US2842317A - Thermal valve with safety lock - Google Patents

Thermal valve with safety lock Download PDF

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Publication number
US2842317A
US2842317A US427926A US42792654A US2842317A US 2842317 A US2842317 A US 2842317A US 427926 A US427926 A US 427926A US 42792654 A US42792654 A US 42792654A US 2842317 A US2842317 A US 2842317A
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US
United States
Prior art keywords
valve
movable valve
spring
attached
valve member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US427926A
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English (en)
Inventor
Charles W Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Standard Thomson Corp
Original Assignee
Standard Thomson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Thomson Corp filed Critical Standard Thomson Corp
Priority to US427926A priority Critical patent/US2842317A/en
Priority to GB3694/55A priority patent/GB790054A/en
Priority to FR1124052D priority patent/FR1124052A/fr
Priority to BE537914A priority patent/BE537914A/fr
Application granted granted Critical
Publication of US2842317A publication Critical patent/US2842317A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
    • G05D23/022—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed within a regulating fluid flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S236/00—Automatic temperature and humidity regulation
    • Y10S236/02—Fail safe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • This invention relates to a thermal responsive fluid controlvalve.
  • the invention relates particularly to a thermostatic fluid control valve for the cooling system of an internal combustion engine; however, the invention is not so limited in that it may be applied to other types of fluid systems.
  • the invention relates still more particularly to theinventionidisclosed in my copending application'Serial No. 358,059, filed on or about May 28, 1953, now Patent No. 2,777,638, for Valve.
  • a thermostatic fluid control device positioned within the cooling system regulates the temperature of the engine by governing the flow of fluid within the'cooling system'and thus controlling the temperature of the fluid within the cooling system.
  • the cooling system of the engine is sodesigned'that under normal operating conditions the cooling system can retain the temperature of the engine at a predetermined value.
  • the very high temperature to which the thermostatic control valve is heated causes considerable damageto the thermostatic valve and the thermostatic valve does-not operate properly.
  • the thermostatic valve maybe so injured or damaged that it is forcedto a closed position even though the temperature of the cooling fluid is very high.
  • the circulation of cooling fluid which is assisting to some'extent in cooling the engine, is completely shut off so that the temperature of the engine furtherincreases causing greater damage to the internal combustion engine.
  • thermostaticfluid control valve is one which is provided with fail safe means or, in other words, with means by which it will remain fully open after it is so actuated'by extremely high temperatures within-the cooling system of the engine.
  • a desirable fail safe fluid control valve for engines is also one which remains fully open when damage occurs to the valve. When the'greatest amount of circulation withinthe cooling system is permitted, when the engine is heating excessively, greatest protection to the engine is therefore provided.
  • an object of this invention is to provide a thermal-responsive fluid control valve which has means by which thecontrol valve is held in the extreme open position after conditions have caused the valve toopen to such an extent.
  • Another object of this invention is to provide a thermal responsive fluid control device which fails safe and remains open even though damaged by excessive temperatures.
  • Another object of this invention is to provide a fluid control device which is small in sizeand compact.
  • thermo static control device which, under normal operating conditions, has durability and long life.
  • Another object of this invention is to provide a thermal responsive fluid control valve which has a minimum number of parts and which may be assembled and produced at low cost.
  • Figure 2 is a sectionalview taken substantially online 2-Z of Figure 1.
  • Figure 3 is a top plan view of a thermal responsive control valve of this invention.
  • Figure 4 is a bottom view of thefluid control device, 7
  • Figure 5 is a sectional view,,simil ar to Figure 2, showing the position of the elements of the device during response of the device to an increase in temperature.
  • Figure 6 is a sectional view similar to Figure 5 showing the position of the elements of the device when the device is subjected to such a high temperaturethat the valve lockingmeans retains the valve in open position.
  • Figure 7 is a fragmentary sectional view with parts shown in substantially the same position as in Figureo after the device has been subjected tofa very high temperature and has then been permitted to cool.
  • FIG. 8 is a bottom view showing the preferred modification of the thermostatic fluid control valve made according to this invention. 7
  • Figure 9 is a side elevational view, with parts shown in section, showing the preferred modification of the loclfout means of this invention with the valve in closed po sition.
  • Figure 10 is a fragmentary side elevational view, similar to that of Figure 9, showing the movable valve member in an open position.
  • Figure 11 is a fragmentary side elevational view. similar to that of Figure 10 and showing the movable valve member in the locked open position.
  • 'the'valve of this .-invention comprises a body member 10 provided with an annular flange portion 11 having an outwardly extending annular projection 12 normal thereto.
  • At- ;tached to the inwardly extending rib 13 and positioned V onone, side surface thereof is an arcuately formed bridge member 15 which is attached at each end thereof to the inwardly extending rib 13.
  • the arcuatelywfor-med .bridge member 15 comprises an elongate U-shaped mema rod member 17 having a threaded portion18.
  • a movable valve member 26 is urged toward engagement with the valve seat 14 by means of a helical spring 28.
  • One end of thehelical spring 28 encircles the guide ring 20 and abuts the arms 19. The other end of the helical spring 28 engages the movable valve member 26.
  • av casing or container member 30 having an upper enclosing wall 31.
  • the construction of the container member 30 with the contents therein is similar to the container and contents disclosed in my copending application Serial No. 333,707, filed on or about January 28, 1953, now Patent No. 2,806,375.
  • the container 30 is provided with an aperture in the upper enclosing wall 31 thereof through which the rod 17 slidably extends into the container 30.
  • An elastic body member 34 within the container 30 has a flange member 36 which engages the upper enclosing wall 31.
  • the lower end of the elastic body member 34 abuts an end wall 37 of the container 30 which is opposite the enclosing wall 31.
  • the rod 17 is positioned within an elongate hole 38 within the elastic body 34.
  • the elongate hole 38 extends a portion of the length of the elastic body 34.
  • an expansiblecontractible material 40 between the inner side walls of the container 30 and the elastic body member 34.
  • the movable valve member is continuously actuated by the expansive material 40 to such a position with respect to the valve seat 14 that the circulation of fluid within the cooling system of the engine is properly regulated.
  • the temperature of the cooling fluid in the cooling system is properly controlled.
  • the volume of expansive material within the container 30 with respect to the volumetric capacity of the container 30 is so adjusted that the movable valve member 26 begins to open at a predetermined temperature. This temperature is called the opening temperature of the thermal responsive fluid control device.
  • the expansible material 40 expands.
  • the expansion of the expansible material 40 causes high pressure to be exerted upon the elastic body member 34 so that the rod 17 has a great amount of pressure exerted upon it through the elastic body 34.
  • the pressure exerted upon the rod 17 by the expansion of the expansible material 40 tends to close the hole 38 within the elastic body member 34 and thus tends to move the rod 17 with respect to the container 30. Due to the fact that the rod 17 is firmly attached by means of the threaded portion 18 thereof to the arcuate bridge 15, the rod 17 cannot move. However, the container 1 30 issecured only to the movable valve member 26.
  • the container 30 moves downwardly carrying with it the movable valve member 26 which is attached thereto.
  • the greatest extent of movement of the movable valve member 26 is substantially the position shown in Figure 5.
  • the movement of the container is guided by the annular guide ring 20.
  • a lock spring member 50 comprising a single resilient wire, has two ends 52 thereof inserted through a pair of apertures in one of the support arms 19 adjacent the rib 13. The two ends 52 of the lock spring member abut the flange member 11 causing the other portions of the spring 50 to be resiliently positioned, as shown in Figure 2.
  • a hook or shoulder 54 of the lock spring 50 is formed adjacent an arcuate portion 53 and is adapted to receive the movable valve member 26 upon extreme movement of the movable valve member 26.
  • .expansible material 40 within the container 30 causes '4 the movable valve member 26 to continue to move away from the valve seat 14.
  • the movable valve member 26 When the movable valve member 26 normally moves to an open position it may engage the lock spring member 50, as shown in Figure 5. However, when abnormal engine operation excessive heating thereof occur, the movable valve member 26 opens so very greatly and moves so far from the valve seat 14 that the movable valve member 26 moves past the arcuate portion 53 and is engaged by the shoulder 54 of the spring 50 as shown in Figure 6. Such abnormal operation of the engine is usually indicative of serious trouble within the engine.
  • the spring member 50 locks the movable valve member 26 open so that the greatest amount of cooling fluid may be permitted to circulate through the port formed by the valve seat 14.
  • thermostatic valve of this invention After such excessive temperatures occur within a cooling system of an engine that a thermostatic valve of this invention locks open, as shown in Figure 6, it is usually necessary to perform repair work upon the engine.
  • the operator of the engine or the mechanic should determine the condition of the thermostatic valve and should reset the movable valve member 26 to normal operating position by removing the movable valve member 26 from the shoulder 54 if the thermostatic valve is not damaged.
  • the operator or mechanic can perform the inspection and resetting of the valve by opening the cooling system to make the thermostatic valve accessible. If the movable valve member 26 is not reset to normal operating position and the engine later operates satisfactorily, the
  • movable valve member 26 being locked open, permits full circulation of cooling fluid and the engine does not operate at the proper temperature. This low temperature of engine operation should indicate to the operator that something has occurred in the engine performance to warrant inspection of the engine and the thermostatic valve.
  • the movable valve member 26 is retained in a .wide open position, as shown in Figure 7, and the expansible-contractible material 40, being cooled, releases pressure from the elastic body member 34 so that the elongate hole 38 within the elastic body 34 will be partially unoccupied, as shown in Figure 7.
  • the thermal responsive fluid valve of this invention fails safe and assists in the protection of the engine even though the thermal responsive fluid valve has become damaged by a defec tive condition within the engine.
  • the lockout spring of the preferred modification is substantially the same as the lock-out spring of the preferred embodiment.
  • the preferred modification is provided with a pair of support arms and 62 which are similar to the support arms 19 of the preferred embodiment.
  • the support arm 60 is provided with a pair of slots 64 adjacent the guide ring 20. These slots 64 retain and guide the movement of a lower portion 65 of a lock spring 66 which is similar to the lock spring 50 of the preferred embodiment.
  • the lock spring 66 has an engaging shoulder 67 similar to the shoulder 54 of the spring 50.
  • the extreme movement of the movable valve member 2 6 to such aposition that it is engaged by the shoulder 67 of the lock spring 56 occurs only upon very abnormal conditions.
  • .thelockspring . which retains the movable valve member 26 in open position need not necessarily be shaped or formed as shown in the figures, but any othersuitable resilient member also maybe applied.
  • a fluid control valve comprising an annular valve seat member provided with an annular flange extending therefrom, a plurality of support members attached to the valve seat member and extending on either side therefrom, a movable valve member engageable with the valve seat member, a casing member having rigid end walls attached to the movable valve member, a guide member attached to one of the support members, the guide member extending around the outer periphery of the casing member adjacent thereto, a body of elastic material within the casing member contacting opposite end walls of the casing member, an expansive material within the casing member engaging the body of elastic material, a rod member attached to some of the support members, the rod member slidably extending through one of the end walls of the casing member contacted by the body of elastic material, the rod member having a tapered end extending into the body of elastic material, resilient means engaging the movable valve member and the support members to which the guide member is attached, the resilient means urging the movable valve member toward the valve seat member, and a spring member
  • a fluid control valve comprising a valve seat having a flange at the periphery thereof and extending normal thereto, a pair of support arms attached to the valve seat and extending therefrom, the arms having a juncture at a position disposed from the valve seat, a movable valve member disposed between the valve seat and the juncture of the arms and engageable with the valve seat, thermal responsive actuating means attached to the movable valve member, one of said support arms having an aperture therethrough, a spring member extending through said aperture and resiliently engaging the flange, the spring member having a portion thereof resiliently extending toward the juncture of the arms, and a hook member on said portion of the spring memher, the hook member extending into the path of move- "6 ment of the movable valve member and adapted to retain the movable valve member in open position.
  • a thermal responsive fluid control device of the type provided with a body member havinga valve seat forming a fluid port, arnovable valve member engageable with the valve seat to close the fluid port, thermal responsive means attached to the movable valve member for moving themovable valve member into closedposition and into open position in response to variations in temperature of the thermalresponsive means, support means attached to the body member, guide means attached to the support means for guiding movement of the movable valvemember, the combination comprising a springmember extending through the support member and engaging the body member, the spring member being provided ,withta shoulder for engaging themovable valve member to retain the movable valve member in open position, whenrthe temperature to which the device is subjected reaches a predetermined abnormal value.
  • a fluid control valve comprising a valve seat member, an annular flange 'memberwattached to the valve seat member substantially normal thereto, support members attached to the valve seat member and extending on either side of the valve seat member, a movable valve member adapted to abut the valve seat member, a casing having rigid walls attached to the movable valve member, a body of elastic material Within the casing abutting opposite portions of the casing, an expansive material surrounding the elastic material, a rod member positioned within the elastic material and slidably extending through a wall of the casing, the rod member being attached to one of the support members, guide means attached to one of the support members for guiding the movement of the casing member, and an elongate resilient wire member having its two ends extending through one of'the support members and engaging the flange of the valve seat member, the midportion of the wire being positioned adjacent the last said support member, the wire being provided with a shoulder for engagement of the movable valve member to retain the valve member in open position.
  • a fluid control valve of the type provided with a housing member having a valve seat defining a flow passage and a linearly reciprocable flow control member the combination including a movable valve member, a container member having solid end walls attached to the movable valve member, an elastic body within the container engaging opposed end walls thereof, one of said solid end walls engaged by the elastic body having an aperture therethrough, an elongate hole within the elastic body extending a portion of the length thereof and aligned with the aperture of the end wall, a rod slidably extending through the aperture of the end wall and into the elongate hole of the elastic body, a plurality of support arms attached to the housing member and extending therefrom, the rod being attached to one of the support arms, a guide member attached to another of the support arms for guiding the movement of the movable valve member, and a resilient locking mem ber loosely attached to one of the support members, said support member being provided with a notch slidably retaining a portion of said locking member, the locking member being provided with
  • a fluid control valve comprising an annular valve seat member providing a fluid flow passage therethrough, a flange attached to said valve seat member, a pair of support members attached to the valve seat member and extending in the direction of fluid flow through the How passage formed by the valve seat member, a second pair of support members attached to the valve seat member and extending therefrom in a direction opposite the direction of fluid flow, a movable valve member engageable with the valve seat member and movable against the direction of fluid flow during opening movement of the movable valve member, a casing member attached to the movable valve member and provided with a rigid apertured enclosing wall adjacent thereto and parallel therewith, a guide member attached to the second pair of support members and substantially concentric with the movable valve member, the guide member encircling the outer periphery of the casing member adjacent thereto, a body of elastic material within the casing member contacting opposite end walls of the casing member, an expansive material Within the casing member engaging the body of elastic material, a rod member attached
US427926A 1954-05-06 1954-05-06 Thermal valve with safety lock Expired - Lifetime US2842317A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US427926A US2842317A (en) 1954-05-06 1954-05-06 Thermal valve with safety lock
GB3694/55A GB790054A (en) 1954-05-06 1955-02-08 Improvements in or relating to thermal responsive valve
FR1124052D FR1124052A (fr) 1954-05-06 1955-02-17 Perfectionnements apportés aux soupapes thermostatiques
BE537914A BE537914A (fr) 1954-05-06 1955-05-05 Perfectionnements apportés aux soupapes thermostatiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427926A US2842317A (en) 1954-05-06 1954-05-06 Thermal valve with safety lock

Publications (1)

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US2842317A true US2842317A (en) 1958-07-08

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US427926A Expired - Lifetime US2842317A (en) 1954-05-06 1954-05-06 Thermal valve with safety lock

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US (1) US2842317A (fr)
BE (1) BE537914A (fr)
FR (1) FR1124052A (fr)
GB (1) GB790054A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966169A (en) * 1958-06-19 1960-12-27 Clark B Reece Combined insulation trim and damper positioning means for ducts
US3173609A (en) * 1961-04-03 1965-03-16 Dole Valve Co Waterline thermostat
US3229909A (en) * 1963-07-05 1966-01-18 Sterling Automotive Mfg Compan Thermostatic valve
US3300134A (en) * 1963-10-23 1967-01-24 Wahler Gustav Thermostatic control valve
US4453668A (en) * 1982-11-10 1984-06-12 Caltherm Corporation Fail-safe thermostatic valve
US5294046A (en) * 1993-02-23 1994-03-15 Joseph Fishman Fail-open locking element and thermostat incorporation same
US5381953A (en) * 1993-02-23 1995-01-17 Fishman; Joseph Fail-open locking element and thermostat incorporating same
US5503329A (en) * 1994-11-25 1996-04-02 Saladino; Paul D. Automotive thermostat

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295940B (de) * 1963-10-23 1969-05-22 Wahler Fa Gustav Thermostatischer Regler
DE1195120B (de) * 1963-12-20 1965-06-16 Hans Rueter Selbsttaetiges Fuellventil fuer Gefluegeltraenken u. dgl.
DE1240337B (de) * 1964-06-30 1967-05-11 Mecano Bundy Gmbh Thermostatisches Ventil
GB2202613A (en) * 1987-03-23 1988-09-28 Gsa Ind Relief valves
CA2089704C (fr) * 1993-02-17 1998-08-04 Joseph Fishman Element de verrouillage en position ouverte en cas de defaillance et thermostat connexe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US619346A (en) * 1899-02-14 Automatic damper
US1709473A (en) * 1925-11-03 1929-04-16 Elinore E Harde Shutter-operating device or attachment for cameras
DE573672C (de) * 1932-03-13 1933-04-04 Berlin Karlsruher Ind Werke Ak Elektrisch gesteuertes Ventil mit elektrisch geheiztem Thermostaten
US2356958A (en) * 1942-03-27 1944-08-29 Detroit Lubricator Co Valve
US2704944A (en) * 1953-01-26 1955-03-29 Girling Ltd Means for actuating a hand-brake on a vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US619346A (en) * 1899-02-14 Automatic damper
US1709473A (en) * 1925-11-03 1929-04-16 Elinore E Harde Shutter-operating device or attachment for cameras
DE573672C (de) * 1932-03-13 1933-04-04 Berlin Karlsruher Ind Werke Ak Elektrisch gesteuertes Ventil mit elektrisch geheiztem Thermostaten
US2356958A (en) * 1942-03-27 1944-08-29 Detroit Lubricator Co Valve
US2704944A (en) * 1953-01-26 1955-03-29 Girling Ltd Means for actuating a hand-brake on a vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966169A (en) * 1958-06-19 1960-12-27 Clark B Reece Combined insulation trim and damper positioning means for ducts
US3173609A (en) * 1961-04-03 1965-03-16 Dole Valve Co Waterline thermostat
US3229909A (en) * 1963-07-05 1966-01-18 Sterling Automotive Mfg Compan Thermostatic valve
US3300134A (en) * 1963-10-23 1967-01-24 Wahler Gustav Thermostatic control valve
US4453668A (en) * 1982-11-10 1984-06-12 Caltherm Corporation Fail-safe thermostatic valve
US5294046A (en) * 1993-02-23 1994-03-15 Joseph Fishman Fail-open locking element and thermostat incorporation same
US5381953A (en) * 1993-02-23 1995-01-17 Fishman; Joseph Fail-open locking element and thermostat incorporating same
US5503329A (en) * 1994-11-25 1996-04-02 Saladino; Paul D. Automotive thermostat

Also Published As

Publication number Publication date
FR1124052A (fr) 1956-10-03
GB790054A (en) 1958-02-05
BE537914A (fr) 1955-11-05

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