Transformer with heat dissipation structure

Abstract

The transformer with the heat dissipation structure comprises an iron core, N heat conduction layers are arranged on the bottom face of the iron core, and the heat conduction layers from the first heat conduction layer to the Nth heat conduction layer are arranged from top to bottom. Cooling liquid and a heat dissipation pipe are arranged in the first heat conduction layer, the heat dissipation pipe comprises a liquid inlet and a liquid outlet, and a plurality of bent parts are arranged between the liquid inlet and the liquid outlet; the liquid outlet of the heat dissipation pipe in the kth heat conduction layer is communicated with the liquid inlet of the heat dissipation pipe in the (k + 1) th heat conduction layer, the liquid outlet of the heat dissipation pipe in the Nth heat conduction layer is communicated with the liquid inlet of the heat dissipation pipe in the first heat conduction layer, and k is larger than or equal to 1 and smaller than or equal to N-1. Due to the fact that the heat dissipation pipe in the first heat conduction layer is communicated with the heat dissipation pipes in the other N-1 heat conduction layers, cooling liquid circularly flows in the heat dissipation pipes in the N heat conduction layers, and heat generated by the iron core is transmitted to the heat dissipation pipes in the other N-1 heat conduction layers from the heat dissipation pipe in the first heat conduction layer.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer with a heat dissipation structure. Background Art

[0002] Transformers are commonly used electronic devices in the PCB processing industry. The pins of the transformer are soldered on the surface of the PCB. Transformers have the functions of voltage conversion, current conversion and electrical isolation. Voltage conversion refers to converting the voltage in the input circuit into the voltage required by the output circuit. Current conversion refers to changing the size of the output current as needed. Electrical isolation refers to the isolation between the input circuit and the output circuit based on the iron core and winding.

[0003] The main heating parts of the transformer include the iron core and windings. The iron core is the core component of the transformer and the main channel for the transformer to conduct heat. The iron core generates hysteresis loss and eddy current loss due to the change of magnetic flux, which causes heating. The winding generates resistance loss under the action of current and voltage, which causes heating. When the temperature of the transformer is too high, a large amount of heat will be generated, which will pose a hidden danger to the safety of the circuit.

[0004] Therefore, a transformer is needed that can dissipate heat in time and reduce the temperature during operation. Utility Model Content

[0005] In order to overcome the problems existing in the related art, the purpose of the utility model is to provide a transformer with a heat dissipation structure, which can dissipate heat in time and reduce the temperature during operation.

[0006] A transformer with a heat dissipation structure comprises an iron core, wherein N heat-conducting layers are arranged on the bottom surface of the iron core, and the first to Nth heat-conducting layers are arranged from top to bottom; a coolant and a heat dissipation pipe are arranged in the first heat-conducting layer, and the heat dissipation pipe comprises a liquid inlet and a liquid outlet, and a plurality of bent portions are arranged between the liquid inlet and the liquid outlet; the liquid outlet of the heat dissipation pipe in the kth heat-conducting layer is connected to the liquid inlet of the heat dissipation pipe in the k+1th heat-conducting layer, and the liquid outlet of the heat dissipation pipe in the Nth heat-conducting layer is connected to the liquid inlet of the heat dissipation pipe in the first heat-conducting layer, wherein 1≤k≤N-1.

[0007] In a preferred technical solution of the utility model, the heat dissipation pipe further comprises a connecting portion, both ends of the connecting portion are respectively connected to the bending portions, and the bending directions of the bending portions at both ends of the connecting portion are opposite.

[0008] In a preferred technical solution of the utility model, a heat conducting sheet is connected to the side surface of the iron core.

[0009] In a preferred technical solution of the utility model, a heat conducting tube is connected to a side of the heat conducting plate away from the iron core.

[0010] In a preferred technical solution of the utility model, every K heat-conducting tubes form a heat-conducting group, and the heat-conducting group is evenly distributed on a side of the heat-conducting plate away from the iron core, and K≥3.

[0011] In a preferred technical solution of the utility model, the heat pipes are evenly distributed on a side of the heat conducting plate away from the iron core.

[0012] In a preferred technical solution of the utility model, two groups of windings are wound on the iron core, and a baffle is arranged between the two groups of windings, and the baffle is used to isolate the two groups of windings.

[0013] In a preferred technical solution of the present invention, a base is provided on a side of the Nth heat-conducting layer away from the iron core, and pins are provided on a side surface of the base.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a transformer with a heat dissipation structure, including an iron core, wherein the bottom surface of the iron core is provided with N heat-conducting layers, and the first to the Nth heat-conducting layers are arranged from top to bottom; a coolant and a heat dissipation pipe are provided in the first heat-conducting layer, and the heat dissipation pipe includes a liquid inlet and a liquid outlet, and a plurality of bends are provided between the liquid inlet and the liquid outlet; the liquid outlet of the heat dissipation pipe in the kth heat-conducting layer is connected with the liquid inlet of the heat dissipation pipe in the k+1th heat-conducting layer, and the liquid outlet of the heat dissipation pipe in the Nth heat-conducting layer is connected with the liquid inlet of the heat dissipation pipe in the first heat-conducting layer, wherein 1≤k≤N-1. The upward side of the first heat-conducting layer contacts the bottom surface of the iron core, and the downward side of the first heat-conducting layer contacts the second heat-conducting layer. When the transformer with a heat dissipation structure is working and the temperature of the iron core rises abnormally, the heat of the iron core is transferred to the coolant and the heat dissipation pipe in the first heat-conducting layer, and the temperature of the coolant in the heat dissipation pipe in the first heat-conducting layer rises. Since the heat dissipation pipe in the first heat-conducting layer is connected to the heat dissipation pipes in the other N-1 heat-conducting layers, the coolant circulates in the heat dissipation pipes in the N heat-conducting layers, and the heat generated by the iron core is transferred from the heat dissipation pipe in the first heat-conducting layer to the heat dissipation pipes in the other N-1 heat-conducting layers. A plurality of bends are provided between the liquid inlet and the liquid outlet of the heat dissipation pipe, which can extend the length of the heat dissipation pipe, so that the coolant can flow fully in the heat dissipation pipe, and the entire heat dissipation pipe can accommodate more coolant, thereby absorbing more heat generated by the iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a transformer with a heat dissipation structure provided by the utility model;

[0017] Figure 2It is a structural schematic diagram of the first heat-conducting layer provided by the utility model;

[0018] Figure 3 The heat conducting sheet provided by the utility model is provided with a heat conducting group;

[0019] Figure 4 It is a structural schematic diagram of XX provided by the utility model.

[0020] Figure numerals: 1. iron core; 2. N heat-conducting layers; 21. 1st heat-conducting layer; 22. Nth heat-conducting layer; 3. coolant; 4. heat pipe; 41. liquid inlet; 42. liquid outlet; 43. bending portion; 44. connecting portion; 5. heat-conducting sheet; 6. heat-conducting group; 61. heat-conducting pipe; 7. winding; 8. baffle; 9. base; 91. pin. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art. Example 1

[0022] like Figure 1-Figure 2 As shown, this embodiment provides a transformer with a heat dissipation structure, including an iron core 1, wherein N heat-conducting layers 2 are arranged on the bottom surface of the iron core 1, and the first heat-conducting layer 21 to the Nth heat-conducting layer 222 are arranged from top to bottom; a coolant 3 and a heat dissipation pipe 4 are arranged in the first heat-conducting layer 21, and the heat dissipation pipe 4 includes a liquid inlet 41 and a liquid outlet 42, and a plurality of bent portions 43 are arranged between the liquid inlet 41 and the liquid outlet 42; the liquid outlet 42 of the heat dissipation pipe 4 in the kth heat-conducting layer is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the k+1th heat-conducting layer, and the liquid outlet 42 of the heat dissipation pipe 4 in the Nth heat-conducting layer 222 is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the first heat-conducting layer 21, wherein 1≤k≤N-1.

[0023] In this embodiment, N=3 is taken as an example. During the process of the core 1 temperature rising, the heat generated by the core 1 is transferred to the first heat-conducting layer 21, the temperature of the coolant 3 in the first heat-conducting layer 21 rises, and the coolant 3 flows from the liquid outlet 42 of the heat-dissipating tube 4 in the first heat-conducting layer 21 to the liquid inlet 41 of the heat-dissipating tube 4 in the second heat-conducting layer. The coolant 3 flowing out of the liquid outlet 42 of the heat-dissipating tube 4 in the second heat-conducting layer sequentially flows through the heat-dissipating tube 4 in the third heat-conducting layer to the heat-dissipating tube 4 in the Nth heat-conducting layer 222, and finally flows back from the liquid outlet 42 of the heat-dissipating tube 4 in the Nth heat-conducting layer 222 to the liquid inlet 41 of the heat-dissipating tube 4 in the first heat-conducting layer 21.

[0024] The coolant 3 circulates in the heat pipes 4 in the N heat conducting layers 2. The heat pipes 4 in each heat conducting layer are provided with a plurality of bends 43. The heat pipes 4 are relatively long, so that the coolant 3 can fully flow in the heat pipes 4. The entire heat pipe 4 can accommodate more coolant 3, thereby absorbing more heat generated by the iron core 1.

[0025] The heat dissipation pipe 4 further includes a connection portion 44 , and both ends of the connection portion 44 are respectively connected to the bending portions 43 , and the bending directions of the bending portions 43 at both ends of the connection portion 44 are opposite.

[0026] The bent portion 43 at one end of the connection portion 44 is bent in the clockwise direction, and the bent portion 43 at the other end of the connection portion 44 is bent in the counterclockwise direction. The connection portion 44 serves to connect the two bent portions 43. One heat dissipation pipe 4 includes a plurality of bent portions 43 and a plurality of connection portions 44, which prolongs the length of the heat dissipation pipe 4.

[0027] The side of the core 1 is connected with a heat conducting sheet 5, and the side of the heat conducting sheet 5 away from the core 1 is connected with a heat conducting pipe 61. When the temperature of the core 1 increases, the heat generated by the core 1 is transferred from the heat conducting sheet 5 on the side to the heat conducting pipe 61. The heat conducting sheet 5 and the heat dissipation pipe 614 are both made of heat conducting materials, and the heat conducting sheet 5 is adapted to the side of the core 1.

[0028] like Figure 3 As shown, two sides of the iron core 1 are respectively connected to a heat conducting sheet 5, and every K heat conducting tubes 61 form a heat conducting group 6, and the heat conducting groups 6 are evenly distributed on the side of the heat conducting sheet 5 away from the iron core 1, K ≥ 3, and this embodiment takes K = 3 as an example. A heat conducting group 6 includes three heat conducting tubes 61, and multiple heat conducting groups 6 are arranged on the side of the heat conducting sheet 5 away from the iron core 1, which can improve the heat dissipation efficiency.

[0029] Two groups of windings 7 are wound around the iron core 1 , and a baffle 8 is arranged between the two groups of windings 7 . The baffle 8 is used to isolate the two groups of windings 7 .

[0030] A base 9 is disposed on a side of the Nth heat conducting layer 222 away from the iron core 1 , and a pin 91 is disposed on a side of the base 9 .

[0031] A transformer with a heat dissipation structure provided in this embodiment includes an iron core 1, wherein N heat-conducting layers 2 are arranged on the bottom surface of the iron core 1, and the first heat-conducting layer 21 to the Nth heat-conducting layer 222 are arranged from top to bottom; a coolant 3 and a heat dissipation pipe 4 are arranged in the first heat-conducting layer 21, and the heat dissipation pipe 4 includes a liquid inlet 41 and a liquid outlet 42, and a plurality of bends 43 are arranged between the liquid inlet 41 and the liquid outlet 42; the liquid outlet 42 of the heat dissipation pipe 4 in the kth heat-conducting layer is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the k+1th heat-conducting layer, and the liquid outlet 42 of the heat dissipation pipe 4 in the Nth heat-conducting layer 222 is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the first heat-conducting layer 21, wherein 1≤k≤N-1. The upward side of the first heat-conducting layer 21 contacts the bottom surface of the iron core 1, and the downward side of the first heat-conducting layer 21 contacts the second heat-conducting layer. When the transformer with the heat dissipation structure is working and the temperature of the iron core 1 rises abnormally, the heat of the iron core 1 is transferred to the coolant 3 and the heat pipe 4 in the first heat conductive layer 21, and the temperature of the coolant 3 in the heat pipe 4 in the first heat conductive layer 21 rises. Since the heat pipe 4 in the first heat conductive layer 21 is connected with the heat pipes 4 in the other N-1 heat conductive layers, the coolant 3 circulates in the heat pipes 4 in the N heat conductive layers 2, and the heat generated by the iron core 1 is transferred from the heat pipe 4 in the first heat conductive layer 21 to the heat pipes 4 in the other N-1 heat conductive layers. A plurality of bends 43 are provided between the liquid inlet 41 and the liquid outlet 42 of the heat pipe 4, which can extend the length of the heat pipe 4, so that the coolant 3 can flow fully in the heat pipe 4, and the entire heat pipe 4 can accommodate more coolant 3, thereby absorbing more heat generated by the iron core 1. Example 2

[0032] like Figure 1-Figure 2 As shown, this embodiment provides a transformer with a heat dissipation structure, including an iron core 1, wherein N heat-conducting layers 2 are arranged on the bottom surface of the iron core 1, and the first heat-conducting layer 21 to the Nth heat-conducting layer 222 are arranged from top to bottom; a coolant 3 and a heat dissipation pipe 4 are arranged in the first heat-conducting layer 21, and the heat dissipation pipe 4 includes a liquid inlet 41 and a liquid outlet 42, and a plurality of bent portions 43 are arranged between the liquid inlet 41 and the liquid outlet 42; the liquid outlet 42 of the heat dissipation pipe 4 in the kth heat-conducting layer is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the k+1th heat-conducting layer, and the liquid outlet 42 of the heat dissipation pipe 4 in the Nth heat-conducting layer 222 is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the first heat-conducting layer 21, wherein 1≤k≤N-1.

[0033] The heat dissipation pipe 4 further includes a connection portion 44 , and both ends of the connection portion 44 are respectively connected to the bending portions 43 , and the bending directions of the bending portions 43 at both ends of the connection portion 44 are opposite.

[0034] Two groups of windings 7 are wound around the iron core 1 , and a baffle 8 is arranged between the two groups of windings 7 . The baffle 8 is used to isolate the two groups of windings 7 .

[0035] A base 9 is disposed on a side of the Nth heat conducting layer 222 away from the iron core 1 , and a pin 91 is disposed on a side of the base 9 . In this embodiment, N=3 is taken as an example.

[0036] like Figure 4 As shown, a heat conducting sheet 5 is connected to the side of the iron core 1 , a side of the heat conducting sheet 5 away from the iron core 1 is connected to a heat conducting pipe 61 , and the heat conducting pipe 61 is evenly distributed on the side of the heat conducting sheet 5 away from the iron core 1 .

[0037] A plurality of heat conducting pipes 61 are evenly arranged on a side of the heat conducting sheet 5 away from the iron core 1 , so as to avoid the heat of the heat conducting pipes 61 being concentrated at one or several positions, thereby reducing potential safety hazards during heat dissipation.

[0038] The transformer with a heat dissipation structure of this embodiment includes an iron core 1, and N heat-conducting layers 2 are arranged on the bottom surface of the iron core 1, and the first heat-conducting layer 21 to the Nth heat-conducting layer 222 are arranged from top to bottom; the first heat-conducting layer 21 is provided with a coolant 3 and a heat dissipation pipe 4, and the heat dissipation pipe 4 includes a liquid inlet 41 and a liquid outlet 42, and a plurality of bending portions 43 are provided between the liquid inlet 41 and the liquid outlet 42; the liquid outlet 42 of the heat dissipation pipe 4 in the kth heat-conducting layer is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the k+1th heat-conducting layer, and the liquid outlet 42 of the heat dissipation pipe 4 in the Nth heat-conducting layer 222 is connected to the liquid inlet 41 of the heat dissipation pipe 4 in the first heat-conducting layer 21, wherein 1≤k≤N-1. The side of the iron core 1 is connected with a heat conductor, and the side of the heat conducting sheet 5 away from the iron core 1 is connected with a heat conducting pipe 61, and the heat conducting pipe 61 is evenly distributed on the side of the heat conducting sheet 5 away from the iron core 1. Multiple heat conducting pipes 61 are evenly arranged on the side of the heat conducting sheet 5 away from the iron core 1, which can avoid the heat of the heat conducting pipe 61 from being concentrated in one or several positions, thereby reducing the safety hazard during heat dissipation.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0040] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A transformer with a heat dissipation structure, characterized in that: It includes an iron core, wherein N heat-conducting layers are arranged on the bottom surface of the iron core, and the first to Nth heat-conducting layers are arranged from top to bottom; a coolant and a heat dissipation pipe are arranged in the first heat-conducting layer, and the heat dissipation pipe includes a liquid inlet and a liquid outlet, and a plurality of bending parts are arranged between the liquid inlet and the liquid outlet; the liquid outlet of the heat dissipation pipe in the kth heat-conducting layer is connected to the liquid inlet of the heat dissipation pipe in the k+1th heat-conducting layer, and the liquid outlet of the heat dissipation pipe in the Nth heat-conducting layer is connected to the liquid inlet of the heat dissipation pipe in the first heat-conducting layer, wherein 1≤k≤N-1.

2. The transformer with a heat dissipation structure according to claim 1, characterized in that: The heat dissipation pipe further includes a connecting portion, both ends of which are respectively connected to the bent portions, and the bent directions of the bent portions at both ends of the connecting portion are opposite.

3. The transformer with a heat dissipation structure according to claim 1, characterized in that: The side surface of the iron core is connected with a heat conducting sheet.

4. The transformer with a heat dissipation structure according to claim 3, characterized in that: A heat conducting pipe is connected to a surface of the heat conducting sheet away from the iron core.

5. The transformer with a heat dissipation structure according to claim 4, characterized in that: Every K heat-conducting tubes form a heat-conducting group, and the heat-conducting group is evenly distributed on a side of the heat-conducting sheet away from the iron core, and K≥3.

6. The transformer with a heat dissipation structure according to claim 4, characterized in that: The heat-conducting pipes are evenly distributed on a side of the heat-conducting sheet away from the iron core.

7. The transformer with a heat dissipation structure according to claim 1, characterized in that: Two groups of windings are wound on the iron core, and a baffle is arranged between the two groups of windings, and the baffle is used to isolate the two groups of windings.

8. The transformer with a heat dissipation structure according to claim 1, characterized in that: A base is provided on a side of the Nth heat-conducting layer away from the iron core, and pins are provided on a side of the base.

Images