A vacuum filter bag includes an inlet flange and gasket and a plug. The inlet flange includes axial ribs and recesses which improve the seal between the inlet gasket and a vacuum inlet port and prevent accidental removal of the filter bag from the vacuum inlet port. The plug more securely closes the filter inlet opening after use of the filter bag. The filter bag reduces user exposure to dust and debris captured with a vacuum and is particularly suited for minimizing exposure to hazardous materials.

Apparatus and method for receiving and holding debris in a collection chamber of a vacuum cleaner. The collection chamber has an inlet opening through which debris-entrained air enters the collection chamber. When the vacuum cleaner is off, an internal valve prevents debris from leaving the collection chamber through the inlet opening. The internal valve is movable from a first sealed position, in which the internal valve covers the chamber inlet opening, to a second unsealed position in which the internal valve does not cover the chamber inlet opening.

A dust remover for a vacuum cleaner, in which dust adhering to a plurality of filters having a cylindrical shape for filtering dust introduced into the vacuum cleaner is removed by repeatedly hitting an inner wall of each of the plurality of filters through rotation of a motor, includes a filter support plate having a plate shape; a plurality of filters arranged spaced apart from each other at regular intervals below the filter support plate in a circumferential direction; a hitting module rotatably provided on the filter support plate to extend to an inner space of each of the filters and configured to hit an inner surface of each of the filters; and a pressure control damper rotatably provided on the filter support plate and configured to optionally open/close a suction pressure of each of the filters.

A vacuum unit includes a debris tank receiving wet or dry waste. A multi-cyclone separator is coupled to an outlet of the debris tank. The multi-cyclone separator receives the wet or dry waste from the debris tank and the multi-cyclone separator includes a plurality of cyclones. A filter is coupled to the outlet of the multi-cyclone separator and receives exhaust airflow from the multi-cyclone which then flows onto the blower or fan and is vented external to the vacuum unit.

A separation structure for a dust cup of a vacuum cleaner is provided and includes a main body and a separator. The separator is fixedly mounted in an internal space of the main body. The internal space of the main body is divided by the separator into a first chamber, a second chamber and a third chamber. The separator is provided with a through hole, an air intake portion and a plurality of sedimentation portions communicated with the air intake portion. The plurality of sedimentation portions are arranged around the air intake portion. A length of the air intake portion is smaller than a length of each of the plurality of sedimentation portions. The air intake portion is communicated with the second chamber, the plurality of sedimentation portions are communicated with the third chamber. The first chamber is communicated with the second chamber via the through hole.

The invention comprises a vacuum cleaner filter bag (1), comprising a bag wall (2) and a retaining plate (3), wherein the retaining plate (3) is connected to an at least partially cylindrical connection piece (4) which extends in a direction perpendicular to a passage opening (5) formed in the retaining plate (3), wherein the bag wall (2) is connected with the lateral surface of the connection piece (4) along the circumference thereof.

A suction apparatus includes a suction apparatus housing, including a filter for cleaning a suction flow, wherein the suction apparatus housing has at least one filter fastening element for securing the filter to the suction apparatus housing, and including a filter cleaning device for mechanically cleaning the filter. The filter, the filter fastening element and the filter cleaning device are arranged within the suction apparatus housing. The filter cleaning device includes an actuation device and a hammer device. The actuation device and the hammer device interact such that the hammer device can be actuated by using the actuation device and, when actuated, the hammer device applies at least one pulse to the filter securing element.

A debris canister and filter assembly, which may be used in a vehicular vacuum cleaner, includes a debris canister having an inlet, an outlet, and a peripheral side wall. The peripheral side wall at least partially defines an interior space of the debris canister. A filter is disposed in the interior space of the debris canister, and includes filter media having a non-pleated portion and a pleated portion. The peripheral side wall forms a corner of the debris canister, and the filter media has a rounded-corner shaped to fit adjacent to the corner of the peripheral side wall.

A vacuum cleaner includes an air inlet, a filter, a fan, and a main air outlet. The filter has a clean side and an unclean side. An unclean air chamber is formed between the air inlet and the unclean side of the filter. A first air chamber is formed between the clean side of the filter and the fan. An air outlet chamber is formed between the fan and the main air outlet. The upstream end of the air outlet chamber is connected to the first air chamber. An airflow may enter the vacuum cleaner from an external environment via the air inlet under the action of the fan, and sequentially passes through the unclean air chamber, the filter, the first air chamber and the air outlet chamber the main air outlet. The vacuum cleaner may include a self-cleaning air passage and an air supply air passage.

A clothes dryer has a front support and a filter apparatus. The front support includes a drying air duct having an air outlet that communicates with a circulation air duct arranged inside the clothes dryer. An air inlet of the drying air duct communicates with a clothes treating chamber of the clothes dryer. The filter apparatus is inserted into and mounted in the air duct from the air inlet and covers the whole cross section of the drying air duct. The entire filter apparatus can be accommodated and mounted in the internal space of the front support, so that the area of the filter apparatus blocking thread scraps is increased, and the filtering efficiency is improved.