CN216342937U - Forced convection fan device with high-temperature internal circulation - Google Patents
Forced convection fan device with high-temperature internal circulation Download PDFInfo
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- CN216342937U CN216342937U CN202122766643.5U CN202122766643U CN216342937U CN 216342937 U CN216342937 U CN 216342937U CN 202122766643 U CN202122766643 U CN 202122766643U CN 216342937 U CN216342937 U CN 216342937U
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Abstract
The utility model relates to the technical field of convection fans, in particular to a high-temperature internal circulation forced convection fan device which can continuously work under the conditions of high temperature and high speed, realizes directional flow guiding and can balance the hot air pressure and the temperature in a box body; including ordinary inverter motor and high temperature box, ordinary inverter motor fixed mounting is in the outside of high temperature box, ordinary inverter motor's motor output shaft passes through drive connecting device and high temperature shaft connection, the high temperature axle stretches into high temperature box inside and at the end-to-end connection impeller, the high temperature axle is located the outside part outside of high temperature box and sets up stabilizing mean, week side of impeller sets up the casing, drive connecting device precision connection motor output shaft and high temperature axle, the motor need not the customization major axis and stretches into the stove again, the axle just can not give the motor heat-conduction, directly select for use ordinary inverter motor for use, need not to choose for use high temperature inverter motor, the major axis has also been avoided simultaneously to take the impeller to take place the problem of high temperature creep.
Description
Technical Field
The utility model relates to the technical field of convection fans, in particular to a high-temperature internal circulation forced convection fan device.
Background
The market requires the product of processing in the box below 1000 closed high temperature, no matter be the outward appearance or the requirement for quality is higher and higher, through analyzing the product under high temperature environment, after being heated evenly, the product can reach high standard requirement. Aiming at the requirement, a high-temperature internal circulation forced convection fan device is arranged in a box body in the current market, but some problems and faults are exposed in the using process, and the most troublesome problems are as follows:
when the position of the fan mounting position is not appropriate, the two sides of the wind pressure output when the box body is wide are not balanced, and the fans are mounted on the two sides of the box body for balancing the wind pressure of the box body, so that the cost of the heating furnace is greatly improved, and the maintenance is very complicated.
The high-temperature internal circulation fan used at present is a basically specially-made high-temperature-resistant long-shaft variable frequency motor, a high-temperature impeller is installed on a long shaft of the motor, the shaft drives the impeller to frequently work under the conditions of high temperature and high speed, the fan shaft drives the impeller to generate high-temperature creep under the action of strong centrifugal force, so that dynamic balance is gradually damaged, the pressure of gas in a box body is uneven, the impeller and a volute in the box body are seriously scratched, and under the condition, only the whole fan can be replaced, so that the client cost is increased, and the maintenance time is prolonged.
The high-temperature internal circulation part system of the fan is arranged in a high-temperature 1000-degree closed box body and conducts heat and heat radiation, so that the service life of part of parts is reduced, the currently adopted cooling mode is water cooling or natural cooling, the water cooling mode relates to the problems of environment temperature, water feeding and water discharging, and meanwhile, the customer maintenance is complicated; the natural cooling mode, the heat dissipation is slower, and the bearing locks easily under the circumstances of not having the electricity, and fan vibration value is bigger and bigger until unable continuation use.
The above problems seriously affect the normal use of the equipment during the use process. Therefore, the development of a novel high-temperature internal circulation forced convection fan device is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel high-temperature internal circulation forced convection fan device, wherein a fan is vertically arranged above equipment, can continuously work at the temperature of 100 ℃ and 1000 ℃, is made of different materials according to high-temperature conditions, does not need water cooling, is periodically filled with high-temperature lubricating grease to protect a motor, can realize directional flow guide and bidirectional air outlet, and can balance the hot air pressure and the temperature in a box body.
In order to realize the purpose, the utility model is realized by adopting the following technical scheme:
the utility model relates to a high-temperature internal circulation forced convection fan device, which comprises a common variable frequency motor and a high-temperature box body, wherein the common variable frequency motor is fixedly arranged on the outer side of the high-temperature box body, a motor output shaft of the common variable frequency motor is connected with a high-temperature shaft through a driving connecting device, the high-temperature shaft extends into the high-temperature box body and is connected with an impeller at the tail end, a stabilizing mechanism is arranged on the outer side of the part of the high-temperature shaft, which is positioned outside the high-temperature box body, and a casing is arranged on the peripheral side of the impeller.
In one possible solution, the stabilizing mechanism comprises a high temperature bearing arranged outside the high temperature shaft.
In a possible technical scheme, a heat dissipation impeller is arranged on the outer side of the part, located outside the high-temperature box body, of the high-temperature shaft.
In a possible technical scheme, a heat insulation device is arranged at the front end of the impeller and outside the part of the high-temperature shaft inside the high-temperature box body.
In a possible technical scheme, the heat insulation device is a heat insulation box body which surrounds the outer side of the high-temperature shaft, and heat insulation materials are filled in the heat insulation box body.
In a possible technical scheme, one side wall of the heat insulation box body is connected with one side wall of the high-temperature box body and is sealed through a heat insulation sealing gasket.
In a possible technical scheme, an air inlet is formed in a position of the high-temperature box body, which vertically corresponds to the shell.
In a possible technical scheme, one side that the outside of high temperature box is located ordinary inverter motor sets up cooling device for cool down motor output shaft and coupling assembling thereof.
In a possible technical scheme, the casing is provided with a bidirectional air outlet.
Compared with the prior art, the utility model has the beneficial effects that: the common variable frequency motor is fixedly arranged on the outer side of the high-temperature box body, the area of a plurality of units can be uniformly distributed above the super-large high-temperature box body, the fan is arranged in the center of each unit, and meanwhile, the high-temperature variable frequency motor works under the conditions of high temperature and high speed, and the high-temperature shaft drives the impeller to run more stably under the action of strong centrifugal force; the high-temperature shaft and the motor output shaft are connected by the driving connecting device, the motor does not need to customize a long shaft and then extends into the furnace, the shaft does not conduct heat to the motor, a common variable frequency motor is directly selected, the high-temperature variable frequency motor is not required to be selected, and the problem of high-temperature creep probability of the long shaft with the impeller is avoided; in special cases, the motor is damaged, the driving connecting device is taken off, and the damaged motor is directly replaced by a new common variable frequency motor, so that a fan system in the furnace does not need to be disassembled and assembled, the balance of an impeller in the furnace does not need to be readjusted, and the fan motor can be quickly replaced without the guidance of a fan manufacturer; the utility model has the advantages of simple installation, reliable performance, less customer investment, stable use and simple after-sale maintenance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged view of the portion A in FIG. 1;
FIG. 3 is a partially enlarged view of the portion B in FIG. 1;
reference numerals: 1. a common variable frequency motor; 2. a drive connection; 3. a stabilizing mechanism; 4. a heat insulating gasket; 5. a straight-through type pressure injection oil cup; 6. a heat dissipation impeller; 7. a thermal insulation device; 8. an impeller; 9. an output shaft of the motor; 10. a high temperature shaft; 11. a high temperature bearing; 12. a housing; 13. and a cooling device.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 2, the high-temperature internal circulation forced convection fan device according to the embodiment of the present invention includes a common variable frequency motor 1 and a high-temperature box, the common variable frequency motor 1 is vertically and downwardly fixedly mounted on a bracket on an upper side of the high-temperature box, a motor output shaft 9 of the common variable frequency motor 1 is vertically and downwardly connected with a high-temperature shaft 10 through a drive connection device 2, the drive connection device 2 is precisely connected with the motor output shaft 9 and the high-temperature shaft 10, the high-temperature shaft 10 extends into the high-temperature box and is connected with an impeller 8 at a tail end, the temperature inside the high-temperature box can be generally between 100 ℃ and 1000 ℃, a fan assembly is made of different materials according to high-temperature conditions, a stabilizing mechanism 3 is disposed on an outer side of a portion of the high-temperature shaft 10 located outside the high-temperature box, and a casing 12 is disposed on a peripheral side of the impeller 8.
The common variable frequency motor 1 is fixedly arranged on the outer side of the high-temperature box body, the high-temperature shaft and the motor output shaft are connected by the driving connecting device, the motor does not need to customize a long shaft and then extends into the furnace, the shaft does not conduct heat to the motor, the common variable frequency motor is directly selected, the high-temperature variable frequency motor is not required to be selected, and the problem of high-temperature creep probability of the long shaft with an impeller is avoided; the impeller 8 and the main shaft 10 are partially arranged in the closed high-temperature box body, when the impeller 8 is driven by a common variable frequency motor 1 through the high-temperature shaft 10 to rotate, gas filled between the blades rotates at a high speed along with the blades under the pushing action of the blades, the gas is guided to smoothly enter the impeller 8, the impeller 8 transfers kinetic energy during rotation to the gas to convert the kinetic energy into fluid power, gas with certain wind pressure and wind volume is formed, and the gas is directionally guided through the casing 12 and sprayed to a specified position; in special cases, the motor is damaged, the driving connecting device is taken off, and the damaged motor is directly replaced by a new common variable frequency motor, so that a fan system in the furnace does not need to be disassembled and assembled, the balance of an impeller in the furnace does not need to be readjusted, and the fan motor can be quickly replaced without the guidance of a fan manufacturer; the area of a plurality of units can be equally divided above the super-large high-temperature box body, the fan is arranged in the center of each unit, and meanwhile, the high-temperature box body works under the conditions of high temperature and high speed, and the high-temperature shaft drives the impeller to run more stably under the action of strong centrifugal force; the fan can be recycled at high temperature, and gradually makes the temperature and the pressure of gas in the box body approach to balance; the stabilizing mechanism 3 plays a role in promoting the stable operation of the high-temperature shaft 10; the utility model has the advantages of simple installation, reliable performance, less customer investment, stable use and simple after-sale maintenance.
Preferably, the fan impeller 8 needs to be subjected to heat treatment after being welded and formed, welding stress can be eliminated, dynamic balance correction is performed after machining, the dynamic balance grade is preferably G2.5, and the impeller is subjected to run-out degree detection, so that the stable operation of the fan is ensured.
As shown in fig. 3, the stabilizing mechanism 3 includes a high temperature bearing 11 disposed outside the high temperature shaft 10, which further ensures that the fan operates at high temperature and high speed, and the high temperature shaft 10 with the impeller 8 operates more stably under the action of strong centrifugal force.
Further, the outer side of the part, located outside the high-temperature box, of the high-temperature shaft 10 is provided with the heat dissipation impeller 6, so that the high-temperature shaft 10 is assisted in heat dissipation, high-temperature creep deformation is avoided, the temperature of the high-temperature shaft 10 transmitted to the motor output shaft 9 is effectively reduced, and the service life of the common variable frequency motor 1 is prolonged.
Furthermore, the high-temperature shaft 10 is positioned outside the part inside the high-temperature box body, the heat insulation device 7 is arranged at the front end of the impeller 8, the heat insulation device 7 can select any device with a suitable shape or material, and the heat insulation device 7 surrounds the part of the high-temperature shaft 10 inside the high-temperature box body as much as possible, so that high temperature inside the high-temperature box body can be blocked, and the influence degree of the high-temperature shaft 10 on a high-temperature environment is reduced; in this embodiment, the heat insulation device 7 is a heat insulation box body surrounding the high temperature shaft 10, and the heat insulation box body is filled with heat insulation material; preferably, before the side plates are installed, the environment-friendly temperature-resistant fiberboard is used on the periphery of the heat insulation box body, a high-temperature-resistant binder not lower than 1200 ℃ is firstly and uniformly coated on the surface of the outer side of the heat insulation box body, then the heat insulation box body is positioned, the lower portion of the panel is filled with a high-quality rock wool heat insulation board with low thermal conductivity of about 80mm, the heat insulation box body is compacted to the height of the heat insulation box body by using a standard ceramic fiber block and then sealed by using a 0Cr23Ni13 bottom plate, and slag cannot fall off in the use process after the surface of the environment-friendly cotton in the heat insulation box body is coated with glue.
The heat insulation box body is arranged on the upper side of the high-temperature box body, and the top wall of the heat insulation box body is connected with the top wall of the high-temperature box body and sealed through a heat insulation sealing gasket 4.
The bottom end of the high-temperature box body is provided with an air inlet at a position vertically corresponding to the impeller 8, when the impeller 8 is driven by the motor 1 through the high-temperature shaft 10 to rotate, the gas filled between the blades rotates at a high speed along with the blades, the gas is guided to smoothly enter the impeller 8, the impeller 8 transfers the kinetic energy during rotation to the gas to convert the kinetic energy into fluid power, gas with certain air pressure and air volume is formed, and the gas is directionally guided and output through the shell 12; in order to make the air outlet more balanced, the casing 12 is provided with a bidirectional air outlet on the side, the air is output to two sides through the bidirectional air outlet, and the air outlet temperature and pressure tend to be balanced under the rotation action of the high-temperature shaft 10; in practical use, the lower part of the casing 12 can be connected with a radiation plate, and the outlet air is uniformly sprayed to a required position through spray holes on the radiation plate.
A cooling device is arranged on one side, located on the common variable frequency motor 1, of the upper side of the high-temperature box body and used for cooling the motor output shaft 9 and the connecting assembly thereof, so that the heat dissipation effect of the fan rotating shaft and the connecting assembly is further improved, and the influence of high temperature on the fan is reduced; alternatively, the cooling device may be the cooling device provided in the patent application No. 201921721868.5 entitled overhead blower motor cooling device at high temperature following power failure.
It should be noted that, during the fan recycling process, the motor is protected by periodically injecting high-temperature grease, for example, a straight-through type pressure injection oil cup 5 is installed on the outer side of the high-temperature shaft 10, and high-temperature grease is injected through the straight-through type pressure injection oil cup 5, and specifically, a product conforming to the JB/T7940.1-1995 can be selected as the straight-through type pressure injection oil cup 5.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a convection current fan device is forced to high temperature inner loop, its characterized in that, including ordinary inverter motor (1) and high temperature box, ordinary inverter motor (1) fixed mounting is in the outside of high temperature box, and motor output shaft (9) of ordinary inverter motor (1) are connected with high temperature axle (10) through drive connecting device (2), and high temperature axle (10) stretch into inside and at end-to-end connection impeller (8) of high temperature box, high temperature axle (10) are located the outside partial outside of high temperature box and set up stabilizing mean (3), the week side of impeller (8) sets up casing (12).
2. A high temperature internal circulation forced convection fan arrangement according to claim 1, characterized in that the stabilizing means (3) comprises a high temperature bearing (11) arranged outside the high temperature shaft (10).
3. The high-temperature internal circulation forced convection fan device as claimed in claim 2, wherein a heat radiation impeller (6) is provided outside a portion of the high-temperature shaft (10) located outside the high-temperature case.
4. A high temperature internal circulation forced convection fan device as claimed in claim 3, wherein the high temperature shaft (10) is located outside the portion inside the high temperature box and a heat insulating device (7) is provided at the front end of the impeller (8).
5. The high-temperature internal circulation forced convection fan device as claimed in claim 4, wherein the heat insulation device (7) is a heat insulation box body surrounding the outside of the high-temperature shaft (10), and the heat insulation box body is filled with heat insulation materials.
6. The high temperature internal circulation forced convection fan device as recited in claim 5, wherein one side wall of the heat insulating box body is connected with one side wall of the high temperature box body and sealed by a heat insulating gasket (4).
7. The forced convection fan device with high temperature internal circulation as claimed in claim 6, wherein the bottom end of the high temperature box body is provided with an air inlet at a position vertically corresponding to the impeller (8).
8. The forced convection fan device with high temperature internal circulation as claimed in claim 7, wherein a cooling device is arranged on one side of the common variable frequency motor (1) on the outer side of the high temperature box body for cooling the motor output shaft (9) and the connecting component thereof.
9. The high temperature internal circulation forced convection fan device of claim 8, wherein the enclosure (12) is provided with a bidirectional air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122766643.5U CN216342937U (en) | 2021-11-12 | 2021-11-12 | Forced convection fan device with high-temperature internal circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122766643.5U CN216342937U (en) | 2021-11-12 | 2021-11-12 | Forced convection fan device with high-temperature internal circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342937U true CN216342937U (en) | 2022-04-19 |
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ID=81147052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122766643.5U Active CN216342937U (en) | 2021-11-12 | 2021-11-12 | Forced convection fan device with high-temperature internal circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342937U (en) |
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2021
- 2021-11-12 CN CN202122766643.5U patent/CN216342937U/en active Active
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