CN117895683A - Motor assembly, compressor and refrigeration equipment - Google Patents
Motor assembly, compressor and refrigeration equipment Download PDFInfo
- Publication number
- CN117895683A CN117895683A CN202410077409.7A CN202410077409A CN117895683A CN 117895683 A CN117895683 A CN 117895683A CN 202410077409 A CN202410077409 A CN 202410077409A CN 117895683 A CN117895683 A CN 117895683A
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- axis
- magnetism isolating
- groove
- motor assembly
- 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.)
- Pending
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 255
- 239000010959 steel Substances 0.000 claims abstract description 255
- 238000004080 punching Methods 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract 5
- 230000005389 magnetism Effects 0.000 claims description 66
- 230000005347 demagnetization Effects 0.000 abstract description 13
- 238000003475 lamination Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 description 16
- 238000009826 distribution Methods 0.000 description 11
- 238000002955 isolation Methods 0.000 description 8
- 239000000306 component Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a motor assembly, a compressor and refrigeration equipment, wherein the motor assembly comprises a rotor iron core and a plurality of magnetic steel groups, the rotor iron core comprises a plurality of rotor punching sheets which are arranged in a lamination manner along the direction of a rotation axis, the rotor punching sheets are provided with a plurality of magnetic steel grooves, and the magnetic steel grooves are arranged at intervals along the circumferential direction of the rotor iron core; the magnetic steel groups are correspondingly arranged in the magnetic steel grooves, each magnetic steel group comprises a plurality of magnetic steel bodies, and the magnetic steel bodies are sequentially arranged along the circumferential direction; in each magnetic steel group, the intrinsic coercivity of the magnetic steel body far away from the d axis is larger than that of the magnetic steel body close to the d axis in any two adjacent magnetic steel bodies. The motor component provided by the invention can effectively improve demagnetization and reduce cost.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a motor assembly, a compressor and refrigeration equipment.
Background
The motor component is used as a core component of the compressor, and the efficiency of the motor component directly influences the overall performance of the compressor. In the related art, the motor component adopts a small slot pole matching structure to improve the efficiency, however, the small slot pole matching structure can bring the problems of poor anti-demagnetizing capability and insufficient overload capability, and particularly, the anti-demagnetizing capability near the q-axis position is poor. For this reason, the magnetic load is increased by increasing the thickness of the magnetic steel, thereby improving the demagnetization and overload capabilities. However, the use of a larger thickness of the magnetic steel leads to an increase in cost.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a motor assembly, which can effectively improve demagnetization and reduce cost.
The invention also provides a compressor with the motor assembly and refrigeration equipment with the compressor.
According to an embodiment of the first aspect of the invention, the motor assembly comprises a rotor core, wherein the rotor core comprises a plurality of rotor punching sheets which are arranged in a stacking manner along the direction of a rotation axis, the rotor punching sheets are provided with a plurality of magnetic steel grooves, and the plurality of magnetic steel grooves are arranged at intervals along the circumferential direction of the rotor core; the magnetic steel groups are correspondingly arranged in the magnetic steel grooves, each magnetic steel group comprises a plurality of magnetic steel bodies, and the magnetic steel bodies are sequentially arranged along the circumferential direction; in each magnetic steel group, the intrinsic coercivity of the magnetic steel body far away from the d axis in any two adjacent magnetic steel bodies is larger than that of the magnetic steel body close to the d axis.
The motor assembly according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the intrinsic coercive force of the magnet steel body far away from the d axis in any two adjacent magnet steel bodies in each magnet steel group is larger than that of the magnet steel body close to the d axis, namely, the higher the intrinsic coercive force of the magnet steel body is, the better the demagnetization resistance is, so that the demagnetization resistance of the magnet steel group is improved, the aim of improving demagnetization is achieved, and the magnetic field distribution is optimized; meanwhile, the thickness of the magnetic steel body does not need to be increased, so that the material cost is reduced, and the manufacturing cost of the motor assembly is further reduced.
According to some embodiments of the invention, a distance from one end of one of the two adjacent magnetic steel bodies, which is close to the other magnetic steel body, to the end, which is far away from the other magnetic steel body, is a width of the magnetic steel body, and in each magnetic steel group, a width of the magnetic steel body, which is far from the d axis, of any two adjacent magnetic steel bodies is larger than a width of the magnetic steel body, which is close to the d axis.
According to some embodiments of the invention, the magnetic steel groove is provided with a first wall surface and a second wall surface which are oppositely arranged along the d-axis direction, the rotor punching sheet comprises connecting ribs, and two ends of each connecting rib are respectively connected with the first wall surface and the second wall surface.
According to some embodiments of the invention, the number of the connecting ribs is equal to the number of the magnetic steel grooves, the connecting ribs are arranged in the magnetic steel grooves in a one-to-one correspondence mode, and the central axes of the connecting ribs coincide with the d-axis.
According to some embodiments of the invention, a plurality of the connecting ribs are arranged in each of the magnetic steel grooves, and the plurality of the connecting ribs in each of the magnetic steel grooves are arranged at intervals along the circumferential direction and symmetrically about the d-axis.
According to some embodiments of the invention, the connecting rib has a third wall surface and a fourth wall surface facing away from each other along the circumferential direction, the minimum distance between the third wall surface and the fourth wall surface is L 1, the magnetic steel body has a fifth wall surface facing away from each other and a sixth wall surface facing the first wall surface, the sixth wall surface facing the second wall surface, and the minimum distance between the fifth wall surface and the sixth wall surface is L 2, which satisfies the following conditions: l 2/L1 is more than or equal to 3 and less than or equal to 6.
According to some embodiments of the invention, the rotor punching sheet is provided with a plurality of magnetism isolating groups, the magnetism isolating groups are respectively arranged between the magnetic steel grooves and the outer contour of the rotor punching sheet in a one-to-one correspondence mode, each magnetism isolating group comprises a plurality of magnetism isolating grooves, and the magnetism isolating grooves are arranged at intervals along the circumferential direction.
According to some embodiments of the invention, in each of the magnetism isolating groups, a plurality of the magnetism isolating grooves are symmetrically arranged about the d-axis.
According to some embodiments of the invention, an end of the magnetism isolating slot close to the magnetic steel slot is a first end, an end of the magnetism isolating slot far away from the magnetic steel slot is a second end, and the second end is closer to the d-axis than the first end.
According to some embodiments of the present invention, the magnetic steel groove includes a first groove section and a second groove section symmetrically arranged about the d-axis, an included angle between the first groove section and the second groove section toward the d-axis is β, in each of the magnetism isolating groups, a connection line of the first ends of the plurality of magnetism isolating grooves located on one side of the d-axis is a first connection line, a connection line of the first ends of the plurality of magnetism isolating grooves located on the other side of the d-axis is a second connection line, and an included angle between the first connection line and the second connection line toward the d-axis is γ, so that: 90 DEG < gamma < beta.
According to some embodiments of the invention, a direction from the second end to the first end is an extending direction of the magnetism isolating grooves, two magnetism isolating grooves of the magnetism isolating group are a first magnetism isolating groove and a second magnetism isolating groove, the first magnetism isolating groove and the second magnetism isolating groove are respectively located at two sides of the d axis along the circumferential direction, the first magnetism isolating groove and the second magnetism isolating groove are respectively closer to two q axes adjacent to the d axis along the circumferential direction, an included angle between the extending direction of the first magnetism isolating groove and the extending direction of the second magnetism isolating groove is alpha, and the following conditions are: alpha is more than 90 degrees and less than or equal to 120 degrees.
According to some embodiments of the invention, the maximum outer diameter of the rotor core is D 1, the rotor pole pair number of the motor assembly is P, and the following conditions are satisfied: d 1/P is less than or equal to 8 and less than or equal to 16.
According to some embodiments of the invention, the motor assembly further comprises a stator core wound around the periphery of the rotor core, wherein the maximum outer diameter of the stator core is D 2, and the minimum inner diameter of the stator core is D 3, so that: d 3/D2 is more than 0.52 and less than 0.7.
A compressor according to an embodiment of the second aspect of the present invention includes a motor assembly according to an embodiment of the first aspect of the present invention.
The compressor according to the embodiment of the second aspect of the present invention has at least the following advantageous effects: the compressor adopts the motor assembly, so that the intrinsic coercivity of the magnet steel bodies far away from the d axis is larger than that of the magnet steel bodies close to the d axis in any two adjacent magnet steel bodies in each magnet steel group, that is, the intrinsic coercivity of the magnet steel bodies is larger when the magnet steel bodies are closer to the q axis, the anti-demagnetization capability is better, the anti-demagnetization capability of the magnet steel groups is improved, the aim of improving demagnetization is fulfilled, and the magnetic field distribution is optimized; meanwhile, the thickness of the magnetic steel body does not need to be increased, so that the material cost is reduced, and the manufacturing cost of the motor assembly is further reduced.
A refrigeration appliance according to an embodiment of the third aspect of the present invention includes a compressor according to an embodiment of the second aspect of the present invention.
The refrigerating equipment according to the embodiment of the third aspect of the invention has at least the following beneficial effects: the compressor is adopted in the refrigeration equipment, so that the intrinsic coercivity of the magnet steel bodies far away from the d axis is larger than that of the magnet steel bodies close to the d axis in any two adjacent magnet steel bodies in each magnet steel group, that is, the intrinsic coercivity of the magnet steel bodies is larger and the anti-demagnetization capability is better as the magnet steel bodies are closer to the q axis, the anti-demagnetization capability of the magnet steel groups is improved, the aim of improving demagnetization is fulfilled, and the magnetic field distribution is optimized; meanwhile, the thickness of the magnetic steel body does not need to be increased, so that the material cost is reduced, and the manufacturing cost of the motor assembly is further reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of a motor assembly in an embodiment of the invention;
FIG. 2 is a schematic view of the stator core of FIG. 1;
FIG. 3 is a schematic diagram of a magnetic steel set combined with a rotor core according to an embodiment of the present invention;
FIG. 4 is a schematic view of a rotor punching sheet according to an embodiment of the present invention;
FIG. 5 is a schematic view of a rotor punching sheet according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a magnetic steel body according to an embodiment of the present invention;
FIG. 7 is a simulation of the magnetic induction of a magnetic steel assembly in an embodiment of the present invention;
fig. 8 is a simulation diagram of the magnetic induction intensity of a magnetic steel set in the prior art.
Reference numerals:
A rotor core 10; a stator core 20;
Rotor sheet 100; a magnetic steel groove 110; a first trough section 111; a second trough section 112; a first wall surface 113; a second wall 114; a connecting rib 120; a third wall surface 121; a fourth wall 122; a first magnetism isolating slot 130; a first end 131; a second end 132; a second magnetism isolating slot 140; a first connection line 150; a second wire 160;
a magnetic steel group 200; a magnetic steel body 210; a fifth wall surface 211; sixth wall 212.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, mounting, connection, assembly, cooperation, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
The motor component is used as a core component of the compressor, and the efficiency of the motor component directly influences the overall performance of the compressor. In the related art, the motor component adopts a small slot pole matching structure to improve the efficiency, however, the small slot pole matching structure can bring the problems of poor anti-demagnetizing capability and insufficient overload capability.
Referring to fig. 8, a schematic diagram of magnetic induction intensity of a rotor in a certain state is shown, wherein the darker the color is, the larger the magnetic induction intensity is, and the lighter the color is, the smaller the magnetic induction intensity is. In the working process of the motor assembly, due to the action of a demagnetizing field of the armature winding, the magnetic field direction of the demagnetizing field is parallel and opposite to the magnetic field direction of a magnetic field (namely a permanent magnetic field) generated by the magnetic steel, so that the magnetic induction intensity of the magnetic steel is reduced, and particularly, the magnetic induction intensity of the magnetic steel close to the q axis is smaller. In fig. 8, in this state of the rotor, the magnetic induction of the magnetic steel at the upper left and lower right corner positions (positions close to the q axis) in the drawing is smaller than the magnetic induction of the magnetic steel at the position close to the d axis, whereas the magnetic induction of the magnetic steel at the lower left and upper right corner positions in the drawing is substantially identical to the magnetic induction of the magnetic steel at the position close to the d axis. It will be readily appreciated that, since the rotor is rotated, in the other state, there will be a lower left and upper right corner positions (positions close to the q-axis) in the drawing where the magnetic induction is smaller than that of the magnetic steel close to the d-axis, and the magnetic induction of the magnetic steel close to the upper left and lower right corner positions in the drawing is substantially identical to that of the magnetic steel close to the d-axis. That is, the magnetic induction intensity near the d-axis is smaller than that near the d-axis, that is, the demagnetizing resistance of the magnetic steel near the q-axis is smaller than that near the d-axis, so that the demagnetizing resistance is poor, and the magnetic field is unevenly distributed, thereby influencing the overload capacity.
It is easy to understand that the d-axis is the magnetic field direction of the magnetic pole (i.e., N-S direction), the electrical angle θ Electric power between the q-axis and the d-axis is 90 °, the mechanical angle θ Machine for making food between the q-axis and the d-axis is the angle between the q-axis and the d-axis on a projection plane perpendicular to the rotation axis of the rotor, the mechanical angle is the spatial geometry angle, and θ Electric power and θ Machine for making food satisfy: θ Electric power ＝Pθ Machine for making food , where P is the pole pair number of the rotor. That is, on a projection plane perpendicular to the rotation axis of the rotor, the d-axis may be understood as the symmetry center line of the magnetic poles, and the q-axis may be understood as the symmetry center line of the adjacent two magnetic poles.
In order to solve the problem of poor demagnetization resistance, in the related art, the magnetic load is increased by increasing the thickness of the magnetic steel near the q-axis position, thereby improving the demagnetization and overload resistance. However, the use of a larger thickness of the magnetic steel leads to an increase in cost.
For this purpose, referring to fig. 1 to 6, the embodiment of the first aspect of the present invention provides a motor assembly applied to a compressor, which is applied to a refrigerating apparatus, which may be an air conditioner, a refrigerator, or the like.
Referring to fig. 1, it will be appreciated that the motor assembly includes a stator including a stator core 20 and windings (not shown) wound around stator teeth of the stator core 20, and a rotor including a rotor core 10 and a plurality of magnetic steel groups 200, the plurality of magnetic steel groups 200 being mounted to the rotor core 10. The stator core 20 is wound around the outer periphery of the rotor core 10, and the rotor core 10 is rotatable within the stator core 20.
Referring to fig. 4, it can be understood that the rotor core 10 includes a plurality of rotor laminations 100, and the plurality of rotor laminations 100 are stacked in the axial direction of the rotor core 10, i.e., the direction of the rotational axis of the rotor core 10. Each rotor punching sheet 100 is provided with a plurality of magnetic steel grooves 110, the plurality of magnetic steel grooves 110 are arranged at equal intervals along the circumferential direction of the rotor core 10, the magnetic steel grooves 110 penetrate through the rotor punching sheet 100, and the circumferential direction of the rotor core 10 is the direction around the rotation axis of the rotor core 10. After the plurality of rotor sheets 100 are laminated, the magnetic steel grooves 110 on the same position along the circumferential direction of the rotor core 10 on each rotor sheet 100 are correspondingly communicated. The magnetic steel grooves 110 may have a V-shape, a W-shape, a U-shape, a straight shape, or the like on a projection plane perpendicular to the axial direction of the rotor core 10. In this embodiment, each rotor punching sheet 100 is provided with four magnetic steel grooves 110, the shape of the magnetic steel grooves 110 is V-shaped, and the magnetic steel grooves 110 have an axisymmetric structure.
It is to be readily understood that the d-axis may be understood as the center line of symmetry of the magnetic steel grooves 110, and the q-axis may be understood as the center line of symmetry of two adjacent magnetic steel grooves 110.
Referring to fig. 3 and 4, it can be understood that the number of the magnetic steel groups 200 is equal to the number of the magnetic steel grooves 110 on each rotor sheet 100, and that a plurality of the magnetic steel groups 200 are correspondingly installed in a plurality of the magnetic steel grooves 110. Each of the magnetic steel groups 200 includes a plurality of magnetic steel bodies 210, and the plurality of magnetic steel bodies 210 are sequentially arranged in the magnetic steel grooves 110 along the circumferential direction of the rotor core 10. Specifically, in the present embodiment, the shape of the magnetic steel groove 110 is V-shaped, so that all the magnetic steel bodies 210 are identical in shape for processing, and in each magnetic steel group 200, the plurality of magnetic steel bodies 210 are equally divided into two groups and are respectively located on two sides of the d-axis along the circumferential direction of the rotor core 10, and the magnetic steel bodies 210 of the two groups are symmetrically arranged about the d-axis. Generally, the number of the magnetic steel bodies 210 of each magnetic steel set 200 is an even number, and the number of the magnetic steel bodies 210 located at one side of the d-axis is at least two, that is, each magnetic steel set 200 includes at least four magnetic steel bodies 210. Thus, there are at least two magnetic steel bodies 210 between adjacent d-axis and q-axis. In this embodiment, each magnetic steel set 200 includes four magnetic steel bodies 210, and of course, each magnetic steel sub may include six, eight, ten or more magnetic steel bodies 210, and the number of the magnetic steel bodies 210 located between the adjacent d-axis and q-axis is three, four, five or more.
It is understood that in other embodiments, for example, the magnetic steel grooves 110 are in a line, and the number of the magnetic steel bodies 210 of each magnetic steel group 200 may be an odd number or an even number, wherein, when the number is even, the arrangement of the magnetic steel bodies 210 may be referred to the above description. In the case of an odd number, at least three, the magnetic steel bodies 210 located at the middle position are symmetrically arranged about the d-axis along the circumferential direction of the rotor core 10, and the rest of the magnetic steel bodies 210 are equally divided into two small groups and symmetrically arranged on both sides of the d-axis along the circumferential direction of the rotor core 10.
Referring to fig. 3, it can be understood that, in any two adjacent magnetic steel bodies 210 in each magnetic steel group 200, the intrinsic coercive force of the magnetic steel body 210 far from the d axis is greater than that of the magnetic steel body 210 near the d axis. That is, among the plurality of magnetic steel bodies 210 between the adjacent d-axis and q-axis, the intrinsic coercive force of the plurality of magnetic steel bodies 210 decreases in order from the direction of the adjacent d-axis in the q-axis direction.
It is easy to understand that the intrinsic coercivity of the magnetic steel body 210 is related to the percentage of the permanent magnet material or constituent components of the magnetic steel body 210, and different permanent magnet materials may be used for two magnetic steel bodies 210 having different intrinsic coercivity. For example, the magnetic steel body 210 may be an oxide magnet or a rare earth magnet of neodymium iron boron, wherein the intrinsic coercivity of the rare earth magnet of neodymium iron boron is greater than the intrinsic coercivity of the oxide magnet.
It is easy to understand that the intrinsic coercivity is a physical quantity measuring the demagnetizing resistance of the magnetic steel body 210, and the greater the intrinsic coercivity, the better the demagnetizing resistance of the magnetic steel body 210, and vice versa. The intrinsic coercivity can be measured by a digital fluxgate magnet tester and other devices. For the magnetic steel body 210 in the motor assembly, when the intrinsic coercive force of the magnetic steel body 210 is actually measured, the magnetic steel body 210 can be disassembled and then measured by the equipment.
Therefore, by making the intrinsic coercivity of the magnet steel body 210 far from the d axis larger than the intrinsic coercivity of the magnet steel body 210 close to the d axis in any two adjacent magnet steel bodies 210 in each magnet steel group 200, that is, the closer to the q axis, the larger the intrinsic coercivity of the magnet steel body 210, the better the anti-demagnetization capability, thereby improving the anti-demagnetization capability of the magnet steel group 200, achieving the purpose of improving demagnetization, and optimizing the magnetic field distribution; meanwhile, the thickness of the magnetic steel body 210 does not need to be increased, so that the material cost is reduced, and the manufacturing cost of the motor assembly is further reduced.
Referring to fig. 7, a schematic diagram of the magnetic induction intensity of the rotor of the present embodiment at each location of the magnetic steel body 210 in a certain state is shown. As can be seen from fig. 7, the magnetic induction intensity of each magnetic steel body 210 is substantially equal and greater. Therefore, the demagnetizing can be obviously improved, the magnetic field distribution is optimized, the magnetic field distribution is uniform, and the overload capacity of the motor assembly is improved.
Referring to fig. 3 and 6, it can be understood that one of the two adjacent magnetic steel bodies 210 is defined as a first magnetic steel body 210, the other is defined as a second magnetic steel body 210, a distance from one end of the first magnetic steel body 210 close to the second magnetic steel body 210 to one end far from the second magnetic steel body 210 is a width of the first magnetic steel body 210, and a direction in which a width dimension is located is a width direction. Generally, on a projection plane perpendicular to the axial direction of the rotor core 10, the projection of the magnetic steel body 210 is rectangular, and the length of the long side of the rectangular projection of the magnetic steel body 210 is the width of the magnetic steel body 210. Therefore, when the width of the magnetic steel body 210 is measured, the long side of the projection of the magnetic steel body 210 on the projection plane perpendicular to the axial direction of the rotor core 10 can be directly measured. Or along the width direction, the linear distance between the two ends of the magnetic steel body 210 is the width, and the width of the magnetic steel body 210 can be measured by directly clamping the magnetic steel body 210 at the two ends along the width direction through a vernier caliper. Of course, the projection of the magnetic steel body 210 may be other shapes.
Referring to fig. 3 and 6, it can be understood that, in each magnetic steel group 200, the width of the magnetic steel body 210 far from the d axis is greater than the width of the magnetic steel body 210 near to the d axis in any two adjacent magnetic steel bodies 210. That is, among the plurality of magnetic steel bodies 210 between the adjacent d-axis and q-axis, the widths of the plurality of magnetic steel bodies 210 decrease in order from the direction of the adjacent d-axis in the q-axis direction. Therefore, the width of the magnetic steel body 210 close to the q-axis is made larger, that is, the width of the magnetic steel body 210 with larger intrinsic coercivity is also larger, and the magnetic field range corresponding to the magnetic steel body 210 with larger intrinsic coercivity is larger, so that the anti-demagnetizing capability of the magnetic steel group 200 can be further improved, the demagnetizing capability is further improved, and the magnetic field distribution is optimized, so that the overload capability of the motor assembly is further improved.
Referring to fig. 4, it is understood that the magnetic steel groove 110 has a first wall surface 113 and a second wall surface 114 arranged opposite to each other in the d-axis direction, and in this embodiment, the first wall surface 113 and the second wall surface 114 are each V-shaped on a projection surface perpendicular to the axial direction of the rotor core 10. Of the two wall surfaces of the magnetic steel groove 110 which are arranged opposite to each other in the d-axis direction, a wall surface which defines a rotation axis near the rotor core 10 is a first wall surface 113, and a wall surface which is far from the rotation axis of the rotor core 10 is a second wall surface 114.
Referring to fig. 4, it is to be understood that the rotor sheet 100 further includes a connecting rib 120, two ends of the connecting rib 120 along the d-axis are respectively connected to the first wall surface 113 and the second wall surface 114, and a projection of the connecting rib 120 on a projection plane perpendicular to the axial direction of the rotor core 10 is rectangular, however, the projection of the connecting rib 120 may be other shapes. Specifically, in this embodiment, in each rotor punching sheet 100, the number of the connection ribs 120 is equal to the number of the magnetic steel grooves 110, and the connection ribs 120 are disposed in the magnetic steel grooves 110 in a one-to-one correspondence. In each magnetic steel groove 110, the connecting ribs 120 are arranged along the d axis, the central axis of each connecting rib 120 is coincident with the d axis, each connecting rib 120 divides the magnetic steel groove 110 into two straight groove sections, the two groove sections are symmetrically arranged about the d axis, and at least two magnetic steel bodies 210 are respectively arranged in each groove section.
Referring to fig. 5, it is understood that in other embodiments, each magnetic steel groove 110 may correspond to a plurality of connecting ribs 120, that is, a plurality of connecting ribs 120 are disposed in each magnetic steel groove 110. Taking one of the magnetic steel grooves 110 as an example, for example, two connecting ribs 120 are disposed in the magnetic steel groove 110, the two connecting ribs 120 are respectively located at two sides of the d-axis along the circumferential direction of the rotor core 10, the two connecting ribs 120 are symmetrically disposed about the d-axis, the two connecting ribs 120 are perpendicular to the first wall surface 113 (also perpendicular to the second wall surface 114), and the two connecting ribs 120 divide the magnetic steel groove 110 into three groove segments sequentially disposed along the circumferential direction of the rotor core 10.
Alternatively, in other embodiments, three connecting ribs 120 may be disposed in the magnetic steel groove 110, where one connecting rib 120 is disposed along and located at the d-axis, and the other two connecting ribs 120 are respectively located at both sides of the d-axis along the circumferential direction of the rotor core 10 and symmetrically disposed about the d-axis, so that the three connecting ribs 120 divide the magnetic steel groove 110 into four rectilinear groove segments. Of course, four, five or more connecting ribs 120 may be disposed in each magnetic steel groove 110, and will not be described herein.
Therefore, by providing the connecting rib 120 between the first wall surface 113 and the second wall surface 114, on the one hand, a connection structure can be added between a part of the rotor sheet 100 located near the rotation axis of the rotor core 10 and a part of the rotor sheet 100 located between the magnet steel groove 110 and the outer peripheral wall of the rotor core 10, so as to improve the structural stability of the rotor sheet 100, and on the other hand, a path of the demagnetizing field, that is, a part of the flux of the demagnetizing field, can be increased to pass through the connecting rib 120, so that the flux of the demagnetizing field passing through the magnet steel body 210 can be reduced, the field pressure of the demagnetizing field borne by the magnet steel body 210 can be reduced, and the stability of the permanent magnetic field can be improved.
Referring to fig. 4, it can be understood that the connecting rib 120 has a third wall surface 121 and a fourth wall surface 122 facing away from each other in the circumferential direction of the rotor core 10, and defines a minimum distance L 1 between the third wall surface 121 and the fourth wall surface 122, and generally, the third wall surface 121 is parallel to the fourth wall surface 122, and thus, the distance between the third wall surface 121 and the fourth wall surface 122 is also the minimum distance. When measuring L 1, two callipers are directly clamped on the third wall surface 121 and the fourth wall surface 122 by the two callipers feet of the vernier caliper, and the length direction of the main rule of the vernier caliper is ensured to be perpendicular to the third wall surface 121 or the fourth wall surface 122, and the reading of the main rule is the value of L 1. It is to be readily understood that L 1 can be understood as the minimum width of the tie bar 120.
Referring to fig. 6, it can be understood that the magnetic steel body 210 has a fifth wall surface 211 and a sixth wall surface 212 facing away from each other, the fifth wall surface 211 facing one of the first wall surface 113 and the second wall surface 114, and the sixth wall surface 212 facing the other. Defining a fifth wall surface 211 facing the first wall surface 113, a sixth wall surface 212 facing the second wall surface 114, and a minimum distance between the fifth wall surface 211 and the sixth wall surface 212 is L 2. Generally, the fifth wall surface 211 and the sixth wall surface 212 are parallel, and the fifth wall surface 211 and the sixth wall surface 212 are parallel to the width direction of the magnetic steel body 210, and the distance between the fifth wall surface 211 and the sixth wall surface 212 is also the minimum distance L 2,L2. When measuring L 2, two callipers are directly clamped on the fifth wall 211 and the sixth wall 212 by the two callipers, and the length direction of the main rule of the vernier is ensured to be perpendicular to the fifth wall 211 or the sixth wall 212, and the reading is the value of L 2.
It is understood that, in general, the magnetic steel body 210 can be just mounted between the first wall 113 and the second wall 114, that is, the fifth wall 211 is attached to the first wall 113, and the sixth wall 212 is attached to the second wall 114, that is, the distance between the first wall 113 and the second wall 114 is substantially equal to L 2.
Referring to fig. 3, 4 and 6, it can be understood that the minimum width L 1 of the connecting rib 120 and the minimum thickness L 2 of the magnetic steel body 210 satisfy: 3.ltoreq.L 2/L1.ltoreq.6, that is, the ratio of the minimum thickness of the magnetic steel body 210 to the minimum width of the connecting rib 120 is 3 to 6 (including 3 and 6). For example, L 2/L1 has a value of 3, 4, 4.5, 5, 5.5, or 6, etc. If the value of L 2/L1 is too small, the minimum thickness of the magnetic steel body 210 will be too small, the magnetic load is small, the anti-demagnetizing capability is poor, the overload capability is insufficient, and the performance of the motor assembly is affected; if the value of L 2/L1 is too large, the connecting rib 120 has a long and narrow structure, on one hand, the structural strength of the connecting rib 120 is low, which affects the structural stability of the rotor punching 100, and on the other hand, the path of the demagnetizing field is narrow, which is not beneficial to reducing the magnetic field pressure of the demagnetizing field borne by the magnetic steel body 210. Therefore, the L 2/L1 is limited within a reasonable range, so that not only the anti-demagnetizing capability of the magnetic steel body 210 can be ensured to ensure the overload capability of the motor assembly, but also the magnetic field pressure of the demagnetizing field borne by the magnetic steel body 210 can be reduced.
Referring to fig. 4, it can be understood that the rotor sheet 100 is provided with a plurality of magnetism isolating groups, the number of magnetism isolating groups is equal to that of the magnetic steel grooves 110, and each magnetism isolating group is correspondingly disposed between each magnetic steel groove 110 and the outer contour of the rotor sheet 100, that is, the magnetism isolating group is located at one side of the magnetic steel groove 110 away from the rotation axis of the rotor core 10.
The following describes the structure of one of the magnetism isolating groups in detail with reference to the corresponding magnetic steel groove 110.
Referring to fig. 4, it can be understood that the magnetism isolating group includes a plurality of magnetism isolating grooves having an elongated structure, and the magnetism isolating grooves extend from the magnetic steel groove 110 toward the outer contour of the rotor sheet 100, the plurality of magnetism isolating grooves being arranged at intervals along the circumferential direction of the rotor core 10.
Referring to fig. 4, it can be understood that in the present embodiment, each magnetism isolating group includes six magnetism isolating grooves, the six magnetism isolating grooves are each two sub-groups and are respectively provided on both sides of the d-axis in the circumferential direction of the rotor core 10, and the magnetism isolating grooves of the two sub-groups are symmetrically arranged about the d-axis. The end of the magnetic isolation groove, which is close to the magnetic steel groove 110, is defined as a first end 131, and the end of the magnetic isolation groove, which is far away from the magnetic steel groove 110, is defined as a second end 132. The direction from the second end 132 to the first end 131 is the extending direction Z of the magnetic isolation slot. In any one of the magnetically isolated slots, the second end 132 is closer to the d-axis than the first end 131. The extending direction of the magnetism isolating groove is limited to incline relative to the d axis, and the magnetism isolating group is wholly symmetrical relative to the d axis, so that the distribution of a demagnetizing magnetic field can be adjusted, armature reaction is effectively restrained, harmonic waves are weakened, and overload capacity of a motor assembly is improved. Meanwhile, the demagnetizing field is uniformly distributed, so that torque pulsation is reduced, and noise is reduced.
Referring to fig. 4, it may be understood that the magnetic steel groove 110 includes a first groove section 111 and a second groove section 112, the first groove section 111 and the second groove section 112 are both linear, and the first groove section 111 and the second groove section 112 are symmetrically arranged about a d-axis, and an included angle β between the first groove section 111 and the second groove section 112 toward the d-axis direction is defined, and the included angle β may be understood as a flare angle of the magnetic steel group 200. When β is measured, the angle of the V-shape formed by the projection of the second wall surface 114, that is, the angle of β, may be measured on a projection plane perpendicular to the axial direction of the rotor core 10.
Referring to fig. 4, it can be understood that, in the magnetism isolating group, a line defining first ends 131 of the plurality of magnetism isolating grooves located at one side of the d-axis along the circumferential direction of the rotor core 10 is a first line 150, a line defining first ends 131 of the plurality of magnetism isolating grooves located at the other side of the d-axis along the circumferential direction of the rotor core 10 is a second line 160, and an angle between the first line 150 and the second line 160 toward the d-axis direction is γ.
Referring to fig. 4, it can be understood that the included angle β and the included angle γ satisfy: on the one hand, the distribution of demagnetizing field can be further improved, on the other hand, the inhibiting effect on armature reaction can be further improved, harmonic waves are weakened, and overload capacity is improved.
Referring to fig. 4, it can be understood that two of the magnetic shield grooves in the magnetic shield group are a first magnetic shield groove 130 and a second magnetic shield groove 140, the first magnetic shield groove 130 and the second magnetic shield groove 140 are located on both sides of the d-axis in the circumferential direction of the rotor core 10, respectively, and the first magnetic shield groove 130 and the second magnetic shield groove 140 are closer to two q-axes adjacent to the d-axis than other magnetic shield grooves in the magnetic shield group, that is, the first magnetic shield groove 130 and the second magnetic shield groove 140 are two outermost magnetic shield grooves in the magnetic shield group in the circumferential direction of the rotor core 10. The included angle of the extending direction of the first magnetic isolation groove 130 and the second magnetic isolation groove 140 is defined as alpha, and the following conditions are satisfied: alpha is more than 90 degrees and less than or equal to 120 degrees. When α is measured, the angle between the wall surface of the first magnetic isolation slot 130 facing the d axis and the wall surface of the second magnetic isolation slot 140 facing the d axis is the angle α. That is, the distribution of demagnetizing field can be further improved by limiting the angle range of the included angle between the two magnetic isolation grooves at the outermost side, so that the waveform of the air gap field is further improved, the armature reaction is effectively inhibited, the harmonic wave is further weakened, and the overload capacity of the motor assembly is improved.
Referring to fig. 4, it can be understood that the maximum outer diameter of the rotor core 10 is defined as D 1, and when D 1 is measured, the distance between the two ends of the outer contour of the rotor core 10, which are furthest from each other, can be directly clamped by a vernier caliper along the radial direction of the rotor core 10. The motor assembly has a rotor pole pair number P, in this embodiment p=2. The maximum outer diameter D 1 and the rotor pole pair number P of the rotor core 10 satisfy: 8.ltoreq.D 1/P.ltoreq.16, that is, the ratio of the maximum outer diameter of the rotor core 10 to the number of pairs of rotor poles is defined to be 8 to 16 (including 8 and 16). For example, the value of D 1/P can be 8, 9, 10, 11, 12, 13, 14, 15, 16, etc. When D 1/P is too small, the size of each magnetic steel groove 110 along the circumferential direction of the rotor core 10 is too small, so that it is more difficult to replace one integral magnetic steel in the magnetic steel groove 110 with a plurality of magnetic steel bodies 210 sequentially arranged along the circumferential direction of the rotor core 10, that is, the degree of freedom of segmentation of the magnetic steel is small, which is not beneficial to improving the anti-demagnetization capability of the magnetic steel group 200. When D 1/P is too large, the number of pole pairs of the rotor is too small, and the problem of poor demagnetizing resistance and insufficient overload capacity exists in a structure with a few slot poles. Therefore, the ratio of the maximum outer diameter of the rotor core 10 to the number of pairs of rotor poles is limited within a reasonable range, so that the anti-demagnetization capability of the magnetic steel assembly 200 can be improved, the purpose of improving demagnetization can be achieved, and the magnetic field distribution can be optimized.
Referring to fig. 2, it can be understood that the maximum outer diameter D 2 of the stator core 20 and the minimum inner diameter D 3 of the stator core 20 are defined, satisfying: 0.52 < D 3/D2 < 0.7, i.e., the ratio of the minimum inner diameter to the maximum outer diameter of the stator core 20 is greater than 0.52 and less than 0.7. The value of D 3/D2 can be 0.55, 0.6, 0.65, 0.68, etc. The D 3/D2 is more than 0.52, the minimum inner diameter of the stator core can be increased, namely the outer diameter of the rotor core 10 is increased, the size of the magnetic steel groove 110 along the circumferential direction of the rotor core 10 can be increased, namely more installation space is provided for the magnetic steel group 200, the magnetic steel is more favorably segmented, the segmentation degree of freedom is large, the installation is easier, and the rotor manufacturability is improved. The D 3/D2 is smaller than 0.7, so that the radial width of the stator core 20 can be ensured, the rigidity of the stator core 20 is ensured, the stator core mode is improved, and the noise is reduced. Therefore, 0.52 < D 3/D2 < 0.7, on the premise of ensuring the rigidity of the stator core 20, the manufacturability of the rotor can be improved, the demagnetizing resistance of the magnetic steel set 200 can be conveniently improved, and the aim of improving demagnetization is fulfilled.
A compressor according to an embodiment of the second aspect of the present invention includes a motor assembly according to an embodiment of the first aspect of the present invention.
The compressor adopts all the technical schemes of the motor assembly of the embodiment, so the compressor has at least all the beneficial effects brought by the technical schemes of the embodiment.
The refrigerating apparatus according to an embodiment of the third aspect of the present invention, including the compressor according to the embodiment of the second aspect of the present invention, may be an air conditioner, a refrigerator, or the like.
The refrigeration equipment adopts all the technical schemes of the compressor of the embodiment, so that the refrigeration equipment has at least all the beneficial effects brought by the technical schemes of the embodiment.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (15)
1. Motor subassembly, its characterized in that includes:
The rotor iron core comprises a plurality of rotor punching sheets which are arranged in a stacking manner along the direction of a rotation axis, wherein the rotor punching sheets are provided with a plurality of magnetic steel grooves, and the magnetic steel grooves are arranged at intervals along the circumferential direction of the rotor iron core;
The magnetic steel groups are correspondingly arranged in the magnetic steel grooves, each magnetic steel group comprises a plurality of magnetic steel bodies, and the magnetic steel bodies are sequentially arranged along the circumferential direction;
In each magnetic steel group, the intrinsic coercivity of the magnetic steel body far away from the d axis in any two adjacent magnetic steel bodies is larger than that of the magnetic steel body close to the d axis.
2. The motor assembly of claim 1, wherein: in two adjacent magnet steel bodies, one magnet steel body is close to another one magnet steel body one end to keep away from another one magnet steel body the distance be the width of magnet steel body, every in the magnet steel group, in two arbitrary adjacent magnet steel bodies, keep away from in the d axle the width of magnet steel body is greater than near the d axle the width of magnet steel body.
3. The motor assembly of claim 1, wherein: along the d-axis direction, the magnetic steel groove is provided with a first wall surface and a second wall surface which are oppositely arranged, the rotor punching sheet comprises connecting ribs, and two ends of each connecting rib are respectively connected with the first wall surface and the second wall surface.
4. A motor assembly as claimed in claim 3, wherein: the number of the connecting ribs is equal to that of the magnetic steel grooves, the connecting ribs are arranged in the magnetic steel grooves in a one-to-one correspondence mode, and the central axes of the connecting ribs coincide with the d axes.
5. A motor assembly as claimed in claim 3, wherein: a plurality of connecting ribs are arranged in each magnetic steel groove, and the connecting ribs in each magnetic steel groove are arranged at intervals along the circumferential direction and symmetrically arranged about the d axis.
6. The motor assembly according to any one of claims 3 to 5, wherein: along circumference, the connecting rib has third wall face and the fourth wall face that keep away from, the minimum distance of third wall face with the fourth wall face is L 1, the magnet steel body has fifth wall face and the sixth wall face that keep away from, the fifth wall face towards first wall face, the sixth wall face towards the second wall face, the minimum distance of fifth wall face with the sixth wall face is L 2, satisfies: l 2/L1 is more than or equal to 3 and less than or equal to 6.
7. The motor assembly of claim 1, wherein: the rotor punching sheet is provided with a plurality of magnetism isolating groups, the magnetism isolating groups are respectively arranged between the magnetic steel grooves and the outer outline of the rotor punching sheet in a one-to-one correspondence mode, each magnetism isolating group comprises a plurality of magnetism isolating grooves, and the magnetism isolating grooves are arranged at intervals along the circumferential direction.
8. The motor assembly of claim 7, wherein: in each of the magnetism isolating groups, a plurality of magnetism isolating grooves are symmetrically arranged about the d-axis.
9. The motor assembly of claim 7 or 8, wherein: the end of the magnetism isolating groove, which is close to the magnetic steel groove, is a first end, the end of the magnetism isolating groove, which is far away from the magnetic steel groove, is a second end, and the second end is closer to the d axis than the first end.
10. The motor assembly of claim 9, wherein: the magnetic steel groove comprises a first groove section and a second groove section which are symmetrically arranged relative to a d axis, an included angle between the first groove section and the second groove section towards the d axis direction is beta, in each magnetism isolating group, a plurality of connecting lines of the first ends of the magnetism isolating grooves positioned on one side of the d axis are first connecting lines, a plurality of connecting lines of the first ends of the magnetism isolating grooves positioned on the other side of the d axis are second connecting lines, and an included angle between the first connecting lines and the second connecting lines towards the d axis direction is gamma, so that the following conditions are satisfied: 90 DEG < gamma < beta.
11. The motor assembly of claim 9, wherein: the direction from the second end to the first end is the extending direction of the magnetism isolating grooves, two magnetism isolating grooves of the magnetism isolating group are a first magnetism isolating groove and a second magnetism isolating groove, the first magnetism isolating groove and the second magnetism isolating groove are respectively positioned at two sides of the d axis along the circumferential direction, and along the circumferential direction, the first magnetism isolating groove and the second magnetism isolating groove are respectively closer to two q axes adjacent to the d axis, and an included angle between the extending direction of the first magnetism isolating groove and the extending direction of the second magnetism isolating groove is alpha, so that the following conditions are satisfied: alpha is more than 90 degrees and less than or equal to 120 degrees.
12. The motor assembly of claim 1, wherein: the maximum external diameter of the rotor core is D 1, the rotor pole pair number of the motor component is P, and the requirements are satisfied: d 1/P is less than or equal to 8 and less than or equal to 16.
13. The motor assembly of claim 1, wherein: the motor assembly further comprises a stator core, the stator core is wound on the periphery of the rotor core, the maximum outer diameter of the stator core is D 2, the minimum inner diameter of the stator core is D 3, and the requirements are met: d 3/D2 is more than 0.52 and less than 0.7.
14. Compressor, characterized by comprising a motor assembly according to any one of claims 1 to 13.
15. Refrigeration apparatus comprising a compressor as recited in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410077409.7A CN117895683A (en) | 2024-01-18 | 2024-01-18 | Motor assembly, compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410077409.7A CN117895683A (en) | 2024-01-18 | 2024-01-18 | Motor assembly, compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117895683A true CN117895683A (en) | 2024-04-16 |
Family
ID=90647197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410077409.7A Pending CN117895683A (en) | 2024-01-18 | 2024-01-18 | Motor assembly, compressor and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117895683A (en) |
-
2024
- 2024-01-18 CN CN202410077409.7A patent/CN117895683A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8937420B2 (en) | Rotor of permanent magnet embedded motor, blower, and compressor | |
| US9502934B2 (en) | Motor rotor and motor having same | |
| US20140167550A1 (en) | Motor rotor and motor having same | |
| JP5208084B2 (en) | Rotor, blower and compressor of embedded permanent magnet motor | |
| WO2019215865A1 (en) | Rotor, motor, compressor, and air conditioning device | |
| WO2020125066A1 (en) | Tangential motor, motor rotor and rotor core | |
| CN111711292A (en) | Rotor structure, motor and compressor | |
| EP4178081A1 (en) | Electric motor rotor and electric motor | |
| CN110620456A (en) | Rotor core, permanent-magnet machine and compressor | |
| CN112436625B (en) | Rotor, motor, compressor and refrigeration plant | |
| CN117895683A (en) | Motor assembly, compressor and refrigeration equipment | |
| CN212435453U (en) | Rotor structure, motor and compressor | |
| CN112134385B (en) | Motor, compressor and refrigeration plant | |
| CN210167872U (en) | Rotor, motor, compressor and refrigeration plant | |
| JP7019033B2 (en) | Motors, compressors and air conditioners | |
| CN112003401A (en) | Rotor, motor, compressor, air conditioner and vehicle | |
| CN107046353B (en) | Motor and compressor with same | |
| CN112003399A (en) | Rotor, motor, compressor, air conditioner and vehicle | |
| CN220067014U (en) | Motor rotor and motor | |
| CN221042419U (en) | Motor, compressor and refrigeration equipment | |
| CN220067015U (en) | Motor rotor and motor | |
| CN218124422U (en) | Rotor and hybrid synchronous reluctance motor | |
| CN216216147U (en) | Motor rotor, motor, centrifugal compressor and air conditioner | |
| CN221042431U (en) | Rotor punching sheet, motor, compressor and refrigeration equipment | |
| CN212304903U (en) | Stator, motor, compressor and refrigeration plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |