CYCLONE SEPARATION DEVICE AND CYCLONE VACUUM CLEANER MOUNTED WITH SAME

• US 20130291334A1
• Filed: 12/23/2011
• Published: 11/07/2013
• Est. Priority Date: 12/29/2010
• Status: Active Grant

• Current Assignee: Ecovacs Robotics (Suzhou) Co. Ltd.
• Original Assignee: ECOVACS Robotics Co., Ltd.
• Inventors: Peng, Zhongmei
• Granted Patent: US 8,984,712 B2
• Time in Patent Office: Days
• US Class Current: 15/353
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: A47L 9/165 Construction of inlets

Abstract

A cyclone separation device (102, 202) and a cyclone vacuum cleaner (100, 200) mounted with the device. A first cyclone separation unit in the cyclone separation device (102, 202) comprises a dust bucket (10) and a mesh filter (7) with air holes (7a). Airflow enters the first cyclone separation unit to undergo first gas-solid separation. The airflow after the separation enters a second cyclone separation unit through the air holes (7a) of the mesh filter (7). A filter in the second cyclone separation unit comprises a plurality of cyclone barrels (31). An upper end and a lower end of the cyclone barrel (31) are open. A first air inlet (31a) and a second air inlet (31b) are disposed on a side wall of the cyclone barrel (31). The airflow (41a, 41b) after the gas-solid separation enters the first air inlet (31a) and the second air inlet (31b) through a first airflow passage and a second airflow passage respectively, is mixed in the cyclone barrel (31), and then undergoes second gas-solid separation. The airflow after the gas-solid separation is discharged from an opening at the upper end of the cyclone barrel (31). In the cyclone separation device (102, 202), the direction of travel of the airflow and the cross-sectional area of the air inlet are changed, thereby improving a separation effect. The cyclone vacuum cleaner (100, 200) mounted with the cyclone separation device (102, 202) increases separation efficiency and improves an air purification effect.

Claims

1. A cyclone separation device, comprising a first cyclone separation unit and a second cyclone separation unit, in which,

the first cyclone separation unit includes a dust bucket having a tangential inlet and a mesh filter having air holes, airflow enters the first cyclone separation unit from the tangential inlet to undergo a first gas-solid separation, the airflow after the first gas-solid separation enters the second cyclone separation unit through the air hole;

the second cyclone separation unit includes a separator and a connecting barrel, the separator comprises a plurality of cyclone barrels, the upper end and lower end of the clone barrels are opened, a first air inlet and a second air inlet are provided on the side wall of the clone barrels wherein,

the airflow after the first gas-solid separation includes a first airflow and a second airflow, the first airflow enters each of the first air inlets through a first airflow passage, the second airflow enters each of the second air inlets through the gaps among the outer walls of the plurality of cyclone barrels in a second airflow passage, the first airflow and the second airflow undergo a second gas-solid separation within the cyclone barrels, the airflow after the second gas-solid separation flows to the opening of the upper end of the cyclone barrels.

2. The cyclone separation device of claim 1, characterized in that, the first air inlet and the second air inlet are symmetrically distributed on the side walls of the cyclone barrels.

3. The cyclone separation device of claim 1, wherein a connecting barrel sealing cover is provided below the separator, a circular hole is provided on the connecting barrel sealing cover, wherein the number of circular holes on the connecting barrel sealing cover is equal to the number of the cyclone barrels.

4. The cyclone separation device of claim 1, wherein a diameter of the circular hole on the connecting barrel sealing cover is greater than or equal to a diameter of the lower end of each cyclone barrel, but is smaller than a diameter of the upper end of the cyclone barrel, the cyclone barrels are connected with a connecting barrel through the circular holes of the connecting barrel sealing cover.

5. The cyclone separation device of claim 3 wherein the connecting barrel sealing cover is hermetically connected with the connecting barrel.

6. The cyclone separation device of claim 1, wherein both the first airflow passage and the second airflow passage comprise a gap between the inner wall of the mesh filter and the outer wall of the connecting barrel.

7. The cyclone separation device of claim 6, wherein the cyclone separation device comprises a tapered hole cover, which is located above the dust bucket, the first airflow passage also comprises a gap among the outer wall of the separator, the inner wall of the tapered hole cover as well as the inner walls of the mesh filter.

8. The cyclone separation device of claim 1, wherein the second airflow passage also comprises a recess provided on the outer walls of the separator, the second airflow enters the gaps between the outer walls of the plurality of cyclone barrels through the recess.

9. The cyclone separation device of claim 1, wherein the air holes are a plurality of through holes provided on the mesh filter.

10. The cyclone separation device of claim 1, wherein the first air inlet and the second air inlet have the same cross-sectional areas.

11. The cyclone separation device of claim 1, wherein the number of the cyclone barrels is 6 to 12, which are evenly distributed around the central axis of the separator.

12. The cyclone separation device of claim 11, wherein the number of the cyclone barrels is 8.

13. The cyclone separation device of claim 11, characterized in that, the first air inlet of the cyclone barrels opens towards the outer side of the separator, and the second air inlet of the cyclone barrels opens towards the inner side of the separator.

14. The cyclone separation device of claim 11, wherein the cyclone separation device is further provided with a central cyclone barrel, which is provided at the central position of the separator, two air inlets are provided on the side wall of the central cyclone barrel, the second airflow enters the two air inlets through the second airflow passage.

15. The cyclone separation device of claim 1, wherein an angle between the axis of the cyclone barrels and the axis of the cyclone separation device is 6°

˜

12°

.

16. The cyclone separation device of claim 15, wherein the angle between the axis of the cyclone barrels and the axis of the cyclone separation device is 8°

.

17. A cyclone vacuum cleaner, comprising a vacuum cleaner body and a suction head, the vacuum cleaner body is provided with a cyclone separation device, the cyclone separation device comprises a first cyclone separation unit and a second cyclone separation unit, in which

the first cyclone separation unit includes a dust bucket having a tangential inlet and a mesh filter having air holes, airflow enters the first cyclone separation unit from the tangential inlet to undergo a first gas-solid separation, the airflow after the first gas-solid separation enters the second cyclone separation unit through the air hole;

the second cyclone separation unit includes a separator and a connecting barrel, the separator comprises a plurality of cyclone barrels, the upper end and lower end of the clone barrels are opened, a first air inlet and a second air inlet are provided on the side wall of the clone barrels,

wherein, the airflow after the first gas-solid separation includes a first airflow and a second airflow the first airflow enters each of the first air inlets through a first airflow passage, the second airflow enters each of the second air inlets through the gaps among the outer walls of the plurality of cyclone barrels in a second airflow passage, the first airflow and the second airflow undergo a second gas-solid separation within the cyclone barrels, the airflow after the second gas-solid separation flows to the opening of the upper end of the cyclone barrels.

18. The cyclone vacuum cleaner of claim 17, both the first airflow passage and the second airflow passage comprise a gap between the inner wall of the mesh filter and the outer wall of the connecting barrel.

19. The cyclone vacuum cleaner of claim 18, the cyclone separation device comprises a tapered hole cover, which is located above the dust bucket, the first airflow passage also comprises a gap among the outer wall of the separator, the inner wall of the tapered hole cover as well as the inner walls of the mesh filter.

20. The cyclone vacuum cleaner of claim 17, the second airflow passage also comprises a recess provided on the outer wails of the separator, the second airflow enters the gaps between the outer walls of the plurality of cyclone barrels through the recess.