JPH01280699A - Blower - Google Patents

Abstract

PURPOSE:To reduce the noise and the power consumption of a blower by arranging a plurality of blades on the annular surface of a blade plate wound between and around two rotators and providing such a constitution that intake ports are provided on the inner side of the blades plate and air guiders on the outer side thereof. CONSTITUTION:When a rotator 12 is rotated, a blade plate 17 wound along its circumference thereof is rotated. In this time, air is sucked from a semiconductor suction port (a) by the blades provided between A and B, which is sucked from a semicircular suction part (b) by the blades provided between C and D, and is sucked from a rectangular suction port (c) by the blades provided between B and C, and between D and A. Air ejected from the blade plate 17 is carried to an ejection port 24 along an air guider 20. In this time, since the total area of the suction ports (a), (b), (c) is larger than the total area of a prior circular suction ports (d) and (e), the rotational speeds of the rotators 12, 21 can be slow, so that a generated noise can be lowered. In addition, since only one motor 1 is required, a manufacturing cost can be reduced.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a blower.

BACKGROUND ART Conventionally, as shown in FIGS. 4 and 5, this type of blower has centrifugal impellers 2 driven by an electric motor 1 arranged in parallel, and the suction of the centrifugal impellers is Circular suction ports d and e are provided on the side, and an air guider 4 is provided on the discharge side.
The product body 5 had a rectangular configuration.

Page 2 Problems to be Solved by the Invention In the conventional blower described above, the centrifugal impeller 2 is circular, so if the product body is rectangular, the suction port will be small relative to the front projected area. Therefore, the number of revolutions of the centrifugal impeller 2 that produces the target air volume increases, resulting in problems such as increased noise and power consumption.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a blower with low noise and low power consumption.

Means for Solving the Problems In order to solve the above problems, the present invention includes at least one set of rotors arranged at a predetermined interval, and an annular blade plate wound between and around the two rotors. A plurality of blades are disposed on the annular surface of the blade plate, a suction port is provided on the inside of the blade plate, and an air guider is provided on the outside of the blade plate.

Function: With this configuration, the air sucked through the suction port is suctioned by the blade plate, subjected to external pressure, and discharged along the air guider. At this time, the suction port is also sucked from the inside of the blade plate between the two 3-peno rotors, so it is larger than before, the number of revolutions required to obtain the target air volume is low, and noise and power can be reduced.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3. Note that the same numbers are given to the same parts as in the conventional example, and detailed explanations are omitted. In the figure, reference numeral 12 denotes a double rotor driven by the electric motor 11, which is secured to the shaft 13 of the electric motor 11 at an axial interval according to the target air volume. A ring 16 is supported on the rotor by a plurality of radial support plates 14, and the ring 15 has a large number of tooth-shaped protrusions 16 on the outside. 17 is a band-shaped blade plate made from a single plate having a large number of blades 18 and notches 19 on both sides equal to the number of blades;
It is wound around the circular ring of the rotor 12 and the same adjacent rotor 21 so that the protrusion 16 and the notch 19 match.

In the above configuration, when the rotor 12 is rotated by the electric motor 11, the blade plate 17 wound around the rotor 12 is rotated. At this time, in Figure 1, A3
The blades in between suck air through a semicircular suction port a, the blades between CD suck in air through a semicircular suction port bJJ, and the blades BC and DA suck air through a rectangular suction port C. The air still discharged from the blade 18 is carried along the air guider 20 to the discharge port 24.

At this time, since the total area of the suction ports a, b, and c is larger than the total area of the conventional circular suction ports d and e, the rotational speed of the rotors 12 and 21 can be low, and no noise is generated. It has the advantage of being small.

It also has the advantage of requiring only one electric motor, reducing manufacturing costs.

In this example, two rotors were used, but three rotors may be used.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the rotation speed of the rotor that produces the target air volume can be reduced, and the 5-vane rotor is used to reduce the noise of the product. In addition, since only one electric motor is required, costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of an air blower according to an embodiment of the present invention, Fig. 2 is a perspective view of the blade plate of the air blower, Fig. 3 is a perspective view of the rotor of the air blower, and Figs. 4 and 5 are FIG. 2 is a configuration diagram of a conventional blower. 16... Protrusion, 12, 21... Rotor, 17... Blade plate, a, b, c...
Suction port, 20... Air guider.

Claims (1)

[Claims] at least one set of rotors arranged at a predetermined interval;
A blower comprising an annular blade plate wound between and around both rotors, a plurality of blades arranged on the annular surface of the blade plate, a suction port provided on the inside of the blade plate, and an air guider provided on the outside. .