JP4916464B2 - Refrigeration equipment for vehicles - Google Patents

Description

  The present invention relates to a refrigeration apparatus that is mounted on a refrigeration vehicle or the like and that cools a cargo compartment surrounded by a heat insulating panel, and more particularly to a structure of an evaporator (evaporator) portion of a refrigeration apparatus installed in the cargo compartment. .

  In the field of freight transportation by trucks and the like, the demand for transportation of fresh foods such as vegetables, fruits and seafood or frozen foods is increasing with the diversification of consumer life and the pursuit of convenience. For transporting fresh foods or frozen foods, a refrigerated or freezer car equipped with a sealed box-type cargo bed surrounded by heat insulation panels and maintaining the temperature inside the cargo compartment at a low temperature using a refrigeration system Used. Recently, food safety requirements have become stricter, and it has become necessary to strictly control the temperature in the cargo compartment during transportation so that it does not deviate from the appropriate range according to the cargo to be loaded. Vehicles are also increasing.

  The refrigeration system includes a compressor (compressor) that compresses a refrigerant such as chlorofluorocarbon in a gaseous state, a condenser (condenser) that cools and liquefies the high-temperature refrigerant after compression, and an expansion valve that squeezes and expands the liquefied refrigerant to lower the temperature. An evaporator (evaporator) for vaporizing the low-temperature refrigerant after expansion by absorbing heat is provided, and when the evaporator is vaporized, the surrounding heat is taken away and cooling is performed. In a refrigeration system mounted on a vehicle such as a refrigeration vehicle, a compressor is driven by a vehicle running engine or an engine dedicated to the refrigeration system, and the compressed refrigerant is sent to a condenser placed outside the cargo compartment, and a condenser fan is used. Cooling. The evaporator is installed above the cargo compartment surrounded by the heat insulating panel, and the cold air cooled by the evaporator is blown out from above the cargo compartment by the evaporator fan and circulates in the cargo compartment. The evaporator fan is assembled integrally with the evaporator, and a unit in which the evaporator and the evaporator fan are integrated and placed in the cargo compartment is hereinafter referred to as an “evaporator unit”.

In a refrigerator car or the like, an evaporator unit is further combined with a condenser unit, and the assembly is often attached to the upper part of the front panel of a box-type cargo bed located above the vehicle cab. In this case, a heat insulating material is disposed between the evaporator unit and the capacitor unit, the evaporator unit is installed in the luggage compartment, and the capacitor unit is placed outside the luggage compartment above the cab. In some freezer trucks, a partition is installed in the cargo compartment and divided into front and rear cargo compartments to maintain the front and rear cargo compartments at different temperatures. In addition, for example, there is a refrigeration vehicle in which an evaporator unit dedicated to the rear cargo compartment separated from the capacitor unit is attached to the rear panel of the rear cargo compartment.
A vehicular refrigeration apparatus in which an assembly of an evaporator unit and a condenser unit is mounted above a cab of a vehicle is described as an example in Japanese Patent Application Laid-Open No. 11-20460, and is described in FIG. The refrigeration equipment is shown.

  In FIG. 6A, the refrigeration vehicle includes a box-type cargo bed 101 and a cab 102, and each surface of the box-type cargo bed 101 is constituted by a heat insulating panel. Above the cab 102, an assembly 103 in which an evaporator unit and a capacitor unit are integrated is installed. As shown in FIG. 6B, the assembly 103 includes a housing 104 (including a heat insulating material). The capacitor unit CU is mounted on the outside of the cargo compartment of the evaporator housing), and the evaporator unit EU is mounted on the cargo compartment side. The refrigerant compressed by the compressor 105 placed in the engine room is introduced into the condenser 106 through a conduit (not shown), where it is cooled and liquefied by the condenser fan 107 and the traveling wind. The liquefied refrigerant is sent to an expansion valve (not shown) via a conduit, where it is throttled and expanded to a low temperature and introduced into the evaporator 108.

The evaporator 108 is a heat exchanger for cooling the cargo compartment, and an evaporator fan 109 is provided above the heat exchanger. Air in the cargo compartment is sucked by the evaporator fan 109 through the evaporator 108 and cooled. The blown air is blown into the cargo compartment. Such an evaporator unit is accommodated in an evaporator housing 104 that protrudes from the front panel of the box-type cargo bed 101 so that it does not interfere with cargo loaded in the cargo compartment. The evaporator housing 104 is housed in the box-type cargo bed 101. Attached to the opening 110 in the front panel.
Japanese Patent Laid-Open No. 11-20460

  When the evaporator unit on the cargo compartment side of the box-type cargo bed is installed overhanging the cargo compartment, the loadable cargo is reduced by that amount, and damage or the like occurs due to the collision of the cargo. Therefore, in an assembly of a vehicle refrigeration apparatus in which an evaporator unit and a condenser unit are integrally assembled, the evaporator unit is accommodated in an evaporator housing protruding forward of the box-type cargo bed, and the condenser unit is attached to the outside thereof. In the evaporator housing, a heat insulating material is used so as to prevent the inflow of heat from the outside, but the heat insulating material is different from the heat insulating panels constituting the front panel and the roof panel of the box-type cargo bed. In other words, when mounting such an assembly on a box-type carrier, a heat insulating material different from a heat insulating panel such as a front panel is required, and at the time of mounting, a cutting process or the like is applied to the front panel or the like to provide an opening for mounting. Must be formed.

An evaporator and a condenser are heat exchangers in which a large number of metal tubes having heat transfer fins are assembled, and are considerably heavy. The attaching work is a difficult work to be performed while holding a heavy object, and the workability is not good. Since the relative positions of the evaporator unit and the capacitor unit cannot be changed, for example, the position of the evaporator unit placed in the cargo compartment is restricted, and it may not be possible to install the evaporator unit at a position suitable for circulation of cold air.
An object of the present invention is to separate an evaporator unit installed in a cargo compartment of a refrigerator truck or the like from a capacitor unit, attach the evaporator unit using a heat insulating panel of a box-type cargo bed, and the evaporator unit projects into the cargo compartment In order to prevent this, the thickness is made as small as possible to solve the above-mentioned problems.

In view of the above problems, the evaporator unit of the present invention has two rectangular side frames that are long in the vertical direction fixed to a heat insulating panel of a box-type cargo bed and covers the cargo compartment side with a cover body. At the top of the side frame, an evaporator is attached to the lower part of the side, and a centrifugal evaporator fan that flows radially outward from the center is installed, and an air guide plate that sends cold air from the evaporator to the inlet of the evaporator fan is installed To do. That is, the present invention
“An evaporator unit of a refrigeration system that is mounted on a vehicle and cools the cargo compartment of a box-type cargo bed equipped with a heat insulating panel,
Two side frames having a rectangular shape that is long in the vertical direction are fixed in parallel to the heat insulation panel at an interval, and on the side opposite to the heat insulation panel of the two side frames, A plate-like cover body having an opening is fixed,
Between the lower parts of the two side frames, the evaporator of the refrigeration apparatus is installed with both ends fixed to the two side frames,
Between the upper portions of the two side frames, a vertical partition plate parallel to the heat insulating panel, an upper partition plate connecting the upper end of the vertical partition plate and the cover body, and the vertical partition plate A wind guide plate having a lower partition plate connecting the lower end of the box-type cargo bed and the heat insulating panel of the box-type carrier is fixed,
Between the vertical partition plate above the lower partition plate and the heat insulation panel, there is a centrifugal evaporator fan that allows fluid to flow radially outward from the center so that its rotational axis is orthogonal to the heat insulation panel. Installed, and the vertical partition plate is formed with air guide holes,
The cold air that has passed through the evaporator is introduced into the evaporator fan through the air guide holes, and then passes over the upper partition plate and is sent out from the opening of the cover body into the cargo compartment.
It is an evaporator unit characterized by this.

  The front panel of the box-type cargo bed is configured by a lower heat insulating panel and an upper heat insulating panel positioned on the vehicle front side of the lower heat insulating panel, and the two side frames. Is fixed to the upper heat insulating panel, and the dimension of the side frame including the plate-like cover body in the vehicle front-rear direction is set so as not to exceed the distance between the upper heat insulating panel and the lower heat insulating panel. It is preferable to do. In this case, as described in claim 3, a drain receiver of the evaporator can be installed at a joint portion between the lower heat insulation panel and the upper heat insulation panel.

  According to a fourth aspect of the present invention, the air guide hole of the vertical partition plate is formed at a position facing the evaporator fan, and further, a shroud for rectifying the cool air led to the evaporator fan is formed in the air guide hole. It is preferable to provide it.

  According to a fifth aspect of the present invention, it is preferable that a wind direction plate for guiding the cool air blown out from the evaporator fan to the cargo compartment side is installed above the two side frames.

  In the evaporator unit of the present invention, two rectangular side frames that are long in the vertical direction are fixed to the heat insulating panel of the box-type cargo bed, the evaporator is attached to the lower part, and the upper part is radially outward from the center. A centrifugal evaporator fan is provided to allow fluid to flow through. That is, the evaporator unit of the present invention is separated from the capacitor unit and is directly attached to the heat insulating panel of the box-type cargo bed, and the heat insulating material arranged between the evaporator unit and the capacitor unit is unnecessary. . When attaching the evaporator unit, there is no need for processing such as cutting a part of the front panel of the box-type carrier to form an opening, and at the same time, the weight separated from the capacitor unit is reduced. Therefore, the work for attaching the evaporator unit to the front panel becomes easy.

  The evaporator fan used in the evaporator unit of the present invention is a centrifugal fan that allows fluid to flow radially outward from the center, and is installed so that its rotational axis is orthogonal to the heat insulation panel. Therefore, the dimension protruding from the heat insulating panel of the evaporator fan is short (for example, when using an axial fan that flows fluid in parallel with the rotating shaft to flow cool air from the evaporator upward, at least the fan blades The length corresponding to the outer diameter of the side frame protrudes from the heat insulation panel), and accordingly, the protrusion amount (thickness) of the side frame from the heat insulation panel also decreases. Therefore, the overhang of the evaporator unit into the cargo compartment can be suppressed, and the reduction of the cargo compartment volume for loading cargo, which occurs with the installation of the evaporator unit, can be avoided as much as possible. A plate-like cover body is fixed on the side of the luggage compartment side of the side frame, and an air guide plate is fixed between the two side frames. Therefore, the cold air cooled by the evaporator smoothly flows to the centrifugal evaporator fan via this flow path.

In the invention of claim 2, the front panel of the box-type cargo bed, that is, the heat insulation panel on the front surface of the vehicle is divided into two upper and lower panels so that the upper heat insulation panel is positioned on the vehicle front side with respect to the lower heat insulation panel. The two side frames are fixed to the upper heat insulation panel, and the dimension of the side frame including the plate-like cover body in the vehicle front-rear direction exceeds the distance between the upper heat insulation panel and the lower heat insulation panel. It is set so that there is no. When this configuration is adopted, the evaporator unit does not protrude toward the cargo compartment side of the lower heat insulation panel, and the situation in which the cargo in the cargo compartment collides with the evaporator unit and causes damage is avoided.
Further, since the upper heat insulating panel is located on the vehicle front side with respect to the lower heat insulating panel, a step is formed at the connecting portion between them, and the drain of the evaporator is formed at the connecting portion as in the invention of claim 3. A receiver can be installed. The drain receiver of the evaporator is a bowl-shaped member for collecting condensed water that adheres to the evaporator and drops, and is provided below the evaporator installed at the lower part of the two side frames over the entire length of the evaporator. .

  According to a fourth aspect of the present invention, an air guide hole provided in the vertical partition plate of the air guide plate is formed at a position facing the evaporator fan, and further, a shroud for rectifying the cool air led to the evaporator fan is formed in the air guide hole. It is to be provided. In the air guide hole of the vertical partition plate, the flow of the cold air flowing parallel to the vertical partition plate is changed in a direction perpendicular to the vertical partition plate, so the air guide hole is formed at a position facing the evaporator fan, and a shroud is further provided. By providing, the flow of the cool air sucked into the evaporator fan becomes smooth, and the pressure loss is reduced.

  According to the fifth aspect of the present invention, a wind direction plate for guiding the cool air blown from the evaporator fan to the cargo compartment side is installed above the two side frames. The evaporator fan of the present invention is a centrifugal fan that allows fluid to flow radially outward, and cool air is blown upward from the evaporator fan, but the wind direction plate changes the wind direction in the direction of the cargo compartment on the blowing side. The air direction is smoothly changed, and the cool air discharged from the evaporator fan passes through the opening formed in the upper part of the plate-like cover body and is smoothly blown out to the cargo compartment side. Become.

  The evaporator unit of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an exploded view of an embodiment of an evaporator unit according to the present invention mounted on a box-type cargo bed. For ease of understanding, FIG. The side panel is removed. FIG. 2 is a perspective view showing a main part of the evaporator unit, and FIG. 3 is a side view of the evaporator unit attached to the heat insulating panel. Further, FIG. 4 shows a side frame of the evaporator unit, and FIG.

  As shown in FIG. 1, a box-type carrier 1 mounted on a vehicle such as a truck basically has a front and rear panels, two side panels, a roof panel, and a floor surface placed in the front-rear direction of the vehicle. It is composed of a hexahedron composed of panels. In a freezer car or the like, heat insulating panels are used for these panels so as to block heat transfer with the outside, and the cargo compartment of the box-type cargo bed 1 such as the freezer car is surrounded by the heat insulating panel. The rear panel is usually equipped with double doors for loading and unloading cargo.

  In the box-type cargo bed 1 of the embodiment shown in FIG. 1, the front panel includes an upper heat insulation panel 11 and a lower heat insulation panel 12. The upper heat insulating panel 11 is disposed on the vehicle front side with respect to the lower heat insulating panel 12, and an inclined heat insulating material 13 is placed at a joint portion between the upper heat insulating panel 11 and the lower heat insulating panel 12. The evaporator unit EU of the present invention is mounted on the luggage compartment side of the upper heat insulation panel 12, and the capacitor unit CU represented by a two-dotted line is positioned above the vehicle cab on the outside of the upper heat insulation panel 11. It is attached to do. As described above, the attachment position of the evaporator unit EU of the present invention is substantially the same position as that of the conventional refrigeration vehicle of FIG. 6, but the evaporator unit EU and the capacitor unit CU are separated. That is, the evaporator unit EU of the present invention is attached as a single evaporator unit at a position facing the capacitor unit CU across the upper heat insulating panel 11 of the front panel.

The evaporator unit EU includes two side frames 2 arranged in parallel with a gap therebetween, and the side frames 2 are fixed to the luggage compartment side of the upper heat insulating panel 11 with screws or rivets. As shown in FIG. 4, the side frame 2 is a vertically long rectangular member having a space portion 21 in the lower portion, and the lower space portion 21 is a refrigeration apparatus that evaporates refrigerant and cools the surroundings. Both ends of the evaporator E are inserted and fixed. The evaporator E is a heat exchanger in which a large number of metal tubes having heat transfer fins are gathered. The evaporator E is provided with baffle plates at both ends, and can be used to hold the evaporator E in the lower space 21. it can.
The evaporator E is connected to the capacitor unit CU via a pipe line (not shown) that penetrates the upper heat insulating panel 11. Although the expansion valve of the refrigeration apparatus is interposed in the middle of the pipe line, it can be attached to the outside of the side frame 2. The heat insulating material 13 inclined below the evaporator E is provided with a drain receiver 14 extending over the entire length in the width direction of the evaporator E. The condensed water dripped from the evaporator E is collected and discharged to the outside. The drain receiver 14 may be provided with a bypass pipe through which a high-temperature refrigerant passes when the evaporator is defrosted to prevent the condensed water from freezing.

  Between the two side frames 2, a plate-like cover body 3 is fixedly provided on the side of the side frame 2 on the luggage compartment side, that is, on the opposite side of the upper heat insulating panel 11. The cargo compartment side is covered with a plate-like cover body 3. The plate-like cover body 3 covers the cargo compartment side of the evaporator E and a part of the upper part of the side frame 2, and has an opening 31 that is cut out by a predetermined length from the upper end of the side frame 2. is doing. The dimension (thickness) of the side frame 2 including the cover body 3 in the vehicle front-rear direction is such that the evaporator unit EU does not protrude from the lower heat insulation panel 12 toward the luggage compartment side. The dimension is set so as not to exceed the distance from the heat insulating panel 12 (see FIG. 3).

  Further, as shown in FIG. 2 and FIG. 3, the vertical partition plate 41, the upper partition plate 42, and the lower partition plate 43 are provided between the two side frames 2 above the evaporator E. A Z-shaped air guide plate 4 is fixed, and two centrifugal evaporator fans 5 each having a drive motor 51 are provided between the vertical partition plate 41 of the air guide plate 4 and the upper heat insulating panel 11. The rotating shaft is installed so as to be orthogonal to the upper heat insulating panel 11. The evaporator fan 5 is a centrifugal fan that has a large number of blades extending in the radial direction and allows fluid to flow radially outward from the center. The two evaporator fans 5 are fixed in parallel to the evaporator fan base 52. The evaporator fan base 52 is fixed to the fan base fixing bracket 22 on the upper side of the side frame 2.

  As shown in FIG. 5, the air guide plate 4 for guiding the cool air from the evaporator E to the evaporator fan 5 is placed in parallel with the upper heat insulating panel 11, and the vertical partition plate 41 in which the air guide holes 44 are formed, An upper partition plate 42 and a lower partition plate 43 that extend vertically from the upper and lower ends of the partition plate 41 are provided. In the air guide plate 4 shown in FIG. 5, the vertical partition plate 41 and the upper partition plate 42 are integrated, and a separate lower partition plate 43 is fixed by screws or the like, but one plate material is folded. The air guide plate 4 may be manufactured. The vertical partition plate 41 is fixed to the air guide plate fixing bracket 23 at the top of the side frame 2, the upper partition plate 42 is at the lower edge of the opening 31 of the cover body 3, and the lower partition plate 43 is the upper heat insulating member. The panel 11 is fixed with screws or the like (see FIG. 1 and the like).

  The air guide hole 44 of the vertical partition plate 41 is formed at a position facing the suction port of the evaporator fan 5 and includes a shroud 45 having a bell mouth cross section that guides the flow of cool air sucked into the evaporator fan 5. . The shroud 45 in FIGS. 1 and 2 is fixed separately from the vertical partition plate 41, but the shroud 45 can be formed together with the air guide holes 44 by pressing the vertical partition plate 41. Further, a wind direction plate 24 is fixed to the upper end portion of the side frame 2 in order to guide the cool air discharged upward from the evaporator fan 5 in the direction of the cargo compartment, but as shown in FIG. Can be fixed to the upper heat insulating panel 11.

  As described above, the evaporator unit EU of the present invention is separated from the capacitor unit and is directly attached to the upper heat insulating panel 11 of the box-type cargo bed. Therefore, the heat insulating material conventionally arranged between the evaporator unit and the capacitor unit is provided. Is unnecessary. Further, the attaching operation of the evaporator unit EU is an easy operation because the unit having a small weight separated from the capacitor unit is attached to the planar upper heat insulating panel 11. In some cases, first, the two side frames 2 are fixed to the upper heat insulating panel 11, and then the evaporator fan pedestal 52 and the air guide plate 4 to which the evaporator fan 5 is attached are placed on the upper side of the side frame 2. It is also possible to adopt a method of sequentially attaching each component such as fixing the cover body 3 after fixing the frame to the lower part of the side frame 2.

  And since the evaporator fan 5 used for the evaporator unit EU of this invention is a centrifugal fan installed so that a rotating shaft might be orthogonal to a front panel, the dimension of a vehicle front-back direction becomes a short thing. Therefore, the dimension of the side frame 2 in the vehicle front-rear direction is also reduced, and the overhang of the evaporator unit EU into the cargo compartment can be suppressed. The cover body 3 provided on the cargo compartment side of the evaporator unit EU also serves to prevent cargo loaded in the cargo compartment from colliding with the evaporator unit EU.

Next, the flow of cold air and the like of the evaporator unit EU of the present invention configured as described above will be described.
In the cargo compartment of the box-type carrier 1 shown in FIG. 1, cargo that needs to be transported at a low temperature, such as frozen food or fresh food, is loaded. When the evaporator fan 5 is driven, the air in the cargo compartment flows from the opening 32 (FIG. 1) below the cover body 3 to the evaporator E, as indicated by the dashed arrows in FIG. When air passes through the evaporator E from below to above, heat exchange with the low-temperature refrigerant in the evaporator is performed, and the air becomes low-temperature cold. The cold air is guided to the air guide hole 44 via the flow path between the vertical partition plate 41 of the air guide plate 4 and the cover body 3 and is sucked into the suction port of the evaporator fan 5 while being rectified by the shroud 45.

  The evaporator fan 5 is a centrifugal fan, and the sucked cold air is pumped radially outward and discharged into a space above the opened evaporator fan 5. The discharged cool air is guided toward the cargo compartment by the wind direction plate 24, passes over the upper partition plate 42, and is blown out from the opening 31 (FIG. 1) of the cover body 3 into the cargo compartment. The cool air blown out from above the cargo compartment cools the cargo in the cargo compartment and then circulates again to the evaporator unit EU.

As described in detail above, the evaporator unit of the present invention applied to a freezer car or the like fixes two rectangular side frames that are long in the vertical direction to a heat insulating panel of a box-type cargo bed, In the middle, an evaporator is installed in the lower part, and a centrifugal evaporator fan and an air guide plate that flow radially outward from the center are installed in the upper part. The heat insulation panel of the box-type cargo bed is used to install the evaporator unit. It can be attached and has a small thickness so as to prevent the evaporator unit from overhanging into the cargo compartment.
In the above-described embodiment, the case where the evaporator unit of the present invention is attached to the front panel having a step of the box-type loading platform has been described. Needless to say, the evaporator unit of the present invention can be applied as an evaporator unit dedicated to the rear cargo compartment installed on the rear panel of the rear cargo compartment of the refrigerator car divided into the front and rear cargo compartments. In addition, it is apparent that various modifications can be made to the embodiment, such as appropriately increasing or decreasing the number of evaporator fans juxtaposed and changing the mounting of the wind guide plate with the bracket and screw to the mounting with welding.

It is a disassembled perspective view which shows the Example of the evaporator unit of this invention. It is a perspective view which shows the principal part of the evaporator unit of this invention. It is a side view of the evaporator unit of FIG. It is a figure which shows the side frame of the evaporator unit of this invention. It is a figure which shows the baffle plate of the evaporator unit of this invention. It is a figure which shows the evaporator unit etc. in the conventional freezing vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box-type loading platform 11 Upper heat insulation panel 12 Lower heat insulation panel 2 Side frame 3 Cover body 4 Air guide plate 41 Vertical partition plate 44 Air guide hole 45 Shroud 5 Evaporator fan E Evaporator unit CU Evaporator unit CU Condenser unit

Claims (5)

An evaporator unit of a refrigeration apparatus mounted on a vehicle and cooling a cargo compartment of a box-type cargo bed equipped with a heat insulating panel,
Two side frames having a rectangular shape that is long in the vertical direction are fixed in parallel to the heat insulation panel at an interval, and on the side opposite to the heat insulation panel of the two side frames, A plate-like cover body having an opening is fixed,
Between the lower parts of the two side frames, the evaporator of the refrigeration apparatus is installed with both ends fixed to the two side frames,
Between the upper portions of the two side frames, a vertical partition plate parallel to the heat insulating panel, an upper partition plate connecting the upper end of the vertical partition plate and the cover body, and the vertical partition plate A wind guide plate having a lower partition plate connecting the lower end of the box-type cargo bed and the heat insulating panel of the box-type carrier is fixed,
Between the vertical partition plate above the lower partition plate and the heat insulation panel, there is a centrifugal evaporator fan that allows fluid to flow radially outward from the center so that its rotational axis is orthogonal to the heat insulation panel. Installed, and the vertical partition plate is formed with air guide holes,
The cold air that has passed through the evaporator is introduced into the evaporator fan through the air guide holes, and then passes over the upper partition plate and is sent out from the opening of the cover body into the cargo compartment. Evaporator unit. The box-type cargo bed includes a front panel having a lower heat insulation panel and an upper heat insulation panel located on the vehicle front side of the lower heat insulation panel,
The two side frames are fixed to the upper heat insulating panel, and the dimension of the side frame including the plate-like cover body in the vehicle front-rear direction is between the upper heat insulating panel and the lower heat insulating panel. The evaporator unit according to claim 1, wherein the evaporator unit is set so as not to exceed the distance. The evaporator unit according to claim 2, wherein a drain receiver of the evaporator is installed at a joint portion between the lower heat insulation panel and the upper heat insulation panel. The evaporator unit according to any one of claims 1 to 3, wherein an air guide hole of the vertical partition plate is formed at a position facing the evaporator fan, and includes a shroud that rectifies cool air led to the evaporator fan. . The evaporator unit according to any one of claims 1 to 4, wherein a wind direction plate that guides cool air blown from the evaporator fan to a cargo compartment side is installed above the two side frames.

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