JPH0524500U - Blois Juan - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a blower fan that is small in hovercraft and can be lifted and lowered with the same fan. [Composition] A blower fan in which a centrifugal discharge blade and a vertical discharge blade are integrally formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blower fan suitable for use in a hovercraft.

[0002]

[Prior Art]

 In the past, in a hovercraft or the like, it was usual to use two fans for sending propulsion air and floating air, and for that purpose, two prime movers were mounted. This type naturally had the disadvantage of increasing the weight due to the prime mover. There was also a form in which the fan was installed with one prime mover and the air was split by a duct etc. with one prime mover to obtain the levitation force and propulsion force. It was complicated and difficult to design.

[0003]

[Problems to be solved by the device]

 In the present invention, by constructing a blower fan that can be driven by a single prime mover and can obtain propulsive force and levitation force, it is possible to reduce the weight of the hovercraft and provide a small hovercraft that easily balances propulsive force and levitation force. It is in.

[0004]

[Means for Solving the Problems]

 In the present invention, in order to obtain propulsive force and levitation force with one blower fan, blades for discharging air horizontally to the prime mover axis and blades for discharging air vertically are integrally formed on one axis. And

[0005]

[Action]

 By adopting the above-mentioned means, the blower fan of the present invention can obtain the hovercraft propulsion force by the centrifugal force direction discharge vanes and the hovercraft lift force by the vertical direction discharge vanes by driving one motor.

[0006]

Embodiment An embodiment will be described below with reference to the drawings. 1 is an assembly view of a blower fan showing an embodiment of the blower fan of the present invention, and FIG. 2 is a partially exploded perspective view of the assembly view of FIG. In FIGS. 1 and 2, reference numeral 4 denotes a blower for centrifugal discharge, which is used for propulsion in the drawings and is formed in an annular shape with a large number of discharge vanes 4A provided around it. A duct 3 having a tubular shape and a flange portion formed at the lower end is fixed on the blower 4. Further, a blower capable of discharging air in the axial direction, that is, the ascending / descending direction in the drawing is rotatably inserted in the blower 4. The blower 5 has a fan-shaped discharge blade 5A, and the blower 5 is fixed to the output shaft of the prime mover 1 fixed by a fixing means (not shown). The tubular duct 2 is fixed inside the duct 3 by means not shown. The duct 2 guides the air in the axial direction of the blower 5, that is, in the rising and falling directions in the figure. In addition, as another embodiment, a blower fan having the shape shown in FIG. 3 can be constructed. In this embodiment, the blower 5 is used for raising and lowering, and the blower 4 is used for centrifugal direction, that is, for propulsion. However, the reverse is also possible. May be. Furthermore, if each blower has a variable pitch, it will greatly contribute to efficiency improvement.

[0007]

[Effect of the device]

 Since the present invention has the above configuration, it has the following excellent effects. (1) One power source for propulsion and ascent / descent is used, which makes it lightweight and compact. (2) A highly efficient hovercraft can be provided by appropriately designing the propulsion and discharge vanes and by making the pitch variable.

[Brief description of drawings]

FIG. 1 is an assembly view showing an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view of the assembly view shown in FIG.

FIG. 3 shows another embodiment of the present invention.

[Explanation of symbols]

 1. Prime mover 2. Duct 3. Duct 4. Blower 5. Blower 4A. Discharge blade 5A. Discharge blade

Claims (1)

[Scope of utility model registration request] 1. A blower fan used for a hovercraft for obtaining a propulsive force and a levitation force, wherein a centrifugal-direction discharge blade and a vertical-direction discharge blade are integrally formed.