JP2007143678A - Negative ion supply apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and efficient negative ion supply apparatus and method applicable to air treatment in a large space. <P>SOLUTION: An air blower 11 and an inlet 12a of a column 12 are connected with a blast pipe 15, and an outlet 12b of the column 12 and a treatment object space 23 are connected with a duct 24. An upper filling section 16 and a lower filling section 17 filled with Raschig rings are provided inside the column 12 and a water pipe is installed in an intermediate hollow section 18 between the upper filling section 16 and the lower filling section 17. The water pipe 14 is connected to a pump 21 in a storage tank 13 and water is atomized from a nozzle 19 attached at the tip of the water pipe 14. An electric field impressing means 22 formed by oppositely disposing an aluminum tube and a carbon rod is provided in a part of the water pipe 14 and the electric field is previously impressed on the water atomized by the nozzle 19. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a negative ion supply device and a negative ion supply method for supplying negative ions to a processing space.

  It is widely known that fine particles consisting of about 10 to 100 molecules that are charged with negative charges floating in the air have a positive effect on the human body, such as stabilizing human autonomic nerves and improving functions of respiratory organs. It has been. Such fine particles are usually called negative ions (negative air ions, anions), and are generated in the air by the Leonard effect when water is finely divided in nature, such as a waterfall.

  Focusing on the health effects of these negative ions, it is desired to generate them artificially, and many methods have been proposed in recent years. These negative ion generators include those that finely divide water by simulating waterfalls, those that electrically generate ions, those that use friction such as ceramics, etc., but simple, safe and reliable The water splitting method is suitable for generating a large amount of negative ions.

Such a negative ion generator, as seen in, for example, Patent Document 1, is a water atomizing means for splitting water into fine water droplets, and air containing the atomized water droplets and negative ions to be treated. It is comprised from the ventilation means and the gas-liquid separation means which isolate | separate air and water. Many proposals have been made for this water droplet splitting type device, but these are related to the difference in system and the improvement for each of the above components, and the basic configuration may be said to be the same. As these improvements, in particular, there are a lot of atomizing means. For example, Patent Document 2 describes a method of atomizing water by colliding fine water droplets ejected from opposed nozzles. Describes a method in which water is supplied to an impeller and struck by the impeller to form water droplets.
Japanese Patent Publication No. 5-58755 Japanese Patent No. 3047230 Japanese Patent No. 2926314

  The conventionally known water droplet splitting type device is to atomize water by splitting it into fine water droplets and use the negative ions generated at that time. There is a limit to the amount. For this reason, it can be applied to clean the air in a narrow space such as homes by negative ionization, but it is insufficient in capacity to process the air in large spaces such as offices, factories, and gymnasiums. .

  An object of the present invention is to solve this drawback and provide a simple and efficient negative ion supply apparatus and negative ion supply method which can be applied to the treatment of air in a large space.

  The negative ion supply apparatus according to the present invention is a negative ion supply apparatus that supplies negative ions to a space to be treated, and includes an electric field applying unit that applies an electric field to water, and water in which an electric field is applied by the electric field applying unit. An atomizing means for converting the air, a blower means for sending air toward the water atomized by the atomizing means, and a gas-liquid separating means for separating the air containing the atomized water into water and air. It is characterized by having.

  The negative ion supply apparatus of the present invention is characterized in that the electric field applying means is made of different kinds of metals or carbons facing each other.

  The negative ion supply device of the present invention is characterized in that the atomizing means is a combination of a spray and a scrubber type gas-liquid contact device.

  The negative ion supply method of the present invention is a negative ion supply method to a treatment space, in which an electric field is applied to water by an electric field applying unit, and water to which the electric field is applied by the electric field applying unit is fogged by an atomizing unit. The atomized water is brought into contact with the air fed by the blowing means, and then the air containing the atomized water is separated into water and air by the gas-liquid separation means, and the separated air is treated It is characterized by supplying to space.

  According to the present invention, since the electric field is previously applied to the water to be atomized, the negative ion generation ability by atomizing the water can be greatly improved. Thus, air in a large space such as an office, a factory, or a gymnasium can be treated with a negative ion generator having a simple and efficient structure.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing a negative ion generator according to an embodiment of the present invention.

  As shown in FIG. 1, the negative ion generator shown in the present embodiment includes a blower 11, a tower 12, a water storage tank 13, and a water pipe 14 as main components.

  A tower (device main body) 12 that is a scrubber type gas-liquid contact device is formed in a cylindrical shape having an inlet 12 a and an outlet 12 b, and a blower 11 that is a blowing means is connected to an inlet 12 a on the lower end side of the tower 12. They are connected by a blower pipe 15. Inside the tower 12, an upper packing part 16 and a lower packing part 17 are provided, and these packing parts 16 and 17 are each filled with Raschig rings (not shown). A middle portion between the upper filling portion 16 and the lower filling portion 17 is a hollow portion 18 where a water supply pipe 14 is attached, and a nozzle 19 which is an atomizing means is attached to the tip of the water supply pipe 14. The water supply pipe 14 extends to a water storage tank 13 communicating with the lower end of the tower 12 and is connected to a pump 21 in the water storage tank 13, and an electric field applying means 22 (hatched for convenience is attached to a part of the pipe line. Is shown). Water is stored in the water storage tank 13, and when the pump 21 is operated, water is supplied to the nozzle 19 through the water supply pipe 14. The outlet 12 b at the top of the tower 12 is connected to the processing space 23 by a duct 24. A water supply pipe 25 and a drain pipe 26 are connected to the water storage tank 13, and the water storage tank 13 is grounded by an electric path 27.

  2 is a diagram showing the electric field applying means, and FIG. 3 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIG. 2 and FIG. 3, the electric field applying means 22 is electrically connected to the aluminum pipe 28 by the insulating member 29 on the central axis of the aluminum pipe 28 and the aluminum pipe 28 mounted inside the water supply pipe 14. It consists of a carbon rod 31 fixed in an insulated state. In the portion where the electric field applying means 22 is provided, water flows between the aluminum tube 28 and the carbon rod 31 facing each other, whereby an electric field is generated between the aluminum tube 28 and the carbon rod 31 due to a potential gradient. The electric field is applied to the water flowing through the water pipe 14.

  Next, a method for supplying negative ions to the processing space 23 by the negative ion generator will be described.

  First, the blower 11 is moved and the outside air taken in through an air filter (not shown) is sent from the inlet 12 a to the lower part of the tower 12 through the blower pipe 15. The pump 21 is moved to feed the water stored in the water storage tank 13 into the nozzle 19 through the water supply pipe 14. At this time, an electric field is applied in advance to the water fed into the nozzle 19 by passing through the electric field applying means 22. The water fed into the nozzle 19 is sprayed downward as fine water droplets from the nozzle 19, and the water droplets are dispersed and flowed by Raschig ring of the lower filling portion 17 and flow into the water storage tank 13. At this time, the water droplet comes into contact with the air sent from the air inlet 12 a by the blower 11. That is, in this embodiment, the atomizing means is a combination of spraying by the nozzle 19 and the tower 12 which is a scrubber type gas-liquid contact device. When passing through the nozzle 19 and the Raschig ring, a part of the water droplets atomized by being sprayed from the nozzle 19 rises along with the introduced air, and by the Raschig ring of the upper filling portion 16 which is a gas-liquid separation means Separated from air.

  The water to which the electric field is applied by the electric field applying means 22 is positively charged during the atomization, the same amount of negative ions is generated in the air, and the air containing the negative ions is ducted from the outlet 12b by the blower 11. 24 to the processing space 23. The positively charged water falls into the water storage tank 13, and the positive charge charged thereto is grounded through the electric circuit 27. Tap water is supplied to the water storage tank 13 little by little through a water supply pipe 25, and overflowed water is discharged to the outside through a drain pipe 26.

(Example)
The tower 12 is made of FRP (fiber reinforced plastic) and has a cylindrical shape of φ1000 × 1800H, the upper filling part 16 is made of PP (polypropylene), 30 × φ30, and the lower filling part 17 is made of 1000H. Is made of PP (polypropylene) and 30 × φ30. The blower 11 sent 100 m ³ / min of air to the tower 12, and the pump 21 sent 250 liters / min of water to the nozzle 19, and the water pressure applied to the nozzle 19 at this time was 1.5 kg / cm ² . The water supply pipe 14 is made of PVC (polyvinyl chloride) and has an inner diameter φ25, the aluminum pipe 28 of the electric field applying means 22 has the same diameter and a length of 30 cm, the carbon rod 31 has a thickness of 10 mm, and the length is equal to the aluminum pipe 28. 30 cm. With this configuration, a potential difference of 0.7 V was generated between the two electrodes of the aluminum tube 28 and the carbon rod 31.

Under the above conditions, when the processing space 23 is operated as a factory having a volume of 2000 m ³ , the negative ions inside the duct 24 are 206200 / cm ³ , and the factory is filled with 15400 / cm ³ negative ions. did. Although the air in the factory was refreshing and the humidity was 75 RH, it did not feel moisture. There were also improvements in employee respiratory disease.

  Thus, in this negative ion generator and generation method, since the electric field is applied by the electric field applying means 22 in advance to the water atomized by the atomizing means, the ability to generate negative ions when water is atomized. The air in the space 23 to be processed, which is a large space such as a factory, can be processed with a simple and efficient structure. In addition, since the negative ion generation capability is greatly improved, even if the space to be processed 23 is a large space, it is possible to purify the air and contribute to improving comfort and promoting health. In addition, since no explosion-proof work is required, it is not necessary to make the wiring etc. explosion-proof.

On the other hand, when the electric field applying means 22 was not used and the operation was performed under the same conditions, the negative ions in the factory were 610 / cm ³ , the refreshing feeling was remarkably low, and the humidity was experienced. For example, in the conventional patent No. 3047230, it is assumed that 651900 negative ions / cm ³ are generated, but the air flow rate is 1.07 m ³ / minute, and the total negative ion number is compared with the method of the present invention. It can be seen that it is about 1/30 and not suitable for processing a large space.

  4 (a) to 4 (d) are cross-sectional views showing modifications of the electric field applying means shown in FIG. 3, and FIGS. 5 (a) and 5 (b) are cross-sectional views showing modifications of the nozzle shown in FIG. 6 (a) and 6 (b) are cross-sectional views showing modified examples of the atomizing means, and FIG. 7 is an explanatory view showing a modified example of the gas-liquid separating means. 4-7, the same code | symbol is attached | subjected to the member corresponding to the member mentioned above.

  In the electric field applying means 22 shown in FIG. 3, the water supply pipe 14, the aluminum pipe 28, and the carbon rod 31 are all formed in a circular cross section. However, the present invention is not limited to this, for example, in FIGS. 4 (a) and 4 (b). As shown, these cross sections may be formed in other shapes such as a quadrangle or an ellipse.

  In the case shown in FIG. 3, the electric field applying means 22 is configured by disposing the carbon rod 31 inside the aluminum tube 28, but not limited thereto, for example, as shown in FIG. An aluminum half tube 32 and a copper half tube 33 each having an arcuate cross section may be combined to form a tubular shape with an insulating member 29 sandwiched therebetween, and water may flow inside the tube. As shown in FIG. 4 (d), the structure is such that an electric field can be applied to the water, such as providing a zinc electrode 34 and a copper electrode 35 facing each other inside the water pipe 14 while being supported by an insulating member 29, respectively. Any other structure may be used.

  Further, in the case shown in FIG. 1, the nozzle 19 that is the atomizing means of water is designed to inject water downward. However, the present invention is not limited to this, for example, a pair of nozzles as shown in FIG. 19 may be provided so as to face each other, and water droplets ejected from these nozzles 19 may collide with each other. Moreover, as shown in FIG.5 (b), you may make it collide the water injected from the nozzle 19 with the inner surface of the tower 12, an impeller (not shown), etc., for example.

  Further, in the case shown in FIG. 1, the atomizing means has a structure in which water is ejected from the nozzle 19. However, the present invention is not limited to this, and for example, as shown in FIG. Water is supplied to a rotating body 36 such as an impeller so that the water is atomized by centrifugal force, or water such as ultrasonic waves generated by an oscillator 37 is used as shown in FIG. The water may be atomized by other methods such as atomizing water.

  Furthermore, in the case shown in FIG. 1, the gas-liquid separating means for separating the air containing the atomized water droplets into air and water droplets is the upper filling portion 16 filled with Raschig rings (not shown). For example, a cyclone-type separation device 38 shown in FIG. 7, a filter, or the like may be used. Moreover, when the wind speed by the air blower 11 is small, it is good also as a structure which raises the inside of the tower 12 and isolate | separates gas-liquid naturally and takes out air from the upper part of the tower 12. FIG. Furthermore, these gas-liquid separation means do not need to completely remove the mist-like water droplets from the air, and may only remove relatively large water droplets. This is because some ultrafine water droplets are negative ions.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, if the electric field application means 22 is a means for performing a process of applying an electric field to water to be atomized in advance, an electrode is provided in the water pipe 14 or the water tank 13 to supply a static voltage or an alternating voltage. More simply, as in the present embodiment, two or more metals or carbons having different ionization tendencies may be opposed to each other in the feed water to form a potential gradient. In this case, the pole having a large ionization tendency is not limited to aluminum, and iron, zinc, etc. may be used, and the pole having a small ionization tendency is not limited to carbon, for example, copper, silver, gold, platinum, etc. You may make it use.

  In the present embodiment, the separated water is returned to the water storage tank 13 and reused. However, the present invention is not limited to this. For example, the separated water may be discharged to the outside.

  Furthermore, the water used in the present invention may be water that is usually available, such as tap water, industrial water, groundwater, river lakes, and may be purified in some cases. Also, a solution such as sea water may be used.

  Furthermore, it is optional to add an apparatus for heating, cooling, dehumidifying, filtering, deodorizing and the like of the air to the negative ion generator of the present invention.

  Further, it is preferable to supply the air into the tower 12 through the duct 24 using the blower 11. In this case, means for heating, cooling, dehumidifying, deodorizing and the like of the air is provided in the middle of the duct 24. You may attach and process air. The number of the ducts 24 is not limited to one, and the ducts 24 may be branched and provided to the processing space from a plurality of locations.

  Furthermore, the negative ion-containing air supplied by the negative ion supply apparatus of the present invention is not limited to homes, but also offices, stores, factories, schools, hospitals, theaters, museums, gymnasiums, exhibition halls, poultry houses, livestock houses, house cultivation houses It can contribute to improving comfort and improving health by purifying the air in large spaces. Moreover, the hygienic environment of these poultry houses can be improved by installing this negative ion generator in a poultry house or a livestock house and supplying negative ions.

  Furthermore, although the air blower 11 is utilized as a ventilation means, the thing with a large ventilation volume is suitable for the air treatment of large space.

  Furthermore, the tower 12 is a scrubber-type packed tower, but may have other forms such as a plate tower. Moreover, you may make it atomize water not only in the tower 12 but in the inside of a container-shaped apparatus main body provided with the inlet and outlet of air.

It is explanatory drawing which shows the negative ion generator which is one embodiment of this invention. It is a figure which shows an electric field application means. It is sectional drawing which follows the AA line in FIG. (A)-(d) is sectional drawing which shows the modification of the electric field application means shown in FIG. 3, respectively. (A), (b) is sectional drawing which shows the modification of the nozzle shown in FIG. 1, respectively. (A), (b) is sectional drawing which shows the modification of an atomization means, respectively. It is explanatory drawing which shows the modification of a gas-liquid separation means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Blower 12 Tower 12a Inlet 12b Outlet 13 Water storage tank 14 Water supply pipe 15 Air supply pipe 16 Upper filling part 17 Lower filling part 18 Hollow part 19 Nozzle 21 Pump 22 Electric field application means 23 Processed space 24 Duct 25 Water supply pipe 26 Drain pipe 27 Electrical path 28 Aluminum tube 29 Insulating member 31 Carbon rod 32 Aluminum half tube 33 Copper half tube 34 Zinc electrode 35 Copper electrode 36 Rotating body 37 Oscillator 38 Separation device

Claims (4)

A negative ion supply device for supplying negative ions to a processing space,
An electric field applying means for applying an electric field to water;
Atomizing means for atomizing water to which an electric field is applied by the electric field applying means;
A blowing means for sending air toward the water atomized by the atomizing means;
A negative ion supply apparatus comprising gas-liquid separation means for separating the air containing the atomized water into water and air.   2. The negative ion supply apparatus according to claim 1, wherein the electric field applying means is made of different kinds of metals or carbons facing each other.   3. The negative ion supply apparatus according to claim 1 or 2, wherein the atomizing means is a combination of a spray and a scrubber type gas-liquid contact device. A method of supplying negative ions to a processing space,
An electric field is applied to the water by the electric field applying means, the water to which the electric field is applied by the electric field applying means is atomized by the atomizing means, the atomized water is brought into contact with the air fed by the blowing means, A negative ion supply method, wherein air containing atomized water is separated into water and air by gas-liquid separation means, and the separated air is supplied to the processing space.

Images