JPS6345520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air blower equipped with a dust collection mechanism.

Conventional technology In the past, it was common for dust collectors to be installed separately from air blowers, but there were problems such as requiring a large amount of equipment costs. A device configured by integrating the device with the device has been proposed and is already known.

In addition, in order to improve the dust collection efficiency of the dust collection and blower device integrated in this way, for example,
As shown in Japanese Utility Model Publication No. 40-29408, the outer cylinder that forms the air passage is gradually enlarged toward the discharge side to reduce the repulsion of dust that collides with the inner wall of the outer cylinder due to the centrifugal force of the blower blades. An air purifying type blower that improves the dust collection effect and blows air while collecting dust removed from the air into a dust collection chamber has already been proposed.

Problems to be Solved by the Invention An object of the present invention is to provide an air blower equipped with a dust collection mechanism that has a stronger dust collection power than the above-mentioned conventional technology.

Means for Solving the Problems The present invention provides a blower housing containing a blower having rotor blades and stator blades, in which a dust collection portion is provided around the outside between the rotor blades and the stator blades, The present invention is characterized in that a spiral guide plate is provided facing the entrance of the dust collecting section, and the dust collecting section is connected to a dust collecting box.

Operation The air sucked into the blower housing by the rotation of the rotor blades is introduced into the dust collection part protruding outside between the rotor blades and the stationary blades, and the spiral guide plate provided in the dust collection part The air flows along a spiral air path formed by During this time, centrifugal force acts on the air, and the dust present in the air is centrifugally separated and collected in a dust collection box connected to the dust collection section.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an axial flow blower, in which 1 is a moving blade, 2 is a stator blade, and 3 is a drive unit. Reference numeral 4 denotes a housing of the blower, and a part of the housing 4 between the rotor blades 1 and the stationary blades 2 is protruded to the outside, and a dust collection part 5 is provided around the housing.

The dust collection section 5 has a spiral shape as shown in FIG. 2, and guides the fine dust collected by centrifugal force to the dust collection box 6. Its outer peripheral wall gradually increases its distance from the center to form a spiral chamber.

The same applies to the case of the mixed flow blower shown in FIG. Connected to dust collection box 6.

4 is a partition plate provided at the entrance of the dust collecting section 5, and 8 in FIG. 5 is a screw-shaped guide plate attached to the air passage facing the entrance of the dust collecting section 5.

Next, the effects of these embodiments will be explained.

First, air sucked into the blower housing 4 by the rotation of the rotor blades 1 is introduced into the dust collecting section 5 as shown in FIG. At this time, the air introduced by the rotation of the rotor blade 1 from the suction port having a wide cross-sectional area as shown in FIGS. The air is introduced into a narrow spiral air path formed by the shaped guide plate 8, and flows along the spiral air path as shown by the arrow in FIG. Due to the high-speed spiral movement of the air, a strong centrifugal force acts on the air,
Substances with a higher specific gravity than air, such as dust and dust in the air, and even moisture, are centrifuged in the direction in which centrifugal force acts, that is, in the direction from the center of the dust collection section 5 toward the entrance of the dust collection section 5. Become.

Due to such centrifugal separation, the dust collected along the inner surface of the outer peripheral wall of the dust collecting section 5 is moved in the direction of air flow shown by the arrow in FIG. 5, that is, in the direction of the rotation of the clock in FIG. A dust collection part 5 formed in a spiral shape is transported by an air flow in a direction.
The dust is collected in the dust collection box 6 along the inner wall of the dust collection box 6.

In addition, since the dust collecting section 5 is protruded to the outside and a partition plate 7 is provided at the entrance of the dust collecting section, the dust collected along the inner surface of the outer circumferential wall of the dust collecting section 5 can be prevented during work. It will not be blown away again by air currents.

Effects of the Invention According to the present invention, the air is moved along the spiral air path formed by the spiral guide plate provided facing the entrance of the dust collecting section. A centrifugal force stronger than that produced by the blades alone works, and the dust in the air can be centrifugally separated, and the centrifugal force can send it into the dust collecting section.
Furthermore, by using a spiral air path, the limited space of the blower housing is utilized as effectively as possible and the effective length of the air path is ensured. Since the time can be extended and the powerful centrifugal separation action that acts on air per unit volume can be sustained for a long time, the dust collection effect is even more reliable.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a sectional view of yet another embodiment.
FIG. 4 and FIG. 5 are explanatory diagrams of main parts. 1... Moving blade, 2... Stationary blade, 3... Drive section, 4...
...Blower housing, 5...Dust collection section, 6...Dust collection box, 7...Block plate.

Claims (1)

[Claims] 1. A blower housing containing a blower having rotor blades and stator blades has a dust collection section projecting outward between the rotor blades and stator blades, and a spiral shape facing the inlet of the dust collection section. A blower device equipped with a dust collection mechanism, characterized in that a guide plate is provided, and the dust collection section is connected to a dust collection box.