Background technique:
Existing induced draught fan is often bad in using; change a plurality of motors within one month; through discovering; there are a lot of problems in the induced draught fan that dispatches from the factory now: the induced draught fan of market sale now; after installation, without induced draught fan the time, because the motor chassis is too near near fan; the smoke space is little, and cigarette is blocked up in appearance, smoke is not smooth.Because motor is low, and is too near from thermal source, produce high temperature during induced draught fan work, motor is bad easily, and lubricant oil is withered, and bearing loses lubricating function, causes motor to burn out.Because motor is low excessively, near excessively, flue dust is excessive, produce and stop up, can not dispel the heat, cause motor not run well.In winter during low temperature, because producing steam, the coal combustion bavin makes moist, cause motor, electric capacity to burn out.
Technological scheme:
The utility model purpose is to disclose the civilian moisture resistance hot induced draught fan of a kind of half support frame type, and, drive motor supporting frame 2 rainproof 1 by umbellate form, drive motor 3, mounting base 6, blade assembly 7, motor shaft 8 are formed.It is characterized in that: mounting base 6 is cast into one with drive motor supporting frame 2, drive motor 3 by bolt on drive motor supporting frame 2, drive motor 3 is positioned on supporting frame 2 medial axis, motor shaft 8 lower ends are fixed with blade assembly 7, umbellate form rain cover 1 above motor, by bolt in motor upper end.
A kind of improvement of the present utility model is, the thermal baffle 4 in tape spool hole in the middle of between blade assembly 7 and motor, installing additional, and thermal baffle can be installed individual layer and multilayer, and the thermal baffle shape can be flat shape, waveform and abnormity.
Another improvement of the present utility model is, the motor shaft length between the outer and blade assembly 7 of drive motor 3 shells is between 4.5cm-18cm.
Another improvement of the present utility model is that the conical heat insulation smoke-dividing device 5 in tape spool hole plays heat insulation flow distribution plate effect in the middle of installing additional below installation motor 3 planes on the supporting frame 2.
Another improvement of the present utility model is that the conical heat insulation smoke-dividing device 5 in tape spool hole plays the effect of thermal baffle in the middle of installing additional again between thermal baffle 4 and the blade assembly 7.
Another improvement of the present utility model is, drive motor supporting frame 2 support motor positions are cast into circle, and diameter substitutes thermal baffle protection motor between 10cm-30cm.
Another improvement of the present utility model is that described mounting base 6 is the middle circle that has the air channel through hole, rectangular or square seat.
The utility model installs well, seals, rainproof good, elegant in appearance, further improved smoke discharging effect, strengthened the smoke space, when not using induced draught fan, cigarette is not obstructed, smoke is unobstructed, the motor mounting point has installed thermal baffle and conical smoke-dividing device again additional after improving, and promptly alleviates motor and encroached on by high temperature gas flow, also alleviate humidity, improved motor, electric capacity working life greatly.
Specific implementation:
Because among the people different with the fire amount, the chimney heat differs, the special moisture resistance hot induced draught fan of a series of different sizes of producing has installed individual layer and multilayer insulation plate additional, and thermal baffle is shaped as flat shape, waveform or abnormity.According to smoke space size, specification difference, the motor raising does not wait.The outer axial length of motor casing has installed conical heat insulation smoke-dividing device again additional on above basis between 4.5cm-18cm, improve smoke discharging effect, has thermal baffle and no thermal baffle to install and use.Simple in order to install, assembly is few, support motor frame shape is cast into circle, diameter between 10cm-30cm, alternative thermal baffle.Further improve the smoke evacuation performance, strengthened the smoke space, alleviated motor and encroached on by high temperature gas flow, protected motor electric capacity to use for a long time, increase the service life.