초록 ▼

A motor assembly for a vacuum cleaner for providing a user with a quieter environment during a cleaning work, and a vacuum cleaner having the same, is disclosed. The motor assembly includes a motor generating a suction force, an auxiliary filter member disposed on an airflow path connecting the moto

A motor assembly for a vacuum cleaner for providing a user with a quieter environment during a cleaning work, and a vacuum cleaner having the same, is disclosed. The motor assembly includes a motor generating a suction force, an auxiliary filter member disposed on an airflow path connecting the motor to a dust-collecting apparatus for filtering a second time the air discharged from the dust-collecting apparatus, and a motor casing. The motor casing includes a first chamber connected to the dust-collecting apparatus with the auxiliary filter member mounted therein. A second chamber is connected to a discharge opening of the cleaner body and includes the motor mounted therein. A connection path is in fluid communication with the first chamber and the second chamber.

대표청구항 ▼

What is claimed is: 1. A motor assembly which is mounted in a cleaner body of a vacuum cleaner to generate a suction force to draw in dirt from a cleaning surface, the motor assembly comprising: a motor generating the suction force; an auxiliary filter member disposed on an airflow path connecting

What is claimed is: 1. A motor assembly which is mounted in a cleaner body of a vacuum cleaner to generate a suction force to draw in dirt from a cleaning surface, the motor assembly comprising: a motor generating the suction force; an auxiliary filter member disposed on an airflow path connecting the motor to a dust-collecting apparatus in which the dirt is separated from external air drawn in by the suction force, the auxiliary filter member for filtering a second time air discharged from the dust-collecting apparatus; and a motor casing with a first chamber and a second chamber divided therein, and including a connection path in fluid communication with both the first chamber and the second chamber, wherein the first chamber is connected to the dust-collecting apparatus and including the auxiliary filter member mounted therein, and an entrance opening in an outer wall of the cleaner body that is exposed to the outside of the cleaner body, and the auxiliary filter member being removably mounted in the first chamber through the entrance opening and the second chamber connected to a discharge opening of the cleaner body and including the motor mounted therein. 2. The motor assembly of claim 1, wherein the motor casing further comprises a mounting member removably mounted in the first chamber through the entrance opening, the mounting member comprising: a supporting portion supporting the auxiliary filter member; and a cover disposed at one side of the supporting portion and covering the entrance opening when the supporting portion is inserted into the first chamber to block the entrance opening from the outside of the cleaner body. 3. The motor assembly of claim 2, further comprising a sealing member disposed along an edge of at least one of the entrance opening and the cover. 4. The motor assembly of claim 1, wherein the motor casing comprises: a first casing in which the first chamber is formed, and including a first port in fluid communication with the first chamber and the dust collecting apparatus; and a second casing connected to the first casing to form the second chamber in the motor casing, and including a second port connecting the second chamber to the discharge opening of the vacuum cleaner, the connection path includes a connection hole penetratingly formed in one side of the first casing, to connect the first and the second chambers when the first and the second casings are connected to each other. 5. The motor assembly of claim 4, wherein the second casing further comprises a guide duct guiding the air which is drawn into the second chamber through the connection hole so that the air swirls in the second casing along a circumferential direction of the motor by a predetermined distance and is then discharged though the second port. 6. The motor assembly of claim 1, wherein the motor casing further comprises a guide duct guiding the air which is drawn into the second chamber through the connection path so that the air swirls in the motor casing along a circumferential direction of the motor for a predetermined distance and is discharged through the discharge opening. 7. A vacuum cleaner comprising: a suction assembly with a dirt-suctioning opening; a cleaner body pivotably disposed at one side of the suction assembly and including a dust-collecting chamber and a discharge opening sequentially disposed therein and in fluid communication with the dirt-suctioning opening; a motor assembly disposed in the cleaner body to generate a suction force at the dirt-suctioning opening, and including an upper outside wall forming a bottom of the dust-collecting chamber; and a dust-collecting apparatus disposed in the dust-collecting chamber to separate dirt from external air drawn in through the dirt-suctioning opening, wherein the motor assembly comprises: a motor generating the suction force; and a motor casing including a first chamber and a second chamber divided therein, and including a connection path in fluid communication with both the first chamber and the second chamber, the first chamber being in fluid communication with the dust-collecting apparatus and including an auxiliary filter member mounted therein for filtering a second time air discharged from the collecting apparatus, the second chamber connected to the discharge opening of the cleaner body and including the motor mounted therein. 8. The vacuum cleaner of claim 7, wherein one side of the first chamber is opened by an entrance opening which penetrates through an outer wall of the cleaner body and is exposed to the outside of the cleaner body, and the auxiliary filter member is removably mounted in the first chamber through the entrance opening. 9. The vacuum cleaner of claim 8, wherein the motor casing further comprises a mounting member removably mounted in the first chamber through the entrance opening, the mounting member comprising: a supporting portion supporting the auxiliary filter member; and a cover disposed at one side of the supporting portion for covering the entrance opening when the supporting portion is inserted into the first chamber to block the entrance opening from the outside of the cleaner body. 10. The vacuum cleaner of claim 9, further comprising a sealing member disposed along an edge of at least one of the entrance opening and the cover. 11. The vacuum cleaner of claim 7, wherein the motor casing comprises a guide duct guiding the air which is drawn into the second chamber through the connection path so that the air swirls in the motor casing along a circumferential direction of the motor by predetermined distance and is discharged through the discharge opening. 12. The vacuum cleaner of claim 7, wherein the motor casing comprises: a first casing in which the first chamber is formed, and including a first port in fluid communication with the first chamber and the dust collecting apparatus; and a second casing connected to the first casing to form the second chamber in the motor casing, and including a second port connecting the second chamber to the discharge opening of the cleaner body, the connection path including a connection hole penetratingly formed in one side of the first casing connecting the first and the second chambers when the first and the second casings are connected to each other. 13. The vacuum cleaner of claim 12, wherein the second casing further comprises a guide duct guiding the air which is drawn into the second chamber through the connection hole so that the air swirls in the second casing along a circumferential direction of the motor by a predetermined distance and is discharged through the second port. 14. The vacuum cleaner of claim 12, wherein the dust-collecting apparatus comprises a cyclone dust-collecting apparatus which separates dirt from air by using a centrifugal force generated by swirling the air drawn in through the dirt-suctioning opening, and the cyclone dust-collecting apparatus comprises: a cyclone head portion fixed to an upper end of the dust-collecting chamber and is in fluid communication with the dirt-suctioning opening and the motor casing; and a dirt-collecting receptacle removably disposed at a lower end of the cyclone head portion to form a cyclone chamber, the dirt centrifugally separated at the cyclone chamber and collected on the dirt-collecting receptacle. 15. The vacuum cleaner of claim 14, wherein the dust-collecting chamber is provided with an ascending/descending unit ascending the dirt-collecting receptacle and inserted into the dust-collecting chamber to connect the dirt-collecting receptacle to the cyclone head portion, the ascending/descending unit disposed on an upper outside wall of the motor assembly. 16. The vacuum cleaner of claim 15, wherein the ascending/descending unit comprises: a lever pivotably disposed at the upper outside wall of the motor assembly; a disk disposed on an upper portion of the lever in a vertically movable manner for supporting a lower surface of the dirt-collecting receptacle inserted in the dust-collecting chamber; and a cam driving unit disposed between the level member and the disk for ascending/descending the disk when the lever pivots. 17. A motor assembly of a vacuum cleaner, which is mounted in a cleaner body to generate a suction force to draw in dirt from a cleaning surface, the motor assembly comprising: a motor generating the suction force; and a motor casing including a chamber formed therein to mount the motor and a first port connecting the chamber to a dust-collecting apparatus separating the dirt from external air drawn into the cleaner body by the suction force and a second port connecting the chamber to a discharge opening of the cleaner body, the motor casing comprising a guide duct guiding the air drawn in though the first port so that the air swirls in the motor casing along a circumferential direction of the motor by a predetermined distance and is discharged through the second port, and a first chamber and a second chamber divided by a partition traversing inside the casing. 18. The motor assembly of claim 17, wherein the first chamber is formed on an airflow path connecting the first and the second ports, and an auxiliary filter member is removably disposed in the first chamber for filtering the air drawn into the first chamber through the first port. 19. The motor assembly of claim 18, wherein one side of the first chamber is opened by an entrance opening which penetrates through an outer wall of the cleaner body and is exposed to the outside of the cleaner body, and the auxiliary filter member is removably mounted in the first chamber through the entrance opening. 20. The motor assembly of claim 19, wherein the motor casing further comprises a mounting member removably mounted in the first chamber through the entrance opening, and the mounting member comprises: a supporting portion supporting the auxiliary filter member and including a plurality of penetrating holes enabling a fluid communication between the first port and the second chamber; and a cover disposed at one side of the supporting portion, to cover the entrance opening when the supporting portion is inserted into the first chamber. 21. The motor assembly of claim 17, wherein the second chamber is connected to the first chamber through a predetermined connection path, and the motor is mounted in the second chamber. 22. The motor assembly of claim 17, wherein the connection path is a connection hole penetratingly formed in the partition.