DynaMotors, Inc. - HVAC Systems

The DynaMotor™ Integrated Motor/Drive

HVAC Systems

DynaMotors has been awarded a grant by the U.S. Department of Energy to develop a version of the DynaMotor™ for use in residential HVAC systems.

Currently, HVAC systems use low cost, low efficiency, single speed PSC (Permanent Split Capacitor) induction motors. These motors are cycled on and off as required by a thermostat. A variable speed motor running continuously at a 1/2 speed uses 1/4 of the power to move the same amount of air. If variable speed motors replaced all 76 million PSC motors running in central HVAC systems in the U.S., a reduction in energy consumption of 46 Billion kWh
(483 x 10¹² BTU) annually would occur resulting in savings of $3.8 billion as well as emissions reduction of 23 million metric tons of C0₂.

Today, variable speed motors are used in only 5% of residential HVAC systems. The reason is cost. Existing technology variable speed motors cost at least 4 times as much as single speed motors. This is a price the HVAC industry and consumers have not been willing to pay.This project will result in the DynaMotor selling at 40-50% less than existing variable speed motors. Experts in the HVAC industry as well as DOE have concluded that at this price level, the variable speed motor will become the norm.

CLICK HERE to view the DoE “Fact Sheet” about the DynaMotor™

Specification Ð Direct Drive _HP Blower Motor

Applicable Standards:	Motor designed in accordance with NEMA MG-1 and Underwriters Laboratories® Standard for Safety No. UL 1004.
Application:	Direct Drive HVAC Blower Motor. Designed for continuous air-over applications such as furnace blowers or central air handling units having single shaft requirements.
Phase and voltage:	Single phase, 115 or 230 Vac nominal
Type:	Variable speed DynaMotor™, reversible
Rotation:	Reversible
Enclosure:	5.625 inch (nominal) diameter, open, air over construction
Mounting:	Round frame for use with “belly-band” bracket
Rated Horsepower:	_ hp at 1100 rpm
Supply frequency:	50/60 Hertz
Speed range:	Continuously variable from 400 rpm to 1800 rpm
Service factor and duty cycle:	Service factor 1.15 Duty cycle at maximum-rated speed and load and in a 40° C (104° F) ambient is continuous
Maximum ambient temperature:	40° C (104° F)
Maximum Winding Temperature rise:	60° C
Maximum Efficiency:	68 %
Noise level dBA @ 3 feet:	63dBa at 1100 rpm and full load

Construction:

Four-pole salient type stator, four-pole armature with four coils.
Maximum stator and armature lamination stack length is 2.55 inches.
Four-inch motor shaft extension
Thermal cut-off switch in stator
Armature electronics and power transistors mounted on armature shaft inside motor enclosure
Speed control electronics mounted to inside of end shield inside motor enclosure
Cold-rolled steel shell with ventilation openings
Die-cast end shields with ventilation openings
Permanently lubricated ball bearings
Approximate weight 18.5 Lbs.

CLICK HERE to view PDF of brochure about
the DynaMotor™ 48-Frame HVAC motor

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