JPS6036278Y2 - Auxiliary heating device for vaporizer in pain treatment equipment for rheumatism etc. - Google Patents

Description

[Detailed explanation of the invention] This invention is a vaporization system that easily vaporizes liquefied nitrogen, which is used as a gas source to rapidly cool and treat affected areas such as rheumatism using low-temperature gas containing nitrogen as the main component. The present invention relates to an auxiliary heating device for a vaporizer used in a pain treatment tool for rheumatism, etc., which easily collects and vaporizes unvaporized liquid in the container to ensure stable reflux.

Conventionally, this type of treatment uses liquefied nitrogen (boiling point -196°C), which is injected directly into the affected area in gaseous form at a temperature of around (-150°C) to maintain the area at a level that does not cause frostbite. (1) There is a cooling method, but in this case, if you are trying to extract liquid nitrogen from a liquefied nitrogen storage tank, vaporize and expand it, and obtain a stable ejection in terms of gas flow rate, you will need a vaporizer and a liquefied nitrogen storage tank. It is difficult to start treatment because it takes a long time for the vaporization state to stabilize due to uneven vaporization and expansion between the vaporizer and the accumulation of unvaporized liquid gas in the vaporizer. There are disadvantages such as delays.

This idea solves each of the above drawbacks,
Its purpose is to collect the unvaporized liquid gas in the vaporizer into an auxiliary heater and quickly vaporize it. The auxiliary heater connected to this branch passage is composed of a double tube consisting of an outer cylinder and an inner cylinder, and one side of the inner cylinder is opened to form an auxiliary heater insertion chamber. Form.

Additionally, an auxiliary electric heater is inserted inside the auxiliary heater insertion chamber.

Furthermore, a short-circuit communication pipe communicating with the mixed gas holder is connected to the tip of the outer cylinder.

Therefore, according to this invention, when unvaporized liquid gas starts to accumulate inside the vaporizer while the vaporizer is stably producing vaporized gas, it is introduced into the auxiliary heater and vaporized again. It has the characteristic of ensuring reliable treatment with a stable vaporization state.

Next, an embodiment of this invention will be described with reference to the drawings. The auxiliary carburetor 1 is connected to the distal end of the carburetor 8 through a branch passage 6.

This auxiliary warmer 1 is composed of a double pipe consisting of an outer cylinder 2 and an inner cylinder 3, and the inner cylinder 3 is a tubular body of a predetermined length with one end opened at the end of the outer cylinder 2. It has an auxiliary heater insertion chamber 4 into which an auxiliary electric heater 5 can be inserted through the opening.

The outer cylinder 2 of the auxiliary warmer 1 is equipped with a short-circuit communication pipe 7 that connects the branch pipe body 6 and directly connects the mixed gas holder 14 at its end.

Next, the vaporizer 8 is comprised of a double pipe consisting of an outer cylinder 9 and an inner cylinder 10, and the outer cylinder 9 has an oxygen container 24 and a liquefied nitrogen container 25, respectively, with a supply pipe 22. It is designed to be connected via a supply pipe 26.

That is, the supply pipe 22 of the oxygen container 24 is connected to the end of the outer cylinder 9, and the liquefied nitrogen container 25 is connected to the outer cylinder 9 in the vicinity thereof.
The connecting seat body 20 located at the lower end of the gas-liquid mixed nitrogen holder 15 connected to the supply pipe 26 is connected.

A nitrogen injection hole 21 is formed in this connecting seat body 20.

The other end of the outer cylinder 2 is connected to the mixed gas holder 14 through an upwardly directed communication pipe 13.

Next, the inner cylinder 10 of the vaporizer 8 is a tubular body of a predetermined length with one end opened at the end of the outer cylinder 9, and has a heater insertion chamber 11 into which an electric heater 12 can be inserted through the opening. It's important.

Next, the mixed gas holder 14 is formed with an injection cylinder 16 connected to an injection nozzle or the like at a predetermined position, and the end of the short-circuit communication pipe 7 is connected to a part thereof.

17 is a temperature sensor provided in the mixed gas holder 14, 18 is a constriction portion, and 19 is a pressure regulating valve, all of which are provided in a supply pipe 26 connected to a liquefied nitrogen container 25.

In a situation where normal vaporization continues, it is difficult to recognize that the auxiliary warmer 1 operates, but uneven expansion occurs in the vaporizer 8, and unvaporized liquid gas accumulates, and the liquid gas becomes auxiliary. The liquid gas is heated and refluxed when it flows into the warmer 1.

Next, to explain the overall operating state of this device, the liquefied nitrogen from the liquefied nitrogen container 25 is heated by the pressure limiting valve 19 provided in the supply pipe 26 due to its own pressure which has increased as a result of natural temperature rise.
The nitrogen gas passes through the constriction part 18 and is made into a predetermined amount by these three parties, flows into the gas-liquid mixed nitrogen holder 15 in a gas-liquid mixed state, and enters the vaporizer 8 through the nitrogen injection hole 21 of the connecting seat 20 at the lower end. enter.

Oxygen from an oxygen container 24 is fed under pressure to the vaporizer 8 at a pressure appropriately adjusted by a pressure regulator 23.

Further, the nitrogen flow rate and the oxygen flow rate are adjusted in advance so that the approximate gas composition in the mixed gas holder 14 flowing from the vaporizer 8 is nitrogen:oxygen=4:1.

The mixed gas properly mixed in this manner flows through the injection cylinder 18 from the mixed gas holder 14 and enters the treatment injection beak (
(not shown) for treatment.

At this time, when the temperature of the mixed gas falls below 1150° C., the electric heater 12 in the vaporizer 8 is automatically activated by the action of the temperature sensor 17 to raise the temperature.

In addition, when the temperature of the mixed gas drops to 1170°C or unvaporized liquid gas accumulates in the vaporizer 8, the liquid gas in that state has a low temperature but has a high specific gravity. , descends through the branch pipe body 6 and enters the auxiliary warmer 1 .

This liquid gas is warmed by the auxiliary electric heater 5 of the auxiliary warmer 1, which is constantly slightly heated.

The heated gas enters the mixed gas holder 14 from the vaporizer 8 through the short-circuit communication pipe 7 or by flowing backward through the branched pipe body 6 due to the volume relationship proportional to the temperature, and quickly fills the mixed gas holder 14. This is to raise the mixed gas temperature to an appropriate temperature.

As described above, according to this invention, when a patient is being treated for pain such as rheumatism, a normally functioning vaporizer suddenly causes various problems, such as when liquefied nitrogen is in an unvaporized liquefied gas state. If a situation arises in which gas is accumulated, it is naturally guided to the auxiliary warmer to ensure normal operation at all times, and it is easy to prevent irregularities in the expansion of the mixed gas in the vaporizer or temperature changes. It has the effect of being able to adjust the temperature appropriately, which is very convenient for treatment.

Since a downward branch passage is formed at the end of the vaporizer, the unvaporized liquid gas generated in the vaporizer naturally descends, and the heated vaporized gas also flows freely back to adjust the temperature. It has the effect of being able to quickly.

In addition, since the auxiliary heater is constructed from an outer cylinder and an inner cylinder, and one of the inner cylinders is opened to form an auxiliary heater insertion chamber, the heater can be heated quickly and is extremely strong. This has the effect that the auxiliary electric heater can be moved in and out freely, making repairs, etc. very easy.

Furthermore, a short-circuit connecting pipe that communicates with the mixed gas holder is connected to the tip of the outer cylinder, so the gas vaporized in the warmer directly enters the mixed gas holder, allowing for rapid temperature adjustment. It has an excellent effect that completes pain treatment.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a sectional view showing the device of this invention, and FIG. 2 is an enlarged sectional view of the auxiliary warmer. 1 is an auxiliary warmer, 2 is an outer cylinder, 3 is an inner cylinder, 4 is an auxiliary heater insertion chamber, 5 is an auxiliary electric heater, 6 is a branch pipe body,
7 is a short-circuit communication pipe, 8 is a vaporizer, 14 is a mixed gas holder, 15 is a gas-liquid mixed nitrogen holder, 16 is an injection cylinder, 17
2 is a temperature sensor, 20 is a connecting seat body, 24 is an oxygen container, 2
5 is a liquefied nitrogen container.

Claims (1)

[Scope of utility model registration request] In an auxiliary heating device for a vaporizer in a low-temperature gas generating device for pain treatment such as rheumatism, which connects an oxygen container and a liquefied nitrogen container to the vaporizer through supply pipes, The auxiliary heater, which has a downward branch passageway and is connected to the branch passageway, is constructed of a double tube consisting of an outer cylinder and an inner cylinder, and one side of the inner cylinder is opened to form an auxiliary heater insertion chamber. A device for treating rheumatism, etc., characterized in that an auxiliary electric heater is inserted inside the auxiliary heater insertion chamber, and a short-circuit communication pipe is connected to the tip of the outer cylinder to communicate with a mixed gas holder. Auxiliary heating device for vaporizer in pain treatment equipment.