To save washing water, a container washing facility for washing an inner surface of a can (2) before the can (2) is filled with a material includes a conveyor (9) that conveys the can (2) at least in a posture of being inverted with an opening (2a) of the can (2) facing downward, a cleaning air jetting unit (10) located along a conveying path of the can (2) conveyed by the conveyor (9) to jet cleaning air to the inner surface of the can (2) through the opening (2a) of the can (2) while the can (2) is being conveyed, and a washing water jetting unit (11) located along the conveying path of the can (2) conveyed by the conveyor (9) to jet washing water to the inner surface of the can (2) through the opening (2a) of the can (2) while the can (2) is being conveyed.

To save washing water, a container washing facility for washing an inner surface of a can (2) before the can (2) is filled with a material includes a conveyor (9) that conveys the can (2) at least in a posture of being inverted with an opening (2a) of the can (2) facing downward, a cleaning air jetting unit (10) located along a conveying path of the can (2) conveyed by the conveyor (9) to jet cleaning air to the inner surface of the can (2) through the opening (2a) of the can (2) while the can (2) is being conveyed, and a washing water jetting unit (11) located along the conveying path of the can (2) conveyed by the conveyor (9) to jet washing water to the inner surface of the can (2) through the opening (2a) of the can (2) while the can (2) is being conveyed.

Provided is a washing machine for washing empty containers. The machine includes a conveyor having seats for respective containers to convey a plurality of containers in their respective seats along a washing path. The machine includes at least one treatment station including a tank for holding a cleaning medium for washing the containers, the washing path extending through the tank, and at least one ultrasonic wave generator arranged adjacent to the washing path. Also included is a sensor unit for sequentially inspecting each seat for detecting the presence of containers therein downstream of the inlet station, and for generating signals correlated to the absence of containers in the inspected seats. Also included is a control unit configured to receive said signals and to control the ultrasonic wave generator based on the received signals for modulating a level of ultrasonic wave generation.

Provided is a washing machine for washing empty containers. The machine includes a conveyor having seats for respective containers to convey a plurality of containers in their respective seats along a washing path. The machine includes at least one treatment station including a tank for holding a cleaning medium for washing the containers, the washing path extending through the tank, and at least one ultrasonic wave generator arranged adjacent to the washing path. Also included is a sensor unit for sequentially inspecting each seat for detecting the presence of containers therein downstream of the inlet station, and for generating signals correlated to the absence of containers in the inspected seats. Also included is a control unit configured to receive said signals and to control the ultrasonic wave generator based on the received signals for modulating a level of ultrasonic wave generation.