A liquid-cooled regenerative thermoelectric refrigeration and dehumidification device

Abstract

A kind of liquid cooling-based regenerative thermoelectric refrigeration dehumidification device, comprising: the condensing cavity formed between two opposite condensing components, the condensing cavity is provided with two-way flow channel, the cold end of refrigeration piece component is attached to the outside of condensing component, and the hot end of refrigeration piece component is attached to cold plate component;Cold plate component is used to dissipate heat for refrigeration piece component;Moist air in external environment is blown into condensing cavity after precooling temperature reduction processing, and is dehumidified by condensing cavity to obtain condensed water and dehumidified air;Condensed water is absorbed and discharged, and the dehumidified air is heated and then discharged into the external environment.This application can significantly improve the efficiency of thermoelectric refrigeration dehumidification, and can be used in microgravity, and has potential application value in the field of air dehumidification.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air humidity regulation, and particularly relates to a regenerative thermoelectric refrigeration dehumidification device based on liquid cooling. BACKGROUND

[0002] In a manned spacecraft, water vapor is generated in the air due to the astronauts' life, increasing the air humidity. When the air humidity in the closed space of the manned spacecraft is too high, bacteria will breed, the human body will be uncomfortable, and the surface of electronic equipment will be dewed or corroded, which seriously affects the service life and normal work of the electronic equipment and endangers the life safety of the astronauts and the safe and stable operation of the spacecraft. Therefore, a special dehumidification device needs to be used to control the air humidity in the closed space within a proper range.

[0003] At present, the air dehumidification technology of the manned spacecraft has been fully developed, and the main air dehumidification method currently adopted is direct condensation dehumidification, that is, the air in the cabin directly enters a condenser dryer to be condensed and dehumidified. This method requires a radiator to provide an outlet temperature lower than the condensation temperature, thereby limiting the heat dissipation capacity of the radiator. In a manned lunar landing mission, the lunar surface infrared will cause the heat dissipation surface of the radiator to be extremely limited, and the weight limit is extremely harsh, so the radiator is difficult to meet the low-temperature requirement of direct condensation dehumidification. Therefore, there is an urgent need for non-direct condensation dehumidification which does not require low-temperature cooling conditions.

[0004] In the non-direct condensation dehumidification method, the dehumidification based on thermoelectric refrigeration has developed rapidly in recent years, which utilizes the thermoelectric refrigeration effect to cool the air to below the dew point to precipitate condensed water. This method has the advantages of compact structure, simplicity and reliability, low noise, strong adaptability, and no harmful medium, and is suitable for use in a manned sealed cabin. However, the thermoelectric refrigeration piece generates heat, which needs to be removed in time by taking effective measures to control the temperature of the hot end of the refrigeration piece. Otherwise, the heat accumulation in the hot end will cause the temperature difference between the cold side and the hot side to increase, the refrigeration efficiency to rapidly decrease, and the energy consumption to increase. Taking the production of 160g / h of moisture as an example, according to the general air-cooled design of the thermoelectric refrigeration dehumidification, the COP is only about 0.6, and at least 600W of electric power consumption is required, which is too large and difficult to use in a manned spacecraft. SUMMARY

[0005] The technical problem solved by the present application is that, in view of the low efficiency of thermoelectric refrigeration dehumidification, the present application provides a regenerative thermoelectric refrigeration dehumidification device based on liquid cooling, which removes the heat generated by the hot end of the refrigeration piece by circulating cooling liquid, and the refrigeration pieces are arranged in a series-parallel manner to effectively reduce the temperature difference between the cold side and the hot side of each refrigeration piece and significantly improve the efficiency of the refrigeration pieces. For a manned spacecraft, the dehumidification device can be connected to the whole-cabin thermal control fluid loop pipeline, and the low-temperature fluid at the outlet of the radiator is used as the cooling liquid of the dehumidification device.

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

[0007] The first aspect,

[0008] A liquid-cooled regenerative thermoelectric refrigeration and dehumidification device comprises a condensing assembly, a refrigeration fin assembly, a cold plate assembly, a first condensate water suction module, a second condensate water suction module, an A-direction condensing air duct structure, and a B-direction condensing air duct structure.

[0009] A condensing cavity is formed between the two oppositely arranged condensing assemblies, and a bidirectional flow channel is arranged in the condensing cavity, which comprises an A-direction flow channel and a B-direction flow channel.

[0010] The outer sides of the two oppositely arranged condensing assemblies are respectively provided with a set of refrigeration fin assemblies and a set of cold plate assemblies.

[0011] The cold end of the refrigeration fin assembly abuts against the outer side of the condensing assembly, and the hot end of the refrigeration fin assembly abuts against the cold plate assembly; the cold plate assembly is used for dissipating heat for the refrigeration fin assembly.

[0012] The output end and the input end of the A-direction flow channel are respectively communicated with the A-direction condensing air duct structure and the first condensate water suction module.

[0013] The output end and the input end of the B-direction flow channel are respectively communicated with the B-direction condensing air duct structure and the second condensate water suction module.

[0014] The A-direction condensing air duct structure and the B-direction condensing air duct structure are respectively used for sucking in the humid air in the external environment, blowing into the condensing cavity after pre-cooling and temperature reduction, and obtaining condensate water and air after dehumidification treatment by the condensing cavity.

[0015] The first condensate water suction module is used for sucking and discharging the condensate water in the A-direction flow channel, and simultaneously transmitting the air after dehumidification treatment in the A-direction flow channel to the B-direction condensing air duct structure; the air after dehumidification treatment is subjected to temperature increasing treatment by the B-direction condensing air duct structure and then discharged into the external environment.

[0016] The second condensate water suction module is used for sucking and discharging the condensate water in the B-direction flow channel, and simultaneously transmitting the air after dehumidification treatment in the B-direction flow channel to the A-direction condensing air duct structure; the air after dehumidification treatment is subjected to temperature increasing treatment by the A-direction condensing air duct structure and then discharged into the external environment.

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

[0018] The condensing plate is arrayed with a plurality of condensing fins.

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

[0020] Preferably, the refrigeration fin assembly comprises: a thermoelectric refrigeration fin and a heat insulation cotton.

[0021] The heat insulation cotton is processed with a plurality of arrayed mounting holes, and each of the mounting holes of the heat insulation cotton is embedded with a thermoelectric refrigeration fin.

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

[0023] The upper plate, the sealing gasket and the lower plate are arranged in a stack from top to bottom.

[0024] The top of the lower plate is provided with arrayed liquid cooling fins, and the bottom of the lower plate is a plane, which presses the thermoelectric refrigeration fin.

[0025] The bottom of the upper plate presses the sealing gasket, and the upper plate and the lower plate are not in contact with the liquid cooling fins of the lower plate, so that a liquid cooling flow channel is formed between the upper plate and the lower plate, and cooling liquid flows in the liquid cooling flow channel.

[0026] The upper plate and the lower plate of the cold plate assembly are fluidically sealed by the sealing gasket.

[0027] The fastening screw is sequentially threaded through the upper plate, the sealing gasket, the lower plate and the heat insulation cotton to fixedly connect the condensation assembly.

[0028] Preferably, the top of the upper plate is processed with a plurality of arrayed weight-reducing grooves, 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 an inlet and an outlet for inflow and outflow of the cooling liquid.

[0030] Preferably, the top of the lower plate is further processed with a baffle structure; the baffle structure is used to divide the liquid cooling flow channel into an S-shaped flow channel structure.

[0031] Preferably, the A-direction condensation air duct structure and the B-direction condensation air duct structure each comprise: a fan, a diffusion air duct, a heat regenerator and a contraction air duct.

[0032] The fan, the diffusion air duct, the heat regenerator and the contraction air duct are sequentially connected, and the contraction air duct is fixedly connected with the condensation assembly.

[0033] The second aspect,

[0034] The liquid cooling flow channel on the cold plate assembly is connected to the whole-cabin thermal control fluid circuit pipeline, and the low-temperature fluid at the outlet of the radiator is used as the cooling liquid in the cold plate assembly.

[0035] Compared with the prior art, the application has the following advantages:

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

[0037] 2) The application transmits the heat generated by the hot side of the thermoelectric cooling piece to the cooling liquid through the liquid cooling fin, and the circulating flow of the cooling liquid carries out the heat, so as to ensure the temperature level of the hot end of the cooling piece and significantly improve the working efficiency and dehumidification efficiency of the thermoelectric cooling piece.

[0038] 3) The cold plate assembly adopted by the application is a split structure of an upper plate and a lower plate, which can realize uniform pressing of the lower plate and the cooling piece, and realize compact structure and excellent heat exchange. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a schematic diagram of the influence of the working current of the thermoelectric cooling piece on the dehumidification amount.

[0040] Figure 2 It is a basic working principle of a liquid-cooled regenerative thermoelectric refrigeration dehumidification device.

[0041] Figure 3 It is a schematic diagram of the air state ①②③④ in the enthalpy humidity diagram in the dehumidification device.

[0042] Figure 4 It is a structure schematic diagram of a liquid-cooled regenerative thermoelectric refrigeration dehumidification device.

[0043] Figure 5 It is an exploded view of a liquid-cooled regenerative thermoelectric refrigeration dehumidification device structure:

[0044] Figure 6 It is a schematic diagram of the array arrangement of the thermoelectric cooling piece in the dehumidification device.

[0045] Figure 7 It is a schematic diagram of the laminated structure of the cold plate assembly and the cooling piece assembly.

[0046] Figure 8 It is a schematic diagram of the flow direction of the cooling liquid in the cold plate assembly in the dehumidification device.

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

[0048] The application discloses a heat-pipe heat recovery type thermoelectric refrigeration and dehumidification device based on liquid cooling, which comprises a condensing assembly 6, a refrigeration fin assembly, a cold plate assembly, a first condensing water suction module 3, a second condensing water suction module 13, an A-direction condensing air duct structure and a B-direction condensing air duct structure.

[0049] A condensing cavity is formed between the two oppositely arranged condensing assemblies 6, and a bidirectional flow channel is arranged in the condensing cavity, wherein the bidirectional flow channel comprises an A-direction flow channel and a B-direction flow channel.

[0050] A group of cold plate assemblies and a group of refrigeration fin assemblies are arranged on the outer sides of the two oppositely arranged condensing assemblies 6 respectively. The cold end of a thermoelectric refrigeration fin 11 in the refrigeration fin assembly is attached to the outer side of the condensing assembly 6, and the hot end of the thermoelectric refrigeration fin 11 is attached to the cold plate assembly. The cold plate assembly is used for heat dissipation of the thermoelectric refrigeration fin 11 in the refrigeration fin assembly.

[0051] The output end and the input end of the A-direction flow channel are communicated with the A-direction condensing air duct structure and the first condensing water suction module 3 respectively.

[0052] The output end and the input end of the B-direction flow channel are communicated with the B-direction condensing air duct structure and the second condensing water suction module 13 respectively.

[0053] The A-direction condensing air duct structure and the B-direction condensing air duct structure are used for sucking in the humid air in the external environment, and the humid air is blown into the condensing cavity after being subjected to precooling and temperature reduction treatment, and then is subjected to dehumidification treatment in the condensing cavity to obtain condensing water and air subjected to dehumidification treatment.

[0054] The first condensing water suction module 3 is used for sucking and discharging the condensing water in the A-direction flow channel, and simultaneously transmitting the air subjected to dehumidification treatment in the A-direction flow channel to the B-direction condensing air duct structure. After the air subjected to dehumidification treatment is subjected to temperature increasing treatment by the B-direction condensing air duct structure, the air is discharged into the external environment.

[0055] The second condensing water suction module 13 is used for sucking and discharging the condensing water in the B-direction flow channel, and simultaneously transmitting the air subjected to dehumidification treatment in the B-direction flow channel to the A-direction condensing air duct structure. After the air subjected to dehumidification treatment is subjected to temperature increasing treatment by the A-direction condensing air duct structure, the air is discharged into the external environment.

[0056] The A-direction condensing air duct structure and the B-direction condensing air duct structure are both double-duct structures. The temperature increasing treatment and the precooling and temperature reduction treatment in the A-direction condensing air duct structure are respectively performed in different air ducts in the double-duct structure. The temperature increasing treatment and the precooling and temperature reduction treatment in the B-direction condensing air duct structure are respectively performed in different air ducts in the double-duct structure.

[0057] The two oppositely arranged condensing assemblies 6 are not in contact, and the condensing assembly 6 comprises a condensing plate and condensing fins. A plurality of condensing fins are arranged on the condensing plate in an array. The condensing fins on the two oppositely arranged condensing assemblies 6 are oppositely arranged, and the condensing fins on the upper and lower condensing assemblies 6 are arranged in a staggered manner.

[0058] The refrigeration sheet assembly comprises thermoelectric refrigeration sheets 11 and heat insulation cotton 12. The heat insulation cotton 12 is processed with a plurality of arrayed mounting holes, and each of the mounting holes of the heat insulation cotton 12 is embedded with a thermoelectric refrigeration sheet 11.

[0059] The cold plate assembly comprises an upper plate 7, a fastening screw 8, a sealing gasket 9 and a lower plate 10. The upper plate 7, the sealing gasket 9 and the lower plate 10 are arranged in a stack from top to bottom; the top of the lower plate 10 is provided with arrayed liquid cooling fins, and the bottom of the lower plate 10 is a plane for pressing the thermoelectric refrigeration sheet 11; the bottom of the upper plate 7 presses the sealing gasket 9 and does not contact with the liquid cooling fins of the lower plate 10, so that a liquid cooling flow channel is formed between the upper plate 7 and the lower plate 10, and cooling liquid flows in the liquid cooling flow channel. The fastening screw 8 is fixedly connected to the condensation assembly 6 after sequentially penetrating through the upper plate 7, the sealing gasket 9, the lower plate 10 and the heat insulation cotton 12.

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

[0061] The lower plate 10 is provided with an inlet and an outlet for the inflow and outflow of the cooling liquid, as shown in Figure 8 .

[0062] The top of the lower plate 10 is also processed with a baffle structure; the baffle structure is used for separating the liquid cooling flow channel into an S-shaped flow channel structure.

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

[0064] The thermoelectric refrigeration sheet 11 is pressed and fixed between the lower plate 10 and the condensation assembly 6, and the sealing gasket 9 is pressed and deformed to play a sealing role.

[0065] The cold quantity generated by the cold end of the thermoelectric refrigeration sheet 11 cools the air through the condensation assembly 6, the water vapor in the air is condensed into liquid water, the low-temperature dry air after dehumidification in the condensation cavity is blown out to the condensate water suction module by the airflow generated by the fan 1, and is re-heated by the regenerator 4 and discharged into the environment.

[0066] A plurality of thermoelectric refrigeration sheets 11 are arrayed, as shown in Figure 6 , arranged in a series-parallel manner, the length of the cold end fin is lengthened to increase the contact area with the air, continuously reduce the air temperature of the cold end, reduce the temperature difference between the cold end and the hot end of each thermoelectric refrigeration sheet 11, and improve the working efficiency of the thermoelectric refrigeration sheet 11.

[0067] The heat generated by the hot end of the thermoelectric refrigeration sheet 11 is transmitted to the liquid working substance in the liquid cooling flow channel through the lower plate 10 in the cold plate assembly, and the heat is taken out by the circulating flow of the cooling liquid in the cold plate assembly, thereby reducing the temperature of the hot end of the thermoelectric refrigeration sheet 11.

[0068] The A-to-condensing-air-channel structure and the B-to-condensing-air-channel structure each comprise a fan 1, a diffuser air channel 2, a regenerator 4 and a converging air channel 5. The fan 1, the diffuser air channel 2, the regenerator 4 and the converging air channel 5 are sequentially connected, and the converging air channel 5 is fixedly connected to a condensing assembly 6. One end of the converging air channel 5 is communicated with the condensing water pumping module and the regenerator 4, and the other end of the converging air channel 5 is communicated with the condensing cavity.

[0069] For a manned spacecraft, the dehumidifying device can be connected to the cabin thermal control fluid loop pipeline through the liquid cooling flow channel on the cold plate assembly, and the low-temperature fluid at the outlet of the radiator is used as the cooling liquid in the cold plate assembly.

[0070] The present application forms a cold end and a hot end through the thermoelectric refrigeration sheet 11, the cold end cools the air entering the condensing cavity through the fins, thereby reducing the water content in the air, and the hot end transmits the heat to the cooling liquid through the cold plate assembly, and the heat generated by the thermoelectric refrigeration sheet 11 is taken away by the cooling liquid circulation, thereby maintaining the temperature level of the hot end. The condensing cavity is composed of double air channels, and the inlet and outlet of the two air channels are connected through the regenerator to realize heat recovery. The present application has the advantages of significantly improving the dehumidifying efficiency of the thermoelectric refrigeration, and can be used in microgravity, and has potential application value in the field of air dehumidification.

[0071] The liquid-cooled regenerative thermoelectric refrigeration dehumidifying device provided in the present application reduces the refrigeration power consumption of a single refrigeration sheet by arranging the refrigeration sheets in an array, and at the same time, the heat generated by the hot end of the refrigeration sheet is transmitted to the cooling circulating liquid in time through the cold plate assembly, and the cooling circulating liquid provides a lower temperature for the hot end of the refrigeration sheet, thereby greatly reducing the temperature difference between the cold and hot sides of the refrigeration sheet, significantly improving the COP of the refrigeration sheet, and further improving the dehumidifying capacity and dehumidifying efficiency. The cooling circulating liquid can be provided by the heat control system cooling working substance in the manned spacecraft.

[0072] In order to better describe the present application, the present application will be described in detail below in conjunction with the schematic diagram and examples.

[0073] Figure 2The basic working principle of the dehumidification is given. The inlet of the fan 1 sucks the ambient air, and the state of the wet air is marked as 1. The wet air is pre-cooled by the regenerator 4, and is cooled to state 2 (compared with state 1, the absolute humidity is unchanged, and the temperature is significantly reduced). Then the wet air enters the condensing assembly 6, is cooled to below the dew point for dehumidification, and the state of the dehumidified air is 3 (compared with state 2, both the absolute humidity and the temperature are reduced). Then the wet air is warmed by the other side of the regenerator 4, and the air cold energy is fully utilized, and the state is changed to 4 (compared with state 3, the absolute humidity is unchanged, and the temperature is increased), and is discharged into the environment. The working states of the air flow channels in the A direction and the B direction are the same. The schematic of the air states 1, 2, 3 and 4 in the psychrometric chart is shown in Figure 3 .

[0074] Figure 4 Figure 5 A specific embodiment of the application is given. The fan 1 sucks the ambient air into the regenerator 4, and the cooled air enters the condensing assembly 6. The air channel between the regenerator and the condensing assembly 6 is provided with a converging air channel 5, which increases the air speed in the condensing assembly 6 and reduces the air flow resistance loss. The cold side of the thermoelectric refrigeration sheet 11 is attached to the bottom surface of the condensing assembly 6, and the temperature of the cold end of the refrigeration sheet is reduced to below the dew point and above the freezing point after being powered on. The wet air is cooled and condensed in the condensing assembly 6. The condensed water is blown out by the air flow and is sucked out by the condensate water suction module on the opposite side. The condensate water suction module in the embodiment of the application includes a water absorption bag, a water guide pipe and a condensate water suction pump, and the material of the water absorption bag can be sponge.

[0075] The thermoelectric refrigeration sheet 11 is arranged in two layers, and the cold ends of the two thermoelectric refrigeration sheets 11 are opposite to each other, so that the condensing space formed can reduce the heat leakage of the system. Since the thermoelectric refrigeration sheet 11 has higher refrigeration efficiency under smaller temperature difference, the refrigeration sheets are arranged in an array in the application, four refrigeration sheets are a group, and are connected in series along the flow direction of the cooling air channel, so as to gradually reduce the temperature of the cold end. The schematic diagram of the series-parallel connection of the refrigeration sheets is shown in Figure 6 . In the embodiment of the application, there are 8 groups of refrigeration sheets, 32 pieces in total, and every 2 groups are connected in parallel. Through the series-parallel connection, the power consumption of each refrigeration sheet is significantly reduced.

[0076] Since the temperature of the cold end for condensation and dehumidification cannot be lower than 0 degree to prevent the condensed water from freezing and blocking the air channel, if the refrigeration sheet power consumption is to be further improved, the temperature of the hot side of the refrigeration sheet can be reduced to reduce the temperature difference between the cold side and the hot side. In the application, the hot side of the refrigeration sheet is closely attached to the surface of the lower plate 10 with fins, and the refrigeration sheet and the surface of the cold plate assembly are smeared with thermal conductive silicone grease to reduce the interfacial thermal resistance. The heat exchange fins are arranged in the cold plate assembly along the arrangement direction of the refrigeration sheets, and the cooling medium flows in the cold plate assembly, and the heat generated by the hot side of the refrigeration sheet is taken away through the fins.

[0077] ​The mounting mode of the refrigeration sheet is that the cold end and the hot end are fastened by the screw 8 to clamp the refrigeration sheet, and in the application, each thermoelectric refrigeration sheet 11 is fastened and mounted by one screw symmetrically on the left and right. The cold plate assembly is reserved with screw hole positions for fastening the refrigeration sheet, and the cold side fin side of the refrigeration sheet is reserved with screw holes. The connection and fixation of the cold plate assembly and the refrigeration sheet assembly and the liquid channel sealing of the cold plate assembly are shown in Figure 7 In the application, the cold plate assembly is composed of the lower plate 10, the upper plate 7, the fastening screw 8 and the sealing gasket 9, the liquid cooling fin and the baffle are processed on the lower plate 10, and the recess is arranged between the upper plate and the lower plate for placing the sealing ring or the sealing gasket. The screw 8 is passed through the upper and lower cover plates and connected and fastened with the screw holes on the cold side fin of the refrigeration sheet to compress the refrigeration sheet. After the screw is fastened, 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 cooling liquid in the cold plate assembly is shown in Figure 8 The cooling liquid is in counterflow heat exchange with the fin in the cold plate assembly, the heat generated by the thermoelectric refrigeration sheet 11 is taken out, and the hot side of the refrigeration sheet is kept at an appropriate temperature. For the manned spacecraft, the cooling liquid can be connected to the thermal control fluid circuit system, and the low-temperature fluid at the outlet of the radiator is connected to the cold plate assembly.

[0079] A principle prototype of the liquid-cooled regenerative thermoelectric refrigeration and dehumidification device is manufactured, and the dehumidification performance test of the prototype is carried out under the conditions of an environmental temperature of 23±2℃, an environmental humidity of 50±5% RH and a standard atmospheric pressure. The test results are shown in the following table, the dehumidification capacity of the prototype is more than 160g / h, the power consumption of the whole machine is about 170W (including the power consumption of the fan and the TEC sheet), and the dehumidification COP (COP = air humidity heat exchange amount / whole machine power consumption) of the whole machine can be more than 2.2.

[0080] Table 1 Test results of dehumidification performance of the prototype

[0081]

[0082]

[0083] When the air volume is unchanged, the refrigeration sheet power supply current is increased, the cold side temperature of the refrigeration sheet is further reduced from 3-8℃ to 0-6℃, and the dehumidification capacity is significantly increased, as shown in Figure 1 When the cold side temperature is reduced to below 1℃, the temperature continues to decrease with the increase of the current, and the contribution to the dehumidification capacity is small.

[0084] Although the present application has been disclosed with reference to the preferred embodiments, it is not intended to limit the present application to the preferred embodiments. Any person skilled in the art, without departing from the spirit and scope of the present application, can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solutions of the present application, shall fall within the protection scope of the technical solutions of the present application. In the case of no 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 application are the known technology of the person skilled in the art.

Claims

1. A liquid-cooled regenerative thermoelectric refrigeration and dehumidification device, characterized in that, include: Condensing assembly (6), cooling chip assembly, cold plate assembly, first condensate suction module (3), second condensate suction module (13), A-direction condensing duct structure and B-direction condensing duct structure; A condensing cavity is formed between two oppositely arranged condensing components (6), and a bidirectional flow channel is provided in the condensing cavity. The bidirectional flow channel includes: an A-direction flow channel and a B-direction flow channel. Two opposing condensing components (6) are respectively provided with a set of refrigeration chip assembly and a set of cold plate assembly on their outer sides; The cold end of the cooling chip assembly is attached to the outside of the condenser assembly (6), and the hot end of the cooling chip assembly is attached to the cold plate assembly; the cold plate assembly is used to dissipate heat from the cooling chip assembly. The output and input ends of the A-direction flow channel are respectively connected to the A-direction condensing air duct structure and the first condensate suction module (3). The output and input ends of the B-direction flow channel are respectively connected to the B-direction condensing air duct structure and the second condensate suction module (13). The A-direction condensing air duct structure and the B-direction condensing air duct structure are used to draw in humid air from the external environment, which is then pre-cooled and blown into the condensing chamber. The condensing chamber then dehumidifies the air to obtain condensate and dehumidified air. The first condensate suction module (3) is used to adsorb and discharge the condensate in the A-direction flow channel, and at the same time, it transmits the dehumidified air in the A-direction flow channel to the B-direction condensate air duct structure. The B-direction condensate air duct structure heats up the dehumidified air and then discharges it into the external environment. The second condensate suction module (13) is used to adsorb and discharge the condensate in the B-direction flow channel, and at the same time, it transmits the dehumidified air in the B-direction flow channel to the A-direction condensate air duct structure. The A-direction condensate air duct structure heats up the dehumidified air and then discharges it into the external environment. The cooling chip assembly includes: a thermoelectric cooling chip (11) and thermal insulation cotton (12); Multiple arrayed mounting holes are machined on the heat insulation cotton (12), and a thermoelectric cooling chip (11) is embedded in each mounting hole on the heat insulation cotton (12). The cold plate assembly includes: an upper plate (7), fastening screws (8), sealing gaskets (9) and a lower plate (10). The upper plate (7), sealing gasket (9) and lower plate (10) are stacked from top to bottom; The top of the lower plate (10) is provided with an array of liquid-cooled fins, and the bottom of the lower plate (10) is a flat surface that presses against the thermoelectric cooling plate (11). The bottom of the upper plate (7) is pressed with a 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 coolant flows in the liquid cooling channel. The upper plate (7) and lower plate (10) of the cold plate assembly are fluid-sealed by a sealing gasket (9); The fastening screw (8) passes through the upper plate (7), sealing gasket (9), lower plate (10) and insulation cotton (12) in sequence and then fixes the condenser assembly (6). The lower plate (10) is provided with an inlet and an outlet for allowing coolant to flow in and out; Both the A-direction condensing air duct structure and the B-direction condensing air duct structure include: a fan (1), a diffusion air duct (2), a regenerator (4), and a contraction air duct (5); The fan (1), diffuser (2), regenerator (4) and contraction duct (5) are connected in sequence, and the contraction duct (5) is fixedly connected to the condenser assembly (6).

2. The liquid-cooled regenerative thermoelectric refrigeration and dehumidification device according to claim 1, characterized in that, The condenser assembly (6) includes: a condenser plate and condenser fins; The condenser plate has multiple condenser fins arranged in an array; The condenser fins on the two oppositely arranged condenser components (6) are arranged facing each other, and the condenser fins on the two oppositely arranged condenser components (6) are staggered.

3. The liquid-cooled regenerative thermoelectric refrigeration and dehumidification device according to claim 2, characterized in that, The top of the upper plate (7) is machined with multiple arrayed weight-reducing grooves, and the bottom of the upper plate (7) is flat; the bottom flat of the upper plate (7) presses against the sealing gasket (9).

4. The liquid-cooled regenerative thermoelectric refrigeration and dehumidification device according to claim 3, characterized in that, The top of the lower plate (10) is also machined with a baffle structure; the baffle structure is used to divide the liquid cooling channel into an S-shaped channel structure.

5. A manned spacecraft, employing a liquid-cooled regenerative thermoelectric refrigeration and dehumidification device as described in any one of claims 1-4, characterized in that, The liquid cooling channel on the cold plate assembly is connected to the whole compartment thermal control fluid loop pipeline, and the low temperature fluid at the radiator outlet is used as the coolant in the cold plate assembly.

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