Device for taking water from air

Abstract

The utility model relates to the technical field of air water taking, in particular to an air water taking device which comprises an adsorption mechanism, a compression refrigeration mechanism and a water storage mechanism, the adsorption mechanism comprises an adsorption box and an adsorption bed, a first air inlet hole is formed in the bottom of the adsorption box, and a first exhaust hole and a second exhaust hole are formed in the upper end of the adsorption box; a first valve and a second valve are correspondingly mounted on the first exhaust hole and the second exhaust hole respectively; the adsorption box is provided with an air guide cylinder at the second exhaust hole, the air guide cylinder is provided with a second air inlet hole, the second air inlet hole is provided with an air blocking piece, and an air inlet fan is arranged above the air blocking piece; the compression refrigeration mechanism comprises an evaporator, a compressor, a condenser and a throttling valve, the evaporator is installed in the air guide cylinder, the water storage mechanism comprises a water storage tank, and the water storage tank is provided with an air outlet. The air water taking device can operate a water taking working mode fitting the environment according to different temperature and humidity environments so as to achieve the effects of saving energy to the maximum extent, shortening the water taking period and increasing the water taking amount.

Description

Technical Field

[0001] This utility model relates to the field of air water extraction technology, and in particular to an air water extraction device. Background Technology

[0002] In areas lacking freshwater supply, such as oceans, deserts, or regions with scarce water resources, solving the freshwater supply problem is crucial. Based on the three states of water on Earth—gas, liquid, and solid—and the law of conservation of water mass, the Earth's atmosphere acts as an intermediate link in this cycle, serving as a vast water reservoir and a source of freshwater. Atmospheric water resources, as an unconventional water resource, are characterized by rapid renewal, large dynamic reserves, and ease of on-site utilization. This makes atmospheric water extraction technology a feasible method for addressing water scarcity in arid regions.

[0003] Currently, existing air-to-water extraction devices can be broadly divided into two types. One is direct-cooling air-to-water extraction, such as the one mentioned in patent CN201721455303.8, which uses a compressor condenser in conjunction with a fan to directly condense and liquefy the moisture in the air to achieve the effect of water extraction. This method is highly dependent on the ambient humidity and temperature; the water extraction effect is poor and the cycle is long in low-temperature and low-humidity environments. The other type is adsorption-based air-to-water extraction, such as the one mentioned in patent CN202110742697.X, which uses activated carbon and a hygroscopic salt composite as adsorbents to absorb and store water molecules in the air. After high-temperature desorption, the humid and hot air is transferred to a condenser for liquefaction to achieve the purpose of water extraction. This method has high requirements for the hygroscopic and desorption performance of the adsorbent. However, adsorbents such as zeolite require high desorption temperatures, and the adsorption capacity is relatively low at low humidity, so it cannot achieve the effect of high water extraction in extreme low-temperature and low-humidity environments. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an air water collection device to at least solve the problems of poor water collection effect and long cycle in existing air water collection devices under low temperature and low humidity conditions.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] The air-water extraction device of this utility model includes an adsorption mechanism, a compression and refrigeration mechanism, and a water storage mechanism. The adsorption mechanism includes an adsorption box and an adsorption bed installed inside the adsorption box. The adsorption bed is lined with water-absorbing material. The bottom of the adsorption box has a first air inlet hole, and the upper end of the adsorption box has a first exhaust hole and a second exhaust hole. A first valve is installed on the first exhaust hole, and a second valve is installed on the second exhaust hole.

[0007] The adsorption box is equipped with a guide tube at the second exhaust port. The top of the guide tube has a second air inlet. A baffle plate is installed at the second air inlet. An intake fan is installed above the baffle plate at the second air inlet. The compression refrigeration mechanism includes an evaporator, a compressor, a condenser, and a throttling valve connected in sequence. The refrigerant inlet of the evaporator is connected to the refrigerant outlet of the throttling valve. The evaporator is installed at the end of the guide tube away from the adsorption box. The water storage mechanism includes a water tank. The water tank is installed below the evaporator and communicates with the guide tube. The water tank has an air outlet.

[0008] In some embodiments, a centrifugal fan is installed at the top inner part of the adsorption box.

[0009] In some embodiments, a baffle plate is installed inside the adsorption box above the adsorption bed, and the centrifugal fan is installed above the baffle plate.

[0010] In some embodiments, an air heater is fixedly installed at the location of the first air inlet.

[0011] In some embodiments, a connecting pipe is connected between the air guide tube and the water storage tank, and both the outlet of the air guide tube and the inlet of the water storage tank are covered with silicone sleeves.

[0012] In some embodiments, the air guide tube has a sloping bottom below the evaporator, and the connecting pipe is installed at the lowest position of the sloping bottom.

[0013] In some embodiments, a GORE-TEX membrane is installed on the air outlet of the water storage tank.

[0014] In some embodiments, a cooling fan is installed on the outside of the condenser.

[0015] In some embodiments, the air-water collection device further includes a solar power generation mechanism connected to a storage battery that supplies power to the air-water collection device.

[0016] This utility model's air-to-water device, by controlling the first valve, the second valve, and the intake fan, can adjust the position of external air entering and the airflow entering and exiting the internal airflow of the air-to-water device. This allows for switching between three water intake modes: direct cooling, adsorption, and a combination of direct cooling and adsorption. This enables the device to operate in a water intake mode that suits different temperature and humidity environments, thereby maximizing energy savings, shortening the water intake cycle, and increasing the water intake volume. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the air-water extraction device of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the air-water extraction device of this utility model. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the air-to-water intake device;

[0020] The components include an adsorption box 110, an adsorption bed 120, a first air inlet 130, a first exhaust outlet 140, a second exhaust outlet 150, an air heater 160, a centrifugal fan 170, and a baffle plate 180.

[0021] First valve 210, second valve 220

[0022] Air guide 300, second air inlet 310, air baffle 320, intake fan 330, connecting pipe 340, guide slope 350, evaporator 410, compressor 420, condenser 430.

[0023] Water storage tank 510, air outlet 511, water pump 520, cooling fan 600, storage battery 710, solar panel 720. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0025] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0026] Please refer to Figures 1-3 :

[0027] An air-to-water collection device includes an adsorption mechanism, a compression and refrigeration mechanism, and a water storage mechanism. The adsorption mechanism includes an adsorption box 110 and an adsorption bed 120 installed inside the adsorption box 110. The adsorption bed 120 is lined with water-absorbing material. The bottom of the adsorption box 110 has a first air inlet 130, and the upper end of the adsorption box 110 has a first exhaust port 140 and a second exhaust port 150. A first valve 210 is installed on the first exhaust port 140, and a second valve 220 is installed on the opening of the second exhaust port 150. An air guide tube 300 is installed on the adsorption box 110 at the second exhaust port 150, and the top of the air guide tube 300 has a second air inlet 31. 0. A baffle plate 320 is installed on the second air inlet 310, and an intake fan 330 is installed above the baffle plate 320. The compression refrigeration mechanism includes an evaporator 410, a compressor 420, a condenser 430 and a throttle valve connected in sequence. The refrigerant inlet end of the evaporator 410 is connected to the refrigerant outlet end of the throttle valve. The evaporator 410 is located inside the air guide cylinder 300 and installed at the end of the air guide cylinder 300 away from the adsorption box 110. The water storage mechanism includes a water storage tank 510. The water storage tank 510 is installed below the evaporator 410 and communicates with the air guide cylinder 300. The water storage tank 510 has an air outlet 511.

[0028] The outer wall of the adsorption box 110 is wrapped with heat insulation cotton. An air heater 160 is fixedly installed in the first air inlet 130 of the adsorption box 110 with screws. Its function is to rapidly increase the temperature of the air entering the adsorption box 110 from the air inlet during the desorption stage, thereby raising the temperature of the entire adsorption box 110 in a short time to achieve the purpose of desorption. Twenty-one adsorption plates with a size of 354*394*10mm are installed in the adsorption box 110. The 21 adsorption plates form an adsorption bed 120. The bottom of the adsorption plates is a 10-mesh 316L metal mesh. The mesh structure of the metal mesh can ensure the permeability of air circulation during the adsorption stage, and the 316L material ensures that the adsorption bed 120 is not corroded by the moisture-absorbing material. The adsorption plate contains a single layer of 8mm diameter spherical MOF (Metal-Organic Framework) highly hygroscopic material. MOFs possess exceptionally high surface area and adjustability, along with rich chemical variability, resulting in excellent atmospheric water capture capacity and low regeneration energy consumption under low relative humidity. This air-water extraction device, using MOFs as the built-in adsorbent, can actively adsorb and retain atmospheric moisture under arid extreme conditions such as deserts and border regions. Combined with the device's efficient desorption and condensation functions, the water extraction cycle can be significantly shortened. The single-layer flat arrangement ensures air permeability and uniformity, while the spherical shape provides the largest contact area with air compared to other shapes. The guide rails fixed to the inner walls of the adsorption bed 120 and adsorption box 110 form a drawer-like structure for placing and removing the adsorption plate, facilitating the replacement of the hygroscopic material that has reached the end of its service life.

[0029] A centrifugal fan 170 is installed at the top inside the adsorption box 110. A baffle plate 180 is installed inside the adsorption box 110 above the adsorption bed 120. The centrifugal fan 170 is installed above the baffle plate 180, with the air inlet of the centrifugal fan 170 and the air outlet of the baffle plate 180 concentrically aligned but not in contact. When the centrifugal fan 170 is working, it creates a negative pressure inside the adsorption box 110, causing air to continuously enter the adsorption box 110 through the first air inlet 130. The advantage of the centrifugal fan 170 is its ability to provide high-pressure airflow, making it very suitable for structures with high wind resistance formed by multi-layer adsorption beds 120.

[0030] The air guide cylinder 300 is made of aluminum alloy and is trumpet-shaped. The radial dimension of the end of the air guide cylinder 300 closer to the adsorption box 110 is smaller, and the radial dimension of the end of the air guide cylinder 300 further away from the adsorption box 110 is larger. The trumpet-shaped design of the air guide cylinder 300 is to better allow the high-temperature and high-humidity gas to fully contact the fins of the evaporator 410. The second air inlet 310 is located on the top wall of the air guide cylinder 300 between the second valve 220 and the evaporator 410. A baffle plate 320 made of TPU is installed at the position of the second air inlet 310. An intake fan 330 is installed above the baffle plate 320, preferably two intake fans 330. The design of the baffle plate 320 and the intake fan 330 at the second air inlet 310 can prevent the gas inside the air guide tube 300 from overflowing. The baffle plate 320 and the intake fan 330 can form an intake one-way valve, allowing air to enter but preventing the gas inside from overflowing.

[0031] The outlet of the air guide cylinder 300 is connected to the inlet of the water storage tank 510 so that condensate can enter the water storage tank 510. Specifically, a connecting pipe 340 connects the air guide cylinder 300 and the water storage tank 510, and both the outlet of the air guide cylinder 300 and the inlet of the water storage tank 510 are sealed with silicone sleeves. The water storage tank 510 is installed below the air guide cylinder 300, and the condensate in the air guide cylinder 300 flows directly into the water storage tank 510 by gravity. To ensure that the condensate in the air guide cylinder 300 flows into the water storage tank 510 as completely as possible, the air guide cylinder 300 has a guide slope 350 below the evaporator 410, and the connecting pipe 340 is installed at the lowest position of the guide slope 350.

[0032] The water storage tank 510 receives liquefied condensate and low-temperature dry air. Air outlets 511 are designed on both sides of the water storage tank 510, located near the top. The air outlets 511 are covered with a GORE-TEX membrane. Condensate drips into the water storage tank 510 under gravity, while low-temperature dry air overflows from the air outlets 511 under pressure. The GORE-TEX membrane prevents liquefied water from flowing out of the air outlets 511 when the device is tilted. A water pump 520 is installed above the water storage tank 510. When the water level in the water storage tank 510 reaches a certain height, the water pump 520 is activated to pump water from the inlet to the outside for use.

[0033] A cooling fan 600 is installed on the outside of the condenser 430, preferably four cooling fans, to dissipate heat from the fins of the condenser 430.

[0034] In some embodiments, the air-to-water collection device further includes a solar power generation mechanism connected to a storage battery 710, which supplies power to the air-to-water collection device. The solar power generation mechanism uses conventional solar power components, with its solar panels 720 fixedly mounted on top of the adsorption box 110. Under the action of the solar power generation mechanism, solar energy can be converted into electrical energy and stored in the storage battery.

[0035] The aforementioned air-water extraction device utilizes the refrigerant circulating through the compressor 420-condenser 430-throttle valve-evaporator 410-compressor 420, which lowers the surface temperature of the evaporator 410. Moist air is then delivered to the evaporator 410, where water molecules in the air encounter the relatively cool surface of the evaporator 410, and some water molecules condense into water droplets on the aluminum fins of the evaporator 410.

[0036] The above-mentioned air-to-water intake device operates in three modes: direct cooling, adsorption, and a combination of direct cooling and adsorption, as detailed below:

[0037] (1) Adsorption-type water intake mode

[0038] The adsorption-based water intake mode consists of three stages: the adsorption stage, the desorption stage, and the condensation and liquefaction stage.

[0039] Adsorption stage: Turn on the adsorption centrifugal fan 170 and set the speed to 2600 r / min. At the same time, open the first valve 210 to ventilate the first exhaust port 140 and close the second valve 220 to close the second exhaust port 150. The blades of the centrifugal fan 170 rotate to generate suction, drawing in outside air through the first air inlet 130. The air entering the adsorption chamber 110 is fully dried by contacting the highly hygroscopic MOFs material through the adsorption bed 120. The dried air is then discharged from the first exhaust port 140 under the action of the top centrifugal fan 170, completing the adsorption process. This process generally lasts for 3-4 hours.

[0040] Desorption stage: Close the first valve 210 and open the second valve 220. Turn on the air heater 160 to heat the air entering the adsorption box 110 so that the internal temperature of the adsorption box 110 reaches 100℃ and stabilizes to meet the desorption temperature requirements of the hygroscopic material. Run the compression refrigeration mechanism to generate low temperature on the fins of the evaporator 410. At the same time, adjust the speed of the centrifugal fan 170 to 1500r / min. At this time, the moisture in the hygroscopic material is desorbed to form high temperature and high humidity gas. This stage lasts for 1 hour.

[0041] Condensation stage: High-temperature and high-humidity gas enters the air guide tube 300 under the action of centrifugal fan 170. The funnel-shaped air guide tube 300 allows the high-temperature and high-humidity gas to fully contact the fins of evaporator 410 for condensation and liquefaction. The purpose of reducing the speed of centrifugal fan 170 is to reduce the gas flow rate entering the air guide tube 300 and increase the contact time between the high-temperature and high-humidity gas and the fins so that it can fully condense and liquefy. The liquefied water and low-temperature dry air enter the water storage tank 510 through the guide slope bottom. The low-temperature dry air flows out from the air outlet 511 of the water storage tank 510 under air pressure, realizing gas-liquid separation.

[0042] (2) Direct cooling water intake mode

[0043] The direct cooling type directly sends outside air into the air guide cylinder 300 to liquefy it for water intake. The specific operation is as follows: close the second valve 220, turn on the intake fan 330, and run the compression refrigeration mechanism. Under the action of external wind pressure, part of the wind deflector 320 is blown open so that ambient air can enter the air guide cylinder 300 through the second air inlet 310. The subsequent condensation stage is the same as that of the adsorption type water intake mode to complete the water intake process.

[0044] (3) Direct cooling and adsorption combined water intake mode

[0045] The direct-cooling adsorption composite water intake mode involves simultaneous direct-cooling condensation and water intake during the adsorption phase. The specific process is as follows: In the first stage, centrifugal fan 170 is operated, first valve 210 is opened and second valve 220 is closed, while intake fan 330 is turned on and the compression refrigeration mechanism is activated. This allows the adsorption tank 110 to absorb and store moisture from the external air, while the air guide cylinder 300 directly condenses and liquefies the moisture in the external air. In the second stage, after 3-4 hours of adsorption, the first valve 210 is closed and second valve 220 is opened, intake fan 330 is turned off, and the same condensation process as the adsorption process begins.

[0046] When the ambient temperature and humidity are low, such as below 30℃ and 30%RH, the absolute humidity is less than or equal to 9.09 g / m³. 3The air is relatively dry, and this environment is mostly border or desert areas. The air water collection device will operate in an adsorption mode because direct cooling is very dependent on the ambient temperature and humidity. In low temperature and humidity environments, the water collection efficiency of direct cooling is poor, the cycle is long, and energy is wasted.

[0047] When the ambient temperature and humidity are moderate, such as 20℃-30℃, relative humidity 30%RH-70%RH, and absolute humidity 9.09g / m³, the humidity will be suitable. 3 -59.08g / m 3 The air temperature is moderate, and the air water intake device will operate in a direct cooling and adsorption composite working mode. Compared with a single adsorption method, it can shorten the water intake cycle, and compared with a single direct cooling method, it can save energy.

[0048] When the ambient temperature and humidity are high, such as above 30℃, relative humidity above 70%RH, and absolute temperature above 59.08g / m³, 3 The above can be considered as relatively humid air. This environment is mostly in island areas where freshwater resources are scarce. The air water collection device will operate in a direct cooling mode. In high humidity environments, the direct cooling mode also has a high water collection rate and can save energy for adsorption and desorption.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. An air-water taking device, characterized in that, The air water device comprises an adsorption mechanism, a compression refrigeration mechanism and a water storage mechanism, the adsorption mechanism comprises an adsorption box and an adsorption bed installed in the adsorption box, the adsorption bed is paved with water adsorption material, the bottom of the adsorption box is provided with a first air inlet, the upper end of the adsorption box is provided with a first air outlet and a second air outlet, the first air outlet is provided with a first valve, and the second air outlet is provided with a second valve. The adsorption box is provided with a gas guide cylinder at the second air outlet, the top of the gas guide cylinder is provided with a second air inlet, the second air inlet is provided with a wind baffle, and an air inlet fan is installed above the wind baffle; the compression refrigeration mechanism comprises an evaporator, a compressor, a condenser and a throttle valve connected in sequence, the refrigerant inlet end of the evaporator is connected with the refrigerant outlet end of the throttle valve, the evaporator is installed at the end of the gas guide cylinder away from the adsorption box, the water storage mechanism comprises a water storage tank, the water storage tank is installed below the evaporator and communicates with the gas guide cylinder, and the water storage tank is provided with an air outlet.

2. The air-to-water harness of claim 1, wherein, The inner top of the adsorption box is provided with a centrifugal fan.

3. The air-to-water harness of claim 2, wherein, The inner top of the adsorption box is provided with a centrifugal fan.

4. The air-to-water device of claim 1, wherein, The first air inlet is fixedly provided with an air heater.

5. The air-to-water harness of claim 4, wherein, The gas guide cylinder and the water storage tank are connected with a connecting pipe, and the outlet of the gas guide cylinder and the inlet of the water storage tank are covered with silica gel sleeves.

6. The air-to-water harness of claim 5, wherein, The gas guide cylinder is provided with a flow guide inclined bottom below the evaporator, and the connecting pipe is installed at the lowest position of the flow guide inclined bottom.

7. The air water device of claim 1, wherein, The air outlet of the water storage tank is provided with a GORE-TEX membrane.

8. The air water device of claim 1, wherein, The outer side of the condenser is provided with a heat dissipation fan.

9. The air-to-water harness of any of claims 1-8, wherein, The air water device further comprises a solar power generation mechanism, the solar power generation mechanism is connected with a storage battery, and the storage battery supplies power for the air water device.

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