CN220874318U

CN220874318U - Double-cooling permanent magnet three-phase synchronous motor

Info

Publication number: CN220874318U
Application number: CN202322401105.5U
Authority: CN
Inventors: 朱文钦; 方玉兰; 张建波; 任建波; 刘爱国
Original assignee: Jiangsu Huanqiu Special Motor Co ltd
Current assignee: Jiangsu Huanqiu Special Motor Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-04-30
Anticipated expiration: 2033-09-05

Abstract

The utility model discloses a double-cooling permanent magnet three-phase synchronous motor, which relates to the technical field of motors and comprises a base, wherein a front end cover and a rear end cover which are coaxial with the base are respectively fixed at two ends of the base, an output shaft is commonly installed on the front end cover and the rear end cover, a fan blade is fixed at one end of the output shaft close to the rear end cover, the base is cylindrical, a groove with an annular structure is formed at one end of the base facing the rear end cover, an inner end cover which is coaxial with the base is fixed at one end of the base, the rear end cover and the inner end cover are positioned at the same end of the base, a heat insulation plate for dividing the inner end cover into a first empty groove and a second empty groove is fixed in the groove, and the first empty groove is positioned at the outer side of the second empty groove.

Description

Double-cooling permanent magnet three-phase synchronous motor

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a double-cooling permanent magnet three-phase synchronous motor.

Background

The permanent magnet synchronous motor has the advantages of simple structure, small volume, high efficiency, high power factor and the like. Permanent magnet synchronous motors have achieved performance in medium and low voltage motors in metallurgical industries (iron works, sintering plants, etc.), ceramic industries (ball mills), rubber industries (internal mixers), petroleum industries (pumping units), textile industries (two-for-one twisters, spinning frames), etc., and gradually accumulate design and operation experience.

Chinese patent publication No. CN209282960U discloses a wind-liquid double-cooled permanent magnet wind power generator, comprising: a rotating shaft, a stator, an outer rotor device and a cooling device. The rotating shaft consists of a fixed shaft, a movable shaft, a front bearing, a rear bearing and a connecting fluted disc. The stator consists of an iron core and windings. The outer rotor device consists of an outer rotor, magnetic steel, an outer rotor end cover and an outer rotor rib plate. The cooling device consists of a cooling pipe and a guide cover. In the operation of the generator, the cooling liquid is conveyed into the cooling pipe, and cold air is guided to enter the surface of the outer rotor by utilizing the guide cover to take away high temperature generated by the generator, so that the generator can operate in a proper temperature environment.

The device takes away the high temperature generated in the operation of the permanent magnet wind driven generator by utilizing the cold-heat exchange principle through the cooling pipe and the air guide sleeve, thereby avoiding the high temperature damage and the low-efficiency operation of the permanent magnet wind driven generator, but the cold air absorbing the heat is directly discharged outdoors and cannot be utilized, and further the heat energy waste is caused.

Disclosure of utility model

The utility model aims to provide a double-cooling permanent magnet three-phase synchronous motor, which solves the problem of the traditional double-cooling permanent magnet three-phase synchronous motor xxxx.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a double-cooling permanent magnet three-phase synchronous motor, which comprises a base, wherein a front end cover and a rear end cover which are coaxial with the base are respectively fixed at two ends of the base, an output shaft is jointly installed on the front end cover and the rear end cover, a fan blade is fixed at one end of the output shaft close to the rear end cover, the base is cylindrical, a groove with an annular structure is formed at one end of the base facing the rear end cover, an inner end cover which is coaxial with the base is fixed at one end of the base, the rear end cover and the inner end cover are positioned at the same end of the base, a heat insulation plate for dividing the groove into a first empty groove and a second empty groove is fixed in the groove, the first empty groove is positioned at the outer side of the second empty groove, the first empty groove is positioned between the rear end cover and the inner end cover, the inner end cover covers the second empty groove, a pipeline component for refrigeration is jointly installed at one end of the rear end cover facing away from the base, and a wind-guiding component is installed at the central area of the base.

Further, the pipeline assembly comprises a return pipe, a cooling pipe and a vortex pipe, one end of the return pipe is communicated with one end of the cooling pipe, and one end of the vortex pipe is communicated with the other end of the cooling pipe.

Further, the vortex tube is the heliciform and spirals on the front end housing, just the vortex tube is located the central zone of base, the cooling tube is the heliciform and is located the second empty slot, the back flow is the heliciform and is located first empty slot, the one end of vortex tube is drawn forth to outside from the front end housing, the one end of back flow is drawn forth to outside from the base.

Further, radiating fins distributed at equal intervals are arranged in the first empty groove, and the return pipe penetrates through each radiating fin.

Further, the induced air subassembly includes the air exchange lid, the air exchange lid is the drum structure, the annular channel rather than coaxial is seted up to the inner end lid one side outer wall of orientation of air exchange lid, the annular channel is located between inner end lid and the rear end cap.

Further, the mounting hole communicated with the annular groove is formed in the inner side wall of the air exchange cover, the first electromagnetic valve is mounted on the inner wall of the mounting hole, the second electromagnetic valve is mounted at one end of the air exchange cover, and the second temperature detector and the first temperature detector are mounted on the inner side wall and the outer side wall of the rear end cover respectively.

The utility model has the following beneficial effects:

When the output shaft rotates, the output shaft drives the fan blades to rotate, the fan blades rotate along with the output shaft to generate wind suction force, external air is introduced from the front end cover, so that the interior of the motor is cooled and radiated, when the external air is introduced into the motor from the front end cover by the fan blades, the wind can whirl tube, so that the wind is refrigerated to form cold wind, thereby improving the refrigeration efficiency of air cooling, if the temperature of the cold wind absorbing heat is not more than the temperature of the second empty groove, namely the temperature detected by the first temperature detector is not less than the temperature of the second temperature detector, the first electromagnetic valve is opened, the second electromagnetic valve is closed, the cold wind flows into the second empty groove, the return pipe is cooled, the refrigerating liquid which is ready to be returned to the refrigerating system is pre-refrigerated, the power used by the refrigerating system is reduced, the energy conservation is realized, and the energy utilization rate of the double-cooling system of the whole motor is simultaneously improved

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a double-cooling permanent magnet three-phase synchronous motor;

Fig. 2 is a schematic diagram of the internal layout (stator, rotor, etc. are not shown in the drawings) of a double-cooling permanent-magnet three-phase synchronous motor;

FIG. 3 is a schematic side view of a double-cooled permanent magnet three-phase synchronous motor;

FIG. 4 is a schematic cross-sectional view of the structure of FIGS. 3A-A of a double-cooled permanent magnet three-phase synchronous motor;

In the drawings, the list of components represented by the various numbers is as follows:

1. A front end cover; 2. a base; 3. an output shaft; 4. a ventilation cover; 41. an electromagnetic valve I; 42. a second electromagnetic valve; 43. an annular groove; 5. a rear end cover; 6. a first temperature detector; 7. an inner end cap; 8. a second temperature detector; 9. a return pipe; 10. a cooling tube; 11. a swirl tube; 12. a fan blade; 13. a heat dissipating fin; 14. and the heat insulation plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model relates to a double-cooling permanent magnet three-phase synchronous motor, which comprises a base 2, wherein a front end cover 1 and a rear end cover 5 which are coaxial with the base are respectively fixed at two ends of the base 2, a plurality of air inlets are formed on the front end cover 1, an output shaft 3 for power transmission is commonly arranged on the front end cover 1 and the rear end cover 5, (the prior structures such as a stator and a rotor are not shown in the drawings), the detailed position and the working principle of internal components of the motor are not illustrated here), a fan blade 12 is fixed at one end of the output shaft 3 close to the rear end cover 5, when the output shaft 3 rotates, the output shaft 3 drives the fan blade 12 to rotate, the fan blade 12 rotates along with the output shaft 3 to generate wind absorbing force, external air is introduced from the front end cover 1, thereby the interior of the motor is cooled by wind, the base 2 is cylindrical, the base 2 is provided with a groove with an annular structure towards one end of the rear end cover 5, one end of the base 2 is fixedly provided with an inner end cover 7 coaxial with the base, the fan blades 12 are positioned in the inner side area of the inner end cover 7, the inner end cover 7 is also provided with an air port, the rear end cover 5 and the inner end cover 7 are positioned at the same end position of the base 2, the inside of the groove is fixedly provided with a heat insulation plate 14 dividing the groove into a first empty groove and a second empty groove, the heat insulation plate 14 is used for heat insulation, the first empty groove and the second empty groove are mutually independent and cannot carry out heat transfer, part of the air port on the front end cover 1 is communicated with the second empty groove, the first empty groove is positioned at the outer side of the second empty groove, the first empty groove is positioned between the rear end cover 5 and the inner end cover 7, the inner end cover 7 covers the second empty groove, the first empty groove, the second empty groove and the central area of the base 2 are jointly provided with a pipeline component for refrigeration, the pipe assembly is connected with an external circulation refrigeration system (the circulation refrigeration system is not shown in the drawing, and is most commonly a circulation refrigeration system formed by a refrigerator, a water tank and a circulating water pump), and one end of the rear end cover 5, which is away from the base 2, is provided with an induced air assembly for changing the flow direction of air.

As shown in fig. 2 and fig. 4, the pipeline assembly comprises a return pipe 9, a cooling pipe 10 and a vortex pipe 11, one end of the return pipe 9 is communicated with one end of the cooling pipe 10, one end of the vortex pipe 11 is communicated with the other end of the cooling pipe 10, the vortex pipe 11 is spirally wound on the front end cover 1, the vortex pipe 11 is positioned in the central area of the base 2, the cooling pipe 10 is spirally positioned in the second empty groove, the return pipe 9 is spirally positioned in the first empty groove, one end of the vortex pipe 11 is led out from the front end cover 1, and one end of the return pipe 9 is led out from the base 2 to the outside;

The following is a supplementary explanation: the vortex tube 11 is an inlet end of cooling liquid, the cooling tube 10 carries out refrigeration work on the inside of the motor, and the return tube 9 is used for sending the cooling liquid after absorbing heat back to the refrigeration system for refrigeration;

From the above, it can be seen that: when outside air is introduced into the motor from the front end cover 1 by the fan blades 12, wind can swirl the tube 11, so that the wind is refrigerated to form cold air, and the refrigeration efficiency of air cooling is improved.

As shown in fig. 2 and fig. 4, radiating fins 13 are equidistantly distributed in the first empty groove, the return pipe 9 penetrates through each radiating fin 13, and the radiating fins 13 are used for increasing the radiating area of the return pipe 9.

As shown in fig. 2, the air induction assembly comprises an air exchange cover 4, the air exchange cover 4 is in a cylindrical structure, an annular groove 43 coaxial with the air exchange cover 4 is formed in the outer wall of one side of the air exchange cover 4 facing the inner end cover 7, the annular groove 43 is positioned between the inner end cover 7 and the rear end cover 5, a mounting hole communicated with the annular groove 43 is formed in the inner side wall of the air exchange cover 4, a first electromagnetic valve 41 is mounted on the inner wall of the mounting hole, a second electromagnetic valve 42 is mounted at one end of the air exchange cover 4, and a second temperature detector 8 and a first temperature detector 6 are respectively mounted on the inner side wall and the outer side wall of the rear end cover 5;

The following is a supplementary explanation: the temperature detector II 8 and the temperature detector I6 are electrically connected with the opening and closing system of the electromagnetic valve I41 and the opening and closing system of the electromagnetic valve II 42, if the temperature detected by the temperature detector I6 is smaller than the temperature detected by the temperature detector II 8, the electromagnetic valve I41 is closed, the electromagnetic valve II 42 is opened, and if the temperature detected by the temperature detector I6 is not smaller than the temperature detected by the temperature detector II 8, the electromagnetic valve I41 is opened, and the electromagnetic valve II 42 is closed;

From the above, it can be seen that: if the temperature of cold air absorbing heat is not greater than the temperature of the second empty groove, namely the temperature detected by the first temperature detector 6 is not less than the temperature detected by the second temperature detector 8, the first electromagnetic valve 41 is opened, the second electromagnetic valve 42 is closed, cold air flows into the second empty groove, the return pipe 9 is subjected to air cooling, the refrigerating fluid ready to be returned to the refrigerating system is subjected to pre-refrigeration, the power used by the refrigerating system is reduced, the energy saving is realized, and the energy utilization rate of the whole motor double-cooling system is improved.

One specific application of this embodiment is: when the output shaft 3 rotates, the output shaft 3 drives the fan blades 12 to rotate, the fan blades 12 rotate along with the output shaft 3 to generate wind suction force, external air is introduced from the front end cover 1, so that the inside of the motor is subjected to wind cooling and heat dissipation, when the external air is introduced into the inside of the motor from the front end cover 1 by the fan blades 12, wind can swirl tube 11, so that the wind is refrigerated to form cold wind, thereby improving the air cooling efficiency, if the temperature of the cold wind for absorbing heat is not greater than the temperature of the second empty groove, namely the temperature detected by the first temperature detector 6 is not less than the temperature detected by the second temperature detector 8, the first electromagnetic valve 41 is opened, the second electromagnetic valve 42 is closed, the cold wind flows into the second empty groove, the return pipe 9 is subjected to wind cooling, the refrigerating liquid to be sent back to the refrigerating system is subjected to pre-refrigeration, the power used by the refrigerating system is reduced, the energy conservation is realized, and the energy utilization rate of the whole motor double-cooling system is improved.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a double cooling permanent magnetism three-phase synchronous motor, includes base (2), the both ends of base (2) are fixed with respectively rather than coaxial front end housing (1) and rear end housing (5), output shaft (3) are installed jointly to front end housing (1) and rear end housing (5), the one end that output shaft (3) is close to rear end housing (5) is fixed with flabellum (12), its characterized in that: the base (2) is cylindricly, the recess that is annular structure is seted up towards the one end of rear end cap (5) to base (2), the one end of base (2) is fixed with rather than coaxial inner end cap (7), rear end cap (5) are located base (2) same end position with inner end cap (7), the inside of recess is fixed with heat insulating board (14) that divide into first empty tank and second empty tank with it, first empty tank is located the outside of second empty tank, first empty tank is located between rear end cap (5) and inner end cap (7) position, inner end cap (7) cover is on the second empty tank, pipeline subassembly that is used for refrigerating is installed jointly to first empty tank, second empty tank and base (2) central zone, induced air subassembly is installed to the one end that rear end cap (5) deviate from base (2).

2. A double-cooling permanent magnet three-phase synchronous motor according to claim 1, characterized in that the pipe assembly comprises a return pipe (9), a cooling pipe (10) and a vortex pipe (11), one end of the return pipe (9) is communicated with one end of the cooling pipe (10), and one end of the vortex pipe (11) is communicated with the other end of the cooling pipe (10).

3. A double-cooling permanent magnet three-phase synchronous motor according to claim 2, characterized in that the vortex tube (11) spirals on the front end cover (1) in a vortex shape, the vortex tube (11) is positioned in the central area of the base (2), the cooling tube (10) is positioned in the second empty slot in a spiral shape, the return tube (9) is positioned in the first empty slot in a spiral shape, one end of the vortex tube (11) is led out from the front end cover (1) to the outside, and one end of the return tube (9) is led out from the base (2) to the outside.

4. A double-cooling permanent magnet three-phase synchronous motor according to claim 3, characterized in that the interior of the first empty slot is provided with heat radiating fins (13) distributed equidistantly, and the return pipe (9) penetrates each heat radiating fin (13).

5. The double-cooling permanent magnet three-phase synchronous motor according to claim 1, wherein the induced air component comprises a wind exchanging cover (4), the wind exchanging cover (4) is of a cylindrical structure, an annular groove (43) coaxial with the wind exchanging cover (4) is formed in the outer wall of one side of the wind exchanging cover, facing the inner end cover (7), and the annular groove (43) is located between the inner end cover (7) and the rear end cover (5).

6. The double-cooling permanent magnet three-phase synchronous motor according to claim 5, wherein an installation hole communicated with the annular groove (43) is formed in the inner side wall of the air exchange cover (4), the first electromagnetic valve (41) is installed on the inner wall of the installation hole, the second electromagnetic valve (42) is installed at one end of the air exchange cover (4), and the second temperature detector (8) and the first temperature detector (6) are respectively installed on the inner side wall and the outer side wall of the rear end cover (5).