The invention relates to a method for producing a contoured filter element, according to which method at least one filtering medium is applied to a flat backing material and is detachably secured thereto. The filtering medium is cut out on the backing material to form the contoured filter element and said contoured filter element can be detached from the backing material for use. The invention also relates to a filter element arrangement produced by means of this method.

The invention relates to a method for producing a contoured filter element, according to which method at least one filtering medium is applied to a flat backing material and is detachably secured thereto. The filtering medium is cut out on the backing material to form the contoured filter element and said contoured filter element can be detached from the backing material for use. The invention also relates to a filter element arrangement produced by means of this method.

Proposed is a method of controlling a portable air-flow guiding apparatus including adjusting at least one of an angle in a horizontal direction of a head unit including a sucking unit by a horizontal angle adjustment unit of the portable air-flow guiding apparatus and a height of the head unit by a height adjustment unit of the portable air-flow guiding apparatus according to a position of a heating source and a height of a cooking utensil.

Proposed is a method of controlling a portable air-flow guiding apparatus including adjusting at least one of an angle in a horizontal direction of a head unit including a sucking unit by a horizontal angle adjustment unit of the portable air-flow guiding apparatus and a height of the head unit by a height adjustment unit of the portable air-flow guiding apparatus according to a position of a heating source and a height of a cooking utensil.

Apparatuses, systems, and methods operable to reduce catalyst fouling by removing solid particulates from a heated fluid stream upstream of a catalyst using one or more flue gas strainer apparatuses that may be cleaned or serviced without ceasing or disrupting heating or catalytic operations. The flue gas strainer apparatuses may include a housing having a front end and a back end, the housing comprising a receiving portion, an outer edge, an inner edge, and an inner bore extending from the front end to the back end of the housing along the inner edge. The inner bore is operable to allow a heated fluid stream to pass therethrough. The flue gas strainer apparatus may also include a moveable strainer portion comprising one or more removable mesh portions. Each of the one or more removable mesh portions may have a plurality of pores and configured to capture solid particulates suspended in the heated fluid stream. The one or more removable mesh portions may be operable to be removingly received in the receiving portion of the housing.

Apparatuses, systems, and methods operable to reduce catalyst fouling by removing solid particulates from a heated fluid stream upstream of a catalyst using one or more flue gas strainer apparatuses that may be cleaned or serviced without ceasing or disrupting heating or catalytic operations. The flue gas strainer apparatuses may include a housing having a front end and a back end, the housing comprising a receiving portion, an outer edge, an inner edge, and an inner bore extending from the front end to the back end of the housing along the inner edge. The inner bore is operable to allow a heated fluid stream to pass therethrough. The flue gas strainer apparatus may also include a moveable strainer portion comprising one or more removable mesh portions. Each of the one or more removable mesh portions may have a plurality of pores and configured to capture solid particulates suspended in the heated fluid stream. The one or more removable mesh portions may be operable to be removingly received in the receiving portion of the housing.

A grease filter for installation within an aperture of an exhaust hood overlying kitchen equipment where heat or flame may occur, the grease filter comprising an external frame assembly, a UL 1046 listed grease filter, and a removable perforated insert. The external frame assembly defines a pathway for airflow therethrough and partially defines a first chamber of the grease filter and a second chamber of the grease filter. The UL 1046 listed grease filter being disposed within the first chamber of the grease filter and being secured within the external frame assembly. The removable perforated insert being disposed within the second chamber of the grease filter and wherein the external frame assembly is configured to allow the removable perforated insert to be removably installed within the second chamber in a spaced relation from the UL 1046 listed grease filter.

A grease filter for installation within an aperture of an exhaust hood overlying kitchen equipment where heat or flame may occur, the grease filter comprising an external frame assembly, a UL 1046 listed grease filter, and a removable perforated insert. The external frame assembly defines a pathway for airflow therethrough and partially defines a first chamber of the grease filter and a second chamber of the grease filter. The UL 1046 listed grease filter being disposed within the first chamber of the grease filter and being secured within the external frame assembly. The removable perforated insert being disposed within the second chamber of the grease filter and wherein the external frame assembly is configured to allow the removable perforated insert to be removably installed within the second chamber in a spaced relation from the UL 1046 listed grease filter.

Embodiments relate generally to methods and systems for refreshing filter media within a respirator and indicating end of service life for the filter media. A respirator may comprise a rollable filter media configured to be refreshed by rolling the filter media onto a roller. A rolling mechanism may rotate the roller, allowing for a fresh section of filter media to be placed in the air path of the respirator. The rolling mechanism may be controlled automatically by a motor and/or manually.

An effluent processing apparatus is provided for a vehicle air brake charging system. The effluent processing apparatus comprises an inlet port through which effluent from a purge valve of an air dryer can be received and an outlet port. The effluent processing apparatus also comprises a spiral-shaped effluent channel having a portion of decreasing channel width disposed between the inlet port and the outlet port. The spiral-shaped effluent channel is provided for increasing velocity of an effluent stream as the effluent stream flows through the decreasing channel width portion of the spiral-shaped effluent channel.