A heat re-cycling drying machine, comprising:
- an air intake flowpath (110);
- a heating space (104) having a heating space inlet and a heating space outlet;
- a cold/hot air mixing space structure (1023) having a relatively low temperature air intake port (1021) and a returned hot air intake port (1022) for mixing relatively low temperature air from the relatively low temperature air intake port (1021) with hot air from the returned hot air intake port (1022), the hot air having a temperature higher than a temperature of the relatively low temperature air, wherein the cold/hot air mixing space structure (1023) communicates with and is configured to supply a mixture of the hot air and the relatively low temperature air to the heating space (104) through the heating space inlet;
- a relatively low temperature air pipeline structure (1029) including a relatively low temperature air inlet (101), a first relatively low temperature air passage having a vertically extending section, an inclined second relatively low temperature air passage connected to the vertically extending section by a relatively low temperature air passage bent section,
- wherein the inclined second relatively low temperature air passage extends in a direction that forms a first acute angle with respect to the vertically extending section of the first relatively low temperature air passage,
- wherein the relatively low temperature air inlet (101) is configured to input external relatively low temperature air from the air intake flowpath (110) to the first relatively low temperature air passage, in order for relatively low temperature air to be delivered to the relatively low temperature air intake port (1021), and in turn, for the relatively low temperature air to flow through the relatively low temperature air intake port (1021) to the cold/hot air mixing space structure (1023);
- an electric fluid pump (106);
- a hot air pumping inlet (111);
- a hot air bent fluid pipeline (1035) connected to the hot air pumping inlet (111) and including a vertical first hot air passage, a downwardly inclined second hot air passage having an external outlet (109) at a lower end, a bend that joins the vertical first hot air passage with the downwardly inclined second hot air passage so that the downwardly inclined second hot air passage extends in a direction that forms a second acute angle with respect to the vertical first hot air passage,
- wherein the second acute angle and the first acute angle are configured so that the downwardly inclined second hot air passage extends parallel to and is separated from the inclined second relatively low temperature air passage of the pipeline structure (1029) by a shared thermally conductive structure formed by sidewalls of the downwardly inclined second hot air passage and the inclined second relatively low temperature air passage, the shared thermally conductive structure being configured such that thermal energy passes between the downwardly inclined second hot air passage and the inclined second relatively low temperature air passage,
- wherein the electric fluid pump (106) is configured to pump the hot air from at least one of the cold/hot air mixing space structure (1023) and the heating space (104) into the hot air bent fluid pipeline (1035) through the hot air pumping inlet (111) and cause said hot air to flow upwardly through the vertical first hot air passage,
- wherein the vertical first hot air passage, the downwardly inclined second hot air passage, and the second relatively low temperature air passage are configured such that the hot air that flows upwardly through the first hot air passage then passes through the bend and the downwardly inclined second hot air passage so as to transfer thermal energy between the downwardly inclined second hot air passage and the inclined second relatively low temperature air passage and cause water contained in the hot air to condense as a result of said transfer of thermal energy, flow downwardly through the downwardly inclined second hot air passage, and be discharged out of the external outlet (109), and
- wherein the hot air bent fluid pipeline (1035) is further configured to cause a first portion of the hot air to be discharged from the external outlet (109), and to cause a second portion of the hot air that remains in the hot air passage after discharge of the first portion of the hot air to flow upwardly toward and through the returned hot air intake port (1022) into the cold/hot air mixing space structure (1023) for mixing with the relatively low temperature air from the relatively low temperature air intake port (1021), and
- at least one heating device including at least a thermoelectric cooling chip (200) installed between the inclined second relatively low temperature air passage of the pipeline structure (1029) and the second hot air passage and included in the shared thermally conductive structure, a heating surface of the thermoelectric cooling chip (200) being configured to heat air flowing through the inclined second relatively low temperature air passage of the pipeline structure (1029), and a cooling surface of the thermoelectric cooling chip (200) being configured to increase cooling of the hot air flowing through the second hot air passage and thereby increase a condensation effect of water contained in the hot air flowing through the second hot air passage for discharge through the external air outlet (109);
- and
- an electronic control device (107) for controlling operation of at least one of the thermoelectric cooling chip (200) and the electric fluid pump (106), in response to operation settings input through an external operation interface (108).