JPS6026889A - Liquefied gas evaporator - Google Patents

Abstract

PURPOSE:To maintain a quantity of evaporation at a constant level without necessity of a liquid guide portion, by providing a semipermeable membrane in a liquefied gas evaporator. CONSTITUTION:A semipermeable membrane 20 permitting only a gas to permeate therethrough is provided at a lower portion of a retaining cylinder 15, and a space 21 is provided below a gas flow restriction member 17. With this arrangement, the gas flow restriction member 17 is supplied with only the gas permeating through the semipermeable membrane 20 and entering the space 21. Even when a vessel 13 is inclined to bring a surface of a liquefied gas into contact with the semipermeable membrane 20, there is no possiblity of the liquefied gas entering the space 21 and coming into contact with the gas flow restriction member 17. Further, even if the vessel 13 is allowed to stand upside down and naturally when it stands upright, the gas flow restriction member 17 is always supplied with the gas in gaseous phase, and accordingly, a quantity of evaporation from the gas flow restriction member 17 may be maintained at a substantially constant level.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to devices using liquefied gas as fuel, particularly devices for vaporizing liquefied gas in devices for ligamentous use.

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

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 guide 6 is made of a porous material or an aggregate 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. In the figure, 10 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 limiting member 5, and the gas vaporized here passes through the valve hole 7 and is ejected from the nozzle 8. It has become.

The mechanism of vaporization is that the liquefied gas given to the liquid guiding member 6 and the gas flow rate restricting member 5 is depressurized from the high pressure inside the container 2 to the atmosphere outside, and is vaporized by heat given from the surroundings. do.

Incidentally, in the gas flow rate restriction member 5, the amount of gas permeation through the gas flow rate restriction member 5 is greatly different depending on whether the state of the gas in contact with the gas flow rate restriction 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 in constant contact with the liquefied gas, and there was still no contact with the gas flow rate restricting member. There was also a problem that the amount of vaporization changed depending on the temperature.

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 provides a semi-permeable membrane so as to form a space in a gas flow rate restricting member in a discharge section of a container for storing liquefied gas, and allows gas to flow through the semi-permeable membrane. The liquefied gas vaporization device is configured 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 part provided in 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 lies in the gas supply means to the gas flow rate restricting member 17, that is, a semipermeable membrane 20 that only allows gas to pass through is provided at the lower part of the holding cylinder 15 without using a liquid guiding member. A space 2 is provided at the bottom of the gas flow rate control housing member 17.
1 is formed.

In the configuration of this embodiment, only the gas that has passed through the semipermeable membrane 20 and entered the space 21 is supplied to the gas flow rate restricting member 17 . Even if the container 13 is tilted and the surface of the liquefied gas 22 touches the semipermeable membrane 20, the liquefied gas 22 will not enter the space 21 and will not come into contact with the broken gas flow rate restricting member 17. As shown in the figure, the gas flow rate restricting member 1
7 is always supplied with gas in a gas phase, and the amount of vaporization from the gas flow rate restricting member 1 can be kept almost 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 no liquid guiding member is used. Even if the container is tilted or turned upside down, the liquid phase gas will not come into contact with the gas flow rate restricting member, so it is effective for portable equipment that uses liquefied gas as fuel.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional liquefied gas vaporization apparatus, and FIG. 2 is a sectional view of a liquefied gas vaporization apparatus according to an embodiment of the present invention. 13... Container, 17... Gas flow rate limiting member, 20... Semipermeable membrane. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 1θ Figure 2

Claims (1)

[Claims] A member for restricting gas flow rate is provided at the mouth of a container for storing liquefied gas that releases gas to the outside, a semipermeable membrane is provided so as to form a space with respect to the gas flow rate restriction member, and the semipermeable membrane is A liquefied gas vaporization device configured to supply gas through the liquefied gas.