JP2010261319A - Air blower with swing function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize an air blower capable of adjusting an air-blowing quantity of a specific range, while performing constant air-blowing in a swing range, by optionally changing a swing operation speed. <P>SOLUTION: This air blower with the swing function can optionally determine an operation speed in swinging, by swinging a blowout port of an air blower body 1 at an optional angle, by the air blower body 1 turning the blowout port in the horizontal direction, an oscillating rotary shaft 11 for swinging the blowout port of this air blower body 1 in the horizontal direction, a swing arm 2 fixed to the air blower body by projecting in the radial direction of this oscillating rotary shaft 11 and a swing range speed determining means (a transmission disc 5 and a gear motor 4) for determining a swing range and a swing speed by moving the distal end of this swing arm 2. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a method of transporting internal air to a specific place and direction without a duct in a large space having a large floor area such as a factory, a hall, and a warehouse and having almost no walls that partition the inside.

  In order to blow air toward a wide object in the space, there is a method of converting the rotary motion into a reciprocating motion by a combination of a rotating part and a link and swinging the blower blowing direction at a constant cycle (swing). Are known.

  Hereinafter, the swing will be described with reference to FIGS.

  As shown in FIG. 8, the blower portion 102 of the electric fan 101 is rotatably fixed to the swing spindle 104 of the neck piece 103. Further, as shown in FIG. 9, the blower unit 102 includes a crank 105 for swinging at a predetermined swing angle, and includes a protruding shaft 106 of the crank 105 and an eccentric shaft 107 protruding from the neck piece 103. Are connected by a swing drive rod 108. When the crank 105 rotates in this state, the blower unit 102 swings by an angle determined to the left and right about the swing spindle 104.

Japanese Utility Model Publication No.59-13358

  There are the following problems in using such a conventional configuration in a large space building. That is, since the operating speed is slowed at both ends of the swing, the air flow rate is large at both ends of the swing and decreases at the center. Further, even when there is a place where it is not desired to blow as much as possible in the operating range, the amount of blown air at that part cannot be intentionally reduced. Moreover, even if it is desired to increase the air flow rate in one side direction and to reduce the air flow rate in the opposite direction, it cannot be realized.

  The present invention solves such a conventional problem, and realizes a blower capable of making the air flow rate in the swing operation range constant in any direction and increasing or decreasing the air flow rate in an arbitrary direction. The purpose is that.

  The first means for solving the object has a swing axis, a swing driving means, a swing range speed determining means for determining a swing range and a swing speed, and the driving force by the driving means is determined as a swing range speed. It is transmitted to the blower by means and a swing arm to swing the blower.

  ADVANTAGE OF THE INVENTION According to this invention, the air blower which can make the ventilation volume in a swing operation | movement range constant in any direction, or can increase or decrease the ventilation volume of arbitrary directions is realizable.

The block diagram which shows the structure of Embodiment 1 of this invention Explanatory drawing explaining the structure of the swing range speed determination means Explanatory drawing explaining the structure of the swing range speed determination means Explanatory drawing explaining the structure of the swing range speed determination means Explanatory drawing explaining the motion of the air blower by the same swing range speed determining means Configuration diagram showing how the blower body swings Graph showing the relationship between swing angle and transport air volume Configuration diagram showing conventional configuration Same part

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
The first embodiment will be described with reference to FIG.

  The blower body 1 according to the first embodiment includes a nozzle-type outlet in a cylindrical outer cylinder. An axial flow type fan is provided in the blower body 1. Further, a swinging rotation shaft 11 is provided at the lower part of the blower body 1 so that the blower body 1 can swing at a position that is substantially below the center of gravity. The swing arm 2 has a rod-like shape, one of which is fixed to the blower main body 1, and a groove trace projection 3 is provided at the other end so as to be located away from the swinging rotation shaft 11. Yes. On the other hand, the swing range speed determining means includes a transmission disk 5 that serves as a guide for the tip (groove trace protrusion 3) of the swing arm 2 and a gear motor 4 that serves as a drive means for performing a swing. The transmission disk 5 has a center as a rotation axis, and the gear motor 4 is connected to the rotation axis so as to be rotatable. Further, the surface of the transmission disk 5 has a groove 6 for determining the behavior of the swing operation, and the groove trace protrusion 3 enters the groove 6. The groove 6 draws a closed locus around the rotation axis of the transmission disk 5.

  According to the above configuration, when the gear motor 4 is driven and the transmission disk 5 rotates while the blower body 1 is in operation, the groove trace protrusion 3 in the groove 6 of the transmission disk 5 corresponds to the path of the groove 6. Move. As a result, the blower body 1 is swung through the swing arm 2. Since the air blower is operating in this state, air can be blown within the swing operation range.

  A method for designing a swing motion will be described with reference to FIG. FIG. 2 is a plan view of the transmission disk 5 provided with the grooves 6. Reference numeral 7 denotes a movement trajectory mark for every 1 / 16th rotation of the groove trace protrusion 3 in the transmission disk 5. The position of the groove trace protrusion 3 is determined every time the transmission disk 5 is rotated by 1/16, and the shape of the groove 6 is determined by connecting them continuously. The groove 6 is formed as one ring-shaped ring, and the swing position is determined by the distance from the rotary shaft 12 of the transmission disk 5 to one point where the groove 6 is located. According to the groove 6 in FIG. 2, the distance from the rotary shaft 12 to a certain point of the groove 6 is reduced or extended by the same distance every 1/16 rotation. That is, uniform air blowing can be performed in all directions without slowing the operation at both ends of the swing. Here, the angle a is a swing angle. The swing angle a is realized by the groove trace protrusion 3 following the movement locus b along the shape of the groove 6. Further, the swing operation can be determined more precisely by making the number of divisions per rotation of the transmission disk 5 finer.

Next, the relationship between the swing angle and the conveyance air volume is shown in FIG. The conveyance air volume is the air volume that passes through a point at a distance L from the discharge port of the blower, and corresponds to the product of the area through which the wind passes and the wind speed. In the experimental example of FIG. 7, a rated air volume of 1.5 m ³ / s (wind speed immediately after the discharge port: 12 m / s) was used. As can be seen from FIG. 7, at the point where the distance from the discharge port is 30 m, the swing angle a is 5 to 50 degrees and the conveying air flow is 30 m ³ / s or more. Further, it can be seen that when the swing angle a is 10 to 40 degrees, it is 35 m ³ / s or more. That is, by setting the swing angle a in the range of 5 degrees to 50 degrees, a larger air blowing effect can be obtained, and more preferably 10 degrees to 40 degrees. This is because when the nozzle type blower is operated, air is sent out while attracting surrounding air, but more air is conveyed by swinging. However, if the swing angle is increased, the time for one cycle is constant, so the time for blowing air in a certain direction is shortened and the air flow becomes intermittent. Therefore, it does not contribute to the overall conveyance air volume. On the other hand, if the swing angle is reduced, the amount of air to be attracted is reduced, so that the amount of transport air is also reduced.

  By making the groove 6 have two circumferential apexes as shown in FIG. 3, the swing operation can be performed twice while the gear motor rotates once. By setting the number of vertices to an arbitrary number, a plurality of swing operations can be performed in accordance with the number of vertices during one rotation of the gear motor.

  By making the shape of the groove 6 as shown in FIG. 4, the speed of the swing can be increased in the high speed section d and the speed of the swing can be decreased in the low speed section e while the gear motor rotates by half. . The same is true for the remaining half rotation. FIG. 5 illustrates the movement of the blower main body 1 at this time. Thus, by arbitrarily curving the shape of the groove 6, the swing operation in an arbitrary range can be slowed or accelerated within the swing operation range.

  In the description, the configuration for determining the swing angular velocity is a configuration in which the groove 6 is cut in the transmission disk 5 and the groove trace protrusion 3 moves along the groove 6. As long as the position can be determined, for example, a cam or the like may be used instead of the groove 6.

  As shown in FIG. 6, the rotation of the gear motor 4 is transmitted to the plurality of transmission disks 5 via the rotation transmission shaft 9, so that a plurality of blowers can be operated in a similar manner by one gear motor or different swing operations for each unit. Can be made.

  In a large space with almost no walls that divide the interior, the internal air can be transported to a specific location and direction without a duct, so it can be widely applied to facilities with large floor areas such as factories, halls, and warehouses. it can.

DESCRIPTION OF SYMBOLS 1 Blower body 2 Swing arm 3 Groove trace protrusion 4 Gear motor 5 Transmission disk 6 Groove 7 Movement track mark for every 1/16 rotation 8 Circumferential apex 9 Rotation transmission shaft 11 Swing rotation shaft 12 Rotation shaft a Swing angle b Movement trajectory c Transmission disk rotation direction d High speed section e Low speed section

Claims (8)

A blower body with the blower outlet directed horizontally, a shaft for swinging the blower outlet of the blower body in the horizontal direction, a swing arm protruding in the radial direction of the shaft and fixed to the blower body, and the swing A swing range speed determining means for determining the swing range and swing speed by moving the tip of the arm, and the swing range speed determining means can swing the blower outlet of the blower at an arbitrary angle, and A blower with a swing function, characterized in that the operation speed can be arbitrarily determined. The swing range speed determining means includes a disc-shaped swing arm guide and a driving means for rotating the swing arm guide, and the swing arm guide has a closed locus centering on the rotation axis of the driving means. The blower with a swing function according to claim 1, wherein the tip of the swing arm moves along the trajectory. The blower with a swing function according to claim 1 or 2, wherein an angle for swinging the outlet is in a range of 5 to 50 degrees. The swing arm guide is provided with a plurality of circumferential vertices, and the outlet performs a swing motion a plurality of times while the swing range speed determining means makes one rotation. A blower with a swing function described in 1. The blower with a swing function according to any one of claims 1 to 4, wherein the swing arm guide changes a swing operation speed by adjusting an inclination in which a trajectory approaches or moves away from a rotation axis of the drive unit. The swing function according to any one of claims 1 to 5, wherein the swing arm guide is provided with a closed groove on the disk, and a tip of the swing arm moves along the closed groove. With blower. The blower with a swing function according to any one of claims 1 to 5, wherein the swing arm guide is a disk having a corrugated outer periphery, and a tip of the swing arm moves along the outer periphery of the disk. The blower with a swing function according to any one of claims 1 to 7, comprising a plurality of blower main bodies, a swing range determining means provided in each of the blower main bodies, and a single drive means, wherein the drive A fan with a swing function having a transmission shaft for transmitting the driving force of the means to each swing range determining means provided in the fan with a swing function.

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