CN116613936B - Energy-saving permanent magnet motor - Google Patents
Energy-saving permanent magnet motor Download PDFInfo
- Publication number
- CN116613936B CN116613936B CN202310651168.8A CN202310651168A CN116613936B CN 116613936 B CN116613936 B CN 116613936B CN 202310651168 A CN202310651168 A CN 202310651168A CN 116613936 B CN116613936 B CN 116613936B
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- Prior art keywords
- heat conducting
- fan
- conducting rod
- permanent magnet
- storage cavity
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- 239000007788 liquid Substances 0.000 claims abstract description 120
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 4
- 238000000151 deposition Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 7
- 230000008602 contraction Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
-
- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- 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
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
Abstract
The application relates to the technical field of motors, in particular to an energy-saving permanent magnet motor, which comprises a motor body, a rotating shaft and a permanent magnet rotor, wherein a fan and a fan cover are arranged at the tail end of the motor body; the fan cover is established on the heat conduction pole, one side of fan orientation cover box is provided with the connection box, the connection box is inside to have first liquid chamber of depositing, first liquid intracavity packing has the heat conduction piece, first liquid intracavity packing ration mercury of depositing that forms between heat conduction piece and the inside cavity of connection box, set up the mounting hole of parallel and heat conduction pole axis on heat conduction piece and the connection box, install the cock stem in the sliding in the mounting hole, this technical scheme realizes through the mercury in the connection box that the cock stem is located the mounting hole inside, the fan does not follow the heat conduction pole and rotates, the cock stem is rotatory when protruding in the connection box surface, the fan follows the heat conduction pole, the energy loss when reducing equipment uses.
Description
Technical Field
The application relates to the technical field of motors, in particular to an energy-saving permanent magnet motor.
Background
With the development of power electronics technology, the servo motor is widely applied in various industries, and the working principle of the servo motor is that the received electric signal is converted into angular displacement or angular velocity on a servo motor shaft to be output, so that the servo motor is easy to control, small in size, light in weight, high in output power and torque and convenient to regulate speed, but in recent years, the servo motor is widely applied, the temperature of a bearing can be rapidly increased due to the fact that the motor needs to rotate at a high speed during output, and if the servo motor is used, an encoder of the servo motor is also heated due to heat conduction, so that the bearing and the encoder are damaged. In the related art, in order to achieve the heat dissipation effect, a ventilation hole is formed in a rear cover of a machine body of the motor, and a heat dissipation fan is arranged in the rear cover and is coaxially fixed with a rotating shaft of the motor. When the motor runs, the rotating shaft rotates to drive the cooling fan to rotate so as to form air flow to timely cool the motor.
In a period of time when the motor is just started, the heat is not high, and then the heat dissipation fan can cause energy waste along with the rotating shaft, so that the motor needs to be improved. Chinese patent CN115395730a discloses an energy-saving permanent magnet motor, comprising a motor body, wherein the motor body is rotatably provided with a rotating shaft, and the rotating shaft is sleeved with a rotor; the permanent magnet motor further comprises a fan which is arranged on the motor body in a rotating mode, a transmission shaft which is coaxial with the rotating shaft is fixed at the center of the fan, a circular groove is formed in one end, close to the rotating shaft, of the transmission shaft, a transmission piece which extends into the circular groove is fixed at one end of the rotating shaft, a plurality of sliding grooves are formed in the side wall of the transmission piece, sliding blocks are arranged in the sliding grooves in a sliding mode, and the inner ends of the sliding blocks are connected with the bottoms of the sliding grooves through elastic pieces.
The device detects the rotating speed of the rotor through the sensor matched with centrifugal force, and the fan is started again when the rotating speed reaches a certain time, but the device needs electronic elements such as the sensor, and the like, and the time that the rotating speed of the motor reaches the rotating speed is very fast, so that the energy saving is small.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an energy-efficient permanent magnet motor that addresses the problems of the prior art.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the energy-saving permanent magnet motor comprises a motor body, a rotating shaft and a permanent magnet rotor, wherein a fan and a fan cover are arranged at the tail end of the motor body, the fan and the rotating shaft are coaxially arranged, a heat conducting rod is coaxially connected to the rotating shaft and extends into the rotating shaft, and a sleeve box is coaxially arranged at one end of the heat conducting rod; the fan is sleeved on the heat conducting rod, a connecting box is arranged on one side, facing the sleeve box, of the fan, a first liquid storage cavity is formed in the connecting box, a heat conducting block is filled in the first liquid storage cavity, quantitative mercury is filled in the first liquid storage cavity, mounting holes parallel to the axis of the heat conducting rod are formed in the heat conducting block and the connecting box, a plug is slidably mounted in the mounting holes, and the plug plugs the first liquid storage cavity; when the plug is positioned in the mounting hole, the fan does not rotate along with the heat conducting rod, and when the plug protrudes out of the surface of the connecting box, the plug is connected with the connecting box, and the fan rotates along with the heat conducting rod.
Preferably, the heat conducting rod is made of a heat conducting material, a jack is arranged on the rotating shaft, the heat conducting rod is inserted into the jack and extends to the inside of the permanent magnet rotor, limiting strips extending along the axis are arranged on two sides of the sleeve box, and the limiting strips are inserted into limiting grooves formed on two sides of the jack.
Preferably, a ring groove is formed in one side, facing the connecting box, of the sleeve box, the ring groove surrounds the axis of the sleeve box, the ring groove is positioned on the moving path of the mounting hole and the plug, a baffle is arranged in the ring groove, and the baffle is attached to the periphery of the plug to drive the fan to rotate along with the heat conducting rod; the width of the ring groove is larger than the outer diameter of the plug.
Preferably, a first limiting ring and a second limiting ring are coaxially arranged at one end of the heat conducting rod, the fan and the connecting box are positioned between the first limiting ring and the second limiting ring, a second liquid storage cavity is formed between the periphery of the connecting box and the first limiting ring and between the connecting box and the second limiting ring, and liquid is filled in the second liquid storage cavity; the inner wall of the connecting box is provided with a through hole, and the heat conducting fin on the heat conducting block extends into the second liquid storage cavity through the through hole.
Preferably, the periphery side of first liquid storage cavity is provided with first notes liquid mouth, and the top end opening of first notes liquid mouth extends to the periphery side of connecting box, and mercury is poured into to first liquid storage cavity through first notes liquid mouth, and first notes liquid mouth is through shutoff.
Preferably, sealing bearings are respectively arranged on the opposite sides of the first limiting ring and the second limiting ring, and the second liquid storage cavity is formed between the sealing bearings; the sealing bearing is attached to the peripheral side of the connecting box.
Preferably, the sealing bearing is provided with a second liquid injection port, the second liquid injection port extends to penetrate through the sealing bearing along the direction parallel to the axis of the sealing bearing, liquid is injected into the second liquid storage cavity through the second liquid injection port, and the second liquid injection port is plugged through a plugging plug.
Preferably, a plurality of balls are arranged in one side, opposite to the first limiting ring and the second limiting ring, of the first limiting ring, the surfaces of the balls are attached to the sleeve box and the heat conducting rod, and the balls are distributed at equal intervals around the axis of the heat conducting rod.
Preferably, the fan cover is provided with a heat insulation baffle, the heat insulation baffle is positioned between the permanent magnet rotor and the connection box in the fan, the heat insulation baffle is provided with a plurality of air vents, the heat insulation baffle is provided with through holes, the axes of the through holes and the axes of the heat conducting rods are in the same straight line, and the heat conducting rods are inserted in the through holes.
Compared with the prior art, the application has the beneficial effects that:
according to the application, when the temperature of the heat conducting rod is lower, the plug in the mounting hole is kept in the mounting hole, the connecting box is not connected with the sleeve box at one end of the heat conducting rod, the fan is sleeved on the heat conducting rod to keep the axis position but not rotate along with the heat conducting rod, so that energy loss caused by driving the fan to rotate is reduced, when the motor works for a period of time, mercury in the first liquid storage cavity expands with heat and contracts with cold to push the plug outwards to protrude out of the surface of the connecting box, the connecting box is connected with the sleeve box of the heat conducting rod through the plug, the fan rotates along with the heat conducting rod to dissipate heat in the motor body, mercury in the connecting box can perform physical reaction on heat of the motor body absorbed by the heat conducting rod, so that the sleeve box is connected with the connecting box through the plug of a mechanical structure, and the transmission connection of the fan and the heat conducting rod is automatically disconnected after the motor body is cooled, so that participation of an electrical element, a sensor and the like is not needed, and the energy loss when the motor is used is reduced, and the production cost is reduced.
And secondly, the heat generated when the motor body works is absorbed by the heat conducting rod and the liquid in the second liquid storage cavity, so that the starting time of the fan is reduced, and the energy consumption when the motor body works is reduced.
Thirdly, according to the application, through the balls arranged on the first limiting ring and the second limiting ring, the sealing bearing and the liquid in the second liquid storage cavity, the influence of friction heat generation on mercury in the first liquid storage cavity is reduced as much as possible, the starting time of the fan is reduced, and the energy consumption of the motor body during operation is reduced.
Drawings
FIG. 1 is a perspective view of an energy efficient permanent magnet motor;
FIG. 2 is a top view of an energy efficient permanent magnet motor;
FIG. 3 is a cross-sectional view of the energy-efficient permanent magnet motor in a first operating state taken along the direction A-A of FIG. 2;
FIG. 4 is an enlarged view of a portion at B of FIG. 3;
FIG. 5 is a cross-sectional view of the energy-efficient permanent magnet motor in a second operating condition taken along the direction A-A of FIG. 2;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
fig. 7 is an exploded perspective view of an energy-saving permanent magnet motor
FIG. 8 is a perspective exploded view of a permanent magnet motor of the energy saving type;
FIG. 9 is a partial enlarged view at D of FIG. 8;
fig. 10 is a perspective view of a heat conducting rod of an energy-saving permanent magnet motor.
The reference numerals in the figures are: 1. a motor body; 11. a rotating shaft; 111. a jack; 112. a limit groove; 12. a permanent magnet rotor; 2. a fan; 21. a connection box; 211. a first liquid storage cavity; 212. a through port; 213. a first liquid injection port; 22. a heat conduction block; 221. a mounting hole; 222. a plug; 223. a heat conductive sheet; 3. a fan housing; 31. a thermal shield; 311. a through hole; 4. a heat conduction rod; 41. a sleeve; 411. a ring groove; 412. a baffle; 42. a limit bar; 43. a first stop collar; 44. a second limiting ring; 441. a ball; 45. a second liquid storage cavity; 451. sealing the bearing; 452. and a second liquid injection port.
Detailed Description
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
Referring to fig. 1 to 10:
the energy-saving permanent magnet motor comprises a motor body 1, a rotating shaft 11 and a permanent magnet rotor 12, wherein a fan 2 and a fan cover 3 are arranged at the tail end of the motor body 1, the fan 2 and the rotating shaft 11 are coaxially arranged, a heat conducting rod 4 is coaxially connected to the rotating shaft 11, the heat conducting rod 4 extends into the rotating shaft 11, and a sleeve box 41 is coaxially arranged at one end of the heat conducting rod 4; the fan 2 is sleeved on the heat conducting rod 4, a connecting box 21 is arranged on one side, facing the sleeve 41, of the fan 2, a first liquid storage cavity 211 is formed in the connecting box 21, a heat conducting block 22 is filled in the first liquid storage cavity 211, quantitative mercury is filled in the first liquid storage cavity 211, mounting holes 221 parallel to the axis of the heat conducting rod 4 are formed in the heat conducting block 22 and the connecting box 21, a plug 222 is slidably mounted in the mounting holes 221, and the plug 222 seals the first liquid storage cavity 211; when the plug 222 is positioned in the mounting hole 221, the fan 2 does not rotate along with the heat conducting rod 4, and when the plug 222 protrudes from the surface of the connection box 21, the plug 222 is connected with the box 41, and the fan 2 rotates along with the heat conducting rod 4.
The energy-saving permanent magnet motor comprises a common motor body 1, a rotating shaft 11 and a permanent magnet rotor 12, wherein a fan 2 at the tail end of the motor body 1 can rotate to blow heat generated by the operation of the permanent magnet rotor 12 out of a fan housing 3, the fan housing 3 protects the fan 2, a corresponding vent is arranged on the fan housing 3, the fan 2 in the embodiment is sleeved on a heat conducting rod 4, the heat conducting rod 4 is inserted on the rotating shaft 11 of the motor body 1 and extends to the interior of the permanent magnet rotor 12, when the motor is started, the heat generated by the relative rotation of the rotating shaft 11 and the permanent magnet rotor 12 is conducted to the heat conducting rod 4, the heat conducting rod 4 absorbs the heat of the permanent magnet rotor 12 and can reduce the temperature of the permanent magnet rotor 12 to a certain extent, the heat conducting rod 4 rotates along with the rotating shaft 11, and at the moment, the motor is started just, the heat generated between the rotating shaft 11 and the permanent magnet rotor 12 is less, at this time, a certain amount of mercury is stored in the first liquid storage cavity 211 in the connection box 21 of the fan 2 in this embodiment, a heat conducting block 22 is further disposed in the first liquid storage cavity 211, the mounting hole 221 is blocked by the plug 222 sliding in the mounting hole 221 of the heat conducting block 22, the first liquid storage cavity 211 is kept airtight, the mercury has the property of expanding with heat and contracting with cold, when the temperature of the heat conducting rod 4 is low, the plug 222 in the mounting hole 221 is kept inside the mounting hole 221, the connection box 21 is not connected with the sleeve 41 at one end of the heat conducting rod 4, the fan 2 is sleeved on the heat conducting rod 4 to keep the axis position but not rotate along with the heat conducting rod 4, thereby reducing energy loss caused by driving the fan 2 to rotate, when the motor works for a period of time, the temperature in the motor body 1 rises, at this time, the heat conducting rod 4 transfers heat between the rotating shaft 11 and the permanent magnet rotor 12 to the heat conducting block 22 in the first liquid storage cavity 211, the heat conducting block 22 heats mercury in the first liquid storage cavity 211, the hydraulic pressure in the first liquid storage cavity 211 is increased by the expansion caused by the heat and the contraction caused by the cold of the mercury, and the plug 222 in the mounting hole 221 of the heat conducting block 22 is pushed outwards until the plug 222 protrudes out of the surface of the connecting box 21, at the moment, the connecting box 21 is connected with the sleeve 41 of the heat conducting rod 4 through the plug 222, the fan 2 follows the rotation of the heat conducting rod 4 to dissipate heat in the motor body 1, after the motor body 1 stops working, the heat in the motor body 1 is gradually dissipated, the rotating shaft 11 of the embodiment can drive the heat conducting rod 4 which is coaxially arranged to rotate, the heat conducting rod 4 and the fan 2 can be connected through the sleeve 41 and the connecting box 21, mercury in the connecting box 21 can be connected with the sleeve 41 and the connecting box 21 through the heat of the motor body 1 absorbed by the heat conducting rod 4 through the plug 222 of a mechanical structure, and the transmission connection of the fan 2 and the heat conducting rod 4 is automatically disconnected after the motor body 1 is cooled, therefore the participation of an electric appliance element, a sensor and the like is not needed, the production cost is reduced, and the energy loss during the use of equipment is reduced.
In order to achieve the purpose that the heat conducting rod 4 can transfer heat in the motor body 1 and rotate along with the rotating shaft 11, the following characteristics are specifically set:
the heat conducting rod 4 is made of a heat conducting material, the rotary shaft 11 is provided with an inserting hole 111, the heat conducting rod 4 is inserted into the inserting hole 111 and extends to the inside of the permanent magnet rotor 12, two sides of the sleeve box 41 are provided with limiting strips 42 extending along the axis, and the limiting strips 42 are inserted into limiting grooves 112 arranged at two sides of the inserting hole 111.
The heat conducting rod 4 in this embodiment is inserted into the insertion hole 111 of the rotating shaft 11, so that the heat conducting rod 4 can extend to the inside of the rotating shaft 11 and the permanent magnet rotor 12, the heat conducting rod 4 is made of a heat conducting material, heat generated in the rotating shaft 11 and the permanent magnet rotor 12 can be conducted, and the limit strips 42 on two sides of the sleeve 41 are inserted into the limit grooves 112 on two sides of the insertion hole 111, so that the heat conducting rod 4 can be driven to synchronously rotate when the rotating shaft 11 rotates.
In order to achieve the purpose that the connection box 21 and the sleeve 41 can be connected in a driving way when the plug 222 protrudes from the surface of the connection box 21, the following features are specifically provided:
a ring groove 411 is arranged on one side of the sleeve box 41 facing the connection box 21, the ring groove 411 surrounds the axis of the sleeve box 41, the ring groove 411 is positioned on the moving path of the mounting hole 221 and the plug 222, a baffle piece 412 is arranged in the ring groove 411, and the baffle piece 412 is attached to the peripheral side of the plug 222 to drive the fan 2 to rotate along with the heat conducting rod 4; the width of the annular groove 411 is greater than the outer diameter of the plug 222.
In this embodiment, the sleeve 41 of the heat conducting rod 4 follows the heat conducting rod 4 to rotate, the sleeve 41 is provided with a ring slot 411 towards one side of the connecting box 21, the ring slot 411 ensures that the mounting hole 221 of the connecting box 21 is always aligned with the ring slot 411 when the sleeve 222 is positioned in the mounting hole 221, the connecting box 21 and the sleeve 41 are not connected, the connecting box 21 and the sleeve 41 relatively move, when the mercury in the first liquid storage cavity 211 senses the temperature of the heat conducting rod 4 transmitted to the heat conducting block 22, the mercury ejects the sleeve 222 from the mounting hole 221, at this time, the sleeve 222 protrudes out of the surface of the connecting box 21 and enters the ring slot 411 of the sleeve 41, when the sleeve 41 rotates, after the baffle 412 in the ring slot 411 is attached to the peripheral side of the sleeve 222, the sleeve 222 is pushed to drive the connecting box 21 and the fan 2 to rotate along with the heat conducting rod 4, the width of the ring slot 411 is larger than the outer diameter of the sleeve 222, the sleeve 222 can enter the ring slot 411 to contact with the baffle 412, the baffle 412 is ensured, the rotation of the fan 2 in this embodiment is realized by the mechanical structure to drive the connecting electric appliance 11, and other elements are prevented from participating in rotation of the rotating shaft.
In order to reduce the energy loss of the fan 2 rotation to the motor body 1 as much as possible, the following features are specifically provided:
a first limiting ring 43 and a second limiting ring 44 are coaxially arranged at one end of the heat conducting rod 4, the fan 2 and the connecting box 21 are positioned between the first limiting ring 43 and the second limiting ring 44, a second liquid storage cavity 45 is formed between the periphery of the connecting box 21 and the first limiting ring 43 and the second limiting ring 44, and liquid is filled in the second liquid storage cavity 45; the inner wall of the connection box 21 is provided with a through hole 212, and the heat conducting sheet 223 on the heat conducting block 22 extends into the second liquid storage cavity 45 through the through hole 212.
In this embodiment, one end of the heat conducting rod 4 limits the fan 2 and the connection box 21 through the first limiting ring 43 and the second limiting ring 44, so as to ensure that the fan 2 and the connection box 21 are stable at the position of the heat conducting rod 4, and further ensure that the relative distance between the connection box 21 and the sleeve box 41 is stable, the plug 222 in the connection box 21 protrudes out of the surface of the connection box 21 and can be in contact with the baffle 412 of the sleeve box 41 to realize the rotation of the fan 2, the second liquid storage cavity 45 sealed after the first limiting ring 43 and the second limiting ring 44 are matched with the peripheral side of the connection box 21 is formed, a certain amount of liquid is filled in the second liquid storage cavity 45, the liquid can be water, the lubricating oil can be used as lubricating oil, the liquid in the second liquid storage cavity 45 can absorb the heat in the motor body 1 transferred by the heat conducting rod 4, the friction force generated when the connection box 21 relatively rotates can also be reduced, the premature starting of the fan 2 due to friction heat generation is prevented from causing the energy dissipation of the motor body 1, when the temperature of the liquid in the second liquid storage cavity 45 is increased, the liquid in the heat conducting block 22 is filled into the heat conducting block 22 and the heat conducting block 22 is fully heated up to the second liquid storage cavity 22 through the heat conducting block 22, and the heat conducting block 22 is heated up to the heat in the second heat conducting cavity 22.
In order to achieve the purpose of adding a proper amount of mercury into the first liquid storage cavity 211, the following features are specifically provided:
the first liquid storage cavity 211 is provided with a first liquid injection port 213 on the peripheral side, the top end opening of the first liquid injection port 213 extends to the peripheral side of the connection box 21, mercury is injected into the first liquid storage cavity 211 through the first liquid injection port 213, and the first liquid injection port 213 is plugged through a plug.
Be provided with first notes liquid mouth 213 on the connection box 21 in this embodiment, first notes liquid mouth 213 is located the week side of connection box 21, the staff can pour into quantitative mercury into first liquid chamber 211 through first notes liquid mouth 213 when the installation motor, guarantee that the mercury content in the first liquid chamber 211 can make the cock stem 222 be located inside the mounting hole 221, when the temperature of heat conduction piece 22 risees, the volume increase of mercury in the first liquid chamber 211 promote the cock stem 222 can, first notes liquid mouth 213 can be plugged by the shutoff stopper after the interpolation finishes, guarantee that the mercury in the first liquid chamber 211 can not flow and cause the influence to the human body.
In order to prevent the heat generated by the contact friction between the heat conduction rod 4 and the connection box 21 from affecting the start time of the fan 2, the following features are specifically provided:
the opposite sides of the first limiting ring 43 and the second limiting ring 44 are respectively provided with a sealing bearing 451, and a second liquid storage cavity 45 is formed between the sealing bearings 451; the seal bearing 451 is attached to the peripheral side of the connection box 21.
In this embodiment, the opposite sides of the first limiting ring 43 and the second limiting ring 44 are respectively provided with a sealing bearing 451, the peripheral side of the sealing bearing 451 is attached to the connection box 21t to support the connection box 21, so that the axial position of the connection box 21 is ensured to be stable, the plug 222 can directly enter the annular groove 411 of the sleeve box 41 when protruding out of the surface of the connection box 21, when the fan 2 and the heat conducting rod 4 do not synchronously rotate, the sealing bearing 451 can reduce the friction force with the surface of the connection box 21, thereby avoiding the temperature rise of mercury in the heat conducting block 22 and the first liquid storage cavity 211 caused by friction heat generation, preventing the fan 2 from being started prematurely, the sealing bearing 451 is matched with the second liquid storage cavity 45 formed in the connection box 21, and the liquid filled in the second liquid storage cavity 45 can be lubricating oil, so that the rotation of the fan 2 and the heat conducting rod 4 is ensured to be smooth.
In order to solve the problem of how to fill the second liquid storage chamber 45 with liquid, the following features are specifically provided:
the sealed bearing 451 is provided with a second liquid injection port 452, the second liquid injection port 452 extends through the sealed bearing 451 in a direction parallel to the axis of the sealed bearing 451, liquid is injected into the second liquid storage chamber 45 through the second liquid injection port 452, and the second liquid injection port 452 is plugged by a plug.
The sealed bearing 451 in this embodiment is provided with a second liquid injection port 452, and a worker can fill the second liquid storage chamber 45 between the sealed bearings 451 with liquid through the second liquid injection port 452, and then seal the second liquid injection port 452 by sealing to prevent leakage of liquid in the second liquid storage chamber 45.
In order to prevent the heat generated by the contact friction between the first stop collar 43 and the second stop collar 44 and the connection box 21 from affecting the start time of the fan 2, the following features are specifically provided:
the opposite sides of the first limiting ring 43 and the second limiting ring 44 are internally provided with a plurality of balls 441, the surfaces of the balls 441 are attached to the sleeve 41 and the heat conducting rod 4, and the balls 441 are distributed at equal intervals around the axis of the heat conducting rod 4.
In this embodiment, the fan 2 and the connection box 21 are located between the first limiting ring 43 and the second limiting ring 44 of the heat conducting rod 4, when the motor body 1 is just started, the rotating shaft 11 drives the heat conducting rod 4 to rotate, at this time, the fan 2 is not in transmission connection with the heat conducting rod 4, because friction is generated between the first limiting ring 43 and the second limiting ring 44 which limit the fan 2 and the connection box 21 and one side of the fan 2 and the connection box 21, which easily causes the heat conducting block 22 to heat, so that mercury in the first liquid storage cavity 211 expands to the top of the plug 222, the starting time of the fan 2 is accelerated, so that the energy waste of the motor body 1 is increased, in this embodiment, a plurality of balls 441 are arranged on the opposite side of the first limiting ring 43 and the second limiting ring 44, and the ball 441 are in contact with one side of the fan 2 and the connection box 21 to limit the fan 2, so that the fan 2 and the connection box 21 are located on the axis of the heat conducting rod 4 is stable, and when the heat conducting rod 4 rotates relative to the fan 2, the existence of the balls 441 converts the first limiting ring 43 and the second limiting ring 44 into sliding friction with the fan 2 and the outer wall 21, so that the friction of the fan 2 is also influenced by the sliding friction of the fan 2 and the rolling fluid is reduced, and the rolling friction of the friction is guaranteed, and the rolling fluid is caused by the relative friction of the fan 2 and the friction is 4.
In order to stabilize the axial position of the heat conducting rod 4, the following features are specifically provided:
the fan housing 3 is provided with a heat insulation baffle plate 31, the heat insulation baffle plate 31 is positioned between the permanent magnet rotor 12 and the connection box 21 in the fan 2, the heat insulation baffle plate 31 is provided with a plurality of air vents, the heat insulation baffle plate 31 is provided with a through hole 311, the axis of the through hole 311 and the axis of the heat conducting rod 4 are in the same straight line, and the heat conducting rod 4 is inserted in the through hole 311.
In this embodiment, the fan cover 3 is located outside the fan 2, so that the fan 2 discharges heat in the motor body 1 through the vent hole on the fan cover 3, the fan cover 3 is provided with the heat insulation baffle 31, a certain number of vents are arranged on the heat insulation baffle 31, the heat insulation baffle 31 ensures that the heat in the motor body 1 can not directly heat the connection box 21, the heat insulation baffle 31 is provided with the through hole 311 to limit the axis position of the heat conducting rod 4, and the stability of the fan 2 when the heat conducting rod 4 drives the fan 2 to rotate is ensured.
Working principle: when the motor is started, heat generated by relative rotation of the rotating shaft 11 and the permanent magnet rotor 12 is conducted to the heat conducting rod 4, the heat conducting rod 4 absorbs heat of the permanent magnet rotor 12 and is transferred to the heat conducting block 22 of the fan 2, the heat conducting block 22 is heated by rising of temperature to mercury in the first liquid storage cavity 211, the mercury has the property of thermal expansion and contraction, when the temperature of the heat conducting rod 4 is low, a plug 222 in a mercury volume retaining mounting hole 221 in the first liquid storage cavity 211 is kept inside the mounting hole 221, the connecting box 21 is not connected with a sleeve 41 at one end of the heat conducting rod 4, the fan 2 is sleeved on the heat conducting rod 4 to keep the axis position but does not rotate along with the heat conducting rod 4, after the motor works for a period of time, the heat conducting block 22 heats the mercury in the first liquid storage cavity 211 to increase hydraulic pressure in the first liquid storage cavity 211 by thermal expansion and contraction, the plug 222 in the mounting hole 221 of the heat conducting block 22 is pushed outwards until the plug 222 protrudes out of the surface of the connecting box 21, at the moment, the connecting box 21 is connected with the sleeve 41 of the heat conducting rod 4 through the plug 222, and the heat conducting rod 2 dissipates heat inside the motor body 1.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (7)
1. The energy-saving permanent magnet motor comprises a motor body (1), a rotating shaft (11) and a permanent magnet rotor (12), wherein a fan (2) and a fan cover (3) are arranged at the tail end of the motor body (1), and the fan (2) and the rotating shaft (11) are coaxially arranged;
the fan (2) is sleeved on the heat conducting rod (4), a connecting box (21) is arranged on one side, facing the sleeve box (41), of the fan (2), a first liquid storage cavity (211) is formed in the connecting box (21), a heat conducting block (22) is filled in the first liquid storage cavity (211), quantitative mercury is filled in the first liquid storage cavity (211), mounting holes (221) parallel to the axis of the heat conducting rod (4) are formed in the heat conducting block (22) and the connecting box (21), plug columns (222) are slidably mounted in the mounting holes (221), and the plug columns (222) seal the first liquid storage cavity (211);
when the plug (222) is positioned in the mounting hole (221), the fan (2) does not rotate along with the heat conducting rod (4), and when the plug (222) protrudes out of the surface of the connecting box (21), the plug (222) is connected with the sleeve box (41), and the fan (2) rotates along with the heat conducting rod (4);
one side of the sleeve box (41) facing the connecting box (21) is provided with a ring groove (411), the ring groove (411) surrounds the axis of the sleeve box (41), the ring groove (411) is positioned on the moving path of the mounting hole (221) and the plug (222), a baffle (412) is arranged in the ring groove (411), and the baffle (412) is attached to the periphery of the plug (222) to drive the fan (2) to rotate along with the heat conducting rod (4);
the width of the ring groove (411) is larger than the outer diameter of the plug (222);
a first limiting ring (43) and a second limiting ring (44) are coaxially arranged at one end of the heat conducting rod (4), the fan (2) and the connecting box (21) are positioned between the first limiting ring (43) and the second limiting ring (44), a second liquid storage cavity (45) is formed between the periphery of the connecting box (21) and the first limiting ring (43) and the second limiting ring (44), and liquid is filled in the second liquid storage cavity (45);
the inner wall of the connecting box (21) is provided with a through hole (212), and the heat conducting sheet (223) on the heat conducting block (22) extends into the second liquid storage cavity (45) through the through hole (212).
2. An energy-saving permanent magnet motor according to claim 1, wherein the heat conducting rod (4) is made of a heat conducting material, a jack (111) is arranged on the rotating shaft (11), the heat conducting rod (4) is inserted into the jack (111) and extends to the inside of the permanent magnet rotor (12), limit strips (42) extending along the axis are arranged on two sides of the sleeve (41), and the limit strips (42) are inserted into limit grooves (112) arranged on two sides of the jack (111).
3. The energy-saving permanent magnet motor according to claim 1, wherein a first liquid injection port (213) is formed in the peripheral side of the first liquid storage cavity (211), a top end opening of the first liquid injection port (213) extends to the peripheral side of the connection box (21), mercury is injected into the first liquid storage cavity (211) through the first liquid injection port (213), and the first liquid injection port (213) is plugged through a plugging plug.
4. An energy-saving permanent magnet motor according to claim 3, wherein sealing bearings (451) are respectively arranged on opposite sides of the first limiting ring (43) and the second limiting ring (44), and the second liquid storage cavity (45) is formed between the sealing bearings (451);
the seal bearing (451) is attached to the peripheral side of the connection box (21).
5. The energy-saving permanent magnet motor according to claim 4, wherein a second liquid injection port (452) is arranged on the sealed bearing (451), the second liquid injection port (452) extends through the sealed bearing (451) along a direction parallel to the axis of the sealed bearing (451), liquid is injected into the second liquid storage cavity (45) through the second liquid injection port (452), and the second liquid injection port (452) is plugged through a plugging plug.
6. The energy-saving permanent magnet motor according to claim 5, wherein a plurality of balls (441) are arranged on the opposite sides of the first limiting ring (43) and the second limiting ring (44), the surfaces of the balls (441) are attached to the sleeve (41) and the heat conducting rod (4), and the balls (441) are distributed at equal intervals around the axis of the heat conducting rod (4).
7. An energy-saving permanent magnet motor according to claim 1, characterized in that the fan housing (3) is provided with a heat insulation baffle (31), the heat insulation baffle (31) is positioned between the permanent magnet rotor (12) and the connection box (21) in the fan (2), the heat insulation baffle (31) is provided with a plurality of air vents, the heat insulation baffle (31) is provided with a through hole (311), the axis of the through hole (311) and the axis of the heat conducting rod (4) are in the same straight line, and the heat conducting rod (4) is inserted in the through hole (311).
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| CN117650669B (en) * | 2024-01-30 | 2024-04-05 | 福建怡和电子有限公司 | Permanent magnet direct current motor control device |
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| JPH08340654A (en) * | 1995-06-13 | 1996-12-24 | Asmo Co Ltd | Cooling structure of motor for automobile |
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