Cross-flow fan

A cross-flow fan that is made of resin, the cross-flow fan comprising:

• a first fan block including
• a disc-shaped or annular first support plate,
• plural first blades having first one-side distal ends connected to the first support plate, and
• a first outer peripheral ring having a first ring portion that interconnects outer ends of the plural first blades adjacent first other-side distal ends of the plural first blades located on an opposite side of the first one-side distal ends;
• and
• a second fan block including
• a disc-shaped or annular second support plate,
• plural second blades having second one-side distal ends connected to the second support plate, and
• a second outer peripheral ring having a second ring portion that interconnects outer ends of the plural second blades adjacent second other-side distal ends of the plural second blades located on an opposite side of the second one-side distal ends,
• the first fan block and the second fan block being joined together,
• the second other-side distal ends of the plural second blades being Joined to the first support plate, and the first support plate and the second outer peripheral ring being disposed adjacent to each other,
• the first support plate having a down-step portion, and a section of the first support plate corresponding to the second outer peripheral ring being sunken below a section of the first support plate corresponding to an inner peripheral side of the second outer peripheral ring at the down-step portion, and
• the second outer peripheral ring entering the down-step portion, reducing a longitudinal direction thickness where the first support plate and the second outer peripheral ring lie on top of each other, and
• the down-step portion of the first support plate being sunken deeper than the longitudinal direction thickness of the second outer peripheral ring in the longitudinal direction.

A cross-flow fan that is made of resin, the cross-flow fan comprising:

• a first fan block including
• a disc-shaped or annular first support plate,
• plural first blades having first one-side distal ends connected to the first support plate, and
• a first outer peripheral ring having a first ring portion that interconnects outer ends of the plural first blades adjacent first other-side distal ends of the plural first blades located on an opposite side of the first one-side distal ends;
• and
• a second fan block including
• a disc-shaped or annular second support plate,
• plural second blades having second one-side distal ends connected to the second support plate, and
• a second outer peripheral ring having a second ring portion that interconnects outer ends of the plural second blades adjacent second other-side distal ends of the plural second blades located on an opposite side of the second one-side distal ends,
• the first fan block and the second fan block being joined together,
• the second other-side distal ends of the plural second blades being joined to the first support plate, and the first support plate and the second outer peripheral ring being disposed adjacent to each other, a gap being formed between the first support plate and the second outer peripheral ring, the gap being less than 1 mm, and
• the second other-side distal ends of the plural second blades of the second fan block project toward the opposite side of the second one-side distal ends from the second outer peripheral ring.