JP5288807B2 - Cold storage container - Google Patents

Description

  The present invention relates to a cold storage container that can keep the temperature of a stored item at a constant cold temperature by putting a cold storage agent together with the stored item and capping.

  As for a cold insulation container having a heat insulation performance capable of maintaining a predetermined temperature with a cold insulation agent, a lightweight foamed polystyrene box and Patent Document 1 by the present applicant are known.

  Styrofoam boxes are practical because they are lightweight and have high rigidity, so that they can be used for stacking. However, they cannot be folded when not in use, and there are problems in transportation costs due to transportation of empty boxes.

  The cold insulation container described in Patent Document 1 is a solution to the above-described problems, and includes a holding member including a bottomed box-shaped exterior sheet and a holding sheet formed inside thereof, and a heat insulating plate is placed in the holding sheet. It is configured as a box-shaped cold storage container. When the container is not used, it can be folded compactly while still in the holding sheet, and it has the rigidity that can withstand the use of stacking, thus realizing efficient transportation and cost reduction.

  Conventionally, in such a cold storage container, first, the container to be cooled is first packed in the container, and the cold storage agent is put into the space above the storage container, and the storage object is kept at a low temperature by the cold air of the cold storage agent. It has become.

  However, if the contents were packed in large quantities without gaps, the cold air would not spread throughout the contents without venting between the contents. In this case, although the vicinity of the cold-retaining agent was sufficiently kept cold, the cold air did not reach the bottom of the container, the temperature inside the container was uneven, and the whole was not sufficiently cooled.

In order to ensure the cool temperature of the stored items, on-site measures such as first packing the cold storage agent on the bottom of the cold storage container, placing the stored item on it, and then packing the cold storage agent on top of it. Although it has been done, problems such as an increase in cost due to an increase in the amount of use of the cryogen, an increase in the number of man-hours for separately inserting the cryogen, and a decrease in the accommodation efficiency of the contents due to the presence of the cryogen at the bottom have occurred. Yes.
JP 2000-203665 A

  The problem to be solved is that in the conventional cold storage container, in order to ensure sufficient cold storage performance, problems such as reduction in the storage efficiency and work efficiency of the items to be kept cold have occurred. It is an object of the present invention to provide a cold storage container that can obtain sufficient cold storage performance without deteriorating accommodation efficiency and work efficiency.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a holding sheet is formed on each of the bottom surface, the four side surfaces, and the lid of the box-shaped outer sheet, and is synthesized between the outer sheet and the holding sheet. By holding a heat insulating plate made of resin material, form a box-shaped container with heat insulation and rigidity,
A plurality of vertical grooves are formed on the inner surface side of the heat insulating plate material on at least one side of the four side surfaces to form a cold air flow path, and ventilation windows formed of mesh are provided on the upper and lower portions of the holding sheet covering it. The cold insulation container is configured by connecting these ventilation windows and the flow passage.
According to a second aspect of the present invention, in the configuration of the first aspect, the insulating sheet material on the bottom surface of the container forms a plurality of vertical grooves on the upper surface side to form a cold air flow path, and the holding sheet that covers it Is provided with two or more ventilation windows formed of mesh, connecting these ventilation windows and the flow passage, and one of the ventilation windows is located in the vicinity of the lower ventilation window .

Cold container according to claim 1, wherein, if accommodated contained goods and the cold insulating agent in a conventional method of placing a wet ice on the contained object after stuffing contained goods in a container, cold air cold agent upper vent It flows out from the lower ventilation window through the flow path of the heat insulating plate material from the window, and as a result, the cold air of the coolant at the top of the container surely reaches the bottom of the container, and the whole is sufficiently cooled and packed at the bottom of the container It is possible to keep the stored items at a sufficiently low temperature.
In addition, since the holding sheet covers the vertical grooves of the heat insulating plate material that constitutes the flow path, the vertical grooves are protected without being damaged even if the contents hit them, and the flow paths are always kept without clogging the vertical grooves. Secured.
Furthermore, since the ventilation window is formed of a mesh to prevent the vertical groove from being exposed, the above-mentioned protection function and the flow path securing function of the holding sheet are not hindered by the contents.
In addition, since the heat insulating plate made of synthetic resin material gives not only heat insulation but also rigidity to the box-shaped container, the heat insulating dedicated material and the rigidity dedicated material can be omitted, and the heat insulating plate is made of a box shape. Since it is provided between the exterior sheet and the holding sheet and is connected to the adjacent heat insulating plate via both sheets, the shape of the container can be well held in a box shape even when a strong external force is applied.

If the coercive cold container according to claim 2, wherein, since the cool air flowing out from the lower portion of the ventilation window is spread from four sides of the container bottom through the flow passage of the bottom surface of the heat-insulating plate from the vent window of the bottom surface of the proximity to the far position, Keep the entire container cool enough.

  Hereinafter, with reference to FIG. 1 thru | or FIG. 3, embodiment of the cold storage container which concerns on this invention is described. FIG. 1 is a partially broken perspective view in which a part of a cold storage container according to the present invention is disassembled, FIG. 2 is an enlarged sectional view of the upper part of the four side surfaces, and FIG. 3 is an enlarged sectional view of the lower part of the four side surfaces. .

  As shown in FIG. 1, the cold container 1 according to the present embodiment includes a box-shaped exterior sheet 10 having a bottom surface, four side surfaces, and a lid, and a retaining member 11 provided inside the exterior sheet 10. And holding a heat insulating plate 2 to form a bottomed box-shaped container. First, the heat insulating plate material 2 will be described.

  The heat insulating plate 2 is formed of a synthetic resin material having sufficient heat insulating properties such as polypropylene, polyethylene, and expanded polystyrene. The heat insulating plate 2 is provided with a flow passage through which the gas in the container can be vented, and the holding sheet 11 on the inner surface side of the container is provided with an open portion that leads to the flow passage, thereby forming cold air circulation means.

  In this embodiment, the flow passage is formed integrally with the heat insulating plate 2. The flow path includes a plurality of vertical grooves 20 and 20 formed on the inner surface side of the heat insulating plate 2, and the vertical grooves 20 constitute the flow path. The flow path is not limited to such a longitudinal groove. Details of other embodiments will be described later.

Next, the holding member will be described. A handle 12 for improving the workability of carrying the cold insulation container 1 is provided on the outer side of the opposing side surfaces of the exterior sheet 10. Further, when the coupling piece 13 provided on the outer upper edge of the side surface is provided with a hook and loop fastener 14, coupled to a surface fastener 15 has been found provided on the side outer lower edge of the other cold container when stacked stacked In addition to being used for preventing the collapse of the load, when it is placed on the uppermost stage or not stacked, it is connected to surface fasteners (not shown) provided on both side edges of the upper surface of the lid to improve the closure of the lid. The lid also includes a closing piece 16 having a hook and loop fastener for holding the lid in a closed state.

  The holding sheet 11 is formed on each of the bottom surface, each side surface, and the lid of the exterior sheet 10, and the insulating sheet 2 (details are provided for the bottom wall 100, the four side surfaces 101, and the lid portion 102). And is formed in a bottomed box shape having a rectangular shape in plan view having predetermined heat insulation performance and rigidity. In the present embodiment, the holding sheet 11 covers the bottom wall 100, the four side surfaces 101, and the inner surface of the lid portion 102. This holding sheet is provided with a ventilation window 19. Details of the ventilation window 19 will be described later.

  Next, the configuration of the four side surfaces 101 of the cold container 1 will be described. As shown in cross section in FIG. 2, the holding sheet 11 on the side surface is formed so that the upper end opens and closes. Further, a holding piece 18 having a surface fastener is provided inwardly projecting from the upper part of the outer sheet 10, and the upper end of the holding sheet 11 is closed by the holding piece 18 and the surface fastener of the open / close end 17 to hold the outer sheet 10. The heat insulating plate 2 inserted between the sheets 11 is held. The heat insulating plate 2 is taken in and out from the open / close end.

  As shown in FIG. 1, a ventilation window 19 is formed on the inner surface of the holding sheet 11 on the side surface. As shown in FIGS. 2 and 3, the ventilation window 19 is formed at least at the upper part and the lower part of the inner surface of the holding sheet 11, and constitutes the inlet and outlet of the opening part of the circulation means. The position where the upper ventilation window 19 is formed may not be the uppermost end portion of the holding sheet 11, but at least when the cooling object is packed in the cold container, the ventilation window 19 is not hidden by the cold object. It is preferable to form at a position.

  The ventilation window 19 is preferably constituted by a mesh-shaped ventilation member. The mesh-shaped ventilation member may be configured by a cloth or the like provided with a mesh having a degree of roughness that prevents the object to be cooled stored in the cold insulation container 1 from passing therethrough.

  Although the ventilation window 19 of this embodiment is formed in the upper part and the lower part of the holding sheet 11, you may comprise a ventilation window also in positions, such as the center part of the holding sheet 11, and may comprise an outflow port. . Further, the entire inner surface of the holding sheet 11 may be the ventilation window 19 by configuring the holding sheet 11 with a mesh-shaped ventilation member.

  In the illustrated example, the ventilation sheet is provided in the holding sheet 11 only on one side surface among the side surfaces of the cold insulation container 1, but the ventilation window may be provided on all side surfaces, that is, all four side surfaces. Furthermore, a ventilation window may be provided on the bottom surface.

  Next, the configuration of the lid portion 102 of the cold container 1 will be described. As shown in FIG. 2, the lid portion 102 includes an exterior sheet 10 and a holding sheet 11 provided inside the exterior sheet 10, and a hook-and-loop fastener (not shown) provided at the opening end of the holding sheet 11 and the interior of the exterior sheet 10. The opening end of the holding sheet 11 is closed by the holding piece 18 projecting in the direction, and the heat insulating plate 2 is held between the sheets 10 and 11.

The exterior sheet 10 constituting the four side surfaces 101 includes a protruding piece 10 a protruding upward from the upper surface of the heat insulating plate 2 held by the holding sheet 11. The protruding piece 10a protrudes upward by the thickness of the lid portion 102, and the upper ends of the four side surfaces 101 are stepped. The lid 102 is fitted into the stepped portion. A front end side of the exterior sheet 10 is formed on a closing piece 16 having a surface fastener (not shown), and a surface fastener (not shown) provided on the front end side of the exterior sheet 10 and the upper part of the exterior sheet 10 on the four side surfaces 101. Then, the lid 102 is closed.

  Next, the configuration of the bottom wall 100 of the cold container 1 will be described. As shown in FIG. 3, the bottom wall 100 includes an outer holding sheet 110 and an inner holding sheet 111. Both holding sheets 110 and 111 are configured such that one side end side can be opened and closed and can be closed by a surface fastener (not shown), and the heat insulating plate member 2 is taken in and out from the opening and closing ends. The side end opposite to the opening side end is attached to the four side surfaces, and is configured to be foldable by raising both holding sheets 110 and 111 while holding the heat insulating plate 2.

  The exterior sheet 10 is formed of a flexible member, and in addition to the holding sheets 110 and 111 of the bottom wall 100, the left rear side surface and the right front side surface in FIG. Similarly, it is possible to fold the holding sheets on the left back side surface, the right front side surface and the bottom surface by folding the holding sheets and attaching them to the other four side surfaces by sewing or the like.

The bottom wall 100 of the present embodiment includes second circulation means. That is, a ventilation window 19 is formed in the holding sheet 111 on the inner side of the bottom wall 100, that is, on the upper side, as shown in FIG. The ventilation window 19 is formed in the vicinity of at least one of the four side surfaces 101 provided with the circulation means, and constitutes the inlet of the second circulation means. Further, the ventilation window 19 constituting the outlet of the second circulation means is formed in the vicinity of the central portion of the container or the four opposite side surfaces. These ventilation windows communicate with each other through the longitudinal grooves 20 of the heat insulating plate 2 in the bottom wall 100.

  The ventilation window 19 constituting the inflow port is preferably formed at a position close to the four side surfaces 101. The ventilation window 19 is preferably constituted by a mesh-shaped ventilation member. The mesh-shaped ventilation member may be configured by a cloth or the like provided with a mesh having a degree of roughness that prevents the object to be cooled stored in the cold insulation container 1 from passing therethrough.

  Next, another example of the distribution means will be described. First, an example of the longitudinal groove will be described. In FIG. 1, a plurality of vertical grooves extending from one end to the other end of the heat insulating plate 2 are formed, but vertical grooves reaching from the ventilation window 19 constituting the inflow port to the ventilation window 19 constituting the outflow port are formed. Just do it. Further, the entire surface of the vertical groove 20 can be an open portion, but the inlet and outlet are portions facing the ventilation window 19. In FIG. 1, vertical grooves are formed on the entire inner surface of the heat insulating plate 2, but the vertical grooves may be formed on a part of the inner side of the heat insulating plate only on the left side of the inner surface or only in the center. Good.

  The vertical groove 20 may have a wide or narrow width. That is, the width of the longitudinal groove 20 may be gradually increased from the inlet side to the outlet side. By forming the width of the vertical groove 20 wide and narrow, the cold air of the cold insulating agent can easily flow to the outlet side of the vertical groove 20, and the bottom of the cold storage container 1 can be more reliably cooled.

  As another example of the flow path, in addition to the vertical groove, a horizontal groove or a slanted groove is formed on the inner surface of the heat insulating plate material, and cold air flows from the ventilation window 19 forming the inlet to the ventilation window 19 forming the outlet. These grooves may be communicated with each other so as to circulate as a flow passage. In FIG. 1, only the vertical grooves in the direction perpendicular to the bottom surface are shown, but the vertical grooves only need to reach the outlet from the inflow port. Not limited to. That is, the groove may be an oblique groove reaching the outlet from the inlet or a groove reaching the outlet from the inlet by communicating the oblique groove and the lateral groove.

  As still another example of the flow path, a hole having a size not exceeding the plate thickness is formed inside the heat insulating plate 2 to form a flow path, and on the inner surface of the heat insulating plate 2, It is good also as a structure which opens the inflow port used as an open part, and an outflow port.

  Further, the distribution means may be formed by the flow path forming member 21 that is separate from the heat insulating plate 2. FIG. 4 shows a schematic cross-sectional view thereof. In the illustrated example, the flow path forming member 21 is held together with the heat insulating plate member 2 by the holding means, and the flow path forming member 21 forms a flow path and an open portion on four side surfaces.

  The flow passage forming member 21 shown in FIG. 4 is made of a plate material having a mountain-fold fold in a folding screen, and the flow passage is formed by the unevenness of the fold portion. The shape of the flow path forming member is not limited to the folding-like uneven shape shown in FIG. 4, but may also be an uneven shape such as a corrugated plate shape, a saw shape, or a kamaboko shape.

  Another outline of the flow path forming member is shown in FIG. In FIG. 5, the heat insulating plate member 2 is held by the holding means, while a separate flow passage forming member 22 is disposed on the inner surface side of the container to form the flow passage and the open portion. Although the flow path forming member 22 in the illustrated example is formed of an uneven plate material, a folding screen or corrugated plate as described above may be used.

  FIG. 6 shows still another outline of the flow path forming member. The flow path forming member 23 in this example includes a plate body 230 having an open portion 231 that constitutes an inflow / outlet, and a spacer 232 that forms a gap between the plate body 230 and the heat insulating plate material 2.

  The spacer 232 in the example is formed integrally with the plate body 230, and may be held by the holding member together with the heat insulating plate material 2 as shown in FIG. 4, or held by the holding member as shown in FIG. Instead, it may be arranged on the inner surface side of the container. When the flow path forming member 23 is held together with the heat insulating plate member 2 by the holding member, the plate body 230 and the spacer 232 may be separated. Moreover, you may provide a spacer in a heat insulating board | plate material.

  The flow path forming members 21, 22, and 23 shown in FIGS. 4 to 6 can be formed by processing a plastic plate material, an aluminum thin plate material, or the like. Further, the flow path forming members 21 and 22 shown in FIGS. 4 and 5 may be formed by forming a folding screen-like or wave-like unevenness on the inner surface side of a thick plate member such as plastic.

  By disposing the flow path forming member separate from the heat insulating plate material inside the heat insulating plate material, the flow path can be easily formed without processing the heat insulating plate material, and the flow path forming member is used for cooling. The rigidity of the container can be improved.

  A reinforcing member 3 having a U-shaped cross section is attached to the upper ends of the four side surfaces. The reinforcing member 3 is preferably formed of aluminum or the like. The reinforcing member 3 is preferably attached to all of the upper ends of the heat insulating plate 2 on the four side surfaces in which the flow passages are formed. However, sufficient rigidity can be obtained only by attaching to the heat insulating plate material 2 on the four side surfaces which are long sides. be able to.

  In the illustrated example, the reinforcing member 3 is attached to the upper end of the heat insulating plate formed integrally with the distribution means. However, even when the distribution means is formed separately from the heat insulating plate, the upper end of the heat insulating plate or the heat insulation is formed. A reinforcing member may be attached to the upper ends of the conductive plate material and the flow path forming means

  The cold insulation container 1 according to the embodiment of the present invention forms a container by holding the heat insulating plate 2 in a box shape by a holding member made of an exterior sheet 10 and a holding sheet 11, such as foamed polystyrene formed in a box shape, etc. You may form the groove | channel etc. which become a flow path in the inner surface of the side wall of the heat insulating container which consists of, or a bottom wall.

  The operation and effect of the embodiment of the present invention having the above configuration will be described below.

  As shown in FIG. 2, when the cold object A is packed in the cold container 1 and the cold insulation agent B such as dry ice is placed thereon, the cold air of the cold insulation agent B can be obtained even if the cold object A is densely packed. As shown by the arrows in FIG. 2, the air flows from the ventilation window 19 (inflow port) formed in the upper part of the holding sheet 11 into the vertical groove 20 (flow path) formed in the heat insulating plate 2.

  And this cold air distribute | circulates the vertical groove 20, and flows out from the ventilation window 19 (outflow port) formed in the lower part of the holding | maintenance sheet | seat 11, as shown by the arrow in FIG. Cool the cooled object A packed in the bottom.

  As shown in FIG. 3, if the second circulation means composed of the ventilation window 19 and the flow passage 20 is also formed in the bottom wall 100, the cold air that has reached the lower part of the cold insulation container 1 via the four side surfaces 101 can be obtained. Further, it reaches a position away from the four side surfaces 101 through the ventilation window 19 and the flow passage 20.

  As a result, the cold storage container does not incur an increase in costs due to a decrease in work efficiency or an increase in the amount of use of the cold storage agent, by the same work as before in which a cold storage object is packed in a cold storage container and a cold storage agent is placed thereon. The cold air of the cold-retaining agent at the top of the container spreads to the bottom of the container, so that the object to be cooled packed in the cold-insulated container can be kept at a sufficiently low temperature. In addition, since the ventilation window is formed in the holding sheet and the flow path is formed in the heat insulating plate, the accommodation efficiency is not lowered.

  Furthermore, since the flow path of this embodiment is comprised by the groove | channel formed in the inner surface of a heat insulating board | plate material, it can form easily and cheaply.

  Furthermore, since the inner surface of the heat insulating plate material of the present embodiment is covered with the holding cover, the inner surface of the heat insulating plate material is protected so as not to be damaged, and is excellent in durability. Further, when the flow passage is constituted by a vertical groove as in the present embodiment, the holding cover prevents the cold object from clogging in the vertical groove, so that the flow of cold air is not hindered and the cold air is surely contained in the container. Can reach the bottom.

  Furthermore, by forming the ventilation window with mesh, the contents packed in the container can be prevented from entering the flow path from the ventilation window, and the flow path is not blocked by the stored contents, The cold air of the cold insulation agent can surely keep the whole through the flow path.

  Furthermore, by covering the heat insulating plate with two holding sheets and making it foldable, it is formed into a stackable box shape, and can be folded and compact when not in use, with sufficient cooling performance. In addition to accommodating efficiency, it also excels in transportation efficiency.

  Furthermore, by attaching a U-shaped reinforcing member to the upper ends of the four side surfaces, the cold insulation container has a predetermined rigidity that can withstand the use of being stacked, and has a flow passage having a wide enough width for the circulation of cold air. In addition to ensuring that the entire container can be kept cold, it is possible to improve work efficiency and transport efficiency.

  Furthermore, by forming the flow passage and the ventilation window on the bottom wall, the cool air reliably reaches a position far from the four side surfaces of the container bottom, and the entire container can be kept at a sufficiently low temperature.

It is the partially broken perspective view which decomposed | disassembled some cold storage containers which concern on this invention. It is an expanded sectional view of the four side upper part of a cold storage container. It is an expanded sectional view of the four side part lower part of a cold storage container. It is a plane sectional view showing other examples of a flow passage formation member. It is a perspective view which shows another example of a flow path formation member. It is a perspective view which shows another example of a flow path formation member.

DESCRIPTION OF SYMBOLS 1 Cold storage container 10 Exterior sheet | seat 100 Bottom wall 101 Four side surface 102 Cover part 10a Protruding piece 11 Holding sheet 110 Outer holding sheet 111 Inner holding sheet 12 Handle 13 Connecting piece 14, 15 Face fastener 16 Closing piece 17 Opening upper end 18 Holding Piece 19 Ventilation window 2 Thermal insulation plate material 20 Longitudinal groove 21-23 Flow path formation member 230 Plate body 231 Opening part 232 Spacer 3 Reinforcement member A Cooled object B Coolant

Claims (2)

Heat insulation and rigidity are achieved by forming a holding sheet on the bottom, four sides and inside of the lid of the box-shaped outer sheet, and holding a heat insulating plate made of a synthetic resin material between the outer sheet and the holding sheet. Forming a box-shaped container with
A plurality of vertical grooves are formed on the inner surface side of the heat insulating plate material on at least one of the four side surfaces to form a cold air flow path, and ventilation windows formed of mesh are formed on the upper and lower portions of the holding sheet that covers it. A cold insulating container provided by connecting these ventilation windows and the flow passage . The heat insulating plate material on the bottom surface of the box-shaped container forms a plurality of vertical grooves on the upper surface side to form a cold air flow path, and the holding sheet covering it has two or more ventilation windows formed of mesh, 2. The cold insulation container according to claim 1, wherein the ventilation window is connected to the flow passage, and one of the ventilation windows is positioned in the vicinity of the lower ventilation window .

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