KR101895583B1 - Aerosol can having overpressure protector and valve assembly thereof - Google Patents

Abstract

The present invention relates to an overpressure-resolvable spray container including an upper sealing cap sealing an upper portion, a housing having an inner accommodating space for content accommodation, a through hole mounted in the upper sealing cap and formed in a middle portion, a mount cup having a discharge port spaced apart from the through hole, a mounting portion mounted in the mount cup and having a hollow part therein, a stem housing provided with a communication flow path for communication between the hollow part and the accommodating space, a valve stem having one side passing through the through hole and the other side slidably disposed at the hollow part and provided with an orifice selectively communicating with the hollow part by the sliding, and a flow path blocking valve portion formed to block an inflow port of the communication flow path. The flow path blocking valve portion includes a body inserted into the inflow port of the communication flow path, a closing member accommodated in the inner peripheral surface of the body and engaged with an engagement portion provided in the body, and a shape memory alloy disposed in the inner peripheral surface of the body and applying an external force to the engagement portion by being deformed in shape when the internal temperature of the accommodating space rises to or above a preset temperature. The closing member is disengaged when the engagement portion is expanded by the external force. The inflow port of the communication flow path is closed by the disengagement.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a distributor capable of over-

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.

Such malfunction of the distributor may lead to dangerous situation such as explosion of the distributor. Conventionally, a method of adding various structures for discharging the overpressure gas to the outside has been used. However, these structures have a problem in that a large amount of overpressure gas is released in a moment, resulting in a risk of other kinds of safety accidents.

In order to prevent malfunction of the distributor, the present invention proposes a structure and mechanism capable of preventing the overflow of the gas from the distributor.

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

It is still another object of the present invention to prevent the risk of a safety accident by preventing the gas in the distributor from leaking to the outside.

According to the present invention, there is provided an electronic device comprising: an upper sealing cap for sealing an upper portion; a housing having a housing space therein for housing contents; a through hole formed in the central portion; A stem housing having a mounting cup having a hollow portion and a communication portion for connecting the hollow portion to the receiving space, and a stem housing having one side thereof penetrating the through hole, And the other side is slidably disposed in the hollow portion and includes a valve stem having an orifice selectively communicating with the hollow portion by the sliding and a flow shutoff valve portion configured to block the inlet port of the communication flow path, The shut-off valve unit includes a body inserted into an inlet port of the communication passage and a body accommodated in the body, A shape memory alloy which is disposed inside the body and deforms in shape when the internal temperature of the accommodation space rises above a predetermined temperature to apply an external force to the inner circumferential surface of the body, Wherein when the latching portion is bent by the external force, the latching of the closing member is released and the closing member is moved toward the inlet port of the communication channel so as to close the inlet port of the communication channel by the release of the latching .

In one embodiment, the body is characterized in that at least a part of the inner circumferential surface has a curved shape toward the center of the inner circumferential surface so that the closure member is engaged.

In one embodiment, the body is characterized in that one side of the inner circumferential surface is connected to the inlet of the communication passage so that the closing member reaches the inlet, and the other side is connected to the accommodation space.

In one embodiment, the shape memory alloy is deformed so as to apply an external force in a direction away from the center of the inner peripheral surface.

In one embodiment, the latching portion is disposed at one end adjacent to the inlet of the communication passage.

In one embodiment, the shape memory alloy is disposed at the other end located opposite to the one end adjacent to the inlet of the communication passage so that the closing member is disposed between the retaining portion and the shape memory alloy .

In one embodiment, the portion in which the flow path shutoff valve portion is inserted in the communication passage is arranged such that when the distributor is mounted on the external device, the closing member is moved in the gravity direction so that the closing member moves in the gravity direction .

In one embodiment, the flow path shutoff valve portion is circumferentially spaced along the outer circumferential surface of the body so that at least a part of the body is bent by the shape memory alloy, and a plurality of grooves formed concavely in the radial direction on the outer circumferential surface .

In one embodiment, the shape memory alloy is an annular shape in which both ends of the shape memory alloy are spaced apart from each other when the internal temperature of the accommodation space rises above a predetermined temperature.

A valve assembly mounted on a mount cup fixed to an upper end of a housing according to the present invention, the valve assembly comprising: a mounting portion having a hollow portion therein and mounted to the mount cup; and a stem having a communication passage communicating the hollow portion and the accommodation space A valve stem having an opening communicating with the hollow portion by sliding the housing stem and a valve stem having one side penetrating the center portion of the mount cup and the other side slidably disposed in the hollow portion, And the flow path shutoff valve portion is inserted into the inlet port of the communication flow path, and is received in the inside of the body, and is engaged with the engagement portion provided in the body, And an internal temperature of the accommodating space And a shape memory alloy which deforms in shape when the temperature rises above a predetermined temperature to apply an external force to the inner circumferential surface of the body, and the engagement of the closure member is released when the engagement portion is bent by the external force, And moves toward the inlet port of the communication passage so as to close the inlet port of the communication passage by releasing the engagement.

According to the distributor and its valve assembly relating to the present invention, the shape memory alloy, which is provided on the communication passage of the stem housing, and which is deformed when the temperature reaches the set temperature in response to the internal temperature of the housing, When the temperature of the housing reaches the set temperature, the overflow of the distributor can be eliminated by closing the communication flow path so that gas does not flow on the communication flow path of the stem housing due to the deformation of the shape memory alloy, It is possible to prevent a malfunction caused by the operation.

Further, the flow path shutoff valve unit according to the present invention is formed such that the spherical type closing member is allowed to drop freely toward the communication flow path, thereby making it possible to operate a more accurate shutoff mechanism.

In addition, the flow path shutoff valve unit according to the present invention can prevent the explosion and the fire from occurring by not allowing the gas inside the distributor to flow out.

1 is a sectional view showing a distributor equipped with a valve assembly according to 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.
6 is a perspective view showing the flow path shutoff valve unit.
7 is a perspective view showing a shape memory alloy to be mounted on the flow path shutoff valve portion.
FIG. 8 is a conceptual diagram showing a state in which a distributor according to the present invention is installed in a distributor accommodating portion.
Figs. 9 and 10 are enlarged views of a portion C in Fig. 4, and are conceptual diagrams showing an operation mechanism for overpressure relief action when an overpressure occurs in a receiving space.

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.

FIG. 1A is a cross-sectional view showing a distributor equipped with a valve assembly according to an embodiment of the present invention. FIG. 1B is a cross-sectional view illustrating a distributor equipped with a valve assembly according to another embodiment of the present invention.

In FIGS. 1A and 1B, the intermediate portion of the lengthwise side of the distributor is independent of the features of the present invention, and is deemed to be 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.

Referring to FIG. 1A, the housing 10 is cylindrical and has a receiving space 14 therein to receive 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 enlarged when the receiving space 14 is overpressurized to a certain level or more. It can be deformed.

The upper sealing cap 13 can be engaged with the body 11 to seal the upper portion of the body 11. [ The upper sealing cap 13 may form a seaming engagement portion 1301 so that the upper sealing cap 13 can bend or be inserted into the mount cup 15 so as to abut against each other. The seaming engagement portion is formed along the edge of the mount cup 15. At the lower end of the upper sealing cap 13, the body 11 can be coupled in a neck-in type. In this case, the body 11 may be formed to extend straight in the longitudinal direction.

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. 1A, 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 range and has a protruding portion 151 at its 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.

The mount cup 15 is formed by protruding a locking protrusion 1302 at the lower end of the seaming part 1301 of the upper sealing cap 13. The engaging protrusion 1302 can be formed as the mount cup 15 is clipped and assembled when engaging with the distributor receiving portion of the gas range.

Referring to FIG. 1B, the dispenser according to another embodiment of the present invention may be combined with the lower end of the upper sealing cap 13 and the body 11 in a neck-out manner. In the following description, for convenience of explanation, a method of operating the valve assembly 100 will be described with reference to the distributor 100 shown in FIG. 1A, but the present invention is not limited thereto and may be applied to the distributor 100 shown in FIG. Will be apparent to those skilled in the art.

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.

Referring to FIG. 2, the mount cup 15 is formed with a notch groove 153 at one side of the latching portion 152 so as to be mounted on a gas range (or an external device capable of mounting a distributor). The notch groove 153 is disposed toward the upward direction of the distributor receiving portion when the distributor is mounted in the distributor receiving portion of the gas range.

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 arranged to be received inside the upper end of the protruding portion 151 of the mount cup 15. 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 communication passage 123 is provided in the stem housing 120 so that the hollow portion 1211 communicates with the accommodation space 14 of the housing 10 through the communication passage 123.

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 110 and a second communication passage portion 1231 extending from the first communication passage portion 1231 And a second communication passage portion 1232 extending in the lateral direction of the housing 10. [ 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 accommodating portion and the stem housing (not shown) The second communication passage portion 1232 of the second communication passage 120 is also directed 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 receiving space 14 with respect to the imaginary longitudinal center line of the housing 10 And may be introduced into the hollow portion 1211 through the second 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.

The valve assembly 100 according to the present invention may further include a flow shutoff valve 130 configured to shut off the inlet port of the communication passage of the stem housing to overcome the overpressure of the accommodation space 14. [ Hereinafter, with reference to Figs. 6 to 9, the flow path shutoff valve unit will be described in detail.

Fig. 6 is a perspective view of the flow path shutoff valve portion, and Fig. 7 is a perspective view showing the shape memory alloy 134 mounted inside the flow path shutoff valve portion.

Referring to FIGS. 1 to 4, the valve assembly 100 includes a flow-shutoff valve portion 130 to prevent overpressure inside the accommodation space 14.

6, the flow path shutoff valve unit 130 is inserted in parallel with the communication pathway 123 of the stem housing 120 to close a point of a path through which the gas in the accommodation space 14 is discharged to the outside .

When the distributor is attached to the external device, the portion in which the flow path shutoff valve portion 130 is inserted in the communication pathway 123 is moved in the gravity direction so that the closing member 133 is moved in the gravity direction Or may be a deployed portion.

Specifically, when the dispenser is mounted so as to lie horizontally in the dispenser accommodating portion of the gas range (or the external apparatus), the notch groove 153 of the mount cup 15 is divided into the notches 153 And the second communication flow path portion 1232 of the stem housing 120 is also directed upward. At this time, the flow path shutoff valve part 130 may be inserted into the second communication flow path part 1232 arranged so as to face upward (i.e., gravity direction). Therefore, the flow path shutoff valve unit 130 is disposed in the gravity direction, and the closure member 133 located inside the flow path shutoff valve unit 130 can be moved in the gravity direction toward the inlet by gravity when the closure member is released.

The flow path shutoff valve unit 130 includes a body 131, a closing member 133, and a shape memory alloy 134.

One end of the body 131 is connected to the communication passage 123 and the other side of the body 131 is connected to the accommodation space 14. The contents of the accommodation space 14 pass through the flow passage shutoff valve 130 , And can be selectively discharged to the outside of the housing (10).

The outer diameter of the body 131 may have a size corresponding to an inner diameter of the communication passage 123 to be fitted into the communication passage 123. At least a part of the outer circumferential surface of the body 131 may have a plurality of fluid grooves 131a so that the fluid can move. The contents in the accommodation space 14 can be moved to the communication passage 123 of the stem housing 120 through the plurality of fluid grooves 131a.

At least a part of the inner circumferential surface of the body 131 may include a latching portion 132 for latching the closing member 133. The locking part 132 may have a shape in which at least a part of the inner circumferential surface is curved toward the center of the inside of the body 131.

The stopper 132 may be located on the inner circumferential surface adjacent to the inlet of the communication passage 123 to prevent the closing member 133 from closing the inlet port of the communication passage 123. Therefore, the engaging portion 132 can restrict the movement of the closing member 133 so that the closing member 133 can not block the inlet port of the communication channel 123 unless an external force is applied.

The locking part 132 may have a curved shape protruding in a round shape so as to allow the closing member 133 to move smoothly. Meanwhile, the shape of the latching part 132 may be variously shaped such as a trapezoidal shape or a triangular shape in addition to a round shape.

The body 131 may further include a plurality of grooves 135 on at least a part of the outer circumferential surface so that the body 131 may be bent, bent, or turned by an external force applied by the shape memory alloy 134. The plurality of grooves 135 may be spaced circumferentially along the outer circumferential surface of the body 131. Further, it may be formed concavely in the radial direction on the outer circumferential surface, and may extend along the longitudinal direction of the body 131.

The outer circumferential surface 136 of the body 131 may be tilted away from the inner center of the body when an external force is applied by the shape memory alloy 134. Therefore, the flow path shutoff valve portion 130 can be bent by the pressure applied to the inner circumferential surface.

The closing member 133 is disposed inside the body 131 and can be formed to be movable inside. Specifically, when the flow path shutoff valve portion 130 is disposed in the gravity direction, the closing member 133 can freely fall in the gravity direction.

If the external force is not applied to the inner circumferential surface of the body 131, the closing member 133 may be restricted by the fastening portion 132 to restrict movement. Thus, the closing member 133 can not reach the inlet port of the communication channel 123, so that the gas in the receiving portion 14 flows into the communication channel 123.

Conversely, when the external force is applied to the inner peripheral surface of the body 131, the closure member 133 is caught by the catching portion 132 and can freely fall in the gravity direction. The closure member 133 can be moved toward the inlet port of the communication channel 123. Therefore, the communication passage 123 can be closed at the inlet.

The closure member 133 may be a spherical ball or steel ball. In this case, the diameter of the closing member 133 is set to be larger than the diameter of the inlet port of the communication channel 123 so as to close the inlet port of the communication channel 123 without entering the inside of the communication channel 123 . Therefore, the closing member 133 can effectively block the inlet port of the communication channel 123. It is apparent to those skilled in the art that the shape of the closing member 133 may be formed in a polygonal shape that can block the inlet port of the communication channel in addition to the spherical shape.

7, the shape memory alloy 134 is disposed inside the body 131 and may be formed to apply an external force to the inner peripheral surface. More specifically, the shape memory alloy 134 may be attached to the inner circumferential surface or may be disposed adjacent to the inner circumferential surface so that the shape of the shape memory alloy 134 is deformed when the internal temperature of the accommodation space 14 rises above a predetermined temperature and applies an external force to the inner circumferential surface .

The external force is a force applied in a direction away from the center of the inner peripheral surface. When an external force is applied to the inner peripheral surface, at least a part of the body 131 can be bent.

The shape memory alloy 134 may have an annular shape or a C shape. At this time, both ends of the shape memory alloy 134 are cut so that they can spread apart when the internal temperature of the accommodation space rises above a predetermined temperature. When the shape memory alloy 134 reaches the set temperature, the entire volume expands when both the cut ends are opened, thereby pressing the inner peripheral surface of the body 131.

The shape memory alloy 134 may be disposed in a direction opposite to the direction in which the closing member 133 freely falls so that the closing member 133 is not engaged. That is, the shape memory alloy 134 may be disposed at the other end located opposite to the one end adjacent to the inlet of the communication passage 123. Thus, the closure member 133 may be positioned between the engagement portion 132 and the shape memory alloy 134.

The structure of the flow path shutoff valve unit 130 according to the present invention has been described above. Hereinafter, an operation in which the flow path shutoff valve unit 130 cuts off the gas will be described with reference to FIGS. 8 and 10. FIG.

The distributor in accordance with the present invention may reach overpressure state for thermal, mechanical or chemical reasons during use or storage. In this case, the flow shutoff valve unit 130 may be configured such that the contents in the housing space 14 of the housing 10 The stem housing 120 may be closed to prevent leakage.

8, the notch groove 153 of the mount cup 15 is formed in the upper part of the distributor accommodating portion of the gas range (or the external device) And the second communication flow path portion 1232 of the headed stem housing 120 is also directed upward. Further, the flow path shutoff valve portion 130 inserted in the second communication flow path portion 1232 is also arranged to face upward.

As the flow path shutoff valve part 130 is arranged in the upward direction, the closing member 133 located inside the flow path shutoff valve part 130 moves downward due to gravity. While the closing member 133 is moving downward, it is caught by the latching part 132 of the flow-path shutoff valve part 130, so that the movement of the closing member 133 can be stopped.

9, the closing member 133 is caught by the engagement portion 132 and does not reach the inlet port of the communication flow path 123, and the flow path shutoff valve portion 130). Therefore, the contents of the accommodation space 14 can be moved to the stem housing 120 through the passage shutoff valve part 130.

10, when the shape memory alloy 134 of the flow path shutoff valve part 130 reaches the set temperature, the shape memory alloy 134 is deformed in response to the temperature of the accommodation space 14 and both ends thereof are opened. The set temperature at which the shape memory alloy 134 is deformed may be preferably between 70 degrees and 90 degrees.

When the set temperature is reached, an external force is applied to the inner circumferential surface of the flow path shut-off valve part 130 due to the shape deformation of the shape memory alloy 134, so that at least a part of the inner circumferential surface of the flow path shut- It can be bent.

By the warping of at least a part of the inner circumferential surface, the engagement of the closure member 133 which has been caught by the engaging portion 132 of the inner circumferential surface can be released. When the engagement is released, the closing member 133 freely falls along the inner circumferential surface and reaches the inlet of the communication passage 123. Therefore, the inlet of the communication flow path 123 is closed. As a result, the contents of the accommodation space 14 are blocked from flowing into the communication channel 123. Accordingly, the flow path shutoff valve unit 130 prevents an additional pressure rise in the accommodation space 14, thereby preventing an explosion or the occurrence of a second fire.

According to the distributor and its valve assembly relating to the present invention, the shape memory alloy, which is provided on the communication passage of the stem housing, and which is deformed when the temperature reaches the set temperature in response to the internal temperature of the housing, When the temperature of the housing reaches the set temperature, the overflow of the distributor can be eliminated by closing the communication flow path so that gas does not flow on the communication flow path of the stem housing due to the deformation of the shape memory alloy, It is possible to prevent a malfunction caused by the operation.

Further, the flow path shutoff valve unit according to the present invention is formed such that the spherical type closing member is allowed to drop freely toward the communication flow path, thereby making it possible to operate a more accurate shutoff mechanism.

Further, the flow path shutoff valve unit according to the present invention does not allow the gas inside the distributor to flow out, thereby preventing a risk of a safety accident in advance.

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
100: valve assembly
110: valve stem 111: opening / closing member
112: exhaust hole 113: orifice
120: stem housing 121:
1211: hollow part 122: valve spring
123: communication channel 1231: first communication channel portion
1232: second communicating flow path portion 130: flow path shutoff valve portion
131: body 132:
133: closing member 134: shape memory alloy

Claims (10)

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;
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 a flow-shutoff valve portion configured to shut off an inlet port of the communication passage,
The flow-
A body inserted into an inlet port of the communication passage;
A closure member housed inside the body, the closure member being engaged with a latch provided on the body;
And a shape memory alloy disposed inside the body and deforming in shape when an internal temperature of the accommodation space rises above a predetermined temperature to apply an external force to the inner circumferential surface of the body,
When the latching portion is bent by the external force, the latching of the closing member is released, and the closing member is moved toward the inlet port of the communication passage so as to close the inlet port of the communication passage by releasing the engagement. Min. The method according to claim 1,
The body
Wherein at least a part of the inner circumferential surface is curved toward the center of the inner circumferential surface so that the closure member is engaged. The method according to claim 1,
The body
Wherein one side of the inner circumferential surface is connected to an inlet of the communication passage so that the closing member reaches the inlet, and the other side is connected to the accommodation space. The method according to claim 1,
In the shape memory alloy,
And the shape is deformed to apply an external force in a direction away from the center of the inner peripheral surface. The method according to claim 1,
The catch
Wherein the communication passage is disposed at one end adjacent to the inlet of the communication passage. 6. The method of claim 5,
The shape memory alloy
Wherein the closing member is disposed at the other end located opposite to the one end adjacent to the inlet of the communication passage so that the closing member is disposed between the retaining portion and the shape memory alloy. The method according to claim 1,
Wherein the portion into which the flow path shutoff valve portion is inserted in the communication passage is arranged in the gravity direction when the distributor is mounted on the external device so that the closing member moves in the gravity direction by the release of the engagement. . The method according to claim 1,
The flow-
Further comprising a plurality of recesses circumferentially spaced along an outer circumferential surface of the body so that at least a portion of the body is bent by the shape memory alloy and recessed in the radial direction at the outer circumferential surface. The method according to claim 1,
The shape memory alloy
Wherein when the internal temperature of the accommodation space rises above a predetermined temperature, both ends are annularly spaced apart from each other. 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 a flow path shutoff valve part inserted into at least a part of the communication path so as to block an inlet port of the communication path,
The flow-
A body inserted into an inlet port of the communication passage;
A closure member housed inside the body, the closure member being engaged with a latch provided on the body;
And a shape memory alloy disposed inside the body and deforming in shape when an internal temperature of the accommodation space rises above a predetermined temperature to apply an external force to the inner circumferential surface of the body,
When the latching portion is bent by the external force, the latching of the closing member is released, and the closing member is moved toward the inlet port of the communication passage so as to close the inlet port of the communication passage by releasing the engagement. Valve assembly.

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