Engine driven welder

A welding machine, comprising:

• an enclosure;
• a welding power supply mounted in an electronics compartment within the enclosure;
• a divider wall that at least partially defines an engine compartment of the welding machine rearward of the electronics compartment;
• a generator operatively connected to the welding power supply to supply electrical energy to the welding power supply;
• an internal combustion engine located within the engine compartment and configured to drive the generator;
• a muffler;
• an engine-cooling fan coupled to the engine for drawing a first cooling air flow into the enclosure;
• a generator-cooling fan coupled to the generator for drawing a second cooling air flow into the enclosure;
• a first recessed side vent in fluid communication with the electronics compartment and recessed in a first lateral side of the enclosure, and a first recessed air channel formed by the first lateral side of the enclosure and extending rearward from the first recessed side vent along the engine compartment;
• a second recessed side vent in fluid communication with the electronics compartment and recessed in a second lateral side of the enclosure, and a second recessed air channel formed by the second lateral side of the enclosure and extending rearward from the second recessed side vent along the engine compartment;
• a further vent in fluid communication with the generator;
• and
• a baffle located in the engine compartment adjacent to the muffler,
• wherein the engine-cooling fan draws the first cooling air flow forward through the first and second recessed side vents and into the electronics compartment, and downward through the electronics compartment and into the engine compartment thereby cooling each of the welding power supply, the engine, and the muffler, and the generator-cooling fan draws the second cooling air flow into the enclosure through the further vent, and
• wherein the baffle directs the second cooling air flow away from the muffler.

An electrical power generation apparatus, comprising:

• an arc generation power supply mounted in an electronics compartment of the apparatus;
• a generator operatively connected to the arc generation power supply to supply electrical energy to the arc generation power supply;
• an internal combustion engine configured to drive the generator;
• an enclosure including a chassis structure comprising a divider wall that at least partially defines an engine compartment of the welding machine;
• a cantilevered engine-mounting shelf cantilevered from the divider wall, wherein the internal combustion engine is attached to the cantilevered engine-mounting shelf;
• a fuel tank mounted within the chassis structure and located beneath each of the cantilevered engine-mounting shelf, the internal combustion engine, and the generator;
• an engine-cooling fan coupled to the internal combustion engine for drawing a cooling air flow into the enclosure;
• a recessed side vent in fluid communication with the electronics compartment and recessed in a lateral side of the enclosure, wherein the engine-cooling fan draws cooling air forward through the recessed side vent and into the electronics compartment, and downward through the electronics compartment and into the engine compartment;
• and a vibration isolator that isolates the cantilevered engine-mounting shelf from the divider wall, wherein the internal combustion engine and cantilevered engine-mounting shelf apply a radial load to the vibration isolator.