JP2500340Y2 - Low temperature liquefied gas dropping device - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] This invention applies to beverages such as cans and bottles.
A low temperature liquefied gas dropping device that drops low temperature liquefied gas into a container
Concerned.

[0002]

2. Description of the Related Art Conventionally, a beverage container after sealing the beverage container
Beverages when this gas contracts due to the cooling of the gas inside
Deformation of the container, oxidation of drinking water by the air in the beverage container, etc.
In order to prevent the
It is filled. This low temperature liquefied gas is
After filling with water, from the drip port of the bottomed cylindrical container to the beverage container
Dropped inside. Then put the can lid on the beverage container,
Tighten the can lid onto the beverage container. By the way, drop the container
Since the vicinity of the mouth is cooled by the low temperature liquefied gas, this drop
When freezing or condensation occurs due to moisture in the air near the lower mouth
There is. When freezing occurs, this freezing closes the drip port.
Blockages, leading to variations in the quality of drinking water and production lines.
May be interrupted. Also, if condensation occurs,
Water from this condensation will fall into the beverage container and
The quality might change. This prevents freezing and condensation.
The purge gas that stops is flowed near the dropping port.

[0003]

[Problems to be solved by the invention] This purge gas is dropped
A large amount of purge gas is required because it flows around the mouth.
Therefore, the cost required for the purge gas becomes large. In addition,
-If the gas is intensively blown near the drip port, it will come with a drip port.
Since convection occurs in the vicinity and air flows near the drip port, drip
Prevention of blockage and dew condensation due to freezing of the mouth was insufficient.

[0004]

In order to solve the above-mentioned problems, the present invention has a double structure of a bottomed cylindrical inner shell and a bottomed cylindrical outer shell that surrounds the inner shell. In the low temperature liquefied gas dropping device, a vacuum portion is formed between the inner shell and the outer shell, and a dropping pipe for dropping the low temperature liquefied gas in the inner shell is attached to the bottom of the inner shell. The lower end of the drip pipe splash is arranged between the inner shell and the outer shell,
The bottom of the outer shell has an upper end between the inner shell and the outer shell.
Is placed so that it does not come into contact with the lower end of the dripping pipe.
In addition, a passage pipe for passing the low temperature liquefied gas dripping from the dropping pipe is attached, and a partition for partitioning the periphery of the passing pipe and the dropping pipe from the vacuum portion is attached to the bottom of the inner shell and the bottom of the outer shell. Provided is a low temperature liquefied gas dropping device in which each end of a pipe is attached and a purge gas introducing pipe for sending a purge gas is attached to an outer shell between the partition pipe and the passage pipe.

[0005]

[Operation] The low-temperature liquefied gas in the inner shell is between the inner shell and the outer shell.
Enter the passage pipe from the dripping pipe and pass through this passage pipe.
It is dropped over. Also, the dry purge gas is
Sent from the introduction pipe between the partition pipe and the passage pipe,
A laminar flow is formed in the lower direction through this passage pipe.
It is released into the atmosphere.

Therefore, the dry purge gas passes through the passage pipe.
These gases pass through because they pass with the low temperature liquefied gas
There is no convection with the outside air in the pipe, and the outside air is
There is no intrusion. That is, the dry purge gas passes through
Flows outside and inside the pipe and is surrounded by this dry purge gas.
The low temperature liquefied gas passes through the passage pipe,
The outside air does not enter into the
Since it is not cooled by contact,
Freezing and dew condensation are prevented and the entire area around the drip port is protected.
Amount of dry purge gas required compared to flowing
Can be reduced.

[0007]

An embodiment will be described with reference to FIG. The container used for dropping the liquefied gas is an external cylinder (with
A bottom pipe-shaped outer shell 1 and an inner cylinder (bottomed-cylindrical inner shell) 3 are provided.
It is attached .

A stainless bellows (partition pipe) 5 is provided around the drip port 4 in order to shield the vacuum wall and minimize heat conduction from the outer cylinder 1 to the inner cylinder 3.

A small-diameter pipe (passage pipe) 6 having a diameter of about 8-12 mm is installed vertically below the drip port 4 to prevent convection.

Since the pipe 6 passes nitrogen gas as a purge gas through the purge gas introduction pipe 8 to the vicinity of the dropping nozzle and the bellows 5 uniformly, the lower portion of the cover 7 installed so as to surround the dropping nozzle and the vicinity of the bellows 5. Fixed to.

The dry purge gas directly uses the vaporized gas of the low temperature liquefied gas container.

That is, the low temperature liquefied gas dropping device is formed in a double structure of an inner cylinder 3 having a bottomed cylindrical shape and an outer cylinder 1 having a bottomed cylindrical shape surrounding the inner cylinder 3. A vacuum unit 2 is formed between the inner cylinder 3 and the outer cylinder 1. At the bottom of the inner cylinder 3, a lower end portion is located between the inner cylinder 3 and the cylinder 1, and a drip pipe having a drip port 4 for dropping the low temperature liquefied gas in the inner cylinder 3 is attached. . At the bottom of the outer cylinder 1, the upper end is between the inner cylinder 3 and the outer cylinder 4,
It is arranged so that it does not contact the lower end of the dripping pipe.
A small-diameter pipe 6 is attached to allow the low-temperature liquefied gas dropped from the dropping pipe to pass therethrough. At the bottom of the inner cylinder 3 and the bottom of the outer cylinder 1, each end of a cylindrical bellows 5 for partitioning the periphery of the passage pipe and the small-diameter pipe 6 and the vacuum portion 2 is attached. Also, on the bottom of the outer cylinder 1,
A purge gas introducing pipe 8 for sending a dry purge gas is attached between the bellows 5 and the small diameter pipe 6.

[0013]

Since the present invention is constructed as described above, it has the following effects. That is, this invention
According to the above, the dry purge gas is sent from the purge gas introduction pipe.
This dry purge gas is fed to the partition pipe and the passage pipe.
Between the cold liquefied gas. others
Therefore, these gases do not convection with the outside air in the passage pipe.
Outside air does not enter the passage pipe. That is,
Dry purge gas flows outside and inside the passage pipe,
The low temperature liquefied gas is surrounded by the dry purge gas of the pipe
The outside air does not enter the passage pipe, and the outside air
Since it is not directly cooled by the low temperature liquefied gas, the passage pipe
And that it can sufficiently prevent freezing and dew condensation around the area
By the way, compared with the case of flowing the purge gas around the whole of the dropping port,
The amount of dry purge gas required can be reduced. Accordingly
Therefore, the cost required for the dry purge gas can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a low temperature liquefied gas dropping device according to an embodiment of the present invention.

[Explanation of symbols]

1 Outer cylinder 2 Vacuum part 3 Inner cylinder 4 Dripping port 5 Bellows (partitioning pipe) 6 Small diameter pipe (passing pipe) 7 Cover 8 Purge gas introducing pipe

Claims (1)

(57) [Scope of utility model registration request] 1. A double structure having a bottomed cylindrical inner shell and a bottomed cylindrical outer shell covering the periphery of the inner shell, wherein a vacuum portion is provided between the inner shell and the outer shell. In the low-temperature liquefied gas dropping device, in which a dropping pipe for dropping the low-temperature liquefied gas in the inner shell is attached to the bottom of the inner shell, the lower end portion of the dropping pipe has an inner shell and an outer shell. Placed between and
The bottom of the outer shell has an upper end between the inner shell and the outer shell.
Is placed so that it does not come into contact with the lower end of the dripping pipe.
In addition, a passage pipe for passing the low temperature liquefied gas dripping from the dropping pipe is attached, and a partition for partitioning the periphery of the passing pipe and the dropping pipe from the vacuum portion is attached to the bottom of the inner shell and the bottom of the outer shell. A low-temperature liquefied gas dropping device, wherein each end of a pipe is attached, and a purge gas introduction pipe for sending a purge gas between the partition pipe and the passage pipe is attached to an outer shell.