A method and a device for controlling a capacity change of a compressor, and a smart home appliance. The method includes: determining whether a capacity of the compressor is required to be changed; if yes, determining an intermediate frequency; changing the capacity of the compressor while maintaining the operating frequency of the compressor at the intermediate frequency; and the maintaining the operating frequency of the compressor at the intermediate frequency reduces a sudden change in output of the compressor after the changing the capacity.

A pressure regulating device cooperates with a semiconductor production system to regulate a pressure in a pipe of a semiconductor production apparatus in the semiconductor production system. The pressure regulating device reduces the pressure in the pipe of the semiconductor apparatus by a suction pump to prevent from liquid leakage when the pipe is broken. In addition, the pressure regulating device can periodically record the pressure change in the pipe to facilitate an operator to judge whether the pipe is damaged and analyze the cause of decrease in production yield.

A cryopump includes a cryopanel, and an adsorption area provided on the cryopanel and capable of adsorbing a non-condensable gas, in which the adsorption area includes a non-combustible adsorbent containing silica gel as a main component thereof. The adsorption area includes a non-combustible adsorbent containing silica gel as a main component thereof.

Provided is a control device that performs protection control of a compressor without malfunction. The control device activates protection control on a compressor included in a refrigerant circuit based on a pressure value detected by a pressure sensor that is installed at a low-pressure side of the refrigerant circuit and a change over time of the pressure value.

A method and controller for creating a digital twin of a pump. The method includes receiving, by a controller, a specification curve corresponding to a centrifugal pump. The method includes building and executing, by the controller, a first model of the centrifugal pump, based on the specification curve. The method includes receiving sensor data corresponding to and during the operation of the pump. The method includes updating the first model according to the sensor data to produce an updated model, and storing the updated model as a digital twin of the centrifugal pump.

The present invention provides wireless sensor technology seamlessly integrated into a pump system having a pump, a motor and a drive, has diagnostic and prognostic intelligence that utilizes sensor data, allows real-time condition monitoring; enables easy access to data and analytics via smart devices (i.e., smart phones and tablets); allows for easy remote monitoring (i.e., web portal) of the pump system; allows self-learning artificial intelligence (AI) built-in that adapts to changing conditions; and allows for smart pump system remote control. In operation, the present invention monitors the health and performance of the pump system that allows the user to get real-time data and intelligence virtually anywhere and anytime, as well as real-time diagnostics and prognostics, and also allows for smart control of the pump system remotely via smart device, and reduces downtime of equipment.

A system and process for predicting the failure of a machine begins with the step of loading a slope signature library into the control system, in which the slope signature library correlates time-to-failure based on rates of change of one or more measured conditions. The process includes the steps of activating the machine, determining baseline measurements, and detecting an out-of-spec measurement. Once an out-of-spec measurement is made, the process includes the determination of the rate of change for the out-of-spec measurement. A slope signature is calculated based on the rate of change for the measured condition, which is compared against the slope signature library to determine a predicted time-to-failure based on the calculated slope signature, and outputting the predicted time-to-failure. The process can be used to modify the operation of the machine to extend the predicted time-to-failure.

A method for evacuating a process space by initially evacuating the process space to a pressure limit value using two compressors operated in parallel, and on reaching or undershooting the pressure limit value, the process space is subsequently evacuated using the two compressors operated in series.

A tree injection apparatus includes a pump coupled with a fluid reservoir that holds a treatment solution under pressure generated by the pump. At least one fluid conduit is provided to have a first end coupled with the pump and a second end coupled with a valve assembly. A feeder tube is releasably engaged at the valve assembly, where the feeder tube is configured to engage a drilled hole extending into vascular tissue of the tree receiving treatment. The pump releases the pressurized treatment solution through the fluid conduit and to the feeder tube at a desired pressure, so as to generally coincide with the absorption rate of the vascular tissue. The feeder tube may be released from engagement with the valve assembly, so as to allow cleaning of the feeder tube of debris, pathogens, and spores before being installed on another tree.

A gas control device (100) includes a first pump (101), a second pump (201), a first check valve (102), a second check valve (202), and a receptacle (9). The volume of the receptacle (9) changes in accordance with the pressure of air flowing thereinto. The first pump (101) has an air suction hole (53) and an air discharge hole (24). The second pump (201) has an air suction hole (197) and an air discharge hole (181). The first pump (101) is a type of pump having a high discharge flow rate and a low discharge pressure. The second pump (201) is a type of pump having a low discharge flow rate and a high discharge pressure. The suction hole (53) of the first pump (101) communicates with a first ventilation hole (106). The suction hole (197) of the second pump (201) communicates with a second ventilation hole (107).