Beta type stirling cycle device
US7043909B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Jul 11, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02G2270/42
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A coaxial Beta type Stirling cycle device, having a power piston and a displacer coaxially positioned in series within an enclosing cylinder. The power piston and power piston shaft have an opening wherein the displacer shaft passes through. A compression chamber is formed between the pistons. An expansion chamber is formed between the displacement piston and one end of the cylinder. There is a gas path provided, so that a working gas within the cylinder can pass back and forth between the expansion chamber and the compression chamber as the pistons reciprocate. The power piston and the displacer each has its own linkage to a common cam body, which has a cam groove for the power piston and a cam groove for the displacer. The cam body is a face cam having multiple cam grooves, or a barrel cam having multiple cam grooves. The cam grooves may be shaped to provide infinitely settable stroke, dwell, and phase angle. A plurality of single-cylinder devices can share a single common barrel cam and shaft, thus making a multi-cylinder “cluster” configuration engine. Each cylinder, combined with its pistons and yoke assemblies, is identical and easily replaceable, thus providing improved reli…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.