초록 ▼

A fragrance disperser includes a first source (25) of fragrance associated with a first flowpath (21) and a second source of fragrance (26) associated with a second flowpath (23). A fan (17) provides a flow of air along the first flowpath (21) or the second flowpath (23) to release the associated fr

A fragrance disperser includes a first source (25) of fragrance associated with a first flowpath (21) and a second source of fragrance (26) associated with a second flowpath (23). A fan (17) provides a flow of air along the first flowpath (21) or the second flowpath (23) to release the associated fragrance. A flow controller (38, 52) is movable by an actuator (34) to open and close the flowpaths (21, 23) so that only one fragrance is released at a time or a proportionate mixture of the two fragrances is released.

대표청구항 ▼

The invention claimed is: 1. A fragrance disperser comprising: first and second sources of fragrance, first and second flowpaths, each associated with a respective source of fragrance, a fan for providing a flow of air along the first and second flowpaths to release the associated fragrances, and a

The invention claimed is: 1. A fragrance disperser comprising: first and second sources of fragrance, first and second flowpaths, each associated with a respective source of fragrance, a fan for providing a flow of air along the first and second flowpaths to release the associated fragrances, and a flow controller separate from the fan and movable by an actuator between a first position in which air flows along the first flowpath to allow release of the first fragrance and a second position in which air flows along the second flowpath to allow release of the second fragrance, wherein the fan is within a housing and the housing includes a chamber housing the fan and first and second passages leading from the housing and forming respectively the first and second flowpaths. 2. A disperser according to claim 1 wherein the first and second flowpaths comprise respective first and second passages, the flow controller opening the first passage and closing the second passage in the first position thereof and closing the first passage and opening the second passage in the second position thereof. 3. A disperser according to claim 2 wherein the first passage has an inlet end adjacent the fan and the second passage has an inlet end adjacent the fan, the flow controller opening and closing said inlet ends. 4. A fragrance disperser comprising: first and second sources of fragrance, first and second flowpaths, each associated with a respective source of fragrance, a fan for providing a flow of air along the first and second flowpaths to release the associated fragrances, and a flow controller separate from the fan and movable by an actuator between a first position in which air flows along the first flowpath to allow release of the first fragrance and a second position in which air flows along the second flowpath to allow release of the second fragrance, wherein the fan is rotatable in respective opposite first and second senses, rotation of the fan in the first sense passing air through the first flowpath with the flow controller in the first position and rotation of the fan in the second sense with the flow controller in the second position passing air through the second flowpath. 5. A disperser according to claim 4 and comprising control means for controlling the actuator and the fan so that the flow controller is in first position when the fan rotates in said first sense and the flow controller is in said second position when the fan rotates in said second sense. 6. A disperser according to claim 4 wherein the fan is within a housing, the housing including a wall extending around the fan and defining a path for air leading to the first flowpath and the second flowpath, the flow controller including a flow directing surface which, in both the first position and the second position, provides a downstream extension of said housing wall. 7. A dispenser according to claim 6 wherein the fan has an outer periphery, the housing wall being arcuate about an axis co-axial with the axis of rotation of the fan, the flow directing surface being arcuate and forming, with the outer periphery of the fan, a passage of increasing cross-section in a downstream direction. 8. A dispenser according to claim 6 wherein the flow controller includes a first extension surface which forms a continuation of the first flowpath when the flow controller is in said first position and a second extension surface which forms a continuation of the second flowpath when the flow controller is in said second position. 9. A disperser according to claim 1 wherein the chamber includes an arcuate wall partially surrounding the fan, the arcuate wall having a first end and a second end, the first passage leading from the first end of the arcuate wall and the second passage leading from the second end of the arcuate wall. 10. A disperser according to claim 1 wherein the first and second passages are side-by-side in the housing. 11. A disperser according to claim 1 wherein the actuator is electronically operated. 12. A dispenser according to claim 1 wherein the flow controller in the first position prevents release of the second fragrance and in the second position prevents release of the first fragrance. 13. A fragrance dispenser comprising: first and second sources of fragrance, first and second flowpaths, each associated with a respective source of fragrance, a fan for providing a flow of air along the first and second flowpaths to release the associated fragrances, and a flow controller separate from the fan and movable by an actuator between a first position in which air flows along the first flowpath to allow release of the first fragrance and a second position in which air flows along the second flowpath to allow release of the second fragrance, wherein the flow controller is movable by the actuator to at least one position between said first and second positions to provide a proportionate increase of both fragrances. 14. A disperser according to claim 13 wherein said actuator is connected to the flow controller by a mechanism that translates operation of actuator into movement of the flow controller between said first and second positions. 15. A disperser according to claim 14 wherein the mechanism includes at least one arm connected between the flow controller and the actuator. 16. A disperser according to claim 15 wherein the actuator includes a rod movable between first and second positions to cause the at least one arm to move the flow controller between the first and second positions. 17. A disperser according to claim 16 wherein the at least one arm is pivotally mounted, movement of the rod rotating the at least one arm around the pivot. 18. A disperser according to claim 17 wherein the at least one arm has a first end and a second end, the first end being fixed to the flow controller and the second end being pivotally mounted, the rod acting on the arm intermediate the ends thereof. 19. A disperser according to claim 18 wherein the arm extends away from the fan in a generally radial direction. 20. A disperser according to claim 18 wherein the arm is pivoted to one side of the fan and the flow controller is on a diametrically opposite side of the fan, the arm extending across the fan. 21. A disperser according to claim 17 wherein the at least one arm has a first and a second end and is pivotally mounted intermediate the first and second ends, the first end being pivotally connected to the flow controller and the second end being pivotally connected to the rod. 22. A disperser according to claim 21 wherein the at least one arm extends away from the fan in a generally radial direction. 23. A disperser according to claim 16 wherein said at least one arm is one of two parallel arms, each arm having a first end and a second end, the first ends of the arms being pivotally connected to the flow controller and the second ends of the arms being connected to spaced fixed pivots, the rod acting on one of said arms. 24. A disperser according to claim 13 wherein the fan is within a housing, the housing including a chamber housing the fan and first and second passages leading from the housing and forming respectively the first and second flowpaths.