CN113036990A - Ventilation cooling structure of permanent magnet motor - Google Patents
Ventilation cooling structure of permanent magnet motor Download PDFInfo
- Publication number
- CN113036990A CN113036990A CN201911251418.9A CN201911251418A CN113036990A CN 113036990 A CN113036990 A CN 113036990A CN 201911251418 A CN201911251418 A CN 201911251418A CN 113036990 A CN113036990 A CN 113036990A
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- Prior art keywords
- air
- end cover
- channel
- stator
- wall
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
- H02K9/18—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides a ventilation cooling structure of a permanent magnet motor, which comprises a shell, a first end cover, a second end cover, a stator and an air driving device. The shell is enclosed to form an installation channel, and the first end cover and the second end cover are respectively installed at two ends of the installation channel. The stator is arranged on the inner wall of the shell, the first air channel parallel to the central line of the installation channel is arranged on the stator, the second air channel which is also parallel to the central line of the installation channel is arranged between the inner wall and the outer wall of the shell, the first opening is formed in the outer wall of the shell, the second opening is formed in the first end cover, two ends of the first air channel and two ends of the second air channel are respectively communicated with the first opening and the second opening, and the air driving device drives air to flow in the first air channel and the second air channel. Compared with the condition that air flows in only a single cooling channel, the air can flow in the first air channel and the second air channel simultaneously, and the cooling effect of the motor is further improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a ventilation cooling structure of a permanent magnet motor.
Background
The permanent magnet motor comprises a shell, a stator, a rotor and a spindle, wherein the stator is arranged on the inner wall of the shell, the rotor is connected with the spindle, and the rotor is arranged in the shell; when electrified, the rotor rotates, and then the main shaft is driven to rotate.
In the related art, in order to avoid excessive temperature caused by heat accumulation generated during the operation of the motor, a cooling air duct is often arranged between an inner wall and an outer wall of a housing, a first opening of the cooling air duct is arranged on the outer wall of the housing, and a second opening of the cooling air duct is arranged at the front end of the housing along a direction parallel to the axis of the main shaft; a ventilation device is arranged outside a shell of the motor, when the motor works, the rotor drives the main shaft to rotate, air is driven by the ventilation device to enter the cooling air duct from the first opening, and the air flows out from the second opening to cool the motor.
However, the air flows only in the cooling passage, and the cooling effect of the motor is not good.
Disclosure of Invention
The embodiment of the invention provides a ventilation cooling structure of a permanent magnet motor, which is used for solving the technical problems that air only flows in a cooling channel and the cooling effect of the motor is poor in the prior art.
The embodiment of the invention provides a ventilation cooling structure of a permanent magnet motor, which comprises a shell, a first end cover, a second end cover, a stator and an air driving device, wherein the shell is provided with a first end cover and a second end cover; the shell is enclosed into a mounting channel, the first end cover covers one end of the mounting channel, and the second end cover covers the other end of the mounting channel.
The stator is arranged on the inner wall of the shell, a first air channel parallel to the central line of the installation channel is arranged on the stator, a second air channel is arranged between the inner wall of the shell and the outer wall of the shell, and the central line of the second air channel is parallel to the central line of the installation channel; a first opening is formed in the outer wall of the shell, a second opening is formed in the first end cover, one ends, facing the second end cover, of the first air duct and the second air duct are communicated with the first opening, and one ends, facing the first end cover, of the first air duct and the second air duct are communicated with the second opening; the air driving device is communicated with the first air channel and the second air channel and is used for driving air in the first air channel and the second air channel to flow.
The ventilation cooling structure for the permanent magnet motor is characterized in that the stator and the second end cover are enclosed to form a first cavity, one end of the first air duct facing the second end cover is communicated with the first cavity, and the first cavity is communicated with the first opening;
the stator and the first end cover are enclosed to form a second cavity, one end, facing the first end cover, of the first air channel and one end, facing the second end cover, of the second air channel are communicated with the second cavity, and the second cavity is communicated with the second opening.
The ventilation cooling structure for the permanent magnet motor is characterized in that the number of the first air ducts is multiple, and the first air ducts are arranged around the central line of the installation channel at intervals; the second air ducts are arranged around the central line of the installation channel at intervals.
The ventilation cooling structure for the permanent magnet motor is characterized in that a first annular flange is arranged on the inner wall of the second end cover, a first sealing ring is arranged between the first annular flange and the stator, and a first cavity is enclosed by the first sealing ring, the first annular flange, the second end cover and the shell.
The ventilation cooling structure for the permanent magnet motor is characterized in that a second annular flange is arranged on the inner wall of the first end cover, a second sealing ring is arranged between the second annular flange and the stator, and a second cavity is enclosed by the second sealing ring, the second annular flange, the first end cover and the shell.
The ventilation cooling structure of the permanent magnet motor comprises a first sealing ring, a second sealing ring and a third sealing ring, wherein the first sealing ring comprises a first sealing element and a first connecting part, one end of the first connecting part is fixedly connected with the first annular flange, and the other end of the first connecting part is connected with the first sealing element; the second sealing ring comprises a second sealing element and a second connecting part, one end of the second connecting part is fixedly connected with the second annular flange, and the other end of the second connecting part is connected with the second sealing element.
The ventilation cooling structure for the permanent magnet motor is characterized in that the first sealing element and the second sealing element are both rubber elements.
The ventilation cooling structure of the permanent magnet motor comprises a stator and a first air duct, wherein the stator comprises an iron core and a coil arranged on the iron core, the iron core is annular, and the first air duct is arranged on the iron core.
The ventilation cooling structure of the permanent magnet motor is characterized in that the inner wall of the shell is sunken to form the second air duct, and the outer wall of the iron core is attached to the inner wall of the shell.
The ventilation cooling structure of the permanent magnet motor further comprises a rotor and a main shaft, wherein the rotor is arranged in the shell and is connected with the main shaft, and the main shaft is rotatably connected with the first end cover and the second end cover; the first end cover is provided with a shaft hole, and part of the main shaft extends out of the shaft hole; the air driving device is arranged outside the shell and comprises a first air channel and a second air channel, wherein the first air channel and the second air channel are connected with an independent energy source and are used for driving air to flow in the first air channel and the second air channel.
The ventilation cooling structure of the permanent magnet motor provided by the embodiment of the invention comprises a shell, a first end cover, a second end cover, a stator and an air driving device. The shell is enclosed to form an installation channel, and the first end cover and the second end cover are respectively installed at two ends of the installation channel. The stator is arranged on the inner wall of the shell, the first air channel parallel to the central line of the installation channel is arranged on the stator, the second air channel which is also parallel to the central line of the installation channel is arranged between the inner wall and the outer wall of the shell, the first opening is formed in the outer wall of the shell, the second opening is formed in the first end cover, two ends of the first air channel and two ends of the second air channel are respectively communicated with the first opening and the second opening, and the air driving device drives air to flow in the first air channel and the second air channel. Compared with the condition that air flows in a single cooling channel, the air can flow in the first air channel and the second air channel simultaneously, and the cooling effect of the motor is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a permanent magnet motor ventilation cooling structure according to an embodiment of the present invention;
FIG. 2 is a right side view of a motor provided by an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a first seal ring provided in accordance with an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a second seal ring according to an embodiment of the present invention.
Description of reference numerals:
1: a housing;
11: a first opening;
12: a second air duct;
2: a first end cap;
21: a second opening;
22: a second annular flange;
23: a second seal ring;
231: a second seal member;
232: a second connecting portion;
24: a second cavity;
3: a second end cap;
31: a first annular flange;
32: a first seal ring;
321: a first seal member;
322: a first connection portion;
33: a first cavity;
4: a stator;
41: a first air duct;
5: a rotor;
6: a main shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the present invention, unless otherwise specifically stated, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a permanent magnet motor ventilation cooling structure according to an embodiment of the present invention; fig. 2 is a right side view of the motor according to the embodiment of the present invention, please refer to fig. 1 and fig. 2.
The embodiment of the invention provides a ventilation cooling structure of a permanent magnet motor, which comprises: the air-driven device comprises a shell 1, a first end cover 2, a second end cover 3, a stator 4 and an air driving device, wherein the shell 1 is enclosed into an installation channel, the first end cover 2 covers one end of the installation channel, and the second end cover 3 covers the other end of the installation channel.
The stator 4 is arranged on the inner wall of the shell 1, a first air duct 41 parallel to the central line of the installation channel is arranged on the stator 4, a second air duct 12 is arranged between the inner wall of the shell 1 and the outer wall of the shell 1, the central line of the second air duct 12 is parallel to the central line of the installation channel, a first opening 11 is arranged on the outer wall of the shell 1, a second opening 21 is arranged on the first end cover 2, one ends, facing the second end cover 3, of the first air duct 41 and the second air duct 12 are communicated with the first opening 11, one ends, facing the first end cover 2, of the first air duct 41 and the second air duct 12 are communicated with the second opening 21, and the air driving device is communicated with the first air duct 41 and the second air duct 12 and used for driving air in the first air duct 41 and the second air duct 12 to flow.
The casing 1 encloses and establishes the installation passageway, and first end cap 2 and second end cap 3 can all be connected with casing 1 through bolted connection's mode, and the three constitutes the shell of motor jointly. The housing 1, the first end cap 2 and the second end cap 3 may be manufactured by casting, and the material used may be common cast metal such as cast iron or cast aluminum.
Optionally, a plurality of cooling fins may be further disposed on the housing 1 of the motor, so that heat inside the motor can be dissipated through the cooling fins, and the cooling effect of the motor is further improved.
The first opening 11 formed in the housing 1 and the second opening 21 formed in the first end cap 2 are mainly used for air flowing, and the shape of the openings may be regular or irregular, such as square, circle, ellipse, etc., and the present embodiment is not limited thereto.
Alternatively, the first air duct 41 and the second air duct 12 may be inclined at an angle to the center line of the installation passage, in addition to being parallel to the center line of the installation passage. The first air duct 41 and the second air duct 12 may be straight passages, or may be provided as curved air ducts in which air flows for a longer distance than in a straight passage, thereby providing a better cooling effect.
Illustratively, in the permanent magnet motor provided in this embodiment, the rotor is a permanent magnet, the rotor is connected to the first end cap 2 and the second end cap 3 through bolts at openings at two ends of the installation channel, the stator 4 is composed of a stator core and a stator winding, the stator core is thermally sleeved on the inner wall of the housing 1, the stator core is provided with a first air duct 41, the housing 1 is provided with a second air duct 12 and a first opening 11, the first end cap 2 is provided with a second opening 21, one end of the first air duct 41 facing the first end cap 2 can be communicated with the second opening 21 through a pipeline, one end of the first air duct 41 facing the second end cap 3 is also communicated with the first opening 11 through a pipeline, so that air can flow into the first air duct 41 through the pipeline from the first opening 11, and finally flow out from the second opening 21 after passing through the first air duct 41, similarly, one end of the second air duct 12 facing the second end cap 3 is directly communicated with the first opening 11, one end of the second air duct 12 facing the first end cap 2 is communicated with the second opening 21 through a pipeline, so that air can directly flow into the second air duct 12 through the first opening 11, enters the pipeline after passing through the second air duct 12, and finally flows out through the second opening 21.
The ventilation cooling process of the motor provided by the embodiment is as follows: the air driving device drives the air to flow, so that the air flows in from the first opening 11, a part of the air enters the first air channel 41 from the first opening 11 and flows out from the second opening 21, and in the process that the air flows through the first air channel 41, heat exchange is generated between the air and the stator 4, heat is carried and flows out, and heat dissipation of the stator 4 is realized; the other part of air flows into the second air channel 12 from the first opening 11 and then flows out from the second opening 21, and in the process that the air flows through the second air channel 12, heat exchange is generated between the air and the shell 1, and then heat is carried to flow out, so that heat dissipation of the shell 1 is realized; the motor is cooled and radiated through two different air channels.
It should be noted that the air driving device can also drive the air to flow into the first air duct 41 and the second air duct 12 from the second opening 21 and flow out from the first opening 11. The flow direction of the air is not limited by the embodiment of the invention.
In the ventilation and cooling structure of the permanent magnet motor provided by this embodiment, the housing 1 is enclosed into an installation channel, and the first end cap 2 and the second end cap 3 are respectively installed at two ends of the installation channel. The inner wall of the shell 1 is provided with a stator 4, the stator 4 is provided with a first air channel 41 parallel to the central line of the installation channel, a second air channel 12 parallel to the central line of the installation channel is arranged between the inner wall and the outer wall of the shell 1, the outer wall of the shell 1 is provided with a first opening 11, the first end cover is provided with a second opening 21, two ends of the first air channel 41 and the second air channel 12 are respectively communicated with the first opening 11 and the second opening 21, and the air driving device drives air to flow in the first air channel 41 and the second air channel 12. Compared with the case where air flows only in a single cooling channel, the air in the present embodiment can flow in the first air channel 41 and the second air channel 12 at the same time, and take away heat from the stator 4 and the housing 1, thereby improving the cooling effect of the motor.
Optionally, the stator 4 and the second end cap 3 are enclosed to form a first cavity 33, one end of the first air duct 41 facing the second end cap 3 is communicated with the first cavity 33, the first cavity 33 is communicated with the first opening 11, the stator 4 and the first end cap 2 are enclosed to form a second cavity 24, one ends of the first air duct 41 and the second air duct 12 facing the first end cap 2 are communicated with the second cavity 24, and the second cavity 24 is communicated with the second opening 21.
The first cavity 33 is formed by enclosing the stator 4 and the second end cover 3, a part of side wall of the first cavity 33 is the side wall of the stator 4, when air flows, the air contacts the side wall of the stator 4 to take away heat, similarly, a part of side wall of the second cavity 24 is the side wall of the stator 4, when air flows, the heat on the side wall can also be taken away, and further, the cooling effect on the stator 4 is improved.
In this embodiment, the flowing direction of the air in the motor is not limited, for example, a part of the air enters the first cavity 33 from the first opening 11 under the driving of the air driving device, then enters the first air duct 41 from the first cavity 33, enters the second cavity 24 from the opening at the other end of the first air duct 41, another part of the air enters the second air duct 12 through the first opening 11, and then enters the second cavity 24, and the air in the first air duct 41 and the air in the second air duct 12 join inside the second cavity 24, and finally flow out from the second opening 21.
In this embodiment, the stator 4 and the second end cap 3 are enclosed to form the first cavity 33, one end of the first air duct 41 facing the second end cap 3 is communicated with the first opening 11 through the first cavity 33, the stator 4 and the first end cap 2 are enclosed to form the second cavity 24, one ends of the first air duct 41 and the second air duct 12 facing the first end cap 2 are communicated with the second opening 21 through the second cavity 24, the existing structure inside the motor is utilized to communicate the first air duct 41 with the first opening 11 and the second opening 21, and communicate the second air duct 12 with the second opening 21, no additional connecting part is needed, the structure is simple, and the workload of the motor during installation is reduced.
Optionally, the number of the first air ducts 41 is multiple, and the multiple first air ducts 41 are arranged around the central line of the installation channel at intervals; the number of the second air ducts 12 is plural, and the plural second air ducts 12 are arranged around the central line of the installation passage at intervals. The plurality of first air ducts 41 and the second air ducts 12 can improve the cooling effect on the stator 4 and the housing 1.
Under the condition of ensuring the structural strength of the housing 1 and the stator 4, the number of the specific settings of the first air duct 41 and the second air duct 12 can be set according to the actual needs of the user, which is not limited in this embodiment.
Optionally, the first air duct 41 and the second air duct 12 may be uniformly distributed along the central line of the installation channel at equal intervals, and at this time, the whole motor can uniformly dissipate heat, or a non-equal-interval distribution mode may also be adopted, for example, for an area with more heat accumulation, more first air ducts 41 and second air ducts 12 may be arranged compared with other areas, so as to improve the heat dissipation effect of the area.
In the embodiment, the plurality of first air ducts 41 and the plurality of second air ducts 12 are arranged at intervals around the center line of the installation channel, so that the whole motor can effectively dissipate heat, and the condition of poor local heat dissipation of the motor is improved.
Optionally, a first annular flange 31 is disposed on an inner wall of the second end cap 3, a first sealing ring 32 is disposed between the first annular flange 31 and the stator 4, and the first sealing ring 32, the first annular flange 31, the second end cap 3 and the housing 1 enclose a first cavity 33.
First annular flange 31 sets up on the inner wall of second end cover 3, and stretches out towards stator 4 direction, and one side and the first annular flange 31 of first sealing ring 32 are connected, and the opposite side is connected with stator 4, seals the gap between stator 4 and the first annular flange 31 for outside air receives the blockking of first sealing ring 32 when getting into first cavity 33, can't further enter into inside rotor 5 and the main shaft 6 of motor, and then avoids the air to influence rotor work.
In the embodiment, the first cavity 33 is defined by the first sealing ring 32, the first annular flange 31, the second end cover 3 and the housing 1, and the first sealing ring 32 seals a gap between the stator 4 and the first annular flange 31, so that air flows inside the first cavity 33 and cannot further enter the rotor 5 and the main shaft 6 of the motor, dust, foreign matters and the like carried in the air are prevented from entering the rotor 5 and the main shaft 6 of the motor, and the running stability of the motor is improved.
Optionally, a second annular flange 22 is disposed on an inner wall of the first end cap 2, a second sealing ring 23 is disposed between the second annular flange 22 and the stator 4, and the second sealing ring 23, the second annular flange 22, the first end cap 2, and the housing 1 enclose a second cavity 24.
The second annular flange 22 is arranged on the inner wall of the first end cover 2 and extends out towards the stator 4, one side of the second sealing ring 23 is connected with the second annular flange 22, the other side of the second sealing ring is connected with the stator 4, a gap between the stator 4 and the second annular flange 22 is sealed, external air is prevented from entering the interior of the rotor 5 and the main shaft 6 of the motor, and then the air is prevented from influencing the work of the rotor.
In the embodiment, the second cavity 24 is enclosed by the second sealing ring 23, the second annular flange 22, the first end cover 2 and the housing 1, and the second sealing ring 23 seals a gap between the stator 4 and the second annular flange 22, so that foreign matters or dust in external air cannot enter the rotor 5 and the main shaft 6 of the motor, and the running stability of the motor is improved.
FIG. 3 is an enlarged schematic view of a first seal ring provided in accordance with an embodiment of the present invention; fig. 4 is an enlarged schematic view of a second seal ring according to an embodiment of the present invention. With continued reference to fig. 3 and 4.
Optionally, the first sealing ring 32 includes a first sealing element 321 and a first connecting portion 322, one end of the first connecting portion 322 is fixedly connected to the first annular flange 31, and the other end is connected to the first sealing element 321; the second sealing ring 23 includes a second sealing member 231 and a second connecting portion 232, one end of the second connecting portion 232 is fixedly connected to the second annular flange 22, and the other end is connected to the second sealing member 231.
First connecting portion 322 be the annular, the terminal surface of annular medial surface and first annular flange 31 towards stator 4 passes through the bolt rigid coupling together, is provided with joint portion on first connecting portion 322's lateral surface, and the bottom of first sealing member 321 is provided with the joint groove to the joint is in first connecting portion 322's joint portion.
The second connecting portion 232 is also annular, and the annular medial surface passes through the bolt rigid coupling with the terminal surface of second annular flange 22 orientation stator 4 and is in the same place, is provided with joint portion on the lateral surface of second connecting portion 232, and the bottom of second sealing member 231 is provided with the joint groove to the joint is in the joint portion of second connecting portion 232.
Specifically, the clamping portion disposed on the first connecting portion 322 may be a "T" shaped structure, wherein a bottom end of the "T" shape extends perpendicularly from the first connecting portion 322 toward an end surface of the first sealing member 321. Correspondingly, a T-shaped groove is formed in the end surface of the first sealing element 321 facing the first connecting portion 322, and the T-shaped clamping portion can be clamped into the T-shaped groove, so that the first sealing element 321 is clamped on the first connecting portion 322.
Optionally, the clamping portion on the first connection portion 322 and the clamping groove on the first sealing element 321 may also be in other structural forms as long as the first sealing element 321 can be clamped on the first connection portion 322, which is not limited in this embodiment.
The clamping groove disposed on the second sealing element 232 may be the same as the clamping groove disposed on the first sealing element 321, and similarly, the clamping portion disposed on the second connecting portion 232 may also be the same as the clamping portion disposed on the first connecting portion 322, so as to achieve interchangeability between the first sealing element 321 and the second sealing element 232, which is not described in detail herein.
In the embodiment, the first sealing ring 32 is divided into the first sealing element 321 and the first connecting part 322, and the second sealing ring 23 is divided into the second sealing element 231 and the second connecting part 232, so that after the first sealing element 321 or the second sealing element 322 is aged or damaged, the damaged sealing element can be directly detached and replaced by a new sealing element, and the convenience of subsequent production and maintenance is improved.
Optionally, the first sealing member 321 and the second sealing member 231 are both rubber members.
Rubber is the preparation material of comparatively common sealing washer, can select different rubber types to adapt to the operating mode according to the service environment requirement of difference. For example, the first and second sealing members 321 and 231 may be made of natural rubber, which has good wear resistance, elasticity, and elongation; alternatively, the first seal member 321 and the second seal member 231 may be made of urethane rubber, which has good mechanical properties, high pressure resistance, and wear resistance.
The first sealing element 321 and the second sealing element 231 of the embodiment are made of rubber, the processing technology is mature, the processing is simple, and the production efficiency is effectively improved.
Specifically, the stator 4 includes an iron core and a coil disposed on the iron core, the iron core is annular, and the first air duct 41 is disposed on the iron core.
The first air duct 41 and the coil on the iron core need to be avoided from each other to prevent the coil from blocking the first air duct 41, for example, the coil on the iron core may be disposed at the middle portion of the iron core, and the first air duct 41 may be disposed at a position close to the inner wall of the housing 1, so as to prevent the coil on the iron core from blocking the first air duct 41.
The stator 4 of this embodiment includes the iron core and sets up the coil on the iron core, and the iron core is the annular, and first wind channel 41 sets up on stator core, can take away the heat on the iron core when the air flows, has improved the cooling effect of motor.
Optionally, the inner wall of the housing 1 is recessed to form a second air duct 12, and the outer wall of the iron core is attached to the inner wall of the housing 1.
When there are a plurality of second air ducts 12, a plurality of recesses are also required on the inner wall of the housing 1 to form the second air ducts.
It should be noted that the outer wall of the iron core and the inner wall of the casing 1 need to be completely attached to prevent air from flowing out of the second air duct 12 through the gap between the outer wall of the iron core and the inner wall of the casing 1.
In this embodiment, the second air duct 12 is composed of the housing 1 and the iron core, the inner wall of the housing 1 is recessed to form a groove, and the opening portion of the groove facing the stator 4 is sealed by the outer wall of the iron core, so that the second air duct 12 is formed.
Optionally, the ventilation cooling structure of the permanent magnet motor provided in this embodiment further includes a rotor 5 and a spindle 6, the rotor 5 is disposed in the housing 1, the rotor 5 is connected to the spindle 6, and the spindle 6 is rotatably connected to the first end cap 2 and the second end cap 3; the first end cover 2 is provided with a shaft hole, and part of the main shaft 6 extends out of the shaft hole;
in this embodiment, an air-moving device may be provided outside the housing, including a connection to a separate energy source, for moving air within the first and second air paths 41, 12. Because the air driving device has independent energy supply, the air driving device can continue to operate after the motor stops working, so that the heat dissipation and cooling of the motor which is not completely cooled can be continued.
In another possible implementation manner of this embodiment, the air driving device may further include fan blades, the fan blades are in transmission connection with the rotor 5 or the main shaft 6, when the motor works, the rotor 5 or the main shaft 6 rotates, and the fan blades are driven by the rotor 5 or the main shaft 6 to rotate so as to drive the air to flow. For example, the air driving device is arranged on a main shaft 6 of the motor, the fan blades are connected with the main shaft 6 through gear transmission, when the motor works, the main shaft 6 rotates, so that the fan blades are driven to rotate together, and driving air flows in the first air channel 41 and the second air channel 12; or, the air driving device can be placed independently of the main shaft 6 and is arranged at a position close to the first opening 11 or the second opening 21, the fan blades of the air driving device are in transmission connection with the main shaft 6 through a transmission belt, the main shaft 6 drives the belt to rotate, and the belt drives the fan to rotate, so that the air driving device drives the air to flow. The permanent magnet motor ventilation cooling structure of this embodiment includes rotor 5 and main shaft 6, and rotor 5 sets up inside casing 1, and is connected with main shaft 6, but main shaft 6 is in the same place with the driven connection of first end cover 2 and second end cover 3, and partial main shaft 6 stretches out through the shaft hole on the first end cover 2, and air drive device's flabellum is connected with the transmission of main shaft 6, utilizes the rotation of main shaft 6 to drive the flabellum drive air and flows, has saved the energy. 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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A permanent magnet motor ventilation cooling structure, characterized by comprising: the air-driven device comprises a shell, a first end cover, a second end cover, a stator and an air driving device; the shell is enclosed into an installation channel, the first end cover covers one end of the installation channel, and the second end cover covers the other end of the installation channel;
the stator is arranged on the inner wall of the shell, a first air channel parallel to the central line of the installation channel is arranged on the stator, a second air channel is arranged between the inner wall of the shell and the outer wall of the shell, and the central line of the second air channel is parallel to the central line of the installation channel; a first opening is formed in the outer wall of the shell, a second opening is formed in the first end cover, one ends, facing the second end cover, of the first air duct and the second air duct are communicated with the first opening, and one ends, facing the first end cover, of the first air duct and the second air duct are communicated with the second opening; the air driving device is communicated with the first air channel and the second air channel and is used for driving air in the first air channel and the second air channel to flow.
2. The ventilation cooling structure for the permanent magnet motor according to claim 1, wherein the stator and the second end cover enclose a first cavity, one end of the first air duct facing the second end cover is communicated with the first cavity, and the first cavity is communicated with the first opening;
the stator and the first end cover are enclosed to form a second cavity, one end, facing the first end cover, of the first air channel and one end, facing the second end cover, of the second air channel are communicated with the second cavity, and the second cavity is communicated with the second opening.
3. The ventilation cooling structure for the permanent magnet motor according to claim 2, wherein the first air duct is provided in plurality, and the plurality of first air ducts are arranged at intervals around a center line of the installation channel; the second air ducts are arranged around the central line of the installation channel at intervals.
4. The ventilation cooling structure for the permanent magnet motor according to claim 2, wherein a first annular flange is disposed on an inner wall of the second end cover, a first sealing ring is disposed between the first annular flange and the stator, and the first sealing ring, the first annular flange, the second end cover and the housing enclose a first cavity.
5. The ventilation cooling structure for permanent magnet motor according to claim 4, wherein a second annular flange is disposed on the inner wall of the first end cover, a second sealing ring is disposed between the second annular flange and the stator, and the second sealing ring, the second annular flange, the first end cover and the housing enclose a second cavity.
6. The ventilation cooling structure of the permanent magnet motor according to claim 4 or 5, wherein the first sealing ring comprises a first sealing element and a first connecting part, one end of the first connecting part is fixedly connected with the first annular flange, and the other end of the first connecting part is connected with the first sealing element; the second sealing ring comprises a second sealing element and a second connecting part, one end of the second connecting part is fixedly connected with the second annular flange, and the other end of the second connecting part is connected with the second sealing element.
7. The permanent magnet motor ventilation cooling structure of claim 6, wherein the first seal and the second seal are both rubber members.
8. The ventilation cooling structure for the permanent magnet motor according to any one of claims 1 to 5, wherein the stator comprises a core and a coil arranged on the core, the core is annular, and the first air duct is arranged on the core.
9. The ventilation cooling structure for the permanent magnet motor according to claim 6, wherein the second air duct is formed by recessing the inner wall of the housing, and the outer wall of the iron core is attached to the inner wall of the housing.
10. The permanent magnet electric machine ventilation cooling structure of any one of claims 1-5, further comprising a rotor and a main shaft, wherein the rotor is disposed within the housing and is connected to the main shaft, and the main shaft is rotatably connected to the first end cap and the second end cap; the first end cover is provided with a shaft hole, and part of the main shaft extends out of the shaft hole;
the air driving device is arranged outside the shell, is connected with an independent energy source and is used for driving air to flow in the first air channel and the second air channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251418.9A CN113036990A (en) | 2019-12-09 | 2019-12-09 | Ventilation cooling structure of permanent magnet motor |
| PCT/CN2020/098030 WO2021114607A1 (en) | 2019-12-09 | 2020-06-24 | Ventilation and cooling structure of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251418.9A CN113036990A (en) | 2019-12-09 | 2019-12-09 | Ventilation cooling structure of permanent magnet motor |
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| CN113036990A true CN113036990A (en) | 2021-06-25 |
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| CN201911251418.9A Pending CN113036990A (en) | 2019-12-09 | 2019-12-09 | Ventilation cooling structure of permanent magnet motor |
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| CN114665684B (en) * | 2022-05-24 | 2022-08-12 | 佛山登奇机电技术有限公司 | Direct-drive permanent magnet motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203674892U (en) * | 2014-01-24 | 2014-06-25 | 浙江大学 | Air cooling structure of permanent magnet synchronous traction motor |
| CN109217504A (en) * | 2017-06-29 | 2019-01-15 | 中车株洲电力机车研究所有限公司 | A kind of semi-open formula permanent magnet motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10335141B4 (en) * | 2003-07-31 | 2006-09-21 | Siemens Ag | Electric machine with coolant duct |
| CN104518614B (en) * | 2015-01-16 | 2017-10-27 | 上海中科深江电动车辆有限公司 | The cold cooling device of motor liquid and motor |
| US20160372982A1 (en) * | 2015-06-19 | 2016-12-22 | Ward Leonard Investment Holdings, LLC | Motor |
| CN107896016A (en) * | 2017-12-14 | 2018-04-10 | 江苏远东电机制造有限公司 | Composite cooling motor |
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2019
- 2019-12-09 CN CN201911251418.9A patent/CN113036990A/en active Pending
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203674892U (en) * | 2014-01-24 | 2014-06-25 | 浙江大学 | Air cooling structure of permanent magnet synchronous traction motor |
| CN109217504A (en) * | 2017-06-29 | 2019-01-15 | 中车株洲电力机车研究所有限公司 | A kind of semi-open formula permanent magnet motor |
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