Control valve for cooling circuit
AssigneeValeo Thermique Moteur
InventorsMatthieu Chanfreau, Daniel Virey
Life of this patent
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Abstract
A control valve suitable for forming part of a cooling circuit comprising a first branch which contains a radiator and a second branch that constitutes a bypass of a radiator is described. The control valve has a third branch, which, in a motor vehicle combustion engine cooling circuit, has at least one unit heater for heating the vehicle cabin.
Claims12
A control valve suitable for forming part of a cooling circuit of a motor vehicle combustion engine, the circuit being traversed by a cooling fluid and comprising a first branch (70) which contains the radiator (72) for cooling the engine (62), a second branch (76) which constitutes a bypass of the engine cooling radiator (72), and one or more third branches (78) which each contain at least one unit heater (80) for heating the cabin,
- wherein the valve (10) comprises a body having a fluid inlet (28), a first outlet (18) connected to the second branch (76), a second outlet (20) connected to the first branch (70) and at least one third outlet (22), connected to the third branch or branches (78), as well as an adjustment member (34) mounted rotatably in the valve body so as to selectively control the outlets (18, 20, 22), and wherein the adjustment member (34) is suitable for taking in succession at least the following positions when it is rotated in a given direction:
- a “bypass” position (P1), at which the first outlet (18) is open;
- a “radiator+bypass” position (P2;
- P3), at which the first outlet (18) and the second outlet (20) are open;
- a “radiator” position (P9;
- P10′), at which the second outlet (20) is open;
- a “radiator+unit heater” position (P4;
- P10), at which the second outlet (20) and the third outlet (22) are open;
- a “radiator+bypass+unit heater” position (P6;
- P7), at which the first outlet (18), the second outlet (20) and the third outlet (22) are open;
- a “unit heater+bypass” position (P5), at which the first outlet (18) and the third outlet (22) are open;
- and
- a “unit heater” position (P5′;
- P8), at which the third outlet (22) is open,
- wherein the adjustment member is suitable for furthermore taking a “zero flow rate” position (P10), at which no outlet is open.
A control valve suitable for forming part of a cooling circuit of a motor vehicle combustion engine, the circuit being traversed by a cooling fluid and comprising a first branch (70) which contains the radiator (72) for cooling the engine (62), a second branch (76) which constitutes a bypass of the engine cooling radiator (72), and one or more third branches (78) which each contain at least one unit heater (80) for heating the cabin,
- wherein the valve (10) comprises a body having a fluid inlet (28), a first outlet (18) connected to the second branch (76), a second outlet (20) connected to the first branch (70) and at least one third outlet (22) connected to the third branch or branches (78), as well as an adjustment member (34) mounted rotatably in the valve body so as to selectively control the outlets (18, 20, 22), and wherein the adjustment member (34) is suitable for taking in succession at least the following positions when it is rotated in a given direction:
- a “bypass” position (P1), at which the first outlet (18) is open;
- a “radiator+bypass” position (P2;
- P3), at which the first outlet (18) and the second outlet (20) are open;
- a “radiator” position (P9;
- P10′), at which the second outlet (20) is open;
- a “radiator+unit heater” position (P4;
- P10), at which the second outlet (20) and the third outlet (22) are open;
- a “radiator+bypass+unit heater” position (P6;
- P7), at which the first outlet (18), the second outlet (20) and the third outlet (22) are open;
- a “unit heater+bypass” position (P5), at which the first outlet (18) and the third outlet (22) are open;
- and
- a “unit heater” position (P5′;
- P8), at which the third outlet (22) is open, and wherein the body (12) comprises a cylindrical lateral wall (16) into which the fluid outlets (18, 20, 22) run at axial heights and at angular positions that are chosen with respect to the axis of rotation (XX) of the adjustment member (34), while the fluid inlet (28) runs axially into the body (12) and the adjustment member (34) is embodied in the form of a hollow cylinder comprising through-openings (40, 46, 48) suitable for controlling the fluid outlets (18, 20, 22) as a function of an angular position of the adjustment member (34) with respect to the body (12).
Dependencies are inferred from the claim text.