JP6257484B2 - Blower - Google Patents

Description

  The present invention relates to a blower that blows air.

  If a door is not provided at the entrance to make it easier to enter and exit a space, the purpose is to suppress the inflow and outflow of air between the space and the outside, block dust intrusion, and maintain temperature and humidity. An air blower dedicated to the formation of an air flow that flows so as to cover the doorway, that is, a so-called air curtain flow, is installed at the doorway.

  When installing a blower for forming an air curtain flow at the entrance / exit, if it is assumed that outside wind from outside the space enters the space, it is assumed that the air curtain flow is pushed by the outside wind. The air blower is installed so that the air curtain flow is blown outward so as not to lose the wind.

  Patent Document 1 discloses a blower that is installed on a wall and changes an air blowing angle by tilting an outer box. Patent Document 2 discloses a blower in which a wind direction changing louver is provided at a blowout port, and the blowing direction is changed by changing the angle of the wind direction changing louver.

JP-A-9-60942 Japanese Patent No. 3013686

  However, the blower disclosed in Patent Document 1 changes the air blowing angle by tilting the outer box. Therefore, in order not to interfere with the outer box inclined to the wall on which the blower is installed, the blowing angle cannot be increased beyond a certain angle.

  In addition, when the outer box is tilted so that air is blown away from the wall where the blower is installed, the air inlet to the air blower is obstructed because the air inlet of the air blower approaches the wall. There has been a problem that the speed and air volume of the air flow blown out from the blower are reduced.

  If the fan is installed away from the wall, it is possible to prevent the outer box and the wall from interfering with each other, and to prevent the air flow speed and air volume from decreasing, but the doorway provided on the wall where the fan is installed Therefore, the effect of covering the doorway with the air curtain flow is reduced.

  Moreover, although the air blower disclosed by patent document 2 has changed the ventilation direction by providing the wind direction change louver in the blower outlet, pressure loss generate | occur | produces because the direction of an air flow is forcibly changed by the louver. To do. Furthermore, since the nozzle cross-sectional shape must be adapted to the entire angle range of the louver, the ideal nozzle cross-sectional shape for creating an ideal air path that increases the reach of the blown air flow It can not be. Accordingly, there is a problem that the air flow becomes weaker and the reach distance becomes shorter than that of a blower without a louver.

  This invention is made in view of the above, Comprising: The ventilation which blows off the airflow in the direction away from the installed wall, without reducing an airflow or producing interference with the installed wall The object is to obtain a device.

  In order to solve the above-described problems and achieve the object, the present invention is directed to a blower unit including an axial flow fan that generates an air flow, and air in a direction different from the axial direction of the axial flow fan. A blower unit having a blowout unit for blowing out a flow, the blowout unit opening in a direction along the axial direction of the axial flow blower, and an intake port for taking in an air flow, and an axial direction of the axial flow blower The distance between the first nozzle opened in the direction having an inclination and the direction having the same inclination as the first nozzle with respect to the axial direction of the axial blower, and the axial blower in the axial direction of the axial blower, A second nozzle larger than the first nozzle, a ventilation path connecting the first nozzle and the second nozzle and the intake port, a first rectifying plate installed in a portion of the ventilation path leading to the first nozzle, and a ventilation path Part leading to the second nozzle And the tip of the second rectifying plate on the axial flow fan side reaches the upstream side in the air flow blowing direction from the tip of the first rectifying plate on the axial flow fan side. It is characterized by that.

  According to the present invention, there is an effect that it is possible to obtain a blower that blows out an air flow in a direction away from the installed wall without reducing the air flow or causing interference with the installed wall. Play.

The perspective view which shows schematic structure of the air blower which concerns on Embodiment 1 of this invention. 6-side view of the air blower according to Embodiment 1 External view of the air blower according to Embodiment 1 as seen from the direction of air flow. The longitudinal cross-sectional view of the air blower concerning Embodiment 1 Cross-sectional view of the blower according to Embodiment 1 The 3rd page figure of the 1st baffle plate provided in the ventilation path inside the air blower which concerns on Embodiment 1. FIG. The 3rd page figure of the 2nd baffle plate provided in the ventilation path inside the air blower which concerns on Embodiment 1. FIG. The schematic diagram which shows the state which installed the air blower which concerns on Embodiment 1 in the wall surface of the entrance / exit of space Longitudinal sectional view of a blower according to Embodiment 2

  Hereinafter, a blower according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a schematic structure of a blower according to Embodiment 1 of the present invention. 2 is a six-side view of the air blower according to Embodiment 1, FIG. 2 (a) is a top view, FIG. 2 (b) is a left side view, FIG. 2 (c) is a front view, and FIG. d) is a right side view, FIG. 2 (e) is a rear view, and FIG. 2 (f) is a bottom view. FIG. 3 is an external view of the air blower according to Embodiment 1 as seen from the direction of air flow. FIG. 4 is a longitudinal sectional view of the blower. FIG. 5 is a cross-sectional view of the blower according to Embodiment 1, and shows a cross section taken along the line VV in FIG. FIG. 6 is a three-side view of the first rectifying plate provided in the ventilation path inside the blower according to Embodiment 1, FIG. 6 (a) is a top view, FIG. 6 (b) is a front view, FIG. 6 (c) is a right side view. FIG. 7 is a three-side view of the second rectifying plate provided in the ventilation path inside the blower according to Embodiment 1, FIG. 7 (a) is a top view, FIG. 7 (b) is a front view, FIG. 7 (c) is a right side view.

  The blower device 20 includes an axial blower 1a that blows downward, a blower unit 1 provided at the top, a blowout unit 2 having a ventilation path 6 through which an airflow generated by the blower unit 1 passes, and a wall surface. And mounting legs 3 used for mounting. The axial blower 1 a includes a motor 10, a propeller fan 11 that is rotatably attached to a rotation shaft of the motor 10, and a protective net 12 that covers the propeller fan 11. In the state where the rotating shaft of the motor 10 extends in the vertical direction, the axial blower 1a sucks air outside the apparatus through the upper protective mesh 12 and rotates downward as the propeller fan 11 is rotated by the rotation of the motor 10. Is generated. An arrow R in FIG. 4 indicates the rotation direction of the propeller fan 11.

  The installation leg 3 is a fixing means for fixing the blower 20 to the wall surface in a state where the axial direction of the axial blower 1a is the vertical direction. Therefore, in a state where the blower 20 is fixed to the wall surface by the installation leg 3, the blower unit 1 sucks air vertically downward through the protective mesh 12, and generates an air flow that flows vertically downward by the propeller fan 11.

  The blowing unit 2 includes an intake port 2a that takes in an air flow generated by the blower unit 1, and a nozzle that forms an air curtain flow by blowing the air flow taken from the intake port 2a obliquely downward with respect to the vertical direction. The ventilation path 6 connecting the intake port 2a and the nozzle is provided. The nozzle includes a first nozzle 4 and a second nozzle 5 each having an elongated opening. The first nozzle 4 is provided with a plurality of plate-shaped rectifying plates 8a that are arranged at equal intervals in the longitudinal direction of the first nozzle 4 in parallel. The second nozzle 5 is provided with a plurality of plate-like rectifying plates 8b which are arranged at equal intervals in the longitudinal direction of the second nozzle 5 in parallel. The rectifying plate 8 a is a first rectifying plate installed in a portion of the ventilation path 6 that communicates with the first nozzle 4, and the rectifying plate 8 b is a second rectifying plate installed in a portion of the ventilation path 6 that communicates with the second nozzle 5. It is. As will be described later, the height of the current plate 8a is different from the height of the current plate 8b.

  The blowing unit 2 has a box shape and has an inclined surface 2d that connects the lower surface 2b and the front surface 2c, and the inclined surface 2d is inclined so that the front side of the blower 20 becomes higher. In addition, on the inclined surface 2d, the first nozzle 4 is disposed in the front and the second nozzle 5 is disposed in the rear. Therefore, the distance from the blower unit 1 is greater in the second nozzle 5 than in the first nozzle 4. As for the 1st nozzle 4 and the 2nd nozzle 5, the opening part is formed in the inclined surface 2d. The air flow that has passed through the ventilation path 6 is blown out from the first nozzle 4 or the second nozzle 5 as an air curtain flow and obliquely downward on the front side. As an example, the inclination angle of the air curtain flow blowing direction with respect to the vertical direction is 30 °.

  The ventilation path 6 includes an air path 6a that is substantially equal to the width of the blower unit 1, an air path 6b that is narrower than the width of the air path 6a, and is connected to the opening of the first nozzle 4 and the opening of the second nozzle 5. An air passage 6c that connects the passage 6a and the air passage 6b is provided. The air passage 6c has an inclined shape in which the cross-sectional area gradually decreases in order to connect to the air passage 6b, that is, a so-called throttle shape. Since the air passage 6c has a throttle shape, an air flow is smoothly guided from the air passage 6a to the air passage 6c, pressure is generated in the air passage 6c, and the air flow is uniformly supplied to the air passage 6b by the generated pressure. Is sending.

  A guide 7 for diverting air from the air path 6 c to the first nozzle 4 and the second nozzle 5 is provided in the air path 6 b so as to be positioned between the first nozzle 4 and the second nozzle 5. . The cross-sectional shape of the guide 7 is a shape in which the width on the upstream side of the air flow to be ventilated is narrow, and has a shape extending in parallel with the longitudinal direction of the first nozzle 4 and the second nozzle 5.

  That is, the air path 6b is opened in the inclined surface 2d of the blowing unit 2, and the first nozzle 4 and the second nozzle 5 are formed by arranging the guide 7 in the center.

  A rectifying plate 8 a provided in a portion of the air passage 6 b that communicates with the first nozzle 4 extends from the opening of the first nozzle 4 to the inside of the blowing unit 2. A rectifying plate 8 b provided at a portion of the air passage 6 b that communicates with the second nozzle 5 extends from the opening of the second nozzle 5 to the inside of the blowing unit 2. The length of the air flow direction of the rectifying plate 8a is shorter than the length of the air flow direction of the rectifying plate 8b. For this reason, in the flow direction of the air flow, the inner front end 8a1 which is the front end of the rectifying plate 8a on the axial flow fan side has reached approximately the same position as the inner front end 71 which is the front end of the guide 7 on the axial flow fan side. On the other hand, the inner front end 8 b 1, which is the front end of the rectifying plate 8 b on the axial flow fan side, reaches farther than the inner front end 71 of the guide 7.

  As described above, the air curtain flow from the first nozzle 4 and the second nozzle 5 having different distances from the blower unit 1 by positioning the inner tip 8b1 of the rectifying plate 8b behind the inner tip 8a1 of the rectifying plate 8a. Thus, the wind speed distributions of the airflows blown out can be made equal to each other.

  In addition, since the rectifying plate 8a and the rectifying plate 8b are provided at equal intervals, the swirl component of the air flow generated because the axial blower 1a is used in the blower unit 1, the first nozzle 4 or The wind speed in the longitudinal direction of the air flow blown out from the second nozzle 5 as an air curtain flow can be made uniform.

  Further, as shown in FIG. 6 and FIG. 7, an inclination is made in the vicinity of the inner tip 8 a 1 of the rectifying plate 8 a and the inner tip 8 b 1 of the rectifying plate 8 b so as to face the rotational direction of the axial blower 1 a of the blower unit 1. The inclined portions 8ac and 8bc are provided, and the inclination angle of the inclined portions 8ac and 8bc is set equal to the swirl component of the air flow so that the air flow flows along the inclined portions 8ac and 8bc, thereby reducing the pressure loss. I am letting.

  In FIG. 5, the propeller fan 11 is virtually shown, so that the rotation direction of the propeller fan 11, the direction of the swirl component of the airflow generated by the propeller fan 11, and the inclination direction of the inclined portions 8ac and 8bc are illustrated. Is visualized. Note that an arrow A in FIG. 5 indicates the rotation direction of the propeller fan 11.

  In addition, although the structure which provides the rectifying plate 8a and the rectifying plate 8b in the same position of the longitudinal direction of the 1st nozzle 4 and the 2nd nozzle 5 is mentioned as an example here, the rectifying plate 8a and the rectifying plate 8b are the 1st nozzle. The longitudinal positions of the 4 and second nozzles 5 may be shifted. The optimum position of the flow straightening plates 8a and 8b for uniforming the wind speed in the longitudinal direction of the nozzle varies depending on the shape and length of the air passages 6a and 6c, and therefore the effect of uniforming the wind speed in the longitudinal direction is most effective. It is preferable to adjust the installation positions of the current plates 8a and 8b so as to be higher.

  FIG. 8 is a schematic diagram showing a state in which the blower according to Embodiment 1 is installed on the wall surface of the entrance / exit of the space. The blower 20 is installed on the wall 16 on the outdoor side of the doorway 15 of the house 17 by the installation legs 3. The blowing airflow 18 which is an airflow blown out from the blower 20 has an inclination of 30 ° with respect to the vertical direction toward the outdoor side. An air flow having an inclination with respect to the vertical direction toward the outdoor side becomes an air curtain flow and is blown out from the blower 20, so that the air curtain flow is generated in the outdoor wind 19 that tries to enter the indoor side from the outdoor side. Losing is suppressed.

Embodiment 2. FIG.
FIG. 9 is a longitudinal sectional view of the blower according to the second embodiment. In the blower device 30 according to the second embodiment, the rectifying plate 8a and the rectifying plate 8b in the first embodiment are integrated to form the rectifying plate 8c. The rectifying plate 8 c has a shape in close contact with the air passage 6 b and the guide 7. The air blower 30 according to Embodiment 2 is the same as that of Embodiment 1 except for the rectifying plate 8c.

  In the second embodiment, since the rectifying plate 8c is in close contact with the air passage 6b and the guide 7, there is no gap through which an air flow passes between the air passage 6b or the guide 7 and the rectifying plate 8c. Therefore, the air blower according to Embodiment 2 can improve the rectifying effect as compared with the air blower according to Embodiment 1.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Air blower unit, 1a Axial blower, 2 Outlet unit, 2a Intake port, 2b Lower surface, 2c Front surface, 2d Inclined surface, 3 Installation leg, 4 1st nozzle, 5 2nd nozzle, 6 Ventilation path, 6a, 6b, 6c Air path, 7 guide, 8a, 8b, 8c Current plate, 8a1, 8b1 Inner tip, 8ac, 8bc Inclined part, 10 Motor, 11 Propeller fan, 12 Protective net, 15 Entrance / exit, 16 Wall, 17 House, 18 Outlet airflow, 19 Outside wind, 20, 30 Blower.

Claims (6)

A blower device having a blower unit including an axial flow fan that generates an air flow, and a blowing unit that takes in the air flow and blows out the air flow in a direction different from the axial direction of the axial flow blower,
The blowing unit is
An intake port that opens in a direction along the axial direction of the axial flow fan and takes in the air flow;
A first nozzle opened in a direction having an inclination with respect to the axial direction of the axial blower;
An opening is made in a direction having the same inclination as the first nozzle with respect to the axial direction of the axial blower, and a distance from the axial blower in the axial direction of the axial blower is larger than that of the first nozzle. 2 nozzles,
A ventilation path connecting the first nozzle and the second nozzle and the intake port;
A first rectifying plate installed in a portion communicating with the first nozzle of the ventilation path;
A second baffle plate installed at a portion communicating with the second nozzle of the ventilation path,
The tip of the second rectifying plate on the axial flow fan side reaches the upstream side of the air flow blowing direction from the tip of the first rectifying plate on the axial flow fan side ,
The air blower characterized in that the first nozzle and the second nozzle have elongated openings parallel to each other with the longitudinal direction being a direction perpendicular to the axial direction of the axial blower.   2. The blower according to claim 1, wherein the second rectifying plate has a longer length in the blowing direction of the air flow than the first rectifying plate. A guide for diverting the air flow to the first nozzle and the second nozzle;
The second rectifying plate is arranged so that a tip on the axial flow fan side reaches an upstream side in a blowing direction of the air flow from a tip on the axial flow fan side of the guide. Item 3. A blower according to item 1 or 2 . The blower according to any one of claims 1 to 3 , wherein the first rectifying plate and the second rectifying plate are integrally formed. At least one of the first rectifying plate and the second rectifying plate has an inclined portion that is inclined in a direction opposite to the rotational direction of the axial fan in the vicinity of the tip on the axial fan side. The air blower according to any one of claims 1 to 4 . The blower according to any one of claims 1 to 5 , further comprising fixing means for installing the axial flow fan on a wall surface so that an axial direction of the axial blower is a vertical direction.

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