Steven M Felber

US Patent:

6355091, Mar 12, 2002

Filed:

Mar 6, 2000

Appl. No.:

09/518924

Inventors:

Steven M. Felber - Eagan MN
Timothy J. Smith - Minneapolis MN
Brad A. Terlson - Maple Grove MN

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B01D 5306

US Classification:

95 10, 95 11, 95113, 95126, 96111, 96112, 96125, 96127, 96130, 96150, 96154

Abstract:

A ventilation and dehumidification system for ventilating fresh air to a conditioned space. The system is comprised of a unitary heat transfer desiccant wheel for dehumidifying incoming air by exchanging moisture from an inflow current of air with an outflow current of air. The unitary heat recovery wheel is able to transfer heat between the two air currents when the wheel is spun at a faster speed. The unitary heat transfer desiccant wheel is both regenerated and defrosted by a regenerative heater which is placed to heat the outflow current of air before the outflow current passes through the unitary heat transfer desiccant wheel. The unitary heat transfer desiccant wheel is spun at a slow speed to accomplish more dehumidification, and at a fast speed to accomplish more heat recovery. The system includes at least two blowers in order to motivate the inflow and outflow currents of air. The blowers can be arranged so as to create an air pressure differential between the inflow chamber and the outflow chamber so that any leakage of air between the two chambers will occur from the inflow chamber to the outflow chamber.

US Patent:

6364942, Apr 2, 2002

Filed:

Mar 6, 2000

Appl. No.:

09/519870

Inventors:

Steven M. Felber - Eagan MN
Timothy J. Kensok - Minnetonka MN
Timothy J. Smith - Minneapolis MN

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B01D 5304

US Classification:

96111, 96127, 96130

Abstract:

A dehumidification system for dehumidifying a conditioned space. The system is comprised of a motionless desiccant block for dehumidifying air within the conditioned space. The system is configured to operate in one of two modes. In a first dehumidifying mode the system draws air from the conditioned space, dehumidifies the air, and returns the air to the conditioned space. In a second regeneration mode the system draws air from outside the conditioned space, heats the air, passes the heated air through the desiccant to dry the desiccant, and expels the air back outside the conditioned space. The system is configured with pivoting dampers to select air source and air destination for the two modes of the system. The system includes blowers in order to motivate the flow of air and a regenerative heater for use during regeneration mode. By utilizing a motionless desiccant block the system avoids the expense and maintenance of desiccant wheels and wheel motors.

US Patent:

63280957, Dec 11, 2001

Filed:

Mar 6, 2000

Appl. No.:

9/518923

Inventors:

Steven M. Felber - Eagan MN
Timothy J. Kensok - Minnetonka MN
Ron S. Ragland - Minneapolis MN
Leisha J. Rotering - Minneapolis MN
Timothy J. Smith - Minneapolis MN
Russell A. Straate - Plymouth MN
Brad A. Terlson - Maple Grove MN

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F25B 2900
F24H 302

US Classification:

165 54

Abstract:

A ventilation system for ventilating fresh air to a conditioned space, the system capable of supplying substantially more air to the space than is removed by the system in order to prevent depressurization inside the space. Passing through the unit housing is an inflow chamber, an outflow chamber, and a make-up air duct. Two blowers, an intake blower and an exhaust blower, are placed within the inflow chamber and the outflow chamber in order to motivate inflow and outflow currents of air. A damper acts to open and close the make-up air duct. When the damper is in an open position and the intake blower operates at a higher speed than the exhaust blower the system increases the air pressure within the conditioned space. A heat transfer wheel is disposed within both the inflow chamber and the outflow chamber to exchange heat between the two currents of air. A pre-heater is placed in the make-up air duct to be used in cold weather conditions to heat the air which bypasses the heat recovery wheel.