OWB9250 series DC brushless air blower
1: Brushless DC Air Blower Features:
High speed, specialized high-speed ball bearing(NMB) offering long
service life and lower noise
High efficiency, much more efficient than brush motor blower
High reliability, specialized controller make the working more
reliable
High intelligent, PWM speed regulation, positive inversion, PG
signal feedback, intelligent controlling
2: Products Parameters
| Model | OWB9250-240 | OWB9250-220 |
| Rated Voltage | 24VDC | 24VDC |
| Rated current(open) | 6.5A | 5A |
| Air flow(open) | 42M3/H | 37M3/H |
| Motor Speed(open) | 24000 RPM | 22000RPM |
| | | |
| Rated current(closed) | 2.3A | 2.2A |
| Air pressure(closed) | 8kPa | 6.8kPa |
| Motor Speed(closed) | 28500 RPM | 26500RPM |
| | | |
| Motor pole | 4 | 4 |
| Phase Resistance | 0.62 Ohm | 0.66 Ohm |
| Noise | 80 dBA | 80 dBA |
| Ball Bearing | NMB High-speed ball bearing |
| Driving motor | 3 phase brushless DC motor |
| Hall sensor angle | 120° |
| RPM-Pulse | 1 Hz=30rpm |
| Winding type | Delta |
| Winding withstand Voltage | 500VDC (1 minute ) |
| Insulation Class | Class F |
| Blower weight | 400 g |
| IP grade | IP54 |
| Operation temperature | -20℃~ 50℃ |
| Service life (under 40℃) | 10000 hours |
3: Products performance
OWB9250 24V DC brushless blower commutating period
OWB9250 brushless DC blower Performance curves
4: Overall dimensions
5: Wiring diagram
| Pin 4 | Red | +5V |
| Pin 5 | Purple | Hall A |
| Pin 6 | Green | Hall B |
| Pin 7 | Grey | Hall C |
| Pin 8 | Black | GND |
| Pin 1 | Yellow | Motor phase A |
| Pin 2 | Blue | Motor phase B |
| Pin 3 | White | Motor phase C |
6: Attentions
1: Do not working under the max air pressure, the air flow is too
small at max air pressure, and it's not safe for using.
2: Add a filter attach to the intake makes the blower bearing
longer service life.
3: The correct rotation direction is CCW
4: Do not use the blower in High temperature ,high humidity, high
magnetic fields
5: Please use suitable power supply for the blower.
7: Brushless DC Air Blower Applications:
1: Buffer air cushion
2: Intelligent closestool
3: Electric-Drive phlegm-Sucker
4: Central ventilation system
5:Air purifier
6:Hand dryer
7: Air bubble machine
8: Ventilating device
9: Vacuum cleaner
10: breathing machine
11: air pump
12: Cooling equipment
Packing:
Shipment:
FAQ:
Can we connect this centrifugal air blower directly onto power
source?
This blower fan is with BLDC motor inside and it needs a controller
board to run.
What kind of power source shall we use to drive this blower fan?
Generally, our customers use 24vdc switching power supply or Li-on
battery.
Do you also sell controller board for this blower fan?
Yes, we can supply adapted controller board for this blower fan.
How to change impeller speed if we use your controller board?
You can use 0~5v or PWM to change speed. Our standard controller
board is also with a
potentiometer to change speed conveniently.
What is the MTTF of this centrifugal air blower?
MTTF of this centrifugal air blower is 20,000+ hours under 25 C
degree.
Can we use this centrifugal air blower to suct water?
This blower fan can not be used to suck water. If you need to suck
water, you can ask us to
choose proper item for this special working condition.
Can we use this centrifugal air blower to suck dust directly?
This blower fan can not be used to suck dust directly.If you need
to suck dust, you can ask
us to choose proper item for this special working condition.
What can do if the working condition is dirty?
A filter is strongly recommended to assemble onto the the inlet of
the blower fan
How to decrease the noise of the blower?
Many of our customers use foam, silicone to fill between blower fan
and machine to insulate
the blower noise.
