TWI653061B - Discharge device and electrical apparatus - Google Patents

Abstract

The ion generating device (1) comprises: a discharge electrode (15) having an end portion (42) before discharge; and a protective plate (51) protecting at least a portion of the front end portion (42) from passing through the discharge electrode (15) The influence of the flow of the specific blowing direction (A) of the air.

Description

Discharge device and electrical machine

The present invention relates to a discharge device for discharging and an electric device including the same.

The discharge device described above is used, for example, in an air cleaner that performs indoor air purification, sterilization, or deodorization. In the discharge device described above, for example, a corona discharge is generated between a discharge portion of a discharge electrode to which a high voltage is applied and an induction electrode, and energy such as electrons, ions, ozone, radicals, and active substances generated from air is high. particle. The generated particles are carried in the air cleaner by the blown air in the blowing direction, and are released to the outside. As the discharge electrode, a needle-shaped discharge electrode described in Patent Document 1 and a brush-shaped discharge electrode in which a plurality of fibrous conductors are bundled as disclosed in Patent Document 2 are known. [Patent Document 1] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2013-065537 (Patent Document 2) Japanese Laid-Open Patent Publication No. 2008-034220

[Problems to be Solved by the Invention] When the discharge device is used for a long period of time, adhering substances such as dust and particles contained in the air to be blown adhere to the discharge portion of the discharge electrode, and the discharge performance is deteriorated. The present invention has been made in view of the above problems, and an object thereof is to provide a discharge device and the like which can suppress deterioration in discharge performance. [Means for Solving the Problems] In order to solve the above problems, a discharge device according to an aspect of the present invention is characterized in that it is a discharger, and includes: a discharge electrode having a discharge portion for performing the discharge; and a protective member. At least a portion of the discharge portion is protected from the flow in a specific direction of the gas passing through the discharge electrode. [Effect of the Invention] According to an aspect of the present invention, an effect of suppressing deterioration of discharge performance is exhibited.

Hereinafter, embodiments of the present invention will be described in detail. In the following description, members having the same functions as those of the members shown in the respective embodiments will be denoted by the same reference numerals, and their description will be omitted as appropriate. [Embodiment 1] First, an embodiment of the present invention will be described with reference to Figs. 1 to 3 . (Summary of the ion generating apparatus) Fig. 1 is a perspective view showing a schematic configuration of an ion generating apparatus according to the present embodiment, and Fig. 2 is a front view, a plan view, and a side view showing a schematic configuration of the ion generating apparatus. The ion generating device is used in an electric device such as an air cleaner, and is generated in the electric device by discharging in the air to be blown. However, the present invention is not limited to the ion generating apparatus, and can be applied to any discharge device that generates particles having a high energy state such as electrons, ozone, radicals, and active materials from a gas by discharge. As shown in FIG. 1 and FIG. 2, the ion generating apparatus 1 (discharge apparatus) of the present embodiment includes a casing 11, a discharge control circuit board 12, a step-up transformer 13, a substrate 14 for ion generating elements (mounting member), and a discharge electrode. 15, 16, and insulating sealing material 17. The casing 11 has a flat substantially box shape and is formed of an insulating resin. The casing 11 is provided with an opening 21 including a surface defining a long side and a short side of the three sides of the box shape (the upper surface in the example of FIGS. 1 and 2). Further, a connector 23 for connecting to an external power source is provided at a corner portion of the bottom portion 22 on the outer side of the casing 11. Hereinafter, the side of the opening portion 21 in the casing 11 is set to the upper side, and the side of the bottom portion 22 is set to the lower side. Moreover, the upstream side of the specific blowing direction A is set to the front side, and the downstream side is set to the rear side. In the casing 11, the step-up transformer 13, the discharge control circuit board 12, and the ion generating element substrate 14 are sequentially housed from the bottom portion 22 toward the opening portion 21. Further, an insulating sealing material 17 is filled inside the casing 11. As the insulating sealing material 17, for example, an insulating material such as an epoxy resin or a polyurethane resin can be used. The electrical insulating property between the discharge control circuit board 12, the step-up transformer 13, and the ion generating element substrate 14 is maintained by the insulating sealing material 17. Further, since the opening portion 21 is sealed by the insulating sealing material 17, even if the lid body is not provided in the opening portion 21, particles or the like can be prevented from adhering to the discharge control circuit board 12, the step-up transformer 13, and the ion generating element substrate 14. The discharge control circuit board 12 is an elongated and substantially rectangular circuit board. A transformer drive circuit (not shown) is disposed on the discharge control circuit board 12. The transformer drive circuit drives the step-up transformer 13 by converting a DC voltage from an external power source to a specific AC voltage and applying the converted AC voltage to the step-up transformer 13. The step-up transformer 13 boosts the AC voltage applied by the transformer drive circuit. The ion generating element substrate 14 is an elongated and substantially rectangular circuit board. An ion generating element is disposed on the substrate 14 for ion generating elements. The ion generating element generates at least one of a positive ion and a negative ion by applying an alternating voltage obtained by boosting the step-up transformer 13. The ion generating element includes discharge electrodes 15, 16 and sensing electrodes 31, 32. The discharge electrode 15 is attached to one end of the ion generating element substrate 14, and the induction electrode 31 is formed at a portion around the mounting position of the discharge electrode 15. The discharge electrode 16 is attached to the other end portion of the ion generating element substrate 14, and the induction electrode 32 is formed at a portion around the mounting position of the discharge electrode 16. Further, a connection electrode 33 for electrically connecting the induction electrodes 31 and 32 to each other is provided on the substrate 14 for ion generating elements. The sensing electrode 31 is an electrode for forming an electric field with the discharge electrode 15, and the sensing electrode 32 is for forming an electric field between the discharge electrode 16. The discharge electrode 15 is an electrode for generating a negative ion with the induction electrode 31, and the discharge electrode 16 is for forming a positive ion electrode with the induction electrode 32. Further, the induction electrodes 31 and 32 and the connection electrode 33 have a potential which is paired with the potential of the discharge electrode side of the step-up transformer 13. The discharge electrodes 15 and 16 are vertically disposed from the surface of the ion generating element substrate 14 and protrude from the surface of the insulating sealing material 17. The discharge electrode 15 is a brush-shaped discharge electrode including a plurality of linear conductors 41 and formed into a brush-shaped front end portion 42 (discharge portion) and a base end portion 43 to which the plurality of conductors 41 are mounted. Further, the discharge electrode 16 is a brush-shaped discharge electrode including a plurality of linear conductors 44 and formed into a brush-shaped front end portion 45 (discharge portion) and a base end portion 46 to which the plurality of conductors 44 are mounted. . Further, the front end portions 42 and 45 indicate a portion closer to the front end than the base end portions 43 and 46, specifically, the front ends 41a and 44a of the electric conductors 41 and 44 which are brush-shaped from the base end to the electric conductor 41, A portion of the connection end (contact end) of the base end portions 43, 46. Further, the linear shape includes a filament shape, a fiber shape, and a wire shape. The front end portions 42 and 45 of the discharge electrodes 15 and 16 are formed of a conductive material such as metal, carbon fiber, conductive fiber or conductive resin. The outer diameter of each of the plurality of conductors 41 and 44 in the distal end portions 42 and 45 is 5 μm or more and 30 μm or less. By setting the outer diameters of the conductors 41 and 44 to 5 μm or more, the mechanical strength of the conductors 41 and 44 can be ensured, and the electrical loss of the conductors 41 and 44 can be suppressed. Further, by setting the outer diameters of the conductors 41 and 44 to 30 μm or less, the conductors 41 and 44 which are bent like hair are formed, and the conductors 41 and 44 are easily enlarged and oscillated. Each of the conductors 41 and 44 may be a carbon fiber having an outer diameter of 7 μm or a conductive fiber made of SUS (stainless steel) having an outer diameter of 12 μm or 25 μm. The base end portion 43 of the discharge electrode 15 includes a metal plate-shaped mounting portion 43a for mounting the discharge electrode 15 to the ion generating element substrate 14 and a binding portion 43b for the plural portion of the front end portion 42. The conductors 41 are bundled at the above-mentioned connection ends. Similarly, the base end portion 46 of the discharge electrode 16 includes a metal plate-shaped mounting portion 46a for mounting the discharge electrode 16 to the ion generating element substrate 14 and a binding portion 46b for the front end portion 45. A plurality of conductors 44 are bundled at the connection end. As shown in FIGS. 1 and 2, one of the discharge electrodes 15 and 16 is exposed to the outside from the opening 21 of the casing 11. Therefore, there is a concern that, during the period from the manufacture of the ion generating apparatus 1 to the mounting of various electric machines, for example, the ion generating apparatus 1 is inverted, or the fingers of the operator are in contact with the discharge electrodes 15, 16 of the ion generating apparatus 1, thereby discharging The electrodes 15, 16 are deformed or broken. Therefore, in the present embodiment, the protective plates 51 and 52 (protective members) which are the plate-like members for protecting the discharge electrodes 15 are protruded from the opening 21 of the casing 11 so as to sandwich the discharge electrodes 15. Similarly, the protective plates 53 and 54 (protective members) which are plate-shaped members for protecting the discharge electrodes 16 are protruded from the opening 21 of the casing 11 so as to sandwich the discharge electrodes 16 . The front end portions 51a, 52a of the protective plates 51, 52 protrude above the front end portion 42 of the discharge electrode 15. Similarly, the front end portions 53a, 54a of the protective plates 53, 54 protrude above the front end portion 45 of the discharge electrode 16. Thereby, even when the ion generating apparatus 1 is inverted, for example, the discharge electrodes 15 and 16 can be prevented from coming into direct contact with an object outside the ion generating apparatus 1. Further, it is possible to prevent the fingers of the operator from coming into contact with the discharge electrodes 15 and 16 of the ion generating apparatus 1. As a result, deformation and breakage of the discharge electrodes 15 and 16 can be prevented. Further, it is preferable that the protective plates 51 to 54 are integrally formed with the casing 11. In this case, the manufacturing steps can be reduced, so that the manufacturing cost can be controlled. Openings 51b and 52b (hole portions) are formed in the central portions of the protective plates 51 and 52, respectively. Thereby, ions generated by the discharge of the discharge electrode 15 can flow in the blowing direction A through the openings 51b and 52b, and the ions can be prevented from remaining in the vicinity of the discharge electrode 15. Similarly, openings 53b and 54b (hole portions) are formed in the central portions of the protective plates 53 and 54, respectively. Thereby, ions generated by the discharge of the discharge electrode 16 can flow in the blowing direction A through the openings 53b and 54b, thereby preventing the ions from remaining in the vicinity of the discharge electrode 15. Further, the protective plate 51 and the protective plate 53 are coupled by a connecting plate 55. Thereby, the strength of the protective plate 51 and the protective plate 53 can be increased. Similarly, the protective plate 52 and the protective plate 54 are coupled by the connecting plate 56. Thereby, the strength of the protective plate 52 and the protective plate 54 can be increased. (Positional relationship between the protective plate and the discharge electrode) Fig. 3 is a cross-sectional view of the α-α line of Fig. 2 as viewed in the direction of the arrow, showing the positional relationship between the protective plates 51 and 52 and the discharge electrode 15. Fig. 3(a) shows a state in which a high voltage is not applied to the discharge electrode 15, and Fig. 3(b) shows a state in which a high voltage is applied to the discharge electrode 15. Further, the same applies to the positional relationship between the protective plates 53, 54 and the discharge electrode 16. As shown in Fig. 3(a), when a high voltage is not applied to the discharge electrode 15, the front end 41a of the plurality of linear conductors 41 is closed, and the protection of the upstream side of all the front ends 41a and the blowing direction A is performed. The front end portion 51a of the plate 51 is opposed to each other. That is, for all the conductors 41, the height from the end surface 21a of the opening portion 21 to the front end 41a of the conductor 41 is higher than the surface from the end surface 21a to the lower end portion of the front end portion 51a of the protective plate 51 (the upper surface of the opening portion 51b) The height is lower than the height from the end surface 21a to the upper surface of the front end portion 51a. Thereby, the front end 41a of all the electric conductors 41 is protected from the flow of the blown air. Therefore, the deposits such as dust and particles contained in the air are less likely to adhere to the front end 41a. As a result, deterioration in discharge performance of the discharge electrode 15 can be suppressed. Next, as shown in FIG. 3(b), when a high voltage is applied to the discharge electrode 15, a plurality of (partial) conductors 411 on the outer side of the plurality of conductors 41 are bent (deformed) outward, thereby Its front end 411a starts to discharge. At this time, the front end 411a faces (corresponds to) the opening portion 51b of the protective plate 51. That is, the height from the end surface 21a of the opening portion 21 to the front end 411a of the conductor 411 is lower than the height from the end surface 21a to the lower surface of the front end portion 51a of the protective plate 51 (the upper surface of the opening portion 51b). Therefore, the front end 411a is exposed to the flow of the blown air. therefore. The ions generated by the discharge of the front end 411a can be efficiently moved by the flow of the air described above. On the other hand, the other conductors 412 are not bent outward, and it is difficult to generate a discharge. At this time, the front end 412a faces the front end portion 51a of the protective plate 51, and is protected from the flow of the blown air as in the case of Fig. 3(a). Therefore, the deposit contained in the air is less likely to adhere to the front end 411a. As a result, deterioration in discharge performance of the conductor 412 that does not participate in discharge can be suppressed. After that, when the plurality of conductors 411 are repeatedly discharged, it is difficult to discharge due to adhering to the tip end 411a or the like. At this time, a plurality of (partial) conductors on the outer side of the other conductors 412 are bent outward, and discharge starts at the tip end. Therefore, as described above, ions generated by the discharge of the front end can be efficiently moved by the flow of the above air. Further, since the discharge performance of a plurality of conductors in which the discharge is started in the other conductors 412 is suppressed, the discharge performance can be favorably maintained. As a result, the durability of the ion generating apparatus 1 can be improved. Further, the positional relationship between the discharge electrode 15 and the protective plate 51 located on the upstream side in the blowing direction A of the discharge electrode 15 has been described. In the present embodiment, the discharge electrode 15 is blown further than the discharge electrode 15 The positional relationship of the protective plates 52 on the downstream side of the direction A is also the same. Thereby, the above effects can also be exhibited in the case of blowing in the direction opposite to the blowing direction A. Further, as shown in FIG. 3, the base end portions of the plurality of conductors 41 bundled (fastened) by the binding portion 43b are covered with a protective resin 47. The protective resin 47 can be formed, for example, by irradiating a resin material such as a UV (ultraviolet) curable resin with ultraviolet rays to cure it. Since the protective resin 47 also functions as an adhesive, it is also advantageous in that the base end portions of the plurality of conductors 41 can be bundled more firmly. [Embodiment 2] Another embodiment of the present invention will be described with reference to Fig. 4 . The ion generating apparatus 1 of the present embodiment differs from the ion generating apparatus 1 shown in FIGS. 1 to 3 in that needle-shaped discharge electrodes 151 and 161 are provided instead of the brush-shaped discharge electrodes 15 and 16. Department), the other components are the same. Fig. 4 is a cross-sectional view of the ion generating apparatus 1 of the present embodiment as seen in the direction of the arrow, similar to Fig. 3, showing the positional relationship between the protective plates 51 and 52 and the discharge electrode 151. Further, the positional relationship between the protective plates 53, 54 and the discharge electrode 161 is also the same. As shown in FIG. 4, the front end 151a of the discharge electrode 151 is sharp, and when a high voltage is applied, discharge starts at the front end 151a. The front end 151a of the discharge electrode 151 faces the front end portion 51a of the protective plate 51 on the upstream side in the blowing direction A. That is, the height from the end surface 21a of the opening portion 21 to the front end 151a of the discharge electrode 151 is higher than the height from the end surface 21a to the lower surface of the front end portion 51a of the protective plate 51 (the upper surface of the opening portion 51b), which is lower than The height of the end surface 21a to the upper surface of the front end portion 51a. Thereby, the front end 151a of the discharge electrode 151 is protected from the flow of the blown air. Therefore, the deposits such as dust and particles contained in the air are less likely to adhere to the front end 151a. As a result, deterioration in discharge performance of the discharge electrode 15 can be suppressed. On the other hand, regarding the periphery of the front end 151a of the discharge electrode 151, the upper side is not opposed to the protective plate 51, and the lower side is opposed to the opening 51b of the protective plate 51 of the protective plate 51 (corresponding). Therefore, the air flows through the space adjacent to the front end 151a in the longitudinal direction of the discharge electrode 151, so that ions generated around the front end 151a by the discharge of the front end 151a can be efficiently moved by the flow of the air. . Further, the positional relationship between the discharge electrode 151 and the protective plate 51 located on the upstream side in the blowing direction A of the discharge electrode 151 has been described. In the present embodiment, the discharge electrode 151 is blown further than the discharge electrode 151. The positional relationship of the protective plates 52 on the downstream side of the direction A is also the same. Thereby, the above effects can also be exhibited in the case of blowing in the direction opposite to the blowing direction A. [Embodiment 3] Another embodiment of the present invention will be described with reference to Fig. 5 . The ion generating apparatus 1 of the present embodiment differs from the ion generating apparatus 1 shown in FIGS. 1 to 3 in that a plurality of linear conductors 41 in the front end portions 42 and 45 of the discharge electrodes 15 and 16 are The characteristics of 44 are the same as the other components. Fig. 5 is a side view showing an outline of the discharge electrode 15 in the ion generating apparatus 1 of the present embodiment. Fig. 5(a) shows a state in which a high voltage is not applied to the discharge electrode 15, and Figs. 5(b) to 5(d) show a state in which a high voltage is applied to the discharge electrode 15. Furthermore, (d) of FIG. 5 is a reference example. Further, the discharge electrodes 16 are also the same. The states of the discharge electrodes 15 shown in Figs. 5(a) and 5(b) are the same as those of the discharge electrodes 15 shown in Figs. 3(a) and 3(b), respectively, and thus the description thereof will be omitted. When the plurality of electric conductors 411 are repeatedly discharged, they may be bent as shown in FIG. 5(d) due to adhesion to the tip end 411a. Such a conductor 413 has an increased electrical resistance due to a portion of the bent portion, and thus the discharge performance is lowered. Therefore, in the present embodiment, the conductor 41 has brittleness. The brittleness means a property which is not broken by plastic deformation or a property which is not broken by significant plastic deformation. Furthermore, the conductor 41 may be brittle or may be brittle in construction. Examples of the conductor 41 having brittleness in structure include a porous conductor, a hollow conductor, and the like. With the above configuration, the plurality of conductors 411 are broken as shown in FIG. 5(c) instead of being bent as shown in FIG. 5(d). The conductor 414 remaining in the fracture, that is, the proximal end side portion of the fractured conductor 411 is shorter in length than the other conductors 411 and 412, and is less likely to be deformed outward. Therefore, discharge is difficult. Therefore, one of the other conductors 412 described above is bent outward, so that discharge starts at the front end. As a result, since the discharge performance is maintained, it is possible to prevent the discharge performance from deteriorating due to the bending of the conductor 411. Further, it is preferable that the front end side portion of the broken conductor 411 is moved in the conveying direction A by the flow of the air. In this case, the possibility that the front end side portion adheres to the surface of the insulating sealing material 17 to lower the discharge performance can be reduced. [Embodiment 4] Another embodiment of the present invention will be described with reference to Fig. 6 . In the present embodiment, an electric device including the ion generating apparatus 1 shown in Figs. 1 to 5 will be described. Fig. 6 is a schematic view showing an example of the internal configuration of the electric device of the embodiment. As shown in FIG. 6, the electric device 100 is an example in which the ion generating device 1 is attached to a part of the fan casing 101 which forms the blowing path 102 which guides the ion generated by the ion generating apparatus 1 to the outside. Therefore, in the blowing path 102, the ion generating device 1 and the blowing device 103 that blows and transports the ions generated by the ion generating device 1 are provided. The ion generating device 1 is disposed on the downstream side of the blowing direction A of the blowing device 103. The blowing device 103 may also be a multi-blade blower, a cross flow fan or other fan. Further, the ion generating apparatus 1 may be integrally incorporated into the electric device 100, or may be detachably provided in the electric device 100. By disposing the ion generating apparatus 1 in the electric device 100 detachably, the ion generating apparatus 1 can be replaced or cleaned, and the electric machine 100 can be easily maintained. The electric device 100 is not particularly limited, and may be, for example, an ion generator, an air conditioner, a dehumidifier, a humidifier, an air cleaner, a heater, or the like. The electric machine 100 can be used for home use or for vehicle use. (Variation) In the present embodiment, the case where the electric device 100 includes the blowing device 103 has been described as an example. However, the blowing device 103 is not essential. For example, ions generated by the ion generating device 1 can also be discharged to the outside by heat convection. (Additional Notes) In the above embodiment, the discharge electrode has a brush-shaped front end portion 42 (Figs. 3 and 5) or a needle shape (Fig. 4), and is not limited thereto. The discharge electrode can be an electrode of any shape that can be discharged by a rod shape, a needle shape, a brush shape, a wire shape, a fiber shape, or a planar shape. Further, in the above embodiment, the passage of air through the discharge electrode is not limited thereto. For example, any gas that can be discharged by the discharge electrode, such as oxygen, nitrogen gas, carbon dioxide gas, helium gas, argon gas, or a mixed gas in which two or more of these gases are combined, can be used. Further, in the above embodiment, the two ion generating elements are not limited thereto, and only one ion generating element may be used, or three or more ion generating elements may be used. [Summary] The discharge device (ion generator 1) according to the first aspect of the present invention is a discharge device that performs discharge, and is configured to include a discharge electrode (15, 16) having a discharge portion that performs the above discharge ( The distal end portions 42 and 45) and the protective members (protective plates 51 to 54) protect the at least a portion of the discharge portion from the flow in the specific direction (blowing direction A) of the gas passing through the discharge electrode. According to the above configuration, at least a part of the discharge portion in the discharge electrode is protected from the flow in the specific direction of the gas passing through the discharge electrode, and the adhering matter contained in the gas is less likely to adhere to the discharge portion of the discharge electrode. As a result, deterioration of discharge performance of the discharge electrode described above can be suppressed. According to a second aspect of the present invention, in the aspect 1, the discharge portion includes a plurality of linear conductors (41, 44), and the protective member causes the conductor (411) located outside. The front end (411a) is exposed to the flow of the above gas, and on the other hand, the other end (412a) of the above-mentioned electric conductor (412) is protected from the flow of the above gas. In this case, when a high voltage is applied to the discharge electrode, a portion of the front end of the conductor is deformed outward, and discharge starts at the tip end. At this time, the front end of the above-mentioned part of the conductor located on the outer side is exposed to the flow of the gas. Therefore, the particles generated by the above discharge can be efficiently moved by the flow of the above gas. On the other hand, since the other conductor is not deformed to the outside, the conductor is protected from the flow of the gas, and as a result, deterioration of the discharge performance can be suppressed. Thereafter, when the discharge is repeated and the part of the conductor becomes difficult to discharge, the front end of one of the other conductors is deformed outward, and the discharge is started at the tip end. Therefore, as described above, the particles generated by the discharge can be efficiently moved by the flow of the above gas. Further, since the discharge performance deterioration of one of the other conductors is suppressed, the discharge performance of the discharge electrode can be favorably maintained. As a result, the durability of the discharge device can be improved. In the discharge device of the aspect 3 of the present invention, in the above aspect 2, the electric conductor may be brittle. In this case, the above-mentioned electric conductor is broken without being bent. The conductor remaining in the fracture is shorter in length than the other conductors and is less likely to be deformed to the outside, so that it is difficult to discharge. Therefore, the front end of one of the other conductors described above is deformed outward, so that discharge starts at the front end. Thereby, since the discharge performance is maintained, it is possible to prevent the discharge performance from being lowered due to the bending of the conductor. In the discharge device of the fourth aspect of the invention, the discharge portion (discharge electrodes 151, 161) may be in the shape of a needle, and the protective member protects the front end (151a) of the discharge portion from the gas. On the other hand, the gas flows through a space adjacent to the front end of the discharge portion in the longitudinal direction. In this case, the particles generated around the front end by the discharge can be efficiently moved by the flow of the gas. In the above-described aspects 1 to 4, the discharge device according to the aspect 5 of the present invention may further include a mounting member (the substrate 14 for ion generating element) to which the discharge electrode is mounted, and a case in which the mounting member is housed ( 11) The discharge portion protrudes from the casing, and the protective member is a plate-shaped member that is protruded from the discharge portion toward the upstream side of the flow of the gas, and the protective member is a part of the discharge and the discharge. At least a part of the portion faces the hole portion (opening portions 51b to 54b) through which the gas flows in a portion corresponding to the other portion of the discharge portion. In addition, as long as it is an electric device (100) having the discharge device having the above configuration, the same effects as described above can be exhibited. The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. The embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. . Further, new technical features can be formed by combining the technical means disclosed in the respective embodiments.

1‧‧‧Ion generator (discharge device)

11‧‧‧Shell

12‧‧‧Discharge control circuit substrate

13‧‧‧Step-up transformer

14‧‧‧Substrate for ion generating element (mounting member)

15‧‧‧Discharge electrode

16‧‧‧Discharge electrode

17‧‧‧Insulating sealing material

21‧‧‧ openings

21a‧‧‧ end face

22‧‧‧ bottom

23‧‧‧Connector

31‧‧‧Induction electrodes

32‧‧‧Induction electrodes

33‧‧‧Connecting electrode

41‧‧‧Electric conductor

41a‧‧‧ front end

42‧‧‧ front end (discharge section)

43‧‧‧ base end

43a‧‧‧Installation Department

43b‧‧‧Bundle Department

44‧‧‧Electrical conductor

44a‧‧‧ front end

45‧‧‧ front end (discharge section)

46‧‧‧ base end

46a‧‧‧Installation Department

46b‧‧‧Bundle Department

47‧‧‧Protective resin

51～54‧‧‧Protection board (protective member)

51a～54a‧‧‧ front end

51b～54b‧‧‧ openings (holes)

55‧‧‧Link board

56‧‧‧Link board

100‧‧‧Electrical machines

101‧‧‧Furniture casing

102‧‧‧Blowing path

103‧‧‧Blowing device

151‧‧‧Discharge electrode (discharge section)

151a‧‧‧ front end

161‧‧‧Discharge electrode (discharge section)

411～414‧‧‧Electric conductor

411a‧‧‧ front end

412a‧‧‧ front end

A‧‧‧ blowing direction

Fig. 1 is a perspective view showing a schematic configuration of an ion generating apparatus according to an embodiment of the present invention. 2(a) to 2(c) are a front view, a plan view, and a side view showing a schematic configuration of the ion generating apparatus. 3(a) and 3(b) are cross-sectional views of the α-α line of Fig. 2 as seen in the direction of the arrows, and show the positional relationship between the protective plate and the discharge electrode in the ion generating apparatus. Fig. 4 is a cross-sectional view of the ion generating apparatus according to another embodiment of the present invention as seen in the direction of the arrow, and showing a positional relationship between the protective plate and the discharge electrode in the ion generating apparatus. 5(a) to 5(d) are side views showing an outline of a discharge electrode in an ion generating apparatus according to still another embodiment of the present invention. Fig. 6 is a schematic view showing an example of the internal configuration of an electric device according to another embodiment of the present invention.

Claims (7)

A discharge device characterized in that it is a discharger, and includes: a discharge electrode having a discharge portion that performs the discharge; and a protection member that protects at least a portion of the discharge portion from a gas passing through the discharge electrode The impact of the flow of direction. The discharge device of claim 1, wherein the discharge portion includes a plurality of linear conductors, wherein the protective member exposes a front end of the conductor located outside and a flow of the gas, and protects the other conductor The front end is protected from the flow of the above gases. A discharge device according to claim 2, wherein said electric conductor is brittle. The discharge device of claim 3, wherein the electrical conductor is porous. The discharge device according to claim 1, wherein the discharge portion has a needle shape, and the protective member protects the front end of the discharge portion from the flow of the gas, and the gas flows through the front end of the discharge portion A space adjacent in the length direction. The discharge device according to any one of claims 1 to 5, further comprising: a mounting member for mounting the discharge electrode; and a housing accommodating the mounting member; the discharge portion protruding from the housing, the protective member a plate-shaped member protruding from the discharge portion on the upstream side of the flow of the gas, wherein the protective member is partially opposed to at least a portion of the discharge portion, and corresponds to another portion of the discharge portion A portion is formed to provide a hole through which the gas flows. An electric machine comprising the discharge device of any one of claims 1 to 6.