CN216356138U - Stator core support with cooling water channel - Google Patents

Abstract

The utility model discloses a stator core support with a cooling water channel, which comprises an inner water path structure arranged circumferentially, wherein the inner water path structure is connected with a rotating shaft through a web support, and a stator core is arranged on the periphery of the inner water path structure; one end of the rotating shaft is provided with a water inlet channel and a water outlet channel; the inner water path structure comprises an inner water jacket and an outer water jacket which are coaxially and annularly arranged, end rings are respectively arranged at two end parts of the inner water jacket and the outer water jacket, the end rings, the inner water jacket and the outer water jacket form a closed annular water path cavity, a water inlet and a water outlet are arranged on the inner water jacket, and a water supply channel for communicating the water inlet with the water outlet is arranged in the annular water path cavity; the water outlet end of the water inlet channel is connected with the water inlet through a water inlet pipe, and the water inlet end of the water outlet channel is connected with the water outlet through a water outlet pipe; according to the utility model, the cooling effect is realized by exchanging heat of the stator core and the stator winding through the inner water path structure arranged on the stator core bracket, and the problem of difficult cooling of the outer rotor electric roller is effectively solved.

Description

A stator core support with cooling water channel

technical field

The utility model relates to the technical field of outer rotor motor devices, in particular to a stator iron core bracket with cooling water channels.

Background technique

The stator of the inner rotor motor is on the outside of the motor, whether it is air-cooled or water-cooled, the technology is relatively mature. The outer rotor electric drum is just opposite to the inner rotor motor. The stator is located inside the motor, the two ends of the shaft are fixed, and the stator iron core bracket is located on the shaft. At the same time, the surface linear velocity of the outer rotor electric drum is low, and the stator iron core and winding with large loss are surrounded by the rotating part, which makes it difficult to dissipate heat. Relatively speaking, whether it is air-cooled or water-cooled, the design is more complicated, and the existing heat dissipation technology is not suitable for external rotor motors.

The Chinese utility model authorization announcement number is CN207652148U, and the authorization announcement date is 2018.07.24. A stator iron core bracket is disclosed, which includes a main bracket body and a sub bracket body that are stretched from raw materials, and the main bracket body includes a main support surface and outer circumferential surface, the auxiliary support body includes a auxiliary support surface and an outer positioning portion, the inner holes of the main support body and the auxiliary support body are installed on the outer surface of the shaft sleeve by interference fit, and the main support surface The auxiliary support surface and the auxiliary support surface are inclined from the inside to the outside in the radial direction, and the outer positioning portion of the auxiliary support body is positioned against the inner surface of the end head portion of the outer circumferential surface of the main support body. The utility model has good overall strength, greatly improves the load-bearing performance of the overall structure by optimizing the structure on the basis of using the same material, can install a larger-sized stator iron core and can bear a higher-power motor, reduces raw materials, saves money The cost is reduced, the concentricity of the coaxiality is improved, and the phenomenon of wobble is eliminated as much as possible. Although the above-mentioned patent discloses a stator core support structure, it does not disclose the technical feature of having a cooling water channel.

Utility model content

The purpose of the utility model is to perfect and improve the existing technical solutions, and to provide a stator iron core support with cooling water channels, which can effectively solve the problem of difficult cooling of the outer rotor motor. The axial water channel is provided to cool the stator core and winding.

The technical solutions adopted to achieve the above objectives are:

A stator iron core support with cooling water channel is installed on the outer circumference of a rotating shaft, and includes a circumferentially arranged inner water channel structure, the inner water channel structure and the rotating shaft are connected by a web support, and the outer circumference of the inner water channel structure is installed with stator iron core; one end of the rotating shaft is provided with a water inlet channel and a water outlet channel; the inner water channel structure includes an inner water jacket and an outer water jacket arranged in a coaxial ring, and both ends of the inner water jacket and the outer water jacket are installed with An end ring, the end ring, the inner water jacket and the outer water jacket form a closed annular waterway cavity, the annular waterway cavity is provided with a water inlet and a water outlet, and both the water inlet and the water outlet are opened in the inner water The annular waterway cavity is provided with a water supply channel connecting the water inlet and the water outlet; the water outlet end of the water inlet channel is connected with the water inlet through the water inlet pipe, and the water inlet end of the water outlet channel is connected with the water outlet through the water outlet pipe. Nozzle connection.

Further, a shaft sleeve is sleeved on the outer circumference of the rotating shaft, one end of the web is connected with the shaft sleeve, and the other end of the web is connected with the inner water jacket.

Further, the water inlet channel and the water outlet channel are both L-shaped, the vertical section of the water inlet channel is connected to the water inlet pipe, the vertical section of the water outlet channel is connected to the water outlet pipe, and the vertical section of the water inlet channel is connected to the water inlet pipe. The vertical sections of the water outlet channel are arranged opposite to each other.

Further, the web is provided with a plurality of reinforcing ribs.

Further, the water inlet and the water outlet are arranged opposite to each other along the radial direction of the inner water channel structure.

Further, the annular waterway cavity is provided with dividing strips, axial water retaining strips and circumferential water retaining strips, and the dividing strips are axially installed along the annular waterway cavity and are connected with the two end rings to realize the connection between the water inlet and the circumferential water retaining strip. The water outlet is separated so that the water inlet and the water outlet are communicated through the water supply channel; the circumferential water retaining strip cooperates with the axial water retaining strip to form a semicircular water supply channel; one end of the axial water retaining strip is connected to the end ring or the circumference The water retaining strip is connected and enclosed to form an S-shaped water supply channel, and the semicircular water supply channel is communicated with the S-shaped water supply channel; the cooling water of the water inlet flows to the water outlet through the semicircular water supply channel and the S-shaped water supply channel.

The beneficial effects that the utility model has are:

The utility model relates to a stator iron core bracket with cooling water channels, which is used for an outer rotor motor. Water enters through the end face of the rotating shaft, and the inner water channel structure arranged on the stator iron core bracket conducts heat exchange to the stator iron core and the stator winding to realize the realization of heat exchange. The cooling effect has the advantages of simple structure and good heat dissipation effect, which can effectively solve the problem of difficult cooling of the outer rotor electric drum, and is beneficial to improve the torque/power density of the motor.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic diagram showing the development of the internal waterway structure of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1-2, a stator core support with cooling water channels, installed on the outer circumference of the rotating shaft 1, includes a circumferentially arranged inner water channel structure 8, and the inner water channel structure 8 and the rotating shaft 1 pass through the web 5 Support connection, the outer circumference of the inner water channel structure 8 is installed with a stator iron core 12; one end of the rotating shaft 1 is provided with a water inlet channel 101 and a water outlet channel 102;

As shown in FIG. 1-2 , the inner water channel structure 8 includes an inner water jacket 6 and an outer water jacket 4 arranged in a coaxial ring, and end rings are installed at both ends of the inner water jacket 6 and the outer water jacket 4 3. The end ring 3, the inner water jacket 6 and the outer water jacket 4 form a closed annular waterway cavity, and the annular waterway cavity is provided with a water inlet 14 and a water outlet 15. The water inlet 14 and the water outlet 15 are all set on the inner water jacket 6, and the annular waterway cavity is provided with a water supply channel connecting the water inlet 14 and the water outlet 15; the water outlet end of the water inlet channel 101 is connected with the water inlet 14 through the water inlet pipe 2, so The water inlet end of the water outlet channel 102 is connected to the water outlet 15 through the water outlet pipe 18 .

As shown in Figures 1-2, in order to realize the connection between the inner waterway structure 8 and the rotating shaft 1, in this embodiment, a shaft sleeve 7 is sleeved on the outer circumference of the rotating shaft 1, and one end of the web 5 is connected with the shaft sleeve 7, The other end of the web 5 is connected to the inner water jacket 6 . In order to ensure the connection strength of the web 5 , a plurality of reinforcing ribs are provided on the web 5 .

As shown in FIG. 1-2, in order to facilitate the connection of the inner waterway structure 8, the water inlet channel 101 and the water outlet channel 102 are both L-shaped, the vertical section of the water inlet channel 101 is connected to the water inlet pipe 2, and the water outlet channel The vertical section of 102 is connected to the water outlet pipe 18 , and the vertical section of the water inlet channel 101 is arranged opposite to the vertical section of the water outlet channel 102 . The horizontal section of the water outlet channel 102 and the horizontal section of the water inlet channel 101 are both arranged along the axial direction of the rotating shaft 1, and the vertical section of the water outlet channel 102 and the vertical section of the water inlet channel 101 are both arranged along the rotating shaft. 1 radial setting. Both the vertical section of the water outlet channel 102 and the vertical section of the water inlet channel 101 are arranged to avoid the shaft sleeve 7 .

As shown in FIGS. 1-2 , in order to facilitate communication with the water inlet channel 101 and the water outlet channel 102 , in this embodiment, the water inlet 14 and the water outlet 15 are arranged opposite to each other along the radial direction of the inner water channel structure 8 .

As shown in FIG. 1-2, in order to allow the water entering the water inlet channel 101 of the rotating shaft 1 to cool the stator iron core 12 and the stator winding 13, in this embodiment, the annular waterway cavity is provided with partition bars 10, Axial water retaining strip 9 and circumferential water retaining strip 11, the partition strip 10 is axially installed along the annular waterway cavity and connected with the two end rings 3 to separate the water inlet 14 and the water outlet 15, so that the water inlet 14 and the water outlet 15 are separated. The water outlet 14 and the water outlet 15 are communicated through a water supply channel. The circumferential water retaining strip 11 cooperates with the axial water retaining strip 9 to form a semicircular water supply channel 16. One end of the axial water retaining strip 9 is connected to the end ring 3 or the circumferential The water blocking strip 11 is connected and enclosed to form an S-shaped water supply channel 17, and the semicircular water supply channel 16 is communicated with the S-shaped water supply channel 17; the water in the water inlet 14 flows through the semicircular water supply channel 16 and the S-shaped water supply channel 17. to outlet 15.

The working process of the utility model is:

The cooling water enters from the water inlet channel 101 at the end of the rotating shaft 1, and the cooling water enters the water inlet 14 through the water inlet pipe 2. The cooling water enters through the semicircular water supply channel 16 and the S-shaped water supply channel 17 respectively. The core 12 and the stator winding 13 conduct heat exchange to realize the cooling effect on the stator iron core 12 and the stator winding 13. The water after heat exchange enters the water outlet channel 102 through the water outlet 15 through the water outlet pipe 18 and flows out. The circulation of the stator core 12 and the stator winding 13 realizes the heat exchange, and completes the cooling effect on the stator iron core 12 and the stator winding 13 .

The utility model is a stator iron core bracket with cooling water channels, which is used for an outer rotor motor. 13. The cooling effect is realized by heat exchange, the structure is simple, and the heat dissipation effect is good, which can effectively solve the problem of difficult cooling of the outer rotor electric drum, and is beneficial to improve the torque/power density of the motor.

This embodiment does not limit the shape, material, structure, etc. of the present invention in any form, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the technology of the present invention. The scope of protection of the program.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements to some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the embodiments of the present invention. and range.

Claims (6)

1. a stator core support with a cooling water channel, is installed on the outer circumference of the rotating shaft, it is characterized in that, comprises the inner waterway structure of the circumferential arrangement, between the described inner waterway structure and the rotating shaft, through the web support connection, the described inner waterway A stator iron core is installed on the outer periphery of the structure; one end of the rotating shaft is provided with a water inlet channel and a water outlet channel; The inner water channel structure includes an inner water jacket and an outer water jacket arranged in a coaxial ring, and end rings are installed at both ends of the inner water jacket and the outer water jacket, and the end ring, the inner water jacket and the outer water jacket are installed. A closed annular waterway cavity is formed, and the annular waterway cavity is provided with a water inlet and a water outlet, both of which are set on the inner water jacket, and the annular waterway cavity is provided with a communication inlet and a water outlet. The water supply channel of the water outlet; The water outlet end of the water inlet channel is connected with the water inlet through the water inlet pipe, and the water inlet end of the water outlet channel is connected with the water outlet through the water outlet pipe. 2 . The stator core support with cooling water channel according to claim 1 , wherein the outer circumference of the rotating shaft is sleeved with a shaft sleeve, one end of the web is connected with the shaft sleeve, and the other One end is connected with the inner water jacket. 3. The stator core support with cooling water channel according to claim 2, wherein the water inlet channel and the water outlet channel are both L-shaped, and the vertical section of the water inlet channel is connected to the water inlet pipe, The vertical section of the water outlet channel is connected to the water outlet pipe, and the vertical section of the water inlet channel is arranged opposite to the vertical section of the water outlet channel. 4 . The stator core support with cooling water channel according to claim 1 , wherein the web is provided with a plurality of reinforcing ribs. 5 . 5 . The stator core support with cooling water channel according to claim 1 , wherein the water inlet and the water outlet are arranged opposite to each other along the radial direction of the inner water channel structure. 6 . 6 . The stator core support with cooling water channel according to claim 1 , wherein the annular water channel cavity is provided with a partition bar, an axial water retaining bar and a circumferential water retaining bar, and the partition The strip is axially installed along the annular waterway cavity and connected with the two end rings, so as to separate the water inlet and the water outlet, so that the water inlet and the water outlet are communicated through the water supply channel; The circumferential water retaining strip cooperates with the axial water retaining strip to form a semicircular water supply channel; One end of the axial water retaining strip is connected with the end ring or the circumferential water retaining strip to form an S-shaped water supply channel, and the semicircular water supply channel is communicated with the S-shaped water supply channel; the cooling water of the water inlet passes through the semicircular water supply channel. The water supply channel and the S-shaped water supply channel flow to the water outlet.

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