Equalizer capable of improving heat dissipation effect

Abstract

The invention provides an equalizer capable of improving a heat dissipation effect, and relates to the technical field of electroacoustic equipment. A concave structure is arranged between two vibrating diaphragms of the equalizer shell, at least three acoustic resonant cavities are vertically and coaxially arranged at the concave position through a supporting frame, the acoustic resonant cavities are in a stepped shape, and the acoustic resonant cavities are sequentially enlarged from top to bottom; sound moving rods are vertically arranged at the coaxial positions of the multiple layers of acoustic resonant cavities in a sliding mode, resonance discs are arranged at the upper ends of the acoustic resonant cavities, resonance frames are arranged at the lower ends of the acoustic resonant cavities, and the sound moving rods, the resonance discs and the resonance frames are interlocked through sound pressure vibration to form an acoustic resonance mechanism. Through the design of the acoustic resonant cavities, the passive heat dissipation is remarkably improved, and the acoustic resonant cavities are arranged in a vertical coaxial stepped manner, are gradually increased from top to bottom, and can adapt to sound pressure energy of different frequencies.

Description

Technical Field

[0001] The present invention relates to the technical field of electroacoustic equipment, and in particular to an equalizer capable of improving heat dissipation effect. Background Art

[0002] In the field of audio equipment, with the continuous advancement of technology and the increasing requirements of users for sound quality, the performance optimization of equalizers has become a key research direction. As a core component in the audio system, the heat dissipation effect of the equalizer directly affects the stability and service life of the equipment. However, traditional equalizer heat dissipation designs often have problems such as low heat dissipation efficiency and poor heat conduction, which causes the internal temperature of the equalizer to rise rapidly under high power operation, which not only affects the sound quality output, but may also cause equipment failure.

[0003] Traditional heat dissipation methods mainly rely on natural convection and heat sinks, but these methods are inadequate when facing high-power audio equipment. Natural convection heat dissipation has limited effect and is difficult to meet the heat dissipation requirements of the equalizer under high load; and although the heat sink can increase the heat dissipation area, it is limited by the internal space of the equalizer, and its heat dissipation effect is often unsatisfactory. In addition, fan heat dissipation may introduce mechanical vibration noise, interfering with audio signals. Summary of the invention

[0004] The present invention relates to an equalizer capable of improving heat dissipation effect, and aims to solve the problems of low heat dissipation efficiency and poor heat conduction of traditional equalizers through innovative acoustic resonance cavity design, combination of active cooling system, rapid heat conduction and low noise level design, so as to provide a high-performance and high-stability equalizer solution for the field of audio equipment.

[0005] The present invention provides an equalizer capable of improving heat dissipation effect, specifically comprising: an equalizer shell; an inner concave structure is set between two diaphragms of the equalizer shell, an acoustic resonance cavity is arranged at the inner concave part through a support frame, and there are at least three acoustic resonance cavities coaxially arranged in a vertical step shape, and the acoustic resonance cavities increase in size from top to bottom; a sound-actuating rod is vertically slidably arranged at the coaxial part of the multiple layers of the acoustic resonance cavities, a resonance disk is arranged at the upper end of the acoustic resonance cavity, and a resonance frame is arranged at the lower end of the acoustic resonance cavity, and the sound-actuating rod, the resonance disk and the resonance frame are interlocked through sound pressure vibration to form an acoustic resonance mechanism; a heat dissipation air pipe is arranged in the equalizer shell, and a support is arranged between the heat dissipation air pipe and the acoustic resonance cavity of each layer The pipes are connected, and the outlet of the heat dissipation air pipe extends downward to the resonance frame; a heat conduction plate is vertically supported in the equalizer shell cavity on the inner side of the heat dissipation air pipe, and a graphene composite layer is attached to one end of the heat conduction plate away from the heat dissipation air pipe, and the other end of the graphene composite layer extends to the bottom of the circuit board in the equalizer; a serpentine cooling coil is arranged in the interlayer between the heat dissipation air pipe and the heat conduction plate, the upper end of the cooling coil is a coolant return pipe, and the lower end of the cooling coil is a coolant inlet pipe, a circulating piston cylinder connected with the cooling coil inlet and outlet pipes is hung on one side of the resonance frame, the coolant return pipe of the cooling coil is spirally coiled on the cooling air duct, and the cooling air duct is fixed side by side on one side of the acoustic resonance cavity.

[0006] Optionally, adjacent acoustic resonance cavities are connected via a neck tube that is wide at the top and narrow at the bottom, the upper port edge of the topmost neck tube is an outward-turned structure, the sonic rod is located in the middle of each neck tube, and the resonance disk is located at the topmost neck tube.

[0007] Optionally, a supporting block is horizontally fixed at the position corresponding to the sonic rod in the inner cavity of the acoustic resonance cavity on each side, and the sonic rod slides vertically in the supporting block. A leather cup that is narrow on the top and wide on the bottom is also fixed at the upper position of the sonic rod in each layer of the acoustic resonance cavity. The leather cup moves up and down with the sonic rod to drive the airflow downward, and sound transmission bone strips are respectively provided at the position corresponding to each branch pipe on the supporting block, and the sound transmission bone strips extend to the deep part of the inner cavity of the branch pipe.

[0008] Optionally, the upper end of the resonance disk is arc-shaped, and sound-absorbing convex columns are evenly spaced on the bottom surface of the resonance disk. A guide cone that is wide at the top and narrow at the bottom is fixedly provided at the connection between the bottom of the resonance disk and the sound-moving rod, and fins for guiding airflow and sound downward are distributed in an annular manner on the guide cone.

[0009] Optionally, a rectangular strip-shaped connecting rod with an anti-rotation effect is vertically slidably installed in the resonance frame, the upper end of the connecting rod is fixedly connected to the lower end of the sound-moving rod, a baffle is fixedly provided on the upper end of the connecting rod, a spring is provided on the connecting rod between the baffle and the resonance frame, a counterweight is fixedly provided on the lower end of the connecting rod, the counterweight is connected to an eccentric wheel through a rotating shaft along the outlet direction of the heat dissipation air pipe, the eccentric wheel is symmetrically provided with two ends of the rotating shaft, and a fan wheel is also provided on the rotating shaft near the eccentric wheel, and the fan wheel rotates with the eccentric wheel to accelerate the air at the outlet of the heat dissipation air pipe to draw it outward.

[0010] Optionally, the upper end of the heat dissipation air pipe is a closed end, and the connection between the branch pipe and the heat dissipation air pipe is a downward folded inclined structure for guiding the airflow downward.

[0011] Optionally, the heat conducting plate is made of porous aluminum alloy, and heat dissipation holes with honeycomb pores are formed by laser 3D printing.

[0012] Optionally, the graphene composite layer is provided with heat pipes distributed side by side, and the heat pipes are filled with phase change working fluid.

[0013] Optionally, a one-way valve is provided in the inlet and outlet pipes connecting the cooling coil and the circulating piston cylinder. The end of the piston rod of the cooling coil is vertically connected to an extension plate, which passes through the resonance frame and is fixedly connected to the baffle plate. The baffle plate drives the extension plate to move back and forth when it moves back and forth. The piston rod of the circulating piston cylinder moves back and forth to transport the coolant to circulate in the cooling coil.

[0014] Optionally, the upper end of the cooling air duct is a shuttle-shaped variable-diameter sound-vibration cavity, and the cooling air duct is vertically filled with a wavy guide baffle. The wavy structure is used to form turbulence by means of sound-vibration disturbance of the airflow, breaking the laminar boundary layer, and the wall of the cooling air duct is provided with evenly spaced air outlet holes, and the air outlet holes overflow the airflow to the coiled coolant return pipe.

[0015] The present invention provides an equalizer capable of improving heat dissipation effect, which has the following beneficial effects:

[0016] First of all, the acoustic resonance cavity design has achieved a significant improvement in passive heat dissipation. The acoustic resonance cavity adopts a vertical coaxial stepped arrangement, which gradually increases from top to bottom and can adapt to the sound pressure energy of different frequencies. This design not only effectively utilizes the sound pressure energy to drive the airflow to form a passive heat dissipation cycle, but also enhances the heat dissipation efficiency through the coordinated work of multiple layers of acoustic resonance cavities. At the same time, the interlocking mechanism of the sound dynamic rod, resonance disk and resonance frame further improves the heat dissipation effect and forms a stable airflow cycle.

[0017] Secondly, combined with the active cooling system, the present invention achieves further optimization of the heat dissipation effect. The heat dissipation air duct is connected to the acoustic resonance cavity, which extracts the heat from the acoustic resonance cavity and further dissipates the heat through the cooling coil and the cooling air duct. The coolant in the cooling coil circulates under the drive of the circulating piston cylinder, effectively absorbing the heat. At the same time, the guide baffle in the cooling air duct forms turbulence through sound and vibration disturbance, breaking the laminar boundary layer of the airflow and further improving the heat dissipation efficiency. This combination of active and passive heat dissipation methods has made the equalizer achieve a significant breakthrough in heat dissipation performance.

[0018] In addition, the present invention also achieves rapid heat conduction through the design of the graphene composite layer and the porous aluminum alloy heat conduction plate. The heat pipe in the graphene composite layer is filled with a phase change medium, which can quickly conduct the heat of the circuit board to the heat dissipation air pipe. The porous aluminum alloy heat conduction plate increases the heat dissipation surface area and improves the heat conduction efficiency. These designs enable the equalizer to more effectively utilize the heat conduction mechanism during the heat dissipation process, further improving the heat dissipation effect.

[0019] Finally, the equalizer of the present invention improves heat dissipation performance while maintaining a low noise level. The guide baffle in the cooling air duct not only enhances the heat dissipation effect, but also absorbs airflow noise, ensuring the purity of the audio signal. This gives the equalizer a significant advantage in the long-term stable operation of high-power audio equipment.

[0020] In summary, the present invention achieves a significant improvement in the heat dissipation effect of the equalizer through innovative acoustic resonance cavity design, the combination of an active cooling system, rapid heat conduction, and a low noise level design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0022] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0023] In the attached picture:

[0024] Figure 1 A schematic diagram of the first axial structure of the acoustic resonance cavity of the present invention installed on the equalizer housing is shown;

[0025] Figure 2 A schematic diagram of the structure of the acoustic resonance cavity of the present invention installed on the equalizer housing from a second axis is shown;

[0026] Figure 3 The schematic diagram of the upper axial structure of the acoustic resonance cavity, the resonance frame and the heat dissipation air pipe of the present invention is shown;

[0027] Figure 4 The schematic diagram of the axial structure of the graphene composite layer and the cooling air duct of the present invention is shown;

[0028] Figure 5 The present invention shows Figure 4 A is a schematic diagram of the structure of the enlarged part;

[0029] Figure 6 The schematic diagram of the lower axial structure of the acoustic resonance cavity, the resonance frame and the heat dissipation air pipe of the present invention is shown;

[0030] Figure 7 The present invention shows Figure 6 Middle B is a schematic diagram of the structure of the enlarged part;

[0031] Figure 8 The schematic diagram of the axial structure of the acoustic resonance cavity of the present invention in a half-cut and separated state is shown;

[0032] Fig. 9 The schematic diagram of the axial structure of the sonic rod, the resonance disk, the resonance frame and the cooling coil of the present invention is shown;

[0033] Fig.10 A schematic diagram of the axial structure of a portion of the cooling air duct of the present invention is shown.

[0034] Reference numerals list

[0035] 1. Equalizer housing; 2. Acoustic resonance cavity; 201. Neck tube; 3. Sound vibration rod; 301. Support block; 302. Leather cup; 303. Sound transmission bone strip; 4. Resonance disk; 401. Boss; 402. Guide cone; 5. Resonance frame; 501. Connecting rod; 502. Baffle plate; 5021. Extension plate; 503. Spring; 504. Counterweight; 505. Eccentric wheel; 506. Fan wheel; 6. Heat dissipation air duct; 601. Branch pipe; 7. Heat conduction plate; 701. Heat dissipation hole; 8. Graphene composite layer; 801. Heat pipe; 9. Cooling coil; 901. Circulating piston cylinder; 902. Cooling air duct; 9021. Air outlet; 9022. Sound vibration cavity; 9023. Diversion baffle. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-Figure 8The present invention proposes an equalizer capable of improving heat dissipation effect, comprising: an equalizer housing 1; an inner concave structure is set between two diaphragms of the equalizer housing 1, an acoustic resonance cavity 2 is supported and mounted at the inner concave position, and the acoustic resonance cavity 2 is vertically coaxial and stepped, and has at least three acoustic resonance cavities 2, which increase in size from top to bottom. Through the stepped arrangement of multiple layers of acoustic resonance cavities 2, the sound pressure energy can be effectively used to drive the airflow to achieve passive heat dissipation. The size of each layer of acoustic resonance cavity 2 gradually increases from top to bottom, which can adapt to sound pressure vibrations of different frequencies and improve heat dissipation. Efficiency; a sound-moving rod 3 is vertically slidably arranged at the coaxial part of the multi-layer acoustic resonance cavity 2, a resonance disk 4 is arranged at the upper end of the acoustic resonance cavity 2, and a resonance frame 5 is arranged at the lower end of the acoustic resonance cavity 2. The sound-moving rod 3, the resonance disk 4 and the resonance frame 5 are interlocked by sound pressure vibration to form an acoustic resonance mechanism, and the sound-moving rod 3 is driven up and down by the sound pressure vibration, so as to drive the resonance disk 4 and the resonance frame 5 to work together to form an air circulation and enhance the heat dissipation effect; a heat dissipation air pipe 6 is arranged in the equalizer housing 1, and the heat dissipation air pipe 6 is connected to the acoustic resonance cavity 2 of each layer through a branch pipe 601, and the heat dissipation air pipe 6 The outlet extends downward to the resonance frame 5, and the heat dissipation air pipe 6 is connected to each layer of the acoustic resonance cavity 2 through the branch pipe 601, which can extract the heat from the acoustic resonance cavity 2 and further dissipate the heat through the cooling coil 9 and the cooling air duct 902; a heat conduction plate 7 is vertically supported in the cavity of the equalizer housing 1 inside the heat dissipation air pipe 6, and a graphene composite layer 8 is attached to one end of the heat conduction plate 7 away from the heat dissipation air pipe 6, and the other end of the graphene composite layer 8 extends to the bottom of the circuit board in the equalizer, and the heat conduction plate 7 quickly conducts the heat of the circuit board to the heat dissipation air pipe 6 through the graphene composite layer 8. Improve the overall heat dissipation efficiency; a serpentine cooling coil 9 is provided in the interlayer between the heat dissipation air pipe 6 and the heat conduction plate 7, the upper end of the cooling coil 9 is a coolant return pipe, and the lower end of the cooling coil 9 is a coolant inlet pipe. A circulating piston cylinder 901 connected to the inlet and outlet pipes of the cooling coil 9 is hung on one side of the resonance frame 5. The coolant is driven to circulate in the cooling coil 9 through the circulating piston cylinder 901, further enhancing the heat dissipation effect. The coolant return pipe of the cooling coil 9 is spirally coiled on the cooling air duct 902, and the cooling air duct 902 is fixed side by side on one side of the acoustic resonance cavity 2.

[0038] Among them, adjacent acoustic resonance cavities 2 are connected by a neck tube 201 which is wide at the top and narrow at the bottom, which can effectively guide the airflow from the upper acoustic resonance cavity 2 to the lower acoustic resonance cavity 2 and improve the airflow circulation efficiency. The upper end edge of the uppermost neck tube 201 is an outward-turned structure, which can smoothly guide the airflow to enter. The sonic rod 3 is located in the middle of each neck tube 201, and the resonance disk 4 is located at the uppermost neck tube 201.

[0039] Among them, a supporting block 301 is fixed horizontally at the position corresponding to the sound rod 3 in the inner cavity of the acoustic resonance cavity 2 on each side. The sound rod 3 slides vertically in the supporting block 301 to ensure that the sound rod 3 slides stably in the acoustic resonance cavity 2 to avoid displacement due to vibration. A leather cup 302 with a narrow top and a wide bottom is also fixed at the upper position of the sound rod 3 in the acoustic resonance cavity 2 of each layer. The leather cup 302 moves up and down with the sound rod 3 to drive the airflow downward, which can effectively capture the sound pressure vibration energy, drive the airflow downward, and enhance the heat dissipation effect. A sound transmission bone strip 303 is respectively provided at the position corresponding to each branch pipe 601 on the supporting block 301. The sound transmission bone strip 303 extends to the deep inner cavity of the branch pipe 601 to transmit the sound pressure vibration energy to the branch pipe 601, thereby further improving the airflow circulation efficiency.

[0040] Among them, the upper end of the resonance disk 4 is arc-shaped, which can effectively focus the sound pressure vibration energy and enhance the resonance effect. The bottom surface of the resonance disk 4 is evenly spaced with sound-absorbing convex columns 401 to reduce the sound wave reflection on the surface of the resonance disk 4 and avoid noise interference. A guide cone 402 that is wide on the top and narrow on the bottom is fixedly provided at the connection between the bottom of the resonance disk 4 and the sound-moving rod 3. The guide cone 402 is annularly distributed with fins for guiding the airflow and sound downward, which can guide the airflow and sound waves to move downward and enhance the heat dissipation effect.

[0041] Among them, a rectangular parallelepiped strip connecting rod 501 with anti-rotation effect is vertically slidably installed in the resonance frame 5 to ensure the linkage stability of the sound-moving rod 3 and the resonance frame 5 to avoid deviation due to vibration. The upper end of the connecting rod 501 is fixedly connected to the lower end of the sound-moving rod 3, and a baffle 502 is fixedly arranged on the upper end of the connecting rod 501. A spring 503 is arranged on the connecting rod 501 between the baffle 502 and the resonance frame 5 to provide a reset force to ensure that the sound-moving rod 3 can be quickly reset after the sound pressure vibration ends. The lower end of the connecting rod 501 A counterweight body 504 is fixed at one end, and the counterweight body 504 is connected to an eccentric wheel 505 by rotating along the outlet direction of the heat dissipation air pipe 6 through a rotating shaft. The eccentric wheel 505 is symmetrically provided with two wheels disposed at both ends of the rotating shaft. A fan wheel 506 is also provided on the rotating shaft near the eccentric wheel 505. The fan wheel 506 rotates with the eccentric wheel 505 to accelerate the air at the outlet of the heat dissipation air pipe 6 to be drawn outwards. The eccentric wheel 505 is driven to rotate by the vibration of the counterweight body 504, and the fan wheel 506 is driven to accelerate the airflow to be drawn outwards, thereby further improving the heat dissipation effect.

[0042] Among them, the upper end of the heat dissipation air pipe 6 is a closed end to prevent air flow backflow and ensure unidirectional air flow. The connection between the branch pipe 601 and the heat dissipation air pipe 6 is a downward folded inclined structure for guiding the air flow downward, which can effectively guide the air flow downward and enhance the heat dissipation effect.

[0043] Among them, the heat conducting plate 7 is made of porous aluminum alloy to increase the heat dissipation surface area and improve the heat conduction efficiency. The heat dissipation holes 701 with honeycomb pores are formed by laser 3D printing to ensure the accuracy and consistency of the heat dissipation holes 701 and improve the heat dissipation performance.

[0044] Among them, the graphene composite layer 8 is provided with heat pipes 801 distributed side by side, and the heat pipes 801 are filled with phase change working fluid. The phase change working fluid adopts organic working fluid: such as R23, R134a, R410a, R407c and other environmentally friendly refrigerants. Through the rapid thermal conductivity of the phase change working fluid, the heat of the circuit board is quickly transferred to the heat dissipation air pipe 6, thereby improving the heat dissipation efficiency.

[0045] Embodiment 2: Based on Embodiment 1, refer to Fig. 9 and Fig.10 One-way valves are provided in the inlet and outlet pipes connecting the cooling coil 9 and the circulating piston cylinder 901 to ensure that the coolant flows in one direction in the cooling coil 9 to avoid backflow. The end of the piston rod of the cooling coil 9 is vertically connected with an extension plate 5021, and the extension plate 5021 passes through the resonance frame 5 and is fixedly connected to the baffle plate 502. The baffle plate 502 drives the extension plate 5021 to move up and down during the reciprocating movement of the baffle plate 502. The piston rod of the circulating piston cylinder 901 reciprocates to transport the coolant to circulate in the cooling coil 9. The up and down movement of the baffle plate 502 drives the circulating piston cylinder 901 to work, thereby realizing the automatic circulation of the coolant and further improving the heat dissipation effect.

[0046] Among them, the upper end of the cooling air duct 902 is a shuttle-shaped variable-diameter sound vibration cavity 9022, which can adapt to sound pressure vibrations of different frequencies and improve the heat dissipation efficiency. The cooling air duct 902 is vertically filled with a wavy guide baffle 9023. The wavy structure is used to form turbulence by means of sound vibration disturbance of the airflow, break the laminar boundary layer, enhance the heat dissipation effect through turbulence, and absorb the airflow noise at the same time. The wall of the cooling air duct 902 is provided with evenly spaced air outlet holes 9021. The air outlet holes 9021 overflow the air flow to the coiled coolant return pipe, and the cooling airflow is evenly distributed to the coolant return pipe, further improving the heat dissipation effect.

[0047] Working principle of this embodiment: When the equalizer is working, the sound pressure vibration generated by its diaphragm is transmitted to the acoustic resonance cavity 2 through the concave structure ( Figure 1-Figure 3 The acoustic resonance cavity 2 adopts a vertical coaxial stepped design (at least three layers, increasing from top to bottom), which can adapt to the sound pressure energy of different frequencies, and transmit the vibration to the resonance disk 4 and the resonance frame 5 through the sound moving rod 3 (sliding vertically in the support block 301). The arc structure (upper end) of the resonance disk 4 and the convex column 401 ( Figure 6 and Fig. 9 ) focuses the sound pressure energy and reduces the reflected noise, while guiding the fins of the cone 402 to guide the airflow and sound waves downward. The up and down movement of the sound-moving rod 3 drives the leather cup 302 (narrow at the top and wide at the bottom) to compress the airflow, so that the airflow flows downward layer by layer through the neck tube 201 (wide at the top and narrow at the bottom), forming a passive heat dissipation cycle ( Fig. 9 ).

[0048] Heat is transferred from the circuit board to the graphene composite layer 8 (including heat pipe 801, filled with phase change working fluid such as R134a), and is quickly conducted to the heat dissipation air pipe 6 through the heat conduction plate 7 (porous aluminum alloy, honeycomb heat dissipation holes 701). The heat dissipation air pipe 6 is connected to each layer of the acoustic resonance cavity 2 through the branch pipe 601, and the hot air flow is guided to the outlet at the resonance frame 5. In this process, the cooling coil 9 (distributed in a snaking manner, sandwiched between the heat dissipation air pipe 6 and the heat conduction plate 7) drives the coolant to circulate through the circulating piston cylinder 901 to further absorb heat. The circulating piston cylinder 901 is linked to the baffle plate 502 (reset by the spring 503) by the extension plate 5021 to realize the automatic delivery of the coolant ( Figure 9-10 ).

[0049] At the outlet of the heat dissipation pipe 6, the vibration of the counterweight 504 drives the eccentric wheel 505 to rotate, driving the fan wheel 506 to accelerate the exhaust of hot air ( Figure 7 and Figure 8 ). At the same time, the shuttle-shaped variable-diameter sound-vibration cavity 9022 (upper end) and the wave-shaped guide baffle 9023 (vertical filling) of the cooling air duct 902 form turbulence through sound-vibration disturbance, breaking the laminar boundary layer of the air flow and improving the heat dissipation efficiency. The air outlet holes 9021 on the wall of the cooling air duct 902 evenly guide the cooling air flow to the coiled coolant return pipe to achieve a rapid cooling effect.

[0050] In the second embodiment, the inlet and outlet pipes of the cooling coil 9 are provided with a one-way valve to ensure the one-way flow of the coolant and avoid backflow. The linkage design of the circulating piston cylinder 901 and the baffle 502 further optimizes the coolant circulation efficiency, and the guide baffle 9023 of the cooling air duct 902 absorbs noise while enhancing heat dissipation through turbulence to ensure the purity of the audio signal. Through the above structure, the equalizer significantly reduces the temperature of the circuit board (the chip temperature is reduced by 33% under a 50W load) under the synergistic effect of passive acoustic heat dissipation and active cooling system, while maintaining a low noise level (≤25dB(A)), which is suitable for long-term stable operation of high-power audio equipment.

[0051] In this article, there are a few points to note:

[0052] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0053] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0054] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An equalizer capable of improving heat dissipation effect, comprising: An equalizer housing (1); an inner concave structure is provided between two diaphragms of the equalizer housing (1); an acoustic resonance cavity (2) is arranged in the inner concave portion through a support frame, and is characterized in that the acoustic resonance cavity (2) is vertically coaxial and has at least three stepped portions, and the acoustic resonance cavity (2) increases in size from top to bottom; a sound-actuating rod (3) is vertically slidably provided at the coaxial portion of the multiple layers of the acoustic resonance cavity (2); a resonance disk (4) is provided at the upper end of the acoustic resonance cavity (2); a resonance frame (5) is provided at the lower end of the acoustic resonance cavity (2); the sound-actuating rod (3), the resonance disk (4) and the resonance frame (5) are interlocked through sound pressure vibration to form an acoustic resonance mechanism; a heat dissipation air pipe (6) is provided in the equalizer housing (1); the heat dissipation air pipe (6) is connected to the acoustic resonance cavity (2) of each layer through a branch pipe (601); the outlet of the heat dissipation air pipe (6) The heat dissipation pipe (6) extends downward to the resonance frame (5); a heat conduction plate (7) is vertically supported in the cavity of the equalizer housing (1) on the inner side of the heat dissipation pipe (6); a graphene composite layer (8) is attached to one end of the heat conduction plate (7) away from the heat dissipation pipe (6); and the other end of the graphene composite layer (8) extends to the bottom of the circuit board in the equalizer; a cooling coil (9) distributed in a serpentine shape is provided in the interlayer between the heat dissipation pipe (6) and the heat conduction plate (7); the upper end of the cooling coil (9) is a coolant return pipe; the lower end of the cooling coil (9) is a coolant inlet pipe; a circulating piston cylinder (901) connected to the inlet and outlet pipes of the cooling coil (9) is hung on one side of the resonance frame (5); the coolant return pipe of the cooling coil (9) is spirally coiled on the cooling air pipe (902); and the cooling air pipe (902) is fixed side by side on one side of the acoustic resonance cavity (2).

2. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: Adjacent acoustic resonance cavities (2) are connected via neck tubes (201) that are wide at the top and narrow at the bottom. The upper end edge of the neck tube (201) at the top is an outward-turned structure. The sound-actuating rod (3) is located in the middle of each neck tube (201), and the resonance disk (4) is located at the neck tube (201) at the top.

3. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: A support block (301) is fixedly provided horizontally at a position corresponding to the location of the sound-moving rod (3) in the inner cavity of the acoustic resonance cavity (2) on each side. The sound-moving rod (3) slides vertically in the support block (301). A leather cup (302) which is narrow at the top and wide at the bottom is fixedly provided at an upper position of the sound-moving rod (3) in each layer of the acoustic resonance cavity (2). The leather cup (302) moves up and down with the sound-moving rod (3) to drive the airflow downward. A sound-transmitting bone strip (303) is provided at a position corresponding to each branch pipe (601) on the support block (301). The sound-transmitting bone strip (303) extends to the deep inner cavity of the branch pipe (601).

4. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: The upper end of the resonance disk (4) is arc-shaped, and the bottom surface of the resonance disk (4) is evenly spaced with sound-absorbing convex columns (401). A guide cone (402) that is wide at the top and narrow at the bottom is fixedly provided at the connection between the bottom of the resonance disk (4) and the sound-moving rod (3), and fins that guide airflow and sound downward are distributed in an annular manner on the guide cone (402).

5. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: A rectangular parallelepiped strip connecting rod (501) having an anti-rotation function is vertically slidably installed in the resonance frame (5); the upper end of the connecting rod (501) is fixedly connected to the lower end of the sound-moving rod (3); a baffle (502) is fixedly provided at the upper end of the connecting rod (501); a spring (503) is provided on the connecting rod (501) between the baffle (502) and the resonance frame (5); a counterweight (504) is fixedly provided at the lower end of the connecting rod (501); the counterweight (504) is rotatably connected to an eccentric wheel (505) via a rotating shaft along the outlet direction of the heat dissipation air pipe (6); the eccentric wheel (505) is symmetrically provided with two wheels disposed at both ends of the rotating shaft; a fan wheel (506) is also provided on the rotating shaft near the eccentric wheel (505); the fan wheel (506) rotates with the eccentric wheel (505) to accelerate and draw air at the outlet of the heat dissipation air pipe (6) outward.

6. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: The upper end of the heat dissipation air pipe (6) is a closed end, and the connection between the branch pipe (601) and the heat dissipation air pipe (6) is a downward folded inclined structure that facilitates guiding the airflow downward.

7. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: The heat conducting plate (7) is made of porous aluminum alloy, and has heat dissipation holes (701) with honeycomb pores formed by laser 3D printing.

8. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: The graphene composite layer (8) is provided with heat pipes (801) distributed side by side, and the heat pipes (801) are filled with a phase change working medium.

9. The equalizer capable of improving heat dissipation effect according to claim 5, characterized in that: One-way valves are provided in the inlet and outlet pipes connecting the cooling coil (9) and the circulating piston cylinder (901); the end of the piston rod of the cooling coil (9) is vertically connected to an extension plate (5021); the extension plate (5021) passes through the resonance frame (5) and is fixedly connected to the baffle plate (502); the baffle plate (502) drives the extension plate (5021) to move reciprocatingly up and down during the process; the piston rod of the circulating piston cylinder (901) moves reciprocatingly to transport coolant to circulate in the cooling coil (9).

10. The equalizer capable of improving heat dissipation effect according to claim 1, characterized in that: The upper end of the cooling air duct (902) is a shuttle-shaped variable-diameter sound-vibration cavity (9022), and the cooling air duct (902) is vertically filled with a wavy guide baffle (9023). The wavy structure is used to form turbulence by means of sound-vibration disturbance of the airflow, thereby breaking the laminar boundary layer. The wall of the cooling air duct (902) is provided with evenly spaced air outlet holes (9021), and the air outlet holes (9021) overflow the airflow to the coiled coolant return pipe.

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