CN100387179C - Cyclone type dust cup of dust collector - Google Patents

Abstract

A cyclone dust cup of a dust collector comprises a shell, an air outlet arranged on the shell, an air inlet tangent to the peripheral wall of the shell and a separator arranged in the shell, wherein the separator is provided with an air inlet; the air inlet of the separator is communicated with the air outlet of the dust cup through the inner tube, and the air inlet of the separator is an annular body and is formed by rotating a spiral piece in a threaded manner or uniformly arranging a plurality of spiral pieces in a multi-thread manner, the air outlet of the dust cup is arranged on a cup cover covering the shell, and a three-blade rotating piece is arranged in an extension tube below the inner tube and the outer tube of the separator; the air with dust enters the inner cavity of the dust cup and can further increase the separation effect after three times of separation.

Description

Vacuum cleaner cyclone dust cup

technical field

The invention relates to the technical field of vacuum cleaner manufacturing, in particular to a separation device for air and dust of a centrifugal vacuum cleaner.

Background technique

The application number I have applied for is "200510049880.2", "Integral double-separated vacuum cleaner dust cup". Compared with the prior art, although the effect of separating air and dust has been greatly improved, there is still a small amount of fine dust that has not been separated. The air flow is adsorbed on the filter of the vacuum cleaner. After repeated use, a lot of dust still accumulates on the filter, which blocks the circulation of the air over time. Therefore, it is necessary to produce a separator with better separation effect on the original basis. .

Contents of the invention

The technical problem to be solved by the present invention is that the separation effect of the dust cup of the vacuum cleaner with two separation functions is not ideal enough, and a small amount of unseparated fine dust is adsorbed on the filter sheet along with the air flow.

The technical solution of the present invention to solve the technical problem is: add another separation function to the dust cup of the vacuum cleaner with two separation functions, so that it becomes a dust cup of the vacuum cleaner with three separation functions. It includes a housing, an air outlet opened on the housing, an air inlet tangent to the surrounding wall of the housing, and a separator arranged in the housing. The separator is provided with an air inlet, and the horizontal position of the top of the separator air inlet is the same There is a certain drop height at the center of the air inlet of the dust cup. There is an isolation cover under the air inlet of the separator. The separator is provided with two coaxially installed inner and outer tubes. The bottom of the inner and outer tubes is closed and connected, and the height of the inner tube is low. At the height of the outer tube; the air inlet of the separator communicates with the air outlet of the dust cup through the inner pipe; the air inlet of the separator is in the form of a ring, which is arranged by a helical sheet rotating in a helical shape or a plurality of helical sheets in a multi-headed helical shape Rotating and uniformly arranged; the air outlet of the dust cup is set on the cup cover that covers the housing, and the separator in the housing is connected to the dust cup housing through the outer tube and the connecting bracket with a central hole; the dust cup housing The connecting bracket is trumpet-shaped, and a short tube corresponding to the inner tube is connected under the central hole, and the diameter of the short tube is slightly smaller than the inner tube; the bottom of the inner tube is also connected with an extension tube connected to it, and the isolation cover passes through the central hole below it A cylindrical cavity coaxial with the extension pipe and larger in diameter than the extension pipe is connected. The cylindrical cavity communicates with the extension pipe and also with the air inlet of the separator, thus forming a three-time separated vacuum cleaner dust cup. After a separation like this, most of the dust is separated. Air with a small amount of fine dust enters the gap between the extension pipe and the cylindrical cavity through the annular air inlet of the separator. Due to the guiding effect of the helical sheets rotated in a helical shape, the air with a small amount of fine dust entering the gap also generates a swirling airflow. When this part of air descends to the lower end of the extension tube, the fine dust that enters the gap due to the centrifugal force rotates downwards and enters the cylindrical cavity, and the separated air enters the inner tube upwards through the extension tube.

Further, a three-leaf rotating blade is set in the extension pipe. After the secondary separation, due to the effect of the three-blade rotating blade of the extension pipe, the separated air continues to rotate upwards. If this part of the air still has a small amount of fine dust, then when After this part of air rises to the upper end of the inner tube, the spiral radius suddenly increases, the wind pressure decreases, and the centrifugal force separates the very small amount of fine dust mixed in the air again, throws it to the inner wall of the outer tube and rotates and falls along the wall, which can further increase the separation effect.

Description of drawings

Fig. 1 is the schematic structural view of the cyclone dust cup of the vacuum cleaner of the present invention;

Fig. 2 is a perspective view of the air inlet of the separator of Fig. 1;

Fig. 3 is a perspective view of the three-blade rotary blade in Fig. 1;

Detailed ways

Shown in Fig. 1 to Fig. 3 is the embodiment of the product of the present invention. As shown in the figure, the dust cup includes a dust cup shell 13, a dust cup air inlet 1 provided on the peripheral wall of the dust cup shell 13 and tangent to it, and a dust cup outlet 1 set on the cup cover that is closed with the shell. The tuyere 3 and the separator placed in the dust cup, the separator is provided with an air inlet 6, the horizontal position of the top of the separator air inlet and the center position of the dust cup air inlet have a certain drop height, the bottom of the separator air inlet 6 An isolation cover 7 is provided, the air inlet 6 of the separator communicates with the air inlet 1 of the dust cup, and the outer pipe of the separator is connected with the dust cup housing. The upper part of the air inlet of the separator is connected with two coaxial inner and outer pipes 8, 9, and the lower part is connected with a frustum-shaped isolation cover 7. The outer wall of the inner tube 8 is closed and connected to the bottom of the inner wall of the outer tube 9 , wherein the inner tube 8 communicates with the air outlet 3 of the dust cup, and the inner tube 8 is shorter than the outer tube 9 . An inner tube 8 extends downwards through the shield 7 . There is a connecting bracket 4 in the dust cup, which is connected to the upper end of the outer tube 9 of the separator in a bayonet mode and rests on the mouth of the dust cup. This connecting support 4 is the trumpet shape with the big upper mouth and the lower mouth. The support 4 has a central hole 10, and a short tube 11 corresponding to the inner tube 8 is connected below the central hole, and the short tube diameter is slightly smaller than the inner tube. As shown in Figure 2, the air inlet 6 of the separator is in the form of an annular body, which is formed by a helical piece 12 arranged in a helical rotation or a plurality of helical pieces arranged evenly in a multi-headed helical rotation, and the upper ends of the helical pieces 12 are connected The closed connection end at the bottom of the inner tube and the outer tube, and the other end is fixed on the frustum-shaped isolation cover 7 and the extension tube 14 . A cylindrical cavity 16 coaxial with the extension tube and larger in diameter than the extension tube is connected below the isolation cover, and a gap is left between the extension tube and the cylindrical cavity. In order to facilitate the unimpeded flow of air entering the spiral sheet 12. The air inlets 6 of the separator are uniformly arranged at the lower ends of the helical pieces 12 , which pass through the isolation cover 7 and rotate downwards. A conical cylinder 17 with an open bottom is arranged in the cylindrical cavity 16 . The upper edge of the conical cylinder 17 is connected to the cylindrical cavity 16 at a horizontal position lower than the lower end of the extension tube 14 , and there is a certain interval between the lower edge of the conical cylinder 17 and the bottom of the cylindrical cavity 16 . A helical structure 19 of three-lobed rotating blades is arranged in the extension tube 14 .

Below in conjunction with Fig. 1, Fig. 2 and Fig. 3 describe the operating principle of the present invention three times of separation. Connect the air duct connected to the air inlet of the electric fan in the vacuum cleaner to the air outlet 3 of the dust cup, turn on the switch, and after the electric fan works, the inner cavity of the dust cup will generate negative pressure, and the air with dust will enter the dust cup from the air inlet 1 of the dust cup Because the axis of the dust cup air inlet 1 is tangent to the circumferential surface of the dust cup shell 13, a swirling airflow is generated. And because the air inlet 6 of the separator is lower than the air inlet 1 of the dust cup, there is a certain drop, so that there is a certain air pressure difference between the two air inlets, so after the air with dust enters the dust cup, it will produce a downward spiral quickly. In the cyclone, the dust is thrown to the surrounding wall by the centrifugal force and rotates along the wall and falls to the dust collecting chamber 2 between the dust cup body 13 and the outer tube 9 . Due to the partition effect of the isolation cover 7, the dust falling into the dust collection chamber 2 is difficult to be rolled up again by the influence of the upper spiral air flow and enters the air inlet 6 of the separator. Most of the dust is separated, and the air with a small amount of fine dust enters the gap 15 between the extension pipe 14 and the cylindrical cavity 16 through the annular air inlet 6 of the separator. Due to the guiding effect of the helical sheets 12 evenly distributed in the air inlet, the air with a small amount of fine dust entering the gap 15 also generates a spiral airflow. When this part of air descends to the lower end of the extension pipe 14, the fine dust that enters the gap due to the centrifugal force rotates downward along the tangential direction on the inner wall of the conical cylinder 17 and enters the inner cavity 18 of the cylindrical cavity 16, and the separated air It enters the inner tube 8 upwards through the extension tube 14 . Due to the effect of the three-leaf helix 19 in the extension pipe 14, the separated air continues to rotate upwards. If this part of the air also has a small amount of fine dust, then when this part of the air rises to the upper end of the inner pipe 8, the spiral radius increases suddenly, and the wind As the pressure decreases, the centrifugal force separates a very small amount of fine dust mixed in the air again, throws it to the inner wall of the outer tube 9 and rotates along the wall and falls to the inner dust chamber 5. The air separated three times is guided by the short pipe 11 on the bracket 4, enters the electric fan through the air outlet 3 of the dust cup, and then exits the vacuum cleaner.

Claims (2)

1. A cyclone-type dust cup for a vacuum cleaner, which includes a housing (13), an air outlet (3) provided on the housing, an air inlet (1) tangential to the surrounding wall of the housing and a separator located in the housing , the separator is provided with an air inlet (6), the horizontal position of the top of the air inlet of the separator and the center position of the air inlet of the dust cup have a certain drop height, and an isolation cover (7) is provided under the air inlet (6) of the separator , the separator is provided with two coaxially installed inner and outer pipes (8, 9), the bottom of the inner and outer pipes are closed and connected, and the height of the inner pipe is lower than the height of the outer pipe; the air inlet of the separator passes through the inner pipe and the dust cup air outlet ( 3) In communication, the air inlet (6) of the separator is in the form of a ring, which is formed by a helical piece (12) arranged in a helical rotation or a plurality of helical pieces arranged in a multi-headed helical rotation evenly distributed. The air outlet (3) of the dust cup is opened on the cup cover that covers the housing, and the separator in the housing passes through the outer tube (9), the connecting bracket (4) with a central hole and the dust cup housing (13) connected, the connecting bracket is trumpet-shaped, a short tube (11) corresponding to the inner tube is connected below the central hole, the diameter of the short tube is slightly smaller than the inner tube, and it is characterized in that the bottom of the inner tube is also connected with an extension Pipe (14), the isolation cover connects a cylindrical cavity (16) coaxial with the extension tube and larger in diameter than the extension tube below it through the central hole, and the cylindrical cavity communicates with the extension tube and also with the air inlet of the separator (6) Communicate. 2. The cyclone-type dust cup for a vacuum cleaner according to claim 1, characterized in that a three-blade rotating blade (19) is arranged in the extension pipe.

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