Transformer

Abstract

The utility model discloses a transformer, which comprises a first clamping piece and a second clamping piece, the second clamping piece and the first clamping piece are arranged at an interval; the coil assembly is arranged between the first clamping piece and the second clamping piece, the coil assembly is provided with a first air channel extending to the two ends of the coil assembly, at least one cushion block is arranged between the first clamping piece and the coil assembly, and at least one cushion block is also arranged between the second clamping piece and the coil assembly; the side wall of the cushion block is provided with a second air channel, and the second air channel is communicated with the first air channel. According to the transformer, the second air channel which can be communicated with the first air channel on the coil assembly is arranged on the cushion block, so that the cushion block cannot shield the air channel of the coil assembly when supporting the coil assembly, air circulation in the first air channel can be facilitated, and the transformer has better cooling and heat dissipation effects.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components include a coil assembly and a pad for supporting the coil assembly. In order to facilitate the heat dissipation of the transformer, an air duct for cooling and dissipating heat is usually provided on the coil assembly. However, when supporting the coil assembly, the pad abuts against the end of the coil assembly, thereby easily blocking part of the air duct, resulting in a reduction in the heat dissipation capacity of the air duct, which in turn easily affects the normal operation of the transformer. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a transformer with good cooling and heat dissipation effect.

[0004] According to the transformer of the embodiment of the utility model, it includes: a first clamp; a second clamp arranged at an interval with the first clamp; a coil assembly arranged between the first clamp and the second clamp, the coil assembly is provided with a first air duct extending to both ends of the coil assembly, at least one pad is provided between the first clamp and the coil assembly, and at least one pad is also provided between the second clamp and the coil assembly; wherein the pad is provided with a second air duct, and the second air duct is connected to the first air duct.

[0005] The transformer according to the embodiment of the utility model has at least the following beneficial effects:

[0006] By arranging a second air duct on the cushion block that can be connected to the first air duct on the coil assembly, the cushion block will not block the first air duct of the coil assembly when supporting the coil assembly, thereby facilitating air circulation in the first air duct and enabling the transformer to have a better cooling and heat dissipation effect.

[0007] According to some embodiments of the present invention, the coil assembly includes an iron core, a low-voltage coil and a high-voltage coil, the low-voltage coil is located between the high-voltage coil and the iron core, and the first air duct is opened in the low-voltage coil.

[0008] According to some embodiments of the utility model, the cushion block has a first abutting portion and a second abutting portion, the first abutting portion abuts against the low-voltage coil, the second abutting portion abuts against the high-voltage coil, and the second air duct is opened in the first abutting portion.

[0009] According to some embodiments of the present invention, the second air duct has a first connecting hole and a second connecting hole extending to the side wall of the cushion block, and the first connecting hole is connected to the first air duct; the first clamp is provided with a first fan, at least one of the cushion blocks is located on one side of the first fan, the first fan has a first air outlet, and the second connecting hole of the cushion block located on one side of the first fan faces the first air outlet.

[0010] According to some embodiments of the utility model, at least two of the pads are arranged between the first clamp and the coil assembly, the first fan is installed between two adjacent pads, and the second connecting holes of the pads located on both sides of the first fan are both facing the first air outlet.

[0011] According to some embodiments of the present invention, the second air duct has two second connecting holes, and the two second connecting holes are correspondingly arranged on two opposite sides of the cushion block, and the axis of the second connecting hole is arranged at an obtuse angle to the axis of the first connecting hole.

[0012] According to some embodiments of the utility model, the number of the coil assemblies is at least two groups, all of the coil assemblies are arranged at intervals in the left-right direction, a second fan is arranged between every two adjacent coil assemblies, the second fan is installed on the first clamp or the second clamp, the second fan has a second air outlet, and one of the second connecting holes of the cushion block located on the left and / or right side of the second fan faces the second air outlet.

[0013] According to some embodiments of the utility model, the second fan is provided with a first air guide portion and a second air guide portion located at the second air outlet, the first air guide portion being inclined toward the left side of the second fan along a direction away from the second air outlet, and the second air guide portion being arranged on the right side of the first air guide portion and being inclined toward the right side of the second fan along a direction away from the second air outlet.

[0014] According to some embodiments of the present invention, the first air guide portion includes at least two first air guide plates arranged at the second air outlet, the first air guide plates are inclined toward the left side of the second fan along the direction away from the second air outlet, and two adjacent first air guide plates are arranged at intervals in the left-right direction to form a first air guide channel; the second air guide portion includes at least two second air guide plates arranged at the second air outlet, the second air guide plates are inclined toward the right side of the second fan along the direction away from the second air outlet, and two adjacent second air guide plates are arranged at intervals in the left-right direction to form a second air guide channel.

[0015] According to some embodiments of the present invention, the outer peripheral wall of the cushion block is provided with at least two convex strips spaced apart in the up-down direction.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a transformer according to an embodiment of the present utility model;

[0019] Figure 2 A schematic side view of a transformer according to an embodiment of the utility model;

[0020] Figure 3 for Figure 2 A schematic cross-sectional view of a transformer is shown;

[0021] Figure 4 for Figure 3 A partial enlarged schematic diagram of the output is shown;

[0022] Figure 5 A schematic diagram of a partial structure of a transformer according to an embodiment of the utility model;

[0023] Figure 6 It is a cross-sectional schematic diagram of a spacer block and a second clamp of a transformer according to an embodiment of the utility model;

[0024] Figure 7 It is a cross-sectional schematic diagram of a spacer block and a first clamp of a transformer according to an embodiment of the utility model;

[0025] Figure 8 A schematic diagram of a cushion block according to an embodiment of the utility model;

[0026] Fig. 9 A schematic cross-sectional view of a cushion block according to an embodiment of the utility model;

[0027] Fig.10 Another cross-sectional schematic diagram of a cushion block according to an embodiment of the utility model;

[0028] Fig.11 A schematic diagram of a fan according to an embodiment of the utility model;

[0029] Fig.12 Another schematic diagram of a fan according to an embodiment of the utility model;

[0030] Reference numerals:

[0031] A first clamp 100 and a positioning column 110;

[0032] A second clamp 200, a fastener 210, and an elastic member 220;

[0033] Coil assembly 300, iron core 310, low voltage coil 320, first air duct 321, high voltage coil 330;

[0034] The cushion block 400, the first abutting portion 401, the second abutting portion 402, the second air duct 410, the first connecting hole 411, the second connecting hole 412, the convex strip 420, the mounting groove 430, and the rubber pad 440;

[0035] A first fan 500 and a first air outlet 510;

[0036] The second fan 600 , the first air guide plate 610 , the first air guide channel 611 , the second air guide plate 620 , and the second air guide channel 621 . DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Reference Figures 1 to 10One embodiment of the utility model provides a transformer, which includes a first clamp 100, a second clamp 200 and a coil assembly 300. The second clamp 200 is arranged at an interval with the first clamp 100. The coil assembly 300 is arranged between the first clamp 100 and the second clamp 200, and the coil assembly 300 is provided with a first air duct 321 extending to both ends of the coil assembly 300, four cushion blocks 400 are arranged between the first clamp 100 and the coil assembly 300, and four cushion blocks 400 are also arranged between the second clamp 200 and the coil assembly 300. Among them, the cushion block 400 is provided with a second air duct 410, and the second air duct 410 is connected with the first air duct 321.

[0042] In the above structure, by setting a second air duct 410 on the cushion block 400 that can be connected with the first air duct 321 on the coil assembly 300, when the cushion block 400 supports the coil assembly 300, the second air duct 410 of the cushion block 400 can be aligned with the first air duct 321 on the coil assembly 300, so that the cushion block 400 will not block the air duct of the coil assembly 300, thereby facilitating air circulation in the first air duct, so that the transformer has a better cooling and heat dissipation effect, avoiding accelerated aging of materials near the first air duct 321 due to excessively high temperature, and thus helping to extend the service life of the transformer.

[0043] It is understandable that the four spacers 400 are provided between the first clamp 100 and the coil assembly 300, which is only for Figures 1 to 10 As an exemplary illustration, the number of the spacers 400 between the first clamp 100 and the coil assembly 300 may be one, two, three, five or more than four, and the present invention does not specifically limit this. Similarly, four spacers 400 are also provided between the second clamp 200 and the coil assembly 300, which is also only for Figures 1 to 10 As an exemplary illustration, the number of pads 400 between the second clamp 200 and the coil assembly 300 may be one, two, three, five or more than four, and the present invention does not make any specific limitation on this. In addition, in the embodiment of the present invention, the number of pads 400 between the first clamp 100 and the coil assembly 300 and the number of pads 400 between the second clamp 200 and the coil assembly 300 are the same, which can make the support of the coil assembly 300 more balanced and stable, but it does not mean that the number of pads 400 between the first clamp 100 and the coil assembly 300 and the number of pads 400 between the second clamp 200 and the coil assembly 300 must be the same. The number of pads 400 at both ends of the coil assembly 300 may be the same or different, and the present invention does not make any specific limitation on this.

[0044] It is understandable that the number of the first air ducts 321 opened on the coil assembly 300 can be one, two or more, and the present invention does not make any specific limitation on this. It only needs to ensure that the second air duct 410 of the cushion block 400 is connected to one of the first air ducts 321 .

[0045] Reference Figures 1 to 10 In some embodiments, the coil assembly 300 includes an iron core 310 , a low-voltage coil 320 , and a high-voltage coil 330 . The low-voltage coil 320 is located between the high-voltage coil 330 and the iron core 310 , and an air duct is opened in the low-voltage coil 320 .

[0046] In the above structure, when the transformer is in use, the high-voltage coil 330 can generally be exposed to the external environment, with a large contact area with the external air and a good heat dissipation effect. The low-voltage coil 320 is located between the high-voltage coil 330 and the iron core 310, and has a poor heat dissipation capacity. Therefore, the first air duct 321 can be opened in the low-voltage coil 320, without opening the first air duct 321 between the low-voltage coil 320 and the high-voltage coil 330 or on the high-voltage coil 330. This can ensure the heat dissipation effect while reducing the production cycle of the coil assembly 300 and improving the production and processing efficiency of the transformer.

[0047] Reference Figures 1 to 10 In some embodiments, the cushion block 400 has a first abutting portion 401 and a second abutting portion 402 , the first abutting portion 401 abuts against the low-voltage coil 320 , the second abutting portion 402 abuts against the high-voltage coil 330 , and the second air duct 410 is opened in the first abutting portion 401 .

[0048] In the above structure, the cushion block 400 has a first abutment portion 401 and a second abutment portion 402, thereby, the cushion block 400 can abut against the pressure coil through the first abutment portion 401, and abut against the high-voltage coil 330 through the second abutment portion 402. The second air duct 410 is opened in the first abutment portion 401, thereby facilitating the alignment and connection of the second air duct 410 with the first air duct 321 in the low-voltage coil 320.

[0049] Reference Figures 1 to 10 In some embodiments, a rubber pad 440 is provided between the first abutting portion 401 and the low-voltage coil 320, and a rubber pad 440 is also provided between the second abutting portion 402 and the high-voltage coil 330, thereby protecting the low-voltage coil 320 and the high-voltage coil 330, and making the pad 400 more firmly support the coil assembly 300. Specifically, the rubber pad 440 can be a silicone pad 440 or a rubber pad 440 or other structures, which is not specifically limited in the present invention.

[0050] Reference Figures 1 to 10In some embodiments, the second air duct 410 has a first connecting hole 411 and a second connecting hole 412 extending to the side wall of the cushion block 400, and the first connecting hole 411 is connected to the first air duct 321. The first clamp 100 is provided with a first fan 500, at least one cushion block 400 is located on one side of the first fan 500, and the first fan 500 has a first air outlet 510, and the second connecting hole 412 of the cushion block 400 located on one side of the first fan 500 faces the first air outlet 510.

[0051] In the above structure, the second air duct 410 has a first connecting hole 411 and a second connecting hole 412 extending to the side wall of the cushion block 400, and the first connecting hole 411 is connected to the first air duct 321. By arranging the first fan 500 on the first clamp 100, at least one cushion block 400 is located on one side of the first fan 500 and the second connecting hole 412 faces the first air outlet 510, so that the first fan 500 can introduce the external air into the second air duct 410 through the second connecting hole 412 of the cushion block 400 at the first clamp 100, and then introduce it into the first air duct 321 through the first connecting hole 411, and finally blow it out from the second air duct 410 of the cushion block 400 at the second clamp 200, so as to accelerate the air circulation in the first air duct 321, so that the transformer has a better cooling and heat dissipation effect, and avoids the accelerated aging of the materials near the first air duct 321 due to excessive temperature, which is conducive to extending the service life of the transformer.

[0052] It is understandable that the number of the first fans 500 may be one, two or more, and the present invention does not make any specific limitation on this. It only requires that the first fans 500 can cooperate with the pads 400 located on the sides of the first fans 500 to supply air to the first air duct 321 .

[0053] Reference Figures 1 to 10 In some embodiments, at least two pads 400 are arranged between the first clamp 100 and the coil assembly 300, and the first fan 500 is installed between two adjacent pads 400, and the second connecting holes 412 of the pads 400 located on both sides of the first fan 500 are both facing the first air outlet 510.

[0054] In the above structure, at least two pads 400 are arranged between the first clamp 100 and the coil assembly 300, and the first fan 500 is installed between two adjacent pads 400, and the second connecting holes 412 of the pads 400 on both sides are oriented toward the first air outlet 510 of the first fan 500, so that the first fan 500 can supply air to the second air ducts 410 of the two pads 400 at the same time, and then can supply air to the two first air ducts 321 on the coil assembly 300 at the same time, thereby accelerating the air circulation speed in the two first air ducts 321, so that the transformer has a better cooling and heat dissipation effect, avoiding the accelerated aging of the materials near the first air duct 321 due to excessively high temperature, and thus helping to extend the service life of the transformer.

[0055] Reference Figures 1 to 10 In some embodiments, the second air duct 410 has two second connecting holes 412 , which are correspondingly arranged on opposite sides of the cushion block 400 , and the axis of the second connecting hole 412 is arranged at an obtuse angle to the axis of the first connecting hole 411 .

[0056] In the above structure, two second connecting holes 412 are provided in the second air duct 410, and the two second connecting holes 412 are correspondingly provided on the opposite sides of the cushion block 400. Thus, when the first fan 500 is located between two adjacent cushion blocks 400, both cushion blocks 400 have a second connecting hole 412 that can face the first air outlet 510 of the first fan 500, thereby ensuring that the first fan 500 can simultaneously supply air to the second connecting holes 412 of the two cushion blocks 400. In addition, compared with the structure in which only one second connecting hole 412 is provided in the second air duct 410, two second connecting holes 412 are provided in the second air duct 410, and the two second connecting holes 412 are correspondingly provided on the opposite sides of the cushion block 400, so that any second through hole of the cushion block 400 can face the first fan 500, making the installation of the cushion block 400 more convenient.

[0057] By arranging the axis of the second connecting hole 412 at an obtuse angle to the axis of the first connecting hole 411, it is convenient to direct the second connecting hole 412 toward the first air outlet 510 of the first fan 500, and to guide the air blown out of the first air outlet 510 into the second air duct 410, thereby facilitating the air circulation in the first air duct 321, so that the transformer has a better cooling and heat dissipation effect.

[0058] It can be understood that in the above structure, when more than three pads 400 are arranged between the first clamp 100 and the coil assembly 300, a first fan 500 can be arranged between every two adjacent pads 400. At this time, there are first fans 500 on both sides of the middle pad 400. By setting two second connecting holes 412 in the second air duct 410, air can be taken in by the two second connecting holes 412 of the middle pad 400, thereby further accelerating the air circulation in the first air duct 321, so that the transformer has a better cooling and heat dissipation effect, avoiding the accelerated aging of the materials near the first air duct 321 due to excessively high temperature, and thus helping to extend the service life of the transformer.

[0059] It is understandable that, referring to Fig.10 In some embodiments, the second air duct 410 is shaped like an inverted "Y", which not only enables the two second connecting holes 412 to be correspondingly arranged on opposite sides of the cushion block 400, and the axis of the second connecting hole 412 is arranged at an obtuse angle to the axis of the first connecting hole 411, but also facilitates the processing of the second air duct 410.

[0060] Reference Figures 1 to 10 In some embodiments, the number of coil assemblies 300 is three groups, all coil assemblies 300 are arranged at intervals in the left-right direction, a second fan 600 is arranged between every two adjacent coil assemblies 300, the second fan 600 is installed on the first clamp 100, the second fan 600 has a second air outlet, and one of the second connecting holes 412 of the cushion block 400 located on the left and right sides of the second fan 600 faces the second air outlet.

[0061] In the above structure, by setting up the second fan 600, the second fan 600 can supply air to the second air ducts 410 of the pads 400 located on the left and right sides thereof, thereby simultaneously supplying air to the first air ducts 321 of the two groups of coil assemblies 300, thereby further facilitating the air circulation in each first air duct 321 inside the transformer, so that the transformer has a better cooling and heat dissipation effect, avoiding accelerated aging of materials near the first air duct 321 due to excessively high temperature, and thus helping to extend the service life of the transformer.

[0062] It is understandable that the number of the coil assemblies 300 is three, which is only for Figures 1 to 10 As an exemplary illustration, the number of the coil assemblies 300 may be not only three groups, but also two groups, four groups, five groups or more groups, which is not specifically limited in the present invention.

[0063] It can be understood that the second connecting holes 412 of the cushion blocks 400 located on the left and right sides of the second fan 600 are oriented toward the second air outlet. Figures 1 to 10As an exemplary illustration, in some embodiments, the second fan 600 may also supply air only to one of the second connecting holes 412 of the cushion block 400 on its left or right side, that is, one of the second connecting holes 412 of the cushion block 400 located on the left or right side of the second fan 600 faces the second air outlet, and the utility model does not make any specific limitation on this.

[0064] It is understandable that the second fan 600 is disposed on the first clamp 100, which is only for Figures 1 to 10 As an exemplary illustration, the second fan 600 can be arranged on the second clamp 200 in addition to the first clamp 100, and the present invention does not make any specific limitation on this.

[0065] It is understandable that, referring to Figures 1 to 12 The second fan 600 may be connected to a mounting plate and mounted on the first clamp 100 via the mounting plate. The first fan 500 may also be connected to a mounting plate and mounted on the first clamp 100 via the mounting plate.

[0066] Reference Figures 1 to 12 In some embodiments, the second fan 600 is provided with a first air guide portion and a second air guide portion located at the second air outlet, the first air guide portion is inclined toward the left side of the second fan 600 along the direction away from the second air outlet, and the second air guide portion is arranged on the right side of the first air guide portion and is inclined toward the right side of the second fan 600 along the direction away from the second air outlet.

[0067] In the above structure, by setting the first air guide portion and the second air guide portion, the first air guide portion is inclined toward the left side of the second fan 600 along the direction away from the second air outlet, thereby part of the air blown out of the second air outlet can be guided to the left side of the second fan 600, and then part of the air blown out of the second air outlet can be guided to the second air duct 410 of the pad 400 on the left side of the second fan 600; the second air guide portion is arranged on the right side of the first air guide portion and is inclined toward the right side of the second fan 600 along the direction away from the second air outlet, thereby part of the air blown out of the second air outlet can be guided to the right side of the second fan 600, and then part of the air blown out of the second air outlet can be guided to the second air duct 410 of the pad 400 located on the right side of the second fan 600. It can be seen that the first air guide portion and the second air guide portion can cooperate to divert the wind blown out from the second air outlet to the left and right sides of the second fan 600, and guide the air to the corresponding second connecting hole 412, thereby facilitating the guidance of external air into the second air duct 410, thereby accelerating the air circulation in the first air duct 321, so that the transformer has a better cooling and heat dissipation effect, avoiding the accelerated aging of the materials near the first air duct 321 due to excessive temperature, and thus helping to extend the service life of the transformer.

[0068] It is understandable that, in some embodiments, the first fan 500 may also adopt the same structure as the second fan 600, and the present invention does not make any specific limitation on this.

[0069] Reference Figures 1 to 12 In some embodiments, the first air guide portion includes three first air guide plates 610 disposed at the second air outlet, the first air guide plates 610 are inclined toward the left side of the second fan 600 along a direction away from the second air outlet, and two adjacent first air guide plates 610 are arranged at intervals along the left-right direction to form a first air guide channel 611. The second air guide portion includes three second air guide plates 620 disposed at the second air outlet, the second air guide plates 620 are inclined toward the right side of the second fan 600 along a direction away from the second air outlet, and two adjacent second air guide plates 620 are arranged at intervals along the left-right direction to form a second air guide channel 621.

[0070] In the above structure, the first air guide part is set as three first air guide plates 610 located at the second air outlet, the first air guide plate 610 is inclined toward the left side of the second fan 600 along the direction away from the second air outlet, and two adjacent first air guide plates 610 are arranged at intervals in the left and right directions to form a first air guide channel 611, so that part of the air blown out of the second air outlet can be guided to the left side of the second fan 600 through the first air guide channel 611, and then part of the air blown out of the second air outlet can be guided to the second air duct 410 of the pad 400 located on the left side of the second fan 600, wherein the first air guide plate 610 has a simple structure and is easy to install and produce and process, thereby facilitating the production and manufacturing of the transformer. Similarly, by setting the second air guide part as three second air guide plates 620 located at the second air outlet, the second air guide plates 620 are inclined toward the right side of the second fan 600 along the direction away from the second air outlet, and two adjacent second air guide plates 620 are arranged at intervals in the left and right directions to form a second air guide channel 621, thereby allowing part of the air blown out of the second air outlet to be guided to the right side of the second fan 600 through the second air guide channel 621, and further allowing part of the air blown out of the second air outlet to be guided to the second air duct 410 of the pad 400 located on the right side of the second fan 600, wherein the second air guide plates 620 have a simple structure and are easy to install and produce, thereby facilitating the production and manufacturing of the transformer.

[0071] It is understandable that the first air guide portion includes three first air guide plates 610, which is only for Figures 1 to 12 As an exemplary illustration, the number of the first air guide plates 610 in the first air guide portion may be three, two, four or more, and the present invention does not make any specific limitation on this. Similarly, the number of the second air guide plates 620 in the second air guide portion may be three, two, four or more, and the present invention does not make any specific limitation on this.

[0072] It is understandable that, in addition to being configured as the structure of the first air guide plate 610, the first air guide portion can also be directly configured as an air guide channel connected to the second air outlet and extending toward the left side of the second fan 600, or the first air guide portion can also be configured as other air guide structures, which the utility model does not specifically limit. Similarly, in addition to being configured as the structure of the second air guide plate 620, the second air guide portion can also be directly configured as an air guide channel connected to the second air outlet and extending toward the right side of the second fan 600, or the second air guide portion can also be configured as other air guide structures, which the utility model does not specifically limit.

[0073] Reference Figures 1 to 10 In some embodiments, the outer peripheral wall of the cushion block 400 is provided with five convex strips 420 arranged at intervals in the up-down direction.

[0074] In the above structure, five convex strips 420 spaced apart in the up-down direction are provided on the outer peripheral wall of the cushion block 400. The convex strips 420 can serve as the umbrella skirt of the cushion block 400, thereby increasing the creepage distance between the coil assembly 300 and the first clamp 100 and the second clamp 200, and improving the electrical performance of the transformer.

[0075] It is understandable that the number of the convex strips 420 is five, which is only for Figures 1 to 12 An exemplary description is given above. In addition, the number of the convex strips 420 may also be two, three, four, six or more, which is not specifically limited in the present invention.

[0076] Reference Figure 6 In some embodiments, the second clamp 200 is located below the coil assembly 300, the cushion block 400 is provided with a mounting groove 430, and a positioning column 110 is provided between the cushion block 400 and the second clamp 200. The positioning column 110 is installed on the second clamp 200 and inserted into the mounting groove 430, thereby positioning the cushion block 400 to avoid displacement of the cushion block 400.

[0077] Reference Figure 7 In some embodiments, the first clamp 100 is located above the coil assembly 300, and a pressure pin is arranged between the cushion block 400 and the first clamp 100. The pressure pin is installed on the first clamp 100 and extends into the installation groove 430. An elastic member 220 is also arranged between the pressure pin and the cushion block 400, thereby making the connection between the cushion block 400 and the first clamp 100 tighter, so that the cushion block 400 can support the coil assembly 300 more stably.

[0078] It is understandable that the elastic member 220 may be a disc spring. Of course, in addition to this, a compression spring or other elastic structures may also be used, which is not specifically limited in the present invention.

[0079] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A transformer, characterized in that include: A first clamp (100); A second clamp (200) arranged at an interval from the first clamp (100); A coil assembly (300) is arranged between the first clamp (100) and the second clamp (200); the coil assembly (300) is provided with a first air duct (321) extending to both ends of the coil assembly (300); at least one cushion block (400) is arranged between the first clamp (100) and the coil assembly (300); and at least one cushion block (400) is also arranged between the second clamp (200) and the coil assembly (300); The cushion block (400) is provided with a second air duct (410), and the second air duct (410) is connected to the first air duct (321).

2. The transformer according to claim 1, characterized in that: The coil assembly (300) comprises an iron core (310), a low-voltage coil (320) and a high-voltage coil (330), wherein the low-voltage coil (320) is located between the high-voltage coil (330) and the iron core (310), and the first air duct (321) is opened in the low-voltage coil (320).

3. The transformer according to claim 2, characterized in that: The cushion block (400) has a first abutting portion (401) and a second abutting portion (402), the first abutting portion (401) abuts against the low-voltage coil (320), the second abutting portion (402) abuts against the high-voltage coil (330), and the second air duct (410) is opened in the first abutting portion (401).

4. The transformer according to claim 1, characterized in that: The second air duct (410) has a first connecting hole (411) and a second connecting hole (412) extending to the side wall of the cushion block (400), and the first connecting hole (411) is connected to the first air duct (321); The first clamp (100) is provided with a first fan (500), at least one of the cushion blocks (400) is located on one side of the first fan (500), the first fan (500) has a first air outlet (510), and the second connecting hole (412) of the cushion block (400) located on one side of the first fan (500) faces the first air outlet (510).

5. The transformer according to claim 4, characterized in that: At least two of the cushion blocks (400) are arranged between the first clamp (100) and the coil assembly (300), the first fan (500) is installed between two adjacent cushion blocks (400), and the second connecting holes (412) of the cushion blocks (400) located on both sides of the first fan (500) are both oriented toward the first air outlet (510).

6. The transformer according to claim 5, characterized in that: The second air duct (410) has two second connecting holes (412), and the two second connecting holes (412) are correspondingly arranged on two opposite sides of the cushion block (400), and the axis of the second connecting hole (412) is arranged at an obtuse angle to the axis of the first connecting hole (411).

7. The transformer according to claim 6, characterized in that: The number of the coil assemblies (300) is at least two groups, and all the coil assemblies (300) are arranged at intervals in the left-right direction. A second fan (600) is provided between each two adjacent coil assemblies (300), and the second fan (600) is installed on the first clamp (100) or the second clamp (200). The second fan (600) has a second air outlet, and one of the second connecting holes (412) of the cushion block (400) located on the left and / or right side of the second fan (600) faces the second air outlet.

8. The transformer according to claim 7, characterized in that: The second fan (600) is provided with a first air guide portion and a second air guide portion located at the second air outlet, the first air guide portion being inclined toward the left side of the second fan (600) in a direction away from the second air outlet, and the second air guide portion being arranged on the right side of the first air guide portion and being inclined toward the right side of the second fan (600) in a direction away from the second air outlet.

9. The transformer according to claim 8, characterized in that: The first air guide portion comprises at least two first air guide plates (610) arranged at the second air outlet, the first air guide plates (610) being inclined in a direction away from the second air outlet and toward the left side of the second fan (600), and two adjacent first air guide plates (610) being arranged at intervals in the left-right direction to form a first air guide channel (611); The second air guide portion comprises at least two second air guide plates (620) arranged at the second air outlet, the second air guide plates (620) are inclined toward the right side of the second fan (600) in a direction away from the second air outlet, and two adjacent second air guide plates (620) are arranged at intervals in the left-right direction to form a second air guide channel (621).

10. The transformer according to claim 1, characterized in that: The outer peripheral wall of the cushion block (400) is provided with at least two convex strips (420) arranged at intervals in the up-down direction.

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