Vibration reduction part and transformer comprising same

Abstract

The invention discloses a vibration reduction part and a transformer comprising the vibration reduction part. A vibration damping part of one aspect of the present invention may comprise: a rod part connected to the outside and extending in one direction; and a mass part combined with the rod part to reduce vibration transmitted to the rod part, the mass portion may include: a mass member formed to have a predetermined mass; and a mass hollow portion formed through the inside of the mass member, the rod portion being coupled to the mass hollow portion.

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 vibration or noise 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 convert the value of an alternating voltage or 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 are respectively wound around the iron core.

[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 the other 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 bonding state between the components of the transformer and the bonding state between the transformer and other devices may become unstable.

[0006] Therefore, techniques for reducing vibrations or noises generated during transformer operation 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 transformers of a preset size and weight. That is, in the case where 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 only supports transformers of a preset size and weight, and it is difficult to support transformers of other sizes and weights.

[0009] In addition, the anti-vibration support device disclosed in the existing literature is formed to support the transformer from the lower side. 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 existing literature is that it is buried in the ground, that is, underground. Therefore, in the case where the transformer is disposed separately from the ground, it is difficult to apply the anti-vibration support device of the existing literature.

[0012] In addition, the anti-vibration support device disclosed in the existing literature is also configured to support the transformer from the lower side. Therefore, the vibration generated during the operation of the transformer can be absorbed from the lower side, 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 used to solve the above-mentioned problems, and an object of the present invention is to provide a vibration damping part having a structure capable of reducing vibration generated during operation or noise generated therefrom, and a transformer including the vibration damping part.

[0017] Another object of the present invention is to provide a vibration damping part having a structure capable of reducing vibration or noise generated therefrom concentrated in a member during operation, and a transformer including the vibration damping part.

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

[0019] Still another object of the present invention is to provide a vibration damping part having a structure capable of being disposed in various structures and simply reducing vibration or noise generated therefrom, and a transformer including the vibration damping part.

[0020] Still another object of the present invention is to provide a vibration damping part having a structure that can be designed and changed into various forms, and a transformer including the vibration damping part.

[0021] Another object of the present invention is to provide a vibration damping part having a structure capable of reducing various vibrations or noises generated thereby, and a transformer including the vibration damping part.

[0022] The problems of the present invention are not limited to the problems mentioned above, and those skilled in the art can clearly understand other problems not mentioned through the following description.

[0023] Technical solutions for solving the problems

[0024] According to one aspect of the present invention, there is provided a vibration damping part including: a rod part connected to the outside and extending in one direction; and a mass part combined with the rod part to reduce vibrations transmitted to the rod part; the mass part includes: a mass member formed to have a predetermined mass; and a mass hollow part formed through the inside of the mass member, and the rod part is combined with the mass hollow part.

[0025] At this time, a vibration damping part can be provided, wherein the mass part includes: a first mass member disposed to be biased to one side; and a second mass member disposed adjacent to the first mass member and biased to the other side; the rod part includes: a first rod passing through a first mass hollow part of the first mass member; and a second rod passing through a second mass hollow part of the second mass member, combined with and communicating with the first rod.

[0026] In addition, a vibration damping part can be provided, wherein the mass member is formed in a plate shape extending in a radial direction with respect to the combined rod and having a thickness in the one direction.

[0027] In addition, according to one aspect of the present invention, there is provided a transformer including: a housing having a space formed therein; a power supply part accommodated in the space of the housing and electrically connected to an external power supply and a load; a noise generating part combined with the outside of the housing, receiving vibrations generated in the power supply part, and the length of the noise generating part extending in one direction is greater than the diameter of its cross section; and a vibration damping part combined with the noise generating part to reduce the transmitted vibrations; the vibration damping part includes a mass member combined with the noise generating part.

[0028] At this time, a transformer can be provided, wherein the mass member includes a mass hollow part having a cross section corresponding to the cross section of the noise generating part, the mass hollow part is formed through the inside of the mass member and combined with the noise generating part, and the mass member and the noise generating part are in contact and combined with each other.

[0029] In addition, a transformer can be provided, wherein the vibration damping portion includes a support portion that is respectively coupled to the noise generating portion and the mass member to receive the vibration and transfer it to the mass member.

[0030] At this time, a transformer can be provided, wherein the support portion includes: a support body that extends along the outer periphery of the noise generating portion and is in contact and coupled with the noise generating portion to surround the noise generating portion from the outside; and a support arm that extends outward from the support body and is coupled to the mass member.

[0031] In addition, a transformer can be provided, wherein the support arm includes: a first support arm that is continuous with one end portion in the extending direction of the support body; and a second support arm that is continuous with the other end portion in the extending direction of the support body.

[0032] At this time, a transformer can be provided, wherein a plurality of the support portions are provided, and the plurality of support portions are arranged to face each other with the noise generating portion therebetween and are coupled to each other. A plurality of the mass members are provided, and any one of the plurality of mass members is coupled to the first support arm, and another one of the plurality of mass members is coupled to the second support arm.

[0033] In addition, a transformer can be provided, wherein the support body extends to cover the outside of the noise generating portion along the outer peripheral direction of the noise generating portion, and the respective end portions in the extending direction of the support body are arranged adjacent to each other. The support arm includes: a first support arm that is continuous with one end portion in the extending direction of the support body; and a second support arm that is continuous with the other end portion in the extending direction of the support body and is arranged adjacent to the first support arm.

[0034] At this time, a transformer can be provided, wherein the support portion includes: a support body through which the noise generating portion is through-coupled; and a coupling groove formed in the support body and coupled to the mass member.

[0035] In addition, a transformer can be provided, wherein the support portion and the mass member are arranged to be spaced apart from each other. The vibration damping portion includes a mass arm that extends between the support portion and the mass member, and the respective end portions in the extending direction of the mass arm are respectively coupled to the support portion and the mass member to transfer the vibration transmitted to the support portion to the mass member.

[0036] At this time, a transformer can be provided, which includes an oil supply part combined with the outside of the housing, storing oil, and the noise generating part includes a piping member, and the piping member is respectively communicated with the oil supply part and the housing to form a flow path for the stored oil to flow into the space of the housing, and the vibration damping part at least partially surrounds the outer periphery of the piping member and is combined with the piping member.

[0037] In addition, a transformer can be provided, wherein the noise generating part includes a ladder-shaped member, the ladder-shaped member is combined with the outside of the housing and extends along the height direction of the housing, and the vibration damping part at least partially surrounds the outer periphery of the ladder-shaped member and is combined with the ladder-shaped member.

[0038] Advantages of the Invention

[0039] 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 the vibration generated during operation or the noise generated therefrom.

[0040] The transformer includes a housing. A housing space is formed inside the housing, and a power connection part that can be electrically connected to an external power source and load is accommodated in the housing space. When the transformer operates, the current applied from the power source to the power connection part can be transmitted to an external load through a voltage transformation process. At this time, the iron core member provided in the power connection part 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.

[0041] A vibration damping part is combined with the outside of the housing. The vibration damping part includes a mass part, and the mass part can vibrate at a specified natural frequency through vibration. When vibration occurs, the mass part also vibrates at a natural frequency capable of canceling out the generated vibration.

[0042] As is well known, sound is a kind of wavelength. Therefore, by adjusting the natural frequency of the vibration of the vibration damping part, the vibration generated in the transformer can be canceled out to reduce the intensity of the vibration.

[0043] Thus, the vibration or noise generated due to the operation of the transformer can be reduced.

[0044] 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 the vibration of the member where the vibration or the noise generated therefrom is concentrated during operation or the noise generated therefrom.

[0045] The transformer includes an oil supply part. The oil supply part is communicated with the housing and can supply insulating oil to the housing space. The oil supply part and the housing are fluidly connected to each other through a piping member. At this time, the piping member is combined with the housing and the oil supply part on the outside of the housing and the oil supply part respectively.

[0046] Therefore, the piping member is exposed to the outside of the cover body and the oil supply portion, and due to its shape, vibrations and the resulting noise are concentrated.

[0047] On the other hand, a ladder-shaped member is provided on the cover body. The ladder-shaped member functions as a passage for moving upward of the cover body for maintenance and other purposes. The ladder-shaped member also causes vibrations and the resulting noise to concentrate due to its shape.

[0048] A vibration damping portion is provided in the transformer. The vibration damping portion is disposed outside the cover body that forms the outer shape of the transformer. The vibration damping portion is combined with the piping member or the ladder-shaped member to cancel out the vibrations concentrated on the piping member or the ladder-shaped member.

[0049] Thus, it is possible to cancel out the vibrations concentrated on noise generation portions such as the piping member or the ladder-shaped member, thereby reducing the intensity of the vibrations and the intensity of the resulting noise.

[0050] 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 vibrations or the resulting noise.

[0051] The vibration damping portion is combined with the piping member or the ladder-shaped member disposed outside the cover body. The vibration damping portion is directly or indirectly combined with the piping member or the ladder-shaped member, and can cancel out the vibrations applied to the piping member or the ladder-shaped member.

[0052] That is, there is no need to change the structure of the cover body or the energization portion accommodated in the cover body in order to install the vibration damping portion. The vibration damping portion can reduce the generated vibrations and the resulting noise only by being combined with the piping member or the ladder-shaped member disposed outside the transformer.

[0053] Therefore, it is possible to simply reduce the generated vibrations or the resulting noise. Furthermore, after manufacturing and installing the transformer, the vibration damping portion can also be additionally installed, thereby improving the manufacturing and design convenience.

[0054] 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 be provided in various structures and simply reduce vibrations or the resulting noise.

[0055] As described above, the vibration damping portion can be provided in various components where vibrations or the resulting noise are concentrated, such as the piping member or the ladder-shaped member. The vibration damping portion is combined with the piping member or the ladder-shaped member and resonates to cancel out the transmitted vibrations.

[0056] That is, the vibration damping portion is combined with various components provided in the transformer, and can cancel out the generated vibrations. Thus, it is possible to reduce the vibrations transmitted to various components and the resulting noise.

[0057] In addition, according to the above configuration, the damping part of the embodiment of the present invention and the transformer including the damping part can be designed and changed into various forms.

[0058] In one embodiment, the damping part includes a mass member and can be directly combined with a piping member or a ladder-shaped member.

[0059] In another embodiment, the damping part may include a support part combined with a piping member or a ladder-shaped member and a mass arm combined with the support part. In the embodiment, the mass member is combined with the mass arm, and the damping part is formed in a cantilever form.

[0060] In still another embodiment, the damping part may include a support body surrounding a piping member or a ladder-shaped member and a coupling groove formed in the support body. In the embodiment, the mass member can be inserted into the coupling groove and combined with the piping member or the ladder-shaped member.

[0061] Therefore, the damping part can be designed and changed into various forms according to the installation environment. Thus, the design freedom and product applicability can be improved.

[0062] In addition, according to the above configuration, the damping part of the embodiment of the present invention and the transformer including the damping part can reduce various vibrations or the resulting noises.

[0063] In one embodiment, the mass members provided in each damping part can be formed with different masses. As the mass of the mass member changes, the natural frequency of the damping part changes, so that the frequency of the vibration that can be canceled can be adjusted.

[0064] In another embodiment, the lengths of the mass arms provided in the damping part can be formed differently. As the length of the mass arm changes, the natural frequency of the damping part changes, so that the frequency of the vibration that can be canceled can be adjusted.

[0065] In still another embodiment, a plurality of mass members can be formed with mutually different masses. Thus, a single damping part can cancel vibrations of various frequencies.

[0066] Therefore, by adjusting the mass or length of the configuration of the damping part, etc., the natural frequency can be easily adjusted. Thus, the frequencies of the vibrations that the damping part can reduce can become diverse.

[0067] 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a perspective view showing a transformer according to an embodiment of the present invention.

[0069] Figure 2 and Figure 3 is a perspective view showing the state where the heat dissipation part is removed in the transformer of Figure 1 .

[0070] Figure 4 is a perspective sectional view taken along line A-A of the energization part inside the transformer provided in Figure 1 .

[0071] Figure 5 is a perspective view showing Figure 2 a partially enlarged perspective view of part B of the transformer of

[0072] Figure 6 is a perspective view showing Figure 2 a partially enlarged perspective view of part C of the transformer of

[0073] Figure 7 is a perspective view showing Figure 2 a partially enlarged perspective view of part C of the transformer of

[0074] Figure 8 is a perspective view showing Figure 2 a partially enlarged perspective view of part E of the transformer of

[0075] Figure 9 is a perspective view showing the vibration damping part according to an embodiment of the present invention.

[0076] Figure 10 is a perspective exploded view showing Figure 9 the vibration damping part of

[0077] Figure 11 is a sectional view showing Figure 9 the vibration damping part of

[0078] Figure 12 is a perspective view showing Figure 9 a perspective view (a) and a partially enlarged perspective view (b) of another embodiment of the vibration damping part of

[0079] Figure 13 is a sectional view showing Figure 12 the vibration damping part of the embodiment of

[0080] Figure 14 is a perspective view showing Figure 9 another embodiment of the vibration damping part of

[0081] Figure 15 is a sectional view showing Figure 14 the vibration damping part of the embodiment of

[0082] Figure 16 is a conceptual diagram showing Figures 12 to 15 an application example of the vibration damping part of

[0083] Figure 17 Is a perspective view showing Figure 9 Another embodiment of the damping portion.

[0084] Figure 18 Is a perspective view of a transformer showing the damping portion to which another embodiment of the present invention is applied.

[0085] Figure 19 Is a perspective view showing the damping portion provided in Figure 18 A transformer.

[0086] Figure 20 Is a perspective view showing Figure 19 The F-F line sectional perspective view of the damping portion.

[0087] Figure 21 Is a perspective view showing Figure 19 The F-F line sectional view of the damping portion.

[0088] Figure 22 Is a perspective view showing Figure 19 The G-G line sectional view of the damping portion.

[0089] Figure 23 Is a perspective view showing Figure 19 The front view of another embodiment of the damping portion. Detailed implementation mode

[0090] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings so that those skilled in the art can easily implement them. The present invention can be implemented in various different forms and is not limited to the embodiments described herein. To clearly illustrate 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.

[0091] The terms and expressions 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 describe the present invention, in accordance with the meanings and concepts that conform to the technical idea of the present invention.

[0092] 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 may be various equivalent and modified examples that can be substituted for the corresponding configurations when the present invention is applied.

[0093] In the following description, in order to more clearly illustrate the features of the present invention, the description of some structural elements may be omitted.

[0094] 1. Definition of terms

[0095] 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 freely 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.

[0096] 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".

[0097] As used in the following description, the term "fluid" means any substance 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.

[0098] 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

[0099] 2. Description of the vibration damping part 600 of an embodiment of the present invention and the transformer 10 including the vibration damping part 600

[0100] With reference to Figures 1 to 17 , the respective components of the vibration damping part 600 of an embodiment of the present invention and the transformer 10 including the vibration damping part 600 are shown.

[0101] The vibration damping part 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 part 600 can be configured to reduce the generated noise by canceling the vibration generated in the components.

[0102] 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.

[0103] Therefore, the vibration damping part 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.

[0104] The damping unit 600 described below and the damping unit 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 unit 600 of the present embodiment and the damping unit 700 of another embodiment can be provided.

[0105] Thereby, it is possible to effectively cancel or reduce the vibration generated when the transformer 10 operates, and it is also possible to reduce the noise generated by the vibration.

[0106] 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 by the damping unit 600.

[0107] The transformer 10 is connected to the outside so as to be energizable. The transformer 10 can receive a current that is an object to be regulated in voltage. 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).

[0108] The operating principle of the transformer 10 is a well-known technology, so a detailed description thereof is omitted.

[0109] Hereinafter, with reference to the drawings, the configuration of the damping unit 600 of an embodiment of the present invention and the transformer 10 including the damping unit 600 will be described in detail.

[0110] In Figures 1 to 8 the illustrated embodiment, the transformer 10 includes a housing 100, a power supply unit 200, an oil supply unit 300, a heat dissipation unit 400, a noise generation unit 500, and a damping unit 600.

[0111] 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 to the outside again.

[0112] 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 that extends in the left-right direction with a longer length than the front-back direction and extends in the up-down direction.

[0113] In the illustrated embodiment, the housing 100 includes a wall body portion 110, a housing space 120, and a reinforcing portion 130.

[0114] The wall body portion 110 forms the outer periphery of the cover body 100. The wall body portion 110 surrounds from the outside the space formed inside the cover body 100, that is, the cover body space 120.

[0115] A plurality of wall body portions 110 may be provided. The plurality of wall body portions 110 may form the outer periphery of the cover body 100 at different positions. In the illustrated embodiment, the wall body portion 110 includes a pair of wall body portions spaced apart from each other in the vertical direction and facing each other, another pair of wall body portions spaced apart from each other in the left - right direction and facing each other, and one wall body portion located on the rear side. Each pair of wall body portions 110 is arranged to face each other with the cover body space 120 therebetween.

[0116] The wall body portion 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 portion 110 is in the shape of a quadrilateral plate formed by extending a prescribed thickness with a quadrilateral cross - section.

[0117] The plurality of wall body portions 110 may be formed at a prescribed angle with each other and be continuous. In the illustrated embodiment, the wall body portions 110 adjacent to each other among the plurality of wall body portions 110 are continuously perpendicular to each other. The joining manner of the plurality of wall body portions 110 may be changed according to the structure of the cover body 100.

[0118] The plurality of wall body portions 110 are arranged to surround the cover body space 120 at a plurality of positions. In the illustrated embodiment, the plurality of wall body portions 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.

[0119] In the illustrated embodiment, the wall body portion 110 includes a first wall 111, a second wall 112, a third wall 113, a fourth wall 114, and a fifth wall 115.

[0120] The first wall 111 is any one of the walls of the wall body portion 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.

[0121] The second wall 112 is another wall of the wall body portion 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.

[0122] 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 across the housing space 120.

[0123] 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 across the housing space 120.

[0124] 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.

[0125] 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.

[0126] 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 across the housing space 120.

[0127] 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.

[0128] 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.

[0129] The cover 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 cover space 120 and fill the cover space 120. The insulating oil is configured to insulate the energizing unit 200 accommodated in the cover space 120 from other components of the cover 100.

[0130] 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.

[0131] 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.

[0132] 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 cover space 120 from multiple 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.

[0133] 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 the shape of a column. Additionally, in the illustrated embodiment, the reinforcing part 130 is provided in the form of an I-Beam.

[0134] 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.

[0135] The energizing unit 200 is accommodated in the cover space 120. The cover space 120 is defined by being surrounded by a plurality of wall parts 110. Therefore, the energizing unit 200 accommodated in the cover space 120 is also surrounded by the plurality of wall parts 110 and does not arbitrarily expose to the outside.

[0136] 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 preventing safety accidents caused by the current flowing in the energizing unit 200.

[0137] The energizing unit 200 is energized from the outside. The 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.

[0138] 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, the electrical insulation state between the other components of the housing 100 and the energizing unit 200 can be maintained.

[0139] In the illustrated embodiment, the energizing unit 200 includes an iron core member 210 and a winding member 220.

[0140] 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.

[0141] 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.

[0142] 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 through the winding member 220. In one embodiment, the plate can be formed of wrought iron material.

[0143] The iron core member 210 can be formed in any shape capable of forming magnetic flux by winding a plurality of winding members 220.

[0144] The winding member 220 is wound around the iron core member 210. The current flowing through 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.

[0145] 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.

[0146] 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.

[0147] The winding member 220 is received in the iron core member 210. Specifically, the winding member 220 is received in the space surrounded by the portions formed to extend in the height direction.

[0148] A plurality of winding members 220 may be provided. The plurality of winding members 220 are arranged at intervals from each other and may be wound around the iron core member 210 at different positions.

[0149] In the illustrated embodiment, three winding members 220 are provided and arranged at intervals from each other. The plurality of winding members 220 do not contact each other.

[0150] Any one of the plurality of winding members 220 is energized from the outside and can receive the 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.

[0151] 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 by the induced current.

[0152] The winding member 220 may be formed in any shape that can be wound around the iron core member 210 and can generate an induced electromotive force. In the illustrated embodiment, the winding member 220 has a cylindrical shape with a circular cross-section having a hollow portion formed therein and extending in the vertical direction.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] The oil supply unit 300 may be in any shape that can store oil and can supply the stored oil to the cover space 120. In the illustrated embodiment, the oil supply unit 300 has a cylindrical shape with a circular cross-section and a length in the front-rear direction.

[0157] The pipe member 510 is coupled to the oil supply unit 300. The oil supply unit 300 can communicate with the housing space 120 through the pipe member 510. At this time, the pipe member 510 is coupled to the outer surface of the oil supply unit 300, and thus noise caused by vibration may be generated.

[0158] Therefore, the transformer 10 according to an embodiment of the present invention includes a vibration damping unit 600 coupled to the pipe member 510, which can reduce the noise generated in the pipe member 510. This will be described in detail later.

[0159] 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. Thus, the energization unit 200 and the oil accommodated in the housing space 120 are cooled, and overheating can be prevented.

[0160] 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 composed of a radiator.

[0161] 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.

[0162] The noise generation 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 generation unit 500 may be coupled to a structure exposed to the outside of the transformer 10, such as the housing 100 or the oil supply unit 300.

[0163] The noise generation unit 500 may include a structure in the shape of a pipe or a rod. That is, the noise generation 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 generation unit 500 can completely receive the vibration generated in the energization unit 200 and resonate to generate strong noise.

[0164] In the illustrated embodiment, the noise generation unit 500 includes a pipe member 510 and a ladder-shaped member 520.

[0165] 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 portion 300. The oil accommodated in the oil supply portion 300 can flow through the piping member 510 to the cover body space 120. As described above, the oil is filled between the energization portion 200 and the wall body portion 110 accommodated in the cover body space 120.

[0166] The piping member 510 is combined with the wall body portion 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 and is combined with the fifth wall 115 at a plurality of positions.

[0167] The piping member 510 is combined with the oil supply portion 300. In the illustrated embodiment, the piping member 510 is combined with the upper side of the outer periphery of the oil supply portion 300 and extends along the outer periphery of the oil supply portion 300. The piping member 510 combined with the oil supply portion 300 and the piping member 510 combined with the fifth wall 115 are combined and communicated.

[0168] A vibration damping portion 600 described later may be provided in the piping member 510. The vibration damping portion 600 is configured to reduce the resonance of the piping member 510 and the resulting noise.

[0169] The ladder - shaped member 520 provides a path for movement towards the upper part of the cover body 100 for maintenance and the like. The ladder - shaped member 520 is combined with the wall body portion 110 of the cover body 100, and in the illustrated embodiment, is combined with the fourth wall 114. The ladder - shaped member 520 is formed to extend in the height direction of the cover body 100, and in the illustrated embodiment, is formed to extend in the up - down direction.

[0170] The ladder - shaped 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 - shaped member 520 can be provided as a ladder extending in the up - down direction.

[0171] A vibration damping portion 600 described later may also be provided in the ladder - shaped member 520. The resonance generated in the ladder - shaped member 520 and the resulting noise can be reduced by the vibration damping portion 600.

[0172] Refer back to Figures 1 to 11 , the transformer 10 of the illustrated embodiment includes a vibration damping portion 600.

[0173] The vibration damping portion 600 of the present embodiment is configured to be combined with the noise generating portion 500 and reduce resonance and the resulting noise. Through the vibration damping portion 600, the vibration or noise generated in the piping member 510 or the ladder - shaped member 520 exposed to the outside can be reduced.

[0174] 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.

[0175] 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.

[0176] The vibration damping part 600 can be combined at 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.

[0177] In Figure 5 and Figure 6 In the illustrated embodiment, the vibration damping part 600 can be configured to be combined with the pipe 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 pipe member 510.

[0178] In Figure 7 and Figure 8 In the illustrated embodiment, the vibration damping part 600 can be configured to be combined with the pipe member 510 that is combined with the housing 100, and reduce the vibration and noise generated in the housing 100 and the pipe member 510.

[0179] Although not shown, the vibration damping part 600 can be configured to be further provided on the ladder-shaped member 520, and reduce the vibration and noise generated in the housing 100 and the ladder-shaped member 520.

[0180] 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.

[0181] Thus, the vibration and noise generated at each position are minimized, thereby improving the environment where the transformer 10 is located and preventing damage to the transformer 10 caused by vibration.

[0182] At this time, the vibration damping part 600 can be disposed 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.

[0183] Referring to Figures 9 to 11 , an example of the vibration damping part 600 according to an embodiment of the present invention is shown.

[0184] In the illustrated embodiment, the vibration damping portion 600 includes a rod portion 610 and a mass portion 620.

[0185] The rod portion 610 is a portion of the piping member 510 or the ladder-shaped 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 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 of the noise generating portion 500 and the like.

[0186] 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-shaped 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 in a pipe shape having a circular cross-section and extending in one direction, and a hollow portion is formed inside thereof.

[0187] 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.

[0188] In the illustrated embodiment, the first rod 611 and the second rod 612 extend in the vertical 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.

[0189] 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 hollow portions 621a and 622a formed inside the mass portion 620.

[0190] For this purpose, a first rod hollow portion 611a is formed inside the first rod 611 and extends through in its extending direction. In addition, a second rod hollow portion 612a is formed inside the second rod 612 and extends through in its extending direction. The first rod hollow portion 611a and the second rod hollow portion 612a are communicated with each other, and a closed space for oil to flow can be formed.

[0191] The mass portion 620 is configured to reduce the vibration or noise generated in the rod portion 610. That is, the mass portion 620 functions as a damper.

[0192] The mass portion 620 is combined with the rod portion 610. In one embodiment, the mass portion 620 may be configured to contact the rod portion 610, receive the generated vibration or noise, and cancel it out.

[0193] As the name implies, the mass portion 620 may be formed to have a specified mass. At this time, the mass of the mass portion 620 may be determined by the following [Formula 1] related to the natural frequency.

[0194] [Formula 1]

[0195]

[0196] In the above [Formula 1], f may be defined as the natural frequency, m may be defined as the mass of the mass portion 620, and k may 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.

[0197] In one embodiment, the natural frequency of the mass portion 620 may 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.

[0198] The mass portion 620 may 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 may be in the shape of a disk and may be formed as a plate in the shape of a ring with a hollow portion formed therethrough in the thickness direction inside.

[0199] The mass portion 620 may be composed of a plurality of parts. One of the plurality of parts may be combined with the first rod 611, and another of the plurality of parts may be combined with the second rod 612.

[0200] In the illustrated embodiment, the mass portion 620 includes: a first mass portion 621, located on the upper side and combined with the first rod 611; and a second mass portion 622, located on the lower side and combined with the second rod 612. The first mass portion 621 and the second mass portion 622 may be arranged to contact each other.

[0201] A first mass hollow portion 621a is formed 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 may pass through the first mass hollow portion 621a. The inner circumference of the first mass portion 621 may contact the outer circumference of the inserted first rod 611.

[0202] Inside the second mass portion 622, a second mass hollow portion 622a is formed to penetrate therethrough, and the one end portion of the second rod 612, i.e., the upper end portion, can penetrate through the second mass hollow portion 622a. The inner circumference of the second mass portion 622 can contact the outer circumference of the inserted second rod 612.

[0203] The first mass hollow portion 621a and the second mass hollow portion 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 portion 621a and the second mass hollow portion 622a are formed as a disk-shaped space having a circular cross section and a thickness in the vertical direction.

[0204] 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.

[0205] 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 hollow portions 621a, 622a.

[0206] Refer to Figures 12 to 16 , a modified example of the damping portion 600 of the present embodiment is shown.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] In the illustrated embodiment, the support main body 631 is formed in an arc shape with a central angle of about 180°. In the said 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.

[0213] In the said 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.

[0214] The support main body 631 is continuous with the support arm 632.

[0215] 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.

[0216] 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 vertical direction, which is the direction in which the pair of support portions 630 are separated.

[0217] 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 arms 632 include: 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.

[0218] 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.

[0219] A coupling groove 633 is formed inside the support arm 632.

[0220] 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 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.

[0221] 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.

[0222] That is, the engaging member (not shown) engaged in the engaging groove 633 itself can be the third mass member 623.

[0223] 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 in the extending direction of the noise generating portion 500.

[0224] Thereby, a 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.

[0225] In an embodiment in which 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.

[0226] In an embodiment in which 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.

[0227] 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 with each other and communicate when a 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 a pair of support portions 630.

[0228] Referring to Figure 14 andFigure 15 , showing another modification of the vibration damping portion 600 of the present embodiment.

[0229] In this modification, one support portion 630 is provided, and one support portion 630 surrounds the noise generating portion 500. Accordingly, the extending length of the support body 631 can be longer than the extending length of the support body 631 in the above embodiment.

[0230] 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 generating portion 500.

[0231] In addition, as one support portion 630 is provided and one support body 631 surrounds the outer circumference of the noise generating portion 500, the pair of support arms 632a, 632b can be arranged to deviate 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 generating portion 500, and the second support arm 632b is arranged on the lower side of the left side.

[0232] In the above embodiment, the first support arm 632a and the second support arm 632b can be arranged to overlap each other. Accordingly, 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.

[0233] The engaging groove 633 that overlaps 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.

[0234] As described above, in an embodiment in which 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. Accordingly, the vibration damping portion 600 can be configured to cancel and reduce vibrations or noises of various frequencies.

[0235] Refer to Figure 16 , showing still another modification of the vibration damping portion 600 of the embodiment of the present invention.

[0236] In this modification, the vibration 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 modification, the mass portion 620 is indirectly in contact with the noise generating portion 500 through the support portion 630 and the mass arm 640.

[0237] The mass arm 640 is respectively coupled to the support arm 632 and the mass portion 620. The mass arm 640 receives the vibrations transmitted to the rod portion 610 and the support portion 630 and transmits them to the mass portion 620.

[0238] As shown in the following [Formula 2], the mass arm 640 can change the resonance frequency f by affecting the spring constant k.

[0239] [Formula 2]

[0240]

[0241] At this time, δ can be defined as the displacement of the mass portion 620 coupled to 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 portion 620, and L can be defined as the length of the mass arm 640.

[0242] That is, in the case where the mass portion 620 is coupled to the rod portion 610 through the support portion 630 and the mass arm 640, not only the mass of the mass portion 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 portion 600 can also be adjusted to various magnitudes, thereby more effectively reducing the vibrations generated in the transformer 10 and the noise generated therefrom.

[0243] In the present embodiment, as Figure 16 shown, the mass portion 620 may be constituted by a third mass member 623. The third mass member 623 may be provided in any form that can be coupled to the mass arm 640 and can affect the natural frequency of the vibration damping portion 600. That is, in the present embodiment, the mass portion 620 may be any shape capable of applying mass.

[0244] In the present embodiment, a plurality of third mass members 623 coupled to the respective mass arms 640 may also be formed to have mutually different masses. As described above, the plurality of third mass members 623 may be configured to reduce vibrations of mutually different frequencies or the noise generated therefrom.

[0245] Referring to Figure 17 , a modified example of the vibration damping portion 600 of the present embodiment is shown.

[0246] In this modified example, the support portion 630 is configured to include only the support body 631 and the coupling groove 633 formed in the support body 631, and does not have the support arm 632. In addition, the mass portion 620 is configured to include a fourth mass member 624 inserted and coupled to the coupling groove 633.

[0247] In this embodiment, the support main body 631 is formed to surround the outer periphery of the noise generating portion 500. That is, the support main body 631 has an annular cross-section and extends along the extending direction of the noise generating portion 500. A hollow portion penetrating in its extending direction is formed inside the support main body 631, and the noise generating portion 500 can be penetratingly coupled to the hollow portion.

[0248] A coupling groove 633 is formed inside the support main body 631. The coupling groove 633 is formed to penetrate or be recessed, 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 main body 631.

[0249] 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 main body portion located on the radially inner side.

[0250] 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.

[0251] 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.

[0252] 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.

[0253] 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 canceled, so that the generated vibration or the noise generated thereby can be reduced.

[0254] 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

[0255] Refer to Figures 18 to 23, showing the components of the shock-absorbing part 700 of another embodiment of the present invention and the transformer 10 including the shock-absorbing part 700.

[0256] The difference of the transformer 10 in this embodiment is that it includes the shock-absorbing part 700 of another embodiment instead of the shock-absorbing 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 in the above embodiment.

[0257] However, as described above, the transformer 10 in the embodiment of the present invention may selectively include the shock-absorbing parts 600 and 700 of each embodiment. In one embodiment, the transformer 10 may include the shock-absorbing parts 600 and 700 of each embodiment at the same time.

[0258] 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-absorbing part 700. In addition, although not shown, an energization part 200 may be accommodated inside the housing 100 in the same manner as in the above embodiment.

[0259] 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.

[0260] However, the difference of the transformer 10 in this embodiment is that the shock-absorbing part 700 also functions as a strengthening part 130.

[0261] Hereinafter, with reference to Figures 19 to 22 , the shock-absorbing part 700 of another embodiment of the present invention will be described in detail.

[0262] The shock-absorbing part 700 is configured to be combined with the housing 100 and reduce the transmitted vibration or noise.

[0263] Specifically, the shock-absorbing 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.

[0264] The shock-absorbing part 700 is accommodated in the housing space 120 and combined with the inner surface of the wall part 110. A plurality of shock-absorbing 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-absorbing part 700 may also be provided on the lower side wall not shown.

[0265] The vibration damping part 700 is not in direct contact with the energizing part 200. That is, the vibration damping part 700 is configured to reduce vibrations or noises transmitted through the fluid in the housing space 120, such as air or oil. In one embodiment, the vibration damping part 700 can utilize the resonance phenomenon to reduce the generated vibrations or noises. In the said embodiment, the vibration damping part 700 can be defined as a resonator.

[0266] A plurality of vibration damping parts 700 can be provided. The plurality of vibration damping parts 700 can be stacked and arranged in the height direction of the housing 100, and in the illustrated embodiment, can be stacked and arranged in the up and down direction. The adjacent vibration damping parts 700 can be in contact with each other.

[0267] That is, in the said embodiment, the vibration damping part 700 can be provided in a modular manner and can be configured in various forms according to the frequency of the vibration to be canceled.

[0268] In the following description, the structure formed by stacking a plurality of vibration damping parts 700 in the height direction is defined as a "group" of vibration damping parts 700.

[0269] A plurality of groups of vibration damping parts 700 respectively provided on the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114 can be provided.

[0270] That is, as Figure 19 and Figure 20 shown, a total of six groups of vibration damping parts 700 can 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 and right direction. In the illustrated embodiment, it is premised that the vibration damping part 700 is provided on the first wall 111, but it can be understood that the vibration damping part 700 is also provided on the second wall 112, the third wall 113, and the fourth wall 114. The number of groups of the vibration damping parts 700 provided on the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114 can be changed.

[0271] In addition, each of the vibration damping parts 700 constituting a group can be formed to have natural frequencies of different sizes from each other. This can be adjusted according to the position of the partition wall member 720, the shape of the pipe member 730, and the volume of the resonance space 750, etc. to be described later.

[0272] Therefore, a group of vibration damping parts 700 can be configured to be able to cancel vibrations of different frequencies simultaneously.

[0273] 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 can be arranged in various forms in the transformer 10.

[0274] The vibration damping portion 700 may be of 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.

[0275] 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.

[0276] 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.

[0277] 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.

[0278] 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 to be open, but is covered by the wall body portion 110.

[0279] 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.

[0280] 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.

[0281] 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 arranged 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.

[0282] 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.

[0283] The first frame 711 is continuous with the second frame 712, the third frame 713, and the fourth frame 714 respectively.

[0284] The second frame 712 forms the other side of the frame 710, which 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.

[0285] The third frame 713 forms yet another side of the frame 710, which 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.

[0286] One end of the second frame 712 and the third frame 713 in the extending direction is continuous with the first frame 711, which is continuous with 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 continuous with the wall body portion 110, which is continuous with the wall body portion 110 on the rear side in the illustrated embodiment.

[0287] The fourth frame 714 forms yet another side of the frame 710, which 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 other side, i.e., the upper side and the lower side. The fourth frame 714 constitutes a pair facing each other across the transmission space 740 and the resonance space 750.

[0288] The space formed inside the frame 710 is separated into a transmission space 740 and a resonance space 750 by the partition member 720.

[0289] 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.

[0290] 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.

[0291] 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.

[0292] 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 a 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 a transmission space 740.

[0293] 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 by means of a pipe member 730 coupled to the partition wall member 720.

[0294] 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.

[0295] Through the above adjustment, the natural frequency of the vibration damping portion 700 can be adjusted, which will be described in detail later.

[0296] A pipe member 730 is coupled to the partition wall member 720.

[0297] 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 penetratingly coupled to the partition wall member 720.

[0298] 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 portion in the extending direction of the pipe member 730 is located in the transmission space 740, and the other end portion is located in the resonance space 750.

[0299] 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 portion 731 formed therethrough inside. 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.

[0300] 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.

[0301] The pipe member 730 can extend a predetermined length. In addition, the pipe hollow portion 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 portion 731 can be used as factors for determining the natural frequency of the vibration damping portion 700.

[0302] The transfer space 740 is a space disposed in the wall body portion 110 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 initially receives the vibration generated in the transformer 10 through the wall body portion 110.

[0303] 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.

[0304] 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.

[0305] 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 portion 731. The vibration or noise transferred to the transfer space 740 can be transferred to the resonance space 750 through the pipe hollow portion 731.

[0306] The transfer space 740 is disposed facing the resonance space 750 with the partition member 720 therebetween.

[0307] The resonance space 750 is a space for canceling 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, the magnitude of the vibration or noise radiated to the outside of the cover 100 combined with the vibration damping portion 700 can also be reduced.

[0308] The resonance space 750 is disposed to bias towards 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 separated plurality of spaces towards the first frame 711. The resonance space 750 receives vibrations that have passed through the transmission space 740 and the tube hollow portion 731. The vibrations transmitted to the resonance space 750 can be cancelled through the process described below.

[0309] 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 transmission space 740 is surrounded by the partition wall member 720.

[0310] 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 transmission space 7240 according to the position of the partition wall member 720.

[0311] The tube member 730 is partially accommodated in the resonance space 750. The resonance space 750 communicates with the transmission space 740 through the tube hollow portion 731.

[0312] On the other hand, the natural frequency based on the length of the tube member 730, the diameter of the tube hollow portion 731, and the volume of the resonance space 750 can be derived by the following [Formula 3].

[0313] [Formula 3]

[0314]

[0315] In the said [Formula 3], f is the natural frequency, v is the velocity of vibration or noise, A is the cross-sectional area of the tube hollow portion 731, V is the volume of the resonance space 750, and L is the length of the tube member 730.

[0316] Therefore, the natural frequency of the vibration damping portion 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.

[0317] In one embodiment, the natural frequency of the vibration damping portion 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.

[0318] Refer to Figure 23 , a modified example of the vibration damping portion 700 of the present embodiment is shown.

[0319] Refer to Figure 23In (a) of this, in the vibration damping portion 700, a plurality of pipe members 730 may be provided. The plurality of pipe members 730 may be arranged separately from each other to be disposed at different positions of the partition wall member 720. Each of the plurality of pipe members 730 may be configured to communicate the transfer space 740 and the resonance space 750.

[0320] In the illustrated embodiment, the plurality of pipe hollow portions 731 are formed to have the same diameter, that is, the first diameter D1. Alternatively, the plurality of pipe hollow portions 731 may be formed to have different diameters from each other.

[0321] In this embodiment, the natural frequency based on each pipe member 730 can be derived by the following [Formula 4].

[0322] [Formula 4]

[0323]

[0324] In the said [Formula 4], f is the natural frequency, v is the velocity of vibration or noise, A is the cross-sectional area of the pipe hollow portion 731, V is the volume of the resonance space 750, and L is the length of the pipe member 730. In addition, k is an identification number (index number) indicating any one of the n pipe members 730.

[0325] Therefore, in the illustrated embodiment, by adjusting the number of the pipe members 730 or the structure of each pipe member 730, etc., the natural frequency of the vibration damping portion 700 can be adjusted diversely.

[0326] Referring to Figure 23 In (b) of this, in the vibration damping portion 700, in addition to the pipe members 730, resonance through-holes 760 are also formed. The resonance through-holes 760 are formed through the partition wall member 720 and can communicate the transfer space 740 and the resonance space 750.

[0327] A plurality of resonance through-holes 760 may be formed. The plurality of resonance through-holes 760 may be separated from the pipe members 730 to be 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.

[0328] 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 pipe hollow portion 731. Alternatively, the second diameter D2 may be formed to be equal to or greater than the first diameter D1.

[0329] In this embodiment, the natural frequency based on the resonance through-holes 760 can be derived by the following [Formula 5].

[0330] [Formula 5]

[0331]

[0332] In the above [Formula 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.

[0333] 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.

[0334] 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, thereby being able to cancel out the generated vibration. Thus, the vibration or noise generated as the transformer 10 operates can be reduced.

[0335] 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 canceled. Thus, vibrations or noises of various frequencies can be reduced.

[0336] Although 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.

[0337] Description of Reference Numerals

[0338] 10: Transformer 100: Cover

[0339] 110: Wall body portion 111: First wall

[0340] 112: Second wall 113: Third wall

[0341] 114: Fourth wall 115: Fifth wall

[0342] 120: Cover space 130: Reinforcing portion

[0343] 200: Energizing portion 210: Iron core member

[0344] 220: Winding member 300: Oil supply portion

[0345] 400: Heat dissipation part 500: Noise generation part

[0346] 510: Pipe member 520: Ladder member

[0347] 600: Vibration damping part 610: Rod part

[0348] 611: First rod 611a: First rod hollow part

[0349] 612: Second rod 612a: Second rod hollow part

[0350] 620: Mass part 621: First mass member

[0351] 621a: First mass hollow part 622: Second mass member

[0352] 622a: Second mass hollow part 623: Third mass member

[0353] 624: Fourth mass member 630: Support part

[0354] 631: Support body 632: Support arm

[0355] 632a: First support arm 632b: Second support arm

[0356] 633: Coupling through hole 640: Mass arm

[0357] 700: Vibration damping part 710: Frame

[0358] 711: First frame 712: Second frame

[0359] 713: Third frame 714: Fourth frame

[0360] 720: Partition member 730: Pipe member

[0361] 731: Pipe hollow part 740: Transmission space

[0362] 750: Resonance space 760: Resonance through hole

[0363] D1: First diameter D2: Second diameter

Claims

1. A vibration damping part, wherein, Comprising: A rod portion, connected to the outside and extending in one direction; And A mass portion, combined with the rod portion to reduce the vibration transmitted to the rod portion; The mass portion includes: A mass member, formed to have a prescribed mass; And A mass hollow portion, formed through the inside of the mass member, and the rod portion is combined with the mass hollow portion.

2. The vibration damping portion according to claim 1, wherein The mass portion includes: A first mass member, disposed to be biased to one side; and A second mass member, disposed adjacent to the first mass member and biased to the other side; The rod portion includes: A first rod, passing through a first mass hollow portion of the first mass member; and A second rod, passing through a second mass hollow portion of the second mass member, combined with and communicating with the first rod.

3. The vibration damping portion according to claim 1, wherein The mass member is formed as a plate shape extending in a radial direction with respect to the combined rod and having a thickness in the one direction.

4. A transformer, wherein, Comprising: A housing, having a space formed inside; A power supply portion, accommodated in the space of the housing, and electrically connected to an external power supply and a load; A noise generating portion, combined with the outside of the housing, receiving the vibration generated in the power supply portion, and the length of the noise generating portion extending in one direction is greater than the diameter of its cross section; And A vibration damping portion, combined with the noise generating portion, reducing the transmitted vibration; The vibration damping portion includes a mass member combined with the noise generating portion.

5. The transformer according to claim 4, wherein The mass member includes a mass hollow portion, the mass hollow portion having a cross section corresponding to the cross section of the noise generating portion, and the mass hollow portion is formed through the inside of the mass member and combined with the noise generating portion; The mass member and the noise generating portion are in contact and combined with each other.

6. The transformer according to claim 4, wherein The vibration damping portion includes a support portion, and the support portion is combined with the noise generating portion and the mass member respectively to receive the vibration and transmit it to the mass member.

7. The transformer according to claim 6, wherein The support portion includes: A support main body, extending along the outer periphery of the noise generating portion and in contact and combined with the noise generating portion to surround the noise generating portion from the outside; and A support arm, extending outward from the support main body and combined with the mass member.

8. The transformer according to claim 7, wherein The support arm includes: A first support arm, continuous with one end portion in the extending direction of the support main body; and A second support arm, continuous with the other end portion in the extending direction of the support main body.

9. The transformer according to claim 8, wherein A plurality of the support portions are provided, and the plurality of support portions are disposed facing each other with the noise generating portion therebetween and combined with each other; A plurality of the mass members are provided, and any one of the plurality of mass members is combined with the first support arm, and another one of the plurality of mass members is combined with the second support arm.

10. The transformer according to claim 7, wherein The support body extends to cover the outside of the noise generating portion along the outer peripheral direction of the noise generating portion, and respective end portions in the extending direction of the support body are arranged adjacent to each other; The support arm includes: A first support arm continuous with one end portion in the extending direction of the support body; And A second support arm continuous with the other end portion in the extending direction of the support body and arranged adjacent to the first support arm.

11. The transformer according to claim 6, wherein, The support portion includes: A support body, the noise generating portion is penetrated and coupled to the support body; and A coupling groove formed in the support body and coupled to the mass member.

12. The transformer according to claim 6, wherein, The support portion and the mass member are arranged spaced apart from each other; The vibration damping portion includes a mass arm that extends between the support portion and the mass member, and respective end portions in the extending direction of the mass arm are respectively coupled to the support portion and the mass member, and transmit the vibration transmitted to the support portion to the mass member.

13. The transformer according to claim 4, wherein, A fuel supply portion is included, the fuel supply portion is coupled to the outside of the cover body and stores oil; The noise generating portion includes a piping member that is respectively communicated with the fuel supply portion and the cover body to form a flow path for the stored oil to flow into the space of the cover body; The vibration damping portion at least partially surrounds the outer periphery of the piping member and is coupled to the piping member.

14. The transformer according to claim 4, wherein, The noise generating portion includes a ladder-shaped member that is coupled to the outside of the cover body and extends in the height direction of the cover body; The vibration damping portion at least partially surrounds the outer periphery of the ladder-shaped member and is coupled to the ladder-shaped member.

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