Method and apparatus for converting a fixed-opening air diffuser

Details Method and apparatus for converting a fixed-opening air diffuser Method and apparatus for converting a fixed-opening air diffuser

1993-12-06

1994-11-22

Tapolcai, William E.

Automatic temperature and humidity regulation

Ventilator type

Mechanical linkage actuated

454258, F24F 1314

Patent

active

053661494

ABSTRACT:
An apparatus and method for converting a fixed-opening air diffuser (21) to an individually-controlled variable air volume diffuser. The fixed-opening diffuser (21) includes a diffuser housing (26) mounted to a support structure (25) and coupled to receive air from a supply conduit (24) positioned behind the support structure (25) and a diffusion assembly (27) mounted across the housing (26) to distribute the air from the housing (26). The method includes the steps of removing the diffusion assembly (27) from a position across the diffuser housing (26) to provide access to the housing, mounting a thermally-powered diffuser actuator assembly (31) having a movable vane (32) coupled to actuator assembly (31) inside the diffuser housing (26) in a position for control of air discharged from the diffuser housing (26) by thermally-driven displacement of the vane (32). Each of the steps of removing and mounting is accomplished while maintaining the diffuser housing (26) in place in the support structure (25) and while maintaining the support structure (25) in a substantially undisturbed state to minimize the release of dangerous materials possibly present in the support structure (25).

REFERENCES:
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patent: 4509678 (1985-04-01), Noll
patent: 4523713 (1985-01-01), Kline et al.
patent: 4697736 (1987-10-01), Kolt

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