531results about "Control inputs involving system states" patented technology

The present invention relates to a steam generator, which includes: a steam shell forming an outer shape and having a space for storing water formed therein; a steam heater, which is arranged inside the steam shell and generates steam by heating the water stored inside the steam shell by applying power; a water pipe, which is arranged on one side of the circumferential surface of the steam shell and is formed with a connecting hole, wherein the connecting hole allows water to flow from the outside into the interior of the steam shell, or allows water inside the steam shell to flow out to the outside; an air intake portion, which is arranged on the upper surface of the steam shell and is formed with an air intake port, wherein the air intake port allows air to flow into the interior of the steam shell; and a steam discharge portion, which is arranged on the upper surface of the steam shell at a predetermined interval from the air intake portion and is formed with a steam discharge port for discharging steam generated inside the steam shell and air flowing in through the air intake portion to the outside.

Examples of the present disclosure relate to systems and methods for providing an elevated third-stage of operation to a two-stage compressor of a climate control system. The first low stage and the second high stage are provided with open or closed bypass ports respectively and by operating the two-stage compressor at a rated power setting. The elevated third-stage of operation is provided by operating the two-stage compressor at the high stage with an overdrive power setting. The elevated third-stage may be enabled in heating mode and locked out in cooling mode. The two-stage compressor may be further locked out of the second high stage in cooling mode and an indoor fan may be operated at various speeds to provide additional cooling capacity. Switching between each stage of the two-stage compressor may be controlled by additional control circuitry including a plurality of relays.

The invention discloses an air conditioner and a control method thereof.The air conditioner comprises a refrigerant circulation loop, an electronic expansion valve, an indoor fan, an outdoor fan, an outdoor environment temperature sensor, an indoor environment temperature sensor, an indoor coil pipe temperature sensor, an exhaust pressure sensor and a controller; the current corresponding outdoor environment temperature is obtained, when the outdoor environment temperature exceeds a first preset temperature threshold value, the air conditioner is controlled to execute a refrigeration control strategy under the high-temperature environment, and the difference value between the indoor environment temperature and the simulated air outlet temperature is reduced by adjusting the operation states of a compressor and an outdoor fan; the purpose of improving the air outlet temperature of the air conditioner is achieved, so that the actual requirement of a user can be met, and the somatosensory comfort of the user is improved.

An air conditioner includes a detection sensor, an illuminance sensor, a light, an air conditioning module, at least one processor, and a memory storing instructions, when executed by the at least one processor individually or collectively, cause the air conditioner to determine whether an illuminance value detected by the illuminance sensor is greater than or equal to a first illuminance reference value, detect a human in a target space by using a sensor detection value of the detection sensor, and based on the detected illuminance value being greater than or equal to the first illuminance reference value and a human being detected in the target space, control the light in a first mode in which at least one of luminous intensity or a luminous intensity change pattern of the light is controlled based on a compressor frequency of the air conditioning module.

There is described a controller and method for managing a flow unit. A measured pressure drop corresponding to a full open position of a flow control element 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. Subsequent to calibration, an operation pressure drop of the flow unit and an operation position of the element 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 is controlled based the operation relative flow and relative flow setpoint.

The invention provides an air purifier for collecting pet hair, and relates to the technical field of air purifiers. An air purifier for collecting pet hair comprises an outer shell, an air inlet is formed in the side face of the outer shell, and a containing groove is formed in the position adjacent to the air inlet; the hair collecting box is arranged in the containing groove, and a first inlet is formed in the side, close to the interior of the air purifier, of the hair collecting box; the air inlet channel is arranged in the outer shell, and the air inlet channel communicates with the air inlet and the first inlet; wherein the side wall of the air inlet channel is at least used for forming part of the containing groove, and when the air purifier works, pet hair sequentially passes through the air inlet, the air inlet channel and the first inlet to enter the hair collecting box. By optimizing the design of the air inlet channel, pet hair can be collected into the hair collecting box in the air inlet process of the air purifier.

To properly determine an abnormal state of air conditioning equipment other than failure conditions set beforehand.SOLUTION: A determination device 100 includes a collection part 121, a characteristic value calculation part 122, a difference calculation part 123, and a determination part 124. The collection part 121 collects data regarding the indoor environment where air conditioning equipment is installed in each of a plurality of designated periods. The characteristic value calculation part 122 performs a simulation of the indoor environment respectively based on data in each period collected by the collection part 121, and calculates the characteristic value from the simulation result in each period. The difference calculation part 123 calculates a difference between a characteristic value in each period calculated by the characteristic value calculation part 122 and a value contained in the data regarding the indoor environment in each period collected by the collection part 121 respectively for the corresponding time with each other in the plurality of periods. The determination part 124 determines the abnormality of the air conditioning equipment based on the distribution of differences calculated by the difference calculation part 123.SELECTED DRAWING: Figure 2

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.

The embodiment of the invention provides a control method of a heat recovery system, a controller, the heat recovery system and a medium. The heat recovery system comprises a water tank, an outdoor unit, an indoor unit and a control valve, and the control valve comprises a first valve used for adjusting the flow of a refrigerant flowing through a water tank coil and a second valve used for adjusting the flow of a refrigerant flowing through an outdoor unit coil; under the condition that the heat recovery system executes the partial heat recovery mode, a target priority mode is obtained, and the target priority mode comprises a refrigeration priority mode or a water heating priority mode; and the opening degree of a control valve is adjusted according to the target priority mode so as to distribute the refrigerant flow flowing through the water tank coil pipe and the outdoor unit coil pipe. The heat recovery system can rapidly adjust the opening degree of the control valve through refrigeration priority and heating priority control, it is guaranteed that refrigerants of the water tank coil and the outdoor unit coil are reasonably distributed, the heat exchange efficiency is improved, the system operation energy efficiency is improved, and the actual requirements of users are met.

An air purifier is provided. The air purifier includes a housing, an inner frame arranged inside the housing, a filter assembly configured to remove foreign substances from air introduced into the housing, and to be detachably mounted on the inner frame, and a detection module configured to detect whether the filter assembly is mounted, wherein the filter assembly includes a dust collection filter detachably mounted on the inner frame in a mounting direction (AX), and a pre-filter detachably mounted on the dust collection filter in a direction parallel to the mounting direction, and is arranged on a flow path that is toward the dust collection filter, and wherein the detection module includes a first sensor provided in the inner frame to detect whether the dust collection filter is mounted, and a second sensor provided in the inner frame to detect whether the pre-filter is mounted.

To disclose one example of a refrigerant leakage detector capable of detecting leakage of a refrigerant even when a state where a compressor is in a stopped state for a long time has occurred.SOLUTION: When a value obtained by subtracting detection pressure Pi(n) from reference pressure Pi(m) becomes a predetermined value or higher, a determination device determines occurrence of leakage of a refrigerant. A start day means a day when a compressor starts from a state where the compressor is in a stopped state continuously for 24 hours or longer. The reference pressure Pi(m) means pressure detected by a pressure sensor S1 when the compressor is in a stopped state at the start day. The detection pressure Pi(n) means pressure detected by the pressure sensor S1 in the stopped state when the stopped state of the compressor continues for 24 hours or longer.SELECTED DRAWING: Figure 2

The method, device, and air conditioner for cleaning the filter (1) of an air conditioner relate to the technical field of smart home appliances, and include: acquiring a standby time length and an operating parameter during operation of the air conditioner; acquiring a reference time of the previous filter (1) cleaning when the standby time length is greater than a first threshold value or the operating parameter meets a preset condition; and performing a corresponding filter (1) cleaning operation based on the reference time. The air conditioner can timely start filter (1) cleaning by using the standby time length and the operating parameter as trigger conditions for filter (1) cleaning during standby and operation of the air conditioner, respectively. Furthermore, the air conditioner can perform the corresponding filter (1) cleaning operation based on the reference time of the previous filter (1) cleaning, thereby avoiding a problem that the air conditioner frequently cleans the filter (1) in a short time, resulting in excessive energy consumption, due to a short interval between the time when the air conditioner cleans the filter (1) during standby and the time when the air conditioner cleans the filter (1) during operation.

To provide an air cleaner collecting contaminants included in air by electric discharge.SOLUTION: The air cleaner includes a dust-collection water tank, a housing, an air supply unit, an exhaust unit, a plurality of discharge electrodes, a charging unit, and a rotary blade. The dust-collection water tank is configured to contain a liquid. The housing accommodates the dust-collecting water tank. The air supply unit is configured to supply air from the outside into the dust-collecting water tank to collect contaminants contained in the air. The exhaust unit includes an exhaust pipe disposed to face a water surface of the liquid, and is configured to discharge the air supplied to the dust-collecting water tank to the outside. The plurality of discharge electrodes are arranged along the circumference of the exhaust pipe. The charging unit is disposed in the dust-collecting water tank and charges the liquid to a polarity opposite to the polarity of the plurality of discharge electrodes so that an electric field is formed between the plurality of discharge electrodes and the liquid and contaminants are collected in the liquid. The rotary blade is installed at the bottom of the dust collecting tank and rotates the liquid so that a vortex flow is formed in the liquid. The air cleaner is configured such that a separation distance between a liquid level and the plurality of discharge electrodes is within a predetermined distance range.SELECTED DRAWING: Figure 2

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

A closed-loop climate system including a water tank; cooling pads positioned above the water tank, a thermoelectric unit (TEU) connectable to a power supply, and configured to cool / heat water received from the water tank, a sprinkler tube positioned above the cooling pads and configured to sprinkle the water heated by the TEU onto the cooling pads.

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.

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.

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.

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.

The invention discloses a pipe temperature correction method and device, an air conditioner and a storage medium. The pipe temperature correction method comprises the steps that when the air conditioner is in a refrigeration mode, the refrigerant saturation pressure in an outdoor heat exchanger is determined according to the outdoor coil pipe temperature of the outdoor heat exchanger; determining the suction pressure of the compressor according to the refrigerant saturation pressure and the exhaust temperature of the compressor; determining a first refrigerant saturation temperature corresponding to the compressor suction pressure according to the compressor suction pressure; according to the first refrigerant saturation temperature, the indoor coil pipe sampling temperature of the indoor heat exchanger is corrected, and the first indoor coil pipe temperature is determined; the indoor coil pipe sampling temperature is corrected according to the compressor refrigerant inlet temperature, the accurate indoor coil pipe temperature is obtained, and the situation that due to the large air volume of an air conditioner, the indoor heat exchanger pipe temperature monitoring is not accurate can be avoided.

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.

A humidifying device includes an air inlet, an internal air passage through which air taken in from the air inlet passes, a first thermometer that measures a temperature of the air taken in from the air inlet, a first hygrometer that measures a humidity of the air taken in from the air inlet, a cooler installed in a path of the internal air passage, and a cooling control unit that controls the cooler. The cooling control unit changes a cooling intensity of the cooler in a case where values measured by the first thermometer and the first hygrometer are out of a predetermined range.

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.

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.

This air conditioning system comprises: an outdoor unit; a plurality of indoor units that are each provided with a heat exchanger connected to the outdoor unit via a medium circuit through which a heat medium flows, and that each exchange heat between indoor air and the heat medium which is supplied from a compressor via the medium circuit; an outdoor temperature sensor that detects the outdoor temperature where the outdoor unit is installed; an outdoor unit control device that controls operation of the outdoor unit; and indoor unit control devices that are provided to the plurality of indoor units and that control the operation of the indoor units in accordance with set temperatures which are set externally. The outdoor unit control device includes a setting unit that, on the basis of correlation information which indicates a correlation of a reference pressure saturation temperature and outdoor temperatures and which is set in advance, acquires, as a reference pressure saturation temperature, a pressure saturation temperature corresponding to the outdoor temperature detected by the outdoor temperature sensor, and that, on the basis of the acquired reference pressure saturation temperature, sets a target pressure saturation temperature for adjusting output of the compressor.

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

The invention provides a motor driving device with high reliability and the like. A motor drive device (100) is provided with: an inverter circuit (40) that converts a DC voltage of a smoothing capacitor (20) into an AC voltage; and a control unit (60) that controls the inverter circuit (40), in which an AC voltage on the output side of the inverter circuit (40) is applied to a motor (M1) connected to the fan (F1), the control unit (60) being set so as to stand by without driving the motor (M1) when the detected value of the DC voltage is included in a prescribed range after the power supply is stopped, and to control the inverter circuit (40) when the detected value of the DC voltage is not included in the prescribed range. The higher the induced voltage or rotational speed of the motor (M1) as the fan (F1) idles, the higher the upper limit value and lower limit value of the prescribed range.

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.

Disclosed herein are a system, a method, and a non-transitory computer readable medium for operating an energy plant. In one aspect, the system obtains thermal energy load allocation data indicating time dependent thermal energy load of the energy plant. The system determines, for a time period, an operating state of the energy plant from a plurality of predefined operating states based on the thermal energy load allocation data. The system determines operating parameters of the energy plant according to the determined operating state. The system operates the energy plant according to the determined operating parameters.