Portable air-water making device and control method

Abstract

The present invention discloses a portable air-water making device and a control method, including a refrigeration system, an evaporative condensation system, a rotor system, an air heat exchange system, a water collection system and a measurement and control system in the upper and lower spaces. The refrigeration system and the evaporative condensation system are separated, and the cooling and heat of the refrigeration system are fully utilized. A fan with three-way airflow organization is included; a total heat exchanger is used to cool the regenerated air, and the air condensed by the evaporator is used to cool the adsorption rotor. At the same time, by adopting a climate-adaptive design and an intermittent operation control mode, drinking water can be produced from the air, realizing climate-adaptive water production of the water-making device, and efficient humidification and condensation water production of large-flow air in a small space.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioning and control in special environments, and in particular relates to a portable air-water making device and a control method. Background Art

[0002] In some special environments, such as arid areas and desert areas, fresh water resources are extremely scarce. How to produce fresh water or drinking water efficiently and energy-savingly is a recognized technical problem.

[0003] According to current research, the water content in the air is estimated to be about 14,000 km 3 , is a huge water resource reservoir. However, the water vapor content in the air is low, and the water vapor contained in a unit volume of air is extremely limited, so it needs to be produced in a large flow circulation way. Therefore, the speed and amount of water produced from the air are generally low.

[0004] At present, the general basic principle of air water production is condensation. However, due to the low water vapor content in the air, it is necessary to carry out centralized humidification and then condense water production, which has resulted in an adsorption and condensation integrated water production method and consensus technology. At present, most of the air water production methods are based on this technical integration model, the difference is the adsorbent material, specific process and control method. Such as the patent "Adsorption air water production device" (201820507488.0); patent "A solar adsorption water production device" (201020254466.1); patent "A water production, refrigeration, and air purification integrated system" (201620919668.0); patent "An air water machine" (201721603892.X); patent "A method for making water from air in a low humidity environment" (201811470662.X); patent "Air Air water extraction device and air water extraction vehicle" (201520809623.3); patent "Island air water extraction device and water extraction method" (201710124295.7); patent "A water extraction cabinet for air water extraction equipment" (201920103760.3); patent "A device for extracting water from the air" (201210149074.2); patent "Small-scale air water extraction device and method based on adsorption external heating" (201910024129.9).

[0005] The above patents all involve the recognized technical model of air humidification and then condensation water production, but the specific processes, structures and components are different. However, as mentioned above, the water vapor content per unit volume of air is very low, the climate in the area will undergo seasonal annual changes and daily changes during the day and night, and the temperature and humidity parameters in the air will continue to change, which brings new problems of climate adaptability and energy saving of water production equipment. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention designs airflow organization in a limited space from the perspectives of temperature and heat, humidity, energy exchange, equipment operation and control methods, etc., with the aim of achieving efficient humidification and condensation water production of large-flow air in a small space, thereby achieving energy saving and miniaturization of the system.

[0007] The present invention is achieved through the following technical solutions.

[0008] The present invention provides a portable air-water making device, comprising an upper and lower space:

[0009] The upper space includes a rotor system, an air heat exchange system II, an evaporation condensation system IV and a measurement and control system VI; the lower space includes a refrigeration system III and a water collection system V;

[0010] It also includes an air humidification system I located in the upper and lower spaces;

[0011] The wheel system is connected to the refrigeration system III and the air heat exchange system II respectively, the air heat exchange system II is connected to the evaporation condensation system IV; the evaporation condensation system IV is connected to the water collection system V; the air humidification system I is connected to the humidification air inlet and the humidification air outlet respectively;

[0012] The measurement and control system VI starts the refrigeration system III to operate and perform air control according to the temperature and humidity information of the rotor system.

[0013] Furthermore, the refrigeration system III is divided into a thermal space by sound insulation and heat insulation cotton, including a refrigeration compressor and a condenser that are interconnected. The refrigeration system III is respectively connected to the regeneration air inlet and the rotor system.

[0014] Furthermore, a suction fan and an auxiliary heater are provided on the vent connected to the runner system.

[0015] Furthermore, the evaporation condensation system IV is divided into a cold space by thermal insulation cotton, and an evaporator and a temperature and humidity sensor are arranged in the evaporation condensation system IV, and the evaporator is respectively connected to the air heat exchange system II and the water collection system V.

[0016] Furthermore, the air heat exchange system II is located above the rotor system, and the air heat exchange system II includes a heat exchange air inlet, a heat exchange air outlet and a total heat exchanger.

[0017] Furthermore, the water collection system V includes a water filter purifier and a water collection tank which are connected to the evaporator outlet water through a water collection pipe.

[0018] Furthermore, the wheel system includes an adsorption wheel driven by a wheel motor to rotate horizontally; the adsorption wheel is divided into three areas, namely an adsorption area, a regeneration area and a cooling area; temperature and humidity sensors are respectively provided above and below the adsorption wheel.

[0019] Furthermore, the present invention also provides a portable air-to-water control method, the system adopts a continuous humidification adsorption and intermittent regeneration water production operation mode, including:

[0020] The adsorption wheel and the outlet fan are started in sequence, and the outside air flows out from the air inlet-adsorption wheel-humidification air outlet; at this time, the wheel system starts the water vapor adsorption process.

[0021] When the difference in air moisture content between the adsorption wheel inlet and the adsorption wheel outlet is less than 5%, the refrigeration system III is turned on to operate, and the regeneration air flows in from the regeneration air inlet, passes through the refrigeration system III, the wheel system, the evaporation condensation system IV, and the wheel system to the lower space, merges with the air adsorbed in the upper space, and flows out from the humidification air outlet; at the same time, the water vapor of the regeneration air is condensed into liquid water on the evaporator after passing through the evaporation condensation system IV, and flows into the purifier and the water collection tank from the water collecting pipe. At this time, the process of preparing drinking water begins, and the adsorption process is still going on.

[0022] When the difference in air humidity between the adsorption wheel inlet and the adsorption wheel outlet is greater than 15% to 20%, the refrigeration system and the suction fan are turned off, and the water vapor adsorption process of the wheel system is restarted, and this cycle repeats.

[0023] Furthermore, the air side surface of the evaporator is treated for hydrophobicity; and the evaporator is tilted 3-10° counterclockwise to the horizontal plane.

[0024] Furthermore, the auxiliary heater is an electric heater, and when the difference in air humidity between the rotor inlet and the rotor outlet is less than 10%, the auxiliary heater is turned on.

[0025] Compared with the prior art, the present invention adopts the design idea of ​​strictly separating the refrigeration system from the evaporation system from the perspective of temperature and heat transfer; from the perspective of humidity, the design idea of ​​strictly separating high-humidity air from low-humidity air is adopted; from the perspective of energy exchange, the design idea of ​​fully utilizing outdoor air for heat exchange is adopted by a total heat exchanger; from the perspective of equipment operation and control, the continuous humidification adsorption and intermittent regeneration water production operation control mode of the adsorption wheel is used to ensure that the air is concentratedly humidified to a certain degree before starting the regeneration and condensation water production mode; from the perspective of the structure of the evaporator, the surface of the evaporator is treated with hydrophobicity to prevent ice or frost caused by the evaporator temperature being too low. In addition, the airflow organization design is carried out in a limited space to achieve the miniaturization and portability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 It is the structural process and principle diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the divided areas of the adsorption wheel in the present invention.

[0029] In the figure: 0, adsorption wheel; 1, refrigeration compressor; 2, condenser; 3, expansion valve; 4, evaporator; 5, water filter purifier; 6, water collecting tank; 7, auxiliary heater; 8, sound insulation and heat insulation cotton; 9, thermal insulation cotton; 10, cold space temperature and humidity sensor; 11, wheel inlet temperature and humidity sensor; 12, wheel outlet temperature and humidity sensor; 13, full heat exchanger; 14, water collecting pipe; 15, instrument control panel; 16, power supply; 17, wheel motor; 18, suction fan; 19, heat exchange system fan; 20, outlet fan.

[0030] a, humidification air inlet; a', humidification air outlet; b, heat exchange air inlet; b', heat exchange air outlet; c, regeneration air inlet; Ⅰ, air humidification system; Ⅱ, air heat exchange system; Ⅲ, refrigeration system; Ⅳ, evaporation condensation system; Ⅴ, water collection system; Ⅵ, measurement and control system. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0032] Reference Figure 1 As shown, a schematic diagram of the structure of a portable air-to-water device and a control method is given. The portable air-to-water device of the present invention has two layers of space, the upper layer space includes a wheel system, an air heat exchange system II, an evaporation condensation system IV and a measurement control system VI; the lower layer device includes a refrigeration system III and a water collection system V; and also includes an air humidification system I located on the upper and lower layers.

[0033] The refrigeration system III uses the sound insulation and heat insulation cotton 8 as the interface to form a thermal space, and is composed of a refrigeration compressor 1, a condenser 2, an air suction fan 18, an auxiliary heater 7, and a regeneration air inlet c.

[0034] In the upper space, a wheel system is arranged along the center of the bottom layer, and the wheel system includes an adsorption wheel 0, a wheel motor 17, a wheel inlet temperature and humidity sensor 11, and a wheel outlet temperature and humidity sensor 12. On one side of the adsorption wheel 0 is the wheel motor 17, which drives the adsorption wheel 0 to rotate horizontally. The adsorption wheel 0 is divided into three areas, namely the adsorption area, the regeneration area, and the cooling area. The adsorption area is 180° to 240°, and the remaining area is the regeneration area and the cooling area, which are evenly divided. Figure 2 As shown; temperature and humidity sensors are respectively provided on the upper and lower parts of the adsorption wheel 0.

[0035] In the upper space, the air heat exchange system II includes a heat exchange air inlet b, a heat exchange air outlet b', a heat exchange system fan 19 and a total heat exchanger 13. The total heat exchanger 13 is arranged along the outlet of the regeneration area and is used to cool the regeneration air. The air used for cooling comes from the outside air, and a heat exchange system fan 19 is arranged at the outlet.

[0036] Between the upper and lower spaces, the air humidification system I includes a humidified air inlet a, a humidified air outlet a' and an outlet fan 20. In the lower space, the water collection system V includes a water collection pipe 14 at the outlet of the evaporator, a water filter purifier 5 and a water collection tank 6. The measurement and control system VI is arranged around the equipment box, including an instrument control panel 15 and a power supply 16. The instrument control panel, power supply, shoulder strap, base roller and other auxiliary components are also arranged along the periphery of the equipment box.

[0037] The rotary system is connected to the refrigeration system III and the air heat exchange system II respectively; the air heat exchange system II is connected to the evaporative condensation system IV; the evaporative condensation system IV is connected to the water collection system V; the air humidification system I is connected to the humidification air inlet a and the humidification air outlet a' respectively; the measurement and control system VI starts the refrigeration system III to operate according to the temperature and humidity information of the rotary system to perform air control.

[0038] The refrigeration system III is divided into a hot space by sound insulation and heat insulation cotton 8, including a refrigeration compressor 1 and a condenser 2 that are interconnected. The refrigeration system is respectively connected to the regeneration air inlet c and the rotary system. A suction fan 18 and an auxiliary heater 7 are provided on the vent connected to the rotary system. The evaporation and condensation system IV is divided into a cold space by thermal insulation cotton 9, and the evaporator 4 is respectively connected to the air heat exchange system II and the water collection system V. The air heat exchange system II is located above the rotary system, and the air heat exchange system II is respectively connected to the heat exchange air inlet b, the heat exchange air outlet b', the refrigeration system III and the evaporation and condensation system IV. In the water collection system V, there is a water filter purifier 5 and a water collection tank 6 that are connected to the outlet water of the evaporator 4 through a water collection pipe 14.

[0039] In the system layout of the device, the compressor and condenser on the lower layer occupy about three-quarters of the space, of which the compressor is placed in the center, and a shock-absorbing spring is provided at the bottom of the compressor; a regeneration air inlet is provided on the right side of the refrigeration system, and the upper side of the refrigeration system III is connected to the regeneration area of ​​the adsorption wheel, and is provided with an air suction fan, which delivers the hot air of the refrigeration system to the regeneration area of ​​the adsorption wheel; at the same time, in order to ensure the regeneration efficiency, an auxiliary heater is provided at the regeneration entrance of the adsorption wheel. The remaining one-quarter of the space on the lower layer is placed with a water filter purifier and a water collection tank, and an air outlet of the adsorption area of ​​the adsorption wheel is provided on the side.

[0040] The regenerated air cooled in the total heat exchanger enters the aforementioned evaporation system IV. The evaporation condensation system IV forms a cold space with the insulation cotton 9 as the interface, including an expansion valve 3, an evaporator 4, and a cold space temperature and humidity sensor 10. The regenerated air is cooled in the evaporator, and the water vapor therein condenses to form liquid water. The liquid water flows from the water collecting pipe into the purification filter and finally collects in the water collecting tank. The cooled air enters the cooling area of ​​the adsorption wheel, which is used to cool the adsorption wheel to facilitate the adsorption of water vapor by the adsorption wheel in the adsorption area. The air after passing through the cooling area of ​​the adsorption wheel flows into the lower space, merges with the air after the adsorption area of ​​the adsorption wheel, and is discharged from the exhaust port.

[0041] System control: A temperature and humidity sensor is installed at the regeneration air inlet of the evaporation system to control the opening of the expansion valve and the evaporation temperature of the evaporator to be always 1-2°C lower than the dew point temperature of the regeneration air; temperature and humidity sensors are installed on both sides of the air inlet and outlet of the adsorption area of ​​the adsorption wheel to detect the difference in moisture content of the adsorption wheel. When the difference in moisture content between the two is less than 5%, the regeneration process of the refrigeration system and the regeneration area is started to form an intermittent regeneration water production operation mode. This operation control mode is in line with the reality that the water vapor content in the air is low and long-term continuous humidification operation is required. Secondly, it is in line with the system energy-saving mode.

[0042] In order to reflect climate adaptability and facilitate operation and control of the state, the fan and the rotor motor 17 in the system can be operated at variable frequencies.

[0043] The operation mode of the device of the present invention is as follows: first, the adsorption wheel 0 is started to rotate, and then the outlet fan 20 is started. After the outside air flows through the adsorption wheel 0 from the humidification air inlet a, it flows out from the humidification air outlet a'; at this time, the wheel starts the water vapor adsorption process. When the wheel inlet temperature and humidity sensor 11 and the wheel outlet temperature and humidity sensor 12 detect that the difference in the moisture content of the air between the adsorption wheel inlet and the adsorption wheel outlet is less than 5%, the refrigeration system III, the suction fan 18 and the heat exchange system fan 19 are turned on; the regenerated air flows from the regeneration air inlet c through the condenser 2, enters the regeneration area of ​​the adsorption wheel 0, passes through the total heat exchanger 13, enters the evaporator 4, and then flows into the cooling area of ​​the adsorption wheel 0, and then flows into the lower space, merges with the adsorbed air, and finally flows out from the humidification air outlet a'. At the same time, after the regeneration air passes through the evaporation condensation system IV, the water vapor is condensed into liquid water on the evaporator 4 and flows into the purifier 5 and the water collecting tank 6 from the water collecting pipe 14; at this time, the drinking water preparation process begins, and the adsorption process is still in progress. When the temperature and humidity sensor 11 at the rotor inlet and the temperature and humidity sensor 12 at the rotor outlet detect that the difference in the moisture content of the air between the adsorption rotor inlet and the adsorption rotor outlet is greater than 15% to 20%, the refrigeration system III and the suction fan 18 are turned off, and the adsorption work of the rotor system is restarted, and the cycle is repeated.

[0044] The cold space temperature and humidity sensor 10 is used to control the opening of the expansion valve 3 to adjust the evaporation temperature of the evaporator 4 to ensure that the evaporation temperature is 1-2°C lower than the dew point temperature of the air. The fan I, fan II, fan III and the rotary motor 17 can all be operated at variable frequencies. The air side surface of the evaporator 4 is treated for hydrophobicity; the evaporator 4 is tilted 3-10° counterclockwise from the horizontal plane.

[0045] The auxiliary heater 7 is an electric heater. When the difference in moisture content between the temperature and humidity sensor 11 at the rotor inlet and the temperature and humidity sensor 12 at the rotor outlet is less than 10%, the auxiliary heater 7 is turned on.

[0046] Through the system of the present invention, the functions and structures are classified in space, and the "refrigeration system" and "evaporation condensation system" are separated, so that the cooling capacity and heat of the refrigeration system are fully utilized. The regeneration air is cooled by the total heat exchanger, and the adsorption wheel is cooled by the cold air of the evaporator. At the same time, the climate adaptability design and the operation control mode of continuous humidification adsorption intermittent regeneration water production are adopted. These technical measures can greatly improve the efficiency and energy-saving characteristics of the system.

[0047] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A portable air-to-water device, characterized in that: Including upper and lower floors: The upper space includes a rotor system, an air heat exchange system II, an evaporation condensation system IV and a measurement and control system VI; the lower space includes a refrigeration system III and a water collection system V; It also includes an air humidification system I located between the upper and lower spaces; The wheel system comprises an adsorption wheel (0) driven by a wheel motor (17) to rotate horizontally; the adsorption wheel (0) is divided into three areas, namely an adsorption area, a regeneration area and a cooling area; temperature and humidity sensors are respectively provided on the upper and lower parts of the adsorption wheel (0); The wheel system is connected to the refrigeration system III and the air heat exchange system II respectively, the air heat exchange system II is connected to the evaporation condensation system IV; the evaporation condensation system IV is connected to the water collection system V; the air humidification system I is connected to the humidification air inlet (a) and the humidification air outlet (a') respectively; The measurement and control system VI starts the refrigeration system III to operate and perform air control according to the temperature and humidity information of the rotor system.

2. A portable air-to-water device according to claim 1, characterized in that: The refrigeration system III is divided into a thermal space by sound insulation and heat insulation cotton (8), and includes a refrigeration compressor (1) and a condenser (2) that are interconnected. The refrigeration system III is respectively connected to the regeneration air inlet (c) and the rotor system.

3. A portable air-to-water device according to claim 2, characterized in that: An air suction fan (18) and an auxiliary heater (7) are provided on the vent connected to the rotary wheel system.

4. The portable air-to-water device according to claim 1, characterized in that: The evaporation and condensation system IV is divided into a cold space by heat-insulating cotton (9). An evaporator (4) and a temperature and humidity sensor are arranged in the evaporation and condensation system IV. The evaporator (4) is connected to the air heat exchange system II and the water collection system V respectively.

5. The portable air-to-water device according to claim 1, characterized in that: The air heat exchange system II is located above the rotor system, and the air heat exchange system II comprises a heat exchange air inlet (b), a heat exchange air outlet (b') and a total heat exchanger (13).

6. The portable air-to-water device according to claim 1, characterized in that: The water collection system V comprises a water filter purifier (5) and a water collection tank (6) which are connected to the outlet water of the evaporator (4) through a water collection pipe (14).

7. A portable air-to-water control method for the device according to any one of claims 1 to 6, characterized in that: The system adopts the operation mode of continuous humidification adsorption and intermittent regeneration water production, including: The adsorption wheel (0) and the air outlet fan (20) are started in sequence, and the outside air flows out from the air inlet (a) - adsorption wheel (0) - humidification air outlet (a'); at this time, the wheel system starts the water vapor adsorption process; When the difference in air moisture content between the inlet of the adsorption wheel (0) and the outlet of the adsorption wheel (0) is less than 5%, the refrigeration system III is turned on, and the regeneration air flows in from the regeneration air inlet (c), passes through the refrigeration system III, the wheel system, the evaporation condensation system IV, and the wheel system to the lower space, merges with the air adsorbed in the upper space, and flows out from the humidification air outlet (a'); at the same time, after the regeneration air passes through the evaporation condensation system IV, the water vapor is condensed into liquid water on the evaporator (4), and flows into the purifier (5) and the water collecting tank (6) from the water collecting pipe (14); When the difference in air humidity between the inlet of the adsorption wheel (0) and the outlet of the adsorption wheel (0) is greater than 15% to 20%, the refrigeration system III and the suction fan (18) are turned off, and the water vapor adsorption process of the wheel system is restarted, and this reciprocating cycle is repeated.

8. A portable air-to-water control method according to claim 7, characterized in that: The air side surface of the evaporator (4) is treated to be hydrophobic; the evaporator (4) is inclined counterclockwise at 3-10 degrees relative to the horizontal plane.

9. A portable air-to-water control method according to claim 7, characterized in that: The auxiliary heater (7) is an electric heater. When the difference in air humidity between the rotor inlet and the rotor outlet is less than 10%, the auxiliary heater (7) is turned on.

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