Device and method for quickly and uniformly cooling photoelectric equipment by using refrigerant

Abstract

The invention discloses a device and a method for quickly and uniformly cooling photoelectric equipment by using a refrigerant. The device comprises a refrigeration assembly, the heat insulation assembly is fixedly connected to the refrigeration assembly; the connecting assembly is connected with the heat insulation assembly through a screw and clamps the spherical shell, and any adjacent parts in the connecting assembly are subjected to sealing treatment; and the temperature detection assembly is used for detecting the temperature in the equipment so as to provide a judgment basis for temperature control refrigeration implementation. A dry ice filling mode is adopted, the purpose of rapidly and evenly cooling the interior of the equipment is achieved, the consumption state of dry ice and the refrigeration state of the interior space are judged through the temperature sensor on the wall of the refrigerant barrel and the temperature sensor in the interior space of the refrigerated equipment, and the thermoelectric piece refrigeration device is additionally arranged in an auxiliary mode to serve as supplement of the dry ice refrigeration mode. The method is economical, convenient to operate, short in preparation time, safe and controllable.

Description

Technical Field

[0001] This invention relates to the field of optoelectronic equipment cooling technology, and in particular to a device and method for achieving rapid and uniform cooling of optoelectronic equipment using a refrigerant. Background Technology

[0002] To ensure the rapid and normal operation of aviation optoelectronic equipment systems after takeoff, it is necessary to maintain the optical systems, especially the infrared systems, in a suitable low-temperature environment to reduce the impact of thermal noise from the external environment. Under direct sunlight in summer, the internal temperature of ground equipment can reach 40℃ to 70℃. To meet the requirement of immediate operation after takeoff, relevant pre-cooling work needs to be carried out on the ground. For large-volume, heavy optoelectronic equipment with high thermal inertia (such as optoelectronic equipment weighing over 400kg installed at the nose of the aircraft), achieving a uniform temperature reduction is not an easy task.

[0003] Generally, there are several methods: First, equip the equipment with an air-conditioned vehicle to cool the exterior. This implies larger size, higher cost, and longer cooling time. Second, blow cold nitrogen into the equipment, but this can easily cause internal contamination and the low temperature cannot be maintained for long. Third, design thermoelectric cooling to cool the internal optical loads. However, due to its low power, the cooling effect is not ideal for optical loads with high thermal inertia. Fourth, provide an additional high-powered chiller to cool the refrigerant on the ground, and deliver the refrigerant to the equipment through liquid circulation to achieve cooling. For equipment with airtight requirements, this method makes the airtight design of external operation and internal coordination very complex, and it leaves refrigerant inside the equipment, increasing its weight.

[0004] Based on the above-mentioned technical problems, those skilled in the art urgently need to develop a device and method for rapidly and uniformly cooling photoelectric equipment using a refrigerant that is convenient, economical, easy to operate, does not pollute the internal load, has a good cooling effect, and meets the requirements of rapid and uniform cooling of large thermal inertia photoelectric loads. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for rapidly and uniformly cooling photoelectric equipment using a refrigerant. This device and method is convenient, economical, easy to operate, does not pollute the internal load, and has a good cooling effect, meeting the requirements for rapid and uniform cooling of photoelectric loads with large thermal inertia.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention provides a device for rapid and uniform cooling of optoelectronic equipment using a refrigerant, the device comprising:

[0008] Refrigeration components; and,

[0009] A heat insulation component fixedly connected to the refrigeration component;

[0010] The connecting assembly is connected to the heat insulation assembly by screws and clamps the spherical shell, and any adjacent parts in the connecting assembly are sealed.

[0011] The cooling device also includes:

[0012] Temperature detection components are used to detect the internal temperature of the equipment to provide a basis for determining the implementation of temperature control and cooling.

[0013] Furthermore, the refrigeration assembly includes a refrigerant container for holding dry ice particles; and,

[0014] The cooling fin has a thermoelectric element at one end.

[0015] Furthermore, the heat insulation component includes a heat insulation sheet; and,

[0016] The inner liner of the spherical shell formed within the spherical shell.

[0017] Furthermore, the connecting assembly includes an outer connecting member and an inner connecting member respectively disposed at both ends of the spherical shell, the outer connecting member and the inner connecting member being fixedly connected to each other and clamping the spherical shell;

[0018] One end of the external connector is provided with a dry ice plunger, which can extend into the refrigerant container, and the end of the dry ice plunger away from the external connector is provided with a ball cap.

[0019] Furthermore, the connecting assembly also includes a first rubber ring disposed between the refrigerant container and the insulation sheet; and,

[0020] A second rubber ring is disposed between the inner connector and the thermoelectric element;

[0021] An airtight adhesive strip is provided between the outer connector and the inner connector.

[0022] Furthermore, the temperature detection component includes a temperature sensor, which is fixedly and thermally insulated from the spherical shell and used to measure the ambient air temperature inside the sphere.

[0023] The present invention provides a method for achieving rapid and uniform cooling of optoelectronic devices using a refrigerant, the method comprising the following steps:

[0024] Step 1, Refrigeration implementation: Open the ball cap, take out the dry ice plunger, and use a funnel to pour fine dry ice particles into the opening from the center of the outer connector, so that the dry ice enters the refrigerant container along the inner connector and the heat insulation component. After the refrigerant container is full of dry ice, put the dry ice plunger back in.

[0025] Step 2: Dry ice consumption judgment and internal temperature detection. Judge according to the reading T1 of the temperature sensor on the refrigerant container wall and the spatial temperature T2 of the internal temperature sensor 13 of the refrigerated equipment:

[0026] Define the ambient temperature as T0;

[0027] If T1 << T0, it is considered that there is a certain stock of dry ice and it has the cold source function;

[0028] If T2 << T0, the internal temperature meets the cooling requirement;

[0029] If T1 << T2, there is a certain stock of dry ice and the refrigeration process is in progress at this time;

[0030] If T1 ≈ T2, the dry ice has been exhausted and the refrigeration process ends.

[0031] In the above technical solution, the cooling device and method for realizing rapid and uniform cooling of optoelectronic devices by using refrigerant provided by the present invention have the following beneficial effects:

[0032] The cooling device and method for realizing rapid and uniform cooling of optoelectronic devices by using refrigerant of the present invention can be directly applied to the optoelectronic load inside the large heat inertia aviation optoelectronic device, meet the requirements during the ground preparation stage of the load at the airport, meet the requirements that the device can still perform operations such as rotation and movement during the ground cooling process, meet the safety requirements of the load after taking off, meet the requirements of rapid, uniform and stable cooling of the load under airtight conditions, can realize the refrigeration requirements for large mass and large heat inertia devices in the hot summer environment, do not need to rely on other external guarantee devices, have economy, are easy to operate, have a short preparation time, and are safe and controllable. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0034] Figure 1 It is an overall structure explosion schematic diagram of the cooling device for realizing rapid and uniform cooling of optoelectronic devices by using refrigerant provided by the embodiment of the present invention;​​​​​​​​​1. Refrigerant container; 2. First rubber ring; 3. Cooling fin; 4. Thermoelectric element; 5. Second rubber ring; 6. Inner connector; 7. Airtight rubber strip; 8. Inner liner of the spherical shell; 9. Spherical shell; 10. Outer connector; 11. Dry ice plunger; 12. Spherical cap; 13. Temperature sensor; 14. Insulation component. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] See Figures 1-2 As shown;

[0040] The present invention provides a device for rapid and uniform cooling of optoelectronic equipment using a refrigerant, the device comprising:

[0041] Refrigeration components; and,

[0042] A heat insulation component fixedly connected to the refrigeration component;

[0043] The connecting assembly is connected to the heat insulation assembly by screws and clamps the spherical shell 9, and any adjacent parts in the connecting assembly are sealed.

[0044] The cooling device also includes:

[0045] Temperature detection components are used to detect the internal temperature of the equipment to provide a basis for determining the implementation of temperature control and cooling.

[0046] As a further description of this embodiment, the refrigeration assembly includes a refrigerant container 1 for holding dry ice particles; and,

[0047] Cooling fins 3 and a fan are formed on the surface of the refrigerant container 1, with a thermoelectric element 4 at one end of the cooling fins 3. In this embodiment, the refrigerant can be a solid refrigerant, such as ice or dry ice, and can be replaced with a gaseous or liquid refrigerant depending on actual needs.

[0048] As a further description of this embodiment, the heat insulation component includes a heat insulation sheet 14; and,

[0049] An inner liner 8 is formed within the outer shell 9. The inner liner 8 and the outer shell 9, as components of the equipment, form a sealed part of the entire system. The space enclosed by the inner liner 8 is the internal space of the equipment, and also the space where the components requiring cooling are located. The outer shell 9 and the inner liner 8 are separated by an insulated cylinder, and an insulation layer is applied between them. This prevents the outer shell 9 from cooling down significantly during the cooling process, thus avoiding condensation.

[0050] As a further description of this embodiment, the connecting assembly includes an outer connecting member 10 and an inner connecting member 6 respectively disposed at both ends of the spherical shell 9. The outer connecting member 10 and the inner connecting member 6 are fixedly connected to each other and clamp the spherical shell 9.

[0051] One end of the external connector 10 is provided with a dry ice plunger 11, and the end of the dry ice plunger 11 away from the external connector 10 is provided with a ball cap 12. The dry ice plunger 11 can prevent leakage and provide insulation during the sublimation refrigeration of dry ice. The dry ice plunger 11 can extend into the refrigerant container 1, and under ventilated conditions, it can also prevent dry ice particles from leaking, allowing the equipment to rotate and move freely. The ball cap 12 is an external screw cap that meets the shape requirements of the equipment's outer surface and is removed during dry ice operation.

[0052] As a further description of this embodiment, the connecting assembly also includes a first rubber ring 2 disposed between the refrigerant container 1 and the heat insulation sheet 14; and,

[0053] A second rubber ring 5 is disposed between the inner connector 6 and the thermoelectric element 4;

[0054] The airtight adhesive strip 7 located between the outer connector 10 and the inner connector 6 can facilitate easy assembly and disassembly of the spherical shell 9 while maintaining airtightness.

[0055] As a further description of this embodiment, the temperature detection component includes a temperature sensor 13, which is fixedly and thermally insulated from the spherical shell 9 and is used to measure the ambient air temperature inside the sphere.

[0056] The present invention provides a method for achieving rapid and uniform cooling of optoelectronic devices using a refrigerant, the method comprising the following steps:

[0057] Step 1, Refrigeration Implementation: Open the spherical cover 12, remove the dry ice plunger 11, and pour fine dry ice particles into the opening from the center of the outer connector 10 using a funnel. The dry ice will then flow along the inner connector 6 and the insulation component 14 into the refrigerant container 1. Once the refrigerant container 1 is full of dry ice, replace the dry ice plunger 11. This ensures that the dry ice does not leak out during the refrigeration process and does not affect the movement or rotation of the equipment, while also providing some insulation. When the dry ice evaporates, it absorbs heat from surrounding components such as the refrigerant container 1, resulting in a significant temperature drop. The cooling energy is then transferred to the space outside the refrigerant container 1 (i.e., inside the equipment) through the cooling fins 3 on the outer surface of the refrigerant container 1 and the fan, thus achieving the purpose of cooling the internal components of the optoelectronic equipment under sealed conditions. Through forced convection and radiation, uniform cooling of the internal components can be achieved.

[0058] Step 2, Dry Ice Consumption Judgment and Internal Temperature Detection: Judge according to the reading T1 of the temperature sensor on the wall of the refrigerant container 1 and the spatial temperature T2 of the internal temperature sensor 13 of the refrigerated equipment:

[0059] Define the ambient temperature as T0;

[0060] If T1 << T0, it is considered that there is a certain stock of dry ice and it has the cold source function;

[0061] If T2 << T0, the internal temperature reaches the cooling requirement;

[0062] If T1 << T2, there is a certain stock of dry ice and the refrigeration process is in progress at this time;

[0063] If T1 ≈ T2, the dry ice has been exhausted and the refrigeration process is approaching the end.

[0064] Refrigeration Realization and Thermal Insulation Explanation

[0065] Refer to Figure 2 , the refrigerant container 1 can be manufactured according to the shape of the internal space of the equipment. The refrigerant container 1 is used to hold dry ice, and the cold quantity is transmitted to the inside of the equipment through the barrel wall by the volatilization of dry ice. The material of the refrigerant container 1 can be selected as a metal part with good thermal conductivity, such as aluminum alloy. The conforming refrigerant container can be composed of structural parts welded in different regions. The whole refrigerant container is airtight to avoid the leakage of carbon dioxide. The outer wall of the refrigerant container 1 realizes the control of the refrigeration speed of dry ice and the refrigeration control of local areas inside the equipment by setting cold fins 3 or thermal insulation layers in different regions.

[0066] The heat insulation part 14 is used to weaken the heat conduction of the refrigerant container and the spherical shell to avoid the phenomenon of fogging due to too low temperature of the spherical shell. The heat insulation part can be made of materials with high stiffness and low thermal conductivity, such as carbon fiber, titanium alloy, etc.

[0067] Introduction to the Auxiliary Thermoelectric Chip Refrigeration Device

[0068] Refer to Figure 2 , the cold fin 3 and the thermoelectric chip 4 form a thermoelectric chip refrigeration component, which is a supplement to the dry ice refrigeration system and can enhance the refrigeration control ability and regulation ability of the refrigeration system. Removing or modifying the thermoelectric chip refrigeration system in this part, such as other forms of electric refrigeration and heating forms, still belongs to the scope of the application rights of this patent.

[0069] Only some exemplary embodiments of the present invention are described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for rapidly and uniformly cooling photoelectric equipment using a refrigerant, characterized in that, The cooling device comprises: a refrigeration assembly; and a heat insulation assembly fixedly connected to the refrigeration assembly; a connecting assembly connected to the heat insulation assembly by screws and clamping the spherical shell (9), and any adjacent parts in the connecting assembly are sealed; The cooling device further comprises: a temperature detection assembly for detecting the temperature inside the equipment to provide a basis for determining the cooling implementation.

2. The device according to claim 1, wherein, The refrigeration assembly comprises a refrigerant container (1) for containing dry ice particles; and cooling fins (3) provided with thermoelectric sheets (4) at one end.

3. The device of claim 2, wherein, The heat insulation assembly comprises heat insulation sheets (14); and a spherical shell inner container (8) formed in the spherical shell (9).

4. The device according to claim 3, wherein, The connecting assembly comprises outer connecting parts (10) and inner connecting parts (6) respectively provided at both ends of the spherical shell (9), which are fixedly connected and clamp the spherical shell (9); One end of the outer connecting part (10) is provided with a dry ice plunger (11) which can extend into the refrigerant container (1), and the end of the dry ice plunger (11) away from the outer connecting part (10) is provided with a ball cover (12).

5. The device according to claim 4, wherein the device is characterized by: The connecting assembly further comprises a first rubber ring (2) provided between the refrigerant container (1) and the heat insulation sheet (14); and a second rubber ring (5) provided between the inner connecting part (6) and the thermoelectric sheet (4); an airtight rubber strip (7) provided between the outer connecting part (10) and the inner connecting part (6).

6. The device according to claim 1, wherein the device is characterized by: The temperature detection assembly comprises a temperature sensor (13) fixedly and heat-insulatingly installed with the spherical shell (9) for measuring the air temperature inside the sphere.

7. A method for rapidly and uniformly cooling an optoelectronic device using a coolant, the method comprising: providing a cooling device having a cooling surface; providing a coolant; and applying the coolant to the cooling surface of the cooling device. The cooling method comprises the following steps: Step one, refrigeration implementation: open the ball cover (12), take out the dry ice plunger (11), pour the dry ice fine particles into the hole from the center of the outer connecting part (10) using a funnel, so that the dry ice enters the refrigerant container (1) along the inner connecting part (6) and the heat insulation part (14), and when the refrigerant container (1) is filled with dry ice, the dry ice plunger (11) is filled again; Step two, dry ice consumption judgment and internal temperature detection: according to the temperature sensor reading T1 on the wall of the refrigerant container (1) and the space temperature T2 value of the internal temperature sensor (13) of the refrigerated equipment to determine: Define the ambient temperature as T0; If T1 << T0, it is considered that the dry ice has a certain amount and has a cooling source function; If T2 << T0, the internal temperature reaches the cooling requirement; If T1 << T2, the dry ice has a certain amount, and the refrigeration process is in progress at this time; If T1 ≈ T2, the dry ice has been consumed, and the refrigeration process is over.

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