JP2009127872A - Ion supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ion supply device capable of protecting an ion emission face of an ion generator. <P>SOLUTION: An air supply grille 1A comprises a space forming portion 51 forming a space 51a having wind passage forming openings 52 on front and back faces along an air flow at a front part of the ion emission face 30 of the ion generator 3 in opposition to the ion emission face 30. Thus, the supply of ions to the air passing through a pipe 2 is not blocked, and the ion emission face 30 of the ion generator 3 can be protected by the space forming portion 51. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an ion supply device that supplies ions into a room by an air flow in an air passage.

  As a ventilation device installed in a house, etc., a ventilation device main body that supplies and exhausts air is installed behind the ceiling, and an air supply grill is installed in each room, and the ventilation device main body and the air supply grill are connected by a duct through which air passes. Therefore, a ventilation system that can ventilate each room has been proposed.

  In such a ventilation system, an ion generating element for generating ions is provided in an air supply grille, and an ion supply device is configured by the air supply grille so that ions can be supplied to a room where the air supply grille is installed. Technology has been proposed.

  As a conventional air supply grill provided with an ion generating element, an air supply grill is proposed in which an ion generating element is attached so as to protrude outward in the radial direction of a pipe portion connected to a duct (for example, see Patent Document 1). ).

  In the conventional air supply grille, the ion generating element is attached to the storage portion with the ion emitting surface facing the inner peripheral surface of the tube portion, and the entire surface of the ion generating surface of the ion generating element is exposed to the inner peripheral surface of the tube portion. is doing.

JP 2004-286384 A

  In the conventional air supply grill provided with the ion generating element, the entire surface of the ion emitting surface of the ion generating element is exposed on the inner peripheral surface of the tube portion. As a result, the ion emission surface of the ion generating element could not be protected.

  The present invention has been made to solve such a problem, and an object thereof is to provide an ion supply device capable of protecting the ion emission surface of an ion generation element.

  In order to solve the above-described problems, an ion supply device according to the present invention is an ion supply device in which ions generated by an ion generating element are blown by an air flow, and an air flow is provided in front of an ion emission surface of the ion generating element. The air passage forming member that forms the air passage to be generated includes a space forming portion that forms a space in which at least the front and rear surfaces along the air flow are opened facing the ion emission surface.

  In the ion supply device of the present invention, a space forming portion that forms a space through which air passes is opposed to the ion emission surface of the ion generation element, and the air passes through the ion emission surface of the ion generation element. By being covered with the space forming portion, the ion emission surface of the ion generating element is protected.

  In addition, a space through which air passes is formed in front of the ion emission surface of the ion generation element, so that air passing through the air path forming member flows along the ion emission surface of the ion generation element, and ions are generated at the ion generation element. Is generated, ions are supplied to the air passing through the air passage forming member.

  According to the ion supply device of the present invention, the front of the ion emission surface of the ion generating element is covered with the space forming portion in a state where air passes, so that supply of ions to the air passing through the air passage forming member is not hindered. In addition, the ion emission surface of the ion generating element can be protected.

  Embodiments of an ion supply device of the present invention will be described below with reference to the drawings.

<Configuration example of air supply grille>
FIG. 1 is a side sectional view showing an example of an air supply grill as an embodiment of an ion supply device, and FIG. 2 is a front cross-sectional view showing an example of an air supply grill according to the present embodiment.

  3 is a plan view of the air supply grill according to the present embodiment, and the side sectional view shown in FIG. 1 is an arrow view taken along the line AA shown in FIG. 3 and a front view shown in FIG. The cross-sectional view is a cross-sectional view taken along the line BB shown in FIG.

  FIG. 4 is a plan sectional view showing an example of an air supply grill according to the present embodiment, and FIG. 5 is an exploded perspective view showing an example of the air supply grill according to the present embodiment.

  An air supply grill 1A according to the present embodiment includes a tube portion 2 that forms an air passage through which air passes, an ion generator 3 that supplies ions to the air that passes through the tube portion 2, and air supplied with ions is blown out. The grill body 4 is provided.

  The grill body 4 includes an opening 40 through which air passes, a front panel 41 that is detachably attached to face the opening 40, a flange 42 formed at the periphery of the opening 4, and a periphery of the front panel 41. The formed blower outlet 43 is provided.

  The air supply grille 1 </ b> A opens the outlet 43 by sandwiching a plate member 100 constituting a ceiling of a house between the flange portion 42 of the grill main body 4 and a mounting bracket (not shown) provided in the grill main body 4. It is fixed to the ceiling or the like of the house while being exposed inside.

The ion generator 3 is an example of an ion generating element, and approximately the same number of positive ions and negative ions are emitted from the ion emission surface 30. The principle of the ion generator 3 will be described. In the ion generator 3, a pair of electrodes (not shown) are arranged to face each other via a dielectric, and an AC voltage taken from a household AC power source or the like is boosted and applied between the electrodes. As a result, corona discharge occurs, and oxygen or moisture in the air is ionized by receiving energy by ionization, and H ⁺ (H ₂ O) _m (m is an arbitrary natural number) and O ₂ ⁻ (H ₂ O) _n. (Where n is an arbitrary natural number) emits ions mainly.

These H ⁺ (H ₂ O) _m and O ₂ ⁻ (H ₂ O) _n adhere to the surface of the floating bacteria and chemically react to generate H ₂ O ₂ or .OH as an active species. Since H ₂ O ₂ or .OH exhibits very strong activity, they can surround and remove airborne bacteria. Here, .OH is one kind of active species, and represents radical OH.

  Thereby, approximately the same number of positive ions and negative ions are generated by the ion generator 3, and approximately the same number of positive ions and negative ions are supplied to the air passing through the tube portion 2, thereby removing floating germs in the air. .

  The pipe portion 2 is an example of an air passage forming member, and has a circular shape with a hollow cross-sectional shape, for example, an L-shaped shape, and one end side is connected to the grill body 4. Moreover, the opening part 21 in which the mounting base 20 to which the ion generator 3 is attached was formed in the pipe part 2 is formed in the upper surface in this example. The tube portion 2 may be linear.

  In the supply air grill 1 </ b> A, the ion generator 3 is attached to the attachment member 5, and the attachment member 5 to which the ion generator 3 is attached is attached to the attachment base 20 of the tube portion 2.

  In addition, the air supply grill 1 </ b> A includes a substrate box 10 that is attached to the tube portion 2 via the attachment member 5. A substrate 10a on which various elements for driving the ion generator 3 are mounted is mounted in the substrate box 10, and the ion generator 3 and the substrate 10a are electrically connected by wiring (not shown).

  Next, with reference to each figure, the structure of the attachment member 5 which attaches the ion generator 3 to the pipe part 2 is demonstrated.

  The attachment member 5 has a claw portion 50a and a rib 50b to which the ion generator 3 is fixed. The frame portion 50 is inserted into the opening 21 of the tube portion 2, and the claw portion 50a and the rib 50b are attached to the frame portion 50. A space forming portion 51 that forms a space 51 a having a predetermined height in front of the ion emission surface 30 of the fixed ion generator 3 is provided.

  The attachment member 5 includes an air passage forming opening 52 that opens the front and rear frame portions 50 of the space 51a along the direction of air flow in the tube portion 2, and the ion emission surface 30 and the space of the ion generator 3. An ion emission surface opening 53 having an opening in the space forming portion 51 facing each other across 51a is provided.

  Furthermore, the attachment member 5 includes an attachment piece portion 54 in which a hole portion is formed in accordance with the position of the screw hole 20 a formed in the attachment base 20 of the tube portion 2 in the frame portion 50.

  The air passage forming opening 52 of the attachment member 5 is configured such that the opening position on the ion generator 3 side is substantially flush with the ion emission surface 30 of the ion generator 3. Thereby, in the air supply grill 1 </ b> A, the air taken into the space 51 a from the air passage forming opening 52 on the upstream side with respect to the air flow passing through the tube portion 2 extends along the ion emission surface 30 of the ion generator 3. And is blown out from the air passage forming opening 52 on the downstream side with respect to the air flow.

  Further, the air passage forming opening 52 of the attachment member 5 has a configuration in which the height H from the ion emission surface 30 of the ion generator 3 to the space forming portion 51 is set such that a human finger does not enter the space 51a. In this example, the height to the space forming portion 51 is set to 8 mm, which is 12 mm or less and about 10 mm.

  Furthermore, the ion emission surface opening 53 of the space forming portion 51 has a configuration in which openings having a size that does not allow a human finger to enter are arranged in a lattice pattern. Further, the ion emission surface opening 53 includes a convex portion 53a protruding along the air flow in the tube portion 2, and has a rectifying effect in the space 51a in front of the ion emission surface 30 of the ion generator 3. .

  Next, the structure of the ion generator 3 and the attachment member 5 attached to the tube part 2 will be described.

  In the supply air grill 1A, a packing 31 as a sealing member is attached to the outer peripheral surface of the ion generator 3 in contact with the inner peripheral surface of the mounting member 5, and the ion generator 3 to which the packing 31 is attached is a frame portion. By being inserted into 50, the ion generator 3 is fixed to the attachment member 5 by the claw portion 50a and the rib 50b.

  When the ion generator 3 is attached to the attachment member 5, the air supply grille 1 </ b> A is installed at the attachment site between the ion generator 3 and the attachment member 5 by the packing 31 that enters between the ion generator 3 and the attachment member 5. Airtightness is maintained.

  In addition, the air supply grill 1A has a packing 55 as a sealing member attached to the outer peripheral surface of the attachment member 5 in contact with the inner peripheral surface of the opening 21 of the tube portion 2, and the ion generator 3 is attached. The attachment member 5 to which the packing 55 is attached is inserted into the opening 21 of the pipe part 2.

  In the air supply grille 1A, the attachment piece portion 54 of the attachment member 5 inserted into the opening 21 of the tube portion 2 is placed on the attachment base 20 of the tube portion 2 and the screw 6 is fastened, whereby the ion generator 3 is attached to the pipe part 2 by the attachment member 5.

  When the attachment member 5 is attached to the pipe part 2, the air supply grille 1 </ b> A is kept airtight at the attachment part between the attachment member 5 and the pipe part 2 by the packing 55 that enters between the attachment member 5 and the pipe part 2. Be drunk.

  Thereby, the air supply grille 1 </ b> A prevents the air passing through the tube portion 2 from leaking from the attachment portion between the ion generator 3 and the attachment member 5 and the attachment portion between the attachment member 5 and the tube portion 2.

  Further, in the air supply grill 1 </ b> A, when the ion generator 3 is attached to the tube portion 2 by the attachment member 5, the ion emission surface 30 of the ion generator 3 is substantially flush with the inner peripheral surface of the tube portion 2.

  Further, in the air supply grill 1A, the entire surface of the air passage forming opening 52 of the attachment member 5 is exposed inside the tube portion 2, and a space forming portion 51 is provided so as to face the ion emission surface 30 of the ion generator 3. Thus, a space 51 a formed in front of the ion emission surface 30 is disposed in the air path formed by the tube portion 2.

<Operation example of air supply grill>
Next, with reference to each figure, operation | movement of 1 A of supply grills of this Embodiment is demonstrated. In the air supply grill 1 </ b> A, air is taken into the space 51 a formed in front of the ion emission surface 30 of the ion generator 3 from the upstream air passage forming opening 52 with respect to the air flow passing through the tube portion 2. Thus, the air passing through the tube portion 2 flows along the ion emission surface 30 of the ion generator 3.

  In the air supply grille 1A, when the ion generator 3 is driven and approximately the same number of positive ions and negative ions are released from the ion emission surface 30, the air flowing along the ion emission surface 30 of the ion generator 3 is substantially changed to air. The same number of positive ions and negative ions are supplied.

  The air to which positive ions and negative ions are supplied flows from the air flow path forming opening 52 and the ion emission surface opening 53 facing the ion emission surface 30 on the downstream side of the air flow through the tube 2 to the tube portion. The air containing the same number of positive ions and negative ions is blown out from the air outlet 43 of the grill body 4.

  The air supply grill 1 </ b> A is provided with a space forming portion 51, which is opposed to the ion emission surface 30 of the ion generator 3 and has an air passage forming opening 52 formed on the front and rear surfaces along the air flow direction in the tube portion 2. As a result, a space 51 a having a predetermined height through which air passes is formed in front of the ion emission surface 30.

  Thereby, while preventing supply of the ion with respect to the air which passes the pipe part 2, the ion emission surface of the ion generator 3 is protected by the space formation part 51. FIG.

  As described above, in order to generate an air flow along the ion emission surface 30 of the ion generator 3, the air passage forming opening 52 is formed on the front and rear surfaces of the space 51a along the air flow, and the space An ion emission surface opening 53 is formed in the formation part 51.

  And the opening part of the air-path formation opening part 52 and the ion emission surface opening part 53 is set to the magnitude | size which a human finger cannot enter, and even if a tool and a hand are put in the pipe part 2, The ion emission surface 30 of the ion generator 3 is prevented from being touched to prevent adhesion and damage of the ion emission surface 30 and to ensure safety.

<Modification of air supply grille>
FIG. 6 is a side sectional view showing a modified example of the air supply grill as an embodiment of the ion supply device, and FIG. 7 is a front sectional view showing a modified example of the air supply grill of the present embodiment.

  When the ion generator 3 is attached to the tube portion 2 by the attachment member 5, the air supply grille 1 </ b> B of the modified example has the ion emission surface 30 of the ion generator 3 at a predetermined height from the inner peripheral surface of the tube portion 2. The projecting position is obtained, and the cross-sectional shape is brought close to the vicinity of the center O of the circular tube portion 2.

  FIG. 8 is an explanatory diagram showing the wind speed distribution of the air passing through the pipe portion, and the wind speed is indicated by the length of the arrow. The air passing through the inside of the pipe part 2 having a circular cross-sectional shape has a slow wind speed near the inner peripheral surface of the pipe part 2 and gradually increases toward the center. Will be faster.

  Thereby, the air supply grille 1B is protruded from the inner peripheral surface of the tube part 2 by the attachment member 5, and the ion generator 3 is attached, and the ion emission surface 30 of the ion generator 3 is located near the center of the tube part 2. By approaching, the ion emission surface 30 which discharge | releases a positive ion and a negative ion is arrange | positioned in the pipe part 2 in the position where a wind speed is quick.

  The air supply grille 1B is configured so that the ion emission surface 30 of the ion generator 3 is disposed at a position where the wind speed is fast inside the tube portion 2, so that the positive air in the air blown out from the air outlet 43 of the grill body 4 is correct. The number of ions and negative ions increases.

  However, since the ion generator 3 protrudes into the tube portion 2, the air flow is hindered by the ion generator 3 to reduce the air volume, and the height of the ion emission surface 30 exceeds the center of the tube portion 2. , The rate of decrease of the air volume will increase.

  For this reason, the height of the ion emission surface 30 of the ion generator 3 is determined in consideration of the number of ions in the air blown from the supply grill 1B and the air volume of the air blown from the supply grill 1B. In this example, the protruding amount of the ion generator 3 is set so that the ion emission surface 30 is disposed between about 1/6 and 1/2 of the diameter of the tube portion 2.

  In the supply grill 1B of the present embodiment, the number of positive ions and negative ions in the blown air is compared with a configuration in which the ion emission surface of the ion generator is substantially the same as the inner peripheral surface of the tube portion. However, it became about 1.5 times.

<Configuration example of ventilation system>
FIG. 9 is a configuration diagram illustrating an example of a ventilation system to which an air supply grill as an ion supply device is applied, and FIG. 10 is a configuration diagram illustrating an example of a ventilation device that configures the ventilation system of the present embodiment. Next, the ventilation system 11 provided with the air supply grille 1A of the present embodiment will be described.

  The ventilation system 11 according to the present embodiment sucks the outside air OA and blows it out into the room as the supply air SA, sucks the return air RA from the room and discharges it as the exhaust air EA, and returns the outside air OA and the room from the inside. A heat exchange type ventilator 12 that exchanges heat with the air RA is provided, and the above-described air supply grill 1A is connected to the ventilator 12.

  As shown in FIG. 10, the ventilator 12 includes an external suction port 120OA through which the outside air OA is sucked in, a supply air outlet 120SA through which the air supply SA into the room is blown out, and a room through which the return air RA from the room is sucked in. A suction port 120RA and an exhaust port 120EA through which exhaust EA to the outside is exhausted are provided.

  The ventilation device 12 has a supply air passage 121SA connected from the external suction port 120OA to the supply air outlet 120SA, sucks outside air OA from the external suction port 120OA, and blows out the supply air SA from the supply air outlet 120SA. Is provided.

  The ventilator 12 has an exhaust air passage 121EA connected from the indoor suction port 120RA to the exhaust port 120EA, and has a ventilation fan unit 123 that sucks the return air RA from the indoor suction port 120RA and exhausts the exhaust air EA from the exhaust port 120EA. Prepare.

  Furthermore, a heat exchange element 124 that performs heat exchange between the outside air OA sucked from the external suction port 120OA and the return air RA sucked from the indoor suction port 120RA is provided.

  In the heat exchange element 124, the material forming the supply air passage 121SA and the material forming the exhaust air passage 121EA are stacked so that the supply air passage 121SA and the exhaust air passage 121EA are orthogonal to each other. In the heat exchange element 124, the supply air passage 121SA and the exhaust air passage 121EA are partitioned by a partition wall that has thermal conductivity and does not allow air to pass between the air passing through the supply air passage 121SA and the air passing through the exhaust air passage 121EA. The heat is exchanged at

  In the ventilator 12, the air supply grill 1A described in FIG. 1 and the like is connected to the air supply outlet 120SA via a duct 70SA. Further, the ventilator 12 has a front panel 125 attached to the lower surface, and the indoor suction port 120RA is exposed to the front panel 125.

  The ventilation device 12 includes a filter (not shown) in the supply air passage 121SA and the exhaust air passage 121EA, and is configured so that dust or the like does not adhere to the heat exchange element 124.

  As shown in FIG. 9, the building 71 in which the ventilation system 11 is installed is a single-family house in this example, and has a plurality of rooms 72 partitioned by walls and doors 72a, such as a living room and a kitchen. In the building 71, for example, the ventilation device 12 is installed on the back of the ceiling of the corridor 73, and the ventilation grill 12 and the air supply grill 1A installed on the ceiling of each room 72 are connected by a duct 70SA.

  The building 71 includes an outdoor hood 74OA and an outdoor hood 74EA on the outer wall, and the ventilation system 11 is connected to the outdoor hood 74OA through the duct 70OA at the external suction port 120OA of the ventilator 12 shown in FIG. Further, the exhaust port 120EA is connected to the outdoor hood 74EA through the duct 70EA.

  Further, in the ventilation device 12, the front panel 125 in which the indoor suction port 120RA is formed is exposed on the ceiling of the hallway 73.

  The building 71 has a configuration in which air flows between the room 72 and the corridor 73 through an undercut U provided on the door 72a or an opening such as a louver (not shown). As a result, air supply SA is blown out from the air supply grille 1A of each room 72, and an air flow is formed in which the air in each room 72 is sucked from the ventilator 12 in the corridor 73 through the undercut U and the gallery. The

<Operation example of ventilation system>
Next, an example of operation | movement of the ventilation system 11 of this Embodiment is demonstrated with reference to each figure.

  The ventilation system 11 constitutes a first type ventilation system in which air supply and exhaust are performed by mechanical ventilation, and is continuously operated for 24 hours with a ventilation air volume in which the air in each room 72 is replaced in a predetermined time. That is, in the ventilation device 12, the blower fan unit 122 and the ventilation fan unit 123 are driven at a rotational speed that provides a predetermined ventilation air volume.

  When the blower fan 122 is driven, the ventilation device 12 generates an air flow through the supply air passage 121SA from the external suction port 120OA to the supply air outlet 120SA. Further, in the ventilator 12, when the ventilation fan unit 123 is driven, an air flow is generated in the exhaust air passage 121EA from the indoor suction port 120RA to the exhaust port 120EA.

  Thereby, in the ventilator 12, the outside air OA is sucked from the outdoor hood 74OA on the outer wall of the building through the duct 70OA to the external suction port 120OA, and the supply air SA is blown out from the supply air outlet 120SA through the heat exchange element 124. .

  Further, the return air RA from each room 72 is sucked into the indoor suction port 120RA from the front panel 125 of the corridor 73 through the undercut U or a louver (not shown), and the exhaust air EA is discharged from the exhaust port 120EA through the heat exchange element 124. Then, the exhaust EA discharged from the exhaust port 120EA passes through the duct 70EA and is discharged from the outdoor hood 74EA on the outer wall of the building.

  Then, the outside air OA sucked from the external suction port 120OA and the return air RA sucked from the indoor suction port 120RA are heat-exchanged by passing through the heat exchange element 124, and the supply air SA brought close to room temperature is supplied. It blows out from the blower outlet 120SA.

  The supply air SA blown from the supply air outlet 120SA of the ventilation device 12 passes through the duct 70SA and is blown out of the supply air grill 1A.

  As described above, when the ion generator 3 shown in FIG. 1 or the like is driven, the air supply grille 1 </ b> A releases approximately the same number of positive ions and negative ions from the ion generator 3, so that the air passing through the pipe portion 2 is discharged. Approximately the same number of positive ions and negative ions are supplied.

  Thereby, substantially the same number of positive ions and negative ions are supplied to the supply air SA supplied from the ventilator 12 to the supply air grill 1A, and air containing approximately the same number of positive ions and negative ions is supplied as the supply air SA. It blows out from the blower outlet 43 of the air grill 1A.

  In a building 71 as shown in FIG. 9, air containing approximately the same number of positive ions and negative ions is supplied to a room provided with the air supply grill 1 </ b> A, so that floating germs in the air are removed.

<Configuration example of forced air supply fan>
FIG. 11 is a half sectional view showing an example of a forced air supply fan as an embodiment of the ion supply device. 1 C of forced air supply fans of this Embodiment are the pipe part 8 which forms the air path along which air passes, the ion generator 3 which supplies ion to the air which passes the pipe part 8, and the air supply fan part which ventilates air 9 is provided.

  The pipe portion 8 is an example of an air path forming member, and an air supply fan portion 9 is attached inside. The air supply fan unit 9 is an example of a blowing unit, and includes a fan 90 and a motor 91 that rotationally drives the fan 90. Further, the forced air supply fan 1 </ b> C is attached with a front panel 81 in which an air outlet 80 for blowing out air is formed in front of the pipe portion 8.

  In the forced air supply fan 1 </ b> C, the ion generator 3 is attached to the attachment member 5, and the attachment member 5 to which the ion generator 3 is attached is attached to the pipe portion 8. Next, the structure of the attachment member 5 for attaching the ion generator 3 to the tube portion 8 will be described.

  The attachment member 5 includes a space forming portion 51 that forms a space 51a having a predetermined height in front of the ion emission surface 30 of the ion generator 3, and a front surface and a rear surface of the space 51a along the air flow direction in the tube portion 8. And an ion emission surface opening 53 that opens the space formation portion 51 that faces the ion emission surface 30 of the ion generator 3 across the space 51a.

  In the forced air supply fan 1 </ b> C, when the ion generator 3 is attached to the tube portion 8 by the attachment member 5, the ion emission surface 30 of the ion generator 3 is substantially flush with the inner peripheral surface of the tube portion 8.

  Further, the air passage forming opening 52 of the attachment member 5 is configured such that the opening position on the ion generator 3 side is substantially flush with the ion emission surface 30 of the ion generator 3.

  Thereby, in the forced air supply fan 1 </ b> C, the entire surface of the air passage forming opening 52 of the mounting member 5 is exposed inside the tube portion 8, and the space forming portion 51 is opposed to the ion emission surface 30 of the ion generator 3. By being provided, a space 51 a formed in front of the ion emission surface 30 is disposed in the air path formed by the tube portion 8.

  In the forced air supply fan 1 </ b> C, the air taken into the space 51 a from the air passage forming opening 52 on the upstream side with respect to the air flow passing through the pipe portion 8 by the air supply fan unit 9 is supplied to the ion generator 3. It flows along the ion emission surface 30 and is blown out from the air passage forming opening 52 on the downstream side with respect to the air flow.

  The air passage forming opening 52 of the attachment member 5 is configured such that the height from the ion emission surface 30 of the ion generator 3 to the space forming portion 51 is such that a human finger does not enter the space 51a.

  Furthermore, the ion emission surface opening 53 of the space forming portion 51 has a configuration in which openings having a size that does not allow a human finger to enter are arranged in a lattice pattern.

<Operation example of forced air supply fan>
Next, the operation of the forced air supply fan 1C of the present embodiment will be described. When the air supply fan unit 9 is driven, the forced air supply fan 1 </ b> C is located upstream in the space 51 a formed in front of the ion emission surface 30 of the ion generator 3 with respect to the air flow passing through the tube unit 8. The air passing through the tube portion 8 flows along the ion emission surface 30 of the ion generator 3 by the air being taken in from the air passage forming opening 52.

  In the forced air supply fan 1 </ b> C, when the ion generator 3 is driven and approximately the same number of positive ions and negative ions are released from the ion emission surface 30, the air flowing along the ion emission surface 30 of the ion generator 3 is Approximately the same number of positive ions and negative ions are supplied.

  The air to which positive ions and negative ions are supplied flows from the ion passage surface opening 52 and the ion emission surface opening 53 facing the ion emission surface 30 on the downstream side of the air flow through the tube portion 8 to the tube portion. The air containing the same number of positive ions and negative ions is blown out from the air outlet 80 of the front panel 81.

  The forced air supply fan 1 </ b> C has a space forming portion 51 in which an air passage forming opening 52 is formed on the front and rear surfaces along the air flow direction in the tube portion 8 so as to face the ion emission surface 30 of the ion generator 3. By being provided, a space 51 a having a predetermined height through which air passes is formed in front of the ion emission surface 30.

  Thereby, while preventing supply of the ion with respect to the air which passes along the pipe part 8, the ion emission surface of the ion generator 3 is protected by the space formation part 51. FIG.

  In this example, the ion generation surface 30 of the ion generator 3 is substantially the same as the inner peripheral surface of the tube portion 8, but the ion generation surface 30 of the ion generator 3 is changed from the inner peripheral surface of the tube portion 8. It is good also as a structure made to protrude inside.

  As described above, in order to generate an air flow along the ion emission surface 30 of the ion generator 3, the air passage forming opening 52 is formed on the front and rear surfaces of the space 51a along the air flow, and the space An ion emission surface opening 53 is formed in the formation part 51.

  And the opening part of the air path formation opening part 52 and the ion emission surface opening part 53 is set to the magnitude | size which a human finger cannot enter, and even if a tool and a hand are put in the pipe part 8, The ion emission surface 30 of the ion generator 3 is prevented from being touched to prevent adhesion and damage of the ion emission surface 30 and to ensure safety.

  The present invention is connected to a ventilator or the like through a duct and is provided with an air supply grill that blows out air blown from the ventilator, a suction grill that sucks air into the ventilator, and an air supply fan. It is applied to a natural air supply port that supplies air into a room where air is sucked in by a ventilation device or a ventilation device.

It is a sectional side view showing an example of an air supply grill as an embodiment of an ion supply device. It is front sectional drawing which shows an example of the air supply grille of this Embodiment. It is a top view of the air supply grille of this Embodiment. It is a plane sectional view showing an example of an air supply grill of this embodiment. It is a disassembled perspective view which shows an example of the air supply grille of this Embodiment. It is a sectional side view which shows the modification of the air supply grille as embodiment of an ion supply apparatus. It is front sectional drawing which shows the modification of the air supply grille of this Embodiment. It is explanatory drawing which shows the wind speed distribution of the air which passes a pipe part. It is a block diagram which shows an example of the ventilation system to which the air supply grill as an ion supply apparatus was applied. It is a block diagram which shows an example of the ventilator to which the ventilation system of this Embodiment was applied. It is a half sectional view showing an example of a forced air supply fan as an embodiment of an ion supply device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1A ... Supply air grill, 2 ... Pipe part, 20 ... Mounting base, 21 ... Opening part, 3 ... Ion generator, 30 ... Ion discharge surface, 4 ... Grill Main body, 5 ... Mounting member, 50 ... Frame, 51 ... Space forming part, 51a ... Space, 52 ... Air channel forming opening, 53 ... Ion emission surface opening

Claims (3)

In the ion supply device in which ions generated by the ion generating element are blown by an air flow,
A space forming portion that forms a space at least at the front and rear surfaces along the air flow in the air passage forming member that forms an air passage in which an air flow is generated, in front of the ion emission surface of the ion generating element, An ion supply apparatus comprising the ion emission surface facing the ion emission surface. The ion supply device according to claim 1, wherein the space forming unit includes an ion emission surface opening through which air passes and a convex portion protruding along the air flow. The ion supply device according to claim 1, wherein the air passage forming member includes a blowing unit that generates an air flow.

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