JP2018204815A - Refrigeration machine for transportation - Google Patents

Abstract

To form a main stream of cooling air in which an influence of heat generated by an exhaust pipe is inhibited in an internal combustion engine housing chamber.SOLUTION: A refrigeration machine 1 for transportation includes: an engine body part 30 which provides power to a compressor; a suction pipe 31 which is disposed on a front surface of the engine body part 30 and supplies combustion air to the engine body part 30; an exhaust system component 32 which is disposed on a rear surface of the engine body part 30 and exhausts exhaust gas generated by the engine body part 30; an engine housing chamber 27 which houses a sub engine 11 having the engine body part 30, the suction pipe 31, and the exhaust system component 32; and a centrifugal fan 35 which introduces outer air into the engine housing chamber 27. The centrifugal fan 35 is disposed at an upstream of the sub engine 11 in outer air flow and introduces the outer air toward a suction pipe 31 side than an exhaust system component 32 side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a transport refrigerator mounted in a transport vehicle.

  One of the transport chillers mounted on transport vehicles such as refrigeration vehicles and refrigeration trailers is a sub-engine type transport chiller equipped with a dedicated sub-engine as a power source. In such a sub-engine type transport refrigerator, the sub-engine is accommodated in the accommodation chamber so that noise from the sub-engine is not radiated to the outside of the refrigerator. When the sub engine is housed in the housing chamber, the exhaust heat generated by driving the sub engine stays in the housing chamber. If the exhaust heat stays in the storage chamber, the temperature in the storage chamber rises, and other parts stored in the storage chamber may be heated and exceed the allowable temperature.

  For example, Patent Document 1 discloses a technique for solving such a problem. In Patent Document 1, the exhaust pipe is connected to the engine main body at a position blocked by the first partition plate, and the exhaust pipe is separated from the air flow path flowing inside the box. Thereby, it is suppressed that the air which flowed into the space where the engine main body is arranged is immediately heated by the exhaust pipe.

JP 2017-20671 A

  However, in patent document 1, the drive ventilation part which takes in the air of a box is arrange | positioned downstream from a drive source, and becomes a structure which sucks air in a box. In such a configuration, there is a possibility that air may be taken into the drive air blower from the entire inside of the box, and there is a possibility that air flowing inside the box cannot be suitably separated from the exhaust pipe. As a result, there is a possibility that the air flowing in the box body is affected by the heat generated by the exhaust pipe.

  The present invention has been made in view of such circumstances, and is a transport refrigerator capable of forming a main flow of cooling air in which an influence of heat generated by an exhaust pipe is suppressed in an internal combustion engine housing chamber. The purpose is to provide.

In order to solve the above problems, the transport refrigerator of the present invention employs the following means.
A transport refrigerator according to one aspect of the present invention is disposed on one side of the internal combustion engine that provides power to a compressor used in a refrigerator that cools a cooling space of a transport vehicle, An intake pipe for supplying combustion air to the internal combustion engine, an exhaust pipe disposed on the other side of the internal combustion engine for exhausting exhaust gas generated by the internal combustion engine, the internal combustion engine, the intake pipe and the exhaust pipe An internal combustion engine storage chamber to be stored; and a blower for introducing cooling air into the internal combustion engine storage chamber, the blower being disposed upstream of the internal combustion engine in the flow of the cooling air, and the exhaust pipe The cooling air is introduced toward the intake pipe side rather than the side.

Since the exhaust gas generated by the internal combustion engine is high temperature, the exhaust pipe for exhausting the exhaust gas also becomes high temperature. On the other hand, the intake pipe that supplies the combustion air to the internal combustion engine is air before being used for combustion, and therefore has a relatively low temperature. In the above configuration, when introducing the cooling air into the internal combustion engine housing chamber, the blower introduces the cooling air toward the intake pipe side rather than the exhaust pipe side. As a result, a main stream of relatively low-temperature cooling air in which the influence of heat generated by the high-temperature exhaust pipe is suppressed can be formed in the internal combustion engine housing chamber. Therefore, for example, the built-in component arranged in the main stream of cooling air is cooled by the cooling air that is not affected by the heat generated by the exhaust pipe, and thus is cooled appropriately. Therefore, the lifetime of the built-in component can be extended. In addition, the reliability of the built-in component can be improved. The formation of the main flow means that the cooling air is introduced so that the flow rate of the cooling air introduced into the internal combustion engine housing chamber is larger on the intake pipe side than on the exhaust pipe side. It is preferable to introduce as much of the introduced cooling air as possible into the intake pipe.
When the blower is arranged downstream of the internal combustion engine, air is taken into the blower from the entire interior of the internal combustion engine housing chamber, so that it is difficult to form a main flow of air in a specific region in the internal combustion engine housing chamber, and the exhaust pipe The air on the side may also circulate in the internal combustion engine storage chamber. In the above configuration, since the blower is arranged upstream of the internal combustion engine, the cooling air can be reliably introduced toward the intake pipe side. Therefore, the main flow of cooling air can be reliably formed on the intake pipe side.
In addition, since the internal combustion engine is housed in the internal combustion engine housing chamber, the internal combustion engine housing chamber shields the radiation emitted from the internal combustion engine to the outside. Therefore, noise caused by the internal combustion engine and radiated to the outside of the internal combustion engine storage chamber can be reduced. If a sound absorbing material is provided in the internal combustion engine storage chamber, noise can be reduced more effectively.

  A transport refrigerator according to an aspect of the present invention includes a control device that controls driving of the compressor, and an electrical box that houses the control device, and the electrical box is used for the cooling rather than the blower. You may arrange | position upstream in the flow of air.

In the above configuration, since the electrical equipment box is arranged upstream of the blower, the cooling air before being introduced into the internal combustion engine housing chamber in which the internal combustion engine or the like is housed can be brought into contact with the electrical equipment box. Therefore, since the electrical equipment box can be cooled without being affected by the internal combustion engine or the like, the electrical equipment box can be suitably cooled.
In addition, since the device housed in the internal combustion engine housing chamber and the electrical equipment box are cooled by one blower, the configuration is simplified compared to the case where a plurality of blowers are provided to cool each of the devices, and Cost can be reduced.

  A transport refrigerator according to an aspect of the present invention includes a circulation pump that circulates a coolant that cools the internal combustion engine, and a pump drive device that drives the circulation pump, and the pump drive device includes the cooling device. It may be a flow path on the intake pipe side through which working air flows, and may be disposed between the blower and the internal combustion engine.

In the above configuration, the pump drive device is disposed in the flow path on the intake pipe side through which the cooling air flows. In other words, the pump drive device is arranged in the main stream of cooling air. As a result, the cooling air that is not affected by the heat generated by the exhaust pipe and the pump drive device come into contact with each other, so that the pump drive device can be suitably cooled. Therefore, the life of the pump drive device can be extended. Moreover, the reliability of the pump drive device can be improved.
A pump drive device is arranged between the blower and the internal combustion engine. Thereby, the distance of an air blower and a pump drive device becomes comparatively short. Therefore, the pump drive device can be cooled more suitably.
Note that the pump drive device is a device composed of, for example, a belt and a pulley, and in this case, it is effective to cool the sliding portion between the belt and the pulley.

  In the transport refrigerator according to one aspect of the present invention, the distance between the intake pipe and the inner peripheral surface of the internal combustion engine storage chamber facing the intake pipe is the exhaust pipe and the exhaust pipe facing the exhaust pipe. It is set longer than the distance from the inner peripheral surface of the internal combustion engine storage chamber.

In the above configuration, the distance between the intake pipe and the inner peripheral surface of the internal combustion engine storage chamber is set longer than the distance between the exhaust pipe and the internal peripheral surface of the internal combustion engine storage chamber. That is, the space formed between the intake pipe and the internal combustion engine storage chamber is formed wider than the space formed between the exhaust pipe and the internal combustion engine storage chamber.
Thus, by forming a wide flow path through which the main flow of cooling air flows, more cooling air that is not affected by the heat generated by the exhaust pipe can be introduced into the internal combustion engine housing chamber.

  In the transport refrigerator according to one aspect of the present invention, a heat shielding material may be provided on an inner peripheral surface of the internal combustion engine storage chamber facing the exhaust pipe.

  Since the space formed between the exhaust pipe and the inner peripheral surface of the internal combustion engine housing chamber facing the exhaust pipe is out of the main flow of the cooling air, the heat generated by the exhaust pipe stays. In the above configuration, since the heat shielding material is provided on the inner peripheral surface of the internal combustion engine housing chamber facing the exhaust pipe, the internal peripheral surface of the internal combustion engine housing chamber is prevented from being damaged by the heat generated by the exhaust pipe. Can do.

  In the transport refrigerator according to an aspect of the present invention, the internal combustion engine housing chamber is formed with a first opening through which the cooling air is introduced by the blower and a second opening through which the cooling air is discharged. The second opening may be formed on the opposite side of the first opening across the internal combustion engine.

  In the above configuration, the second opening is formed on the opposite side of the first opening with the internal combustion engine interposed therebetween. Thereby, the main flow of the cooling air introduced into the internal combustion engine housing chamber flows along the internal combustion engine. Therefore, the flow of the cooling air in the internal combustion engine housing chamber can be made relatively long.

  The transport refrigerator according to an aspect of the present invention may include a battery for starting the internal combustion engine, and the battery may be disposed in a flow path on the intake pipe side through which the cooling air flows.

  In the above configuration, the battery is arranged in the flow path on the intake pipe side through which the cooling air flows. In other words, the battery is arranged in the main stream of cooling air. Thereby, since the battery and the cooling air which is not influenced by the heat which an exhaust pipe emits contact, a battery can be cooled suitably. Therefore, the life of the battery can be extended. Further, the reliability of the battery can be improved.

  In the transport refrigerator according to one aspect of the present invention, a portion of the internal combustion engine storage chamber that faces the intake pipe may be formed of a resin panel.

  Since the main flow of cooling air is formed on the intake pipe side, the portion of the internal combustion engine housing chamber that faces the intake pipe comes into contact with the cooling air. As described above, since the portion facing the intake pipe is cooled by the cooling air, a resin panel that is easily damaged by heat can be employed. Resin panels are lighter than metals and are easy to mold. Therefore, by forming a part of the internal combustion engine storage chamber with a resin panel as in the above-described configuration, the internal combustion engine storage chamber can be easily formed and can be reduced in weight.

  A transport refrigerator according to an aspect of the present invention includes a generator that generates electric power using the driving force of the internal combustion engine, and the generator includes a generator inlet that sucks generator cooling air that cools the generator. The generator inlet may take in air from a flow path on the intake pipe side through which the cooling air flows.

  In the above configuration, the generator intake port takes in air from the flow path on the intake pipe side through which the cooling air flows. In other words, the generator intake port takes in air from the main flow of cooling air. Thus, the cooling air that is not affected by the heat generated by the exhaust pipe is supplied to the generator as generator cooling air, so that the generator can be suitably cooled. Therefore, the lifetime of the generator can be extended. In addition, the reliability of the generator can be improved.

  The transport refrigerator according to one aspect of the present invention may be provided on a front surface of a container in which the cooling space is formed.

  According to the present invention, a main flow of cooling air in which the influence of heat generated by the exhaust pipe is suppressed can be formed in the internal combustion engine housing chamber.

1 is a side view of a vehicle to which a transport refrigerator according to an embodiment of the present invention is applied. It is a top view of the vehicle of FIG. It is a top view of the inside of the refrigerator for transportation concerning this embodiment.

  Hereinafter, an embodiment of a transport refrigerator according to the present invention will be described with reference to the drawings. In the figure, FR indicates the front of the vehicle, UP in the figure indicates the upper side of the vehicle, and IN in the figure indicates the inner side in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction in a state of facing the front of the vehicle.

  As shown in FIGS. 1 and 2, a vehicle (transport vehicle) 2 on which a transport refrigerator 1 according to the present embodiment is mounted includes a tractor 3 and a container 4 pulled by the tractor 3. The tractor 3 is a so-called cab-over tractor in which a traveling engine (not shown) is disposed below the cab 5 on which the crew rides. The tractor 3 has a frame 6 extending in the front-rear direction behind the cab 5, and a substantially rectangular parallelepiped container 4 is mounted on the frame 6. The container 4 is disposed such that the front surface 4 a is separated from the rear surface of the cab 5. A cooling space 7 that is cooled by the transport refrigerator 1 is formed inside the container 4, and a load such as a frozen / refrigerated product is loaded in the cooling space 7. The transport refrigerator 1 according to this embodiment is a sub-engine type transport refrigerator equipped with a dedicated sub-engine 11 as a power source.

  On the front surface 4a of the container 4, a transport refrigerator 1 is provided over substantially the entire region in the vehicle width direction. The transport refrigerator 1 is housed in a refrigeration cycle (not shown) that generates cooling air to be supplied into the cooling space 7, a housing 12 that forms an outer shell of the transport refrigerator 1, and the housing 12. And various devices such as the sub-engine 11. The refrigeration cycle is a well-known refrigeration cycle including a compressor, a condenser, an expansion valve, an evaporator, and the like that are not shown, and a condenser fan and an evaporator fan are attached to the condenser and the evaporator, respectively. The compressor, the condenser fan, and the evaporator fan are driven by a compressor motor, a condenser fan motor, and an evaporator fan motor, and each of the motors described later is driven by a sub-engine 11. 25, or drive power is supplied from a commercial power source or the like.

  The casing 12 has a right side wall 13 that defines the right end of the transport refrigerator 1 in the vehicle width direction, a left side wall 14 that defines the left end of the transport refrigerator 1 in the vehicle width direction, and a front side of the transport refrigerator 1. It has a front wall 15 that defines and a rear wall 16 that defines the rear of the transport refrigerator 1. The rear surface of the rear wall 16 is fixed to the front surface 4 a of the container 4. In addition, the rear wall 16 may not be provided in the housing 12 of the transport refrigerator 1, and the rear of the transport refrigerator 1 may be defined by the front surface 4 a of the container 4. That is, the front surface 4 a of the container 4 may also serve as the rear wall 16 of the housing 12. The housing 12 is formed of a resin panel or the like that shields noise generated from the sub-engine 11 accommodated therein. In order to further enhance the sound insulation effect, a sound insulation material may be provided in the housing 12.

  The front wall 15 is disposed at a position separated from the rear wall 16 by a predetermined distance. The separation distance between the front wall 15 and the rear wall 16 is formed short so as not to affect the volume of the container 4. The front wall 15 has a flat plate shape extending substantially parallel to the rear wall 16. As shown in FIGS. 1 and 2, the front wall 15 may be curved so that the length in the front-rear direction decreases from the center in the vehicle width direction toward the outside. By forming it so as to be curved, it is possible to widen the space inside the transport refrigerator 1 while preventing the cab 5 and the transport refrigerator 1 from interfering when the vehicle 2 turns.

  The left side wall 14 connects the left end of the front wall 15 and the left end of the rear wall 16. The left side wall 14 has an introduction opening 17 penetrating in the vehicle width direction on the rear side of the center in the front-rear direction. The right side wall 13 connects the right end of the front wall 15 and the right end of the rear wall 16. Further, a discharge opening (second opening) 18 penetrating in the vehicle width direction is formed in the right side wall 13 on the rear side from the center in the front-rear direction.

  The housing 12 has a partition wall 19 that connects the front wall 15 and the rear wall 16 and separates the space in the housing 12 in the vehicle width direction. A partition wall opening 20 penetrating in the vehicle width direction is formed in the partition wall on the rear side of the center in the front-rear direction. The introduction opening 17, the discharge opening 18, and the partition opening 20 are formed at substantially the same position in the front-rear direction.

  Between the left side wall 14 and the partition wall 19, an electrical box storage chamber 22 in which an electrical box 21 is stored is formed. In other words, the electrical box housing chamber 22 is a space surrounded by the left side wall 14, the partition wall 19, a part of the front wall 15, and a part of the rear wall 16. A control device (not shown) that controls the compressor driven by the sub-engine 11 is accommodated in the electrical box 21. The control device is an electronic component such as an inverter. The electrical box 21 is arranged in the electrical box housing chamber 22 on the front side of the center. That is, the electrical box 21 is arranged such that the distance between the rear surface of the electrical box 21 and the front surface of the rear wall 16 is longer than the distance between the front surface of the electrical box 21 and the rear surface of the front wall 15. On the rear surface of the electrical box 21, a heat sink 23 for cooling the control device accommodated in the electrical box 21 is provided. The heat sink 23 is disposed at substantially the same position in the front-rear direction as the introduction opening 17 and the partition opening 20. The arrangement of the heat sink 23 is not limited to this position, but is preferably arranged on a straight line connecting the introduction opening 17 and the partition opening 20.

  An engine storage chamber (internal combustion engine storage chamber) 27 in which the sub-engine 11 and the like are stored is formed between the right side wall 13 and the partition wall 19. That is, the engine storage chamber 27 is a space surrounded by the right side wall 13, the partition wall 19, a part of the front wall 15, and a part of the rear wall 16. The engine storage chamber front wall 27a that defines the front of the engine storage chamber 27 that is a part of the front wall 15 is formed of a resin panel. The engine storage chamber front wall 27a is configured to be attachable / detachable or openable, and is attached / detached / opened / closed during maintenance of components stored in the engine storage chamber 27. Further, a heat shielding material 28 is provided on substantially the entire area of the rear wall 16 that faces an exhaust system component 32 of the sub-engine 11 described later.

  The sub-engine 11 is generated by an engine main body (internal combustion engine) 30 that burns fuel therein to generate driving force, an intake pipe 31 that supplies combustion air to the engine main body 30, and the engine main body 30. And an exhaust system part 32 composed of an exhaust pipe for exhausting the exhaust gas. Since the exhaust gas generated in the engine main body 30 is high in temperature, the exhaust system parts are high in temperature when the sub-engine 11 is driven. The intake pipe 31 is provided on the front surface of the engine main body 30, and the exhaust system part 32 is provided on the rear surface of the engine main body 30.

  The sub-engine 11 is arranged in the engine storage chamber 27 so as to be separated from the engine storage chamber front wall 27a. That is, a space (a flow passage 29 described later) is formed between the front surface of the sub-engine 11 and the engine accommodating chamber front wall 27a. The sub-engine 11 is disposed behind the center in the engine storage chamber 27. That is, the sub-engine 11 is arranged such that the distance between the rear surface of the sub-engine 11 and the front surface of the rear wall 16 is shorter than the distance between the front surface of the sub-engine 11 and the rear surface of the front wall 27a of the engine storage chamber. ing. In other words, the distance L1 from the central axis C1 in the longitudinal direction of the sub-engine 11 to the rear surface of the front wall 27a of the engine storage chamber is longer than the distance L2 from the central axis C1 to the front surface of the rear wall 16. The engine 11 is arranged. The sub-engine 11 has an engine cooling device (not shown) that circulates and supplies cooling water to the engine body 30. The engine cooling device includes a circulation pump (not shown) that circulates a coolant that cools the engine body, and a pump drive device 33 that drives the circulation pump. The pump drive device 33 is a device composed of, for example, a belt and a pulley. The pump drive device 33 is provided on the left side surface of the engine main body 30 (that is, the surface on the partition wall 19 side), and is driven by rotational energy generated when the engine main body 30 is driven.

  In addition to the sub-engine 11, a generator 25, a battery 26, and the like are housed inside the engine housing chamber 27. The generator 25 is disposed on the right side surface of the engine body 30 (that is, the surface on the right side wall), and converts the rotational energy of the engine body 30 into electrical energy. The electric power generated by the generator 25 is supplied to a motor (not shown), and when the electric power is supplied to the motor, the compressor is driven by the driving force of the motor. Further, the generator 25 has a generator inlet 25a for sucking generator cooling air for cooling the generator. The generator intake port 25a is provided on the right side surface (that is, the surface on the right side wall) of the generator and opens in the right side direction (that is, the right side surface direction). The battery 26 is for starting the sub engine 11 and is used when starting the sub engine 11. The battery 26 is disposed between the generator 25 and the right side wall 13 and between the engine accommodating chamber front wall 27 a and the discharge opening 18.

A fan housing chamber 36 in which a centrifugal fan (blower) 35 is housed is formed between the partition wall 19 and the sub-engine 11. The fan housing chamber 36 is formed so as to protrude from the partition wall 19 into the engine housing chamber 27. The fan housing chamber 36 includes a partition wall 19, a front wall 36 a extending rightward from a region in front of the partition wall opening 20 in the partition wall 19, and a rear wall extending rightward from a region in the partition wall 19 behind the partition wall opening 20. It is a space surrounded on all sides by a wall 36b and a right wall 36c that connects the right end of the front wall 36a and the right end of the rear wall 36b. That is, the fan housing chamber 36 and the electrical box housing chamber 22 communicate with each other through the partition wall opening 20.
The front wall 36a and the rear wall 36b of the fan housing chamber 36 are spaced apart from the front wall 15 and the rear wall 16 of the housing 12 by a predetermined distance and are substantially parallel to each other. Further, the right side wall 36 c of the fan housing chamber 36 is disposed substantially parallel to the partition wall 19. A blower opening (first opening) 37 is formed in the front wall 36 a of the fan housing chamber 36. That is, the fan storage chamber 36 and the engine storage chamber 27 communicate with each other via the blowout opening 37. As described above, the centrifugal fan 35 is housed in the fan housing chamber 36. The centrifugal fan 35 is installed such that the shaft is arranged in the vehicle width direction.

Next, the flow of outside air (cooling air) in the housing 12 will be described with reference to FIG. In FIG. 3, the flow of outside air is indicated by white arrows.
When the sub engine 11 is driven, the centrifugal fan 35 is driven to cool the sub engine 11. When the centrifugal fan 35 is driven, outside air is introduced into the housing 12 through the introduction opening 17. The outside air introduced into the housing 12 first circulates in the electrical box housing chamber 22. The outside air circulating in the electrical box housing chamber 22 exchanges heat with the heat sink 23 and cools the control device and the like housed in the electrical box housing chamber 22 via the heat sink 23. The outside air that has exchanged heat with the heat sink 23 flows into the fan housing chamber 36 through the partition wall opening 20.

  The outside air that has flowed into the fan housing chamber 36 is changed in the flow direction by the centrifugal fan 35 and is introduced into the engine housing chamber 27 through the blowout opening 37. At this time, since the blowout opening 37 is formed in the front wall 36a of the fan housing chamber 36, it is blown forward in the engine housing chamber 27 (that is, blown toward the intake pipe side). Thereby, the outside air blown into the engine storage chamber 27 first circulates along the engine storage chamber front wall 27a. That is, most of the blown outside air flows through the flow passage 29 (in other words, the intake pipe side) formed between the front surface of the sub-engine 11 and the front wall 27a of the engine storage chamber, and the rear surface of the sub-engine 11. And the rear wall 16 (in other words, in the exhaust pipe side), outside air hardly circulates. A part of the outside air blown into the engine storage chamber 27 exchanges heat with the pump drive device 33 provided on the left side surface of the engine main body 30 to cool the pump drive device (specifically, with the belt). After cooling the sliding portion with the pulley, it flows into the flow passage 29.

The outside air flowing through the flow passage 29 collides with the right side wall 13 of the housing 12. At this time, the outside air exchanges heat with the battery 26 to cool the battery 26. The outside air that has collided with the right side wall 13 circulates rearward along the right side wall 13 and is then discharged from the inside of the housing 12 through the discharge opening 18. When the air flows backward along the right side wall 13, a part of the outside air is taken into the generator 25 from the generator inlet 25 a.
In this embodiment, the main stream of the outside air through which most of the outside air introduced into the housing 12 circulates is thus formed.

According to this embodiment, there exist the following effects.
In the present embodiment, when the outside air is introduced into the engine storage chamber 27, the centrifugal fan 35 introduces the outside air toward the intake pipe 31 side rather than the exhaust system component 32 side. Thereby, the main stream of the comparatively low temperature outside air by which the influence of the heat which the high temperature exhaust system component 32 emits was suppressed can be formed in the engine storage chamber 27. Therefore, the pump driving device 33 and the battery 26 arranged in the main stream of the outside air are cooled by the outside air that is not affected by the heat generated by the exhaust system component 32, and thus is suitably cooled. Therefore, the lifetime of the pump drive device 33 and the battery 26 can be extended. Further, the reliability of the pump drive device 33 and the battery 26 can be improved.

  When a fan is arranged downstream of the sub-engine 11 and the air is sucked into the engine storage chamber 27, the air is taken into the fan from the entire engine storage chamber 27, and the engine storage chamber 27. There is a possibility that air on the exhaust system part 32 side is also circulated inside. In the present embodiment, a fan for introducing outside air (specifically, outside air introduced from one side of the engine housing chamber 27 and discharged from the other side) is provided only upstream from the sub-engine 11 to accommodate the engine. It is introduced so as to push outside air into the chamber 27. Therefore, as described above, a main stream of relatively low temperature outside air in which the influence of heat generated by the exhaust system component 32 is suppressed can be suitably formed in the engine storage chamber 27.

  The pump driving device 33 is disposed between the centrifugal fan 35 and the sub-engine 11. As a result, the distance between the pump drive device 33 and the centrifugal fan 35 becomes relatively short. Therefore, the pump drive device 33 can be cooled more suitably.

  Further, the generator intake port 25a takes in air from the main stream of outside air. As a result, the outside air that is not affected by the heat generated by the exhaust system component 32 is supplied to the generator 25 as cooling air for the generator 25, so that the generator 25 can be suitably cooled. Therefore, the lifetime of the generator 25 can be extended. Moreover, the reliability of the generator 25 can be improved.

Moreover, since the electrical equipment box 21 is disposed upstream of the centrifugal fan 35, the outside air before being introduced into the engine housing chamber 27 in which the sub-engine 11 and the like are housed can be brought into contact with the electrical equipment box 21. Therefore, since the electrical equipment box 21 can be cooled without being affected by the sub-engine 11 or the like, the electrical equipment box 21 can be suitably cooled.
In addition, one centrifugal fan 35 cools various devices housed in the engine housing chamber 27 and the electrical equipment box 21. Therefore, compared with the case where a plurality of fans are provided to cool each of them, the configuration can be simplified and the cost can be reduced.

  In the present embodiment, since the centrifugal fan 35 is disposed upstream of the sub-engine 11, the outside air can be reliably introduced toward the intake pipe 31 side. Therefore, the main flow of outside air can be reliably formed on the intake pipe 31 side. When the fan is disposed downstream of the sub-engine 11, when the engine storage chamber front wall 27 a is removed, the engine storage chamber 27 becomes an open space, and there is no outside air flow path in the engine storage chamber 27. End up. Accordingly, the outside air cannot be sucked into the housing 12 by the fan, and the electrical box 21 cannot be cooled. In the present embodiment, since the centrifugal fan 35 is disposed upstream of the engine storage chamber 27, the electrical box 21 can be cooled even when the engine storage chamber front wall 27a is removed.

  Further, the sub-engine 11 is housed in the housing 12. Moreover, the housing | casing 12 is formed with the material which has sound insulation. Thereby, the housing 12 shields the radiation generated from the sub-engine 11 to the outside. Therefore, noise caused by the sub-engine 11 and radiated to the outside of the housing 12 can be reduced.

  Further, the distance between the intake pipe 31 and the front wall 15 of the housing 12 is set to be longer than the distance between the exhaust system component 32 and the rear wall 16 of the housing 12. That is, the flow passage 29 is formed wider than the space formed between the exhaust system component 32 and the rear wall 16. In this way, by forming the flow passage 29 through which the main flow of the outside air flows widely, more outside air that is not affected by the heat generated by the exhaust system component 32 can be introduced into the engine storage chamber 27.

  Further, in the space formed between the exhaust system part 32 and the rear wall 16, heat generated by the exhaust system part 32 stays. In this embodiment, since the heat shield 28 is provided on the rear wall 16 facing the exhaust system component 32, the rear wall 16 and the front surface 4a of the container 4 are damaged by the heat generated by the exhaust system component 32. Can be suppressed.

  Further, the blowout opening 37 and the discharge opening 18 are formed on the opposite sides with the sub-engine 11 or the like interposed therebetween. Thereby, the flow of the outside air introduced into the engine storage chamber 27 can be made relatively long.

  Since the main flow of outside air is formed on the intake pipe 31 side, a resin panel that is easily damaged by heat can be employed as the material of the engine storage chamber front wall 27a. Resin panels are lighter than metals and are easy to mold. Therefore, the housing 12 can be easily molded and the housing 12 can be reduced in weight.

In addition, this invention is not limited to the invention which concerns on the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in this embodiment, the outside air is circulated in the housing 12 by the centrifugal fan 35 and the flow of the outside air is changed. However, the method of circulating the outside air and changing the flow of the outside air is not limited to this. . The outside air may be circulated by an axial fan, and the flow of the outside air may be changed in a desired direction by a duct.
In the present embodiment, the flush mount type transport refrigerator provided on the front surface 4a of the container 4 has been described. However, the arrangement of the transport refrigerator 1 is not limited to this. For example, an undermount type in which a transport refrigerator is mounted below the container 4 may be used.

1 Transport refrigerator 2 Vehicle (transport vehicle)
3 Tractor 4 Container 7 Cooling space 11 Sub engine 12 Housing 13 Right side wall 14 Left side wall 15 Front wall 16 Rear wall 17 Introduction opening 18 Discharge opening 19 Bulkhead 20 Bulkhead opening 21 Electrical box 22 Electrical box housing chamber 23 Heat sink 25 Generator 25a Generator inlet 26 Battery 27 Engine chamber (internal combustion engine chamber)
27a Engine storage chamber front wall 28 Heat shield 29 Flow passage 30 Engine body (internal combustion engine)
31 Intake pipe 32 Exhaust system component 33 Pump drive device 35 Centrifugal fan (blower)
36 Fan compartment 37 Air outlet

Claims (10)

An internal combustion engine that provides power to a compressor used in a refrigerator that cools a cooling space of a transport vehicle;
An intake pipe disposed on one side of the internal combustion engine for supplying combustion air to the internal combustion engine;
An exhaust pipe disposed on the other side of the internal combustion engine for exhausting exhaust gas generated by the internal combustion engine;
An internal combustion engine housing chamber for housing the internal combustion engine, the intake pipe and the exhaust pipe;
A blower for introducing cooling air into the internal combustion engine housing chamber,
The blower is a transport refrigerator that is disposed upstream of the internal combustion engine in the flow of cooling air and introduces the cooling air toward the intake pipe rather than the exhaust pipe. A control device for controlling the driving of the compressor;
An electrical box that houses the control device,
The transporting refrigerator according to claim 1, wherein the electrical box is disposed upstream of the blower in the flow of the cooling air. A circulating pump for circulating a coolant for cooling the internal combustion engine;
A pump driving device for driving the circulation pump,
The transport according to claim 1, wherein the pump drive device is a flow path on the intake pipe side through which the cooling air flows, and is disposed between the blower and the internal combustion engine. Freezer.   The distance between the intake pipe and the inner peripheral surface of the internal combustion engine storage chamber facing the intake pipe is greater than the distance between the exhaust pipe and the internal peripheral surface of the internal combustion engine storage chamber facing the exhaust pipe. The transport refrigerator according to any one of claims 1 to 3, wherein the transport refrigerator is set long.   The transport refrigerator according to any one of claims 1 to 4, wherein a heat shielding material is provided on an inner peripheral surface of the internal combustion engine storage chamber facing the exhaust pipe. The internal combustion engine storage chamber is formed with a first opening through which the cooling air is introduced by the blower and a second opening through which the cooling air is discharged,
The transport refrigerator according to any one of claims 1 to 5, wherein the second opening is formed on the opposite side of the first opening with the internal combustion engine in between. A battery for starting the internal combustion engine,
The transport refrigerator according to any one of claims 1 to 6, wherein the battery is disposed in a flow path on the intake pipe side through which the cooling air flows.   The transport refrigerator according to any one of claims 1 to 7, wherein a portion of the internal combustion engine storage chamber facing the intake pipe is formed of a resin panel. A generator for generating electric power by the driving force of the internal combustion engine;
The generator has a generator inlet for sucking generator cooling air for cooling the generator,
The transport refrigerator according to any one of claims 1 to 8, wherein the generator intake port takes in air from a flow path on the intake pipe side through which the cooling air flows. The transport refrigerator according to any one of claims 1 to 9, which is provided on a front surface of a container in which the cooling space is formed.

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