CN209994212U

CN209994212U - Single-phase series motor with good heat dissipation performance

Info

Publication number: CN209994212U
Application number: CN201921272793.7U
Authority: CN
Inventors: 顾雷
Original assignee: Qingdao Recono New Material Co Ltd
Current assignee: Qingdao Recono New Material Co Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-01-24
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a single-phase series excited motor with good heat dissipation, the periphery of the rotating shaft, which is positioned in the cavity part of the hollow cup winding, is sleeved with fan blades, the rotating joints of the motor shell and the convex ring column and the two ends of the rotating shaft are respectively provided with air vents along the axial direction, and one side of the surface of the rotating shaft, which is close to the air vents, is provided with a through seam, the through holes arranged on the motor shell and the convex ring column respectively communicate the cavity of the hollow cup winding with the external space of the motor; during the use, fan blade is rotatory along with the axis of rotation at a high speed, makes outside air current discharge through the air vent of bulge loop post department, the inner chamber of coreless winding and the air vent of motor housing department in proper order, and the air current flows in the process of flowing out from the axis of rotation both ends and all contacts with the surface of axis of rotation for the heat that axis of rotation department produced can be better dispelled, and the radiating effect promotes greatly, has improved the life of axis of rotation.

Description

Single-phase series motor with good heat dissipation performance

Technical Field

The utility model relates to a series motor technical field specifically is a good heat dissipation's single-phase series motor.

Background

The single-phase series motor is commonly called as a series motor and is named because an excitation winding and an excitation winding are connected in series to work. The single-phase series motor belongs to AC and DC dual-purpose motor, which can work by AC power supply and DC power supply. The motor mainly comprises a stator rotor and a bracket. The stator consists of salient pole iron core and exciting winding, and the rotor consists of non-salient pole iron core, armature winding, commutator, rotating shaft, etc. And a series circuit is formed between the excitation winding and the armature winding through the brush and the commutator. The series motor is widely applied to the fields of electric tools, kitchen supplies and floor care products due to the characteristics of wide adjustable range of rotating speed and large starting torque. In a rotor constituting a series motor, since the weight and the moment of inertia are greatly reduced and the loss of electric energy due to the formation of eddy currents by an iron core is eliminated, a coreless rotor is widely developed and applied.

However, the series motor in the prior art has certain disadvantages in the actual use process, such as:

at present, the fan blades are usually sleeved at the tail end of a rotating shaft of a widely used series motor, and when the rotating shaft rotates, the fan blades are driven to rotate so as to achieve the effect of air cooling on the motor, but the radiating effect of the rotating shaft with higher heat productivity is poor, and the service life of the rotating shaft is easy to reduce.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a good heat dissipation's single-phase series excited motor, its axis of rotation department can obtain good radiating effect, has improved the life of axis of rotation greatly, has solved the not good problem of axis of rotation department heat dissipation.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a good heat dissipation's single-phase series excited motor, includes motor housing, suit at the rear end cap of motor housing one end, bulge loop post and coreless winding, coreless winding suit is in the periphery of bulge loop post, the inner chamber axial lead department of coreless winding is provided with the axis of rotation, the commutator has been cup jointed to the peripheral one end of axis of rotation, the axis of rotation is located coreless winding inner chamber portion's peripheral cover is equipped with the fan blade, motor housing and bulge loop post with the rotation junction at axis of rotation both ends is provided with the air vent along the axial respectively, and the air vent is close to axis of rotation surface one side is provided with the through-hole, the through-hole of seting up on motor housing and the bulge loop post respectively will coreless winding inner chamber and the mutual intercommunication of motor exterior space.

Preferably, the rotating shaft and the periphery of one end, rotatably connected with the convex ring column, of the rotating shaft are sleeved with a first bushing, a bearing is arranged between the periphery of the first bushing and the convex ring column, a groove is formed in the inner side wall of the first bushing along the axial direction, an air inlet hole is formed in the extending direction of one end, located on the side face of the rear end cover, of the groove, and the other end of the groove in the first bushing is communicated with the inner cavity of the hollow cup winding.

Preferably, the peripheral cover of the one end that the axis of rotation and motor housing rotate to be connected is equipped with the second bush, the periphery of second bush with be provided with the bearing between the motor housing, and the second bush is located motor housing inside wall with peripheral cover between the coreless winding is equipped with the commutator, the inside wall of second bush is seted up flutedly along the axial, and the recess both ends respectively with coreless winding inner chamber, motor exterior space intercommunication.

Preferably, the groove in the first bushing is arc-shaped along the radial projection of the first bushing.

Preferably, the groove in the second bushing is arc-shaped along the radial projection of the second bushing.

Preferably, fins are arranged on the outer wall of the rotating shaft, which is located in the inner cavity of the coreless winding, and the fins are uniformly distributed on two sides of the fan blades.

Preferably, the fins are of circular thin-wall structures and are sleeved on the periphery of the rotating shaft.

Preferably, the side surfaces of the fins are provided with through holes in an annular array mode by taking the circle centers of the through holes as centers.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a peripheral cover that the axis of rotation of series excited machine is located coreless winding inner chamber part is equipped with fan blade, motor housing and bulge loop post and the rotation junction at axis of rotation both ends is provided with the air vent along the axial respectively, and the air vent is close to axis of rotation surface one side and is provided with the through-hole, the through-hole of seting up on motor housing and the bulge loop post communicates coreless winding inner chamber and motor exterior space each other respectively, during the use, fan blade is along with the high-speed rotation of axis of rotation, make outside air current get into coreless winding inner chamber after the air vent of bulge loop post department, discharge from the air vent of motor housing department again, constitute complete wind current channel, can in time dispel the heat that the motor work produced; and the air current flows in the process of flowing out from axis of rotation both ends and all contacts with the surface of axis of rotation for the heat that axis of rotation department produced can be better dispelled, and the radiating effect promotes greatly, has improved the life of axis of rotation.

Drawings

FIG. 1 is a schematic sectional view of the whole structure of the present invention;

FIG. 2 is a left side view of the whole structure of the present invention;

FIG. 3 is a right side view of the whole structure of the present invention;

fig. 4 is a schematic cross-sectional view of the integrated transducer of the present invention;

fig. 5 is the schematic cross-sectional view of the whole fin:

fig. 6 is a schematic cross-sectional view of the fan blade of the present invention.

In the figure: 1-motor housing; 11-rear end cap; 111-inlet holes; 12-a collar post; 2-a rotating shaft; 21-a fan blade; 22-a fin; 23-a first bushing; 24-a second bushing; 3-a coreless winding; 4-a commutator.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution, a single-phase series motor with good heat dissipation, comprising a motor housing 1, a rear end cap 11, a collar post 12 and a coreless winding 3, the coreless winding 3 is sleeved on the periphery of the collar post 12, a rotating shaft 2 is arranged on the axis of the inner cavity of the coreless winding 3, a commutator 4 is sleeved on the periphery of the rotating shaft 2, a fan blade 21 is sleeved on the periphery of the rotating shaft 2 at the inner cavity of the coreless winding 3, air holes are respectively arranged on the rotating joints of the motor housing 1 and the collar post 12 with the two ends of the rotating shaft 2 along the axial direction, and the through-hole is provided with the through-slot close to one side of the surface of the rotating shaft 2, the through-holes arranged on the motor shell 1 and the convex ring column 12 respectively communicate the inner cavity of the coreless winding 3 with the external space of the motor; when the air-cooled generator is used, the fan blades 21 rotate at a high speed along with the rotating shaft 2, so that external air flow enters the inner cavity of the hollow cup winding 3 from the vent holes at the position of the convex ring column 12 and then is discharged from the vent holes at the position of the motor shell 1 to form a complete air flow channel, and heat generated by the work of the motor can be dissipated in time; and the process that the air current flowed in and out from axis of rotation 2 both ends all contacts through the surface of logical seam with axis of rotation 2 for the heat that axis of rotation 2 department produced can be better dispelled.

The periphery cover that axis of rotation 2 and bulge loop post 12 rotate and are connected one end is equipped with first bush 23, be provided with the bearing between the periphery of first bush 23 and the bulge loop post 12, the recess has been seted up along the axial to the inside wall of first bush 23, and the 11 side of rear end cover has seted up inlet port 111 on being located the extending direction of recess one end, the recess other end in the first bush 23 and the inner chamber intercommunication of coreless winding 3, the air current flows in from inlet port 111, and the recess entering coreless winding 3's inner chamber in the first bush 23, the air current can take away the heat on the 2 surfaces of axis of rotation of first bush 23 department when flowing through the recess.

The peripheral cover of one end that axis of rotation 2 and motor housing 1 rotate to be connected is equipped with second bush 24, be provided with the bearing between the periphery of second bush 24 and the motor housing 1, and the peripheral cover that second bush 24 is located between motor housing 1 inside wall and the coreless winding 3 is equipped with commutator 4, the inside wall of second bush 24 is seted up flutedly along the axial, and the recess both ends respectively with the coreless winding 3 inner chamber, the motor exterior space intercommunication, the air current is flowed by the recess in the second bush 24 by the coreless winding 3 inner chamber, reach the effect that in time will carry thermal air escape, in-process through recess discharge at the air current, can take away the heat on second bush 24 department axis of rotation 2 surface.

The groove in the first bushing 23 is arc-shaped along the radial projection of the first bushing 23, so that the path of the surface of the rotating shaft 2 at the first bushing 23 contacting with the air flow is increased, which helps to improve the heat dissipation effect on the rotating shaft 2.

The groove in the second bushing 24 is arc-shaped along the radial projection of the second bushing 24, so that the contact path between the surface of the rotating shaft 2 at the second bushing 24 and the air flow is increased, which is helpful for improving the heat dissipation effect of the rotating shaft 2.

The outer wall of the inner cavity part of the hollow cup winding 3 of the rotating shaft 2 is provided with fins 22, the fins 22 are uniformly distributed on two sides of the fan blades 21, the fins 22 increase the heat dissipation area of the rotating shaft 2, and the heat dissipation effect of the rotating shaft 2 can be improved.

The fins 22 are of a circular thin-wall structure, and the fins 22 are sleeved on the periphery of the rotating shaft 2.

The side surfaces of the fins 22 are provided with through holes in an annular array mode by taking the circle centers of the through holes as centers, the through holes not only increase the heat dissipation area of the fins 22, but also can meet the requirement of air flow passing.

The working principle is as follows: when the air-cooling hollow cup winding is used, the fan blades 21 rotate at a high speed along with the rotating shaft 2, so that external air flows into the air inlet 111 and enters the inner cavity of the hollow cup winding 3 through the groove in the first lining 23, and the air flow can take away heat on the surface of the rotating shaft 2 at the position of the first lining 23 when flowing through the groove; the airflow enters the inner cavity of the hollow cup winding 3 and takes away the heat emitted by the fins 22; then the air current flows out by the recess in the second bush 24 by the 3 inner chambers of coreless winding, reaches the effect that in time will carry the carminative air of heat, and the in-process that the air current passes through the recess and discharges can take away the heat on second bush 24 department axis of rotation 2 surface.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a good heat dissipation's single-phase series excitation motor, includes motor housing (1), suit at rear end cap (11), bulge loop post (12) and the coreless winding (3) of motor housing (1) one end, coreless winding (3) suit is in the periphery of bulge loop post (12), the inner chamber axial lead department of coreless winding (3) is provided with axis of rotation (2), commutator (4), its characterized in that have been cup jointed to axis of rotation (2) peripheral one end: the fan blades (21) are sleeved on the periphery of the inner cavity of the coreless winding (3) of the rotating shaft (2), air holes are formed in the rotating connection positions of the motor shell (1) and the convex ring column (12) and the two ends of the rotating shaft (2) respectively along the axial direction, one side, close to the surface of the rotating shaft (2), of each air hole is provided with a through seam, and the inner cavity of the coreless winding (3) is communicated with the outer space of the motor through holes formed in the motor shell (1) and the convex ring column (12).

2. The single-phase series motor with good heat dissipation performance of claim 1, wherein: the rotating shaft (2) and the convex ring column (12) are rotatably connected with one end, a first bushing (23) is sleeved on the periphery of the rotating shaft, a bearing is arranged between the periphery of the first bushing (23) and the convex ring column (12), a groove is formed in the inner side wall of the first bushing (23) along the axial direction, an air inlet hole (111) is formed in the side face of the rear end cover (11) in the extending direction of one end of the groove, and the other end of the groove in the first bushing (23) is communicated with the inner cavity of the hollow cup winding (3).

3. The single-phase series motor with good heat dissipation performance of claim 1, wherein: the motor is characterized in that a second bushing (24) is sleeved on the periphery of one end, rotatably connected with the motor shell (1), of the rotating shaft (2), a bearing is arranged between the periphery of the second bushing (24) and the motor shell (1), the second bushing (24) is located between the inner side wall of the motor shell (1) and the periphery between the hollow cup windings (3) is sleeved with a commutator (4), a groove is formed in the inner side wall of the second bushing (24) along the axial direction, and two ends of the groove are respectively communicated with the inner cavity of the hollow cup windings (3) and the outer space of the motor.

4. The single-phase series motor having a good heat dissipation performance according to claim 2, wherein: the groove in the first bush (23) is arc-shaped along the radial projection of the first bush (23).

5. A single-phase series motor having a good heat dissipation performance according to claim 3, wherein: the groove in the second bushing (24) is arc-shaped along the radial projection of the second bushing (24).

6. The single-phase series motor with good heat dissipation performance of claim 1, wherein: fins (22) are arranged on the outer wall of the inner cavity part of the hollow cup winding (3) of the rotating shaft (2), and the fins (22) are uniformly distributed on two sides of the fan blades (21).

7. The single-phase series motor with good heat dissipation performance of claim 6, wherein: the fins (22) are of circular thin-wall structures, and the fins (22) are sleeved on the periphery of the rotating shaft (2).

8. The single-phase series motor with good heat dissipation performance of claim 7, wherein: the side surfaces of the fins (22) are provided with through holes in an annular array mode by taking the circle centers of the through holes as centers.