JP2020139710A - Marine transport container refrigeration machine and marine transport refrigeration container - Google Patents

Abstract

To provide a refrigeration unit for a marine transport container that can maintain refrigeration and cold storage capacity of a storage even when a trouble occurs in one of the refrigeration units during marine transportation, and to provide a marine transport refrigeration container.SOLUTION: A marine transport refrigeration machine includes: a casing body 20 fitted to an opening part 103 on an opposite side to an opening part 102 fitted with a door 104 of a standardized container body 101; and two refrigeration units 30A, 30B arranged in parallel horizontally in the casing body 20 and capable of operating simultaneously or operating solely in an independent manner.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container refrigerator for marine transportation and a refrigerating container for marine transportation.

The size of containers for marine transportation has been internationally standardized in order to improve the efficiency of the international logistics system, and 40 feet and 20 feet are the mainstream for containers (dry / frozen) on foreign routes. There are 40 feet, 20 feet, and 12 feet of containers (dry / frozen) on domestic routes, and on remote islands in Kyushu and Kagoshima prefecture, they are used according to the size of the quantity, such as 8 feet and 6 feet.

Dry containers are the most popular type used for many general freight transports. The freezing container is used for transporting frozen / refrigerated cargo (fresh foods such as fruits, vegetables, meat, seafood, etc.), and has a built-in refrigerator to keep the inside of the refrigerator at a predetermined temperature.

Various proposals have been made conventionally for refrigerated containers for marine transportation (see Patent Document 1, Patent Document 2, and Patent Document 3).

Japanese Unexamined Patent Publication No. 06-094343 Japanese Unexamined Patent Publication No. 2011-257087 Jitsukaisho 58-158293

However, since the conventional freezing container has a structure provided with only one freezing unit, if a trouble occurs in the freezing unit during marine transportation, it becomes impossible to keep the inside of the refrigerator at a predetermined temperature, and the freezing stored in the refrigerator・ There is a risk of property damage to refrigerated cargo. Further, in order to avoid this trouble, if maintenance personnel are always on board, another problem arises that the transportation cost increases.

The present invention has been made in view of the above problems, and it is possible to maintain the freezing / refrigerating capacity in the refrigerator even if a trouble occurs in one refrigerating unit during marine transportation. The purpose is to provide a freezing container for marine transportation equipped with the machine and the refrigerator.

To solve the above problems
The container refrigerator for marine transportation according to the present invention is
The casing body of the standardized container body, which is attached to the opening opposite to the opening where the door is attached,
Its main feature is that it is arranged in parallel on the left and right sides of the casing body and is equipped with two refrigeration units that can be operated simultaneously or independently.

Further, the container refrigerator for marine transportation according to the present invention is
The lower outdoor compartment of the casing body is divided into two rooms, one room has the compressor of one refrigerating unit, the outdoor unit fan, the condenser and the control box, and the other room has the compressor of the other refrigerating unit and the outdoor. Machine fan, condenser and control box are arranged respectively
The upper indoor compartment of the casing body is divided into two rooms, one room has the evaporator and indoor unit fan of one refrigeration unit, and the other room has the evaporator and indoor unit fan of the other refrigeration unit. Has been
This is the second feature.

Further, the container refrigerator for marine transportation according to the present invention is
The third feature is to provide an automatic operation mode for switching from simultaneous operation of two refrigerating units to independent operation of one refrigerating unit when the outside air temperature falls below the set temperature.

Further, the container refrigerator for marine transportation according to the present invention is
Fourth, when the difference between the internal temperature and the set temperature falls within a certain range, the automatic operation mode is set to switch from the simultaneous operation of two refrigeration units to the independent operation of one refrigeration unit. It is a feature.

The frozen storage container for marine transportation according to the present invention
The fifth feature is that the automatic operation mode is set to switch the left and right refrigeration units alternately when switching from the simultaneous operation of two refrigeration units to the independent operation of one refrigeration unit.

The frozen storage container for marine transportation according to the present invention
Standardized, with a container body with a door attached to one opening and a refrigerator in the other opening
The refrigerator
With the casing body attached to the other opening of the container body,
Its main feature is that it is arranged in parallel on the left and right sides of the casing body and is equipped with two refrigeration units that can be operated simultaneously or independently.

According to the present invention, two refrigerators are provided in the opening of the container body opposite to the opening to which the door is attached, and these two refrigerators can be operated simultaneously or independently. , Even if one of the refrigerating units has a problem that the operation is interrupted during marine transportation, the operation of the other refrigerating unit makes it possible to keep the inside of the refrigerator at a predetermined temperature, and the freezing / refrigerating that is stored in the refrigerator. It has the effect of preventing property damage to the cargo.

Further, according to the present invention, in order to avoid the trouble of property damage, it is not necessary to have maintenance personnel on board at all times, and it is possible to prevent an increase in transportation cost.

Perspective view of a marine shipping container equipped with a container refrigerator, A view of the marine shipping container shown in FIG. 1 as viewed from the door side. A perspective view of the marine shipping container shown in FIG. 1 as viewed from the door side. Front view of container refrigerator, Rear view of container refrigerator, Longitudinal section showing the operation of a container refrigerator, Perspective view of another size marine shipping container equipped with a container refrigerator, It is a perspective view of the container for marine transportation of another size equipped with a container refrigerator.

The best mode for carrying out the present invention will be described with reference to the drawings. 1 to 6 show an embodiment according to the present invention. In these figures, reference numeral 10 indicates a container refrigerator for marine transportation (hereinafter referred to as container refrigerator 10), and reference numeral 100 indicates a refrigerating container for marine transportation.

First, in the freezing container 100 for marine transportation (hereinafter referred to as the freezing container 100), as shown in FIGS. 1 and 3, a door 104 that can be sealed and opened is attached to one opening 102 of the container body 101, and the other. The refrigerator 10 is provided in the opening 103 of the above.

As shown in FIG. 2, a storage space S for storing frozen / refrigerated cargo is provided inside the container body 101, and a heat insulating material 105 is provided so that the storage space S in the refrigerator can be maintained at a predetermined temperature. A drainboard 106 is installed on the floor in the refrigerator to circulate cold air.

Next, as shown in FIG. 4, the refrigerator 10 includes a casing main body 20 and two refrigerating units 30A and 30B independently attached to the left and right sides of the casing main body 20.

The casing main body 20 has a frame shape attached to the inner surface of the opening 103 of the container main body 101, and as shown in FIG. 6, the upper internal storage portion 22 that opens toward the inside of the container main body 10 It is provided with a lower storage portion 24 that opens toward the outside of the container body 10.

As shown in FIG. 5, the upper storage unit 22 is divided into two left and right chambers 22A and 22B by a central partition plate 26. Similarly, as shown in FIG. 4, the lower storage portion 24 is divided into two left and right chambers 24B and 24A by a central partition plate 26.

In the refrigerating units 30A and 30B, the indoor units are arranged side by side in the upper storage unit 22 of the casing main body 20, and the outdoor units are arranged in parallel in the lower storage unit 24 at the same time. It can be operated independently or independently.

Explaining the refrigerating unit 30A, as an indoor unit, as shown in FIG. 5, an evaporator 31 and two indoor unit fans 32 are provided in a compartment 22A of a storage portion 22 in the upper chamber of the casing main body 20. .. Further, as an outdoor unit, as shown in FIG. 4, a compressor (compressor) 33, an outdoor unit fan 34, and a condenser (condenser) 35 are provided in the compartment 24A of the lower storage unit 24 of the casing main body 20. .. Further, these indoor units and outdoor units are connected by a pipe 36. Further, a control box 37 for controlling these devices is provided in the compartment 24A of the lower storage unit 24.

Similarly, the other refrigerating unit 30B is provided with an evaporator 31 and one indoor unit fan 32 in the compartment 22B of the upper internal storage portion 22 of the casing main body 20 as an indoor unit, and the casing main body 20 is provided as an outdoor unit. A compressor 33, an outdoor unit fan 34, and a condenser 35 are provided in the compartment 24B of the lower outer casing storage portion 24 of the above. It also includes a control box 37 that controls these devices.

The size of the container body 101 is standardized, and the refrigerating container 100 shown in FIGS. 1 to 3 is a 12-foot type (8'x 8'6 "x 12'). The refrigerating container shown in FIG. 7 is a 12-foot type. The 200 is a 20-foot type (8'x 8'6 "x 20'), and the refrigerating container 300 shown in FIG. 8 is a 40-foot type (8'x 8'6" x 40'). Not limited to the size, tall type and sizes of 8 feet and 6 feet are also applicable.

Next, the operation of the container refrigerator 10 having the above configuration will be described below with reference to FIGS. 1, 6 and the like.

After loading the frozen / refrigerated cargo on the container body 101, the door 104 is closed to seal the inside of the refrigerator. Each of the control boxes 37 of the two refrigeration units 30A and 30B is provided with an automatic operation mode and a manual operation mode. In the automatic operation mode, basically, two refrigeration units 30A and 30B are operated at the same time. In the manual operation mode, each can be operated independently.

When an operator sets the internal temperature to, for example, 4 ° C. in each control box 37 of the two refrigerating units 30A and 30B and presses the start button in the automatic operation mode, the two refrigerating units 30A and 30B operate simultaneously. To start. Both buttons may be set to start simultaneous operation, or one of the buttons may be set to start simultaneous operation.

With reference to FIG. 6, each indoor unit fan 32, compressor 33, outdoor unit fan 34, etc. are operated, the refrigerant compressed by the compressor 33 is sent to the condenser 35, cooled by the outdoor unit fan 34, and received. From the tank 38 to the evaporator 31.

The liquid medium heading for the evaporator 31 is injected into the evaporator 31 from the nozzle of the expansion valve (not shown) in front of the evaporator 31 and vaporized. However, the heat of vaporization takes away the ambient heat, the evaporator 31 is cooled, and the room is cooled. As shown in FIG. 6, cold air is supplied into the refrigerator by the machine fan 32 from the outlet of the evaporator 31.

The cold air sent into the refrigerator changes its flow downward from the vicinity of the ceiling, passes through the gap of the drainboard 106, changes the flow horizontally from the vicinity of the floor surface, and finally turns upward and returns to the suction port side of the evaporator 31. .. The liquid medium that has left the evaporator 31 returns to the compressor 33 and is compressed again.

In this way, by simultaneously operating the two freezing units 30A and 30B, cold air is blown out from each outlet, circulates in the refrigerator, and the inside of the refrigerator is maintained at a constant temperature (4 ° C. ± 1 ° C.). The temperature inside the refrigerator is detected by the temperature sensor 41 provided inside the refrigerator, and is automatically controlled by the temperature sensors 42 provided near the air inlets of the two chambers 22A and 22B of the upper compartment 22. .. Further, the outside air temperature is measured by the temperature sensor 43.

In the automatic operation mode, when the outside air temperature measured by the temperature sensor 43 is lower than the set temperature (for example, 10 ° C.), one of the two refrigerating units 30A and 30B is refrigerated by the control signal from the control box 37. The unit 30B can be stopped and set to switch to the independent operation of one freezing unit 30A.

When the outside air temperature is low due to the season, it is possible to sufficiently maintain the temperature inside the refrigerator at the set temperature (4 ° C.) by operating one freezing unit 30A independently, which is an energy saving measure. When the outside air temperature becomes equal to or higher than the set temperature (for example, 10 ° C.), the stopped refrigerating unit 30B resumes operation by a signal from the control box 37, and switches to simultaneous operation of the two refrigerating units 30A and 30B.

Further, in the automatic operation mode, the temperature inside the refrigerator measured by the temperature sensor 41 becomes in-range (the temperature inside the refrigerator becomes close to the set temperature of the frozen / refrigerated cargo) during the simultaneous operation of the two freezing units 30A and 30B. It is also possible to set one refrigerating unit 30B to stop when (for example, the temperature difference becomes within 4 ° C.). In this case as well, it is an energy saving measure. When the temperature inside the oven deviates from the microwave oven state, the simultaneous operation of the two refrigerating units 30A and 30B is restarted.

Further, the automatic operation mode is set so that the two refrigerating units 30A and 30B are stopped alternately instead of stopping only one of the two refrigerating units 30A and 30B. You can also do it. In this case, there is no big difference in the operating time of the two refrigerating units 30A and 30B, and the durability of the refrigerating units 30A and 30B can be equally improved.

According to the refrigerating container of the present embodiment, since the container body is provided with two refrigerating units that can be operated simultaneously or independently in the opening opposite to the opening to which the door is attached, it is transported by sea. Even if a problem occurs in one of the freezing units, the operation of the other freezing unit makes it possible to keep the inside of the refrigerator at a predetermined temperature, causing property damage to the frozen / refrigerated cargo stored in the refrigerator. Can be prevented.

Further, according to the refrigerating container of the present embodiment, it is not necessary to always have maintenance personnel on board to avoid troubles of property damage, and it is possible to prevent an increase in transportation cost.

Thus, according to the present invention, a container freezer and a freezing container for marine transportation, which can maintain the freezing / refrigerating capacity in the refrigerator even if a trouble occurs in one refrigerating unit during marine transportation, are realized. You can now do it.

The present invention can be used as a container refrigerator for marine transportation and as a refrigerating container for marine transportation.

10 Container refrigerator 20 Casing body 22 Upper storage unit 24 Lower storage unit 26 Central partition plate 30A, 30B Refrigeration unit 31 Evaporator 32 Indoor unit fan 33 Compressor 34 Outdoor unit fan 35 Condenser 36 Piping 37 Control box 38 Receiver tank 41, 42, 43 Temperature sensor 100, 200, 300 Refrigeration container 101 Container body 102, 103 Opening 104 Door 105 Insulation 106 Snoko S Storage space

Claims (6)

The casing body of the standardized container body, which is attached to the opening opposite to the opening where the door is attached,
A container freezer for marine transportation, which is arranged side by side on the casing body and is equipped with two refrigerating units that can be operated simultaneously or independently. The lower outdoor compartment of the casing body is divided into two rooms, one room has the compressor of one refrigerating unit, the outdoor unit fan, the condenser and the control box, and the other room has the compressor of the other refrigerating unit and the outdoor. Machine fan, condenser and control box are arranged respectively
The upper indoor compartment of the casing body is divided into two rooms, one room has the evaporator and indoor unit fan of one refrigeration unit, and the other room has the evaporator and indoor unit fan of the other refrigeration unit. Has been
The container refrigerator for marine transportation according to claim 1, wherein the container refrigerator is characterized by the above. The sea transportation according to claim 1 or 2, further comprising an automatic operation mode for switching from simultaneous operation of two refrigeration units to independent operation of one refrigeration unit when the outside air temperature falls below a set temperature. For container freezer. When the difference between the internal temperature and the set temperature falls within a certain range, the automatic operation mode is set to switch from the simultaneous operation of two refrigerating units to the independent operation of one refrigerating unit. , The container freezer for marine transportation according to claim 3. Any of claims 1 to 4, wherein the automatic operation mode is set to switch the left and right refrigeration units alternately when switching from simultaneous operation of two refrigeration units to independent operation of one refrigeration unit. The freezing container for marine transportation described in item 1. Standardized, with a container body with a door attached to one opening and a refrigerator in the other opening
The refrigerator
The casing body attached to the opening of the container body and
A freezing container for marine transportation, which is arranged in parallel on the left and right sides of the casing body and is equipped with two refrigerating units that can be operated simultaneously or independently.

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