Adsorption type air water taking device driven by low-grade heat source and using method

Abstract

The invention is suitable for the technical field of water taking devices, and provides an adsorption type air water taking device driven by a low-grade heat source and a using method, the adsorption type air water taking device comprises a solar heat collector and a water taking unit, and each of an adsorption bed group I and an adsorption bed group II comprises a plurality of surface air coolers and adsorbents; the surface air cooler comprises a plurality of fins and heat exchange tubes, and the heat exchange tubes circuitously penetrate through the fins; gaps among the fins serve as adsorbent filling areas to be filled with adsorbents; the heat exchange tube is connected with the solar heat collector in an on-off manner; the vacuumizing device is connected with the adsorbent filling area in an on-off manner; the blowing device is connected with the adsorbent filling area in an on-off manner; the water vapor condensation and collection unit is connected with the adsorbent filling area in an on-off manner, so that water can be extracted from air, the adsorption bed group does not need to be repeatedly disassembled, the boiling point of water can be reduced by arranging the vacuumizing device, and water vapor can be conveniently desorbed by an adsorbent.

Description

Technical Field

[0001] The present invention relates to the technical field of water intake devices, and in particular to an adsorption air water intake device driven by a low-grade heat source and a usage method thereof. Background Art

[0002] Fresh water is a precious resource for the survival of life. In areas such as residential houses on islands, barracks of island garrisons, and island monitoring stations, the shortage of water resources is becoming increasingly severe, and fresh water resources are difficult to meet the needs of people's production and life. The moisture in the air has a large storage capacity and the characteristics of recyclability. Air water intake is one of the effective ways to solve the shortage of fresh water resources.

[0003] Chinese Patent Document No.: CN117738286A, patent name: Series modular adsorption air water intake unit based on solar energy and usage method thereof. It uses a super hygroscopic hollow cylindrical composite adsorbent material of LiCl and activated carbon to adsorb water vapor in the air, and then uses the heat collected by the vacuum heat collector for desorption. The air water intake efficiency is high and no electric energy is consumed. However, during the adsorption stage, the adsorbent packed bed needs to be placed outside the vacuum heat collector, and during desorption, the moisture-absorbed adsorption packed bed is assembled inside the solar vacuum heat collector. It needs to be disassembled and installed repeatedly, the operation process is cumbersome, and the desorption of water vapor cannot be carried out at night or on rainy and cloudy days. The air water intake work is restricted by light and is difficult to be continuous, and the adsorption and desorption processes are single. Summary of the Invention

[0004] Aiming at the above defects, the purpose of the present invention is to provide an adsorption air water intake device driven by a low-grade heat source and a usage method thereof, which can carry out air water intake without repeatedly disassembling the adsorption bed group. The setting of the vacuum pumping device can reduce the boiling point of water and facilitate the desorption of water vapor by the adsorbent; the setting of two adsorption bed groups is conducive to the alternation of adsorption and desorption work, and thus conducive to the continuous generation of liquid water; using solar energy as the heat source during the day can reduce the consumption of electric energy; the setting of solar panels and storage batteries can provide electric energy for the entire device without additional electric energy transmission to the device; the setting of the heater can heat the circulating liquid passing through the heater, so that the device can also carry out air water intake at night or on rainy and cloudy days.

[0005] To achieve the above purpose, the present invention provides an adsorption air water intake device driven by a low-grade heat source, including a solar collector and a water intake unit. The water intake unit includes adsorption bed group one, adsorption bed group two, a vacuum pumping device, a blowing device, and a water vapor condensation and collection unit. Both adsorption bed group one and adsorption bed group two include a plurality of surface coolers.

[0006] The surface cooler includes a plurality of fins and heat exchange tubes, and the heat exchange tubes wind through the fins; the gaps between the fins serve as adsorbent filling areas for filling adsorbents; the heat exchange tubes are connectable to and disconnectable from a solar collector, and a liquid circulates between the heat exchange tubes and the solar collector;

[0007] The vacuum pumping device is connectable to and disconnectable from the adsorbent filling area, and the vacuum pumping device is used to pump vacuum for the adsorbent filling area; the blowing device is connectable to and disconnectable from the adsorbent filling area, and the blowing device is used to introduce external air into the adsorbent filling area; the water vapor condensation and collection unit is connectable to and disconnectable from the adsorbent filling area, and the water vapor condensation and collection unit is used to condense and collect the water vapor desorbed by the adsorbent.

[0008] For the adsorptive air water intake device driven by low-grade heat sources according to the present invention, both the first adsorbent bed group and the second adsorbent bed group are provided with detachable maintenance plates; both the first adsorbent bed group and the second adsorbent bed group include surface cooler supports, adsorbent bed bases, waterway connectors, adsorbent bed hot water outlet pipes, and adsorbent bed hot water inlet pipes. The surface coolers are all located above the adsorbent bed bases, and the adsorbent bed bases provide support for the lowermost surface cooler; the surface coolers are spaced apart from the surface cooler supports, and the surface cooler supports respectively provide support for the adjacent surface coolers above; the adsorbent bed hot water outlet pipes are connected to the surface cooler outlet pipes through detachable waterway connectors, and the adsorbent bed hot water inlet pipes are connected to the surface cooler inlet pipes through detachable waterway connectors; both ends of the heat exchange tubes are respectively connected to the surface cooler inlet pipes and the surface cooler outlet pipes; the adsorbent bed hot water inlet pipes and the adsorbent bed hot water outlet pipes are all connected to the solar collector.

[0009] For the adsorptive air water intake device driven by low-grade heat sources according to the present invention, the solar collector includes a vacuum heat pipe type solar collector, and the vacuum heat pipe type solar collector is connected to a total hot water inlet pipe; a circulation pump is provided on the total hot water inlet pipe; the total hot water inlet pipe is connected to an electric three-way ball valve, and the other two ends of the electric three-way ball valve are respectively connected to two adsorbent bed hot water inlet pipes; the adsorbent bed hot water outlet pipes are all connected to a total hot water outlet pipe, and the total hot water outlet pipe is connected to the vacuum heat pipe type solar collector.

[0010] For the adsorptive air water intake device driven by low-grade heat sources according to the present invention, the vacuum pumping device includes a vacuum pump, a first adsorbent bed vacuum valve, and a second adsorbent bed vacuum valve. The adsorbent filling area of the first adsorbent bed group is connected to the first adsorbent bed vacuum valve, and the first adsorbent bed vacuum valve is connected to the vacuum pump; the adsorbent filling area of the second adsorbent bed group is connected to the second adsorbent bed vacuum valve, and the second adsorbent bed vacuum valve is connected to the vacuum pump.

[0011] According to the adsorptive air water intake device driven by a low-grade heat source of the present invention, the blowing device includes an adsorption bed fan, an adsorption bed first air inlet valve, an adsorption bed second air inlet valve, an adsorption bed first air outlet valve, and an adsorption bed second air outlet valve. The adsorbent filling area of the first adsorption bed group is connected to the adsorption bed first air inlet valve, and the adsorption bed first air inlet valve is connected to the adsorption bed fan; the adsorbent filling area of the second adsorption bed group is connected to the adsorption bed second air inlet valve, and the adsorption bed second air inlet valve is connected to the adsorption bed fan; the first adsorption bed group is provided with an adsorption bed first air outlet valve, and the adsorption bed first air outlet valve is used to discharge the outside air after the water vapor in the air is adsorbed by the adsorbent; the second adsorption bed group is provided with an adsorption bed second air outlet valve, and the adsorption bed second air outlet valve is used to discharge the outside air after the water vapor in the air is adsorbed by the adsorbent.

[0012] According to the adsorptive air water intake device driven by a low-grade heat source of the present invention, the water vapor condensation and collection unit includes a condenser, a condenser fan, an upper vacuum chamber, a lower vacuum chamber, a communication valve one, and a communication valve two. The condenser fan is used for the heat dissipation of the condenser; the condenser includes finned tubes, the upper vacuum chamber is connected to the lower vacuum chamber through the finned tubes, and the lower vacuum chamber is used to store condensed water; the upper vacuum chamber is connected to the communication valve one, and the communication valve one is connected to the adsorbent filling area of the first adsorption bed group; the upper vacuum chamber is connected to the communication valve two, and the communication valve two is connected to the adsorbent filling area of the second adsorption bed group; a water intake valve is provided in the lower vacuum chamber.

[0013] According to the adsorptive air water intake device driven by a low-grade heat source of the present invention, the surface cooler is detachably connected to a breathable cover plate for preventing the adsorbent from falling off.

[0014] According to the adsorptive air water intake device driven by a low-grade heat source of the present invention, the solar collector is connected to the heater; the heater is connected to the storage battery; the storage battery is connected to the solar panel; the storage battery is used to provide the electric energy consumed during air water intake.

[0015] The present invention provides a method for using an adsorptive air water intake device driven by a low-grade heat source, including the following steps:

[0016] S1: The blowing device supplies outside air to the adsorbent filling area of the first adsorption bed group, and the adsorbent adsorbs the water vapor in the air. While the first adsorption bed group adsorbs the water vapor, the desorption work of the second adsorption bed group is carried out. The vacuum pumping device pumps the adsorbent filling area of the second adsorption bed group to vacuum. After stopping the vacuum pumping, the solar collector supplies high-temperature liquid to the heat exchange tubes of the second adsorption bed group, and the heat is conducted to the adsorbent through the tube wall and fins of the heat exchange tubes. The temperature of the adsorbent after absorbing heat rises above the boiling point of water, and the adsorbent in the second adsorption bed group desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection;

[0017] S2: The blowing device introduces external air into the adsorbent filling area of adsorption bed group two. The adsorbent adsorbs water vapor in the air. While adsorption bed group two adsorbs water vapor, the desorption operation of adsorption bed group one is carried out. The vacuum pumping device pumps vacuum for the adsorbent filling area of adsorption bed group one. After stopping the vacuum pumping, the solar collector introduces high-temperature liquid into the heat exchange tubes of adsorption bed group one. The heat is conducted from the tube wall and fins of the heat exchange tubes to the adsorbent. The temperature of the adsorbent after absorbing heat rises above the boiling point of water, and the adsorbent in adsorption bed group one desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection.

[0018] S3: The working processes of S1 and S2 are cycled.

[0019] The present invention provides an adsorption-type air water intake device driven by low-grade heat sources, including a solar collector and a water intake unit. The setting of the solar collector can use solar energy as a heat source to heat the liquid, reducing energy consumption. The water intake unit includes adsorption bed group one, adsorption bed group two, a vacuum pumping device, a blowing device, and a water vapor condensation and collection unit. Both adsorption bed group one and adsorption bed group two include a number of surface coolers. The setting of the two adsorption bed groups enables one adsorption bed group to carry out the adsorption operation while the other adsorption bed group carries out the desorption operation, improving the continuity of producing liquid water. The surface cooler includes a number of fins and heat exchange tubes. The heat exchange tubes wind through the fins. The gaps between the fins are used as the adsorbent filling area to fill the adsorbent. The setting of the fins can increase the heat conduction area, facilitating heat exchange between the heat exchange tubes and the adsorbent and enhancing the heat conduction efficiency. The heat exchange tubes are connectable to the solar collector in a switchable manner, and hot water circulates between the heat exchange tubes and the solar collector. The solar collector can provide a continuous supply of hot water for the heat exchange tubes during the desorption process, which is beneficial to ensuring the continuous progress of the desorption operation. When carrying out the adsorption operation, the solar collector does not provide hot water for the heat exchange tubes, which is beneficial to preventing the water vapor adsorbed by the adsorbent from evaporating again during the adsorption process. The vacuum pumping device is connectable to the adsorbent filling area in a switchable manner. The vacuum pumping device is used to pump vacuum for the adsorbent filling area. The setting of the vacuum pumping device can reduce the boiling point of the water attached to the adsorbent, which is beneficial to enabling the water attached to the adsorbent to desorb and evaporate water vapor at a lower temperature. The blowing device is connectable to the adsorbent filling area in a switchable manner. The blowing device is used to introduce external air into the adsorbent filling area. The setting of the blowing device can accelerate the air flow, enabling a large amount of external humid air to pass through the adsorbent filling area in a short time, which is beneficial to shortening the time required for the adsorption operation. The water vapor condensation and collection unit is connectable to the adsorbent filling area in a switchable manner. The water vapor condensation and collection unit is used to condense and collect the water vapor desorbed by the adsorbent. The water vapor condensation and collection unit can condense the water vapor generated during the desorption process and collect and store the condensed water at the same time. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the working process of the present invention;

[0021] Figure 2 It is a front view of the internal structure of the adsorption bed group;

[0022] Figure 3 It is a top view of the structure of the surface cooler;

[0023] In the figure: 1 - Vacuum heat pipe type solar collector, 2 - Circulation water pump, 3 - Electric three-way ball valve, 4 - Adsorption bed group one, 5 - Adsorption bed group two, 6 - Condenser, 7 - Condenser fan, 8 - Lower vacuum chamber, 9 - Adsorption bed fan, 10 - Adsorption bed one air inlet valve, 11 - Adsorption bed two air inlet valve, 12 - Adsorption bed one air outlet valve, 13 - Adsorption bed two air outlet valve, 14 - Adsorption bed one vacuum valve, 15 - Adsorption bed two vacuum valve, 16 - Connecting valve one, 17 - Connecting valve two, ...... Specific embodiments

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] See Figure 1 , Figure 2 , Figure 3 The present invention provides an adsorption type air water intake device driven by low-grade heat sources. The adsorption type air water intake device driven by low-grade heat sources includes a solar collector and a water intake unit. The setting of the solar collector can use solar energy as a heat source to heat the liquid, reducing energy consumption. The water intake unit includes an adsorption bed group one 4, an adsorption bed group two 5, a vacuum pumping device, a blowing device, and a water vapor condensation and collection unit. The working processes of the two adsorption bed groups do not interfere with each other (while one adsorption bed group is performing adsorption work, the other adsorption bed group can perform desorption work, improving the continuity of liquid water production). Both the adsorption bed group one 4 and the adsorption bed group two 5 include a number of surface coolers 19. The setting of multiple surface coolers 19 can increase the amount of adsorbent filling and at the same time increase the heat exchange area with the adsorbent, enabling the adsorption bed group to adsorb more water vapor in a single adsorption operation.

[0026] The finned tube heat exchanger 19 includes a number of fins 26 and heat exchange tubes 27. The heat exchange tubes 27 wind through the fins 26. The fins 26 and the heat exchange tubes 27 are fixedly installed on the finned tube heat exchanger frame 25. The gaps between the fins 26 serve as adsorbent filling areas to fill adsorbents (such as silica gel particle adsorbents). The adsorbent filling areas within an adsorption bed group are interconnected. The arrangement of the fins 26 can conduct the heat of the heat exchange tubes 27. Filling the adsorbents in the gaps between the fins 26 can increase the contact area between the adsorbents and the fins 26, which is beneficial for the fins 26 to transfer the heat of the heat exchange tubes 27 to the adsorbents. The heat exchange tubes 27 are connectable to and disconnectable from the solar collector, and hot water circulates between the heat exchange tubes 27 and the solar collector. During the desorption operation, the hot water inside the solar collector can be continuously introduced into the heat exchange tubes 27, which is beneficial for keeping the adsorbents within a certain temperature range all the time, causing the water adsorbed on the adsorbents to boil continuously and desorb water vapor.

[0027] The vacuum pumping device is connectable to and disconnectable from the adsorbent filling area. The vacuum pumping device is used to pump the adsorbent filling area into a vacuum. After the adsorbent filling area is pumped into a vacuum, the boiling point of water decreases, and the water adsorbed on the adsorbents is more likely to boil and desorb water vapor. The blowing device is connectable to and disconnectable from the adsorbent filling area. The blowing device is used to introduce external air into the adsorbent filling area. The arrangement of the blowing device can increase the air flow rate, enabling the adsorbents to contact and adsorb more water vapor in a short time, which is beneficial for shortening the adsorption operation time. The water vapor condensation and collection unit is connectable to and disconnectable from the adsorbent filling area. The water vapor condensation and collection unit is used to condense and collect the water vapor desorbed by the adsorbents.

[0028] See Figure 1 、 Figure 2 、 Figure 3, Further, the adsorption bed group 1 4 and the adsorption bed group 2 5 are both provided with detachable maintenance plates. After removing the maintenance plates, the surface cooler 19 can be taken out. After taking out the surface cooler 19, the adsorbent filled in the gaps of the fins 26 can be replaced. The adsorption bed group 1 4 and the adsorption bed group 2 5 both include a surface cooler support 22, an adsorption bed base 23, a waterway connector 24, an adsorption bed hot water outlet pipe 20, and an adsorption bed hot water inlet pipe 21. The surface cooler 19 is located above the adsorption bed base 23. The adsorption bed base 23 provides support for the lowermost surface cooler 19. The surface cooler 19 and the surface cooler support 22 are arranged at intervals. The surface cooler supports 22 respectively provide support for the adjacent surface coolers 19 above. The surface cooler support 22 is fixedly connected to the adsorption bed base 23. The adsorption bed hot water outlet pipe 20 is connected to the surface cooler outlet pipe 28 through a detachable waterway connector 24 (the waterway connector 24 is a connecting piece between pipes, and the detachable connecting piece between pipes is a mature prior art and will not be elaborated here). The adsorption bed hot water inlet pipe 21 is connected to the surface cooler inlet pipe 29 through a detachable waterway connector 24. Both ends of the heat exchange tube 27 are respectively connected to the surface cooler inlet pipe 29 and the surface cooler outlet pipe 28. The adsorption bed hot water inlet pipe 21 and the adsorption bed hot water outlet pipe 20 are both connected to the solar collector. After removing the two waterway connectors 24, the surface cooler 19 can be pulled out, and the adsorbent in the gaps of the fins 26 of the surface cooler 19 can be replaced.

[0029] The solar collector includes a vacuum heat pipe type solar collector 1. The vacuum heat pipe type solar collector 1 is connected to the total hot water inlet pipe. The total hot water inlet pipe is provided with a circulation pump 2. The setting of the circulation pump 2 can provide power for the movement of water. The total hot water inlet pipe is connected to an electric three-way ball valve 3. The other two ends of the electric three-way ball valve 3 are respectively connected to the two adsorption bed hot water inlet pipes 21. The adsorption bed hot water outlet pipes 20 are both connected to the total hot water outlet pipe. The total hot water outlet pipe is connected to the vacuum heat pipe type solar collector 1. The evacuation device includes a vacuum pump (not shown in the figure), an adsorption bed 1 vacuum valve 14, and an adsorption bed 2 vacuum valve 15. The adsorbent filling area of the adsorption bed group 1 4 is connected to the adsorption bed 1 vacuum valve 14. The adsorption bed 1 vacuum valve 14 is connected to the vacuum pump. The adsorbent filling area of the adsorption bed group 2 5 is connected to the adsorption bed 2 vacuum valve 15. The adsorption bed 2 vacuum valve 15 is connected to the vacuum pump. The vacuum pump can extract the air in the adsorbent filling area, reduce the pressure in the adsorbent filling area, and then reduce the boiling point of the water attached to the adsorbent, facilitating the boiling and desorbing of the water attached to the adsorbent into water vapor.

[0030] The blowing device includes an adsorption bed fan 9, an adsorption bed inlet valve 10, an adsorption bed second inlet valve 11, an adsorption bed outlet valve 12, and an adsorption bed second outlet valve 13. The adsorbent filling area of the first adsorption bed group 4 is connected to the adsorption bed inlet valve 10, the adsorption bed inlet valve 10 is connected to the adsorption bed fan 9, the adsorbent filling area of the second adsorption bed group 5 is connected to the adsorption bed second inlet valve 11, the adsorption bed second inlet valve 11 is connected to the adsorption bed fan 9, the first adsorption bed group 4 is provided with an adsorption bed outlet valve 12, and the adsorption bed outlet valve 12 is used to discharge the outside air after the water vapor is adsorbed by the adsorbent. The second adsorption bed group 5 is provided with an adsorption bed second outlet valve 13, and the adsorption bed second outlet valve 13 is used to discharge the outside air after the water vapor is adsorbed by the adsorbent.

[0031] See Figure 1 、 Figure 2 、 Figure 3 Furthermore, the water vapor condensation and collection unit of the present invention includes a condenser 6, a condenser fan 7, an upper vacuum chamber, a lower vacuum chamber 8, a connecting valve 16, and a connecting valve 17. The condenser fan 7 is used for the heat dissipation of the condenser 6. The condenser 6 includes finned tubes. The upper vacuum chamber is connected to the lower vacuum chamber 8 through the finned tubes. The lower vacuum chamber 8 is used to store condensed water (the condensed liquid water drops into the lower vacuum chamber 8 under the action of gravity for storage). The upper vacuum chamber is connected to the connecting valve 16, and the connecting valve 16 is connected to the adsorbent filling area of the first adsorption bed group 4. The upper vacuum chamber is connected to the connecting valve 17, and the connecting valve 17 is connected to the adsorbent filling area of the second adsorption bed group 5. A water intake valve 18 is provided on the lower vacuum chamber 8. The surface cooler 19 is detachably connected to a breathable cover plate for preventing the adsorbent from falling off (the breathable cover plate can be selected as an 80-mesh wire mesh, which can ensure the smooth passage of air and water vapor while avoiding the adsorbent from detaching from the gaps of the fins 26 of the surface cooler 19). The solar collector is connected to a heater (not shown in the figure). The heater can heat the liquid passing through the heater. In the night or rainy weather, the setting of the heater can keep the air water intake work continuous. The heater is connected to a storage battery, and the storage battery is connected to a solar panel. The storage battery is used to provide the electric energy consumed during air water intake. The setting of the storage battery and the solar panel can provide power for the entire device without the need to connect an external power supply to the device additionally.

[0032] See Figure 1 、 Figure 2 、 Figure 3 The present invention provides a method for using an adsorption type air water intake device driven by a low-grade heat source. The method for using the adsorption type air water intake device driven by a low-grade heat source includes the following steps:

[0033] S1: The blowing device passes external air into the adsorbent filling area of the first adsorption bed group 4. The adsorbent adsorbs water vapor in the air. While the first adsorption bed group 4 adsorbs water vapor, the desorption of the second adsorption bed group 5 is carried out. The vacuum pumping device evacuates the adsorbent filling area of the second adsorption bed group 5. After stopping the vacuum pumping, the solar collector passes high-temperature liquid into the heat exchange tube 27 of the second adsorption bed group 5. The heat is conducted from the tube wall of the heat exchange tube 27 and the fin 26 to the adsorbent. After absorbing heat, the temperature of the adsorbent rises above the boiling point of water, and the adsorbent in the second adsorption bed group 5 desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection;

[0034] S2: The blowing device passes external air into the adsorbent filling area of the second adsorption bed group 5. The adsorbent adsorbs water vapor in the air. While the second adsorption bed group 5 adsorbs water vapor, the desorption of the first adsorption bed group 4 is carried out. The vacuum pumping device evacuates the adsorbent filling area of the first adsorption bed group 4. After stopping the vacuum pumping, the solar collector passes high-temperature liquid into the heat exchange tube 27 of the first adsorption bed group 4. The heat is conducted from the tube wall of the heat exchange tube 27 and the fin 26 to the adsorbent. After absorbing heat, the temperature of the adsorbent rises above the boiling point of water, and the adsorbent in the first adsorption bed group 4 desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection;

[0035] S3: The working processes of S1 and S2 are cycled.

[0036] Working principle: The solar panel converts solar energy into electrical energy and stores it in the storage battery. The storage battery supplies electrical energy to the whole device. During the day, the solar energy is relied on to heat the liquid inside the vacuum heat pipe type solar collector 1. At night or on rainy and cloudy days, the heater can heat the liquid passing through the heater, enabling the whole device to carry out air water intake even at night or on rainy and cloudy days.

[0037] Desorption of the first adsorption bed group 4 and adsorption of the second adsorption bed group 5:

[0038] The air inlet valve 10 of the first adsorption bed and the air outlet valve 12 of the first adsorption bed are closed. The first connecting valve 16 and the second connecting valve 17 are closed. The vacuum valve 14 of the first adsorption bed is opened to evacuate the first adsorption bed group 4. After reaching the set time, the vacuum valve 14 of the first adsorption bed is closed, and the first connecting valve 16 is opened. The electric three-way ball valve 3 switches the valve position. The heated liquid in the solar collector enters the heat exchange tube 27 of the surface cooler 19 inside the first adsorption bed group 4 through the total hot water inlet pipe, the adsorption bed hot water inlet pipe 21, and the surface cooler inlet pipe 29. The heat is conducted from the tube wall of the heat exchange tube 27 and the fin 26 to the adsorbent. After absorbing heat, the temperature of the adsorbent rises. Under the vacuum state, the boiling point of water is low, and the adsorbent desorbs water vapor. The water vapor enters the condenser 6 through the first connecting valve 16, meets the cold on the inner wall of the finned tube, condenses into water, and the heat is taken away by the cold air flowing outside the finned tube. The water droplets fall into the lower vacuum chamber 8 below the condenser 6 for storage.

[0039] During the desorption process of adsorption bed group 1 4, the air inlet valve 11 of adsorption bed 2 and the air outlet valve 13 of adsorption bed 2 are opened, the adsorption bed fan 9 is turned on, and air enters adsorption bed group 2 5, and the silica gel particle adsorbent adsorbs water vapor in the air.

[0040] Adsorption bed group 1 4 adsorbs, and adsorption bed group 2 5 desorbs:

[0041] The air inlet valve 11 of adsorption bed 2 and the air outlet valve 13 of adsorption bed 2 are closed, the first communication valve 16 and the second communication valve 17 are closed, the vacuum valve 15 of adsorption bed 2 is opened to evacuate adsorption bed group 2 5. After reaching the set time, the vacuum valve 15 of adsorption bed 2 is closed, the second communication valve 17 is opened, and the electric three-way ball valve 3 switches its position. The liquid heated in the solar collector enters the heat exchange tube 27 of the internal surface cooler 19 of adsorption bed group 2 5 through the total hot water inlet pipe, the adsorption bed hot water inlet pipe 21 and the surface cooler inlet pipe 29. The heat is conducted to the adsorbent through the tube wall and fins 26 of the heat exchange tube 27. The temperature of the adsorbent after absorbing heat rises. Under the vacuum state, the boiling point of water is low, and the adsorbent desorbs water vapor. The water vapor enters the condenser 6 through the second communication valve 17, cools down when encountering the cold on the inner wall of the finned tube, condenses into water, and the heat is carried away by the cold air flowing outside the finned tube. The water droplets fall into the lower vacuum chamber 8 below the condenser 6 for storage.

[0042] During the desorption process of adsorption bed group 2 5, the air inlet valve 10 of adsorption bed 1 and the air outlet valve 12 of adsorption bed 1 are opened, the adsorption bed fan 9 is turned on, and air enters adsorption bed group 1 4, and the silica gel particle adsorbent adsorbs water vapor in the air.

[0043] In summary, the present invention provides an adsorption air water intake device driven by a low-grade heat source, which includes a solar collector and a water intake unit. The solar collector can use solar energy as a heat source to heat the liquid, reducing energy consumption. The water intake unit includes an adsorption bed group one, an adsorption bed group two, a vacuum pumping device, a blowing device, and a water vapor condensation and collection unit. Both the adsorption bed group one and the adsorption bed group two include a number of surface coolers. The setting of the two adsorption bed groups enables one adsorption bed group to perform adsorption work while the other adsorption bed group performs desorption work, improving the continuity of producing liquid water. The surface cooler includes a number of fins and heat exchange tubes. The heat exchange tubes wind through the fins, and the gaps between the fins are used as the adsorbent filling area to fill the adsorbent. The setting of the fins can increase the heat conduction area, facilitating heat exchange between the heat exchange tubes and the adsorbent and enhancing the heat conduction efficiency. The heat exchange tubes are connectable to the solar collector in a switchable manner, and hot water circulates between the heat exchange tubes and the solar collector. The solar collector can provide a continuous supply of hot water to the heat exchange tubes during the desorption process, which is beneficial to ensuring the continuous progress of the desorption work. When performing adsorption work, the solar collector does not provide hot water to the heat exchange tubes, which is beneficial to preventing the water vapor adsorbed by the adsorbent from evaporating again during the adsorption process. The vacuum pumping device is connectable to the adsorbent filling area in a switchable manner. The vacuum pumping device is used to evacuate the adsorbent filling area. The setting of the vacuum pumping device can reduce the boiling point of the water attached to the adsorbent, which is beneficial to enabling the water attached to the adsorbent to desorb and evaporate water vapor at a lower temperature. The blowing device is connectable to the adsorbent filling area in a switchable manner. The blowing device is used to introduce external air into the adsorbent filling area. The setting of the blowing device can accelerate the air flow, enabling a large amount of external humid air to pass through the adsorbent filling area in a short time, which is beneficial to shortening the time required for the adsorption work. The water vapor condensation and collection unit is connectable to the adsorbent filling area in a switchable manner. The water vapor condensation and collection unit is used to condense and collect the water vapor desorbed by the adsorbent. The water vapor condensation and collection unit can condense the water vapor generated during the desorption process and collect and store the condensed water at the same time.

[0044] Of course, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. An adsorption air water intake device driven by a low-grade heat source, characterized in that, It includes a solar collector and a water intake unit. The water intake unit includes an adsorption bed group one, an adsorption bed group two, a vacuum pumping device, a blowing device, and a water vapor condensation and collection unit. Both the adsorption bed group one and the adsorption bed group two include a number of surface coolers and adsorbents. The surface cooler includes a number of fins and heat exchange tubes. The heat exchange tubes wind through the fins. The gaps between the fins serve as the adsorbent filling areas to fill the adsorbents. The heat exchange tubes are connectable and disconnectable to the solar collector, and a liquid circulation is carried out between the heat exchange tubes and the solar collector. The vacuum pumping device is connectable and disconnectable to the adsorbent filling area. The vacuum pumping device is used to pump vacuum for the adsorbent filling area. The blowing device is connectable and disconnectable to the adsorbent filling area. The blowing device is used to introduce external air into the adsorbent filling area. The water vapor condensation and collection unit is connectable and disconnectable to the adsorbent filling area. The water vapor condensation and collection unit is used to condense and collect the water vapor desorbed by the adsorbent.

2. The adsorption air water intake device driven by a low-grade heat source according to claim 1, wherein Both the adsorption bed group one and the adsorption bed group two are provided with detachable maintenance plates. Both the adsorption bed group one and the adsorption bed group two include surface cooler supports, adsorption bed bases, waterway connectors, adsorption bed hot water outlet pipes, and adsorption bed hot water inlet pipes. The surface coolers are all located above the adsorption bed bases. The adsorption bed bases provide support for the lowermost surface coolers. The surface coolers are spaced from the surface cooler supports. The surface cooler supports respectively provide support for the adjacent upper surface coolers. The adsorption bed hot water outlet pipes are connected to the surface cooler outlet pipes through detachable waterway connectors. The adsorption bed hot water inlet pipes are connected to the surface cooler inlet pipes through detachable waterway connectors. Both ends of the heat exchange tubes are respectively connected to the surface cooler inlet pipes and the surface cooler outlet pipes. The adsorption bed hot water inlet pipes and the adsorption bed hot water outlet pipes are both connected to the solar collector.

3. The adsorption air water intake device driven by low-grade heat source according to claim 2, characterized in that, The solar collector includes a vacuum heat pipe type solar collector. The vacuum heat pipe type solar collector is connected to the total hot water inlet pipe. A circulation pump is provided on the total hot water inlet pipe. The total hot water inlet pipe is connected to an electric three-way ball valve. The other two ends of the electric three-way ball valve are respectively connected to two adsorption bed hot water inlet pipes. The adsorption bed hot water outlet pipes are all connected to the total hot water outlet pipe. The total hot water outlet pipe is connected to the vacuum heat pipe type solar collector.

4. The adsorption air water intake device driven by a low-grade heat source according to claim 1, wherein The vacuum pumping device includes a vacuum pump, an adsorption bed one vacuum valve, and an adsorption bed two vacuum valve. The adsorbent filling area of the adsorption bed group one is connected to the adsorption bed one vacuum valve, and the adsorption bed one vacuum valve is connected to the vacuum pump. The adsorbent filling area of the adsorption bed group two is connected to the adsorption bed two vacuum valve, and the adsorption bed two vacuum valve is connected to the vacuum pump.

5. The adsorptive air water intake device driven by low-grade heat source according to claim 1, characterized in that, The blowing device includes an adsorption bed fan, an inlet air valve for adsorption bed 1, an inlet air valve for adsorption bed 2, an outlet air valve for adsorption bed 1, and an outlet air valve for adsorption bed 2. The adsorbent filling area of adsorption bed group 1 is connected to the inlet air valve for adsorption bed 1, and the inlet air valve for adsorption bed 1 is connected to the adsorption bed fan; the adsorbent filling area of adsorption bed group 2 is connected to the inlet air valve for adsorption bed 2, and the inlet air valve for adsorption bed 2 is connected to the adsorption bed fan; an outlet air valve for adsorption bed 1 is provided in adsorption bed group 1, and the outlet air valve for adsorption bed 1 is used to discharge the outside air after the water vapor in the air is adsorbed by the adsorbent; an outlet air valve for adsorption bed 2 is provided in adsorption bed group 2, and the outlet air valve for adsorption bed 2 is used to discharge the outside air after the water vapor in the air is adsorbed by the adsorbent.

6. The adsorptive air water intake device driven by a low-grade heat source according to claim 1, wherein The water vapor condensation and collection unit includes a condenser, a condenser fan, an upper vacuum chamber, a lower vacuum chamber, a connecting valve 1, and a connecting valve 2. The condenser fan is used for the heat dissipation of the condenser; the condenser includes finned tubes, the upper vacuum chamber is connected to the lower vacuum chamber through the finned tubes, and the lower vacuum chamber is used to store condensed water; the upper vacuum chamber is connected to the connecting valve 1, and the connecting valve 1 is connected to the adsorbent filling area of adsorption bed group 1; the upper vacuum chamber is connected to the connecting valve 2, and the connecting valve 2 is connected to the adsorbent filling area of adsorption bed group 2; a water intake valve is provided in the lower vacuum chamber.

7. The adsorptive air water intake device driven by a low-grade heat source according to claim 1, wherein The surface cooler is detachably connected to a breathable cover plate for preventing the adsorbent from falling off.

8. The adsorption air water intake device driven by a low-grade heat source according to any one of claims 1 to 7, characterized in that, The solar collector is connected to the heater; the heater is connected to the storage battery; the storage battery is connected to the solar panel; the storage battery is used to provide the electric energy consumed during air water intake.

9. A method of using an adsorption air water intake device driven by a low-grade heat source, characterized in that, It includes the following steps: S1: The blowing device passes outside air into the adsorbent filling area of adsorption bed group 1, and the adsorbent adsorbs the water vapor in the air. While adsorption bed group 1 adsorbs water vapor, the desorption work of adsorption bed group 2 is carried out. The vacuum pumping device pumps the adsorbent filling area of adsorption bed group 2 to vacuum. After stopping the vacuum pumping, the solar collector passes high-temperature liquid into the heat exchange tubes of adsorption bed group 2, and the heat is conducted to the adsorbent through the tube wall and fins of the heat exchange tubes. The temperature of the adsorbent after absorbing heat rises above the boiling point of water, and the adsorbent in adsorption bed group 2 desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection. S2: The blowing device passes outside air into the adsorbent filling area of adsorption bed group 2, and the adsorbent adsorbs the water vapor in the air. While adsorption bed group 2 adsorbs water vapor, the desorption work of adsorption bed group 1 is carried out. The vacuum pumping device pumps the adsorbent filling area of adsorption bed group 1 to vacuum. After stopping the vacuum pumping, the solar collector passes high-temperature liquid into the heat exchange tubes of adsorption bed group 1, and the heat is conducted to the adsorbent through the tube wall and fins of the heat exchange tubes. The temperature of the adsorbent after absorbing heat rises above the boiling point of water, and the adsorbent in adsorption bed group 1 desorbs water vapor. The desorbed water vapor enters the water vapor condensation and collection unit for condensation and collection. S3: The working processes of S1 and S2 are cycled.

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