JP3317194B2 - Container refrigeration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration system for containers.

[0002]

2. Description of the Related Art FIG.
In the figure, reference numeral 51 denotes a casing which is fastened and fixed to the opening of the container, and a pair of left and right service windows 58, 58 are provided.

At the position inside the casing 51 and at the position corresponding to the lower portions of the pair of left and right service windows 58, 58, a flat fan guide 53 extends substantially across the lower portions of the service windows 58, 58. An evaporator 52 is arranged below the fan guide 53 while being arranged in a shelf shape in the horizontal direction.

As shown in FIG. 8, the fan guide 53 is formed of a horizontally long rectangular flat plate made of an aluminum plate having a width extending across the rear surface of the casing 51 in the width direction. Both ends 53a, 53b are mounted and supported on brackets 59, 60 provided on the casing 51 side and fastened and fixed by fixing bolts 61, 61,. The pair of edges 53c, 53d facing each other in the depth direction of the fan guide 53 are ribs 64, 65 formed by bending the edge of the fan guide 53.

The fan guide 53 is attached to the casing 51 when the fan guide 53 is attached to the casing 51.
A pair of left and right guide holes 57 having a predetermined diameter are formed at positions corresponding to the service windows 58 on the side. In the guide holes 57 of the fan guide 53, an in-compartment fan 54 having a fan motor 55 is mounted in a state supported by a stay 56. In this case, the inside fan 54 is relatively heavy, and the rigidity of the fan guide 53 at the guide hole 57 is lower than that of the other portions due to the formation of the guide hole 57. Therefore, when the internal fans 54, 54 are attached to the fan guide 53, it is necessary to secure a proper support strength by compensating for a decrease in rigidity of the fan guide 53 due to the formation of the guide hole 57. .

[0006] From this viewpoint, conventionally, as shown in FIG.
Reinforcing members 62, 62 made of, for example, a stainless steel plate are lined around the periphery of the guide holes 57, 57 around the periphery of the guide members 57, 57.
Are fastened and fixed with fixing bolts 63, 63, respectively, and integrated with the fan guide 53. The rigidity of the reinforcing members 62, 62,... Secures the required rigidity of the fan guide 53. Thus, an appropriate support strength of the in-compartment fan 54 is obtained.

[0007]

However, in the case where the reinforcing member 62 made of a stainless steel plate is backed at the portion corresponding to each of the guide holes 57, 57 of the fan guide 53, the fan guide 53 is reinforced. (A) The number of members is increased by the amount required for the reinforcing member 62, and the number of steps for attaching the reinforcing member 62 to the fan guide 53 is also required separately. As a result, the manufacturing cost of the refrigeration system is increased. (B) Since the reinforcing member 62 itself is relatively heavy, the overall weight of the fan guide 53 provided with the reinforcing member 62 increases, and the fan guide 53 at the time of installation work of the fan guide 53 is increased. There is a problem that handling of the fan guide 53 is inconvenient, and the assembling workability is deteriorated accordingly.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a container refrigeration system in which the support strength of a fan guide is effectively increased by a simple and inexpensive structure, thereby reducing manufacturing costs and improving assembly workability. It was done.

[0009]

Means for Solving the Problems In the present invention, the following configuration is adopted as specific means for solving such problems.

In the first invention of the present application, the inner surface 2 of the casing 2 which is fixedly fastened to the opening 42 of the container 41 so as to close the opening 42 and provided with the service window 7 is provided.
A guide hole 1 is provided in a portion corresponding to the service window 7 on the side b.
A flat fan guide 18 provided with a fan 9 is disposed in a state of crossing the service window 7 in a substantially horizontal direction and extending forward from the inner surface 2b in a shelf shape. In a container refrigeration system in which the internal fan 15 connected to the output shaft of the motor 16 faces the guide hole 19 by the stay 17, a longitudinal end 18 a of the fan guide 18 is provided.
18b are fixed to the casing 2 side by fixing bolts 32 , 32 ,..., Respectively, and the guide at one edge 18c of the two short edges 18c, 18d which is close to the service window 7 is provided. It is characterized in that the holes 19 are fixed on the inner surface 2b side of the casing 2 by fixing bolts 31 , 31 ,... At positions respectively located on both sides of the hole 19 in the longitudinal direction.

According to a second aspect of the present invention, in the container refrigeration apparatus according to the first aspect, the both ends 18c and 18d of the fan guide 18 in the short axis direction are located far from the service window 7. It is characterized in that a reinforcing rib 23 extending in the long axis direction is provided on one other edge 18d along the edge 18d.

In a third aspect of the present invention, in the container refrigeration apparatus according to the first aspect, a plurality of guide holes 19 are formed in the fan guide 18 at appropriate intervals in the left-right direction. The service window 7 has a horizontally long rectangular opening, and the plurality of guide holes 1 on the fan guide 18 side of the service window 7.
At a position corresponding to an intermediate portion of 9, 19,..., A reinforcing stay 9 that enables the one edge portion 18c of the fan guide 18 to be fastened and fixed by the fixing bolt 31 is provided. .

According to a fourth aspect of the present invention, in the container refrigeration apparatus according to the third aspect, a service door 8 integrally formed so as to have a horizontal rectangular plane shape is provided on the horizontal rectangular service window 7. It is characterized by being detachably attached.

[0014]

According to the present invention, the following effects can be obtained by adopting such a configuration.

According to the container refrigeration apparatus according to the first aspect of the present invention, both ends 18a and 18b of the fan guide 18 in the longitudinal direction are fixed to the fixing bolts 32 1 , 32 2 ,.
And a guide hole provided in the fan guide 18 at one edge 18c of the both edges 18c and 18d in the short axis direction which is close to the service window 7 of the casing 2. The portions located on both sides of the fan guide 18 in the longitudinal direction of the fan guide 18 are fixed to the inner surface 2b side of the casing 2 by fixing bolts 31 , 31 ,. , Its longitudinal ends 18a, 18b, and the guide holes 19, which reduce the rigidity of the fan guide 18.
(I.e., the intermediate position in the long axis direction of the fan guide 18) is fixed to the casing 2 side. For example, in the case of a conventional configuration in which only both ends of the fan guide are supported and fixed In comparison with the above, the rigidity of the fan guide 18 is maintained high despite the formation of the guide hole 19 and without providing a dedicated reinforcing member.

As a result, the manufacturing cost of the refrigeration system can be reduced by reducing the number of components of the fan guide 18 and the associated man-hours. In addition, the fan guide 1 does not require a reinforcing member as in the related art.
8 can be lightened, the handling of the fan guide 18 in the assembling work becomes easy, and the improvement of the assembling workability can be expected.

[0017]  For container according to the second invention of the present application
According to the refrigeration system, in addition to the effects described above,
Unique effects can be achieved. That is, in the present invention,
Both short edges 18c, 18d of the fan guide 18 in the short axis direction
Of the other edge located far from the service window 7
A portion 18d extends in the longitudinal direction along the edge 18d.
The other edge 1
8d, the rigidity is increased by the ribs 23.
The support rigidity is increased by fixing to the casing 2 side.
By the synergistic effect with the increased one edge 18c,
An intermediate portion of the fan guide 18 in the long axis direction,
The rigidity of the portion where the guide holes 19 and 19 are formed is more improved.
Layer is maintained high, and the supporting strength for the fan 15 in the refrigerator is maintained.
Is further enhanced.

According to the container refrigeration apparatus of the third aspect of the present invention, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, the guide holes 19 are formed in the fan guide 18 at appropriate intervals in the left-right direction, while the service window 7 of the casing 2 is formed as a horizontally long rectangular opening. , The one edge 18c of the fan guide 18 can be fixedly fastened by the fixing bolt 31 at a position corresponding to an intermediate portion of the plurality of guide holes 19, 19,. Since the reinforcing stay 9 is provided, the intermediate portion of the one edge portion 18c of the fan guide 18 is fastened and fixed to the reinforcing stay 9 by using the reinforcing stay 9, thereby providing a high support strength for the internal fan 15. , In particular, the fan guide 18 is provided with a plurality of internal fans 15, 15,. Service window 7 of ring 2 is made possible to apply the present invention to a refrigeration apparatus having such there is no member for supporting the intermediate portion of the fan guide 18 is a horizontally elongated rectangular opening configuration.

According to the container refrigeration apparatus of the fourth aspect of the present invention, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, since the service door 8 integrally formed so as to have the horizontal rectangular planar shape is detachably attached to the horizontal rectangular service window 7, for example, two conventional service windows are provided as in the related art. Compared to the case of a configuration in which one member is arranged, the cost can be reduced by reducing the number of members.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a container refrigeration apparatus according to the present invention will be specifically described based on preferred embodiments.

1 to 3 show a container refrigeration apparatus 1 according to a preferred embodiment of the present invention. As shown in FIG. 1, the refrigerating apparatus 1 is mounted from the outside to an opening 42 provided at an end of a container 41 formed of a rectangular box, and freezes and stores the contents of the container 41 in the refrigerator. The casing 2 is fastened and fixed to the opening 42.

As shown in the above figures, the casing 2 has a rectangular planar shape and is partitioned at a middle position in the vertical direction, and a lower portion thereof is a storage outside device housing portion 2A facing the storage outside. The upper part is a storage-side device housing portion 2B facing the storage side. The outer device housing portion 2A has a recessed shape that is recessed from the outer surface 2a of the casing 2 into the inside of the container.
1, a device such as a compressor 12 and an electric component box 13 is housed. Further, the inside-of-compartment-unit accommodation section 2B is a space opened to the inside-of-compartment surface 2b side of the casing 2, and a fan guide 18 which is a gist of the present invention described below is provided with a shelf in a substantially horizontal direction. The evaporator 14 is disposed below the fan guide 18, and the in-compartment fan 15 described below is disposed above the fan guide 18.

The casing 2 is provided with the casing 2 shown in FIGS.
As shown in FIG. 3, the outer casing 3 has a two-layer structure of an outer casing 3 constituting the outer surface 2a of the refrigerator and an inner casing 4 constituting the inner surface 2b of the refrigerator. The outer casing 3 and the inner casing 4 are arranged to face each other at a predetermined interval, and A heat insulating layer 5 is provided between the two.

Further, a service window 7 having a horizontally long rectangular plane form and a pair of upper and lower ventilation ports 10 and 10 are provided at an upper portion of the casing 2 in a state where the service window 7 penetrates the casing 2 in a thickness direction thereof. Is formed. The service window 7 includes a service door 8 having a horizontally long rectangular plane shape.
(See FIGS. 2 and 5) are detachably attached.
Therefore, originally, the service window 7 is a complete horizontally long rectangular opening. However, in this embodiment, from the viewpoint of reinforcing the service window 7 itself and securing its rigidity. A reinforcing stay 9 is formed at an intermediate position in the width direction of the service window 7 so as to extend the inner casing 4 so as to partition the service window 7 on both left and right sides and extend in the vertical direction (see FIG. 5). The reinforcing stay 9 functions as a support and fixing member for the fan guide 18 described below, in addition to its original reinforcing function, as described later.

As shown in FIGS. 4 to 6, the fan guide 18 is formed of a flat plate made of aluminum having a horizontally long rectangular plane shape. And this fan guide 1
Reference numeral 8 denotes both ends 18a and 18b in the long axis direction (width direction) as support fixing portions 25 and 25, respectively, and one of the two edges 18c and 18d in the short axis direction (depth direction). 18c is provided with a first rib 23 having an "I" -shaped cross-section formed by raising the substrate in a substantially perpendicular direction, and the other edge 18d is provided with a first rib 23 standing in a substantially perpendicular direction. After being raised, the distal end is bent inward in the plane direction of the fan guide 18 so as to be substantially orthogonal to the “L”.
The second rib 24 has a U-shaped cross section. Therefore, the pair of edges 18c, 18d of the fan guide 18 is provided.
In between, the other edge 1 having the second rib 24
8d is one edge 18c provided with the first rib 23.
Bending rigidity is higher than that.

The fan guide 18 is provided with a pair of left and right guide holes 19, 19 each having an opening of a predetermined diameter and arranged in parallel at a predetermined interval in the longitudinal direction of the fan guide 18. In each of the guide holes 19, a fan 15 connected to an output shaft of a fan motor 16 is provided with a bridge-like stay 1 from the upper surface side of the fan guide 18.
7 is attached.

The fan guide 1 constructed as described above.
Numeral 8 is arranged on the inner surface 2b side of the casing 2 and substantially horizontally so as to extend forward from the inner surface 2b across the lower part of the service window 7 like a shelf. In the fan guide 18, in the arrangement state, the support fixing portions 25 at both ends in the width direction are connected to the casing 2.
It is fixed to the casing 2 side by placing it on each guide receiving member 21, 22 provided on the side and fastening it with fixing bolts 32, 32. The one edge portion 18c of the fan guide 18 abuts against the surface of the inner casing 4 of the casing 2 and the reinforcing stay 9 while crossing the service window 7 in the width direction. It is arranged in the state where it did. And
A substantially central position in the longitudinal direction of the one edge portion 18c is fastened and fixed to the reinforcing stay 9 by fixing bolts 31, 31, and a portion located outside of the guide holes 19, 19 in the width direction is It is fastened and fixed to the inner casing 4 by fixing bolts 31, 31. Accordingly, one edge 18c of the fan guide 18 is fixedly supported on the casing 2 side at a position where the guide holes 19, 19 straddle the fan guide 18 in the longitudinal direction. In this way, the guide holes 19 of the fan guide 18 fixedly supported on the casing 2 side,
The in-compartment fans 15, 15 are attached to 19 parts, respectively.

The other edge 1 of the fan guide 18
8d, as shown in FIG. 1, a back plate 6 attached to the rear side of the inside device housing portion 2B of the casing 2 as shown in FIG.
The upper edge of the rear plate 6 is abutted, but the other edge 18d and the back plate 6 are connected via a free nut (not shown). Therefore, the back plate 6 functions somewhat as a support member for the other edge portion 18d, but since the universal nut has flexibility in displacement in a direction perpendicular to the fastening direction, the fan guide It is not considered as a component of the fixing structure 18.

The fan guide 18 mounted on the casing 2 as described above has the following specific effects based on the mounting structure.

That is, in the refrigerating apparatus 1 of this embodiment, both ends 18a, 18b of the fan guide 18 in the longitudinal direction (width direction) are fixed to the fixing bolts 32 , 32 ,.
The guide receiving members 2 on the casing 2 side
1 and 22, and at one edge 18c of the casing 2 close to the service window 7,
The four portions of the fan guide 18 which sandwich the pair of guide holes 19 provided in the fan guide 18 in the longitudinal direction of the fan guide 18 are respectively fixed by fixing bolts 31 1 , 31 ,. It is fixed to the reinforcing stay 9.

Therefore, the fan guide 18 has two ends 18a and 18b in the longitudinal direction thereof and portions corresponding to the guide holes 19 and 19, which reduce the rigidity of the fan guide 18, on the casing 2 side. It will be fixed. For this reason, in contrast to the conventional configuration in which only the both ends of the fan guide are supported and fixed, despite the fact that the guide holes 19 are formed, no dedicated reinforcing member is provided. In both cases, the rigidity of the fan guide 18 can be maintained high.

As a result, the number of parts can be reduced and the number of parts can be reduced as compared with a conventional structure in which only both ends of the fan guide are fixed and a dedicated reinforcing member is provided in the guide hole portion to reinforce it. The accompanying reduction in the number of work steps makes it possible to reduce the manufacturing cost of the refrigeration system 1 and to reduce the weight of the fan guide 18 by the amount that does not require a reinforcing member. The fan guide 1 is easy to handle.
8 improves the workability in the assembling work.

Further, in the other edge portion 18d, which cannot be expected to improve rigidity by being fixed to the casing 2 side, like the one edge portion 18c, the one edge portion 18c
Having a configuration having a higher cross-sectional performance than the first rib 23 on the side.
The provision of the ribs 24 increases the rigidity. Accordingly, the fan guide 18 has higher rigidity in combination with the improvement in rigidity of the one edge portion 18c fixed to the casing 2, and the fan guides 18 allow the internal fans 15, 15 to be hardened. The supporting strength can be further increased.

Further, as in this embodiment, the reinforcing stay 9 provided at the intermediate position in the width direction of the service window 7 is used as one of the support members of the fan guide 18 so that the fan guide 18 is supported. In the refrigerating apparatus 1 including the service window 7 having a large opening extending over the entire length,
The high rigidity of the fan guide 18 can be ensured, and the applicability of the fan guide mounting structure as described above to a refrigeration system is improved accordingly.

[Brief description of the drawings]

FIG. 1 is a side view showing a preferred embodiment of a container refrigeration apparatus according to the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 1;

FIG. 4 is an enlarged view taken along the line IV-IV of FIG. 3;

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 4;

FIG. 6 is an enlarged sectional view taken along the line VI-VI of FIG. 4;

FIG. 7 is a front view of a conventional container refrigeration apparatus.

FIG. 8 is an enlarged view taken along VIII-VIII in FIG. 7;

[Explanation of symbols]

1 is a refrigeration system, 2 is a casing, 3 is an outer casing, 4
Is an inner casing, 5 is a heat insulating layer, 6 is a back plate, 7 is a service window, 8 is a service door, 9 is a reinforcing stay, 10 is a ventilation port,
11 is a condenser, 12 is a compressor, 13 is an electric box, 14 is an evaporator, 15 is a fan in a refrigerator, 16 is a fan motor, 17
Is a stay, 18 is a fan guide, 19 is a guide hole, 21
And 22, a guide receiving member, 23 and 24, ribs, 25, a support fixing portion, 31 and 32, fixing bolts, 41, a container, and 42, an opening.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F25D 17/06 302

Claims (4)

(57) [Claims] An inner surface (2b) of a casing (2) which is fastened and fixed to an opening (42) of a container (41) so as to close the opening (42) and has a service window (7). In the part corresponding to the service window (7) on the side,
A flat fan guide (1) having a guide hole (19)
8) is disposed in a state of crossing the service window (7) in a substantially horizontal direction and extending forward from the inner surface (2b) in a shelf shape, and a fan motor (18) is provided on the fan guide (18). 16) The internal fan (1) connected to the output shaft
5) A container refrigeration apparatus which is mounted with a stay (17) facing the guide hole (19), wherein the fan guide (18) has both ends (18a), ( 18b) are fixed to the casing (2) side by fixing bolts (32) , (32) ,... Respectively, and of both edges (18c) and (18d) in the short axis direction,
One edge (18c) adjacent to the service window (7)
Is the guide hole (1) at the one edge (18c).
9) is fixed to the inner surface (2b) side of the casing (2) by fixing bolts (31) , (31) ,. Characteristic refrigeration equipment for containers. 2. The fan guide (18) according to claim 1, wherein both edge portions (18) in the short axis direction of the fan guide (18).
c) and (18d), the other edge (18d) far from the service window (7) is attached to the edge (18d).
d), the reinforcing ribs (2
(3) A container refrigeration apparatus characterized in that (3) is provided. 3. The service window (7) of the casing (2) according to claim 1, wherein a plurality of the guide holes (19) are formed in the fan guide (18) at appropriate intervals in the left-right direction. In the service window (7), a position corresponding to an intermediate portion of the plurality of guide holes (19), (19),... On the side of the fan guide (18) is provided. A refrigeration system for a container, comprising: a reinforcing stay (9) that enables the one edge (18c) of the fan guide (18 ) to be fixedly fastened by a fixing bolt (31) . 4. The service window (7) according to claim 3, wherein a service door (8) integrally formed so as to have a horizontal rectangular planar shape is detachably attached to the horizontal rectangular service window (7). Refrigeration equipment for containers.