CN213879430U - Encapsulated cooling fan motor - Google Patents

Encapsulated cooling fan motor Download PDF

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Publication number
CN213879430U
CN213879430U CN202022979076.7U CN202022979076U CN213879430U CN 213879430 U CN213879430 U CN 213879430U CN 202022979076 U CN202022979076 U CN 202022979076U CN 213879430 U CN213879430 U CN 213879430U
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China
Prior art keywords
stator
plate
urceolus
coil
steel sheet
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CN202022979076.7U
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Chinese (zh)
Inventor
赵岳军
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Shanghai Junhong Electromechanical Technology Co ltd
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Shanghai Junhong Electromechanical Technology Co ltd
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Priority to CN202022979076.7U priority Critical patent/CN213879430U/en
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Abstract

The utility model provides an encapsulation formula radiator fan motor, including stator and rotor, the stator includes the stator board and is fixed in the stator coil on the stator board, the stator coil includes silicon steel sheet iron core and sets up the coil winding on silicon steel sheet iron core, silicon steel sheet iron core is fixed in on the stator board through the bolt, the stator coil passes through epoxy embedment with silicon steel sheet iron core and coil winding cladding wherein, the epoxy contacts with the stator board after the encapsulation and transmits the heat; the upper surface of the stator plate is provided with a plurality of concentrically arranged heat dissipation ribs. The utility model has the advantages of good heat dissipation effectively improves coil winding partial discharge stability, and the protection coil winding does not receive external foreign matter to damage, is favorable to reducing the motor noise.

Description

Encapsulated cooling fan motor
Technical Field
The utility model relates to a motor field, concretely relates to encapsulation formula radiator fan motor.
Background
The motor is common in daily life, wherein the fan motor can make certain requirements for the axial length thereof due to the installation position of the fan motor, so the axial length of the general fan motor is smaller, for some large fans, the torque requirement is also required to be met while the axial length is met, the size of the general fan motor is smaller, the torque is also smaller, so the outer diameter of the general fan motor is larger, and meanwhile, the performances such as insulation (explosion resistance) and the like are also required to be considered, so the general fan motor can be made into a closed shell, the air fluidity inside and outside the motor is reduced as much as possible, the occurrence of the situations such as electric leakage and the like caused by dust entering the motor is avoided, but the stator coil of the fan motor is directly influenced, the existing fan motor generally has no larger contact area with the stator shell, so the heat dissipation capacity in the stator coil is easy to accumulate, insulation breakdown and the like are also likely to occur.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a good heat dissipation effectively improves coil winding partial discharge stability, and protection coil winding does not receive external foreign matter to damage, is favorable to reducing the encapsulated radiator fan motor of motor noise.
Aiming at the problems, the following technical scheme is provided: an encapsulation type cooling fan motor comprises a stator and a rotor, wherein the stator comprises a stator plate and a stator coil fixed on the stator plate, the stator coil comprises a silicon steel sheet iron core and a coil winding arranged on the silicon steel sheet iron core, the silicon steel sheet iron core is fixed on the stator plate through a bolt, the stator coil coats the silicon steel sheet iron core and the coil winding through epoxy resin encapsulation, and the epoxy resin is in contact with the stator plate after encapsulation to transfer heat; the upper surface of the stator plate is provided with a plurality of concentrically arranged heat dissipation ribs.
In the structure, the stator coil adopts an epoxy resin packaging technology, the coil winding is completely sealed in the epoxy resin, the enameled wire of the coil winding and the epoxy resin are completely solidified into a whole, and no gap exists between the solidified epoxy resin and the whole coil winding, the silicon steel sheet iron core and the stator plate, so that the overall mechanical strength of the motor stator coil is improved, and meanwhile, the heat dissipation performance of the motor stator coil is better, and the service life of the motor is prolonged; because the epoxy resin is adopted for packaging, the enameled wire of the coil winding does not need to adopt the conventional paint dipping process, no volatile organic matter is released, and the epoxy resin is dissolved by a proper solvent, so that the recycling of the stator coil is facilitated, and the environment-friendly requirement advocated at present is met. Through experimental tests, the heat dissipation efficiency of the stator coil encapsulated by the epoxy resin is higher than that of the stator coil of the conventional paint dipping process (about 20 percent of improvement). The epoxy resin has high thermal shock resistance, halogen-free flame retardance, excellent oil resistance and weather resistance, can improve the partial discharge stability of the coil winding, protects the coil winding from being damaged by external foreign matters, and is beneficial to reducing the noise of the motor.
The utility model discloses further set up to, the rotor includes the urceolus and is located the bottom plate of urceolus bottom, the bottom plate passes through the bolt fastening on the terminal surface of urceolus bottom, still be equipped with a plurality of settings of urceolus circumference direction equipartition along the bottom plate to even fixed plate as an organic whole with the bottom plate, the flabellum mounting hole that the fixed plate set up toward the radial direction extension of urceolus and be equipped with a plurality of intervals on the extending direction, the urceolus inner wall is equipped with a plurality of magnets of arranging along urceolus inner wall circumference direction equipartition, stator coil is located the urceolus.
In the structure, the bottom plate is integrally cut and formed, the fixing plate integrally connected with the bottom plate is reserved at the outer edge position of the bottom plate, the outer cylinder is butted with the bottom plate in a bolt fixing mode to form a shell of the rotor, the integral structural strength of the rotor is ensured, the rotor shell can be obtained only by purchasing tubular outer cylinder materials and plate-shaped materials for cutting and combining, the defect that the traditional cast aluminum shell needs die sinking casting is overcome, the production cost is greatly reduced, multi-specification production is favorably realized, the modification of product size parameters is more convenient, and the modification of pressure cast mold parameters is not involved; the mode that the fixed plate directly links with the bottom plate is integrative can increase the effective joint strength when the flabellum is installed, improves product operational reliability by a wide margin.
The utility model discloses further set up to, the bottom plate center is equipped with the bearing housing, be equipped with the bearing in the bearing housing, the bearing inner circle is equipped with the connecting axle, the connecting axle is connected fixedly with the stator board.
In the structure, the bearing outer ring is in interference fit with the inner wall of the bearing sleeve, and after the bearing inner ring is installed in interference fit with the connecting shaft, the upper end of the connecting shaft is fixedly connected with the stator plate through the bolt, so that the installation rapidity is ensured.
The utility model discloses further set up to, the stator plate external diameter is greater than stator coil and equals with the urceolus external diameter, urceolus top terminal surface is close to the terminal surface that urceolus inner wall position department was equipped with the epirelief and keeps off the ring, be equipped with on the stator plate and keep off the ring with the terminal surface when the rotor rotates and be clearance fit's terminal surface slot.
In the structure, the end face baffle ring and the end face groove can reduce the air flow inside and outside the rotor, so as to ensure the internal clean degree, avoid impurities such as dust from entering the stator coil, and simultaneously, the matching epoxy resin encapsulation can further improve the insulativity of the coil winding, and the heat is transferred to the stator plate as a heat-conducting medium through the epoxy resin under the condition that the air flow is lacked inside the rotor, so that the heat radiation performance is improved by about 20 percent compared with the heat radiation performance without the epoxy resin encapsulation.
The utility model discloses further set up to, be equipped with on the stator board and be used for the wiring mouth of wiring for the power supply of coil winding and be used for installing fixed mounting hole to the motor.
The utility model has the advantages that: the stator coil adopts the epoxy resin packaging technology, the coil winding is completely sealed in the epoxy resin, the enameled wire of the coil winding and the epoxy resin are completely cured into a whole, and no gap exists between the cured epoxy resin and the whole coil winding, the silicon steel sheet iron core and the stator plate, so that the overall mechanical strength of the motor stator coil is improved, the heat dissipation performance of the motor stator coil is better, and the service life of the motor is prolonged; because the epoxy resin is adopted for packaging, the enameled wire of the coil winding does not need to adopt the conventional paint dipping process, no volatile organic matter is released, and the epoxy resin is dissolved by a proper solvent, so that the recycling of the stator coil is facilitated, and the environment-friendly requirement advocated at present is met. Through experimental tests, the heat dissipation efficiency of the stator coil encapsulated by the epoxy resin is higher than that of the stator coil of the conventional paint dipping process (about 20 percent of improvement). The epoxy resin has high thermal shock resistance, halogen-free flame retardance, excellent oil resistance and weather resistance, can improve the partial discharge stability of the coil winding, protects the coil winding from being damaged by external foreign matters, and is beneficial to reducing the noise of the motor.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the full-section structure of the present invention.
Fig. 3 is a schematic diagram of the explosion structure of the present invention.
Fig. 4 is a schematic diagram of the structure of the explosion local section of the present invention.
Fig. 5 is a schematic diagram of the whole stator coil explosion structure according to the present invention.
The reference numbers in the figures mean: 10-a stator; 11-a stator plate; 111-heat dissipating ribs; 112-end face grooves; 12-a stator coil; 121-silicon steel sheet iron core; 122-coil windings; 123-epoxy resin; 13-a wiring port; 14-mounting holes; 20-a rotor; 21-outer cylinder; 211-a magnet; 212-end stop ring; 22-a base plate; 221-a fixing plate; 222-fan blade mounting holes; 23-a bearing sleeve; 231-a bearing; 24-connecting shaft.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 5, the potting type heat dissipation fan motor shown in fig. 1 to 5 includes a stator 10 and a rotor 20, the stator 10 includes a stator plate 11 and a stator coil 12 fixed on the stator plate 11, the stator coil 12 includes a silicon steel sheet core 121 and a coil winding 122 disposed on the silicon steel sheet core 121, the silicon steel sheet core 121 is fixed on the stator plate 11 by bolts, the stator coil 12 encapsulates the silicon steel sheet core 121 and the coil winding 122 therein by potting epoxy resin 123, and the epoxy resin 123 contacts with the stator plate 11 after potting to transfer heat; the upper surface of the stator plate 11 is provided with a plurality of concentrically arranged heat dissipation ribs 111.
In the structure, the stator coil 12 adopts the epoxy resin 123 encapsulation technology, the coil winding 122 is completely sealed in the epoxy resin 123, the enameled wire of the coil winding 122 and the epoxy resin 123 are completely cured into a whole, and no gap exists between the cured epoxy resin 123 and the whole coil winding 122, the silicon steel sheet iron core 121 and the stator plate 11, so that the overall mechanical strength of the motor stator coil 12 is improved, and meanwhile, the heat dissipation performance of the motor stator coil is better, and the service life of the motor is prolonged; because the epoxy resin 123 is adopted for packaging, the enameled wire of the coil winding 122 does not need to adopt a conventional paint dipping process, no volatile organic matter is released, and the epoxy resin 123 is dissolved by a proper solvent, so that the recycling of the stator coil 12 is facilitated, and the environment-friendly requirement advocated at present is met. Through experimental tests, the stator coil 12 encapsulated by the epoxy resin 123 has higher heat dissipation efficiency (about 20% improvement) than the stator coil 12 of the conventional paint dipping process. The epoxy resin 123 has high thermal shock resistance, halogen-free flame retardance, excellent oil resistance and weather resistance, can improve the partial discharge stability of the coil winding 122, protects the coil winding 122 from being damaged by external foreign matters, and is beneficial to reducing the noise of the motor.
In this embodiment, the rotor 20 includes an outer cylinder 21 and a bottom plate 22 located at the bottom of the outer cylinder 21, the bottom plate 22 is fixed on an end surface at the bottom of the outer cylinder 21 by bolts, the bottom plate 22 is further provided with a plurality of fixing plates 221 uniformly distributed along the circumferential direction of the outer cylinder 21 and integrally connected with the bottom plate 22, the fixing plates 221 extend in the radial direction of the outer cylinder 21 and are provided with a plurality of fan blade mounting holes 222 arranged at intervals in the extending direction, the inner wall of the outer cylinder 21 is provided with a plurality of magnets 211 uniformly distributed and arranged along the circumferential direction of the inner wall of the outer cylinder 21, and the stator coil 12 is located.
In the structure, the bottom plate 22 is integrally cut and formed, the fixing plate 221 integrally connected with the bottom plate 22 is reserved at the outer edge position of the bottom plate 22, the outer cylinder 21 is butted with the bottom plate 22 in a bolt fixing mode to form a shell of the rotor 20, the integral structural strength of the rotor is ensured, the shell of the rotor 20 can be obtained only by purchasing tubular outer cylinder 21 materials and plate-shaped materials for cutting and combining, the defect that the traditional cast aluminum shell needs die sinking and casting is overcome, the production cost is greatly reduced, multi-specification production is favorably realized, the modification of product size parameters is more convenient, and the modification of pressure casting die parameters is not involved; the mode that fixed plate 221 and bottom plate 22 are integrative directly connected can increase the effective joint strength when the flabellum is installed, improves product operational reliability by a wide margin.
In this embodiment, a bearing sleeve 23 is disposed at the center of the bottom plate 22, a bearing 231 is disposed in the bearing sleeve 23, a connecting shaft 24 is disposed on an inner ring of the bearing 231, and the connecting shaft 24 is fixedly connected to the stator plate 11.
In the structure, the outer ring of the bearing 231 is in interference fit with the inner wall of the bearing sleeve 23, and after the inner ring of the bearing 231 is installed in interference fit with the connecting shaft 24, the upper end of the connecting shaft 24 is fixedly connected with the stator plate 11 through the bolt, so that the installation rapidity is ensured.
In this embodiment, the stator plate 11 has an outer diameter larger than that of the stator coil 12 and equal to that of the outer cylinder 21, the end face of the top end of the outer cylinder 21 is provided with a raised end face baffle ring 212 at a position close to the inner wall of the outer cylinder 21, and the stator plate 11 is provided with an end face groove 112 which is in clearance fit with the end face baffle ring 212 when the rotor 20 rotates.
In the above structure, the end face baffle ring 212 and the end face groove 112 can reduce the air flow inside and outside the rotor 20 to ensure the internal cleanliness, and prevent impurities such as dust from entering the stator coil 12, and the insulation of the coil winding 122 can be further improved by matching with the potting of the epoxy resin 123, and the heat is transferred to the stator plate 11 by taking the epoxy resin 123 as a heat conducting medium under the condition that the air flow inside the rotor 20 is short, which improves the heat dissipation performance by about 20% compared with the condition that the potting of the epoxy resin 123 is not performed.
In this embodiment, the stator board 11 is provided with a wiring port 13 for wiring to supply power to the coil winding 122 and a mounting hole 14 for mounting and fixing the motor.
The utility model has the advantages that: the stator coil 12 adopts an epoxy resin 123 packaging technology, the coil winding 122 is completely sealed in the epoxy resin 123, an enameled wire of the coil winding 122 and the epoxy resin 123 are completely cured into a whole, and no gap exists between the cured epoxy resin 123 and the whole coil winding 122, the silicon steel sheet iron core 121 and the stator plate 11, so that the overall mechanical strength of the stator coil 12 of the motor is improved, the heat dissipation performance of the stator coil is better, and the service life of the motor is prolonged; because the epoxy resin 123 is adopted for packaging, the enameled wire of the coil winding 122 does not need to adopt a conventional paint dipping process, no volatile organic matter is released, and the epoxy resin 123 is dissolved by a proper solvent, so that the recycling of the stator coil 12 is facilitated, and the environment-friendly requirement advocated at present is met. Through experimental tests, the stator coil 12 encapsulated by the epoxy resin 123 has higher heat dissipation efficiency (about 20% improvement) than the stator coil 12 of the conventional paint dipping process. The epoxy resin 123 has high thermal shock resistance, halogen-free flame retardance, excellent oil resistance and weather resistance, can improve the partial discharge stability of the coil winding 122, protects the coil winding 122 from being damaged by external foreign matters, and is beneficial to reducing the noise of the motor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides an encapsulation formula radiator fan motor, includes stator and rotor, its characterized in that: the stator comprises a stator plate and a stator coil fixed on the stator plate, the stator coil comprises a silicon steel sheet iron core and a coil winding arranged on the silicon steel sheet iron core, the silicon steel sheet iron core is fixed on the stator plate through bolts, the stator coil coats the silicon steel sheet iron core and the coil winding through epoxy resin encapsulation, and the epoxy resin is in contact with the stator plate after encapsulation to transfer heat; the upper surface of the stator plate is provided with a plurality of concentrically arranged heat dissipation ribs.
2. The encapsulated radiator fan motor of claim 1, wherein: the rotor includes the urceolus and is located the bottom plate of urceolus bottom, the bottom plate passes through the bolt fastening on the terminal surface of urceolus bottom, still be equipped with a plurality of along urceolus circumferential direction equipartitions setting on the bottom plate to even fixed plate as an organic whole with the bottom plate, the flabellum mounting hole that the fixed plate set up toward urceolus radial direction extension and be equipped with a plurality of intervals on the extending direction, the urceolus inner wall is equipped with a plurality of magnets of arranging along urceolus inner wall circumferential direction equipartition, stator coil is located the urceolus.
3. The encapsulated radiator fan motor of claim 2, wherein: the stator plate is characterized in that a bearing sleeve is arranged in the center of the bottom plate, a bearing is arranged in the bearing sleeve, a connecting shaft is arranged on an inner ring of the bearing, and the connecting shaft is fixedly connected with the stator plate.
4. The encapsulated radiator fan motor of claim 2, wherein: the stator plate external diameter is greater than the stator coil and equals with the urceolus external diameter, urceolus top end face department of being close to urceolus inner wall position is equipped with the terminal surface of epirelief and keeps off the ring, be equipped with on the stator plate and keep off the ring with the terminal surface and be clearance fit's terminal surface slot when the rotor rotates.
5. The encapsulated radiator fan motor of claim 2, wherein: and the stator plate is provided with a wiring port and a mounting hole.
CN202022979076.7U 2020-12-08 2020-12-08 Encapsulated cooling fan motor Active CN213879430U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022979076.7U CN213879430U (en) 2020-12-08 2020-12-08 Encapsulated cooling fan motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022979076.7U CN213879430U (en) 2020-12-08 2020-12-08 Encapsulated cooling fan motor

Publications (1)

Publication Number Publication Date
CN213879430U true CN213879430U (en) 2021-08-03

Family

ID=77067218

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022979076.7U Active CN213879430U (en) 2020-12-08 2020-12-08 Encapsulated cooling fan motor

Country Status (1)

Country Link
CN (1) CN213879430U (en)

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