WO2023073888A1 - 輸送用冷凍機ユニット - Google Patents

輸送用冷凍機ユニット Download PDF

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Publication number
WO2023073888A1
WO2023073888A1 PCT/JP2021/039902 JP2021039902W WO2023073888A1 WO 2023073888 A1 WO2023073888 A1 WO 2023073888A1 JP 2021039902 W JP2021039902 W JP 2021039902W WO 2023073888 A1 WO2023073888 A1 WO 2023073888A1
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WO
WIPO (PCT)
Prior art keywords
casing
plate
electrical box
box
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/039902
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
海竜 朴
弘樹 神野
ケワル ダラマシ
匡平 松本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Priority to EP21962434.3A priority Critical patent/EP4407258A4/en
Priority to JP2023556000A priority patent/JP7668893B2/ja
Priority to PCT/JP2021/039902 priority patent/WO2023073888A1/ja
Publication of WO2023073888A1 publication Critical patent/WO2023073888A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/20—Refrigerated goods vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/003—Transport containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/003—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with respect to movable containers

Definitions

  • the present disclosure relates to a transportation refrigerator unit.
  • Patent Literature 1 discloses a refrigerator unit provided in a refrigerated vehicle that tows a trailer.
  • the refrigerator unit is attached to the front plate of the front wall of the trailer, and includes a control box (electrical box) that houses various electrical components such as a control board, and a box body (casing) that covers the control box from the outside. .
  • the box also accommodates heavy items such as a compressor and an outdoor heat exchanger.
  • the box body is formed with an outside air intake port (suction port).
  • An outdoor heat exchanger fan (fan) is provided between the outdoor air inlet and the outdoor heat exchanger to introduce the outdoor air into the outdoor heat exchanger.
  • the present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a transportation refrigerator unit that can improve the strength of the casing.
  • the present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a transportation refrigerator unit that can improve the cooling performance of an outdoor heat exchanger.
  • a transport refrigerator unit includes a casing having a rear panel fixed to the front surface of a trailer, and an electrical box provided inside the casing and housing electrical components. a first fixing portion for fixing the electrical equipment box to the back plate; and a second fixing portion for fixing the electrical equipment box to the casing in front of the back plate.
  • a refrigerating machine unit for transport includes a casing, and an electrical equipment box provided inside the casing and housing electrical components, the casing including a rear panel fixed to the front surface of a trailer, and an electrical equipment box. a lower plate extending forward from the rear plate; a front plate on the front side of the electrical box; a suction port provided in the front plate for introducing air into the casing; and a fan provided on the top plate for discharging the air in the casing to the outside, wherein the top surface of the electrical equipment box gradually increases toward the front side of the top plate. formed away from the
  • the strength of the casing can be improved. According to the transport refrigerator unit of the present disclosure, it is possible to improve the cooling performance of the outdoor heat exchanger.
  • FIG. 1 is a perspective view showing a schematic configuration of a refrigerated vehicle equipped with a transportation refrigerator unit according to an embodiment of the present disclosure
  • FIG. 1 is a perspective view of a refrigerator unit main body according to an embodiment of the present disclosure
  • FIG. 2 is a top view of the inside of an indoor unit and a refrigerator unit main body according to an embodiment of the present disclosure
  • Fig. 2 is a front view of the inside of the refrigerator unit main body according to the embodiment of the present disclosure
  • FIG. 4 is a left side view of the interior of the refrigerator unit main body according to the embodiment of the present disclosure
  • FIG. 4 is a left side view of the first fixing part and the second fixing part according to the embodiment of the present disclosure;
  • the refrigerated vehicle 1 includes a tractor 2 , a trailer 3 , and a transportation refrigerator unit 7 .
  • the vertical direction is simply referred to as the "vertical direction”
  • one of the directions perpendicular to the vertical direction is referred to as the "front-rear direction”
  • the direction perpendicular to the vertical direction and the front-rear direction is referred to as the "left-right direction”.
  • the traveling direction of the refrigerated vehicle 1 coincides with the front-rear direction.
  • the front and rear, left and right sides are determined based on the driver's seat of the refrigerated vehicle 1 .
  • the tractor 2 has a cab 4 as a driver's seat, and is driven by a driving engine (not shown).
  • a tractor 2 tows a trailer 3 .
  • the trailer 3 includes a trailer body 5 and a chassis 6.
  • the trailer body 5 is a box-shaped container supported from below by a chassis 6 .
  • the trailer body 5 extends in the front-rear direction.
  • a space is formed inside the trailer body 5 to accommodate cargo (not shown).
  • the trailer body 5 includes a front wall 5a arranged on the tractor 2 side, a top wall 5b connected to the upper end of the front wall 5a, and a left wall 5c connected to the left end of the front wall 5a and the left end of the top wall 5b. , and a right wall 5d connected to the right end of the front wall 5a and the right end of the top wall 5b.
  • the transportation refrigerator unit 7 has a refrigerator unit main body 8 and an indoor unit 9 .
  • the refrigerator unit main body 8 is arranged outside the trailer main body 5 .
  • the refrigerator unit main body 8 is fixed to the front upper portion of the front wall 5 a of the trailer main body 5 .
  • the refrigerator unit main body 8 includes a casing 10, an accumulator 53, a compressor 51, a fan 40, an outdoor heat exchanger 52, a receiver 54, an electrical box 20, A first fixing portion 61 , a second fixing portion 62 and a heat sink 30 are provided.
  • a space is formed inside the casing 10 to accommodate devices that constitute the refrigerator unit main body 8 .
  • the indoor unit 9 includes an expansion valve 55 , an indoor heat exchanger 56 and an indoor fan 57 .
  • a cooling cycle 50 of the transportation refrigerator unit 7 is composed of an accumulator 53, a compressor 51, an outdoor heat exchanger 52, a receiver 54, an expansion valve 55, an indoor heat exchanger 56, an indoor fan 57, and the like.
  • the accumulator 53 is housed inside the casing 10 .
  • the accumulator 53 is connected to the indoor heat exchanger 56 so as to receive the refrigerant that has passed through the indoor heat exchanger 56 .
  • Compressor 51 is housed in casing 10 and connected to accumulator 53 .
  • the compressor 51 compresses the gas phase refrigerant supplied from the accumulator 53 .
  • the fan 40 is housed inside the casing 10 .
  • the fan 40 draws air into the casing 10 and discharges the air inside the casing 10 to the outside.
  • the outdoor heat exchanger 52 is housed inside the casing 10 .
  • the outdoor heat exchanger 52 is connected to the compressor 51 so as to receive the refrigerant compressed by the compressor 51 .
  • the outdoor heat exchanger 52 is a condenser that uses outside air taken into the casing 10 by the fan 40 to cool and condense the gas-phase refrigerant supplied from the compressor 51 .
  • the gas-phase refrigerant supplied from the compressor 51 is changed into a liquid-phase refrigerant by the outdoor heat exchanger 52 .
  • the outdoor heat exchanger 52 is connected to the receiver 54 so as to supply the cooled refrigerant to the receiver 54 .
  • the receiver 54 is housed inside the casing 10 .
  • the receiver 54 temporarily stores the liquid-phase refrigerant supplied from the outdoor heat exchanger 52 and absorbs fluctuations in the flow rate of the refrigerant in the cooling cycle 50 .
  • the receiver 54 is connected to the expansion valve 55 so as to be able to supply the stored liquid-phase refrigerant.
  • the expansion valve 55 is housed inside the trailer body 5 .
  • One expansion valve 55 is provided on each of the left side and the right side within the trailer body 5 .
  • the two expansion valves 55 are arranged at symmetrical positions when viewed from above and have the same configuration.
  • the left expansion valve 55 of the two expansion valves 55 will be explained, and the explanation of the right expansion valve 55 will be omitted.
  • the expansion valve 55 is arranged at the upper part of the corner formed by the left wall 5c and the front wall 5a (the part near the top wall 5b).
  • the expansion valve 55 expands (decompresses) the liquid-phase refrigerant supplied from the receiver 54 .
  • the expansion valve 55 is connected to the indoor heat exchanger 56 so as to supply the expanded liquid-phase refrigerant to the indoor heat exchanger 56 .
  • the indoor heat exchanger 56 is housed inside the trailer body 5 .
  • the indoor heat exchangers 56 are provided one each on the left side and the right side in the trailer body 5 .
  • the two indoor heat exchangers 56 are arranged at symmetrical positions when viewed from above and have the same configuration.
  • the left indoor heat exchanger 56 of the two indoor heat exchangers 56 will be explained, and the explanation of the right indoor heat exchanger 56 will be omitted.
  • the indoor heat exchanger 56 is arranged near the expansion valve 55 .
  • the indoor heat exchanger 56 is an evaporator that exchanges heat between the air around the indoor heat exchanger 56 and the liquid-phase refrigerant supplied from the expansion valve 55 to evaporate the liquid-phase refrigerant.
  • the gas-phase refrigerant supplied from the expansion valve 55 is changed into a liquid-phase refrigerant by the indoor heat exchanger 56 .
  • the heat of the air around the indoor heat exchanger 56 is absorbed by the refrigerant.
  • the air around the indoor heat exchanger 56 is cooled.
  • the indoor fan 57 is housed inside the trailer body 5 .
  • One indoor fan 57 is provided on each of the left side and the right side in the trailer body 5 .
  • the two indoor fans 57 are arranged at symmetrical positions when viewed from above and have the same configuration.
  • the left indoor fan 57 of the two indoor fans 57 will be described, and the description of the right indoor fan 57 will be omitted.
  • the indoor fan 57 is arranged near the indoor heat exchanger 56 .
  • the indoor fan 57 cools the inside of the trailer body 5 by circulating the air cooled by the indoor heat exchanger 56 inside the trailer body 5 .
  • the casing 10 is shaped like a cube.
  • the casing 10 includes a rear plate 11 fixed to the front surface of the front wall 5a of the trailer body 5, a front plate 12 arranged to face the rear plate 11 in the front-rear direction, and the rear plate 11 and the front plate 12.
  • a lower plate 13 connected to the lower end and an upper plate 14 connected to the upper end of the front plate 12 of the rear plate 11 are arranged to face each other in the left-right direction. and a left plate 15 and a right plate 16 connected to.
  • the casing 10 is provided with a suction port 19 for introducing outside air into the casing 10 .
  • the suction port 19 has a cooling suction port 19a and a main suction port 19b.
  • the casing 10 is thin in the vertical direction.
  • the casing 10 is formed so that the height in the vertical direction is, for example, 50% or less of the width in the left-right direction and the depth in the front-rear direction.
  • the lower plate 13 extends forward from the lower end of the rear plate 11 .
  • the plate thickness direction of the lower plate 13 coincides with the vertical direction.
  • the bottom plate 13 is provided with a cooling suction port 19 a that passes through the bottom plate 13 and introduces air into the casing 10 .
  • the lower plate 13 is formed integrally with the rear plate 11, and formed in an L shape together with the rear plate 11 when viewed from the left-right direction.
  • the lower plate 13 functions together with the rear plate 11 as a main frame that supports the objects inside the casing 10 .
  • the upper plate 14 faces the lower plate 13 above.
  • the plate thickness direction of the upper plate 14 coincides with the vertical direction.
  • the top plate 14 is provided with two discharge ports 14a that pass through the top plate 14 and discharge air from the inside of the casing 10 to the outside.
  • the two outlets 14a are provided on the left side and the right side of the top plate 14 .
  • the left outlet 14a is provided so as to vertically face the cooling inlet 19a.
  • the discharge port 14a penetrates the upper plate 14 in the vertical direction.
  • the discharge port 14a is formed in a circular shape when viewed from above and below.
  • the front plate 12 is provided on the front side of the electrical box 20 .
  • the front plate 12 and the right plate 16 are provided with a main suction port 19 b for introducing air into the casing 10 .
  • the main suction port 19b is L-shaped when viewed from above and extends continuously from the front plate 12 to the right plate 16 .
  • the main suction port 19b penetrates the front plate 12 and the right plate 16. As shown in FIG. A metal mesh is attached to the main suction port 19b (see FIG. 2).
  • the accumulator 53, the compressor 51, the receiver 54, the electrical box 20, the heat sink 30, the outdoor heat exchanger 52, and the fan 40 are accommodated in the casing 10 described above. More specifically, an accumulator 53, a compressor 51, and a receiver 54 are provided in the right space within the casing 10. As shown in FIG. An electrical box 20 and a heat sink 30 are provided in the left space within the casing 10 . An outdoor heat exchanger 52 is provided inside the casing 10 at a position facing the main suction port 19b, and a fan 40 is provided inside the casing 10 at a position facing the discharge port 14a.
  • the electrical equipment box 20 is arranged between the cooling inlet 19a and the left outlet 14a. A space capable of accommodating various devices is formed inside the electrical equipment box 20 .
  • the electrical equipment box 20 houses electrical equipment (not shown) such as a power source such as an inverter and a converter, and power drive system components.
  • the electrical equipment box 20 is arranged in the casing 10 so as to be biased toward one side in the left-right direction (the left side in this embodiment).
  • the electrical equipment box 20 is formed such that the vertical dimension H decreases toward the front.
  • the electrical box 20 includes a back plate 21 facing the back plate 11 of the casing 10, a front plate 22 facing the back plate 21 in the front-rear direction, and lower ends of the back plate 21 and the front plate 22. and an upper plate 24 connected to the upper end of the front plate 22 of the back plate 21 are arranged opposite to each other in the left-right direction. a left plate 25 and a right plate 26 connected to the .
  • the back plate 21 is arranged at a position spaced forward from the back plate 11 of the casing 10 .
  • the front plate 22 is arranged at a position spaced rearward from the front plate 12 of the casing 10 .
  • the lower plate 23 is arranged so as to float upward from the lower plate 13 of the casing 10 .
  • the lower plate 23 is arranged so as to cover the cooling suction port 19a of the casing 10 .
  • the lower plate 23 is formed in a rectangular plate shape whose longitudinal direction is the front-rear direction.
  • the rear end of the lower plate 23 is connected to the lower end of the back plate 21 .
  • the lower plate 23 and the back plate 21 are formed in an L shape when viewed from the left-right direction.
  • the lower surface of the lower plate 23 is provided at a position facing the cooling suction port 19a, and serves as a cooled surface 27 to which the air introduced into the casing 10 through the cooling suction port 19a is blown and cooled. ing.
  • the surface 27 to be cooled extends in the horizontal direction and is kept at a constant distance from the bottom plate 13 of the casing 10 .
  • the top plate 24 is arranged at a position spaced downward from the top plate 14 of the casing 10 .
  • the upper plate 24 is formed in a rectangular plate shape and arranged so as to incline downward toward the front. That is, the upper surface 24a of the upper plate 24 is formed so as to separate downward from the upper surface plate 14 of the casing 10 toward the front side.
  • the plate thickness direction of the left plate 25 coincides with the left-right direction.
  • the left plate 25 extends in the front-rear direction.
  • the left plate 25 is formed in a trapezoidal shape in which the dimension H in the vertical direction tapers toward the front when viewed from the left-right direction.
  • the rear end of the left plate 25 and the lower end of the left plate 25 are perpendicular to each other in an L shape when viewed from the left-right direction.
  • the rear end of the left plate 25 is connected to the left end of the back plate 21 , and the lower end of the left plate 25 is connected to the left end of the lower plate 23 .
  • the right plate 26 is formed in the same shape as the left plate 25 .
  • the rear end of the right plate 26 is connected to the right end of the back plate 21 , and the lower end of the right plate 26 is connected to the right end of the lower plate 23 .
  • a first fixing portion 61 and a second fixing portion 62 are provided to fix the electrical equipment box 20 to the casing 10 .
  • the first fixing portion 61 is provided at the rear portion of the electrical box 20
  • the second fixing portion 62 is provided at the front portion of the electrical box 20 .
  • the first fixing portion 61 and the second fixing portion 62 are provided symmetrically with the electrical equipment box 20 interposed therebetween.
  • the left and right first fixing portions 61 and second fixing portions 62 have the same configuration.
  • first fixing portion 61 and the second fixing portion 62 on the left side of the first fixing portion 61 and the second fixing portion 62 on the left and right sides will be explained, and the first fixing portion 61 and the second fixing portion 62 on the right side will be explained. omitted.
  • the first fixing portion 61 is provided at the rear end portion of the left plate 25 of the electrical box 20 .
  • a pair of first fixing portions 61 are provided spaced apart in the vertical direction.
  • the first fixing portion 61 fixes the electrical box 20 to the back plate 11 of the casing 10 .
  • the first fixing portion 61 fixes the electrical box 20 to the casing 10 so that a space is formed between the back plate 21 of the electrical box 20 and the back plate 11 of the casing 10 .
  • the first fixing portion 61 includes a casing-side member 63 joined to the casing 10 , an electrical box-side member 64 joined to the electrical box 20 , and bolts 65 .
  • the casing-side member 63 has a fastening portion 63a and a joint portion 63b.
  • the fastening portion 63a is formed in a U shape that opens toward the back plate 11 of the casing 10 when viewed in the left-right direction.
  • the joint portion 63b is provided at the open end of the fastening portion 63a when viewed in the left-right direction, and extends in a direction away from the fastening portion 63a.
  • the joint portion 63b is joined to the back plate 11 by, for example, welding.
  • the electrical box side member 64 includes a fixing portion main body 66 and ribs 67 .
  • the fixing portion main body 66 is formed in an L shape when viewed from above and below.
  • the fixing portion main body 66 has a first piece 66 a along the back plate 11 of the casing 10 and a second piece 66 b along the left plate 25 of the electrical box 20 .
  • the first piece 66 a is superimposed on the fastening portion 63 a of the casing-side member 63 .
  • the second piece 66b is joined to the left plate 25 of the electrical box 20.
  • the ribs 67 are provided at both ends of the fixing portion main body 66 in the vertical direction.
  • the rib 67 is formed in the shape of a right triangle having a right-angled corner at the boundary between the first piece 66a and the second piece 66b when viewed from above.
  • the rib 67 connects the first piece 66a and the second piece 66b and suppresses the inward bending of the first piece 66a and the second piece 66b.
  • the bolt 65 fastens and fixes the fastening portion 63a of the casing-side member 63 and the first piece 66a of the electrical box-side member 64 in a state of being overlapped.
  • the second fixing part 62 is provided on the front part of the left plate 25 of the electrical box 20 .
  • the second fixing portion 62 fixes the electrical box 20 to the bottom plate 13 of the casing 10 ahead of the rear plate 11 of the casing 10 .
  • the second fixing portion 62 fixes the electrical box 20 to the casing 10 such that a space is formed between the lower plate 23 of the electrical box 20 and the lower surface plate 13 of the casing 10 .
  • the second fixing part 62 has the same configuration as the first fixing part 61. That is, the second fixing portion 62 includes a casing side member 63 , an electrical box side member 64 and bolts 65 .
  • the same components as those of the first fixing portion 61 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.
  • the fastening portion 63a of the second fixing portion 62 is formed in a U shape that opens toward the lower surface plate 13 of the casing 10 when viewed from the left-right direction.
  • a joint portion 63b of the second fixing portion 62 is joined to the bottom plate 13 by, for example, welding.
  • a fixing portion main body 66 of the second fixing portion 62 is formed in an L shape when viewed from the front-rear direction.
  • a fixing portion main body 66 of the second fixing portion 62 has a first piece 66 a along the bottom plate 13 of the casing 10 and a second piece 66 b along the left plate 25 of the electrical box 20 .
  • the ribs 67 of the second fixing portion 62 are provided at both ends of the fixing portion main body 66 in the front-rear direction.
  • the rib 67 of the second fixing portion 62 is formed in a right-angled triangle shape having a right-angled corner at the boundary between the first piece 66a and the second piece 66b when viewed from the front-rear direction.
  • the upper end of the upper first fixing portion 61 of the pair of first fixing portions 61 is the upper end 61a of the first fixing portion 61
  • the lower first fixing portion 61 of the pair of first fixing portions 61 is the upper end 61a.
  • the lower end of the fixed part 61 be the lower end 61 b of the first fixed part 61 .
  • all the second fixing portions 62 are integrated, and the front ends and rear ends of the second fixing portions 62 are grasped. In this embodiment, since only one second fixing portion 62 is provided, the front end 62 a and the rear end of the second fixing portion 62 are defined for one second fixing portion 62 .
  • an imaginary triangle T is formed by the upper end 61a and the lower end 61b of the first fixing portion 61 and the front end 62a of the second fixing portion 62 when viewed in the left-right direction.
  • the heat sink 30 is provided so as to be sandwiched between the cooled surface 27 of the electrical equipment box 20 and the cooling inlet 19 a of the casing 10 .
  • the heat sink 30 has a cooling plate 31 and a plurality of fins 32 .
  • the cooling plate 31 is provided along the surface 27 to be cooled of the electrical box 20 .
  • the cooling plate 31 is fixed to the electrical equipment box 20 with its upper surface in close contact with the surface 27 to be cooled.
  • a plurality of fins 32 are arranged to protrude from the cooling plate 31 and extend along the cooling plate 31 .
  • the direction in which the fins 32 extend coincides with the horizontal direction.
  • the compressor 51 is arranged in the casing 10 so as to be biased toward the other side in the left-right direction (the right side in this embodiment).
  • the outdoor heat exchanger 52 is provided between the electrical equipment box 20 and the main suction port 19b.
  • the outdoor heat exchanger 52 is formed in the same shape as the main suction port 19b when viewed from above and below.
  • the outdoor heat exchanger 52 is formed, for example, in an L shape when viewed from above and below.
  • the outdoor heat exchanger 52 exchanges heat between the air introduced from the main suction port 19 b and the refrigerant flowing through the cooling cycle 50 .
  • the outdoor heat exchangers 52 are arranged to face each other over the main suction port 19b.
  • the compressor 51 faces the main suction port 19b with the outdoor heat exchanger 52 interposed therebetween.
  • the right side of the electrical equipment box 20 faces the main suction port 19b with the outdoor heat exchanger 52 interposed therebetween.
  • the fan 40 is provided on the opposite side of the electrical equipment box 20 from the surface 27 to be cooled.
  • the fan 40 exhausts the air inside the casing 10 to the outside.
  • the fan 40 is provided on the top plate 14 of the casing 10 . More specifically, the fan 40 is arranged to face the first fan 41 facing the left outlet 14a of the two outlets 14a of the casing 10, and to face the right outlet 14a. and a second fan 42 .
  • the axial direction of the fan 40 coincides with the vertical direction.
  • the first fan 41 is provided on the opposite side of the electrical equipment box 20 from the cooling inlet 19a.
  • the second fan 42 faces the accumulator 53 , the compressor 51 and the receiver 54 .
  • FIG. 1 Part of the Center of Gravity of the Entire Casing and Contents in the Casing
  • the center of gravity G of the entire casing 10 and the objects contained in the casing 10 is located behind the fixing point of the second fixing portion 62 . That is, the second fixing portion 62 fixes the electrical box 20 to the casing 10 in front of the center of gravity G of the entire casing 10 and the objects contained in the casing 10 .
  • center of gravity G of the entire casing 10 and the objects contained in the casing 10 is located inside the electrical box 20 when viewed from above and below.
  • the center of gravity G of the entire casing 10 and the objects contained in the casing 10 is positioned inside the virtual triangle T described above when viewed from the left-right direction.
  • the air in the casing 10 flows as follows. As shown in FIGS. 4 and 5 , when the fan 40 is operated, the air inside the casing 10 is discharged to the outside and introduced into the casing 10 through the suction port 19 .
  • the air introduced into the casing 10 from the cooling suction port 19 a of the suction ports 19 is blown against the cooling plate 31 of the heat sink 30 .
  • the air blown onto the cooling plate 31 flows along the fins 32 and is guided to both lateral ends of the cooling plate 31 .
  • the air guided to both ends of the cooling plate 31 in the left-right direction flows so as to bypass the electrical equipment box 20 . More specifically, the air flows along the left wall 5c or the right wall 5d of the electrical box 20, then flows along the slope of the upper surface 24a of the electrical box 20, and is sucked into the fan 40 arranged in the upper part of the casing 10.
  • the air introduced into the casing 10 from the cooling suction port 19 a and bypassing the electrical equipment box 20 is sucked mainly by the first fan 41 of the fans 40 .
  • the air sucked by the fan 40 is discharged out of the casing 10 through the discharge port 14a.
  • Air introduced into the casing 10 from the main suction port 19 b of the suction ports 19 passes through the outdoor heat exchanger 52 .
  • the air that has passed through the outdoor heat exchanger 52 flows along the surface of the compressor 51 or electrical box 20 .
  • Compressor 51 and electrical box 20 are cooled by air flowing along their surfaces.
  • the air guided to the electrical box 20 side flows along the slope of the upper surface 24 a of the electrical box 20 and is sucked into the fan 40 arranged on the upper part of the casing 10 .
  • the air sucked by the fan 40 is discharged out of the casing 10 through the discharge port 14a.
  • the transportation refrigerator unit 7 includes a first fixing portion 61 that fixes the electrical box 20 to the back plate 11 and a second fixing portion that secures the electrical box 20 to the casing 10 ahead of the back plate 11. 62;
  • the overall load of the casing 10 and the objects contained in the casing 10 can be distributed to the back plate 11 of the casing 10 and the portion of the casing 10 in front of the back plate 11 via the electrical box 20. can. Therefore, the electrical equipment box 20 functions as a strength member of the casing 10 . Therefore, the strength of the casing 10 can be improved.
  • the second fixing part 62 fixes the electrical box 20 to the casing 10 in front of the center of gravity G of the entire casing 10 and the objects contained in the casing 10 .
  • the overall load of the casing 10 and the objects contained in the casing 10 can be distributed to the front and rear of the electrical equipment box 20 . Therefore, the strength of the casing 10 can be further improved.
  • an imaginary triangle T is formed by the upper end 61a and the lower end 61b of the first fixing portion 61 and the front end 62a of the second fixing portion 62 when viewed in the left-right direction.
  • the overall load of the casing 10 and the objects contained in the casing 10 can be distributed to the casing 10 via the electrical box 20 while the load applied to the electrical box 20 is divided into three. Therefore, the strength of the casing 10 can be further improved.
  • the center of gravity G of the entire casing 10 and the objects contained in the casing 10 is positioned inside the virtual triangle T when viewed from the left-right direction.
  • the center of gravity G of the entire casing 10 and the objects contained in the casing 10 is positioned inside the electrical box 20 when viewed from the top and bottom direction.
  • the overall load of the casing 10 and the objects contained in the casing 10 can be more reliably distributed by the electrical equipment box 20 that functions as a strength member. Therefore, the strength of the casing 10 can be further improved.
  • the electrical equipment box 20 may be formed so that the dimension H in the vertical direction decreases toward the front.
  • the center of gravity of the electrical box 20 can be brought closer to the back plate 11 of the casing 10 compared to the case where the vertical dimension H of the electrical box 20 is constant in the front-rear direction. Therefore, the center of gravity G of the entire casing 10 and the objects contained in the casing 10 can be brought closer to the back plate 11 of the casing 10 .
  • the second fixing portion 62 fixes the electrical box 20 to the casing 10 so that a space is formed between the electrical box 20 and the casing 10 .
  • the electrical equipment box 20 is biased on one side in the left-right direction, and the compressor 51 is biased on the other side in the left-right direction.
  • the electrical box 20 and the compressor 51 face the suction port 19 with the outdoor heat exchanger 52 interposed therebetween.
  • the air that has been introduced into the casing 10 and has been heat-exchanged with the refrigerant by the outdoor heat exchanger 52 can be used to cool the electrical box 20 and the compressor 51 . Therefore, the cooling performance of the electrical equipment box 20 and the compressor 51 can be improved.
  • the transportation refrigerator unit 7 further includes a fan 40 that is provided on the top plate 14 of the casing 10 and discharges the air inside the casing 10 to the outside.
  • the upper surface 24a of the electrical equipment box 20 is formed so as to separate from the upper surface plate 14 of the casing 10 toward the front side.
  • the air introduced into the casing 10 from the suction port 19 can be guided to the fan 40 by the inclination of the upper surface 24 a of the electrical equipment box 20 . Therefore, the pressure loss of the air flowing inside the casing 10 can be reduced, and the flow rate of the air inside the casing 10 can be increased. Therefore, the cooling performance of the outdoor heat exchanger 52 can be improved.
  • the embodiments of the present disclosure have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and design changes etc. within the scope of the present disclosure are also included.
  • the said embodiment demonstrated the case where the casing 10 was a hexahedron, it does not restrict to this.
  • the casing 10 may be formed in a tetrahedral shape having a back plate 11 and a bottom plate 13 .
  • the electrical equipment box 20 is a hexahedron, but it is not limited to this.
  • the electrical equipment box 20 may be formed in a tetrahedral shape having a back plate 21 and a lower plate 23 .
  • the first fixing portion 61 and the second fixing portion 62 are provided symmetrically with the electrical component box 20 interposed therebetween, but this is not the only option. It is sufficient that the first fixing portion 61 fixes the electrical box 20 to the rear plate 11 of the casing 10 and the second fixing portion 62 fixes the electrical box 20 to a portion of the casing 10 in front of the rear plate 11 .
  • the second fixing portion 62 may fix the left plate 25 or the right plate 26 of the electrical box 20 to the top plate 14 of the casing 10 .
  • the positions and the number of the first fixing portion 61 and the second fixing portion 62 can be changed as appropriate.
  • the compressor 51 faces the main suction port 19b via the outdoor heat exchanger 52
  • the right side of the electrical box 20 faces the main suction port 19b via the outdoor heat exchanger 52.
  • Only one of the compressor 51 and the outdoor heat exchanger 52 may be provided so as to face the main suction port 19b with the outdoor heat exchanger 52 interposed therebetween.
  • the electrical equipment box 20 is formed such that the upper surface 24a is formed so as to separate downward from the upper surface plate 14 of the casing 10 as it goes forward, but it is not limited to this.
  • the electrical equipment box 20 may be formed in a cubic shape in which the distance between the upper surface 24a and the upper surface plate 14 of the casing 10 is constant.
  • the surface to be cooled 27 which is the lower surface of the electrical box 20, extends in the horizontal direction, but it is not limited to this.
  • the cooled surface 27 may be inclined downward away from the upper surface plate 14 of the casing 10 .
  • the pair of first fixing portions 61 are provided so as to be spaced apart in the vertical direction, but the present invention is not limited to this.
  • only one first fixing portion 61 may be provided on the upper portion of the electrical equipment box 20 .
  • the upper end 61a and the lower end 61b of the first fixing portion 61 are defined.
  • the first fixing portion 61 may be formed in a shape extending in the vertical direction.
  • the transportation refrigerator unit 7 includes a casing 10 having a rear plate 11 fixed to the front surface of the trailer 3, and a casing 10 provided inside the casing 10 to accommodate electrical components.
  • the electrical equipment box 20 functions as a strength member of the casing 10 .
  • the transportation refrigerator unit 7 according to the second aspect is the transportation refrigerator unit 7 of (1), wherein the second fixing part 62 is the casing 10 and the contents inside the casing 10
  • the electrical equipment box 20 may be fixed to the casing 10 in front of the center of gravity G of the whole.
  • the overall load of the casing 10 and the objects contained in the casing 10 can be distributed to the front and rear of the electrical equipment box 20 .
  • a transportation refrigerator unit 7 according to a third aspect is the transportation refrigerator unit 7 of (1) or (2), in which the upper end 61a of the first fixing portion 61 is An imaginary triangle T may be formed by the lower end 61 b and the front end 62 a of the second fixing portion 62 .
  • the overall load of the casing 10 and the objects contained in the casing 10 can be distributed to the casing 10 via the electrical box 20 while the load applied to the electrical box 20 is divided into three.
  • a transportation refrigerator unit 7 according to a fourth aspect is the transportation refrigerator unit 7 of (3), in which the entire casing 10 and the contents inside the casing 10 are viewed from the left-right direction. may be positioned inside the imaginary triangle T.
  • a transportation refrigerator unit 7 according to a fifth aspect is the transportation refrigerator unit 7 according to any one of (1) to (4), in which the casing 10 and the casing The center of gravity of the entire contents in 10 may be located inside the electrical box 20 .
  • the overall load of the casing 10 and the objects contained in the casing 10 can be more reliably distributed by the electrical equipment box 20 that functions as a strength member.
  • a transportation refrigerator unit 7 according to a sixth aspect is the transportation refrigerator unit 7 according to any one of (1) to (5), in which the electrical component box 20 is vertically arranged toward the front. It may be formed so that the dimension H in the direction is small.
  • the center of gravity of the electrical box 20 can be brought closer to the back plate 11 of the casing 10 compared to the case where the vertical dimension H of the electrical box 20 is constant in the front-rear direction. Therefore, the center of gravity G of the entire casing 10 and the objects contained in the casing 10 can be brought closer to the back plate 11 of the casing 10 .
  • a transportation refrigerator unit 7 according to a seventh aspect is the transportation refrigerator unit 7 according to any one of (1) to (6), wherein the second fixing portion 62 is the electrical component box 20
  • the electrical equipment box 20 may be fixed to the casing 10 so that a space is formed between and the casing 10 .
  • a transportation refrigerator unit 7 according to an eighth aspect is the transportation refrigerator unit 7 according to any one of (1) to (7), wherein the casing 10 is provided with a suction port 19, A compressor 51 provided inside the casing 10 and an outdoor heat exchanger 52 facing each other across the suction port 19 are further provided, and the electrical equipment box 20 is arranged to be biased to one side in the left-right direction. , the compressor 51 is arranged biased to the other side in the left-right direction, and at least one of the electrical box 20 and the compressor 51 faces the suction port 19 via the outdoor heat exchanger 52. good too.
  • the air that has been introduced into the casing 10 and has been heat-exchanged with the refrigerant by the outdoor heat exchanger 52 can be used to cool at least one of the electrical box 20 and the compressor 51 .
  • a transportation refrigerator unit 7 according to a ninth aspect is the transportation refrigerator unit 7 according to any one of (1) to (7), wherein the casing 10 extends forward from the back plate 11. a bottom plate 13 extending toward; a front plate 12 on the front side of the electrical equipment box 20; and a fan 40 provided on the top plate 14 for discharging the air in the casing 10 to the outside. It may be formed so as to separate from the top plate 14 as it goes.
  • the air introduced into the casing 10 from the suction port 19 can be guided to the fan 40 by the inclination of the upper surface 24 a of the electrical equipment box 20 . Therefore, the pressure loss of the air flowing inside the casing 10 can be reduced, and the flow rate of the air inside the casing 10 can be increased.
  • a transportation refrigerator unit 7 includes a casing 10 and an electrical equipment box 20 provided inside the casing 10 and housing electrical components.
  • a rear plate 11 fixed to the front surface of the trailer, a lower plate 13 extending forward from the rear plate 11, a front plate 12 on the front side of the electrical equipment box 20, and provided on the front plate 12, It has a suction port 19 for introducing air into the casing 10, and an upper plate 14 facing above the lower plate 13, and is provided on the upper plate 14 to discharge the air in the casing 10 to the outside.
  • the upper surface 24a of the electrical equipment box 20 is formed so as to separate from the upper surface plate 14 toward the front side.
  • a transportation refrigerator unit 7 according to an eleventh aspect is the transportation refrigerator unit 7 of (9) or (10), wherein the compressor 51 provided inside the casing 10; An outdoor heat exchanger 52 is further provided so as to face each other across the suction port 19, the electrical equipment box 20 is biased on one side in the left-right direction, and the compressor 51 is biased on the other side in the left-right direction. At least one of the electrical equipment box 20 and the compressor 51 may face the suction port 19 via the outdoor heat exchanger 52 .
  • the present disclosure relates to a transportation refrigerator unit. According to the present disclosure, the strength of the casing can be improved. According to the present disclosure, it is possible to improve the cooling performance of the outdoor heat exchanger.
  • Fin 40 Fan 41... First fan 42... Second fan 50... Cooling cycle 51... Compressor 52... Outdoor heat exchanger 53... Accumulator 54... Receiver 55... Expansion valve 56... Indoor heat exchanger 57... Indoor fan 61... First fixing part 61a... Upper end 61b... Lower end 62... Second fixing part 62a... Front end 63... Casing side member 63a... Fastening part 63b... Joining part 64... Electrical box side member 65... Bolt 66... Fixed part body 66a... First Piece 66b...Second piece 67...Rib G...Center of gravity H...Dimension T...Imaginary triangle

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Transportation (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
PCT/JP2021/039902 2021-10-28 2021-10-28 輸送用冷凍機ユニット Ceased WO2023073888A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21962434.3A EP4407258A4 (en) 2021-10-28 2021-10-28 Transport refrigeration unit
JP2023556000A JP7668893B2 (ja) 2021-10-28 2021-10-28 輸送用冷凍機ユニット
PCT/JP2021/039902 WO2023073888A1 (ja) 2021-10-28 2021-10-28 輸送用冷凍機ユニット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/039902 WO2023073888A1 (ja) 2021-10-28 2021-10-28 輸送用冷凍機ユニット

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WO2023073888A1 true WO2023073888A1 (ja) 2023-05-04

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003705A (ja) * 2002-05-31 2004-01-08 Seirei Ind Co Ltd コンテナ用冷凍装置
JP2007309608A (ja) * 2006-05-19 2007-11-29 Daikin Ind Ltd トレーラー用冷凍装置
JP2010286149A (ja) * 2009-06-10 2010-12-24 Daikin Ind Ltd 輸送用冷凍装置
JP2012050324A (ja) * 2010-07-27 2012-03-08 Daikin Ind Ltd コンテナ用冷凍装置の電力供給装置
JP2016211788A (ja) * 2015-05-11 2016-12-15 三菱重工業株式会社 輸送用冷凍機、および、トレーラー
JP2019174062A (ja) * 2018-03-29 2019-10-10 三菱重工サーマルシステムズ株式会社 保冷車両用冷凍機ユニット
JP2019177857A (ja) 2018-03-30 2019-10-17 三菱重工サーマルシステムズ株式会社 冷凍機ユニット、及び保冷車両

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003705A (ja) * 2002-05-31 2004-01-08 Seirei Ind Co Ltd コンテナ用冷凍装置
JP2007309608A (ja) * 2006-05-19 2007-11-29 Daikin Ind Ltd トレーラー用冷凍装置
JP2010286149A (ja) * 2009-06-10 2010-12-24 Daikin Ind Ltd 輸送用冷凍装置
JP2012050324A (ja) * 2010-07-27 2012-03-08 Daikin Ind Ltd コンテナ用冷凍装置の電力供給装置
JP2016211788A (ja) * 2015-05-11 2016-12-15 三菱重工業株式会社 輸送用冷凍機、および、トレーラー
JP2019174062A (ja) * 2018-03-29 2019-10-10 三菱重工サーマルシステムズ株式会社 保冷車両用冷凍機ユニット
JP2019177857A (ja) 2018-03-30 2019-10-17 三菱重工サーマルシステムズ株式会社 冷凍機ユニット、及び保冷車両

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4407258A4

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EP4407258A1 (en) 2024-07-31
EP4407258A4 (en) 2024-12-11
JPWO2023073888A1 (https=) 2023-05-04

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