KR200359537Y1 - gas thank for charge - Google Patents

Abstract

According to the present invention, the fillable gas cylinder includes a gas cylinder body having a space portion in which gas is filled; A cylinder member fixed to the gas cylinder body, the cylinder member having an injection nozzle insert and having a passage communicating with the injection nozzle insert; The cylinder nozzle is slidably installed in the injection nozzle insertion portion of the cylinder member, and a gas passage is formed in a longitudinal direction, and a lower portion of the cylinder seat is inserted into the valve seat and the valve seat to communicate with the gas passage. An injection nozzle having a filling gas valve having a tube for opening and closing a passage; A spring installed between the injection nozzle and the lower surface of the cylinder to elastically bias the injection nozzle upward; A packing supported by the cylinder to selectively open and close the gas discharge hole when the injection nozzle is slid; And a cap coupled to the cylinder member to support the packing and the injection nozzle.

Description

Gas thank for charge}

The present invention relates to a compact gas cylinder mounted on a portable gas burner for supplying gas, and more particularly, to an improved gas cylinder of a valve unit for charging and discharging gas.

Butane gas, which is used as a main raw material of a portable gas burner commonly used in a picnic party, a restaurant, or a home, is mounted on the burner in a state filled with a small gas cylinder, and disposed of after use. Thus discarded gas cylinders are not recycled and discarded, thus polluting the environment. In particular, there is a risk of explosion because residual gas exists inside the abandoned gas cylinder. Collecting and disposing of these gas cylinders is expensive and time-consuming, and resources are difficult to recycle.

Recently, a portable gas cylinder that can be recharged has been proposed as a solution to solve such a problem, and an example thereof is disclosed in Korean Utility Model Registration No. 20-0217646.

The disclosed rechargeable butane gas cylinder has a rechargeable gas valve attached to the upper cap of the upper portion of the gas cylinder body, which is assembled by a nozzle cover by inserting an injection nozzle fitted with an o-ring on the upper portion of the valve body, and the valve body The lower portion of the injection nozzle inserted into the nozzle cap has a configuration in which the needle cap is built in the needle valve is supported by a spring to open and close the bottom of the nozzle hole of the injection nozzle.

In the Republic of Korea Utility Model Registration No. 20-0266354, the metal valve housing is fixed to the coupling hole of the upper body formed with the mount cup, the valve member is inserted into the metal valve housing, and then the locking part is formed by pressing the lower part of the detachable part of the valve member. Have as much configuration as possible.

And the registered Utility Model No. 20-0209190 discloses a filling butane gas cylinder, the butane gas cylinder is welded to the gas cylinder body sealed by the upper and lower caps, the upper projection in the center of the upper cap protrudes outside the upper cap, An inner side of the protruding portion has an inlet tube formed with a female thread, a spring inserted into the inlet tube, a nozzle placed on an upper portion of the spring, a packing fitted to the nozzle, and a nozzle cap coupled to the inlet cap. do.

Since the gas cylinder as described above has a separate needle for intermittent injection when filling gas, the structure is relatively complicated and the unit cost for production is relatively high. In addition, the body of the gas cylinder is composed of a cylindrical member in which the pipe is cut to a predetermined length, a bottom member coupled to the lower portion of the cylindrical member, and an upper cover coupled to the upper portion of the cylindrical member and mounted with the valve unit. Such a gas cylinder has a substantially high manufacturing cost since the cylindrical member consists of a single pipe.

In order to solve such a problem, the present applicant has applied for a refillable gas cylinder in which the valve unit is improved with Korean Patent Utility Model Application No. 20-2004-004147, and has continuously researched and developed the gas cylinder and filed it. .

The present invention has been made to solve the problems described above, and an object thereof is to provide a rechargeable gas cylinder that is easy to exchange and repair in case of damage to a valve unit that enables recharging and discharging.

Another object of the present invention is to provide a rechargeable gas cylinder that can reduce the cost of the product according to the manufacture of the valve unit and increase the reliability of the operation.

1 is an exploded perspective view of the present invention is a rechargeable gas cylinder,

2 is a cross-sectional view of another fillable gas cylinder according to the present invention,

3 is an exploded perspective view showing an extract of the valve unit according to the present invention,

4 is a cross-sectional view of the valve unit and showing an operating state.

<Explanation of symbols for the main parts of the drawings>

20; Rechargeable Gas Cylinder

41; Cylinder member

43; Injection nozzle

50; Gas filling valve

54; tube

Rechargeable gas cylinder of the present invention to achieve the above object,

A gas cylinder body having a space part filled with gas therein;

A first member fixed to the gas cylinder body, a second member coupled to the first member, and an injection nozzle insert formed on the first member and the second member, and having a passage communicating with the injection nozzle insert on the second part A cylinder member;

The cylinder nozzle is slidably installed in the injection nozzle insertion portion of the cylinder member, and a gas passage is formed in a longitudinal direction, and a lower portion of the cylinder seat is inserted into the valve seat and the valve seat to communicate with the gas passage. An injection nozzle having a filling gas valve having a tube for opening and closing a passage;

A spring installed between the injection nozzle and the lower surface of the cylinder to elastically bias the injection nozzle upward;

A packing supported by the cylinder to selectively open and close the gas discharge hole when the injection nozzle is slid; And a cap coupled to the cylinder member to support the packing and the injection nozzle.

In the present invention, the second member is made of a synthetic resin material and the insert molding with the first member, the material of the second member is preferably using an atal, the tube is a silicone resin or brittle at low temperature It is made of not big rubber material

Hereinafter, a preferred embodiment of the fillable gas cylinder according to the present invention will be described in detail with reference to the accompanying drawings.

Fillable gas cylinder according to the present invention is to improve the structure of the cylinder and the cylinder of the valve unit for the filling and discharge of gas, an embodiment is shown in Figures 1 to 4.

Referring to the drawings, the fillable gas cylinder 20 is made of a stainless steel plate or iron plate and has a gas cylinder body 30 having a space 31 filled with gas therein and is installed on the upper side of the gas cylinder body 30 It extends inside and includes a valve unit 40 for charging and discharging the gas stored in the gas cylinder body (30).

As shown in FIGS. 1 and 2, the gas cylinder body 30 has a cylindrical member 33 which is cylindrically bent and welded at both ends to have a widening portion 32 having a diameter wider at both ends of the plate member. The bottom member 34 welded to the lower portion of the cylindrical member 33 and recessed inwardly, and the cover member 35 which is joined to the expansion part 32 of the upper side of the cylindrical member 33 and welded and is convex toward the upper side. It is provided. The gas cylinder is made of a stainless steel sheet, but is not limited thereto, and may be made of a plated iron plate. In addition, the shape of the gas cylinder body is not limited by the above-described embodiment may be variously modified in diameter, height, and the like.

The valve unit 40 is welded or screwed to the central portion of the cover member 35 of the gas cylinder body 30 as shown in FIG. 3, and has a structure in which the lower end is sealed in a cylindrical shape and is lowered from the upper side to the lower side. A cylinder member 41 having an injection nozzle insertion part 42, a injection nozzle 43 slidably installed in the injection nozzle insertion part 42 of the cylinder member 41, for charging and discharging gas, It is provided with a cap 44 is screwed to the cylinder member 41 to support the injection nozzle 43.

The cylinder member 41 is welded or screwed to the cover member 35, and a first member 41a made of metal, and a second member made of a synthetic resin material, the first member 41a of which is molded by insert molding. 41b is provided. At the lower end of the first member 41a, a groove 41c or a protrusion may be formed on the outer circumferential surface to increase the coupling force with the second member 41b. The material of the second member is preferably made of atal. Injection nozzle inserts 42 are formed in the first and second members 41a and 41b in the longitudinal direction, and the lower end of the injection nozzle inserts 42 is sealed and the end side of the cylinder member 41 is closed. On the outer circumferential surface is provided an extension tube 41d which is radially extended and communicates with the injection nozzle insert 42. In addition, the injection nozzle insert 42 has a structure in which a step portion 42a formed by forming a diameter of the upper side relatively larger than the diameter of the lower side is formed to support the packing described later. The structure of the cylinder member 41 is not limited thereto, and the injection nozzle inserting portion 42 may be formed, and any structure may be combined with the cover member 35. And the material of the cylinder member 41 may be made of a single metal or synthetic resin material.

The injection nozzle 43 is slidably installed in the injection nozzle insert 42 of the cylinder member 41, the injection nozzle 43 is a gas passage (43a) is formed in the longitudinal direction and the gas cylinder on the outer peripheral surface A gas discharge hole 43b communicating with the furnace 41 is formed. In addition, a gas filling valve 50 for filling gas is formed at a lower end of the injection nozzle 43. The lower side of the gas discharge hole 43b of the injection nozzle 43 is formed with a relatively large diameter to form a step 42c, and the injection nozzle 43 has an injection nozzle 43 for the cylinder member 41. The packing 45 is opened and closed to open and close the gas discharge hole 43b during the elevation. The inner circumferential surface of the packing 45 is preferably fitted to the injection nozzle 43 so as to be in close contact with the gas discharge hole 43b. The material of the packing 45 may be made of a rubber material having an elastic force.

The gas filling valve 50 formed at the lower side of the injection nozzle has a relatively large diameter at the lower end thereof, and an annular groove 51 is formed at the outer circumferential surface thereof, and a filling passage communicating with the gas passage 43a at the lower portion thereof. 52 is provided with a valve seat 53 is formed, and the tube 54 is inserted into the valve seat 53, the end is supported by the groove 51 and the filling passage 52 is blocked. The tube 54 may be made of rubber or silicone rubber having elastic force, and the tube 54 should be able to maintain elasticity according to stretching without having brittleness at low temperatures. The valve seat 53 is preferably tapered to facilitate insertion of the tube 54. Here, the gas passage 43a does not penetrate the injection nozzle 43 but is sealed at the lower side of the filling passage 53.

On the other hand, a spring 55 is installed between the lower end of the injection nozzle 43 and the bottom surface of the cylinder member 41 to elastically bias the injection nozzle 43 upward. In the valve unit as described above, the diameter of the injection nozzle insertion portion 42 formed in the cylinder member 41 is formed to be relatively larger than the maximum diameter of the injection nozzle 43 so that the gas inside the gas cylinder interposed therebetween. It is preferable to allow the gas discharge hole to flow out through.

Referring to the operation of the fillable gas cylinder 20 according to the present invention configured as described above are as follows.

In order to discharge the gas filled in the rechargeable gas cylinder 20 of the present invention configured as described above, the gas discharge hole 43b blocked by the packing 45 by pressing the injection nozzle 43 is moved downward, and the extension pipe 41d ) Is discharged to the outside through the gas discharge hole 42 and the gas passage 41 between the cylinder member 41 and the injection nozzle 43. When the discharge of the gas is completed and the pressing force for pressing the injection nozzle 43 is removed, the injection nozzle 43 is moved upward by the elastic force of the spring 55 and the gas discharge hole 43b is packed 45. By adhering to the inner circumferential surface of the c), the release of gas is blocked.

In order to fill gas into the gas cylinder, the filling gas pressure is applied to the gas passage 43a and the filling passage 52 of the injection nozzle 43 from a separate filling device (not shown). Gas is filled into the inside of the gas cylinder while inflating the tube 54 surrounding the valve seat 53 of the filling valve 50. Then, when the filling pressure is removed from the filling device, the tube 54 blocks the filling passage 52 by the elastic force of the tube 54.

The fillable gas cylinder 20 operated as described above separates the cap 44 from the cylinder member 41 when the packing 45 or the tube 54 is damaged due to repeated use, and the injection nozzle 43 ) And then replace the packing (45) or tube (54) attached thereto. In repairing the valve unit as described above, since the packing and the tube is made of rubber or synthetic resin material, the cost of maintenance can be reduced.

On the other hand, since the cylinder member 41 is made of a metal, the first member 41a coupled to the cover member 35 and the second member 41b coupled to the first member and made of a synthetic resin material, so the cost of manufacturing It can reduce the weight and lighten the filling gas cylinder. As shown in FIG. 1, the cylindrical member of the main body 41 of the gas cylinder is formed with an extension portion 32 to which the bottom member 34 and the cover member 35 are coupled by bending both ends of the stained steel sheet. Since it has a structure, it is possible to reduce the manufacturing cost compared to manufacturing the gas cylinder body by cutting the cylindrical pipe as in the prior art.

As described above, the fillable gas cylinder according to the present invention has a structure in which the cylinder member of the valve unit is manufactured by molding a synthetic resin on metal, thereby making it lighter and inserting a tube into the valve seat for filling to open and close by filling pressure. As a result, the production cost can be reduced due to the manufacture of the gas cylinder, and the valve can be easily repaired and repaired.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the attached claims.

Claims (5)

A gas cylinder body having a space part filled with gas therein; A cylinder member fixed to the gas cylinder body, the cylinder member having an injection nozzle insert and a passage communicating with the injection nozzle insert; The cylinder nozzle is slidably installed in the injection nozzle insertion portion of the cylinder member, and a gas passage is formed in a longitudinal direction, and a lower portion of the cylinder seat is inserted into the valve seat and the valve seat to communicate with the gas passage. An injection nozzle having a filling gas valve having a tube for opening and closing a passage; A spring installed between the injection nozzle and the lower surface of the cylinder to elastically bias the injection nozzle upward; A packing supported by the cylinder to selectively open and close the gas discharge hole when the injection nozzle is slid; And a cap coupled to the cylinder member to support the packing and the injection nozzle. The method of claim 1, The cylinder member has a first member fixed to the gas cylinder body, a second member coupled to the first member, and an injection nozzle insert formed on the first member and the second member to communicate with the injection nozzle insert on the second part. A fillable gas cylinder having a passageway. The method of claim 2, The second member is made of a synthetic resin material, the first member is formed with a projection or groove for increasing the coupling force with the second member and extending in the radial direction, the first of the edge of the passage communicating with the injection nozzle insert Fillable gas cylinder, characterized in that the extension tube is formed extending from the two members. The method of claim 1, The gas cylinder body is coupled to a cylindrical member in which a steel sheet is bent and welded, a cylindrical member having both ends formed with an extension, a bottom member coupled to an extension formed at a lower portion of the cylindrical member, and an extension positioned at an upper side of the cylindrical member. Fillable gas cylinder, characterized in that it comprises a cover member coupled to the cylinder member. The method of claim 2, Fillable gas cylinder, characterized in that the second member is made of an atal.