Series excited motor with heat dissipation frame

Abstract

The utility model discloses a series excited motor with a heat dissipation rack, which relates to the technical field of series excited motors and comprises a series excited motor body, a front cover and a rear cover are respectively arranged on the front side and the rear side of the series excited motor body, a motor shaft is arranged at the front end of the series excited motor body, and a junction box is arranged at the top of the series excited motor body. Heat dissipation fins are uniformly and annularly arranged on the outer side of the series motor body, and mounting plates are arranged on the two sides of the bottom of the series motor body; the fan blades are driven by the motor to work, so that after external airflow enters the mounting pipe, one part of the airflow enters the series excited motor body through the convex pipe, the fixed pipe and the through hole and then is discharged from the connecting pipe on the front cover, and the other part of the airflow is discharged through the fixed hole of the convex pipe and acts on the heat dissipation fins; therefore, the internal and external sides of the series motor body can be cooled at the same time, and the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of series excited motor, concretely to a series excited motor with heat dissipation frame. BACKGROUND

[0002] Single-phase series motor is commonly known as series excited motor, and is named because excitation winding and excitation winding are connected in series to work together, and single-phase series motor belongs to AC and DC dual-purpose motor, which can work with AC power supply or DC power supply, wherein, single-phase series motor has high speed, small size, light weight and convenient speed regulation, so it is used as power source in most electric tools.

[0003] Single-phase series motor is started frequently, has high speed and is easy to high temperature, and at present, the outer side of electric series excited motor only dissipates heat through heat dissipation fins, and the heat dissipation effect is poor, so that the service life of series excited motor is affected during long time use, and the use safety of series excited motor is also affected, therefore, the utility model provides a series excited motor with heat dissipation frame. UTILITY MODEL CONTENTS

[0004] The utility model discloses a series excited motor with heat dissipation frame, which solves the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a series excited motor with heat dissipation frame, comprising, series excited motor body, the front and back two sides of series excited motor body are provided with front cover and back cover respectively, the front end of series excited motor body is provided with motor shaft, the top of series excited motor body is provided with junction box, the outer side of series excited motor body is provided with heat dissipation fin uniformly, and the bottom of series excited motor body is provided with mounting plate on both sides.

[0006] The back cover is provided with a through hole communicated with the inside of the series excited motor body, and the front cover is provided with a connecting pipe uniformly.

[0007] The rear side of the back cover is connected with a fixed pipe communicated with the through hole through screws, the rear side of the fixed pipe is communicated with a convex pipe, the rear side of the convex pipe is communicated with a mounting pipe, the mounting pipe is provided with a motor, the output shaft of the motor is provided with a fan blade in the convex pipe, and the front side of the convex pipe is uniformly provided with a fixing hole.

[0008] As a preferred scheme of the series excited motor with heat dissipation frame, the front side of the connecting pipe is communicated with the annular box, and the two sides of the annular box are provided with exhaust pipes.

[0009] As a preferred scheme of the serial excited motor with the heat dissipation frame, the outer side of the front end of the serial excited motor body is provided with the heat dissipation frame.

[0010] As a preferred scheme of the serial excited motor with the heat dissipation frame, the outer side of the front end of the serial excited motor body is provided with the heat dissipation frame.

[0011] As a preferred scheme of the serial excited motor with the heat dissipation frame, the heat dissipation frame comprises the heat dissipation ring arranged on the outer side of the front end of the serial excited motor body, the heat dissipation ring is located at the front side of the heat dissipation fin, and the front side of the heat dissipation ring is uniformly provided with the heat dissipation fins.

[0012] As a preferred scheme of the serial excited motor with the heat dissipation frame, the bottom of the convex pipe is provided with the reinforcing plates on both sides.

[0013] Compared with the prior art, the serial excited motor with the heat dissipation frame has the beneficial effects that:

[0014] 1. The motor drives the fan blade to work, so that after the external airflow enters the installation pipe, a part enters the serial excited motor body through the convex pipe, the fixed pipe and the through hole, and then is discharged from the connecting pipe on the front cover, and the other part is discharged through the fixed hole of the convex pipe and acts on the heat dissipation fin, thereby the inside and outside of the serial excited motor body can be cooled at the same time, and the cooling effect is improved.

[0015] 2. The annular box and the exhaust pipe are arranged, so that the internal airflow can be discharged to the left and right sides, the heat dissipation frame can make the external airflow be discharged to the outside, so that the airflow blown forward by the fan blade cannot act on the driven member on the motor shaft, thereby unnecessary influence on the driven member is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of the serial excited motor with the heat dissipation frame.

[0017] Fig. 2 It is a structure schematic view of the serial excited motor with the heat dissipation frame at a place.

[0018] Fig. 3 It is a local structure sectional view schematic view of the serial excited motor with the heat dissipation frame.

[0019] In the figure: 1, series excited motor body; 2, rear cover; 3, front cover; 4, motor shaft; 5, terminal box; 6, mounting plate; 7, heat dissipation fin; 8, through hole; 9, connecting pipe; 10, fixed pipe; 11, convex pipe; 12, mounting pipe; 13, motor; 14, fan blade; 15, fixing hole; 16, ring box; 17, exhaust pipe; 18, heat dissipation ring; 19, heat dissipation fin; 20, filter screen one; 21, filter screen two; 22, filter screen three; 23, reinforcing plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] As mentioned in the background, in order to solve the problem of poor heat dissipation effect in the prior art, the utility model provides a series excited motor with a heat dissipation frame.

[0022] Embodiment 1

[0023] Reference Figs. 1 to 3 A series excited motor with a heat dissipation frame, comprising a series excited motor body 1, the front and rear sides of the series excited motor body 1 are respectively provided with a front cover 3 and a rear cover 2, the front end of the series excited motor body 1 is provided with a motor shaft 4, the motor shaft 4 is used for installing a driven part, the top of the series excited motor body 1 is provided with a terminal box 5, the outer side of the series excited motor body 1 is uniformly annularly provided with a heat dissipation fin 7, and the bottom of the series excited motor body 1 is provided with a mounting plate 6 on both sides;

[0024] The rear cover 2 is provided with a through hole 8 in communication with the inside of the series excited motor body 1, and the front cover 3 is uniformly annularly provided with a connecting pipe 9;

[0025] The rear side of the rear cover 2 is connected with a fixed pipe 10 in communication with the through hole 8 through a screw, the rear side of the fixed pipe 10 is in communication with a convex pipe 11, the rear side of the convex pipe 11 is in communication with a mounting pipe 12, the mounting pipe 12 is provided with a motor 13, the output shaft of the motor 13 is provided with a fan blade 14 located in the convex pipe 11, and the front side of the convex pipe 11 is uniformly annularly provided with a fixing hole 15, the motor 13 is powered and controlled by the prior art, and when the fan blade 14 rotates, part of the external airflow enters the mounting pipe 12, then enters the series excited motor body 1 through the convex pipe 11, the fixed pipe 10 and the through hole 8, and then is discharged from the connecting pipe 9 on the front cover 3, and the other part is discharged through the fixing hole 15 of the convex pipe 11 and acts on the heat dissipation fin 7, so that the inside and outside of the series excited motor body 1 can be cooled at the same time, and the heat dissipation effect is improved.

[0026] The hot air flow discharged from the connecting pipe 9 directly blows on the driven part on the motor shaft 4, which may cause influence, therefore the front side of the connecting pipe 9 is communicated with the annular box 16, the annular box 16 is provided with the exhaust pipe 17 on both sides, so that the blowing direction of the hot air flow is changed, and direct blowing on the driven part is avoided.

[0027] In order to prevent dust, the filter screen 1 20 is arranged on the exhaust pipe 17, the front side of the convex pipe 1 1 is provided with the filter screen 2 21 communicated with the fixing hole 1 5, and the rear side of the mounting pipe 1 2 is provided with the filter screen 3 22.

[0028] The air flow blown from the fixing hole 1 5 blows on the left and right of the heat dissipation fin 7, and the heat on the heat dissipation fin 7 is taken away, and in order to avoid the hot air flow directly blowing on the driven part on the motor shaft 4, the heat dissipation frame is arranged on the outer side of the front end of the series motor body 1.

[0029] The heat dissipation frame comprises the heat dissipation ring 1 8 arranged on the outer side of the front end of the series motor body 1, the heat dissipation ring 1 8 is located on the front side of the heat dissipation fin 7, the hot air flow passing through the heat dissipation fin 7 is blocked by the heat dissipation ring 1 8, direct blowing on the driven part is avoided, and the front side of the heat dissipation ring 1 8 is uniformly and circularly provided with the heat dissipation fin 1 9, so that the heat dissipation efficiency of the heat dissipation ring 1 8 itself is improved.

[0030] Embodiment 2

[0031] Reference Fig. 1 And Fig. 3 The bottom sides of the convex pipe 1 1 are provided with the reinforcing plate 2 3 with screw holes, which is used for fixing the convex pipe 1 1 and improving the stability.

[0032] The remaining structures are the same as those in embodiment 1.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A series motor with a heat sink, characterized by: include, A series motor body (1), wherein a front cover (3) and a rear cover (2) are respectively provided on the front and rear sides of the series motor body (1), a motor shaft (4) is provided at the front end of the series motor body (1), a junction box (5) is provided at the top of the series motor body (1), heat dissipation fins (7) are uniformly provided in an annular manner on the outer side of the series motor body (1), and mounting plates (6) are provided on both sides of the bottom of the series motor body (1); The rear cover (2) is provided with a through hole (8) communicating with the interior of the series motor body (1), and the front cover (3) is provided with connecting pipes (9) evenly arranged in an annular direction; The rear side of the rear cover (2) is connected to a fixing tube (10) connected to the through hole (8) by screws, the rear side of the fixing tube (10) is connected to a convex tube (11), the rear side of the convex tube (11) is connected to a mounting tube (12), a motor (13) is arranged in the mounting tube (12), the output shaft of the motor (13) is provided with a fan blade (14) located in the convex tube (11), and the front side of the convex tube (11) is uniformly annularly provided with fixing holes (15).

2. The series motor with a heat sink according to claim 1, characterized in that: The front sides of the connecting pipes (9) are in communication with the annular box (16), and exhaust pipes (17) are provided on both sides of the annular box (16).

3. The series motor with a heat sink according to claim 2, characterized in that: The exhaust pipe (17) is provided with a filter screen 1 (20), the front side of the convex pipe (11) is provided with a filter screen 2 (21) communicating with the fixing hole (15), and the rear side of the mounting pipe (12) is provided with a filter screen 3 (22).

4. The series motor with a heat sink according to claim 1, characterized in that: A heat dissipation frame is provided at the outer front end of the series motor body (1).

5. The series motor with a heat sink according to claim 4, characterized in that: The heat dissipation frame comprises a heat dissipation ring (18) arranged on the front end of the outer side of the series motor body (1); the heat dissipation ring (18) is located in front of the heat dissipation fins (7); and heat dissipation fins (19) are evenly arranged in an annular manner on the front side of the heat dissipation ring (18).

6. The series motor with a heat sink according to claim 1, characterized in that: Reinforcement plates (23) are provided on both sides of the bottom of the convex tube (11).

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