PRESSURE MEASUREMENT PORT STRUCTURE FOR BLOWER

摘要

A pressure measurement port structure for a blower. The blower comprises a volute (1), a wind turbine (2), a motor (3) and a pressure measurement port (4). A cavity (10) is arranged in the middle of the volute (1) and an air inlet (11) and an air outlet (12) which are in communication with the cavity (10) are provided. The motor (3) is mounted on the volute (1). An end of a rotary shaft (31) of the motor (3) extends into the cavity (10) and is connected to the wind turbine (2). The pressure measurement port (4) is mounted on the volute (1). A through hole (41) is arranged in the middle of the pressure measurement port (4). The through hole (41) is in communication with the cavity (10). The through hole (41) is comprised of a first channel (411) and a second channel (412). The first channel (411) is in communication with the second channel (412). The inner diameter (D1) of the first channel (411) is larger than the inner diameter (D2) of the second channel (412). Using the Bernoulli theorem and the Venturi effect, the pressure measurement value of the pressure measurement port is increased and the safety of entire machine is improved.