Magnetic components, rotating electrical machinery, compressors, blowers, refrigeration equipment, and methods for manufacturing magnetic materials

Abstract

This disclosure provides a technology for improving the processability of magnetic components composed of amorphous soft magnetic materials and nanocrystalline soft magnetic materials. [Solution] A magnetic member comprising a laminate formed by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, wherein the magnetic materials have a bent deformation region, and the ratio of crystals per unit volume of the deformation region of the magnetic material is greater than the ratio of crystals per unit volume of the magnetic material.

Description

Technical Field

[0007]

[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.

Background Art

[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.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[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 using amorphous soft magnetic materials and nanocrystalline soft magnetic materials 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 magnetic members composed of amorphous soft magnetic materials and nanocrystalline soft magnetic materials.

Means for Solving the Problems

[0007] The magnetic member in the first perspective is, It includes a laminate formed by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials. The magnetic material has a bent deformation region, The ratio of crystals per unit volume in the deformation region of the magnetic material is greater than the ratio of crystals per unit volume of the magnetic material. It is a magnetic component.

[0008] According to the magnetic member of the first perspective, the processability of the bent deformation region in a laminate formed by stacking multiple plate-shaped magnetic materials, which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, can be improved.

[0009] The magnetic member from the second perspective is, The deformation region is a region of the magnetic material that is bent in the thickness direction of the plate. Multiple of the magnetic materials are joined together by the deformation region. This is a magnetic component from the first perspective.

[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 from the third perspective is, The aforementioned deformation region is smoothly bent. It is a magnetic member from the first or second viewpoint.

[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 in the fourth perspective is, The aforementioned deformed region is a region where the surface is bent so that it becomes smoothly concave. It is a magnetic member from the first or second viewpoint.

[0014] According to the magnetic member of the fourth aspect, in a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of bending processing for bending the surface smoothly can be improved.

[0015] The magnetic member of the fifth aspect is The deformation region is a region bent in the thickness direction or the plane direction of the magnetic material. The magnetic member according to any one of the first to fourth aspects.

[0016] According to the magnetic member of the fifth aspect, in a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of bending processing in the thickness direction or the plane direction can be improved.

[0017] The magnetic member of the sixth aspect is The magnetic material is held while receiving stress from the holding member. The deformation region is a region bent by the stress from the holding member. The magnetic member according to the first aspect.

[0018] According to the magnetic member of the sixth aspect, in a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, cracking or the like of the laminate in a portion held by the holding member can be prevented.

[0019] The rotating electrical machine according to the first aspect is Equipped with the magnetic member according to any one of the first to sixth aspects. The magnetic member is a stator core or a rotor core. A rotating electrical machine.

[0020] According to the rotating electrical machine of the first aspect, in a rotating electrical machine including a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of the plate-shaped magnetic material made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material can be improved.

[0021] The compressor of the first aspect is a rotating electrical machine of the first aspect, and a compression mechanism driven by the rotating electrical machine, and includes a compressor.

[0022] According to the compressor of the first aspect, in a compressor including a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of the plate-shaped magnetic material made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material can be improved.

[0023] The blower of the first aspect is a rotating electrical machine of the first aspect, and a fan driven by the rotating electrical machine, and includes a blower.

[0024] According to the blower of the first aspect, in a blower including a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of the plate-shaped magnetic material made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material can be improved.

[0025] The refrigeration device of the first aspect is a refrigeration device including a rotating electrical machine of the first aspect, and is a refrigeration device.

[0026] According to the refrigeration device of the first aspect, in a refrigeration device including a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, the workability of the plate-shaped magnetic material made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material can be improved.

[0027] The method for manufacturing a magnetic member of the first aspect is a method for manufacturing a magnetic member including a laminate in which a plurality of plate-shaped magnetic materials made of an amorphous soft magnetic material or a nanocrystalline soft magnetic material are laminated, and A first step involves heating a portion of the magnetic material to a temperature above the crystallization temperature of the magnetic material, Following the first step, a second step is performed in which the magnetic material is bent within the aforementioned partial region, including, This is a method for manufacturing magnetic materials.

[0028] According to the manufacturing method of the magnetic member described in 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. [Brief explanation of the drawing]

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

[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 now 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 multiple magnetic materials are joined by the deformation region. In the magnetic member according to the first embodiment, multiple 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 line II in Figure 2, as seen from the plate surface direction.

[0035] For ease of explanation, drawings may 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 shown 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 amorphous soft magnetic materials or nanocrystalline soft magnetic materials used in magnetic material 11 include, for example, iron-cobalt alloys, iron-nickel alloys, iron-aluminum alloys, iron-silicon alloys, iron-tantalum alloys, or iron-zirconium alloys. Examples of iron-cobalt alloys include Fe·Co alloys and Fe·Co·V alloys. Examples of iron-nickel alloys include Fe·Ni alloys, Fe·Ni·Mo alloys, Fe·Ni·Cr alloys, and Fe·Ni·Si alloys. Examples of iron-aluminum alloys or iron-silicon alloys include Fe·Al alloys, Fe·Al·Si alloys, Fe·Al·Si·Cr alloys, Fe·Al·Si·Ti·Ru alloys, and Fe·Al·O alloys. Examples of iron-tantalum alloys include Fe·Ta alloys, Fe·Ta·C alloys, and Fe·Ta·N alloys. An example of an iron-zirconium alloy is Fe·Zr·N alloy.

[0043] Furthermore, typical amorphous soft magnetic materials or nanocrystalline soft magnetic materials used in magnetic material 11 may include, for example, cobalt alloys containing at least one element from the group consisting of cobalt, zirconium, hafnium, niobium, tantalum, titanium, and yttrium. The cobalt alloy preferably contains 80 at% or more cobalt. Cobalt alloys containing 80 at% or more cobalt tend to become amorphous when formed into a film. In addition, cobalt alloys containing 80 at% or more cobalt have excellent magnetic properties because they have low crystalline magnetic anisotropy, fewer crystalline defects, and fewer grain boundaries. Suitable amorphous soft magnetic materials include, for example, Co·Zr alloys, Co·Zr·Nb alloys, and Co·Zr·Ta alloys.

[0044] Amorphous soft magnetic materials have an amorphous structure as their main structure. When observing the X-ray diffraction pattern of amorphous soft magnetic materials, they do not have clear peaks in the X-ray diffraction pattern. When observing the X-ray diffraction pattern of amorphous soft magnetic materials, they have a broad halo pattern.

[0045] Nanocrystalline soft magnetic materials are formed by applying heat treatment to amorphous soft magnetic materials that have an amorphous structure. Nanocrystalline soft magnetic materials are soft magnetic materials in which nanocrystals are deposited by heat treatment of amorphous soft magnetic materials. Nanocrystalline soft magnetic materials have a nanocrystalline structure. Nanocrystals are polycrystalline materials with particle sizes ranging from several nanometers to tens of nanometers.

[0046] When observing the X-ray diffraction pattern of nanocrystalline soft magnetic materials, X-ray diffraction peaks are observed at positions corresponding to the lattice spacing of the crystal planes. The crystallite size can be calculated from the width of the X-ray diffraction peaks using Scherrer's formula. A nanocrystal is defined as a material whose crystallite size, calculated from the full width at half maximum (FWHM) of the X-ray diffraction peaks using Scherrer's formula, is less than 1 micrometer. In this disclosure, the crystallite size of the nanocrystal (the crystallite size calculated from the FWHM of the X-ray diffraction peaks using Scherrer's formula) is preferably 100 nanometers or less, and more preferably 50 nanometers or less. Furthermore, the crystallite size of the nanocrystal is preferably 5 nanometers or more.

[0047] Nanocrystalline soft magnetic materials can improve magnetic properties because the crystallite size of the nanocrystals is 100 nanometers or less, as described above. In contrast, the crystallite size of conventional electrical steel sheets is on the order of micrometers, and is generally 50 micrometers or larger.

[0048] It is known that both amorphous soft magnetic materials and nanocrystalline soft magnetic materials undergo crystallization when heated to temperatures above their crystallization temperature, through the formation of crystal nuclei and the growth of crystal grains (coarsening of grain size).

[0049] In both amorphous and nanocrystalline soft magnetic materials, as crystallization progresses, changes in mechanical properties occur in the crystallized regions, such as a decrease in Vickers hardness and an increase in ductility or malleability.

[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 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 either 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 that will be processed. The region of the magnetic material that will be processed is the region that will be bent. The region of the magnetic material that will be processed is the region that includes the deformation region R1. The portion of the magnetic material that will 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 the region where the magnetic material 11i is heated. The heating region H1, which includes the deformation region R1 where the crimped portion 12 is formed, is heated in the magnetic material 11i. 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 crystal volumes in the given region) ÷ (volume of the given region). The ratio of crystals per unit volume in the heated 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 a 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 a 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] [Differentiation] Modified examples of the magnetic material according to the first embodiment will now be described. In the modified example 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 magnetic member 2, which is an example of a modified example of the magnetic member according to the first embodiment. Figure 8 is a plan view of magnetic member 2, which is an example of a modified example of the magnetic member according to the first embodiment, as seen from the plate thickness direction. Figure 9 is a cross-sectional view of magnetic member 2, which is an example of a modified example 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 interlocking the protrusions and indentations formed on the multiple magnetic materials 21. The multiple magnetic materials 21 have crimping portions 22 for interlocking.

[0064] As shown in Figure 9, the crimped portion 22 has a V-shaped cross-section. The crimped portion 22 has a circular shape when viewed from the plate thickness direction. Multiple magnetic materials 21 are joined by the crimped portion 22 using a so-called V-crimping method. The crimped portion 22 is formed by bending. The region in which the crimped 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 now be described. In the magnetic member according to the second embodiment, 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 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 indentations 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] [Differentiation] A modified example 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 indentations 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 now 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 multiple magnetic materials are joined together by the deformation region. In the magnetic member according to the third embodiment, multiple magnetic materials are joined together 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 VV line 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 the 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> A 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 a 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 smoothly bending. Smooth bending means, for example, that the curvature of the bent portion is less than or equal to a predetermined value. Smooth bending means, for example, that the cross-section of the bent portion is free of 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 magnetic material 61 is heated in the heating region H6 which includes the deformation region R6.

[0083] [Differentiation] A first modified example of the magnetic material according to the fourth embodiment will be described. In the first modified example 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 modified example 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 modified example of the magnetic member according to the fourth embodiment, as viewed 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 modified example 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 viewed 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 viewed 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 where 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 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 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 by 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 multiple magnetic materials are joined by the deformation region. Multiple magnetic materials are joined by crimping in the magnetic member according to the fifth embodiment. The crimped portion of the magnetic member according to the fifth embodiment 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 of multiple amorphous soft magnetic material or nanocrystalline soft magnetic material steel plates bonded together with adhesive may be joined together by crimping. Furthermore, sheets of multiple amorphous soft magnetic material or nanocrystalline soft magnetic material steel plates bonded together with adhesive may be bonded together with adhesive and then joined together by crimping. In addition, a steel plate of amorphous soft magnetic material or nanocrystalline soft magnetic material may be joined to a steel plate of another material (such as an electromagnetic steel plate) 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 this 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 according to 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> The compressor 101 is a vertical, high-pressure, dome-type rotary compressor. The compressor 101 draws in a refrigerant, such as carbon dioxide, a fluorocarbon refrigerant, a hydrofluoroolefin refrigerant, or a hydrocarbon refrigerant. The compressor 101 then compresses the drawn-in refrigerant and discharges it.

[0098] The compressor 101 comprises a sealed container 201. The compressor 101 comprises 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 comprises an accumulator 110. In the compressor 101, the refrigerant is drawn in from the suction pipe 111 via the accumulator 110. 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 includes a roller 227 in the cylinder chamber 222.

[0100] The bearing 250 comprises a body portion 251 and a main bearing portion 252. The body portion 251 has a disc shape. The drive shaft 112 passes through the center of the body portion 251. The main bearing portion 252 has a cylindrical shape. The main bearing portion 252 extends upward from the body portion 251. The main bearing portion 252 rotatably supports the drive shaft 112. The main bearing portion 252 constitutes a radial bearing. The 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 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 bearing 250 on the side of the main body 251 opposite the cylinder 221. The muffler 240 covers the discharge valve 231. The muffler 240 has a cup-shaped form. The muffler 240 is secured 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 communicates with the cylinder chamber 222 through 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 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 Electric Machinery 203] The rotating electric 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 electric 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 interference fit of the stator core 510 to the sealed container 201 secures the stator 205 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 stress from the sealed container 201 (holding member). The stator core 510 is bent by 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> Furthermore, the stator core may 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 by crimping, also known as 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 either 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 magnetic material 714i with the crimping portion 716. The region H31 around the crimping portion 716 in each of the magnetic material 713i and magnetic material 714i is heat-treated to a temperature above the crystallization temperature.

[0120] <Eighth Embodiment> Alternatively, the stator may be formed by bending the annular portion. Figure 43 shows the stator 810 before bending. By heat-treating the bending portion in 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, the portion of the T-shaped member that is bent during formation may be heat-treated as shown in region H51. Heat treatment can prevent breakage 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 H71 may be heat-treated. Heat treatment can prevent damage when bending.

[0123] <Embodiment 11> The magnetic members of this disclosure are used, for example, in the stator core or rotor core of a rotating electric machine such as a motor or generator. A rotating electric machine using the magnetic members of this disclosure can also be used as a compressor in combination with a compression mechanism driven by the rotating electric machine, for example. An example of the use of a rotating electric machine using the magnetic members of this disclosure is shown.

[0124] This section 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 unit for cooling only, a unit for heating only, or a 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. A blower 105b, consisting of a motor 105m to which a fan 105f is attached, blows air into 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] Although 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 parts or all of other embodiments. [Explanation of Symbols]

[0130] 1, 2, 3, 4, 5, 6, 7, 8, 9 Magnetic material 10, 20, 30, 40, 50, 60, 70, 80, 90 laminated 11, 11i, 21, 31, 41, 51, 61, 71, 81, 91 Magnetic materials 12, 22, 32, 42, 52, 62, 72, 82, 92 Crimping section H1, H2, H3, H4, H5, H6, H7, H8, H9 heating area R1, R2, R3, R4, R5, R6, R7, R8, R9 deformation area

Claims

1. The laminate (10, 60) comprises multiple plate-shaped magnetic materials (11, 61) which are amorphous soft magnetic materials or nanocrystalline soft magnetic materials, The magnetic material (11, 61) has a bent deformation region (R1, R6), The ratio of crystals per unit volume in the deformation region (R1, R6) of the magnetic material (11, 61) is greater than the ratio of crystals per unit volume of the magnetic material (11, 61). Magnetic members (1, 6).

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

3. The deformation region (R6) is smoothly bent. The magnetic member (6) according to claim 2.

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

5. The deformation regions (R1, R6) are regions of the magnetic material (11, 61) that are bent in the thickness direction or the surface direction. The magnetic members (1, 6) according to claim 1.

6. The magnetic material (501i) is held by the holding member (201) under stress, The deformed region is the region bent by the stress from the holding member (201). The magnetic member (501) according to claim 1.

7. A magnetic member according to any one of claims 1 to 6, The magnetic member is a stator core or a rotor core. Rotating electrical machinery (103m, 105m, 203).

8. The rotating electric machine (203) according to claim 7, A compression mechanism (202) driven by the aforementioned rotating electric machine, Equipped with, Compressor (101).

9. The rotating electric machine (103m, 105m) according to claim 7, Fans (103f, 105f) driven by the aforementioned rotating electric machine, Equipped with, Blower (103b, 105b).

10. The rotating electric machine (203) according to claim 7, Refrigeration device (100).

11. A method for manufacturing a magnetic member, 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, A first step involves heating a portion of the magnetic material (11, 61) to a temperature above the crystallization temperature of the magnetic material (11, 61), Following the first step, a second step is performed in which the magnetic material (11, 61) is bent within the aforementioned partial region, including, A method for manufacturing magnetic members (1, 6).

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