Range hood with liquid filter

摘要

A range hood for a kitchen range or other similar appliance is disclosed. The range hood is adapted to be coupled to a blower to draw the contaminated effluent stream from the range into the hood. The effluent stream is drawn through a substantially horizontal perforated liquid support or impingement tray that is filled with a working liquid, and is then passed through a high-efficiency mist eliminator. The range hood offers a substantially straight airflow path from a point just inside the inlet to the outlet. The range hood also has a low profile, and offers direct access to its interior components for easy inspection and cleaning.

主权项

1. A range hood, comprising:
an inlet and an outlet, the inlet being adapted to accept a contaminated effluent stream and the outlet being adapted to be connected directly or indirectly to a blower such that in an operational condition of the range hood, a pressure drop is maintained across the range hood from inlet to outlet, thus drawing the effluent stream from the inlet toward the outlet, the inlet and the outlet being arranged relative to one another such that a relatively straight airflow path is provided for the effluent stream from a point just inside the inlet to the outlet; a substantially horizontally-extending liquid support provided in the airflow path, the liquid support being constructed and arranged to support liquid and having a plurality of perforations such that, in the operational condition, liquid is supported on and retained by the liquid support at least in part by the pressure drop across the range hood, the liquid support being provided in the airflow path such that, in the operational condition, the contaminated effluent stream flows through the liquid support and any liquid supported thereon as it flows along the airflow path; an upper liquid inlet in fluid communication with a liquid source; a reservoir space adjacent to the liquid support, the reservoir space being constructed and arranged to accept and contain liquid from the liquid inlet; and a first partition between the reservoir space and the liquid support, the first partition being arranged such that when the reservoir space is filled to overflow, liquid from the reservoir space moves over the first partition and across the liquid support, thereby skimming the liquid supported on the liquid support; a second partition opposite the first partition on the other side of the liquid support, the second partition creating a drain space for material that is skimmed from the liquid support; and a cover extending over the second partition so as to define a gap between the second partition and the cover, the gap being sized so as to control the rate at which liquid and material is allowed to flow into the drain space.