Continuous atmosphere water catcher based on solar energy

Abstract

The invention provides a continuous atmosphere water catcher based on solar energy. The continuous atmosphere water catcher comprises a shell, a pulley, a limiting baffle, an adsorbent material, a heat absorption plate, a heat insulation layer, a delay baffle and a condensation plate. In the solar atmosphere water catcher, the two adsorbent materials replace water absorption and dehydration, so that continuous and uninterrupted water production is realized. The device is divided into an adsorption area and a desorption area through a pulley device by utilizing the weight difference of two adsorbents in different water absorption stages, so that the automatic operation of the adsorption device is realized. Air in the adsorption area flows in at a certain speed, and part of water vapor in the air is captured by the adsorbent. And meanwhile, the heat absorbing plate absorbs light energy of concentrated solar energy and converts the light energy into heat energy for heating the adsorbent material in the desorption area cavity, water vapor is desorbed from the adsorbent material, the delay baffle is opened after adsorption / desorption is conducted for a certain time, and the adsorption and desorption states of the adsorbent material are switched through gravity. The desorbed water vapor moves to the condensation area and is condensed into liquid water, and the liquid water flows out from an outlet.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar thermal utilization, and specifically relates to a continuous atmospheric water capture device based on solar energy, which captures water vapor in the atmosphere through an adsorption material, converts solar energy into thermal energy to promote water desorption and collects required liquid water. In particular, it relates to a continuous atmospheric water capture device based on solar energy. Background Art

[0002] Fresh water is an indispensable part of human production and life, but the increasing demand, environmental pollution and uneven distribution of water resources have made the problem more serious. The desalination method relies on seawater using heat or membrane processes, which consumes a lot of energy, and the collection based on fog and dew has high requirements for environmental humidity. Therefore, adsorption atmospheric water capture has become a key solution to the fresh water problem because of its applicability to various humidity levels, portability and environmental friendliness.

[0003] Adsorption-based atmospheric water capture captures water vapor in the atmosphere through adsorbent materials with water affinity, and can work under low humidity or extreme climate conditions. During the desorption process, low-grade thermal energy can be used to drive the release of water vapor, and the water vapor eventually condenses to form droplets, thus completing the adsorption-desorption cycle. The traditional control method uses the temperature difference between day and night and the high humidity at night to adopt an intermittent water capture strategy with a single daily cycle. Its water productivity is severely limited, so atmospheric water capture is developing towards multi-cycle continuous water capture. Summary of the invention

[0004] The present invention proposes a continuous atmospheric water capture device based on solar energy to achieve the function of continuous water production. By dividing the water collector into zones and using a pulley structure to switch the adsorption-desorption mode of the adsorbent using gravity, the water collector can absorb and produce water at the same time, which has the characteristics of environmental protection, low energy consumption, simple control structure and high water production rate.

[0005] The technical solution adopted by the present invention is as follows: a continuous atmospheric water trap based on solar energy, the continuous atmospheric water trap comprising a pulley, a limit baffle, a delay baffle, a heat absorbing plate, a shell, a heat insulating layer, a condensation plate, a water outlet, and an adsorbent material; The continuous atmospheric water trap is divided into an adsorption zone, a desorption zone and a condensation zone from top to bottom; the adsorption zone is located at the top of the water trap, the pulley is fixed in the middle of the top, and the left and right adsorbent materials are connected and suspended on the pulley. The adsorbent material can move vertically by rotating the pulley, and a limit baffle is used under the pulley to limit the position; The desorption zone is composed of a time-delay baffle, a heat-absorbing plate, a shell and a heat-insulating layer, which are used to heat the adsorbent material, promote water desorption, and form high-temperature steam. The square shell surrounds the cavity, and the heat-insulating layer is wrapped around the outside of the shell. Openings are set on the sides of the shell and the heat-insulating layer. Heat-absorbing plates are placed at the openings to absorb solar energy and convert it into heat energy. Two openings are set at the top of the shell between the adsorption zone and the desorption zone, respectively corresponding to the vertical projection positions of the two pieces of the adsorbent material, so that the adsorbent material can pass through when falling vertically. The time-delay baffle is located at the two openings to maintain the adsorption / desorption state of the adsorbent material. The condensation zone is composed of a condensation plate and a water outlet, and is connected to the lower part of the desorption zone. The condensation plate is an inclined plane, and the water outlet is arranged at the bottom to collect the produced liquid water.

[0006] The beneficial effects brought by the present invention are: The present invention utilizes solar energy to capture water, which can not only achieve the purpose of continuous water production, but also has the characteristics of environmental protection, low energy consumption, simple control structure, and high water production rate. The adsorption material captures moisture in the atmosphere, and after the adsorption stage is completed, it falls into the desorption chamber by gravity. At the same time, solar energy heating is used to promote the desorption of water. The water vapor is cooled in the condensation area and condenses into droplets and slides down, thereby completing the capture and collection of water. By monitoring the ambient temperature and humidity, the present invention can flexibly control the adsorption-desorption cycle, thereby accelerating the water production rate and achieving high-efficiency continuous multi-cycle water capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural diagram of the continuous atmospheric water collector based on solar energy of the present invention.

[0008] In the figure, the reference numerals are: adsorption zone 1, desorption zone 2, condensation zone 3, adsorbent material 4, pulley 11, limit baffle 12, delay baffle 21, heat absorption plate 22, shell 23, insulation layer 24, condensation plate 31, water outlet 32. DETAILED DESCRIPTION

[0009] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned purpose, the present invention adopts the following technical scheme.

[0010] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0011] See also Figure 1 The continuous atmospheric water trap based on solar energy of the present invention comprises a pulley 11, a limit baffle 12, a delay baffle 21, a heat absorbing plate 22, a shell 23, a heat insulating layer 24, a condensation plate 31, a water outlet 32, and an adsorbent material 4. The continuous atmospheric water trap is divided into an adsorption zone 1, a desorption zone 2, and a condensation zone 3 from top to bottom, wherein the adsorption zone 1 is located at the top, the desorption zone 2 is located in the middle, and the condensation zone 3 is located at the bottom. A pulley 11 is fixed in the center of the top of the adsorption zone 1, and two pieces of the adsorbent material 4 are connected by ropes or belts and suspended on the pulley 11. The adsorbent material 4 can move vertically by rotating the pulley 11, and a limit baffle 12 is used to limit the position under the pulley. Two openings are provided at the top of the shell 23, between the adsorption zone 1 and the desorption zone 2, corresponding to the vertical projection positions of the two pieces of the adsorbent material 4, so that the adsorbent material 4 can pass through when falling vertically. The delay baffle 21 is located at the two openings to maintain the adsorption / desorption state of the adsorbent material 4. The desorption zone 2 is used to heat the adsorbent material 4, promote water desorption, and form high-temperature steam. The shell 23 surrounds to form a square cavity, and the heat insulation layer 24 is wrapped outside the shell 23. Openings are provided on the sides of the shell 23 and the heat insulation layer 24. The heat absorption plate 22 is placed at the opening to absorb solar energy and convert it into heat energy to heat the adsorbent material 4 in the desorption zone 2. The condensation zone 3 is provided at the bottom of the continuous atmospheric water trap. The condensation zone 3 is composed of a condensation plate 31 and a water outlet 32, which is connected to the lower part of the desorption zone 2. The condensation plate 31 is an inclined plane, and the lower part of the condensation plate 31 is connected to the water outlet 32 ​​for collecting the produced liquid water.

[0012] Preferably, the adsorbent material 4 is composed of materials such as MOF, hydrogel, hygroscopic salt, COF, or a hygroscopic composite material composed of porous materials and salts such as LiCl, CaCl2, etc., which can have water absorption capacity and considerable water absorption at low relative humidity, and has good adsorption-desorption kinetics.

[0013] Preferably, when hygroscopic salt is used as the adsorbent material 4, it can be wrapped with a porous film material such as polytetrafluoroethylene to prevent the salt from dissolving and leaking.

[0014] Preferably, the desorption zone 2 is wrapped by a heat insulation layer 24 to prevent heat loss in the desorption zone 2 of the water trap and improve the thermal efficiency of the device.

[0015] Preferably, the limiting baffle 12 is provided below the pulley 11 to fix the adsorbent material 4 at a specific height to prevent it from falling off and deviating in height.

[0016] Preferably, the delay baffle 21 is provided at the opening between the adsorption zone 1 and the desorption zone 2. When the adsorbent material 4 absorbs water and becomes heavy and falls down, the delay baffle 21 is closed to prevent the adsorbent material 4 from being lifted up when desorption is insufficient. It is opened after a period of time to allow the adsorbent material 4 to undergo the next round of adsorption-desorption cycle.

[0017] Preferably, a hygrometer is provided in the adsorption zone 1 , and a temperature detection device is provided in the desorption zone 2 .

[0018] Preferably, a weight detection device is arranged above the adsorbent material 4 .

[0019] Preferably, the adsorption zone 1 may be provided with a plurality of groups of pulleys 11 placed in parallel to suspend the adsorbent material 4 in different adsorption-desorption cycle states, and a plurality of groups of delay baffles 21 may be provided corresponding to the desorption zone 2 to enhance the continuous water production performance of the atmospheric water collector.

[0020] Preferably, the closing time of the delay baffle 21 is controlled according to the data collected by the temperature and humidity detection device, or the weight of the adsorbent material 4, that is, the adsorption-desorption cycle of the continuous atmospheric water collector is controlled. The adsorption time-relative humidity and desorption time-desorption chamber temperature curves are fitted in advance through experimental results, and the adsorption-desorption cycle of the corresponding baffle is adjusted according to the data collected by the temperature and humidity detection device; or the desorption is judged based on the mass data collected by the weight detection device above the adsorbent in the desorption zone 2 to determine whether the desorption is completed. If the weight is lower than a certain value, it means that the desorption stage is completed, the delay baffle 21 is opened, and the adsorbent material 4 located above falls, driving another adsorbent in the same group to rise to the adsorption zone, and the delay baffle 21 is closed to enter the next adsorption / desorption stage.

[0021] Preferably, the housing 23 is made of aluminum.

[0022] Preferably, the condensation zone 3 may adopt a fin structure to enhance heat dissipation and maintain a temperature difference between the desorption zone 2 and the condensation zone 3 .

[0023] It should be noted that, according to the above-mentioned embodiments of the present invention, those skilled in the art can fully implement the full scope of the independent claims and dependent rights of the present invention, and the implementation process and method are the same as the above-mentioned embodiments; and the parts not elaborated in detail in the present invention belong to the well-known technology in the field.

[0024] The above descriptions are only some specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A continuous atmospheric water trap based on solar energy, characterized in that: The continuous atmospheric water trap comprises a pulley (11), a limit baffle (12), a delay baffle (21), a heat absorbing plate (22), a shell (23), a heat insulating layer (24), a condensation plate (31), a water outlet (32), and an adsorbent material (4); The continuous atmospheric water trap is divided into an adsorption zone (1), a desorption zone (2) and a condensation zone (3) from top to bottom; the adsorption zone (1) is located at the top of the water trap, the pulley (11) is fixed in the center of the top, and the left and right adsorbent materials (4) are connected and suspended on the pulley (11); the adsorbent material (4) can be vertically moved by the rotation of the pulley (11), and a limit baffle (12) is used below the pulley (11) to limit the position; The desorption zone (2) is composed of a time-delay baffle (21), a heat-absorbing plate (22), an outer shell (23) and a heat-insulating layer (24), and is used to heat the adsorbent material (4), promote water desorption, and form high-temperature steam. The square outer shell (23) surrounds and forms a cavity. The heat-insulating layer (24) is wrapped around the outer shell (23). Openings are provided on the sides of the outer shell (23) and the heat-insulating layer (24). The heat-absorbing plate (22) is placed at the opening to absorb solar energy and convert it into heat energy. Two openings are provided at the top of the outer shell (23) between the adsorption zone (1) and the desorption zone (2), respectively corresponding to the vertical projection positions of the two pieces of the adsorbent material (4), so that the adsorbent material (4) can pass through when falling vertically. The time-delay baffle (21) is located at the two openings, and is used to maintain the adsorption / desorption state of the adsorbent material (4); The condensation zone (3) is composed of a condensation plate (31) and a water outlet (32), and is connected to the lower part of the desorption zone (2). The condensation plate (31) is an inclined plane, and the water outlet (32) is arranged at the bottom to collect the produced liquid water.

2. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The adsorbent material (4) is composed of MOF, hydrogel, hygroscopic salt, COF, POP, HOF or a hygroscopic composite material composed of a porous material and salt, has water absorption capacity and considerable water absorption amount at low relative humidity, and has good adsorption-desorption kinetics.

3. The continuous atmospheric water collector based on solar energy according to claim 2, characterized in that: When hygroscopic salt is used as the adsorbent material (4), it is wrapped with a porous film material to prevent the salt from dissolving and leaking.

4. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The desorption zone (2) is wrapped by a heat insulation layer (24), thereby preventing heat loss in the desorption zone (2) and improving the thermal efficiency of the device.

5. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The limiting baffle (12) is arranged below the pulley (11) and is used to fix the adsorbent material (4) at a specific height to prevent it from falling off and deviating in height.

6. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The delay baffle (21) is arranged at the opening between the adsorption zone (1) and the desorption zone (2). When the adsorbent material (4) absorbs water and becomes heavy and falls down, the delay baffle is closed to prevent the adsorbent from being lifted up when desorption is insufficient. After a period of time, it is opened to allow the adsorbent material (4) to undergo the next round of adsorption-desorption cycle.

7. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: A hygrometer is provided in the adsorption zone (1), and a temperature detection device is provided in the desorption zone (2).

8. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: A weight detection device is arranged above the adsorbent material (4).

9. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The adsorption zone (1) is provided with a plurality of groups of pulleys (11) placed in parallel to suspend the adsorbent material (4), and a plurality of groups of delay baffles (21) are provided in correspondence with the desorption zone (2) to enhance the continuous water production performance of the atmospheric water trap.

10. The continuous atmospheric water capture device based on solar energy according to claim 7, characterized in that: According to the data collected by the temperature and humidity detection device, or the weight of the adsorbent material (4), the closing and opening time of the delay damper (21) is controlled, that is, the adsorption-desorption cycle of the continuous atmospheric water trap is controlled.

11. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The housing (23) is made of aluminum.

12. The continuous atmospheric water capture device based on solar energy according to claim 1, characterized in that: The condensation plate (31) adopts a fin structure to enhance heat dissipation and maintain the temperature difference between the desorption zone (2) and the condensation zone (3).

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