Vibration damping part and transformer comprising same

Abstract

Disclosed are a vibration damping portion and a transformer including the same. According to one aspect of the present invention, a damping part may comprise: a frame coupled to an outer wall body part; a partition wall member located inside the frame so as to divide a space formed inside the frame into a plurality of parts; a resonance space forming a space on the opposite side from the wall body portion among the plurality of spaces partitioned by the partition wall member, and configured so as to reduce the transmitted vibration or noise by a resonance phenomenon; a transmission space forming a space facing the other side of the wall body portion among the plurality of spaces partitioned by the partition wall member; and a pipe member which is coupled to the partition wall member in a penetrating manner and which connects the resonance space and the transmission space.

Description

Technical Field

[0001] The present invention relates to a vibration damping unit and a transformer including the vibration damping unit. More specifically, the present invention relates to a vibration damping unit capable of reducing vibrations or noises generated during operation and radiated to the outside, and a transformer including the vibration damping unit. Background Art

[0002] A transformer is a general term for a device that uses electromagnetic induction to change the value of an alternating voltage or an alternating current. A transformer includes a coil that is energized from the outside and receives an alternating current, and an iron core around which the coil is wound. A plurality of coils are provided and wound around the iron core respectively.

[0003] When an alternating current is applied to any one of the coils, a magnetic flux is formed in the iron core. According to the change in the magnetic flux, a current induced by electromagnetic induction flows in another coil. The induced current may have a current or voltage different from the applied alternating current and is transmitted to an external load.

[0004] The iron core provided in the transformer is formed by stacking a plurality of iron plates or the like. As the transformer operates, a magnetostrictive phenomenon occurs in the iron core. Through the magnetostrictive phenomenon, vibrations, noises, etc. may be generated in the iron core. The generated vibrations and noises are transmitted to the outside, which may have an adverse effect on the environment where the transformer is installed.

[0005] Specifically, the generated vibrations can be transmitted to other components of the transformer and other devices connected to the transformer. As a result, there is a risk that the coupling state between the components of the transformer and the coupling state between the transformer and other devices may become unstable.

[0006] To this end, technologies for reducing vibrations or noises generated during the operation of a transformer have been introduced.

[0007] Korean Patent Publication No. 10-1530347 discloses an anti-vibration support device for a substation transformer. Specifically, an anti-vibration support device for a substation transformer is disclosed, which supports the substation transformer and absorbs the self-vibrations of the transformer and vibrations generated by external influences transmitted to the transformer, thereby being able to block the generated vibrations.

[0008] However, the anti-vibration support device disclosed in the above-mentioned prior art document can only support a transformer of a preset size and weight. That is, when the weight or size of the transformer changes, the anti-vibration support device needs to be redesigned according to the increased weight or size. That is, the anti-vibration support device disclosed in the above-mentioned prior art document can only support a transformer of a preset size and weight and it is difficult to support other transformers of different sizes and weights.

[0009] In addition, the anti-vibration support device disclosed in the prior literature is configured to support the transformer from below. Therefore, the height of the transformer and the anti-vibration support device increases, and there is a limitation in that it is difficult to accommodate in an existing substation.

[0010] Korean Patent Publication No. 10-1661138 discloses an anti-vibration support device for a substation transformer. Specifically, an anti-vibration support device is disclosed that absorbs the vibration of the transformer by stacking buffer blocks inside a box partially buried in the ground and coupling the transformer to the buffer blocks.

[0011] However, the prerequisite for the anti-vibration support device disclosed in the prior literature is that it is buried in the ground, that is, underground. Therefore, when the transformer is disposed separately from the ground, it is difficult to apply the anti-vibration support device of the prior literature.

[0012] In addition, the anti-vibration support device disclosed in the prior literature is also configured to support the transformer from below. Therefore, the vibration generated during the operation of the transformer can be absorbed from below, but it is difficult to reduce the vibration radiated in other directions.

[0013] Korean Patent Publication No. 10-1530347 (June 29, 2015)

[0014] Korean Patent Publication No. 10-1661138 (October 10, 2016) Summary of the Invention

[0015] Problems to be Solved by the Invention

[0016] The present invention is for solving the problems described above, and an object of the present invention is to provide a vibration damping unit having a structure capable of reducing vibration generated during operation or noise generated therefrom, and a transformer including the vibration damping unit.

[0017] Another object of the present invention is to provide a vibration damping unit having a structure capable of strengthening the rigidity of the structure for accommodating members for power supply, and a transformer including the vibration damping unit.

[0018] Still another object of the present invention is to provide a vibration damping unit having a structure capable of simply reducing vibration or noise generated therefrom, and a transformer including the vibration damping unit.

[0019] Still another object of the present invention is to provide a vibration damping unit having a structure that can be designed and changed into various forms, and a transformer including the vibration damping unit.

[0020] Still another object of the present invention is to provide a vibration damping unit having a structure capable of reducing various vibrations or noise generated therefrom, and a transformer including the vibration damping unit.

[0021] The problems of the present invention are not limited to the problems mentioned above, and those of ordinary skill in the art can clearly understand other unmentioned problems from the following description.

[0022] Technical solutions for solving the problems

[0023] According to one aspect of the present invention, there is provided a vibration damping part, which includes: a frame combined with an external wall part; a partition member located inside the frame to divide the space formed inside the frame into a plurality of spaces; a resonance space formed on the side space opposite to the wall part among the plurality of spaces separated by the partition member, and configured to reduce the transmitted vibration or noise by resonance phenomenon; a transmission space formed on the other side space facing the wall part among the plurality of spaces separated by the partition member; and a pipe member penetrating and combined with the partition member to communicate the resonance space and the transmission space.

[0024] At this time, there can be provided a vibration damping part, wherein the frame includes: a first frame disposed to bias towards the one side space and partially surrounding the resonance space; a second frame and a third frame respectively connected to the first frame and disposed facing each other across the resonance space; and a pair of fourth frames respectively connected to the first frame to the third frame and disposed facing each other across the resonance space.

[0025] In addition, there can be provided a vibration damping part, wherein the transmission space is surrounded by the second to fourth frames, the partition member, and the wall part, and receives the vibration transmitted to the wall part, and the resonance space is surrounded by the first frame to the fourth frame and the partition member, and receives the vibration through the pipe member.

[0026] At this time, there can be provided a vibration damping part, wherein the pipe member extends between the resonance space and the transmission space, and one end portion in its extending direction is located in the resonance space, and the other end portion in its extending direction is located in the transmission space.

[0027] In addition, there can be provided a vibration damping part, wherein a pipe hollow is formed inside the pipe member, and the pipe hollow is formed to penetrate along its extending direction and communicate with the resonance space and the transmission space respectively.

[0028] At this time, there can be provided a vibration damping part, wherein a plurality of the pipe members are provided, the plurality of pipe members are spaced apart from each other and combined with the partition member at different positions, and the cross-sectional areas of the pipe hollows formed in the plurality of pipe members are configured to be the same as each other.

[0029] Alternatively, a vibration damping portion can be provided, wherein a plurality of the pipe members are provided, the plurality of the pipe members are spaced apart from each other and are combined with the partition wall member at different positions, and cross-sectional areas of the pipe bores formed in the plurality of the pipe members are configured to be different from each other.

[0030] At this time, a vibration damping portion can be provided, which includes resonance through-holes that are formed through the partition wall member in a manner spaced apart from the pipe members and that connect the resonance space and the transmission space.

[0031] Alternatively, a vibration damping portion can be provided, wherein a plurality of the resonance through-holes are formed, the plurality of the resonance through-holes are arranged spaced apart from each other, and diameters of cross-sections of the plurality of the resonance through-holes are formed to be the same.

[0032] At this time, a vibration damping portion can be provided, wherein a plurality of the resonance through-holes are formed, the plurality of the resonance through-holes are arranged spaced apart from each other, and diameters of cross-sections of the plurality of the resonance through-holes are formed to be different.

[0033] In addition, according to an aspect of the present invention, a transformer can be provided, which includes: a housing including a housing space and a wall portion surrounding the housing space; a power supply portion accommodated in the housing space and electrically connectable to an external power supply and a load; and a vibration damping portion combined with the wall portion and configured to receive vibration generated from the power supply portion and attenuate the vibration, the vibration damping portion including: a frame combined with the wall portion surrounding the housing space and having a space formed therein; a transmission space forming a part of the space of the frame and disposed biased toward the wall portion; a resonance space forming the remaining part of the space of the frame and disposed opposite to the wall portion; and a pipe member accommodated in the space of the frame and configured to connect the transmission space and the resonance space.

[0034] At this time, a transformer can be provided, wherein the vibration damping portion includes a partition wall member that is located in the space of the frame in a manner facing the wall portion with the transmission space therebetween and that divides the space of the frame into the transmission space and the resonance space, and the pipe member is combined with the partition wall member.

[0035] Alternatively, a transformer can be provided, wherein the pipe member extends between the transmission space and the resonance space, one end portion in its extending direction is located in the transmission space, the other end portion is located in the resonance space, and a pipe bore is formed through the inside of the pipe member to connect the transmission space and the resonance space.

[0036] At this time, a transformer can be provided, wherein a plurality of the pipe members are provided, and the plurality of the pipe members are configured to make the transfer space and the resonance space at different positions.

[0037] In addition, a transformer can be provided, wherein the damping portion includes resonance through holes, the resonance through holes are formed through the partition member spaced apart from the pipe members, and communicate the transfer space and the resonance space.

[0038] At this time, a transformer can be provided, wherein a plurality of the damping portions are provided, and the plurality of the damping portions are stacked on each other in the height direction of the cover body.

[0039] In addition, a transformer can be provided, wherein the pipe members provided in the plurality of the damping portions are formed to have different inner diameters.

[0040] Advantages of the Invention

[0041] According to the above configuration, the damping portion of the embodiment of the present invention and the transformer including the damping portion can reduce vibration generated during operation or noise generated thereby.

[0042] The transformer includes a cover body. A cover body space is formed inside the cover body, and a power supply portion that is electrically connected to an external power supply and a load is accommodated in the cover body space. When the transformer operates, the current applied from the power supply to the power supply portion can be transferred to an external load through a voltage transformation process.

[0043] At this time, the iron core member provided in the power supply portion is formed by stacking a plurality of iron plates, and as the transformer operates, the plurality of iron plates vibrate to generate vibration and noise.

[0044] A damping portion is coupled to the outside of the cover body. The damping portion includes a mass portion, and the mass portion can vibrate at a predetermined natural frequency by vibration. When vibration occurs, the mass portion also vibrates at a natural frequency capable of canceling the generated vibration.

[0045] As is well known, sound is a kind of wavelength. Therefore, by adjusting the natural frequency of vibration of the damping portion, the vibration generated in the transformer can be canceled to reduce the intensity of the vibration.

[0046] Thereby, the vibration or noise generated due to the operation of the transformer can be reduced.

[0047] In addition, according to the above configuration, the damping portion of the embodiment of the present invention and the transformer including the damping portion can strengthen the rigidity of the configuration for accommodating members for power supply.

[0048] In one embodiment, a plurality of vibration damping portions may be provided and stacked in the height direction of the housing. That is, in the said embodiment, the vibration damping portions may be provided in a modular manner and combined in the height direction of the housing. In one embodiment, the vibration damping portions may be stacked in the height direction of the housing.

[0049] The plurality of stacked vibration damping portions may be combined with the wall portion forming the outer shape of the housing. The plurality of vibration damping portions can strengthen the rigidity of the wall portion, thereby preventing damage to the wall portion caused by thermal expansion of the oil contained in the housing space, etc.

[0050] A plurality of stacked vibration damping portions (i.e., a group of vibration damping portions) may be provided. The plurality of groups of vibration damping portions may be arranged at intervals from each other in the width direction of the wall portion. Each group of vibration damping portions can reduce the vibration generated in the energizing portion contained in the interior of the housing or the noise generated thereby, and at the same time, can strengthen the rigidity of the wall portion.

[0051] Thus, the rigidity of the housing forming the outer shape of the transformer can be strengthened by the vibration damping portions.

[0052] In addition, according to the above configuration, the vibration damping portion of the embodiment of the present invention and the transformer including the vibration damping portion can simply reduce vibration or the noise generated thereby.

[0053] The vibration damping portion forms a frame forming the outer shape. The frame is combined with the wall portion, and the space formed inside it is surrounded and sealed by the frame and the wall portion. The vibration or noise generated in the energizing portion contained in the interior of the housing can be transmitted through the wall portion to the space formed inside the frame.

[0054] A partition wall member is provided inside the frame. The partition wall member divides the space formed inside the frame into a plurality of spaces. One of the plurality of spaces facing the wall portion is defined as a transmission space and receives vibration from the wall portion. The other space opposite to the wall portion among the plurality of spaces may be defined as a resonance space and can cancel the received vibration.

[0055] The transmission space and the resonance space are connected by a tube hollow formed inside the tube member. The vibration transmitted to the transmission space can be propagated to the resonance space via the tube hollow.

[0056] On the other hand, the vibration damping portion is combined with the wall portion forming the outer shape of the housing. That is, it is not necessary to change the structure of the housing or the energizing portion contained in the housing in order to provide the vibration damping portion.

[0057] Therefore, the generated vibration or the noise generated thereby can be simply reduced. Furthermore, after manufacturing and installing the transformer, the vibration damping portion can also be additionally installed, thereby improving the manufacturing and design convenience.

[0058] In addition, according to the above configuration, the vibration damping part of the embodiment of the present invention and the transformer including the vibration damping part can be designed and changed into various forms.

[0059] In one embodiment, the vibration damping part can be configured such that the transmission space and the resonance space are connected only through one pipe member. In another embodiment, a plurality of pipe members can be provided, and the transmission space and the resonance space can be connected through the plurality of pipe members. In still another embodiment, resonance through-holes can also be formed in the partition member. The resonance through-holes can connect the transmission space and the resonance space independently of the pipe member.

[0060] That is, the vibration transmitted to the transmission space can be propagated and transmitted to the resonance space in various forms. Thereby, the design freedom and product applicability of the vibration damping part and the transformer including the vibration damping part can be improved.

[0061] In addition, according to the above configuration, the vibration damping part of the embodiment of the present invention and the transformer including the vibration damping part can reduce various vibrations or the noise generated thereby.

[0062] The frequency of the vibration that the vibration damping part can cancel can be adjusted by various factors such as the volume of the resonance space, the length of the pipe member, and the cross-sectional area of the hollow of the pipe.

[0063] At this time, the plurality of pipe members and the plurality of resonance through-holes can be formed to have different sizes. That is, the length of the pipe member, the cross-sectional area of the hollow of the pipe, the thickness of the partition member, and the cross-sectional area of the resonance through-hole can be configured in various forms.

[0064] The vibration damping part can be provided in a modular manner. In an embodiment of stacked combination, each vibration damping part of the vibration damping parts forming a group can be formed to have a different natural frequency. That is, the vibration damping parts of a group can cancel vibrations of various natural frequencies.

[0065] Therefore, it is possible to cancel vibrations of various frequencies simultaneously or at different times by variously changing the structure of the vibration damping part. Thereby, various vibrations or the noise generated thereby can be reduced.

[0066] The effects of the present invention are not limited to the above effects, and it should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention. Description of the Drawings

[0067] Figure 1 It is a perspective view showing a transformer according to an embodiment of the present invention.

[0068] Figures 2 to 3 It is shown in Figure 1 The perspective view of the state where the heat dissipation part is disassembled in the transformer of.

[0069] Figure 4 is a perspective sectional view taken along line A-A of the energized portion inside the transformer provided in Figure 1 .

[0070] Figure 5 is a perspective view showing Figure 2 a partially enlarged perspective view of part B of the transformer in

[0071] Figure 6 is a perspective view showing Figure 2 a partially enlarged perspective view of part C of the transformer in

[0072] Figure 7 is a perspective view showing Figure 2 a partially enlarged perspective view of part C of the transformer in

[0073] Figure 8 is a perspective view showing Figure 2 a partially enlarged perspective view of part E of the transformer in

[0074] Figure 9 is a perspective view of the vibration damping portion according to an embodiment of the present invention.

[0075] Figure 10 is a perspective view showing Figure 9 the exploded perspective view of the vibration damping portion in

[0076] Figure 11 is a sectional view showing Figure 9 the vibration damping portion in

[0077] Figure 12 is a perspective view (a) and a partially enlarged perspective view (b) showing Figure 9 another embodiment of the vibration damping portion in

[0078] Figure 13 is a sectional view showing Figure 12 the vibration damping portion of the embodiment in

[0079] Figure 14 is a perspective view showing Figure 9 yet another embodiment of the vibration damping portion in

[0080] Figure 15 is a perspective view showing Figure 14 the sectional view of the vibration damping portion of the embodiment in

[0081] Figure 16 is a conceptual diagram showing Figures 12 to 15 an application example of the vibration damping portion in

[0082] Figure 17 is a perspective view showing Figure 9 yet another embodiment of the vibration damping portion in

[0083] Figure 18It is a perspective view of a transformer with a vibration damping part to which another embodiment of the present invention is applied.

[0084] Figure 19 It is a perspective view showing Figure 18 the vibration damping part of the transformer provided in

[0085] Figure 20 It is a perspective view showing Figure 19 the F - F line sectional view of the vibration damping part of

[0086] Figure 21 It is a sectional view showing Figure 19 the F - F line sectional view of the vibration damping part of

[0087] Figure 22 It is a sectional view showing Figure 19 the G - G line sectional view of the vibration damping part of

[0088] Figure 23 It is a front view showing Figure 19 another embodiment of the vibration damping part of Detailed Description of the Invention

[0089] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily implement it. The present invention can be implemented in various different ways and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted, and throughout the specification, the same or similar components are given the same reference numerals.

[0090] The terms and phrases used in this specification and the claims should not be construed as being limited to the ordinary or dictionary meanings, but rather should be interpreted based on the principle that the inventor can define terms and concepts in order to best explain the present invention, in accordance with the meanings and concepts that conform to the technical idea of the present invention.

[0091] Therefore, the embodiments described in this specification and the configurations shown in the drawings are equivalent to a preferred embodiment of the present invention and do not represent all the technical ideas of the present invention. Therefore, there can be various equivalent and modified examples that can be substituted for the corresponding configurations when the present invention is applied for.

[0092] In the following description, in order to more clearly show the features of the present invention, the description of some structural elements may be omitted.

[0093] 1. Definition of Terms

[0094] As used in the following description, the term "connected" means that more than one component is connected in such a way that fluid can flow smoothly between them. In one embodiment, the connection can be formed by components such as pipelines, tubes, and piping. In the following description, "connected" can be used to mean that more than one component is "fluidly connected" to each other.

[0095] As used in the following description, the term "energized" means that more than one component is connected to each other in such a way that an electric current or an electrical signal can be transmitted. In one embodiment, the energization can be formed in a wired manner using wire components or in a wireless manner such as Bluetooth, Wi-Fi, RFID, etc. In one embodiment, the energization can include the meaning of "communication".

[0096] As used in the following description, the term "fluid" means any form of matter that can flow under the action of an external force and can change its shape or volume, etc. In one embodiment, the fluid can be a liquid such as water or a gas such as air.

[0097] As used in the following description, the terms "upper side", "lower side", "left side", "right side", "front side", and "rear side" can be understood with reference to Figure 1 and Figure 18 the coordinate system shown in

[0098] 2. Description of the vibration damping unit 600 of an embodiment of the present invention and the transformer 10 including the vibration damping unit 600

[0099] Referring to Figures 1 to 17 , the respective components of the vibration damping unit 600 of an embodiment of the present invention and the transformer 10 including the vibration damping unit 600 are shown.

[0100] The vibration damping unit 600 of the present embodiment can be combined with the components in each component of the transformer 10 that resonate and generate noise due to the vibration generated during the operation of the transformer 10. The vibration damping unit 600 can be configured to reduce the generated noise by canceling the vibration generated in the components.

[0101] As described later, the components can be arranged to protrude from the transformer 10 or combined with the transformer 10 at one position. That is, compared with other components, the components may be more likely to resonate due to the vibration generated in the transformer 10 and cause noise.

[0102] Therefore, the vibration damping unit 600 of the present embodiment can be configured to be combined with the components and cancel the generated vibration. Thereby, the noise generated in the components can also be reduced.

[0103] The damping part 600 described below and the damping part 700 of another embodiment described later can be selectively provided. In other words, in the transformer 10 of the embodiment of the present invention, either one or more of the damping part 600 of the present embodiment and the damping part 700 of another embodiment can be provided.

[0104] Thereby, the vibration generated during the operation of the transformer 10 can be effectively offset or reduced, and the noise generated due to the vibration can also be reduced.

[0105] The transformer 10 of an embodiment of the present invention is configured to be able to reduce the vibration or noise caused by magnetostriction generated in the iron core member 210 during operation. This can be achieved through the damping part 600.

[0106] The transformer 10 is connected to the outside so as to be energizable. The transformer 10 can receive a current that is the object of voltage regulation. The transformer 10 can transmit the current with the regulated voltage to the outside. In one embodiment, the current may be an alternating current (AC).

[0107] The operating principle of the transformer 10 is a well-known technology, so a detailed description thereof is omitted.

[0108] Hereinafter, with reference to the drawings, the configuration of the damping part 600 of an embodiment of the present invention and the transformer 10 including the damping part 600 will be described in detail.

[0109] In Figures 1 to 8 the illustrated embodiment, the transformer 10 includes a housing 100, a power supply part 200, an oil supply part 300, a heat dissipation part 400, a noise generation part 500, and a damping part 600.

[0110] The housing 100 forms the outer shape of the transformer 10. A space is formed inside the housing 100, and various components of the transformer 10 can be accommodated. The space of the housing 100 is energized with the outside, and the current that is the object of voltage transformation can be transmitted. In addition, the current after voltage transformation can be transmitted back to the outside.

[0111] The housing 100 forms the outer shape of the transformer 10, and can be any shape capable of installing various components. In the illustrated embodiment, the housing 100 is a quadrangular prism shape extending in the up and down direction with a cross-section having a longer extension length in the left and right direction than in the front and back direction.

[0112] In the illustrated embodiment, the housing 100 includes a wall body part 110, a housing space 120, and a reinforcing part 130.

[0113] The wall body part 110 forms the outer periphery of the cover body 100. The wall body part 110 surrounds from the outside the space formed inside the cover body 100, that is, the cover body space 120.

[0114] A plurality of wall body parts 110 may be provided. The plurality of wall body parts 110 may form the outer periphery of the cover body 100 at mutually different positions. In the illustrated embodiment, the wall body part 110 includes a pair of wall body parts that are spaced apart from each other in the vertical direction and face each other, another pair of wall body parts that are spaced apart from each other in the left - right direction and face each other, and one wall body part located on the rear side. Each pair of wall body parts 110 is arranged to face each other with the cover body space 120 therebetween.

[0115] The wall body part 110 may be of any shape that can form the outer periphery of the cover body 100 and surround the cover body space 120. In the illustrated embodiment, the wall body part 110 is in the shape of a quadrilateral plate formed by extending a prescribed thickness with a quadrilateral cross - section.

[0116] The plurality of wall body parts 110 may form a prescribed angle with each other and be connected. In the illustrated embodiment, the wall body parts 110 that are adjacent to each other among the plurality of wall body parts 110 are connected perpendicularly to each other. The joining manner of the plurality of wall body parts 110 may be changed according to the structure of the cover body 100.

[0117] The plurality of wall body parts 110 are arranged to surround the cover body space 120 at a plurality of positions. In the illustrated embodiment, the plurality of wall body parts 110 are arranged to surround the cover body space 120 from the front side, the rear side, the upper side, the lower side, the left side, and the right side, respectively.

[0118] In the illustrated embodiment, the wall body part 110 includes a first wall 111, a second wall 112, a third wall 113, a fourth wall 114, and a fifth wall 115.

[0119] The first wall 111 is any one of the walls of the wall body part 110. The first wall 111 surrounds the cover body space 120 from one side. In the illustrated embodiment, the first wall 111 is arranged on the front side and surrounds the cover body space 120 from the front side. The first wall 111 is arranged to face the second wall 112 with the cover body space 120 therebetween.

[0120] The second wall 112 is another wall of the wall body part 110. The second wall 112 surrounds the cover body space 120 from the other side. In the illustrated embodiment, the second wall 112 is arranged on the rear side and surrounds the cover body space 120 from the rear side. The second wall 112 is arranged to face the first wall 111 with the cover body space 120 therebetween.

[0121] The third wall 113 is another wall in the wall body portion 110. The third wall 113 surrounds the housing space 120 from the other side. In the illustrated embodiment, the third wall 113 is disposed on the left side and surrounds the housing space 120 from the left side. The third wall 113 is disposed opposite to the fourth wall 114 with the housing space 120 therebetween.

[0122] The fourth wall 114 is another wall in the wall body portion 110. The fourth wall 114 surrounds the housing space 120 from the other side. In the illustrated embodiment, the fourth wall 114 is disposed on the right side and surrounds the housing space 120 from the right side. The fourth wall 114 is disposed opposite to the third wall 113 with the housing space 120 therebetween.

[0123] A plurality of reinforcing portions 130 are formed in any one or more of the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114. In the illustrated embodiment, the reinforcing portions 130 are formed in the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114. The reinforcing portions 130 extend in the vertical direction and strengthen the rigidity of the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114.

[0124] The fifth wall 115 is another wall in the wall body portion 110. The fifth wall 115 is disposed to cover the housing space 120. In the illustrated embodiment, the fifth wall 115 is disposed on the upper side and surrounds the housing space 120 from the upper side.

[0125] Although not shown, the wall body portion 110 may include another wall that surrounds the housing space 120 from the lower side. The another wall may be disposed on the lower side and surround the housing space 120 from the lower side. In the above embodiment, the another wall is disposed opposite to the fifth wall 115 with the housing space 120 therebetween.

[0126] The housing space 120 is a space formed inside the housing 100. The housing space 120 houses various components of the transformer 10. In one embodiment, the housing space 120 may house the power supply unit 200. The housing space 120 is a space surrounded by a plurality of wall body portions 110.

[0127] The housing space 120 is electrically connected to the outside. The current to be transformed can be transmitted to the components housed in the housing space 120. In addition, the current stepped up or down by the power supply unit 200 can be transmitted to the outside. For this purpose, a plurality of wire members (not shown) extending from the outside can be partially housed in the housing space 120.

[0128] The housing space 120 communicates with the oil supply unit 300. The oil accommodated in the oil supply unit 300, such as insulating oil, can flow into the housing space 120 and fill the housing space 120. The insulating oil is configured to insulate the energizing unit 200 accommodated in the housing space 120 from other components of the housing 100.

[0129] The reinforcing part 130 is combined with the wall part 110 to strengthen the rigidity of the wall part 110. The reinforcing part 130 extends along one direction in which the wall part 110 extends, and is formed to extend in the up-down direction in the illustrated embodiment.

[0130] A plurality of reinforcing parts 130 may be provided. The plurality of reinforcing parts 130 may be arranged at intervals from each other in a direction different from the direction in which the wall part 110 extends. In Figures 1 to 4 the illustrated embodiment, the reinforcing parts 130 may be arranged at intervals from each other in the front-rear direction.

[0131] The reinforcing part 130 may be formed at a plurality of positions. As described above, a plurality of wall parts 110 may be provided and arranged to surround the housing space 120 from various directions. Therefore, the reinforcing part 130 may be formed on each of the plurality of wall parts 110. In the illustrated embodiment, the reinforcing parts 130 are respectively formed on the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114.

[0132] The reinforcing part 130 may be any shape that is combined with the wall part 110 and can strengthen the rigidity of the wall part 110. In the illustrated embodiment, the reinforcing part 130 may be formed to extend in the up-down direction and have a predetermined thickness toward the outside in a column shape. Additionally, in the illustrated embodiment, the reinforcing part 130 is provided in the form of an I-Beam.

[0133] The energizing unit 200 steps up or steps down the current transmitted from the outside. Therefore, it can be regarded that the energizing unit 200 actually performs the function of the transformer 10.

[0134] The energizing unit 200 is accommodated in the housing space 120. The housing space 120 is defined by being surrounded by a plurality of wall parts 110. Therefore, the energizing unit 200 accommodated in the housing space 120 is also surrounded by the plurality of wall parts 110 and will not be exposed to the outside arbitrarily.

[0135] Therefore, the energizing unit 200 will not be damaged by the environment outside the transformer 10. Additionally, the operator staying near the transformer 10 is physically separated from the energizing unit 200, thereby being able to prevent safety accidents caused by the current flowing in the energizing unit 200.

[0136] The energizing unit 200 is energized from the outside. Such energization can be formed by a wire member (not shown) that energizes the housing space 120 from the outside or the like. The process of boosting or reducing the voltage of the flowing current through the energizing unit 200 is a well-known technique, and thus detailed description thereof is omitted.

[0137] The energizing unit 200 accommodated in the housing space 120 can be surrounded by oil (i.e., insulating oil) filled in the housing space 120. Thereby, an electrically insulated state can be maintained between the other components of the housing 100 and the energizing unit 200.

[0138] In the illustrated embodiment, the energizing unit 200 includes an iron core member 210 and a winding member 220.

[0139] The iron core member 210 forms the structure of the energizing unit 200. A plurality of winding members 220 energized from the outside are wound around the iron core member 210. When current is applied to any one or more of the plurality of winding members 220, magnetic flux is generated in the iron core member 210. The generated magnetic flux generates an induced electromotive force in one or more of the other winding members 220 among the plurality of winding members 220.

[0140] The iron core member 210 can be formed by stacking a plurality of plates. In one embodiment, the iron core member 210 is formed by stacking a plurality of plates having a thickness in the front-rear direction.

[0141] The plurality of plates constituting the iron core member 210 can be formed of any material capable of forming magnetic flux through the current flowing in the winding member 220. In one embodiment, the plates can be formed of wrought iron material.

[0142] The iron core member 210 can be formed in any shape capable of winding a plurality of winding members 220 to form magnetic flux.

[0143] The winding member 220 is wound around the iron core member 210. The current flowing in the winding member 220 generates magnetic flux in the iron core member 210, and the current can be boosted or reduced by the induced electromotive force generated by the generated magnetic flux and transmitted to the outside.

[0144] The winding member 220 is energized from the outside. The current to be boosted or reduced can be transmitted to the winding member 220. The boosted or reduced current can be transmitted to the outside.

[0145] The winding member 220 is wound around the iron core member 210. Specifically, the winding member 220 is wound around a portion of the iron core member 210 that extends in the height direction, the up-down direction in the illustrated embodiment.

[0146] The winding member 220 is accommodated in the iron core member 210. Specifically, the winding member 220 is accommodated in the space surrounded by the portions formed to extend in the height direction.

[0147] A plurality of winding members 220 may be provided. The plurality of winding members 220 are arranged spaced apart from each other and may be wound around the iron core member 210 at different positions.

[0148] In the illustrated embodiment, three winding members 220 are provided and arranged spaced apart from each other. The plurality of winding members 220 do not contact each other.

[0149] Any one of the plurality of winding members 220 is energized from the outside and can receive a current to be stepped up or down. Another one of the plurality of winding members 220 is energized from the outside and can transfer the stepped-up or stepped-down current to the outside.

[0150] An induced current induced by the current flowing through any one of the plurality of winding members 220 may flow through the remaining one of the plurality of winding members 220. In addition, the remaining one of the plurality of winding members 220 may induce a current to the other one of the plurality of winding members 220 through the induced current.

[0151] The winding member 220 may be formed in any shape that can be wound around the iron core member 210 and generate an induced electromotive force. In the illustrated embodiment, the winding member 220 has a cylinder shape with a hollow circular cross-section formed therein and extending in the vertical direction.

[0152] The winding member 220 may be formed in any shape that allows the induced current induced by the current flowing through any one of the plurality of winding members 220 to flow. In one embodiment, the winding member 220 may be formed as a coil.

[0153] The oil supply unit 300 stores the oil supplied to the cover space 120. The oil supply unit 300 communicates with the cover space 120 and can transfer the stored oil to the cover space 120.

[0154] The oil supply unit 300 is coupled to the cover 100. The oil supply unit 300 is arranged to be exposed to the outside of the cover 100. In the illustrated embodiment, the oil supply unit 300 is located at the upper left side of the cover 100.

[0155] The oil supply unit 300 may be of any shape that can store oil and supply the stored oil to the cover space 120. In the illustrated embodiment, the oil supply unit 300 has a circular cross-section and a cylindrical shape with a length in the front-rear direction.

[0156] The piping member 510 is coupled to the oil supply unit 300. The oil supply unit 300 can communicate with the housing space 120 through the piping member 510. At this time, the piping member 510 is coupled to the outer surface of the oil supply unit 300, so that noise caused by vibration may be generated.

[0157] Therefore, the transformer 10 according to an embodiment of the present invention includes a vibration damping unit 600 coupled to the piping member 510, which can reduce the noise generated in the piping member 510. This will be described in detail later.

[0158] The heat dissipation unit 400 is configured to discharge the heat generated as the transformer 10 operates to the outside. The heat dissipation unit 400 is coupled to the wall portion 110 of the housing 100 and receives heat, and can radiate the received heat to the outside. Thereby, the energization unit 200 and the oil accommodated in the housing space 120 are cooled, and overheating can be prevented.

[0159] The heat dissipation unit 400 may be configured in any form that can receive the heat generated in the housing space 120 and discharge it to the outside to cool the energization unit 200 and the oil. In one embodiment, the heat dissipation unit 400 may be constituted by a radiator.

[0160] A plurality of heat dissipation units 400 may be provided. The plurality of heat dissipation units 400 may be configured to be respectively coupled to different parts of the housing 100 and discharge the heat generated in the housing space 120 to the outside. In the illustrated embodiment, four heat dissipation units 400 are provided, and a pair of heat dissipation units 400 are respectively located on the left and right sides of the first wall 111, and the other pair of heat dissipation units 400 are respectively located on the left and right sides of the second wall 112.

[0161] The noise generating unit 500 is located outside the transformer 10 and is a general term for a structure that resonates due to the vibration generated by the energization unit 200 and generates noise. The noise generating unit 500 may be combined with the structure exposed to the outside of the transformer 10, such as the housing 100 or the oil supply unit 300.

[0162] The noise generating unit 500 may include a structure in the shape of a pipe or a rod. That is, the noise generating unit 500 is formed in any shape in which the diameter or outer diameter of the cross section is shorter than its extended length. Therefore, the noise generating unit 500 can completely receive the vibration generated in the energization unit 200 and resonate to generate strong noise.

[0163] In the illustrated embodiment, the noise generating unit 500 includes a piping member 510 and a ladder member 520.

[0164] The piping member 510 forms a flow path for the oil to flow. The piping member 510 is respectively communicated with the cover body space 120 and the oil supply part 300. The oil accommodated in the oil supply part 300 can flow through the piping member 510 to the cover body space 120. As described above, the oil is filled between the energizing part 200 and the wall body part 110 accommodated in the cover body space 120.

[0165] The piping member 510 is combined with the wall body part 110. In the illustrated embodiment, the piping member 510 is combined with the fifth wall 115 located on the upper side at a plurality of positions. The piping member 510 extends between the plurality of positions. In the illustrated embodiment, the piping member 510 extends in the left - right direction and branches in the up - down direction at a plurality of positions and is combined with the fifth wall 115.

[0166] The piping member 510 is combined with the oil supply part 300. In the illustrated embodiment, the piping member 510 is combined with the upper side of the outer periphery of the oil supply part 300 and extends along the outer periphery of the oil supply part 300. The piping member 510 combined with the oil supply part 300 and the piping member 510 combined with the fifth wall 115 are combined and communicated.

[0167] A vibration damping part 600 described later may be provided in the piping member 510. The vibration damping part 600 is configured to reduce the resonance of the piping member 510 and the noise generated thereby.

[0168] The ladder member 520 provides a path for moving upward to the upper part of the cover body 100 for maintenance and the like. The ladder member 520 is combined with the wall body part 110 of the cover body 100, and in the illustrated embodiment, is combined with the fourth wall 114. The ladder member 520 is formed to extend in the height direction of the cover body 100, and in the illustrated embodiment, extends in the up - down direction.

[0169] The ladder member 520 can be provided in any form that allows an operator to move up and down in the height direction of the cover body 100. In the illustrated embodiment, the ladder member 520 can be provided as a ladder extending in the up - down direction.

[0170] A vibration damping part 600 described later may also be provided in the ladder member 520. The resonance generated in the ladder member 520 and the noise generated thereby can be reduced by the vibration damping part 600.

[0171] Refer back to Figures 1 to 11 , the transformer 10 of the illustrated embodiment includes a vibration damping part 600.

[0172] The vibration damping part 600 of the present embodiment is configured to be combined with the noise generating part 500 and reduce the resonance and the noise generated thereby. By the vibration damping part 600, the vibration or noise generated in the piping member 510 or the ladder member 520 exposed to the outside can be reduced.

[0173] The vibration damping part 600 is combined with the noise generating part 500. The vibration damping part 600 can be configured to cancel out the vibration generated in the noise generating part 500 to reduce noise.

[0174] The vibration damping part 600 can be set in any form that is combined with the noise generating part 500 and can reduce vibration and noise. In the illustrated embodiment, the vibration damping part 600 is composed of a mass and can function as a damper.

[0175] The vibration damping part 600 can be combined with any position of the noise generating part 500. A plurality of vibration damping parts 600 can be provided, and they can be combined with the noise generating part 500 at a plurality of positions respectively.

[0176] In Figure 5 and Figure 6 In the illustrated embodiment, the vibration damping part 600 can be configured to be combined with the piping member 510 that is combined with the oil supply part 300, and reduce the vibration and noise generated in the oil supply part 300 and the piping member 510.

[0177] In Figure 7 and Figure 8 In the illustrated embodiment, the vibration damping part 600 can be configured to be combined with the piping member 510 that is combined with the housing 100, and reduce the vibration and noise generated in the housing 100 and the piping member 510.

[0178] Although not shown, the vibration damping part 600 can be configured to be further provided on the ladder member 520, and reduce the vibration and noise generated in the housing 100 and the ladder member 520.

[0179] Therefore, a plurality of vibration damping parts 600 can be combined with the noise generating part 500 at various positions, and reduce the generated vibration and noise. The plurality of vibration damping parts 600 arranged at each position can cancel out the vibration or noise generated in the housing 100, the power supply part 200 or the oil supply part 300 and propagating in various directions.

[0180] Thereby, the vibration and noise generated at each position are minimized, so that the environment where the transformer 10 is located is improved, and damage to the transformer 10 caused by vibration can be prevented.

[0181] At this time, the vibration damping part 600 can be arranged adjacent to the housing 100 or the oil supply part 300 and be biased to each part of the noise generating part 500. Thus, the vibration generated in the housing 100 or the oil supply part 300 can be reduced before being transmitted to the noise generating part 500, or immediately after being transmitted.

[0182] Referring to Figures 9 to 11 , an example of the vibration damping part 600 according to an embodiment of the present invention is shown.

[0183] In the illustrated embodiment, the vibration damping portion 600 includes a rod portion 610 and a mass portion 620.

[0184] The rod portion 610 is a portion of the piping member 510 or the ladder member 520 that constitutes the noise generating portion 500 and is combined with the mass portion 620. That is, the rod portion 610 is defined as a portion that is adjacent to the mass portion 620 in the constitution of the noise generating portion 500. Therefore, in the following description, it can be understood that the rod portion 610 can be used to support the constitution such as the noise generating portion 500.

[0185] Therefore, the rod portion 610 can be formed in a pipe shape or a rod shape similar to the piping member 510 or the ladder member 520. In other words, the rod portion 610 is formed such that its extended length is longer than the diameter of its cross section. In the illustrated embodiment, the rod portion 610 is formed with a circular cross section and extends in one direction, and a hollow pipe shape is formed inside thereof.

[0186] The rod portion 610 can be divided into a plurality of parts. The plurality of parts can be combined with the mass portion 620 at different positions respectively. In the illustrated embodiment, the rod portion 610 includes a first rod 611 located on the upper side and a second rod 612 located on the lower side.

[0187] In the illustrated embodiment, the first rod 611 and the second rod 612 extend in the up and down direction. One end portion in the extending direction of the first rod 611 is combined with the mass portion 620, and in the illustrated embodiment, the lower end portion is combined with the mass portion 620. One end portion in the extending direction of the second rod 612 is combined with the mass portion 620, and in the illustrated embodiment, the upper end portion is combined with the mass portion 620.

[0188] The one end portion of the first rod 611 and the one end portion of the second rod 612 are combined and communicated with each other through mass hollows 621a, 622a formed inside the mass portion 620.

[0189] For this purpose, a first rod hollow 611a that penetrates in the extending direction thereof is formed inside the first rod 611. In addition, a second rod hollow 612a that penetrates in the extending direction thereof is formed inside the second rod 612. The first rod hollow 611a and the second rod hollow 612a are communicated with each other, and a closed space through which oil can flow can be formed.

[0190] The mass portion 620 is configured to reduce vibrations or noises generated in the rod portion 610. That is, the mass portion 620 functions as a damper.

[0191] The mass portion 620 is combined with the rod portion 610. In one embodiment, the mass portion 620 can be configured to contact the rod portion 610, receive the generated vibration or noise, and cancel it out.

[0192] As the name implies, the mass portion 620 can be formed to have a prescribed mass. At this time, the mass of the mass portion 620 can be determined by the following [Equation 1] related to the natural frequency.

[0193] [Equation 1]

[0194]

[0195] In the above [Equation 1], f can be defined as the natural frequency, m can be defined as the mass of the mass portion 620, and k can be defined as a variable related to the spring constant, i.e., rigidity, of the mass portion 620. Therefore, it can be understood that m can be determined by the density or volume of the mass portion 620, and k can be determined by the material of the mass portion 620, etc.

[0196] In one embodiment, the natural frequency of the mass portion 620 can be determined to be a multiple of 120 Hz. This is because the vibration generated in the transformer 10 generally has a frequency corresponding to a multiple of 120 Hz.

[0197] The mass portion 620 can be of any shape that is combined with the rod portion 610 and can cancel out and reduce the received vibration or noise. In the illustrated embodiment, the mass portion 620 can be in the shape of a disk and can be formed as a plate having a hollow circular ring shape penetrating therethrough in the thickness direction inside thereof.

[0198] The mass portion 620 can be composed of a plurality of parts. One of the plurality of parts can be combined with the first rod 611, and another of the plurality of parts can be combined with the second rod 612.

[0199] In the illustrated embodiment, the mass portion 620 includes: a first mass portion 621, which is located on the upper side and combined with the first rod 611; and a second mass portion 622, which is located on the lower side and combined with the second rod 612. The first mass portion 621 and the second mass portion 622 can be arranged to contact each other.

[0200] A first mass hollow 621a is formed to penetrate through the inside of the first mass portion 621, and the one end portion, i.e., the lower end portion, of the first rod 611 can penetrate through the first mass hollow 621a. The inner circumference of the first mass portion 621 can contact the outer circumference of the inserted first rod 611.

[0201] Inside the second mass portion 622, a second mass hollow 622a is formed therethrough. The one end portion of the second rod 612, that is, the upper end portion, can penetrate through the second mass hollow 622a. The inner circumference of the second mass portion 622 can contact the outer circumference of the inserted second rod 612.

[0202] The first mass hollow 621a and the second mass hollow 622a can be formed corresponding to the shapes of the first rod 611 and the second rod 612. In the illustrated embodiment, the first mass hollow 621a and the second mass hollow 622a are formed as a disk-shaped space having a circular cross-section and a thickness in the vertical direction.

[0203] At this time, the first mass portion 621 and the second mass portion 622 can be formed to have various masses according to the frequency of the vibration to be damped.

[0204] The damping portion 600 of the present embodiment can be applied in the manufacturing and installation steps of the noise generating portion 500. Alternatively, the damping portion 600 can be installed in a manner of being combined with the already installed noise generating portion 500. In this case, the mass members 621, 622 can be configured to be composed of a plurality of parts, and are combined with each other when the rod portions 610 are inserted into the mass hollows 621a, 622a.

[0205] Refer to Figures 12 to 16 , a modified example of the damping portion 600 of the present embodiment is shown.

[0206] In this modified example, the damping portion 600 further includes: a support portion 630 fixed to the noise generating portion 500; and a mass arm 640 coupled to the support portion 630. Therefore, in this modified example, the mass portion 620 is indirectly coupled to the noise generating portion 500 through the support portion 630 and the mass arm 640.

[0207] The support portion 630 is a part where the damping portion 600 is directly coupled to the noise generating portion 500. The support portion 630 can be formed to at least partially surround the outer circumference of the noise generating portion 500. The support portion 630 is directly coupled to the noise generating portion 500.

[0208] In addition, at least a part of the support portion 630 can protrude in the radial direction to be coupled to the mass arm 640. The mass portion 620 can be coupled to the support portion 630 through the mass arm 640.

[0209] In Figure 12 and Figure 13 In the illustrated embodiment, the support portion 630 includes a support body 631, a support arm 632, and a coupling groove 633.

[0210] The support main body 631 is the part where the support portion 630 is combined with the noise generating portion 500. The support main body 631 is formed corresponding to the shape of the outer periphery of the noise generating portion 500 and extends along the outer periphery of the noise generating portion 500. The support main body 631 can be configured to surround the outer periphery of the noise generating portion 500.

[0211] In the illustrated embodiment, the support main body 631 is formed in an arc shape with a central angle of about 180°. In the embodiment, the curvature of the support main body 631 can be formed corresponding to the curvature of the outer periphery of the noise generating portion 500.

[0212] In the embodiment, a pair of support portions 630 can be provided. The pair of support portions 630 can be arranged to face each other with the noise generating portion 500 therebetween, and are configured to surround the noise generating portion 500 at different positions respectively. At this time, the inner surfaces of the pair of support portions 630 can be in contact with the outer surface of the noise generating portion 500 respectively.

[0213] The support main body 631 is connected to the support arm 632.

[0214] The support arm 632 is the part where the support portion 630 is combined with the mass arm 640. The support arm 632 extends outward from each end of the support main body 631. The support arm 632 can extend at a specified angle with respect to the outer periphery of the noise generating portion 500 or the end of the support main body 631. In one embodiment, the specified angle can be a right angle.

[0215] The support arm 632 can be of any shape capable of being combined with the support main body 631 and the mass arm 640. In the illustrated embodiment, the support arm 632 is formed to have a quadrilateral cross-section and is in the shape of a plate having a thickness in the direction in which the pair of support portions 630 are separated, that is, the up-down direction.

[0216] A plurality of support arms 632 can be provided. The plurality of support arms 632 can extend outward from each end of the support main body 631. In the illustrated embodiment, the support arm 632 includes: a first support arm 632a extending from the left end of the support main body 631; and a second support arm 632b extending from the right end of the support main body 631.

[0217] In the embodiment where a plurality of support portions 630 are provided, the support arms 632 provided on the pair of support portions 630 can be arranged to overlap each other.

[0218] A coupling groove 633 is formed inside the support arm 632.

[0219] The engaging groove 633 is a space for an engaging member (not shown) that engages a pair of support portions 630 to engage. The engaging groove 633 is formed to penetrate through the inside of the support arm 632 in its thickness direction, and in the illustrated embodiment, it is formed to penetrate in the vertical direction. The engaging member (not shown) can be penetratingly engaged in the engaging groove 633.

[0220] In one embodiment, a third mass member 623 can be engaged in the engaging groove 633. As Figure 12 and Figure 13 shown, the third mass member 623 can be formed in the shape of a threaded member and inserted or penetratingly engaged in the engaging groove 633. In the said embodiment, the third mass member 623 can serve to engage the support arms 632 provided on a pair of support portions 630 while canceling and reducing vibration or noise.

[0221] That is, the engaging member (not shown) engaged in the engaging groove 633 itself can be the third mass member 623.

[0222] A plurality of engaging grooves 633 can be provided. The plurality of engaging grooves 633 can be arranged at intervals from each other, and each can be engaged with an engaging member (not shown) or the third mass member 623. In the illustrated embodiment, a pair of engaging grooves 633 are provided and arranged at intervals along the extending direction of the noise generating portion 500.

[0223] Thereby, the plurality of support portions 630 are stably engaged, so that any wobbling or arbitrary detachment from the noise generating portion 500 can be prevented. In addition, the generated vibration or noise can be canceled and reduced by the third mass member 623 engaged in the engaging groove 633.

[0224] In embodiments where a plurality of third mass members 623 are provided, the masses of the plurality of third mass members 623 can be different from each other. Thereby, the vibration damping portion 600 can be configured to cancel and reduce vibrations or noises of various frequencies.

[0225] In embodiments where a plurality of support arms 632 are provided, the engaging groove 633 can be formed in each of the plurality of support arms 632. In the illustrated embodiment, a pair of engaging grooves 633 are respectively formed in the left first support arm 632a and the right second support arm 632b.

[0226] The pairs of engaging grooves 633 respectively formed in the first support arm 632a and the second support arm 632b can be arranged to be aligned and communicate with each other when the pair of support portions 630 are engaged with the noise generating portion 500. Thereby, the engaging member (not shown) or the third mass member 623 can penetrate the engaging grooves 633 respectively formed in the pair of support portions 630.

[0227] Referring to Figure 14 andFigure 15 , showing another modification of the vibration damping portion 600 of the present embodiment.

[0228] In this modification, one support portion 630 is provided, and one support portion 630 surrounds the noise generation portion 500. Thus, the extension length of the support body 631 can be longer than the extension length of the support body 631 in the above embodiment.

[0229] In the illustrated embodiment, the support body 631 can be formed to have a circular cross section. In the above embodiment, the support body 631 can be formed to have an inner circumference with a length corresponding to the circumferential direction length of the noise generation portion 500.

[0230] In addition, as one support portion 630 is provided and one support body 631 surrounds the outer circumference of the noise generation portion 500, the pair of support arms 632a, 632b can be arranged to bias in the same direction. In the illustrated embodiment, the first support arm 632a is arranged on the upper side of the left side with respect to the noise generation portion 500, and the second support arm 632b is arranged on the lower side of the left side.

[0231] In the above embodiment, the first support arm 632a and the second support arm 632b can be arranged to overlap each other. Thus, the engaging grooves 633 respectively formed in the first support arm 632a and the second support arm 632b are arranged to overlap and communicate with each other in the thickness direction, that is, the up and down direction in the illustrated embodiment.

[0232] The engaging groove 633 arranged to overlap with each other as the first support arm 632a and the second support arm 632b overlap can be engaged with a third mass member 623. In one embodiment, the third mass member 623 can be formed in the form of a coupling member such as a threaded member. In the above embodiment, the third mass member 623 can be configured to cancel and reduce vibration or noise while coupling the first support arm 632a and the second support arm 632b.

[0233] As described above, in embodiments where a plurality of third mass members 623 are provided, the masses of the plurality of third mass members 623 can be different from each other. Thus, the vibration damping portion 600 can be configured to cancel and reduce vibrations or noises of various frequencies.

[0234] Refer to Figure 16 , showing still another modification of the vibration damping portion 600 of the embodiment of the present invention.

[0235] In this modification, the vibration damping portion 600 further includes: a support portion 630 fixed to the noise generation portion 500; and a mass arm 640 coupled to the support portion 630. Therefore, in this modification, the mass portion 620 is indirectly in contact with the noise generation portion 500 through the support portion 630 and the mass arm 640.

[0236] The mass arm 640 is respectively combined with the support arm 632 and the mass part 620. The mass arm 640 receives the vibration transmitted to the rod part 610 and the support part 630 and transmits it to the mass part 620.

[0237] As shown in the following [Mathematical Formula 2], the mass arm 640 can change the resonance frequency f by affecting the spring constant k.

[0238] [Mathematical Formula 2]

[0239]

[0240] At this time, δ can be defined as the displacement of the mass part 620 combined with the mass arm 640, E can be defined as the elastic coefficient of the mass arm 640, I can be defined as the moment of inertia of the mass arm 640, P can be defined as the mass of the mass part 620, and L can be defined as the length of the mass arm 640.

[0241] That is, when the mass part 620 is combined with the rod part 610 through the support part 630 and the mass arm 640, not only the mass of the mass part 620 can be adjusted, but also various factors such as the length, elastic coefficient, and moment of inertia of the mass arm 640 can be adjusted. Thus, the natural frequency of the vibration damping part 600 can also be adjusted to various magnitudes, so that the vibration generated in the transformer 10 and the resulting noise can be more effectively reduced.

[0242] In this embodiment, as Figure 16 shown, the mass part 620 can be composed of a third mass member 623. The third mass member 623 can be set in any form that can be combined with the mass arm 640 and can affect the natural frequency of the vibration damping part 600. That is, in this embodiment, the mass part 620 can be any shape that can apply mass.

[0243] In this embodiment, the plural third mass members 623 combined with each mass arm 640 can also be formed to have different masses. As described above, the plural third mass members 623 can be configured to reduce vibrations of different frequencies or the resulting noise.

[0244] Referring to Figure 17 , a modified example of the vibration damping part 600 of this embodiment is shown.

[0245] In this modified example, the support part 630 is configured to include only the support main body 631 and the coupling groove 633 formed in the support main body 631, and there is no support arm 632. In addition, the mass part 620 is configured to include a fourth mass member 624 inserted and coupled to the coupling groove 633.

[0246] In this embodiment, the support body 631 is formed to surround the outer periphery of the noise generating portion 500. That is, the support body 631 has an annular cross-section and extends along the extending direction of the noise generating portion 500. A hollow portion that penetrates along its extending direction is formed inside the support body 631, and the noise generating portion 500 can be integrally coupled to the hollow portion through penetration.

[0247] A coupling groove 633 is formed inside the support body 631. The coupling groove 633 is formed by penetration or depression, and the fourth mass member 624 can be inserted and coupled to the coupling groove 633. A plurality of coupling grooves 633 are provided and can be respectively disposed at different positions of the support body 631.

[0248] The fourth mass member 624 can be formed in any shape capable of being inserted and coupled to the coupling groove 633. In the illustrated embodiment, the fourth mass member 624 is formed in the shape of a bolt, with the head portion located on the radially outer side and the body portion located on the radially inner side.

[0249] In one embodiment, the fourth mass member 624 can be detachably coupled to the coupling groove 633. In this embodiment, the mass or shape of the fourth mass member 624 can be configured in various ways, so that it can be coupled or separated from the support portion 630 according to the frequency of the generated vibration.

[0250] In one embodiment, a plurality of fourth mass members 624 can be provided. The plurality of fourth mass members 624 can be respectively coupled to the plurality of coupling grooves 633. At this time, the masses or shapes of the plurality of fourth mass members 624 can be formed differently. Thus, the plurality of fourth mass members 624 can be configured to cancel vibrations of different frequencies.

[0251] The vibration damping portion 600 of the present embodiment described above is directly or indirectly coupled to the noise generating portion 500 exposed to the outside of the transformer 10. The vibration damping portion 600 is configured to have a natural frequency corresponding to the frequency of the vibration transmitted to the noise generating portion 500, so as to cancel the generated vibration. Thus, the vibration or noise generated during the operation of the transformer 10 can be reduced.

[0252] On the other hand, when a plurality of vibration damping portions 600 are provided, the frequencies of the vibrations that each vibration damping portion 600 can cancel can be different from each other. Thus, vibrations of various frequencies are cancelled, so that the generated vibration or the noise generated thereby can be reduced.

[0253] 3. Description of the vibration damping portion 700 of another embodiment of the present invention and the transformer 10 including the vibration damping portion 700

[0254] Refer to Figures 18 to 23, which shows the components of the shock absorption part 700 of another embodiment of the present invention and the transformer 10 including the shock absorption part 700.

[0255] The difference of the transformer 10 in this embodiment is that it includes the shock absorption part 700 of another embodiment instead of the shock absorption part 600 of the above embodiment. Therefore, in the following description, the description of the common components is replaced by the description of the transformer 10 of the above embodiment.

[0256] However, as described above, the transformer 10 of the embodiment of the present invention may selectively include the shock absorption parts 600 and 700 of each embodiment. In one embodiment, the transformer 10 may include the shock absorption parts 600 and 700 of each embodiment at the same time.

[0257] In Figure 18 In the illustrated embodiment, the transformer 10 includes a housing 100, an oil supply part 300, a heat dissipation part 400, a noise generation part 500, and a shock absorption part 700. In addition, although not shown, the energization part 200 may be accommodated inside the housing 100 in the same manner as in the above embodiment.

[0258] The structures and functions of the housing 100, the energization part 200, the oil supply part 300, the heat dissipation part 400, and the noise generation part 500 in this embodiment are the same as those of the housing 100, the energization part 200, the oil supply part 300, the heat dissipation part 400, and the noise generation part 500 included in the transformer 10 of the above embodiment.

[0259] However, the difference of the transformer 10 in this embodiment is that the shock absorption part 700 also functions as a reinforcement part 130.

[0260] Hereinafter, with reference to Figures 19 to 22 , the shock absorption part 700 of another embodiment of the present invention will be described in detail.

[0261] The shock absorption part 700 is configured to be combined with the housing 100 and reduce the transmitted vibration or noise.

[0262] Specifically, the shock absorption part 700 is configured to be combined with the wall part 110 of the housing 100 and reduce the vibration or noise generated in the energization part 200 and transmitted to the housing 100.

[0263] The shock absorption part 700 is accommodated in the housing space 120 and combined with the inner surface of the wall part 110. A plurality of shock absorption parts 700 may be provided, and may be provided on any one or more of the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114 surrounding the housing space 120. In addition, the shock absorption part 700 may also be provided on the lower side wall not shown.

[0264] The damping portion 700 is not in direct contact with the energizing portion 200. That is, the damping portion 700 is configured to reduce vibrations or noises transmitted through the fluid, such as air or oil, in the housing space 120. In one embodiment, the damping portion 700 may utilize the resonance phenomenon to reduce the generated vibrations or noises. In the above embodiment, the damping portion 700 may be defined as a resonator.

[0265] A plurality of damping portions 700 may be provided. The plurality of damping portions 700 may be stacked and arranged in the height direction of the housing 100, and in the illustrated embodiment, may be stacked and arranged in the vertical direction. Adjacent damping portions 700 may be in contact with each other.

[0266] That is, in the above embodiment, the damping portion 700 may be provided in a modular manner and may be configured in various forms according to the frequency of the vibration to be canceled.

[0267] In the following description, the structure formed by stacking a plurality of damping portions 700 in the height direction is defined as a "group" of damping portions 700.

[0268] A plurality of groups of damping portions 700 respectively provided on the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114 may be provided.

[0269] That is, as Figure 19 and Figure 20 shown, a total of six groups of damping portions 700 may be arranged at intervals from each other in the width direction of the first wall 111, and in the illustrated embodiment, are arranged at intervals from each other in the left-right direction. In the illustrated embodiment, it is premised that the damping portion 700 is provided on the first wall 111, but it can be understood that the damping portion 700 is also provided on the second wall 112, the third wall 113, and the fourth wall 114. The number of groups of damping portions 700 provided on the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114 may be changed.

[0270] In addition, each damping portion 700 constituting a group may be formed to have natural frequencies of different sizes from each other. This can be adjusted according to the position of the partition member 720, the shape of the pipe member 730, and the volume of the resonance space 750 described later.

[0271] Therefore, a group of damping portions 700 may be configured to be able to cancel vibrations of different frequencies simultaneously.

[0272] In one embodiment, a plurality of vibration damping portions 700 may be detachably coupled to each other. Each group of vibration damping portions 700 coupled to the wall body portion 110 may also be detachably coupled to the wall body portion 110. Thus, the vibration damping portions 700 can actively correspond to the frequency of the vibration generated in the transformer 10 and be arranged in the transformer 10 in various forms.

[0273] The vibration damping portion 700 may be any shape capable of reducing the noise generated in the transformer 10 by utilizing the resonance phenomenon. In the illustrated embodiment, the vibration damping portion 700 is a three-dimensional graphic shape having a quadrilateral cross-section and a height in the front-rear direction.

[0274] With the above-described structure, a plurality of vibration damping portions 700 are stacked in the height direction of the cover body 100, and thus can also function as the reinforcing portion 130.

[0275] In Figures 20 to 22 the illustrated embodiment, the vibration damping portion 700 includes a frame 710, a partition wall member 720, a pipe member 730, a transmission space 740, and a resonance space 750.

[0276] The frame 710 forms the outer shape of the vibration damping portion 700. The frame 710 is coupled to the wall body portion 110 and can seal the transmission space 740 and the resonance space 750 formed therein.

[0277] In the illustrated embodiment, the frame 710 forms the front side, the upper side, the lower side, the left side, and the right side of the vibration damping portion 700. The rear side of the frame 710 is formed open, but is covered by the wall body portion 110.

[0278] A predetermined space is formed inside the frame 710. The space is divided into a plurality of spaces, namely, a transmission space 740 and a resonance space 750, by the partition wall member 720. The frame 710 is formed to at least partially surround the transmission space 740 and the resonance space 750.

[0279] In the illustrated embodiment, the frame 710 includes a first frame 711, a second frame 712, a third frame 713, and a fourth frame 714.

[0280] The first frame 711 forms one side of the frame 710. In the illustrated embodiment, it forms the front side. The first frame 711 is disposed opposite to the wall body portion 110. Thus, it can be said that the first frame 711 forms the side opposite to the wall body portion 110 among the respective parts of the frame 710.

[0281] The first frame 711 partially surrounds the resonance space 750. In the illustrated embodiment, the first frame 711 surrounds the front side of the resonance space 750.

[0282] The first frame 711 is connected to the second frame 712, the third frame 713, and the fourth frame 714 respectively.

[0283] The second frame 712 forms the other side of the frame 710 and forms the left side in the illustrated embodiment. The second frame 712 surrounds the transmission space 740 and the resonance space 750 on the other side, i.e., the left side. The second frame 712 is disposed facing the third frame 713 across the transmission space 740 and the resonance space 750.

[0284] The third frame 713 forms yet another side of the frame 710 and forms the right side in the illustrated embodiment. The third frame 713 surrounds the transmission space 740 and the resonance space 750 on the other side, i.e., the right side. The third frame 713 is disposed facing the second frame 712 across the transmission space 740 and the resonance space 750.

[0285] One end of the second frame 712 and the third frame 713 in the extending direction is connected to the first frame 711, and is connected to the first frame 711 on the front side in the illustrated embodiment. The other end of the second frame 712 and the third frame 713 in the extending direction is connected to the wall body portion 110, and is connected to the wall body portion 110 on the rear side in the illustrated embodiment.

[0286] The fourth frame 714 forms yet another side of the frame 710 and forms the upper side and the lower side in the illustrated embodiment. The fourth frame 714 surrounds the transmission space 740 and the resonance space 750 on the yet another side, i.e., the upper side and the lower side. The fourth frame 714 is composed of a pair facing each other across the transmission space 740 and the resonance space 750.

[0287] The space formed inside the frame 710 is separated into a transmission space 740 and a resonance space 750 by the partition member 720.

[0288] The partition member 720 is located in the space formed inside the frame 710. The partition member 720 is formed in a shape corresponding to the cross-section of the space formed inside the frame 710. The partition member 720 divides the space into a plurality of spaces in the direction toward the outside of the transformer 10, i.e., the front-rear direction.

[0289] The partition member 720 may be in a shape corresponding to the shape of the space formed inside the frame 710. The space is defined by being surrounded by the first frame 711, the second frame 712, the third frame 713, and the fourth frame 714. Therefore, it can be said that the partition member 720 can be formed corresponding to the shapes of the first frame 711, the second frame 712, the third frame 713, and the fourth frame 714.

[0290] In the illustrated embodiment, the partition wall member 720 is formed as a quadrilateral plate having a quadrilateral cross-section and a thickness in the front-rear direction. It can be understood that the shape of the partition wall member 720 corresponds to the shape of the first frame 711.

[0291] On each side of the partition wall member 720, on the side facing the first frame 711, the space on the front side in the illustrated embodiment can be defined as the resonance space 750. In addition, on each side of the partition wall member 720, on the other side facing the wall body portion 110, the space on the rear side in the illustrated embodiment can be defined as the transmission space 740.

[0292] The partition wall member 720 divides the space formed inside the frame 710 into a transmission space 740 and a resonance space 750, and the communication between the transmission space 740 and the resonance space 750 can be blocked. Therefore, the communication between the transmission space 740 and the resonance space 750 is achieved through the pipe member 730 coupled to the partition wall member 720.

[0293] The partition wall member 720 can be disposed at any position capable of dividing the space formed inside the frame 710 into a transmission space 740 and a resonance space 750. At this time, by adjusting the distance between the partition wall member 720 and the first frame 711 or the distance between the partition wall member 720 and the wall body portion 110, the volumes of the transmission space 740 and the resonance space 750 can be adjusted.

[0294] Through the above adjustment, the natural frequency of the vibration damping portion 700 can be adjusted, which will be described in detail later.

[0295] The pipe member 730 is coupled to the partition wall member 720.

[0296] The pipe member 730 connects the transmission space 740 and the resonance space 750 separated by the partition wall member 720. The pipe member 730 is coupled to the partition wall member 720. In one embodiment, the pipe member 730 can be penetrated and coupled to the partition wall member 720.

[0297] The pipe member 730 extends between the transmission space 740 and the resonance space 750, and in the illustrated embodiment, extends in the front-rear direction. One end of the pipe member 730 in the extending direction is located in the transmission space 740, and the other end is located in the resonance space 750.

[0298] The pipe member 730 can be of any shape capable of connecting the transmission space 740 and the resonance space 750. In the illustrated embodiment, the pipe member 730 includes a pipe hollow 731 formed through therein. That is, the pipe member 730 is formed as a circular pipe shape having an annular cross-section and extending in the front-rear direction.

[0299] The pipe member 730 can be combined with the partition member 720 at any position capable of communicating the transfer space 740 and the resonance space 750. In the illustrated embodiment, the pipe member 730 is configured to have the same center as the center of the cross-section of the partition member 720.

[0300] The pipe member 730 can extend a predetermined length. In addition, the pipe hollow 731 formed inside the pipe member 730 can be formed to have a predetermined diameter. As described later, the extension length of the pipe member 730 and the diameter of the pipe hollow 731 can be used as factors for determining the natural frequency of the vibration damping portion 700.

[0301] The transfer space 740 is the space in which the wall body portion 110 is disposed among the plurality of spaces separated by the partition member 720. In other words, the transfer space 740 can be defined as one of the plurality of separated spaces facing the wall body portion 110. The transfer space 740 first receives the vibration generated in the transformer 10 through the wall body portion 110.

[0302] The transfer space 740 is surrounded and defined by the wall body portion 110, the frame 710, and the partition member 720. In the illustrated embodiment, the front side of the transfer space 740 is surrounded by the partition member 720, the left side is surrounded by the second frame 712, the right side is surrounded by the third frame 713, and the upper and lower sides are surrounded by the fourth frame 714. In addition, the rear side of the transfer space 740 is surrounded by the wall body portion 110.

[0303] The transfer space 740 can be formed to have a predetermined volume. At this time, the volume of the transfer space 740 can be adjusted complementarily with the volume of the resonance space 750. As described above, the adjustment can be achieved according to the position of the partition member 720.

[0304] The pipe member 730 is partially accommodated in the transfer space 740. The transfer space 740 communicates with the resonance space 750 through the pipe hollow 731. The vibration or noise transferred to the transfer space 740 can be transferred to the resonance space 750 through the pipe hollow 731.

[0305] The transfer space 740 is disposed facing the resonance space 750 with the partition member 720 therebetween.

[0306] The resonance space 750 is a space that cancels the vibration or noise transferred through the pipe member 730. The vibration or noise transferred to the resonance space 750 can be canceled and reduced through the above resonance phenomenon. Thus, it is also possible to reduce the magnitude of the vibration or noise radiated to the outside of the cover 100 combined with the vibration damping portion 700.

[0307] The resonance space 750 is a space disposed closer to the first frame 711 among a plurality of spaces separated by the partition wall member 720. In other words, the resonance space 750 can be defined as a space among the plurality of separated spaces that faces the first frame 711. The resonance space 750 receives vibrations that have passed through the transfer space 740 and the tube hollow 731. The vibrations transferred to the resonance space 750 can be canceled out through the process described below.

[0308] The resonance space 750 is surrounded and defined by the frame 710 and the partition wall member 720. In the illustrated embodiment, the front side of the resonance space 750 is surrounded by the first frame 711, the left side is surrounded by the second frame 712, the right side is surrounded by the third frame 713, and the upper and lower sides are surrounded by the fourth frame 714. In addition, the rear side of the transfer space 740 is surrounded by the partition wall member 720.

[0309] The resonance space 750 can be formed to have a prescribed volume. At this time, the volume of the resonance space 750 can be adjusted complementarily to the volume of the transfer space 7240 according to the position of the partition wall member 720.

[0310] The tube member 730 is partially accommodated in the resonance space 750. The resonance space 750 communicates with the transfer space 740 through the tube hollow 731.

[0311] On the other hand, the natural frequency based on the length of the tube member 730, the diameter of the tube hollow 731, and the volume of the resonance space 750 can be derived by the following [Equation 3].

[0312] [Equation 3]

[0313]

[0314] In the [Equation 3], f is the natural frequency, v is the velocity of vibration or noise, A is the cross-sectional area of the tube hollow 731, V is the volume of the resonance space 750, and L is the length of the tube member 730.

[0315] Therefore, the natural frequency of the vibration damping unit 700 can be adjusted to various magnitudes according to the structure of the tube member 730 or the position of the partition wall member 720.

[0316] In one embodiment, the natural frequency of the vibration damping unit 700 can be determined to be a multiple of 120 Hz. This is because the vibrations generated in the transformer 10 generally have frequencies corresponding to multiples of 120 Hz.

[0317] Refer to Figure 23 , a modified example of the vibration damping unit 700 of the present embodiment is shown.

[0318] Refer to Figure 23In (a) thereof, a plurality of tube members 730 may be provided in the vibration damping portion 700. The plurality of tube members 730 may be arranged separately from each other and may be arranged at different positions of the partition wall member 720. Each of the plurality of tube members 730 may be configured to communicate the transmission space 740 and the resonance space 750.

[0319] In the illustrated embodiment, the plurality of tube bores 731 are formed to have the same diameter, i.e., the first diameter D1. Alternatively, the plurality of tube bores 731 may be formed to have different diameters from each other.

[0320] In the present embodiment, the natural frequency based on each tube member 730 may be derived by the following [Equation 4].

[0321] [Equation 4]

[0322]

[0323] In the [Equation 4], f is the natural frequency, v is the velocity of vibration or noise, A is the cross-sectional area of the tube bore 731, V is the volume of the resonance space 750, L is the length of the tube member 730. In addition, k is an identification number (index number) representing any one of the n tube members 730.

[0324] Therefore, in the illustrated embodiment, by adjusting the number of tube members 730 or the structure of each tube member 730, etc., the natural frequency of the vibration damping portion 700 can be adjusted diversely.

[0325] Referring to Figure 23 In (b) thereof, in the vibration damping portion 700, in addition to the tube members 730, resonance through holes 760 are also formed. The resonance through holes 760 are formed through the partition wall member 720 and may communicate the transmission space 740 and the resonance space 750.

[0326] A plurality of resonance through holes 760 may be formed. The plurality of resonance through holes 760 may be separated from the tube members 730 and formed at different positions of the partition wall member 720. The diameters of the plurality of resonance through holes 760 may be independent of each other. In other words, the diameters of the plurality of resonance through holes 760 may be formed to be the same or different from each other.

[0327] In the illustrated embodiment, the resonance through holes 760 are formed to have a second diameter D2, and the second diameter D2 is equal to or less than the first diameter D1 which is the diameter of the tube bore 731. Alternatively, the second diameter D2 may be formed to be equal to or greater than the first diameter D1.

[0328] In the present embodiment, the natural frequency based on the resonance through holes 760 may be derived by the following [Equation 5].

[0329] [Equation 5]

[0330]

[0331] In the above [Equation 5], f is the natural frequency, v is the velocity of vibration or noise, A is the cross-sectional area of the resonance through-hole 760, V is the volume of the resonance space 750, and L is the thickness of the partition member 720. Additionally, k is the identification number (index number) representing any one of the n resonance through-holes 760.

[0332] Therefore, in the illustrated embodiment, by adjusting the number or structure of the resonance through-holes 760, the structure of the resonance through-holes 760 and the pipe member 730, etc., the natural frequency of the vibration damping unit 700 can be adjusted in various ways.

[0333] The vibration damping unit 700 of the present embodiment described above is provided in the wall body portion 110, and can reduce the vibration or noise transmitted to the outside of the transformer 10. The vibration damping unit 700 is configured to have a natural frequency corresponding to the frequency of the vibration generated and transmitted in the transformer 10 by adjusting its structure, so as to be able to cancel out the generated vibration. Thereby, the vibration or noise generated during the operation of the transformer 10 can be reduced.

[0334] In addition, the vibration damping unit 700 is provided in a modular manner, so that its natural vibration frequency can be adjusted according to the frequency of the target vibration to be cancelled. Thereby, vibrations or noises of various frequencies can be reduced.

[0335] Although the embodiments of the present invention have been described, the idea of the present invention is not limited to the embodiments presented in this specification. Those of ordinary skill in the art who understand the idea of the present invention can easily propose another embodiment within the same scope of the idea by adding, changing, deleting, adding, etc. of the components, but this should also be considered to fall within the scope of the idea of the present invention.

[0336] Explanation of Reference Numerals

[0337] 10: Transformer 100: Housing

[0338] 110: Wall body portion 111: First wall

[0339] 112: Second wall 113: Third wall

[0340] 114: Fourth wall 115: Fifth wall

[0341] 120: Housing space 130: Reinforcing portion

[0342] 200: Energizing portion 210: Iron core member

[0343] 220: Winding member 300: Oil supply portion

[0344] 400: Heat dissipation part 500: Noise generation part

[0345] 510: Pipe member 520: Ladder member

[0346] 600: Vibration damping part 610: Rod part

[0347] 611: First rod 611a: First rod hollow

[0348] 612: Second rod 612a: Second rod hollow

[0349] 620: Mass part 621: First mass member

[0350] 621a: First mass hollow 622: Second mass member

[0351] 622a: Second mass hollow 623: Third mass member

[0352] 624: Fourth mass member 630: Support part

[0353] 631: Support body 632: Support arm

[0354] 632a: First support arm 632b: Second support arm

[0355] 633: Coupling through-hole 640: Mass arm

[0356] 700: Vibration damping part 710: Frame

[0357] 711: First frame 712: Second frame

[0358] 713: Third frame 714: Fourth frame

[0359] 720: Partition member 730: Pipe member

[0360] 731: Pipe hollow 740: Transmission space

[0361] 750: Resonance space 760: Resonance through-hole

[0362] D1: First diameter D2: Second diameter

Claims

1. A vibration damping part, wherein, Comprising: A frame, which is combined with an external wall body part; A partition member, which is located inside the frame and divides the space formed inside the frame into a plurality of spaces; A resonance space, which forms the space on the side opposite to the wall body part among the plurality of spaces separated by the partition member, and is configured to reduce the transmitted vibration or noise by resonance phenomenon; A transmission space, which forms the space on the other side of the wall body part among the plurality of spaces separated by the partition member; And A pipe member, which is penetrated and combined with the partition member and connects the resonance space and the transmission space.

2. The vibration damping part according to claim 1, wherein The frame comprises: A first frame, which is arranged to be biased towards the one side space and partially surrounds the resonance space; A second frame and a third frame, which are respectively connected to the first frame and are arranged to face each other across the resonance space; and A pair of fourth frames, which are respectively connected to the first frame to the third frame and are arranged to face each other across the resonance space.

3. The vibration damping part according to claim 2, wherein The transmission space is surrounded by the second frame to the fourth frame, the partition member and the wall body part, and receives the vibration transmitted to the wall body part, The resonance space is surrounded by the first frame to the fourth frame and the partition member, and receives the vibration through the pipe member.

4. The vibration damping part according to claim 1, wherein The pipe member extends between the resonance space and the transmission space, and one end portion in its extending direction is located in the resonance space, and the other end portion in its extending direction is located in the transmission space.

5. The vibration damping part according to claim 1, wherein A pipe hollow is formed inside the pipe member, and the pipe hollow is formed to penetrate along its extending direction and is respectively connected to the resonance space and the transmission space.

6. The vibration damping part according to claim 5, wherein A plurality of the pipe members are provided, and the plurality of pipe members are spaced apart from each other and are combined with the partition member at different positions, The cross-sectional areas of the pipe hollows respectively formed in the plurality of pipe members are configured to be the same.

7. The vibration damping part according to claim 5, wherein A plurality of the pipe members are provided, and the plurality of pipe members are spaced apart from each other and are combined with the partition member at different positions, The cross-sectional areas of the pipe hollows respectively formed in the plurality of pipe members are configured to be different from each other.

8. The vibration damping part according to claim 5, wherein It includes resonance through holes, and the resonance through holes are formed to penetrate through the partition member in a manner spaced apart from the pipe member and connect the resonance space and the transmission space.

9. The vibration damping part according to claim 8, wherein A plurality of the resonance through holes are formed, and the plurality of resonance through holes are spaced apart from each other, The diameters of the cross-sections of the plurality of resonance through holes are formed to be the same.

10. The vibration damping part according to claim 8, wherein A plurality of the resonance through holes are formed, and the plurality of resonance through holes are spaced apart from each other, The diameters of the cross-sections of a plurality of the resonance through-holes are formed to be different.

11. A transformer, wherein, Comprising: A cover body including a cover body space and a wall body portion surrounding the cover body space; A power supply portion accommodated in the cover body space and electrically connectable to an external power supply and a load; and A vibration damping portion coupled to the wall body portion and configured to receive vibration generated from the power supply portion and attenuate the vibration; The vibration damping portion includes: A frame coupled to the wall body portion surrounding the cover body space and having a space formed therein; A transfer space forming a part of the space of the frame and disposed to be biased toward the wall body portion; A resonance space forming the remaining part of the space of the frame and disposed opposite to the wall body portion; and A pipe member accommodated in the space of the frame and configured to communicate the transfer space and the resonance space.

12. The transformer according to claim 11, wherein the vibration damping portion includes a partition wall member that is located in the space of the frame so as to face the wall body portion with the transfer space therebetween and divides the space of the frame into the transfer space and the resonance space, and the pipe member is coupled to the partition wall member.

13. The transformer according to claim 12, wherein the pipe member extends between the transfer space and the resonance space, and one end portion in its extending direction is located in the transfer space and the other end portion is located in the resonance space, and a pipe hollow is formed to penetrate through the inside of the pipe member so as to communicate the transfer space and the resonance space.

14. The transformer according to claim 13, wherein a plurality of the pipe members are provided, and the plurality of the pipe members are configured to communicate the transfer space and the resonance space at different positions.

15. The transformer according to claim 12, wherein the vibration damping portion includes resonance through-holes that are formed to penetrate through the partition wall member while being spaced apart from the pipe member and communicate the transfer space and the resonance space.

16. The transformer according to claim 11, wherein a plurality of the vibration damping portions are provided, and the plurality of the vibration damping portions are stacked on each other in the height direction of the cover body.

17. The transformer according to claim 16, wherein the pipe members provided in the plurality of the vibration damping portions are formed to have different inner diameters.

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