Rear-side filtering and intake air compressor structure

Abstract

A rear-side filtering and intake air compressor structure includes an air compressor, which includes at least one drive motor. The drive motor is connected, at a bottom thereof, with a closure cover. An air inlet of the air compressor is arranged on the closure cover, and is connected with a filter assembly, so that the filter assembly is connected to the drive motor of the air compressor at an outside bottom position thereof. When the air compressor is activated, external air first moves through the filter assembly to get into the interior of the drive motor. The filter assembly that is externally arranged may filter off powdery dust and moisture contained in air to effectively prevent the powdery dust and moisture entraining air from getting into the air compressor to cause damage and corrosion, thereby effectively increasing the service life of the air compressor and adaptability to various environments.

I claim: 
     
         1 . A rear-side filtering and intake air compressor structure, comprising:
 at least two air compressors, one the air compressors comprising a motor of small power to provide a low-pressure output h, the other comprising a motor of large power to provide a high-pressure output;   the air compressor comprising at least one air inlet and at least one air outlet, the air compressor comprising at least one drive motor, the drive motor being connected, at a bottom thereof, with a closure cover, the air inlet being arranged on the closure cover, such that the air inlet is in communication with an interior of the drive motor, wherein the air inlet is connected to a first guide tube and connected to and in communication with a filter assembly, such that the filter assembly is connected, at an outside bottom position, to the drive motor of the air compressor;   wherein when the air compressor is activated, external air moves in sequence through the filter assembly and the first guide tube to get into the interior of the drive motor, and the air compressor discharges compressed air through the air outlet.   
     
     
         2 . The rear-side filtering and intake air compressor structure according to  claim 1 , wherein the filter assembly comprises a housing, a filter material, and a top cap, the housing defining, in an interior thereof, a filtering space in which the filter material is disposed, the housing being formed, in a periphery thereof corresponding to the filter material, with a plurality of ingress openings and at least one egress opening, the housing being combined, at a top portion thereof, with the top cap, so that the top cap hermetically closes and seals the filtering space, the first guide tube of the air compressor being connected to the egress opening, so that the air inlet of the air compressor and the filter assembly are connected and in communication with each other by the first guide tube. 
     
     
         3 . The rear-side filtering and intake air compressor structure according to  claim 1 , wherein the air compressor is further provided with at least one fan outside of the air inlet, and the fan is operable to blow external cold air toward a position of a cylinder block of the air compressor. 
     
     
         4 . The rear-side filtering and intake air compressor structure according to  claim 1 , wherein the air outlet is connected to a second guide tube and connected to and in communication with an exhaust valve, and an air accumulation tank is arranged between the second guide tube of the air compressor and the exhaust valve, the second guide tube being connected to a pre-set ingress terminal of the air accumulation tank, the exhaust valve being connected to a pre-set egress terminal of the air accumulation tank, so that compressed air discharged through the second guide tube of the air compressor is first accumulated in the air accumulation tank to allow the exhaust valve to subsequently exhaust the compressed air. 
     
     
         5 . The rear-side filtering and intake air compressor structure according to  claim 1 , wherein the air outlet is directly connected to and in communication with an exhaust valve, and an air accumulation tank is arranged between the air outlet of the air compressor and the exhaust valve, the air outlet being connected to a pre-set ingress terminal of the air accumulation tank, the exhaust valve being connected to a pre-set egress terminal of the air accumulation tank, so that compressed air discharged through the air outlet of the air compressor is first accumulated in the air accumulation tank to allow the exhaust valve to subsequently exhaust the compressed air. 
     
     
         6 . A rear-side filtering and intake air compressor structure, comprising:
 an air compressor, which comprises at least one air inlet and at least one air outlet, the air compressor comprising at least one drive motor, the drive motor being connected, at a bottom thereof, with a closure cover, the air inlet being arranged on the closure cover, such that the air inlet is in communication with an interior of the drive motor, wherein the air compressor is combined, at a rear end of the drive motor, with an external cover, the air inlet of the air compressor being connected to and in communication with a filter assembly, such that the filter assembly is arranged in an interior of the external cover and is connected, at a bottom position, to the drive motor;   wherein when the air compressor is activated, external air enters the interior of the external cover through a through hole formed in the external cover, and the external air moves through the filter assembly to get into the interior of the drive motor, and the air compressor discharges compressed air through the air outlet to implement an air charging operation.   
     
     
         7 . The rear-side filtering and intake air compressor structure according to  claim 6 , wherein the filter assembly comprises a housing, a filter material, and a top cap, the housing defining, in an interior thereof, a filtering space in which the filter material is disposed, the housing being formed with an ingress opening corresponding to a rear end of the filter material, the housing being combined with a top cap corresponding to a front end of the filter material, the housing being formed with an egress opening on the top cap and being provided with a connecting portion that is arranged, in a projecting manner, as being extended from the egress opening, the connecting portion being connected to and combined with the air inlet of the air compressor, so that the air inlet of the air compressor and the filter assembly are connected and in communication with each other. 
     
     
         8 . The rear-side filtering and intake air compressor structure according to  claim 6 , wherein the air compressor is further provided with at least one fan outside of the drive motor, and the fan is operable to blow external cold air toward a position of a cylinder block of the air compressor.