A ventilator for use in air-conditioning and refrigeration technology has a housing of plastic material in a one-part configuration having integrally formed therein an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor. A drive motor is arranged in the housing. An i
A ventilator for use in air-conditioning and refrigeration technology has a housing of plastic material in a one-part configuration having integrally formed therein an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor. A drive motor is arranged in the housing. An impeller wheel is rotatably supported about a central axis in the housing and driven by the drive motor. A protective screen is connected to the housing. A motor support is connected by the outlet guide vanes to the housing. The impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as flow elements (winglets). The flow elements are spaced at a minimal spacing relative to a sidewall of the housing. The drive motor is an external rotor motor that is embodied either as an alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC).
대표청구항▼
1. A ventilator for use in air-conditioning and refrigeration technology, the ventilator comprising: a one-part plastic housing comprising an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor, wherein the inlet nozzle, the cylinder-shaped flow guiding means, the ou
1. A ventilator for use in air-conditioning and refrigeration technology, the ventilator comprising: a one-part plastic housing comprising an inlet nozzle, cylinder-shaped flow guiding means, outlet guide vanes, and a diffusor, wherein the inlet nozzle, the cylinder-shaped flow guiding means, the outlet guide vanes, and the diffusor are together monolithically formed of plastic material;a drive motor arranged in the housing;an impeller wheel rotatably supported about a central axis in the housing and driven by the drive motor, wherein the outlet guide vanes are arranged downstream of the impeller wheel;a protective screen connected to the housing, wherein the protective screen is positioned downstream of the outlet guide vanes on the housing;a motor support connected by the outlet guide vanes to the housing;wherein the impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as winglets;wherein the winglets are spaced at a minimal spacing relative to a sidewall of the housing and said minimal spacing minimizes efficiency losses and noise development;wherein the drive motor is an external rotor motor that is embodied either an as alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC);wherein the outlet guide vanes are curved multi-dimensionally and each have a leading edge and a trailing edge;wherein the leading edge is crescent-shaped and the trailing edge is serrated or has a wavy shape;wherein the crescent-shaped leading edge is arranged in a direction opposite to a rotational direction of the impeller wheel. 2. The ventilator according to claim 1, wherein the housing has an uneven number of the outlet guide vanes. 3. The ventilator according to claim 1, wherein the housing together with the inlet nozzle, the cylinder-shaped flow guiding means, the outlet guide vanes, the motor support, and the diffusor is comprised of fiberglass-reinforced plastic material. 4. The ventilator according to claim 1, wherein the impeller wheel comprises a hub on which the vanes are arranged, wherein the vanes have a twisted or curved shape. 5. The ventilator according to claim 4, wherein the vanes each have a leading edge that is concavely shaped and in rotational direction is arranged advancing in a crescent shape. 6. The ventilator according to claim 4, wherein the vanes each have a trailing edge that is convex, serrated or of a wavy shape. 7. The ventilator according to claim 4, wherein the hub of the impeller wheel in flow direction is embodied to widen conically. 8. The ventilator according to claim 1, further comprising a motor connection box that is integrated on the housing downstream of the motor support. 9. The ventilator according to claim 1, wherein an interface of the motor support can be varied by shaping inserts to be inserted in an injection mold for the housing in that alternatively an interface for an AC motor or an EC motor is selected. 10. The ventilator according to claim 1, wherein an outer area of the inlet nozzle has fastening devices arranged about a circumference of the inlet nozzle. 11. The ventilator according to claim 10, wherein the fastening devices are bores. 12. The ventilator according to claim 1, wherein an outer shape of the inlet nozzle is round, square, or rectangular. 13. The ventilator according to claim 1, wherein the crescent-shaped leading edge is arranged slanted in a direction opposite to a rotational direction of the impeller wheel. 14. A ventilator for use in air-conditioning and refrigeration technology, the ventilator comprising: a one-part plastic housing comprising: an inlet nozzle;a cylinder-shaped flow guiding means adjoining the inlet nozzle;a diffusor adjoining the cylinder-shaped guiding means at an end of the cylinder-shaped flow guiding means opposite the inlet nozzle;outlet guide vanes connected to the diffusor at connecting locations;wherein the inlet nozzle, the cylinder-shaped flow guiding means, the diffusor, and the outlet guide vanes are together monolithically formed of plastic material;a drive motor arranged in the housing;an impeller wheel rotatably supported about a central axis in the housing and driven by the drive motor, wherein the outlet guide vanes are arranged downstream of the impeller wheel;wherein the cylinder-shaped flow guiding means has extensions circumferentially spaced apart and axially extending to the connecting locations of the outlet guide vanes within the diffusor;a protective screen connected to the housing, wherein the protective screen is positioned downstream of the outlet guide vanes on the housing;a motor support connected by the outlet guide vanes to the housing;wherein the impeller wheel has vanes with radially outwardly positioned vane ends, wherein the vane ends are embodied as winglets;wherein the winglets are spaced at a minimal spacing relative to a sidewall of the housing and said minimal spacing minimizes efficiency losses and noise development;wherein the drive motor is an external rotor motor that is embodied either an as alternating current asynchronous motor (AC) or an electronically commutated direct current motor (EC);wherein the outlet guide vanes are curved multi-dimensionally and each have a leading edge and a trailing edge;wherein the leading edge is crescent-shaped and the trailing edge is serrated or has a wavy shape;wherein the crescent-shaped leading edge is arranged in a direction opposite to a rotational direction of the impeller wheel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.