Radial blower, especially for heaters or air conditioning systems in vehicles
First Claim
1. A radial blower, especially for heating or air conditioning systems of a motor vehicle, the blower comprisingdrive motor means having a back,a housing means having a back, said housing means accommodating the drive motor means,an air intake means provided in a front of the housing means,an air discharge means provided in a side of the housing means, anda fanwheel means adpated to be driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of which are connected with one another by means of a fan ring,spoke means for connecting the fan ring to the hub means,a plurality of spaced openings in the spoke means,the spoke means forming a bundle of parallel connected springs for flexing in a circumferential direction of the fan wheel,further openings in at least one of the back of the housing means and the drive motor means, the further openings having a predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air,the fanwheel means is formed as a one piece part of a plastic material, andthe spoke means have a greater radial and axial material thickness than a circumferential material thickness.
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Accused Products
Abstract
A radial blower, especially for heaters and/or air conditioning systems of motor vehicles. The radial blower including a housing having a front portion provided with an air intake opening and a back portion provided with discharge or exit openings. The housing is adapted to accommodate a drive motor for a fanwheel which is manufactured as a one piece plastic part. The fanwheel includes a fan ring with fan blades and a hub. A spacer is provided for connecting the fan ring with the fan blades. A spacer is provided with openings having spokes disposed therebetween. The spokes constitute a bundle of springs connected in parallel. Openings in a back portion of the housing and/or the drive motor have a limited cross section for drawing in a sufficient flow of cooling air.
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Citations
23 Claims
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1. A radial blower, especially for heating or air conditioning systems of a motor vehicle, the blower comprising
drive motor means having a back, a housing means having a back, said housing means accommodating the drive motor means, an air intake means provided in a front of the housing means, an air discharge means provided in a side of the housing means, and a fanwheel means adpated to be driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of which are connected with one another by means of a fan ring, spoke means for connecting the fan ring to the hub means, a plurality of spaced openings in the spoke means, the spoke means forming a bundle of parallel connected springs for flexing in a circumferential direction of the fan wheel, further openings in at least one of the back of the housing means and the drive motor means, the further openings having a predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air, the fanwheel means is formed as a one piece part of a plastic material, and the spoke means have a greater radial and axial material thickness than a circumferential material thickness.
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2. A radial blower, especially for heating or air conditioning systems of a motor vehicle, the blower comprising
a drive motor means having a back, a housing means having a back, said housing means accommodating the drive motor means, an air intake means provided in a front of the housing means, an air discharge means provided in a side of the housing means, and a fanwheel means adapted to be driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of which are connected with one another by means of a fan ring; -
a spacer means for connecting the fan ring to the hub means, a plurality of spaced openings in the spacer means, spoke means disposed between the respective openings forming a bundle of parallel connected springs for flexing in a circumferential direction of the fan wheel, further openings in at least one of the back of the housing means and the drive motor means, the further openings having a predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air, the fanwheel means is formed as a one piece part of a plastic material, characterized in that the spoke means have a greater radial and axial material thickness than a circumferential material thickness, and the spoke means extend axially over substantially an entire radial width of the fan ring.
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19. A radial blower, especially for heating or air conditioning systems of a motor vehicle, the blower comprising
drive motor means, a housing means having a back, said housing means accommodating the drive motor means, an air intake means provided in a front of the housing means, an air discharge means provided in a side of the housing means, and a fanwheel means formed as a one piece part of a plastic material and adapted to be driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of which are connected with one another by means of a fan ring, one row of spoke means for connecting the fan ring to the hub means, said row of spoke means forming a bundle of spring means flexible in a circumferential direction of the fan wheel, further openings in the back of the housing means, the further openings having predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air.
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20. A radial blower, for heating or air conditioning systems of a motor vehicle, the blower comprising
drive motor means, a housing means having a back, said housing means accommodating the drive motor means, an air intake means provided in a front of the housing means, an air discharge means provided in a side of the housing means, a fanwheel means driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of whih are connected with one another by means of a fan ring, means connecting the fan ring to the hub means for imparting flexibility in a circumferential direction therebetween to vibrationally decouple the fan ring from the hub means, further openings in the back of the housing means, the further openings having a predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air.
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23. A radial blower, especially for heating or air conditioning systems of a motor vehicle, the blower comprising
drive motor means having a back, a housing means having a back, said housing means accommodating the drive motor means, an air intake means provided in a front of the housing means, an air discharge means provided in a side of the housing means, and a fanwheel means adapted to be driven by the drive motor means, the fanwheel means comprising a hub means and fan blades, the axial ends of which are connected with one another by means of a fan ring, means for vibrationally decoupling the drive motor means and hub means from the fan ring and comprising spoke means solely for connecting the fan ring to the hub means, a plurality of spaced openings in the spoke means, the spoke means forming a bundle of parallel connected springs for flexing in a circumferential direction of the fan wheel to damp transmission of vibrations from the hub to the fan ring, further openings in at least one of the back of the housing means and the drive motor means, the further openings having a predetermined limited cross section for enabling a drawing in of a sufficient flow of cooling air, the fanwheel means is formed as a one piece part of a plastic material, and the spoke means have a greater radial and axial material thickness than a circumferential material thickness.
Specification