35935results about "Space heating and ventilation details" patented technology

The present invention is related to the field of heating, ventilation and air conditioning (HVAC). More particularly, the present invention is related to methods and systems for controlled heating and cooling in order to reduce costs and the carbon footprint of said heating and cooling by optimizing the use of fresh air ventilation. The present invention is directed to mathematical algorithms incorporated into a controller and a method of determining control signals that are dependent on said mathematical algorithms and user programming that integrates information from multiple sensors, thermostats as well as weather information. Used in any home or building, the controller controls heating, cooling and ventilation systems in order to reduce costs and the carbon footprint of said heating and cooling by optimizing the use of fresh air ventilation. The controller works with typical HVAC systems generally in buildings and homes. The Smart-Stat algorithms are programmed into the controller and enable the controller to identify user-determined set-points alongside data from one or multiple internal temperature sensors. The user-determined set-points are also linked to time of day and day of week in a manner typical for typical thermostat devices available today. In such typical thermostat devices the controller will call for cooling or heating depending on the set points and conditions determined by the sensors in the building. The present invention is capable of interrupting the call for cooling or heating depending on whether the mathematical algorithms identify suitable outside weather conditions that permit the use of outside air cooling or outside air heating. Thus the call for heating or cooling can be redirected to call for ventilation instead of heating or cooling.

At least first and second thermostats may be operably coupled to one another and are capable of sharing their target temperatures and their temperature signals. The first thermostat may provide a thermostatic control signal to the air temperature control system. In some embodiments at least one thermostat further comprises a target-temperature-modifying occupant presence detector. Some embodiments further comprise first and second air movement control devices operably coupled to and controlled by the first and second thermostats, respectively. The operation of the stages of a multistage air temperature control system may be controlled.

An thermostat 10 includes an improved user interface, including automatic scheduling, remote control, system failure warning messages, and Energy Star compliance messages. Diagnostics can be provided without additional communication links to the thermostat. A sub-base accepts multiple thermostats and uses color coded terminals to ease installation. Glow-in-the-dark features reduce power needs. In one embodiment, thermostats are coupled to AC power sources and communicate using wireless communications to control an HVAC system. A dampered system can be effected through a thermostat that communicates directly with zoned dampers.

Remote control of energy consumption is realized using a readily installable, flexible approach. According to an example embodiment of the present invention, a remote source communicates with a wireless controller for executing energy usage control. The remote source sends signals to the wireless controller via a gateway located near or, in one implementation, forming part of the wireless controller. In response to the signals, the wireless controller sets control settings for operating one or more of a variety of equipment types, such as a furnace, air conditioner, water heater or heat pump. With this approach, wired connections from the gateway to energy-consuming equipment do not necessarily need to be made in order to effect remote energy-consumption control. For instance, when used in connection with a controller wired to the energy-consuming equipment, the gateway need only communicate wirelessly with the controller and does not necessarily need to be coupled to the energy-consuming equipment. In addition, access to the energy-consuming equipment for establishing remote energy control is not necessary; rather, the remote energy control can be effected by accessing user-friendly locations, such as those where thermostats and other controllers are typically located.

A hybrid manual/programmable thermostat for a furnace or air conditioner offers the simplicity of a manual thermostat while providing the convenience and versatility of a programmable one. Initially, the hybrid thermostat appears to function as an ordinary manual thermostat; however, it privately observes and learns a user's manual temperature setting habits and eventually programs itself accordingly. If users begin changing their preferred temperature settings due to seasonal changes or other reasons, the thermostat continues learning and will adapt to those changes as well. For ease of use, the thermostat does not require an onscreen menu as a user interface. In some embodiments, the thermostat can effectively program itself for temperature settings that are set to occur at particular times daily or just on weekends, yet the user is not required to enter the time of day or the day of the week.

Systems and methods for monitoring and controlling fluid consumption in a fluid-supply system are disclosed using one or more sensors for generating signals indicative of the operation thereof. In one embodiment, a method of preventing freezing of a conduit for fire suppression fluid in a fire sprinkler system includes sensing, with a temperature sensor, a temperature at a location; and if the sensed temperature falls below a predetermined threshold, sending, to at least one fluid control device interfaced with the conduit, at least one control signal to impede a flow of fire suppression fluid through the conduit.

A respiratory device is disclosed that optimizes delivery of oxygen and detection of carbon dioxide to a user through the use of a flexible lever arm and mouthpiece which may be adjusted to deliver the oxygen toward the user's oral and nasal cavities, and detect carbon dioxide, exhaled by the user, from a separate orifice of the mouthpiece. The lever is supported by a rotatable adapter attached to a head mounted brace. The adapter can rotate through 180° for placement of the lever on either side of the user's head. The adapter is hinged to eliminate occluding and kinking during rotation. A hose having tubular members therein delivers the gases to and from the user. The hose traverses through the lever arm and adapter, terminating at the lever arm into the mouthpiece. The mouthpiece has a plurality of ports for fluid flow. The hose terminates at the other end in gas detection and delivery equipment. The hose may be segmented or one continuous piece.

A thermostat that can display information in multiple different orientations is provided. The thermostat includes a housing, a display, and an input device. As the housing is mounted in a particular orientation, the thermostat changes the orientation of the information for properly displaying same to a user. This is accomplished by sensing the orientation of the housing in one embodiment, and through user selection of a desired orientation in another embodiment. A separate display and input device(s) are provided in one embodiment, and a combined touch screen display and input device is provided in another embodiment.

A thermostat is configured for automated compatibility with HVAC systems that are either single-HVAC-transformer systems or dual-HVAC-transformer systems. The compatibility is automated in that a manual jumper installation is not required for adaptation to either single-HVAC-transformer systems or dual-HVAC-transformer systems. The thermostat has a plurality of HVAC wire connectors including a first call relay wire connector, a first power return wire connector, a second call relay wire connector, and a second power return wire connector. The thermostat is configured such that if the first and second external wires have been inserted into the first and second power return wire connectors, respectively, then the first and second power return wire connectors are electrically isolated from each other. Otherwise, the first and second power return wire connectors are electrically shorted together.

A stable portable fan capable of generating an exhaust air stream elevated above a support surface allowing the exhaust air stream to be directed as desired by the user is provided. The device includes an air generator assembly located within a polygonal column generating an exhaust air stream that exiting the polygonal column. The polygonal column of the device is used to disguise/conceal the fan.

A low depth telescoping downdraft ventilator controlled by an electronic controller providing a precisely controlled and efficient way of removing gases and fumes is disclosed. The low depth telescoping downdraft ventilator has the ability to fit behind a built-in oven placed below a cook top unit. The telescoping downdraft ventilator has an almost infinitely selectable range of heights above a cook top with a built in oven. The ventilator collects and draws in exhaust fumes and smoke, filters it and re-circulates or expels it either outdoors or indoors. The inner member of the telescoping ventilator may house the exhaust fans and may move up or down without the use of mechanical switches for elevation detection and stopping. The ventilator may have sensors to detect temperatures, filter change need, fan speeds, telescoping stop points, energy consumption, resistance and voltage, enabling programmable set point operation.

A bladeless fan assembly for creating an air current includes a nozzle mounted on a base housing a device for creating an air flow. The nozzle includes an interior passage for receiving the air flow and a mouth for emitting the air flow. The nozzle defines, and extends about, an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth. The nozzle also includes a heater for heating the air flow upstream of the mouth.