Piston compressor and mobile refrigerator comprising same

Abstract

The present disclosure relates to a piston compressor, comprising a crankcase, at least two exhaust mufflers, a valve plate assembly, a cylinder head, a connecting pipe and an exhaust pipe. The cylinder head comprises a cylinder head high-pressure chamber, the crankcase comprises a crankcase exhaust passage, and the crankcase exhaust passage is connected to the cylinder head high-pressure chamber of the cylinder head through a one-way exhaust hole in the valve plate assembly. The crankcase and the valve plate assembly each comprise at least two exhaust holes respectively associated with the at least two exhaust mufflers, and the cylinder head high-pressure chamber of the cylinder head is connected to the at least two exhaust mufflers through the corresponding exhaust holes in the crankcase and the valve plate assembly. The connecting pipe connects the at least two exhaust mufflers, and the exhaust pipe is connected to any one of the at least two exhaust mufflers, thereby forming at least two gas discharge paths. In addition, the present disclosure further relates to a mobile refrigerator comprising the piston compressor.

1 . A piston compressor, comprising: a crankcase, at least two exhaust mufflers, a valve plate assembly, a cylinder head, a connecting pipe and an exhaust pipe, wherein the cylinder head comprises a cylinder head high-pressure chamber, the crankcase comprises a crankcase exhaust passage, and the crankcase exhaust passage is connected to the cylinder head high-pressure chamber of the cylinder head through a one-way exhaust hole in the valve plate assembly.
 characterized in that the crankcase and the valve plate assembly each comprise at least two exhaust holes respectively associated with the at least two exhaust mufflers, the cylinder head high-pressure chamber of the cylinder head is connected to the at least two exhaust mufflers through the corresponding exhaust holes in the crankcase and the valve plate assembly, the connecting pipe connects the at least two exhaust mufflers, and the exhaust pipe is connected to any one of the at least two exhaust mufflers, thereby forming at least two gas discharge paths.   
     
     
         2 . The piston compressor of  claim 1 , wherein the piston compressor is provided with two gas discharge paths for discharging gas entering the cylinder head high-pressure chamber, the two gas discharge paths comprising:
 a first gas discharge path. in which gas enters a first exhaust muffler of the at least two exhaust mufflers sequentially through a first exhaust hole in the valve plate assembly and a first exhaust hole in the crankcase, and then is discharged through the exhaust pipe, wherein the exhaust pipe is connected to the first exhaust muffler; and   a second gas discharge path, in which gas enters a second exhaust muffler of the at least two exhaust mufflers sequentially through a second exhaust hole in the valve plate assembly and a second exhaust hole in the crankcase, then enters the first exhaust muffler through the connecting pipe, and then is discharged through the exhaust pipe.   
     
     
         3 . The piston compressor of  claim 1 , wherein the piston compressor is provided with the two gas discharge paths for discharging gas entering the cylinder head high-pressure chamber, the two gas discharge paths comprising:
 a first gas discharge path. in which gas enters a first exhaust muffler of the at least two exhaust mufflers sequentially through a first exhaust hole in the valve plate assembly and a first exhaust hole in the crankcase, then enters a second exhaust muffler of the at least two exhaust mufflers through the connecting pipe, and then is discharged through the exhaust pipe, wherein the exhaust pipe is connected to the second exhaust muffler; and   a second gas discharge path. in which gas enters the second exhaust muffler sequentially through a second exhaust hole in the valve plate assembly and a second exhaust hole in the crankcase, and then is discharged through the exhaust pipe.   
     
     
         4 . The piston compressor of  claim 1 , wherein the one-way exhaust hole of the valve plate assembly is controlled by a one-way valve. 
     
     
         5 . The piston compressor of  claim 2 , wherein the first of said at least two mufflers and the second of said at least two mufflers are integrated with the crankcase, and are respectively located on two sides of the crankcase exhaust passage. 
     
     
         6 . The piston compressor of  claim 1 , said piston compressor is disposed in a mobile refrigerator. 
     
     
         7 . The piston compressor of  claim 6 , wherein the mobile refrigerator is a vehicle-mounted refrigerator.