Adsorption type air water taking device based on MOFs material

Abstract

The utility model relates to the technical field of air water taking devices, in particular to an adsorption type air water taking device based on MOFs materials, which comprises an adsorption box, a condensation box, a water storage box and a compression refrigeration assembly which are communicated in sequence, an air inlet hole is formed in the bottom of the adsorption box, and a centrifugal fan is installed on the inner top of the adsorption box. The upper end of the adsorption box is communicated with the condensation box, the compression refrigeration assembly comprises an evaporator, a compression tank and a condenser, the evaporator is installed in the condensation box, the condenser is installed at an air inlet hole, the water storage box is communicated with the condensation box through a connecting pipe, and the water storage box is located below the condensation box; a water receiving pipe is installed on the adsorption type air water taking device and connected with the water storage tank. The adsorption type air water taking device based on the MOFs material can adapt to different climatic environments, and when the environment humidity is low, the adsorption wind speed of the centrifugal fan is automatically increased, capture of water molecules is accelerated, and the water taking effect and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air water taking device technical field especially based on MOFs material's adsorption type air water taking device. BACKGROUND

[0002] Air contains sufficient moisture, and air water resource has the characteristics of fast update cycle, large dynamic reserve and convenient local utilization as a kind of unconventional water resource. Developing efficient air water taking device can realize decentralized water supply independent of centralized water supply system, which has very important practical significance in solving water resource shortage problems in border, desert and island areas.

[0003] Most of the existing air water taking technology adopts direct cooling type water taking, such as CN212452896U discloses an air water taking machine, the speed of evaporator fan is adjusted to adjust the temperature of evaporator at any time, and automatic control is realized, so that the temperature of evaporator approaches dew point temperature; CN207392307U also discloses an air water taking machine, which uses a ventilation pipe, and an electric air regulating valve and an air regulating valve are used to increase the length of the ventilation pipe to increase the air speed, the electric air regulating valve is used to adjust the ventilation area of the ventilation pipe, and the air regulating valve is used to increase the air intake and reduce the air short circuit reflux, thereby increasing the water output.

[0004] The above-mentioned patents all use compressor condensers and fans to directly condense and liquefy the moisture in the air to achieve the effect of water taking, but the above-mentioned method is very dependent on environmental humidity and temperature, and the water taking effect is poor and the cycle is long in low-temperature and low-humidity environment. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide an adsorption type air water taking device based on MOFs material to at least solve the problem that the existing air water taking technology is very dependent on environmental humidity and temperature, and the water taking effect is poor and the cycle is long in low-temperature and low-humidity environment.

[0006] The utility model solves the above-mentioned technical problem through the following technical means:

[0007] The embodiment of the utility model provides an adsorption type air water taking device based on MOFs material, which comprises adsorption box, condensing box, water storage tank and compression refrigeration assembly which are sequentially communicated, the bottom of the adsorption box is provided with air inlet hole, centrifugal fan is installed on the inner top of the adsorption box, the upper end of the adsorption box is communicated with the condensing box, the compression refrigeration assembly comprises evaporator, compression tank and condenser, the evaporator is installed in the condensing box, the condenser is installed in the air inlet hole, the water storage tank is communicated with the condensing box through connecting pipe, and the water storage tank is located below the condensing box; Water collecting pipe is installed on the adsorption type air water taking device, and the water collecting pipe is connected with the water storage tank.

[0008] In some embodiments, the inside of the adsorption box is provided with an adsorption bed, which comprises a heating film and a metal mesh frame filled with water-absorbing material.

[0009] In some embodiments, a polyimide film is arranged on the heating film.

[0010] In some embodiments, guide rails are fixedly installed on the inner side walls of the opposite sides of the adsorption box, and the two ends of the metal mesh frame are slidingly installed on the guide rails.

[0011] In some embodiments, a connecting cylinder is connected between the adsorption box and the condensation box, and the connecting cylinder communicates with the adsorption box and the condensation box.

[0012] In some embodiments, the condensation box is trumpet-shaped, and the radial dimension of the condensation box near the end close to the adsorption box is smaller than the radial dimension of the condensation box far from the adsorption box.

[0013] In some embodiments, a water level sensor is installed in the water storage tank.

[0014] In some embodiments, a water pump is installed on the pipeline connecting the water collecting pipe and the water storage tank.

[0015] In some embodiments, the adsorption type air water taking 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 to the adsorption type air water taking device.

[0016] In some embodiments, the adsorption type air water taking device further comprises a shell, the adsorption box, the condensation box, the water storage tank and the compression refrigeration assembly are installed in the shell, and universal wheels are installed at the bottom of the shell.

[0017] The adsorption type air water taking device based on MOFs material of the utility model, through the efficient heat exchange of the heating film and the condenser, realizes the purpose of rapid desorption, the heating film is designed to be attached to the inside of the adsorption bed, has a larger surface area, and ensures the uniformity of the heating process. The adsorption type air water taking device based on MOFs material of the utility model can adapt to different climate environments, when the environmental humidity is low, the adsorption wind speed of the centrifugal fan is automatically increased, the capture of water molecules is accelerated, and the water taking effect and efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is the sectional view of the adsorption type air water taking device based on MOFs material;

[0019] Fig. 2 is the structural schematic view of the adsorption type air water taking device based on MOFs material;

[0020] Fig. 3 is a structure diagram of the shell-free adsorption type air water taking device;

[0021] Wherein, the adsorption box 100, the air inlet hole 110, the centrifugal fan 120, the heating film 131, the metal screen frame 132, the water absorption material 133, the condensation box 200, the water outlet 210, the water storage box 300, the evaporator 410, the compression tank 420, the condenser 430, the water receiving pipe 510, the water pump 520, the shell 600, the air inlet 610, the air outlet 620, the connecting cylinder 700, the storage battery 810, the solar cell panel 820, the PCB board 830, the control panel 840, the universal wheel 900. DETAILED DESCRIPTION

[0022] The advantages and effects of the present application can be understood by the content disclosed in the specification. It should be noted that the drawings provided in the following examples are only used for illustrative purposes, and the drawings are only schematic drawings, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual size of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings.

[0023] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like is based on the orientation or positional relationship shown in the drawings, and is only used for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the drawings are only used for illustrative purposes, and should not be construed as limiting the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0024] Please refer to Figs. 1-3 :

[0025] The application discloses an adsorption type air water taking device based on MOFs material, which comprises an adsorption box 100, a condensation box 200, a water storage box 300 and a compression refrigeration assembly which are sequentially connected, the bottom of the adsorption box 100 is provided with an air inlet hole 110, the inner top of the adsorption box 100 is provided with a centrifugal fan 120, the upper end of the adsorption box 100 is communicated with the condensation box 200, the compression refrigeration assembly comprises an evaporator 410, a compression tank 420 and a condenser 430, the evaporator 410 is installed in the condensation box 200, the condenser 430 is installed in the air inlet hole 110, the water storage box 300 is communicated with the condensation box 200 through a connecting pipe, and the water storage box 300 is located below the condensation box 200; a water receiving pipe 500 is installed on the adsorption type air water taking device, and the water receiving pipe 510 is connected with the water storage box 300.

[0026] Please refer to Fig. 1 The overall size of the adsorption type air water taking device is 524*376*504mm, a cuboid aluminum alloy shell 600 is adopted, and the adsorption box 100, the condensation box 200, the water storage box 300 and the compression refrigeration assembly are all installed in the shell 600. The bottom of the shell 600 is provided with an air inlet 610 corresponding to the air inlet hole 110, and the condenser 430 is located between the air inlet 610 and the air inlet hole 110. In the adsorption stage, the refrigerant in the condenser 430, the compression tank, the evaporator 410 and the copper pipes connected with each other jointly realizes the effect of rapidly cooling the surface of the evaporator 410 in the condensation box 200. In the process, the fins of the condenser 430 at the bottom of the adsorption box 100 are rapidly heated, and the new air entering through the air inlet 610 helps the fins of the condenser 430 to be rapidly cooled, so that the heat exchange process is accelerated. Meanwhile, the air heated by the fins of the condenser 430 enters the adsorption box 100, the condenser 430 is arranged between the air inlet 610 and the air inlet hole 110, and in the desorption process, the air entering the adsorption box 100 can also be preheated, so that the energy is effectively utilized.

[0027] Please refer to Fig. 3The inside of the adsorption box 100 is provided with an adsorption bed, which comprises a heating film 131 and a metal mesh frame 132, and the metal mesh frame 132 is filled with a water absorption material 133, and the water absorption material 133 is a metal-organic framework (MOFs), which has an abnormally high surface area and adjustability, rich chemical variability, excellent atmospheric water capture capacity at low relative humidity and low regeneration energy consumption. The air water taking device with the metal-organic framework (MOFs) as the built-in adsorbent can actively adsorb and store air moisture in the desert, border and other extreme drought conditions, and can greatly shorten the water taking period through the cooperation of the efficient desorption and condensation functions of the device. The heating film 131 is provided with a polyimide film. The inner side walls of the opposite sides of the adsorption box 100 are fixedly provided with guide rails, and the two ends of the metal mesh frame 132 are correspondingly slidably installed on the guide rails, so that the adsorption bed and the guide rails cooperate to form a drawer type structure, which is convenient for better water absorption material.

[0028] Specifically, the overall size of the adsorption box 100 is 359*361*447mm, which is made of aluminum alloy material. The adsorption bed is composed of a heating film 131 with a polyimide film and a 10-mesh metal mesh frame 132 made of 316L stainless steel. The heating principle of the heating film 131 is mainly based on resistance heating. When electric current passes through a metal conductor (such as nickel-chromium alloy or copper-nickel alloy), electric energy will be converted into heat energy. The polyimide film laid on the surface of the metal conductor not only serves as an insulator to ensure safety, but also has good heat conduction performance. It can quickly and uniformly transfer the heat generated by the metal conductor to the MOFs balls being heated. The maximum surface temperature can reach 120℃, and the heating time only needs 20s. The heating film 131 adopts a hollow form, which cooperates with the metal mesh frame 132 to make the air have good passing rate in the adsorption bed. The MOFs balls are loaded in a single layer on each adsorption bed. Good ventilation can maximize the adsorption performance of the MOFs balls.

[0029] The design of the centrifugal fan 120 at the top of the adsorption box 100 can generate higher pressure than the axial flow fan, which can effectively solve the problem of overcoming the large pressure loss generated by the air passing through the adsorption bed. The air speed can be adjusted to meet the different air speed requirements of the adsorption and desorption stages.

[0030] The connecting cylinder 700 is connected between the adsorption box 100 and the condensing box 200, and the connecting cylinder 700 communicates with the adsorption box 100 and the condensing box 200. The condensing box 200 is trumpet-shaped, and the radial size of the condensing box 200 near the adsorption box 100 is smaller than the radial size of the condensing box 200 away from the adsorption box 100. The trumpet-shaped adsorption box 100 is beneficial to the full contact of the evaporator 410 fins with the hot and humid air, so as to achieve better liquefaction effect. The connecting cylinder is connected with the adsorption box 100 and the condensing box 200 by screw fastening to realize the flow of gas.

[0031] The fins of the evaporator 410 are located in the condensing box 200. The liquid droplets accumulated on the fins of the evaporator 410 due to condensation naturally drip to the bottom of the condensing box 200 under the action of gravity. The bottom of the condensing box 200 is specially designed with a small slope structure, as well as an air outlet hole and a water outlet 210. The design of this slope structure aims to facilitate the flow of liquefied water under the guidance of gravity and ultimately into the water storage tank 300. The water storage tank 300 is used to receive the water condensed and liquefied by the fins of the evaporator 410. The water storage tank 300 is internally equipped with a water level sensor that has the function of monitoring the water level in the water storage tank 300 in real time and controlling the operation of the device accordingly. The control process is executed and monitored by the PLC control system. When the water level in the tank drops to a predetermined level, the water level sensor will again trigger the operation switch of the device to ensure the continuous and stable operation of the adsorption air water extraction device.

[0032] The water outlet of the condensing box 200 is connected to the water storage tank 300 below it. The water pump 520 is installed on the pipeline connecting the water storage tank 300 and the water receiving pipe 510. The water pump 520 is responsible for pumping water from the water storage tank 300 to the water receiving pipe 510. The compression tank 420 and the battery 810 are both installed below the water storage tank 300 and separated by a partition to ensure electrical safety and structural stability.

[0033] The adsorption air water extraction device of the present embodiment also includes a solar power generation mechanism connected to the battery 810, which powers the adsorption air water extraction device. The solar power generation mechanism uses existing conventional solar power generation components, with the solar panels 820 fixedly installed on the top of the adsorption box 100. Under the action of the solar power generation mechanism, solar energy can be converted into electrical energy and stored in the battery, ensuring that the adsorption air water extraction device can work continuously and stably without external power supply.

[0034] The housing 600 is provided with an air outlet 620 corresponding to the position of the air outlet hole, so that the dried air can be discharged. The housing 600 is installed with a PCB board 830, which is responsible for controlling the electronic system and functions of the adsorption air water extraction device. All parts that need to be connected and controlled are electrically connected to the PCB board 830, such as the condenser 430, the evaporator 410, the centrifugal fan 120, the water level sensor, the heating film 131, etc. One side of the housing 600 is also installed with a control panel 840 for user operation and parameter setting. The water receiving pipe 510 is installed at the lower end of the adsorption air water extraction device to facilitate the collection and discharge of condensed water. The bottom of the housing 600 is equipped with four universal wheels 900 for easy movement and positioning. In order to improve energy efficiency, the adsorption box 100 and the housing 600 are wrapped with a layer of thermal insulation cotton to reduce heat loss.

[0035] The operation of the above-mentioned adsorption type air water taking device includes three main steps of adsorption, desorption and condensation, and the specific operation is as follows:

[0036] In the adsorption stage, first start the centrifugal fan 120 and set the rotating speed to 2600r / min. The strong suction generated by the rotation of the blades of the centrifugal fan 120 can suck the external air into the adsorption box 100 from the air inlet and the air inlet hole 110. After the humid environment air passes through the 10-purpose adsorption bed and fully contacts with the 8mm adsorption ball in the adsorption bed to complete the adsorption, the dry air is discharged through the air outlet on the shell 600, and the adsorption process is completed. This stage usually lasts for 3-4 hours.

[0037] In the desorption stage, the rotating speed of the centrifugal fan 120 is set to 1500r / min, and the compression refrigeration assembly is started. When the compression refrigeration assembly is running, the temperature of the surface fins of the evaporator 410 will be reduced, and the temperature of the surface fins of the condenser 430 will be increased. In this way, the air entering from the air inlet will be preheated by the condenser 430 to increase the temperature in the desorption stage. At the same time, the heating film 131 is turned on to raise the temperature to the desorption temperature of 100℃. The purpose is to make the water captured by the MOFs adsorption ball in the adsorption stage be desorbed in the form of water vapor at high temperature, and at the same time, the running speed of the centrifugal fan 120 is reduced, and the high-temperature and high-humidity gas desorbed is slowly sent into the condensation box 200. If the wind speed is too high, the humid and hot air passing through the fins of the evaporator 410 will not have time to liquefy and will overflow from the air outlet.

[0038] In the condensation stage, the condensation stage is carried out at the same time as the desorption stage. The condensation box 200 receives the humid and hot air from the adsorption box 100. When the high-temperature and high-humidity gas encounters the low-temperature fins of the evaporator 410, it is liquefied and begins to gather water droplets. After the water droplets become large, they slide down to the bottom of the condensation box 200 under the action of gravity and are finally collected into the water storage tank 300 through the pipeline. The water in the water storage tank 300 can be taken out from the water inlet pipe 510 under the action of the water pump 520, and the water taking is completed.

[0039] In the desorption stage, after setting the desorption temperature on the operation panel, the temperature sensor installed in the adsorption box 100 will continuously monitor the desorption temperature. If the temperature exceeds the set temperature, the heating film 131 will stop heating, otherwise it will run at full power. In the condensation stage, the temperature and humidity sensor installed in the condensation box 200 will continuously monitor the temperature and humidity in the condensation box 200 and the dew point temperature. Since the water in the MOFs is gradually reduced in the desorption process, the dew point temperature in the condensation box 200 will also continuously increase. In order to prevent energy waste during the operation of the compressor and the condenser 430, the PLC control system will control the condenser 430 to control the temperature near the dew point temperature, so as to achieve the purpose of saving energy.

[0040] The whole dehumidification process is monitored and managed by the PLC control system. In the adsorption stage, the control system is responsible for adjusting the adsorption time. In the desorption stage, the system monitors the desorption temperature in the adsorption box 100. If the temperature is too high, the heating is stopped. Otherwise, the heating is continued, and after the desorption temperature is reached, the desorption time is controlled by timing. In the condensation stage, the system monitors the temperature and humidity of the air outlet and the dew point temperature of the condensation box 200, so as to maintain the condensation fin temperature near the dew point temperature, and achieve the energy saving effect.

[0041] The above-mentioned adsorption type air water taking device can set differentiated water taking parameters according to the adsorption characteristics and desorption characteristics of specific materials. For example, the above-mentioned experimental conditions can also be changed to: the adsorption wind speed requirement of the material is 4 m / s, 2 hours can reach adsorption saturation, the desorption temperature is 80 DEG C, and 0.5H can completely desorb water molecules, etc. Parameters can be changed in real time in the operation panel. The drawer type structure design of the adsorption bed facilitates users to quickly replace various adsorption materials, thereby improving the flexibility and adaptability of the device.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced without departing from the purpose and scope of the present application. The technical, shape and structure parts not described in detail should be covered in the scope of the claims of the present application.

Claims

1. An adsorptive air-to-water harvester based on MOFs materials, characterized in that, The application relates to an adsorption type air water taking device, which comprises sequentially connected adsorption boxes, condensation boxes, water storage boxes and compression refrigeration assemblies, the bottom of the adsorption box is provided with an air inlet hole, a centrifugal fan is installed on the inner top of the adsorption box, the upper end of the adsorption box is connected with the condensation box, the compression refrigeration assembly comprises an evaporator, a compression tank and a condenser, the evaporator is installed in the condensation box, the condenser is installed in the air inlet hole, the water storage box is connected with the condensation box through a connecting pipe, and the water storage box is located below the condensation box; a water collecting pipe is installed on the adsorption type air water taking device and connected with the water storage box.

2. The MOFs material based adsorptive air-to-water harvester of claim 1, wherein, An adsorption bed is installed in the adsorption box, the adsorption bed comprises a heating film and a metal mesh frame, and the metal mesh frame is filled with water absorbing materials.

3. The MOFs material based adsorptive air-to-water harvester of claim 2, wherein, A polyimide film is arranged on the heating film.

4. The MOFs material-based adsorptive air-to-water harvester of claim 3, wherein, Guide rails are fixedly installed on the inner side walls of the opposite sides of the adsorption box, and the two ends of the metal mesh frame are slidingly installed on the guide rails.

5. The MOFs material-based adsorptive air-water harvester of claim 1, wherein, A connecting cylinder is connected between the adsorption box and the condensation box, and the connecting cylinder is connected with the adsorption box and the condensation box.

6. The MOFs material-based adsorptive air-to-water harvester of claim 5, wherein, The condensation box is trumpet-shaped, and the radial dimension of the condensation box near the adsorption box is smaller than the radial dimension of the condensation box far from the adsorption box.

7. The MOFs material-based adsorptive air-water harvester of claim 1, wherein, A water level sensor is installed in the water storage box.

8. The MOFs material-based adsorptive air-to-water harvester of claim 7, wherein, A water pump is installed on the pipeline connecting the water collecting pipe with the water storage box.

9. The MOFs material based adsorptive air-to-water harvester according to any one of claims 1-8, characterized in that, The adsorption type air water taking 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 adsorption type air water taking device.

10. The MOFs material-based adsorptive air-to-water harvester of claim 9, wherein, The adsorption type air water taking device further comprises an outer shell, the adsorption box, the condensation box, the water storage box and the compression refrigeration assembly are installed in the outer shell, and universal wheels are installed on the bottom of the outer shell.

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