An air-water making device for desert areas

Abstract

The present invention discloses an air-to-water device for use in desert areas, including a first water-making unit and a refrigerant circulation unit. The air-to-water device also includes a second water-making unit, and the first water-making unit, the refrigerant circulation unit and the second water-making unit are all connected by pipelines. The present invention arranges the second water-making unit to cooperate with the first water-making unit and the refrigerant circulation unit, so that the high-temperature refrigerant and dry cold air generated by the evaporation unit when generating liquid water can be utilized. The high-temperature refrigerant generates high-temperature humid air and a refrigerant at a lower temperature through heat exchange with the outside air in the condensing unit, which reduces the amount of electricity required by the expansion valve to cool the refrigerant. The high-temperature humid air can be heat exchanged with the dry cold air again in the air-to-air heat exchanger to generate liquid water, which greatly improves the energy utilization rate of the device. At the same time, the problem of difficulty in water production in extreme environments is solved by secondary condensation water production.

Description

Technical Field

[0001] The invention relates to the field of water production devices, and in particular to an air water production device used in desert areas. Background Art

[0002] The world's freshwater resources account for only 2.5% of the total water on Earth, and more than 70% of them are frozen in the Antarctic and Arctic ice sheets. In addition, the high mountain glaciers and permafrost snow are difficult to use, making 87% of freshwater resources difficult to use. my country's per capita freshwater resources are relatively scarce, especially in the western regions where water resources are extremely scarce. People are in urgent need of clean and sufficient drinking water.

[0003] In order to meet people's living needs and maintain sustainable development of resources, air water generators are widely used in areas with extremely scarce water resources as a mature technology. However, current air water generators usually use traditional compression water production methods. The traditional compression water production method must sacrifice the COP (cooling capacity and input power) of the compressor to produce water under extreme conditions, resulting in energy waste, and the water production cannot be effectively guaranteed, that is, it has the problems of difficulty in producing water in extreme environments and low energy utilization. Summary of the invention

[0004] In view of this, the present invention provides an air water making device for use in desert areas, which solves the problems of difficulty in making water and low energy utilization rate in traditional air water making machines in extreme environments through the structure and water making method of the water making device.

[0005] In order to solve the above technical problems, the technical solution of the present invention is to adopt an air-to-water production device for use in desert areas, comprising a first water-making unit and a refrigerant circulation unit, the air-to-water production device also comprising a second water-making unit, wherein the first water-making unit, the refrigerant circulation unit and the second water-making unit are all connected by pipelines.

[0006] Optionally, the first water production unit includes a first air supply unit, an evaporation unit, and a first water production pipeline connecting the first air supply unit and the evaporation unit to form a closed passage.

[0007] Optionally, the refrigerant circulation unit includes a condensing unit, the evaporating unit, a variable frequency compression unit, and a circulation pipeline connecting the condensing unit, the evaporating unit and the variable frequency compression unit to form a closed loop.

[0008] Optionally, the second water production unit includes a second air supply unit, the condensing unit, an air-to-air heat exchanger, and a second water production pipeline connecting the second air supply unit, the condensing unit and the air-to-air heat exchanger to form a closed passage.

[0009] Optionally, the air-to-water device further comprises a liquid collecting unit for collecting liquid water, and the first water-making pipeline and the second water-making pipeline are respectively connected to the liquid collecting unit, wherein the liquid collecting unit comprises a water storage tank and a water purification unit.

[0010] Optionally, the refrigerant circulation unit further includes an expansion valve, and the expansion valve is arranged between the condensing unit and the evaporating unit.

[0011] Optionally, the first air supply unit and the second air supply unit both include a fan and an air filter unit.

[0012] Optionally, the evaporation unit is a coating evaporator.

[0013] Optionally, the water purification unit includes a wastewater-free RO unit, a UF+carbon rod composite unit, an ion resin unit, a PP+carbon rod composite filtration unit, an electronic water pump unit and an ultraviolet disinfection unit which are connected in sequence.

[0014] The primary improvement of the present invention is the air-to-water device provided. By setting a second water-making unit to cooperate with the first water-making unit and the refrigerant circulation unit, the high-temperature refrigerant and dry cold air generated by the evaporation unit while generating liquid water can be utilized. Among them, the high-temperature refrigerant generates high-temperature humid air and low-temperature refrigerant through heat exchange with the outside air in the condensing unit, which reduces the amount of electricity required by the expansion valve to cool the refrigerant. At the same time, the high-temperature humid air can be heat-exchanged with the dry cold air again in the air-to-air heat exchanger to generate liquid water, which greatly improves the energy utilization rate of the device. At the same time, the problem of difficulty in water production under extreme environments is solved by secondary condensation water production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a simplified unit connection diagram of the air-to-water device of the present invention;

[0016] Figure 2 It is a simplified device connection diagram of the front view of the air-to-water device of the present invention;

[0017] Figure 3 It is a simplified device connection diagram of a side view of the air-to-water device of the present invention;

[0018] Figure 4 It is a simplified device connection diagram of a top view of the air-to-water device of the present invention;

[0019] Figure 5 is a simplified device connection diagram of a front view of a water purification unit of the present invention; and

[0020] Figure 6 It is a simplified device connection diagram of a side view of the water purification unit of the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, an air-to-water device for use in desert areas includes a first water-making unit and a refrigerant circulation unit. The air-to-water device also includes a second water-making unit. The first water-making unit, the refrigerant circulation unit and the second water-making unit are all connected by pipelines. Figure 2 , Figure 3 and Figure 4 As shown, the first water production unit includes a first air supply unit 11, an evaporation unit 12, and a first water production pipeline 13 connecting the first air supply unit 11 and the evaporation unit 12 to form a closed path. The refrigerant circulation unit includes a condensing unit 21, the evaporation unit 12, a variable frequency compression unit 22, and a circulation pipeline 23 connecting the condensing unit 21, the evaporation unit 12, and the variable frequency compression unit 22 to form a closed loop. The second water production unit includes a second air supply unit 31, the condensing unit 21, an air-air heat exchanger 32, and a second water production pipeline 33 connecting the second air supply unit 31, the condensing unit 21, and the air-air heat exchanger 32 to form a closed path. Specifically, the refrigerant circulation unit also includes an expansion valve 24, which is arranged between the condensing unit 21 and the evaporation unit 12. The refrigerant is circulated in the circulation pipeline 23, and heat is exchanged with the air through the pipe wall without direct contact with the air.

[0023] Furthermore, the air water production device also includes a liquid collection unit for collecting liquid water, and the first water production pipeline 13 and the second water production pipeline 33 are respectively connected to the liquid collection unit, wherein the liquid collection unit includes a water storage tank 41 and a water purification unit 42.

[0024] To facilitate understanding of the water production method of the first water production unit, specifically, after the outside air is transmitted to the evaporation unit 12 through the first water production pipeline 13 under the action of the first air supply unit 11, heat exchange is generated with the low-temperature refrigerant in the evaporation unit 12, so that the air temperature on the surface of the evaporation unit 12 is lower than the air dew point temperature, and condensed liquid water is generated. The condensed liquid water is transmitted to the liquid collection unit through the first water production pipeline 13 under the action of gravity.

[0025] To facilitate understanding of the circulation mode of the refrigerant circulation unit, specifically, while the outside air and the low-temperature refrigerant in the evaporation unit 12 generate heat exchange and generate condensed liquid water, the low-temperature refrigerant temperature increases due to the heat exchange to become a high-temperature refrigerant, and is transmitted to the condensation unit 21 through the variable frequency compression unit. At this time, after the outside air is transmitted to the condensation unit 21 through the second water production pipeline 33 under the action of the second air supply unit 31, the outside air and the high-temperature refrigerant generate heat exchange and generate high-temperature humid air and a refrigerant with a lower temperature. The refrigerant with a lower temperature is transmitted to the expansion valve 24 through the circulation pipeline 23 to further cool down and generate a low-temperature refrigerant to be transmitted to the evaporation unit 12 again.

[0026] To facilitate understanding of the water production method of the second water production unit, specifically, while the outside air and the low-temperature refrigerant in the evaporation unit 12 generate heat exchange and generate condensed liquid water and high-temperature refrigerant, the outside air becomes dry cold air due to the heat exchange and water liquefaction. The dry cold air is transmitted to the air-to-air heat exchanger through the second water production pipeline 33, and at the same time, the high-temperature humid air generated in the condensing unit 21 is transmitted to the air-to-air heat exchanger 32 through the second water production pipeline 33. In the air-to-air heat exchanger 32, the high-temperature humid air and the dry cold air are heat exchanged again. When the temperature of the high-temperature humid air in the air-to-air heat exchanger 32 is lower than the dew point temperature of the air, condensed liquid water is generated and transmitted to the liquid collection unit through the second water production pipeline 33. In the air-to-air heat exchanger, the high-temperature humid air and the dry cold air only generate heat exchange, and do not directly contact.

[0027] The present invention arranges a second water production unit in cooperation with the first water production unit and the refrigerant circulation unit, so that the high-temperature refrigerant and dry cold air generated by the evaporation unit while generating liquid water can be utilized. Among them, the high-temperature refrigerant generates high-temperature humid air and low-temperature refrigerant through heat exchange with the outside air in the condensing unit, which reduces the amount of electricity required by the expansion valve to cool the refrigerant. At the same time, the high-temperature humid air can be heat exchanged with the dry cold air again in the air-to-air heat exchanger to generate liquid water, which greatly improves the energy utilization rate of the device. At the same time, the secondary condensation water production solves the problem of water production difficulties in extreme environments.

[0028] Furthermore, the first air supply unit 11 and the second air supply unit 31 both include a fan and an air filter unit.

[0029] In order to further ensure the water production effect, the evaporation unit 12 is a coated evaporator. Among them, the coated evaporator can be a silica gel-Licl coated evaporator. The present invention sets a silica gel-Licl coated evaporator so that under low humidity conditions, there is no need to lower the air temperature to below the dew point for condensation and water extraction. The silica gel-Licl adsorbent coating on the surface of the evaporator adsorbs moisture in the air and then extracts water through condensation. Due to the use of a silica gel-Licl coated evaporator, the present invention does not need to lower the air temperature to below the dew point for condensation and water production under extreme conditions, that is, water can be produced when the air temperature is above the dew point. Therefore, this process can produce water without sacrificing the COP of the compressor, which effectively increases the amount of water produced under extreme conditions.

[0030] To ensure the water purification effect of the water purification unit 42, as Figure 5 and Figure 6 As shown, the water purification unit 42 includes a wastewater-free RO unit 51, a UF+carbon rod composite unit 52, an ion resin unit 53, a PP+carbon rod composite filter unit 54, an electronic water pump unit 55 and an ultraviolet disinfection unit 56 which are connected in sequence, effectively improving the water purification effect of the condensed water.

[0031] Furthermore, the air-to-water device also includes an external box body, which is made of low-density polyethylene material and is formed in one step by rotational molding. It has the characteristics of high strength and light weight, and meets the transportation drop test specified in GJB 150.18A "Military Equipment Laboratory Environmental Test Method Part 18: Impact Test", and can work normally under the vibration test conditions specified in GJB 150.16A "Military Equipment Laboratory Environmental Test Method Part 16: Vibration Test". At the same time, the box body has a reserved 220VAC interface, which can be directly connected to an external AC power supply, and the internal 12V power supply required is converted by the internal power supply; and an inverter is set in the box body for access to the vehicle-mounted DC power supply.

[0032] Furthermore, the air-to-water device also includes a control unit 6 for refrigeration system control, water treatment process control and water output control. The control unit 6 can be composed of components such as an electronic control mainboard, a control panel, a power supply, a transmission line, a temperature and humidity sensor, and a solenoid valve. Among them, the control unit 6 is divided into two power supplies: strong power and weak power. The strong power supply includes compressors, induced draft motors, etc., using 220V AC power; the weak power supply includes electronic water pumps, instruments, etc., using 12V DC power, and the 12V power is converted by an internal power supply.

[0033] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An air water making device for use in desert areas, comprising a first water making unit and a refrigerant circulation unit, characterized in that: The air-to-water device further comprises a second water-to-water unit, wherein: The first water production unit, the refrigerant circulation unit and the second water production unit are all connected by pipelines; The first water production unit comprises a first air supply unit (11), an evaporation unit (12), and a first water production pipeline (13) connecting the first air supply unit (11) and the evaporation unit (12) to form a closed passage; The refrigerant circulation unit comprises a condensing unit (21), the evaporating unit (12), a variable frequency compression unit (22), and a circulation pipeline (23) connecting the condensing unit (21), the evaporating unit (12), and the variable frequency compression unit (22) to form a closed loop; The second water production unit comprises a second air supply unit (31), the condensing unit (21), an air-to-air heat exchanger (32), and a second water production pipeline (33) connecting the second air supply unit (31), the condensing unit (21), and the air-to-air heat exchanger (32) to form a closed passage; When the outside air exchanges heat with the low-temperature refrigerant in the evaporation unit (12) and generates condensed liquid water and high-temperature refrigerant, the outside air is converted into dry cold air due to the heat exchange and water liquefaction. The dry cold air is transmitted to the air-to-air heat exchanger (32) via the second water production pipeline (33). At the same time, the high-temperature humid air generated in the condensing unit (21) is transmitted to the air-to-air heat exchanger (32) via the second water production pipeline (33); The refrigerant circulation unit further comprises an expansion valve (24), wherein the expansion valve (24) is arranged between the condensing unit (21) and the evaporating unit (12); It also includes control units for refrigeration system control, water treatment process control and water output control.

2. The air-to-water device according to claim 1, characterized in that: The air-water-making device further comprises a liquid collecting unit for collecting liquid water, the first water-making pipeline (13) and the second water-making pipeline (33) are respectively connected to the liquid collecting unit, wherein: The liquid collection unit comprises a water storage tank (41) and a water purification unit (42).

3. The air-to-water device according to claim 1, characterized in that: The first air supply unit (11) and the second air supply unit (31) both comprise a fan and an air filter unit.

4. The air-to-water device according to claim 1, characterized in that: The evaporation unit (12) is a coating type evaporator.

5. The air-to-water device according to claim 2, characterized in that: The water purification unit (42) comprises a wastewater-free RO unit (51), a UF+carbon rod composite unit (52), an ion resin unit (53), a PP+carbon rod composite filtration unit (54), an electronic water pump unit (55) and an ultraviolet disinfection unit (56) which are connected in sequence.

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