CN114696510B - Brushless motor for fan of clothes dryer - Google Patents
Brushless motor for fan of clothes dryer Download PDFInfo
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- CN114696510B CN114696510B CN202210357751.3A CN202210357751A CN114696510B CN 114696510 B CN114696510 B CN 114696510B CN 202210357751 A CN202210357751 A CN 202210357751A CN 114696510 B CN114696510 B CN 114696510B
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- wall
- end cover
- connecting cylinder
- brushless motor
- cylinder body
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
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- 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
- H02K7/003—Couplings; Details of shafts
Abstract
The invention belongs to the field of clothes dryer fans, and relates to a brushless motor for a clothes dryer fan, which comprises a rear end cover, a front end cover, a stator and a rotating shaft, wherein a rotor core is arranged in the stator, the rotating shaft is arranged on the rear end cover, the stator is connected to the rotating shaft through the rotor core, the brushless motor also comprises a connecting cylinder, a fixed ring plate is arranged on the inner wall of the connecting cylinder, a plurality of pressing springs are arranged on one side, facing the head end of the connecting cylinder, of the fixed ring plate, a connecting ring plate is arranged at the head ends of all the pressing springs, a limiting assembly is arranged at the head end of the connecting cylinder, a locking assembly is arranged on the outer wall of the connecting cylinder, a connecting flange is arranged at the tail end of the front end cover, and the distance between the rear surface of the stator and the inner side wall of the rear end cover is not less than 1cm. The volume of the invention can be flexibly changed, thereby improving the application range and avoiding the phenomenon that the front end cover and the rear end cover are punctured.
Description
Technical Field
The invention relates to the field of clothes dryer fans, in particular to a brushless motor for a clothes dryer fan.
Background
The dryer is a clean household appliance that instantly evaporates and dries moisture in washed laundry by using electric heating. The condition that clothes are difficult to dry is particularly needed for the winter in the north and the return-south in the south.
The whole space of the brushless motor for the fan is small due to the reason of the whole structure of the clothes dryer, so that the size of the brushless motor for the fan is limited, namely, the size of the front end cover and the size of the rear end cover on the brushless motor are compressed, the linear distance between the front end cover and the stator coil of the rear end cover and the linear distance between the front end cover and the stator coil of the brushless motor are reduced, and the phenomenon of breakdown is easy to occur. After the brushless motor for the fan is installed on the clothes dryer, a large gap is found between the upper surface of the front end cover of the brushless motor and other parts, and the breakdown phenomenon can be avoided if the gap can be used for changing the size of the brushless motor for the fan.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a brushless motor for a dryer fan, aiming at solving the problem that the breakdown phenomenon is easy to occur because the linear distance between a front end cover and a stator coil of the brushless motor is reduced as the volumes of the front end cover and a rear end cover are compressed.
The invention provides a brushless motor for a dryer fan, which comprises a rear end cover, a front end cover, a stator and a rotating shaft, wherein a rotor core is arranged in the stator, the rotating shaft is arranged on the rear end cover, the stator is connected on the rotating shaft through the rotor core, the brushless motor also comprises a connecting cylinder, a fixed ring plate is arranged on the inner wall of the connecting cylinder, the inner diameter of the fixed ring plate is larger than the outer diameter of the rear end cover, one side, facing the head end of the connecting cylinder, of the fixed ring plate is provided with a plurality of uniformly distributed abutting springs, the head ends of all the abutting springs are provided with connecting ring plates, the head end of the connecting cylinder is provided with a limiting assembly for preventing the connecting ring plates from moving to the outside of the connecting cylinder, the outer wall of the connecting cylinder is provided with a locking assembly for locking the positions of the connecting ring plates, the tail end of the front end cover is provided with a connecting flange, the connecting cylinder is detachably connected on the outer wall of the rear end cover, the inner wall and the outer wall of the connecting ring plate are respectively in sliding connection with the outer wall of the rear end cover and the inner wall of the connecting cylinder, the front end cover is smaller than the inner wall of the stator, and the inner wall of the connecting cylinder is not smaller than 1cm; the front end cover is connected with a connecting ring plate in the connecting cylinder body, the abutting spring can be compressed to enable the front end cover to have a moving area, namely the brushless motor can change the whole volume, the position of the connecting ring plate can be locked through the locking assembly, the size of the brushless motor can be installed in the minimized state, after the brushless motor is installed, the locking force of the locking assembly is relieved, the front end cover is pushed by the elastic force of the abutting spring, the gap between the front end cover and other parts can be reduced, then the front end cover is locked again through the locking assembly, the front end cover can be far away from a stator, namely, the phenomenon that the front end cover is punctured is avoided, the front end cover can be subjected to position adjustment, therefore, the distance between the rear surface of the stator and the inner side wall of the rear end cover can be increased, and the phenomenon that the rear end cover is punctured can be avoided by directly setting the distance to be not less than 1cm.
In some embodiments, the limiting assembly comprises a rotating ring, a plurality of rotating seats are arranged on the inner wall of the rotating ring, an arc-shaped limiting rod is rotatably mounted on each rotating seat, a protrusion is arranged at the head end of the front part of each arc-shaped limiting rod, a plurality of inner notches for the arc-shaped limiting rods to move are arranged at the head end of the connecting cylinder body, and a first arc surface in guide sliding fit with the back parts of the arc-shaped limiting rods and a second arc surface in guide sliding fit with the protrusions are arranged on the inner wall of each inner notch; the connection ring plate is limited by the protruding inner notch of the arc-shaped limiting rod.
In some embodiments, the limiting assembly further comprises a plurality of bent elastic sheets, one end of each bent elastic sheet is attached to the inner wall of the connecting cylinder body, the bent elastic sheets are located beside the rotating seat, and the other end of each bent elastic sheet is attached to the front part of the arc-shaped limiting rod; the arc-shaped limiting rod can automatically protrude out of the inner notch once the elastic force of the bent elastic sheet is utilized to lose the abutting pressure of the first arc surface.
In some embodiments, the outer wall of the rotating ring is provided with anti-slip lines; the friction between the hand and the rotating ring is improved.
In some embodiments, the locking assembly comprises a locking plug board and a socket set in plug-in fit with the locking plug board, the socket set comprises a plurality of sockets, all the sockets are sequentially arranged on the outer wall of the connecting cylinder body along the axis direction of the rotating shaft, and the outer wall of the connecting ring board is provided with a slot in plug-in fit with the locking plug board; the locking is completed by inserting the locking insertion plate into the corresponding socket and the slot of the connecting ring plate.
In some embodiments, at least two locking assemblies are arranged, and all the locking assemblies are arranged on the outer wall of the connecting cylinder at equal angles; providing stability after the connection ring plate is locked.
In some embodiments, a plurality of first connectors arranged at equal angles are arranged on the inner wall of the tail end of the connecting cylinder, a plurality of second connectors are arranged on the outer wall of the tail end of the rear end cover, and the first connectors and the second connectors are fixedly connected through screws; the connection cylinder body is convenient to assemble and maintain.
In some embodiments, a convex ring is arranged on the inner wall of the rotor core, and a ring groove matched with the convex ring is arranged on the outer wall of the rotating shaft; prevent the rotating shaft and the rotor core from generating displacement at the axial position.
The invention has the beneficial effects that:
firstly, according to the brushless motor for the fan of the clothes dryer, the distance between the rear end cover and the stator is increased to be not less than 1cm, the position of the front end cover can be adjusted after the brushless motor is installed in the clothes dryer, namely, the distance between the front end cover and the stator is increased, and the front end cover and the rear end cover can avoid the occurrence of breakdown phenomenon.
Secondly, the volume of the brushless motor for the dryer fan can be adaptively changed, the brushless motor is not influenced to be installed in the dryer, and gaps between the front end cover and other parts can be reduced to be minimized, namely, the distance between the front end cover and the stator is maximized.
Thirdly, according to the brushless motor for the dryer fan, the arc-shaped limiting rod can be retracted into or protruded out of the inner notch by rotating the rotating ring through the hand, the arc-shaped limiting rod can be used for limiting or releasing the limiting of the connecting ring plate, and the brushless motor is simple in structure and convenient and fast to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a first schematic perspective view of a brushless motor for a dryer fan according to the present invention;
FIG. 2 is a schematic perspective view of a brushless motor for a dryer fan according to a second embodiment of the present invention;
FIG. 3 is a partially broken away view showing a first brushless motor for a dryer fan according to the present invention;
FIG. 4 is a second partially disassembled schematic view of the brushless motor for the dryer blower according to the present invention;
FIG. 5 is a schematic structural view of the connecting cylinder;
FIG. 6 is an enlarged view taken at A in FIG. 5;
fig. 7 is a schematic diagram of the rotor shaft and the stator.
Reference numerals: 1. a rear end cap; 11. a second connector; 2. a front end cover; 21. a connecting flange; 3. connecting the cylinder body; 31. an inner recess; 311. a first arc surface; 312. a second arc surface; 32. a first connector; 4. a stationary ring plate; 5. a connecting ring plate; 51. a slot; 6. pressing the spring; 7. a limiting component; 71. a rotating ring; 72. a rotating seat; 73. an arc-shaped limiting rod; 74. a protrusion; 75. bending the elastic sheet; 8. a locking assembly; 81. locking the plug board; 82. a socket; 9. a stator; 91. a convex ring; 10. a rotating shaft; 101. and a ring groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In this embodiment, as shown in fig. 1 to 7, a brushless motor for a dryer fan comprises a rear end cover 1, a front end cover 2, a stator 9, a rotating shaft 10, a rotor core arranged in the stator 9, the rotating shaft 10 arranged on the rear end cover 1, the stator 9 connected to the rotating shaft 10 through the rotor core, a connecting cylinder 3, a fixed ring plate 4 mounted on the inner wall of the connecting cylinder 3, the inner diameter of the fixed ring plate 4 being larger than the outer diameter of the rear end cover 1, a plurality of evenly distributed pressure springs 6 arranged on one side of the fixed ring plate 4 facing the head end of the connecting cylinder 3, a connecting ring plate 5 mounted on the head end of all the pressure springs 6, a limit component 7 arranged on the head end of the connecting cylinder 3, a locking component 8 arranged on the outer wall of the connecting cylinder 3, a connecting flange 21 arranged on the tail end of the front end cover 2, in order to make the connection barrel 3 be connected stably and the dismantlement convenient with rear end cap 1, consequently be equipped with the first connector 32 that the angle such as a plurality of set up on the inner wall of connecting barrel 3 tail end, be equipped with a plurality of second connector 11 on the outer wall of rear end cap 1 tail end, first connector 32 adopts screw fixed connection with second connector 11, the inner wall and the outer wall of connection crown plate 5 respectively with the outer wall of rear end cap 1 and the inner wall sliding connection who is connected barrel 3, front end housing 2 passes through flange 21 and connection crown plate 5 fixed connection, the internal diameter of front end housing 2 is greater than the external diameter of rear end cap 1, the external diameter of front end housing 2 is less than the internal diameter of connecting barrel 3, the distance between the rear surface of stator 9 and the inside wall of rear end cap 1 is not less than 1cm.
The connecting cylinder body 3 is installed outside the rear end cover 1, a movable space is formed between the connecting cylinder body 3 and the rear end cover 1, the abutting spring 6 is arranged in the movable space, and the connecting ring plate 5 is arranged on the abutting spring 6, so that the connecting ring plate 5 can move in the movable space, and the connecting ring plate 5 has the capability of restoring the initial position, after the front end cover 2 is connected with the connecting ring plate 5, a part of the tail part of the front end cover 2 can be hidden in the movable space, namely, the whole volume of the brushless motor can be changed, the brushless motor utilizes the abutting spring 6 to enable the front end cover 2 to be far away from the stator 9 after being installed, and therefore the phenomenon that the front end cover 2 is punctured can be avoided, and the phenomenon that the rear end cover 1 is punctured can be avoided by directly setting the distance to be not less than 1cm.
Spacing subassembly 7 can avoid the link plate 5 to remove and connect barrel 3 outside, spacing subassembly 7 includes swivel 71, in order to avoid people's hand to take place the phenomenon of skidding when rotating swivel 71, anti-skidding line has been set up on swivel 71's outer wall, be equipped with a plurality of rotation seat 72 on swivel 71's the inner wall, it installs arc gag lever post 73 to rotate on the rotation seat 72, the anterior head end of arc gag lever post 73 is equipped with protruding 74, the head end of connecting barrel 3 is equipped with the interior notch 31 that a plurality of confession arc gag lever post 73 removed, be equipped with first cambered surface 311 and second cambered surface 312 on the inner wall of interior notch 31, as shown in fig. 5 and 6, when anticlockwise rotation swivel 71, the back of arc gag lever post 73 can utilize first cambered surface 311 to carry out the guiding force of the inside shrink of inward notch 31, thereby make arc gag lever post 73 can not support and touch the surface of link plate 5, when clockwise swivel 71, protruding 74 utilizes the guiding fit of second cambered surface 312 can let gag lever post 73 to let the inside notch 31 of protruding gradually, later arc plate 73 just can carry out spacing to link plate 5.
Preferably, the arc-shaped limiting rod 73 on the rotating ring 71 cannot keep the state after protruding out of the inner notch 31, and may accidentally retract into the inner notch 31, so that the limiting of the connecting ring plate 5 is unstable, and therefore a plurality of bent elastic pieces 75 are further arranged, one end of each bent elastic piece 75 is attached to the inner wall of the connecting cylinder 3, each bent elastic piece 75 is located beside the rotating seat 72, and the other end of each bent elastic piece 75 is attached to the front portion of the arc-shaped limiting rod 73; the elastic force of the bent elastic sheet 75 is utilized to enable the arc-shaped limiting rod 73 to automatically protrude out of the inner notch 31 once the abutting pressure of the first arc surface 311 is lost, and the arc-shaped limiting rod 73 can be prevented from accidentally retracting into the inner notch 31, and the arc-shaped limiting rod 73 can not be influenced when retracting into the inner notch 31 along with the counterclockwise rotation of the rotating ring 71.
The locking assembly 8 can lock the position of the connecting ring plate 5 in the movable space, the locking assembly 8 comprises a locking insertion plate 81 and a socket set which is in insertion fit with the locking insertion plate 81, the socket set comprises a plurality of sockets 82, all the sockets 82 are sequentially arranged on the outer wall of the connecting cylinder body 3 along the axial direction of the rotating shaft 10, and the outer wall of the connecting ring plate 5 is provided with a slot 51 which is in insertion fit with the locking insertion plate 81; the locking is accomplished by inserting the locking insertion plates 81 into the corresponding sockets 82 to lock the slots 51 of the connection ring plate 5, and since one locking insertion plate 81 may be unstable to lock the connection ring plate 5, the number of the locking assemblies 8 is controlled to be at least two, and of course, the operation is more complicated as the number is larger, and thus the locking assemblies 8 are set to be two-best.
When the brushless motor is installed in the clothes dryer, the size of the brushless motor needs to be reduced to the minimum by the locking assembly 8, so that installation is not influenced, after the brushless motor is installed, the locking assembly 8 is released until the front end cover 2 is adjusted to the optimal position and then locked, and the clothes dryer is high in flexibility and strong in adaptability.
Because the brushless motor is in operation, the axial position of the rotating shaft 10 and the rotor core may be displaced, the inner wall of the rotor core is provided with the convex ring 91, the outer wall of the rotating shaft 10 is provided with the annular groove 101 matched with the convex ring 91, and when the inner wall of the rotor core is fixed on the rotating shaft 10 by injection molding, the convex ring 91 can directly penetrate into the annular groove 101 for molding.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A brushless motor for a fan of a clothes dryer comprises a rear end cover (1), a front end cover (2), a stator (9) and a rotating shaft (10), wherein a rotor core is arranged in the stator (9), the rotating shaft (10) is arranged on the rear end cover (1), the stator (9) is connected to the rotating shaft (10) through the rotor core, the brushless motor is characterized by further comprising a connecting cylinder body (3), a fixed ring plate (4) is installed on the inner wall of the connecting cylinder body (3), the inner diameter of the fixed ring plate (4) is larger than the outer diameter of the rear end cover (1), one side, facing the head end of the connecting cylinder body (3), of the fixed ring plate (4) is provided with a plurality of uniformly distributed abutting springs (6), all abutting springs (6) are provided with the connecting ring plate (5), the head end of the connecting cylinder body (3) is provided with a limiting component (7) for preventing the connecting ring plate (5) from moving to the outside of the connecting cylinder body (3), the outer wall of the connecting cylinder body (3) is provided with a locking component (8) for locking the position of the connecting ring plate (5), the outer wall of the front end cover (2) is provided with a connecting flange (21), and the outer wall of the connecting cylinder body (3) is connected with the outer wall of the connecting cylinder body (3) and the connecting cylinder body (3) which can be connected with the outer wall of the connecting cylinder body (3), the front end cover (2) is fixedly connected with the connecting ring plate (5) through a connecting flange (21), the inner diameter of the front end cover (2) is larger than the outer diameter of the rear end cover (1), the outer diameter of the front end cover (2) is smaller than the inner diameter of the connecting cylinder body (3), and the distance between the rear surface of the stator (9) and the inner side wall of the rear end cover (1) is not smaller than 1cm.
2. The brushless motor for dryer fan of claim 1, wherein: spacing subassembly (7) include swivel becket (71), be equipped with a plurality of on the inner wall of swivel becket (71) and rotate seat (72), it installs arc gag lever post (73) to rotate on rotation seat (72), arc gag lever post (73) front portion head end is equipped with arch (74), the head end of connecting barrel (3) is equipped with interior notch (31) that a plurality of supplied arc gag lever post (73) to remove, be equipped with on the inner wall of interior notch (31) with arc gag lever post (73) back direction sliding fit's first cambered surface (311) and with arch (74) direction sliding fit's second cambered surface (312).
3. The brushless motor for dryer fans of claim 2, characterized in that: the limiting assembly (7) further comprises a plurality of bent elastic pieces (75), one ends of the bent elastic pieces (75) are attached to the inner wall of the connecting cylinder body (3), the bent elastic pieces (75) are located on the lateral side of the rotating seat (72), and the other ends of the bent elastic pieces (75) are attached to the front portion of the arc-shaped limiting rod (73).
4. The brushless motor for dryer fan of claim 3, wherein: the outer wall of the rotating ring (71) is provided with anti-skid grains.
5. The brushless motor for dryer fan of claim 1, wherein: locking subassembly (8) including locking picture peg (81) and with locking picture peg (81) cooperation socket group of pegging graft, socket group includes a plurality of sockets (82), and all sockets (82) set gradually on the outer wall of connecting barrel (3) along the axis direction of pivot (10), be equipped with on the outer wall of connecting ring board (5) and peg graft complex slot (51) with locking picture peg (81).
6. The brushless motor for dryer fan of claim 5, wherein: the number of the locking assemblies (8) is at least two, and all the locking assemblies (8) are arranged on the outer wall of the connecting cylinder body (3) at equal angles.
7. The brushless motor for dryer fan of claim 1, wherein: the inner wall of the tail end of the connecting cylinder body (3) is provided with a plurality of first connectors (32) which are arranged at equal angles, the outer wall of the tail end of the rear end cover (1) is provided with a plurality of second connectors (11), and the first connectors (32) are fixedly connected with the second connectors (11) through screws.
8. The brushless motor for dryer fan of claim 1, wherein: be equipped with bulge loop (91) on the inner wall of rotor core, be equipped with annular (101) that match with bulge loop (91) on the outer wall of pivot (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357751.3A CN114696510B (en) | 2022-04-06 | 2022-04-06 | Brushless motor for fan of clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357751.3A CN114696510B (en) | 2022-04-06 | 2022-04-06 | Brushless motor for fan of clothes dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114696510A CN114696510A (en) | 2022-07-01 |
| CN114696510B true CN114696510B (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210357751.3A Active CN114696510B (en) | 2022-04-06 | 2022-04-06 | Brushless motor for fan of clothes dryer |
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| Country | Link |
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| CN (1) | CN114696510B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279178A (en) * | 2014-08-18 | 2015-01-14 | 莱克电气股份有限公司 | Fan for carpet cleaning machine |
| CN105071579A (en) * | 2015-07-20 | 2015-11-18 | 佛山市威灵洗涤电机制造有限公司 | Motor for clothes dryer and end cover assembly thereof |
| CN109861437A (en) * | 2019-02-20 | 2019-06-07 | 沈阳兴华航空电器有限责任公司 | A kind of adjustable electric machine structure of wheelbase and its assembly method |
| CN211670720U (en) * | 2020-04-22 | 2020-10-13 | 胡琪峰 | Special rear end cover of conical motor |
| WO2021208465A1 (en) * | 2020-04-13 | 2021-10-21 | 浙江永昌电气股份有限公司 | Bldc-driver integrated motor for clothes dryer |
| KR20220001701A (en) * | 2020-06-30 | 2022-01-06 | 뉴모텍(주) | BLDC Motor for Laundry Dryer |
-
2022
- 2022-04-06 CN CN202210357751.3A patent/CN114696510B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279178A (en) * | 2014-08-18 | 2015-01-14 | 莱克电气股份有限公司 | Fan for carpet cleaning machine |
| CN105071579A (en) * | 2015-07-20 | 2015-11-18 | 佛山市威灵洗涤电机制造有限公司 | Motor for clothes dryer and end cover assembly thereof |
| CN109861437A (en) * | 2019-02-20 | 2019-06-07 | 沈阳兴华航空电器有限责任公司 | A kind of adjustable electric machine structure of wheelbase and its assembly method |
| WO2021208465A1 (en) * | 2020-04-13 | 2021-10-21 | 浙江永昌电气股份有限公司 | Bldc-driver integrated motor for clothes dryer |
| CN211670720U (en) * | 2020-04-22 | 2020-10-13 | 胡琪峰 | Special rear end cover of conical motor |
| KR20220001701A (en) * | 2020-06-30 | 2022-01-06 | 뉴모텍(주) | BLDC Motor for Laundry Dryer |
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| Publication number | Publication date |
|---|---|
| CN114696510A (en) | 2022-07-01 |
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