Alpha stirling engine

Abstract

An alpha type Stirling engine (1) comprises an expansion cylinder (2) and a compression cylinder (3). The Stirling engine further comprises a regenerator (4), a cooler (5), a heater (6), and a gas channel (7) which provides the expansion cylinder (2) in fluid communication with the compression cylinder (3). At least one of the expansion cylinder (2) and the compression cylinder (3) has a twin cylinder (2′, 3′) which functions as an additional expansion cylinder (2′) or an additional compression cylinder (3′), respectively, wherein the one of the expansion cylinder (2) and the compression cylinder (3) that has a twin cylinder (2′, 3′), is together with said twin cylinder (2′ 3′) connected to a first portion (7a) of the gas channel (7), from which first portion (7a) the gas channel (7) extends via the regenerator (4) to a second portion (7b) to which the other one of the expansion cylinder (2) and the compression cylinder (3) is connected.

Dependencies are inferred from the claim text.