CN109687666B - Three-phase asynchronous motor for explosion-proof fan - Google Patents
Three-phase asynchronous motor for explosion-proof fan Download PDFInfo
- Publication number
- CN109687666B CN109687666B CN201910076612.1A CN201910076612A CN109687666B CN 109687666 B CN109687666 B CN 109687666B CN 201910076612 A CN201910076612 A CN 201910076612A CN 109687666 B CN109687666 B CN 109687666B
- Authority
- CN
- China
- Prior art keywords
- motor body
- motor
- fan
- explosion
- barb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000009423 ventilation Methods 0.000 claims description 22
- 238000007791 dehumidification Methods 0.000 claims description 19
- 244000309464 bull Species 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 17
- 238000001035 drying Methods 0.000 description 16
- 239000000428 dust Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000002274 desiccant Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
- H02K15/125—Heating or drying of machines in operational state, e.g. standstill heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a three-phase asynchronous motor for an explosion-proof fan, which relates to the technical field of motors and comprises a motor body, a casing, fan blades and a dehumidifying mechanism, wherein the casing is sleeved outside the motor body, the fan blades are coaxially fixed with an output shaft of the motor body, the dehumidifying mechanism is arranged on the motor body and is used for dehumidifying, the dehumidifying mechanism comprises a plurality of heating sheets, the heating sheets are arranged on the inner wall of the casing and are distributed around the periphery of the motor body at equal angles, a plurality of air holes are formed in two axial ends of the motor body, a heat conducting layer is arranged between each heating sheet and the motor body, the air holes are opposite to the fan blades, and a plurality of convection holes are formed in the circumferential. The invention has the effect of preventing the motor from being burnt due to the damp of the motor so as to prolong the service life of the motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a three-phase asynchronous motor for an explosion-proof fan.
Background
At present, electric motors are widely used in homes and factories. The motor is an electromagnetic device which realizes electric energy conversion or transmission according to the electromagnetic induction law, and the motor is mainly used for generating driving torque and serving as a power source of electric appliances or various machines. The motor mainly comprises a base, a stator winding, a rotor and the like, wherein the stator winding is electrified to generate a magnetic field and then drives the rotor to rotate so as to enable an output shaft of the motor to rotate, and therefore other equipment connected with the output shaft of the motor is driven to operate. The three-phase asynchronous motor is a kind of motor, and is a kind of motor powered by a 380V three-phase alternating current (phase difference of 120 degrees) which is simultaneously switched in, and the rotor and the stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different rotating speeds, and have slip ratio, so the three-phase asynchronous motor is called.
The fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Fans are widely used in ventilation, dust extraction and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. The main structural components of the fan are an impeller, a casing and a motor, and the motor is used for driving the impeller to rotate so as to generate wind pressure for ventilation. The explosion-proof fan is suitable for conveying flammable, explosive and non-corrosive gas, the environmental temperature is not more than 60 ℃, the explosion-proof fan is widely applied to ventilation or strong heating radiation in general factories, warehouses, offices and houses, and the explosion-proof fan can resist the impact force and heat of explosion and can still work normally without loss.
The above prior art solutions have the following drawbacks: when the motor of the fan is stored in a humid environment for a long time, water vapor easily enters the shell, so that the structure inside the motor is wetted, the water has the conductive characteristic, the insulation resistance of the motor is easily reduced, the coil of the motor is subjected to insulation breakdown, the motor burnout accident is easily caused, and the service life of the motor is shortened.
Disclosure of Invention
The invention aims to provide a three-phase asynchronous motor for an explosion-proof fan, which can avoid motor burnout accidents caused by the fact that a motor is affected with damp and prolong the service life of the motor.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a three-phase asynchronous motor for explosion-proof fan, establishes at this external casing of motor, with the coaxial fixed flabellum of motor body's output shaft including motor body, cover to and set up the dehumidification mechanism who is used for the dehumidification on motor body, dehumidification mechanism is including setting up on the casing inner wall and around motor body week side a plurality of heating plates that angular distribution such as, motor body has seted up a plurality of gas pockets along its axial both ends, be provided with the heat-conducting layer between heating plate and the motor body, the gas pocket is relative with the flabellum, motor body circumference has seted up a plurality of convection orifices on the surface.
By adopting the technical scheme, the fan blades are driven to rotate when the motor body rotates, so that the ventilation effect is realized; meanwhile, before the motor body is started, the motor body is heated after being electrified and heated by the heating sheet, so that the evaporation speed of water on the motor body is accelerated, and meanwhile, the steam expands outwards along the convection holes and the air holes after being heated and expanded, so that the discharge of the steam is accelerated, the motor burning accident caused by the damp of the motor is avoided, and the service life of the motor is prolonged; meanwhile, after the temperature of the heated air rises, the convection of gas molecules is intensified, so that the discharge of water vapor is accelerated, and the dehumidification effect is achieved; the heat conducting layer is used for reducing the direct contact of the heating sheet and the motor body, and avoids heat accumulation to damage parts inside the motor body, so that the service life of the motor body is prolonged.
The invention is further configured to: an auxiliary shaft is coaxially fixed at one end, far away from an output shaft, of a rotor of the motor body, an impeller is coaxially fixed on the auxiliary shaft, the impeller comprises a centrifugal cylinder connected with the auxiliary shaft and a plurality of arc-shaped sheets arranged on the inner wall of the centrifugal cylinder at intervals around the auxiliary shaft, and an included angle is formed between each arc-shaped sheet and the axial direction of the centrifugal cylinder.
By adopting the technical scheme, when the motor body operates, the motor body drives the auxiliary shaft to rotate, the auxiliary shaft drives the impeller to rotate, the impeller drives the centrifugal cylinder to rotate, the centrifugal cylinder drives the arc-shaped sheet to rotate, the arc-shaped sheet cuts air when rotating, and the air is pushed to the motor body along the axial direction through the arc-shaped surface, so that the air flow speed on the surface of the motor body is improved; meanwhile, the arc-shaped sheets are arranged on the inner wall of the centrifugal cylinder, the air in the centrifugal cylinder is driven to do centrifugal motion when the arc-shaped sheets rotate, the air enters between the adjacent arc-shaped sheets after being subjected to spiral pressurization and is blown to the motor body under the guidance of the arc-shaped sheets, the air speed on the surface of the motor body is improved, the overflow and dispersion of water vapor are accelerated, and the dehumidification efficiency is improved.
The invention is further configured to: and a funnel-shaped air guide ring is arranged between the output shaft of the motor body and the centrifugal cylinder on the impeller, and the diameter of one side of the air guide ring close to the motor body is larger than that of the other side of the air guide ring.
Through adopting above-mentioned technical scheme, be provided with the wind-guiding ring on the impeller, the wind-guiding ring is and leaks hopper-shaped, and the wind-guiding ring leans on motor body's a side diameter to be greater than the opposite side to this increase impeller air inlet side's open area makes things convenient for gathering of air, reduces the open area of impeller air-out side simultaneously, improves the air flow velocity of wind pressure in order to improve motor body surface, improves motor body's dehumidification effect.
The invention is further configured to: the inside of the casing is located at the outside of the motor body and is provided with a flow guide cavity communicated with the inside of the motor body, the dehumidifying mechanism further comprises a flow guide fan arranged in the flow guide cavity, and the air outlet direction of the flow guide fan and the axial direction of the motor body form an included angle and face away from the convection hole side.
By adopting the technical scheme, the shell is internally provided with the flow guide cavity, the flow guide fan is arranged in the flow guide cavity, the heating sheet heats the motor body to accelerate the evaporation of water before the motor body operates, meanwhile, the flow guide fan improves the air flow speed on the surface of the motor body, accelerates the convection of air to accelerate the evacuation of water vapor, and avoids the phenomenon that the water vapor is condensed because the water vapor is sealed in the shell or the motor body, so that the dehumidification effect is influenced; the air outlet direction of the flow guide fan and the axial direction of the motor body form an included angle, so that negative pressure is formed on one side of the flow guide fan close to the motor body, and water vapor generated by evaporation in the motor body is discharged out of the motor body under air pressure, so that the dehumidification effect is improved.
The invention is further configured to: the air inlet of the flow guide fan is provided with a drying bag, a drying agent is filled in the drying bag, and the drying bag is opposite to the air hole.
By adopting the technical scheme, the drying bag is arranged in the flow guide fan, the drying agent is placed in the drying bag, and the drying agent absorbs the water vapor on the motor body, so that the dehumidifying effect is achieved; meanwhile, the drying bag is positioned at the air inlet of the flow guide fan, so that water vapor entering the air in the motor body is removed, the dryness in the motor body is kept, and the motor body is prevented from being damaged due to the short circuit phenomenon.
The invention is further configured to: the motor is characterized in that a temperature sensor for detecting the temperature of the motor body is arranged in the shell, a controller which is electrically connected with the temperature sensor to receive an electric signal and a contact switch which is electrically connected with the heating plate to control the on-off of power supply are arranged on the shell, and the controller is electrically connected with the contact switch to control the on-off of the contact switch.
Through adopting above-mentioned technical scheme, when motor body's temperature was higher, temperature sensor triggered and sent the signal of telecommunication to the controller, and the disconnection of controller control contact switch to this makes the heating plate stop heating, avoids motor body heat to gather and makes motor body take place to damage or accelerate the circuit ageing, thereby protection motor body.
The invention is further configured to: the casing includes that at least two rotate the vent flap of being connected with the motor body top, the vent flap lid is established on the motor body, the vent flap symmetry sets up and rotates opposite direction, the vent flap is kept away from and is provided with the retaining member between its one side of rotating the junction and the motor body.
By adopting the technical scheme, when the ventilating cover is opened, the air flow exchange between the motor body and the outside is accelerated, so that the drying of the motor body is accelerated, and the discharge of water vapor is accelerated; meanwhile, the shell is convenient for operators to open the shell for troubleshooting and maintenance; when the ventilation cover is closed, dust entering the motor body through the convection hole is reduced, and the blockage of dehumidification due to blockage of the convection hole is avoided; the retaining member is used for locking the ventilating cover, and the ventilating cover is prevented from loosening when the motor body runs, so that the motor body is unbalanced and generates noise or breaks down.
The invention is further configured to: the retaining member is including setting up barb, the fixing base of setting on the motor body outer wall that its rotation junction was kept away from to the ventilating lid, wearing to locate in the fixing base and with the fixing base lock lever of being connected of sliding to and the elastic component of being connected with the lock lever, set up the spout that supplies the lock lever to slide and connect on the fixing base, the spout bottom extends and runs through the fixing base to the barb side, the elastic component is connected with spout one end lateral wall, the barb remove when to the spout in the lock lever slip barb sunken side and with barb joint cooperation.
Through adopting above-mentioned technical scheme, the elastic component compression produces elasticity and lets out the space simultaneously and makes the barb insert the spout when the check lock lever slides in, the check lock lever with barb joint cooperation when sliding along the spout under the elastic action of elastic component to this makes vent flap and fixing base locking, thereby locks the vent flap.
The invention is further configured to: the barb is provided with a guide block, and one end of the guide block facing the sliding groove is provided with an inclined surface inclined to one side of the locking rod.
Through adopting above-mentioned technical scheme, set up the guide block on the barb, set up the inclined plane on the guide block, when the barb inserted the spout, the inclined plane contact of check lock lever one end and guide block to this makes the check lock lever slide along the inclined plane of guide block and lets out the spout space and supply the barb to insert, reduces and stirs the required work load of check lock lever, raises the efficiency.
The invention is further configured to: one side that the spout was kept away from to the guide block is provided with the inclined plane towards the ventilation lid, the check lock lever supports tightly with the inclined plane of guide block after check lock lever and barb joint, there is the bolt with check lock lever parallel arrangement on the fixing base, bolt and fixing base threaded connection, it is provided with the bull stick to rotate on the bolt, the check lock lever is kept away from the one end of spout and is seted up and is pegged graft complex draw-in groove with the bull stick.
Through adopting above-mentioned technical scheme, the bull stick rotates to the draw-in groove grafting cooperation with the check lock lever, and the bull stick drives the bolt rotation when rotating simultaneously, and the bolt drives the check lock lever when rotating and is close to the guide block, and check lock lever one end along the guide block towards one side inclined plane of ventilation lid, drive the barb and go deep into the spout to this makes the ventilation lid be close to the fixing base, reduces the gap between ventilation lid and the motor body, avoids impurity such as dust to get into the motor originally internally, avoids the dust to influence the normal operating of motor body.
In conclusion, the beneficial technical effects of the invention are as follows:
1. before the motor body is started, the motor body is heated after being electrified and heated by the heating sheet, so that the evaporation speed of water on the motor body is accelerated, and meanwhile, the steam expands outwards along the convection holes and the air holes after being heated and expanded, so that the discharge of the steam is accelerated, the motor burning accident caused by the damp of the motor is avoided, and the service life of the motor is prolonged; meanwhile, convection of gas molecules is intensified, so that discharge of water vapor is accelerated, and a dehumidification effect is achieved;
2. when the motor body runs, the impeller is driven to rotate, the impeller drives the centrifugal cylinder to rotate, the centrifugal cylinder drives the arc-shaped sheet to rotate, the arc-shaped sheet cuts air when rotating, and the air is pushed to the motor body along the axial direction through the arc-shaped surface; when the arc-shaped sheets rotate, air in the centrifugal cylinder is driven to do centrifugal motion, the air enters between the adjacent arc-shaped sheets after being spirally pressurized, and is blown to the motor body under the guidance of the arc-shaped sheets, so that the air speed on the surface of the motor body is improved, and the overflow and dispersion of water vapor are accelerated; the diameter of one side of the air guide ring close to the motor body is larger than that of the other side of the air guide ring close to the motor body, so that the opening area of the air inlet side of the impeller is increased, the air is convenient to gather, meanwhile, the opening area of the air outlet side of the impeller is reduced, the air pressure is improved, the air speed of the surface of the motor body is improved, and the dehumidification effect of the motor body is improved;
3. when the ventilating cover is opened, the air flow exchange between the motor body and the outside is accelerated, so that the drying of the motor body is accelerated, the discharge of water vapor is accelerated, and meanwhile, an operator can conveniently open the shell to check faults and maintain.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged, fragmentary view of the present invention, showing primarily the locking lever;
fig. 3 is an exploded view of a portion of the structure of the present invention, showing primarily the heating strips.
Reference numerals: 1. a motor body; 11. a convection hole; 12. air holes; 13. a fan blade; 14. a base; 2. a housing; 21. a flow guide cavity; 22. a vent cover; 3. a dehumidification mechanism; 31. a heating plate; 311. a heat conductive layer; 32. a counter shaft; 33. an impeller; 331. a centrifugal cylinder; 332. an arc-shaped sheet; 333. a wind guide ring; 34. a flow guiding fan; 35. drying the bag; 4. a temperature sensor; 5. a locking member; 51. a barb; 511. a guide block; 52. a fixed seat; 521. a chute; 53. a locking lever; 531. a card slot; 532. an elastic member; 54. a bolt; 55. and (4) rotating the rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the three-phase asynchronous motor for the anti-explosion fan disclosed by the invention comprises a motor body 1, a casing 2 sleeved outside the motor body 1, fan blades 13 coaxially fixed with an output shaft of the motor body 1, and a dehumidifying mechanism 3 arranged on the motor body 1 and used for dehumidifying. The fan blades 13 are distributed at equal angle intervals around the output shaft of the motor body 1, and the motor body 1 drives the fan blades 13 to rotate when rotating, so that the ventilation effect is achieved, and the fan effect is achieved.
The casing 2 includes a base 14 welded and fixed on the top of the motor body 1, and two ventilation covers 22 hinged to the base 14, the base 14 is in a long strip shape, and the base 14 is distributed along the axial direction of the motor body 1. Two ventilation lid 22 along base 14 symmetric distribution and rotation opposite direction, ventilation lid 22 lid is established on motor body 1, and ventilation lid 22 is the arc and attached on motor body 1 outer wall.
A locking piece 5 is arranged between one side of the ventilation cover 22 far away from the rotary connection part and the motor body 1. Combine shown in fig. 2, retaining member 5 is including setting up barb 51 on the one side that keeps away from its rotation junction at vent flap 22, the fixing base 52 of setting on the outer wall of motor body 1, wear to locate in the fixing base 52 and with the fixing base 52 lock lever 53 of being connected that slides, and the elastic component 532 of being connected with lock lever 53, set up the spout 521 that supplies lock lever 53 to slide and connect on the fixing base 52, spout 521 bottom extends and runs through fixing base 52 to barb 51 side, elastic component 532 is connected with spout 521 one end lateral wall, when barb 51 removed to in the spout 521 lock lever 53 slides, barb 51 sunken side cooperates with barb 51 joint this moment. Barb 51 is L shape and with vent flap 22 lateral wall welded fastening, and the sunken side of barb 51 sets up towards the axial both ends tip of motor body 1. The sliding groove 521 is L-shaped, the locking rod 53 and the barb 51 converge at the turning point of the sliding groove 521 when sliding, the elastic member 532 is sleeved on the locking rod 53, one end of the elastic member abuts against the locking rod 53, and the other end of the elastic member is welded and fixed with the side wall of the sliding groove 521.
The barb 51 is provided with a guide block 511, the guide block 511 and the barb 51 are integrally formed, the guide block 511 is triangular, one end of the guide block 511 facing the sliding groove 521 is provided with an inclined surface inclined to one side of the locking rod 53, the locking rod 53 is tightly abutted to the inclined surface of the guide block 511 after the locking rod 53 is clamped with the barb 51, and one side of the guide block 511 far away from the sliding groove 521 is provided with an inclined surface facing the ventilation cover 22. A bolt 54 is arranged on the fixed seat 52 in parallel with the locking rod 53, the bolt 54 is in threaded connection with the fixed seat 52, and a rotating rod 55 is hinged on the bolt 54. The locking rod 53 is in a long strip shape, and a cylindrical limiting block is disposed at one end of the locking rod, which penetrates through the fixing seat 52, and a clamping groove 531, which is in insertion fit with the rotating rod 55, is formed on the limiting block.
When the barb 51 is inserted into the sliding groove 521, one end of the locking rod 53 is in contact with the inclined surface of the guide block 511, so that the locking rod 53 slides along the inclined surface of the guide block 511 and the space of the sliding groove 521 is reserved for the barb 51 to be inserted, the workload required for shifting the locking rod 53 is reduced, and the efficiency is improved. The bull stick 55 rotates to the cooperation of pegging graft with draw-in groove 531 of locking lever 53, the bull stick 55 drives bolt 54 to rotate when rotating simultaneously, bolt 54 drives locking lever 53 when rotating and is close to guide block 511, and locking lever 53 one end is along the one side inclined plane of guide block 511 towards vent flap 22, drive barb 51 and go deep into in the spout 521, with this make vent flap 22 be close to fixing base 52, reduce the gap between vent flap 22 and the motor body 1, avoid impurity such as dust to get into in the motor body 1, avoid the dust to influence the normal operating of motor body 1.
Referring to fig. 1 and 3, the dehumidifying mechanism 3 includes a plurality of heating fins 31 disposed on the inner wall of the casing 2 and distributed around the periphery of the motor body 1 at equal angles, and a plurality of air holes 12 are opened at two ends of the motor body 1 along the axial direction thereof. The heating plate 31 is long and is distributed along the axial direction of the output shaft of the motor body 1, the heating plate 31 is heated in an electrified mode, the heating plate 31 is fixedly connected with the shell 2 in an inserting mode, a heat conduction layer 311 is arranged between the heating plate 31 and the motor body 1, the heat conduction layer 311 is made of aluminum, so that the heating plate 31 is prevented from being directly contacted with the motor body 1 to enable heat to be gathered, the phenomenon that the motor body 1 is damaged or the motor body 1 is accelerated due to high temperature is avoided, and the motor body 1 is protected. The air hole 12 is opposite to the fan blade 13, and the scattered star that goes up of the circumferential surface of motor body 1 is equipped with a plurality of circular shape convection current holes 11. The air flow formed by the fan blades 13 is blown into the motor body 1 through the air holes 12, so that the speed of the air flow in the motor body 1 is increased, and the discharge of water vapor is accelerated.
The heating of the heating sheet 31 can heat the motor body 1, so that when water on the motor body 1 is evaporated, the heat of the heating sheet 31 is absorbed, and after the water is evaporated, the heat of the heating sheet 31 is accumulated, which is easy to accelerate the line aging of the motor body 1 and even damage the motor body 1. A temperature sensor 4 for detecting the temperature of the motor body 1 is arranged in the casing 2, a controller electrically connected with the temperature sensor 4 for receiving an electric signal and a contact switch electrically connected with the heating plate 31 for controlling the on-off of power supply are arranged on the casing 2. The temperature sensor 4 is fixedly inserted into the inner wall of the machine shell 2, the temperature sensor 4 adopts a WZPM-201 temperature probe, and the detection precision of the WZPM-201 temperature probe is high, so that the temperature of the motor body 1 is accurately detected and timely triggered.
The controller is fixed on the outer side of the motor body 1 through screws, the controller adopts a DRV8871 type electric control box, the contact switch adopts an electromagnetic valve, and the controller is electrically connected with the contact switch to control the contact switch to be opened or closed. When motor body 1's temperature is higher, temperature sensor 4 triggers and sends the signal of telecommunication to the controller, and the disconnection of controller control contact switch to this makes the heating strip stop heating, avoids motor body 1 heat to gather and makes motor body 1 take place to damage or accelerate the circuit ageing, thereby protection motor body 1.
The outer side of the motor body 1 in the casing 2 is provided with a diversion cavity 21 communicated with the interior of the motor body 1, the dehumidifying mechanism 3 further comprises a diversion fan 34 arranged in the diversion cavity 21, the diversion cavity 21 is square, the length direction of the diversion cavity is consistent with the axial direction of the motor body 1, and the diversion cavities 21 are two and are respectively positioned on the two sides of the motor body 1 close to the base 14. The diversion fan 34 adopts a small fan, and the air outlet direction of the diversion fan 34 forms an included angle with the axial direction of the motor body 1 and faces away from the convection hole 11 side. The air inlet of the guide fan 34 is provided with a drying bag 35, the drying bag 35 is fixedly bonded with the surface of the motor body 1 through strong glue, drying agents such as activated carbon are filled in the drying bag 35, and the drying bag 35 is opposite to the air hole 12. The desiccant absorbs water vapor on the motor body 1, thereby achieving a dehumidifying effect. Meanwhile, the drying bag 35 is positioned at the air inlet of the flow guiding fan 34, so that water vapor of the air entering the motor body 1 is removed, the drying in the motor body 1 is kept, and the motor body 1 is prevented from being damaged due to the short circuit phenomenon.
Before motor body 1 operates, the heating strip heats motor body 1 in order to accelerate the evaporation of water, and water conservancy diversion fan 34 improves the air velocity on motor body 1 surface simultaneously, accelerates the convection current of air in order to accelerate the sparse of vapor, avoids the vapor to seal in casing 2 or motor body 1 and make the vapor condensation, influences the dehumidification effect. The air outlet direction of the flow guiding fan 34 forms an included angle with the axial direction of the motor body 1, so that negative pressure is formed on one side, close to the motor body 1, of the flow guiding fan 34, and water vapor generated by evaporation in the motor body 1 is discharged out of the motor body 1 under the air pressure, so that the dehumidification effect is improved.
The motor body 1 adopts a double-shaft extension motor body, a counter shaft 32 is coaxially fixed at one end of a rotor of the motor body 1 far away from an output shaft of the motor body, an impeller 33 is coaxially fixed on the counter shaft 32, the impeller 33 comprises a centrifugal cylinder 331 connected with the counter shaft 32, and a plurality of arc-shaped sheets 332 arranged on the inner wall of the centrifugal cylinder 331 at intervals in a surrounding manner. The centrifugal cylinder 331 is circular and has a central axis coinciding with the rotation axis of the output shaft of the motor body 1, one side of the arc-shaped piece 332 away from the auxiliary shaft 32 is welded and fixed with the inner wall of the centrifugal cylinder 331, the arc-shaped piece 332 is arc-shaped along the axial contour of the motor body 1, and an included angle is formed between the arc-shaped piece 332 and the axial direction of the centrifugal cylinder 331. The auxiliary shaft 32 drives the arc-shaped pieces 332, the arc-shaped pieces 332 drive air in the centrifugal cylinder 331 to do centrifugal motion when rotating, the air enters between the adjacent arc-shaped pieces 332 after being spirally pressurized, and is blown to the motor body 1 under the guidance of the arc-shaped pieces 332, so that the air speed on the surface of the motor body 1 is improved, the overflow of water vapor is accelerated, and the dehumidification efficiency is improved.
An air guide ring 333 is arranged between the output shaft of the motor body 1 and the centrifugal cylinder 331 on the impeller 33, the air guide ring 333 is funnel-shaped, the air guide ring 333 is coaxially fixed with the auxiliary shaft 32, and the air guide ring 333 is welded and fixed with the arc-shaped sheet 332. The diameter of one side of the air guide ring 333 close to the motor body 1 is larger than that of the other side, so that the opening area of the air inlet side of the impeller 33 is increased, the air is convenient to gather, meanwhile, the opening area of the air outlet side of the impeller 33 is reduced, the air pressure is improved, the air speed on the surface of the motor body 1 is improved, and the dehumidification effect of the motor body 1 is improved.
The implementation principle of the embodiment is as follows: before motor body 1 opened, operating personnel opened contact switch and made heating plate 31 circular telegram, heated motor body 1 through heating plate 31 for the evaporation rate of the water on the motor body 1. Meanwhile, the water vapor expands outwards along the convection holes 11 and the air holes 12 after being heated, so that the discharge of the water vapor is accelerated. Meanwhile, after the heated temperature of the air rises, the convection of gas molecules is intensified, so that the discharge of water vapor is accelerated, and the dehumidification effect is achieved. And meanwhile, the ventilation cover 22 is opened, and the air flow exchange between the motor body 1 and the outside is accelerated, so that the drying of the motor body 1 is accelerated, and the discharge of water vapor is accelerated. And meanwhile, the operator can conveniently open the shell 2 to check faults and maintain. And when the vent cover 22 is closed, the dust entering the motor body 1 through the convection hole 11 is reduced, and the blockage of the convection hole 11 to enable dehumidification is avoided.
The temperature sensor 4 detects the temperature of the motor body 1, and when the motor body 1 is dried, heat is collected and the temperature sensor 4 is triggered, the controller controls the contact switch to be disconnected. Then, the operator slides the locking rod 53, the elastic member 532 compresses to generate elastic force and simultaneously gives up space to enable the barb 51 to be inserted into the sliding groove 521, and the locking rod 53 is clamped and matched with the barb 51 under the elastic force action of the elastic member 532 when sliding along the sliding groove 521, so that the ventilating cover 22 is locked with the fixed seat 52, the ventilating cover 22 is locked, and the phenomenon that the ventilating cover 22 is loosened to enable the motor body 1 to be unbalanced to generate noise or break down when the motor body 1 runs is avoided.
When the motor body 1 operates, the motor body 1 drives the auxiliary shaft 32 to rotate, the auxiliary shaft 32 drives the impeller 33 to rotate, the impeller 33 drives the centrifugal cylinder 331 to rotate, the centrifugal cylinder 331 drives the arc-shaped sheet 332 to rotate, the arc-shaped sheet 332 cuts air when rotating, and the air is pushed to the motor body 1 along the axial direction through the arc-shaped surface, so that the air speed on the surface of the motor body 1 is improved, the motor burning accident caused by the damp of the motor is avoided, and the service life of the motor is prolonged.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an explosion-proof three-phase asynchronous motor for fan which characterized in that: comprises a motor body (1), a casing (2) sleeved outside the motor body (1), fan blades (13) coaxially fixed with an output shaft of the motor body (1), and a dehumidifying mechanism (3) arranged on the motor body (1) and used for dehumidifying, wherein the dehumidifying mechanism (3) comprises a plurality of heating sheets (31) which are arranged on the inner wall of the casing (2) and are distributed around the motor body (1) at equal angles on the circumferential side, a plurality of air holes (12) are arranged at the two ends of the motor body (1) along the axial direction, a heat conducting layer (311) is arranged between the heating sheets (31) and the motor body (1), the air holes (12) are opposite to the fan blades (13), a plurality of convection holes (11) are arranged on the circumferential surface of the motor body (1), a flow guiding cavity (21) communicated with the motor body (1) is arranged at the outer side of the motor body (1) in the casing (2), dehumidification mechanism (3) are still including setting up water conservancy diversion fan (34) in water conservancy diversion chamber (21), the air-out direction of water conservancy diversion fan (34) is the contained angle and is dorsad to discharge orifice (11) side with the axial of motor body (1), the air intake department of water conservancy diversion fan (34) sets up dry bag (35), dry bag (35) intussuseption is filled with the drier, dry bag (35) are relative with gas pocket (12).
2. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 1, wherein: the motor is characterized in that a temperature sensor (4) for detecting the temperature of the motor body (1) is arranged in the casing (2), a controller which is electrically connected with the temperature sensor (4) to receive an electric signal and a contact switch which is electrically connected with the heating sheet (31) to control the on-off of power supply are arranged on the casing (2), and the controller is electrically connected with the contact switch to control the on-off of the contact switch.
3. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 1, wherein: an auxiliary shaft (32) is coaxially fixed to one end, far away from an output shaft, of a rotor of the motor body (1), an impeller (33) is coaxially fixed to the auxiliary shaft (32), the impeller (33) comprises a centrifugal cylinder (331) connected with the auxiliary shaft (32), and a plurality of arc-shaped sheets (332) are arranged on the inner wall of the centrifugal cylinder (331) in a surrounding mode around the auxiliary shaft (32) at intervals, and an included angle is formed between each arc-shaped sheet (332) and the centrifugal cylinder (331) in the axial direction.
4. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 3, wherein: a funnel-shaped air guide ring (333) is arranged between the output shaft of the motor body (1) and the centrifugal cylinder (331) on the impeller (33), and the diameter of one side, close to the motor body (1), of the air guide ring (333) is larger than that of the other side.
5. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 1, wherein: casing (2) include at least two with motor body (1) top rotate ventilation lid (22) of being connected, ventilation lid (22) lid is established on motor body (1), ventilation lid (22) symmetry sets up and rotation direction is opposite, it rotates one side of junction and is provided with retaining member (5) between motor body (1) to keep away from ventilation lid (22).
6. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 5, wherein: retaining member (5) including set up barb (51) on keeping away from its one side of rotating the junction in ventilation lid (22), set up fixing base (52) on motor body (1) outer wall, wear to locate in fixing base (52) and with fixing base (52) the lock lever (53) of being connected that slide to and the elastic component (532) of being connected with lock lever (53), set up spout (521) that supply lock lever (53) to slide the connection on fixing base (52), spout (521) bottom extends and runs through fixing base (52) to barb (51) side, elastic component (532) are connected with spout (521) one end lateral wall, when barb (51) move to in spout (521) lock lever (53) slip barb (51) sunken side and with barb (51) joint cooperation.
7. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 6, wherein: the barb (51) is provided with a guide block (511), and one end of the guide block (511) facing the sliding groove (521) is provided with an inclined surface inclined to one side of the locking rod (53).
8. The three-phase asynchronous motor for the explosion-proof fan as claimed in claim 7, wherein: one side that spout (521) were kept away from in guide block (511) is provided with the inclined plane towards ventilating cover (22), behind check lock lever (53) and barb (51) joint check lock lever (53) support tightly with the inclined plane of guide block (511), be provided with bolt (54) with check lock lever (53) parallel on fixing base (52), bolt (54) and fixing base (52) threaded connection, it is provided with bull stick (55) to rotate on bolt (54), the one end that spout (521) were kept away from in check lock lever (53) is seted up and is pegged graft complex draw-in groove (531) with bull stick (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076612.1A CN109687666B (en) | 2019-01-26 | 2019-01-26 | Three-phase asynchronous motor for explosion-proof fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076612.1A CN109687666B (en) | 2019-01-26 | 2019-01-26 | Three-phase asynchronous motor for explosion-proof fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109687666A CN109687666A (en) | 2019-04-26 |
| CN109687666B true CN109687666B (en) | 2020-03-24 |
Family
ID=66194107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910076612.1A Active CN109687666B (en) | 2019-01-26 | 2019-01-26 | Three-phase asynchronous motor for explosion-proof fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687666B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030344B (en) * | 2019-11-12 | 2021-04-20 | 超音速智能科技(浙江)有限公司 | High-speed motor |
| CN110855051A (en) * | 2019-11-22 | 2020-02-28 | 衡阳市大力成泵业制造有限责任公司 | Explosion-proof type motor supporting device for coal mine |
| CN110925224B (en) * | 2019-12-10 | 2021-04-16 | 萍乡市南风风机厂(普通合伙) | Moistureproof axial flow fan |
| CN112217341B (en) * | 2020-09-28 | 2021-10-12 | 肇东市华州石油机械设备有限公司 | Motor cooling assembly with temperature detection device |
| CN114400816B (en) * | 2021-12-02 | 2022-11-01 | 江苏航天动力机电有限公司 | Permanent magnet motor with adjustable housing of multidirectional structure |
| CN114629285B (en) * | 2022-05-17 | 2022-10-18 | 深圳正为格智能科技有限公司 | Electric vehicle motor thermal stabilization device and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5298824A (en) * | 1989-10-24 | 1994-03-29 | Robert Bosch Gmbh | Covering for electrical machines |
| CN104377911A (en) * | 2014-11-18 | 2015-02-25 | 新疆金风科技股份有限公司 | Humidity removing method, device and system of wind driven generator |
| CN104682640A (en) * | 2015-02-13 | 2015-06-03 | 广西桂冠电力股份有限公司大化水力发电总厂 | Combined drying method of generator stator |
| CN205231880U (en) * | 2015-12-21 | 2016-05-11 | 江苏圣彼德机电股份有限公司 | Novel motor |
| CN205657566U (en) * | 2016-06-02 | 2016-10-19 | 福建华电邵武发电有限公司 | Heating device |
| CN106451923A (en) * | 2016-12-12 | 2017-02-22 | 张家港市优希宏达机电厂 | Automatic damp-proof motor |
-
2019
- 2019-01-26 CN CN201910076612.1A patent/CN109687666B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5298824A (en) * | 1989-10-24 | 1994-03-29 | Robert Bosch Gmbh | Covering for electrical machines |
| CN104377911A (en) * | 2014-11-18 | 2015-02-25 | 新疆金风科技股份有限公司 | Humidity removing method, device and system of wind driven generator |
| CN104682640A (en) * | 2015-02-13 | 2015-06-03 | 广西桂冠电力股份有限公司大化水力发电总厂 | Combined drying method of generator stator |
| CN205231880U (en) * | 2015-12-21 | 2016-05-11 | 江苏圣彼德机电股份有限公司 | Novel motor |
| CN205657566U (en) * | 2016-06-02 | 2016-10-19 | 福建华电邵武发电有限公司 | Heating device |
| CN106451923A (en) * | 2016-12-12 | 2017-02-22 | 张家港市优希宏达机电厂 | Automatic damp-proof motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109687666A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109687666B (en) | Three-phase asynchronous motor for explosion-proof fan | |
| CN105914621A (en) | Intelligent outdoor terminal box dehumidification device | |
| CN109687643B (en) | Three-phase asynchronous motor for high-temperature exhaust fan | |
| KR101464705B1 (en) | Blower motor having bearing air cooling structure | |
| CN112864929A (en) | Positive pressure type explosion-proof power distribution cabinet and use method thereof | |
| CN203928154U (en) | A kind of wet device of control with rotary door structure | |
| CN220307652U (en) | Integrated measurement and control device | |
| CN111064096B (en) | Prevent condensation looped netowrk cabinet | |
| CN201018355Y (en) | Anti-superheating electric motor | |
| CN108175360B (en) | Air intake and exhaust system of equipment and dish washer | |
| CN209860739U (en) | Heat dissipation type AC induction motor for fan | |
| CN213580598U (en) | Corrosion detector for atmosphere detection | |
| CN212033950U (en) | Speed reduction micro motor | |
| CN204312376U (en) | A kind of smoke evacuation motor | |
| CN210137111U (en) | Block terminal that moisture resistance is high | |
| WO2013030444A2 (en) | Arrangement and method for cooling an electric machine | |
| CN216287881U (en) | Variable-pitch system limiting high-voltage transformer | |
| JP3844252B2 (en) | Evaporator | |
| JP6403400B2 (en) | Wind exhaust generator | |
| CN214742206U (en) | Marine explosion-proof centrifugal fan | |
| CN222214920U (en) | Block terminal with dehumidification function | |
| CN208398256U (en) | A kind of Domestic dehumidifying device | |
| CN209896855U (en) | Special motor for fan with built-in protection device | |
| CN210565225U (en) | Fan convenient to heat dissipation | |
| CN219084977U (en) | Monitoring device of power supply system for fire control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A three-phase asynchronous motor for explosion-proof fans Granted publication date: 20200324 Pledgee: Lianghu Sub-branch of Zhejiang Shangyu Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG CHAOSHUN ELECTROMECHANICAL Co.,Ltd. Registration number: Y2024980036589 |