Zone control and smoke damping apparatus for central heating and

Details Zone control and smoke damping apparatus for central heating and Zone control and smoke damping apparatus for central heating and

1987-10-23

1989-07-18

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

Pneumatically actuated

165 22, F24F 1308

Patent

active

048486540

ABSTRACT:
An improved zone control apparatus having mode selectors which allow a user to select any one of a variety of operating modes for individual fluidically actuated flow control devices. The invention further provides for a smoke damper which upon automatic or manual activation causes all of the flow control devices to restrict flow of conditioned fluid through respective ducts or pipes so as to help minimize smoke contamination and the formation of a "chimney" effect. The invention further provides for the utilization of vibration type diaphragm pumps to create a source of pressure and vacuum, a pressure test device to quickly check the pressure in the apparatus, and a flow indicator for determining the location of leaks in the apparatus.

REFERENCES:
patent: 4189092 (1980-02-01), Maxson et al.
patent: 4301831 (1981-11-01), Lord
patent: 4463896 (1984-08-01), Schaus
patent: 4545524 (1985-10-01), Zelczer

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