Defrost learning algorithm based on time of defrost state operation
US10591173B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/63
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Systems and methods are disclosed that include providing a heating, ventilation, and/or air conditioning (HVAC) system with a controller that may adjust the defrost procedure algorithm by monitor the refrigeration coil temperature sensor and the ambient outdoor temperature sensor, calculate an Actual Coil Delta Temperature (ACDT); compare the calculated ACDT to an Initiate Delta Temperature (DTINIT) associated with the measured ambient outdoor temperature; initiate a defrost procedure in response to the calculated ACDT being greater than or equal to the DTINIT; determine if the duration of the defrost procedure is within a predetermined time threshold; and adjust the duration of a next defrost procedure in response to determining that a predetermined number of consecutive defrost procedures have occurred outside of the predetermined time threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.