JPS62126300A - Blower with filter - Google Patents

Abstract

PURPOSE:To improve the dust collecting efficiency by mounting a motor in a recess below the middle projecting portion of an impeller and disposing both a bowl-shaped external guide covering a blade, and a filter at the outlet port. CONSTITUTION:A motor 3 is mounted in a recess below the middle projecting portion of an impeller 11, and a bowl-shaped external guide 4 which is bored in the middle to form a suction hole 12 is disposed as the guide covers a blade. Filters 7 are supported by support nets 6 at the outlet 9 of a main frame 5. Air stream is shifted in axial direction by the external guide 4, dispersed toward the entire outlet 9 by a filter 7, and discharged. Distribution of air velocity is then made uniform so that the dust collecting efficiency may be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a filter-equipped blower used in clean rooms and the like.

BACKGROUND OF THE INVENTION Conventionally, as shown in FIG. 2, a blower with a filter used in this type of clean room, etc. bends high-performance air at right angles, discharges it, hits a wall surface, and then applies a high-performance filter 8. It was a method of passing.

Also, as shown in Figure 3, in order to reduce the overall thickness,
The system was such that a blower 10 was installed next to the high-performance filter 8, sucked in air from above the blower, and sent pressurized air above the high-performance filter 8.

Problems to be Solved by the Invention In such a conventional configuration, in the case of FIG.
Since the air is discharged in one direction, hits the wall surface, and then flows to the high-performance filter 8, the wind speed distribution is poor and the dust collection efficiency is low. Further, since the external dimensions are determined and the blower 1o has a scroll, the diameter of the impeller is small, resulting in the problem that the overall thickness must be increased in order to secure the air volume.

Also, in the case of FIG. 3, the wind speed distribution and dust collection efficiency are similar to those of FIG. 2, and although the overall thickness is small, there is a problem that the lateral dimension is large.

The present invention is intended to solve these problems, and with the above-mentioned conventional problems in mind, it is an object of the present invention to provide a filter-equipped blower for use in thin clean rooms etc. that improves wind speed distribution and has high dust collection efficiency. That is.

Means to Solve the Problem In order to solve this problem, the filter-equipped blower of the present invention has a plurality of blades attached to the upper end of the main plate, which has a disk shape with a convex center section. An impeller composed of
An electric motor that is connected to a concave portion below the convex center of the impeller and rotates the impeller; a bowl-shaped outer guide that has an air suction port in the center and covers the blade; and an electric motor that rotates the impeller. A filter is placed at the air outlet.

Operation With this configuration, when the electric motor is operated, the air sucked into the impeller is discharged from the circumference of the impeller and flows along the outer guide to the discharge port. Furthermore, the air is discharged with a constant wind speed distribution due to the filter provided at the discharge port.

Example An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, a plurality of blades 2 are attached to the upper end of a main plate 1 having a convex central section and a disk shape to form an impeller. An electric motor 3 is disposed in a concave portion below the central convex shape of the impeller 11, and a bowl-shaped outer guide 4 having an open center and a suction port 12 is disposed so as to cover the blades of the impeller 11. do. The electric motor 3 and the outer guide 4 are fixed to the main body frame 5. In addition, the main body frame 5
A filter 7 is supported by a support net 6 and attached to the discharge port 9 . Furthermore, a high-performance filter 8 is placed on the leeward side.
is installed. In the above configuration, when the impeller 11 is rotated by the operation of the electric motor 3, the plurality of blades 2 attached to the main plate 1 cause the suction port 1 of the outer guide 4 to rotate.
Air is sucked through 2, pressurized, and discharged. The flow of the air is changed in the axial direction by the outer guide 4, flows through the discharge port 9 to the filter 7, and is discharged toward the high-performance filter. The filter 7 supported by the support net 7 spreads the air flow over the entire discharge port 9 and is discharged toward the high-performance filter 8.

By spreading the air flow over the entire surface of the discharge port 9, the dust collection efficiency of the high-performance filter also increases.

Effects of the Invention As is clear from the description of the embodiments, the present invention provides an impeller and a bowl-shaped guide using a concave main plate.

Due to the overall effect of the filter configuration, the overall thickness can be made thinner than conventional products, and the wind speed distribution is uniform, so it has great industrial value as a filter-equipped blower used in clean rooms with good dust collection efficiency. can get.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing a filter-equipped blower according to an embodiment of the present invention, Fig. 2 is a side cross-sectional view showing a conventional filter-equipped blower, and Fig. 3 is a side cross-sectional view showing another conventional filter-equipped blower. It is. 1...Main plate, 2...Blade, 3...
...Electric motor, 4...Outer guide, 5...
...Support net, 7...mark, filter, 11... impeller, 12... suction port. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
1 Break 7-' Zu Ilter 9°-U exit f/--"-1 class f2----g loss exit

Claims (1)

[Claims] An impeller is constructed by attaching a plurality of blades to the upper end of a main plate having a disk shape with a convex center section, and a concave portion below the convex center of this impeller, A blower with a filter, comprising an electric motor that rotates a car, a bowl-shaped outer guide having an air suction port in the center and covering the blades, and a filter disposed at the discharge port of the air discharged from the impeller.