The uncontinuous volute profile (UVP) is widely used in the squirrel cage fan to meet the space limitation in the air conditioning system. However, it usually causes an obvious performance drop due to the unreasonable impeller–volute interaction. This paper employs two improved design methods, i.e., downsized volute profile (DVP) and partial flow volute profile (PVP), to enhance the aerodynamic performance of the fan installed in a limited space. Experimental results validate the positive effects of these two design methods on the aerodynamic performance. The results obtained by the flow simulation reveal that the pressure field inside the fan with the improved volute profiles is much more uniform than that with the UVP; thus, the improved volute profiles are beneficial for the increase of the fan pressure rise and the reduction of the flow loss. For the investigated fan, it is suggested that the design method of the DVP is more suitable for slight space limitation, while the design method of the PVP is more suitable for significant space limitation.

Issue Section:
Research Papers
Topics:
Design methodology, Flow (Dynamics), Impellers, Pressure, Blades

References

1.
Hillewaert
,
K.
, and
Van den Braembussche
,
R. A.
,
1999
, “
Numerical Simulation of Impeller-Volute Interaction in Centrifugal Compressors
,”
ASME J. Turbomach.
,
121
(
3
), pp.
603
–
608
.
Google Scholar
Crossref
Search ADS
 
2.
Steglich
,
T.
,
Kitzinger
,
J.
,
Seume
,
J. R.
,
Van den Braembussche
,
R. A.
, and
Prinsier
,
J.
,
2008
, “
Improved Diffuser/Volute Combinations for Centrifugal Compressors
,”
ASME J. Turbomach.
,
130
(
1
), p.
011014
.
Google Scholar
Crossref
Search ADS
 
3.
Gaetani
,
P.
,
Persico
,
G.
,
Mora
,
A.
,
Dossena
,
V.
, and
Osnaghi
,
C.
,
2012
, “
Impeller-Vaned Diffuser Interaction in a Centrifugal Compressor at Off Design Conditions
,”
ASME J. Turbomach.
,
134
(
6
), p.
061034
.
Google Scholar
Crossref
Search ADS
 
4.
Ziegler
,
K. U.
,
Gallus
,
H. E.
, and
Niehuis
,
R.
,
2003
, “
A Study on Impeller-Diffuser Interaction—Part I: Influence on the Performance
,”
ASME J. Turbomach.
,
125
(
1
), pp.
173
–
182
.
Google Scholar
Crossref
Search ADS
 
5.
Baun
,
D. O.
,
Köstner
,
L.
, and
Flack
,
R. D.
,
2000
, “
Effect of Relative Impeller-to-Volute Position on Hydraulic Efficiency and Static Radial Force Distribution in a Circular Volute Centrifugal Pump
,”
ASME J. Fluids Eng.
,
122
(
3
), pp.
598
–
605
.
Google Scholar
Crossref
Search ADS
 
6.
González
,
J.
,
Fernández
,
J.
,
Blanco
,
E.
, and
Santolaria
,
C.
,
2002
, “
Numerical Simulation of the Dynamic Effects Due to Impeller-Volute Interaction in a Centrifugal Pump
,”
ASME J. Fluids Eng.
,
124
(
2
), pp.
348
–
355
.
Google Scholar
Crossref
Search ADS
 
7.
Meakhail
,
T.
, and
Park
,
S. O.
,
2005
, “
A Study of Impeller-Diffuser-Volute Interaction in a Centrifugal Fan
,”
ASME J. Turbomach.
,
127
(
1
), pp.
84
–
90
.
Google Scholar
Crossref
Search ADS
 
8.
Fernández Oro
,
J. M.
,
Pereiras García
,
B.
,
González
,
J.
,
Argüelles Díaz
,
K. M.
, and
Velarde-Suárez
,
S.
,
2013
, “
Numerical Methodology for the Assessment of Relative and Absolute Deterministic Flow Structures in the Analysis of Impeller–Tongue Interactions for Centrifugal Fans
,”
Comput. Fluids
,
86
, pp.
310
–
325
.
Google Scholar
Crossref
Search ADS
 
9.
Qi
,
D. T.
,
Pomfret
,
M. J.
, and
Lam
,
K.
,
1996
, “
A New Approach to the Design of Fan Volute Profiles
,”
Proc. Inst. Mech. Eng., Part C
,
210
(
3
), pp.
287
–
294
.
Google Scholar
Crossref
Search ADS
 
10.
Akimoto
,
R.
,
Nakagawa
,
N.
,
Kawahara
,
T.
,
Kondo
,
F.
, and
Noyama
,
H.
,
1996
, “
Development of Compact Air Conditioning Unit for Vehicles
,”
Mitsubishi Heavy Ind. Tech. Rev.
,
33
(
3
), pp.
125
–
129
.http://www.mhi-global.com/company/technology/review/abstracte-33-3-125.html
11.
Wei
,
F. Q.
,
Li
,
Y. F.
, and
Ma
,
L. H.
,
2012
, “
Centrifugal Fan Volute in the Air Conditioner
,” China Patent CN 202520656 U.
12.
Zhang
,
W. J.
,
Xiong
,
J.
,
Yao
,
F.
, and
Liu
,
C.
,
2013
, “
Centrifugal Volute Installed in the Air Conditioner
,” China Patent CN 203627319 U.
13.
Son
,
P. N.
,
Kim
,
J.
, and
Ahn
,
E. Y.
,
2011
, “
Effects of Bell Mouth Geometries on the Flow Rate of Centrifugal Blowers
,”
J. Mech. Sci. Technol.
,
25
(
9
), pp.
2267
–
2276
.
Google Scholar
Crossref
Search ADS
 
14.
Baloni
,
B. D.
, and
Channiwala
,
S. A.
,
2012
, “
Design and Analysis of Volute Casing: A Review
,”
ASME
Paper No. GT2012-68056.
15.
Reunanen
,
A.
,
2001
, “
Experimental and Numerical Analysis of Different Volutes in a Centrifugal Compressor
,” Ph.D. thesis, Lappeenranta University of Technology, Lappeenranta, Finland.
16.
Kitadume
,
M.
,
Kawahashi
,
M.
,
Hirahara
,
H.
,
Uchida
,
T.
, and
Yanagawa
,
H.
,
2007
, “
Experimental Analysis of 3D Flow in Scroll Casing of Multi-Blade Fan for Air-Conditioner
,”
J. Fluid Sci. Technol.
,
2
(
2
), pp.
302
–
310
.
Google Scholar
Crossref
Search ADS
 
17.
International Standard Organization (ISO), 1997, “Fans for General Purpose, Part 1: Performance Testing Using Standardized Airways
,” British Standards Institution, London, Standard No. ISO 5801-1997.
18.
Wen
,
X.
,
Qi
,
D.
,
Mao
,
Y.
, and
Yang
,
X.
,
2013
, “
Experimental and Numerical Study on the Inlet Nozzle of a Small Squirrel-Cage Fan
,”
Proc. Inst. Mech. Eng., Part A
,
227
(
4
), pp.
450
–
463
.
Google Scholar
Crossref
Search ADS
 
19.
IEC, 1999, “Rotating Electric Machines, Part 1: Rating and Performance
,” International Electrotechnical Commission, Geneva, Switzerland, Standard No. IEC 60034-1.
20.
Fluent Inc.
,
2006
, fluent 6.3 User's Guide, Ansys Inc., Lebanon, NH.
21.
Japikse
,
D.
,
1996
, Centrifugal Compressor Design and Performance, Concepts ETI, White River Junction, VT.
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