JP6346700B1 - Airflow discharge unit and fluid equipment - Google Patents

Abstract

An object of the present invention is to enhance the effect of swaying wind from a fluid device. In an airflow discharge unit of a fluid device, an inflow port through which an airflow flows, an outflow port through which the airflow flows out, a first flow path connecting the inflow port and the outflow port, and the first flow A second flow path that is provided outside the path and has two openings and communicates with the first flow path through the openings, the second flow path including a plurality of ribs. Defined by the wall. The second flow path may be defined by a wall portion including a plurality of bent portions that change the direction of the fluid passing through the second flow path. [Selection] Figure 12

Description

  One embodiment of the present invention relates to an air flow discharge unit and a fluid device.

  In recent years, devices using fluidic elements are known. The fluid element is a general term for control elements having a fluid (liquid, gas) as an operating body. A device that controls a fluid only by the movement of the fluid without a moving part is particularly called a pure fluid element.

  As a pure fluid element attached to an air shower device, a technique described in Patent Document 1 is known.

  The pure fluid element described in Patent Document 1 includes a fluid inlet, a connection duct through which a fluid flowing in from the fluid inlet crosses, and a fluid ejection nozzle through which the fluid crossing the connection duct flows out. The fluid in the connection duct is driven by the pressure difference generated by the fluid flowing in the nozzle, and the flow velocity of the fluid flowing out from the ejection nozzle is changed by the flow of fluid in the connection duct generated by this drive. The duct has two symmetrical flow paths each having a curved cross section, and the two flow paths are joined at a junction between the connecting duct and the fluid flowing between the fluid injection nozzle and the fluid ejection nozzle. It will be merged.

JP 2004-275985 A

  However, the technique described in Patent Document 1 has a problem that it is impossible to obtain the effect and feeling of “swaying” the airflow.

  For example, in the case of a hand-held dryer, the user himself / herself manually shakes the dryer up / down or left / right to shake the wind from the dryer up / down or left / right. In order to obtain the same effect by self-excited vibration of the airflow, it is necessary to slowly shake the airflow up and down or left and right. However, it is difficult to achieve this with the pure fluid element described in Patent Document 1. Met. That is, the pure fluid element described in Patent Document 1 is intended to be used for dust removal, and creates a large and strong airflow, resulting in a slamming airflow, I couldn't get a real feeling.

  In view of such a problem, an embodiment of the present invention has an object of enhancing the “fluctuation” effect of the airflow from the fluid device.

  An airflow discharge unit according to an embodiment of the present invention includes an inflow port through which an airflow flows, an outflow port through which the airflow flows out, a first flow path that connects the inflow port and the outflow port, and the first A second flow path provided outside the flow path, having two openings, and communicating with the first flow path through the opening, wherein the second flow path includes a plurality of ribs. Defined by the containing wall.

  The second flow path of the airflow discharge unit according to an embodiment of the present invention may be configured to have a plurality of corners.

  The ribs of the airflow discharge unit according to an embodiment of the present invention are alternately formed on a first wall that defines the second flow path and a second wall that faces the first wall. May be.

  Two said 2nd flow paths of the airflow discharge unit which concerns on one Embodiment of this invention may be provided symmetrically when it sees in a cross section.

  In the peripheral wall portion constituting the outlet of the air flow discharge unit according to the embodiment of the present invention, a pair of recesses recessed on the inlet side may be formed side by side in the left-right direction at the center in the vertical direction. Good.

  The rib of the airflow discharge unit according to an embodiment of the present invention may be formed to have a convex shape that is larger than one half of the width of the second flow path.

  The wall part between the said adjacent ribs of the airflow discharge unit which concerns on one Embodiment of this invention may also contain the wall part formed in a straight line. Moreover, the wall part between the said adjacent ribs of the airflow discharge unit which concerns on one Embodiment of this invention may also contain the wall part formed in a curve.

  An airflow discharge unit according to another embodiment of the present invention includes an inflow port through which an airflow flows in, an outflow port through which the airflow flows out, a first flow path connecting the inflow port and the outflow port, and the first A second channel that has two openings and communicates with the first channel through the openings, the second channel being the first channel 2 is defined by a wall including a plurality of bent portions that change the direction of the fluid passing through the two flow paths.

  The second flow path of the airflow discharge unit according to another embodiment of the present invention may be configured to have a plurality of corners.

  The airflow discharge unit according to an embodiment of the present invention may be attached to a dryer.

  Moreover, the fluid apparatus which concerns on one Embodiment of this invention is equipped with the airflow discharge unit which concerns on one Embodiment of this invention, and the main body which flows out the fluid to the said inflow port of the said airflow discharge unit.

It is a perspective view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention is mounted | worn with a main body. It is a top view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention is mounted | worn with a main body. It is a side view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention is mounted | worn with a main body. It is a perspective view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention was mounted | worn with the main body. It is a top view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention was mounted | worn with the main body. It is a side view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention was mounted | worn with the main body. It is a front view which shows a mode that the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention was mounted | worn with the main body. It is a perspective view which shows the structure by the side of the outflow port of the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention. It is sectional drawing which looked at the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention from the outflow port side. It is a disassembled perspective view which shows the inflow port of the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention. It is a cross-sectional perspective view which shows the structure by the side of the inflow port of the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention. It is sectional drawing by the side of an inflow port of the airflow discharge unit of the fluid apparatus which concerns on one Embodiment of this invention. It is a cross-sectional perspective view which shows the structure by the side of the inflow port of the airflow discharge unit of the fluid apparatus which concerns on 2nd embodiment of this invention. It is sectional drawing by the side of an inflow port of the airflow discharge unit of the fluid apparatus which concerns on 2nd embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. However, the present invention can be implemented in many different modes and should not be construed as being limited to the description of the embodiments exemplified below. In order to clarify the description, the drawings may be schematically represented with respect to the width, thickness, shape, and the like of each part as compared to actual aspects, but are merely examples and limit the interpretation of the present invention. It is not a thing. In addition, in the present specification and each drawing, elements similar to those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description may be omitted as appropriate. In addition, the letters “first” and “second” attached to each element are convenient signs used to distinguish each element, and have no meaning unless otherwise specified. .

  In this specification, when a certain member or region is “on (or below)” another member or region, this is directly above (or directly below) the other member or region unless otherwise specified. Including not only in some cases but also above (or below) other members or regions, that is, when other components are included above (or below) other members or regions .

(First embodiment)
<Configuration of fluid equipment>
FIG. 1 is a perspective view showing a state in which an airflow discharge unit of a fluid device according to an embodiment of the present invention is attached to a main body. FIG. 2 is a plan view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is mounted on the main body. FIG. 3 is a side view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is attached to the main body.

  A fluidic device 100 according to an embodiment of the present invention includes a main body 110 and an airflow discharge unit 120.

  The main body 110 is a hand-held dryer in this example. As another example, the main body 110 may be a fixed dryer. The main body 110 may be a fluid device (for example, a dryer, a fan, a pet dryer, a mist generating device, etc.) other than a device that blows air to the hair. The main body 110 may be any device that flows an air flow into the air flow discharge unit 120.

  As shown in FIGS. 1 to 3, the airflow discharge unit 120 is mounted on the main body 110 with the protruding portion 126 fitted into the wind outlet 112 of the main body 110. The airflow discharge unit 120 has a mechanism for changing the direction of the airflow sent from the main body 110. Details of the structure of the airflow discharge unit 120 will be described later.

  FIG. 4 is a perspective view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is mounted on the main body. FIG. 5 is a plan view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is mounted on the main body. FIG. 6 is a side view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is mounted on the main body. FIG. 7 is a front view showing a state in which the airflow discharge unit of the fluid device according to the embodiment of the present invention is mounted on the main body.

  As shown in FIGS. 4 to 6, the airflow discharge unit 120 is used by being attached to the tip of the wind outlet 112 of the main body 110. In this example, the airflow discharge unit 120 is used by being directly attached to the wind outlet 112 of the main body 110, but is not limited thereto, and other members are provided between the airflow discharge unit 120 and the main body 110. You may make it attach with interposition. Further, the mounting angle of the airflow discharge unit 120 with respect to the main body 110 (relative angle around the center of the wind outlet 112) is not limited to that described in the present embodiment, but is ± with respect to the mounting angle described in the present embodiment. It is good also as an attachment angle of 90 degrees.

  As shown in FIG. 5, the airflow discharge unit 120 is formed in a slightly tapered shape in the blowing direction. However, the airflow discharge unit 120 may be formed in a reverse taper shape in the blowing direction, or may be formed in a cylindrical shape.

  As shown in FIG. 6, the vertical width W <b> 1 of the airflow discharge unit 120 is formed larger than the vertical width W <b> 2 of the wind outlet 112 of the main body 110, and the vertical width of the wind outlet 112 of the main body 110. The outlet 124 of the airflow discharge unit 120 is formed to have a larger width in the vertical direction.

  As shown in FIG. 7, the inside of the airflow discharge unit 120 is hollow, and serves as a flow path for the airflow blown from the main body 110 to be blown from the outlet 124 to the outside.

<Configuration of air flow discharge unit of fluid equipment>
[Outlet configuration]
FIG. 8 is a perspective view showing the configuration of the outlet side of the airflow discharge unit of the fluid device according to the embodiment of the present invention. FIG. 9 is a cross-sectional view of the airflow discharge unit of the fluid device according to the embodiment of the present invention as viewed from the outlet side.

  As shown in FIG. 8, the outer peripheral portion 123 that defines the outflow port 124 has two concave portions 127. By providing the two concave portions 127, it is possible to smoothly switch the wind direction upward and downward, which will be described later.

  That is, as will be described later, the airflow discharge unit 120 of the fluid device according to the embodiment of the present invention continuously switches between the airflow X along the upper portion 140 and the airflow Y along the lower portion 142 to swing the airflow up and down. At this time, the airflow tends to travel along the wall due to the Coanda effect. Therefore, when there are no recesses 127 on the left and right and there are walls on the left and right, part of the airflow X or airflow Y travels along the left and right walls in place of the recesses 127 and the airflow X or airflow Y is dispersed. .

  Therefore, at the outlet 124 of the airflow discharge unit 120 of the fluid device according to the embodiment of the present invention, each is arranged in a direction (left and right in this example) perpendicular to the direction in which the airflow is to be shaken (up and down in this example). By forming the outer peripheral portion 123 so as to have a pair of trapezoidal concave portions 127 recessed on the inflow port 122 side in the central portion in the vertical direction, it is possible to prevent dispersion of the airflow in a direction different from the direction in which the airflow is to be shaken, The effect of shaking the airflow can be obtained more strongly. Note that the concave portion 127 is not necessarily formed in a trapezoidal shape, and may be formed in a triangular shape or a U-shape. Further, when the airflow is to be swung left and right, the attachment angle of the airflow discharge unit 120 with respect to the main body 110 may be adjusted so that the pair of concave portions 127 are arranged in the vertical direction at the center in the left-right direction of the outer peripheral portion 123. .

  As shown in FIG. 9, the outlet 124 is formed in an elliptical shape. The area A2 of the outlet 124 when viewed in a cross section is larger than the area A1 of the inlet 122. The inner wall of the airflow discharge unit 120 in the vicinity of the outlet 124 is formed in a reverse taper shape toward the outlet 124. Since the airflow travels along the wall due to the Coanda effect, a wide swaying wind can be obtained by forming the airflow discharge unit 120 in such a shape.

[Outlet configuration]
FIG. 10 is an exploded perspective view showing the inflow port of the air flow discharge unit of the fluid device according to the embodiment of the present invention.

  As shown in FIG. 10, the protrusion 126 of the airflow discharge unit 120 serves as an inflow port 122 into which the airflow from the main body 110 flows. In this example, the protrusion 126 is combined with a member on the outflow port 124 side by screwing, and the protrusion 126 of the airflow discharge unit 120 is fitted into the air outlet 112 of the main body 110, whereby the airflow discharge unit 120. Is mounted on the main body 110.

[Configuration of internal flow path]
FIG. 11 is a cross-sectional perspective view showing the configuration on the inlet side of the airflow discharge unit of the fluid device according to the embodiment of the present invention. FIG. 12 is a cross-sectional view of the inlet side of the airflow discharge unit of the fluid device according to the embodiment of the present invention.

  The airflow discharge unit 120 of the fluid device 100 according to the embodiment of the present invention includes two flow paths 200 along the outer periphery of the inflow port 122. The channel 200 is defined by a wall 230 including a plurality of ribs 210 and has two openings. As shown in FIG. 12, in this example, two channels 200 are provided approximately symmetrically in the left and right when viewed in cross section.

  The wall part 230 between the adjacent ribs 210 may be constituted by a straight line or a curved line when viewed in the cross section shown in FIG. Regardless of whether the wall 230 between the adjacent ribs 210 is a straight line or a curved line, the flow path 200 is configured to have a plurality of corners due to the presence of the rib 210. As a result, the flow path 200 generates a finely bent airflow.

  In this example, as shown in FIG. 12, seven ribs 210 are alternately formed on the left wall defining the flow path 200 and the right wall defining the flow path when viewed in cross section on the inlet side. Has been. The number and arrangement of the ribs 210 are not limited to this, and may be determined according to the size of the airflow discharge unit 120 and the flow path 200. Specifically, the number of ribs 210 may be determined so that the flow path length of the flow path 200 is as long as possible while considering that the resistance of the fluid in the flow path 200 does not become too large. Further, the arrangement of the ribs 210 may not be left and right alternately.

  Further, the rib 210 is formed so as to have a convex shape larger than a half of the width W of the flow path when viewed in a cross section of the inflow port. By forming in such a size, it is possible to prevent the fluid passing through the flow path 200 from flowing along the curve on the outer periphery of the airflow discharge unit 120, and to increase the flow path length more reliably.

  The flow path 200 may be formed integrally with the airflow discharge unit 120 or may be manufactured separately from the airflow discharge unit 120 and then attached to the airflow discharge unit 120.

<Operation of fluidic device 100 with airflow discharge unit 120 attached>
The airflow that has flowed into the airflow discharge unit 120 from the inflow port 122 travels along either the upper portion 140 or the lower portion 142 of the outflow port 124 due to the Coanda effect. The Coanda effect is a phenomenon in which when a curved wall is present near a gas or liquid jet, the jet tends to flow in a direction along the curved surface of the wall.

  For example, when the airflow advances along the upper part 140, the pressure near the opening P2 and the opening P4 is lower than the pressure near the opening P1 and the opening P3. Since the gas flows from a higher pressure to a lower pressure, in the left channel 200, the gas flows from the opening P1 to the opening P2, and in the right channel 200, the gas flows from the opening P3 to the opening P4. Airflow is generated.

  This continues, and the pressure near the opening P2 and the opening P4 and the pressure near the opening P1 and the opening P3 are reversed, and the pressure near the opening P2 and the opening P4 becomes the opening P1 and the opening. When the pressure is higher than the pressure in the vicinity of P3, the airflow that has traveled along the upper portion 140 travels along the lower portion 142.

  When the air flow proceeds along the lower portion 142, the pressure in the vicinity of the opening P1 and the opening P3 becomes lower than the pressure in the vicinity of the opening P2 and the opening P4. Since the gas flows from a higher pressure to a lower pressure, the air flow is from the opening P2 to the opening P1 in the left channel 200, and from the opening P4 to the opening P3 in the right channel 200. Arise.

  This continues, and the pressure near the opening P2 and the opening P4 and the pressure near the opening P1 and the opening P3 are reversed, and the pressure near the opening P1 and the opening P3 becomes the opening P2 and the opening. When the pressure is higher than the pressure in the vicinity of P4, the airflow that has traveled along the lower portion 142 again travels along the upper portion 140.

  By repeating this operation, the airflow X along the upper portion 140 and the airflow Y along the lower portion 142 are continuously switched alternately at a constant speed, and the airflow passing through the airflow discharge unit 120 moves in the direction of the upper portion 140 and the lower portion. Sway slowly in the direction of 142.

  The flow path 200 of the airflow discharge unit 120 of the fluid device 100 according to the embodiment of the present invention is finely bent due to the presence of the plurality of ribs 210 on the wall 230 that defines the flow path 200. Therefore, the flow path length can be increased even in a downsized airflow discharge unit. As the flow path length of the flow path 200 increases, the direction of the airflow is switched slowly due to the pressure change described above. Therefore, the airflow crossing the airflow discharge unit 120 is slowly shaken in the direction of the upper part 140 and the direction of the lower part 142, and the effect of the shaking can be enhanced.

  By the way, when the conventional technique which focuses on instantly switching the direction of the airflow is used, the flow path is formed in a curved line, so that the airflow is strengthened and the airflow is quickly switched. For this reason, the user feels that the wind is experientially spreading.

  However, since the airflow discharge unit 120 of the fluid device 100 according to the embodiment of the present invention includes the flow path 200 having the above-described structure, the airflow is slowly shaken. Therefore, as compared with the case where the above-described conventional technique is used, the airflow is slowly shaken, so that the user can easily feel the “fluctuation” of the wind.

  As described above, when the airflow discharge unit 120 of the fluid device 100 according to the embodiment of the present invention is used, the airflow crossing the airflow discharge unit 120 is slowly shaken in the direction of the upper part 140 and the direction of the lower part 142. Therefore, it is possible to obtain a wind with a uniform intensity and a “swaying” effect of the wind from the fluid device.

(Second Embodiment)
FIG. 13 is a cross-sectional perspective view showing the configuration of the inlet side of the airflow discharge unit of the fluid device according to the second embodiment of the present invention. FIG. 14 is a cross-sectional view of the airflow discharge unit of the fluid device according to the second embodiment of the present invention on the inlet side.

  The airflow discharge unit 520 of the fluid device 500 according to the second embodiment of the present invention is different from the airflow discharge unit 120 of the fluid device 100 in the shape of the flow path, particularly the shape and arrangement of the wall portion.

  An airflow discharge unit 520 of a fluid device according to the second embodiment of the present invention includes a flow path 600. The flow path 600 is defined by the outer wall 605 and the wall portion 630 of the airflow discharge unit 520. The flow path 600 may be defined only by the wall portion 630. As shown in FIG. 12, in this example, two channels 200 are provided approximately symmetrically in the left and right when viewed in cross section.

  In this example, the channel 600 is formed in a shape bent twice. Specifically, the flow path 600 is first formed from the opening P1 and the opening P5 along the outer periphery of the airflow discharge unit 520, and is bent by the bent portion P2 and the bent portion P6 to change the direction by about 180 degrees. Furthermore, it is bent at the bent portion P3 and the bent portion P7, the direction is changed by about 180 degrees, and the opening portion P4 and the opening portion P8 are formed. The number of times the flow path 600 is bent is not limited to this, and may be determined according to the size of the airflow discharge unit 520 or the flow path 600. Specifically, the number of times the flow path 600 is bent may be determined so that the flow path length of the flow path 600 is as long as possible while considering that the resistance of the fluid in the flow path 600 does not become too large. . Further, the angle at which the direction is changed at the bent portion may not be 180 degrees, and may be determined according to the size and shape of the airflow discharge unit 520.

  The wall 630 may be configured with a straight line or a curved line when viewed in the cross section shown in FIG. Regardless of whether the wall portion 630 is configured by a straight line or a curved line, the flow path 600 is configured to have a plurality of corners due to the presence of the bent portions P2, P3, P6, and P7. Thereby, the flow path 600 generates a largely bent airflow.

  The flow path 600 may be formed integrally with the airflow discharge unit 520 or may be manufactured separately from the airflow discharge unit 520 and then attached to the airflow discharge unit 520.

<Operation of Fluid Device with Airflow Discharge Unit 520>
The airflow that flows into the airflow discharge unit 520 from the inflow port 122 travels along either the upper portion 140 or the lower portion 142 of the outflow port 124 due to the Coanda effect. For example, when the airflow is traveling along the upper part 140 of the outlet 124, the pressure near the opening P4 and the opening P8 is lower than the pressure near the opening P1 and the opening P5. Since the gas flows from the higher pressure side to the lower pressure side, the airflow flows from the opening P1 to the opening P4 in the left channel 600, and from the opening P5 to the opening P8 in the right channel 600. Arise.

  This continues, and the pressure near the opening P4 and the opening P8 and the pressure near the opening P1 and the opening P5 are reversed, and the pressure near the opening P4 and the opening P8 becomes the opening P1 and the opening. When the pressure is higher than the pressure in the vicinity of P5, the airflow that has traveled along the upper portion 140 travels along the lower portion 142.

  When the air flow proceeds along the lower part 142, the pressure near the opening P1 and the opening P5 becomes lower than the pressure near the opening P4 and the opening P8. Since the gas flows from a higher pressure to a lower pressure, an air flow is generated from the opening P4 to the opening P1 in the left channel 600, and from the opening P8 to the opening P5 in the right channel 600. Arise.

  This continues, and the pressure near the opening P4 and the opening P8 and the pressure near the opening P1 and the opening P5 are reversed, and the pressure near the opening P1 and the opening P5 becomes the opening P4 and the opening. When the pressure becomes higher than the pressure in the vicinity of P8, the airflow that has traveled along the lower portion 142 again travels along the upper portion 140.

  By repeating this operation, the airflow X along the upper portion 140 and the airflow Y along the lower portion 142 are continuously switched alternately at a constant speed, and the airflow passing through the airflow discharge unit 520 moves in the direction of the upper portion 140 and the lower portion. Sway slowly in the direction of 142.

  The flow path 600 of the airflow discharge unit 520 of the fluid device according to the embodiment of the present invention includes a plurality of bent portions that greatly change the direction of the airflow, and is formed into a bent shape. Even in the air flow discharge unit, the flow path length can be increased. As the flow path length of the flow path 600 becomes longer, the change of the direction of the airflow due to the pressure change described above is performed slowly. Therefore, the airflow crossing the airflow discharge unit 520 is slowly shaken in the direction of the upper part 140 and the direction of the lower part 142, and the effect of shaking can be obtained.

  The airflow discharge units 120 and 520 of the fluid device 100 according to the above-described embodiment have the following characteristics.

The airflow discharge unit 120 (520) of the fluid device 100 includes an inlet 122 into which the airflow flows, an outlet 124 from which the airflow flows out, a first flow path connecting the inlet 122 and the outlet 124, and the first flow path. A second flow path 200 (600) that is provided outside the flow path, has two openings, and communicates with the first flow path through the two openings. The distance L ₁ between the two openings of the flow path 200 (600) is a line parallel to the peripheral wall forming the first flow path and the length L of the imaginary line connecting the two openings. Longer than ₂ .

  As mentioned above, although preferable embodiment of this invention was described in detail, the scope of rights of this invention is not limited to this.

  For example, when the airflow discharge units 120 and 520 of the fluid device 100 according to the embodiment of the present invention are used, even when the amount of hair and the amount of fibers are large or when the hair and fibers are long, the inner hair and fibers are efficiently blown. In addition, since the user can feel the movement of the wind, it is particularly suitable for hair dryers, dryers for dryers, etc., but also applies to other items that have similar demands. be able to.

  In addition, when the airflow discharge units 120 and 520 of the fluid device 100 according to the embodiment of the present invention are used, the air that gently spreads and sways can be sent, which is particularly suitable for a fan or the like, but similar to this. It can also be applied to other things in demand.

  Further, the airflow discharge unit according to the embodiment of the present invention may be incorporated in the wind outlet 112 of the fluid device 100 as well as an attachment attached to the tip of the wind outlet 112 of the main body 110.

  In addition, the left and right flow paths 200 and 600 of the air flow discharge units 120 and 520 of the fluid device 100 according to the embodiment of the present invention are symmetrical to each other, but the air flow can be easily controlled. The left and right flow paths 200 and 600 may be asymmetric within a range that does not hinder the switching of the direction of the airflow. Furthermore, although the two flow paths 200 and 600 can be provided to effectively swing the airflow up and down, it is not essential, and if the switching of the direction of the airflow upward and downward can be realized, the flow path 200 can be realized. , 600 may be one.

Fluid equipment: 100, body: 110, wind outlet: 112, air flow discharge unit: 120, 520, inlet: 122, outer periphery: 123, outlet: 124, protrusion: 126, recess: 127, upper part: 140 , Lower part: 142, flow path: 200, 600, rib: 210, wall part: 230, 630, outer wall: 605

Claims (11)

An inlet through which airflow flows,
An outlet for flowing out the airflow;
A first flow path connecting the inlet and the outlet;
A second flow path provided outside the first flow path, having two openings, and communicating with the first flow path through the openings;
The air flow discharge unit, wherein the second flow path is defined by a wall portion including a plurality of ribs, and the outflow side of the second flow path is closed by an outer peripheral portion that defines the outflow port.   The airflow discharge unit according to claim 1, wherein the second flow path is configured to have a plurality of corners.   The airflow discharge according to claim 1 or 2, wherein the ribs are alternately formed on a first wall portion that defines the second flow path and a second wall portion that faces the first wall portion. unit.   The said 2nd flow path is an airflow discharge unit of any one of Claims 1-3 with which two said 2nd flow paths are provided symmetrically when it sees in a cross section. The air flow discharge unit according to claim 4, wherein the outer peripheral portion defining the outflow port is formed with a pair of recesses recessed toward the inflow port side by side in the left-right direction at a central portion in the vertical direction.   The airflow discharge unit according to any one of claims 1 to 5, wherein the rib is formed to have a convex shape larger than a half of a width of the second flow path. An inlet through which airflow flows,
An outlet for flowing out the airflow;
A first flow path connecting the inlet and the outlet;
A second flow path provided outside the first flow path, having two openings, and communicating with the first flow path through the openings;
The second flow path is defined by a wall including a plurality of bent portions that change the direction of the airflow passing through the second flow path, and the second flow path is formed by an outer peripheral portion that defines the outflow port. Airflow discharge unit with closed outlet.   The air flow discharge unit according to claim 7, wherein the second flow path is configured to have a plurality of corners.   The airflow discharge unit according to any one of claims 1 to 8, which is attached to a hair dryer. The airflow discharge unit according to any one of claims 1 to 9,
A fluid device comprising: a main body that flows an air flow into the inflow port of the air flow discharge unit. An inlet through which airflow flows,
An outlet for flowing out the airflow;
A first flow path connecting the inlet and the outlet;
A second flow path provided outside the first flow path, having two openings, and communicating with the first flow path through the openings;
The second flow path is defined by a wall including a plurality of ribs;
The distance L1 that is the distance between the two flow paths and the distance between the two openings is relative to the peripheral wall that forms the first flow path that connects the two openings. The airflow discharge unit is longer than the length L2 of the parallel imaginary line.

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