JP2003240406A - Refrigeration unit for container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable low cost operation of a refrigeration unit by reducing energy used by an evaporator fan. <P>SOLUTION: The refrigeration unit for a container comprises a partition wall 102 for demarcating a storing space for cargoes, inside the container, an inlet opening 111 formed between the partition wall 102 and a ceiling of the container and communicating with the storing space, the evaporator fan 8 provided between the partition wall 102 and a wall portion 100a of the container for sucking air from the accommodation space through the inlet opening 111, and the evaporator for cooling the air supplied by the evaporator fan 8. In the refrigeration unit, a first curved portion 15 convexly projecting toward the evaporator fan 8 and a second curved portion 16 convexly projecting toward the accommodation space are formed on an upper end of the partition wall 102. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating device provided in a container for shipping, for example, and more particularly to a technique for reducing energy consumption of the refrigerating device to enable low cost operation.

[0002]

2. Description of the Related Art An example of the structure of a container having a refrigerating device is shown in FIGS. In the figure, reference numeral 100 is a container, 101 is a refrigerating device incorporated in one wall portion 100a in the longitudinal direction of the container 100, and 102 is a part of the refrigerating device 101 and constitutes the refrigerating device 101 and a storage space S in the refrigerator. A partition wall, 103 is an internal floor on which the cargo F is placed.

The refrigeration system 101 includes a compressor 105 for compressing a refrigerant, an evaporator 106 for exchanging heat between the compressed refrigerant and the air inside the container (inside the container), and a refrigerant for exchanging heat between the air inside the container and the outside air. A condenser 107 to be replaced, an evaporator fan 108 forcibly supplying the air in the refrigerator to the evaporator 106, and a condenser 1
Condenser fan 109 that forcibly supplies outside air to 07
It has and.

Devices such as the evaporator 106 and the evaporator fan 108 that should be placed inside the refrigerator are arranged above the wall 100a, and devices such as the condenser 107 and the condenser fan 109 that are to be placed outside the refrigerator are arranged below the wall 100a. Each device is fixed to a frame 110 which is a part of the wall 100a. The frame 110 has a sufficient strength to support each device while accommodating each device in a smaller space.
The shape in which the part to which 07 and the condenser fan 109 are fixed is projected into the interior is provided.

The evaporator fan 108 employs an axial flow fan that allows air to flow in in the axial direction, and the blades forming the fan have a camber shape whose blade surface is arcuate when viewed from the axial direction. Has become a wing.

The flow of the air flowing through the refrigerating apparatus 101 configured as described above will be described. The air in the refrigerator that contributed to the cooling of the cargo F is blown by the evaporator fan 108 to the ceiling surface of the container 100. Partition wall 10
2 is sucked into the apparatus through a suction port 111 provided between the upper edge and the upper edge, and is cooled by exchanging heat with the refrigerant in the process of passing through the evaporator 106. The cooled air flows through the two gaps between the inner wall surfaces on both sides of the container 100 and the protrusions 110a so as to avoid the protrusions 110a of the frame 110 (see FIG. 4), the partition wall 102 and the protrusions. 1
The flow was divided into three parts (see FIG. 5) through the gap with the back surface of the container 10a and merged again at the bottom of the container 100, and was provided between the bottom surface of the double-structured container 100 and the inner floor 103. It flows into the air flow path 112. Air flow path 11
The air flowing into the container 2 spreads in the longitudinal direction of the container 100, and is blown into the accommodation space S from the outlets 113 provided at various places on the inner floor 103.

[0007]

In the refrigerating apparatus 101 having the above-described structure, the main flow of the air in the refrigerator goes to the refrigerating apparatus 101 along the ceiling surface of the container 100 and almost passes through the suction port 111. Since the direction is changed by 90 °, a difference in velocity (turbulence) occurs in the air flowing toward the evaporator fan 108, and the air does not have a uniform flow, so that the evaporator fan 108 cannot fully function. Therefore, if an attempt is made to send a sufficient amount of air to the evaporator 106, the evaporator fan 108 must be made to do extra work, and the energy consumption of the refrigeration system increases.

[0008] Further, when the three divided air flows merge again at the bottom of the container 100 in order to avoid the convex portion 110a of the frame 110, the flow path suddenly expands, so that the pressure loss increases. Therefore, a sufficient amount of air should be supplied to container 1
In order to spread all the way to 00, the evaporator fan 108 must also do extra work,
This also increases the energy consumption of the refrigeration system.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the energy consumed by an evaporator fan to enable low-cost operation of a refrigeration system.

[0010]

As a means for solving the above problems, a container refrigerating apparatus having the following structure is adopted. That is, the container refrigerating apparatus according to claim 1 of the present invention is a container refrigerating apparatus for cooling air inside the container, wherein a partition wall defining a storage space for cargo is provided inside the container, A suction port communicating with the storage space is provided between the partition wall and the ceiling surface of the container, and a fan sucking air from the storage space through the suction port between the partition wall and the wall of the container. And a condenser for cooling the air supplied by the fan. When the partition wall is viewed in cross section from a side orthogonal to the thickness direction of the partition wall, the fan is provided at the upper end of the partition wall. The first curved surface portion is formed so as to project in a convex shape toward.

A refrigerating apparatus for a container according to claim 2 is a refrigerating apparatus for a container that cools air inside the container, wherein a partition wall that defines a storage space for cargo is provided inside the container, and the partition wall. And a ceiling surface of the container are provided with a suction port communicating with the storage space, and a fan sucking air from the storage space through the suction port between the partition wall and the wall portion of the container, and A condenser for cooling the air supplied by the fan is provided, and when the partition wall is viewed in cross section from a side orthogonal to the thickness direction of the partition wall, the partition wall has an upper end and the storage space It is characterized in that a second curved surface portion protruding toward the convex is formed.

A refrigerating apparatus for a container according to a third aspect is a refrigerating apparatus for a container that cools air inside the container, wherein a partition wall that defines a storage space for cargo is provided inside the container. And a ceiling surface of the container are provided with a suction port communicating with the storage space, and a fan sucking air from the storage space through the suction port between the partition wall and the wall portion of the container, and A condenser for cooling the air supplied by the fan is provided, and when the partition wall is viewed in cross section from a side orthogonal to the thickness direction of the partition wall, the partition wall faces the fan at the upper end thereof. A first curved surface portion protruding in a convex shape and a second curved surface portion protruding in a convex shape toward the accommodation space are formed.

A refrigerating apparatus for containers according to a fourth aspect is the refrigerating apparatus for containers according to the third aspect, characterized in that the curvature of the first curved surface portion is larger than the curvature of the second curved surface portion. To do.

According to the present invention, the partition wall is provided with the first curved surface portion projecting in a convex shape toward the fan so that when the air is supplied to the condenser through the suction port by the function of the fan, the partition wall is separated. Air drawn around the upper end of the wall is rectified so that separation is less likely to occur, and the speed difference (turbulence) of the air toward the fan is evened out.

By forming a second curved surface portion projecting in a convex shape toward the accommodation space at the upper end of the partition wall, the speed difference of the air directed to the fan can be equalized. This configuration takes into consideration the flow of the air that has risen along the side surface of the partition wall in particular, and since the air that circulates around the upper end of the partition wall and makes a direction change close to the U-turn is rectified, this configuration also The speed difference of the air toward the fan will be equalized.

Further, by making the curvature of the first curved surface portion larger than the curvature of the second curved surface portion, the flow along the ceiling surface of the container, which is the mainstream, is preferentially guided to the fan,
The flow that rises along the partition wall, which is a sidestream, is drawn into the main flow and merges, and further separation does not occur easily behind the first curved surface portion.

A refrigerating apparatus for containers according to claim 5 is a refrigerating apparatus for cooling the air inside the container, and is provided with a fan for sucking the air and a condenser for cooling the air supplied by the fan. In addition, a rectifying portion that directs air toward the center of the fan toward the peripheral edge is provided in front of the fan in the flow direction of the air.

A refrigerating apparatus for a container according to a sixth aspect is the refrigerating apparatus for a container according to the fifth aspect, in which the rectifying portion has a substantially hemispherical shape, and the spherical portions are arranged to face each other in the inflow direction of the air. It is characterized by being.

According to the present invention, a rectifying portion for directing air toward the center of the fan toward the peripheral edge is provided in front of the fan to reduce retention of air and increase pressure loss of air before being sucked into the fan. Is prevented. In addition,
It is desirable that the rectifying portion has a substantially hemispherical shape, and that its flow surface portion is arranged so as to face the air inflow direction.

The container refrigerating apparatus according to claim 7 is a container refrigerating apparatus for cooling air inside the container, wherein a partition wall defining a storage space for cargo is provided inside the container. And a ceiling surface of the container are provided with a suction port communicating with the storage space, and a fan sucking air from the storage space through the suction port between the partition wall and the wall portion of the container, and A condenser for cooling the air supplied by the fan is provided, and the fan is arranged closer to the wall portion of the container than the partition wall.

In the present invention, by disposing the fan closer to the wall portion of the container than the partition wall, the radius of gyration of the air that redirects the flow past the partition wall becomes large,
The speed difference of the air toward the fan is leveled.

A refrigerating apparatus for a container according to claim 8 is a refrigerating apparatus for a container that cools air inside the container, and is provided with a fan that sucks in the air and a condenser that cools air supplied by the fan. In addition, a rectifying plate for rectifying the cooled air is provided behind the condenser in the flow direction of the air.

In the present invention, by providing a rectifying plate for rectifying the cooled air behind the condenser, it is possible to prevent an increase in pressure loss of the air after being cooled.

A container refrigeration system according to a ninth aspect is the container refrigeration system according to the eighth aspect, wherein a rear end of the straightening plate is deflected toward an air flow passage provided at a lower portion of the container. It is characterized by

In the present invention, the rear end of the straightening vane is deflected toward the air passage in the lower part of the container to facilitate the introduction of cooling air into the air passage, which also increases the pressure loss. Is prevented.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, a refrigerating apparatus 1 for a container includes a compressor 5 for compressing a refrigerant, an evaporator (condenser) 6 for exchanging heat of the compressed refrigerant with air in the refrigerator, and an inside of the refrigerator. A condenser 7 for exchanging heat between the refrigerant that has exchanged heat with air and the outside air, an evaporator fan (fan) 8 that forcibly supplies the air in the refrigerator to the evaporator 6, and a condenser fan 9 that forcibly supplies the outside air to the condenser 7. It has and.

The devices such as the evaporator 6 and the evaporator fan 8 which should be placed inside the container are on the upper wall 100a of the container 100, and the devices such as the condenser 7 and the condenser fan 9 which are outside the container are the wall 100a. Are provided in the lower part of the frame, and each device is fixed to the frame 10 forming a part of the wall part 100a. The frame 10 has a sufficient strength to support each device while accommodating each device in a smaller space.
A shape in which a portion to which the condenser fan 9 is fixed is protruded into the interior is provided. As described above, the basic configuration is the same as the conventional one.

The evaporator fan 8 is an axial flow fan as in the conventional case, but the blades constituting the fan are strip-shaped blade blades whose blade cross sections are substantially the same at any position in the blade length direction.

A fan panel 11 exposing only the evaporator fan 8 is arranged between the wall portion 100a and the upper end of the partition wall 102. On the side surfaces of the evaporator 6 and the fan panel 11, a closing plate 12 that prevents the air from flowing in from the side is arranged so that all the air sucked into the evaporator fan 8 passes through the evaporator 6. A bell mouth 13 is provided around the evaporator fan 8 to promote the inflow of air into the fan. The bell mouth 13 is provided integrally with the fan panel 12.

FIG. 3 shows a cross-sectional view of the evaporator fan 8 and its periphery as seen from the side orthogonal to the thickness direction of the partition wall 102. M in the figure is a motor for driving the evaporator fan 8. At the upper end of the partition wall 102, the first curved surface portion 1 protruding in a convex shape toward the evaporator fan 8 is formed.
5 is formed as a part of the bell mouth 13. In addition, a second curved surface portion 16 that projects in a convex shape toward the accommodation space S is formed at the upper end of the partition wall 102 as a part of the fan panel 11. First and second curved surface portions 15, 1
No. 6 is smoothly connected at the top. Furthermore, the first
The curved surface portion 15 is also smoothly connected to the throat portion (a cylindrical portion having substantially the same diameter) of the bell mouth 13 which covers the periphery of the evaporator fan 8. On the other hand, the second curved surface portion 16
It is in contact with the outer side surface 102a of the partition wall 102 at a slight angle. The curvature R1 of the first curved surface portion 15 is larger than the curvature R2 of the second curved surface portion 16, that is, the first curvature R1.
The curved surface portion 15 is finished to have a curved surface that draws a smaller arc.

In front of the evaporator fan 8 in the direction of air flow, a rectifying portion 17 covering the spindle portion of the fan.
Is provided. The straightening portion 17 has a substantially hemispherical shape having a small curvature at the top of the head and a curvature increasing toward the outer peripheral portion, and the spherical portions are arranged to face each other in the air inflow direction.

The evaporator fan 8 has the rotation axis O arranged vertically and is fixed by a bracket (not shown) between the wall portion 100a and the partition wall 102, but the rotation axis O of the evaporator fan 8 is fixed to the partition wall 102. Than wall 100
It is arranged offset from the center between the walls so as to be closer to a (the distance between the wall portion 100a and the rotation axis O is l1, and the distance between the partition wall 102 and the rotation axis O is l2. Then l1 <l2).

A plurality of rectifying plates 20 for rectifying the cooled air are provided behind the evaporator 6 in the direction of air flow, that is, below the evaporator 6. Two straightening vanes 20 are provided in each gap between the convex portion 10a of the frame 10 and the inner wall surfaces 100b and 100c on both sides of the container 100 as shown in FIG. Each straightening plate 20
Are arranged in parallel to the convex portion 10a and the inner wall surfaces 100b and 100c, and adjacent ones are also arranged in parallel at equal intervals.

The rear end portion of each straightening vane 20, that is, the lower end 21 of the straightening vane 20 is bent in an arc shape toward the center of the container 100 in the width direction. Furthermore, the lower corners 10b and 10c of the lower portion of the convex portion 10a forming the air passage together with the lower end 21 of the straightening vane 20 also have the lower end 21.
It is shaped so as to draw an arc according to the shape of.

The flow of the air flowing through the refrigerating apparatus 1 having the above-described structure will be described. The air in the refrigerator contributing to the cooling of the cargo F is introduced into the apparatus through the suction port 111 by the blowing action of the evaporator fan 8. In the process of being sucked in and passing through the evaporator 6, it exchanges heat with the refrigerant to be cooled. At this time, the air (arrow A in FIG. 3) drawn around the upper end of the partition wall 102 toward the refrigeration system 1 along the ceiling surface of the container 100 and sucked into the first curved surface portion 15 provided in the bell mouth 13. By flowing along, the flow is rectified and peeling hardly occurs, and the velocity difference (turbulence) of air toward the evaporator fan 8 is leveled.

Among the air drawn around the upper end of the partition wall 102 and sucked, the air rising along the side surface 102a of the partition wall 102 (arrow B in FIG. 3) is the partition wall 1
It will turn around the upper end of 02 and make a direction change close to a U-turn. This flow is rectified along the second curved surface portion 16 provided on the fan panel 11 so that separation is unlikely to occur, and this also equalizes the speed difference of the air toward the evaporator fan 8.

By the way, the curvature of the first curved surface portion 15 is the second
Is set larger than the curvature of the curved surface portion 16 of
This is for efficiently guiding the air in the refrigerator to the suction port 111.
The main flow of the air circulating through the interior of the container toward the suction port 111 is the flow along the ceiling surface of the container 100, and the flow rising along the partition wall 102 is the side flow.

When the curvature of the second curved surface portion 16 is increased,
The flow rising along the partition wall 102 easily wraps around the upper end of the partition wall 102. However, if the curvature of this portion is made too large, the second curved surface portion 16 is the mainstream of the container 100.
There is a risk that the flow along the ceiling surface will be separated and a downward flow will be generated along the partition wall 102. When a downward flow is generated, the flow collides with the upward flow to disturb the flow, and as a result, the shape of the second curved surface portion 16 is not utilized. Further, if the curvature of the first curved surface portion 15 is reduced, a curved surface that is smoothly connected to the throat portion of the bell mouth 13 cannot be formed, which causes peeling.

Therefore, if the curvature of the first curved surface portion 15 is made larger than the curvature of the second curved surface portion 16, the flow along the ceiling surface of the container 100, which is the mainstream, is preferentially guided to the evaporator fan 8 and the sidestream. The flow that rises along the partition wall 102 is drawn into the main flow and merges with each other, and further, separation in the bell mouth 13 is less likely to occur.

Furthermore, of the flow along the ceiling surface of the container 100, which is the main stream, the air (arrow C in FIG. 3) toward the center of the evaporator fan 8 hits the rectifying section 17 provided in front of the fan and is radially dispersed. As the air flows toward the peripheral edge of the fan, the air is less likely to be rectified and peeled off, the retention of air is suppressed, and the speed difference of air toward the evaporator fan 8 is leveled. In addition, since the evaporator fan 8 is disposed closer to the wall portion 100a of the container 100 than the partition wall 102, the radius of rotation of the air that passes through the partition wall 102 and redirects the flow becomes large, and the vicinity of the partition wall 102 is increased. The speed difference between the air that changes direction and the air that changes direction near the ceiling surface of the container 100 becomes small, and this also equalizes the speed difference of the air toward the evaporator fan 8.

The air cooled by passing through the evaporator 6 flows through the two gaps between the inner wall surfaces 100b and 100c on both sides of the container 100 and the convex portion 110a so as to avoid the convex portion 10a of the frame 10. , Partition wall 102
And the back surface of the convex portion 10a, the flow is divided into three, and joins again at the bottom of the container 100. At this time,
The air flowing through the gap between the inner wall surfaces 100b and 100c and the convex portion 110a is regulated by the straightening vane 20 and moves downward without accumulating.

Further, when the air flowing along the flow straightening plate 20 merges with the air flowing through the gap between the partition wall 102 and the back surface of the convex portion 10a, the air flows along the flow straightening plate 20 to the air flow passage 112 due to the bending of the lower end 21 of the flow straightening plate 20. It will be introduced smoothly. Air flow path 11
The air flowing into the container 2 spreads in the longitudinal direction of the container 100, and is blown into the accommodation space S from the outlets 113 provided at various places on the inner floor 103.

According to the refrigerating apparatus 1 described above, since the peripheral parts of the evaporator fan 8 are improved, the speed difference of the air flowing toward the evaporator fan 8 is equalized, so that the capacity of the evaporator fan 8 is extracted. As a result, a sufficient amount of air can be sent to the evaporator 6, and the evaporator fan 8 does not perform unnecessary work and consumes unnecessary energy as in the conventional case.

Further, a rectifying plate 20 is provided behind the evaporator 6.
Further, the cooled lower end 21 of the straightening vane 20 is deflected, so that the cooled air flows without staying, and the three divided air flows of the container 100 to avoid the convex portion 110a of the frame 110. When rejoining at the bottom,
Since the air flows into the air flow path 112 without being affected by the sudden expansion of the flow path, increase in pressure loss hardly occurs. For this reason, a sufficient amount of air can be distributed to all the corners of the container 100 without causing the evaporator fan 108 to perform extra work, and this also prevents wasteful energy consumption.

In this embodiment, the refrigerating apparatus 1 provided with two evaporator fans 8 is shown and described, but the number of fans is not limited in the present invention. Also,
In the present embodiment, the rectifying portion 17 has a substantially hemispherical shape, but the shape is not limited to a hemispherical shape as long as it is a shape that facilitates the introduction of air into the fan. Further, the number of the straightening vanes 20 is not limited to two, and it is desirable to install an appropriate number according to the size of the air passage. In addition, in the present embodiment, the lower end 21 of the current plate 20 is bent so as to form an arc, but the same effect can be obtained by bending this portion into a dogleg shape.

[0046]

As described above, according to the container refrigerating apparatus of the present invention, the fan is formed by forming the first curved surface portion projecting toward the fan at the upper end of the partition wall. When air is supplied to the condenser through the suction port by the function of, the air that flows around the upper end of the partition wall is rectified and the separation is less likely to occur, and the speed difference of the air toward the fan is equalized. The capacity can be drawn out and a sufficient amount of air can be sent to the condenser, the energy consumption of the fan can be reduced, and the refrigeration system can be operated at low cost.

According to the container refrigerating apparatus of the present invention, the second curved surface portion projecting in a convex shape toward the accommodation space is formed at the upper end of the partition wall so that the upper end of the partition wall can be wrapped around. Air that makes a direction change close to a U-turn is rectified so that separation is less likely to occur and the speed difference of the air directed to the fan is evened out, so energy consumption of the fan is reduced and low-cost operation of the refrigeration system is performed as described above. Will be possible.

According to the container refrigerating apparatus of the present invention, the curvature of the first curved surface portion is made larger than the curvature of the second curved surface portion, so that the flow along the ceiling surface of the container, which is the mainstream, has priority. Then, the flow that is guided to the fan and rises along the side wall, which is a side wall, is drawn into the main flow and merges. Furthermore, separation at the rear of the first curved surface is less likely to occur, and the difference in velocity of air toward the fan is even. Therefore, the energy consumption of the fan can be reduced and the refrigeration system can be operated at low cost as in the above case.

According to the container refrigerating apparatus of the present invention, the rectifying portion for directing the air toward the center of the fan toward the peripheral edge is provided in front of the fan to reduce the retention of the air and before the air is sucked into the fan. Since the increase in the pressure loss of the air is prevented, the capacity of the fan can be drawn out and a sufficient amount of air can be sent to the condenser, reducing the energy consumption of the fan and enabling low-cost operation of the refrigeration system. Become.

According to the container refrigerating apparatus of the present invention, by disposing the fan closer to the wall of the container than the partition wall, the radius of gyration of the air that passes the partition wall and diverts the flow becomes large, Since the speed difference of the air directed to the fan is equalized, the energy consumption of the fan can be reduced and the refrigeration system can be operated at low cost in the same manner as described above.

According to the container refrigerating apparatus of the present invention, the straightening plate for rectifying the cooled air is provided at the rear of the condenser to prevent the pressure loss of the air after being cooled from increasing. Therefore, the energy consumption of the fan can be reduced and the refrigeration system can be operated at low cost as in the above case.

According to the container refrigerating apparatus of the present invention, the rear end of the straightening vane is deflected toward the air passage in the lower portion of the container, so that the cooling air can be smoothly introduced into the air passage. Since the increase in pressure loss is prevented, the energy consumption of the fan can be reduced and the refrigeration system can be operated at low cost, as in the above case.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a structure of a container refrigerating apparatus according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a side sectional view of an evaporator fan and its periphery.

FIG. 4 is a side sectional view showing a structure of a container and a conventional container refrigerating apparatus provided in the container.

5 is a sectional view taken along line VV in FIG.

[Explanation of symbols]

1 Refrigerator 6 Evaporator (condenser) 8 Evaporator fan (fan) 10 frames 11 Fan panel 13 Bellmouth 15 First curved surface 16 Second curved surface 17 Rectifier 20 Current plate 21 Lower end (of straightening plate 20) 100 containers

Claims (9)

[Claims] 1. A refrigeration system for a container, which cools the air inside a container, wherein a partition wall defining a storage space for cargo is provided inside the container, and a space between the partition wall and a ceiling surface of the container. Is provided with a suction port that communicates with the storage space, and a fan that sucks air from the storage space through the suction port between the partition wall and the wall portion of the container and cools the air supplied by the fan. A condenser is provided, and when the partition wall is viewed in a cross-section from a side orthogonal to the thickness direction of the partition wall, a first protrusion protruding toward the fan is provided at the upper end of the partition wall. A container refrigeration apparatus having a curved surface portion. 2. A container refrigerating apparatus for cooling air inside a container, wherein a partition wall defining a storage space for cargo is provided inside the container, and a partition wall is provided between the partition wall and a ceiling surface of the container. Is provided with a suction port that communicates with the storage space, and a fan that sucks air from the storage space through the suction port between the partition wall and the wall portion of the container and cools the air supplied by the fan. A condenser is provided, and when the partition wall is viewed in a cross-section from a side orthogonal to the thickness direction of the partition wall, a second protrusion protruding toward the accommodation space is provided at an upper end of the partition wall. A refrigerating apparatus for a container, characterized in that a curved surface portion of the container is formed. 3. A container refrigeration system for cooling air inside a container, wherein a partition wall defining a storage space for cargo is provided inside the container, and a partition wall is provided between the partition wall and a ceiling surface of the container. Is provided with a suction port that communicates with the storage space, and a fan that sucks air from the storage space through the suction port between the partition wall and the wall portion of the container and cools the air supplied by the fan. A condenser is provided, and when the partition wall is viewed in a cross-section from a side orthogonal to the thickness direction of the partition wall, a first protrusion protruding toward the fan is provided at the upper end of the partition wall. A refrigerating apparatus for containers, characterized in that a curved surface portion and a second curved surface portion protruding in a convex shape toward the accommodation space are formed. 4. The refrigerating apparatus for containers according to claim 3, wherein the curvature of the first curved surface portion is larger than the curvature of the second curved surface portion. 5. A refrigeration system for cooling the air inside a container, comprising a fan for sucking the air and a condenser for cooling the air supplied by the fan, wherein the fan cools the air more than the fan. A container refrigerating apparatus, characterized in that a rectifying section for directing air toward the center of the fan to the peripheral edge is provided in the front in the flow direction. 6. The refrigerating apparatus for containers according to claim 5, wherein the rectifying portion has a substantially hemispherical shape, and the spherical portions are arranged to face each other in the inflow direction of the air. 7. A refrigerating apparatus for a container, which cools air inside a container, wherein a partition wall defining a storage space for cargo is provided inside the container, and the partition wall is provided between the partition wall and the ceiling surface of the container. Is provided with a suction port that communicates with the storage space, and a fan that sucks air from the storage space through the suction port between the partition wall and the wall portion of the container and cools the air supplied by the fan. A condenser is provided, and the fan is arranged closer to the wall portion of the container than the partition wall. 8. A refrigeration system for a container, which cools the air inside the container, comprising: a fan that sucks in the air; and a condenser that cools the air supplied by the fan. A refrigerating apparatus for containers, characterized in that a rectifying plate for rectifying the cooled air is provided behind the air flow direction. 9. The refrigerating apparatus for a container according to claim 8, wherein a rear end of the straightening vane is deflected toward an air flow path provided in the lower portion of the container.