Air Compressor of Water Injection Type
AssigneeHitachi Industrial Equipment Systems Co., Ltd.
InventorsTakehiro MATSUZAKA, Hiroshi Ohta
Life of this patent
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Abstract
In a water injection air compressor including a compressor main body for compressing air, a water-feed line for feeding water to an actuation chamber in the compressor main body, an air release valve for releasing the compressed air from the compressor main body, and a control panel for executing an on-load operation mode in which water is fed into the actuation chamber and an air release valve is closed and a no-load operation mode in which the water is fed into the actuation chamber and the air release valve is opened, wherein the control panel further executes a dry operation mode in which the water is prevented from being fed into the actuation chamber and with the air release valve is opened.
Claims12
An air compressor of water injection type, comprising, a compressor body including an actuation chamber to compress air in the actuation chamber, a water feed line for supplying water into the actuation chamber, an air release valve for discharging the compressed air from the actuation chamber, and a controller for controlling the water feed line and the air release valve to select one of an on-load operation mode in which the water is supplied into the actuation chamber through the water feed line while preventing the compressed air from being discharged from the actuation chamber through the air release valve and a no-load operation mode in which the water is supplied into the actuation chamber through the water feed line while allowing the compressed air to be discharged from the actuation chamber through the air release valve,
- wherein the controller is capable of controlling the water feed line and the air release valve to execute, as substitute for the no-load operation mode and the on-load operation mode, a dry operation mode in which the water is prevented from being supplied into the actuation chamber through the water feed line while allowing the compressed air to be discharged from the actuation chamber through the air release valve.
Dependencies are inferred from the claim text.