Abstract: A smoke exhauster includes a motor attached to a housing, and a fan device attached to the motor and to be driven by the motor. The fan device including an upper plate, a lower plate having a bore, and a number of fan blades secured between the upper and the lower plates to form a chamber between the upper and the lower plates and to allow air to flow into the chamber of the fan device via the bore of the lower plate. Each of the fan blades includes a lower cut-off portion to allow the air to flow deeper into the chamber of the fan device before contacting with or scooped by the fan blades.

Abstract: A smoke exhauster includes a housing having an inclined plate extended forwardly and downwardly from an upper panel of the housing, a fan casing includes an upper panel secured to the upper plate of the housing to support one or more motors or fan devices, and includes a cut off portion formed in the front portion to receive the inclined plate of the housing and to allow the fan casing to be disposed forwardly relative to the housing, The fan casing and thus the fan device are disposed forwardly relative to the housing for allowing the fan device to effectively draw smoke or the like.

Abstract: A smoke exhauster includes a housing having a front opening and a rear orifice, for receiving two filter devices respectively. One or more fan devices are disposed in the housing for generating air to flow through filter devices, and a device may be used for selectively guiding the air to flow through either of the filter devices and includes one or more stop panels secured to the housing for blocking the air passages to the filter devices or includes a cover engaged onto the orifice of the housing for blocking the orifice of the housing.

Abstract: A smoke exhauster includes a motor and a fan device attached to a housing. The fan device includes an upper and a lower plates each having an outer peripheral portion, and a number of fan blades secured between the outer peripheral portions of the upper and the lower plates for forming a chamber in the fan device. The lower plate has a bore for air to flow or to be drawn into the chamber of the fan device. The fan blades each has an inner section partially extended inward of the bore of the lower plate and has a curvature smaller than the other portion of the blade.

Abstract: A smoke exhauster includes a housing having a front opening and a rear orifice, for receiving two filter devices respectively. One or more fan devices are disposed in the housing for generating air to flow through filter devices, and a device may be used for selectively guiding the air to flow through either of the filter devices and includes one or more stop panels secured to the housing for blocking the air passages to the filter devices or includes a cover engaged onto the orifice of the housing for blocking the orifice of the housing.

Abstract: A smoke exhauster includes a housing having one or more openings for receiving a filter device each. The filter device includes one or more latches for securing the filter device to the housing. One or more springs are disposed between the filter device and the housing for biasing the latches to engage with the housing and for securing the filter device to the housing. The filter device may be detached from the housing without additional tools. A retainer is pivotally secured to the housing for retaining the side of the filter device opposite to the latches.

Abstract: A smoke exhauster includes a housing having a top panel, and a plate secured to the top panel of the housing by a number of fasteners. One or more fan devices are secured to the plate, and a fan casing is secured to the plate for enclosing the fan devices. The plate and the fan casing may be disengaged from the housing for allowing the fan devices and the fan casing to be easily cleaned. An air passage is formed between the top panel of the housing and the plate. A filter device is disposed in the air passage for filtering the exhausted gas drawn through the air passage.

Abstract: A smoke exhauster includes one or more drawing devices secured in a hood for drawing a smoke. A plate is secured to the bottom of the hood and has one or more holes aligned with the drawing devices and has a number of slots formed in the peripheral portion. A casing is disposed on the plate and has a number of grooves formed in the lower peripheral portion for allowing the smoke in the peripheral portion of the plate to be drawn into the casing and for allowing the smoke to be effectively drawn out by the smoke exhauster.

Abstract: A smoke exhauster includes a housing having a top flue. A casing is secured to the housing and has an outlet communicating with the flue and has one or more front openings for engaging with one or more fan devices. A smoke guide is secured to the front portion of the housing and has a chamber for receiving and collecting smoke. The fan devices may draw the smoke in the smoke guide into the casing and outward through the outlet. The smoke guide 20 may receive and collect and guide the smoke for allowing the smoke to be effectively drawn by the fan devices.

Abstract: A smoke exhauster includes bottom opening for engaging with a fan device and includes a fastener secured beside the opening. A net device has a portion secured to the smoke exhauster opposite to the fastener and includes an ear having a notch for engaging with the fastener and for allowing the ear to be secured to the smoke exhauster without disengaging the fastener from the smoke exhauster. The ear includes an oblong hole communicating with the notch for allowing the fastener to be engaged into the oblong hole.

Abstract: A smoke exhauster includes a CPU, two motors and a switching circuit connected to the CPU. The switching circuit includes a common contact, a parallel contact for connecting the motors in parallel, and a series contact for connecting the motors in series. The common contact is connected to the parallel contact for allow higher power supply to start the motors, and the common contact is connected to the series contact for reducing power supply to the motors in order to reduce the rotational speed of the motors. The motors are connected in series after the motors are started.

Abstract: A smoke exhauster includes a housing having an opening for receiving an annular tray and a grill. The grill includes a passage having one end located below a drain hole of the annular tray for receiving the fluid and having the other end extended toward the center portion. A container is secured to the center portion of the grill for collecting fluid from the passage, the container including a tube disposed in the center portion for supplying water into the housing for cleaning the housing. The grill and the tray both may be easily secured to the housing.

Abstract: A self-contained cleaning system for smoke exhausters comprising a bowl-shaped housing partially filled with cleaning fluid, and a sprayer tube rotatably secured in a central position within the housing having an upper portion and a lower portion. A plurality of upwardly aligned spout tubes are radially disposed on the upper portion of the sprayer tube, with the lower end of the sprayer tube having a beveled entrance and crescent-shaped apertures formed in proximity thereto. The housing can be mounted under a fan opening of the smole exhauster by engaging securing appendages therein with a wire grid grill covering the fan opening, and the upper end of the sprayer tube coupled to the hub of the fan by a coupling provided thereon.