Rod seal device for Stirling engines

Patent · Tue Sep 22 00:00:00 EDT 1987

OSTI ID:6041643

Kobayashi, D; Itaba, T; Momose, Y

A rod seal device for a Stirling engine is described which consists of: a piston rod having a first end connected to an operating piston for the engine and a second end connected to a guide piston disposed in a crank case; a compression chamber defined by the operating piston and a cylinder of the engine and including a working gas for the engine; a first intermediate chamber surrounding an outer periphery of the piston rod and being connected to the compression chamber and kept to maintain a minimum level of pressure of the working gas; a high pressure oil chamber disposed next to the first intermediate chamber and surrounding the outer periphery of the piston rod. A first low pressure oil chamber disposed next to the high pressure oil chamber via an oil seal member and surrounding the outer periphery of the piston rod. A first scraper seal disposed next to the first low pressure oil chamber and surrounding the outer periphery of the piston rod; a second intermediate chamber disposed next to the first low pressure oil chamber via the first scraper seal and surrounding the outer periphery of the piston rod; a second scraper seal disposed next to the second intermediate chamber and surrounding the outer periphery of the piston rod; a second low pressure oil chamber disposed next to the second intermediate chamber via the second scraper seal and surrounding the outer periphery of the piston rod, a second oil pump disposed between the second low pressure oil chamber and the second low pressure oil reservoir to positively discharge any gas introduced into the second low pressure oil chamber to the atmosphere; and a further oil seal disposed between the second low pressure oil chamber and a working gas chamber in the crank use for a power take-off device.

• Assignee: Kabushiki Kaisha Riken, Tokyo and Aisin Seiki Kabushiki Kaisha, Aichi
• Patent Number(s): US 4694707
• OSTI ID: 6041643
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330201* -- External Combustion Engines-- Stirling Cycle
ATMOSPHERIC PRESSURE
COMPRESSION
CONTROL
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
MACHINE PARTS
OILS
OPERATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PISTONS
PRESSURE CONTROL
PUMPS
RELIEF VALVES
RODS
SEALS
SHAFTS
STIRLING CYCLE
STIRLING ENGINES
THERMODYNAMIC CYCLES
VALVES
WASTES
WORKING FLUIDS