JPH0443716Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(1) Industrial Application Field The filter for a gas lighter of the present invention relates to an improvement of the filter in a flame-adjustable gas lighter that uses liquefied gas as fuel. (2) Conventional technology Conventionally, foamed urethane foam, felt, etc. have been used for filter members of flame-adjustable gas lighters.
By compressing the fuel passage in the vertical direction, the resistance value of the filter member is increased or decreased to adjust the amount of liquefied gas passing through, that is, the size of the flame, and the heat of vaporization to the liquefied gas is easily transferred to the members surrounding the filter. The liquefied gas is configured to use a thermally conductive member to promote vaporization of the liquefied gas when passing through the filter member. Further, in order to enable the user to adjust the flame, an operating piece for adjusting the flame is provided near the nozzle mechanism, and the movable range of the operating piece is limited within a certain range in order to eliminate large changes in the flame. . (3) Problems to be solved by the invention Conventionally, foamed urethane foam, felt, etc. used for filter members of flame-adjustable gas lighters have a large area per hole or space through which liquefied gas passes. Even if the change in the compression of the component is small, the flame changes greatly, making it difficult to set the flame to the desired flame.When the flame adjustment operation piece is set to the desired flame in the center of the movable range during manufacturing, The difference in flame between the upper and lower limits of the movable range of the operating piece was large, sometimes resulting in dangerous flames or inability to ignite. In addition, regarding the stability of the flame, the area of each hole or space in the filter member is large and lacks uniformity, and the filter member itself does not have the ability to absorb vaporized gas, so the amount of vaporized gas accumulated is low. It is difficult for the liquefied gas that has entered the liquefied gas to absorb heat of vaporization from the surrounding heat conductive members, and it is difficult to form a stable flame at low temperatures, ignition for a long time, and a large flame, that is, when a large amount of gas is released. (4) Means for solving the problem The present invention was made to solve the above problems. It has a structure in which polyester urethane foam layers are laminated by heat-melting adhesive by heat pressing, and preferably the polyester urethane foam layer impregnated with activated carbon is placed on the downstream side in the gas passage direction, and the polyester urethane foam layer is placed on the upstream side in the direction of the gas passage. Or,
Alternatively, the intermediate layer is a polyester urethane foam layer or a nonwoven fabric made of polyester fibers, and the polyester urethane foam layer impregnated with activated carbon is layered so that it is disposed on the downstream side or on both sides of the upstream side and the downstream side. (5) Function In the gas lighter filter of the present invention, the liquefied gas supplied by the suction wick enters the filter member of the present invention, passes through the intermediate layer, and passes through the polyester urethane foam layer impregnated with activated carbon on the downstream side in the passage direction. In the process where the liquefied gas passes through the polyester urethane foam layer impregnated with porous activated carbon, it absorbs the heat of vaporization from the thermally conductive member in contact with the urethane foam layer and becomes a completely vaporized gas. In addition, in parallel, the fully vaporized gas is absorbed and accumulated in the polyester urethane foam layer impregnated with activated carbon, and at the time of ignition, only the completely vaporized gas is released from the nozzle tip, forming a stable flame. In addition, by rotating a flame adjustment operation piece provided near the nozzle mechanism, the nozzle mechanism compresses or relaxes the filter member, reduces or expands the hole or space in the filter member, and controls the amount of liquefied gas passing through. Get the desired flame. In this case, the area of each pore or space in the polyester urethane foam layer impregnated with activated carbon is smaller than that of the conventional foamed urethane foam layer, so even if the flame adjustment operation piece is rotated by the same amount, the flame will not increase. There are no major changes. (6) Embodiment An embodiment of the present invention will be explained based on FIGS. 1 and 2. First, FIG. In a flame-adjustable gas lighter comprising a mechanism 2 and an ignition device 3, the filter member 5 is housed in an integral part of a stator 6 and a suction wick 7 and the lower part of the nozzle mechanism 2 so as to be compressed in the vertical direction of the gas passage. are doing. At this time, the structure of the filter member 5 is such that the gas is A polyester urethane foam layer 5a with activated carbon attached on the downstream side of the passage, and a conventional expanded urethane foam layer 5c bonded by heat melting on the upstream side of the gas passage. The countless uniform and fine pores or spaces of the liquefied gas have the function of facilitating the transfer of vaporization heat from the surrounding thermally conductive members to the liquefied gas when the liquefied gas passes through them. The urethane foam layer 5a also has the characteristic of being able to absorb vaporized gas and accumulate it. In addition, in order to adjust the size of the flame, an operating piece 4 is provided near the nozzle mechanism 2 so as to interlock with the nozzle mechanism 2, and the compression of the filter member 5 is adjusted by screwing in or relaxing the nozzle mechanism 2 to liquefy the flame. It is configured to control the amount of gas passing through. Next, FIG. 2 shows a second embodiment of the present invention,
In the flame-adjustable gas lighter having the same configuration as the first embodiment, the filter member 5' is made of polyester urethane foam layers 5'a with activated carbon attached on the upstream and downstream sides in the gas passage direction with an intermediate layer 5'b in between. ，
It is formed by hot-melting bonding of 5'c,
This is intended to improve productivity by eliminating the front and back sides of the filter member 5'. (7) Effects of the invention Looking at the results in Table 1, which were investigated using the gas lighter filter of the invention in the second embodiment described in the previous section, it is found that the flame intensity when the flame adjustment operation piece is ignited at the upper and lower limits of its movable range, respectively. The difference in size is as small as 58mm on average, so even if you shift the pitch of the flame adjustment knob by one point during production, the flame will not change significantly, making it easy to set the flame. Also, from the user's perspective, Table 1 shows that even if the flame adjustment knob is set to the maximum, the flame will not be larger than 85 mm, and conversely, even if the flame adjustment knob is set to the minimum, the flame will not be larger than 0 mm.
In other words, it does not become impossible to ignite. Furthermore, by using polyester-based urethane foam impregnated with activated carbon, the heat of vaporization can be easily transferred from the filter peripheral members to the liquefied gas, and since vaporized gas can be accumulated in the polyester-based urethane foam layer impregnated with activated carbon, it is possible to prevent flames. It becomes possible to form a stable flame that does not waver. (From Table 2) Therefore, if the filter of the present invention is used in a gas lighter, production efficiency will be improved, and safety will be ensured to prevent accidents such as burns to the user, and ignition will be achieved regardless of the position of the flame adjustment control piece. At the same time, it has become easy to use by providing a stable flame, making it a great contribution to the lives of the people.

[Table] Table 1 shows the difference in flame between the upper and lower limits of the movable range of the flame adjustment operation piece in gas lighters using the filter of the present invention and conventional filters at room temperature. The operation piece was positioned at the center of its movable range, the flame at that time was set to 30 mm, and a comparative investigation was conducted using 50 samples each.

[Table] Table 2 shows the flame stability (flame oscillation) in gas lighters using the filter of the present invention and conventional filters at room temperature. Set it to 70mm 5
The ignition state was maintained for several seconds, and the degree of flame fluctuation was compared using 50 samples each.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a first embodiment of a gas lighter filter according to the present invention, and FIG. 2 is a partial side sectional view showing a second embodiment. In the figure, 1 is a main container, 2 is a nozzle mechanism, 3 is an ignition device, 4 is a flame adjustment operation piece, 5 is a filter member, 6 is a stator, and 7 is a suction wick.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A flame-adjustable gas lighter comprising a main container containing liquefied gas and a nozzle mechanism and an ignition device, in which the gas pressure and flow rate adjusting member is a polyester-based urethane foam layer or a polyester-based gas lighter. A filter for a gas lighter, characterized in that a non-woven fabric layer made of fibers and a polyester urethane foam layer impregnated with activated carbon are laminated by heat-melting adhesive using a heat press. (2) A utility model registration claim characterized in that the polyester urethane foam layer impregnated with activated carbon is on the downstream side in the direction of the gas passage, and the polyester urethane foam layer is on the upstream side in the direction of the gas passage. A filter for a gas lighter as described in Scope 1. (3) The intermediate layer is a polyester urethane foam layer or a nonwoven fabric layer made of polyester fibers, with the polyester urethane foam layer impregnated with activated carbon on the downstream side of the gas passage, and the polyester urethane foam layer on the upstream side of the gas passage.
The filter for a gas lighter according to claim 1, characterized in that it is structured in layers. (4) The intermediate layer is a polyester-based urethane foam layer or a non-woven fabric layer made of polyester-based fibers, and the polyester-based urethane foam layer impregnated with activated carbon is configured in three layers on the upstream side and the downstream side in the gas passage direction. A gas lighter filter according to claim 1 of the utility model registration claim.