fan

Abstract

------05 / 05 / 2563------(OCR) Page 1 of page 1, summary of the invention of a small fan with high airflow volume. Specifically, fan 1 consists of a first fan blade 5 and a second fan blade 6, which are aligned with the center of the first fan blade 5 and the axis of rotation P. A grille 321 is mounted and positioned on the side of the second fan blade 6, with gaps between the second fan blade 6, and is increasingly tilted from the center of the axis of rotation P of the second fan blade 6 towards the first fan blade 5, further outward radially. Furthermore, the edge of the grille 321 of the wing 62 of the second fan blade 6 is increasingly tilted from the center of the axis of rotation P towards the first fan blade 5, further outward radially. Figure 6 is the chosen figure. ------------

Claims

------05 / 05 / 2020------(OCR) Page 1 of 2 Claims 1. A fan of a specific nature is that it consists of a first and a second fan blade which is positioned so that the center of its axis of rotation is aligned with the said first fan blade and rotates in the opposite direction to the said first fan blade, and a grille is mounted and positioned on the side of the said second fan blade with a gap between the said second fan blade and which is increasingly tilted from the center of its axis of rotation of the said second fan blade toward the said first fan blade further outward radially. The edge of the grille side of the wing of the said second fan blade is increasingly tilted from the center of its axis of rotation toward the said first fan blade.

2. The fan specified in Claim 1 of a specific nature is that the said first fan blade has a first central axis, the said second fan blade has a second central axis to which a protruding knob toward the first central axis is mounted. 3.

4. A fan specified in Reputation 2, which is characterized by the fact that the knob is erected in a cylindrical shape from the said second central axis, with the said axis of rotation at its center; the gap between the end of the knob and the said first central axis is narrowed over the gap between the said first fan blade and the said second fan blade.

5. A fan specified in Reputation 1 through Reputation 4, which is characterized by the fact that the said first and said second central axis are each made in a cylindrical shape, with the base of the knob of the said second central axis positioned opposite to the base of the said second central axis.

6. Any of the fans specified from Reputation 1 through Reputation 4, which is characterized by the fact that the edge of the grille side of the said wing is made so that the gap between the said grille and the said second fan blade is parallel.

7. Any fan specified in Reputations 1 through 5, which is characterized by the motor of the first fan blade being mounted on the first housing containing the first fan blade; page 2 of 2 pages of the motor of the second fan blade being mounted on the second housing with the grille containing the second fan blade; 8. Any fan specified in Reputations 1 through 6, which is characterized by the first fan blade being positioned upwind and the second fan blade being positioned downwind; 9. Any fan specified in Reputations 1 through 7, which is characterized by the first fan blade having its front and rear edges of the axis of rotation parallel;