| 摘要 |
A dust collection device includes a machine body that forms an air chamber and a chassis arranged below the machine body. The chassis receives therein a dust collection tank. A mechanics case that contains a motor and blower assembly is arranged at one side of the machine body. The mechanics case includes a partition board to divide the mechanics case into an inlet flow channel communicating the air chamber and an outlet flow channel for discharging air. The partition board forms an air vent hole in communication with the outlet flow channel. A block unit is provided on the partition board and includes a block plate that selectively blocks the air vent hole. When a fire occurs inside the air chamber, the partition board prevents the fire flame from being drawn into the mechanics case, and the block plate timely blocks the air vent hole to improve operation safety. |
