KR102446106B1 - Aerosol can having overpressure protector and valve assembly thereof - Google Patents

Abstract

The present invention relates to an injector capable of resolving an overpressure state, comprising a housing having an accommodating space formed therein to accommodate the contents and having an upper sealing cap sealing the upper portion of the accommodating space, and the upper sealing cap It is mounted in a mount cup having a through hole in the central part, a mounting part having a hollow part therein and mounted on the mount cup, and an extension pipe having a communication path for communicating the hollow part and the accommodation space and extending from the mounting part A stem housing including a valve spring, and a first member and a second member, comprising a flow path blocking portion disposed in the hollow portion to block the flow path of the contents when overpressure occurs, wherein the first member and the second member are the valve spring is sequentially disposed on the lower side of the valve spring so that an elastic force of

Description

A sprayer capable of relieving overpressure and its valve assembly

The present invention relates to an injector capable of resolving an overpressure state.

In general, an injector refers to a container that allows the content to be sprayed (fluid or gas) to be sprayed to the outside by using internal pressure while sealed inside the housing. Representative examples of such a sprayer include a portable gas container, a spray mosquito repellent, hair spray, a portable aerosol fire extinguisher, a container for a gas lighter, and the like.

In general, an injector includes a housing (can) for containing contents, a mount cup fixed to the upper end of the housing, and a valve assembly fixed to a central protrusion of the mount cup. The valve assembly is configured to maintain a sealed state when the injector is not in use and to allow the contents to flow out only when in use.

However, the injector may reach an overpressure state during use or storage for thermal, mechanical or chemical reasons, and the valve assembly discharges a certain amount of content or is sealed, so when the injector reaches an overpressure state, the injector may reach an overpressure state. malfunction (expansion or deformation, etc.) occurs.

Therefore, in the prior art, a method of adding various structures for discharging the overpressure gas to the outside was used, or a method of blocking the gas using a pin or a ball as in Patent No. 10-1828284 or No. 10-2092499 was used. . However, since these methods use pins or balls, there is a disadvantage in that the manufacturing cost increases. Accordingly, in the present invention, in order to prevent malfunction of the injector, it is intended to propose a new mechanism capable of resolving the overpressure state with a simpler structure.

Registered Patent Publication No. 10-1828284 (2018.02.14. Announcement) Registered Patent Publication No. 10-2092499 (2020.03.23. Announcement)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an injector and a valve assembly thereof capable of relieving overpressure with a simple structure by having an overpressure relieving mechanism different from the prior art.

In particular, it is another object of the present invention to provide an injector with improved reliability for the flow path blocking function.

In order to achieve the above object of the present invention, the injector of the present invention implements a flow path blocking mechanism by using a support structure of a valve spring so as to have a simple structure and high reliability flow path blocking.

More specifically, the injector includes a housing having an accommodating space formed therein to accommodate the contents, a housing having an upper sealing cap sealing an upper portion of the accommodating space, and mounted on the upper sealing cap, a central portion A stem housing having a mount cup having a through hole in it, a mounting part having a hollow part therein and mounted on the mount cup, a communication passage communicating the hollow part and the receiving space, and an extension pipe extending from the mounting part; , a valve stem slidably disposed in the hollow portion and having an orifice selectively communicating with the hollow portion by sliding, a valve spring disposed in the hollow portion to elastically support the valve stem upward, and It has a first member and a second member, and is disposed in the hollow part and includes a flow path blocking part for blocking the flow path of the contents when overpressure occurs, wherein the first member and the second member are such that the elastic force of the valve spring is applied. It is sequentially disposed below the valve spring, and any one of the first member and the second member is deformed by heat at a preset temperature or higher.

In an embodiment, the first member supports the valve spring, and the second member has at least a portion above the preset temperature so that the first member moves to block the flow path when the overpressure occurs. can be melted.

The second member is disposed in the hollow portion, a body portion having an insertion hole into which at least a portion of the first member is inserted, and the body portion protruding from the body portion to support the first member, the preset temperature It has a support part that melts in the above.

The insertion hole of the second member may overlap an opening of the communication passage formed at the bottom of the hollow part.

In an embodiment, the second member is disposed in the hollow portion and has a body portion having an insertion hole into which at least a portion of the first member is inserted, and one end of the body portion supports the first member, , melted above the preset temperature.

In an embodiment, the first member supports the valve spring, the second member has a through hole, is disposed between the first member and an opening of the communication passage, and when overpressure occurs, the through hole It may be melted above the preset temperature so as to block this.

In an embodiment, the first member includes a body portion disposed below the valve spring, and a protrusion formed along the circumference of the body portion to support the valve spring.

The protrusion may be supported by the second member. A closing portion may be formed at a lower side of the body portion to be inserted into the second member and move in a direction to close the opening of the communication passage when the second member is deformed by the heat.

In addition, the present invention is a stem housing having a hollow portion therein and mounted on the mount cup, a communication passage for communicating the hollow portion and the receiving space, and an extension tube extending from the mounting portion, and in the hollow portion A valve stem disposed slidably and having an orifice selectively communicating with the hollow portion by the sliding, a valve spring disposed in the hollow portion to elastically support the valve stem upward, and the contents of the contents when overpressure occurs a flow path blocking unit for blocking the flow path, wherein the flow path blocking unit includes a first member and a second member, and the first member moves as at least a part of the second member is deformed by heat at a predetermined temperature or higher To block the flow path, the second member is formed of a material having a lower melting point than the first member to support the first member, and the first member supports the valve spring. do.

On the other hand, in order to realize the above problem, the present invention proposes a valve assembly. The valve assembly may include the mount cup, a stem housing, a valve stem, a valve spring, and a flow path blocker.

According to the injector and its valve assembly related to the present invention, when the internal temperature of the housing rises above a preset temperature due to overpressure in the injector, thermal deformation occurs at the lower side of the valve spring, and the flow path is blocked. It is possible to solve the overpressure state of the injector and to prevent the occurrence of malfunction due to the overpressure.

In addition, in a structure in which the first member and the second member of the flow path blocker are pressed by the valve spring, a mechanism in which one is melted and the other is displaced is used, and the flow blocking type valve has a simple and compact structure. to implement At this time, since the elastic force of the valve spring is used, a more reliable flow path blocking function can be exhibited. Furthermore, as the flow path blocking part is disposed in the hollow part of the stem housing, the material cost is reduced and manufacturing is easy, so that a flow path blocking type valve suitable for mass production is realized.

1 is a cross-sectional view showing an injector equipped with a valve assembly according to the present invention.
FIG. 2 is a perspective view illustrating a state in which the valve assembly is mounted on the mount cup of FIG. 1A .
3 is an exploded perspective view of the flow path blocking part of FIG. 1 .
FIG. 4 is a cross-sectional view of the valve assembly shown in FIG. 1 ;
5 is an enlarged view of A in FIG. 4 .
6 is a conceptual diagram illustrating an overpressure relief state in the valve assembly of FIG. 4 .
7 is a cross-sectional view showing an injector equipped with a valve assembly according to another embodiment of the present invention.
FIG. 8 is an exploded perspective view of the flow path blocking part of FIG. 7 .
9 is a conceptual diagram illustrating an overpressure relief state in the valve assembly of FIG. 7 .
10 is a cross-sectional view showing an injector equipped with a valve assembly according to another embodiment of the present invention.
11 is an exploded perspective view of the flow path blocking part of FIG. 10 .
12 is a conceptual diagram illustrating an overpressure relief state in the valve assembly of FIG. 10 .
13 is a cross-sectional view showing another embodiment of the present invention.

Hereinafter, an injector and a valve assembly thereof according to the present invention will be described in more detail with reference to the drawings. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted.

1 is a cross-sectional view showing an injector equipped with a valve assembly 100 according to an embodiment of the present invention.

In Figure 1, the middle part of the longitudinal side of the injector is irrelevant to the characteristics of the present invention and it is judged to be unnecessary in explaining the present invention, so it is deleted by two incisions, but a part of the side of the injector is between the two incisions Although omitted, in reality, each side of the injector extends vertically and is connected to each other.

As shown, the housing 10 has a cylindrical shape and an accommodating space 14 therein to accommodate the contents such as a fluid or gas and the injection gas.

The housing 10 includes a body 11 in which an accommodation space 14 is formed, and a lower sealing cap 12 and an upper sealing cap 13 for sealing both ends of the body 11 , respectively. The lower sealing cap 12 may be formed in a curved shape toward the receiving space 14 , thereby expanding the volume of the receiving space 14 when overpressure of a certain level or more is applied to the receiving space 14 . can be deformed.

The upper sealing cap 13 may be coupled to the body 11 to seal the upper portion of the body 11 . The upper sealing cap 13 may form a seaming coupling portion 1301 so that it can be bent or rolled into the mount cup 15 and adhered thereto. The seaming coupling portion is formed along the edge of the mount cup (15). In the injector, the lower end of the upper sealing cap 13 and the body 11 may be combined in a neck-out type. However, the present invention is not necessarily limited thereto, and the body 11 may be coupled to the lower end of the upper sealing cap 13 in a neck-in type. In this case, the body 11 may be formed to extend in a straight line in the longitudinal direction.

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

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, for example, a locking shape 152 to be mounted on a fuel mounting device such as a gas stove, and a protruding part 151 to fix the valve assembly 100 in the center. is provided. However, the locking shape part 152 may not exist or may be formed in a different shape in some cases. For example, a cap having a push button for spraying may be mounted when a cosmetic agent or an insecticide is contained in the housing 10 in another form of the locking shape part 152 .

The mount cup 15 is formed by protruding a locking protrusion 1302 from the lower end of the seaming coupling portion 1301 of the upper sealing cap 13 . The locking protrusion 1302 may be formed as the mount cup 15 is crimped and assembled when the mount cup 15 is combined with the injector accommodating part of the gas range.

On the other hand, the valve assembly 100 according to the present invention is mounted to the fuel loading device is made to flow gas by the user's operation. In addition, the valve assembly 100 is formed to block the flow path under a specific condition in order to solve the case where the overpressure of the accommodation space 14 occurs. Hereinafter, the mechanism of gas outflow and flow path blocking will be described in more detail with reference to FIGS. 2 to 6 together with FIG. 1 above.

2 is a perspective view showing a state in which the valve assembly is mounted on the mount cup of FIG. 1A, FIG. 3 is an exploded perspective view of the flow path blocker of FIG. 1, and FIG. 4 is a cross-sectional view of the valve assembly shown in FIG. 5 is an enlarged view of A in FIG. 4 , and FIG. 6 is a conceptual diagram illustrating an overpressure relief state in the valve assembly of FIG. 4 .

Referring to FIG. 2 , the mount cup 15 has a notch groove 153 on one side of the engaging shape portion 152 so that it can be mounted on an external device capable of mounting an injector, for example, a gas range, a gas burner, etc. is formed The notch groove 153 is disposed toward the upper direction of the injector accommodating portion when the injector is mounted on the injector receiving portion of the external device.

The valve assembly 100 includes a valve stem 110 and a stem housing 120 for injecting the contents filled in the accommodation space 14 to the outside by pressing.

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

A ring-shaped opening/closing member 111 is mounted on the inner surface of the upper end of the protrusion 151 of the mount cup 15 to cover a portion of the through hole 154 .

The valve stem 110 is slidably mounted in the vertical direction on the upper end of the protrusion 151 of the mount cup 15 by the opening/closing member 111 . The upper portion of the valve stem 110 is exposed to the outside of the housing 10 through the central hole and the through hole 154 of the opening and closing member 111 . The lower portion of the valve stem 110 is arranged to be accommodated inside the upper end of the protruding portion 151 of the mount cup 15 . A coupling groove is formed on the side surface of the valve stem 110 along the circumferential direction, and the inner periphery of the opening and closing member 111 is inserted and coupled to the coupling groove, and the valve stem 110 is vertically moved by the opening and closing member 111. It can be supported slidably in the direction.

An exhaust hole 112 is formed in a direct downward direction from the upper end of the valve stem 110 , an orifice 113 is formed between the lower end of the exhaust hole 112 and the coupling groove, and the exhaust hole 112 is an orifice 113 . The accommodating space 14 of the housing 10 may be communicated through the . At this time, the opening and closing member 111 surrounds the coupling groove of the valve stem 110 , and may selectively open and close the orifice 113 by sliding of the valve stem 110 .

The stem housing 120 may include a mounting part 121 and an extension pipe 124 .

In this case, the mounting part 121 has a hollow part 1211 therein, and the extension pipe 124 is a communication passage for communicating the hollow part 1211 and the accommodation space 14 of the housing 10 ( 123) is provided. The hollow part 1211 may selectively communicate with the exhaust hole 112 through the orifice 113 . The hollow portion 1211 and the communication passage 123 may form a passage of the stem housing 120 .

A part of the mounting part 121 is accommodated in the protruding part 151 of the mount cup 15 and has a hollow part 1211 therein, so that the lower part of the valve stem 110 is slidable in the hollow part 1211 . arranged to do At this time, the upper end of the mounting portion 121 is made to support the outer periphery of the opening and closing member (111).

A valve spring 122 is provided inside the mounting part 121 , and the valve spring 122 is configured to elastically support the lower portion of the valve stem 110 . For example, the valve spring 122 is disposed in the hollow portion 1211 to elastically support the valve stem 110 upward.

A communication passage 123 is provided inside the extension tube 124 to communicate the hollow portion 1211 and the accommodation space 14 of the housing 10 through the communication passage 123 .

The extension pipe 124 extends from the mounting part 121 and may be formed in an approximately L-shape. More specifically, the extension pipe 124 is divided into a first extension portion 1241 extending from the mounting portion toward the lower sealing cap and a second extension portion 1242 bent at the first extension portion 1241 . can be In this case, the second extension portion 1242 may be formed in a direction perpendicular to the first extension portion 1241 .

According to this structure, the communication passage 123 includes a first communication passage portion 1231 extending in the same or similar direction as the longitudinal direction of the housing 10 or the sliding direction of the valve stem 110, and the first It may be composed of a second communication passage portion 1232 extending in the lateral direction of the housing 10 from the communication passage portion 1231 . The second communication passage part 1232 may extend in a direction crossing the side surface of the housing 10 . The upper end of the first communication passage portion 1231 communicates with the hollow portion 1211 , and the end of the second communication passage portion 1232 is spaced apart from the upper sealing cap 13 to communicate with the accommodation space 14 . can

Hereinafter, the gas outflow action of the valve assembly 100 will be described with reference to FIG. 5 .

When the injector is mounted to lie in the horizontal direction in the injector receiving part of an external device (gas range or gas burner, etc.), the notch groove 153 of the mount cup 15 faces upward of the injector receiving part and The second communication passage portion 1232 of the stem housing 120 is also disposed to face upward.

In the case of an injector using liquid fuel, the liquid fuel may sink in the gravity direction during use, and the gaseous fuel evaporated into the upper space of the accommodation space 14 based on the imaginary longitudinal center line of the housing 10 is It may flow into the hollow part 1211 through the second communication passage part 1232 and the first communication passage part 1231 .

The valve stem 110 may be pressed in the longitudinal direction of the housing 10 , the valve spring 122 is compressed by the pressing, and the valve stem 110 is slid toward the receiving space 14 . By sliding of the valve stem 110, the inner periphery of the opening and closing member 111 is pushed into the receiving space 14, whereby the orifice 113 is opened, and gaseous fuel in the receiving space 14 is transferred to the stem housing ( It may be injected to the outside through the valve stem 110 in the hollow portion 1211 of the 120). When the pressure is released, the valve spring 122 is elastically restored, and accordingly, the valve stem 110 returns to its original position and injection of the contents can be stopped.

On the other hand, the valve assembly 100 according to the present invention may further include a flow path blocking unit 130 for blocking the flow path of the contents when overpressure occurs in order to relieve the overpressure in the accommodation space 14 . Hereinafter, the flow path blocking unit 130 will be described in more detail with reference to FIGS. 3 and 6 along with the previous FIGS. 4 and 5 .

The injector according to the present invention may reach an overpressure state for thermal, mechanical or chemical reasons during use or storage. The stem housing 120 may be closed so that it does not occur.

The flow path blocking part 130 may be disposed in the hollow part 1211 of the stem housing 120 to close one point of the passage through which the gas is discharged to the outside. For example, the flow path blocking part may be formed to be pressed by the valve spring 122 at the bottom of the hollow part 1211 . A bottom of the hollow part 1211 may correspond to an end of the hollow part 1211 under the valve spring 122 , and an opening 123a of the communication passage 123 may be disposed. At least a portion of the flow path blocking part 130 is melted or deformed at a preset temperature, and is formed to close the opening 123a of the communication flow path 123 by the elastic force of the valve spring 122 .

As illustrated, the flow path blocking unit 130 may include a first member 131 and a second member 132 .

At this time, the first member 131 and the second member 132 are sequentially disposed below the valve spring 122 so that the elastic force of the valve spring 122 is applied, and the first member 131 and any one of the second member 132 may be deformed by heat at a predetermined temperature or higher.

For example, as at least a portion of the second member 132 is deformed by heat above a preset temperature, the first member 131 may move to block the flow path. To this end, the second member 132 is formed of a material having a lower melting point than the first member 131 to support the first member 131 , and the first member 131 is the valve spring 122 . ) to support In addition, at least a portion of the second member 132 may be melted at a temperature higher than the preset temperature so that the first member 131 moves to block the flow path when the overpressure occurs.

As a more specific example, the first member 131 may be a support member supporting the valve spring 122 , and the second member 132 may be a molten support member supporting the support member.

4 and 6 , since the pressure increases when the temperature of the gas in the housing 10 rises, a limit temperature at which the gas pressure does not reach a specific pressure, for example, the explosion pressure may be set. For example, when the housing is overheated by radiant heat when using the overheating plate, the limit temperature may be set in the range of about 80 degrees to 150 degrees. When this temperature range is reached, the support member is pressed down more easily by the spring load supporting the valve stem as the molten support member approaches the melting or strain point. Using this mechanism, the support member blocks the central flow path of the stem housing to block the discharged gas.

At this time, the first member 131 can support the valve spring 122 without being deformed or melted from the minimum point (for example 80 degrees) to the maximum point (for example 150 degrees) of the limit temperature. It consists of 　plastic resins, 　metals, or other solid materials.

3 and 4 , the first member 131 may include a body part 1311 and a protrusion part 1312 . The body portion 1311 is a portion disposed below the valve spring 122 and may be formed in a cylindrical shape.

A downwardly recessed recess groove 1311a may be formed at one end of the body portion 1311 , and the protrusion portion 1312 may be formed to protrude along the circumference of the body portion 1311 . Through this structure, the body part 1311 is inserted into the valve spring 122 , and the protrusion part 1312 supports the lower end of the valve spring 122 . In this case, the protrusion 1312 may be supported by the second member 132 . Specifically, one surface of the protrusion 1312 may contact and support the valve spring 122 , and the other surface may be contact-supported by at least a portion of the second member 132 .

As shown, the lower side of the body portion 1311 is inserted into the second member 132, and when the second member 132 is deformed by the heat, the opening 123a of the communication passage 123 is closed. A closing portion 1313 that moves in a direction to be formed may be formed. The closing part 1313 may have a cylindrical shape having a smaller diameter than the body part 1311 , and is fitted to the opening 123a of the communication passage 123 to block the outflow of gas. It may be formed in a corresponding size.

When the second member 132 is deformed or melted so that the first member 131 is inserted into the opening 123a of the communication passage 123 , the flow passage is blocked and the consumer cannot reuse the sprayer.

The second member 132 has the property of melting or softening at the limit temperature (between 80 and 150 degrees), so that when the gas in the housing is heated from the outside and the pressure and temperature rise, the valve spring 122 It is made of a material that is easily deformed by the elastic force of As such, the second member 132 may be formed of a material different from that of the first member 131 and having a lower melting point than that of the first member 131 .

As an example, the second member 132 may be formed of, for example, a material having a melting point of about 100 to 120°C. At this time, in this example, 100 degrees is defined as a preset temperature, and the second member 132 may be referred to as a material that melts at about 100 degrees or more.

To this end, the second member 132 may include a polyethylene (PE) material having a melting temperature of about 103° C. and a hard material having a higher melting point than the polyethylene. The hard material having a higher melting point than polyethylene may be, for example, a PP (polypropylene) material or a PS (polystyrene, polystyrene) material.

The polyethylene (PE) material and the hard material are mixed in a predetermined ratio, and as an example, the polyethylene (PE) material and the hard material may be mixed in a ratio of 7:3. By mixing the materials described above, the second member 132 may have a melting point of about 110°C.

From a structural point of view, the second member 132 may include a body portion 1321 and a support portion 1322 .

The body portion 1321 may be disposed in the hollow portion 1211 and may include an insertion hole 1321a into which at least a portion of the first member 131 is inserted. The insertion hole 1321a of the second member 132 overlaps the opening 123a of the communication passage 123 formed at the bottom of the hollow portion 1211 , and the closing portion of the first member 131 . It may have a larger inner diameter than the closing portion 1313 to enable movement of the 1313 . Accordingly, in this example, the inner diameter of the insertion hole 1321a may be larger than that of the opening 123a of the communication passage 123 .

The support portion 1322 protrudes from the body portion 1321 to support the first member 131 and is made to melt at a temperature higher than the preset temperature.

The support portion 1322 includes a plurality of support protrusions 1322a and 1322b spaced apart from each other along the circumference of the body 1321, and the support protrusions 1322a and 1322b have the valve spring at the preset temperature or higher. It is formed to be compressed and deformed by the elastic force of (122).

Meanwhile, by the grooves 1322c formed between the plurality of support protrusions 1322a and 1322b, the flow of gas may be facilitated when filling and discharging gas.

Further, a seating protrusion 1323 seated on the floor in the hollow portion 1211 may be formed on a lower surface of the body portion 1321 . A plurality of the seating protrusions 1323 may be provided to be spaced apart from each other along the circumference of the body 1321 . The grooves 1324 formed between the seating protrusions 1323 may facilitate the flow of gas in or around the opening 123a of the communication passage 123 and the bottom of the housing.

In addition, the seating protrusion 1323 may be formed to have the same height, number, and spacing as the plurality of support protrusions 1322a and 1322b. According to this structure, it is possible to form the same structure of the second member 132 even when assembled in an upside down state, and it is possible to improve productivity because assembly is simple.

On the other hand, the flow path blocking part of the present invention may be modified in various forms. Hereinafter, with reference to FIGS. 7 to 9 , an injector having a flow path blocking unit 230 according to another embodiment of the present invention will be described.

7 and 9, the injector includes a housing 10, a mount cup 15, a stem housing 220, a valve stem 210, a valve spring 222, and a flow path blocker 230. .

On the other hand, the functions or materials of the first member 231 and the second member 232 of the illustrated flow path blocking unit 230 are described with reference to FIGS. 1 to 6, the first member 131 and the second member ( 132) and may be made to have the same or similar characteristics. Therefore, the description of the function or material is replaced with the above description. In contrast, in this example, the structures of the first member 231 and the second member 232 may be modified from the above-described examples.

The first member 231 may include a body portion 2311 and a protrusion portion 2312 .

The body portion 2311 is a portion disposed below the valve spring 222 and may be formed in a cylindrical shape.

A downwardly recessed recess groove is formed at one end of the body part 2311 , and the protrusion part 2312 may be formed to protrude along the circumference of the body part 2311 . In this case, the protrusion 2312 may be supported by the second member 232 . Specifically, one surface of the protrusion 2312 may contact and support the valve spring 222 , and the other surface may be contact-supported by at least a portion of the second member 232 .

As illustrated, a plurality of grooves 2312a may be sequentially disposed along the periphery of the protrusion 2312 in the protrusion 2312 . Due to the grooves 2312a, the flow of gas in the hollow part 2211 may occur more smoothly.

Further, the lower side of the body part 2311 is inserted into the second member 232, and when the second member 232 is deformed by the heat, the opening 223a of the communication passage 223 is closed. A closing portion 2313 that moves to may be formed. The closing part 2313 may be formed in a cylindrical shape having a smaller diameter than the body part 2311, and is fitted to the opening 223a of the communication passage 223 to block the outflow of gas. It may be formed in a corresponding size.

In this case, a plurality of grooves 2313a may be formed on the outer periphery of the closing part 2313 . The groove 2313a has a shape extending in the longitudinal direction of the closing part 2313 and may be disposed in the insertion hole 2321a of the second member 232 . Through this, the flow of gas through the insertion hole 2321a of the second member 232 may occur more smoothly.

Referring to FIG. 8 , the second member 232 is disposed in the hollow portion 2211 and has a body portion 2321 having an insertion hole 2321a into which at least a portion of the first member 231 is inserted. ) is provided. At this time, one end of the body part 2321 supports the first member 231 and is made to melt at a temperature higher than the preset temperature. As a more specific example, the second member 232 has a simple structure having an insertion hole 2321a inside the cylindrical body.

Although such a simple structure, the body part 2321 is melted or softened at a temperature higher than the preset temperature and is compressed and deformed by the elastic force of the valve spring 222, through which the first member 231, especially the closing part ( 2313) can move downwards. By this mechanism, the flow path blocking unit blocks the flow path of the stem housing at a temperature higher than a preset temperature, thereby relieving the overpressure.

As described above, in the present invention, in the structure in which the first member 231 and the second member 232 of the flow path blocker are pressed by the valve spring, one is melted and the other is displaced by using a mechanism, and a compact structure to implement a flow path blocking valve.

On the other hand, the flow path blocking portion of the present invention may be modified in other forms. Hereinafter, with reference to FIGS. 10 to 12, an injector having a flow path blocking part 330 according to another embodiment of the present invention will be described.

10 and 12, the injector includes a housing 10, a mount cup 15, a stem housing 320, a valve stem 310, a valve spring 322, and a flow path blocker 330. .

On the other hand, the material of the first member 331 and the second member 332 of the illustrated flow path blocking portion 330 has the same or similar characteristics as those of the first member and the second member described with reference to FIGS. 1 to 9 . can be made to have Accordingly, the description of the material is replaced with the above description. In contrast, in this example, the structures and functions of the first member 331 and the second member 332 may be modified from the above-described examples.

The first member 331 may include a body portion 3311 and a protrusion portion 3312 .

The body portion 3311 is a portion disposed below the valve spring 322 and may be formed in a cylindrical shape.

The protrusion 3312 may be formed to protrude along the circumference of the body 3311 . In this case, the protrusion 3312 may be supported by the second member 332 . Specifically, one surface of the protrusion 3312 may contact and support the valve spring 322 , and the other surface may be contact-supported by at least a portion of the second member 332 .

The second member 332 is disposed between the first member 331 and the opening 323a of the communication passage 323 . At least one of the upper and lower portions of the second member 332 is formed with concave-convex protrusions and grooves to facilitate the flow of gas. The protrusions may be arranged at equal intervals at a predetermined height.

In addition, the protrusions and grooves may be formed to have the same height, number, and spacing at the upper and lower portions of the second member 332 . According to this structure, the same structure of the second member 332 can be formed even when assembled upside down, so that assembly can be very easy.

Referring to FIG. 12 , a through hole 3325 is formed in the body portion 3321 of the second member 332 , and the through hole 3325 is blocked when overpressure occurs. have.

The second member 332 may be softened or thermally deformed above the preset temperature, and may be compressively deformed by the elastic force of the valve spring 322 . As such, when the preset temperature is reached, the body portion 3321 is melted or deformed by heat and spring load, thereby blocking the communication channel.

On the other hand, the flow path blocker of the present invention may be provided with an additional mechanism for facilitating the flow of gas in a steady state. 13 is a cross-sectional view showing another embodiment of the present invention.

According to the illustration, a stepped portion 425 is formed at the bottom of the hollow portion of the stem housing 420 . In this case, the upper surface of the stepped portion 425 may be the bottom of the hollow portion. An intermediate passage having an intermediate inner diameter may be formed between the hollow portion in which the valve spring 422 is accommodated by the stepped portion 425 and the communication passage.

A second member 432 may be disposed on the stepped portion 425 , and the second member is inserted into the cylindrical body portion similarly to the second member 432 of the example described with reference to FIGS. 7 to 9 . It has a simple structure with a hole.

The first member 431 is disposed between the valve spring 422 and the second member 432 to contact both sides, respectively. In addition, the closing part of the first member 431 penetrates the insertion hole of the second member 432 to be inserted into the intermediate passage. The lower end of the first member 431 may be spaced apart from the opening 423a of the communication passage 423 to have a predetermined gap.

As shown, a plurality of grooves 426 may be formed on the inner circumferential surface of the hollow portion. The plurality of grooves 426 may also be formed in the stepped portion 425 to extend to the opening 423a of the communication passage 423 . As described above, grooves 426 at regular intervals are formed on the inner circumferential surface and the bottom of the hollow part of the stem housing, so that the gas flow in the flow path in the valve can be smoothed.

The above-described injector capable of relieving overpressure and its valve assembly use a mechanism in which the components of the flow path blocker are pressed by the valve spring, and one is melted and the other is displaced. The structure realizes a flow path blocking type valve.

The injector and its valve assembly described above are not limited to the configuration and method of the embodiments described above, but all or part of each embodiment may be selectively combined so that various modifications can be made. can

10: housing 11: body
12: lower sealing cap 13: upper sealing cap
14: accommodation space 15: mount cup
151: protruding part 152: engaging shape part
153: notch groove 154: through hole
100: valve assembly 110: valve stem
112: exhaust hole 113: orifice
120: stem housing 121: mounting part
1211: hollow part 122: valve spring
123: communication channel 1231: first communication channel part
1232: second communication passage 124: extension pipe
1241: first extended part 1242: second extended part
130: flow path blocking part 131: first member
132: second member

Claims (11)

a housing having an accommodating space formed therein to accommodate the contents and having an upper sealing cap sealing an upper portion of the accommodating space;
a mount cup mounted on the upper sealing cap and having a through hole in the central portion;
a stem housing having a mounting portion having a hollow portion therein and mounted on the mount cup, a communication passage communicating the hollow portion and the receiving space, and an extension tube extending from the mounting portion;
a valve stem slidably disposed in the hollow part and having an orifice selectively communicating with the hollow part by the sliding;
a valve spring disposed in the hollow portion to elastically support the valve stem upward; and
It has a first member and a second member, and is disposed in the hollow part and includes a flow path blocking part for blocking the flow path of the contents when overpressure occurs,
The first member and the second member are sequentially disposed under the valve spring so that the elastic force of the valve spring is applied,
The first member supports the valve spring,
An insertion hole into which at least a portion of the first member is inserted is formed in the second member, and at least a portion is melted at a temperature higher than a preset temperature to block the flow path by moving the first member when the overpressure occurs spraying machine with
delete According to claim 1,
The second member is
a body portion disposed in the hollow portion and having the insertion hole; and
The injector, characterized in that it protrudes from the body part to support the first member, and to have a support part that is melted at a temperature higher than the preset temperature. 4. The method of claim 3,
The insertion hole of the second member is an injection device, characterized in that overlapping the opening of the communication passage formed at the bottom of the hollow portion. According to claim 1,
The second member is
It is disposed in the hollow portion and includes a body portion having the insertion hole,
One end of the body part supports the first member, and is melted above the preset temperature. According to claim 1,
The first member supports the valve spring,
The second member is
It has a through hole and is disposed between the first member and the opening of the communication passage,
Injector, characterized in that melted above the preset temperature so that the through-hole is blocked when overpressure occurs. According to claim 1,
the first member
a body portion disposed below the valve spring; and
and a protrusion formed along the circumference of the body to support the valve spring. 8. The method of claim 7,
The protrusion is an injector, characterized in that supported by the second member. 8. The method of claim 7,
Injector, characterized in that the lower side of the body portion is inserted into the second member, characterized in that when the second member is deformed by heat, a closing portion that moves in a direction to close the opening of the communication passage is formed. a housing in which an accommodation space for accommodating the contents is formed;
a mount cup disposed on the upper side of the housing and having a through hole in the central portion;
a stem housing having a mounting portion having a hollow portion therein and mounted on the mount cup, a communication passage communicating the hollow portion and the receiving space, and an extension tube extending from the mounting portion;
a valve stem slidably disposed in the hollow part and having an orifice selectively communicating with the hollow part by the sliding;
a valve spring disposed in the hollow portion to elastically support the valve stem upward; and
It includes a flow path blocking unit that blocks the flow path of the contents when overpressure occurs,
The flow path blocking unit includes a first member and a second member,
The second member is formed of a material having a lower melting point than the first member so that the first member moves and blocks the flow path as at least a portion of the second member is deformed by heat at a predetermined temperature or higher. Supporting the first member, the first member supports the valve spring,
An insertion hole into which at least a portion of the first member is inserted is formed in the second member, and when the overpressure occurs, the first member moves to block the flow path, at least a portion of which is melted above the preset temperature Features a sprayer. In the valve assembly mounted on the mount cup fixed to the upper end of the housing in which the receiving space for accommodating the contents is formed,
a stem housing having a mounting portion having a hollow portion therein and mounted on the mount cup, a communication passage communicating the hollow portion and the receiving space, and an extension tube extending from the mounting portion;
a valve stem having an orifice having one side passing through the central portion of the mount cup and the other side being slidably disposed in the hollow portion, and selectively communicating with the hollow portion by sliding;
a valve spring disposed in the hollow portion to elastically support the valve stem upward; and
It has a first member and a second member, and is disposed in the hollow part and includes a flow path blocking part for blocking the flow path of the contents when overpressure occurs,
The first member and the second member are sequentially disposed under the valve spring so that the elastic force of the valve spring is applied,
The first member supports the valve spring,
An insertion hole into which at least a portion of the first member is inserted is formed in the second member, and at least a portion is melted at a temperature higher than a preset temperature to block the flow path by moving the first member when the overpressure occurs valve assembly with

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