Micro high-pressure air compressor

Abstract

The present disclosure provides a micro high-pressure air compressor comprising a housing and an air compression mechanism and a drive mechanism mounted in the housing. The air compression mechanism is composed of a low-pressure cylinder, a high-pressure cylinder, a primary piston, a secondary piston, a piston rod and a pressure cylinder. The drive mechanism drives the piston rod to enable the primary piston and the secondary piston to perform piston movement in the annular piston chamber between the low-pressure cylinder and high-pressure cylinder and in the high-pressure cylinder respectively, so that the air is compressed in the annular piston chamber at the first stage, in the pressure cylinder at the second stage and in the high-pressure cylinder at the third stage. The present disclosure performs three-stage air compression, featuring large maximum working pressure, small size, light weight, low cost and portability.

1 . A micro high-pressure air compressor comprising a housing and an air compression mechanism and a drive mechanism mounted in the housing, characterized in that, the air compression mechanism includes a low-pressure cylinder, a high-pressure cylinder, a primary piston, a secondary piston, a piston rod and a pressure cylinder; the high-pressure cylinder is mounted in the low-pressure cylinder coaxially, and fixed on the first end of the low-pressure cylinder to form an annular piston chamber between the low-pressure cylinder and the high-pressure cylinder; the primary piston is mounted in the annular piston chamber to separate the annular piston chamber into a suction chamber and a compression chamber; the secondary piston is mounted in the high-pressure cylinder; the piston rod is penetrated into the low-pressure cylinder from the second end of the low-pressure cylinder; the piston rod includes a sleeve and an inner rod; the sleeve of the piston rod is covered on the high-pressure cylinder and connected to the primary piston; the inner rod of the piston rod is inserted into the high-pressure cylinder and connected to the secondary piston; the low-pressure cylinder is equipped with an air inlet of the suction chamber, an air inlet of the high-pressure cylinder and an air outlet of the high-pressure cylinder on the first end; the low-pressure cylinder is equipped with an air outlet of the compression chamber at the second end; the pressure cylinder is equipped with an air inlet and an air outlet; the air inlet of the pressure cylinder is connected with the air outlet of compression chamber and the air outlet of the pressure cylinder connected with the air inlet of the high-pressure cylinder through the gas tube; the air inlet of the suction chamber is equipped with a primary one-way valve; the primary piston is equipped with a secondary one-way valve connecting the suction chamber and compression chamber; a third one-way valve is mounted between the air outlet of the compression chamber and the air inlet of the pressure cylinder; a fourth one-way valve is mounted between the air outlet of pressure cylinder and the air inlet of high-pressure cylinder; the air outlet of the high-pressure cylinder is equipped with a fifth one-way valve; the drive mechanism drives the piston rod to enable the primary piston and the secondary piston to perform piston movement in the annular piston chamber and high-pressure cylinder respectively. 
     
     
         2 . The micro high-pressure air compressor according  claim 1 , characterized in that, the drive mechanism includes a drive motor, a swing arm and a sliding block; the output shaft of the motor is in drive connection with the input end of the swing arm; the sliding block is connected with the outer end of piston rod; the sliding block is designed with a swing groove and the output end of the swing arm is in slip connection with the swing groove on the sliding block. 
     
     
         3 . The micro high-pressure air compressor according to  claim 2 , characterized in that, the housing is equipped with a DC power socket and an AC power socket externally; the drive motor is DC gear motor; the DC power socket is in electric connection with the drive motor; the AC power socket is in electric connection with the drive motor through a power adapter. 
     
     
         4 . The micro high-pressure air compressor according to  claim 1 , characterized in that, an oil-water separator is mounted on the housing; the oil-water separator is connected to the air outlet of the pressure cylinder through a high-pressure condensing tube; the oil-water separator is equipped with an external air cock and a primary liquid draining valve vertically. 
     
     
         5 . The micro high-pressure air compressor according to  claim 4 , characterized in that, the high-pressure condensing tube is a threaded copper tube. 
     
     
         6 . The micro high-pressure air compressor according to  claim 4  further comprising a controller, characterized in that, the oil-water separator is equipped with an adjustable pressure gauge; the controller will stop the drive mechanism when the pressure reaches the set value of adjustable pressure gauge. 
     
     
         7 . The micro high-pressure air compressor according to  claim 6  further comprising an alarm, characterized in that, the low-pressure cylinder is mounted with a temperature sensor on the first end; the controller triggers the alarm to act when the temperature sensed by the temperature sensor is higher than or lower than the set value. 
     
     
         8 . The micro high-pressure air compressor according to  claim 4 , characterized in that, the oil-water separator is equipped with a high-pressure anti-explosion valve, and the pressure cylinder is equipped with a lower-pressure anti-explosion valve. 
     
     
         9 . The micro high-pressure air compressor according to  claim 1 , characterized in that, the pressure cylinder is equipped with a cotton filter internally; the compressed air flows into the pressure cylinder from the space below the cotton filter and is discharged from the pressure cylinder above the cotton filter; a secondary liquid draining valve is mounted at the bottom of the pressure cylinder. 
     
     
         10 . The micro high-pressure air compressor according to  claim 1 , characterized in that, the housing is mounted with a high-speed fan internally;
 the high-speed fan cools the air compression mechanism by blowing; the low-pressure cylinder is also equipped with a threaded structure at the periphery.