JPH0642857A - Deep freezing container - Google Patents

Abstract

PURPOSE:To deeply freeze the air in a container and to maintain it at a cryogenic temperature by mounting freezing units at both ends of a rectangular parallelepiped container and providing a door at least one sidewall of the container. CONSTITUTION:When freezing units 100 are operated, the air in a deep freezing container is sucked into evaporation sections 15 of the units 100, cooled through an evaporator 10, and then introduced into ventilating rails 43 through a diffusing chamber 18. Most of the air is diffused from gaps of the rails 43 into the container 1, but part is guided to an air guide 44, directed upward, and diffused into the container 1. A cargo is discharged from and introduced into the container by opening a door 45. Thus, the air temperature in the container can be maintained at -55--35 deg.C.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cryogenic container.

[0002]

2. Description of the Related Art A conventional container is shown in FIG.
The container 1 has a rectangular parallelepiped shape, and a refrigeration unit 100 is attached to one end wall 2 of the container 1. By storing the cargo in the container 1 through the door 45 provided on the other end wall 2 of the container 1 and operating the refrigeration unit 100, the air temperature inside the container 1 is kept within the range of -25 ° C to + 25 ° C. The container 1 is carried on a vessel, a truck, a railroad vehicle, etc., while being maintained at a temperature arbitrarily set by.

A schematic structure of the refrigerating unit 100 is shown in FIG. 4, (A) is a front view, (B) is a sectional view taken along the line BB of (A), and (C) is a rear view. . The gas refrigerant discharged from the compressor 3 enters the water cooling condenser 5 or the air cooling condenser 4 and is condensed and liquefied there. The liquid refrigerant enters the electronic expansion valve 9 through the dryer 7 and the strainer 8 and is throttled there to undergo adiabatic expansion to become a gas-liquid two-phase refrigerant. This refrigerant enters the evaporator 10, where it evaporates and vaporizes by cooling the air in the refrigerator blown from the evaporator fan 12 driven by the motor 11. Then, this gas refrigerant returns to the compressor 3 via the accumulator 13.

As shown by the solid arrow, the air in the container 1 enters the evaporator section 15 from the suction port 14 and is urged by the evaporator fan 12, and is cooled in the process of passing through the evaporator 10. Wind path 16, blowout room
After passing through 18, the air is blown into the container 1 through the gaps between a large number of T-shaped ventilation rails 43 provided on the bottom surface of the container 1.

When the air-cooled condenser 4 is used, the motor
The condenser fan 6 is driven by 17. Then, after the temperature of the outside air is increased by exchanging heat with the gas refrigerant in the process of passing through the air-cooled condenser 4, as indicated by the dashed arrow,
The capacitor fan 6 is energized and discharged.

When using the water-cooled condenser 5, a water supply valve and a drain pipe (not shown) are connected to the cooling water inlet 19 and the cooling water outlet 20 to open the water control valve 21. Then, the cooling water supplied from the water supply pipe enters the water cooling condenser 5 through the water pipe (not shown) from the cooling water inlet 19 and heats up there by exchanging heat with the gas refrigerant. The water is discharged from the cooling water outlet 20 through the water valve 21 and the drain pipe.

The drain condensed on the evaporator 10 is dropped on the drain pan 22 and is passed through the drain hose 23 to the drain port.
Emitted from 24.

Reference numeral 41 denotes an inner and outer partition wall made of a heat insulating material, which is fastened to the end wall 2 of the container 1 by a flange formed on the entire circumference thereof. A condenser section 42 is formed at the center of the lower portion on the outside of the heat insulating wall 41, an evaporator section 15 is provided on the upper side of the condenser section 42, an air passage 16 is provided on both sides, and a condenser section 42 is provided on the lower side inside the inner and outer partition walls 41. Blowing chambers 18 are formed respectively. An evaporator 10, an evaporator fan 12, etc. are installed in the evaporator section 15. In the condenser section 42, the compressor 3,
An air-cooled condenser 4, condenser fan 6 and the like are installed.

Reference numeral 25 is a control box, 26 is a solenoid valve for liquid injection for injecting and cooling a liquid refrigerant into the compressor 3, 27 is a 200V class power plug,
28 is a 400V class power supply plug, 29 is a power transformer, 31 is an intake air temperature sensor for detecting the temperature of the air in the refrigerator that is sucked into the evaporator 10, 30 is an insertion port of a thermometer for checking the temperature sensor 31, 33 is a blown air temperature sensor for detecting the temperature of the air blown from the evaporator 10, 32 is an insertion port of a thermometer for checking the temperature sensor 33, and 34 is an outlet for detecting the refrigerant outlet temperature of the evaporator 10. A temperature sensor, 35 is an overheat prevention sensor, 36 is a discharge pipe temperature sensor for detecting the temperature of the discharge pipe of the compressor 3, 37 is an outside air temperature sensor for detecting the temperature of the outside air flowing into the air cooling condenser 4, and 38 is An inspection lid for inspecting the equipment in the evaporator section 15, 39 is a handle for attaching and detaching the inspection lid 38, and 40 is a ventilation device.

[0010]

In the conventional container described above, the air temperature in the refrigerator can be cooled to about -25 ° C.
It could not be cooled below this. On the other hand, when transporting frozen fish such as tuna and special chemical substances, the air temperature in the refrigerator must be maintained at -55 ° C to -35 ° C, and a cryogenic container for transporting these is desired. It was

[0011]

The present invention has been invented to solve the above-mentioned problems, and the gist of the present invention is to equip both ends of a rectangular parallelepiped-shaped container with refrigeration units and A refrigerated container characterized in that a door is provided on at least one of the side walls.

Ventilation rails for guiding cooling air from both refrigeration units can be provided on the bottom surface of the container, and an air guide body for diverting the cooling air upward can be installed near the center of the ventilation rails.

[0013]

In the present invention, since the air in the container is deeply cooled by the two refrigerating units because it has the above-mentioned structure, it can be maintained at -35 ° C or lower. Cargo is put in and out of the container through the door on one side wall.

Cooling air from both refrigerating units is guided to a ventilation rail and deflected upward by an air guide.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIGS. As shown in FIG. 1, refrigeration units 100 are attached to both end walls 2 of a rectangular parallelepiped container 1, and
A door 45 is provided on at least one side wall. A ventilation rail 43 that guides the cooling air from both refrigeration units 100 is provided on the bottom surface of the container 1.
An air guide body 44 that redirects the cooling air upward is installed near the center. Other configurations are similar to those of the conventional one, and corresponding members are designated by the same reference numerals.

When the refrigerating unit 100 is operated, the air in the refrigerator is drawn into the evaporator section 15 of each refrigerating unit 100 and cooled by passing through the evaporator 10, and then the air passage 16, Enter the ventilation rail 43 via the blowout chamber 18. Most of the air is blown into the container 1 through the gap of the ventilation rail 43, but a part of the air is blown into the container 1 by being guided by the air guide 44 and turning upward. Loading and unloading of cargo into the container 1 is performed by opening the door 45.

[0017]

According to the present invention, since the air in the container can be cooled by the two refrigeration units, the air in the container can be deeply cooled and maintained at an extremely low temperature.
Frozen fish such as tuna and cargo such as special chemical substances can be transported. Also, because the door is provided on one side wall of the container, 2
Two refrigeration units can be attached to both ends of the container. Therefore, since the existing refrigeration unit can be used, it is not necessary to develop a large-capacity refrigeration unit, and the air in the container can be efficiently cooled by the two refrigeration units. Further, if the air guide is provided near the center of the ventilation rail, the cooling air from both refrigeration units can be deflected upward by the air guides and smoothly blown out into the container without colliding with each other.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view with a part omitted along the line AA of FIG.

FIG. 3 is a schematic plan view of a conventional container.

FIG. 4 shows a conventional refrigeration unit, (A) is a front view,
(B) is a sectional view taken along the line BB of (A), and (C) is a rear view.

[Explanation of symbols]

 1 container 100 refrigeration unit 45 door 43 ventilation rail 44 air guide

Claims (2)

[Claims] 1. A deep-cooled container, wherein refrigeration units are attached to both ends of a rectangular parallelepiped container, and a door is provided on at least one side wall of the container. 2. A ventilation rail for guiding the cooling air from both refrigeration units is provided on the bottom surface of the container, and an air guide body for diverting the cooling air upward is provided near substantially the center of the ventilation rail. The refrigerated container according to Item 1.