Level control in an evaporator
US9915451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2013 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Dec 10, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F25/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heating, ventilation and air-conditioning (HVAC) a falling film evaporator in flow communication with a condenser. The falling film evaporator includes a separator to separate vapor from liquid refrigerant and a plurality of evaporator tubes through which a volume of thermal energy transfer medium is flowed. A distribution system is operably connected to the separator to distribute a flow of liquid refrigerant over the plurality of evaporator tubes. A primary feed conduit delivers a flow of refrigerant to the separator, and at least one secondary feed conduit is in flow communication with the primary feed conduit. At least one auxiliary valve is located at the secondary feed conduit to regulate flow into the separator from the primary feed conduit. At least one sensor senses a level of a refrigerant pool in the evaporator. The sensor is operably connected to the at least one auxiliary valve to control operation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.