Kryokühler

Details

Veröffentlichungs-Nr.

EP4807288

Anmeldetag

19. Januar 2026

Veröffentlichung

16. September 2026

Rechtsraum

EP

IPC

F25B1/06, F25B9/10, F25B9/14

Abstract

An object is to improve refrigeration performance of a cryocooler (10). A cryocooler (10) includes: a first displacer (18a) and a second displacer (18b) that extend in series in an axial direction; a cryocooler cylinder (16) that accommodates the first displacer (18a) and the second displacer (18b); and a connector (22) that connects the first displacer (18a) and the second displacer (18b) in the axial direction. A first expansion chamber (32) and a radial clearance (50) connected to the first expansion chamber (32) are formed between the cryocooler cylinder (16) and the first displacer (18a). The first displacer (18a) has an outlet flow path (36b) connected to the first expansion chamber (32) via the radial clearance (50), and a bypass flow path (52) that bypasses at least a part of the radial clearance (50) and is connected to the first expansion chamber (32). The connector (22) is configured to open the bypass flow path (52) during an intake process to the first expansion chamber (32) and close the bypass flow path (52) during an exhaust process from the first expansion chamber (32).

Anmelder

Firma

Sumitomo Heavy Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete