LINEAR MOTOR AIR-COOLING STRUCTURE

• US 20140103748A1
• Filed: 11/08/2012
• Published: 04/17/2014
• Est. Priority Date: 10/11/2012
• Status: Active Grant

• Current Assignee: Hiwin Mikrosystem Corp.
• Original Assignee: Hiwin Mikrosystem Corp.
• Inventors: CHANG, Yu-Jung, HUANG, Bo-Sheng, FAN, Chih-Kai
• Granted Patent: US 9,048,707 B2
• Time in Patent Office: Days
• US Class Current: 310/12.29
• CPC Class Codes: H02K 41/031 of the permanent magnet type
• CPC Class Codes: H02K 5/207 with openings in the casing specially adapted for ambient air
• CPC Class Codes: H02K 9/00 Arrangements for cooling or ventilating channels or ducts in parts of the magnetic circuit H02K1/20, H02K1/32; channels or ducts in or between conductors H02K3/22, H02K3/24

Abstract

A linear motor air-cooling structure includes two cooling sections. Each cooling section has an elongated board-shaped main body. The main body is attached to a lateral side of the stator of the linear motor. An air flow way is formed in the main body. The external air can be uniformly guided through the air flow way and distributed to every part of the linear motor. Accordingly, in operation, a better air-cooling effect is provided for the linear motor.

Claims

1. A linear motor air-cooling structure comprising:

at least one elongated stator having an elongated bed section and multiple magnetic sections sequentially arranged along a length of the bed section and fixedly disposed on one face of the bed section;

a mover positioned in adjacency to one side of the bed section, under the action of magnetic fields created by the adjacent magnetic sections, the mover being reciprocally movable along the length of the bed section; and

at least one cooling section having at least one main flow way and multiple bypass flow ways in communication with the main flow way, whereby the air flowing within the main flow way can be distributed to the respective bypass flow ways to flow out from the bypass flow ways so as to form airflow between the stator and the mover, the air-cooling structure being characterized in that the cooling section has a main body attached to one side of the stator along the length thereof, the main flow way and the bypass flow ways being disposed on the main body, each bypass flow way having an air outlet formed on the main body, the air outlet being directed to the mover in a direction away from the bed section.

2. The linear motor air-cooling structure as claimed in claim 1, wherein the main body is attached to a lateral side of the magnetic sections.

3. The linear motor air-cooling structure as claimed in claim 2, wherein an obtuse angle is contained between the lateral side of the magnetic sections, to which the main body is attached, and a plane face of the bed section, to which the magnetic sections are attached.

4. The linear motor air-cooling structure as claimed in claim 1, wherein the number of the stators is two and the stators are correspondingly spaced from each other in parallel to each other, the magnetic sections being positioned on the plane faces of the bed sections, which plane faces face each other.

5. The linear motor air-cooling structure as claimed in claim 4, wherein the number of the cooling sections is two and the cooling sections are respectively attached to lateral sides of the stators along the lengths thereof.

6. The linear motor air-cooling structure as claimed in claim 5, wherein the main bodies are respectively attached to the lateral sides of the corresponding magnetic sections.

7. The linear motor air-cooling structure as claimed in claim 6, wherein an obtuse angle is contained between the lateral side of the magnetic sections and the plane face of the bed section, to which the magnetic sections are attached.

8. The linear motor air-cooling structure as claimed in claim 7, wherein one end of the magnetic sections protrudes from one side of the bed section, to which the magnetic sections are attached.

9. The linear motor air-cooling structure as claimed in claim 1, wherein the main body includes a substrate and a cover board attached and connected to one face of the substrate, the main flow way and the bypass flow ways being formed between the substrate and the cover board.

10. The linear motor air-cooling structure as claimed in claim 1, wherein the magnetic sections are fixedly arranged on the bed section at equal intervals.

11. The linear motor air-cooling structure as claimed in claim 10, wherein the bypass flow ways serve to guide the airflow to flow through gaps between adjacent magnetic sections in a direction to the mover.