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173results about "Control inputs involving system states" patented technology
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humidifier
A humidifier according to an embodiment of the present disclosure includes: a water tank forming a space in which water is held; a first humidification reservoir connected to the water tank through a supply tube, in which a heater is placed; a first valve opening and closing the supply tube; a second humidification reservoir connected to the first humidification reservoir through a first connection pipe, in which a vibrator is placed; and a middle tray placed below the water tank, and a weight sensor is placed in the middle tray, and when a weight value based on data sensed by the weight sensor is equal to or smaller than a first reference value in an operation stop state, the first valve is opened.
Owner:LG ELECTRONICS INC
Air conditioning controllers and terminal equipment
To provide an air-conditioning controller capable of preventing easy detachment of a cable connected to an air conditioner.SOLUTION: An air-conditioning controller includes: a casing 2; an accommodation part 11 disposed in the casing 2 and accommodating an electronic component; a mounting plate 24 disposed on a back surface side of the accommodation part 11 to fix a body on a wall surface of a building; and a connector 34 disposed on a back surface side of the casing 2 and connecting the cable. The mounting plate 24 includes: a mounting plate body 25 fixed to the wall surface; and a movable part 26 that couples one side of the body 25 to one side of the casing 2 via a hinge mechanism. The mounting plate body 25 includes an opening part 36 for inserting a cable 38 to be connected to an air conditioner 10. The casing 2 has a front surface side cover 22 and is fixed to the mounting plate body 25 by screws 30a, 30b therein.SELECTED DRAWING: Figure 1
Owner:DENSO WAVE INC
Diagnostics of outdoor unit of HVAC system based on sound signatures
A method for heating, ventilation, and air conditioning (HVAC) system diagnostics includes sending a first instruction to a thermostat to shut down an HVAC system. A user is instructed to minimize background noise. A second instruction is sent to the thermostat to turn on the HVAC system. A third instruction is sent to the thermostat to set a temperature setpoint below or above a value of a room temperature. Outdoor unit sound data is captured for a second time period. The baseline sound data is subtracted from the outdoor unit sound data to determine normalized outdoor unit sound data. Expected sound signatures of the outdoor unit are identified. The normalized outdoor unit sound data is compared to the expected sound signatures. In response to determining that an expected sound signature for a compressor is missing from the normalized outdoor unit sound data, it is determined that the compressor has failed.
Owner:LENNOX IND INC
Method for drying wick unit of humidifier, controller, humidifier and program product
PCT designated stageWO2026027270A1Mechanical apparatusLighting and heating apparatusProcess engineeringIndustrial engineering
The present disclosure relates to a method for drying a wick unit of a humidifier, a controller, the humidifier and a program product. The method includes: detecting, at a first moment during operation of the humidifier, that a liquid level in the humidifier is less than a predetermined threshold; acquiring a speed setting of an air supply unit of the humidifier at the first moment and ambient humidity at the first moment; determining a continuing operation time of the air supply unit based on the speed setting of the air supply unit and the ambient humidity; performing timing for the continuing operation time to a second moment; and stopping operation of the air supply unit at the second moment. In this way, when the humidifier is short of water, the drying function is automatically started, and drying of the wick unit and / or a tank is completed without changing an operation mode.
Owner:VERSUNI HLDG BV
Control systems for heating ventilation and cooling systems
The disclosure relates to control systems for heating ventilation and cooling systems. In some examples, a controller for a heating ventilation and cooling system receives, from a first temperature sensor, a first temperature of a first air flow entering a conditioner system. The controller also receives, from a first humidity sensor, a first dew point of the first air flow, and also receives, from a thermostat, a desired temperature for a conditioned space. The controller generates adjustment data characterizing an adjustment to at least one of: (1) an exhaust air flow, (2) a desiccant flow rate, (3) a water flow rate, (4) a total air flow rate, and (5) a liquid desiccant concentration of the conditioner system based on at least one of the first temperature, the first dew point, and the desired temperature. The controller transmits the adjustment data to the conditioner system to cause the adjustment.
Owner:BLUE FRONTIER INC
Air conditioner control method and device, air conditioner and storage medium
The application discloses an air conditioner control method and device, an air conditioner and a storage medium, and belongs to the technical field of air conditioners. The application obtains the discharge pressure and the return air pressure of the compressor; controls the operation of the flow regulating device according to the discharge pressure and the return air pressure, detects the discharge pressure and the return air pressure of the compressor in real time, then adjusts the flow regulating device according to the detected discharge pressure and return air pressure, adjusts the flow regulating device, and effectively avoids the situation that the compression ratio of the compressor is increased, further protects the compressor, and prolongs the service life of the compressor.
Owner:WUHU MATY AIR CONDITIONING EQUIP CO LTD +1
Air-conditioning device
This air-conditioning device compares a first operation valve provided between a compressor and an indoor heat exchanger on a gas pipe, a second operation valve provided between the expansion valve and the indoor heat exchanger on a liquid pipe, a first temperature measurement unit for measuring the temperature of the indoor heat exchanger, a second temperature measurement unit for measuring the temperature of an outdoor heat exchanger, a third temperature measurement unit for measuring the indoor temperature, a fourth temperature measurement unit for measuring the outdoor temperature, and a control device. The control device has an operation determination unit, a first comparison unit for comparing the outdoor temperature with the temperature of the outdoor heat exchanger in the case of a cooling operation, and a first determination unit for determining the state of each device when the temperature of the outdoor heat exchanger is lower than the outdoor temperature.
Owner:MITSUBISHI HEAVY IND THERMAL SYST
System and methods for dynamically allocating voltage in a compressor motor
PendingUS20260085848A1Mechanical apparatusLighting and heating apparatusElectric machineControl system
A system including a motor of a compressor system and a motor controller is disclosed. The controller is configured to selectively allocate voltage between a first winding and second winding of the compressor motor. Allocation of voltage biases the first winding of the compressor motor over the second winding. The controller selectively allocates voltage to bias windings in response to a command to transition the HVAC control system from the first operating mode to a second operating mode. The controller further selectively allocates voltage to bias windings in response to received sensor data, such as temperature, pressure, or time data. The controller biases voltages for one or more operating modes or load intervals of the system.
Owner:REGAL BELOIT AMERICA INC
Laboratory multi-room pressure gradient controller
ActiveCN223783006UMechanical apparatusLighting and heating apparatusControl signalMechanical engineering
The utility model relates to a laboratory multi-room pressure gradient controller, which comprises a plurality of laboratories, a pressure gradient controller, a control screen, ventilation equipment, an absolute pressure difference sensor and a relative pressure difference sensor are arranged in each laboratory, and the control screen is in electric signal connection with the pressure gradient controller. The absolute pressure difference sensor and the relative pressure difference sensor are respectively in electric signal connection with a detection data input end of the pressure gradient controller, the ventilation equipment is in electric signal connection with a control signal output end of the pressure gradient controller, three air pipes are arranged on the pressure gradient controller, a first air pipe is connected with a room of a previous laboratory, and a second air pipe is connected with a second laboratory; the second air pipe is connected with the laboratory, the third air pipe is connected with the atmosphere, a multi-way pipe is arranged on the second air pipe, one branch pipe on the first air pipe and one branch pipe on the second air pipe are connected with a relative differential pressure sensor, and the other branch pipe on the second air pipe and the third air pipe are connected with an absolute differential pressure sensor. According to the utility model, the regulation efficiency and the control precision of the laboratory pressure can be improved.
Owner:SUZHOU XINAO INFORMATION TECH CO LTD
Learning method, server control device, air conditioning control device, and learning device
To solve the problem that a prediction model for predicting power consumption of an air conditioner installed in a server room in a facility has to be generated for each server room.SOLUTION: The air conditioner 2 is installed in a server room 92 in the facility 91. The air conditioning learning device 1 generates the prediction model M1 by learning the air conditioning feature values and the power consumption of the air conditioner 2 in association with each other. The prediction model M1 predicts the power consumption of the air conditioner 2 from the air conditioning feature amount. The air conditioner 2 includes an indoor fan 22, an air inlet 20a, and an air outlet 20b. The air conditioning characteristic amount includes the difference between the static pressure of the air in the vicinity of the air inlet 20a and the static pressure of the air in the vicinity of the air outlet 20b.SELECTED DRAWING: Figure 1
Owner:DAIKIN INDUSTRIES LTD
Systems and methods for controlling equipment based on chiller efficiency assessments
ActiveUS12566017B2Mechanical apparatusSpace heating and ventilation safety systemsEnergy balancingControl engineering
A method for assessing an efficiency of a chiller. The method includes: performing, using a processor of a computer system, an energy balance check on operational data of a chiller in a chiller group; selecting, using the processor and based on the energy balance check, a reference chiller from one or more other chillers in the chiller group, wherein an energy flow of the reference chiller has a best energy balance amongst the one or more other chillers; determining, using the processor and reference operational data from the reference chiller, the efficiency of the chiller; and performing, based on the determined efficiency of the chiller, an action with respect to a chiller plant containing the chiller. Other aspects are described and claimed.
Owner:HONEYWELL INTERNATIONAL INC
Smart HVAC rooftop units with integrated ai and thermal imaging for enhanced operational control
Improved apparatus and methods for a Smart Rooftop Unit (SRTU) incorporating infrared (IR) thermal imaging and artificial intelligence (AI) for enhanced HVAC performance are disclosed. The SRTU integrates multiple IR cameras positioned strategically on, around, or within the unit to capture comprehensive thermal images, enabling real-time monitoring and predictive maintenance. An AI-driven control system analyzes the thermal images to optimize defrost cycles, heating and cooling loads, and overall system efficiency. The control system interfaces with building management systems (BMS) for dynamic adjustments based on occupancy, air quality, and weather conditions. The modular design of the SRTU facilitates easy assembly, maintenance, and component upgrades. Advanced sensors and environmental monitors provide continuous data to ensure optimal operation and energy efficiency. The methods include steps for data acquisition, AI analysis, and system adjustments to maintain peak performance and extend the lifespan of the SRTU components.
Owner:CLAUGER USA LLC
Air conditioner and control method
Provided is an air conditioner having a function for preventing pooling of refrigerant when an air-warming operation is thermally off or stopped. A multi-type air conditioner having an outdoor unit, a plurality of indoor units, and a control device, the outdoor unit and the plurality of indoor units being connected by refrigerant piping, wherein the control device has: a means for stopping a fan provided to an indoor unit that is executing an air-warming operation when the indoor unit is thermally off, where the indoor temperature has reached a set temperature so that heat exchange in the indoor heat exchanger is unnecessary, or when the indoor unit assumes an air-warming stop state in which the air-warming operation is stopped; a means for increasing the opening degree of an expansion valve provided to the indoor unit when the indoor unit assumes the air-warming stop state; and a means for blocking refrigerant from flowing into and out of the indoor heat exchanger provided to the indoor unit after the fan has been stopped and the opening degree of the expansion valve has been increased.
Owner:MITSUBISHI HEAVY IND THERMAL SYST
Dusting frequency detection based on air cleaner performance
ActiveUS12540744B2Dispersed particle filtrationLighting and heating apparatusAir cleaningEnvironmental engineering
An air cleaning system includes a housing having an inlet and an outlet, and a filter positioned within the housing, downstream of the inlet. A fan assembly is located within the housing. The fan assembly is in airflow communication with the filter. A sensor is positioned within the housing. The sensor is configured to monitor at least one of a particle size, an accumulation of dust on a surface of the filter, and a pressure drop over the filter. A result of a comparison between a measured dust level at the filter and a dust threshold is communicated to a user.
Owner:CARRIER CORP
Heat exchange device
To prevent a refrigerant from flowing into a control chamber and igniting when the refrigerant having combustibility leaks into a machine chamber for storing a compressor.SOLUTION: A machine room 21 that forms a first space S1 that houses the compressors 5, a control device 30 that controls the compressors 5, a control room 22 that houses the control device 30 and forms a second space S1 that is isolated from the first space S2, a communication portion 2324 that causes the first space S1 and the second space S2 to communicate with each other, and an air discharge fan 26 that generates a flow of air guided from the second space S2 to the first space S1 via the communication portion 2324; The air-cooled heat pump chiller 1 includes a refrigerant concentration detection part 27 for detecting the concentration of the refrigerant leaked to a machine chamber 21, and a control device 30 controls an exhaust fan 26 so as to increase the air blowing amount of the exhaust fan 26 according to the increase of the concentration of the refrigerant detected by the refrigerant concentration detection part 27.SELECTED DRAWING: Figure 2
Owner:MITSUBISHI HEAVY IND THERMAL SYST
humidifier
A humidifier according to an embodiment of the present disclosure includes: a water tank forming a space in which water is held; a first humidification reservoir connected to the water tank through a supply tube, in which a heater is placed; a first water level sensor sensing a water level of water held within the first humidification reservoir; a second humidification reservoir connected to the first humidification reservoir through a first connection pipe and a second connection pipe, in which a vibrator is placed; a second water level sensor sensing a water level of water held within the second humidification reservoir; and a pump placed in the second connection pipe, and when a humidification operation is turned on, a first water level is sensed by the second water level sensor, a residual water recovery operation is performed in which the pump operates to recover residual water in the second humidification reservoir to the first humidification reservoir through the second connection pipe.
Owner:LG ELECTRONICS INC
Air conditioner for improving cooling performance and control method thereof
PCT designated stageWO2026005229A1Mechanical apparatusSpace heating and ventilation safety systemsCurrent limitingMechanical engineering
Provided is an air conditioner. The air conditioner includes a compressor, a power module configured to drive the compressor, a power module temperature sensor configured to detect the temperature of the power module, a memory configured to store one or more computer programs, and one or more processors communicatively coupled to the compressor, the power module, the power module temperature sensor, and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed individually or collectively by the one or more processors, cause the air conditioner to: determine whether a current of the compressor corresponding to a target frequency of the compressor is greater than or equal to an upper limit current corresponding to the outside air temperature, and, on the basis of determining that the current of the compressor is greater than or equal to the upper limit current corresponding to the outside air temperature, limit the current applied to the compressor to a value less than the upper limit current corresponding to the outside air temperature when the outside air temperature is less than a reference temperature, and increase the current applied to the compressor to a value greater than or equal to the upper limit current on the basis of the detected temperature of the power module when the outside air temperature is greater than or equal to the reference temperature.
Owner:SAMSUNG ELECTRONICS CO LTD
Controller and method for managing a flow unit
There is described a controller and method for managing a flow unit (322-326). A measured pressure drop corresponding to a full open position of a flow control element (346-350) is detected. A calibration pressure drop at full open is established based on the measured pressure drop, and relative pressure drops are calculated based on the calibration pressure drop at full open and calibration pressure drops corresponding to calibration positions of the element (346-350). Subsequent to calibration, an operation pressure drop of the flow unit (322-326) and an operation position of the element (346-350) are detected. A dynamic nominal is determined based on the operation pressure drop and a particular relative pressure drop corresponding to the operation position. An operation relative flow and a relative flow setpoint are determined based, in part, on the dynamic nominal. The operation position of the flow control element (346-350) is controlled based the operation relative flow and relative flow setpoint.
Owner:SIEMENS INDUSTRY INC
Blade-adjustable unpowered hood and constructed flue gas waste heat recovery system
ActiveCN116791855BLarge amount of smokelarge openingEnergy recovery in ventilation and heatingDomestic stoves or rangesThermodynamicsFlue gas
The application discloses a wind blade adjustable non-powered air cap and a flue gas waste heat recovery system constructed by the same. The non-powered air cap comprises an air cap body, a lifting mechanism and a pressure sensor. The air cap body comprises a cap top, a bottom ring and a group of wind blades closely arranged between the cap top and the bottom ring. The pressure sensor is arranged on the inner wall of the cap top. The upper end of the wind blade is located above the cap top, and the end slightly exceeds the outer edge of the cap top. The number of the lifting mechanism corresponds to the number of the wind blades, and the lifting mechanism is annularly distributed on the cap top and comprises a lifting plate. The two ends of the lifting plate are respectively provided with an electric push rod and a lifting shaft. The electric push rod is fixed to the inner wall of the cap top, and the lifting shaft is connected with the wind blade. The electric push rod and the pressure sensor are electrically connected with a control box. When the pressure sensor detects that the pressure in the air cap is too large, the lifting mechanism works, the height of the wind blade is lifted, the opening of the wind blade is increased, and thus the exhaust capacity of the air cap is increased and the exhaust efficiency is improved.
Owner:INNOVATION RES INST OF ZHEJIANG UNIV OF TECH SHENGZHOU
Humidifier
PendingCN121452618AMechanical apparatusLighting and heating apparatusProcess engineeringMechanical engineering
Owner:LG ELECTRONICS INC
Humidifier
PendingCN121594444AMechanical apparatusLighting and heating apparatusProcess engineeringMechanical engineering
A humidifier according to one embodiment of the present invention comprises: a water tank forming a space in which water is stored; a first humidifying water tank connected to the water tank through a supply pipe and provided with a heater; a first valve for opening and closing the supply pipe; the second humidifying water tank is connected with the first humidifying water tank through a first connecting pipe and is provided with a vibrator; the middle tray is arranged on the lower side of the water tank; the middle tray is provided with a weight sensor; in an operation stop state, if a weight value based on data detected by the weight sensor is below a first reference value, the first valve is opened.
Owner:LG ELECTRONICS INC
Integrated thermal energy storage and heat pump system for enhanced demand response
A thermal management system is disclosed having an integrated thermal energy storage module that is operated in a manner that provides energy-saving demand response. The thermal management system monitors operating conditions, including indoor and outdoor temperatures, a state of charge of the integrated thermal energy storage module, a temperature of the energy storage medium of the integrated thermal energy storage module, and the costs to operate the thermal management system. Based on the operating conditions, the thermal management system optimizes the heating or cooling operations by leveraging the integrated thermal energy storage module when appropriate.
Owner:ROBERT BOSCH GMBH
humidifier
A humidifier according to an embodiment of the present invention includes: a water tank forming a space in which water is held; a first humidification reservoir connected to the water tank through a supply tube, in which a heater is placed; a first valve opening and closing the supply tube; a second humidification reservoir connected to the first humidification reservoir through a first connection pipe, in which a vibrator is placed; a second valve opening and closing the first connection pipe; and a blower fan placed below the first humidification reservoir and the second humidification reservoir, and when a humidification operation is turned on, a sterilization mode of sterilizing the second humidification reservoir is performed, and in the sterilization mode, water in the first humidification reservoir is heated by driving the blower fan and the heater, and the heated water is supplied to the second humidification reservoir by open-closing the second valve, and an open control state of the second valve is maintained.
Owner:LG ELECTRONICS INC
humidifier
Owner:LG ELECTRONICS INC
Outdoor unit of air conditioner
An outdoor unit of an air conditioner may include a compressor having a power terminal and a discharge port that protrudes from a surface or an upper surface thereof, and a fixing bracket coupled at a point on the surface or the upper surface of the compressor that is spaced apart from the power terminal and the discharge port. The fixing bracket may be provided with a hanging hole to which a hoist may be hooked and a sensor holder on which a temperature sensor may be mounted.
Owner:LG ELECTRONICS INC
Diagnostics of HVAC system based on visual and sound signatures
ActiveUS12663173B2Mechanical apparatusLighting and heating apparatusDiagnostic modalitiesControl engineering
A method for heating, ventilation, and air conditioning (HVAC) system diagnostics includes, in response to determining that a triggering event has occurred, entering a filter diagnostics mode. A first instruction is sent to a thermostat to shut down an HVAC system. A user is instructed to locate and remove a filter. The filter is classified as acceptable or dirty. In response to classifying the filter as acceptable, the user is instructed to the turn on the HVAC system. In response to determining based on the triggering event that a desired mode is a cooling mode, a first value of a room temperature is determined. The user is instructed to set a temperature setpoint below the first value. A second value of the room temperature is determined. In response to determining that the second value is less than the first value, it is determined that the HVAC system operates properly.
Owner:LENNOX IND INC
humidifier
PendingUS20260036325A1Mechanical apparatusLighting and heating apparatusProcess engineeringMechanical engineering
Owner:LG ELECTRONICS INC
DYNAMIC INSULATING WALL CONSTRUCTION AND CONTROL METHOD
ActiveDE602023016059T2Energy recovery in ventilation and heatingMechanical apparatusOrganic chemistryEnvironmental geology
Owner:IRID3 SRL
Control method of multi-split air conditioner and related equipment thereof
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Heating-type vaporizing humidifier
PCT designated stageWO2026084107A1Ducting arrangementsMechanical apparatusThermodynamicsWater storage tank
A vaporizing humidifier according to an embodiment of the present disclosure may comprise: a main body housing including a plurality of inlet holes; a water storage tank disposed on the bottom of the main body housing; an air filter including a blowing fan and a duct spatially connected to the blowing fan, the duct including an inlet and an outlet, wherein the outlet is formed to have a cross-sectional area smaller than the cross-sectional area of the inlet, so that air passing through the duct is accelerated, the air filter being disposed on the water storage tank; and a heating water tank disposed on the air filter, connected to the water storage tank by using at least one pipe, including a heater disposed on the bottom thereof, and configured to heat stored water by heating of the heater. In the vaporizing humidifier according to an embodiment of the present disclosure, air introduced into the main body housing through the inlet holes may be directed to the duct via the air filter by the blowing fan, and the accelerated air may be mixed with water vapor by the blowing fan in the heating water tank and discharged to the outside of the main body housing in a humidified state.
Owner:ZEROWELL INC