WO2004015340A1

WO2004015340A1 - Container for cargo

Info

Publication number: WO2004015340A1
Application number: PCT/JP2003/010206
Authority: WO
Inventors: Mamoru Omuta; Osamu Tabuchi; Jing Chun Li
Original assignee: Rokko Engineering Co.,Ltd.
Priority date: 2002-08-09
Filing date: 2003-08-11
Publication date: 2004-02-19
Also published as: AU2003254934A1; JP2004069259A; JP3669503B2

Abstract

A container (tank etc.) for cargo, having a cooling or a heating function and being suitable for relocation and transportation. A tank main body (10) having a panel (12) on its wall face, with a heat-moving medium being passed through the panel, a refrigerating machine (20) including a cooler (21) for cooling the heat-moving medium to be sent to the panel (12), and medium supplying means (30) for circulating the heat-moving medium to the cooler (21) and the tank main body (10) through a pipeline (30A) are assembled together so as to be movable as one piece. The medium supplying means (30) is provided with a sealed-type expansion tank (36) of a closed system not allowing the heat-moving medium to be in contact with outside air. Flexible absorbers (38A, 38B) are provided between a pipeline fixed to the tank main body (10) and a pipeline fixed to the other members.

Description

Freight container

[Technical field]

The present invention also relates to a cargo container, such as a container or a tank having a cooling or heating function, which is suitable for storing foods, beverages, and the like for transportation or the like.

It is.

Field [background art]

It is desirable that the milk tank storing milk has a cooling function to maintain the freshness of milk. A milk tank having a cooling function is described in, for example, Japanese Patent Application Laid-Open No. 7-81727.

As shown in Fig. 7, the milk tank described in the publication includes a tank body 10 'having a cooling water passage 12' formed on the wall and a cooling water tank (ice bank) 21 '. It is configured by connecting with a pipe 30 A 'or the like. The tank body 10 'has a large number of dimples (projections) 12a' formed on one side of the double-walled wall, and a gap is provided between the double-walled walls. It has a jacket structure with roads 12 '. Further, the water tank 21 'is connected to the refrigerator 20' so that the cooling water held inside can always be kept at a temperature close to 0 ° C. The cooling water in the water tank 21 ′ is supplied as brine (heat transfer medium) by brine supply means 30 ′ including a pipe 30A ′ and a pump 31 ′, etc. Circulate through.

Note that Japanese Patent Application Laid-Open No. 9-145017 is a prior art document regarding brine supply means. The conventional milk tank 3 'shown in Fig. 7 is not suitable for relocation or transportation. One of the reasons is that the aquarium 21 'is large, but the more essential reason is as follows. That is,

i) The tank body 10 'and the water tank 21' are not assembled so that they can move as a single unit. For example, when relocating the entire milk tank 3 ′ to another position, move the tank body 10 ′, water tank 21 ′, refrigerator 20 ′, etc. separately to the new location, It must be constructed and connected to each other.

ii) Even if the tank body 10 ′ and the water tank 21 ′ are connected by a frame or the like so that they can be easily moved, the tank body 10 ′ cannot be suitable for transportation by itself. Unless the connecting frame is completely rigid, vibrations during transportation and concentrated loads during unloading (lifting) will cause relative displacement between the tank body 10 and the water tank 21 ', etc. This is because excessive force acts on OA 'and the connection between it and each device.

iii) Since the open-to-atmosphere water tank 2 1 ′ is used, the amount of cooling water will decrease due to evaporation, etc., and dust may enter the cooling water. Since the volume of the cooling water changes with the temperature change, it is not appropriate to completely seal the water tank 2 1 ′ with a lid. Therefore, it is difficult to avoid the problems of water volume reduction and dust contamination. When transporting a milk tank, the amount of water tends to decrease due to the rising of the water surface, and dust tends to enter.

[Disclosure of the Invention]

An object of the present invention is to provide a cargo container (such as a tank) having a cooling or heating function, which is suitable for relocation and transportation so that the above-mentioned problems can be solved.

The cargo container of the present invention, a) A container body (tank, container, etc.) in which a flow path for a heat transfer medium (a medium for cooling or heating the wall, such as brine; cooling water in the example of FIG. 7) is formed on the wall. In the example of Fig. 7, the tank body 10 '), a cooler (such as a heat exchanger) that cools or heats the heat transfer medium sent to the wall of the container body, and a water tank 21' in the example of Fig. 7 Medium supply means (including a fluid device such as a pump) that circulates the heat transfer medium through a pipeline system (piping, ie, a system connected by pipes) to the container body. In the example of Fig. 7, brine supply means 30 ' ) And b) are assembled so that they can move together. B) The medium supply means should be a closed system that does not allow the heat transfer medium to come into contact with the outside air.

) Expansion tank (means for suppressing the pressure change by changing the volume for containing the medium according to the expansion and contraction of the medium)

c) In addition, a flexible pipe (such as a hose) is provided between the pipe fixed to the container body and the pipe fixed to another member as a part of the medium supply means. And

These cargo containers have the following functional characteristics: That is: • According to a) above, the heat transfer medium cooled or heated by the cooler is sent to the wall (flow path) of the container body by the medium supply means. It has a function to cool or heat the air. For example, the container body may be configured as a tank to hold a liquid such as milk (milk) in a cooled state (or a heated state). Also, the container body may be configured as a box-shaped container to store foods and the like. It is also good to put it in.

• Since the container body, the cooler and the medium supply means are assembled so that they can be moved together as shown in a), it is easy to relocate the entire unit and to transport cargo inside. Are also suitable. It is easy to lift the whole cargo container at once or put it on a truck or other transportation means It is because it can be done.

-Even if the load is concentrated on some equipment or frames during lifting, or if some equipment is displaced by vibration during truck transportation, etc., it will be connected to the pipeline connecting the container body and the heater / cooler. There is no danger of excessive force acting. As described in c) above, flexible pipes (hoses, etc.) are provided between the pipes fixed to the container body and the pipes fixed to other members (cooler, frame, etc.). This is because the relative displacement between the container body and other members is absorbed. Therefore, regardless of the transportation route (land / sea / air) or transportation means (truck / ship / aircraft), regardless of the skill of the cargo handling work, this cargo container can be used for pipes and connected equipment. It can be said that such a mechanical burden is light.

• Since the medium supply means is configured as a closed system as described in b) above, it is unlikely that the heat transfer medium will decrease due to evaporation, splashing, etc., and there is also the possibility that dust will be mixed into the medium. Few. Therefore, the container can be used for a long time without special maintenance. Although the medium supply means is a closed system, since the supply means has an expansion tank, the pressure of the heat transfer medium does not increase or decrease inappropriately due to volume change due to temperature change. . In addition, since the expansion tank itself is a sealed type, there is no concern that the medium will be reduced or dust will be mixed in due to the expansion tank. In addition, the closed system medium supply means including the closed type expansion tank does not allow the heat transfer medium to come into contact with air during operation, so that new oxygen does not dissolve into the heat transfer medium. There is also an advantage that the corrosion of the flow channel / pipe system can be suppressed. In addition, any of the features described here regarding the amount of heat transfer medium and the properties and pressures are extremely useful as a container for cargo transportation, which does not require special maintenance during transportation etc. despite being used for a long time. All that is preferred. The present invention further provides a means for discharging air in the pipeline system when the heat transfer medium is not flowing (such as a vent hole with a plug provided at the top of the pipeline) to the medium supply means. It is advisable to provide a means for separating and discharging air from the heat transfer medium when the medium is flowing (such as a commercially available automatic vent valve).

According to such a cargo container, air can be effectively exhausted from the pipeline system in the medium supply means or the flow path (formed on the wall surface) of the container body. When a new heat transfer medium is injected into the pipe system, the air remaining inside or mixed in with the injection can be exhausted by the former method. This is because, when circulating, air mixed in the heat transfer medium and moving as air bubbles can be separated and discharged by the latter means.

If air enters the pipe system of the medium supply means 手段 the flow path of the container body, etc., the pump that circulates the heat transfer medium will generate so-called air, making it impossible to continue smooth operation. This may hinder movement and reduce the cooling or heating function of the container body. Therefore, if air can be exhausted as described above using such cargo containers, the cargo container can be used stably for a long period of time, and the thermal performance of the container body can be enhanced.

A commercially available automatic air release valve has a container in which air bubbles contained in the fluid flowing through the pipe line are collected, and when a certain amount of air accumulates in the container, the buoyant body floats and opens the air discharge valve. And so on.

In the cargo container of the present invention, the medium supply means may be further provided with an in-pipe observation means having transparent walls (such as a so-called site glass). Discharging air from the heat transfer medium is an important technical matter for cargo containers that circulate the medium through the flow path of the container body as described above. Therefore, it is originally desirable to check whether the air in the medium has been exhausted sufficiently during test operation or commercial operation. However, it is generally difficult to observe the inside of the medium supply means from the outside during operation to know the amount of air mixed in the medium, especially when the medium supply means is configured as a closed system. is there.

In this regard, in the cargo container described above, since the in-pipe observation means is provided in the medium supply means, the state of air entrapment in the heat transfer medium can be externally observed through the transparent wall surface. it can. By using the observation means while circulating the medium during operation, it is possible to observe how much air bubbles and the like are contained in the flow, and thereby confirm the degree of air discharge and the amount of air mixed. By reducing the amount of air mixed in the test operation stage while observing in this way, and then starting commercial operation, it is possible to further improve the operational stability and functionality of the cargo container. Can be.

In particular, the cargo container of the present invention connects the above-mentioned closed type expansion tank upward from the pipe system of the medium supply means, and as the expansion tank, a space for accommodating the heat transfer medium and the space from the space for storing the heat transfer medium. It is better to use one that has an air discharge means at the top (the upper part in the expansion tank).

The air contained in the pipe system of the medium supply means is generally lighter than the heat transfer medium, and thus gathers at a higher position inside the pipe or the like. Also in the above-mentioned expansion tank, when it is closed and connected upward from the pipe system of the medium supply means, there is a possibility that air may accumulate in the space for storing the heat transfer medium in the tank. If the temperature rises in a state where a large amount of air accumulates therein, the air may flow out to the pipeline system of the medium supply means and cause the above-described inconvenience.

However, according to the above, an expansion tank having a heat transfer medium storage space and a means for discharging air from the storage space at the top is used. Then, the air that can accumulate can be easily discharged as described above. If the storage space for the heat transfer medium is provided in the upper part, the air accumulates from the upper part in the storage space, but there is an air discharge means on the upper part. In other words, even if air enters (or remains in) the expansion tank via the upward connection path from the pipe system of the medium supply means, the air accumulates in the upper part of the tank and remains there. It can be discharged smoothly by the discharge means.

In addition, if the expansion tank having the above-mentioned configuration is arranged at a high place in the pipe system of the medium supply means, the air that tends to accumulate in other parts of the pipe system than the tank is also removed. Through the air discharge means).

In the cargo container of the present invention, it is preferable that the medium supply means is further provided with a pressure regulating valve for limiting the maximum pressure of the heat transfer medium.

Since the expansion tank is provided, pressure fluctuation of the medium due to temperature change is usually sufficiently suppressed in the medium supply means in the cargo container. However, if the container is transported to a remote location for freight transportation, unexpected situations may occur in terms of environment and usage conditions. For example, the media pressure could rise excessively if the area is exposed to direct sunlight in a tropical area or if the volume of the medium supply system changes due to being hit by an object. is there.

In that regard, the cargo container of the present invention in which the medium supply means is provided with a pressure regulating valve can prevent abnormal pressure rise in the heat transfer medium even in such unexpected situations. This is because the pressure regulating valve prevents the pressure from rising. This means that the cargo container of the present invention can always carry cargo to a remote place very smoothly. With regard to the cargo container of the invention, in particular,

• The flow path of the heat transfer medium on the wall of the container body is formed as multiple panels,

• Headers (shunts) are provided on the medium supply means on the side where the heat transfer medium is sent from the cooler to the panel and on the side where the heat transfer medium returns from the panel to the cooler.

It is also possible to adopt a configuration in which two parallel pipes are formed between two headers for each panel or for each panel group in which a plurality of panels are connected in series.

In such a cargo container, since the flow paths of the heat transfer medium are configured in parallel, the flow path resistance is small as a whole, and the pressure required to circulate the medium is low. Therefore, the container body can be cooled effectively. In addition, since the flow path resistance is small, the fluctuation of the brine flow rate is small, and uniform cooling can be performed.

There is also an advantage that piping work and subsequent handling are easy. For example, since the pipeline system in the medium supply means is independent for each panel or each panel group as described above, it is not difficult to construct multiple pipeline systems simultaneously in parallel. In addition, when an abnormality is recognized by the flow meter or pressure gauge, it is easy to identify the location where the abnormality has occurred. In addition, even if there is a problem in some pipelines, the other systems will function normally without being affected, so that the cooling (or heating) function will not be completely stopped, and stable performance will not occur. Be demonstrated.

With regard to the cargo container of the invention, it is particularly significant that the container body described above is used as a tank for storing a liquid (milk, etc.) for transport or a container for storing a solid (fresh vegetables, etc.) therein. is there.

These tanks and containers transport foodstuffs (on land and at sea). Or transport by air). The cooling (or heating) function of the above-mentioned cargo container, the point that it is easy to move and transport as a single unit, and there is no inconvenience due to vibration, etc. The point that no special maintenance on the heat transfer medium is required This is because many merits make it possible to transport foodstuffs etc. in an appropriate manner that has not been available before.

When a container is constructed and cooled inside, there is also an advantage that cargo such as vegetables can be protected from drying or excessive cooling, and refrigerated in a state where the quality is not easily deteriorated. This is because the inside is cooled by flowing the heat transfer medium through the flow path on the wall surface as described above, instead of using a cooling method mainly by blowing out cold air.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of the embodiment of the present invention, and is a system diagram showing the entire medium supply means 30 together with the cooler 21 and the panel 12 of the tank body 10.

FIG. 2 is a system diagram showing a refrigerator 20 including the cooler 21 of FIG. FIG. 3 is a side view showing the entire tank 1 as a cargo container, including the tank body 10 of FIG.

Fig. 4 is a view showing a part of the tank 1 in Fig. 3; Fig. 4 (a) is a sectional view taken along the line IV-IV in Fig. 3, and Fig. 4 (b) is a view in Fig. 4 (a). FIG. 4 (c) is a sectional view taken along the line c-c in FIG. 4 (b).

FIG. 5 is a view of the tank 1 in FIG.

FIG. 6 shows another example of the embodiment of the invention, and is a perspective view showing a container 2 as a cargo container.

FIG. 7 is a perspective view showing the whole of a conventional milk tank. [Best Mode for Carrying Out the Invention]

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Tank 1 shown in Fig. 3 is a cargo container used to store milk (milk) inside and transport it while refrigerated. In addition to the tank body (container body) 10 that keeps milk at a low temperature, a refrigerator 20 and brine between the tank body 10 and the refrigerator 20 (a heat transfer medium. In this example, an antifreeze described later) A medium supply means 30 for circulating water is integrally assembled using a frame 15.

The tank main body 10 has a substantially cylindrical shape as shown in FIGS. 3 and 4 (a), and both ends are closed by a smoothly bulging end plate near the center. Since it stores milk and the like, it goes without saying that it has basic components such as an inlet and an outlet and auxiliary equipment. The following structure is added to the tank body 10 so that the milk and the like inside can be cooled and kept at a low temperature.

First, a plurality of panels 12 (12A to 12D) each having a channel for flowing brine thereinside are overlapped and joined to the outside of the wall surface 11 of the tank body 10. As shown in Fig. 3, four panels 12 were attached to each of the left and right sides of the tank main body 10, for a total of eight panels. As shown in Fig. 4 (a) and (b), the tank body 10 is provided with a urethane foam insulation 11A and a hard FRP protection 11B on the outside of the stainless steel wall 11 In contrast to being laminated in this order, each of the panels 12 is curved along the outer surface of the wall surface 11 to form a curved plate as a whole.

Cooling of the contents (milk, etc.) of the tank body 10 is performed by flowing a low-temperature (around -1 ° C) pipeline into the space formed between the panel 12 and the wall surface 11. The wall 11 of the tank body 10 is cooled by the direct contact of the brine without the intermediary of other members and the air layer, so cooling the contents is effective Can be done. Moreover, not only is there a space inside the panel 12 that simply fills the pipeline, but there is also a continuous area that defines the flow path and allows the brine to flow without stagnation. The flow of the pipeline is fast, so the cooling is strong and efficient.

The continuous area inside each panel 12 is formed as shown in Fig. 4 (c). (The same applies to panels 12Α, 12C, and 12D other than the 12B shown in the figure.) Is). In other words, the frame plate 12b is welded tightly to the entire periphery of the rectangular stainless steel curved plate 12a without any gap, and a plurality of partition plates are provided inside (the concave side) of the curved plate 12a. 1 2c is attached by welding. By appropriately setting the length of the partition plate 12c and the connecting relationship between each partition plate 12c and the frame plate 12b, from one corner of the panel 12 to one other corner A continuous region 1 2 d is formed between the two. At the corner where the continuation area 12d turns, a triangular piece 12e is fixed at the outer corner to smooth the flow. Then, an inlet 12 j is provided at the corner corresponding to one end of the continuous area 12 d (upper right part in FIG. 3), and the other end of the corner (lower left in FIG. 3) is provided. Part) has an outlet 12k.

Such a panel 12 is mounted on the outside of the wall 11 of the tank body 10 (inside of the heat insulating material 11c) as shown in Fig. 3 (a). Attachment is performed so that the curved plate 1 2a is on the outside and the frame plate 1 2b and the partition plate 1 2c are in contact with the wall surface 11 and are welded all around the frame plate 12 b (assembly). It is also preferable to devise the procedure described above and to weld between some of the partition plates 12c and the wall surface 11). When attached in this manner, the continuous area 12 d formed on the panel 12 becomes a flow path for brine between the panel 12 and the wall surface 11, and continues from the inlet 12 j to the outlet 12 k. Reference numeral 12 m in FIG. 4 (c) denotes a plug for an air vent hole (not shown) provided at the top of each panel 12. This air vent hole and plug 1 2 m It may be provided at one place where air bleeding of the entire inside is most easily performed, but it may be provided at each turn at the upper part of the continuous area 12d.

As shown in Fig. 3, the frame 15 that integrally supports the tank body 10 and a refrigerator 20 described later has increased rigidity while reducing the weight, so that it can be used during transportation or during cargo handling (lifting). The deformation of the tank body 10 during the operation) is suppressed as much as possible. The specific configuration of the frame 15 for that purpose is as follows.

• First, the horizontal frame material 16 A extending in the length direction of the tank body 10 is placed in parallel on the lower sides (front and back sides in Fig. 3) of the tank body 10 and The saddle 16B for supporting the tank body extending in the width direction of the tank body 10 is connected therebetween. Then, an arch-shaped upper frame member 16C is connected to the upper portion of the horizontal frame member 16A so as to connect both ends thereof. At the same time, the horizontal frame member 16A and the upper frame member 16C are connected by a vertical frame member 16D at portions other than both ends.

· The connection between the horizontal frame material 16A and the vertical frame material 16D is made at the connection between the horizontal frame material 16A and the support saddle 16B.

♦ The connecting portion 16E between the upper frame member 16C and the vertical frame member 16D is also connected to the wall 11 of the tank body 10.

• Both ends of each horizontal frame member 16 A located near both ends of the tank body 10 are connected to the end frame member 16 F formed in a quadrilateral so as to surround the tank body 10. The upper corner portion of the material 16F, which is not connected to the horizontal frame material 16A, is connected to the connection portion 16E via the support frame material 16G.

• The tops of the two upper frame members 16C are connected to each other by upper beam members 16H.

According to the frame 15 configured in this manner, the amount of frame material used is small. In spite of the absence, the displacement generated in the tank body 10 can be suppressed by the reinforcing action of the arch-shaped upper frame material 16C, and the mechanical load can be effectively reduced. That is, most of the weight of the tank body 10 acting on the horizontal frame member 16 A via the supporting saddle 16 B acts downward on the upper frame member 16 C via the vertical frame member 16 D, This is because the upper frame member 16C has an arch-shaped upwardly convex curve, forms an axially compressed state, hardly bends, and is hardly displaced downward. The tank body 10 is effectively reinforced by such an upper frame member 16C and the like, even if the middle of the horizontal frame member 16A is not supported at all during loading or transporting. Is suppressed. The refrigerator 20 as a means for cooling the brine flowing into the panel 12 in FIG. 3 is configured according to FIG. That is, the compressor 22, the condenser 23, the receiver 24, the expansion valve 25, and the cooler 21 were connected in this order via the pipe 20 A, the accumulator 26 A, the filter dryer 26 B, site glass (means for observing in the pipeline) 26 C, solenoid valve 26 D, CVQ 26 E, etc. are also installed in the pipeline 20 A as shown in the figure. The cooler 21 used as a cooler for the brine is an evaporator forming a part of the refrigerator 20, and heat is generated between the refrigerant in the refrigerator 20 and the below-described medium in the medium supply means 30. The exchange is performed.

Brine circulation, that is, the brine cooled by the cooler 21 is connected to each panel 12 (as shown in Fig. 3, panels 12 A and 12 B and panels 12 C and 12 D are connected in series. The return to the cooler 21 is performed by the medium supply means 30 shown in FIG. The medium supply means 30 is a device in which a plurality of devices are connected by a pipeline 30A, and the pipeline cooled by the cooler 20 is sent to the header 32 on the delivery side. In the example, it is branched into 4) circulation pipes, and each pipe And distributed in parallel to each panel 1 2 (the panel group described above). The brine that has passed through each panel group is passed through the return-side circulation pipe, collected into one pipe by the return-side header 134, and sent to the cooler 7 again. The circulation pipes branched as described above are provided with opening control valves 33 at positions close to the headers 32 and 34, respectively. As the brine, an antifreeze mixture of water (40%) and propylene glycol (60%) is used. Since this solution has a low freezing temperature of about 16 ° C, there is no possibility that the brine will grow as ice inside the medium supply means 30, so that the cooler 21 etc. can be configured compactly .

The following equipment is connected to the conduit 30A of the medium supply means 30 together with the headers 32, 34, and the like. First, a pump 31 is provided between the return header 14 and the cooler 21 as a means for sending the brine. In addition, a drain valve 32a for draining brine and a relief valve 32b as a pressure regulating valve (safety valve) for limiting the maximum pressure are provided directly connected to the header 32 on the delivery side. For the return header 34, connect the connector 34b for brine injection together with the check valve 34a. On the downstream side of the header on the return side, there is a part of a transparent glass wall to reduce the amount of air in the brine. 5 and an automatic air release valve 37 that can separate and discharge air from the flowing pipeline. In order to prevent a change in the volume of the brine due to a change in temperature from exerting a pressure load on the brine piping, a gas is supplied between the site glass 35 'and the automatic air release valve 37. An expansion tank 36 with a built-in bladder (elastic bag, not shown) is connected. The expansion tank 36 is connected to a pipe 36a extending upward from a vertically upper portion of the pipe 30A via a flexible pipe 36b, and the space in the tank containing the brine is located at the top. To be positioned In addition, an air vent hole with a plug 36c that can be opened and closed is provided at the top of the pipe 36a. The medium supply means 30 includes a so-called closed type in which the expansion tank 16 accommodates brine in a closed space and shuts off contact with the atmosphere, such as a storage tank that is open to the atmosphere. It is configured as a closed system that does not include a contact portion with

A plurality of flexible pipes (absorbers 138) each of which is formed by connecting short synthetic rubber pipes between the joints at both ends are connected to the pipe 3OA of the medium supply means 30. Considering that tank 1 is used for transporting milk, etc., excessive displacement of pipeline 3 OA (or the connection with it) due to relative displacement between each device due to vibration etc. during transport It is designed to avoid a mechanical burden. Absorbers 38 are first installed at two locations (absorbers 38 8 and 38B; see also FIG. 3), upstream of the feeder header 32 and downstream of the return header 34. I have. The two headers 13 2 · 3 4 and the part such as the panel 12 connected between them are fixed to the tank body 10 or the frame 15, while the other parts (headers 3 2 · 3 The part closer to the cooler 21 than the part 4 is fixed together with the refrigerator 20 etc. to the support frame 20 B (connected to the frame 15 by welding or the like) in FIG. This is because relative displacement is likely to occur between them. Further, as shown in FIG. 1, similar absorbers 38 C and 38 D are connected to the upstream and downstream sides of the pump 31. The pump 31 is fixed to the support frame 20B shown in FIG. 5 together with the front and rear parts, the refrigerator 20 and the like. It is. In addition, since the expansion tank 36 also has a relatively large weight, a flexible tube 36b having the same function as that of the absorber 38 is connected to the tube 36a to eliminate the inconvenience due to the relative displacement. I have.

In addition to the above, check valve 30 B, pressure gauge 30 C, thermos Tat 30D, on-off valve 30E, strainer 30F, etc. are also connected appropriately. In addition, in order to smoothly discharge the air inside when new brine is injected, etc., air with a plug 30M attached to the higher part of the pipeline 3OA, for example, as shown in Fig. 3, Drilled holes are provided.

FIG. 5 is a view of the tank 1 of FIG. 3 as viewed from one end (a view taken in the direction of arrows VV). At the end on the illustrated side, together with the entire refrigerator 20, devices included in a portion of the medium supply means 30 closer to the refrigerator 20 than the above-mentioned absorber 38 are supported by a support frame. Mounted on 20 B. The support frame 20B is fixed to the frame 15 in FIG. 3 by port nuts or the like. Reference numeral 27 in FIG. 5 denotes a control panel, and reference numeral 28 denotes a fan. FIG. 6 shows another example of the embodiment of the present invention, in which the container 2 as a cargo container is shown in a perspective view (including a see-through portion). Container 2 is a container suitable for transporting fresh vegetables inside while keeping them refrigerated. The container 2 also has a refrigerator 50 as shown in the figure, and a brine (heat transfer medium) cooled by a cooler (cooler / heater) in the refrigerator 50 is used as shown in FIG. The internal space is cooled by flowing through the flow path in the panel 42 placed on (the inner surface of) 41. A door 41a is provided at the end opposite to the side where the refrigerator 50 is arranged, and the door is opened and closed to carry in and out of goods. In this container 2 as well, a pipeline 6 OA, a pump, etc. for circulating the line between each panel 42 (a panel group in which 2-3 panels 42 are connected in series) and the refrigerator 50 are provided. A medium supply means 60 including the same is provided. The container body 40, the refrigerator 50, and the medium supply means 60 are integrally assembled so as to be suitable for transportation.

Although detailed illustration is omitted (see Fig. 1 etc.), the following configuration and equipment are also used for the medium supply means 60 of the container 2 to improve suitability for freight transportation. That is, • The closed expansion tank was connected to the line 6 OA, and the open air equipment was not used in other parts, and the medium supply means 60 was a closed circuit.

• Headers are provided on each side of the brine from the cooler of the refrigerator 50 to the panel 42 and on the return side of the cooler from the panel 42 to the cooler. In addition, independent pipelines are formed in parallel.

• In parts where relative displacement is likely to occur due to vibrations during transportation, for example, where piping is carried out between the container body 40 and the refrigerator 50, etc., a flexible pipe (absorber) ).

• Provide air vent holes (with plugs) in the portion of pipeline 60 A that passes through the high position and on the top of panel 42. The pipe to the expansion tank was also connected upward from line 6 O A, and air was stored in the upper part of the expansion tank, and the stored air was discharged from the upper part.

· An automatic air bleed valve that can separate and discharge air while the brine is flowing is connected to a part of the pipeline 6 O A. Also, a site glass (means for observing the inside of the pipe) that can check the amount of air in the flow from outside can be included in the pipe 6OA.

• A safety valve (relief valve) that limits the maximum pressure of the brine is connected to a part of the line 60 A.

[Industrial applicability]

That the inside of the container body can be cooled or heated, that the container body, the cooler and the medium supply means can be moved together, and that there is little mechanical load on the pipes and equipment connected to them during transportation and cargo handling; Whether a closed expansion tank is used and the medium supply means is configured as a closed system Furthermore, the cargo container of the present invention is particularly advantageous in that foods and the like are put in the container and used smoothly for a long time while being transported or handled.

Claims

The scope of the claims

1. A container body with a heat transfer medium flow path formed on the wall, a cooler that cools or heats the heat transfer medium sent to the wall of the container body, and a pipeline for the cooler and the container body. And a medium supply means for circulating the heat transfer medium by the system are assembled so as to be integrally movable,

The medium supply means is of a closed system that does not allow the heat transfer medium to come into contact with the outside air, has a closed expansion tank, and is provided with a pipe fixed to the container body and a pipe fixed to another member. A cargo container characterized by having a flexible conduit in between.

2. The medium supply means includes a means for discharging air in the pipeline when the heat transfer medium is not flowing, and a means for separating and discharging air from the heat transfer medium when the heat transfer medium is flowing. The cargo container according to claim 1, wherein the cargo container is arranged.

3. The freight container according to claim 1 or 2, wherein the medium supply means is provided with an in-pipe observation means having a transparent wall surface.

4. The above-mentioned closed type expansion tank, which is connected upward from the pipe system of the medium supply means, and has a space for accommodating the heat transfer medium and a means for discharging air from the space at the top. The cargo container according to claim 1 or 2, wherein:

5. The above-mentioned closed type expansion tank, which is connected upward from the pipe system of the medium supply means, and has, at the top, a space for accommodating the heat transfer medium and a means for discharging air from the space. The freight container according to claim 3, wherein:

6. A pressure regulating valve that limits the maximum pressure of the heat transfer medium to the medium supply means The cargo container according to claim 1 or 2, wherein a cargo container is provided.

7. The cargo container according to claim 4, wherein the medium supply means is provided with a pressure regulating valve for limiting the maximum pressure of the heat transfer medium.

8. The flow path of the heat transfer medium on the wall surface of the container body is provided as a plurality of panels, and the medium supply means includes a supply side of the heat transfer medium from the cooler to the panel and a cooler from the panel. A header is provided on each side of the return line, and an independent parallel conduit is formed between the two headers for each panel or for each panel group in which multiple panels are connected in series. The cargo container according to claim 1 or 2, wherein

9. The flow path of the heat transfer medium on the wall surface of the container body is provided as a plurality of panels, and the medium supply means includes a supply side of the heat transfer medium from the cooler to the panel and a cooler from the panel. A header is provided on each side of the return line, and an independent parallel conduit is formed between the two headers for each panel or for each panel group in which multiple panels are connected in series. The cargo container according to claim 4, wherein the cargo container is provided.

10. The container body according to claim 1, wherein the container body is a tank for containing and transporting a liquid, or a container for containing and transporting a solid. Cargo container aa described in paragraph 5, paragraph 7 or paragraph 9

11. The cargo container according to claim 4, wherein the container body is a tank for storing and transporting a liquid, or a container for transporting and storing a solid. .