Static induction circuit

Abstract

To provide a static induction electric device that can regulate the horizontal position of the iron core and suppress the impact on cooling performance in the process. [Solution] A static induction electric device having windings and an iron core, wherein the device has an iron core holding means that supports the iron core at a position above the windings, the iron core holding means having an upper support member, an upper support plate, and upper and lower support members, and a buffer member having upper and lower through-flow channels between the upper support member and the iron core.

Description

Technical Field

[0001] The present invention relates to a static induction electrical apparatus.

Background Art

[0002] Static induction electrical apparatuses are widely used as voltage conversion means. One form thereof is a so-called transformer. An example thereof is disclosed in Patent Document 1. It is a transformer having windings and a core.

[0003] Since both the core and the windings used in static induction electrical apparatuses or transformers are made of metallic materials, they are large in size and heavy in weight.

[0004] Patent Document 1 discloses a method of avoiding the self-weight of the windings and the self-weight of the core from being applied to the exterior portion of the windings.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Patent Document 1 discloses a technical idea of avoiding the self-weight of the core from being applied to the exterior portion of the windings by receiving the weight of the core 32 with the insulating members 28 to 31 and then receiving it with the upper core occupying metal fittings 16 and 18.

[0007] However, a method of avoiding the occurrence of horizontal displacement or inclination of the core due to swaying or vibration during the movement of the static induction electrical apparatus or vibration such as an earthquake after installation, which affects the weight balance of the static induction electrical apparatus, is not disclosed.

[0008] Furthermore, means for suppressing the influence on the cooling performance has not been considered in its realization.

[0009] Therefore, one objective of the present invention is to provide a static induction electrometer that can regulate the horizontal position of the iron core and suppress the impact on cooling performance in the process. [Means for solving the problem]

[0010] A static induction electric device having windings and an iron core, wherein the device has an iron core holding means that supports the iron core at a position above the windings, the iron core holding means having an upper support member, an upper support plate, and upper and lower support members, and a buffer member having upper and lower through-flow channels between the upper support member and the iron core. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a static induction electric device that can regulate the horizontal position of the iron core while suppressing the impact on cooling performance.

[0012] Further means and effects of the present invention will become apparent throughout the entire specification below. [Brief explanation of the drawing]

[0013] [Figure 1A] This is a top view of an example of a winding. [Figure 1B] This is a top view of an example of a winding. [Figure 1C] This is a top view showing the relationship between the windings and the iron core. [Figure 1D] This is a top perspective view showing the winding, upper support member, and upper support plate. [Figure 1E] This is a top view of a multiphase static induction electric generator, corresponding to Figure 1B. [Figure 1F] This is a top view illustrating the cushioning member, related to Figure 1D. [Figure 2A] This is a schematic cross-sectional view along line AA in Figure 1F. [Figure 2B] Figure 1F is a schematic cross-sectional view along line BB. [Figure 3A] This is a side view of the cushioning member. [Figure 3B]It is a side view of the buffer member. [Figure 3C] It is a side view of the first region of the buffer member. [Figure 3D] It is a side view of the second region of the buffer member. [Figure 3E] It is a front view of the buffer member. [Figure 3F] It is an example of a cross-sectional view taken along the C-C line of FIG. 3E. [Figure 3G] It is an example of a cross-sectional view taken along the C-C line of FIG. 3E. [Figure 3H] It is an example of a cross-sectional view taken along the C-C line of FIG. 3E. [Figure 3I] It is an example of a cross-sectional view taken along the C-C line of FIG. 3E. [Figure 3J] It is a schematic explanatory diagram for explaining the structure of FIG. 3I. [Figure 3K] It is another example of the buffer member corresponding to FIG. 3F. [Figure 4A] It is an example of a cross-sectional view when a side support member is provided. [Figure 4B] It is an example of a cross-sectional view when a side support member is provided. [Figure 5] It corresponds to FIG. 4 and is an example of a cross-sectional view when there are a plurality of cores.

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment

[0015] For the understanding of the structure, it will be described in the form of sequentially adding explanations of the members.

[0016] As an example of the static induction electric device, an example of a transformer will be described.

[0017] FIG. 1A is a top view of the winding of the transformer. 1 is the winding. The winding 1 has, as an example, an inner winding 1A and an outer winding 1B as shown in FIG. 1B. Although it is common to set the outer winding 1B as the high-voltage side, it is not limited.

[0018] Figure 1C is a top view showing the relationship between the winding and the core. The core 2 is inserted into the winding 1.

[0019] Figure 1D is a top perspective view showing the winding, upper support member, and upper support plate. The upper support plate 11 is provided above the winding 1 and serves to support the weight of the iron core 2. The upper support plate 11 is fixed to the upper support member 3, and the weight of the iron core 2 is borne by the upper support member 3. The upper support members 3 are positioned on both the left and right sides of the iron core 2, and both sides share the burden of supporting the weight of the iron core 2.

[0020] The left and right upper support members 3 are positioned horizontally by fastening means 4.

[0021] Note that the arrangement of winding 1 and core 2 can take various forms depending on the type of transformer. Another example corresponding to Figure 1C is shown in Figure 1E. As shown in Figure 1E, in a multiphase transformer, multiple windings and cores can be configured in sequence.

[0022] Next, I will explain one of the major features of the structure of this invention.

[0023] Figure 1F, relating to Figure 1D, shows a buffer member 5 positioned between the iron core 2 and the upper support member 3. The presence of this buffer member 5 is one of the major features of this invention.

[0024] Figure 2A shows a cross-sectional view of line AA in Figure 1F, and Figure 2B shows a cross-sectional view of line BB.

[0025] Figure 2A shows that a buffer member 5 is provided between the iron core 2 and the upper support member 3. An upper support plate 11 is positioned below the buffer member 5, defining the height position of the buffer member 5.

[0026] The presence of the buffer member 5 restricts the lateral or horizontal movement of the iron core 2, preventing horizontal displacement or tilting of the iron core and thus avoiding an impact on the weight balance of the static induction electrical device.

[0027] Figure 2B is a cross-sectional view along line BB in Figure 1F. Therefore, the upper support plate 11 is not positioned below the iron core 2. In such areas, the buffer member 5 may be extended further downwards.

[0028] Furthermore, in this invention, the buffer member 5 is further structurally modified to suppress heat dissipation from the winding 1.

[0029] Figure 3A is an example of a side view of the cushioning member 5. Figure 3A shows an example of the cushioning member 5 where multiple cushioning members 5A are stacked on top of each other. This facilitates adjustment of the thickness of the cushioning member 5. However, it is not limited to stacking multiple members.

[0030] Figure 3B shows that a single cushioning member 5 has a recess 5B and a solid portion 5C. Figure 3C is a diagram showing the portion of the solid portion 5C, which is the first region in Figure 3B. Figure 3D is a diagram showing the portion where the recess 5B exists, which is the second region in Figure 3B.

[0031] Figure 3E is a front view of Figure 3B. It shows an example where the solid portion 5C and the recessed portion 5B are arranged alternately.

[0032] Figure 3F is a cross-sectional view along line CC in Figure 3E. It is shown that the solid portion 5C has irregularities, thereby forming a recess 5B. The recess 5B may also be referred to as a groove.

[0033] This recess or groove extends through the top and bottom of the buffer member 5. As a result, when the buffer member 5 is configured as a transformer, it has a structure that has vertical through-flow channels.

[0034] The presence of this vertical through-flow channel allows heat generated in the lower winding 1 of the buffer member 5 to be released to the upper side.

[0035] In air-cooled or gas-cooled transformers, the through-flow channels function as gas passages. In oil-filled transformers, they function as oil circulation passages. In either case, the through-flow channels contribute to cooling.

[0036] Furthermore, having this vertical through-flow channel simultaneously means that the buffer member 5 itself, or the constituent members of the buffer member 5, have an uneven structure or a structure with varying thickness.

[0037] The cushioning member 5, by its very existence, can suppress the lateral spread of sound generated from the iron core 2. Furthermore, by providing the constituent members of the cushioning member 5 with an uneven structure or a structure with varying thickness, further noise reduction is possible by utilizing Hertz's law.

[0038] Noise generated from transformers typically has peak components at specific frequencies. Therefore, a structure with uneven surfaces or varying thickness is used to induce resonance and reduce harmonics. By designing the uneven surface or structure with varying thickness to match the frequency or harmonic components of the noise generated from the transformer, the noise reduction effect on the generated frequency can be expanded more selectively, thereby strengthening the noise reduction effect.

[0039] Furthermore, by making the cushioning member 5 have an uneven structure or a structure with varying thickness, it is possible to suppress the propagation of vibrations from the iron core 2. This is because it improves the vibration absorption performance.

[0040] Furthermore, as shown in Figure 1F, the cushioning member 5 is positioned to be elongated in the vertical direction in the figure. The left and right upper support members 3 apply pressure to the iron core 2 from the left and right sides by fastening means 4. In this case, the presence of the cushioning member 5 helps to suppress localized variations in pressure. This effect can be further improved by making the cushioning member 5 have an uneven structure or a structure with varying thickness.

[0041] It is desirable that the cushioning member 5 be made of a material with lower hardness than the upper support member 3. This is to improve the vibration suppression effect and noise suppression effect. In addition, the lower hardness allows for elastic positional control.

[0042] Furthermore, it is desirable that the buffer member 5 be made of a non-magnetic material. This is to avoid the formation of unexpected magnetic circuits and the resulting increase in parasitic capacitance.

[0043] Furthermore, it is desirable that the buffer member 5 be an insulator. This is to avoid electrical conductivity between the iron core 2 and the upper support member 3.

[0044] One example of a desirable material is pressboard. This is made by press-molding paper or wood-based materials to create a structure with bumps and curvature. It is easy to manufacture, easy to recycle, and has a low environmental impact. Furthermore, it has sufficient hardness, making it possible to achieve both positional control of the iron core 2, vibration suppression, and noise reduction. [Examples]

[0045] In this embodiment, various examples of overlapping configurations of multiple cushioning members 5A will be described using the cushioning member 5 of Example 1.

[0046] Figures 3G to 3I correspond to Figure 3F.

[0047] Figure 3G shows a configuration in which multiple cushioning members 5A are arranged so that the recesses 5B overlap. Since the ends can be aligned, this configuration has the advantage of making it easy to position multiple cushioning members 5A.

[0048] Figure 3H shows a configuration in which multiple cushioning members 5A are arranged so that the recesses 5B are offset. The advantage of offsetting the recesses 5B is that the sound insulation and vibration damping effects can be made uniform.

[0049] Figure 3I shows the case where the extension direction of the recess 5B is changed by using multiple cushioning members 5A. Figure 3J is a schematic diagram that more clearly explains the positional relationship of the recess 5B in Figure 3I. It can be seen that there are multiple extension directions for the recess 5B. In this case as well, there is the advantage that the sound insulation effect and vibration damping effect can be made uniform, similar to Figure 3H. [Examples]

[0050] In this embodiment, another example of the cushioning member 5 will be described.

[0051] Figure 3K is a diagram illustrating the buffer member 5 in this embodiment, and corresponds to Figure 3F. By being constructed of a corrugated plate, it forms an upper and lower through-flow channel.

[0052] Furthermore, multiple sheets may be provided in combination with Example 1 or Example 2.

[0053] Furthermore, this example demonstrates that various structures other than corrugated or uneven surfaces also fall within the same range. [Examples]

[0054] This embodiment is an example that can be applied in combination with any of Examples 1 to 3.

[0055] Figure 4A shows a diagram corresponding to Figure 2A. The difference from Figure 2A is the presence of side support members 10. The side support members 10 are positioned on the left, right, and bottom sides of the core 2 and serve to maintain the shape of the core 2. Figure 4B is a diagram corresponding to Figure 2B in this embodiment.

[0056] By providing the side support members 10, the shape of the iron core 2, which has a multilayer structure formed by stacking numerous thin films, can be reliably maintained. This is particularly suitable for maintaining the shape of an amorphous iron core, which is constructed by stacking numerous amorphous thin films, because amorphous thin films are soft and easily deformable.

[0057] Figure 4A discloses the fastening member 12. This is a member that fastens the upper support member 3 and the upper support plate 11. In the case of Figure 2A, there is also a fastening member 12 in a similar position, albeit at a different location. As a result, as long as the upper support member 3 and the upper support plate 11 are fastened together, various shapes and configurations of the fastening member 12 can be applied.

[0058] Furthermore, Figure 4B discloses the upper and lower support members 15. These members determine the height position of the upper support member 3. They prevent the upper support plate 11 and the winding 1 from coming into direct contact. In the case of Figure 2B, the upper and lower support members 15 are similarly located at offset positions. Consequently, as long as the height position of the upper support member 3 can be determined, various shapes and configurations of the upper and lower support members 15 are applicable. [Examples]

[0059] This embodiment is a modification of Embodiment 4.

[0060] Figure 5 is a diagram corresponding to Figure 4A. The difference from Figure 4A is that the iron cores 2 are arranged in parallel, and a side support member 10 is placed for each iron core.

[0061] This ensures that the shape of the core is maintained even in a structure where the iron cores 2 are arranged in parallel.

[0062] Each of the above embodiments can be used individually or in combination.

[0063] Furthermore, the invention is not limited to the embodiments described above, and modifications and applications are also equivalent to the disclosures in this application, as long as the technical concept is applied.

[0064] Furthermore, an example of the present invention described using the above embodiments can also be expressed as follows.

[0065] <Part 1> A static induction electric device having windings and an iron core, wherein the iron core holding means supports the iron core at a position above the windings, The aforementioned core holding means includes an upper support member, an upper support plate, and upper and lower support members. A static induction electric device having a buffer member with an upper and lower through-flow channel between the upper support member and the iron core. <Part 2> The static induction electric device according to <Part 1>, wherein the buffer member is composed of multiple layers and has grooves that constitute the upper and lower through-flow channels. <Part 3> The buffer member, one of which has a plurality of recesses forming the groove, is a static induction electric device as described in <Part 2>. <Part 4> The static induction electric device described in <Part 3>, wherein multiple of the cushioning members have multiple recesses that constitute the groove, and are arranged between adjacent cushioning members at a position where the multiple recesses overlap. <Part 5> The static induction electric device described in <Part 3>, wherein several of the cushioning members have a plurality of recesses that constitute the groove, and the plurality of recesses are arranged to be offset between adjacent cushioning members. <Part 6> The static induction electric device described in <Part 3>, wherein several of the cushioning members have a plurality of recesses that constitute the groove, and the cushioning members are arranged such that the direction of extension of the plurality of recesses differs between adjacent cushioning members. <Part 7> The aforementioned buffer member is a corrugated plate, as described in <Part 1>, for the static induction electric device. <Part 8> A static induction electric device as described in <Part 1>, wherein a side support member is sandwiched between the buffer member and the upper support member. <Part 9> The static induction electric device according to <8>, wherein the side support member has a region provided between the iron core and the upper support plate. <Part 10> The static induction electric device described in <9>, wherein the side support member is integrally formed in the region between the buffer member and the upper support member and the region between the iron core and the upper support plate. <Part 11> A static induction electric device according to <10>, wherein a plurality of the aforementioned iron cores are provided between the upper support members, and each of the aforementioned iron cores has a side support member. <Part 12> The static induction electric device according to any one of items <1> to <11>, wherein the buffer member is made of a material with lower hardness than the upper support member. <Part 13> The aforementioned buffering member is a non-magnetic material, as described in <No. 12>, for the stationary induction electric device. <Part 14> The buffer member is an insulator, as described in <13>, for the static induction electric device. <Part 15> The buffer member is formed from a press board, as described in <No. 14>, a static induction electric device. [Explanation of Symbols]

[0066] 1: Winding 1A: Inner winding 1B:Outer winding 2: Iron Heart 3: Upper support member 4: Fastening member 5: Cushioning material 5A: One cushioning material 5B: Recess of the cushioning material 5C: Physical part of the cushioning material 10: Side support member 11: Upper support plate 12: Fastening members 15: Upper and lower support members

Claims

1. A static induction electric device having windings and an iron core, wherein the iron core holding means supports the iron core at a position above the windings, The aforementioned core holding means includes an upper support member, an upper support plate, and upper and lower support members. A static induction electric device having a buffer member with an upper and lower through-flow channel between the upper support member and the iron core.

2. The static induction electric device according to claim 1, wherein the buffer member is composed of multiple layers and has grooves that constitute the upper and lower through-flow channels.

3. The static induction electric device according to claim 2, wherein one of the cushioning members has a plurality of recesses that constitute the groove.

4. The static induction electric device according to claim 3, wherein multiple of the cushioning members have multiple recesses that constitute the groove, and are arranged between adjacent cushioning members at a position where the multiple recesses overlap.

5. The static induction electric device according to claim 3, wherein multiple of the cushioning members have multiple recesses that constitute the groove, and the multiple recesses are arranged to be offset between adjacent cushioning members.

6. The static induction electric device according to claim 3, wherein multiple of the cushioning members have multiple recesses that constitute the groove, and the cushioning members are arranged such that the direction of extension of the multiple recesses differs between adjacent cushioning members.

7. The static induction electric device according to claim 1, wherein the buffering member is composed of a corrugated plate.

8. The static induction electric device according to claim 1, wherein a side support member is sandwiched between the buffer member and the upper support member.

9. The static induction electric device according to claim 8, wherein the side support member has a region provided between the iron core and the upper support plate.

10. The static induction electric device according to claim 9, wherein the side support member is integrally formed in the region between the buffer member and the upper support member and in the region between the iron core and the upper support plate.

11. The static induction electric device according to claim 10, wherein a plurality of the iron cores are provided between the upper support members, and each of the iron cores has a side support member.

12. The static induction electric device according to any one of claims 1 to 11, wherein the buffer member is made of a material with lower hardness than the upper support member.

13. The static induction electric device according to claim 12, wherein the buffering member is made of a non-magnetic material.

14. The static induction electric device according to claim 13, wherein the buffering member is an insulator.

15. The static induction electric device according to claim 14, wherein the buffer member is formed of a press board.

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