JP2015163206A - Discharge device and product having discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge device with reduced pressure drop.SOLUTION: A discharge device 1000 includes: a counter electrode 700 on the lower potential side composed of a plurality of planar parts 731 in a longitudinal sheet form arranged approximately in parallel, a first connection part 733R for connecting one longitudinal ends of the planar parts 731, and a second connection part 733L for connecting the other ends of the planar parts 731, which are integrally formed into a sheet of conductive tabular body; and a discharge electrode 300 in a filament form disposed on the higher potential side than the counter electrode 700 between the planar plates 731 along the longitudinal direction.

Description

  The present invention relates to a discharge device that efficiently removes and inactivates bacteria, fungi, viruses and the like floating in a room.

  In a conventional discharge device that discharges and forms an electric field, in order to reduce pressure loss, an air flow path is formed inside the housing, and a plurality of conductive plates are arranged at intervals across the flow path diagonally. Some are provided (see, for example, Patent Document 1).

  In order to improve the air cleaning performance, there are some devices that use a plurality of counter electrodes bent in a U shape inside a device using a positioning tool or the like (see, for example, Patent Document 2).

No. 2-48047 JP 2009-165957 A

  In conventional discharge devices that form electric discharges and electric fields, the counter electrodes may be inclined with respect to the air flow path in order to reduce pressure loss. In either case, the counter electrodes are separated one by one. Therefore, there are problems that it takes time to assemble, the number of parts increases, and it is difficult to fix a plurality of counter electrodes to a fixture.

  Further, when the counter electrode portion is cut from the flat plate as one part, there is a problem that the pressure loss increases due to the belt portion. In addition, an arbitrary shape can be created by using a resin. However, a conductive resin in which carbon or the like instead of a metal is kneaded has a problem of high cost and unstable electrical conduction.

  An object of the present invention is to reduce pressure loss. The purpose is to make the device compact. Another object of the present invention is to improve the ease of assembly of the discharge device.

The discharge device of the present invention is
Two or more flat plate portions having a flat shape in a longitudinal shape, each flat plate portion having two or more flat plate portions aligned in a direction perpendicular to the longitudinal direction with the longitudinal direction of the longitudinal shape aligned. A counter electrode;
Disposed along the longitudinal direction between the adjacent flat plate portions, a linear discharge electrode having a higher potential than the counter electrode, and
An upper frame disposed above the counter electrode and the discharge electrode;
A lower frame disposed below the counter electrode and the discharge electrode;
Between the upper frame and the lower frame, provided with an intermediate frame disposed on the left end and the right end in the left-right direction of the lower frame,
At least one of the lower frame and the intermediate frame is
The discharge electrode has a folded portion that is folded.
The discharge device further includes:
An upper restricting portion for restricting an upper position of the discharge electrode in the folded portion, and a lower restricting portion for restricting a position below the discharge electrode in the folded portion,
The upper restricting portion and the lower restricting portion are:
The lower frame is shifted in the left-right direction.

  According to this invention, the ease of assembly of the discharge device is improved.

1 is a perspective view of an air conditioner 3000 according to Embodiment 1. FIG. The figure which shows the attachment state to the air conditioner 3000 of the discharge device 1000 of Embodiment 1. FIG. Section F-F of the air conditioner 3000 according to the first embodiment. FIG. 3 is an exploded view of the discharge device 1000 according to the first embodiment. FIG. 3 is an exploded view of the support section assembly 2000 according to the first embodiment. FIG. 3 is a top view of the discharge device 1000 in a state where the prefilter 100 and the upper frame 200 are removed from the discharge device 1000 according to the first embodiment. FIG. 5 is a cross section corresponding to a cross section AA in FIG. 4. FIG. 3 is a perspective view of a counter electrode 700 according to the first embodiment. Section BB of FIG. 8, section CC. The perspective view of the conventional counter electrode. The figure which shows the cross section DD of FIG. 8, and a connection part. The figure which shows the positional relationship of the counter electrode 700 and discharge electrode 300 of Embodiment 1 (cross section corresponding to the cross section AA of FIG. 6). FIG. 3 is a perspective view showing a right intermediate frame 500 and a left intermediate frame 600 according to the first embodiment. The figure which shows the assembly | attachment state of the left intermediate | middle frame 600 and lower frame 800 of Embodiment 1. FIG. The figure which shows the detail of the spring attaching part of Embodiment 1. FIG. The figure which shows the drain holes 842a and 842b of the lower frame 800 of Embodiment 1. FIG. FIG. 3 is a perspective view of a lower frame 800 according to the first embodiment. FIG. 5 shows an extension part 507 according to the first embodiment. FIG. 5 is another view showing the extending portion of the first embodiment. The figure which shows the relationship of the creeping distance of the low voltage | pressure side connection part 710 of Embodiment 1, and the high voltage | pressure side electric power feeding terminal 709. FIG. FIG. 3 shows a discharge electrode 300 according to the first embodiment. FIG. 3 is a perspective view illustrating a counter electrode different from the counter electrode 700 according to the first embodiment. FIG. 5 shows a relationship between a connection portion 733 of the counter electrode 700 according to Embodiment 1 and an upper rib 201 and a lower rib 844. 1 is a perspective view of a discharge device 1000 (a state in which an upper frame 200 is removed) according to Embodiment 1. FIG. FIG. 3 is a perspective view showing a counter electrode contact rib 202 on the back side of the upper frame 200 according to the first embodiment. Sectional drawing for demonstrating the function of the counter electrode contact rib 202 of Embodiment 1. FIG.

Embodiment 1 FIG.
The discharge apparatus 1000 of Embodiment 1 is demonstrated using FIGS. 1-26. The discharge device 1000 is used, for example, in an air conditioner and inactivates airborne bacteria and viruses contained in the air. FIG. 1 is a perspective view of an air conditioner 3000 to which a discharge device 1000 is attached. FIG. 2 is a diagram illustrating a state in which the discharge device 1000 is attached to the air conditioner 3000. 2 shows a state where the panel 3070 is removed from the air conditioner 3000 of FIG. FIG. 3 shows a section FF of FIG.

  FIG. 4 is an exploded perspective view of discharge device 1000 that discharges and generates an electric field in the first embodiment. FIG. 5 is an exploded view of the support assembly 2000. The support unit assembly 2000 includes a discharge device 1000, a support unit 1500, a high-voltage board 1530 related to the support unit 1500, a support-side high-voltage terminal 1570, a support-side low-voltage terminal 1560, and “a high-voltage board 1530, a support-side high-voltage terminal 1570, a support side. And a high voltage board cover 1540 for attaching a low voltage terminal 1560 to the support unit 1500. FIG. 6 is a top view of the discharge device 1000 with the prefilter 100 and the upper frame 200 removed from the discharge device 1000. FIG. 7 is a cross section corresponding to the cross section AA of FIG. 4 (or FIG. 6). As shown in FIGS. 6 and 7, the long side of the discharge device 1000 is the left-right direction (X direction in FIG. 6), the short side is the vertical direction (Y direction in FIG. 6), and the upper frame 200 and the lower frame 800 are The overlapping direction is the height direction (Z direction in FIG. 7).

(Configuration of discharge device 1000)
In FIG. 4, in order from the windward side (in order from the top in the figure), the discharge device 1000 is formed of a pre-filter 100 in which a net is insert-molded into a resin frame, an upper frame 200 formed of an insulating resin, and metal. The discharge electrode 300 to which a high voltage is applied, the spring 400 formed of a metal that pulls the discharge electrode 300, the right middle frame 500 (upper holding frame) and the left middle frame 600 (upper side) between the upper frame 200 and the lower frame 800 Holding frame), a counter electrode 700 made of metal and serving as a GND electrode (0 V), a metal high voltage side power supply terminal 709 connected to a high voltage substrate 1530 for supplying a high voltage of 3 to 7 kV to the discharge electrode 300, and a GND line A low-voltage side connection portion 710 connected to (not shown) and a lower frame 800 formed of an insulating resin.

(Functional description of the discharge device 1000)
As shown in FIG. 4, the discharge device 1000 is a charging device including only the discharge electrode 300 and the counter electrode 700. The discharge device 1000 does not include a dust collection unit. As shown in FIG. 7, the air flow flows in from above the upper frame 200, and “discharge space and electric field space” formed by the discharge electrode 300 and the counter electrode 700 (around the wire 303 in FIG. 12B). Through the lower frame 800. Airborne viruses and airborne bacteria are inactivated by being discharged when passing through these spaces. Receiving a discharge means that a component in the air is excited by a high voltage and collides while having energy. In addition, when a bacterium receives a high electric field at the same time, a polarization charge is generated in the cell membrane of the bacterium and pores are formed inside, and then a hole that cannot be repaired is opened, so that the bacterium is easily inactivated. Viruses are also more susceptible to inactivation due to strong discharge effects when they are affected by an electric field. Therefore, even if it is only a charging device composed of the discharge electrode 300 and the counter electrode 700 that does not have a dust collecting part, the force for collecting dust is inferior to that of a two-stage dust collector consisting of a charging part and a dust collecting part. However, it has a strong effect on the viruses and fungi that pass through it. Therefore, the discharge device 1000 inactivates the passing virus and bacteria with high efficiency.

(Pressure loss of discharge device 1000)
Since the configuration of the discharge device 1000 is only the charging device as described above, the depth thickness is thin (height Z in FIG. 7), unlike the two-stage air cleaning device including the charging device and the dust collecting device. Can be configured to have a very low pressure loss. In the discharge device 1000, the pressure loss is about 1 Pa when the passing wind speed is 1 m / s. This pressure drop is about 1/10 of a medium performance filter and a low pressure drop of about 1/30 of a HEPA filter.

(Effect of discharge device 1000: space saving and pressure loss)
The air conditioner 3000 illustrated in FIG. 3 includes a suction port 3061, a blowout port 3062, a heat exchanger 3060, and a blower fan 3063. The air conditioner 3000 is equipped with a cross flow fan as the blower fan 3063. Like the air conditioner 3000, an air conditioner equipped with a blower fan 3063, particularly a cross flow fan, is vulnerable to pressure loss. Therefore, the configuration in which the discharge device 1000 is installed on the upstream side of the heat exchanger 3060 and on the downstream side of the coarse air conditioner pre-filter 3064 installed on the suction port 3061 side improves the pressure loss. This is preferable in terms of points. The arrows in FIG. 3 indicate the air flow. By installing the discharge device 1000 between the suction port 3061 and the heat exchanger 3060, airborne viruses and airborne bacteria are inactivated without greatly impairing the aerodynamic performance of the air conditioner 3000, and the air is discharged from the outlet 3062. Air can be blown out.

(Effect of discharge device 1000: upstream arrangement of heat exchanger 3060)
Further, even if only a charging device such as the discharge device 1000 is used, dust can be charged and adsorbed to a heat exchanger 3060 that is provided in the downstream and is grounded. Moreover, since the discharge device 1000 is placed upstream of the heat exchanger 3060, it is not affected by the air having a high relative humidity after passing through the heat exchanger 3060, so that abnormal discharge does not occur due to water. So it is safe. In addition, the clogging between the high voltage and low voltage electrodes due to large dust is less likely to occur due to the downstream of the prefilter 100.

(Support 1500)
When the discharge device 1000 is installed in the air conditioner 3000, the discharge device 1000 is installed in a support unit 1500 provided on the upstream side of the heat exchanger 3060, as shown in FIGS. The support unit 1500 houses a high-voltage board 1530, a support-side high-voltage terminal 1570 connected to the high-voltage board 1530, and a support-side low-voltage terminal 1560 connected to the high-voltage board 1530. The discharge device 1000 is installed in the support unit 1500 via a support side high voltage terminal 1570 and a support side low voltage terminal 1560. In addition, hooking portions 1514 are provided at a plurality of locations on the back side of the support portion 1500. The support portion 1500 is fixed to the heat exchanger 3060 by applying or hooking the hook portion 1514 to a pipe provided in the refrigerant pipe (not shown).

(Relationship between support unit 1500 and panel 3070)
As shown in FIG. 5, the support portion 1500 has a screwing portion 1522 at the right end portion, and is fixed to a screw fixing portion provided at the right end of the heat exchanger 3060 with a screw. Further, at the left end portion of the support portion 1500, there is a panel contact portion 1518 located in the approximate center of the air conditioner 3000 (FIG. 2). On the back side of the panel 3070 (FIG. 1) that covers the heat exchanger 3060, a recess 3071 (not shown) that matches the shape of the panel contact portion 1518 was formed on the surface facing the heat exchanger 3060. And the panel recessed part 3071 is made to contact the panel contact part 1518, and the left end of the support part 1500 is fixed so that it may not float in the height direction with the recessed part 3071 formed in the panel 3070. Accordingly, the right end of the support portion 1500 is screwed to the right end of the heat exchanger 3060, and the left end is fixed by the recessed portion 3071. Therefore, when the discharge device 1000 is removed from the support unit 1500, the support unit 1500 is not detached from the heat exchanger 060. Further, since both sides of the support portion 1500 are fixed, the discharge device 1000 can be easily pulled out from the support portion 1500. Pressure loss is reduced by providing a rectangular opening 1519 between the installation portion of the discharge device 1000 of the support portion 1500 and the panel contact portion 1518. The upper rib 1520 and the lower rib 1521 that form the opening 1519 are inclined obliquely with respect to the lower frame 800, and are inclined substantially parallel to the direction of airflow from the suction port. Moreover, it inclines substantially parallel to the top and bottom direction. With such a configuration, the pressure loss of the upper and lower ribs can also be reduced.

(The handle 211 of the upper frame 200)
As shown in FIG. 4, the upper frame 200 is provided with a handle portion 211 for holding the discharge device 1000 by hand and removing it from the support portion 1500. The handle portion 211 is formed in a U shape at the lower end portion of the upper frame 200. In addition, the handle portion 211 provided in the discharge device 1000 is not provided with a grid so that it can be easily grasped, the hand can easily enter, and even a person with a large hand can enter the hand. However, by not providing the handle 211 with a grid, in the air conditioner 3000 equipped with the discharge device 1000, the hand may touch the heat exchanger 3060 at the rear of the discharge device 1000, which may cause injury. . Therefore, a grid portion 1512 provided with a plurality of vertical grids is provided on the support portion 1500 side where the discharge device 1000 is installed. By doing so, the heat exchanger 3060 does not injure the hand. Moreover, since the part provided with the grating | lattice is low compared with the case where the grating | lattice is provided in the handle part 211 (because it is near the heat exchanger side), it is easy to put a hand into the back and to attach and detach. Further, by arranging the grid of the grid portion 1512 slightly lower than the height of the lower end portion of the support portion 1500 (by placing it close to the heat exchanger), there is an effect that the hand can further enter and attach and detach easily.

(Hook 1514)
On the back side of the lattice portion 1512 of the support portion 1500, hook portions 1514 (two places shown in FIG. 5) formed integrally with the lattice portion 1512 are provided. By applying or hooking the hook portion 1514 to a pipe provided in the refrigerant pipe, it becomes a mark at the time of assembly, and the assembly becomes easy. In particular, since the hooking portion 1514 is provided on the back of the lattice portion 1512 located on the lower side of the support portion 1500, it is easy to see at the time of assembly, and the upper portion from the front of the bent portion located at the lower end of the heat exchanger 3060 on the upper front surface. The support portion 1500 can be easily attached in order toward the upper side of the heat exchanger 3060. Further, since the lower portion of the support portion 1500 is fixed when the discharge device 1000 is pulled out from the support portion 1500, the lower portion of the support portion 1500 does not float and the discharge device 1000 can be easily attached and detached. When the hook 1515 is applied to or hooked on the lowermost pipe of the heat exchanger 3060 at the upper front, it is easy to assemble.

(Pre-filter 100, lower frame 800)
The pre-filter 100 (FIG. 4) in which a net is insert-molded into a resin frame prevents inflow of coarse dirt into the discharge device 1000 with roughly 30 coarse nets per inch. The upper frame 200 has a plurality of lattices that do not allow fingers to enter, and prevents the user from touching the discharge electrode 300 and the counter electrode 700 from above while allowing air to pass. The lower frame 800 is also provided with a plurality of lattices that do not allow fingers to enter and allows air to pass through. The lower frame 800 is provided with a lower rib 844 (FIG. 17). As shown in FIG. 4, the counter electrode 700 is installed on the lower frame 800, and the lower frame 800 holds the counter electrode 700. The lower frame 800 is formed with ribs (FIG. 17) of the low voltage terminal holding portion 840 (FIG. 16) and the high voltage terminal holding portion 841 (FIG. 16), and the high voltage side power supply terminal 709 and the low voltage side connection portion. 710 is held.

(Right middle frame 500, Left middle frame 600)
As shown in FIG. 4, a right intermediate frame 500 and a left intermediate frame 600 are provided between the upper frame 200 and the lower frame 800. The right intermediate frame 500 and the left intermediate frame 600 are fixed by pressing a connecting portion 733 (FIG. 4, which will be described later) of the counter electrode 700 installed on the lower frame 800 from above. In the following, when referring to both intermediate frames, they are simply described as intermediate frames, and when distinguished, they are described separately as right intermediate frame 500 and left intermediate frame 600, respectively. The intermediate frame is provided with a turn-back portion 680 (FIG. 4, which will be described later) for turning back the wire-like discharge electrode 300, and the wire-like discharge electrode 300 is hooked and turned 180 degrees.

  FIG. 6 is a top view of the discharge device 1000. Moreover, FIG. 7 shows the AA cross section of FIG. The counter electrode 700 is disposed in parallel to the discharge electrode 300 so as to face the discharge electrode 300 and maintain a predetermined distance. The high voltage side power supply terminal 709 is fixed to a rib (high voltage terminal holding portion 841, FIG. 16) provided in the lower frame 800. The high-voltage side power supply terminal 709 has a contact portion with one high-voltage power supply side and two spring fixing portions. The high voltage side power supply terminal 709 is made of stainless steel having a thickness of about 0.5 t, and the end of the spring 400 is hooked on a hook portion 709a (FIG. 4) cut out in a V shape (FIG. 6). The high voltage side power supply terminal 709 (FIG. 4) is pressed and fixed to the lower frame 800 side by the back surface of the intermediate frame. The hook portion 709a is exposed in the height direction of the discharge device 1000 from the cutout portion of the intermediate frame.

  The discharge electrode 300 shown in FIGS. 4 and 21 is a wire (linear body) having a circular or rectangular (rectangular) cross section. As shown in FIG. 21, the discharge electrode 300 includes a terminal 301, a tube 302, and a wire 303. As shown in FIG. 21, the terminal 301 and the tube 302 are provided at both ends of the wire 303. In the discharge electrode 300, as shown in FIGS. 6 and 14, the wire 303 is folded at the folded portion 680 (FIG. 14) of the intermediate frame, and the terminals 301 at both ends are respectively connected to the high voltage side via springs 400 as shown in FIG. It is attached to the hook portion 709 a of the power supply terminal 709. A high voltage line from the high voltage substrate 1530 is connected to each terminal 301 of the discharge electrode 300 via a high voltage side power supply terminal 709. As shown in FIG. 6, the wires 303 form a plurality of rows in the left-right direction of the discharge device 1000 by folding. FIG. 6 shows four rows. The material of the discharge electrode 300 is a metal such as tungsten, copper, nickel, stainless steel, zinc, iron, molybdenum, or an alloy containing these metals as a main component, or a noble metal such as silver, gold, or platinum. It is formed using a material plated on the surface.

(End of discharge electrode 300)
As described above, the ring-shaped terminal 301 for hooking on the spring 400 is attached to the end of the discharge electrode 300 (FIGS. 6 and 21), and the spring 400 is tensioned and does not hang down. As shown in FIG. 21, the terminal 301 is formed by a caulking method in which pressure is applied after the wire 303 of the discharge electrode 300 is sandwiched between the terminals 301 or spot welding in which the terminal 301 is melted by an applied current. 303 or joined. Furthermore, as shown in FIGS. 6 and 14, the discharge electrode 300 is folded back once through the left intermediate frame 600 or the right intermediate frame 500 about once for every additional line. It is attached and supported by the folded portion 680 of the left intermediate frame 600 and the right intermediate frame 500 when folded.

  Since the material of the wire 303 of the discharge electrode 300 has a high tensile strength, tungsten (element symbol: W) is often used in the same manner as the filament of the bulb. Further, stainless steel is often used as the material of the terminal 301 because of its versatility. Among them, the most general-purpose SUS304 is often used as a material. The wire 303 and the terminal 301 are fixed so as not to be cut even if they are pulled by a spring or the like by a caulking method or spot welding. However, since the potential difference between tungsten and SUS304 is +0.36 volts or more, different metal contact corrosion may occur when a high humidity environment or a specific acceleration factor is added. In this combination of materials, the tungsten side has a low potential (minus potential), so when dissimilar metal contact corrosion occurs, the tungsten side forms an oxide such as WO4 (2-) and dissolves. The function is lost due to disconnection. Moreover, since the solubility of WO4 (2-) is very large, it dissolves in the moisture adhering to the surface of the wire 303, increasing the ionic current on the surface of the wire 303 (increasing the conductivity), Accelerate corrosion.

  Therefore, in the discharge electrode 300 of the present embodiment, the material of the terminal 301 is tin (element symbol: Sn), nickel (element symbol: Ni), or the surface of the terminal 301 made of stainless steel is tin-plated, Nickel-plated one was used. By doing so, the potential difference between the dissimilar metals of tungsten and the terminal 301 is reduced from +0.36 volts to −0.11 volts when tin or tin plating is used for the terminal 301. When nickel or nickel plating is used for the terminal 301, the voltage is reduced to -0.01 volts. In either case, the potential difference is very small and the corrosion is extremely difficult to occur. Further, since the terminal 301 side has a low potential (negative potential), the terminal 301 becomes a sacrificial electrode, and corrosion does not proceed on the tungsten side. Since tin and nickel oxides have low water solubility, corrosion is not promoted even in the presence of environmental factors or moisture. By combining the wire 303 with tungsten and the terminal 301 with tin, nickel, tin-plated metal, or nickel-plated metal, the probability of disconnection can be reduced, and the discharge electrode 300 can be used with confidence over a long period of time.

  Furthermore, in the discharge electrode 300 of the present embodiment, as shown in FIG. 21, the entire bonded portion of tungsten and the terminal 301 is covered and covered with a tube 302 using an internally bonded tube. The inner surface-bonded tube has a two-sided structure of an outer layer and an inner layer. For example, the outer layer is made of a soft polyolefin resin or the like, and the inner layer has a heat-welding adhesive layer. It is desirable not to use a material mixed with an ionic component such as vinyl chloride from the viewpoint of suppressing the ionic current. Further, it can be tightly fixed by using a heat shrinkable material that shrinks 60% or more at 100 ° C. The tube 302 was fixed by applying heat at a position covering the junction between the tungsten and the terminal 301. By making the length of the tube 302 longer than the joint portion between the tungsten and the terminal 301, the joint portion can be reliably covered with the tube 302.

  By using an adhesive mixed with a waterproof component such as silicon or epoxy for the inner layer of the tube 302, it is possible to prevent moisture from entering, which is an acceleration factor such as corrosion. By using an adhesive for the inner layer, even if the wire 303 starts to corrode and deviates from the terminal 301, the position of the wire 303 does not shift and the wire 303 is disconnected for a long time without disconnection and separation. Can be held in a prescribed position.

  In addition, by covering the terminal 301 with the tube 302, it is easy to hold the tube 302 and assemble the wire 303 to the apparatus during assembly. Further, in the vicinity of the terminal 301 connected by caulking or spotting, the bending strength of the wire 303 is low, and there is a risk of cutting by bending or twisting in an arbitrary direction. By covering the terminal 301 with the tube 302, the bending strength is improved and the wire 303 is not cut even if it is bent several times in an arbitrary direction.

  When the tube 302 is not an inner surface adhesive type, there is no waterproofing effect, but an improvement in bending strength is expected. In this case, similarly, using the heat shrink material, the terminal 301 side having a sufficiently larger width than the wire 303 is fixed to the tube 302 by heat shrink. Although both sides may be heat-shrinked, the wire 303 side is not heat-shrinked, so that one side does not become a fixed end and an effect of improving the bending strength is easily obtained.

  As described above, tungsten is used for the wire 303, tin, nickel, tin-plated metal, or nickel-plated metal is used for the terminal 301, and the terminal 301 is covered with the tube 302. With this configuration, the probability of disconnection of the discharge electrode 300 can be reduced, and the discharge electrode 300 can be used with confidence over a long period of time.

(Material of counter electrode 700)
The material of the counter electrode 700 is formed using a metal such as stainless steel. Alternatively, a conductive resin containing carbon or the like and having a resistance value lowered to about 10 ⁴ Ω / cm may be used. The counter electrode 700 is connected by welding, caulking, or the like, or connected to a ground line (GND) via a low-voltage side connection portion 710 (FIG. 4) formed integrally. The counter electrode 700 may include a plurality of separately prepared flat plates arranged in parallel and connected to a metal plate or the like. However, a large number of fixing portions are required and assembly takes time. For this reason, the counter electrode 700 is preferably composed of one part (one member) when it is desired to make the counter electrode 700 thin and compact, or when it is desired to make the counter electrode 700 inexpensively with high mass productivity. The conductive resin is preferably made of metal (a single metal plate) because it has a problem of poor grounding and a problem of cost.

(Configuration of counter electrode 700)
As shown in FIG. 8, the counter electrode 700 includes a flat plate portion 731, a band portion 732, and a connection portion 733. As shown in FIG. 8, the flat plate portion 731 is a portion surrounded by a broken line 999, the band portion 732 is a portion surrounded by a broken line 998, and the connection portion 733 is a portion surrounded by a broken line 997. The band portion 732 is described in order to clarify the difference from the counter electrode in FIG. 10 (described later), but is substantially a part of the flat plate portion 731. As illustrated in FIG. 8, the counter electrode 700 includes a connection portion 733 that connects a plurality of flat plate portions 731 in the vertical direction on both sides of the flat plate portion 731 in the left-right direction. In other words, the flat plate portion 731 has a longitudinal shape and a flat plate shape arranged substantially in parallel. The connection portion 733 includes a first connection portion 733R that connects one end portions in the longitudinal shape of the plurality of flat plate portions, and a second connection portion 733L that connects the other end portions in the longitudinal shape of the plurality of flat plate portions. . The first connection portion 733R and the second connection portion 733L are collectively referred to as a connection portion 733.

  The first connection portion 733R protrudes in the longitudinal direction from the lower side of one end portion of each flat plate portion 731 in the longitudinal direction, and between the adjacent flat plate portions 731 between the first protrusion portions 735 for each flat plate portion 731. Adjacent flat plate portions 731 connected to the lower end of the first protruding portion 735 in the adjacent flat plate portion 731 from the upper end of the first protruding portion 735 on the near side in the alignment direction 742 (FIG. 8) in which a plurality of flat plate portions are sequentially arranged. A first connection piece 707 for each. Similarly to the first connection portion 733R, the second connection portion 733L also includes a second protrusion 736 and a second connection piece 708.

  As shown in FIG. 12B, at least one first connection piece 707 protrudes downward from the upper end of the first protrusion 735 and is connected to the lower end of the adjacent first protrusion 735. The bent portion 741 is formed. Similarly, at least one second connection piece 708 also has a bent portion 741 that protrudes downward. FIG. 12A shows a case where the bent portion 741 is not provided. As shown in FIG. 12B with respect to FIG. 12A, the abnormal discharge and unnecessary discharge between the discharge electrode 300 and the connection portion 733 are achieved by increasing the distance between the discharge electrode 300 and the connection portion 733. Thus, a stable discharge and electric field can be formed. In addition, although the structure of FIG.12 (b) is preferable, it can be used also for Fig.12 (a).

  As shown in FIG. 12B, the connection part 733 of the counter electrode 700 has an upper bent part 751 that is convex on the upper frame 200 side (upper side) and a bent part 741 that is convex on the lower side in the cross section. Have

  In the configuration in which the conventional flat plate portion 931 (corresponding to the flat plate portion 731) is raised from a large plate as shown in FIG. 10, it is the remaining portion obtained by cutting the flat plate portion 931 from the metal plate, and in the vertical direction with the flat plate portion 931. There is a band 932 (FIG. 11) that is connected and connected in a horizontal direction to the connecting portion 933 (corresponding to the connecting portion 733).

  Since the conventional belt | band | zone part 932 becomes a wall with respect to the inflow angle of a wind like FIG. 11, a big pressure loss will arise and it will increase the power consumption of an air conditioner. From the viewpoint of reducing pressure loss, it is preferable that the band portion 932 be absent. However, when the counter electrode 700 is formed with one part (one metal plate), there is a problem in that a belt portion 932 is generated due to manufacturing. Therefore, in the present application, the shapes shown in FIGS.

(Counter electrode 700)
In addition, in the discharge device 1000, the flat plate portion 731 of the counter electrode 700 is inclined with respect to the surface of the lower frame 800 by an angle θ in consideration of the wind inflow direction in order to reduce the pressure loss of the flat plate portion 731. Formed (FIG. 7). By inclining the flat plate portion 731 with a certain angle θ with respect to the opening surfaces of the upper frame 200 and the lower frame 800, the inclination of the flat plate portion 731 of the counter electrode 700 attached to the lower frame 800 inhibits the flowing wind. do not do. It is most desirable that the angle θ of the flat plate portion 731 of the counter electrode 700 is parallel (θ (w) = θ) with respect to the wind inflow angle θ (w). By setting the difference in angle θ of the flat plate portion 731 of the counter electrode 700 to 0 ° (parallel) or more and 30 ° or less with respect to the wind inflow angle θ (w), the influence of pressure loss can be ignored. be able to. Conversely, if the angle θ of the flat plate portion 731 is greater than 30 ° with respect to the wind inflow angle θ (w), the power consumption of the air conditioner 3000 is clearly increased. Specifically, it may be considered that the effect is small if the increase in power consumption due to the inhibition of the wind flow when the product is mounted can be suppressed to 1 W or less when the maximum air volume is exhibited.

(Shape of discharge electrode 300)
When the wire cross section is circular, the discharge electrode 300 has a cross-sectional diameter of about 0.05 to 0.10 mm. When a high voltage is applied to the discharge electrode 300, a discharge and an electric field are generated radially in a 360 degree direction when the local electric field strength exceeds 10 kV / cm. As the diameter of the wire 303 is smaller, the electric field strength is increased and discharge and electric field are easily generated. However, since the cross-sectional area is smaller, there is a possibility that the tensile strength is weakened and is easily cut.

(When the wire 303 has a rectangular cross section)
On the other hand, when using the rectangular shaped discharge electrode 300 whose wire cross section consists of a long side and a short side, the long side is 0.1 to 1.0 mm and the short side is 0.01 to 0.2 mm. In the case of the wire 303 having a rectangular cross section, since the short side is shorter than the long side, the electric field is concentrated on the short side, and most of the discharge is generated near the short side. Since the short side is two places, discharge occurs from two places.

(Long side / short side ratio of wire 303)
The ratio of long side to short side (long side / short side) is about 1 to 10. By increasing this ratio, the cross-sectional area can be increased while the short side is small (discharging is easy), so that the tensile strength is increased and the cutting is difficult to be performed while maintaining the discharge. Have. Also, by increasing this ratio, the short side can be kept small (it is easy to discharge) and the cross-sectional area can be made large. The effect that the average electric field strength from 300 to the counter electrode 700 increases is obtained. Therefore, the inactivation effect of airborne viruses and airborne bacteria when passing through the electric field space is enhanced.

  The arrangement of the wire 303 of the discharge electrode 300 with respect to the counter electrode 700 is as follows. As shown in FIG. 12B, the long side of the rectangle is perpendicular to the lower frame 800 (the Z direction in FIG. 12B), and the short side is horizontal to the lower frame 800 (the x direction in FIG. 12B). The wire 303 is arranged so that That is, the flat plate portion 731 is formed to be inclined with respect to the lower frame 800 by an angle θ, but the discharge electrode 300 is not installed obliquely with respect to the lower frame 800 and is installed substantially vertically (in parallel).

  The flat plate portion is inclined at a predetermined angle θ with respect to a virtual reference plane 752 (FIG. 7) orthogonal to a virtual plane whose normal direction is the alignment direction 742. Then, as shown in FIG. 12B, the discharge electrode wire 303 is arranged such that the short side of the rectangle is substantially parallel to the virtual reference plane 752. Such an arrangement of the wires 303 makes it difficult to cut the wires 303 and increases the electric field strength.

(Dimension of wire 303)
Moreover, the one where the cross-sectional area of the wire 303 is larger is easier to hold the wire of the discharge electrode 300 by hand, and is easier when pulling or bending is assembled. Specifically, if the long side / short side is set to 3 or more, the long side is set to 0.2 mm or more, the short side is set to 0.03 mm or more, and the cross-sectional area is set to 0.01 mm ² or more, it is difficult to cut. It is easy to obtain an effect that a discharge is easily generated at the short side 2b. When the long side / short side is 6 or more, the long side is 0.3 mm or more, the short side is 0.04 mm or more, and the cross-sectional area is 0.015 mm ² or more, compared with a discharge electrode having a circular cross section in the past. Obviously, it is difficult to cut, easy to assemble, and an effect that discharge is easily generated at the short side 2b is obtained. At this time, unless the short side is set to 0.1 mm or less, the electric field does not concentrate on the short side. Therefore, the short side is preferably 0.04 mm or more and 0.1 mm or less. If the long side is not 0.6 mm or less, the electric field is not concentrated on the short side, and a large voltage of 7 kV or more is required to obtain the same discharge current. Therefore, the long side should be 0.3 mm or more and 0.6 mm or less. preferable. Under such conditions, discharge can be performed at 6 kV or less, and a high-voltage power supply can be configured at low cost. Radius of conventional general circular cross-section of the discharge electrodes is 0.1 mm, the cross-sectional area so 0.0076 mm ^2, plate-like discharge electrodes described above holds the cross-sectional area of about 2-fold. Accordingly, the tensile strength is increased and disconnection is difficult.

  Furthermore, when the cross-sectional area of the rectangular cross section is made larger than the circular cross section, the amount of charge increases at the same voltage, and the average electric field strength in the space increases by 20% to 40%, resulting in an inactivation effect on viruses and fungi. Rise.

  In addition, the conventional circular cross-section wire electrode is eroded from the entire surrounding surface due to deterioration due to discharge, dust, moisture, and environmental factors. However, by setting the long side / short side to 3 or more, erosion progresses from the vicinity of the short side where the stress acts and the discharge concentrates. Even if the erosion progresses from the short side, the erosion does not advance from the long side. Therefore, the environment resistance is high and can be used stably over a long period of time.

(Corner R of wire 303)
A corner R1 which is a corner of the discharge electrode 300, that is, a corner R of which the short side and the long side intersect,
The radius is 0.001 mm to 0.1 mm.
That means
0.001mm ≦ R1 ≦ 0.1mm
It is. In addition, since the electric field concentrates on the shorter side when R1 is smaller, R1 is preferably within 0.01 mm.
That means
0.001mm ≦ R1 ≦ 0.01mm
Is preferred.

(Upper rib 201 of upper frame 200, lower rib 844 of lower frame 800)
FIG. 7 shows a detailed view of the counter electrode 700 when the flat plate portion 731 of the counter electrode 700 is inclined at an angle θ with respect to the surface of the lower frame 800. A method for reducing pressure loss and a fixing method in this case will be described. FIG. 23 is a diagram illustrating a relationship between the flat plate portion 731 of the counter electrode 700 and the upper rib 201 and the lower rib 844. The upper frame 200 includes an upper rib 201 (not shown) that is integrally attached to the upper frame 200 and supports the counter electrode 700. The upper rib 201 extends vertically from the upper frame 200 downward from the upper frame 200 in the height direction. The lower frame 800 is formed with lower ribs 844 (FIGS. 16 and 17) that are integrally attached to the lower frame 800 and support the counter electrode 700. The lower rib 844 extends vertically from the lower frame 800 upward in the height direction from the lower frame 800.

  In addition, the lower frame 800 positioned below the connection portion 733 of the counter electrode 700 is formed with a shape corresponding to the bent shape (lower holding portion 801, FIG. 4) that is substantially the same as the bent shape of the connection portion 733. ing. Specifically, the lower frame 800 is formed with a lower holding portion 801 (FIG. 4) having a shape corresponding to the shape of the connection portion 733 (first connection portion 733R, second connection portion 733L). The part 733 (first connection part 733R, second connection part 733R) is supported by the lower holding part 801 from the lower side.

(How to hold the flat plate portion 731)
As described above, the flat plate portion 731 of the counter electrode 700 is disposed at a predetermined angle θ with respect to the surface of the lower frame 800 (FIG. 7). As shown in FIG. 23, the flat plate portion 731 is sandwiched and fixed by two ribs, that is, an upper rib 201 of the upper frame 200 and a lower rib 844 of the lower frame 800. FIG. 23 is a diagram illustrating a relationship between the flat plate portion 731, the upper rib 201, and the lower rib 844, for example, on the arrow Y in FIG. 17. Although the upper rib 201 is not specifically shown except for FIG. Accordingly, even when the angle θ of the flat plate portion 731 with respect to the lower frame 800 is shifted due to a molding error or contact during assembly, the flat plate portion 731 can be corrected to the “predetermined angle θ”. it can. In addition, there is an effect that the angle does not sag over time. In the counter electrode 700, a flat plate portion 731, a band portion 732, and a connection portion 733 are installed on the lower frame 800. At this time, the connection portions 733 (FIG. 8) at both left and right ends are brought into good contact with the lower frame 800 and are pressed by the right intermediate frame 500 and the left intermediate frame 600 from above. Since the lower rib 844 (FIGS. 16 and 17) is provided on the lattice (FIG. 17) provided in the lower frame 800, there is no pressure loss.

(Shape of counter electrode 700)
As shown in FIG. 8, the counter electrode 700 is bent at a connection portion 733 located at the same height as the flat plate portion 731 or below the flat plate portion 731 in the height direction to cut and raise the flat plate portion 731. The uppermost flat plate portion 731 was bent in a direction from the upper portion in the vertical direction toward the lower portion, and the flat plate portion 731 in the lowermost portion in the vertical direction was bent in a direction from the lower portion in the vertical direction toward the upper portion. By doing so, the band portion 732 is eliminated at both ends in the vertical direction, and the pressure loss is reduced. Accordingly, the aerodynamic performance is improved and the power consumption of the indoor fan is reduced.

(Counter electrode 700: even number)
When the number of the flat plate portions 731 is an even number, a flat plate that is bent in the direction from the upper part in the vertical direction to the lower part and a flat plate that is bent in the direction from the lower part in the vertical direction to the upper part are taken as a pair, and a plurality of pairs are connected to the connection part 733. Connect and form. When formed in this way, the band portion 732 is eliminated at both ends in the vertical direction, and the pressure loss is reduced. Accordingly, the aerodynamic performance is improved and the power consumption of the indoor fan is reduced.

(Counter electrode 700: odd number)
On the other hand, when the number of the flat plate portions 731 is an odd number, a pair of flat plates that are bent in the direction from the upper portion in the vertical direction to the lower portion and flat plates that are bent in the direction from the lower portion in the vertical direction to the upper portion are used as a pair. The flat plate portion 731 at the uppermost portion in the vertical direction is formed as a pair that does not form a pair, and is bent in the direction from the upper portion to the lower portion in the vertical direction, or at the lowermost portion in the vertical direction. The flat plate portion 731 is folded in the direction from the lower part in the vertical direction toward the upper part as one sheet that does not form a pair. By forming in this way, the band portion 732 is eliminated at both ends in the vertical direction, and the pressure loss is reduced. Accordingly, the aerodynamic performance is improved and the power consumption of the indoor fan is reduced.

(Counter electrode 700)
When the plate portion 731 is bent in the middle of the flat plate portion 731 without being bent at the connection portion 733 positioned at the same height as the flat plate portion 731 or below the flat plate portion 731 in the height direction, the band portion 732 is bent. Will occur. In addition, when the flat plate portion 731 at the uppermost portion in the vertical direction is not bent in the direction from the upper portion in the vertical direction to the lower portion, the flat plate portion 731 at the lowermost portion in the vertical direction is not bent in the direction from the lower portion in the vertical direction to the upper portion. Also in this case, since the band portion 732 is generated, the pressure loss increases, and the length dimension in the vertical direction increases by the amount of the band portion 732, so that the space property is deteriorated. Further, if the flat plate portion 731 is divided into a plurality of parts without being connected, the production cost increases.

(Counter electrode 700)
The counter electrode 700 is installed and held on the lower frame 800, but the counter electrode 700 is formed on the lower surface of the frame (intermediate frame or upper frame 200) located above the counter electrode 700 from above in the height direction. By pressing, the counter electrode 700 can be fixed without moving up and down. At this time, the intermediate frame or the upper frame 200 presses the vicinity of both ends in the left-right direction of the counter electrode 700 so that the intermediate frame or the upper frame 200 itself does not block the passage of the wind.

  As shown in FIG. 4, the right intermediate frame 500 and the left intermediate frame 600 shown in FIG. 13 are covered and insulated so that the connection portions 733 (first connection portion 733R and second connection portion 733L) of the counter electrode 700 are not exposed. To do. The connection part 733 is installed on the lower frame 800.

  Similarly to the lower frame 800, the right intermediate frame 500 and the left intermediate frame 600 positioned above the connection portion 733 of the counter electrode 700 correspond to the shape of the connection portion 733 (first connection portion 733R, second connection portion 733L). The upper holding portions 501 and 601 (FIG. 4) having the shape to be formed are formed, and the connection portions 733 (first connection portion 733R and second connection portion 733L) of the counter electrode 700 are held from the upper side as shown in FIG. It is held by the parts 501 and 601. In this way, the bent shape of the connecting portion 733 is sandwiched and fixed between the right intermediate frame 500, the left intermediate frame 600, and the lower frame 800.

(1) By fixing the connection portion 733 in this way, it is possible to prevent a shift in the angle of the flat plate portion 731 and the aging of the flat plate portion 731 and forcibly fix the angle of the flat plate portion 731. Therefore, a stable discharge and electric field can be formed while keeping the distance between the discharge electrode 300 and the flat plate portion 731 of the counter electrode 700 constant.
(2) Further, since the connection portion 733 of the counter electrode 700 is covered with the intermediate frame to insulate between the discharge electrode 300 and the connection portion 733, the discharge electrode 300 and the connection portion 733 covered with the intermediate frame are used. Even if the distance is short, unnecessary discharge does not occur. Thus, since the distance between the discharge electrode 300 and the counter electrode 700 can be shortened by covering the connection portion 733 with the intermediate frame, the thickness of the entire discharge device 1000 can be reduced.
In addition, since unnecessary discharge between the discharge electrode 300 and the connection portion 733 is suppressed, a stable discharge field and electric field can be formed. Further, since the connection portion 733 and the intermediate frame that is the holding portion of the discharge electrode 300 are overlapped and installed at the end portion of the apparatus, the opening area in the width direction can be increased.

  In the lower frame 800, a high voltage side power supply terminal 709 (high voltage power supply unit) that supplies power to the discharge electrode 300 is disposed in the high voltage terminal holding unit 841 (FIG. 17). As shown in FIG. 4, the right intermediate frame 500 is configured to cover at least a part of the high-voltage power supply terminal 709. The high voltage terminal holding portion 841 may be provided on the side covered with the left intermediate frame 600 and cover the high voltage side power supply terminal 709 with the left intermediate frame 600.

  As shown in FIGS. 13 and 18, an insulating wall 505 that stands vertically from the bottom surface of the right intermediate frame 500 is formed on the side surface of the right intermediate frame 500 on the center side (left intermediate frame 600 side).

(Notches 506, 606)
That is, the right intermediate frame 500 stands upward along the ends of the plurality of flat plate portions 731 arranged substantially in parallel and has an insulating wall 505 made of an insulating material in which a notch 506 is formed to pass the discharge electrode 300. Have Similarly, the left intermediate frame 600 has an insulating wall 605 and a notch 606 (FIG. 14). Thus, by providing the insulating wall in the intermediate frame, the spatial distance between the discharge electrode 300 and the connection portion 733 and the edge surface distance can be increased. Therefore, unnecessary discharge can be prevented, so that the device can be thinned. The notch 506 and the notch 606 that pass through the discharge electrode 300 provided in each of the right intermediate frame 500 and the left intermediate frame 600 are U-shaped or V-shaped to allow the discharge electrode 300 to pass through. As shown in FIG. 13, the upper part is open and the lower part is closed. FIG. 13 shows the case of a V-shaped notch. In the case of a U-shape, the widths of the notches 506 and 606 are substantially the same from the top to the bottom. In the case of the V shape, the width of the notch is gradually narrowed from the upper part (upper frame direction) to the lower part (lower frame direction). By doing in this way, when assembling, the discharge electrode 300 is not caught on the insulating wall at a position higher than a predetermined height. In addition, the opening is used as a guide and assembly becomes easy, and the insulating walls 505 and 605 can reliably prevent abnormal discharge with the counter electrode 700.

  As shown in FIG. 13, the right intermediate frame 500 (first upper frame) and the left intermediate frame 600 (second upper frame) are in directions away from the insulating walls 505 and 605, respectively, and the flat plate portion 731. End portions in the longitudinal direction are flat portions 508 and 608 which are flat. That is, the right end portion of the right intermediate frame 500 and the left end portion of the left intermediate frame 600 are flat flat portions 508 and 608 (FIG. 13). In this way, by flattening the right end portion of the right intermediate frame 500 and the left end portion of the left intermediate frame 600, when performing assembly work for passing the discharge electrode 300 (mainly the wire 303) through the intermediate frame, Assembling work such as inserting a terminal into the power feeding portion is facilitated without being obstructed by the rib. As shown in FIG. 13, the heights of the flat portions 508 and 608 at the right end of the right intermediate frame 500 and the left end of the left intermediate frame 600 are higher than the height of the wire 303 of the discharge electrode stretched on the apparatus. Low (FIGS. 14 and 18). In this way, when the work of holding the discharge electrode 300 by grasping with a finger is performed, the intermediate frame does not get in the way of the hand, so that the assembly work is facilitated. Moreover, the height of the right side edge part and left side edge part of the lower frame 800 is also lower than the height of the wire 303 in a state of being stretched on the apparatus. By doing so, the lower frame 800 does not get in the way of the hand when the operation of holding the discharge electrode 300 by grasping with a finger is performed, so that the assembling work is facilitated. Since the intermediate frame is fitted and fixed to claws 851 to 854 (FIGS. 16 and 17) provided at the right end and the left end of the lower frame 800, the height of the end of the intermediate frame is set to the lower frame. Lower than 800 edge height. Since the lateral frame of the device cannot be created with the lower frame 800, the lateral frame of the device is formed by the upper frame 200 (side surfaces 207 and 208 of the upper frame 200 shown in FIG. 25 (described later)), and the discharge electrode 300 is stretched. After that, the upper frame 200 is finally fitted into the lower frame 800 from above and fixed.

(Extension part 507)
In the right intermediate frame 500, as shown in FIGS. 18 and 19, the insulating wall 505 is provided with an extending portion 507 that protrudes from the lower portion of the connecting portion 733 toward the lower frame 800. As shown in FIGS. 18 and 19, the extending portion 507 extends from the base of the insulating wall 505 in the direction of the lower frame 800, and together with the lower frame convex portion 846 of the lower frame 800, the connecting portion 733 extends from the discharge electrode 300. Isolate. A similar extending portion 607 is formed on the left intermediate frame 600, and a lower frame convex portion 846 is also formed on the left intermediate frame 600 side. Thus, by extending the insulating walls 505 and 605 and providing the extending portions 507 and 607, the spatial distance and the creeping distance between the discharge electrode 300 and the flat plate portion 731 can be increased. Therefore, unnecessary discharge can be prevented more reliably and the apparatus can be made thinner.

  FIG. 20 shows a configuration in which unnecessary discharge can be prevented and the apparatus can be thinned by increasing the spatial distance and creepage distance between the low-voltage side connection portion 710 and the high-voltage side power supply terminal 709. Although the function is the same as that of the above-described extension portion 507, as shown in FIG. 20, the lower frame 800 is provided with a lower frame convex portion 847, and the right intermediate frame 500 is provided with an intermediate frame convex portion 547. By combining the lower frame convex portion 847 and the intermediate frame convex portion 547 which are insulating materials, the low voltage side connection portion 710 and the high voltage side power supply terminal 709 can be insulated, and the spatial distance and creepage distance between them can be increased. .

(Folding part 680)
As shown in FIG. 14, the left intermediate frame 600 has a folded portion 680 where the discharge electrode 300 (wire 303) is folded. In the folded-back portion 680, a standing portion 681 that rises upward and has a substantially U-shaped horizontal cross section faces the left side (X direction and direction outside the apparatus). The start and end regions 683 of the upright portion 681 are substantially straight lines (U-shaped cross section), and the direction thereof is the longitudinal direction (X direction) of the flat plate portion 731. Further, the folded-back portion 680 has an umbrella portion 682 whose tip is arc-shaped and protrudes in a hook shape above the standing portion. Due to the following reasons (1) to (3), the turn-back portion 680 can smoothly assemble the discharge electrode 300 when the discharge electrode 300 is assembled.

Hereinafter, (1) to (3) will be described.
(1) The folded portion 680 is positioned on the upper side with the umbrella portion 682 with respect to the wire 303, and the lower side is regulated by a rib (standing wall 685) at the wire outlet, so that the upper and lower regulating portions are The wire 303 is vertically positioned by shifting in the X direction.
As shown in FIG. 14, the folded portion 680 stands up from the left intermediate frame 600, and its horizontal section has a substantially U-shaped upstanding portion 681, and an umbrella-like shape with the tip protruding in a bowl shape at the upper end of the upstanding portion 681. And an umbrella portion 682. As shown in the left intermediate frame 600 of FIG. 6, the tip shape of the umbrella portion 682 is a circular arc portion 682-1 formed on the outer side of the device in the X direction, and the inner side of the device in the X direction is A linear portion 682-2 having a linear shape is formed. Although the wire 303 is indicated by a broken line in the umbrella portion 682 in FIG. 6, the arc portion 682-1 of the umbrella portion 682 has a hook shape protruding outward from the apparatus in the X direction with respect to the side surface of the standing portion 681 ( FIG. 14). Further, the end portion of the straight portion 682-2 almost coincides with the flat portion (straight portion) in the upright portion 681, and no saddle shape exists in this portion. Further, as shown in FIG. 14, a plate-like standing wall 685 that stands from the left intermediate frame 600 is formed at the end of the standing portion 681 inside the apparatus in the X direction. As shown in FIG. 14, the standing wall 685 has an upper end position in the height direction (Z direction) positioned below the lower surface of the arc portion 682-1 of the umbrella portion 682 in the height direction (Z direction). (Low). Further, as shown in FIG. 14, the arc portion 682-1 (portion where the bowl shape exists) and the upright wall 685 are in a left-right relationship in the left-right direction (X direction).

  In the discharge device 1000, the turn-back portion 680 regulates the positioning of the wire 303 with the lower surface of the arc portion 682-1 on the left side in the X direction and the upper end of the standing wall 685 on the right side in the X direction. In this way, by shifting the restriction portion of the wire 303 left and right (X direction), for example, it is easier to attach the wire 303 than in the case where the wire 303 is guided by cutting a groove in the side surface of the upright portion 681. Will improve. In addition, since the height of the discharge electrode 300 is kept constant in the vertical direction, the discharge space and the electric field space can be stably formed.

(2) The umbrella portion 682 of the folded portion is composed of only a plurality of curved surfaces, and the R where the wire 303 crawls greatly swells. For this reason, the wire 303 is not caught.
That is, in the discharge device 1000, when the arc portion 682-1 of the umbrella portion 682 is regarded as a part of a cylinder, the shape of the side surface includes only a plurality of curved surfaces (a plurality of side surfaces such as R1 and R2 in FIG. 14). Thus, R swells larger than the surface of the standing portion 681 in the region where the wire 303 crawls. Since the outer edge R of the arc portion 682-1 is larger than the surface of the standing portion 681, the wire 303 is not caught on the arc portion 682-1. Even if the wire 303 of the discharge electrode 300 is likely to get caught in the arc portion 682-1 at the time of assembly, the arc portion 682-1 is composed of only a curved surface and there is no flat portion, so the wire 303 is attached to the arc portion 682-1. Without staying, the wire 303 does not slide, and the wire 303 is not bent or stays at a place other than the desired position.

(3) Furthermore, the exit part (straight line part 682-2) of the umbrella part 682 is cut and straightened. For this reason, the wire 303 can be smoothly attached without the wire 303 being caught.
That is, in the discharge device 1000, as shown in FIG. 14, the end portion of the linear portion 682-2 inside the device almost coincides with the flat portion (straight portion) of the standing portion 681, and there is no flange portion in this portion. It was. As shown in FIG. 13, the end of this portion, that is, the end end surface 682-2-1 (FIG. 13) of the end portion inside the device of the straight portion 682-2 is a side surface 685 of the standing wall 685 on the device inside. -1 (FIG. 13). That is, the end portion end surface 682-2-1 and the side surface 685-1 form the same plane. The end portion of the straight portion 682-2 on the inner side of the apparatus almost coincides with the flat portion (straight portion) of the upright portion 681, and since there is no collar portion in this portion, the discharge electrode 300 (wire 303) is formed at the end portion. When turning in the left-right direction, it is not necessary to avoid the collar (the shape of the collar), and it is not caught on the collar, so that the assembling property is improved.

(Intermediate frame connection)
In the above embodiment, the right intermediate frame 500 and the left intermediate frame 600 are assumed to be separate parts. However, an arm that connects the right intermediate frame 500 and the left intermediate frame 600 may be provided so that the right intermediate frame 500 and the left intermediate frame 600 are integrally formed. In other words, the arm connecting the left and right intermediate frames is provided integrally with the left and right intermediate frames in parallel with the long side direction of the apparatus. Then, the intermediate frame on which the discharge electrode 300 is arranged is incorporated in the upper part of the counter electrode 700 in a state where the discharge electrode 300 is arranged on the integrated intermediate frame. In the case where the discharge electrode 300 is assembled with the counter electrode 700 being provided, the counter electrode 700 is in the way and is difficult to assemble. However, in the above configuration, the discharge electrode 300 (wire 303) can be wound around and installed on the intermediate frame with only the intermediate frame. Assembling is improved by incorporating the discharge electrode 300 and the intermediate frame into the apparatus in an integrated state.

  FIG. 15 is a view showing the periphery of the spring 400 attached to the terminal 301 of the discharge electrode 300. A recess 590 is formed in the right intermediate frame 500 on the lower side of the spring 400 as shown as a cross section EE. By providing a recess 590 that is lower than the right intermediate frame 500 on the lower side of the spring, a spring 400 (coil spring) having a height (dimension in the Z direction) and a width (dimension in the Y direction) larger than that of the discharge electrode 300 is increased. It can sink to the low side of the direction (Z direction). As a result, the height of the discharge electrode 300 can be reduced. Accordingly, since the spring 400 does not contact the intermediate frame, the discharge electrode 300 is not displaced in height and stable discharge can be obtained. Further, as the height of the spring 400 is lowered, the overall thickness of the device in the height direction (Z direction) is reduced, and the discharge device 1000 becomes compact. When there is no intermediate frame and only the lower frame 800 is provided, the lower frame 800 is lowered one step and a recess 590 is provided at the lower part of the spring 400. As shown in FIG. 15, a mark line 591 is provided in the recess 590. The mark line 591 may be a new recess that is one step lower than the recess 590, or may be one or two lines. The mark line 591 may be the mark mark 592 stamped on the frame portion in the vicinity of the spring, instead of the recess 590. A mark line 591 serves as a mark indicating an appropriate position of the end of the spring 400. The end of the spring 400 is positioned between the recess 590 or the two lines. Alternatively, the end of the spring 400 is marked so as to exceed one line. Using this mark line 591, the tension of the discharge electrode 300 can be easily adjusted while moving and adjusting the spring 400 in the left-right direction (x direction in FIG. 15). Although there is another attachment portion of the spring 400 (FIG. 6), the same applies to the attachment of the other spring 400.

(Counter electrode 700)
As described above, the angle of the flat plate portion 731 with respect to the lower frame 800 is defined as the inclination angle θ of the flat plate portion 731. For example, a cut having an angle similar to the inclination angle θ of the flat plate portion 731 is made in the lower surface of the intermediate frame or the upper frame 200. The end portion of the flat plate portion 731 is pressed from above in the height direction so that the end portion of the flat plate portion 731 is inserted into the cut. Thereby, even if it is a case where inclination-angle (theta) of the flat plate part 731 has shifted | deviated from the desired direction by the shaping | molding error, the contact at the time of an assembly, etc., the flat plate part 731 can be corrected to a desired angle. In addition, there is an effect that the angle does not sag over time. Accordingly, the distance between the electrodes of the discharge electrode 300 and the flat plate portion 731 does not change, so that a desired discharge (discharge current) and electric field are stably formed. In the case where the flat plate portion 731 is formed perpendicular to the lower frame 800, the cut is vertically inserted into the lower surface side of the frame located at the upper portion.

  At this time, when the end portion of the flat plate portion 731 is pressed by the intermediate frame, the end portion of the flat plate portion 731 is lowered by one step compared to the flat plate portion 731 to reduce the height. By doing so, the end portion can be supported by the intermediate frame at a position lower than the flat plate portion 731. Therefore, since the portion where the cut of the intermediate frame is not inserted is located at a position approximately the same height as the flat plate portion 731, the height of the intermediate frame does not protrude excessively above the flat plate portion 731, and the discharge device 1000 There is an effect that the entire thickness can be reduced.

(Preventing vibration of discharge electrode 300)
With reference to FIG. 24, a configuration for preventing vibration of the discharge electrode 300 will be described. FIG. 24 shows a state in which the right intermediate frame 500, the left intermediate frame 600, the counter electrode 700, the lower frame 800, and the discharge electrode 300 are mounted. Since the discharge electrode 300 is discharged by applying a high voltage, a slight vibration may occur depending on the discharge state, how the high voltage is applied, and the frequency. Further, the vibration is transmitted by the vibration of the compressor or the indoor unit of the air conditioner, and the discharge electrode 300 may cause a slight vibration. Further, such fine vibration may become a resonance sound and generate an abnormal sound. In addition, the minute vibration itself may generate abnormal noise. Therefore, the position of the tube 302 for increasing the bending strength of the discharge electrode 300 is set on the notch 506 through which the discharge electrode 300 passes. Furthermore, the horizontal width (width in the Y direction) of the notch 506 through which the discharge electrode 300 passes, which is at the same height as the tube 302, was made narrower than the thickness (outer diameter) of the tube 302. When the tube 302 is heat-shrinkable, the outer diameter of the tube 302 after heat shrinkage is made larger than the width of the notch 506 through which the discharge electrode 300 at the same height as the tube 302 passes. That is, the tube 302 is sandwiched between the width portions of the notches 506. Thus, since the outer diameter of the tube 302 is sandwiched between the notches 506, a part of the tube 302 is in contact with the notch 506 through which the discharge electrode 300 passes. When a part of the tube 302 is in contact with the notch 506 through which the discharge electrode 300 passes, the micro vibration of the discharge electrode 300 can be suppressed. By suppressing the vibration of the discharge electrode 300, there is an effect that abnormal noise is not reliably generated. Moreover, since the distance between the discharge electrode 300 and the counter electrode 700 is kept constant by preventing the vibration of the discharge electrode 300, the discharge space and the electric field space can be stably formed. Since the wire 303 of the discharge electrode 300 is very thin, it is difficult to apply the wire 303 to the notch 506, but the tube 302 is applied to the notch 506 to reliably prevent the discharge electrode 300 from vibrating. Therefore, as shown in FIG. 24, FIG. 6 and the like, the tube 302 is positioned on the lower end of the notch 506 through which the discharge electrode 300 passes, and the tube 302 is moved from the surface of the insulating wall 505 on the insulating wall 605 side. To the insulating wall 605 side).

(Preventing vibration of counter electrode 700)
With reference to FIG. 25 and FIG. 26, the structure which prevents the vibration of the counter electrode 700 is demonstrated. FIG. 25 is a perspective view showing the structure of the back side of the upper frame 200. FIG. 26 is a view showing a cross-sectional structure of the discharge device 1000. The counter electrode 700 is made of metal. Since each object has its own vibration, when the frequency of the compressor of the air conditioner continuously changes, the vibration of the counter electrode 700 may occur depending on the frequency of a specific compressor. In addition to the compressor of the air conditioner, the counter electrode 700 may vibrate due to vibration of the indoor unit or the like. When the counter electrode 700 vibrates, the metal may generate abnormal noise called chatter noise or resonance noise. Abnormal noise is uncomfortable for the user. Therefore, as shown in FIG. 25, a counter electrode contact rib 202 is provided on the back of the vertical lattice 205 of the upper frame 200 and is brought into contact with the counter electrode uppermost portion 731-1 (the upper end of the flat plate portion 731) (FIG. 26). . The counter electrode uppermost portion 731-1 is a portion closest to the upper frame 200 of the counter electrode 700, and is an end portion of the counter electrode 700, that is, an upper end of the flat plate portion 731. As shown in FIG. 26, the counter electrode contact rib 202 is slightly wrapped with the counter electrode uppermost part 731-1 and pressed from above as shown in FIG. That is, the counter electrode contact rib 202 and the counter electrode uppermost portion 731-1 are slightly overlapped in the assembly dimension, whereby the counter electrode 700 is slightly elastically deformed to generate a reaction force (elastic force). The counter electrode 700 is fixed by the counter electrode contact rib 202 being pressed against and in contact with the counter electrode uppermost portion 731-1. Thereby, the fine vibration of the counter electrode 700 made of metal can be suppressed. By suppressing the vibration of the counter electrode 700, there is an effect that abnormal noise is not reliably generated. Moreover, since the distance between the discharge electrode 300 and the counter electrode 700 is kept constant by preventing the counter electrode 700 from vibrating, the discharge space and the electric field space can be stably formed. As shown in FIG. 25, the counter electrode contact rib 202 extends in the vertical direction (Y direction) from the top to the bottom of the short side direction of the upper frame opening across a plurality of horizontal lattices 206. The counter electrode contact rib 202 can be brought into contact with all of the counter electrodes 700 in a plurality of rows by extending in the vertical direction from the top to the bottom in the short side direction of the upper frame opening. A plurality of counter electrode contact ribs 202 are provided in the long side direction of the upper frame opening (four examples are shown in FIG. 25). Although the number of the counter electrode contact ribs 202 may be one, the number of contact points with the counter electrode uppermost portion 731-1 is increased by virtue of the plurality of counter electrode contact ribs 202, and vibration can be reliably suppressed. Since the counter electrode contact rib 202 is parallel to the vertical grid 205 of the upper frame 200 and the counter electrode 700 is parallel to the horizontal grid 206 of the upper frame 200, the counter electrode contact rib 202 and the counter electrode uppermost portion 731-1 are 90 degrees. The direction is different and crosses. Since the counter electrode contact rib 202 is attached to the back surface of the vertical lattice 205 of the upper frame 200, the counter electrode contact rib 202 is parallel to the air flow of the air conditioner. Moreover, since it is a back surface of the vertical grid | lattice 205, the counter electrode contact rib 202 does not become a direct pressure loss.

  In the above embodiment, the configuration in which the connection portion 733 is bent as shown in FIGS. 8 and 12B has been described. However, as shown in FIG. 22, the connection portion 733 may not be bent.

  As an application example of the present invention, it can be incorporated into products such as room air conditioners, packaged air conditioners, cleaners, hand dryers, air purifiers, humidifiers, dehumidifiers, ventilators, elevators, refrigerators, cars, trains and the like. By mounting on these, bacteria, mold, viruses, etc. floating in the room passing through the discharge device 1000 are efficiently removed and inactivated by the generated discharge and electric field, the air is cleaned, and the comfort of the user is improved. improves.

In the above embodiment,
Three or more flat plate portions that are arranged in parallel and are in a longitudinal shape and have a flat plate shape, and a first connection portion that connects one end portions of the three or more flat plate portions in the longitudinal shape, A second connecting portion connecting the other end portions of the three or more flat plate portions in the longitudinal shape is integrally formed with a single conductive plate-like body, and a counter electrode whose potential is on the low voltage side; ,
A discharge device has been described that includes a discharge electrode of a linear body on a high-voltage side that is disposed along the longitudinal direction of the longitudinal shape between adjacent flat plate portions and has a higher potential than the counter electrode.

In the above embodiment,
The first connection part is:
A first projecting portion for each of the flat plate portions, which protrudes in the longitudinal direction from below the one end portion in the longitudinal shape of each of the flat plate portions;
Among the adjacent flat plate portions, the upper end of the first protruding portion on the near side in the alignment direction in which the three or more flat plate portions are sequentially arranged is connected to the lower end of the first protruding portion in the adjacent flat plate portion. A first connection piece for each of the adjacent flat plate portions,
The second connection portion is
A second projecting portion for each of the flat plate portions, protruding in the longitudinal direction from below the other end portion in the longitudinal shape of each of the flat plate portions,
Among the adjacent flat plate portions, each of the adjacent flat plate portions connected from the upper end of the second protruding portion on the near side in the alignment direction to the lower end of the second protruding portion in the adjacent flat plate portion. A discharge device including the second connection piece has been described.

In the above embodiment,
At least one first connection piece and at least one second connection piece are:
The discharge device having a bent portion that protrudes on the lower side of the end portion in the middle of connection from the upper end of the protruding portion to the lower end of the adjacent protruding portion has been described.

In the above embodiment,
The three or more flat plate portions are
It is inclined at a predetermined angle with respect to a virtual reference plane orthogonal to a virtual plane having the normal direction as the alignment direction,
The discharge electrode is
The discharge device has been described in which the cross-section of the linear body is rectangular, and the short sides of the rectangle are arranged substantially parallel to the virtual reference plane.

In the above embodiment,
The discharge device
A lower holding portion having a shape corresponding to the shape of the first connection portion and the second connection portion is formed, and the first connection portion and the second connection portion of the counter electrode are connected to the flat plate portion. A lower frame supported by the lower holding portion from the lower side which is the lower side of the end portion;
An upper holding part having a shape corresponding to the shape of the first connection part and the second connection part is formed, and the first connection part and the second connection part of the counter electrode are connected to the lower part of the lower frame. The discharge device including the upper holding frame held by the upper holding portion from the upper side opposite to the side holding portion has been described.

In the above embodiment,
An explanation has been given of the air conditioner in which the discharge device is placed between the suction port and the heat exchanger and upstream of the heat exchanger.

  100 Pre-filter, 200 Upper frame, 201 Upper rib, 202 Opposite electrode contact rib, 205 Vertical lattice, 206 Horizontal lattice, 207, 208 Side surface portion, 211 Handle portion, 300 Discharge electrode, 301 Terminal, 302 Tube, 303 Wire, 400 Spring, 400a Spring end, 500 Right intermediate frame, 505 Insulating wall, 506 Notch, 507 Extension part, 508 Flat part, 590 Recessed part, 591 Mark line, 592 Mark mark, 600 Left intermediate frame, 605 Insulating wall, 606 Notch, 607 extension part, 608 flat part, 680 folded part, 681 standing part, 682 umbrella part, 682-1 arc part, 682-2 straight part, 683 region, 685 standing wall, 700 counter electrode, 707 1st Connection piece, 708 Second connection piece, 709 High voltage side power supply Terminal, 709a Hook, 710 Low voltage side connection, 731 Flat plate, 731-1 Counter electrode top, 732 Band, 733 Connection, 733R First connection, 733L Second connection, 735 First protrusion, 736 Second protrusion, 741 Bending part, 742 Alignment direction, 800 Lower frame, 840 Low voltage terminal holding part, 841 High voltage terminal holding part, 842a, 842b Drain hole, 843 Counter electrode holding part, 844 Lower rib, 844, 847 Lower frame convex part, 851 to 854 claw, 931 flat plate part, 932 band part, 933 connection part, 1000 discharge device, 1500 support part, 1512 lattice part, 1530 high voltage substrate, 1514 hook part, 1518 panel contact part, 1519 opening part , 1520 Upper rib, 1521 Lower rib, 1522 Screwed part 1540 High pressure board cover, 1560 Support side low voltage terminal, 1570 Support side high voltage terminal, 2000 Support part assembly, 3000 Air conditioner, 3060 Heat exchanger, 3061 Air inlet, 3062 Air outlet, 3063 Air blow fan, 3064 Air conditioner pre Filter, 3070 panel.

Claims (8)

In a discharging device for discharging,
Two or more flat plate portions having a flat shape in a longitudinal shape, each flat plate portion having two or more flat plate portions aligned in a direction perpendicular to the longitudinal direction with the longitudinal direction of the longitudinal shape aligned. A counter electrode;
Disposed along the longitudinal direction between the adjacent flat plate portions, a linear discharge electrode having a higher potential than the counter electrode, and
An upper frame disposed above the counter electrode and the discharge electrode;
A lower frame disposed below the counter electrode and the discharge electrode;
Between the upper frame and the lower frame, provided with an intermediate frame disposed on the left end and the right end in the left-right direction of the lower frame,
At least one of the lower frame and the intermediate frame is
Having a folded portion where the discharge electrode is folded;
The discharge device further includes:
An upper restricting portion for restricting an upper position of the discharge electrode in the folded portion, and a lower restricting portion for restricting a position below the discharge electrode in the folded portion,
The upper restricting portion and the lower restricting portion are:
Discharge devices arranged in a shifted manner in the left-right direction of the lower frame. The folded portion is
2. The discharge device according to claim 1, wherein an upright wall is formed which is the lower regulating portion which is erected from below the folded portion and is positioned below the discharge electrode at an erected upper end. The upper end position above the lower regulating portion is
3. The discharge device according to claim 1, wherein the discharge device is located below a lower end position below the upper restricting portion. The folded portion is
3. The discharge device according to claim 2, wherein the discharge device has an umbrella portion that is an upper restriction portion that protrudes in a hook shape and is formed above and that positions the discharge electrode above the lower surface of the hook shape. The umbrella part is
5. The discharge device according to claim 4, wherein the discharge device has an arc shape that is formed only by a curved surface and has a diameter that is larger than a surface of the folded portion in a region where the discharge electrode crawls. The end portion of the folded portion in the direction in which the discharge electrode is folded, and the end portion of the standing wall in the direction in which the discharge electrode is folded,
Forming the same plane, connected continuously,
Above the end of the standing wall in the direction in which the discharge electrode is folded,
The discharge device according to claim 4, wherein the umbrella portion is not formed. The folded portion is
Standing upward, the horizontal cross section is U-shaped, the convex direction of the U-shape is opposite to the direction in which the discharge electrode is folded, and the start and end regions of the U-shape are straight lines ,
The discharge device according to claim 1, wherein the direction of the straight line is a direction in which the discharge electrode is folded back.   A product comprising the discharge device according to any one of claims 1 to 7.

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