SU1602442A1 - Vacuum cleaner - Google Patents

Abstract

The invention relates to the field of cleaning, in particular to vacuum cleaners. The purpose of the invention is to improve performance. The vacuum cleaner comprises a housing 1 with inlet 2 and outlet openings 3, in which a soundproof casing is installed, consisting of an inner shell 4 with an outlet opening 5 and an outer shell 6 with an outlet opening 7 opposite the outlet opening 3 of housing 1. Outer shell 6 forms with cavity 1 a cavity 8, which communicates with the outlet opening 3 of housing 1. An air-suction unit 9 is placed in the inner shell 4. A sound-insulating casing with an air-suction unit 9 placed in it is mounted on an elastic damper 1 0 and separated from the inlet 2 of the housing 1 by the filter 11. The outer sheath 6 of the soundproof casing consists of two layers, one of which is made of rigid material 12 and the other is of elastic material 13 and has a lip opposite the outlet 5 of the inner shell 4, and the outlet 5 itself is a perforated flap. The side walls of the soundproof casing are reinforced with sound-absorbing material 15. 1 Cp f-ly, 2 ill.

Description

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The invention relates to a cleaning technique, in particular to vacuum cleaners.

The purpose of the invention is to improve performance.

FIG. 1 shows a vacuum cleaner, a cut; in fig. 2 shows section A-A in FIG. one.

The vacuum cleaner includes a housing 1 with an inlet 2 and an outlet 3, in which a sound-insulating casing is installed, consisting of an inner shell 4 with an outlet 5 and an outer shell 6 with an outlet 7 located opposite the outlet 3 of housing 1. Outer shell forms with cavity 1 a cavity 8 communicating with outlet openings 7 and 3 of the outer casing of shell 6 and housing 1, respectively. An air-suction unit 9 is placed in the inner shell 4. The sound-insulating casing with the air-intake unit 9 placed in it is mounted on an elastic damper 10 and is separated from the filter 11 from the inlet 2 of the casing 1. The outer casing 6 of the sound-insulating casing consists of two layers, one of which is made of rigid 12 and the other is made of elastic material 13 and has a loop 14 located opposite the outlet 5 of the inner shell 4, and the outlet 5 of the inner shell 4 is a perforar oval flap. The side walls of the acoustic casing are reinforced with sound absorbing material 15.

The vacuum cleaner works as follows.

Dust-air flow through the inlet 2 of the housing 1 of the vacuum cleaner, cleared of dust by the filter 11, passes through the gap between the rotor and the stator of the air-intake unit 9, cools it, and enters the inner shell 4 of the soundproof casing with pulses defining the noise vacuum cleaner. From the inner shell 4, the air flow through the hole 5, in which a perforated s-slider is made to smooth out the pulsations, enters the duct channel formed by the outer 6 and inner 4 shells of the acoustic insulation casing. The presence of flats 14 on the outer shell 6 of the soundproof casing allows for a gradual increase in the useful area of the duct section along the air flow. An increase in the cross section leads to a decrease in speed, leveling of the flow, and consequently, a decrease in the schum. To reduce the aerodynamic noise generated by low-frequency pulsations in the stream,

the upper part 13 of the outer shell 6 of the soundproof casing of elastic material with the possibility of deformation under the action of low-frequency pulsations of the air flow inside the duct, thereby changing the volume of the channel that

leads to smoothing of low-frequency pulsations. The structural noise that occurs in the casing elements under the action of a pulsating air flow is reduced by the elastic fixing of the air suction unit 9 and the sound insulating casing to the vacuum cleaner body 1 through the shock absorber 10, as well as the reinforcement of the sound insulating casing 15 by the absorbent material 15. The outlet 7 of the outer casing 6

soundproof casing opposite the outlet 3 of the housing 1 and that these holes 7 and 3 communicate with the cavity 8 located between the outer casing 6 of the sound insulation casing and the housing 1

the vacuum cleaner allows using the ejection effect acting as a compensator for low-frequency pulsations of the air flow to reduce the noise of the vacuum cleaner ..

thirty

Claims (2)

1. A vacuum cleaner comprising a housing with inlets and outlets, in which a soundproof casing is installed, consisting of the inner shell having the outlet openings and the outer shell forming a cavity with the shell and communicating with the outlet of the housing. A self-suction unit, characterized in that, in order to improve performance, the outer shell of the sound-insulating casing consists of two parts, one of which is made of a hard one, and the other of an elastic material and has flatted, 5 located opposite the outlet of the inner shell. 2. The vacuum cleaner according to claim 1, wherein the outlet of the inner shell is a perforated flap. 14 FIG. 2