740 results about "Dust collection system" patented technology

A dirt collecting system for a vacuum cleaner includes a dirt cup formed from a cylindrical sidewall having a disc shaped member separating the dirt cup into an upper portion and a lower portion. The dirty airstream flows past the disc shaped member from the upper portion to the lower portion through a small gap between the outer periphery of the disc shaped member and the sidewall of the dirt cup. The disc shaped member is supported on a centrally located conduit which has apertured walls located both above and below the disc shaped member. The apertured walls allows the airstream to flow into the conduit for further filtering or exiting the dirt cup. The apertured wall located above the disc shaped member improves sustained performance by enabling the airstream to continue to flow through the dirt cup as the lower portion of the dirt cup fills with large dirt particles and the apertured wall located beneath the disc shaped member becomes increasingly restricted. In the various embodiments of the invention, the airstream is directed through the conduit to a fine particle filter located in a compartment at the bottom of the dirt cup, at the top of the dirt cup or into filter sock located at the upper end of the dirt cup. Alternately, the fine particle filter may be located in a separate container located above or below the dirt container.

An accessory system, such as a dust collection system (40) of a hand held power tool, such as a drilling and/or hammering tool comprising, the tool, an accessory unit (40) comprising a separate motor for powering the unit and releasably mountable on the tool, and a battery pack (4). When the accessory unit is not required, the battery pack can be mounted directly on the tool for powering to tool and when the accessory unit is required the battery pack can be mounted on the accessory unit for powering the accessory unit and, when the accessory unit is mounted on the tool, for powering the tool via the accessory unit.

The invention relates to a static dedusting device, which comprises: a static deduster, a expert controller, and a sensor inside the static deduster. Wherein, the outlet of sensor is connected to the inlet of expert controller; the outlet of expert controller is connected to the electric field voltage control circuit of static deduster; the sensor detects the data of static deduster to be transmitted to the expert controller to be analyzed and treated and generate a control signal to control the electric filed voltage control circuit, and adjust the dedusting force to stabilize the powder density of outlet at preset valve. The invention can solve the problems that the change of powder density at the inlet is lag to discharged powder density; while it can reduce energy consumption with qualified powder density at outlet. Via bus system, the network control system can be built to realize remote detection on each note, modifying note expert controller and the control parameters of static deduster.