JPH09217979A - Refrigerating unit for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the occurrence of draft resistance and to increase a circulation airflow by a method wherein a plate to smooth guide air in a chamber over the upper surface of an end wall is arranged at a corner part comprising the upper surface of the end wall and the inner surface of an inside outside partition wall and air in the chamber lowering through a draft trunk is smoothly guided over the upper surface of the end wall. SOLUTION: Plates 50 and 50 to smoothly guide air in a chamber over an upper surface F are arranged at a corner part comprised by the inner surface of an inside output partition wall 41 and an upper surface F of an end wall 1B and formed at the lower parts of a draft trunk 48 and 49. A corner part between the upper surface of a floor wall 1A of a container 1 and the inner surface of an end wall 1B forms a smooth curved surface 51. Air in the chamber lowering through the draft trunks 48 and 49 during operation of a refrigerating unit 100 smoothly convert a direction to a horizontal in such a manner to be guided by the plate 50 and the smooth curved surface 51 and returns in a chamber through the gap of a T-rail 43 and is raised through the gap of a cargo 35. This constitution lowers draft resistance and increases a circulation airflow.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a refrigerating unit for a container.

[0002]

2. Description of the Related Art A container stores cargo in its container and operates a refrigerating unit to keep the internal temperature of the container at a set temperature and to load it on ships, trucks, rail cars, etc. for transportation.

A conventional refrigeration unit is shown in FIG. 2, (A)
Is a left side view, (B) is a sectional view taken along line BB of (A), (C)
6B is a sectional view taken along the line CC of FIG. 6B, and FIG. 8D is a sectional view taken along the line DD of FIG. The refrigeration unit 100 includes an inner and outer partition wall 41 for partitioning the inside and the outside of the compartment.
Is fitted into an opening 2 formed in one end wall 1B of the container 1, and a flange 7 formed on the entire circumference thereof is fastened to the end wall 1B. A recess 42 is formed in the lower center of the inner / outer partition wall 41 so as to be depressed toward the inside of the compartment, and a condenser 4, a condenser fan 6, a compressor 3, a controller 30 and the like are disposed inside thereof. .

By installing the bulkhead 44 inside the inner and outer partition walls 41 with a space therebetween, a ventilation path 46 is formed above the recess 42, and both side surfaces of the recess 42 and both side walls of the container 1 are provided.
Ventilation passages 48, 49 are formed between 1C and 1D, and ventilation passages 47 are formed between the rear surface 42A of the recess 42 and the bulkhead 44.

A fan 12, an evaporator 10 and a partition plate 13 for circulating the air in the refrigerator are installed in the ventilation passage 46, and a ventilation passage 47 is provided.
A plurality of guides 32 are installed in the.

When the refrigerating unit 100 is in operation, the air in the refrigerator is sucked into the ventilation passage 46 as shown by the solid line arrow, and is cooled by the fan 12 urged to flow through the evaporator 10. This air is blown through the ventilation paths 48 and 49 and the ventilation path 47 into the interior of the refrigerator through the gaps between the T rails 43.

At the same time, the outside air is urged by the condenser fan 6, and is heated in the process of passing through the condenser 4 as indicated by the broken line arrow, and then released into the atmosphere. Note that FIG.
In, 31 is a ventilator.

[0008]

In the above-mentioned conventional refrigeration unit, the air inside the refrigerator descending through the ventilation passages 48 and 49 is formed by the upper surface F of the floor wall 1A of the container 1 and the inner surface of the end wall 1B at a right angle. There is a problem that the pressure loss of the air in the cold storage increases and the air volume decreases because it is guided by the corner portion C to change the direction at a right angle and collides with the horizontal upper surface F of the end wall 1B.

[0009]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above-mentioned problems, and the gist of the invention is that the inside and outside are fitted into an opening formed in one end wall of a container. In a container refrigeration unit having a ventilation passage formed by forming a recess that is recessed toward the inside of the compartment in the lower center of the partition wall, and both side surfaces of this recess and both side walls of the container and a bulkhead, A plate is provided at a corner formed by the upper surface of the end wall and the inner surfaces of the inner and outer partition walls at a lower portion of the ventilation passage to smoothly guide the air in the refrigerator over the upper surface of the end wall. Located in the container refrigeration unit.

Another feature is that the plate is fixed to the inner and outer partition walls.

Another feature is that the corners of the floor wall and the end wall of the container are smooth curved surfaces continuous with the plate.

Thus, the air in the cold storage which has descended through the ventilation passage is smoothly guided by the plate over the upper surface of the end wall.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is shown in FIG. 1, where (A) is a sectional view taken along the line AA of (B), and (B) is taken along the line BB of (A). Sectional drawing, (C) is a sectional view taken along the line CC of (B), and (D) is a sectional view taken along the line DD of (A).

At the corners formed by the inner surfaces of the inner and outer partition walls 41 and the upper surface F of the end wall 1B at the lower portions of the ventilation passages 48 and 49, plates 50, 50 for smoothly guiding the inside air over the upper surface F, respectively. Is installed and fixed to the inner and outer partition walls 41.

The upper surface and the end wall of the floor wall 1A of the container 1
The corner of the inner surface of 1B is a smooth curved surface as shown in Fig. 1 (A).
It is said to be 51. The other configuration is the same as that of the conventional one shown in FIG. 2, and the corresponding members are denoted by the same reference numerals and description thereof will be omitted.

During operation of the refrigeration unit 100, however, the air in the cold storage that has descended through the ventilation passages 48 and 49 is guided to the plate 50 and the smooth curved surface 51, and the direction is smoothly converted to the horizontal direction so that the clearance between the T rails 43 is increased. Then, it returns to the inside of the warehouse and goes up through the gap of the cargo 35.

[0017]

According to the present invention, since the air in the cold storage which descends the ventilation passage is smoothly guided by the plate over the upper surface of the end wall, the ventilation resistance is reduced and the circulating air volume is reduced as compared with the conventional one. Increase.

If the corners between the upper surface of the floor wall of the container and the inner surface of the end wall are formed as smooth curved surfaces continuous with the plate, the air in the refrigerator smoothly changes its direction to horizontal, further reducing ventilation resistance. be able to.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (A) is AA of (B).
A sectional view taken along the line, (B) is a sectional view taken along the line BB of (A),
(C) is a sectional view taken along line CC of (B), and (D) is D- of (A).
It is sectional drawing which follows the D line.

FIG. 2 shows an example of a conventional container refrigeration unit,
(A) is a left side view, (B) is a sectional view taken along line BB of (A),
(C) is a sectional view taken along line CC of (B), and (D) is D- of (C).
It is sectional drawing which follows the D line.

[Explanation of symbols]

 1 Container 1C, 1D Side wall 1A Floor wall 1B End wall F Top surface 2 Opening 41 Inner / external partition wall 42 Recess 44 Bulkhead 46, 47, 48, 49 Ventilation path 50 Plate 51 Curved surface

Claims (3)

[Claims] 1. A recess which is recessed toward the inside of the container is formed at the center of the lower part of the inner and outer partition walls fitted in an opening formed in one end wall of the container, and both side surfaces of the recess and the container are formed. In a container refrigeration unit having an air passage formed by both side walls and a bulkhead, inside air in a corner formed by the upper surface of the end wall and the inner surface of the inner and outer partition walls in the lower portion of the air passage. A refrigeration unit for containers, characterized in that a plate is installed which smoothly guides over the upper surface of the end wall. 2. The refrigerating unit for a container according to claim 1, wherein the plate is fixed to the inner and outer partition walls. 3. The refrigerating unit for a container according to claim 1, wherein a corner between an upper surface of the floor wall of the container and an inner surface of the end wall is a smooth curved surface continuous with the plate.