CN201088542Y

CN201088542Y - Dust catcher with silencer and its silencer

Info

Publication number: CN201088542Y
Application number: CNU2007200389797U
Authority: CN
Inventors: 倪祖根
Original assignee: Suzhou Kingclean Floorcare Co Ltd
Current assignee: Suzhou Kingclean Floorcare Co Ltd
Priority date: 2007-06-27
Filing date: 2007-06-27
Publication date: 2008-07-23
Anticipated expiration: 2017-06-27

Abstract

The utility model discloses a dust collector with silencing function and a silencer, comprising a dust filtration chamber and a motor chamber in a dust collector main frame casing. An air exit is arranged on the main frame casing. A motor cover of a built-in motor is positioned in the motor chamber, and an air inlet and an air outlet, between which an air exhausting duct is positioned, are arranged on the motor cover. An expansion chamber and a silencing baffle with a plurality of hush pipes are orderly positioned in the air exhausting duct. The silencer comprises an air outlet pipe on the motor cover, the expansion chamber at the bottom of the motor cover, which is communicated with the air outlet pipe, and the plurality of bush pipes, which are connected with the expansion chamber. The filtered air drained from the air outlet of the motor cover is disposed in first level silencing by the expansion chamber through the principle of expansion silencing, and then experiences the second level silencing dispose given by the silencing baffle, so that the silencing capability of the dust collector is greatly promoted and the noise is effectively lowered.

Description

Dust catcher and silencing means thereof with silencing function

Technical field

The utility model relates to a kind of dust catcher and silencing means thereof with silencing function.

Background technology

In the prior art, the basic structure of dust catcher comprises filter dirt chamber and the motor cavity in the main case, has exhaust outlet on the main case; Motor in the motor cavity places in the motor cover, has air inlet and air outlet on the motor cover, is exhausting duct between air outlet and the exhaust outlet.The filter net air of coming out from filter dirt chamber enters exhausting duct from the air inlet on the motor cover and is discharged by the exhaust outlet on the main case at last.Yet a kind of silencing means often only is set in the exhausting duct of above-mentioned dust catcher, be generally the sound gobo that cuts off exhausting duct and be furnished with hush pipe, owing to the acoustic wave energy of the filter net air of discharging from the motor cover air outlet is bigger, only not obvious through the one-level noise reduction treatment effect of sound gobo; And at present exhausting duct is also shorter, and structural configuration lacks tortuosity, can't play the effect that weakens the sound wave Propagation of Energy, and in a word, the noise that sends in use of dust catcher is bigger at present, some high power vacuum cleaner particularly, and noise is bigger.

Summary of the invention

The utility model purpose is: a kind of dust catcher with silencing function is provided, by setting gradually expansion chambers in the exhausting duct between conventional cleaners motor cover air outlet and main case exhaust outlet and sound gobo carries out noise reduction, to improve the noise reduction ability, effectively reduce noise.

The technical solution of the utility model is: a kind of dust catcher with silencing function, comprise filter dirt chamber and motor cavity in the dust collector host shell, and have exhaust outlet on the main case; The motor cover of built-in motor being installed in the motor cavity, having air inlet and air outlet on the motor cover, is exhausting duct between air outlet and the exhaust outlet; Be provided with expansion chambers and the sound gobo that is furnished with some hush pipes in the described exhausting duct successively.

The technical scheme that the utility model is comparatively detailed is: a kind of dust catcher with silencing function, comprise filter dirt chamber and motor cavity in the dust collector host shell, and have exhaust outlet on the main case; The motor cover of built-in motor being installed in the motor cavity, having air inlet and air outlet on the motor cover, is exhausting duct between air outlet and the exhaust outlet; Motor cover is provided with the annular base that is connected as a single entity with it, and annular base is an expansion chambers with the cavity that surrounds between the main case base plate; The air outlet of motor cover is opened on its sidewall, and motor cover is provided with the discharge pipe that is connected as a single entity with it, and air outlet is communicated with expansion chambers through discharge pipe.

The technical scheme that the utility model is more detailed is: a kind of dust catcher with silencing function, comprise filter dirt chamber and motor cavity in the dust collector host shell, and have exhaust outlet on the main case; The motor cover of built-in motor being installed in the motor cavity, having air inlet and air outlet on the motor cover, is exhausting duct between air outlet and the exhaust outlet; Motor cover is provided with the annular base that is connected as a single entity with it, and annular base is an expansion chambers with the cavity that surrounds between the main case base plate; Motor cover is combined by first cover and second cover, and air outlet is opened on the sidewall of first cover, and the top of air inlet also has relief hole, and relief valve is housed on the relief hole; Second is covered with the discharge pipe that is connected as a single entity with it, and the discharge pipe mouth of pipe coincide with the air outlet on first cover, and discharge pipe is communicated with expansion chambers.Sound gobo with the part seat of motor cover annular base along being integrated.

Another purpose of the present utility model provides a kind of silencing means that is used for dust catcher, and its technical scheme is: comprise the discharge pipe of motor cover, expansion chambers that the motor cover bottom is communicated with discharge pipe and the some hush pipes that are communicated with expansion chambers.

The principle of expansion noise reduction is the unexpected expansion of propagating pipeline section by means of sound wave, makes along the sound wave of some frequency of pipe transmmision to reflect back to Sounnd source direction in sudden change place, thereby reaches the noise elimination purpose.The expansion chambers that increases in the exhausting duct of the present utility model utilizes above-mentioned principle to carry out noise reduction just.

The utility model advantage is:

1. owing on the exhausting duct between motor cover air outlet and main case exhaust outlet, increase expansion chambers, earlier the filter net air of discharging in the motor cover air outlet being carried out the one-level noise reduction handles, carrying out the secondary noise reduction through sound gobo again handles, improve the noise reduction ability of noise reduction dust catcher greatly, effectively reduced noise.

2. owing to set out airduct in addition on the sidewall of motor cover, allow the bigger expansion chambers of less discharge pipe in cross section and volume be connected, be equivalent to increase the mutability that the sound transmission pipeline section is expanded, more positive effect is played in expansion noise reduction of the present utility model.The set-up mode of air outlet and discharge pipe has increased the tortuosity of exhaust duct integral body simultaneously, is beneficial to the Propagation of Energy that weakens sound wave in the gas.

3. the part seat edge owing to sound gobo and motor cover annular base is integrated, discharge pipe also is connected as a single entity with motor cover, therefore silencing means compact conformation of the present utility model, simple and direct smoothness, and motor cover adopts the easy-to-dismount upper and lower combining form of partly covering, and convenient and practical.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the utility model stereogram (removing left half main case);

Fig. 2 is the utility model motor cavity exploded view;

Fig. 3 is the utility model vertical view (removing first main case);

Fig. 4 is the A-A cutaway view of Fig. 3;

Fig. 5 is the B-B cutaway view of Fig. 3;

Fig. 6 is a motor cover stereogram of the present utility model (removing first cover)

Fig. 7 is a motor cover face upwarding stereogram of the present utility model (removing first cover)

Wherein: 1, exhaust outlet; 2, motor 3, air inlet; 4, expansion chambers 5, sound gobo; 6, annular base 7, main case base plate 8, discharge pipe 9, first cover; 10, second cover; 11, the discharge pipe mouth of pipe; 12, relief hole 13, relief valve.

The specific embodiment

Embodiment: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, a kind of dust catcher with silencing function of the utility model comprises filter dirt chamber and motor cavity in the dust collector host shell, has exhaust outlet 1 on the main case; The motor cover of built-in motor 2 is installed in the motor cavity, and motor cover is combined by first cover 9 and second cover 10.Have relief hole 12 on the top of first cover 9, relief valve 13 is housed on the relief hole 12.Having air inlet 3 below relief hole 12 is communicated with dust catcher front end filter dirt chamber; Have air outlet on the sidewall of first cover 9.Second cover 10 is provided with the discharge pipe 8 that is connected as a single entity with it, and the discharge pipe mouth of pipe 11 is identical with the air outlet on first cover.Also be provided with the annular base 6 that is connected as a single entity with it on second cover 10, the seat of this annular base 6 is an expansion chambers 4 along the cavity that surrounds with main case base plate 7, and aforementioned discharge pipe 8 is communicated with this expansion chambers 4.The sound gobo 5 that is furnished with some hush pipes with the part seat of annular base 6 along being integrated.

Be used for above-mentioned silencing means, be the discharge pipe 8 of motor cover, the expansion chambers 4 that motor cover bottom is communicated with discharge pipe 8 and with the hush pipe on the sound gobo 5 of being distributed in of expansion chambers 4 connections with dust catcher of silencing function.

In the above-described embodiments, the path of 1 of the exhaust outlet of first cover air outlet of 9 (only identifying among Fig. 2, Fig. 6 and its relative discharge pipe pipe 11 that coincide) to the main case is exhausting duct.The clean air of filter enters in the motor cover through air inlet 3 from filter dirt chamber, discharges from first air outlet that covers on 9 sidewalls, enters expansion chambers 4 through discharge pipe 8.Owing to enter the bigger expansion chambers of volume 4 from narrower discharge pipe 8, airborne sound wave is propagated pipeline section and is expanded suddenly, make along the sound wave of some frequency of pipe transmmision to reflect back to Sounnd source direction, handle thereby utilize expansion noise reduction principle to finish the one-level noise reduction in sudden change place.Air in the expansion chambers 4 are finished the secondary noise reduction by the hush pipe on the sound gobo 5 and are handled then, and the exhaust outlet 1 from the main frame coverboard is discharged at last.

Claims

1. the dust catcher with silencing function comprises filter dirt chamber and motor cavity in the dust collector host shell, has exhaust outlet (1) on the main case; The motor cover of built-in motor (2) being installed in the motor cavity, having air inlet (3) and air outlet on the motor cover, is exhausting duct between air outlet and the exhaust outlet (1); It is characterized in that: be provided with expansion chambers (4) in the described exhausting duct successively and be furnished with the sound gobo (5) of some hush pipes.

2. the dust catcher with silencing function according to claim 1 is characterized in that: described motor cover is provided with the annular base (6) that is connected as a single entity with it, and expansion chambers (4) is that annular base (6) is with the cavity that surrounds between main case base plate (7).

3. the dust catcher with silencing function according to claim 2 is characterized in that: described sound gobo (5) is integrated with the part seat edge of motor cover annular base (6).

4. according to claim 1 or 2 or 3 described dust catchers with silencing function, it is characterized in that: described air outlet is opened on the sidewall of motor cover, motor cover is provided with the discharge pipe (8) that is connected as a single entity with it, and air outlet is communicated with through the same expansion chambers of discharge pipe (8) (4).

5. the dust catcher with silencing function according to claim 4, it is characterized in that: described motor cover is combined by first cover (9) and second cover (10), air outlet is opened on first cover (9), discharge pipe (8) is connected as a single entity with second cover (10), and the discharge pipe mouth of pipe (11) coincide with air outlet.

6. silencing means that is used for dust catcher is characterized in that: it comprises the discharge pipe (8) of motor cover, expansion chambers (4) that the motor cover bottom is communicated with discharge pipe (8) and some hush pipes of same expansion chambers (4) connection.

7. the silencing means that is used for dust catcher according to claim 6 is characterized in that: described discharge pipe (8) is connected as a single entity with motor cover.

8. the silencing means that is used for dust catcher according to claim 6, it is characterized in that: described motor cover places on the dust collector host shell base plate (7), the motor cover bottom is provided with the annular base (6) that is connected as a single entity with it, and the seat of annular base (6) is expansion chambers (4) along the cavity that surrounds with main case base plate (7).

9. a kind of silencing means that is used for dust catcher according to claim 6 is characterized in that: described hush pipe is distributed on the sound gobo (5), and sound gobo (5) is connected as a single entity with motor cover.