CN217656479U - Motor, compressor and refrigerator - Google Patents
Motor, compressor and refrigerator Download PDFInfo
- Publication number
- CN217656479U CN217656479U CN202221795279.3U CN202221795279U CN217656479U CN 217656479 U CN217656479 U CN 217656479U CN 202221795279 U CN202221795279 U CN 202221795279U CN 217656479 U CN217656479 U CN 217656479U
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- tooth
- magnetic
- electric machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The application provides a motor, a compressor and a refrigerator. The motor comprises a stator and a rotor, the stator comprises a stator core, the stator core comprises a stator yoke and a plurality of stator teeth, a stator slot is formed between every two adjacent stator teeth at intervals, the rotor comprises a rotor yoke and a magnetic shoe, and the diameter of the bottom of the stator slot is A 1 The diameter of the inner surface of the stator teeth is A 2 And satisfies the following conditions: 5X A 1 ≤A 2 ≤6*A 1 And the circle center of the inner surface of the stator tooth is positioned at the stator toothThe center of the inner surface of the stator is connected with the center of the inner hole of the stator on an extension line of a connecting line. The application provides a motor, through setting up the diameter A2 of the internal surface of stator tooth to 5 to 6 times of the tank bottom diameter A1 of stator groove to make the centre of a circle of the internal surface of stator tooth be in the center of the internal surface of stator tooth and the extension line of the centre of a circle line of stator hole, in order to promote magnetic field regulation ability, reduce the harmonic, especially when using in the compressor of refrigerator, can be when the operation under the higher efficiency operating mode, the noise of operation is lower.
Description
Technical Field
The application belongs to the technical field of household appliances, and particularly relates to a motor, a compressor and a refrigerator.
Background
Because the domestic occasion, the requirement compressor operates steadily, and the noise is little, and is efficient, the energy efficiency relative altitude. Along with the market demand of the compressor of the inverter refrigerator, the performance requirement of the motor in the compressor of the refrigerator is higher and higher. However, in the current compressor motors, a general motor satisfying the size and power of the compressor is mostly used. The motors are designed without considering the use conditions of the refrigerator compressor, and the motors are usually used in the refrigerator compressor by adopting a regular magnetic shoe structure of a stator core and a rotor, so that the problems of low efficiency and high noise exist.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a motor, a compressor and a refrigerator, so as to solve the problem that the motor in the prior art is used in the refrigerator compressor by adopting a regular magnetic shoe structure of a stator core and a rotor, and has low efficiency and large noise.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the stator comprises a stator core and a rotor, the stator core comprises a stator yoke and a plurality of stator teeth connected into the stator yoke, a stator slot is formed between every two adjacent stator teeth at intervals, and a stator inner hole is formed by encircling the plurality of stator teeth; the rotor is arranged in the stator inner hole in a rotating mode, the rotor comprises an annular rotor yoke and magnetic shoes arranged on the rotor yoke, the inner surface of each stator tooth is an arc surface, and the diameter of the bottom of each stator groove is A 1 The diameter of the inner surface of the stator tooth is A 2 And satisfies the following conditions: 5X A 1 ≤A 2 ≤6*A 1 And the circle center of the inner surface of the stator tooth is positioned on an extension line of a connecting line of the center of the inner surface of the stator tooth and the circle center of the inner hole of the stator.
In an optional embodiment, one surface of the magnetic shoe, which faces away from the rotor yoke, forms a magnetic shoe outer surface, and the magnetic shoe outer surface comprises a circular arc surface section and plane sections located at two ends of the circular arc surface section.
In an optional embodiment, the number of the magnetic tiles is six, the six magnetic tiles are uniformly distributed on the periphery of the rotor yoke, and the magnetizing directions of two adjacent magnetic tiles are opposite.
In an alternative embodiment, each of the planar segments is perpendicular to a radial direction of the rotor, and a distance G is provided between two of the planar segments opposite to each other in the radial direction of the rotor 1 The diameter of the arc surface section is F 1 And satisfies the following conditions: 0.5A 1 ≤F 1 ≤0.7*A 1 ，0.55*A 1 ≤G 1 ≤0.59*A 1 ,F 1 >G 1 。
In an alternative embodiment, a face of the magnetic shoe facing the rotor yoke forms a magnetic shoe inner surface, the magnetic shoe inner surface is a flat surface, and the rotor yoke has a mounting flat surface for cooperatively supporting the magnetic shoe inner surface.
In an alternative embodiment, the distance between the inner surfaces of two magnetic shoes which are opposite along the radial direction of the rotor is G 2 The inner diameter of the rotor yoke is F 2 And satisfies: 0.4 x A 1 ≤G 2 ≤0.5*A 1 ，0.5*G 2 ≤F 2 ≤0.6*G 2 。
In an alternative embodiment, the circumferential angle E of the magnetic shoes in the circumferential direction of the rotor yoke is in the range 51 DEG-E59 deg.
In an alternative embodiment, a positioning protrusion is convexly provided on the circumferential side of the rotor yoke between two adjacent magnetic tiles, a positioning groove is formed between two adjacent positioning protrusions, and the magnetic tiles are installed in the corresponding positioning grooves.
In an alternative embodiment, the width of the stator teeth is D, and satisfies: 0.1A 1 ≤D≤0.15*A 1 。
In an alternative embodiment, two opposite sides of each stator tooth are respectively provided with a tooth shoe, and two adjacent stator teeth are provided with a tooth shoeStator notches are formed between the adjacent tooth shoes, and the width of each stator notch is C 1 The width of the tooth boot is C 2 And satisfies: 0.1 x D ≤ C 2 ≤0.2*D；C 2 ≤C 1 ≤2*C 2 。
In an alternative embodiment, the distance between two adjacent magnetic tiles is H, and satisfies: 0.5C 1 ≤H≤0.6*C 1 。
It is another object of this embodiment of this application to provide a compressor including the motor as described in any one of the above embodiments.
Another object of the embodiments of the present application is to provide a refrigerator including a compressor as described in the above embodiments.
The motor that this application embodiment provided has: compared with the prior art, the motor of the embodiment of the application has the advantages that the diameter A2 of the inner surface of the stator tooth is set to be 5-6 times of the diameter A1 of the bottom of the stator slot, the circle center of the inner surface of the stator tooth is located on the extension line of the connecting line of the center of the inner surface of the stator tooth and the circle center of the inner hole of the stator, so that the magnetic field adjusting capacity is improved, the harmonic wave is reduced, the pulsating torque is reduced, the noise is reduced, in addition, the shape of the inner hole of the stator can be limited, the rotor is convenient to install, and when the motor is particularly applied to a compressor of a refrigerator, the motor can operate under the working condition with higher efficiency and the operating noise is lower.
The beneficial effect of the compressor that this application embodiment provided lies in: compared with the prior art, the compressor of this application embodiment has used the motor of above-mentioned embodiment, has the technological effect of above-mentioned motor to can more adapt to the compressor and use, with the efficiency that promotes the compressor.
The refrigerator that this application embodiment provided has: compared with the prior art, the refrigerator of the embodiment of the application uses the compressor of the embodiment, further uses the motor of the embodiment, has the technical effect of the motor, and is not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or exemplary technical descriptions will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings may be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front view of a motor according to an embodiment of the present disclosure;
fig. 2 is a schematic front view of a stator core according to an embodiment of the present disclosure;
fig. 3 is a schematic front view of a rotor according to an embodiment of the present disclosure.
Wherein, in the drawings, the reference numerals are mainly as follows:
100-a motor;
10-a stator; 11-a stator core; 111-stator teeth; 112-stator yoke; 113-stator slots; 114-a tooth shoe; 115-stator slots; 116-a stator bore; 117-mounting holes;
20-a rotor; 21-magnetic shoe; 211-the outer surface of the magnetic shoe; 2111-arc surface segment; 2112-plane section; 212-inner surface of magnetic shoe; 22-rotor yoke; 221-positioning convex; 23-rotating shaft.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to an orientation or positional relationship that is indicated in the drawings for convenience in describing the application and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in an operation, and is not to be construed as limiting the application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 and 3, a motor 100 provided herein will now be described. The motor 100 comprises a stator 10 and a rotor 20, wherein the rotor 20 is installed in the stator 10 to drive the rotor 20 to rotate through the stator 10, and wherein:
the stator 10 includes a stator core 11, the stator core 11 includes a stator yoke 112 and a plurality of stator teeth 111, each stator tooth 111 is disposed on the stator yoke 112, each stator tooth 111 is supported by the stator yoke 112, and the plurality of stator teeth 111 surround a stator inner hole 116. Stator core 11 can use a plurality of stator punching preparation, and a plurality of stator punching are range upon range of the setting, and a plurality of stator punching are range upon range of continuous like this to form stator core 11, promote the magnetic permeability, reduce the iron loss. Each stator punching sheet is provided with a plurality of tooth parts, a slot part is formed between every two adjacent tooth parts, thus the plurality of stator punching sheets are laminated and connected to form the stator core 11, the tooth parts of the plurality of stator punching sheets are laminated to form the stator teeth 111, and the stator slots 113 are formed between every two adjacent stator teeth 111 at intervals so as to wind the windings on the stator teeth 111 of the stator core 11.
Generally, the size of the stator lamination determines the size of the stator core 11, that is, the length of the stator lamination determines the length of the stator core 11, that is, the length of the stator core 11 is equal to the length of the stator lamination. The width of the stator punching sheet determines the width of the stator core 11, that is, the width of the stator core 11 is equal to the width of the stator punching sheet.
The stator punching sheet is generally made of silicon steel sheets, and a plurality of stator punching sheets are connected in a laminated mode to form a stator core 11, so that good magnetic permeability is guaranteed, iron loss is reduced, and the efficiency of manufacturing the motor 100 is improved.
The rotor 20 includes a rotor yoke 22 and a plurality of magnetic shoes 21, the rotor yoke 22 is disposed annularly, the plurality of magnetic shoes 21 are disposed on the rotor yoke 22 to support the magnetic shoes 21 through the rotor yoke 22, and a magnetic field is generated through the magnetic shoes 21, so that the magnetic shoes 21 are driven by the excitation of the stator 10 to rotate the rotor 20.
The bottom of the stator slot 113 designates the subslot 113 as being close to the bottom of the stator yoke 112, and also designates the subslot 113 as being close to the stator yoke 112, the bottom diameter of the stator slot 113 being a 1 Inner surface of stator teeth 111Is a circular arc surface, and the diameter of the inner surface of the stator tooth 111 is A 2 And satisfies the following conditions: 5X A 1 ≤A 2 ≤6*A 1 And the center of the inner surface of the stator tooth 111 is located on an extension line connecting the center of the inner surface of the stator tooth 111 and the center of the stator inner hole 116. The center of the inner surface of stator tooth 111 refers to the center of the arc along the inner surface of stator tooth 111, i.e., the diameter A of the inner surface of stator tooth 111 2 The diameter A of the slot bottom of the stator slot 113 1 And one diameter passing through the center of the inner surface of the stator teeth 111 passes through the center of the stator inner hole 116, so that the magnetic field intensity on two sides of the stator teeth 111 is more uniform, and two sides of the inner surface of the stator teeth 111 are opposite to the rotor 20 relative to the middle of the inner surface of the stator teeth 111, thereby improving the magnetic field regulation capacity, reducing harmonic waves and reducing the pulsation torque, and particularly when the motor 100 is applied to a refrigerator compressor, because the common rotating speed of the motor 100 in the refrigerator compressor is about 1600 rpm, the motor 100 can operate under the working condition with higher efficiency, and the operating noise is lower. In addition, because the plurality of stator teeth 111 define the stator bore 116, the diameter A of the inner surface of the stator teeth 111 is reduced 2 The groove bottom diameter A of the stator groove 113 is set 1 5 to 6 times, may also facilitate mounting of the rotor 20.
Compared with the prior art, the motor 100 of the embodiment of the present application is provided by setting the diameter a of the inner surface of the stator teeth 111 2 The groove bottom diameter A of the stator groove 113 is set 1 And the center of the inner surface of the stator tooth 111 is positioned on an extension line of a connecting line of the center of the inner surface of the stator tooth 111 and the center of the inner hole 116 of the stator, so that the magnetic field adjusting capacity is improved, the harmonic wave is reduced, the pulsating torque is reduced, and the noise is reduced.
In one embodiment, referring to fig. 1 to 3, the width of the stator tooth 111 is D and satisfies: 0.1A 1 ≤D≤0.15*A 1 That is, of stator teeth 111The width D is the bottom diameter A of the stator slot 113 1 0.1 to 0.15 times, can guarantee the structural strength of stator tooth 111, avoid stator yoke 112's magnetic field oversaturation to lower in advance, with the preparation of stator slot 113 area great, promote the area of stator slot 113 to reduce the phase current of stator 10, so that more multiturn coil is wound, with the magnetic field intensity that promotes stator 10, promote the magnetic field utilization ratio, promote the power of preparation motor 100, promote the efficiency of motor 100.
In one embodiment, referring to fig. 1 to 3, the four corners of the stator core 11 are respectively provided with mounting holes 117, so that a plurality of stator laminations can be stacked, connected and fixed by using a connection structure such as bolts to form the stator core 11. In addition, the structure can also facilitate the installation and fixation of the stator 10, such as the use of connecting structures such as bolts, etc., passing through the installation hole 117 to be fixed in the casing of the compressor, and further, the stator 10 can be installed and fixed for convenient use.
In one embodiment, referring to fig. 1 and 3, the rotor 20 further includes a rotating shaft 23, the rotor yoke 22 is sleeved on the rotating shaft 23, the rotor yoke 22 is supported by the rotating shaft 23, and power is output through the rotating shaft 23.
In one embodiment, referring to fig. 1 and 3, the rotor yoke 22 may be stacked by using a plurality of rotor sheets, so that the rotor yoke 22 may have better magnetic conductivity and reduce iron loss.
In one embodiment, referring to fig. 1 to 3, the two opposite sides of the stator teeth 111 are respectively provided with a tooth shoe 114, so as to make the magnetic field distribution of the stator 10 more uniform, reduce harmonics, reduce loss, and improve efficiency.
In one embodiment, referring to fig. 1 to 3, a stator slot 115 is formed between two adjacent tooth shoes 114 of two adjacent stator teeth 111, and the width of the stator slot 115 is C 1 Width of tooth shoe 114 is C 2 Width C of tooth shoe 114 2 Refers to the width of the tooth shoe 114 along the radial direction of the rotor 20, the intersection of the tooth shoe 114 and the stator teeth 111 to the width of the tip of the tooth shoe 114 along the radial direction of the stator inner hole 116, and satisfies: 0.1 x D ≤ C 2 ≤0.2*D；C 2 ≤C 1 ≤2*C 2 . 0.1 x D is less than or equal to C 2 Less than or equal to 0.2 x D, alsoThat is, the width C of the tooth shoe 114 2 Is 0.1 to 0.2 times the width D of the stator teeth 111, the structural strength of the tooth shoes 114 can be ensured, and the magnetic field strength on the tooth shoes 114 can be made more uniform, avoiding magnetic field oversaturation. To mix C 2 ≤C 1 ≤2*C 2 That is, the width C of the stator slot 115 1 Greater than or equal to the width C of the tooth shoe 114 2 The winding of the wire from the stator slot 115 onto the stator teeth 111 may be facilitated; width C of stator slot 115 1 Less than or equal to the width C of the tip of the tooth shoe 114 2 The magnetic field leakage can be reduced by 2 times, the efficiency is improved, the harmonic wave is reduced, and the pulsation torque is reduced.
In one embodiment, referring to fig. 1-3, the width B of the stator core 11 1 In the range of 95mm or less B 1 Less than or equal to 115mm, e.g. B 1 Can be 95mm, 96mm, 97mm, 98mm, 99mm, 100mm, 101mm, 102mm, 103mm, 104mm, 105mm, 106mm, 107mm, 108mm, 109mm, 110mm, 111mm, 112mm, 113mm, 114mm, 115mm, etc. Length B of stator core 11 2 In the range of 100mm < B 2 Less than or equal to 120mm, e.g. B 2 Can be 100mm, 101mm, 102mm, 103mm, 104mm, 105mm, 106mm, 107mm, 108mm, 109mm, 110mm, 111mm, 112mm, 113mm, 114mm, 115mm, 116mm, 117mm, 118mm, 119mm, 120mm, and the like. And the width B of the stator core 11 1 Set less than or equal to length B of stator core 11 2 The stator core 11 and the stator 10 can be made smaller to miniaturize the motor 100 and facilitate the use of the compressor of the refrigerator.
In one embodiment, referring to fig. 1-3, the bottom diameter a of the stator slots 113 1 In the range of 90mm < A 1 Less than or equal to 110mm, e.g. A 1 Can be 90mm, 91mm, 92mm, 93mm, 94mm, 95mm, 96mm, 97mm, 98mm, 99mm, 100mm, 101mm, 102mm, 103mm, 104mm, 105mm, 106mm, 107mm, 108mm, 109mm, 110mm and the like, so that on the premise of ensuring the structural strength of the stator iron core 11, the depth of the stator slot 113 is made larger, the area of the stator slot 113 is increased, the magnetic field strength of the stator 10 is increased, and good copper loss and iron loss matching is keptIn contrast, the phase current of the stator 10 is reduced, improving the efficiency of the motor 100.
In one embodiment, referring to fig. 1 to fig. 3, the magnetic shoe 21 has a magnetic shoe outer surface 211, and the magnetic shoe outer surface 211 is a surface of the magnetic shoe 21 facing away from the rotor yoke 22, that is, a surface of the magnetic shoe 21 facing away from the rotor yoke 22 forms the magnetic shoe outer surface 211. The outer surface 211 of the magnet shoe defines the outer contour shape of the rotor 20. The outer surface 211 of the magnetic shoe comprises an arc surface section 2111 and two plane sections 2112, the two plane sections 2112 are positioned at two ends of the arc surface section 2111, and each plane section 2112 is connected with the arc surface section 2111, so that harmonic waves can be reduced, iron loss is reduced, the motor 100 can run more stably, running noise is reduced, and the use environment of the refrigerator compressor is better adapted.
In one embodiment, the outer surface 211 of the magnetic shoe is a symmetrical structure, the symmetrical plane is a plane where a diameter of the arc surface section 2111 is located, the diameter needs to pass through the center of the arc surface section 2111, and the center of the arc surface section 2111 is the center of the arc surface section 211 along the arc length direction, so that magnetic fields on two sides of the magnetic shoe 21 are more uniform, harmonics are reduced, and torque is reduced.
In one embodiment, referring to fig. 1 to fig. 3, a side of the magnetic shoe 21 facing the rotor yoke 22 forms a magnetic shoe inner surface 212, the magnetic shoe inner surface 212 is a plane, and the rotor yoke 22 has a mounting plane, and the mounting plane is used for supporting the magnetic shoe inner surface 212 in a matching manner to facilitate the mounting and fixing of the magnetic shoe 21. The inner surface 212 of the magnetic shoe is arranged to be a plane to facilitate processing and manufacturing, and the thicknesses of the two sides of the magnetic shoe 21 can be set to be smaller to reduce harmonic waves and reduce torque.
In one embodiment, the number of the magnet tiles 21 is six, and six magnet tiles 21 are uniformly distributed on the periphery of the rotor yoke 22, and the magnetizing directions of two adjacent magnet tiles 21 are opposite, such as the directions of the arrows in the magnet tiles 21 in fig. 1, so that the motor 100 forms six magnetic poles.
In one embodiment, each of the planar sections 2112 is perpendicular to the radial direction of the rotor 20, that is, when the magnetic shoe 21 is mounted on the rotor yoke 22, each of the planar sections 2112 of the magnetic shoe 21 is perpendicular to the radial direction of the rotor 20, and the distance between two opposing planar sections 2112 in the radial direction of the rotor 20 is G 1 Circle ofThe diameter of the cambered surface section 2111 is F 1 And satisfies the following conditions: 0.5A 1 ≤F 1 ≤0.7*A 1 ， 0.55*A 1 ≤G 1 ≤0.59*A 1 ,F 1 >G 1 . That is, the diameter F of the arc surface segment 2111 1 Is the groove bottom diameter A of the stator groove 113 1 0.5 times to 0.7 times, so that the air gap magnetic field of the motor 100 can be more sine wave, the harmonic wave is reduced, and the ripple torque is reduced. Distance G between two opposing planar segments 2112 1 The diameter A of the bottom of the stator slot 113 is defined as 1 0.55 to 0.59 times, and the diameter of the arc surface section 2111 is made to be F 1 Greater than the distance G between two opposing planar segments 2112 1 And the middle part of the magnetic shoe 21 is arranged in a protruding way towards the direction deviating from the rotor yoke 22, so that harmonic waves can be reduced, the pulsating torque is reduced, and the running noise is reduced.
In one embodiment, the diameter F of the arc surface segment 2111 1 Is the groove bottom diameter A of the stator groove 113 1 0.5 to 0.7 times, the distance G between two opposing planar segments 2112 1 The diameter A of the bottom of the stator slot 113 is defined as 1 0.55 to 0.59 times of and the diameter of the arc surface segment 2111 is F 1 Greater than the distance G between two opposing planar segments 2112 1 Diameter A of inner surface of stator tooth 111 2 The groove bottom diameter A of the stator groove 113 is set 1 5 to 6 times of (1), that is, 5 × a 1 ≤A 2 ≤6*A 1 ， 0.5*A 1 ≤F 1 ≤0.7*A 1 ，0.55*A 1 ≤G 1 ≤0.59*A 1 ,F 1 >G 1 The air gap between the rotor 20 and the stator 10 of the motor 100 can be made smaller, so that the air gap magnetic field of the motor 100 tends to a sine wave, harmonics are reduced, pulsation torque is reduced, torque is improved, and further the power and efficiency of the motor 100 are improved.
In one embodiment, the distance between the inner surfaces 212 of two magnetic shoes radially opposite along the rotor 20 is G 2 The rotor yoke 22 has an inner diameter F 2 And satisfies the following conditions: 0.4A 1 ≤G 2 ≤0.5*A 1 ，0.5*G 2 ≤F 2 ≤0.6*G 2 . Two oppositeDistance G between inner surfaces 212 of the magnetic shoes 2 Is the groove bottom diameter A of the stator groove 113 1 0.4 to 0.5 times, and the diameter F of the arc surface segment 2111 1 Is the groove bottom diameter A of the stator groove 113 1 0.4 to 0.5 times, the distance G between two opposing planar segments 2112 1 The diameter A of the bottom of the stator slot 113 is defined as 1 0.55 times to 0.59 times, the magnetic shoe 21 can have a certain thickness to ensure the structural strength of the magnetic shoe 21 and the rotor 20 has a large magnetic field strength, and also the magnetic field in the rotor yoke 22 can be prevented from being over saturated, the efficiency can be improved, and the pulsating torque can be reduced. Further, the inner diameter F of the rotor yoke 22 2 Is the distance G between the inner surfaces 212 of the two opposite magnetic shoes 2 0.5 times to 0.6 times, the rotor yoke 22 can have a certain thickness to ensure the structural strength of the rotor yoke 22, and the magnetic field in the rotor yoke 22 can be prevented from being oversaturated, thereby improving the efficiency and reducing the pulsating torque.
In one embodiment, the circumferential angle E of the magnetic shoe 21 along the circumferential direction of the rotor yoke 22 is also the angle of the magnetic shoe 21 in the circumferential direction of the rotor 20 in the rotor 20, and the circumferential angle E of each magnetic shoe 21 along the circumferential direction of the rotor yoke 22 is 51 ° or more and E ° or less and 59 ° or less, for example, the circumferential angle E of the magnetic shoe 21 along the circumferential direction of the rotor 20 is 51 °, 52 °, 53 °, 54 °, 55 °, 56 °, 57 °, 58 °, 59 °, or the like, so as to improve the magnetic field coverage of each magnetic shoe 21 on the circumferential side of the rotor 20, further improve the magnetic field utilization rate, make the magnetic field of the rotor 20 more sinusoidal, reduce the pulsating torque, improve the rotational inertia and the efficiency, and facilitate the installation.
In one embodiment, the distance between two adjacent magnetic tiles 21 is H, and satisfies: 0.5C 1 ≤H≤0.6*C 1 . That is, the distance H between two adjacent magnetic shoes 21 is the width C of the stator slot 115 1 E.g. the distance H between two adjacent magnetic shoes 21 is the width C of the stator slot 115 1 0.5 times, 0.51 times, 0.52 times, 0.53 times, 0.54 times, 0.55 times, 0.56 times, 0.57 times, 0.58 times, 0.59 times, 0.6 times and the like, not only facilitates the installation and the positioning of the magnetic tiles 21, but also can reduce the interpolar magnetic leakage, improve the utilization rate of a magnetic field and further improve the efficiency.
In an embodiment, referring to fig. 1, fig. 2 and fig. 3, a positioning protrusion 221 is convexly disposed between two adjacent magnetic tiles 21 on the circumferential side of the rotor yoke 22, a positioning groove (not labeled) is formed between two adjacent positioning protrusions 221, and the positioning groove is disposed, so that when the magnetic tiles 21 are mounted, the magnetic tiles 21 can be placed in the positioning groove to position the magnetic tiles 21, thereby facilitating the mounting and fixing of the magnetic tiles 21.
In one embodiment, when six magnet tiles 21 are provided and the rotor yoke 22 is provided with the mounting plane, the cross section of the rotor yoke 22 may be provided with a regular hexagon, and positioning protrusions 221 are protruded at each corner of the regular hexagon to mount the magnet tiles 21.
In one embodiment, the number of stator teeth 111 is 9 and the number of corresponding stator slots 113 is nine to form a nine slot stator core 11 for ease of use in a refrigerator compressor.
In one embodiment, referring to fig. 1, 2 and 3, nine stator slots 113 and six magnetic shoes 21 of the rotor 20 form a nine-slot six-pole motor 100, so that when the motor 100 is made smaller in size, the magnetic field utilization rate is improved, the supersaturation of the stator teeth 111 is avoided, and a better ratio of copper consumption to iron consumption is maintained, so as to increase the area of the stator slots 113, further reduce the phase current of the stator 10, and improve the efficiency of the motor 100 on the premise of ensuring higher efficiency, so as to be conveniently applied to a refrigerator compressor.
In one embodiment, the coils wound on the stator teeth 111 of the stator core 11 may be copper coils, and the coils are wound along the stator teeth 111 to ensure a larger magnetic field intensity of the stator 10.
The motor 100 structure of this application embodiment adopts the groove type structure of above-mentioned stator 10, can be when guaranteeing that motor 100 is miniaturized, and better utilization motor 100 magnetic field has avoided stator tooth 111 supersaturation phenomenon to more reasonable ratio motor 100 copper loss and iron loss, make motor 100 efficiency better, make the area of stator slot 113 bigger, stator 10 phase current is littleer, and the harmonic is littleer, and pulsation torque is lower, and the noise of operation is littleer. The motor 100 structure of the embodiment of the application adopts the magnetic shoe 21 structure, so that on the premise of meeting the requirement of process manufacturing, the magnetic field intensity can be better improved, the harmonic wave is reduced, the phase current of the stator 10 can be reduced under the condition of outputting the same electromagnetic torque, and the system efficiency is improved. In addition, the combination of the stator 10 and the rotor 20 can improve the magnetic field adjusting capability, better reduce harmonic waves and reduce the pulsating torque.
When the motor 100 of the embodiment of the application runs at a rotating speed of about 1600 rpm, the efficiency of the motor 100 can be improved by more than 1 percentage point compared with the traditional motor 100, the efficiency is integrally improved within the frequency control running range, and the torque pulse rate is reduced by 16 percentage points, so that the noise is improved, and therefore, the motor 100 of the embodiment of the application can be more suitable for being used in a refrigerator compressor.
The embodiment of the application also discloses a compressor. The compressor uses the motor 100 according to any of the above embodiments. The compressor uses the motor 100 of the above embodiment, has the technical effects of the motor 100, and can be more suitable for the compressor to use, so as to improve the efficiency of the compressor.
The embodiment of the application also discloses a refrigerator. The refrigerator includes the compressor as in the above embodiments. The refrigerator uses the compressor of the above embodiment, and further uses the motor 100 of the above embodiment, which has the technical effects of the motor 100, and is not described herein again.
The above description is intended only to serve as an alternative embodiment of the present application, and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.
Claims (13)
1. An electric machine comprises a stator and a rotor, wherein the stator comprises a stator core, the stator core comprises a stator yoke and a plurality of stator teeth connected into the stator yoke, a stator slot is formed between every two adjacent stator teeth at intervals, and a plurality of stator teeth surround to form a stator inner hole; the rotor rotates and arranges in the stator hole, the rotor is including being annular rotor yoke and locating magnetic shoe on the rotor yoke, its characterized in that: the diameter of the bottom of the stator slot is A 1 The inner surface of the stator tooth is a circular arc surface, and the diameter of the inner surface of the stator tooth is A 2 And is made ofSatisfies the following conditions: 5X A 1 ≤A 2 ≤6*A 1 And the circle center of the inner surface of the stator tooth is positioned on an extension line of a connecting line of the center of the inner surface of the stator tooth and the circle center of the inner hole of the stator.
2. The electric machine of claim 1, wherein: the magnetic shoe deviates from one side of the rotor yoke forms a magnetic shoe outer surface, and the magnetic shoe outer surface comprises an arc surface section and plane sections positioned at two ends of the arc surface section.
3. The electric machine of claim 2, wherein: the number of the magnetic shoes is six, the six magnetic shoes are evenly distributed on the periphery of the rotor yoke, and the magnetizing directions of the two adjacent magnetic shoes are opposite.
4. The electric machine of claim 3, wherein: each plane section is perpendicular to the radial direction of the rotor, and the distance between two opposite plane sections along the radial direction of the rotor is G 1 The diameter of the circular arc surface section is F 1 And satisfies the following conditions: 0.5A 1 ≤F 1 ≤0.7*A 1 ，0.55*A 1 ≤G 1 ≤0.59*A 1 ,F 1 >G 1 。
5. The electric machine of claim 4, wherein: one surface of the magnetic shoe facing the rotor yoke forms a magnetic shoe inner surface which is a plane, and the rotor yoke is provided with a mounting plane for supporting the magnetic shoe inner surface in a matching way.
6. The electric machine of claim 5, wherein: the distance between the inner surfaces of the two magnetic shoes which are opposite along the radial direction of the rotor is G 2 The inner diameter of the rotor yoke is F 2 And satisfies: 0.4 x A 1 ≤G 2 ≤0.5*A 1 ，0.5*G 2 ≤F 2 ≤0.6*G 2 。
7. The electric machine of claim 3, wherein: the circumferential angle E of the magnetic shoe along the circumferential direction of the rotor yoke is more than or equal to 51 degrees and less than or equal to 59 degrees.
8. The electric machine of any of claims 1-7, wherein: the periphery of the rotor yoke is convexly provided with positioning protrusions between every two adjacent magnetic shoes, positioning grooves are formed between every two adjacent positioning protrusions, and the magnetic shoes are installed in the corresponding positioning grooves.
9. The electric machine of any of claims 1-7, wherein: the width of stator tooth is D, and satisfies: 0.1A 1 ≤D≤0.15*A 1 。
10. The electric machine of claim 9, wherein: tooth shoes are respectively arranged on two opposite sides of each stator tooth, a stator notch is formed between every two adjacent tooth shoes on every two adjacent stator teeth, and the width of each stator notch is C 1 The width of the tooth boot is C 2 And satisfies the following conditions: 0.1 x D ≤ C 2 ≤0.2*D；C 2 ≤C 1 ≤2*C 2 。
11. The electric machine of claim 10, wherein: the distance between two adjacent magnetic shoes is H, and satisfies: 0.5C 1 ≤H≤0.6*C 1 。
12. A compressor, characterized by: comprising an electric machine according to any of claims 1-11.
13. A refrigerator, characterized in that: comprising a compressor as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221795279.3U CN217656479U (en) | 2022-07-11 | 2022-07-11 | Motor, compressor and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221795279.3U CN217656479U (en) | 2022-07-11 | 2022-07-11 | Motor, compressor and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217656479U true CN217656479U (en) | 2022-10-25 |
Family
ID=83687073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221795279.3U Active CN217656479U (en) | 2022-07-11 | 2022-07-11 | Motor, compressor and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217656479U (en) |
-
2022
- 2022-07-11 CN CN202221795279.3U patent/CN217656479U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102035336A (en) | Brushless direct current motor rotor | |
| CN115065181A (en) | Rotor assembly and motor | |
| CN217656479U (en) | Motor, compressor and refrigerator | |
| CN104158373A (en) | External rotor motor | |
| CN217656480U (en) | Motor, compressor and refrigerator | |
| WO2023184972A1 (en) | Motor rotor, motor, compressor, and air conditioner | |
| CN117424357A (en) | Motor, compressor and refrigerator | |
| CN217362674U (en) | Motor, compressor and refrigerator | |
| CN112769257B (en) | Halbach array square motor | |
| CN214506702U (en) | Rotor, motor and compressor | |
| CN2452202Y (en) | Sinusoidal permanent magnetic magnetodensi wave-shape permasyn motor | |
| CN210167872U (en) | Rotor, motor, compressor and refrigeration plant | |
| CN219643665U (en) | Motor, electric appliance and vehicle | |
| JP3096494U (en) | Home fan motor stator | |
| CN218733484U (en) | Rotor structure of low-speed motor based on 18-slot stator and low-speed motor | |
| CN213937559U (en) | Halbach array square motor | |
| CN113839481B (en) | Novel rhombus modulation pole vernier permanent magnet motor | |
| CN219145218U (en) | Outer rotor low noise brushless motor | |
| CN214850688U (en) | Motor, compressor and refrigeration plant | |
| CN220325485U (en) | Brushless motor | |
| CN210111726U (en) | Rotor, motor, compressor and refrigeration plant | |
| CN216146168U (en) | Rotor punching sheet structure | |
| CN116191700A (en) | Motor, electric appliance and vehicle | |
| CN112531938B (en) | Rotor core, rotor, motor, compressor and air conditioner | |
| CN214590794U (en) | Stator module, rotor assembly and central disc shaft core dual-rotor motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |