Heat dissipation structure of train vehicle air conditioner control equipment

Abstract

The utility model discloses a heat dissipation structure of train vehicle air conditioner control equipment, which relates to the technical field of rail transit and comprises a box body, a fan fixing box, an alternating current device contact module and a heat dissipation fan. The box body is provided with a containing cavity with an opening in the top, the fan fixing box covers the opening of the containing cavity, an air outlet is formed in the fan fixing box, the multiple cooling fans are installed in the fan fixing box, and hot air in the containing cavity is exhausted through the cooling fans; a plurality of alternating current contactor modules are arranged in the accommodating cavity of the box body side by side, each alternating current contactor module comprises a board card fixed in the accommodating cavity along the vertical direction, and each board card is provided with a radiator; the beneficial effects of the utility model are that the heat accumulated in the AC contactor module can be reduced, the service life is prolonged, the working efficiency of the AC contactor module is improved, and the long-term stable work of the AC contactor module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, and more particularly to a heat dissipation structure of an air-conditioning control device for a train vehicle. Background Art

[0002] With the expansion of urban populations and the improvement of people's living standards, higher demands are being placed on travel. Rail transit vehicles are playing an increasingly important role in people's travel. Ensuring the stable and reliable operation of these vehicles requires the support of a large number of complex control devices.

[0003] As we all know, traditional vehicle air conditioning control systems have relatively simple principles and structures, mature applications, low technical requirements for maintenance personnel, and some faults can be easily detected with the naked eye. The system is also relatively affordable. Therefore, even the most advanced microcomputer-controlled circuits still utilize some traditional relay and contactor control circuits. However, relay and contactor control methods have their inherent flaws. In addition, vehicle operation tests have shown that when locomotive speeds reach 160 km / h or higher, locomotive vibration intensifies, increasing the vibration of relay and contactor contacts. This significantly increases the risk of control circuit malfunctions, and has even resulted in vehicle failures.

[0004] Trains typically operate in harsh environments characterized by high temperatures, high humidity, high dust levels, and severe vibrations. In some areas, these conditions also include acid rain and salt spray. These adverse conditions directly impact the lifespan of electrical components. As operating time increases, train control relays and contactors can become stuck, coils disconnect, and unstable contact resistance values can occur. These relay and contactor failures increase train failure rates and reduce train safety, severely impacting the quality of mainline service.

[0005] The intelligent air-conditioning control panel uses computer programmable logic control software technology to realize the logical control relationship of the vehicle air-conditioning equipment. Combined with modern power electronic input and output control technology, the design realizes the contactless vehicle control signal, replacing the control relays, high-current contactors and other electrical devices in the original control circuits on the train. To replace the high-current contactors, thyristors are needed to replace the high-current contactors.

[0006] At present, the train's intelligent air-conditioning controller adopts a modular design, in which the AC contactor module uses thyristors instead of traditional contactors, and the wiring is connected through printed circuit boards instead of manual wiring in electrical cabinets, which greatly reduces the complexity of traditional relay control circuit wiring, reduces errors in wiring, improves efficiency, reduces failure rate, and saves costs.

[0007] However, when the thyristor works for a long time, due to a large number of electrons flowing inside the thyristor, if it works for a long time and the device has poor heat dissipation, heat accumulation will cause overheating, affecting the operating stability. Therefore, when designing a control device using thyristors, it is necessary to focus on designing a heat dissipation solution for the device, which is also a pain point that needs to be solved in the current industrial application of thyristor device design. Summary of the Invention

[0008] In order to overcome the deficiencies of the prior art, the present invention provides a heat dissipation structure for a train vehicle air-conditioning control device, which can reduce the heat accumulated inside the box body and improve the heat dissipation efficiency.

[0009] The technical solution adopted by the present invention to solve its technical problems is: a heat dissipation structure for a train vehicle air-conditioning control device, which is improved in that it includes a box body, a fan fixing box, an AC contact module, and a heat dissipation fan;

[0010] The box body has a cavity with an opening at the top. The fan fixing box covers the opening of the cavity. An air outlet is provided on the fan fixing box. A plurality of the heat dissipation fans are installed inside the fan fixing box, and the hot air inside the cavity is discharged through the heat dissipation fans;

[0011] A plurality of AC contactor modules are arranged side by side in the cavity of the box body. Each AC contactor module includes a board fixed in the cavity along the vertical direction, and a radiator is installed on each board.

[0012] In the above structure, the box body includes a rear back plate and side sealing plates oppositely arranged at both ends of the rear back plate. A plurality of the AC contactors are arranged side by side between the two side sealing plates.

[0013] In the above structure, a plug socket, a connector, and a display panel are arranged below the plurality of AC contactor modules.

[0014] In the above structure, the box body further includes a first front cross beam, a second front cross beam, a third front cross beam, a first rear cross beam, a second rear cross beam, and a third rear cross beam; the first front cross beam, the second front cross beam, and the third front cross beam are arranged in sequence along the vertical direction, and the first rear cross beam, the second rear cross beam, and the third rear cross beam are arranged side by side along the vertical direction;

[0015] A plurality of the AC contactor modules are arranged in the space enclosed by the first front cross beam, the second front cross beam, the first rear cross beam, and the second rear cross beam; the plug socket, the connector, and the display panel are arranged in the space enclosed by the second front cross beam, the second rear cross beam, the third front cross beam, and the third rear cross beam.

[0016] In the above structure, a board card fixing frame is arranged inside the rear backboard, and one ends of multiple said board cards are fixedly installed on the board card fixing frame.

[0017] In the above structure, pressure-resistant insulating films are arranged inside both the rear backboard and the side sealing board.

[0018] In the above structure, the air outlet on the fan fixing box is annular, and three annular air outlets are arranged side by side; three heat dissipation fans are arranged side by side inside the fan fixing box.

[0019] In the above structure, a plurality of fixing columns are arranged inside the fan fixing box, and the heat dissipation fans are fixedly installed at the bottom ends of the fixing columns.

[0020] The beneficial effects of the present invention are as follows: By combining active heat dissipation and passive heat dissipation, the efficiency of heat dissipation inside the box body is improved, the heat accumulated inside the AC contactor module can be reduced, the service life can be prolonged, the working efficiency of the AC contactor module can be improved, and its long-term stable operation can be ensured. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structure schematic diagram of a heat dissipation structure of an air-conditioning control device for train vehicles of the present utility model.

[0022] Figure 2 It is a first exploded schematic diagram of a heat dissipation structure of an air-conditioning control device for train vehicles of the present utility model.

[0023] Figure 3 It is a second exploded schematic diagram of a heat dissipation structure of an air-conditioning control device for train vehicles of the present utility model.

[0024] Figure 4 It is an internal structure schematic diagram of a heat dissipation structure of an air-conditioning control device for train vehicles of the present utility model. In the figure: box body 10, rear backboard 101, side sealing board 102, socket 103, connector 104, display panel 105, pressure-resistant insulating film 106, first front cross beam 107, first rear cross beam 108, second rear cross beam 109, third rear cross beam 110, board card fixing frame 111, bottom sealing board 112, fan fixing box 20, air outlet 201, fixing column 202, AC contact module 30, heat dissipation fan 40, AC contactor module 50, board card 501, radiator 60. Detailed Embodiments

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components alone, but refer to the composition of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. The various technical features in the present invention can be combined interactively on the premise of not conflicting with each other.

[0027] Referring to Figures 1 to 4 As shown, the present utility model provides a heat dissipation structure for an air-conditioning control device of a train vehicle, including a box body 10, a fan fixing box 20, an AC contact module 30 and a heat dissipation fan 40; wherein, the box body 10 is in a cuboid shape, the box body 10 has a cavity with an opening at the top, the fan fixing box 20 covers the opening of the cavity, and the size of the fan fixing box 20 matches the size of the box body 10, and the fixed connection between the two is realized by locking in screws. An air outlet 201 is provided on the fan fixing box 20. In this embodiment, the air outlet 201 is annular, and three annular air outlets 201 are arranged side by side; three heat dissipation fans 40 are arranged side by side in the fan fixing box 20, and the positions of the heat dissipation fans 40 correspond to the positions of the air outlets 201, and the hot air inside the cavity is discharged through the heat dissipation fans 40.

[0028] In this embodiment, for the fixing form of the heat dissipation fan 40, a specific embodiment is provided. Referring to Figure 3 As shown, a plurality of downwardly extending fixing posts 202 are provided on the bottom surface of the fan fixing box 20, fixing holes are provided at corresponding positions on the heat dissipation fan 40, the fixing posts 202 pass through the fixing holes, and nuts are threadedly connected to the bottom ends of the fixing posts 202 to realize the fixed installation of the heat dissipation fan 40. In this way, the heat dissipation fan 40 is as close as possible to the annular air outlet 201, which is beneficial to discharging the heat in the box body 10.

[0029] Continuing to refer to Figures 1 to 4 As shown, a plurality of AC contactor modules 50 are arranged side by side in the cavity of the box body 10. Each AC contactor module 50 includes a board 501 fixed in the cavity in the vertical direction, and a radiator 60 is installed on each board 501. In this embodiment, a total of 16 AC contactor modules 50 are arranged side by side in the box body 10, and the AC contactor module 50 is a thyristor module. As Figure 4As shown, 16 boards 501 are arranged vertically in the cavity of the box body 10, and the gaps reserved between adjacent boards 501 are used to install the radiator 60. Specifically, the radiator 60 is a fin-type radiator, which improves the heat dissipation efficiency of the board 501 by increasing the contact area with air. This heat dissipation method belongs to passive heat dissipation. The heat dissipation form of the above-mentioned cooling fan 40 belongs to active heat dissipation. In this embodiment, by combining active heat dissipation and passive heat dissipation, the efficiency of heat dissipation in the box body 10 is further improved, the heat accumulated inside the AC contactor module 50 can be reduced, the service life can be prolonged, the working efficiency of the AC contactor module 50 can be improved, and its long-term stable operation can be ensured.

[0030] For the specific structure of the box body 10, in combination with Figure 2 、 Figure 4 As shown, the present utility model provides a specific embodiment. The box body 10 includes a rear back plate 101, a bottom sealing plate 112, and side sealing plates 102 oppositely arranged at both ends of the rear back plate 101. A plurality of the AC contactors are arranged side by side between the two side sealing plates 102. A socket 103, a connector 104, and a display panel 105 are arranged below the plurality of AC contactor modules 50. Pressure-resistant insulating films 106 are arranged inside both the rear back plate 101 and the side sealing plates 102. In addition, the box body 10 further has a support structure, which includes a first front cross beam 107, a second front cross beam (not marked in the figure), a third front cross beam (not marked in the figure), a first rear cross beam 108, a second rear cross beam 109, and a third rear cross beam 110. The first front cross beam 107, the second front cross beam, and the third front cross beam are arranged in sequence vertically. The first rear cross beam 108, the second rear cross beam 109, and the third rear cross beam 110 are arranged side by side vertically. A plurality of the AC contactor modules 50 are arranged in the space enclosed by the first front cross beam 107, the second front cross beam, the first rear cross beam 108, and the second rear cross beam 109. The socket 103, the connector 104, and the display panel 105 are arranged in the space enclosed by the second front cross beam, the second rear cross beam 109, the third front cross beam, and the third rear cross beam 110. The first front cross beam 107, the second front cross beam, the third front cross beam, the first rear cross beam 108, the second rear cross beam 109, and the third rear cross beam 110 are all made of aluminum profiles. When forming the box body 10, there are also components such as vertical beams. For their specific connection methods, no more detailed explanations and descriptions are given in this embodiment. A board fixing frame 111 is arranged inside the rear back plate 101, and one ends of the plurality of boards 501 are fixedly installed on the board fixing frame 111.

[0031] The above is a specific description of the preferred embodiment of the present invention. However, the present invention is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A heat dissipation structure of an air conditioning control device for a train vehicle, characterized in that, It includes a box body, a fan fixing box, an AC contact module, and a cooling fan; The box body has a cavity with an opening at the top. The fan fixing box covers the opening of the cavity. An air outlet is provided on the fan fixing box. A plurality of the cooling fans are installed inside the fan fixing box, and the hot air inside the cavity is discharged through the cooling fans; A plurality of AC contactor modules are arranged side by side in the cavity of the box body. Each AC contactor module includes a board fixed in the cavity in the vertical direction, and a radiator is installed on each board.

2. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 1, characterized in that, The box body includes a rear back plate and side sealing plates oppositely arranged at both ends of the rear back plate. A plurality of the AC contactors are arranged side by side between the two side sealing plates.

3. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 2, characterized in that, A socket, a connector, and a display panel are arranged below the plurality of AC contactor modules.

4. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 3, characterized in that, The box body further includes a first front cross beam, a second front cross beam, a third front cross beam, a first rear cross beam, a second rear cross beam, and a third rear cross beam; the first front cross beam, the second front cross beam, and the third front cross beam are arranged in sequence in the vertical direction, and the first rear cross beam, the second rear cross beam, and the third rear cross beam are arranged side by side in the vertical direction; A plurality of the AC contactor modules are arranged in the space enclosed by the first front cross beam, the second front cross beam, the first rear cross beam, and the second rear cross beam; the socket, the connector, and the display panel are arranged in the space enclosed by the second front cross beam, the second rear cross beam, the third front cross beam, and the third rear cross beam.

5. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 2, characterized in that, A board fixing frame is arranged inside the rear back plate, and one end of each of the plurality of boards is fixedly installed on the board fixing frame.

6. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 2, characterized in that, A voltage-resistant insulating film is arranged inside both the rear back plate and the side sealing plates.

7. The heat dissipation structure of an air conditioning control device for a train vehicle according to claim 1, characterized in that, The air outlets on the fan fixing box are annular, and three annular air outlets are arranged side by side; three cooling fans are arranged side by side inside the fan fixing box.

8. The heat dissipation structure of an air-conditioning control device for a train vehicle according to claim 7, characterized in that, A plurality of fixing columns are arranged inside the fan fixing box, and the cooling fans are fixedly installed at the bottom ends of the fixing columns.

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