Integrated air compressor

Abstract

The patent application discloses an air compressor. The air compressor comprises at least two separate cylinder housings, a pair of pistons, a motor, a pair of head members, and a distribution valve unit. Each cylinder housing may define a cylinder with an axis. The axes are parallel and spaced apart. The pair of pistons has each piston being reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder. The motor may be positioned between the cylinder housings and drives the pistons so as to reciprocate the pistons. The pair of head members has each head member being fastened to a different one of the cylinder housings. The distribution valve unit may be positioned in between and next to the cylinder housings.

We claim: 
     
         1 . An air compressor, comprising:
 at least two separate cylinder housings, each cylinder housing defining a cylinder with an axis, the axis being parallel and spaced apart;   a pair of pistons, each piston being reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder;   a motor positioned between the two axes of the corresponding cylinders and driving the pistons so as to reciprocate the pistons; and   a distribution valve unit positioned in between and next to the cylinder housings.   
     
     
         2 . The air compressor of  claim 1  further comprising an air drier connected to and positioned next to the distribution valve unit. 
     
     
         3 . The air compressor of  claim 1  further comprising an air input unit configured to introduce air into the cylinder. 
     
     
         4 . The air compressor of  claim 1 , further comprising an air output unit configured to move a compressed air out of the cylinder. 
     
     
         5 . The air compressor of  claim 1 , wherein the motor is configured to connect to and positioned to be next to the distribution valve unit. 
     
     
         6 . The air compressor of  claim 1  wherein the motor comprise a brushless motor. 
     
     
         7 . The air compressor of  claim 1  further comprising a crank shaft, a connecting rod, and a piston. 
     
     
         8 . The air compressor of  claim 7  wherein the piston is configured to connect to one end of the connecting rod. 
     
     
         9 . The air compressor of  claim 7 , wherein the motor further comprises a driving shaft, wherein the connecting rods connected to the driving shaft along both sides of an axis of the driving shaft. 
     
     
         10 . An air compressor, comprising:
 at least two separate cylinder housings, each cylinder housing defining a cylinder with an axis, the axes being parallel and spaced apart;   a pair of pistons, each piston being reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder; and   a motor having a driving shaft and positioned between the two axes of the corresponding cylinders and driving the pistons so as to reciprocate the pistons;   wherein the piston is connected to the driving shaft along both sides of an axis of the driving shaft.   
     
     
         11 . The air compressor of  claim 10  further comprising a distribution valve unit positioned in between and next to the cylinder housings. 
     
     
         12 . The air compressor of  claim 10  further comprising a pair of head members, each head member being fastened to a different one of the cylinder housings. 
     
     
         13 . The air compressor of  claim 10 , further comprising an air drier connected to and positioned next to the distribution unit. 
     
     
         14 . The air compressor of  claim 10  further comprising an air input unit configured to introduce air into the cylinder. 
     
     
         15 . The air compressor of  claim 10 , further comprising an air output unit configured to release a compressed air out of the cylinder. 
     
     
         16 . The air compressor of  claim 10 , wherein the motor comprise a brushless motor. 
     
     
         17 . The air compressor of  claim 11 , wherein the motor is configured to connect to and positioned to be next to the distribution valve unit. 
     
     
         18 . An air compressor, comprising:
 at least two separate cylinder housings, each cylinder housing defining a cylinder with an axis, the axes being parallel and spaced apart;   a pair of pistons, each piston being reciprocable in a corresponding one of the cylinders so as to reciprocate along the axis of the corresponding cylinder to vary a working volume of the cylinder; and   a distribution valve unit positioned in between and next to the cylinder housings.   
     
     
         19 . The air compressor of  claim 18 , further comprising a motor positioned between the two axes of the corresponding cylinders and driving the pistons so as to reciprocate the pistons. 
     
     
         20 . The air compressor of  claim 19 , wherein the motor is configured to connect to and positioned to be next to the distribution valve unit.