Integrated frequency conversion equipment

Abstract

The utility model belongs to the technical field of frequency conversion equipment, and provides integrated frequency conversion equipment which comprises a shell, a circuit board, a switch device, a first filtering device and a second filtering device. The circuit board is arranged in the accommodating cavity; the first filtering device is arranged in the accommodating cavity and is electrically connected with the circuit board; the second filtering device is arranged in the accommodating cavity and is electrically connected with the circuit board; the switch device is arranged in the containing cavity and electrically connected with the circuit board, and the switch device is used for controlling current to flow through the first filtering device and / or the second filtering device. According to the integrated frequency conversion equipment provided by the invention, the first filtering device and the second filtering device are arranged in the accommodating cavity and are electrically connected with the circuit board, so that various current frequencies in different ranges are output, switching can be carried out according to actual conditions, and therefore, the integrated frequency conversion equipment is adaptive to various cables with relatively large lengths and spans, and the working efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of frequency conversion equipment, and more specifically, to an integrated frequency conversion equipment. Background Art

[0002] Frequency conversion equipment is a kind of power control device that uses the on-off function of power semiconductor devices to convert industrial frequency power supply into another frequency. Frequency conversion equipment contains a large number of power devices, such as IGBT modules (insulated gate bipolar transistors), bus capacitors, rectifier bridges, filter devices, etc.

[0003] As the complexity of the project continues to increase, frequency conversion equipment needs to work with cables of different lengths. In the process of transmitting current, each length of cable needs to transmit current at a set current frequency in order to reduce eddy current losses during the transmission process. However, the existing frequency conversion equipment has a small range of current frequency regulation and is difficult to adapt to multiple cables with large length spans at the same time, resulting in a significant reduction in work efficiency. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an integrated frequency conversion device to solve the technical problem that the integrated frequency conversion device in the prior art cannot adjust the current frequency in multiple different ranges, and thus cannot adapt to multiple cables with large length spans at the same time, resulting in low working efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an integrated frequency conversion device, including: a shell, a housing is provided with a housing; a circuit board, the circuit board is arranged in the housing; a first filtering device, the first filtering device is arranged in the housing, and is electrically connected to the circuit board; a second filtering device, the second filtering device is arranged in the housing, and is electrically connected to the circuit board; a switch device, the switch device is arranged in the housing, and is electrically connected to the circuit board, and the switch device is used to control the current to flow through the first filtering device and / or the second filtering device.

[0006] The beneficial effect of the integrated frequency conversion device provided by the present application is that: compared with the prior art, the integrated frequency conversion device of the present application arranges the circuit board and the switch device in the accommodating cavity, and electrically connects the switch device to the circuit board, the switch device can control the connection or disconnection of the current, and at the same time, the first filter device and the second filter device are both arranged in the accommodating cavity, and the two are electrically connected to the circuit board, so that during the operation of the integrated frequency conversion device of the present application, the switch device can control the current to flow through one of the first filter device and the second filter device, or control the current to flow through the first filter device and the second filter device at the same time, so as to output a variety of current frequencies in different ranges, and can be switched according to actual conditions, so as to adapt to a variety of cables with larger length spans and improve work efficiency.

[0007] In one of the embodiments, a support member is further included, and the support member is disposed in the accommodating cavity, and the circuit board, the switch device, the first filtering device and the second filtering device are all mounted on the support member.

[0008] In one of the embodiments, a first heat dissipation component is further included, wherein the first heat dissipation component includes a first heat sink, the support member is provided with a heat dissipation through hole corresponding to the circuit board, and the first heat sink is arranged in the heat dissipation through hole.

[0009] In one of the embodiments, a second heat dissipation component is further included, and a heat dissipation cavity for dissipating heat from the circuit board is also provided in the shell. An air inlet and an air outlet interconnected with the heat dissipation cavity are also provided on the shell, and the second heat dissipation component is arranged in the heat dissipation cavity.

[0010] In one of the embodiments, the second heat dissipation assembly includes a second heat sink and heat dissipation fins, the second heat sink is disposed at the air inlet or the exhaust port, the heat dissipation fins are in contact with the circuit board, and the heat dissipation fins are used to absorb heat from the circuit board.

[0011] In one of the embodiments, the second heat dissipation assembly further includes a cover plate, the cover plate is arranged corresponding to the second radiator, the cover plate is detachably connected to the housing, and a first protective grille is provided on the cover plate.

[0012] In one of the embodiments, a second protective grille is provided at the air inlet and / or the air outlet.

[0013] In one of the embodiments, a control component is further included, and the control component includes a control board. The control board is disposed in the accommodating cavity, and the control board is electrically connected to the circuit board.

[0014] In one of the embodiments, the control component further includes a control button, which is disposed on an outer side of the housing and is electrically connected to the control panel.

[0015] In one of the embodiments, the housing includes a shell and an upper cover, the accommodating cavity is formed by the shell and the upper cover, and the upper cover is detachably connected to the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an integrated frequency conversion device provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 The exploded structure diagram of the integrated frequency conversion device shown;

[0019] Figure 3 for Figure 2 A three-dimensional structural diagram of the support member, the first heat dissipation assembly and the second filter device shown;

[0020] Figure 4 for Figure 1 A cross-sectional structural diagram of an integrated frequency conversion device shown;

[0021] Figure 5 for Figure 1 Another exploded structural diagram of the integrated frequency conversion device shown.

[0022] Among them, the reference numerals in the figure are:

[0023] 10. Shell; 101. Accommodation cavity; 102. Heat dissipation cavity; 11. Shell; 111. Air inlet; 112. Exhaust port; 113. Second protective grille; 12. Upper cover;

[0024] 20. Circuit board; 21. Fence type terminal block;

[0025] 30. Switchgear;

[0026] 40. A first filtering device;

[0027] 50. A second filtering device;

[0028] 60. Support member; 61. Heat dissipation through hole; 62. First support portion; 63. Second support portion;

[0029] 70. a first heat dissipation component; 71. a first heat sink;

[0030] 80, second heat dissipation assembly; 81, second radiator; 82, heat dissipation fins; 83, cover plate; 831, first protective grille;

[0031] 90. Control component; 91. Control panel; 92. Control button. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] Please also read Figures 1 to 5 The integrated frequency conversion device provided by the embodiment of the present application is now described. The integrated frequency conversion device includes a housing 10, a circuit board 20, a switch device 30, a first filter device 40 and a second filter device 50.

[0038] A housing 10 is provided with a housing cavity 101; a circuit board 20 is arranged in the housing cavity 101; a first filtering device 40 is arranged in the housing cavity 101 and is electrically connected to the circuit board 20; a second filtering device 50 is arranged in the housing cavity 101 and is electrically connected to the circuit board 20; a switch device 30 is arranged in the housing cavity 101 and is electrically connected to the circuit board 20, and the switch device 30 is used to control the current to flow through the first filtering device 40 and / or the second filtering device 50.

[0039] For example, Figures 1 to 3 As shown, the housing 10 is a hollow rectangular structure. The housing 10 is mainly used to protect the electrical components in the accommodating cavity 101. The circuit board 20 is fixedly installed in the accommodating cavity 101. The switch device 30 is fixedly installed in the accommodating cavity 101. The switch device 30 is used to control the connection or disconnection between the current and the circuit board 20. The functions of the first filter device 40 and the second filter device 50 are similar. Both can effectively filter out the frequency point of a specific frequency in the power line or the frequency other than the frequency point to obtain a power signal of a specific frequency, or a power signal after eliminating a specific frequency. However, in this embodiment, the power signals of the specific frequencies output by the first filter device 40 and the second filter device 50 are different from each other, so that when the first filter device 40 and the second filter device 50 are used alone, two power signals of different specific frequencies can be obtained. When the first filter device 40 and the second filter device 50 are used in combination, a power signal of a third specific frequency can be obtained.

[0040] Furthermore, in the present embodiment, a fence-type terminal seat 21 electrically connected to the circuit board 20 is provided on one side of the circuit board 20 close to the switching device 30, the first filtering device 40 and the second filtering device 50, wherein the terminals in the switching device 30, the first filtering device 40 and the second filtering device 50 connected to the circuit board 20 are electrically connected in the connecting grooves of the corresponding terminal seats. By providing the fence-type terminal seat 21 on the circuit board 20, all the terminals connected to the circuit board 20 can be insulated and separated, thereby avoiding accidental touching between the terminals and causing a short circuit.

[0041] Compared with the prior art, the integrated frequency conversion device provided by the present application is different from the prior art in that the circuit board 20 and the switch device 30 are arranged in the accommodating cavity 101, and the switch device 30 is electrically connected to the circuit board 20. The switch device 30 can control the connection or disconnection of the current. At the same time, the first filter device 40 and the second filter device 50 are both arranged in the accommodating cavity 101, and the two are electrically connected to the circuit board 20. Therefore, during the operation of the integrated frequency conversion device of the present application, the switch device 30 can control the current to flow through one of the first filter device 40 and the second filter device 50, or control the current to flow through the first filter device 40 and the second filter device 50 at the same time, so as to output a variety of current frequencies in different ranges, and can be switched according to actual conditions, so as to adapt to a variety of cables with larger length spans and improve work efficiency.

[0042] In one embodiment of the present application, please refer to Figures 2 to 4 The integrated frequency conversion device also includes a support member 60 , which is disposed in the accommodating cavity 101 , and the circuit board 20 , the switch device 30 , the first filter device 40 and the second filter device 50 are all mounted on the support member 60 .

[0043] Optionally, the support member 60 is fixedly mounted on the inner wall surface of the housing 10 by using fasteners, wherein the support member 60 includes a first support portion 62 and a second support portion 63, wherein the circuit board 20 and the fence-type terminal seat 21 are fixedly mounted on the first support portion 62, and the fence-type terminal seat 21 is located on a side of the first support portion 62 close to the second support portion 63. The switch device 30, the first filter device 40, and the second filter device 50 are all mounted on the second support portion 63, and in this embodiment, the switch device 30 and the first filter device 40 are mounted on the same side of the second support portion 63, and the second filter device 50 is mounted on the other side of the second support portion 63. By providing a support member 60 in the accommodating cavity 101, the support member 60 can limit the various electrical components to avoid movement during operation, thereby improving the stability of the frequency conversion equipment, and the circuit board 20, the switch device 30, the first filter device 40 and the second filter device 50 are all fixed on the support member 60. During assembly, the circuit board 20, the switch device 30, the first filter device 40 and the second filter device 50 can be first assembled on the support member 60 outside the accommodating cavity 101, and then the support member 60 can be assembled into the accommodating cavity 101, thereby improving the assembly efficiency.

[0044] In one embodiment of the present application, please refer to Figures 2 to 4 The integrated frequency conversion device also includes a first heat dissipation component 70 , which includes a first heat sink 71 . The support member 60 is provided with a heat dissipation through hole 61 corresponding to the circuit board 20 , and the first heat sink 71 is arranged in the heat dissipation through hole 61 .

[0045] Optionally, the first radiator 71 is a fan, which can drive the surrounding air to accelerate the flow, so as to take away the heat generated by the circuit board 20 after working for a long time, so as to achieve the effect of heat dissipation. In this embodiment, the circuit board 20 is arranged on the first support portion 62, and the first radiator 71 is arranged opposite to the circuit board 20. Driven by the first radiator 71, a circulating heat dissipation airflow is formed in the accommodating cavity 101, and the circulating heat dissipation can continuously drive the air around the circuit board 20 and other electrical components to flow, further improving the heat dissipation efficiency.

[0046] In one embodiment of the present application, please refer to Figure 4 and Figure 5 The integrated frequency conversion device also includes a second heat dissipation component 80. A heat dissipation cavity 102 for dissipating heat from the circuit board 20 is provided in the housing 10. An air inlet 111 and an air outlet 112 that are interconnected with the heat dissipation cavity 102 are provided on the housing 10. The second heat dissipation component 80 is arranged in the heat dissipation cavity 102.

[0047] Optionally, the heat dissipation cavity 102 is located on the side of the circuit board 20 away from the first heat dissipation component 70, and the heat dissipation cavity 102 is a long strip structure. The air inlet 111 and the exhaust port 112 in the heat dissipation cavity 102 are located at both ends of the length extension direction of the heat dissipation cavity 102. At the same time, part of the heat-emitting structure of the circuit board 20 is located in the heat dissipation cavity 102. Driven by the second heat dissipation component 80, the gas in the heat dissipation cavity 102 can form a heat dissipation airflow along the length extension direction of the heat dissipation cavity 102, thereby taking away the heat emitted from the circuit board 20, thereby achieving further heat dissipation of the circuit board 20.

[0048] In one embodiment of the present application, please refer to Figure 4 and Figure 5 The second heat dissipation assembly 80 includes a second heat sink 81 and heat dissipation fins 82 . The second heat sink 81 is disposed at the air inlet 111 or the air outlet 112 . The heat dissipation fins 82 are attached to the circuit board 20 . The heat dissipation fins 82 are used to absorb heat in the circuit board 20 .

[0049] Optionally, the heat sink fins 82 include multiple metal sheets arranged side by side. By fitting the heat sink fins 82 and the circuit board 20 together, the heat generated in the circuit board 20 can be transferred to the heat sink fins 82 in the form of heat transfer, and the arrangement direction of the multiple metal sheets is perpendicular to the flow direction of the heat dissipation airflow in the heat dissipation cavity 102, so that the airflow can pass through between the metal sheets, thereby quickly taking away the heat in the metal sheets and achieving efficient heat dissipation effect.

[0050] In one embodiment of the present application, please refer to Figure 4 and Figure 5The second heat dissipation assembly 80 further includes a cover plate 83 , which is disposed corresponding to the second radiator 81 , and the cover plate 83 is detachably connected to the housing 10 , and a first protective grille 831 is disposed on the cover plate 83 .

[0051] Optionally, the second radiator 81 is also a fan, and the second radiator 81 is installed in the heat dissipation cavity 102. In the present embodiment, the cover plate 83 is detachably installed at the exhaust port 112 of the outer shell 10. When installing the second radiator 81, the second radiator 81 is introduced into the heat dissipation cavity 102 from the exhaust port 112 for installation. Then, the installation is completed by covering the exhaust port 112 with the cover plate 83. At the same time, a first protective grille 831 is provided on the cover plate 83. The first protective grille 831 can prevent external foreign matter from entering the heat dissipation cavity 102 without affecting the discharge of gas in the heat dissipation cavity 102. By detachably covering the cover plate 83 at the exhaust port 112, the second radiator 81 can be easily disassembled and assembled into the heat dissipation cavity 102.

[0052] In one embodiment of the present application, please refer to Figure 4 and Figure 5 A second protective grille 113 is provided at the air inlet 111 and / or the air outlet 112 .

[0053] Optionally, the structure of the second protective grille 113 is similar to that of the first protective grille 831. In the present embodiment, the second protective grille 113 is disposed at the air inlet 111. By providing the second protective grille 113 at the air inlet 111, it is possible to effectively prevent external foreign matter from entering the heat dissipation cavity 102 without affecting the discharge of gas in the heat dissipation cavity 102, thereby ensuring the stability of heat dissipation of the second heat dissipation component 80.

[0054] In one embodiment of the present application, please refer to Figure 1 and Figure 2 , and also includes a control component 90, the control component 90 includes a control board 91, the control board 91 is arranged in the accommodating cavity 101, and the control board 91 is electrically connected to the circuit board 20.

[0055] Optionally, in this embodiment, the control board 91 and the circuit board 20 are respectively arranged on opposite sides of the first support portion 62 of the support member 60, so that the first radiator 71 is located between the control board 91 and the circuit board 20, so that the first radiator 71 can dissipate heat for the control board 91 while dissipating heat for the circuit board 20, thereby improving the heat dissipation efficiency.

[0056] In one embodiment of the present application, please refer to Figure 1 and Figure 2 The control component 90 also includes a control button 92 , which is disposed on the outer surface of the housing 10 and is electrically connected to the control board 91 .

[0057] Optionally, by setting the control button 92 on the outer surface of the housing 10, the user can directly press the control button 92 to transmit the control command from the control board 91 to the circuit board 20, and the circuit board 20 drives each electrical component to execute it.

[0058] In one embodiment of the present application, please refer to Figure 2 The housing 10 includes a shell 11 and an upper cover 12 . The accommodating cavity 101 is formed by the shell 11 and the upper cover 12 . The upper cover 12 is detachably connected to the shell 11 .

[0059] Optionally, by setting the outer shell 10 as a shell 11 and an upper cover 12, it is convenient for the user to directly install the support member 60 of the installed outer shell 10, circuit board 20, switch device 30, first filter device 40 and second filter device 50 into the installation cavity, and finally directly cover the upper cover 12 on the shell 11.

[0060] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. An integrated frequency conversion device, characterized in that: include: A housing, wherein a receiving cavity is provided in the housing; A circuit board, wherein the circuit board is arranged in the accommodating cavity; a first filter device, which is disposed in the accommodating cavity and is electrically connected to the circuit board; a second filtering device, the second filtering device being disposed in the accommodating cavity and electrically connected to the circuit board; A switch device is disposed in the accommodating cavity and electrically connected to the circuit board, and is used to control current to flow through the first filtering device and / or the second filtering device.

2. The integrated frequency conversion device according to claim 1, characterized in that: It also includes a support member, which is arranged in the accommodating cavity, and the circuit board, the switch device, the first filtering device and the second filtering device are all installed on the support member.

3. The integrated frequency conversion device according to claim 2, characterized in that: It also includes a first heat dissipation component, which includes a first heat sink. The support member is provided with a heat dissipation through hole corresponding to the circuit board, and the first heat sink is arranged in the heat dissipation through hole.

4. The integrated frequency conversion device according to claim 1, characterized in that: It also includes a second heat dissipation component. The shell is also provided with a heat dissipation cavity for dissipating heat from the circuit board. The shell is also provided with an air inlet and an exhaust port interconnected with the heat dissipation cavity. The second heat dissipation component is arranged in the heat dissipation cavity.

5. The integrated frequency conversion device according to claim 4, characterized in that: The second heat dissipation component includes a second heat sink and heat dissipation fins. The second heat sink is arranged at the air inlet or the air outlet. The heat dissipation fins are attached to the circuit board. The heat dissipation fins are used to absorb heat in the circuit board.

6. The integrated frequency conversion device according to claim 5, characterized in that: The second heat dissipation assembly further includes a cover plate, which is disposed corresponding to the second radiator and is detachably connected to the housing. A first protective grille is disposed on the cover plate.

7. The integrated frequency conversion device according to claim 5, characterized in that: A second protective grille is provided at the air inlet and / or the air outlet.

8. The integrated frequency conversion device according to claim 1, characterized in that: It also includes a control component, which includes a control board. The control board is arranged in the accommodating cavity and is electrically connected to the circuit board.

9. The integrated frequency conversion device according to claim 8, characterized in that: The control component further comprises a control button, which is arranged on the outer side of the housing and is electrically connected to the control board.

10. The integrated frequency conversion device according to claim 1, characterized in that: The housing comprises a shell and an upper cover, the accommodating cavity is formed by the shell and the upper cover, and the upper cover is detachably connected to the shell.

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