Abstract: Disclosed is a ventilation apparatus including an exhaust pipe of an induction hood in which a position change of piping in a discharge direction is freely performed. The ventilation apparatus, which includes a first pipe connected to a suction port through which contaminated air is sucked, a second pipe configured to guide the contaminated air and include a first connection portion connected to the first pipe and a second connection portion extending from the first connection portion, the second pipe being detachably coupled to the first pipe so that the position of the second connection portion is able to be changed, and a third pipe connected to the second pipe and include a discharge port through which the contaminated air is discharged, the third pipe being configured to be rotatable with respect to the second pipe so that the position of the discharge port is able to be changed.

Abstract: Systems, devices and methods provide energy recover, modular systems to build and revise commercial kitchen services, closed circuit exhaust, and high efficiency capture and containment of fumes from cooking processes.

Abstract: A hood device for grill comprises a hood, a telescoping tubing, a filter assembly, a grease cup, and an external fan. The hood partially covers a grill at a first elevated vertical position and collects smokes from the grill. The telescoping tubing extends from the hood and is configured for ventilating, and telescoping between the first and second positions. The filter assembly is disposed at a lower end of the telescoping tubing, and comprises filter with concentric and cylindrical layers. The grease cup is for collecting grease from the filter. The fan is for building up an ascending air current inside the telescoping tubing. A velocity of the ascending air current is determined according to the first elevated vertical position, a ratio of a diameter of the hood to a diameter of the grill, and a surface temperature of the grill.

Abstract: A novel draft hood for mounting on top of a gas conversion unit to form an adaptor and coupler between the gas conversion unit and a chimney includes a box structure having a guide flange and a plurality of positioning flanges thereon. A down draft diverter is installed inside of the box structure juxtaposed the exhaust outlet in the top of the draft hood. A novel spring alignment means including control rod are inserted through the top of the draft hood and employed as a positioning and aligning device maneuverable from the inside of the combustion chamber of the gas conversion unit and employed to apply a spring force to the draft hood which couples it to the gas conversion unit.

Abstract: A fume extraction device for a cook top on a frame which has at least two cooking elements is disclosed. The device is in the form of a drawer which can be raised and lowered in the frame between the cooking elements. There are two openings in the drawer facing the respective cooking elements and filters in the openings. An adjustable baffle is provided for controlling the flow through the openings and there is a further inclined filter in the drawer below the baffle. The drawer can be raised to selected positions depending on the height of fumes being generated during cooking.

Abstract: An exhaust device having a cover member which can be put directly on a cooking unit or in a position near the cooking unit. The cover member is provided with a top opening communicated with a fan unit through a connecting tube means which has a telescopic tube section for adjusting the height of the cover and a rotatable section to permit the connecting tube to move laterally. The exhaust device is effective for smoke-exhaustion, thereby saving the energy consumption.

Abstract: A smoke shield assembly for an over-the-range oven includes a magnetically hinged deflecting shield movable between stored and in use positions. The assembly includes a metal base secured to a forwardly positioned bottom metal member of the over-the-range oven by four magnets. Two of the magnets securing the base to the oven also form a magnetic hinge that secures the deflecting shield to the base. The two other magnets securing the base to the oven further maintain the deflecting shield in the stored position. The deflecting shield is metal having a generally U-shaped pivot end magnetically secured to the base. The pivot end may have an unhemmed pivot edge or a hemmed pivot edge to ease pivoting between the stored and in use positions.

Abstract: A vent apparatus for a surface cooking appliance comprises a vertically slidable closure mounted to slide in a duct in the surface of the appliance. The closure has a slide engaging a track in the front of the duct below the surface of the appliance, an open side within which filters may be removably mounted.