JP2019069642A - vehicle - Google Patents

Abstract

To inhibit deterioration of aerodynamic performance of a vehicle having a box shaped load-carrying platform that is to be kept cold.SOLUTION: A vehicle 1 includes: a box shaped load-carrying platform 30 provided behind a cab 20; and a condenser 44 which is provided in a space between the cab 20 and the box shaped load-carrying platform 30 as a panel along a vertical direction and conducts heat exchange between a refrigerant for keeping an interior of the box shaped load-carrying platform 30 cold with air flowing along the panel. The condenser 44 has a refrigerant passage 44d which is formed along a main surface in the panel and in which the refrigerant flows.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle provided with a box-type carrier at the rear of a cab.

  2. Description of the Related Art In recent years, as vehicles, refrigerated and frozen vehicles (trucks) for transporting food products and the like in a refrigerated or frozen state have become widespread. In such a vehicle, behind the cab, a box-type loading platform having a refrigerator compartment and a freezer compartment inside is provided, and the refrigerator compartment and the like are cooled by the refrigerant. The refrigerant is cooled by heat exchange with external air by a condenser that is a heat exchanger.

Unexamined-Japanese-Patent No. 11-91433

  By the way, the above-mentioned heat exchanger (for example, a tube and fin type condenser) is usually disposed to project forward above the front surface of the box-type carrier. When the heat exchanger is arranged as described above, the air resistance from the front of the vehicle (traveling wind) hits the heat exchanger during traveling of the vehicle, and therefore the aerodynamic performance of the vehicle is reduced. I will. Further, the heat exchanger described above tends to deteriorate aerodynamic performance because it draws in the traveling wind.

  Then, this invention is made in view of these points, and an object of the present invention is to control a fall of aerodynamic performance of vehicles which have a box type cargo platform which is cooled.

In one aspect of the present invention, a box-type carrier provided at the rear of a cab and a space along the vertical direction are provided in a space between the cab and the box-type carrier, and the inside of the box-type carrier is The heat exchanger exchanges heat between the refrigerant for keeping cold and the air flowing along the panel, and the heat exchanger is formed along the main surface inside the panel, and the refrigerant passage through which the refrigerant flows To provide a vehicle.
According to the vehicle of the above configuration, the heat exchanger is provided as a panel in the space between the cab and the box-type carrier, so that the air (running wind) flowing from the front of the vehicle hits the heat exchanger Can be suppressed. Thereby, since the air resistance resulting from the mounting position of a heat exchanger can be suppressed compared with the conventional tube fin type, the fall of the aerodynamic performance of a vehicle can be suppressed.

  Further, the heat exchanger may be provided along the front wall surface of the box-type carrier, and may be supported in a separated state on the front wall surface.

  The refrigerant passage is formed inside a convex portion provided in a convex shape along the vertical direction or the vehicle width direction of the vehicle with respect to the main surface, and the convex portion is the heat exchange It may be provided on the main surface on both sides or one side of the vessel.

  Further, the vehicle may further include a plate-like protective plate provided between the heat exchanger and the cab and facing the main surface.

  Furthermore, the vehicle may further include a fan provided at an end of the heat exchanger and flowing air toward the heat exchanger, and the fan may operate when the vehicle is stopped.

  ADVANTAGE OF THE INVENTION According to this invention, it is effective in the ability to suppress the fall of the aerodynamic performance of the vehicle which has a box-type loading platform kept cold.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram for demonstrating the structure of the vehicle 1 which concerns on one Embodiment of this invention. FIG. 2 is a schematic view for explaining the configuration of a cold storage apparatus 40 mounted on a vehicle 1; It is a schematic diagram for demonstrating the attachment structure to the box-type loading platform 30 of the capacitor | condenser 44. FIG. FIG. 6 is a schematic view for illustrating the configuration of a capacitor 44.

<Configuration of vehicle>
A schematic configuration of a vehicle according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a schematic view for explaining the configuration of a vehicle 1 according to one embodiment. The vehicle 1 is a truck here, and is a refrigerated / refrigerated vehicle that transports food products and the like in a refrigerated state or a frozen state. As shown in FIG. 1, the vehicle 1 includes an engine 10, a cab 20, an air deflector 22, a box-type loading platform 30, and a cooler 40.

  The engine 10 generates power to drive the vehicle 1. The engine 10 is attached to the front of a vehicle body frame extending in the front-rear direction of the vehicle 1.

  The cab 20 is located above the engine 10. Inside the cab 20, there is formed a cabin in which an occupant such as a driver can sit. The cab 20 is attached to be able to tilt with respect to the vehicle body frame. With the cab 20 tilted, maintenance of the engine 10 and the like is performed.

  The air deflector 22 is provided above the cab 20. The air deflector 22 has a function of adjusting the flow of air from the front of the vehicle 1 to reduce the air resistance. The upper surface of the air deflector 22 is curved to reduce air resistance.

  The box-shaped loading platform 30 is a box-shaped loading platform provided at the rear of the cab 20. At least one of a refrigerator compartment and a freezer compartment is provided in the inside of the box type loading platform 30, and the cold storage device 40 keeps the cold storage state.

  The cold storage device 40 is a device for cooling the inside of the box-type loading platform 30. The cold storage device 40 cools the refrigerator compartment and the freezer compartment of the box-shaped loading platform 30 using a refrigerant (specifically, refrigerant gas).

  FIG. 2 is a schematic view for explaining the configuration of the cold storage apparatus 40 mounted on the vehicle 1. The cold storage device 40, as shown in FIG. 2, has a compressor 42, a condenser 44, an evaporator 46, and pipelines 48a, 48b, 48c.

  The compressor 42 is a compressor that compresses a refrigerant. The compressor 42 is provided below the cab 20 and is connected to a drive shaft of the engine 10 by a belt or the like. Thereby, the compressor 42 is rotationally driven by the engine 10 and compresses the refrigerant.

  The condenser 44 is a condenser that cools and condenses the refrigerant compressed by the compressor 42. The condenser 44 is provided outside the box-type loading platform 30 as shown in FIG. 1 and exchanges heat between air (for example, traveling wind) and the refrigerant to cool the refrigerant. The condenser 44 is a panel heat exchanger, the details of which will be described later.

  The evaporator 46 is an evaporator that evaporates the refrigerant liquid condensed by the condenser 44. The evaporator 46 is provided inside the box-type carrier 30 as shown in FIG. The evaporator 46 is cooled by the heat of vaporization when the refrigerant liquid is evaporated. Then, for example, a wind passing through the evaporator 46 by a fan (not shown) becomes a cold wind and is sent to the inside of the box-type loading platform 30 (refrigerating room or freezing room).

  The conduits 48 a, 48 b, 48 c form a circulation path for circulating the refrigerant between the compressor 42, the condenser 44 and the evaporator 46. Specifically, the pipe line 48 a is a pipe for sending the refrigerant compressed by the compressor 42 to the condenser 44. The pipe line 48 b is a pipe for feeding the refrigerant liquid condensed by the condenser 44 to the evaporator 46. The pipe line 48 c is a pipe for sending the refrigerant evaporated by the evaporator 46 to the compressor 42. The pipe line 48b is provided with an expansion valve (not shown) for promoting the vaporization of the refrigerant liquid.

<Detailed Configuration of Capacitor and Peripheral Portion>
The detailed configuration of the capacitor 44 and the peripheral portion will be described with reference to FIGS. 3 and 4.

  FIG. 3 is a schematic view for explaining the attachment configuration of the capacitor 44 to the box-type carrier 30. FIG. 4 is a schematic view for illustrating the configuration of the capacitor 44. As shown in FIG. 4 (a) shows a plan view of the capacitor 44, and FIG. 4 (b) shows an AA cross-sectional view of FIG. 4 (a).

  The capacitor 44 is provided as a panel along the vertical direction in the space between the cab 20 and the box type cargo platform 30 (specifically, the front wall 31) (see FIG. 1). The condenser 44 exchanges heat between the refrigerant for cooling the inside of the box-type loading platform 30 and the air flowing along the panel-type condenser 44. Air vertically upward in the space between the cab 20 and the front wall 31 flows along the condenser 44 (arrows in FIG. 3 indicate the flow of air). In addition, the capacitor | condenser 44 may be provided over substantially the whole area | region of the front wall 31 of the box-type loading platform 30, and may be provided in a part of front wall 31. FIG. For example, the condenser 44 may be provided at a position corresponding to the freezer compartment inside the box-type loading platform 30.

  The capacitor 44 is provided along the front wall surface 31a of the box-type loading platform 30, and is supported by the front wall surface 31a in a separated state. For example, as shown in FIG. 3, the capacitor 44 is supported by a support member 50 fixed to the front wall 31 of the box-type loading platform 30. As a result, as shown by the arrows in FIG. 3, air flows on both sides of the condenser 44, and heat exchange between the air and the refrigerant in the condenser 44 is efficiently performed.

  The panel type capacitor 44 is, for example, a roll bond panel. Specifically, the capacitor 44 is a panel manufactured by rolling and pressing two aluminum sheets. A refrigerant passage through which the refrigerant flows is formed between the two aluminum sheets. The refrigerant passage is formed, for example, by inflating between two aluminum sheets with high pressure air. As described above, the convex portion is formed on at least one of the main surfaces on both sides of the capacitor 44 by expanding with the high pressure air. Here, as shown in FIG. 4 (b), it is assumed that a convex portion 44 c in a convex shape is formed on the main surface 44 a on one side of the capacitor 44.

  As shown in FIG. 4A, a plurality of convex portions 44c are formed on the main surface 44a. The plurality of convex portions 44c are each formed in a convex shape along the vertical direction. Further, the plurality of convex portions 44c are provided at predetermined intervals in the vehicle width direction. By providing such a convex portion 44c, the surface area of the air in contact with the condenser 44 is increased, and the cooling of the refrigerant by the air is promoted. Moreover, when the convex part 44c is formed in the perpendicular direction, since it is parallel to the flow direction of air (refer FIG. 3), the fall of the aerodynamic performance at the time of driving | running | working of the vehicle 1 can be suppressed.

  As shown in FIG. 4B, refrigerant passages 44d through which the refrigerant flows are formed inside the plurality of convex portions 44c. That is, the refrigerant passage 44 d is formed inside the condenser 44 along the main surface 44 a. Moreover, since the convex part 44c is formed along the perpendicular direction, 44 d of refrigerant paths are along the perpendicular direction. The refrigerant passage 44d is connected to the conduits 48a and 48b (FIG. 2).

  The protective plate 52 is a plate-like member provided between the capacitor 44 and the cab 20 and facing the main surface 44 a as shown in FIG. 3. The protective plate 52 has a function of preventing the impact on the main surface 44 a of the capacitor 44. As a result, damage to the capacitor 44 by flying objects can be suppressed. The flying object is a stone or the like flying from another vehicle (preceding vehicle, oncoming vehicle, etc.) while traveling. The protective plate 52 may also be provided on the side surface of the capacitor 44.

  The fan 54 is provided to face the end of the capacitor 44 as shown in FIG. At this time, the fan 54 may cause air to flow on both sides of the condenser 44. The fan 54 is, for example, a centrifugal fan such as a sirocco fan or a turbo fan, and is attached to the lower portion of the front wall 31 of the box-type loading platform 30. By providing the fan 54 described above, the flow of air along the main surface of the condenser 44 can be promoted.

  In addition, the fan 54 operates when the vehicle 1 stops or travels at low speed. Thus, air flows to the condenser 44 even when the vehicle 1 is stopped or at low speed traveling, so that heat exchange between the air and the refrigerant by the condenser 44 can be effectively performed. Here, the fan 54 is opposed to the lower end of the condenser 44 in the vertical direction, but the invention is not limited thereto. The fan 54 is provided to face the upper end of the condenser 44 in the vertical direction It is also good.

  In the above, although the convex part 44c is formed in the main surface 44a, it is not limited to this. For example, the convex portion 44c may be formed on the main surface 44b instead of the main surface 44a. Moreover, the convex part 44c may be formed in both the main surface 44a and the main surface 44b.

  Moreover, although the convex part 44c presupposed that it forms along the perpendicular direction in the above, it is not limited to this. For example, the convex portion 44 c may be formed along the vehicle width direction of the vehicle 1. In this case, turbulent air flow is likely to occur around the convex portion 44c along the vehicle width direction, so cooling of the refrigerant by the air is promoted.

<Effect of this embodiment>
The condenser 44 of the vehicle 1 according to the present embodiment described above is provided as a panel-type heat exchanger in a space between the cab 20 and the box-type loading platform 30 having a refrigerator compartment and a freezer compartment inside. Then, the condenser 44 exchanges heat between the air flowing along the panel and the refrigerant flowing through the refrigerant passage 44 d formed therein.
With the above-described configuration, capacitor 44 is provided as a panel in the space between cab 20 and box-type loading platform 30 to suppress air (running wind) flowing from the front of vehicle 1 from hitting capacitor 44. it can. Thereby, since the air resistance resulting from the mounting position of a capacitor | condenser can be suppressed compared with the conventional tube fin type | mold capacitor | condenser, the fall of the aerodynamic performance of the vehicle 1 can be suppressed.

  As mentioned above, although the present invention was explained using an embodiment, the technical scope of the present invention is not limited to the range given in the above-mentioned embodiment, and various modification and change are possible within the range of the gist. is there. For example, a specific embodiment of device distribution and integration is not limited to the above embodiment, and all or a part thereof may be functionally or physically distributed and integrated in any unit. Can. In addition, new embodiments produced by any combination of a plurality of embodiments are also included in the embodiments of the present invention. The effects of the new embodiment generated by the combination combine the effects of the original embodiment.

DESCRIPTION OF SYMBOLS 1 vehicle 20 cab 30 box-shaped loading platform 31 front wall 31a front wall surface 44 capacitor 44a, 44b main surface 44c convex part 44d refrigerant passage 52 protective plate 54 fan

Claims (5)

With a box-type carrier provided at the rear of the cab,
A heat exchanger provided as a panel along a vertical direction in a space between the cab and the box-type carrier, which exchanges heat between a refrigerant for keeping the interior of the box-type carrier cold and air flowing along the panel When,
Equipped with
The heat exchanger has a refrigerant passage which is formed along the main surface inside the panel and through which the refrigerant flows.
vehicle. The heat exchanger is provided along the front wall surface of the box-shaped loading platform, and is supported in a separated state on the front wall surface.
The vehicle according to claim 1. The refrigerant passage is formed inside a convex portion provided in a convex shape along the vertical direction or the vehicle width direction of the vehicle with respect to the main surface,
The convex portion is provided on the main surface on both sides or one side of the heat exchanger,
The vehicle according to claim 1 or 2. It further comprises a plate-like protective plate provided between the heat exchanger and the cab and facing the main surface.
The vehicle according to any one of claims 1 to 3. The heat exchanger further includes a fan provided at an end of the heat exchanger and flowing air toward the heat exchanger.
The fan operates when the vehicle stops.
The vehicle according to any one of claims 1 to 4.

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