Refrigeration system with a charging loop
US7849701B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2008 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Aug 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7313
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigeration system includes a primary loop that cools a secondary loop that circulates a coolant through a refrigeration load. The secondary loop includes a suction header to receive the coolant from the load, and a discharge header to direct the coolant to the heat exchanger, and a pump to pump the coolant from the suction to the discharge header. A charging loop maintains a pressure of the coolant in the supply header within a predetermined range, and includes an inlet from the discharge header and an outlet to the suction header. A flow nozzle and a valve are located between the inlet and the outlet, and a reservoir of make-up coolant communicates with the flow nozzle. Upon a low pressure condition in the suction header, the valve opens to permit flow of coolant through the flow nozzle to draw in make-up coolant from the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.