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US09024228B2 Plasma cutting device, plasma torch, and cooling device for plasma torch 有权
等离子切割装置，等离子体焰炬和等离子体焰炬的冷却装置

Plasma cutting device, plasma torch, and cooling device for plasma torch
Abstract:
In order to increase the flow rate of coolant liquid supplied to the nozzle (88) of a plasma torch (10) and to extend the life of the plasma torch (10), within the plasma torch (10), an electrode coolant liquid passage (60, 84, 85, 86, and 64) which supplies coolant liquid to an electrode (80), and a nozzle coolant liquid passage (56, 70, 92, 72 and 68) which supplies coolant liquid to the nozzle (88), are provided separately as independent coolant liquid passages which extend in parallel, and which are mutually electrically insulated from one another. Moreover, the flow rate of coolant liquid in the nozzle coolant liquid passage is greater than the flow rate of coolant liquid in the electrode coolant liquid passage.
Abstract(Chinese):

为了增加供应到等离子体焰炬（10）的喷嘴（88）的冷却剂液体的流量并延长等离子体焰炬（10）的寿命，等离子体焰炬（10）内的电极冷却剂液体通道 （80）的冷却液供给部（60,84,85,86,64）以及向喷嘴（88）供给冷却剂液体的喷嘴冷却剂液体通路（56,70,92,72,68） 独立地设置为独立的冷却剂液体通道，其平行延伸并且彼此相互电绝缘。 此外，喷嘴冷却剂液体通道中的冷却剂液体的流量大于电极冷却剂液体通道中的冷却剂液体的流量。

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