Single cylinder internally heated stirling engine

A single cylinder internally heated Stirling engine, comprising:

• a cylinder assembly, comprising a hot side cylinder and a cold side cylinder, wherein the hot side cylinder and the cold side cylinder are joined together to form a single closed cylinder, and a heat insulation ring is provided between the hot side cylinder and the cold side cylinder;
• a first heat exchanger, which is arranged inside the hot side cylinder and is in fluid communication with an external heat source, and used for heating a working gas in the hot side cylinder;
• a second heat exchanger, which is arranged inside the cold side cylinder and is in fluid communication with an external cold source, and used for cooling the working gas in the cold side cylinder;
• a piston, which is a single piston, the piston is arranged inside the cylinder assembly and is capable of reciprocating linearly inside the cylinder assembly, wherein the piston is provided with a gas-flow channel and a gas valve, the gas-flow channel is used for the working gas to transfer between the hot side cylinder and the cold side cylinder, and the gas valve is used to control the on/off of the gas-flow channel;
• and
• a piston rod, one end of which is connected to the piston and the other end is connected to a transmission mechanism located outside the cylinder assembly.