1-12. (canceled)
13. A compound represented by any one of the following Structural Formulae 1B to 1H, 1J to 1M, 1P, 1R to 1T, and 1a to 1h, or a salt thereof:
14. The compound or salt according to claim 13, wherein the compound or salt is a compound represented by Structural Formula 1B or a salt thereof.
15. The medical composition for prevention or treatment of a protozoal disease, the medical composition comprising, as an active ingredient, the compound or salt according to claim 13.
16. The medical composition for prevention or treatment of a protozoal disease according to claim 15, further comprising chloroquine, mefloquine, artemisinin, atavaquone, pyrimethamine, suramin, pentamidine, melarsoprol, ascofuranone, benznidazole, pentostam, Amphotericin B, miltefosine, or fluconazole.
17. The medical composition for prevention or treatment of a protozoal disease according to claim 15, further comprising a medicinal carrier or a diluent.
18. The medical composition for prevention or treatment of a protozoal disease according to claim 15, wherein the content of the active ingredient in the medical composition is from 1 mg to 10,000 mg.
19. The medical composition for prevention or treatment of a protozoal disease according to claim 15, wherein the content of the active ingredient in the medical composition is from 10 mg to 3,000 mg.
20. The medical composition for prevention or treatment of a protozoal disease according to claim 15, wherein the medical composition is in the form of a liquid, tablet, or colloid.
21. A method of preventing or treating a protozoal disease, the method comprising administering, to a patient in need of prevention or treatment, a medical composition for prevention or treatment of a protozoal disease that includes, as an active ingredient, the compound or salt according to claim 13.
22. The method of preventing or treating a protozoal disease according to claim 21, wherein the active ingredient is represented by the following structural formula 1B:
23. The method of preventing or treating a protozoal disease according to claim 21, wherein the protozoal disease is malariosis, leishmaniasis, African sleeping sickness, Chagas disease, toxoplasmosis, lymphatic filariasis, babesiosis or coccidiosis.
24. The method of preventing or treating a protozoal disease according to claim 21, wherein the protozoal disease is malariosis, leishmaniasis, African sleeping sickness, or Chagas disease.
25. The method of preventing or treating a protozoal disease according to claim 21, wherein the medical composition further comprises chloroquine, mefloquine, artemisinin, atavaquone, pyrimethamine, suramin, pentamidine, melarsoprol, ascofuranone, benznidazole, pentostam, Amphotericin B, miltefosine, or fluconazole.
26. The method of preventing or treating a protozoal disease according to claim 21, wherein the medical composition further comprises a medicinal carrier or a diluent.
27. The method of preventing or treating a protozoal disease according to claim 21, wherein the content of the active ingredient in the medical composition is from 1 mg to 10,000 mg.
28. The method of preventing or treating a protozoal disease according to claim 21, wherein the content of the active ingredient in the medical composition is from 10 mg to 3,000 mg.
29. The method of preventing or treating a protozoal disease according to claim 21, wherein the medical composition is in the form of a liquid, tablet, or colloid.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An axial-flow fan comprising:
a fan housing including an air channel having an air discharge opening and an air suction opening,
an impeller having a plurality of blades and disposed inside the fan housing,
a rotor to which the impeller is fixed and which rotates about a shaft,
a stator disposed corresponding to the rotor,
a motor case including a bottom wall portion located at a side of the air discharge opening and a peripheral wall portion formed continuously with the bottom wall portion and extending toward the air suction opening, the stator being fixed to the bottom wall portion, and
a plurality of stationary blades disposed at intervals in a rotating direction of the rotor and located inside the air discharge opening of the air channel, each of the plurality of stationary blades connecting the motor case and the fan housing,
each of the plurality of stationary blades having an external end portion connected to an inner wall portion of the fan housing, an internal end portion connected to the peripheral wall portion of the motor case, a discharge-side edge portion formed between the external end portion and the internal end portion and located at a side of the air discharge opening, and a suction-side edge portion formed between the external end portion and the internal end portion and located at a side of the air suction opening,
each of the plurality of stationary blades being curved, in a convex manner, toward the rotating direction of the rotor,
all or most of stationary blades in the plurality of stationary blades being generally inclined so that the discharge-side edge portion of the stationary blade is located more forward than the suction-side edge portion thereof in the rotating direction,
wherein an inclination angle for all or most of the stationary blades in the vicinity of the external end portions thereof are larger than the inclination angle for all or most of the stationary blades in the vicinity of the internal end portions thereof, and the inclination angle is gradually changed from the vicinity of the external end portion toward the vicinity of the internal end portion; and
the inclination angle is defined as an angle between a virtual plane along the air discharge opening and a virtual line which passes through a first intersection where an orthogonal virtual plane, which is defined as being orthogonal to the virtual plane and also orthogonal to the discharge-side edge portion and the suction-side edge portion, intersects with the discharge-side edge portion, and also passes through a second intersection where the orthogonal virtual plane intersects with the suction-side edge portion.
2. The axial-flow fan according to claim 1, wherein the air channel has a cross-sectional shape, as taken in a direction where an axial line is a perpendicular line, which becomes larger toward the air discharge opening in an area from where the impeller exists to where the air discharge opening is located.
3. The axial-flow fan according to claim 2, wherein the inclination angle in the vicinity of the external end portion is within a range of 50\xb0 to 60\xb0, and the inclination angle in the vicinity of the internal end portion is within a range of 45\xb0 to 55\xb0.
4. The axial-flow fan according to claim 1, wherein one stationary blade among the plurality of stationary blades has a structure which receives therein a plurality of lead wires for supplying electric power to the stator, and the stationary blades other than the one stationary blade are the most of the plurality of stationary blades.
5. The axial-flow fan according to claim 1, wherein an outer surface of the bottom wall portion of the motor case is located closer to the air suction opening than the discharge-side edge portions of all or most of the plurality of the stationary blades are located.
6. The axial-flow fan according to claim 5, wherein the outer surface of the bottom wall portion of the motor case is composed of a flat bottom surface and an outer peripheral surface portion continuous with the flat bottom surface, and the outer peripheral surface portion is gradually curved from the bottom surface toward an outer peripheral surface of the peripheral wall portion.
7. The axial-flow fan according to claim 4, wherein all or most of the plurality of stationary blades each include an extended portion extending on the bottom wall portion of the motor case, and the extended portion has a guide surface for guiding a part of air flowing along the stationary blades toward the bottom surface of the bottom wall portion.
8. The axial-flow fan according to claim 7, wherein the extended portion further has an extended guide surface formed continuously with the guide surface and extending toward the rotating direction.
9. The axial-flow fan according to claim 5, wherein all or most of the plurality of stationary blades each include an extended portion extending on the bottom wall portion of the motor case, and the extended portion has a guide surface for guiding a part of air flowing along the stationary blades toward the bottom surface of the bottom wall portion.