JP2001286253A - Transpiration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transpiration device which does not use an electric source and can give a substantially constant transpiration rate, even when the ambient temperature changes. SOLUTION: This transpiration device comprising a transpiration sheet 35 having a prescribed area for holding an untranspired solution to be transpired, a button 13 for holding the transpiration sheet, and an aerosol product 11 for supplying the untranspired solution 37 to the transpiration sheet, wherein the aerosol product 11 has a regulator (a dipped tube 16 comprising a capillary tube) for spraying the untranspired solution 37 at a substantially constant and fine spraying rate. The transpiration device wherein the container 14 is charged with the untranspired solution 37 to be sprayed at a fine spraying rate and with a liquefied gas 39 for pressurizing the untranspired solution in a volume of 1 to 5 vol.% based on the full volume of the container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a transpiration device.
More specifically, the present invention relates to a vaporizer for constantly evaporating insecticides, fragrances and the like into a room.

[0002]

2. Description of the Related Art As an evaporating apparatus for evaporating an aromatic substance into a room, for example, an evaporating apparatus 100 shown in FIG. 13 is known. This is a container 1 containing a stock solution 101 to be evaporated.
02, an evaporating dish 103 made of filter paper or the like provided at the upper end of the container, and a wick 104 for guiding the undiluted solution 101 from inside the container 102 to the evaporating dish 103 by utilizing the capillary phenomenon. As the core 104, a cloth piece or a cotton core is used.

[0003] The undiluted solution 101 in the container 102 is impregnated in the evaporating dish 103 through the wick 104, and the undiluted solution is evaporated in the air. As the evaporating dish 103 dries, the stock solution 101 is sequentially supplied from the container 102.

[0004] On the other hand, there are also known insecticides of the type in which an active ingredient is vaporized from a solid. This material is suspended in a closet, for example, and the component that kills insects attached to clothes is gradually diffused, or the component that kills mosquitoes is vaporized by heating the mat-like material with an electric heater. There is also known a method in which an undiluted solution is dropped on an evaporating dish, and the evaporating dish is heated by an electric heater to evaporate components that kill mosquitoes.

[0005]

The transpiration apparatus 100 shown in FIG. 13 has a simple structure and can easily supply the undiluted solution 101, but has a problem that the transpiration amount greatly changes depending on the ambient temperature and humidity. . That is, the amount of transpiration differs greatly between summer when the temperature is high and winter when the temperature is low, so that it is difficult to apply to fragrances used throughout the year. In the case of a type in which an active ingredient is vaporized from a solid, when the vaporization proceeds and the volume decreases, the surface area also decreases, so that the amount of transpiration gradually decreases. Further, a device for evaporating the undiluted solution with a heater requires a power source, and the amount of evaporation varies greatly depending on the ambient temperature.

The present invention does not use a power source or a heat source,
Further, it is another technical object of the present invention to provide a vaporizing apparatus in which the amount of transpiration does not largely change even when the ambient temperature changes, and an almost constant amount of transpiration is always obtained.

[0007]

According to a first aspect of the present invention, there is provided an evaporating apparatus comprising: an evaporating surface having a predetermined width for holding an undiluted solution to be evaporated; and an aerosol for supplying the undiluted solution to the evaporating surface. Aerosol product having a regulator for ejecting a small amount of a stock solution in a substantially constant amount.

[0008] In the container, a stock solution to be sprayed in a minute amount;
It is preferable to fill with a propellant containing 1 to 5% by volume of the liquefied gas based on the full filling amount of the container (Claim 2). In addition, the container may be filled with a stock solution to be sprayed in a small amount and a propellant containing a compressed gas of 1 to 5% by weight of the stock solution weight.

[0009]

In the evaporator according to the present invention (claim 1), since the aerosol product is provided with the regulator, the undiluted solution injected from the aerosol product is always a constant amount. Therefore, regardless of the surrounding temperature and humidity,
A constant amount of undiluted solution can always be supplied to the evaporation surface. Therefore, the amount of the undiluted liquid is kept almost constant. In the transpiration surface, the area impregnated with the undiluted solution changes according to the ambient temperature and humidity, but the transpiration amount itself is substantially constant because it depends on the amount of undiluted solution supplied.

[0010] In a vaporizer in which a container is filled with a stock solution and a propellant containing a liquefied gas at 1 to 5% by volume of the container's full charge, the pressure in the container decreases due to a change in the remaining amount of the stock solution. And a substantially constant pressure can be obtained even when almost all of the stock solution is injected. Therefore, the ejection amount is maintained more constant. Further, when a propellant containing a compressed gas of 1 to 5% by weight of the stock solution is used (claim 3), the pressure fluctuation due to the temperature change is small due to the action of the compressed gas, and the remaining stock solution is controlled by the action of the regulator. Even if is low,
An almost constant injection amount can be obtained.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a transpiration apparatus according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing one embodiment of the evaporator of the present invention, FIG. 2 is an enlarged cross-sectional view of a valve used in the evaporator of FIG. 1, and FIG. 3 is an enlarged cross-section of a dip tube used in the evaporator of FIG. FIG. 4
4a and 4b are explanatory views showing the operation of the evaporator of FIG. 1 under different environments, FIG. 5 is a sectional view showing another embodiment of the evaporator of the present invention, and FIGS. 6a and 6b are the evaporators thereof. FIG. 7 is an explanatory view showing the operation of the apparatus under different environments, FIG. 7 is a perspective view showing still another embodiment of the evaporation apparatus of the present invention, and FIG. 8 is a sectional view showing an example of a valve with a regulator according to the present invention. , FIG. 9 is a partially cutaway front view showing still another embodiment of the evaporation apparatus of the present invention, and FIG. 10a is a partially cutaway sectional view showing still another embodiment of the evaporation apparatus of the present invention.
FIG. 10b is a partially cutaway sectional view showing the operation of the evaporator under different environments, and FIGS. 11 and 12 are graphs showing the effects of the embodiment of the evaporator of the present invention.

The evaporating apparatus 10 shown in FIG. 1 comprises an aerosol product 11 and a button 13 which is attached to a stem 12 of the aerosol product and also serves as an evaporator.
The aerosol product 11 includes a container 14, a valve 15 attached to an upper portion of the container, a dip tube 16 connected to a lower portion of the valve 15, and a container filled therein.
And the contents 17.

As the container 14, a conventionally known metal pressure-resistant container or the like is used. A container made of synthetic resin or glass may be used. When the transparent container 14 is used, the remaining amount of the contents 17 can be easily confirmed. As shown in FIG. 2, an opening 20 is provided at the upper end of the container 14, and a bead 21 is provided around the opening.

As shown in FIG. 2, for example, the valve 15 includes a mounting cup 23 having a flange 22 that is crimped to a bead portion 21 of the container 14, a housing 24 held by the mounting cup, A stem 12 which is housed in a vertically movable manner,
This is a conventionally known spring including a spring 25 for urging the stem upward and a valve rubber 27 for closing the stem hole 26. When the stem 12 is pushed down, the stem hole 26 opens, and the container 1
The inside and outside communicate with each other. Reference numeral 28 denotes a gasket for sealing between the mounting cup 23 and the container 14.

A lower portion of the housing 24 is provided with a tubular tube holding portion 29, and a hole 30 of the tube holding portion 29 is provided.
The upper end of the dip tube 16 composed of a capillary tube is inserted and fixed therein. The hole 30 is tapered downward. Dip tube 16
As shown in FIG. 3, the diameter of the inner hole 31 is 10 to 100 μm.
and a capillary tube (micro) which is extremely thin compared to a normal dip tube. For this reason, the dip tube 16 functions as a regulator that keeps the amount of ejection constant. The regulator is not limited to a capillary tube, and a conventionally known valve with a regulator (see FIG. 8) or the like can also be used as described later. Further, a plurality of inner holes 31 of the capillary tube may be provided. Dip tube 1
6 has an outer diameter of about 0.1 to 2 mm. The length is about 100 mm to 500 mm or more, and a length much longer than a normal one is employed. For this reason, as shown in FIG. 1, for example, a portion 16a is provided in which the middle is wound up many times. In this embodiment, since the bottom portion 14a of the container 14 is curved so that the center portion is upwardly convex, the dip tube 1
The open end 16b of 6 is located at the deepest peripheral portion of the container 14.

The button 13 of the evaporation device 10 shown in FIG.
In addition to the conventional function of operating the valve 15 of the aerosol product 11, it has a function as a transpiration surface that impregnates and holds the undiluted solution ejected from the stem 12 and evaporates slowly. That is, in this embodiment, a dish-shaped recess 34 is provided on the upper surface of the button, and the evaporation sheet 35
Is housed. As the transpiration sheet 35, a porous sheet that causes a capillary phenomenon in the stock solution such as a fibrous material such as filter paper or shoji paper or a sponge-like material is used. Is preferable. Further, the size, thickness, material, and the like of the evaporation sheet 35 are selected so that the entire amount of the stock solution supplied from the aerosol product 11 can be evaporated regardless of external conditions such as temperature and humidity. Also,
A bead portion 21 at the upper end of the container 14 is provided below the button 13.
Alternatively, an engagement projection 36 is provided, which is engaged with the flange 22 of the mounting cup. That is, the aerosol product 11 is a so-called full-injection type.

The contents 17 in the container 14 are composed of a stock solution 37 to be jetted and a small amount of liquefied gas 39 having a specific gravity lower than that of the stock solution 37.
It is composed of Since the liquefied gas 39 has a lower specific gravity than the stock solution 37, it is floating on the surface of the stock solution 37, and the upper space 38 is filled with the gas phase of the liquefied gas.
The amount of the liquefied gas 39 is such that the pressure in the container does not decrease even when almost all of the gas is injected, for example, about 1 to 5% by volume of the full filling amount of the container. Liquefied gas 39 as propellant
The reason for using is to prevent the internal pressure from dropping significantly even when the volume of the gas phase portion (upper space 38) increases when the stock solution 37 decreases due to the injection. A compressed gas may be blended in order to reduce the change in product pressure due to temperature and to keep the injection amount constant. When only the compressed gas is used as the propellant, it is preferable to fill 1 to 5% by weight of the weight of the stock solution, and further, it has a pressure of 0.2 MPa (gauge pressure) or more when almost all of the stock solution is injected. It is preferred to fill to a degree. If the product pressure is about 0.2 MPa, the injection amount can be made constant by the regulator.

As the stock solution, active ingredients such as an insecticide, a deodorant, and a fragrance are prepared by adding water, a lower alcohol, a polyhydric alcohol,
What was melt | dissolved in solvents, such as volatile silicone oil, hydrocarbon, and ester oil, is used. As the liquefied gas, a liquefied petroleum gas such as propane or butane is used. The liquefied gas is hardly soluble in the stock solution, and has a lower specific gravity than the stock solution. As a result, the liquefied gas itself is not ejected to the outside, and the liquefied gas forms a thin layer on the undiluted solution, vaporizes when the space in the container increases due to the ejection, and keeps the pressure constant. do. As the compressed gas, nitrogen, air, carbon dioxide or the like is used.

When the button 13 is depressed, the engaging projection 36 of the evaporating apparatus 10 causes the bead 21 or the flange 2 to move.
2 to lock the rise of the button 13 and
5 is kept open. As a result, the stock solution 3 pressurized by the gas phase portion of the liquefied gas 36 (and the compressed gas 38)
7 is ejected from the stem 12 through the dip tube 16 and the valve 15. At this time, since the dip tube 16 is formed of a capillary tube, the pipe resistance is large, and the flow rate is, for example, 0.5 to 10
g / day, very low. That is, in this embodiment, the dip tube 16 functions as a regulator. The undiluted solution 37 ejected from the stem 12 is impregnated on the back surface side of the evaporation sheet 35, spreads by capillary action, and evaporates gradually from the upper surface into a room or the like.

With the ejection of the stock solution, the stock solution 37 in the container 14
Decrease. Normally, when almost all of the stock solution is injected, the pressure decreases. However, in this embodiment, the undiluted solution 3
Since the amount of the liquefied gas 39 that does not decrease the pressure even when almost the entire amount of the undiluted solution is jetted onto the surface of 7, the pressure hardly decreases for a long time or a long time, and the internal pressure is kept constant. Therefore, the ejection amount of the stock solution from the stem 12 is maintained substantially constant over a long period of time.

As described above, in the evaporating apparatus 10, since the amount of the stock solution supplied from the container 14 to the evaporating sheet 35 is substantially constant, the amount of evaporating is also maintained substantially constant regardless of the surrounding temperature and humidity. Is done. In the summertime when the temperature is high, as shown in FIG. 4A, the evaporation from the evaporation sheet 35 is fast, and the undiluted liquid impregnated in the evaporation sheet 35 evaporates before spreading to the entire evaporation sheet 35. Therefore, the area required for the actual evaporation is reduced. On the other hand, in winter when the temperature is low, as shown in FIG. 4B, the evaporation rate is slow, and the area required for evaporating the stock solution impregnated in the evaporation sheet 35 becomes large. Therefore, the area of the transpiration sheet should be sufficiently large so that the amount of transpiration is not limited by the transpiration area in winter. In the case of the conventional product shown in FIG. 13, since the suction speed changes in a dry state of the evaporation sheet, the amount of evaporation increases as the temperature is higher and the evaporation speed is higher. Although the area of the stock solution impregnated in the evaporation sheet changes at the top, the supply amount from the aerosol product 11 is constant, and the entire amount is evaporated, so that the evaporation amount is almost the same in winter and summer. From a different point of view, the variation in the amount of transpiration per area that differs between summer and winter can be regarded as keeping the total transpiration constant by changing the transpiration area.

The evaporating apparatus 40 shown in FIG. 5 employs an evaporating sheet 35 in which the depth of the concave portion 34 of the button 13 is large and the evaporating sheet 35 becomes thicker in a stepwise manner toward the peripheral portion. The dip tube 16 has a spiral shape. Since the evaporation sheet 35 is made thicker as it reaches the periphery, the force with which the undiluted solution is sucked up on the surface by capillary action is weaker as it goes to the periphery. Therefore, the amount of transpiration is large in the thin central portion 35a, and small in the peripheral portion 35c. The intermediate portion 35b is in an intermediate state between them. Therefore, in summer when transpiration is fast,
As shown in FIG. 6a, before reaching the peripheral portion 35c, the central portion 35
Evaporate at a. Conversely, in winter, the stock solution reaches the peripheral portion 35c as shown in FIG. 6b. Therefore, the transpiration area becomes large. However, irrespective of such apparent fluctuations in the transpiration area, the transpiration volume from the aerosol product 11 is almost constant, so that the transpiration volume in winter and in summer is almost the same.

FIG. 7 shows a vaporizing apparatus having a large-area vaporizing sheet 41 on the upper surface. Also in summer or when the transpiration rate is high, the saturating area S
In the winter or when the humidity is high, the area of the region S2 in which the undiluted solution is impregnated increases in the winter or when the humidity is high. When the regions S1 and S2 impregnated with the undiluted solution can be seen in this manner, the change in the indoor humidity can be visually shown by the change in the area of the regions.

FIG. 8 shows an example of a valve 44 having a (injection amount) regulator 43 which can be used in the evaporation apparatus of the present invention. The valve 44 adjusts the size of the hole 47 for introducing the undiluted solution into the housing 46 by moving the piston 45 up and down by the pressure in the container.

The transpiration apparatus 50 shown in FIG. 9 includes a transpiration sheet 51 having upper and lower transpiration sheets 51a, an intermediate transpiration sheet 51b and a lower transpiration sheet 51c, which resemble the shape of a plant leaf. Then, a stock solution is sprayed from the aerosol product 11 to the lower end of the evaporation sheet 51. The undiluted solution jetted to the lower end of the transpiration sheet 51 is sequentially sucked upward by capillary action,
Evaporate throughout 1. However, in the transpiration sheet 51 arranged above and below, since the suction force due to the capillary phenomenon becomes smaller as going upward, the lower transpiration sheet 5 is used in summer.
It evaporates in a small area of only 1c, and in winter, is sucked up to the upper evaporative sheet 51a and evaporates in a large area.
Therefore, the amount of transpiration is made uniform regardless of the season.

The evaporating device 60 shown in FIG. 10A includes an evaporating cover 61 made of a porous material such as unglazed pottery, and the undiluted liquid is ejected from the aerosol product 11 into the inside thereof. It can increase the area of transpiration and is excellent in appearance design. Since the transpiration rate is high in summer, the area of the undiluted region S1 of the undiluted solution is small (see FIG. 10a), and the area of the impregnated region S2 is large in winter (see FIG. 10b).

[0027]

EXAMPLES According to the following aerosol formulation and material specifications, a micro-jet aerosol product used in the evaporation apparatus of the present invention was manufactured. [Aerosol formulation] Stock solution: water 50 g Propellant: LPG 1.2 g (2 ml) [Material specification] Container: Metal pressure-resistant container (full filling amount: 100 ml) Stem: Inner diameter of stem hole (reference numeral 26 in FIG. 2). 4m
m Housing: Inner diameter of the housing pilot hole 0.3 mm, without vapor tap Taper shape from the housing pilot hole to the rear end of the housing lower end, 0.8 mm outer diameter and 0.04 mm inner diameter in this part
A (40 μm) microcapillary tube was inserted as a dip tube. The length of the microcapillary tube was 100 mm, 200 mm, and 450 mm. Button: Full injection type (locked down state. See Fig. 1) Filling pressure: 0.35MPa

The amount of transpiration with respect to the injection time when the total amount of the aerosol product manufactured by the above aerosol formulation and material formulation was sprayed was measured. The amount of transpiration was obtained by measuring the weight of the aerosol product at predetermined time intervals and calculating the difference from the weight of the propellant. The results are shown in Table 1 and the graph of FIG.

[Table 1]

Further, the amount of transpiration per unit time was calculated based on the data shown in Table 1 above. The results are shown in Table 2 and the graph of FIG.

[Table 2]

As is clear from the above Table 1 and the graph of FIG. 11, the total injection amount increases at a substantially constant rate over time. Further, from Table 2 and the graph of FIG. 12, the amount of injection per unit time is small since the amount of transpiration is small because the transpiration portion is impregnated immediately after the injection, but after a certain period of time, the amount of transpiration is stabilized, It can be seen that even if the residual amount of

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the evaporation apparatus of the present invention.

FIG. 2 is an enlarged sectional view of a valve used in the evaporating apparatus of FIG.

FIG. 3 is an enlarged sectional view of a dip tube used in the apparatus of FIG.

4a and 4b are illustrations showing the operation of the evaporator of FIG. 1 under different environments.

FIG. 5 is a sectional view showing another embodiment of the evaporation device of the present invention.

6a and 6b are illustrations showing the operation of the evaporator of FIG. 5 under different environments.

FIG. 7 is a perspective view showing still another embodiment of the evaporation device of the present invention.

FIG. 8 is a sectional view showing an example of a valve with a regulator according to the present invention.

FIG. 9 is a partially cutaway front view showing still another embodiment of the evaporation apparatus of the present invention.

FIG. 10a is a partially cut-away sectional view showing still another embodiment of the evaporating apparatus of the present invention, and FIG. 10b is a partially cut-away sectional view showing the operation of the evaporating apparatus under different environments. FIG.

FIG. 11 is a graph showing the effect of the embodiment of the evaporation apparatus of the present invention.

FIG. 12 is a graph showing the effect of the embodiment of the evaporation apparatus of the present invention.

FIG. 13 is a perspective view showing an example of a conventional evaporation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Evaporation apparatus 11 Aerosol product 12 Stem 13 Button 14 Container 14a Bottom part 15 Valve 16 Dip tube 16a Wound part 16b Open end 17 Contents 20 Opening 21 Bead part 22 Flange 23 Mounting cup 24 Housing 25 Spring 26 Stem hole 27 Valve Rubber 28 Gasket 29 Tube holding part 30 Hole 31 Inner hole 34 Recess 35 Evaporation sheet 35a Central part 35b Intermediate part 35c Peripheral part 36 Engagement projection 37 Stock solution 38 Upper space (gas phase part) 39 Liquefied gas 40 Evaporator 41 Evaporation sheet 43 Regulator 44 Regulator valve 46 Housing 47 Hole 50 Evaporation device 51 Evaporation sheet 51a Upper transpiration sheet 51b Intermediate transpiration sheet 51c Lower transpiration sheet 60 Evaporation device 61 Evaporation cover

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2B121 CA02 CA16 CA31 CA41 CA50 CA53 CB07 CB65 CC02 CC31 EA01 FA04 4C002 AA01 BB02 DD03 DD20 EE07 KK01 4F033 BA02 BA03 PA06 QA05

Claims (3)

[Claims] An aerosol product for supplying an undiluted solution to the evaporation surface for holding an undiluted solution to be evaporated is provided with an aerosol product for supplying the undiluted solution to the evaporation surface. Evaporation device with a regulator that ejects a small amount by a fixed amount. 2. An undiluted solution to be sprayed in a small amount into the container;
The evaporating apparatus according to claim 1, wherein the evaporating apparatus is filled with a propellant containing 1 to 5% by volume of the liquefied gas based on the full filling amount of the container. 3. An undiluted solution to be sprayed in a small amount into the container;
The evaporating apparatus according to claim 1, wherein the evaporating apparatus is filled with a propellant containing a compressed gas of 1 to 5% by weight of the stock solution.