KR101897738B1 - Aerosol can and valve assembly thereof - Google Patents

Abstract

The present invention relates to a vacuum cleaner comprising: a housing having an upper sealing cap and a receiving space therein; A mount cup mounted on the upper sealing cap and having a through hole formed in a central portion thereof and a discharge port spaced apart from the through hole; A stem housing having a mounting portion having a hollow portion therein and mounted in the mount cup, and a communication passage communicating the hollow portion with the accommodation space; A valve stem having an orifice passing through the through hole and slidably disposed in the hollow portion, the orifice selectively communicating with the hollow portion by the sliding; And an overpressure prevention valve portion for preventing overpressure in the accommodation space, wherein the overpressure prevention valve portion includes a body having a flow path connecting the accommodation space and the discharge port; An opening / closing unit mounted movably along the flow path to open / close the flow path; And a shape memory spring which deforms into a shape set when the internal temperature of the accommodation space rises to a predetermined temperature to press the opening and closing part and open the flow path.

Description

AEROSOL CAN AND VALVE ASSEMBLY THEREOF FIELD OF THE INVENTION [0001]

The present invention relates to a distributor capable of overcoming an overpressure state.

Generally, a dispenser refers to a container that allows the contents to be discharged to the outside by using the internal pressure while the contents (fluid or gas) to be injected are sealed inside the housing. Typical examples of such dispensers are portable gas containers, spray mosquito repellents, hair sprays, portable aerosol fire extinguishers, and gas lighter containers.

Generally, the dispenser includes a housing (can) for containing contents, a mount cup fixed to the top of the housing, and a valve assembly fixed to the central protruding portion of the mount cup. The valve assembly is configured to maintain a sealed condition when the dispenser is not in use and to allow the contents to drain only when used.

However, the dispenser can reach overpressure conditions for thermal, mechanical or chemical reasons during use or storage, and since the valve assembly discharges a certain amount of contents or is in an airtight state, when the dispenser reaches an overpressure state, (Expansion or deformation, etc.) occurs.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a distributor and its valve assembly which are equipped with an over-pressure relieving mechanism different from conventional ones, and can overcome over-pressure before a malfunction due to overpressure occurs.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a dispenser comprising: an upper sealing cap for sealing an upper portion thereof; a housing having therein a receiving space for receiving contents therein; A mount cup mounted on the upper sealing cap and having a through hole formed in a central portion thereof and a discharge port spaced apart from the through hole; A stem housing having a mounting portion having a hollow portion therein and mounted in the mount cup, and a communication passage communicating the hollow portion with the accommodation space; A valve stem having an orifice through one of the through holes and the other of the through holes and slidably disposed in the hollow portion, the orifice selectively communicating with the hollow portion by the sliding; And an overpressure prevention valve portion for preventing overpressure in the accommodation space, wherein the overpressure prevention valve portion includes a body having a flow path connecting the accommodation space and the discharge port; An opening / closing unit mounted movably along the flow path to open / close the flow path; And a shape memory spring which deforms into a shape set when the internal temperature of the accommodation space rises to a predetermined temperature and presses the opening and closing part to open the flow path.

According to one embodiment of the present invention, the body may include a first flow path extending from the discharge port in the longitudinal direction of the housing.

According to an embodiment of the present invention, the body may further include a second flow path extending from the first flow path toward the side of the housing so as to communicate with the accommodation space.

According to an example of the present invention, the opening / closing part may be movably mounted on the first flow path.

According to an embodiment of the present invention, the opening / closing part may be movably mounted to the second flow path.

According to one embodiment of the present invention, the overpressure prevention valve portion includes at least a part of the overpressure prevention valve portion inside the end portion of the passage so that the shape memory spring can be mounted thereon, and a hollow hole for communicating the accommodation space with the passage And a mounting cap.

According to an embodiment of the present invention, the opening / closing part is disposed between the discharge port and the mounting cap, and the overpressure prevention valve part is configured such that the opening / closing part closes the hollow hole of the mounting cap, Spring.

According to an embodiment of the present invention, the stem housing includes a first communication passage portion extending from the mounting portion in a sliding direction of the valve stem, and a second communication passage portion extending from the first communication passage portion in a direction crossing the side surface of the housing. Two communicating flow paths; And a support which is circumferentially spaced along the outer circumferential surface of the mounting portion and projects radially from the outer circumferential surface and engages with the bottom surface of the mount cup.

According to an embodiment of the present invention, the discharge port is disposed so as to be opposed to the extending direction of the second flow path in the through-hole, and each of the first and second communication flow path portions is connected to the first and second flow paths As shown in FIG.

According to an embodiment of the present invention, the overpressure prevention valve unit includes: a first connection unit integrally connecting the first flow path and the first communication flow path unit so as to be integrated with the stem housing; And a second connection portion that integrally connects the second flow path portion with the second flow path portion.

According to an embodiment of the present invention, the opening / closing part may further include a plurality of fluid grooves which are spaced apart from each other along the circumferential direction and are concave to move the fluid.

The valve assembly associated with the present invention is mounted in a mount cup fixed to the top of the housing and includes the following stem housing, valve stem, overpressure prevention valve portion.

The stem housing may include a mounting portion having a hollow portion therein and mounted in the mount cup, and a communication passage communicating the hollow portion with the accommodation space.

The valve stem may include an orifice having one side penetrating the center portion of the mount cup and the other side being slidably disposed in the hollow portion and selectively communicating with the hollow portion by the sliding.

The overpressure prevention valve portion is communicably connected to a discharge port spaced apart from a center portion of the mount cup to prevent overpressure in the containing space.

The overpressure prevention valve unit may include: a body having a passage connecting the accommodation space and the discharge port; An opening / closing unit mounted movably along the flow path to open / close the flow path; A shape memory spring that deforms into a shape set when the internal temperature of the accommodation space rises to a predetermined temperature to press the opening and closing part and open the flow path; At least a part of which is accommodated inside the end portion of the flow path so that the shape memory spring can be mounted thereon and a hollow hole therein for communicating the accommodation space with the flow path; And a pressing spring for elastically pressing one side of the opening and closing part so that the opening and closing part closes the hollow hole of the mounting cap.

According to the present invention configured as described above, the following effects can be obtained.

First, a shape memory spring is provided in the mount cup of the housing and deformed when the temperature reaches the set temperature in response to the internal temperature of the housing. The inner pressure of the housing is increased It is possible to eliminate the overpressure of the distributor by discharging the overpressure gas through the operation of the overpressure prevention valve portion due to the deformation of the shape memory spring before the valve is opened, thereby preventing malfunction due to overpressure.

Secondly, when the valve assembly is mounted on the mounting cup such that the through hole of the mount cup passes through one end of the valve assembly and the other side of the valve assembly is disposed inside the housing space of the housing, The support and the mount cup are supported to each other, so that the assemblability of the stem housing can be improved.

Third, a connection is provided between the stem housing and the body of the overpressure prevention valve so that the stem housing and the overpressure prevention valve are integrated with each other, thereby simplifying the manufacturing process of the distributor and reducing the manufacturing cost.

Fourth, there is an advantage that the shape memory spring can be easily mounted by machining the spring assembly so that the shape memory spring can be mounted on one side of the mounting cap.

Fifth, it is possible to secure a flow path for instantly discharging the over-pressure fluid through the plurality of fluid grooves formed so as to be spaced along the circumferential direction of the opening and closing part.

1 is a sectional view showing a distributor equipped with a valve assembly according to an embodiment (first embodiment) of the present invention.
FIG. 2 is a perspective view showing a state in which the valve assembly is mounted on the mount cup of FIG. 1;
3 is a bottom perspective view of the valve assembly of FIG. 2 as viewed from the bottom.
4 is a cross-sectional view taken along the line AA in Fig.
5 is an enlarged view of B in Fig.
FIG. 6 is a plan view of the mount cup viewed from above in FIG. 2;
7 is a perspective view showing a mounting cap mounted to the mounting groove 1323 of FIG.
8 is a perspective view showing an opening / closing part mounted to the mounting groove 1323 of FIG.
FIG. 9 is a perspective view showing a shape memory spring mounted in the mounting groove 1323 of FIG.
10 is an enlarged view showing an enlarged view of a portion C in FIG.
FIG. 11 is a conceptual view showing the overpressure action of the overpressure prevention valve portion according to the deformation of the shape memory spring when the overpressure of the accommodation space occurs in FIG.
FIG. 12 is a perspective view showing a valve assembly according to another embodiment (second embodiment) of the present invention mounted on a mount cup. FIG.
FIG. 13 is a bottom perspective view of the valve assembly of FIG. 12 viewed from the bottom; FIG.
Fig. 14 is a conceptual view showing components of the overpressure prevention valve portion constituting the valve assembly as viewed from the lateral direction of the valve assembly of Fig. 12; Fig.
FIG. 15 is a perspective view showing the body of the stem housing and the overpressure prevention valve unit in an integrated state in FIG. 12. FIG.
16 is a side sectional view of Fig. 15. Fig.
17 is an enlarged view showing in enlarged scale the constituent elements of the over-pressure prevention valve portion in Fig.
Fig. 18 is a state diagram showing the over-pressure canceling action of the over-pressure prevention valve portion in Fig.
FIG. 19 is a perspective view showing a valve assembly according to still another embodiment (third embodiment) of the present invention mounted on a mount cup; FIG.
20 is a bottom perspective view of the valve assembly of FIG. 19 viewed from the bottom.
FIG. 21 is a conceptual view showing the components of the overpressure prevention valve portion constituting the valve assembly, while looking from the side direction of the valve assembly of FIG. 19; FIG.
FIG. 22 is a perspective view showing a state in which the stem housing and the body of the overpressure prevention valve are integrated in FIG. 19; FIG.
Fig. 23 is a side sectional view of Fig. 22. Fig.
24 is an enlarged view showing in enlarged scale the constituent elements of the over-pressure prevention valve portion in Fig.
FIG. 25 is a state diagram showing the over-pressure canceling action of the over-pressure prevention valve portion in FIG.

Hereinafter, a distributor and a valve assembly thereof according to the present invention will be described in detail with reference to the drawings. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be obscured.

1 is a sectional view showing a distributor equipped with a valve assembly according to an embodiment (first embodiment) of the present invention. In FIG. 1, the middle portion of the longitudinal side of the distributor is independent of the features of the present invention, and is considered unnecessary in explaining the present invention, and is deleted by two incisions. However, In reality, each side of the distributor extends vertically and is connected to each other.

The housing 10 is cylindrical and has a receiving space 14 therein to accommodate the contents such as fluid or gas and the jetting gas.

The housing 10 includes a body 11 on which a receiving space 14 is formed and a lower sealing cap 12 and an upper sealing cap 13 for sealing both ends of the body 11. The lower sealing cap 12 may be curved toward the receiving space 14 so that the volume of the receiving space 14 is increased when the receiving space 14 is overpressurized to a certain level or more. .

The housing 10 may contain a high-pressure gas or liquid fuel, and may be formed in the form of a metal can that can withstand a constant internal pressure. However, the present invention is not limited thereto, and the housing 10 may contain pesticides, fragrances, cosmetics, and the like.

Referring to FIG. 1, a mount cup 15 for supporting the valve assembly 100 is coupled to the upper end of the upper sealing cap 13.

The mount cup 15 includes a latching portion 152 for mounting the fuel assembly on a fuel loading device such as a gas stove and includes a protruding portion 151 at the center for fixing the valve assembly 100 Lt; / RTI > However, the latching portion 152 may not be present in some cases, or may be formed in another form. For example, a cap having a push button for spraying may be mounted when the housing 10 contains a cosmetic agent, insecticide, or the like in a different form of the engaging portion 152.

FIG. 2 is a perspective view showing a state in which the valve assembly 100 is mounted on the mount cup 15 of FIG. 1, FIG. 3 is a bottom perspective view of the valve assembly 100 of FIG. 2 viewed from the bottom, FIG. 5 is an enlarged view of B in FIG. 4. FIG.

2, a notch groove 153 is formed on one side of the latching portion 152 so as to be mounted on the gas range, and when the distributor is mounted on the distributor accommodating portion of the gas range, the notch groove 153 ) Is disposed toward the upward direction of the distributor receiving portion.

The valve assembly 100 includes a valve stem 110 and a stem housing 120 for discharging the contents filled in the accommodation space 14 by being pressed.

A through hole 154 is formed in the upper center portion of the protruding portion 151 of the mount cup 15.

Shaped opening and closing member 111 is mounted on the inner surface of the upper end of the protruding portion 151 of the mount cup 15 so as to cover a part of the through hole 154. [

The valve stem 110 is slidably mounted on the upper end of the protruding portion 151 of the mount cup 15 by the opening and closing member 111 in the vertical direction. The upper portion of the valve stem 110 is exposed to the outside of the housing 10 through the center hole of the opening and closing member 111 and the through hole 154. The lower portion of the valve stem 110 is exposed to the outside of the mount cup 15 And is arranged so as to be housed in the upper end inside of the protruding portion 151. The valve stem 110 is formed in a side surface of the valve stem 110 along a circumferential direction and an inner circumferential portion of the opening and closing member 111 is inserted into and coupled with the coupling groove. As shown in Fig.

An exhaust hole 112 is formed in the upper end of the valve stem 110 and an orifice 113 is formed between the lower end of the exhaust hole 112 and the coupling groove. The housing space 14 of the housing 10 can be communicated with each other. At this time, the opening and closing member 111 surrounds the coupling groove of the valve stem 110, and the orifice 113 can be selectively opened and closed by sliding the valve stem 110.

The stem housing 120 includes a mounting portion 121 having a hollow portion 1211 therein and a communication passage 123 for communicating the hollow portion 1211 with the accommodation space 14 of the housing 10 . The hollow portion 1211 may be selectively in communication with the exhaust hole 112 through the orifice 113.

A portion of the mounting portion 121 is received within the protruding portion 151 of the mount cup 15 and has a hollow portion 1211 therein so that the lower portion of the valve stem 110 is slidable in the hollow portion 1211 . At this time, the upper end of the mounting portion 121 is configured to support the outer peripheral portion of the opening and closing member 111.

A valve spring 122 is provided inside the mounting portion 121 and the valve spring 122 is configured to elastically support the lower portion of the valve stem 110.

A plurality of supports 1212 are arranged on the outer circumferential surface of the mounting portion 121 so as to be spaced from each other along the circumferential direction and protrude in the radial direction at the mounting portion 121. Each of the plurality of supports 1212 is engaged with the bottom surface of the protruding portion 151 of the mount cup 15 so that the stem housing 120 is held suspended from the mount cup 15. A plurality of ribs 1213 may be formed between the plurality of supports 1212 and the outer peripheral surfaces of the mounting portions 121 to strengthen the support strength of the supports 1212. [

A communication passage 123 is provided in the stem housing 120 to communicate the hollow portion 1211 with the accommodation space 14 of the housing 10.

The communication passage 123 includes a first communication passage portion 1231 extending in the longitudinal direction of the housing 10 or in the same or similar direction as the sliding direction of the ball stem and a second communication passage portion 1231 extending from the first communication passage portion 1231 to the housing 10 And a second communication passage portion 1232 extending in a lateral direction of the first communication passage portion 1232. The second communication flow path portion 1232 may extend in a direction crossing the side surface of the housing 10. The upper end portion of the first communication flow path portion 1231 communicates with the hollow portion 1211 and the end portion of the second communication flow path portion 1232 is disposed apart from the upper sealing cap 13 to communicate with the accommodation space 14 .

The gas outflow action of the valve assembly 100 will be described with reference to FIG.

The notch groove 153 of the mount cup 15 is directed upward in the dispenser receiving portion and the second portion of the stem housing 120 The communication flow path portion 1232 is also arranged to face upward. In the case of a distributor using liquid fuel, the liquid fuel can sink in the direction of gravity during use, and the gaseous fuel evaporated into the upper space of the accommodation space 14 with reference to the imaginary longitudinal center line of the housing 10, And can flow into the hollow portion 1211 through the two-way communication passage portion 1232 and the first communication passage portion 1231. [

The valve stem 110 can be pushed in the lengthwise direction of the housing 10 so that the valve stem 122 is compressed and the valve stem 110 is slid toward the accommodation space 14. [ The inner peripheral portion of the opening and closing member 111 is pushed into the receiving space 14 by the sliding of the valve stem 110 so that the orifice 113 is opened so that the gaseous fuel in the receiving space 14 flows into the stem housing 120 through the valve stem 110 at the hollow portion 1211 of the valve stem 120. [ When the pressing is released, the injection of the contents can be stopped.

6 is a plan view of the mount cup 15 viewed from above in Fig.

Referring to FIG. 6, the mount cup 15 has a discharge port 155 that is disposed apart from the through hole 154 formed at the center of the protruding portion 151. The discharge port 155 is formed to be spaced from the through hole 154 in a direction opposite to the notch groove 153.

Referring to FIGS. 1 to 4, the valve assembly 100 includes an overpressure prevention valve part 130 for relieving the overpressure of the accommodation space 14.

The overpressure prevention valve unit 130 includes a body 131, an opening and closing unit 133, a pressure spring 134, a shape memory spring 135, and a mounting cap 136.

One end of the flow path 132 is connected to the discharge port 155 and the other side of the flow path 132 is formed to communicate with the receiving space 14, The contents of the accommodation space 14 can be selectively discharged to the outside of the housing 10 through the outlet port 155 via the flow path 132.

The flow path 132 has a first flow path 132a extending from the discharge port 155 in the longitudinal direction of the housing 10 and a second flow path 132b extending from the first flow path 132a in the lateral direction of the housing 10, (132b). The first and second flow paths 132a and 132b may be at right angles to each other and the outer edge of the body 131 forming the boundary between the first flow path 132a and the second flow path 132b may have a curved surface Section.

A rectangular sealing member 1321 may be provided on the upper portion of the body 131 to maintain the airtightness between the upper end of the first flow path 132a and the discharge port 155. [ A sealing member fixing groove 1322 is formed at the upper end of the body 131 so that the sealing member 1321 can be inserted into the sealing member fixing groove 1322. [ The sealing member 1321 may be formed to be elongated in the height direction and have an elliptical cross-sectional shape and surround the periphery of the discharge port 155.

The overpressure prevention valve unit 130 may further include a connection part 140 structurally connecting the stem housing 120 and the body 131 to integrate the stem housing 120 with the stem housing 120.

The body 131 is integrally formed with the stem housing 120 by a connecting portion 140.

The first flow path 132a of the body 131 is disposed in parallel with the first communication flow path portion 1231 of the stem housing 120 and the second flow path 132b of the body 131 is connected to the stem housing 120 may be arranged in parallel with the second communication passage portion 1232 in the same direction. The end portion of the second flow path 132b may be spaced away from the side surface of the housing 10 inwardly of the second communication flow path portion 1232.

The connection portion 140 includes a first flow path 132a and a first connection portion 141 structurally connecting the first communication flow path portion 1231 and a second flow path 132b disposed in parallel to and spaced apart from each other, And a second connecting portion 142 structurally connecting the first communication passage portion 1232 and the second communication passage portion 1232 with each other. Both side surfaces of the first coupling part 141 may connect the first communication path part 1231 with the first communication path part 132a in the form of a vertical plane. The second coupling part 142 can connect the second flow path 132b and the second communication path part 1232 in the form of a thin plate. The connecting portion 140 is for structurally connecting the body 131 and the stem housing 120 and does not allow the flow path 132 of the body 131 and the communication path 123 of the stem housing 120 to communicate with each other.

When the body 131 and the stem housing 120 are integrated, the number of parts is reduced, the manufacturing process is simplified, and the manufacturing cost can be reduced.

The opening and closing part 133 and the like may be provided in the first flow path 132a or the second flow path 132b. 4 shows an example in which the opening and closing part 133 is provided in the second flow path 132b. The mounting groove 1323 for mounting the opening and closing part 133, the pressure spring 134, the shape memory spring 135 and the mounting cap 136 is formed to have a large diameter from the middle to the end of the second flow path 132b.

FIG. 7 is a perspective view showing a mounting cap 136 mounted on the mounting groove 1323 in FIG. 4, FIG. 8 is a perspective view showing an opening / closing part 133 mounted on the mounting groove 1323 in FIG. 4 is a perspective view showing a shape memory spring 135 mounted on the mounting groove 1323 of FIG.

The mounting cap 136 of FIG. 7 may be comprised of a first portion 1361, a second portion 1362, and a third portion 1363. The first portion 1361 to the third portion 1363 may all be formed in a cylindrical shape. The first to third portions 1363 to 1363 are successively arranged on the same axial line and each of the first portion 1361 to the third portion 1363 has a smaller diameter from the first portion 1361 to the third portion 1363 . The first portion 1361 to the third portion 1363 share one hollow hole 1364 which is continuously communicated in the longitudinal direction inside. The hollow hole 1364 is smaller in diameter than the second flow path 132b. The hollow hole 1364 can communicate the accommodation space 14 and the second flow path 132b.

The third portion 1363 of the mounting cap 136 is received within the mounting groove 1323 of the second flow path 132b so that the shape memory spring 135 can be mounted on the outer circumferential surface of the third portion 1363 .

The second portion 1362 of the mounting cap 136 may be formed to have a slightly smaller diameter than the mounting groove 1323. A fixing protrusion 1362a is protruded in a wedge shape along a circumferential direction at one side of the second portion 1362 and is tightly engaged with the mounting groove 1323 so that the mounting cap 136 is connected to the second flow path 132b, From being removed from the mounting groove 1323 of the second flow path 132b to the outside of the second flow path 132b.

The third portion 1363 of the mounting cap 136 is formed to be larger in diameter than the second flow path 132b and is disposed outside the second flow path 132b so that the mounting cap 136 is located inside the second flow path 132b Limit movement.

The opening and closing part 133 is accommodated in the second flow path 132b and the second flow path 132b is movably mounted in the mounting groove 1323 of the second flow path 132b. The opening and closing part 133 is configured to selectively open and close the hollow hole 1364 of the mounting cap 136. Thereby, the first flow path 132a communicating with the second flow path 132b, the second flow path 132b, and the discharge port 155 communicating with the first flow path 132a can be selectively opened and closed.

8 may include a first opening / closing part 1331 and a second opening / closing part 1332. The first opening / The first opening and closing part 1331 is formed into a hollow cylindrical shape and can selectively open and close the hollow hole 1364 of the mounting cap 136. [

A plurality of fluid grooves may be formed along the circumferential direction on the outer peripheral surface of the first opening and closing part 1331, and the plurality of fluid grooves may be spaced apart in the circumferential direction. Fluid grooves can be of various shapes such as trapezoidal, triangular and circular. This makes it possible to secure the flow path 132 through which the fluid in the accommodation space 14 flows from the hollow hole 1364 of the mounting cap 136 into the second flow path 132b.

The second opening and closing part 1332 is formed smaller in diameter than the first opening and closing part 1331. A pressure spring 134 may be mounted on the second portion 1362. A plurality of spring mounting projections 1332a formed in an arc shape on an outer circumferential surface of the second opening and closing part 1332 are spaced apart from each other so that friction between the pressing spring 134 and the second opening and closing part 1332 can be minimized have.

The pressing spring 134 is fixed to the inner end of the mounting groove 1323 and the other end is fixed to the step of the first opening and closing part 1331 so that the opening and closing part 133 is closed in the direction of closing the hollow hole 1364. [ (133). The elastic force of the pressure spring 134 acts in a direction opposite to the moving direction of the fluid.

When the overpressure of the accommodation space 14 is applied to the first opening / closing part 1331 through the hollow hole 1364, the opening / closing part 133 can be opened because of the elastic force of the pressure spring 134. The modulus of elasticity of the pressure spring 134 can be set to open the opening and closing part 133 when the pressure in the accommodation space 14 exceeds the set pressure.

As shown in Fig. 9, the shape memory spring 135 may be formed in a spiral shape. The shape memory spring 135 is mounted on the third portion 1363 of the mounting cap 136 and the shape memory spring 135 is mounted on the second portion 1362 and the opening / And may be disposed between the first opening and closing portions 1331.

The shape memory spring 135 is deformed into a predetermined shape when it reaches the set temperature in response to the temperature inside the accommodation space 14, and can be restored to the original state when the temperature is lower than the set temperature. The deformation of the shape memory spring 135 may be such that the length thereof expands.

According to this, when the shape memory spring 135 receives heat of a temperature higher than the set temperature, the opening / closing part 133 can be pressed and opened.

FIG. 10 is an enlarged view showing an enlarged view of a portion C in FIG. 4, and FIG. 11 is an enlarged view showing an overpressure prevention valve portion 130 according to a deformation of the shape memory spring 135 when overpressure occurs in the accommodation space 14 in FIG. Of the overpressure.

In this case, the overpressure prevention valve unit 130 is configured to relieve the overpressure in the accommodation space 14 of the housing 10.

The shape memory spring 135 of the overpressure prevention valve unit 130 is configured such that when the gas temperature in the accommodation space 14 rises above the set temperature, the gas temperature inside the accommodation space 14 And is deformed in response to the expansion of the length. For example, the set temperature may be 90 ° C.

The deformation of the shape memory spring 135 causes the opening / closing part 133 to be pressed into the second flow path 132b and the hollow hole 1364 is opened.

The gas in the accommodation space 14 flows from the mounting groove 1323 of the second flow path 132b to the second flow path 132b through the fluid groove of the first opening and closing part 1331 in the hollow hole 1364, And is discharged to the outside of the housing 10 through the outlet 155 via the one flow path 132a.

On the other hand, when the internal temperature of the accommodation space 14 decreases with the pressure drop of the accommodation space 14 due to the gas discharge, the shape memory spring 135 is restored to its original shape, The ejection may be interrupted.

12 is a perspective view showing a state in which a valve assembly 200 according to another embodiment (a second embodiment) of the present invention is mounted on a mount cup 15, FIG. 13 is a perspective view showing the valve assembly 200 of FIG. FIG. 14 is a conceptual view showing the components of the overpressure prevention valve unit 230 constituting the valve assembly 200 while looking at the valve assembly 200 of FIG. 12 from the lateral direction, and FIG. 15 is a cross- FIG. 16 is a side sectional view of FIG. 15, and FIG. 17 is an enlarged view of a component of the overvoltage preventing valve portion in FIG. 14, and FIG. And FIG. 18 is a state diagram showing the over-pressure canceling action of the over-pressure prevention valve portion in FIG.

In the overpressure prevention valve unit 230 of the valve assembly 200 according to the present embodiment, a part of the body 231 may be eliminated. That is, the second flow path 132b extending in the lateral direction of the housing 10 is left in the discharge port 155 while the first flow path 232a of the body 231 extending in the longitudinal direction of the housing 10 is left as it is .

The first flow path 232a may be disposed toward the lower sealing cap 12 rather than toward the side of the housing 10.

14, the opening / closing part 233, the pressure spring 234, the shape memory spring 235, and the mounting cap 236 are mounted perpendicularly to the first flow path 232a.

15, a circumferential groove 2214 is formed in the circumferential direction around the mounting portion 221. A locking protrusion (not shown) is formed at the lower end of the protruding portion 151 of the mount cup 15 221) of the base member (22). A locking protrusion (not shown) may be inserted into the circumferential groove 2214 so that the stem housing 120 can be mounted on the mount cup 15.

The plurality of supports 2212 may be spaced apart from each other in the circumferential direction at intervals of 90 degrees below the circumferential groove 2214 of the mounting portion 221. Each of the plurality of supports 2212 is formed so as to protrude in a radial direction with respect to the circumferential surface of the mount portion 221 and can be engaged with the bottom surface of the protruding portion 151 of the mount cup 15 on the upper surface of each support 2212 .

The first flow path 232a of the overpressure prevention valve part 230 may extend in parallel with the first communication path part 1231 of the stem housing 120 in the same direction.

The first flow path 232a may be formed to be perpendicular to the second communication flow path 1232 of the stem housing 120. The first flow path 232a may be positioned lower than the notch groove 153 when the distributor is mounted in the gas range or the like in a lateral direction.

A plurality of protruding portions 2215 may be formed on the inner circumferential surface of the mounting portion 221. [ The plurality of protrusions 2215 can form a clearance between the inner circumferential surface of the mounting portion 221 and the valve spring when the valve spring 122 is inserted and secured to secure the flow path 132. [

A mounting groove 2323 for mounting the opening and closing part 233 and the like may be formed in the first flow path 232a. An inner protrusion 2324 is formed at the upper end of the first flow path 232a and a sealing member fixing groove 2321 is formed at the upper portion of the inner protrusion 2324 with the inner protrusion 2324 interposed therebetween. And a mounting groove 2323 may be formed in the lower portion of the inner protrusion 2324. [ A plurality of protrusions 2325 for securing the flow path 132 are formed at the upper end of the mounting groove 2323 so as to be spaced along the inner circumferential surface of the mounting groove 2323.

17, the sealing member 2321 is mounted on the sealing member fixing groove 2322, and the pressing spring 234, the opening / closing member 233, the shape memory spring 235, and the mounting cap 2323 236) is mounted.

The opening and closing part 233, the pressing spring 234, the shape memory spring 235 and the mounting cap 236 are arranged vertically in a manner different from the first embodiment described above, Are the same as or similar to those of the first embodiment, and a duplicate description will be omitted.

19 is a perspective view showing a state in which a valve assembly 300 according to another embodiment (third embodiment) of the present invention is mounted on a mount cup 15, FIG. 20 is a perspective view showing a valve assembly 300 FIG. 21 is a conceptual view showing components of the overpressure prevention valve unit 330 constituting the valve assembly 300 while viewing the valve assembly 300 of FIG. 19 in a lateral direction, and FIG. 22 is a cross- FIG. 23 is a side sectional view of FIG. 22, and FIG. 24 is a cross-sectional view of the overpressure prevention valve according to an embodiment of the present invention. And FIG. 25 is a state diagram showing the over-pressure relief action of the over-pressure prevention valve portion in FIG.

The overpressure prevention valve 330 of the valve assembly 300 according to the present embodiment eliminates a part of the body 331 compared to the first embodiment and ensures the passage 132 for gas inflow into the accommodation space 14 And the first communicating flow path portion 1231 of the harmful stem housing 120 is shared.

19 and 20, in this embodiment, the first flow path 332a of the body 331 extending in the longitudinal direction of the housing 10 is left as it is, and the first flow path 332a extends from the first flow path 332a to the side of the housing 10 The lower end of the first flow path 332a is communicated with the first communication flow path portion 1231 of the stem housing 120 so that the overpressure gas in the accommodation space 14 Flows into the first communication flow path portion 1231 and then flows to the first flow path 332a and flows out to the outside of the housing 10 through the discharge port 155. [

The lower end of the first flow path 332a of the body 331 is closed and the connection flow path 337 extends from the lower end of the first flow path 332a to the first communication flow path portion 1231, So that the flow path portion 1231 and the first flow path 332a can communicate with each other.

21, a mounting groove 3323 for mounting the opening and closing part 333 and the like is formed in the first flow path 332a and disposed in the lower part of the sealing member fixing groove 3322. [

A pressing spring 334, an opening / closing part 333, and a shape memory spring 335 can be mounted on the mounting groove 3323. [ Here, the mounting cap 236 may be eliminated. A communication hole 336 having a diameter smaller than that of the first flow path 332a is formed between the first flow path 332a and the first communication flow path portion 1231. [ The opening and closing part 333 may further include a third opening and closing part 3333 for mounting the shape memory spring 335 as well as a second opening and closing part 3332 for mounting the pressing spring 334. The third opening and closing part 3333 is protruded in the opposite direction to the second opening and closing part 3332 with the first opening and closing part 3331 interposed therebetween. The second open / close part 3332 and the third open / close part 3333 are smaller in diameter than the first open / close part 3331. The communication hole 336 is formed to be smaller in diameter than the shape memory spring 335 and the third open / close part 3333 of the opening / closing part 333. Accordingly, even if the mounting cap 236 is omitted, there is no problem in operation of the overpressure prevention valve unit 330, the number of components can be reduced, and the cost reduction effect is obtained.

Other components are the same as or similar to those of the first embodiment or the second embodiment, and a duplicate description will be omitted.

It will be apparent to those skilled in the art that various modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims. will be.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

10: housing 11: body
12: Lower sealing cap 13: Upper sealing cap
14: accommodation space 15: mount cup
151: projecting portion 152: engaging portion
153: notch groove 154: through hole
155: outlet 100, 200, 300: valve assembly
110: valve stem 111: opening / closing member
112: exhaust hole 113: orifice
120: stem housing 121:
1211: hollow part 1212,2212,3212: support
1213, 221, 3213: rib 122: valve spring
123: communication channel 1231: first communication channel portion
1232: second communicating flow path portion 130, 230, 330: overpressure prevention valve portion
131, 231, 331: Body 132:
132a, 232a, 332a:
1321,2321,3321:
1322, 23232, and 3332:
132b: second flow path 1323,2323,3323: mounting groove
2324: inner protrusions 2215, 3215, 2325:
133, 233, 333:
1331, 3331: a first opening /
1331a: Fluid grooves 1332, 3332: Second open /
3333: third open / close part 1332a: spring mounting projection
134,234,334:
135, 235, 335: shape memory spring
136,236: mounting cap 1361: first part
1362: Second part 1362a: Fixing projection
1363: third part 1364: hollow hole
140: connection part 141: first connection part
142: second connection portion 336: communication hole
337: connecting euro

Claims (12)

An upper sealing cap for sealing the upper portion; a housing having therein a receiving space for receiving contents;
A mount cup mounted on the upper sealing cap and having a through hole formed in a central portion thereof and a discharge port spaced apart from the through hole;
A stem housing having a mounting portion having a hollow portion therein and mounted in the mount cup, and a communication passage communicating the hollow portion with the accommodation space;
A valve stem having an orifice through one of the through holes and the other of the through holes and slidably disposed in the hollow portion, the orifice selectively communicating with the hollow portion by the sliding; And
And an overpressure prevention valve portion for preventing overpressure in the accommodation space,
The over-
A body having a channel connecting the accommodation space and the outlet;
An opening / closing unit mounted movably along the flow path to open / close the flow path;
A shape memory spring that deforms into a shape set when the internal temperature of the accommodation space rises to a predetermined temperature to press the opening and closing part and open the flow path;
A mounting groove extending along the longitudinal direction from an end of the flow path to the inside of the flow path and mounting the opening and closing part and the shape memory spring; And
And a mounting cap detachably coupled to an end of the flow path,
The mounting cap includes:
A first portion having a first diameter greater than an inner diameter of the mounting groove to restrict movement of the mounting cap to the inside of the flow path;
A second portion having a second diameter smaller than an inner diameter of the mounting groove, the second portion being received within the mounting groove;
A third portion having a first diameter smaller than the second diameter and inserted into the shape memory spring so that the shape memory spring is mounted; And
And a fixing protrusion formed on one side of the second portion in a circumferential direction and coupled to the mounting groove by interference fit. The method according to claim 1,
Wherein the body includes a first flow path extending from the outlet in the longitudinal direction of the housing. 3. The method of claim 2,
Wherein the body further comprises a second flow path extending from the first flow path toward the side of the housing to communicate with the accommodation space. 3. The method of claim 2,
And the opening / closing portion is movably mounted to the first flow path. The method of claim 3,
And the opening / closing part is movably mounted to the second flow path. The method according to claim 1,
The mounting cap includes:
Wherein at least a part of the shape memory spring is accommodated inside the end portion of the passage so that the shape memory spring can be mounted thereon and a hollow hole for communicating the accommodation space with the passage is provided inside. The method according to claim 6,
Wherein the opening / closing portion is disposed between the outlet and the mounting cap,
Wherein the overpressure prevention valve portion includes a pressing spring for elastically pressing one side of the opening / closing portion so that the opening / closing portion closes the hollow hole of the mounting cap. The method of claim 3,
The stem housing includes:
A first communication flow path portion extending from the mounting portion in a sliding direction of the valve stem and a second communication flow path portion extending in a direction intersecting the side surface of the housing in the first communication flow path portion; And
Further comprising: a support spaced circumferentially along an outer circumferential surface of the mounting portion and radially protruding from the outer circumferential surface to engage with a bottom surface of the mount cup. 9. The method of claim 8,
Wherein the discharge port is disposed in the through hole so as to be spaced away from the extending direction of the second flow path,
Wherein the first and second communication passage portions are disposed in parallel to each other in the same direction as the first and second communication passage portions. 10. The method of claim 9,
The overpressure prevention valve unit includes a valve body,
A first connection part integrally connecting the first flow path and the first communication path part; And
And a second connection portion for integrally connecting the second flow path portion with the second flow path portion. The method according to claim 1,
The opening /
Further comprising a plurality of fluid grooves spaced apart from each other along the circumferential direction and concavely formed to move the fluid. A valve assembly mounted in a mount cup fixed to an upper end of a housing,
A stem housing having a mounting portion having a hollow portion therein and mounted in the mount cup, and a communication passage communicating the hollow portion with the accommodation space;
A valve stem having one side penetrating a central portion of the mount cup and the other side slidably disposed in the hollow portion and having an orifice selectively communicating with the hollow portion by the sliding; And
And an overpressure prevention valve portion communicating with a discharge port spaced apart from a center portion of the mount cup to prevent overpressure in the accommodation space,
The over-
A body having a channel connecting the accommodation space and the outlet;
An opening / closing unit mounted movably along the flow path to open / close the flow path;
A shape memory spring that deforms into a shape set when the internal temperature of the accommodation space rises to a predetermined temperature to press the opening and closing part and open the flow path;
A mounting groove extending in the longitudinal direction from an end of the flow path to the inside of the flow path to mount the opening and closing part and the shape memory spring; And
A mounting cap detachably coupled to an end of the flow path and having a hollow hole therein for communicating the accommodation space with a flow path; And
And a pressing spring for elastically pressing one side of the opening / closing portion so that the opening / closing portion closes the hollow hole of the mounting cap,
The mounting cap includes:
A first portion having a first diameter greater than an inner diameter of the mounting groove to restrict movement of the mounting cap to the inside of the flow path;
A second portion having a second diameter smaller than an inner diameter of the mounting groove, the second portion being received within the mounting groove;
A third portion having a first diameter smaller than the second diameter and inserted into the shape memory spring so that the shape memory spring is mounted; And
And a fixing protrusion formed on one side of the second portion in a circumferential direction and coupled to the mounting groove by interference fit.

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