Improvements in Ventilating Apparatus.
Year: 1891

page_text: Date of Application, 10th Aug., 1891-Accepted, 31st Oct.. 1.91
COMPLETE SPECIFICATION.
Improvements in Ventilating Apparatus.
I, AUGUST RIEDINGER of Augsburg, Germany, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
This invention has reference to the construction and use in the manner herein-
after described of a special hood or cowl hereinafter termed an inflector with
movable flap valve designed to utilize for ventilating apartment and the like, a
current of air flowing under pressure along an air passage in communication with
the apartment to be ventilated, the said flap valve being connected with the cock of
one or more nozzles through which air, steam, or water under pressure can be
discharged from a supply pipe or conduit into the said air passage, the arrangement
being such that when the pressure of the air current flowing along the air passage
attains a certain degree, the flap valve will move and shut off the supply of fluid
under pressure from the said pipe or conduit to the air passage, and will also
prevent air flowing past the inflector acting inductively upon the air in the air
passage.
In the annexed illustrated drawing;
Fig. 1 is a longitudinal section and
Fig. 2 an elevation of my improved inflector.
Figs. 3 & 4 illustrate in front elevation and side elevation respectively an air
distributor employed in the ventilating arrangement.
Figs. 5 & 6 illustrate in longitudinal section and horizontal section respectively
an apartment with my improved ventilating apparatus arranged for ventilating the
same. S is the "inflector" constructed with two inlet branches and arranged to
project from the outer end of an air passage R within the wall of the apartment or
building to be ventilated, into the space whence the air for ventilation is to be taken.
This inflector is so arranged that an external current of air flowing say from left
to right (Fig. 5) will be forced to flow through the inflector in the direction of the
arrow (Figs. 1 & 5) and into the ventilating passage R. The suction or inductive
action of air flowing past the other inlet or rear branch, for the time being, of the
inflector is rendered inoperative by means of a flap valve K (Figs. 1 & 5) which
shuts off the said rear branch of the inflector S from the air passage R, and thus
allows only of the entrance of part of the external air current.
Within the ventilating passage R is arranged one or more nozzles D.connected
with a conduit for supplying fluid, for example air, steam, or water,under pressure, so
that, when required, compressed air, steam or water can be caused to enter the
passage R with great velocity. This fluid issuing from the nozzle or nozzles exerts
a strong sucking action upon the surrounding body of air so that a large quantity of
air will be caused to flow through the inflector S and into.the space to be ventilated
with a relatively small consumption of compressed air, steam or water.
When a strong external air current is flowing parallel to the outer wall of the
building and in the direction of one of the inlet branches, a considerable amount of
air will enter the inflector in the direction of the arrow; when this takes place the
aid of the nozzle or nozzles can be dispensed with.
In order in such a case to automatically shut off the supply of fluid under
pressure to the nozzle or nozzles, the flap valve K is provided with an arm or
crank i which is connected by means of a rod. to an arm or crank / fixed to the

page_text: cock H of the nozzle D the arrangement being such that the position of the flap
valve K regulates the exit of compressed air, steam or water from the nozzle, and
so that when, in consequence of a strong compressed air current, the flap valve K
has been moved into a position to close the communication between the air passage
and the rear branch, the cock H will be closed and thus cut off the supply of com-
pressed air through the nozzle or nozzles into the ventilating passage R.
When in
consequence of the pressure of the air current being weaker, the flap valve K
assumes by gravity a partly opened attitude, the cock H of the nozzle D will be
partially opened by means of the lever arrangement h.
In order to distribute the air flowing out of the ventilating passage R into the
apartment or space to be ventilated, there may be provided at the outlet of the said
passage a semi-circular shaped, or a quadrant shaped (Figs. 1 and 2) distributor V
provided with openings which are made smaller in the line or direction of the air
current, but are larger in directions inclined thereto, and especially perpendicularly
thereto, (see Figs. 2, 3 and 4).
In this arrangement, shown in Figs. 5 and 6, the distributor V is arranged
laterally of the left hand passage R, which at top is provided with the inflector.
The exit of the liquid or gas under pressure from the nozzle D can be regulated
by means of a cock L whilst the entry of the air from the air passage R into the
apartment U to be ventilated is controlled by means of a flap valve M, connected
to a rod N that can be operated by a hand lever O. Fresh air flows into the
apartment U through the passage R, and vitiated air flows out through the opposite
or right hand passage T. Within this passage T is a nozzle D' with regulating
cock through which fluid under pressure can issue in an upward direction for the
purpose of increasing the outflow of vitiated air.
The outflow of the vitiated air is regulated by means of a flap valve P operated
by a rod Q and adjusting lever W. The distributor V serves for summer venti-
lation. In ventilating in winter, the fresh air can be admitted by a horizontal
passage into a heater Z from which the warmed air can pass into the apart-
ment U. The horizontal passage is controlled by a flap valve y which is adjusted
by means of a rod y' and the lever O'.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The herein described arrangement for ventilating apartments and the like, com-
prising an inflector S formed with air inlet branches terminating in the external
atmosphere and in communication by an air passage with the said apartment, and
a nozzle D through which fluid under pressure can be injected into the said air
passage, the said inflector being provided with means whereby the inductive or
sucking action of air flowing past the rear branch, for the time being, of the
inflector is rendered inoperative upon the air in the air passage substantially as
herein before described.
2. In an inflector S of the kind referred to in the preceding claim a movable flap
valve K adapted to close the communication between the air passage to which the
inflector is applied, and the rearward branch for the time being of the inflector so
as to render the inductive or sucking action of air flowing past the rearward branch
inoperative, and a lever arrangement / connecting the said flap valve with a cock H
of a conduit, containing fluid such as air, steam or water under pressure, the
arrangement being such that when the flap valve is moved by an air current, in a
direction to close the said communication the cock H will be operated so as to
wholly or partially shut off the supply of compressed fluid to the said air passage
substantially as herein described.
3. The use in conjunction with the ventilating arrangement referred to in Claims 1
and 2, of an air distributor V formed with openings of various sizes, those in the
line of flow or direction of the air current being made smaller than those in a

page_text: direction perpendicular thereto for the purpose of uniformly distributing the air
current passing out of the ventilating passage substantially as herein described.
Dated this 10th day of August 1891.
A. RIEDINGER,
By L. W., per F. B.