Patent ID: 7926551

Claim:
A heater core comprising: first and second tanks which are spaced apart from each other at a predetermined distance; an inlet pipe and an outlet pipe which are respectively connected to the first tank or second tank and through which cooling water is introduced and discharged; a plurality of tubes of which both ends are respectively fixed between the first and second tanks; fins which are provided between the tubes; and a flow rate adjusting means wherein the flow rate adjusting means includes: a hollow body, including a cooling water introduction part, through which cooling water is introduced, connected to one side thereof and bypass lines vertically formed at both sides of the cooling water introduction part, respectively, to discharge the cooling water not passing through the inlet pipe and the heater core; a cover airtightly covering the body; a ball valve provided in the body having a driving shaft connected to a center portion thereof and formed with first and second communication parts vertically connected to each other to control an amount of the cooling water introduced into the cooling water introduction part and discharged through the bypass line and an amount of the cooling water introduced into the inlet pipe of the heater core by rotation; and a driving means driving the ball valve, and wherein in a state that the heater core is installed at an air conditioner, the outlet pipe is positioned at an upper side from the flow rate adjusting means, and the outlet pipe is connected to the bypass line so as to be stepped, or to form an acute angle therebetween.