Transport refrigeration unit and transport container

Abstract

In a transport refrigeration device (10), an electrical equipment box (36) that houses a variable frequency substrate (70) is arranged on the side of a container external heat exchanger (32). The electrical equipment box (36) has an opposing plate (36e) that faces the air inflow surface (32a) of the container external heat exchanger (32). A radiator (75) is provided on the opposing plate (36e) of the electrical equipment box (36). The radiator (75) is exposed to the outside of the electrical equipment box (36) and cools a power module (71) provided on the variable frequency substrate (70).

Description

Technical Field

[0001] The present disclosure relates to a refrigeration device for transportation and a transportation container. Background Art

[0002] Patent Document 1 discloses a refrigeration device for a container. In this refrigeration device for a container, a frequency conversion box for housing a substrate is provided below a condenser formed in a flat plate shape. A heat sink is provided on the back surface of the frequency conversion box. In this container refrigeration device, the heat sink dissipates heat to the air flowing between the back surface of the frequency conversion box and the housing.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Laid-Open Publication No. 2015-127630 Summary of the Invention

[0006] -Technical Problem to be Solved by the Invention-

[0007] In the refrigeration device for a container of Patent Document 1, the electrical equipment box, that is, the frequency conversion box, is arranged on the upstream side and below the condenser. However, the installation position of the electrical equipment box in a refrigeration device for transportation such as a refrigeration device for a container is not limited to below the condenser. Moreover, the heat dissipation structure in the case where the electrical equipment box is installed at a position other than below the condenser has not been studied yet.

[0008] An object of the present disclosure is to provide a heat dissipation structure in a refrigeration device for transportation when a box for housing a frequency conversion substrate is arranged on the side of a condenser.

[0009] -Technical Solution for Solving the Technical Problem-

[0010] A first aspect of the present disclosure is directed to a refrigeration device 10 for transportation, characterized by including: a condenser 32, and a box 36. The box 36 is arranged on the side of the condenser 32 and houses a frequency conversion substrate 70. The box 36 has a relative plate 36e facing an air inlet surface 32a of the condenser 32. The refrigeration device for transportation further includes a radiator 75. The radiator 75 is provided on the relative plate 36e and exposed to the outside of the box 36 to cool heat generating components 71 provided on the frequency conversion substrate 70.

[0011] In a first aspect, a radiator 75 is provided on opposite plates 36e of a box 36 disposed laterally of a condenser 32. Heat generated in heat-generating components 71 of a variable-frequency substrate 70 housed in the box 36 is conducted to the radiator 75 and dissipated. Therefore, according to this aspect, when the box 36 housing the variable-frequency substrate 70 is disposed laterally of the condenser 32, heat generated in the heat-generating components 71 of the variable-frequency substrate 70 can be released into the air, suppressing excessive temperature rise of the heat-generating components 71.

[0012] Based on the above first aspect, a second aspect of the present disclosure is characterized in that: the refrigeration device 10 for transportation further includes a pipe 80, and the pipe 80 forms an air passage 85 for arranging the radiator 75.

[0013] In the second aspect, heat that has been conducted from the heat-generating components 71 of the variable-frequency substrate 70 to the radiator 75 is released into the air flowing in the air passage 85 formed by the pipe 80.

[0014] Based on the above second aspect, a third aspect of the present disclosure is characterized in that: an air inlet 83 of the pipe 80 is open downward.

[0015] In the third aspect, since the air inlet 83 of the pipe 80 faces downward, it is difficult for rainwater or seawater, etc. to enter the air passage 85 inside the pipe 80 from the air inlet 83.

[0016] Based on the above second or third aspect, a fourth aspect of the present disclosure is characterized in that: an air outlet 84 of the pipe 80 is open toward an air inflow surface 32a of the condenser 32.

[0017] In the fourth aspect, the air that has absorbed heat from the radiator 75 during the time it flows in the air passage 85 inside the pipe 80 flows from the air outlet 84 toward the air inflow surface 32a of the condenser 32.

[0018] Based on any one of the above second to fourth aspects, a fifth aspect of the present disclosure is characterized in that: the pipe 80 includes a first portion 81 and a second portion 82, the first portion 81 has an air inlet 83 and extends in a specified direction, and the second portion 82 extends from the first portion 81 and extends in a direction intersecting the specified direction, and has an air outlet 84.

[0019] In the fifth aspect, the air that has flowed into the air passage 85 from the air inlet 83 sequentially passes through the first portion 81 and the second portion 82 of the pipe 80, and flows out of the air passage 85 through the air outlet 84.

[0020] Based on any one of the second to fifth aspects above, the sixth aspect of the present disclosure is characterized in that: the radiator 75 includes a base body 76 and a plurality of fins 78. The base body 76 is plate-shaped and has a mounting surface 77 in contact with the heat-generating component 71. The fins 78 protrude from a surface of the base body 76 different from the mounting surface 77, and the air passage 85 formed by the pipe 80 is divided into a plurality of flow paths 86 by the fins 78.

[0021] In the sixth aspect, the air passage 85 in the pipe 80 is divided into a plurality of flow paths 86 by the fins 78 of the radiator 75. The air that has flowed into the air passage 85 separately flows into the plurality of flow paths 86 and contacts the fins 78.

[0022] Based on the sixth aspect above, the seventh aspect of the present disclosure is characterized in that: the fins 78 of the radiator 75 extend in the vertical direction.

[0023] In the invention of the seventh aspect, the air passage 85 in the pipe 80 is divided into a plurality of flow paths 86 by the fins 78 extending in the vertical direction.

[0024] Based on any one of the first to seventh aspects above, the eighth aspect of the present disclosure is characterized in that: the transport refrigeration device 10 further includes a control substrate 72, and the control substrate 72 is housed in the box 36 and is used to control the transport refrigeration device.

[0025] In the eighth aspect, the control substrate 72 and the frequency conversion substrate 70 are housed in the box 36 together.

[0026] Based on the eighth aspect above, the ninth aspect of the present disclosure is characterized in that: the transport refrigeration device further includes a partition plate 90. The partition plate 90 is provided in the box 36 to divide the space 37a for housing the frequency conversion substrate 70 and the space 37b for housing the control substrate 72 from each other, and suppresses the propagation of noise from the frequency conversion substrate 70 to the control substrate 72.

[0027] In the ninth aspect, in the internal space of the box 36, the space 37a for housing the frequency conversion substrate 70 and the space 37b for housing the control substrate 72 are divided by the partition plate 90. The partition plate 90 suppresses the propagation of noise from the frequency conversion substrate 70 to the control substrate 72. Therefore, the control substrate 72 can work properly, and the frequency conversion substrate 70 and the control substrate 72 can be housed in an electrical equipment box 36.

[0028] Based on the ninth aspect above, the tenth aspect of the present disclosure is characterized in that: through holes 93 are formed both above and below the partition plate 90.

[0029] In a tenth aspect, the air in the box 36 moves between two spaces 37a and 37b divided by the partition plate 90 through the through hole 93 of the partition plate 90.

[0030] Based on any one of the first to tenth aspects described above, an eleventh aspect of the present disclosure is characterized in that: the transport refrigeration device 10 further includes a reactor 74, the reactor 74 is housed in the box 36, and is arranged above the frequency conversion substrate 70.

[0031] In the eleventh aspect, in the internal space of the box 36, a reactor 74 is provided above the frequency conversion substrate 70.

[0032] Based on any one of the first to eleventh aspects described above, a twelfth aspect of the present disclosure is characterized in that: a refrigerant outlet 137 is provided at one end of the condenser 32, and the air that has passed through the radiator 75 passes through a portion of the condenser 32 at the relatively other end.

[0033] In the twelfth aspect, the air that has passed through the radiator 75 passes through a portion of the condenser 32 that is relatively far from the refrigerant outlet 137. Therefore, the temperature of the refrigerant flowing out from the refrigerant outlet 137 of the condenser 32 can be suppressed to a lower level.

[0034] Based on any one of the first to twelfth aspects described above, a thirteenth aspect of the present disclosure is characterized in that: the transport refrigeration device further includes a fork slot 150, the fork slot 150 is provided above the box 36 for inserting a fork for lifting the transport refrigeration device into the fork slot 150, and the space S23 between the box 36 and the fork slot 150 communicates with the internal space 153 of the fork slot 150 and the upstream side space S21 of the condenser 32.

[0035] In the thirteenth aspect, the air that has passed through the fork slot 150 flows toward the condenser 32. Therefore, it is easy to ensure the flow rate of the air flowing toward the condenser 32.

[0036] A fourteenth aspect of the present disclosure is directed to a transport container 1, and is characterized in that: the transport container 1 includes the transport refrigeration device 10 according to any one of the first to thirteenth aspects described above, and a container main body 2.

[0037] In the fourteenth aspect, the transport refrigeration device 10 and the container main body 2 are provided in the transport container 1. Description of the Drawings

[0038] Figure 1 is a perspective view of a transport container according to an embodiment as viewed from the front side;

[0039] Figure 2is a longitudinal sectional view schematically showing the internal structure of the transportation container according to the embodiment;

[0040] Figure 3 is a piping system diagram of the refrigerant circuit of the transport refrigeration device according to the embodiment;

[0041] Figure 4 is a front view of the main part of the transport refrigeration device according to the embodiment, showing the state after the removal of the container external heat exchanger;

[0042] Figure 5 is a three-dimensional schematic diagram of the fork slot provided on the transport refrigeration device according to the embodiment;

[0043] Figure 6 shows the electrical equipment box along Figure 7 a cross-sectional view of the cross-section taken along line VI-VI;

[0044] Figure 7 shows the electrical equipment box along Figure 6 a cross-sectional view of the cross-section taken along line VII-VII;

[0045] Figure 8 shows the electrical equipment box along Figure 6 a cross-sectional view of the main part of the cross-section taken along line VII-VII. Detailed Embodiment

[0046] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that the following embodiments are only preferred examples in essence and are not intended to limit the present invention, its application objects, or its scope of use.

[0047] (Embodiment)

[0048] The present disclosure is a transportation container 1. As Figure 1 shown, the transportation container 1 includes a container main body 2 and a transport refrigeration device 10 provided on the container main body 2. The transportation container 1 is used for maritime transportation. The transportation container 1 is transported by a maritime transportation means such as a ship. It should be noted that in the following description, unless otherwise specified, "up", "down", "left", "right", "front", and "rear" all refer to the directions when observing the transport refrigeration device 10 from the front.

[0049] - Container Main Body -

[0050] The container main body 2 is formed into a hollow box shape. The container main body 2 is formed to have a relatively long lateral length. An opening is formed at one end in the length direction of the container main body 2. The opening of the container main body 2 is sealed by the transport refrigeration device 10. A storage space 5 for storing the items to be transported is formed inside the container main body 2. The items to be transported are stored in the storage space 5. The temperature of the air (also referred to as the air inside the container) in the storage space 5 is adjusted by the transport refrigeration device 10.

[0051] -Transport Refrigeration Device-

[0052] The transport refrigeration device 10 is installed at the opening of the container main body 2. The transport refrigeration device 10 includes a housing 11 and a refrigerant circuit C.

[0053] 〈Housing〉

[0054] As Figure 2 schematically shown, the housing 11 includes a partition wall 12 and a partition plate 15.

[0055] An inner-container flow path 20 is formed inside the partition wall 12. An outer-container chamber S is formed outside the partition wall 12. The outer-container chamber S corresponds to the storage space. The inner-container flow path 20 and the outer-container chamber S are separated by the partition wall 12.

[0056] The partition wall 12 includes a container outer wall 13 and a container inner wall 14. The container outer wall 13 is located outside the container main body 2. The container inner wall 14 is located inside the container main body 2. The container outer wall 13 and the container inner wall 14 are made of, for example, aluminum alloy.

[0057] The container outer wall 13 closes the opening of the container main body 2. The container outer wall 13 is installed at the peripheral portion of the opening of the container main body 2. The lower part of the container outer wall 13 bulges toward the inside of the container main body 2. The outer-container chamber S is formed inside the bulging container outer wall 13.

[0058] The container inner wall 14 faces the container outer wall 13. The container inner wall 14 has a shape formed along the container outer wall 13. The container inner wall 14 is arranged with a gap between it and the container outer wall 13. A heat insulating material 16 is provided between the container inner wall 14 and the container outer wall 13.

[0059] The partition plate 15 is arranged at a position closer to the inside of the container main body 2 than the container inner wall 14. The inner-container flow path 20 is formed between the partition wall 12 and the partition plate 15. An inlet 21 is formed between the upper end of the partition plate 15 and the top plate of the container main body 2. An outlet 22 is formed between the lower end of the partition plate 15 and the lower end of the partition wall 12. The inner-container flow path 20 is formed from the inlet 21 to the outlet 22.

[0060] The flow path 20 inside the container includes an upper flow path 23 and a lower flow path 24. The upper flow path 23 is located at the upper part of the flow path 20 inside the container. The lower flow path 24 is located at the lower part of the flow path 20 inside the container. The lower flow path 24 is located at a position corresponding to the bulging portion of the partition wall 12.

[0061] 〈Elements and Components of the Refrigerant Circuit〉

[0062] The refrigerant circuit C has refrigerant filled therein. The refrigerant circuit C performs a vapor compression refrigeration cycle by circulating the refrigerant. The refrigerant circuit C includes a compressor 31, an external heat exchanger 32 of the container, an expansion valve 33, an internal heat exchanger 60 of the container, and refrigerant pipes connecting these components.

[0063] The compressor 31 is arranged at a position biased to the right in the first space S1 corresponding to the lower part of the external chamber S of the container. The compressor 31 sucks in low-pressure refrigerant and compresses it. The compressor 31 ejects the compressed refrigerant as high-pressure refrigerant.

[0064] The external heat exchanger 32 of the container is arranged at a position biased to the left in the second space S2 corresponding to the upper part of the external chamber S of the container. The external heat exchanger 32 of the container is a fin-tube heat exchanger. The external heat exchanger 32 of the container is a so-called four-sided heat exchanger. The shape of the external heat exchanger 32 of the container is approximately rectangular cylindrical. The external heat exchanger 32 of the container functions as a condenser or a radiator.

[0065] The internal heat exchanger 60 of the container is arranged in the flow path 20 inside the container. The internal heat exchanger 60 of the container is supported between the partition wall 12 and the partition plate 15. The internal heat exchanger 60 of the container is a fin-tube heat exchanger. The internal heat exchanger 60 of the container functions as an evaporator.

[0066] 〈External Fan of the Container〉

[0067] The refrigeration device 10 for transportation includes an external fan 34 of the container. The external fan 34 of the container is arranged in the second space S2 of the external chamber S of the container. The external fan 34 of the container is arranged inside the four heat exchange parts of the external heat exchanger 32 of the container. The external fan 34 of the container is a propeller fan.

[0068] When the external fan 34 of the container operates, the external air of the container flows from the outside to the inside of the external heat exchanger 32. The air inside the external heat exchanger 32 is blown out towards the outside of the housing 11.

[0069] 〈Internal Fan of the Container〉

[0070] The refrigeration device 10 for transportation includes two in-container fans 35. The in-container fans 35 are arranged in the upper flow path 23 of the in-container flow path 20. The in-container fans 35 are arranged on the upper side of the in-container heat exchanger 60. The in-container fans 35 are arranged at a position upstream of the in-container heat exchanger 60 with respect to the air flow. The in-container fans 35 are propeller fans. The number of the in-container fans 35 may also be one or more than three.

[0071] When the in-container fans 35 operate, the in-container air in the storage space 5 flows into the upper flow path 23 of the in-container flow path 20 from the inlet 21. The air in the upper flow path 23 of the in-container flow path 20 flows through the in-container heat exchanger 60 and a heater H (described later) and then flows in the lower flow path 24. The air in the lower flow path 24 flows out from the outlet 22 toward the storage space 5.

[0072] 〈Heater〉

[0073] The refrigeration device 10 for transportation includes a heater H. The heater H is arranged on the lower side of the in-container heat exchanger 60. The heater H is installed at the lower part of the in-container heat exchanger 60. When the heater H operates, the in-container heat exchanger 60 is heated. The frost attached to the in-container heat exchanger 60 melts by the heat of the heater H. The heater H is used for defrosting the in-container heat exchanger 60.

[0074] 〈Electrical equipment box〉

[0075] As Figure 1 shown, the refrigeration device 10 for transportation has an electrical equipment box 36. The electrical equipment box 36 is arranged in the second space S2 of the outer chamber S of the container. Electrical components such as an inverter board 70, a control board 72, a relay board 73, and a reactor 74 are housed inside the electrical equipment box 36, which will be described in detail later.

[0076] -Details of the refrigerant circuit-

[0077] Refer to Figure 3 for a detailed description of the refrigerant circuit C. In Figure 3 , the part surrounded by a dashed line represents the inside of the container, and the other parts represent the outside of the container.

[0078] The refrigerant circuit C has a compressor 31, an out-container heat exchanger 32, an expansion valve 33, and an in-container heat exchanger 60 as main components. The expansion valve 33 is an electronic expansion valve whose opening degree can be adjusted.

[0079] The refrigerant circuit C has an ejection pipe 41 and a suction pipe 42. One end of the ejection pipe 41 is connected to the ejection part of the compressor 31. The other end of the ejection pipe 41 is connected to the gas end of the container external heat exchanger 32. One end of the suction pipe 42 is connected to the suction part of the compressor 31. The other end of the suction pipe 42 is connected to the gas end of the container internal heat exchanger 60.

[0080] The refrigerant circuit C has a liquid pipe 43, a liquid receiver 44, a cooling heat exchanger 45, a first switching valve 46, a communication pipe 47, a second switching valve 48, an injection pipe 49, and an injection valve 50.

[0081] One end of the liquid pipe 43 is connected to the liquid end of the container external heat exchanger 32. The other end of the liquid pipe 43 is connected to the liquid end of the container internal heat exchanger 60. The liquid receiver 44 is provided on the liquid pipe 43. The liquid receiver 44 is a container for storing refrigerant.

[0082] The cooling heat exchanger 45 has a first flow path 45a and a second flow path 45b. The cooling heat exchanger 45 causes the refrigerant in the first flow path 45a and the refrigerant in the second flow path 45b to perform heat exchange. The cooling heat exchanger 45 is, for example, a plate heat exchanger. The first flow path 45a is a part of the liquid pipe 43. The second flow path 45b is a part of the injection pipe 49. The cooling heat exchanger 45 cools the refrigerant flowing in the liquid pipe 43.

[0083] The first switching valve 46 is provided in the part of the liquid pipe 43 between the liquid receiver 44 and the first flow path 45a. The first switching valve 46 is an electromagnetic valve that can be opened and closed.

[0084] The communication pipe 47 connects the high-pressure pipe and the low-pressure pipe of the refrigerant circuit C. One end of the communication pipe 47 is connected to the ejection pipe 41. The other end of the communication pipe 47 is connected to the part between the expansion valve 33 in the liquid pipe 43 and the container internal heat exchanger 60.

[0085] The second switching valve 48 is provided on the communication pipe 47. The second switching valve 48 is an electromagnetic valve that can be opened and closed.

[0086] The injection pipe 49 introduces refrigerant into the intermediate pressure part of the compressor 31. One end of the injection pipe 49 is connected to the part of the liquid pipe 43 between the liquid receiver 44 and the first flow path 45a. The other end of the injection pipe 49 is connected to the intermediate pressure part of the compressor 31. The pressure of the intermediate pressure part, that is, the intermediate pressure, is the pressure between the suction pressure and the ejection pressure of the compressor 31.

[0087] The injection valve 50 is provided on the upstream side part of the second flow path 45b in the injection pipe 49. The injection valve 50 is an electronic expansion valve whose opening degree can be adjusted.

[0088] -Operation of the refrigeration device for transportation-

[0089] The basic operation of the transport refrigeration device 10 will be described. When the transport refrigeration device 10 operates, the compressor 31, the outside-container fan 34, and the inside-container fan 35 operate. The first switching valve 46 is opened. The second switching valve 48 is closed. The opening degree of the expansion valve 33 is adjusted. The opening degree of the injection valve 50 is adjusted.

[0090] The refrigerant compressed in the compressor 31 flows through the outside-container heat exchanger 32. In the outside-container heat exchanger 32, the refrigerant releases heat to the outside-container air and condenses. The condensed refrigerant passes through the liquid receiver 44. A part of the refrigerant that has passed through the liquid receiver 44 flows through the first flow path 45a of the cooling heat exchanger 45. The remaining part of the refrigerant that has passed through the liquid receiver 44 flows through the injection pipe 49 and is decompressed to an intermediate pressure in the injection valve 50. The decompressed refrigerant is introduced into the intermediate-pressure part of the compressor 31.

[0091] In the cooling heat exchanger 45, the refrigerant in the second flow path 45b absorbs heat from the refrigerant in the first flow path 45a and evaporates. As a result, the refrigerant in the first flow path 45a is cooled. In other words, the degree of subcooling of the refrigerant flowing in the first flow path 45a increases.

[0092] The refrigerant cooled in the cooling heat exchanger 45 is decompressed to a low pressure in the expansion valve 33. The decompressed refrigerant flows through the inside-container heat exchanger 60. In the inside-container heat exchanger 60, the refrigerant absorbs heat from the inside-container air and evaporates. As a result, the inside-container heat exchanger 60 cools the inside-container air. The evaporated refrigerant is sucked into the compressor 31 and compressed again.

[0093] The inside-container air in the container main body 2 circulates in the storage space 5 and the inside-container flow path 20. In the inside-container flow path 20, the inside-container air is cooled by the inside-container heat exchanger 60. In this way, the inside-container air in the storage space 5 can be cooled, and the inside-container air can be adjusted to a specified temperature.

[0094] - Shape and arrangement of the outside-container heat exchanger and the electrical equipment box -

[0095] As Figure 4 shown, the outside-container heat exchanger 32 and the electrical equipment box 36 are provided in the second space S2 of the outside-container chamber S. The outside-container heat exchanger 32 is provided in the left-biased part of the second space S2, and the electrical equipment box 36 is provided in the right-biased part of the second space S2. In this way, the electrical equipment box 36 is located laterally to the outside-container heat exchanger 32.

[0096] <Shape and arrangement of the outside-container heat exchanger>

[0097] The container external heat exchanger 32 is formed in a rectangular cylindrical shape. Four flat portions 101 to 104 and three bent portions 111 to 113 are formed on the container external heat exchanger 32. Each of the flat portions 101 to 104 is a planar part. Each of the bent portions 111 to 113 is a part that is bent into a quarter circular arc shape when viewed from the front.

[0098] The first flat portion 101 is located at the lowermost part of the container external heat exchanger 32 and extends in an approximately horizontal direction. The first bent portion 111 continues from the left end of the first flat portion 101 and bends upward. The third flat portion 103 continues from the upper end of the first bent portion 111 and extends upward. The second bent portion 112 continues from the upper end of the third flat portion 103 and bends to the right. The second flat portion 102 continues from the right end of the second bent portion 112 and extends to the right. The third bent portion 113 continues from the right end of the second flat portion 102 and bends downward. The fourth flat portion 104 continues from the lower end of the third bent portion 113 and extends downward. In the container external heat exchanger 32, the first flat portion 101 faces the second flat portion 102, and the third flat portion 103 faces the fourth flat portion 104.

[0099] The container external heat exchanger 32 is fixed to the partition wall 12 of the housing 11. The container external heat exchanger 32 is mounted on the housing 11 in such a manner that the first flat portion 101 and the second flat portion 102 extend in an approximately horizontal direction, and the third flat portion 103 and the fourth flat portion 104 extend in an approximately vertical direction.

[0100] In the container external heat exchanger 32, a liquid side header 137 and a gas side header 136 are provided at the right end portion of the first flat portion 101. The liquid side header 137 and the gas side header 136 are connected to the refrigerant pipe 120 of the container external heat exchanger 32. In the container external heat exchanger 32 that functions as a condenser or a radiator, the refrigerant flows into the refrigerant pipe 120 from the gas side header 136, and then flows out from the refrigerant pipe 120 to the liquid side header 137. The liquid side header 137 is a refrigerant outlet.

[0101] The outward-facing surface of the container external heat exchanger 32 is an air inlet surface 32a, and the inward-facing surface is an air outlet surface 32b. The air inlet surface 32a and the air outlet surface 32b are imaginary surfaces formed by a plurality of fins arranged. In the container external heat exchanger 32, air flows from the air inlet surface 32a toward the air outlet surface 32b.

[0102] In the second space S2 of the outer chamber S of the container, the part located outside the container outer heat exchanger 32 is the primary side space S21, and the part located inside the container outer heat exchanger 32 is the secondary side space S22. The primary side space S21 is the upstream side space of the container outer heat exchanger 32. The secondary side space S22 is the downstream side space of the container outer heat exchanger 32.

[0103] 〈Shape and Arrangement of Electrical Equipment Box〉

[0104] The electrical equipment box 36 is formed as a box in the shape of a rectangular parallelepiped. The electrical equipment box 36 includes a front wall 36a, a rear wall 36b, an upper wall 36c, a bottom wall 36d, a left side wall 36e, and a right side wall 36f.

[0105] An operation panel 65 is arranged on the front wall 36a. The operation panel 65 includes operation buttons 66 for an operator to input switching instructions such as starting / stopping the operation of the transport refrigeration device 10, and a display screen 67 for displaying the operation state of the transport refrigeration device 10.

[0106] The electrical equipment box 36 is installed on the housing 11 with the front wall 36a extending in an approximately vertical direction. For the electrical equipment box 36 installed on the housing 11, its left side wall 36e faces the fourth flat part 104 of the container outer heat exchanger 32. The left side wall 36e of the electrical equipment box 36 is an opposing plate facing the air inflow surface 32a of the container outer heat exchanger 32.

[0107] -Fork Slot-

[0108] As Figure 4 shown, a pair of fork slots 150 are provided on the housing 11. The fork slots 150 are components into which the forks of a forklift or the like are inserted when lifting the transport refrigeration device 10. One fork slot 150 is provided above the container outer heat exchanger 32 and the other is provided above the electrical equipment box 36.

[0109] As Figure 5 shown, the fork slot 150 is formed as a rectangular tubular shape. Both ends of the fork slot 150 are open ends. One open end of the fork slot 150 becomes an insertion port 151. A communication hole 152 is formed in the bottom wall portion of the fork slot.

[0110] As Figure 4As shown, the fork groove 150 is mounted on the housing 11 in such a manner that the long side of the insertion port 151 is along an approximately horizontal direction and the insertion port 151 is exposed from the front surface of the housing 11. The internal space 153 of the fork groove 150 communicates with the primary side space S21 of the second space S2 through the communication hole 152. In particular, the internal space 153 of the fork groove 150 located above the upper wall 36c of the electrical equipment box 36 communicates with the primary side space S21 through the communication hole 152 and the part of the second space S2 located above the electrical equipment box 36.

[0111] - Detailed Structure of Electrical Equipment Box -

[0112] Proper reference Figures 6 to 8 The detailed structure of the electrical equipment box 36 will be described. As described above, electrical components such as the frequency conversion substrate 70, the control substrate 72, the relay substrate 73, and the reactor 74 are housed inside the electrical equipment box 36. A radiator 75, a pipe 80, and a partition plate 90 are provided on the electrical equipment box 36.

[0113] 〈Partition Plate〉

[0114] The partition plate 90 is a component for dividing the internal space of the electrical equipment box 36 into left and right parts. The internal space of the electrical equipment box 36 is divided into a first chamber 37a on the left side of the partition plate 90 and a second chamber 37b on the right side of the partition plate 90 (refer to Figure 6 ).

[0115] The partition plate 90 is a plate-like component bent into a stepped shape when viewed from above (refer to Figure 8 ). The height of the partition plate 90 is slightly shorter than the distance from the bottom wall 36d to the upper wall 36c of the electrical equipment box 36. The material of the partition plate 90 is metal (such as steel or stainless steel, etc.). The partition plate 90 has the function of shielding the noise (electromagnetic wave) generated on the frequency conversion substrate 70.

[0116] Specifically, the partition plate 90 includes two front-facing plate portions 91 and two side-facing plate portions 92 (refer to Figure 8 ). Each front-facing plate portion 91 and each side-facing plate portion 92 are respectively formed into a rectangular plate shape. Each front-facing plate portion 91 and each side-facing plate portion 92 are arranged with their long sides along the vertical direction. The front-facing plate portions 91 and the side-facing plate portions 92 are alternately arranged in the partition plate 90. Adjacent front-facing plate portions 91 and side-facing plate portions 92 share one of their long sides.

[0117] As Figure 7As shown, a plurality of ventilation holes 93 are formed in each lateral plate portion 92 of the partition plate 90. Each ventilation hole 93 is a through hole that penetrates the partition plate 90 in the thickness direction. A plurality of ventilation holes 93 are formed in the upper and lower end regions of the lateral plate portion 92. In each lateral plate portion 92, the number of ventilation holes 93 formed in the lower end region is larger than the number of ventilation holes 93 formed in the upper end region. In each lateral plate portion 92, ventilation holes 93 are formed only in the upper and lower end regions. In other words, in each lateral plate portion 92, the middle region in the vertical direction is a shielding portion where no ventilation holes 93 are formed.

[0118] 〈Radiator〉

[0119] The radiator 75 is a component for cooling the power module 71 of the inverter substrate 70.

[0120] As Figure 6 and Figure 8 shown, the radiator 75 includes a bottom plate 76 and a plurality of fins 78. The bottom plate 76 and the fins 78 are integrally formed. The material of the radiator 75 is metal (such as aluminum alloy).

[0121] The bottom plate 76 is a rectangular plate-shaped part. The bottom plate 76 is a base. Each fin 78 is formed in a rectangular plate shape. Each fin 78 protrudes from the surface of the bottom plate 76. Each long side of each fin 78 is along the long side of the bottom plate 76, and each short side of each fin 78 is approximately perpendicular to the surface of the bottom plate 76. A plurality of fins 78 are arranged in the short side direction of the bottom plate 76 in the radiator 75, with a predetermined interval therebetween. The back surface of the bottom plate 76 (the surface opposite to the fin 78) is a mounting surface 77 that contacts the power module 71.

[0122] The radiator 75 is mounted on the left side wall 36e of the electrical equipment box 36. The radiator 75 is provided on the left side wall 36e of the electrical equipment box 36. The radiator 75 is mounted on the left side wall 36e with the long side of the bottom plate 76 along the vertical direction. Specifically, the radiator 75 is embedded in an opening formed in the left side wall 36e of the electrical equipment box 36. The bottom plate 76 of the radiator 75 covers the opening formed in the left side wall 36e from the inside of the electrical equipment box 36. The fins 78 of the radiator 75 protrude outward from the opening formed in the left side wall 36e and are exposed to the outside of the electrical equipment box 36. In the state where the radiator 75 is mounted on the electrical equipment box 36, each fin 78 is in a posture where the long side extends in the vertical direction.

[0123] 〈Pipe〉

[0124] The pipe 80 is a component for guiding air to the fins 78 of the radiator 75.

[0125] As Figure 6As shown, the duct 80 is formed in the shape of an inverted "L" - shaped cover. The duct 80 is installed on the outer surface of the left - hand side wall 36e of the electrical equipment box 36. The duct 80 is provided on the outer surface of the left - hand side wall 36e of the electrical equipment box 36. The duct 80 forms an air passage 85 between it and the left - hand side wall 36e. The duct 80 covers the fins 78 of the radiator 75 that are exposed outside the electrical equipment box 36. Thus, the fins 78 of the radiator 75 are in a state of being housed in the air passage 85 formed by the duct 80.

[0126] The duct 80 includes a first part 81 extending in the vertical direction and a second part 82 extending laterally from the first part 81. The first part 81 is formed in the shape of a vertically - extending passage and covers the fins 78 of the radiator 75. The lower end of the first part 81 forms an air inlet 83 for introducing air into the air passage 85. The second part 82 is formed in the shape of a cylinder extending laterally ( Figure 6 to the left in it). The open end at the protruding end of the second part 82 forms an air outlet 84 for discharging air from the air passage 85. As Figure 4 shown, this air outlet 84 faces the air - inflow surface 32a of the fourth flat part 104 of the container external heat exchanger 32.

[0127] As Figure 8 shown, a sheet - like sealing material 87 is pasted on the inner surface of the first part 81 of the duct 80. The material of the sealing material 87 is, for example, a soft foamed resin. The sealing material 87 contacts the protruding ends of the fins 78 of the radiator 75 and blocks the gap between the protruding ends of the fins 78 and the inner surface of the first part 81. The air passage 85 inside the duct 80 is divided into multiple flow paths 86 by the fins 78 whose protruding ends contact the sealing material 87. The multiple flow paths 86 are respectively surrounded by adjacent fins 78, the bottom plate 76, and the sealing material 87.

[0128] 〈Electrical components〉

[0129] As Figure 6 and Figure 8 shown, electrical components, namely, an inverter substrate 70, a control substrate 72, a relay substrate 73, and a reactor 74, are housed in the electrical equipment box 36. The inverter substrate 70 and the reactor 74 are arranged in the first chamber 37a. The control substrate 72 and the relay substrate 73 are arranged in the second chamber 37b.

[0130] On the inverter substrate 70, a heat - generating component, namely, a power module 71, is provided. The power module 71 supplies alternating current to the motor of the compressor 31. If the output frequency of the power module 71 is changed, the rotational speed of the compressor 31 will change. As a result, the refrigerating capacity generated by the refrigeration cycle of the refrigerant circuit C changes.

[0131] The variable-frequency substrate 70 is arranged to face the mounting surface 77 of the bottom plate 76 of the radiator 75. The power module 71 of the variable-frequency substrate 70 is thermally connected to the bottom plate 76 of the radiator 75. In the present embodiment, the power module 71 is in contact with the mounting surface 77 of the bottom plate 76 of the radiator 75. The heat generated in the power module 71 is conducted to the radiator 75.

[0132] Two reactors 74 are mounted on the left side wall 36e of the electrical equipment box 36, and one reactor 74 is mounted on the rear wall 36b of the electrical equipment box 36. These three reactors 74 are arranged at a position higher than the variable-frequency substrate 70. These three reactors 74 are also located laterally of the ventilation hole 93 formed in the upper end region of the partition plate 90.

[0133] The control substrate 72 is mounted on the right side wall of the electrical equipment box 36. The control substrate 72 is arranged at the position farthest from the variable-frequency substrate 70. The relay substrate 73 is mounted on the rear wall of the electrical equipment box 36.

[0134] -Flow condition of cooling air-

[0135] The flow condition of the air for cooling the variable-frequency substrate 70 will be described.

[0136] If the container outer fan 34 operates, the outside air of the container flows into the primary side space S21 of the second space S2 and flows toward the container outer heat exchanger 32. A part of the outside air of the container that has flowed into the primary side space S21 flows into the air passage 85 in the pipe 80.

[0137] The air flowing into the air passage 85 from the air inlet 83 of the pipe 80 separately flows into a plurality of flow paths 86 divided by the fins 78 of the radiator 75 and flows upward in each flow path 86. The air flowing in each flow path 86 absorbs heat from the radiator 75. The heat conducted from the power module 71 to the radiator 75 is released into the air flowing in the air passage 85. As a result, the temperature of the power module 71 can be prevented from rising excessively.

[0138] The air that has absorbed heat from the radiator 75 flows out of the air passage 85 through the air outlet 84. The air outlet 84 of the pipe 80 faces the fourth flat portion 104 of the container outer heat exchanger 32. Therefore, the air that has absorbed heat from the radiator 75 flows from the air outlet 84 toward the fourth flat portion 104 of the container outer heat exchanger 32 and passes through the fourth flat portion 104 from the air inflow surface 32a toward the air outflow surface 32b.

[0139] -Flow condition of air inside the electrical equipment box-

[0140] The flow condition of the air inside the electrical equipment box 36 will be described.

[0141] In the electrical equipment box 36, the frequency conversion substrate 70 and the reactor 74, which have a relatively high temperature during operation, are both housed in the first chamber 37a, and the control substrate 72 and the relay substrate 73, which do not have a relatively high temperature during operation, are both housed in the second chamber 37b. Therefore, during the operation of the transport refrigeration device 10, the temperature of the air in the first chamber 37a is generally higher than the temperature of the air in the second chamber 37b.

[0142] On the other hand, on the lateral plate portion 92 of the partition plate 90, ventilation holes 93 are formed only in its upper end region and lower end region. Therefore, an air flow that circulates between the first chamber 37a and the second chamber 37b is generated inside the electrical equipment box 36.

[0143] Specifically, the air in the first chamber 37a is heated by the frequency conversion substrate 70 and the reactor 74. The heated air in the first chamber 37a flows upward and flows out toward the second chamber 37b through the ventilation hole 93 formed at the upper end of the partition plate 90. The temperature of the air in the second chamber 37b is lower than the temperature of the air in the first chamber 37a. Therefore, when an upward air flow is generated in the first chamber 37a, the air in the second chamber 37b flows into the first chamber 37a through the ventilation hole 93 formed at the lower end of the partition plate 90. As a result, an excessive rise in the temperature of the air in the first chamber 37a can be suppressed.

[0144] In the first chamber 37a, a reactor 74 is provided above the frequency conversion substrate 70. The temperature of the frequency conversion substrate 70 during operation and the temperature of the reactor 74 during operation are both approximately 60°C to 70°C. The temperature of the reactor 74 during operation is slightly higher than the temperature of the frequency conversion substrate 70 during operation.

[0145] In this way, in the first chamber 37a, the reactor 74, whose temperature is higher than that of the frequency conversion substrate 70, is provided above the frequency conversion substrate 70. On the other hand, as described above, an upward air flow is generated in the first chamber 37a. Therefore, the heat generated in the reactor 74 is difficult to transfer to the frequency conversion substrate 70, and thus an increase in the temperature of the frequency conversion substrate 70 can be suppressed.

[0146] - Feature (1) of the embodiment -

[0147] In the transport refrigeration device 10 of the present embodiment, an electrical equipment box 36 is arranged laterally to the container external heat exchanger 32. A frequency conversion substrate 70 is housed in the electrical equipment box 36. The left side wall 36e of the electrical equipment box 36 faces the air inflow surface 32a of the container external heat exchanger 32. A radiator 75 is provided on the left side wall 36e of the electrical equipment box 36. The heat generated in the power module 71 of the frequency conversion substrate 70 is conducted to the radiator 75 for heat dissipation.

[0148] According to the present embodiment, when the electrical equipment box 36 accommodating the inverter substrate 70 is arranged on the side of the container external heat exchanger 32, the heat generated in the power module 71 of the inverter substrate 70 can be released into the air, thereby suppressing excessive temperature rise of the power module 71. Therefore, according to the present embodiment, a heat dissipation structure can be provided when the electrical equipment box 36 accommodating the inverter substrate 70 is arranged on the side of the container external heat exchanger 32 in the transport refrigeration device 10.

[0149] - Feature (2) of the embodiment -

[0150] The transport refrigeration device 10 of the present embodiment includes a duct 80. The duct 80 forms an air passage 85 for arranging the radiator 75. The heat conducted from the power module 71 of the inverter substrate 70 to the radiator 75 is released into the air flowing in the air passage 85 formed by the duct 80.

[0151] - Feature (3) of the embodiment -

[0152] In the transport refrigeration device 10 of the present embodiment, the air inlet 83 of the duct 80 opens downward. Therefore, it is difficult for rainwater or seawater to enter the air passage 85 in the duct 80 from the air inlet 83. As a result, corrosion of the radiator 75 provided in the air passage 85 can be suppressed, thereby ensuring the reliability of the transport refrigeration device 10.

[0153] - Feature (4) of the embodiment -

[0154] In the transport refrigeration device 10 of the present embodiment, the air outlet 84 of the duct 80 opens toward the air inlet surface 32a of the container external heat exchanger 32. Therefore, the air that has absorbed heat from the radiator 75 during the time it flows in the air passage 85 in the duct 80 flows from the air outlet 84 toward the air inlet surface 32a of the container external heat exchanger 32.

[0155] - Feature (5) of the embodiment -

[0156] In the transport refrigeration device 10 of the present embodiment, the duct 80 includes a first portion 81 and a second portion 82. The first portion 81 has an air inlet 83 and extends in the vertical direction. The second portion 82 is formed by continuing from the first portion 81, extends laterally from the first portion 81, and has an air outlet 84. The air that has flowed into the air passage 85 from the air inlet 83 sequentially passes through the first portion 81 and the second portion 82 of the duct 80 and flows out of the air passage 85 through the air outlet 84.

[0157] In particular, in the pipe 80 of the present embodiment, an air inlet 83 is formed at the lower end of the first part 81, and an air outlet 84 is formed at the protruding end of the second part 82 extending laterally from the first part 81. Therefore, according to the present embodiment, rainwater, seawater, etc. are difficult to enter the air passage 85 in the pipe 80. As a result, it is possible to suppress the radiator 75 provided in the air passage 85 from being corroded, thereby ensuring the reliability of the transport refrigeration device 10.

[0158] Moreover, in the pipe 80 of the present embodiment, the air outlet 84 located at the protruding end of the second part 82 faces the external heat exchanger 32 of the box. Therefore, the air flowing out from the air outlet 84 flows toward the external heat exchanger 32 of the box, and the air reliably flows from the air inlet 83 toward the air outlet 84 in the air passage 85 in the pipe 80. Therefore, it is possible to ensure the heat released by the radiator 75 to the air, thereby keeping the temperature of the power module 71 within an appropriate range.

[0159] - Feature (6) of the embodiment -

[0160] In the transport refrigeration device 10 of the present embodiment, the radiator 75 includes a bottom plate 76 and a plurality of fins 78. The plate-shaped bottom plate 76 has a mounting surface 77 in contact with the power module 71. The plate-shaped fins 78 protrude from a surface of the bottom plate 76 different from the mounting surface 77.

[0161] In the transport refrigeration device 10 of the present embodiment, the air passage 85 formed by the pipe 80 is divided into a plurality of flow paths 86 by the fins 78. The air flowing into the air passage 85 separately flows into the plurality of flow paths 86 and contacts the fins 78. Therefore, according to the present embodiment, by reliably bringing the air into contact with the fins 78, it is possible to ensure the heat released by the radiator 75 to the air. As a result, the temperature of the power module 71 can be kept within an appropriate range.

[0162] - Feature (7) of the embodiment -

[0163] In the transport refrigeration device 10 of the present embodiment, the fins 78 of the radiator 75 extend in the vertical direction. Therefore, even if water enters the air passage 85, the water that enters will not accumulate on the fins 78. Therefore, according to the present embodiment, it is possible to suppress the radiator 75 from being corroded, thereby ensuring the reliability of the transport refrigeration device 10.

[0164] - Feature (8) of the embodiment -

[0165] In the transport refrigeration device 10 of the present embodiment, the control board 72 is housed in the electrical equipment box 36. The control board 72 controls the components of the transport refrigeration device 10.

[0166] - Features of the Embodiment (9)-

[0167] In the refrigeration device 10 for transportation of the present embodiment, the internal space of the electrical equipment box 36 is divided by a partition plate 90 into a first chamber 37a and a second chamber 37b. The inverter substrate 70 is housed in the first chamber 37a. The control substrate 72 is housed in the second chamber 37b. The metal partition plate 90 suppresses the propagation of noise from the inverter substrate 70 to the control substrate 72. Therefore, according to the present embodiment, the control substrate 72 can operate normally, and the inverter substrate 70 and the control substrate 72 can be housed in one electrical equipment box 36.

[0168] - Features of the Embodiment (10)-

[0169] In the refrigeration device 10 for transportation of the present embodiment, the partition plate 90 of the electrical equipment box 36 is formed with ventilation holes 93 both in its upper and lower parts. Therefore, as described above, a flow of air circulating between the first chamber 37a and the second chamber 37b is generated in the internal space of the electrical equipment box 36. As a result, an excessive rise in the temperature inside the first chamber 37a can be suppressed, and thus the temperature of the inverter substrate 70 can be maintained within an appropriate range.

[0170] - Features of the Embodiment (11)-

[0171] In the refrigeration device 10 for transportation of the present embodiment, a reactor 74 is housed in the electrical equipment box 36. The reactor 74 is arranged above the inverter substrate 70. Therefore, the heat transferred from the reactor 74 to the inverter substrate 70 can be suppressed to a low level, and thus the temperature rise of the inverter substrate 70 can be suppressed.

[0172] - Features of the Embodiment (12)-

[0173] In the refrigeration device 10 for transportation of the present embodiment, a refrigerant outlet, i.e., a liquid side header 137, is provided at one end of the container external heat exchanger 32. The air that has passed through the radiator 75 passes through a portion of the container external heat exchanger 32 at the other end.

[0174] In this way, in the present embodiment, the air that has absorbed heat from the radiator 75 flows in a portion of the container external heat exchanger 32 that is far from the refrigerant outlet, i.e., far from the liquid side header 137. Therefore, according to the present embodiment, even when the air that has absorbed heat from the radiator 75 passes through the container external heat exchanger 32, the temperature of the refrigerant flowing out of the container external heat exchanger 32 can be suppressed to a low level.

[0175] - Features of the Embodiment (13)-

[0176] In the transport refrigeration device 10 of the present embodiment, a fork groove 150 is provided above the electrical equipment box 36. A fork for lifting the transport refrigeration device 10 is inserted into the fork groove 150. The space S23 between the electrical equipment box 36 and the fork groove 150 communicates with "the internal space 153 of the fork groove 150" and "the primary side space S21 of the second space S2".

[0177] In the transport refrigeration device 10 of the present embodiment, the air that has passed through the fork groove 150 flows toward the container external heat exchanger 32. Therefore, it is easy to ensure the flow rate of the air flowing toward the container external heat exchanger 32.

[0178] - Modification Example 1 of the Embodiment -

[0179] The transport container of the present embodiment can also be used for land transportation. In this case, the transport container 1 is transported by a land transportation means such as a vehicle. Specifically, the transport container 1 is mounted on a trailer.

[0180] - Modification Example 2 of the Embodiment -

[0181] In the partition plate 90 provided on the electrical component box 36 of the transport refrigeration device 10 of the present embodiment, the ventilation holes 93 may be formed only on the front plate portion 91, or may be formed on both the front plate portion 91 and the side plate portion 92.

[0182] The embodiment and the modification examples have been described above, but it can be understood that various changes can be made to the solutions and specific situations without departing from the gist and scope of the claims. As long as the functions of the objects of the present disclosure are not reduced, appropriate combinations or replacements can also be made to the above-described embodiment, modification examples, and other embodiments. The words "first", "second", "third",... described above are only used to distinguish the statements containing these words, and do not limit the quantity and order of the statements.

[0183] - Industrial Applicability -

[0184] In summary, the present disclosure is useful for both the transport refrigeration device and the transport container.

[0185] - Symbol Explanation -

[0186] 1 Transport container

[0187] 10 Transport refrigeration device

[0188] 32 Container external heat exchanger (condenser)

[0189] 32a Air inflow surface

[0190] 36 Electrical equipment box (box)

[0191] 37a First chamber (space)

[0192] 37b Second chamber (space)

[0193] 36e Opposite plate

[0194] 70 Inverter substrate

[0195] 71 Power module (heat generating component)

[0196] 72 Control substrate

[0197] 74 Reactor

[0198] 75 Radiator

[0199] 76 Base plate (substrate)

[0200] 77 Mounting surface

[0201] 78 Fin

[0202] 80 Pipe

[0203] 81 First part

[0204] 82 Second part

[0205] 83 Air inlet

[0206] 84 Air outlet

[0207] 85 Air passage

[0208] 86 Flow path

[0209] 90 Partition plate

[0210] 93 Through hole

[0211] 137 Liquid side header (refrigerant outlet)

[0212] 150 Fork groove

[0213] S21 Primary side space

[0214] S23 Space

Claims

1. A refrigeration device for transportation, characterized in that: comprising: a condenser (32), the condenser (32) being formed in a rectangular cylindrical shape, its outer-facing surface being an air inlet surface (32a), its inner-facing surface being an air outlet surface (32b), and in the condenser (32), air flows from the air inlet surface (32a) towards the air outlet surface (32b); and a box (36), the box (36) being arranged on the side of the condenser (32) and accommodating a variable-frequency substrate (70), the condenser (32) comprising: a first flat portion (101) and a second flat portion (102) extending respectively in the horizontal direction; and a third flat portion (103) and a fourth flat portion (104) extending respectively in the vertical direction, the box (36) having a relative plate (36e) opposite to a portion of the air inlet surface (32a) of the condenser (32) formed by the fourth flat portion (104), the refrigeration device for transportation further comprising a radiator (75), the radiator (75) being provided on the relative plate (36e) and exposed to the outside of the box (36) to cool heat-generating components (71) provided on the variable-frequency substrate (70).

2. The refrigeration device for transportation according to claim 1, characterized in that: the refrigeration device for transportation further comprises a pipe (80), the pipe (80) forming an air passage (85) for arranging the radiator (75).

3. The refrigeration device for transportation according to claim 2, characterized in that: an air inlet (83) of the pipe (80) is open downward.

4. The refrigeration device for transportation according to claim 2 or 3, characterized in that: an air outlet (84) of the pipe (80) is open towards the air inlet surface (32a) of the condenser (32).

5. The refrigeration device for transportation according to claim 2 or 3, characterized in that: the pipe (80) comprises a first portion (81) and a second portion (82), the first portion (81) having an air inlet (83) and extending in a specified direction, the second portion (82) continuing from the first portion (81) and extending in a direction intersecting the specified direction, and having an air outlet (84).

6. The refrigeration device for transportation according to claim 2 or 3, characterized in that: the radiator (75) comprises a base body (76) and a plurality of fins (78), the base body (76) being in a plate shape and having a mounting surface (77) in contact with the heat-generating components (71), the fins (78) being in a plate shape and protruding from a surface of the base body (76) different from the mounting surface (77), the air passage (85) formed by the pipe (80) being divided into a plurality of flow paths (86) by the fins (78).

7. The refrigeration device for transportation according to claim 6, characterized in that: the fins (78) of the radiator (75) extend in the vertical direction.

8. The refrigeration device for transportation according to any one of claims 1 to 3, characterized in that: The refrigeration device for transportation further includes a control substrate (72) which is housed in the box (36) and used to control the refrigeration device for transportation.

9. The refrigeration device for transportation according to claim 8, wherein: The refrigeration device for transportation further includes a partition plate (90) which is arranged in the box (36) to divide the space (37a) for housing the inverter substrate (70) and the space (37b) for housing the control substrate (72) from each other, and suppresses the propagation of noise from the inverter substrate (70) to the control substrate (72).

10. The refrigeration device for transportation according to claim 9, wherein: Through holes (93) are formed in both the upper and lower parts of the partition plate (90).

11. The refrigeration device for transportation according to any one of claims 1 to 3, wherein: The refrigeration device for transportation further includes a reactor (74) which is housed in the box (36) and arranged above the inverter substrate (70).

12. The refrigeration device for transportation according to any one of claims 1 to 3, wherein: A refrigerant outlet (137) is provided at one end of the condenser (32), and the air that has passed through the radiator (75) passes through a part at the other end of the condenser (32).

13. The refrigeration device for transportation according to any one of claims 1 to 3, wherein: The refrigeration device for transportation further includes a fork slot (150) which is arranged above the box (36) for inserting a fork for lifting the refrigeration device for transportation into the fork slot (150), and the space (S23) between the box (36) and the fork slot (150) communicates with the internal space (153) of the fork slot (150) and the upstream space (S21) of the condenser (32).

14. A container for transportation, wherein: It includes the refrigeration device for transportation (10) according to any one of claims 1 to 13, and a container main body (2).

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