Fan Assemblies, Mechanical Draft Systems and Methods
AssigneeGreenvex
InventorSteen Hagensen
Life of this patent
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Abstract
Fan assemblies, mechanical draft systems and methods are provided. In this regard, a representative mechanical draft system for use with multiple appliances includes: a chimney operative to direct combustion products from multiple appliances; a chimney fan operative to draw combustion products from the chimney; and a controller operative to adjust an operating speed of the chimney fan such that, responsive to a change in pressure in the chimney, the controller adjusts the operating speed of the chimney fan to maintain a desired pressure in the chimney.
Claims26
A mechanical draft system comprising:
- a chimney operative to direct combustion products;
- a chimney fan operative to draw combustion products from the chimney;
- a first fireplace operative to provide combustion products to the chimney;
- a second fireplace operative to provide combustion products to the chimney;
- and
- a controller operative to adjust an operating speed of the chimney fan such that, responsive to a change in pressure in the chimney, the controller adjusts the operating speed of the chimney fan to maintain a desired pressure in the chimney.
A mechanical draft system for use with multiple appliances comprising:
- a chimney operative to direct combustion products from multiple appliances;
- a chimney fan operative to draw combustion products from the chimney;
- and
- a controller operative to adjust an operating speed of the chimney fan such that, responsive to a change in pressure in the chimney, the controller adjusts the operating speed of the chimney fan to maintain a desired pressure in the chimney.
A method for controlling multiple appliances comprising:
- providing multiple appliances, each of which is operative to facilitate independent, locally controlled ignition;
- venting combustion products of the multiple appliances using a single chimney;
- and
- controlling pressure in the chimney with a single chimney fan.
An exhaust fan assembly comprising:
- a housing defining a chamber and having opposing openings, the opposing openings having a centerline extending therebetween, a first of the openings being operative to intake a flow of gases, a second of the openings being operative to exhaust the flow of gases from the chamber;
- and
- a centrifugal fan having a motor and an impeller, the motor being mounted external to the housing, the impeller being positioned within the chamber, a rotational axis of the impeller being inclined with respect to the centerline extending between the openings of the housing.
Dependencies are inferred from the claim text.