Patent Publication Number: US-2022213671-A1

Title: Atmospheric Water Generator

Description:
1. FIELD OF THE INVENTION 
     The present invention relates to water generation devices. More particularly, the invention discloses an atmospheric water generation device capable of providing filtered drinking water. 
     BACKGROUND OF THE INVENTION 
     Atmospheric water generators for extracting water from the ambient air are known. Most of these devices use some type of condenser to extract moisture from the water vapor in the local environment. The problem with prior art atmospheric water generators (AWGs) is that they are primarily used for heating and cooling, or are derived from, e.g. AC units. Accordingly, they are more proficient performing the task for which they were designed than generating water. 
     The present invention is directed to an atmospheric water generator (AWG) with enhanced water extraction capability. The apparatus is part of a heating or cooling unit, which unit may be either mobile or stationary. Water diverting and funneling is used to collect rainwater in the reservoir of the apparatus. In order to increase the moisture extraction rate, outside air is passed through an additional evaporator coil having a higher effective surface area than a standard evaporator coil. Additional moisture is extracted from the ambient air by providing a second evaporator coil to humidify the incoming air to a higher dew point to provide more moisture for the enhanced evaporator coil to extract. Water extracted from the environment is stored in the reservoir, and is filtered before passing to an outlet. 
     SUMMARY OF THE INVENTION 
     It is a major object of the invention to provide an atmospheric water generator. 
     It is another object of the invention to provide an atmospheric water generator that has both heating and cooling function. It is another object of the invention to provide an atmospheric water generator that includes a funnel for collecting rainwater. 
     It is another object of the invention to provide an atmospheric water generator having filtration. 
     It is another object of the invention to provide an atmospheric water generator having enhanced water extraction capability. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a diagram of the components of the water generator apparatus of the invention. 
         FIG. 2  shows a perspective view of the housing of the water generator apparatus of the invention. 
         FIG. 3  shows a perspective view, partly in section, of the housing of the water generator apparatus of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     Referring now to  FIGS. 1-3 , an illustration of the inventive apparatus is shown. The apparatus, generally indicated by the numeral  10 , is a heating/cooling unit having enhanced water extraction capabilities, the apparatus  10 . The unit can function as both a heating and cooling unit by reversing the cycle in the well known manner. 
     The apparatus is contained within a housing  50  which may be made from metal or rigid plastic or both. The housing  50  includes output vents  52  for outputting heated/cooled air into a room, and exhaust vents  54  for discharging heated air to the outside. Rainwater falling onto the housing  50  is directed by the slightly sloped top panel  56  into a funnel  58  which drains into reservoir  60 , which also receives water from the extraction process which is described in detail below. 
     A key aspect of the invention is the enhanced water extraction capability. To that end, a high efficiency evaporator coil arrangement is used, along with a second condenser coil which pre-treats the incoming air to add humidity, which in turn increases the amount of water generated by the apparatus  10  by increasing the amount of moisture in the ambient air.  FIG. 1  shows an interior of an air conditioning/dehumidifying arrangement modified in accordance with the inventive concept, wherein a compressor  1  compresses a refrigerant such as a chlorofluorocarbon, hydrochlorofluorocarbon, or hydrofluorocarbon, in gas form and pumps it through a first set of condenser coils  9 , where the gas heats and becomes a liquid, with the condenser coils  9  dissipating the heat which is exhausted through vents  54 . This is a standard arrangement. Refrigerant liquid passes through expansion valves  18 ,  20  and into evaporator coils  15  and  17 , where the refrigerant expands into a gas, thereby dropping in temperature and cooling the evaporator coils  15 ,  17  before returning to the compressor. The expansion valves  18 ,  20  provide dynamic resistance and flow control over the amount of refrigerant released into the evaporators  15 ,  17 . 
     The enhanced water extraction capability is primarily achieved by the inventive evaporator arrangement. Evaporator  15  is a treated microfin evaporator formed of two rows of coils. Air is taken in by an air fan  25 , which then pushes the air over the cold evaporator coils  15 ,  17  to lower the air temperature and effect condensation of the airborne water vapor into liquid water which drains into reservoir  60 , which reservoir is made of food grade stainless steel. Additional water is extracted from the air by positioning a second set of condenser coils  16  between evaporator coils  15 ,  17 . These condenser coils  16  serve to increase the humidity of the air around the evaporator coils to increase the amount of water that can be extracted. To operate in heating mode, the evaporator coil  15  is operated in heating mode via microprocessor  37  control. Air passing over the coil  15  will then be heated, with cool air forced out through vents  54 . 
     Water from evaporators  15 ,  17  drains into reservoir  60  through filter  39 . The water from reservoir  60  is filtered before passing to the outlet or spigot  41  where it can be accessed by the user. Filtering of the water is accomplished by providing a particulate filter  33  in series with a UV light chamber  35  along the outlet conduit  62 . The particulate filter  33  is preferably a white charcoal/carbon water type of filter. Water is pumped to the spigot  41  via a water pump  35  that is activated when a predetermined amount of water is in the reservoir  60 , and the user operates the spigot  41  to extract water. The amount of water in the reservoir  60  is sensed by a sensor  32  which sends control signals to microprocessor  37 . An overflow drain  39  will allow the water in reservoir  60  to drain to the exterior of the units via a drain hole in the unit  10  housing. 
     The microprocessor  37  also receives signals from 3 sensors in order to effect operation of the water generator  10 . An intake sensor  14  is used to measure the temperature of the incoming air, and control the duty cycle of the compressor  1  in order to achieve a desired set temperature. A signal corresponding to the temperature of the output air is provided by another sensor (not shown), and a dew point sensor  12  is used to measure the local humidity so that the amount of water generated can be known. 
     It is to be understood that the present invention is not limited to the sole embodiment described above, but encompasses any and all embodiments within the scope of the following claims: