Four-cylinder compressor

A four-cylinder compressor, comprising:

• a base;
• a motor body;
• a first cam mechanism;
• a second cam mechanism;
• a first cylinder group;
• a second cylinder group;
• a first support assembly;
• a second support assembly;
• a first cylinder connecting pipe;
• and
• a second cylinder connecting pipe;
• wherein the base is hollow, and is placed horizontally;
• the motor body is fixedly arranged in the base;
• the first cam mechanism and the second cam mechanism are respectively in transmission connection with output shafts at both ends of the motor body;
• the first cylinder group is arranged on a first side of the base, and the second cylinder group is arranged on a second side of the base opposite to the first side of the base;
• the first cylinder group is in transmission connection with the first cam mechanism;
• and the second cylinder group is in transmission connection with the second cam mechanism;
• and
• each of the first cylinder group and the second cylinder group comprises a first cylinder and a second cylinder;
• the first cylinder and the second cylinder are fixed on the base opposite to each other along a vertical direction;
• the first cylinder of the first cylinder group is communicated with the first cylinder of the second cylinder group;
• and the second cylinder of the first cylinder group is communicated with the second cylinder of the second cylinder group;
• the base comprises a motor housing, a first end housing and a second end housing;
• the first end housing is arranged at a first side of the motor housing, and the second end housing is arranged at a second side of the motor housing;
• the motor body is fixedly provided in the motor housing;
• the first cam mechanism is arranged in the first end housing, and the second cam mechanism is arranged in the second end housing;
• the first cylinder and the second cylinder of the first cylinder group are arranged opposite to each other at upper and lower sides of the first end housing, respectively;
• and the first cylinder and the second cylinder of the second cylinder group are arranged opposite to each other at upper and lower sides of the second end housing, respectively;
• each of the first cam mechanism and the second cam mechanism comprises a cam, a first connecting rod, a second connecting rod, a first piston and a second piston;
• the cam of the first cam mechanism and the cam of the second cam mechanism are respectively fixed on the output shafts of the motor body;
• the first connecting rod and the second connecting rod are sleeved on the cam;
• the first piston is provided on the first connecting rod;
• the second piston is provided on the second connecting rod;
• the first connecting rod and the second connecting rod are perpendicular to the output shafts;
• the second connecting rod is arranged near the motor body;
• the first piston is in transmission connection with the first cylinder;
• and the second piston is in transmission connection with the second cylinder;
• the first support assembly is arranged at a first side of the motor body, and the second support assembly is arranged at a second side of motor body;
• the first support assembly is located between the motor body and the first cam mechanism;
• and the second support assembly is located between the motor body and the second cam mechanism;
• each of the first support assembly and the second support assembly comprises a fixed plate and a support bearing;
• the fixed plate is fixed on the base;
• the support bearing is arranged on the fixed plate;
• and the support bearing is sleeved on the output shafts of the motor body;
• a first end cover is fixedly provided at a first end of the base, and a second end cover is fixedly provided at a second end of the base;
• the first end cover is provided with a first shaft sleeve, and the second end cover is provided with a second shaft sleeve;
• and the first shaft sleeve and the second shaft sleeve are coaxially fixed on the output shafts of the motor body, respectively;
• the first cylinder comprises a first cylinder liner, a first valve plate and a first cylinder cover, and the second cylinder comprises a second cylinder liner, a second valve plate and a second cylinder cover;
• the first cylinder liner and the second cylinder liner are arranged opposite to each other at the base along a vertical direction;
• the first piston is arranged in the first cylinder liner, and the second piston is arranged in the second cylinder liner;
• the first valve plate is arranged in the first cylinder liner, and the second valve plate is arranged in the second cylinder liner;
• the first cylinder cover is provided on the first valve plate, and the second cylinder cover is provided on the second valve plate;
• the first cylinder cover is provided with a first air cavity, and the second cylinder cover is provided with a second air cavity;
• a portion of the first valve plate located within the first air cavity is provided with a first cylinder air hole and a first gas delivery passage, and a portion of the second valve plate located within the second air cavity is provided with a second cylinder air hole and a second gas delivery passage;
• the first cylinder air hole is connected with an interior of the first cylinder liner and the first air cavity, and the second cylinder air hole is connected with an interior of the second cylinder liner and the second air cavity;
• one end of the first gas delivery passage is connected with the first air cavity, and the other end of the first gas delivery passage is connected with outside of the first valve plate;
• and one end of the second gas delivery passage is connected with the second air cavity, and the other end of the second gas delivery passage is connected with outside of the second valve plate;
• outer side walls of the first valve plate are respectively provided with a first air inlet and a first air outlet of the first gas delivery passage;
• outer side walls of the second valve plate are respectively provided with a second air inlet and a second air outlet of the second gas delivery passage;
• the first valve plate is provided with a first connection port at the first gas delivery passage, and the first connection port is located between the first air inlet and the first air outlet;
• and one end of the first cylinder connecting pipe is connected with the first connection port corresponding to the first cylinder group, and the other end of the first cylinder connecting pipe is connected with the first connection port corresponding to the second cylinder group;
• and
• the second valve plate is provided with a second connection port at the second gas delivery passage, and the second connection port is located between the second air inlet and the second air outlet;
• and one end of the second cylinder connecting pipe is connected with the second connection port corresponding to the first cylinder group, and the other end of the second cylinder connecting pipe is connected with the second connection port corresponding to the second cylinder group.