Developed to address the growing demandfor
environmentally protected dc cooling fans, the Aquas IP58-rated fans
target applications with harsh environmental conditions. They withstand
water jets from any direction and exposure to salt spray, and can
prevent the harmful ingress of dust. “The Aquas line will extend the
life of electronic products beyond that of standard cooling fans, and
prevents premature failures caused by water and dust invasion,” says
Dennis Eisen, vice president of sales at Jaro Thermal (Boca Raton, FL,
To achieve IP58,
the line relies on a proprietary frame structure that isolates the
motor and uses weather-resistant bearings to prevent quick oxidizing
and rusting. A unique potting process encapsulates the printed circuit
board without overheating it, a challenge for the team during the
development stage, according to Eisen. The watertight enclosure allows
the immersion of the fan 1 meter below water without causing a failure.
Being impervious to water and coffee grinds,
the fans can be used to cool the electronics in commercial
coffeemakers. “The water and coffee grinds that users accidentally pour
down the sides can get into the fans, causing premature fan failures.
The water can short out the electronics on the printed circuit board,
while the coffee grinds can enter into the bearings. The Aquas fans
prevent both of these cases from occurring,” explains Eisen.
air-conditioning units can also benefit, as the technology helps
outdoor systems pass salt fog testing. Other applications include
boating appliances, wine coolers, indoor and outdoor icemakers, as well
as refrigeration equipment.
The fans come in
a variety of sizes, from 80 × 80 × 38 mm to 120 × 38 × 120 mm. It can
withstand an operating temperature of –10º to 70ºC, with a life
expectancy of 50,000 hours at 40ºC standard. The AQ series can be
fitted with a range of IP-protected connectors, extended lead lengths,
and threaded inserts.
In addition to the
positive and negative input leads, Eisen says, customers can have third
and fourth lead output options. The third lead options include
tachometer/frequency generator (FG), rotation detection alarm (RD),
pulse-width modulation (PWM) input, dual voltage control, and dual
speed control, while the fourth option will allow for a combination of
either the tachometer/FG output or RD and PWM input. As PWM input
varies the voltage to control the speed of the fan, or to bring the fan
to a complete halt, it is suited for applications that don’t require
the fans to run all the time. “If you have a device that is being
turned on while it is snowing out, you may not need the fan to run
until the device warms up and signals the fan to start rotating and
cooling the device,” explains Eisen.
compliant, the fans are designed in standard box fan sizes, with
voltages ranging from 5, 12, and 24 V dc to 48 V dc. “These would allow
engineers to quickly swap out non-IP-rated fans for Jaro’s Aquas fans
without any engineering work whatsoever,” Eisen tells APPLIANCE. In
addition to dc voltage fans, the firm also provides ac voltage fans in
the IP55–58 protection rating that are suited for refrigerator
An integrated motor controller drives low-power, single-coil, BLDC fans and motors.