24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No. 1504/DEL/1998 A (22) Date of filing of Application: 02/06/1998
(54) Title of the invention: “AN IMPROVED TRANSVERSE FAN & HEAT
EXCHANGER ASSEMBLY”.
(51) International Classification 7 : F04029,
F04D 17/04
(30) Priority Data:
(31) Document No.: 08/880,763
(32) Date: 23/06/1997
(33) Name of convention country: USA
(66) Filed U/s 5(2): NIL
(61) Patent of addition to application No.: NA
(62) Filed on: NA
(63) Divisional to Application No.: NIL
(64) Filed on: NA
Total No Of Pages: 18
(57) Abstract:
(71) Name of the applicant:
CARRIER CORPORATION
Address of the Applicant:
Carrier Parkway, P.O Box 4800, Syracuse, New
York 13221, USA
(72) Name of the Inventor:
PETER RALPH BUSHNELL
A flow stabilizer is provided for reducing low frequency flow oscillations within and the resultant
noise from the impeller of a transverse fan. Such oscillations and noise can arise in installations
where the fan is located downstream of the heat exchanger in an air conditioning unit. The
stabilizer is a vane located between the downstream face of the heat exchanger and the suction side
of the impeller. The vane is positioned and oriented so as to reduce localized counter swirling
flow that otherwise would cause oscillating blade stall within the impeller and associated noise.
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