Conical air flow system
View Patent ↗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.
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; and
at 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; and
at 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; and
at 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.