CN212012322U

CN212012322U - Casing and air-cooled motor

Info

Publication number: CN212012322U
Application number: CN202020712780.3U
Authority: CN
Inventors: 王贝贝; 林鼎润; 邹德明; 贺辉雄
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-24
Anticipated expiration: 2030-04-30

Abstract

The embodiment of the utility model provides a casing and air-cooled motor, the casing includes the casing main part that is formed by the integrative stretching of metal material, the casing main part includes shell layer and wind channel layer, and the inner wall of shell layer encloses to close and forms the stator chamber; the air duct layer surrounds the shell layer, and an axial air flow channel is formed between the shell layer and the air duct layer; one axial end of the machine shell main body is provided with an assembling section formed by turning the air duct layer. The embodiment of the utility model provides a through the shell layer, the wind channel layer that form by the integrative drawing of metal material to and the assembly section that turning wind channel layer and splice bar formed, when guaranteeing structural strength and radiating efficiency, simplified motor structure, improved the uniformity of motor, can reduce the processing degree of difficulty greatly, reduce material cost and processing cost.

Description

Casing and air-cooled motor

Technical Field

The embodiment of the utility model provides a relate to the motor field, more specifically say, relate to a casing and air-cooled motor.

Background

With the global industrial production becoming intelligent and digital, the motor is increasingly developed as the key technology of industrial modernization. At present, the problems of structural cost, noise, temperature rise and the like of the motor are always important factors for restricting the development of the motor due to the restriction of various technical conditions.

In order to improve the heat dissipation efficiency of the motor, the traditional closed air duct casing is generally formed by assembling a casing main body and an air duct plate, wherein the casing main body is formed by processing a tensile section bar. Specifically, the closed air duct casing comprises a casing main body and four or more air duct plates outside, and the heat dissipation area can be increased through the air duct plates, so that heat generated by the motor during working is dissipated in a heat radiation mode. In the closed air duct casing, the air duct plate is inserted into the surface of the stator casing main body through the clamping groove and is fastened through the screw, so that a closed ventilation structure is formed. The outer surface of the main body of the machine shell and the inner surface of the air duct plate can be provided with heat dissipation ribs to enhance the heat dissipation effect.

However, the thickness and strength of the air duct plate are limited, the heat dissipation efficiency is low, the requirement of a high-power motor cannot be met, and the vibration noise of the shell cannot be effectively reduced. In addition, the precision of the air duct plate formed by stretching the sectional material is poor, the matching tolerance with the main body of the machine shell is difficult to guarantee, the single assembly is needed, the working hours are consumed, the consistency of the whole machine is difficult to guarantee, the ventilation space between the main body of the machine shell and the air duct plate cannot be completely sealed, and the heat dissipation effect is affected.

In addition, some integral type casings, its motor casing is formed by section bar drawing and machine tooling, and casing four corners breach department need carry out complicated milling process operation after the section bar drawing to form the bolt installation and keep away the position, its processing cost is higher.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a to the above-mentioned air-cooled motor structure that adopts the structure of assembling complicated, the assembly wastes time and energy, the radiating effect is not good to and the integral type casing need carry out the problem of complicated and the higher processing operation that mills of cost in four corners breach department, provide a new casing and air-cooled motor.

The embodiment of the present invention provides a casing, including a casing main body formed by integrally stretching a metal material, wherein the casing main body includes a casing layer and an air duct layer, and an inner wall of the casing layer encloses a stator cavity; the air duct layer surrounds the shell layer, and an axial air flow channel is formed between the shell layer and the air duct layer; one axial end of the machine shell main body is provided with an assembling section formed by turning the air duct layer.

Preferably, the outer wall of the shell layer and the inner wall of the air duct layer are respectively provided with radially protruding heat dissipation ribs, and the heat dissipation ribs are axially arranged.

Preferably, the casing main body further comprises a connecting rib, and the air duct layer is supported and fixed on the outer layer of the casing layer through the connecting rib.

Preferably, the shell layer is circular, and the outer wall of the shell layer comprises a plurality of bosses; the assembling section is formed by turning the air duct layer and the connecting ribs to the top of the boss.

Preferably, an axial through hole is formed in the boss, and a mounting hole is formed by tapping an end of the axial through hole.

Preferably, the air duct layer comprises four first air duct plates and four second air duct plates, and the width of the first air duct plates is greater than that of the second air duct plates; the cross sections of the four first air duct plates are positioned on a square with the center of the shell main body as the center, and each second air duct plate is positioned between two adjacent first air duct plates and is respectively connected with the two adjacent first air duct plates.

Preferably, at least one first air duct plate of the air duct layer is provided with two axially arranged footing slider grooves, and the two footing slider grooves are respectively located at two sides of an air flow channel between the first air duct plate and the casing layer.

Preferably, one of the first air duct plates of the air duct layer is provided with a wiring hole, and the other three first air duct plates of the air duct layer are respectively provided with two footing slider grooves.

Preferably, the axial length of the fitting segment is 5-10 cm.

The embodiment of the utility model also provides an air cooling motor, including stator, rotor, fan, front end housing, rear end cap and back shroud, the fan is installed in the fan cavity between the rear end cap and the back shroud, the air cooling motor still includes the above-mentioned casing; wherein: the front end cover is assembled on the front end face of the shell, the rear end cover is assembled on the rear end face of the shell, an outlet of the fan cavity is communicated with one opening of the airflow channel, and the other opening of the airflow channel is located at one end, connected with the front end cover, of the shell.

Implement the utility model discloses a casing and air-cooled motor have following beneficial effect: through the shell layer, the air duct layer that form by the integrative drawing of metal material to and the assembly section that the turning air duct layer formed, when guaranteeing structural strength and radiating efficiency, simplified motor structure, improved the uniformity of motor, can reduce the processing degree of difficulty greatly, reduce material cost and processing cost, still can be applicable to the occasion of various different end covers simultaneously. The embodiment of the utility model provides a still through improving airflow channel structure, improved the forced air cooling radiating effect of motor, reduced the motor temperature rise. Furthermore, the embodiment of the utility model provides an air current channel through integrative formation sets up the strengthening rib in it, has reduced motor noise.

Drawings

Fig. 1 is a schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a housing according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rear end of a housing according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-3, which are schematic structural views of a housing according to an embodiment of the present invention, the housing can be used for an air-cooled motor. The casing of the embodiment includes a casing main body integrally formed by stretching a metal material (for example, an aluminum alloy, etc.), the casing main body includes a casing layer 11 and an air duct layer 12 (that is, the casing layer 11 and the air duct layer 12 are integrally formed by stretching a metal material), and an inner wall of the casing layer 11 encloses and forms the stator cavity 111. The air duct layer 12 surrounds the shell layer 11 and forms a plurality of axial air flow passages 14 between the shell layer 11 and the air duct layer 12. The plurality of air flow passages 14 are distributed along the circumferential direction of the casing main body (i.e., the plurality of air flow passages 14 are arranged around the central axis of the casing main body). Each air flow passage 14 is disposed along the axial direction of the cabinet main body 1, and each air flow passage 14 penetrates the cabinet main body.

In addition, an assembly section formed by turning the air duct layer 12 is arranged at one axial end (front end) of the shell main body, namely, the air duct layer 12 of the assembly section is cut off in a turning mode, only the shell layer 11 is left, so that the air duct layer 12 of the shell main body is shorter than the shell layer 11, an air outlet of the air flow channel 14 can be formed at the position, the increase of flow resistance caused by fluid impacting a front end cover is prevented, the air outlet of the air flow channel 14 is more beneficial, and the heat dissipation is more beneficial. Preferably, the axial length of the fitting section is 5-10 cm.

Above-mentioned casing is through the casing layer 11, the wind channel layer 12 that form by the integrative drawing of metal material, with airflow channel 14 and casing main part integrated into one piece, guaranteeing structural strength and making airflow channel can not reveal, simplified the motor structure simultaneously, improved the uniformity of motor, simplified the assembly process of motor. In addition, the air duct layer 12 can be turned at one axial end of the casing to form an assembly section, and the assembly section can be formed by one cutter, so that the machining difficulty is greatly reduced, and the material cost and the machining cost are reduced. Since the shell layer 11 and the air duct layer 12 are integrally formed, low frequency vibration can be reduced, thereby reducing noise of the motor.

Specifically, in an embodiment of the present invention, the casing main body further includes a connecting rib 13, and the air duct layer 12 is supported and fixed on the outer layer of the casing layer 11 through the connecting rib 13, that is, the connecting rib 13 is connected between the outer wall of the casing layer 11 and the inner wall of the air duct layer 12. The connecting ribs 13 are formed by integrally stretching the casing layer 11 and the air duct layer 12.

The shell layer 11 is circular, the outer wall of the shell layer 11 includes a plurality of radially protruding bosses 112 (the bosses 112 and the shell body are integrally formed by stretching), and the top of each boss 112 is connected with the inner wall of the air duct layer 12 through the connecting rib 13 (part of the connecting rib 13 is directly connected with the outer wall of the shell layer 11 and the inner wall of the air duct layer 12), so that the connection strength between the shell layer 11 and the air duct layer 12 is enhanced. The fitting section at one end of the cabinet main body is formed by turning the air duct layer 12 and the connecting rib 13 to the top of the boss 112 (the connecting rib not connected to the boss is turned to the same height as the top of the boss 112).

Also, the boss 112 may be provided therein with an axial through hole 113, the axial through hole 113 being formed integrally with the housing body by drawing, and a mounting hole being formed by tapping an end portion of the axial through hole 113, so that the processing cost and the material cost can be reduced. On the other hand, above-mentioned casing main part can pass through-hole 113 and connect the motor end cover, and the end cover of adaptation different grade type, with the end cover among the prior art only can adapt evagination type end cover (end cover bulge and through-hole 113 spiro union, leave one section axial distance between the vertical terminal surface of end cover and the casing main part terminal surface, be used for forming the air outlet in wind channel), this embodiment scheme can also adapt parallel or envelope type end cover (closely link to each other between vertical terminal surface of end cover and the casing main part terminal surface, the air outlet forms through the assembly section after the turning), and compare prior art scheme, the casing of this embodiment can also reduce axial dimensions.

In another embodiment of the present invention, the outer wall of the air duct layer 12 is substantially octagonal, that is, the air duct layer 12 includes four first air duct plates 121 and four second air duct plates 122, and the width of the first air duct plates 121 is greater than the width of the second air duct plates 122 (here, the axial dimension of the motor is taken as the length). The cross section (i.e., the section perpendicular to the axial direction of the casing main body) of the four first air duct plates 121 is located on a square centered on the center of the casing main body, and each second air duct plate 122 is located between two adjacent first air duct plates 121 and connected to the two adjacent first air duct plates 121. The first air duct plate 121 and the second air duct plate 122 have bosses 112 on both sides thereof, respectively, to enhance the structural strength of the casing body.

The airflow channels 14 are respectively located between the first air duct plate 121 and the outer wall of the casing layer 11, and between the second air duct plate 122 and the outer wall of the casing layer 11. Specifically, two airflow channels 14 separated by the connecting rib 13 are formed between each first air duct plate 121 and the outer wall of the casing layer 11; each second air duct plate 122 forms an air flow channel 14 with the outer wall of the housing layer 11. Namely, twelve air flow channels 14 separated by connecting ribs 13 are arranged between the shell layer 11 and the air duct layer 12. Through the structure, the stable structure of the machine shell main body (namely, the structural strength of the connection between the air duct layer 12 and the machine shell layer 11 can be ensured by the distribution mode of the connecting ribs 13) can be ensured, so that the heat dissipation of the machine shell main body is uniform, the air flow channel 14 can be close to the stator cavity 111 on the inner side of the machine shell layer 11 as much as possible, the surface area of the air flow channel 14 is increased, and the heat dissipation efficiency of the machine shell main body is improved.

In order to improve the heat dissipation efficiency of the airflow channel 14,

heat dissipation ribs

123, 114 protruding in the radial direction may be added to the inner wall of the air duct layer 12 and the outer wall of the casing layer 11, and the

heat dissipation ribs

123, 114 are axially disposed. In particular, a plurality of heat dissipation ribs may be added to the inner wall of the air duct layer 12 and the outer wall of the casing layer 11 of each heat dissipation channel 14, and the heat dissipation ribs may increase the surface area of the heat dissipation channel 14, thereby improving the heat exchange efficiency between the heat dissipation channel 14 and the air flowing through the heat dissipation channel 14.

In another embodiment of the present invention, two axially disposed footing groove 124 are disposed on at least one first air duct plate 121 of the air duct layer 12, and the two footing groove 124 are respectively disposed on two sides of the air flow channel 14. The mounting and fixing of the cabinet main body can be realized by the footing slider groove 124.

In addition, the main body of the casing has a wiring hole 125, and the wiring hole 125 can be used for connecting the terminal box and the stator winding in the stator cavity 111. The wiring hole 125 may be formed in one of the first air passage plates 121 (i.e., the junction box is mounted to the first air passage plate 121).

In particular, in order to facilitate assembly for various applications and to improve versatility, the three first air duct plates 121 other than the first air duct plate 121 in which the wiring hole 125 is located have two axially disposed foot slider grooves 124, respectively.

The embodiment of the utility model provides a still provide an air-cooled motor, including stator, rotor, fan, front end housing, rear end cap, rear cover and as above the casing. The front end cover is fixedly arranged on the front end face of the machine shell main body, the rear end cover is fixedly arranged on the rear end face of the machine shell main body, the rear cover is arranged on the outer side of the rear end cover, and the fan is arranged in a fan cavity between the rear end cover and the rear cover. In the above-described air-cooled motor, the outlet of the fan chamber communicates with one opening of each airflow passage in the casing main body (i.e., an opening located in the rear end surface of the casing main body), and the other opening of the airflow passage is located on the side of the front cover.

Through the structure, the fan can enable external cold air to flow in from the rear end of the airflow channel and flow out from the front end of the airflow channel, and in the airflow channel, the air exchanges heat with the machine shell main body, so that the temperature of the machine shell main body is reduced. Because the airflow channel and the machine shell main body are integrated, when the motor is assembled, only the front end cover, the rear cover, the fan cover and the junction box are assembled on the machine shell step by step, so that the motor assembling process is simplified, and the assembling cost is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A machine shell is characterized by comprising a machine shell main body which is formed by integrally stretching a metal material, wherein the machine shell main body comprises a machine shell layer and an air duct layer, and the inner wall of the machine shell layer is enclosed to form a stator cavity; the air duct layer surrounds the shell layer, and an axial air flow channel is formed between the shell layer and the air duct layer; one axial end of the machine shell main body is provided with an assembling section formed by turning the air duct layer.

2. The casing of claim 1, wherein the outer wall of the casing layer and the inner wall of the air duct layer are respectively provided with radially protruding heat dissipation ribs, and the heat dissipation ribs are axially disposed.

3. The casing of claim 1, wherein the casing body further comprises a connection rib, and the air duct layer is supported and fixed on an outer layer of the casing layer through the connection rib.

4. The enclosure of claim 3, wherein the shell layer is circular and an outer wall of the shell layer includes a plurality of bosses; the assembling section is formed by turning the air duct layer and the connecting ribs to the top of the boss.

5. The cabinet of claim 4, wherein an axial through hole is provided in the boss, and the mounting hole is formed by tapping an end of the axial through hole.

6. The cabinet of claim 1, wherein the air duct layer includes four first air duct plates and four second air duct plates, and the first air duct plates have a width greater than that of the second air duct plates; the cross sections of the four first air duct plates are positioned on a square with the center of the shell main body as the center, and each second air duct plate is positioned between two adjacent first air duct plates and is respectively connected with the two adjacent first air duct plates.

7. The enclosure of claim 6, wherein at least one of the first duct plates of the duct layer has two axially disposed footing slider grooves disposed on each side of the airflow path between the first duct plate and the enclosure layer.

8. The enclosure of claim 7, wherein one of the first duct plates of the duct layer has wiring holes, and the other three first duct plates of the duct layer have two of the foot slider slots.

9. The closure of any of claims 1-8, wherein the axial length of the fitting segment is 5-10 cm.

10. An air-cooled motor, comprising a stator, a rotor, a fan, a front end cover, a rear end cover and a rear cover, wherein the fan is arranged in a fan cavity between the rear end cover and the rear cover, characterized in that the air-cooled motor further comprises the casing of any one of claims 1 to 9; wherein: the front end cover is assembled on the front end face of the shell, the rear end cover is assembled on the rear end face of the shell, an outlet of the fan cavity is communicated with one opening of the airflow channel, and the other opening of the airflow channel is located at one end, connected with the front end cover, of the shell.