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Патент USA US2127880

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Aug. 23, 1938.
c. A. MEDSKER
2,127,380
APPARATUS FOR THE PRODUCTION OF coMBUsTIBLE GAS
Filed March 28, 1954
2 Sheets-Sheet 1
ATTORNEYJ,’
Aug. 23, 1938.
c. A. MEDSKER
2,127,330
APPARATUS FOR THE PRODUCTION OF COMBUSTIBLE GAS
Filed March 28, 1954
2 Sheets-Sheet 2
ATTORNEY‘);
Patented Aug. 23, 1938
'~ 2,127,880
UNITED STATES PATENT OFFICE
2,127,880
APPARATUS FOR THE PRODUCTION
COMBUSTIBLE GAS
Charles A. Medsker, Cleveland Heights, Ohio,
‘
assignor to The Ferrolene Oxygen Co. of Ohio,
Cleveland, Ohio, a corporation of Ohio
Application March 28, 1934, Serial No. 211,871
3 ‘Claims. ((21. 48-93)‘
vThe presentinvention relating as indicated to
e
a method of and apparatus for producing gase
' ous mixtures,.is more particularly directed to a
new and improved- method and apparatus for
5 the production of a mixture consisting of a true
gas, and a vapor produced by the evaporation
duce a ?nal mixture ‘of the same content. Fur
ther di?lculties are experienced in maintaining
constant temperatures in the conduits to prevent
unequal condensation. at ‘different points._
, In the present method and apparatus, I have
devised a system for producing a constant mix
- of a‘ liquid fueli-to’produce ajcombustible gas
ture of the type described which is relatively
capable of burning at a high temperature for
stable and in which the content can be con’
‘ use in the welding and cutting of metal. A fur~ ‘
trolled and proportioned accurately regardless of
~ _10
ther object of the‘ invention is the provision of
rate of production and use.
apparatus for continuously producing a combus
In Fig. 1, I have shown one apparatus em
bodying my improved invention which consists
of a mixing tank I provided with a mixing tube
tible mixture ’of the character described of ?xed
composition regardless ofthe volume‘ in which
the mixture‘ isproduced and drawn on.‘
.To' the accomplishment of the foregoing and
related ends, the invention, then, comprises the
2 therein, through which the‘ mixture may be
forth in detail certain illustrative embodiments
drawn and discharged into the conduit 3 which
is provided with a control valve land may be
connected to any suitable torch or burner. The
basic gas which forms the major portion of the
mixture isintroduced into the chamber I through
a conduit 5 and how throughthis conduit is con
of the invention,-t_hese being indicative, however,
trolled by means'of a manual valve 6, and an au
of but a few of‘the various ways in which the
tomatically controlled valve ‘I. The conduit is
also supplied with gauges 9 and ill to allow the
operator to determine the pressures which exist
and, make adjustments to secure the desired con
trol. The enriching liquid is contained in a tank
i5 provided with a gauge glass It and is carried
through a conduit l'l provided with a strainer l8
features hereinafterwfully described, and partic
ularly pointed out in the claims, the following
description and the annexed drawings setting
principle of the invention may be employed.
In said annexed drawings:-~ '
Fig. 1 is a side elevation partially in section
and more ‘or less diagrammatic in character of
one form of my improved apparatus, and Fig. 2
is a similar view-v showing a modi?cation of the
same.
,
It has been found that any combustible gas,
such as ordinary natural or arti?cial heating
gas, can be enriched by the addition of vapors of
liquid fuels thereto, such for example as vapors
of liquid hydrocarbons, to produce a combustible
mixture having a combustion temperature adapt
ing it for the welding and cutting of metal, and
gases of this character are now‘ in general use,
resulting .in large savings in cost over the or
dinary commercial welding and cutting gases
such for example as acetylene and the like. It
is a simple matter to enrich the ordinary arti
10
and a pressure gauge II and controlled by an au
tomatic valve l9, presently to be. described, into 30
the chamber I and discharged into a shallow
cup or pan 20 and there vaporized by means of
heat supplied below the cup through an elec
trical heating unit 2| mounted in an enclosing
casing 22 ?xed to the end or head 23 of the
chamber I. The gas-introduced through~;ithe con
duit 5 is led through the chamber l‘and ‘dis
charged upwardly through the end 3|! of said
conduit, and thereby caused to flow around and
over the cup 20 in which the enriching liquid is
continuously vaporized by means of the heat "
?cial or natural heating gas by the ‘addition applied thereto from the heating coil. The result
is that the gas issuing from the conduit 30 car
ries up the vaporized liquid, mixes with the same,
gas is fairly constant, and also so long as the and ?lls the interior of the chamberv I from
mixture so‘ produced is used relatively close to the ,sawhichhthis mixture is then drawn off through the _
point of production. It has been found,.how-~ passage 2, which in order to secure better mix
ever, that in installing a system of this type in ing by the gas and vapors may be ?lled with
a ‘factory and-providing outlets at'points spaced brass shavings or similar material. Air may be
50 a considerable distance from each other, it'is introduced into the gas entering at conduit 5 I
or may be subsequently supplied "and mixed with
very di?icult to prevent condensation of the va
‘porized liquid in the conduits extending from the mixture in or at the burner which is not
the source of production to the point of use, shown.
audit is also di?icult to regulate accurately the
In operation, the pressure existing in the dis
charge line 3 is caused to operate a pressure- 55
55 amount of liquid introduced into the gas to pro
thereto of a predetermined amount of an atom
ized‘liquid-so long as the rate of production of the
2
2,127,880
controlled electrical switch which is 01' standard
construction and is indicated diagrammatically
at 40. Excess pressure in the conduit 3 operates
a diaphragm which will close the circuit, causing
current to flow through wires 4| to actuate a
solenoid 42 which is connected to the valve ‘1
the pressurestat or thermostat ‘II. A conduit 12
is connected to the vapor side 01' the heating
chamber 61 and leads to the line regulator valve
13 and thence through the conduit 14 and orifice
15 to the mixing chamber ‘I6. A conduit 11 also
connects the vapor sides of the chambers 60 and
62 to the upper portion of the heating chamber
61. The arti?cial or natural gas is conducted
into the apparatus by means of the conduit 18,
in the gas inlet line 5. An excess of pressure
over that for which the device 40 is set will close
the valve 1, reducing the flow of gas into the
10 chamber I and thereby reducing the pressure in
through the line regulator 19 and thence to the 10
that chamber and consequently in the discharge
mixing chamber ‘I6.
conduit 3. In this way, substantially constant
pressure can be maintained in the discharge con
duit and hence at the burner or tip.
Operation of the switch contained in the con
ducted from the mixing chamber 18 out through
the conduit 80 to a burner or torch (not shown).
In operation, the above described form of appa
ratus first vaporizes the liquid by means of the
heating unit 69 and incidentally creates a vapor
pressure, due to the fact that the entire system
trol device 40, by means of wires 43 and the sole
noid 44, also operates a second electrically con
trolled valve IS in the liquid line. This valve is
similar in construction and operation to that
20 shown in section in the conduit 5, and thus the
flow of both gas and liquid is simultaneously and
accurately controlled and proportioned to the
pressure which it is desired to maintain in the
discharge line 3.
In order that the liquid will ?ow into the mix
25
ing chamber I, it is of course necessary that the
pressure in the conduit I‘! be slightly greater
than the pressure in the interior of the chamber
1. The pressure in the interior of the chamber
30 i is in turn dependent upon the inlet gas pres
is atmospherically sealed, against the line regu
lator valve 13. The pressure limit of the line
regulator valve 13 and also of the gas line regu 20
lator valve 19 is set at a predetermined value,
and therefore both the vaporized liquid fuel and
the gas will be supplied to the mixing chamber
at constant pressures, and correspondingly at
constant velocities. Therefore, the proportions
of the constituents of the resultant mixture will
remain constant regardless of any ?uctuation in
the rate of flow or pressure in the burner con
necting conduit 80.
It is also desirable to maintain a substantially 30
constant temperature in the chamber I, and I
employ a thermostat 50 mounted in this chamber
and adapted to actuate a mercury switch 5| which
in turn controls the circuit extending to the
sure from the conduit 5. Therefore, in order to
maintain such a slight excess of pressure in the
liquid feed line H, the following apparatus is
provided. A connecting conduit 45 leads from
35 the upper or vapor side of the liquid chamber
I5 to the line pressure regulator 46, the detailed
construction of which is well-known in the art.
heater II in the tank, and closing or opening the '
circuit, depending upon the temperature for
which the thermostat is set.
Other forms may be employed embodying the
Suffice it to say that the regulator 46 serves as
a means for equalizing, up to a predetermined
features of my invention instead of the one here
limit, the pressure in the conduit 45 to that in
the interior of chamber i, and accordingly, the
pressure on the vapor side of the liquid chamber
IS. The liquid chamber I5 is positioned at a
higher level than that of the mixing chamber l
and accordingly there will result a hydrostatic
pressure su?icient to force the liquid through the
conduit l1 and into the mixing chamber I.
In the form of construction shown in Fig. 2,
in explained, change being made as regards the
means and the steps herein disclosed, provided
- the elements stated by any of the following claims
or the equivalent of such stated elements be em
ployed, whether produced by my preferred
method or by others embodying steps equivalent
to those stated in the following claims.
I therefore particularly point out and distinctly
claim as my invention:—
it is contemplated that the enriching liquid will
be first vaporized before its admixture with the
1. In apparatus of the character described, the
combination of a mixing chamber, a conduit for 50
gas. The form of construction shown in Fig. 2
and now to be described is less expensive than
introducing an enriching hydrocarbon liquid
thereinto, a control valve in said conduit, means
in said chamber for vaporizing said liquid, a sec
ond conduit for passing a stream of combustible
gas into said chamber, a control valve in said 55
second conduit, means for removing the mixture
that shown in Fig. l, in that the large mixing
chamber i and the solenoid valves ‘I and I! are
eliminated. "
The mixed gases are con
I
Now referring more particularly‘ to Fig.2, the
enriching liquid is contained in ‘a chamber 60.
A sight glass Si is provided on the chamber 60
to enable a visual inspection of the quantity of
60 liquid contained therein. A second chamber 62
of gas and vaporized liquid from said chamber,
and a master control simultaneously regulating
both of said control valves and thus regulating
the flow of said liquid and said gas into said
serves as a main supply chamber. The upper
or vapor sides of the chambers 60 and B2 are
chamber, said master control regulating said flow
of gas and said flow of liquid in direct pro
portion to the rate of removal of said mixture
connected by means of the conduit 63. The
lower or liquid side of the chamber 62 and the
65 vapor side of the chamber 60 are connected by
means of the conduit 64'. A ?oat 65, in the
chamber 60 actuates the needle valve 66 in the
introducing an enriching hydrocarbon liquid
lower end of the conduit 64 and serves as a means
thereinto, a control valve in said conduit, means
for maintaining a constant liquid level in the
70 chamber 60. The liquid from the chamber 60
communicates with the heating chamber 61 by
means of the connecting conduit 68. An electric heating unit 59 is positioned on the interior
of the heating chamber 61 and is energized by
76 means of the connecting wires 10 which lead to
for heating the said liquid to a vaporizing tem
perature, means including a conduit for passing
therefrom.
2. In apparatus of the character described, the
combination of a mixing chamber, a conduit for
a stream of combustible gas over such liquid, a
,
control valve in said second conduit, means for
removing the mixture of gas and vaporized liquid
from said chamber, and a master. control simul
taneously regulating both of said control valves 15
2,127,880
3
combination of a mixing chamber, a conduit for
for passing a stream of combustible gas over the
heated liquid in‘said chamber, a control valve
in said second conduit, means for removing the
mixture of gas and vaporized liquid from said
chamber, and a master control simultaneously
regulating both of said control valves and thus
regulating the rate of ?ow of said liquid and of
introducing an enriching hydrocarbon liquid
said gas'into said chamber, said master control
and thus regulating the rate of flow of said liquid
and of said gas into said chamber, said master
control regulating said ?ow of gas and said ?ow
of liquid in direct proportion to the rate of re
moval of said mixture therefrom.
3. In apparatus of the character described, the
thereinto, a control valve in said conduit, means
10 for heating said liquid in said chamber at a rate
proportioned to the rate of withdrawal of gas
from. said chamber, means including a conduit
regulating said ?ow of gas and said ?ow of liquid
in direct proportion to the rate of removal of 10
said mixture therefrom.
CHARLES A. MEDSKER.
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