Low Power Consumption Fan âSan Ace 70â9GA Type
New Products Introduction
Low Power Consumption Fan “San Ace 70”9GA Type Kenta Nishimaki
Yoshinori Miyabara
You Muramatsu
1. Introduction In recent years, to accompany the spread of the Internet,
Kakuhiko Hata
Michinori Watanabe
a new size fan, the “San Ace 70” 9GA type, which is 70 mm sq. 38 mm thick and offers high static pressure as well as low power consumption.
information and communication devices such as servers and storages have had high-density mounting in order to respond to the increase in data volume and high speed processing. This has led to higher heat generation within such devices.
3. Product Features Fig. 1 shows a photograph of the “San Ace 70” 9GA type fan (hereinafter referred to as the “new model” ).
Moreover, conservation of the global environment is an important corporate activity and also the development of energy-saving devices is an issue across all industries. In order to respond to these demands, a fan with low power consumption and high cooling performance is required. This document introduces the features and performance of the low power consumption “San Ace 70” 9GA type fan that was developed to meet market needs.
2. Background of the Development To accompany advances towards high-density mounting
Fig. 1:“San Ace 70”9GA type The features of the new model are as follows:
of equipment, a demand has arisen for fans with even higher
(1) Low power consumption
cooling performance. Sanyo Denki has produced and sold
(2) High static pressure
60 mm sq. fans. However, improvement of the 60 mm sq. fan
(3) PWM control function
performance was difficult as it was not possible to secure enough space to install the electronic components necessary for increasing power to the fan’s drive circuit. Generally speaking, the bigger size fan generates higher cooling performance. The 80 mm sq. fan is the next size up
4. Product Overview 4.1 Dimensions Fig. 2 shows the dimensions of the new model.
from the 60 mm sq. fan in Sanyo Denki lineup and as it is 20 mm bigger both vertically and horizontally, sometimes it is unable to be installed in equipment with limited space. This created the demand for a fan that had higher performance than the 60 mm sq., was smaller in size than the 80 mm sq. Moreover, among a variety of cooling needs, producing a new size fan in our lineup would contribute to a higher
4.2 Characteristics 4.2.1 General characteristics Two types have been commercialized with a rated voltage of 12 V DC and rated speed 16,500 min-1 (G speed) and 12,000 min-1 (H speed). Table 1 shows the general characteristics for the new model.
degree of freedom in equipment design. According to this situation, Sanyo Denki has developed
SANYO DENKI Technical Report No.37 May 2014
6
38±0.5
70±0.5
（4）
+50 300 0
Lead wires UL1430 AWG24
SANYO DENKI
（10）
70±0.5
61.5±0.3
61.5±0.3
（4 ）
4-∅4.5±0.3
Airflow direction
Rotating direction
Fig. 2: Dimensions of the new model (unit: mm)
Table 1: General characteristics for the new model Model No.
Rated voltage [V]
Operating voltage [V]
PWM duty cycle [%]
Rated current [A]
Rated input [W]
Max. Operating Rated Max. airflow static pressure SPL temperature speed [dB(A)] [˚C] [min-1] [m3/min] [CFM] [Pa] [inchH2O]
100
2.60
31.20
16,500
2.65
93.6 860
3.45
65
0
0.16
1.92
4,400
0.70
24.7
61
0.24
30
100
1.10
13.20
12,000
1.92
67.8 455
1.83
57
0
0.07
0.84
2,500
0.40
14.1
0.08
19
9GA0712P1G001 12
10.8 to 13.2
9GA0712P1H001
20
Note 1: The expected life is a reference value when ambient temperature is 40˚C.
4.2.2 Airflow vs. static pressure characteristics
40,000/60˚C
（70,000/40˚C）
*Input PWM frequency: 25 kHz
（InchH2O）
4.0
Fi g. 3 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e 3.5
characteristics for the new model.
-20 to +70
Expected lifeNote 1) [h]
（Pa）
PWM duty 100%
1000
（InchH
900 800
model.
4.3 Expected life
2.5 2.0 1.5
The new model has an expected life of 40,000 hours at 60˚C (survival rate of 90% with continuous operation at the rated voltage under free air conditions and at normal humidity).
G speed 700
Static pressure
Fi g. 4 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e characteristics at individual PWM duty cycle of the new
Static pressure
4.2.3 PWM control function
3.0
600 H speed
500 400 300
1.0 200 0.5 0
100 0 0
0.5 20
1.0 40
2.0
1.5 60
2.5 80
3.0（m3/min） 100 （CFM）
Airflow
Fig. 3: Airflow vs. static pressure characteristics of the new model
7
SANYO DENKI Technical Report No.37 May 2014
m3/min）
Low Power Consumption Fan“ San Ace 70 ”9GA Type
（InchH2O）
4.0 3.5
（Pa）
12 V DC
1000
Fi g. 5 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e
900
Static pressure
2.5 2.0 1.5
characteristics for the conventional model and the new
PWM duty 100%
800 3.0
model. Essentially the 70 mm sq. fan has characteristics inbetween the 60 and 80 mm sq. fans, however exceeds the
700
performance of some models of the 80 mm sq. fan (9GV and
600
9GA types) in the high impedance area.
500
6. Application to 2U Unit
400
50%
6.1 Considerations regarding application to 2U unit
300 1.0 200 0.5
5.2 Comparison of airflow versus static pressure
0
CFM）
Regarding servers is used for data centers, etc., 1U or 2U
0%
100 0 0
0.5 20
units are used so that they can be stored in 19 inch racks. 1.0 40
1.5 60
3.0 （m3/min）
2.5
2.0 80
100 （CFM）
Airflow
Fig. 4: Airflow vs. static pressure characteristics against PWM duty cycle (9GA0712P1G001)
5. Comparison with the Conventional Model (60 mm sq., 80 mm sq. fan) 5.1 Key things for the development
In the 2U unit, it is common for six 60 mm sq. fans to be used in parallel. Fig. 6 shows installation of a 60 mm sq. and a 70 mm sq. fan in the 2U unit. In case of six 60 mm sq. fans, there is too much room on the top however five 70 mm sq. fans would effectively fill in the space in the 2U unit and reduce the number of fans.
6.1.1 Comparison of airflow versus static pressure Fi g. 7 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e characteristics for the conventional model and the new model.
We focused on higher static pressure than the 60 mm
Assuming use on the 2U unit, we compare five new
sq. fan and lower power consumption in order to make up
models and six conventional models (60 mm sq. fans), in
airflow versus static pressure characteristics between the 60
parallel.
and 80 mm sq. fans.
Compared with six of the conventional models (9GV0612P1G03) in parallel, five of the new models with
(1) Optimization of impeller/frame shape We achieved higher static pressure than the 60 mm sq. fan by optimizing the impeller shape, moving blade and static
the highest airflow (9GA0712P1G001) put in parallel had a maximum of 26% higher static pressure in the assumed operating area.
blade combination and frame shape.
6.1.2 Comparison of power consumption (2) Optimization of motor size
Compared with six of the conventional models
Compared to the 70 mm sq. fan, the motor for the existing
(9GV0612P1G03) in parallel, five of the new models
60 mm sq. fan does not have enough drive torque for the
(9GA0712P1G001) put in parallel achieved lower power
increase in impeller load. Meanwhile, the diameter of the
consumption from 9 to 18% in the assumed operating area.
motor for the 80 mm sq. fan is too big and it is not possible to secure sufficient ventilation area. As such, we selected the optimal motor size by considering the balance between fan size and ventilation area.
6.1.3 Comparison of SPL Fig. 8 shows a SPL comparison of the new model and conventional model. Compared with six of the conventional
Moreover, we achieved low power consumption by
models (9GV0612P1G03) in parallel, five of the new
optimizing the motor output against impeller load through
models (9GA0712P1G001) put in parallel achieved 2 dB
measures such as increasing the winding space factor of the
(A) reduction and a maximum of 4 dB (A) reduction in the
motor coil, etc.
assumed operating area.
SANYO DENKI Technical Report No.37 May 2014
8
（inch H2O）
（Pa）
1100 4.0
3.5
1000
60 mm sq. fan
900
70 mm sq. fan
800
80 mm sq. fan
Static pressure
3.0 700 2.5
2.0
1.5
9HV0812P1G001
600
9GA0712P1G001
500 400
9GV0812P1G03
300 1.0
9GA0812P1G61
200 0.5
9GV0612P1G03 100
9GA0612P1J03 0
0 0
0.5
1.0 25
1.5 50
2.5
2.0
3.0
75
4.0（m3/min）
3.5
100
（CFM）
125
Airflow
Fig. 5: Comparison of airflow vs. static pressure characteristics
60 60
(a) 60 mm sq. fan
70 70 15 15
85 85
2U rack 2U rack innerinner dimensions dimensions
15 15
4.5
1100
4.0
1000
3.5
70 70
400 2U rack inner dimensions 400 370dimensions 2U rack inner 370
2.5 2.0
1.0 0.5
Fig. 6: Installation on a 2U unit
Assumed operating area
0
240
Conventional model: Power consumption 9GV0612P1G03
220 200 -18%
-9%
900 800
3.0
1.5
(b) 70 mm sq. fan
PWM duty 100%
（Pa）
1200
Static pressure
60 60 25 25
85 85
2U rack 2U rack innerinner dimensions dimensions
7.5 7.5
（InchH2O）
180
New model: Power consumption 9GA0712P1G001
700
26% increase
600 500
160 140
120 New model 9GA0712P1G001 100
400
Power consumption
400 400 385dimensions 2U rack inner 385 2U rack inner dimensions
80 Conventional model 9GV0612P1G03
300 200
60 40 20
100 0 0
4
2 100
6 200
8
10
300
12 400
14
16（m3/min）
500
（CFM）
Airflow
Fig 7: Airflow vs. static pressure characteristics of the conventional and new models (Six 9GV0612P1G03 units or five 9GA0712P1G001 units in parallel)
9
SANYO DENKI Technical Report No.37 May 2014
Low Power Consumption Fan“ San Ace 70 ”9GA Type
At assumed operating range 76
75
75
74
2 dB(A) 73 72 71 70
SPL［dB（A）］at 1 m
SPL［dB（A）］at 1 m
At free air 76
74
Maximum 4 dB(A)
73
New model
9GV0612P1G03 9GA0712P1G001 （ （ 5 ） 6 units in parallel） units in parallel
70
Joined Sanyo Denki in 2012. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
Yoshinori Miyabara
72 71
Conventional model
Kenta Nishimaki
Conventional model
New model
9GV0612P1G03 9GA0712P1G001 （ （ 5 ） 6 units in parallel ） units in parallel
Fig. 8: Comparison of SPL
7. Conclusion This document introduced some of the features and performances of the newly developed low power consumption “San Ace 70” 9GA type fan. The new model is a 70 mm sq. fan that is suitable to
Joined Sanyo Denki in 2004. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
You Muramatsu Joined Sanyo Denki in 2002. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
Kakuhiko Hata Joined Sanyo Denki in 1997. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
2U units which has achieved higher static pressure and
Michinori Watanabe
low power consumption than the conventional 60 mm
Joined Sanyo Denki in 1989. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
sq. fan. Through this achievement, it is now possible to obtain a cooling performance supporting information and communication devices with increased heat generation due to high-density mounting. By enriching our lineup with the new 70 mm sq. size fan, Sanyo Denki has increased the options of fans to suit equipment space and expected to find new markets and applications.
SANYO DENKI Technical Report No.37 May 2014
10
Low Power Consumption Fan “San Ace 70”9GA Type Kenta Nishimaki
Yoshinori Miyabara
You Muramatsu
1. Introduction In recent years, to accompany the spread of the Internet,
Kakuhiko Hata
Michinori Watanabe
a new size fan, the “San Ace 70” 9GA type, which is 70 mm sq. 38 mm thick and offers high static pressure as well as low power consumption.
information and communication devices such as servers and storages have had high-density mounting in order to respond to the increase in data volume and high speed processing. This has led to higher heat generation within such devices.
3. Product Features Fig. 1 shows a photograph of the “San Ace 70” 9GA type fan (hereinafter referred to as the “new model” ).
Moreover, conservation of the global environment is an important corporate activity and also the development of energy-saving devices is an issue across all industries. In order to respond to these demands, a fan with low power consumption and high cooling performance is required. This document introduces the features and performance of the low power consumption “San Ace 70” 9GA type fan that was developed to meet market needs.
2. Background of the Development To accompany advances towards high-density mounting
Fig. 1:“San Ace 70”9GA type The features of the new model are as follows:
of equipment, a demand has arisen for fans with even higher
(1) Low power consumption
cooling performance. Sanyo Denki has produced and sold
(2) High static pressure
60 mm sq. fans. However, improvement of the 60 mm sq. fan
(3) PWM control function
performance was difficult as it was not possible to secure enough space to install the electronic components necessary for increasing power to the fan’s drive circuit. Generally speaking, the bigger size fan generates higher cooling performance. The 80 mm sq. fan is the next size up
4. Product Overview 4.1 Dimensions Fig. 2 shows the dimensions of the new model.
from the 60 mm sq. fan in Sanyo Denki lineup and as it is 20 mm bigger both vertically and horizontally, sometimes it is unable to be installed in equipment with limited space. This created the demand for a fan that had higher performance than the 60 mm sq., was smaller in size than the 80 mm sq. Moreover, among a variety of cooling needs, producing a new size fan in our lineup would contribute to a higher
4.2 Characteristics 4.2.1 General characteristics Two types have been commercialized with a rated voltage of 12 V DC and rated speed 16,500 min-1 (G speed) and 12,000 min-1 (H speed). Table 1 shows the general characteristics for the new model.
degree of freedom in equipment design. According to this situation, Sanyo Denki has developed
SANYO DENKI Technical Report No.37 May 2014
6
38±0.5
70±0.5
（4）
+50 300 0
Lead wires UL1430 AWG24
SANYO DENKI
（10）
70±0.5
61.5±0.3
61.5±0.3
（4 ）
4-∅4.5±0.3
Airflow direction
Rotating direction
Fig. 2: Dimensions of the new model (unit: mm)
Table 1: General characteristics for the new model Model No.
Rated voltage [V]
Operating voltage [V]
PWM duty cycle [%]
Rated current [A]
Rated input [W]
Max. Operating Rated Max. airflow static pressure SPL temperature speed [dB(A)] [˚C] [min-1] [m3/min] [CFM] [Pa] [inchH2O]
100
2.60
31.20
16,500
2.65
93.6 860
3.45
65
0
0.16
1.92
4,400
0.70
24.7
61
0.24
30
100
1.10
13.20
12,000
1.92
67.8 455
1.83
57
0
0.07
0.84
2,500
0.40
14.1
0.08
19
9GA0712P1G001 12
10.8 to 13.2
9GA0712P1H001
20
Note 1: The expected life is a reference value when ambient temperature is 40˚C.
4.2.2 Airflow vs. static pressure characteristics
40,000/60˚C
（70,000/40˚C）
*Input PWM frequency: 25 kHz
（InchH2O）
4.0
Fi g. 3 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e 3.5
characteristics for the new model.
-20 to +70
Expected lifeNote 1) [h]
（Pa）
PWM duty 100%
1000
（InchH
900 800
model.
4.3 Expected life
2.5 2.0 1.5
The new model has an expected life of 40,000 hours at 60˚C (survival rate of 90% with continuous operation at the rated voltage under free air conditions and at normal humidity).
G speed 700
Static pressure
Fi g. 4 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e characteristics at individual PWM duty cycle of the new
Static pressure
4.2.3 PWM control function
3.0
600 H speed
500 400 300
1.0 200 0.5 0
100 0 0
0.5 20
1.0 40
2.0
1.5 60
2.5 80
3.0（m3/min） 100 （CFM）
Airflow
Fig. 3: Airflow vs. static pressure characteristics of the new model
7
SANYO DENKI Technical Report No.37 May 2014
m3/min）
Low Power Consumption Fan“ San Ace 70 ”9GA Type
（InchH2O）
4.0 3.5
（Pa）
12 V DC
1000
Fi g. 5 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e
900
Static pressure
2.5 2.0 1.5
characteristics for the conventional model and the new
PWM duty 100%
800 3.0
model. Essentially the 70 mm sq. fan has characteristics inbetween the 60 and 80 mm sq. fans, however exceeds the
700
performance of some models of the 80 mm sq. fan (9GV and
600
9GA types) in the high impedance area.
500
6. Application to 2U Unit
400
50%
6.1 Considerations regarding application to 2U unit
300 1.0 200 0.5
5.2 Comparison of airflow versus static pressure
0
CFM）
Regarding servers is used for data centers, etc., 1U or 2U
0%
100 0 0
0.5 20
units are used so that they can be stored in 19 inch racks. 1.0 40
1.5 60
3.0 （m3/min）
2.5
2.0 80
100 （CFM）
Airflow
Fig. 4: Airflow vs. static pressure characteristics against PWM duty cycle (9GA0712P1G001)
5. Comparison with the Conventional Model (60 mm sq., 80 mm sq. fan) 5.1 Key things for the development
In the 2U unit, it is common for six 60 mm sq. fans to be used in parallel. Fig. 6 shows installation of a 60 mm sq. and a 70 mm sq. fan in the 2U unit. In case of six 60 mm sq. fans, there is too much room on the top however five 70 mm sq. fans would effectively fill in the space in the 2U unit and reduce the number of fans.
6.1.1 Comparison of airflow versus static pressure Fi g. 7 s h o w s t h e a i r f l o w v e r s u s s t a t i c p r e s s u r e characteristics for the conventional model and the new model.
We focused on higher static pressure than the 60 mm
Assuming use on the 2U unit, we compare five new
sq. fan and lower power consumption in order to make up
models and six conventional models (60 mm sq. fans), in
airflow versus static pressure characteristics between the 60
parallel.
and 80 mm sq. fans.
Compared with six of the conventional models (9GV0612P1G03) in parallel, five of the new models with
(1) Optimization of impeller/frame shape We achieved higher static pressure than the 60 mm sq. fan by optimizing the impeller shape, moving blade and static
the highest airflow (9GA0712P1G001) put in parallel had a maximum of 26% higher static pressure in the assumed operating area.
blade combination and frame shape.
6.1.2 Comparison of power consumption (2) Optimization of motor size
Compared with six of the conventional models
Compared to the 70 mm sq. fan, the motor for the existing
(9GV0612P1G03) in parallel, five of the new models
60 mm sq. fan does not have enough drive torque for the
(9GA0712P1G001) put in parallel achieved lower power
increase in impeller load. Meanwhile, the diameter of the
consumption from 9 to 18% in the assumed operating area.
motor for the 80 mm sq. fan is too big and it is not possible to secure sufficient ventilation area. As such, we selected the optimal motor size by considering the balance between fan size and ventilation area.
6.1.3 Comparison of SPL Fig. 8 shows a SPL comparison of the new model and conventional model. Compared with six of the conventional
Moreover, we achieved low power consumption by
models (9GV0612P1G03) in parallel, five of the new
optimizing the motor output against impeller load through
models (9GA0712P1G001) put in parallel achieved 2 dB
measures such as increasing the winding space factor of the
(A) reduction and a maximum of 4 dB (A) reduction in the
motor coil, etc.
assumed operating area.
SANYO DENKI Technical Report No.37 May 2014
8
（inch H2O）
（Pa）
1100 4.0
3.5
1000
60 mm sq. fan
900
70 mm sq. fan
800
80 mm sq. fan
Static pressure
3.0 700 2.5
2.0
1.5
9HV0812P1G001
600
9GA0712P1G001
500 400
9GV0812P1G03
300 1.0
9GA0812P1G61
200 0.5
9GV0612P1G03 100
9GA0612P1J03 0
0 0
0.5
1.0 25
1.5 50
2.5
2.0
3.0
75
4.0（m3/min）
3.5
100
（CFM）
125
Airflow
Fig. 5: Comparison of airflow vs. static pressure characteristics
60 60
(a) 60 mm sq. fan
70 70 15 15
85 85
2U rack 2U rack innerinner dimensions dimensions
15 15
4.5
1100
4.0
1000
3.5
70 70
400 2U rack inner dimensions 400 370dimensions 2U rack inner 370
2.5 2.0
1.0 0.5
Fig. 6: Installation on a 2U unit
Assumed operating area
0
240
Conventional model: Power consumption 9GV0612P1G03
220 200 -18%
-9%
900 800
3.0
1.5
(b) 70 mm sq. fan
PWM duty 100%
（Pa）
1200
Static pressure
60 60 25 25
85 85
2U rack 2U rack innerinner dimensions dimensions
7.5 7.5
（InchH2O）
180
New model: Power consumption 9GA0712P1G001
700
26% increase
600 500
160 140
120 New model 9GA0712P1G001 100
400
Power consumption
400 400 385dimensions 2U rack inner 385 2U rack inner dimensions
80 Conventional model 9GV0612P1G03
300 200
60 40 20
100 0 0
4
2 100
6 200
8
10
300
12 400
14
16（m3/min）
500
（CFM）
Airflow
Fig 7: Airflow vs. static pressure characteristics of the conventional and new models (Six 9GV0612P1G03 units or five 9GA0712P1G001 units in parallel)
9
SANYO DENKI Technical Report No.37 May 2014
Low Power Consumption Fan“ San Ace 70 ”9GA Type
At assumed operating range 76
75
75
74
2 dB(A) 73 72 71 70
SPL［dB（A）］at 1 m
SPL［dB（A）］at 1 m
At free air 76
74
Maximum 4 dB(A)
73
New model
9GV0612P1G03 9GA0712P1G001 （ （ 5 ） 6 units in parallel） units in parallel
70
Joined Sanyo Denki in 2012. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
Yoshinori Miyabara
72 71
Conventional model
Kenta Nishimaki
Conventional model
New model
9GV0612P1G03 9GA0712P1G001 （ （ 5 ） 6 units in parallel ） units in parallel
Fig. 8: Comparison of SPL
7. Conclusion This document introduced some of the features and performances of the newly developed low power consumption “San Ace 70” 9GA type fan. The new model is a 70 mm sq. fan that is suitable to
Joined Sanyo Denki in 2004. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
You Muramatsu Joined Sanyo Denki in 2002. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
Kakuhiko Hata Joined Sanyo Denki in 1997. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
2U units which has achieved higher static pressure and
Michinori Watanabe
low power consumption than the conventional 60 mm
Joined Sanyo Denki in 1989. Cooling Systems Division, Design Dept. Worked on the development and design of cooling fans.
sq. fan. Through this achievement, it is now possible to obtain a cooling performance supporting information and communication devices with increased heat generation due to high-density mounting. By enriching our lineup with the new 70 mm sq. size fan, Sanyo Denki has increased the options of fans to suit equipment space and expected to find new markets and applications.
SANYO DENKI Technical Report No.37 May 2014
10
