Class / Patent application number | Description | Number of patent applications / Date published |
165248000 | Flow of air from outdoors controlled (e.g., minimum outside air, etc.) | 25 |
20090308586 | COOLING SEMICONDUCTOR-BASED DEVICES ARRANGED IN A GREENHOUSE - Plant cultivation in a greenhouse ( | 12-17-2009 |
20130180700 | Whole House Ventilation System - A whole house ventilation control system is disclosed for a house HVAC system including a thermostat, supply and return air plenums and an HVAC fan. The thermostat selectively controls the HVAC system to maintain the desired temperature and resulting in a variable operating cycle period between successive on times. A fresh air intake duct is between an exterior intake vent and the return air plenum. A stale air exhaust duct is between the return air plenum and an exterior exhaust vent. The control system comprises a controllable intake damper in the fresh air intake duct and a controllable exhaust damper in the stale air exhaust duct. A controller is operatively connected to the house HVAC fan and the controllable dampers. The controller stores a desired fresh air exchange rate and is further adapted to predict an upcoming cycle period for a next successive operating cycle and calculating a fresh air vent timer responsive to the desired fresh air exchange rate and the predicted upcoming cycle period. The controller controls the dampers to open at least one of the dampers for the fresh air vent time during the next successive operating cycle. | 07-18-2013 |
20140182833 | Ventilation Controller - A ventilation system for a building in some cases includes a main HVAC blower for moving temperature-conditioned air through the building plus a smaller ventilation blower for providing fresh air. A controller regulates the ventilation blower's speed to provide a target ventilation flow rate regardless of changes in the pressure differential between the indoor and outdoor air. To ensure that the target rate is appropriate for a particular building, the target flow rate is determined based on a ventilation setting that reflects a specified number of bedrooms and a specified amount of floor space of the building. | 07-03-2014 |
20150041114 | Air Conditioning System With Reduced Power Ventilation Mode - An air conditioning system having a supply fan for supplying air to a supply duct; a fan motor for driving the supply fan; and a controller for controlling a speed of the fan motor, the controller operating the fan motor at a first speed in a first mode, a second speed lower than the first speed in a second mode and a third speed lower than the second speed in a ventilation mode. | 02-12-2015 |
20150107817 | SYSTEMS AND METHODS FOR VENTILATING A BUILDING - Systems and methods are disclosed for ventilating a building using a rooftop heating ventilating and air conditioning system that in one instance involve determining a first outdoor airflow into the system through a barometric relief damper; subtracting the first outdoor airflow from a minimum required outdoor airflow rate to arrive at second outdoor airflow; and setting an outdoor damper to provide an outdoor airflow through the outdoor damper that is greater than or substantially equal to the second outdoor airflow. Other systems and methods are disclosed. | 04-23-2015 |
20160001895 | CLIMATE CONTROL SYSTEM FOR AIRCRAFT - A climate control system ( | 01-07-2016 |
20160054016 | VENTILATION CONTROL DEVICE, VENTILATION SYSTEM, AND PROGRAM - A ventilation control device is a device for setting a ventilation path in an object space of wind flowing in/out through a plurality of openings between the object space and the outside of the building. The plurality of openings is disposed in a building. An air conditioner performs air-conditioning in the building. The ventilation control device includes: a ventilation-path setting unit; and an output unit. The ventilation-path setting unit sets the ventilation path so that a ventilation path in the object space, in a state in which the air conditioner operates, differs from a path of wind sent from the air conditioner. The output unit outputs path information indicating the ventilation path set by the ventilation-path setting unit. | 02-25-2016 |
20160106008 | Air Handling Unit and Method of Operating the Same - An air handling unit, particularly for data center cooling, operates to cool a flow of return air from a conditioned space using a flow of ambient air. The return air is recirculated to the conditioned space as supply air. The flow of ambient air can be adiabatically cooled to a lower temperature to provide additional cooling. A flow of makeup air can be joined with the cooled return air to form the supply air, and can be sourced from the ambient environment directly or from the heated flow of ambient air. | 04-14-2016 |
20160143182 | VENT CONTROL APPARATUS AND METHOD - A ventilation closure device for a telecommunication equipment enclosure includes opposed planar panels and aligned openings through each of the panels for passage of air therethrough for ventilating ambient atmospheric air to or from an equipment enclosure. One or more closures are disposed between the opposed panels and adapted to be drawn across the aligned openings for preventing passage of air, and a pivotal attachment to the closures disposes the closure into alignment with the opening. An actuator pivots the closures between an open position for allowing air passage through the openings and a closed position for impeding airflow. The pivotal attachment counterbalances the closures for mitigating force to pivot the closures. Counterbalancing of the closures minimizes actuation force required for drawing the closures across the openings. | 05-19-2016 |
20160176261 | AUTONOMOUS AIR CONDITIONING SYSTEM WITH CLEAN AIR OPTIMIZATION AND POLLUTION DETECTOR | 06-23-2016 |
20160201937 | AIR CONDITIONER APPARATUS | 07-14-2016 |
165249000 | Proportion of outdoor air and return air controlled | 13 |
20090008076 | Systems and Methods For Base Station Enclosures - A technique for climate control of, for example, base station circuitry within an enclosure involves placing base station circuitry within the enclosure and controlling the climate therein. A system according to this technique includes an enclosure suitable for use outside in a wide range of extreme weather conditions. A controller may, for example, control a fan tray with a heater to pull ambient air through a filtration unit, through the fan tray where the air is heated, and through cold start recirculation dampers. | 01-08-2009 |
20130068441 | DATA CENTER COOLING WITH AN AIR-SIDE ECONOMIZER AND LIQUID-COOLED ELECTRONICS RACK(S) - A cooling apparatus and method are provided for cooling an electronics rack. The cooling apparatus includes an air-cooled cooling station, which has a liquid-to-air heat exchanger and ducting for directing a cooling airflow across the heat exchanger. A cooling subsystem is associated with the electronics rack, and includes a liquid-cooled condenser facilitating immersion-cooling of electronic components of the electronics rack, a liquid-cooled structure providing conductive cooling to electronic components of the electronics rack, or an air-to-liquid heat exchanger associated with the rack and cooling airflow passing through the electronics rack. A coolant loop couples the cooling subsystem to the liquid-to-air heat exchanger. In operation, heat is transferred via circulating coolant from the electronics rack, and rejected in the liquid-to-air heat exchanger of the cooling station to the cooling airflow passing across the liquid-to-air heat exchanger. In one embodiment, the cooling airflow is outdoor air. | 03-21-2013 |
165250000 | Outdoor air used in lieu of operating heating or cooling means (e.g., economy cycle, etc.) | 11 |
20110253359 | SYSTEM AND METHOD FOR SENSING AIR FLOW, CARBON DIOXIDE OR VOLATILE ORGANIC COMPOUND IN RESIDENTIAL BUILDING - An apparatus and a method for controlling an HVAC system in a building are provided. The apparatus may include: (a) sensors provided at different locations inside and outside of the building each providing an electrical output signal representative of a measured condition, wherein the sensors sense two or more of the following conditions: temperature, carbon dioxide and volatile organic compound conditions; (b) an embedded computer receiving the electrical output signals of the sensors and based upon which provides a plurality of output control signals; and (c) HVAC actuators operating in accordance with the output control signals, wherein the HVAC actuators affect a climatic condition or an air quality condition at one or more locations where the sensors are located. | 10-20-2011 |
20130153196 | SYSTEM AND METHOD FOR OPERATING AN ECONOMIZER CYCLE OF AN AIR CONDITIONER - An air conditioning system for cooling an enclosure includes an air conditioner and a control system for triggering an economizer cycle of the air conditioner. The control system determines an electrical load of equipment in the enclosure, calculates a maximum acceptable outdoor temperature at which the economizer cycle may be operated based at least partially on the electrical load, receives data representative of an actual outdoor temperature, and initiates the economizer cycle if the actual outdoor temperature is equal to or below the maximum acceptable outdoor temperature. | 06-20-2013 |
20140216707 | Methods And Apparatus For Differential Energy Based Airside Economizer Changeover - Methods and apparatus for controlling an economizer in a ventilation system based upon moisture related properties of a first input air source and a second input air source to minimize energy for conditioning air in a structure. | 08-07-2014 |
20150027681 | HVAC CONTROLLER HAVING ECONOMY AND COMFORT OPERATING MODES - An HVAC controller may be programmed to control an HVAC system according to a comfort mode and an economy mode. When the HVAC system is operating according to the comfort mode, the HVAC system may primarily draw energy from a locally generated energy source or local energy storage system. The HVAC controller may be programmed to transition the HVAC system from operating according to the comfort mode to operating according to an economy mode, wherein the economy mode is a more energy efficient that the comfort mode | 01-29-2015 |
20150114614 | MIXED AIR TEMPERATURE SENSOR BYPASS - In an embodiment, a circuit for providing a mixed air temperature signal is provided. The circuit has a temperature input to an economizer controller, an air temperature sensor, a false air temperature device, and a switching device. The switching device has a switch and a switch actuating device. The switch connects the temperature input to the air temperature sensor when the switch is in a first state. The switch connects the temperature input to the false air temperature device when the switch is in a second state. The switch actuating device places the switch in the first state when a mechanical cooling signal is not sent. The switch actuating device places the switch in the second state when the mechanical cooling signal is sent. | 04-30-2015 |
20160123615 | ECONOMIZER HAVING DAMPER MODULATION - A system having a mixed air box with inputs of return air from a space or spaces of a building, and of outside air. The mixed air box may have an output of discharge air to the space or spaces of the building. The air from the output may be return air that is conditioned with cooling, heat, or outside air. A damper may be situated at the input of outside air to the mixed air box. A temperature sensor may be positioned at the input for outside air and at the output of discharge air. A cooling mechanism may be at the output of the discharge air. The temperature sensor may be downstream from the cooling mechanism. An economizer may have connections with the damper, the temperature sensor and the cooling mechanism. | 05-05-2016 |
20160174418 | PCM COOLING | 06-16-2016 |
20160178223 | Equipment Enclosure With Multi-Mode Temperature Control System | 06-23-2016 |
165251000 | Enthalpy sensor | 3 |
20140138076 | ENERGY RECOVERY VENTILATOR - An energy recovery ventilator control system is disclosed that is operable to be energized by electrical connection to a heating and cooling system including a thermidistat in fluid communication with each of an intake air duct and an exhaust air duct. The energy recovery ventilator control system is operable to regulate air temperature and humidity within a building using a temperate and humidity control scheme. | 05-22-2014 |
20140262196 | THERMOSTAT - Discussed generally herein are systems and methods for comfort level regulation in a building. A comfort level regulation system for a building can include a plurality of air intakes configured to draw air into the building, and a processor configured to open the one or more air intakes of the plurality of air intakes as a function of an orientation of the building, the location of the air intake relative to the orientation of the building, air temperatures inside and outside the building, and humidity inside and outside the building. | 09-18-2014 |
20160169544 | UNIT WITH RECOVERY WHEEL AND ECONOMIZER AND METHOD OF CONTROL | 06-16-2016 |
165252000 | Pre-heat or pre-cool of outdoor air before mixing with returned air | 1 |
20160131377 | AIR CONDITIONING DEVICE - An air conditioning device having an indoor heat exchanger, a heat recovery ventilator, a supply fan, and an exhaust fan inside a housing and configured to perform at least one of cooling/heating, heat recovery ventilation, and pure ventilation. The air conditioning device includes a first flow path configured to guide indoor air while the cooling/heating is performed, a second flow path configured to guide the indoor air toward the heat recovery ventilator, and a third flow path configured to guide outdoor air toward the heat recovery ventilator while the heat recovery ventilation is performed. The air conditioning device includes fourth and fifth flow paths configured to guide indoor air and outdoor air, respectively, and an inlet port that corresponds to the third flow path and the fifth flow path, and a discharge port that corresponds to outlets of the second flow path and the fourth flow path. | 05-12-2016 |