阅读说明：本技术 空气净化器及空气净化器的制造方法 (Air purifier and manufacturing method thereof ) 是由 后藤昌一 于 2020-04-20 设计创作，主要内容包括：本发明提出一种能够减少制造工序且容易制造的空气净化器及空气净化器的制造方法。空气净化器(1)具备第一电极板(100)和第二电极板(200),其中,第一电极板(100)由导电体板形成,具有：板状的第一电极部(10),其具有多个第一电极构造(12),并在第一空腔(14)与第二空腔(16)之间具有第一导电体区域(18)；板状的第二电极部(20),其具有多个第二电极构造(22),并在直径比第一空腔大的第三空腔(24)与第四空腔(26)之间具有第二导电体区域(28)；以及连结部(50),其呈以将第一电极部与第二电极部层叠的方式弯曲的形状,第二电极板(200)由导电体板形成,配置于从第一电极构造与第二电极构造分离的位置,第二电极板(200)一体地形成有朝向第一电极构造及第二电极构造延伸的多个第三电极构造(32)。(The invention provides an air purifier which can reduce manufacturing processes and is easy to manufacture and a manufacturing method of the air purifier. An air cleaner (1) is provided with a first electrode plate (100) and a second electrode plate (200), wherein the first electrode plate (100) is formed by a conductive body plate and is provided with: a plate-shaped first electrode section (10) having a plurality of first electrode structures (12) and having a first conductor region (18) between a first cavity (14) and a second cavity (16); a plate-shaped second electrode section (20) having a plurality of second electrode structures (22) and having a second conductor region (28) between a third cavity (24) and a fourth cavity (26) that are larger in diameter than the first cavity; and a connecting portion (50) that is curved so as to laminate the first electrode portion and the second electrode portion, wherein the second electrode plate (200) is formed of an electrically conductive material plate and is disposed at a position separated from the first electrode structure and the second electrode structure, and the second electrode plate (200) integrally forms a plurality of third electrode structures (32) extending toward the first electrode structure and the second electrode structure.)

1. An air purifier is characterized in that the air purifier comprises a water tank,

comprises a first electrode plate and a second electrode plate, wherein,

the first electrode plate is formed of a conductive plate, and has: a plate-shaped first electrode unit having a plurality of first electrode structures each having a substantially circular first cavity and a substantially circular second cavity coaxial with the first cavity, and a substantially circular first conductor region between the first cavity and the second cavity; a plate-like second electrode unit having a plurality of second electrode structures, each of the second electrode structures having a substantially circular third cavity having a larger diameter than the first cavity and a substantially circular fourth cavity coaxial with the third cavity, and a substantially circular second conductor region between the third cavity and the fourth cavity, the plurality of second electrode structures being formed at positions corresponding to the first electrode structures; and a connecting portion connecting the first electrode portion and the second electrode portion, the connecting portion having a shape curved so as to laminate the first electrode portion and the second electrode portion so that the first electrode structure and the second electrode structure are coaxial,

the second electrode plate is formed of an electrically conductive plate and is disposed at a position separated from the first electrode structure and the second electrode structure, and the second electrode plate is integrally formed with a plurality of third electrode structures extending toward the first electrode structure and the second electrode structure on central axes of the first electrode structure and the second electrode structure,

the first electrode structure, the second electrode structure, and the third electrode structure are arranged in this order,

by applying a negative voltage to the first electrode plate and a positive voltage to the second electrode plate, corona discharge is generated between the first electrode structure and the third electrode structure and between the second electrode structure and the third electrode structure, and wind of ions is generated in a direction separating from the first electrode structure and the second electrode structure toward the third electrode structure.

2. The air purifier of claim 1,

an end portion of the third electrode configuration closer to the second electrode configuration is formed as a plane.

3. The air purifier of claim 1,

the first conductor region of the first electrode structure is at a longer distance from the third electrode structure than the second conductor region of the second electrode structure.

4. The air purifier of claim 1,

the width of the connecting portion is narrower than the width of the first electrode portion and the width of the second electrode portion.

5. The air purifier of claim 1,

the first electrode plate further has: a plate-shaped fourth electrode unit having a plurality of fourth electrode structures, each of the fourth electrode structures having a substantially circular fifth cavity having a larger diameter than the third cavity and a fourth conductor region serving as a conductor region at a peripheral edge of the fifth cavity, the plurality of fourth electrode structures being formed at positions corresponding to the second electrode structures; and a second connecting portion that connects the fourth electrode portion and the second electrode portion and has a shape that is curved so as to laminate the fourth electrode portion and the second electrode portion so that the fourth electrode structure and the second electrode structure are coaxial.

6. A method of manufacturing an air cleaner according to claim 1,

the first electrode portion, the second electrode portion, and the connecting portion are formed on a plate-shaped conductive plate by press working,

the first electrode plate is manufactured by bending the connection portion of the conductive plate on which the first electrode portion, the second electrode portion, and the connection portion are formed.

7. The manufacturing method of an air cleaner according to claim 6,

the third electrode structure is formed on a plate-shaped conductive plate by press working.

8. A method of manufacturing an air cleaner according to claim 5,

forming the first electrode portion, the second electrode portion, the fourth electrode portion, the connecting portion, and the second connecting portion on a plate-shaped conductive plate by press working,

the first electrode plate is manufactured by bending the coupling portion and the second coupling portion of the conductive plate on which the first electrode portion, the second electrode portion, the fourth electrode portion, the coupling portion, and the second coupling portion are formed.

9. The manufacturing method of an air cleaner according to claim 8,

the third electrode structure is formed on a plate-shaped conductive plate by press working.

Technical Field

The present invention relates to an air cleaner for generating ion wind and a method for manufacturing the air cleaner. In particular, to an air cleaner which generates ion wind without a fan and a method of manufacturing the air cleaner.

Background

Conventionally, an apparatus for generating an ion wind by corona discharge is known. In a conventional apparatus, a first metal layer having a first cavity pattern and a second metal layer having a second cavity pattern different from the first cavity pattern are laminated with a gap therebetween, and a first voltage is applied to them to generate a potential difference between them and a rod-like electrode disposed on the central axes of the first cavity pattern and the second cavity pattern, thereby generating an ion wind by corona discharge. In this device, the ion wind is generated by corona discharge, but it is desirable to increase the amount of the ion wind, and a device including a plurality of the electrodes is also known.

In such an air cleaner, the first metal layer and the second metal layer are laminated so that the first cavity pattern and the second cavity pattern are coaxial. For lamination, a spacer is sandwiched between the first metal layer and the second metal layer and fixed by a pin or the like (see patent document 1). However, this assembly operation increases the number of manufacturing steps, and becomes an obstacle to reduction in manufacturing time and cost. In addition, patent document 1 proposes that, with respect to the rod-shaped electrodes arranged on the central axes of the first cavity pattern and the second cavity pattern, the positions of the plurality of rod-shaped electrodes that are distant from the first cavity pattern and the second cavity pattern are configured as a flat plate structure, and the flat plate structure is supported by a flat plate serving as a base, thereby facilitating the manufacturing.

Patent document 1: japanese utility model registration No. 3210591

However, in order to mass-produce air cleaners and reduce the cost, it is desired to further reduce the manufacturing process. Therefore, an object of the present invention is to provide an air cleaner and a method of manufacturing the air cleaner, which can reduce the number of manufacturing steps and can be easily manufactured.

Disclosure of Invention

In order to solve the above problem, an air cleaner 1 according to a first aspect of the present invention includes, for example, as shown in fig. 1 and 2, a first electrode plate 100 and a second electrode plate 200, wherein the first electrode plate 100 is formed of an electrically conductive material plate, and includes: a plate-shaped first electrode portion 10 having a plurality of first electrode structures 12, the first electrode structures 12 having a substantially circular first cavity 14 and a substantially circular second cavity 16 coaxial with the first cavity 14, and having a substantially circular first conductor region 18 between the first cavity 14 and the second cavity 16; a plate-like second electrode portion 20 having a plurality of second electrode structures 22, the second electrode structure 22 having a substantially circular third cavity 24 having a larger diameter than the first cavity 14 and a substantially circular fourth cavity 26 coaxial with the third cavity 24, and having a substantially circular second conductor region 28 between the third cavity 24 and the fourth cavity 26, the plurality of second electrode structures 22 being formed at positions corresponding to the first electrode structure 12; and a connecting portion 50 that connects the first electrode portion 10 and the second electrode portion 20, and that is curved so as to laminate the first electrode portion 10 and the second electrode portion 20 so that the first electrode structure 12 and the second electrode structure 22 are coaxial, wherein the second electrode plate 200 is formed of an electrically conductive material plate and is disposed at a position separated from the first electrode structure 12 and the second electrode structure 22, wherein the second electrode plate 200 is integrally formed with a plurality of third electrode structures 32 that extend toward the first electrode structure 12 and the second electrode structure 22 on the central axes of the first electrode structure 12 and the second electrode structure 22, wherein the first electrode structure 12, the second electrode structure 22, and the third electrode structures 32 are disposed in this order, and wherein a negative voltage is applied to the first electrode plate 100 and a positive voltage is applied to the second electrode plate 200, thereby generating corona discharge between the first electrode structure 12 and the third electrode structure 32, and between the second electrode structure 22 and the third electrode structure 32, thereby generating wind F of ions in a direction separating from the third electrode structure 32 from the first electrode structure 12 and the second electrode structure 22.

With the above configuration, corona discharge is generated between the first electrode structure and the third electrode structure and between the second electrode structure and the third electrode structure, and wind of ions is generated in a direction away from the third electrode structure 32 from the first electrode structure and the second electrode structure 22, so that wind of a large amount of ions can be generated. Further, since the first electrode portion having the plurality of first electrode structures, the second electrode portion having the plurality of second electrode structures, and the coupling portion having a shape curved so as to laminate the first electrode portion and the second electrode portion are formed in the first electrode plate formed of the conductive plate, the air cleaner can be manufactured easily with a small number of manufacturing steps.

In the air cleaner 1 according to the second aspect of the present invention, for example, as shown in fig. 1 or 5, the end 33 of the third electrode structure 32 closer to the second electrode structure 22 is formed to be a flat surface. With the above configuration, even if the tip of the third electrode structure comes into contact with the electrode during maintenance or the like, the electrode is flat and safe.

In the air cleaner 1 according to the third aspect of the present invention, as shown in fig. 1, for example, the distance L1 between the first conductor region 18 of the first electrode structure 12 and the third electrode structure 32 is longer than the distance L2 between the second conductor region 28 of the second electrode structure 22 and the third electrode structure 32. With the above configuration, the distance from the third electrode to the first electrode structure having a small diameter and a large density is longer than the distance from the third electrode to the second electrode structure having a large diameter and a small density, and corona discharge is weakened, so that it is easy to blow out an ion wind having a uniform density as a whole. The distance between the first conductor region and the third electrode structure means the shortest distance therebetween, and the distance between the second conductor region and the third electrode structure means the shortest distance therebetween.

In the air cleaner 1 according to the fourth aspect of the present invention, as shown in fig. 2, for example, the width of the connection portion 50 is narrower than the width of the first electrode portion 10 and the width of the second electrode portion 20. With the above configuration, the first electrode plate can be easily processed when the conductive plate for the first electrode plate is bent to laminate the first electrode portion and the second electrode portion, and the first electrode plate can be made lightweight. The widths of the first electrode portion, the second electrode portion, and the connecting portion are lengths in a direction orthogonal to the direction in which the first electrode portion, the connecting portion, and the second electrode portion before the first electrode plate is bent are arranged, and are lengths in the vertical direction in fig. 2.

As shown in fig. 1 and 2, for example, an air cleaner 1 according to a fifth aspect of the present invention further includes: a plate-like fourth electrode unit 40 having a plurality of fourth electrode structures 42, the fourth electrode structure 42 having a substantially circular fifth cavity 44 with a larger diameter than the third cavity 24 and a fourth conductor region 48 which is a conductor region at the periphery of the fifth cavity 44, the plurality of fourth electrode structures 42 being formed at positions corresponding to the second electrode structure 22; and a second connecting portion 52 connecting the fourth electrode portion 40 and the second electrode portion 20, and having a shape curved so that the fourth electrode portion 40 and the second electrode portion 20 are laminated so that the fourth electrode structure 42 and the second electrode structure 22 are coaxial. With the above configuration, in addition to the first electrode structure and the third electrode structure and the second electrode structure and the third electrode structure, corona discharge is generated between the fourth electrode structure and the third electrode structure, and wind of ions is generated in a direction away from the fourth electrode structure and the third electrode structure, so that wind of a large amount of ions can be generated. The first electrode plate formed of the conductive plate is provided with a first electrode portion having a plurality of first electrode structures, a second electrode portion having a plurality of second electrode structures, a connecting portion having a shape curved so as to laminate the first electrode portion and the second electrode portion, a fourth electrode portion having a plurality of fourth electrode structures, and a second connecting portion having a shape curved so as to laminate the second electrode portion and the fourth electrode portion.

A method of manufacturing an air cleaner according to a sixth aspect of the present invention is, for example, as shown in fig. 2 to 4, the method of manufacturing the air cleaner 1 according to any one of the first to fourth aspects, wherein the first electrode portion 10, the second electrode portion 20, and the coupling portion 50 are formed on the plate-shaped conductive plate 110 by press working, and the coupling portion 50 of the conductive plate 110 on which the first electrode portion 10, the second electrode portion 20, and the coupling portion 50 are formed is bent, thereby manufacturing the first electrode plate 100. With the above configuration, the first electrode plate can be manufactured by press working and bending, and thus the manufacturing method of the air cleaner is easy to manufacture with a few manufacturing steps.

In a method of manufacturing an air cleaner according to a seventh aspect of the present invention, for example, as shown in fig. 5, the third electrode structure 32 is formed on the plate-shaped conductive plate 210 by press working. With the above configuration, the second electrode plate can be manufactured by press working, and thus the manufacturing method of the air cleaner is simple and requires few manufacturing steps.

A method of manufacturing an air cleaner according to an eighth aspect of the present invention is, for example, as shown in fig. 2 to 4, a method of manufacturing an air cleaner according to a fifth aspect, wherein a first electrode portion 10, a second electrode portion 20, a fourth electrode portion 40, a coupling portion 50, and a second coupling portion 52 are formed on a plate-shaped conductive plate 110 by press working, and the first electrode plate 100 is manufactured by bending the coupling portion 50 and the second coupling portion 52 of the conductive plate 110 on which the first electrode portion 10, the second electrode portion 20, the fourth electrode portion 40, the coupling portion 50, and the second coupling portion 52 are formed. With the above configuration, the first electrode plate can be manufactured by press working and bending, and thus the manufacturing method of the air cleaner is easy to manufacture with a few manufacturing steps.

In a method of manufacturing an air cleaner according to a ninth aspect of the present invention, for example, as shown in fig. 5, the third electrode structure 32 is formed on the plate-shaped conductive plate 210 by press working. With the above configuration, the second electrode plate can be manufactured by press working, and thus the manufacturing method of the air cleaner is simple and requires few manufacturing steps.

According to the air cleaner of the present invention, a large amount of ionic wind can be generated, and the air cleaner can be manufactured easily with a small number of manufacturing processes. Further, according to the method for manufacturing an air cleaner of the present invention, the manufacturing process is simplified and the manufacturing of the air cleaner is facilitated.

The present application is based on japanese patent application No. 2019-081771, filed in japan on 23/4/2019, the contents of which form part of the present application as a content of the present application.

In addition, the present invention will be more fully understood from the detailed description that follows. However, the detailed description and specific examples are preferred embodiments of the present invention and are described only for the purpose of illustration. Various modifications and changes will become apparent to those skilled in the art from this detailed description.

The applicant does not intend to dedicate any disclosed embodiments to the public, and to the extent any disclosed modifications or alterations may not literally fall within the scope of the claims, they are considered to be part of the invention under the doctrine of equivalents.

In the description of the present specification or claims, the use of a noun or the same instruction word should be interpreted to include both a single entity and a plurality of entities unless otherwise indicated or unless the context clearly dictates otherwise. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed.

Drawings

Fig. 1 is a side view of main components of an air cleaner as an embodiment of the present invention.

Fig. 2 is a plan view of a conductor plate which is press-worked to be used as the first electrode plate.

Fig. 3 is a view showing a process of bending an electrically conductive plate which is pressed for use as a first electrode plate, wherein fig. 3 (a) is a plan view and fig. 3 (b) is a side view.

Fig. 4 is a view of the first electrode plate subjected to bending, fig. 4 (a) is a plan view, and fig. 4 (b) is a side view.

Fig. 5 is a plan view of the conductor plate pressed for use as the second electrode plate.

Fig. 6 is five views of the second electrode plate subjected to bending, fig. 6 (a) is a plan view, fig. 6 (b) is a front view, fig. 6 (c) is a right side view, fig. 6 (d) is a rear view, and fig. 6 (e) is a left side view.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and redundant description thereof is omitted. Fig. 1 is a sectional view of main components of the air cleaner 1. The air cleaner 1 mainly includes a first electrode plate 100 in which a plate-shaped first electrode portion 10, a plate-shaped second electrode portion 20, and a plate-shaped fourth electrode portion 40 are laminated, and a second electrode plate 200 having a third electrode structure 32 facing these electrode portions. Although not shown, the air cleaner 1 includes a power supply for applying a negative voltage to the first electrode plate 100 and a positive voltage to the second electrode plate 200, a case for fixing the above components, receiving the outside air, blowing out the ion wind, and a switch for operating and stopping the air cleaner 1. In the air cleaner 1, the ion wind generated by the main components is ejected through the nozzle formed by the housing.

Fig. 2 is a plan view of the conductor plate 110 which is press-worked to be used as the first electrode plate 100. The conductive plate 110 is typically a metal plate of iron, copper, aluminum, or the like, but is not limited thereto. The conductive plate 110 is formed by punching a first electrode portion 10, a second electrode portion 20, a fourth electrode portion 40, a connecting portion 50 connecting the first electrode portion 10 and the second electrode portion 20, and a second connecting portion 52 connecting the second electrode portion 20 and the fourth electrode portion 40.

A plurality of first electrode structures 12 are formed in the first electrode portion 10. Specifically, the first electrode structure 12 is formed as follows. The substantially circular first cavity 14 is formed coaxially with a substantially circular second cavity 16. Here, if the substantially circular first cavity 14 is circular, the distance from the third electrode structure 32 becomes uniform, so that uniform corona discharge can be obtained, and the ion wind also becomes uniform. However, the substantially circular first cavity 14 may be a polygon, an ellipse, a rice ball shape, or the like as long as corona discharge is present. A second substantially circular-ring-shaped cavity 16 is formed coaxially with the first cavity 14 in such a way that a first conductor region 18 is formed around the first cavity 14. In the case of coaxial, the first conductor region 18 may be formed within a range of not strictly coaxial. The second cavity 16, which is substantially circular in shape, is formed, for example, by three fan-shaped cavities 16a, 16b, 16c and the portions between the fan-shaped cavities 16a, 16b, 16c, i.e., the connecting portions 16d, 16e, 16f for supporting the first electrical conductor region 18. The number of the fan-shaped cavities and the connecting parts is not limited to three, and may be two, or may be four or more. In this way, a substantially annular first conductor region 18 is formed between the first cavity 14 and the second cavity 16. A corona discharge is generated between the first current conductor region 18, in particular its inner edge, and the third electrode configuration 32.

The first electrode portion 10 has seven first electrode structures 12 on the flat panel. If the plurality of first electrode structures 12 are provided as described above, a large amount of ion wind can be generated by a large number of corona discharges. In addition, the seven first electrode structures 12 are disposed so as to be equidistant from each other. With the above arrangement, a uniform ion wind can be obtained. The number of the first electrode structures 12 is not limited to seven, and may be arbitrarily changed according to the required amount of ion wind, and the arrangement is not limited to the equidistant distance.

The second electrode portion 20 has a similar structure to the first electrode portion 10, and therefore, different points will be described, and redundant description will be omitted. In the second electrode portion 20, a plurality of second electrode structures 22 are formed on a flat plate. Specifically, the second electrode structure 22 is formed as follows. A third substantially circular cavity 24 corresponding to the first cavity 14 and a fourth substantially circular cavity 26 corresponding to the second cavity 16 are formed coaxially, thereby forming a second electrical conductor region 28. Here, the third cavity 24 has a larger diameter than the first cavity 14. That is, the diameter of the second electrode configuration 22 is larger than the first electrode configuration 12. The fourth cavity 26, which is substantially circular in shape, is formed by three sector-shaped cavities and the portion between the sector-shaped cavities, i.e., the connecting portion for supporting the second conductor region 28, as in the case of the second cavity 16. The outer diameter of the fourth cavity 26 is the same as the outer diameter of the second cavity 16, but is not necessarily limited to the same diameter. By making the outer diameters of these equal, a smooth path of the ion wind generated by the corona discharge can be formed. Here, the second electrode structure 22 is formed at a position corresponding to the first electrode structure 12. Here, the "corresponding positions" refer to positions that are coaxial with each other when the conductive plate 110 is bent so as to be the first electrode plate 100.

The fourth electrode portion 40 has a similar structure to the first electrode portion 10 and the second electrode portion 20, and therefore, different points will be described, and redundant description will be omitted. In the fourth electrode portion 40, a plurality of fourth electrode structures 42 are formed on a flat plate. Specifically, the fourth electrode configuration 42 is formed as follows. A substantially circular fifth cavity 44 is formed. Here, the fifth cavity 44 is larger in diameter than the third cavity 24. The conductor region at the periphery of the fifth cavity 44 becomes the fourth conductor region 48. That is, the fourth electrode structure 42 has a larger diameter than the second electrode structure 22. The outer diameter of the fifth cavity 44 is the same as the outer diameters of the second cavity 16 and the fourth cavity 26, but the fifth cavity is not necessarily limited to the same diameter. Further, by making the outer diameters of these equal, a smooth path of the ion wind generated by the corona discharge can be constituted.

The connecting portion 50 is located between the first electrode portion 10 and the second electrode portion 20, and connects the two. The connection portion 50 is a portion bent to form the first electrode plate 100 by laminating the first electrode portion 10 and the second electrode portion 20. Thus, the connection portion 50 may have a length that is bent only for lamination. The width of the connecting portion 50 may be narrower than the width of the first electrode portion 10 and the width of the second electrode portion 20. The width of the coupling portion 50 is made narrow, so that the force for bending is small, that is, the bending is easy. Here, the "length" is a length in a direction (horizontal direction in fig. 2) in which the first electrode portions 10, the coupling portions 50, and the second electrode portions 20 are arranged, and the "width" is a length in a direction (vertical direction in fig. 2) orthogonal to the direction in which the first electrode portions 10, the coupling portions 50, and the second electrode portions 20 are arranged. The connecting portion 50 is usually formed of the same material as the first electrode portion 10 and the second electrode portion 20, but may be formed of a different material.

The second connecting portion 52 is located between the second electrode portion 20 and the fourth electrode portion 40, and connects the two. The rest is the same as the coupling portion 50, and therefore, redundant description is omitted.

Fig. 3 shows a state in which the coupling portion 50 and the second coupling portion 52 are bent in order to laminate the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40. Four spacers 54 are attached to the surface of the first electrode portion 10 facing the second electrode portion 20, the surface of the second electrode portion 20 facing the first electrode portion 10, the surface of the fourth electrode portion 40 facing the fourth electrode portion 40, and the surface of the fourth electrode portion 40 facing the second electrode portion 20, respectively. The spacer 54 can determine the size of the gap between the electrode portions 10, 20, and 40, and maintain the gap constant. In general, when the conductive plate 110 is pressed, a recess for a spacer (not shown) is formed, and the spacer 54 is fitted into the recess to be attached. The spacer 54 is preferably made of the same material as the conductive plate 110, so that it can be easily processed. However, the material of the spacer 54 may be different from that of the conductive plate 110, and may be a conductor or an insulator.

Fig. 4 shows a state in which the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40 are laminated after the bending process is completed. The spacers 54 of the first electrode portion 10 and the second electrode portion 20 and the spacers 54 of the second electrode portion 20 and the fourth electrode portion 40 abut each other, thereby forming a gap between the electrode portions 10, 20, 40. In this way, the first electrode plate 100 can be manufactured by pressing one conductive plate and bending the pressed conductive plate 110, which is easy. Further, since the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42 are manufactured by press working and bending, it is possible to reduce the displacement of the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42 which are coaxial, as compared with an assembly work in which a spacer is sandwiched between a plurality of metal layers and fixed by a pin or the like.

Next, the structure of the second electrode plate 200 will be described with reference to fig. 1, 5, and 6. The second electrode plate 200 is disposed to face the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40, and functions as a third electrode portion 30 that generates corona discharge therebetween. The third electrode portion 30 has a plurality of rod-shaped third electrode structures 32 extending on the central axes of the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42, respectively. The "rod-like" is not necessarily an elongated element having the same diameter, and may be a plate or the like having a narrower width closer to the tip, as long as it is a shape capable of generating corona discharge from the tip. The distal end 33 of the third electrode structure 32, i.e., the proximal ends on the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40 sides, are formed as a flat surface. The flat surface includes a case where a curvature or a chamfer is provided on the periphery of the tip 33 or the tip 33 is a smooth rotational elliptical shape (a body of revolution about a single axis) as a whole.

Fig. 5 is a plan view of the conductor plate 210 which is press-worked to be used as the second electrode plate 200. In the conductive plate 210, a folding line 212 is added so as to be able to be bent in a three-dimensional manner so that seven third electrode structures 32 are arranged coaxially with seven first electrode structures 12, second electrode structures 22, and fourth electrode structures 42 formed in the first electrode plate 100. The conductive plate 210 is divided by a fold line 212 into a central portion 34 having three third electrode structures 32, two side surface portions 35 having two third electrode structures 32, two coupling portions 36 connecting the central portion 34 and the side surface portions 35, a bottom surface portion 37 serving as a base of the second electrode plate 200, and a support portion 38 serving as a support between the central portion 34 and the side surface portions 35. The side surface portion 35 is formed with a through hole 39 into which the tip of the support portion 38 is inserted.

Fig. 6 is five views showing the second electrode plate 200 assembled from the conductive plate 210. Fig. 6 (a) is a plan view, fig. 6 (b) is a front view, fig. 6 (c) is a right side view, fig. 6 (d) is a rear view, and fig. 6 (e) is a left side view. The conductive plate 210 is bent at a fold line 212 so that the tip of the support portion 38 penetrates the through hole 39. The through portion of the support portion 38 is bent as shown by a dotted line in fig. 6, whereby the shape of the second electrode plate 200 is stabilized. As described above, the second electrode plate 200 can be easily manufactured by pressing one conductive plate and bending the pressed conductive plate 210. Further, as compared with an assembly operation in which the distal base end portion of the rod-shaped electrode is formed in a flat plate structure and the flat plate structure is supported by a flat plate serving as a base, the second electrode plate 200 can be manufactured by press working and bending working, and therefore, the number of manufacturing steps of the second electrode plate 200 can be reduced.

The first electrode plate 100 and the second electrode plate 200 manufactured as described above are fixedly received in a case and connected to a power supply, thereby manufacturing the air cleaner 1.

The first electrode plate 100 has been described as having the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40, but the fourth electrode portion 40 may not be provided. Alternatively, the first electrode plate 100 may further have the same electrode portion.

The case where both the first electrode plate 100 and the second electrode plate 200 are formed by press working has been described, but either one may be formed by press working. Even in this case, the manufacturing process is simplified and the number of manufacturing steps is reduced as compared with the conventional manufacturing method.

The description has been given of the case where the width of the connecting portion 50 and the second connecting portion 52 is narrower than the width of the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40, but either one or both of them may be the same as the width of the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40.

Next, the operation of the air cleaner 1 will be explained. By applying a negative voltage to the first electrode portion 10, the second electrode portion 20, and the fourth electrode portion 40 and a positive voltage to the third electrode portion 30, corona discharge is generated between the third electrode structure 32 and the first electrode structure 12, between the third electrode structure 32 and the second electrode structure 22, and between the third electrode structure 32 and the fourth electrode structure 42. The potential difference applied varies depending on the interval and size of the electrode structure.

By the corona discharge, an ion wind is formed in a direction (upward direction in fig. 1) away from the third electrode structure 32 from the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42. That is, since air is ionized by the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42, an ion wind is generated in a direction away from the third electrode structure 32 to which a positive voltage is applied. Since ion wind is formed at three positions, that is, the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42, a large amount of ion wind flows.

Here, the distance L1 of the first electrode configuration 12 from the third electrode configuration 32 is longer than the distance L2 of the second electrode configuration 22 from the third electrode configuration 32. In addition, the distance L4 between the fourth electrode structure 42 and the third electrode structure 32 is made shorter than the distance L2 between the second electrode structure 22 and the third electrode structure 32. Further, the distance L4 between the fourth electrode structure 42 and the third electrode structure 32 means the shortest distance therebetween. The ion wind having a higher density is generated in the first electrode structure 12 having a smaller diameter, the ion wind having a lower density is generated in the second electrode structure 22 having a larger diameter, and the ion wind having a further lower density is generated in the fourth electrode structure 42 having a further larger diameter. However, since the corona discharge is weakened even when the distance from the third electrode structure 32 is long, the generated ion wind has a low density. Thus, by forming L1 > L2 > L4, ion wind of uniform density is easily generated as a whole. In particular, the first electrode structure 12, the second electrode structure 22, and the fourth electrode structure 42 are preferably arranged on the paraboloid with the third electrode structure 32 as the center. By disposing the ion wind on the paraboloid, an ion wind having a uniform density can be easily generated. The distances L1, L2, and L4 are not limited to the above, and may be in other relationships or the same distance.

Industrial applicability of the invention

The air purifier of the present invention can decompose viruses and chemical substances floating in indoor space, in-vehicle space, in-container space, etc. by generating ion wind, thereby performing air sterilization and deodorization.

Hereinafter, the main reference numerals used in the present specification and drawings are collectively shown.

1 … air purifier; 10 … a first electrode portion; 12 … first electrode configuration; 14 … a first cavity; 16 … a second cavity; 18 … a first electrical conductor region; 20 … second electrode portion; 22 … second electrode configuration; 24 … third cavity; 26 … fourth cavity; 28 … a second electrical conductor region; 30 … third electrode section; 32 … third electrode configuration; 33 … front end of the third electrode configuration (end closer to the second electrode configuration); 34 … center portion; 35 … side portions; 36 … joint; 37 … bottom surface portion; 38 … support portion; 39 … through holes; 40 … fourth electrode portion; 42 … fourth electrode configuration; 44 … fifth cavity; 48 … a fourth electrical conductor region; 50 … connecting part; 52 … second joint; 54 … a spacer; 100 … a first electrode plate; 110 … plate-like conductive body plates; 200 … a second electrode plate; wind of F … ions; l1 … distance of first electrode configuration from third electrode configuration; l2 … distance of second electrode configuration from third electrode configuration; l4 … distance of the fourth electrode configuration from the third electrode configuration.