CN112290704A - Switched reluctance motor and intelligent cooking equipment - Google Patents
Switched reluctance motor and intelligent cooking equipment Download PDFInfo
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- CN112290704A CN112290704A CN201910675897.0A CN201910675897A CN112290704A CN 112290704 A CN112290704 A CN 112290704A CN 201910675897 A CN201910675897 A CN 201910675897A CN 112290704 A CN112290704 A CN 112290704A
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- 238000010411 cooking Methods 0.000 title claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 88
- 239000003638 chemical reducing agent Substances 0.000 claims description 28
- 230000017525 heat dissipation Effects 0.000 claims description 27
- 238000009423 ventilation Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004804 winding Methods 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
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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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a switched reluctance motor and intelligent cooking equipment, wherein the switched reluctance motor comprises: a rotor including a rotor body, and a plurality of rotor salient poles protruding radially outward from the rotor body; the noise reduction piece is arranged between two adjacent rotor salient poles, the inner end of the noise reduction piece in the radial direction is provided with a first clamping part, and a second clamping part matched with the first clamping part is formed at the inner end of the noise reduction piece in the radial direction between the two adjacent rotor salient poles; the noise reduction piece is provided with a noise reduction cambered surface at the outer end in the radial direction, and the noise reduction cambered surface fills the interval between the two adjacent rotor salient poles at the outer end in the radial direction. The technical scheme of the invention can reduce the working noise of the switched reluctance motor.
Description
Technical Field
The invention relates to the technical field of switched reluctance motors, in particular to a switched reluctance motor and intelligent cooking equipment.
Background
The conventional permanent magnet synchronous motor generally adopts a rotor provided with magnets, but the magnets are easily affected by temperature, current and the like to generate demagnetization, and in a serious case, the demagnetization can be caused, so that the failure of the permanent magnet synchronous motor is caused. In addition, permanent magnets are expensive, especially rare earth permanent magnets, and thus the above reasons limit the range of applications thereof.
The switched reluctance motor has been widely or initially applied to various fields such as industry, aviation industry and home use due to its advantages of simple design, firm structure, no need of permanent magnets, low cost, high efficiency, large starting torque, flexible and simple control, etc.
Switched reluctance machines typically include a stator and a rotor supported for rotation relative to the stator. There is a very small gap between the rotor and the stator. Since both the stator and the rotor have salient poles that are raised, this form is also referred to as a double salient pole structure, with the stator salient poles having coils wound thereon, i.e., stator windings, providing excitation for rotation of the motor, and the rotor having no coils thereon. Switched reluctance motors operate using reluctance variations to generate drive torque. Reluctance motors produce torque when the rotor attempts to rotate to a position that minimizes the reluctance of the magnetic circuit and maximizes the inductance of the energized stator windings. Due to the rotor salient pole structure of the switched reluctance motor, air flow stirring can be generated in a groove between the rotor salient poles, so that working noise is increased, and the switched reluctance motor is particularly prominent in the field of intelligent cooking equipment.
Disclosure of Invention
The invention mainly aims to provide a switched reluctance motor, and aims to solve the technical problem that the switched reluctance motor in the prior art is high in working noise.
In order to achieve the above object, the present invention provides a switched reluctance motor including:
a rotor including a rotor body, and a plurality of rotor salient poles protruding radially outward from the rotor body; and
the noise reduction piece is arranged between two adjacent rotor salient poles, the inner end of the noise reduction piece in the radial direction is provided with a first clamping part, and a second clamping part matched with the first clamping part is formed at the inner end of the noise reduction piece in the radial direction between the two adjacent rotor salient poles; wherein,
the outer end of the noise reduction piece in the radial direction is provided with a noise reduction cambered surface, and the noise reduction cambered surface fills the interval between the two adjacent rotor salient poles in the outer end in the radial direction.
Optionally, the noise reduction cambered surface is flush with the end faces of the two adjacent rotor salient poles and has the same curvature.
Optionally, the noise reducer further has connecting sides each disposed facing one of the adjacent rotor salient poles, the connecting sides extending away from each other from a radially inner side toward an outer side;
the first clamping part is at least a clamping groove arranged on one connecting side surface, and the second clamping part is a clamping protrusion matched with the clamping groove; or
The first clamping portion is at least arranged on one of the clamping protrusions on the connecting side face, and the second clamping portion is matched with the clamping groove of the clamping protrusion.
Optionally, at least one of the two surfaces of the noise reduction piece, which are arranged opposite to each other in the axial direction, is provided with a dispensing slot.
Optionally, the noise reduction part is provided with a plurality of heat dissipation ventilation grooves in an axial direction in a penetrating manner.
Optionally, the noise reduction part is made of a plastic material, and the two sides of the noise reduction part along the circumferential direction are respectively provided with the heat dissipation ventilation grooves.
Optionally, the noise reduction pieces are arranged in plurality one by one between two adjacent rotor salient poles, and the noise reduction pieces are connected with each other through a connecting ring.
Optionally, the noise reduction part is made of a metal material, the heat dissipation ventilation groove is formed in the middle of the noise reduction part, and the two connecting side faces are respectively abutted against the rotor salient poles facing the connecting side faces.
Optionally, a plurality of clamping convex ribs extending along the axial direction are arranged on the connecting side face at intervals.
The invention also provides intelligent cooking equipment, which comprises a base and a stirring container arranged on the base, wherein a switched reluctance motor is arranged in the base, and the switched reluctance motor comprises:
a rotor including a rotor body, and a plurality of rotor salient poles protruding radially outward from the rotor body; and
the noise reduction piece is arranged between two adjacent rotor salient poles, the inner end of the noise reduction piece in the radial direction is provided with a first clamping part, and a second clamping part matched with the first clamping part is formed at the inner end of the noise reduction piece in the radial direction between the two adjacent rotor salient poles; wherein,
the outer end of the noise reduction piece in the radial direction is provided with a noise reduction cambered surface, and the noise reduction cambered surface fills the interval between the two adjacent rotor salient poles in the outer end in the radial direction.
According to the technical scheme, the noise reduction piece is introduced into the switched reluctance motor, the noise reduction piece is arranged between two adjacent rotor salient poles of the rotor, adaptive clamping parts are arranged between the inner end of the noise reduction piece and the rotor salient poles, and the outer end of the noise reduction piece is provided with the noise reduction cambered surface which fills the interval between the two adjacent rotor salient poles, so that the noise problem caused by airflow stirring existing in the grooves between the rotor salient poles when the rotor rotates is effectively solved, and the working noise of the switched reluctance motor is reduced. Especially to the intelligent cooking equipment who disposes switched reluctance motor, this technical scheme has reduced switched reluctance motor's noise at work, has effectively reduced the holistic noise at work of intelligent cooking equipment promptly, so, can improve intelligent cooking equipment's user experience greatly.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a switched reluctance motor according to an embodiment of the present invention;
FIG. 2 is an exploded schematic view of the switched reluctance machine of FIG. 1;
FIG. 3 is a schematic view of the rotor and the electrode shaft of FIG. 2;
FIG. 4 is a schematic view of the rotor of FIG. 3;
FIG. 5 is a schematic view of the rotor of FIG. 4 from another perspective;
FIG. 6 is a schematic structural view of the noise reducer of FIG. 5;
fig. 7 is a schematic structural view of a rotor of a switched reluctance motor according to another embodiment of the present invention;
FIG. 8 is a schematic structural view of the noise reducer of FIG. 7;
fig. 9 is a schematic structural diagram of the intelligent cooking device of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a switched reluctance motor and intelligent cooking equipment with the same. In this embodiment, referring to fig. 9, the intelligent cooking device includes a base 100 and a stirring container 200 disposed on the base 100, the base 100 is internally provided with the switched reluctance motor, and the switched reluctance motor is configured to drive a stirring tool in the stirring container 200 to rotate, so as to process food materials in the stirring container 200, for example, but not limited to, the intelligent cooking device further includes a steamer disposed at the top of the stirring container 200; without loss of generality, the intelligent cooking equipment can be a blender with only a stirring function, or a food processor with functions of stirring, heating and the like, and in addition, the design is not limited to the above, and the switched reluctance motor can also be applied to the technical fields of textile machine equipment, oil exploitation equipment and the like.
The structure and operation principle of the rotor 1 and the stator 2 of the switched reluctance motor will be briefly described below by taking an intelligent cooking apparatus as an example. Referring to fig. 1 and 2, in a motor case 3 of a switching reluctance motor, a rotor 1 having a plurality of rotor salient poles 12 protruding radially outward from a rotor body 11 is mounted in a central cavity of a stator 2 having a plurality of stator salient poles (not shown) protruding radially inward from a stator base. The center of the rotor 1 has a hole for the motor shaft 4 for the output torque. The outer periphery of each stator salient pole is wound with a stator winding, and the outer periphery of each rotor salient pole 12 is free of a winding. There is a small gap between the end of the rotor salient pole 12 and the opposite end of the stator salient pole, thereby enabling the rotor 1 to freely rotate in the inner cavity of the stator 2. The stator base (not shown) and the stator salient poles, and the rotor body 11 and the rotor salient poles 12 are made of a material having good magnetic permeability. When the stator windings wound around each stator salient pole are supplied with current at a certain timing, a magnetic field for driving the rotor 1 to rotate is generated.
It can be understood that the rotor 1 of the switched reluctance motor is continuously moved in the rotational direction, the doubly salient structure of the stator 2 and the rotor 1 causes an increase in windage loss, thereby reducing the operating performance of the motor, and also causes a problem of an increase in noise due to air flow agitation existing in the slots between the salient poles 12 of the rotor when the rotor is rotated. To improve this problem, in an embodiment of the present invention, referring to fig. 3 to 8, the switched reluctance motor includes:
a rotor 1 including a rotor body 11, and a plurality of rotor salient poles 12 projecting radially outward from the rotor body 11; and
the noise reduction part 13 is arranged between two adjacent rotor salient poles 12, the inner end of the noise reduction part 13 in the radial direction is provided with a first clamping part 133, and a second clamping part 121 matched with the first clamping part 133 is formed at the inner end of the noise reduction part 13 in the radial direction between the two adjacent rotor salient poles 12; wherein,
the noise reducing member 13 has a noise reducing arc 132a at an outer end in the radial direction, and the noise reducing arc 132a fills a space between two adjacent rotor salient poles 12 at the outer end in the radial direction.
It can be understood that the noise reduction part 13 is arranged between two adjacent rotor salient poles 12 to effectively fill the gap between the two adjacent rotor salient poles 12, and then the condition that the air flow passes through the gap between the two adjacent rotor salient poles 12 to cause stirring is relieved, particularly, the outer end of the noise reduction part 13 is arranged in an arc shape, so as to ensure smooth and smooth outer periphery of the noise reduction part 13, and avoid new noise caused by introducing the noise reduction part 13 and more edges and corners of the outer periphery of the noise reduction part 13. In addition, because the rotor 1 has a fast rotation speed in the rotation process, if the rotor is only fixed between the salient poles 12 of the rotor by the elasticity of the material of the noise reduction piece 13, there is a risk of being thrown out, therefore, in the technical scheme of the embodiment, the noise reduction piece 13 and the two corresponding salient poles 12 of the rotor are provided with mutually adaptive clamping parts, so as to effectively improve the reliability of the assembly between the noise reduction piece 13 and the rotor; of course, glue can be applied between the noise reduction piece 13 and the rotor salient pole 12 to better ensure that the noise reduction piece 13 is firmly installed.
It should be noted that the number of the noise reducing pieces 13 is not limited in the present invention, that is, the noise reducing pieces 13 may be disposed between any two adjacent rotor salient poles 12 of the rotor 1 one by one, or may be disposed only between some two adjacent rotor salient poles 12, as long as the normal operation of the rotor 1 is not affected. In addition, the spacing slots between two adjacent rotor salient poles 12 may be completely filled with the noise reducer 13, or may be only partially filled with the noise reducer 13, and the present design is not limited thereto.
According to the technical scheme, the noise reduction piece 13 is introduced into the switched reluctance motor, the noise reduction piece 13 is arranged between two adjacent rotor salient poles 12 of the rotor 1, adaptive clamping parts are arranged between the inner ends of the noise reduction piece and the rotor salient poles 12, and the outer ends of the noise reduction piece are provided with noise reduction cambered surfaces 132a which fill the interval between the two adjacent rotor salient poles 12, so that the noise problem caused by airflow stirring existing in grooves between the rotor salient poles 12 when the rotor rotates 1 is effectively solved, and the working noise of the switched reluctance motor is reduced. Especially to the intelligent cooking equipment who disposes switched reluctance motor, this technical scheme has reduced switched reluctance motor's noise at work, has effectively reduced the holistic noise at work of intelligent cooking equipment promptly, so, can improve intelligent cooking equipment's user experience greatly.
Optionally, the noise reduction arc surface 132a is flush with the end surfaces of two adjacent rotor salient poles 12 and has a uniform curvature; it can be understood that, with this arrangement, the outer periphery of the gap between two adjacent rotor salient poles 12 is filled, and the smoothness of the outer peripheral structure is ensured, so that the generation of sharp noise can be avoided to the greatest extent. Without loss of generality, when the noise reduction piece 13 is arranged between any two adjacent rotor salient poles 12, each noise reduction cambered surface 132a is connected with the end surface of the rotor salient pole 12 to form a complete circumferential cambered surface, so that the noise of the rotor 1 in the rotating process can be reduced to the maximum extent. It should be noted that, the design is not limited to this, and in other embodiments, the noise reduction arc surface 132a may also be recessed relative to the end surfaces of two adjacent rotor salient poles 12.
In consideration of the material selection, structural design and other factors of the noise reduction piece 13, the inventor proposes the following two embodiments, and further introduces the technical scheme of the invention:
referring to fig. 3 to 6, in the first embodiment, the noise reducer 13 includes a support portion 131 extending in the radial direction, and an arc portion 132 connected to an outer end of the support portion 131, an outer side surface of the arc portion 132 forms a noise reduction arc 132a, and an inner end of the support portion 131 forms a first catching portion 133. Without loss of generality, the cross section of the noise reduction piece 13 is shaped like an I or T.
In this embodiment, the noise reducer 13 is made of a plastic material; it is easy to understand that the plastic product has the advantages of low cost, various designs, good elasticity, etc., and when applied to the noise reduction member 13 of the present invention, the present invention is favorable for reducing the production cost of the noise reduction member 13, and can better improve the reliability of the assembly of the noise reduction member 13 by utilizing the elasticity of the plastic product. It should be noted that the design is not limited to this, and in other embodiments, the noise reduction element 13 may also be made of other materials.
It is easy to understand that, during the continuous operation of the motor, a large amount of heat is generated, in order to improve the heat dissipation performance of the noise reducer 13, in this embodiment, a plurality of heat dissipation ventilation slots 135 are provided on the noise reducer 13, for example, but not limited to, two sides of the supporting portion 131 along the circumferential direction are respectively provided with one heat dissipation ventilation slot 135, and the heat dissipation ventilation slots 135 axially penetrate through the noise reducer 13; it can be understood that, with this arrangement, during the rapid rotation of the rotor 1, air flow always passes through the heat dissipation ventilation slots 135 to take away heat, thereby achieving the heat dissipation effect. It should be noted that the design is not limited thereto, and in other embodiments, the heat dissipation ventilation slots 135 may be specifically disposed at other positions on the noise reducer 13.
In this embodiment, the supporting portion 131 has connecting side surfaces 136 respectively facing an adjacent rotor salient pole 12, the two connecting side surfaces 136 extend away from each other from the radial inner side to the outer side, the first engaging portion 133 is an engaging protrusion at least disposed on one connecting side surface 136, and the second engaging portion 121 is an engaging groove adapted to the engaging protrusion. Specifically, the inner ends of the two connecting side surfaces 136 respectively deviate from each other and extend to form a clamping protrusion, the inner ends of the two rotor salient poles 12 respectively extend to form a limiting block, and a clamping groove matched with the clamping protrusion is formed between the limiting block and the circumferential surface of the rotor body 11; it can be understood that, with such an arrangement, when the noise reduction piece 13 is assembled relative to the rotor 1, the noise reduction piece 13 is aligned between two adjacent rotor salient poles 12 and inserted in the axial direction, so that the operation is convenient and the fixation is reliable. It should be noted that, the design is not limited thereto, and in other embodiments, the first clamping portion 133 is a clamping groove at least disposed on one connecting side surface 136, and the second clamping portion 121 is a clamping protrusion adapted to the clamping groove.
In this embodiment, a plurality of noise reducing members 13 are disposed one by one between two adjacent rotor salient poles 12, and the noise reducing members 13 are connected by a connecting ring 134, and the connecting ring 134 is located at one end of each noise reducing member 13 along the axial direction of the rotor to form a noise reducing ring together. It can be understood that, with such an arrangement, on one hand, the probability that scattered noise reduction pieces 13 are lost in the storage process is easily reduced, and on the other hand, the overall structural strength of each noise reduction piece 13 is also improved. Without loss of generality, the connection ring 134 further has a plurality of heat dissipation openings 134a arranged in a ring shape (the outer edge of the heat dissipation opening 134a is flush with the inner side of the arc-shaped portion 132, and the inner edge of the heat dissipation opening 134a is flush with the outer side of the clamping protrusion), so as to better improve the heat dissipation performance of the noise reduction structure. Particularly, the two surfaces of each arc-shaped portion 132, which are oppositely arranged along the axial direction, are provided with dispensing slots 132b, so that when the rotor 1 shakes left and right in the production test process, the dynamic balance of the rotor can be realized by dispensing in the dispensing slots 132b of the corresponding noise reducing members 13. It should be noted that, the design is not limited to this, and in other embodiments, the dispensing groove 132b may be only disposed on one surface of the arc portion 132 in the axial direction, or disposed at other positions of the noise reduction element 13.
Referring to fig. 7 and 8, in the second embodiment, the noise reduction member 13 is configured in an arc block shape, and includes a noise reduction arc surface 132a and two connection side surfaces 136 respectively connected to two ends of the noise reduction arc surface 132a in the extending direction, the two connection side surfaces 136 extend from the radial outer side to the inner side, and the inner end of at least one connection side surface 136 is provided with a first clamping portion 133.
In this embodiment, the noise reduction member 13 is made of a metal material; it is easy to understand that the metal material product has the advantages of good thermal conductivity, high structural strength and the like, and is applied to the noise reduction part 13 of the present invention, which is beneficial to improving the heat dissipation performance and the self structural strength of the noise reduction part 13. For example, but not limited to, the noise reducer 13 is made of an aluminum material, so that the self weight of the noise reducer 13 can be effectively reduced while the heat dissipation and the structural strength are ensured. It should be noted that the design is not limited to this, and in other embodiments, the noise reduction element 13 may also be made of other materials.
It is easy to understand that, during the continuous operation of the motor, a large amount of heat is generated, and in order to better enhance the heat dissipation performance of the noise reducer 13, in this embodiment, the noise reducer 13 is provided with a plurality of heat dissipation ventilation slots 135, for example, but not limited to, the middle portion of the noise reducer 13 is provided with a heat dissipation ventilation slot 135, the heat dissipation ventilation slot 135 axially penetrates through the noise reducer 13, and the two connecting side surfaces 136 are respectively abutted against the rotor salient poles 12 facing thereto. It can be understood that, with such an arrangement, in the process of the rotor 1 rotating rapidly, the air flow always passes through the heat dissipation ventilation slots 135 to take away the heat on the noise reduction piece 13, so as to achieve the heat dissipation effect, and the connection side 136 is tightly abutted to the rotor salient pole 12, so that the heat of the rotor can be more rapidly conducted to the noise reduction piece 13, and the heat dissipation of the rotor is accelerated. It should be noted that the design is not limited thereto, and in other embodiments, the heat dissipation ventilation slots 135 may be specifically disposed at other positions on the noise reducer 13.
In this embodiment, the first engaging portion 133 is at least a slot disposed on one of the connecting side surfaces 136, and the second engaging portion 121 is a protrusion adapted to the slot; specifically, a clamping groove is formed at each of the two connecting side surfaces 136 near the inner end, and a clamping protrusion adapted to the clamping groove is formed at each of the two adjacent rotor salient poles 12 near the inner end. It can be understood that, with such an arrangement, when the noise reduction piece 13 is assembled relative to the rotor, the noise reduction piece 13 is aligned between two adjacent rotor salient poles 12 and inserted in the axial direction, so that the operation is convenient and the fixation is reliable. Without loss of generality, in order to better improve the reliability of the noise reducer 13 assembled between the two rotor salient poles 12, a plurality of clamping convex ribs 136a extending along the axial direction are arranged on the connecting side surface 136 at intervals, in the process that the noise reducer 13 is inserted between the two rotor salient poles 12, each clamping convex rib 136a generates deformation so as not to interfere the insertion of the noise reducer 13, and after the noise reducer 13 is completely inserted, the restoring force of each clamping convex rib 136a enables the clamping convex rib to be tightly abutted against the side surface of the rotor salient pole 12, so that the friction force between the noise reducer 13 and the rotor salient pole 12 is increased. It should be noted that the design is not limited thereto, the first clamping portion 133 is a clamping protrusion at least disposed on one connecting side surface 136, and the second clamping portion 121 is a clamping groove adapted to the clamping protrusion.
In this embodiment, the noise reducing members 13 are disposed one by one between two adjacent rotor salient poles 12, and the two surfaces of the noise reducing members 13 disposed opposite to each other along the axial direction are provided with dispensing slots 132b, so that when the rotor 1 is unbalanced in rotation due to uneven circumferential stress, fine adjustment of the circumferential stress of the rotor can be performed by dispensing in the dispensing slots 132b of the corresponding noise reducing members 13, thereby ensuring normal operation thereof. It should be noted that the design is not limited to this, and in other embodiments, the dispensing groove 132b may be only disposed on one surface of the noise reducer 13 along the axial direction.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A switched reluctance machine, comprising:
a rotor including a rotor body, and a plurality of rotor salient poles protruding radially outward from the rotor body; and
the noise reduction piece is arranged between two adjacent rotor salient poles, the inner end of the noise reduction piece in the radial direction is provided with a first clamping part, and a second clamping part matched with the first clamping part is formed at the inner end of the noise reduction piece in the radial direction between the two adjacent rotor salient poles; wherein,
the outer end of the noise reduction piece in the radial direction is provided with a noise reduction cambered surface, and the noise reduction cambered surface fills the interval between the two adjacent rotor salient poles in the outer end in the radial direction.
2. The switched reluctance machine of claim 1, wherein the noise reduction contour is flush with and has a uniform curvature with end faces of the two adjacent rotor salient poles.
3. The switched reluctance machine of claim 1, wherein the noise reducer further has connection sides each disposed facing one of the adjacent rotor salient poles, the connection sides extending away from each other from a radially inner side toward an outer side;
the first clamping part is at least a clamping groove arranged on one connecting side surface, and the second clamping part is a clamping protrusion matched with the clamping groove; or
The first clamping portion is at least arranged on one of the clamping protrusions on the connecting side face, and the second clamping portion is matched with the clamping groove of the clamping protrusion.
4. The switched reluctance machine of claim 1, wherein at least one of the two axially opposite surfaces of the noise reducer has a dispensing slot.
5. The switched reluctance machine of any one of claims 1 to 4, wherein the noise reduction member is provided with a plurality of heat dissipation ventilation grooves extending therethrough in an axial direction.
6. The switched reluctance motor of claim 5, wherein the noise reduction member is made of plastic material, and the noise reduction member is provided with one of the heat dissipation ventilation slots along both sides of the circumferential direction.
7. The switched reluctance machine of claim 6, wherein the noise reducing members are provided in plurality, one between each two adjacent rotor salient poles, and the noise reducing members are connected by a connecting ring.
8. The switched reluctance machine of claim 5, wherein the noise reducer is made of a metal material, the noise reducer has the heat dissipation ventilation slots in a middle portion thereof, and the two connection sides are respectively abutted against the rotor salient poles facing thereto.
9. The switched reluctance machine of claim 8 wherein the connecting sides have a plurality of axially extending snap ribs spaced apart.
10. An intelligent cooking device, comprising a base and a stirring container arranged on the base, wherein the switched reluctance motor as claimed in any one of claims 1 to 9 is arranged in the base.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675897.0A CN112290704A (en) | 2019-07-25 | 2019-07-25 | Switched reluctance motor and intelligent cooking equipment |
| PCT/CN2020/070426 WO2021012636A1 (en) | 2019-07-25 | 2020-01-06 | Switched reluctance motor and intelligent cooking apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675897.0A CN112290704A (en) | 2019-07-25 | 2019-07-25 | Switched reluctance motor and intelligent cooking equipment |
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| CN112290704A true CN112290704A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910675897.0A Pending CN112290704A (en) | 2019-07-25 | 2019-07-25 | Switched reluctance motor and intelligent cooking equipment |
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| Country | Link |
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| CN (1) | CN112290704A (en) |
| WO (1) | WO2021012636A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101185353B1 (en) * | 2006-09-21 | 2012-09-21 | 엘지전자 주식회사 | Stator for electric motor and manufacturing method thereof |
| CN103151893A (en) * | 2013-02-02 | 2013-06-12 | 宋社民 | Noise-reduction switched reluctance motor |
| CN207200415U (en) * | 2017-09-06 | 2018-04-06 | 山东科技大学 | A kind of novel switched reluctance motor structure |
| CN208608800U (en) * | 2018-09-14 | 2019-03-15 | 江苏雷利电机股份有限公司 | A kind of switch reluctance machine rotor |
| CN209948811U (en) * | 2019-07-25 | 2020-01-14 | 深圳厨艺科技有限公司 | Switched reluctance motor and intelligent cooking equipment |
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2019
- 2019-07-25 CN CN201910675897.0A patent/CN112290704A/en active Pending
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- 2020-01-06 WO PCT/CN2020/070426 patent/WO2021012636A1/en active Application Filing
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| WO2021012636A1 (en) | 2021-01-28 |
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