Cooling water control valve device

• Main Authors: SATO KAZUKI, TSUCHIYA TORU, DAIKUHARA MASAYUKI
• Format: Patent
• Language: English
• Published: 11.03.2015
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; DEVICES FOR VENTING OR AERATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

Provided is a cooling water control valve device using a rotary valve which is able to reduce jamming by foreign matter and which enables the rotor to rotate even if foreign matter becomes jammed. In an engine cooling system including a main flow path (4) connecting an engine (1) and a radiator (3), a cooling water control valve device (10) controlling the flow rate of cooling water in the main flow path (4) includes a rotary main valve (11). The main valve (11) includes a rotor (12) and a casing (20) having an inner circumferential surface opposing the outer circumferential surface of the rotor (12). Space is formed between the outer circumferential surface of the rotor (12) and the inner circumferential surface of the casing (20). A main opening (30) leading to the main flow path (4) is provided in the inner circumferential surface of the casing (20), and a sealing member is provided in the main opening (30) which protrudes towards and comes into contact with the outer circumferential surface of the rotor (12). The sealing member constitutes a flow path connecting the opening in the rotor (12) to the opening in the casing (20).