JP5115824B2 - Refrigerated container manufacturing method and refrigerated container - Google Patents

Description

  The present invention relates to a method for manufacturing a refrigerated container.

  Conventionally, refrigerated containers are used for handling cargoes that need to be transported at low temperatures. The refrigerated container uses a polystyrene foam or a vacuum heat insulating material as a heat insulating material inside the panel constituting the packing box, thereby suppressing heat conduction from the outside and maintaining the inside of the container at a low temperature. Note that the refrigerated containers include a refrigeration / freezing unit mounting type (for example, see Patent Document 1) and a refrigeration / freezing unit non-mounting type (for example, Patent Document 2).

Japanese Utility Model Publication No. 61-97193 JP 2000-255679 A

  By the way, due to the recent increase in fuel prices and the reduction of carbon dioxide emissions that cause global warming, the demand for containers with excellent handling of cargo using railways and ships has increased, and refrigerated containers The amount of freight transported by the company is also increasing. This invention is made | formed in view of this request | requirement, The place made into the objective is to enable provision of the refrigerated container excellent in the cool keeping performance.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) Highly heat-insulating panels constituting the underframe, roof, side, wife, and door are individually manufactured, and these highly heat-insulating panels are assembled into a box shape together with a skeleton member including columns and beams. A process of attaching a urethane slab that has been cut into a shape that is easy to attach in advance to a space formed in the connecting portion of the heat insulating panel and the skeleton member, and filling urethane foam into a gap that still remains in the mounted state of the urethane slab Of manufacturing a refrigerated container.
The manufacturing method of the refrigerated container described in this section is to manufacture a highly heat-insulating panel constituting the underframe, roof, side, wife, and door by a method suitable for each shape and structure. Ensures heat insulation performance. Then, these highly heat-insulating panels were assembled in a box shape together with the skeleton members including columns and beams, and were cut into shapes that were easy to attach in advance in the spaces formed at the connecting portions of the respective highly heat-insulating panels and skeleton members. Install urethane slab. And the heat insulation in the connection part of each highly heat-insulating panel and frame | skeleton member is ensured by filling foaming urethane into the clearance gap still remaining in the mounting state of a urethane slab.

(2) In the above-mentioned item (1), in the step of individually producing the highly heat-insulating panels, an outer plate, an lining plate, and a vacuum heat insulating material entirely covered with urethane foam in advance are The material is positioned so as to leave a gap with respect to both the inner surface of the outer plate and the outer surface of the inner plate, and urethane foam is placed in the space between the outer plate, the inner plate and the vacuum heat insulating material. Manufacturing method of refrigerated container to be filled .
The manufacturing method of the refrigerated container described in this section uses a vacuum heat insulating material that is entirely covered with urethane foam in advance in the process of manufacturing the heat insulating panels individually, so that the vacuum heat insulating material is being transported or assembled. It is intended to avoid a decrease in the predetermined heat insulation performance of the vacuum heat insulating material due to the damage of the surface material of the vacuum heat insulating material. Also, by positioning the vacuum heat insulating material so as to leave a gap with respect to both the inner side surface of the outer plate and the outer side surface of the lining plate and filling with foamed urethane, the vacuum heat insulating material and the outer plate and the lining plate Urethane foam spreads between them, and the urethane foam and urethane foam covering the entire vacuum insulation material are combined to improve the strength of the highly heat-insulating panel, and even during refrigerated container operation, external impacts and loads The impact from the inside at the time of carrying in / out is attenuate | damped, and the failure | damage of the skin material of a vacuum heat insulating material is avoided.

(3) In the step of individually manufacturing each highly heat-insulating panel in the above item (2), the outer plate is placed on the lower surface plate of the press and the periphery of the outer plate is surrounded by a frame-shaped jig. On the inner surface of the outer plate, a rod-shaped urethane slab that divides a portion surrounded by the frame-shaped jig into a plurality of regions is placed, and the rod-shaped urethane slab is placed over the adjacent regions. The vacuum heat insulating material is placed, and further, a rod-shaped urethane slab that divides the upper surface of each vacuum heat insulating material into two regions is placed, and an lining plate is placed on the rod-shaped urethane slab, A sealed space surrounded by the frame-shaped jig, the outer plate, the rod-shaped urethane slab, the vacuum heat insulating material, and the lining plate is formed, and the frame-shaped jig is provided for each of the plurality of regions. the air vent hole is, to secure the air vent path from said enclosed space, said flop A state sandwiched between the lining plate and the outer plate by the lower platen and the upper platen of the scan machine, the injection hole is provided in the plurality of respective areas in the frame-like jig, the closed space The manufacturing method of the refrigerated container which fills foaming urethane in (claim 1) .

The manufacturing method of the refrigerated container described in this section is the step of individually manufacturing each highly heat-insulating panel, wherein the outer plate is placed on the lower surface plate of a press machine having a lower surface plate and an upper surface plate, A rod-shaped urethane slab is placed on the inner surface of the outer plate to divide the part surrounded by the frame-shaped jig into a plurality of areas, and spans adjacent areas. A vacuum heat insulating material is placed on the rod-shaped urethane slab, a rod-shaped urethane slab that divides the upper surface of the vacuum heat insulating material into two regions is placed, and a liner is placed on the rod-shaped urethane slab. Thus, a sealed space surrounded by the frame-shaped jig, the outer plate, the rod-shaped urethane slab, the vacuum heat insulating material, and the lining plate is formed . The frame-shaped jig is provided with an air vent hole and an injection hole for each of a plurality of regions divided by a rod-shaped urethane slab, and an air vent path from the sealed space is secured by the air vent hole . Then, in a state where the outer plate and the lining plate are sandwiched between the lower surface plate and the upper surface plate of the press machine, the inside of the sealed space is filled with urethane foam from the injection hole of the frame-shaped jig . This increases the filling ratio of urethane foam. At this time, the sealed space is divided into a plurality of regions by a rod-shaped urethane slab, and urethane foam is introduced into each region of the sealed space from the injection hole provided in the frame-shaped jig for each region. Therefore, the divided areas and the injection holes are in a one-to-one relationship, so that the urethane foam filling path is simplified, and the urethane foam is sufficiently distributed in each area of the sealed space.

(4) In the above item (3), before placing the lining plate on a rod-shaped urethane slab, at least the outer corners of the vacuum heat insulating material, the inner surface of the outer plate, and the outer side of the lining plate The manufacturing method of the refrigerated container which arrange | positions a urethane slab between both sides ( Claim 2 ).
In the manufacturing method of the refrigerated container described in this section, the urethane slab is disposed so that at least the outer corner of the vacuum heat insulating material is sandwiched between both the inner side surface of the outer plate and the outer side surface of the lining plate. Thus, at least the outer corner portion of the vacuum heat insulating material is accurately positioned so as to leave an appropriate gap with respect to both the inner surface of the outer plate and the outer surface of the lining plate. In this state, by filling urethane foam into the sealed space surrounded by the frame-shaped jig, outer plate, rod-shaped urethane slab, vacuum heat insulating material and lining plate, the vacuum heat insulating material, outer plate and lining plate Urethane foam spreads between the two, and the urethane foam and urethane foam covering the entire vacuum insulation material are combined to improve the strength of the highly heat-insulating panel. The impact from the inside during loading / unloading of the load is attenuated to avoid damage to the skin material of the vacuum heat insulating material.

(5) In the above items (1) to (4), the urethane slab is attached to all the spaces formed in the connection portions of the high thermal insulation panels and the skeleton member, and the urethane slab is attached. A method for manufacturing a refrigerated container in which the remaining gap is filled with urethane foam ( Claim 3 ).
In the manufacturing method of the refrigerated container described in this section, urethane slabs are installed in all the spaces formed in the connection portions of the respective highly heat-insulating panels and skeletal members, and foamed in the gaps remaining in the urethane slab installation state. Filling with urethane eliminates all the parts where the heat insulation is likely to be impaired due to the structure of the container.

(6) In the above items (1) to (5), the method includes the step of previously forming a step portion extending in parallel with the installation direction of the rod-shaped urethane slab on the outer plate of the highly heat-insulating panel constituting the roof. A method for manufacturing a refrigerated container ( Claim 4 ).
The manufacturing method of the refrigerated container described in this section increases the strength of the outer plate by forming a step portion in advance on the outer plate of the highly heat-insulating panel constituting the roof, and prevents deformation of the outer plate due to thermal expansion. The peeling between the outer plate and the urethane slab or the urethane foam due to the deformation of the outer plate is avoided. Moreover, when the stepped portion extends in parallel with the installation direction of the rod-shaped urethane slab, it is avoided that the rod-shaped urethane slab intersects with the stepped portion, thereby causing a gap between the two.

(7) A refrigerated container manufactured by the manufacturing method according to any one of (1) to (6) above ( claim 5 ).

  Since the present invention is configured as described above, it is possible to provide a refrigerated container having excellent cold insulation performance.

It is process drawing which shows the manufacturing method of the refrigerated container which concerns on embodiment of this invention. It is a front view of the refrigerated container which concerns on embodiment of this invention. (A) is a top view of the refrigerated container shown by FIG. 2, (b) is AA sectional drawing of (a), (c) is BB sectional drawing of (a). The 3rd-position pillar pressing surface of the refrigerated container which concerns on embodiment of this invention is shown partially, (a) is a side view, (b) is DD sectional drawing of (a). 3A is a cross-sectional view taken along the line C-C in FIG. 3A, FIG. 3B is an enlarged view of an E portion in FIG. 3A, FIG. 3C is an enlarged view of an F portion in FIG. FIG. (A) is the arrow H perspective view of Fig.5 (a), (b) is JJ sectional drawing of (a). It is a press used for the manufacturing method of the refrigerated container which concerns on embodiment of this invention. Place a steel body outer plate on the lower surface plate of the press shown in FIG. 7, surround the outer plate with a frame-shaped jig, and bond and fix a rod-shaped urethane slab to the part surrounded by the frame-shaped jig And the state enclosed by the frame-shaped jig | tool is divided into several area | regions. FIG. 9 shows a state in which a vacuum heat insulating material is bonded and fixed on a rod-shaped urethane slab so as to straddle adjacent regions divided by the rod-shaped urethane slab from the state of FIG. 8. FIG. 10 shows a state in which a rod-shaped urethane slab is bonded and fixed at a position where the upper surface of each vacuum heat insulating material is divided into two regions from the state of FIG. 9. FIG. 9 shows a state in which the lining plate is positioned on the rod-shaped urethane slab and bonded and fixed from the state of FIG. 8. 12 shows a state in which the frame-shaped jig is removed from the state of FIG. 11 after the urethane foam is injected.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
The manufacturing method of the refrigerated container 10 (refer FIG. 2, FIG. 3 (a)) which concerns on embodiment of this invention is the high heat insulation which comprises a roof, a base frame, the side, a wife, and a door, as FIG. 1 shows. The refrigerated container 10 is manufactured by individually manufacturing the heat-resistant panels and assembling these highly heat-insulating panels together with the skeleton members including the pillars and beams into a box shape.
Further, as shown in FIGS. 3B and 4, the urethane slab 16 (16 </ b> A) cut into a shape that can be easily attached in advance in the space S formed in the connecting portion between the highly heat-insulating panel 12 and the skeleton member 14. , 16B, 16C, 16D), and injecting the urethane foam 18 into the gap S ′ still remaining with the urethane slab 16 mounted. The specific manufacturing procedure is as shown in steps (1) to (25) of FIG. 1 described below. The main components are the roof 20, the frame 22, the side 24, the side door 26, and the wife 28. Since the door and door 30 have substantially the same structure and manufacturing procedure, the roof door 20 will be described in detail here as an example.

As shown in FIG. 5 and FIG. 6, the roof 20 is constituted by an outer plate 32, a lining plate 34, a urethane slab 16, a urethane foam 18, and a vacuum heat insulating material 36 that is entirely covered with urethane foam 36 a in advance. A beam 38 is fixed to the outer plate 32 by welding. A rod-shaped urethane slab 16E is disposed between the vacuum heat insulating material 36 and both the inner side surface of the outer plate 32 and the outer side surface of the lining plate 34. The urethane slab 16F is also disposed between the outer edge of the vacuum heat insulating material 36, in particular, the corner, and both the inner surface of the outer plate 32 and the outer surface of the lining plate 34.
In the example of FIG. 5C, the beam 38 has a hat shape in cross section, and the urethane slab 16F has a shape that closely adheres to the shape of the beam 38 and the vacuum heat insulating material 36. The heat insulating material 36 is tightly fixed to a part of the end portion. The urethane slab 16F may be integrally formed so as to straddle the upper and lower surfaces of the vacuum heat insulating material 36 as in the illustrated example, or may be a combination of a plurality of urethane slabs. Furthermore, like the rod-shaped urethane slab 16E, the vacuum heat insulating material 36 may be disposed completely on the upper and lower surfaces. Further, a rod-shaped urethane slab 16G is fitted so as to fill the inside of the hat-shaped cross-sectional shape of the beam 38. The space between the outer plate 32 and the lining plate 34 other than the urethane slabs 16, the vacuum heat insulating material 36 and the beams 38 is filled with the urethane foam 18. Hereinafter, the highly heat-insulating panel before completion is expressed as “steel body”, and each step shown in FIG. 1 will be described.

(1) Roof manufacturing process (1) -1 Roof assembly The press 100 shown in FIG. 7 is used. The press machine 100 includes a lower surface plate 102 and an upper surface plate 104, and the lower surface plate 102 can move laterally outside the press machine 100 in order to facilitate placement of the outer plate 32. There is a fixed position in the vertical direction. On the other hand, the upper surface plate 104 can move up and down with respect to the lower surface plate 102. As shown in FIG. 8, a steel body outer plate 32 is placed on the press machine 100 so as to be in close contact with the lower surface plate 102 of the press machine 100, and the periphery of the outer plate 32 is frame-shaped jig 42. Surround with. As shown in FIGS. 3A and 3C, a stepped portion 32a extending in parallel with the installation direction of the rod-shaped urethane slab 16E shown in FIGS. 5 and 6 is formed on the outer plate 32 in advance. It is desirable to keep it.

(1) -2 Urethane slab attachment Subsequently, the rod-shaped urethane slab 16E is bonded and fixed to the portion surrounded by the frame-shaped jig 42, and the portion surrounded by the frame-shaped jig 42 is divided into a plurality of regions.
The frame-shaped jig 42 functions as a mold for determining the injection range of the urethane foam 18 injected in a later process by closing the periphery of the steel body . In addition, the frame-shaped jig 42 is provided with a plurality of injection holes and air vent holes for injecting the urethane foam 18. The injection hole and the air vent hole are provided for each divided region.
(1) -3 Vacuum Insulation Material Attachment Vacuum insulation as shown in FIG. 9 on the rod-shaped urethane slab 16E so as to straddle the adjacent area divided by the urethane slab 16 on the inner surface of the outer plate 32. The material 36 is placed, and the rod-shaped urethane slab 16E and the vacuum heat insulating material 36 are bonded. At this time, the urethane slab 16F is bonded and fixed so as to be in close contact with the beam 38 and the vacuum heat insulating material 36. Further, the rod-shaped urethane slab 16G is fitted inside the hat-shaped cross-sectional shape of the beam 38 and fixed by adhesion.

(1) -4 Urethane Slab Attaching Subsequently, as shown in FIG. 10, the upper surface of each vacuum heat insulating material 36 is divided into two regions, and a rod-like urethane slab 16E is placed and bonded together. Fix it. Note that the urethane slab 16E, bonded and fixed to the outer surface of the pre-lining plate 34, during installation of the lining plate 34 shown in FIG. 11, bonded and fixed to the upper surface of the urethane slab 16E and vacuum insulation material 36 It is also good.
(1) -5 Urethane injection foaming The lining plate 34 is positioned using the frame-shaped jig 42, and the lining plate 34 is placed on the rod-like urethane slab 16E as shown in FIG. A sealed space surrounded by the frame-shaped jig 42, the outer plate 32, the rod-shaped urethane slab 16E, the vacuum heat insulating material 36, and the lining plate 34 is formed.
Then, in a state where the steel body is sandwiched between the lower surface plate 102 and the upper surface plate 104 and the pressure is applied, the urethane foam 18 is injected into the sealed space from each injection hole of the frame-shaped jig 42. After solidifying the urethane foam 18, the upper surface plate 104 is raised, the frame-shaped jig 42 is removed (see FIG. 12), and the roof 20 completed as a highly heat-insulating panel is carried out from the lower surface plate 102.

(2) Manufacturing process of the frame (3) Manufacturing process on the side (4) Manufacturing process of the side door The manufacturing process of the frame, the side and the side door are all the same as the manufacturing process (1) of the roof described above. Therefore, the description is omitted.

(5) Manufacturing process of side frame part A steel frame is combined and welded, and a side frame part is manufactured.
(6) Wife manufacturing process (7) Wife door manufacturing process The wife and wife door manufacturing processes are the same as the roof, underframe, side and side door manufacturing processes (1) to (4) described above. Since there is, explanation is omitted.
(8) Manufacture process of end frame part It welds combining a steel material similarly to a side frame part, and manufactures a end frame part.

(9) Attach the side frame to the side door.
(10) Attach the side to the underframe.
(11) A side door and a side frame are attached to the underframe.
(12) Attach the wife to the underframe.
(13) A wife frame is attached to the wife.
(14) A wife door is attached to the wife frame.
(15) Install the roof.
(16) Paint the necessary parts.
(17) A urethane slab cut into a shape that can be easily attached in advance is pasted on the space S of the column portion (see 16A, 16B, 16C, and 16D in FIGS. 3 and 4).
(18) The foamed urethane 18 is filled into the space S ′ (see FIGS. 3 and 4) of the upper beam / column part by hand.
(19) The urethane foam 18 is manually filled into the space S ′ (see FIGS. 3 and 4) of the side and lower end portions.
(20) it will install the pressing surface-entrance Mall.
(21) Affix the notation.
(22) Attach rubber to necessary parts.
(23) Perform inspection.
(24) Carry out shipping and maintenance.
(25) Completion. Make a shipment.

According to the embodiment of the present invention configured as described above, the following operational effects can be obtained.
The manufacturing method of the refrigerated container 10 which concerns on embodiment of this invention is the process (process (1)-(4), (4) which manufactures the highly heat-insulating panel which comprises a roof, a base frame, the side, a wife, and a door separately. In 6) and (7)), the surface material of the vacuum heat insulating material 36 is transferred during the assembly of the vacuum heat insulating material 36 or during the assembly process by using the vacuum heat insulating material 36 that is entirely covered with the urethane foam 36a in advance. The deterioration of the predetermined heat insulation performance of the vacuum heat insulating material 36 due to breakage can be avoided. Moreover, the vacuum heat insulating material 36 and the outer plate 32 are filled by positioning the vacuum heat insulating material 36 so as to leave a gap with respect to both the inner surface of the outer plate 32 and the outer surface of the lining plate 34 and filling the urethane foam 18. Further, the urethane foam 18 spreads between the lining plate 34 and the urethane foam 36a covering the entire vacuum heat insulating material 36 and the foamed urethane 18 are bonded to improve the strength of the high heat insulating panel 12, and the refrigerated container. Even during operation, the impact from the outside and the impact from the inside during loading / unloading of the load can be attenuated to prevent the skin material of the vacuum heat insulating material 36 from being damaged.

  Also, each highly heat-insulating panel is assembled in a box shape together with a skeleton member including columns and beams (steps (9) to (15)), and a space S ( 3 and FIG. 4), a urethane slab 16 cut into a shape that can be easily attached in advance is mounted (step (17)). Then, the urethane foam 18 is filled in the gap S ′ (see FIGS. 3 and 4) that remains in the state in which the urethane slab 16 is mounted (steps (18) and (19)), so that each highly heat-insulating panel and skeleton is filled. The heat insulation in the connection part of a member is securable.

Moreover, the manufacturing method of the refrigerated container which concerns on embodiment of this invention is a press machine in the process (process (1)-(4), (6), (7)) which manufactures each high heat insulation panel separately. The outer plate 32 is placed on the lower surface plate 102 of FIG. 100 (FIG. 7), the periphery of the outer plate 32 constituting each highly heat-insulating panel is surrounded by a frame-shaped jig 42, A rod-shaped urethane slab 16E that divides the portion surrounded by the jig 42 into a plurality of regions is placed (FIG. 8), and the vacuum heat insulating material 36 is placed on the rod-shaped urethane slab 16E so as to straddle adjacent regions. The rod-shaped urethane slab 16E that divides the upper surface of each vacuum heat insulating material 36 into two regions is mounted (FIG. 10), and the lining plate 34 is placed on the rod-shaped urethane slab 16E. Place (Fig. 11), frame-shaped jig 42, outer plate 32, and rod-shaped urethane. To form a sealed space surrounded by the blanking 16E and the vacuum heat insulating material 36 and the lining plate 34, the air vent path from the enclosed space to secure the vent hole of the frame jig 42, the lower platen 102 of the press 100 In a state where the outer plate 32 and the lining plate 34 are sandwiched between the upper surface plate 104 and the upper surface plate 104, the urethane foam 18 is filled into the sealed space from the injection hole of the frame-shaped jig 42 , whereby the sealed space is introduced into the sealed space. The filling rate of the urethane foam 18 is increased. At this time, the sealed space is divided into a plurality of regions by a rod-shaped urethane slab 16E, and further, from each injection hole provided in the frame-like jig 42 to each region of the sealed space. Since the foamed urethane 18 is filled, the divided areas and the injection holes are in a one-to-one relationship, the filling path of the foamed urethane 18 is simplified, and the foamed urethane 18 is sufficiently placed in each area of the sealed space. It will be prevalent. Further, the frame-shaped jig 42 can accurately position the outer plate 32 and the lining plate 34. In addition, the frame-shaped jig | tool 42 is suitably comprised in the shape which can closely_contact | adhere to the external shape of each highly heat-insulating panel.

  In the embodiment of the present invention, the urethane slab 16F is disposed so that at least the outer corner of the vacuum heat insulating material 36 is sandwiched between both the inner surface of the outer plate 32 and the outer surface of the lining plate 34. By doing so, at least the outer corner portion of the vacuum heat insulating material 36 can also be accurately positioned so as to leave an appropriate gap with respect to both the inner surface of the outer plate 32 and the outer surface of the lining plate 34. Then, by filling the sealed space surrounded by the frame-shaped jig 42, the outer plate 32, the rod-shaped urethane slab 16G, the vacuum heat insulating material 36, and the lining plate with urethane foam, the vacuum heat insulating material, the outer plate, and the inner plate The urethane foam will be sufficiently distributed between the tension plate. As shown in FIGS. 5 and 6, the urethane slab 16F has a shape that closely adheres to the shape of the beam 38 and the vacuum heat insulating material 36, but at the end of the beam 38 and the vacuum heat insulating material 36. Since it is fixed to a part, the urethane foam filling path into the sealed space is not blocked by the urethane slab 16F.

In addition, the urethane slab 16 is attached to all the spaces S formed in the connecting portions of the respective highly heat-insulating panels and the skeleton members, and the urethane foam is filled into the gap S ′ that remains in the state in which the urethane slab 16 is attached. Thus, all the portions where the heat insulation is likely to be impaired due to the structure of the container can be eliminated, and the refrigerated container 10 can be provided with high heat insulation.
Further, by forming the step portion 32a in advance on the outer plate 32 of the highly heat-insulating panel 12 constituting the roof 20, the strength of the outer plate 32 is increased and the deformation of the outer plate 32 due to thermal expansion is prevented. Therefore, peeling between the outer plate 32 and the urethane slab 16 or the urethane foam 18 due to the deformation of the outer plate 32 can be avoided. In addition, since the stepped portion 32a extends in parallel with the installation direction of the rod-shaped urethane slab 16E, it is possible to avoid a gap between the rod-shaped urethane slab 16E and the stepped portion 32a.
Therefore, the refrigerated container 10 according to the embodiment of the present invention manufactured by the above manufacturing procedure has excellent cold insulation performance. In the embodiment of the present invention, a refrigerated container not equipped with a refrigeration / refrigeration unit has been described as an example. However, it is understood that the present invention can also be applied to a refrigerated container equipped with a refrigeration / refrigeration unit. It will be.

  10: Refrigerated container, 12: High thermal insulation panel, 14: Framework member, 16: Urethane slab, 18: Urethane foam, 20: Roof, 22: Underframe, 24: Side, 26: Side door, 28: Wife, 30 : Tsum door, 32: Outer plate, 32a: Stepped portion, 34: Lined plate, 36: Vacuum heat insulating material, 36a: Urethane foam, 38: Beam, 42: Frame-shaped jig, S, S ': Space

Claims (5)

Highly heat-insulating panels constituting the underframe, roof, side, wife, and door are individually manufactured, and these highly heat-insulating panels are assembled into a box shape together with a skeleton member including columns and beams. And mounting a urethane slab that has been cut into a shape that is easy to attach in advance in the space formed in the connecting portion of the skeleton member, and filling the foamed urethane into the gap that still remains in the mounted state of the urethane slab,
In the step of individually manufacturing the highly heat-insulating panel, an outer plate, an lining plate, and a vacuum heat insulating material entirely covered with urethane foam in advance, the vacuum heat insulating material is used as an inner surface and an inner surface of the outer plate. positioned so airspace to both the outer surface of the clad plate, the space between the outer plate and the lining plate and the vacuum insulation material, filled with urethane foam, this time, of the press Shitajo The outer plate is placed on a board, the periphery of the outer plate is surrounded by a frame-shaped jig, and the inner surface of the outer plate is divided into a plurality of areas surrounded by the frame-shaped jig. Place the vacuum slab on the rod-shaped urethane slab so that the urethane slab is placed over the adjacent areas, and further divide the upper surface of each vacuum insulation material into two areas Place the slab and place the lining plate on the rod-shaped urethane slab A sealed space surrounded by the frame-shaped jig, the outer plate, the rod-shaped urethane slab, the vacuum heat insulating material, and the lining plate is formed, and the frame-shaped jig is provided for each of the plurality of regions. The frame-shaped jig in a state in which an air vent path from the sealed space is secured by the air vent hole and the outer plate and the inner plate are sandwiched between the lower surface plate and the upper surface plate of the press machine. A method for manufacturing a refrigerated container , wherein urethane foam is filled into the sealed space from an injection hole provided in each of the plurality of regions . Before placing the lining plate on the rod-shaped urethane slab, the urethane slab is placed between at least the outer corner of the vacuum heat insulating material and both the inner surface of the outer plate and the outer surface of the lining plate. The manufacturing method of the refrigerated container of Claim 1 characterized by the above-mentioned. The urethane slab is attached to all the spaces formed in the connecting portions of the respective highly heat-insulating panels and the skeleton member, and the urethane foam is filled into the gaps that remain in the attached state of the urethane slab. The manufacturing method of the refrigerated container of Claim 1 or 2 . 4. The method according to claim 1 , further comprising a step of previously forming a stepped portion extending in parallel with an installation direction of the rod-shaped urethane slab on the outer plate of the highly heat-insulating panel constituting the roof. The manufacturing method of the refrigerated container of description. The refrigerated container manufactured by the manufacturing method of any one of Claim 1 to 4 .

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