Apparatus for a welding machine having a cooling assembly mounted to a mid-plane baffle for improved cooling within the welding machine

• US 6,803,541 B2
• Filed: 05/15/2002
• Issued: 10/12/2004
• Est. Priority Date: 05/15/2002
• Status: Expired due to Fees

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Werba, David A., Andersen, Bryan P.
• Primary Examiner(s): Shaw, Clifford C.
• Application Number:
  US10/063,816
• Publication Number:
  US 20030213789A1
• Time in Patent Office: 881 Days
• Field of Search: 219/130.1, 219/130.31, 219/130.32, 219/130.33, 219/130.5, 219/137.PS, 219/136, 361/695
• US Class Current: 219/130.1
• CPC Class Codes: B23K 37/003 Cooling means
• CPC Class Codes: B23K 9/10 Other electric circuits therefor; Protective circuits; Remote controls
• CPC Class Codes: B23K 9/1006 Power supply
• CPC Class Codes: B23K 9/32 Accessories earthing connections H01R
• CPC Class Codes: H05K 7/20909 Forced ventilation, e.g. on heat dissipaters coupled to components

Abstract

A mid-plane baffle or plate having a fan mounted thereto to dissipate heat within a welding machine is provided. By centrally positioning a baffle and mounting a circulating fan thereto, cooling efficiency is improved thereby enabling more direct cooling of the internal components of the welding machine. The baffle also reduces the critical volume of the welding machine and allows the fan to operate more efficiently and pull an increased amount of cooler ambient air through the machine which creates a greater cooling effect during the cooling cycle of the machine. The baffle placement also improves welding start performance by operating as a barrier between the high frequency/high voltage components and the PC board (control electronics) of the welding machine. The baffle also improves flexibility of component placement within the welding machine.

Claims

1. A welding apparatus comprising:

a housing defined by a first and a second panel, a base plate, and a top cover plate;

a baffle extending from the first panel to the second panel, the baffle being disposed within the housing to define a top compartment and a bottom compartment within the housing;

a sectioning plate extending from one of the base plate and the top cover plate to the baffle; and

a fan configured to dissipate heat within the housing, the fan being supported by the baffle.

2. The welding apparatus of claim 1 wherein the baffle includes an orifice defined to receive the fan to dissipate heat within the housing.

3. The welding apparatus of claim 2 wherein the orifice is disposed in the baffle such that the fan circulates air in the top compartment and the bottom compartment.

4. The welding apparatus of claim 3 further comprising a transformer assembly, a rectifier assembly, a heat sink, and a stabilizer assembly disposed in the bottom compartment.

5. The welding apparatus of claim 1 wherein the baffle includes a mid-plane cross plate formed of sheet metal.

6. A welding machine comprising:

a front panel and a back panel;

a base plate and a top plate connecting the front panel and the back panel to form a housing;

a cross plate parallel to the base plate and the top plate such that the cross plate defines a first volume and a second volume within the housing;

a fan assembly supported by the cross plate to circulate air in the first and the second volumes; and

a box disposed in the second volume, the box being defined by a pair of sectioning plates.

7. The welding machine of claim 6 wherein the cross plate includes an orifice configured to receive the fan assembly such that the fan simultaneously circulates air in the first volume and the second volume.

8. The welding machine of claim 7 wherein the fan assembly is oriented parallel to the base plate and the top plate.

9. The welding machine of claim 6 further comprising at least a transformer assembly, a heat sink, a rectifier assembly, and a stabilizer assembly disposed in the second volume.

10. The welding machine of claim 9 wherein the transformer assembly is disposed in the box.

11. The welding machine of claim 6 incorporated into at least one of a phase controlled TIG welder, an inverter controlled TIG welder, and a hybrid phase controlled/inverter controlled TIG welder.

12. A method of manufacturing a welding machine with improved cooling efficiency, the method comprising the steps of:

connecting a first panel and a second panel to opposite ends of a base plate;

connecting a baffle plate having an opening parallel to the base plate such that the baffle plate generally bisects a height of each panel to form a first volume and a second volume;

connecting at least one sectioning plate between the baffle plate and the base plate;

positioning a fan in the baffle plate opening, the fan being configured to circulate air in the first and the second volumes; and

connecting a cover plate between the first panel and the second panel.

13. The method of claim 12 wherein the at least one sectioning plate comprises at least one pair of sectioning plates.

14. The method of claim 13 wherein the step of connecting the pair of sectioning plates includes the step of positioning the sectioning plates to be orthogonal to the baffle plate.

15. The method of claim 14 further comprising the step of defining a first sub-volume and a second sub-volume in the second volume with the connection of the pair of sectioning plates.

16. The method of claim 15 further comprising the step of positioning an HF transformer assembly in the first sub-volume and a heat sink and rectifier assembly in the second sub-volume.

17. A welding-type apparatus comprising:

a housing defined by a first and a second panel, a base plate, and a top cover plate;

a plurality of welding-type sockets disposed in the first panel, each welding-type socket configured to receive a welding-type component connector;

a plate extending from the first panel to the second panel, the plate being disposed within the housing to define a top compartment and a bottom compartment within the housing; and

at least one orifice formed in the plate to allow air communication between at least one of the top and the bottom compartment.

18. The welding-type apparatus of claim 17 further comprising a lifting eye to support lifting thereof.

19. The welding-type apparatus of claim 18 wherein the lifting eye is integrally formed with a frame support extending from the base plate.

20. The welding-type apparatus of claim 17 further comprising a plurality of wheels operationally supported by the base plate.

21. The welding-type apparatus of claim 17 wherein the at least one orifice is sized to receive a fan assembly designed to draw cooling air from the top compartment and deliver the cooling air to the bottom compartment.

22. A welding apparatus comprising:

a housing having a pair of panels connected to a base and a cover;

a baffle connected to the pair of panels and bisecting the housing so as to define a top volume and a bottom volume within the housing, the baffle having a fan assembly mounted thereto such that the fan assembly is situated co-planer with the baffle; and

a high frequency transformer assembly mounted within the bottom volume.

23. The welding apparatus of claim 22 further comprising at least one of a stabilizer assembly and a heat sink and rectifier assembly mounted within the bottom volume.