System and method for injecting oil into an air conditioning circuit
US10378804B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 24, 2015 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Mar 7, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2345/007
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air conditioning service system includes an oil receptacle, a coupling port in fluid communication with the oil receptacle through an oil injection line, a solenoid valve configured to selectively allow the oil to flow from the oil receptacle into the oil injection line, a memory including program instructions stored therein, and a controller operably connected to the solenoid valve and the memory. The controller is configured to execute the program instructions to obtain at least one viscosity signal associated with a viscosity of the oil, obtain a volume signal indicative of an amount of oil to be charged, determine a time period based upon the obtained at least one viscosity signal and the obtained volume signal, control the solenoid valve to an open condition, and control the solenoid valve to a closed condition after the determined time period has passed since opening of the solenoid valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.