US 12,352,223 B2
Alpha stirling engine
Martin Nilsson, Gothenburg (SE)
Assigned to EnergyIntel Services Ltd., Nicosia (CY)
Appl. No. 18/033,835
Filed by Energyintel Services Ltd., Nicosia (CY)
PCT Filed Oct. 20, 2021, PCT No. PCT/SE2021/051035
§ 371(c)(1), (2) Date Apr. 26, 2023,
PCT Pub. No. WO2022/093094, PCT Pub. Date May 5, 2022.
Claims priority of application No. 2051260-4 (SE), filed on Oct. 30, 2020.
Prior Publication US 2023/0407811 A1, Dec. 21, 2023
Int. Cl. F02G 1/044 (2006.01); F02B 75/18 (2006.01); F02G 1/057 (2006.01); F02B 75/22 (2006.01)
CPC F02G 1/044 (2013.01) [F02B 75/18 (2013.01); F02G 1/057 (2013.01); F02B 75/22 (2013.01); F02G 2244/08 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An alpha type Stirling engine comprising:
an expansion cylinder;
a compression cylinder;
a regenerator, a cooler, a heater, and a gas channel which provides the expansion cylinder in fluid communication with the compression cylinder;
wherein at least one of the expansion cylinder and the compression cylinder has a twin cylinder which functions as an additional expansion cylinder or an additional compression cylinder, respectively, and wherein the one of the expansion cylinder and the compression cylinder that has the twin cylinder, is together with the twin cylinder connected to a first portion of the gas channel, from which the first portion of the gas channel extends via the regenerator to a second portion to which the other one of the expansion cylinder and the compression cylinder is connected;
wherein the twin cylinder, the expansion cylinder and the compression cylinder each have a cylinder head having a surface proximal to the gas channel,
wherein the twin cylinder is arranged in line with at least one of the expansion cylinder and the compression cylinder, with the surface of the respective cylinder heads facing each other.