Control valve and cooling system for vehicle including the same

1 . A control valve, comprising:

a valve housing;

a first inlet port on the valve housing and through which a coolant is drawn;

a second inlet port on the valve housing and through which the coolant is drawn;

a first outlet port on the valve housing and through which the coolant is discharged;

a second outlet port on the valve housing and through which the coolant is discharged;

a ball valve rotatably disposed within the valve housing, and configured to either a) fluidically communicate the first inlet port and the first outlet port, and to fluidically communicate the second inlet port and the second outlet port, or b) to fluidically communicate the first inlet port and the second outlet port and fluidically communicate the second inlet port and the first outlet port;

an adapter coupled to the valve housing, and having a penetration hole through which the rotation shaft of the ball valve penetrates;

a driving unit housing connected to the adapter;

a driving unit provided in an interior of the driving unit housing, coupled to the rotation shaft, and configured to provide power to rotate the ball valve;

at least one drain chamber on an upper surface of the driving unit housing; and

a plurality of drain lines on the upper surface of the driving unit housing and fluidically communicating with the drain chamber, wherein each of the plurality of drain lines has a different length;

wherein the coolant leaking through the penetration hole of the adapter is temporarily stored in the at least one drain chamber of the driving unit housing, and is discharged to an exterior of the driving unit housing through the at least one drain line when the a leaked amount of the coolant exceeds a capacity of the drain chamber.

2 . The control valve of claim 1 , wherein the ball valve comprises:

a valve body having a partially spherical shape;

a rotation shaft extending from the valve body;

a first port, a second port, and a third port on a side surface of the valve body;

a fourth port on an upper surface of the valve body;

a first connection line fluidically connecting the first port and the second port; and

a second connection line fluidically connecting the third port and the fourth port,

wherein the first connection line either fluidically connects the first inlet port and the first outlet port, or fluidically connects the second inlet port and the first outlet port; and

wherein the second connection line either fluidically connects the first inlet port and the second outlet port, or fluidically connects the second inlet port and the second outlet port.

3 . The control valve of claim 2 , wherein the first connection line is spaced apart from the rotation shaft in a radial direction by a preset interval, and is along the radial direction from a first side surface to a second side surface of the valve body.

4 . The control valve of claim 2 , wherein the second connection line extends from the side surface of the valve body toward the upper surface of the valve body.

5 . The control valve of claim 2 , wherein a stopper protrusion is on a lower surface of the valve body.

6 . The control valve of claim 5 , wherein a limiter that the stopper protrusion contacts is in the adapter in order to limit rotation of the ball valve.

7 . The control valve of claim 2 , wherein the first port to the third port are disposed around the rotation shaft to form an obtuse angle with respect to each other.

8 . The control valve of claim 1 , wherein the drain chamber comprises the plurality of drain lines around the rotation shaft along a circumferential direction.

9 . The control valve of claim 1 , wherein at least one bypass chamber corresponding to the drain chamber is on a lower surface of the adapter.

10 . The control valve of claim 1 , further comprising an integrated electric water pump configured to pump the coolant discharged through the second outlet port.

11 . A cooling system for a vehicle including the control valve of claim 1 , the cooling system comprising:

a first cooling line through which the coolant flows and on which a battery, a heater, and a chiller are positioned; and

a second cooling line through which the coolant flows and on which a condenser, a radiator, a reservoir tank, and an electric water pump are positioned;

wherein the control valve is positioned between the first cooling line and the second cooling line; and

wherein, depending on an operation of the control valve, either the first cooling line and the second cooling line are fluidically connected, or the first cooling line and the second cooling line are fluidically separated.