CN213043555U

CN213043555U - Inner cooling fan and motor

Info

Publication number: CN213043555U
Application number: CN202022169674.8U
Authority: CN
Inventors: 程传梅; 宋萍萍; 余子实
Original assignee: Qingdao CCS Electric Corp
Current assignee: Qingdao CCS Electric Corp
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-04-23
Anticipated expiration: 2030-09-28

Abstract

The utility model provides an interior radiator fan and motor, interior radiator fan static balance nature is good to the vibration of reducible motor reduces the running noise of motor. The inner heat dissipation fan comprises an outer ring, an inner ring, an installation bottom cylinder and an air guide sleeve; a conical air outlet space is enclosed between the outer ring and the inner ring, a plurality of partition plates are uniformly distributed in the air outlet space along the circumferential direction, the air outlet space is divided into a plurality of heat dissipation air channels along the circumferential direction by the plurality of partition plates, and the installation bottom barrel is positioned on the axial outer side of the small inner diameter end of the inner ring and is connected with the inner ring into a whole; the air guide sleeve is positioned on the axial outer side of the small inner diameter end of the outer ring and is connected with the outer ring into a whole, and the air guide sleeve is positioned on the radial outer side of the installation bottom barrel. The utility model discloses interior radiator fan can pinpoint the baffle, and it is uneven to prevent that the whole interior radiator fan that angular deviation leads to from, and radiator fan's static balance nature in improving to the vibration of reducible motor reduces the running noise of motor.

Description

Inner cooling fan and motor

Technical Field

The utility model belongs to the technical field of the motor, concretely relates to radiator fan's in motor institutional advancement.

Background

Along with the development of society, various apparatuses emerge endlessly, and the power sources of these apparatuses are mostly driven by the motor, and the motor has gradually become indispensable power source, and the demand for large-scale motor is increasing.

The fan of motor is the key spare part of motor, and the fan is all installed to most motors to improve the heat dissipation of motor, according to the difference of mounted position, motor radiator fan divide into interior radiator fan and outer radiator fan. The inner heat radiation fan is arranged in the inner cavity of the motor and used as a power source of the inner air channel, and air pressure is formed along with the rotation of the rotor, so that the air in the motor flows to bring the heat of the stator and the rotor to the shell or the outside, and the heat radiation of the motor is improved.

The inner heat radiation fan is used as a rotating body to carry out static balance, so that the self balance is realized to the maximum extent, the vibration of the motor is reduced, and a certain effect on noise suppression is achieved. Therefore, how to provide an inner heat dissipation fan with good static balance is an urgent technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an interior radiator fan and motor, interior radiator fan static balance nature is good to the vibration of reducible motor reduces the running noise of motor.

In order to achieve the technical effect, the technical scheme adopted by the inner cooling fan provided by the utility model is that the inner cooling fan comprises an outer ring, an inner ring, an installation bottom cylinder and an air guide sleeve which are coaxially arranged; the outer ring and the inner ring are both in a conical barrel shape and have the same orientation, the inner ring is positioned on the radial inner side of the outer ring, a conical air outlet space is defined between the outer ring and the inner ring, a plurality of partition plates are uniformly distributed in the air outlet space along the circumferential direction, the air outlet space is divided into a plurality of heat dissipation air channels along the circumferential direction by the plurality of partition plates, each partition plate comprises a main body part extending along the bus direction of the air outlet space, the main body part is connected with the outer ring into a whole by the radial outer side edge of the main body part, the radial inner side edge of the main body part is connected with the inner ring into a whole, the radial outer side edge of the main body part and the outer ring are provided with first positioning structures matched with each other, and the radial inner side edge of the; the mounting bottom cylinder is positioned at the small inner diameter end of the inner ring and is connected with the inner ring into a whole; the air guide sleeve is located the little internal diameter end department of outer lane and with the outer lane is connected as an organic wholely, the air guide sleeve is located the radial outside of installation end section of thick bamboo.

The main body part is welded and connected with the outer ring through the radial outer side edge of the main body part, and is welded and connected with the inner ring through the radial inner side edge of the main body part, the radial outer side edge of the main body part is attached to the inner wall of the outer ring, and the radial inner side edge of the main body part is attached to the outer wall of the inner ring.

The first positioning structure comprises a first inserting projection formed on the radial outer side edge of the main body part and a first inserting opening formed on the outer ring; the second positioning structure comprises a second inserting protrusion formed on the radial inner side edge of the main body part and a second inserting opening formed on the inner ring.

The baffle still include with the extension as an organic whole is connected to the main part, the extension is located air guide sleeve with between the installation end section of thick bamboo, the extension with installation end section of thick bamboo welded connection, just the radial inboard edge of extension with be equipped with the third location structure of mutually supporting on the installation end section of thick bamboo.

The third positioning structure comprises an inserting groove formed on the radial inner side edge of the extending part and a third inserting protrusion formed on the mounting bottom barrel, and the groove wall on one side of the inserting groove abuts against the axial outer end face of the mounting bottom barrel.

The installation bottom barrel comprises a tapered barrel part and a straight barrel part, the extension direction of a bus is consistent with that of the bus of the inner ring, the straight barrel part is positioned on the axial outer side of the tapered barrel part, the tapered barrel part and the straight barrel part are coaxially connected into a whole, and the third inserting protrusion is positioned on the circumferential outer wall of the straight barrel part.

The taper cylinder part is evenly distributed with a plurality of process screw holes along the circumferential direction, and the process screw holes penetrate through the taper cylinder part along the axial direction.

And the radial outer side edge of the extension part is connected with the air guide sleeve in a welding mode.

And balance screw holes for mounting balance blocks are uniformly distributed on the outer ring.

The utility model also provides a motor, include the casing and be located stator and the rotor of casing, radiator fan in installing in the pivot of rotor, interior radiator fan is foretell interior radiator fan, the big internal diameter end of outer lane with the big internal diameter end of inner circle all deviates from the stator reaches rotor place side.

Compared with the prior art, the utility model has the advantages of it is following and positive effect:

the utility model discloses interior radiator fan encloses into the air-out space by the outer lane and the inner circle of toper tube-shape, and along circumference equipartition baffle as fan blade in the air-out space, a plurality of baffles divide into a plurality of heat dissipation wind channels with the air-out space, the one end in heat dissipation wind channel is its air inlet end, the other end is its air-out end, install interior radiator fan on the rotor pivot of motor through its installation end, along with the rotor rotation forms the wind pressure, the heat of rotor internal channel gets into in the heat dissipation wind channel by the air inlet end in heat dissipation wind channel under the wind-guiding effect of wind-guiding sleeve, then discharge by the air-out end, make the inside air flow of motor, bring the rotor heat to the casing or external world, improve the heat dissipation; the main body part of the partition plate is positioned when being welded with the outer ring and the inner ring through the first positioning structure and the second positioning structure, the partition plate can be accurately positioned, the whole inner cooling fan caused by angle deviation is prevented from being unbalanced, the static balance of the inner cooling fan is improved, accordingly, the vibration of the motor can be reduced, and the running noise of the motor is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of the motor of the present invention;

fig. 2 is a perspective structure view of the inner cooling fan of the present invention;

fig. 3 is a perspective view of the inner fan according to the present invention;

FIG. 4 is a front view of FIG. 2;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

fig. 6 is a structure diagram of the partition board of the inner heat dissipation fan of the present invention.

Reference numerals: 100. a housing; 200. a stator; 300. a rotor; 310. a rotating shaft; 400. an inner heat dissipation fan; 410. an outer ring; 411. a large inner diameter end; 412. a small inner diameter end; 413. a first interface; 414. a balance screw hole; 420. an inner ring; 421. a large inner diameter end; 422. a small inner diameter end; 423. a second interface; 430. mounting a bottom cylinder; 431. a third insertion projection; 432. a tapered barrel portion; 433. a straight tube portion; 434. a flat key groove; 435. a craft screw hole; 440. an air guide sleeve; 450. an air outlet space; 460. a partition plate; 461. a main body portion; 461A, radially outer side; 461B, radially inner side; 461C and a first inserting projection; 461D and a second inserting projection; 462. an extension portion; 462A, the radially outer side; 462B, a radially inner side; 462C, a plug-in groove; 470. a heat dissipation air duct; 471. an air inlet end; 472. an air outlet end.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the motor of the present embodiment includes a casing 100, and a stator 200 and a rotor 300 located in the casing 100, wherein an inner heat dissipation fan 400 is mounted on a rotating shaft of the rotor 300.

Specifically, referring to fig. 2 to 6, the inner radiator fan 400 includes an outer ring 410, an inner ring 420, a mounting base tube 430, and an air guide sleeve 440, which are coaxially disposed; the outer ring 410 and the inner ring 420 are both in a tapered cylindrical shape and have the same orientation, that is, the large inner diameter end 411 of the outer ring 410 and the large inner diameter end 421 of the inner ring 420 face the same direction, and the small inner diameter end 412 of the outer ring 410 and the small inner diameter end 422 of the inner ring 420 face the same direction; the inner ring 420 is located at the radial inner side of the outer ring 410, that is, the inner ring 420 is located in the tapered space of the outer ring 410, a tapered air outlet space 450 is enclosed between the outer ring 410 and the inner ring 420, a plurality of partition plates 460 are uniformly distributed in the air outlet space 450 along the circumferential direction, and the air outlet space is divided into a plurality of heat dissipation air ducts 470 by the plurality of partition plates 460 along the circumferential direction; the partition 460 includes a main body portion 461 extending along a bus direction of the air outlet space 450, the main body portion 461 is integrally connected to the outer B ring 410 by a radially outer side 461A thereof, and is integrally connected to the inner ring 420 by a radially inner side 461B thereof, and the radially outer side 461A of the main body portion 461 and the outer ring 410 are provided with first positioning structures which are mutually matched to position the main body portion 461 and the outer ring 410; a second positioning structure which is matched with the inner ring 420 is arranged on the radial inner side 461B of the main body part 461, so as to position the connection between the main body part 461 and the inner ring 420; the mounting bottom cylinder 430 is positioned at the small inner diameter end 422 of the inner ring 420 and is connected with the inner ring 420 into a whole, and is specifically positioned at the axial outer side of the small inner diameter end 422 of the inner ring 420; the air guide sleeve 440 is located at the small inner diameter end 412 of the outer ring 410, is connected with the outer ring 410 into a whole, and is specifically located axially outside the small inner diameter end 412 of the outer ring 410; the air guide sleeve 440 is positioned radially outside the mounting bottom cylinder 430; in this embodiment, the large inner diameter end 411 of the outer ring 410 and the large inner diameter end 421 of the inner ring 420 of the inner heat dissipation fan 400 are both away from the sides of the stator 200 and the rotor 300.

In this embodiment, "radially inside" and "radially outside" mean "inward" in a direction close to the central axis of each member in the radial direction and "outward" in a direction away from the central axis of each member, and "axially inside" and "axially outside" in this embodiment mean "inward" in a direction close to the central position of each member in the axial direction and "outward" in a direction away from the central position of each member.

In this embodiment, the inner heat dissipation fan 400 of the motor is formed by enclosing an air outlet space 450 by an outer ring 410 and an inner ring 420 in a tapered cylindrical shape, and a partition 460 is uniformly distributed in the air outlet space 450 along the circumferential direction as a fan blade, the partition 460 divides the air outlet space 450 into a plurality of heat dissipation air channels 470, one end of each heat dissipation air channel 470 is an air inlet end 471, and the other end of each heat dissipation air channel 470 is an air outlet end 472, the inner heat dissipation fan 400 is installed on the rotating shaft 310 of the rotor 300 through the installation bottom cylinder 430, air pressure is formed along with the rotation of the rotor 300, heat of an internal channel of the rotor 300 enters the heat dissipation air channels 470 from the air inlet ends 471 of the heat dissipation air channels 470 under the air guiding effect of the air guiding sleeve 440 and is then discharged from the air outlet ends 472, and the flow direction of the heat is as shown by an arrow in fig. 1; when the main body portion 461 of the partition plate 460 is welded with the outer ring 410 and the inner ring 420, the partition plate 460 can be positioned through the first positioning structure and the second positioning structure, so that the partition plate 460 can be accurately positioned, the whole inner cooling fan 400 caused by the angular deviation is prevented from being unbalanced, the static balance of the inner cooling fan 400 is improved, the vibration of the motor can be reduced, and the running noise of the motor is reduced.

As a specific implementation manner, in the present embodiment, the main body 461 of the partition 460 is connected to the outer ring 410 by welding the radially outer side 461A of the partition, and meanwhile, the main body 461 is connected to the inner ring 420 by welding the radially inner side 461B of the partition, the radially outer side 461A of the main body 461 is attached to the inner wall of the outer ring 410, and the radially inner side 461B of the main body 461 is attached to the outer wall of the inner ring 420, that is, the contour shape of the main body 461 is adapted to the radial cross section of the heat dissipation duct 470, so as to further improve the stability of the partition 460 and further improve the static balance of the heat dissipation fan 400.

Specifically, as shown in fig. 2 to 6, the first positioning structure includes a first insertion projection 461C formed on a radially outer side 461A of the main body portion 461 and a first insertion port 413 formed on the outer race 410; the second positioning structure includes a second socket protrusion 461D formed on the radially inner side 461B of the main body portion 461 and a second socket 423 formed on the inner race 420. The number of the first inserting protrusions 461C and the number of the second inserting protrusions 461D on the main body 461 of the partition 460 are determined according to the specific length of the main body 461, and in order to improve the positioning reliability, the number of the first inserting protrusions 461C is usually plural and is arranged at intervals along the length direction of the radial outer side 461A, the number of the second inserting protrusions 461D is usually plural and is arranged at intervals along the length direction of the radial inner side 461B, accordingly, the number of the first inserting protrusions 461C is not less than the number of the first inserting protrusions 413, and the number of the second inserting protrusions 423 is not less than the number of the second inserting protrusions 461D.

In order to further improve the stability of the partition 460, the partition further includes an extension 462 integrally connected to the main body 461, the extension 462 is located between the wind guiding sleeve 440 and the mounting bottom tube 430, the extension 462 is welded to the mounting bottom tube 430, and a third positioning structure is disposed on a radially inner side 462B of the extension 462 and the mounting bottom tube 430, which are engaged with each other. The partition 460 is welded to the inner ring 420 and the outer ring 410 by the main body 461, and is welded to the mounting base tube 430 by the extension 462, and is positioned by the third positioning structure before the welding, so that the positioning degree and the welding firmness of the partition 460 are further improved, the problem of the deviation of the mounting angle of the partition 460 is further solved, and the static balance of the whole inner cooling fan 400 is further improved.

Further, as shown in fig. 3, 5 and 6, the third positioning structure includes a plugging recess 462C formed on a radially inner side 462B of the extension 462 and a third plugging protrusion 431 formed on the mounting base cylinder 430, and a groove wall on one side of the plugging recess 462C abuts against an axially outer end face of the mounting base cylinder 430, as shown in fig. 5, to further limit the extension 462, thereby improving the positioning reliability of the partition 460.

As shown in fig. 5, the left side portion of the broken line B is the tapered cylindrical portion 432, the right side portion is the straight cylindrical portion 433, the tapered cylindrical portion 432 and the straight cylindrical portion 433 are coaxially connected together, the third insertion protrusion 431 is located on the circumferential outer wall of the straight cylindrical portion 433, and the mounting bottom cylinder 430 is welded to the inner ring 420 through the tapered cylindrical portion 432. By providing the mounting base cylinder 430 in two parts having different contour shapes, the tapered cylinder part 432 can be smoothly engaged with the inner ring 420, and the straight cylinder part 433 facilitates molding of the third insertion projection 431 to be tack-welded with the extension part 462 of the diaphragm 460, thereby facilitating mounting of the entire mounting base cylinder 430.

Since the inner heat dissipation fan 400 is installed on the rotation shaft 310 of the rotor 300 to rotate with the rotation shaft 310, and serves as a rotating member which is shrink-fitted to the rotation shaft 310 and fixed by a flat key, a flat key groove 434 is formed on an inner wall of the tapered cylinder portion 432 of the installation sleeve 430. In this embodiment, the inner ring 420, the outer ring 410, the guide sleeve 440, and the partition 460 of the inner heat dissipation fan 400 are made of sheet metal, and have a thin wall thickness to avoid a large pressure or tension, so that a plurality of process screw holes 435 are uniformly distributed on the tapered cylinder portion 432 in the circumferential direction, and the process screw holes 435 axially penetrate through the tapered cylinder portion 432. When the inner heat dissipation fan 400 is installed, the bolt is screwed on the process screw 435, and the inner heat dissipation fan 400 is adjusted by pushing and pulling the bolt, so that the inner heat dissipation fan 400 can reach a designated position; during disassembly, the bolts are screwed on the technical screw holes 435, and the inner heat dissipation fan 400 is separated from the rotating shaft 310 by pulling the bolts, so that the problem that the inner heat dissipation fan 400 is stressed and deformed by directly applying force on the inner heat dissipation fan 400 is solved.

To further improve the stability of the partition 460, the radially outer edge 462A of the extension 462 thereof is welded to the air guide sleeve 440.

In addition, since the inner heat dissipating fan 400 is a welded component in this embodiment, in addition to static balance, there may be a problem of poor dynamic balance caused by uneven welding, and in order to solve this problem, in this embodiment, a plurality of balance screw holes 414 are uniformly distributed on the outer ring 410 for installing balance blocks, and as shown in fig. 2 to 5, the balance screw holes 414 are uniformly distributed on the outer ring 410 along the circumferential direction, so that the balance blocks may be installed by selecting appropriate balance screw holes 414 according to specific dynamic balance conditions.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An interior radiator fan, its characterized in that: the air guide sleeve comprises an outer ring, an inner ring, an installation bottom barrel and an air guide sleeve which are coaxially arranged; the outer ring and the inner ring are both in a conical barrel shape and have the same orientation, the inner ring is positioned on the radial inner side of the outer ring, a conical air outlet space is defined between the outer ring and the inner ring, a plurality of partition plates are uniformly distributed in the air outlet space along the circumferential direction, the air outlet space is divided into a plurality of heat dissipation air channels along the circumferential direction by the plurality of partition plates, each partition plate comprises a main body part extending along the bus direction of the air outlet space, the main body part is connected with the outer ring into a whole by the radial outer side edge of the main body part, the radial inner side edge of the main body part is connected with the inner ring into a whole, the radial outer side edge of the main body part and the outer ring are provided with first positioning structures matched with each other, and the radial inner side edge of the; the mounting bottom cylinder is positioned at the small inner diameter end of the inner ring and is connected with the inner ring into a whole; the air guide sleeve is located the little internal diameter end department of outer lane and with the outer lane is connected as an organic wholely, the air guide sleeve is located the radial outside of installation end section of thick bamboo.

2. The inner heat dissipating fan as claimed in claim 1, wherein: the main body part is welded and connected with the outer ring through the radial outer side edge of the main body part, and is welded and connected with the inner ring through the radial inner side edge of the main body part, the radial outer side edge of the main body part is attached to the inner wall of the outer ring, and the radial inner side edge of the main body part is attached to the outer wall of the inner ring.

3. The inner heat dissipating fan as claimed in claim 1, wherein: the first positioning structure comprises a first inserting projection formed on the radial outer side edge of the main body part and a first inserting opening formed on the outer ring; the second positioning structure comprises a second inserting protrusion formed on the radial inner side edge of the main body part and a second inserting opening formed on the inner ring.

4. The inner heat dissipating fan as claimed in claim 1, wherein: the baffle still include with the extension as an organic whole is connected to the main part, the extension is located air guide sleeve with between the installation end section of thick bamboo, the extension with installation end section of thick bamboo welded connection, just the radial inboard edge of extension with be equipped with the third location structure of mutually supporting on the installation end section of thick bamboo.

5. The inner heat dissipating fan as claimed in claim 4, wherein: the third positioning structure comprises an inserting groove formed on the radial inner side edge of the extending part and a third inserting protrusion formed on the mounting bottom barrel, and the groove wall on one side of the inserting groove abuts against the axial outer end face of the mounting bottom barrel.

6. The inner heat dissipating fan as claimed in claim 5, wherein: the installation bottom barrel comprises a tapered barrel part and a straight barrel part, the extension direction of a bus is consistent with that of the bus of the inner ring, the straight barrel part is positioned on the axial outer side of the tapered barrel part, the tapered barrel part and the straight barrel part are coaxially connected into a whole, and the third inserting protrusion is positioned on the circumferential outer wall of the straight barrel part.

7. The inner heat dissipating fan as claimed in claim 6, wherein: the taper cylinder part is evenly distributed with a plurality of process screw holes along the circumferential direction, and the process screw holes penetrate through the taper cylinder part along the axial direction.

8. The inner heat dissipating fan as claimed in claim 4, wherein: and the radial outer side edge of the extension part is connected with the air guide sleeve in a welding mode.

9. The inner heat dissipating fan as claimed in claim 1, wherein: and balance screw holes for mounting balance blocks are uniformly distributed on the outer ring.

10. The utility model provides a motor, includes casing and stator and the rotor that is located the casing, radiator fan, its characterized in that in installing in the pivot of rotor: the inner heat dissipation fan according to any one of claims 1 to 9, wherein the large inner diameter end of the outer ring and the large inner diameter end of the inner ring both face away from the side where the stator and the rotor are located.