US2855954A

US2855954A - Gas valves

Info

Publication number: US2855954A
Application number: US449043A
Authority: US
Inventors: Charles C Lamar; Frank H Bergquist
Original assignee: Harper Wyman Co
Current assignee: Harper Wyman Co
Priority date: 1954-08-11
Filing date: 1954-08-11
Publication date: 1958-10-14
Anticipated expiration: 1975-10-14

Description

Oct. 14, 1958 c. cfLAMAR ETAL i 2,855,954

GAS VALVES Original Filed April 24,` 1952 1 2 Sheets-Sheet 1 Get., 4, 1958 c. c. LAMAR 'ETAL l 2,855f954 l GAS VALVES Original Filed April 24, 1952 2 Sheets-Sheet 2 Full 0h J0. l @rr'rTove nl @@faz' Unite GAS VALVES 24, 1952. rli`his application August 11, 1954, Serial No. 449,043

7 Claims. (Cl. IS7-599.2)

The present invention relates to gas valves, and particularly to so-called double gas valves, i. e., valves used with gas burners each having two burner sections and wherein the double valve controls the supply of gas to both sections. Burners of this type are Called double burners and one of the burner sections is generally called the main burner and the other the simmer burner. The present application is a continuation of our application Serial No. 284,036, filed April 24, 1952, and now abandoned.

Certain features of the present invention are disclosed in the copending applications of Charles C. Lamar, Serial No. 277,219, now Patent No. 2,770,253, and Charles C. Lamar et al., Serial No. 277,218, tiled March 18, 1952, and now abandoned. The latter discloses a double gas valve which can be constructed simply even though it provides a considerable number of desirable operating characteristics and which can be made economically because of its small size. The present invention is directed particularly to a new and improved double valve of the character disclosed in the Lamar et al. application but which is constructed and arranged so that it can be readily used with or adapted for use with different types of gas.

In double valves of the character towhich the present invention is directed, the valves are operable into a plu- -Iality of operative positions. These positions include a full on position wherein gas is supplied at a maximumv rate to both the main and simmer burner sections, a full simmer only position wherein gas is supplied at a maximum rate to the simmer burner only, and a low simmer position wherein a predetermined low quantity of gas is supplied to the simmer burner only, in addition to an olf position. The valves are constructed and arranged also to provide what are called turn-down ranges wherein controllable quantities of gas can be supplied to both the burner sections or to the simmer burner section only.

The gas valves maybe utilized with various types of gas so that it is important, in order to get proper operation, that the valve be either constructed for the particular gas with which it is to be used or that it be adjustable so that it can be used with many types of gas. Accordingly, one embodiment of the valve of the present invention is constructed and arranged to provide the necessary adjustability and the valve of another embodiment is so constructed and arranged that it can readily be modified during final stages of construction to t it for the particular gas with which it is to be used.

In brief, the valve of the present invention includes a valve body having a tapered valve plug receiving chamber and a gas inlet passageway and a main burner outlet passageway angularly spaced from the inlet passageway and which may be coplanar with the latter and both of which communicate with the chamber. also what may be called a full simmer outlet passageway angularly spaced from the other passageways and which is axially spaced toward the smaller end of the chamber from at least the inlet passageway. The inlet The body hasv States Patent with diiferent types of gas.

passageway may be angularly substantially intermediate the main and simmer outlet passageways where they communicate with the chamber. The inlet is in a generally vertical plane while the outlet passageways are generally horizontal and spaced about in opposite directions from the inlet passageway. The outlet passageways also have axially extending portions located at opposite sides of the chamber. Within the valve chamber is mounted a rotatable tapered valve plug having an axial passageway and transverse passageway deiining means aligned with the inlet passageway and both the main and simmer burner outlet passageways in a full on position of the Valve and aligned with the inlet an-d simmer burner outlet passageways in a full simmer position. The valve and body include also other passageway dening means providing what might be called a low simmer and carry-over passageway including ow restricting means for predetermining the ow of gas in the low simmer position and also in a so-called carry-over range wherein the valve is operated to change over from the supply of gas to both burner sections to the supply of gas to the simmer burner section only. This other passageway includes a passageway in the valve body opening to the valve chamber in a region spaced from the other passageways in the valve body toward the larger diameter end of the chamber and communicating with the simmer burner outlet passageway and the axial passageway in the plug. The ow restricting means is embodied in the rotatable valve element in such manner that it is accessible for adjustment from the exterior of the valve as through a hollow portion of a valve operating stem whereby the valve can readily be adjusted for use In an alternative arrangement, the ilow restricting means is of a non-adjustable type, but of a character enabling it to be placed in the valve body as during a final stage of construction of the valve when the particular type of gas to be used is known. Furthermore, to simplify construction the low simmer and carryover passageway is so yconstructed and arranged that it interconnects the gas inlet passageway with the low Lsimmer burner outlet passageway only in the desired operating regions, although it could do so continuously.

Other objects and advantages of the present invention will become apparent from the ensuing description of illustrative embodiments thereof, in the course of which reference is had to the accompanying drawings, in which:

Fig. 1 is a full scale top plan view of a valve constructed in accordance with the invention;

Fig. 2 is a full scale side elevational view of the valve;

Fig. 3 is a full scale end view looking at the valve from the stem end;

Fig. 4 is an enlarged top plan view partly in axial section and with the valve in its full on position;

Fig. 5 is a plan view of the valve plug;

Fig. 6 is a conical layout of the plug chamber and plug with the valve in its full o-n position;

Figs. 7, 8 and 9 are views similar to Fig. 6 illustrating the valve in its full simmer, low simmer, and off positions;

Fig. l0 is a view similarrto the preceding views illustrating the valve in the carry-over range; and

Fig. 11 is a View similar to Fig. 4 of another embodiment of the invention in which the ow restricting means for predeterminingthe flow in the carry-over and low simmer positions is located in the valve body.

Referring now to the drawings, and first to Figs. l-5, inclusive, the double gas valve of the present invention is indicated as a whole by reference character 30. It comprises a valve body 32 having a plug receiving chamber 34 with a conical inner surface 36 Within which is mounted a movable control member illustrated as a rotatable tapered or conical valverplug 38.

Gas is supplied to the valve from any suitable source such as a gas manifold 40 (see Fig. 4). The valve body is provided with an inlet passageway 1 formed within an externally threaded boss 42 utilized in securing the valve to the manifold. The inlet is radial relative to the longitudinal axis of the valve plug and chamber. The body is also provided with radial

outlet passageway portions

2 and 3 located in a generally horizontal plane and spaced about 90 in opposite angular directions from the inlet passageway and through which gas is supplied to the main and 'simmer burners, respectively. Passageway 2 cornmunicates with an axially extending main burner outlet passageway 44 formed in lthe valve body and terminating in an externally threaded boss 46 to which is secured an adjustable hood 48 which predetermines the maximum quantity of gas supplied to the main burner section of the double burner, not shown, in the full on position of the valve. Passageway 3 communicates with a generally axially extending simmer outlet passageway portion S in the valve body which in turn communicates with a simmer burner outlet passageway 52 formed in an externally threaded boss 54 at the end of which s mounted an adjustable hood 56 which predetermines the maximum quantity of gas supplied to the simmer burner section (not shown) in both the full on and full simmer positions. All of the passageways mentioned can be readily formed as by drilling the valve body. The

passageways

2 and 3 can be drilled from the outside of the valve body after which the outer ends can be readily closed asby the cupshaped plugs 58. These passageways and the passageway 1 can also be drilled at the same time as the hereinafter referred to

passageways

11, 12 and 13 in the valve plug.

The valve plug of the illustrative embodiment of the invention is provided with an axially extending passageway and with four

radial passageways

11, 12, 13 and 14, of which, as best illustrated in Fig. 4, the passageways 11, l2 and 13 are aligned with the

passageways

1, 2 and 3 in the valve body in the full on position of the valve plug. The

simmer outlet passageways

3, 13 and 14 are axially spaced toward the smaller end of the chamber and plug from the inlet passageway 1 so that there can be no registry of any of this set with the inlet passageway. Also, passageway 14 registers with the passageway 3 in the full simmer position, in which position passageway 12 in the plug registers with the inlet passageway 1 in the body, as will be described in greater detail hereinafter. The axial passageway 10 in the valve plug is connected to the inlet passageway 1 in the operative positions of the valve. Accordingly, gas is supplied to the axial passageway at line pressure and throttling occurs at the outlets. As illustrated,

passageways

1 and 11 are of the same size, e. g., about .204 inch in diameter, whereas

passageways

2 and 12 are somewhat smaller, e. g., 193 inch in diameter, as are

passageways

3 and 13, which may have `a diameter of about .125 inch, so that, as shown, the simmer gas fiow is turned down prior to the main in the double turndown range. Passageway 14 may be somewhat smaller than

passageways

3 and 13, as of about .093 inch. The plug may have a conventional taper of two inches per foot, but is otherwise comparable in size to a single valve plug and has a length of 1%@ inch, a diameter of .361 inch at its smaller end and of about .450 inch at the plane of the inlet passageway.

In accordance with one of the features of the present invention, the valve is constructed and arranged in such manner that the valve can be utilized with different types of gases requiring different sized orifices in the low simmer and carryover positions. enabling the supply of gas to the simmer burner outlet passageway to be regulated or adjusted through a hollow portion of the valve operating stem, the stem being indicated by the reference character 60 and the hollow by the reference character 62. An auxiliary adjustable valve 64 -is mounted as at the juncture of the hollowA 62 and the axial passageway 10 and thus at the larger end of the This is accomplished by means valve plug. This valve controls the tiow of gas from the axial passageway 10 to the simmer burner outlet passageway, the arrangement of passageways in the plug and body being such that the axial passageway is effectively connected to the simmer burner outlet passageway both in the low simmer position of the valve and at the low end of the turn-down to both sections where a changeover is made from the supply of gas to both burner outlet passageways to a supply of gas to the simmer burner outlet passageway only.

The low simmer passageway system includes a second radial passageway 5 in the valve body generally parallel to 'the passageway 3 and communicating with a generally axially extending passageway 6 forming in effect an extension of passageway 50. The passageway 5 opens to the tapered portion of the valve plug and is axially spaced from the

passageways

1 and 11 so that there is no possibility of registry between them. In order to interconnect passageway 5 with the axial passageway 10 through the auxiliary valve 64, the valve plug is provided with passageway defining means taking the form of a pair of lspaced apart generally transversely

exending passageways

15 and 16 adapedto register with the passageway 5 in the low simmer and carry-over positions, see Figs. 8 and l0. The

passageways

15 and 16 are coplanar and so spaced axially toward the larger end of the plug from. passageways other than 5 in the body that they are effectively sealed from them in any plug position. The

passageways

15 and 16 communicate with an annular groove 66 formed at the exterior of one of the two relatively rotatable parts of the auxiliary valve, specifically in the fixed part 68, within which the rotatable part 70 is mounted. The part 68 is tubular in formation and is adapted to be press 'fitted into the axial passageway 10. It has a thin walled extension 72 rotatably securing the rotatable element 70 to the tubular portion. The rotatable element has an enlarged head 74 engageable as by a screw driver through the hollow 62 of the stem. The fixed and rotatable parts have orifices 76 and 78 that are movable relative to each other to vary the effective size of theoritice and lthus the quantity of gas supplied therethrough to the simmer burner section. The orifice 76 leads to the annular groove 66 while the orifice 78 is connectedv to the axial passageway v10 in the valve plug through an axial passageway 80 in the rotatable element 70 ofthe auxiliary valve.

The variouspositions of the valve may be indicated to vthe user in desired manner by position indicating and determining means. The means illustrated herein will fnot be described in detail but it is of a character dis closed and claimed in the copending application of Philip S. Harper, Serial No. 162,446, led May l7, i950. The means includes a full on and off position determining 'and indicating washer 82 having a radial projection 83 engaging a first shoulder 84 `on the valve body in the off position and another shoulder 86 in the full on position. The washer 82 encircles the valve stem 6l) and rotates 4with it. It is biased against a housing 88 by a spring 90 (see Fig. 4) which also maintains the valve plug seated. Additional intermediate position indicating mechanism is located within the housing 88. The housing consists ofl acup-shaped element 92 and an end cap 94 through which the valve stem projects. The housing is held in assembled relation relative to the valve body by the securing screws 96. Within the housing is located a washer 98, also rotating with the valve stem, and a spring element cooperating with the washer for position indication.

The valve is operable into a plurality of positions indicated particularly in Figs. 6-10, inclusive. These positions are a full on'position, a full simmer position, a'low simmer position, and an off position, together with a carry-over range that is illustrated in Fig. 10. In these figures the positions of the valve plug relative to the body are indicated by the arrow 102 and the angle readings. The valve construction is also such that turndown ranges are provided in which regulatable quantities of gas are supplied to both the main and simmer burner sections and to the simmer burner section only.

In the full on position indicated in Fig. 6, maximum quantities of gas are supplied to both the main and simmer burners. In this position the inlet passageway 1 is in full registry with passageway 11 so that gas is supplied to the axial passageway and thence through

passageways

12 and 13 and the main and simmer

burner outlet passageways

2, 44 and 3, 50 to the main and simmer burners, respectively. 1

When the valve is turned in one direction from its full on position to the full simmer position a decreased and regulatable quantity of gas is supplied in what is called a turn-down range, to the two burner Sections, the throttling taking place at the outlet passageways rather than at the inlet. The arrangement is also such that the

simmer passageways

3 and 13 are out of registry before

passages

2 and 12, thus yinsuring turn-down of the simmer to a predetermined minimum or low turn-down, prior to the termination of the supply of gasto the main burner.

In the transition from the supply of gas to both sections to the supply of gas to the simmer burner only, the maintenance of ame at the simmer burner is insured by supplying a predetermined minimum quantity of gas to the simmer burner section. The transition, or carryover as it may be called, occurs at the low end of the yturn-down of gas to both burner sections, as illustrated in Fig. 10 from which it will be noted that the inlet passageway communicates with the axial passageway through

passageways

11 and 12, and that the axial passageway communicates with the main burner outlet passageway 2 through passageway 12 and with the simmer burner outlet passageway 52 through the auxiliary valve 64 and the passageway 16 in the valve plug and the passageways 5, 6 and 51B in the Valve body. 1n this position passageway 3 is closed and passageway 2 is almost closed at the plug surface and the latter will be closed upon slight further movement. The location of passageway 16 is such that it began to register with `passageway 5 before

passageways

3 and 13 were completely out of registry, so as to insure a continuous supply of gas to the simmer burner.

In the full simmer position illustrated in Fig. 7, the inlet passageway 1 registers with passageway 12 in the valve plug, and the plug passageway 14 registers with the passageway 3 so that a full supply of gas is supplied to the simmer burner.

The low simmer position illustrated in Fig. 8 results from further movement of the valve plug in the same direction to a position where passageway 12 is in partial registry with the inlet passageway 1 and wherein the predetermined and adjustable minimum supply of gas is supplied to the simmer burner through the auxiliary valve 64 and passageway 15 in registry with the body passageway 5 which leads to the simmer burner outlet passageway 50 through passageway 6. Passageway 15 in the plug is so located that it begins to register with passageway 5 before

passageways

3 and 14 are out of registry, again to insure a continuous supply of gas to the simmer burner.

ln this low simmer position the supply of gas is readily adjustable through the hollow of the valve stem so that the valve may be readily used with diierent types of gases.

Further turning of the valve plug in the one direction results in a gradual decrease of gas ilow to the simmer section until the valve plug reaches its olf position.

In operation of the valve from its 0E to full on position, the sequence of operation is the reverse of that described above.

The present invention also lends itself to the use of different fixed orifice dening structures for use with different types of gas. A valve of this type is illustrated in Fig. 1l to which reference will now be had. The construction is very much the same as the one described here'- tofore except that a lixed orifice defining structure as in the form of a cup-like insert with an oriiice 111 is placed lin the passageway portion 6 leading to the simmer burner, the

passageways

15 and 16 are radial, and the valve plug 112 has a solid stem 114. The valve plug is, however, provided with the axial passageway 1t) and the

passageways

11, 12, 13, 14, 15 and 16. The

passageways

15 and 16 are axially spaced from the other passageways in the valve plug so that undesired gas flow is prevented.

From the foregoing detailed description of the present invention it may be noted that valves embodying the features thereof are simple to construct and provide the desired operating conditions in a small, compact, and eicient structure.

While the invention has been described in connection with the details of particular embodiments thereof, it should be understood that these details are not intended to be limitative of the invention except insofar as set forth in the accompanying claims.

Having thus described our invention, what we claim 'as new and desire to be secured by Letters Patent of the United States is:

l. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a tapered valve plug receiving chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a tapered valve plug mounted in `said chamber having a rst passageway aligned with said inlet passageway and second and third passageways aligned with said main and simmer outlet passageways in a full on position of the valve, said valve plug including also an axial passageway communicating with the three mentioned passageways in the plug and including also a fourth transverse passageway in coplanar relation with said third passageway in the plug and said simmer Iburner outlet passageway, said inlet, main burner Outlet, and first and second plug passageways being axially displaced from the coplanar passageways, the angular spacing of said passageways in the ,body and plug being such that the valve plug is operable in one direction from its full on position through a Iturn-down range of both burner sections to a full simmer position wherein the fourth transverse passageway in the plug is in registry with the simmer burner outlet passageway and said second passageway in the plug is in registry with the inlet passageway and the main burner outlet passageway is closed at the bearing surface between the plug and body, so that the plug is movable in said one direction from said full simmer position through'a turndown range of the simmer section only into a low simmer position wherein both the main and simmer burner outlet passageways are closed at the bearing surface between the plug and body, means including further passageway defining means extending from said axial passageway to the surface of said plug at a point spaced from the other passageways toward the larger end lof the plug and adjustable flow restricting means in -said passageway accessible from the exterior of the plug, and another passageway in said body connecting said simmer burner outlet passageway to said further passageway defining means in the low simmer position, whereby an adjustable predetermined low quantity of gas is supplied to the simmer burner loutlet passageway only in the low simmer position, and said plug being movable further in said one direction to an off position wherein said inlet passageway is closed.

2. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a valve plug mounted in said chamber having a first passageway aligned with said inlet passageway and second and third passageways aligned with said main and simmer outlet passageways in a full assises l,

on position of the valve, said valve plug including also'an axial passageway communicating with the three mentioned passageways in the plug and including also a fourth transverse passageway in coplanar relation with said third passageway in the plug and said simmer burner outlet passageway, said inlet, main burner outlet, and first and second plug passageways being in coplanar relation and axially displaced from the other coplanar passageways so that the'two coplanar sets of passageways do not register in any position of the plug, the angular spacing of said passageways in the body and plug being such that the valve plug is movable in one direction from its full on position through a turn-down range of both burner sections to a full simmer position wherein the fourth transverse passageway in the plug is in registry with the simmer burner outlet passageway and said second passageway -in the plug is in registry with the inlet passageway and the main burner outlet passageway is closed at the bearing surface between the plug and body, means including a pair of coplanar further transversepassageways in said plug leading from said axial passageway to the surface of the plug at points axially and angularly spaced from the other passageways and angularly from each other and a further passageway in said body adapted to connect said further plug passageways to the simmer burner outlet passageway, a single gas flow restricting orifice for limiting the flow of gas through both of said further passageways, said further passageways being so located that the plug is movable into a low simmer position wherein gas is supplied to the simmer burner outlet passageway only through one of said pair of further passageways in said plug and the one in the body and the gas ow restricting means, the location also being such that gas is supplied to the simmer burner outlet passageway through the other of said pair of further passageways in said plug and the one in the body during movement of the plug in changing over from the supply of gas to both outlet passageways to the supply of gas to the simmer burner outlet passageway only.

3. A double gas valve as claimed in claim 2 wherein said gas flow restricting means is adjustable and mounted inthe valve plug between the axial passageway and both said further transverse passageways in the plug, and the plug has a hollow stem open to said restricting means and through which the latter is adjustable.

.4. A double gas valve as claimed in claim '2, wherein said gas flow restricting means is in the further passageway in the valve body.

5. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a tapered chamber, a generally vertical gas inlet passageway leading to said chamber, a main burner outlet passageway having an axially extending portion on one side of said chamber and a transverse portion leading lto said chamber at a point angularly spaced from said inlet passageway, and a simmer outlet passageway including interconnected first and second transverseportonsleading to said chamber, the first portion being axially spaced toward the small end of :said tapered chamber and the second toward the large end of the chamber from said inlet passageway, all said outlet passageways being in a substantially common axially extending plane and said main and simmer outlet passageway transverse portions opening into said chamber at angularly opposite sides of vsaid chamber and the inlet passageway being angularly substantially intermediate them, a tapered rotatable valve plug in said chamber controlling the connections between said inlet and outlet passageways, said plug having an axial passageway and a plurality of transverse passageways leading from said axial passageway to the exterior of the plug and certain of which connect the inlet passageway to the axial passageway'in the operative positions of the plug so that gas is supplied to the axial passageway substantially at line pressure and throttling in the turn-down ranges occurs at the outlets from the plug, certain of said transverse passageways communicating with said inlet, main outlet passageway and first transverse simmer outlet passageway portion, respectively, in a full on position of the plug, said plug being movable in 4one direction from :said full on position through a turn-down range of both burner sections to a full simmer `position in which certain of said transverse passageways and a further Ypassageway in said plug connect said inlet passageway to said first transverse simmer outlet passageway portion, said further transverse passageway being aligned with saidy first transverse simmer Outlet passageway portion in said full simmer position, said plug being movable further in said one direction from said full simmer position through a turn-downl range of the simmer burner section only to a low simmer position, and said plug including additional passageway defining means extending from said axial passageway to the exterior of thc valve plug in the plane of said second transverse portion of said simmer outlet passageway for supplying gas to the simmer outlet passageway in said low simmer position and in the turn-down range'between the full on and full simmer positions, and flow restricting means arranged to restrict liow through said second transverse portion of said simmer outlet passageway and additional passageway defining means.

6. A double gas valve as claimed in claim 5 wherein said plug is movable further in said one direction from said low simmer position to an off position.

7. A double gas valve as claimed in claim 5 wherein said ow restricting means is located axially of the plug and discharges to an annular passageway in the plug, and wherein said additional passageway defining means includes angularly spaced transverse passageways leading from the surface ofthe plug to said annular passageway.

References Cited in the file of this patent UNITED STATES PATENTS 2,120,864 Kagi June 14, 1938 2,286,766 Sherman June 16, 1942 2,299,624 Harper u Oct. 20, 1942 FOREIGN PATENTS 15,663 Great Britain of 1906