JPWO2014010596A1 - Mist release pin member containing deliquescent component and electrostatic atomizer using the same - Google Patents

Abstract

An electrostatic atomizer comprising a mist discharge pin member and a power source for applying a negative voltage to the mist discharge pin member, wherein the mist discharge pin member is made of a porous body or a fiber molded body, It is characterized by containing a deliquescent component inside.

Description

The present invention relates to a mist discharge pin member capable of discharging a large amount of mist to the outside without supplying an aqueous solution from the outside in an electrostatic atomization apparatus for discharging mist to the outside, and an electrostatic fog using the same. The present invention relates to a conversion device.

2. Description of the Related Art Conventionally, an electrostatic atomizer that atomizes an aqueous solution containing a nonvolatile functional component by applying a high voltage and releases it as a mist is known. As the aqueous solution, for example, water containing functional components such as vitamin C and amino acids, aroma oil, deodorant and the like are used.
Generally, an electrostatic atomizer transports an aqueous solution from a water reservoir to the tip of the mist discharge pin member by capillary action, and applies a voltage to the mist discharge pin member to discharge the mist from the tip.
For example, Patent Document 1 includes a water tank that contains water, an application electrode that applies a voltage to the water, a water absorber that contacts the water and has a sharp atomizing portion at one end thereof, A high voltage generator that applies a voltage to the application electrode to cause the water absorption body to atomize the water sucked up from the water tank by capillary action in the atomization section of the water absorption body to generate a mist having a nanometer size particle diameter. The electrostatic atomizer which is provided with the ion exchange part for removing a mineral component in the water conveyance path | route from a water tank to the atomization part of a water absorption body is described.
In addition, instead of providing a water tank for storing water, there is a type in which a Peltier element is provided to collect moisture in the air by a cooling effect.

JP 2009-255091 A

However, in the conventional electrostatic atomizer, in order to atomize (mist discharge) the aqueous solution from the water absorbent (mist discharge pin member), it is always necessary to supply the aqueous solution from the water tank to the water absorbent. However, there is a problem in that the mist is not released from the water absorbent when it stops, and the maintenance is troublesome.
Furthermore, when the mist release pin member is dried, mineral components and the like contained in the aqueous solution are clogged in the mist release pin member, hindering the transport of water due to capillary action after reuse, and inhibiting mist release. There was also a problem.
In addition, the method of providing a Peltier element and collecting moisture in the air by a cooling effect requires a cost for installing the Peltier element.

In order to solve the above-mentioned problems, the present inventor has focused on the mist release pin member for releasing mist and as a result of intensive investigation, by adding a deliquescence component to the mist release pin member,
A mist releasing pin member capable of releasing a large amount of mist without supplying an aqueous solution from the outside has been developed and the present invention has been completed.

(1) The mist release pin member of the present invention is a mist release pin member that releases mist to the outside, and the mist release pin member is made of a porous body or a fiber molded body, and has a deliquescent component therein. It is characterized by containing.
(2) The mist discharge pin member of the present invention is the mist discharge pin member according to (1),
Furthermore, it has a conductive component.
(3) In the mist release pin member of the present invention, in the above (1) or (2), the deliquescent component is polyphosphate, potassium phosphate, citric acid, sodium hydroxide, potassium carbonate, magnesium chloride, chloride It is one or more components selected from calcium and phosphoric acid.
(4) The electrostatic atomizer of the present invention is an electrostatic atomizer including a mist discharge pin member and a power source for applying a negative voltage to the mist discharge pin member, the mist discharge pin member Is characterized in that the mist release pin member according to any one of (1) to (3) is used.

According to the present invention, since the mist releasing pin member has a deliquescent component, the supply of the aqueous solution to the mist releasing pin member becomes unnecessary, and the moisture in the air is absorbed and converted from the mist releasing pin member to the mist. Can be released to the outside.
At the same time, it is no longer necessary to supply an aqueous solution to the mist release pin member, so that mineral components contained in the aqueous solution are not clogged in the mist release pin member and can be stably maintained for a long period of time. Mist can be released.
Moreover, the installation of a water tank and a Peltier element are not required, and the electrostatic atomizer can be made extremely compact and inexpensive.

It is a mist discharge pin member concerning an embodiment of the present invention, (a) is a schematic explanatory sectional view of a mist discharge pin member of Embodiment 1, and (b) is a schematic explanatory cross section of a mist discharge pin member of Embodiment 2. It is a figure and (c) is a schematic explanatory sectional drawing of the mist discharge | release pin member of Embodiment 3. FIG. It is a manufacturing method of the mist discharge | release pin member which concerns on Example 2 of this invention, (a) is schematic explanatory sectional drawing of the mist discharge | release pin member of Embodiment 2, (b) is the mist discharge | release pin member of Embodiment 2. FIG. It is the graph which showed the relationship between the retention time of a mist discharge | release pin member, and the amount of water retention about the mist discharge | release pin member which concerns on Example 1 of this invention. It is the schematic which shows the evaluation method about the liquid dripping of a mist discharge | release pin member. It is a schematic explanatory drawing which shows the measuring apparatus of the mist discharge | release amount of a mist discharge | release pin member. It is a graph which shows the relationship between the amount of water retention and mist discharge | release amount about the mist discharge | release pin member which concerns on Example 1. FIG.

Hereinafter, the present invention will be described in detail with reference to embodiments for carrying out the invention.
<Mist release pin member>
The mist discharge pin member is a member that discharges mist to the outside in the electrostatic atomizer, and includes a porous body or a fiber molded body structure described below.
The mist release pin member plays a role of discharging an aqueous solution held by the mist release pin member and an aqueous solution having functional components (both are referred to as an aqueous solution in the present specification) from the tip portion to the outside as a mist. .

A porous body refers to a material having innumerable minute pores inside, and the porous body is an aggregate of innumerable micropores rather than an aggregate of independent microbubbles. It is preferable to use it for retaining a large amount of aqueous solution.
For example, the porous body which sintered ceramic particle | grains and the metal particle as a rod-shaped body, and what formed foams, such as a urethane resin and a styrene resin, as a rod-shaped body are mentioned.

The fiber molded body means a single rod-shaped body obtained by bundling a large number of filaments and cotton-like fibrous materials.
These fibrous materials can be partially or wholly bonded by self-bonding or an adhesive (for example, acrylic, urethane resin) or the like to form an integral pin member.
Further, the aqueous solution can be held in the voids of the fibrous material.
For example, ceramic fiber (ceramic fiber, glass fiber, etc.), organic fiber (polyester fiber, rayon fiber, nylon fiber, etc.), conductive fiber (carbon fiber, metal fiber (eg, stainless steel fiber, copper fiber, titanium fiber etc.) or What mixed these and formed as a rod-shaped body is mentioned.
The outer diameter of the fibrous material is 0.2 mm or less, preferably 0.1 mm or less.

Ceramics include single oxides such as silica, alumina, magnesia, titania, zirconia, or mullite, zeolite, bentonite, ceviolite, attapulgite, sillimanite, kaolin, sericite, diatomaceous earth, feldspar, glacial viscosity, silicate Examples thereof include, but are not limited to, any one of compounds (perlite, vanamicurite, sericite, etc.) or the like, or a combination including at least one of the foregoing.

Examples of the conductive fiber include metals such as stainless steel, copper, titanium, tin, platinum, gold, and silver, and fibers such as graphite.
Since these conductive materials such as conductive fibers improve the conductivity of the mist releasing pin member, it is desirable to mix them in a part of the structure of the porous body or the fiber molded body.
Examples of the fibrous material include conductive cotton obtained by electroless plating on the surface of carbon fiber or resin cotton.
In place of the conductive fiber, a powder may be used as long as it is a conductive substance.

Examples of the synthetic resin material include polyester, nylon, rayon, urethane (including polyurethane), acrylic, and polypropylene, but are not limited thereto.
Examples of natural resin materials include, but are not limited to, pulp fibers, cotton, wool fibers, hemp fibers and the like.

Further, the fiber molded body may be a rod-shaped body formed by bundling a plurality of hollow fibers.
The hollow fiber refers to a straw-like fiber having a cavity inside, and is used synonymously with an ultrafine tube, a capillary, a hollow fiber, or the like.
The outer diameter of the hollow fiber is 0.2 mm or less, preferably 0.1 mm or less, and the inner diameter is preferably 10 μm or more and 50 μm or less.
The raw material used for the hollow fiber may be either an organic material or an inorganic material as long as it can be processed into a hollow fiber. For example, nylon 6 (registered trademark), nylon 66 (registered trademark), aromatic polyamide, etc. Polyamide fibers, polyethylene terephthalate, polybutylene terephthalate, polyester fibers such as polylactic acid, polyglycolic acid and polycarbonate, acrylic fibers such as polyacrylonitrile, polyolefin fibers such as polyethylene and polypropylene, Polymethacrylate fibers such as polymethylmethacrylate, polyvinyl alcohol fibers, polyvinylidene chloride fibers, polyvinyl chloride fibers, polyurethane fibers, phenol fibers, polyvinylidene fluoride and polytetra Fluoro Fluorine-based fibers consisting of styrene, etc., and materials such as carbon fiber such as carbon nanotubes.

<Shape>
Examples of the shape of the mist release pin member include those in which the porous body or fiber molded body is formed as a rod-like body such as a cylinder, but the shape is not limited to this, and an elliptical column shape, a conical shape, a rectangular column It may be a shape or the like.
Further, the tip portion of the mist discharge pin member may be planar, but may be rounded or curved.

The mist release pin member has different retention characteristics (water retention) of the aqueous solution depending on the material or structure of the porous body or fiber molded body, but the retention ratio of the aqueous solution is preferably about 30 to 110% in any material. .
Particularly by material, 30 to 80% is preferable for ceramic materials, 10 to 60% is preferable for metal materials, and 70 to 110% is preferable for synthetic resin materials and natural resin materials.
The aqueous solution retention rate is the mass when the mist releasing pin member is in a dry state,
The percentage of the total amount of aqueous solution contained in the mist release pin member when the mist release pin member is in a saturated state.

<Deliquescent component>
Moreover, the mist discharge | release pin member of this invention contains the deliquescent component in the clearance gap between a porous body and a fiber molded object.
Examples of the deliquescent component to be contained in the mist releasing pin member include polyphosphate, potassium phosphate, citric acid, sodium hydroxide, potassium carbonate, magnesium chloride, calcium chloride, phosphoric acid, and phosphate.
As the polyphosphate, potassium polyphosphate, calcium polyphosphate, and magnesium polyphosphate are preferably selected, and potassium phosphate is preferably selected as the phosphate.
Moreover, sodium hexametaphosphate, potassium hexametaphosphate, etc. can also be used conveniently.
Since these components have deliquescence, they serve to absorb moisture in the atmosphere and hold it as an aqueous solution in the mist release pin member.
As a method for incorporating the deliquescent component into the mist releasing pin member, an aqueous solution of the deliquescent component is prepared, and the mist releasing pin member is immersed in this for about 1 to 12 hours.
Thereafter, the mist release pin member containing the deliquescent component is dried at 50 to 60 ° C. for about 1 to 12 hours, and the moisture of the mist release pin member is blown off.
After drying, it is preferable that the mist release pin member contains about 1 to 50% deliquescent component with respect to the total mass of the mist release pin member.
This is because if the deliquescent component is less than 1%, moisture is absorbed from the air and sufficient mist cannot be released from the discharge pin member.
On the other hand, if the deliquescent component exceeds 50%, moisture is absorbed too much from the air, and liquid dripping from the discharge pin member may occur.

<Conductive material>
In addition, in order to provide electroconductivity, the mist discharge | release pin member of this invention can also contain substances, such as electroconductive fiber and powder. For example, conductive materials such as metals, metal oxides, metal fine powders or dispersions of conductive materials such as carbon, conductive polymers, metal fibers, and carbon fibers can be used.
Moreover, an electroconductive graphite compounding material is also mentioned.
The conductive graphite compound refers to a conductive material containing conductive graphite.
As the conductive material, in addition to the conductive graphite, a conductive material such as polyaniline or polyacetylene may be used.

<Electrostatic atomizer>
The electrostatic atomizer which concerns on this invention atomizes aqueous solution from the front-end | tip part of a mist discharge | release pin member by applying a voltage to a mist discharge | release pin member, and discharges it as mist.

<Applied power supply>
In the electrostatic atomizer, a DC voltage is applied to the mist discharge pin member in order to promote the discharge of the mist from the mist discharge pin member.
As a power source for applying a DC voltage to the mist discharge pin member, for example, a power source that generates a DC negative voltage of about 3 to 10 kV is preferably cited. The negative electrode is connected to the mist discharge pin member via a conductor, The discharge pin member is negatively charged.
By connecting the negative electrode to the mist release pin member, the current flows in search of the place where it is most likely to be discharged, and normally, using the property of gathering in places where the tip is pointed or where electrical conductivity is excellent, such as a conductor, It will gather into a mist discharge pin member.
In this way, by applying a voltage to the mist discharge pin member, it is possible to discharge the mist from the mist discharge pin member to the outside by a natural discharge phenomenon.

<Aqueous solution released as mist>
Examples of aqueous solutions released as mist include vitamin C (L-ascorbic acid), vitamin C esters ((magnesium L-ascorbate phosphate, sodium L-ascorbate phosphate, magnesium ascorbate phosphate, etc.), vitamin A, vitamin B , Vitamin D, Vitamin Dα-riboic acid, amino acids, tea extract (catechin, tannin, saponin, theanine, caffeine, etc.), hyaluronic acid, collagen, aroma essential oil (lavender, rosemary, lemongrass, tea tree, sage, clove) , Orange, grapefruit, cinnamon, jasmine, etc.), coffee beans, tea confectionery, wasabi, hinokitiol, chitin, chitosan, propolis, etc., and other inorganic substances (inorganic soluble ingredients) are silver or Salt It is.
Moreover, nano colloidal solutions, such as a platinum nanoparticle and palladium nanoparticle, can also be used.
These components such as vitamin C and platinum nanoparticles are previously contained in the pin member when the mist release pin member is manufactured.

Hereinafter, embodiments of the mist discharge pin member of the present invention will be specifically described.
The mist release pin member containing a deliquescent component is in a state where the deliquescent component absorbs moisture in, for example, the atmosphere (for example, in the air or a sealed space) and retains the water (water retention state).
Then, by applying a negative voltage to the mist discharge pin member, a large amount of mist holding negative charges can be released from the tip of the mist discharge pin member kept in a water retaining state.

<Mist release pin member of Embodiment 1>
The mist discharge pin member of Embodiment 1 is shown in FIG.
The mist release pin member of Embodiment 1 is a pin member of a single fiber molded body by bundling polyester fibers via an adhesive.
The outer diameter of the mist discharge pin member having such a structure was 4.5 mm and the length was 25 mm.
And the deliquescence component of an Example was contained in the clearance gap between the pin members bundled with the polyester fiber.

<Mist release pin member of Embodiment 2>
A mist discharge pin member of Embodiment 2 is shown in FIG.
A core material 11 in which carbon fibers are bundled at the center, and a sheath material 12 in which polyester fibers are bundled to form a layer is disposed around the core material 11 to form a two-layered fiber molded body.
The outer diameter of the core material 11 was 1.5 mm to 2.0 mm, the thickness of the sheath material 12 was 2.5 mm to 3.0 mm, and the outer diameter of the mist discharge pin member was 4.5 mm and the length was 25 mm.
The mist discharge pin member having such a structure was manufactured by a method as shown in FIG.
A sheath material 12 in which polyester fibers were bundled around the core material 11 was sent to a drawing die 13 and integrated.
And the deliquescent component of the Example was contained in the gap | interval of the sheath material 12 of a pin member.

<Mist release pin member of Embodiment 3>
A mist discharge pin member of Embodiment 3 is shown in FIG.
The mist release pin member of Embodiment 3 is similar to the mist release pin member of Embodiment 1 in that polyester fibers are bundled via an adhesive to form a single fiber molded pin member. The difference is that graphite is impregnated in the center of the mist discharge pin member.
This is because the conductivity of the mist discharge pin member is improved by impregnating the central portion with graphite.

<Example 1>
[Potassium polyphosphate]
In Example 1, the mist release pin member of Embodiment 1 was vacuum-dried to make the moisture zero,
It was immersed in a 30% strength potassium polyphosphate solution for 12 hours and contained in a sheath 12 of polyester fibers arranged around.
Then, as a result of drying at 50 ° C. for 10 hours, a mist releasing pin member containing 1% potassium polyphosphate (deliquescent component) with respect to the total mass of the mist releasing pin member was obtained.
And as shown to Fig.1 (a), the negative voltage of 6 kV was applied to the mist discharge | release pin member, and the mist was discharged | emitted from the mist discharge | release pin member.

<Example 2>
[Potassium polyphosphate]
In Example 2, the mist release pin member of Embodiment 2 was vacuum-dried to make the moisture zero,
Mist release pin containing 35% potassium polyphosphate (deliquescent component) with respect to the total mass of the pin member, immersed in a 60% concentration potassium polyphosphate solution for 5 hours and dried at 60 ° C. for 8 hours. A member was prepared, and a negative voltage of 6 kV was applied to the pin member to release mist from the mist discharge pin member.

<Example 3>
[Potassium phosphate]
In Example 3, the mist release pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 30% strength potassium phosphate solution for 12 hours, and dried at 60 ° C. for 10 hours to obtain the total mass of the pin member. On the other hand, a mist release pin member containing 3% potassium phosphate (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Example 4>
[Potassium phosphate]
In Example 4, the mist release pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 60% strength potassium phosphate solution for 5 hours, and dried at 60 ° C. for 10 hours to obtain the total mass of the pin member. On the other hand, a mist release pin member containing 50% potassium phosphate (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Example 5>
[citric acid]
In Example 5, the mist release pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 10% strength citric acid solution for 12 hours, and dried at 60 ° C. for 12 hours to obtain the total mass of the pin member. In contrast, a mist release pin member containing 1% citric acid (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Example 6>
[citric acid]
In Example 6, the mist release pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 50% strength citric acid solution for 8 hours, and dried at 60 ° C. for 12 hours to obtain the total mass of the pin member. On the other hand, a mist release pin member containing 40% citric acid (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Example 7>
[Calcium chloride]
In Example 7, the mist release pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 50% strength calcium chloride solution for 5 hours, and dried at 60 ° C. for 10 hours to obtain the total mass of the pin member. In contrast, a mist release pin member containing 35% calcium chloride (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Example 8>
[phosphoric acid]
In Example 8, the mist releasing pin member of Embodiment 2 was vacuum-dried to zero moisture, immersed in a 50% strength phosphoric acid solution for 8 hours, and dried at 60 ° C. for 8 hours to obtain the total mass of the pin member. On the other hand, a mist release pin member containing 40% phosphoric acid (deliquescent component) was prepared, and a negative voltage of 6 kV was applied to the pin member.

<Water retention evaluation of mist release pin>
It was evaluated whether the mist release pin of the example could absorb moisture in the atmosphere and store (store) the moisture in the mist release pin as moisture.
Specifically, in the mist release pin of Example 1, its water retention and mist release amount were evaluated.
The results are shown in Table 1 and FIGS.
As an evaluation method, the mist release pin of Example 1 was dried, and the water retained in the mist release pin was completely zero before evaluation (assumed that the mass of the evaluation pin below is 1).
And the atmosphere which installed the mist discharge | release pin at the time of evaluation was made into 6 steps as shown in Table 1.
In any of the examples of the mist release pin,
It was visually confirmed that mist was discharged from the mist discharge pin member and there was no dripping.

In Table 1, the amount of mist released (ppm) indicates the μg concentration at which ascorbic acid is eluted in 1 mg of pure water.

Under the conditions shown in Tables 1 (a) to (f), the mist releasing pin member of Example 1 (not yet impregnated with a deliquescent component = evaluation pin member) was dried to completely eliminate moisture. evaluated.
For example, as shown in Table 1 (a), the evaluation pin member was held in an atmosphere of 20 ° C. and 90% RH (= 90% humidity) for 3 hours, 10 hours and 24 hours, respectively (holding time). It was created.
Then, the mass (mass 2) of the evaluation mist release pin prepared with different holding times was measured, and the difference from the mass (mass 1) in which the moisture was completely zero (mass 2−mass 1). = Amount of water retained).
This result is shown in the column of “Water retention amount” in Table 1, and a graph of the value in relation to “Retention time” (retention time in Table 1) in the atmosphere is shown in FIG.
Evaluation pin members created under the conditions shown in (b) to (f) of Table 1 were also evaluated in the same manner as described above, and are shown in the column of “Water retention amount” in Tables 1 (b) to (f).
From this result, as shown in FIG. 3, it can be seen that the evaluation mist pin prepared in the atmosphere under the conditions of Table 1 (a) has the largest water retention amount at any retention time.
On the other hand, the evaluation mist pin held in the atmosphere of 35% RH (humidity 35%) shown in Table 1 (f) has a water retention amount of zero even if it is held for 24 hours, and moisture in the atmosphere even if it contains deliquescence components. It can be seen that it could not be absorbed.

<Liquid sag inspection>
In addition, when held in a high humidity atmosphere for a long time, the deliquescent component in the mist release pin absorbs moisture in the atmosphere without limit, and liquid sag occurs from the mist release pin (water overflows from the mist release pin). The presence or absence of liquid dripping was confirmed as to whether or not there was a risk of this.
As shown in FIG. 4, the mist release pin absorbs when saturated for 24 hours or longer in an atmosphere of 45 ° C. and 95% RH (indoor temperature = 45 ° C., indoor humidity = 95%: almost saturated). The presence or absence of dripping (liquid dripping) was confirmed visually.
As a result, it was confirmed that no dripping occurred in the mist discharge pin member of the example.

<Measurement of mist emission from mist release pin>
Further, when the mist discharge pin member of Example 1 is used and left in different atmospheres, the amount of water absorbed by the mist discharge pin member (water retention amount) and the mist discharge pin member are discharged from the mist discharge pin member. The amount of mist released was evaluated.
FIG. 5 shows an apparatus for measuring the amount of mist discharged from the mist discharge pin member.
As shown in FIG. 5, a mist collecting funnel 52 is placed in front of the mist discharge pin 51 and is placed in a thermostatic bath 53, and the tip of the mist collecting funnel 52 is connected to a bubbling container 54. Then, the mist discharged from the mist discharge pin 51 was sucked and collected by the vacuum pump 55.
Next, the mist release amount of the mist release pin of Embodiment 1 of the present invention was evaluated.
That is, the amount of mist released was measured using a mist releasing pin member obtained by holding the evaluation mist pin member under various atmospheric conditions shown in Tables 1 (a) to (f).
The result is shown in the column of “Mist release amount” in Table 1, FIG.
From this result, it can be seen that the mist discharge pin member obtained by being held in the atmosphere of the conditions of Table 1 (a) has the largest amount of mist discharge in any holding time.
Among them, the one retained for 24 hours had the largest amount of water retained in the mist release pin, followed by 10 hours and 3 hours in that order.
From this result, it can be seen that the mist discharge pin member increases the water retention amount as it is kept in a humid atmosphere for a long time, and as a result, the mist discharge increases.
The amount of mist released is measured by adding vitamin to the deliquescent component, and using the DPPH radical (1,1-diphenyl-2-picrylhydrazyl) elimination method to remove the amount of mist released from the mist releasing pin. Measured by a quantitative test method.

<DPPH radical scavenging method>
The apparatus used for the measurement test of the amount of mist emission is a spectrophotometer apparatus (U-3010 manufactured by Hitachi, Ltd.). First, a 0.125 mmol / L ethanol solution of DPPH (manufactured by Wako Pure Chemical Industries, Ltd., 1,1-diphenyl-2-picrylhydrazyl) is prepared.
Add 1 ml of DPPH ethanol solution to 3 ml of bubbling solution and stir well.
If the sample is antioxidant, the radicals in the DPPH ethanol solution will decrease and the color of the DPPH ethanol solution will change from purple to yellow.
A value obtained by subtracting the peak at that time from the peak of the DPPH ethanol solution is a value indicating the antioxidant power.
The DPPH radical elimination method is a method for examining the strength of the reducing power of such radicals by the color change of the indicator.
The subtle color change was read with a spectrophotometer, converted to ascorbic acid concentration using a calibration curve obtained by measuring a known concentration of ascorbic acid, and obtained as a measurement result.

The mist discharge pin member of the present invention has a deliquescent component in the mist discharge pin member, so that the supply of the aqueous solution to the mist discharge pin member becomes unnecessary, and absorbs moisture in the air to absorb the mist discharge pin member. Can be discharged to the outside as mist.
At the same time, it is not necessary to supply the aqueous solution to the mist discharge pin member, so that the mineral components contained in the aqueous solution are not clogged in the mist discharge pin member, and the mist is stably maintained without maintenance over a long period of time. Can be released.
In addition, the sterilization effect by mist containing functional components is improved, so it can be applied to devices such as air conditioners, refrigerators, laundry, hair dryers, electric fans, air purifiers, humidifiers, facial instruments, etc. Is very expensive.

11 Core material 12 Sheath material 13 Drawing die 51 Mist discharge pin member 52 Funnel 53 Thermostatic bath 54 Bubbling container 55 Vacuum pump

Claims (4)

A mist discharge pin member that discharges mist to the outside,
The mist release pin member is composed of a porous body or a fiber molded body,
A mist release pin member characterized by containing a deliquescent component therein. The mist release pin member is
The mist discharge pin member according to claim 1, further comprising a conductive component. The deliquescent component is one or more components selected from polyphosphate, potassium phosphate, citric acid, sodium hydroxide, potassium carbonate, magnesium chloride, calcium chloride, and phosphoric acid. Item 3. The mist discharge pin member according to Item 1 or 2. A mist release pin member;
A power source for applying a negative voltage to the mist release pin member;
An electrostatic atomizer comprising:
An electrostatic atomizer using the mist discharge pin member according to any one of claims 1 to 3 as the mist discharge pin member.