| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 165222000 | Humidity control | 23 |
| 20110042055 | Two-channel Air Conditioner for the Flexible Climate Control of a Number of Rooms - The invention relates to a two-channel air-conditioner ( | 02-24-2011 |
| 20110232891 | Linear reset providing adaptive response and control action reversal of PID loops - An HVAC system for controlling the temperature and humidity of air supplied to a comfort zone includes a heater and a cooler operating concurrently. In response to a supply air temperature sensor, a PID control loop with substantially constant gain controls the cooler to maintain the zone air at a certain comfortable temperature. The heater, also under PID control, is controlled in response to a humidistat. To prevent the heater from overloading the cooler during periods of high cooling demand, a variable gain multiplier decreases the heater's gain when the cooler's output exceeds a predetermined limit; otherwise, the heater's gain remains substantially constant. When the cooler is operating above the predetermined limit, the multiplier varies linearly between positive-one and negative-one and does so inverse-proportionally with the cooling load to smoothly change the heater's PID control from direct acting to reverse acting as the cooler approaches its maximum capacity. | 09-29-2011 |
| 20120152513 | HUMIDIFIER - A humidifier is provided and includes a membrane, which is permeable to water of a condensate supply but impermeable to acid of the condensate supply and a housing system to urge airflow across the membrane to humidify air with the water of the condensate supply. | 06-21-2012 |
| 20140116673 | AIR CONDITIONER FOR AN ELECTRIC VEHICLE - An air conditioner for an electric vehicle is provided, which may minimize both use of a battery and use of an engine to heat an interior space of the electric vehicle, thereby increasing mileage. | 05-01-2014 |
| 20140174709 | ENGINE INLET AIR COOLING SYSTEM AND METHOD - A method of cooling inlet air to an engine includes pressurizing the inlet air during a first compression stage, and further pressurizing the inlet air during a second compression stage. Heat is transferred from the inlet air to a primary coolant liquid between the first compression stage and the second compression stage, and heat is transferred selectively, variably, or selectively and variably from the primary coolant liquid to a fuel of the engine. | 06-26-2014 |
| 20140196880 | APPARATUS AND METHOD FOR CONTROLLING A GREENHOUSE ENVIRONMENT - Apparatus for controlling an environment in a green-house, the apparatus comprising: first and second heat exchangers, each comprising a radiator and a fan system for driving air through the radiator; a first refrigerant circulation system that circulates a refrigerant fluid between and through the radiators; a heater controllable to heat the refrigerant; a controller that controls the apparatus to operate selectively in a maintenance mode or a flush mode, wherein in the maintenance mode the heater heats the refrigerant and the first and second fan systems drive air from outside to inside the greenhouse and through the radiators to acquire heat from the refrigerant, and in the flush mode the first fan system vents air from inside to outside the greenhouse through its respective radiator to deposit heat in the refrigerant and the second fan system drives air from outside to inside the greenhouse and through its respective radiator to acquire the heat deposited in the refrigerant. | 07-17-2014 |
| 20140374082 | CUSTOM DISPLAY STORAGE UNIT - An illustrative system including a hermetically sealable housing having a hermetically sealable satellite display unit and a drawer. The satellite display unit is configured for reversible engagement with the housing via a satellite receptacle and includes UV light reducing display unit walls and a means for becoming hermetically sealed. The drawer is configured for reversible engagement within a drawer receptacle of the housing and at least partially seals the housing when engaged with the receptacle. The housing further includes a desiccant unit in sealed communication with the satellite display unit and the drawer, thereby enabling alteration of climates therein. | 12-25-2014 |
| 20150027680 | HUMIDITY CONTROLLER - An on-off valve and a bypass pipe which bypasses the on-off valve are connected to an inlet pipe and an outlet pipe of a humidity control circuit. A pressure-reducing valve is connected to the bypass pipe. Before switching a four-way valve, a degree of opening of the pressure-reducing valve is reduced to reduce a pressure difference between high and low pressure in the humidity control circuit. After that, the on-off valve is closed for pressure equalization between the high and low pressure in the humidity control circuit. | 01-29-2015 |
| 20150068720 | Method and Apparatus for an Infant-milk Warmer - A method and system for controlling the storage and preparation of a container of milk for feeding is disclosed. The system employs collected information associated with the infant or the caregiver to initiate controls of the temperature of the milk without the user's interaction. | 03-12-2015 |
| 20150327447 | APPARATUS AND METHOD FOR CONTROLLING A GREENHOUSE ENVIRONMENT - A method of controlling an environment in a greenhouse, the method comprising: periodically venting air from inside to outside the greenhouse during first periods while drawing air from outside to inside the greenhouse and heating drawn in air with heat extracted from the vented air; during second periods between the first periods, drawing in air from outside to inside the greenhouse and heating the air as it is drawn in; and initiating first periods when the relative humidity becomes greater than a predetermined relative humidity. | 11-19-2015 |
| 165223000 | Humidity sensor measures humidity of air in conditioned space | 9 |
| 20100307731 | AIR-CONDITIONING CONTROL SYSTEM - An air-conditioning control system ( | 12-09-2010 |
| 20140216706 | HUMIDITY CONTROL SENSOR FOR A REFRIGERATOR - An improved humidity control sensor is provided that cost effectively allows for a more efficient operation of a refrigerator by using two temperature sensors to determine ambient conditions of a room housing the refrigerator. Based on the two temperature sensor measurements, the humidity control sensor may e.g., use a processing device to efficiently control a heating element in thermal communication with an exterior surface of the refrigerator's cabinet to prevent condensation from forming on that exterior surface. | 08-07-2014 |
| 165224000 | Additional humidity sensor (e.g., located outside of conditioned space, etc.) | 1 |
| 20130299157 | AIR-CONDITIONING SYSTEM AND AIR-CONDITIONING METHOD FOR SERVER ROOM MANAGEMENT - A system for a server room management includes an air-conditioning control device including: an acquisition unit; a setting unit that sets content for generating supply air at temperature, absolute humidity, and relative humidity within target range, based on outside air temperature and humidity as well as return air temperature; and a controller controlling amount of outside air, amount of return air, control amount of humidifier, control amount of cooler, and amount of air blown by blower, based on the content. If the outside air is within range greater than absolute humidity upper limit, or within range greater than enthalpy upper limit and greater than the temperature upper limit, the setting unit compares outside air and return air, and then determines, in accordance with the comparison, whether to set the content so that the cooler performs cooling by minimizing or maximizing the amount of the outside air. | 11-14-2013 |
| 165225000 | Humidity sensor controls indirect-contact cooling means | 4 |
| 165226000 | Liquid spray onto indirect-contact cooling means | 1 |
| 20130186611 | Air Humidification System - A humidifier for use in a central HVAC duct. The humidifier includes a water delivery system for applying water to an evaporator pad, a drain system for removing excess water that is not evaporated, and a control system employing two temperature sensors directly measuring the temperature of the air before and after the evaporator pad. The control system uses the two temperatures to adjust the water flow across the pad by cycling the water delivery system so that drain water is minimized while maximizing the evaporative capacity of the humidifier thus satisfying the humidification load as quickly as possible with the least amount of drain water. The humidifier may have either an integral fan or a flow-through housing for passing air across the wetted evaporator pad to increase the humidity level of the air. | 07-25-2013 |
| 165227000 | Air bypass of indirect-contact cooling means | 3 |
| 20110067851 | BYPASS HUMIDIFIER WITH DAMPER CONTROL - An improved humidifier system for adding humidity to an air stream of an HVAC system. The humidifier system includes an air path that is configured to accept air from a first HVAC duct and return air to a second HVAC duct. A damper is disposed in the air path to selectively substantially block the flow of air in the air path, or to substantially not block the flow of air in the air path. In some cases, the damper may be a motorized damper, and the humidifier system may include a controller that is configured to cause the motorized damper to not substantially block the flow of air in the air path during a call for humidifier operation, and to substantially block the flow of air in the air path after the call for humidifier operation ends. Alternatively, the damper may be manually actuated, and an HVAC controller may be configured to notify when the damper should be moved (e.g. between seasons). | 03-24-2011 |
| 20120006524 | OPTIMIZED TUBE BUNDLE CONFIGURATION FOR CONTROLLING A HEAT EXCHANGER WALL TEMPERATURE - A heat exchanger comprises: a first medium inlet operable to receive a first medium into the heat exchanger; a first medium outlet operable to expel the first medium from the heat exchanger; a second medium inlet operable to receive a second medium into the heat exchanger; a second medium outlet operable to expel the second medium from the heat exchanger; and a plurality of parallel tubes running from the second medium inlet to the second medium outlet operable to carry the second medium from the second medium inlet to the second medium outlet, the plurality of tubes including: a first section of a first plurality of tubes, at least one of the first plurality of tubes having a first diameter, situated so that the first medium first flows from the first medium inlet over exterior walls of the first plurality of tubes and through gaps between the first plurality of tubes; and a second section of a second plurality of tubes, at least one of the second plurality of tubes having a second diameter that is different than the first diameter, situated so that after the first medium flows past the first section of the first plurality of tubes the first medium then flows over exterior walls of the second plurality of tubes and through gaps between the second plurality of tubes to the first medium outlet. | 01-12-2012 |
| 20190145721 | AUTOMATED CONTROL OF HEAT EXCHANGER OPERATION | 05-16-2019 |
| 165229000 | Humidity sensor controls humidifier | 2 |
| 20120111554 | Indoor Water Display and Air Improvement System - An automated indoor water display system has a panel. A pump is operable to pump water from a reservoir to the panel in a manner that causes water to flow over at least a portion of the panel. The panel is held in a housing adapted to limit escape of moisture from the housing. The system can include a humidity control system operable to increase and/or decrease humidity in response to a humidity sensor. The system can include an ultraviolet sanitization system that limits microbial growth in the system. The system can also include a cleaning system that automatically exchanges water in the system with fresh water while the pump operates continuously during the exchange. The system can also include a fan positioned to direct airflow from the room containing the display unit toward the water flowing over the body to enhance removal of airborne contaminants from the air. | 05-10-2012 |
| 20150338119 | EVAPORATIVE HUMIDIFIER AND INDOOR CLIMATE CONTROLLING SYSTEM COMPRISING THE SAME - The invention relates to an evaporative humidifier including a water reservoir, a wick unit and a fan unit. The wick unit is configured to absorb water from the water reservoir. The fan unit is arranged within a fan housing and configured to force an air flow to flow through the wick unit. The fan housing comprises a top cover unit defining at least one annular air outlet at an outer part adjacent a circumference of the top cover unit. One of the main advantages of this invention is that the evaporative humidifier has an optimal air flow path and can operate in a low noise. The invention also relates to an indoor climate controlling system using such an evaporative humidifier. | 11-26-2015 |
| 165230000 | Dewpoint controlled (e.g., control of cooling means by downstream temperature sensor to maintain controlled dewpoint of downstream air, etc.) | 4 |
| 20100212879 | METHODS OF DEHUMIDIFICATION CONTROL IN UNOCCUPIED SPACES - Methods of providing dehumidification control in unoccupied spaces are disclosed. An illustrative method can include the steps of providing a controller having an away mode of operation adapted to provide dehumidification within the interior space of a building or room, providing one or more system components adapted to control the humidity and/or temperature within the interior space, initiating the away mode of operation within the controller, and operating the one or more system components for at least one cycle to reduce the humidity within the interior space. | 08-26-2010 |
| 20110146965 | COOLING SYSTEM WITH INDIRECT HUMIDITY DETERMINATION - A cooling system for a data center in which equipment racks are disposed has a cooling unit and a controller coupled to the cooling unit. The cooling system includes temperature sensors at or near the cooling unit's air return inlet, at or near the cooling unit's air supply outlet, and at or near the equipment racks air inlet(s). The controller measures these temperatures. A relative humidity sensor is located at or near the air return inlet of the cooling unit. The relative humidity where the relative humidity sensor is located is measured by the controller using the relative humidity sensor. The controller calculates the dew point temperature from the temperature sensor and relative humidity. Using this dew point, which is essentially constant throughout the space being conditioned, and the temperatures from the other locations, the controller then calculates the relative humidity at each location. | 06-23-2011 |
| 20150300657 | Radiant Heating and Cooling System - A heat exchange assembly is disclosed. In some embodiments, the heat exchange assembly includes a plurality of profiles arranged in an parallel array, each profile including a first distal portion, a central portion and a second distal portion, with a length and a width of the central portion defining a plane, the first distal portion having a curvature departing from this plane in a first direction, and the second distal portion having a curvature departing from this plane in a second direction that is opposite the first direction. An amount of piping is thermally coupled with and disposed along the length the central portion of each profile. A bracketing system statically anchors the profiles to a surface. Fluid is circulated within the piping to facilitate heat exchange between the assembly and the surrounding environment. | 10-22-2015 |
| 20160114651 | METHODS FOR DETERMINING THE AMBIENT AIR HUMIDITY OF A VEHICLE WITH AN AIR-CONDITIONING SYSTEM, FOR PREVENTING WINDOW MISTING AND FOR DETERMINING WHETHER AN EVAPORATOR IS DAMP OR DRY - A method for determining relative humidity in ambient air of a motor vehicle with an air-conditioning system is provided. That method includes determining, from measurement values of ambient air temperature and the air outlet temperature of an evaporator of the air-conditioning system, the ambient air humidity. Further, that method includes measuring the air outlet temperature of the evaporator at a time at which the compressor of the air-conditioning system was switched on and then has been switched off while the air-conditioning system remains in fan mode, and also after waiting until the evaporator contains no further liquid refrigerant of the air-conditioning system but is still damp. | 04-28-2016 |
