A sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device

Abstract

This invention discloses a sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device, relating to the field of high-efficiency heat exchange technology. The invention includes an ultrasonic drive power supply that powers a vibrating structure to generate ultrasonic vibration; the vibrating structure is connected to a heat dissipation section oscillator structure via a rubber flexible joint; an elastic device is placed between the heat dissipation section oscillator structure and the heat sink structure; in the heat sink structure, a base heat source serving as the thermal contact surface is connected to straight fins via a hinge structure, and a heat dissipation fan box is installed on the side of the heat sink structure with its air ducts facing the gap between the straight fins. By optimizing the natural convection of the heat exchange surface, the problem of uneven heating of the straight fins during the use of the phase change heat sink structure, leading to abnormal changes in heat exchange capacity, can be solved.

Description

Technical Field

[0001] This invention relates to the field of high-efficiency heat exchange technology, and in particular to a sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device. Background Technology

[0002] With the vigorous development of modern industry and the continuous progress of science and technology, human society's demand for energy is increasing. In recent years, energy issues have become a global concern. In the field of energy utilization, heat exchangers are the most common and important unit equipment; therefore, improving their heat exchange efficiency is particularly important.

[0003] In practical engineering, heat exchanger wall vibration is an unavoidable phenomenon. Some vibrations are caused by the operation of the power unit during equipment operation, while others are induced by fluid flow. It has long been recognized that vibration can enhance heat transfer; as early as 1923, scholars conducted research on enhancing heat transfer through vibration of heat exchanger surfaces in static fluids. Since then, vibration has been applied in numerous experimental studies to investigate its influence on the convective heat transfer effect between the heat exchanger surface and the fluid. Related literature indicates that under natural convection conditions, heat exchanger wall vibration can improve the heat transfer effect by 30% to 20%.

[0004] 000%; while under forced convection conditions, it can be increased by 20% to 400%.

[0005] Traditional phase change heat sinks still face significant challenges, such as the poor thermal conductivity of phase change materials, which limits their further applications. Currently, there are two main methods to address this: adjusting the heat exchange structure of the phase change heat sink and optimizing the material properties of the phase change material. Inserting metal fins into the phase change heat sink structure can significantly increase the internal heat exchange area, and the high thermal conductivity of the metal fins can also effectively accelerate the heat storage rate of the system. However, the straight fins have limited ability to enhance natural convection, leading to uneven heating and uneven solid-liquid distribution on both sides of the fins, causing the fins to tilt under pressure. This severely impacts the heat dissipation capacity of the phase change heat sink structure.

[0006] Therefore, optimizing the natural convection of the heat exchange surface to solve the problem of abnormal changes in heat exchange capacity caused by uneven heating of the straight fins during the use of phase change heat sink structures has become a direction that needs to be studied. Summary of the Invention

[0007] The embodiments of the present invention provide a sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device, which can solve the problem of abnormal changes in heat exchange capacity caused by uneven heating of straight fins during the use of phase change heat sink structures by optimizing the natural convection of the heat exchange surface.

[0008] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0009] A sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device includes: a vibration structure (1), an ultrasonic driving power supply (2), a rubber flexible joint (3), straight fins (4), a heat sink structure (5), a base heat source (6), a hinge structure (7), an elastic device (8), a heat dissipation box (9), and a dissipation section oscillator structure (10); the ultrasonic driving power supply (2) supplies power to the vibration structure (1) so that the vibration structure (1) can generate ultrasonic vibration; the vibration structure (1) is connected to the dissipation section oscillator structure (10) through the rubber flexible joint (3); the elastic device (8) is placed between the dissipation section oscillator structure (10) and the heat sink structure (5); in the heat sink structure (5), the base heat source (6), which serves as the thermal contact surface, is connected to the straight fins (4) through the hinge structure (7), and the heat dissipation box (9) is installed on the side of the heat sink structure (5) with the air duct of the heat dissipation box (9) facing the gap between the straight fins (4).

[0010] The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device provided in this embodiment of the invention adopts a sandwich-type longitudinal vibration structure (1), a phase change heat sink structure (5), and a general-purpose air-cooling device. The vibration structure (1) is selected as a sandwich-type piezoelectric ultrasonic transducer. The vibration structure (1) of this invention adopts a stepped distribution. The longitudinal vibrator (1-1) of the energy-concentrating section on the first step transducer side is attached to the transducer. In this process, it fully absorbs ultrasonic energy. At the same time, the longitudinal vibrator of this step is connected to the dispersed vibrator structure of the next step through a rubber flexible joint (3) to transmit the vibration to the next step. The next step is the energy-dissipating section longitudinal vibrator, which transmits the vibration to the longitudinal vibrator structure of other structures. Since the traditional vibrator is generally a single structure, it faces defects such as uneven and insufficient vibration propagation surface. In order to fully transmit the vibration, the longitudinal vibrator of the energy-dissipating section is branched into multiple segments. The vertical fins (4) are arranged and flexibly connected to the vibrator structure perpendicularly. An elastic device (8) is connected between the two. The longitudinal oscillator structure of the energy dissipation section transmits vibration to the elastic device (8) through vertical impact. The elastic device (8) then transmits the vibration to the fins, which vibrate to enhance natural convection heat transfer. To maintain the temperature of electronic components within a safe range, timely heat dissipation is crucial. Natural convection at the top of the phase change heat sink is insufficient; therefore, forced natural convection cooling is proposed. A good airflow channel is formed between the exposed fins and the oscillator structure. Therefore, implementing air cooling at this location can not only dissipate heat from the phase change heat sink structure (5) in a timely manner but also cool the top, protecting the oscillator structure from temperature-related damage. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A perspective view of the overall structure provided in an embodiment of the present invention;

[0013] Figure 2 A simplified diagram of the sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation structure provided in an embodiment of the present invention;

[0014] Figure 3 This is a right view of the sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation structure provided in an embodiment of the present invention;

[0015] Figure 4 This is a front view of the sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation structure provided in an embodiment of the present invention;

[0016] Figure 5 This is a longitudinal section view of the sandwich-type longitudinal ultrasonic vibration structure provided in an embodiment of the present invention;

[0017] Figure 6 A simplified structural diagram of the fin-end elastic device (8) provided in an embodiment of the present invention;

[0018] Figure 7 A simplified structural diagram of the hinge device provided in an embodiment of the present invention;

[0019] Figure 8 A longitudinal section view of another sandwich-type longitudinal ultrasonic vibration structure provided in an embodiment of the present invention;

[0020] The reference numerals in the attached figures represent: vibration structure (1), longitudinal vibrator of the energy-concentrating section (1-1), dispersed vibrator structure of the energy-dissipating section (1-2), rubber ring (1-3) and sandwich ultrasonic transducer (1-4), ultrasonic drive power supply (2), rubber flexible joint (3), straight fin (4), heat sink structure (5), base heat source (6), hinge structure (7), hinge body (7-1), mandrel (7-2), hinge seat (7-3), elastic device (8), vibration receiving end (8-1), vertical end of vibration transmission (8-2), horizontal structure of vibration transmission (8-3), heat dissipation box (9), and vibrator structure of the energy-dissipating section (10). Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Embodiments of the present invention will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of the present invention means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or couplings. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0022] In phase change heat sinks, the low thermal conductivity of phase change materials limits their further application. Adding fins to enhance natural convection heat transfer surfaces strengthens heat transfer. Studies have shown that both heat transfer surface vibration and fluid vibration enhance both natural and forced convection heat transfer in single-phase fluids. Vibration increases inter-fluid disturbance, interfering with the formation and development of the boundary layer, thereby reducing thermal resistance and enhancing heat transfer. Therefore, the design concept of this embodiment mainly involves adding an ultrasonic vibration structure, which indirectly induces heat transfer surface vibration to enhance heat transfer.

[0023] This invention provides a sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device, such as... Figure 1-5 As shown, it includes: a vibration structure (1), an ultrasonic drive power supply (2), a rubber flexible joint (3), a straight fin (4), a heat sink structure (5), a base heat source (6), a hinge structure (7), an elastic device (8), a heat dissipation box (9), and an energy dissipation section oscillator structure (10).

[0024] The ultrasonic drive power supply (2) supplies power to the vibration structure (1) so that the vibration structure (1) can generate ultrasonic vibration;

[0025] The vibration structure (1) is connected to the energy dissipation section oscillator structure (10) through a rubber flexible joint (3);

[0026] The elastic device (8) is placed between the energy dissipation section oscillator structure (10) and the heat sink structure (5) to ensure that the energy dissipation section oscillator structure (10) vibrates normally while the ultrasonic waves are transmitted, and the vibration amplitude is not too intense to cause damage to the oscillator structure.

[0027] In the heat sink structure (5), the base heat source (6), which serves as the heat contact surface, is connected to the straight fins (4) via a hinge structure (7). The heat dissipation box (9) is installed on the side of the heat sink structure (5), and the air duct of the heat dissipation box (9) faces the gap between the straight fins (4). Specifically, the base heat source (6) may have an electric heating element on the base.

[0028] Optionally, the vibration structure mainly includes: a transducer structure and an oscillator structure. In this embodiment, the ultrasonic transducer, as part of the vibration structure, converts electrical energy into ultrasonic waves. This embodiment uses an improved vibration structure (1), including: a longitudinal oscillator in the energy-concentrating section (1-1), a dispersed oscillator structure in the energy-dissipating section (1-2), and a sandwich-type piezoelectric ultrasonic transducer (1-4). The oscillator structure in the vibration structure (1) is a hollow cylinder. The sandwich-type ultrasonic transducer (1-4) inside it contacts the hollow cylindrical longitudinal oscillator in the energy-concentrating section (1-1) through a rubber ring (1-3), so as to appropriately reduce the vibration amplitude while absorbing ultrasonic waves to protect the oscillator structure from damage. For example... Figure 8 The diagram shows a further improved vibration structure, specifically a cross-sectional view of the ultrasonic structure and the longitudinal vibrator of the energy-concentrating section. The sandwich-type ultrasonic transducer, a device that converts electrical energy input from the ultrasonic power supply into ultrasonic energy, is a cylindrical structure with its internal circuitry integrated using existing technology. The longitudinal vibrator of the energy-concentrating section is a hollow cylindrical structure that connects the vibrator structure and the ultrasonic transducer. A rubber ring is placed between them (this rubber ring is an internally laid cylindrical structure and does not overlap with other elastic devices or rubber structures). The longitudinal vibrator of the energy-concentrating section absorbs ultrasonic energy and transmits it to the vibrator structure of the energy-dissipating section.

[0029] In this embodiment, the longitudinal vibrator (1-1) of the energy-concentrating section and the dispersed vibrator structure (1-2) of the energy-dissipating section are connected by a rubber flexible joint (3); the inner side of the longitudinal vibrator (1-1) of the energy-concentrating section is fitted with a sandwich-type piezoelectric ultrasonic transducer (1-4). Specifically, in the vibration structure (1), the longitudinal vibrator (1-1) of the energy-concentrating section is a hollow cylindrical structure, and the internal space of the cylinder serves as the inner channel of the vibrator, with a diameter of m; the dispersed vibrator structure (1-2) of the energy-dissipating section is also a hollow cylindrical structure with a diameter of n, and the distance between two adjacent dispersed vibrator structures (1-2) of the energy-dissipating section is q; in the preferred embodiment, the material used to make the longitudinal vibrator (1-1) of the energy-concentrating section and the dispersed vibrator structure (1-2) of the energy-dissipating section is copper. For example, the ultrasonic vibration side includes two parts: an energy-concentrating part and an energy-dissipating part. The energy-concentrating section includes an ultrasonic drive power supply (2), a sandwich-type piezoelectric ultrasonic transducer, and an energy-concentrating section oscillator structure. In this stage, the ultrasonic drive power supply (2) converts electrical energy into a high-frequency alternating current signal and transmits it to the ultrasonic transducer. Simultaneously, the ultrasonic transducer converts the high-frequency alternating current signal input from the ultrasonic drive power supply (2) into high-intensity mechanical vibration work and transmits it to the longitudinal oscillator (1-1) of the energy-concentrating section. To fully receive the mechanical work from the ultrasonic transducer, the inner side of the longitudinal oscillator (1-1) of the energy-concentrating section is fitted with the transducer structure. The longitudinal dimension of the inner channel of the oscillator is m, and a rubber ring (1-3) is provided between the oscillator structure and the transducer, such as... Figure 5 As shown.

[0030] In the preferred embodiment, the dimensional parameters of the vibration structure (1) satisfy nx+(n-1)q≤m, where x represents the number of dispersed oscillator structures (1-2) in the energy dissipation section. Specifically, in the phase change heat sink stage of the heat storage section, to compensate for the insufficient thermal conductivity of the phase change material, straight fins (4) are inserted into the phase change heat sink structure (5) to increase the heat exchange area and enhance the heat exchange rate. At the same time, the height of the straight fins (4) is required to exceed the heat sink structure (5) and match the oscillator end. To solve the problem that the straight fin (4) end has limited enhanced convection heat transfer capacity during the heat exchange process, resulting in uneven heating and uneven solid-liquid properties of paraffin on both sides of the fin, which causes the fin to tilt under pressure and affect the heat transfer, this invention proposes a sandwich-type ultrasonic longitudinal vibration structure (1), which includes an energy-concentrating part and an energy-dissipating part. The energy-concentrating section includes an ultrasonic driving power supply (2), a sandwich-type piezoelectric ultrasonic transducer, and an energy-concentrating section oscillator structure. In this stage, the ultrasonic driving power supply (2) converts electrical energy into a high-frequency AC signal and transmits it to the ultrasonic transducer. At the same time, the ultrasonic transducer converts the high-frequency AC signal input from the ultrasonic driving power supply (2) into high-intensity mechanical vibration work and transmits it to the energy-concentrating section oscillator structure. To fully receive the mechanical work from the ultrasonic transducer, the inner side of the oscillator structure in this stage must fit the transducer structure. The inner diameter of the oscillator is m, and a rubber ring (1-3) is provided between the oscillator structure and the transducer. In the longitudinal oscillator of the energy-dissipating section, in order to make the vibration transmission uniform, it is decided to use the form of parallel vibration of multi-end oscillators to dissipate energy. There are x oscillators in the longitudinal oscillator of the energy-dissipating section, where the width of each oscillator is n, nx < m, the spacing between adjacent oscillator structures is q, and nx + (n-1)q ≤ m. Where n, q, m, and x are all integer real numbers greater than 0. To prevent vibration from being affected by other oscillators, adjacent oscillators must not collide within this interval. Simultaneously, to avoid vibration transmission being affected by the lack of a buffer section at the interface between the longitudinal oscillator in the energy dissipation section and the energy focusing section, the structure of the longitudinal oscillator in the energy dissipation section must be flexibly connected to the energy focusing section to ensure normal longitudinal vibration of the oscillator.

[0031] In this embodiment, all the straight wings (4) are arranged parallel to each other and perpendicular to the energy dissipation segment oscillator structure (10); the straight wings (4) extend upward from the base heat source (6), and the height of the straight wings (4) reaches the vibration range of the energy dissipation segment longitudinal oscillator structure (10); the vibration of the energy dissipation segment longitudinal oscillator structure (10) is transmitted to the straight wings (4) through the elastic device (8). The elastic device (8) is an F-shaped structure, and the top of the elastic device (8) is a first-order horizontal vibration transmission structure, which bears the vibration of the energy dissipation segment longitudinal oscillator structure (10); the vibration is transmitted to the second-order horizontal vibration transmission structure, which is fixedly connected to the side wall of the straight wing (4). Specifically, as shown in the figure... Figure 3 , Figure 6As shown, the elastic structure on the fin side is partially F-shaped. The upper end receives vibration and transmits it to the second horizontal structure. The second step bridges the side of the straight fin (4), thus transmitting the vibration to that surface. The elastic structure is evenly distributed on the side of the fin, thus transmitting the vibration evenly to the fin side. Regarding the limiting effect, the maximum vibration distance of the upper step fin is the elastic device (8) from the fin to the next step, thus limiting the amplitude. The straight fin (4) is evenly arranged parallel to the direction perpendicular to the oscillator. The straight fin (4) extends upward from the base, and the height is required to reach the vibration range of the oscillator to ensure that the oscillator does not vibrate in vain. At the same time, it is required to install the elastic device (8) at the vibration junction of the oscillator structure and the straight fin (4) to achieve the effect of fully transmitting the vibration energy to the fin structure. The elastic device (8) is an F-shaped structure. The top end receives the vibration transmitted by the vibration source and then transmits the vibration to the second horizontal vibration transmission structure. This section is connected to the side wall of the straight fin (4), and then transmits the vibration to the side of the fin. The elastic device (8) is evenly arranged to uniformly transmit vibration to the straight fin (4) end, achieving the best vibration transmission effect. At the same time, in order to avoid the problem of increased thermal conductivity gap caused by large vibration amplitude of the fin structure, the above-mentioned elastic device (8) is considered as a limiting device, and the factor of limiting the vibration amplitude of the fin is taken into account during the arrangement of the elastic device (8).

[0032] In this embodiment, the hinge structure (7) includes: a hinge body (7-1), a spindle (7-2), and a hinge base (7-3); the hinge base (7-3) is fixed to the base heat source (6), one end of the hinge body (7-1) is connected to the straight fin (4), and the other end is connected to the spindle (7-2). In a preferred embodiment, thermal grease is applied to the hinge structure (7). Specifically, to ensure that the fin can vibrate freely, the bottom of the straight fin (4) is connected to the heat sink base by a hinge. The hinge structure (7) includes a hinge body (7-1), a spindle (7-2), a hinge base, etc. The hinge base is fixed to the base. One end of the hinge body (7-1) is connected to the fin, and the other end is connected to the spindle (7-2). At this time, the hinge base not only plays a fixing role but also plays a role in conducting heat to the fin. To enhance heat conduction, thermal grease can be applied here. To ensure normal fin vibration, hinges are evenly arranged according to the actual size of the fins. This way, when vibration is transmitted to the fin sidewalls, the fins drive the hinge body (7-1) to vibrate. The maximum amplitude range is the elastic device (8) from the current fin to the next fin, ensuring smooth fin vibration and reasonable heat conduction gaps, thereby achieving the purpose of vibration-enhanced heat dissipation. In practical applications, the phase change heat sink structure (5) still has the problem of heat not being dissipated quickly. Due to the combined enhanced heat exchange of the straight fins (4) and the vibration structure (1), the natural convection of paraffin inside the heat sink is enhanced, and the paraffin absorbs a large amount of heat during this stage by exerting its latent heat effect. To dissipate the large amount of heat absorbed during this stage as quickly as possible, this invention proposes the following heat dissipation method: Figure 1An active air-cooled heat dissipation device is installed at the gap between the oscillator structure and the straight fin (4). Since the channel formed by the oscillator and the straight fin (4) connects to the top of the phase change heat sink and has a large heat exchange area, it becomes a good air duct for air entry. Since a large amount of heat is discharged from the surface of the straight fin (4) and the top of the heat sink structure (5), the fan can dissipate a large amount of heat with less energy consumption, thereby achieving a good heat dissipation effect. Therefore, the structure is further optimized, and the energy dissipation section oscillator structure (10) is evenly arranged with obvious intervals. During the vibration process, adjacent oscillators will not collide and can evenly transmit the vibration to other structures. The elastic device (8) serves as the connection device between the energy dissipation section oscillator structure (10) and the straight fin (4). While transmitting vibration, it appropriately reduces vibration and prevents high temperature from affecting the oscillator structure. At the same time, the elastic device (8) is evenly arranged here, which can transmit uniform vibration to the heat sink structure (5). Since a good air passage is formed between the straight fin (4) and the elastic device (8), a heat dissipation box (9) is set here to quickly dissipate heat.

[0033] In this embodiment, a sandwich-type longitudinal vibration structure (1), a phase change heat sink structure (5), and a general-purpose air-cooling device are used. The vibration structure (1) uses a sandwich-type piezoelectric ultrasonic transducer. The vibration structure (1) of this invention adopts a stepped distribution. The longitudinal vibrator (1-1) of the energy-concentrating section on the first step of the transducer side is attached to the transducer. In this process, it fully absorbs ultrasonic energy. At the same time, the longitudinal vibrator of this step is connected to the dispersed vibrator structure of the next step through a rubber flexible joint (3) to transmit the vibration to the next step. The next step is the energy-dissipating section longitudinal vibrator, which transmits the vibration to the longitudinal vibrator structure of other structures. Since the traditional vibrator is generally a single structure, it faces defects such as uneven and insufficient vibration propagation surface. In order to fully transmit the vibration, the longitudinal vibrator of the energy-dissipating section is branched into multiple segments. The vertical fins (4) are arranged and flexibly connected to the vibrator structure perpendicularly. An elastic device (8) is connected between the two. The longitudinal oscillator structure of the energy dissipation section transmits vibration to the elastic device (8) through vertical impact. The elastic device (8) then transmits the vibration to the fins, which vibrate to enhance natural convection heat transfer. To maintain the temperature of electronic components within a safe range, timely heat dissipation is crucial. Natural convection at the top of the phase change heat sink is insufficient; therefore, forced natural convection cooling is proposed. A good airflow channel is formed between the exposed fins and the oscillator structure. Therefore, implementing air cooling at this location can not only dissipate heat from the phase change heat sink structure (5) in a timely manner but also cool the top, protecting the oscillator structure from temperature-related damage.

[0034] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. The above descriptions are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device, characterized in that, include: Vibration structure (1), ultrasonic drive power supply (2), rubber flexible joint (3), straight fin (4), heat sink structure (5), base heat source (6), hinge structure (7), elastic device (8), heat dissipation box (9) and energy dissipation section oscillator structure (10). The ultrasonic drive power supply (2) supplies power to the vibrating structure (1) so that the vibrating structure (1) can generate ultrasonic vibration; The vibration structure (1) is connected to the energy dissipation section oscillator structure (10) through a rubber flexible joint (3); An elastic device (8) is placed between the energy dissipation section oscillator structure (10) and the heat sink structure (5); In the heat sink structure (5), the base heat source (6), which serves as the heat contact surface, is connected to the straight fins (4) via a hinge structure (7). The heat dissipation box (9) is installed on the side of the heat sink structure (5), and the air duct of the heat dissipation box (9) faces the gap between the straight fins (4). The energy dissipation segment oscillator structure (10) is composed of the energy dissipation segment distributed oscillator structure (1-2); The vibration structure (1) includes: a longitudinal oscillator in the energy-concentrating section (1-1), a dispersed oscillator structure in the energy-dissipating section (1-2), and a sandwich-type piezoelectric ultrasonic transducer (1-4). The shape of the oscillator structure in the vibration structure (1) is a hollow cylinder. The sandwich ultrasonic transducer (1-4) inside it is in contact with the hollow cylindrical energy-concentrating longitudinal oscillator (1-1) through a rubber ring (1-3).

2. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 1, characterized in that, The longitudinal oscillator (1-1) of the energy-concentrating section and the dispersed oscillator structure (1-2) of the energy-dissipating section are connected by a rubber flexible joint (3). The inner side of the longitudinal vibrator (1-1) of the energy-concentrating section is fitted with a sandwich-type piezoelectric ultrasonic transducer (1-4).

3. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 1, characterized in that, In the vibration structure (1), the longitudinal oscillator (1-1) of the energy-concentrating section is a hollow cylindrical structure, and the internal space of the cylinder serves as the inner channel of the oscillator, with a diameter of m; The energy dissipation segment dispersed oscillator structure (1-2) is also a hollow cylindrical structure with a diameter of n and a spacing of q between two adjacent energy dissipation segment dispersed oscillator structures (1-2).

4. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 3, characterized in that, The materials used to make the longitudinal oscillator (1-1) of the energy-concentrating section and the dispersed oscillator structure (1-2) of the energy-dissipating section are both metallic copper.

5. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 3, characterized in that, In the vibrating structure (1), the size parameter satisfies nx+(n-1)q≤m, where x represents the number of energy dissipation segment dispersed oscillator structures (1-2).

6. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 1, characterized in that, All the straight wings (4) are arranged parallel to each other and are perpendicular to the energy dissipation segment oscillator structure (10); The straight wing (4) extends upward from the base heat source (6), and the height of the straight wing (4) reaches the vibration range of the longitudinal oscillator structure (10); The vibration of the longitudinal oscillator structure (10) is transmitted to the straight wing (4) through the elastic device (8).

7. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 6, characterized in that, The elastic device (8) has an F-shaped structure. The top of the elastic device (8) is a first-order horizontal vibration transmission structure that bears the vibration of the longitudinal oscillator structure (10). The vibration is transmitted to the second-order horizontal vibration transmission structure, which is fixedly connected to the side wall of the straight wing (4).

8. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 7, characterized in that, The hinge structure (7) includes: hinge body (7-1), spindle (7-2) and hinge seat (7-3); The hinge seat (7-3) is fixed to the base heat source (6), one end of the hinge body (7-1) is connected to the straight wing (4), and the other end is connected to the spindle (7-2).

9. The sandwich-type longitudinal ultrasonic vibration enhanced heat dissipation device according to claim 8, characterized in that, Apply thermal grease to the hinge structure (7).

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