FIBER LASER OSCILLATOR, FIBER LASER PROCESSING DEVICE, AND FIBER LASER OSCILLATOR DEHUMIDIFICATION METHOD

• US 20150333467A1
• Filed: 04/05/2013
• Published: 11/19/2015
• Est. Priority Date: 04/16/2012
• Status: Active Grant

• Current Assignee: Amada Company Limited
• Original Assignee: Amada Company Limited
• Inventors: TANAKA, Keishi, SAKO, Hiroshi, MORINO, Asami
• Granted Patent: US 9,548,583 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01S 3/027 comprising a special atmosphere inside the housing
• CPC Class Codes: H01S 3/0404 Air- or gas cooling, e.g. by dry nitrogen
• CPC Class Codes: H01S 3/0407 Liquid cooling, e.g. by water
• CPC Class Codes: H01S 3/06704 Housings; Packages
• CPC Class Codes: H01S 3/2383 Parallel arrangements

Abstract

A fiber laser processing device includes: an air purge unit having a low-dew-pointizer section for changing compressed air for purging supplied from the exterior into dry air with a low dew point by means of a gas separation membrane module; a fiber laser oscillator having a combiner for combining and emitting the laser lights respectively outputted from the plurality of fiber laser modules to the exterior, and a distributor for distributing and supplying the dry air respectively to the plurality of fiber laser modules; and a laser processing machine for carrying out laser machining on a workpiece by means of the laser lights emitted from the combiner.

Claims

1. A fiber laser oscillator comprising:

a plurality of fiber laser modules outputting laser lights;

a combiner for combining and emitting the laser lights respectively outputted from the plurality of fiber laser modules to the exterior;

a low-dew-pointizer section for changing compressed air for purging supplied from the exterior into dry air with a low dew point by means of a gas separation membrane module; and

a distributor for distributing and supplying the dry air respectively to the plurality of fiber laser modules.

2. The fiber laser oscillator of claim 1, further comprising:

a chassis for housing the plurality of fiber laser modules; and

a cooler for dehumidifying a space in the chassis.

3. The fiber laser oscillator of claim 1, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.

10. The fiber laser oscillator of claim 2, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.

4. A fiber laser processing device comprising:

an air purge unit having a low-dew-pointizer section for changing compressed air for purging supplied from the exterior into dry air with a low dew point by means of a gas separation membrane module;

a fiber laser oscillator having a combiner for combining and emitting the laser lights respectively outputted from the plurality of fiber laser modules to the exterior, and a distributor for distributing and supplying the dry air respectively to the plurality of fiber laser modules; and

a laser processing machine for carrying out laser machining on a workpiece by means of the laser lights emitted from the combiner.

5. The fiber laser processing device of claim 4, further comprising:

a chassis for housing the plurality of fiber laser modules; and

a cooler for dehumidifying a space in the chassis.

6. The fiber laser processing device of claim 4, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.

11. The fiber laser processing device of claim 5, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.

7. A dehumidifying method for a fiber laser oscillator comprising a plurality of fiber laser modules outputting laser lights and a combiner for combining and emitting the laser lights respectively outputted from the plurality of fiber laser modules to the exterior, the dehumidifying method comprising:

a dry air generation step of changing compressed air for purging supplied from the exterior into dry air with a low dew point by means of a gas separation membrane module; and

a dry air supply step of distributing and supplying the dry air respectively to the plurality of fiber laser modules.

8. The dehumidifying method for the fiber laser oscillator of claim 7, wherein the fiber laser oscillator further comprises a chassis for housing the plurality of fiber laser modules and a cooler for dehumidifying a space in the chassis,

wherein a dehumidifying step of dehumidifying a space in the chassis is executed in parallel with the dry air supply step.

9. The dehumidifying method for the fiber laser oscillator of claim 7, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.

12. The dehumidifying method for the fiber laser oscillator of claim 8, wherein the dew point under atmospheric pressure of the dry air is −

40 degrees C. or lower.