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Steam system for continuous cleaning of hood fans

a technology for fans and steam systems, applied in the field of continuously cleaning systems of fans, can solve the problems of more expensive cost of electronic control valves using the existing water system pressure than small electric pumps connected, and achieve the effect of improving the cleaning system

Inactive Publication Date: 2007-09-06
CHENG JASON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] In light of the foregoing, an object of this invention is to provide a better cleaning system for hood fans. In particular, by using steam, the condensed aerosols and volatiles and smoke particles are more easily removed from the fan blades. Also, by using steam there is no need to add a detergent or surfactant to an existing source of water.

Problems solved by technology

Accordingly, all that is needed for such devices is a valve, which may be essentially controlled by a pump (e.g., the cost of an electronic control valve using the existing water system pressure can be more expensive than a small electric pump connected to a valve at the fan housing).

Method used

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  • Steam system for continuous cleaning of hood fans
  • Steam system for continuous cleaning of hood fans
  • Steam system for continuous cleaning of hood fans

Examples

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Embodiment Construction

[0014] The invention is for a device and method for continuously cleaning, or degreasing, fan impellers in hoods used for exhausting stovetops or cooktops (the former being used in an exemplary manner herein). The hood is typically mounted on a wall against which the stovetop is installed, or suspended over a stovetop installed on an island. The hood can be a simple canopy, or it can include a housing in which the fans are supported. Water is fed to a steam generator, preferably disposed within the housing of a hood. Steam is generated at a pressure above atmospheric pressure, and the pressurized steam is directed by a conduit to the fan impeller, preferably so that the hub, the blades, and any other part of the impeller that normally comes into contact with the cooking fumes being exhausted is impinged by the steam. Because there is no superheater for the steam generated, the pressurized steam is essentially saturated steam at elevated pressure and temperature.

[0015] As shown in F...

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Abstract

A device and method for cleaning fans in range or stove hoods by spraying steam onto the fan impeller area on which soot and cooking fumes condense to clean the impeller and wash the accumulated condensates down a drain. By using steam above atmospheric pressure as the cleaning fluid, the device uses significantly less water that other devices that spray water or an aqueous solution to clean the fan blades.

Description

RELATED APPLICATIONS [0001] This application is based on U.S. patent application Ser. No. 11 / 600,469, filed 16 Nov. 2006, which application is based on provisional application 60 / 772,182, filed Feb. 10, 2006, the disclosures of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] This invention relates to a system for continuously cleaning fans operating in a ventilation hood for a stove or other cooking device. [0003] Kitchen vent or exhaust systems are commonly used to remove steam, odors, and other airborne vapors resulting from cooking on stoves. The exhaust systems often include grease filters to capture grease carried by the airborne vapors. For homes and smaller establishments, the most common is an up draft system utilizing a hood covering a portion or all of the stove burners to capture the rising air. The hood is attached to the wall, or in the case of a kitchen island, is suspended from the ceiling. Conventional vent hoods typically are cone shape...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F24C15/20
CPCF24C15/2057F24C15/20
Inventor CHENG, JASONTAM, KOK KI
Owner CHENG JASON
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