TEC air cooling module of thermal control system

Abstract

The utility model discloses a TEC air cooling module of a thermal control system, which relates to the field of aerospace thermal control equipment and comprises a TEC, and one side of the hot end of the TEC is sequentially provided with a detachable hot end radiator and a detachable hot end fan from top to bottom; one side of the cold end of the TEC is sequentially provided with a detachable cold end radiator and a cold end fan from bottom to top; the heat-end radiator comprises a heat-end radiator back plate and a cold-end radiator back plate, the heat-end radiator back plate is provided with a TEC, a cold end of the TEC is provided with a cold block, the outer side of the TEC and the outer side of the cold block are provided with a heat insulation layer, the heat insulation layer is located between the heat-end radiator back plate and the cold-end radiator back plate and wraps the TEC and the cold block, and according to the scheme, on the premise that the specification of a cold-end fan and a hot-end fan is not changed, the heat dissipation area of the heat-end radiator can be increased by reducing the interval of fins and increasing the length of the fins; the temperature difference between the cold end and the hot end is reduced, the refrigeration power of the TEC is improved, internal heat is transmitted to the outside, convective heat exchange is enhanced by increasing the area of the radiator, the heat is dissipated to the external space, and normal work of components in the scientific experiment load is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to spaceflight heat control equipment technical field, concretely is a kind of heat control system TEC air cooling module. BACKGROUND

[0002] With the development of spaceflight heat control technology, more and more scientific experiment loads in spaceflight, to maintain scientific experiment load each component in working temperature range, heat control means should be taken.If the temperature of part of scientific experiment load component is too high, it will affect its normal work, reduce reliability, reduce scientific experiment load life.Therefore, the heat control system of scientific experiment load is one of very important subsystems, and the main task is to control the temperature of space station scientific experiment load equipment and structure within the required range.Especially for the scientific experiment load with higher life requirement, the heat control system is particularly important.

[0003] Because of vacuum environment in space, heat transfer path is limited, and the main heat transfer path is heat conduction and heat radiation.With the increasing heat consumption of electronic components and the increasing complexity of scientific experiment load structure, traditional heat conduction and heat radiation cannot meet the requirements of scientific experiment load heat control system.

[0004] The application provides a heat control system TEC air cooling module, which can increase the heat dissipation area of the hot end radiator, reduce the temperature difference between the cold end and the hot end, improve the refrigeration power of the TEC, and transmit the internal heat to the outside by reducing the interval of the fins and increasing the length of the fins under the premise that the specifications of the cold end fan and the hot end fan remain unchanged.The heat dissipation area of the radiator is increased to strengthen convective heat transfer, and the heat is dissipated to the outside space to ensure the normal work of the components inside the scientific experiment load. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies in the prior art, and provides a heat control system TEC air cooling module.

[0006] A heat control system TEC air cooling module, comprising a TEC, a detachable hot end radiator and a hot end fan are installed on the hot end side of the TEC from top to bottom, and the hot end radiator and the hot end fan are detachably connected.

[0007] A detachable cold end radiator and a cold end fan are installed on the cold end side of the TEC from bottom to top, and the cold end radiator and the cold end fan are detachably connected.

[0008] The TEC cold end is provided with a cold block, and the cold block is attached to the bottom surface of the TEC cold end and the cold end radiator on both sides, and the outer side of the TEC and the cold block is provided with a heat insulation layer, which is located between the hot end radiator back plate and the cold end radiator back plate, and wraps the TEC and the cold block.

[0009] Further, the cold block is an aluminum alloy material member.

[0010] Further, the heat insulation layer is divided into two layers, an upper heat insulation layer and a lower heat insulation layer, the upper heat insulation layer wraps the cold block, and the lower heat insulation layer wraps the TEC.

[0011] Further, the heat insulation layer is a heat insulation cotton material member.

[0012] Further, it also includes a container one and a container two with different temperatures, the thermal control system TEC air cooling module is installed between the container one and the container two, the hot end fan faces the container one, and the cold end fan faces the container two.

[0013] Further, the gas temperature inside the container one is constant, and the gas temperature inside the container two is higher than the internal temperature of the container one.

[0014] The hot end radiator and the gas in the container one perform heat convection, and the cold end radiator and the gas in the container two perform heat convection.

[0015] Further, the number of heat dissipation fins of the hot end radiator is set to 35-40, the thickness of the heat dissipation fins of the hot end radiator is set to 0.7mm-1.3mm, and the length of the heat dissipation fins of the hot end radiator is set to 150mm-170mm.

[0016] The utility model has the advantages compared with prior art:

[0017] 1, this scheme can increase the heat dissipation area of the hot end radiator, reduce the cold and hot end temperature difference, improve the refrigeration power of TEC, and transmit the internal heat to the outside by reducing the fin interval and increasing the fin length under the premise of constant cold and hot end fan specifications, compared with prior art, the heat is dissipated to the outside space by increasing the radiator area to strengthen the convection heat transfer, and the internal components of the scientific experiment load are guaranteed to work normally.

[0018] 2, this scheme makes the cold and hot ends of TEC face the container two and the container one respectively, and generates heat convection phenomenon between the heat radiators of the cold and hot ends and the internal gas of the container one and the container two, so that the temperature of the TEC hot end is reduced, and the temperature of the internal gas of the container two and the heating components is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view when the cold and hot ends of the scheme face the container two and the container one respectively.

[0020] Figure 2 It is a whole structure schematic view of the thermal control system TEC air cooling module proposed in the scheme.

[0021] Figure 3An overall structure explosion diagram of a TEC air cooling module of a thermal control system according to the present application;

[0022] Figure 4 A structure diagram of a hot end heat sink according to the present application;

[0023] Figure 5 A structure diagram of a cold end heat sink according to the present application;

[0024] Figure 6 A structure diagram of a TEC and a cold block wrapped by a thermal insulation layer according to the present application;

[0025] Figure 7 A TEC refrigeration capacity-cold and hot end temperature difference curve diagram of a TEC air cooling module according to an embodiment of the present application.

[0026] The reference signs: 1, TEC; 2, hot end heat sink; 3, hot end fan; 4, cold end heat sink; 5, cold end fan; 6, cold block; 7, thermal insulation layer; 8, container one; 9, container two;

[0027] 71, upper thermal insulation layer; 72, lower thermal insulation layer. DETAILED DESCRIPTION

[0028] The present embodiment provides a TEC air cooling module of a thermal control system, which is an independent module, and needs constant temperature air and constant volume flow rate inlet and outlet air at the hot end, therefore, the TEC air cooling module in the present embodiment is arranged between the container one 8 and the container two 9, the hot end of the TEC air cooling module faces the container one 8, and the cold end faces the container two 9, so that the heat in the container two 9 is transmitted to the container one 8 through the TEC air cooling module, the heat is taken away from the outlet through constant air temperature, and the fans at the hot end and the cold end of the TEC air cooling module can autonomously select the direction according to the ambient temperature at the two ends of the TEC air cooling module, the inlet and outlet air directions of the container one 8, and the like.

[0029] The container one 8 is a closed container, and the only openings are the air inlet and the air outlet; the container two 9 is a closed container, and there are devices in the container two 9 that can generate heat to raise the overall temperature in the container two, which is prior art, and therefore will not be described in detail here, when the temperature difference between the container one 8 and the container two 9 is small, the TEC air cooling module has the best heat dissipation, and the TEC air cooling module can be referred to the TEC air cooling module structure diagram provided in the present application. Figure 7 The TEC refrigeration capacity-cold and hot end temperature difference curve diagram provided in the present application.

[0030] The TEC air cooling module structure diagram provided in the present application. Figures 1-6As shown, the TEC air cooling module in the embodiment includes a cold end fan 5, a cold end heat sink 4, a cold block 6, a TEC 1, a thermal insulation layer 7, a hot end heat sink 2 and a hot end fan 3, the cold end heat sink 4 and the hot end heat sink 2 are respectively located at the cold and hot ends of the TEC 1, and the working medium of the TEC air cooling module can be any kind of gas, and air is used in the embodiment;

[0031] The TEC 1 cold end is tightly attached to the aluminum alloy cold block 6, the cold end heat sink 4 is installed above the aluminum alloy cold block 6, and the cold end fan 5 is installed above the cold end heat sink 4;

[0032] The TEC 1 hot end is provided with the hot end heat sink 2, the hot end fan 3 is installed below the hot end heat sink 2, and the hot end of the TEC 1 is installed above the hot end heat sink 2;

[0033] The thermal insulation layer 7 is arranged outside the TEC 1 and the aluminum alloy cold block 6 to wrap them, and the thermal insulation layer 7 is divided into upper and lower blocks, the upper thermal insulation layer 71 has the same size as the bottom surface of the cold end heat sink 4, and the lower thermal insulation layer 72 has an area greater than that of the upper thermal insulation layer 71.

[0034] Please refer to the accompanying drawings of the specification Figure 2 、 3 The assembly process of the hot end structure of the TEC 1 in the embodiment is specifically described as follows: the hot end side of the TEC 1 is tightly attached to the back plate part of the hot end heat sink 2 away from the fins, the hot end fan 3 is fixed to the hot end heat sink 2 by screws, the cold end fan 5 is fixed to the cold end heat sink 4 by screws, the aluminum alloy cold block 6 is wrapped and fixed by the thermal insulation layer 7 of the thermal insulation cotton material around the TEC 1, and finally the cold end heat sink 4 penetrates the thermal insulation layer 7 and is screwed into the base of the hot end heat sink 2 to form a complete TEC air cooling module.

[0035] Please refer to the accompanying drawings of the specification Figure 3 Screws are arranged at the four corner positions of the hot end fan 3, screw holes are arranged at the four corner positions of the hot end heat sink 2 and the lower thermal insulation layer 72 corresponding to the positions of the screws, the screws pass through the hot end fan 3 and the hot end heat sink 2 and are screwed into the screw holes to fix the hot end fan 3 on the hot end heat sink 2, and the assembly of the hot end structure of the TEC 1 is completed.

[0036] Please refer to the accompanying drawings of the specification Figure 2 、 3 The assembly process of the cold end structure of the TEC 1 in the embodiment is specifically described as follows: screws are arranged at the four corner positions of the cold end fan 5, screw holes are arranged at the four corner positions of the cold end heat sink 4 corresponding to the positions of the screws, and the screws pass through the cold end fan 5 and are screwed into the screw holes to fix the cold end fan 5 on the cold end heat sink 4.

[0037] Please refer to the accompanying drawings of the specification Figure 3The cold end heat sink 4 is provided with an aluminum alloy cold block 6 on the bottom surface close to the cold end of the TEC 1, and the aluminum alloy cold block 6 is attached to the cold end of the TEC 1 and is wrapped by the upper heat insulation layer 71.

[0038] The cold end heat sink 4 is provided with fastening screws at four corners, and the upper heat insulation layer 71 and the back plate of the hot end heat sink 2 close to the cold end heat sink 4 are provided with screw holes corresponding to the fastening screws, so that the fastening screws pass through the cold end heat sink and the upper heat insulation layer 71 and then enter the back plate of the cold end heat sink 4, thereby fixing the cold end heat sink 4 and the hot end heat sink 2 on the cold and hot ends of the TEC 1.

[0039] The specific working process of the TEC air cooling module of the thermal control system provided in the embodiment is as follows: the gas in the container 8 is subjected to heat convection with the hot end heat sink 2 under the action of the hot end fan 3, so that the temperature of the hot end of the TEC 1 is lowered, and the gas in the container 9 is subjected to heat convection with the cold end heat sink 4 under the action of the cold end fan 5, so that the temperature of the gas in the container 9 and the components is lowered.

[0040] In addition, the TEC refrigeration capacity-temperature difference curve of the TEC air cooling module provided in the embodiment is as follows, please refer to the attached Figure 7 For example, when the temperature of the gas in the container 8 is Ta=30℃, if the temperature of the environment in the container 9 is 25 degrees, the temperature difference is 5 degrees, and according to the curve, the refrigeration capacity is Qc=21.5W. After the TEC air cooling module is started for a period of time, assuming that the temperature of the gas in the container 8 is 33 degrees and the temperature of the gas in the container 9 is lowered to 23 degrees, the temperature difference is 10 degrees, and the refrigeration capacity is 17.8W. The greater the temperature difference between the two containers, the lower the refrigeration capacity.

[0041] The fins of the hot end heat sink 2 in the container 8 are lengthened and densified, as shown in Figure 4 , which can effectively increase the convective heat transfer area and dissipate more heat. For example, the original manufacturer's quantity is 18, the interval is 3mm, the fin thickness is 1mm, and the fin length is 100mm; in the present application, the quantity is changed to 37, the interval is 1mm, the fin thickness is 1mm, and the fin length is 160mm. Since the heat dissipation efficiency is related to the gas temperature, air flow speed, heat power, TEC refrigeration power, temperature difference between the two ends, and design of the heat sink, according to the steady-state heat conduction formula of the flat wall Q=kA(T1-T2) / d, it can be known that the heat flow is proportional to the area when the area is the only variable. Therefore, the heat dissipation area of the heat sink designed in the present application is more than twice that of the original, so the heat dissipation capacity is greatly improved.

[0042] At the same time, the cold end fan 5 is placed against the hottest part of the container 9, which can achieve the optimal refrigeration effect.

[0043] In the description of the utility model, it needs to understand that, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it can not be understood as the limitation of the utility model. In addition, the features limited by "first", "second" can be explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0044] In the description of the utility model, it needs to be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In the description of the utility model, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A heat control system TEC air cooling module, comprising a TEC (1), characterized in that: a detachable hot end heat sink (2) and a hot end fan (3) are installed on the hot end side of the TEC (1) from top to bottom, and the hot end heat sink (2) and the hot end fan (3) are detachably connected; a detachable cold end heat sink (4) and a cold end fan (5) are installed on the cold end side of the TEC (1) from bottom to top, and the cold end heat sink (4) and the cold end fan (5) are detachably connected; a cold block (6) is arranged on the cold end of the TEC (1), and the cold block (6) is attached to the bottom surface of the cold end of the TEC (1) and the cold end heat sink (4) respectively, and a heat insulation layer (7) is arranged on the outside of the TEC (1) and the cold block (6), and the heat insulation layer (7) is located between the back plate of the hot end heat sink (2) and the back plate of the cold end heat sink (4), and wraps the TEC (1) and the cold block (6).

2. The thermal control system TEC air-cooled module of claim 1, wherein: The cold block (6) is a component made of aluminum alloy material.

3. The TEC air-cooled module of claim 1, wherein: The heat insulation layer (7) is divided into two layers, an upper heat insulation layer (71) and a lower heat insulation layer (72), the upper heat insulation layer (71) wraps the cold block (6), and the lower heat insulation layer (72) wraps the TEC (1).

4. The thermal control system TEC air-cooled module of claim 3, wherein: The heat insulation layer (7) is a component made of heat insulation cotton material.

5. The thermal control system TEC air-cooled module of claim 1, wherein: It also includes a container one (8) and a container two (9) with different temperatures, the heat control system TEC air cooling module is installed between the container one (8) and the container two (9), the hot end fan (3) faces the container one (8), and the cold end fan (5) faces the container two (9).

6. The thermal control system TEC air-cooled module of claim 5, wherein: The gas temperature inside the container one (8) is constant, and the gas temperature inside the container two (9) is higher than the internal temperature of the container one (8); The hot end heat sink (2) and the gas in the container one (8) perform heat convection, and the cold end heat sink (4) and the gas in the container two (9) perform heat convection.

7. The thermal control system TEC air-cooled module of claim 1, wherein: The number of heat dissipation fins of the hot end heat sink (2) is set to 35-40, the thickness of the heat dissipation fins of the hot end heat sink (2) is set to 0.7mm-1.3mm, and the length of the heat dissipation fins of the hot end heat sink (2) is set to 150mm-170mm.

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