Fan Assembly and Method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches. 1. A fan assembly comprising:a plurality of blades;an end ring connected to the plurality of blades;a hub ring connected to the plurality of blades, the hub ring having a split-ring configuration with ends of the hub ring rigidly fixed relative to one another; anda hub strip having a pair of end portions connected to the hub ring across a central opening of the hub ring from one another and a body portion intermediate the end portions.2. The fan assembly of further comprising another hub strip having end portions connected to the hub ring across the central opening from one another and a body portion intermediate the end portions.3. The fan assembly of wherein the hub ring and the end portions of the hub strip have generally flat configurations with the end portions overlapping the hub ring at the connections therebetween.4. The fan assembly of further comprising a hub connected to the body portion of the hub strip for connecting the hub strip to a motive source.5. The fan assembly of wherein the hub ring defines a plurality of slots sized to receive the plurality of blades.6. The fan assembly of further comprising another end ring connected to the plurality of blades claim 1 , the hub ring connected to the plurality of blades intermediate the end rings along the blades.7. A ...

Fan Assembly and Method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Fan Assembly and Method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Blower Assembly

In accordance with one aspect of the current disclosure, a blower assembly is provided that includes a housing having a pair of side walls and an outer wall connecting the side walls. The outer wall has a cutoff portion and an outlet portion. The housing includes an outlet defined at least in part by an outlet end of the outlet portion and the cutoff portion. The outer wall includes a scroll portion connecting the cutoff portion and the outlet portion. The outlet portion flares outwardly away from the cutoff portion as the outlet portion extends from the scroll portion to the outlet end of the outlet portion. 1. A blower assembly comprising:a housing having a pair of side walls and an outer wall connecting the side walls, the outer wall having a cutoff portion and an outlet portion;an outlet of the housing defined at least in part by an outlet end of the outlet portion and the cutoff portion;a scroll portion of the outer wall connecting the cutoff portion and the outlet portion; andthe outlet portion flaring outwardly away from the cutoff portion as the outlet portion extends from the scroll portion to the outlet end of the outlet portion.2. The blower assembly of claim 1 , wherein the outlet portion of the housing outer wall is substantially planar.3. The blower assembly of claim 2 , wherein the outer wall includes a scroll portion end between the scroll portion and the outlet portion claim 2 , the scroll portion end forming a transition from the curvature of the scroll portion to the outlet portion.4. The blower assembly of wherein the scroll portion has an inner radius that increases continuously as the scroll portion extends from the cutoff portion to the outlet portion.5. The blower assembly of wherein the scroll portion has a radius of curvature (RH) defined according to the following equation:{'br': None, 'i': RH=RW', 'K*L, '*(1+)'}wherein:K is the sine of a development angle in the range of 0.13 radians to 0.17 radians, 'RW is an outer radius of a fan for ...

Blower Assembly And Method

In one aspect, a blower assembly is provided having a housing and a cross flow fan rotatably mounted to the housing. Rotation of the fan drives fluid flow through the housing and produces an eccentric vortex of fluid flow in the housing. The fan has a circular blade support that induces fluid flow with rotation of the fan which interacts with the eccentric vortex. The circular blade support has at least one flow interrupter configured and arranged to rotate through the interaction of the eccentric vortex and the flow induced by the circular blade support to disrupt the interaction between the eccentric vortex and the flow induced by the circular blade support. In this manner, the at least one flow interrupter reduces the effect of the unstable vortex-blade support interaction on the airflow through the blower assembly which stabilizes the air loading on the blower assembly motor and reduces the noise. 1. A blower assembly comprising:a housing;a cross flow fan rotatably mounted to the housing with rotation of the fan driving fluid flow through the housing and producing an eccentric vortex of fluid flow in the housing;a circular blade support of the fan that induces fluid flow with rotation of the cross flow fan which interacts with the eccentric vortex; andat least one flow interrupter of the circular blade support configured and arranged to rotate through the interaction of the eccentric vortex and the flow induced by the rotating circular blade support and disrupt the interaction between the eccentric vortex and the flow induced by the rotating circular blade support.2. The blower assembly of wherein the circular blade support has a generally flat face producing a laminar boundary layer with rotation of the fan and the at least one interrupter breaks up the laminar boundary layer with rotation of the fan.3. The blower assembly of wherein the circular blade support includes a plurality of flow interrupters spaced apart about the circular blade support.4. The blower ...

Fan Assembly and Method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Blower assembly and method

In one aspect, a blower assembly is provided having a housing and a cross flow fan rotatably mounted to the housing. Rotation of the fan drives fluid flow through the housing and produces an eccentric vortex of fluid flow in the housing. The fan has a circular blade support that induces fluid flow with rotation of the fan which interacts with the eccentric vortex. The circular blade support has at least one flow interrupter configured and arranged to rotate through the interaction of the eccentric vortex and the flow induced by the circular blade support to disrupt the interaction between the eccentric vortex and the flow induced by the circular blade support. In this manner, the at least one flow interrupter reduces the effect of the unstable vortex-blade support interaction on the airflow through the blower assembly which stabilizes the air loading on the blower assembly motor and reduces the noise.

Blower assembly

In accordance with one aspect of the current disclosure, a blower assembly is provided that includes a housing having a pair of side walls and an outer wall connecting the side walls. The outer wall has a cutoff portion and an outlet portion. The housing includes an outlet defined at least in part by an outlet end of the outlet portion and the cutoff portion. The outer wall includes a scroll portion connecting the cutoff portion and the outlet portion. The outlet portion flares outwardly away from the cutoff portion as the outlet portion extends from the scroll portion to the outlet end of the outlet portion.

Fan assembly and method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Vorrichtung zum Transportieren eines Filmes durch die Bildbühne eines Stehbildprojektors

Fan assembly and method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Fan assembly and method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Blower assembly and method

In one aspect, a blower assembly is provided having a housing and a cross flow fan rotatably mounted to the housing. Rotation of the fan drives fluid flow through the housing and produces an eccentric vortex of fluid flow in the housing. The fan has a circular blade support that induces fluid flow with rotation of the fan which interacts with the eccentric vortex. The circular blade support has at least one flow interrupter configured and arranged to rotate through the interaction of the eccentric vortex and the flow induced by the circular blade support to disrupt the interaction between the eccentric vortex and the flow induced by the circular blade support. In this manner, the at least one flow interrupter reduces the effect of the unstable vortex-blade support interaction on the airflow through the blower assembly which stabilizes the air loading on the blower assembly motor and reduces the noise.

Fan assembly and method

In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.

Blower assembly and method

A blower assembly having a housing and a cross flow fan rotatably mounted to the housing. Rotation of the fan drives fluid flow through the housing and produces an eccentric vortex of fluid flow in the housing. The fan has a circular blade support that induces fluid flow with rotation of the fan which interacts with the eccentric vortex. The circular blade support has at least one flow interrupter configured and arranged to rotate through the interaction of the eccentric vortex and the flow induced by the circular blade support to disrupt the interaction between the eccentric vortex and the flow induced by the circular blade support. In this manner, the at least one flow interrupter reduces the effect of the unstable vortex-blade support interaction on the airflow through the blower assembly which stabilizes the air loading on the blower assembly motor and reduces noise.