CN113178978B - A protective device for a double-salient permanent magnet synchronous motor - Google Patents
A protective device for a double-salient permanent magnet synchronous motor Download PDFInfo
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- CN113178978B CN113178978B CN202110519699.2A CN202110519699A CN113178978B CN 113178978 B CN113178978 B CN 113178978B CN 202110519699 A CN202110519699 A CN 202110519699A CN 113178978 B CN113178978 B CN 113178978B
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 28
- 230000001681 protective effect Effects 0.000 title claims abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000017525 heat dissipation Effects 0.000 claims abstract description 18
- 238000013021 overheating Methods 0.000 claims abstract 2
- 230000009471 action Effects 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 2
- 238000010408 sweeping Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
- B03C3/64—Use of special materials other than liquids synthetic resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/743—Cleaning the electrodes by using friction, e.g. by brushes or sliding elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
本发明涉及一种用于双凸极永磁同步电机的防护装置，包括：电机壳体；电机端盖，固定连接于电机壳体的端部侧壁，与电机壳体以及电机之间形成一内腔，且内腔设置有吸尘机构，同时所述电机端盖上设置有散热机构；安装座，其具有一中空内腔，且设置有一开口，并固定连接于电机端盖的内侧壁；转子，设置在电机壳体的内部，其一端贯穿安装座的开口并转动连接在电机端盖上，另一端贯穿设置于双凸极永磁同步电机的中心；传感器总成，固定安装在电机壳体的外侧壁上，其内部固定设置有温度传感器与震动传感器根据监测到的电机温度与转子震动数据，控制电机运行，可有效防止电机过热运行。本发明具有除尘防护功能强和散热效果好的优点。
The present invention relates to a protective device for a double-salient-pole permanent-magnet synchronous motor, comprising: a motor housing; a motor end cover, which is fixedly connected to the end side wall of the motor housing, and forms an inner cavity with the motor housing and the motor, and the inner cavity is provided with a dust suction mechanism, and the motor end cover is provided with a heat dissipation mechanism; a mounting seat, which has a hollow inner cavity, is provided with an opening, and is fixedly connected to the inner side wall of the motor end cover; a rotor, which is arranged inside the motor housing, one end of which passes through the opening of the mounting seat and is rotatably connected to the motor end cover, and the other end passes through the center of the double-salient-pole permanent-magnet synchronous motor; a sensor assembly, which is fixedly installed on the outer side wall of the motor housing, and a temperature sensor and a vibration sensor are fixedly arranged inside the sensor assembly. According to the monitored motor temperature and rotor vibration data, the motor operation is controlled, and the motor overheating operation can be effectively prevented. The present invention has the advantages of strong dust removal protection function and good heat dissipation effect.
Description
Technical Field
The invention relates to the field of motor protection, in particular to a protection device for a doubly salient permanent magnet synchronous motor.
Background
In recent years, a double salient pole motor in which both stator poles and rotor poles are salient pole structures has been widely studied, and the double salient pole motor can be classified into a double salient pole permanent magnet synchronous motor and a switched reluctance motor according to the presence or absence of permanent magnets, and compared with the double salient pole permanent magnet synchronous motor and the switched reluctance motor, only permanent magnets are added to the stator, so that higher output torque can be obtained. The motor output torque is increased, the motor power is also increased, the motor can be overheated, and the motor can be overheated when the motor is used in an environment with poor ventilation.
The utility model provides a doubly salient PMSM can monitor the inside operating temperature of motor through configuration temperature sensing device, but it only has the monitoring function, when the motor overheated, the motor of motor inside accumulated heat unable effective effluvium, the motor of long-time operation under overheated state, very easily break down and damage, and current synchronous motor is in the operation in-process, the inside a large amount of dust of easily getting into of motor, in the past for a long time, can seriously influence the life of motor, for this we propose a protector for doubly salient PMSM, solve above problem.
Disclosure of Invention
The invention aims to provide a protection device for a doubly salient permanent magnet synchronous motor, which has the advantages of good heat dissipation effect and strong dust removal protection function, and effectively prolongs the service life of the motor.
To achieve the above object, the present invention provides a protection device for a doubly salient permanent magnet synchronous motor, comprising: a motor shell, the inside of which is provided with a double-salient permanent magnet synchronous motor; the motor end cover is fixedly connected to the side wall of the end part of the motor shell, an inner cavity is formed between the motor end cover and the motor, the inner cavity is provided with a dust collection mechanism, and meanwhile, the motor end cover is provided with a heat dissipation mechanism; the mounting seat is provided with a hollow inner cavity and an opening, and is fixedly connected to the inner side wall of the motor end cover; the rotor is arranged in the motor shell, one end of the rotor penetrates through the opening of the mounting seat and is rotationally connected to the motor end cover, and the other end of the rotor penetrates through the center of the doubly salient permanent magnet synchronous motor; the sensor assembly is fixedly arranged on the outer side wall of the motor shell, and a temperature sensor and a vibration sensor are fixedly arranged in the sensor assembly and used for controlling the motor to operate according to the monitored motor temperature and rotor vibration data, so that the motor can be effectively prevented from overheat operation.
Wherein, a protector for doubly salient PMSM still include: the support bearing is fixedly arranged in the inner cavity of the mounting seat and used for supporting the rotor; the fan blades are fixedly sleeved on the side wall of the rotor and used for increasing air flow; the ash collecting box is fixedly arranged on the outer side wall of the bottom end of the motor end cover and corresponds to the ash falling port which is formed in a penetrating manner on the side wall of the bottom end of the motor end cover.
Wherein, dust absorption mechanism includes: two dust collection mechanism components symmetrically arranged on the side walls of the two sides of the mounting seat; the mounting ring is fixedly sleeved on the rotor and positioned between the mounting seat and the fan blade; the mounting ring is used for connecting two dust collection mechanism components.
Further, the dust collection mechanism assembly includes: the rubber plate is arranged on one side wall of the mounting seat; the fixed rod is fixedly connected to the side wall of the mounting ring; the rotating plate is fixedly connected to the end part of the fixed rod; mao Piceng, one side of which is fixedly arranged on the side wall of the rotating plate, and the other side of which is in friction contact with the side wall of the rubber plate; a sliding groove is arranged on the upper surface of the sliding groove, the side wall of the end part of the rotating plate is provided with a groove; the second sliding block is arranged in the sliding groove; one end of the limiting block is connected with one end of the second sliding block, and the other end of the limiting block is connected with the inner side wall of the sliding groove through a spring; the brush rod is fixedly connected to one end of the second sliding block, which is not connected with the limiting block, and a brush is fixedly arranged on the side wall of the brush rod opposite to the rubber plate; the overflow ring is fixedly arranged on the inner side wall of the motor end cover, can block cleaned dust, and avoids the dust from being brought into the motor by airflow.
Further, the inner wall of one end of the sliding groove, which is close to the brush rod, is provided with a bump, the limiting block is positioned between the bump and the spring, and the bump and the limiting block limit the moving range of the second sliding block together, so that the second sliding block is prevented from sliding out of the sliding groove thoroughly.
Wherein, the brush is in friction contact with the side wall of the rubber plate, so that the rubber plate is provided with an electrostatic core due to friction.
The heat dissipation mechanisms are symmetrically arranged on the upper side wall and the lower side wall of the motor end cover respectively; each heat dissipation mechanism includes: the sliding cavity is arranged on the upper side wall or the lower side wall of the motor end cover and is provided with a sliding opening; the first sliding block is arranged in the sliding cavity and is in sealed sliding connection with the sliding cavity; the air inlet penetrates through the side wall of the end part of the motor end cover, and the inner side wall of the air inlet is connected with a dustproof cover plate in a sliding manner; the air holes penetrate through the dustproof cover plate and are used for radiating and isolating dust in the air; one end of the connecting rod is fixedly connected to the inner side wall of the dustproof cover plate, and the other end of the connecting rod is fixedly connected to the inner side wall of the first sliding block, so that the dustproof cover plate is connected with the first sliding block through the linkage of the connecting rod.
The inner cavity formed by the first sliding block and the sliding cavity is provided with gas which is easy to thermally expand.
When the rotor rotates at a high speed, the sliding block applies thrust to the brush rod and drives the brush to separate from the rubber plate under the action of centrifugal force, so that dust adsorbed on the rubber plate can be prevented from being cleaned by the brush; when the rotating speed of the rotor is reduced, the centrifugal force is reduced, the spring is contracted, the sliding block is subjected to the tensile force exerted by the spring, and the hairbrush is in friction contact with the rubber plate, so that dust adsorbed on the rubber plate is cleaned down and blocked by the overflow ring.
When the temperature inside the motor is higher, the gas in the sliding cavity is heated and expanded, thrust is applied to the first sliding block, the first sliding block applies thrust to the connecting rod, the connecting rod drives the dustproof cover plate to slide, the gas port is completely opened, the air inflow is increased, the air flow exchange efficiency is improved, and the purpose of heat dissipation is achieved.
In summary, compared with the prior art, the protection device for the doubly salient permanent magnet synchronous motor provided by the invention has the following beneficial effects:
1. Through the cooperation between rotor, the collar, the dead lever, the commentaries on classics board, mao Piceng, the rubber slab, the brush-holder stud uses, at the motor operation in-process, the rotation of rotor drives the cortex on the commentaries on classics board lateral wall constantly with the friction of rubber slab, make the rubber slab surface carry static charge, and then make and get into the inside dust of motor together with the air and can be adsorbed by the rubber slab, realize the function to entering into the inside automatic dust removal of air of motor, and when the motor stall gradually, the brush of setting on the brush-holder stud on the commentaries on classics board lateral wall can laminate with the surface of rubber slab, along with the slow rotation of commentaries on classics board, can get up the dust automatic clearance of absorption at the rubber slab surface, and collect by album grey box is concentrated, in order to prevent this motor operation in-process, the dust takes place at the inside condition of motor accumulation.
2. Through the cooperation between rotor, fan blade, smooth chamber, first slider, the connecting rod, the air inlet, dustproof apron is used, during the motor operation, fan blade on rotor lateral wall rotates along with the rotor is synchronous, constantly inhale external low temperature air to the motor inside, increase the air current and flow, effectively dispel the heat to the motor inside, when the motor inside temperature is too high, the sealed space gas thermal expansion in the interior chamber of motor end cover lateral wall can drive first slider slip, make the connecting rod promote the inside dustproof apron of air inlet, automatically thoroughly open the air inlet port, increase the ventilation area of air inlet, promote the radiating effect, and through the inside temperature change condition of temperature sensor real-time supervision motor, prevent the motor long-time operation and arouse the trouble under overheated state.
Drawings
Fig. 1 is a schematic top view of a guard for a doubly salient permanent magnet synchronous motor according to the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1A according to the present invention;
FIG. 3 is an enlarged schematic view of the B of FIG. 1 in accordance with the present invention;
FIG. 4 is a side view of a portion of the structure of a rubber plate of a guard for a doubly salient permanent magnet synchronous motor according to the present invention;
FIG. 5 is a side view of a rotor plate portion of a guard for a doubly salient permanent magnet synchronous motor according to the present invention;
fig. 6 is a side view of a motor end cover structure of a guard device for a double salient permanent magnet synchronous motor of the present invention.
Detailed Description
The technical scheme, constructional features, achieved objects and effects of the embodiments of the present invention will be described in detail below with reference to fig. 1 to 6 in the embodiments of the present invention.
It should be noted that, the drawings are in very simplified form and all use non-precise proportions, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any modification of structure, change of proportion or adjustment of size, without affecting the efficacy and achievement of the present invention, should still fall within the scope covered by the technical content disclosed by the present invention.
It is noted that in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention provides a protection device for a doubly salient permanent magnet synchronous motor, as shown in fig. 1, 4 and 6, comprising: a motor housing 1, inside which a doubly salient permanent magnet synchronous motor is arranged; the motor end cover 2 is fixedly connected to the side wall of the end part of the motor shell 1, an inner cavity is formed between the motor end cover 2 and the motor shell 1 and between the motor end cover 2 and the motor, a dust collection mechanism is arranged in the inner cavity, and a heat dissipation mechanism is arranged on the motor end cover 2; the mounting seat 5 is provided with a hollow inner cavity and is provided with an opening, and the mounting seat 5 is fixedly connected to the inner side wall of the motor end cover 2; the rotor 4 is arranged in the motor shell 1, one end of the rotor penetrates through the opening of the mounting seat 5 and is rotationally connected to the motor end cover 2, and the other end of the rotor penetrates through the center of the doubly salient permanent magnet synchronous motor; the support bearing 6 is fixedly arranged in the inner cavity of the mounting seat 5 and sleeved on the rotor 4; the fan blades 7 are fixedly sleeved on the rotor 4 and used for increasing air flow and improving heat dissipation efficiency; the sensor assembly 3 is fixedly arranged on the outer side wall of the motor shell 1, a temperature sensor and a vibration sensor are fixedly arranged in the sensor assembly 3, and the operation of the motor is controlled through an external controller according to the monitored motor temperature and rotor vibration data, so that the overheat operation of the motor can be effectively prevented; the dust collecting box 26 is fixedly arranged on the outer side wall of the bottom end of the motor end cover 2 and corresponds to the dust falling port formed in the bottom end of the motor end cover 2 in a penetrating manner.
As shown in fig. 1, 3 and 5, the dust collection mechanism includes: two dust collection mechanism components symmetrically arranged on the side walls of the two sides of the mounting seat 5; the mounting ring 16 is fixedly sleeved on the rotor 4 and is positioned between the mounting seat 5 and the fan blade 7; the mounting ring 16 is used to connect two vacuum mechanism assemblies.
Wherein each dust extraction mechanism subassembly contains: a rubber plate 15 provided on one side wall of the mount 5; a fixing rod 17 fixedly connected to a side wall of the mounting ring 16; a rotating plate 18 fixedly connected to an end of the fixing rod 17; mao Piceng 19, one side of which is fixedly arranged on the side wall of the rotating plate 18, and the other side of which is in friction contact with the side wall of the rubber plate 15; a sliding groove 20, which is arranged on the side wall of the end part of the rotating plate 18, a second sliding block 21 is arranged in the sliding groove, and a bump 28 for preventing the second sliding block 21 from sliding is arranged at one end of the sliding groove 20 far away from the inner side wall; the limiting block 27 is fixedly connected to one end of the second sliding block 21, which is close to the rotating plate 18; one end of the spring 22 is fixedly connected to the side wall of the limiting block 27, and the other end of the spring is fixedly connected to the inner side wall of the chute 20; the limiting block 27 is located between the protruding block 28 and the spring 22, and the protruding block 28 and the limiting block 27 limit the moving range of the second sliding block 21 together so as to prevent the second sliding block 21 from completely sliding out of the sliding groove 20; the brush bar 23 is fixedly connected to one end of the second slider 21, which is not connected with the limiting block 27, a brush 24 is fixedly arranged on the side wall opposite to the rubber plate 15, and the brush 24 is in friction contact with the rubber plate 15; the overflow ring 25 is fixedly arranged on the inner side wall of the motor end cover 2, and can block cleaned dust and prevent the dust from being brought into the motor by airflow. When the rotor 4 rotates at a high speed, the sliding block 21 slides outwards under the action of centrifugal force, and applies thrust to the brush rod 23 and drives the brush 24 to separate from the rubber plate 15, so that dust adsorbed on the rubber plate 15 can be prevented from being cleaned by the brush 24, and the condition that the dust is brought into the motor by airflow is prevented; when the rotation speed of the rotor 4 is reduced, the centrifugal force is reduced, the spring 22 is contracted, the sliding block 21 is subjected to the pulling force exerted by the spring 22 to slide inwards, and the hairbrush 23 is in friction contact with the rubber plate 15, so that dust adsorbed on the rubber plate 15 is cleaned, and meanwhile, the dust is effectively prevented from entering the motor due to the blocking of the overflow ring 25.
As shown in fig. 1 and fig. 2, the heat dissipation mechanisms are symmetrically arranged on the upper and lower side walls of the motor end cover 2 respectively; each heat dissipation mechanism includes: a sliding cavity 8 which is arranged on the upper side wall or the lower side wall of the motor end cover 2, and the sliding cavity 8 is provided with a sliding opening 9; the first sliding block 10 is arranged in the sliding cavity 8 and is in sealed sliding connection with the inner wall of the sliding cavity 8, and an inner cavity formed by the first sliding block 10 and the sliding cavity 8 is provided with gas which is easy to thermally expand; the air inlet 11 penetrates through the side wall of the end part of the motor end cover 2, and the inner side wall of the air inlet is connected with a dustproof cover plate 12 in a sliding manner; a plurality of air holes 13 penetrating through the dust-proof cover plate 12 for dissipating heat and isolating dust in the air; and one end of a connecting rod 14 is fixedly connected to the inner side wall of the dustproof cover plate 12, and the other end of the connecting rod is fixedly connected to the inner side wall of the first sliding block 10, so that the dustproof cover plate 12 and the first sliding block 10 are connected in a linkage manner through the connecting rod 14. When the temperature inside the motor is higher, the gas in the sliding cavity 8 is heated and expanded, thrust is applied to the first sliding block 10, so that the first sliding block 10 slides outwards, the first sliding block 10 further applies thrust to the connecting rod 14, the connecting rod 14 drives the dustproof cover plate 12 to slide, the gas port 11 is completely opened, the air inflow is increased, the air flow exchange efficiency is improved, and the heat dissipation purpose is achieved.
In this embodiment, when the motor is running, the temperature sensor and vibration sensor inside the sensor assembly 3 can monitor the abnormal temperature inside the motor and vibration of the rotor 4, and the operation of the motor is controlled by the external controller according to the monitored data. In the running process of the motor, the rotor 4 rotates to drive the fan blades 7 fixedly connected to the side walls to rotate, so that external low-temperature air is sucked into the motor through the air holes 13 in the side walls of the dustproof cover plate 12, the air flow is increased, and the interior of the motor is effectively cooled.
In addition, the mounting ring 16 fixedly connected to the rotor 4 synchronously rotates along with the rotor 4 to drive the two rotating plates 18 to rotate at a high speed, and the fur layer 19 on the side wall of the two rotating plates 18 continuously rubs and contacts the two rubber plates 15, so that the rubber plates 15 carry static charges due to friction electrification, and after air enters the inner cavity formed by the motor end cover 2 and the motor shell 1 through the air inlet 11, the air firstly contacts one side of the rubber plates 15 close to the air inlet 11, and the rubber plates 15 can absorb most of dust in the air entering the inner cavity due to carrying static charges, thereby realizing a dust removing function and preventing a large amount of dust from entering the inside of the motor; because the air inlet 11 is arranged opposite to the rubber plate 15, and the effective air flow sectional area of the air inlet 11 is smaller than the area of the rubber plate 15, air firstly impacts the front side of the rubber plate 15 close to the air inlet 11, and then diffuses and flows around the rubber plate 15, so that most of dust is adsorbed on the front side of the rubber plate 15 close to the air inlet 11, and the back side and the side of the rubber plate 15 are almost free of dust.
In addition, the rotating plate 18 rotates at a high speed along with the rotor 4, the brush rod 23 drives the second sliding block 21 to slide outwards under the action of centrifugal force, the spring 22 stretches, and the brush 24 on the side wall of the brush rod 23 is separated from the side wall of the rubber plate 15, so that the brush 24 can not clean dust adsorbed on the side wall of the rubber plate 15 in the high-speed rotation process of the rotor 4, and the dust is effectively prevented from being cleaned and entering the interior of the rotor along with air flow; when the rotation speed of the rotor 4 is reduced, the air flow generated by the fan blades 7 is basically stopped, the centrifugal force applied by the brush bar 23 is also reduced, the second sliding block 21 is pulled to slide into the sliding groove 20 under the action of the tension of the spring 22, the brush bar 23 is driven to be in friction contact with the rubber plate 15, and then the rotating plate 18 can clean dust on the side wall of the rubber plate 15 in the gradual stopping process of the rotor 4 along with the brush 24 on the side wall of the brush bar 23 and fall to the inner bottom end of the motor end cover 2, the dust falling port on the side wall of the bottom end of the motor end cover 2 enters the dust collecting box 26 to be collected in a concentrated manner, and after the motor body stops rotating, a small amount of residual dust on the rubber plate 15 can naturally fall along with the disappearance of static charges.
Meanwhile, when the temperature is higher due to serious heating in the motor, gas in the sliding cavity 8 of the side wall of the motor end cover 2 is heated and expanded, thrust is applied to the first sliding block 10 to drive the first sliding block 10 to slide, the connecting rod 14 pushes the dustproof cover plate 12 in the air inlet 11, the air inlet 11 is in a completely opened state, the ventilation area of the air inlet 11 is increased, and the heat dissipation effect is improved.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519699.2A CN113178978B (en) | 2021-05-12 | 2021-05-12 | A protective device for a double-salient permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519699.2A CN113178978B (en) | 2021-05-12 | 2021-05-12 | A protective device for a double-salient permanent magnet synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113178978A CN113178978A (en) | 2021-07-27 |
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| CN114844283B (en) * | 2022-05-11 | 2025-09-05 | 白学锋 | Motor rotor and motor |
| CN116021547B (en) * | 2022-08-17 | 2024-07-12 | 深圳市大族机器人有限公司 | Joint module and cooperative robot |
| CN115133711B (en) * | 2022-08-26 | 2022-11-18 | 江苏中工高端装备研究院有限公司 | Permanent magnet motor with intelligent adjustable heat dissipation function |
| CN115603498B (en) * | 2022-11-14 | 2023-10-03 | 江苏微特利电机股份有限公司 | A built-in elastic heat dissipation device for a motor |
| CN116365776B (en) * | 2023-04-10 | 2024-03-19 | 常州宝龙电机股份有限公司 | Low-voltage high-current inner rotor permanent magnet synchronous servo motor |
| CN119076219B (en) * | 2024-11-08 | 2025-03-18 | 浙江铃本机电有限公司 | Gasoline engine generator |
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| CN108448788A (en) * | 2018-03-06 | 2018-08-24 | 深圳市晓控通信科技有限公司 | It is a kind of for the dedusting of new-energy automobile and the motor of good heat dissipation effect |
| CN108599513A (en) * | 2018-06-21 | 2018-09-28 | 许昌市大力电机制造有限公司 | A kind of permanent magnetic brushless with long service life |
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| DE3441375A1 (en) * | 1984-11-13 | 1986-05-22 | Metallgesellschaft Ag, 6000 Frankfurt | SHAFT PERFORMANCE |
| CN103796463B (en) * | 2012-10-31 | 2016-12-21 | 英业达科技有限公司 | Radiating module, electronic installation and dust collection method thereof |
| CN206698050U (en) * | 2017-04-12 | 2017-12-01 | 嵊州市苒芃电机有限公司 | A kind of high dust protected radiating motor |
| CN207166305U (en) * | 2017-08-15 | 2018-03-30 | 天津创远亿德科技发展有限公司 | A kind of rare earth permanent-magnet synchronization motor |
| JP7353742B2 (en) * | 2018-10-23 | 2023-10-02 | 株式会社Ihi | fluid machinery |
| CN212413018U (en) * | 2020-05-29 | 2021-01-26 | 南京瑞鹏科技有限公司 | A New Type of Rare Earth Permanent Magnet Synchronous Motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108448788A (en) * | 2018-03-06 | 2018-08-24 | 深圳市晓控通信科技有限公司 | It is a kind of for the dedusting of new-energy automobile and the motor of good heat dissipation effect |
| CN108599513A (en) * | 2018-06-21 | 2018-09-28 | 许昌市大力电机制造有限公司 | A kind of permanent magnetic brushless with long service life |
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