Magnetic member, rotating electric machine, compressor, blower, refrigeration device and method for manufacturing magnetic material

Abstract

This magnetic member includes a laminate in which a plurality of plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystal soft magnetic materials, are laminated. The magnetic material has a bent deformation region. The ratio of crystals per unit volume of the deformation region of the magnetic material is higher than the ratio of crystals per unit volume of the magnetic material.

Description

Magnetic member, rotating electrical machine, compressor, blower, refrigeration device, and method for manufacturing magnetic material

[0001] The present disclosure relates to a magnetic member, a rotating electrical machine, a compressor, a blower, a refrigeration device, and a method for manufacturing a magnetic material.

[0002] Patent Document 1 discloses a stator including a first core made of an electromagnetic steel sheet and a second core made of an amorphous metal or a nanocrystalline metal.

[0003] International Publication No. 2018 / 138864

[0004] Soft magnetic materials are used in magnetic components used in devices such as motors and transformers. As soft magnetic materials having excellent properties such as low loss and high magnetic flux density, amorphous soft magnetic materials and nanocrystalline soft magnetic materials have been developed.

[0005] It is required to use amorphous soft magnetic materials and nanocrystalline soft magnetic materials as soft magnetic materials. Amorphous soft magnetic materials and nanocrystalline soft magnetic materials are brittle. Therefore, when amorphous soft magnetic materials and nanocrystalline soft magnetic materials are used as magnetic members, it is difficult to process magnetic members composed of amorphous soft magnetic materials and nanocrystalline soft magnetic materials.

[0006] The present disclosure provides a technique for improving the workability of a magnetic member composed of an amorphous soft magnetic material and a nanocrystalline soft magnetic material.

[0007] The magnetic member according to the first aspect includes a laminate in which a plurality of plate-like magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the magnetic material has a bent deformation region, and the ratio of crystals per unit volume of the deformation region of the magnetic material is larger than the ratio of crystals per unit volume of the magnetic material. It is a magnetic member.

[0008] According to the magnetic member of the first aspect, the workability of the bent deformation region in the laminate in which a plurality of plate-like magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated can be improved.

[0009] The magnetic member in the second view is the magnetic member in the first view, wherein the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of the magnetic materials are joined together by the deformation region.

[0010] According to the magnetic member of the second perspective, the processability of bending in the thickness direction of a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0011] The magnetic member in the third view is the magnetic member in the first or second view, wherein the deformation region is smoothly bent.

[0012] According to the magnetic material of the third perspective, in a laminate formed by stacking multiple plate-shaped magnetic materials, such as amorphous soft magnetic material or nanocrystalline soft magnetic material, the processability for smooth bending can be improved.

[0013] The magnetic member of the fourth viewpoint is the magnetic member of the first or second viewpoint, wherein the deformation region is a region that is bent so that the surface is smoothly concave.

[0014] According to the magnetic member of the fourth perspective, in a laminate formed by stacking multiple plate-shaped magnetic materials, such as amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of bending the surface to create a smooth indentation can be improved.

[0015] The magnetic member in the fifth viewpoint is a magnetic member according to any of the first to fourth viewpoints, wherein the deformation region is a region bent in the thickness direction or surface direction of the magnetic material.

[0016] According to the magnetic member of the fifth perspective, in a laminate formed by stacking multiple plate-shaped magnetic materials, such as amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of bending in the thickness direction or the surface direction can be improved.

[0017] The magnetic member in the sixth aspect is the magnetic member in the first aspect, wherein the magnetic material is held by a holding member under stress, and the deformation region is a region bent by the stress from the holding member.

[0018] According to the magnetic member of the sixth perspective, in a laminate formed by stacking multiple plate-shaped magnetic materials, such as amorphous soft magnetic materials or nanocrystalline soft magnetic materials, cracking of the laminate in the portion held by the holding member can be prevented.

[0019] The rotating electric machine according to the first viewpoint is a rotating electric machine comprising a magnetic member according to any of the first to sixth viewpoints, wherein the magnetic member is a stator core or a rotor core.

[0020] According to the first aspect of the rotating electric machine, in a rotating electric machine equipped with a laminate of multiple plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of the plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials can be improved.

[0021] The compressor in the first view is a compressor comprising a rotating electric machine in the first view and a compression mechanism driven by the rotating electric machine.

[0022] According to the first aspect of the compressor, in a compressor equipped with a laminate formed by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of the plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0023] The blower according to the first perspective is a blower comprising a rotating electric machine according to the first perspective and a fan driven by the rotating electric machine.

[0024] According to the blower of the first viewpoint, in a blower equipped with a laminate formed by stacking multiple plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of the plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials can be improved.

[0025] The refrigeration apparatus of the first perspective is a refrigeration apparatus that includes a rotating electric machine of the first perspective.

[0026] According to the first aspect of the refrigeration apparatus, in a refrigeration apparatus comprising a laminate formed by stacking multiple plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, the processability of the plate-shaped magnetic materials which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials can be improved.

[0027] A method for manufacturing a magnetic member according to the first aspect is a method for manufacturing a magnetic member including a laminate in which a plurality of plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, are stacked, comprising: a first step of heating a part of the magnetic material to a temperature above the crystallization temperature of the magnetic material; and a second step of bending the magnetic material within the part of the magnetic material after the first step.

[0028] According to the manufacturing method of the magnetic member of the first aspect, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0029] Figure 1 is a perspective view of a magnetic member according to the first embodiment. Figure 2 is a plan view of the magnetic member according to the first embodiment, viewed from the thickness direction. Figure 3 is a cross-sectional view of the magnetic member according to the first embodiment. Figure 4 is a flowchart showing a method for manufacturing the magnetic member according to the first embodiment. Figure 5 is a diagram illustrating the process for manufacturing the magnetic member according to the first embodiment. Figure 6 is a diagram illustrating the process for manufacturing the magnetic member according to the first embodiment. Figure 7 is a perspective view of a modified example of the magnetic member according to the first embodiment. Figure 8 is a plan view of a modified example of the magnetic member according to the first embodiment, viewed from the thickness direction. Figure 9 is a cross-sectional view of a modified example of the magnetic member according to the first embodiment. Figure 10 is a perspective view of a magnetic member according to the second embodiment. Figure 11 is a plan view of the magnetic member according to the second embodiment, viewed from the thickness direction. Figure 12 is a cross-sectional view of the magnetic member according to the second embodiment. Figure 13 is a perspective view of a modified example of the magnetic member according to the second embodiment. Figure 14 is a plan view of a modified example of the magnetic member according to the second embodiment, viewed from the thickness direction. Figure 15 is a cross-sectional view of a modified example of the magnetic member according to the second embodiment. Figure 16 is a perspective view of a magnetic member according to the third embodiment. Figure 17 is a plan view of the magnetic member according to the third embodiment, viewed from the thickness direction. Figure 18 is a cross-sectional view of the magnetic member according to the third embodiment. Figure 19 is a perspective view of the magnetic member according to the fourth embodiment. Figure 20 is a plan view of the magnetic member according to the fourth embodiment, viewed from the thickness direction. Figure 21 is a cross-sectional view of the magnetic member according to the fourth embodiment. Figure 22 is a perspective view of a first modified example of the magnetic member according to the fourth embodiment. Figure 23 is a plan view of a first modified example of the magnetic member according to the fourth embodiment, viewed from the thickness direction. Figure 24A is a cross-sectional view of a first modified example of the magnetic member according to the fourth embodiment. Figure 24B is a cross-sectional view of a first modified example of the magnetic member according to the fourth embodiment. Figure 25 is a perspective view of a second modified example of the magnetic member according to the fourth embodiment. Figure 26 is a plan view of a second modified example of the magnetic member according to the fourth embodiment, viewed from the thickness direction. Figure 27A is a cross-sectional view of a second modified example of the magnetic member according to the fourth embodiment. Figure 27B is a cross-sectional view of a second modified example of the magnetic member according to the fourth embodiment. Figure 28 is a perspective view of the magnetic member according to the fifth embodiment. Figure 29 is a plan view of the magnetic member according to the fifth embodiment, as seen from the thickness direction.Figure 30 is a cross-sectional view of the magnetic member according to the fifth embodiment. Figure 31 is a cross-sectional view of a compressor using the magnetic member according to the sixth embodiment. Figure 32 is a cross-sectional view of the cylinder portion of the compressor using the magnetic member according to the sixth embodiment. Figure 33 is a cross-sectional view of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 34 is a diagram illustrating the heat treatment in the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 35 is a diagram illustrating a first modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 36 is a diagram illustrating a second modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 37 is a diagram illustrating a third modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 38 is a diagram illustrating a fourth modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 39 is a diagram illustrating a fifth modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 40 is a diagram illustrating a sixth modified example of the rotating electromechanical portion of the compressor using the magnetic member according to the sixth embodiment. Figure 41 illustrates a rotating electric machine for a compressor using a magnetic member according to the seventh embodiment. Figure 42 illustrates a heat treatment of a rotating electric machine for a compressor using a magnetic member according to the seventh embodiment. Figure 43 illustrates a rotating electric machine for a compressor using a magnetic member according to the eighth embodiment. Figure 44 illustrates a rotating electric machine for a compressor using a magnetic member according to the ninth embodiment. Figure 45 illustrates a rotating electric machine for a compressor using a magnetic member according to the tenth embodiment. Figure 46 illustrates an example of use of a rotating electric machine using a magnetic member according to the eleventh embodiment.

[0030] The embodiments will be described below with reference to the attached drawings. Note that, in the description and drawings of each embodiment, components having substantially the same or corresponding functional configurations may be denoted by the same reference numerals, thereby omitting redundant explanations. Furthermore, for ease of understanding, the scale of each part in the drawings may differ from that of the actual parts.

[0031] The magnetic members of this disclosure will now be described. The magnetic members of this disclosure include a laminate formed by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials. The magnetic materials in the magnetic members of this disclosure have a bent deformation region. The ratio of crystals per unit volume of the deformation region of the magnetic material in the magnetic members of this disclosure is greater than the ratio of crystals per unit volume of the magnetic material.

[0032] The magnetic member of this disclosure will be described in detail with reference to the drawings.

[0033] <First Embodiment> A magnetic member according to the first embodiment will be described. The magnetic member according to the first embodiment is a magnetic member in which the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of magnetic materials are joined by the deformation region. In the magnetic member according to the first embodiment, a plurality of magnetic materials are joined by so-called V-crimping. The thickness direction is the thickness direction of the plate-shaped magnetic material. The surface direction is the direction along the surface of the plate-shaped magnetic material. The thickness direction and the surface direction are perpendicular to each other.

[0034] Figure 1 is a perspective view of a magnetic member 1, which is an example of a magnetic member according to the first embodiment. Figure 2 is a plan view of the magnetic member 1, which is an example of a magnetic member according to the first embodiment, as seen from the plate thickness direction. Figure 3 is a cross-sectional view of the magnetic member 1, which is an example of a magnetic member according to the first embodiment. Specifically, Figure 3 is a cross-sectional view of the cross section along the line I-I in Figure 2, as seen from the plate surface direction.

[0035] For ease of explanation, drawings sometimes include a virtual three-dimensional coordinate system (XYZ Cartesian coordinate system) consisting of mutually orthogonal X, Y, and Z axes (XYZ axes). For example, when a coordinate axis perpendicular to the plane of the drawing is shown with a black circle inside, it indicates that the coordinate axis points from the back to the front of the drawing. Conversely, when a coordinate axis is shown with an X inside, it indicates that the coordinate axis points from the front to the back of the drawing.

[0036] However, this coordinate system is defined for illustrative purposes only and is not limited to the orientation of the magnetic member, etc., according to the first embodiment.

[0037] In the following drawings, the Z-axis direction represents the thickness direction of the magnetic material, and the X-axis and Y-axis directions represent the surface direction of the magnetic material.

[0038] The magnetic member 1 is a magnetic member used in, for example, motors, generators, transformers, noise filters, and choke coils. The magnetic member 1 comprises a laminate 10 in which a plurality of plate-shaped magnetic materials 11 are stacked in the thickness direction. The plurality of magnetic materials 11 are joined together by fitting together the protrusions and recesses formed on the plurality of magnetic materials 11. The plurality of magnetic materials 11 have crimping portions 12 for fitting together.

[0039] As shown in Figure 3, the crimped portion 12 has a V-shaped cross-section. The crimped portion 12 has a rectangular shape when viewed from the plate thickness direction. Multiple magnetic materials 11 are joined by the crimped portion 12 using a so-called V-crimping method. The crimped portion 12 is formed by bending. The region where the crimped portion 12 is formed becomes the deformation region R1.

[0040] The laminate 10 in the magnetic member 1 comprises magnetic material 11. The number of magnetic materials in the laminate in the magnetic member according to the first embodiment is not limited to the example of laminate 10. The number of magnetic materials in the laminate in the magnetic member according to the first embodiment may be 2 or 4 or more. Furthermore, the shape of the magnetic material 11 is not limited to the shapes in Figures 1 to 3. In addition, the number of crimped portions 12 may also be multiple.

[0041] The magnetic material 11 is an amorphous soft magnetic material or a nanocrystalline soft magnetic material. The amorphous soft magnetic material or nanocrystalline soft magnetic material used in the magnetic material 11 is composed of, for example, at least one magnetic metal selected from the group consisting of iron, cobalt, and nickel, and at least one non-magnetic metal. The at least one non-magnetic metal is selected from the group consisting of, for example, boron, carbon, phosphorus, aluminum, silicon, titanium, vanadium, chromium, manganese, copper, yttrium, zirconium, niobium, molybdenum, hafnium, tantalum, and tungsten. The amorphous soft magnetic material or nanocrystalline soft magnetic material in the magnetic member according to the first embodiment is not limited to the above examples.

[0042] Typical materials of the amorphous soft magnetic material or the nanocrystalline soft magnetic material used for the magnetic material 11 are, for example, iron-cobalt alloys, iron-nickel alloys, iron-aluminum alloys, iron-silicon alloys, iron-tantalum alloys or iron-zirconium alloys. The iron-cobalt alloys are, for example, Fe·Co alloys, Fe·Co·V alloys. The iron-nickel alloys are, for example, Fe·Ni alloys, Fe·Ni·Mo alloys, Fe·Ni·Cr alloys, Fe·Ni·Si alloys. The iron-aluminum alloys or the iron-silicon alloys are, for example, Fe·Al alloys, Fe·Al·Si alloys, Fe·Al·Si·Cr alloys, Fe·Al·Si·Ti·Ru alloys, Fe·Al·O alloys. The iron-tantalum alloys are, for example, Fe·Ta alloys, Fe·Ta·C alloys, Fe·Ta·N alloys. The iron-zirconium alloys are, for example, Fe·Zr·N alloys.

[0043] Moreover, typical materials of the amorphous soft magnetic material or the nanocrystalline soft magnetic material used for the magnetic material 11 may be, for example, cobalt alloys containing at least one kind selected from the group consisting of zirconium, hafnium, niobium, tantalum, titanium and yttrium. The cobalt alloy preferably contains 80 at% or more of cobalt. The cobalt alloy containing 80 at% or more of cobalt is likely to become amorphous when forming a film. In addition, the cobalt alloy containing 80 at% or more of cobalt has very excellent magnetic properties because of having less crystal magnetic anisotropy, crystal defects and grain boundaries. Suitable cobalt alloys as the amorphous soft magnetic material are, for example, Co·Zr alloys, Co·Zr·Nb alloys, Co·Zr·Ta alloys.

[0044] The amorphous soft magnetic material has an amorphous structure as the main structure. When observing the X-ray diffraction pattern of the amorphous soft magnetic material, the X-ray diffraction pattern has no distinct peak. When observing the X-ray diffraction pattern of the amorphous soft magnetic material, it has a broad halo pattern.

[0045] The nanocrystalline soft magnetic material is formed by subjecting an amorphous soft magnetic material having an amorphous structure to a heat treatment. The nanocrystalline soft magnetic material is a soft magnetic material obtained by heat-treating an amorphous soft magnetic material to precipitate nanocrystals. The nanocrystalline soft magnetic material has a nanocrystalline structure. The nanocrystals are polycrystals with a particle size of several nanometers to several tens of nanometers.

[0046] When observing the X-ray diffraction pattern of the nanocrystalline soft magnetic material, it has an X-ray diffraction peak at a position corresponding to the lattice spacing of the crystal plane. The crystallite size can be calculated from the width of the X-ray diffraction peak using Scherrer's formula. Nanocrystals refer to those with a crystallite size calculated by Scherrer's formula from the half-value width of the diffraction peak of X-ray diffraction less than 1 micrometer. In the present disclosure, the crystallite size of the nanocrystals (the crystallite size calculated by Scherrer's formula from the half-value width of the diffraction peak of X-ray diffraction) is preferably 100 nanometers or less, more preferably 50 nanometers or less. Also, the crystallite size of the nanocrystals is preferably 5 nanometers or more.

[0047] The nanocrystalline soft magnetic material can improve its magnetic properties because the crystallite size of the nanocrystals is 100 nanometers or less as described above. Note that the crystallite size of conventional electromagnetic steel sheets is on the order of micrometers, and generally, it is 50 micrometers or more.

[0048] It is known that when each of the amorphous soft magnetic material and the nanocrystalline soft magnetic material is heated to a temperature above the crystallization temperature, crystallization proceeds due to the generation of crystal nuclei and the growth of crystal grains (coarsening of the particle size).

[0049] When crystallization proceeds in each of the amorphous soft magnetic material and the nanocrystalline soft magnetic material, changes in mechanical properties such as a decrease in Vickers hardness and an increase in ductility or malleability occur in the region where crystallization has proceeded.

[0050] Amorphous soft magnetic materials are hard and brittle. Nanocrystalline soft magnetic materials are brittle and prone to cracking. Because amorphous and nanocrystalline soft magnetic materials are brittle, processing involving deformation has been difficult. Therefore, the inventors discovered that by heating the deformation region to promote crystallization, the mechanical properties in the deformation region can be changed, making it possible to process amorphous and nanocrystalline soft magnetic materials with deformation.

[0051] To explain in more detail, in Figure 2, the magnetic material 11 is heated so as to include a deformation region R1 in which the crimped portion 12 is formed.

[0052] A method for manufacturing a magnetic material according to the first embodiment will now be described. Figure 4 is a flowchart showing the method for manufacturing a magnetic member according to the first embodiment.

[0053] (Step S10) A plate-shaped magnetic material, which is an amorphous soft magnetic material or a nanocrystalline soft magnetic material, is placed on top.

[0054] (Step S20) Next, a portion of the magnetic material is heated. The portion of the magnetic material to be heated is the region of the magnetic material to be processed. The region of the magnetic material to be processed is the region to be bent. The region of the magnetic material to be processed is the region that includes the deformation region R1. The portion of the magnetic material to be processed is heated so that the crystallization temperature of the magnetic material is, for example, 400°C or higher. Heating is performed, for example, by bringing a heated jig into contact with the area to be heated (heating area). Alternatively, heating may be performed, for example, by irradiating the heating area with a laser. Alternatively, heating may be performed, for example, by irradiating the heating area with high-frequency electromagnetic waves, so-called induction heating.

[0055] The process in step S20 will be explained using magnetic member 1, which is an example of a magnetic member according to the first embodiment. Figure 5 is a diagram illustrating the process for manufacturing a magnetic member according to the first embodiment. Figure 5 shows the magnetic material 11i in the state before the formation of the magnetic material 11 that constitutes the magnetic member 1. The magnetic material 11i is in a state where the crimped portion 12 has not yet been formed.

[0056] Figure 6 is a diagram illustrating the process for manufacturing a magnetic member according to the first embodiment. Figure 6 shows a region where the magnetic material 11i is heated. In the magnetic material 11i, a heating region H1 is heated, which includes a deformation region R1 where the crimped portion 12 is formed. The heating region H1 in Figure 6 corresponds to the heating region H1 in Figure 2. By heating the heating region H1 in the magnetic material 11i, crystallization of the magnetic material 11i in the heating region H1 progresses.

[0057] Specifically, the heating region H1 of the magnetic material 11i is heated to a temperature above its crystallization temperature. In the heating region H1, i.e., the deformation region R1, which is heated to a temperature above its crystallization temperature, crystallization of the magnetic material 11 progresses. The ratio of crystals per unit volume in the heated heating region H1 of the magnetic material 11i is greater than the ratio of crystals per unit volume in the unheated region of the magnetic material 11i. The ratio of crystals per unit volume is the proportion of crystals that occupy a unit volume. The ratio of crystals per unit volume in a given region can be calculated, for example, by (sum of the volume of crystals included in the given region) ÷ (volume of the given region). The ratio of crystals per unit volume in the heating region H1 of the magnetic material 11i is greater than the ratio of crystals per unit volume in the entire region of the magnetic material 11i. The ratio of crystals per unit volume in the deformation region R1 of the magnetic material 11i is greater than the ratio of crystals per unit volume in the region of the magnetic material 11i other than the deformation region R1. The ratio of crystals per unit volume in the deformation region R1 of the magnetic material 11i is greater than the ratio of crystals per unit volume in the entire region of the magnetic material 11i.

[0058] A large ratio of crystals per unit volume means, for example, that the ratio of the volume of crystals per unit volume in the deformation region R1, which is a subregion of the magnetic material 11i, is larger than the ratio of the volume of crystals per unit volume in the entire region of the magnetic material 11i. A large ratio of crystals per unit volume means, for example, that the number of crystals per unit volume in the deformation region R1, which is a subregion of the magnetic material 11i, is greater than the number of crystals per unit volume in the entire region of the magnetic material 11i. Furthermore, a large ratio of crystals per unit volume means, for example, that when the magnetic material 11i is a nanocrystalline soft magnetic material, the average grain size of the crystals in the deformation region R1 is larger than the average grain size of the crystals in the entire region of the magnetic material 11i.

[0059] (Step S30) After step S20, the heated region of the magnetic material is bent. The heated region H1 of the magnetic material 11i is bent. The bending is performed, for example, by applying pressure with a press machine.

[0060] (Step S40) After step S30, the processed magnetic material is laminated.

[0061] (Step S50) After step S40, it is determined whether the specified number of sheets have been stacked. If the specified number of sheets have been stacked (YES in step S50), the process ends. If the specified number of sheets have not been stacked (NO in step S50), the process returns to step S10 and is repeated.

[0062] [Modified Forms] Modified forms of the magnetic material according to the first embodiment will be described. In the modified form of the magnetic material according to the first embodiment, the crimped portion is circular when viewed from the plate thickness direction. Figure 7 is a perspective view of a magnetic member 2, which is an example of a modified form of the magnetic member according to the first embodiment. Figure 8 is a plan view of the magnetic member 2, which is an example of a modified form of the magnetic member according to the first embodiment, as seen from the plate thickness direction. Figure 9 is a cross-sectional view of the magnetic member 2, which is an example of a modified form of the magnetic member according to the first embodiment. Specifically, Figure 9 is a cross-sectional view of the cross section along line II-II in Figure 8, as seen from the plate surface direction.

[0063] The magnetic member 2 comprises a laminate 20 in which multiple plate-shaped magnetic materials 21 are stacked in the thickness direction. The multiple magnetic materials 21 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 21. The multiple magnetic materials 21 have crimping portions 22 for fitting together.

[0064] As shown in Figure 9, the crimping portion 22 has a V-shaped cross-section. The crimping portion 22 has a circular shape when viewed from the plate thickness direction. Multiple magnetic materials 21 are joined by the crimping portion 22 using a so-called V-crimping method. The crimping portion 22 is formed by bending. The region in which the crimping portion 22 is formed becomes the deformation region R2. In the magnetic member 2, the heating region H2, which includes the deformation region R2, is heated.

[0065] According to the magnetic member of the first embodiment, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0066] <Second Embodiment> A magnetic material according to the second embodiment will be described. The magnetic member according to the second embodiment is a magnetic material in which the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of magnetic materials are joined by the deformation region. In the magnetic member according to the second embodiment, a plurality of magnetic materials are joined by so-called dowel crimping.

[0067] Figure 10 is a perspective view of a magnetic member 3, which is an example of a magnetic member according to the second embodiment. Figure 11 is a plan view of the magnetic member 3, which is an example of a magnetic member according to the second embodiment, as seen from the plate thickness direction. Figure 12 is a cross-sectional view of the magnetic member 3, which is an example of a magnetic member according to the second embodiment. Specifically, Figure 12 is a cross-sectional view of the cross section along the line III-III in Figure 11, as seen from the plate surface direction.

[0068] The magnetic member 3 comprises a laminate 30 in which multiple plate-shaped magnetic materials 31 are stacked in the thickness direction. The multiple magnetic materials 31 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 31. The multiple magnetic materials 31 have crimping portions 32 for fitting together.

[0069] As shown in Figure 12, the crimped portion 32 has a stepped cross-section. The crimped portion 32 has a rectangular shape when viewed from the plate thickness direction. Multiple magnetic materials 31 are joined by the crimped portion 32 using a so-called dowel crimping method. The crimped portion 32 is formed by bending. The region in which the crimped portion 32 is formed becomes the deformation region R3. In the magnetic member 3, the heating region H3, which includes the deformation region R3, is heated.

[0070] [Modified Examples] Modified examples of the magnetic material according to the second embodiment will now be described. In the modified example of the magnetic material according to the second embodiment, the crimped portion is circular when viewed from the plate thickness direction. Figure 13 is a perspective view of a magnetic member 4, which is an example of a modified example of the magnetic member according to the second embodiment. Figure 14 is a plan view of the magnetic member 4, which is an example of a modified example of the magnetic member according to the second embodiment, as seen from the plate thickness direction. Figure 15 is a cross-sectional view of the magnetic member 4, which is an example of a modified example of the magnetic member according to the second embodiment. Specifically, Figure 15 is a cross-sectional view of the cross section along the line IV-IV in Figure 14, as seen from the plate surface direction.

[0071] The magnetic member 4 comprises a laminate 40 in which multiple plate-shaped magnetic materials 41 are stacked in the thickness direction. The multiple magnetic materials 41 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 41. The multiple magnetic materials 41 have crimping portions 42 for fitting together.

[0072] As shown in Figure 15, the crimped portion 42 has a stepped cross-section. The crimped portion 42 has a circular shape when viewed from the plate thickness direction. The laminate 40 is joined by the crimped portion 42 using a so-called dowel crimping method. The crimped portion 42 is formed by bending. The region in which the crimped portion 42 is formed becomes the deformation region R4. In the magnetic member 4, the magnetic material 41 is heated in the heating region H4 which includes the deformation region R4.

[0073] According to the magnetic member of the second embodiment, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0074] <Third Embodiment> A magnetic material according to the third embodiment will be described. The magnetic member according to the third embodiment is a magnetic material in which the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of magnetic materials are joined by the deformation region. In the magnetic member according to the third embodiment, a plurality of magnetic materials are joined by bending.

[0075] Figure 16 is a perspective view of a magnetic member 5, which is an example of a magnetic member according to the third embodiment. Figure 17 is a plan view of the magnetic member 5, which is an example of a magnetic member according to the third embodiment, as seen from the plate thickness direction. Figure 18 is a cross-sectional view of the magnetic member 5, which is an example of a magnetic member according to the third embodiment. Specifically, Figure 18 is a cross-sectional view of the cross section along the line V-V in Figure 17, as seen from the plate surface direction.

[0076] The magnetic member 5 comprises a laminate 50 in which multiple plate-shaped magnetic materials 51 are stacked in the thickness direction. The multiple magnetic materials 51 are joined together by bending them. The multiple magnetic materials 51 have crimping portions 52 for fitting together.

[0077] As shown in Figure 18, the crimping portion 52 has a claw-like shape with one end in the plate surface direction bent in the plate thickness direction and the other end in the plate surface direction cut off. The crimping portion 52 has a rectangular shape when viewed from the plate thickness direction. Multiple magnetic materials 51 are joined by the crimping portion 52. The crimping portion 52 is formed by bending. The region in which the crimping portion 52 is formed becomes a deformation region R5. In the magnetic member 5, the heating region H5, which includes the deformation region R5, is heated.

[0078] According to the magnetic member of the third embodiment, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0079] <Fourth Embodiment> The magnetic material according to the fourth embodiment will now be described. The magnetic member according to the fourth embodiment is a magnetic material in which the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of magnetic materials are joined by the deformation region. In the magnetic member according to the fourth embodiment, a plurality of magnetic materials are joined by crimping. In the magnetic member according to the fourth embodiment, the crimped portion is formed by bending the surface smoothly. Smooth bending means, for example, that the curvature of the bent portion is bent to a predetermined value or less. Smooth bending means, for example, that the cross-section of the bent portion is bent so that there are no folds or sharp points.

[0080] Figure 19 is a perspective view of a magnetic member 6, which is an example of a magnetic member according to the fourth embodiment. Figure 20 is a plan view of the magnetic member 6, which is an example of a magnetic member according to the fourth embodiment, as seen from the plate thickness direction. Figure 21 is a cross-sectional view of the magnetic member 6, which is an example of a magnetic member according to the fourth embodiment. Figure 21 is a cross-sectional view of the cross section along the line VI-VI in Figure 20, as seen from the plate surface direction.

[0081] The magnetic member 6 comprises a laminate 60 in which multiple plate-shaped magnetic materials 61 are stacked in the thickness direction. The multiple magnetic materials 61 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 61. The multiple magnetic materials 61 have crimping portions 62 for fitting together.

[0082] As shown in Figure 21, the crimped portion 62 has a smoothly bent cross-section that is curved. The crimped portion 62 has a rectangular shape when viewed from the plate thickness direction. The laminate 60 is joined by the crimped portion 62. The crimped portion 62 is formed by bending. The region in which the crimped portion 62 is formed becomes the deformation region R6. In the magnetic member 6, the heating region H6, which includes the deformation region R6, is heated in the magnetic material 61.

[0083] [Modifications] A first modification of the magnetic material according to the fourth embodiment will be described. In the first modification of the magnetic material according to the fourth embodiment, the crimped portion is circular when viewed from the plate thickness direction. Figure 22 is a perspective view of a magnetic member 7, which is an example of the first modification of the magnetic member according to the fourth embodiment. Figure 23 is a plan view of the magnetic member 7, which is an example of the first modification of the magnetic member according to the fourth embodiment, as seen from the plate thickness direction. Figures 24A and 24B are cross-sectional views of the magnetic member 7, which is an example of the first modification of the magnetic member according to the fourth embodiment. Figure 24A is a cross-sectional view of the cross section along the line VII-VII in Figure 23, as seen from the plate surface direction. Figure 24B is a cross-sectional view of the cross section along the line VIIa-VIIa in Figure 23, as seen from the plate surface direction.

[0084] The magnetic member 7 comprises a laminate 70 in which multiple plate-shaped magnetic materials 71 are stacked in the thickness direction. The multiple magnetic materials 71 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 71. The multiple magnetic materials 71 have crimping portions 72 for fitting together.

[0085] As shown in Figure 24A, the crimped portion 72 has a smoothly bent, curved cross-section. Also, as shown in Figure 24B, the ends of the crimped portion 72 are cut off. The crimped portion 72 has a circular shape when viewed from the plate thickness direction. The laminate 70 is joined by the crimped portion 72. The crimped portion 72 is formed by bending. The region in which the crimped portion 72 is formed becomes the deformation region R7. In the magnetic member 7, the magnetic material 71 is heated in the heating region H7 which includes the deformation region R7.

[0086] A second modification of the magnetic material according to the fourth embodiment will be described. In the second modification of the magnetic material according to the fourth embodiment, the crimped portion is circular when viewed from the plate thickness direction. Figure 25 is a perspective view of a magnetic member 8, which is an example of a second modification of the magnetic member according to the fourth embodiment. Figure 26 is a plan view of the magnetic member 8, which is an example of a second modification of the magnetic member according to the fourth embodiment, as seen from the plate thickness direction. Figures 27A and 27B are cross-sectional views of the magnetic member 8, which is an example of a second modification of the magnetic member according to the fourth embodiment. Figure 27A is a cross-sectional view of the cross section along the line VIII-VIII in Figure 26, as seen from the plate surface direction. Figure 27B is a cross-sectional view of the cross section along the line VIIIa-VIIIa in Figure 26, as seen from the plate surface direction.

[0087] The magnetic member 8 comprises a laminate 80 in which multiple plate-shaped magnetic materials 81 are stacked in the thickness direction. The multiple magnetic materials 81 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 81. The multiple magnetic materials 81 have crimping portions 82 for fitting together. In Figures 25 and 26, the ends where the crimping portions 82 are formed are indicated by dotted lines.

[0088] As shown in Figures 27A and 27B, the crimped portion 82 has a smoothly bent, curved cross-section. The crimped portion 82 has a circular shape when viewed from the plate thickness direction. The laminate 80 is joined by the crimped portion 82. The crimped portion 82 is formed by bending. The region in which the crimped portion 82 is formed becomes the deformation region R8. In the magnetic member 8, the magnetic material 81 is heated in the heating region H8 which includes the deformation region R8.

[0089] According to the magnetic member of the fourth embodiment, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0090] <Fifth Embodiment> A magnetic material according to the fifth embodiment will now be described. The magnetic member according to the fifth embodiment is a magnetic material in which the deformation region is a region bent in the thickness direction of the magnetic material, and a plurality of magnetic materials are joined by the deformation region. In the magnetic member according to the fifth embodiment, a plurality of magnetic materials are joined by crimping. In the magnetic member according to the fifth embodiment, the crimped portion is formed by being smoothly bent.

[0091] Figure 28 is a perspective view of a magnetic member 9, which is an example of a magnetic member according to the fifth embodiment. Figure 29 is a plan view of the magnetic member 9, which is an example of a magnetic member according to the fifth embodiment, as seen from the plate thickness direction. Figure 30 is a cross-sectional view of the magnetic member 9, which is an example of a magnetic member according to the fifth embodiment. Figure 30 is a cross-sectional view of the cross section along the line IX-IX in Figure 29, as seen from the plate surface direction.

[0092] The magnetic member 9 comprises a laminate 90 in which multiple plate-shaped magnetic materials 91 are stacked in the thickness direction. The multiple magnetic materials 91 are joined together by fitting together the protrusions and recesses formed on the multiple magnetic materials 91. The multiple magnetic materials 91 have crimping portions 92 for fitting together.

[0093] As shown in Figure 30, the crimping portion 92 has a claw-like shape with one end in the plate surface direction smoothly bent in the plate thickness direction and the other end in the plate surface direction cut off. The crimping portion 92 has a rectangular shape when viewed from the plate thickness direction. The laminate 90 is joined by the crimping portion 92. The crimping portion 92 is formed by bending. The region in which the crimping portion 92 is formed becomes the deformation region R9. In the magnetic member 9, the heating region H9, which includes the deformation region R9, is heated in the magnetic material 91.

[0094] According to the magnetic member of the fifth embodiment, the processability of the bent deformation region in a laminate obtained by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0095] In the magnetic members according to each of the first to fifth embodiments, steel plates of amorphous soft magnetic material or nanocrystalline soft magnetic material may be joined together by crimping alone. Alternatively, sheets made by bonding multiple steel plates of amorphous soft magnetic material or nanocrystalline soft magnetic material with an adhesive may be joined together by crimping. Furthermore, sheets made by bonding multiple steel plates of amorphous soft magnetic material or nanocrystalline soft magnetic material with an adhesive may be bonded together with an adhesive and then joined by crimping. In addition, steel plates of amorphous soft magnetic material or nanocrystalline soft magnetic material may be joined to steel plates of other materials (such as electromagnetic steel plates) by crimping. The same applies to the magnetic members according to the following embodiments.

[0096] <Sixth Embodiment> Next, a compressor will be described as a specific example of equipment in which the magnetic member of the present disclosure is used. Figures 31 to 33 are partial cross-sectional views of a compressor 101, which is an example of a compressor in which the magnetic member of the sixth embodiment is used. Figure 31 is a cross-sectional view showing a cross section along the drive shaft 112 of the compressor 101, and Figure 32 is a cross-sectional view showing a cross section perpendicular to the drive shaft 112 of the cylinder 221 portion of the compressor 101. Figure 33 is a cross-sectional view showing a cross section perpendicular to the drive shaft 112 of the rotating electric machine 203 portion of the compressor 101.

[0097] <Compressor 101> Compressor 101 is a vertical, high-pressure, dome-type rotary compressor. Compressor 101 draws in a refrigerant, such as carbon dioxide, a fluorocarbon refrigerant, a hydrofluoroolefin refrigerant, or a hydrocarbon refrigerant. Compressor 101 then compresses the drawn-in refrigerant and discharges it.

[0098] The compressor 101 includes a sealed container 201. The compressor 101 includes a compression mechanism 202 and a rotating electric machine 203 located inside the sealed container 201. The compression mechanism 202 is driven by the rotating electric machine 203. The compressor 101 includes an accumulator 110. In the compressor 101, the refrigerant is drawn in through the accumulator 110 from the suction pipe 111. The refrigerant drawn in from the suction pipe 111 is compressed by the compression mechanism 202. The refrigerant compressed by the compression mechanism 202 is discharged from the discharge pipe 113.

[0099] [Compression mechanism 202] The compression mechanism 202 comprises a muffler 240, a bearing 250, a cylinder 221, and a bearing 260. The bearing 250, cylinder 221, and bearing 260 are arranged in order from top to bottom of the paper. The compression mechanism 202 has a cylinder chamber 222 surrounded by the bearing 250, cylinder 221, and bearing 260. The compression mechanism 202 is equipped with a roller 227 in the cylinder chamber 222.

[0100] The bearing 250 comprises a main body portion 251 and a main bearing portion 252. The main body portion 251 has a disc shape. The drive shaft 112 passes through the center of the main body portion 251. The main bearing portion 252 has a cylindrical shape. The main bearing portion 252 extends upward from the main body portion 251. The main bearing portion 252 rotatably supports the drive shaft 112. The main bearing portion 252 constitutes a radial bearing. The main body portion 251 has a discharge hole 251a that penetrates vertically and connects to the cylinder chamber 222. The bearing 250 is provided with a discharge valve 231 on the upper side of the main body portion 251 (opposite the cylinder chamber 222) that opens and closes the discharge hole 251a. The discharge valve 231 is, for example, a reed valve.

[0101] The muffler 240 is located on the side of the main body 251 of the bearing 250 opposite to the cylinder 221. The muffler 240 covers the discharge valve 231. The muffler 240 has a cup-shaped form. The muffler 240 is fixed by bolts 235. A muffler chamber 242 is formed between the main body 251 of the bearing 250 and the muffler 240. The muffler chamber 242 is connected to the cylinder chamber 222 via the discharge hole 251a. The muffler 240 has an opening 243 that leads upward from the muffler chamber 242.

[0102] The cylinder 221 has a plate-like shape. The cylinder 221 has a cylinder opening in the center. A roller 227 is arranged inside the cylinder 221 to rotate eccentrically. A blade 228 is integrally formed on the roller 227. The blade 228 divides the cylinder chamber 222 into a low-pressure chamber 222a and a high-pressure chamber 222b. The blade 228 is held in close contact by a pair of bushings 225.

[0103] Low-pressure refrigerant is supplied to the low-pressure chamber 222a from the suction pipe 111. The high-pressure refrigerant, compressed in the high-pressure chamber 222b, is discharged from the discharge port 251a.

[0104] The bearing 260 comprises a main body 261 and a sub-bearing portion 262. The main body 261 has a disc-like shape. The drive shaft 112 passes through the center of the main body 261. The sub-bearing portion 262 has a cylindrical shape. The sub-bearing portion 262 extends downward from the main body 261. The sub-bearing portion 262 rotatably supports the drive shaft 112. The sub-bearing portion 262 constitutes a radial bearing.

[0105] [Rotating Electrical Machine 203] The rotating electrical machine 203 comprises a stator 205 and a rotor 206. The rotor 206 is positioned inside the stator 205 at a distance from it. The rotating electrical machine 203 is a 6-pole, 9-slot motor. The number of poles and slots are not limited to the above example and may be selected as appropriate.

[0106] The stator 205 comprises a stator core 510, a coil 520, and an insulator 530.

[0107] The stator core 510 is composed of a laminate in which multiple plate-shaped magnetic materials 510i, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, are stacked in the thickness direction. The stator core 510 comprises an annular portion 511 and a plurality of teeth portions 512. The teeth portions 512 are provided projecting radially inward from the inner surface of the annular portion 511. The teeth portions 512 are arranged at equal intervals along the circumferential direction. The stator 205, for example, comprises nine teeth portions 512.

[0108] The stator core 510 is joined to the sealed container 201 by an interference fit. The stator 205 is fixed to the sealed container 201 by the interference fit of the stator core 510 to the sealed container 201. The interference fit may be, for example, shrink fit, cold fit or press fit.

[0109] The coil 520 is wound around each of the multiple teeth 512 in the stator core 510.

[0110] The insulator 530 is provided on the upper and lower sides of the stator core 510. The insulator 530 is provided between the stator core 510 and the coil 520. The insulator 530 insulates the stator core 510 from the coil 520. The insulator 530 is formed of, for example, resin.

[0111] The rotor 206 comprises a rotor core 610 and a plurality of magnets 620. Each of the plurality of magnets 620 is embedded in the rotor core 610. The rotor 206 comprises, for example, six magnets 620.

[0112] The rotor core 610 is composed of a laminate in which multiple plate-shaped magnetic materials 610i, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, are stacked in the thickness direction. The rotor core 610 has a cylindrical shape. A drive shaft 112 passes through the center of the rotor core 610. The drive shaft 112 is joined to the rotor core 610 by interference fit.

[0113] The magnet 620 has a flat plate shape. The magnet 620 is a permanent magnet. The magnet 620 is, for example, a rare earth magnet such as a neodymium magnet or a ferrite magnet. The magnet 620 is, for example, a bonded magnet formed by molding magnetic powder with an organic or inorganic binder.

[0114] The stator core 510 is joined to the sealed container 201 by a press-fit. Figure 34 is a diagram illustrating the heat treatment in the rotating electric machine 203 portion of a compressor 101, which is an example of a compressor using a magnetic member according to the sixth embodiment. In the stator core 510, in the region in contact with the sealed container 201, a heat treatment process is performed in region H11 of Figure 34, where the material is heated to a temperature above the crystallization temperature in order to lower the hardness of the magnetic material in the stator core 510 and increase its ductility or malleability. The stator core 510 is held by the sealed container 201 (holding member) under stress. The stator core 510 is bent by the stress in the portion in contact with the sealed container 201. Region H11 includes the portion of the stator core 510 that is in contact with the sealed container 201. Region H11 also includes the portion of the stator core 510 that receives stress from the sealed container 201.

[0115] As shown in Figures 35 to 40, the shape of the stator core in the part that contacts the sealed container 201 may be changed as appropriate.

[0116] As shown in Figure 35, in the stator core 510A, a protrusion 511a may be formed that protrudes radially outward from the annular portion 511A, and this protrusion 511a may be designated as a heating region H21A. Also, as shown in Figure 36, in the stator core 510B, a protrusion 511b with an opening that protrudes radially outward from the annular portion 511B may be formed, and this protrusion 511b may be designated as a heating region H21B. Furthermore, as shown in Figure 37, in the stator core 510C, a protrusion 511c may be formed that protrudes radially outward from the annular portion 511C and extends to both sides in the circumferential direction, and this protrusion 511c may be designated as a heating region H21C.

[0117] Furthermore, as shown in Figure 38, in the stator core 510D, a projection 511d may be formed that protrudes radially outward from the annular portion 511D and extends to one side in the circumferential direction, and this projection 511d may be designated as a heating region H21D. As shown in Figure 39, in the stator core 510E, a projection 511e may be formed that protrudes radially outward from the annular portion 511E and extends in a Y-shape, and this projection 511e may be designated as a heating region H21E. As shown in Figure 40, in the stator core 510F, an opening 511f may be provided in the portion of the annular portion 511E that contacts the sealed container 201, and the area around the opening 511f may be designated as a heating region H21F.

[0118] <Seventh Embodiment> The stator core may also be formed in sections. As shown in Figure 41, the stator core 710 may be formed from a plurality of sectioned cores 710u. The plurality of sectioned cores 710u are joined together by crimping, so-called dowel crimping. Figure 42 shows a cross-section of the sectioned cores 710u joined by the crimped section 716. The sectioned cores 710u are made up of alternating layers of magnetic material 713i and magnetic material 714i. Each of the magnetic material 713i and magnetic material 714i is an amorphous soft magnetic material or a nanocrystalline soft magnetic material.

[0119] The divided cores 710u are joined together by joining the magnetic material 713i and the magnetic material 714i with the crimping portion 716. The region H31 around the crimping portion 716 of each of the magnetic material 713i and the magnetic material 714i is heat-treated to a temperature above the crystallization temperature.

[0120] <Eighth Embodiment> The stator may also be formed by bending the annular portion. Figure 43 shows the stator 810 before bending. By heat-treating the portion to be bent in a region H41 as shown in Figure 43, damage during bending can be prevented. Region H41 is bent in the direction of the plate surface.

[0121] <Ninth Embodiment> Furthermore, as shown in Figure 44, when forming a T-shaped member by bending, the portion to be bent may be heat-treated as region H51. Heat treatment can prevent damage when bending.

[0122] <Tenth Embodiment> As shown in Figure 45, when bending the outermost magnetic material in the divided core 950u to fit into the groove, the bending region H61 may be heat-treated. Heat treatment can prevent damage when bending.

[0123] <Eleventh Embodiment> The magnetic member of this disclosure is used, for example, in the stator core or rotor core of a rotating electric machine such as a motor or a generator. The rotating electric machine using the magnetic member of this disclosure can also be used, for example, as a compressor in combination with a compression mechanism driven by the rotating electric machine. An example of the use of a rotating electric machine using the magnetic member of this disclosure is shown.

[0124] This document describes a refrigeration system that uses a rotating electric machine employing the magnetic member of the present disclosure. Figure 46 illustrates an example of the use of a rotating electric machine employing the magnetic member according to the 11th embodiment.

[0125] The refrigeration system 100 includes a compressor 101, a four-way valve 102, a heat exchanger 103, an expansion valve 104, and a heat exchanger 105. The refrigeration system 100 is, for example, an air conditioner (a cooling-only unit, a heating-only unit, or a cooling and heating unit that switches between cooling and heating), a water heater, a chiller unit, or a cooling device for cooling the air inside a storage area (cooling the air inside a refrigerator, freezer, display case, container, etc.).

[0126] First, we will explain the case where the refrigeration system 100 is cooled by the heat exchanger 105. Figure 46 shows the connections when the refrigeration system 100 is cooled by the heat exchanger 105.

[0127] The refrigerant compressed by the compressor 101 is supplied to the heat exchanger 103 through the four-way valve 102. In the heat exchanger 103, the refrigerant supplied to the heat exchanger 103 is cooled by heat exchange with air or the like. A blower 103b, consisting of a motor 103m to which a fan 103f is attached, blows air to the heat exchanger 103. The fan 103f is, for example, a propeller fan, turbo fan, sirocco fan, or cross-flow fan. The motor 103m may have the same configuration as the rotating electric machine 203. The refrigerant cooled by the heat exchanger 103 condenses and liquefies, and is supplied to the expansion valve 104. The refrigerant is depressurized by the expansion valve 104. The depressurized refrigerant is supplied to the heat exchanger 105. In the heat exchanger 105, the refrigerant evaporates and vaporizes. The blower 105b, which consists of a motor 105m to which a fan 105f is attached, blows air to the heat exchanger 105. The motor 105m may have the same configuration as the rotating electric machine 203. The refrigerant discharged from the heat exchanger 105 is then returned to the compressor 101 and compressed again. In the heat exchanger 105, the refrigeration system 100 cools the object by the heat of vaporization caused by the evaporation of the refrigerant.

[0128] Next, we will explain the case where the refrigeration system 100 is heated by the heat exchanger 105. The refrigerant compressed by the compressor 101 is supplied to the heat exchanger 105 through the four-way valve 102. In the heat exchanger 105, the refrigeration system 100 heats the object by supplying the compressed, high-temperature refrigerant. The refrigerant that has undergone heat exchange in the heat exchanger 105 condenses and liquefies, and is supplied to the expansion valve 104. The refrigerant is depressurized by the expansion valve 104. The depressurized refrigerant is supplied to the heat exchanger 103. In the heat exchanger 103, the refrigerant evaporates and vaporizes by exchanging heat with air or the like. The refrigerant discharged from the heat exchanger 103 then passes through the four-way valve 102 and returns to the compressor 101 to be compressed again.

[0129] While embodiments have been described above, it will be understood that various modifications to the form and details are possible without departing from the spirit and scope of the claims. Various modifications and improvements are possible, such as combinations or substitutions with some or all of other embodiments.

[0130] This application claims priority to Basic Patent Application No. 2024-168408, filed with the Japan Patent Office on September 27, 2024, the entire contents of which are incorporated herein by reference.

[0131] 1, 2, 3, 4, 5, 6, 7, 8, 9 Magnetic member 10, 20, 30, 40, 50, 60, 70, 80, 90 Laminated body 11, 11i, 21, 31, 41, 51, 61, 71, 81, 91 Magnetic material 12, 22, 32, 42, 52, 62, 72, 82, 92 Caulking part H1, H2, H3, H4, H5, H6, H7, H8, H9 Heating area R1, R2, R3, R4, R5, R6, R7, R8, R9 Deformation area

Claims

1. A magnetic member (1, 6) comprising a laminate (10, 60) formed by stacking multiple plate-shaped magnetic materials (11, 61) which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, wherein the magnetic materials (11, 61) have bent deformation regions (R1, R6), and the ratio of crystals per unit volume in the deformation regions (R1, R6) of the magnetic materials (11, 61) is greater than the ratio of crystals per unit volume of the magnetic materials (11, 61).

2. The magnetic member (1, 6) according to claim 1, wherein the deformation regions (R1, R6) are regions of the magnetic material (11, 61) that are bent in the thickness direction, and a plurality of the magnetic materials (11, 61) are joined together by the deformation regions (R1, R6).

3. The magnetic member (6) according to claim 1 or claim 2, wherein the deformation region (R6) is smoothly bent.

4. The magnetic member (6) according to claim 1 or claim 2, wherein the deformation region (R6) is a region that is bent so that the surface is smoothly concave.

5. The magnetic member (1, 6) according to any one of claims 1 to 4, wherein the deformation region (R1, R6) is a region of the magnetic material (11, 61) that is bent in the thickness direction or the surface direction.

6. The magnetic material (510i) is held by a holding member (201) under stress, and the deformed region is a region bent by the stress from the holding member (201), as described in claim 1.

7. A rotating electric machine (103m, 105m, 203) comprising a magnetic member according to any one of claims 1 to 6, wherein the magnetic member is a stator core or a rotor core.

8. A compressor (101) comprising: a rotating electric machine (203) as described in claim 7; and a compression mechanism (202) driven by the rotating electric machine.

9. A blower (103b, 105b) comprising: a rotating electric machine (103m, 105m) as described in claim 7; and fans (103f, 105f) driven by the rotating electric machine.

10. A refrigeration apparatus (100) comprising the rotating electric machine (203) described in claim 7.

11. A method for manufacturing a magnetic member, comprising a laminate (10, 60) in which a plurality of plate-shaped magnetic materials (11, 61) which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials are stacked, the method comprising: a first step of heating a portion of the magnetic material (11, 61) to a temperature above the crystallization temperature of the magnetic material (11, 61); and a second step of bending the magnetic material (11, 61) within the portion of the magnetic material (11, 61) after the first step, the method for manufacturing a magnetic member (1, 6).

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