JPS5951349B2 - Intermittent injection valve for aerosol - Google Patents

Description

[Detailed Description of the Invention] The present invention automatically injects the aerosol content at regular intervals, and arbitrarily adjusts the duration of each injection to arbitrarily change the amount of each injection. This is what I did to get it.

Conventionally, this type of injection valve has a method of opening and closing the valve by sensing the temperature change due to latent heat of vaporization with a heat-sensitive body during injection of the aerosol content, or using an inhibitor that allows only a certain limited amount of the aerosol content to pass through. Various methods have been proposed, such as a method in which the fuel is reserved in a certain space via a fuel cell, and when the pressure in the reserved space exceeds a certain pressure, the valve is opened and the injection is performed. However, all of these methods were extremely difficult to implement and could not be put to practical use. That is, the above-mentioned method using a heat sensitive body has the drawback that the operating sensitivity of the heat sensitive body varies greatly due to differences in external temperature depending on the place and time of use, and the injection interval and injection amount change greatly. In the method of suppressing the amount of content liquid passing through using a suppressing substance, when the aerosol content liquid passes through this suppressing substance, the propellant dissolved in the content liquid separates and a gas phase is generated, and the generation rate is Since it is not constant, it causes the injection interval and injection amount to change, and this inhibitory substance has the disadvantage of causing a filter effect, causing changes in the composition of the contents, clogging of the inhibitory substance, and difficulty in injection of high-viscosity substances. At the same time, there was no device that could easily change the injection amount in one injection by controlling from outside the device. The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings. 1 is a mountain cup fixed to the upper end of the aerosol container 2, and 3 is the outer peripheral end of the mountain cup 1. It is a fitting ring in which an annular protrusion 4 on the inner periphery is engaged and fixed on the lower edge, and an insertion groove 6 is bored at a position opposite to the engagement protrusion 5 protruding on the outer periphery.

Reference numeral 7 denotes a lower body which engages with the fitting ring 3 via the engagement protrusion 5 by inserting the engagement protrusion 8 at the lower end into the insertion groove 6 and rotating, thereby pressing and opening the valve of the aerosol container 2. So, fitting ring 3
The stem 9 of the aerosol container 2 is connected to the stem 9 of the aerosol container 2.

Reference numeral 10 denotes a gas phase introduction path that communicates with the gas phase passage 12 of the stem 9 that communicates only with the gas phase section 11 of the aerosol container 2. It is continuously formed within the connected upper body 14, and one end communicates with a pressurizing chamber 15 having a constant spatial volume provided within the upper body 14.

Reference numeral 16 denotes a suppressor that blocks the gas phase introduction path 10 that communicates the pressurized chamber 15 with the gas phase path 12, from the gas phase inflow direction.
A removal body 17 formed of a wire mesh of about 100 mesh to remove dust such as chips generated during manufacturing, a rubber gasket 18 with a circulation hole in the center to prevent the gas phase from flowing out from the outer periphery,
A suppressing spacer 19 with pores in the center to suppress the flow of the gas phase, a filter paper 20 that further suppresses the flow of the gas phase, and a holding spacer that holds the filter paper in place and has a flow hole in the center. 2L An elastic suppressing material 22 made of felt material, open cell synthetic resin, etc. that has appropriate elasticity and stretchability and suppresses the flow of gas phase, and a circulation hole 23 is formed in the center to hold this elastic suppressing material 22. The holding spacers 24 are polymerized in this order, and one end of the holding spacers 24 is brought into contact with the holding spacers 24 to connect the communication holes 23 of the holding spacers 24 and the gas phase introduction path 1 in the direction of the pressurizing chamber 15.
A pressing rod 26 having a communication hole 25 that communicates with the container 2 is screwed into a screw tube 27 protruding and fixed to the outer surface of the lower main body 7, and the rotating part 28 protruding from the container 2 is rotated. By doing so, the pressure rod 26 is moved back and forth to adjust the degree of pressure on the elastic suppressing material 22 and the filter paper 20, and when the pressure is strong, the elastic suppressing material 22 and the filter paper 20 are moved back and forth.
is compressed, the area where the gas phase can flow is strongly restricted, the flow rate of the gas phase per unit time is minimized, and if the pressing force is small or absent, there will be no or little compression. The area through which the gas phase can flow is large, and the flow rate of the gas phase per unit time can be increased.

In other different embodiments, the flow of gas phase can be suppressed.
Use only the suppressing material made of felt material, filter paper, open-cell foam material, sintered metal, grindstone, etc., and press rod 26, etc. It may be configured without it. Reference numeral 29 denotes a pressing body that covers one side of the pressurizing chamber 15 and is formed in a position where it can receive the pressurizing force of the pressurizing chamber 15, and its outer peripheral end is fixed in a fixed position by an interior member 30 screwed into the upper body 14. A pressure receiving gasket 31 is placed on the pressure chamber 15 side, and a plate spring 32 is placed on the outer surface to maintain a pressing force in the direction of the pressurization chamber 15 at all times.

33 is formed at a position with respect to this pressurizing chamber 15 via a pressing body 29. In this pressed body, the pressure receiving convex portion 34 protruding from the upper end face passes through the interior member 30 and faces the plate protrusion 32, so that it is not normally subjected to the pressing force of the pressing body 29.

Reference numeral 35 denotes a discharge body constituting an opening/closing member 40 connected to the pressed body 33, and a liquid content/outlet passage 36 formed in the axial direction is connected to a nozzle 37 provided on the pressed body 33.

Reference numeral 38 denotes a storage body in which the discharge body 35 is slidably inserted into an internal storage chamber 39 and is screwed into the lower body 7 to form an on-off valve 40. A communicating liquid introduction hole 41 is formed.

Reference numeral 42 denotes a spring for pressing the ejector 35, one end of which is inserted into the storage body 38, in the direction of the plate spring 32. Reference numeral 43 indicates a ejector 35 for connecting the content liquid outlet passage 36 of the ejector 35 with the liquid introduction hole 41. This is a communication hole bored in the side surface of the opening, which is normally pressed by a spring 42 and sealed by a gasket 44 constituting the on-off valve 40, and opens only when the discharge body 35 is pressed down via the pressed body 33.

45 is a communication path that connects the storage chamber 39, which is separated from the content liquid via the gasket 44, and the gas phase introduction path 10 in the direction of the pressurizing chamber 15; An upper gasket interposed between the body 38 and the receiving flange 48,
A discharge gap 49 formed between the receiving flange 48 of the storage body 38 and the discharge body 35 is sealed when the press body 29 is not pressed.

50 is a valve body formed in the gas phase passage 12 that communicates this discharge interval 49 and the pressurizing chamber 15, and is intended to suppress the outflow speed of the gas phase flowing out from the pressurizing chamber 15 when the on-off valve 40 is opened. A valve seat portion 51 is formed by inserting a needle 65 screwed into the upper surface of the upper body 14 so as to be freely advanced and retractable into the gas phase introduction path 10, and forming a part of the gas phase introduction path 10 as a stepped portion.
As a result, the gas phase introduction path 10 is opened and closed and the flow rate is adjusted.

The needle 65 moves forward and backward through the knob 5 protruding from the upper body 14.
This is done by rotating 2. Further, the valve body 50 does not need to use the needle 65, and in other different embodiments, it may have the same structure as the suppressor 16, or other flow rate control means may be used. Reference numeral 53 denotes a valve mechanism interposed between the stem 9 and the inside of the aerosol container 2, which is not an essential requirement for operating the intermittent valve of the present invention described above; The valve mechanism 53 may be used as long as it communicates with the gas phase passage 12 and the liquid phase passage 54 during use, but in order to ensure transportation, storage, and safety considerations, the valve mechanism 53 is used. It is convenient.

The valve mechanism 53 will be explained below. Reference numeral 55 is the upright part of the mountain cup 1, and a housing 57 is fixed to the central part of the valve mechanism 53 through an upper gasket 56. A dip tube 58 is fixed to the lower end of the housing 57, and has a lower end extending to a liquid phase portion located at the bottom of the aerosol container 2, and an upper end connected to the inside of the housing 57.

59 is a spring for pressing the stem 9, one end of which is inserted into the housing 57, toward the upper body 14; 60 is a spring for connecting the liquid passage 54 of the stem 9 with the date tube 58;
This is a communicating hole drilled in the side surface of the stem 9, which is normally sealed by a lower gasket 61 pressed by the spring 59 and opens only when the stem 9 is pressed down.

Reference numeral 62 denotes an outlet hole bored in the side surface of the stem 9 so as to connect the gas phase passage 12 with the gas phase part 11 of the aerosol container 2, and the outlet hole 62 is located at a position partitioned by the lower gasket 61 so as not to communicate with the date tube 58. housing 57
Located within.

63 presses the open end surface against the upper gasket 56 and connects the annular sealing protrusion protruding from the lower surface to the lower gasket 61.
The opening/closing body is pressed against the top surface, and the stem 9 is inserted through the center part, and the outlet hole 62 is formed at a position via the gas phase part 11 of the aerosol container 2 and the sealing protrusion.
2 and the gas phase part 11 is cut off by the close contact between the sealing protrusion on the lower surface and the lower gasket 61.

In the structure as described above, when the stem 9 is not pressed, the communication hole 43 and the outlet hole 62 are cut off from communication with the liquid phase part and the gas phase part 11, but when the lower body 7 is fitted. When the wrist stem 9 is pressed by fitting into the coupling ring 3, the stem 9 is pressed against the restoring force of the spring 59 and opens the communication hole 60 and the outlet hole 62 as shown in the drawing, and the gas phase portions are respectively opened. ]
], communicates with the liquid phase.

In this state, communication between the liquid passage 54 and the content liquid outlet path 36 is blocked by the gasket 44, so that the content liquid is not sprayed from the nozzle 37, but the flow of the gas phase is restricted by the suppressor 16. Gas phase introduction path 1 is introduced little by little while
0 and is retained in the pressurizing chamber 15. The gas phase flow rate per unit time in the suppressor 16 can be changed by rotating the rotating part 28 and moving the pressing rod 26 forward and backward when the suppressor 16 is as shown in the drawings. be able to. That is, the pressing rod 26 is screwed, and the elastic suppressing material 22 and the filter paper 20 are screwed together.
If the constituent members of the suppressor 16 such as the like are pressed and compressed, their composition becomes dense and the area through which the gas phase can flow is reduced, so that the flow rate of the gas phase per unit time becomes small. On the other hand, if the pressing force of the pressing rod 26 is reduced or not pressed, the area through which the gas phase can flow can be increased, and the flow rate per unit time can be increased. Therefore, suppressor 1
By adjusting the pressure applied to the pressure chamber 6, the flow path of the gas phase can be changed arbitrarily, and the time for raising the pressure inside the pressurizing chamber 15 to a constant pressure can be arbitrarily determined. Also, gas phase pressurization chamber 1
Since the reservation to 5 is performed sequentially, the pressing body 29
does not rapidly reverse and move its position until the pressure inside the pressurizing chamber 15 reaches a constant pressure, but some deformation, movement, and pulsation occur. However, the pressurizing chamber 15 is operated by the on-off valve 40 as described above.
The on-off valve 4, which will be described later, communicates with the outside of the container through the
As long as there is no opening of 0, the inside of the pressurizing chamber 15 will not be opened and the pressure will not be reduced, and the valve will be opened after the pressure inside the pressurizing chamber 15 has risen sufficiently, thus making it possible to perform a reliable valve opening operation. When the gas phase is retained in the pressurizing chamber 15 to a certain level or more, the pressurizing force of the gas phase exceeds the pressing force of the plate springs 32, and the plate springs 32 are pushed against the restoring force to push the pressure receiving gasket 31. The pressed body 33 deforms and presses down at the same time, and presses the pressed body 33 at the same time.
At the same time, the discharge body 35 is also pressed downward, bending the gasket 44 and opening the communication hole 43. Due to this opening, the liquid phase in the aerosol container 2 is heated to the date tube 58 under its own pressure.
, through the housing 57 , the outlet hole 62 , and the passage 54 , and the inner liquid is injected from the nozzle 37 through the communication hole 43 and the inner liquid outlet path 36 . Also, the pressed body 3
3, the upper gasket 46 is separated by the receiving flange 48 and the discharge gap 49 is opened, so that the gas phase in the pressurized chamber 15 flows through the gas phase introduction path 10 through the valve body 50 in the opposite direction to that described above. When the pressure in the pressurized chamber 15 falls below a certain level, the pressing body 29 is restored by the restoring force of the plate spring 32, and the on-off valve 40 is closed. Spraying of liquid is discontinued. Since the rate of pressure drop to a constant pressure in the pressurizing chamber 15 can be adjusted arbitrarily by the valve body 50, the opening duration time of the on-off valve 40 via the pressed body 33 can also be adjusted arbitrarily. This makes it possible to arbitrarily determine the injection amount at any given time. Next, the injection of the liquid content is interrupted until the gas phase that has passed through the suppressor 16 reaches a constant pressure within the pressurizing chamber]5. Since the present invention is configured as described above, it is possible to intermittently spray the aerosol content, and automatically spray deodorants, insecticides, and other arbitrary contents at a constant level according to the purpose without having to obtain them. Can be sprayed at intervals.

In addition, since only the gas phase passes through the suppressor and is introduced into the pressurizing chamber, there is no possibility of clogging of the suppressor, deterioration of the liquid content, or inability to eject highly viscous materials. Since this does not occur, the amount of gas phase passing through the suppressor per hour set at the time of manufacturing does not change until the end, and the injection interval can be reliably controlled and a highly reliable product can be obtained. In addition, since a valve body is formed in the passage that communicates the pressurized chamber with the outside air when the on-off valve is opened, the flow rate of the gas phase in the passage can be changed by external operation. By adjusting the injection duration and adjusting the injection duration, the injection amount per injection can be arbitrarily determined.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the present invention. 2... Aerosol container, 11... Gas phase section, 15... Pressurized chamber, 16... Suppressor, 40... Opening/closing Valve, 50... Valve body.

Claims (1)

[Claims] 1. A pressurized chamber that communicates with the gas phase part of the aerosol container via a suppressor that can suppress the flow of the gas phase of the aerosol product, and a passage that communicates this pressurized chamber with outside air and that can be operated from the outside. It consists of a valve body that can change the flow rate of the gas phase in the passage, and an on-off valve that opens when the pressure in the pressurized chamber increases above a certain level and communicates the liquid phase part of the aerosol container with the nozzle. Characteristic intermittent injection valve for aerosol.