| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase a total refrigerant circulation amount as much as possible while downsizing a cooling device for an engine 1 using two thermostats 30, 40 and to relatively easily control the two thermostats 30, 40 based on a temperature of a refrigerant without electronically controlling opening/closing operation of the thermostats. <P>SOLUTION: The two thermostats 30, 40 close communication holes 214, 215 of a partition 213 in first valves 33, 43 when a temperature of the refrigerant in an upper chamber 24 is less than a predetermined temperature and simultaneously open a second inlet 223 in second valves 35, 45. While, when the temperature of the refrigerant is the predetermined temperature of higher, the thermostats open the communication holes 214, 215 and simultaneously close the second inlet 223. The upstream side thermostat 30 is arranged on a predetermined angle position on a circumference relative to a virtual straight line 102 where a central position 101 of an opening start area 100 of the first valve 33 passes through centers of the two communication holes 214, 215. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
