A high temperature resistant fire smoke exhaust fan

Abstract

The invention discloses a novel high-temperature-resistant fire-fighting smoke-discharge fan. The novel high-temperature-resistant fire-fighting smoke-discharge fan comprises an outer barrel, an innerbarrel which is coaxially arranged in the outer barrel and is sealed, a plurality of guide supporting parts for fixing the inner barrel, a through shaft motor which is coaxially mounted in the innerbarrel, smoke discharge fans which are connected with a rotary shaft of the through shaft motor, an air outlet channel and an air inlet channel for enabling the inner space of the inner barrel to communicate with the outer space of the outer barrel, an air exhaust guide ring which is arranged at the front end of the inner wall of the inner barrel and is tapered, a reversing transmission mechanismwhich is connected with the rear end of the rotary shaft, and an air-cooling mechanism which is driven by the reversing transmission mechanism; an air inlet of the air-cooling mechanism communicates with the air inlet channel; and an air outlet of the air-cooling mechanism faces towards the front end of the inner barrel. Through the sealed type fan of the inner barrel, high-temperature smoke is prevented from invading to increase the temperature of a motor operation environment; meanwhile, a ventilating channel which communicates with outside fresh air and the air-cooling mechanism which is synchronously driven by a fan motor are arranged, so that independent circulation of heat dissipation inside the inner barrel is realized, and an air-cooling way replaces a conventional water-cooling way, and therefore, operation stability of the motor is improved from multiple aspects.

Description

technical field [0001] The invention relates to the field of fire-fighting and smoke-exhausting, in particular to a high-temperature-resistant fire-fighting and smoke-exhausting fan. Background technique [0002] With the development of the construction industry, the issue of building fire protection has become increasingly important. Modern buildings built in recent years need to be equipped with fire and smoke exhaust systems to discharge the smoke generated during building fires in time to reduce personal and property losses such as burns caused by high-temperature smoke in the event of a fire. Most of the fire and smoke exhaust systems of existing buildings use smoke exhaust fans and smoke exhaust valves to build smoke exhaust systems that adapt to different environments. However, underground system projects such as tunnels have the characteristics of small space and high ventilation requirements. The smoke system, especially when the smoke exhaust fan is used, not only...

AI Technical Summary

Problems solved by technology

When the applicant investigated the fire-fighting smoke exhaust fans that have been put into use, it was found that many smoke exhaust fans can operate well in the early stage, but some of them will always fail when encountering sudden fire accidents or after long-term operation. To achieve the ideal expected fire and smoke exhaust effect and the demand for long-term stable operation life

The reason is that although the water-cooled structure of the inner cylinder can improve the performance of the fire-fighting smoke exhaust fan from the perspective of heat dissipation and cooling, it has higher requirements on the sealing of the overall inner cylinder and the water pipe of the motor, and the fire-fighting cooling water must be guaranteed. There is no leakage in the normal cycle state, but the reality is that the motor will vibrate slightly when it is running for a long time. When the operating power is increased in the fire-fighting state, the resulting operating jitter will increase. These inevitable operating jitters will easily cause the waterway The pipes and casing are loosely connected everywhere, resulting in the problem of cooling water leakage, and because the water cooling method needs to accommodate a large amount of water, the leaked cooling water can easily directly enter the inner cylinder and the motor, affecting the normal operation of the motor

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