JPS61201614A - Solid carbon dioxide producing apparatus - Google Patents

Abstract

PURPOSE:To produce easily solid carbon dioxide in a consumption site and to enable it to be taken out by using a lever having a recess and a stopping bar and fixing tightly a frame body and a cover to constitute a production chamber. CONSTITUTION:A production chamber is constituted by fixing tightly both a frame body 4 which is constituted of a material low in the thermal conductivity and excellent in the resistance to low temp. and a freely attachable and detachable cover 12 with a lever 31 having a recess 32 and a freely rotary stopping bar 33. Liquid CO2 is injected to the inside of the production chamber via a nozzle 7 from a high-pressure vessel housed with liquid CO2 and decompressed to expand it adiabatically and a mixture of the snowy solid CO2 and gaseous CO2 is produced in the inside of the production chamber. Thereafter only the gas is flown out to the outside of the production chamber and solid CO2 is compressed and molded and a product of the produced solid CO2 is taken out by opening a door 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus capable of producing solid carbon dioxide as needed with a small-scale apparatus.

[Conventional technology]

Solid carbon dioxide, commonly called dry ice, is
It is widely used because it can easily reach temperatures as low as -79°C and does not wet the object to be cooled.

Solid carbon dioxide can be obtained by compressing and liquefying carbon gas and adiabatically expanding the liquid carbon dioxide under high pressure. and comparatively smaller devices. In the former case, when transporting from a production site such as a factory to each consumption site, there are limits to cold storage methods, and there is a drawback that it is not easy to use.
Even if the equipment is miniaturized, the structure of the manufacturing equipment itself becomes complicated, which not only increases costs, but also because the equipment is made of materials such as metals, which makes it difficult to produce solid carbon dioxide. The problem was that the heat loss due to thermal conduction was large, making it uneconomical.

For this reason, the applicant has already developed a technology related to an apparatus for obtaining a required amount of solid carbon dioxide as needed.

An example of this is specifically shown in FIG. 6. Its main components are a solid carbon dioxide production device 1, a high pressure container 2 containing liquid carbon dioxide, an adiabatic high pressure supply pipe 3, and a frame 4. It is something that exists.

That is, the connection part 6 of the valve 5 of the high-pressure vessel 2 is connected through a pole-type pressure reducing valve (not shown).

One end of the supply pipe 3 is connected, and the other end of the supply pipe 3 is connected to the lid 21 of the frame 4 via a nozzle 7 as appropriate.

Further, a pressure gauge 13 is attached to one end of the supply pipe 3. The supply pipe 3 is mainly made of rubber, reinforced with metal wire, and is flexible and has high high-pressure characteristics and low-temperature characteristics.

The frame body 4 constituting the molding chamber 14 is attached to the removable side plate 17.1 via the retaining groove 16 formed in the bottom plate 15.
7 is installed upright, and there is an oblong window 18 on the side panel 17.
is formed, and a filter 19 of a predetermined mesh is attached to the inner surface thereof.

On the other hand, the door 21, which can be expanded via the hinge 20 on the bottom plate 15, is attached to the bottom plate 15 through the engagement grooves 22, 22 on both sides thereof.
The window 1 is erected in close contact with both side edges of the side plate 17.
8 is formed, and a filter 19 is attached.

Further, the door 21 is provided with a locking device 23 of a snap lock type, for example.
．． 23 is attached, and the locking tool 23 engages with a stopper 24 attached to the lid 12 to firmly fix the frame 4. 28 is solid carbon dioxide.

However, this locking device was a locking device that still left room for improvement in its function as a snap-lock type locking device.

[Purpose of the invention]

This invention enables solid carbon dioxide to be produced immediately, safely and easily at the consumption site when needed, is compact and easy to handle, and can reliably secure a molding chamber, while forming solid carbon dioxide. This invention relates to an apparatus for producing solid carbon dioxide that can be easily taken out.

[Summary of the invention]

The present invention relates to a solid carbon dioxide production device that has a feature of tightness between a stopper and a lid constituting a molding chamber. In the device.

The present invention relates to a solid carbon dioxide production device that is equipped with a liquid carbon dioxide inlet on the top surface of the lid and that forms a molding chamber airtight by using a lever and a locking tool that has a recess between it and the frame. .

[Embodiments of the invention]

Solid carbon dioxide is generally produced by the following process.

That is, carbon dioxide is supplied from a high-pressure container containing liquid carbon dioxide to an adiabatic high-pressure supply pipe led to the molding chamber via a pressure reducing valve and a safety valve, and is injected into the molding chamber from the tip of the tube.

The present invention will be explained below using the drawings.

FIG. 1 shows the insulating high-pressure supply pipe leading from the main container of the frame 4 forming the molding chamber of the solid carbon dioxide production apparatus formed according to the present invention to the molding chamber via a pressure reducing valve and a safety valve. Carbon is supplied and injected into the molding chamber from the tip of the tube.

The high-pressure liquid carbon dioxide undergoes adiabatic expansion and partially turns into snow, and the vaporized carbon dioxide continues to turn into snow inside the molding chamber while being released into the atmosphere through a window formed in the frame. The basic idea is that solid carbon dioxide is compression molded in a mold, and the molded solid carbon dioxide is taken out by disassembling the frame.

The frame forming the molding chamber is made of a material with low thermal conductivity and excellent low temperature resistance, such as wood or plastic.

This makes it possible to provide an excellent solid carbon dioxide production device that is inexpensive and has high thermal efficiency.

The present invention will be explained below using the drawings.

FIG. 1 is a front view of a frame 4 forming a molding chamber of a solid carbon dioxide production apparatus formed according to the present invention, and FIG. 2 is a side view thereof, and 31 in the figure is a handle lever. , 32 is a recess for holding a locking tool, and 33 is a locking tool.

In this case, the handle lever 31 is provided on the lid 12 of the frame 4 forming the molding chamber 14, and a part of the handle lever 31 is provided with a locking tool 3.
A recess 32 is provided to securely hold 3 in the mouth to ensure a sealed state.

This recess 32 can hold a locking tool 33 rotatably provided from the side plate 17 of the side wall forming portion of the frame 4, and when the locking tool 33 is gripped in the recess 32. At times, the lid 12 of the molding chamber 14 is brought into close contact with the frame 4 to complete the molding chamber 14.

When the solid carbon dioxide production device 1 is assembled using the frame 4 having the above-described configuration, first, the pulp 5 of the high-pressure container 2 containing liquid carbon dioxide is opened, and the liquid carbon dioxide is transferred to the insulating high-pressure supply pipe. 3 into the molding chamber 14 from the nozzle 7 at the tip, the liquid carbon dioxide is depressurized and expands adiabatically, and the snow-like solid carbon dioxide mixes with gaseous carbon dioxide and is supplied into the molding chamber 14. be done.

The mixture is stored in the molding chamber 14, and only gas flows out of the molding chamber 14 through the filter 19 and the window 18, while solid carbon dioxide gradually flows into the molding chamber 14 through the filter 19 due to the ejection pressure of the mixture. The pulp 5 is closed when it is accumulated and compression molded to obtain a product 28 of solid carbon dioxide.

To take out the solid carbon dioxide product produced in this way, push the handle lever 31 in the direction of the arrow in FIG. The door 21 and side plate 17 can now be removed freely, and the contents 28 can be removed.
can be taken out.

When supplying liquid carbon dioxide, the valve body is pressed under a predetermined set pressure by a spring in the safety valve 8 valve housing to close the bypass to the outside, but for some reason the inside of the molding chamber 14 or the insulation When the pressure increases in the high-pressure supply pipe 3 and exceeds the spring pressing force of the safety valve 8, the valve body moves to release liquid carbon dioxide to the outside, thereby preventing accidents.

FIG. 3 shows another embodiment, in which the molding chamber 14 is composed of a surrounding frame 4 and a lid 12.

In this case, the upper part of the frame 4 has a notch 22 symmetrically formed in its center, and a lever 31 is extended from the nozzle 7 provided in the center of the lid 12 to form a notch. He is trying to engage with a depression 32 disposed in a part of the portion 22.

In this case, the lid 12 that is fastened to the frame 4 can be easily opened by rotating the lever 31 toward the notch 22 and toward the corner of the frame 4.

FIG. 4 shows an improved design of the device shown in FIG. 3, in which a cover 6 is provided on the top of the device 1.

FIG. 5 shows yet another embodiment, in which the frame 4 is
A locking tool 3 extending from the top is hooked on and fixed.

As described above, the solid carbon dioxide production device 28 of the present invention is lightweight and compact, making it convenient to carry, and can produce solid carbon dioxide by simply manipulating the pulp 5 in the high-pressure container 2. Not only is it possible to remove the solid dioxide, but in the case of FIG. Carbon can be taken out, and in the case of Figures 3 to 5, this is an extremely simple device that can be done simply by reversing the device.

[Brief explanation of drawings]

FIG. 1 is a side view of a solid carbon dioxide production apparatus according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a perspective view of an apparatus according to another embodiment of the present invention, and FIG. FIG. 5 is a perspective view of an apparatus according to an embodiment, FIG. 5 is a perspective view of an apparatus according to another embodiment, and FIG. 6 is an explanatory diagram schematically showing a conventional solid carbon dioxide production apparatus. ! , equipment 2° cylinder 3, supply pipe 4° frame body 5, valve B, cover 7° nozzle 8, safety valve 12, lid 14. Molding chamber 17, side plate 16, window 19, filter 21. Door 22, cutout 23. Inflection part 28, contents 319 handle lever 32, recess
33. Applicant for the patent on the locking device: Yoshihisa Kawaguchi, Japan-Europe Trade Representative Co., Ltd. Engraving of the drawing (no changes to the content) Figure 1 Figure 2 Figure 3 Procedural amendment (method) October 22, 1985 Patent application 1986 -40611 No. 2 Name of the invention Solid carbon dioxide production device 3 Relationship to the case of the person making the amendment Patent applicant location Palais Royal, 2-17-54 Akasaka, Minato-ku, Tokyo No. 1-1002 No. 4 Date of amendment order Showa June 25, 1960 (shipment date) 5 Drawings subject to amendment 6 Contents of amendment as per attached sheet

Claims (1)

[Scope of Claims] 1) In a solid carbon dioxide production device consisting of a frame and a lid detachably attached to the frame, a locking tool and a recess are used between the lid and the frame to keep both together. 1. A solid carbon dioxide production device, characterized in that a molding chamber is configured with a fixed temperature. 2) The frame body 4 has a pair of doors 21 which are erected and expandable on the bottom plates 15 and 15 via hinges 20 and arranged oppositely, and the bottom plate 15 and the door 21 are erected and disassembled on both sides of each side. A side plate 17, a locking tool 23, and a fastening tool 24
A lid 1 which is installed in a hermetically sealed manner and is removable through the
2 to form a molding chamber 14, the top of the lid 12 is provided with a handle lever 31 provided with a recess 32, and the side plates 17, 17 are provided with a handle lever 31 via a fulcrum 34. Claim 1, characterized in that it has a molding chamber 14 which is rotatable and is provided with a locking tool 33 so that when it is held in the recess 32, the sealing is completed. Solid carbon dioxide production device 3) The solid carbon dioxide production device according to claim 1, wherein the locking tools 33 are disposed opposite to each other at a position offset from the center position of the side plate. 4) According to claim 1, the side plate 17 is configured such that it can be installed in a sealed manner through engagement grooves 16 and 22 formed on both sides of the bottom plate 15 and the door 21, respectively. The solid carbon dioxide production device described. 5) The side plate 17 is made to stand upright by engaging its lower edge with the engagement groove 16 formed on the bottom plate 15, and also stands upright via the hinge 20 and engages the engagement groove 16 formed on the inner surface of the door 21. The solid carbon dioxide production device according to claim 1, wherein the side edge of the side plate engages with the fitting groove 22. 6) A solid body according to claim 1, characterized in that a plurality of windows 18 formed on either the side plate 17 or the door 21 are formed vertically in parallel at predetermined intervals. Carbon dioxide production equipment. 7) The solid carbon dioxide production device according to claim 1, wherein the locking tool 23 attached to the upper part of the door 21 is of a snap-lock type. 8) The solid carbon dioxide production device according to claim 1, wherein the frame body 4 is made of a material having low thermal conductivity and high pressure resistance, such as wood or plastic. 9) There are a plurality of molding chambers 14, and each frame body 4 has a pair of doors 21, which are formed on the bottom plates 15 and 15 via hinges 20 and can be opened and opened, arranged to face each other, and the bottom plate 15 and the door. 21, and a lid 12 that can be installed in a hermetically sealed manner and can be removed via a side plate 17 that can be installed and disassembled on each side of the lid 21, and a lid 12 that can be installed in a hermetically sealed manner and can be removed via a locking tool 23 and a stopper 24.
In the solid carbon dioxide production device 1, which is configured by combining the molding chamber 14 with The locking tool 33 is arranged so that the sealing is completed when it is freely held in the recess 32, and a window 18 of a predetermined shape is formed on either the door 21 or the side plate 17, and the window 18 is formed in a predetermined shape. A solid carbon dioxide production device characterized in that a filter 19 of a predetermined mesh is provided on the inner surface, and a liquid carbon dioxide supply pipe 3 is installed in the lid 12 via a distribution device and connected to the high pressure container 2. 10) According to claim 9, the pressure reducing valves are opened and closed simultaneously or sequentially by operating the handle lever 31, and a plurality of solid carbon dioxides 28 are molded into the respective molding chambers 14 simultaneously or sequentially. solid carbon dioxide production equipment. 11) The solid carbon dioxide production device according to claim 9, characterized in that a number of side plates corresponding to the number of molded solid carbon dioxide 28 are provided, and the side plates are arranged adjacent to each other. . 12) Each of the side plates 17 is configured such that its lower edge engages with an engagement groove 16 formed in the bottom plate 15 and stands upright;
The door 21 pivots via a hinge 20 attached to the side edge of the bottom plate 15, and both side edges of the side plate 17 engage with engagement grooves 22 formed on the inside of the door 21 to be integrated. 10. The solid carbon dioxide production apparatus according to claim 9, wherein the solid carbon dioxide production apparatus is configured to: 13) The solid carbon dioxide production device according to claim 9, wherein the locking tool 23 attached to the upper part of the door 21 is of a snap-in type. 14) The solid carbon dioxide production device according to claim 9, wherein the frame body 4 is made of a material having low thermal conductivity and high pressure resistance, such as wood or plastic. 15) A notch and a depression are provided in the upper edge of the frame, and a lever extending from the lid is locked in the depression. The solid carbon dioxide production device according to any one of the above. 16) According to any one of claims 1 to 15, characterized in that the locking tool of the frame is stretched over the bending part provided in the lid part to make them tight. The solid carbon dioxide production device described.