KR101173253B1 - Valve Having Double Safety Structure in Small LPG Container - Google Patents

Abstract

The present invention has a double safety structure for preventing gas leakage, and relates to a double safety valve of a small LPG container to ensure the flow of gas to ensure a wide flow path when filling and using the gas.
The present invention is the valve body is coupled to the LPG container in communication; An adapter communicatively coupled to the valve body to detachably couple the charging coupler of the gas supply source; A first check valve elastically installed in the valve body; And a second check valve resiliently installed in the adapter, wherein the second check valve opens the inside of the adapter in conjunction with the operation of coupling the charging coupler to the adapter, and the first check valve includes the first check valve. By opening the inside of the valve body in conjunction with the operation of the two check valve, it is characterized in that the gas flows into or out of the container.

Description

Valve Having Double Safety Structure in Small LPG Container

The present invention relates to a double safety valve of a small LPG container, in particular, has a double safety structure to prevent gas leakage, and double safety of a small LPG container to ensure the flow of gas smoothly by securing a wide flow path when using the filling and gas It is about a valve.

Large-capacity LPG containers for home use can be filled and used through "LPG container suppliers". Overseas, small LPG gas (butane gas / propane gas) containers are used. Since they are small, they are easily transported and used in nearby marts.

In Korea, similar to overseas, a system will be introduced that allows consumers to take LPG containers directly to retail stores such as hypermarkets to fill gas or purchase gas-filled containers, without ordering LPG delivery over the phone. It is a prospect.

Consumers can purchase LPG, which is relatively expensive compared to other fuels, so that they can use LPG at a lower cost by reducing logistics costs and create new demand for outdoor and leisure products as well as conventional cooking and heating. The gas diffusion policy is expected to be a turning point for expanding the LPG industry's survival.

Therefore, since the valve having a chargeable structure to be employed in such a small LPG container is directly handled by the general consumer, unlike a valve of a large-capacity chargeable butane gas container, which is currently available, a more thorough prevention of safety accidents such as gas leakage occurs. There is a need to adopt a safety structure.

In particular, the well-known LPG valve for butane gas is provided with a single check valve, so when a user or the like abnormally uses the valve, for example, when picking a valve with a skewer, safety due to gas leakage may be a problem. .

In general, one-touch valve fastening structure is not adopted for valves applied to large-capacity containers for home use.However, one-touch method for allowing gas container valve fastening for LPG containers of less than 5kg is being considered. .

Moreover, the valve of the small LPG container is designed differently from the valve applied to the large capacity container for home use, so it is not necessary to use the filling gun applied to the valve of the small LPG container without using the filling gun applied to the valve of the large capacity container. It is preferable to be able to avoid.

In addition, securing sufficient gas flow paths for the smooth flow of gas as well as safety devices may be an important structural requirement for the valve of a small LPG container.

The present invention has been made in view of the above-mentioned problems, and its object is to have a double safety structure using two check valves to prevent gas leakage due to user's carelessness or abnormal use, and to provide a wide flow path when filling and using gas. It is to provide a double safety valve of a small LPG container that can ensure the flow of gas smoothly.

It is another object of the present invention to provide a double safety valve for a small LPG container in which the coupling of the valve and the filling coupler of the LPG gas container is made in a one-touch manner that is easy for the consumer to operate.

The present invention to achieve the above object, the valve body is in communication with the LPG container coupled; An adapter communicatively coupled to the valve body to detachably couple the charging coupler of the gas supply source; A first check valve elastically installed in the valve body; And a second check valve resiliently installed in the adapter, wherein the second check valve opens the inside of the adapter in conjunction with the operation of coupling the charging coupler to the adapter, and the first check valve includes the first check valve. 2 provides a valve of a small LPG container, in which gas is introduced into or discharged from the container by opening the inside of the valve body in association with operation of the check valve.

The first check valve is disposed coaxially with the second check valve, it is preferable to interlock with a time difference after the operation of the second check valve. Preferably, the second check valve has an insertion groove into which a tip of the first check valve is inserted.

The second check valve may form a gas flow path along an outer circumferential surface. In this case, the second check valve may have a plurality of spacers protruding from the outer circumferential surface, and may secure a gas flow path between the plurality of spacers. .

In addition, the first check valve is coupled to the guide member that is elastically installed in the through hole of the retainer cap installed in the valve body is guided sliding along the longitudinal direction of the valve body, the retainer cap is a plurality of intervals on the outer peripheral surface The spacer is formed to protrude, and a gas flow path may be secured between the plurality of spacers.

It is preferable to further include an overcharge preventing unit disposed on one side of the valve body for discharging the gas charged when filling the gas to the outside of the container.

In another aspect, the present invention, the valve is installed in communication with the small LPG container is detachably fastened to the filling coupler of the gas supply source, the valve is operated in sequence with a time difference in conjunction with the operation of coupling the filling coupler By providing a valve of a small LPG container, characterized in that it comprises at least two check valves for opening the valve and closing the valve by sequentially operating in conjunction with the operation of disconnecting the filling coupler from the valve. Can be achieved.

The at least two check valves may be disposed coaxially along the coupling and disengaging directions of the filling coupler.

In addition, the at least two check valve may be provided with a gas flow path in the axial direction adjacent to the outer circumferential surface or the outer circumferential surface so that the gas flows along the outer circumference. In this case, the gas flow path may be disposed between the plurality of spacers as the plurality of spacers protrude from the outer circumferential surface of the check valve or in an adjacent axial direction.

It is preferable to further include an overcharge preventing unit disposed on one side of the valve body for discharging the gas charged when filling the gas to the outside of the container.

In this case, the valve body is a valve body having a communication hole in communication with the LPG container; A first check valve elastically installed in the communication hole of the valve body and selectively opening and closing the communication hole of the valve body; An adapter having a through hole communicatively coupled to the valve body and detachably fastened to a charging coupler of a gas supply source; And a second check valve elastically installed in the adapter to selectively open and close the through hole of the adapter in conjunction with the operation of coupling the charging coupler to the adapter. The first check valve includes the second check valve. Open the communication hole of the valve body in conjunction with the operation of.

The valve may further include: a retainer cap installed in the valve body and having a plurality of spacers protruding at an outer circumferential portion to secure a gas flow path with a through hole therein; A retainer coupled to a lower end of the communication hole of the valve body to support the retainer cap and having a plurality of gas inlet and outlet holes through which gas flows in and out; And a guide member elastically installed in the through hole of the retainer and having a front end coupled to the first check valve to slide along the longitudinal direction of the valve body when the first check member moves.

The coupler body of the gas supply source is coupled to one side is coupled to the outer circumference of the adapter and in communication with the adapter; A third check valve having one side elastically supported inside the coupler body and the other side pressing the tip of the second check valve when the filling coupler body is coupled to the adapter; And a locking portion for retracting along the coupler body to lock the charging coupler to the adapter when the charging coupler is coupled to the adapter, wherein the gas flows from the gas source to the vessel by a one-step operation of coupling the charging coupler to the adapter. It is either filled or discharged from the vessel into the gasifier.

As described above, in the present invention, by adopting a double sealing structure through the first and second check valves, as well as blocking gas leakage completely, when the user presses the secondary check valve with a device such as a skewer, There is an advantage to prevent the risk of leakage, such as misalignment, breakage, O-ring loss of the secondary check valve.

In addition, the present invention can ensure a sufficient flow path through the spacer formed on the first and second check valve respectively during filling and use can smoothly maintain the flow of gas.

In addition, the filling coupler can be easily filled with gas through the one-step fastening operation to the adapter of the valve, and likewise, the one-step operation of fastening the coupler of a device using a gas such as a gas range to the adapter can be used.

1 is a perspective view showing a double safety valve of a small LPG container according to an embodiment of the present invention,
Figure 2 is an exploded perspective view showing a double safety valve of the small LPG container according to an embodiment of the present invention,
3 is a cross-sectional view taken along line III-III shown in FIG. 1;
4 is a schematic view showing a state before coupling of the double coupler valve and the filling coupler coupled to the end of the filling hose of the small LPG container according to an embodiment of the present invention,
Figure 5 is a cross-sectional view showing a state in which the filling coupler coupled to the double safety valve of the small LPG container according to an embodiment of the present invention,
6 and 7 are cross-sectional views sequentially illustrating a gas flowing into the small LPG container when passing through the double safety valve.

Hereinafter, with reference to the accompanying drawings will be described the structure of a double safety valve of a small LPG container according to an embodiment of the present invention.

1 and 2 is a combined perspective view and an exploded perspective view showing a double safety valve of a small LPG container according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line III-III shown in FIG.

1 to 3, the double safety valve 1 of the small LPG container of the present embodiment is the valve body 10, the adapter 20, the first check valve 30, the second check valve 50 and Overcharge protection unit 70 is included.

The valve body 10 is screwed so that the lower end is in communication with the container (T), the upper end is formed with a coupling portion 11 to which the adapter 20 is coupled coaxially with the valve body 10. The valve body 10 and the coupling part 11 communicate with each other through the communication hole 15 so that the gas moves when the gas is filled and used.

In addition, the valve body 10 has an accommodating part 13 for accommodating the overcharge preventing unit 70 on one side thereof and substantially protrudes in a direction perpendicular to the valve body 10. The receiving portion 13 is in communication with the valve body 10 and the coupling portion (11).

The adapter 20 is detachably coupled to the coupling part 11, and the coupling portion of the adapter 20 and the coupling part 11 has an O-ring 21 to prevent gas from leaking inside the valve body 10. ) Is placed.

In addition, the adapter 20 communicates with the coupling portion 11 and is formed such that the inner diameter of the inlet 23 is smaller than the inner diameter adjacent to the coupling portion 11 side. Accordingly, the adapter 20 is slidably coupled to the inside of the second check valve 50 so as not to be separated from the adapter 20.

In addition, the adapter 20 has a coupling groove 25 in which the coupling ball 82a of the charging coupler 81 is snap-coupled to the outer circumference as shown in FIG. 5.

The first check valve 30 opens and closes the communication hole 15 to guide the gas flowing into the valve body 10 through the second check valve 50 into the container T when the gas is filled. In this case, the first check valve 30 extends toward the adapter 20 through the communication hole 15 so that the tip 31 can be drawn into the insertion groove 52 formed inside the second check valve 50. do.

In addition, the packing 37 is tightly coupled to the flange portion 33 adjacent to the rear end 35 of the first check valve 30, and the upper end of the cylindrical guide member 39 is coupled to the rear end 35.

The packing 37 is fixed between the flange portion 33 and the protrusion 39a of the cylindrical guide member 39. At the same time, the packing 37 is seated on the first valve seat 15a protruding along the periphery of the communication hole 15.

The cylindrical guide member 39 is slidably inserted into the guide hole 41a of the retainer cap 41 disposed inside the valve body 10. In this case, the cylindrical guide member 39 is elastically supported by the first return spring 43 inserted into the guide hole 41a, whereby the packing 37 is elastically supported by the first return spring 43. 1 is in close contact with the valve seat 15a.

The retainer cap 41 is inserted into the through hole 10a passing through the center of the valve body 10. In this case, a plurality of spacers 42 protrude along the lengthwise direction of the retainer cap 41 at intervals on the outer circumference of the retainer cap 41. Such a plurality of spacers 42 ensure a gas flow path of sufficient size so that the gas can move smoothly between the through hole 10a and the retainer cap 41.

The retainer 45 is fixedly disposed below the through hole 10a of the valve body 10 and supports the retainer cap 41. The retainer 45 is provided with a plurality of gas outlet holes 45a along the circumferential direction so that gas can move between the container T and the valve body 10. The retainer 45, together with the adapter 20, prevents the first and second check valves 30, 50 from being disengaged from the valve body 10.

In the second check valve 50, the front end portion 51 is slidably inserted into the through hole 20a of the adapter 20. The tip portion 51 is formed with an insertion groove 52 into which the tip 31 of the first check valve 30 is inserted.

In this case, when the second check valve 50 slides toward the valve body 10 during gas filling, the front end 31 of the first check valve 30 is in close contact with the end 52a of the insertion groove 52. Afterwards, the communication hole 15 is opened while pushing in conjunction with the second check valve 50 toward the valve body 10. As such, the insertion groove 52 of the second check valve 50 is formed in consideration of the interlock with the first check valve 30. Therefore, it is also possible to adjust the interlocking time with the first and second check valves 30 and 50 by appropriately adjusting the depth of the insertion groove 52 and the length of the tip of the first check valve 30.

In addition, the second check valve 50 protrudes along the longitudinal direction of the second check valve 50 at intervals along the outer circumference of the rear end 53. Such a plurality of spacers (53a) ensures a gas flow path of sufficient size to allow the gas to move smoothly between the second check valve 50 and the valve body (10).

One side of the second return spring 55 is supported around the communication hole 15 of the valve body 10, and the other side of the second return spring 55 is supported inside the second check valve 50. Accordingly, the second return spring 55 elastically supports the second check valve 50 to separate the coupler (not shown) coupled to the adapter 20 from the adapter 20 after gas filling and use are completed. If so, the second check valve 50 is returned to its original position.

Meanwhile, the O-ring 57 is coupled to the outer circumference of the second check valve 50, and the through hole of the adapter 20 is formed by the O-ring 57 according to the sliding movement of the second check valve 50. Open and close 20a).

The overcharge preventing unit 70 is installed in the accommodating part 13, and discharges the gas that can no longer flow into the container T when the gas is overcharged to the outside of the container T. The overcharge protection unit 70 includes a retainer 71, a poppet 73, a third return spring 75, and an airtight sheet 77.

The retainer 71 is coupled to one side of the accommodating part 13, and the poppet 73 is slidably inserted into the accommodating part 13. In this case, the retainer 71 is formed with a plurality of gas discharge holes 71a for discharging the gas.

The third return spring 75 is installed between the retainer 71 and the poppet 73 so that the poppet 73 is elastically disposed in the receiving portion 13.

The airtight sheet 77 is fixedly coupled to one side of the poppet 73 and closes the discharge hole 18 by the elasticity of the third return spring 75. In this case, when the gas flows from the container T to the discharge hole 18 during overcharging, the airtight sheet 77 is pushed toward the retainer 71 by the gas pressure, and the airtight sheet 77 is discharged. 18) Open.

The operation of the double safety valve of the small LPG container according to an embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

4 and 5 are views showing before and after coupling of the double safety valve and the filling coupler coupled to the end of the filling hose of the small LPG container according to an embodiment of the present invention, Figures 6 and 7 Is a cross-sectional view that sequentially shows the gas flowing into the small LPG container through the double safety valve.

Before describing the operation of the double safety valve 1 according to the present embodiment, the structure of the charging coupler 81 installed at one end of the hose 80 of the gas supply source (not shown) will be described with reference to FIGS. 4 and 5. .

The charging coupler 81 includes a third check valve 85 elastically supported by the fourth return spring 89 inside the coupler body 83. 3, the check valve 85 is coupled to a packing 87 for opening and closing the discharge hole 83a on the outer circumference thereof, and a plurality of spacers 85b for securing a gas flow path are provided at a rear end of the third check valve 85 at predetermined intervals. The protrusion is formed.

When gas is charged in the small LGP container T by using the charging coupler 81 formed as described above, the charging coupler 81 of the hose 80 connected to the gas supply source (not shown) is coupled to the adapter 20. .

 In this case, when the charging coupler 81 is coupled to the adapter 20, the locking ball 82a is inserted into the coupling recess 25 and the locking portion 82 is elastically supported by the return spring 84 and the coupler. Reverse along the body 83. Thereafter, the locking ball 82a is partially inserted into the locking groove 82b formed along the inner circumference of the front end of the locking portion 82, and the charging coupler 81 is locked to the adapter 20 to safely fill the gas.

When the charging coupler 81 is coupled to the adapter 20 in this manner, as shown in FIG. 5, the tip 85a of the third check valve 85 installed inside the charging coupler 81 is connected to the second check valve 50. When the tip 51 is pressurized, the second check valve 50 and the first check valve 30 are sequentially retracted, so that the through hole 20a of the adapter 20 and the communication hole 15 of the valve body 10 are closed. Are opened sequentially.

As a result, the gas is filled from the gas supply source into the container T by the one-step operation of coupling the charging coupler 81 to the adapter 20.

Hereinafter, the second check valve 50 and the first check valve 30 are sequentially operated by the third check valve 85 while the through hole 20a of the adapter 20 and the communication hole of the valve body 10 are provided. The process of opening (15) is explained in full detail.

Referring to FIG. 6, the second check valve 30 is retracted in a state in which the second check valve 30 is elastically supported by the second return spring 55 by the third check valve 85 introduced into the through hole 20a of the adapter 20. do. At the same time, the through hole 20a of the adapter 20, which is closed by the O-ring 57 coupled to the outer circumference of the second check valve 50, is opened.

Accordingly, the gas flows into the through hole 20a of the adapter 20 through the hose 80 and the charging coupler 81, and then passes through the flow path secured between the spacers 53a of the second check valve 50. Accordingly, the valve body 10 is introduced into the valve body 10.

Referring to FIG. 7, the second check valve 50 is continuously pressurized by the third check valve 85 toward the first check valve 30, and the first check valve is pressed in the pressing direction of the second check valve 50. Pressurize the valve 30. At this time, the second check valve 50 pressurizes the first check valve 30 with a predetermined time difference without pressing the first check valve 30 immediately after operation.

Accordingly, while the cylindrical guide member 39 slides along the guide hole 41a of the retainer cap 41, the first check valve 30 is retracted in a state of being elastically supported by the first return spring 43. do.

As the first check valve 30 moves backward, the communication hole 15 closed by the packing 37 is opened. Thereafter, the gas introduced into the valve body 10 is introduced into the container T through the valve body 10 through a flow path secured between the spacers 42 of the first check valve 30.

At this time, when the gas is overcharged in the container (T), the gas is no longer introduced into the container (T), but is discharged to the outside through the overcharge discharge unit (70).

As described above, in the present invention, since the double sealing structure is adopted by the packing 37 of the first check valve 30 and the O-ring 57 of the second check valve 50, the gas leakage is completely prevented. Of course, when the user presses the secondary check valve 50 with a device such as a skewer, the secondary check valve may be prevented from leaking, such as misalignment, breakage, and O-ring loss.

In addition, the present invention can ensure a sufficient flow path through the spacers 42 and 53a formed in the first and second check valves 30 and 50, respectively, during filling and use to smoothly maintain the flow of gas.

In addition, the one-step fastening operation of the charging coupler 81 to the adapter 20 of the valve 1 enables simple gas charging, and likewise, a coupler (not shown) of a device using a gas such as a gas range is connected to the adapter 20. It can be used with just one step operation.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

The invention applies to valves in small LPG vessels.

10: valve body 11: coupling part
13: receptacle 15: communication hole
20: adapter 20a: through hole
21,57: O-ring 23: inlet
25: coupling groove 30: first check valve
33: flange 37: packing
39: guide member 41: retainer cap
42, 53a: spacer 43: first return spring
45: retainer 50: second check valve
70: overcharge protection

Claims (15)

A valve body in communication with the LPG container;
An adapter communicatively coupled to the valve body to detachably couple the charging coupler of the gas supply source;
A first check valve elastically installed in the valve body; And
And a second check valve elastically installed in the adapter.
The second check valve is connected to the operation of coupling the charging coupler to the adapter to open the inside of the adapter, a gas flow path is formed along the outer circumferential surface, a plurality of intervals to secure the gas flow path on the outer circumferential surface of the second check valve Spacers are formed to protrude,
The first check valve is a valve of a small LPG container, characterized in that to open the inside of the valve body in conjunction with the operation of the second check valve. The small LPG container of claim 1, wherein the first check valve is disposed coaxially with the second check valve, and interlocks with a time difference after the second check valve is operated. The valve of claim 1, wherein the second check valve has an insertion groove into which a tip of the first check valve is inserted. delete delete The valve of claim 1, wherein the first check valve is coupled to a guide member elastically installed in a through hole of a retainer cap installed in the valve body, and is slidably guided along a length direction of the valve body.
The retainer cap has a plurality of spacers protruding at intervals on the outer peripheral surface, the valve of the small LPG container, characterized in that to secure a gas flow path between the plurality of spacers. The small LPG container of claim 1, further comprising an overcharge preventing unit disposed on one side of the valve body to discharge the gas charged when the gas is charged to the outside of the container. In the valve which is installed in a small LPG container in communication with the filling coupler of the gas supply source is detachably fastened,
At least two valves operating in sequence with a time difference in conjunction with the operation of coupling the charging coupler to open the valve, and sequentially operating in conjunction with the operation of separating the charging coupler from the valve to close the valve. With two check valves,
The at least two check valves have a gas flow path in the axial direction adjacent to the outer circumferential surface or the outer circumferential surface so that the gas flows along the outer circumference,
And the gas flow path is disposed between the plurality of spacers as the plurality of spacers protrude from the outer circumferential surface of the check valve or in an adjacent axial direction. 9. The valve of claim 8 wherein the at least two check valves are disposed coaxially along the engagement and disengagement direction of the filling coupler. delete delete delete The valve of claim 8, wherein the valve is
A valve body having a communication hole communicating with the LPG container;
A first check valve elastically installed in the communication hole of the valve body and selectively opening and closing the communication hole of the valve body;
An adapter having a through hole communicatively coupled to the valve body and detachably fastened to a charging coupler of a gas supply source; And
And a second check valve elastically installed in the adapter to selectively open and close the through hole of the adapter in conjunction with the operation of coupling the charging coupler to the adapter.
The first check valve is a valve of a small LPG container, characterized in that for opening the communication hole of the valve body in conjunction with the operation of the second check valve. The method of claim 13,
A retainer cap installed in the valve body and having a through hole therein and having a plurality of spacers protruded at an outer circumference to secure a gas flow path;
A retainer coupled to a lower end of the communication hole of the valve body to support the retainer cap and having a plurality of gas inlet and outlet holes through which gas flows in and out; And
And a guide member elastically installed in the through-hole of the retainer and having a front end coupled with the first check valve to slide along the longitudinal direction of the valve body when the first check member moves. Valve of the vessel. The method of claim 13, wherein the charging coupler of the gas supply source
A coupler body coupled to an outer circumference of the adapter and communicatively coupled to the adapter;
A third check valve having one side elastically supported inside the coupler body and the other side pressing the front end of the second check valve when the coupler body is coupled to the adapter; And
And a locking portion for locking the charging coupler to the adapter by reversing along the coupler body when the charging coupler is coupled to the adapter,
A valve of a small LPG container, wherein gas is filled from the gas supply to the container by a one-step operation of coupling the filling coupler to the adapter.

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