초록

A cone-shaped air flow system has improved efficiency, increased plenum chamber exit air flow speeds and reduced noise levels in comparison to box-shaped and triangular air flow systems. The heater may be of half or full cone configuration for perimeter or central plenum locations, respectively.

대표청구항 ▼

1. An air flow system comprising: a housing having a half-cone shape and a base angle in a range of 40-80°;an air inlet port through a base of said housing;a fan inducing vortical air flow through said air inlet port into said housing; andat least one air exit port in a side wall of said housing, a

1. An air flow system comprising: a housing having a half-cone shape and a base angle in a range of 40-80°;an air inlet port through a base of said housing;a fan inducing vortical air flow through said air inlet port into said housing; andat least one air exit port in a side wall of said housing, a total area of said air exit ports being at least as great as an area of said air inlet port and a rotational area covered by blades of said fan, whichever is smaller. 2. An air flow system according to claim 1 having two air exit ports in said side wall of said housing. 3. An air flow system according to claim 2, said air exit ports being symmetrically spaced in said side wall of said housing. 4. An air flow system according to claim 3, said air exit ports having center lines spaced by approximately 90°. 5. An air flow system comprising: a housing having a full-cone shape and a base angle in a range of 40-80°;an air inlet port through a base of said housing;a fan inducing vortical air flow through said air inlet port into said housing; andat least one air exit port in a side wall of said housing, a total area of said air exit ports being at least as great as an area of said air inlet port and a rotational area covered by blades of said fan, whichever is smaller. 6. An air flow system according to claim 5 having three air exit ports in said side wall of said housing. 7. An air flow system according to claim 6, said air exit ports being symmetrically spaced at 120° intervals in said side wall of said housing. 8. An air flow system comprising: a conical housing having a base angle in a range of 40-80°;an air inlet port through a base of said housing;a fan inducing vortical air flow through said air inlet port into said housing; andat least one air exit port in a side wall of said housing, a total area of said air exit ports being at least as great as an area of said air inlet port and a rotational area covered by blades of said fan, whichever is smaller. 9. An air flow system according to claim 8, said air exit ports being symmetrically spaced in said side wall of said housing.