close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2128937

код для вставки
Sept. 6, 1938.
2, 1, 28,937
W. B.’ HALE
LONG STROKE HORIZONTAL TYPE AIR COMPRESSOR
Filed March 17, 1936
3 Sheets-Sheet l}
J5
IIVENTOR.
‘ 1
ATTORNEYS
Sept. 6, 1938.
w. B. HALE
2,128,937
LONG- S'I'ROKE HORIZONTAL TYPE AIR COMPRESSOR
Filed March 17, 1936
3 Sheets-Sheet 2
(—|—\q
BY
5%
M
,
A'r'roRNEYs
Sept. 6, 1938.
w. B. HALE‘
2,128,937
LONG STROKE HORIZONTAL TYPE AIR ‘COMPRESSOR
Filied March 17, 1956
-
6
v
59
\ n\:n
‘I
:1
'
m
40
,
s Sheets-Sheet 5
41
1
rrk-?Tn
\1’
h
.
V
z\
_
<-—
5
20
22
-
4»
L
.
‘é
/
"
,5
94
‘20
fa‘?
PM kuxm v"
I
2,128,937
Patented Sept. 6, 1938
UNITED STATES PATENT OFFICE
2,128,937
LONG STROKE HORIZONTAL TYPE AIR
COMPRESSOR
William B. Hale, Huntington Park, Calif., as
signor to New Type Air Compressor Company,
Huntington Park, Calif., a corporation of Ne
vada
Application March 17, 1936, Serial No. 69,312
15 Claims. (Cl. 230-185)
This invention relates to gas compressors, and
while the invention may be embodied in machines
for compressing gases for any purpose whatever,
in the present speci?cation the invention is de
5 scribed as applied to an air compressor, and par
ticularly to a multiple-stage or two-stage com
pressor of the reciprocating type.
Most compressors of the reciprocating type
operate at high piston speed, and have a rela
10 tively short stroke. As there is a limit to speed
at which air will flow into the compression cylin
der, due to the high speed of the piston there is
insufficient time permitted for the cylinder to re
ceive a full charge of air at atmospheric pressure
.before the piston commences its return stroke to
compress the charge. This occasions a loss in
e?iciency. Furthermore, air in being com
pressed becomes heated, and in a high speed
compressor very little time elapses in each com
:20 pression stroke, so that there is little time for
the air being compressed to be cooled. In the
operation of two-stage or multiple-stage com
aligned cylinders, and these cylinders are pref- '
erably of di?erent diameters, the larger cylinder
being employed in the ?rst-stage of the com
pression, while the smaller cylinder is employed
in the second stage.
Between these cylinders a
long-stroke chain drive is employed with means
for driving the chain through the medium of a
small motor such as an electric motor.
One of
the objects of the invention is to provide simple
means for mounting the endless chain or chains
of the drivingapparatus for reciprocating the
cross-head to which the piston rods are attached,
and to provide simple means for enabling ad
justments of the standards or bearings for the
sprocket wheels that support the chains, to be
effected.
The compressor is preferably of the horizontal
type, the cross-head being provided with a ver
tical slot which is driven by a wrist carried on
the endless chain drive; and one of the objects
of the invention is to provide an improved con
struction for the driving wrist of the cross-head,
and improved means for connecting it to the
pressors heretofore, it has been the practice to
provide inter-coolers for cooling the air between
the compression stages, and this is usually ac
driving chains.
complished by circulating the air through metal
coils such as copper coils surrounded with circu
the general construction of two-stage air com
pressors of a horizontal reciprocating type.
lating water.
One of the objects of the present invention is
hereinafter.
30 to provide a gas compressor or air compressor
A further object of the invention is to improve
'
Further objects of the invention will appear
The invention consists in the novel parts and
of simple construction, having a relatively long
combination of parts to be described hereinafter,
stroke as compared with the diameter of the cyl
inder in which the gas or air is compressed, and
capable .of operating at a relatively slow piston
35 speed, allowing more time to be consumed on the
intake stroke of the piston, to the end that the
cylinder will be fully charged with air at substan
.all of which contribute to produce an ef?cient
tially atmospheric pressure before the compres
sion stroke begins.
_
Furthermore, compressors of the reciprocat
40
ing type that operate at a relatively high piston
speed, have a relatively low e?iciency due to the
relatively great number of strokes of the piston,
for the reason that the effects of the fraction
representing the volumetric efficiency becomes '
J multiplied. One of the objects of this invention
is to produce a compressor of this type that will
overcome this objection.
A further object of the invention is to provide
50 simple means for cooling the compression cylin
ders, and for cooling the air between the com
pression stages without necessitating the use of
circulating water, or fan.
In its preferred ‘construction the compressor
;)5 involves the use of two oppositely disposed
long stroke horizontal type air compressor.
A preferred embodiment of the invention is de
scribed in the following speci?cation, while the
broad scope of the invention is pointed out in
the appended claims.
In the drawings:
Figure l is a side elevation of an air com
pressor embodying my invention, and also illus
trating the air tank connected up to the com
‘pressor to be charged with air.
Fig. 2 is a plan of the compressor illustrated
in Fig. 1, but with the motor omitted.
Fig. 3 is a vertical section through the com
pressor taken about on the line 3-3 of Fig. 4.
Fig. 4 is a horizontal section taken through the
compressor on the line 4—4 of Fig. 3; in this view
certain parts are broken away, and the inter
cooler is represented also in longitudinal section.
Fig. 5 is a vertical cross-section taken about on
the line 5—5 of Fig. 3 but upon an enlarged scale,
and particularly illustrating the mounting for the
driving mechanism of the compressor.
Fig. 6 is a side elevation of the assembly of parts 55
‘2,128,937
to be connected as one piece, into the endless chain
or chains of the compressor, for driving the cross
head.
the shafts 33 of sprocket wheels 34 that carry the
sprocket chains 2|. The standard bearings 24 are
preferably held in a ?xedposition while the stand
ards 31 are preferably mounted for adjustment to
Fig. 7 is a cross-section taken on the line T—‘| of
enable the slack of the chains- 2! to be taken up as
Fig. 6, and further illustrating details of the con
struction of this Wrist. This view also shows the the same become stretched. All of the standard
bearings are supported on a base plate 35 that
?anged roller sleeve in cross-section, which is car
ried by the wrist. This roller sleeve is omitted in ' forms the bottom for the central chamber 29, and
in order to hold the standard bearings securely in
Fig. 6.
Fig. 8 is a fragmentary vertical section taken position, their bottom faces 36 are provided with
10
grooves 31 that engage over a longitudinal key 38,
about on the line 8—8 of Fig. 3, and further illus
trating details of the means for mounting the which is set in the upper side of the base plate
adjustable standards that support the endless (see Fig. 5). The standards 25 have flat upper
faces 39 that rest against the under face of the
chains.
‘
Fig. 9 is an end view of the parts shown in Fig. 6, cover plate 40 of the chamber 29, so that when
15
that is to say it shows the end of the driving wrist this cover plate is clamped down by means of bolts
and short portions of the driving chain broken 4i, these standards will be held securely in posi—
tion.
away.
The adjustable standards 3|, however, are ca
Referring more particularly to the parts, and
pable of sliding on the guide tongues or keys 38, 20
20 especially to Fig. 1, l indicates a tank about which
and in order to enable them to be adjusted toward
a rudimentary frame 2 is built, said frame sup
or from the ?xed standards 24, their upper ends
porting a compressor 3.
are provided with bolts 42 that extend down
The casing of the compressor preferably in
cludes a central box-form body 4 through which .a
25 countershaft 5 extends, said countershaft being
provided on one end outside of the casing with a
pulley or sprocket wheel 5 driven by a belt or
sprocket chain 7 which, in turn is driven by the
pulley or sprocket wheel 8 on the shaft 9 of a
30 motor Ill, preferably an electric motor.
The box-form body 5 of the casing preferably
has vertical end walls I i and i2, which have open
ings l3 in them, which operate as seats for the
inner ends of the compression cylinders 14 and l5,
35 the former of which is of relatively large diam
eter, and is the ?rst-stage cylinder, while the
through slots 43 formed in the cover plate, so that
when the cover plate is bolted down the standard 25
will be clamped between the base plate 35 and the
cover.
Clamping bolts 45 are provided in the base
plate 35, that pass down through slots 45a in the
bases 46 of the standards 3|, being received in
threaded openings 46a, in the base plate 35, (see
Fig. 5).
The base plate 35 may be provided with four
feet or legs 48 that may be secured by bolts to the
upper side bars of the frame 2 (see Fig. 1).
Pistons l5 and IT are preferably provided with 35
substantially gas-tight rings 59, and are prefer
latter is of relatively small diameter and is the
ably mounted for adjustment on the ends of the
second-stage cylinder. In these cylinders pistons
piston rod sections Ila and Nb. For this purpose
the ends of these rods have threaded necks 5| of
reduced diameter, received in threaded openings 40
in the pistons, and the pistons can be clamped
rigidly in any adjusted position desired, by means
16 and if reciprocate, said cylinders being con
40 nected by a piston rod formed in sections Ila- and
lib, which connect up to a cross-head l8, said
cross-head being preferably constructed of two
oppositely disposed yokes with ?anges i9 that are
bolted together, and these yokes cooperate to form
45 a vertical guide slot 20 for connection to the driv
ing means to reciprocate the pistons.
The construction for reciprocating the pistons,
preferably includes an endless drive chain device
including two oppositely disposed endless chains
50 2!, which, toward the high pressure end of the
of set screws 52.
The cylinder I4 is provided at its outer end
with a low pressure cylinder head 53 provided 45
with an inlet 54 for admitting the gas or air that
is to be compressed. This head is formed with a
transverse web 55 that divides its interior into
an inlet valve chamber 56 and an outlet valve
chamber 51, and these chambers are provided 50
compressor are carried on two assemblies of
with an inlet valve 58 and an outlet valve 59 re
sprocket wheel and shaft including sprocket
wheels 22, and horizontal shafts 23, and these
spectively. These valves are preferably of the
poppet type with springs as illustrated.
The outer end of the high pressure cylinder I5
shafts are mounted in two standards or bearings
55 24, each of these standards or bearings preferably
comprising two upwardly extending posts 25. The
sprocket shafts 23 are preferably mounted in ball
bearings 26 Within the posts, and each sprocket
shaft carries a rigid gear wheel or pinion 21 held
60 between the standards of the corresponding
is provided with a suitable high pressure head 60, .
and this head is divided by a central web similar
to the web 55 into an inlet valve chamber BI and
an outlet valve chamber 62, said chambers being
provided with suitable inlet and outlet valves 63
the aforesaid countershaft 5 extends through the
and 64 of the same type as: those at the low pres (it)
sure end of the compressor.
The gas or air compressed by the low pressure
standard bearings, but only through the outer
piston I6 is expelled through an outlet pipe 65,
posts of the same (see Fig. 5) . This countershaft
65 5 projects at one side so as to carry a fly wheel 28,
which is preferably connected to an inter-cooler
66 to cool the air between the stages of compres
sion. This inter-cooler is constructed so that the
standard bearing.
Above the sprocket shafts 23
and within the chamber 29 that is formed in the
box-form housing or body 4, a countershaft is
provided with driving pinions 30 that mesh with
the gears 21 to drive the sprocket wheels 22 and
thereby drive the chains 2 l .
Adjacent the other end of the chamber 29 and
in line with the main standards 26%, a similar pair
of standard bearings 3! are provided, which
standards are also preferably formed with two
75 standards or posts 32, which carry bearings for
air passing into the inter-cooler cools itself by
expansion. And the inter-cooler is preferably
constructed so that the warm compressed air
from the ?rst-stage cylinder may be expanded
one or more times to cool it.
For this purpose
the inter-cooler is preferably constructed of a
plurality of sections 66a, 66b, 66c and 66d, each of
these sections being composed of a plurality of
laterally expanded heads forming cooling expan- 75
"2,128,937
sion‘cham'bers 61 'with a relatively largelsuper
86 at each end, and to form outside connecting
?cial area ‘exposed to the atmosphere. The ex
panded cooling heads are connected by .necks
88 of reduced diameter, vand ‘through these
links to be connected into the chain. These re
cesses are respectively in line with the chains 2|.
Beyond each recess the wrist is formed with, a
‘projecting link 81 that extends down across the 55'
plane of the run of the chain, and the body of the
sections 66a, 6%, etc., openings‘ '69 are formed
‘for the passage of the air or gas. These
openings 89 are of substantially vthe same
diameter, but the opening 666 where the air
passes from the section 86a into the section 66b
is of relatively small diameter; for example,
three-eighths» of‘ an inch, and as the air ?ows
‘through this opening, the opening acts as an ex
pansion nozzle, that is to say, the air of relatively
high pressure in the section 66a expands through
15 this opening into the section 561), thereby cool
ing this air by its expansion. From the section
66b the air flows through another expansion open
ing. 66f of relatively small diameter but slightly
larger than the opening 881;; for example, ?ve
20 eighths of an inch.
And as the air expands
through this opening into the section 660, it cools
itself further by expansion. In the present in
25
stance no further expansion is provided for, but
in practice, another expansion opening may be
provided between the section 660 and section 66d.
In this way the air may be cooled by successive
expansions and contractions. From the last sec
tion 66d the air passes out through a pipe con
nection 69a that connects to the interior of a
cooling jacket 18 of cylindrical form that sur
rounds the high pressure cylinder l5 forming a
:ooling space ‘H of relatively large volume through
which the air passes, and the wall of this cylinder
is provided with a plurality of outwardly project
ing ?nsv or ribs 12, which greatly increase the
‘super?cial area of the cylinder. In the present
instance, the air from the inter-cooler is passed
?rst to the cooling space ‘H around the high
pressure cylinder, and the inter-cooler extends
Hit longitudinally of the cylinders, being supported at
its ends on the piping 65 and 69a. -
From the cooling space ‘H the air passes by a
suitable pipe connection 13 to a cooling space
14, of relatively large volume, which surrounds
' the low pressure cylinder I4, then to the cooling
jacket 15, which is similar to the jacket 18 and
spaced a considerable distance from the cylinder
wall. This provides a relatively large space for
expansion. The cylinder wall for this cylinderis
also preferably provided with outwardly project
ing ribs or ?ns 16 to increase its‘ super?cial area.
The pipe 13 preferably connects to the cooling
space 14 toward the outer end of the cylinder, and.
at the inner end of the cylinder jacket 15 a pipe
connection 1'! leads off to the high pressure end
of the compressor where it admits the air or gas
for compression, to the inlet chamber 6| of the
high pressure head 60. The outlet valve chamber
‘62 is connected by a suitable pipe connection 18
' to the tank I already referred to- in connection
with Fig. 1.
Each of the sprocket chains 2| preferably com
prises oppositely disposed outside links 19 (see
Fig. 7) ‘and inside links 88, said links being con
nected together by pins-8| with rollers 82 mounted
on the pins between the inside links.
In order to reciprocate the cross-head I8, the
chains 2| are connected by a driving wrist 83
(see Fig. 5) and this wrist is in the form of‘a
iii’) cylindrical block, the body of which carries a
sleeve or roller 84, the diameter of which ?ts
neatly into the slot 28, and the ends of this roller
or sleeve 84 are provided with flanges 85 that
project over the edges of the slot 28. The ends of
as
3
wrist is provided with two longitudinally disposed
pins 88 that extend through the same, which are
preferably of substantially the same diameter as
the pins 8| of the chain. These pins 88 have a '10
driving ?t in the wrist 83, and their ends extend
across the recesses 88 and into the “links” 81.
Each link 81 is of substantially the same length as
the outside links 19 of the chain. The chain is
connected so that two inside links are placed on ‘(15
the inner side of the tongue links 81 wherethe
pin is connected into the chain (see Fig. '7). The
chain has the usual anti-friction rollers 82. In
this way the driving wrist 83 for the cross-head is
connected into the chain, so that its connection ‘20
with the chain operates substantially like. one of
the links of the chain, performing the functions
of the outside links, where it is connected into the
chain.
_
In order to support the cross-head l8 in its 525
travel to and fro between the adjacent open ends
of the cylinders I4 and I5, I prefer to provide
guideways 92 (see Figs. 4 and 5) that extend
longitudinally in the central chamber 29, and
which are secured to the base plate 35. A cross- *‘30
head engages the inner and adjacent faces of
these guide rails 92, and is provided on its side
faces with longitudinal grooves 93 that receive
guide bars 94 that are bolted to the upper faces
of the guide rails 92. If it is desired, the motor I85
I8 may be mounted so as to provide a take-up
adjustment for insuring that the driving belt or
chain 1 from the motor to the countershaft 5
will be sufficiently tight. For this purpose the
cover plate 4|] may be provided with a slide plate “in
48a that rests on it, and which is connected to
the cover plate 48 by bolts 95 running through
slots 96 in the slide plate 40a, and the slide plate
may be provided with upwardly projecting lugs 91,
which are engaged by set screws '98 mounted in
lugs 99 cast integral with the cover plate 48.
Evidently by loosening the bolts 95 the slide plate
40a can be adjusted by tightening up the set
screws 98, after which the bolts 95 can be tight
ened up. Pads or seats 49 for the legs of the
motor are carried on ‘the slide plate 48a.
The general mode of operation of the compres
sor will now be described.
Through the driving belt or chain 1 the coun
tershaft 5 is continuously rotated, thereby ena (55
bling the driving pinions 38 to rotate‘ the gear
wheels 21, and these gear wheels ‘being rigid with
the sprocket shafts 23, drive the sprockets 22,
which in turn drive the chains 2|. The driving
wrist 83 carried by the chains, of course, as it
travels longitudinally along the axis of the cyl
inders, will cause the cross-head 18 to reciprocate,
thereby reciprocating the piston heads l6 and II.
On each intake stroke of the low pressure cylinder
18, gas or air will pass in the inlet 54, pass the in- 1‘ .i
let valve 58 and enter the cylinder. On each out
stroke this valve will close, and the outlet valve'58
open so as to permit the compressed air to pass out
through the pipe connection 65 into the .inter
cooler 66. At this point the air is cooled suf?- 170
ciently to enable it to be employed'for cooling the
wall of the high pressure cylinder I5 .when this
air passes through the jacket space ‘H surround
ing this cylinder. From this point the‘gas or'air
the wrist 83 are cutlawaysoasitoiform a recess passes ‘through the. low .pressurejacket space 34,
:75
4
2,128,937
through which it flows to cool the wall of the low
pressure cylinder.
From this point the gas or
compressed'air passes through the pipe connec
tion ‘I’! to the inlet chamber 6! of the high pres
sure cylinder head 60, and from this point the
partially compressed air passes into the high pres
sure cylinder [5 on each in-stroke of this pis
ton. The motor should drive the chain at suffi
cient speed to give about 95 to 170‘ strokes of the
piston per minute, depending of course, largely
upon the duty of the compressor.
By adjusting the positions of the pistons on the
rods, they can be positioned so that at the end
of the out-stroke they will lie very close to the
inner face of their corresponding heads. For
this reason the volumetric e?iciency of the cylin
cross-head; and a driving wrist driven by the
chain and engaging the cross-head for recipro
cating the same, and means for driving the end—
less chains, said chain operating to give the pis
ton rod relatively few strokes for a given volume
of gas compressed, and thereby reducing the clear
ance losses during compression of a given volume
of gas.
'
2. In a two-stage gas compressor, the combina
tion of a pair of coaxial long-stroke horizontal 10
cylinders arranged in tandem and disposed apart,
one of said cylinders being of relatively large
diameter, and the other of said cylinders being of
a relatively small diameter, a pair of endless
chains mounted to run longitudinally with the 15
cylinders between the same, said chains located
respectively on opposite sides of the axis of said
cylinders, piston heads in the cylinders respec
tively operating to compress the gas in the cyl
inder ends, said pistons having a piston rod con 20
necting the same and lying between the chains,
said rod having a cross-head, and a driving wrist
carried by the chain and engaging the cross-head
for reciprocating the same, means for driving the
ders is very high, as there is substantially no
clearance space. In this connection it should be
noted that the valves are, placed in the heads so
20 that the inner faces of the valves are substan
tially ?ush with the inner faces of the heads, in
accordance with the usual practice where such
valves are placed in compressor heads.
The efficiency of this compressor will be evident
25 from the following considerations: At the end of
endless chains, said chain operating to give the
each compression stroke of a piston a small piston rod relatively few strokes for a given vol
quantity of compressed air is left in the end of the ume of gas compressed, and thereby reducing the
cylinder, and hence the greater the number of clearance losses during compression of a given
strokes the piston makes, the greater will be the volume of gas, an inlet valve for admitting the gas
30 loss due to the volume of air remaining in the , to be compressed at the outer end of the cylinder
cylinder. The cylinders of my compressor, due of relatively large diameter, an outlet valve
to the construction I employ, have very high volu
located at the outer end of the same cylinder,
metric e?iciency; and on account of the fact that
an inter-cooler receiving the compressed air from
relatively few strokes occur in compressing the the outlet valve having a relatively large radiating
air, the efliciency of the compressor is very high surface for cooling the gas by expansion and con
as compared with that of ordinary reciprocating traction, cooling jackets of relatively large vol
compressors.
ume respectively surrounding the cylinders, and
The central chamber 29 is preferably ?lled with means connecting the inter-cooler with the cool
lubricating oil, which covers the driving chains ing jackets for circulating the cooled air through
40 and the cross-head, thereby lubricating the driv
the same, and permitting the air to expand in the
ing chain of the pins and its contacts with the cooling jackets.
cross-head. Furthermore, this oil passes into the
3. In a two-stage gas compressor, the combina
open ends of the cylinders hi and I5, and main
tion of a pair of long-stroke coaxial horizontal
tains the walls of these cylinders very effectively cylinders arranged in tandem and disposed apart,
45 lubricated to reduce the friction of the pistons l6
one of said cylinders being of a relatively large
and IT.
.
diameter, and the other of said cylinders being of
When it is necessary to take up slack in the
a relatively small diameter, a pair of endless
driving chains 2|, this of course, is accomplished chains mounted to run longitudinally with the
by loosening up the nuts 44 that attach to the cylinders between the same, located respectively
50 upper ends of the adjustable standards 31, and
on opposite sides of the axis of the cylinders pis
also loosening up the set screws 45, whereupon ton heads in the cylinders respectively operating
these standards can be moved toward the right, as
to compress the gas in the cylinder ends, said pis
viewed in Fig. 3, to take up the slack of the chains. tons having a piston rod connecting the same
As the jacket spaces ‘H and ‘M are of relatively
lying between the chains, said rod having a cross
55 large volume, the air expands as it is forced into head, and a driving wrist carried by the chain and
them, thereby cooling the air in the jacket spaces engaging the cross-head for reciprocating the
by its own expansion, and cooling the cylinder same, means for driving the endless chains, said
walls.
chain operating to give the piston rod relatively
It is understood that the embodiment of the few strokes for a given volume of gas compressed,
60 invention described herein is only one of the many
and thereby reducing the clearance losses during
embodiments this invention may take, and I do
compression of a given volume of gas, a cylinder
not wish to be limited in the practice of the in
head with an inlet valve for admitting the gas
vention, nor in the claims, to the particular em
to be compressed at the outer end of the cylinder
bodiment set forth.
of relatively large diameter, an outlet valve lo
65
What I claim is:
cated in the said head and receiving air through
1. In a gas compressor, tne combination of a the inner face of the head, an inter-cooler re
pair of coaxial long-stroke horizontal cylinders ceiving the compressed air from the outlet valve
arranged in tandem and disposed apart, a pair having a relatively large radiating surface for
of endless chains mounted to run longitudinally cooling the gas by the atmosphere, and by ex
70 with the cylinders, located between the same, and pansion and contraction, cooling jackets respec
on opposite sides of the axis of the cylinders, pis
tively, surrounding the cylinders, means connect
ton heads in the cylinders respectively, operating ing the inter-cooler with the cooling jackets for
to compress the gas in the cylinders ends, said circulating the cooled air through the same, and
pistons having a piston rod connecting the same means for controlling flow of cooled gas there
75 and lying between the chains, said rod having a
after into the cylinder of relatively small diam
.
530
45
65
70
5
2,128,937
eter, including inlet and outlet valves for enabl
pressure second stage compression cylinder, and
ing the gas to be compressed in thesame.
an inter-cooler for receiving the compressed gas
from the low pressure cylinder, with means con
4. In a two-stage gas compressor, the combi
nation of a pair of long-stroke, horizontal cyl~
inders arranged in tandem and disposed apart,
including a low pressure cylinder and a‘ high
pressure cylinder, a cylinder head corresponding
to each cylinder on the outer ends thereof, an
endless chain mounted to run longitudinally of
the cylinders between the same, piston heads in
the cylinders, respectively, with a piston rod
connecting the piston heads; said rod having a
cross-head, a driving wrist driven by the chain
engaging the cross-head for reciprocating the
same, means for driving the endless chain, each
of said‘ cylinder heads having an inlet valve and
an outlet valve for the gas, an intercooler extend
ing longitudinally with the cylinders and con
nected with the low pressure cylinder head to
20 receive gas from the same for cooling the gas,
a cooling jacket surrounding the high pressure
cylinder and receiving the cooled gas from the
inter-cooler, a cooling jacket surrounding the
low pressure cylinder with means for passing
the gas from the cooling jacket of the high pres
sure cylinder, through the cooling jacket of the
low pressure cylinder, and means for delivering
the gas from the cooling jacket of the low pres
sure cylinder to- the cylinder head of the high
30 pressure cylinder for compressing the gas in the
high pressure cylinder.
5. In a gascompressor, the combination of a
casing having a central chamber with oppositely
disposed substantially vertical end walls having
aligning openings therein forming cylinder seats,
coaxial cylinders mounted in said cylinder seats
and open at their inner ends, piston heads for
compressing the gas in the cylinders mounted to
reciprocate in the cylinders, a piston rod connect
40 ing the same, with a cross-head located in the
said central chamber, a pair of endless chains
mounted to run longitudinally with the cylinders
in the said chamber, located respectively on op
posite sides of the axis of the cylinders, a driv
45 ing wrist carried by the chain and engaging the
cross-head for reciprocating the same, means for
driving the endless chains, and cylinder heads
on the outer ends of the cylinders with inlet and
outlet ports and valves therein respectively for
50 the cylinders, said ports passing through the
inner face of the cylinder heads.
6. In a gas compressor, the combination of a
55
nected therewith for delivering the gas from the
inter-cooler to the high pressure cylinder for
compression therein.
7. A two-stage gas compressor constructed as
described in claim 4, in which the inter-cooler is
formed with expansion chambers in which the
compressed gas from the ?rst stage is expanded, if)
thereby developing a cooling effect.
'8. In a gas compressor, the combination of a
casing having a central chamber with oppositely
disposed end walls having aligning‘ openings
therein forming cylinder seats, cylinders mount
ed in said cylinder seats and open at their inner
ends, piston heads mounted to reciprocate in the
cylinders, a piston rod connecting the same with
a cross-head located in the said central chamber,
a pair of oppositely disposed endless chains ex 20
tending longitudinally with the axes of the cyl
inders and located in the said chamber, a pair
of pillow blocks mounted in said chamber adja
cent one end of the same, sprocket wheels ro
tatably mounted in said pillow blocks with spook
et wheels carrying the endless chains respec
tively, a second pair of pillow blocks mounted in
the said chamber adjacent the other end there
of, means for supporting the same for adjust- '
ment toward or from the ?rst named pillow 30'
blocks, a cover plate seating on the upper side
of the casing and covering the said chamber,
means on the outer side of the cover for clamp
ing the second-named pillow blocks and enabling
the last-named pillow blocks to be adjusted to 35
ward or from the ?rst-named pillow blocks and
secured in a ?xed position with respect to the
same, sprocket wheels rotatably mounted in the
second-named pillowblocks with sprocket wheels
for carrying the said chains, a wrist connecting 40
the said chains and engaging the cross-head for
reciprocating the piston rod.
9. A gas compressor constructed as described
in claim -8, in which the said clamping means for
the second-named pillow blocks includes slots 4:5
formed in the cover plate, and clamping bolts
passing through the slots and mounted in the
upper ends of the second-named pillow blocks for
securing the same.
'
10. In a gas compressor, the combination of 50
a casing having a central chamber with oppo
sitely disposed end walls‘ having, aligning open
casing having a central chamber with oppositely
ings therein forming cylinder seats‘, cylinders
disposed substantially vertical end walls having
aligning openings therein forming cylinder seats,
mounted in said cylinder seats and open at their
inner ends, piston heads mountedto reciprocate
in the cylinders, a piston rod connecting the
coaxial cylinders mounted in said cylinder seats
and open at their inner ends, piston heads mount
ed to reciprocate in the cylinders for compressing
the gas in the cylinders, a piston rod connecting
same with a cross-head located in the said cen
tral chamber, a pair of oppositely disposed end
less chains extending longitudinally in the said
chamber, a‘base plate forming the bottom for
the same, with a cross-head located in the said
the said chamber, a pair of oppositely disposed
central chamber, a pair of endless chains mount
ed to run longitudinally with the cylinders in the pillow blocks supported on the base plate adja
said chamber, located respectively on opposite cent one end of the said chamber, each of said
sides of the piston rod, a driving wrist carried pillow blocks comprising two upwardly extend
ing standards, a sprocket wheel corresponding to 65
65 by the chains and engaging the cross-head for
each pillow block carrying one of said endless
reciprocating the same, means for driving the
chains and having a stub shaft rotatably mount
endless chains, cylinder heads on the outer ends
of the cylinders with inlet and outlet valves ed in the standards of its corresponding pillow
therein respectively for the cylinders, the ports block, a gear wheel carried rigidly by each stub
70
70 for said valves passing through the inner faces of shaft between the standards of its corresponding‘
said cylinder heads, one of the cylinders being pillow block, a transverse countershaft located
of relatively large diameter and constituting the
above the gear Wheels and having driving gear
low pressure ?rst-stage compression cylinder,’ wheels meshing with the ?rst named gear Wheels
for driving the chains, a second pair of pillow
and the other of said cylinders being of rela
75 tively small diameter and constituting a high blocks supported on the base plate adjacent the 75
6
2,128,937
tatably supported in the second-named pillow
at their inner ends, piston heads mounted to
reciprocate in the cylinders, a piston rod con
blocks and carrying the said chains, means for
necting the same with a cross-head located in
guiding the second-named pillow blocks longi
the said central chamber, a pair of endless
chains mounted to run longitudinally with the
other end of said chamber, sprocket wheels ro
tudinally of the chains, means for securing the
second-named pillow blocks in a ?xed position,
and a wrist carried by the said chains and en
gaging the said cross—head for reciprocating the
10
piston rod.
cross-head having a substantially vertical slot
11. In a gas compressor, the combination of
a casing having a central chamber with oppo
for receiving the said wrist to reciprocate the pis
sitely disposed end walls having aligning open
ings therein forming cylinder seats, cylinders
mounted in said cylinder seats and open at their
15 inner ends, piston heads mounted to reciprocate
in the cylinders, a piston rod connecting the
same with a cross-head located in the said cen
tral chamber, a pair of oppositely disposed end~
less chains mounted to run longitudinally with
20 the cylinders in the said chamber, a driving wrist
connecting the said endless chains, said driving
wrist consisting of a cylindrical block having
recesses out in the ends thereof in line with the
said chains respectively and secured to the said
chains, said cross-head having a substantially
vertical slot receiving the body of said wrist
between said chains for, reciprocating the cross—
head.
12. In a gas compressor, the combination of a
ton rods, said wrist consisting of a cylindrical
block with recesses cut in the ends thereof in
line with the chains, a pair of pins extending
longitudinally through the said wrist between the
said recesses extending into the recessesand se,-'
cured at their outer ends to a link of the chain
adjacent each recess, and a flanged roller sleeve
?tting over the body of the wrist and engaging
the edges of the said slot.
14. A two-stage gas compressor constructed as
described in claim 4, in which the inter-cooler
consists of a plurality of connected sections, each
section having a plurality of laterally expanded
chambers therein with reduced necks connecting
the same, said inter-cooler being provided with
an expansion opening of reduced area whereby
the compressed gas in passing through the inter
cooler expands intoithe expanded chambers and
thereby reduces its own temperature.
casing having a central chamber with oppositely
disposed substantially vertical end walls having
nation of a pair of long-stroke horizontal cylin
aligning openings therein forming cylinder seats,
ders arranged in tandem and disposed apart, in
cylinders mounted in said cylinder seats and
open at their inner ends, piston heads mounted
cluding a low pressure cylinder and a high pres
sure cylinder, a cylinder head corresponding to
each cylinder on the outer ends thereof, an end~ 35
less chain mounted to run longitudinally of the
35 to reciprocate in the cylinders, a piston rod con
necting the same with a cross-head located in
the said central chamber, a pair of endless chains
mounted to run longitudinally with the cylinders
in the said chamber, sprocket wheels supported
40 in the chamber for supporting the chains, a
wrist connecting the said chains, said cross-head
having a substantially vertical slot for receiving
the said wrist to reciprocate the piston rods, said
wrist consisting of a cylindrical block with re
45 cesses out in the ends thereof in line with the
chains, a pair of pins extending longitudinally
through the said wrist between the said recesses,
the links of the chain adjacent said pins having
bushings through which the ends of the said pins
50
cylinders in the said chamber, sprocket wheels,
supported in the chamber for supporting the
chains, a wrist connecting the said chains, said
pass so that the ends of the said wrist operate as
links in the said endless chains. '
13. In a gas compressor, the combination of a
casing having a central chamber with oppositely
disposed substantially vertical end walls having
aligning openings therein forming cylinder seats,
cylinders mounted in said cylinder seats and open
15. In a two-stage gas compressor, the combi
3O
cylinders between the same, piston heads in the
cylinders respectively with a piston rod connect
ing the piston heads, said rod having a cross
head, a driving wrist driven by the chain engag
ing' the cross head for reciprocating the same,
means for :driving the endless chain, each of said
cylinder heads having an inlet valve and an out
let valve for' the gas, an inter-cooler for receiving
the gas compressed in the low‘pressure cylinder,
said inter-cooler having an expansion chamber
for the gas with an expansion opening through
which the gas?ows in passing into the expansion
chamber whereby the gas reduces its own tem
perature by its expansion in the expansion cham- r
ber, and means for admitting the gas from the
expansion chamber thereafter into the high pres
sure cylinder to compress the same through the
second stage._
,
WILLIAM B. HALE.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 271 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа