Regenerative thermoelectric refrigeration and dehumidification device based on liquid cooling

Abstract

A heat regeneration type thermoelectric refrigeration dehumidification device based on liquid cooling is characterized in that a condensation cavity is formed between two oppositely-arranged condensation assemblies, a bidirectional flow channel is formed in the condensation cavity, the cold end of a refrigeration sheet assembly abuts against the outer sides of the condensation assemblies, and the hot end of the refrigeration sheet assembly abuts against a cold plate assembly; the cold plate assembly is used for cooling the refrigeration sheet assembly; moist air in the external environment is blown into the condensation cavity after being subjected to pre-cooling treatment, and is dehumidified by the condensation cavity to obtain condensed water and dehumidified air; and the condensed water is adsorbed and discharged, and meanwhile, the dehumidified air is discharged into the external environment after being heated. The thermoelectric refrigeration and dehumidification efficiency can be remarkably improved, and the thermoelectric refrigeration and dehumidification device can be suitable for being used under microgravity and has potential application value in the field of air dehumidification.

Description

Technical Field

[0001] The invention belongs to the technical field of air humidity regulation, and in particular to a heat recovery type thermoelectric refrigeration and dehumidification device based on liquid cooling. Background Art

[0002] In manned spacecraft, astronauts will generate water vapor in the air due to their daily life, which increases the air humidity. In the confined space of a manned spacecraft, when the air humidity is too high, it will cause bacteria to grow, human discomfort, and also cause condensation or corrosion on the surface of electronic equipment, seriously affecting the life and normal operation of electronic equipment, endangering the life safety of astronauts and the safe and stable operation of spacecraft. Therefore, it is necessary to use a special dehumidification device to control the air humidity in the confined space within an appropriate range.

[0003] At present, the air dehumidification technology of manned spacecraft has been fully developed. The main air dehumidification method currently used is direct condensation dehumidification, that is, the air in the cabin directly enters the condensation dryer, condenses the air and then dehumidifies it. This method requires the radiator to provide an outlet temperature lower than the condensation temperature, which limits the heat dissipation capacity of the radiator. In the manned lunar mission, the radiator's heat dissipation surface is extremely limited due to the infrared on the lunar surface, and the weight limit is extremely harsh. It is difficult for the radiator to meet the low temperature requirements of direct condensation dehumidification. Therefore, there is an urgent need to use non-direct condensation dehumidification that does not require low-temperature cooling conditions.

[0004] Among the non-direct condensation dehumidification methods, dehumidification based on thermoelectric refrigeration has developed rapidly in recent years. It uses the thermoelectric refrigeration effect to cool the air below the dew point and precipitate condensed water. This method has the advantages of compact structure, simple and reliable, low noise, strong adaptability, and no harmful media. It is suitable for use in manned sealed cabins. However, the thermoelectric refrigeration sheet will generate heat, and effective measures need to be taken to take away the generated heat in time and control the hot end of the refrigeration sheet at a suitable temperature. Otherwise, the heat accumulates at the hot end, which will lead to an increase in the temperature difference between the hot and cold sides, a rapid decrease in refrigeration efficiency, and an increase in energy consumption. Taking the moisture production of 160g / h as an example, according to the current general thermoelectric refrigeration dehumidification air cooling design, the COP is only about 0.6, requiring at least 600W of power consumption, which is too high and difficult to use on manned spacecraft. Summary of the invention

[0005] The technical problem solved by the present invention is: in view of the low efficiency of thermoelectric refrigeration and dehumidification, the present invention proposes a heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling, which uses coolant circulation to take away the heat generated by the hot end of the refrigeration plate, and the refrigeration plate adopts a series-parallel arrangement to effectively reduce the temperature difference between the cold and hot sides of each refrigeration plate, and significantly improve the efficiency of the refrigeration plate. For manned spacecraft, the dehumidification device can be connected to the thermal control fluid circuit pipeline of the entire cabin, and the low-temperature fluid at the outlet of the radiator is used as the coolant of the dehumidification device.

[0006] The technical solution of the present invention is:

[0007] First,

[0008] A heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling, comprising: a condensation assembly, a refrigeration sheet assembly, a cold plate assembly, a first condensation water suction module, a second condensation water suction module, an A-direction condensation air duct structure and a B-direction condensation air duct structure;

[0009] A condensation cavity is formed between the two oppositely arranged condensation components, and a bidirectional flow channel is arranged in the condensation cavity, and the bidirectional flow channel includes: an A-direction flow channel and a B-direction flow channel;

[0010] A group of refrigeration fin assemblies and a group of cold plate assemblies are respectively arranged on the outer sides of the two oppositely arranged condensing assemblies;

[0011] The cold end of the refrigeration fin assembly is attached to the outer side of the condensation assembly, and the hot end of the refrigeration fin assembly is attached to the cold plate assembly; the cold plate assembly is used to dissipate heat for the refrigeration fin assembly;

[0012] The output end and the input end of the A-direction flow channel are respectively connected to the A-direction condensation air duct structure and the first condensation water suction module;

[0013] The output end and the input end of the B-direction flow channel are respectively connected to the B-direction condensation air duct structure and the second condensation water suction module;

[0014] The A-direction condensation air duct structure and the B-direction condensation air duct structure are used to inhale humid air from the external environment, blow it into the condensation cavity after pre-cooling, and the condensation cavity performs dehumidification to obtain condensed water and dehumidified air;

[0015] The first condensed water suction module is used to absorb and discharge the condensed water in the A-direction flow channel, and at the same time transmit the dehumidified air in the A-direction flow channel to the B-direction condensation air duct structure, and the B-direction condensation air duct structure heats the dehumidified air and then discharges it into the external environment;

[0016] The second condensate suction module is used to absorb and discharge the condensate in the B direction flow channel, and at the same time transmit the dehumidified air in the B direction flow channel to the A direction condensation air duct structure, which heats the dehumidified air and discharges it into the external environment.

[0017] Preferably, the condensing assembly comprises: a condensing plate and condensing fins;

[0018] A plurality of condensing fins are arrayed on the condensing plate;

[0019] The condensing fins on the two oppositely arranged condensing assemblies are arranged facing each other, and the condensing fins on the two oppositely arranged condensing assemblies are arranged in a staggered manner.

[0020] Preferably, the cooling plate assembly comprises: a thermoelectric cooling plate and thermal insulation cotton;

[0021] The thermal insulation cotton is processed with a plurality of mounting holes arranged in an array, and a thermoelectric cooling plate is embedded in each mounting hole on the thermal insulation cotton.

[0022] Preferably, the cold plate assembly comprises: an upper plate, fastening screws, a sealing gasket and a lower plate;

[0023] The upper plate, the sealing gasket and the lower plate are stacked from top to bottom;

[0024] The top of the lower plate is provided with liquid cooling fins arranged in an array, and the bottom of the lower plate is a flat surface, which presses the thermoelectric cooling sheet;

[0025] The bottom of the upper plate presses the sealing gasket tightly and does not contact the liquid cooling fins of the lower plate, so that a liquid cooling channel is formed between the upper plate and the lower plate, and coolant flows in the liquid cooling channel;

[0026] The upper plate and the lower plate of the cold plate assembly are fluid-tightly sealed by a sealing gasket;

[0027] The fastening screws pass through the upper plate, sealing gasket, lower plate and thermal insulation cotton in sequence to fix the condensing assembly.

[0028] Preferably, a plurality of weight-reducing grooves arranged in an array are processed on the top of the upper plate, and the bottom of the upper plate is a plane; the bottom plane of the upper plate presses the sealing gasket.

[0029] Preferably, the lower plate is provided with a liquid inlet and a liquid outlet for the coolant to flow in and out.

[0030] Preferably, a baffle strip structure is also processed on the top of the lower plate; the baffle strip structure is used to separate the liquid cooling channel into an S-shaped channel structure.

[0031] Preferably, the A-direction condensation air duct structure and the B-direction condensation air duct structure both include: a fan, a diffusion air duct, a heat regenerator and a contraction air duct;

[0032] The fan, the diffuser duct, the regenerator and the contraction duct are connected in sequence, and the contraction duct is fixedly connected to the condensation component.

[0033] Second,

[0034] A heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling as described in the first aspect is applied on a manned spacecraft, the liquid cooling flow channel on the cold plate assembly is connected to the thermal control fluid loop pipeline of the entire cabin, and the low-temperature fluid at the radiator outlet is used as the coolant in the cold plate assembly.

[0035] The advantages of the present invention compared with the prior art are:

[0036] 1) The present invention adopts thermoelectric cooling plates arranged in series and parallel, prolongs the length of the cold end fins and the contact area with the air, continuously reduces the cold end air temperature, reduces the temperature difference between the cold and hot ends of each thermoelectric cooling plate, and significantly improves the working efficiency and dehumidification efficiency of the thermoelectric cooling plates.

[0037] 2) The present invention transfers the heat generated by the hot side of the thermoelectric cooling element to the coolant through liquid cooling fins. The coolant circulates to carry the heat out, ensuring the temperature level of the hot end of the cooling element, and significantly improving the working efficiency and dehumidification efficiency of the thermoelectric cooling element.

[0038] 3) The cold plate assembly used in the present invention is a split structure of an upper plate and a lower plate, which can achieve uniform compression of the lower plate and the refrigeration plate, and realize a compact structure and excellent heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the effect of the working current of the thermoelectric cooling element on the dehumidification capacity.

[0040] Figure 2 This is the basic working principle of a heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling.

[0041] Figure 3 This is a diagram showing the air states ①②③④ in the dehumidification device in the enthalpy-humidity diagram.

[0042] Figure 4 This is a schematic diagram of the structure of a heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling.

[0043] Figure 5 This is a structural explosion diagram of a heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling:

[0044] Figure 6 Schematic diagram of the array arrangement of thermoelectric cooling chips in a dehumidification device.

[0045] Figure 7 It is a schematic diagram of the stacked structure of the cold plate assembly and the refrigeration fin assembly.

[0046] Figure 8 Schematic diagram of the coolant flow in the cold plate assembly in the dehumidification device.

[0047] In the figure, 1. fan, 2. diffusion air duct, 3. first condensate suction module, 4. heat regenerator, 5. contraction air duct, 6. condensation fin, 7. upper plate, 8. fastening screws, 9. sealing gasket, 10. lower plate, 11. thermoelectric cooling sheet, 12. thermal insulation cotton, 13. second condensate suction module. DETAILED DESCRIPTION

[0048] The present invention discloses a heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling, comprising: a condensation component 6, a refrigeration sheet component, a cold plate component, a first condensation water suction module 3, a second condensation water suction module 13, an A-direction condensation air duct structure and a B-direction condensation air duct structure.

[0049] A condensation cavity is formed between the two oppositely arranged condensation components 6, and a bidirectional flow channel is arranged in the condensation cavity, and the bidirectional flow channel includes: an A-direction flow channel and a B-direction flow channel;

[0050] A group of cold plate components and a group of cooling sheet components are respectively arranged on the outside of the two oppositely arranged condensing components 6. The cold end of the thermoelectric cooling sheet 11 in the cooling sheet component is close to the outside of the condensing component 6, and the hot end of the thermoelectric cooling sheet 11 is close to the cold plate component; the cold plate component is used to dissipate heat for the thermoelectric cooling sheet 11 in the cooling sheet component.

[0051] The output end and the input end of the A-direction flow channel are respectively connected to the A-direction condensation air channel structure and the first condensation water suction module 3;

[0052] The output end and the input end of the B-direction flow channel are respectively connected to the B-direction condensation air channel structure and the second condensation water suction module 13;

[0053] The A-direction condensation air duct structure and the B-direction condensation air duct structure are respectively used to inhale humid air from the external environment, blow it into the condensation cavity after pre-cooling treatment, and the condensation cavity is dehumidified to obtain condensed water and dehumidified air.

[0054] The first condensate suction module 3 is used to absorb and discharge the condensate in the A direction flow channel, and at the same time transmit the dehumidified air in the A direction flow channel to the B direction condensation duct structure, which heats the dehumidified air and discharges it into the external environment.

[0055] The second condensate suction module 13 is used to absorb and discharge the condensate in the B direction flow channel, and at the same time transmit the dehumidified air in the B direction flow channel to the A direction condensation air duct structure, which heats the dehumidified air and discharges it into the external environment.

[0056] The A-direction condensation air duct structure and the B-direction condensation air duct structure are both double-duct structures. The heating process and pre-cooling and cooling process in the A-direction condensation air duct structure are respectively carried out in different air ducts in the double-duct structure. The heating process and pre-cooling and cooling process in the B-direction condensation air duct structure are respectively carried out in different air ducts in the double-duct structure.

[0057] The two oppositely arranged condensing components 6 are not in contact with each other, and the condensing components 6 include: a condensing plate and a condensing fin. A plurality of condensing fins are arrayed on the condensing plate; the condensing fins on the two oppositely arranged condensing components 6 are arranged facing each other, and the condensing fins on the upper and lower condensing components 6 are arranged in a staggered manner.

[0058] The cooling plate assembly includes: a thermoelectric cooling plate 11 and a heat insulation cotton 12. The heat insulation cotton 12 is processed with a plurality of mounting holes arranged in an array, and a thermoelectric cooling plate 11 is embedded in each mounting hole of the heat insulation cotton 12.

[0059] The cold plate assembly includes: an upper plate 7, fastening screws 8, a sealing gasket 9 and a lower plate 10. The upper plate 7, the sealing gasket 9 and the lower plate 10 are stacked from top to bottom; the top of the lower plate 10 is provided with liquid-cooled fins arranged in an array, and the bottom of the lower plate 10 is a plane, which presses the thermoelectric cooling sheet 11; the bottom of the upper plate 7 presses the sealing gasket 9, and does not contact the liquid-cooled fins of the lower plate 10, so that a liquid-cooled flow channel is formed between the upper plate 7 and the lower plate 10, and coolant flows in the liquid-cooled flow channel. The fastening screws 8 pass through the upper plate 7, the sealing gasket 9, the lower plate 10 and the insulation cotton 12 in sequence and then fix the condensing assembly 6.

[0060] The top of the upper plate 7 is processed with a plurality of weight-reducing grooves arranged in an array, and the bottom of the upper plate 7 is a plane; the bottom plane of the upper plate 7 presses the sealing gasket 9 tightly.

[0061] The lower plate 10 is provided with a liquid inlet and a liquid outlet for the coolant to flow in and out. Figure 8 shown.

[0062] A baffle strip structure is also processed on the top of the lower plate 10; the baffle strip structure is used to separate the liquid cooling channel into an S-shaped channel structure.

[0063] The upper plate 7 and the lower plate 10 of the cold plate assembly are fluid-tightly sealed by a sealing gasket 9 .

[0064] The thermoelectric cooling sheet 11 is pressed and fixed between the lower plate 10 and the condensing assembly 6, and the sealing gasket 9 is pressed and deformed at the same time, so as to achieve a sealing effect.

[0065] The cold energy generated by the cold end of the thermoelectric cooling sheet 11 cools the air through the condensation component 6, and the water vapor in the air is condensed into liquid water. The low-temperature dry air after dehumidification in the condensation chamber is blown out to the condensation water suction module for storage through the airflow generated by the fan 1, and then heated up by the regenerator 4 and discharged into the environment.

[0066] A plurality of thermoelectric cooling sheets 11 are arranged in an array, such as Figure 6 As shown, a series-parallel arrangement is adopted to increase the contact area with the air by extending the length of the cold end fins, continuously reduce the cold end air temperature, reduce the temperature difference between the cold and hot ends of each thermoelectric cooling plate 11, and improve the working efficiency of the thermoelectric cooling plate 11.

[0067] The heat generated by the hot end of the thermoelectric cooling sheet 11 is transferred to the liquid working medium in the liquid cooling channel through the lower plate 10 in the cold plate assembly. The coolant in the cold plate assembly circulates through the liquid cooling channel to remove the heat, thereby reducing the hot end temperature of the thermoelectric cooling sheet 11.

[0068] The A-direction condensation air duct structure and the B-direction condensation air duct structure both include: a fan 1, a diffuser air duct 2, a regenerator 4, and a contraction air duct 5. The fan 1, the diffuser air duct 2, the regenerator 4, and the contraction air duct 5 are connected in sequence, and the contraction air duct 5 is fixedly connected to the condensation assembly 6. One end of the contraction air duct 5 is connected to the condensation water suction module and the regenerator 4, and the other end of the contraction air duct 5 is connected to the condensation cavity.

[0069] For manned spacecraft, the dehumidification device of the present invention can be connected to the thermal control fluid circuit pipeline of the entire cabin through the liquid cooling channel on the cold plate assembly, and the low-temperature fluid at the radiator outlet is used as the coolant in the cold plate assembly.

[0070] The present invention forms a cold end and a hot end through a thermoelectric cooling sheet 11. The cold end cools the air entering the condensation cavity through fins, thereby reducing the water content in the air. The hot end transfers heat to the coolant through a cold plate assembly. The heat generated by the thermoelectric cooling sheet 11 is taken away by the circulation of the coolant to maintain the temperature level of the hot end. The condensation cavity is composed of a double air duct, and heat is recovered by a heat regenerator at the inlet and outlet of the two air ducts. The present invention has the advantage of significantly improving the dehumidification efficiency of thermoelectric refrigeration, and can be used in microgravity, and has potential application value in the field of air dehumidification.

[0071] The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling provided in the present invention reduces the refrigeration power consumption of a single refrigeration plate by arranging the refrigeration plates in an array; at the same time, the heat generated by the hot end of the refrigeration plate is promptly transferred to the cooling circulating fluid through the cold plate assembly, and the cooling circulating fluid provides a lower temperature at the hot end of the refrigeration plate, thereby greatly reducing the temperature difference between the cold and hot sides of the refrigeration plate, significantly improving the working COP of the refrigeration plate, and further improving the dehumidification capacity and dehumidification efficiency. The cooling circulating fluid can be the cooling medium of the thermal control system in the manned spacecraft.

[0072] In order to better describe the present invention, the present invention is described in detail below with reference to schematic diagrams and examples.

[0073] Figure 2The basic working principle of the dehumidification of the present invention is given. The inlet of the fan 1 inhales ambient air. The state of the wet air is marked as ①. It is pre-cooled by the regenerator 4 and cooled to state ② (compared with state ①, the absolute moisture content remains unchanged, and the temperature is significantly reduced). The wet air then enters the condensation component 6 and is cooled to below the dew point for dehumidification. After dehumidification, the state of the wet air is ③ (compared with state ②, both the absolute moisture content and the temperature are reduced). The wet air then heats up through the regenerator 4 on the other side, and the air cooling capacity is fully utilized, turning to state ④ (compared with state ③, the absolute moisture content remains unchanged, and the temperature is increased), and discharged into the environment. The working states of the A-direction flow channel and the B-direction flow channel are the same. The air states ①②③④ are schematically shown in the enthalpy-humidity diagram as follows Figure 3 shown.

[0074] Figure 4 and Figure 5 A specific embodiment of the present invention is given. The fan 1 inhales ambient air into the regenerator 4, and enters the condensation component 6 after cooling. A contraction duct 5 is provided in the air duct between the regenerator and the condensation component 6 to increase the wind speed in the condensation component 6 and reduce the airflow resistance loss. The cold side of the thermoelectric cooling plate 11 is attached to the bottom surface of the condensation component 6. After the cooling plate is powered on, the temperature of the cold end drops below the dew point and above the freezing point, and the humid air is cooled and condensed in the condensation component 6. After the condensed water condenses on the surface of the condensation component 6, it is blown out by the airflow and adsorbed and discharged by the condensation water suction module on the opposite side. The condensation water adsorption module in one embodiment of the present invention includes a water absorption bag, a water diversion pipe, a condensation water suction pump, etc., and the water absorption bag material can be sponge.

[0075] The thermoelectric cooling sheets 11 are arranged in two layers, with the cold ends of the two thermoelectric cooling sheets 11 facing each other. The condensation space formed in this way can reduce the heat leakage of the system. Since the thermoelectric cooling sheets 11 have higher cooling efficiency under a smaller temperature difference, the present invention arranges the cooling sheets in an array, with 4 cooling sheets as a group, and connects them in series along the flow direction of the cooling air duct, thereby gradually reducing the temperature of the cold end. The schematic diagram of the series-parallel arrangement of the cooling sheets is shown in FIG. Figure 6 As shown, in the embodiment of the present invention, there are 8 groups of 32 cooling plates, and each 2 groups are controlled in parallel. Through the series-parallel arrangement, the power consumption of each cooling plate is significantly reduced.

[0076] Since the minimum temperature of the cold end condensation dehumidification cannot be lower than 0 degrees, so as to prevent the condensed water from freezing and blocking the air duct, if the power consumption of the refrigeration plate is to be further improved, the temperature of the hot side of the refrigeration plate can be reduced to reduce the temperature difference between the hot and cold sides. In the present invention, the hot side of the refrigeration plate is tightly fitted with the surface of the lower plate 10 with fins, and thermal conductive silicone grease is applied between the refrigeration plate and the surface of the cold plate assembly to reduce the interface thermal resistance. Heat exchange fins are arranged in the cold plate assembly along the arrangement direction of the refrigeration plate. The cooling medium flows in the cold plate assembly and the heat generated by the hot side of the refrigeration plate is taken away through the fins.

[0077] The cooling plate is installed by fastening the cold end and the hot end with screws 8 to clamp the cooling plate. In the present invention, each thermoelectric cooling plate 11 is symmetrically fastened with one screw on each side. The cold plate assembly has reserved screw holes for fastening the cooling plate, and the cold side fin of the cooling plate has threaded holes. The connection and fixation between the cold plate assembly and the cooling plate assembly and the sealing of the cold plate assembly liquid circuit are shown in the figure below. Figure 7 As shown. In the present invention, the cold plate assembly is composed of a lower plate 10, an upper plate 7, a fastening screw 8 and a sealing gasket 9. The lower plate 10 is processed with liquid cooling fins and baffle strips, and a groove is provided between the upper and lower plates for placing a sealing ring or a sealing gasket. The screws 8 pass through the upper and lower cover plates, and are connected and fastened with the threaded holes on the cold side fins of the refrigeration fins to compress the refrigeration fins. After the screws are tightened, the sealing ring or the sealing gasket is compressed at the same time, and the upper plate 7 and the lower plate 10 of the cold plate assembly form a closed liquid cavity.

[0078] The flow direction of the coolant in the cold plate assembly is shown in the figure below: Figure 8 As shown, the coolant exchanges heat with the fins in the cold plate assembly by convection, taking out the heat generated by the thermoelectric cooling sheet 11, so that the hot side of the cooling sheet maintains a suitable temperature. For manned spacecraft, the coolant can be connected to the thermal control fluid loop system, and the low-temperature fluid at the outlet of the radiator is connected to the cold plate assembly.

[0079] A prototype of the heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling described in the present invention was manufactured, and the dehumidification performance of the prototype was tested under the conditions of ambient temperature 23±2℃, ambient humidity 50±5%RH, and standard atmospheric pressure. The test results are shown in the following table. The dehumidification capacity of the prototype reaches more than 160g / h, the power consumption of the whole machine is about 170W (including the power consumption of the fan and TEC sheet), and the dehumidification COP (COP=air humid heat exchange / whole machine power consumption) of the whole machine can reach more than 2.2.

[0080] Table 1 Dehumidification performance test results of the prototype

[0081]

[0082]

[0083] When the air volume remains unchanged, the power supply current of the cooling plate is increased, and the temperature of the cold side of the cooling plate is further reduced from 3-8°C to 0-6°C, and the dehumidification capacity is significantly increased. Figure 1 When the temperature on the cold side drops below 1°C, continuing to increase the current and lowering the temperature will have little contribution to the dehumidification capacity.

[0084] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall belong to the protection scope of the technical solution of the present invention. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0085] 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 heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling, characterized in that: It comprises: a condensation assembly (6), a refrigeration plate assembly, a cold plate assembly, a first condensation water suction module (3), a second condensation water suction module (13), an A-direction condensation air duct structure and a B-direction condensation air duct structure; A condensation cavity is formed between two oppositely arranged condensation components (6), and a bidirectional flow channel is arranged in the condensation cavity, and the bidirectional flow channel includes: an A-direction flow channel and a B-direction flow channel; A group of refrigeration fin assemblies and a group of cold plate assemblies are respectively arranged on the outer sides of the two oppositely arranged condensing assemblies (6); The cold end of the refrigeration fin assembly is attached to the outer side of the condensation assembly (6), and the hot end of the refrigeration fin assembly is attached to the cold plate assembly; the cold plate assembly is used to dissipate heat for the refrigeration fin assembly; The output end and the input end of the A-direction flow channel are respectively connected to the A-direction condensation air channel structure and the first condensation water suction module (3); The output end and the input end of the B-direction flow channel are respectively connected to the B-direction condensation air channel structure and the second condensation water suction module (13); The A-direction condensation air duct structure and the B-direction condensation air duct structure are used to inhale humid air from the external environment, blow it into the condensation cavity after pre-cooling, and the condensation cavity performs dehumidification to obtain condensed water and dehumidified air; The first condensed water suction module (3) is used to absorb and discharge the condensed water in the A-direction flow channel, and at the same time transmit the air in the A-direction flow channel that has been dehumidified to the B-direction condensation air duct structure, and the B-direction condensation air duct structure heats the dehumidified air and then discharges it into the external environment; The second condensate suction module (13) is used to absorb and discharge the condensate in the B-direction flow channel, and at the same time transmit the dehumidified air in the B-direction flow channel to the A-direction condensation air duct structure, and the A-direction condensation air duct structure heats the dehumidified air and then discharges it into the external environment.

2. A heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 1, characterized in that: The condensation assembly (6) comprises: a condensation plate and condensation fins; A plurality of condensing fins are arrayed on the condensing plate; The condensing fins on the two oppositely disposed condensing components (6) are disposed facing each other, and the condensing fins on the two oppositely disposed condensing components (6) are arranged in a staggered manner.

3. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 2, characterized in that: The cooling plate assembly comprises: a thermoelectric cooling plate (11) and a heat insulation cotton (12); The thermal insulation cotton (12) is processed with a plurality of mounting holes arranged in an array, and a thermoelectric cooling plate (11) is embedded in each mounting hole on the thermal insulation cotton (12).

4. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 3, characterized in that: The cold plate assembly comprises: an upper plate (7), fastening screws (8), a sealing gasket (9) and a lower plate (10); The upper plate (7), the sealing gasket (9) and the lower plate (10) are stacked from top to bottom; The top of the lower plate (10) is provided with liquid cooling fins arranged in an array, and the bottom of the lower plate (10) is a plane that presses the thermoelectric cooling sheet (11); The bottom of the upper plate (7) is pressed against the sealing gasket (9) and does not contact the liquid cooling fins of the lower plate (10), so that a liquid cooling channel is formed between the upper plate (7) and the lower plate (10), and a coolant flows in the liquid cooling channel; The upper plate (7) and the lower plate (10) of the cold plate assembly are fluid-tightly sealed by a sealing gasket (9); The fastening screws (8) are passed through the upper plate (7), the sealing gasket (9), the lower plate (10) and the heat insulation cotton (12) in sequence to fix the condensation assembly (6).

5. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 4, characterized in that: The top of the upper plate (7) is processed with a plurality of weight-reducing grooves arranged in an array, and the bottom of the upper plate (7) is a plane; the bottom plane of the upper plate (7) presses the sealing gasket (9).

6. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 5, characterized in that: The lower plate (10) is provided with a liquid inlet and a liquid outlet for allowing the coolant to flow in and out.

7. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to claim 6, characterized in that: The top of the lower plate (10) is also processed with a baffle strip structure; the baffle strip structure is used to separate the liquid cooling flow channel into an S-shaped flow channel structure.

8. A heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling according to any one of claims 4 to 7, characterized in that: The A-direction condensation air duct structure and the B-direction condensation air duct structure both comprise: a fan (1), a diffusion air duct (2), a heat regenerator (4) and a contraction air duct (5); The fan (1), the diffusion air duct (2), the heat regenerator (4) and the contraction air duct (5) are connected in sequence, and the contraction air duct (5) is fixedly connected to the condensation component (6).

9. The heat recovery thermoelectric refrigeration and dehumidification device based on liquid cooling as claimed in claim 8 is applied on a manned spacecraft, characterized in that: The liquid cooling channel on the cold plate assembly is connected to the thermal control fluid loop pipeline of the entire cabin, and the low-temperature fluid at the radiator outlet is used as the coolant in the cold plate assembly.

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