Christopher A Mann

Author:

Christopher Mann

ISBN #:

0312168039

Author:

Christopher Mann

ISBN #:

0595176453

US Patent:

62128949, Apr 10, 2001

Filed:

Mar 28, 1997

Appl. No.:

8/827301

Inventors:

Robert R. Brown - Markle IN
Christopher C. Mann - Ossian IN
R. Todd Zeplin - Uniondale IN

Assignee:

Waterfurnace International Inc.

International Classification:

F25B 3000

US Classification:

62180

Abstract:

A microprocessor based control system monitors and controls a heat pump water heater system and interfaces the water heating system with an external centralized control system. The microprocessor control system includes sensors, safety switches, device interface relays, user interface devices and precanned software to provide versatile monitoring and control over a heat pump type water heating system. The system generally involves a typical heat pump coupled with a domestic water heater, hot water retention tank or other body of water. The control system provides operational control over the heat pump to maintain the hot water stored in the domestic water heater in a predetermined setpoint and controls the use of electric resistance heating elements in the domestic water heater for added heating capacity for quick heat recovery type operation. The control system receives a centralized signal typically from a utility company to disable heat pump water heating operation during peak demand time periods. Control logic is provided to carry out effective liming parameter control, high evaporator temperature control, and defrost/anti-freeze protection control.

US Patent:

20210270501, Sep 2, 2021

Filed:

Feb 26, 2021

Appl. No.:

17/186779

Inventors:

- Fort Wayne IN, US
Christopher C. Mann - Ossian IN, US
Christopher D. Manz - Paulding OH, US
Brett Troy Ross - Chapin SC, US
Willem Lange - Springdale AR, US
Timothy C. Litton - Fort Wayne IN, US
Bruce R. Cole - Fort Wayne IN, US

International Classification:

F25B 30/06
F25B 41/20
F25B 41/385
F25B 41/39

Abstract:

A geothermal heat pump system which may be installed in a building and operated as an air source heat pump system using an exterior heat exchanger as a heat source or heat source/sink, but which includes geothermal components including a geothermal heat exchanger. The geothermal heat exchanger may be isolated in initial operation of the system for heating and cooling but may be connected to a geothermal heat source/sink following initial installation of the heat pump system for use in heating and cooling as a heat source and a heat source/sink, respectively. In this manner, the heat pump system may be initially operated as a standard air source heat pump and optionally later converted into a geothermal heat pump system.