JPH024947Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a container equipped with a ventilation system on its wall, and is particularly suitable for use in containers for transporting perishables used in land transportation such as trucks and railways. .

Conventionally, in containers for transporting cargo, particularly perishable foods, etc., the moisture emitted by the cargo itself increases the humidity inside the container, making the cargo susceptible to damage. Therefore, these containers are usually equipped with ventilation systems.

However, these containers are not only subject to quite severe shaking during transport, for example, by truck, but are also often exposed to rain and snow accompanied by strong winds, so rainwater can enter the container through the ventilation system, and the cargo cannot be ventilated. In some cases, the equipment was damaged.

Therefore, it is necessary to frequently add drainage plates to the above-mentioned ventilation system, or, as shown in Japanese Utility Model Publication No. 53-32837, to simply install a dehumidifying member across the ventilation passage without changing the cross section of the ventilation passage. Some measures have been taken to prevent rainwater from entering, such as by installing a layer, but none of these improvement measures resulted in a reduction in the amount of ventilation, so they did not lead to an improvement in the situation.

In view of the above-mentioned points, the present invention provides a container that can block rainwater from entering the container without substantially reducing the amount of ventilation.

In the present invention, the outside air introduced into the ventilation passage from the first ventilation hole connected to the lower end of the cylindrical ventilation passage is passed through the second ventilation hole provided at the upper end of the ventilation passage and through the outer wall board. Moisture contained in the outside air is removed by arranging a board material that bends this ventilation passage at a predetermined position and suddenly changes the cross section of this ventilation passage in the ventilation passage of the ventilation system configured to be introduced inside the exterior wall board. In addition, a lining made of a hygroscopic material is provided on the inside of the outer wall board at a predetermined distance from the outer wall board and approximately parallel to the outer wall board, so that the lining and the outer wall board are connected to each other. A gap is formed in between, and the lining is provided with a vent hole of a predetermined size that horizontally divides the lining, and the gap is filled with a water absorbing material, which is introduced from the second vent hole. The container is configured such that when the outside air passes through the water-absorbing material, moisture is further removed and the air flows out from the vent. Therefore, even if rainwater passes through the ventilation system,
Water absorption material prevents water from entering the container.
Moreover, since the above-mentioned water-absorbing material is filled in a sufficiently wide gap, the cross-section of the flow path when outside air passes through this water-absorbing material is taken into consideration, as well as the fact that this outside air flows in almost all directions along the lining. Large enough. Therefore, there is no possibility that the flow will be constricted within the water absorbing material.

Additionally, ventilation in this type of container relies mostly on natural convection, so the flow rate is extremely low. Therefore, when comparing the amount of ventilation between the present invention and a conventional container that does not use a water-absorbing material, the pressure loss due to the flow within the water-absorbing material can be almost ignored.

Thus, since the amount of ventilation is substantially controlled by the size of the cross section of the flow path, there is almost no possibility that the amount of ventilation will decrease due to the use of the water-absorbing material.

Furthermore, since the lining is made of a hygroscopic material, the lining can also be expected to have the effect of reducing the humidity inside the container.

Hereinafter, an embodiment in which this invention is applied to a container for transporting perishables (hereinafter abbreviated as "container") used in land transportation such as trucks and railways will be described with reference to FIGS. 1 to 8.

FIG. 1 is a rear view of the same container as above, and a double door 1 is attached. Also, this door 1 wall 2
A corrugated board 3 is used for the outer panel of the container, and ventilation devices 4 are installed above and below the concave portion of the corrugated board 3 when viewed from the outside of the container.

FIG. 2 is a side view of the same container as above, in which a corrugated board 3 is fitted into a box-shaped frame formed by upper and lower rails 7, 8 and left and right pillars 9 to form a wall portion 2. Further, similar to the wall portion 2 of the door 1, ventilation devices 4 are attached to the wall portion 2 above and below the concave portion of the corrugated board 3 when viewed from the outside of the container.

3 and 4 show one of these ventilators 4 attached to the upper part of the corrugated board 3, and reference numeral 10 designates the outer panel of the ventilator 4. This outer panel 10 is fitted into the corrugated board 3 so as to fill the recessed portion of the corrugated board 3, and its ends are attached to the corrugated board 3 with rivets 11 to form a closed space.

The closed space is formed by a draining plate 15 formed by bending one plate 14, which extends 50 mm in the vertical direction.
The divided spaces are separated by the plate 14.
They are communicated with each other through a long hole 16a or a plurality of circular holes 16b.

In addition, a plurality of ventilation holes 1 are provided at the lower end horizontal portion 10a of the outer panel 10 and at the upper position of the corrugated board 3, respectively.
7 and 18 are provided. Note that the reference numeral 21 indicates a plate 14 that is bent to form the elongated hole 16a.
It functions as a ventilation baffle.

The air thus taken into the container is led to the ventilation device 4 through the first ventilation hole 17 at its lower end, as shown by arrow A in FIG.
It ascends through repeated twists and turns through the second ventilation hole 18 provided at the upper end of the ventilation system 4.
It is introduced into the container via the water absorbing material 29 as will be described later.

During this time, the moisture in the air is removed by the elongated holes 16a and the baffle plate 21, the humidity of the air decreases, and the separated moisture descends while passing through the diagonally installed draining plate 15. 1 ventilation hole 1
7 to the outside of the container.

Note that when the air inside the container is discharged to the outside, this air flows in the direction exactly opposite to the arrow A in FIG. 3. Furthermore, although the explanation above has been given for the case where the ventilation device 4 is provided at the top of the corrugated board 3, when the ventilation device 4 is provided at the bottom of the corrugated board 3, the ventilation device 4 can also be connected by the bottom rail 8.
There is no structural difference at all except that the ventilation device 4 is separated from the bottom rail 8 and attached to the corrugated board 3 as shown in FIG. 2 so that the ventilation holes 17 and 18 at the lower end are not blocked. Therefore, the explanation thereof will be omitted.

Next, the side part 2 of the container shown in Figs.
2. To describe the internal structure of the wall 2 when the ventilation device 4 is installed on the wall 2 of the end 23 or the door 1 provided on the end 23, the internal structure of the wall 2 is as follows: A lining 25 with ventilation holes 24 is provided at intervals as shown in FIG. 5, and a gap 28 between the corrugated board 3 and this lining 25 is made of styrene foam strips or the like as shown in FIG. Water absorbing material 29 is filled. Note that the above-mentioned predetermined interval refers to an interval that does not impede the flow of ventilation within the water-absorbing material 29, and the details thereof will be described later.

By the way, since the above structure is almost the same in any part of the wall part 2, the wall part 2 that constitutes the side part 22 of the container will be described in detail.
As shown in FIG. 6, a plurality of lining receiving materials 30 are erected along the side surfaces of the upper and lower rails 7 and 8, and each end is fixed to the upper and lower rails 7 and 8, respectively.

Next, the lining material 26 is applied using this lining material 30 as a lining material as shown in FIG. Depending on the properties of the water absorbing material 29, the thickness is selected so as to provide a necessary and sufficient flow path cross section for the flow of outside air passing through the water absorbing material 29. Furthermore, as is clear from the plan view of the container floor 31 in FIG. 8, the lining receiving material 30 is arranged with care so that the second ventilation hole 18 is not blocked.

Furthermore, the lining 25 has a fifth section between each lining material 26.
As shown in the figure, it is constructed by separating and pasting each other, thereby allowing the required ventilation holes 24,
That is, vents are formed between the lining materials 26 to a size that allows the outside air that has passed through the water-absorbing material 29 to flow into the container with little resistance.

Next, as shown in FIGS. 6 and 8, the floor section 31 includes a bracket 32 that extends from the bottom rails 8 of the side sections 22 and extends a beam member 35 between the bottom rails 8 of the side sections 22 that are arranged opposite to each other, as shown in FIGS. It is constructed by arranging and fixing flooring materials 36 having a rectangular cylindrical cross section on the plane formed by this girder material 35, and in addition, around the four sides of this flooring section 31,
As shown in FIG. 6, a floor gutter 37 with a U-shaped cross section is provided, a drainage hole 38 is attached to this floor gutter 37, and a screen 39 is laid over the entire surface of this floor portion 31.

Next, the structure of the roof portion 41 will be described with reference to FIGS. 6 and 7. A box-shaped frame formed by four top rails 7 is hung with a plurality of rafters 42 having a channel-shaped cross section as shown in FIG. Pass these rafters 4
A roof outer panel 43 is arranged so as to cover the top rail 7 and the top rail 7, and is fixed to the rafter 42 and the top rail 7.

A ceiling plate 44 is attached to the lower surface of the web of the rafter 42 to form a ceiling, and a gap 45 between the ceiling plate 44 and the roof outer plate 43 is filled with a heat shielding material 48 such as styrene block material. .

Note that the thickness b of the heat shield material 48 is determined by appropriately selecting the flange height of the rafter member 42 to obtain a required dimension.

Thus, in the container described above, the air entering the container from the ventilation device 4 through the second vent 18 is already considerably dehumidified by the ventilation device 4, but this air is If the water enters the water absorbing material 29 through the second ventilation hole 18 and passes through it, the water is further removed as necessary and sufficient.
Therefore, the air entering the container from the air passage 24 provided in the lining 25 as shown by arrow A in the figure is completely dehumidified, and there is no risk of damaging the cargo.

Moreover, since the water-absorbing material 29 is filled in a sufficiently wide gap 28, the outside air from the second ventilation hole 18 flows out in almost all directions along the lining 25, and the water-absorbing material 29 is filled with water. The cross section of the flow path is sufficiently large. Therefore, the flow of outside air is hardly restricted within the water absorbing material 29. In addition, since ventilation relies almost entirely on natural convection, the flow velocity is low, and therefore the pressure loss of the flow within the water-absorbing material 29 can be almost ignored. Thus, there is no risk that the amount of ventilation in the container will be reduced due to the water absorbing material 29.

Furthermore, if water accumulates in the water absorbing material 29, it will fall toward the floor 31 due to its own weight, and after being collected in the floor bucket 37 as shown by arrow B in FIG. It is discharged outside the container.

In this case, since the cargo is packed on the cage 39, there is no fear that the cargo will get wet with the water. Note that the screen 39 is the floor part 31
Since it also serves as a passageway for some of the air flowing from below the cargo to the top, it can also be expected to have the effect of promoting air circulation within the container.

Furthermore, since the roof portion 41 is thermally insulated using the heat shielding material 48, there is no extreme temperature rise or fall within the container, and therefore the cargo is less likely to be damaged. Further, such a small temperature change, together with the provision of the lining 25, prevents dew condensation on the inner wall of the container, thereby preventing the cargo from getting wet.

Next, the lining material 26, the ceiling board 44 and the screen 3
Since hygroscopic materials such as wood, plywood, fiber-reinforced cardboard, etc. are used in the cargo container 9, the moisture-absorbing properties of the lining material 26, the ceiling panel 44, and the screen 39 further reduce the risk of the cargo being exposed to moisture. Furthermore, the heat insulating effects of the lining material 26 and the ceiling plate 44 themselves also work advantageously to prevent damage to cargo.

Although the present invention has been described above with reference to one embodiment, the above-mentioned embodiment is not intended to limit the present invention.
Various modifications are possible based on the technical idea of the present invention. For example, the present invention is not limited to containers for transporting perishables used in transportation vehicles such as trucks, but can be applied to a wide range of general containers.

Further, unlike the embodiment, the portion where the inner lining 25 is provided and filled with the water absorbing material 29 and used as a ventilation path may be limited to, for example, the side portion 22 or the end portion 23 of the container.

Furthermore, the water-absorbing material 29 is made of hygroscopic porous material in addition to styrofoam strips, and the heat-shielding material 48 is made of hygroscopic porous material.
A wide variety of materials with heat shielding or heat insulating properties, which are often used in construction materials, can be used for this purpose.

Since the present invention has the above-described configuration, even if rainwater accidentally passes through the ventilation equipment, the water-absorbing material can completely prevent this rainwater from entering the container. .

Moreover, since the water-absorbing material is filled in a sufficiently wide gap, the flow of outside air is hardly restricted within the water-absorbing material. Furthermore, since ventilation relies almost entirely on natural convection, the flow velocity is low, and therefore the pressure loss of the flow within the water-absorbing material can be almost ignored. Therefore, unlike the conventional case, it is possible to effectively prevent rainwater from entering the container and still prevent a decrease in the amount of ventilation.

Furthermore, since the lining is made of a hygroscopic material, this lining not only helps in forming the above-mentioned gap, but also works extremely effectively in reducing the humidity inside the container.

[Brief explanation of the drawing]

Figures 1 to 8 show an example in which this invention is applied to a container for transporting perishables used in transportation means such as trucks. Figure 1 is a rear view of the same container, and Figure 2 is a rear view of the same container. Container side view, 3rd
The figure is a vertical sectional view of the main part of the container wall, FIG. 4 is a partially cutaway front view of the main part of the container, FIG. 5 is a perspective view of the container with the door open, and FIG.
FIG. 7 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 8 is a cutaway plan view of the same container. Also, in the symbols used in the drawings, 1...
Door, 2... Wall, 3... Corrugated board (exterior wall board),
4... Ventilation device, 7... Top rail, 8... Bottom rail, 14... Board, 17... First ventilation hole, 18... Second ventilation hole, 22... Side part, 23
...Given, 24...Vent, 25...Inner lining, 2
6... Lining material (hygroscopic material), 28... Gap part,
29...Water absorbing material, 31...Floor section, 37...Floor bucket,
38...drain hole, 39...screen.

Claims (1)

[Scope of utility model registration request] The outside air introduced into this ventilation passage from a first ventilation hole connected to the lower end of the cylindrical ventilation passage passes through a second ventilation hole provided at the upper end of the ventilation passage and passing through the exterior wall board, and then to the inside of the exterior wall board. A plate material is arranged in the air passage of the ventilation system configured to introduce moisture into the air passage, which bends the air passage at a predetermined position and suddenly changes the cross section of the air passage. At the same time, an inner lining made of a hygroscopic material is provided on the inside of the outer wall board at a predetermined distance from the outer wall board and approximately parallel to the outer wall board, thereby creating a gap between the inner lining and the outer wall board. The inner lining is provided with a vent hole of a predetermined size that horizontally divides the inner lining, and the gap is filled with a water-absorbing material, so that the outside air introduced through the second vent hole is provided. The container is configured such that when passing through the water-absorbing material, water is further removed and flows out through the vent.