Negative pressure difference vertical air duct and airborne electronic equipment
By designing a vertical air duct with negative pressure difference and using the "chimney effect" and special air duct structure, the problem of low heat dissipation efficiency of high-heat devices in airborne electronic equipment is solved, achieving efficient heat dissipation and space saving effects.
Patent Information
- Application Number
- CN202411665471.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-02-25
AI Technical Summary
In airborne electronic equipment, it is difficult for the prior art to effectively dissipate high-heat devices without increasing product volume, especially in environments with dense internal modules.
A negative pressure difference vertical air duct is designed to form a heat dissipation air duct through the combination of the mechanism frame, the first cold plate, the second cold plate and the fan assembly, and to achieve efficient heat transfer using the "chimney effect" and the special structure of the air duct.
It effectively improves heat dissipation efficiency, reduces the dimensions in the thickness direction of the product, reasonably arranges the high-heat devices and heat dissipation positions of the functional modules, avoids the mutual influence of heat, and simplifies the assembly and maintenance process.
Smart Images
Figure CN119521622A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of airborne electronic equipment, and in particular to a negative pressure difference vertical air duct and airborne electronic equipment. Background Art
[0002] As the requirements for the functions and performance of airborne electronic equipment continue to increase, high-power devices are increasingly used in airborne electronic equipment, and the number of functional modules carried by the products is increasing. The volume power density and surface heat flux density of the entire product are also rising. In particular, the modules stacked inside often consume large power and are isolated from the external environment. In a limited space, how to transfer the heat of the high-heat devices on each functional module to the external housing without causing an excessive increase in the volume of the product has become the focus and difficulty of product structure design. Summary of the invention
[0003] In view of this, the embodiments of the present specification provide a negative pressure difference vertical air duct and airborne electronic equipment to achieve the purpose of improving heat dissipation efficiency.
[0004] The embodiments of this specification provide the following technical solutions: a vertical air duct with negative pressure difference, comprising: a machine frame;
[0005] The first cold plate and the second cold plate are arranged on the mechanism frame at intervals to form a heat dissipation duct. Both the first cold plate and the second cold plate can exchange heat with the core functional modules arranged thereon. The lower part of the heat dissipation duct is the air inlet, and the upper part of the heat dissipation duct is the air outlet. The fan assembly is arranged at the upper end of the mechanism frame and is located above the first cold plate and / or the second cold plate, and the fan assembly is connected to the air outlet of the heat dissipation duct.
[0006] Furthermore, the heat dissipation air duct includes a first air duct, a second air duct and a third air duct connected in sequence, the air inlet is located in the first air duct, and the air outlet is located in the second air duct.
[0007] Furthermore, the cross-sectional area of the first air duct and the cross-sectional area of the third air duct are both greater than the cross-sectional area of the second air duct.
[0008] Furthermore, the flow directions of the first air duct and the second air duct are the same and both are upward in the vertical direction, and the flow direction of the third air duct is perpendicular to the flow direction of the first air duct.
[0009] Further, the core function module is arranged at a position corresponding to the first cold plate and the second air duct, and / or the core function module is arranged at a position corresponding to the second cold plate and the second air duct.
[0010] Furthermore, sealing components are provided between the first cold plate, the second cold plate and the machine frame.
[0011] Furthermore, an electrical connection channel is provided on the first cold plate and / or the second cold plate.
[0012] Furthermore, a dustproof net is provided at the air inlet and / or the air outlet.
[0013] Furthermore, the fan assembly includes a plurality of fans.
[0014] The present invention also provides an airborne electronic device, comprising the above-mentioned negative pressure difference vertical air duct.
[0015] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:
[0016] It can effectively utilize the internal space of the product and reduce the size of the product in the thickness direction;
[0017] The high-heat device locations and heat dissipation locations of each functional module are reasonably arranged to avoid heat interference between modules;
[0018] The assembly relationship of each functional module is simple, which is convenient for assembly and disassembly and has high maintainability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 is an exploded schematic diagram of an embodiment of the present invention;
[0021] Figure 2 is a longitudinal cross-sectional view of an embodiment of the present invention;
[0022] Figure 3 is a left side view of an embodiment of the present invention;
[0023] Figure 4 is a right side view of an embodiment of the present invention;
[0024] Figure 5 is a transverse cross-sectional view of an embodiment of the present invention.
[0025] Reference numerals in the figure: 1. first cold plate; 2. second cold plate; 3. fan assembly; 4. machine frame; 5. dust screen; 6. electrical connection channel. DETAILED DESCRIPTION
[0026] The embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0028] like Figures 1 to 5 As shown, an embodiment of the present invention provides a negative pressure difference vertical air duct, including: a machine frame 4, a first cold plate 1, a second cold plate 2 and a fan assembly 3. The first cold plate 1 and the second cold plate 2 are arranged on the machine frame 4 at intervals to form a heat dissipation air duct, and the first cold plate 1 and the second cold plate 2 can exchange heat with the core functional modules arranged thereon, the lower part of the heat dissipation air duct is an air inlet, and the upper part of the heat dissipation air duct is an air outlet; the fan assembly 3 is arranged at the upper end of the machine frame 4 and is located above the first cold plate 1 and / or the second cold plate 2, and the fan assembly 3 is connected to the air outlet of the heat dissipation air duct.
[0029] The embodiment of the present invention utilizes the "chimney effect" to set the air inlet at the lower side and the air outlet at the upper rear side. The air flows upward along the lift direction from the air inlet, passes through the high-heat area and takes the heat out of the chassis, which can effectively reduce the heat in the high-heat area and improve the heat dissipation efficiency.
[0030] The heat dissipation air duct includes a first air duct, a second air duct and a third air duct connected in sequence, the air inlet is located in the first air duct, and the air outlet is located in the second air duct. The cross-sectional area of the first air duct and the cross-sectional area of the third air duct are both larger than the cross-sectional area of the second air duct.
[0031] Making the cross-sectional areas of the first air duct and the third air duct larger than the cross-sectional area of the second air duct can effectively increase the wind speed at the second air duct and achieve the purpose of efficient heat exchange.
[0032] Specific reference Figure 2 As shown, the flow rate at the outlet area A and the inlet area D is slow, which can reduce the aerodynamic noise and mechanical noise of the outlet and inlet; when the air flows through the narrow area where areas B and C are located, the flow rate increases significantly, the heat exchange is intense, and the heat from the high-temperature area can be quickly taken away.
[0033] Preferably, the flow directions of the first air duct and the second air duct are the same and both are vertically upward, and the flow direction of the third air duct is perpendicular to the flow direction of the first air duct. The first air duct and the second air duct are arranged vertically, and the fan assembly 3 is arranged at the air outlet to form a negative pressure in the air duct, thereby reducing the requirements for the shape of the air duct, thereby increasing the freedom of structural design, and can be designed as a compact type or other types according to needs.
[0034] At the same time, the third air duct is arranged in a horizontal direction, which can prevent dust and dirt from above from invading the air duct and causing blockage of the air duct.
[0035] The core function module is arranged at the position corresponding to the first cold plate 1 and the second air duct, and / or the core function module is arranged at the position corresponding to the second cold plate 2 and the second air duct. The core function module is arranged at the position corresponding to the second air duct to improve the heat exchange efficiency, quickly exchange heat for the core function module, and avoid the problem of performance degradation or power consumption increase due to overheating.
[0036] A sealing component is disposed between the first cold plate 1 and the second cold plate 2 and the machine frame 4. The sealing component in the embodiment of the present invention is a sealing gasket, which can ensure that the air duct is isolated from the inside of the box.
[0037] Furthermore, if Figure 3 and Figure 4 As shown, an electrical connection channel 6 is provided on the first cold plate 1 and / or the second cold plate 2. The electrical connection channel 6 is used to ensure electrical connection between the functional modules at both ends, wherein the electrical connection can be made by an electrical connector or a cable.
[0038] In the embodiment of the present invention, a dustproof net 5 is provided at the air inlet and / or the air outlet. The dustproof net 5 can effectively prevent dust and dirt from entering the air duct, and the dustproof net 5 is set in an easy-to-disassemble mode for easy replacement and cleaning.
[0039] Preferably, the fan assembly 3 includes several fans. The number of fans is determined according to the heat flux density of the product, the characteristic curve of the fan, the results of the product thermal simulation, the high and low temperature test results of the product, etc. The fan can use an axial flow fan, and the wind direction is from left to right, and can also be adjusted to from bottom to top according to actual needs.
[0040] Preferably, if Figure 5 As shown, the heat dissipation fins of the first cold plate 1 and the second cold plate 2 are staggered to form an air duct, which can restrict the airflow direction and improve the heat exchange efficiency of the heat dissipation fin surface.
[0041] The present invention also provides an airborne electronic device, including the above-mentioned negative pressure difference vertical air duct, and a front heat dissipation unit and a standby heat dissipation unit can also be arranged on both sides of the negative pressure difference vertical air duct, wherein the front heat dissipation unit and the standby heat dissipation unit are both natural heat dissipation units, and the negative pressure difference vertical air duct is a forced air cooling heat dissipation unit.
[0042] Correspondingly, the core functional modules may include CPU, GPU or FPGA.
[0043] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with each other, and with each other.
Claims
1. A negative pressure difference vertical air duct, characterized in that: include: Mechanism frame (4); The first cold plate (1) and the second cold plate (2) are arranged on the machine frame (4) at intervals to form a heat dissipation duct. Both the first cold plate (1) and the second cold plate (2) can exchange heat with the core functional modules arranged thereon. The lower part of the heat dissipation duct is an air inlet, and the upper part of the heat dissipation duct is an air outlet. The fan assembly (3) is arranged at the upper end of the machine frame (4) and is located above the first cold plate (1) and / or the second cold plate (2), and the fan assembly (3) is connected to the air outlet of the heat dissipation air duct.
2. The negative pressure difference vertical air duct according to claim 1, characterized in that: The heat dissipation air duct includes a first air duct, a second air duct and a third air duct which are connected in sequence. The air inlet is located in the first air duct, and the air outlet is located in the second air duct.
3. The negative pressure difference vertical air duct according to claim 2, characterized in that: The cross-sectional area of the first air duct and the cross-sectional area of the third air duct are both greater than the cross-sectional area of the second air duct.
4. The negative pressure difference vertical air duct according to claim 2, characterized in that: The flow directions of the first air duct and the second air duct are the same and both are vertically upward, and the flow direction of the third air duct is perpendicular to the flow direction of the first air duct.
5. The negative pressure difference vertical air duct according to claim 2, characterized in that: The core function module is arranged at a position corresponding to the first cold plate (1) and the second air duct, and / or the core function module is arranged at a position corresponding to the second cold plate (2) and the second air duct.
6. The negative pressure difference vertical air duct according to any one of claims 1 to 5, characterized in that: A sealing component is provided between the first cold plate (1) and the second cold plate (2) and the machine frame (4).
7. The negative pressure difference vertical air duct according to any one of claims 1 to 5, characterized in that: An electrical connection channel (6) is provided on the first cold plate (1) and / or the second cold plate (2).
8. The negative pressure difference vertical air duct according to any one of claims 1 to 5, characterized in that: A dustproof net (5) is provided at the air inlet and / or the air outlet.
9. The negative pressure difference vertical air duct according to any one of claims 1 to 5, characterized in that: The fan assembly (3) includes a plurality of fans.
10. An airborne electronic device, comprising a negative pressure differential vertical air duct, characterized in that: The negative pressure difference vertical air duct is the negative pressure difference vertical air duct according to any one of claims 1 to 9.