At present, the safety of fire smoke exhaust dampers is an important issue in residents' daily lives; therefore, the application of high-temperature smoke exhaust fans is becoming more and more widespread.  
However, the specific structure of high-temperature smoke exhaust fans has many shortcomings and deficiencies, which are analyzed in detail as follows:  
- Shortcoming 1: There is no high-temperature smoke exhaust fan equipped with a fire barrier between the passage of the fire control room of the fire damper manufacturer and the outlet pipeline. For fire smoke exhaust dampers, during the construction approval process, there are project planning documents showing that the fire control room of the air supply pipeline and the air pipeline pass through the wall without fire valves. This violates some relevant latest laws and regulations. The purpose of setting up high-temperature smoke exhaust fans by smoke and fire damper manufacturers is to better ensure the fire safety of the fire control room.  
- Shortcoming 2: The information of the automatic control equipment for high-temperature smoke exhaust fans is incomplete, which cannot control and display the smoke exhaust equipment of the smoke prevention and exhaust system. According to relevant regulations, after a fire occurs, the central air conditioning must be shut down in some areas, and the electric high-temperature smoke exhaust fans must be turned off.