Cooler

Abstract

A cooler comprising a coolant space (R) which is in contact with a heat dissipator; an inflow-side coolant reservoir (Ri) which is in communication with one end of the coolant space (R) via an inflow-side narrowed portion (Rsi); and an outflow-side coolant reservoir (Ro) which is in communication with another end of the coolant space (R) via an outflow-side narrowed portion (Rso). By forming fins ( 22, 23 ) or a guide ( 24, 25 ) to stand upright in an area located near a downstream side end portion of the inflow-side coolant reservoir (Ri), the flow channel cross-sectional area is reduced and regulated, and the flow velocity of a coolant in this area is increased.

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . A cooler comprising:
 a coolant space through which a coolant flows;   an inflow-side coolant reservoir which is in communication with one end side of the coolant space via an inflow-side narrowed portion; and   an outflow-side coolant reservoir which is in communication with another end side of the coolant space via an outflow-side narrowed portion, wherein   the inflow-side coolant reservoir and the inflow-side narrowed portion are formed to extend in a first direction,   a coolant supplied to the inflow-side coolant reservoir flows along the first direction, flows through the coolant space via the inflow-side narrowed portion, and flows out to the outflow-side coolant reservoir via the outflow-side narrowed portion, and   a regulator is formed in an area located near a downstream side end portion of the inflow-side coolant reservoir, the regulator reducing and regulating a flow channel cross-sectional area to increase a flow velocity of the coolant in this area, wherein the regulator comprises pin fins.   
     
     
         4 . The cooler according to  claim 3 , wherein the pin fins are formed to be unevenly distributed toward the side with which the inflow-side narrowed portion is in communication. 
     
     
         5 . The cooler according to  claim 3 , wherein the pin fins have relatively large fin diameters on the side with which the inflow-side narrowed portion is in communication. 
     
     
         6 . The cooler according to  claim 3 , wherein the pin fins are formed at a relatively high density on the side with which the inflow-side narrowed portion is in communication. 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . The cooler according to  claim 3 , further comprising:
 a second regulator formed further upstream of the area located near the downstream side end portion, the second regulator reducing and regulating the flow channel cross-sectional area of the inflow-side coolant reservoir.   
     
     
         10 . The cooler according to  claim 9 , wherein the second regulator comprises fins formed along the first direction. 
     
     
         11 . The cooler according to  claim 9 , further comprising:
 a third regulator formed between the regulator and the second regulator, the third regulator reducing and regulating the flow channel cross-sectional area of the inflow-side coolant reservoir.   
     
     
         12 . The cooler according to  claim 11 , wherein the third regulator is a projection formed in the inflow-side coolant reservoir.