached to the adhesive body, and is vacuum insulated from the top, side and bottom surfaces of the inner container 2. The surface to which the material 3 is attached (in this embodiment, the side surface and the bottom surface) is liquid. Since the surface where the vacuum heat insulating material 3 is not affixed among the top surface, the side surface, and the bottom surface of the inner container 2 (the top surface in the present embodiment) is the location where the liquid coffee dissipates heat. The coffee inside can be maintained at a predetermined temperature for a predetermined time without sacrificing the taste, light and quick handling is possible, the capacity is large, and the number of times to drip the coffee can be reduced, An insulated coffee container in which the coffee taste is not impaired can be provided.

  In addition, if the vacuum heat insulating material 3 is affixed on the side surface and bottom surface of the inner container 2 and the vacuum heat insulating material 3 is not affixed on the top surface of the inner container 2 as in the present embodiment, the inside of the container is further increased. The coffee can be maintained at a predetermined temperature for a predetermined time without losing the taste.

(Embodiment 2)
FIG. 5 is a plan view showing a state before bending of the vacuum heat insulating material used in the heat-insulated coffee container according to Embodiment 2 of the present invention, and FIG. 6 is an assembly perspective view of the heat-insulated coffee container according to the same embodiment.

As shown in the figure, the insulated coffee container of the present embodiment includes a rectangular parallelepiped inner container 2 provided with a discharge pipe 4, and an extraction valve 5 communicating with the discharge pipe 4. A case 1 and a vacuum heat insulating material 3 having a thermal conductivity of 1.5 W / m ² K or less disposed between the inner container 2 and the outer case 1 are provided.

  The vacuum heat insulating material 3 includes at least one of the top, side, and bottom surfaces of the inner container 2 excluding any one of the top surface, the side surface, and the bottom surface of the inner container 2 (the top surface and the bottom surface in the present embodiment). In the embodiment, it is affixed to the side surface) with an adhesive in a state where the fin-shaped outer peripheral portion 3a of the vacuum heat insulating material 3 is bent toward the outside of the inner container 2.

  The vacuum heat insulating material 3 of the present embodiment is formed by sealing a plurality of (four in the present embodiment) core members 3b at a predetermined distance from each other between the outer cover materials 3c opposed to each other by heat sealing layers. The portions where the opposed heat-welding layers are in close contact with each other are heat-welded to the core material 3b so as to follow the shape of each core material 3b.

  Moreover, the vacuum heat insulating material 3 of this Embodiment is a part (the fold line shown by the dashed-two dotted line of FIG. 5) where the covering material 3c which opposes between the adjacent core materials 3b and the core materials 3b is welded. ), The plurality of surfaces of the top surface, the side surface and the bottom surface of the inner container 2 (four side surfaces in the present embodiment) are covered together.

  The vacuum heat insulating material 3 according to the first embodiment is affixed to each of the surfaces (side surface and bottom surface) to which the vacuum heat insulating material 3 is attached. One sheet covers four side surfaces.

  The present embodiment and the first embodiment are the same except for the shape of the vacuum heat insulating material 3.

The material of the core material, the thickness of the vacuum heat insulating material 3 and the degree of vacuum of the vacuum heat insulating material 3 are adjusted so that the heat permeability at each core material 3b of the vacuum heat insulating material 3 is 1.5 W / m ² K or less. Must.

Here, the heat flow rate in each core material 3b portion of the vacuum heat insulating material 3 is a heat flow sensor in a state where about 85 ° C. and 2 L of coffee are poured into the inner container 2 in an environment having an ambient temperature of 25 to 27 ° C. as measured by, but it is preferably not more than 1.5 W / m ² K, further heat transmission coefficient is desirably less 1.0 W / m ² K, by force in the following 0.5 W / m ² K It is desirable to be.

  The core material 3b is not particularly limited, such as fiber such as glass fiber, powder such as silica powder, and the like.

  Similarly, the covering material 3c is not particularly limited, but a metal foil such as aluminum or a film on which a metal or non-oxide is deposited is used as a gas barrier layer, and an unstretched polypropylene or straight chain is formed on the inner surface side of the gas barrier layer. A laminate film in which a film of low density polyethylene or the like is laminated by heat welding and a film of nylon or polyethylene terephthalate or the like is laminated as a protective layer on the outer surface of the gas barrier layer is desirable.

  The adsorbent is not particularly limited as long as it is a getter substance such as a gas adsorbent or a moisture adsorbent and has an action of lowering or maintaining the vacuum degree of the vacuum heat insulating material 3.

  In the present embodiment, as shown in FIG. 6, the vacuum heat insulating material 3 is attached to the outside of the inner container 2 by being folded along the folding line indicated by the two-dot chain line in FIG. 5, and the vacuum heat insulating material 3 is attached to the side surface. The attached inner container 2 is inserted into the outer case 1, but when the similar vacuum heat insulating material 3 is attached to the inner side of the outer case 1, it may be bent and attached along the folding line.

  Thereby, transfer of the heat from the corner | angular part and edge part of each surface can be decreased rather than the case where each side surface is each affixed with the vacuum heat insulating material 3 single-piece | unit.

  The heat-insulated coffee container of the present embodiment is formed by a plurality of (four in the present embodiment) core members 3b being vacuum-sealed at a predetermined interval between outer cover materials 3c facing each other. The vacuum heat insulating material 3 having a structure in which the portions where the heat-welding layers facing each other are in close contact with each other so as to conform to the shape of each core material 3b is adjacent to the core material 3b and the core material 3b. Any one of the top surface, the side surface and the bottom surface of the inner container 2 in a state where it is folded at the portion where the facing outer covering materials 3c are welded to each other (folding line indicated by a two-dot chain line in FIG. 5) A plurality of surfaces (four side surfaces in the present embodiment) are covered together, and in addition to the effects of the heat insulating coffee container of the first embodiment, the vacuum heat insulating material 3 can be easily folded and pasted. And less heat was transferred from the corners and edges of each side. , The inner container 2 as a whole it is possible to insulate.

  Therefore, the insulated coffee container of the present embodiment does not require any heat storage body so that the taste of the coffee is not impaired, so it takes time to heat and store the heat storage body, and the heat storage body is consumed. This can solve the problem of high running costs.

(Embodiment 3)
FIG. 7 is a plan view showing a state before folding of the vacuum heat insulating material used in the heat insulating coffee container according to Embodiment 3 of the present invention, and FIG. 8 is an assembled perspective view of the heat insulating coffee container according to the same embodiment.

As shown in the figure, the insulated coffee container of the present embodiment includes a rectangular parallelepiped inner container 2 provided with a discharge pipe 4, and an extraction valve 5 communicating with the discharge pipe 4. A case 1 and a vacuum heat insulating material 3 having a thermal conductivity of 1.5 W / m ² K or less disposed between the inner container 2 and the outer case 1 are provided.

  The vacuum heat insulating material 3 includes at least one of the top, side, and bottom surfaces of the inner container 2 excluding any one of the top surface, the side surface, and the bottom surface of the inner container 2 (the top surface and the bottom surface in the present embodiment). In the embodiment, it is affixed to the side surface) with an adhesive in a state where the fin-shaped outer peripheral portion 3a of the vacuum heat insulating material 3 is bent toward the outside of the inner container 2.

  Although the vacuum heat insulating material 3 of Embodiment 2 is bent at a portion where the core material 3b does not exist between the jacket materials 3c, the vacuum heat insulating material 3 of the present embodiment is a core material between the jacket materials 3c. 3b is bent at the core 3b portion (folding line indicated by a two-dot chain line in FIG. 7), and the vacuum heat insulating material 3 is folded in any of the top surface, the side surface, and the bottom surface of the inner container 2. These plural surfaces (side surfaces in the present embodiment) are covered together.

  The present embodiment and the second embodiment are the same except for the shape of the vacuum heat insulating material 3.

  In the present embodiment, as shown in FIG. 8, the vacuum heat insulating material 3 is attached to the outside of the inner container 2 by being folded along a folding line indicated by a two-dot chain line in FIG. 7, and the vacuum heat insulating material 3 is attached to the side surface. The attached inner container 2 is inserted into the outer case 1, but when the similar vacuum heat insulating material 3 is attached to the inner side of the outer case 1, it may be bent and attached along the folding line.

  Here, when the vacuum heat insulating material 3 is bent, a groove is preferably provided so as to be easily bent in advance. The shape of the groove is not particularly limited, but the depth of the groove is preferably 75% or less with respect to the thickness of the vacuum heat insulating material 3. If it is 75% or more, the vacuum heat insulating material 3 will be broken at the time of grooving.

The material of the core material 3b, the thickness of the vacuum heat insulating material 3, and the degree of vacuum of the vacuum heat insulating material 3 must be adjusted so that the heat permeability of the vacuum heat insulating material 3 is 1.5 W / m ² K or less.

Here, the heat flow rate in each core material 3b portion of the vacuum heat insulating material 3 is a heat flow sensor in a state where about 85 ° C. and 2 L of coffee are poured into the inner container 2 in an environment having an ambient temperature of 25 to 27 ° C. as measured by, but it is preferably not more than 1.5 W / m ² K, further heat transmission coefficient is desirably less 1.0 W / m ² K, by force in the following 0.5 W / m ² K It is desirable to be.

  The core material 3b is not particularly limited, such as fiber such as glass fiber, powder such as silica powder, and the like.

  Similarly, the covering material 3c is not particularly limited, but a metal foil such as aluminum or a film on which a metal or non-oxide is deposited is used as a gas barrier layer, and an unstretched polypropylene or straight chain is formed on the inner surface side of the gas barrier layer. A laminate film in which a film of low density polyethylene or the like is laminated by heat welding and a film of nylon or polyethylene terephthalate or the like is laminated as a protective layer on the outer surface of the gas barrier layer is desirable.

  The adsorbent is not particularly limited as long as it is a getter substance such as a gas adsorbent or a moisture adsorbent and has an action of lowering or maintaining the vacuum degree of the vacuum heat insulating material 3.

  Thereby, the transfer of heat from the corners and end portions of each surface can be reduced as compared with the case where each surface is bonded with the vacuum heat insulating material 3 alone.

  Therefore, the heat insulating coffee container of the present embodiment makes it easy to bend and attach the vacuum heat insulating material 3 and reduces heat transfer from the corners and ends of each surface, so that the entire inner container 2 is insulated. I can do it.

  As described above, the insulated coffee container of the present embodiment does not require any heat storage body so that the taste of coffee is not impaired, so it takes time to heat and store the heat storage body. Because it is a consumable item, it can solve the problem of high running costs.

(Embodiment 4)
FIG. 9 is a cross-sectional view of an insulated coffee container according to Embodiment 4 of the present invention.

As shown in FIG. 9, the insulated coffee container of the present embodiment has a rectangular parallelepiped shape that includes a rectangular parallelepiped inner container 2 provided with a discharge pipe 4 and an extraction valve 5 that communicates with the discharge pipe 4. The outer case 1, the vacuum heat insulating material 3 having a heat transmissivity of 1.5 W / m ² K or less, disposed between the side surface of the inner container 2 and the outer case 1, and the top and side surfaces of the inner container 2 and A PTC heater 6 is provided between the bottom surface of the inner container 2 and the outer case 1 so that any one of the bottom surfaces (the bottom surface in the present embodiment) can be heated.

  The vacuum heat insulating material 3 includes at least one of the top, side, and bottom surfaces of the inner container 2 excluding any one of the top surface, the side surface, and the bottom surface of the inner container 2 (the top surface and the bottom surface in the present embodiment). In the embodiment, it is affixed to the side surface) with an adhesive in a state where the fin-shaped outer peripheral portion 3a of the vacuum heat insulating material 3 is bent toward the outside of the inner container 2.

  In the present embodiment, a PTC heater 6 is disposed between the bottom surface of the inner container 2 and the outer case 1 of the heat-insulated coffee container of the second or third embodiment.

  As a result, the coffee server tank is lightweight and can be handled quickly, has a large capacity, and can reduce the number of times the coffee is dripped.

  With respect to the insulated coffee container configured as described above, first, the vacuum heat insulating material 3 having the same area as the core material is attached to the side surface of the inner container 2 with an adhesive, and the extraction valve 5 is communicated with the discharge pipe 4 of the inner container 2. The container can be made into a highly heat-insulating container by being inserted into the outer case 1.

  Further, a PTC heater 6 is attached to the bottom surface of the inner container 2 so that liquid coffee can be heated from the bottom surface. By setting the bottom surface of the inner container 2 as a heating location, the side surface as a heat insulation location, and the top surface as a heat dissipation location, the temperature of the coffee is maintained in a temperature range (78 to 82 ° C.) where the taste is not impaired.

  Thereby, the mold control is not required, the number of parts is small, the cost can be reduced, and the temperature can be controlled in a temperature range in which the coffee taste is not impaired.

  Here, in the present embodiment, the portion where the liquid coffee radiates heat is used as the top surface without attaching the vacuum heat insulating material 3, but the heat is radiated depending on the form of the inner container 2, the amount of coffee drip per time, and the like. It does not matter if the location is changed to one side or bottom surface of the side surface.

  Similarly, in the present embodiment, the PTC heater 6 is attached to the bottom surface of the inner container 2 and the location where the liquid coffee is heated is the bottom surface. However, depending on the form of the inner container 2, the amount of coffee drip per time, etc. The heating location may be changed to one side or top surface.

  As in the first embodiment, when the vacuum heat insulating material 3 is attached only to the bottom surface of the inner container 2, as can be seen from comparison with the specification attached to the side surface and the bottom surface, the influence of heat radiation from the side surface is strong, Even after 1 hour, it cannot be kept in a temperature range where the taste of the coffee is not impaired. That is, it is well known that the present embodiment in which the vacuum heat insulating material 3 is attached to the side surface of the rectangular parallelepiped inner container 2 is effective for heat insulation.

  Furthermore, by heating from the bottom surface with the PTC heater 6, delicate temperature control becomes possible, and the temperature of the coffee can be kept in a temperature range (78 to 82 ° C.) where the taste is not impaired.

  Here, it is desirable that the PTC heater 6 has a rated voltage of AC 100 V and a Curie temperature of 70 to 80 ° C. Since the actual surface temperature of the heater is higher than the Curie temperature, in order to keep the temperature of the coffee in a temperature range (78 to 82 ° C.) that does not impair the taste, the surface temperature of the heater does not exceed 85 ° C. It is necessary to select the Curie temperature.

  From the above, in the insulated coffee container of the present embodiment, the PTC heater 6 is attached to the bottom surface of the inner container 2, the bottom surface of the inner container 2 is used as a heating location, the side surface is used as a heat insulation location, and the top surface is used as a heat dissipation location. Thus, the temperature of the coffee can be kept in a temperature range where the taste is not impaired.

  As described above, the heat-insulated coffee container according to the present invention is insulated by the optimum application specification of the vacuum heat insulating material, so that it can be kept at a certain temperature range, the liquid taste is not impaired, it is lightweight, and the capacity It is possible to provide a large number of containers, regardless of whether it is for hot use or for ice use, such as containers for extracted beverages such as green tea, black tea, oolong tea, water, milk, fruit juice drinks, lactic acid drinks, etc. The present invention can also be applied to beverage containers, containers for alcoholic beverages such as sake, wine, and beer, and containers for cooked beverages such as soup and potage.

Sectional drawing of the heat insulation coffee container by Embodiment 1 of this invention Sectional drawing which shows the state before outer peripheral part bending of the vacuum heat insulating material used for the heat insulation coffee container of the embodiment Sectional drawing which shows the state after the outer peripheral part bending of the vacuum heat insulating material used for the heat insulation coffee container of the embodiment Sectional drawing of the heat insulation coffee container by the comparative example of the embodiment The top view which shows the state before bending of the vacuum heat insulating material used for the heat insulation coffee container by Embodiment 2 of this invention. Assembly perspective view of an insulated coffee container according to the embodiment The top view which shows the state before bending of the vacuum heat insulating material used for the heat insulation coffee container by Embodiment 3 of this invention. Assembly perspective view of an insulated coffee container according to the embodiment Sectional drawing of the heat insulation coffee container by Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer case 2 Inner container 3 Vacuum heat insulating material 3a Outer peripheral part 3b Core material 3c Outer material 4 Discharge pipe 5 Discharge valve 6 PTC heater

Claims (6)

An inner container provided with a discharge pipe, an outer case provided with an extraction valve communicating with the discharge pipe and covering the inner container, and a heat transmissivity of 1.5 W disposed between the inner container and the outer case / M ² K or less vacuum heat insulating material, and the vacuum heat insulating material is at least one surface of the top, side and bottom surfaces of the other inner container excluding any one of the top, side and bottom surfaces of the inner container. Further, a heat-insulated coffee container, wherein the fin-like outer peripheral portion of the vacuum heat insulating material is bent toward the outside of the inner container, and is adhered with an adhesive.   The heat insulating coffee container according to claim 1, wherein the vacuum heat insulating material is attached to a side surface and a bottom surface of the inner container, and the vacuum heat insulating material is not attached to a top surface of the inner container. An inner container provided with a discharge pipe, an outer case provided with an extraction valve communicating with the discharge pipe and covering the inner container, and a heat transmissivity of 1.5 W disposed between the inner container and the outer case / M ² K or less of a vacuum heat insulating material, and a PTC heater disposed between the inner container and the outer case so as to heat any one of the top, side and bottom surfaces of the inner container, The vacuum heat insulating material has a fin-shaped outer peripheral portion of the vacuum heat insulating material on at least one of the top surface, the side surface and the bottom surface of the other inner container excluding any one of the top surface, the side surface and the bottom surface of the inner container. A heat-insulated coffee container, wherein the heat-insulated coffee container is affixed with an adhesive while being bent toward the outside of the inner container.   The vacuum heat insulating material is attached to a side surface of the inner container, the vacuum heat insulating material is not attached to the top surface of the inner container, and the PTC heater is attached to the bottom surface of the inner container. Item 4. The insulated coffee container according to Item 3.   The vacuum heat insulating material is formed by sealing a plurality of core materials at a predetermined distance from each other between outer covering materials facing each other, and the portions where the facing heat welding layers are in close contact with each other. The core material is heat-sealed to the core material, and the vacuum heat insulating materials are facing each other between the adjacent core material and the core material. Any one of the top surface, the side surface, and the bottom surface of the inner container is covered together in a state of being bent at the welded portion. The insulated coffee container according to one item.   The vacuum heat insulating material covers a plurality of surfaces of the top surface, the side surface, and the bottom surface of the inner container together in a state of being bent at the core material portion where the core material exists between the jacket materials. The insulated coffee container as described in any one of Claims 1-4 characterized by these.

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