Heat storage tank

Abstract

A heat storage tank 10 comprises a plastic container 11 for storing engine cooling water, an inflow pipe 30 and an outflow pipe 31 communicating with the interior of plastic container 11 and formed to project from plastic container 11 , and a heat-insulating layer 13 arranged to cover the whole periphery of plastic container 11 to insulate the heat of the engine cooling water in plastic container 11. Heat-insulating layer 13 is arranged to cover the roots of pipes 30, 31. Therefore, the heat radiation of the engine cooling water from the bases of pipes 30, 31 can be suppressed thereby preventing a reduction in heat insulation effect.

1 . A heat storage tank comprising:
 a tank body for storing a fluid;   pipes communicating with the interior of the tank body and formed to project from the tank body; and   a heat-insulating layer arranged to cover the whole periphery of the tank body including the roots of the pipes and thus to insulate the heat of the fluid in the tank body.   
   
   
       2 . The heat storage tank according to  claim 1 ,
 wherein the tank body is formed of a synthetic resin material,   wherein an inner air blocking layer is formed on the outer surface of the tank body for preventing the air passage, wherein the heat-insulating layer is arranged on the outside of the inner air blocking layer,   wherein an outer air blocking layer is arranged so as to cover the heat-insulating layer for preventing the air passage, and   wherein the inner and outer air blocking layers are coupled to each other by the edges thereof, and the space between the inner and outer air blocking layers is hermetically closed.   
   
   
       3 . The heat storage tank according to  claim 2 , wherein joints for coupling the inner air blocking layer and the outer air blocking layer to each other are arranged on the outer periphery of the pipes. 
   
   
       4 . The heat storage tank according to  claim 3 , wherein the joints between the inner air blocking layer and the outer air blocking layer are arranged only on the outer periphery of the pipes. 
   
   
       5 . The heat storage tank according to  claim 1 ,
 wherein the pipes include a first pipe communicating with the interior of the tank body and formed in such a manner as to be projected from the tank body for supplying a fluid into the tank body, and a second pipe communicating with the interior of the tank body and formed in such a manner as to be projected from the tank body for discharging the fluid out of the tank body, and   wherein the tank body comprises a plurality of partition plates arranged therein so that the influent fluid from the first pipe flows out from the second pipe after flowing in zigzag in the tank body.   
   
   
       6 . The heat storage tank according to  claim 5 , wherein the pipes are arranged at the lower part of the tank body. 
   
   
       7 . The heat storage tank according to  claim 1 , wherein the heat-insulating layer has the heat conductivity of not more than 0.01 (kcal/hm ° C.). 
   
   
       8 . The heat storage tank according to  claim 1 , wherein the fluid is the engine cooling water of the automotive vehicle.