Automatic condensate water collecting device and condensate water collecting method

Abstract

The invention discloses an automatic condensate water collecting device which comprises a main cylinder vertically mounted on the ground surface, and the bottom edge of the main cylinder is bent upwards from the interior of the cylinder to form an annular water collecting tray; the supporting table is installed at the upper end of the main cylinder, and a gap exists between the supporting table and the upper edge of the main cylinder to form an air inlet; the rotating shaft is of a barrel structure with the upper end open, the rotating shaft is coaxially arranged at the bottom in the main barrel and is in transmission connection with a motor, a plurality of layers of fan blades horizontally extend out of the outer wall of the rotating shaft, the rotating shaft and the fan blades are made of metal materials, and when the rotating shaft rotates, condensate water on the fan blades is thrown onto the inner wall of the main barrel and falls into the annular water collecting disc; the cold source equipment is fixed to the top of the supporting table, the cold source equipment comprises a cooling pipe, and the cooling pipe downwards stretches into the end of the rotating shaft and does not make contact with the rotating shaft; according to the efficient condensate water collecting device, the multiple layers of fan blades are driven by the rotating shaft to rotate, and efficient condensate water collection is conducted.

Description

Technical Field

[0001] This invention relates to the field of water collection. More specifically, this invention relates to an automatic condensate collection device and a condensate collection method. Background Technology

[0002] Atmospheric condensate collection technology has irreplaceable application potential in both domestic and agricultural applications. For regions lacking stable freshwater sources, such as islands and deserts, or communities threatened by polluted water sources, this technology can provide decentralized drinking water replenishment solutions, reducing the cost and energy consumption of long-distance water transportation. In agriculture, condensate recovery combined with humidity control in greenhouses can realize internal circulation of irrigation water, alleviating the pressure on agricultural water resources in arid areas.

[0003] The core problem facing current atmospheric water harvesting technology lies in the difficulty of achieving stable and efficient water enrichment. Most current condensate collection devices rely on diurnal temperature differences for condensate collection. For example, the invention patent CN103806499B provides an air water collection device that uses temperature differences to prepare and collect condensate. However, under natural conditions, water vapor in the air needs to be converted into liquid water on a condensation surface. This process is significantly constrained by ambient temperature and humidity. In low-humidity areas or environments with insufficient diurnal temperature differences, the water collection rate of traditional devices drops sharply or even fails to operate because the temperature difference between the condensation surface and the atmospheric temperature is small. Such condensate collection devices cannot actively create low-temperature condensation surfaces and lack an effective mechanism to promote continuous contact between water vapor and the cold surface. In addition, condensation requires a condensation surface. An increase in the number of condensate droplets already condensed on the condensation surface will significantly reduce the subsequent condensation efficiency, further limiting the water collection efficiency. Although such condensate collection devices can achieve certain results in theory, they are overly dependent on the environment.

[0004] Besides the poor condensation effect, existing water collection devices still have many inconveniences. For example, static metal mesh or flat plate devices rely on gravity for drainage. The condensed water droplets drip slowly down the vertical surface by gravity, and the condensed water droplets stay for several minutes to tens of minutes, which seriously reduces the effective condensation area. Secondly, the condensate collection process is inconvenient, and the collected condensate is also easily affected by secondary evaporation.

[0005] Therefore, there is a need to propose a new type of automatic condensate collection device and supporting method, which can effectively collect condensate and achieve higher condensation efficiency. Summary of the Invention

[0006] One object of the present invention is to provide an automatic condensate collection device that can effectively collect condensate with higher condensation efficiency.

[0007] To achieve these and other advantages according to the invention, in a first aspect, the invention provides an automatic condensate collection device, characterized in that it comprises: a main cylinder vertically installed on the ground, the bottom edge of the main cylinder bending upward from the inside of the cylinder to form an annular water collection tray; a support platform installed at the upper end of the main cylinder, with an air inlet formed by a gap between the support platform and the upper edge of the main cylinder; a rotating shaft having an open upper end and being coaxially disposed within the main cylinder, a motor being drivenly connected to the bottom of the rotating shaft, and several layers of fan blades extending horizontally outward from the outer wall of the rotating shaft, the rotating shaft and the fan blades being made of metal, wherein, when the rotating shaft rotates, the condensate on the fan blades is thrown onto the inner wall of the main cylinder and falls into the annular water collection tray; a cold source device fixed to the top of the support platform, the cold source device including a cooling pipe extending downward into the end of the rotating shaft without contacting the rotating shaft; and a water tank connected to the annular water collection tray via piping.

[0008] Preferably, the cold source equipment further includes a semiconductor refrigeration device, a refrigerant tank, and a circulation pump. The semiconductor refrigeration device and the refrigerant tank are fixed to the support platform from top to bottom. The refrigeration chip of the semiconductor refrigeration device is fixed to the top wall of the refrigerant tank. The refrigerant tank is connected downward to the cooling pipe. A circulation pump is installed on the cooling pipe to circulate the coolant in the refrigerant tank and the cooling pipe.

[0009] Preferably, the cylinder of the rotating shaft is filled with a liquid heat-conducting medium, a sealing cover is installed at the upper end of the rotating shaft, the upper part of the sealing cover is fixed to the outside of the refrigerant tank, the lower part of the sealing cover is fitted over the top end of the rotating shaft, and multiple flexible sealing rings are provided on the inner wall of the sealing cover to seal the gap between the sealing cover and the rotating shaft.

[0010] Preferably, an air duct cover is provided under the annular water collection tray, the transmission structure between the rotating shaft and the motor passes through the air duct cover and forms a seal with the air duct cover, and a fan is provided outside the air duct cover, which is connected to the air duct cover by an air duct.

[0011] Preferably, the inner wall of the main cylinder is uniformly coated with a superhydrophobic coating.

[0012] Preferably, the outer wall of the main cylinder is provided with an outer heat insulation layer, and the outer wall of the rotating shaft is provided with an inner heat insulation layer.

[0013] Preferably, the fan blade is provided with a plurality of ribs arranged radially, and the upper and lower edges of the ribs are higher and lower than the upper and lower surfaces of the fan blade, respectively.

[0014] Preferably, it also includes an external sensor, a temperature sensing element, and a temperature control system. The external sensor collects the temperature and humidity of the atmosphere, the temperature sensing element is attached to the surface of the fan blade to record the temperature of the fan blade, and the temperature control system is signal-connected to the external sensor, the temperature sensing element, and the cold source device. The temperature control system controls the opening and closing of the cold source device to ensure that the temperature of the fan blade is lower than the dew point temperature of the atmosphere.

[0015] Preferably, the device also includes an image acquisition unit and a calculation unit that are interconnected. The image acquisition unit is used to periodically acquire condensation images of the fan blades, and the calculation unit calculates the number of condensation droplets and their coverage area on the fan blades based on the condensation images. The calculation unit is also interconnected with the motor.

[0016] Secondly, the present invention provides a condensate collection method, applied to the above-mentioned automatic condensate collection device, comprising the following steps: S1. Calculate the dew point temperature at this moment based on the atmospheric temperature and humidity. S2. Start the cooling source equipment and control the surface temperature of the fan blades to drop below the dew point temperature; S3. When the area covered by condensate droplets on the surface of the fan blades reaches the control value, start the motor to drive the rotating shaft to rotate, and under centrifugal force, the condensate droplets are thrown onto the inner wall of the main cylinder. S4. Condensed water droplets fall down the inner wall of the main cylinder, collect in the annular water collection pan, and are then discharged into the water tank.

[0017] The present invention has at least the following beneficial effects: First, the automatic condensate collection device of the present invention drives the multi-layer fan blades to rotate through the rotating shaft. It uses centrifugal force to throw the condensate droplets on the surface of the fan blades to the inner wall of the main cylinder at high speed, which breaks through the limitations of traditional gravity drainage. It is several times faster than gravity dripping and can keep the effective condensation area of ​​the fan blades above 60%. It avoids the heat insulation effect and the problem of increased saturated vapor pressure caused by water film coverage. The device has a more significant increase in water collection in low and medium humidity environments. At the same time, the design of the annular water collection plate to receive the falling water flow ensures that the detached water droplets can be quickly discharged, eliminating secondary evaporation loss.

[0018] Secondly, the automatic condensate collection device of the present invention implements non-contact cooling of the cold source equipment through a cooling pipe extending into the rotating shaft. The rotating shaft cylinder is filled with a heat-conducting medium, forming a three-stage heat transfer path of "stationary cold source + heat-conducting medium → rotating shaft → metal fan blades". This solves the contradiction in energy transmission between the rotating parts and the fixed cold source. The gap between the cooling pipe and the rotating shaft avoids mechanical friction loss and achieves efficient heat conduction through the heat-conducting medium. Compared with the traditional solution of directly cooling a large area of ​​condensation surface, this structure has lower cooling energy consumption and avoids the risk of equipment failure caused by contact with cold and heat deformation.

[0019] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall device in one technical solution of the present invention; Figure 2 This is a schematic diagram of the interior of the main cylinder in one technical solution of the present invention; Figure 3 This is a schematic diagram of the overall installation of the cold source equipment in one technical solution of the present invention; Figure 4 This is a schematic diagram of the installation of the cold source equipment in one technical solution of the present invention; Figure 5 This is a schematic diagram of the installation of the rotating shaft in one technical solution of the present invention; Figure 6 This is a schematic diagram of the sealing cover installation in one technical solution of the present invention; Figure 7 This is a schematic diagram of the layering of the outer wall of the main cylinder in one technical solution of the present invention; Figure 8 This is a schematic diagram of a fan blade in one technical solution of the present invention; Figure 9 This is a schematic diagram of a ring-shaped water collection tray in one technical solution of the present invention; Figure 10 This is a schematic diagram of the air duct cover in one technical solution of the present invention; Figure 11 This is a schematic diagram of the airflow path in one technical solution of the present invention; Figure 12 This is a schematic diagram of the sensor installation position in one technical solution of the present invention.

[0021] Reference numerals: 1-Main cylinder, 11-Annular water collection tray, 12-Air duct cover, 120-Annular chamber, 121-Upper inverted part, 13-Support frame, 101-Superhydrophobic coating, 102-Outer insulation layer, 2-Support platform, 24-Cover, 20-Air inlet, 21-Lower plate, 22-Support component, 23-Upper plate, 230-Mounting hole, 3-Cold source equipment, 31-Cooling pipe, 32-Semiconductor manufacturing... Refrigeration equipment, 33-Refrigerant tank, 34-Circulating pump, 35-Sealing cover, 351-Sealing ring, 4-Rotating shaft, 401-Inner insulation layer, 41-Rotating support, 411-Support connector, 42-Motor, 43-Coupling, 44-Drive shaft, 5-Fan blade, 51-Rib plate, 6-Fan, 7-Water tank, 71-Drain pipe, 8-External sensor, 81-Temperature sensor, 9-Image acquisition unit. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can implement it based on the description.

[0023] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0024] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the structures and components described are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] like Figures 1-12As shown, the present invention provides an automatic condensate collection device, comprising: a main cylinder 1, which is vertically installed on the ground, the bottom edge of the main cylinder 1 being bent upward from the inside of the cylinder to form an annular water collection tray 11; a support platform 2, which is installed at the upper end of the main cylinder 1, with an air inlet 20 formed between the support platform 2 and the upper edge of the main cylinder 1; a rotating shaft 4, which is a cylindrical structure with an open upper end, the rotating shaft 4 being coaxially arranged inside the main cylinder 1, the bottom of the rotating shaft 4 being connected to a motor 42, and several layers of fan blades 5 extending horizontally outward from the outer wall of the rotating shaft 4, the rotating shaft 4 and the fan blades 5 being made of metal, wherein, when the rotating shaft 4 rotates, the condensate on the fan blades 5 is thrown onto the inner wall of the main cylinder 1 and falls into the annular water collection tray 11; and a cold source device 3, which is fixed to the top of the support platform 2, the cold source device 3 including a cooling pipe 31 extending downward. The water tank 7 is connected to the annular water collection tray 11 via a pipeline. In this technical solution, the main cylinder 1 is a vertically installed cylindrical metal shell. The annular water collection tray 11 is located at the lower edge of the main cylinder 1, and the inner wall of the annular water collection tray 11 is smoothly connected to the inner wall of the main cylinder 1. The main cylinder 1 is vertically installed on the ground via a support frame 13. The upper and lower ends of the main cylinder 1 are kept open to facilitate gas flow. The rotating shaft 4 is fixed to the center of the main cylinder 1 via a rotating support 41 bearing. The rotating support 41 is fixedly connected to the inner wall of the main cylinder 1 via a support connector 411. A motor 42 and a coupling 43 are provided below the rotating shaft 4. The bottom closed end of the rotating shaft 4 is connected to the coupling 43 via a drive shaft 44. The drive shaft 44 passes through the middle of the annular water collection tray 11. The annular water collection tray 11 and the water tank 7 are connected via a drain pipe 71.

[0026] In this technical solution, the support platform 2 is a frame or bracket structure used to erect the cooling source equipment 3 above the main cylinder 1, and allows natural airflow to enter the interior of the main cylinder 1, such as... Figure 2 As shown, the support platform 2 includes a lower plate 21 formed by bending the upper edge of the main cylinder 1 outward. An upper plate 23 is supported on the lower plate 21 by a gusset plate or a columnar support 22. The cold source device 3 is installed on the upper plate 23. The cold source device 3 can be a compressor-type refrigeration device or a semiconductor refrigeration device. The heat dissipation device is installed above the upper plate 23 and can be covered by a cover 24 to prevent dust accumulation. A mounting hole 230 is opened in the middle of the upper plate 23. The cooling pipe 31 of the cold source device 3 extends from the mounting hole 230 into the interior of the rotating shaft 4, and the cooling pipe 31 does not contact the inner wall of the rotating shaft 4. The fan blades 5 and the rotating shaft 4 are both made of metal materials with good heat transfer. The fan blades 5 are connected to the outer wall of the rotating shaft 4 in a circumferential and stacked manner.

[0027] In this technical solution, the water collection process can be divided into several stages. First, the cold source equipment 3 supplies 5-10℃ refrigerant to the cooling pipe 31. The air inside the rotating shaft 4 is cooled by heat conduction. The cooling energy is conducted through the metal to lower the surface of the fan blades 5 below the dew point. Water vapor in the air condenses into water droplets on the surface of the fan blades 5. Then, the motor 42 drives the rotating shaft 4 to rotate. The water droplets on the fan blades 5 are thrown radially by centrifugal force. After hitting the inner wall of the main cylinder 1, the water droplets slide downward along the wall and flow into the annular water collection tray 11. Finally, the annular water collection tray... Water in 11 flows into water tank 7 through bottom drain, completing collection. The automatic condensate collection device of the present invention drives the multi-layer fan blades 5 to rotate through the rotating shaft 4. Using centrifugal force, the condensate droplets on the surface of the fan blades 5 are thrown at high speed to the inner wall of the main cylinder 1, breaking through the limitations of traditional gravity drainage. It is several times faster than gravity dripping, avoiding the heat insulation effect and saturated vapor pressure rise caused by water film coverage. At the same time, the design of the annular water collection tray 11 to receive the falling water flow ensures that the detached water droplets can be quickly discharged, eliminating secondary evaporation loss.

[0028] In another technical solution, the cold source device 3 further includes a semiconductor refrigeration device 32, a refrigerant tank 33, and a circulation pump 34. The semiconductor refrigeration device 32 and the refrigerant tank 33 are fixed to the support platform 2 from top to bottom. The cooling element of the semiconductor refrigeration device 32 is fixed to the top wall of the refrigerant tank 33. The refrigerant tank 33 is connected downward to the cooling pipe 31. A circulation pump 34 is installed on the cooling pipe 31 to circulate the refrigerant in the refrigerant tank 33 and the cooling pipe 31. In this technical solution, the semiconductor refrigeration device 32 operates based on the Peltier effect. When a direct current passes through the P-type and N-type... When a thermocouple composed of bismuth telluride semiconductor is used, heat is directionally transferred from the cooling side of the cooling chip attached to the refrigerant tank 33 to the hot side connected to the heat sink, thus achieving active cooling. The refrigerant tank 33 and the cooling pipe 31 are kept in a fully sealed state. The refrigerant used can be an ethylene glycol solution. The ethylene glycol solution is cooled to 5±1℃ by the cooling chip of the semiconductor refrigeration device 32 in the refrigerant tank 33. It is then circulated between the cooling pipe 31 and the refrigerant tank 33 by the circulation pump 34 at a certain flow rate. Non-contact heat exchange occurs between the cooling pipe 31 and the air inside the rotating shaft 4 through the pipe wall of the cooling pipe 31. The temperature of the rotating shaft 4 and the fan blades 5 is reduced below the dew point through heat conduction.

[0029] In another technical solution, the cylinder of the rotating shaft 4 is filled with a liquid heat-conducting medium, such as ethylene glycol solution, to further enhance the efficiency of cold transfer. Since there is a gap between the cooling pipe 31 and the inner wall of the rotating shaft 4, the thermal conductivity of air alone is low, resulting in slow and uneven cold transfer. After the heat-conducting medium is injected, the liquid forms forced convection when the rotating shaft 4 rotates, which quickly transfers the cold on the surface of the cooling pipe 31 to the inner wall of the rotating shaft 4.

[0030] In another technical solution, a sealing cover 35 is installed at the upper end of the rotating shaft 4. The upper part of the sealing cover 35 is fixed to the outside of the refrigerant tank 33, and the lower part of the sealing cover 35 is fitted over the top of the rotating shaft 4. Multiple flexible sealing rings 351 are provided on the inner wall of the sealing cover 35 to seal the gap between the sealing cover 35 and the rotating shaft 4. In the scheme of filling the rotating shaft 4 with heat transfer medium, the sealing cover 35 is fixed to the shell of the refrigerant tank 33 by the upper flange and the lower cylinder is fitted over the top of the rotating shaft 4. The core solution is to solve the problem of sealing the heat transfer medium and isolating the cold energy under the rotating condition: the multiple sealing rings 351 made of polytetrafluoroethylene installed on the inner wall of the sealing cover 35 continuously fit the outer surface of the shaft when the rotating shaft 4 rotates. The elastic deformation compensates for and adapts to the gap and deviation between the sealing cover 35 and the inner wall of the rotating shaft 4, effectively preventing the heat transfer medium vapor from overflowing and suppressing the loss of cold energy through the gap at the shaft end.

[0031] In another technical solution, a duct cover 12 is also provided below the annular water collection tray 11. The transmission structure between the rotating shaft 4 and the motor 42 passes through the duct cover 12 and forms a seal with the duct cover 12. A fan 6 is also provided outside the duct cover 12, and it is connected to the duct cover 12 by a duct. In this technical solution, considering that under natural convection, humid air only enters the air inlet 20 slowly by relying on density difference, resulting in insufficient water vapor replenishment around the fan blades 5 and failing to achieve the ideal water collection effect, an active flow enhancement scheme is added. In order to avoid affecting the water collection effect of the annular water collection tray 11, air vents cannot be set on the outer wall of the main cylinder 1. The duct cover 12 is set below the annular water collection tray 11 and is bent towards the center. The upper inverted portion 121 is formed by a curved ring shape. The drive shaft 44 passes through the middle of the upper inverted portion 121 and is sealed to the upper inverted portion 121. The inside of the duct cover 12 forms an annular chamber 120 around the upper inverted portion 121. The air inlet of the annular chamber 120 is the annular gap between the upper inverted portion 121 and the annular water collection plate 11. The air outlet of the annular chamber 120 is located on the side wall of the duct cover 12. A fan 6 is installed outside the main cylinder 1. The fan 6 can be an axial flow fan. It is connected to the annular chamber 120 through a duct. After the fan 6 is started, a negative pressure zone is formed in the annular chamber 120, which promotes the entry of external air from the air inlet 20 into the main cylinder 1 and makes full contact with the fan blades 5.

[0032] In another technical solution, the inner wall of the main cylinder 1 is uniformly coated with a superhydrophobic coating 101. The superhydrophobic coating 101 is a functional coating with a contact angle >150° and a roll-off angle <5°. It can be made of composite materials such as nano-silica or polydimethylsiloxane. The superhydrophobic coating 101 makes it difficult for water droplets on it to spread and form a water film, and they only exist in a spherical shape. During the manufacturing process of the main cylinder 1, after the coating is sprayed on the inner wall of the main cylinder 1, it forces the condensed water droplets to remain discrete spherical, which significantly inhibits the spread of water droplets that evaporate and are thrown onto the main cylinder 1 to form a water film, which is not conducive to collection and is easily evaporated again.

[0033] In another technical solution, an outer insulation layer 102 is provided on the outer wall of the main cylinder 1, and an inner insulation layer 401 is provided on the outer wall of the rotating shaft 4. The outer insulation layer 102 on the outer wall of the main cylinder 1 and the inner insulation layer 401 on the outer wall of the rotating shaft 4 together form a cold insulation layer to minimize ineffective cold dissipation. The outer insulation layer 102 can be made of 40mm thick inorganic sprayed insulation mortar, which is applied to the outer surface of the main cylinder 1 by high-pressure spraying. Its function is to block the transfer of ambient heat into the cylinder and inhibit the internal cold airflow from dissipating heat outward through the cylinder wall of the main cylinder 1. The inner insulation layer 401 can be coated with a 0.8mm thick polyurethane layer on the rotating shaft 4, which mainly solves the problem of cold bridging in the mechanical structure.

[0034] In another technical solution, the fan blade 5 is radially arranged with several ribs 51. The upper and lower edges of the ribs 51 are higher and lower than the upper and lower surfaces of the fan blade 5, respectively. The radially arranged ribs 51 on the surface of the fan blade 5 extend beyond the plane of the fan blade by 0.5 to 1 mm to form a three-dimensional grid structure. The ribs 51 first guide the water droplets to directionally detach at the dynamic level. That is, under the condition of rotation, the sidewall of the ribs 51 applies shear force to the water droplets, which significantly weakens the contact angle hysteresis effect of the liquid-solid interface and forces the water droplets to move radially and accelerate along the ribs 51. The detachment time of the condensed water droplets is greatly reduced. Secondly, at the level of heat and mass transfer, the ribs 51 increase the effective condensation area on both sides, which further enhances heat and mass transfer. Finally, at the level of mechanical performance, the extension design of the ribs 51 across the upper and lower surfaces of the fan blade 5 forms a spatial truss network, which improves the strength of the fan blade 5.

[0035] In another technical solution, an external sensor 8, a temperature sensing element 81, and a temperature control system are also included. The external sensor 8 collects atmospheric temperature and humidity data. The temperature sensing element 81 is attached to the surface of the fan blade 5 to record the temperature of the fan blade 5. The temperature control system is connected to the external sensor 8, the temperature sensing element 81, and the cooling source device 3. The temperature control system controls the opening and closing of the cooling source device 3 to keep the temperature of the fan blade 5 below the atmospheric dew point temperature. The external sensor 8 monitors the atmospheric temperature and relative humidity in real time, and the temperature control system calculates the current dew point temperature based on this data. Simultaneously, the temperature sensing element 81 attached to the surface of the fan blade 5 continuously provides feedback on the actual temperature of the fan blade. The temperature control system adopts a feedforward-feedback composite control strategy: first, a target temperature is set based on the dew point temperature; then, the cooling power of the cooling source device 3 is dynamically adjusted through a PID algorithm to keep the surface temperature of the fan blade 5 stably maintained within the target range. This solution overcomes the energy waste problem of traditional constant cooling modes. Under conditions of large day-night temperature differences or sudden humidity changes, cooling energy consumption is reduced, while avoiding the risk of frosting caused by overcooling of the fan blade 5. In another technical solution, an image acquisition unit 9 and a calculation unit are also included, which are interconnected. The image acquisition unit 9 is used to periodically acquire condensation images of the fan blades 5. The calculation unit calculates the number of condensed water droplets and their coverage area on the fan blades 5 based on the condensation images. The calculation unit is also interconnected with the motor 42. In this technical solution, the image acquisition unit 9 is set inside the main cylinder 1 and linked with the calculation unit. Its feasibility is based on mature condensation image processing technology. The condensation state can be accurately quantified through image segmentation and feature extraction. This solution uses this principle to calculate the number of water droplets and their coverage area on the surface of the fan blades 5. The calculation unit dynamically starts and stops the motor 42 according to the coverage area threshold, breaking through the lag of traditional timed or temperature-controlled systems, realizing "centrifugal drainage on demand", greatly reducing the motor's ineffective running time, and avoiding the problem of reduced condensation efficiency caused by excessive water droplet accumulation.

[0036] A condensate collection method, applied to the aforementioned automatic condensate collection device, is characterized by comprising the following steps: S1. The dew point temperature at this moment is calculated based on the atmospheric temperature and humidity. Specifically, the dew point temperature can be calculated using the Magnus formula based on the atmospheric temperature and relative humidity collected in real time by the external sensor 8. T d .

[0037] S2. Start the cooling source equipment 3 and control the surface temperature of the fan blades 5 to drop below the dew point temperature. Specifically, the cooling source equipment 3... T d Set the target temperature for fan blade 5 T tA pulse-width modulated current is applied to the semiconductor cooling device 32, which, in conjunction with the circulating pump 34, drives the ethylene glycol solution to circulate. The cooling energy is transferred to the fan blades 5 through the heat-conducting medium inside the rotating shaft 4. The temperature sensor 81 provides real-time feedback on the surface temperature of the fan blades 5 and the target temperature. T t Less than dew point temperature T d The PID algorithm is used to adjust the cooling power to stabilize the temperature. T t Within a range of ±0.3℃, condensation is ensured to continue.

[0038] S3. When the area covered by condensate droplets on the surface of fan blade 5 reaches the control value, the motor 42 is started to drive the rotating shaft 4 to rotate. Under centrifugal force, the condensate droplets are thrown onto the inner wall of the main cylinder 1. Specifically, the image acquisition unit 9 takes a picture of the condensation on the surface of fan blade 5 every 10 minutes. The calculation unit uses the image segmentation method to extract the outline of the water droplets and calculates the coverage area of ​​the condensate droplets. When the coverage area reaches the threshold, the calculation unit sends a start command to the motor 42. The motor 42 drives the rotating shaft 4 to rotate for several seconds to make the water droplets fall off.

[0039] S4. Condensed water droplets fall down the inner wall of the main cylinder 1, collect in the annular water collection pan 11, and are then discharged into the water tank.

[0040] It should be noted that although the steps are described in a specific order above, this does not mean that they must be performed in that order. In fact, some of these steps can be executed concurrently, or even in a different order, as long as the required functionality is achieved. The number of devices and processing scale described herein are for simplification of the invention; applications, modifications, and variations of this invention will be readily apparent to those skilled in the art.

[0041] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An automatic condensate collection device, characterized in that, include: The main cylinder (1) is vertically installed on the ground. The bottom edge of the main cylinder (1) bends upward from the inside of the cylinder to form a ring-shaped water collection plate (11). A support platform (2) is installed at the upper end of the main cylinder (1), and there is a gap between the support platform (2) and the upper edge of the main cylinder (1) to form an air inlet (20); The rotating shaft (4) is a cylindrical structure with an open top. The rotating shaft (4) is coaxially arranged inside the main cylinder (1). The bottom of the rotating shaft (4) is connected to a motor (42). Several layers of fan blades (5) extend horizontally outward from the outer wall of the rotating shaft (4). The rotating shaft (4) and the fan blades (5) are both made of metal. When the rotating shaft (4) rotates, the condensate on the fan blades (5) is thrown onto the inner wall of the main cylinder (1) and falls into the annular water collection tray (11). A cold source device (3) is fixed to the top of the support platform (2). The cold source device (3) includes a cooling pipe (31) that extends downward into the end of the rotating shaft (4) without contacting the rotating shaft (4). Water tank (7), which is connected to the annular water collection tray (11) via pipeline.

2. The automatic condensate collection device as described in claim 1, characterized in that, The cold source device (3) also includes a semiconductor refrigeration device (32), a refrigerant tank (33), and a circulation pump (34). The semiconductor refrigeration device (32) and the refrigerant tank (33) are fixed on the support platform (2) from top to bottom. The refrigeration chip of the semiconductor refrigeration device (32) is fixed on the top wall of the refrigerant tank (33). The refrigerant tank (33) is connected downward to the cooling pipe (31). The circulation pump (34) is installed on the cooling pipe (31) to circulate the coolant in the refrigerant tank (33) and the cooling pipe (31).

3. The automatic condensate collection device as described in claim 1, characterized in that, The cylinder of the rotating shaft (4) is filled with a liquid heat-conducting medium. A sealing cover (35) is installed at the upper end of the rotating shaft (4). The upper part of the sealing cover (35) is fixed to the outside of the refrigerant tank (33), and the lower part of the sealing cover (35) is fitted over the top of the rotating shaft (4). Multiple flexible sealing rings (351) are provided on the inner wall of the sealing cover (35) to seal the gap between the sealing cover (35) and the rotating shaft (4).

4. The automatic condensate collection device as described in claim 1, characterized in that, A duct cover (12) is also provided under the annular water collection tray (11). The transmission structure between the rotating shaft (4) and the motor (42) passes through the duct cover (12) and forms a seal with the duct cover (12). A fan (6) is also provided outside the duct cover (12), and it is connected to the duct cover (12) by a duct.

5. The automatic condensate collection device as described in claim 1, characterized in that, The inner wall of the main cylinder (1) is uniformly coated with a superhydrophobic coating (101).

6. The automatic condensate collection device as described in claim 1, characterized in that, The outer wall of the main cylinder (1) is provided with an outer heat insulation layer (102), and the outer wall of the rotating shaft (4) is provided with an inner heat insulation layer (401).

7. The automatic condensate collection device as described in claim 1, characterized in that, The fan blade (5) is provided with a number of ribs (51) arranged radially, and the upper and lower edges of the ribs (51) are higher and lower than the upper and lower surfaces of the fan blade (5), respectively.

8. The automatic condensate collection device as described in claim 1, characterized in that, It also includes an external sensor (8), a temperature sensor (81), and a temperature control system. The external sensor (8) collects the temperature and humidity of the atmosphere. The temperature sensor (81) is attached to the surface of the fan blade (5) to record the temperature of the fan blade (5). The temperature control system is connected to the external sensor (8), the temperature sensor (81), and the cold source device (3). The temperature control system controls the opening and closing of the cold source device (3) so that the temperature of the fan blade (5) is lower than the dew point temperature of the atmosphere.

9. The automatic condensate collection device as described in claim 1, characterized in that, It also includes an image acquisition unit (9) and a calculation unit that are interconnected. The image acquisition unit (9) is used to periodically acquire condensation images of the fan blades (5). The calculation unit calculates the number of condensation droplets and the coverage area on the fan blades (5) based on the condensation images. The calculation unit is interconnected with the motor (42).

10. A condensate collection method, applied to the automatic condensate collection device according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Calculate the dew point temperature at this moment based on the atmospheric temperature and humidity. S2. Start the cooling source equipment (3) and control the surface temperature of the fan blades (5) to drop below the dew point temperature; S3. When the area covered by condensed water droplets on the surface of the fan blade (5) reaches the control value, start the motor (42) to drive the rotating shaft (4) to rotate, and under centrifugal force, the condensed water droplets are thrown onto the inner wall of the main cylinder (1). S4. Condensed water droplets fall down the inner wall of the main cylinder (1), collect in the annular water collection pan (11), and are then discharged into the water tank.

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