SU1398815A1 - Air suction unit for vacuum cleaner - Google Patents

Abstract

This invention relates to vacuum cleaner components. The purpose of the invention is to increase productivity and efficiency. The air-suction unit to the vacuum cleaner contains a vertically mounted electric motor 1, a Upper bearing assembly 2, a blower 3, the housing 4 of which has a circular shape with a variable cross-section increasing in the direction opposite to that of the upper podshpnik assembly, and radially mounted blades in the housing 4 , connected to the lower bearing unit 18. Inside the case 4, the ring 14 is coaxially mounted with it, the radial ribs and vertical weights are evenly spaced around the circumference ki. The radial ribs are located between the outer surface of the ring 14 and the inner cages of the housing 4 and are connected to the blades by means of vertical bridges. The magnetic circuit 13 of the stator of the electric motor is located in the ring 14, and the blades with the lower bearing assembly are located under the ring at a distance equal to the height of the vertical jumpers. 3 il. § CO W 11 12 w Wed 00 00 ate

Description

The invention relates to harvesting machinery and can be used in the construction of household vacuum cleaners.

The purpose of the invention is to increase productivity and efficiency.

FIG. 1 shows air exhausts in & aggregates unit, general view} in FIG. 2 - k) a top view of the air blower; on . 3 shows section A-A in FIG. 2

; The unit contains a vertically mounted collector electric motor 1 with an upper bearing assembly 2 and a blower 3 with an annular housing 4. Assembly 2 has four src 5 that support the top bearing's socket 6. A screw 7 with screws 8 covers the socket with the bearing 6. 5, two brushes of the holder 9 are fixed, in which the fingers 10, the springs 11 and the cover 12 are placed. The lower part of the shield 2 is ring-shaped, the magnetic conductor 13 of the stator of the electric motor 1 is tightly connected to the upper part of the body 4. The lower part is magnitopr - vrda 13 fitted into the ring groove 14, in the upper part vsholnennogo to 4 erpusa blower 3. Further in | The housing 4 houses a diffuser 15, 1 and an impeller 16 mounted on the shaft 17 and a lower bearing slot 18 with a bearing 19. The magnetic wire 13 is attached to the diffuser 15 by guys 20, the blower 3 is closed from the bottom with a pull 21, and has a central opening. The bearing unit 2 with screws 22 is connected directly to the CJ by the body 4 by blowing the air blower 3.

; The body 4 has a round shape with a variable cross-sectional diameter, increasing in the direction opposite to the top of the 111 | ipnic node. The ring 14 (FIG. 2) p is positioned inside the upper part of the body 4 and four radial ribs I and 23 are connected to the inner walls of the body 4. In this case the ribs 23 are arranged symmetrically and evenly around the circumference of the body 4. Thus, between the outer surface of the ring 1 and the inner walls of the housing 4 are formed by annular channels 24 for the free passage of air. In the lower part of the housing 4 (Fig. 3) there are four radial vanes 25 connected to the lower bearing seat 18 between the radial ribs 23 and the lo

0

5 0 5 o

five

0

five

0

The patches 25 have vertical web 26, which are also connected to the inner walls of the casing 4. The radial blades. 25, together with the vertical bridges 26, are made at the locations of the radial ribs 23 and therefore they are also placed symmetrically and evenly around the circumference of the body 4. Bearing seat 18 together with the radial blades 25 are located under the ring 14 at a distance equal to the height of the vertical ridges 26, and therefore they are located in the expansion part of the body 4.

The casing 4 of the blower 3, as well as the upper BEARING unit 2, is made by die-casting from an aluminum alloy. Thus, the ring 14, the socket 18 and the inner walls of the housing 4 are interconnected in four places by means of radial

the ribs 23, the vertical webs 26, the radial vanes 25 and represent a single structural unit. This ensures low radial runout and high coaxiality of the implementation of the seats of the ring 14, the socket 18 and the annular body 4.

Air suction unit works as follows.

When the motor 1 is connected to the mains, the shaft 17 and the centrifugal wheel 16 are rotated. Air is drawn in through the opening of the cap 21 by the centrifugal wheel 16 and through the slots of the diffuser 15 into the middle part of the blower. Further, a part of the air flow passes through the ventilation channels located in the electric motor 1 between the stator poles, and the other part passes through the annular channels 24 between the ring 14 and the walls of the housing 4. The outer part of the magnetic conductor 13 flows around the entire perimeter, which contributes to the cooling of the collector motor 1. The thickened lower part of the upper bearing assembly 2 directs the air flow directly to the magnetic circuit 13 (the paths of the air flow in Fig. 1 are indicated by the arrow ami). The created favorable conditions for the passage of air and intensive cooling increase the power of the blower and the load

/ 18 25 fig.Z

Claims (1)

Claim An air-suction unit to a vacuum cleaner containing a vertically mounted electric motor, an upper bearing assembly, a blower, the housing of which has a circular shape with a variable in shape. the diameter of the cross section increasing to the side, blades renewed in the casing connected to the lower bearing assembly, characterized in that, in order to increase productivity and efficiency, it is equipped with a ring located inside the blower casing; and arranged uniformly around the circumference radial ribs and vertical jumpers, while the radial ribs are located between the outer surface of the ring and the inner walls of the housing and are connected to the blades via vertical GOVERNMENTAL webs motor stator magnetic core placed in the ring groove and the lower blade bearing assembly located beneath 20 ring at a distance equal to the height of the vertical jumpers. reverse, to the location of the upper bearing assembly, and radially