Power amplifier heat dissipation unit, power amplifier unit and power amplifier

Abstract

The utility model discloses a power amplifier heat dissipation unit, a power amplifier unit and a power amplifier, the power amplifier heat dissipation unit comprises a radiator, a heat dissipation air channel extending back and forth is arranged in the radiator, and the surface of the radiator is provided with a plurality of installation areas used for installing power amplifier tubes; a first end face inclining upwards from front to back is arranged at the front end of the radiator, a first draught fan is arranged on the first end face, and a rotating shaft of the first draught fan inclines downwards from front to back. The inclined first end face is arranged, and the air supply direction of the first fan and the heat dissipation air channel form an included angle, so that the disturbance degree of airflow in the heat dissipation air channel can be enhanced, the airflow condition in the heat dissipation air channel deviates to turbulent flow, the heat exchange efficiency between air and the heat dissipation device is high, and the purpose of improving the heat dissipation performance of the power amplifier is achieved; the power amplifier unit comprises the power amplifier heat dissipation unit. The power amplifier comprises the power amplifier unit.

Description

Technical Field

[0001] The utility model relates to the field of audio equipment, in particular to a power amplifier heat dissipation unit, a power amplifier unit and a power amplifier. Background Art

[0002] During the use of audio power amplifiers, their power amplifier tubes will generate a lot of heat. If the power amplifier tubes work in a high temperature environment for a long time, their service life will be seriously reduced and their normal work will be affected. Based on this, the heat dissipation treatment of the audio power amplifier is very important. How to improve the heat dissipation performance of the audio power amplifier is a key issue in the design and manufacture of audio power amplifiers. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a power amplifier heat dissipation unit, a power amplifier unit and a power amplifier.

[0004] According to the first aspect of the utility model, the power amplifier heat dissipation unit includes a radiator, a heat dissipation duct extending frontward and rearward is provided in the radiator, and a plurality of installation areas for installing power amplifier tubes are provided on the surface of the radiator; a first end face inclined upward from front to rear is provided at the front end of the radiator, a first fan is provided on the first end face, and a rotating shaft of the first fan is arranged to be inclined downward from front to rear.

[0005] The power amplifier heat dissipation unit according to the embodiment of the first aspect of the utility model has at least the following technical effects: by setting an inclined first end face, the air supply direction of the first fan forms an angle with the heat dissipation duct, which can enhance the disturbance of the airflow in the heat dissipation duct, making the air flow in the heat dissipation duct tend to be turbulent, and the heat exchange efficiency between the air and the radiator is higher, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0006] According to some embodiments of the present invention, the radiator is provided with a plurality of radiating fins, and the plurality of radiating fins are stacked in sequence and spaced apart vertically.

[0007] According to some embodiments of the present invention, the mounting area is provided on the top surface or the bottom surface of the radiator.

[0008] According to some embodiments of the present invention, the heat sink is a component made of aluminum alloy material.

[0009] According to some embodiments of the present invention, a second fan is provided at the rear end of the radiator.

[0010] According to some embodiments of the present invention, the rotating shaft of the second fan is extended forward and backward.

[0011] According to the second aspect of the present invention, the power amplifier unit includes a power amplifier circuit board and the above-mentioned power amplifier heat dissipation unit, the power amplifier circuit board is provided with a plurality of power amplifier tubes, and the power amplifier tubes are arranged one by one in the installation area and fit with the radiator.

[0012] The power amplifier unit according to the embodiment of the second aspect of the utility model has at least the following technical effects: by setting the above-mentioned power amplifier heat dissipation unit, the heat exchange efficiency between the air and the radiator is high, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0013] According to some embodiments of the present invention, the power amplifier unit further includes a capacitor assembly, the capacitor assembly includes a plurality of capacitors, and the capacitor assembly is disposed on the front side of the first fan.

[0014] The power amplifier according to the third aspect of the present invention comprises a chassis, wherein the power amplifier unit is arranged inside the chassis, and an exhaust port and a first air inlet are arranged on the wall of the chassis, wherein the first air inlet and the exhaust port are arranged in front of and behind the power amplifier unit respectively.

[0015] The power amplifier according to the embodiment of the third aspect of the utility model has at least the following technical effects: by setting the above-mentioned power amplifier unit, the heat exchange efficiency between the air and the radiator is high, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0016] According to some embodiments of the present invention, a second air inlet is provided on the top wall of the chassis, and the second air inlet is provided above the first fan.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of a heat dissipation unit of a power amplifier according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a power amplifier according to an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a power amplifier according to an embodiment of the utility model.

[0022] Attached photos

[0023] 100 - radiator; 101 - first end face; 110 - heat sink; 210 - first fan; 220 - second fan; 300 - power amplifier circuit board; 310 - power amplifier tube; 400 - capacitor assembly; 500 - transformer; 600 - chassis. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present utility model, it should be understood that the directions or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the meaning of several is one or more, the meaning of more than two is more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, not all embodiments.

[0028] Reference below Figures 1 to 3 A power amplifier heat dissipation unit, a power amplifier unit and a power amplifier according to embodiments of the present utility model are described.

[0029] The power amplifier heat dissipation unit of the first embodiment of the utility model includes a radiator 100, a heat dissipation duct extending frontward and rearward is provided in the radiator 100, and a plurality of installation areas for installing the power amplifier tube 310 are provided on the surface of the radiator 100; a first end face 101 inclined upward from front to rear is provided at the front end of the radiator 100, and a first fan 210 is provided on the first end face 101, and a rotating shaft of the first fan 210 is arranged to be inclined downward from front to rear.

[0030] For example, Figure 1 As shown, the radiator 100 is in the shape of a strip extending forward and backward, and the heat dissipation air duct penetrates the radiator 100 in the forward and backward direction, so that the wind sent by the first fan 210 passes through the inside of the radiator 100 from front to back, thereby dissipating heat for the radiator 100; the installation area can be arranged on the top surface, bottom surface, left side surface or right side surface of the radiator 100; the radiator 100 has a main body and a wedge-shaped protrusion arranged at the front end of the main body, the bottom surface of the protrusion is flush with the bottom surface of the radiator 100, and the protrusion The vertical dimension increases gradually from front to back, so that the top surface of the protrusion is inclined upward from front to back, and the top surface of the protrusion is the first end surface 101; the first fan 210 is an axial flow fan, and the first fan 210 is covered at the front end of the heat dissipation duct. The first fan 210 is attached to the first end surface 101, so that the axis of the first fan 210 is perpendicular to the first end surface 101, and the first fan 210 and the radiator 100 can be relatively fixedly connected by bolts or other connection methods.

[0031] It is understandable that, in a conventional power amplifier heat dissipation unit, the axial direction of the fan is parallel to the heat dissipation air duct, the air supply direction of the fan is parallel to the heat dissipation air duct, the air flow in the heat dissipation air duct tends to be laminar flow and transitional flow, and the heat exchange efficiency between the air and the radiator 100 is low. The utility model can enhance the disturbance of the air flow in the heat dissipation air duct by setting an inclined first end face 101, and the air supply direction of the first fan 210 forms an angle with the heat dissipation air duct, so that the air flow in the heat dissipation air duct tends to be turbulent, and the heat exchange efficiency between the air and the radiator 100 is high, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0032] In some embodiments of the present invention, the radiator 100 is provided with a plurality of heat sinks 110, and the plurality of heat sinks 110 are stacked in sequence in a vertical direction. The plane where the heat sink 110 is located intersects with the axis of the first fan 210, and the airflow blown out by the first fan 210 blows toward the mutually parallel heat sinks 110 at a certain angle, and moves between the two parallel heat sinks 110 in a wavy curve. The airflow repeatedly blows toward the same heat sink 110, taking away more heat from the heat sink 110, and dissipating heat better. Of course, in some other embodiments of the present invention, the plurality of heat sinks 110 can also be stacked in sequence from left to right.

[0033] In some embodiments of the present invention, the installation area is set on the top or bottom surface of the radiator 100. All the installation space can be set on the top surface of the radiator 100, all the installation space can be set on the bottom surface of the radiator 100, part of the installation space can be set on the top surface of the radiator 100, and part of the installation space can be set on the top surface of the radiator 100; in this way, when manufacturing the power amplifier, the power amplifier circuit board 300 can be set on the left or right side of the radiator 100, which is conducive to reducing the vertical size of the power amplifier.

[0034] In some other embodiments of the utility model, the installation area is set on the left side, right side or bottom of the radiator 100. All the installation space can be set on the left side and right side of the radiator 100, or all the installation space can be set on the bottom of the radiator 100, or part of the installation space can be set on the left side and right side of the radiator 100, and part of the installation space can be set on the bottom of the radiator 100; in this way, when manufacturing the power amplifier, the power amplifier circuit board 300 can be set at the bottom of the radiator 100, which is conducive to reducing the lateral size of the power amplifier.

[0035] In some embodiments of the present invention, the heat sink 100 is made of aluminum alloy material, so that the heat sink 100 has a small weight and a good heat dissipation effect.

[0036] In some embodiments of the present invention, a second fan 220 is provided at the rear end of the heat sink 100. By providing the second fan 220, the flow rate of the air in the heat dissipation air duct is further accelerated.

[0037] In some embodiments of the utility model, the rotation axis of the second fan 220 is extended forward and backward. In this way, when manufacturing the power amplifier, the second fan 220 can be attached to the rear wall of the chassis 600, and an exhaust port is provided at the rear wall of the chassis 600 corresponding to the second fan 220, so that the hot air sent by the second fan 220 is directly discharged to the outside of the chassis 600, preventing the hot air from staying in the chassis 600.

[0038] The power amplifier unit of the second embodiment of the utility model includes a power amplifier circuit board 300 and the above-mentioned power amplifier heat dissipation unit, and the power amplifier circuit board 300 is provided with a plurality of power amplifier tubes 310, and the plurality of power amplifier tubes 310 are arranged in a one-to-one correspondence in a plurality of installation areas and are all attached to the radiator 100. By providing the above-mentioned power amplifier heat dissipation unit, the heat exchange efficiency between the air and the radiator 100 is high, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0039] In some embodiments of the utility model, the power amplifier unit further includes a capacitor assembly 400, which includes a plurality of capacitors, and the capacitor assembly 400 is arranged at the front side of the first fan 210. It can be understood that the transformer 500 and the capacitor assembly 400 are necessary components in the power amplifier circuit system, and the transformer 500 is generally in the shape of a vertically arranged cylinder; the power amplifier circuit board 300 is arranged on the left or right side of the radiator 100, and the lateral dimensions of the radiator 100 and the power amplifier circuit board 300 as a whole are greater than the lateral dimensions of the first fan 210; by arranging the capacitor assembly 400 at the front side of the first fan 210, when assembling the power amplifier, the first fan 210 can be arranged on the left or right side of the maximum lateral dimension of the transformer 500, and the power amplifier circuit board 300 can be arranged on the left or right side of the smaller lateral dimension of the transformer 500, which is conducive to making the transformer 500 closer to the power amplifier unit and facilitating the miniaturization of the power amplifier.

[0040] The power amplifier of the third embodiment of the utility model comprises a chassis 600, wherein the above-mentioned power amplifier unit is arranged in the chassis 600, and the wall of the chassis 600 is provided with an exhaust port and a first air inlet, wherein the first air inlet and the exhaust port are arranged in front of and behind the power amplifier unit, respectively. By arranging the above-mentioned power amplifier unit, the heat exchange efficiency between the air and the radiator 100 is high, thereby achieving the purpose of improving the heat dissipation performance of the power amplifier.

[0041] In some embodiments of the present invention, referring to Figure 2 The power amplifier also includes a transformer 500, which is in a vertical cylindrical shape. The power amplifier unit is arranged on the left or right side of the transformer 500. The front and rear positions of the axis of the transformer 500 are located between the heat sink 100 and the capacitor assembly 400. The power amplifier circuit board 300 is arranged on the side of the heat sink 100 facing the transformer 500. This is conducive to bringing the transformer 500 closer to the power amplifier unit and miniaturizing the power amplifier.

[0042] In some embodiments of the present invention, referring to Figure 3 The power amplifier can also be configured such that the heat sink 110 of the radiator 100 is vertically arranged, and multiple heat sinks 110 are arranged in sequence and spaced apart in the horizontal direction, and the power amplifier circuit board 300 is arranged at the bottom of the radiator 100.

[0043] In some embodiments of the present invention, the top wall of the chassis 600 is provided with a second air inlet, and the second air inlet is provided above the first fan 210. Since the axis of the first fan 210 is arranged at an angle, the first fan 210 takes in air from the front and top thereof. By providing the second air inlet above the first fan 210, it is helpful to reduce the wind resistance of the air intake, increase the air supply speed of the first fan 210, and further improve the heat dissipation performance of the power amplifier. At the same time, since the first fan 210 takes in air from the front and top, when the capacitor assembly 400 is arranged in front of the first fan 210, the capacitor assembly 400 has less obstruction to the air intake of the first fan 210.

[0044] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A heat dissipation unit for a power amplifier, characterized in that: The invention comprises a radiator (100), wherein a heat dissipation air duct extending forward and backward is provided in the radiator (100), and a plurality of installation areas for installing power amplifier tubes (310) are provided on the surface of the radiator (100); a first end surface (101) inclined upward from front to back is provided at the front end of the radiator (100), and a first fan (210) is provided on the first end surface (101), and a rotating shaft of the first fan (210) is arranged to be inclined downward from front to back.

2. The power amplifier heat dissipation unit according to claim 1, characterized in that: The radiator (100) is provided with a plurality of radiating fins (110), and the plurality of radiating fins (110) are stacked in sequence at intervals along the vertical direction.

3. The power amplifier heat dissipation unit according to claim 1, characterized in that: The installation area is arranged on the top surface or the bottom surface of the heat sink (100).

4. The power amplifier heat dissipation unit according to claim 1, characterized in that: The radiator (100) is a component made of aluminum alloy material.

5. The power amplifier heat dissipation unit according to claim 1, characterized in that: A second fan (220) is provided at the rear end of the radiator (100).

6. The power amplifier heat dissipation unit according to claim 5, characterized in that: The rotating shaft of the second fan (220) is arranged to extend forward and backward.

7. A power amplifier unit, characterized in that: It comprises a power amplifier circuit board (300) and a power amplifier heat dissipation unit according to any one of claims 1 to 6, wherein the power amplifier circuit board (300) is provided with a plurality of power amplifier tubes (310), and the power amplifier tubes (310) are arranged in a one-to-one correspondence in the installation area and are fitted with the heat sink (100).

8. The power amplifier unit according to claim 7, characterized in that: The power amplifier unit further comprises a capacitor component (400), the capacitor component (400) comprising a plurality of capacitors, and the capacitor component (400) is arranged on the front side of the first fan (210).

9. A power amplifier, characterized in that: The invention comprises a chassis (600), wherein the power amplifier unit according to claim 7 is arranged in the chassis (600), and an air outlet and a first air inlet are arranged on the wall of the chassis (600), and the first air inlet and the air outlet are arranged in front of and behind the power amplifier unit respectively.

10. The power amplifier according to claim 9, characterized in that: The top wall of the chassis (600) is provided with a second air inlet, and the second air inlet is arranged above the first fan (210).

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