JP6690755B1 - Insulation container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-retaining container that suppresses a decrease in temperature of heat-retaining contents and allows a user to arbitrarily set an optimum temperature for heat-retaining a heat-retaining target. SOLUTION: A heat retaining container 1 is provided with a heat storage agent for retaining heat of a heat retaining object, a vacuum heat insulating layer 13 provided between an outer surface 11 and an inner surface 12, and a housing 10 having a concave cross section. 10 is provided inside the inner surface 12 of the container 10, has a concave cross section, and is formed between the container body 20 in which the object to be kept warm is accommodated and the housing 10 and the container body 20, and the heat storage agent is accommodated therein. The heat storage agent accommodating portion 30 and the container opening / closing portion 60 that opens or closes the opening 23 of the container body 20 and the opening 31 of the heat storage agent accommodating portion 30 are stored in the heat storage agent accommodating portion 30. The mass density of the heat storage agent is larger on the bottom (21) side of the container body 20 than on the side of the opening of the container body 20. [Selection diagram] Figure 2

Description

  The present invention relates to a heat retaining container provided with a heat storage agent.

  Conventionally, a thermal insulation container filled with a heat storage agent is proposed in a gap provided between a vacuum heat insulating layer and a storage container for the purpose of holding a thermal insulation target such as a beverage or food at a desired temperature for a long time. (For example, see Patent Document 1).

Japanese Utility Model Publication 62-21253

  In the heat insulating container described above, the heat of the heat insulating object filled inside is gradually radiated from the upper part of the container, so that the temperature of the heat insulating object is likely to decrease. Also, when the user opens the lid, the outside air enters the inside, so that the temperature of the object to be kept warmed more easily.

  Further, in the heat retaining container using the heat storage agent, the temperature at which the heat retention target is kept warm is adjusted by the melting temperature of the heat storage agent. In the above-mentioned heat-retaining container, one kind of heat storage agent suitable for a specific heat-retaining object is filled, so the user can keep the heat-retaining object only at the temperature determined by the specification of the heat-retaining container. It was However, since the temperature suitable for heat retention varies depending on the object to be kept warm, it may not be possible to keep the temperature at an optimum temperature depending on the object to be kept warm.

  An object of the present invention is to provide a heat insulating container that suppresses a decrease in the temperature of the heat insulating contents and allows a user to arbitrarily set an optimum temperature for keeping the heat insulating object.

  The present invention solves the problems by the following solving means. It should be noted that, for ease of understanding, reference numerals corresponding to the embodiments of the present invention will be given and described, but the present invention is not limited thereto. Further, the configurations described with reference numerals may be appropriately improved, or at least a part of them may be replaced with other components.

  1st invention WHEREIN: The vacuum heat insulating layer (13) is provided between the heat storage agent (50) which heat-retains an object to be heat-retained, and the outer surface (11) and the inner surface (12), and a housing with a concave cross section. A body (10), a container body (20) provided inside the inner surface of the housing, having a concave cross section, and accommodating an object to be kept warm; and the housing and the container body. A heat storage agent storage part (30) formed between them, in which the heat storage agent is stored, and a container opening / closing part for opening or closing the opening part (23) of the container body and the opening part (31) of the heat storage agent storage part. (60), and the heat storage agent stored in the heat storage agent storage section has a mass density in which the bottom part (21) side of the container body is larger than the opening side of the container body. .

  2nd invention is a heat retention container which concerns on 1st invention, Comprising: The said heat storage agent storage part WHEREIN: The container main body of the said heat retention object accommodated rather than the interface of the liquid level of the heat retention target object and the air. The heat storage agent having a mass density smaller than that of the bottom portion side of the container body is accommodated on the opening side.

  3rd invention is a heat retention container which concerns on 2nd invention, Comprising: The said thermal storage agent storage part is not storing the said thermal storage agent in the said opening part side of the said container main body side rather than the said interface.

  4th invention is the heat retention container which concerns on any one of 1st-3rd invention, Comprising: The heat storage agent holding body (50) which hold | maintains a predetermined amount of the said heat storage agent inside, The said heat storage agent accommodation The unit removably accommodates one or more of the heat storage agent holders.

  5th invention is the heat insulation container which concerns on any one of 1st-4th invention, Comprising: The support member which supports the said container main body between the inside of the said housing, and the outer side of the said container main body ( 15, 24).

  A sixth aspect of the present invention is the heat insulating container according to any one of the first to fifth aspects of the present invention, wherein a heat storage agent is housed between the bottom of the container body and the bottom of the casing.

  7th invention is the heat retention container which concerns on any one of 1st to 6th invention, Comprising: The said heat storage agent storage part is stepped from the said bottom part side of the said container main body toward the said opening part side. Therefore, the storage space for the heat storage agent is reduced.

  An eighth invention is the heat retaining container according to any one of the first to sixth inventions, wherein the heat storage agent storage portion is continuous from the bottom side of the container body toward the opening side. Therefore, the storage space for the heat storage agent is reduced.

  9th invention is the heat retention container which concerns on any one of 1st-8th invention, Comprising: The said container opening-and-closing part is the state which closed the said opening part of the said heat storage agent accommodating part, of the said container main body. A lid (65) for opening only the opening is provided.

  A tenth aspect of the present invention is a heat retaining container according to any one of the first to ninth aspects, wherein an inner surface of the container body has an upper limit of a liquid level of a heat retaining target housed in the container body. A water level line (L) indicating a position is provided, and in the heat storage agent storage part, a mass smaller than the water level line on the side of the opening of the container body and on the side of the bottom of the container body. The heat storage agent having a density is stored.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing the fall of the temperature of the heat retention content, the user can provide the heat retention container which can set the optimal temperature for the heat retention of the heat retention object arbitrarily.

It is a perspective view showing the whole warming container 1 composition of a 1st embodiment. It is sectional drawing of the heat retention container 1. It is an exploded sectional view of heat insulation container 1. It is the aa sectional view taken on the line of FIG. (A)-(D) is a perspective view which shows the form of the heat storage agent holder 50A-50D. It is a figure explaining the mounting | wearing method of the heat storage agent holding body 50 to the heat retention container 1. FIG. It is a figure explaining the mounting | wearing method of the heat storage agent holding body 50 to the heat retention container 1. FIG. It is sectional drawing of 1 A of heat insulation containers of 2nd Embodiment. (A)-(D) is a perspective view which shows the form of the heat storage agent holder 150A-150D. It is sectional drawing of the heat retention container 1 which accommodated the heat storage agent holder 150 of 2nd Embodiment. It is sectional drawing of the heat retention container 1B of 3rd Embodiment. It is the bb sectional view taken on the line of FIG. (A)-(C) is sectional drawing which shows each structure of the container opening / closing parts 60A-60C in 4th Embodiment.

Hereinafter, embodiments of the heat insulation container according to the present invention will be described.
Each of the drawings attached to this specification is a schematic diagram or a conceptual diagram, and in consideration of easy understanding, the shape, scale, vertical / horizontal dimensional ratio, etc. of each part are appropriately changed or exaggerated. ing. Numerical values, shapes, material names, and the like described in this specification are examples of the embodiment, and the present invention is not limited thereto and may be appropriately selected and used.
Further, in each drawing, hatching showing a cross section of a member is omitted.

  In the following description, the width direction of the heat insulation container 1 is the X direction. Since the heat insulating container 1 of the first embodiment has a cylindrical shape as a whole, the width direction corresponds to the radial direction. Further, the vertical direction orthogonal to the X direction is defined as the Y direction. For convenience of description, since the X direction is horizontal, the vertical Y direction is the vertical direction. In the Y direction, the upward direction is the Y1 direction and the downward direction is the Y2 direction (Y1 and Y2 are omitted depending on the drawing). In addition, in this specification, "direction" is also appropriately referred to as "side".

(First embodiment)
FIG. 1 is a perspective view showing the overall configuration of the heat retaining container 1 of the first embodiment.
FIG. 2 is a cross-sectional view of the heat insulation container 1.
FIG. 3 is an exploded cross-sectional view of the heat insulation container 1.
FIG. 4 is a sectional view taken along line aa of FIG.
2 and 3 are cross-sectional views when the radial center of the heat retaining container 1 is cut along a plane parallel to the XY plane.

As shown in FIGS. 1 and 2, the heat insulating container 1 according to the first embodiment includes a housing 10, a container body 20, a heat storage agent storage unit 30, a heat storage agent holder 50, and a container opening / closing unit 60.
The heat insulation container 1 of the first embodiment is a portable heat insulation container in which a beverage such as tea or coffee is a heat insulation target. The heat insulating container 1 of the first embodiment is formed so as to have a cylindrical shape as a whole.

<Case 10>
The housing 10 is a member arranged on the outermost side of the heat insulation container 1, and as shown in FIG. 2, a cross section parallel to the XY plane is formed in a concave shape.
The housing 10 is provided with a vacuum heat insulating layer 13 between the outer surface 11 and the inner surface 12. The vacuum heat insulating layer 13 is a layer filled with a gas having a pressure lower than atmospheric pressure. The vacuum heat insulating layer 13 communicates with the side surface of the housing 10 in the radial direction (X direction) and the bottom surface of the housing 10 below (Y2 side). That is, the vacuum heat insulating layer 13 is formed in the housing 10 to have a concave shape except for the container opening / closing portion 60 side.
The housing 10 is made of a metal member such as aluminum or stainless steel.

  As shown in FIGS. 2 to 4, a bottom support 14 is provided on the bottom surface 14 of the housing 10. The lower support portion 15 is a member that fits with an upper support portion 24 (described later) of the container body 20 to support the container body 20. The lower support portion 15 has a columnar shape and is joined to the bottom surface 14 of the housing 10. As shown in FIG. 4, the inner diameter of the lower support portion 15 is set to a size that can fit into the upper support portion 24 of the container body 20. The lower support portion 15 of the housing 10 and the upper support portion 24 of the container body 20 configure a support member that supports the container body 20 in the first embodiment.

  Further, as shown in FIG. 3, on the outer surface 11 of the housing 10, a screw portion 11s is provided at the upper (Y1 side) end portion. The screw part 11s is a male screw that engages with a screw part 61s of the container opening / closing part 60 (opening / closing part body 61) described later. In the first embodiment, the screw portion 11s and the screw portion 61s are reverse screws. Therefore, the container opening / closing unit 60 is attached to the housing 10 by rotating it counterclockwise. This is to prevent the container opening / closing section from rotating around and loosening when the lid 65 of the container opening / closing section 60 is rotated counterclockwise and removed. The screw part 11s and the screw part 61s may be positive screws, like the screw part 62s (cover attachment part 62) and the screw part 65s (cover 65) described later.

<Container body 20>
The container body 20 is a member provided inside the inner surface 12 of the housing 10, and as shown in FIG. 2, is formed so that its cross section parallel to the XY plane is substantially concave. An object to be kept warm (not shown) such as tea or coffee is stored inside the container body 20. The container body 20 of the first embodiment is configured such that the diameter gradually increases from the lower side (Y2 side) to the upper side (Y1 side). Therefore, a step is formed in a step shape inside the container body 20. Among the steps, the step line formed on the uppermost side of the container body 20 coincides with the water level line L indicating the upper limit position of the liquid level of the heat retention target. In the heat storage agent storage unit 30 (described later), a heat storage agent (heat storage agent holder 50) having a smaller mass density than the bottom portion 21 side of the container body 20 is stored above the water level line L (Y1 side). .

  In the first embodiment, an example in which the diameter of the container body 20 is widened in four steps will be described. However, the diameter of the container body 20 is at least 2 from the lower side (Y2 side) to the upper side (Y1 side). It may be configured so that it becomes wider at each stage. A heat storage agent storage portion 30 is formed in a gap formed between the outer surface 22 of the container body 20 and the inner surface 12 of the housing 10. A heat storage agent holder 50 (described later) is stored in the heat storage agent storage unit 30.

An upper support 24 is provided on the bottom 21 of the container body 20. The upper support 24 is a member that engages with the lower support 15 of the housing 10 to support the container body 20. The upper support 24 has a cylindrical shape and is joined to the bottom 21 of the container body 20. As shown in FIG. 4, the outer diameter of the upper support portion 24 is formed to a size that can be fitted to the inner peripheral side of the lower support portion 15 (housing 10). The upper support 24 is inserted on the inner peripheral side of the lower support 15. By fitting the lower support portion 15 of the housing 10 and the upper support portion 24 of the container body 20 to each other, the container body 20 can be stably supported inside the housing 10.
Like the housing 10, the container body 20 is made of a metal member such as aluminum or stainless steel.

<Heat storage agent storage section 30>
As shown in FIG. 2 or 3, the heat storage agent storage unit 30 is a substantially cylindrical space formed between the housing 10 and the container body 20. The heat storage agent storage unit 30 of the first embodiment is configured such that the diameter thereof gradually decreases from the lower side (Y2 side) of the container body 20 toward the upper side (Y1 side). Therefore, in the heat storage agent storage part 30, the storage space of the heat storage agent holder 50 becomes smaller gradually from the lower side to the upper side of the container body 20. In the heat storage agent storage portion 30, storage spaces S1 to S4 are formed that are gradually reduced from the lower side to the upper side of the container body 20. A heat storage agent (heat storage agent holder 50) having a mass density corresponding to the storage space is detachably stored in each storage space. As will be described later, the heat storage agent storage unit 30 is formed by storing the heat storage agent holder 50 inside the housing 10 and then fitting the container body 20 to the housing 10. The configuration of the heat storage agent holder 50 will be described later.

<Container opening / closing part 60>
As shown in FIG. 3, the container opening / closing part 60 is a member that opens or closes the opening 23 of the container body 20 and the opening 31 of the heat storage agent storage part 30. The container opening / closing unit 60 includes an opening / closing unit main body 61 and a lid 65. Each part that constitutes the container opening / closing part 60 may be formed of a metal member as in the case 10, or may be formed of a resin material such as plastic.

  The opening / closing unit body 61 is a member that is detachably attached to the housing 10, and is formed so that its cross section has a substantially convex shape. In the opening / closing part body 61, a screw part 61s is provided on the inner peripheral surface on the Y2 side which is the back side. The screw portion 61s is a female screw that engages with the screw portion 11s provided on the housing 10.

  As described above, the screw part 11s and the screw part 61s are reverse screws. Therefore, by rotating the opening / closing body 61 so that the screw portion 61s of the opening / closing body 61 engages with the screw portion 11s of the housing 10 in the counterclockwise direction, the opening / closing body 61 is attached to the housing 10. Can be installed. By attaching the opening / closing part body 61 to the housing 10, as shown in FIG. 2, the opening 23 of the container body 20 and the opening 31 of the heat storage agent storage part 30 are closed. Further, by removing the opening / closing unit body 61 from the housing 10, as shown in FIG. 3, the opening 23 of the container body 20 and the opening 31 of the heat storage agent storage unit 30 are opened.

  As shown in FIG. 3, a lid mounting portion 62 is provided at the center of the opening / closing body 61. The lid attachment portion 62 is a member to which a lid 65 (described later) is attached. Further, the lid mounting portion 62 has a function of allowing communication between the inside of the container body 20 and the outside of the container opening / closing portion 60 when the container opening / closing portion 60 is attached to the housing 10. The lid mounting portion 62 is provided with a communication hole 63. The heat retention target housed in the container body 20 is discharged to the outside from the communication hole 63 provided in the lid mounting portion 62. A screw portion 62s is provided on the outer peripheral surface on the upper side (Y1 side) of the lid mounting portion 62. The screw portion 62s is a male screw that engages with the screw portion 65s of the lid 65.

  The lid 65 is a member that is detachably attached to the lid attachment portion 62 (opening / closing portion body 61). A screw portion 65s is provided on the inner peripheral surface on the Y2 side, which is the back surface side of the lid 65. The screw portion 65s is a female screw that engages with the screw portion 62s provided on the lid mounting portion 62 (opening / closing portion body 61). In the first embodiment, the screw portion 62s and the screw portion 65s are positive screws. Therefore, the lid 65 is attached to the lid attachment portion 62 (container opening / closing portion 60) by rotating it clockwise.

  As described above, since the screw part 11s of the housing 10 and the screw part 61s of the container opening / closing part 60 are reverse screws, the opening / closing part body 61 is provided when the lid 65 is rotated counterclockwise and removed. It does not rotate and loosen. Since the communication hole 63 is closed by attaching the lid 65 to the lid attachment portion 62 in a state where the opening / closing body 61 is attached to the housing 10, the object to be kept warm in the container body 20 is the warming container 1 Retained inside. Further, when the lid 65 is removed from the lid mounting portion 62, the communication hole 63 is opened in a state where the opening 31 of the heat storage agent storage portion 30 is closed, so that the heat retention target stored in the container body 20 is transferred to the heat storage agent storage portion. It is possible to discharge the heat storage agent to the outside of the heat retaining container 1 without contacting the heat storage agent holder 50 housed in 30.

<Heat storage agent>
The heat storage agent is a substance that stores heat when it undergoes a phase change due to heating and releases the stored heat when it undergoes a phase change due to cooling. As the heat storage agent, for example, a latent heat storage agent can be used. A latent heat storage agent is a substance that stores heat by utilizing latent heat that enters and leaves when a substance undergoes a phase change. The latent heat storage agent continues to store heat in a specific temperature range, and when it exceeds the temperature range, the phase changes from solid to liquid or liquid to solid.

  As the latent heat storage agent, for example, substances such as barium hydroxide, stearic acid, sodium acetate / trihydrate can be used. The holding temperature of the heat storage agent (the temperature at which the heat retention target is desired to be kept warm) is adjusted by selecting the heat storage agent according to the melting temperature. For example, the melting temperature of barium hydroxide is about 80 to 85 ° C. The melting temperature of stearic acid is 65 to 70 ° C. The heat storage agents may be used as a mixture of two or more so that the melting temperature and the solidification temperature at the phase transition point become desired temperatures. Further, by adjusting the filling amount of the heat storage agent, the length of time for which the holding temperature can be maintained can be adjusted.

  As a heat storage agent, for example, when a solid latent heat storage agent having a melting temperature of 70 ° C. is heated, a part of the heat amount due to heating is absorbed as heat of fusion until the latent heat storage agent melts and undergoes a phase change to a liquid. , Stored in latent heat storage agent. Therefore, for example, the 90 ° C. hot water poured into the heat insulation container 1 is cooled in a short time and reaches a temperature close to the melting temperature (70 ° C.) of the heat storage agent. After that, the heat quantity of the hot water stored in the heat insulation container 1 is gradually released to the outside with the passage of time. Along with this, the latent heat storage agent that has become liquid is cooled and gradually changes into a solid phase. Until the latent heat storage agent is cooled and undergoes a phase change from a liquid to a solid, the amount of heat corresponding to the stored heat of fusion is released as heat of solidification. The temperature of the hot water stored in the heat retention container 1 is maintained at about 70 ° C. by the heat of solidification released by the heat storage agent until the latent heat storage agent changes its phase from liquid to solid.

  Since the latent heat storage agent can maintain a specific temperature region, it can keep the temperature of warm beverages higher than the outside temperature, or keep the temperature of cold beverages lower than the outside temperature. In the first embodiment, the former will be described as an example, but which purpose the latent heat storage agent is used for depends on the temperature range to be kept warm. In the former case, a latent heat storage agent capable of maintaining a temperature range of 10 ° C or higher is used as the heat storage agent, and in the latter case, a temperature range of less than 10 ° C, especially 5 ° C or lower, particularly 0 ° C or lower is retained as the heat storage agent. A latent heat storage agent that can be used is used. The same applies to the sensible heat storage agent.

  When keeping a warm beverage at a constant temperature, a heat storage agent having a low melting temperature (for example, sodium sulfate decahydrate having a melting temperature of 30 ° C.) is selected. Then, the type of the beverage stored in the heat retaining container 1, the initial temperature (the temperature immediately after putting the beverage at 100 ° C. in the heat retaining container 1 and closing the lid), the holding temperature (the most suitable temperature for drinking the beverage) ), Design so that the heat capacity calculated from the type of heat storage agent, initial temperature, melting temperature, solidification temperature, and volume is smaller than the heat dissipation calculated from the volume, and the relative ratio of heat dissipation to heat capacity is Adjust to set hold temperature. As a result, the heat storage agent is less likely to fall to the melting temperature due to the surplus heat quantity that is the difference between the heat radiation amount of the beverage and the heat capacity of the heat storage agent, so the holding temperature is kept in a temperature range higher than the melting temperature of the heat storage agent. be able to.

Here, the relationship between the heat retention temperature and the filling amount of the heat storage agent will be described with a specific example.
Table 1 shown below is a table in which the amount of the heat storage agent required to maintain the holding temperature after the sampled beverage was stored in the heat retention container 1 was calculated. Three types of beverages, coffee, green tea, and gyokuro, were prepared as samples. Each beverage has a weight of 500 g, an initial temperature of 100 ° C., and a specific heat of 4.217 kJ / (kg · K). It should be noted that, when actually making these beverages, the initial temperature is not set to 100 ° C., but in order to unify the conditions, the initial temperature is set to 100 ° C.

Moreover, sodium acetate hydrate / trihydrate (CH ₃ COONa / 3H ₂ O) was prepared as a heat storage agent. Sodium acetate hydrate / trihydrate has a melting temperature of 43 ° C., a solidification temperature of 40 ° C., a heat storage amount of 177 kJ / kg, and a specific heat of 2.7 kJ / (kg · K). The initial temperature (starting temperature of use) of the heat storage agent is 25 ° C.

  As shown in Table 1, since the holding temperature of coffee and green tea is higher than the melting temperature (43 ° C) of the heat storage agent, the heat capacity of the heat storage agent can be reduced by reducing the volume of the heat storage agent. It can be smaller than the amount of heat. Therefore, the filling amount of the heat storage agent when keeping the temperature of coffee and green tea relatively smaller than that of gyokuro, which has a small amount of heat radiation. On the other hand, since the holding temperature of gyokuro is almost the same as the melting temperature of the heat storage agent, the heat capacity of the heat storage agent can be made smaller than the heat radiation amount of gyokuro by increasing the volume of the heat storage agent. Therefore, the filling amount of the heat storage agent when the gyokuro is kept warm is relatively large as compared with coffee and green tea.

The filling amount of the heat storage agent with respect to the holding temperature of the beverage (liquid) can be calculated, for example, by the following formula (1).
Weight of heat storage agent [g] = (weight of liquid [g] × specific heat of liquid [J / (g · K)] × (initial temperature of liquid [° C.]-Holding temperature of liquid [° C.])) / (( Latent heat quantity of heat storage agent [J / g] + specific heat of heat storage agent [J / (gK)] x (liquid holding temperature [° C] -initial temperature of heat storage agent [° C]))
... (1)

  When the beverage is stored in the heat insulation container, a part of the heat amount initially held by the beverage is transferred to the heat storage agent as sensible heat and latent heat. As a result, the temperature of the beverage drops and the temperature of the heat storage agent rises. When the temperature of the heat storage agent rises and reaches a temperature equal to the holding temperature of the beverage, the amount of heat lost by the beverage and the amount of heat obtained by the heat storage agent become equal. The above formula (1) is a modification of the formula showing that the amount of heat lost by the beverage and the amount of heat obtained by the heat storage agent are equal in a situation where the temperature of the heat storage agent becomes equal to the holding temperature of the beverage. The weight of is left on the left side.

  Since the heat storage agent holder 50 described below is a packaged product of individual packaging in which the filling amount of the heat storage agent enclosed in the packaging body 51 is different, when keeping the temperature of the coffee, the heat storage agent holding amount corresponding to the filling amount of 200 g is held. The body 50 may be loaded. Further, when keeping the temperature of sencha warm, the heat storage agent holder 50 may be loaded in an amount corresponding to the filling amount of 300 g. Further, when the gyokuro is kept warm, the heat storage agent holder 50 may be loaded in an amount corresponding to the filling amount of 600 g. As described above, in the heat retention container 1 of the first embodiment, the heat retention target is kept warm at a temperature suitable for the type by changing the filling amount of the heat storage agent according to the holding temperature of the heat retention target. You can The difference in the filling amount of the heat storage agent from the filling amount shown in Table 1 above is about several to several tens of grams is within the allowable range.

<Heat storage agent holder 50>
5A to 5D are perspective views showing the forms of the heat storage agent holders 50A to 50D. In FIGS. 5A to 5D, the shapes of the heat storage agent holders 50A to 50D are schematically shown, and thus the size, the aspect ratio, and the like are different from those in FIG. 6 described later. Hereinafter, the heat storage agent holders 50A to 50D are collectively referred to as "heat storage agent holder 50".
The heat storage agent holder 50 is an individually packaged product in which the heat storage agent is enclosed. In the heat storage agent holder 50, the heat storage agent is enclosed in a package 51 made of plastic or the like. As shown in FIGS. 5 (A) to 5 (D), the package 51 of the heat storage agent holder 50 has a cylindrical shape having an opening penetrating therethrough.

  FIG. 5 (A) shows the heat storage agent holder 50A stored in the storage space S1 (see FIG. 2) of the heat storage agent storage portion 30. FIG. 5B shows a heat storage agent holder 50B stored in the storage space S2 (see FIG. 2) of the heat storage agent storage portion 30. FIG. 5C shows a heat storage agent holder 50C stored in the storage space S3 (see FIG. 2) of the heat storage agent storage portion 30. FIG. 5D shows the heat storage agent holder 50D stored in the storage space S4 (see FIG. 2) of the heat storage agent storage portion 30.

  Explaining the heat storage agent holder 50A shown in FIG. 5A as an example, the outer diameter D1, the inner diameter D2, and the height H of the packaging body 51 are the same as those of the heat storage agent holder 50A (50B to 50D) of the housing 10. After being stored in the storage space S1 (S2 to S4), the container body 20 is set to have a size capable of being stored inside the housing 10. That is, the size of each part of the heat storage agent holders 50A to 50D is set to a size that can be stored in the storage spaces S1 to S4 of the heat storage agent storage portion 30 formed by storing the container body 20 inside the housing 10. To be done. A slight gap may be formed between the heat storage agent holder 50 and the heat storage agent storage unit 30. Since the inside of the heat storage agent storage unit 30 is warmed over time due to the heat insulating function of the vacuum heat insulating layer 13 outside the heat storage agent storage unit 30, the heat storage agent holder 50 can absorb a sufficient amount of heat.

  The heat storage agent holders 50A to 50D differ in the amount of the heat storage agent filled in the inside of the package 51. The amount of the heat storage agent increases in the order of the heat storage agent holders 50D, 50C, 50B and 50A. Therefore, the mass density of the heat storage agent stored in the heat storage agent storage portion 30 is larger on the bottom portion 21 side of the container body 20 than on the opening portion 23 side of the container body 20. Therefore, in the first embodiment, the storage space S4 above the water level line L (see FIG. 2) of the container body 20 (Y1 side) is stored below the water level line L of the container body 20 (Y2 side). A heat storage agent (heat storage agent holder 50D) having a mass density smaller than that of the spaces S1 to S3 is stored. The mass density of the heat storage agent refers to the mass of the heat storage agent per unit area.

  As the heat storage agent holders 50A to 50D, those having different amounts of the heat storage agent filled in the packaging body 51 are prepared. For example, in the heat storage agent holders 50A to 50C stored in the storage spaces S1 to S3 on the lower side (Y2 side) of the water level line L of the container body 20, the heat storage agent filling amount is 25 g to 200 g. Is prepared. Further, in the storage space S4 above the water level line L of the container body 20 (on the Y1 side), in the heat storage agent holder 50D, several types are prepared with the heat storage agent filling amount ranging from 5 g to 10 g. The user appropriately selects the filling amount of the heat storage agent holders 50A to 50D to be stored in each of the storage spaces S1 to S4 in accordance with the type of the heat insulating target, thereby making it possible to obtain an amount suitable for the type of the heat insulating target. Can store heat storage agents. For example, when keeping warm green tea, the heat storage agent holders 50A (100 g), 50B (100 g), 50C (100 g), and 50D (10 g) may be selected (see Table 1).

Next, a method for attaching the heat storage agent holder 50 to the heat retaining container 1 will be described.
6 and 7 are diagrams illustrating a method of mounting the heat storage agent holder 50 on the heat retention container 1.
First, as shown in FIG. 6A, the container opening / closing portion 60 and the container body 20 (not shown) are removed from the housing 10 to open the upper side (Y1 side) of the housing 10. Then, the heat storage agent holders 50A to 50D are inserted into the housing 10 from the upper side of the housing 10. At this time, the heat storage agent holders 50A to 50D are inserted in the order of the heat storage agent holders 50A, 50B, 50C, and 50D from the lower side (Y2 side) of the housing 10 to the upper side (Y1 side).

  Next, as shown in FIG. 6B, the container body 20 is inserted into the housing 10, and the lower support portion 15 of the housing 10 and the upper support portion 24 of the container body 20 are fitted to each other. . As a result, the heat storage agent holders 50A to 50D inserted into the housing 10 are stored between the housing 10 and the container body 20, that is, inside the heat storage agent storage portion 30.

  Next, as shown in FIG. 7C, the screw part 11s of the housing 10 and the screw part 61s of the opening / closing part body 61 (container opening / closing part 60) are engaged to rotate the opening / closing part body 61 counterclockwise. Rotate with. As a result, the container opening / closing portion 60 can be attached to the housing 10 as shown in FIG. By attaching the container opening / closing part 60 to the housing 10, the heat retaining container 1 having the heat storage agent holders 50A to 50D stored therein is completed. In the heat insulating container 1, a heat insulating object (not shown) can be poured into the container body 20 through the communication hole 63 by removing the lid 65 (the container opening / closing portion 60). Further, the object to be kept warm may be poured into the container body 20 before the container opening / closing part 60 is attached to the housing 10.

According to the heat insulation container 1 of the first embodiment described above, for example, the following effects are achieved.
In the heat retention container 1 of the first embodiment, the mass density of the heat storage agent (heat storage agent holder 50) stored in the heat storage agent storage portion 30 is larger on the bottom portion 21 side than on the opening portion 23 side of the container body 20. Is set. According to this, the thermal conductivity of the heat storage agent holder 50D housed above the water level line L (see FIG. 2) becomes small, so that the amount of heat radiated from the upper side of the container body 20 to the outside can be reduced. Further, when the lid 65 of the heat retention container 1 is removed, the amount of heat exchanged between the outside air and the heat storage agent holder 50D becomes small, so that the mass density of the heat storage agent above the water level line L is increased. The heat storage agent is less likely to be deprived of heat by the outside air, as compared with the case. Therefore, in the heat insulating container 1 of the first embodiment, it is possible to suppress the temperature decrease of the heat insulating object not only when the lid 65 is closed but also when the lid 65 is opened.

Further, according to the heat retention container 1 of the first embodiment, the heat storage agent (heat storage agent holder 50) having a filling amount corresponding to the heat retention temperature of the heat retention target can be appropriately selected and stored in the heat storage agent storage unit 30. Since this is provided, the user can arbitrarily set the optimum temperature for keeping the object to be kept warm.
In the heat retention container 1 of the first embodiment, the heat storage agent is sealed inside the heat storage agent holder 50, so that the user measures the heat storage agent or puts it in the heat storage agent storage unit 30 using a tool. No need for labor. Therefore, the user can easily change the filling amount of the heat storage agent.

In the heat insulating container 1 of the first embodiment, the container body 20 is supported by a support member including a lower support portion 15 of the housing 10 and an upper support portion 24 of the container body 20. Therefore, the heat insulating container 1 can stably support the container body 20 inside the housing 10.
According to the heat retaining container 1 of the first embodiment, the container opening / closing unit 60 includes the lid 65 that opens the opening 23 of the container body 20 in a state where the opening 31 of the heat storage agent storage unit 30 is closed. Therefore, the heat insulating container 1 can discharge the heat insulating object stored in the container body 20 to the outside of the heat insulating container 1 without contacting the heat storage agent holding body 50 stored in the heat storage agent storage portion 30. it can.

(Second embodiment)
1 A of heat insulation containers of 2nd Embodiment differ in the structure of the container main body 120, the heat storage agent storage part 130, and the heat storage agent holding body 150 from 1st Embodiment. Other configurations are the same as those in the first embodiment. Therefore, in the description of the second embodiment and the drawings, the same reference numerals or the same reference numbers (the last two digits) are given to the same members and the like as those in the first embodiment, and duplicate explanations are omitted.
FIG. 8 is a cross-sectional view of the heat insulation container 1A of the second embodiment. Similar to FIG. 2 of the first embodiment, FIG. 8 is a cross-sectional view when the radial center of the heat retaining container 1A is cut along a plane parallel to the XY plane.

<Container body 120>
As shown in FIG. 8, the container body 120 of the second embodiment is configured such that the diameter thereof continuously increases from the lower side (Y2 side) to the upper side (Y1 side). In FIG. 8, the line corresponding to the step formed on the container body 120 of the first embodiment is shown by a chain double-dashed line. Among these, the line (solid line) located on the uppermost side of the container body 20 coincides with the water level line L indicating the upper limit position of the liquid surface of the heat retention target. Also in the second embodiment, the heat storage agent (heat storage agent holder 150) having a smaller mass density than the bottom portion 21 side of the container body 20 is stored above the water level line L of the heat storage agent storage unit 30 (Y1 side). To be done.

  The heat storage agent storage portion 130 of the second embodiment is configured such that the diameter thereof continuously decreases from the lower side (Y2 side) of the container body 20 toward the upper side (Y1 side). Therefore, in the heat storage agent storage part 130, the storage space of the heat storage agent holder 150 is continuously reduced from the lower side to the upper side of the container body 120. In the heat storage agent storage portion 130, storage spaces S1 to S4 are formed that are gradually reduced from the lower side to the upper side of the container body 120. The storage spaces S1 to S4 of the second embodiment are obtained by virtually dividing the internal space of the heat storage agent storage unit 130 in accordance with the shapes of the heat storage agent holders 150A to 150D (described later). A heat storage agent (heat storage agent holder 150D) having a mass density corresponding to the storage space is detachably stored in each storage space.

<Heat storage agent holder 150>
9A to 9D are perspective views showing the forms of the heat storage agent holders 150A to 150D. 9A to 9D, the shapes of the heat storage agent holders 150A to 150D are schematically shown, and thus the size, the aspect ratio, and the like are different from those in FIG. 10 described later. Hereinafter, the heat storage agent holders 150A to 150D are collectively referred to as "heat storage agent holder 150".
FIG. 10: is sectional drawing of the heat retention container 1 which accommodated the heat storage agent holder 150 of 2nd Embodiment. FIG. 10 is a sectional view corresponding to FIG. 7D of the first embodiment.

  The heat storage agent holder 150, like the heat storage agent holder 50 of the first embodiment, is an individually packaged product in which the heat storage agent is enclosed. In the heat storage agent holder 150, the heat storage agent is enclosed in a package 151 made of plastic or the like. As shown in FIGS. 9A to 9D, the package 151 of the heat storage agent holder 150 has a cylindrical shape having an opening penetrating therethrough.

  FIG. 9A shows a heat storage agent holder 150A stored in the storage space S1 (see FIG. 8) of the heat storage agent storage portion 130. FIG. 9B shows the heat storage agent holder 150B stored in the storage space S2 (see FIG. 8) of the heat storage agent storage portion 130. FIG. 9C shows a heat storage agent holder 150C stored in the storage space S3 (see FIG. 8) of the heat storage agent storage section 130. FIG. 9D shows the heat storage agent holder 150D stored in the storage space S4 (see FIG. 8) of the heat storage agent storage portion 130.

  Explaining the heat storage agent holder 150A shown in FIG. 9 (A) as an example, the outer diameter D1, the inner diameters D2, D3, and the height H of the package 151 are the same as the heat storage agent holder 150A (150B to 150D). After being stored in the storage space S1 (S2 to S4) of 10, the container body 120 is set to a size capable of being stored inside the housing 10. That is, the size of each part of the heat storage agent holders 150 </ b> A to 150 </ b> D is set to a size that can be stored in the storage spaces S <b> 1 to S <b> 4 of the heat storage agent storage section 130 formed by storing the container body 120 inside the housing 10. To be done.

  Like the heat storage agent holders 50A to 50D of the first embodiment, the heat storage agent holders 150A to 150D are different from each other in the amount of the heat storage agent filled in the package 151. The amount of the heat storage agent increases in the order of the heat storage agent holders 150D, 150C, 150B and 150A. Therefore, the mass density of the heat storage agent stored in the heat storage agent storage portion 130 is larger on the bottom portion 21 side of the container body 120 than on the opening portion 23 side of the container body 120. Therefore, in the second embodiment, the storage space S4 above the water level line L (see FIG. 8) of the container body 120 (Y1 side) is stored below the water level line L of the container body 120 (Y2 side). A heat storage agent (heat storage agent holder 150D) having a mass density smaller than that of the spaces S1 to S3 is stored. Regarding the heat storage agent holders 150A to 150D of the second embodiment, as in the heat storage agent holders 50A to 50D of the first embodiment, those having different amounts of the heat storage agent filled in the package 151 are different. Be prepared.

The container body 120 and the heat storage agent holders 150A to 150D of the second embodiment can be housed in the housing 10 in the same procedure as the heat storage agent holder 50 of the first embodiment (see FIGS. 6 and 7). After housing the heat storage agent holder 150 in the housing 10, the container opening / closing part 60 is attached to the housing 10 to complete the heat retaining container 1A having the heat storage agent holder 150 housed therein, as shown in FIG. To do. By removing the lid 65 (container opening / closing part 60), the heat retaining container 1A can pour a heat retaining object (not shown) into the container body 120 through the communication hole 63. Further, the object to be kept warm may be poured into the container body 120 before the container opening / closing part 60 is attached to the housing 10.
Also in the heat insulation container 1A of the second embodiment, the same effect as that of the heat insulation container 1 of the first embodiment can be obtained.

<Third Embodiment>
The heat retaining container 1B of the third embodiment is different from that of the first embodiment in the configuration of the heat storage agent holder 50. Other configurations are the same as those in the first embodiment. Therefore, in the description of the third embodiment and the drawings, the same members and the like as those in the first embodiment will be denoted by the same reference numerals, and overlapping description will be omitted.
FIG. 11: is sectional drawing of the heat retention container 1B of 3rd Embodiment. FIG. 11 is a sectional view when the radial center of the heat retaining container 1B is cut along a plane parallel to the XY plane, as in FIG. 2 of the first embodiment.
FIG. 12 is a sectional view taken along line bb of FIG. 11. In FIG. 12, the heat storage agent holder 50A is not shown.

As shown in FIG. 11, in the heat retaining container 1B of the third embodiment, the heat storage agent holder 50E is arranged between the bottom surface 14 of the housing 10 and the bottom portion 21 of the container body 20. The heat storage agent holder 50E is formed in a short cylindrical shape in the vertical direction (Z direction). As shown in FIG. 12, the outer diameter D4 of the heat storage agent holder 50E is set to be substantially the same as the bottom portion 21 of the container body 20. The inner diameter D5 of the opening 52 provided in the center of the heat storage agent holder 50E is set to be substantially the same as the outer diameter of the lower support portion 15. The heat storage agent holder 50E can be housed in the bottom surface 14 of the housing 10 by fitting the opening 52 of the heat storage agent holder 50E into the lower support portion 15.
6A, the heat storage agent holder 50E may be stored before the heat storage agent holders 50A to 50D are stored in the housing 10, or the heat storage agent holders 50A to 50D are stored. You may store it after doing.

  In the heat insulation container 1B of the third embodiment, the heat storage agent holder 50E is arranged immediately below the bottom portion 21 of the container body 20 in which the heat insulation object stays for a long time, so that the heat insulation object can be maintained at an optimum temperature for a longer time. Further, by disposing the heat storage agent holder 50E immediately below the bottom portion 21 of the container body 20, the amount of the heat storage agent can be increased without newly providing a storage space. According to this, since the amount of the heat storage agent filled in the other heat storage agent holders 50 can be relatively reduced by the amount of the heat storage agent filled in the heat storage agent holder 50E, the whole heat insulating container 1B can be further improved. Can be made into a slim shape.

In the heat retention container 1B of the third embodiment, the outer diameter D4 (see FIG. 12) of the heat storage agent holder 50E is set to be the same as the inner diameter of the bottom surface 14 of the housing 10 to hold the heat storage agent stored in the storage space S1. The vertical length (Z direction) of the body 50A may be shortened by the thickness of the heat storage agent holder 50E.
Further, in the heat insulation container 1B of the third embodiment, the configuration in which the heat storage agent holder 50E is arranged between the bottom surface 14 of the housing 10 and the bottom portion 21 of the container body 20 is the same as in the heat insulation container 1A of the second embodiment. Applicable.

<Fourth Embodiment>
The heat insulation container 1 of the fourth embodiment differs from that of the first embodiment in the structure of the container opening / closing part. The other configurations of the fourth embodiment are the same as those of the first embodiment. Therefore, in FIGS. 13A to 13C, only the container opening / closing sections 60A to 60C are illustrated, and the whole illustration of the heat retaining container 1 is omitted. Further, in the description and drawings of the fourth embodiment, members and the like equivalent to those of the first embodiment are designated by the same reference numerals as those of the first embodiment, and redundant description will be omitted.

13A to 13C are cross-sectional views showing respective configurations of container opening / closing sections 60A to 60C in the fourth embodiment.
As shown in FIG. 13A, the container opening / closing unit 60A having the first configuration is configured so that the entire container opening / closing unit 60A functions as a lid.
As shown in FIG. 13B, the container opening / closing unit 60B of the second configuration includes a vacuum heat insulating layer 66 and a heat storage agent storage unit 67 inside. The heat storage agent holder 50 (not shown) stored in the heat storage agent storage portion 67 is formed in a disc shape. The heat storage agent holder 50 in the present embodiment may be detachable from the heat storage agent storage portion 67, or may be fixed inside the heat storage agent storage portion 67.

As shown in FIG. 13C, the container opening / closing unit 60C having the third configuration includes a straw holding unit 68 that holds the straw ST in the center. The straw holding portion 68 is a sleeve-like component, and is attached so as to penetrate the container opening / closing portion 60C in the vertical direction (Y direction). According to the container opening / closing unit 60C of the third configuration, the user can drink the object to be kept warm without opening the lid, so that the effect of keeping warm by the heat storage agent holder 50 (not shown) can be prolonged. I can maintain time. In addition, in the container opening / closing part 60C of the third configuration, an opening hole into which the straw ST can be inserted may be provided instead of the straw holding part 68. The third configuration illustrated in FIG. 13C can be applied to the above-described first and second configurations.
Further, the configurations of the container opening / closing sections 60A to 60C shown in the fourth embodiment can be applied to the heat insulating containers of the first to third embodiments.

Although the first to fourth embodiments have been described above, the specific examples of the heat insulating container according to the present invention are not limited to these embodiments, and various modifications and changes can be made as in modifications described later. However, they are also included in the technical scope of the present invention. In addition, the effects described in the embodiments are merely enumerations of the most preferable effects that occur from the present invention, and are not limited to those described in the embodiments. The above-described embodiment and the modification described below can be used in an appropriate combination, but detailed description thereof will be omitted. Hereinafter, the first embodiment will be described as an example, but the configuration of the modified embodiment can be appropriately applied to other embodiments.
(Modified form)

  In the first embodiment, as shown in FIG. 7, an example in which the heat storage agents (heat storage agent holding bodies 50A to 50D) are stored in all the storage spaces S1 to S4 of the heat storage agent storage section 30 has been described, but the present invention is not limited to this. Not done. In the heat storage agent storage unit 30, the heat storage agent (heat storage agent holder 50D) may not be placed in the uppermost (Y1 side) storage space S4. Also in the case of such a configuration, as in the first embodiment, the mass density of the heat storage agent stored in the heat storage agent storage portion 30 is lower than that of the opening portion 23 side of the container body 20 in the bottom portion 21 of the container body 20. Side becomes bigger. Therefore, even in the case where the heat storage agent is not put in the storage space S4 of the heat storage agent storage portion 30, the same effect as that of the first embodiment can be obtained.

  In the first embodiment, as shown in FIG. 1, an example in which the shape of the heat insulation container 1 is cylindrical has been described, but the present invention is not limited to this. The heat retaining container 1 may have any shape as long as the heat storage agent storage portion 30 that stores the heat storage agent in a removable manner can be provided between the housing 10 and the container body 20. For example, the shape of the heat insulation container 1 may be a rectangular parallelepiped.

  In the first embodiment, as shown in FIG. 6A, an example in which the individual heat storage agent holders 50A to 50D are housed inside the housing 10 has been described, but the present invention is not limited to this. The heat storage agent holders 50A to 50D may be integrated and housed in the housing 10 as one heat storage agent holder. That is, the heat insulation container 1 of the embodiment can store one or a plurality of heat storage agent holders in the area serving as the heat storage agent storage unit 30.

In the first embodiment, beverages such as tea and coffee have been described as an example of the object to be kept warm, but the object to be kept warm is not limited to this. The object to be kept warm may be any one as long as it needs to be kept warm at a constant temperature.
Further, the heat-retaining container 1 is not limited to a single beverage, a container for food, or the like, but may be a container for storing a plurality of food materials such as a lunch box.

  The heat insulation container 1 of the first embodiment can be used as a general heat insulation container called a so-called thermos bottle if the heat storage agent holder 50 is not inserted. Further, if a heat insulating material is put in place of the heat storage agent holder 50, it can be used as a heat retaining container having a better heat retaining property.

1, 1A, 1B Thermal insulation container 10 Housing 11 Outer surface 12 Content surface 13 Vacuum heat insulating layer 15 Lower support part (supporting member)
20, 120 Container body 23 Opening 24 Upper support (support member)
30, 130 Heat storage agent storage section 31 Opening section 40 Support member 50, 50A to 50E, 150, 150A to 150D Heat storage agent holding body 51, 151 Packaging body 60 (60A to 60C) Container opening / closing section 61 Opening / closing section body 62 Lid attachment Part 63 Communication hole 65 Lid

Claims (8)

A heat storage agent that keeps the target object warm,
A first vacuum heat insulating layer is provided between the outer surface and the inner surface, and the housing has a concave cross section,
A container body that is provided inside the inner surface of the housing, has a concave cross section, and accommodates an object to be kept warm,
A first heat storage agent storage portion that is formed between the housing and the container body and stores the heat storage agent;
A container opening / closing unit that opens or closes the opening of the container body and the opening of the first heat storage agent storage unit;
The inner surface of the container body is provided with a water level line indicating the upper limit position of the liquid level of the heat retention object housed in the container body,
In the first heat storage agent storage section, the heat storage agent having a smaller mass density than the bottom side of the container body is stored on the opening side of the water level line of the container body ,
The container opening / closing unit includes a second vacuum heat insulating layer on a side facing the opening of the container body and the opening of the first heat storage agent storage unit, and a second heat storage agent storage unit storing the heat storage agent. insulated container that provided in the order. A heat storage agent that keeps the target object warm,
A first vacuum heat insulating layer is provided between the outer surface and the inner surface, and the housing has a concave cross section,
A container body that is provided inside the inner surface of the housing, has a concave cross section, and accommodates an object to be kept warm,
A first heat storage agent storage portion that is formed between the housing and the container body and stores the heat storage agent;
A container opening / closing unit that opens or closes the opening of the container body and the opening of the first heat storage agent storage unit;
The inner surface of the container body is provided with a water level line indicating the upper limit position of the liquid level of the heat retention object housed in the container body,
In the first heat storage agent storage unit, the heat storage agent is not stored on the opening portion side of the water level line of the container body ,
The container opening / closing unit includes a second vacuum heat insulating layer on a side facing the opening of the container body and the opening of the first heat storage agent storage unit, and a second heat storage agent storage unit storing the heat storage agent. Thermal insulation container provided in order . The heat insulation container according to claim 1 or 2, wherein
The container opening / closing part includes a lid that opens the opening of the container body in a state where the opening of the first heat storage agent storage part is closed, and a lid mounting part to which the lid is attached,
A heat retaining container in which the lid and the lid mounting portion are engaged with a positive screw, and the housing and the container opening / closing portion are engaged with a reverse screw. The heat insulating container according to any one of claims 1 to 3,
A heat storage agent holder for holding a predetermined amount of the heat storage agent inside,
The first heat storage agent storage part is a heat retaining container that stores one or a plurality of the heat storage agent holders in a removable manner. The heat insulation container according to any one of claims 1 to 4,
A heat insulating container comprising a support member for supporting the container body between the inside of the housing and the outside of the container body. The heat insulation container according to any one of claims 1 to 5,
A heat retaining container in which a heat storage agent is housed between the bottom of the container body and the bottom of the casing. The heat insulating container according to any one of claims 1 to 6,
The first heat storage agent storage part is a heat retaining container in which the storage space for the heat storage agent is gradually reduced from the bottom side of the container body toward the opening side. The heat insulating container according to any one of claims 1 to 6,
The first heat storage agent storage part is a heat retaining container in which the storage space for the heat storage agent is continuously reduced from the bottom side of the container body toward the opening side.

Images