CN206992884U - Permanent magnet DC motor and food processor - Google Patents

Permanent magnet DC motor and food processor Download PDF

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Publication number
CN206992884U
CN206992884U CN201720820787.5U CN201720820787U CN206992884U CN 206992884 U CN206992884 U CN 206992884U CN 201720820787 U CN201720820787 U CN 201720820787U CN 206992884 U CN206992884 U CN 206992884U
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China
Prior art keywords
fan
rotating shaft
motor
permanent magnet
ring
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Active
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CN201720820787.5U
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Chinese (zh)
Inventor
梁显堂
刘云祥
陈连城
王志锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Consumer Electric Manufacturing Co Ltd
Guangdong Midea Life Electric Manufacturing Co Ltd
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Guangdong Midea Consumer Electric Manufacturing Co Ltd
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Priority to CN201720820787.5U priority Critical patent/CN206992884U/en
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Abstract

The utility model provides a kind of permanent magnet DC motor and food processor, for the permanent magnet DC motor of food processor, including:Field frame assembly;Rotor assembly, it includes rotating shaft;First support assembly and second support assembly, the two is respectively sleeved at the both ends of rotating shaft, first support assembly and second support assembly are provided with the hollow out extended along the length direction of rotating shaft, and first support assembly, second support assembly and field frame assembly enclose cavity, and rotor assembly is located in cavity;And fan, it is located in cavity, and fan is set in rotating shaft.Permanent magnet DC motor provided by the utility model, by carrying out appropriate hollow out to the inside of first support assembly and second support assembly, greater room can be vacateed and be easy to not produce interference with built-in fan;In axially increased opening axial air-flow can be easy to pass through simultaneously.In addition, fan is within the cavity, the radial dimension of fan is defined, smaller fan blade can be used, so as to reduce noise.

Description

Permanent magnet DC motor and food processor
Technical field
Household appliance technical field is the utility model is related to, at a kind of permanent magnet DC motor and a kind of food Reason machine.
Background technology
Due to being restricted by permanent magnet DC motor internal structural space, the cooling flabellum of motor is external in outside motor, by In external fan blade away from thermal source, i.e. rotor windings, and air-flow reduce further wind because being isolated by fore-stock and after-poppet The cooling effect of leaf;Simultaneously because air-flow forms in disorder air-flow after electric machine support, making an uproar for air whirl is incidentally generated Sound.
Correlation technique to solve the above problems, frequently with the method for increasing fan blade external diameter or using fan blade built in flat flow, The former improves motor temperature rise by improving air quantity, but the noise of motor also synchronously rises;The latter is only to the thermal source of motor one end There is cooling effect, but be bearing end for other end thermal source, because no air-flow passes through, it is impossible to produce cooling effect.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art or correlation technique.
Therefore, a purpose of the present utility model is, a kind of permanent magnet DC motor is proposed.
Another purpose of the present utility model is, proposes a kind of food processor.
In view of this, according to a purpose of the present utility model, there is provided a kind of permanent magnet DC motor, for food preparation Machine, including:Field frame assembly;Rotor assembly, it includes rotating shaft;First support assembly and second support assembly, the two is arranged respectively At the both ends of rotating shaft, the hollow out of first support assembly and second support assembly provided with the length direction extension along rotating shaft, first Frame assembly, second support assembly and field frame assembly enclose cavity, and rotor assembly is located in cavity;And fan, it is located at cavity In, fan is set in rotating shaft.
Permanent magnet DC motor provided by the utility model, by entering to the inside of first support assembly and second support assembly The appropriate hollow out of row, greater room can be vacateed and be easy to not produce interference with built-in fan;Simultaneously can be just in axially increased opening Air-flow in axial direction passes through.In addition, fan is within the cavity, the radial dimension of fan is defined, smaller wind can be used Leaf, so as to reduce noise.
In addition, the permanent magnet DC motor in above-mentioned technical proposal provided by the utility model, can also have as follows Additional technical feature:
In the above-mentioned technical solutions, it is preferable that fan is tube-axial fan.
In the technical scheme, by setting tube-axial fan inside permanent magnet DC motor, axial flow can be formed, directly Connect by thermal source, so as to improve radiating effect.
In any of the above-described technical scheme, it is preferable that fan includes fixed part, is provided with pilot hole in fixed part, fan leads to Cross pilot hole to be set in rotating shaft, pilot hole is interference fitted with rotating shaft.
In the technical scheme, by setting fixed part, and pilot hole is opened up, fan can be set in rotating shaft, to turn The rotation of axle drives fan synchronous averaging, both need not separately set drive device, can radiate in time again;Pilot hole uses interference with rotating shaft Coordinate, make the stable connection of pilot hole and rotating shaft reliable, ensure that fan is synchronized with the movement with rotating shaft, avoid because of fan skidding and shadow Radiating effect is rung, improves direct current permanent magnet motor reliability of operation.
In any of the above-described technical scheme, it is preferable that be provided with a ring shape on rotating shaft shaft part outer wall corresponding with fan Mounting groove, pilot hole are adapted with annular mounting groove.
In the technical scheme, by opening up the annular mounting groove being adapted with pilot hole on rotating shaft outer wall, it can limit Fan moves along shaft length direction, even if fan surprisingly skids, can also avoid its in fan and permanent magnet DC motor His structure bumps against, and further ensure that the reliability of permanent magnet DC motor.
In any of the above-described technical scheme, fan also includes blade and outer shroud, and outer shroud and fixed part are with one heart and along rotating shaft Length direction extends, and blade is connected between outer shroud and fixed part.
In the technical scheme, by setting up the outer shroud concentric with fixed part, and the blade of fan is made to be folded in fixed part Between outer shroud, it can be ensured that blade keeps stable in rotation process, improves the reliability and intensity of fan.
In any of the above-described technical scheme, it is preferable that fixed part includes the first ring, the second ring and connection rib;First ring and Second ring extends with one heart and along the length direction of rotating shaft, and the internal face of the first ring forms pilot hole, and the second ring is connected with blade;Even Rib is connected between the first ring and the second ring, and using the size of the length direction along rotating shaft as thickness, the thickness for connecting rib is less than The thickness of first ring and the second ring.
In the technical scheme, fixed part is by the first ring, the second ring and is connected to thinner connection rib group therebetween Into so that fixed part has certain receiving space in the axial direction, it can be ensured that fixed part avoids rotor iron in rotation process Core makes fan be more suitable for the narrow space inside permanent magnet DC motor without interfering.
In any of the above-described technical scheme, it is preferable that rotor assembly also includes rotor core, winding and commutator, rotor Iron core and commutator are set in rotating shaft, and for commutator between first support assembly and rotor core, winding is wrapped in rotor On iron core, the interface line of winding electrically connects with commutator;Fan is between rotor core and second support assembly.
In the technical scheme, rotor assembly includes rotor core, winding and commutator, and winding is wrapped in rotor core Above and with commutator electrically connect, then be aided with carbon brush and contradict in the both sides of commutator, it is possible to achieve the lasting rotation of rotor assembly.By In inside cavity spaces compact, rotor core is located at center, and it is provided with commutator towards the side of first support assembly, Now fan is arranged between rotor core and second support assembly, the space in cavity can have both been made full use of, avoid again Fan is interfered with rotor core and commutator, improves the reliability of permanent magnet DC motor.
In any of the above-described technical scheme, it is preferable that rotor core is provided centrally with supporting part, length of the supporting part along rotating shaft Degree direction extends through rotor core, and rotor core is set in rotating shaft by supporting part;The external diameter of the fixed part of fan is big In or equal to supporting part external diameter.
In the technical scheme, by the centrally disposed supporting part in rotor core, the metal in rotor core can be avoided Directly and shaft contacts, moreover it is possible to mitigate the weight of rotor core, reduce centrifugal force caused by rotor core high-speed rotation, improve Security.Correspondingly, make the fixed part external diameter of fan be more than or equal to the external diameter of supporting part, air-flow can both be concentrated on to winding institute Annular region, improve heat exchange efficiency, the area of fixed part can be expanded again, improve the stability that fan rotates.
To sum up, the utility model provides a kind of permanent magnet DC motor, sets tube-axial fan in motor internal, reduces The size of fan blade, so as to reduce noise;Axial air-flow is formed simultaneously, thermal source is directly over, improves radiating effect.
According to another purpose of the present utility model, there is provided a kind of food processor, including:Any technical side as described above Permanent magnet DC motor described in case.
Food processor provided by the utility model, including the permanent magnet DC motor described in any of the above-described technical scheme, because This has whole beneficial effects of the permanent magnet DC motor, will not be repeated here.
In any of the above-described technical scheme, it is preferable that food processor is at least one of:Wall-breaking machine, mixer, material Reason machine, soy bean milk making machine and juice extractor.
In the technical scheme, food processor is at least one of:Wall-breaking machine, mixer, cooking machine, soy bean milk making machine and Juice extractor, wherein, especially wall-breaking machine is, it is necessary to which motor has larger power and rotating speed, and caused heat is also larger, by adopting With permanent magnet DC motor provided by the utility model, radiating effect can be improved, reduces the noise of fan.In addition, DC Motor has lower idler revolutions, helps to reduce idle running noise compared to AC series excited machine.
Additional aspect and advantage of the present utility model will become obvious in following description section, or new by this practicality The practice of type is recognized.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein:
Fig. 1 shows sectional view of the permanent magnet DC motor of one embodiment offer of the present utility model on longitudinal section;
Fig. 2 shows the blast sectional view for the permanent magnet DC motor that one embodiment of the present utility model provides;
Fig. 3 shows the stereogram for the fan that one embodiment of the present utility model provides;
Fig. 4 shows the top view for the fan that one embodiment of the present utility model provides;
Fig. 5 shows sectional view of the fan of one embodiment offer of the present utility model on longitudinal section.
Wherein, corresponding relations of the Fig. 1 into Fig. 5 between reference and component names is:
1 permanent magnet DC motor, 10 field frame assemblies, 20 rotor assemblies, 22 rotating shafts, 24 rotor cores, 242 supporting parts, 26 around Group, 28 commutators, 30 first support assemblies, 32 clutch shaft bearings, 40 second support assemblies, 42 second bearings, 50 fans, 52 fix Portion, 522 pilot holes, 524 first rings, 526 second rings, 528 connection ribs, 54 blades, 56 outer shrouds, 60 bolts.
Embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality New to be different from other modes described here using other to implement, therefore, the scope of protection of the utility model is simultaneously Do not limited by following public specific embodiment.
Referring to Fig. 1 to Fig. 5 descriptions according to the utility model some embodiments permanent magnet DC motor 1.
As depicted in figs. 1 and 2, the utility model provides a kind of permanent magnet DC motor 1, for food processor, including: Field frame assembly 10;Rotor assembly 20, it includes rotating shaft 22;First support assembly 30 and second support assembly 40, the two covers respectively The both ends of rotating shaft 22 are located at, first support assembly 30 and second support assembly 40 are provided with along what the length direction of rotating shaft 22 extended and engraved Sky, first support assembly 30, second support assembly 40 and field frame assembly 10 enclose cavity, and rotor assembly 20 is located in cavity; And fan 50, it is located in cavity, and fan 50 is set in rotating shaft 22.
Permanent magnet DC motor 1 provided by the utility model, by first support assembly 30 and second support assembly 40 Inside carries out appropriate hollow out, can vacate greater room and be easy to not produce interference with built-in fan 50;Simultaneously axially increased Opening can be easy to axial air-flow to pass through.In addition, fan 50 is within the cavity, the radial dimension of fan 50 is defined, can be used Smaller fan blade, so as to reduce noise.As shown in figure 1, curve with the arrow illustrates the flow direction of air-flow.Specifically Ground, field frame assembly 10, rotor assembly 20, first support assembly 30 and second support assembly 40 are fastened on one by bolt 60 Rise;Clutch shaft bearing 32 and second bearing 42 are respectively equipped with first support assembly 30 and second support assembly 40, so that rotating shaft 22 Rotate smooth.
As shown in Figures 3 to 5, in one embodiment of the present utility model, it is preferable that fan 50 is tube-axial fan.
In this embodiment, by setting tube-axial fan inside permanent magnet DC motor 1, axial flow can be formed, directly Connect by thermal source, so as to improve radiating effect.
As shown in Figures 3 to 5, in one embodiment of the present utility model, it is preferable that fan includes fixed part 52, Gu Determine to be provided with pilot hole 522 in portion 52, fan 50 is set in rotating shaft 22 by pilot hole 522, pilot hole 522 and the interference of rotating shaft 22 Coordinate.
In this embodiment, by setting fixed part 52, and pilot hole 522 is opened up, fan 50 can be set in rotating shaft 22 On, the synchronous averaging of fan 50 is driven with the rotation of rotating shaft 22, drive device both need not be separately set, can radiate in time again;Pilot hole 522 With rotating shaft 22 using being interference fitted, make pilot hole 522 and the stable connection of rotating shaft 22 reliable, ensure that fan 50 is synchronous with rotating shaft 22 Motion, avoid influences radiating effect because fan 22 skids, and improves the reliability of operation of direct current permanent magnet motor 1.
In one embodiment of the present utility model, it is preferable that set on the shaft part outer wall corresponding with fan 50 of rotating shaft 22 There is a circle annular mounting groove, pilot hole 522 is adapted with annular mounting groove.
In this embodiment, by opening up the annular mounting groove being adapted with pilot hole 522 on the outer wall of rotating shaft 22, can limit The moving along the length direction of rotating shaft 22 of fan 50 processed, skidded even if fan 50 is unexpected, fan 50 and DC can also be avoided Other structures in motor 1 bump against, and further ensure that the reliability of permanent magnet DC motor 1.
As shown in Figures 3 to 5, in one embodiment of the present utility model, fan 50 also includes blade 54 and outer shroud 56, Outer shroud 56 and fixed part 52 extend with one heart and along the length direction of rotating shaft 22, blade 54 be connected to outer shroud 56 and fixed part 52 it Between.
In the technical scheme, by setting up the outer shroud 56 concentric with fixed part 52, and the sandwiched of blade 54 of fan 50 is made Between fixed part 52 and outer shroud 54, it can be ensured that blade 54 keeps stable in rotation process, improves the reliability of fan 50 And intensity.
As shown in Figures 3 to 5, in one embodiment of the present utility model, it is preferable that fixed part 52 includes the first ring 522nd, the second ring 524 and connection rib 526;First ring 522 and 524 concentric and along rotating shaft 22 length direction of the second ring extend, the The internal face of one ring 522 forms pilot hole 522, and the second ring 524 is connected with blade 54;Connection rib 526 is connected to the He of the first ring 522 Between second ring 524, using the size of the length direction along rotating shaft 22 as thickness, the thickness of connection rib 526 is less than the He of the first ring 522 The thickness of second ring 524.
In this embodiment, fixed part 52 by the first ring 522, the second ring 524 and is connected to thinner company therebetween Rib 526 forms so that fixed part 52 has certain receiving space in the axial direction, it can be ensured that fixed part 52 is in rotation process In avoid rotor core 24 without interfering, the narrow space for making fan 50 be more suitable for inside permanent magnet DC motor 1.
As depicted in figs. 1 and 2, in one embodiment of the present utility model, it is preferable that rotor assembly 20 also includes rotor Iron core 24, winding 26 and commutator 28, rotor core 24 and commutator 28 are set in rotating shaft 22, and commutator 28 is located at first Between frame assembly 30 and rotor core 24, winding 26 is wrapped on rotor core 24, interface line and the electricity of commutator 28 of winding 26 Connection;Fan 50 is between rotor core 24 and second support assembly 40.
In this embodiment, rotor assembly 20 includes rotor core 24, winding 26 and commutator 28, and winding 26 is wrapped in Electrically connected on rotor core 24 and with commutator 28, then be aided with carbon brush and contradict in the both sides of commutator 28, it is possible to achieve rotor is total Into 20 lasting rotation.Due to inside cavity spaces compact, rotor core 24 is located at center, and it is towards first support assembly 30 side is provided with commutator 28, and now fan 50 is arranged between rotor core 24 and second support assembly 40, both may be used To make full use of the space in cavity, it turn avoid fan 50 and interfere with rotor core 24 and commutator 28, it is straight to improve permanent magnetism Flow the reliability of motor 1.
As shown in Fig. 2 in one embodiment of the present utility model, it is preferable that rotor core 24 is provided centrally with supporting Portion 242, length direction of the supporting part 242 along rotating shaft 22 extend through rotor core 24, and rotor core 24 passes through supporting part 242 It is set in rotating shaft 22;The external diameter of the fixed part 52 of fan 50 is more than or equal to the external diameter of supporting part 242.
In this embodiment, by the centrally disposed supporting part 242 in rotor core 24, can avoid in rotor core 24 Metal directly contacts with rotating shaft 22, moreover it is possible to mitigates the weight of rotor core 24, reduces caused by the high-speed rotation of rotor core 24 Centrifugal force, improve security.Correspondingly, make the external diameter of fixed part 52 of fan 50 be more than or equal to the external diameter of supporting part 242, both may be used Annular region air-flow concentrated on where winding 26, improves heat exchange efficiency, can expand the area of fixed part 52 again, improves fan 50 stability rotated.
To sum up, the utility model provides a kind of permanent magnet DC motor 1, sets tube-axial fan in motor internal, reduces The size of fan blade, so as to reducing noise;Axial air-flow is formed simultaneously, thermal source is directly over, improves radiating effect.
According to another purpose of the present utility model, there is provided a kind of food processor, including:Such as above-mentioned any embodiment Described permanent magnet DC motor 1.
Food processor provided by the utility model, including the permanent magnet DC motor 1 described in any of the above-described embodiment, therefore Whole beneficial effects with the permanent magnet DC motor 1, will not be repeated here.
In one embodiment of the present utility model, it is preferable that food processor is at least one of:Wall-breaking machine, stir Mix machine, cooking machine, soy bean milk making machine and juice extractor.
In this embodiment, food processor is at least one of:Wall-breaking machine, mixer, cooking machine, soy bean milk making machine and squeezing Juice machine, wherein, especially for wall-breaking machine, it is necessary to which motor has larger power and rotating speed, caused heat is also larger, by using Permanent magnet DC motor 1 provided by the utility model, radiating effect can be improved, reduce the noise of fan 50.In addition, DC Motor 1 has lower idler revolutions, helps to reduce idle running noise compared to AC series excited machine.
In the utility model, term " multiple " then refers to two or more, is limited unless otherwise clear and definite.Term The term such as " installation ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, Can be detachably connected, or be integrally connected;" connected " can be joined directly together, and can also pass through the indirect phase of intermediary Even.For the ordinary skill in the art, it can understand above-mentioned term in the utility model as the case may be Concrete meaning.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that combining specific features, structure, material or feature that the embodiment or example describe is contained in of the present utility model at least one In individual embodiment or example.In this manual, identical embodiment is not necessarily referring to the schematic representation of above-mentioned term Or example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or example In combine in an appropriate manner.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

  1. A kind of 1. permanent magnet DC motor, for food processor, it is characterised in that including:
    Field frame assembly;
    Rotor assembly, it includes rotating shaft;
    First support assembly and second support assembly, the two is respectively sleeved at the both ends of the rotating shaft, the first support assembly The hollow out extended along the length direction of the rotating shaft, the first support assembly, described the are provided with the second support assembly Two bracket assemblys and the field frame assembly enclose cavity, and the rotor assembly is located in the cavity;And
    Fan, it is located in the cavity, and the fan is set in the rotating shaft.
  2. 2. permanent magnet DC motor according to claim 1, it is characterised in that
    The fan is tube-axial fan.
  3. 3. permanent magnet DC motor according to claim 2, it is characterised in that
    The fan includes fixed part, is provided with pilot hole in the fixed part, the fan is set in institute by the pilot hole State in rotating shaft, the pilot hole is interference fitted with the rotating shaft.
  4. 4. permanent magnet DC motor according to claim 3, it is characterised in that
    A circle annular mounting groove, the pilot hole and the ring are provided with rotating shaft shaft part outer wall corresponding with the fan Shape mounting groove is adapted.
  5. 5. permanent magnet DC motor according to claim 3, it is characterised in that
    The fan also includes blade and outer shroud, and the outer shroud and the fixed part prolong with one heart and along the length direction of the rotating shaft Stretch, the blade is connected between the outer shroud and the fixed part.
  6. 6. permanent magnet DC motor according to claim 5, it is characterised in that
    The fixed part includes the first ring, the second ring and connection rib;
    First ring and second ring extend with one heart and along the length direction of the rotating shaft, the internal face shape of first ring Into the pilot hole, second ring is connected with the blade;
    It is described connection rib be connected between first ring and second ring, using the size of the length direction along the rotating shaft as Thickness, the thickness of the connection rib are less than the thickness of first ring and second ring.
  7. 7. the permanent magnet DC motor according to any one of claim 3 to 6, it is characterised in that
    The rotor assembly also includes rotor core, winding and commutator, and the rotor core and the commutator are set in institute State in rotating shaft, between the first support assembly and the rotor core, the winding is wrapped in described the commutator On rotor core, the interface line of the winding electrically connects with the commutator;
    The fan is between the rotor core and the second support assembly.
  8. 8. permanent magnet DC motor according to claim 7, it is characterised in that
    The rotor core is provided centrally with supporting part, and length direction of the supporting part along the rotating shaft extends through described Rotor core, the rotor core are set in the rotating shaft by the supporting part;
    The external diameter of the fixed part of the fan is more than or equal to the external diameter of the supporting part.
  9. A kind of 9. food processor, it is characterised in that including:
    Permanent magnet DC motor as any one of claim 1 to 8.
  10. 10. food processor according to claim 9, it is characterised in that the food processor is at least one of: Wall-breaking machine, mixer, cooking machine, soy bean milk making machine and juice extractor.
CN201720820787.5U 2017-07-07 2017-07-07 Permanent magnet DC motor and food processor Active CN206992884U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720820787.5U CN206992884U (en) 2017-07-07 2017-07-07 Permanent magnet DC motor and food processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720820787.5U CN206992884U (en) 2017-07-07 2017-07-07 Permanent magnet DC motor and food processor

Publications (1)

Publication Number Publication Date
CN206992884U true CN206992884U (en) 2018-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720820787.5U Active CN206992884U (en) 2017-07-07 2017-07-07 Permanent magnet DC motor and food processor

Country Status (1)

Country Link
CN (1) CN206992884U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019169828A1 (en) * 2018-03-07 2019-09-12 广东美的生活电器制造有限公司 Food processor and electric motor for food processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019169828A1 (en) * 2018-03-07 2019-09-12 广东美的生活电器制造有限公司 Food processor and electric motor for food processor

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