Smokeless safe combustion device

A combustion device comprising:

• a stove body having a periphery including first and second sides disposed oppositely and including a wick disposed between the first and second sides, with the wick spaced from the first and second sides at first and second distances respectively;
• and
• a flow guiding device including a first shielding member and a second shielding member respectively connected to the first and second sides of the stove body, wherein the wick is spaced from the first and second shielding members at third and fourth distances respectively, wherein the third distance is greater than the first distance and the first shielding member is spaced from the first side, and wherein the fourth distance is greater than the second distance and the second shielding member is spaced from the second side, wherein the flow guiding device has an inlet port on a side thereof adjacent to the stove body, an outlet port on another side, and a passage having an inlet and outlet end respectively communicating with the inlet and outlet ports, and wherein the flow guiding device includes a heat extracting apparatus disposed vertically above and outside of and spaced from the stove body;
• and
• wherein the heat extracting apparatus has first and second ends disposed oppositely and first and second lateral edges disposed oppositely and extending between the first end and the second end, wherein the outlet port is located at the first end of the heat extracting apparatus, wherein the heat extracting apparatus includes a first flow guiding member and a second flow guiding member cooperating with the first flow guiding member to form the passage, with the first flow guiding member disposed vertically above and spaced from the second flow guiding member, wherein the first flow guiding member includes a surface bounding an upper part of the passage, with the surface being sloped upward from an end adjacent to the second end of the heat extracting apparatus to an end adjacent to the first end of the heat extracting apparatus, wherein the second flow guiding member includes a surface bounding a lower part of the passage, with the surface of the second flow guiding member being sloped downward from an end adjacent to and spaced from the surface of the first flow guiding member to an end adjacent to the first end of the heat extracting apparatus, wherein the passage includes a narrowed section defined between the surface of the first flow guiding member and the end of the surface of the second flow guiding member which is adjacent to the surface of the first flow guiding member, wherein the passage is flared from the narrowed section to the outlet end, wherein the heat extracting apparatus includes at least one third flow guiding member extending in a vertical direction and connected between the first and second flow guiding members, wherein the at least one third flow guiding member is disposed adjacent to the narrowed section, wherein the at least one third flow guiding member includes a portion extending between the first and second flow guiding members and above the second flow guiding member, wherein the at least one third flow guiding member includes a portion extending below the second flow guiding member, wherein the heat extracting apparatus includes a projection disposed vertically above from the surface of the second flow guiding member, wherein the end of the surface of the second flow guiding member which is adjacent to the surface of the first flow guiding member is spaced from the surface of the first flow guiding member at a distance which defines a first width, wherein the projection is spaced from the surface of the first flow guiding member at a distance which defines a second width, wherein the second width is smaller than the first width, wherein the at least one third flow guiding member includes two third flow guiding members spaced from one another, and wherein the projection is located between and spaced from the two third flow guiding members.