REGISTER WITH INJECTOR NOZZLE

REGISTRE A BUSE D'INJECTION

English Abstract

A register of a forced air system to include an injector and a damper switch to
regulate a thermostatic element for heated - and air-conditioned airstreams. A
direct drive mechanism to allow the thermostatic element to control the
movement of a sliding grill.

French Abstract

Cette invention concerne un registre pour circuit à air pulsé comportant une commande d'injecteur et de positionnement des lattes servant à réguler le fonctionnement d'un élément thermostatique de circuit de chauffage et de conditionnement d'air. L'objet de l'invention comporte aussi un mécanisme d'entraînement direct permettant à l'élément thermostatique de régler le déplacement d'une grille coulissante.

Claims

The embodiments of the invention in which an exclusive property or privilege
is claimed are defined as
follows:
1. A heating and cooling register for admitting forced air into the room from
a forced air system,
comprising:
a housing, said housing defining a top flanged having an opening disposed
generally centrally
therein;
a first plurality of elongated ribs extending parallel to each other across
said opening and
spaced apart from each other to define spaces therebetween, each rib having a
bottom edge;
a second plurality of elongated ribs extending parallel to each other and
spaced apart from each
other to define spaces therebetween; said second elongated ribs being disposed
adjacent said
bottom edge of the first elongated ribs, means for sliding said second
elongated ribs with
respect to said first elongated ribs for opening and closing said opening;
said means for sliding including a lever assembly pivotably attached to said
second elongated
ribs for the movement thereof, said lever assembly being L-shaped with a long
arm and a
short arm, said lever assembly being pivotably attached to the housing at the
junction of the
L-shape, and actuating means for moving said second elongated ribs via said
lever assembly,
said actuating means being a thermostatic element having it plunger for
engaging said short
arm, said long arm being pivotably attached to said second elongated ribs; and
means for alternatively supplying said forced air, room air, or forced air and
room air to said
thermostatic whereby the flow of air through said opening is controlled.

Description

21 98642
REGISTER WITH INJECTOR NOZZll,E
BACKGROUND OF THE INVENTION
This invention relates to floor registers for forced air systems.
U.S. Pat. No. ~,472,380 to Sarazen describes a floor register with a filter. The
puIpose of that invention is to integrate an installation of a detachable filter
element with easy access. That invention relates to a register controlled by a
manually operated sliding grill disposed beneath the top grille. The sliding grill
is configured with widthwise vanes and lengthwise ribs that are complementary
to the vanes and ribs of the top grille. When designing a self regulating register
for air systems much attention is given to the closing and opening mechanisms.
The sliding grill has the advantage of being an effective short stroke opening and
closing device, since the thermostatic element which is used in this self regulated
register produces only relative small strokes.

21 98642
SUMMARY OF THE INVENTION
The present invention solves the problem existing with a self regulated floor
register operated by a thermostatic element. The air which represents the room
temperature is no~nally not able to reach the therrnostatic element inside a floor-
register assembly. This invention incorporates an injector nozzle, wllich sucks
in air from a room which represents the room temperature to allow the
therrnostatic element to be effectively exposed to the temperature of the
surrounding room. The opening and closing position of the sliding grill does not
influence the function of the injector nozzle in this invention. The other aspect
of this invention is to allow the self regulated floor register to work as well on
heated pressurized air and/or on pressuIized air conditioned air. A damper
switch redirects pressurized cool air conditioned air into the direction of the
therrnostatic elernent and lowering the temperature around the thermostatic
element; pretending a "cold" room temperatllre and forcing the floor register to
stay open. If the damper switch is left in a position somehow halfway between
"heating-only" and "air condition-only" the air surrounding the thermostatic
element will get a mixture out of room air and forced air condition air, allowing
the floor register to reduce the pressurized air condition output. The field of art
to which the invention applies is also related to the mechanical drive to allow a

- 21 98642
thermostatic element with a relatlve small out-put stroke to drive a lever a~n
assembly giving a sliding grill enough movement to open and close a floor
register within the nonnal room temperature range.

2 1 98642
BRIEF DESCRIPT~ON OF THE DRAWINGS
FIG. 1 is a cross sectional view of the register in which the arrows
9 - 9 point in FIG. 6.
FIG. 2 is a cross sectional view of the register for the damper switch in an
air condition position in wllich arrows 9 - 9 point in FIG. 6.
FIG. 3 is a cross sectional view of the register for the damper switch in a
half open position in which the arrows 9 - 9 point in FIG. 6.
FIG. 4 is a cross sectional view of two dif~erent injector nozzles.
FIG. S is a plan view of the driving mechanism for the thermostatic element
movement.
FIG. 6 is a top view of tlle floor register.

21 9864~
DESCRIPTlON OF ll'HE PREFERRED EMBODIMENT
Referring to Fig. 1 there is shown a cross-sectional view of a register 10 with a
frame 12, and an outer flange 11 where pressurized air 25 either heated or cooled
by air condition passing through an assembly of a slide grille 15 and a grill 13
with a rib 14. The discharge air 28 is mixing with room air 29 above register
5 10. A dial knob 16 has in its lower part vent holes 19 to carTy a thelmostatic
element 18 which pushes on to a compression spring 20. If the therrnostatic
element 18 expands over its lirnit an override spring 21 is protecting the
thermostatic element from internal damage. To ensure that the lever assembly
33 is touching the plunger 36 in FIG. 5 a return spring 22 is pulling the slide
l0 grille 15 between the ridge 23 and the rib 14 against the frame 12. A damper in
closed position 44 is allowing the room air 29 to pass through an intake opening
30 to reach a suction air charnber 26 where the thennostatic element 18 is
located. As shown in FIG. 2 the damper in open position 45 is allowing
pressurized air 25 in this case cool air conditioned air to reach suction chamber
15 26. The damper switch 17 is rotating around an axle 24 which is part of the
frame 12 with the outer flange 11. Afl[er the air leaves the suction chamber 26 it
rnixes with pressurized air 25 and is discharged at discharge air 28 on the upper

21 98642
side of flange 11. FIG. 3 shows the damper switch 17 in the regulating position
46. Suction chamber 26 is feeding from pressurized air 25 which is cool air
conditioned air and warmer room air 29 at the sarne time to allow thermostatic
element 18 to cool below room air 29 and forces the slide grill 15 in FIG. 1 to
s open. The damper switch 17 in open position 45 in FIG. 2 allows only cooled
pressurized air 25 to reach the suction chamber 26 so that the theImostatic
element 18 is exposed to an air temperature di~erent from room air 29. As
shown in ~IG. 4, two di~erent types of injector nozzles 41 and 42 are part oi
register 10 in FIG. 1-3 define the cross sectional shape of the injector 27 and 43
o along arrows 9 - 9 in FIG. 6. The injector nozzle 41 discharges suction air 26
in a parallel stream together with the pressurized air 25 into the injector 27 and
then discharges the air into the discharged opening 31. The injector nozzle 42
discharges suction air 26 in an angle into the stream of pressurized air 25 at the
injector 43 and together discharges the mixed air into the discharge opening 31.
s As shown in FIG. S thermostatic element 18 is puslling on a plunger 36 with
axis 38 which incorporates an override spring 21 and is surrounded by a
compression spring 20 which produces a powerful return force to control the
movements of thermostatic element 18. The plunger 36 tilts against a short arrn
lever 34 of lever assembly 33 which pivots around lever pivot 37. The long arm

: 21 98642
lever 35 is also part of lever assembly 33 and is connected to link 36 in liIlk pivot
39. Link 36 is attached in grill pivot 40 and to grill 13 with its retu~n spring 22
which is ~xed to frame 12. As shown in FIG. 6 and FIG. 1-3 register 10 has
an outer flange 11 aIld a frame 12. As shown in FIG. 6 arrow 9-9 gives the
5 cross-sectional view for FIG. 1-3. FIG. 6 shows the location of the
temperature marker 48 around dial 16 and the damper handle 47 with the damper
marker 49. As show in the FIG. 1 and 6 intake opening 30 is placed in
distance to discharge opening 31 and discharge air 28.

Representative Drawing