JP5585399B2 - Ion generator - Google Patents

Description

  The present invention relates to an ion generator for sterilizing and deodorizing indoor spaces.

  In recent years, active species such as ions and radicals (hereinafter referred to as ions) are supplied to the air to suppress bacteria in the air (sanitization), or to decompose and remove odors in the air (deodorization). Has been developed for the purpose of air purification and is widely used in ordinary households. Here, an ion generator as described in Patent Document 1 has been devised for the purpose of installation on the ceiling.

JP 2006-230706 A

  The ion generator described in Patent Document 1 has a structure in which the generated ions are placed on an airflow and flow downward, but in this case, the ions are supplied only to the space immediately below, and the corner of the room It has a problem that it cannot be supplied in a wide range.

  In addition, since ions are unstable and have a short lifetime, they have a problem that they disappear before being supplied far.

  In addition, the blower and the flow path for flowing the air flow downward are large in the height direction, and there is a problem that it is difficult to attach the ceiling to a ceiling having a limited height dimension.

  Therefore, the ion generator of the present invention is thin and can be easily installed on the ceiling. In addition to supplying long-lived ions over a wide range to clean the air to every corner of the room, it also prevents bacteria and odors from adhering to the substance. It is intended to be removed.

In order to achieve this object, the ion generating device of the present invention, embedding the body in the ceiling, an ion generating device for generating ions from the ceiling surface, the body, the partition Ri within a cylindrical body case comprising a plate, a blower unit on side of the partition Ri plate, and an electrostatic atomizing means in an opening through said partition Ri plate, a grill having a body case inlet and air outlet at the lower end of the The electrostatic atomizing means is composed of a Peltier element, an atomizing part composed of a discharge electrode and a counter electrode in contact with the cooling surface of the Peltier element, and a cooling fin in contact with the heat radiating surface. The intended purpose is achieved by creating a swirling airflow by providing a path and blowing the swirling airflow applied to the cooling fins diagonally downward from the outlet to the left and right.

  The ion generating apparatus of the present invention can be installed on the ceiling without being used behind the ceiling, and supplies long-lived ions to not only clean the air in every corner of the room but also removes bacteria and odors of substances. be able to.

The figure which shows the generation | occurrence | production principle of the water covering ion in the atomization part of the electrostatic atomization means of this invention Configuration diagram of the ion generator Configuration diagram showing the lower half of the ion generator Configuration diagram showing the upper half of the ion generator Assembly drawing of the ion generator Configuration diagram showing the grill The figure which shows the water covering ion concentration of each surface in the room by the same ion generator

  Hereinafter, the present embodiment will be described with reference to the drawings.

(Embodiment 1)
The principle of generation of water-covered ions in the electrostatic atomization means of the present invention is shown in FIG.

  The electrostatic atomizing means 1 includes an atomizing section 6, a Peltier element 7 which is a kind of thermoelectric element, and a cooling fin 8 for cooling the Peltier element. Further, the atomizing portion is composed of a discharge electrode 2 having a spherical tip and a ring-shaped counter electrode 3 having a hole in the center, and the discharge electrode 2 is joined to the cooling surface of the Peltier element 7.

  At this time, the cooling fins in contact with the heat radiating surface are cooled to release the heat generated on the heat radiating surface, and the cooling performance of the cooling surface of the Peltier element 7 is ensured. Then, the discharge electrode 2 is cooled by the Peltier element 7 so as to be equal to or lower than the dew point temperature, thereby generating condensed water at the tip of the discharge electrode 2.

  Specifically, when a high voltage power supply 9 is connected and a voltage of about −3 to −5 kV is applied to the discharge electrode 2 and 0 kV is applied to the counter electrode 3 with condensed water at the tip of the discharge electrode 2, The electric charge concentrates on the tip of the condensed water attracted to the counter electrode 3 and attracted.

  The tip of the condensed water lacks enough surface area to hold a concentrated charge and breaks up into fine water particles with a diameter of a few nanometers to increase the surface area. The split water particles fly toward the counter electrode 3 along the direction of the electric field, pass through a hole in the center of the counter electrode 3, and flow out to the outside of the electrostatic atomizing means 1.

  By this phenomenon, the tip of the dew condensation water has a sharp shape like a needle. This condensed water having a pointed tip shape is called a Taylor cone 4. Here, the tip of the discharge electrode 2 needs to have a certain surface area or more in order to obtain the amount of condensed water necessary for creating the Taylor cone 4. Therefore, it has a spherical shape with a radius of about 0.1 to 1 mm.

  Electric charges concentrate on the sharp tip of the Taylor cone 4. Therefore, corona discharge occurs between the counter electrode 3. In the vicinity of the tip of the Taylor cone 4, water and oxygen molecules contained in the air are decomposed by corona discharge, and active species having a strong oxidative decomposition action such as OH radicals are generated. The active species are covered with the water particles described above. This is called water-covered ions 5.

  Active species such as OH radicals are chemically unstable and bind to nitrogen and sulfur components contained in the air, oxidize them and decompose themselves to disappear. Since this process occurs in a few microseconds, the lifetime of the active species when present alone is very short.

  However, the active species contained in the water-coated ions 5 are protected by fine water particles, and thus have a very long life of about 600 seconds. During the long lifetime, the water-covered ions 5 adhere to odors and airborne bacteria in the air, or odors and bacteria present on the wall surface and floor surface, and can be decomposed and sterilized.

  Next, the structure of the whole main body of the ion generator 27 is demonstrated using FIG. 2, 3, 4, 5 and FIG. FIG. 2 shows a configuration viewed from diagonally below with the ion generator 27 installed on the ceiling, and FIG. 3 shows a configuration viewed from diagonally below the ion generator 27 taking the grill 11 of FIG. FIG. 4 shows a configuration in which the mounting cross section of the partition plate 18 of FIG. 3 is viewed obliquely from below. FIG. 5 is an assembly diagram of the ion generator 27.

  As shown in FIG. 5, the components inside the main body case 10 are arranged from below from the grill 11, the atomizing part cover 19, the atomizing part 6, the partition plate 18 for separating the atomizing part 6 from the main air flow path, and the cooling fins. 8. The sirocco fan 23 is laid sideways and the suction is directed downward.

  In addition, a control box 16 containing a control board with a reduced height is provided on the main body case 10 so as to reduce the overall height (the width and depth are larger than the main body case 10). Yes.

  The structure of the grill 11 is shown in FIG. The grill 11 has a main body outlet left 13 and a main body outlet right 25 on the left and right, respectively, and an internal duct 26 for sending air is connected to each outlet. For example, as shown in FIG. 6, the internal duct 26 has a shape that fills the inside of the dome, collects the swirling airflow that has flowed through the main air flow path in the dome, and the swirling airflow. Has a function of changing the direction of the head to a diagonally downward direction by the Coanda effect.

  After joining the main body case 10 and the fixing ring 14 having the plate 15 having the spring property, the main body case 10 is fitted into the ceiling hole, and is fixed to the ceiling by using a force spreading to the side of the plate 15 having the spring property.

  In the above configuration, when the main air flow path 17 shown in FIG. 2 is followed from the upstream side, the sirocco fan 23 sucks room air through the main body inlet 12 at the center of the grill as shown in FIG. 2 and FIG. Air is sent out from the outlet 24. The sent-out air flows through the main air flow path 17 that draws a spiral and swirls in the main body case 10 along the inner wall. Then, the cooling fin 8 is cooled by hitting the cooling fin 8 protruding above the partition plate 18. Here, since air is sucked into the ion generator main body from the suction port provided at the center of the grill 11, compared to the case where the air is sucked from the outside of the grill 11, the ratio of the dust contained in the air adhering to the ceiling becomes higher. Can be small.

  Further, as shown in FIG. 3, in order to supply water-covered ions 5 into the room while preventing dust from adhering to the atomizing section 6, a part of the air flowing through the main air flow path 17 is covered by the atomizing section cover. A sub air flow path 22 for entering and exiting 19 and joining the main air flow path 17 is provided.

  Specifically, the upstream bypass hole 20 and the downstream bypass hole 21 are provided in the partition plate 18 positioned in front of and behind the electrostatic atomizer 1. In this way, part of the air flowing through the main air flow path 17 passes through the upstream bypass hole 20 and is sent into the atomizing section cover 19. The air sent into the atomizing unit cover 19 flows through the sub air flow path 22 in the atomizing unit cover 19, and the water-covered ions 5 generated by the atomizing unit 6 filling the atomizing unit cover 19. While being included, it merges with the main air flow path 17 through a downstream bypass hole 21 provided at a position behind the electrostatic atomizing means 1.

  In this way, the air containing water-covered ions flows through the main air flow path 17 so as to swirl in the main body case 10 and, when the main body is viewed from the side, is directed diagonally downward to the left and right. Then, it is sent out indoors from the main body outlet left 13 and the main body outlet right 25. At this time, the airflow swirling in the main body case 10 is guided to the left and right internal ducts 26 and the direction of the airflow is changed diagonally downward by the internal ducts 26, and then from the main body outlet left 13 and the main body outlet right 25. Air is sent out diagonally downward from left to right.

  In this way, the water covering ions 5 having a long lifetime are generated, and the generated water covering ions 5 are sent obliquely downward from the main body outlet left 13 and the main body outlet right 25 to spread the water covering ions to every corner of the room. Thus, the ion generator of the present invention can decompose and remove floating bacteria and odor contained in the air in the room, and further decompose and remove bacteria and odor adhering to the wall and floor in the room.

  In addition, the sirocco fan 23 is placed on its side, and at the same time, the long main air flow path 17 that draws a spiral is obtained, so that it can be made thin.

  Here, when dust adheres to the atomization part 6, it adheres to the discharge electrode 2 and the counter electrode 3, the space insulation distance between electrodes and a creeping insulation distance shrink | contract, and it electrically short-circuits, and cannot discharge. Occur. In order to prevent dust from entering the atomizing part cover 19 in which the atomizing part 6 exists, a main air flow path that draws a spiral between the upstream bypass hole 20 and the downstream bypass hole 21 provided in the partition plate 18. 17 is provided inside the center line. By doing so, it is possible to take in the air, which is removed by the dust being attracted to the outside by the centrifugal force, into the atomizing portion cover 19 and to prevent the dust from adhering to the atomizing portion 6.

  Here, the ion generator of the present invention has a structure in which only the cooling fins 8 of the electrostatic atomizing means 1 are exposed to the main air flow path 17 by providing the partition plate 18. By doing so, a large amount of air hits only the cooling fins 8 and the cooling effect can be enhanced.

  Further, the grill 11 having the main body inlet 12, the main body outlet left 13 and the main body outlet right 25 is a component that can be seen from the ceiling. This can be prevented by performing antistatic processing on the grill 11. Here, for the antistatic processing, a method such as molding with a resin containing a surfactant or a permanent antistatic agent, or coating the surface with an antistatic agent can be selected.

  Further, when the control base is to be stored inside the main body case 10, the main body case 10 is round and the shape of the control base does not match the square, so there is a possibility that the control base cannot be stored unless the control base is multi-layered. When it is made multilayer, the height dimension becomes large and it cannot fit in the ceiling. Here, by providing the control box 16 separately on the main body case 10, the height can be set so that the control box 16 can be stored in the ceiling of a limited height.

  Further, since the fixing ring 14 including the plate 15 having the spring property and the main body case 10 are joined and then fixed by being fitted into the ceiling hole, it can be easily installed in any ceiling hole. That is, it can be easily installed in a hole for another ceiling-mounted device such as a downlight.

Here, when air is blown out in the diagonally left and right direction, the calculation means based on the finite element method is used to analyze how uniformly the water-covered ions contained in the air can diffuse into the room. It was. The analysis conditions were such that the room size was 27 m ³ , the amount of blown air was 0.75 m ³ / min, and the direction of the blown air was in the range of 30 ° to 50 ° diagonally downward from the ceiling. The ion generator 27 is installed at the center of the ceiling of the room. The results are shown in FIG.

  As shown in FIG. 7, after 20 minutes from the start of operation, the variation in the average value of each surface was smaller than after 10 minutes, and water-covered ions were uniformly distributed over most areas of the room. As a result of this analysis, it was found that water-covered ions can reach every corner of the room by blowing air in the diagonally downward direction.

  As described above, the ion generator of the present invention is attached to the ceiling to supply ions to every corner of the room, not only to disinfect and deodorize air across every corner of the room, but also across every corner of the room. Since it is possible to sterilize adherent bacteria on the walls and floors and to deodorize the attached odor, it is useful for creating a clean living space. In addition, it is useful for suppressing the growth of bacteria in non-residential spaces such as closets, baths, toilets, warehouses, etc., and removing unpleasant odors to create comfortable spaces, making people comfortable and healthy living. It can be expected to be used greatly as something that contributes to

DESCRIPTION OF SYMBOLS 1 Electrostatic atomization means 2 Discharge electrode 3 Counter electrode 4 Taylor cone 5 Water covering ion 6 Atomization part 7 Peltier element 8 Cooling fin 9 High voltage power supply 10 Main body case 11 Grill 12 Main body inlet 13 Left main body outlet 14 Fixed ring 15 Spring plate 16 Control box 17 Main air flow path 18 Partition plate 19 Atomization part cover 20 Upstream bypass hole 21 Downstream bypass hole 22 Sub air flow path 23 Sirocco fan 24 Sirocco fan outlet 25 Main body outlet Mouth right 26 Internal duct 27 Ion generator

Claims (10)

Embedding body in the ceiling, an ion generator that generates ions from the ceiling surface, the body includes a partition Ri plate in a cylindrical body casing, and the partition Ri blowing means above side plate, Ri said partition An electrostatic atomizing means is provided in an opening penetrating the plate, and a grille having a suction port and a blowout port at a lower end of the main body case, and the electrostatic atomizing means is in contact with a Peltier element and a cooling surface of the Peltier element. Consists of an atomizing section consisting of a discharge electrode and a counter electrode, and a cooling fin in contact with the heat dissipation surface. A spiral air flow path is provided in the body case to create a swirling airflow, and a swirling airflow applied to the cooling fin is blown out An ion generator characterized in that it blows out from the mouth in a diagonally downward direction. The ion generator according to claim 1, wherein the grille has the suction port at the center, and the blowout ports on the left and right sides of the suction port. Sending means ion generator according to any of claims 1 or 2 characterized in that it is a sirocco fan. The atomization unit of the electrostatic atomizing means under the partition plate, and an ion generator according to any of claims 1 to 3, wherein placing the cooling fins above the partition plate. The ion generation according to any one of claims 1 to 4 , wherein the atomizing portion of the electrostatic atomizing means is covered with a cover, and a bypass hole to the atomizing portion of the electrostatic atomizing means is provided in the partition plate. apparatus. The ion generator according to claim 5, wherein the bypass hole of the partition plate is provided inside the center line of the air passage. The ion generating apparatus according to any one of claims 1 to 6 grill, characterized in that antistatic processing is given. The ion generating apparatus according to the control box to pay controller to any one of claims 1 to 7, characterized in that disposed above the main body case. The ion generating apparatus according to any one of 請 Motomeko 1 to 8 shaped plate of inverted tooth you characterized in that provided on the outside of the main body case having a spring property. The ion generator according to any one of claims 1 to 9 , wherein the main body case has a size that can be accommodated in a casing ceiling hole of a downlight.

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