Refrigerator/Fridge Cooling Fan Solutions

Suggested selection parameters for application cooling fans

Household air-cooled refrigerators adopt two types of fans:

Condenser cooling fan (for heat dissipation of condenser and compressor, located at the bottom rear)

Evaporator internal circulation fan (at the back of the freezer compartment, blows cold air)

Below are the mainstream specifications for condenser cooling fans.

Parameter	Mainstream Range for Household Refrigerators	Remarks
Dimension	92×92×25/32mm, 120×120×25/30mm; a small quantity of 80×80×20mm	92mm is the most common for household use; 120mm is mostly applied to large‑capacity, multi‑door refrigerators and commercial freezers. Delta Fans
Voltage	DC12V (vast majority), a few 24V	Inverter refrigerators mostly adopt 12V DC brushless fans with PWM speed control
Rotation Speed	1500～3400 RPM	Temperature‑controlled speed regulation; low speed for noise reduction under light load
Air Flow	0.8～1.6 m³/min (28～57 CFM)	92 series: typically 1.0~1.3 m³/min; 120 series: 1.2~1.8 m³/min
Static Pressure	3～8 mmH₂O	Low‑pressure axial fan, as the duct resistance is low. Delta Fans
Air Velocity	2.0～3.5 m/s (average at air outlet)	Not directly marked on fan nameplate; measured value in air duct
Noise	28～36 dB(A) @ rated speed; can be below 25 dB(A) at low speed	Low noise is prioritized for household appliances. Delta Fans
IP Rating	IPX1 / IP21 (mainstream)	Anti‑dripping and condensation water, not splash‑proof; IP44/IP54 available for commercial high‑humidity models. Delta Fans