Abstract:
A surface cleaning apparatus comprises a floor cleaning unit having a surface cleaning head, an upright section having a handle, a cleaning unit removably mounted to the handle and an air flow conduit forming part of an air flow path from the surface cleaning head to the cleaning unit, wherein the flexible air flow conduit comprises a portable portion removably mounted to the surface cleaning apparatus and a rigid extension wand. Reconfiguring the surface cleaning apparatus components permits the use of the surface cleaning apparatus in various operating modes such as a first upright operating mode wherein the surface cleaning apparatus is operable with the cleaning unit mounted to the handle, and a second operating mode wherein the cleaning unit is carried by a user and is operable when removed from the handle.
Abstract:
A surface cleaning apparatus such as a hand vacuum cleaner comprises a first cyclone and at least one additional dirt separation unit. The at least one additional dirt separation unit is visible when the suction motor housing is removed from the hand vacuum cleaner.
Abstract:
A surface cleaning apparatus comprises a cyclone having an open end dirt outlet and a plate facing the open end, the height of a gap between the plate the open end is not constant.
Abstract:
A surface cleaning head comprising one or more lower open sided air flow passages is provided. One or both air flow passages may be a lower open sided air flow passage and may have a rib to prevent carpet of the like from blocking the air flow passage. One of the passages may be a deep cleaning slot.
Abstract:
A surface cleaning apparatus comprises a filtration apparatus comprising at least one cyclone and at least one filter mounted in a filter housing. The filter housing has a lower portion, such as a bottom door, that is openable and the filter is visible, and a dirt collection area upstream of the filter is emptyable, when the lower portion is opened.
Abstract:
A surface cleaning apparatus comprises at least one cyclone positioned at least partially in a dirt collection chamber in communication with the dirt outlet of the cyclone. At least one anti-re-entrainment member is associated with the outer surface of the cyclone and positioned in the dirt collection chamber.
Abstract:
A water treatment apparatus includes a sand filter and a second stage purification step (e.g. ozonation). The sand filter is constructed as a plurality of individual components that are in fluid flow communication. At least that uppermost individual component of the sand filter is removable for cleaning.
Abstract:
An electrostatic filter assembly (50) is provided that utilizes electrostatic forces to attract charged particulate matter entrained in a fluid stream to the operating elements in the electrostatic filter assembly and a residual charge between the particulate matter and the electrostatic filter assembly to retain the separated material in the electrostatic filter assembly (50).
Abstract:
A cyclonic separation device (20) is provided having improved pressure loss characteristics. A fluid supply conduit (46) in flow communication with an inlet (32) to a cyclone (30) is located and configured to extend longitudinally through a central portion of the cyclone (30), whereby the sharp bending of the conduit may be reduced, thereby reducing pressure losses in the device, without unduly interfering with the cyclonic flow within the cyclone. The present invention may be adapted for use with cyclonic separation devices of all types, including single- and multi-stage cyclonic separators. The cyclonic separation device may be incorporated in a vacuum cleaner such as an upright vacuum cleaner. A three dimensional conduit which is optionally used with a cyclonic separator is provided.