| 摘要 |
PURPOSE:To realize a cross flow fan easy to assemble and improved so as to reduce air quantity fluctuation and a noise level, and an air conditioner compact with low noise using this face and contributing to saving resource and energy. CONSTITUTION:A small impeller 1 with plural blades 2 disposed at the same pitch into cylindrical shape around a rotary shaft is made a unit small impeller, and plural impellers 1, seven impellers 1a-1g, for instance, are connected in the direction of the rotary shaft. At the connecting time, the impellers 1 are connected by shifting the positions of the blades 2 of the adjacent small impellers 1 mutually by the specified quantity, avoiding the center position of the blade pitch. The shifted positions of the blades 2 are set by recessed parts, provided at the back face of each side plate 10 for connecting the blades 2, as positioning means. An air conditioner easily attaining the expected purpose can be realized by substituting an existing once-through fan. |
