Improvements in the Method of and the Apparatuses for Effecting a Continuous Circulation and Cooling of Cooling Liquids employed in Motors and Compressors.
Year: 1892

page_text: Date of Application, 12th Sept., 1892-Accepted, 22nd Oct., 1892
COMPLETE SPECIFICATION.
Improvements in the Method of and the Apparatuses for Effecting a
Continuous Circulation and Cooling of Cooling Liquids employed
in Motors and Compressors.
I, WILHELM MAYBACH of Cannstatt, in the Kingdom of Württemberg,
Empire of Germany, Engineer, 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 :-
My invention relates to an apparatus in which the vis viva of a liquid (generally
water) subjected to a rotary motion is utilized for raising this liquid into the part of
the machine where it is to be employed for cooling purposes. My invention also
consists in cooling this liquid hereafter by causing it to be rotated again in contact
with the atmospheric air, so that it may be used continuously for cooling purposes.
My invention further consists of means whereby the cooling effect may be improved,
and the water or other liquid prevented from splashing, as will be more clearly
described hereinafter, and pointed out in the claims.
My invention will be more readily understood by reference to the accompanying
drawings, in which:
Fig. 1 is a front elevation, partly in section, illustrating the principle of my
improved apparatus.
Fig. 2 is a sectional plan of the same.
Fig. 3 is a front elevation showing the application of my invention to a gas- or
petroleum-motor.
Fig. 4 is a side elevation of the same, partly in section.
Fig. 5 illustrates the application of my invention to a motor for boats and
launches.
Fig. 6 is a detail elevation, partly in section, of a contrivance for preventing the
water from splashing.
Fig. 6 is a plan view of the same.
Figs. 7 & 8 are a front elevation and a side elevation respectively of a con-
trivance for removing the vapours on the surface of the water.
Like letters of reference indicate corresponding parts throughout the several
views.
The principle of my invention is to lead the water or other liquid to be cooled
on a disc rotated by the motor or compressor, so that a high velocity is imparted
to said water, and the latter may thus be propelled to a certain height or distance.
The wind caused by the rotation of the disc simultaneously effects a cooling of the
water partly by direct action, by increasing the evaporation, and partly by indirect
action, by cooling first the rotating disc.
In the drawings A is the rotating disc, which may at the same time constitute
the fly-wheel of the engine. This disc is provided with a cylindrical rim A', at
the front end of which an annular disc A projects inwardly. B is the pipe through
which the water is fed to the inner circumference of A', the end of this tube being
curved in the direction in which the disc A rotates, and C is a pipe serving for
scooping the water aud conveying it to the place where it is to be utilized; the
end of this tube is curved opposite to the direction in which the disc A
rotates.
When the disc A is rotated in the direction indicated by the arrow, the water
supplied through pipe B and impinging on the rim A' of the disc A will assume
almost momentarily the velocity of the latter. After partaking of the rotation of
the disc A. for at least one revolution (in an apparatus constructed as shown) the

page_text: water will strike against the scoop-like end of pipe C and rise in the latter according
to the vis viva it has acquired. It will be obvious that this water is thoroughly
cooled by the wind produced during the rotation of the disc A, as thereby the
evaporation is facilitated, and the outer surface of the rim A¹ becoming cooled by
its swift rotation will contribute to reduce the temperature of the water contained
in the chamber formed by the disc A, rim A', and annular disc A². It will
be further obvious that the before described apparatus may be employed very
conveniently for forcing cooled water through pipe C into a serpentine pipe or any
other cooling apparatus, and for cooling this water again by causing it to flow back
through pipe B. Thus a very regular circulation of water and a most effective
cooling will be obtained. In order to improve the cooling effect of the rotating
disc A, the latter may be provided with wing or vanes, or its surface increased by
a suitable formation of the rim.
In Figs. 3 & 4 I have shown the practical application of my principle to a gas-
or petroleum-engine. A is the fly-wheel of the engine, and is constructed sub-
stantially as described with reference to Figs. 1 & 2. B is the pipe for supplying
water from a tank F, after opening the cock H. Ce is the delivery-pipe connected
with an annular space around the cylinder E of the engine. e is a pipe com-
pleting the circuit by connecting the said annular space with the tank F.
The operation of this apparatus is as follows: When the disc A is rotated,
and the cock H opened, the water rotating with the disc A will be scooped by the
end of pipe C and rise through the delivery-pipe c into the annular space around
the cylinder E. Here the water will cool the wall of the cylinder, and then flow.
into the tank F through the pipe e. From here the water will return to the rotating
disc A and after being cooled, as described, it will again rise in pipe C c.
continuous circulation of water and cooling of the cylinder E will be effected as
long as cock H is open and disc A continues to rotate. All complicate arrange-
ments for effecting a renewal of water are made dispensable, as the same water is
used over again.
Thus a
When wanting to stop the engine, the cock H is closed, so that the whole quantity
of water will be driven through the pipes C c and e into the tank F. In this
manner the stopping of the engine may be effected without any loss of water.
In Fig. 5 I have shown the application of my invention to an engine for boats
and launches. This is but a slight modification of the before described construction,
and is characterized by taking the feed-water supplied through pipe B directly from
the water in which the boat floats, thus dispensing with the tank F.
The pipe e
is of course likewise immersed in the water with its lower extremity.
The operation of this modification is substantially the same as above described,
with the only difference that the water entering through pipe B is continually
renewed, and the water escaping through pipe e is not used again. The fly-wheel
is in this case employed only for driving water up through the pipe C.
In Figs. 6 & 64 I have shown means for preventing the water from splashing
when scooped by the end of pipe C. This pipe is provided with a tapering
elongation in the direction in which the disc A rotates; the water in motion will
adhere to and glide along this elongation, and thus be prevented from splashing.
The means illustrated by Figs. 7 & 8 will improve the cooling effect of the
apparatus. It will be obvious that during the rotation of the disc A the air in
contact with the surface of the water to be cooled will become warm and saturated
with vapours, whereby the efficiency of the apparatus is impaired. In order to
obviate this, I arrange a scoop connected with a pipe, or a pipe without a scoop, as
close as possible to the surface of the water, as shown at K. I may of course employ
several pipes or scoops.
It will be understood that the pipe K will remove the
warm and moist air from the surface of the rotating water, so that fresh air will
have access to that surface; thus the evaporation and consequent cooling will be
increased.
The rotating disc A forming the main part of my invention may be employed as
a brake-disc. The water will absorb the heat produced by friction and thus

page_text: prevent the brake-disc from becoming too hot. This water may be cooled hereafter
by the rotation of the disc A and employed for cooling purposes as before described,
or drawn off directly through a waste pipe.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1. The method of effecting a continuous circulation and cooling of the cooling.
liquid in motors and compressors, consisting in rotating the receptacle containing
the liquid and utilizing the momentum imparted to the latter for driving it through
a continuous circuit, substantially as described.
2. In combination with motors and compressors, a rotatable disc having an
annular chamber formed on the inside of its rim, a stationary pipe for feeding a
liquid into said chamber, and a stationary pipe adapted to scoop the rotating
liquid and to convey it to the place where it is employed, for the purpose set
forth.
3. In combination with a motor, a fly-wheel A, having a rim A¹, and an annular
front disc A, a stationary pipe B for feeding water into the annular chamber
formed between the annular disc A2 and the fly-wheel A proper, a delivery-pipe C
adapted to scoop the rotating water and to convey it to a chamber surrounding the
cylinder, and a pipe e for conveying the water back to the place from which it is
taken, for the purpose described.
4. In combination with a motor, a fly-wheel A, having a rim A¹ and an annular
front disc A, a water-tank F, a cock H for letting the water out of the same, a
stationary pipe B for feeding water from tank F into the annular chamber formed
between the annular disc A³ and the fly-wheel A proper, a delivery-pipe C
adapted to scoop the rotating water and to convey it to a chamber surrounding the
cylinder, and a pipe e for conveying the water back into the tank F, substantially
as and for the purpose described.
5. In an apparatus of the kind described: The delivery-pipe C, having an end
acting as a scoop, and a tapering elongation i extending backwards, substantially
as and for the purpose described.
6. In an apparatus of the kind described: The rotatable disc A, constructed
substantially as described, in combination with the stationary feed-pipe B, the
stationary delivery-pipe C, and pipe or pipes K for scooping the vapours
and warm air on the surface of the water, substantially as and for the purpose
described.
7. Employing the rotatable disc A, constructed as described, as a brake-disc, for
the purpose set forth.
101
han 1000
WILHELM MAYBACH,
By Geo. H. Rayner,
37, Chancery Lane, London, W.C., Agent for the Applicant.