JP2935056B2 - Liquefied gas cylinder for fuel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a liquefied gas cylinder for fuel suitable for storing liquefied gas used as a fuel such as a blow torch.

<Conventional Technology> There have been known various types of liquefied gas cylinders for fuels, for example, Japanese Utility Model Publication No. 39-14365 or Japanese Utility Model Publication No.
For example, a method is known in which a liquid-containing material or a filler is filled in a cylinder and a liquefied gas is held by them.

In these conventional examples, the liquefied gas is held in the liquid-containing material or the filler to prevent the raw gas from being ejected due to the vibration or inversion of the cylinder. A space in which no liquid-containing material or filler is present is provided in a portion adjacent to the jet nozzle, and a liquefied gas held in the liquid-containing material or the like is vaporized in the space.

<Problems to be solved by the invention> For example, by holding liquefied gas in the bubble portion, such as a liquid-containing material containing fine bubbles made of various foamable synthetic resins, to prevent raw gas discharge from the liquefied gas ejection nozzle The idea of
It is basically considered correct.

However, when a liquefied gas cylinder is used as the fuel for the blow torch, the cylinder is not always used in a certain direction during the operation.If the ejection nozzle is correctly positioned above the cylinder, The position relationship between the liquid-containing material and the like inside the cylinder and the ejection nozzle may be various states, for example, when it is positioned on the side or below.

For example, as the clearest example, considering a case where a liquefied gas cylinder is used in an inverted state, in the conventional model, the liquefied gas held in the liquid-containing material falls by its own weight, and is placed in a space close to the ejection nozzle. It is unavoidable that the gas accumulates and, as a result, the raw gas is discharged from the ejection nozzle to make the flame unstable.

Such a discharge of raw gas is not limited to the case where the liquefied gas cylinder is used in an inverted state, and the same result occurs when the liquefied gas cylinder is used in a rollover state.

In order to solve such problems, various studies have been made to prevent the discharge of raw gas and to promote the vaporization of liquefied gas. The liquefied gas cylinder requires a simple and inexpensive mechanism unlike an industrial apparatus that handles a large amount of liquefied gas, and no effective solution has been obtained up to the present.

The conventionally used liquid-containing material is an elastic body having bubbles made of a synthetic resin, or a powder made of a synthetic resin. It is used for the purpose of preventing the flow of natural gas and the inflow to the jet nozzle, and the ability to prevent raw gas discharge differs depending on how these synthetic resins have bubbles inside. In this case, the liquefied gas held by the liquid-containing material is unavoidable to flow down gradually inside the liquefied gas cylinder due to its own weight. Therefore, it is necessary to increase the density of the liquid-containing material so that the liquid-containing ability of the liquid-containing material must be reduced.

The present invention provides a liquefied gas cylinder capable of always supplying a vaporized liquefied gas to an ejection nozzle regardless of the use state of the cylinder, and a liquefied gas cylinder using a liquid-containing material having a greater holding power. The purpose is to supply.

<Means for Solving the Problems> In the present invention, it is required that the internal pressure of the liquefied gas cylinder is all equal pressure irrespective of the position in the cylinder, and that the liquefied gas has a property of falling by its own weight. In consideration of this, while extending the inner end of the ejection nozzle inserted inside the cylinder, a vaporizing chamber surrounding it is installed, and the opening end of the ejection nozzle is opened from the liquefied gas held in the liquid-containing material inside the cylinder. Isolation was performed so that liquefied gas flowing into the vaporization chamber from the inside of the cylinder was not directly sucked into the ejection nozzle, and the liquefied gas flowing into the vaporization chamber was temporarily stored in the inner bottom of the vaporization chamber.

Therefore, when the instrument is used in the upright position with the ejection nozzle positioned above the cylinder, the liquefied gas is temporarily stored in the inner bottom of the vaporization chamber, and the vaporized portion is ejected from the ejection nozzle to the outside. When the cylinder is used in the inverted position, the liquefied gas is temporarily stored around the extended ejection nozzle in the vaporization chamber, and only the vaporized portion is ejected from the ejection nozzle to the outside.

Further, the vaporization chamber is not necessarily limited to a bottomed one, and the bottom may be opened, and the opening may be closed with a liquid-containing material to obtain a space for vaporizing the liquefied gas.

Furthermore, in the case of using an elastic body made of synthetic resin having air bubbles, or a powder thereof as a liquid-containing material, in consideration of the choice of materials, their liquefied gas holding power is limited, In search of materials with higher retention, they found that natural or wood fibers excel. In particular, the inventors have found that so-called "waste paper" made of deinked and crushed ultra-short fibers used as a raw material for Chile paper or machine oil fences has excellent ability as a liquid-containing material.

By using "waste paper" as the liquid-containing material, the production cost can be reduced, and the amount of liquefied gas retained can be increased. Liquefied gas can be charged by 30% by weight.

When “waste paper” is used as the liquid-containing material, the liquefied gas held by the liquid-containing material has a high ability to hold “waste paper”, so that the speed at which the liquefied gas descends due to its own weight becomes extremely slow.
The reason is that the space inside the natural fiber of the waste paper is much smaller than the space for retaining the liquefied gas of the foamed synthetic resin, so the liquefied gas once entering that space is more This is because the paper is stably held inside the “waste paper”.

Therefore, when "waste paper" is used as a liquid-containing material,
As much liquefied gas as the amount used is vaporized,
In a normal use state, it is unlikely that the raw gas flowing out of the liquid-containing material is discharged from the ejection nozzle as it is.

<Operation> According to the present invention, the liquefied gas held in a large amount by the liquid-containing material is greatly suppressed from flowing out from the liquid-containing material,
If necessary, it is temporarily stored in the vaporization chamber before reaching the inner end of the ejection nozzle, and is ejected to the outside from the ejection nozzle in a state of being completely vaporized in the evaporation chamber.

<Example of the present invention> An example of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a main portion of a small liquefied gas burner having the first embodiment, and FIGS. 2 and 3 show an enlarged sectional view of the relationship between the ejection nozzle and the vaporizing chamber. .

In these drawings, 1 is a mounting head provided with a burner 2 and a valve device 3, 4 is an extended ejection nozzle mounted on a liquefied gas cylinder 5, 6 is a liquid-containing material holding a liquefied gas 7. is there. The jet nozzle 4 is a liquefied gas cylinder 5
A suitable volve device (not shown) is provided so as to open when pressed toward the inside of the device.

Reference numeral 8 denotes an airtight vaporization chamber surrounding the extended ejection nozzle 4 inside the liquefied gas cylinder 5, and reference numeral 9 denotes a liquid passage hole formed in a partition wall of the vaporization chamber 8.

In order to prevent the liquefied gas 7 flowing into the vaporizing chamber 8 from flowing through the liquid passage hole 9 from directly flowing into the ejection nozzle 4, the liquid passage hole 9 is provided at a portion closest to the outside of the ejection nozzle 4 (the ejection nozzle in FIG. 2). (Upper part 4).

The positional relationship between the ejection nozzle 4, the vaporizing chamber 8 and the liquefied gas 7 when the apparatus is used in the upright position is as shown in FIG. 2, where the pressure inside the liquefied gas cylinder 5 which is equal pressure is balanced. The liquefied gas 7 stays in the inner bottom of the vaporization chamber 8. Other portions inside the vaporization chamber 8 are filled with vaporized gas.

When the vaporized gas is burned using the burner 3, the pressure in the vaporization chamber 8 is reduced and the liquefied gas
Is vaporized and continuously supplied to the burner 2 to perform combustion.

FIG. 3 shows the positional relationship when the appliance is used in the inverted position. The liquefied gas 7 stays around the ejection nozzle 4 in the vaporization chamber 8 and the ejection nozzle 4 shown in FIG.
It is vaporized in the space above and supplied to the burner 2.

<Second embodiment of the present invention> In order to prevent the discharge of raw gas, the liquefied gas 7 is vaporized using an appropriate space and supplied to the burner 2 as in the above embodiment. Is most desirable. Also, regardless of the situation, by preventing the liquefied gas 7 from being directly sucked into the ejection nozzle 4, unexpected raw gas discharge can be prevented.

In consideration of these points, in the second embodiment, the bottom of the vaporization chamber 8 which was the bottomed cylinder in the first embodiment was removed, and FIGS. As shown in FIG. 5, a type in which the bottom of the vaporization chamber 8 is opened and the opening is closed by the liquid-containing material 6 is employed.

The relationship between the jet nozzle 4 and the liquefied gas 7 during use is exactly the same as that of the first embodiment, but as shown in FIG. 4, when used in the upright state, stays at the bottom of the vaporization chamber 8. The raw gas 7 is sucked into the liquid-containing material 6, the liquid level drops, and the raw gas 7 is located at a position lower than that in the example shown in FIG.

<Third Embodiment of the Present Invention> In the embodiment shown in cross section in FIG. 6, attention is paid to the fact that the flow of liquefied gas is significantly suppressed by using "waste paper" as the liquid-containing material. The liquefied gas cylinder is provided with a space portion 12 that is not filled with the liquid-containing material,
A liquid material 6 is filled between the nozzle 12 and the ejection nozzle 4 to store a large amount of liquefied gas in the liquefied gas cylinder 5 having a fixed capacity. Spacer 13 is arranged inside.

<Effects of the Present Invention> According to the present invention, by adopting “waste paper” as the liquid-containing material 6, a larger amount of the liquefied gas 7 can be stored, and the lowering speed of the liquefied gas 7 can be suppressed, thereby reducing the raw gas The liquefied gas 7 can be reliably vaporized by preventing discharge and performing simple processing for installing the vaporization chamber 8 as necessary. Even when used at any position from the standing state to the inverted state, the discharge of the positive gas can be completely prevented.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a simplified burner using a liquefied gas cylinder to which the present invention is applied, FIG. 2 is a sectional view of an essential part in an upright position of the first embodiment, and FIG.
FIG. 4 is a sectional view of an essential part in an upright position of the second embodiment, FIG. 5 is a drawing similar to FIG. 4 in an inverted position, and FIG. It is sectional drawing. 1 ... head, 2 ... burner, 3 ... valve device, 4
... ejection nozzle, 5 ... liquefied gas cylinder, 6 ... liquid-containing material, 7 ... liquefied gas, 8 ... first vaporization chamber, 9 ... liquid passage hole, 12 ... space portion, 13 ... spacer .

Claims (1)

(57) [Claims] 1. A liquefied gas cylinder for fuel having an ejection nozzle and filled with a liquid-containing material, wherein waste paper is used as the liquid-containing material, and liquid is contained in a portion of the liquefied gas cylinder farthest from a portion where the ejection nozzle is installed. A space portion not filled with the material is provided, the injection nozzle facing the liquid-containing material is extended into the liquid-containing material, and the injection nozzle is surrounded by a hollow tube longer than the injection nozzle. A liquefied gas cylinder for fuel, the parts of which are communicated.