Liquid cooling power amplifier plug-in box of high-power television transmitter

Abstract

This application relates to the field of heat dissipation and structural design of electronic devices, and in particular to a liquid-cooled power amplifier enclosure for a high-power television transmitter. The enclosure includes a housing with a liquid-cooled plate dividing it into upper and lower cavities in the middle. The liquid-cooled plate has mounting slots for placing liquid-cooled pipes. A power supply module is fixed to the lower end of the liquid-cooled plate in the lower cavity. Several power amplifier boards are fixed to the upper end of the liquid-cooled plate in the upper cavity. The power amplifier boards are arranged in a straight line. The mounting slots have a serpentine meandering section below the power amplifier boards. The lower end of the liquid-cooled plate has a clearance groove. The housing is constructed from sheet metal, and the liquid-cooled plate is detachably connected. The front panel has a handle, a warning light opening, and a main power switch. The rear panel has guide pins and clearance holes for blind-mating liquid connectors. The housing also has ventilation holes and includes a power combiner, which is electrically connected in sequence. This application achieves the technical effect of optimizing the structure of the liquid-cooled power amplifier enclosure for a high-power television transmitter and effectively dissipating heat.

Description

Technical Field

[0001] This application relates to the field of heat dissipation and structural design of electronic devices, and in particular to a liquid-cooled power amplifier enclosure for a high-power television transmitter. Background Technology

[0002] In high-power television transmitters, multiple power amplifier units are typically required to combine in order to achieve high power output, and each power amplifier unit has a high output power, which leads to significant heat generation. Traditionally, air cooling is commonly used to address the heat dissipation problem of power amplifier units. Air cooling utilizes fans and other devices to circulate air and carry away heat; this method is common, technologically mature, and relatively inexpensive. Furthermore, in terms of the enclosure's structural design, previous designs often considered the layout of air ducts to ensure effective airflow and thus achieve heat dissipation.

[0003] However, air cooling has significant drawbacks. Its heat dissipation effect is relatively poor, failing to meet the cooling requirements of the large amounts of heat generated by the power amplifier units in high-power television transmitters. Furthermore, air cooling generates considerable noise during operation, affecting the working environment. Additionally, the complex design of the enclosure, requiring consideration of airflow layout, results in inefficient space utilization, leading to a large enclosure size, an unattractive appearance, and underutilization of internal space. Therefore, a solution is needed that offers efficient space utilization, strong heat dissipation capabilities, and a compact enclosure size. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a liquid-cooled power amplifier enclosure for a high-power television transmitter, which optimizes the structure of the liquid-cooled power amplifier enclosure and effectively improves the heat dissipation effect of the enclosure.

[0005] This application is achieved through the following technical solution: A liquid-cooled power amplifier enclosure for a high-power television transmitter includes an enclosure housing, in which a power supply module and several power amplifier boards are installed. A liquid cooling plate is provided in the middle of the enclosure housing, dividing the enclosure housing from top to bottom into an upper cavity and a lower cavity. The upper part of the liquid cooling plate is provided with a mounting groove for placing liquid cooling pipes. The power supply module is fixed at the lower end of the liquid cooling plate and placed in the lower cavity. Several power amplifier boards are fixed at the upper end of the liquid cooling plate and placed in the upper cavity.

[0006] By adopting the above technical solutions, the overall height of the cabinet is reduced, which can effectively reduce the overall height of the cabinet and meet the high power output requirements of the TV transmitter; the liquid cooling method has good heat dissipation effect, low noise, more beautiful appearance, and more efficient use of internal space; the liquid cooling plate separates the upper and lower housing cavities, allowing for the rational arrangement of electrical components and facilitating heat dissipation; the mounting slots on the liquid cooling plate can hold liquid cooling pipes for effective heat dissipation of electrical components.

[0007] Optionally, several of the power amplifier boards are arranged in a straight line on the liquid cooling plate, and the mounting groove includes a serpentine meandering section, which is located below the power amplifier board.

[0008] By adopting the above technical solution, the power amplifier board is arranged in a straight line on the liquid cooling plate, which makes the layout more regular. The serpentine meandering part of the mounting slot is located below the power amplifier board, which can increase the contact area between the liquid cooling pipe and the power amplifier board, reduce the liquid flow resistance, and effectively and reasonably dissipate heat from the power amplifier board to meet the heat dissipation requirements for normal operation of the TV transmitter.

[0009] Optionally, the lower end of the liquid cooling plate is provided with a clearance groove for wires to pass through.

[0010] By adopting the above technical solution, a clearance groove for wires to pass through is set at the lower end of the liquid cooling plate, which allows the wires to pass through the liquid cooling plate in a reasonable manner, avoiding mutual interference between the wires and the liquid cooling plate and other components, making the wiring inside the socket more reasonable and orderly, and further improving the utilization efficiency of the internal space of the socket. At the same time, the combination of the liquid cooling plate to divide the cabinet into upper and lower accommodating cavities, with the power amplifier board and power supply module respectively set in the upper and lower accommodating cavities, and the installation groove on the liquid cooling plate to place the liquid cooling pipes, can achieve the orderly arrangement of wires while ensuring the reasonable layout and good heat dissipation of the socket, and ensure the normal operation of the electrical components inside the socket.

[0011] Optionally, the enclosure is assembled from sheet metal, including a bottom plate and a cover plate arranged in parallel vertically; the bottom plate and the cover plate are connected on both sides by parallel side plates, and the front end and the rear end of the bottom plate and the cover plate are respectively provided with a front panel and a rear panel; the liquid cooling plate is detachably connected to the enclosure.

[0012] By adopting the above technical solution, the enclosure is made of spliced ​​plates, including a bottom plate, cover plate, side plates, front panel and rear panel arranged in parallel. The liquid cooling plate is detachably connected to the enclosure. The splicing method of the plates facilitates the manufacturing process, and the detachable connection of the liquid cooling plate makes the enclosure easy to disassemble during maintenance. At the same time, this structural design can effectively and tightly house and protect the components required by the relevant power amplifier units. It also reduces the overall weight while ensuring the overall structural strength of the enclosure and can effectively reduce the volume of the enclosure. When multiple power amplifier unit enclosures are installed in the cabinet, the overall height of the cabinet can be reduced to meet the high power output requirements of the TV transmitter.

[0013] Optionally, handles are provided on both sides of the front panel.

[0014] By adopting the above technical solution, a liquid cooling plate is set in the middle of the insertion box to divide the box into an upper and lower receiving cavity. The power amplifier board and the power supply module are respectively set in the upper and lower receiving cavities. Combined with the design of handles on both sides of the front panel, it is convenient to insert and remove the entire insertion box. At the same time, the liquid cooling plate can dissipate heat from the power amplifier board and other components to ensure the normal and stable operation of the transmitter.

[0015] Optionally, the front panel is provided with a warning light opening and a main power switch opening.

[0016] By adopting the above technical solution, the warning light opening facilitates the installation of warning lights, which can promptly indicate the working status of the equipment; the main power switch opening facilitates the installation of the main power switch, making it easy to control the power supply of the plug-in box; combined with the structure of the box being spliced ​​from sheet metal, the liquid cooling plate being detachably connected to the box, and the liquid cooling plate separating the receiving cavity in the middle of the box, with the power supply module and power amplifier board placed in their respective receiving cavities, the overall structure of the plug-in box is reasonable. It can effectively protect and dissipate heat from related electrical components while ensuring normal operation, meeting the usage requirements of high-power TV transmitter power amplifier units.

[0017] Optionally, the rear panel is provided with guide positioning pins for connecting to external devices.

[0018] By adopting the above technical solution, the guide positioning pin can accurately, smoothly and quickly insert and remove the plug-in box on the cabinet, ensuring the stability and accuracy of the equipment connection, and can also achieve rapid positioning during equipment installation, improving installation efficiency.

[0019] Optionally, both the inlet and outlet ends of the liquid cooling pipe are equipped with blind-mating liquid connectors; the rear panel is provided with clearance holes adapted to the blind-mating liquid connectors.

[0020] By adopting the above technical solution, blind-mating liquid connectors are installed at the inlet and outlet ends of the liquid cooling pipes, and corresponding clearance holes are provided on the rear panel. This allows for smooth and rapid insertion and removal of the enclosure on the rack, ensuring concentric alignment between the fluid connector and the corresponding female socket. This prevents connector misalignment during installation, thus avoiding damage and ensuring a safe and precise connection. Furthermore, the structure, with a liquid cooling plate separating the upper and lower housing chambers in the middle of the enclosure, the power amplifier board and power supply module respectively housed within these chambers, and mounting slots on the liquid cooling plate for the liquid cooling pipes, effectively dissipates heat from the electrical components within the enclosure, meeting the requirements for normal and stable operation of the power amplifier unit in a high-power television transmitter.

[0021] Optionally, the housing is provided with heat dissipation holes.

[0022] By adopting the above technical solutions, heat dissipation inside the amplifier enclosure can be effectively promoted, the heat dissipation capacity of the enclosure can be enhanced, and the normal operation of the electrical components inside the amplifier enclosure can be guaranteed.

[0023] Optionally, it also includes a power combiner, a circulator, and a beryllium oxide resistor fixed to the upper end of the liquid cooling plate, wherein the power amplifier board, the power combiner, the circulator, and the beryllium oxide resistor are electrically connected in sequence via wires.

[0024] By adopting the above technical solution, a power combiner, a circulator, and a beryllium oxide resistor are installed on the upper end of the liquid cooling plate, and the power amplifier board, power combiner, circulator, and beryllium oxide resistor are electrically connected in sequence. This makes the circuit connection of the power amplifier unit more reasonable, facilitates signal transmission and processing, and effectively addresses the power reflection problem when the power amplifier unit fails, ensuring the stable operation of the power amplifier enclosure.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Compared with ordinary power amplifier unit cabinets, the volume of this application is significantly reduced, which can tightly and reasonably install and protect the components required by the relevant power amplifier unit. When multiple cabinets are installed in the cabinet, the overall height of the cabinet can be reduced to meet the high power output requirements of the TV transmitter. 2. This application uses liquid cooling for heat dissipation. The liquid cooling pipeline path can effectively and reasonably dissipate heat from the internal electrical components of the socket. The heat dissipation effect is about four times that of air cooling. The operating noise is lower. The socket structure design does not need to consider the air duct layout. The appearance is more beautiful and the internal space is more fully utilized. 3. The rear panel of this application uses guide positioning pins and blind-mating liquid connectors, which can accurately and quickly insert and remove the enclosure on the rack. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the liquid-cooled power amplifier enclosure of the high-power television transmitter described in the embodiment; Figure 2 This is a schematic diagram of the arrangement structure of the power amplifier board and the liquid cooling plate described in the embodiment; Figure 3 This is a schematic diagram of the arrangement structure of the power supply module and the liquid cooling plate described in the embodiment; Figure 4 This is a schematic diagram of the arrangement structure of the liquid cooling pipes described in the embodiment; Figure 5 This is a schematic diagram of the upper end of the liquid cooling plate described in the embodiment; Figure 6 This is a schematic diagram of the structure of the lower end of the liquid cooling plate described in the embodiment.

[0027] In the diagram: 1. Enclosure; 11. Base plate; 12. Cover plate; 13. Side plate; 14. Front panel; 141. Handle; 142. Warning light opening; 143. Main power switch port; 15. Rear panel; 151. Clearance hole; 152. Heat dissipation hole; 153. Guide positioning pin; 16. Upper receiving cavity; 17. Lower receiving cavity; 2. Liquid cooling plate; 21. Mounting slot; 211. Serpentine meandering section; 22. Clearance slot; 3. Liquid cooling pipe; 31. Blind-fit liquid connector; 4. Power supply module; 5. Power amplifier board; 6. Power combiner; 7. Circulator; 8. Beryllium oxide resistor. Detailed Implementation

[0028] The following will be combined with the appendix Figures 1 to 6 The technical solutions of the various embodiments of this application have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] Reference Figures 1 to 3 This application discloses a liquid-cooled power amplifier enclosure for a high-power television transmitter, including an enclosure 1. A power supply module 4 and several power amplifier boards 5 are installed in the enclosure 1. A liquid cooling plate 2 is provided in the middle of the enclosure 1. The liquid cooling plate 2 divides the enclosure 1 from top to bottom into an upper receiving cavity 16 and a lower receiving cavity 17. The upper part of the liquid cooling plate 2 is provided with a mounting groove 21 for placing liquid cooling pipes 3. The power supply module 4 is fixed at the lower end of the liquid cooling plate 2 and placed in the lower receiving cavity 17. Several power amplifier boards 5 are fixed at the upper end of the liquid cooling plate 2 and placed in the upper receiving cavity 16.

[0030] Specifically, refer to Figures 1 to 3 The enclosure 1 is constructed from sheet metal, including a bottom plate 11 and a cover plate 12 arranged vertically in parallel. The bottom plate 11 and the cover plate 12 are connected on both sides by parallel side plates 13, and the front and rear ends of the bottom plate 11 and the cover plate 12 are respectively provided with a front panel 14 and a rear panel 15. The bottom plate 11, the cover plate 12, the side plates 13, the front panel 14, and the rear panel 15 are generally made of sheet metal. This material can reduce the overall weight while ensuring the overall structural strength of the enclosure 1. For example, sheet metal made of aluminum alloy is used, which has the characteristics of light weight, high strength, and corrosion resistance. The front panel 14 and the rear panel 15 can be connected and fixed to the bottom plate 11, the cover plate 12, and the side plates 13 by screws. This connection method is simple and reliable, and facilitates disassembly and maintenance.

[0031] Reference Figures 1 to 3The front panel 14 has handles 141 on both sides. The handles 141 are generally made of plastic or metal, such as stainless steel, and are sturdy and durable. The handles 141 are fixed to the front panel 14 by bolts or welding, making it convenient for operators to plug and unplug the plug box. The front panel 14 has a warning light opening 142 and a main power switch opening 143. The warning light opening 142 is used to install a warning light. When the plug box malfunctions or has an abnormal situation, the warning light will light up to remind the operator. The main power switch opening 143 is used to install a main power switch, which is convenient for controlling the power supply of the plug box.

[0032] Reference Figures 1 to 3 The enclosure 1 is provided with heat dissipation holes 152, which are located in the lower middle of the rear panel 15. This can effectively promote the heat dissipation of the power supply module 4 and other modules with relatively low heat in the lower layer of the enclosure.

[0033] Reference Figures 1 to 3 The power supply module 4 is fixed at the lower end of the liquid cooling plate 2 and placed in the lower receiving cavity 17. The power supply module 4 can be fixed on the liquid cooling plate 2 by brackets or bolts to provide power support for the electrical components in the plug box.

[0034] Reference Figures 1 to 3 Several power amplifier boards 5 are fixed to the upper end of the liquid cooling plate 2 and placed in the upper receiving cavity 16. The power amplifier boards 5 are arranged in a straight line on the liquid cooling plate 2, and each power amplifier board 5 is fixed to the liquid cooling plate 2 by screws or clips. The power amplifier boards 5 are the main heat source of the power amplifier unit. In this embodiment, each power amplifier board 5 has a heat output of 200W. The power amplifier enclosure consists of six power amplifier boards 5 arranged closely and vertically. The liquid cooling method can meet the heat dissipation requirements of approximately 1200W of heat from these six final stage power amplifier boards 5.

[0035] Reference Figures 1 to 3 The power combiner 6, circulator 7, and beryllium oxide resistor 8 are also fixed on the upper end of the liquid cooling plate 2. The power amplifier board 5, power combiner 6, circulator 7, and beryllium oxide resistor 8 are electrically connected in sequence through wires. The power combiner 6 combines the power output from multiple power amplifier boards 5. The circulator 7 is used to control the direction of signal transmission. The beryllium oxide resistor 8 is used to absorb reflected power. Its main function is that in the event of a fault, the power is reflected by the circulator 7 to the beryllium oxide resistor 8 for absorption. The liquid cooling pipe 3 passes through these devices to carry away the heat they generate.

[0036] Reference Figure 3 and Figure 5 The liquid cooling plate 2 is detachably connected to the housing 1, for example by bolts, so that it is easy to disassemble during maintenance; the liquid cooling plate 2 is provided with a mounting groove 21 for placing the liquid cooling pipe 3, and the mounting groove 21 can be processed by milling or stamping.

[0037] Reference Figures 3 to 5 The rear panel 15 is provided with a clearance hole 151 adapted to the blind-mating liquid connector 31. The blind-mating liquid connector 31 is installed at the inlet and outlet of the liquid cooling pipe 3. When the plug box is inserted into the cabinet, the blind-mating liquid connector 31 can be concentrically connected with the corresponding female socket on the cabinet to ensure the flow of liquid. The shape and size of the clearance hole 151 match the blind-mating liquid connector 31 to ensure that the blind-mating liquid connector 31 can pass smoothly through the clearance hole 151. The rear panel 15 is also provided with a guide positioning pin 153 for plugging into external equipment. The guide positioning pin 153 can be cylindrical or conical and is fixed to the front panel 14 by interference fit or threaded connection, which can accurately and quickly plug and unplug the plug box on the cabinet.

[0038] Reference Figures 4 to 6 The mounting slot 21 includes a serpentine meandering section 211, which is located below the power amplifier board 5. This design increases the contact area between the liquid cooling pipe 3 and the power amplifier board 5, improving heat dissipation. The lower end of the liquid cooling plate 2 is provided with a clearance groove 22 for wires to pass through. The clearance groove 22 can reduce interference between the wires and the liquid cooling plate 2, making the wiring more reasonable. In addition, at the lower end of the liquid cooling plate 2, to address the problem of some components being too tall and the wiring being messy, corresponding grooves are machined on the surface where there is no path for the liquid cooling pipe 3, making more reasonable use of the thickness of the liquid cooling plate 2, thereby achieving a weight reduction effect.

[0039] The implementation principle of this embodiment is as follows: The liquid-cooled power amplifier enclosure divides the enclosure 1 into upper and lower cavities through the liquid cooling plate 2, and rationally arranges electrical components with different heat generation levels, so that the main heat source is concentrated in the upper cavity 16, which facilitates targeted heat dissipation by the liquid cooling pipe 3; the mounting groove 21 and the serpentine meandering part 211 on the liquid cooling plate 2 increase the contact area between the liquid cooling pipe 3 and heat sources such as the power amplifier board 5, thereby improving heat dissipation efficiency; at the same time, the guide positioning pin 153 on the front panel 14 and the blind-plug liquid connector 31 on the rear panel 15 facilitate quick insertion and removal of the enclosure, and ensure the accuracy and stability of the connection; in addition, the enclosure 1 uses sheet metal parts to reduce weight, and the setting of the heat dissipation hole 152 promotes heat dissipation of the lower layer. The overall structure is compact, the space is rationally utilized, and the heat dissipation capacity is strong. Compared with traditional enclosures, it is smaller in size and can meet the requirements of normal and stable power output of the power amplifier unit in a high-power TV transmitter.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A liquid-cooled power amplifier enclosure for a high-power television transmitter, comprising an enclosure (1), wherein a power supply module (4) and several power amplifier boards (5) are installed in the enclosure (1), characterized in that, The box (1) is provided with a liquid cooling plate (2) in the middle. The liquid cooling plate (2) divides the box (1) into an upper cavity (16) and a lower cavity (17) from top to bottom. The liquid cooling plate (2) is provided with an installation groove (21) for placing the liquid cooling pipe (3) on its upper surface. The power supply module (4) is fixed at the lower end of the liquid cooling plate (2) and placed in the lower cavity (17). Several power amplifier boards (5) are fixed at the upper end of the liquid cooling plate (2) and placed in the upper cavity (16).

2. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 1, characterized in that, Several of the power amplifier boards (5) are arranged in a straight line on the liquid cooling plate (2), and the mounting groove (21) includes a serpentine meandering part (211), which is located below the power amplifier board (5).

3. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 1, characterized in that, The lower end of the liquid cooling plate (2) is provided with a clearance groove (22) for wires to pass through.

4. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 1, characterized in that, The box (1) is made of spliced ​​plates, including a bottom plate (11) and a cover plate (12) arranged in parallel in a vertical direction; the bottom plate (11) and the cover plate (12) are connected on both sides by side plates (13) arranged in parallel, and the front end and the rear end of the bottom plate (11) and the cover plate (12) are respectively provided with a front panel (14) and a rear panel (15); the liquid cooling plate (2) is detachably connected to the box (1).

5. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 4, characterized in that, The front panel (14) is provided with handles (141) on both sides.

6. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 4, characterized in that, The front panel (14) is provided with a warning light opening (142) and a main power switch opening (143).

7. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 4, characterized in that, The rear panel (15) is provided with guide positioning pins (153) for connecting to external devices.

8. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 4, characterized in that, The liquid cooling pipe (3) is equipped with a blind-plug liquid connector (31) at both the inlet and outlet ends; the rear panel (15) is equipped with a clearance hole (151) that is compatible with the blind-plug liquid connector (31).

9. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 1, characterized in that, The housing (1) is provided with heat dissipation holes (152).

10. The liquid-cooled power amplifier enclosure for a high-power television transmitter according to claim 1, characterized in that, It also includes a power combiner (6), a circulator (7) and a beryllium oxide resistor (8) fixed on the upper end of the liquid cooling plate (2). The power amplifier board (5), the power combiner (6), the circulator (7) and the beryllium oxide resistor (8) are electrically connected in sequence through wires.

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