Abstract: Provided is an air conditioner comprising an outdoor unit comprising an outdoor heat exchanger; and an injection device configured to inject water to the outdoor unit, the injection device including a water tank configured to store water; a nozzle configured to inject the water to the outdoor heat exchanger; a communication interface; a memory storing at least one instruction; and at least one processor configured to: obtain state information of the outdoor unit, wherein the obtained state information includes at least one of condenser operating frequency information or fan revolution per minute information of the outdoor unit, and control a water injection operation of the nozzle to inject water to the outdoor heat exchanger, in accordance with the at least one of the condenser operating frequency information or the fan revolution per minute (RPM) information of the outdoor unit included in the obtained state information.

Abstract: An embodiment of an indoor unit of a climate control system includes a blower to generate an airflow, a heat exchanger to transfer heat between a refrigerant and the airflow, and a motor to drive the blower. The motor includes first and second taps, the first tap to be electrically coupled to a first thermostat terminal. The motor configured such that: energizing the first tap and not the second tap operates the motor at a first blower speed; and energizing the first and second tap operates the motor at a second blower speed. The indoor unit also includes an electrical relay switch coupled to the second tap and configured to electrically couple to a second thermostat terminal such that energization of the second thermostat terminal is to actuate the switch from a first position to electrically de-energize the second tap to a second position to electrically energize the second tap.

Abstract: The present invention relates to frozen food dispensing systems configured for external-ingredient delivery and reduced or eliminated internal cleaning requirements. In various embodiments, the system includes a mixing chamber that receives a food portion and a gas portion, an auger driven by an auger motor, a refrigeration system that freezes the mixture to a malleable consistency, and a control system that monitors temperature, motor resistance, and ingredient flow. One embodiment couples one or more external ingredient sources directly to the mixing chamber to extend serving capacity beyond the internal limits of the equipment. Another embodiment employs an external manifold with valves and a vacuum pump to meter multiple ingredients into a blending chamber before transfer into the mixing chamber. A further embodiment provides a single-use or limited-use mixing chamber or a disposable shell to eliminate clean-in-place cycles.

Abstract: A system comprises a liquid desiccant regeneration system, a first air contactor stage, and a second air contactor stage. The regeneration system has a first stage with a first concentration output and first diluted output, and a second stage with a second concentration output, different from the first concentration output, and a second diluted output. The first air contactor stage is coupled to the first concentrated output to form a first output air stream having a reduced water content and a first diluted air contactor output. The second air contactor stage is coupled to the second concentrated output to form a second output air stream having a reduced water content and a second diluted air contactor output. Both diluted air contactor outputs are recirculated into the regeneration system, and the output air streams are combined.

Abstract: An air conditioner includes an outdoor unit, and a plurality of indoor units connected with a refrigerant pipe through which a refrigerant sent from the outdoor unit flows. Each indoor unit includes a refrigerant circuit in which at least an indoor heat exchanger is connected to the refrigerant pipe, an operation controller configured to control the refrigerant circuit according to an operating state, a sensor configured to measure an indoor environment, and a plurality of indoor fans configured to blow air to the indoor heat exchanger. Further, during a dehumidifying operation, the operation controller is configured to control the plurality of indoor fans respectively at different rotation speeds based on a result of the measurement by the sensor.

Abstract: A household refrigeration appliance has a cooling chamber that can be closed off by at least one door. At least one door image recording module with at least one camera sensor and a gyro sensor is arranged on the at least one door. The gyro sensor is permanently active in an operationally ready state of the household refrigeration appliance and is configured to determine that the door is closed, and thereupon to deactivate at least one other component of the door image recording module, and/or to detect an opening movement of the previously closed door and, on this basis, to activate at least one deactivated other component of the door image recording module. The invention is particularly advantageously in the context of refrigerators, specifically refrigerators with double doors in a French-door arrangement.

Abstract: A method of controlling indoor air humidity includes determining a dew point set point and determining a dew point of air from a space within a building. The method also includes, in response to determining that the dew point satisfies the dew point set point, determining a vent air dew point of air in an external environment surrounding the building. The method further includes, in response to determining that the vent air dew point is below the dew point set point by a dew point threshold, controlling a connecting member of a damper assembly to position a first damper of the damper assembly in an open position to draw in vent air from the external environment into the space, and to position a second damper of the damper assembly in a close position to substantially prevent recirculation of air through the dehumidifier.

Abstract: A flash tank overflow warning system for refrigeration systems and cold climate heat pumps. Some embodiments may include heat pump systems that have a compressor, a condenser, and a flash tank. A vapor injection line may be disposed between the flash tank and the compressor to direct vapor refrigerant from the flash tank to the compressor. A warning line may be coupled to a side surface of the flash tank and may be disposed between the flash tank and the vapor injection line. The vertical attachment position of the warning line on the side surface may determine a ratio of vapor to liquid refrigerant in the flash tank. The warning line may prevent overcharging during the active charging process by an operator (e.g., an HVAC technician, etc.). For example, once the warning system triggers, the operator would stop charging and may or may not release a little bit of refrigerant to achieve an ideally charged system.

Abstract: A method and apparatus for controlling compressors in a cascade vapor compression system. The process may include controlling the operation of a first compressor based on a constant band control, and controlling the operation of a second compressor based on a proportional band control. Controlling the first compressor based on the constant band control may include operating the compressor at a constant setting if first measurements are within a range associated with a first setpoint. It may also include proportionally adjusting the operation of the first compressor if the first measurements are outside the range. Further, controlling the second compressor based on the proportional band control may include operating the compressor based on one of a plurality of proportional bands, each proportional band having a different proportional factor. Controlling the second compressor operation may further include switching between these proportional bands based on a second measured parameter.

Abstract: A storage system for storing photoresist coated semiconductor substrates includes a semiconductor substrate container configured to store a plurality of semiconductor substrates. The storage system further includes a gas inlet, a gas outlet, and a sensor coupled to the gas outlet and configured to measure a humidity of a gas exiting the semiconductor substrate container through the gas outlet. The storage system also includes a source of an inert gas or an extreme clean dry air connected via a gas purifier to the gas inlet. The storage system further includes a controller configured to control the gas purifier and the sensor to purge a humidity inside the semiconductor substrate container with the inert gas or the extreme clean dry air such that a relative humidity of the gas exiting the semiconductor substrate container is below a threshold relative humidity.

Abstract: A refrigeration cycle device can include a refrigerant circuit that includes a compressor. A refrigerant can be enclosed in the refrigerant circuit, particularly where the refrigerant can contain a hydrocarbon having 1 to 4 carbon atoms and a sulfur-based odorant. The compressor can be filled with a refrigeration oil, where the refrigeration oil can contain a base oil, and where the ratio of the number of oxygen atoms to the number of carbon atoms in the molecular structure of the base oil is less than 0.50.

Abstract: A humidity control system and method for controlling the humidity of ambient air is disclosed. The system includes a humidification and dehumidification systems to increase and/or decrease the humidity level of an indoor space and a sensor to sense ambient conditions of the space. The system further includes a controller that receives a humidity setpoint for the indoor space, determines the humidity level associated with the indoor space, compares the determined humidity level to the humidity setpoint, and causes activation of one of a humidification system or a dehumidification system. In response to causing the activation of one of the humidification or dehumidification system, the controller initiates a lockout condition during which the other of the one of the humidification or dehumidification system is prevented from activation. The controller also monitors for an override condition and enables activation of the other of the humidification system or the dehumidification system accordingly.

Abstract: A refrigerator includes a refrigerating compartment, a freezing compartment, and an ice-making compartment. The refrigerating compartment is configured to receive cool air from a refrigerating compartment side grille fan assembly, and the ice-making compartment is configured to be located in any one refrigerating compartment door and to receive cool air from a freezing compartment side grille fan assembly with the freezing compartment. The refrigerating compartment side grille fan assembly is configured to supply a greater amount of cool air to a space at a refrigerating compartment door without the ice-making compartment than the amount of cool air supplied to other spaces, and the freezing compartment side grille fan assembly is configured to supply a greater amount of cool air to a space communicating with a recovery duct for the ice-making compartment than the amount of cool air supplied to other spaces.

Abstract: A wall module for a building control system includes a back plate with one or more mounting features for mounting the backplate to a wall. A main body includes one or more attachment features for removably attaching the main body to the back plate. The main body also includes a front side and a back side, wherein at least part of the front side is formed by a front plate. A display is housed by the main body in a display cavity that is defined at least in part by the front plate, and wherein at least part of the display is viewable from the front side. An antenna is housed by the main body in an antenna cavity that is defined at least in part by the front plate.

Abstract: A method of controlling air recirculation via a continuous-feedback loop control system that adjusts cabin air recirculation in vehicles based on a number of different sensor inputs. The system uses a mass balance on the interior passenger compartment of the vehicle to sense and adjust the amount of dissolved water vapor in the cabin for liquid management.

Abstract: A cold storage and a method of operating a cold storage having first cooling unit arranged to cool a compartment and a second cooling unit arranged ensure fast freezing of a substance stored in the compartment. The second cooling unit is operable according to a first, second and third modes of operation involving no, partly, or full contribution from the second cooling unit, wherein shifting between the different modes is determined based on a transition between three different temperature profiles in the compartment.

Abstract: An environmental control system for a vehicle includes a source of a first medium, a cabin air compressing device including a compressor having a compressor inlet and a compressor outlet, and a conduit fluidly coupling the source of the first medium to the compressor inlet. The first medium provided to the compressor inlet is output at the compressor outlet as a compressed first medium. An environmental control system pack is located downstream from and is fluidly coupled to the compressor outlet. The environmental control system pack includes a ram air circuit having at least one ram air heat exchanger. Another conduit for providing a second medium to the compressor fluidly couples an outlet of the at least one ram air heat exchanger and the compressor inlet.

Abstract: Methods are provided for controlling a refrigerated dryer of a gas compressor system. In an aspect, a control system, including a controller and a flow sensor, selectively operates in a power saving mode in which the controller shuts down a refrigerant compressor included in the dryer system when the flow sensor indicates that no compressed gas is flowing through the dryer. The control system uses input from a temperature sensor to determine whether to activate the compressor regardless of the flow of compressed gas through the dryer.

Abstract: A heating, ventilating and air conditioning (HVAC) sensor device includes a control signal input for receiving, from an HVAC controller, a control signal for controlling a HVAC actuator, a control signal output for transmitting a control signal to the HVAC actuator; and an electronic circuit, which receives a sensor signal indicative of condensation and/or indicative of relative humidity; and passes through the control signal to the control signal output in response to the sensor signal indicative of condensation and/or indicative of relative humidity being within defined ranges, or overwrites the control signal received at the control signal input with a control reference value and outputs the overwritten control signal at the control signal output in response to the sensor signal being outside the defined ranges. The control reference value causes the HVAC actuator to move an actuated part to a safety position which reduces and/or prevents formation of condensation.

Abstract: A refrigerant system including a compressor, an oil separator, an oil solenoid valve, a condenser, an evaporator, a bypass pipe, and a bypass solenoid valve is disclosed. The oil separator is connected to an output end of the compressor. The oil solenoid valve is disposed between the oil cooler and the compressor. The condenser is connected to the oil separator. The evaporator is connected to the condenser. The bypass pipe has a first end and a second end opposite to the first end. The first end is connected between the oil separator and the condenser, and the second end is connected between the evaporator and an input end of the compressor. The bypass solenoid valve is disposed on the bypass pipe. A controlling method for the refrigerant system is also disclosed.