Patent Publication Number: US-2018030695-A1

Title: Air purification and condensation water-production system

Description:
BACKGROUND OF THE INVENTION 
     Technical Field 
     The invention relates to water-production systems, in particular to an air purification and condensation water-production system. 
     Description of Related Art 
     Existing fresh water resources which can be easily utilized by humans are mainly from rivers, lakes and shallow groundwater; fresh water resources are deficient due to large consumption, and clean water resources in places with abundant electricity and energy are also relatively deficient and need to be saved and protected due to serious pollution and extremely imbalanced regional distribution; water resources have already been precious resources for humans, and water resource problems have even become a major strategy concerning sustainable development of the national economy and society, and lasting political stability. 
     In certain remote arid and distressed areas where clean water resources are extremely difficult to obtain and water resource shortages exist, it is hard to lay long delivery pipelines for long-distance supply of drinking water, or to transport drinking water back and forth through transportation facilities without considering transportation costs, or to mount large water quality optimization systems, and consequentially, the cost of safe drinking water becomes extremely high; besides the high drinking water cost, water quality changes or secondary pollution can be caused by long-distance delivery or transportation, and consequentially, water cannot be directly drunk by people safely. 
     In addition, although the personal demands for drinking water of people in daily life are not definitely huge (the personal demands are different according to different areas, different climates and different environments), the requirements for the sanitation, cleanliness, sterility and non-toxicity of the drinking water are high; a solution to the production of pure drinking water at reasonable costs in places where energy and electricity are available is a significant problem urgently needing to be solved. 
     BRIEF SUMMARY OF THE INVENTION 
     For solving the technical problems, the invention provides an air purification and condensation water-production system for producing clean drinking water by means of energy. 
     According to the technical scheme adopted by the invention for solving the problems, the air purification and condensation water-production system comprises at least one water-production device, wherein the water-production device comprises a unit body, a water collection tank and a refrigeration system, the refrigeration system comprises evaporators and a condenser, and the evaporators are arranged on the side faces of the unit body; the water collection tank is arranged at the bottom of the unit body and located below the evaporators, and the condenser is arranged at the top of the unit body; outside air enters the unit body through the evaporators located on the side faces of the unit body and then is exhausted from air outlets in the top of the unit body through the condenser. 
     According to the air purification and condensation water-production system, the water-production device comprises filter screens arranged on the outer sides of the evaporators, and outside air enters the unit body through the filter screens and the evaporators. 
     According to the air purification and condensation water-production system, the front end and the rear end of the unit body are sealed, and the evaporators are arranged on the two sides of the unit body. 
     According to the air purification and condensation water-production system, the water-production device comprises a control unit, the control unit comprises a controller, a temperature sensor and a humidity sensor, and the output end of the temperature sensor and the output end of the humidity sensor are connected with the controller; the condenser comprises a plurality of fans, and a driving circuit of the fans is connected with the controller; the controller determines the number of fans needing to be started according to data collected by the temperature sensor and the humidity sensor. 
     According to the air purification and condensation water-production system, the fans are driven by a variable frequency motor, and the controller adjusts the rotating speed of the fans according to data collected by the temperature sensor and the humidity sensor. 
     According to the air purification and condensation water-production system, the water-production device comprises a water pump, and a driving circuit of the water pump is connected with the controller; the control unit comprises a water level sensor, the water level sensor is mounted in the water collection tank, and the output end of the water level sensor is connected with the controller; the controller starts or stops the water pump according to data collected by the water level sensor. 
     The air purification and condensation water-production system comprises a main control unit and a plurality of water-production devices, and the controllers of the water-production devices are connected with the main control unit. 
     The air purification and condensation water-production system of the invention can be used for producing pure drinking water at reasonable costs in places where energy and electricity are available, and overcome the drinking water difficulty for remote arid areas lacking water sources. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       A further detailed description of the invention is given with accompanying drawings and specific execution modes as follows. 
         FIG. 1  is an outside view of a water-production device of an embodiment of the invention; and 
         FIG. 2  is a transverse sectional view of the water-production device of the embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     An air purification and condensation water-production system of an embodiment of the invention comprises a main control unit and a plurality of water-production devices. 
     As is shown in  FIG. 1  and  FIG. 2 , the water-production device structurally comprises a unit body  1 , a water collection tank  2 , metal filter screens  5 , a water pump  6 , a control unit and a refrigeration system. 
     A controller of the water-production device is connected with the main control unit of the water-production system. 
     The refrigeration system comprises a compressor, a throttle valve, evaporators  3  and a condenser  4 , wherein the evaporators  3  are arranged on the two sides of the unit body  1 , and the front end and the rear end of the unit body  1  are sealed; the water collection tank  2  is arranged at the bottom of the unit body  1  and located below the evaporators  3 , and the condenser  4  is arranged at the top of the unit body  1 . 
     The metal filter screens  5  are arranged on the outer sides of the evaporators  3 , outside air enters the unit body  1  through the metal filter screens  5  and the evaporators  3  and then is exhausted from air outlets  101  in the top of the unit body  1  through the condenser  4 ; when the air passes through the evaporators  3 , heat is absorbed by the evaporators, the temperature is decreased sharply, water vapor in the air is condensed into water drops, and the water drops drip into a water collector below. 
     The control unit comprises a controller, a water level sensor, a temperature sensor and a humidity sensor, wherein the output end of the temperature sensor and the output end of the humidity sensor are connected with the controller. The condenser  4  comprises a plurality of fans  401 , the fans  401  are driven by a variable frequency motor, and a driving circuit of the variable frequency motor is connected with the controller. A control panel  102  of the water-production device is arranged at the front end of the unit body  1 . 
     A driving circuit of the water pump  6  is connected with the controller. The water level sensor is mounted in the water collection tank  2 , and the output end of the water level sensor is connected with the controller. 
     The air purification and condensation water-production system of the embodiment of the invention is composed of a plurality of water-production devices which operate independently, the number of combined water-production devices can be determined according to requirements, and the system can produce 10,000-1,000,000 liters of water every day according to the number of the water-production devices. 
     Each water-production device of the embodiment of the invention is controlled by one control unit, production, operation and alarm signals of each water-production device are all summarized into a main control unit of a central control room, and all the water-production devices are flexibly, safely and environmentally friendly coordinated by the main control unit of the central control room in an energy-saving mode. 
     The control unit of each water-production device controls the water-production function according to different working conditions in the external environment, data detected by the humidity sensors and the temperature sensors are summarized into the controllers, and the controllers adjust the air quantity by controlling the number (generally one to three) of operating fans and the operating speed of the fans, so that the optimal water production quantity is obtained, and water is produced through air purification and condensation in the most environment-friendly and energy-saving state. When the humidity of the external environment is low, the speed or the number of the fans is decreased, and the fans are even stopped; when the humidity of the external environment is high, the speed or the number of the fans is increased. 
     According to the embodiment of the invention, the evaporators are arranged on the two sides of the unit body of each water-production device, and the metal filter screens are arranged on the outer layer of each water-production device, so that ordinary sand and dust are isolated, the evaporators are protected, and the water production quality is improved; the evaporators on the two sides purify and condense air according to the air quantity for water production, and then condensate water is collected through the water collectors below the evaporators; when the water levels of the water collectors reach certain values, signals are emitted by the water level sensors and transmitted to the controllers, then the main control unit of the central control room is informed by the controllers, and the water pumps are synchronously started to pump the condensate water in the water collectors to a filter system. 
     The fans at the tops of the unit bodies pump air into the unit bodies from the outside of the evaporators, and the air passes through the condensers to cool high-pressure refrigerants; the air has already been cooled (with the temperature being lower than the outside temperature) by the evaporators after passing through the evaporators, and the cold air cools the high-pressure refrigerants when passing through the condensers; compared with a method for cooling high-pressure refrigerants through outside normal-temperature air, the efficiency is high; through the configuration, the size of the condensers can be reduced, the refrigeration systems are utilized more effectively, and the compression power is lowered; the system is more environmentally friendly and capable of saving more energy, and the water production quantity can be increased while the size of the unit bodies is reduced.