US1581294A - Float trap - Google Patents

Description

April 2o ,1926. 1,581,294

E, A. RUSSELL ET A.v

FLOAT TRAP I gf mi l A mumllui e mllilll lllNllflf I N, I I

Ovpgys.

lPatented Apr. 20, 1926.

UNirsn s-'uariis `P ailalvi* OFFICE. i

EDWARD RUSSELL, OF CHICAGO, AND PAUL B, PARKS, OF OAK PARK, .ILLINOISyAS-f y SIG-HORS TO VAPOR CAR-HEATING COMPANY, INC., OF CHICAGO, ILLINOIS, A COR- PORATIOIN 0F NEW YORK.

Q f yFLO/Afr TRAP.

Original application iled July 28, 192.3, Serial N o. 654,452.. lDvided and this application iled April- 9,

1925. Serial No. 21,810.

To all'whomc't may concern:

Be it known that we, EDWARD A. RUSSELL and PAUL B'PARKS, citizens of the United States, residing at Chicago, Illinois, land Oak Parli, Illinois, respectively, have in;y

modified by connecting the chamber receiving Water through the water outlet ofthe g coil directly with the drip port 'chamber vvented certain new and` useful Improve# ing is a specification.

This invention relates toa float trap def.

signedto permit the discharge of water or other liquid therethrough vwhile maintaining a liquid seal against the escape oi vapor,y

such as steam. The device is particularly designed 1i"or 'use in 'connection lwitha car heating .system of the I general construction shown in the patent to E. A. Russell, No. 1,440,701, granted January 2, 1923. The present application is a ldivision of ourprior` application, Seriall 654,452,iiled July 2S, 1923.

Russell patent referred to above, circulation through the radiating coil is controlled byavvalve device having a centrally arranged .revoluble valve body and constructed so that 'in one position of the valve body steam isadmitted to the inletend of the radiating coil., and water of condensation withdrawnjfrointhe coil at the return end tlieifeoitand also.A at a point intermediate thefends oi' the coil, while in another position of the valve body l the, inlet and outlet ends of the *coiliareQ closed'and steam .is shortfcircuited ronithe' low pressure side of the vapor regulator, dif, rectly to the thermostat 'chamber of said' regulator; In order to provide for discharging the water of condensation received in the chamber to which the interinediate water outlet from the coil is connected,

this chamber (in the patentedy valve) `is in jV communication with the chamber connected with the thermostat casing. of the vapor regulator through a duct in tlie bottoinof the float trap and the control valve of `the the` valve casing arranged so as to be atall times vtherethrough of steam atthe low pressures that the valve is designed tolian'dle. 1

This 'arrangement may be objectionable under some conditions, because of the; danmore particularly 'because'of the likelihood ments in Float Traps, of .which the iollow- In the car heating system 'disclosed in tlief to hereinabove.

Water-sealed against the passage float trap `is connected.

control valve, taken substantially on the line ger of the water freezing in the duct 'and of thev duct becoming clogged other foreign matter.

According to the present improvement', as"

lirst disclosed inour prior 'application Serial 654,452, the construction of the valvel is the improved valve, constitutingin fact aA s iiiglechamber,A and by` providing aj float .valve voif'improved construction 'Which-will allow the escape of Water from the drip port chamber while preventing'outflow ofsteam.

This improved valve, or fiioat trap, forms j the particular vsubject-matterof the presentA This valve' is simple in con- A struction and entirely automatic `-in opera# 7 tion, and will permit the free discharge therethrough of water at Aall times, only application.

enough water being trapped within the valve casing to effectively seal the trap against the escape of steam. The lower'portions of the valve, and of the valve casing, have 'inter-A iitting conical formations, whereby if the small body of water trapped therebetweeny should freeze, it will merely raise the valve and not crush it. vVVhile/thi's iioat traplisV particularlyr useful in a carheating system such as briefly described above, it isequally adapted for use wherever thedischarge of a liquid from anyfsealed vaporfcontaining sysd tem is; desired.

Additional objects and advantages of this i improved device will be apparent from the following detailed description of the Yim- -proved fioattrapA in connection with a poltion of a car heating system such as reif-erred In the accompanying drawing:

Fig. 1 is a central vertical section through car heating system, with which valve? the .Fig. 2 is a horizontal section through the 2--2 of Fig. 1.

Fig. 3 is a central vertical selctionthrougli isb mately 450 to the glane of Fig. 1. The plane ot Fig. 3 is substantially indicated by the line 3--3 on Fig. 4. i

Fig. 4 is a horizontal section on an enlarged scale, taken substantially on the line 4-4 of Fig. 1, and looking in the direction of the arrows.

The control valve for the car heating system comprises a casing 10 having a central circular space 11 in which is arranged a revoluble valve body 12 consisting otl an upper disk 13, a lower disk 14 and vertical webs 15 and 16. The valve body is provided with a stem 17 by means of which the valve is rotated from above by means of mechanism not here shown. The space within the casing 10 around the valve body is divided by webs into chambers a, ZJ, c, fl, and e, each of which opens into the central space 11 in which the valve body is located.

Steam flows from the train supply pipe through the vapor regulator, and then through pipe. 19 to chamber a. Pipe 2O Aleads from chamber b to the car heating radiator.

' A pipe 21 leads from a point intermediate the ends of the radiator coil to chamber c. The return end of the radiator discharges through pipe 22 into chamber (l. A pipe 23 leads from chamber e to the thermostat casing of the vapor regulator.

It will be observed that the apparatus operates like the ordinary vapor car heating system except that while the radiator is receiving steam, water of condensation may be discharged therefrom, not only at the return end of the coil, but also at a point intermediate the. inlet and return ends thereof. TWith the parts of the apparatus in the positions shown in the drawings, steam passes through pipe 19 into chamber a, then through space 11 to chamber l), and through inlet pipe 20 to the radiator coil. After traversing the first section of the coil, water of condensation is discharged through pipe 21 into valve chamber c, theA steam passing on through the second section of the radiator coil. The medium (either water, steam or a mixture of water and steam) discharged from the return end of the coil through pipe 22 into chamber (l, passes into chamber e and thence through pipe 23 to the thermostat chamber of the vapor regulator. The condition of the medium discharged to the thermostat governs the operation of the pressure reducing valve of the regulator.

`When the valve body 12 is shifted from the full line position as shown in Fig. 2, to the dotted line position, steam entering chamber a passes directly into chamber e and then to the thermostat chamber of thel regulator. The radiator is thus short circuited and the steam therein whencondensed flows through pipes 20, 21 and 22 into chambers L, c and d, respectively, which chambers are now in communication with each other. The water received by chamber c while the radiator is supplied with steam, and the water which passes into the valve chambers l), c and l when steam is cut off from the radiator, flows out from chamber c through a discharge duct 28 in the bottom wall 29 ot the valve casing, this duct leading to a drip pipe 3() screwed into a boss 31 on the under side of the valve casing.

Then steam is shut oli:1 from the radiator, there is no objection to having the water outlet from chamber c open to the atmosphere, but inasmuch as this chamber also provides for discharge of water of condensation t'rom an intermediate point in the coil while the system is under steam, it is necessary to provide some means for pre.- venting the escape of steam from the valve at this point while permitting the outflow of water. This is accomplished by providing the drip pipe 3() with a float valve 32 which is arranged in a float chamber casing secured to the end ot the drip pipe. The iioat valve consists of a hollow sheet metal structure, the middle portion of which is cylindrical while the upper and lower ends 33 and 34 are conical. The float valve casing 1s composed of an upper casing section 35 and a lower casing section 36 which lat-V ter may have an internally threaded boss 37 for an outlet pipe 38. The upper section 35 ot the casing is provided with an externally threaded boss 39 'for attachment to drip pipe 30 by means of the union 40. The upper wall 41 of casing section 35 is Jformed on its undersurface with radial grooves 42 providing segmental pads 43 against which the upper end of the valve bears when the valve is raised. Lugs 44 are provided for guiding the upper end of the. valve. When the valve is raised water may iiow down into the valve chamber within the casing through the grooves 42, and between the lugs 44. The lower member 36 of the float. valve casing is formed with a conical bottom 45 having a central opening 46 therein, around which is formed a raised valve seat 47. Member 36 is provided with a. vertically extending cylindrical guide flange 48 to guide the lower end of the valve. iiange is recessed, that is, diminished in height at intervals, as indicated at 49, to points below the cylindrical portion of the valve, so as to allow water to flow int-o the space between the under surface of the valve and the conical bottom of the casing.

The valve 32 is normally seated by gravity and by any pressure of steam that there may be above it, which, however, is slight in a vapor system of the type described. and when water is discharged from chamber f;- in suiiicient quantity to float the valve .32, port 46 will be opened to allow the discharge of water through outlet pipe 38. Only a small amount of water is trapped under the This valve, in the narrow space between the inter- {itting conical portions 34 and 45 of the valve and valve casing, and in case this water should freeze, its expansion will merely raise the valve and not crush it.

While this float trap is particularly useful in connection with the control valve for the vapor car heating system, as above vdescribed, it is obvious that it-may function in a like manner in any other .system where it is desired to discharge liquid from a vapor-containing system without permitting the escape of vapor through the liquid discharge pipe. All of such uses of the float trap are contemplated, and intended to be covered by the following claims.

We claim:

1. A float Valve device comprising a valv chamber having an inlet opening in the top and a discharge opening in the bottom, the

top and bottom being conical, and the under surface of the top formed with substantially radial grooves, and a oat valve having conical ends in said chamber, and guide lugs projecting into the chamber for guiding the valve without interfering with the iow of fluid therearound.

2. A float valve device comprising a valve Y valve is in lowered position sealing the disf charge opening, and guide means projecting into the casing for guiding the cylindrical portion of the valve andr centering the conical ends thereof ywithin the conical portions of the'casing Without interfering with the .flow of fluid around the valve.

i EDWARD A. RUSSELL.

' PAUL B. PARKSj

Images