CN114076106A - Motor assembly, fan and range hood - Google Patents
Motor assembly, fan and range hood Download PDFInfo
- Publication number
- CN114076106A CN114076106A CN202010830523.4A CN202010830523A CN114076106A CN 114076106 A CN114076106 A CN 114076106A CN 202010830523 A CN202010830523 A CN 202010830523A CN 114076106 A CN114076106 A CN 114076106A
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- groove
- rotor
- stator
- motor assembly
- motor
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- 230000000903 blocking effect Effects 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 7
- 239000000779 smoke Substances 0.000 abstract description 52
- 238000009825 accumulation Methods 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- 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
- H02K1/22—Rotating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Abstract
The invention provides a motor assembly, a fan and a range hood. The motor assembly includes: the stator, the rotor and the oil blocking piece; the rotor is sleeved outside the stator; keep off oil spare includes: the mounting part is arranged at the first end of the stator; the first shielding part is connected with the mounting part and covers a part of the outer side surface of the rotor, and a gap is formed between the first shielding part and the rotor. The first shielding part of the oil blocking piece extends to the outer side face of the rotor, and a part of the outer side face of the rotor is shielded, so that oil smoke can only enter the space between the outer side face of the rotor and the outer side face of the rotor through the first shielding part, and can only move towards the inside of the motor assembly, and a channel for the oil smoke to flow towards the inside of the motor assembly is prolonged, so that the difficulty of the oil smoke entering the inside of the motor assembly is increased, the normal motion of the motor assembly caused by the influence of the accumulation of a large amount of oil smoke in the inside of the motor assembly is effectively avoided, and the normal operation of a range hood using the motor assembly is influenced.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to a motor assembly, a fan and a range hood.
Background
The motor of the range hood in the related art has relatively poor sealing performance, so that after the range hood runs for a long time, oil smoke can enter the motor and continuously gather to influence the normal running of the motor, and the range hood has the defects of incapability of starting, no smoke absorption and the like.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention provides an electric machine assembly.
In a second aspect of the invention, a fan is provided.
In a third aspect of the present invention, a range hood is provided.
In view of this, embodiments of the first aspect of the present invention provide a motor assembly for a fan. The motor assembly includes: the stator, the rotor and the oil blocking piece; the rotor is sleeved outside the stator; keep off oil spare includes: the mounting part is arranged at the first end of the stator; the first shielding part is connected with the mounting part and covers a part of the outer side surface of the rotor, and a gap is formed between the first shielding part and the rotor.
The motor assembly provided by the embodiment comprises a stator, a rotor and an oil baffle. The rotor is sleeved outside the stator, the mounting part of the oil blocking piece is arranged at the first end of the stator, and the first shielding part of the oil blocking piece extends to the outer side face of the rotor to cover and shield part of the outer side face of the rotor. On one hand, the oil baffle is beneficial to shielding the gap between the rotor and the stator; on the other hand makes the oil smoke can only get into between rotor and the stator after the clearance between the lateral surface of first occlusion part and rotor earlier, just can remove to motor element's inside, has prolonged the oil smoke to the inside passageway that flows of motor element to the inside degree of difficulty that the oil smoke got into motor element has been increased. The normal operation of the range hood using the motor assembly can be effectively prevented from being influenced by the normal motion of the motor assembly due to the accumulation of a large amount of oil smoke in the motor assembly.
Moreover, because the first shielding part can extend to the outer side face of the rotor from the mounting part, the air flow flowing to the first end of the stator can be effectively prevented from carrying oil smoke to directly rush into the gap between the stator and the rotor, and then enter the motor assembly. And because the flow and the velocity of flow of the air current that flow along the lateral surface of rotor are all less, further avoid a large amount of oil smoke to get into motor element's inside under the drive of air current. The sealing performance of the motor assembly is improved, and the reliability and the safety of the external rotor motor applied to the range hood are improved. In addition, a gap is formed between the first shielding part and the rotor, so that the interference of the oil blocking piece on the rotation of the rotor can be effectively avoided.
In addition, the motor assembly in the above technical solution provided by the embodiment of the present invention may further have the following additional technical features:
in one possible design, one end of the rotor close to the mounting part is provided with a first groove with an opening facing the mounting part; the stator is provided with a second groove with an opening deviating from the mounting part; the side wall of the first groove close to the central line of the rotor extends into the second groove, and a gap is formed between the groove wall of the first groove and the groove wall of the second groove.
In the design, a first groove with an opening facing the mounting part is arranged at one end of the rotor close to the mounting part, a second groove is arranged on the stator, and the openings of the first groove and the second groove are opposite. The groove side wall of the first groove close to the inner side is extended into the second groove, and at the moment, the groove side wall of the second groove far from the center line of the rotor is also extended into the first groove inevitably. After the oil smoke enters the gap between the first shielding part and the outer side face of the rotor, the oil smoke still needs to enter the gap between the groove side wall of the first groove, which is far away from the center line of the rotor, and the groove side wall of the second groove, and then turns to enter the gap between the groove side wall of the first groove, which is close to the center line of the rotor, and the groove side wall of the second groove, so that the oil smoke can enter the motor assembly. The difficulty of the oil smoke entering the motor assembly is greatly increased, so that the oil smoke can enter the motor assembly through a labyrinth passage formed among the shielding piece, the stator and the rotor. The normal operation of the range hood using the motor assembly can be effectively prevented from being influenced by the normal motion of the motor assembly due to the accumulation of a large amount of oil smoke in the motor assembly.
Moreover, a gap is formed between the groove wall of the first groove and the groove wall of the second groove, so that the interference of the two grooves on the rotation of the rotor can be effectively avoided.
In one possible design, one end of the rotor close to the mounting part is also provided with a third groove with an opening facing the mounting part; the groove side wall of the second groove close to the central line of the rotor extends into the third groove, and a gap is formed between the groove wall of the second groove and the groove wall of the third groove.
In the design, a third groove with an opening facing the mounting part is further arranged at one end, close to the mounting part, of the rotor, the openings of the first groove and the third groove are opposite to the opening of the second groove, and the groove side wall, close to the center line of the rotor, of the second groove extends into the third groove. The oil smoke enters the gap between the first shielding part and the outer side face of the rotor in sequence, enters the gap between the groove side wall of the first groove far away from the center line of the rotor and the groove side wall of the second groove, and then turns to enter the gap between the groove side wall of the first groove near the center line of the rotor and the groove side wall of the second groove, and then still needs to turn to enter the gap between the groove side wall of the second groove near the center line of the rotor and the groove side wall of the third groove far away from the center line of the rotor, and then turns to enter the gap between the groove side wall of the second groove near the center line of the rotor and the groove side wall of the third groove near the center line of the rotor, and then the oil smoke can enter the motor assembly. The difficulty of the oil smoke entering the motor assembly is further increased, so that the oil smoke can enter the motor assembly through a labyrinth passage formed among the shielding piece, the stator and the rotor. The normal operation of the range hood using the motor assembly can be effectively prevented from being influenced by the normal motion of the motor assembly due to the accumulation of a large amount of oil smoke in the motor assembly.
And moreover, a gap is formed between the groove wall of the second groove and the groove wall of the third groove, so that the interference of the two grooves on the rotation of the rotor can be effectively avoided.
In one possible design, the oil deflector further includes: the second shielding part is connected with the mounting part; one end of the rotor close to the mounting part is provided with a fourth groove with an opening facing the mounting part; the second shielding part extends into the fourth groove, and a gap is formed between the second shielding part and the groove wall of the fourth groove.
In the design, the oil blocking piece is further provided with a second shielding part connected with the mounting part, and a fourth groove with an opening facing the mounting part is formed in one end, close to the mounting part, of the rotor, so that the second shielding part extends into the fourth groove. After the oil smoke enters the gap between the first shielding part and the outer side face of the rotor, the oil smoke needs to turn to enter the gap between the second shielding part and the groove side wall of the fourth groove far away from the center line of the rotor, and then the oil smoke turns to enter the gap between the second shielding part and the groove side wall of the fourth groove close to the center line of the rotor and can enter the motor assembly. The difficulty of the oil smoke entering the motor assembly is greatly increased, so that the oil smoke can enter the motor assembly through a labyrinth passage formed among the shielding piece, the stator and the rotor. The normal operation of the range hood using the motor assembly can be effectively prevented from being influenced by the normal motion of the motor assembly due to the accumulation of a large amount of oil smoke in the motor assembly.
Moreover, a gap is formed between the second shielding part and the groove wall of the second groove, so that the second shielding part can be effectively prevented from interfering the rotation of the rotor.
In one possible design, the outer side of the stator is provided with a projection which shields at least a part of the end face of the rotor close to the mounting. The mounting portion is disposed on the protruding portion.
In this design, be provided with the bulge through the lateral surface that makes the stator to make the bulge can shelter from the rotor and be close to at least partly of the terminal surface of installation department, be favorable to sheltering from the inside that the air current that flows to the first end of stator carries the oil smoke and directly gets into motor element through the clearance between stator and the rotor. By making the mounting portion provided in the projecting portion, the assembly of the mounting portion is facilitated.
An embodiment of a second aspect of the present invention provides a fan for a range hood, the fan comprising: a motor assembly as claimed in any one of the preceding claims.
The fan that this embodiment provided, owing to have the motor element of any above-mentioned technical scheme, and then has the beneficial effect of any above-mentioned technical scheme, need not be repeated here.
In one possible design, the wind turbine further comprises: a rotating part connected with the rotor; the impeller is connected with the rotating part and can rotate under the driving of the rotating part.
In this design, the portion of rotating is connected with the rotor and makes the rotor can drive the portion of rotating and rotate, and the impeller is connected with the portion of rotating and makes the portion of rotating can drive the impeller and rotate. Therefore, in the process of producing the fan assembly, the impeller and the motor assembly can be assembled together, and after the impeller and the motor assembly are assembled, balance check is performed firstly, so that the dynamic balance after the impeller and the motor assembly are assembled is ensured, the unbalanced force generated by assembling the impeller is effectively reduced, the vibration excitation source is reduced, and the vibration noise is improved.
It should be noted that, the fan used in the range hood in the related art mostly adopts the inner rotor motor, when the balance check is performed on the impeller, the impeller is generally adopted to cooperate with the dummy shaft to perform dynamic balance alone, that is, the impeller of the actual product is installed on the rotating shaft of the machine for detecting dynamic balance, so that the impeller rotates and corrects the dynamic balance of the impeller, after the dynamic balance correction of the impeller is completed, the impeller needs to be taken down and installed on the motor of the actual product, which leads to the fact that the dynamic balance of the impeller and the motor after assembly can not be ensured, and further leads to the fan to have a great disadvantage in the aspects of vibration reduction and noise reduction. In the fan provided by the embodiment of the invention, the impeller is directly connected with the rotating part of the motor, so that the impeller and the motor can be assembled together firstly in the process of producing the fan, and the balance check is performed after the impeller and the motor are assembled, so that the dynamic balance of the assembled impeller and motor is ensured, the unbalanced force generated by the assembly of the impeller is effectively reduced, the vibration excitation source is reduced, the vibration noise is improved, and the technical problems that the dynamic balance of the assembled impeller and motor can not be ensured in the related technology, and the fan has great disadvantages in vibration and noise reduction are solved.
In one possible design, the wind turbine further comprises: a volute; the motor bracket is connected with the volute; and the fixing piece penetrates through the motor bracket and is connected with the stator.
In the design, the motor support is arranged on the volute, the stator is connected with the motor support, the stator and the motor support are particularly connected together through the fixing piece, and stable connection of the motor assembly is facilitated.
In one possible design, the mounting portion is provided with a mounting hole, and the fixing member further passes through the mounting hole to dispose the mounting portion between the stator and the motor bracket.
In the design, the mounting part is provided with the mounting hole, and the mounting part and the motor bracket are connected with the stator through the same fixing piece. On one hand, the fixing piece is not required to be arranged independently to connect the mounting part and the stator, so that parts are reduced, and the cost is saved; on the other hand is favorable to making the installation department set up steadily between stator and motor support, improves the installation stability of keeping off the oil spare.
In one possible design, the wind turbine further comprises: and the shock pad is arranged between the mounting part and the motor bracket.
In this design, through set up the shock pad between installation department and motor support, can effectively slow down the transmission of vibration between motor element and the spiral case, reduce the running noise of fan.
An embodiment of a third aspect of the present invention provides a range hood, including: the fan of any one of the above technical schemes.
The range hood provided by the embodiment has the fan according to any one of the above technical schemes, and further has the beneficial effects of any one of the above technical schemes, which are not repeated herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a schematic structural diagram of a wind turbine according to an embodiment of the present invention;
FIG. 2 shows an exploded view of a blower in accordance with an embodiment of the present invention;
FIG. 3 shows a schematic cross-sectional view of a wind turbine according to an embodiment of the invention;
FIG. 4 shows a partial enlarged view at A in FIG. 3;
FIG. 5 illustrates a partial schematic view of a wind turbine according to another embodiment of the present invention;
FIG. 6 is a schematic view of a partial structure of a wind turbine according to still another embodiment of the present invention;
FIG. 7 shows a schematic diagram of a volute of one embodiment of the invention;
fig. 8 shows a schematic structural diagram of a motor bracket according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:
100 motor components, 110 stators, 111 bulges, 112 second grooves, 120 rotors, 121 first grooves, 122 third grooves, 123 fourth grooves, 130 oil blocking pieces, 131 installation parts, 132 first shielding parts, 133 second shielding parts, 140 rotating parts, 300 impellers, 400 volutes, 410 air inlets, 500 motor supports, 510 sub-supports, 511 first assembly parts, 512 second assembly parts, 600 fixing pieces, 700 shock absorbing pads and 800 air guide rings.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A motor assembly 100, a fan and a range hood according to some embodiments of the present invention will be described below with reference to fig. 1 to 8.
The first embodiment is as follows:
an electric motor assembly 100 for a wind turbine comprising: a stator 110, a rotor 120, and an oil deflector 130. Wherein at least a portion of the stator 110 is disposed inside the rotor 120. The oil blocking member 130 includes a mounting portion 131 and a first blocking portion 132 connected to the mounting portion 131, the mounting portion 131 is connected to the first end of the stator 110, and the first blocking portion 132 extends from the mounting portion 131 to the outer side surface of the rotor 120 to cover a portion of the outer side surface of the rotor 120. A gap is left between the first shielding portion 132 and the rotor 120.
The motor assembly 100 according to the present embodiment includes a stator 110, a rotor 120, and an oil blocking member 130. The rotor 120 is sleeved outside the stator 110, and the mounting portion 131 of the oil blocking member 130 is disposed at the first end of the stator 110, so that the first shielding portion 132 of the oil blocking member 130 extends to the outer side surface of the rotor 120, and covers and shields a portion of the outer side surface of the rotor 120. On one hand, the oil baffle 130 is favorable for shielding the gap between the rotor 120 and the stator 110; on the other hand, the oil smoke can only enter the space between the rotor 120 and the stator 110 after passing through the gap between the first shielding portion 132 and the outer side surface of the rotor 120, and can only move to the inside of the motor assembly 100, so that the channel for the oil smoke to flow to the inside of the motor assembly 100 is prolonged, and the difficulty in the oil smoke entering the inside of the motor assembly 100 is increased. The normal movement of the motor assembly 100 and the normal operation of the range hood using the motor assembly 100 can be effectively prevented from being influenced by the accumulation of a large amount of oil smoke in the motor assembly 100.
Moreover, since the first blocking portion 132 can extend from the mounting portion 131 to the outer side surface of the rotor 120, the airflow flowing to the first end of the stator 110 can be effectively prevented from directly rushing into the gap between the stator 110 and the rotor 120 along with the oil smoke, and then entering the motor assembly 100. Because the flow rate and the flow velocity of the airflow flowing along the outer side surface of the rotor 120 are both small, a large amount of oil smoke is further prevented from entering the interior of the motor assembly 100 under the driving of the airflow. The sealing performance of the motor assembly 100 is improved, and the reliability and the safety of the outer rotor 120 motor applied to the range hood are improved. In addition, the first blocking portion 132 and the rotor 120 have a gap therebetween, so that the interference of the oil blocking member 130 with the rotation of the rotor 120 can be effectively avoided.
In addition, the rotor 120 is disposed outside the stator 110 to form an outer rotor 120 motor, i.e., the range hood adopts the outer rotor 120 motor. Compared with the range hood in the related art which adopts the inner rotor 120 motor, the impeller 300 is required to be matched with the dummy shaft to independently perform dynamic balance, and then the impeller 300 is taken down and installed on the motor of an actual product, so that the dynamic balance of the impeller 300 and the motor after being assembled can not be ensured. The impeller 300 of the fan is directly connected with the rotating part 140 on the rotor 120 positioned outside, so that balance check is directly performed after the impeller 300 and the motor assembly 100 are assembled in the process of producing the fan, the dynamic balance after the impeller 300 and the motor assembly 100 are assembled is ensured, the unbalanced force generated by assembling the impeller 300 is effectively reduced, the vibration excitation source is reduced, and the vibration noise is improved.
Further, the oil blocking member 130 has a ring shape.
Example two:
in addition to the first embodiment, one end of the rotor 120 close to the mounting portion 131 is further limited to be provided with a first groove 121, and the opening of the first groove 121 faces the mounting portion 131. The stator 110 is provided with a second groove 112, and the openings of the first groove 121 and the second groove 112 are distributed oppositely. The groove side wall of the second groove 112, which is away from the center line of the rotor 120, extends into the first groove 121, with a gap between the groove wall of the first groove 121 and the groove wall of the second groove 112.
In this embodiment, the second groove 112 is provided on the stator 110 by providing the first groove 121, which opens toward the mounting portion 131, at one end of the rotor 120 near the mounting portion 131, and making the openings of the first groove 121 and the second groove 112 opposite. The groove side wall of the first groove 121 close to the inner side is extended into the second groove 112, and at this time, the groove side wall of the second groove 112 far from the center line of the rotor 120 is also necessarily extended into the first groove 121. After entering the gap between the first blocking portion 132 and the outer side surface of the rotor 120, the oil smoke still needs to enter the gap between the slot side wall of the first groove 121 far away from the center line of the rotor 120 and the slot side wall of the second groove 112, and then turns to enter the gap between the slot side wall of the first groove 121 near the center line of the rotor 120 and the slot side wall of the second groove 112, and then the oil smoke can enter the motor assembly 100. The difficulty of the oil smoke entering the motor assembly 100 is greatly increased, so that the oil smoke entering the motor assembly 100 only needs to pass through the labyrinth passage formed between the shielding member, the stator 110 and the rotor 120. The normal movement of the motor assembly 100 and the normal operation of the range hood using the motor assembly 100 can be effectively prevented from being influenced by the accumulation of a large amount of oil smoke in the motor assembly 100.
Moreover, by providing a gap between the groove wall of the first groove 121 and the groove wall of the second groove 112, the interference of the rotation of the rotor 120 caused by the existence of the two grooves can be effectively avoided.
Further, one end of the rotor 120 close to the mounting portion 131 is further provided with a third groove 122, and an opening of the third groove 122 faces the mounting portion 131; the groove side wall of the second groove 112 near the center line of the rotor 120 extends into the third groove 122, and a gap is provided between the groove wall of the second groove 112 and the groove wall of the third groove 122.
The third groove 122 opening toward the mounting part 131 is further provided at one end of the rotor 120 close to the mounting part 131, and the openings of the first groove 121 and the third groove 122 are both opposite to the opening of the second groove 112, so that the groove side wall of the second groove 112 close to the center line of the rotor 120 extends into the third groove 122. The oil smoke enters the gap between the first blocking portion 132 and the outer side surface of the rotor 120 in sequence, enters the gap between the groove side wall of the first groove 121 far away from the center line of the rotor 120 and the groove side wall of the second groove 112, turns to enter the gap between the groove side wall of the first groove 121 near the center line of the rotor 120 and the groove side wall of the second groove 112, and then needs to turn to enter the gap between the groove side wall of the second groove 112 near the center line of the rotor 120 and the groove side wall of the third groove 122 far away from the center line of the rotor 120, and then turns to enter the gap between the groove side wall of the second groove 112 near the center line of the rotor 120 and the groove side wall of the third groove 122 near the center line of the rotor 120, and then can enter the motor assembly 100. The difficulty of the oil smoke entering the motor assembly 100 is further increased, so that the oil smoke entering the motor assembly 100 only needs to pass through the labyrinth passage formed between the shielding member, the stator 110 and the rotor 120. The normal movement of the motor assembly 100 and the normal operation of the range hood using the motor assembly 100 can be effectively prevented from being influenced by the accumulation of a large amount of oil smoke in the motor assembly 100.
Moreover, by providing a gap between the groove wall of the second groove 112 and the groove wall of the third groove 122, the interference of the two grooves with the rotation of the rotor 120 can be effectively avoided.
Further, the first groove 121 and the third groove 122 share one groove sidewall. The structure of the rotor 120 is simplified.
Example three:
in addition to the first embodiment, the oil blocking member 130 further includes a second shielding portion 133 connected to the mounting portion 131. One end of the rotor 120 near the mounting portion 131 is provided with a fourth groove 123, and the fourth groove 123 opens toward the mounting portion 131. The second shielding portion 133 extends into the fourth groove 123, and a gap is left between the second shielding portion and a groove wall of the fourth groove 123.
In this embodiment, the second shielding portion 133 is extended into the fourth groove 123 by further providing the oil blocking member 130 with the second shielding portion 133 connected to the mounting portion 131, and providing the end of the rotor 120 close to the mounting portion 131 with the fourth groove 123 opened toward the mounting portion 131. After entering the gap between the first shielding portion 132 and the outer side surface of the rotor 120, the oil smoke also needs to turn to enter the gap between the second shielding portion 133 and the groove sidewall of the fourth groove 123 far away from the center line of the rotor 120, and then turns to enter the gap between the second shielding portion 133 and the groove sidewall of the fourth groove 123 near the center line of the rotor 120, and then the oil smoke can enter the motor assembly 100. The difficulty of the oil smoke entering the motor assembly 100 is greatly increased, so that the oil smoke entering the motor assembly 100 only needs to pass through the labyrinth passage formed between the shielding member, the stator 110 and the rotor 120. The normal movement of the motor assembly 100 and the normal operation of the range hood using the motor assembly 100 can be effectively prevented from being influenced by the accumulation of a large amount of oil smoke in the motor assembly 100.
Moreover, by providing a gap between the second shielding portion 133 and the groove wall of the second groove 112, the interference of the second shielding portion 133 with the rotation of the rotor 120 can be effectively avoided.
Example four:
in addition to any of the above embodiments, the outer side surface of the stator 110 is further limited to be provided with a protruding portion 111, and the protruding portion 111 shields at least a portion of the end surface of the rotor 120 close to the mounting portion 131. The mounting portion 131 is provided to the protruding portion 111.
In this embodiment, the protruding portion 111 is disposed on the outer side surface of the stator 110, and the protruding portion 111 can shield at least a portion of the end surface of the rotor 120 close to the mounting portion 131, so as to facilitate shielding the oil smoke carried by the airflow flowing to the first end of the stator 110 from directly entering the interior of the motor assembly 100 through the gap between the stator 110 and the rotor 120. By providing the mounting portion 131 to the projection 111, the assembly of the mounting portion 131 is facilitated.
Further, the projections 111 are continuously distributed in the circumferential direction of the stator 110.
Further, in the case where the stator 110 is provided with the second groove 112, the second groove 112 is provided at an end of the projection 111 facing the rotor 120.
Example five:
a fan for a range hood, comprising: an electric motor assembly 100 as in any of the previous embodiments.
The fan provided in this embodiment has the advantages of any of the above embodiments due to the motor assembly 100 of any of the above embodiments, which are not repeated herein.
Further, the fan further includes a rotating portion 140 and an impeller 300, and the impeller 300 is connected to the rotor 120 through the rotating portion 140, so that the impeller 300 can be driven by the rotating portion 140 to rotate.
The impeller 300 can be rotated by the rotating part 140 by coupling the impeller 300 with the rotating part 140. In the process of producing the fan assembly, the impeller 300 and the motor assembly 100 can be assembled together, and after the impeller 300 and the motor assembly 100 are assembled, balance check is performed first, so that the dynamic balance of the impeller 300 and the motor assembly 100 after assembly is ensured, the unbalanced force generated by the assembly of the impeller 300 is effectively reduced, the vibration excitation source is reduced, and the vibration noise is improved.
It should be noted that, in the related art, the inner rotor 120 motor is mostly used for the fan used in the range hood, when the balance check is performed on the impeller 300, the impeller 300 is generally used to cooperate with the dummy shaft to perform dynamic balance alone, that is, the impeller 300 of the actual product is installed on the rotating shaft of the machine for detecting dynamic balance, so that the impeller 300 rotates and corrects the dynamic balance of the impeller 300, after the dynamic balance correction of the impeller 300 is completed, the impeller 300 also needs to be taken down and installed on the motor of the actual product, which causes that the dynamic balance of the impeller 300 and the motor after assembly cannot be ensured, and further causes a great disadvantage of the fan in the aspects of vibration reduction and noise reduction. In the fan provided by the embodiment of the present invention, the impeller 300 is directly connected to the rotating portion 140 of the motor, so that the impeller 300 and the motor can be assembled together in the process of producing the fan, and after the impeller 300 and the motor are assembled, the balance check is performed first, thereby ensuring the dynamic balance after the impeller 300 and the motor are assembled, effectively reducing the unbalanced force generated by the assembly of the impeller 300, reducing the vibration excitation source, improving the vibration noise, and solving the technical problem that the dynamic balance after the assembly of the impeller 300 and the motor in the related art cannot be ensured, thereby further causing the fan to have great disadvantages in vibration and noise reduction.
Further, the rotating portion 140 includes a flange.
Example six:
on the basis of the fifth embodiment, the fan is further limited to further include a volute 400, a motor bracket 500 and a fixing member 600. The volute 400 is connected with the motor bracket 500; the fixing member 600 is coupled to the stator 110 through the motor bracket 500.
In this embodiment, by disposing the motor bracket 500 on the scroll 400 and connecting the stator 110 to the motor bracket 500, in particular, by connecting the stator 110 to the motor bracket 500 through the fixing member 600, it is beneficial to achieve stable connection of the motor assembly 100.
Further, the fixing member 600 is a screw member.
Further, the number of the fixing members 600 is plural and is spaced around the center line of the rotor 120.
Further, the volute 400 is welded to the motor bracket 500, or the volute 400 is screwed to the motor bracket 500. The connection is firm.
Further, the volute 400 is provided with two air inlets 410 which are distributed oppositely, and the fan further comprises an air guiding ring 800, and the air guiding ring 800 is arranged at least one air inlet 410. When the impeller 300 is operated, oil smoke can enter the volute 400 from the air inlets 410 at both sides of the volute 400, and is discharged from the air outlet of the volute 400 after flowing through the motor and the impeller 300.
Further, the motor bracket 500 includes a plurality of sub-brackets 510, each sub-bracket 510 includes a first fitting portion 511 and a second fitting portion 512, and the first fitting portion 511 of each sub-bracket 510 can be split into a ring shape. The first assembling portion 511 split into a ring shape is connected to the stator 110, so that a contact area between the motor bracket 500 and the stator 110 is increased, and stable installation of the stator 110 on the motor bracket 500 is facilitated. One end of the second assembling portion 512 is connected to the first assembling portion 511, and the other end extends to the scroll 400 to be connected to the scroll 400, so that the connection between the motor bracket 500 and the scroll 400 is achieved, and the airflow can enter the scroll 400 through the gaps between the second assembling portions 512.
In a specific application, the first assembling portions 511 of the plurality of sub-brackets 510 may be welded together, and then the second assembling portions 512 may be welded to the scroll 400.
In a specific embodiment, the mounting portion 131 is provided with a mounting hole, and the fixing member 600 further passes through the mounting hole to dispose the mounting portion 131 between the stator 110 and the motor bracket 500.
In this embodiment, the mounting portion 131 is provided with a mounting hole, and the mounting portion 131 and the motor bracket 500 are connected to the stator 110 by the same fixing member 600. On one hand, the fixing piece 600 is not required to be arranged independently to connect the mounting part 131 and the stator 110, so that parts are reduced, and the cost is saved; on the other hand, the mounting portion 131 is stably disposed between the stator 110 and the motor bracket 500, thereby improving the mounting stability of the oil blocking member 130.
In a specific embodiment, the blower further includes a shock pad 700, and the shock pad 700 is disposed between the mounting portion 131 and the motor bracket 500.
In this embodiment, the vibration pad 700 is disposed between the mounting portion 131 and the motor bracket 500, so that the transmission of vibration between the motor assembly 100 and the scroll 400 can be effectively reduced, and the operation noise of the fan can be reduced.
Further, the fixing member 600 is coupled to the stator 110 through the damper pad 700 and the mounting portion 131. The mounting firmness of the cushion 700 is improved.
Further, the shock pad 700 is a rubber pad.
Example seven:
a range hood, comprising: a blower as in any one of the above embodiments.
The range hood provided in this embodiment has the advantages of any of the above embodiments due to the fan of any of the above embodiments, which is not repeated herein.
Furthermore, the range hood also comprises a frame and a fume collecting hood, the fan is arranged in the frame, and the fume collecting hood is arranged at one end of the frame.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A motor assembly for a range hood, the motor assembly comprising:
a stator;
the rotor is sleeved outside the stator;
keep off oil spare, keep off oil spare includes:
a mounting portion disposed at a first end of the stator;
the first shielding part is connected with the mounting part and covers a part of the outer side face of the rotor, and a gap is formed between the first shielding part and the rotor.
2. The electric machine assembly of claim 1,
one end of the rotor, which is close to the mounting part, is provided with a first groove with an opening facing the mounting part;
the stator is provided with a second groove with an opening deviating from the mounting part;
the groove side wall of the first groove close to the central line of the rotor extends into the second groove, and a gap is formed between the groove wall of the first groove and the groove wall of the second groove.
3. The electric machine assembly of claim 2,
one end of the rotor, which is close to the mounting part, is also provided with a third groove with an opening facing the mounting part;
the groove side wall of the second groove close to the central line of the rotor extends into the third groove, and a gap is formed between the groove wall of the second groove and the groove wall of the third groove.
4. The electric machine assembly of claim 1,
the oil blocking member further includes:
the second shielding part is connected with the mounting part;
one end of the rotor, which is close to the mounting part, is provided with a fourth groove with an opening facing the mounting part;
the second shielding part extends into the fourth groove, and a gap is formed between the second shielding part and the groove wall of the fourth groove.
5. The electric machine assembly according to any of claims 1 to 4,
the outer side surface of the stator is provided with a protruding part which shields at least one part of the end surface of the rotor close to the mounting part;
the mounting portion is disposed in the protruding portion.
6. A fan for a range hood, the fan comprising:
the electric machine assembly of any of claims 1 to 5;
a rotating part connected with the rotor;
the impeller is connected with the rotating part and can rotate under the driving of the rotating part.
7. The fan of claim 6, further comprising:
a volute;
the motor bracket is connected with the volute;
and the fixing piece penetrates through the motor bracket and is connected with the stator.
8. The fan of claim 7,
the installation department is provided with the mounting hole, the mounting still passes the mounting hole is in order to incite somebody to action the installation department sets up the stator with between the motor support.
9. The fan of claim 8, further comprising:
and the shock pad is arranged between the mounting part and the motor bracket.
10. A range hood, comprising:
the blower of any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830523.4A CN114076106B (en) | 2020-08-18 | 2020-08-18 | Motor assembly, fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010830523.4A CN114076106B (en) | 2020-08-18 | 2020-08-18 | Motor assembly, fan and range hood |
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| Publication Number | Publication Date |
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| CN114076106A true CN114076106A (en) | 2022-02-22 |
| CN114076106B CN114076106B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010830523.4A Active CN114076106B (en) | 2020-08-18 | 2020-08-18 | Motor assembly, fan and range hood |
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| CN (1) | CN114076106B (en) |
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| KR100793783B1 (en) * | 2006-10-16 | 2008-01-11 | 엘지전자 주식회사 | An outer rotor type motor of the sealing structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114076106B (en) | 2024-03-12 |
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