JP2007253055A - Dust collector and air-conditioning equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector in which a leak current is reduced to the utmost limit, an electrostatic capacity in a dust collection part is small, the formation of a conductive film on the surface of an insulator covering an electrode is prevented even when any kind of dust is collected, further, a spacer is adhered to the electrode on a contact part between both, furthermore, a voltage of the electrode surface is secured and a substance of inducing a disease to a human body is captured and inactivated. <P>SOLUTION: In the dust collector, a perfect insulation type electrode 2 made by covering the whole of a sheet type conductive body 9 with the insulator and a nonconductive electrode 1 made by disposing an electrode terminal 6 on an arbitrary part of a sheet type nonconductive body 5 are alternately stacked while holding insulating protruded spacers 12 therebetween, thereby the dust collection part is constituted and different voltages are applied respectively to the perfect insulation type electrode 2 and the nonconductive electrode 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dust collector capable of removing airborne particulate matter in the field of air purification.

  Particulate suspended matter in the air, that is, dust, has been known as a cause of illnesses such as asthma and has been a target for removal in the past, but in recent studies, the particle size is 2.5 micrometers or less. There is a report that dust (so-called PM2.5) may induce diseases such as lung cancer, and further improvement of the collection technology is required. Among them, dust collectors that use electrostatic precipitating technology are excellent at collecting small particles with a particle size of micrometer or less, and have a low-pressure loss characteristic. There is a need for improved performance.

  Conventionally, as a dust collector of this type, a charging unit that charges dust by electric discharge is provided in the previous stage, and electrodes are stacked in the subsequent stage, and different voltages are applied alternately to form an electric field to collect charged dust. The thing which provided the dust collection part which collects is known. As an example of applying this configuration, Patent Document 1 discloses an electrode plate in which a conductive layer is formed along the central portion of the electrode substrate plate surface, and an insulating surface is provided on both sides thereof. A dust collector using an electrode plate on which a semiconductive layer is formed is shown. Hereinafter, the dust collector will be described with reference to FIGS. 20, 21, and 22. 20 is an overall view of the electrode plate 101, and FIG. 21 is a cross-sectional view taken along the line AB of FIG. As shown in FIGS. 20 and 21, the electrode plate 101 is formed with a conductive layer 103 at the center of one side of the surface of the insulating electrode substrate 102, and a semiconductive layer 104 is provided thereon. In addition, spacer protrusions 105 are provided on both sides of the electrode substrate 102 where the conductive layer 103 is not provided so as to dent the electrode substrate 102. The spacer protrusions 105 are provided so as to protrude only in the surface direction on one side of the electrode substrate 102, and the dust collecting portion is arranged so that the spacer protrusions 105 do not fit into the recesses when the electrode plates 101 are stacked one by one on both sides. 106 is provided so as to be shifted by half in the axial direction through which air passes. As shown in FIG. 22, the electrode plates 101 thus provided are alternately stacked and stacked to form the dust collecting portion 106, and every other electrode plate 101 is alternately placed on the electrode plate 101 by the high voltage power source 107. By applying different voltages, an electric field is provided in the space provided between each of the electrode plates 101, and the charged dust is introduced into this space and is attached to the electrode plate 101 and collected. An electric field is formed over almost the entire surface of the electrode plate 101 because the semiconductive layer 104 for passing a slight amount of charge is provided over almost the entire surface of the electrode substrate 102 provided with the conductive layer 103 in the center of the surface. Realizes high dust collection performance, and at the same time, the semiconductive layer 104 passes only a small amount of electric charge, so that an abnormal discharge with spark is caused at the edge of the electrode plate 101 adjacent to the upper and lower sides in the air passing direction. It has no structure.

  Further, Patent Document 2 shows a dust collector provided with a dust collecting portion composed of an anode plate obtained by molding a metal foil with an insulating resin and a dust collecting electrode plate provided in parallel with the anode plate. Has been. Hereinafter, the dust collector will be described with reference to FIGS. As shown in FIG. 23, the charging unit 108 includes a linear electrode 109 and a counter electrode plate 110, and a dust collection unit 106 is provided on the downstream side of the charging unit 108 in the ventilation direction. The dust collection unit 106 has a structure in which anode plates 111 and dust collection electrode plates 112 made of a conductive material such as metal are alternately stacked. In addition, in order to allow air to pass through the dust collector 106, the dust collector plate 112 is provided with conductive protrusions 113 that are bent at arbitrary portions in a zigzag manner. The anode plate 111 and the dust collector plate 112 are They are overlaid at regular intervals. Further, as shown in FIG. 24, the anode plate 111 is formed by coating a metal foil 114 with a molding material 115 made of an insulating synthetic resin, and even if the anode plate 111 comes into contact with the dust collecting electrode plate 112 and the conductive protrusion 113, it is short-circuited. It has a structure that does not cause Further, the anode plate 111 is devised to provide a water repellent layer 116 on the surface by mixing a water repellent in the mold material 115 or applying or adhering a water repellent material to the mold material 115. In the charging unit 108, a voltage of +4 to +10 kV is applied to the linear electrode 109 by the high-voltage power source 107 to give a potential difference with the counter electrode plate 110 connected to the ground. In the dust collecting unit 106, A voltage of about +2 kV is applied to the anode plate 111 by the high-voltage power source 107, and a potential difference is given to the dust collection electrode plate 112 connected to the ground.

  In the above configuration, a very strong electric field is created in the vicinity of the linear electrode 109 in the charging unit 108. Therefore, a substance having a charge in the air collides with air molecules, and electrons are separated from the air molecules, or the separated electrons adhere to other air molecules to become air ions. This is called air ionization. A discharge phenomenon in which air, which is an insulator between the counter electrode plate 110, causes a dielectric breakdown and ionization of the air with a certain large discharge current is called corona discharge. Air generated by corona discharge Ions adhere to the dust contained in the air supplied to the dust collector and charge the dust positively. The positively charged dust is introduced into the dust collecting unit 106 along the flow of the air flow, and is mainly applied to the dust collecting electrode plate 112 due to an electric field provided between the anode plate 111 and the dust collecting electrode plate 112. Clean air that has adhered and removed dust is blown out from behind the dust collection unit 106. Further, since the water repellent layer 116 is provided on the surface of the mold material 115 of the anode plate 111, the surface does not get wet even when the humidity becomes high, and the charge on the surface of the mold material 115 disappears. The device which maintains dust collection performance by preventing is made.

Further, in Patent Document 3, as shown in the exploded view of FIG. 25, the dust collecting plate 106 and the high voltage side electrode 117 constituting the dust collecting unit 106 are configured, and the volume resistivity is 10 to the 10th to 13th power Ω. A dust collecting portion is shown that can prevent a short circuit with a spark that may occur between both electrodes by using the high-voltage side electrode 117 made of a hygroscopic resin in the order of cm. The high-voltage side electrode 117 and the dust collecting electrode plate 112 are fixed by a frame to provide a space, and the high-voltage side electrode 117 and the dust-collecting electrode plate 112 are provided with a space on the high-voltage side electrode 117 in order not to lower the surface potential of the high-voltage side electrode 117. The electrode 117 and the dust collecting electrode plate 112 do not contact indirectly.
Japanese Patent No. 2662553 Japanese Examined Patent Publication No. 6-45017 Japanese Patent No. 3516725

  In the dust collection part of the dust collector described in Patent Document 1, since the conductive layer of the electrode plate is covered with a semiconductive layer instead of an insulating layer, insulation between the electrode plates to which different voltages are applied is completely ensured. The problem is that the leakage current that flows between the electrode plates to which different voltages are applied when dust collection is severely fouled or when the humidity is high becomes so large that it exceeds the capacity of the high-voltage electrode, making it impossible to apply the voltage. Therefore, there is a demand for a structure with no leakage current.

  Further, since it is necessary to provide a conductive layer on the surface of the central portion of the electrode substrate and then to provide a semiconductive layer thereon, there is a problem that the process becomes complicated, and a simple structure is required.

  In addition, the spacer protrusions are provided so as to protrude only in the surface direction on one side of the electrode substrate, and air passes through the dust collecting portion so that the spacer protrusions do not fit into the depressions when the electrode plates are stacked one by one on each side. It is provided so as to be shifted by half in the axial direction. However, in order to make it easy to create, when the structure is such that two belt-like electrode plates are stacked and wound into a roll shape, the spacer protrusion is at a predetermined position. There is a problem that a space to be provided between the electrode plates cannot be obtained due to spacer protrusions in the recesses, and a structure in which a space can be provided between the electrode plates even when wound in a roll shape. Is required.

  Moreover, in the dust collection part of the dust collector described in Patent Document 2, a space for allowing air to pass between the anode plate and the dust collection electrode plate is provided by providing a projection by bending on the dust collection electrode plate. Although the anode plate and the dust collecting electrode plate are bent, the space provided between the two electrode plates is distorted and becomes non-uniform, and the dust collecting performance is deteriorated in the portion where the space between the two electrode plates becomes large. Therefore, there is a demand for a structure in which the space provided between the electrode plates does not become uneven.

  In addition, since the conductive protrusions provided on the dust collecting electrode plate come into contact with the mold material of the anode plate, the structure becomes very close to the metal foil provided inside the anode plate. There is a problem that a large noise is generated when both electrodes are short-circuited at the terminal part etc. due to a large capacity and a large amount of charge is accumulated in both electrode plates. Is required.

  In addition, since the conductive protrusions provided on the dust collection electrode plate are in close proximity to the metal foil provided inside the anode plate by contacting the anode plate mold material, the mold material causes dielectric breakdown. There is a problem that it is likely to occur, and there is a demand for a structure that does not cause dielectric breakdown.

  In addition, tobacco smoke floating in the air contains a large amount of conductive components such as solids such as carbon, liquid oils such as tar, and moisture. Further, the exhaust gas from automobiles and the like discharged into the air contains carbon particles having conductivity. The dust collecting apparatus described in Patent Document 2 completely prevents a short circuit between the anode plate and the dust collecting electrode plate by using an anode plate coated with a metal foil with a molding material made of an insulating synthetic resin in the dust collecting portion. However, a conductive film may be formed on the surface of the molding material by collecting dust containing a conductive component. When a conductive film is formed on the surface of the mold material, the charge on the surface of the mold material expressed by applying a voltage to the metal foil of the anode plate is released to the dust collecting electrode plate in contact with the mold material. And the electric field is not formed in the space provided between the anode plate and the dust collecting electrode plate, resulting in a problem that the dust collecting performance is deteriorated. And the conductive film which causes the disappearance of the electric charge developed on the surface of the mold material is not only the film formed by adhering so that the moisture gets wet. When the dust collection unit collects tobacco smoke or the like, a conductive film is formed by adhering not only moisture but also dust containing a conductive component to the surface of the molding material covering the electrode. Then, when the mold material covering the metal foil of the anode plate and the dust collecting electrode plate come into contact with each other, the movement of electric charge occurs, and as a result, the electric charge developed on the surface of the mold material disappears and is not replenished to the surface of the mold material thereafter. Therefore, an electric field is not formed in the space provided between the anode plate and the dust collection electrode plate, and the dust collection performance is reduced. Therefore, there is a problem that even if water repellency is given to the surface of the mold material, the dust collection performance is deteriorated, and no matter what dust is collected, a conductive film is formed on the surface of the mold material of the anode plate. It is required to prevent this.

  Further, in the dust collecting portion, there is a problem that strength cannot be obtained unless the contact portion between the electrode plate and the spacer provided to hold the electrode plate at a constant interval and allow air to pass therethrough, The contact portion with the electrode is required to be adhered.

  Moreover, in the dust collection part of the dust collector described in patent document 3, since the electrode terminal is not provided in every part of the high voltage side electrode which has semiconductivity, even indirectly with an insulating spacer etc. When the high-voltage side electrode comes into contact with the dust collection electrode plate, there is a problem that the voltage drop causes the surface potential of the high-voltage side electrode to drop and the dust collection performance deteriorates. Even if it does, it is requested | required that the electric potential of the surface of an electrode should be ensured.

  In addition, there is a problem that the structure is complicated because it is necessary to fix the high voltage side electrode and the dust collecting electrode plate with a frame so that the high voltage side electrode and the dust collecting electrode plate do not contact with each other in order to ensure the dust collecting performance. Even with a simple structure, it is required to have high dust collection performance.

  Some substances floating in the air enter the human body, such as fungi, mold, viruses, or allergens, and have adverse effects such as diseases. The substances that induce disease in the human body are collected by the dust collector. And inactivation is required.

  The present invention solves such a conventional problem, minimizes the leakage current, eliminates the need to provide a semiconductive layer after providing a conductive layer on the center surface of the electrode substrate, and Even in a roll-shaped structure, a space can be provided between the electrode plates, the space provided between the electrode plates is not uneven, the electrostatic capacity of the dust collecting part is small, and the insulation is Insulation breakdown of the body does not occur, and no matter what dust is collected, a conductive film is prevented from being formed on the surface of the insulator covering the electrode, and the contact portion between the spacer and the electrode In addition, the electrode surface potential, that is, electric charge, can be secured, and both electrodes are fixed with a frame so that the high-voltage side electrode and the dust collection electrode do not contact to ensure dust collection performance. Do not need to Aims at the material to be collected by the dust collection unit, and to provide an air conditioning apparatus equipped with the dust collector and the dust collector can be inactivated.

  In order to achieve the above-mentioned object, the dust collector of the present invention is a non-conductive type in which a sheet-shaped conductor is entirely covered with an insulator and an electrode terminal is provided at an arbitrary portion of the sheet-shaped non-conductor. The dust collecting part is configured by alternately stacking conductive electrodes with insulating spacers in between, and different voltages are applied to each of the completely insulated electrode and the non-conductive electrode. .

  The dust collector according to claim 1, wherein an electrode terminal is provided along a central portion of the non-conductive electrode.

  The dust collector according to claim 1 or 2, wherein the insulating spacer is a porous body having a three-dimensional network structure.

  In the dust collector according to claim 1 or 2, the insulating spacer is a corrugated sheet.

  In addition, both the front and back sides of either side of either a fully-insulated electrode with the entire sheet-like conductor covered with an insulator or a non-conductive electrode with electrode terminals on any part of the sheet-like non-conductor A spacer is provided to form a dust collection section by alternately laminating fully insulated electrodes and non-conductive electrodes, and different voltages are applied to the fully insulated electrodes and non-conductive electrodes, respectively. It is.

  Further, in the dust collector according to claim 5, the sheet-like non-conductive body is recessed on both sides of the non-conductive electrode provided with the electrode terminal along the central portion of the sheet-like non-conductive body. Protruding spacers are provided.

  Further, in the dust collecting apparatus according to claim 5, the spacers protruding on the front surface and the spacer protruding on the back surface are arranged in a row on both sides of the non-conductive electrode without electrode terminals. Protruding spacers protruding on the front side of the first non-conductive electrode and the back side of the second non-conductive electrode when alternately stacking the fully insulated electrodes and the non-conductive electrodes. The protruding spacers are projectedly overlapped in the stacking direction, and the protruding spacers are arranged so that the third and subsequent sheets are the same.

  Further, in the dust collecting device according to any one of claims 5 to 7, there are provided a protruding spacer protruding on the front surface and a protruding spacer on the back surface, one row on each side of the non-conductive electrode without electrode terminals. Protruding spacers that are alternately provided and protrude on the front side of each row and spacers that protrude on the back side are provided on the same axis in each row in the direction in which air passes through the dust collecting portion. is there.

  The dust collector according to any one of claims 1 to 8, wherein the insulator and the insulating spacer in the fully insulated electrode are made of an insulating resin.

  The dust collector according to any one of claims 1 to 9, wherein the surface of the sheet-like non-conductor in the non-conductive electrode is semiconductive.

  The dust collector according to claim 10, wherein the sheet-like non-conductor in the non-conductive electrode is made of a semi-conductive resin.

  The dust collector according to claim 10, wherein a sheet-like insulator provided with a semiconductive resin is used as a sheet-like non-conductor of a non-conductive electrode.

  The dust collector according to claim 10, wherein the surface of the sheet-like insulator is coated with a semiconductive paint as the sheet-like non-conductor of the non-conductive electrode.

  Further, in the dust collecting apparatus according to any one of claims 1 to 13, a belt-like fully insulated electrode and a non-conductive electrode similarly made into a belt are overlapped and wound into a roll shape. To do.

  The dust collector according to any one of claims 1 to 13, wherein a silicone polymer film is provided on the surface of the fully insulated electrode or the entire dust collecting portion.

  Further, in the dust collecting device according to claim 15, as a method of providing a silicone polymer film on the entire dust collecting part, the dust collecting part is immersed in a silicone polymer solution and then dried.

  The dust collector according to claim 16, wherein a nonpolar organic solvent is used as a solvent of the silicone polymer solution.

  The dust collector according to any one of claims 1 to 17, wherein an antibacterial agent having an antibacterial action is attached to the dust collecting portion.

  The dust collector according to claim 18, wherein the antibacterial agent is a titania or silica alumina in which a silver component is fixed.

  The dust collector according to any one of claims 1 to 17, wherein an antifungal agent having an antifungal action is attached to the dust collecting portion.

  The dust collector according to any one of claims 1 to 17, wherein an antiviral agent having a virus inactivating action is attached to the dust collecting portion.

  The dust collector according to claim 21, wherein the antiviral agent is a polyphenol having a phenolic hydroxyl group in the molecular structure.

  The dust collector according to any one of claims 1 to 17, wherein an anti-allergen agent having an allergen inactivating action is attached to the dust collecting portion.

  The dust collector according to claim 23, wherein the anti-allergen agent is an aromatic hydroxy compound having a phenolic hydroxyl group in at least one place.

  The dust collector according to any one of claims 1 to 17, wherein a liquid mixed with an antibacterial, virus inactivating and allergen inactivating agent is collectively attached to the dust collecting part. It is.

  In the dust collector according to any one of claims 1 to 25, an ionization means is provided on the windward side of the dust collector.

  Furthermore, in the dust collector according to any one of claims 1 to 25, ionized air is supplied indoors to the outlet of the dust collector including the dust collector and the air blowing means, and the indoor dust is weakly charged. An ionizing means is provided.

  Further, in the dust collector according to claim 27, an ionization means composed of a discharge electrode and a counter electrode is provided at the outlet of the dust collector provided with the dust collection portion and the air blowing means, and the discharge electrode of the ionization means is provided on the discharge electrode. At the same time as applying a negative voltage, negative ions obtained by connecting the counter electrode of the ionization means to ground are supplied to the room, and a positive voltage is applied to either the fully insulated electrode or non-conductive electrode of the dust collector. The other electrode that does not apply a positive voltage simultaneously with the application is connected to the ground.

  Moreover, the air conditioner of this invention is provided with the dust collector as described in any one of Claims 1 thru | or 28 as described in Claim 29, It is characterized by the above-mentioned.

  According to the present invention, it is also possible to provide a uniform space between the electrodes with a simple structure, to reduce the number of connection points between the electrode and the high-voltage power source by winding the structure, High dust collection performance can be obtained at any part of the dust collector without collecting leakage and increasing the leakage current and eliminating the charge on the electrode surface even when the dust collector becomes dirty or the humidity is high. In addition, even if the electrode is short-circuited, it will not generate a large noise, and even if it receives an impact or performs cleaning operations such as washing with water, it will prevent the dust collecting part from being damaged or damaged. And a dust collecting device having an effect of collecting and inactivating in a dust collecting part a substance that enters the human body such as bacteria, mold, viruses, or allergens floating in the air and induces disease, and Provide air conditioning equipment Can.

  In order to achieve the above-mentioned object, the dust collector of the present invention is a non-conductive type in which a sheet-shaped conductor is entirely covered with an insulator and an electrode terminal is provided at an arbitrary portion of the sheet-shaped non-conductor. It is characterized in that a dust collecting part is formed by alternately stacking conductive electrodes with insulating spacers in between, and different voltages are applied to each of the completely insulated electrode and the non-conductive electrode. In this structure, the insulation between the fully-insulated electrode and the non-conductive electrode is ensured by using a fully-insulated electrode in which the entire sheet-like conductor is covered with an insulator. The non-conductive electrode is an optional sheet-like non-conductor having a surface resistivity of 10 8 Ω / □ or more, preferably 10 11 Ω / □ or more, and a volume resistivity of 10 10 Ω · cm or more. The electrode terminal for supplying an electric charge to this position is provided. The surface of the non-conductive electrode is non-conductive, but has an electrical property that allows a slight charge to pass therethrough and allows the charge supplied from the electrode terminal to be placed on the entire surface. The non-conductive electrode uses the sheet-like non-conductor having the above-mentioned surface and volume resistivity as the electrode substrate in advance, so that it can function as an electrode simply by providing the electrode terminal. There is no need to provide a layer and it is easy to create. Then, a charge corresponding to a voltage applied to an electrode terminal provided at an arbitrary part of the nonconductive electrode is uniformly given to the surface of the nonconductive electrode through the electrode terminal. The fully insulated electrode is applied with a voltage different from that of the non-conductive electrode, and a space between the two electrodes provided by stacking the fully insulated electrode and the non-conductive electrode with an insulating spacer interposed therebetween. A uniform electric field can be provided on the entire surface. In addition, since the electrode terminal is provided at an arbitrary position, electric charges are placed on the entire surface of the non-conductive electrode, and the sheet-like conductor of the completely insulated electrode is covered with the insulator so that it is non-conductive. Due to the fact that there is no direct contact with the electrode, the charge on the surface of the non-conductive electrode is difficult to move and the charge is supplied from the electrode terminal to the surface of the non-conductive electrode as soon as it moves. This has the effect that the surface potential of the conductive electrode can be maintained at a high value.

  The dust collector according to claim 1, wherein an electrode terminal is provided along a central portion of the non-conductive electrode. The central portion of the non-conductive electrode refers to the central portion in the direction perpendicular to the direction in which air passes. If the electrode terminals are provided at both ends of the non-conductive electrode, the capacitance of the dust collector will increase, causing noise when the short-circuit occurs between the fully insulated electrode and the non-conductive electrode. . In addition, when the electrode terminals are provided at both ends of the non-conductive electrode, the distance from the fully insulated electrode becomes close, so that the charge supplied by the electrode terminal reaches the insulator surface of the fully insulated electrode under high humidity conditions. It becomes easy to cancel out the electric charge developed on the insulator surface of the fully insulated electrode and cause the dust collecting performance to deteriorate. In the present invention, since the electrode terminal is provided along the center of the non-conductive electrode, the electrode terminal can be provided continuously without interruption throughout the non-conductive electrode. Further, since the electrode terminals are continuous without interruption, the number of connecting portions between the high voltage power source and the electrode terminals can be reduced. In addition, the electrostatic capacity of the dust collector can be reduced compared with the case where electrode terminals are provided at both ends of the non-conductive electrode, and at the same time, the insulation of the non-conductive electrode from the electrode terminal of the non-conductive electrode at high humidity. It has the effect of minimizing the phenomenon of electric charges flowing around the body surface.

  The dust collector according to claim 1 or 2, wherein the insulating spacer is a porous body having a three-dimensional network structure. The porous body is made of a fibrous base material having a network-like three-dimensional structure in a three-dimensional direction, and air can pass through the inside of the porous body. By sandwiching a porous body having such a three-dimensional network structure between the electrodes, a space for allowing air to pass between the electrodes can be provided.

  In the dust collector according to claim 1 or 2, the insulating spacer is a corrugated sheet. The corrugated sheet has a shape such as a wave shape, a triangular shape, or a U shape in a cross section perpendicular to the ventilation direction, and the corrugated sheet is sandwiched between the electrodes so that a space for allowing air to pass between the electrodes is regular. It has the effect | action that it can provide uniformly by a simple arrangement | sequence. Incidentally, the shape of the corrugated sheet here is not limited as long as it is a shape capable of creating a space.

  In addition, both the front and back sides of either side of either a fully-insulated electrode with the entire sheet-like conductor covered with an insulator or a non-conductive electrode with electrode terminals on any part of the sheet-like non-conductor A spacer is provided to form a dust collection section by alternately laminating fully insulated electrodes and non-conductive electrodes, and different voltages are applied to the fully insulated electrodes and non-conductive electrodes, respectively. It is. By providing projecting spacers on both the front and back sides of either a fully insulated electrode or a non-conductive electrode, a space with a stable dimension can be provided between both electrodes without separately providing a spacer component. It has the effect of becoming possible.

  Further, in the dust collector according to claim 5, the sheet-like non-conductive body is recessed on both sides of the non-conductive electrode provided with the electrode terminal along the central portion of the sheet-like non-conductive body. Protruding spacers are provided. Since the protrusion-like spacer can be provided without requiring extra material by recessing the sheet-like non-conductor, the production can be simplified and the component cost can be reduced. In addition, by providing the electrode terminal along the central portion, it is possible to provide protruding spacers on both sides of the non-conductive electrode, and it is possible to prevent the electric charge from wrapping around the insulator of the fully insulated electrode, and the fully insulated electrode Even when the non-conductive electrodes are stacked, it is possible to simultaneously realize a space having a stable dimension between the two electrodes.

  Further, in the dust collecting apparatus according to claim 5, the spacers protruding on the front surface and the spacer protruding on the back surface are arranged in a row on both sides of the non-conductive electrode without electrode terminals. Protruding spacers protruding on the front side of the first non-conductive electrode and the back side of the second non-conductive electrode when alternately stacking the fully insulated electrodes and the non-conductive electrodes. The protruding spacers are projectedly overlapped in the stacking direction, and the protruding spacers are arranged so that the third and subsequent sheets are the same. When laminating a fully insulated electrode and a non-conductive electrode, a protruding spacer provided on the front side of the first non-conductive electrode and a protruding spacer provided on the back side of the second non-conductive electrode; When it is in a different position without overlapping projection in the stacking direction, it becomes easy to bend so that the sheet-like flexible fully-insulated electrode and non-conductive electrode lose the parallel relationship due to the pressure due to the stacking, As a result, the space provided between the two electrodes loses the parallelism and uniformity of the height, and the dust collection performance tends to deteriorate. The projecting spacer provided on the front side of the first non-conductive electrode and the projecting spacer provided on the back side of the second non-conductive electrode projectively overlap in the stacking direction, and the third and subsequent sheets Similarly, when the protruding spacers are arranged so as to overlap with each other, the protruding spacers provided on the front side of the first non-conductive electrode and the protruding spacers provided on the back side of the second non-conductive electrode are located at the same position. Thus, the completely insulated electrode is sandwiched between the two electrodes, so that both electrodes will not bend even when subjected to pressure due to lamination. Therefore, the space provided between both electrodes has the effect of maintaining dimensional uniformity.

  Further, in the dust collector according to any one of claims 5 to 7, a row of protruding spacers protruding on the front side and a spacer protruding on the back side are alternately provided on both sides of the non-conductive electrode without electrode terminals. The protrusion-like spacer protruding on the front side and the spacer protruding on the back side of each row are provided on the same axis in the direction in which air passes through the dust collecting portion. When projecting spacers with the same projecting direction are provided on the same axis in each row in the direction in which air passes through the dust collecting part, projecting spacers are provided in the same direction on both sides of each part, and the electrode When both layers are stacked, pressure is applied to the electrodes in the same direction on both sides, so that the fully insulated electrode and the non-conductive electrode are easily bent to form a parallel and uniform space. It becomes difficult. This phenomenon appears more conspicuously in the case of a structure in which strip-shaped electrodes are overlapped and wound in a roll shape because the position of the protruding spacer cannot be brought to a predetermined position. Here, protruding spacers protruding on the front side and protruding spacers protruding on the back side are alternately provided on both sides of the non-conductive electrode without electrode terminals, and further on the back side and protruding spacers protruding on the front side. Protruding spacers are provided on the same axis in the direction in which air passes through the dust collecting part, so that one protruding spacer on both sides is on the front side and the other protrusion The spacer will apply pressure to the back side. Therefore, the force that bends the electrode to either the front side or the back side is dispersed and becomes difficult to bend, and the space provided between both electrodes has the effect of maintaining the dimensional uniformity.

  The dust collector according to any one of claims 1 to 8, wherein the insulator and the insulating spacer in the fully insulated electrode are made of an insulating resin. Examples of the insulating resin include polyolefins such as polypropylene (hereinafter referred to as PP) and polyethylene (hereinafter referred to as PE), polyesters such as polyethylene terephthalate (hereinafter referred to as PET) and polybutylene terephthalate (hereinafter referred to as PBT), polystyrene (hereinafter referred to as PS), polycarbonate (hereinafter referred to as PC). ) And polyurethane. Insulating resin has a characteristic that the dielectric strength is 15 kV / mm or higher and the insulating property is very high, and the moldability and workability are good. Therefore, the sheet-like conductor is covered with resin by laminating or molding. It is possible to easily produce a fully insulated electrode having high insulation properties. In addition, since it is highly flexible, it has an effect that a dust collection portion can be formed by forming a strip of a completely insulated electrode and a non-conductive electrode, or an insulating spacer, and winding them in an overlapping manner. .

  The dust collector according to any one of claims 1 to 9, wherein the surface of the sheet-like non-conductor in the non-conductive electrode is semiconductive. Examples of the semiconductive material include nylon 6 or nylon 12, and hygroscopic resins such as copolymers using these nylons. Such a material absorbs a slight amount of moisture in the air and has a surface resistivity of 10 to 11-15 Ω / □ and a volume resistivity of 10 to 11-15 Ω · cm. The material having a resistance value within this range is non-conductive but has a semi-conducting property of passing a small amount of electric charge. Therefore, the charge supplied from the electrode terminal when used as a sheet-like non-conductor. Can be spread over the entire surface. In addition, it is highly flexible and has an effect that it is easy to assemble such as winding in a roll shape and is not easily damaged. In addition, since the non-conductive electrode can play a role of ensuring the dust collection performance when the electric charge reaches the surface, it is not always necessary to supply the electric charge to the inside of the sheet-like non-conductive material. Therefore, a resinous sheet such as PP, PE, PET, PBT is used as a base material for obtaining strength, and a surface is provided with a semiconductive resin such as nylon 6 or nylon 12, or a sheet shape used as a base material. Even if the surface of the insulator coated with a semiconductive paint containing a semiconductive component such as zinc oxide or ion conductive resin is used as a sheet-like nonconductor for a nonconductive corrugated electrode, the same effect is obtained. The dust collection part which has is obtained.

  Further, in the dust collecting apparatus according to any one of claims 1 to 13, a belt-like fully insulated electrode and a non-conductive electrode similarly made into a belt are overlapped and wound into a roll shape. To do. A strip of a completely insulated electrode and a non-conductive electrode, and a roll-shaped winding with an insulating spacer interposed therebetween, whereby the electrode terminal of the non-conductive corrugated electrode and the sheet-like conductor of the fully insulated electrode and the high-voltage power supply The number of connecting points can be one, and the dust collecting part can be easily created.

  The dust collector according to any one of claims 1 to 13, wherein a silicone polymer film is provided on the surface of the fully insulated electrode or the entire dust collecting portion. Dust containing conductive components such as cigarette smoke adheres to the surface of the insulator of the fully insulated electrode or the entire dust collecting part, and a conductive film is formed. The charges developed on these surfaces move and disappear. As a result, the electric field in the space where dust passes is weakened. This weakening of the electric field causes a decrease in dust collection performance. In the present invention, since a silicone polymer film having insulating properties, water repellency, and micro gaps is provided on the surface of the insulator of the fully insulated electrode or the entire dust collecting portion, dust containing conductive components such as cigarette smoke is provided. Even if dust is collected, it can be prevented from continuously adhering to the surface of the dust collecting part, and as a result, the formation of a conductive film can be prevented. Even high dust collection performance can be maintained. In addition, since the silicone polymer has a great feature that it has high chemical stability, elasticity and adhesiveness, it strongly adheres to the entire surface of the dust collecting part, and forms a stable, strong and highly elastic film. Therefore, even if an external force such as scratching the surface of the dust collection part is applied, the silicone polymer film does not spill or peel off the surface of the dust collection part, and even if washing work such as washing is performed Since the silicone polymer film does not elute into the cleaning liquid, high dust collection performance can be obtained semi-permanently and stably. In addition, when a silicone polymer film is provided on the entire dust collecting part, the contact surface between the electrode and the spacer is bonded with a silicone polymer having high adhesion and elasticity, so that the entire dust collecting part has high strength and elasticity. Have. Therefore, even if it receives an impact from the outside, the dust collecting part has an effect that it can maintain an integrated state by adhesion without being destroyed.

  Further, in the dust collecting device according to claim 15, as a method of providing a silicone polymer film on the entire dust collecting part, the dust collecting part is immersed in a silicone polymer solution and then dried. By immersing the dust collecting part in a silicone polymer solution and drying, the entire dust collecting part is bonded and integrated with the silicone polymer to obtain elasticity and strength, and a uniform silicone polymer film is formed on the entire dust collecting part. It has the effect | action that it can perform collectively collectively.

  The dust collector according to claim 16, wherein a nonpolar organic solvent is used as a solvent of the silicone polymer solution. The silicone polymer can be diluted with an aromatic or hydrocarbon organic solvent having a small polarity such as toluene, cyclohexane or normal hexane. By diluting with an organic solvent having such a small polarity, the viscosity of the silicone polymer is lowered and at the same time the dispersion is improved, and the silicone polymer film can be uniformly provided on the entire dust collecting portion.

  The dust collector according to any one of claims 1 to 17, wherein an antibacterial agent having an antibacterial action, an antifungal agent having an antifungal action, an antiviral agent having a virus inactivating action, or an allergen is provided in the dust collecting portion. The anti-allergen agent having an inactivating action is attached or fixed all together and fixed. By using, for example, titania or silica alumina fine particles fixed with silver components as an antibacterial agent, the silver component having antibacterial action can be uniformly dispersed in the antibacterial agent and uniformly in the dust collecting part. It has the effect that it can be attached. In addition, for example, by using an antidepressant mainly composed of thiabendazole, it is possible to suppress the growth of moss classified as a fungus. In addition, by using polyphenols with a phenolic hydroxyl group in the molecular structure, such as epicatechin gallate, as an antiviral agent, envelopes the envelope of the virus and spikes present on the surface of the envelope, thereby suppressing the infecting action on cells. Doing so can prevent proliferation. In addition, for example, by using an aromatic hydroxy compound having a phenolic hydroxyl group as an antiallergen agent, the phenolic hydroxyl group wraps the allergen, invalidates the specific binding part of the allergen, and causes an allergy. Specific binding can be suppressed. By attaching and immobilizing these drugs to the dust collection part 4, the substance that enters the human body, such as bacteria, mold, viruses, or allergens floating in the air, is collected in the dust collection part. And it has the effect | action that it can inactivate in a dust collection part.

  In the dust collector according to any one of claims 1 to 25, an ionization means is provided on the windward side of the dust collector. Air ions are collected by the ionization means that ionizes the air by causing discharge and causing ionization of the air like a charged part consisting of a discharge electrode having a linear shape, a needle shape, a spine shape and a counter electrode, and a counter electrode. The dust collection performance can be improved by charging the dust by generating it on the wind and adhering it to the dust present in the taken-in air, and sending the charged dust to the dust collecting part and collecting it. Have

  Furthermore, in the dust collector according to any one of claims 1 to 25, ionized air is supplied indoors to the outlet of the dust collector including the dust collector and the air blowing means, and the indoor dust is weakly charged. An ionizing means is provided. Air ions obtained by ionization means that ionize air by causing discharge and causing ionization of air like a charged part consisting of a discharge electrode having a shape such as a linear, needle-like, or spine-like discharge and a counter electrode By supplying to the room from the outlet of the dust collector, the dust present in the air in the room is weakly charged. By-product generated by ionization means because it is only necessary to generate charged air dust in the dust collection part and collect it in the dust collection part, and to generate air ions in an amount that can slightly charge the dust in the room. It has the effect that the amount of ozone in the object can be reduced to the limit.

  Further, in the dust collector according to claim 27, an ionization means composed of a discharge electrode and a counter electrode is provided at the outlet of the dust collector provided with the dust collection portion and the air blowing means, and the discharge electrode of the ionization means is provided on the discharge electrode. At the same time as applying a negative voltage, negative ions obtained by connecting the counter electrode of the ionization means to ground are supplied to the room, and a positive voltage is applied to either the fully insulated electrode or non-conductive electrode of the dust collector. The other electrode that does not apply a positive voltage simultaneously with the application is connected to the ground. The discharge electrode mainly has a shape like a needle with a sharp tip, and the counter electrode has various shapes such as a rod shape and a plate shape. By applying a negative voltage to the discharge electrode and simultaneously connecting the counter electrode to the ground, an extremely strong electric field is generated near the sharp tip of the discharge electrode. As a result, the air near the tip of the discharge electrode is ionized to become ions, and negative ions, which are said to have a relaxation effect, are released so as to be repelled from the discharge electrode to which a negative voltage is applied. Then, the air is supplied to the room by the wind of the air blowing means. By supplying negative ions into the room in this way, a resident in the room is brought to a relaxation effect, and at the same time, the dust in the room is weakly charged, and the charged dust can be taken into the dust collecting portion and collected. In addition, by applying a positive voltage to one of the electrodes of the dust collection unit, the main body can be easily charged positively, and it is possible to obtain higher dust collection performance by bringing the negatively charged dust closer to the main body. It has the action.

  Moreover, the air conditioner of this invention is provided with the dust collector as described in any one of Claims 1 thru | or 28 as described in Claim 29, It is characterized by the above-mentioned. By providing the dust collector according to any one of claims 1 to 25 in front of the heat exchanger of the air conditioner, the air conditioner can be stably provided with a high air cleaning function.

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

(Embodiment 1)
A non-conductive electrode 1 and a fully insulated electrode 2 are alternately stacked while sandwiching a porous body 3 having insulating properties and a three-dimensional network structure, and a different voltage is applied to each electrode. 4 is a front view of the air suction surface 4, and FIG. 2 is a cross-sectional view of the dust collection portion 4 as viewed from the side. Further, FIG. 3 shows a top view showing an example of the non-conductive electrode 1 using a single sheet-like non-conductor 5, and FIG. 4 shows a cross-sectional view from the side. The non-conductive electrode 1 has a structure in which an electrode terminal 6 is provided along the center of the sheet-like non-conductive body 5 in the air passing direction, that is, the width direction. The sheet-like non-conductor 5 uses a semi-conductive resin such as nylon, and the electrode terminal 6 is formed by applying a metal foil such as aluminum or a conductive paint containing carbon or metal. FIG. 5 is a cross-sectional view of the non-conductive electrode 1 in which the sheet-like insulator A7 is used as a base material, the semiconductive layer 8 is provided thereon, and the electrode terminal 6 is provided on the semiconductive layer 8, as viewed from the side. . As the sheet-like insulator A7, an insulating resin such as PP or PBT is used, and the semiconductive layer 8 is provided thereon, and the electrode terminal 6 is provided thereon. As a method of forming the semiconductive layer 8, a thin sheet of resin having semiconductivity such as nylon is attached, or various metal ions such as sodium ions and various anions such as sulfate ions, and metal oxides such as zinc oxide. Specific examples include applying a paint containing a semiconductive component. FIG. 6 shows a top view of the fully insulated electrode 2 and FIG. 7 shows a sectional view seen from the side. The fully insulated electrode 2 has a structure in which both sides of the sheet-like conductor 9 are bonded so as to be sandwiched between the sheet-like insulator B10 having a width wider than that of the sheet-like conductor 9. Insulating structure. The sheet-like conductor 9 may be a metal foil such as aluminum, or a sheet-like base material coated with a conductive paint containing carbon or metal. As a material of the sheet-like insulator B10, an insulating resin such as PP, PE, PET, PBT, PS, and PC is mainly used. Thus, since the electrode terminal is provided in all the center parts of a sheet-like nonconductor, the nonconductive electrode has a structure capable of supplying electric charges over the entire surface of the sheet-like nonconductor. Further, compared with the case where the electrode terminal 6 is provided not only in the central portion of the sheet-like non-conductor 5 but also on both sides, the electric charge does not flow around the surface of the sheet-like insulator B 10 of the fully insulated electrode 2. In addition, since the electric charges developed on the surface of the sheet-like insulator B10 are not canceled out and the electric field between the two electrodes is hardly hindered, the dust collecting performance is hardly lowered particularly at high humidity. Further, the sheet-like conductor 9 of the fully insulated electrode 2 is covered with the sheet-like insulator B10 and has a structure that does not directly contact the non-conductive electrode 1 and the electrode terminal 6 is the center of the sheet-like non-conductor 5. Since the charge on the surface of the non-conductive electrode 1 does not move or is supplied from the electrode terminal 6 immediately after the movement, the surface of the non-conductive electrode 1 is provided. The potential does not decrease. Therefore, even if the non-conductive electrode 1 and the fully insulated electrode 2 are in indirect contact with a spacer such as the porous body 3, it is possible to maintain high dust collection performance, and the non-conductive electrode 1 and Since it is not necessary to have a structure in which the fully insulated electrode 2 is fixed by, for example, a frame and is not indirectly contacted, the structure and the material strength are limited, and the production is easy.

  The porous body 3 is made of a fibrous base material having a network-like three-dimensional structure in a three-dimensional direction and has a space through which air can pass. As a material, an insulating resin such as PP, PE, PET, PBT, or polyurethane is mainly used. By sandwiching the porous body 3 having such a three-dimensional network structure between the non-conductive electrode 1 and the fully insulated electrode 2, air passes between the non-conductive electrode 1 and the fully insulated electrode 2 A space to be made can be provided. In addition, when a silicone polymer film having insulating properties, water repellency, and micro gaps is provided on the entire surface of the dust collecting portion 4, the silicone polymer film contains dust containing conductive components. Since it adheres discontinuously by the micro gap, it can be prevented that a conductive film formed by continuously adhering dust containing a conductive component to the entire surface of the dust collecting portion 4 can be prevented. For this reason, the charges developed on the surfaces of the non-conductive electrode 1 and the fully insulated electrode 2 are not neutralized and disappear, and the electric field in the space provided on both electrodes does not weaken. Even when collected, high dust collection performance can be stably maintained for a long time. In addition, since the silicone polymer has high chemical stability, adhesiveness, and elasticity, it firmly adheres to the surface of the dust collecting portion, and forms a film having elasticity and chemical stability. For this reason, since the silicone polymer film is not peeled off from the dust collecting portion by an external force or eluted by washing such as washing with water, the dust collecting portion 4 having a high and high dust collecting performance can be obtained semipermanently. .

  Insulating resin is mainly used as the sheet-like insulator A7 and the sheet-like insulator B10. However, there is no difference in effect even if other materials such as inorganic materials are used as long as they have insulating properties. .

  In addition, if the completely insulated electrode 2 covers the entire sheet-like conductor 9 and is completely insulated, the effect differs even if other methods such as molding the sheet-like conductor 9 with an insulator are used. Does not occur.

  Further, as a method of providing the sheet-like conductor 9 inside the completely insulated electrode 2, a conductive paint is applied to a narrower area on the sheet-like insulator B10, and the sheet-like conductor is applied to the surface of the conductive paint. Even with the method of bonding the insulator B10, the fully insulated electrode 2 having the same effect can be produced.

  In addition, although resin is mainly used as the material of the porous body 3, even if the porous body 3 made of other materials such as ceramics is used as long as it has an insulating and ventilated space inside, There is no difference in effect.

(Embodiment 2)
FIG. 8 shows a front view of the dust collecting section 4 in which the non-conductive electrodes 1 and the completely insulated electrodes 2 are alternately stacked while sandwiching the corrugated sheet 11 having insulating properties, and different voltages are applied to the respective electrodes. . The corrugated sheet 11 has a wavy shape as shown in FIG. 8, and as the material, an insulating resin such as PP, PET, PBT, or PC is mainly used. As shown in the figure, the corrugated sheet 11 is sandwiched between the nonconductive electrode 1 and the fully insulated electrode 2 so that a space for allowing air to pass between the nonconductive electrode 1 and the fully insulated electrode 2 is regular. It can be provided uniformly in an array. Further, FIG. 8 is a front view of the dust collecting unit 4 which is overlapped in the order of the strip-shaped non-conductive electrode 1, the strip-shaped corrugated sheet 11, the strip-shaped fully insulated electrode 2, and the strip-shaped corrugated sheet 11 and wound in a roll shape. Shown in Thus, the dust collection part 4 which has the same effect can be obtained also by setting it as a roll-shaped structure. The merit of the dust collecting part 4 having a roll-like structure is that the portion connecting the non-conductive electrode 1, the fully insulated electrode 2 and the high-voltage power source 107 is one place for each electrode and can be minimized.

  Further, the corrugated sheet 11 shown in FIG. 8 has a wave shape, but if a space can be provided between the non-conductive electrode 1 composed of the fully-insulated electrode 2 and the sheet-like conductor 9, a triangular shape can be used. Even if it is other shapes such as a shape or a U-shape, there is no difference in effect.

  Moreover, although resin is used as the material of the corrugated sheet 11, the corrugated sheet 11 made of another material such as an inorganic material such as glass fiber is used as long as the corrugated sheet 11 has a shape for providing an insulating and air permeable space. However, there is no difference in the effect.

(Embodiment 3)
In the dust collector 4 in which the nonconductive electrodes 1 and the completely insulated electrodes 2 are alternately stacked and different voltages are applied to the respective electrodes, one row is formed on each side of the nonconductive electrode without electrode terminals, Protruding spacers and protruding spacers 12 protruding on the back side are alternately provided, and the protruding spacers 12 protruding on the front side of each row and the protruding spacers 12 protruding on the back side allow air to pass through the dust collecting portion. A protruding spacer 12 projecting on the front side of the first non-conductive electrode 1 when the non-conductive electrode 1 and the fully insulated electrode 2 are further laminated, The projection spacer 12 projecting on the back side of the non-conductive electrode 1 of the first sheet is projected and overlapped in the stacking direction, and the dust collecting portion 4 in which the projecting spacer 12 is arranged so that the third and subsequent sheets are the same. Front view Are shown in Figure 10 a side view 4 showing a cross section taken along line C-D in FIG. Further, FIG. 11 shows a top view of the nonconductive electrode 1 shown in FIG. 9, and FIG. 12 shows a cross-sectional view taken along the line EF of FIG. Protruding spacers 12 are provided on both sides of the non-conductive electrode 1, and a structure for providing a space for air to pass between the non-conductive electrode 1 and the fully insulated electrode 2 by the protruding spacer 12. It has become. Further, as shown in FIG. 10, the protruding spacer 12 is provided by recessing the sheet-like non-conductive body of the non-conductive electrode 1. When the projecting spacer 12 is provided by recessing the sheet-like non-conductor 5, a recess is formed on the back side thereof, but the projecting spacer 12 is formed in order to be alternately laminated with the completely insulated electrode 2 having a planar shape and no recess. The space provided between the two electrodes is not deformed due to the depression, and a uniform shape can be maintained. Further, as shown in FIG. 11, the protruding spacers 12 are provided in a row other than the portion of the electrode terminal 6 provided along the central portion of the nonconductive electrode 1, that is, on both sides. Further, as shown in FIG. 12, the protruding spacers 12 for each row are provided so that the protrusions are alternately directed in the front side direction and the back side direction, and further on the axis in the direction in which air passes through the dust collecting portion 4. , The protruding spacer 12 facing the front side and the protruding spacer 12 facing the back side are provided at the same position. When both electrodes are stacked, the protruding spacer 12 protruding on the front side of the first nonconductive electrode 1 and the spacer 12 protruding on the back side of the second nonconductive electrode 1 are in the stacking direction. The protruding spacers 12 are arranged so as to overlap in projection and the same for the third and subsequent sheets. With such a structure, even when both electrodes are subjected to pressure during stacking, the protruding spacers 12 do not bend due to the overlapping of the protruding spacers 12 in the stacking direction. Therefore, the space between both electrodes is not distorted or deformed, and high dust collection performance can be ensured. Further, even when the belt-like non-conductive electrode 1 provided with the projecting spacer 12 and the belt-like fully insulated electrode 2 are overlapped and wound in a roll shape, the direction in which air passes through the dust collecting portion 4 When the projection spacer 12 facing the front side and the projection spacer 12 facing the back side are provided at the same position when viewed on the axis in FIG. 2, the pressure received when the laminate structure is wound in a roll shape is dispersed. As a result, the two electrodes are less likely to bend.

  In FIG. 9, the protruding spacer 12 is provided by recessing the sheet-like non-conductive body 5 of the non-conductive electrode 1. For example, the protruding spacer 12 using insulating resin such as PP or glass is used. A similar effect can be obtained by separately providing 12 on both the front and back surfaces of either the non-conductive electrode 1 or the completely insulated electrode 2.

(Embodiment 4)
The same parts as those in Embodiments 1, 2, or 3 are denoted by the same reference numerals, and detailed description thereof is omitted. A non-conductive electrode 1 and a completely insulated electrode 2 are alternately stacked with an insulating spacer interposed therebetween, and a dust collecting device having a dust collecting section 4 and a blowing means 13 in which different voltages are applied to the respective electrodes. An ionization means 17 composed of a discharge electrode 15 and a counter electrode 16 is provided at the air outlet 14, and a negative voltage is applied to the discharge electrode 15 of the ionization means 17 and simultaneously the counter electrode 16 of the ionization means 17 is connected to the ground. The negative ions 18 obtained in this way are supplied into the room, and a positive voltage is applied to either the non-conductive electrode 1 or the fully insulated electrode 2 of the dust collecting section 4 and at the same time a positive voltage is not applied. FIG. 13 shows a dust collector in which the electrodes are connected to the ground. Here, as shown in FIG. 13, the discharge electrode 15 is a needle-like one with a sharp tip, and the counter electrode 16 is a plate-like one. By applying a negative voltage to the discharge electrode 15 and simultaneously connecting the counter electrode 16 to the ground, an extremely strong electric field is generated in the vicinity of the sharp tip of the discharge electrode 15, and the air near the tip of the discharge electrode 15 is ionized. Ionize. Among them, the negative ions 18 which are said to have a relaxation effect are released so as to be repelled from the discharge electrode to which a negative voltage is applied, and are supplied to the room by riding on the wind by the air blowing means 13. At this time, the position of the counter electrode 16 connected to the ground is not particularly limited as long as the discharge electrode 15 causes discharge, but the position where the generated negative ions 18 are not absorbed, that is, not immediately downstream of the discharge electrode 15. Is desirable. Further, when discharge is caused by the ionization means 17, a discharge current flows between the discharge electrode 15 and the counter electrode 16. However, the dust collection performance can be obtained only by weakly charging the dust in the room air. It is possible to set the discharge current to 1 μA / m ³ or less per blown air volume by designing the dust part voltage, electrode spacing, and dimensions, and the amount of ozone that is generated by discharge and harms the human body is reduced. Can be zero. By supplying negative ions 18 into the room in this way, the indoor occupant is provided with a relaxation effect, and at the same time, the dust in the room is weakly charged by the discharge that does not generate ozone, and the charged dust is taken into the dust collector 4. Can be collected. In addition, by applying a positive voltage to either the non-conductive electrode 1 or the fully insulated electrode 2 of the dust collector 4, the dust collector body can be easily charged positively, and negatively charged dust can be removed. It is possible to obtain higher dust collection performance by moving closer to the main body.

  Although the needle-like discharge electrode 15 is used, there is no difference in the effect even if it has other shapes such as a spine or a wire as long as it can generate a discharge.

  Further, although the plate-like counter electrode 16 is used, the same effect can be obtained even in other shapes such as a rod shape or a nail shape as long as the discharge electrode can cause discharge.

(Embodiment 5)
The same parts as those in the first, second, third, or fourth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The experimental results of evaluating the dust collection efficiency of the dust collector having the dust collector 4 shown in the second embodiment will be shown below. As shown in FIG. 14, an experimental device is created in the order where the charging unit 108, the dust collecting unit 4, and the blowing unit 13 are installed in the order from the upstream side using a duct in a laboratory where temperature and humidity can be controlled. The air blowing means 13 was set so as to be 4 m / s, and the dust collection efficiency was obtained. Then, using a particle counter KC18 made by Lion, dust having a particle diameter of 0.1 μm or more contained in the air upstream of the charging unit 108 and downstream of the dust collecting unit 4 is measured, and the dust collection efficiency is calculated using the following formula: Was calculated.

η = (1−Cin / Cout) × 100
η: dust collection efficiency (%), Cin: dust concentration on the upstream side of the charged part (pieces / L), Cout: dust concentration on the downstream side of the dust collection part (pieces / L)
The charging unit 108 used in the experiment has three linear electrodes 109 made of tungsten having a diameter of 80 μm installed horizontally in an ABS box having a width of 100, a height of 50 mm, and a depth of 25 mm. A plate in which four counter electrode plates 110 were installed at an interval of 16 mm so as to be positioned at the center of the electrode 109 was used. A voltage of about 4 kV is applied to the linear electrode 109, the counter electrode plate 110 is connected to the ground, and when evaluating at a temperature and humidity of 20 ° C. and 40% RH, 5 μA, and when evaluating at 30 ° C. and 80% RH, 10 μA. Corona discharge was caused so as to obtain a discharge current, and the dust passing through the charging unit 108 was charged. Here, FIG. 15 shows the structure of the dust collector 4 of the embodiment, and FIG. 16 shows the structure of the dust collector 4 of the comparative example. The parts used to create the dust collection unit 4 are as follows. A sheet-like insulator B10 made of a strip-like PET film having a thickness of 50 μm and a width of 30 mm is adhered to both surfaces of a sheet-like conductor 9 made of a strip-like aluminum foil having a thickness of 15 μm and a width of 20 mm, and completely covered with an adhesive. This was prepared and used as a fully insulated electrode 2. Also, a non-stretched nylon strip-shaped non-conductor 5 having a thickness of 80 μm and a width of 30 mm provided with an electrode terminal 6 made of a strip-shaped aluminum foil having a thickness of 50 μm and a width of 10 mm at the center in the width direction. Was used as the non-conductive electrode 1. Further, a corrugated sheet 11 made of a non-stretched PBT sheet having a width of 30 mm and having a peak height of 1.67 mm and a corrugated corrugated shape was used. The mountain height here means the distance in the height direction between the apex of the downward mountain and the apex of the upward mountain located next to it. A strip-shaped aluminum foil having a thickness of 50 μm and a width of 30 mm was used as the electrode 19 made of a sheet-like conductor. The dust collecting part 4 of the example is a belt-like non-conductive electrode 1, a belt-like corrugated sheet 11, a belt-like fully insulated electrode 2, and a belt-like corrugated sheet 11 which are wound in a roll shape. The silicone polymer is immersed in a silicone polymer solution dissolved in cyclohexane and dried, and the entire surface of the dust collecting portion 4 is provided with a silicone polymer film. Further, as shown in FIG. 14, the dust collecting portion 4 of the comparative example is overlapped in the order of the strip-shaped fully insulated electrode 2, the strip-shaped corrugated sheet 11, the electrode 19 made of a sheet-shaped conductor, and the strip-shaped corrugated sheet 11. Although not shown in the drawing, a fluororesin film is provided on the entire surface of the roll. In addition, all the dust collection parts 4 used for evaluation as a comparative example and an Example were created with the dimension shown in FIG. In the experiment, the electrode 19 made of a sheet-like conductor and the non-conductive electrode 1 are connected to the ground in each dust collecting portion 4, and a voltage of 4 kV is applied to the fully insulated electrode 2 in each dust collecting portion. Thus, a potential difference of 4 kV was given between both electrodes in each dust collecting section 4.

  In the experiment, when the dust collecting unit 4 is low humidity (20 ° C., 40% RH) and not contaminated with cigarette smoke, and high humidity (30 ° C., 80% RH), and dust is collected by collecting cigarette smoke. We evaluated how the dust collection efficiency changes under the two conditions of time. Specifically, a new dust collecting unit 4 was incorporated in the experimental apparatus, and the dust collection efficiency was measured in a laboratory controlled at 20 ° C. and 40% RH. After that, the dust collector equipped with the charging unit 108, the dust collecting unit 4 and the air blowing means 13 is assembled and operated while burning a total of 40 cigarettes in an acrylic box having a volume of 0.5 cubic meter to emit cigarette smoke. After collecting the dust, the dust collection part was brought into the laboratory where the temperature and humidity were controlled at 30 ° C. and 80% RH, and incorporated in the experimental apparatus to obtain the dust collection efficiency.

  Table 1 shows the specifications of the dust collector 4 that was evaluated, the dust collection efficiency, and other measurement results. Dust collection efficiency under the conditions of 0 cigarette smoke and 20 ° C. and 40% RH is 99.5% in the dust collection part 4 of the comparative example and 99.1% in the dust collection part 4 of the example, both of which are high in dust collection. Showed performance. Next, after collecting the smoke of 40 cigarettes and evaluating the dust collection efficiency under the temperature and humidity conditions of 30 ° C. and 80% RH, the dust collection part 4 of the comparative example was 48.5%. On the other hand, the dust collection part 4 of an Example was 81.5%, and it turned out that it has a dust collection performance higher than the dust collection part 4 of a comparative example on inferior conditions. Although the dust collecting part 4 of the comparative example is provided with a fluororesin film on the entire surface, if a large amount of smoke from 40 cigarettes is collected, even if the fluororesin film can repel moisture, The dust containing the conductive component contained in the smoke adheres so as to cover the entire surface of the dust collecting portion 4. Therefore, a conductive film is formed on the surfaces of the completely insulated electrode 2 and the corrugated sheet 11, and the dust collection efficiency is greatly reduced. That is, it was found that even if the surface of the fully insulated electrode 2 or the corrugated sheet 11 was given only water repellency to the surface, the dust collection performance deteriorated by collecting a large amount of tobacco smoke. On the other hand, the dust collection part 4 of an Example uses the nonelectroconductive electrode 1 which provided the electrode terminal 6 along the center part, and simultaneously provides a silicone polymer film | membrane on the whole surface of the dust collection part 4, The transfer of charges from the terminal 6 to the surface of the sheet-like insulator B10 of the fully insulated electrode 2 can be prevented by the sheet-like nonconductor 5 serving as a buffer band, and at the same time, the formation of a conductive film can be achieved. Since the charge generated on the surfaces of the non-conductive electrode 1 and the completely insulated electrode 2 is prevented from moving and disappearing, the dust collection efficiency is improved even if 40 cigarette smoke is collected. It was found that the decrease can be reduced. In addition, the capacitance measured between the two electrodes constituting the dust collection unit 4 is 0.33 nF in the dust collection unit 4 of the comparative example, whereas it is 0. 0 in the dust collection unit 4 of the example. The capacitance was 23 nF, which was lower than that of the dust collecting portion 4 of the comparative example. When the electrostatic capacity is large, a large noise is generated when the non-conductive electrode 1 and the completely insulated electrode 2 are short-circuited at the terminal portion or the like. However, the dust collecting unit 4 of the embodiment makes such a large noise smaller. It has a structure that can do. In addition, when the sheet-like insulator B10 of the completely insulated electrode 2 causes dielectric breakdown, it becomes impossible to apply a voltage to the dust collecting portion 4 and the function as the dust collecting portion 4 cannot be performed. 4 is a space between the non-conductive electrode 1 and the fully-insulated electrode 2 by sandwiching an insulating spacer such as a corrugated sheet 11 or by providing a protrusion by recessing the non-conductive sheet. Therefore, the electrode terminal 6 of the non-conductive electrode 1 and the sheet-like conductor 9 provided inside the fully-insulated electrode 2 are not adjacent to each other with the sheet-like insulator B10 interposed therebetween. Therefore, the sheet-like insulator B10 of the completely insulated electrode 2 does not cause dielectric breakdown, and the function of the dust collecting portion 4 can be maintained semipermanently.

  Next, as shown in the fourth embodiment, the negative ion is supplied to the room from the air outlet by the ionization means, the dust is charged in the room, and then taken into the dust collecting part to collect the dust. The results of measuring the dust collection capacity of the device are shown below. A diagram showing the state of the experiment is shown in FIG. After burning five cigarettes in the room to be experimented and generating dust, the dust collector is operated to remove dust contained in the room air. The dust concentration at that time was measured with a digital dust meter LD3 manufactured by Shibata Kagaku every minute, and the dust collection ability P was obtained from the following equation using the decay rate of the dust concentration and the size of the room.

P = −V / t (ln (Ct1 / C01) −ln (Ct2 / C02))
P: Dust collection capacity (m ³ / min), V: Room volume (m ³ ), Ct1: Dust concentration (mg / m ³ ) after t minutes when the dust collector is operated and tested, C01: Dust concentration after 0 minute (mg / m ³ ) when testing by operating the dust collector, Ct2: Dust concentration (mg / m ³ ) after t minute when the dust collector is not operated, C02: Collection Dust concentration after 0 minutes when tested without operating the dust device (mg / m ³ )
The following relational expression is theoretically established by the dust collection efficiency and the dust collection capacity.

η = P / Q
Q: Air volume of the dust collector (mg / m ³ )
The dust collection capacity P is an index of how much air that does not contain dust can be produced per unit time. If the air flow rate Q (mg / m ³ ) is the same value, the dust collection efficiency is theoretically 100%. Here, the structure of the dust collection section of the example used in the experiment and the dust collection section of the comparative example are the same as those used in the experiment for measuring the dust collection efficiency described above, but different from the previous experiment. It is created with the dimensions shown in FIG. During the operation of the dust collector, the air blowing means 13 is activated to take in air, and at the same time, -8 kV is applied to the discharge electrode 15 of the ionization means 17 provided at the outlet 14 and the counter electrode 16 is connected to the ground. Negative ions are supplied from the outlet to the room. At the same time, air is taken in and dust is collected by the dust collector 4, and at the same time as applying +6 kV to the fully insulated electrode 2 of the dust collector 4, the non-conductive electrode 1 is used in the dust collector of the embodiment. In the dust collection portion of the comparative example, an electric field for collecting charged dust is provided by connecting the electrodes 19 made of sheet-like conductors to the ground. Table 2 shows the measurement results of the dust collection capacity when the room temperature and humidity are 20 ° C. and 40% and at 32 ° C. and 60%.

  The dust collecting part 4 of the comparative example showed a high dust collecting ability when the room temperature and humidity were 20 ° C. and 40%, but the dust collecting ability decreased at a temperature and humidity of 32 ° C. and 60%. This is because the amount of moisture contained in the air increases as the temperature and humidity increase, and the electric charge easily propagates through the surface of the dust collecting portion, so that the sheet 19 of the fully insulated electrode 2 is formed from the electrode 19 made of a sheet-like conductor. This is because the electric charges appearing on the surface of the insulator B and neutralized on the surface of the sheet-like insulator B are eliminated. On the other hand, the dust collection part 4 of an Example showed the high dust collection capability at both temperature and humidity. This is because the silicone polymer film makes it difficult for the charge to propagate through the surface of the dust collection part even if the moisture in the air increases, and at the same time, the electrode terminal of the non-conductive electrode is provided along the center part. This is because the sheet-like non-conductors on both sides prevent the movement of electric charges to the surface of the sheet-like insulator B like a buffer band. Thus, also in the dust collector shown in Embodiment 4, it turned out that the dust collection part of an Example shows the high and stable performance. Further, the electrostatic capacity is 6.74 nF in the dust collecting unit 4 of the comparative example, whereas it is 3.09 nF in the dust collecting unit 4 of the example. It was found that the electric capacity can be kept low, and the noise generated when a short circuit should occur can be reduced.

  In these two experiments, a high voltage is applied to the fully insulated electrode and the nonconductive electrode 1 is connected to the ground. However, a high voltage is applied to the nonconductive electrode and the fully insulated electrode is grounded. It has been confirmed that the same dust collection performance can be obtained even when connected to the.

  The dust collector of the present invention has a simple structure and can be manufactured at a low cost, achieves high dust collection performance while reducing failures and obstacles in the dust collector, and is also used when the humidity is high or the dust collector is dusty. Since it has the effect that a stable and high dust collection performance can be obtained semi-permanently even when it is collected and soiled, it is useful as an application for improving the air environment not only indoors but also outdoors.

  The air conditioner equipped with the dust collector of the present invention achieves high dust collection performance while reducing failures and obstacles of the dust collector, and is stable even if the dust collector collects dust and becomes dirty. It has the effect that high dust collection performance can be obtained semipermanently, and is useful as an application for providing a clean indoor space while performing air conditioning such as indoor air conditioning and humidity control.

The block diagram which shows the front of the dust collection part as described in Embodiment 1 of this invention The block diagram which shows the cross section seen from the side of the dust collection part Configuration diagram showing the top surface of the non-conductive electrode The block diagram which shows the side cross section of the nonelectroconductive electrode comprised by the sheet-like nonconductor and the electrode terminal The block diagram which shows the side cross section of the nonelectroconductive electrode comprised by the sheet-like insulator A, the semiconductive layer, and the electrode terminal Configuration diagram showing the top surface of the fully insulated electrode Configuration diagram showing a side cross-section of the fully insulated electrode The block diagram which shows the front of the dust collection part as described in Embodiment 2 of this invention The block diagram which shows the front of the dust collection part as described in Embodiment 3 of this invention The block diagram which shows the cross section in the CD line of the dust collection part Configuration diagram showing the top surface of the non-conductive electrode The block diagram which shows the cross section in the EF line | wire of the nonelectroconductive electrode The block diagram which shows the dust collector as described in Embodiment 4 of this invention The figure which shows the laboratory which measures the dust collection efficiency as described in Embodiment 5 of this invention The block diagram which shows the front of the dust collecting part shown as the Example The block diagram which shows the front of the dust collecting part shown as the comparative example Dimensional drawing showing the dust collector used to measure the dust collection efficiency Figure showing an experiment to measure the dust collection capacity Dimensional drawing showing the dust collector used to measure the dust collection capacity Configuration diagram showing electrode plate of conventional electrostatic precipitator The block diagram which shows the cross section in the AB line | wire of the same electrode plate The block diagram which shows the dust collection part of the conventional electric dust collection type dust collector Configuration diagram showing another conventional electric dust collector Configuration diagram showing the front of the dust collector The block diagram which shows the dust collection part of other conventional electric dust collection type dust collectors

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nonelectroconductive electrode 2 Complete insulation type electrode 3 Porous body 4 Dust collection part 5 Sheet-like nonconductor 6 Electrode terminal 7 Sheet-like insulator A
8 Semiconductive layer 9 Sheet-shaped conductor 10 Sheet-shaped insulator B
DESCRIPTION OF SYMBOLS 11 Corrugated sheet 12 Protruding spacer 13 Air blowing means 14 Air outlet 15 Discharge electrode 16 Counter electrode 17 Ionizing means 18 Negative ion 19 Electrode which consists of sheet-like conductors

Claims (29)

Alternately, a fully insulated electrode in which the entire sheet-shaped conductor is covered with an insulator and a non-conductive electrode in which an electrode terminal is provided on any part of the sheet-shaped non-conductive material, with an insulating spacer interposed therebetween A dust collecting device, wherein a dust collecting unit is formed by stacking, and different voltages are applied to each of a completely insulated electrode and a non-conductive electrode. The dust collector according to claim 1, wherein an electrode terminal is provided along a central portion of the non-conductive electrode. The dust collector according to claim 1 or 2, wherein the insulating spacer is a porous body having a three-dimensional network structure. The dust collector according to claim 1 or 2, wherein the insulating spacer is a corrugated sheet. Protruding spacers on both the front and back of either side of either a fully-insulated electrode with the entire sheet-shaped conductor covered with an insulator or a non-conductive electrode with electrode terminals on any part of the sheet-shaped non-conductive body A dust collecting device characterized in that a dust collecting section is formed by alternately laminating fully insulated electrodes and non-conductive electrodes, and different voltages are applied to each of the fully insulated electrodes and the non-conductive electrodes. . The protrusion-like spacer is provided by recessing the sheet-like non-conductor on both sides of the non-conductive electrode provided with the electrode terminal along the center of the sheet-like non-conductor. 5. A dust collector according to 5. Laminated spacers and non-conductive electrodes are stacked in a row on both sides of the non-conductive electrode without electrode terminals, with protruding spacers protruding on the front side and spacers protruding on the back side alternately. In this case, the protruding spacer protruding on the front side of the first nonconductive electrode and the spacer protruding on the back side of the second nonconductive electrode projectably overlap in the stacking direction, and the third and subsequent sheets. The dust collecting device according to claim 5, wherein a protruding spacer is disposed so as to be the same. Protruding spacers that protrude on the front side and spacers that protrude on the back side are alternately provided on both sides of the non-conductive electrode without electrode terminals. Are provided on the same axis in a direction in which air passes through the dust collecting portion. The dust collector according to any one of claims 1 to 8, wherein the insulator and the insulating spacer in the fully insulated electrode are made of an insulating resin. The dust collector according to any one of claims 1 to 9, wherein the surface of the sheet-like non-conductor in the non-conductive electrode is semiconductive. The dust collector according to claim 10, wherein the sheet-like non-conductor in the non-conductive electrode is made of a semi-conductive resin. 11. The dust collector according to claim 10, wherein a sheet-like insulator provided with a semiconductive resin is used as a sheet-like non-conductor of a non-conductive electrode. 11. The dust collector according to claim 10, wherein a sheet-like insulator coated with a semiconductive paint is used as a sheet-like non-conductor of a non-conductive electrode. The dust collector according to any one of claims 1 to 13, wherein a belt-like fully insulated electrode and a non-conductive electrode similarly made into a belt are overlapped and wound into a roll shape. 15. The dust collecting apparatus according to claim 1, wherein a silicone polymer film is provided on the surface of the fully insulated electrode or the entire dust collecting portion. 16. The dust collector according to claim 15, wherein as a method of providing a silicone polymer film on the entire dust collecting portion, the dust collecting portion is immersed in a silicone polymer solution and then dried. The dust collector according to claim 16, wherein a nonpolar organic solvent is used as a solvent for the silicone polymer solution. The dust collector according to any one of claims 1 to 17, wherein an antibacterial agent having an antibacterial action is attached to the dust collector. 19. The dust collector according to claim 18, wherein the antibacterial agent is a titania or silica alumina in which a silver component is fixed. The dust collector according to any one of claims 1 to 17, wherein an antifungal agent having an antifungal action is attached to the dust collecting portion. The dust collector according to any one of claims 1 to 17, wherein an antiviral agent having a virus inactivating action is attached to the dust collector. The dust collector according to claim 21, wherein the antiviral agent is a polyphenol having a phenolic hydroxyl group in the molecular structure. The dust collector according to any one of claims 1 to 17, wherein an antiallergen agent having an allergen inactivating action is attached to the dust collector. 24. The dust collector according to claim 23, wherein the anti-allergen agent is an aromatic hydroxy compound having a phenolic hydroxyl group at least in one place. The dust collector according to any one of claims 1 to 17, wherein a liquid mixed with a drug having antibacterial, virus inactivating and allergen inactivating actions is collectively attached to the dust collecting section. 26. The dust collector according to claim 1, wherein ionization means is provided on the windward side of the dust collector. 26. An ionization means for supplying ionized air into a room and charging the dust in the room weakly is provided at the outlet of a dust collector equipped with a dust collecting section and a blowing means. The dust collector described in 1. An ionization means composed of a discharge electrode and a counter electrode is provided at the outlet of a dust collector equipped with a dust collection portion and a blower means, and a negative voltage is applied to the discharge electrode of the ionization means at the same time as the counter electrode of the ionization means The negative ions obtained by connecting to the ground are supplied to the room, and a positive voltage is applied to either the fully insulated electrode or the non-conductive electrode of the dust collector at the same time as the other. 28. The dust collector according to claim 27, wherein the electrode is connected to ground. An air conditioner comprising the dust collector according to any one of claims 1 to 28.

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