Fan Blower and Compressor. Whats Difference?

Difference between Fan, Blower and Compressor. Fluid machines that move liquids are called pumps, but there are several other names for machines that move gases. A fan is a gas pump with relatively low pressure rise and high flow rate. A blower is a gas pump with relatively moderate to high pressure rise and moderate to high flow rate A compressor is a gas pump designed to deliver a very high pressure rise, typically at low to moderate flow rates.