US1842332A - Valve - Google Patents

Description

Jan. 19, 1932. I TE PAS 1,842,332

VALVE Filed Am i1 21, 192

' Patented am-19.1932

. UNITED: STATES PATEN crews;

EDMUND J. TE PAS, OI LAKEWOOD, OHIO, ABSIGNOR TO THE PATROL VALVE COMPANY,

OF CLEVELAND, OHIO, A. CORPORATION OF OHIO 1 v vuvn 7 This invention relates to improvements in fuel control systems for gas burning appliances and in particular control valves used in connection therewith.

The object of this invention is to provide-v a fuel control for gas burning appliances, that safely and automatically-controls the flow of gas to said burner, that can be manually controlled. independentlyof its automatic operating mechanism, and that prevents the'admission of gas to themain burner or burners by extinguishmeni' of thepilot light. Such a system is described and claimed in my .copending applicationSerial Number 271,802, filed April 21, 1928.

With the above mentioned and'other ob jects in view, the. invention consists in the novel construction, arrangement and combination'of parts, hereinafter described, illuseo trated in some of its embodiments in the accompanying drawings and particularly pointed out in the appended claims. Referring to the drawings illustrating a form of my invention, Fig. 1 is a side elevational view in section of a flame or thermally actuated valve. Fig. 2 is an end elevational view of the valve body of the device shown in Fig. 1.- Fig. 3 is a side elevational view of the'distant control for the thermally actuao ated valve. Fig. 4 is an end elevationalview of the control shown. in Fig. 3.

The device shown in the drawings is adapted for use in connection with gas burning appliances inlwhich the main burner of 5 the appliance is provided with a constantly burning pilot light for ignition purposes. This device is particularly useful in connection with other gas burning appliances particularly where it-is desirable to control the operation of the appliance from a distant point.

The flame or thermallyi actuated valve shown in detail in the enlargedsectional view Fig. 1, consists of a valve casing 1 provided with an inlet passage 2 and a main outlet ing the passage 3 and has a. valve seat 4 formed integral y therein. The open endof 'a com .trally, bored sleeve valve 5 is provided with a valve seat fi-which is in axial alignment with thevalve seat. ,5l This sleeve valve constiptutesan auxiliary outlet passage from the valve casing 1.

A disk shaped valve head 7 faced on each side with a yielding material, 8, such as leather, is positioned between the" valve seats 4 and 6 and coacts ith them to control the flow of fluid between the inlet passage and the outlet passages in communication with these seats. The valve head 7 is mounted on a valve stem 9 bymeans of aballand socket joint 10 which allows the valve head to adjust itself to its seats 4 and 6. The valve casing 1 is mounted on a valve actuating mechanism housing 11 by means of screws 12.

An operating gas burner 13 is provided .65 to heat a bimetallic thermally responsive element 14 whichis located above said burner in the housing 11 and has one end secured thereto by a bolt 15. This thermal element is of the usual" construction and is made in the present instance of a laminated strip of metalone side 16, having a high coeflicient of'expansion' as monel metal or brass and the other *side 17 having a low coeificient of expansion as Invar or 36% nickel steel, havabove elements suitably joined together. By reason of the differential expansion of the two difl'erent metals of which the strip is made, power is furnished to operate the valve mechanism by the deformation of the thermostatic strip 14'by the heat from the burner 13. Theiree end of the thermal'element is p-ivotally connected at 18 to an adjust- .able link 19 which is in turn pivotally connected at 20 to an oscillating lever 21. A resilient lever comprising the two elements 22 and 23 and aspring 24 bears at its extremities against the-knife edge of the adjustable pin 25 and a knife edge of the oscillating lever 21 and tends to urge this lever to the end of .the arc of its travel. The adjustable pin is carried by an internally bored set screw 26. This set screw is threadably received in the housing 11 and provides a means of adjustment for the pin 25. An internally threaded cap 27 provides a locking means for the screw 25 The oscillatin lever 21 has a cut out portion through which the valve stem 9 projects.

This lever is provided-between its ends with contact edges.28 to engage with the annular flanges 29 and 30 of the internally threaded sleeve 31, which is locked in position on the valve stem 9 by means of a-lock nut 32. A

packing diaphragm 33 is clamped against a.

shoulder formed on the. valve stem by of the sleeve 34 and lock nut 35.

34 is journaled in the threaded p11 g 36 which serves to hold the outer edge of the iaphragm 33 in fluid tight engagement with the bored out portion 7 of the valve casing 1. By

securing the diaphragm 33in the. manner de- I to the element 39 by nut 42. The sleeve valve '5 is provided with a central bore 43 Wl1ic-h. communicates with the outlets 44' which. in turn serve to establish communication be-- tween the open end of the sleeve valve and the conduit 45. The conduit 45 is connected to a .burner supporting block 46 secured to thehousing 11- by a bolt 47 The metal heat-' ing burner 13 is carried by the block 46 and is in communication with the feed line 45. .A needle valve 48 comprising a valve casing 49 and an adjusting .needle 50 i connected at its inlet end to the member 4 and at its outlet endto the conduit 45. The purpose of th1s valve is to controlthe height of theflame of the valve actuating burner 13 when gas is "admitted to this burner byway of 'the sleeve valve 5, valve casing 49 and conduit 45.

A packing diaphragm 51 is securedto the sleeve valve by means of nut 52. The diaphragm 51.is clamped at its outer edge between the elements 39 and 41 and serves'to prevent the leakage ofgas fromthe valve casing 1 to the conduit 45 when the valve is closedi Leakage of gas past the reduced port1on 40 of the valve stem is prevented by 80 means of ,a washer 53 and shoulder 54 formed ,on the sleeve valve. In the open position of the sleeve valve the shoulder 54 contacts with the washer- 53 which is made of a yielding material, such as leather,-and prevents the escape of gas to the atmdsphere frbm the element41.."

to contact with the reduced portion 40 of "the sleeve valve for the actuation of same.

The lever 55 is controlled by and connected to one end of the chain which is secured at its other end to one arm of the bell crank 61 which is pivoted at 62 in the box 63 and the handle 64 is secured to the other arm of the bell crank. This latter arm is provided with a projection 65 which is adapted to engage with either end of the raised portions 66 of the plate 67 so that the handle 64 is secure- 1y held in either one of its extreme positions. A weight 68 is secured to the lever 55 and chain 60 by means ofa rod 69. 1 The box 63 for the bell crank 61 comprises a cover 70 and a baseplate 71, the latter being adapted to be secured to any suitable support or wall board such as 72. The object of the wei ht '68 and levers 55 and 61 is-to provide a istant control means for actuatmg the sleeve valve 5, the function of which will be described presentlg. A constantly urning pilot 73 in communication with the conduit 74 and under control of a needlevalve of the type shown is positioned in the heater casing 75 between the main heating burner 76 and the small valve actuating burner 13. :This pilot serves the dual purpose of igniting the main heating burner 76 as well as the burner 13. The pilot 73, is secured to'the heater casing by means of an L fitting 77 and a nut 78. l 7

The operation of the device is as follows:

If it is desired to put the main burner into operation, the constantly burning pilot light 73 is first ignited. A manually operable or othermain control valve is now opened admitting gas to the valve 1. The thermally actuated valve head 7 in this instance is in p the position'shown in Fig. 1 and as admitted to it in this position passes to t e valve actuating burner 13 by way of the central passage 43 of the open sleeve valve 5 and the conduit 45. Gas issuing from the burner 13 1s ignited by the constantly burning P110573 by way of the opening 79 formed in the eas- The flame from the burner 13*now serves I to heat the thermal element 14 which is po- 'sitioned' directly above this burner, Asthe thermal element which is a composite stri of two metals .16 and 17 becomes heated, 1t shifts to the left of the position shown in Fig. 1 by reason of the side 16 of the strip having a higher coeflicient of expansion than the side 17. f This movement is communicated to the adjustable link 19 and oscillating lever 21 and the lever." defined by the element 22, 23 and24. Upon passing their dead centenfl position, the position wherethe two levers are in line, the spring 24 shifts the levr 21m the extreme left hand position carrying with it the valve stem 9 and its valve head 7. This ment by the spring 38, md'ves from itsseat 6 action serves to open the valve defined by the valve seat 4 and the valve head 7 allowing gas to pass from the inlet 2 to the outlet end of the valve which is connected to the. main heating burner 7 6 in any convenient manner. Thegas which is now admitted to the main burner 76 is ignited by the constant- 1y burning pilot 73and serves to supply heat to the system with which it is used.

The valve head 7 in opening communica tion between the source of gas supply and the main heating burner at the same time seated itself on the valve seat 6 of the sleeve .5 cutting off the supply of gas tothe valve actuating burner 13. This allows t thermostatic' element 14 of. the valve cool and start to return to .its original posi ion. After a slight movement of the therm static ele-:

ment' the valve head 7 which is caused to followthe movement of the thermostatic eleand gas is agaln admitted to the burner [13. It will be seen that'the valve head 7 and valve seat 6 together with the associated valve actuating mechanism provide a graduating valve for the burner 13 measuring the proper amount of gas to this burner to maintain the thermally actuated valve 1 in its open position and at the same time preventing the thermostatic element 14 from becoming overheated.

. When it is desired to extinguish the burner 76 the main control valve is closed, shutting off the supply of gas to the thermally actuated valve and the main heating burner, This action also eirtinguishes the flame of the burner 13 allowing the thermostatic element controlled thereby to cool and shift to the right closing the valve defined by the valve seat 4 in valve -head"7 so that before gas can again be admitted to the main burner it will be necessary to repeat the cycle previouslydescribed.

Where it is desired to" control the operation of the burner 76 from a distant point the bell crank handle 64 may be shifted to either one I of its limiting positions. This action in one instance serves to clamp the valve-head 7 between the valve seats 6 and 4 in the closed or right hand position of the handle 14, cutting off the supply of gas to the main heating burner 7 6 and the valve actuating burner 13.

In the open position of the handle 64 "the sleeve valve 5 is in the position shown in Fig.

1 allowing gas to be passed to theburner 13- .to open the thermally actuated valve.

By using the thermally actuated valve alone and operating it with the manual control, it is possible to provide a safe distant control for the "non-automatic type of water heaters and; other gas burning appliances which do not have a thermostaticvalve that is responsive to the temperature of medium shifted to the left by the spring 38 admitting gas to the burner 13. This gas is ignited by the constantly burning pilot 73 and serves to open the flame actuated valve and admit gas to the main burner. When it is desired;

to shut oil the gas the lever 55 is lowered by means of the distant control handle 64 and weights 68 and the sleeve. valve 5 seats against the valve head 7. This causes the valve head 7 to seat against the, valve seat 4 thus cutting 011" the supply of gas to the main burner and the valve actuating burner. Furthermore, it is to' be understood that the particular forms ofapparatus shown and described, and the particular procedure set forth, are presented for purposes of explanation and illustration and that various modifications. of said apparatus and procedure can be madewithout departing from my inven- 7 tion as defined-in the appended claims.

Having described my invention, what I claim is 1. In a three-way valve, a valve casing having an inlet passage and a main and an auxiliary outlet passage, a valve seat formedin said casing for the main outlet passage, an axially movable valve, seat for said auxiliary outlet passage, a valve head cooperating with said valve seats to control fluid flow between the inlet and outlet passages, means. to actuate the valve head and means to move the axially movable valve seat of the auxiliary outlet passage to clamp said valvehead between both of said valve seats cutting off communication between the'inlet and both outlet passages.

2. Ina three-way valve, a valvecasing havmg an inlet passage and amain and an auxiliary outlet passage, amovable valve head controlling the flow of, fluid from said inlet through both said outlet passages, and valve seats for said outlet passages one of which is movableto efi'ect closure of one of said outlet passages independently of the movement of said valve head.

3. In a valve, a valve casing provided with one inlet and two outlet passages, valve seats housed in said casingior-said outlet pasj sages, a valve head coacting with said valve seats to control -fluid flow between said inlet and said outlet passages, means to actuate the valve head to move it into engagement with either one of said valve seats, and means to effect the" simultaneous engagement of said valve head with both of said valve seats.

- 4. A valve comprising," a valve body having a fixed an d an operably movable valve seat housed therein, a valve head between sai-ds'eats and mounted for movement toward one of said seats and away from the other of said seats actuating means connected to the valve head, and additional means including I ating with said valve seats to selectively or simultaneously close the outlet passages con- Erolled by said valve. seats and said valve ead.

ing one inlet an-d'two outlet passages, valve ports for said outlet passages, a single valve head movably mounted intermediate said ports.

ports .to control the flow of fiuidvfrom said inlet through both of said outlet passages, means to actuate the valve head, and means cooperating 'with said valve head to efiect the simultaneous closure of both of said valve 7. In a three-way valve, a valve casing havingan inlet passage and amain and an auxiliary outlet passage, a valve seat formed in saidcasing for the'main outlet passage, anaxially movablevalve seat for the auxiliary outlet passage, a valve head cooperatmg with said valve seats to control fluid flow between the inlet and outlet passages, 'means communication between the inlet and both I to actuate valve head, and means to move the axially movable valve seat of the auxiliary outlet passage to clamp said valve head between both of said valve seats cutting oil outlet passages. 4

8. In a three-way valve, a valve casing having an inlet and a main and anauxiliary outlet passage, a valve seat in said casing for said main outlet passage, an axially movable hollow sleeve having a valve seat formed on its inner end mounted for reciprocating ,movement in said auxiliary outlet passage,

a movable valve head and associated valve stem carried in said valve casing and cooperating with said valve seats to control fluid flow between the inlet and the outlet pas sages, means to'actuate the valve stem and g 6. In a three way valve, a valve casing havmovable valve seat to cause said valve head.

to cover one or both of said valve seats. a

10. A valve structure comprising, a valve body with an inlet'passageway and a pair-of outlet passageways, valve seats for said outletpassageways, a valve head mounted for reciprocation betweensaid valve seats,- means to actuate the valve head to efiect the uncov ering of one or both of said valve seats and supplemental means to effect the covering of one or both of said'valve seats by said valve head. I In testimony .EDMUND J. TE PAS.

'associated valve head, and resilient means other.

i acting directly against said valve-and movable sleeve to urge said valve 'head and the away from each valve seat of said sleeve 9. A valve structurecomprising a valve one of said outlet passageways, 'a movable valve seat for the other of said'outlet pas: sageways, a valve head forsaid valve seats, means to actuate said valve to uncover one 85 of said valve seats and toengage the other of said valve seats and means to actuate said body with an-inlet passageway and a pair of outlet passageways, a fixed valve seat for whereof I 4 aflix my signature.

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