A filter device for a fume extraction device includes at least two filter elements arranged at an angle relative to one another, and a holding frame for holding the at least two filter elements. An edge of one of the at least two filter elements lies adjacent to an edge of the other one of the at least two filter element. Each of the at least two filter elements has a surface with a variable distance between opposite outer faces of the filter element.

The present invention relates to an appliance comprising, a regenerative filter for filtering a fluid flow, having at least one filter, a filter regenerator for regenerating the regenerative filter, a turbine for driving the filter regenerator, the turbine being driven by the fluid flow passing through the appliance during its use.

A gas conditioning unit for a surgical gas delivery device is disclosed, which includes a filter housing having an insufflation gas flow path for delivering insufflation gas to a body cavity and for facilitating pressure measurements from the body cavity, a pressurized gas flow path for delivering pressurized gas from a pump in the surgical gas delivery device to an internal nozzle in the filter housing that accelerates the pressurized gas and thereby generates a continuous pressure barrier that inhibits egress of insufflation gas from the body cavity, a vacuum return flow path for returning depressurized gas spent by the internal nozzle back to the pump under vacuum, an air entrainment flow path for drawing air into the body cavity to maintain a given pressure therein, and a smoke evacuation flow path for conveying smoke from the body cavity.

A vehicular exhaust filter (2) comprising a porous substrate having an inlet face and an outlet face with the porous substrate comprising inlet channels extending from the inlet face and outlet channels extending from the outlet face is disclosed. The inlet channels and the outlet channels are separated by a plurality of filter walls having a porous structure.

The vehicular exhaust filter (2) is loaded with a refractory powder having a tapped density before loading of less than 0.10 g/cm.sup.3 and the vehicular exhaust filter has a mass loading of the refractory powder of less than 10 g/l.

The present application relates to a system for quality management of a filter unit disposed in an intake passage. The system includes a plurality of evaluation parameter detection units configured to detect an evaluation parameter relating to of each filter constituting a filter layer of the filter unit. By determining a distribution of the evaluation parameter based on the detection values, the quality evaluation is performed.

A method, system, and apparatus for cooling a product comprises a chilling assembly further comprising a liquid flow assembly including a main conduit, at least one delivery conduit attached to the main conduit, and at least one nozzle attached to the delivery conduit wherein liquid is distributed onto a product from the at least one nozzle; and an airflow assembly including an air pump and at least one input conduit wherein the air pump drives airflow through the input conduit; a conveyor assembly conveys the product through the chilling assembly and a drain pan is configured below the conveyor assembly for collecting drainage and waste.

A central controller for completely cleaning indoor air pollution is disclosed. The central controller is disposed in an indoor space to detect air pollution and output air pollution data. Intelligence operations are implemented in accordance with the air pollution data by the central controller to determine a location of the air pollution, and a controlling instruction is intelligently and selectively issued through a wireless communication transmission to enable a plurality of physical filtration devices or a plurality of chemical filtration devices. Each physical filtration device or each chemical filtration device includes a fan and a filter element. The fan is driven upon receiving the controlling instruction to generate an airflow convection in a direction. The air pollution is removed through the filter element, so that the air pollution in the indoor space is completely cleaned to form a clean and safe breathing air state.

A central controller for completely cleaning indoor air pollution is disclosed. The central controller is disposed in an indoor space to detect air pollution and output air pollution data. Intelligence operations are implemented in accordance with the air pollution data by the central controller to determine a location of the air pollution, and a controlling instruction is intelligently and selectively issued through a wireless communication transmission to enable a plurality of physical filtration devices or a plurality of chemical filtration devices. Each physical filtration device or each chemical filtration device includes a fan and a filter element. The fan is driven upon receiving the controlling instruction to generate an airflow convection in a direction. The air pollution is removed through the filter element, so that the air pollution in the indoor space is completely cleaned to form a clean and safe breathing air state.

An electric switching unit comprises a casing and a plurality of arc extinguishing chambers formed inside the casing, each arc extinguishing chamber comprising a gas discharge orifice opening to outside the casing.

The electric switching unit comprises a filtering device positioned outside the casing and comprising: a plurality of inlet openings placed on a lower region of the filtering device, each one being configured to collaborate fluidically with one of the said gas discharge orifices; an outlet opening placed on a lateral region of the filtering device; a common internal chamber which places the inlet openings in fluidic communication with the outlet opening; and a filter located inside the internal chamber between the inlet openings and the outlet opening.

The present invention relates to a surface cleaning apparatus comprising a regenerative filter having at least one filter, the at least one filter comprising a plurality of layers of filter material, the filter having a first filtering configuration where the plurality of layers are held together such that air to be cleaned can pass through the plurality of layers of filter media during use of the surface treating apparatus, and a second regeneration configuration wherein at least a portion of one of the plurality of layers of filter material is spaced from the remainder of the layers of filter material for regeneration, and a filter regenerator for regenerating the filter material.