JPH0614699U - Low temperature liquefied gas dropping device - Google Patents

Abstract

(57) [Summary] [Purpose] In a liquefied gas dropping device, prevent freezing of the dropping port. [Structure] A pipe having a small diameter was provided below the dropping port, and the purge gas passing around the dropping port was made to pass from the upper portion of the pipe having the small diameter.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a method of substituting and enclosing an inert gas in a beverage container such as a can and a bottle.

[0002]

[Prior art]

 Conventionally, there was a method of preventing freezing and dew condensation at and around the dropping port by ejecting the purge gas near the dropping port.

[0003]

[Problems to be solved by the device]

 In this conventional method, a large amount of purge gas is required and convection is likely to occur, so that the prevention of freezing and condensation of water in the atmosphere was insufficient.

[0004]

[Means for Solving the Problems]

 In order to eliminate the above-mentioned problems, this invention can be achieved by providing a small-diameter pipe under the drip opening so as to penetrate the cover for flowing the purge gas so as to wrap around the drip opening. it can.

[0005]

[Action]

 The liquefied gas dripping from the dripping port passes through the small-diameter pipe and enters the lower container, while a small amount of purge gas evenly covers the dripping port and its surroundings, and enters from the upper part of the small-diameter pipe to the atmosphere. Released inside.

[0006] Therefore, there is no convection in the pipe, and therefore no invasion of outside air, freezing and dew condensation in the vicinity of the dropping port and its surroundings are prevented, and the purpose can be achieved with a small amount of perci gas.

[0007]

EXAMPLE An example will be described with reference to FIG. The container used for dropping the liquefied gas is composed of an outer cylinder 1 and an inner cylinder 3 with a vacuum unit 2 in between, and has a dripping port 4 in the lower part of the inner cylinder 3.

Around the drip opening 4, a stainless bellows 5 is provided in order to block the vacuum wall and minimize heat conduction from the outer cylinder 1 to the inner cylinder 3.

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

The pipe 6 passes nitrogen gas as a purge gas through the purge gas introduction pipe 8 to the dropping nozzle and the vicinity of the bellows 5 uniformly, so that the cover 7 installed so as to surround the dropping nozzle and the vicinity of the bellows 5. Fix at the bottom.

As the dry purge gas, the vaporized gas in the high pressure liquefied gas container is directly used.

[0012]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The liquefied gas that has been dropped and the purge gas that has been supplied to the lower part of the inner cylinder do not cause convection in the small-diameter pipe, so icing and condensation are prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part according to the present invention.

[Explanation of symbols] 1 outer cylinder 2 vacuum part 3 inner cylinder 4 drip port 5 bellows 6 small diameter pipe 7 cover 8 purge gas introduction pipe

Claims (1)

[Scope of utility model registration request] 1. A low-temperature liquefied gas dropping device is provided with a pipe having a small diameter at a lower portion of a dropping port, the dropping gas is dropped through the pipe, and a dry purge gas is sent so as to wrap around the dropping port. However, it is arranged so that it passes through the small-diameter pipe from above and exits to the outside air.