High and low temperature shutdown pneumatic thermostat and method

    公开(公告)号:US12092355B1

    公开(公告)日:2024-09-17

    申请号:US17816282

    申请日:2022-07-29

    申请人: Ty Freeman Davis

    发明人: Ty Freeman Davis

    IPC分类号: F24F11/76

    CPC分类号: F24F11/76

    摘要: A pneumatic thermostat and method, particularly suitable for oil and gas burner systems, which incorporates a dual seat valve with valve seats on each end, and a pair appropriately sized plugs, attached via a rod which is placed through the dual seat valve. This assembly is preferably coupled to a thermal expansion sleeve and internal rod, which move the assembly back and forth. With these mechanics and peripheral features, which can include for example high and low temperature venting and a bypass system, embodiments of the present invention can maintain a target temperature and shut-down pressure in the event that a temperature drops below an operating range.

    SYSTEM AND TERMINAL UNIT FOR CONDITIONING OF INDOOR AIR

    公开(公告)号:US20230221031A1

    公开(公告)日:2023-07-13

    申请号:US18095986

    申请日:2023-01-11

    IPC分类号: F24F11/76 F25B41/42 F24F11/83

    摘要: A system and terminal unit are provided for efficiently and effectively conditioning indoor air. Some embodiments address temperature control, humidity control, air quality control, while also introducing conditioned outdoor air. One aspect relates to a terminal unit that monitors and controls sensible and latent cooling rates to simultaneously meet temperature and humidity setpoints for the conditioned space. A sensor suite provides measurements for monitoring cooling rates and a control system controls actuators to meet the sensible and latent cooling requirements. The terminal unit may have a secondary recirculation air intake that bypasses the cooling coil to warm supply air prior to exiting the terminal unit. The terminal unit may be part of an air conditioning system where it is connected to a main branch of a hybrid branch controller which avoids having a home run to the HBC for each terminal unit.

    ENERGY SAVING CONTROLLER
    9.
    发明申请

    公开(公告)号:US20180038611A1

    公开(公告)日:2018-02-08

    申请号:US15787672

    申请日:2017-10-18

    申请人: James Leych Lau

    发明人: James Leych Lau

    摘要: An energy saving controller for an air handler having a heater and a dual speed fan adapted to switch between a first speed and a second higher speed via a gas furnace controller, the energy saving controller being configured to be mounted between a thermostat and the gas furnace controller, and having: input terminals configured to connect to corresponding thermostat output terminals and receive output signals; a microcontroller configured to: process the output signals into revised signals; and cause the gas furnace controller to alternate between the first speed and the second higher speed to mimic a behavior of a variable speed fan; drivers configured to receive the revised signals and use the revised signals to actuate mechanical relays; wherein the mechanical relays are configured to actuate the fan or the compressor via ESC output terminals; and means for causing the alternation.