JPS6026892A - Liquefied gas evaporator - Google Patents

Abstract

PURPOSE:To permit only a gas to be supplied to a gas flow restriction member and maintain a quantity of permeation of the gas through the gas flow restriction member at a constant level, by supplying the gas through a venting member formed with a vent hole having a length greater than a diameter in a liquefied gas storing vessel. CONSTITUTION:A venting member 20 is provided under a gas flow restriction member 17 in a cylindrical spout 14 of a vessel 13. The venting member 20 is formed with a vent hole 21 having a sufficient length greater than the diameter. With this arrangement, a gas is permitted to pass through the gas flow restriction member 17 by the pressure in the vessel 13 to be supplied. Even if the vessel 13 is inclined to bring a surface of a liquefied gas 23 into contact with the venting member 20, there is no possibility of the liquefied gas 23 entering the vent hole 21 because the vent hole 21 of the venting member 20 has the sufficient length greater than the diameter and an evaporated gas 22 exists in the vent hole 21. Accordingly, the gas flow restriction member 17 is always supplied with the gas in gaseous phase, and a quantity of evaporation may be maintained at a substantially constant level.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to equipment that uses liquefied gas as fuel, particularly to a device for vaporizing liquefied gas for borrowed equipment.

Conventional Structures and Problems Portable hair curlers generally use liquefied gas as a heat source, and after vaporizing the liquefied gas, the required parts are heated, for example, by catalytic combustion.

As shown in FIG. 1, the liquefied gas vaporization device has a gas flow rate limiting member 5 installed by a holding tube 4 in the mouth tube 3 of a container 2 storing liquefied gas 1, and an end portion of the gas flow rate limiting member 5. The other end of the liquid guide 6 provided so as to be in contact with the liquefied gas 1 is immersed in the liquefied gas 1. The gas flow rate restricting member 5 is made of a porous sintered body, and the liquid guiding member 6 is made of a porous material and is made of a collection of thin tubes. A valve hole 7 is formed at the top of the holding cylinder 4, a nozzle 8 is slidably provided in the mouth tube 3, a valve body 9 corresponding to the valve hole 7 is provided at the bottom of the nozzle 8, and the nozzle The valve hole 7 is opened and closed by sliding the valve 8. Note that 1° in the figure indicates a nozzle hole, 11 indicates a sealing member provided on the outer periphery of the nozzle 8, and 12 indicates vaporized gas within the container 2.

The liquefied gas vaporization device having the above structure sucks up the liquefied gas 1 with the liquid guide 6 and supplies it to the gas flow rate restriction member 5, and the gas vaporized here is ejected from the nozzle 8 through the valve hole. ing.

The mechanism of vaporization is that the liquefied gas given to the liquid guide 6 and the gas flow rate restricting member 6 is reduced in pressure from the high pressure inside the container 2 to the outside atmospheric pressure, and is vaporized by heat given from the surroundings. do.

By the way, the amount of gas permeation through the gas flow rate restricting member 5 differs greatly depending on whether the state of the gas in contact with the gas flow rate restricting member 5 is in a liquid phase or in a gas phase. Therefore, in order to always obtain a stable amount of gas permeation, the state of the gas in contact with the gas flow rate restricting member 5 must be in either the liquid phase or the gas phase. Conventionally, the liquid phase was supplied by the liquid guide member 6, but the liquid guide member 6 had to be placed so that it was always in contact with the liquefied gas, and it was also necessary to There was a problem that the amount of vaporization changed.

OBJECTS OF THE INVENTION The present invention takes into consideration the above-mentioned conventional problems and aims to provide a vaporizer that does not require a liquid guide member and has a stable vaporization amount.

Structure of the Invention In order to achieve the above object, the present invention supplies gas to the gas flow rate restricting member in the discharge section of a container storing liquefied gas through a ventilation member having a vent hole that is longer than its diameter. The structure of the liquefied gas vaporizer is such that only gas is always supplied to the gas flow rate restricting member, and the amount of permeation thereof is stabilized.

Description of examples An embodiment of the present invention will be described below with reference to FIG.

In the figure, 13 is a container, 14 is a mouthpiece, 15 is a holding cylinder, 1
6 is a valve hole formed at the top of the holding cylinder 15, 17 is a gas flow rate restriction member provided inside the holding cylinder 15, 18 is a nozzle,
Reference numeral 19 denotes a valve body provided at the lower part of the nozzle 18, which is constructed in the same manner as that shown in FIG. 1 above.

The feature of this embodiment is that the gas supply means to the gas flow rate limiting member 17 does not use a reed, that is, a liquid guide member is used, and a ventilation member 20 is provided within the mouth tube 14 and at the bottom of the gas flow rate limiting member 17. The ventilation member 20 has a ventilation hole 21 that is sufficiently long in relation to its diameter.

In the configuration of this embodiment, the vaporized gas 22 in the container 13 enters the vent hole 21 of the ventilation member 2o, that is, the gas in the gas phase comes into contact with the gas flow rate restricting member 17, and the gas flows into the container. The gas is supplied through the gas flow rate restriction member 17 at the pressure within the gas flow rate restriction member 17 . Even if the container 13 is tilted and the surface of the liquefied gas 23 touches the ventilation member 2o, the ventilation hole 21 of the ventilation member 20 is sufficiently long relative to its diameter, and the vaporized gas 22 inside the ventilation hole 21 is , the liquefied gas 23 does not enter the vent hole 21. Container 1 as shown
3 is in an upright position, and even when it is upside down, it is extremely rare for the vent holes 21 of the vent member 20 to be filled to the depths with liquefied gas. Therefore, the gas in the gas phase is always supplied to the gas flow rate limiting member 17, and the amount of vaporization from the gas flow rate limiting member 17 can be kept substantially constant.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, gas in the gas phase is always supplied to the gas flow rate restricting member to maintain a stable amount of vaporization, and the structure is simple because no liquid guiding member is used. Furthermore, even if the container is tilted or turned upside down, the liquid phase gas does not come into contact with the gas flow rate restricting member, which is effective for portable devices that use liquefied gas as fuel.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional liquefied gas vaporization device, and FIG. 2 is a sectional view of a liquefied gas vaporization device according to an embodiment of the present invention. 13... Container, 17... Gas flow rate control member, 2°... Ventilation member, 21... Ventilation hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] A member for restricting gas flow rate is provided at the mouth of a container storing liquefied gas that discharges gas to the outside, and gas is supplied to the gas flow rate restricting member through a ventilation member having a vent hole that is longer than its diameter. A liquefied gas vaporization device configured to: