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US 10,760,799 B2Granted
Ultraviolet sterilizer and air conditioning apparatus using the same
AssigneeMitsubishi Electric Corporation
InventorsAkane Nomura, Akira Morikawa, Isamu Hirashiki, Junichiro Horiuchi
Life of this patent
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Abstract
An air-conditioning apparatus that conditions introduced air includes an ultraviolet sterilizer that emits ultraviolet ray to the air. The ultraviolet sterilizer includes a sterilizing light screen forming unit that forms a screen-shaped sterilizing light screen based on the emitted ultraviolet ray.
Claims18
An air-conditioning apparatus configured to condition introduced air, the air-conditioning apparatus comprising:
- a cylindrical casing including an inlet port through which air flows in and an outlet port through which the air flows out, the air passing through the cylindrical casing;
- an ultraviolet sterilizer configured to emit parallel ultraviolet rays to the air, the ultraviolet sterilizer including a sterilizing light screen forming unit configured to form a screen-shaped sterilizing light screen formed by the emitted parallel ultraviolet rays crossing with itself and emitted in a direction along a radial direction of the casing, the sterilizing light screen crossing an outflow direction from the inlet port to the outlet port;
- and
- a reflecting portion, whose cross-sectional shape is polygonal, configured to reflect the emitted parallel ultraviolet rays multiple times along the radial direction of the casing on a plane perpendicular to the outflow direction,
- wherein the reflecting portion includes a plurality of groups of reflectors that reflect the ultraviolet ray, the plurality of groups of reflectors are positioned adjacent each other along an inner circumferential surface of the cylindrical casing,
- wherein each group of reflectors includes a plurality of reflectors each having a reflecting surface that reflects the ultraviolet ray,
- wherein each projecting surface of the plurality of reflectors in a respective group of reflectors, projects inwardly from the inner circumferential surface at a same angle relative to the inner circumferential surface,
- wherein an orientation of the angle of the reflectors in each group changes between a respective group of reflectors and an adjacent group of reflectors along the inner circumferential surface,
- wherein the same angle within each of the group of reflectors is one of an upwardly sloping angle or a downwardly sloping angle, and
- wherein the sloping angle of the reflectors point both towards each other and away from each other in respective adjacent groups of reflectors of the plurality of groups of reflectors along the inner circumferential surface.
7 more elements
An ultraviolet sterilizer that sterilizes air with parallel ultraviolet rays, the ultraviolet sterilizer comprising:
- a cylindrical casing including an inlet port through which the air flows in and an outlet port through which the air flows out, the air passing through the casing;
- a sterilizing light screen forming unit configured to form a screen-shaped sterilizing light screen formed by the emitted parallel ultraviolet rays crossing with itself by emitting the ultraviolet ray in a direction along a radial direction of the casing, the light screen crossing an outflow direction from the inlet port to the outlet port;
- and
- a reflecting portion, whose cross-sectional shape is polygonal, configured to reflect the emitted parallel ultraviolet rays multiple times along the radial direction of the casing on a plane perpendicular to the outflow direction,
- wherein the reflecting portion includes a plurality of groups of reflectors that reflect the ultraviolet ray, the plurality of groups of reflectors are positioned adjacent each other along an inner circumferential surface of the cylindrical casing,
- wherein each group of reflectors includes a plurality of reflectors each having a reflecting surface that reflects the ultraviolet ray projects inwardly from the inner circumferential surface at a same angle relative to the inner circumferential surface,
- wherein an orientation of the angle of the reflectors in each group changes between a respective group of reflectors and an adjacent group of reflectors along the inner circumferential surface,
- wherein the same angle within each of the group of reflectors is one of an upwardly sloping angle or a downwardly sloping angle, and
- wherein the sloping angle of the reflectors point both towards each other and away from each other in respective adjacent groups of reflectors of the plurality of groups of reflectors along the inner circumferential surface.
6 more elements
Dependencies are inferred from the claim text.