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| Number | Title | Issue Date |
| 8061417 | Priority conditioning in a multi-zone climate control system A method and mechanism for performing a prioritized determining of a climate conditioning to be provided to a zone in a multiple zone structure. In one embodiment of the invention, the determining of a climate conditioning to be provided to a zone is to be a priorit... | 11/22/2011 |
| 7730935 | Hydronic system control for heating and cooling A control system for controlling delivery of either heated or cooled water over a common water line to a plurality of heat exchangers. The control system includes a hydronic system controller which polls the heating or cooling demands of zone controllers controlling... | 06/08/2010 |
| 7265512 | Actuator with feedback for end stop positioning Methods for operating an actuator including providing a position sensor and using the position sensor to provide end-stop functionality for the actuator. The actuator may have a motor controlled by control circuitry, with the control circuitry reading a variable fro... | 09/04/2007 |
| 7189158 | Airflow control system A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to... | 03/13/2007 |
| 7185502 | Multi-type air conditioner and method for controlling operation of the same Air conditioner, and method for controlling an operation of the same, the air conditioner including a sheath heater in the accumulator for heating the refrigerant in room heating for delaying deposition of frost on the outdoor heat exchanger. The sheath heater inclu... | 03/06/2007 |
| 7174239 | Retrieving diagnostic information from an HVAC component A control is provided for controlling the operation of a climate control system, which includes a processor that is capable of receiving power from a low voltage power supply adapted to be connected to an external alternating current power source, or a second extern... | 02/06/2007 |
| 7168627 | Electronically-controlled register vent for zone heating and cooling An Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can also be used in connection with a conventional z... | 01/30/2007 |
| 7163156 | System and method for zone heating and cooling An Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can also be used in connection with a conventional z... | 01/16/2007 |
| 7156316 | Zone thermostat for zone heating and cooling A zone thermostat for use in connection with an Electronically-Controlled Register vent (ECRV) that can be easily installed by a homeowner or general handyman is disclosed. The ECRV can be used to convert a non-zoned HVAC system into a zoned system. The ECRV can als... | 01/02/2007 |
| 7133748 | Method and system for synchronizing climate control devices A method, computer program product, and a data processing system for controlling a first climate control device is provided. An operational mode is obtained for each of a plurality of climate control devices. The operational mode of each of the plurality of climate ... | 11/07/2006 |
| 7064511 | Autofan combination of zones A system and method for controlling a fan is disclosed. A single control signal value for controlling the fan, such as a single PWM duty cycle value for a corresponding PWM generator output powering the fan, may be calculated by combining sensor data from two or mor... | 06/20/2006 |
| 7063140 | Multiple climate air system The present invention 10 discloses a climate control system for a dwelling 12 comprised of main air conditioning unit 36 and a plurality of thermostats 14 and vents 16. Each of the thermostats 14 is positioned within a zone ... | 06/20/2006 |
| 6997390 | Retrofit HVAC zone climate control system A low cost and easy to install zone climate control system for retrofit to an existing forced air HVAC system, that provides independent minute-by-minute, day-by-day, and room-by-room climate control, including easy to use methods for specifying temperature schedule... | 02/14/2006 |
| 6957696 | Combination radiant and forced air climate control system A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling d... | 10/25/2005 |
| 6945324 | Controlling method for the discharge of coolant medium in the heat exchange wind box The invention relates to a controlling method of the discharge of coolant medium, and more particularly to a controlling method of the discharge of coolant medium in the heat exchange wind box. By mainly controlling the discharge of coolant medium in the heat exchan... | 09/20/2005 |
| 6725914 | Double duct changeover HVAC system The invention is a double duct changeover HVAC system, which uses two conditioned air sources to deliver air into two main duct systems. The two main duct systems are routed toward the exterior exposures of a building, and converge into a single duct which is routed... | 04/27/2004 |
| 6644398 | Advanced starting control for multiple zone system A system and method for controlling delivery of conditioned water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future demands for conditioned water by a plurality of zone controllers associ... | 11/11/2003 |
| 6591901 | Advanced starting control for heating/cooling systems A system and method for controlling delivery of either heated or cooled water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future heating or cooling demands of a plurality of zone controlle... | 07/15/2003 |
| 6575233 | Combination radiant and forced air climate control system A method utilizing a controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand si... | 06/10/2003 |
| 6491094 | Control for a heating ventilating and air conditioning unit A control system for a heating, ventilating, and air conditioning unit having a heating stage, a cooling stage, and an economizer is provided. The system includes a memory configured to store a first predetermined temperature range and a second predetermi... | 12/10/2002 |
| 6488081 | Method for controlling a heating ventilating and air conditioning unit A method for controlling a heating, ventilating, and air conditioning unit is provided. A conditioning unit having a heating stage, a cooling stage, a fan, and an economizer is operated to provide supply air to one or more zones. The temperature of air in... | 12/03/2002 |
| 6467537 | Advanced starting control for multiple zone system A system for controlling delivery of conditioned water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future demands for conditioned water by a plurality of zone controllers associated with t... | 10/22/2002 |
| 6453993 | Advanced starting control for multiple zone system A system for controlling delivery of either heated or cooled water to a plurality of heat exchangers includes a system controller which gathers information as to the current and future heating or cooling demands of a plurality of zone controllers associat... | 09/24/2002 |
| 6415617 | Model based economizer control of an air handling unit A strategy for controlling an air side economizer of an HVAC system uses a model of the airflow through the system to estimate the load in two modes when minimum and maximum amounts of outdoor air are being introduced into the building. Transitions betwee... | 07/09/2002 |
| 6298677 | Reversible heat pump system A control system for a reversible heat pump includes a system controller which polls the heating or cooling demands of zone controllers associated with a series of heat exchangers downstream of the heat pump. The system controller is operative to configur... | 10/09/2001 |
| 6175782 | System and method for adjusting climate control in vehicles In a multimedia information and control system for use in an automobile, at least one interface is employed which enables a user to access information concerning the automobile and control vehicle functions in an efficient manner. The user may select one ... | 01/16/2001 |
| 6145751 | Method and apparatus for determining a thermal setpoint in a HVAC system The present invention discloses methods for determining setpoint information in a HVAC system. Setpoint values are determined using occupant feedback provided by individual occupants over at least one of an Internet or Intranet communications network. Acc... | 11/14/2000 |
| 6131401 | Refrigerating system In a refrigerating/air-conditioning system for a supermarket, a single outdoor unit (60) is connected to a plurality of application units (11, 21, 31, 41, 51), which are connected in parallel to each other. The application units (11, 21, 31, 41, 51) are c... | 10/17/2000 |
| 6125640 | Method of controlling a system having multiple air conditioner units A method of controlling a system with multiple air conditioner units having an outdoor machine and a plurality of indoor machines, which detects different driving modes input to each indoor machine, compares an outdoor temperature with first and second pr... | 10/03/2000 |
| 6044652 | Multi-room type air-conditioner This invention aims to provide more comfortable air-conditioning and save energy by exerting capacity of an air-conditioning system responsive to requested capacities from plural rooms through the following process: first, establish a refrigerating cycle ... | 04/04/2000 |
| 6000232 | Refrigeration system and method of control A refrigeration system is disclosed in which temperature regulation and energy efficiency are improved. Each compartment to be cooled is provided with a variable speed fan, the speed of which is controlled dependent on that compartment's temperature, the ... | 12/14/1999 |
| 5927398 | Device identification system for HVAC communication network A system is disclosed for conveying network identifications of HVAC master controllers within an HVAC communication network to their respective zone controllers. Each master controller addresses and transmits its network identification to zone controllers... | 07/27/1999 |
| 5860473 | Multi-zone automatic changeover heating, cooling and ventilating control system A climate control system having a control means for receiving cool call signals and heat call signals from a plurality of thermostats. The control means blocking action by conflicting calls when the system is in a heat mode or cool mode. The system also p... | 01/19/1999 |
| 5829674 | Zone system control A device and method for controlling the conditioning of air in the zones of a forced air HVAC system. The device comprises thermostats located in at least two different zones, air ducts and dampers located therein to control the flow of air to the differe... | 11/03/1998 |
| 5810245 | Method and apparatus for controlling air flow in a structure Flow control valves (19) are provided and interfaced with the HVAC ducts (14) at the efferent ends (16) in adjoining rooms of a structure. A flow control command device (29), mounted on the wall of the structure (25), is provided to control the flow of ai... | 09/22/1998 |
| 5762265 | Air-conditioning control unit Complaint rate calculation means for calculating complaint rates in consideration of thermal feeling entered from vote value input means, a data storage unit for storing complaint rates together with indoor thermal conditions, updating means for calculati... | 06/09/1998 |
| 5743101 | Air-conditioner A multi-air-conditioner includes an exterior unit, interior units and remote-controllers. The exterior unit collects operation data of each of the interior units, determines an operation condition, and transmits the operation condition to each of the inte... | 04/28/1998 |
| 5729474 | Method of anticipating potential HVAC failure To anticipate potential failure of a temperature modification device (e.g., heating, ventilating and air conditioning equipment used in a commercial building), an efficiency value representing the ability of the temperature modification device to change t... | 03/17/1998 |
| 5622221 | Integrated zoning circulator with priority controller An integrated zoning circulator includes a priority controller, integral with the zoning circulator, for determining the priority given to the circulator in an individual zone of a multi-zone hydronic system. The zoning circulator also includes a priority... | 04/22/1997 |
| 5513796 | Dual control device of an air conditioner A control device of an air conditioner comprises a first controller which is installed in a room to be air-conditioned and which generates the signals for controlling an air conditioner. A second controller, which is installed in a different room from the... | 05/07/1996 |
