A new type of efficient and balanced heat dissipation system

Abstract

A novel high-efficiency and balanced heat dissipation system comprises a hood subsystem, a refrigeration subsystem, a heat dissipation fan module, and a balanced heat dissipation air duct subsystem. A dual-channel air inlet duct system with dual fans in parallel is adopted, and cold air is delivered to each detector and light window from different directions through specially designed air duct openings, so that heat can be dissipated efficiently and accurately, and the reliability of the heat dissipation system is improved through redundant design. The fans are separately regulated by PID speed regulation strategy or other high-precision fan speed regulation strategy, and the specially designed air duct is combined to make the air pressure near the primary and secondary mirror modules uniform, which is beneficial to detector imaging and also beneficial to the uniform heat dissipation of different detectors.

Description

Technical Field

[0001] The invention relates to a novel high-efficiency balanced heat dissipation system, belonging to the technical field related to airborne optoelectronic products. Background Art

[0002] As photodetectors become more powerful and integrated, their own heat generation increases, but their own specification temperature remains unchanged. Therefore, the requirements for the cooling system of the head are getting higher and higher.

[0003] The head of the pod is generally integrated with three types of photoelectric detectors: infrared, television and laser, with different numbers of each type of detector. These detectors are sensitive to temperature, especially infrared detectors. Therefore, it is necessary to dissipate heat for each detector, which puts higher requirements on the design of the heat dissipation duct.

[0004] The optical window is a key component of the imaging system. If the temperature is too high, it will have a serious impact on the imaging. Due to the aerodynamic heating during flight, the temperature of the optical window is high, so the optical window needs to be designed for heat dissipation.

[0005] The common pod head heat dissipation mainly adopts the air cooling mode. The high-pressure fan directly blows towards the detector and the primary and secondary mirror modules, which will cause a large pressure difference near the primary and secondary mirror modules, causing uneven force on the primary and secondary mirror modules. Long-term uneven force on the primary and secondary mirror modules will affect the imaging of the detector. Using a single fan for heat dissipation is not conducive to controlling the flow field direction of the detector and the light window, which leads to low heat dissipation efficiency.

[0006] Therefore, it is particularly important to design a new type of efficient and balanced heat dissipation system to cope with the situation where multiple detectors and optical windows have high-precision heat dissipation requirements. Summary of the invention

[0007] The technical problem solved by the present invention is: in view of the problem in the current prior art that the common air cooling mode for heat dissipation of the pod head easily leads to long-term uneven force on the primary and secondary mirror modules and affects the imaging of the photoelectric detector, a new type of efficient and balanced heat dissipation system is proposed.

[0008] The present invention solves the above technical problems by the following technical solutions:

[0009] A new type of high-efficiency balanced heat dissipation system, including a head cover subsystem, a refrigeration subsystem, a heat dissipation fan module, and a balanced heat dissipation air duct subsystem, wherein:

[0010] A photoelectric detector device is arranged inside the head cover subsystem, which continuously generates heat in the working state. The refrigeration subsystem is used to cool the head cover subsystem. A light window is arranged on the head cover subsystem. The heat dissipation fan module provides air flow power for the balanced heat dissipation system composed of the head cover subsystem, the refrigeration subsystem, the heat dissipation fan module, and the balanced heat dissipation air duct subsystem, and adjusts the fan speed according to the temperature feedback inside the head cover subsystem to meet the heat dissipation demand of the photoelectric detector device. The balanced heat dissipation air duct subsystem provides a heat dissipation air flow channel for the refrigeration subsystem and the heat dissipation fan module to assist the head cover subsystem in heat dissipation.

[0011] The head cover subsystem is provided with 5 light windows, including a head light window, a top light window, a bottom light window, a front light window, and a side light window, and cool air is blown out by the refrigeration subsystem to dissipate heat.

[0012] The cooling fan module includes a fan and a fan controller. The fan provides air flow power for the refrigeration subsystem. The fan controller is used to control the fan speed. A temperature feedback device is provided in the head cover subsystem. The fan controller adjusts the fan speed in real time according to the temperature signal in the head cover subsystem sent by the temperature feedback device to meet the cooling requirements.

[0013] The number of the fans and fan controllers are both 2, and the fan is automatically speed-regulated under the control of the fan controller, and the automatic speed regulation strategy adopts PID speed regulation or linear speed regulation.

[0014] The balanced heat dissipation air duct subsystem includes a refrigeration subsystem air outlet duct, a head main frame lateral air duct, a side panel forward air duct, and a hood side panel lateral air duct. The refrigeration subsystem air outlet duct is connected to the refrigeration subsystem and is respectively connected to each fan. The head main frame lateral air duct provides heat dissipation air ducts for the hood subsystem, the head light window, the top light window, the bottom light window, and the photoelectric detector device. The side panel forward air duct provides heat dissipation air ducts for the forward light window and the photoelectric detector device. The hood side panel lateral air duct provides heat dissipation air ducts for the side light windows.

[0015] The opening sizes of the front air duct of the side plate and the lateral air duct of the head cover side plate are different.

[0016] The two fans are respectively installed in different branches of the air outlet duct of the refrigeration subsystem.

[0017] The balanced heat dissipation system also includes primary and secondary mirror modules. When the internal ambient temperature of the hood subsystem or the temperature of the photoelectric detector component or the light window is higher than the corresponding temperature threshold, the refrigeration subsystem starts to work, and the fan draws cold air in the refrigeration subsystem through the refrigeration subsystem outlet duct, the head main frame lateral air duct, the side panel front air duct, and the hood side panel lateral air duct of the balanced heat dissipation air duct subsystem. The cold air passes through the head main frame lateral air duct to ensure that the flow field around the primary and secondary mirror modules is evenly distributed. The cold air is collected after passing through the hood side panel lateral air duct, flows to the lateral light window and photoelectric detector to absorb heat, and flows back to the refrigeration subsystem through the air duct return hole to re-cool and complete the heat dissipation cycle.

[0018] The side air duct of the head main frame is provided with double branches, and the cold air blown out by the fan rotates in the double branches and then blows toward the primary and secondary mirror modules.

[0019] The lateral air duct of the head cover side plate is provided with double branches, the branches are arranged asymmetrically, and both are connected to the air duct return hole.

[0020] The advantages of the present invention compared with the prior art are:

[0021] The present invention provides a novel high-efficiency and balanced heat dissipation system, which adopts a dual-channel air inlet duct system with dual fans in parallel. Cold air is delivered to each detector and light window from different directions through specially designed duct openings, which can dissipate heat efficiently and accurately, and improve the reliability of the heat dissipation system through redundant design. The fans adopt PID speed regulation strategy or other high-precision fan speed regulation strategy to regulate speed respectively, and the specially designed air duct is combined to make the air pressure near the primary and secondary mirror modules uniform, which is beneficial to detector imaging and also beneficial to the uniform heat dissipation of different detectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A general assembly drawing of an embodiment provided for the invention;

[0023] Figure 2 Embodiment light window view provided for the invention;

[0024] Figure 3 A view of the air duct subsystem of the embodiment provided for the invention;

[0025] Figure 4 A left side view of an embodiment provided for the invention;

[0026] Figure 5 A right side view of an embodiment provided for the invention;

[0027] Figure 6 A view of the hood air duct of an embodiment provided for the invention;

[0028] Figure 7 A view of a return air duct of an embodiment provided for the invention; DETAILED DESCRIPTION

[0029] A new type of efficient and balanced heat dissipation system adopts a dual-channel air inlet duct system with dual fans in parallel. The cold air is transported from different directions to each detector and light window through specially designed duct openings, which can dissipate heat efficiently and accurately. The redundant design of the dual fans improves the reliability of the heat dissipation system. Combined with the specially designed duct, the air pressure near the primary and secondary mirror modules is uniform, which is beneficial to the imaging of the detector and the uniform heat dissipation of different detectors. It mainly includes a head cover subsystem, a refrigeration subsystem, a heat dissipation fan module, and a balanced heat dissipation duct subsystem, among which:

[0030] A photoelectric detector device is arranged inside the head cover subsystem, which continuously generates heat in the working state. The refrigeration subsystem is used to cool the head cover subsystem. A light window is arranged on the head cover subsystem. The heat dissipation fan module provides air flow power for the balanced heat dissipation system composed of the head cover subsystem, the refrigeration subsystem, the heat dissipation fan module and the balanced heat dissipation air duct subsystem, and adjusts the fan speed according to the temperature feedback inside the head cover subsystem to meet the heat dissipation demand of the photoelectric detector device. The balanced heat dissipation air duct subsystem provides a heat dissipation air flow channel for the refrigeration subsystem and the heat dissipation fan module to assist the head cover subsystem in heat dissipation.

[0031] Specifically, the hood subsystem is provided with 5 light windows, including a head light window, a top light window, a bottom light window, a front light window, and a side light window, and the refrigeration subsystem blows out cold air for heat dissipation;

[0032] The cooling fan module includes a fan and a fan controller. The fan provides air flow power for the refrigeration subsystem. The fan controller is used to control the fan speed. A temperature feedback device is provided in the head cover subsystem. The fan controller adjusts the fan speed in real time to meet the cooling demand according to the temperature signal in the head cover subsystem sent by the temperature feedback device.

[0033] There are two fans and two fan controllers. The fans are automatically regulated under the control of the fan controller. The automatic speed regulation strategy adopts PID speed regulation or linear speed regulation.

[0034] The balanced heat dissipation air duct subsystem includes a refrigeration subsystem air outlet duct, a head main frame lateral air duct, a side panel forward air duct, and a hood side panel lateral air duct. The refrigeration subsystem air outlet duct is connected to the refrigeration subsystem and is respectively connected to each fan. The head main frame lateral air duct provides heat dissipation air ducts for the hood subsystem, the head light window, the top light window, the bottom light window, and the photoelectric detector device. The side panel forward air duct provides heat dissipation air ducts for the forward light window and the photoelectric detector device. The hood side panel lateral air duct provides heat dissipation air ducts for the side light windows.

[0035] Preferably, the opening sizes of the front air duct of the side panel and the lateral air duct of the head cover side panel are different, and the two fans are respectively installed in different branches of the air outlet duct of the refrigeration subsystem.

[0036] The balanced heat dissipation system also includes primary and secondary mirror modules. When the internal ambient temperature of the hood subsystem or the temperature of the photoelectric detector component or the light window is higher than the corresponding temperature threshold, the refrigeration subsystem starts to work, and the fan draws cold air in the refrigeration subsystem through the refrigeration subsystem outlet duct, the head main frame lateral air duct, the side panel front air duct, and the hood side panel lateral air duct of the balanced heat dissipation air duct subsystem. The cold air passes through the head main frame lateral air duct to ensure that the flow field around the primary and secondary mirror modules is evenly distributed. The cold air is collected after passing through the hood side panel lateral air duct, flows to the lateral light window and photoelectric detector to absorb heat, and flows back to the refrigeration subsystem through the air duct return hole to re-cool and complete the heat dissipation cycle.

[0037] Furthermore, the lateral air duct of the head main frame is provided with double branches, and the cold air blown out by the fan rotates in the double branches and blows toward the primary and secondary mirror modules. The lateral air duct of the hood side panel is provided with double branches, and the branches are asymmetrically arranged and are both connected to the air duct return holes.

[0038] The following is further described in conjunction with specific embodiments:

[0039] In the current embodiment, if Figures 1 to 7 As shown, the new high-efficiency balanced heat dissipation system includes a head cover subsystem 1, a refrigeration subsystem 2, a heat dissipation fan module, and a balanced heat dissipation air duct subsystem. The refrigeration subsystem 2 adopts phase change heat dissipation. The refrigeration subsystem 2 includes an evaporator, a heat exchanger, a refrigerant, a compressor and other related refrigeration devices. Five light windows 3 are installed on the head cover subsystem 1. The light windows 3 include a total of 5 light windows, namely a head light window 3-1, a top light window 3-2, a bottom light window 3-3, a forward light window 3-4, and a side light window 3-5. The balanced heat dissipation air duct subsystem includes a refrigeration subsystem outlet duct 4, a head main frame side duct 5, side panel forward ducts 7 and 8, and a head cover side panel side duct 9;

[0040] The cooling fan module includes two cooling fans and a controller. The two fans are respectively installed in two branch pipes of the air outlet pipe of the refrigeration subsystem.

[0041] When the ambient temperature inside the hood is T 0 Or the temperature T of key components such as detectors and light windows n Higher than a corresponding threshold T 1 The refrigeration subsystem starts working. Two cooling fans extract cold air from the inside of the refrigeration subsystem, and pass through the head main frame side duct 5, side panel front ducts 7 and 8, and hood side panel lateral duct 9 of the balanced heat dissipation duct subsystem. The left and right openings of the head main frame lateral duct 5 are asymmetric. The cold air rotates a certain amount when passing through the ducts on both sides of the main frame. After passing through the ducts, it does not blow directly to the primary and secondary mirror modules 6, so that the flow field around the primary and secondary mirrors is evenly distributed.

[0042] The lateral air ducts on the side panels of the hood are asymmetrical, so that the air from the left and right sides converges in the middle and flows to the light window and detector at the back, and finally flows into the refrigeration subsystem through the air duct return hole, and becomes cold air after heat exchange with the refrigerant in the evaporator, thus completing a cycle. When the heat dissipation of the detector or light window is uneven, the fan speed control strategy is activated to control the speed of the two fans respectively, and then control the air volume flowing out of the air ducts on both sides to achieve accurate and efficient heat dissipation.

[0043] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0044] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A new type of efficient and balanced heat dissipation system, characterized by: It includes a head cover subsystem, a refrigeration subsystem, a cooling fan module, and a balanced cooling air duct subsystem, including: A photoelectric detector device is arranged inside the head cover subsystem, which continuously generates heat in the working state. The refrigeration subsystem is used to cool the head cover subsystem. A light window is arranged on the head cover subsystem. The heat dissipation fan module provides air flow power for the balanced heat dissipation system composed of the head cover subsystem, the refrigeration subsystem, the heat dissipation fan module, and the balanced heat dissipation air duct subsystem, and adjusts the fan speed according to the temperature feedback inside the head cover subsystem to meet the heat dissipation demand of the photoelectric detector device. The balanced heat dissipation air duct subsystem provides a heat dissipation air flow channel for the refrigeration subsystem and the heat dissipation fan module to assist the head cover subsystem in heat dissipation; The head cover subsystem is provided with 5 light windows, including a head light window, a top light window, a bottom light window, a front light window, and a side light window, and cool air is blown out by the refrigeration subsystem to dissipate heat; The heat dissipation fan module includes a fan and a fan controller. The fan provides air flow power for the refrigeration subsystem. The fan controller is used to control the fan speed. A temperature feedback device is provided in the head cover subsystem. The fan controller adjusts the fan speed in real time according to the temperature signal in the head cover subsystem sent by the temperature feedback device to meet the heat dissipation demand. The number of the fans and fan controllers are both 2, and the fan is automatically regulated under the control of the fan controller, and the automatic speed regulation strategy adopts PID speed regulation or linear speed regulation; The balanced heat dissipation air duct subsystem includes a refrigeration subsystem air outlet duct, a head main frame lateral air duct, a side panel forward air duct, and a hood side panel lateral air duct. The refrigeration subsystem air outlet duct is connected to the refrigeration subsystem and is respectively connected to each fan. The head main frame lateral air duct provides heat dissipation air ducts for the hood subsystem, the head light window, the top light window, the bottom light window, and the photoelectric detector device. The side panel forward air duct provides heat dissipation air ducts for the forward light window and the photoelectric detector device. The hood side panel lateral air duct provides heat dissipation air ducts for the side light windows.

2. A novel high-efficiency balanced heat dissipation system according to claim 1, characterized in that: The opening sizes of the front air duct of the side plate and the lateral air duct of the head cover side plate are different.

3. A novel high-efficiency balanced heat dissipation system according to claim 2, characterized in that: The two fans are respectively installed in different branches of the air outlet duct of the refrigeration subsystem.

4. A novel high-efficiency balanced heat dissipation system according to claim 3, characterized in that: The balanced heat dissipation system also includes primary and secondary mirror modules. When the internal ambient temperature of the hood subsystem or the temperature of the photoelectric detector component or the light window is higher than the corresponding temperature threshold, the refrigeration subsystem starts to work, and the fan draws cold air in the refrigeration subsystem through the refrigeration subsystem outlet duct, the head main frame lateral air duct, the side panel front air duct, and the hood side panel lateral air duct of the balanced heat dissipation air duct subsystem. The cold air passes through the head main frame lateral air duct to ensure that the flow field around the primary and secondary mirror modules is evenly distributed. The cold air is collected after passing through the hood side panel lateral air duct, flows to the lateral light window and photoelectric detector to absorb heat, and flows back to the refrigeration subsystem through the air duct return hole to re-cool and complete the heat dissipation cycle.

5. A novel high-efficiency balanced heat dissipation system according to claim 4, characterized in that: The side air duct of the head main frame is provided with double branches, and the cold air blown out by the fan rotates in the double branches and then blows toward the primary and secondary mirror modules.

6. A novel high-efficiency balanced heat dissipation system according to claim 5, characterized in that: The lateral air duct of the head cover side plate is provided with double branches, the branches are arranged asymmetrically, and both are connected to the air duct return hole.

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