Performance and model editing
1. The performance listed in the performance list of the exhaust fan is the performance within the highest efficiency range, divided into five performance conditions according to the air volume, and selected according to the performance chart. The qualified fan of the factory is under rated air volume, the total pressure value is no more than + 5%, and the performance selection table is the standard performance, regardless of the technical documents or order requirements, the performance is standard;
2, the fan installation methods can be divided into horizontal and roof type, the air volume, total pressure, installation size and other properties have special requirements;
3, HTF I and HTF II said pressure type fire high-temperature exhaust fan blade adopts an axial flow type: HTF - I (single speed) and HTF II (double speed) two; HTF - HTF - III, IV said the fire of high temperature flue gas special pressure;
4, HTF - X for the silencer type fire control, high temperature smoke exhaust fan, users can choose different types according to actual needs;
5, HTF - W series roof fire special high-temperature exhaust fan, users can choose according to the flame retardant glass steel cap or steel cap actual needs;
6, HTF - D is low pressure fire fighting high temperature smoke exhaust fan;
7, special Description: GYF and HTF series fans are similar products.
Installation process editing
1, fully familiar with the fan samples, familiar with exhaust fan specifications and forms, the direction of impeller rotation direction of air inlet and outlet, fan before installation should check the impeller with and without rubbing, and to conduct a comprehensive inspection of the components, the attachment is complete, each part is connected firmly, carefully check whether the fan due to the transport of damage or deformation, otherwise it shall be repaired prior to installation.
2, connecting the exhaust fan the import and export of wind pipes should be independent support, weight of pipe shall not be added in the wind machine parts, fan installation should pay attention to the horizontal position of the fan, with the fan and the ground surface and a connecting duct should be adjusted to fit the nature, not. Forcible connection.
3, after fan installed by hand or lever pull impeller, check whether there is tight or rubbing, have hindered rotation of the goods, no abnormal phenomenon, can test run, the exposed part of the transmission device should have the opportunity of wind shield (optional). When the wind turbine inlet is not connected to the pipeline, the protective net or other safety devices (users' own) should also be added.
4, fan wiring must be correct and reliable, fan housing should be properly grounded, grounding must be reliable. The power supply for the exhaust fan must be complete and comply with the relevant requirements. Electrical wiring must have professional knowledge of electrical wiring.
Smoke exhaust fan function is: when the basement fire occurs, there is a lot of smoke generated, then, fire smoke exhaust fan start, the smoke occurred in the fire area excluded. In addition, the smoke exhaust fan can also be used as a basement and air at ordinary times. The positive pressure air blower is directed to escape air pressure into the room. When a fire occurs in a building, will produce a lot of smoke and toxic gases such as carbon monoxide and blocking the line of sight, the positive pressure blower to escape the fire stairs air, indoor smoke can not arrive at the stairs, to create conditions for people to escape. If the blower is located on the roof of the high-rise building, pass it through the pipe well
The stairs or elevator blower, then called the positive pressure air. Its function is to fire on the floor, to the front stairs or lift fan, ensure the safety of evacuation.
A fire fan is a kind of industrial fan that can run continuously for 60 minutes or more at 300 DEG C at high temperature and not damaged for 20 hours at a temperature of 100 DEG C / min..
1., according to fan installation methods can be divided into horizontal and roof type.
2., according to the pressure classification, there are atmospheric fire, high temperature smoke exhaust fan, medium pressure fire, high temperature smoke exhaust, low pressure fire, high temperature smoke exhaust fan.
3. according to the blade type, there are two types of axial speed, single speed and double speed.
4. according to the silencer classification, there is a silencer type fire fighting high temperature smoke exhaust fan and a non noise type fire fighting high temperature smoke exhaust fan.
Selection techniques of fire exhaust fan:
1. The main control parameters of fire exhaust fan are working temperature, air volume, total pressure, efficiency, noise, motor power, speed and shaft power.
2, in the medium temperature is not higher than 85 Celsius conditions, should be able to long-term normal operation.
3. The value of the pressure of the smoke blower should be calculated according to the worst loop of the smoke exhaust system, and the value of the residual pressure is 40 to 50Pa in the smoke prevention staircase. Room, the former room, the former room, combined with internal fire elevator evacuation layer of the residual pressure ranged from 25 to 30Pa.
4, fire smoke exhaust fan should ensure: when the transmission medium temperature at 280 degrees, can work continuously 30min, and in the medium temperature cooling to the ambient temperature can continue to normal operation.
5, the air blower should exhaust system set separately. The location of exhaust fan should be in the same layer or upper layer of smoke exhaust area.
6, fire smoke exhaust fan in the manual, given the operating conditions of the lower than the A sound level, noise limits should comply with the provisions of JB/T8690-1998.
7, fire exhaust fan air volume should be required to increase the value of air flow, not less than 10%~20% of the amount of affluence