Low-radiation high-safety power adapter

Abstract

The utility model discloses a low-radiation high-safety power adapter, which comprises an outer shell, an installation cavity is arranged in the outer shell, a protective partition plate is fixedly arranged in the installation cavity, the protective partition plate divides the installation cavity into an upper cavity and a lower cavity which are relatively independent, a PCB (printed circuit board) is arranged in the lower cavity, and the upper cavity and the lower cavity are communicated with each other. A transformer part, an inductor part and an air blowing part are arranged on the PCB part, and a heat dissipation installation groove used for containing the air blowing part, a transformation installation groove used for containing the transformer part and an inductor installation groove used for containing the inductor part are formed in the lower end face of the protection partition plate. According to the utility model, the electromagnetic shielding performance and the thermal management efficiency are obviously optimized through the precise structural design, and the electromagnetic shielding layers are formed on the peripheries of the transformer part and the inductance part through the independent closed structures of the transformation protection chamber and the inductance protection chamber; and the magnetic flux leakage radiation protection partition plate is effectively prevented from forming a secondary electromagnetic shielding layer on the electronic element in the lower cavity in a high-frequency working state, so that the magnetic flux leakage radiation is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of power adapter technology, specifically to a low-radiation, high-safety power adapter. Background Technology

[0002] As described in the published patent CN216774600U, electromagnetic radiation is the transmission of momentum and energy in space in the form of waves by electric and magnetic fields that oscillate in the same direction and are perpendicular to each other. The direction of propagation is perpendicular to the plane formed by the electric and magnetic fields. The interaction and change of the electric and magnetic fields generate electromagnetic waves, which are emitted or propagated into the air to form electromagnetic radiation.

[0003] Mobile phones, desk lamps, power strips, chargers, computers, printers, hair dryers, and other household and office appliances and electronic devices generate extremely low-frequency electromagnetic radiation during use. This radiation induces an electromotive force in the human body. The induced electromotive force is relatively large, while the human body's own bioelectricity has a very low frequency. Long-term exposure to electromagnetic radiation can lead to bioelectrical disorders, resulting in sub-health conditions such as blocked meridians, poor blood circulation, endocrine imbalances, weakened immunity, inflammation, and pain. It can even lead to various diseases.

[0004] In summary, existing power adapters may experience magnetic leakage during use due to manufacturing processes and assembly issues. The rapid switching (nanosecond-level rise time) of switching devices (such as MOSFETs) in the power adapter can cause low-frequency leakage magnetic leakage to generate high-frequency harmonics, which form a radiation frequency band through Fourier transform. Since power adapters (such as computer monitor power adapters) generally operate for a long time and are close to the human body, they can cause radiation damage to people who work in front of computers for extended periods. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-radiation, high-safety power adapter includes a housing, an installation chamber inside the housing, and a protective partition fixedly installed inside the installation chamber.

[0008] The protective partition divides the installation chamber into a relatively independent upper chamber and a lower chamber.

[0009] The lower cavity is equipped with a PCB component, on which a transformer component, an inductor component, and a blower component are mounted;

[0010] The lower end face of the protective partition is provided with a heat dissipation mounting groove for accommodating the blower component, a transformer mounting groove for accommodating the transformer component, and an inductor mounting groove for accommodating the inductor component.

[0011] A transformer protection component is fixedly provided around the periphery of the transformer mounting slot. The transformer protection component and the transformer mounting slot cooperate to form a transformer protection chamber. A first heat conduction channel is opened between the inner bottom surface of the transformer mounting slot and the inner bottom surface of the heat dissipation mounting slot.

[0012] An inductor protection component is fixed around the periphery of the inductor mounting slot. The inductor protection component and the inductor mounting slot cooperate to form an inductor protection chamber. A second heat conduction channel is opened between the inner bottom surface of the inductor mounting slot and the inner bottom surface of the heat dissipation mounting slot. A heat conduction component connected within the second heat conduction channel is provided in the inductor mounting slot and the heat dissipation mounting slot.

[0013] The outer casing has a first air duct on each side that communicates with the lower chamber, a second air duct on the side wall of the heat dissipation mounting slot that communicates with the upper chamber, and a third air duct on the side wall of the outer casing that communicates with the upper chamber and is aligned with the second air duct.

[0014] As a further embodiment of this utility model: the transformer protection assembly includes a transformer protection shell fixedly surrounding the periphery of the transformer mounting groove, and a continuous permalloy layer is attached to the inner wall of the transformer protection shell. The permalloy layers on adjacent inner walls are bonded and fixed with conductive adhesive to ensure grounding continuity.

[0015] The surface of the permalloy layer is covered with a continuous copper-aluminum plating layer, and grounding pins are spaced apart on the surface of the copper-aluminum plating layer. The grounding pins are electrically connected to the grounding terminal of the PCB.

[0016] As a further embodiment of this utility model: the inductor protection component includes an inductor protection shell fixedly surrounding the periphery of the inductor mounting groove. The inner wall of the inductor protection shell is coated with a ferrite coating, and the outer side of the ferrite coating is covered with a conductive copper paint layer. The edge of the shell is provided with a grounding strip that is electrically connected to the ferrite coating and the conductive copper paint layer, and the grounding strip is electrically connected to the PCB grounding terminal.

[0017] As a further embodiment of this utility model: a thin metal sheet layer is laid on the upper surface of the protective partition.

[0018] As a further embodiment of this utility model: the heat-conducting component includes a first heat-conducting plate fixed in the heat dissipation mounting groove, a second heat-conducting plate fixed in the inductor mounting groove, and a third heat-conducting plate disposed in the second heat-conducting channel to connect the first heat-conducting plate and the second heat-conducting plate.

[0019] As a further embodiment of this utility model: the first heat-conducting plate includes an L-shaped heat-conducting plate, one end of the third heat-conducting plate extends into the transformer mounting groove and communicates with the L-shaped heat-conducting plate, the inner wall of the heat dissipation mounting groove includes a first inner wall surface communicating with the first heat-conducting channel, a second inner wall surface communicating with the second air duct, a third inner wall surface communicating with the second heat-conducting channel, and a fourth inner wall surface connecting the second inner wall surface and the third inner wall surface, the L-shaped heat-conducting plate is attached to the third inner wall surface and the fourth inner wall surface of the heat dissipation mounting groove.

[0020] As a further embodiment of this utility model: the second heat-conducting plate includes a U-shaped snap-fit ​​plate, one end of the third heat-conducting plate extends into the inductor mounting groove and communicates with the U-shaped snap-fit ​​plate, and the U-shaped snap-fit ​​plate is snapped and attached to the outer wall of the inductor.

[0021] As a further embodiment of this utility model: a fourth air duct is pre-set between the end of the protective partition away from the heat dissipation mounting groove and the inner wall of the mounting chamber, and the fourth air duct connects the upper chamber and the lower chamber.

[0022] As a further embodiment of this utility model: a protective mesh cover is installed on the third air duct.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This utility model power adapter significantly optimizes electromagnetic shielding performance and thermal management efficiency through precise structural design. By using the independent closed structure of the transformer protection chamber and the inductor protection chamber, an electromagnetic shielding layer is formed around the transformer and inductor components, effectively suppressing leakage magnetic radiation under high-frequency operating conditions. The protective partition adopts a layered isolation strategy, configuring the high-power transformer components, inductor components and blower cooling system in independent functional slots in the lower chamber. The protective partition forms a secondary electromagnetic shielding layer for the electronic components in the lower chamber, thereby further reducing leakage magnetic radiation.

[0025] This design physically isolates high-frequency components from heat dissipation channels, preventing electromagnetic radiation diffusion caused by hot airflow disturbances. At the same time, the structural reinforcement design between the protective partition and the outer casing enhances the shock and vibration resistance of the internal components, ensuring long-term stable operation under high load conditions. The overall solution achieves a multi-dimensional balance of electromagnetic compatibility, heat dissipation performance and mechanical reliability within a compact space, making it suitable for electronic equipment applications with stringent safety and low radiation requirements. Attached Figure Description

[0026] Figure 1 This is a three-dimensional view of the internal structure of this utility model;

[0027] Figure 2 This is a three-dimensional view of the internal structure of the present invention with a protective partition;

[0028] Figure 3This is a top view of the internal structure of the present invention with a protective partition.

[0029] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0030] Figure 5 This is the left view of this utility model;

[0031] Figure 6 yes Figure 4 The three-dimensional perspective of the sectional view;

[0032] Figure 7 This is a three-dimensional structural view of the protective partition 102 in this utility model;

[0033] Figure 8 This is another perspective view of the internal structure of this utility model;

[0034] The reference numerals and names in the figure are as follows:

[0035] 100 Outer casing - 101 Mounting chamber - 102 Protective partition - 103 Upper chamber - 104 Lower chamber - 105 PCB component - 106 Transformer component - 107 Inductor component - 108 Blower component - 109 Heat dissipation mounting slot - 110 Transformer mounting slot - 111 Inductor mounting slot - 112 Transformer protection assembly - 113 Transformer protection chamber - 114 First heat conduction channel - 115 Inductor protection assembly - 115 Inductor protection chamber - 116, second heat conduction channel - 117, heat conduction component - 118, first air duct - 119, second air duct - 120, third air duct - 121, transformer protection housing - 122, inductor protection housing - 128, first heat conduction plate - 133, second heat conduction plate - 134, third heat conduction plate - 135, L-shaped heat conduction plate - 136, U-shaped snap-fit ​​plate - 137, fourth air duct - 138, protective mesh cover - 139. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figure 1-8 A low-radiation, high-safety power adapter includes a housing 100, an installation chamber 101 inside the housing 100, and a protective partition 102 fixedly installed inside the installation chamber 101.

[0038] The protective partition 102 divides the installation chamber 101 into a relatively independent upper chamber 103 and lower chamber 104;

[0039] The lower chamber 104 is equipped with a PCB component 105, and a transformer component 106, an inductor component 107 and a blower component 108 are mounted on the PCB component 105.

[0040] The lower end face of the protective partition 102 is provided with a heat dissipation mounting groove 109 for accommodating the blower 108, a transformer mounting groove 110 for accommodating the transformer 106, and an inductor mounting groove 111 for accommodating the inductor 107.

[0041] A transformer protection component 112 is fixedly provided around the periphery of the transformer mounting groove 110. The transformer protection component 112 and the transformer mounting groove 110 cooperate to form a transformer protection chamber 113. A first heat conduction channel 114 is opened between the inner bottom surface of the transformer mounting groove 110 and the inner bottom surface of the heat dissipation mounting groove 109.

[0042] An inductor protection component 115 is fixed around the periphery of the inductor mounting groove 111. The inductor protection component 115 and the inductor mounting groove 111 cooperate to form an inductor protection chamber 116. A second heat conduction channel 117 is opened between the inner bottom surface of the inductor mounting groove 111 and the inner bottom surface of the heat dissipation mounting groove 109. A heat conduction component 118 is provided in the inductor mounting groove 111 and the heat dissipation mounting groove 109 and is connected in the second heat conduction channel 117.

[0043] The outer casing 100 has a first air duct 119 on each side that communicates with the lower chamber 104, a second air duct 120 on the side wall of the heat dissipation mounting groove 109 that communicates with the upper chamber 103, and a third air duct 121 on the side wall of the outer casing 100 that communicates with the upper chamber 103 and is aligned with the second air duct 120.

[0044] This utility model power adapter achieves low radiation, high safety, and efficient thermal management through a three-dimensional structural design of partitioned shielding, directional heat conduction, and coordinated heat dissipation.

[0045] The transformer protection chamber 113 and the inductor protection chamber 116 form an independent shielded chamber, reducing leakage magnetic radiation;

[0046] The first air duct 119 (lateral air intake) allows air to enter the lower chamber 104. The first heat conduction channel 114 connects the inner bottom surface of the transformer mounting slot 110 with the inner bottom surface of the heat dissipation mounting slot 109. The heat dissipation mounting slot 109 forms a negative pressure under the action of the blower 108, thereby forming an airflow path from the lower chamber 104 to the heat dissipation mounting slot 109 in the transformer protection chamber 113, thereby enabling efficient heat dissipation of the transformer component 106. Then, the blower 108 leads the airflow out of the outer casing 100 from the second and third air ducts 121. At the same time, under the action of the heat conduction component 118, the temperature in the inductor mounting slot 111 and the heat dissipation mounting slot 109 tends to be the same, thereby enabling efficient heat dissipation of the inductor component 107 in the inductor mounting slot 111.

[0047] This power adapter significantly optimizes electromagnetic shielding performance and thermal management efficiency through precise structural design. The independent enclosed structure of the transformer protection chamber 113 and the inductor protection chamber 116 forms an electromagnetic shielding layer around the transformer component 106 and the inductor component 107, effectively suppressing leakage magnetic radiation under high-frequency operating conditions. The protective partition 102 employs a layered isolation strategy, configuring the high-power transformer component 106, the inductor component 107, and the blower cooling system in independent functional slots within the lower chamber 104. The protective partition 102 forms a secondary electromagnetic shielding layer for the electronic components within the lower chamber 104, further reducing leakage magnetic radiation.

[0048] The heat dissipation system achieves directional heat conduction by integrating a slotted layout and multi-level heat conduction channels: When the blower 108 is running, it forms a negative pressure airflow in the heat dissipation mounting slot 109, which, together with the first air duct 119, draws in external cold air from both sides of the outer casing 100. The cold airflow acts directly on the bottom heat dissipation surface of the transformer component 106 through the first heat conduction channel 114. The bottom of the transformer component 106 is generally provided with multiple pins, and there are gaps between the pins, so that the cold airflow can better sweep across a large area of ​​the transformer component 106, resulting in better heat dissipation. At the same time, through the linkage of the second heat conduction channel 117 and the heat conduction component 118, the heat of the inductor component 107 is synchronously introduced into the main heat dissipation path. Finally, the hot airflow is quickly discharged from the second air duct 120 through the aligned third air duct 121, forming a closed-loop high-efficiency heat dissipation cycle.

[0049] This design avoids electromagnetic radiation diffusion caused by hot airflow disturbance by physically isolating high-frequency components from heat dissipation channels. At the same time, the structural reinforcement design between the protective partition 102 and the outer casing 100 improves the shock and impact resistance of the internal components, ensuring long-term stable operation under high load conditions. The overall solution achieves a multi-dimensional balance of electromagnetic compatibility, heat dissipation performance and mechanical reliability in a compact space, and is suitable for electronic equipment application scenarios with strict requirements for safety and low radiation.

[0050] In this embodiment of the present invention, the transformer protection assembly 112 includes a transformer protection housing 122 fixedly surrounding the transformer mounting groove 110. A continuous permalloy layer is attached to the inner wall of the transformer protection housing 122. The permalloy layers on adjacent inner walls are bonded together with conductive adhesive to ensure grounding continuity.

[0051] The surface of the permalloy layer is covered with a continuous copper-aluminum plating layer, and grounding pins are spaced apart on the surface of the copper-aluminum plating layer. The grounding pins are electrically connected to the grounding terminal of the PCB.

[0052] The composite shielding structure, consisting of a permalloy layer and a copper-plated aluminum layer continuously laid on the inner wall of the transformer protective housing 122, significantly enhances the dual suppression capability of high-frequency and low-frequency electromagnetic interference. The permalloy layer, with its high permeability, can directionally absorb the low-frequency magnetic field generated by the transformer, while the copper-plated aluminum layer covering the surface forms a closed electromagnetic shielding ring through conductive continuity, effectively blocking high-frequency electromagnetic wave radiation. Adjacent permalloy layers are bonded together with conductive adhesive to ensure the low impedance characteristics of the shielding layer's grounding path. Combined with the direct connection between the spaced grounding pins and the PCB grounding terminal, the multi-point equipotential grounding effect is further strengthened, avoiding electromagnetic leakage caused by local potential differences. This design, through the synergistic effect of multiple materials and structures, achieves directional dissipation of electromagnetic energy and maximizes shielding effectiveness within a limited space. Simultaneously, the thermal conductivity of the copper-plated aluminum layer assists in channeling transformer heat into the heat dissipation system, addressing both electromagnetic compatibility and thermal management requirements.

[0053] In this embodiment of the present invention, the inductor protection component 115 includes an inductor protection housing 128 fixedly surrounding the inductor mounting groove 111. The inner wall of the inductor protection housing is coated with a ferrite coating, and the outer side of the ferrite coating is covered with a conductive copper paint layer. The edge of the housing is provided with a grounding strip that is electrically connected to the ferrite coating and the conductive copper paint layer, and the grounding strip is electrically connected to the PCB grounding terminal.

[0054] This technical solution achieves efficient suppression and wide-band absorption of electromagnetic radiation from inductor components through a layered composite shielding structure of ferrite coating and conductive copper enamel layer. The ferrite coating sprayed on the inner wall of the inductor protective housing 128 can directionally absorb high-frequency electromagnetic interference and reduce the magnetic field coupling effect during inductor operation. The outer continuous conductive copper enamel layer forms a closed electromagnetic shielding cavity through a conductive network, blocking the outward radiation of mid-to-high frequency electromagnetic waves. The grounding strip at the edge of the housing synchronously connects the ferrite coating and conductive copper enamel layer to the PCB grounding terminal, forming a low-impedance grounding loop and effectively eliminating surface induction of the shielding layer. To prevent the accumulation of charge and avoid the risk of partial discharge or secondary radiation, the magnetic loss characteristics of the ferrite coating and the skin effect of the conductive copper paint layer work synergistically to significantly broaden the electromagnetic energy absorption frequency band. At the same time, the conductive copper paint layer can assist the heat of the inductor 107 to be conducted to the heat dissipation structure along the inductor protective shell 128. This design achieves multi-dimensional optimization of electromagnetic shielding effectiveness, heat diffusion efficiency and structural stability in a compact space through the fine matching of material properties and grounding path. It is especially suitable for high-density integration of inductor components in high-frequency switching power supplies, taking into account both electromagnetic compatibility and system reliability requirements.

[0055] In this embodiment of the utility model, a thin metal sheet layer is laid on the upper surface of the protective partition 102;

[0056] Further enhance electromagnetic shielding effectiveness, while also improving the physical properties of the protective partition 102.

[0057] In this embodiment of the present invention, the heat-conducting component 118 includes a first heat-conducting plate 133 fixed in the heat dissipation mounting groove 109, a second heat-conducting plate 134 fixed in the inductor mounting groove 111, and a third heat-conducting plate 135 disposed in the second heat-conducting channel 117 for connecting the first heat-conducting plate 133 and the second heat-conducting plate 134.

[0058] Efficient thermal coupling between the inductor 107 and the heat dissipation system is achieved through modular layout and layered thermal design. The first heat-conducting plate 133 is tightly attached to the heat dissipation surface of the blower 108 within the heat dissipation mounting slot 109, forming an active heat dissipation core area. The second heat-conducting plate 134 is embedded in the inductor 107, and the third heat-conducting plate 135 extends longitudinally along the second heat conduction channel 117 and bridges the first two, constructing a low thermal resistance heat conduction link. This structure, through the bridging effect of the third heat-conducting plate 135, directionally directs the inductor's heat to the blower 108. In the main heat dissipation area, heat accumulation in the inductor mounting slot 111 is avoided. At the same time, the first heat conduction plate 133 and the airflow path of the blower 108 form a convective synergy, accelerating the transfer of heat energy from the surface of the heat conduction plate to the airflow in the air duct. The layered heat conduction design physically isolates the heat conduction paths of the inductor 107 and the transformer 106, preventing cross-thermal interference between different heat sources. The modular heat conduction plate structure facilitates the adaptation of heat conduction area for different power components, achieving an optimized balance between heat dissipation efficiency and space utilization in a compact space.

[0059] In this embodiment of the utility model, the first heat-conducting plate 133 includes an L-shaped heat-conducting plate 136, one end of the third heat-conducting plate 135 extends into the transformer mounting groove 110 and communicates with the L-shaped heat-conducting plate 136, the inner wall of the heat dissipation mounting groove 109 includes a first inner wall surface communicating with the first heat-conducting channel 114, a second inner wall surface communicating with the second air duct 120, a third inner wall surface communicating with the second heat-conducting channel 117, and a fourth inner wall surface connecting the second inner wall surface and the third inner wall surface, and the L-shaped heat-conducting plate 136 is attached to the third inner wall surface and the fourth inner wall surface of the heat dissipation mounting groove 109;

[0060] This technical solution significantly optimizes the spatial layout and heat conduction efficiency of the heat dissipation path through the structural design of the L-shaped heat conduction plate 136 and the multiple inner wall surfaces. The L-shaped heat conduction plate 136 extends along the third and fourth inner wall surfaces of the heat dissipation mounting groove 109, expanding the contact area and forming a high-strength heat conduction interface. At the same time, its bent structure strengthens the mechanical support of the inner wall of the heat dissipation mounting groove 109. One end of the third heat conduction plate 135 extends into the transformer mounting groove 110 and connects with the L-shaped heat conduction plate 136, directly introducing the transformer heat into the main heat dissipation area. The other end connects with the second heat conduction plate 134 of the inductor mounting groove 111 through the second heat conduction channel 117, constructing a cross-regional collaborative heat dissipation network. The differentiated connection design of the multiple inner wall surfaces enables the heat to be diverted during the conduction and convection stages: the first heat conduction channel 114 directionally discharges the heat of the transformer component 106, and the second heat conduction channel 117 synchronously transfers the heat of the inductor component 107. The aligned layout of the second and third air ducts 121 accelerates the vertical upward discharge of hot air, avoiding cross-interference of heat dissipation paths of different heat sources.

[0061] In this embodiment of the present invention, the second heat-conducting plate 134 includes a U-shaped snap-fit ​​plate 137, and one end of the third heat-conducting plate 135 extends into the inductor mounting groove 111 and communicates with the U-shaped snap-fit ​​plate 137. The U-shaped snap-fit ​​plate 137 is snapped and attached to the outer wall of the inductor 107.

[0062] This technical solution achieves both efficient coupling of the inductor's heat conduction path and improved mechanical stability through the geometric adaptation design of the U-shaped snap-fit ​​plate 137 and the outer wall of the inductor 107. The U-shaped snap-fit ​​plate 137 fits tightly against the outer wall of the inductor 107 with a wrap-around structure, and its double-sided snap-fit ​​surfaces increase the contact area to form a uniform heat conduction interface. This effectively eliminates the gap thermal resistance that is easily generated by traditional planar contact and significantly improves the heat extraction efficiency of the inductor substrate. One end of the third heat-conducting plate 135 extends into the inductor mounting groove 111 and is seamlessly connected to the U-shaped snap-fit ​​plate 137, directly guiding the heat of the inductor 107 into the main heat dissipation channel. The other end is connected to the heat conduction network in the heat dissipation mounting groove 109 through the second heat conduction channel 117, constructing a low thermal resistance link from the inductor surface to the heat dissipation airflow. The elastic snap-fit ​​design of the U-shaped snap-fit ​​plate 137 ensures the fitting accuracy while adapting to the deformation caused by the assembly tolerance of the inductor 107 or thermal expansion and contraction, avoiding contact surface separation or heat conduction failure caused by mechanical stress.

[0063] In this embodiment of the present invention, a fourth air duct 138 is pre-set between the end of the protective partition 102 away from the heat dissipation mounting groove 109 and the inner wall of the mounting chamber 101. The fourth air duct 138 is connected to the upper chamber 103 and the lower chamber 104.

[0064] This technical solution optimizes airflow circulation between the upper and lower chambers 104 by pre-setting a fourth air duct 138, significantly improving overall heat dissipation efficiency and heat distribution uniformity. The fourth air duct 138, as an auxiliary airflow channel, complements the main air duct system of the heat dissipation mounting slot 109. When the blower 108 is running, the fourth air duct 138 guides some cool air vertically from the lower chamber 104 to the upper chamber 103, forming an independent airflow circulation path. This effectively reduces the airflow load on the main air duct, preventing localized overheating. Simultaneously, the fourth air duct 138 enhances the air pressure balance between the upper and lower chambers 104, promoting the rapid discharge of hot air from the second air duct 120 and the third air duct 121, reducing the residence time of hot air within the chamber. This design, through the synergistic effect of multiple air ducts, constructs a three-dimensional heat dissipation network within a limited space, ensuring the thermal stability of high-power components under continuous load, while optimizing the internal temperature field distribution of the equipment and reducing the risk of localized hot spots affecting adjacent components.

[0065] In this embodiment of the utility model, a protective mesh cover 139 is installed on the third air duct 121;

[0066] Enhance the protective capabilities of the third air duct 121 to prevent foreign objects from entering.

[0067] In one embodiment of this utility model, the lower end of the transformer component 106 is provided with multiple pins, and multiple air channels are formed between the pin gaps to facilitate heat dissipation of the transformer component 106.

[0068] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-radiation, high-safety power adapter, characterized in that, Includes an outer shell (100), an installation chamber (101) is provided inside the outer shell (100), and a protective partition (102) is fixedly installed inside the installation chamber (101); The protective partition (102) divides the installation chamber (101) into a relatively independent upper chamber (103) and lower chamber (104). The lower chamber (104) is equipped with a PCB component (105), and a transformer component (106), an inductor component (107), and a blower component (108) are mounted on the PCB component (105). The lower end face of the protective partition (102) is provided with a heat dissipation mounting groove (109) for accommodating the blower (108), a transformer mounting groove (110) for accommodating the transformer (106), and an inductor mounting groove (111) for accommodating the inductor (107). A transformer protection component (112) is fixedly provided around the periphery of the transformer mounting groove (110). The transformer protection component (112) and the transformer mounting groove (110) cooperate to form a transformer protection chamber (113). A first heat conduction channel (114) is opened between the inner bottom surface of the transformer mounting groove (110) and the inner bottom surface of the heat dissipation mounting groove (109). An inductor protection component (115) is fixedly provided around the periphery of the inductor mounting groove (111). The inductor protection component (115) and the inductor mounting groove (111) cooperate to form an inductor protection chamber (116). A second heat conduction channel (117) is opened between the inner bottom surface of the inductor mounting groove (111) and the inner bottom surface of the heat dissipation mounting groove (109). A heat conduction component (118) connected in the second heat conduction channel (117) is provided in the inductor mounting groove (111) and the heat dissipation mounting groove (109). The outer shell (100) has a first air duct (119) on each side that communicates with the lower chamber (104), a second air duct (120) on the side wall of the heat dissipation mounting groove (109) that communicates with the upper chamber (103), and a third air duct (121) on the side wall of the outer shell (100) that communicates with the upper chamber (103) and is aligned with the second air duct (120).

2. The low-radiation, high-safety power adapter according to claim 1, characterized in that, The transformer protection assembly (112) includes a transformer protection housing (122) fixedly surrounding the transformer mounting groove (110). The inner wall of the transformer protection housing (122) is covered with a continuous permalloy layer. The permalloy layers on adjacent inner walls are bonded together with conductive adhesive to ensure grounding continuity. The surface of the permalloy layer is covered with a continuous copper-aluminum plating layer, and grounding pins are spaced apart on the surface of the copper-aluminum plating layer. The grounding pins are electrically connected to the grounding terminal of the PCB.

3. A low-radiation, high-safety power adapter according to claim 2, characterized in that, The inductor protection assembly (115) includes an inductor protection housing (128) fixedly surrounding the inductor mounting groove (111). The inner wall of the inductor protection housing is coated with a ferrite coating, and the outer side of the ferrite coating is covered with a conductive copper paint layer. The edge of the housing is provided with a grounding strip that is electrically connected to the ferrite coating and the conductive copper paint layer. The grounding strip is electrically connected to the PCB grounding terminal.

4. A low-radiation, high-safety power adapter according to any one of claims 1-3, characterized in that, A thin metal sheet is laid on the upper surface of the protective partition (102).

5. A low-radiation, high-safety power adapter according to claim 4, characterized in that, The heat-conducting component (118) includes a first heat-conducting plate (133) fixed in the heat dissipation mounting groove (109), a second heat-conducting plate (134) fixed in the inductor mounting groove (111), and a third heat-conducting plate (135) disposed in the second heat-conducting channel (117) to connect the first heat-conducting plate (133) and the second heat-conducting plate (134).

6. A low-radiation, high-safety power adapter according to claim 5, characterized in that, The first heat-conducting plate (133) includes an L-shaped heat-conducting plate (136). One end of the third heat-conducting plate (135) extends into the transformer mounting groove (110) and communicates with the L-shaped heat-conducting plate (136). The inner wall of the heat dissipation mounting groove (109) includes a first inner wall surface communicating with the first heat-conducting channel (114), a second inner wall surface communicating with the second air duct (120), a third inner wall surface communicating with the second heat-conducting channel (117), and a fourth inner wall surface connecting the second inner wall surface and the third inner wall surface. The L-shaped heat-conducting plate (136) is in contact with the third inner wall surface and the fourth inner wall surface of the heat dissipation mounting groove (109).

7. A low-radiation, high-safety power adapter according to claim 6, characterized in that, The second heat-conducting plate (134) includes a U-shaped snap-fit ​​plate (137), and one end of the third heat-conducting plate (135) extends into the inductor mounting groove (111) and communicates with the U-shaped snap-fit ​​plate (137). The U-shaped snap-fit ​​plate (137) is snapped and attached to the outer wall of the inductor (107).

8. A low-radiation, high-safety power adapter according to claim 7, characterized in that, A fourth air duct (138) is pre-set between the end of the protective partition (102) away from the heat dissipation mounting groove (109) and the inner wall of the mounting chamber (101). The fourth air duct (138) connects the upper chamber (103) and the lower chamber (104).

9. A low-radiation, high-safety power adapter according to claim 8, characterized in that, A protective mesh cover (139) is installed on the third air duct (121).

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