Heat sink for a linear motor

Patent metadata

Field	Value
Publication number	US-9777972-B2
Application number	US-201414894175-A
Country	US
Kind code	B2
Filing date	Apr 3, 2014
Priority date	May 27, 2013
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A heat sink for the primary part of a linear motor includes a coil system having at least one coil that is to be energized when the motor is in operation, the heat sink being provided for accommodating the coil system of the primary part and forming at least one duct, through which a coolant is flowing during the operation of the heat sink, and at least one intake as well as at least one outlet for the coolant. The heat sink is arranged as an integrally formed component, which has an interface for connecting an object to be moved with the aid of the primary part, the interface having a contact surface via which the object to be moved is able to be brought into contact with the heat sink, and which is arranged and provided for cooling both the coil system of the primary part and the contact surface, such that coolant supplied to the heat sink through an intake is used for cooling the coil system and the contact surface.

First claim

What is claimed is:

1. A heat sink for a primary part of a linear motor having a planar coil system that includes at least one coil energized when the motor is in operation, comprising:
at least one duct through which coolant flows during operation of the heat sink;
at least one inlet and at least one outlet for the coolant;
an interface adapted to connect to an object to be moved by the primary part, the interface having a contact surface adapted to contact the object; and
a flat cooling plate adapted to contact the coil system across a large surface area to cool the coil system;
wherein the heat sink is adapted to accommodate the coil system;
wherein the heat sink is arranged as an integrally formed component and is adapted to cool the coil system and the contact surface by the coolant supplied to the heat sink through the intake; and
wherein the heat sink configured such that coolant entering the heat sink is used first to cool the contact surface and then to cool the coil system.

2. The heat sink according to claim 1 , wherein the heat sink is arranged as a single-piece, 3D printed component.

3. The heat sink according to claim 1 , wherein the heat sink is formed of (a) a metal and/or (b) titanium.

4. The heat sink according to claim 1 , wherein the heat sink includes a single intake and a single outlet.

5. The heat sink according to claim 1 , further comprising a separated connection component premolded in one piece on the heat sink in a region of the intake and in a region of the outlet, the connection connectable to (a) a supply line for the coolant and/or (b) a discharge line for the coolant.

6. The heat sink according to claim 1 , further comprising fastener components premolded on the heat sink adapted to attach to the coil system.

7. The heat sink according to claim 1 , wherein the heat sink includes an intake region provided with an intake for the coolant, and includes an outlet region provided with an outlet for the coolant.

8. The heat sink according to claim 1 , wherein the intake region and the outlet region extend longitudinally along one direction and are arranged at a distance from each other.

9. The heat sink according to claim 8 , further comprising a material that (a) does not conduct heat and/or (b) conducts heat poorly is arranged between the intake region and the outlet region of the heat sink.

10. The heat sink according to claim 1 , wherein the ducts of the heat sink form a plurality of cooling loops, each loop adapted to cool (a) one coil or (b) two coils arranged opposite each other on both sides of individual cooling loops, the ducts being connected to the intake region and outlet region of the heat sink such that a coolant introduced into the heat sink flows through adjacent ducts in opposite directions.

11. The heat sink according to claim 10 , wherein the ducts branch off by a first end section substantially perpendicularly from the intake region of the heat sink and discharge with a second end section substantially perpendicularly into the outlet region of the heat sink.

12. The heat sink according to claim 1 , wherein the ducts of the heat sink form a plurality of cooling loops, each loop adapted to cool (a) one coil or (b) two coils arranged opposite each other on both sides of individual cooling loops.

13. The heat sink according to claim 12 , wherein the ducts branch off by a first end section substantially perpendicularly from the intake region of the heat sink and discharge with a second end section substantially perpendicularly into the outlet region of the heat sink.

14. A linear motor, comprising:
a primary part including a coil system having at least one coil electrically energizable during operation of the linear motor, an interface connectable to an object to be moved by the linear motor, and a heat sink according to claim 1 on which the coil system is fixed in place.

Assignees

• Etel Sa

Inventors

• Da Conceição Rosa André-Rafael

Classifications

• F28D15/00

  Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls {; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies (F28D17/00, F28D19/00, F28D20/00 take precedence)} · CPC title

• F28F13/06 Primary

  by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} · CPC title

• H02K41/031

  of the permanent magnet type · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• H02K3/47

  Air-gap windings, i.e. iron-free windings · CPC title