ENGINE COOLING SYSTEM AND MOTOR THEREFORE

• US 20100072851A1
• Filed: 09/18/2009
• Published: 03/25/2010
• Est. Priority Date: 09/19/2008
• Status: Active Grant

• Current Assignee: Johnson Electric SA 125 Rue de Progres La Chaux de Fonds Switzerland (Johnson Electric Holdings Limited)
• Original Assignee: Johnson Electric SA 125 Rue de Progres La Chaux de Fonds Switzerland (Johnson Electric Holdings Limited)
• Inventors: Arucci, Gianpaolo, Qin, Rui Feng, Jing, Yi, Guan, Xin Hui
• Granted Patent: US 8,242,655 B2
• Time in Patent Office: Days
• US Class Current: 310/158
• CPC Class Codes: F01P 2005/046 with electrical pump drive
• CPC Class Codes: H02K 13/04 Connections between commutator segments and windings
• CPC Class Codes: H02K 23/26 characterised by the armature windings
• CPC Class Codes: H02K 3/02 Windings characterised by the conductor material

Abstract

An engine cooling system, comprising a fan unit, cooling pipes and a coolant tank, the coolant tank, the cooling pipes and cooling channels of the engine being connected together and forming a cooling cycle, the fan unit being used to cool the cooling pipes and the coolant therein; wherein the fan unit comprises a motor and fan blades driven by the motor, the motor comprising a stator and a rotor rotatable mounted confronting the stator; the rotor comprising a shaft, a commutator fitted to the shaft, a rotor core fitted to the shaft adjacent to the commutator, windings wound about teeth of the rotor core and electrically connected to segments of the commutator; the windings being wound by aluminium cored wire that has a electrical insulation film around its peripheral surface.

Claims

1. An engine cooling system, comprising a fan unit, cooling pipes, cooling channels of the engine and a coolant tank, the coolant tank, the cooling pipes and the cooling channels of the engine being connected together and forming a cooling circuit, the fan unit being used to cool the cooling pipes and coolant therein, the fan unit comprising a motor and fan blades driven by the motor;

wherein the motor comprises a stator and a rotor rotatable mounted confronting the stator;

the rotor comprising a shaft, a commutator fitted to the shaft, a rotor core fitted to the shaft adjacent to the commutator, windings wound about teeth of the rotor core and electrically connected to segments of the commutator;

the windings being formed from aluminium cored wire that has an electrical insulation film around its peripheral surface.

2. The engine cooling system of claim 1, wherein each of the segments comprises a hook at one end, the hook having tin coating to electrically connect to lead wires of the windings.

3. The engine cooling system of claim 2, wherein the surface of the hook is concave and forms an increased space for accommodating the lead wire(s) of the windings.

4. The engine cooling system of claim 1, wherein the windings comprise a plurality of coils, each of the coils being wound about one tooth of the rotor core.

5. The engine cooling system of claim 1, wherein the windings comprise a plurality of coils, each of the coils being wound about two or more teeth of the rotor core.

6. The engine cooling system of claim 1, wherein the electrical insulation film comprises two insulation layers.

7. A motor used in an engine cooling system, the engine cooling system comprising fan blades driven by the motor to cooling an engine, wherein the motor comprises a stator and a rotor rotatable mounted confronting the stator;

the rotor comprising a shaft, a commutator fitted to the shaft, a rotor core fitted to the shaft adjacent to the commutator, windings wound about teeth of the rotor core and electrically connected to segments of the commutator;

the windings being formed from aluminium cored wire that has a electrical insulation film around its peripheral surface.

8. The motor of claim 7, wherein each of the segments comprises a hook at one end, the hook having tin coating to electrically connect to lead wires of the windings.

9. The motor of claim 8, wherein each lead wire of the windings is soldered to a corresponding hook.

10. The motor of claim 8, wherein the soldered lead wires and hooks are encapsulated by a protective film.

11. The motor of claim 7, wherein the electrical insulation film comprises two insulation layers.

12. The motor of claim 7, wherein the aluminium cored wire is copper clad aluminium wire.