JP2022007766A - Blowing apparatus - Google Patents

Abstract

To provide a blowing apparatus, which is configured to reduce operation sound.SOLUTION: A blowing apparatus comprises: a case 10 having an air passage 100 through which air flows formed therein; a first blower 21, arranged in a first area A on an inner wall surface of the case 10, which blows air to one side or the other side in an axial direction along the inner wall surface in the first area A; a second blower 22, arranged in a second area B opposing in a radial direction of the case 10 to the first area A, which blows air to one side or the other side in the axial direction along an inner wall surface in the second area B; and a control part 205 that controls air-blowing directions and air blow amounts of the blowers 21 and 22.SELECTED DRAWING: Figure 1

Description

The present invention relates to a blower.

Conventionally, there is one described in Patent Document 1. This device changes the flow direction of the pumped air by a horizontal louver for vertical adjustment and a horizontal louver for horizontal adjustment. This device has a spur gear rotated by a motor and a plurality of spur gears and a lateral louver side gear means for applying a rotational force to the lateral louver side adjusting member, and a spur gear rotated by a motor and a plurality of bevel gears. It is equipped with a vertical louver side gear means that applies a rotational force to the louver side adjusting member. Then, when each spur gear and a plurality of bevel gears are rotated by the driving force of the motor, the directions of the horizontal louver for vertical direction adjustment and the horizontal louver for horizontal direction adjustment are changed, so that the flow direction of the pumped air is changed. It is configured.

Japanese Unexamined Patent Publication No. 2005-55061

The device described in Patent Document 1 has a configuration in which the direction of each adjusting lateral louver changes due to the rotation of each spur gear and a plurality of bevel gears, and the flow direction of the pumped air changes. Therefore, there is a problem that an operating noise is generated when the gears mesh with each other and the comfort is impaired.

The present invention has been made in view of the above points, and an object thereof is to reduce operating noise.

In order to achieve the above object, the invention according to claim 1 is a blower device that controls the direction of air blown from an external blower (80), and is an air passage that extends in the axial direction (J) and allows air to flow. It includes a case (10) forming (100), a blower (21, 22) arranged in the case to change the direction of air, and a control unit (205) for controlling the blower. Further, the case has an inflow port (101) formed on one side in the axial direction to introduce air blown from an external blower into the case, and an outlet (101) formed on the other side in the axial direction to blow out air from the inside of the case. 102), and the blower is arranged in the first region (A) of the inner wall surface of the case, and blows air to one side or the other side in the axial direction along the inner wall surface of the first region. 1 Blower (21) and a second region (B) that faces the first region in the radial direction of the case, and air is blown to one side or the other side in the axial direction along the inner wall surface of the second region. It has a second blower (22) for blowing air. Then, the direction of the air blown from the outlet of the case is controlled by controlling at least one of the direction of blowing the air of the first blower and the second blower and the amount of the blown air by the control unit.

According to such a configuration, at least one of the direction and the amount of air blown by the first blower and the second blower is controlled by the control unit, and the air is separated from the inner wall surface of the case or the inner wall surface of the case is controlled. Adhesion of air to is promoted. That is, the direction of the air blown out from the outlet is controlled by promoting the separation of air from the inner wall surface of the case or the adhesion of air to the inner wall surface of the case, so that the operating noise can be reduced. can.

In order to achieve the above object, the invention according to claim 11 is a blower device for controlling the direction of air blown from an external blower, which extends in the axial direction and forms an air passage through which air flows. It is provided with a blower (28, 29) arranged in the case and changing the direction of air, and a control unit for controlling the blower. In addition, the case has an inflow port formed on one side in the axial direction to introduce air blown from an external blower into the case, and an outlet formed on the other side in the axial direction to blow out air from the inside of the case. A diameter-expanded portion in which the cross-sectional area of the flow path of the air passage increases as it approaches, and a reduced-diameter portion that is arranged between the enlarged-diameter portion and the outlet and the cross-sectional area of the flow path of the air passage decreases as it approaches the outlet. A position where the air taken in from the first air intake port (131) formed in the reduced diameter portion is separated from the position facing the first air intake port in the radial direction by a predetermined distance on one side in the axial direction. In the radial direction of the first air intake port and the case, the first auxiliary flow path (133) introduced into the air passage toward one side in the axial direction through the first air discharge port (132) formed in The air taken in from the second air intake port (134) formed at the opposite position is placed at a position separated by a predetermined distance on one side in the axial direction from the position facing the second air intake port in the radial direction. It has a second auxiliary flow path (136) that is introduced into the air passage toward one side in the axial direction through the formed second air discharge port (135). Then, the direction of the air blown from the blower outlet and the direction of the air blown out from the outlet of the case are controlled by controlling at least one of the direction of blowing the air of the blower and the amount of the blown air by the control unit.

According to such a configuration, the air introduced into the air passage from the first air discharge port or the second air discharge port draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case. .. After that, it blows out from the flow outlet along the inner wall surface of the reduced diameter portion in a direction intersecting the axial direction. Therefore, the operating noise can be reduced.

In order to achieve the above object, the invention according to claim 13 is a blower device for controlling the direction of air blown from an external blower, which extends in the axial direction and forms an air passage through which air flows. It is provided with a blower (25) arranged in the case and changing the direction of air, and a control unit for controlling the blower. In addition, the case has an inflow port formed on one side in the axial direction to introduce air blown from an external blower into the case, and an outlet formed on the other side in the axial direction to blow out air from the inside of the case. An enlarged diameter portion in which the cross-sectional area of the air passage becomes larger as it approaches, and a reduced diameter portion that is arranged between the enlarged diameter portion and the outlet and the cross-sectional area of the air passage becomes smaller as it approaches the outlet. , A side flow that introduces the air taken in from the air intake port (121) formed on the inner wall surface of the case into the air passage from the air discharge port (122) provided on one side in the axial direction from the air intake port. It has a road (123) and. Further, the blower is arranged inside the sub-flow passage and blows the air taken into the inside of the sub-flow passage from the air intake port so as to be introduced into the air passage from the air intake port. Then, the air introduced from the air discharge port into the air passage draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then flows and blows along the inner wall surface of the reduced diameter portion. Blow out from the exit in a direction that intersects the axial direction.

According to such a configuration, the blower is arranged inside the sub-flow passage and blows the air taken into the inside of the sub-flow passage from the air intake port so as to be introduced from the air intake port to the air passage. .. Then, the air introduced into the air passage from the air discharge port draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then flows and blows along the inner wall surface of the reduced diameter portion. Since the air is blown out from the outlet in a direction intersecting the axial direction, the operating noise can be reduced.

The reference numerals in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is the schematic sectional drawing of the blower of 1st Embodiment. It is a figure which showed the structure of the blower which blows out air in the direction opposite to the flow of the air flowing through an air passage. It is a figure which showed the structure of the blower which blows out air in the forward direction with respect to the flow of the air flowing through an air passage. It is the figure which showed the positional relationship between the blower used for the simulation, and the vehicle interior space. It is a figure showing the state of the 1st to 4th blowers in a simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is a figure showing the state of the 1st to 4th blowers in a simulation. It is a figure which showed the simulation result of the condition shown in FIG. 7. It is a figure showing the state of the 1st to 4th blowers in a simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the schematic sectional drawing of the blower of 2nd Embodiment. It is a figure showing the state of the 1st to 4th blowers in a simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is a figure showing the state of the 1st to 4th blowers in a simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is a figure which showed the simulation result of the condition shown in FIG. It is a schematic sectional drawing of the blower of 3rd Embodiment. It is an arrow view of XVIII in FIG. It is the figure which showed the state of each blower in the simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the figure which showed the state of each blower in the simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the figure which showed the state of each blower in the simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the schematic sectional drawing of the blower of 4th Embodiment. It is a modification of the blower apparatus of 4th Embodiment, and is the figure which showed the shape which looked at the outlet from the occupant side of the blower apparatus of 5th Embodiment. It is a modification of the blower apparatus of 4th Embodiment, and is the figure which showed the shape which looked at the outlet from the occupant side of the blower apparatus of 6th Embodiment. It is a schematic sectional drawing of the blower of 7th Embodiment. It is the figure which showed the state of each blower in the simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the figure which showed the state of each blower in the simulation. It is a figure which showed the simulation result of the condition shown in FIG. It is the figure which showed the state of each blower in the simulation. It is a figure showing the simulation result of the condition shown in FIG. 33. It is a figure which showed the structure of the blower of 8th Embodiment. It is a figure which showed the arrangement of each electrode of the blower of 8th Embodiment. It is the figure which showed the result of having analyzed the electric field strength of the 1st electrode of a blower by simulation. It is a figure which showed the structure of the blower of 9th Embodiment. It is a figure which showed the structure of the blower of the tenth embodiment. It is an enlarged view of the XL part in FIG. 39.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the following embodiments, the same or equal parts are designated by the same reference numerals, and the description thereof will be omitted.

(First Embodiment)
The blower device according to the first embodiment will be described with reference to FIGS. 1 to 10. The main blower device 1 is a device that controls the direction of the air blown from the external blower 80 arranged in the HVAC of the vehicle air conditioner and blows the air toward the vehicle interior of the vehicle. The main blower device 1 is arranged in the instrument panel of the vehicle.

As shown in FIG. 1, the blower 1 includes a case 10, first to fourth blowers 21, 22, 23, 24.

The case 10 is made of resin and extends in the axial direction J to form an air passage 100 through which air flows. The case 10 has an inflow port 101 formed on one side of the axial direction J to introduce air blown from the external blower 80 into the case 10, and an outlet formed on the other side of the axial direction J to blow out air from the inside of the case. 102 and. The main flow introduced into the case 10 from the inflow port 101 passes through the air passage 100 and then is blown out from the air outlet 102 into the passenger compartment of the vehicle.

Further, the case 10 has a trumpet shape. That is, in the case 10, the tubular portion 110 having a constant flow path cross-sectional area of the air passage 100, and the flow path cross-sectional area of the air passage 100 increases as the air passage 100 approaches the outlet 102 from one end of the tubular portion 110. It has an enlarged diameter portion 111. The inflow port 101 is formed on one side of the cylindrical portion 110 in the axial direction J, and the outlet 102 is formed on the other side of the enlarged diameter portion 111 in the axial direction J.

The first blower 21 is arranged in the first region A of the inner wall surface of the case 10, and blows air to one side or the other side of the axial direction J along the inner wall surface of the first region A. Further, the second blower 22 is arranged in the second region B which faces the first region A in the radial direction of the case 10, and is located on one side or the other side of the axial direction J along the inner wall surface of the second region B. Blow air to.

The third blower 23 is arranged in the third region C between the first region A and the outlet 102, and blows air to one side or the other side of the axial direction J along the inner wall surface of the third region C. do. The fourth blower 24 is arranged in the fourth region D between the second region B and the outlet 102, and blows air to one side or the other side of the axial direction J along the inner wall surface of the fourth region D. do.

The first to fourth blowers 21, 22, 23, and 24 are configured as small blowers that generate ionized wind containing ions generated by corona discharge. The operating noise of the first to fourth blowers 21, 22, 23, 24 is extremely small as compared with the blowers using the blower fan. The first to fourth blowers 21, 22, 23, 24 are arranged on the inner wall surface of the enlarged diameter portion 111.

As shown in FIG. 2, the first to fourth blowers 21, 22, 23, and 24 each have a first electrode 201 and a plurality of second electrodes 202 arranged so as to sandwich the first electrode 201. Have. Further, it has a power supply 204 for applying a predetermined voltage between the plurality of second electrodes 202 and the first electrode 201, a switch 203, and a control unit 205.

In FIG. 2, the power supply 204, the switch 203, and the control unit 205 are schematically shown. Actually, the power supply 204, the switch 203, and the control unit 205 are arranged outside the case 10 shown in FIG. That is, the first electrode 201 and the plurality of second electrodes 202 are arranged inside the first to fourth blowers 21, 22, 23, and 24 shown in FIG.

The first electrode 201 has a plurality of protrusions 2018 having a pointed tip. Not only the length in the width direction becomes shorter as the length in the width direction approaches the tip, but also the length in the thickness direction becomes shorter as the length in the thickness direction approaches the tip. A plurality of protrusions 2018 of the first electrode 201 are sandwiched between the plurality of second electrodes 202. The first electrode 201 is connected to the power supply terminal of the power supply 204.

The plurality of second electrodes 202 each have a rectangular shape and are arranged so as to be parallel to each other. That is, the two second electrodes 202 having a rectangular shape are arranged so as to face each other. The two second electrodes 202 are connected via a conductive member. The plurality of second electrodes 202 are connected to the ground terminal of the power supply 204 via the switch 203.

Here, the operation of the first to fourth blowers 21, 22, 23, 24 will be described.

First, when the switch 203 is turned on by the control unit 205, the ground terminal of the power supply 204 and the second electrode 202 are connected, and a high voltage of several kilovolts is applied to the first electrode 201. Then, a potential difference of several kilovolts is generated between the first electrode 201 and the second electrode 202.

At this time, an electric field is concentrated on the tips of the plurality of protrusions 2018 of the first electrode 201, a corona discharge is generated at the tips of the plurality of protrusions 2018, air molecules are ionized, and the ionized air molecules are generated by Coulomb force. It moves toward the second electrode 202. At this time, the ionic wind flows in the X direction of the arrow.

In the present embodiment, since the electric field is configured to concentrate on the tips of the plurality of protrusions 2018 of the first electrode 201, ionization can be promoted and the ion wind can be increased.

When the air indicated by the arrow Y is flowing through the air passage 100 in the case 10, the ionic wind generated by the corona discharge becomes a headwind facing one side in the axial direction J. Further, the first to fourth blowers 21, 22, 23, and 24 are arranged on the inner wall surface of the case 10, respectively, and blow air along the inner wall surface. As shown in FIG. 2, when the ionic wind flows in the direction of the arrow X, the air flowing through the air passage 100 in the case 10 is separated from the inner wall surface and flows.

As shown in FIG. 3, the plurality of protrusions 2018 of the first electrode 201 may be arranged so as to face the downstream side of the air flow indicated in the arrow Y direction. In this case, the ionic wind generated by the corona discharge becomes a forward wind flowing in the direction of arrow X. Further, the air flowing through the air passage 100 does not peel off, and the air flowing through the air passage 100 can flow so as to adhere to the inner wall surface of the case 10.

Next, the results of simulation analysis of the airflow blown out from the blower 1 will be described with reference to FIGS. 4 to 10. The vertical axis of FIGS. 4, 6, 8 and 10 represents the vertical position in the vehicle interior of the vehicle, and the horizontal axis represents the position of the vehicle interior 50 in the front-rear direction. It is assumed that the blower device 1 is arranged at the frontmost position of the passenger compartment 50 of the vehicle, and air is blown toward the passenger compartment.

As shown in FIG. 5, when the first to fourth blowers 21, 22, 23, and 24 are all stopped, the air pumped from the external blower 80 in the HVAC is introduced into the blower 1, and the blower 1 is introduced. As shown in FIG. 6, the air introduced into the vehicle is blown into the passenger compartment 50 of the vehicle so as to travel substantially straight.

FIG. 7 is set so that the air blown from the first blower 21 becomes a headwind facing one side in the axial direction J, and the air blown from the second blower 22 faces the other side in the axial direction J. It is set to be, and represents a state in which the second and third blowers 22 and 23 are stopped.

In this state, peeling occurs in the mainstream at the portion where the first blower 21 is arranged. That is, the mainstream flows away from the inner wall surface of the portion where the first blower 21 is arranged. Further, in the portion where the second blower 22 is arranged, the mainstream flows along the inner wall surface where the second blower 22 is arranged. That is, the mainstream adhesion to the inner wall surface of the portion where the second blower 22 is arranged is promoted. As a result, the air introduced into the blower 1 is blown out at an angle of about 13 degrees diagonally downward.

FIG. 9 is different from FIG. 7 in that the air blown from the third blower 23 is set to be a forward wind facing the other side in the axial direction J.

In this state, as in FIG. 8, peeling occurs in the mainstream at the portion where the first blower 21 is arranged. Further, in the portion where the second blower 22 is arranged, the mainstream flows along the inner wall surface where the second blower 22 is arranged. Further, in the portion where the third blower 23 is arranged, the mainstream flows along the inner wall surface where the third blower 23 is arranged.

As a result, as shown in FIG. 10, it is possible to further form a flow along the inner wall surface on the lower side of the case 10 up to the immediate vicinity of the outlet 102 of the case 10. In this case, the air introduced into the blower 1 is blown out at an angle of about 27 degrees diagonally downward.

Although the example in which the air introduced into the blower device 1 is blown diagonally downward is shown here, the air introduced into the blower device 1 is configured to be blown diagonally upward. You can also do it.

As described above, the blower 1 is a blower that controls the direction of the air blown from the external blower 80, and includes a case 10 that extends in the axial direction J and forms an air passage 100 through which air flows. I have. Further, it includes a blower arranged in the case 10 to change the direction of air, and a control unit 205 for controlling the blower. Further, the case 10 has an inflow port 101 formed on one side of the axial direction J and introducing the air blown from the external blower 80 into the case, and a blower formed on the other side of the axial direction J to blow out the air from the inside of the case. It has an outlet 102 and. Further, the blower is arranged in the first region A of the inner wall surface of the case 10, and the first blower 21 that blows air to one side or the other side of the axial direction J along the inner wall surface of the first region A is provided. Have. Further, a second blast is arranged in the second region B facing the radial direction of the case with respect to the first region A, and air is blown to one side or the other side of the axial direction J along the inner wall surface of the second region B. It has a vessel 22. Then, the direction of air blown from the first blower 21 and the second blower 22 and at least one of the air blower volume are controlled by the control unit 205 to control the direction of the air blown from the air outlet 102 of the case 10. Will be done.

According to such a configuration, at least one of the direction and the amount of air blown by the first blower 21 and the second blower 22 is controlled by the control unit 205, and the air is separated from the inner wall surface of the case 10 or the air is separated from the inner wall surface of the case 10. Adhesion of air to the inner wall surface of the case 10 is promoted. That is, by promoting the separation of air from the inner wall surface of the case 10 or the adhesion of air to the inner wall surface of the case 10, the direction of the air blown out from the outlet 102 is controlled, so that the operation is performed. Sound can be reduced.

Further, the case 10 has a diameter-expanded portion 111 in which the cross-sectional area of the air passage 100 increases as it approaches the outlet 102. This makes it possible to further promote the separation of air from the inner wall surface of the case 10.

Further, one of the first blower 21 and the second blower 22 is controlled by the control unit 205 to blow air to the other side in the axial direction J, and the other of the first blower 21 and the second blower 22 is controlled. , The control unit 205 is controlled to blow air to one side in the axial direction J.

As a result, the air blown to the other side of the axial direction J promotes the adhesion of air to the inner wall surface of the case 10, and the air blown to one side of the axial direction J promotes the adhesion of the air to the inner wall surface of the case 10. Peeling is promoted. Therefore, the air can be blown out from the outlet 102 in the direction intersecting the axial direction J.

Further, the blower device 1 is arranged in the third region C between the first region A and the outlet 102, and blows air to one side or the other side in the axial direction along the inner wall surface of the third region C. It has a third blower 23. Further, a fourth blower 24 arranged in the fourth region D between the second region B and the outlet 102 and blowing air to one side or the other side in the axial direction along the inner wall surface of the fourth region D. have. Then, the control unit 205 controls at least one of the direction and the amount of air blown by any one of the first blower 21 and the fourth blower 24.

According to this, with respect to the air for which the separation of air from the inner wall surface of the case 10 or the adhesion of air to the inner wall surface of the case 10 is promoted, at least one of the third blower 23 and the fourth blower 24 is further subjected to. It is possible to promote the separation of air or the adhesion of air.

Further, the first blower 21 to the fourth blower 24 blow air by an ion wind or a plasma jet generated when a discharge occurs between a plurality of electrodes. In this way, air can be blown by the ion wind or plasma jet generated when a discharge is generated between the plurality of electrodes, and the size can be reduced.

Further, the first to fourth blowers 21, 22, 23, 24 have a first electrode 201 and a plurality of second electrodes 202 arranged so as to sandwich the first electrode 201. Then, the control unit 205 can be configured to generate a discharge by applying a predetermined voltage between at least one electrode of the plurality of second electrodes 202 and the first electrode 201.

Further, among the first electrode 201 and the plurality of second electrodes 202, the electrode having a high potential when a predetermined voltage is applied has a protrusion 2018 with a sharp tip.

According to this, the electric field can be concentrated on the protrusion 2018, and the amount of blown air generated when the electric discharge occurs can be further increased.

(Second Embodiment)
The blower device according to the second embodiment will be described with reference to FIGS. 11 to 16. The blower of the present embodiment has a different shape of the case 10 from the blower of the first embodiment.

In the blower 1 of the present embodiment, the shape of the case 10 is shaped like a bowling pin. That is, the case 10 has a tubular portion 110 in which the cross-sectional area of the air passage 100 is constant. Further, it has a diameter-expanded portion 111 in which the cross-sectional area of the air passage 100 increases as the air passage 100 approaches the outlet 102 from one end of the tubular portion 110. Further, it has a diameter-reduced portion 112 which is arranged between the diameter-expanded portion 111 and the outlet 102 and whose flow path cross-sectional area of the air passage 100 becomes smaller as it approaches the outlet 102.

The connection portion between the tubular portion 110 and the diameter expansion portion 111 and the connection portion between the diameter expansion portion 111 and the diameter reduction portion 112 are connected so as to be continuous. The outlet 102 is formed at the other end of the reduced diameter portion 112 in the axial direction J.

In the case 10 of the present embodiment, since the flow path cross-sectional area of the air passage 100 becomes smaller as the diameter-reduced portion 112 in which the outlet 102 is formed approaches the outlet 102, the air ejected from the outlet 102. Can be tilted more with respect to the axial direction J.

Next, the results of simulation analysis of the airflow blown out from the blower 1 will be described with reference to FIGS. 12 to 16. The vertical axis of FIGS. 13, 15, and 16 represents the vertical position of the vehicle interior of the vehicle, and the horizontal axis represents the position of the vehicle interior 50 of the vehicle in the front-rear direction. It is assumed that the blower device 1 is arranged at the frontmost position of the passenger compartment 50 of the vehicle, and air is blown toward the passenger compartment.

As shown in FIG. 12, when the first to fourth blowers 21, 22, 23, and 24 are all stopped, the air pumped from the external blower 80 is introduced into the blower 1 and introduced into the blower 1. As shown in FIG. 13, the air is blown into the passenger compartment 50 of the vehicle so as to travel substantially straight.

FIG. 14 shows a state in which the air blown from the second blower 22 is set to be a headwind facing one side in the axial direction J, and the first, third, and fourth blowers 21, 23, and 24 are stopped. Represents.

In this state, as shown in FIG. 15, peeling occurs in the mainstream on the lower inner wall surface where the second blower 22 is arranged. That is, the mainstream flows away from the inner wall surface of the portion where the second blower 22 is arranged. This mainstream rises upward when passing through the enlarged diameter portion 111, then turns downward when passing through the reduced diameter portion 112, and diagonally downward from the outlet 102 as shown in FIG. It is blown out toward.

Further, it is also possible to set the air blown from the first blower 21 to be a forward air facing the other side in the axial direction J. In this case, it is possible to further obtain the effect of adhering the mainstream to the wall surface in the upward direction, and it is possible to reliably adhere to the wall surface even when the wind speed of the mainstream introduced into the case 10 from the external blower 80 is low. Is.

Further, the operations of the first and second blowers 21 and 22 can be turned upside down. That is, the first blower 21 can generate a headwind, and the second blower 22 can generate a forward wind. In this case, the main stream can be blown out diagonally upward from the outlet 102.

As described above, in the present embodiment, the case 10 has a diameter-expanded portion 111 in which the cross-sectional area of the air passage 100 increases as it approaches the air outlet 102. Further, it has a diameter-reduced portion 112 which is arranged between the diameter-expanded portion 111 and the outlet 102 and whose flow path cross-sectional area of the air passage 100 becomes smaller as it approaches the outlet 102.

Therefore, it is possible to change the direction of the air flowing through the diameter-expanded portion 111 at the diameter-reduced portion 112 so that the air flows out from the outlet 102.

By the way, in recent years, due to the increase in size of an in-vehicle display and the like, it is required to reduce the opening area of the outlet 102 by a device arranged in an instrument panel of a vehicle. On the other hand, since the blower 1 has a diameter-reduced portion 112 in which the cross-sectional area of the air passage 100 becomes smaller as it approaches the air outlet 102, the opening area of the air outlet 102 can be reduced. be.

(Third Embodiment)
The blower device according to the third embodiment will be described with reference to FIGS. 17 to 27. Compared with the blower device 1 of the second embodiment, the blower device 1 of the present embodiment is provided with a plurality of auxiliary flow paths 123 and 126 between the tubular portion 110 and the diameter-expanded portion 111 of the case 10. The difference is that they are. In the present blower 1, the first blower 25 is arranged in the sub-channel 123, and the second blower 26 is arranged in the sub-channel 126.

In the case 10, the air taken in from the air intake port 121 formed on the inner wall surface of the case 10 is brought into the air passage 100 from the air discharge port 122 provided on one side of the axial direction J with respect to the air intake port 121. It has an auxiliary flow path 123 to be introduced. The first blower 25 is arranged inside the sub-flow path 123, and blows the air taken in from the air intake port 121 to the air discharge port 122 side.

Further, in the case 10, the air taken in from the air intake port 124 formed on the inner wall surface of the case 10 is air-passed from the air discharge port 125 provided on one side of the axial direction J with respect to the air intake port 124. It has an auxiliary flow path 126 to be introduced into 100. The second blower 26 is arranged inside the sub-flow path 126, and blows the air taken in from the air intake port 124 to the air discharge port 125 side.

FIG. 18 is an arrow view of XVIII in FIG. That is, FIG. 18 is a view of the air outlet 102 seen from the occupant side seated on the seat.

The outlet 102 has a rectangular shape. Further, inside the air outlet 102, a plurality of plate-shaped slits 141 and 142 are arranged so as to extend in the vehicle width direction. Further, the outlet 102 is formed on the other side of the reduced diameter portion 112 in the axial direction J, and the size of the outlet 102 is extremely small with respect to the overall size of the blower 1.

Further, as shown in FIG. 18, two first blowers 25 and two second blowers 26 are arranged side by side in the vehicle width direction.

Next, the results of simulation analysis of the airflow blown out from the blower 1 will be described with reference to FIGS. 19 to 24. The vertical axis of FIGS. 19 to 24 represents the vertical position in the vehicle interior of the vehicle, and the horizontal axis represents the position in the front-rear direction of the vehicle interior of the vehicle. It is assumed that the blower device 1 is arranged at the frontmost position in the passenger compartment of the vehicle, and air is blown toward the passenger compartment.

As shown in FIG. 19, when the first and second blowers 25 and 26 are stopped, the air pumped from the external blower 80 in the HVAC is introduced into the blower 1, and the air introduced into the blower 1 is introduced. Is blown into the passenger compartment of the vehicle so as to travel almost straight as shown in FIG.

FIG. 21 shows a state in which the first blower 25 is in operation and a state in which the second blower 26 is stopped. In this state, as shown in FIGS. 17 and 22, the air introduced from the air discharge port 122 to the air passage 100 by the first blower 25 draws in a part of the main stream flowing through the air passage 100, and the case 10 is expanded. It flows so as to adhere to the inner wall surface on the upper side of the diameter portion 111. After that, it is blown out diagonally downward with respect to the axial direction J from the flow outlet 102 along the inner wall surface of the reduced diameter portion 112.

In this state, when the first blower 21 stops operating, as shown in FIG. 20, the mainstream flowing through the air passage 100 goes straight again, and is blown out into the passenger compartment of the vehicle so as to go straight. ..

Further, as shown in FIG. 23, when the second blower 26 is activated and the first blower 25 is stopped, as shown in FIGS. 17 and 24, the air discharge port is provided by the second blower 26. The air introduced from 125 into the air passage 100 draws in a part of the main stream flowing through the air passage 100. Then, it flows so as to adhere to the inner wall surface on the lower side of the enlarged diameter portion 111 of the case 10. After that, it is blown out diagonally upward with respect to the axial direction J from the flow outlet 102 along the inner wall surface of the reduced diameter portion 112.

In the above configuration, most of the air blown by the first blower 21 circulates in the sub-channel 123, and most of the air blown by the second blower 22 circulates in the sub-passage 126. Flow to. Therefore, it is possible to suppress the amount of ions generated by the first and second blowers 21 and 22 emitted into the vehicle interior from the outlet 102.

As described above, the blower 1 is a blower that controls the direction of the air blown from the external blower 80, and includes a case 10 that extends in the axial direction J and forms an air passage through which air flows. ing. Further, it includes a blower 25 arranged in the case 10 and changing the direction of air, and a control unit 205 for controlling the blower 25. Further, the case 10 is formed on one side of the axial direction J and introduces the air blown from the external blower 80 into the case, and the case 10 is formed on the other side of the axial direction J and blows air from the inside of the case 10. It has an air outlet 102 and. Further, the diameter-expanded portion 111 in which the cross-sectional area of the air passage 100 increases as it approaches the air outlet 102 is arranged between the diameter-expanded portion 111 and the air outlet 102, and the air passage 100 becomes closer to the air outlet 102. It has a reduced diameter portion 112 that reduces the cross-sectional area of the flow path. Further, the air taken in from the air intake port 121 formed on the inner wall surface of the case 10 is introduced into the air passage 100 from the air discharge port 122 provided on one side of the axial direction J with respect to the air intake port 121. It has a flow path 123 and. Further, the blower 25 is arranged inside the sub-passage 123 and blows the air taken into the inside of the sub-passage 123 from the air intake port 121 so as to be introduced into the air passage 100 from the air discharge port 122. Further, the air introduced into the air passage 100 from the air discharge port 122 draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion 111 of the case 12, and then the inner wall surface of the reduced diameter portion 112. The air is blown out from the outlet 102 in a direction intersecting the axial direction J.

According to such a configuration, the air introduced into the air passage 100 from the air discharge port 122 or the air discharge port 125 draws in the air flowing through the air passage 100 and adheres to the inner wall surface of the enlarged diameter portion 111 of the case 12. Flow to. After that, it is blown out from the flow outlet 102 along the inner wall surface of the reduced diameter portion 112 in a direction intersecting the axial direction J. Therefore, the operating noise can be reduced.

(Fourth Embodiment)
The blower device according to the fourth embodiment will be described with reference to FIG. 25. The blower device of the present embodiment is different from the blower device of the third embodiment in that the lower half of the case 10 is omitted. It does not have to be vertically symmetrical as in the third embodiment.

(Fifth Embodiment)
The blower device according to the fifth embodiment will be described with reference to FIG. 26. In the blower device of the third embodiment, the upper side and the lower side of the shape of the air outlet 102 seen from the occupant side seated on the seat are horizontal, respectively. On the other hand, in the blower device of the present embodiment, the upper side and the lower side of the shape of the air outlet 102 seen from the occupant side seated on the seat are wavy. In this way, the upper side and the lower side of the outlet 102 can be corrugated.

(Sixth Embodiment)
The blower device according to the sixth embodiment will be described with reference to FIG. 27. In the blower device 1 of the third embodiment, two first blowers 21 are arranged in the sub-flow path 123, and two second blowers 22 are arranged in the sub-flow path 126. On the other hand, in the present embodiment, the sub-flow path 123 is formed in an annular shape in the circumferential direction about the axis of the case 10, and eight first blowers 21 are provided in the sub-flow path 123. There is.

The sub-passage 123 allows the air taken in from the air intake port 121 formed on the inner wall surface of the case 10 to be taken into the air passage 100 from the air discharge port 122 provided on one side of the axial direction J with respect to the air intake port 121. Introduce to.

Specifically, the sub-flow path 123 is formed in an annular shape extending in the circumferential direction about the axis of the case 10. A plurality of air intake ports 121 are formed on the other side of the auxiliary flow path 123 in the axial direction J, and a plurality of air discharge ports 122 are formed on one side of the auxiliary flow path 123 in the axial direction J. ..

A plurality of first blowers 21 are arranged in the sub-flow path 123 in the circumferential direction of the case 10. Specifically, eight first blowers 21 are arranged in the sub-flow path 123 at equal intervals in the circumferential direction of the case 10. Each first blower 21 blows the air taken in from the air intake port 121 so as to be introduced into the air passage 100 from the air discharge port 122.

According to the above configuration, the sub-flow path 123 is formed in an annular shape extending in the circumferential direction around the axis of the case 10, and a plurality of air discharge ports are formed on one side of the axis direction J in the sub-flow path 123. 122 is formed.

Therefore, by controlling the amount of air blown by the plurality of first blowers 21 arranged in the circumferential direction of the case 10, the direction of the air blown out from the outlet 102 is controlled within a range of 360 degrees with respect to the axis of the case 10. Is possible.

(7th Embodiment)
The blower device according to the seventh embodiment will be described with reference to FIG. 28. Compared with the blower 1 of the third embodiment, the present blower 1 does not have the first to fourth blowers 21, 22, 23, 24, and the case 10 has 21 subchannels. The difference is that 133 and 136 are formed and the blowers 28 and 29 are provided in each of the subchannels 133 and 136, respectively.

The case 10 is separated from the first air intake port 131 formed in the reduced diameter portion 112 and the positions facing the first air intake port 131 in the radial direction on one side of the axial direction J by a predetermined distance. It has a first air outlet 132 formed at the position. Further, the case 10 has a first auxiliary flow path 133 that introduces the air taken in from the first air intake port 131 into the air passage 100 via the first air discharge port 132.

Further, the case 10 has a first air intake port 131 and a second air intake port 134 formed at positions facing each other in the radial direction of the case 10. Further, the second air intake port 134 has a second air discharge port 135 formed at a position separated by a predetermined distance on one side of the axial direction J from a position facing the case 10 in the radial direction. Further, the case 10 has a second sub-passage 136 that introduces the air taken in from the second air intake port 134 into the air passage 100 via the second air discharge port 135.

In addition, although it is shown in FIG. 28 that the first sub-flow path 133 is divided by the second sub-flow path 136, in reality, the first sub-flow path 133 and the second sub-flow path 136 are , Cross each other in the vertical direction of the paper in FIG. 28.

Further, in the first sub-passage 133, a first blower 28 for blowing air taken in from the first air intake port 131 from the first air discharge port 132 to the air passage 100 is arranged.

Further, in the second sub-passage 136, a second blower 29 for blowing air taken in from the second air intake port 134 from the second air discharge port 135 to the air passage 100 is arranged.

Then, the direction of the air blown from the air outlet 102 of the case 10 is controlled by controlling the air volume of the first and second blowers 28 and 29 by the control unit 205.

Next, the results of simulation analysis of the airflow blown out from the blower 1 will be described with reference to FIGS. 29 to 34. The vertical axis of FIGS. 29 to 34 represents the vertical position in the vehicle interior of the vehicle, and the horizontal axis represents the position in the front-rear direction of the vehicle interior of the vehicle.

As shown in FIG. 29, when the first and second blowers 28 and 29 are stopped, the air pumped from the external blower 80 in the HVAC is introduced into the blower 1 and the air introduced into the blower 1 is introduced. Is blown into the passenger compartment of the vehicle so as to travel substantially straight as shown in FIG.

FIG. 31 shows a state in which the first blower 28 is set to blow air and the second blower 29 is set to stop. In this state, air is taken into the first sub-passage 133 from the first air intake port 131, and this air is blown by the first blower 28, and the mainstream air flow of the air passage 100 from the second air discharge port 135. It blows out in the opposite direction.

At this time, as shown in FIG. 34, peeling occurs in the mainstream on the downstream side of the mainstream air flow of the first air discharge port 132. That is, the air flowing along the inner wall surface on the downstream side of the air flow of the first air discharge port 132 flows diagonally upward so as to be separated from the first air discharge port 132 by the air blown out from the first air discharge port 132.

Then, this mainstream flows along the inner wall surface of the enlarged diameter portion 111 of the case 10, and then flows along the inner wall surface of the reduced diameter portion 112 as shown in FIG. 34, thereby turning diagonally downward. It blows out diagonally downward from the outlet 102 in the axial direction J.

In this state, the operation of the first blower 28 is stopped so that the air from the air passage 100 freely flows into the first sub-passage 133. Then, due to the pressure of the airflow flowing along the inner wall surfaces of the enlarged diameter portion 111 and the reduced diameter portion 112, the airflow is continuously introduced from the air passage 100 to the first air intake port 131, and is inside the first auxiliary flow path 133. Air flow is maintained. Therefore, the air flow flowing from the first air discharge port 132 to the air passage 100 is also maintained, and the state in which the mainstream is separated from the inner wall surface below the first air discharge port 132 is also maintained. Then, a part of the air flowing out from the first air discharge port 132 to the air passage 100 is introduced into the first sub-passage 133.

In this way, by allowing the air to freely flow from the air passage 100 to the first sub-passage 133, the air blown out from the first sub-passage 133 to the air passage 100 is again regenerated into the first sub-passage 133. It becomes a feedback state that flows into. Then, the state of blowing out from the outlet 102 diagonally downward with respect to the axial direction J is also maintained.

By stopping the first blower 28 and setting the second blower 29 to blow air, the direction of the air blown from the outlet 102 is directed diagonally upward with respect to the axial direction J. You can also.

With the above configuration, it is possible to maintain the airflow blown from the outlet 102 for a predetermined period even when the blowing of the first blower 28 or the second blower 29 is stopped. Further, it is possible to shorten the operating time of the first and second blowers 28 and 29 for controlling the direction of the air blown from the outlet 102, and the first and second blowers 28, It is possible to suppress the energy consumed by 29.

As described above, the blower 1 is a blower that controls the direction of the air blown from the external blower 80, and includes a case 10 that extends in the axial direction and forms an air passage through which the air flows. There is. Further, it includes blowers 28 and 29 arranged in the case 10 to change the direction of air, and a control unit 205 for controlling the blowers 28 and 29.

Further, the case 10 has an inflow port 101 formed on one side in the axial direction to introduce air blown from an external blower into the case 10. Further, it has an outlet 102 formed on the other side in the axial direction J and blowing air from the inside of the case 10, and a diameter-expanded portion 111 in which the cross-sectional area of the air passage 100 increases as the air passage 102 approaches the outlet 102. There is. Further, it has a diameter-reduced portion 112 which is arranged between the diameter-expanded portion 111 and the outlet 102 and whose flow path cross-sectional area of the air passage 100 becomes smaller as it approaches the outlet. Further, the air taken in from the first air intake port 131 formed in the reduced diameter portion 112 is introduced into the air passage through the first air discharge port 132 toward one side in the axial direction. Has 133. Further, the air taken in from the second air intake port 134 formed at a position facing the first air intake port 131 in the radial direction of the case 10 is passed through the second air discharge port 135 to one of the axial directions J. It has a second sub-passage 136 that is introduced into the air passage 100 toward the side.

The control unit 205 controls the direction in which the air of the blowers 28 and 29 is blown and at least one of the amount of the blown air to control the direction of the air blown out from the outlet of the case.

According to such a configuration, the direction of air blown from the air outlets of the case is controlled by controlling at least one of the air blowing direction and the air blowing amount of the blowers 28 and 29 by the control unit 205. .. Therefore, the operating noise can be reduced.

Further, the blower has a first blower 28 which is arranged in the first sub-passage 133 and blows the air taken in from the first air intake port 131 from the first air discharge port 132 to the air passage 100. There is. Further, it has a second blower 29 which is arranged in the second sub-passage 136 and blows the air taken in from the second air intake port 134 from the second air discharge port 135 to the air passage 100. Then, the direction of the air blown from the air outlet 102 of the case 10 is controlled by controlling the air volume of the first blower 28 and the second blower 29 by the control unit 205.

In this way, by controlling the amount of air blown by the first blower 28 arranged in the first sub-flow path 133 and the second blower 29 arranged in the second sub-flow path 136, the air outlet 102 The direction of the blown air can be controlled.

(8th Embodiment)
The blower device according to the eighth embodiment will be described with reference to FIGS. 35 to 37. The first to fourth blowers 21, 22, 23, and 24 of the first to seventh embodiments have the configuration shown in FIG. 2 or FIG. On the other hand, the first to fourth blowers 21, 22, 23, 24 of the present embodiment combine those shown in FIGS. 2 and 3 to have a forward wind and a head wind with respect to the air flowing in the arrow Y direction. Both are configured to be able to blow air.

As shown in FIGS. 35 to 37, the first to fourth blowers 21, 22, 23, 24 of the present embodiment have one first electrode 201, four second electrodes 2021, 2022, 2024, 2025, It has switches 2031 and 2032, a power supply 204, and a control unit 205.

The first electrode 201 has six protrusions 2018 with sharp tips. Three of the six protrusions 2018 project in one direction, and the remaining three of the six protrusions 2018 project in the opposite direction to the one direction. A high voltage of several kilovolts is applied to the first electrode 201 from the power supply 204.

The second electrodes 2021 and 2022 are arranged so as to face each other, and the second electrodes 2024 and 2025 are also arranged so as to face each other. Further, the second electrode 2021 and the second electrode 2022 are connected to each other via a connecting line 206.

Further, the second electrode 2021 and the second electrode 2022 are connected to the ground terminal of the power supply 204 via the switch 2031. Further, the second electrode 2024 and the second electrode 2025 are connected to the ground terminal of the power supply 204 via the switch 2032.

The tips of the three protrusions 2018 of the first electrode 201 are arranged so as to be sandwiched between the second electrode 2021 and the second electrode 2022. Further, the tips of the remaining three protrusions 2018 of the first electrode 201 are arranged so as to be sandwiched between the second electrode 2024 and the second electrode 2025. The switches 2031 and 2032 are controlled by the control unit 205.

Next, the operation of the blower 1 of the present embodiment will be described.

When the switches 2031 and 2032 are turned off by the control unit 205, the potential difference between the first electrode 201 and the second electrodes 2021, 2022, 2024, and 2025 becomes small, and corona discharge does not occur.

Next, when the switch 2031 is turned on by the control unit 205, a potential difference of several kilovolts is generated between the second electrodes 2021 and 2022 connected to the switch 2031 and the first electrode 201. Then, an electric field is concentrated on the tips of the three protrusions 2018 sandwiched between the second electrode 2021 and the second electrode 2022 among the six protrusions 2018 of the first electrode 201, and a corona discharge is generated at these tips. Due to the movement of air molecules ionized by this corona discharge, an ionic wind is generated in the direction indicated by the arrow X1.

Here, when the switches 2031 and 2032 are turned off by the control unit 205, the potential difference between the first electrode 201 and the second electrodes 2021, 2022, 2024, and 2025 becomes small, and the corona discharge does not occur. Therefore, the ion wind is not generated.

Next, when the switch 2032 is turned on by the control unit 205, a potential difference of several kilovolts is generated between the second electrodes 2024 and 2025 and the first electrode 201. Then, an electric field is concentrated on the tips of the three protrusions 2018 sandwiched between the second electrode 2024 and the second electrode 2025 among the six protrusions 2018 of the first electrode 201, and a corona discharge is generated at these tips. Then, due to the movement of air molecules ionized by the corona discharge, an ionic wind is generated in the direction indicated by the arrow X2.

As described above, by controlling the switches 2031 and 2032 by the control unit 205, it is possible to blow ion air in the direction of arrow X1 or generate ion air in the direction of arrow X2.

Next, the result of simulation analysis of the electric field strength of the first electrode 201 of the blower 1 will be described with reference to FIG. 37.

A voltage of -3 kilovolts is applied to the first electrode 201, and the second electrodes 2024 and 2025 are set to the ground potential. Further, a voltage of -3 kilovolts is applied to the second electrodes 2021 and 2022.

At this time, it was confirmed that the tip of the protrusion 2018 of the first electrode 201 sandwiched between the second electrodes 2024 and 2025 has an electric field density of 5 megavolts / meter.

Similar to the first electrode 201, electric field concentration does not occur in the protrusion 2018 of the first electrode 201 sandwiched between the second electrodes 2021 and 2022 to which a high voltage of -3 kilovolts is applied. On the other hand, the region where the electric field is concentrated becomes large in the protrusion 2018 of the first electrode 201 sandwiched between the second electrodes 2021 and 2022 set to the ground potential. In this example, the ion wind can be generated in the direction indicated by the arrow X2.

(9th Embodiment)
The blower device according to the ninth embodiment will be described with reference to FIG. 38. The blower 1 of the eighth embodiment has one first electrode 201 and four second electrodes 2021, 2022, 2024, 2025. On the other hand, the blower 1 of the present embodiment is different in that it has two first electrodes 2011 and 2012 and six second electrodes 2021, 2022, 2023, 2024, 2025 and 2026.

The blower 1 of the present embodiment includes two first electrodes 2011, 2012, six second electrodes 2021, 2022, 2023, 2024, 2025, 2026, three switches 2031, 2032, 2033, and a power supply 204. , And a control unit 205.

The second electrode 2021 and the second electrode 2022 are arranged to face each other, and the second electrode 2022 and the second electrode 2023 are arranged to face each other. Further, the second electrode 2024 and the second electrode 2025 are arranged to face each other, and the second electrode 2025 and the second electrode 2026 are arranged to face each other.

The tip of one protrusion 2018 of the first electrode 2011 is arranged so as to be sandwiched between the second electrode 2021 and the second electrode 2022, and the tip of the other protrusion 2018 of the first electrode 2011 is the second electrode. It is arranged so as to be sandwiched between 2024 and the second electrode 2025.

Further, the tip of one protrusion 2018 of the first electrode 2012 is arranged so as to be sandwiched between the second electrode 2022 and the second electrode 2023, and the tip of the other protrusion 2018 of the first electrode 2012 is the first. It is arranged so as to be sandwiched between the two electrodes 2025 and the second electrode 2026.

Further, the second electrode 2021 is connected to the ground terminal of the power supply 204 via the switch 2031, the second electrode 2022 is connected to the ground terminal of the power supply 204 via the switch 2032, and the second electrode 2023 is connected to the ground terminal of the power supply 204 via the switch 2033. It is connected to the ground terminal of the power supply 204. The switches 2031, 2032, and 2033 are controlled by the control unit 205.

Further, the second electrodes 2024, 2025, 20261 are connected to the ground terminal of the power supply 204.

Here, when the switches 2031, 2032, and 2033 are turned off by the control unit 205, a potential difference of several kilovolts is generated between the second electrodes 2024, 2025, 2036 and the first electrodes 2011, 2012. Then, out of the six protrusions 2018 of the first electrode 201, the three protrusions 2018 sandwiched between the second electrode 2024 and the second electrode 2025 and the three protrusions sandwiched between the second electrode 2025 and the second electrode 2026. An electric field is concentrated at the tip of 2018, and a corona discharge is generated at this tip. Due to the movement of air molecules ionized by the corona discharge, an ionic wind is generated in the direction indicated by the arrow X2.

The blower 1 of the present embodiment has first electrodes 2011, 2012 and six second electrodes 2021, 2022, 2023, 2024, 2025, 2026, and is compared with the blower 1 of the eighth embodiment. Therefore, the number of electrodes is increasing. Therefore, the amount of ionized air molecules can be increased, and the amount of ionized air can be increased.

(10th Embodiment)
The blower device according to the tenth embodiment will be described with reference to FIGS. 39 to 40. The blower 1 of the present embodiment has first electrodes 2011, 2012, second electrodes 2021, 2022, 2023, 2024, a frame body 208, and a holding portion 209.

A part of the first electrode 2011 is arranged so as to be sandwiched between the second electrode 2021 and the second electrode 2022. Further, a part of the first electrode 2012 is arranged so as to be sandwiched between the second electrode 2023 and the second electrode 2024.

The frame body 208 has a rectangular frame shape. The holding portion 209 holds the first electrodes 2011, 2012 and the second electrodes 2021, 2022, 2023, and 2024 inside the frame body 208. The holding portion 209 is composed of a plurality of plate-shaped members extending from the left and right side plates of the frame body 208 toward the left and right center direction of the frame body 208.

The first electrodes 2011, 2012 and the second electrodes 2021, 2022, 2023, 2024 are assembled inside the frame body 208 by the holding portion 209 at predetermined intervals.

An uneven portion 2081 is formed between the first contact portion 201A in which the first electrode 2011 and the holding portion 209 are in contact with each other and the second contact portion 2021A in which the second electrode 2021 and the holding portion 209 are in contact with each other. The uneven portion 2081 is provided to increase the creepage distance, which is the shortest distance along the surface between the first contact portion 201A and the second contact portion 2021A in the holding portion 209.

The uneven portion 2081 is formed by a protruding portion 2083 protruding from the left and right side plates of the frame body 208 toward the left and right center of the frame body 208.

Further, an uneven portion 2082 is formed between the first contact portion 201A in which the first electrode 2011 and the holding portion 209 are in contact and the second contact portion 2022A in which the second electrode 2022 and the holding portion 209 are in contact with each other. There is. The uneven portion 2082 is provided to increase the creepage distance, which is the shortest distance along the surface between the first contact portion 201A and the second contact portion 2022A in the holding portion 209.

The uneven portion 2082 is formed by a protruding portion 2084 protruding from the left and right side plates of the frame body 208 toward the left and right center of the frame body 208.

In the present embodiment, the uneven portions 2081 and 2082 are formed by the protruding portions 2083 and 2084 protruding from the left and right side plates of the frame body 208 toward the left and right center direction of the frame body 208. On the other hand, the concave-convex portions 2081 and 2082 may be formed by forming recesses recessed from the left-right center direction of the frame body 208 to the left or right.

As described above, the uneven portion 2081 suppresses the creeping discharge generated along the creeping surface of the holding portion 209 between the first contact portion 201A and the second contact portion 2021A, so that the corona discharge is more stably generated. Can be made to.

Further, since the uneven portion 2082 suppresses the creeping discharge generated along the creeping surface of the holding portion 209 between the first contact portion 201A and the second contact portion 2022A, the corona discharge can be generated more stably. can.

(Other embodiments)
(1) In the first to tenth embodiments, the blowers 21, 22, 23, and 24 blow air by the ion wind generated when a discharge is generated between the first electrode 201 and the plurality of second electrodes 202. , 25, 28, 29 are shown. On the other hand, for example, the blowers 21, 22, 23, 24, 25, 28, 29 may be configured by using a plasma actuator that generates a jet flow by using a dielectric barrier discharge. Further, the blowers 21, 22, 23, 24, 25, 28 and 29 may be configured by using a fan rotated by an actuator or the like.

(2) In the first embodiment, the example including the case 10 having a trumpet shape is shown, but for example, the configuration may be provided with the case 10 such that the cross section of the air passage 100 has a rectangular shape.

The present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the claims. Further, the above embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential or when they are clearly considered to be essential in principle. stomach. Further, in each of the above embodiments, when numerical values such as the number, numerical values, quantities, and ranges of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and when it is clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. Further, in each of the above embodiments, when the material, shape, positional relationship, etc. of the constituent elements, etc. are referred to, except when specifically specified or when the material, shape, positional relationship, etc. are limited to a specific material, shape, positional relationship, etc. in principle. , The material, shape, positional relationship, etc. are not limited.

(summary)
According to the first aspect shown in part or all of each of the above embodiments, the blower comprises a case that extends in the axial direction and forms an air passage through which air flows. Further, it is provided with a blower arranged in the case and changing the direction of air, and a control unit for controlling the blower. Further, the case has an inflow port formed on one side in the axial direction to introduce air blown from an external blower into the case, and an outlet formed on the other side in the axial direction to blow out air from the inside of the case. is doing. Further, it has a first blower which is arranged in the first region of the inner wall surface of the case and blows air to one side or the other side in the axial direction along the inner wall surface of the first region. Further, it has a second blower arranged in a second region facing the radial direction of the case with respect to the first region and blowing air to one side or the other side in the axial direction along the inner wall surface of the second region. ing. Then, the direction of the air blown from the outlet of the case is controlled by controlling at least one of the direction of blowing the air of the first blower and the second blower and the amount of the blown air by the control unit.

Further, according to the second aspect, the case has a diameter-expanded portion in which the cross-sectional area of the air passage increases as it approaches the air outlet. This makes it possible to further promote the separation of air from the inner wall surface of the case.

Further, according to the third aspect, the case has a diameter-reduced portion in which the cross-sectional area of the air passage becomes smaller as it approaches the air outlet. This makes it possible to reduce the opening area of the air outlet.

Further, according to the fourth aspect, the case is arranged between a diameter-expanded portion in which the cross-sectional area of the air passage increases as it approaches the outlet and between the diameter-expanded portion and the outlet, and as it approaches the outlet. It has a reduced diameter portion that reduces the cross-sectional area of the air passage. Therefore, it is possible to change the direction of the air flowing through the diameter-expanded portion 111 at the diameter-reduced portion 112 so that the air flows out from the outlet 102.

Further, according to the fifth aspect, one of the first blower and the second blower is controlled by the control unit to blow air to the other side in the axial direction, and the first blower and the second blower are controlled. The other is controlled by the control unit to blow air to one side in the axial direction.

As a result, the air blown to the other side in the axial direction promotes the adhesion of air to the inner wall surface of the case, and the air blown to one side in the axial direction promotes the separation of air from the inner wall surface of the case. Will be done. Therefore, it is possible to blow air from the outlet in a direction intersecting the axial direction.

Further, according to the sixth aspect, the blower is arranged in the third region between the first region and the air outlet, and the air is located on one side or the other side in the axial direction along the inner wall surface of the third region. It has a third blower that blows air. Further, it has a fourth blower which is arranged in the fourth region between the second region and the air outlet and blows air to one side or the other side in the axial direction along the inner wall surface of the fourth region. .. Then, the control unit controls at least one of the direction and the amount of air blown by any one of the first blower and the fourth blower.

According to this, for the air in which the separation of air from the inner wall surface of the case or the adhesion of air to the inner wall surface of the case is promoted, the air is further provided by at least one of the third blower 23 and the fourth blower 24. It is possible to promote exfoliation or adhesion of air.

Further, according to the seventh aspect, the blower blows air by an ion wind or a plasma jet generated when a discharge is generated between a plurality of electrodes.

In this way, air can be blown by an ionic wind or a plasma jet generated when a discharge is generated between a plurality of electrodes.

Further, according to the eighth aspect, the blower has a first electrode and a plurality of second electrodes arranged so as to sandwich the first electrode. Further, a discharge is generated by applying a predetermined voltage between at least one of the plurality of second electrodes and the first electrode by the control unit.

In this way, the blower can be configured so that a discharge is generated by applying a predetermined voltage between at least one of the plurality of second electrodes and the first electrode.

Further, according to the ninth aspect, the electrode having a high potential when a predetermined voltage is applied among the first electrode and the plurality of second electrodes has a protrusion having a sharp tip.

According to this, the electric field can be concentrated on the protrusion 2018, and the amount of blown air generated when the electric discharge occurs can be further increased.

Further, according to the tenth aspect, the blower device includes a holding portion for holding the first electrode and the second electrode. Then, between the first contact portion where the first electrode and the holding portion come into contact with each other and the second contact portion where the plurality of second electrodes and the holding portion come into contact with each other, the first contact portion and the second contact portion in the holding portion are formed. An uneven portion for increasing the creepage distance, which is the shortest distance along the surface between the contact portion and the contact portion, is formed.

According to this, since the creeping discharge generated along the creeping holding portion between the first contact portion and the second contact portion is suppressed by the uneven portion, the corona discharge can be generated more stably.

Further, according to the eleventh aspect, the blower device includes a case extending in the axial direction and forming an air passage through which air flows. Further, it is provided with a blower arranged in the case and changing the direction of air, and a control unit for controlling the blower. Further, the case has an inflow port formed on one side in the axial direction to introduce air blown from an external blower into the case. In addition, there is an outlet that is formed on the other side in the axial direction and blows out air from inside the case. In addition, the diameter-expanded portion where the cross-sectional area of the air passage becomes larger as it approaches the outlet, and the contraction where the cross-sectional area of the air passage becomes smaller as it approaches the outlet, which is arranged between the enlarged diameter portion and the outlet. It has a diameter and a diameter. Further, it has a first auxiliary flow path for introducing the air taken in from the first air intake port formed in the reduced diameter portion into the air passage toward one side in the axial direction through the first air discharge port. ing. Further, the air taken in from the second air intake port formed at a position facing the first air intake port in the radial direction of the case is directed to one side in the axial direction through the second air discharge port. It has a second secondary flow path to be introduced into the passage. Then, the direction of the air blown from the blower outlet and the direction of the air blown out from the outlet of the case are controlled by controlling at least one of the direction of blowing the air of the blower and the amount of the blown air by the control unit.

Further, according to the twelfth viewpoint, the blower is a first blower arranged in the first sub-flow path and blowing air taken in from the first air intake port from the first air discharge port to the air passage. Have. Further, it has a second blower which is arranged in the second sub-flow path and blows the air taken in from the second air intake port from the second air discharge port to the air passage. Then, the direction of the air blown from the air outlet of the case is controlled by controlling the air volume of the first blower and the second blower by the control unit.

According to such a configuration, it is possible to maintain the airflow blown out from the outlet for a predetermined period even when the blowing of the first blower or the second blower is stopped.

Further, according to the thirteenth aspect, the blower device includes a case extending in the axial direction and forming an air passage through which air flows. Further, it is provided with a blower arranged in the case and changing the direction of air, and a control unit for controlling the blower. Further, the case has an inflow port formed on one side in the axial direction to introduce air blown from an external blower into the case. Further, it has an outlet formed on the other side in the axial direction to blow out air from the inside of the case, and a diameter-expanded portion in which the cross-sectional area of the air passage increases as the air passage approaches the outlet. Further, it has a diameter-reduced portion which is arranged between the enlarged diameter portion and the air outlet and the cross-sectional area of the air passage becomes smaller as the air passage approaches the air outlet. Further, it has a secondary flow path for introducing the air taken in from the air intake port formed on the inner wall surface of the case from the air discharge port provided on one side in the axial direction from the air intake port to the air passage. There is. Further, the blower is arranged inside the sub-flow passage and blows the air taken into the inside of the sub-flow passage from the air intake port so as to be introduced into the air passage from the air discharge port. Then, the air introduced from the air discharge port into the air passage draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then flows and blows along the inner wall surface of the reduced diameter portion. Blow out from the exit in a direction that intersects the axial direction.

Further, according to the fourteenth viewpoint, the air intake port is the first air intake port, the air exhaust port is the first air exhaust port, the sub-channel is the first sub-channel, and the blower. Is the first blower. Further, the case is further provided with air taken in from the second air intake port facing the first air intake port in the radial direction of the case on one side in the axial direction with respect to the second air intake port. It has a second secondary flow path that is introduced from the second air discharge port into the air passage. Further, the blower is arranged inside the second sub-flow passage so that the air taken into the inside of the second sub-flow passage from the second air intake port is introduced into the air passage from the second air intake port. It has a second blower that blows air. Then, the air introduced into the air passage from the second air discharge port draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then flows along the inner wall surface of the reduced diameter portion. Blow out from the flow outlet in a direction that intersects the axial direction.

In this way, the first sub-passage can be further provided with a second sub-passage, and air can be circulated from both the first sub-passage and the second sub-passage to the air passage. ..

Further, according to the fifteenth viewpoint, the sub-channel is formed in an annular shape extending in the circumferential direction about the axis of the case. Further, an air intake port is formed on the other side in the auxiliary flow path in the axial direction, and a plurality of air discharge ports are formed on one side in the auxiliary flow path in the axial direction. Further, a plurality of blowers are arranged in the subchannel in the circumferential direction of the case, and the plurality of blowers blow the air taken in from the air intake port into the air passage through the air discharge port.

In this way, in the sub-flow path, a plurality of blowers arranged in the circumferential direction of the case are provided, and the plurality of blowers introduce the air taken in from the air intake port into the air passage from the air discharge port. It can also be configured to blow air.

1 Blower 10 Case 21-29 Blower 80 External blower 100 Air passage 101 Inlet 102 Outlet 110 Cylindrical part 111 Expanded part 112 Reduced diameter part 123, 126 Secondary flow path 201 1st electrode 202 2nd electrode 203 Switch 204 Power supply 205 Control unit

Claims (15)

A blower that controls the direction of the air blown from the external blower (80).
A case (10) extending in the axial direction (J) and forming an air passage (100) through which the air flows, and a case (10).
Blowers (21, 22) arranged in the case and changing the direction of the air, and
A control unit (205) for controlling the blower is provided.
The case is formed on one side in the axial direction and has an inflow port (101) for introducing the air blown from the external blower into the case, and is formed on the other side in the axial direction and is formed from the inside of the case. With an outlet (102) that blows out air,
The blower is a first blower arranged in a first region (A) of the inner wall surface of the case and blowing the air to one side or the other side in the axial direction along the inner wall surface of the first region. (21) and the second region (B) arranged in the radial direction of the case with respect to the first region, and the said on one side or the other side in the axial direction along the inner wall surface of the second region. It has a second blower (22) that blows air, and has.
The direction of the air blown from the outlet of the case is controlled by controlling at least one of the direction of blowing the air and the amount of the blown air of the first blower and the second blower by the control unit. Blower to be. The blower according to claim 1, wherein the case has a diameter-expanded portion (111) in which the cross-sectional area of the flow path of the air passage increases as it approaches the air outlet. The blower according to claim 1 or 2, wherein the case has a reduced diameter portion (112) in which the cross-sectional area of the flow path of the air passage becomes smaller as the air passage approaches the outlet. The case is arranged between a diameter-expanded portion (111) in which the cross-sectional area of the air passage increases as it approaches the outlet, and the case is arranged between the diameter-expanded portion and the outlet, and the case is arranged as it approaches the outlet. The blower according to claim 1, further comprising a reduced diameter portion (112) in which the cross-sectional area of the air passage is reduced. One of the first blower and the second blower is controlled by the control unit to blow the air to the other side in the axial direction, and the other of the first blower and the second blower is controlled by the control unit. The blower according to any one of claims 1 to 4, wherein the control unit controls to blow the air to one side in the axial direction. The blower is arranged in a third region (C) between the first region (A) and the air outlet, and is located on one side or the other side in the axial direction along the inner wall surface of the third region. The third blower (23) for blowing the air and the fourth region (D) between the second region and the outlet are arranged in the axial direction along the inner wall surface of the fourth region. It has a fourth blower (24) that blows the air on one side or the other side.
The control unit according to any one of claims 1 to 5, wherein the control unit controls at least one of the direction in which the air is blown and the amount of air blown by any one of the first blower and the fourth blower. Blower. The blower according to any one of claims 1 to 6, wherein the blower blows the air by an ion wind or a plasma jet generated when a discharge is generated between a plurality of electrodes. Device. The blower is
The first electrode (201) and
It has a plurality of second electrodes (202) arranged so as to sandwich the first electrode, and has.
The blower according to claim 7, wherein the discharge is generated by applying a predetermined voltage between at least one of the plurality of second electrodes and the first electrode by the control unit. The blower according to claim 8, wherein the electrode having a high potential when the predetermined voltage is applied among the first electrode and the plurality of second electrodes has a protrusion (2018) having a sharp tip. Device. A holding portion (209) for holding the first electrode and the plurality of second electrodes is provided.
The first contact in the holding portion is between the first contact portion in which the first electrode and the holding portion are in contact and the second contact portion in which the plurality of second electrodes and the holding portion are in contact with each other. The blower according to claim 8 or 9, wherein the uneven portion (2081, 2082) for increasing the creepage distance, which is the shortest distance along the surface between the portion and the second contact portion, is formed. It is a blower that controls the direction of the air blown from the external blower.
A case that extends in the axial direction and forms an air passage through which the air flows,
Blowers (28, 29) arranged in the case and changing the direction of the air, and
A control unit that controls the blower is provided.
The case is formed on one side in the axial direction to introduce the air blown from the external blower into the case, and is formed on the other side in the axial direction to blow out the air from the inside of the case. An air outlet, an enlarged diameter portion in which the cross-sectional area of the air passage increases as it approaches the air outlet, and an air passage that is arranged between the enlarged diameter portion and the air outlet and approaches the air outlet. The reduced diameter portion where the cross-sectional area of the flow path becomes smaller and the air taken in from the first air intake port (131) formed in the reduced diameter portion are brought into the radial direction of the first air intake port and the case. A first sidestream to be introduced into the air passage toward one side in the axial direction via a first air discharge port (132) formed at a position separated by a predetermined distance from the opposite position on one side in the axial direction. The air taken in from the path (133) and the second air intake port (134) formed at a position facing the first air intake port in the radial direction of the case is taken into the second air intake port. And the air passage toward one side in the axial direction via a second air discharge port (135) formed at a position separated from the position facing the radial direction of the case on one side in the axial direction by a predetermined distance. Has a second sub-channel (136) to be introduced into
A blower device in which the direction of the air blown from the outlet of the case is controlled by controlling at least one of the direction of blowing the air and the amount of the blown air of the blower by a control unit. The blower is a first blower (28) arranged in the first sub-flow path and blowing the air taken in from the first air intake port from the first air discharge port to the air passage. It has a second blower (29) arranged in the second sub-flow path and blowing the air taken in from the second air intake port from the second air discharge port to the air passage.
The blower device according to claim 11, wherein the direction of the air blown from the outlet of the case is controlled by controlling the blower amounts of the first blower and the second blower by the control unit. .. It is a blower that controls the direction of the air blown from the external blower.
A case that extends in the axial direction and forms an air passage through which the air flows,
A blower (25) arranged in the case and changing the direction of the air,
A control unit that controls the blower is provided.
The case is formed on one side in the axial direction to introduce the air blown from the external blower into the case, and is formed on the other side in the axial direction to blow out the air from the inside of the case. The air passage is arranged between the air outlet, a diameter-expanded portion in which the cross-sectional area of the air passage increases as it approaches the air outlet, and the diameter-expanded portion and the air outlet, and the air passage approaches the air outlet. A reduced diameter portion that reduces the cross-sectional area of the flow path and the air taken in from the air intake port (121) formed on the inner wall surface of the case are provided on one side of the air intake port in the axial direction. It has an auxiliary flow path (123) that is introduced into the air passage from the air discharge port (122).
The blower is arranged inside the sub-flow path and blows the air taken into the inside of the sub-flow path from the air intake port so as to be introduced into the air passage from the air discharge port.
The air introduced into the air passage from the air discharge port draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then the reduced diameter portion. A blower that flows along the inner wall surface and blows out from the outlet in a direction intersecting the axial direction. The air intake port is a first air intake port, the air exhaust port is a first air exhaust port, the sub-channel is a first sub-channel, and the blower is a first blower. And
The case further takes in the air from the second air intake port (124) facing the first air intake port in the radial direction of the case in the axial direction of the second air intake port. It has a second auxiliary flow path (126) that is introduced into the air passage from a second air discharge port (125) provided on one side.
The blower is arranged inside the second sub-flow passage, and the air taken into the inside of the second sub-flow passage from the second air intake port is taken into the inside of the second sub-flow passage from the second air intake port to the air passage. Has a second blower (26) that blows air to be introduced into
The air introduced into the air passage from the second air discharge port draws in the air flowing through the air passage and flows so as to adhere to the inner wall surface of the enlarged diameter portion of the case, and then the diameter is reduced. The blower according to claim 13, wherein the air flow along the inner wall surface of the unit and blow out from the air outlet in a direction intersecting the axial direction. The sub-channel is formed in an annular shape extending in the circumferential direction about the axis of the case.
The air intake port is formed on the other side in the auxiliary flow path in the axial direction, and a plurality of the air discharge ports are formed on one side in the auxiliary flow path in the axial direction.
A plurality of the blowers are arranged in the subchannel in the circumferential direction of the case.
The blower according to claim 13, wherein the plurality of blowers blow air taken in from the air intake port so as to be introduced into the air passage from the air discharge port.

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