Multi-channel current type power amplifier device

Abstract

The invention relates to a multi-channel current type power amplifier device, and relates to the field of power amplifier installation equipment, the multi-channel current type power amplifier device comprises a power amplifier shell, a middle partition assembly is horizontally arranged in the power amplifier shell, a power amplifier assembly is vertically arranged above the middle partition assembly, one side of the power amplifier assembly is provided with a power supply assembly, and the other side of the power amplifier assembly is provided with a power supply module. A mounting assembly is arranged at the bottom end of the power amplifier shell, and a damping structure is arranged between the mounting assembly and the power amplifier shell. The multi-channel power amplifier has the advantages that modular design is adopted, independent control and work of the multi-channel power amplifier can be achieved, when any channel breaks down, the multi-channel power amplifier can rapidly and automatically exit from the working state, and it is guaranteed that work of other channels is not affected.

Description

Technical Field

[0001] The present application relates to the field of power amplifier installation equipment, and in particular to a multi-channel current-type power amplifier device. Background Art

[0002] A power amplifier (PA) is an electronic device used to increase the power of an input signal. It is usually used in audio, radio frequency and other signal processing applications. Its working principle is to generate maximum power output to drive the load under a given distortion rate, thereby amplifying the input signal. Power amplifiers are mainly divided into two types: voltage-type PAs and current-type PAs.

[0003] A current-mode amplifier is a power amplifier based on current instructions. Its working principle is to provide the required current to the load according to the current instruction. In this amplifier, the magnitude and direction of the output current are controlled by the input current instruction, so it is essentially a controlled current source. Current-mode amplifiers are usually used in applications that require precise control of current, such as driving inductive loads or where high current stability is required.

[0004] One of the advantages of current-mode amplifiers is that they respond quickly to load changes and can adjust the output current in a short time to adapt to load changes. This makes current-mode amplifiers advantageous in some applications that require high dynamic response. In addition, its current demand for the load will not be affected by changes in load impedance, so it exhibits better stability when driving inductive loads or loads with large impedance.

[0005] With respect to the above-mentioned related technologies, the inventors believe that the existing current-type power amplifier has a single structure and lacks a modular design, which is not convenient for device function expansion and cannot adapt to application scenarios where multi-channel power amplifiers work independently. Summary of the invention

[0006] In order to adopt a modular design, a multi-channel power amplifier can achieve independent control and operation, and can quickly and automatically exit the working state when any channel fails to ensure that the operation of other channels is not affected. The present application provides a multi-channel current-type power amplifier device.

[0007] The present application provides a multi-channel current-type power amplifier device, which adopts the following technical solution:

[0008] A multi-channel current-type power amplifier device comprises a power amplifier housing, a partition component is horizontally arranged inside the power amplifier housing, a power amplifier component is vertically arranged above the partition component, a power supply component is arranged on one side of the power amplifier component, a mounting component is arranged at the bottom end of the power amplifier housing, and a shock absorbing structure is arranged between the mounting component and the power amplifier housing.

[0009] Optionally, the power amplifier housing includes relatively arranged side panels, the top end of the side panels is fixedly connected to the top panel, the bottom wall of the side panels is fixedly connected to the connector wall panel, a connecting plate is vertically arranged on one side of the side panel, the connecting plate is connected to the shock absorbing structure, and the side of the side panel facing away from the connecting plate is fixedly connected to the front wall panel.

[0010] Optionally, a top ventilation waveguide window is provided on the top plate, a connector ventilation waveguide window is provided on the connector wall plate, a fan is fixedly connected to the partition assembly, and an air outlet direction of the fan is toward the top ventilation waveguide window.

[0011] Optionally, a baffle is disposed on the top plate relative to the top ventilation waveguide window, and a gap is left between the bottom wall of the baffle and the top wall of the top ventilation waveguide window for ventilation.

[0012] Optionally, a plurality of reserved fan mounting portions are provided on the partition assembly, and the reserved fan mounting portions are fixedly connected to the fans. A plurality of fans are provided, and the number of the fans is no more than the number of the reserved fan mounting portions.

[0013] Optionally, a connector component is disposed on the connector wall plate, and a recess is disposed on the connector wall plate relative to the connector component, and a connection end of the connector component is located inside the recess.

[0014] Optionally, a PCB board is fixedly connected to the inner side wall of the front wall plate, and a guide hole is opened at the bottom of the front wall plate.

[0015] Optionally, the side panels are provided with handles, and the handles on the opposite plug boards are arranged opposite to each other.

[0016] Optionally, the mounting assembly includes a mounting plate, the mounting plate is arranged parallel to the connecting plate, one end of the shock absorbing structure is fixed to the mounting plate, and the other end of the shock absorbing structure is fixed to the connecting plate.

[0017] Optionally, the shock absorbing structure includes a shock absorber, which is fixed to the mounting plate, and a shock absorbing plate is fixedly connected to a side of the shock absorber close to the connecting plate, and the shock absorbing plate is fixedly connected to the connecting plate.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. This application adopts modular design in structure and electricity. Multi-channel power amplifiers can realize independent control and operation. When any channel fails, it can quickly and automatically exit the working state to ensure that the operation of other channels is not affected, which greatly improves the versatility, maintainability and scalability of the device.

[0020] 2. The independent parts splicing design adopted in the structural design of this application and the standardized design also ensure the universality and interchangeability of parts and components, which not only ensures the reliability and maintainability of the equipment but also reduces the processing difficulty and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the internal structure of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0023] Figure 3 It is a structural schematic diagram of a fan of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0024] Figure 4 It is a structural schematic diagram of a connector wall plate of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0025] Figure 5 It is a structural schematic diagram of a top plate of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0026] Figure 6 It is a structural schematic diagram of a front wall panel of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0027] Figure 7 It is a structural schematic diagram of a damping structure of a multi-channel current-type power amplifier device in an embodiment of the present application.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. Amplifier housing; 11. Side panel; 12. Connecting plate; 13. Front wall panel; 14. Top panel; 141. Top ventilation waveguide window; 142. Baffle; 15. Connector wall panel; 151. Connector ventilation waveguide window; 2. Mounting assembly; 21. Mounting plate; 3. Shock-absorbing structure; 31. Shock absorber; 32. Shock-absorbing sheet; 4. Partition assembly; 41. Partition board; 42. Reserved fan installation portion; 5. Power supply assembly; 6. Amplifier assembly; 7. Fan; 71. Power supply fan; 72. Amplifier fan. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] The following is combined with Figure 1-7 This application is described in further detail.

[0032] The present application embodiment discloses a multi-channel current-type power amplifier device. Figure 1 , Figure 2 A multi-channel current-type power amplifier device includes a power amplifier housing 1, a mounting assembly 2 is arranged on one side of the power amplifier housing 1, the mounting assembly 2 is arranged vertically, and a shock absorbing structure 3 is arranged between the mounting assembly 2 and the power amplifier housing 1.

[0033] The power amplifier housing 1 includes side panels 11 arranged relatively vertically, the side panels 11 are arranged perpendicularly to the mounting assembly 2, and the two opposite side panels 11 are arranged in parallel. A connecting plate 12 is arranged vertically between the two opposite side panels 11, and the connecting plate 12 is relatively parallel to the mounting assembly 2. A front wall panel 13 is fixedly connected to the side of the two opposite side panels 11 facing away from the connecting plate 12, and the front wall panel 13 is arranged in parallel with the connecting plate 12. A top panel 14 is horizontally arranged at the top of the two opposite side panels 11, and a connector wall panel 15 is horizontally arranged at the bottom of the two opposite side panels 11, and the connector wall panel 15 is arranged in parallel with the top panel 14.

[0034] A hollow rectangular shell structure is formed by the relatively arranged side panels 11, top panel 14, connector wall panel 15, connecting panel 12 and front wall panel 13. Components are installed inside the power amplifier housing 1 to protect the components.

[0035] A partition assembly 4 is horizontally arranged inside the power amplifier housing 1, and both ends of the partition assembly 4 are fixedly connected to the side panels 11 on both sides, and a gap is left between the lower surface of the partition assembly 4 and the connector wall panel 15. The partition assembly 4 divides the interior of the power amplifier housing 1 into a mounting portion located above the partition assembly 4 and a connector portion located below the partition assembly 4.

[0036] A partition plate 41 is vertically arranged at the top of the middle partition component 4, the bottom end of the partition plate 41 is fixedly connected to the middle partition component 4, and the top end of the partition plate 41 is fixedly connected to the top plate 14. The partition plate 41 divides the installation part into a power supply part on one side and a power amplifier part on the other side.

[0037] A power supply assembly 5 is disposed inside the power supply unit, and the power supply assembly 5 is fixedly connected to the side plate 11. A power amplifier assembly 6 is vertically disposed inside the power amplifier unit, and the power amplifier assembly 6 is fixedly connected to the partition assembly 4. Multiple power amplifier assemblies 6 are disposed inside the power amplifier unit, and the multiple power amplifier assemblies 6 are relatively parallelly disposed.

[0038] The power supply assembly 5 consists of 8 independent power modules and a power backplane. The power modules are installed on the backplane through quick blind insertion through positioning pins, ensuring that the modules can be quickly disassembled and repaired. In addition, to ensure high reliability and maintainability, the backplane is designed without electronic components. In order to meet the vibration and impact environmental test requirements of the device, the power module box is made of integral aluminum alloy, and the cover is made of 2mm aluminum alloy plate. The material is selected according to the test conditions, and the material grade is AL6061. The distance between the fixing screws of the box body and the cover is less than 95mm, and the countersunk screws are added with thread fasteners. The distance between the fixing screws of the PCB and the box body is less than or equal to 75mm, and a combination of screws is used for fixing. Each power module is fixed to the chassis shell by captive screws to ensure its structural stability.

[0039] The power supply components 5 are electrically isolated from each other, and the power supply components 5 can be freely combined and operated independently; similarly, each power amplifier in the power amplifier component 6 can independently control the input and output, and the input and output of each power amplifier are independently routed by the aviation plug on the connector component, thereby realizing the independent operation of multiple power amplifiers. The modular design greatly improves the versatility and scalability of the device.

[0040] Each power module and power base plate of the power assembly 5, as well as each power amplifier assembly 6, are equipped with handles to facilitate module disassembly and assembly. The power assembly 5 is a side-insertion type, inserted from the right side panel 11 of the chassis, and the power amplifier assembly 6 is a front-insertion type, which is inserted along the guide rail after opening the front cover of the chassis.

[0041] Reference Figure 3 , Figure 4 , multiple fans 7 are relatively arranged on the partition component 4, and a reserved fan installation part 42 is provided on the partition component 4, multiple reserved fan installation parts 42 are provided, and the fans 7 can be installed inside the reserved fan installation parts 42, and the number of fans 7 is not greater than the number of reserved fan installation parts 42, so that multiple fans 7 can be installed inside the reserved fan installation parts 42 according to specific needs.

[0042] The fan 7 includes a power supply fan 71 opposite to the power supply assembly 5 and a power amplifier fan 72 opposite to the power amplifier assembly 6. The power supply fan 71 and the power amplifier fan 72 can adjust the speed of the fan blades inside the fan according to the heat dissipation and noise requirements. The power supply fan 71 and the power amplifier fan 72 located on the partition assembly 4 can be replaced and repaired separately according to the needs.

[0043] The air inlet of the fan 7 is located below the partition assembly 4, and the air outlet of the fan 7 is located above the partition assembly 4, so that the fan 7 drives the gas inside the power amplifier housing 1 to flow along the height direction from bottom to top.

[0044] Reference Figure 4 , Figure 5 A connector ventilation waveguide window 151 is provided on the connector wall plate 15 , and the connector ventilation waveguide window 151 relatively connects the interior of the power amplifier housing 1 with the outside, and a plurality of connector ventilation waveguide windows 151 are provided on the connector wall plate 15 .

[0045] A plurality of top ventilation waveguide windows 141 are provided on the top plate 14, and the top ventilation waveguide windows 141 relatively connect the inside of the power amplifier housing 1 with the outside, so that the fan 7 drives the air at the bottom from the outside to enter the inside of the power amplifier housing 1 through the connector ventilation waveguide windows 151, and then the air is discharged to the outside through the top ventilation waveguide windows 141 after heat exchange in the inside of the power amplifier housing 1.

[0046] A baffle 142 is fixedly connected to the outer wall of the top plate 14 at a position relative to the top ventilation waveguide window 141. The baffle 142 is arranged horizontally, and a gap for ventilation is left between the bottom wall of the baffle 142 and the top wall of the top ventilation waveguide window 141. The baffle 142 can prevent water droplets from entering the chassis in a water drop environment, causing a short circuit in the circuit board.

[0047] The power amplifier assembly 6 includes power amplifier cards arranged relatively to each other. Two power amplifier cards form one power amplifier assembly 6. The tooth surfaces of the two power amplifier cards are opposite to each other, and the middle is a heat dissipation duct. Power amplifier PCB circuit boards are installed on both sides of each power amplifier assembly 6, wherein the heat-generating power amplifier components are mounted on the heat dissipation tooth surfaces. The PCB circuit boards are installed with positioning pins, which can realize the quick blind insertion installation of the power amplifier assembly 6. Each power amplifier assembly 6 is fixed to the chassis shell by a card locking strip and a captive screw to ensure that the assembly does not loosen under vibration and impact tests.

[0048] A PCB board is fixedly connected to the inner wall of the front wall plate 13, and a guide hole is opened at the bottom end of the front wall plate 13. The guide hole completely penetrates the side wall of the front wall plate 13 to prevent condensation water from accumulating in the chassis when the chassis is wall-mounted or placed horizontally, so that water can be discharged in time to prevent damage to the equipment caused by accumulated water.

[0049] The connector assembly includes a chassis connector, a ground terminal, a power switch, a fuse box and a filter. In order to meet the strength requirements, the connector mounting plate 21 is made of 10mm aluminum alloy plate, and in order to reduce weight, the thinnest wall thickness is 3mm; the installation positions of each inserted part of the connector mounting plate 21 are designed with concave platforms, and the connector, fuse holder and ventilation waveguide are designed with matching shielding pads to enhance the conductivity and sealing of the connector and the structural parts.

[0050] Reference Figure 1 , Figure 6 The outer wall of the front wall plate 13 is provided with an equipment nameplate, an indicator light and a reset button. A simple design scheme is adopted, and the working status of each power amplifier is simply and directly indicated by multiple indicator lights, which is convenient for staff to monitor the operating status of the chassis.

[0051] The side panels 11 on both sides are the side support panels of the box. In order to meet the strength requirements, the material is 10mm aluminum alloy plate. In order to facilitate the handling of the chassis and consider the aesthetics and practicality of the overall appearance, two 90-degree bendable handles are installed at the bottom of the left and right side panels 11 of the chassis. Since the power module in the power assembly 5 is inserted from the right, in order to facilitate installation and maintenance, a window is opened at the right side panel 11 and then blocked with a small panel.

[0052] Reference Figure 1 , Figure 7 The mounting assembly 2 includes a horizontally arranged mounting plate 21, the mounting plate 21 is arranged parallel to the connecting plate 12, and a shock absorbing structure 3 is arranged between the mounting plate 21 and the connecting plate 12. The shock absorbing structure 3 includes a shock absorber 31, one end of the shock absorber 31 is fixedly connected to the mounting plate 21, and the end of the shock absorber 31 close to the connecting plate 12 is fixedly connected to a shock absorbing sheet 32, and the shock absorbing sheet 32 ​​is fixedly connected to the connecting plate 12. A weight-reducing hole is provided on the mounting plate 21 to further reduce the weight of the equipment.

[0053] In this application, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0054] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A multi-channel current-type power amplifier device, characterized in that: The invention comprises a power amplifier housing (1), wherein a partition component (4) is horizontally arranged inside the power amplifier housing (1), a power amplifier component (6) is vertically arranged above the partition component (4), a power supply component (5) is arranged on one side of the power amplifier component (6), a mounting component (2) is arranged at the bottom end of the power amplifier housing (1), and a shock absorbing structure (3) is arranged between the mounting component (2) and the power amplifier housing (1).

2. The multi-channel current source power amplifier device according to claim 1, characterized in that: The power amplifier housing (1) comprises side panels (11) arranged opposite to each other, the top end of the side panel (11) being fixedly connected to a top panel (14), the bottom wall of the side panel (11) being fixedly connected to a connector wall panel (15), a connecting plate (12) being vertically arranged on one side of the side panel (11), the connecting plate (12) being connected to the shock absorbing structure (3), and a front wall panel (13) being fixedly connected to a side of the side panel (11) facing away from the connecting plate (12).

3. The multi-channel current source power amplifier device according to claim 2, characterized in that: The top plate (14) is provided with a top ventilation waveguide window (141), the connector wall plate (15) is provided with a connector ventilation waveguide window (151), and the partition assembly (4) is fixedly connected with a fan (7), the air outlet direction of the fan (7) being toward the top ventilation waveguide window (141).

4. The multi-channel current source power amplifier device according to claim 3, characterized in that: The top plate (14) is provided with a baffle (142) relative to the top ventilation waveguide window (141), and a gap is left between the bottom wall of the baffle (142) and the top wall of the top ventilation waveguide window (141) for ventilation.

5. The multi-channel current-source power amplifier device according to claim 3, characterized in that: The partition assembly (4) is provided with a plurality of reserved fan mounting portions (42), the reserved fan mounting portions (42) being fixedly connected to the fan (7), a plurality of the fans (7) being provided, and the number of the fans (7) is no more than the number of the reserved fan mounting portions (42).

6. The multi-channel current source power amplifier device according to claim 2, characterized in that: A connector component is arranged on the connector wall plate (15), and a recess is arranged on the connector wall plate (15) relative to the connector component, wherein the connection end of the connector component is located inside the recess.

7. The multi-channel current-source power amplifier device according to claim 2, characterized in that: A PCB board is fixedly connected to the inner side wall of the front wall plate (13), and a guide hole is provided at the bottom of the front wall plate (13).

8. The multi-channel current source power amplifier device according to claim 2, characterized in that: The side panels (11) are provided with handles, and the handles on the opposite side panels (11) are arranged opposite to each other.

9. The multi-channel current-source power amplifier device according to claim 2, characterized in that: The mounting assembly (2) comprises a mounting plate (21), the mounting plate (21) being arranged in parallel with the connecting plate (12), one end of the shock absorbing structure (3) being fixed to the mounting plate (21), and the other end of the shock absorbing structure (3) being fixed to the connecting plate (12).

10. The multi-channel current-source power amplifier device according to claim 9, characterized in that: The shock absorbing structure (3) comprises a shock absorber (31), wherein the shock absorber (31) is fixed to the mounting plate (21), a shock absorbing plate (32) is fixedly connected to a side of the shock absorber (31) close to the connecting plate (12), and the shock absorbing plate (32) is fixedly connected to the connecting plate (12).

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