US2434215A - Control valve for gaseous fuel - Google Patents

Description

Jan.6,1948; QMMAYER 2,434,215

CONTROL VALVE FOR GASEOUS FUEL BURNERS Filed oct. 7, 1944 Iz/l 0n Position CHARLES M. MAYER.

Patented Jan. 6, 1948 CONTROL VALVE FOR GASEOUS FUEL BURNERS Charlesv M. Mayer, Mansfield, Ohio, assignor to The Tappan Stove Company, Mansfield, Ohio, acorporation of Ohio Application October 7, 1944, Serial No. 557,608

6'Claims. (Cl. 277-32) This invention relates generally to a control l valve for controlling the iiowl of gas to a gas burner and more particularly to a control valve for the top burners of a gas range which is so designed and constructed as to make it possible to obtain either a full llame or a simmer flame at the gas burner.

One of the objects of the invention isl to provide a control valve of the character described which will permit accurate control of the gas admitted to a burner whether' the burner venturi is located at or immediately adjacent the valve, or in a remote location and connected by a tube or pipe. Such aA valve is` particularly desirable with hydrocarbon gases which are delivered at relatively high pressure'andat high heat content per unit volume. ForV example, enough gas is delivered through an orice having a diameter of .025 inch to support a, maximum cooking flame on a top burner. For many cooking operations, it is desired to have a reduced flame and even a very small flame for simmering-L Fora simmer flame, the gas flow isv that permitted through an orice of. about .0.09fto .012 inchv inA diameter or an equivalent gas passageway, Obviously, if this control is attempted by the partial registration of two ports located in the plug and'body of the valve respectively, the slightest rotation of the plug would' at this point enlarge or decrease the opening by a large percentage in comparison to the small totalgas ilow required. Thecontrol of the ame therefore becomes very critical and requires only av slight turn ofthe handlef'rom the off to full position. In my improved valve, I control the flow of gas by means` of a longitudinally movable valve member which is actuated by rotation of thevalve cock so as to obtain accurate adjustment andA any size flame thatV is desired without minuteadjustment.

Another object of the invention is to provide a gas control valve having the above described distinguisliingI featuresand characteristics and which comprises few parts which are well adapted for' production and assembly atr a minimum cost.

Further and more limited objects of the invention will appear asthe description proceeds and by reference to the accompanying drawings in which- Fig. 1 isla vertical sectional view disclosing my improved control valve together with'a top'burn` er for a gas range;

Fig. 2 is f a vertical sectional viewof the control valve proper;

Fig. 3 is a vertical sectionalfviewon theiline 3 3 of Fig- 2;

Fig. 4 is a view in elevation of the longitudinally movable valve member;

Fig. 5 is a sectional view on the line 5 5 of Fig. 4;

Fig. 6 is a fragmentary view in elevation taken on the line 6 6 of Fig. 2;

Fig. '7 is a vertical sectional view taken on the line 'I I of Fig. 2; v

Fig. 8 is a vertical sectional Viewl taken on the line 8 8 of Fig. 2; and

Fig. 9 is a fragmentary sectional view similar to Fig. 2, but showing the valve inthe simmer position.

Referring now to the drawings, the control valve consists essentially of a valve body member' I having an inlet passageway 2 and an outlet passageway 3; The valve body has a generally frusto-conical chamber therein into which i'lts a similar shaped' valve plug 4' which is actuated by a valve stem 5i and a handle 8. A' cap 9 closes the end ofthe valve body and a coil spring I tends to urge the plug toward the left as' seen in Fig. 2. The plug 4 has one or more ports I I therein adapted to be brought into register with the outlet passageway 3. The valve plug 4. is

provided at its inner end with a` circular recess- I2. Threadedly securedin the inlet passageway 2 is a valve member I3 which is shown in detail in Figs. 4 and 5. One end of the valve member I3 ts within the recess I2 and isslidably but nonrotatably secured therein.' The valve member' I3 is provided with an axial'bore I4 anda smaller intersecting radial bore I5`the purpose of which will hereinafter appear. The inner end portion ofthe valve member I3 fits within notches provided within the wall of the chamber I2 `so that a turning movementV of the valve stem 5 imparts a longitudinal movement of the valve member I3 due to its threaded engagement with the walls of the inlet passageway.

Threadedly secured within the end of the inlet passageway is a plug IB having therein an axial bore I 'I which isA disposed in axial alignment with the bore I4 in the valve member I3. A pipe I8 connects the-inlet passageway with the gas intake manifold I9;

In Fig. 2 the valve is shown in the position for permitting a maximum flame at theV burner whichv is determined by the size of the bore II. Due to the fact that the valve member I3 is-somewhat triangularly shaped in section, three passageways are provided betweenthe inner wall of the' inlet passage and the valve member through which the gas may flow; When the'valve is moved to' the position shown in Fig. Zagasfflows through the port I'I in the plug I6 and thence along the valve member into the chamber I2 and thence through the outlet passage 3 through the port II. In this position of the valve, the burner is receiving the maximum amount of gas permitted which is determined by the size of the bore I'I. When the valve is moved to the simmer position shown in Fig. 9, the valve member I3 abuts the machined face of the plug I6 and completely shuts 01T the flow f gas between the faces of these parts, In the simmer position of the valve, the gas will flow through the bore Il, thence through the bore I4, thence through the smaller radial bore l into the chamber I2 and thence through the port II and outlet passage 3. The port I5 is of such size as to permit the flow of .only sunicient gas to maintain a simmer ame. In the oi position of the valve the outlet is closed by a solid portion of the plug 4. The first SiO-degree turn of. the valve plug 4 from the "o-if position brings the parts to the full on position shown in Fig. 2. If the valve handle is moved 90 degrees further in the same direction, the face of the valve member I3 is moved into engagement with the face of the plug I'I so as to permit flow of gas only through the ports I4 and VI5 to provide a simmer flame. In Fig. l there is disclosed a flat top stove 20 having the top burner 2I disposed immediately above the control valve but this arrangement is only illustrative as the control valve may be located elsewhere.

It will now be clear that I have provided a control valve for gas burners which will accomplish the objects of the invention as hereinbefore stated. The embodiment of the invention herein disclosed is to be considered merely as illustrative and not in a limiting sense as various changes may be made in the details of construction and arrangement of parts without departing from the spirit of my invention. The invention is therefore limited only in accordance with the scope of the appended claims.

Having thus described my invention, what I claim is:'

1. A control valve for gas burners comprising a valve body having an internally threaded inlet passageway and an outlet passageway, a plug secured in the outer end of said inlet passageway, an axial bore extending through said plug, an externally threaded valve member screwed into the inner end of said inlet passageway, a longitudinal bore extending partially through said valve member in axial alignment with the bore in said plug, means providing for the ow of iiuid extending throughout the length of said valve member, a radial bore in said valve member providing communication between said longitudinal bore and said means, said radial bore being of smaller capacity than said longitudinal bore or said means, and means for rotating said valve member to move the outer face of said valve member into and out of engagement with the inner face of said plug whereby in one position the axial bore in said plug determines the amount of gas flowing into said valve body and in the other position the radial bore in said valve member determines the amount of gas flowingY into said valve body.

2. A control valve for gas burners comprising a valve body having an inlet and an outlet passageway. a plug secured in the outer end of said inlet passageway,`an axial bore of fixed capacity extending through said plug, a valve member mounted in the inner end of said passageway and adapted to be moved into and out of engagement with the inner end of said plug, a longitudinal bore extending partially through said valve member in axial alignment with the axial bore through said plug, means in said valve member providing forI the ow of fluid, said means extending throughout the length of said valve member and the capacity thereof being not less than the capacity of the axial bore in said plug, a communicating radial bore between said longitudinal bore and said means in said valve member of smaller capacity than the capacity of said axial bore in said plug, and rotatable means for moving said valve member into and out of engagementwith the inner face of said plug whereby in one position the axial bore in said plug determines the amount of gas flowing into said valve body and in the other position the radial bore in said valve member determines the amount of gas owing into said valve body.

3. A control valve for gas burners comprising a valve body having an inlet and an outlet passageway, a plug secured in the outer end of said inlet passageway, an axial bore of fixed capacity extending through said plug, a valve member mounted in the inner end of said passageway and adapted to be moved into and out of engagement with the inner end of said plug, means in said valve member providing for the flow of fluid through which gas is adapted to ow into said valve body when said valve member is out of engagement with the inner face of said plug. said means being of a capacity not less than the capacity of the axial bore in said plug, a bore in said valve member of smaller capacity than the capacity of the axial bore in said plug through which all the gas entering said valve body ows when said valve member is in engagement with the inner face of said plug, and manually operated means for moving said valve member into and out of engagement with the inner face of said plug.

4. A control valve for gas burners comprising a valve body having an internally threaded inlet passageway and an outlet passageway. a plug secured in the outer end of said inlet passageway, an axial bore of fixed capacity extending through said plug, an externally threaded valve member screwed into the inner end of said inlet passageway and adapted to be moved into and out of engagement with the inner end of said plug, means in said valve member providing for the flow of i'luid through which gas is adapted to iiow into said valve body when said valve member is out of engagement with the inner face of said plug, said means being of a capacity not less than the capacity of the axial bore in said plug, a bore in said valve member of smaller capacity than the capacity of the axial bore in said plug through which all of the gas entering said valve body flows when said valve member is in engagement with the inner face of said plug` and manually operated means for rotating said valve member to move the outer face of said valve member into and out of engagement with the inner face of said plug.

5. A control valve for gas burners comprising a valve body having an inlet and an outlet passageway, a plug secured in the outer end of said inlet passageway, an axial bore of xed capacity' extending through said plug` a valve member mounted in the inner end of said passageway and adapted to be moved into and out of engagement with the inner end of said plug. means in saidl valve body when said valve member is out of engagement with the inner face of said plug, said means being of a capacity not less than the capacity of the axial bore in said plug, a bore in said valve member of smaller capacity than the capacity of the axial bore in said plug through which all the gas entering said valve body flows when said valve member is in engagement with the inner face of said plug, a plug valve rotatably mounted in said valve body and operative to control the flow of gas through said outlet passageway, and interconnecting means between said valve member and said plug valve through which said valve member is moved into and out of engagement with said plug by the rotation of said plug valve.

6. A control valve for gas burners comprising a valve body having an internally threaded inlet passageway and an outlet passageway, a plug secured in the outer end of said inlet passageway, an axial bore extending through said plug, an externally threaded valve member screwed into the inner end of said inlet passageway, a longitudinal bore extending partially through said valve member in axial alignment with the bore in said plug, means providing for the flow of fluid extending throughout the length of said valve member, a radial bore in said valve member providing communication between said longitudinal bore and said means, said radial bore being of smaller capacity than said longitudinal bore or said means, a plug valve rotatably mount- 6 ed in said valve body and operative to control the passage of gas through said outlet passageway, interconnecting means between said valve member and said plug valve through which said 5 valve member is rotated in unison with said plug valve and moved into or out of engagement with the inner face of said plug whereby the axial bore in said plug controls the amount of gas flowing into said valve body when said valve is 10 out of engagement with said plug and the radial bore in said valve member controls the amount of gas flowing into said valve body when said valve member is in engagement with said plug.

CHAS. M. MAYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,183,825 Steien Dec. 19, 1939 2,260,474 Mueller Oct. 28, 1941 624,624 Casey May 9, 1899 824,425 Johnson June 26, 1906 1,748,793 Prawat Feb. 25, 1930 1,836,242 Harper Dec. 15, 1931 1,882,836 Harper Oct. 18, 1932 1,969,163 Stevenson Aug. 7, 1934 1,759,892 Doen May 27, 1930

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