Inlet orifice of blower fan of fan coil unit
OwnerYu Wanginventor
Life of this patent
Estimating the term…
Abstract
A blower fan of a fan coil unit includes a fan wheel including a first end ring, a second end ring, and a plurality of blades that extend between the first end ring and the second end ring. The plurality of blades define a wheel inner diameter, and each of the first end ring and the second end ring define an end ring inner diameter. The blower fan also includes a housing including an inlet orifice having an orifice diameter. The fan wheel is located within the housing. The orifice diameter is substantially equal to the end ring inner diameter and greater than the wheel inner diameter.
Claims18
A blower fan of a fan coil unit, the blower fan comprising:
- a fan wheel including a first end ring, a second end ring, and a plurality of blades that extend between the first end ring and the second end ring, wherein the plurality of blades define a wheel inner diameter and each of the first end ring and the second end ring define an end ring inner diameter;
- and
- a housing including an inlet orifice having an orifice diameter, wherein the fan wheel is located within the housing and the orifice diameter is substantially equal to the end ring inner diameter and greater than the wheel inner diameter.
A fan coil unit comprising:
- a coil, wherein refrigerant flows through the coil;
- and
- a blower fan that draws air over the coil to exchange heat with the refrigerant flowing through the coil, wherein the blower fan includes a fan wheel including a first end ring, a second end ring, and a plurality of blades that extend between the first end ring and the second end ring, wherein the plurality of blades define a wheel inner diameter and each of the first end ring and the second end ring define an end ring inner diameter, and the blower fan includes a housing including an inlet orifice having an orifice diameter and an outlet, wherein the fan wheel is located within the housing to draw the air over the coil and into the inlet orifice and discharge the air through the outlet, and the orifice diameter is substantially equal to the end ring inner diameter and greater than the wheel inner diameter.
A refrigeration system comprising:
- a compressor for compressing a refrigerant;
- a condenser for cooling the refrigerant;
- an expansion device for expanding the refrigerant;
- and
- a fan coil unit including an evaporator coil and a blower fan, wherein the refrigerant flows through the evaporator coil and the blower fan draws air over the evaporator coil to reject heat to the refrigerant,
- wherein the blower fan includes a fan wheel including a first end ring, a second end ring, and a plurality of blades that extend between the first end ring and the second end ring, the plurality of blades define a wheel inner diameter and each of the first end ring and the second end ring define an end ring inner diameter, and the blower fan includes a housing including an inlet orifice having an orifice diameter and an outlet, and
- wherein the fan wheel is located within the housing to draw the air over the evaporator coil and into the inlet orifice and discharge the air through the outlet, and the orifice diameter is substantially equal to the end ring inner diameter and greater than the wheel inner diameter.
Dependencies are inferred from the claim text.