CN2110733U

CN2110733U - Hot-flow fan

Info

Publication number: CN2110733U
Application number: CN 91230833
Authority: CN
Inventors: 沈嘉良; 杨美英
Original assignee: XIANFENG ELECTRIC FACTORY SHAN
Current assignee: XIANFENG ELECTRIC FACTORY SHAN
Priority date: 1991-10-25
Filing date: 1991-10-25
Publication date: 1992-07-22

Abstract

The utility model provides a hot flow fan, which is composed of a fan and a motor. The utility model is combined with a water cooling system through a reasonable air cooling system, the fan made of high temperature resisting materials and a rotating shaft are directly inserted into a furnace chamber. The connecting point of the motor and a furnace platform and the connecting point of the motor and an outer sleeve refrigerating device are provided with sealing devices for saving a large amount of investment for civil engineering. The hot flow fan can be used in a severe convection fire furnace with bell type legs and can also be used in a severe convection furnace with high temperature and a uniform temperature requirement. The utility model has the characteristics of convenient operation, low cost, good sealing performance, convenient maintenance, etc.

Description

Hot-flow fan

The utility model relates to fan and motor, relates in particular to the cooling of motor.

General Hot-flow fan according to the height of use occasion temperature and the uniformity difference of temperature, adopts diverse ways, and is also different to the requirement of fan and motor.For strong convection bell-jar type annealing furnace, because furnace chamber temperature is up to 750～850 ℃, require furnace chamber temperature to want evenly simultaneously, the fan made from general material is difficult to reach requirement, and the motor of drive fan is worked under high like this temperature and burnt out easily.The employing coupler structure that the way that solves has makes motor away from furnace chamber, but will drop into a large amount of civil workss like this, and cost is improved.

The purpose of this utility model is to provide a kind of Hot-flow fan easy and simple to handle, lower-cost.This Hot-flow fan combines by a rational air cooling system and constituent, make fan and the rotating shaft of adopting exotic material to make directly stretch into furnace chamber, and, saved a large amount of civil works investments at motor and table joint and motor and overcoat joint use seal arrangement.

The Hot-flow fan that the utility model provides is made up of fan and motor, and a centrifugal fan is arranged in the furnace chamber, and a propeller fan is arranged on the table, and fan is distant crosses rotating shaft by motoring.Motor is air-cooled and water-cooled combines, and gas arrives the motor exocoel through outer wind path and interior wind path, the overcoat cooling unit is arranged with the gas of cool stream through exocoel on the exocoel.There is the interlayer cooling unit at the End cover for motor place with the temperature of cooling on the table, and motor is connected with table and motor is connected with the overcoat cooling unit and all adopts seal arrangement.Centrifugal fan and rotating shaft are made with exotic material.

The Hot-flow fan that the utility model provides has easy and simple to handlely, and cost is lower, good airproof performance, long service life, characteristics easy to maintenance.

Fig. 1 always schemes for the utility model Hot-flow fan.Among the figure, 1 is furnace chamber, and 2 is table, 3 is centrifugal fan, and 4 are rotating shaft (hollow shaft), and 5 is propeller fan bottom air inlet mouth, 6 is the propeller fan, and 7 is the interlayer cooling unit, and 8 is seal ring, 9 is motor, 10 are internal spiral slurry fan, and 11 is radiation rib, and 12 is the motor exocoel, 13 is the overcoat cooling unit, and 14 is wind path (gas).

Structure of the present utility model is provided by following examples and accompanying drawing thereof.

The Hot-flow fan that the utility model provides is made up of fan and motor, and a centrifugal fan 3 is arranged in the furnace chamber 1, makes the former bin of putting into even at furnace chamber temperature, and temperature is 750～850 ℃ herein, and these fan 3 materials are refractory steel; A propeller fan 6 is arranged on the table 2, this place's temperature via interlayer cooling unit 7 is reduced, be convenient to motor 9 and under lower temperature, move, but this place's temperature still reaches 300～500 ℃.Two desk fans are driven by motor 9 by rotating shaft 4, and rotating shaft 4 is a refractory steel, and makes hollow shaft at the intake grill place.Motor 9 is air-cooled and water-cooled, and wind path 14 is by the intake grill input that has in the rotating shaft of stretching into through table in the furnace chamber 4, and intake grill 5 enters motor exocoel 12 in table upper propeller fan 6 bottoms by the hollow shaft 4 that connects fan and motor; Motor 9 inner wind paths 14 are pulled out by the internal spiral slurry fan 10 that is contained on the motor rotary shaft, enter motor exocoel 12, and radiation rib 11 is housed on the motor casing.Motor exocoel 12 has overcoat cooling unit 13, and with the gas 14 of cool stream through exocoel 12, there is interlayer cooling unit 7 at the End cover for motor place.Motor 9 is connected with table 2 and motor 9 is connected with overcoat cooling unit 13 and all adopts seal arrangement, adopts seal ring 8 to guarantee good air-tightness.The air-cooled gas of motor is air, hydrogen, nitrogen or other gas.The cooling unit of motor water-cooled can move respectively, also can couple together operation.Cooling unit is generally water cooling, also can be but hydrogen-cooled or other cooling unit.Motor is a double speed, also can be single speed, three speed, many speed or speed-variable motor.The present embodiment motor is a double speed, and concrete data are 47/12 kilowatt, 4/8 utmost point, 3 phases, 50 hertz.

The Hot-flow fan that the utility model provides not only can use in the strong convection bell-type annealing furnace, also can be applicable in the high and uniform strong convection stove of temperature requirement of temperature, has easy and simple to handlely, and cost is lower, good airproof performance, the characteristics such as easy to maintenance.

Claims

1, a kind of Hot-flow fan of being made up of fan and motor is characterized in that having in the furnace chamber centrifugal fan, and a propeller fan is arranged on the table, fan by rotating shaft by motoring.

2, Hot-flow fan according to claim 1, it is characterized in that motor is air-cooled and water-cooled, wind path is by having the intake grill input in the rotating shaft of stretching into through table in the furnace chamber, intake grill is in table upper propeller fan bottom, enter the motor exocoel by the hollow shaft that connects fan and motor, the motor interior wind path is pulled out by the internal spiral slurry fan that is contained on the motor rotary shaft, enters the motor exocoel, and radiation rib is housed on the motor casing; The motor exocoel has the overcoat cooling unit with the gas of cool stream through exocoel, and there is the interlayer cooling unit at the End cover for motor place.

3, Hot-flow fan according to claim 2, it is characterized in that motor is connected with table and motor is connected with the overcoat cooling unit and all adopts seal arrangement, the air-cooled gas of motor is air, hydrogen, nitrogen or other gas, the cooling unit of motor water-cooled can move respectively, also can couple together operation.

4, according to claim 2 or 3 described Hot-flow fans, it is characterized in that motor is a double speed, centrifugal fan and rotating shaft are made with refractory steel.