Working Principle Of Screw Air Compressor - SATA AE5811 Manual Del Uso

II. Working principle of screw air compressor
The complete working cycle of the screw compressor can be divided into three phases, i.e., suction, compression and discharging. As
the rotor rotates, each pair of intermeshing teeth will complete the same duty cycle in sequence. For the sake of simplicity, we are only
studying the entire working process of a pair of teeth here.
a)Suction. If both rotors start to rotate, one end of a pair of teeth gradually disengages from each other to create an inter-teeth volume.
With the volume enlarged, a vacuum is created. The inter-teeth volume is only connected to the air inlet, so the air flows into volume under
the pressure difference. During subsequent rotation of the rotor, the male rotor tooth constantly disengages from the tooth space on the
female rotor, and the inter-teeth volume constantly enlarges and keeps being connected to the air inlet. With rotation of the rotor, the
inter-teeth volume will stop enlarging when it reaches the upper limit. In this case, the inter-teeth volume is disconnected from the air
inlet, thus the air is enclosed between the teeth and the suction has completed.
b)Compression. As the rotor rotates, the inter-teeth volume constantly decreases because the teeth of both rotors mesh with each other.
The volume occupied by the air enclosed in the inter-teeth volume also reduces, causing the compressor pressure to increase, thereby the
air is compressed.
c)Discharging. As the inter-teeth volume constantly decreases, the air with discharge pressure is continuously delivered to the air outlet,
which will last until the other end of the teeth fully mesh with each other. In this case, the compressed air in the inter-teeth volume is
completely discharged through the air outlet and the closed inter-teeth volume decreases to zero, and the discharging has completed.
Suction
Compression
AE5811/AE5812/AE5813
中文
EN DE RU KO PT
Compression
Discharging
JA ES
33