A method for operating an electric air compressor assembly. The assembly includes an electric motor and a compressor which is mechanically coupled to the electric motor and which is capable of providing compressed air to a tank The method comprises monitoring the temperature of at least one component of the electric air compressor assembly and controlling the motor speed as a function of said temperature running the motor at a first speed S1, which results in the temperature increasing; when the temperature reaches a temperature threshold, which is lower than a maximum admissible temperature, running the motor at a second speed S2>S1 until a predetermined desired pressure in the tank is reached.

An oil-feed-type air compressor includes a compressor main body driven by an electric motor, a separator that separates the oil from compressed air delivered from the compressor main body, an oil supply system that supplies the oil separated by the separator to working chambers of the compressor main body, an oil cooler that is disposed in the oil supply system and cools the oil by using cooling air generated by a cooling fan, and a controller. The controller stops the electric motor and the cooling fan when the continuation time of no-load operation has reached a predetermined value. Further, the controller predicts the return timing at which the electric motor is restarted, on the basis of a sensing history of the delivery-side pressure sensor, and predicts the delivery-side temperature of the compressor main body at the return timing.

The present disclosure provides a compressor system, including: a compressed gas unit, including a compressor body; a temperature sensor, disposed at a discharge end of the compressor body, and configured to measure a discharge temperature of a compressed gas discharged from the discharge end of the compressor body; a discharge temperature control module, electrically connected to the compressed gas unit and the temperature sensor, respectively, and including: a controller, configured to generate a first control signal according to a target temperature of the compressed gas unit and the discharge temperature; a disturbance observer, configured to generate a final disturbance measurement signal of the compressed gas unit according to the discharge temperature.

A compressor temperature protection module and protection system thereof, wherein the module includes an automatic temperature sensing switch that senses a first temperature in a compressor and a passive temperature sensing switch that senses a second temperature on the compressor. When the passive temperature sensing switch senses the second temperature is greater than a second default value, the passive temperature sensing switch automatically severs a connection between a direct current (DC) power source and a processor module. When the automatic temperature sensing switch senses the first temperature within the compressor is greater than a first default value, the automatic temperature sensing switch automatically severs a connection between the compressor and a power supply. Afterwards, when the first temperature becomes less than the first default value, the automatic temperature sensing switch electrically connects to the control switch of the control module.

To obtain a vacuum pump which appropriately performs temperature management of a gas flow path and reduces restrictions on a gas flow rate attributable to the temperature management. A cooling tube performs temperature adjustment of a gas flow path. A first temperature sensor is arranged at a position closer to the gas flow path than the cooling tube, a second temperature sensor is arranged at a position closer to the cooling tube than the gas flow path, and a control apparatus controls, based on a sensor signal of the first temperature sensor and a sensor signal of the second temperature sensor, (an on-off valve of) the cooling tube so that a temperature of the gas flow path approaches a predetermined gas flow path target temperature.

A lighting apparatus includes a main controller, a fan driver module and a light driver module. The lighting apparatus is coupled to a wall switch. The wall switch is operated by a user to selectively send a wireless fan command a wireless light command to the main controller. The main controller translates the fan command to a fan control signal to the fan driver module. The fan driver module generates a fan driving current to a fan device. The main controller translates the light command to a light control signal to the light driver module. The light driver module generates a light driving current to a light source.