JP2016205797A - Refrigerator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate a refrigerator even during a stop of an engine, to save an installation space, and to largely reduce the number of constituents, and a time and labor necessary for attachment work, in a refrigeration vehicle or the like of a motor truck.SOLUTION: The outside of a cargo room in which a compressor unit 7 and a capacitor unit 20 are arranged, and the inside of the cargo room in which an evaporator unit 10 is arranged are assembled to a main body frame 9 in a state that the outside and the inside adjoin each other with a cargo room bulkhead 40 interposed therebetween, the main body frame 9 is fit into an attachment opening part 30 which penetratingly formed at a refrigeration container K of a refrigeration vehicle C, and thereby the evaporator unit 10 can be attached to the refrigeration container K in a state that the evaporator unit is arranged in the refrigeration container K, and in a state that the cargo room bulkhead 40 abuts on a periphery of the attachment opening 30 of the refrigeration container K.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular refrigeration apparatus, and more particularly to an integrated vehicular refrigeration apparatus effective for cooling a cargo compartment such as a refrigeration container mounted on a loading platform of a small truck including a light vehicle.

  Conventionally, in small trucks such as light trucks and small trucks equipped with this type of refrigeration system for vehicles, medium trucks, and refrigeration trucks such as large trucks, a compressor (compressor) is generally installed in the engine room of the vehicle. The condenser (condenser) unit is provided and attached to the outer wall or the like of the refrigeration container, and the evaporator (evaporator) unit is installed in the refrigeration container. Therefore, the structure is complicated, and the handling of the refrigerant piping is also complicated. In addition, since the compressor in the engine room stops operating when the engine stops, there are significant restrictions on the use of the refrigerator car.

  By the way, refrigerated vehicles using light trucks that have features such as compact vehicle dimensions, convenient for traffic on narrow roads such as urban alleys, and parking space are also notable. (For example, see Patent Documents 1 and 2).

JP 2002-370518 A JP2015-68626A JP 2000-205728 A

  However, in such a refrigerated vehicle, the size of the luggage compartment as a refrigerated container is also compact, so it is necessary to efficiently load a load. Therefore, as in Patent Documents 1 and 2, when a unitized refrigeration apparatus is installed in the cargo compartment, troublesome wiring installation work can be omitted and installed easily. There was a problem that the space became narrow and the loadable luggage was reduced.

  Therefore, in order to secure the space in the cargo compartment in such a freezing vehicle, a vehicle refrigeration device is known that is disposed outside the cargo compartment by attaching the refrigeration device to the outer wall of the cargo compartment ( For example, see Patent Document 3).

  However, in the refrigerator truck, there is a request to increase the thickness of the heat insulation wall of the cargo compartment from the viewpoint of improving low temperature performance, but there is also a request to make the thickness of the heat insulation wall as thin as possible from the viewpoint of securing the cargo compartment volume. There is a contradiction. Accordingly, there is a problem of how and in what configuration the cargo compartment (refrigeration container) and the refrigeration apparatus, which are basic components, are arranged within the dimensional restrictions described above. Therefore, in patent document 3, in order to ensure the attachment stability of a freezing apparatus, the thickness of the heat insulation wall had to be increased, and as a result, there was a possibility of narrowing the cargo compartment volume.

  Furthermore, in a refrigeration vehicle that uses a vehicle engine to drive a refrigeration system, the refrigeration system also stops when the engine is stopped. For this reason, when the vehicle is stopped for delivery or the like, the temperature in the cargo compartment may change and the low temperature state may not be maintained. Therefore, the idling state is maintained even when the vehicle is stopped, and the low temperature state in the cargo compartment is maintained, but this time, an increase in fuel consumption and exhaust gas in the idling state causes problems with fuel efficiency and the environment. End up.

  The present invention has been made in view of the above-described problems. The refrigeration apparatus can be operated even when the engine is stopped, and the installation space can be saved, and the time and labor required for the installation work can be reduced. An object of the present invention is to provide a vehicular refrigeration apparatus that can be significantly reduced.

In order to solve the above-described problems, a vehicle refrigeration apparatus according to the present invention includes:
A vehicle refrigeration apparatus for cooling a cargo compartment mounted on a vehicle bed,
A compressor unit having an electric compressor for compressing the refrigerant;
An evaporator unit that cools the air in the cargo compartment by exchanging heat with the refrigerant;
A condenser unit that releases heat from the refrigerant compressed by the compressor unit by exchanging heat with outside air;
A main body frame in which the compressor unit, the evaporator unit and the capacitor unit are assembled and integrated;
Driven by the engine of the vehicle, a generator dedicated to the compressor unit, the evaporator unit and the capacitor unit;
A battery charged by the generator;
A controller that controls at least the operation of the electric compressor;
A power converter that inputs power using the battery as a power source, converts the supplied power into power for driving the electric compressor based on control by the control unit, and
An attachment opening corresponding to the main body frame is provided through the cargo compartment at an upper position in the forward direction of the vehicle,
The body frame is
An external side of the luggage compartment in which the compressor unit and the capacitor unit are disposed;
The cargo compartment portion side where the evaporator unit is disposed is integrated with the cargo compartment partition wall portion adjacent to each other,
The main body frame is inserted into the evaporator unit side and fitted into the mounting opening, so that the evaporator unit is disposed inside the cargo compartment, and the cargo compartment partition is disposed in the cargo compartment. It is attached to the luggage compartment in a state of being in contact with the periphery of the attachment opening.

  According to this, the evaporator unit is disposed inside the refrigeration container simply by attaching the main body frame in which the compressor unit, the evaporator unit and the condenser unit are integrated and assembled to the mounting opening of the cargo compartment (refrigeration container). A vehicle refrigeration system can be attached. For this reason, it is possible to greatly reduce the components, time and labor required for mounting the vehicle refrigeration apparatus. Moreover, it can apply to various vehicles only by preparing the attachment opening part according to the shape of a main body frame in a freezing container, and can improve versatility. In addition, since the functions are completed for each component (compressor unit, evaporator unit, condenser unit, etc.), it is possible to flexibly respond to design changes and trial changes of each element, and to expand design flexibility. Also, maintenance is excellent. Moreover, the integration of the refrigerant pipes and the like can be simplified by integration, and the overall apparatus can be made compact, so that the installation space for the compressor unit, the evaporator unit and the condenser unit can be reduced, and the inside of the refrigeration container can be reduced. The area occupied by the evaporator unit in the space can be reduced. Furthermore, since a dedicated battery charged by a dedicated generator is provided, there is no need to drive using a conventional vehicle engine. In other words, the operation of the vehicle refrigeration apparatus does not need to depend on the engine. Therefore, even if the engine is stopped when the vehicle is stopped for delivery or the like, the vehicle refrigeration apparatus can continue to operate independently, so that the low temperature state in the refrigeration container can be maintained. That is, since it is not necessary to be in an idling state even when the vehicle is stopped, an increase in fuel consumption and environmental pollution caused by exhaust gas can be avoided.

  Further, in the main body frame, the outer side of the cargo compartment in which the compressor unit and the condenser unit are arranged, and the inner side of the cargo compartment in which the evaporator unit is arranged are partitioned via the cargo compartment partition part, and the cargo compartment partition part is Since it is attached in a state of being in contact with the periphery of the loading opening of the cargo compartment, the surroundings of the mounting opening can be covered with a cargo compartment partition, and the cold air in the cargo compartment can be prevented from leaking from the mounting opening. Can be secured.

Furthermore, in the present invention,
The body frame is
It is preferable that the outside of the cargo compartment and the inside of the cargo compartment are arranged with a substantially equal weight balance around the cargo compartment partition.

  According to this, the cargo compartment exterior side where the compressor unit and the capacitor unit are arranged and the cargo compartment side where the evaporator unit is arranged are arranged with a substantially equal weight balance around the cargo compartment partition in the main body frame. Therefore, in the state attached to the luggage compartment, the weight distribution can be made uniform between the inside and outside of the luggage compartment via the attachment opening, and the bending moment to the attachment opening can be reduced. .

Furthermore, in the present invention,
A charger that takes in electric power from a commercial power source, converts the AC output into direct current, and rectifies is further provided.
It is preferable that the battery is charged by the generator or the charger.

  According to this, by providing a charger that takes in electric power from a commercial power source as a means for charging the battery, the battery can be charged using a dedicated generator driven by the engine while traveling and a commercial power source is secured. When possible, the battery can be charged by the charger 8 that takes in electric power from the commercial power source without driving the engine of the vehicle.

  At this time, it is preferable that the capacitor unit is covered with a casing provided in the main body frame, and the casing is provided with an intake port for taking in the outside air from the front in the traveling direction. Moreover, it is preferable that the said capacitor | condenser unit is covered with the casing provided in the said main body flame | frame, and the said heat sink part for discharging | emitting the said heat upwards is provided in the said casing.

  According to this, it is easy to take in wind (outside air) from the front of the vehicle, and the condenser (condenser) can be smoothly blown out. Therefore, it is excellent in heat dissipation and can improve the heat exchange efficiency in the condenser.

  As described above, according to the present invention, the refrigeration apparatus can be operated even when the engine is stopped, the installation space can be saved, and the components, time and labor required for the installation work are greatly reduced. Can be reduced.

It is the schematic which shows one Embodiment of the refrigeration apparatus for vehicles by this invention, and shows the example of application with which the light truck refrigeration vehicle was mounted | worn. It is a perspective view which shows the refrigeration apparatus for vehicles of this embodiment. It is a top view which shows the refrigeration apparatus for vehicles of this embodiment seeing from upper direction. It is a side view which shows the refrigeration apparatus for vehicles of this embodiment. It is a fragmentary sectional view which shows the attachment state of the refrigeration apparatus for vehicles of FIG. It is a block diagram which shows schematic structure of the refrigeration apparatus for vehicles of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 6 show an embodiment of a vehicle refrigeration apparatus according to the present invention. The vehicle refrigeration apparatus 1 according to the present embodiment is a refrigeration that cools (that is, freezes or refrigerates) the inside of a refrigeration container K as a cargo compartment mounted on a loading platform of a small truck such as a small truck including a light truck. The present invention is applied to the apparatus and is effective in reducing the installation space and greatly reducing the components, time and labor required for the installation work. In the following description, the front of the vehicle in the traveling direction indicates the left direction on the paper surface of FIG. 1, and the upper side indicates the upward direction on the paper surface of FIG. 1. Moreover, although the case where it applies to the refrigerator car C using small lorry vehicles, such as a light truck and a small truck, is described as an example, it is not restricted to this. However, by applying to the small lorry as described above, it is possible to obtain an advantage that a small cargo space unique to the small lorry can be effectively utilized.

<System configuration>
As shown in FIGS. 1-6, the refrigeration apparatus 1 for vehicles of this embodiment is attached to the refrigeration container K of the refrigeration vehicle C using the above-mentioned small truck, The compressor unit 7 which construct | assembles a refrigeration cycle The capacitor unit 20 and the evaporator unit 10 are assembled in a state of being integrated with the main body frame 9.

  In the main body frame 9, a cargo compartment partition wall portion 40 is interposed at a boundary portion between a cargo compartment external side where the compressor unit 7 and the capacitor unit 20 are arranged and a cargo compartment internal side where the evaporator unit 10 is arranged. The cargo compartment partition wall 40 is the boundary, and the cargo compartment exterior side and the cargo compartment interior side are arranged so that the weight balance between them is substantially equal. Further, when the main body frame 9 is attached to the refrigerated container K, the cargo compartment partition 40 abuts along the outer wall surface of the refrigerated container K, and the main body frame 9 closes an attachment opening 30 described later. (See FIG. 5).

  Further, the vehicle refrigeration apparatus 1 takes in electric power from a generator 4 (alternator) driven by an engine (not shown) of the refrigeration vehicle C and a commercial power supply (AC100V), and converts the AC output into DC to rectify the charge. Based on the control unit 8, the battery 3 (sub-battery) charged by the generator 4 or the charger 8, the drive unit 25 for controlling the operation of the compressor 22 provided in the compressor unit 7, and the control by the drive unit 25. A DC / DC converter as a power conversion device that converts (boosts) and supplies power (for example, 12 V or 24 V) input from the battery 3 as power supply to power (for example, 300 V) for driving the compressor 22 2 is provided.

The refrigerated vehicle C is driven by an engine and generates electric power for use in various auxiliary equipments (audio / air conditioners, etc.) of the vehicle, or charges a battery 5 (main battery). Machine 6 (alternator) is provided separately.
However, in the case of the vehicular refrigeration apparatus 1 of the present embodiment, the dedicated battery 3 and the generator 4 are provided, and the compressor 22 driven by the battery 3 is also driven by a conventional engine. Since it is not a compressor, it is not arranged in the engine room, but is arranged as a compressor unit 7 together with the capacitor unit 20 on the exterior side of the main body frame 9 in the luggage compartment. Therefore, the operation of the vehicle refrigeration apparatus 1 does not depend on the driving / stopping of the engine. In addition, since the compressor unit 7, the evaporator unit 10, and the condenser unit 20 are integrated, there is an advantage that the piping of the refrigeration cycle can be simplified.

<Configuration of the evaporator unit 10>
The evaporator unit 10 is a part that cools the internal space (loading chamber) of the refrigeration container K, and includes an evaporator 11 (evaporator), an evaporator fan 12, and the like, and is attached to the refrigeration container K.

  The evaporator 11 heat-exchanges the refrigerant from the condenser unit 20 and the air in the refrigeration container K, thereby evaporating the refrigerant and cooling the air. The evaporator fan 12 is made of, for example, a turbo fan, and is rotated by the evaporator fan motor 12a to send the air cooled by the evaporator 11 into the refrigeration container K. The first temperature sensor 13 detects the temperature in the refrigerated container K and sends a signal corresponding to the detected temperature to the control unit 16 and the drive unit 25 described later.

  Specifically, a mounting opening 30 corresponding to the inside of the cargo compartment in which the evaporator unit 10 integrated with the main body frame 9 is disposed is provided at an upper position in the forward direction in the refrigerated container K. . And the main body frame 9 is attached in the state which has arrange | positioned the said evaporator unit 10 in the inside of the freezing container K by inserting the evaporator unit 10 side with respect to this attachment opening part 30, and being fitted.

<Configuration of capacitor unit 20>
Next, the capacitor unit 20 will be described. The condenser unit 20 is a part that performs heat exchange of the refrigerant outside (outdoor) of the refrigeration container K, and includes a condenser 23 (condenser), a fan unit (condenser fan 24, condenser fan motor 24a), an expansion valve (not shown) It is comprised by components, such as an expansion valve and a 2nd temperature sensor (not shown).

  The condenser 23 exchanges heat between the high-temperature and high-pressure refrigerant and the outside air to make the refrigerant liquid. The condenser fan 24 is rotated by a condenser fan motor 24a (see FIGS. 2 and 3), sucks air from the internal space of the capacitor unit 20 (lower side of the drawing in FIG. 5), and moves outward (upward on the drawing in FIG. 5). And release.

  The expansion valve injects liquid refrigerant in a high-temperature / high-pressure state by the condenser 23 to reduce the pressure, and forms a low-temperature / low-pressure mist to make the liquid refrigerant easy to vaporize (evaporate). (Promotes vaporization of refrigerant).

  The capacitor unit 20 is disposed outside the cargo compartment of the main body frame 9, and the upper surface of the capacitor 23 is inclined downward from the front of the vehicle to the rear. The capacitor fan 24 and the capacitor fan motor are superimposed on the upper surface. A fan unit 24a is attached. And it attaches in the state which the loading compartment partition part 40 of the main body flame | frame 9 contact | abutted to the periphery of the attachment opening part 30 drilled in the upper side of the surface ahead of the advancing direction in the freezing container K. FIG.

<Configuration of compressor unit 7>
Next, the configuration of the compressor unit 7 will be described. The compressor unit 7 is composed of components such as an accumulator 21 and a compressor 22 (electric compressor). The accumulator 21 functions as a refrigerant reservoir and is an element for returning the gaseous refrigerant to the compressor 22. The compressor 22 is driven by the battery 3 dedicated to the vehicular refrigeration apparatus 1 and compresses a gaseous refrigerant into a high-temperature and high-pressure gas.

  The compressor unit 7 is disposed outside the cargo compartment of the main body frame 9 and is disposed in the vicinity of the capacitor unit 20. Therefore, the compressor unit 7 is attached via the main body frame 9 so as to be positioned above the roof of the cab (cabinet) in the refrigerator car C.

  Although not shown here, the compressor unit 7 and the capacitor unit 20 are covered with a casing having a rectangular parallelepiped shape whose plane is trapezoidal and whose upper surface is inclined downward from the rear to the front of the vehicle. ing. The casing is provided with an intake port for taking in outside air on the front side located in front of the traveling direction. In addition, an air outlet is formed on the upper surface of the casing, and functions as a heat radiating portion for releasing heat upward.

  A fan unit including a condenser fan 24 and a condenser fan motor 24a faces the air outlet. And the above-mentioned various components in the compressor unit 7 and the capacitor | condenser unit 20 are arrange | positioned in this casing. Thus, the refrigeration vehicle C is mounted via the main body frame 9 above the roof of the cab (cabinet) so that the intake port faces forward and the exhaust port faces upward. For this reason, outside air is taken into the capacitor unit 20 from the intake port, and then guided from the lower surface through the inside of the capacitor 23 to the blower port. And it discharges toward the advancing direction rear side (above freezing container K) of freezer car C through a blower opening. In this manner, the propeller fan 24 can generate an air flow and exchange heat with the condenser 23.

  At this time, the casing is preferably made of, for example, FRP (Fiberglass Reinforced Plastic) resin and has a shape that can be easily removed. Furthermore, it is preferable that the casing has a structure that can be opened and closed using a mechanism such as a hinge at the front part or the rear part in the traveling direction. Thereby, since it can be set as the structure which can be opened and closed easily like an engine hood, the structure excellent in maintainability is realizable. Moreover, such a casing is provided with an intake port on the front surface and a ventilation port functioning as a heat radiating portion on the upper surface, so that it is easy to take in wind (outside air) from the front of the vehicle, and the capacitor 23 can be smoothly blown out. Therefore, heat dissipation is excellent, and the heat exchange efficiency in the capacitor 23 can be improved.

<Other configurations>
The battery 3 functions as an operation power source for the vehicular refrigeration apparatus 1. The battery 3 of the present embodiment is separate from the main battery 5 that supplies electric power when the engine mounted on the refrigerator C is started, and is composed of, for example, a lead battery or the like that is set at a power supply voltage of DC12V. The evaporator fan motor 12 a and the capacitor fan motor 24 a described above operate at DC 12 V corresponding to the rated voltage of the battery 3.
The DC / DC converter 2 boosts the DC 12V power source from the battery 3 to a voltage suitable for the operation of the compressor 22. In this embodiment, DC12V is boosted to DC300V.

  Although not shown here, the vehicular refrigeration apparatus 1 includes the switch group 14, the display unit 15, and the control unit 16 in the cabin (cab) of the refrigeration vehicle C (for example, in the vicinity of the dash panel near the driver's seat). It has. The switch group 14 includes various switches such as an ON / OFF switch for instructing operation start or operation stop. Moreover, the display part 15 displays the preset temperature, voltage, etc. of the refrigeration apparatus 1 for vehicles, for example.

  The control unit 16 controls various operations in the vehicular refrigeration apparatus 1. For example, the display unit 14 is controlled to display various types of information, the detected temperature is recognized based on the detection signal from the first temperature sensor 13, and the fan motor is controlled.

  The drive unit 25 is configured to be able to communicate with the control unit 16 and transmits and receives necessary information to and from the control unit 16. The drive unit 25 is disposed outside the cargo compartment of the main body frame 9 and performs various controls in the vehicular refrigeration apparatus 1. For example, the drive unit 25 controls the drive of the compressor 22 based on the control signal transmitted from the control unit 16, and controls the operations of the evaporator fan motor 12a and the condenser fan motor 24a.

  The refrigerant after absorbing heat is sent to the compressor 22 and compressed. As a result, the refrigerant again becomes a high-temperature and high-pressure gas. This high-temperature and high-pressure refrigerant is guided to the condenser 23 to exchange heat with the outside air. By this heat exchange, the heat absorbed by the refrigerant is released to the outside air. The liquefied refrigerant delivered from the condenser 23 is decompressed by the expansion valve, and vaporization is promoted. Then, the refrigerant from the expansion valve is sent to the evaporator 11 and used again for cooling the air.

<Summary>
As described above, the vehicle refrigeration apparatus 1 of the present embodiment compresses the evaporator unit 10 that cools the air in the refrigeration container K mounted on the loading platform of the refrigeration vehicle C by heat exchange with the refrigerant, and compresses the refrigerant. The compressor unit 7 that performs heat exchange with the outside air and the condenser unit 20 that releases heat from the refrigerant that has become high temperature and high pressure in the compressor unit 7 are integrally assembled to the main body frame 9. The refrigerated container K is provided with a mounting opening 30 corresponding to the main body frame 9 at an upper position in front of the traveling direction of the vehicle C, and the main body frame 9 is fitted into the mounting opening 30. The evaporator unit 10 is attached in a state where it is disposed inside the refrigerated container K.

  Thus, the evaporator unit 10 can be placed inside the refrigeration container K simply by attaching the main body frame 9 in which the compressor unit 7, the evaporator unit 10, and the condenser unit 20 are integrated and assembled to the attachment opening 30 of the refrigeration container K. The vehicle refrigeration apparatus 1 can be attached in the disposed state. For this reason, it is possible to greatly reduce the components, time and labor required for mounting the vehicle refrigeration apparatus 1.

  Moreover, it can apply to various vehicles only by preparing the attachment opening part 30 according to the shape of the main body frame in the freezing container K, and can improve versatility. Furthermore, since the function is completed for each component (compressor unit 7, evaporator unit 10, capacitor unit 20, etc.), it is possible to flexibly respond to design changes, trial changes, etc. of each element, and widen the design flexibility. In addition, it has excellent maintainability.

  In addition, the refrigerant piping is shortened by the integration, the arrangement can be simplified, and the apparatus as a whole can be made compact. Therefore, the mounting space for the compressor unit 7, the evaporator unit 10, and the capacitor unit 20 can be reduced. Furthermore, since the vehicle refrigeration apparatus 1 includes a battery 3 that is charged by a dedicated generator 4 or a charger 8 that takes in power from a commercial power source as a power source, a compressor using a conventional vehicle engine is used. There is no need to drive. In other words, the operation of the vehicle refrigeration apparatus 1 does not have to depend on the engine. Therefore, even if the engine is stopped when stopping due to delivery or the like, the vehicle refrigeration apparatus 1 can continue to operate independently, so that the low temperature state in the refrigeration container K can be maintained. That is, since it is not necessary to be in an idling state even when the vehicle is stopped, an increase in fuel consumption and environmental pollution caused by exhaust gas can be avoided.

  Further, in the main body frame 9, the exterior side of the cargo compartment in which the compressor unit 7 and the capacitor unit 20 are disposed and the interior of the cargo compartment in which the evaporator unit 10 is disposed are adjacent to each other with the cargo compartment partition wall 40 interposed therebetween. By being integrated and assembled in a state, the luggage compartment exterior side and the compartment interior side are partitioned in the main body frame 9 via the cargo compartment partition 40. The cargo compartment partition wall 40 is attached in a state of being in contact with the periphery of the attachment opening 30 of the refrigeration container K, and the main body frame 9 formed in the attachment opening 30 in substantially the same shape as the attachment opening 30. Is inserted. For this reason, since the periphery of the attachment opening 30 can be covered with the cargo compartment partition 40, the attachment opening 30 can be completely sealed by the cargo compartment partition 40 and the main body frame 9, and thus the refrigeration container. The sealing property of K can be secured.

  Further, in the main body frame 9, the outside of the cargo compartment in which the compressor unit 7 and the capacitor unit 20 are arranged and the cargo compartment inner side in which the evaporator unit 10 is arranged are substantially uniform around the cargo compartment partition 40. Since they are arranged in a weight balance, the weight distribution can be made uniform between the inside and the outside of the refrigeration container K via the attachment opening 30 when attached to the refrigeration container K. The bending moment can be reduced. Therefore, the reinforcement member etc. which were conventionally provided in the ceiling part etc. of the luggage compartment inside become unnecessary.

  Furthermore, by providing a charger 8 that takes in electric power from a commercial power source as means for charging the battery 3, the battery 3 can be charged using a dedicated generator 4 driven by the engine during traveling, and the commercial power source is In the case where it can be secured, the battery can be charged by the charger 8 that takes in electric power from the commercial power source without driving the engine of the vehicle.

  Moreover, the compressor unit 7 and the condenser unit 20 are covered with a casing provided in the main body frame 9, and the casing is provided with an intake port for taking in outside air from the front in the traveling direction. In addition, since the casing is provided with a heat radiating portion for releasing heat upward, it is easy to take in wind (outside air) from the front of the vehicle C, and the capacitor 23 can be smoothly blown out. it can. Therefore, heat dissipation is excellent, and the heat exchange efficiency in the capacitor 23 can be improved.

<Modification>
In addition, this invention is not limited to said embodiment, A various deformation | transformation is possible in the range which does not deviate from the meaning, The equivalent is also contained.

  For example, the vehicle is not limited to the refrigerated vehicle C using a small lorry such as a light truck or a light truck. Other types of vehicles such as automobiles (medium-sized trucks, large-sized trucks, etc.), pickup type trucks, van type vehicles, leisure vehicles such as campers, and special vehicles may be used.

  Further, in the above-described embodiment, the case where a lead battery or the like determined to a DC12V power supply voltage is applied as the battery 3 is described as an example, but the present invention is not limited to this. Needless to say, the power supply voltage may be determined to be 24 VDC.

1 Vehicle refrigeration system 2 DC / DC converter (power converter)
3 Battery (sub battery)
4 Generator (alternator)
5 Main battery 6 Generator (alternator)
7 Compressor unit 8 Battery charger 9 Body frame 10 Evaporator unit 20 Capacitor unit 11 Evaporator
DESCRIPTION OF SYMBOLS 12 Evaporator fan 12a Evaporator fan motor 13 Temperature sensor 14 Switch group 15 Display part 16 Control part 21 Accumulator 22 Compressor (compressor)
23 Condenser
24 Capacitor fan 24a Capacitor fan motor 25 Drive unit 30 Mounting opening 40 Cargo compartment partition C C Refrigeration vehicle (vehicle)
K Refrigeration container (loading room)

According to this, the evaporator unit is disposed inside the refrigeration container simply by attaching the main body frame in which the compressor unit, the evaporator unit and the condenser unit are integrated and assembled to the mounting opening of the cargo compartment (refrigeration container). A vehicle refrigeration system can be attached. For this reason, it is possible to greatly reduce the components, time and labor required for mounting the vehicle refrigeration apparatus. Moreover, it can apply to various vehicles only by preparing the attachment opening part according to the shape of a main body frame in a freezing container, and can improve versatility. In addition, since the functions are completed for each component (compressor unit, evaporator unit, condenser unit, etc.), it is possible to flexibly respond to design changes and specification changes of each element, and to expand design flexibility. Also, maintenance is excellent. Moreover, the integration of the refrigerant pipes and the like can be simplified by integration, and the overall apparatus can be made compact, so that the installation space for the compressor unit, the evaporator unit and the condenser unit can be reduced, and the inside of the refrigeration container can be reduced. The area occupied by the evaporator unit in the space can be reduced. Furthermore, since a dedicated battery charged by a dedicated generator is provided, there is no need to drive the refrigeration apparatus using a conventional vehicle engine. In other words, the operation of the vehicle refrigeration apparatus does not need to depend on the engine. Therefore, even if the engine is stopped when the vehicle is stopped for delivery or the like, the vehicle refrigeration apparatus can continue to operate independently, so that the low temperature state in the refrigeration container can be maintained. That is, since it is not necessary to set the vehicle engine to an idling state even when the vehicle is stopped, an increase in fuel consumption and environmental pollution due to exhaust gas can be avoided.

According to this, by providing a charger for taking in electric power from a commercial power source as a means for charging the battery, the battery can be charged using a dedicated generator driven by the engine while traveling, and while the vehicle is stopped If the commercial power source can be secured, without driving the engine of the vehicle, the battery can be charged by charger draw power from the commercial power supply.

In the main body frame 9, a luggage compartment partition wall 40 is interposed at a boundary portion between the outside of the cargo compartment where the compressor unit 7 and the capacitor unit 20 are arranged and the cargo compartment side where the evaporator unit 10 is arranged. The cargo compartment partition wall 40 is the boundary, and the cargo compartment exterior side and the cargo compartment interior side are arranged so that the weight balance between them is substantially equal. The main body frame 9 when Ru mounted on refrigerated container K, along the outer wall surface of the refrigerating container K abuts cargo room partition wall 40 of the main body frame 9 to close the mounting opening 30 to be described later (See FIG. 5).

The vehicle refrigeration apparatus 1 takes in power from a refrigeration generator 4 (alternator) driven by an engine (not shown) of the refrigeration vehicle C and a commercial power supply (AC 100 V), and converts the AC output into DC. a charger 8 for rectifying, the refrigeration system battery 3 (the sub-battery) that is charged by the refrigeration system generator 4 or the battery charger 8, a drive unit 25 for controlling the operation of the compressor 22 provided in the compressor unit 7 Based on the control by the drive unit 25, the power (for example, 12V or 24V) input using the battery 3 for the refrigeration apparatus as a power source is converted (boosted) into power (for example, 300V) for driving the compressor 22. And a DC / DC converter 2 as a power conversion device to be supplied.

The refrigerator C is driven by an engine and generates electric power used by various auxiliary machines (audio / air conditioner, etc.) of the vehicle or charges a vehicle battery 5 (main battery) . A generator 6 (alternator) is separately provided.
However, in the case of the vehicular refrigeration apparatus 1 of this embodiment, the refrigeration apparatus battery 3 and the refrigeration apparatus generator 4 are provided, and the compressor 22 driven by the refrigeration apparatus battery 3 is also conventional. Since it is not a mechanical compressor driven by the engine, it is not disposed in the engine room, but is disposed as the compressor unit 7 along with the condenser unit 20 on the exterior side of the luggage compartment of the main body frame 9. Therefore, the operation of the vehicle refrigeration apparatus 1 does not depend on the driving / stopping of the engine. In addition, since the compressor unit 7, the evaporator unit 10, and the condenser unit 20 are integrated, there is an advantage that the piping of the refrigeration cycle can be simplified.

Specifically, a mounting opening 30 corresponding to the inside of the cargo compartment in which the evaporator unit 10 integrated with the main body frame 9 is disposed is provided at an upper position in the forward direction in the refrigerated container K. . And the main body frame 9 is in the state which has arrange | positioned the said evaporator unit 10 in the inside of the refrigeration container K by inserting the evaporator unit 10 side with respect to this attachment opening part 30, and fitting the luggage compartment partition part 40. It is attached.

The capacitor unit 20 is disposed outside the cargo compartment of the main body frame 9, and the upper surface of the capacitor 23 is inclined downward from the front of the vehicle to the rear. The capacitor fan 24 and the capacitor fan motor are superimposed on the upper surface. A fan unit 24a is attached. And it attaches in the state which the main body flame | frame 9 contact | abutted to the periphery of the attachment opening part 30 drilled in the upper side of the surface ahead of the advancing direction in the freezing container K. FIG.

<Configuration of compressor unit 7>
Next, the configuration of the compressor unit 7 will be described. The compressor unit 7 is composed of components such as an accumulator 21 and a compressor 22 (electric compressor). The accumulator 21 functions as a refrigerant reservoir and is an element for returning the gaseous refrigerant to the compressor 22. The compressor 22 is driven by the refrigeration device battery 3 dedicated to the vehicular refrigeration device 1 and compresses gaseous refrigerant into a high-temperature and high-pressure gas.

<Other configurations>
The refrigeration apparatus battery 3 functions as an operating power source for the vehicular refrigeration apparatus 1. The battery 3 for the refrigeration apparatus of the present embodiment is separate from the vehicle battery 5 that supplies power when starting the engine mounted on the refrigeration vehicle C. For example, the battery 3 for the refrigeration apparatus is a lead battery that is set to a power supply voltage of DC12V. Become. The evaporator fan motor 12a and the condenser fan motor 24a described above operate at DC 12V corresponding to the rated voltage of the battery 3 for the refrigeration apparatus .
The DC / DC converter 2 boosts the DC 12 V power source from the refrigeration apparatus battery 3 to a voltage suitable for the operation of the compressor 22. In this embodiment, DC12V is boosted to DC300V.

<Summary>
As described above, the vehicle refrigeration apparatus 1 of the present embodiment compresses the evaporator unit 10 that cools the air in the refrigeration container K mounted on the loading platform of the refrigeration vehicle C by heat exchange with the refrigerant, and compresses the refrigerant. The compressor unit 7 that performs heat exchange with the outside air and the condenser unit 20 that releases heat from the refrigerant that has become high temperature and high pressure in the compressor unit 7 are integrally assembled to the main body frame 9. Then, in the refrigerated container K, the attachment openings 30 corresponding to the luggage compartment partition wall portion 40 of the main body frame 9 above the position in the traveling direction ahead of the vehicle C is formed through each, luggage compartment partition wall 40, mounted By fitting in the opening 30, the evaporator unit 10 is attached in a state of being placed inside the refrigerated container K.

As a result, the evaporator unit 10 is simply attached to the attachment opening 30 of the refrigeration container K by attaching the cargo compartment partition 40 of the main body frame 9 in which the compressor unit 7, the evaporator unit 10, and the condenser unit 20 are integrally assembled. The vehicle refrigeration apparatus 1 can be attached in a state of being disposed inside the refrigeration container K. For this reason, it is possible to greatly reduce the components, time and labor required for mounting the vehicle refrigeration apparatus 1.

Moreover, it can apply to various vehicles only by preparing the attachment opening part 30 according to the shape of the main body frame in the freezing container K, and can improve versatility. In addition, since the functions are completed for each component (compressor unit 7, evaporator unit 10, capacitor unit 20, etc.), it is possible to flexibly respond to design changes and specification changes of each element, and widen the freedom of design. In addition, it has excellent maintainability.

In addition, the refrigerant piping is shortened by the integration, the arrangement can be simplified, and the apparatus as a whole can be made compact. Therefore, the mounting space for the compressor unit 7, the evaporator unit 10, and the capacitor unit 20 can be reduced. Further, since the vehicular refrigeration apparatus 1 includes a refrigeration apparatus battery 3 that is charged by a dedicated refrigeration apparatus generator 4 or a charger 8 that takes in power from a commercial power source as a power source, There is no need to use an engine to drive the compressor. In other words, the operation of the vehicle refrigeration apparatus 1 does not have to depend on the engine. Therefore, even if the engine is stopped when stopping due to delivery or the like, the vehicle refrigeration apparatus 1 can continue to operate independently, so that the low temperature state in the refrigeration container K can be maintained. That is, since it is not necessary to set the vehicle engine to an idling state even when the vehicle is stopped, an increase in fuel consumption and environmental pollution due to exhaust gas can be avoided.

Further, in the main body frame 9, the exterior side of the cargo compartment in which the compressor unit 7 and the capacitor unit 20 are disposed and the interior of the cargo compartment in which the evaporator unit 10 is disposed are adjacent to each other with the cargo compartment partition wall 40 interposed therebetween. By being integrated and assembled in a state, the luggage compartment exterior side and the compartment interior side are partitioned in the main body frame 9 via the cargo compartment partition 40. The cargo compartment partition 40 is attached in a state of being in contact with the periphery of the attachment opening 30 of the refrigeration container K, and the cargo compartment partition formed in the attachment opening 30 in substantially the same shape as the attachment opening 30. Part 40 is fitted. Therefore, since the periphery of the mounting opening 30 can be covered by the main body frame 9, of the luggage compartment partition wall 40 and the body frame 9 of the mounting opening 30 can be completely sealed by, thus freezing containers K Sealability can be secured.

Further, by providing the charger 8 draw power from a commercial power source as a means for charging the refrigeration system battery 3, the refrigeration unit battery using the generator 4 refrigeration system dedicated during traveling driven by the engine 3 can be charged and when the commercial power source can be secured while the vehicle is stopped, the battery 3 for the refrigeration apparatus can be charged by the charger 8 that takes in power from the commercial power source without driving the engine of the vehicle.

In the above-described embodiment, the case where a lead battery or the like determined at a DC12V power supply voltage is applied as the refrigeration apparatus battery 3 is described as an example, but the present invention is not limited thereto. Needless to say, the power supply voltage may be determined to be 24 VDC according to the vehicle type.

1 Vehicle refrigeration system 2 DC / DC converter (power converter)
3 Battery for refrigeration equipment (battery)
4 Generator for refrigeration equipment ( generator )
5 Battery for vehicle 6 Generator for vehicle 7 Compressor unit 8 Charger 9 Body frame 10 Evaporator unit 20 Capacitor unit 11 Evaporator
DESCRIPTION OF SYMBOLS 12 Evaporator fan 12a Evaporator fan motor 13 Temperature sensor 14 Switch group 15 Display part 16 Control part 21 Accumulator 22 Compressor (compressor)
23 Condenser
24 Capacitor fan 24a Capacitor fan motor 25 Drive unit 30 Mounting opening 40 Cargo compartment partition C C Refrigeration vehicle (vehicle)
K Refrigeration container (loading room)

Claims (5)

A vehicle refrigeration apparatus for cooling a cargo compartment mounted on a vehicle bed,
A compressor unit having an electric compressor for compressing the refrigerant;
An evaporator unit that cools the air in the cargo compartment by exchanging heat with the refrigerant;
A condenser unit that releases heat from the refrigerant compressed by the compressor unit by exchanging heat with outside air;
A main body frame in which the compressor unit, the evaporator unit and the capacitor unit are assembled and integrated;
Driven by the engine of the vehicle, a generator dedicated to the compressor unit, the evaporator unit and the capacitor unit;
A battery charged by the generator;
A controller that controls at least the operation of the electric compressor;
A power converter that inputs power using the battery as a power source, converts the supplied power into power for driving the electric compressor based on control by the control unit, and
An attachment opening corresponding to the main body frame is provided through the cargo compartment at an upper position in the forward direction of the vehicle,
The body frame is
An external side of the luggage compartment in which the compressor unit and the capacitor unit are disposed;
The cargo compartment portion side where the evaporator unit is disposed is integrated with the cargo compartment partition wall portion adjacent to each other,
The main body frame is inserted into the evaporator unit side and is fitted into the mounting opening, so that the evaporator unit is disposed inside the cargo compartment, and the cargo compartment partition is disposed in the cargo compartment. The vehicle refrigeration apparatus, wherein the vehicle refrigeration apparatus is attached to the luggage compartment in contact with the periphery of the attachment opening. The body frame is
The vehicular refrigeration apparatus according to claim 1, wherein the cargo compartment exterior side and the cargo compartment interior side are arranged with a substantially equal weight balance around the cargo compartment partition. A charger that takes in power from a commercial power source, converts the AC output to DC and rectifies it, is further provided.
The vehicle refrigeration apparatus according to claim 1, wherein the battery is charged by the generator or the charger. The capacitor unit is covered by a casing provided on the main body frame,
The vehicle refrigeration apparatus according to any one of claims 1 to 3, wherein the casing is provided with an intake port for taking in the outside air from the front in the traveling direction. The capacitor unit is covered by a casing provided on the main body frame,
The vehicle refrigeration apparatus according to any one of claims 1 to 4, wherein the casing is provided with a heat radiating portion for releasing the heat upward.