射流散热器
By forming a multi-level microchannel jet radiator between the heat spreader and the outer shell, the flow guide plate and jet plate are used to accelerate the fluid flow. Combined with heat dissipation support components to increase the heat dissipation area, the problem of insufficient heat dissipation capacity of existing heat spreaders is solved, and more efficient heat removal is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AAC TECHNOLOGIES (NANJING) CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-17
AI Technical Summary
The heat dissipation capacity of existing heat sinks with their toothed structure has reached its limit and is difficult to improve further, resulting in poor heat dissipation for electronic devices.
A jet heat sink was designed, which forms a cavity between the heat spreader and the outer shell, fills it with liquid working fluid, and uses guide plates and jet plates to separate the liquid working fluid into top, middle and bottom microchannels. The jet holes are used to accelerate the fluid flow, and the heat dissipation area is increased by combining heat dissipation support components to achieve multi-stage heat dissipation.
It improves the heat dissipation efficiency of electronic devices, enhances the overall heat dissipation effect of the heat sink, increases the heat dissipation area and fluid flow rate of the heat spreader, and achieves more efficient heat removal.
Smart Images
Figure CN224521400U_ABST
Abstract
Claims
1. A fluidic heat spreader, characterized by, The jet heat sink includes: Heat spreader; The outer shell includes an outer shell body with a receiving space and a liquid inlet and a liquid outlet respectively penetrating opposite sides of the outer shell body; the outer shell body is attached and fixed to the heat spreader plate and together form a cavity, the cavity being filled with a liquid working fluid; A flow guide plate is fixed to the outer shell body, and a plurality of flow guide grooves are provided on the side of the flow guide plate away from the heat spreader. A jetting plate is supported and fixed to the outer shell body and disposed on the side of the guide plate near the heat spreader plate and spaced apart from the guide plate. The jetting plate has multiple jetting holes penetrating it. The guide plate and the jetting plate together divide the cavity into a top-layer microchannel, a middle-layer microchannel, and a bottom-layer microchannel, which are sequentially distributed and connected from the outer shell body to the heat spreader plate. The flow channel is used to guide and disperse the liquid working fluid entering the top-layer microchannel and direct it into the middle-layer microchannel. The jetting holes accelerate the liquid working fluid entering the middle-layer microchannel and then direct it into the bottom-layer microchannel. A heat dissipation support is fixed to the heat spreader and located within the bottom microchannel, used to increase the heat dissipation area between the liquid working fluid in the bottom microchannel and the heat spreader; the liquid inlet is connected to the top microchannel, and the liquid outlet is connected to the bottom microchannel.
2. The fluidic heat spreader of claim 1, wherein, The heat dissipation support includes multiple pins, which are respectively fixed to the heat spreader and arranged at intervals.
3. The fluidic heat spreader of claim 2, wherein, The needle column is a cylindrical, frustum-shaped, or rectangular columnar structure.
4. The fluidic heat spreader of claim 2, wherein, Multiple needles are formed on the heat spreader plate by 3D printing and are integrally formed with the heat spreader plate.
5. The fluidic heat spreader of claim 1, wherein, The heat dissipation support is a grid plate, which is fixed to the heat spreader.
6. The fluidic heat spreader of claim 5, wherein, The grid plates are arranged at varying heights.
7. The jet radiator according to claim 6, characterized in that, The grid plate is formed on the heat spreader plate by 3D printing and is integrally formed with the heat spreader plate.
8. The fluidic heat spreader of claim 1, wherein, The inlet and outlet ends of the jet orifice are either rectangular or circular, and the cross-section of the jet orifice is either trapezoidal or rectangular.
9. The fluidic heat spreader of claim 1, wherein, The jet radiator further includes a first pipe and a second pipe, the first pipe being connected to the liquid inlet and the second pipe being connected to the liquid outlet.