Soalr energy water heater

Abstract

A solar energy water heater includes a water pipe and a plurality of solar heat units transversely extended from the water pipe, wherein each solar heat unit includes a heat collecting tube is adapted for heating up the water within the heat collecting tube and a heat transferring tube disposed in the heat collecting tube to define a water conduit. The heat transferring tube has a water channel and an outer opening end extended towards to an outer closed end of the heat collecting tube to communicate the water channel with the water conduit of the heat collecting tube such that the water is guided to flow from the water inlet to each of the solar heat units to circularly flow between the water conduit and the water channel thereof so as to substantially heat up the water before flowing out at a water outlet of the water pipe.

1 . A solar energy water heater, comprising: 
 a water pipe having a water inlet and a water outlet and defining a water passage therebetween for guiding water to flow from said water inlet to said water outlet; and    a plurality of solar heat units transversely and spacedly extended from said water pipe to communicate with said water passage thereof, wherein each of said solar heat units comprises:    a heat collecting tube having an outer closed end and an inner opened end extended from said water pipe, wherein said heat collecting tube is adapted for collecting solar energy and transforming said solar energy into heat energy to heat up said water within said heat collecting tube; and    a heat transferring tube, which is made of heat conductive material, disposed in said heat collecting tube to define a water conduit between said heat collecting tube and said heat collecting tube, wherein said heat transferring tube has a water channel and an outer opening end extended towards to said outer closed end of said heat collecting tube to communicate said water channel with said water conduit of said heat collecting tube such that said water is guided to flow from said water inlet to each of said solar heat units to circularly flow between said water conduit and said water channel thereof so as to substantially heat up said water at each of said solar heat units before flowing out at said water outlet of said water pipe.    
   
   
       2 . The solar energy water heater, as recited in  claim 1 , further comprising a plurality of water guiders spacedly disposed in said water passage of said water pipe to align with said solar heat units respectively, wherein each of said water guiders has a guiding passage extended to an inner end of said respective heat transferring tube for guiding said water to flow into said respective water channel from said water passage such that said water flows to said respective water conduit from said water channel through said outer opening end of said heat transferring tube and back to said water passage of said water pipe through said inner opened end of said solar collecting tube.  
   
   
       3 . The solar energy water heater, as recited in  claim 2 , wherein said solar heat units are perpendicularly extended from said water pipe at a direction such that said water is guided to flow from said water inlet to each of said solar heat units for heat exchange and to flow out at said water outlet.  
   
   
       4 . The solar energy water heater, as recited in  claim 1 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       5 . The solar energy water heater, as recited in  claim 3 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       6 . The solar energy water heater, as recited in  claim 3 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       7 . The solar energy water heater, as recited in  claim 5 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       8 . The solar energy water heater, as recited in  claim 1 , wherein said solar heat units are formed in pairs that each pair of said solar heat units are transversely and opposedly extended from said water pipe to communicate with said water passage, wherein said water is guided to flow from said water inlet to said water outlet through each pair of said solar heat units in a zigzag manner.  
   
   
       9 . The solar energy water heater, as recited in  claim 8 , wherein said two heat transferring tubes of each pair of said solar heat units are integrally extended to form an elongated tubular structure through said water pipe so as to communicate said water channels with each other.  
   
   
       10 . The solar energy water heater, as recited in  claim 8 , further comprising a plurality of water guiders spacedly disposed in said water passage of said water pipe to align with said pairs of solar heat units respectively, wherein each of said water guiders has a guiding passage extended to said inner opened end of one of said heat collecting tubes for guiding said water to flow into said respective water conduit of each pair of said solar heat units.  
   
   
       11 . The solar energy water heater, as recited in  claim 9 , further comprising a plurality of water guiders spacedly disposed in said water passage of said water pipe to align with said pairs of solar heat units respectively, wherein each of said water guiders has a guiding passage extended to said inner opened end of one of said heat collecting tubes for guiding said water to flow into said respective water conduit of each pair of said solar heat units.  
   
   
       12 . The solar energy water heater, as recited in  claim 8 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       13 . The solar energy water heater, as recited in  claim 11 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       14 . The solar energy water heater, as recited in  claim 11 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       15 . The solar energy water heater, as recited in  claim 13 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       16 . The solar energy water heater, as recited in  claim 1 , wherein said solar heat units are formed in pairs that each pair of said solar heat units are transversely and opposedly extended from said water pipe to communicate with said water passage, wherein said water is guided to flow from said water inlet to said water outlet through each pair of said solar heat units in a splitting manner.  
   
   
       17 . The solar energy water heater, as recited in  claim 16 , further comprising a plurality of water guiders spacedly disposed in said water passage of said water pipe to align with said pairs of said solar heat units respectively, wherein each of said water guiders, having a T-shape, has two guiding passages communicatively extended to two inner ends of said heat transferring tubes respectively for guiding said water to flow from said water passage into said water channels.  
   
   
       18 . The solar energy water heater, as recited in  claim 17 , wherein each of said water guiders has a guiding splitter disposed within said water passage for evenly dividing said water therewithin into two portions to flow into said respective pair of said solar heat units.  
   
   
       19 . The solar energy water heater, as recited in  claim 16 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       20 . The solar energy water heater, as recited in  claim 18 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       21 . The solar energy water heater, as recited in  claim 18 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       22 . The solar energy water heater, as recited in  claim 20 , further comprising a heat insulating layer enclosing an outer surface of said water pipe for preventing heat loss of said water passing along said water passage.  
   
   
       23 . A method of heating water through a solar energy water heater which comprises a water pipe and a plurality of solar heat units transversely and spacedly extended therefrom, each said solar heat units comprising a heat collecting tube and a heat transferring tube which is made of heat conductive material disposed therein, wherein said method comprises the steps of: 
 (a) guiding said water to flow into a water inlet of said water pipe to each of said solar heat units;    (b) guiding said water to flow into a water channel of said heat transferring tube from an inner end of said heat transferring tube towards an outer opening end thereof so as to heat up said water along said water channel, wherein said inner end of said heat transferring tube is extended from said water pipe to communicate said water channel with said water pipe;    (c) guiding said water to flow into a water conduit from said outer opening end of said heat transferring tube to heat up said water along said water conduit, wherein said water conduit is formed between said heat collecting tube and said heat collecting tube, wherein said outer opening end of said heat transferring tube is extended towards to an outer closed end of said heat collecting tube to communicate said water channel with said water conduit of said heat collecting tube;    (d) guiding said water to flow into said water pipe from an inner opened end of said heat collecting tube, wherein said inner opened end of said heat collecting tube is extended from said water pipe to communicate said water conduit with said water pipe; and    (e) guiding said water to flow out of said water pipe at a water outlet thereof.    
   
   
       24 . The method, as recited in  claim 23 , wherein said solar heat units are formed in pairs that each pair of said solar heat units are transversely and opposedly extended from said water pipe to communicate with said water passage, wherein, in step (b), said water is split into two portions to respectively flow into said water channels of said heat transferring tubes of said pair of said solar heat units.  
   
   
       25 . The method, as recited in  claim 23 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.  
   
   
       26 . The method, as recited in  claim 24 , wherein each of said heat collecting tube comprises an outer tubular member, an inner tubular member sealed therein in end-to-end manner, and a solar energy collecting agent sealedly provided between said outer and inner tubular members, wherein said water conduit is formed between said inner tubular member and said heat transferring tube such that said solar energy collecting agent is adapted for collecting said solar energy to heat up said water within said inner tubular member.