RADIATOR FOR ENGINE COOLING WATER

• Main Authors: GO TAKASHI, AMAGISHI KAZUTOSHI
• Format: Patent
• Language: English
• Published: 08.10.1992
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; BLASTING; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; HANDLING THIN OR FILAMENTARY MATERIAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STEAM ENGINES; STORING; TRANSPORTING; WEAPONS

PURPOSE:To prevent generation of cavitation so as to improve reliability by providing a float vertically movable in accordance with the fluctuation of the cooling water level in a float chamber and a seal member for closing between a connection port and the float moved downward. CONSTITUTION:A radiating heat exchanger 2 for engine cooling water and an auxiliary tank 3 connected to a water supply port 9a of this heat exchanger 2 are provided. There are provided between these water supply port 9a and auxiliary tank 3 a pressure valve 7 opened when a pressure in a cooling water passage 4 is increased to a preset pressure higher than the atmospheric pressure or more and a negative pressure valve 8 opened when the pressure is decreased lower than the atmospheric pressure. An air vent valve 20 is provided in the highest position of a cooling water pipe 4, having a rise/fall, connecting an engine 1 to a heat exchanger 3. This air vent valve 20 opens/closes an air discharge port 25 by a float 23 vertically moved by fluctuating a cooling water level in a float chamber 22. In the case of moving the float 23 downward by contracting the cooling water due to a temperature fall, air is prevented from advancing into the cooling water pipe from a connection port 21 by a seal member 30.