Refrigerated vehicle

Abstract

To provide a refrigerator vehicle which can make a refrigerator vehicle panel thinner in a thickness, and has a heat insulation panel having excellent rigidity which can withstand an external force.SOLUTION: A lining panel 160 of a refrigerator vehicle has an inner plate 161 arranged inside, a first heat insulation material 162 arranged outside the inner plate 161, and a second heat insulation material 163 sandwiching the first heat insulation material 162 together with the inner plate 161. A third heat insulation material 170 is arranged in a sidewall clearance S1 which is formed between the second heat insulation material 163 and an outer plate 111, the first heat insulation material 162 is a vacuum heat insulation material, and the second heat insulation material 163 and the third heat insulation material 170 are extrusion-type polystyrene forms. A resin-made joint joiner 180 whose cross section shape extending in a vertical direction is an I-type is arranged at an abutment face 160t of an end part of the adjoining lining panel 160 in a width direction.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a refrigerated vehicle. [Background technology]

[0002] Technologies relating to insulating panels used in refrigerated vehicles are disclosed, for example, in Japanese Patent Application Laid-Open No. 10-114245 (Patent Document 1), Japanese Patent Application Laid-Open No. 11-264497 (Patent Document 2), Japanese Patent Application Laid-Open No. 2002-267344 (Patent Document 3), and Japanese Patent Application Laid-Open No. 2005-188714 (Patent Document 4). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-114245 [Patent Document 2] Japanese Patent Application Publication No. 11-264497 [Patent Document 3] JP 2002-267344 A [Patent Document 4] JP 2005-188714 A Summary of the Invention [Problem to be solved by the invention]

[0004] The insulation panels for refrigerated vehicles disclosed in the above-mentioned patent documents contain a vacuum insulation material having high thermal insulation properties. By containing the vacuum insulation material, the insulation panel can be made thin. By making the insulation panel thin, the loading efficiency of the refrigerated vehicle can be improved.

[0005] On the other hand, by making the insulation panel thin, the strength of the panel for the refrigerated vehicle is insufficient against external forces such as lashing of cargo or vibrations during operation of the refrigerated vehicle, which causes deformation of the insulation panel and damage to the vacuum insulation material inside, resulting in a problem of reduced cooling capacity.

[0006] An object of the present invention is to provide a refrigerated vehicle equipped with a heat insulating panel that allows the panel to be made thinner and has excellent strength capable of withstanding external forces. [Means for solving the problem]

[0007] The refrigerated vehicle according to the present disclosure is a refrigerated vehicle having a refrigerated space, and the refrigerated space is defined by side insulation panels arranged on the left and right sides of the refrigerated vehicle, a top insulation panel arranged on the top side, a floor insulation panel arranged on the floor side, a front insulation panel arranged on the front side, and a rear insulation panel arranged on the rear side.

[0008] The side insulation panel includes an outer plate arranged on the outside from the front to the rear of the refrigerated vehicle, a plurality of vertically extending pillar members fixed to the inner surface of the outer plate and arranged at predetermined intervals along the front to rear of the refrigerated vehicle, and a plurality of interior lining panels arranged along the front to rear of the refrigerated vehicle and fixed to the pillar members.

[0009] The lining panel has an inner plate arranged on the inside, a first insulating material arranged on the outside of the inner plate, and a second insulating material that sandwiches the first insulating material together with the inner plate, and a third insulating material is disposed in the side wall gap generated between the second insulating material and the outer plate, the first insulating material is a vacuum insulating material, and the second insulating material and the third insulating material are extruded polystyrene foam. A resin joint joiner having an I-shaped cross section extending in the vertical direction is disposed on the butting surfaces of the ends in the width direction of adjacent lining panels.

[0010] In another embodiment of the refrigerated vehicle, the second insulating material is provided with a recess into which the first insulating material is fitted.

[0011] In another form of the refrigerated vehicle, the floor insulation panel includes a plurality of beam members arranged at predetermined intervals from the front to the rear of the refrigerated vehicle on the refrigerated vehicle floor surface, extending in the left-right direction, a floor structural material arranged on the plurality of beam members, a floor surface material arranged on the floor structural material, and a floor insulation panel member arranged in the floor gap generated between the refrigerated vehicle floor surface and the floor structural material between adjacent beam members.

[0012] The floor insulation panel member has a fourth insulation material arranged on the floor structural material side and a fifth insulation material arranged on the refrigerated vehicle floor side, the fourth insulation material being a vacuum insulation material and the fifth insulation material being an extruded polystyrene foam. Effect of the Invention

[0013] According to the present disclosure, it is possible to make panels for refrigerated cars thinner and to realize refrigerated cars equipped with insulating panels having excellent strength capable of withstanding external forces. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of a refrigerated vehicle according to an embodiment. [Diagram 2] 1 is a schematic diagram of a refrigerated space of a refrigerated vehicle according to an embodiment of the present invention, viewed from the rear to the front. [Diagram 3] 1 is a schematic diagram showing the structure of a side insulation panel according to an embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional perspective view taken along line IV-IV in FIG. [Diagram 5] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 6] 1 is an exploded perspective view showing the structure of an interior panel according to an embodiment of the present invention; [Figure 7] FIG. 2 is an exploded perspective view showing the structure of a first modified example of an interior panel according to an embodiment of the present invention. [Figure 8] FIG. 11 is an exploded perspective view showing the structure of a second modified example of an interior panel according to an embodiment of the present invention. [Figure 9] FIG. 11 is an exploded perspective view showing the structure of a modified example 3 of the interior panel of the embodiment. [Figure 10] FIG. 2 is a cross-sectional view showing the structure of a floor insulation panel according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The refrigerator truck 1 in this embodiment will be described below with reference to the drawings. In the embodiment described below, when numbers, amounts, etc. are mentioned, the scope of the present invention is not necessarily limited to those numbers, amounts, etc., unless otherwise specified. The same reference numbers are used for the same parts and corresponding parts, and duplicate descriptions may not be repeated. The drawings are not illustrated according to the actual dimensional ratio, and in some places, the ratio and number of parts are changed to clarify the structure in order to make it easier to understand the structure.

[0016] The X direction shown in the drawing corresponds to the front-rear direction of the refrigerated vehicle 1, the Y direction corresponds to the up-down direction of the refrigerated vehicle 1, and the Z direction corresponds to the left-right direction of the refrigerated vehicle 1. In the following explanation, parallel includes parallel, which means that the mutual spacing is the same regardless of the position, and in this embodiment, the word parallel is used as a looser meaning that the spacing may be slightly different in some places than this parallel meaning.

[0017] [Embodiment 1] <Refrigerated Truck 1> A schematic configuration of a refrigerated vehicle 1 of this embodiment will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram of the refrigerated vehicle 1, and Figure 2 is a schematic diagram of the refrigerated space CA of the refrigerated vehicle 1 viewed from the rear to the front.

[0018] The refrigerated vehicle 1 has a refrigerated space CA, which is defined by side insulation panels 110 arranged on the left and right sides (Z direction in the figure) of the refrigerated vehicle 1, a top insulation panel 120 arranged on the top side, a floor insulation panel 130 arranged on the floor, a front insulation panel 140 arranged on the front side, and a rear insulation panel 150 arranged on the rear side. The insulation panels are connected to each other using known metal fittings or the like so as not to affect the refrigeration performance.

[0019] The rear insulation panel 150 can be opened and closed in the form of double doors to load cargo. The side insulation panel 110 may also be provided with doors for loading cargo, but these are not shown here. A ventilation window 140A for cooling and air conditioning is provided in a portion of the front insulation panel 140 near the center and the top surface.

[0020] <Side insulation panel 110> The configuration of the side surface insulation panel 110 will be described with reference to Fig. 3 to Fig. 6. Fig. 3 is a schematic diagram showing the structure of the side surface insulation panel 110, Fig. 4 is a cross-sectional perspective view taken along line IV-IV in Fig. 3, Fig. 5 is a cross-sectional view taken along line IV-IV in Fig. 3, and Fig. 6 is an exploded perspective view showing the structure of the lining panel.

[0021] The configurations of the top insulation panel 120, rear insulation panel 150, front insulation panel 140 and rear insulation panel 150 are the same as those of the side insulation panel 110, so a description thereof will be omitted here.

[0022] The side insulation panel 110 includes an outer plate 111 arranged on the outside toward the front and rear of the refrigerated vehicle 1 (X direction in the figure), a plurality of pillar members 112 fixed to the inner surface of the outer plate 111 with screws, adhesive, etc. and arranged at predetermined intervals along the front and rear of the refrigerated vehicle 1, extending in the vertical direction (Y direction in the figure), and a plurality of lining panels 160 arranged along the front to rear of the refrigerated vehicle 1 and fixed to the pillar members 112 with screws B1. The plurality of pillar members 112 form the framework of the side insulation panel 110 and increase the rigidity of the side insulation panel 110.

[0023] The outer plate 111 is a rectangular flat plate extending in the front-rear direction. The long side of the outer plate 111 in the X direction is about 6300 [mm] to about 6500 [mm]. In this embodiment, the long side of the outer plate 111 is about 6466 [mm], for example. The short side of the outer plate 111 in the Y direction (Y direction in the figure) is about 2300 [mm] to about 2500 [mm]. In this embodiment, the short side of the outer plate 111 is about 2464 [mm], for example.

[0024] The outer plate 111 is made of an aluminum plate or an FRP (Fiber Reinforced Plastics) plate. In the case of an aluminum plate, the thickness of the outer plate 111 is about 0.9 mm to about 1.1 mm. In the case of using an aluminum plate in this embodiment, the thickness of the outer plate 111 is, for example, about 1.0 mm.

[0025] When the outer plate 111 is made of an FRP plate, the thickness of the outer plate 111 is about 1.4 mm to about 1.6 mm. When the FRP plate in this embodiment is used, the thickness of the outer plate 111 is, for example, about 1.5 mm.

[0026] The pillar members 112 are hat-shaped aluminum or steel members. They are about 35 mm high and about 74 mm wide at their widest point. The pillar members 112 extend in the vertical direction and are arranged at a pitch of about 450 mm along the X direction.

[0027] The interior panel 160 is made up of an inner plate 161 disposed on the inside, a first insulating material 162 disposed on the outside of the inner plate 161, and a second insulating material 162 sandwiching the first insulating material 162 between the inner plate 161 and the first insulating material 162. The inner plate 161 is made of plywood having a thickness of about 6 mm. The first insulating material 162 is preferably a vacuum insulating material having a thickness of about 8 mm to 10 mm. The second insulating material 163 is made of a resin insulating material, for example, extruded polystyrene foam (XPS) having a thickness of about 20 mm.

[0028] The vacuum insulation material is preferably U-Vacua (registered trademark) manufactured by Panasonic Corporation. The thermal conductivity of the vacuum insulation material is, for example, 0.0025 [W / (m·K)]. This has approximately 3.2 times the thermal insulation performance of the vacuum insulation material used in Prior Art Documents 2 and 3. The thermal conductivity of the vacuum insulation material may be 0.0025 [W / (m·K)] or less.

[0029] The surface of the second insulating material 163 is provided with four recesses 163h for embedding, arranged in two rows and two columns. Four sheets of the first insulating material 162 are arranged parallel to each other in the recesses 163h. Each of the first insulating materials 162 is fixed to the second insulating material 163 in the recesses 163h using an adhesive or the like. Furthermore, the inner plate 161 is fixed to the first insulating material 162 and the second insulating material 163 using an adhesive or the like. When fixing, pressure is applied after the adhesive is applied. This allows the mutual components to be firmly fixed. The interior panel 160 is treated as a single panel member.

[0030] The width of the interior panel 160 in the X direction is about 900 [mm], and the height in the Y direction in the figure is about 2000 [mm]. A plurality of such interior panels 160 are arranged along the X direction (see FIG. 2).

[0031] The pillar member 112 passes through the widthwise center of the lining panel 160, and both ends of the lining panel 160 are fixed to the flanges 112f of the pillar member 112 with screws B1. A resin joint joiner 180 with an I-shaped cross section extending in the Y direction is disposed on the butting surfaces 160t of the widthwise ends of adjacent lining panels 160.

[0032] A third insulating material 170 is disposed so as to fill the side wall gap S1 occurring between the second insulating material 163 of the interior panel 160 and the outer plate 111. For the third insulating material, a plate-shaped extruded polystyrene foam (XPS) may be used, or a hard urethane foam may be sprayed by a spraying method.

[0033] (Modification of Arrangement of First Insulating Material 162) Other arrangements of the first insulating material 162 will be described with reference to Figures 7 to 9. Figures 7 to 8 are exploded perspective views showing the structures of Modifications 1 to 3 of the lining panel 160.

[0034] In the above embodiment, four first insulating materials 162 embedded between the inner plate 161 and the second insulating material 163 and arranged in two rows and two columns are used as one set of insulating structures, but the arrangement is not limited to this. As shown in FIG. 7, one first insulating material 162 may be embedded in the lining panel 160. As shown in FIG. 8, two first insulating materials 162 long in the Y direction and arranged along the X direction may be embedded in the lining panel 160. As shown in FIG. 9, two first insulating materials 162 long in the X direction and arranged along the Y direction may be embedded in the lining panel 160. In this way, the number and arrangement of the first insulating materials 162 included in one set of insulating structures can be appropriately changed depending on the cold insulation performance required of the lining panel 160.

[0035] (Floor insulation panel 130) The configuration of the floor surface insulation panel 130 will be described with reference to Fig. 10. Fig. 10 is a cross-sectional view showing the structure of the floor surface insulation panel 130. This cross-sectional view shows the cross-sectional structure as seen along the X direction.

[0036] The refrigerated vehicle floor surface 200 of the refrigerated vehicle 1 includes a C-channel steel 210 and a steel plate 220. The C-channel steel 210 is arranged at a predetermined pitch along the front-rear direction, which is the X direction.

[0037] The floor insulation panel 130 is arranged at predetermined intervals on the refrigerated vehicle floor 200 from the front to the rear in the X direction of the refrigerated vehicle 1, and includes beam members 211 extending in the width direction in the Z direction, a floor structural member 212 arranged on the multiple beam members 211, a floor surface member 213 arranged on the floor structural member 212, and a floor insulation panel member 230 arranged in the floor gap S2 generated between the refrigerated vehicle floor 200 between adjacent beam members 211 and the floor structural member 212.

[0038] The beam members 211 are for providing the floor gap S2, and in this embodiment, square timbers with a height of about 60 [mm] are used. The width of the square timber is about 50 [mm] to 70 [mm]. The floor surface member 213 is an aluminum plate with a thickness of 2.5 [mm]. The arrangement pitch of the square timbers is about 390 [mm] to 410 [mm].

[0039] The floor structure 212 is made of multiple plywood boards 212a with a thickness of about 12 mm. The plywood boards 212a are long and narrow in the Z direction. When viewed from the luggage compartment in Fig. 2, the plywood boards 212a are arranged so as to be laid out from the front to the rear. The ends of the plywood boards 212a are provided with projections and recesses for connecting adjacent plywood boards 212a.

[0040] The floor insulation panel member 230 has a fourth insulation material 231 arranged on the floor structural material 212 side and a fifth insulation material 232 arranged on the refrigerated vehicle floor surface 200 side. The fourth insulation material 231 is preferably a vacuum insulation material having a thickness of about 8 [mm] to 10 [mm]. The size of the vacuum insulation material is a rectangular shape of about 340 [mm] × 720 [mm]. The fifth insulation material 232 is preferably a resin insulation material, for example, an extruded polystyrene foam (XPS) having a thickness of about 50 [mm]. The size of the extruded polystyrene foam (XPS) is a size that fills the floor gap S2. The fourth insulation material 231 and the fifth insulation material 232 are fixed in the floor gap S2 using an adhesive. In the floor gap S2, the fourth insulation material 231 (vacuum insulation material) is arranged so as to provide a gap S3 between it and the beam member 211, and the fifth insulation material 232 (extruded polystyrene foam) is arranged so as to contact the beam member 211.

[0041] The vacuum insulation material is preferably U-Vacua (registered trademark) manufactured by Panasonic Corporation. The thermal conductivity of the vacuum insulation material is, for example, 0.0025 [W / (m·K)]. This has approximately 3.2 times the thermal insulation performance of the vacuum insulation material used in Prior Art Documents 2 and 3. The thermal conductivity of the vacuum insulation material may be less than 0.0025 [W / (m·K)].

[0042] (Action and effect) In the present embodiment, the refrigerated vehicle 1 has an interior panel 160 which has an inner panel 161 arranged on the inside, a first insulating material 162 arranged on the outside of the inner panel 161, and a second insulating material 163 which sandwiches the first insulating material 162 together with the inner panel 161, and a third insulating material 170 is arranged in the side wall gap S1 which occurs between the second insulating material 163 and the outer panel 111, the first insulating material 162 being a vacuum insulating material, and the second insulating material 163 and the third insulating material 170 being extruded polystyrene foam.

[0043] By adopting this configuration, in the side insulation panel 110, a vacuum insulation material with high cooling effect is placed in a position close to the cold storage space, and double second insulation material 163 and third insulation material 170 are arranged between the vacuum insulation material and the outside, thereby effectively suppressing the flow of heat from the outside into the cold storage space.

[0044] Furthermore, since the interior panel 160 can be handled as a single panel member, the workability when installing the interior panel 160 on the pillar member 112 can be improved. By adopting a framework system in which the pillar members 112 are arranged at a predetermined pitch, the rigidity of the side insulation panel 110 can be improved.

[0045] The floor insulation panel 130 also has a double structure of vacuum insulation material, which has a high cooling effect, and extruded polystyrene foam, and the synergistic effect with the side insulation panel 110 effectively prevents heat from entering the cooling space from the outside.

[0046] Here, the change in temperature inside the refrigerated space (inside the compartment) was measured in the refrigerated vehicle 1 of this embodiment. With reference to Fig. 1, the experiment was carried out on the temperature change at the rear door center position P1 and the interior center position P2.

[0047] For comparison, a refrigerated vehicle (hereinafter referred to as the comparative refrigerated vehicle) was prepared in which 75 mm of urethane foam was used for the side insulation panel 110. The total thickness of the side insulation panel 110 was 82 mm. On the other hand, the present embodiment (hereinafter referred to as the developed refrigerated vehicle) has a double structure of the above-mentioned vacuum insulation material and extruded polystyrene foam, and the total thickness of the side insulation panel 110 is 62 mm.

[0048] The comparison refrigerated vehicle and the developed refrigerated vehicle are the same type of vehicle, and the specifications of both vehicles are: vehicle type "4t refrigerated freezer truck", total vehicle weight "less than 8,000kg", horsepower "210ps", vehicle dimensions "8600[mm] x 2490[mm] x 3350[mm]". Additionally, the refrigeration unit of the comparison refrigerated vehicle is "DENSO: packaged type EP7 type 6550W (5420kcal / h)", and the refrigeration unit of the developed refrigerated vehicle is "DENSO: packaged type P4 type 5000W (4300kcal / h)".

[0049] The measurement results of temperature change showed that at the rear door center position P1, the inside temperature after one hour at 30°C was approximately 6°C for the comparison refrigerated vehicle, while it was approximately 2°C for the developed refrigerated vehicle. Similarly, at the center position P2, the inside temperature after one hour at 30°C was approximately 2°C for the comparison refrigerated vehicle, while it was approximately -2°C for the developed refrigerated vehicle.

[0050] In this way, it was confirmed that the developed refrigerated vehicle has a higher cooling capacity. Also, as described above, the developed refrigerated vehicle can have a thinner total thickness of the side insulation panel 110 than the comparative refrigerated vehicle. This increases the cooling space of the refrigerated vehicle 1 and improves the loading efficiency of luggage. Furthermore, the side insulation panel 110 having the above-mentioned vacuum insulation material has a high cooling capacity. This improves the transportation efficiency of the refrigerated vehicle 1, and is expected to alleviate the driver shortage and improve the working environment for drivers.

[0051] Furthermore, the framework structure that employs the pillars 115 increases the strength of the side insulation panel 110 against external forces. The improved strength of the side insulation panel 110 improves durability against loads applied in the Z direction of the side insulation panel 110 during lashing. Furthermore, the improved strength of the side insulation panel 110 also improves durability against deformation of the insulation panel due to vibrations when the refrigerated truck is in operation, preventing damage to the vacuum insulation material.

[0052] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0053] 1 refrigerated vehicle, 110 side insulation panel, 111 outer plate, 112 column member, 112f flange portion, 120 top insulation panel, 130 floor insulation panel, 140 front insulation panel , 140A ventilation window, 150 rear insulation panel, 160 lining panel, 161 inner plate, 162 first insulation material, 163 second insulation material, 163h recess, 170 third insulation material, 180 Resin joint joiner, 200 refrigerated vehicle floor, 210 C-shaped channel steel, 211 beam member, 212 floor structural material, 213 floor material, 220 steel plate, 230 floor insulation panel member, 231 fourth insulation material, 232 fifth insulation material, B1 screw, CA refrigerated space, S1 side wall gap, S2 floor gap.

Claims

[Claim 1] A refrigerated vehicle having a refrigerated space, The cold storage space is Side insulation panels arranged on the left and right sides of the refrigerated vehicle, A top insulation panel disposed on the top side; A floor insulation panel disposed on the floor surface; A front insulation panel disposed on the front side; a rear insulation panel disposed on the rear side; The floor insulation panel is A plurality of beam members are arranged at predetermined intervals from the front to the rear of the refrigerated car on the refrigerated car floor surface of the refrigerated car and extend in the left-right direction; A floor structure material disposed on the plurality of beam members; A floor surface material to be placed on the floor structure material; A floor insulation panel member disposed in a floor gap between the refrigerated vehicle floor surface and the floor structural material between adjacent beam members; Including, The floor insulation panel member is A heat insulating material disposed on the floor structural material side; A heat insulating material is arranged on the floor surface side of the refrigerated vehicle, The heat insulating material disposed on the floor structural material side is a vacuum heat insulating material, The heat insulating material arranged on the floor surface side of the refrigerated vehicle is an extruded polystyrene foam, In the floor gap, the vacuum insulation material is arranged so as to provide a gap between the vacuum insulation material and the beam member, The extruded polystyrene foam is disposed in contact with the beam member. Refrigerated vehicle.

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