JPH0622550B2 - Chemical evaporation device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a chemical evaporation device for evaporating chemicals such as insecticides, fragrances, bactericides, antirust agents, rust preventives and deodorants over a long period of time. Regarding

2. Description of the Related Art As a device for evaporating the above-mentioned chemical agent into the air, for example, JP-A-56-36958, JP-A-57-197201,
The one disclosed in Japanese Utility Model Laid-Open No. 57-36883 is already known.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention According to the above-mentioned Japanese Patent Laid-Open No. 56-36958, a chemical is continuously supplied to a permeation diffusion material provided on a heater and the chemical is evaporated by the heat of the heater. Since the drug is sucked up by utilizing the capillary action of the permeation diffusion material, when the drug solution decreases, the distance between the liquid surface of the drug solution and the heating surface increases and the supply amount of the drug solution decreases, so that There is a problem that the amount of volatilization decreases when used.

In addition, since the heater and the permeation diffusion material are in contact with each other, the heat of the heater causes the permeation diffusion material to be resinized, and the amount of volatilization is likely to change, and since the container containing the drug needs a vent hole, it may fall over. There is a risk that the medicine may spill. Furthermore, when a volatile solvent such as a lower alcohol is used, the solvent cannot be used because it is concentrated by spontaneous volatilization.

On the other hand, in the one disclosed in JP-A-57-197201, the supply pipe is extended from the container containing the drug, the tip of this pipe is positioned on the evaporation sheet, and the drug is evaporated by heating the container. It is designed to be extruded on the sheet to evaporate.Because the tip of the supply pipe is always open, there is a risk of spilling the drug when tumbled, and because the drug is extruded using the expansion of air, As the amount of air in the container changes, the amount of extrusion changes and quantitative volatilization is not possible. Further, there is a problem that the volatile solvent cannot be used as in the above case.

Further, the one disclosed in Japanese Utility Model Publication No. 57-36883 is a device in which a nozzle opening of a container containing a drug is opened and closed by electromagnetic action to drip the drug onto a heating element and evaporate it.
Since the vent hole is opened, there is a risk that the drug may spill if it is tumbled, and if the height of the liquid level changes, the amount of the drug discharged due to the gravitational action also changes within a certain period of time. Can not. Therefore, even if the liquid level changes, there is a problem that a control circuit is required to enable the volatilization in a fixed amount and the entire apparatus becomes expensive.

The present invention has been made for the purpose of improving the above problems.

Means and Actions for Solving the Problems At the mouth of a container containing a drug to be volatilized, a valve body that is liquid-tightly connected to the mouth, and rotatably housed and rotated in the valve body. It has a drug vaporizer and shape memory spring that discharges the drug in the container to the heating element in a fixed amount by the groove provided on the peripheral surface and volatilizes it, and is deformed by the heat released from the heating element. It is composed of a rotary drive source that rotates the rotary valve by the driving force generated when it is used, and it is possible to volatilize the drug quantitatively by supplying the drug in the container to the heating element in a fixed amount over a long period of time. Chemical evaporation device.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 is a main body of this apparatus, which has a hollow plastic case 2 having two upper surfaces, in which a medicine to be volatilized is stored in a container insertion opening 2c opened on the upper surface 2a. The container 3 is inserted so that it can be inserted and removed with the mouth 3a facing downward. A fixed amount supply mechanism 4 is provided below the container insertion port 2c so as to supply the medicine in the container 3 in fixed amounts onto a heating element 11 described later.

As shown in FIG. 4, the fixed amount supply mechanism 4 has a valve body 5 liquid-tightly connected to the mouth 3a of the container 3 by means such as screwing or fitting. The valve body 5 has a shape in which cylinders are combined in a cross shape, and a drug inlet 5b into which the mouth 3a of the container 3 is fitted is formed on the upper surface of the vertical cylinder 5a, and an outlet 5c is formed on the lower surface. A cylindrical rotary valve 6 is rotatably housed in the horizontal cylinder 5b. In addition, 6d shows the connection part with a drive source.

On the peripheral surface of the rotary valve 6, a plurality of, for example, two grooves 6a for accommodating a fixed amount of the medicine in the container 3 with rotation are formed elongated in the circumferential direction. The end of the rotary valve 6 is connected to the rotary drive mechanism 8.

As shown in FIG. 2, the rotary drive mechanism 8 is a coil-shaped shape memory spring 9 formed of, for example, a shape memory alloy or shape memory plastic, and a ratchet mechanism for rotating the rotary valve 6 as the spring 9 expands and contracts. It consists of 10.

The shape memory spring 9 has a shape memorized in advance so as to contract (may be expanded) by applying heat, and the heating element 11 provided below the through hole 2d opened in the lower surface 2b of the case 2. It is installed in the vicinity of. One end of the shape memory spring 9 is fixed to a spring receiver 2e projecting from the bottom portion of the case 2, and the other end side thereof is fixed to a spring seat 10b provided at the base end of the operating rod 10a of the ratchet mechanism 10.

The operating rod 10a is movably supported in the expansion and contraction direction of the shape memory spring 9, and a metal elastic material or the like is provided between the spring seat 2f protruding from the case 2 and another spring seat 10c of the operating rod 10a. A compression spring 12 made of is formed in parallel with the shape memory spring 9.

Further, the tip of the operating rod 10a is meshed with a ratchet gear 10d provided at the end of the rotary valve 6, so that the rotary valve 6 is rotated in one direction by a certain angle in accordance with the reciprocating motion.

On the other hand, below the valve body 5 of the fixed quantity supply mechanism 4, a supply mat 14 for guiding the medicine dropped from the outlet 5c to the heating element 11.
Is provided on one side, and the other end side of the supply mat 14 reaches the heating element 11.

A plurality of slit-shaped vent holes 2g are opened in the peripheral wall of the case 2 in which the shape memory spring 9 is housed.

In addition, as the medicines contained in the container 3, there are fragrances, deodorants, bactericides (for agricultural use, industrial use, etc.), repellents, anti-mildew agents,
Acaricide, insecticide, rust preventive agent, etc. The solvent is aliphatic hydrocarbon, alcohol, aqueous solution, etc.
It can be volatilized at 00 ℃ and can be used without danger of explosion or ignition.

Next, the operation will be described. When electricity is applied to the heating element 11 via the cord 15 in order to volatilize the drug, the heating element 11 generates heat, and the heat is applied to the shape memory spring 9 so that the shape memory spring 9 shown in FIG. The state shown in FIG. 6B is contracted to the state shown in FIG. 6B. At this time, the operating rod 10a of the ratchet mechanism 10 is towed to rotate the ratchet gear 10d by one tooth.

Next, when the power supply to the heating element 1 is stopped, the shape memory spring 9 is cooled by the air flowing in through the ventilation hole 2g, and the sixth shape memory spring 9 is restarted.
The state shown in FIG. 6A is entered, and by repeating the states of FIGS. 6A and 6B, the ratchet mechanism 10 is rotated by a constant angle. Since the ratchet gear 10d of the ratchet mechanism is attached to the rotary valve 6 of the constant quantity supply mechanism 4, the rotary valve 6 is thereby changed from the state shown in FIG. 7 (a) to the state shown in FIG. 7 (b). It rotates to the state shown in Fig. 7 (C) and
The states of (a), (b), and (c) are repeated. In the state of FIG. 7 (a), a certain amount of the medicine that has flowed into the groove 6a is dripped onto the supply mat 14 from the outlet 5c.

At the same time, the air flowing into the empty groove 6a in the state of FIG. 7 (a) flows into the container 3, so that the drug in the container 3 flows into the empty groove 6a.

Thereafter, by repeating the above operation, a certain amount of the medicine is dropped on the supply mat 14.

The medicine dropped onto the supply mat 14 reaches the heating element 11 and is heated, and is volatilized into the air.

Although the rotary valve 6 has a cylindrical shape in the above embodiment,
As shown in the figure, it may be conical, or as shown in FIG. 9, a groove 6a may be provided on the end face of the cylinder.
Further, as shown in FIG. 10 (a), the groove 6a has the first groove
As shown in FIG. 0 (b), there may be three or more threads, and the axis of the rotary valve 6 may be vertical or inclined as shown in FIG.

Further, the groove 6a is not limited to be provided in the rotary valve 6 in the form of a concave groove, but may be formed as shown in FIGS. 12 (a) to 12 (c).

That is, two ridges 6e are provided on the same circumference of the rotary valve 6 as shown in FIG.
Insert inside. Then, after inserting the rotary valve 6 into the horizontal cylinder 5d in the valve body 5, the collar 6'is fitted, and the groove 5 is formed between the protrusions 6e.
When the chemical liquid contained in the groove 5e is brought into the state of FIG. 12 (b) as the rotary valve 6 rotates, the chemical liquid is discharged from the chemical liquid outlet 5c. Also the rotary valve 6
Is used not only by rotating in a fixed direction, but if the groove 6a alternately reciprocates between the chemical solution inlet 5b and the outlet 5c,
The rotary valve 6 can be inverted and used repeatedly.

On the other hand, as shown in FIG. 13, the medicine may be dropped from the outlet 5c directly onto the supply mat 14 on the heating element 11, and the supply mat 14 is extended and provided at a high position as shown in FIG. The medicine may be guided to the heating element 11. Further, the ventilation hole for introducing the cool air to the shape memory spring 9 has a fifteenth hole.
As shown in FIGS. (A) and (b), a shutter 18 is provided, and the shutter 18 is opened and closed by the movement of the operating rod 10a, and the opening of the heat insulating wall 2h provided between the heating element 11 and the shape memory spring 9 is provided. By changing the area, the drug supply time, the drug supply amount, etc. can be arbitrarily set.

The shape of the heating element 11 may be cylindrical as shown in FIG. 16 or may be saucer-shaped as shown in FIG.

The rotary drive mechanism 8 for rotating the rotary valve 6 is not limited to that of the above embodiment, and may be a mainspring or a motor, and the ratchet mechanism may be a crank mechanism, a moving wheel mechanism using a wire, or a cam mechanism.

EFFECTS OF THE INVENTION As described in detail above, since the mouth of the container containing the drug to be volatilized is closed by the fixed amount supply mechanism, the drug is not deteriorated by air and falls accidentally. There is no worry that the medicine will spill even if it is done.

In addition, since a fixed amount of drug is supplied to the heating element by the rotation of the rotary valve, it is possible to constantly volatilize the drug, and a shape memory spring made of shape memory alloy or shape memory plastic is used for the drive mechanism of the rotary valve. When using, the drive sound is not generated when the medicine is supplied, and maintenance is easy because there is no need to refuel.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is an overall perspective view, Fig. 2 is a horizontal cross-sectional view, Fig. 3 is a vertical cross-sectional view, and Fig. 4 is a perspective view of the vicinity of a constant quantity supply mechanism. Fig. 5 is the same sectional view, Fig. 6
(A), (b), and FIG. 7 (a), (b), and (c) are explanatory views of the operation, FIGS. 8 to 10 (a), (b), FIG. 11, and FIG. (A) to (c), FIGS. 13, 14 and 15 (a) (b) 1st
6 and 17 are explanatory views showing another embodiment. 3 is a container, 3a is a mouth part, 4 is a fixed amount supply mechanism, 5 is a valve body, 6 is a rotary valve, 6a is a groove, 8 is a rotary drive mechanism, 9 is a shape memory spring, and 11 is a heating element.

Claims (5)

[Claims] 1. A mouth 3a of a container 3 containing a drug to be volatilized.
The valve body 5 liquid-tightly connected to the mouth portion 3a, and the drug in the container 3 by the groove 6a that is rotatably accommodated in the valve body 5 and is provided on the peripheral surface by the rotation. A chemical vaporization device equipped with a fixed amount supply mechanism 4 comprising a rotary valve 6 for discharging a constant amount to the heating element 11. 2. A rotary drive mechanism 8 comprising a shape memory spring 9 which is deformed by radiant heat from a heating element 11 and which rotates a rotary valve 6 of the fixed quantity supply mechanism 4 by a driving force generated by this deformation. The chemical vaporization device according to claim 1, characterized in that. 3. The chemical vaporization device according to claim 2, wherein the shape memory spring is an alloy or a plastic. 4. The chemical vaporization device according to claim 1, wherein the fixed quantity supply mechanism 4 is operated by a mainspring. 5. The chemical vaporization device according to claim 1, wherein the fixed quantity supply mechanism 4 is operated by a motor.