Discharging device and air conditioner

Abstract

A discharge device (100) is provided with a connector (70), a step-up unit (81), a discharge electrode (30), and a main body (60). A voltage is applied to the connector (70) from the outside. The step-up unit (81) steps up the voltage applied to the connector (70). The discharge electrode (30) discharges by the voltage boosted by the boost unit (81). The main body (60) accommodates the connector (70) and the discharge electrode (30). The main body (60) has an opening portion (66) surrounding the discharge electrode (30) and a plurality of folded portions (50) folded back from predetermined directions (13, 20). At least one of the plurality of folded portions (50) is formed in the opening portion (66).

Description

Technical Field

[0001] The invention relates to a discharge device and an air conditioner. Background Art

[0002] The electric dust collection unit described in Patent Document 1 includes a discharge electrode constituting a discharge device, a low voltage terminal, and a rib. The rib is provided between the discharge electrode and the low voltage terminal. In order to suppress the generation of leakage current, the rib is located higher than the discharge electrode. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2018-140362 Summary of the invention Technical Problems to be Solved by the Invention

[0004] However, in actual use, water droplets and dirt caused by condensation may adhere to the ribs of the electrostatic precipitator unit described in Patent Document 1. When water droplets and dirt caused by condensation adhere, leakage current may occur along the surface of the ribs with a simple shape.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a discharge device capable of sufficiently suppressing leakage current even in a severe environment. Solutions for solving problems

[0006] The discharge device of the first aspect of the present invention comprises a connector, a booster, a discharge electrode and a main body. A voltage is applied to the connector from the outside. The booster boosts the voltage applied to the connector. The discharge electrode discharges using the voltage boosted by the booster. The main body accommodates the connector and the discharge electrode. The main body has an opening surrounding the discharge electrode and a plurality of folded back portions folded back from a predetermined direction. At least one of the plurality of folded back portions is formed in the opening.

[0007] The air conditioner of the second aspect of the present invention comprises the discharge device of the first aspect, a voltage applying unit and an air supply unit. The voltage applying unit applies voltage to a connector of the discharge device. The air supply unit supplies air. The discharge device is arranged in a direction in which the air supplied by the air supply unit passes through the protection frame. Effects of the Invention

[0008] According to the discharge device and the air conditioner of the present invention, leakage current can be sufficiently suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a partially cutaway perspective view showing the discharge device according to the first embodiment. Figure 2 It is a perspective view showing an enlarged longitudinal section of the discharge device according to the first embodiment. Figure 3 It is an exploded perspective view showing, in an enlarged manner, a case and a cover of a main body included in the discharge device according to the first embodiment. Figure 4 It is a perspective view showing a discharge device according to a second embodiment. Figure 5 It is an enlarged longitudinal sectional view showing the discharge device of the second embodiment. Figure 6 It is a perspective view showing a modified example of the discharge device according to the second embodiment. Figure 7 This is a perspective view of an air conditioner equipped with a discharge device. Figure 8 This is a perspective view of a discharge device provided in an air conditioner. DETAILED DESCRIPTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the drawings, the same or corresponding parts are marked with the same reference numerals, and the description is not repeated. In addition, in the following description, even if the terms indicating specific positions and directions such as "upper", "lower", "left", "right", "front" or "back" are sometimes used, these terms are used to facilitate understanding of the contents of the embodiments and have nothing to do with the directions in actual implementation. [Implementation Method 1]

[0011] Reference Figures 1 to 3 , the discharge device 100 according to the first embodiment is described.

[0012] Figure 1 It is a partially cutaway perspective view showing the discharge device 100 according to the first embodiment. Figure 2 It is a perspective view showing an enlarged longitudinal section of the discharge device 100 according to the first embodiment. Figure 3 It is an exploded perspective view showing, in an enlarged manner, a case 61 and a cover 65 of a main body 60 included in the discharge device 100 according to the first embodiment.

[0013] like Figure 1As shown, the discharge device 100 includes a connector 70, a booster 81, a discharge electrode 30, and a main body 60. A voltage is applied to the connector 70 from the outside. The booster 81 is composed of a printed circuit board and a booster transformer (both not shown) as a part of the electronic component group 80, and boosts the voltage applied to the connector 70. The discharge electrode 30 discharges by the voltage boosted by the booster 81. The main body 60 accommodates the connector 70 and the discharge electrode 30. The main body 60 has an opening 66 surrounding the discharge electrode 30 and a plurality of folded back portions 50 folded back in a predetermined direction. At least one of the plurality of folded back portions 50 is formed in the opening 66. Therefore, the folded back portion 50 is located on the creeping path 40 in the main body 60. The creeping path 40 is a path where the charge generated by the discharge of the discharge electrode 30 may flow to the connector 70, but the flow of the charge is blocked by the folded back portion 50.

[0014] The creeping path 40 becomes long and complicated by having a plurality of folded portions 50, and thus sufficiently hinders the flow of charge. Therefore, the discharge device 100 can sufficiently suppress leakage current. In addition, since the creeping path 40 has a plurality of folded portions 50, the creeping path 40 becomes long even if the main body 60 is not enlarged. Therefore, the discharge device 100 does not enlarge and can sufficiently suppress leakage current.

[0015] The base end side of the discharge electrode 30 is connected to the voltage booster 81, and the front end discharges. Compared with the wire electrode (not shown), the discharge electrode 30 is more preferably a rod electrode (not shown) or a needle electrode 30. The wire electrode is an electrode formed of a plurality of conductive fibers (such as metal fibers) in a bundle. The rod electrode is an electrode made of a rod-shaped conductive material. The needle electrode 30 is an electrode made of a needle-shaped conductive material thinner than the base end side.

[0016] The wire electrode does not discharge from the front ends of all the conductive fibers at once, but discharges from the front ends of each conductive fiber separately. On the other hand, the rod electrode and the needle electrode 30 discharge from the front end of a single conductive material. Therefore, the rod electrode and the needle electrode 30 discharge stably compared to the wire electrode. In particular, the needle electrode 30 is a sharpened needle shape, in other words, a shape in which the electric field is easily concentrated at a point at the front end where discharge is performed, and therefore discharges stably compared to the rod electrode.

[0017] In the wire electrode, it is considered that when discharge is performed from the conductive fiber close to the connector 70 side, the connector 70 and the position where the discharge is performed become closer. In other words, in the rod electrode and the needle electrode 30, it is considered that the connector 70 and the position where the discharge is performed are farther than in the wire electrode. Therefore, in the rod electrode and the needle electrode 30, the leakage current to the connector 70 caused by the charged particles generated by the discharge can be further suppressed than in the wire electrode. In addition, in the wire electrode, it is considered that when discharge is performed from the conductive fiber close to the main body 60 side, the charge generated by the discharge is easily accumulated in the main body 60 (easy to be charged). In other words, in the rod electrode and the needle electrode 30, it is considered that the charge caused by the discharge is difficult to accumulate in the main body 60 (difficult to be charged) compared with the wire electrode. Therefore, in the rod electrode and the needle electrode, it is considered that the leakage current caused by the charging of the main body 60 can be further suppressed than in the wire electrode.

[0018] The discharge device 100 may include one discharge electrode 30 or more than two discharge electrodes 30, 35. When the discharge device 100 includes more than two discharge electrodes 30, 35, it is sufficient to form a plurality of folded portions 50 on the creeping path 40 of at least the discharge electrode 30 on the side closest to the connector 70. This is because the discharge electrode 30 on the side closest to the connector 70 is prone to leakage current.

[0019] For example, one of the two discharge electrodes 30, 35 releases positive ions by discharge. Positive ions are hydrogen ions (H + ) is a cluster ion [H + (H2O) m (m is any positive number greater than 0)]. Further, for example, the other of the two discharge electrodes 30, 35 releases negative ions by discharge. Negative ions are oxygen ions (O2 - ) is surrounded by a cluster of water molecules [O2 - (H2O) n (n is any positive number greater than 0)].

[0020] When positive ions are released by discharge electrode 30 on the side close to connector 70, the charges whose flow is blocked at folded portion 50 are positive charges. On the other hand, when negative ions are released by discharge electrode 30 on the side close to connector 70, the charges whose flow is blocked at folded portion 50 are negative charges.

[0021] like Figure 2As shown, the plurality of folding portions 50 are the first folding portion 51, the second folding portion 52, and the third folding portion 53 in order from near to far from the discharge electrode 30. The prescribed direction 13 of the first folding portion 51 and the third folding portion 53 is different from the prescribed direction 20 of the second folding portion 52. Specifically, the prescribed direction 13 of the first folding portion 51 and the third folding portion 53 is the direction from the discharge electrode 30 to the connector 70 (X direction). The prescribed direction 20 of the second folding portion 52 is the direction orthogonal to the direction from the discharge electrode 30 to the connector 70 (Z direction). That is, among the plurality of folding portions 50, the prescribed direction 13 of any folding portion 51 or 53 is different from the prescribed direction 20 of the other folding portions 52.

[0022] Therefore, even if water drops and dirt caused by condensation attached to the plurality of folded portions 50 flow in any of the predetermined directions 13 and 20 due to their own weight, they do not flow in the other predetermined directions 20 and 13. As a result, the discharge device 100 can ensure the folded portions 50 where water drops and dirt do not flow, regardless of the posture. Therefore, the discharge device 100 can fully suppress leakage current regardless of the posture.

[0023] like Figure 2 As shown, it is preferable that the predetermined direction 13 of any of the folded portions 51 and 53 is orthogonal to the predetermined direction 20 of the other folded portion 52. By making them orthogonal, the folded portion 50 that is not affected by water droplets, dirt, etc. can be reliably ensured regardless of the posture of the discharge device 100. Therefore, the leakage current can be reliably suppressed regardless of the posture of the discharge device 100.

[0024] The main body 60 has a protection frame 67. The protection frame 67 protects the front end of the discharge electrode 30. The protection frame 67 has a plurality of large vents 68 and a plurality of small vents 69. The side of the plurality of small vents 69 closest to the discharge electrode 30 constitutes the second folded portion 52. The protection frame 67 is provided on the opening 66. Therefore, it can be said that the second folded portion 52 is formed on the opening 66.

[0025] like Figure 3 As shown, the main body 60 has a housing 61 and a cover 65. The housing 61 is provided with a connector 70 and a discharge electrode 30. The cover 65 is assembled to the housing 61. The housing 61 has a portion in close contact with the cover 65 at least between the discharge electrode 30 and the connector 70.

[0026] Since the case 61 and the cover 65 are in close contact between the discharge electrode 30 and the connector 70, there is no gap at the boundary between the case 61 and the cover 65. Therefore, no leakage current is generated via the boundary, and thus the leakage current can be sufficiently suppressed.

[0027] The housing 61 has a partition wall 62. The partition wall 62 surrounds the discharge electrode 30. The partition wall 62 is, for example, a rectangular frame in a plan view. In the housing 61, the upper end of the partition wall 62 is in close contact with the cover 65. In the upper end of the partition wall 62, at least one side located between the discharge electrode 30 and the connector 70 is in close contact with the cover 65. It is preferred that all sides (four sides), that is, the entire circumference, are in close contact with the cover 65 in the upper end of the partition wall 62. This is because the more parts that are in close contact, the more the path that may generate leakage current will be cut off.

[0028] The close contact between the cover 65 and the housing 61 is preferably bonding using an adhesive. This is because the gap can be reliably prevented by bonding using an adhesive. In the close contact between the cover 65 and the housing 61, abutment is preferred rather than engagement by claws or the like. By abutment, manufacturing can be facilitated.

[0029] The housing 61 further includes an electronic component group 80. The electronic component group 80 is disposed inside the partition wall 62. The electronic component group 80 electrically connects the connector 70 and the discharge electrode 30. The electronic component group 80 includes a voltage step-up unit 81 and various electronic components (not shown) so that discharge can be performed at the discharge electrode 30.

[0030] The housing 61 further includes an insulating material 63. The insulating material 63 is filled inside the partition wall 62. The insulating material 63 buries the base end side of the discharge electrode 30 and the electronic component group 80.

[0031] By burying the base end side of the discharge electrode 30 with the insulating material 63, leakage current can be sufficiently suppressed. In addition, by burying the electronic component group 80 with the insulating material 63, the electronic component group 80 can be protected. The insulating material 63 is preferably a resin. If the insulating material 63 is a resin, manufacturing can be facilitated. [Implementation Method 2]

[0032] Next, refer to Figures 4 to 6 A discharge device 100 according to a second embodiment will be described. In the second embodiment, the positions of the plurality of folded portions 50 are different from those in the first embodiment. The differences between the second embodiment and the first embodiment will be described below.

[0033] Figure 4 It is a perspective view showing a discharge device 100 according to a second embodiment. Figure 5 It is an enlarged longitudinal sectional view showing the discharge device 100 according to the second embodiment. Figure 6 It is a perspective view showing a modified example of the discharge device 100 according to the second embodiment.

[0034] like Figure 4As shown, the cover 65 has an opening 66. The opening 66 surrounds the discharge electrode 30. A plurality of folded portions 50 are formed on the opening 66. The predetermined direction 13 of the plurality of folded portions 50 intersects with the direction from the discharge electrode 30 toward the connector 70.

[0035] The predetermined direction 13 passing through the plurality of folded portions 50 intersects with the direction from the discharge electrode 30 toward the connector 70, so that the creeping path 40 becomes long and complicated, thereby sufficiently hindering the flow of charge. Therefore, the discharge device 100 can sufficiently suppress the leakage current. In addition, since the plurality of folded portions 50 are formed in the opening 66, the creeping path 40 becomes long even if the main body 60 is not enlarged. Therefore, the discharge device 100 does not enlarge and can also sufficiently suppress the leakage current.

[0036] The direction from the discharge electrode 30 toward the connector 70 is, for example, the shortest direction (X direction) from the discharge electrode 30 toward the connector 70. Preferably, the predetermined direction 13 (±Y direction) of the plurality of folded portions 50 is orthogonal to the direction (X direction) from the discharge electrode 30 toward the connector 70. By being orthogonal, the plurality of folded portions 50 further hinder the flow of charge, and thus the leakage current can be further suppressed.

[0037] like Figure 4 and Figure 5 As shown, the front end of the discharge electrode 30 protrudes from the opening 66. Specifically, the base end of the discharge electrode 30 protrudes from the opening 66 toward the housing 61 side (-Z side), and the front end protrudes from the opening 66 toward the opposite side of the housing 61 (Z side).

[0038] If the front end of the discharge electrode 30 is made to protrude from the opening 66, the ions released by the discharge can be increased. Generally speaking, as the number of released ions increases, the charge accumulated in the opening 66 (charged to the opening 66) also increases, so leakage current is likely to occur. However, by forming a plurality of folded portions 50 in the opening 66, the leakage current can be suppressed. Therefore, the discharge device 100 can increase the ions released while suppressing the leakage current.

[0039] The cover body 65 has a detachable member 90. The detachable member 90 is formed with an opening 66. Figure 4 and Figure 5 The opening 66 shown in FIG. 1 is opened by removing the detachable component 90, such as Figure 6 As shown, the opening 96 becomes larger.

[0040] Below, we will Figure 6 The discharge device 100 shown will be described as a modified example of the second embodiment.

[0041] like Figure 6As shown, the predetermined direction 20 (-Z direction) of the plurality of folded portions 50 formed in the opening 96 is orthogonal to the direction (X direction) from the discharge electrode 30 toward the connector 70. Specifically, the predetermined direction 20 of the plurality of folded portions 50 is the direction (-Z direction) from the cover 65 toward the housing 61.

[0042] The predetermined direction 20 of the plurality of folded portions 50 is the direction from the cover 65 toward the housing 61 (-Z direction), so that the opening 66 can be enlarged in the ±Y directions. Therefore, the distance from the discharge electrode 30 to the edge of the opening 66 becomes farther. As a result, the leakage current caused by the charging of the housing 61 (edge ​​of the opening 66) can be further suppressed.

[0043] In addition, the discharge device 100 of the second embodiment is shown in the figure without the protection frame 67, but similarly to the first embodiment, it may also have Figures 1 to 3 The protective frame 67 shown. Figure 1 The protection frame 67 will be described in detail.

[0044] like Figure 1 As shown, the cover 65 has a protection frame 67. The protection frame 67 can protect the front ends of the discharge electrodes 30 and 35.

[0045] Specifically, the cover 65 has a protection frame 67 for each discharge electrode 30, 35. A plurality of large vents 68 in the protection frame 67 open in the ±Y direction. A plurality of small vents 69 in the protection frame 67 open in the ±X direction. The arrangement of the large vents 68 and the small vents 69 is not limited to Figure 1 The illustrated example may be configured such that wind directed toward the protection frame 67 is guided to the discharge electrodes 30 and 35 and is sent out from the protection frame 67 .

[0046] Below, refer to Figure 7 and Figure 8 An air conditioner 110 including the discharge device 100 will be described.

[0047] Figure 7 It is a perspective view of an air conditioner 110 including the discharge device 100 . Figure 8 It is a perspective view of the discharge device 100 arranged in the air conditioner 110.

[0048] like Figure 7 As shown, the air conditioner 110 is an air conditioner 110, an air purifier, a humidifier, or a dehumidifier. Figure 7 An example in which the air conditioner 110 is an air conditioner 110 is shown.

[0049] like Figure 7As shown, the air conditioner 110 includes a discharge device 100, a voltage applying unit 101, and an air blowing unit 102. The discharge device 100 is the discharge device 100 of the first or second embodiment. The voltage applying unit 101 applies a voltage to the connector 70 of the discharge device 100. The air blowing unit 102 is, for example, a sirocco fan, and blows out air W.

[0050] The air conditioner 110 further includes a heat exchange fin 103, an indoor drain pan 104, a wall drain pan 105, an up-down wind direction louver 106, and a curved plate 107. The heat exchange fin 103 is configured to surround the air supply unit 102 from the indoor side, the upper part, and the wall side. The indoor drain pan 104 is configured below the indoor side of the heat exchange fin 103. The wall drain pan 105 is configured below the wall side of the heat exchange fin 103. The curved plate 107 is configured to surround the air supply unit 102 from the wall side and below. The up-down wind direction louver 106 is configured below the indoor drain pan 104. The wind W from the air supply unit 102 is guided by the up-down wind direction louver 106 from between the indoor drain pan 104 and the curved plate 107 and is sent indoors.

[0051] The discharge device 100 is disposed on the indoor side drain pan 104 side of the air conditioner 110 between the indoor side drain pan 104 and the curved plate 107. Figure 8 As shown in FIG. 1 , the discharge device 100 is arranged in a direction where the wind W from the air supply unit 102 passes through the protection frame 67. The wind W passing through the protection frame 67 means that the wind W toward the protection frame 67 is guided to the discharge electrodes 30 and 35 and is sent out from the protection frame 67. Specifically, the wind W entering from one large vent 68 formed in the protection frame 67 reaches the discharge electrodes 30 and 35 and is sent out from another large vent 68 formed in the protection frame 67.

[0052] By arranging the discharge device 100 in the direction in which the wind W passes through the protection frame 67 , the air conditioner 110 can make the wind W toward the room contain sufficient ions while suppressing leakage current.

[0053] The embodiments of the present invention are described above with reference to the accompanying drawings. However, the present invention is not limited to the above-mentioned embodiments, and can be implemented in various ways within the scope of the main purpose thereof. For example, the discharge device 100 can also be configured to rotate 180° around the X-axis. In addition, various inventions can be formed by appropriately combining the multiple components disclosed in the above-mentioned embodiments. For example, some components can also be deleted from all the components shown in the embodiments. Moreover, the components in embodiments one and two can also be appropriately combined. In addition, the components of different embodiments can also be appropriately combined. For ease of understanding, the accompanying drawings are schematically shown with their respective components as the main body, and the thickness, length, number, spacing, etc. of the components shown in the drawings are different from the actual ones for the convenience of drawing. In addition, the speed, material, shape, size, etc. of the components shown in the above-mentioned embodiments are examples, and are not particularly limited. Various changes can be made within the scope of the composition of the present invention.

[0054] (1) In the discharge device 100 of the first and second embodiments, the main body 60 accommodates the connector 70 and the discharge electrodes 30 and 35. The connector 70 and the discharge electrodes 30 and 35 are not limited to being completely accommodated in the main body 60, but may be partially accommodated in the main body 60. Figure 8 In the example shown, the connector 70 is partially housed in the main body 60 (the outer housing 61 ).

[0055] (2) Figure 8 In the example shown, although three small vents 69 are shown in the figure, the vents may be of any number and shape as long as the folded portion 50 is formed in the protection frame 67 between the discharge electrode 30 and the connector 70. By making the small vents 69 also serve as the folded portion 50, the leakage current can be sufficiently suppressed without increasing the size of the discharge device 100.

[0056] (3) The discharge device 100 may include both the folded-back portion 50 of the first embodiment and the folded-back portion 50 of the second embodiment. Since the discharge device 100 includes both the folded-back portion 50 of the first embodiment and the second embodiment, leakage current can be reliably suppressed. Industrial Applicability

[0057] The present invention provides a discharge device and an air conditioner, and has industrial applicability. Description of Reference Numerals

[0058] 30 discharge electrode 40 Along the surface path 50 fold back 51 First fold 52 Second fold 53 The third turn 60 Main Body 61 Shell 62 partition wall 63 Insulation Materials 65 cover 66 opening 67 protection frame 68 large vents 69 small vent 70 Connectors 80 electronic components set 81 booster 90 Disassembled Parts 100 discharge device 101 voltage applying unit 102 Air supply department 103 heat exchange radiator 104 Indoor side drain pan 105 wall side drain pan 106 Up and down wind direction louvers 107 bent plate 110 Air Conditioning

Claims

1. A discharge device, comprising: A connector to which a voltage is applied from the outside; a voltage boosting unit configured to boost a voltage applied to the connector; a discharge electrode for discharging using the voltage boosted by the boosting unit; as well as a main body, which accommodates the connector and the discharge electrode, The subject has: an opening surrounding the discharge electrode; and A plurality of folded portions folded back from a predetermined direction, At least one of the plurality of folded portions is formed at the opening.

2. The discharge device according to claim 1, characterized in that: The discharge electrode is a needle electrode whose tip is thinner than its base end.

3. The discharge device according to claim 1 or 2, characterized in that: Among the plurality of folded-back portions, a prescribed direction of any one folded-back portion is different from prescribed directions of the other folded-back portions.

4. The discharge device according to claim 1 or 2, characterized in that: The subject has: a housing provided with the connector and the discharge electrode; and a cover body assembled on the housing, The housing is in close contact with the cover at least between the discharge electrode and the connector.

5. The discharge device according to claim 4, characterized in that: The case includes an insulating material in which a base end side of the discharge electrode is buried.

6. The discharge device according to claim 4, characterized in that: The cover has the opening surrounding the discharge electrode, The plurality of folded portions are formed on the opening portion, A predetermined direction of the plurality of folded portions intersects with a direction from the discharge electrode toward the connector.

7. The discharge device according to claim 6, characterized in that: The front end of the discharge electrode protrudes from the opening.

8. The discharge device according to claim 7, characterized in that: The cover body has a protection frame for protecting the front end of the discharge electrode.

9. An air conditioner, comprising: The discharge device as claimed in claim 8; a voltage applying unit for applying a voltage to the connector; as well as The air supply unit supplies air. The discharge device is disposed in a direction in which the wind blown by the air blowing unit passes through the protection frame.

Images