DE412494C - Secondary coil for electric soldering, welding and heating machines and furnaces - Google Patents

Description

The secondary coils mostly consisting of only one or only a few turns Heat-generating electrical machines, such as soldering, welding, heating and Melting machines, including soldering machines, have to be cooled very extensively in order to be able to use the to counteract the heat drawn from the heating point to the subsequent coil. The secondary coils of such machines are also affected by the resulting eddy currents already very warm in and of itself, and attempts have so far been made to avoid an impermissible To counteract increase in heating, fans blew air against the coils while the connections the coils or the electrodes to which they are attached Water circulation or compressed air were cooled. Also massive secondary coils with holes for internal water circulation are known ao

However, all of these methods are inadequate and are particularly effective in the case of large machines of high power consumption their purpose is very poor.

We have succeeded in finding a cooling system for secondary coils that meets the highest requirements is fair and whose effect is not even remotely achieved by any of the previously known methods.

ίο The secondary coil is used in whole or in their individual turns through a rubber hose, rubberized hemp hose or a hose made of other suitable material insulating material drawn. The hose ends at the connection contacts are air- and attached watertight. Water or air is then passed through these hoses pressed and so the coil or every single one of its turns over the entire winding length cooled by direct contact with the flowing water or the flowing air.

In the drawing the arrangement is shown, namely Fig. 1 and 2 represent the arrangement with a hose between two as primary coils, Fig. 3 and 4 the arrangement several parallel tubes above the primary coil. Figs. 5 and 6 show the type of Attachment to the connection contacts with the connection sleeves for the water or 30 Air supply.

Claims (1)

Patent Claim:
Secondary coil for electrical Solder, Welding and heating machines and melting furnaces, characterized in that they or their individual turns are inserted through a hose or hoses which are attached to the coil ends or connection contacts are so tightly attached that a cooling liquid, mainly water, but also compressed air, for Purposes of effective cooling of the conductor can be pressed through. Fig. Fig. Fig. Fig. ₃ . Fig. L. ι I. Fig. 6.