HVAC systems and methods with improved heating element control
US10704805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2014 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Jan 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B5/01
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Systems, tools, and methods are presented that enable a circuit to introduce a random time delay before actuating a relay to start or stop a supply of electrical power to a heating element of a heating, ventilating, and air conditioning (HVAC) system. In one instance, the circuit includes a time-delay switch electrically connected to the relay. The time-delay switch has a random time delay before entering a closed state or open state. The relay is operable to start and stop a supply of electrical power to the heating element in response to the switch entering, respectively, the closed state and the open state. Other systems, tools and methods are presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.