JPS606099A - Electrical cleaner - Google Patents

Abstract

PURPOSE:To reduce the blast loss and pressure loss of an electrical cleaner, by making a part of several guide vanes which are provided on the inside surface of the side wall of a fan casing and which are inlined with respect to a shaft, continuous with rectifier plates projecting from the rear surface of the fan casing. CONSTITUTION:A plurality of guide vanes 14 are provided on the inside surface of the side wall of a fan casing 9, being inclined with respect to the axis of a shaft 13, and rectifier plates 14 are provided in the rear surface of the bottom plate 15 of the fan casing 9, being continuous with the guide vanes 14 at intervals of (n) pieces. Air on rotary motion is smoothly jetted out to the back surface of the fan casing 9 along the guide vanes 14 on the inside surface of the side wall of the fan casing 9. In this stage, the blast loss and pressure loss of the cleaner are reduced due to the rectification by the rectifier plates 16.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a vacuum suction type electric vacuum cleaner.

Structure of the conventional example and its problems The structure of the fan case and motor in the suction section of a conventional vacuum cleaner is as shown in FIG. A back plate 3 was provided, and a rectifying plate 4 was provided at the rear of the fan back plate 3 and at the inner bottom of the fan case 1. In addition,
In the figure, 5 is a motor, and 5' is a ventilation hole. In such a structure, the air pushed out by the fan 2 passes through the outside of the fan back plate 3, hits the rectifier plate 4, and is exhausted to the motor 5 through the ventilation port 5'. Since only a circumferential passage is formed between the outside of the fan back plate 3 and the fan casing 1, the air pushed out by the fan 2 does not flow smoothly to the rectifying plate, resulting in a loss of air volume of 1 ji and Pressure loss was increasing.

OBJECTS OF THE INVENTION 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 vacuum cleaner that allows air pushed out by a fan in a suction section to pass through smoothly and has small air volume loss and pressure loss. be.

Structure of the Invention In order to achieve the above object, the present invention includes a fan case and a suction section consisting of a fan and a motor, and the fan case has a ventilation hole in the inner bottom and a shaft for rotating the fan inside the side wall. The vacuum cleaner has a plurality of inclined guide vanes, and is provided with a rectifying plate that is continuous with every n guide vanes (n is an integer) and protrudes from the back of the fan case. be.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The figure shows a suction part, and 6 is a body having an intake lower part, to the rear of which a fan case 9 with a fin 8 installed therein is joined via a gasket 1o. Several motors 12 are installed at the rear of the fan case 9 via a heat sink 11, and the fan 8 is rotated by the motors 12 via a shaft 13. A plurality of guide vanes 14 inclined with respect to the axis of the shaft 13 are provided in the side wall @ 11 of the fan case 9, and n guide vanes 14 (n
is an integer) consecutive rectifier plates 16 are provided. Note that 1γ indicates a ventilation hole formed in the bottom plate 15 of the fan case 9. Unfortunately, the cover, dust collection bag, etc. are omitted in the drawing.

In the vacuum cleaner configured as described above, when the fan 8 is rotated by the drive of the motor 12, air is sucked through the intake lower part of the body 6 and discharged rearward.

In this case, since the air is rotating as the fan rotates 80 times, the guide vanes 1 inside the side wall of the fan case 9
The air is smoothly blown onto the back surface of the fan case 9 along the lines 4 and 4. Since the air guided by the guide vanes 14 in the above-mentioned blowout is rectified by the rectifying plate 16, the air volume loss and pressure loss can be reduced. In particular, by reducing the number of guide vanes 14 and current plates 16 compared to the same number, the current plate 16 does not narrow the ventilation opening 17, and
- Helps reduce force losses.

Figure 3 shows the air volume characteristics of the vacuum cleaner according to the present invention and the conventional vacuum cleaner, with the vertical axis representing the vacuum ml +
4' The A axis represents the air volume, and the characteristic of the conventional one is A, and the characteristic of the present invention is B. In other words, even if the degree of vacuum is relatively low, the present energy-saving system can obtain sufficient ventilation and work efficiently.

As is clear from the description of the embodiments described above, the present invention provides a vacuum cleaner with reduced air volume loss and pressure loss by devising the guide vanes and rectifying plate in the fan case of the suction section. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of essential parts of a vacuum cleaner according to an embodiment of the present invention,
Figures 2a, b, and c are top views and cross-sectional views of the same fan case;
A bottom view is shown, FIG. 3 is an air volume characteristic diagram, and FIGS. 4a and 4b are a sectional view of main parts of a conventional vacuum cleaner and a top view of a fan case. 6--Body, 7--Intake 1, 8--Fan, 9--Fan case, 12--Motor, 1
3...Shaft, 14...Guide vane, 15.
・・Bottom plate, 16 ・・Rectifier plate, 1.---Ventilation. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 □Qη fact. Figure 4

Claims (1)

[Claims] The fan case includes a suction section consisting of a fan and a motor, and the fan case has a ventilation hole in the inner bottom and a plurality of guide vanes inclined with respect to the shaft for rotating the fan inside the side wall, and the guide vanes A vacuum cleaner comprising a rectifier plate that is connected to every nth (n is an integer) rectifier plate and protrudes from the back of a fan case.