Linear motor cooling mechanism

• US 9,065,311 B2
• Filed: 11/09/2012
• Issued: 06/23/2015
• 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
• Primary Examiner(s): KENERLY, TERRANCE L
• Application Number:
  US13/672,879
• Publication Number:
  US 20140103749A1
• Time in Patent Office: 956 Days
• Field of Search: 310/12.29, 310/58, 310/59, 310/60.A
• US Class Current: 1/1
• CPC Class Codes: H02K 1/20 with channels or ducts for flow of cooling medium
• 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 cooling mechanism includes two cooling sections. Each cooling section is composed of multiple bypass heads, which are serially connected with each other. The cooling sections are additionally fixedly disposed on the linear motor. Each cooling section has a main flow way and multiple bypass flow ways in communication with the main flow way. External air is guided through the main flow way and distributed to the bypass flow ways so as to controllably flow toward the position of the mover of the linear motor for achieving an air-cooling heat dissipation effect.

Claims

1. A linear motor cooling mechanism 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 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 linear motor cooling mechanism being characterized in that the cooling section has multiple bypass heads serially connected with each other, the bypass heads being fixedly disposed on one side of the stator along the length thereof, the main flow way extending along an axis of the serially connected bypass heads in communication with the bypass flow ways, each bypass flow way being formed in a corresponding bypass head in communication with the main flow way to form an air outlet on one side of the bypass head;

wherein the magnetic sections are arranged on the bed section at equal intervals;

wherein the bypass heads are positioned in positions where gaps between the adjacent magnetic sections are positioned;

wherein each bypass head has a head body attached to one side of the bed section, a protrusion block protruding from one side of the head body and extending into the gap between two adjacent magnetic sections.

2. The linear motor cooling mechanism as claimed in claim 1, wherein one end of the magnetic sections protrudes from the side of the bed section and the head body attaches to the side of the bed section and one side of the correspondingly magnetic section in adjacency to the side of the bed section.

3. The linear motor cooling mechanism as claimed in claim 2, wherein the head body has a first attachment plane face and a second attachment plane face normal to each other and adjacent to each other, the first and second attachment plane faces respectively attaching to the side of the bed section and side of the correspondingly magnetic section in adjacency to the side of the bed section.

4. The linear motor cooling mechanism as claimed in claim 1, wherein the bypass flow way extends from the head body to the protrusion block to form the air outlet on a free end face of the protrusion block.

5. The linear motor cooling mechanism as claimed in claim 1, wherein the cooling section further has multiple tubular connection members bridged between the adjacent bypass heads to serially connect the bypass heads.