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Cooling device for gases occurring in installation equipment

A cooling device and equipment technology, applied in emergency protection devices, electrical components, parts of protection switches, etc., can solve the problems of particle blockage, difficulty in arc return, and vulnerability.

Active Publication Date: 2015-07-22
EATON ELECTRICAL IP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this complex flow guidance (and multiple deflections) and delicate structure, the flow channels in the fine-grained cooling network (EP 0817223 A1) can be blocked by particles in the exhaust gas and damage the network
[0007] DE 1640265 A1 shows a cascade cooling arrangement in which several plates are arranged at an angle at the outlet of the precooler, making the return of the arc difficult

Method used

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  • Cooling device for gases occurring in installation equipment
  • Cooling device for gases occurring in installation equipment

Examples

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Embodiment Construction

[0035] figure 1 A cooling device 10 is shown as an example, which is installed in the clamping cover (or exhaust duct) of the mounting device shown as a circuit breaker. A window 13 with narrow through-holes 17 , 18 is arranged in the flow path 20 or outlet opening of the hot switching gas, which window consists of a material with high thermal conductivity and high heat capacity. A switching gas flow 20 from the switching chamber 11 flows through the cooling device. The burning arc shall not reach the cooling device. The fastening to the mounting device can take place in that the cooling device forms an integral component of the device, or the cooling device can be mounted detachably on the housing of the mounting device. Corresponding fixing means are not shown, but can consist, for example, of threaded connectors.

[0036] figure 2 A sectional view is shown in which the cooling device 10 is cut vertically in the middle (reference numeral 12 designates a cut plane). Coo...

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PUM

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Abstract

The invention relates to a cooling device 10 for hot gases occurring during and after a switching process in electrical installation equipment, preferably in low-voltage circuit breakers. According to the invention, a window 13 with narrow passage openings 17, 18 is arranged in the flow path 20 of the hot switching gases, and the window 13 is made from a material with high thermal conductivity and high heat capacity. The passage openings 17, 18 in the window are planar in shape and are arranged parallel to the flow direction 20 of the switching gases such that no deflection of the switching gases takes place.

Description

technical field [0001] The invention relates to a cooling device for hot gases arising in an electrical installation, preferably a low-voltage circuit breaker, during and after a switching operation. Background technique [0002] When breaking the current in the motor switch, a switching arc is created when the contacts open. This arc heats the air in the switching chamber, which causes a pressure rise and thus causes heated gas to flow out through the blowing holes, referred to below as exhaust. These heated and electrically conductive gases also contain solid particles in finely distributed form and are also conductive differently after leaving the installation, depending on the composition and the gas temperature. When designing the switching chamber (housing robustness), the process during venting (temperature, switching chamber pressure) must be taken into account. [0003] Most of the arc energy is already taken up in the switchgear through the switchgear walls. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/34H01H9/52H01H71/02
CPCH01H9/52H01H71/0228H01H9/342
Inventor A·扎卡里亚斯C·瑞莫泊勒
Owner EATON ELECTRICAL IP