Aerosol valve and aerosol spraying device

Abstract

The present invention discloses an aerosol valve and an aerosol spraying device. The aerosol valve is used in the aerosol spraying device and includes a valve body connected to a sealing cup. The valve body defines a valve chamber for receiving liquid from an aerosol tank. A valve stem, the upper end of which passes through the sealing cup, is slidably mounted within the valve chamber. The valve stem defines a spray chamber. Between the valve body and the valve stem, an air supply mechanism is provided for allowing compressed gas from the aerosol tank to enter the spray chamber when the valve stem slides downward, and a liquid supply mechanism is provided for allowing liquid from the aerosol tank to enter the spray chamber from the valve chamber. The spray chamber defines a flow guide mechanism for guiding the liquid and compressed gas to mix and discharge the liquid. The aerosol spraying device includes an aerosol tank having an opening and an actuator inserted into the upper end of the valve stem for spraying the liquid in a mist. The aerosol tank has a rim at its opening, and the sealing cup has a connecting flange that engages with the rim to secure the aerosol valve to the aerosol tank.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol products, and particularly to an aerosol valve and an aerosol spraying device using the aerosol valve.

Background Art

[0002] During more than half a century of development, the aerosol industry has been affected by two major impacts. The first impact occurred in the 1970s and continued until the mid-1980s. That is, the Montreal Protocol concluded in 1987 stipulates that chlorofluorocarbons (CFCs) cannot be used in aerosols. As an alternative, petrochemical gases mainly including liquefied petroleum gas (LPG) and dimethyl ether (DME) have become new jet power sources for aerosols. In the subsequent second impact, there has been a debate about reducing or even restricting the use of volatile organic compounds (VOCs) in aerosols. Since liquefied petroleum gas (LPG) and dimethyl ether (DME) are themselves volatile organic compounds (VOCs), they will ultimately be replaced. Compressed gases such as air, nitrogen, and carbon dioxide have no destructive impact on the ozone layer and the entire ecological environment and are non-flammable, so they are the best alternatives for propellants after undergoing the two impacts by the aerosol industry.

[0003] Currently, in aerosol tanks that use compressed gas as a propellant, the aerosol valve used in the aerosol tank is typically used only to restrict the flow of liquid in the aerosol tank with compressed gas and spray it into an actuator nozzle for atomization. Such an aerosol valve structure is disclosed in a Chinese patent application no. CN201620896344.X, titled Powder Discharge Type Aerosol Valve Structure, and typically includes a valve body connected to a seal cup, a valve stem provided within the cavity of the valve body, one end of the valve stem passing through the seal cup and the valve body, an internal seal gasket pressed between the end of the valve body and the inner wall of the seal cup, the internal seal gasket fitted to one end of the valve stem and forming a movable seal with the valve stem, a liquid discharge chamber provided at one end of the valve stem, a flow limiting hole provided in the middle of the valve stem, and a liquid discharge gap formed by both the inner wall of the cavity of the valve body and the outer wall of the valve stem. By controlling the communication between the flow limiting hole in the liquid ejection channel and the liquid ejection gap, this product can be controlled to eject liquid. However, compressed gases generally do not have the effect of "vaporizing liquids," that is, the phenomenon of liquefied gas rapidly vaporizing when liquid is discharged from an aerosol sprayer. As a result, the rapid expansion due to vaporization forms a fine mist, and atomization cannot be achieved by the aerosol valve itself. Therefore, when compressed gas is used as a propellant, aerosol products using conventional aerosol valves often suffer from problems such as large particle size of sprayed particles and low atomization effect.

[0004] Therefore, the present invention is developed to address the above-mentioned drawbacks. [Overview of the project] [Problems that the invention aims to solve]

[0005] The object of the present invention is to provide an aerosol valve that solves the shortcomings of the prior art, has a simple structure, and improves atomization efficiency. The present invention also provides an aerosol spraying device using the aerosol valve. [Means for solving the problem]

[0006] The present invention is achieved by the following technical solutions.

[0007] An aerosol valve is provided, comprising a valve body 2 connected to a seal cup 1, wherein a valve chamber 21 for holding liquid from an aerosol tank is provided within the valve body 2, a valve stem 3 whose upper end penetrates the seal cup 1 is provided within the valve chamber 21 so as to be slidable vertically, a discharge chamber 31 is provided in the valve stem 3, and between the valve body 2 and the valve stem 3, there is an air supply structure 4 for compressed gas from the aerosol tank to enter the discharge chamber 31 when the valve stem 3 slides downward, and a liquid supply structure 5 for liquid from the aerosol tank to enter the discharge chamber 31 from the valve chamber 21, and within the discharge chamber 31, there is a flow guide structure 6 for guiding the liquid and compressed gas to mix and discharge within the discharge chamber 31.

[0008] In the aerosol valve, the air supply structure 4 and the liquid supply structure 5 are provided opposite each other, and the flow guide structure 6 includes a gas guide surface 61 provided on the air supply structure 4 side that can guide compressed gas in a vortex shape, and a liquid guide surface 62 provided on the liquid supply structure 5 side that can guide liquid in a vortex shape, characterized in that the direction of rotation of the vortex-shaped compressed gas and the vortex-shaped liquid is the same, and the compressed gas and liquid are mixed in a vortex shape.

[0009] In the aerosol valve described above, the flow guide structure 6 is a bump in the central part of the bottom wall of the discharge chamber 31, with a gap between the outer wall of the bump and the inner wall of the discharge chamber 31, and the gas guide surface 61 and the liquid guide surface 62 are provided on both sides of the bump, respectively.

[0010] The aerosol valve is characterized in that the gas guide surface 61 includes a first arc-concave surface facing the air supply structure 4 and a first arc-convex surface connected to the first arc-concave surface, and the liquid guide surface 62 includes a second arc-concave surface facing the liquid supply structure 5 and a second arc-convex surface connected to the second arc-concave surface.

[0011] The aerosol valve is characterized in that the air supply structure 4 includes an air supply hole 41 provided on the side wall of the valve body 2 into which compressed gas from the aerosol tank enters, and a gas outlet 42 provided on the side wall of the valve stem 3 which connects the air supply hole 41 and the discharge chamber 31 when the valve stem 3 slides downward.

[0012] The aerosol valve is characterized in that the air supply hole 41 includes a large air supply hole end 411 into which compressed gas enters, and a small air supply hole end 412 which connects the large air supply hole end 411 and the gas outlet 42 and has a smaller diameter than the large air supply hole end 411.

[0013] In the aerosol valve, the liquid supply structure 5 is provided on the side wall of the valve stem 3 and includes a liquid outlet 52 that connects the valve chamber 21 and the discharge chamber 31 when the valve stem 3 slides downward.

[0014] In the aerosol valve, both the gas outlet 42 and the liquid outlet 52 are characterized by including an inlet stage, an outlet stage having a smaller diameter than the inlet stage and communicating with the discharge chamber 31, and a transition stage connected between the inlet stage and the outlet stage, the diameter of which gradually decreases from the inlet stage to the outlet stage.

[0015] In the aerosol valve, a seal gasket 8 is installed between the valve body 2 and the seal cup 1, which is movably sealed and fitted onto the valve stem 3. The gas outlet 42 and the liquid outlet 52 are located above the seal gasket 8. When the valve stem 3 slides downward, the gas outlet 42 moves below the seal gasket 8 and communicates with the air supply hole 41, and the liquid outlet 52 moves below the seal gasket 8 and communicates with the valve chamber 21. A spring 9 is provided in the valve chamber 21 to bias the valve stem 3 and return it to its upward position.

[0016] An aerosol spraying device using the above-described aerosol valve, comprising an aerosol tank 20 having an opening and an actuator 30 inserted into the upper end of a valve stem 3 for spraying liquid in a mist, characterized in that a rim 201 is provided at the opening of the aerosol tank 20, and a connecting flange 12 is provided on the seal cup 1 which is coupled to the rim 201 and fixes the aerosol valve to the aerosol tank 20. [Effects of the Invention]

[0017] Compared to the prior art, the present invention has the following advantages.

[0018] 1. In this invention, compressed gas entering the ejection chamber from the air supply structure and liquid entering the ejection chamber from the liquid supply structure are guided by the flow guide structure to become a two-phase flow, thereby mixing the airflow and colliding with the liquid to break it up. This invention has a simple structure, and by performing pre-atomization prior to atomization by the actuator, the atomization effect can be improved, satisfying the atomization requirements for compressed gas used as a propellant and being advantageous for environmental protection.

[0019] 2. In this invention, when compressed gas passes through the air intake holes from the larger to the smaller end, the gas flow velocity is increased, and the dispersion of the liquid is promoted. [Brief explanation of the drawing]

[0020] [Figure 1] This is a perspective view of the present invention. [Figure 2] This is a cross-sectional view of the present invention in its initial state. [Figure 3] This is a cross-sectional view of the present invention in use. [Figure 4] This is a cross-sectional view of section AA in Figure 3. [Figure 5] This is an exploded view of the present invention. [Figure 6] This is a schematic diagram of the structure of an aerosol spraying device equipped with the aerosol valve of the present invention. [Modes for carrying out the invention]

[0021] Hereinafter, the present invention will be further described with reference to the drawings.

[0022] As shown in FIGS. 1 to 6, the aerosol valve includes a valve body 2 connected to a seal cup 1. Inside the valve body 2, a valve chamber 21 into which the liquid in the aerosol tank enters is provided. Inside the valve chamber 21, a valve stem 3 whose upper end penetrates the seal cup 1 is provided so as to be slidable up and down. An ejection chamber 31 is provided on the valve stem 3. Between the valve body 2 and the valve stem 3, an air supply structure 4 through which compressed gas in the aerosol tank enters the ejection chamber 31 when the valve stem 3 slides downward and a liquid supply structure 5 through which the liquid in the aerosol tank enters the ejection chamber 31 from the valve chamber 21 are provided. Inside the ejection chamber 31, a flow guiding structure 6 for guiding the liquid and the compressed gas to be mixed and discharged inside the ejection chamber 31 is provided. In the present invention, the compressed gas entering the ejection chamber from the air supply structure and the liquid entering the ejection chamber from the liquid supply structure are guided by the flow guiding structure to form a two-phase flow, whereby the airflows are mixed and collide with the liquid to break up the liquid. The present invention has a simple structure, can improve the atomization effect by performing preliminary atomization prior to atomization by an actuator, meets the atomization requirements for the compressed gas used as a propellant, and is advantageous for environmental protection.

[0023] As shown in FIG. 4, the air supply structure 4 and the liquid supply structure 5 are provided opposite to each other. The flow guiding structure 6 includes a gas guiding surface 61 provided on the air supply structure 4 side and capable of guiding the compressed gas in a spiral shape, and a liquid guiding surface 62 provided on the liquid supply structure 5 side and capable of guiding the liquid in a spiral shape. The rotational directions of the spiral compressed gas and the spiral liquid are the same, and the compressed gas and the liquid are mixed in a spiral shape.

[0024] Specifically, the flow guiding structure 6 is a bump at the center of the bottom wall of the ejection chamber 31. There is a gap between the outer wall of the bump and the inner wall of the ejection chamber 31. The gas guiding surface 61 and the liquid guiding surface 62 are provided on both sides of the bump, respectively.

[0025] Specifically, the gas guide surface 61 includes a first arc-concave surface facing the air supply structure 4 and a first arc-convex surface connected to the first arc-concave surface, and the liquid guide surface 62 includes a second arc-concave surface facing the liquid supply structure 5 and a second arc-convex surface connected to the second arc-concave surface. The flow guide structure 6 is a block with a substantially S shape.

[0026] The air supply structure 4 includes an air supply hole 41 provided on the side wall of the valve body 2 into which compressed gas from the aerosol tank enters, and a gas nozzle 42 provided on the side wall of the valve stem 3 that connects the air supply hole 41 and the discharge chamber 31 when the valve stem 3 slides downward. The liquid supply structure 5 includes a liquid nozzle 52 provided on the side wall of the valve stem 3 that connects the valve chamber 21 and the discharge chamber 31 when the valve stem 3 slides downward. The gas nozzle 42 and the liquid nozzle 52 are provided on both sides of the flow guide structure 6, with the gas nozzle 42 facing the first arc-concave surface of the gas guide surface 61, and the liquid nozzle 52 facing the second arc-concave surface of the liquid guide surface 62. When the air intake port 41 communicates with the gas outlet 42 and the valve chamber 21 communicates with the liquid outlet 52, the compressed gas and liquid are ejected to both sides of the flow guide structure 6, flow along the approximately S-shaped guide surface of the flow guide structure 6 on both sides, and finally merge to form a two-phase swirling flow.

[0027] Furthermore, the air intake port 41 includes a large air intake port end 411 into which compressed gas enters, and a small air intake port end 412 that connects the large air intake port end 411 to the gas outlet 42 and has a smaller diameter than the large air intake port end 411. The above structure allows control of the airflow velocity, and as the compressed gas passes through the air intake port from the larger end to the smaller end, the gas flow velocity increases, promoting the dispersion of the liquid.

[0028] Furthermore, both the gas nozzle 42 and the liquid nozzle 52 include an inlet stage, an outlet stage with a smaller diameter than the inlet stage that communicates with the discharge chamber 31, and a transition stage connected between the inlet stage and the outlet stage, with a diameter that gradually decreases from the inlet stage to the outlet stage. After the fluid passes through the gas nozzle 42 and the liquid nozzle 52, which have gradually decreasing diameters, the flow velocity of the gas and liquid entering the discharge chamber 31 increases, which is advantageous for dispersing the liquid, and as a result the discharged aerosol product is atomized more finely and uniformly.

[0029] In this invention, a seal gasket 8 is installed between the valve body 2 and the seal cup 1, and is movably sealed and fitted onto the valve stem 3. Specifically, the seal gasket 8 is installed in a mounting groove 23 at the end of the valve body 2, and interposed between the valve body 2 and the seal cup 1 when the valve body 2 engages with the seal cup 1. As shown in Figure 2, in the initial state, the gas outlet 42 and the liquid outlet 52 are located above the seal gasket 8 and spaced apart from the air intake hole 41 and the valve chamber 21. As shown in Figure 3, when the valve stem 3 slides downward, the gas outlet 42 moves below the seal gasket 8 and communicates with the air intake hole 41, and the liquid outlet 52 moves below the seal gasket 8 and communicates with the valve chamber 21. A spring 9 is provided inside the valve chamber 21 to bias the valve stem 3 and return it to its upward position. The lower end of the spring 9 abuts against the bottom wall of the valve chamber 21, and its upper end abuts against the lower end of the valve stem 3. When the valve stem 3 slides downward, a two-phase flow is ejected, and the spring 9 biases the valve stem 3 upward, returning it to its original position. As a result, the gas outlet 42 and the liquid outlet 52 are positioned above the seal gasket 8, and thus the aerosol valve is sealed again.

[0030] In this invention, the valve stem 3 is provided with a guide groove 32 extending in the vertical direction, and a slider 22 is provided in the valve chamber 21 which is inserted into the guide groove 32 and slides along the guide groove 32 when the valve stem 3 slides up and down relative to the valve body 2. Specifically, two sliders 22 are provided opposite each other on the inner wall of the valve chamber 21, and in this case, guide grooves 32 are provided on both sides of the outer circumferential wall of the valve stem 3. When the valve stem 3 slides up and down relative to the valve body 2, the guide groove 32 and the slider 22 play a sliding and guiding role for the valve stem 3, thereby stabilizing the sliding of the valve stem, preventing misalignment, and ensuring the proper operation of the air supply structure and fluid supply structure.

[0031] As shown in Figure 6, the aerosol spraying device using the above-described aerosol valve includes an aerosol tank 20 having an opening, and an actuator 30 inserted into the upper end of the valve stem 3 to spray the liquid in a mist. The actuator 30 is assembled from a two-part precision mist point structure, a mist point main body device, and a mist point flow diversion positioning column device, resulting in fine atomized particles, a soft spray, and low noise. For the structure and principle of the mist point structure, refer to the Chinese patent previously filed by our company, application number CN201510036877.0, patent title 2-part precision mist point. The opening of the aerosol tank 20 is provided with a rim 201, and the seal cup 1 is provided with a connecting flange 12 that engages with the rim 201 to fix the aerosol valve to the aerosol tank 20. Specifically, a seal cup washer 11 is provided inside the seal cup 1, and when the seal cup 1 is attached to the aerosol tank 20 by fitting the connecting flange 12 and the rim 201, the seal cup 1 presses the seal cup washer 11 against the end of the opening of the aerosol tank 20, thereby sealing and fixing the seal cup 1 and the aerosol tank 20. A straw 10 is connected to the liquid inlet at the lower end of the valve body 2, and the straw 10 extends into the aerosol tank 20. In an aerosol tank, the gas phase is at the top of the tank and the liquid phase is at the bottom. When the aerosol valve is attached to the aerosol tank 20 and used, the liquid enters the valve chamber 21 from the straw 10 and is ejected into the ejection chamber 31 through the liquid nozzle 52. Meanwhile, the gas enters from the air intake hole 41 and is ejected into the ejection chamber 31 through the gas nozzle 42. The compressed gas and liquid are ejected from both sides of the S-shaped block, flow along the S-shaped block on both sides, and finally merge to form a two-phase swirling flow. The airflow mixes and collides with the liquid, dispersing it, and finally is ejected from the actuator. The resulting spray has a small particle size and good atomization effect.

[0032] (Note) (Note 1) It is an aerosol valve, An aerosol valve comprising a valve body (2) connected to a seal cup (1), wherein the valve body (2) is provided with a valve chamber (21) into which liquid from an aerosol tank is contained, and a valve stem (3) is provided within the valve chamber (21) so as to be slidable vertically, with its upper end penetrating the seal cup (1), and a discharge chamber (31) is provided on the valve stem (3), and between the valve body (2) and the valve stem (3) are provided an air supply structure (4) into which compressed gas from the aerosol tank enters the discharge chamber (31) when the valve stem (3) slides downward, and a liquid supply structure (5) into which liquid from the aerosol tank enters the discharge chamber (31) from the valve chamber (21), and a flow guide structure (6) is provided within the discharge chamber (31) to guide the liquid and compressed gas and mix them within the discharge chamber (31) before discharge.

[0033] (Note 2) The aerosol valve according to Appendix 1, characterized in that the air supply structure (4) and the liquid supply structure (5) are provided opposite to each other, and the flow guide structure (6) includes a gas guide surface (61) provided on the air supply structure (4) side that can guide compressed gas in a vortex manner, and a liquid guide surface (62) provided on the liquid supply structure (5) side that can guide liquid in a vortex manner, wherein the rotation direction of the vortex-shaped compressed gas and the vortex-shaped liquid is the same, and the compressed gas and liquid are mixed in a vortex manner.

[0034] (Note 3) The aerosol valve according to Appendix 4, characterized in that the flow guide structure (6) is a bump in the central part of the bottom wall of the discharge chamber (31), there is a gap between the outer wall of the bump and the inner wall of the discharge chamber (31), and the gas guide surface (61) and liquid guide surface (62) are provided on both sides of the bump, respectively.

[0035] (Note 4) The aerosol valve according to Appendix 2 or 3, characterized in that the gas guide surface (61) includes a first arc-concave surface facing the air supply structure (4) and a first arc-convex surface connected to the first arc-concave surface, and the liquid guide surface (62) includes a second arc-concave surface facing the liquid supply structure (5) and a second arc-convex surface connected to the second arc-concave surface.

[0036] (Note 5) The aerosol valve according to Appendix 1, characterized in that the air supply structure (4) includes an air supply hole (41) provided on the side wall of the valve body (2) into which compressed gas from the aerosol tank enters, and a gas outlet (42) provided on the side wall of the valve stem (3) that connects the air supply hole (41) and the discharge chamber (31) when the valve stem (3) slides downward.

[0037] (Note 6) The aerosol valve according to Appendix 5, characterized in that the air intake hole (41) includes a large air intake end (411) into which compressed gas enters, and a small air intake end (412) which connects the large air intake end (411) and the gas outlet (42) and has a smaller diameter than the large air intake end (411).

[0038] (Note 7) The aerosol valve according to Appendix 5, characterized in that the liquid supply structure (5) is provided on the side wall of the valve stem (3) and includes a liquid outlet (52) that connects the valve chamber (21) and the discharge chamber (31) when the valve stem (3) slides downward.

[0039] (Note 8) The aerosol valve according to Appendix 7, characterized in that the gas nozzle (42) and the liquid nozzle (52) each include an inlet stage, an outlet stage having a smaller diameter than the inlet stage and communicating with a discharge chamber (31), and a transition stage connected between the inlet stage and the outlet stage, the diameter of which gradually decreases from the inlet stage to the outlet stage.

[0040] (Note 9) An aerosol valve as described in Appendix 7, characterized in that a seal gasket (8) is installed between the valve body (2) and the seal cup (1) and is movably sealed and fitted onto the valve stem (3), the gas outlet (42) and the liquid outlet (52) are located above the seal gasket (8), and when the valve stem (3) slides downward, the gas outlet (42) moves below the seal gasket (8) and communicates with the air intake hole (41), and the liquid outlet (52) moves below the seal gasket (8) and communicates with the valve chamber (21), and a spring (9) is provided in the valve chamber (21) to bias the valve stem (3) and return it to its upward position.

[0041] (Note 10) An aerosol spraying device using an aerosol valve described in any one of the appendices 1 to 9, It includes an aerosol tank (20) having an opening, and an actuator (30) inserted into the upper end of a valve stem (3) that sprays liquid in a mist, An aerosol spraying device characterized in that a rim (201) is provided at the opening of the aerosol tank (20), and a connecting flange (12) is provided on the seal cup (1) which is coupled to the rim (201) and fixes the aerosol valve to the aerosol tank (20).

Claims

1. It is an aerosol valve, The aerosol tank includes a valve body (2) connected to a seal cup (1), the valve body (2) having a valve chamber (21) into which the liquid in the aerosol tank is contained, the valve chamber (21) having a valve stem (3) whose upper end penetrates the seal cup (1) and which is slidably mounted vertically, the valve stem (3) having a discharge chamber (31), the valve stem (3) having a discharge chamber (31), the valve body (2) and the valve stem (3) having an air supply structure (4) into which compressed gas from the aerosol tank enters the discharge chamber (31) when the valve stem (3) slides downward and a liquid supply structure (5) into which the liquid from the aerosol tank enters the discharge chamber (31) from the valve chamber (21), the discharge chamber (31) having a flow guide structure (6) which guides the liquid and compressed gas to mix and discharge within the discharge chamber (31), The aerosol valve is characterized in that the air supply structure (4) and the liquid supply structure (5) are provided opposite to each other, and the flow guide structure (6) includes a gas guide surface (61) provided on the air supply structure (4) side that can guide compressed gas in a vortex manner, and a liquid guide surface (62) provided on the liquid supply structure (5) side that can guide liquid in a vortex manner, and the direction of rotation of the vortex-shaped compressed gas and the vortex-shaped liquid is the same, and the compressed gas and liquid are mixed in a vortex manner.

2. The aerosol valve according to claim 1, characterized in that the flow guide structure (6) is a bump in the central part of the bottom wall of the discharge chamber (31), there is a gap between the outer wall of the bump and the inner wall of the discharge chamber (31), and the gas guide surface (61) and liquid guide surface (62) are provided on both sides of the bump, respectively.

3. The aerosol valve according to claim 1, characterized in that the gas guide surface (61) includes a first arc-concave surface facing the air supply structure (4) and a first arc-convex surface connected to the first arc-concave surface, and the liquid guide surface (62) includes a second arc-concave surface facing the liquid supply structure (5) and a second arc-convex surface connected to the second arc-concave surface.

4. The aerosol valve according to claim 1, characterized in that the air supply structure (4) includes an air supply hole (41) provided on the side wall of the valve body (2) into which compressed gas from the aerosol tank enters, and a gas outlet (42) provided on the side wall of the valve stem (3) which connects the air supply hole (41) and the discharge chamber (31) when the valve stem (3) slides downward.

5. The aerosol valve according to claim 4, characterized in that the air intake hole (41) includes a large air intake hole end (411) into which compressed gas enters, and a small air intake hole end (412) which connects the large air intake hole end (411) and the gas outlet (42) and has a smaller diameter than the large air intake hole end (411).

6. An aerosol valve, The aerosol tank includes a valve body (2) connected to a seal cup (1), the valve body (2) having a valve chamber (21) into which the liquid in the aerosol tank is contained, the valve chamber (21) having a valve stem (3) whose upper end penetrates the seal cup (1) and which is slidably mounted vertically, the valve stem (3) having a discharge chamber (31), the valve stem (3) having a discharge chamber (31), the valve body (2) and the valve stem (3) having an air supply structure (4) into which compressed gas from the aerosol tank enters the discharge chamber (31) when the valve stem (3) slides downward and a liquid supply structure (5) into which the liquid from the aerosol tank enters the discharge chamber (31) from the valve chamber (21), the discharge chamber (31) having a flow guide structure (6) which guides the liquid and compressed gas to mix and discharge within the discharge chamber (31), The air supply structure (4) includes an air supply hole (41) provided on the side wall of the valve body (2) into which compressed gas from the aerosol tank enters, and a gas outlet (42) provided on the side wall of the valve stem (3) that connects the air supply hole (41) and the discharge chamber (31) when the valve stem (3) slides downward. The aerosol valve is characterized in that the air intake hole (41) includes a large air intake hole end (411) into which compressed gas enters, and a small air intake hole end (412) which connects the large air intake hole end (411) and the gas outlet (42) and has a smaller diameter than the large air intake hole end (411).

7. The aerosol valve according to claim 4, characterized in that the liquid supply structure (5) includes a liquid outlet (52) provided on the side wall of the valve stem (3) and which connects the valve chamber (21) and the discharge chamber (31) when the valve stem (3) slides downward.

8. The aerosol valve according to claim 7, characterized in that the gas nozzle (42) and the liquid nozzle (52) each include an inlet stage, an outlet stage having a smaller diameter than the inlet stage and communicating with a discharge chamber (31), and a transition stage connected between the inlet stage and the outlet stage, the diameter of which gradually decreases from the inlet stage to the outlet stage.

9. An aerosol valve, The aerosol tank includes a valve body (2) connected to a seal cup (1), the valve body (2) having a valve chamber (21) into which the liquid in the aerosol tank is contained, the valve chamber (21) having a valve stem (3) whose upper end penetrates the seal cup (1) and which is slidably mounted vertically, the valve stem (3) having a discharge chamber (31), the valve stem (3) having a discharge chamber (31), the valve body (2) and the valve stem (3) having an air supply structure (4) into which compressed gas from the aerosol tank enters the discharge chamber (31) when the valve stem (3) slides downward and a liquid supply structure (5) into which the liquid from the aerosol tank enters the discharge chamber (31) from the valve chamber (21), the discharge chamber (31) having a flow guide structure (6) which guides the liquid and compressed gas to mix and discharge within the discharge chamber (31), The air supply structure (4) includes an air supply hole (41) provided on the side wall of the valve body (2) into which compressed gas from the aerosol tank enters, and a gas outlet (42) provided on the side wall of the valve stem (3) that connects the air supply hole (41) and the discharge chamber (31) when the valve stem (3) slides downward. The liquid supply structure (5) is provided on the side wall of the valve stem (3) and includes a liquid outlet (52) that connects the valve chamber (21) and the injection chamber (31) when the valve stem (3) slides downward. The aerosol valve is characterized in that the gas nozzle (42) and the liquid nozzle (52) each include an inlet stage, an outlet stage having a smaller diameter than the inlet stage and communicating with a discharge chamber (31), and a transition stage connected between the inlet stage and the outlet stage, with a diameter that gradually decreases from the inlet stage to the outlet stage.

10. An aerosol valve according to claim 7, characterized in that a seal gasket (8) is installed between the valve body (2) and the seal cup (1) and is movably sealed and fitted onto the valve stem (3), the gas outlet (42) and the liquid outlet (52) are located above the seal gasket (8), and when the valve stem (3) slides downward, the gas outlet (42) moves below the seal gasket (8) and communicates with the air intake hole (41), and the liquid outlet (52) moves below the seal gasket (8) and communicates with the valve chamber (21), and a spring (9) is provided in the valve chamber (21) to bias the valve stem (3) and return it to its upward position.

11. An aerosol spraying device using an aerosol valve according to any one of claims 1 to 10, It includes an aerosol tank (20) having an opening, and an actuator (30) inserted into the upper end of a valve stem (3) that sprays liquid in a mist form, An aerosol spraying device characterized in that a rim (201) is provided at the opening of the aerosol tank (20), and a connecting flange (12) is provided on the seal cup (1) which is coupled to the rim (201) and fixes the aerosol valve to the aerosol tank (20).

Images