Solar heating device

Abstract

The disclosure relates to a solar heating device comprising at least one incidence collector and a thermal container. The thermal container includes at least one light absorbing recess, wherein at least one of the incidence collectors focuses solar beams on a focal point, which is located inside the light absorbing recess. The inner surface of the light absorbing recess converts the energy of the solar beams into radiant heating.

What is claimed is: 
     
         1 . A solar heating device, comprising:
 at least one incidence collector; and   a thermal container, including at least one light absorbing recess, wherein at least one of the incidence collectors focuses solar beams on a focal point, and the light absorbing recess converts the energy of the solar beams into radiant heating.   
     
     
         2 . The solar heating device according to  claim 1 , wherein the incidence collector further includes a Fresnel lenslet array, and the solar beams pass through the Fresnel lenslet array to focus on the focal point located inside the light absorbing recess. 
     
     
         3 . The solar heating device according to  claim 1 , wherein the incidence collector includes a Fresnel mirror, reflecting solar beams and focusing on the focal point, located inside the light absorbing recess. 
     
     
         4 . The solar heating device according to  claim 1 , wherein the incidence collector includes an optical guide, directing solar beams to the focal point located inside the light absorbing recess. 
     
     
         5 . The solar heating device according to  claim 1 , wherein the optical guide includes a light guide plate and a collector prism, the light guide plate includes a micro structural layer and a body, the micro structural layer is disposed on the body, the micro structural layer directs the solar beams to the body, and the collector prism is disposed at a side of the body and focuses the solar beams from the body. 
     
     
         6 . The solar heating device according to  claim 2 , further comprising a guiding light device, directing the solar beams of the focal point to at least one light absorbing recess, wherein the guiding light device is selected from a group consisting of reflecting mirror, lenslet array, and optical fiber. 
     
     
         7 . The solar heating device according to  claim 3 , further comprising a guiding light device, directing the solar beams of the focal point to at least one light absorbing recess, wherein the guiding light device is selected from a group consisting of reflecting mirror, lenslet array, and optical fiber. 
     
     
         8 . The solar heating device according to  claim 5 , further comprising a guiding light device, directing the solar beams of the focal point to at least one light absorbing recess, wherein the guiding light device is selected from a group consisting of reflecting mirror, lenslet array, and optical fiber. 
     
     
         9 . The solar heating device according to  claim 5 , further comprising a guiding light device, including an optical fiber, wherein an end of the optical fiber connects with the collector prism, and the other end of the optical fiber directs the solar beams to the focal point. 
     
     
         10 . The solar heating device according to  claim 1 , wherein the thermal container further includes an outer wall, an inner wall, and a vacuum layer, the vacuum layer is disposed between the outer wall and the inner wall, and the position of the light absorbing recess in the thermal container does not include the vacuum layer between the outer wall and the inner wall. 
     
     
         11 . The solar heating device according to  claim 10 , wherein at least one of the light absorbing recesses includes an incidence opening, the focal point is located inside the light absorbing recess, and the shape of the light absorbing recess is selected from the group consisting of spherical shape, half spherical shape, polygonal shape, symmetrical shape, cubic shape, rectangular shape, conical shape, arc-like shape, and non-symmetrical shape. 
     
     
         12 . The solar heating device according to  claim 11 , wherein the shape of the incidence opening is selected from the group consisting of circular shape, square shape, triangular shape, polygonal shape, rectangular shape, arc-like shape, and curved shape. 
     
     
         13 . The solar heating device according to  claim 11 , wherein the inner surface of the light absorbing recess is coated with a light beam absorbing material, and the absorbing ratio of the light beam absorbing material is greater than 30%. 
     
     
         14 . The solar heating device according to  claim 13 , wherein the light beam absorbing material forms a structural layer including a plurality of micro holes. 
     
     
         15 . The solar heating device according to  claim 1 , further comprising a fixing device, maintaining the relative position between the thermal container and at least one of the incidence collectors. 
     
     
         16 . The solar heating device according to  claim 1 , wherein the light absorbing recess is located at the bottom or the lateral outer wall of the thermal container. 
     
     
         17 . The solar heating device according to  claim 11 , wherein the diameter of the incidence opening is less than the maximal diameter of the light absorbing recess to avoid light leakage from the incidence opening. 
     
     
         18 . The solar heating device according to  claim 12 , wherein the diameter of the incidence opening is less than the maximal diameter of the light absorbing recess to avoid light leakage from the incidence opening. 
     
     
         19 . The solar heating device according to  claim 6 , wherein the shape of the reflecting mirror is selected from the group consisting of plate shape and conical shape. 
     
     
         20 . The solar heating device according to  claim 7 , wherein the shape of the reflecting mirror is selected from the group consisting of plate shape and conical shape.