Dual evaporator refrigeration unit and thermal energy storage unit therefore
US6067815A · kind A · utility
13Cited by
15References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Nov 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2400/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A low-cost and thermodynamically efficient implementation of a two-stage refrigeration system applied to a retail refrigerator. The invention includes a simple and easily manufactured thermally efficient and low-cost evaporation unit. The invention further includes a thermal energy storage module and an energy efficient control protocol to maintain steady temperatures in the fresh and frozen food sections, to permit energy efficient defrosting of the heat exchange surfaces in the freezer section, and minimize losses associated with condensing unit on-and-off cycling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.