Quiet operating industrial dryer
AssigneeEllis Corporation
InventorDavid L. Briggs
Life of this patent
Estimating the term…
Abstract
An improved industrial dryer adapted for more efficient, quieter and safer operation. The dryer blower has a relatively large size blower wheel adapted for generating high volume air flows at substantially reduced noise levels so as not to disrupt the work environment nor necessitate that workers wear ear protection. The blower is mounted on a pivotal door of the housing for easy access and an adjacent air feed cone is mounted for selective adjustable positioning into axial relation with the blower wheel for efficient air distribution. The dryer includes a burner adapted for generating a multi-leg, relatively short length discharge flame for enhancing fuel combustion and maximizing surface area over which air passes and is heated as it is drawn to the tumbler of the dryer.
Claims22
A dryer comprising a tumbler having a rotatable basket for containing items to be dried;
- said tumbler having an air inlet and an air outlet;
- a burner having a duct communicating with said air inlet;
- a blower operable for drawing air through said burner for elevating the air temperature, for drawing heated air through said inlet and said tumbler for drying items contained in said tumbler, for drawing air through said air outlet, and for directing the air through an exhaust duct;
- said blower including a blower wheel and a motor for rotatably driving said blower wheel, and said blower wheel having a diameter of at least 27 inches and being operable at speeds no greater than about 1,300 RPM for drawing an air flow through said tumbler of at least 11,000 cfm at a noise level no greater than about 72 dB.
A dryer comprising a tumbler having a rotatable basket for containing items to be dried;
- said tumbler having an air inlet and an air outlet;
- a burner having a duct communicating with said air inlet;
- a blower operable for drawing air through said burner for elevating the air temperature, for drawing heated air through said inlet and said tumbler for drying items contained in said tumbler, for drawing air through said air outlet, and for directing the air through an exhaust duct;
- said blower including a blower wheel and a motor for rotatably driving said blower wheel;
- an inwardly tapered air feed cone for directing air from said air outlet axially to said blower wheel;
- a housing having a door upon which said blower wheel and motor are mounted;
- said pivotal door being mounted for pivotal movement between a closed position in which said blower wheel is axially adjacent an inwardly tapered end of said air feed cone and an open position for permitting access to said blower wheel;
- and said air feed cone being releasable and adjustably secured on said housing for selected positioning with respect to a rotary axis of said blower wheel.
Dependencies are inferred from the claim text.