JPS6249109B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intermittent injection device for aerosol that automatically injects a fixed amount of aerosol content at regular intervals. A method of opening and closing a valve by sensing the temperature change due to the latent heat of vaporization with a heat sensitive body, or a method of retaining the aerosol content in a certain space through a suppressing material that allows only a certain limited amount of the liquid to pass through, and inside this reserved space. Various methods have been proposed, such as a method of opening the valve and injecting when the pressure exceeds a certain pressure.
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 gas phase dissolved in the content liquid separates and a gas phase is generated, and the generation rate is Since it is not constant, it causes changes in the injection interval and injection amount, and this inhibitory substance also creates a filter effect, causing changes in the composition of the contents, clogging of the inhibitory substance, difficulty in injection of high viscosity substances, etc., and adjustment of the injection flow rate. However, this method had disadvantages such as being extremely difficult. In addition, all of the various intermittent injection valves that have been proposed so far require an extremely high level of machining precision and have complex configurations, making them extremely impractical if manufacturing errors are taken into account.

The present invention eliminates the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings.
is a mountain cup fixed to the upper end of the aerosol container 2, and the annular body 5 is engaged with the groove 4 on the inner surface of the outer peripheral wall 3.
The convex portion 6 is fitted and fixed. Reference numeral 7 denotes a main body which is screwed and fixed to the inner periphery of the upper end of the engagement annular body 4 via a screw groove 8 so as to be freely retractable and forward, and is connected to the stem 9 of the aerosol container. 11 is the gas phase part 1 of the aerosol container 2
This is a gas phase introduction path that communicates with the gas phase path 13 of the stem 9 that communicates only with the stem 9, and one end thereof communicates with a pressurizing chamber 14 having a certain spatial volume. Reference numeral 16 denotes the gas phase introduction path 1 that communicates the pressurized chamber 14 with the gas phase path 13.
1 is a suppressor that blocks the gas phase from flowing in, and removes dust such as chips generated during manufacturing from the gas phase inflow direction.The removal body 17 is made of a wire mesh of about 100 mesh, and the center prevents the gas phase from flowing out from the outer periphery. A rubber gasket 18 with a circulation hole in the center, a suppressing spacer 19 with a hole in the center to suppress the flow of the gas phase, a filter paper 20 to further suppress the flow of the gas phase, and a filter paper 20 that holds the filter paper 20 in a fixed position and holds it in the center. Holding spacer 2 with a communication hole in the part
1. 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 flow hole 23 is formed in the center to hold this elastic suppressing material 22. holding spacer 24
This holding spacer 2 is polymerized in the order of
4 and one end of the holding spacer 24 is in contact with the communication hole 2 of the holding spacer 24.
3 and the gas phase introduction path 11 in the direction of the pressurizing chamber 14, the press rod 26 is screwed into a screw tube 27 protruding and fixed to the outer surface of the main body 7 so as to be able to move forward and backward. By rotating the protruding rotating portion 28, the pressing rod 26 moves forward and backward to move the elastic suppressing material 22 and the filter paper 20.
Adjust the degree of pressure on the elastic restraint material 2 when pressure is applied
2. When the filter paper 20 is compressed, the area through which the gas phase can flow is strongly restricted, and the flow rate of the gas phase per unit time is minimized, and if the pressing force is small or absent, it will not be compressed. Since the gas phase is small or small, the area where the gas phase can flow is large, and the gas phase flow rate per unit time can be increased. 29
is a pressing body that covers one side of the pressurizing chamber 14 and is formed in a position where it can receive the pressurizing force of the pressurizing chamber 14, and its outer peripheral end is fixed at a fixed position in the main body 7 by a fixing member 30 screwed into the main body 7. A pressure-receiving gasket 31 is placed on the side of the pressurizing chamber 14, and a plate spring 32 is placed on the outer surface to maintain a pressing force in the direction of the pressurizing chamber 14 at all times. A sliding rod 35 has one end protruding into the pressurizing chamber 14 and fixed to the pressing body 29 with a screw 36, and is slidably inserted into the sliding hole 37 of the main body 7. Reference numeral 38 denotes an on-off valve provided in a part of this sliding rod 35, and a closing part 41 with O-rings 39 and 40 fixed on both sides and inserted into the sliding hole 37 when airtight is in place.
and a discharge part 43 inserted into the sliding hole 37 through a gas phase flow interval 42, with one end connected to the pressurizing chamber 1.
In a state where the pressure is lower than the set pressure of the pressurizing chamber 14, the closing part 41 is located in the communicating part 45 of the gas phase exhaust passage 44 communicating with the sliding hole 37, and the exhaust hole 46 communicates with the outside air at one end. A discharge section 43 is connected to the discharge section 43.
Reference numeral 48 denotes a control valve that is installed on the sliding rod 35 adjacent to the on-off valve 38 and communicates with the liquid phase portion of the aerosol container 2. O-rings 49 and 50 are fixed on both sides of the control valve, and the sliding hole 37 is airtightly sealed. The sliding holes 37 on the outer periphery of the O-rings 49 and 50 are located at the same distance.
A liquid phase outflow interval 51 is formed between the two. A nozzle 52 communicates with the liquid phase portion of the aerosol container 2 via the control valve 48, and is formed at the end of the sliding hole 37. 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; It is sufficient that the device communicates with the gas phase passage 13 and the liquid phase passage 54, respectively, during use.
In order to further ensure safety considerations, it is convenient to use the valve mechanism 53 described above. The valve mechanism 53 will be described below. Reference numeral 55 is the upright portion of the mountain cup 1, and a housing 57 is fixed to the central portion via an upper gasket 56. Reference numeral 59 denotes a dip tube fixed to the lower end of the housing 57, the lower end of which extends to the liquid phase portion located at the bottom of the aerosol container 2, and the upper end connected to the inside of the housing 57. Reference numeral 60 indicates a spring for pressing the stem 9, one end of which is inserted into the housing 57, toward the main body 7. Reference numeral 61 indicates a communication hole bored in the side surface of the stem 9 to connect the liquid passage 54 of the stem 9 with the dip tube 59. The stem 9 is sealed by a lower gasket 62 pressed by a spring 60.
Opens only when pressed. Reference numeral 63 denotes an outlet hole bored in the side surface of the stem 9 to connect the gas phase passage 13 with the gas phase portion 12 of the aerosol container 2, and a position defined by the lower gasket 62 so as not to communicate with the dip tube 59. is located within the housing 57 of. Reference numeral 64 denotes an opening/closing body whose opening end surface is pressed against the upper gasket 56 and an annular sealing protrusion 65 protruding from the lower surface is pressed against the upper surface of the lower gasket 62. The stem 9 is inserted through the center part and the gas phase of the aerosol container 2 is closed. The outlet hole 63 is formed at a position via the portion 12 and the sealing protrusion 65, and communication between the outlet hole 63 and the gas phase portion 12 is normally interrupted by the close contact between the sealing protrusion 65 on the lower surface and the lower gasket 62. There is.

In the structure as described above, when the stem 9 is not pressed, both the communication hole 61 and the outlet hole 63 are cut off from communicating with the liquid phase section and the gas phase section 12, but when the main body 7 is engaged. When the stem 9 is pressed by fitting into the fitting body 5, the stem 9 is pressed against the restoring force of the spring 60, and the communicating hole 6 is closed as shown in the drawing.
1 and the outlet hole 63 are opened and communicated with the gas phase part 12 and the liquid phase part, respectively. In this state, the liquid passage 54 communicates with the outflow interval 51 of the liquid phase, but communication with the nozzle is blocked by the control valve 48, and the content liquid is not sprayed from the nozzle 52, but the gas phase flows into the suppressor 16. Therefore, although its circulation is restricted, it flows into the gas phase introduction path 11 little by little and is retained in the pressurizing chamber 14. The flow rate of the gas phase per unit time in the suppressor 16 can be changed by rotating the rotating portion 28 and moving the pressing rod 26 forward and backward. That is, if the pressing rod 26 is screwed in and the components of the suppressor 16, such as the elastic suppressor 22 and the filter paper 20, are pressed and compressed, their composition will become denser and the area through which the gas phase can flow will be reduced. The amount of phase flowing 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, by adjusting the pressing force on the suppressor 16, the flow rate of the gas phase can be changed arbitrarily.
The time for raising the pressure inside the pressurizing chamber 14 to a constant pressure can be arbitrarily determined. In addition, since the gas phase is retained in the pressurizing chamber 14 in sequence, the pressing body 2
9 does not rapidly reverse and move its position until the pressure inside the pressurizing chamber 14 reaches the set pressure, but some deformation movement and pulsation occur. However, the on-off valve 38, control valve 48, etc. are formed on the sliding rod 35, and this sliding rod 3
Since 5 is slidably inserted into the sliding hole 37, an airtight contact distance within the sliding hole 37 can be obtained over an arbitrary length, and the pressing body 2
There is no possibility that the gas phase discharge passage 44 will be opened unless the reliable valve opening operation of 9 is performed. If the retention of the gas phase in the pressurizing chamber 14 exceeds a certain pressure, the pressurizing force of the gas phase will exceed the pressing force of the plate springs 32,
The pressure receiving gasket 31 resists the restoring force of the plate spring 32.
At the same time, the sliding rod 35 is moved to the right in the drawing. Due to this sliding, the control valve 48 also slides at the same time, so the liquid passage 54 communicates with the nozzle 52 via the outflow interval 51 and the sliding hole 37, and the liquid is ejected by its own pressure via the dip tube 59 and the housing 57. The contents that come are sent to the nozzle 52.
More sprayed. On the other hand, the on-off valve 38 also slides in the sliding hole 37 at the same time and communicates the gas phase discharge path 44 with the discharge hole 46 through the flow interval 42, so that the gas phase in the pressurizing chamber 14 is discharged to the outside and pressurized. When the pressure inside the pressure chamber 14 becomes low, the pressing body 29 is restored by the restoring force of the plate spring 32, the on-off valve 38 and the control valve 48 are closed, and pressure starts to accumulate in the pressurization chamber 14, and the ejection of the content liquid is stopped. do. Next, as described above, the injection of the content liquid is interrupted until the gas phase whose flow rate is arbitrarily suppressed by the suppressor 16 reaches a constant pressure within the pressurizing chamber 14.

Since the present invention is constructed as described above,
Intermittent spraying of the aerosol content becomes possible, and deodorants, insecticides, and other arbitrary content can be automatically sprayed at regular intervals depending on the purpose without requiring manual intervention. In addition, since only the gas phase passes through the suppressor and is introduced into the pressurizing chamber, the suppressor is not clogged, the content changes in quality, or the high viscosity cannot be ejected. It is possible to reliably control the injection interval and obtain a highly reliable product without changing the amount of gas phase passing per hour until the end. In addition, since the on-off valve and the control valve are formed on a sliding rod, the mechanism is simplified and it is possible to have a wide sealing width with the exhaust hole, etc., so that the gas phase can be introduced and retained in the pressurized chamber one after another. Even if a slight change in position or pulsation occurs in the pressing body during the process, there is no risk of opening the discharge passage, and the pressure inside the pressurizing chamber will surely rise, making it possible to cause a large positional movement in the pressing body at a constant pressure. can.
Therefore, even if there are some manufacturing errors in the positional relationship of the pressing body, control valve, on-off valve, etc., the device can operate accurately, and there is no need for a high level of machining accuracy, and there may be some operational errors. It can also absorb errors.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a sectional view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 2...Aerosol container, 7...Main body, 12...
Gas phase part, 14... Pressurization chamber, 16... Suppressor, 29
... Pressing body, 35 ... Sliding rod, 37 ... Sliding hole,
38...Opening/closing valve, 48...Control valve, 52...Nozzle.

Claims (1)

[Claims] 1. A pressurized chamber that communicates only with the gas phase portion of the aerosol container via a suppressor that can suppress the flow of the gas phase of the aerosol product, and a pressurized chamber whose position changes when the pressure rises above the set pressure of this pressurized chamber. A sliding rod that is connected and fixed to the pressing body and slides within the sliding hole of the main body, and a sliding rod that is formed on this sliding rod and communicates between the outside air and the pressurizing chamber only when the pressing body is in motion, but is not normally pressurized. An on-off valve that isolates the pressure chamber from the outside air, and a control valve that is formed in a sliding rod together with this on-off valve and opens and closes as the on-off valve opens and closes to communicate or disconnect the liquid phase part of the aerosol container and the nozzle. An intermittent injection device for aerosol consisting of.