Patent Publication Number: US-2018045183-A1

Title: Electricity Generator Powered By Air Exhaust

Description:
FIELD OF THE INVENTION 
     The present invention relates to an electricity generator which is powered by air exhaust from a cooling tower so as to generate electricity stably. 
     BACKGROUND OF THE INVENTION 
     A conventional wind turbine generates mechanical energy by way of wind power and converts the mechanical energy into electric energy of an electricity generator. However, natural wind power cannot produce and be recycled stably. 
     As illustrated in  FIG. 4 , a conventional cooling tower  80  contains an air exhaust port  81  arranged on a top thereof, a motor  82  fixed on the air exhaust port  81 , and an exhaust fan  83  rotatably connected with the motor  82 , wherein the exhaust fan  83  exhausts hot air from the cooling tower  80  at a fixed wind speed. However, air exhaust of the cooling tower  80  cannot be recyclable efficiently. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide an electricity generator which is powered by air exhaust from a cooling tower so as to generate electricity stably. 
     To obtain above-mentioned objective, an electricity generator provided by the present invention is mounted on an air exhaust port of a cooling tower and contains a delivery pipe and a wind turbine. 
     The delivery pipe includes an air inlet and an air outlet opposite to the air inlet, and the air inlet corresponds to the air exhaust port of the cooling tower. 
     The wind turbine includes a power generation device and a propeller rotatably connected with the power generation device and housed between the air inlet and the air outlet of the delivery pipe. 
     Preferably, the delivery pipe is connected with the air exhaust port so that when the cooling tower operates, hot air exhausts from the air outlet via the air inlet. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the assembly of an electricity generator according to a preferred embodiment of the present invention. 
         FIG. 2  is a cross sectional view showing the operation of the electricity generator according to the preferred embodiment of the present invention. 
         FIG. 3  is another cross sectional view showing the operation of the electricity generator according to the preferred embodiment of the present invention. 
         FIG. 4  is a side plan view of a conventional cooling tower. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to  FIG. 1 , an electricity generator according to a preferred embodiment of the present invention comprises: a delivery pipe  10  and a wind turbine  20 , and the electricity generator is mounted on an air exhaust port of a cooling tower so as to extract heat from exhaust air of the cooling tower. 
     The delivery pipe  10  includes an air inlet  11  and an air outlet  12  opposite to the air inlet  11 , and the air inlet  11  corresponds to the air exhaust port  81  of the cooling tower  80 , wherein the delivery pipe  10  is connected with the air exhaust port  81  so that when the cooling tower  80  operates, hot air exhausts from the air outlet  12  via the air inlet  11 . 
     The wind turbine  20  includes a power generation device  21  and a propeller  22  rotatably connected with the power generation device  21  and housed between the air inlet  11  and the air outlet  12  of the delivery pipe  10 . 
     As shown in  FIG. 2 , when the cooling tower  80  operates, the hot air flows through the delivery pipe  10  of the electricity generator, and the propeller  22  is pushed by the hot air to revolve, such that the power generation device  21  is actuated by the propeller  22  to generate electricity, after mechanical energy of the power generation device  21  transformers into electric energy. 
     Referring further to  FIG. 3 , multiple electricity generators are mounted on a plurality of cooling towers  80 , respectively, wherein a plurality of wind turbines  20  of the multiple electricity generators are parallelly connected together so that electricity generating from the plurality of wind turbines  20  gathers to a power controller  40  which supplies the electricity to an electricity loading  50  configured to supply the electricity to illumination equipment. Alternatively, the power controller  40  supplies the electricity to at least one storage battery  60  configured to store the electricity, wherein the at least one storage battery  60  is coupled with a voltage converter  70  configured to convert the electricity at a predetermined voltage, thus supplying the electricity to the electricity loading  50 . 
     Accordingly, the electricity generator of the present invention is powered by the air exhaust from the cooling tower so as to generate the electricity stably. For example, it is assumed that the electricity generator generates the electricity of 400 W/per hour and the cooling tower operates every day, so the electricity generator of the present invention generates electricity of 3,456 kWh (i.e., 400 W×24 hrs×360 days). Preferably, the delivery pipe  10  reduces noises from a motor and loss of cooling water in the cooling tower. 
     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. The scope of the claims should not be limited by the preferred embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole.