ลิ้นละอองลอยและเครื่องมือพ่นละอองลอย

Abstract

DEPCT68 ที่เปิดเผยคือลิ้นละอองลอยและเครื่องมือพ่นละอองลอย,ลิ้นละอองลอยที่ถูกนำไปใช้กับ เครื่องมือพ่นละอองลอยลิ้นละอองลอยรวมถึงลำตัวลิ้นที่ถูกเชื่อมต่อกับถ้วยปิดผนึก,ลำตัวลิ้นถูก จัดเตรียมโดยมีโพรงลิ้นสำหรับให้ของเหลวในถังละอองลอยเข้า,ก้านลิ้นถูกจัดให้มีอย่างเลื่อนได้ขึ้น และลงในโพรงลิ้นโดยมีปลายด้านบนที่ทะลุผ่านถ้วยปิดผนึก,โพรงพ่นถูกจัดเตรียมบนก้านลิ้น, โครงสร้างนำเข้าก๊าซที่ทำให้ก๊าซอัดในถังละอองลอยสามารถเข้าโพรงพ่นและโครงสร้างนำเข้า ของเหลวที่ทำให้ของเหลวในถังละอองลอยจากโพรงลิ้นสามารถเข้าโพรงพ่นเมื่อก้านลิ้นเลื่อนลง ข้างล่างถูกจัดให้มีระหว่างลำตัวลิ้นและก้านลิ้น,และโครงสร้างนำทางการไหลถูกจัดให้มีในโพรงพ่น, สำหรับนำทางของเหลวและก๊าซอัดเพื่อผสมและไหลออกจากโพรงพ่นเครื่องมือพ่นละอองลอย รวมถึงถังละอองลอยโดยมีช่องเปิดถัง,และตัวกระตุ้นที่ถูกเสียบเข้าไปในปลายด้านบนของก้านลิ้น และที่มีความสามารถในการพ่นของเหลวในรูปแบบของหมอก;ช่องเปิดถังของถังละอองลอยถูกจัด ให้มีด้วยขอบนูน,และถ้วยปิดผนึกถูกจัดให้มีด้วยหน้าแปลนเชื่อมต่อที่ถูกติดบนขอบนูนเพื่อยึดลิ้น ละอองลอยบนถังละอองลอย (รูปที่2);

Description

Aerosol valve and aerosol spray device

Technical field

[0001] The present invention relates to the technical field of aerosol products, in particular to an aerosol valve and an aerosol spray device using the aerosol valve. [Background Technology]

[0002] The aerosol industry has been subjected to two major shocks in its development over more than half a century. The first occurred in the 1970s and lasted until the mid-1980s, when the Montreal Protocol of 1987 came to a conclusion, clearly stating that chlorofluorocarbons (CFCs) cannot be used in aerosols. As a substitute, petrochemical gases, mainly liquefied petroleum gas (LPG) and dimethyl ether (DME), became the new aerosol spray power source. In the second shock that followed, there was a controversy over reducing or even limiting the use of volatile organic compounds (VOCs) in aerosols, because liquefied petroleum gas (LPG) and dimethyl ether (DME) are also volatile organic compounds (VOCs) and will also suffer the fate of being replaced in the end. Compressed gases such as air, nitrogen and carbon dioxide have advantages such as no damage to the ozone layer and the entire ecological environment and are non-flammable, making them better propellant substitutes after the two shocks to the aerosol industry.

[0003] Currently, aerosol valves used in aerosol cans using compressed gas as a propellant typically only allow the compressed gas to compress the liquid flow within the aerosol can and spray it onto an actuator, where it is then atomized by the actuator nozzle. This type of aerosol valve structure, as disclosed in Chinese Patent Application No. CN201620896344.X, entitled "A Powder Spraying Aerosol Valve Structure," typically includes a valve body connected to a sealing cup, a valve stem disposed within a cavity within the valve body, one end of the valve stem extending through the sealing cup and the valve body, an inner sealing gasket crimped between the end of the valve body and the inner wall of the sealing cup, and a sleeved inner sealing gasket formed with one end of the valve stem, forming a movable seal with the valve stem. A liquid spray chamber is provided at one end of the valve stem, and a flow restriction orifice is provided in the middle of the valve stem. The inner wall of the valve body cavity and the outer wall of the valve stem together define a liquid spray gap. Liquid spraying from this product can be controlled by controlling whether the flow restriction orifice in the liquid spray channel is connected to the liquid spray gap. However, because compressed gas generally does not have the "liquid vaporization" effect, that is, it does not have the phenomenon of rapid vaporization during the discharge of liquid from an aerosol spray device like liquefied gas. This rapid expansion of vaporization leads to the formation of a fine spray. Moreover, the above-mentioned aerosol valve itself cannot achieve atomization. Therefore, when compressed gas is used as a propellant, aerosol products using conventional aerosol valves often suffer from problems such as large spray particle size and poor atomization effect.

[0004] Therefore, the present invention is just based on above deficiency and produces.

[0005] [Summary of the invention]

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an aerosol valve with a simple structure and improved atomization effect. The present invention also provides an aerosol spray device using the aerosol valve.

[0007] The present invention is achieved through the following technical solutions:

[0008] An aerosol valve, characterized in that it includes a valve body 2 connected to a sealing cup 1, the valve body 2 being provided with a valve cavity 21 for supplying liquid in an aerosol tank to enter, a valve stem 3 being slidably provided in the valve cavity 21, the upper end of which passes through the sealing cup 1, the valve stem 3 being provided with an ejection cavity 31, an air intake structure 4 being provided between the valve body 2 and the valve stem 3 for supplying compressed gas in the aerosol tank to enter the ejection cavity 31 when the valve stem 3 slides downward, and a liquid inlet structure 5 for supplying liquid in the aerosol tank from the valve cavity 21 to enter the ejection cavity 31, the ejection cavity 31 being provided with a guide structure 6 for guiding liquid and compressed gas so that they mix and flow out in the ejection cavity 31.

[0009] The aerosol valve as described above is characterized in that: the air inlet structure 4 and the liquid inlet structure 5 are arranged opposite to each other, and the guide structure 6 includes a gas guide surface 61 provided on one side of the air inlet structure 4 and capable of guiding the compressed gas into a vortex shape, and a liquid guide surface 62 provided on one side of the liquid inlet structure 5 and capable of guiding the liquid into a vortex shape. The vortex-shaped compressed gas and the vortex-shaped liquid rotate in the same direction, so that the compressed gas and liquid are mixed in a vortex shape.

[0010] The aerosol valve as described above is characterized in that: the guide structure 6 is a protrusion in the middle of the bottom wall of the ejection chamber 31, the outer wall of the protrusion is spaced from the inner wall of the ejection chamber 31, and the gas guide surface 61 and the liquid guide surface 62 are respectively provided on both sides of the protrusion.

[0011] The aerosol valve as described above is characterized in that: the gas guide surface 61 includes a first arcuate concave surface directly opposite the gas inlet structure 4 and a first arcuate convex surface connected to the first arcuate concave surface, and the liquid guide surface 62 includes a second arcuate concave surface directly opposite the liquid inlet structure 5 and a second arcuate convex surface connected to the second arcuate concave surface.

[0012] The aerosol valve described above is characterized in that the air inlet structure 4 includes an air inlet hole 41 provided on the side wall of the valve body 2 for admitting compressed gas from the aerosol can, and a gas nozzle 42 provided on the side wall of the valve stem 3 and connecting the air inlet hole 41 and the ejection chamber 31 when the valve stem 3 slides downward.

[0013] The aerosol valve as described above is characterized in that the air inlet 41 includes a large air inlet hole end 411 for compressed gas to enter, and a small air inlet hole end 412 for connecting the large air inlet hole end 411 and the gas nozzle 42 and having a smaller diameter than the large air inlet hole end 411.

[0014] The aerosol valve as described above is characterized in that the liquid inlet structure 5 includes a liquid nozzle 52 provided on the side wall of the valve stem 3 and communicating with the valve cavity 21 and the ejection cavity 31 when the valve stem 3 slides downward.

[0015] The aerosol valve as described above is characterized in that the gas nozzle 42 and the liquid nozzle 52 each include an inlet section, an outlet section having a smaller diameter than the inlet section and communicating with the ejection chamber 31, and a transition section connected between the inlet section and the outlet section and having a diameter gradually decreasing from the inlet section to the outlet section.

[0016] The aerosol valve described above is characterized in that: a sealing gasket 8 that is movable and sealed on the valve stem 3 is installed between the valve body 2 and the sealing cup 1, and the gas nozzle 42 and the liquid nozzle 52 are located above the sealing gasket 8. When the valve stem 3 slides downward, the gas nozzle 42 moves below the sealing gasket 8 to communicate with the air inlet 41, and the liquid nozzle 52 moves below the sealing gasket 8 to communicate with the valve chamber 21. A spring 9 is provided in the valve chamber 21 to bias the valve stem 3 upward.

[0017] An aerosol spray device using the above-mentioned aerosol valve comprises an aerosol can 20 having a can opening and an actuator 30 plugged into the upper end of a valve stem 3 and capable of spraying liquid in a mist form. The device is characterized in that a flange 201 is provided at the can opening of the aerosol can 20, and a connecting flange 12 is provided on the sealing cup 1 for snapping onto the flange 201 to secure the aerosol valve to the aerosol can 20.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. In the present invention, the compressed gas entering the ejection chamber from the air inlet structure and the liquid entering the ejection chamber from the liquid inlet structure are guided by the guide structure to form a two-phase flow, so that the airflow mixes and impacts the liquid to break up the liquid. The structure is simple and can perform preliminary atomization before using the actuator for atomization, thereby improving the atomization effect, meeting the atomization requirements of using compressed gas as a propellant, and being beneficial to the environment.

[0020] 2. In the present invention, the compressed gas increases in flow rate after passing through the air inlet holes with apertures from large to small, which facilitates the dispersion of the liquid.

Brief Description of the Drawings

[0021] FIG1 is a perspective view of the present invention;

[0022] FIG2 is a cross-sectional view of the present invention in its initial state;

[0023] FIG3 is a cross-sectional view of the present invention in use;

[0024] FIG4 is a cross-sectional view taken along line AA in FIG3 ;

[0025] FIG5 is an exploded view of the present invention;

[0026] FIG6 is a schematic structural diagram of an aerosol spray device equipped with an aerosol valve of the present invention. [Specific implementation method]

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] As shown in Figures 1 to 6, an aerosol valve includes a valve body 2 connected to a sealing cup 1, a valve cavity 21 for supplying liquid in an aerosol tank to enter is provided in the valve body 2, a valve stem 3 with an upper end extending through the sealing cup 1 is slidably provided in the valve cavity 21, a spray cavity 31 is provided on the valve stem 3, and an air intake structure 4 and a liquid inlet structure 5 are provided between the valve body 2 and the valve stem 3 for supplying compressed gas in the aerosol tank to enter the spray cavity 31 when the valve stem 3 slides downward, respectively. The spray cavity 31 is provided with a guide structure 6 for guiding the liquid and compressed gas so that they mix and flow out of the spray cavity 31. In the present invention, the compressed gas entering the ejection chamber from the air inlet structure and the liquid entering the ejection chamber from the liquid inlet structure are guided by the guide structure to form a two-phase flow, so that the air flow mixes and impacts the liquid to break up the liquid. The structure is simple and can perform preliminary atomization before using the actuator for atomization, thereby improving the atomization effect, meeting the atomization requirements of using compressed gas as a propellant, and being beneficial to environmental protection.

[0029] As shown in Figure 4, the air intake structure 4 and the liquid intake structure 5 are arranged opposite to each other, and the guide structure 6 includes a gas guide surface 61 provided on one side of the air intake structure 4 and capable of guiding the compressed gas into a vortex shape, and a liquid guide surface 62 provided on one side of the liquid intake structure 5 and capable of guiding the liquid into a vortex shape. The vortex-shaped compressed gas and the vortex-shaped liquid have the same rotation direction, so that the compressed gas and the liquid are mixed in a vortex shape.

[0030] Specifically, the guide structure 6 is a bulge in the middle of the bottom wall of the ejection cavity 31 , the outer wall of the bulge is spaced from the inner wall of the ejection cavity 31 , and the gas guide surface 61 and the liquid guide surface 62 are respectively provided on both sides of the bulge.

[0031] Specifically, the gas guide surface 61 includes a first arcuate concave surface directly opposite the gas inlet structure 4 and a first arcuate convex surface connected to the first arcuate concave surface. The liquid guide surface 62 includes a second arcuate concave surface directly opposite the liquid inlet structure 5 and a second arcuate convex surface connected to the second arcuate concave surface. The flow guide structure 6 is approximately S-shaped.

[0032] The air inlet structure 4 includes an air inlet hole 41 on the side wall of the valve body 2 for admitting compressed gas from the aerosol can, and a gas nozzle 42 on the side wall of the valve stem 3, which connects the air inlet hole 41 with the ejection chamber 31 when the valve stem 3 slides downward. The liquid inlet structure 5 includes a liquid nozzle 52 on the side wall of the valve stem 3, which connects the valve chamber 21 with the ejection chamber 31 when the valve stem 3 slides downward. The gas nozzle 42 and the liquid nozzle 52 are located on either side of the flow guide structure 6, with the gas nozzle 42 facing the first arc-shaped concave surface of the gas guide surface 61, and the liquid nozzle 52 facing the second arc-shaped concave surface of the liquid guide surface 62. When the air inlet hole 41 connects to the gas nozzle 42 and the valve chamber 21 connects to the liquid nozzle 52, the compressed gas and liquid are respectively ejected onto either side of the flow guide structure 6, flowing along the approximately S-shaped guide surface of the flow guide structure 6 on both sides, ultimately interweaving into a two-phase vortex flow.

[0033] Furthermore, the air inlet 41 includes a large air inlet end 411 for the compressed gas to enter, and a small air inlet end 412, which is smaller in diameter than the large air inlet end 411 and connects the large air inlet end 411 with the gas nozzle 42. This structure can control the air inlet flow rate. After the compressed gas passes through the air inlet holes with decreasing diameters, the air flow rate increases, which facilitates the dispersion of the liquid.

[0034] Furthermore, both the gas nozzle 42 and the liquid nozzle 52 include an inlet section, an outlet section with a smaller diameter than the inlet section and connected to the ejection chamber 31, and a transition section connected between the inlet and outlet sections, with the diameter gradually decreasing from the inlet section to the outlet section. After the fluid passes through the gas nozzle 42 and the liquid nozzle 52, which transition from a large to a small aperture, the flow rate of the gas and liquid entering the ejection chamber 31 increases, which helps to break up the liquid, thereby making the aerosol product sprayed more finely and evenly atomized.

[0035] In the present invention, a sealing gasket 8, which is movably mounted on the valve stem 3, is installed between the valve body 2 and the sealing cup 1. Specifically, the sealing gasket 8 is mounted in a mounting groove 23 at the end of the valve body 2 and, after the valve body 2 is snap-fitted onto the sealing cup 1, is clamped between the two. As shown in FIG2 , in the initial state, the gas nozzle 42 and the liquid nozzle 52 are located above the sealing gasket 8, separated from the air inlet 41 and the valve cavity 21. As shown in FIG3 , when the valve stem 3 slides downward, the gas nozzle 42 moves below the sealing gasket 8 to communicate with the air inlet 41, and the liquid nozzle 52 moves below the sealing gasket 8 to communicate with the valve cavity 21. A spring 9 is provided within the valve cavity 21 to bias the valve stem 3 upward. The lower end of the spring 9 abuts against the bottom wall of the valve chamber 21, and the upper end abuts against the lower end of the valve stem 3. When the valve stem 3 slides downward to eject the two-phase flow, the spring 9 can press the valve stem 3 to return upward, so that the gas nozzle 42 and the liquid nozzle 52 are located above the sealing gasket 8, so that the aerosol valve is re-sealed.

[0036] In the present invention, the valve stem 3 is provided with a longitudinally extending guide groove 32. A guide slider 22 is provided within the valve cavity 21, inserted into the guide groove 32 and sliding along the guide groove 32 as the valve stem 3 slides up and down relative to the valve body 2. Specifically, two guide sliders 22 are provided on the inner wall of the valve cavity 21, facing each other. Correspondingly, a guide groove 32 is provided on each side of the outer peripheral wall of the valve stem 3. As the valve stem 3 slides up and down relative to the valve body 2, the guide grooves 32 and the guide sliders 22 serve as sliding guides for the valve stem 3, ensuring stable and non-displacement movement of the valve stem, and ensuring smooth operation of the air and liquid intake mechanisms.

[0037] As shown in FIG6 , an aerosol spray device using the above-mentioned aerosol valve includes an aerosol can 20 having a can mouth and an actuator 30 plugged into the upper end of the valve stem 3 and capable of spraying liquid in a mist form. The actuator 30 adopts a two-piece precision mist point structure, which is assembled from a mist point main body device and a mist point diversion positioning column device. The atomized particles are fine, the spray is soft, and the noise is low. For the structure and principle of the mist point structure, please refer to the Chinese patent previously applied for by our company, application number CN201510036877.0, and the patent name is A Two-piece Precision Mist Point; a convex edge 201 is provided at the can mouth of the aerosol can 20, and a connecting flange 12 is provided on the sealing cup 1, which is buckled on the convex edge 201 to fix the aerosol valve to the aerosol can 20. Specifically, a sealing cup gasket 11 is provided in the sealing cup 1. When the connecting flange 12 cooperates with the ridge 201 to install the sealing cup 1 on the aerosol can 20, the sealing cup 1 presses the sealing cup gasket 11 against the end of the can mouth of the aerosol can 20, thereby achieving a fixed seal between the sealing cup 1 and the aerosol can 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 can 20. Since the gas phase is at the upper part of the aerosol can and the liquid phase is at the lower part of the can in the aerosol can, when the aerosol valve is installed on the aerosol can 20 and used, the liquid enters the valve chamber 21 through the straw 10 and is then sprayed into the discharge chamber 31 through the liquid nozzle 52, while the gas enters from the air inlet 41 and is sprayed into the discharge chamber 31 through the gas nozzle 42. The compressed gas and liquid are respectively sprayed onto both sides of the S-shaped block and flow along the S-shaped block on both sides, finally interweaving into a two-phase vortex. The mixed airflow impacts and breaks up the liquid. Finally, when the actuator sprays out, the spray particle size is small, and the atomization effect is good.

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