Refrigerant cooling assembly for centrifuges
US5477704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D31/006
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved configuration of refrigerant tubing and means for attaching the tubing to the centrifuge chamber. The tubing is preformed to provide a flat contact surface against the outside surface of the centrifuge chamber. The centrifuge tubing is tightly wound around the centrifuge chamber in a continuous fashion including a flat spiral at the base of the centrifuge chamber. For the section of the tubing in contact with the vertical cylindrical wall of the centrifuge chamber, the pressure for maintaining contact pressure between the flat surface of the tubing and the chamber wall is provided by the tension in the wrapping of the tubing. For the section of the tubing at the base of the centrifuge chamber, contact pressure may be provided by a clamping mechanism. To further enhance heat transfer between the refrigerant coils and the centrifuge chamber, a high heat conductive epoxy may be applied between the tubing and the centrifuge chamber surface. Due to the tight winding of the tubing and the flat contact surface between the refrigerant tubing and the chamber wall, there is optimum use of surface area for maximum and efficient heat transfer between the chamber and the tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.