CN113872348B - Stator structure, motor structure, compressor structure and refrigeration equipment - Google Patents
Stator structure, motor structure, compressor structure and refrigeration equipment Download PDFInfo
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- CN113872348B CN113872348B CN202111198762.3A CN202111198762A CN113872348B CN 113872348 B CN113872348 B CN 113872348B CN 202111198762 A CN202111198762 A CN 202111198762A CN 113872348 B CN113872348 B CN 113872348B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 16
- 238000003475 lamination Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 14
- 238000004080 punching Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 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
- 239000000047 product Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Embodiments of the present application provide a stator structure, a motor structure, a compressor structure, and a refrigeration apparatus, wherein a stator core includes a stator yoke and a plurality of stator teeth extending radially inward from the stator yoke; the first groove is formed in the side wall of one side, far away from the axis of the stator core, of the stator yoke; the second groove is arranged in the first groove and extends from the bottom of the first groove towards the axis of the stator core; wherein the depth of the first groove is not more than half of the thickness of the stator yoke, and the depth of the second groove is not more than half of the thickness of the stator yoke. In the technical scheme of the application, the motor noise can be greatly improved, and particularly, the high-frequency carrier noise can be greatly reduced.
Description
Technical Field
The application relates to the technical field of motors, in particular to a stator structure, a motor structure, a compressor structure and refrigeration equipment.
Background
At present, noise is often generated during operation due to improper design, and particularly high-frequency noise of a modulation wave of an input current is obvious.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art or related art.
In view of this, embodiments of the first aspect of the present application provide a stator structure.
Embodiments of the second aspect of the present application provide a motor structure.
Embodiments of the third aspect of the present application provide a compressor structure.
Embodiments of the fourth aspect of the present application provide a refrigeration apparatus.
To achieve the above object, an embodiment of a first aspect of the present application provides a stator structure, including: a stator core including a stator yoke and a plurality of stator teeth extending radially inward from the stator yoke; the first groove is formed in the side wall of one side, far away from the axis of the stator core, of the stator yoke; the second groove is arranged in the first groove and extends from the bottom of the first groove towards the axis of the stator core; wherein the depth of the first groove is not more than half of the thickness of the stator yoke, and the depth of the second groove is not more than half of the thickness of the stator yoke.
The stator structure provided according to the embodiment of the first aspect of the present application includes a stator core and two kinds of grooves, specifically a first groove and a second groove, disposed on the stator core, and it is necessary to supplement that the stator core itself includes two kinds of conventional structures, namely, a stator yoke and stator teeth, and the positional relationship between the two is that the stator teeth are disposed on the radial inner side of the stator yoke, that is, the stator yoke extends radially inward to form the stator teeth. For the first groove and the second groove, the first groove is used as a groove-shaped foundation and is formed by inwards recessing the outer side wall of the stator yoke, namely, the side wall of one side far away from the axis of the stator core, and the second groove is continuously inwards recessed on the basis of the first groove, namely, the second groove extends from the groove bottom of the first groove towards the axis of the stator core, so that a two-layer groove superposition arrangement scheme is formed, on one hand, the noise can be inhibited, on the other hand, the motor efficiency can be ensured, and further, the depth of the first groove and the depth of the second groove are not more than half of the thickness of the stator yoke, so that the motor noise can be greatly improved, and particularly, the high-frequency carrier noise is greatly reduced.
The thickness of the stator yoke is the dimension of the stator yoke in the radial direction of the stator core.
The depth of the first groove is the dimension extending inwards along the radial direction from the outer edge of the stator core.
Further, since the second groove is formed to continue to extend inward on the basis of the first groove, the groove width of the second groove is generally not larger than the groove width of the first groove.
In the above technical solution, the second groove includes: a first slot and a second slot; the first slots and the second slots are arranged at intervals along the circumferential direction of the stator core, and projection contour lines of the first slots are different from those of the second slots on the end face of the stator core.
In this technical scheme, the second recess mainly includes two kinds of grooves, and the shape in two kinds of grooves is different, and the utensil is specifically that projection contour line is different on stator core's terminal surface, and the interval sets up between first groove and the second groove simultaneously, because do not communicate between first groove and the second groove, mutually independent to different first groove and second groove can combine together to form different groove structure with first recess respectively, and then can be very big under the combined action of first recess and second recess improvement at the high frequency carrier noise that appears in the operation in-process.
In the technical scheme, the first groove is a rectangular groove, and the second groove is an arc groove.
In the technical scheme, the first groove is limited to be a rectangular groove, and the second groove is an arc groove, so that the processing and manufacturing are facilitated by adopting a conventional structure.
Further, the number of rectangular grooves is not less than three, and the sum of the numbers of the arc grooves and the rectangular grooves is equal to the first groove.
In the above technical scheme, on the terminal surface of stator core, the projection contour line of first recess specifically includes: the groove bottom contour line and groove wall contour lines respectively connected with one end of the groove bottom contour line; wherein the other end of each slot wall contour extends to a side wall of the stator yoke away from the axis of the stator core.
In this technical scheme, to the first recess, restrict its shape, divide into tank bottom contour and two cell wall contour with the projection contour of first recess, can understand that the three-dimensional structure that the tank bottom contour corresponds is the tank bottom of first recess, and the three-dimensional structure that the cell wall contour corresponds is the cell wall that links to each other with the tank bottom, can form first recess through the combination.
It is emphasized that one end of the slot wall contour is connected to the slot bottom contour, but the other end extends directly to the outer wall of the stator yoke.
In the above technical solution, the included angle between the groove bottom contour line and any groove wall contour line is an obtuse angle.
In the technical scheme, the obtuse angle is formed between the groove bottom contour line and the groove wall contour line by limiting, so that the whole first groove is outward-expansion, and the effect of reducing the carrier frequency band sound in the operation process is more facilitated.
In the technical scheme, the included angle formed by connecting lines between two ends of the groove bottom contour line and the axis of the stator core is not more than 360 degrees/Q; where Q is the number of stator teeth.
In the technical scheme, the positions of the groove bottom contour lines are limited to correspond to the positions of the stator teeth, and the corresponding relation between the positions of the groove bottom contour lines and the positions of the stator teeth is that two ends of the groove bottom contour lines form a certain included angle relative to the axis of the stator core.
In the above technical scheme, the stator core specifically includes: the stator punching sheets are stacked along the axial direction of the stator core.
In the technical scheme, the stator core is formed by axially laminating a plurality of stator punching sheets, each stator punching sheet is provided with a stator yoke, stator teeth and winding grooves, the stator teeth are arranged on the stator yoke, and the winding grooves are formed between two adjacent stator teeth so that stator windings are wound on the winding grooves, and a magnetic field can be generated for a rotor to realize the stator effect.
Further, the stator punching sheet is made of a silicon steel sheet or other soft magnetic material sheet, and the thickness is not more than 0.35mm.
In the technical scheme, the depth of the first groove is not less than 0.2 times of the thickness of the stator yoke; the depth of the second groove is not less than 0.2 times the thickness of the stator yoke.
In the technical scheme, the depth lower limit value of the first groove and the second groove is 0.2 times of the thickness of the stator yoke, so that an effective noise reduction effect, especially a noise reduction effect for a high-frequency carrier wave, can be achieved in the working process.
An embodiment of the second aspect of the present application provides a motor structure, including the stator structure of any one of the above embodiments; and the rotor structure is coaxially arranged with the stator structure and comprises a rotor core and permanent magnets arranged on the rotor core.
The motor structure provided by the application comprises a stator structure and a rotor structure, wherein for a stator core, when a stator winding is arranged in a winding groove by winding a stator tooth, the motor structure can play a normal magnetic field driving role on the rotor structure, so that the rotation of the rotor structure is realized. Specifically, the rotor structure and the stator structure are coaxially arranged and mainly comprise a rotor iron core and a permanent magnet, and when the stator structure is electrified to generate a vector magnetic field, the magnetic piece can rotate under the magnetic action, so that the movement of the rotor structure is realized.
The axis of the stator core is collinear with the axis of the rotor core, and the stator teeth and the permanent magnets are all arranged around the axis and are generally uniformly arranged.
In the technical scheme, projection contour lines of the permanent magnets are symmetrical with respect to central axes of two adjacent stator teeth on the end face of the rotor core; wherein the permanent magnet comprises one or a combination of the following: straight line segment, curve segment.
In the technical scheme, the cross section shape of the permanent magnet is limited to be of a symmetrical pattern so as to facilitate processing and installation, and particularly, the permanent magnet comprises any combination of three shapes and can be a pure straight line segment, and in this case, under the condition of limited symmetry, the projection contour line of the permanent magnet is vertical to the central axis. In another case, the permanent magnet may be a symmetrical straight line segment, or may be understood as a broken line segment, where the probability of projecting the contour line is high, including but not limited to V-shape, W-shape, etc. In another case, the permanent magnet is a pure curve segment, and the permanent magnet still needs to maintain a symmetrical shape, which can be a single arc or a combination of multiple arcs.
Of course, a combination of curved and straight line segments may be used as long as the structure is symmetrical.
In the above technical solution, the relationship between the number Q of stator teeth and the pole pair number p of the permanent magnet and the phase number m of the motor structure is:
in the technical scheme, the number of the stator teeth is limited to be not more than 2 times of the product of the pole logarithm of the rotor and the phase number of the motor, so that the fractional slot motor is integrally formed, the higher harmonic potential generated by non-sinusoidal distribution of the magnetic pole magnetic field can be effectively weakened under the action of the fractional slot motor, the amplitude of the tooth harmonic potential can be weakened, and the waveform is improved. In addition, the motor with fractional slot can reduce the pulse amplitude value of magnetic flux effectively to reduce the pulse loss of magnetic pole surface.
An embodiment of a third aspect of the present application provides a compressor structure comprising: a housing; the motor structure according to the second aspect is disposed in the housing.
According to the compressor structure provided by the embodiment of the third aspect of the present application, the compressor structure comprises a housing and a motor structure arranged in the housing, and the motor structure in the second aspect is arranged in the compressor structure, so that the compressor structure has the beneficial effects of the motor structure and is not described herein.
An embodiment of a fourth aspect of the present application provides a refrigeration apparatus, comprising: a case; the compressor of the third aspect is provided in the casing.
According to the refrigeration equipment provided by the embodiment of the fourth aspect of the application, the refrigeration equipment comprises the box body and the compressor structure arranged in the box body, and the compressor structure in the third aspect is arranged in the refrigeration equipment, so that the refrigeration equipment has the beneficial effects of the compressor structure and is not repeated herein.
Among them, the refrigerating apparatus includes, but is not limited to, apparatuses having a refrigerating function such as a refrigerator, a freezer, an air conditioner, and the like.
Additional aspects and advantages of the application will be set forth in part in the description which follows, or may be learned by practice of the application.
Drawings
Fig. 1 shows a schematic structural view of a stator structure according to an embodiment of the present application;
FIG. 2 shows a schematic structural view of a motor structure according to one embodiment of the application;
FIG. 3 shows a partial structural schematic of a stator structure according to one embodiment of the application;
fig. 4 shows a schematic structural view of a stator core according to an embodiment of the present application;
fig. 5 shows a schematic structural view of a rotor core according to an embodiment of the present application;
FIG. 6 shows a schematic structural diagram of a motor structure according to one embodiment of the application;
FIG. 7 shows a schematic structural view of a compressor structure according to an embodiment of the present application;
fig. 8 shows a schematic structural view of a refrigeration apparatus according to an embodiment of the present application.
The correspondence between the reference numerals and the component names in fig. 1 to 8 is:
100: a motor structure; 102: a stator structure; 1022: a stator core; 1023: a stator yoke; 1024: stator teeth; 1026: a first groove; 1027: a groove bottom contour line; 1028: a groove wall contour line; 1030: a second groove; 1031: a first groove; 1032: a second groove; 1034: stator punching; 104: a rotor structure; 1042: a rotor core; 1044: a permanent magnet; 1046: rotor punching; 200: a compressor structure; 202: a housing; 300: a refrigeration device; 302: a box body.
Detailed Description
In order that the above-recited objects, features and advantages of embodiments of the present application can be more clearly understood, a further detailed description of embodiments of the present application will be rendered by reference to the appended drawings and detailed description thereof. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, embodiments of the application may be practiced otherwise than as described herein, and therefore the scope of the application is not limited to the specific embodiments disclosed below.
Some embodiments according to the present application are described below with reference to fig. 1 to 8.
Example 1
As shown in fig. 1 and 2, the stator structure 102 according to the present embodiment includes a stator core 1022 and two kinds of grooves disposed on the stator core 1022, specifically, a first groove 1026 and a second groove 1030, and it is to be added that the stator core 1022 itself includes two conventional structures, namely, a stator yoke 1023 and stator teeth 1024, and the positional relationship between the two structures is that the stator teeth 1024 are disposed on the radial inner side of the stator yoke 1023, that is, the stator yoke 1023 extends radially inward to form the stator teeth 1024. For the first recess 1026 and the second recess 1030, the first recess 1026 is formed by recessing the outer sidewall of the stator yoke 1023, i.e. the sidewall of the side far away from the axis of the stator core 1022, in the groove-like manner, while the second recess 1030 is formed by recessing the first recess 1026 in the inner direction, i.e. the second recess 1030 extends from the bottom of the first recess 1026 toward the axis of the stator core 1022, so as to form a two-layer recess overlapping arrangement scheme, which can suppress noise on one hand, and ensure motor efficiency on the other hand, and further, the depth of the first recess 1026 and the depth of the second recess 1030 are not greater than half of the thickness of the stator yoke 1023, thereby greatly improving motor noise, especially for high frequency carrier noise.
The thickness of the stator yoke 1023 is the radial dimension of the stator yoke 1023 in the stator core 1022.
The depth of the first recess 1026 is a dimension extending radially inward from the outer edge of the stator core 1022.
Further, since the second recess 1030 is formed to continue to extend inward on the basis of the first recess 1026, the groove width of the second recess 1030 is generally not larger than the groove width of the first recess 1026.
Further, as shown in fig. 4, the stator core is formed by axially laminating a plurality of stator punching sheets 1034, each stator punching sheet is provided with a stator yoke, stator teeth and winding slots, the stator teeth are arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth so that the stator winding is wound on the winding slot, and a magnetic field can be generated on the rotor to realize the stator effect.
Further, the stator lamination 1034 is made of a silicon steel sheet or other soft magnetic material sheet, and has a thickness not greater than 0.35mm.
In a specific embodiment, in addition to the above-described upper limit values of the depths of the first recess 1026 and the second recess 1030, a lower limit value of the depths of the first recess 1026 and the second recess 1030 is also defined to be 0.2 times the thickness of the stator yoke 1023, so as to ensure that an effective noise reduction effect, especially for high frequency carriers, can be achieved during operation.
Example two
As shown in fig. 1 and 2, the stator structure 102 according to the present embodiment includes a stator core 1022 and two kinds of grooves disposed on the stator core 1022, specifically, a first groove 1026 and a second groove 1030, and it is to be added that the stator core 1022 itself includes two conventional structures, namely, a stator yoke 1023 and stator teeth 1024, and the positional relationship between the two structures is that the stator teeth 1024 are disposed on the radial inner side of the stator yoke 1023, that is, the stator yoke 1023 extends radially inward to form the stator teeth 1024. For the first recess 1026 and the second recess 1030, the first recess 1026 is formed by recessing the outer sidewall of the stator yoke 1023, i.e. the sidewall of the side far away from the axis of the stator core 1022, in the groove-like manner, while the second recess 1030 is formed by recessing the first recess 1026 in the inner direction, i.e. the second recess 1030 extends from the bottom of the first recess 1026 toward the axis of the stator core 1022, so as to form a two-layer recess overlapping arrangement scheme, which can suppress noise on one hand, and ensure motor efficiency on the other hand, and further, the depth of the first recess 1026 and the depth of the second recess 1030 are not greater than half of the thickness of the stator yoke 1023, thereby greatly improving motor noise, especially for high frequency carrier noise.
The thickness of the stator yoke 1023 is the radial dimension of the stator yoke 1023 in the stator core 1022.
The depth of the first recess 1026 is a dimension extending radially inward from the outer edge of the stator core 1022.
Further, since the second recess 1030 is formed to continue to extend inward on the basis of the first recess 1026, the groove width of the second recess 1030 is generally not larger than the groove width of the first recess 1026.
The second groove 1030 mainly includes two grooves, the shapes of the two grooves are different, specifically, the projection contour lines on the end faces of the stator core 1022 are different, meanwhile, the first groove 1031 and the second groove 1032 are arranged at intervals, and the first groove 1031 and the second groove 1032 are not communicated and are mutually independent, so that the different first groove 1031 and second groove 1032 can be combined with the first groove 1026 to form different groove structures, and then high-frequency carrier noise occurring in the operation process can be greatly improved under the combined action of the first groove 1026 and the second groove 1030.
In a specific embodiment, the first groove 1031 is a rectangular groove, and the second groove 1032 is an arc groove, which is more convenient to manufacture by adopting a conventional structure.
Further, the number of rectangular grooves is not less than three, and the sum of the numbers of the arc grooves and the rectangular grooves is equal to the number of the first grooves 1026.
Further, the number of rectangular grooves is three, and the number of arc grooves is Q-3.
Example III
As shown in fig. 1 and 2, the stator structure 102 according to the present embodiment includes a stator core 1022 and two kinds of grooves disposed on the stator core 1022, specifically, a first groove 1026 and a second groove 1030, and it is to be added that the stator core 1022 itself includes two conventional structures, namely, a stator yoke 1023 and stator teeth 1024, and the positional relationship between the two structures is that the stator teeth 1024 are disposed on the radial inner side of the stator yoke 1023, that is, the stator yoke 1023 extends radially inward to form the stator teeth 1024. For the first recess 1026 and the second recess 1030, the first recess 1026 is formed by recessing the outer sidewall of the stator yoke 1023, i.e. the sidewall of the side far away from the axis of the stator core 1022, in the groove-like manner, while the second recess 1030 is formed by recessing the first recess 1026 in the inner direction, i.e. the second recess 1030 extends from the bottom of the first recess 1026 toward the axis of the stator core 1022, so as to form a two-layer recess overlapping arrangement scheme, which can suppress noise on one hand, and ensure motor efficiency on the other hand, and further, the depth of the first recess 1026 and the depth of the second recess 1030 are not greater than half of the thickness of the stator yoke 1023, thereby greatly improving motor noise, especially for high frequency carrier noise.
The thickness of the stator yoke 1023 is the radial dimension of the stator yoke 1023 in the stator core 1022.
The depth of the first recess 1026 is a dimension extending radially inward from the outer edge of the stator core 1022.
Further, since the second recess 1030 is formed to continue to extend inward on the basis of the first recess 1026, the groove width of the second recess 1030 is generally not larger than the groove width of the first recess 1026.
As shown in fig. 3, the shape of the first recess 1026 is limited, and the projection contour line of the first recess 1026 is divided into a recess bottom contour line 1027 and two recess wall contour lines 1028, it can be understood that the three-dimensional structure corresponding to the recess bottom contour line 1027 is the recess bottom of the first recess 1026, and the three-dimensional structure corresponding to the recess wall contour line 1028 is the recess wall connected to the recess bottom, so that the first recess 1026 can be formed by combining.
It should be emphasized that one end of the slot wall profile 1028 is connected to the slot bottom profile 1027, but the other end extends directly to the outer wall of the stator yoke 1023.
In a specific embodiment, an obtuse angle is formed between the groove bottom contour 1027 and the groove wall contour 1028, so that the whole first groove 1026 is outwardly expanded, which is more beneficial to reducing the carrier frequency band sound during operation.
Furthermore, by limiting the position of the slot bottom contour 1027 to correspond to the position of the stator teeth 1024, a certain included angle is formed between two ends of the slot bottom contour 1027 relative to the axis of the stator core 1022, and the included angle between two adjacent stator teeth 1024 relative to the axis of the stator core 1022 is 360 °/Q, by limiting the included angle corresponding to the slot bottom contour 1027 to be not greater than the included angle formed by the stator teeth 1024, i.e. limiting the width of the slot bottom contour 1027, the possibility of damage to the motor performance caused by contact between two adjacent slot bottom contours 1027 is reduced, and meanwhile, the design of expanding the slot wall contour 1028 is facilitated to ensure the effect of reducing the high-frequency carrier noise.
More specifically, as shown in fig. 2, the groove a (i.e., the first groove 1026) is formed by a line 1 (i.e., the groove bottom contour 1027), a line 2 and a line 3 (i.e., the groove wall contour 1028), the line 1 is perpendicular to the tooth center line, the distance between the line 1 and the intersection point of the outer circle of the stator core 1022 and the center line of the stator tooth 1024 is L1, the line 2 intersects with the line 1 at a point 1, the line 3 intersects with the line 1 at a point 2, the point 1, the point 2 intersects with the center of the circle at a point 3, the groove B is rectangular, the length is W, the width is L2, the groove C is a circular arc, and the radius is R. The thickness y of the stator yoke 1023 and the above dimensions satisfy the formula: l1/y is more than or equal to 0.2 and less than or equal to 0.5; l2/y is more than or equal to 0.2 and less than or equal to 0.5; α1>90 °; α2>90 °;0 ° < α2<360 °/Q; the first grooves 1026 are uniformly distributed outside the stator yoke 1023, the second grooves 1030 are uniformly distributed between the first grooves 1026, and n1=3; n2=q-3 wherein: the stator yoke 1023 has a thickness y in mm, L1 mm, L2 mm, α1 in °, α2 in °, stator slot number Q, first slot 1026 number N1, and second slot 1030 number N2. The application can improve the high-frequency carrier noise of the motor and the compressor.
Example IV
As shown in fig. 5 and 6, the motor structure 100 according to the present embodiment includes two parts, namely a stator structure 102 and a rotor structure 104, wherein, as shown in fig. 2, the stator structure 102 is the structure mentioned in any of the foregoing embodiments, and for the stator core 1022, when the stator teeth 1024 are wound to form stator windings in winding slots, a normal magnetic field driving effect is achieved on the rotor structure 104, so as to further achieve rotation of the rotor structure 104. Specifically, the rotor structure 104 and the stator structure 102 are coaxially disposed, and mainly include two parts, namely a rotor core 1042 and a permanent magnet 1044, and when the stator structure 102 is electrified to generate a vector magnetic field, the magnetic element will rotate under the magnetic action, so as to realize movement of the rotor structure 104.
The axis of the stator core 1022 is collinear with the axis of the rotor core 1042, and the stator teeth 1024 and the permanent magnets 1044 are disposed around the axis and are generally uniformly disposed.
Further, the cross-sectional shape of the permanent magnet 1044 belongs to a symmetrical pattern, so as to facilitate processing and installation, specifically, the permanent magnet 1044 includes any combination of three shapes, and may be a pure straight line segment, where the projection contour line of the permanent magnet 1044 should be perpendicular to the central axis under the condition of limiting symmetry. In another case, the permanent magnet 1044 may be a symmetrical straight line segment, or may be understood as a broken line segment, where the probability of projecting a contour line is high, including but not limited to V-shape, W-shape, etc. In yet another case, the permanent magnet 1044 is a pure curved segment, where a symmetrical shape is still required, and may be a single arc or a combination of multiple arcs.
Of course, a combination of curved and straight line segments may be used as long as the structure is symmetrical.
Further, the relationship between the number Q of stator teeth 1024 and the pole pair number p of the permanent magnets and the phase number m of the motor structure 100 is:
by limiting the number of stator teeth 1024 to be no more than 2 times the product of the pole pair number of the rotor and the motor phase number, the fractional slot motor can be integrally formed, and under the action of the fractional slot motor, the higher harmonic potential generated by the non-sinusoidal distribution of the magnetic pole magnetic field can be effectively weakened, and meanwhile, the amplitude of the tooth harmonic potential can be weakened, and the waveform is improved. In addition, the motor with fractional slot can reduce the pulse amplitude value of magnetic flux effectively to reduce the pulse loss of magnetic pole surface.
Further, as shown in fig. 5, the rotor core is formed by axially laminating a plurality of rotor punching sheets 1046, wherein the rotor punching sheets 1046 are made of silicon steel sheets or other soft magnetic material sheets, and the thickness is not more than 0.35mm.
Further, the rotor core length is greater than or equal to the stator core 1022 length.
Further, the stator slot number Q is not less than 6.
Further, the rotor pole pair number p is more than or equal to 2.
Further, the stator slot number, the rotor pole number and the motor phase number satisfy: q/2mp <1.
Further, the winding is composed of enameled wires.
Further, the stator core 1022 and the rotor core are each formed by stacking silicon steel sheets.
Example five
As shown in fig. 7, the compressor structure 200 according to the present embodiment includes a housing 202 and a motor structure 100 disposed in the housing 202, and the motor structure 100 in any of the foregoing embodiments is disposed in the housing 202, so that the beneficial effects of the motor structure 100 are not repeated herein.
Example six
As shown in fig. 8, the refrigeration device 300 according to the present embodiment includes a case 302 and a compressor structure 200 disposed in the case 302, and the compressor structure 200 according to the fifth embodiment is disposed in the refrigeration device 300, so that the beneficial effects of the compressor structure 200 are not described herein.
Among them, the refrigerating apparatus 300 includes, but is not limited to, apparatuses having a refrigerating function such as a refrigerator, a freezer, an air conditioner, and the like.
According to the stator structure, the motor structure, the compressor structure and the refrigeration equipment provided by the application, motor noise can be greatly improved, and particularly, the high-frequency carrier noise can be greatly reduced.
In the present application, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present application.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 application. In this specification, schematic representations of the above terms 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 is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (12)
1. A stator structure, comprising:
a stator core including a stator yoke and a plurality of stator teeth extending radially inward from the stator yoke;
the first groove is formed in one side wall, far away from the axis of the stator core, of the stator yoke;
the second groove is arranged in the first groove and extends from the bottom of the first groove towards the axis of the stator core;
wherein the depth of the first groove is not more than half of the thickness of the stator yoke, and the depth of the second groove is not more than half of the thickness of the stator yoke;
the second groove includes:
a first slot and a second slot;
the first groove and the second groove are arranged at intervals along the circumferential direction of the stator core, the projection contour line of the first groove is different from the projection contour line of the second groove on the end surface of the stator core, and the first groove and the second groove are respectively combined with the first groove to form different groove structures;
the depth of the first groove is not less than 0.2 times the thickness of the stator yoke;
the depth of the second groove is not less than 0.2 times the thickness of the stator yoke;
on the terminal surface of stator core, the projection contour line of first recess specifically includes:
the groove bottom contour line and groove wall contour lines respectively connected with one ends of the groove bottom contour lines;
the included angle between the two ends of the groove bottom contour line and the connecting line between the axes of the stator core is not more than 360 degrees/Q;
wherein Q is the number of stator teeth.
2. The stator structure of claim 1, wherein the first slot is a rectangular slot and the second slot is an arcuate slot.
3. The stator structure according to claim 1, wherein the other end of each slot wall contour extends to a side wall of the stator yoke away from an axis of the stator core.
4. The stator structure according to claim 2, characterized in that, on an end face of the stator core, a projected contour of the first groove specifically includes:
the groove bottom contour line and groove wall contour lines respectively connected with one ends of the groove bottom contour lines;
wherein the other end of each slot wall contour extends to a side wall of the stator yoke away from the axis of the stator core.
5. A stator structure according to claim 3, wherein the angle between the groove bottom contour and any one of the groove wall contours is an obtuse angle.
6. The stator structure of claim 4 wherein the angle between the slot bottom contour and any of the slot wall contours is an obtuse angle.
7. The stator structure according to any one of claims 1 to 6, characterized in that the stator core includes a plurality of stator laminations, the plurality of stator laminations being stacked in an axial direction of the stator core.
8. An electric motor structure, comprising:
the stator structure as claimed in any one of claims 1 to 7;
and the rotor structure is coaxially arranged with the stator structure and comprises a rotor core and permanent magnets arranged on the rotor core.
9. The motor structure according to claim 8, characterized in that, on an end face of the rotor core, projection contour lines of the permanent magnets are symmetrical with respect to central axes of adjacent two of the stator teeth;
wherein the permanent magnet comprises one or a combination of the following: straight line segment, folded line segment, curved line segment.
10. The motor structure according to claim 8, wherein,
the relationship between the number of stator teeth Q in the stator structure and the number of permanent magnets p and the number of phases m of the motor structure is:
11. a compressor structure, comprising:
a housing;
a motor structure as claimed in any one of claims 8 to 10, provided within the housing.
12. A refrigeration appliance, comprising:
a case;
the compressor structure of claim 11, disposed within said housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198762.3A CN113872348B (en) | 2021-10-14 | 2021-10-14 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| PCT/CN2022/080022 WO2023060829A1 (en) | 2021-10-14 | 2022-03-09 | Stator structure, electric motor structure, compressor structure, and refrigeration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198762.3A CN113872348B (en) | 2021-10-14 | 2021-10-14 | Stator structure, motor structure, compressor structure and refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113872348A CN113872348A (en) | 2021-12-31 |
| CN113872348B true CN113872348B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111198762.3A Active CN113872348B (en) | 2021-10-14 | 2021-10-14 | Stator structure, motor structure, compressor structure and refrigeration equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113872348B (en) |
| WO (1) | WO2023060829A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113872348B (en) * | 2021-10-14 | 2023-11-17 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| CN113872349B (en) * | 2021-10-14 | 2023-01-31 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| WO2024016217A1 (en) * | 2022-07-20 | 2024-01-25 | 华为技术有限公司 | Stator, stator assembly, and resolver |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508938A (en) * | 2002-12-19 | 2004-06-30 | 松下电器产业株式会社 | Motor |
| CN204156622U (en) * | 2014-11-14 | 2015-02-11 | 广东美芝制冷设备有限公司 | Stator punching, motor and compressor |
| CN205846909U (en) * | 2016-06-30 | 2016-12-28 | 广东美芝制冷设备有限公司 | Stator, magneto and compressor for magneto |
| CN107482805A (en) * | 2017-07-31 | 2017-12-15 | 广东威灵电机制造有限公司 | Motor stator core stamping sheet, motor stator core and compressor |
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
| CN109923757A (en) * | 2016-11-28 | 2019-06-21 | 日立江森自控空调有限公司 | Permanent magnet rotary electric machine and the compressor for using permanent magnet rotary electric machine |
| CN110504767A (en) * | 2018-05-16 | 2019-11-26 | 上海海立电器有限公司 | A kind of stator core and motor |
| CN211530869U (en) * | 2020-01-30 | 2020-09-18 | Lg电子株式会社 | Motor and compressor with same |
| CN111697729A (en) * | 2020-07-16 | 2020-09-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor, compressor and refrigeration plant |
| CN112701813A (en) * | 2020-12-24 | 2021-04-23 | 珠海格力电器股份有限公司 | Stator and permanent magnet motor |
| CN214314758U (en) * | 2021-01-27 | 2021-09-28 | 安徽威灵汽车部件有限公司 | Stator core, stator, motor, electric power steering system and vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000166152A (en) * | 1998-11-20 | 2000-06-16 | Mitsubishi Electric Corp | Stator of ac generator for vehicle and its manufacture |
| CN113872348B (en) * | 2021-10-14 | 2023-11-17 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| CN113872349B (en) * | 2021-10-14 | 2023-01-31 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| CN113872351B (en) * | 2021-10-14 | 2022-10-18 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration plant |
| CN113872350B (en) * | 2021-10-14 | 2023-08-01 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
-
2021
- 2021-10-14 CN CN202111198762.3A patent/CN113872348B/en active Active
-
2022
- 2022-03-09 WO PCT/CN2022/080022 patent/WO2023060829A1/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508938A (en) * | 2002-12-19 | 2004-06-30 | 松下电器产业株式会社 | Motor |
| CN204156622U (en) * | 2014-11-14 | 2015-02-11 | 广东美芝制冷设备有限公司 | Stator punching, motor and compressor |
| CN205846909U (en) * | 2016-06-30 | 2016-12-28 | 广东美芝制冷设备有限公司 | Stator, magneto and compressor for magneto |
| CN109923757A (en) * | 2016-11-28 | 2019-06-21 | 日立江森自控空调有限公司 | Permanent magnet rotary electric machine and the compressor for using permanent magnet rotary electric machine |
| CN107482805A (en) * | 2017-07-31 | 2017-12-15 | 广东威灵电机制造有限公司 | Motor stator core stamping sheet, motor stator core and compressor |
| CN110504767A (en) * | 2018-05-16 | 2019-11-26 | 上海海立电器有限公司 | A kind of stator core and motor |
| CN109672312A (en) * | 2019-01-30 | 2019-04-23 | 浙江博阳压缩机有限公司 | Permanent magnet synchronous motor |
| CN211530869U (en) * | 2020-01-30 | 2020-09-18 | Lg电子株式会社 | Motor and compressor with same |
| CN111697729A (en) * | 2020-07-16 | 2020-09-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor, compressor and refrigeration plant |
| CN112701813A (en) * | 2020-12-24 | 2021-04-23 | 珠海格力电器股份有限公司 | Stator and permanent magnet motor |
| CN214314758U (en) * | 2021-01-27 | 2021-09-28 | 安徽威灵汽车部件有限公司 | Stator core, stator, motor, electric power steering system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023060829A1 (en) | 2023-04-20 |
| CN113872348A (en) | 2021-12-31 |
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