Auto-focusing device for solar heat energy power generators and power generator cluster

Abstract

An auto-focusing device for solar heat energy power generators includes a stationary heating unit for absorbing solar energy to make works, a lens unit including a lens and a frame, a first driving unit connected to the frame and driving the frame, and a tracking unit electrically connected to the first driving unit and controlling the first driving unit to output power. The lens is fixed to the frame and focuses solar beam on the heating unit. The frame is movable along a curved track such that the lens always aims at the sun. Multiple auto-focusing devices for solar heat energy power generators are arranged in matrix form so as to generate electric power.

1 . An auto-focusing device for solar heat energy power generators, comprising:
 a stationary heating unit for absorbing solar energy to make works;   a lens unit including a lens and a frame, the lens being fixed to the frame and focusing solar beam on the heating unit, the frame being movable along a curved track;   a first driving unit connected to the frame and driving the frame, and   a tracking unit electrically connected to the first driving unit and controlling the first driving unit to drive the position of the frame.   
     
     
         2 . The device as claimed in  claim 1 , wherein the frame of the lens unit is connected to a rotary disk and a second driving unit is connected to the rotary disk, the second driving unit drives the rotary disk, the tracking unit is electrically connected to the second driving unit so as to control the second driving unit to drive the position of the rotary disk. 
     
     
         3 . The device as claimed in  claim 2 , further comprising a central axle and the heating unit mounted on the central axle, the central axle extending through the rotary disk which is rotatable about the central axle. 
     
     
         4 . The device as claimed in  claim 3 , wherein the central axle is fixed to a base which is located beneath the rotary disk, multiple wheels and legs are connected to an underside of the base. 
     
     
         5 . The device as claimed in  claim 4 , wherein the first driving unit is fixed to the rotary disk and includes a first motor, a first reduction unit and a first worm rod, the first motor is connected to the first reduction unit which is connected to the first worm rod, the first worm rod is connected to the frame. 
     
     
         6 . The device as claimed in  claim 5 , wherein the frame of the lens unit includes a first post and a second post which is located at a distance form the first post, a link has two end gears connected to two ends thereof , the first post is connected to a first shaft which has two first transmission gears, the two first transmission gears are respectively connected to the first worm rod and one of the end gears, the second post is connected to a second shaft which has a second transmission gear, the second transmission gear is connected with the other end gear, the lens is connected to the first and second posts. 
     
     
         7 . The device as claimed in  claim 6 , wherein the second driving unit is fixed to the underside of the base and includes a second motor, a second reduction unit, a second worm rod and a third shaft, the third shaft has two third transmission gears on two ends thereof, the second motor is connected to the second reduction unit which is connected with the second worm rod, the second worm rod is connected to one of the two third transmission gears, the third shaft extends through the base and is connected to the rotary disk. 
     
     
         8 . The device as claimed in  claim 7 , wherein the rotary disk has a rotary gear which is connected to the central axle and connected to the other third transmission gear. 
     
     
         9 . The device as claimed in  claim 8 , wherein the rotary disk has multiple rollers connected to an underside thereof and contacting the base. 
     
     
         10 . The device as claimed in  claim 8 , wherein two solar panels are respectively connected to the first and second shafts, the two solar panels are electrically connected to the first and second motors. 
     
     
         11 . The device as claimed in  claim 1 , wherein the tracking unit is a passive tracking data base which stores the track information of the sun. 
     
     
         12 . The device as claimed in  claim 11 , wherein the passive tracking data base includes a GPS system and updates the tracks of the sun. 
     
     
         13 . The device as claimed in  claim 1 , wherein the tracking unit is an active tracking sensor which receives the sun light and tracks the sun. 
     
     
         14 . The device as claimed in  claim 1 , wherein the heating unit is an external combustion engine. 
     
     
         15 . The device as claimed in  claim 1 , further comprising a cover which is mounted to the auto-focusing device. 
     
     
         16 . A power generator cluster, comprising:
 multiple auto-focusing devices for solar heat energy power generators which are connected to a power plant, the auto-focusing devices each including a stationary heating unit and absorbing solar energy to make works; a lens unit including a lens and a frame, the lens being fixed to the frame and focusing solar beam on the heating unit, the frame being movable along a curved track; a first driving unit connected to the frame and driving the frame; and a tracking unit electrically connected to the first driving unit and controlling the first driving unit to drive the position of the frame.   
     
     
         17 . The generator cluster as claimed in  claim 16 , wherein the multiple auto-focusing devices for solar heat energy power generators are arranged in matrix form.