Cooling and/or heating device

Details Cooling and/or heating device Cooling and/or heating device

2005-04-05

2011-11-08

Ciric, Ljiljana (Department: 3785)

Heat exchange

With timer, programmer, time delay, or condition responsive...

Having heating and cooling capability

C165S219000, C165S260000

Reexamination Certificate

active

08051903

ABSTRACT:
A cooling and/or heating device (10, 60) for use in the cooling and/or heating of one or more units (8ato8c) includes a conduit network containing flow and return conduits (14, 16; 68, 70), with several circuits (12ato12c;32to38, 74to78) connected to the flow and return conduits (14, 16; 68, 70). Valves (28, 88, 96) are located in each circuit and used to regulate or control the volumetric flow through the circuits (12ato12c;32to38; 74to78). A heat transfer medium or coolant circulates through the conduit network, with at least one consuming device disposed in each circuit. Sensors (38) are provided in each circuit (12a-12c;32-38; 74-78), the sensors (38) sending signals to a control unit and forming part of a control circuit. The control unit adjusts the valves (28, 88, 96) of each circuit as a function of the signals transmitted from the sensors (38) so as to hydraulically balance the individual circuits.

REFERENCES:
patent: 2357706 (1944-09-01), Toepperwein
patent: 4084388 (1978-04-01), Nelson
patent: 4729424 (1988-03-01), Mizuno et al.
patent: 6499535 (2002-12-01), Cowans
patent: 4203613 (1993-08-01), None
patent: 4221725 (1994-01-01), None
patent: 19912588 (2000-09-01), None

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