CN109301994A - A kind of energy-efficient frequency control motor - Google Patents
A kind of energy-efficient frequency control motor Download PDFInfo
- Publication number
- CN109301994A CN109301994A CN201811373455.2A CN201811373455A CN109301994A CN 109301994 A CN109301994 A CN 109301994A CN 201811373455 A CN201811373455 A CN 201811373455A CN 109301994 A CN109301994 A CN 109301994A
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- China
- Prior art keywords
- frequency control
- control motor
- main body
- motor main
- energy
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Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of energy-efficient frequency control motors, including frequency control motor main body, the left end of the frequency control motor main body is equipped with the first drive shaft, the right side of frequency control motor main body is equipped with the second drive shaft, bearing is installed on second drive shaft, the outer ring of bearing is fixedly connected with the inner wall of annulus, when frequency control motor main body runs at high speed, the centrifugation that sliding bar and block are subject to becomes larger, spring elongation, block and stopper contact, clamping apparatus is rotated by stopper and ring belt movable vane piece, blade makes air flow through the surface of frequency control motor main body, when frequency control motor main body low-speed running, block and stopper do not contact, the power being lost when reducing the low-speed running of blade, improve the energy-saving efficiency of frequency control motor main body；Silica gel absorbs the moisture in air, and moisture is avoided to bring interference to the normal work of motor, reduces the power consumption of frequency control motor main body.
Description
Technical field
The present invention relates to field of electromechanical technology, specially a kind of energy-efficient frequency control motor.
Background technique
Frequency control motor generates driving torque, and as electrical appliance or the power source of various machinery, frequency control motor is high
A large amount of heat can be generated when speed operating, heat is not to be released in time, and motor can be made to burn now more installation radiator fan coolings, but
When frequency control motor low-speed running, cooling fin on frequency control motor can meet demand, radiator fan increases motor
Power consumption；Frequency control motor is not fully sealed position, in the long-term use, can accumulate moisture inside plastic packaging motor, this
A little moistures can bring interference to the normal work of motor, increase motor power consumption.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of energy-efficient frequency control motor,
When frequency control motor main body runs at high speed, the centrifugation that sliding bar and block are subject to becomes larger, spring elongation, block and stopper
Contact, clamping apparatus are rotated by stopper and ring belt movable vane piece, and blade makes air flow through frequency control motor main body
Surface, when frequency control motor main body low-speed running, block and stopper are not contacted, loss when reducing the low-speed running of blade
Power, improve frequency control motor main body energy-saving efficiency；Silica gel absorbs the moisture in air, avoids moisture to electricity
The normal work of machine brings interference, reduces the power consumption of frequency control motor main body, can effectively solve the problems in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of energy-efficient frequency control motor, including become
The left end of frequency modulation speed motor main body, the frequency control motor main body is equipped with the first drive shaft, frequency control motor main body
Right side is equipped with the second drive shaft, is equipped with bearing on the second drive shaft, and the outer ring of bearing is fixedly connected with the inner wall of annulus,
The lateral surface of annulus is angularly fixed with blade around its axis, and the side of the second drive shaft is fixed with clamping apparatus, clamping dress
Setting in the right side of bearing, the right side of annulus is fixed, and there are two stoppers.
The rear and front end of frequency control motor main body right side is symmetrically fixed with two collateral baffles, two collateral baffles
Right side is respectively and fixedly provided with transverse screw, the right end of two transverse screws be each passed through the perforation on two collateral plates and with nut spiral shell
Line connection, two collateral plates front and rear sides with permeable net cover outside left end respectively, frequency control motor main body lateral surface
The gas outlet of left end is connected to the air inlet of air pump by conduit, and the gas outlet of air pump and the air inlet of air washer pass through conduit
Connection, the gas outlet of air washer are connected to the air inlet of frequency control motor main body lateral surface right end by conduit, air pump
Input terminal is electrically connected with the output end of external control switch.
As a preferred technical solution of the present invention, the clamping apparatus includes blank pipe, the lower end of blank pipe and frequency conversion tune
The second drive shaft on the right side of speed motor main body is fixedly connected, and the side of blank pipe inner wall and sliding bar is slidably connected, on sliding bar
Vertical limit slit is offered, the position of the corresponding limit slit in blank pipe side upper end is equipped with positioning screw, the inside of blank pipe
Equipped with spring, the upper and lower ends of spring are fixedly connected with the lower end inside the lower end of sliding bar and blank pipe respectively.
As a preferred technical solution of the present invention, the upper end of the sliding bar offers external screw thread, sliding bar it is upper
The screw hole of end and block lower end is threadedly coupled.
As a preferred technical solution of the present invention, the lower end of the blank pipe offers venthole, venthole and blank pipe
Inner cavity connection.
As a preferred technical solution of the present invention, the quantity of the clamping apparatus two, two clamping apparatus are becoming
The two sides up and down of the second drive shaft are symmetrical arranged on the right side of frequency modulation speed motor main body.
As a preferred technical solution of the present invention, the second drive shaft on the right side of the frequency control motor main body and
The left end of screw rod is coaxially fixed, and fit arrangement is equipped on screw rod, and the right end of screw rod is connected with nut thread.
As a preferred technical solution of the present invention, the fit arrangement includes clump weight, the clamping circular hole of clump weight
It is connected with screw slide, the left side of clump weight is fixed there are two clamping block, the on the right side of clamping block and frequency control motor main body
Clamping groove clamping on two drive shafts.
As a preferred technical solution of the present invention, the quantity of the blade is six, and six blades are around annulus isogonism
Degree distribution, blade are located at the inside of gas-permeable nets cover.
As a preferred technical solution of the present invention, the air washer includes shell, and the upper end of shell is equipped with
Lid, the inside of shell are equipped with active carbon slab, filter cotton, silica gel.
As a preferred technical solution of the present invention, pass through fixation on the right side of the frequency control motor main body lateral surface
Frame is fixed with arc gas gathering mask, and the diameter of arc gas gathering mask inner wall is gradually reduced from right to left.
Compared with prior art, the beneficial effects of the present invention are: this energy-efficient frequency control motor, when frequency control electricity
When owner's body runs at high speed, the centrifugation that sliding bar and block are subject to becomes larger, spring elongation, block and stopper contact, clamping dress
It sets through stopper and the rotation of ring belt movable vane piece, blade makes air flow through the surface of frequency control motor main body, works as frequency conversion
When speed regulating motor main body low-speed running, block and stopper are not contacted, the power being lost when reducing the low-speed running of blade, are improved
The energy-saving efficiency of frequency control motor main body.
Worker can replace the block of different weight according to demand or adjust the coincidence length of block and sliding bar, adjust
The relationship of blade starting rotation and the second drive shaft of frequency control motor main body revolving speed is adjusted, so that blade is to frequency control electricity
The good heat dissipation effect of owner's body, the limit slit clamping on one end and sliding bar of positioning screw prevent sliding bar and blank pipe de-
From improving the safety of clamping apparatus.
Air pump is powered on so that the air of frequency control motor body interior flows back into frequency conversion after air washer purifies
In speed regulating motor main body, active carbon slab absorbs the organic steam in air, and filter cotton crosses dust in air filtering, silica gel moisture absorption
Agent absorbs the moisture in air, and moisture is avoided to bring interference to the normal work of motor, reduces the function of frequency control motor main body
Consumption.
Fit arrangement reduces the fluctuation of speed of frequency control motor main body, can play the role of accumulation of energy, improves energy storage effect
Rate fit arrangement can reduce the negative torque of pumping unit, while can also reduce load impacting, and improve frequency control motor main body is
System efficiency, reduces energy consumption, runs frequency control motor Soil stability.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the present invention；
Fig. 2 is fit arrangement structural schematic diagram of the present invention；
Fig. 3 is clamping apparatus structural schematic diagram of the present invention；
Fig. 4 is air washer structural schematic diagram of the present invention；
Fig. 5 is structure enlargement diagram at A of the present invention.
In figure: 1 frequency control motor main body, 2 arc gas gathering masks, 3 blades, 4 gas-permeable nets covers, 5 air washers, on 51
Lid, 52 active carbon slabs, 53 filter cottons, 54 silica gels, 55 shells, 6 air pumps, 7 fit arrangements, 71 clump weights, 72 clamping circles
Hole, 73 clamping blocks, 8 clamping apparatus, 81 sliding bars, 82 positioning screws, 83 blank pipes, 84 springs, 9 annulus, 10 blocks, 11 stop
Block, 12 bearings, 13 screw rods, 14 nuts, 15 ventholes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5 is please referred to, the present invention provides a kind of technical solution: a kind of energy-efficient frequency control motor, including frequency conversion
The left end of speed regulating motor main body 1, frequency control motor main body 1 is equipped with the first drive shaft, the right side of frequency control motor main body 1
Equipped with the second drive shaft, bearing 12, the outer ring of bearing 12 and the fixed company of the inner wall of annulus 9 are installed on second drive shaft
It connects, the lateral surface of annulus 9 is angularly fixed with blade 3 around its axis, and the quantity of blade 3 is six, and six blades 3 are around annulus 9
It is angularly distributed, blade 3 is located at the inside of gas-permeable nets cover 4, passes through fixed frame on the right side of 1 lateral surface of frequency control motor main body
It is fixed with arc gas gathering mask 2, the diameter of 2 inner wall of arc gas gathering mask is gradually reduced from right to left, and arc gas gathering mask 2 makes blade 3
The wind of generation is bonded 1 surface of frequency control motor main body, and the side of the second drive shaft is fixed with clamping apparatus 8, clamping apparatus 8
Positioned at the right side of bearing 12, the right side of annulus 9 is fixed, and there are two stoppers 11.
Clamping apparatus 8 includes blank pipe 83, second drive shaft on 1 right side of lower end and frequency control motor main body of blank pipe 83
It is fixedly connected, the side of 83 inner wall of blank pipe and sliding bar 81 is slidably connected, and vertical limit slit is offered on sliding bar 81, empty
The position of the corresponding limit slit in 83 side upper end of pipe is equipped with positioning screw 82, and the inside of blank pipe 83 is equipped with spring 84, spring 84
Upper and lower ends be fixedly connected respectively with the lower end inside the lower end of sliding bar 81 and blank pipe 83, the upper end of sliding bar 81 offers
The screw hole of external screw thread, 10 lower end of upper end and block of sliding bar 81 is threadedly coupled, and the lower end of blank pipe 83 offers venthole 15, is led to
Stomata 15 is connected to the inner cavity of blank pipe 83.
The quantity of clamping apparatus 8 two, two clamping apparatus 8 are in 1 the second drive shaft of right side of frequency control motor main body
Two sides up and down be symmetrical arranged.
The rear and front end of 1 right side of frequency control motor main body is symmetrically fixed with two collateral baffles, two collateral baffles
Right side be respectively and fixedly provided with transverse screw, the right end of two transverse screws is each passed through the perforation on two collateral plates and and nut
It is threadedly coupled, two collateral plates front and rear sides with 4 lateral surface left end of gas-permeable nets cover respectively, outside frequency control motor main body 1
The gas outlet of side left end is connected to the air inlet of air pump 6 by conduit, the gas outlet of air pump 6 and the air inlet of air washer 5
It is connected to by conduit, the air inlet of the 1 lateral surface right end of gas outlet and frequency control motor main body of air washer 5 is connected by conduit
Logical, the input terminal of air pump 6 is electrically connected with the output end of external control switch, sliding when frequency control motor main body 1 runs at high speed
The centrifugation that lever 81 and block 10 are subject to becomes larger, and spring 84 extends, and block 10 and stopper 11 contact, and clamping apparatus 8 passes through resistance
Block 11 and annulus 9 are rotated with movable vane piece 3, and blade 3 makes air flow through the surface of frequency control motor main body 1, when frequency conversion tune
When speed motor 1 low-speed running of main body, block 10 and stopper 11 are not contacted, the power being lost when reducing the low-speed running of blade 3,
Improve the energy-saving efficiency of frequency control motor main body 1.
The coincidence that worker can replace the block 10 or adjusting block 10 and sliding bar 81 of different weight according to demand is long
Degree adjusts the relationship of blade 3 starting rotation and 1 second drive shaft revolving speed of frequency control motor main body, so that blade 3 is right
The good heat dissipation effect of frequency control motor main body 1, the limit slit clamping on one end and sliding bar 81 of positioning screw 82 prevent
Sliding bar 81 and blank pipe 83 are detached from, and improve the safety of clamping apparatus 8.
Air washer 5 includes shell 55, and the upper end of shell 55 is equipped with upper cover 51, and the inside of shell 55 is equipped with active carbon slab
52, filter cotton 53, silica gel 54, air pump 6 is powered on so that the air inside frequency control motor main body 1 is filled through net gas
It is flowed back into frequency control motor main body 1 after setting 5 purifications, active carbon slab 52 absorbs the organic steam in air, filter cotton 53
The dust in air filtering, the moisture in the absorption air of silica gel 54 are crossed, avoids moisture from bringing to the normal work of motor dry
It disturbs, reduces the power consumption of frequency control motor main body 1.
Second drive shaft on 1 right side of frequency control motor main body and the left end of screw rod 13 are coaxially fixed, and are pacified on screw rod 13
Equipped with fit arrangement 7, the right end and nut 14 of screw rod 13 are threadedly coupled, and fit arrangement 7 includes clump weight 71, the card of clump weight 71
It connects circular hole 72 and screw rod 13 is slidably connected, the left side of clump weight 71 is fixed, and there are two clamping block 73, clamping block 73 and frequency conversion tune
Clamping groove clamping on 1 the second drive shaft of right side of speed motor main body, fit arrangement 7 reduce turning for frequency control motor main body 1
Speed fluctuation, can play the role of accumulation of energy, and the negative torque of pumping unit can be reduced by improving energy storage efficiency fit arrangement 7, while also can
Reduce load impacting, improve the system effectiveness of frequency control motor main body 1, reduce energy consumption, stablizes frequency control motor main body 1
Operation.
When in use: frequency control motor main body 1 is powered on, and frequency control motor main body 1 passes through the first drive shaft
Output power, frequency control motor main body 1 drives clamping apparatus 8 to rotate by the second drive shaft, as frequency control motor master
When body 1 runs at high speed, the centrifugation that sliding bar 81 and block 10 are subject to becomes larger, and spring 84 extends, and block 10 and stopper 11 contact,
Clamping apparatus 8 is rotated by stopper 11 and annulus 9 with movable vane piece 3, and blade 3 makes air flow through frequency control motor main body 1
Surface；When frequency control motor 1 low-speed running of main body, spring 84 is shunk, and block 10 and stopper 11 do not contact.
The present invention, when frequency control motor main body 1 runs at high speed, the centrifugation that sliding bar 81 and block 10 are subject to becomes larger,
Spring 84 extends, and block 10 and stopper 11 contact, and clamping apparatus 8 is rotated by stopper 11 and annulus 9 with movable vane piece 3, leaf
Piece 3 makes air flow through the surface of frequency control motor main body 1, when frequency control motor 1 low-speed running of main body, 10 He of block
Stopper 11 does not contact, the power being lost when reducing the low-speed running of blade 3, improves the energy conservation effect of frequency control motor main body 1
Rate.
The coincidence that worker can replace the block 10 or adjusting block 10 and sliding bar 81 of different weight according to demand is long
Degree adjusts the relationship of blade 3 starting rotation and 1 second drive shaft revolving speed of frequency control motor main body, so that blade 3 is right
The good heat dissipation effect of frequency control motor main body 1, the limit slit clamping on one end and sliding bar 81 of positioning screw 82 prevent
Sliding bar 81 and blank pipe 83 are detached from, and improve the safety of clamping apparatus 8.
Air pump 6 is powered on so that the air inside frequency control motor main body 1 flows back into change after the purification of air washer 5
In frequency modulation speed motor main body 1, active carbon slab 52 absorbs the organic steam in air, filter cotton 53 cross dust in air filtering,
Silica gel 54 absorbs the moisture in air, and moisture is avoided to bring interference to the normal work of motor, reduces frequency control electricity
The power consumption of owner's body 1.
Fit arrangement 7 reduces the fluctuation of speed of frequency control motor main body 1, can play the role of accumulation of energy, improves energy storage
Efficiency fit arrangement 7 can reduce the negative torque of pumping unit, while can also reduce load impacting, improve frequency control motor main body 1
System effectiveness, reduce energy consumption, make 1 stable operation of frequency control motor main body.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of energy-efficient frequency control motor, including frequency control motor main body (1), it is characterised in that: the frequency conversion tune
The left end of speed motor main body (1) is equipped with the first drive shaft, and the right side of frequency control motor main body (1) is equipped with the second transmission and turns
Axis is equipped with bearing (12) on the second drive shaft, and the outer ring of bearing (12) is fixedly connected with the inner wall of annulus (9), annulus (9)
Lateral surface be angularly fixed with blade (3) around its axis, the side of the second drive shaft is fixed with clamping apparatus (8), clamping
Device (8) is located at the right side of bearing (12), and the right side of annulus (9) is fixed, and there are two stopper (11)；
The rear and front end of frequency control motor main body (1) right side is symmetrically fixed with two collateral baffles, two collateral baffles
Right side is respectively and fixedly provided with transverse screw, the right end of two transverse screws be each passed through the perforation on two collateral plates and with nut spiral shell
Line connection, two collateral plates front and rear sides with gas-permeable nets cover (4) lateral surface left end respectively, frequency control motor main body (1)
The gas outlet of lateral surface left end is connected to the air inlet of air pump (6) by conduit, the gas outlet of air pump (6) and air washer (5)
Air inlet pass through conduit and be connected to, the gas outlet of air washer (5) and the air inlet of frequency control motor main body (1) lateral surface right end
Mouth is connected to by conduit, and the input terminal of air pump (6) is electrically connected with the output end of external control switch.
2. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the clamping apparatus (8)
Including blank pipe (83), the lower end of blank pipe (83) is fixedly connected with the second drive shaft on the right side of frequency control motor main body (1), empty
The side of pipe (83) inner wall and sliding bar (81) is slidably connected, and vertical limit slit, blank pipe are offered on sliding bar (81)
(83) position of the corresponding limit slit in side upper end is equipped with positioning screw (82), and the inside of blank pipe (83) is equipped with spring (84),
The upper and lower ends of spring (84) are fixedly connected with the lower end of the lower end of sliding bar (81) and blank pipe (83) inside respectively.
3. a kind of energy-efficient frequency control motor according to claim 2, it is characterised in that: the sliding bar (81)
Upper end offers external screw thread, and the upper end of sliding bar (81) and the screw hole of block (10) lower end are threadedly coupled.
4. a kind of energy-efficient frequency control motor according to claim 2, it is characterised in that: under the blank pipe (83)
End offers venthole (15), and venthole (15) is connected to the inner cavity of blank pipe (83).
5. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the clamping apparatus (8)
Quantity two, two clamping apparatus (8) two sides up and down of the second drive shaft on the right side of the frequency control motor main body (1) are symmetrical
Setting.
6. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the frequency control motor
The left end of the second drive shaft and screw rod (13) on the right side of main body (1) is coaxially fixed, and screw rod is equipped with fit arrangement on (13)
(7), the right end of screw rod (13) and nut (14) are threadedly coupled.
7. a kind of energy-efficient frequency control motor according to claim 6, it is characterised in that: the fit arrangement (7)
Including clump weight (71), the clamping circular hole (72) and screw rod (13) of clump weight (71) are slidably connected, the left side of clump weight (71)
Clamping there are two fixed clamping block (73), on the right side of clamping block (73) and frequency control motor main body (1) on the second drive shaft
Slot clamping.
8. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the number of the blade (3)
Amount is six, and six blades (3) are angularly distributed around annulus (9), and blade (3) is located at the inside of gas-permeable nets cover (4).
9. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the air washer (5)
Including shell (55), the upper end of shell (55) is equipped with upper cover (51), and the inside of shell (55) is equipped with active carbon slab (52), filtering
Cotton (53), silica gel (54).
10. a kind of energy-efficient frequency control motor according to claim 1, it is characterised in that: the frequency control electricity
The right side of owner's body (1) lateral surface is fixed with arc gas gathering mask (2) by fixed frame, the diameter of arc gas gathering mask (2) inner wall from
The right side is gradually reduced to a left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373455.2A CN109301994A (en) | 2018-11-19 | 2018-11-19 | A kind of energy-efficient frequency control motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373455.2A CN109301994A (en) | 2018-11-19 | 2018-11-19 | A kind of energy-efficient frequency control motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109301994A true CN109301994A (en) | 2019-02-01 |
Family
ID=65143995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373455.2A Pending CN109301994A (en) | 2018-11-19 | 2018-11-19 | A kind of energy-efficient frequency control motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109301994A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181294A (en) * | 2020-01-13 | 2020-05-19 | 安徽理工大学 | High-voltage permanent magnet frequency conversion all-in-one machine |
| CN111541340A (en) * | 2020-04-27 | 2020-08-14 | 巧力电机有限公司 | Speed regulation type permanent magnet synchronous motor |
| US12021437B2 (en) | 2020-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
-
2018
- 2018-11-19 CN CN201811373455.2A patent/CN109301994A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181294A (en) * | 2020-01-13 | 2020-05-19 | 安徽理工大学 | High-voltage permanent magnet frequency conversion all-in-one machine |
| CN111541340A (en) * | 2020-04-27 | 2020-08-14 | 巧力电机有限公司 | Speed regulation type permanent magnet synchronous motor |
| CN111541340B (en) * | 2020-04-27 | 2021-03-16 | 巧力电机有限公司 | Speed regulation type permanent magnet synchronous motor |
| US12021437B2 (en) | 2020-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
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Application publication date: 20190201 |