US3817450A - Thermostatically controlled valve especially for engines of motor vehicles - Google Patents

Thermostatically controlled valve especially for engines of motor vehicles Download PDF

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Publication number
US3817450A
US3817450A US00133567A US13356771A US3817450A US 3817450 A US3817450 A US 3817450A US 00133567 A US00133567 A US 00133567A US 13356771 A US13356771 A US 13356771A US 3817450 A US3817450 A US 3817450A
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United States
Prior art keywords
valve
line means
disc
valve seat
line
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Expired - Lifetime
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US00133567A
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English (en)
Inventor
A Mischke
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Daimler Benz AG
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Daimler Benz AG
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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
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/132—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
    • G05D23/1333—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of incoming fluid

Definitions

  • ABSTRACT A thermostatically controlled valve with a valve main closure disc and a valve short-circuit closure disc, especially for the cooling water overflow line from the engine to the radiator of a motor vehicle which is characterized by the combination of an anticipatory control and of a knife edge seat of the valve ring with a sharp edge,v in which the edge and/or the abutment surface for the edge consist of highly resistant, nonoxidizing material.
  • the present invention relates to a thermostatically controlled valve with a valve inain closure disc and a valve short-circuiting or by-pass disc, especially in the cooling water overflow line from engine to radiator of a motor vehicle.
  • a thermostatically controlled valve of the aforementioned type is known in the prior art in which the main closure disc abuts against a knife-edge-like ring of the valve housing and thereby closes the water line to the radiator with a cold engine.
  • the knife-edge of the ring is seated on the flat bottom side of the cylindrically constructed valve main closure disc.
  • the valve by-pass closure disc of this prior art valve is connected with the valve main closure disc by way of spacer pins and interconnected springs and is guided by these pins.
  • thermostatically controlled valves It has also become known in connection with thermostatically controlled valves to utilize a so-called precontrol or anticipatory control for the prevention of the fluttering of the valve main closure disc during the opening operation, by which harmful pressure vibrations are produced.
  • this pre-control or anticipatory control either the valve seat ring or the valve main closure disc is constructed at its rim as knife edge and is seated in the closed condition against the outer surface inclined to the valve axis of the counter-piece whereby the counter-piece is constituted either by the valve main closure disc or by the valve seat ring.
  • dirt particles may become jammed or wedged between the seating surfaces of the valve seat and valve disc whereby larger leakage water quantities may occur.
  • the present invention is concerned with the task to avoid the disadvantages of the known valves and to provide a thermostatically controlled, safely closing valve, in which the flow conditions are improved by a suitable arrangement and construction of the valve discs and of the valve closure parts, and in whichno critical vibrations occur during the opening and closing of the. valve main closure disc and of the valve shortcircuit closure disc.
  • the thermostatically controlled valve in accordance with the present invention which is characterized by the combination of an anticipatory control or pre-control and of a knife edge seat of the valve seat ring with a sharp knife edge, in which the edge and/or abutment surface consist of highly resistant non-oxidizing material.
  • the precontrol may consist of the valve main closure disc which is constructed as pot with walls inclined to the valve axis, and of the sharp highly resistant knife edge of the valve seat ring which in the closed condition rests on the outer wall of the valve main closure disc.
  • the knife edge and the seat thereof on the outer wall of the funnel may consist preferably of V2A- steel and may be finely machined and possibly be hardened.
  • valve main closure disc Since the machining and manufacture of the valve main closure disc from VZA-steel is connected with high costs, it is also possible within the scope of the present invention to make the valve main closure disc of another material and to construct only the seating surface from a separately manufactured ring consisting of highly resistant, non-oxidizing material.
  • Another object of the present invention resides in a thermostatically controlled valve which eliminates the danger of fluttering or pressure vibrations during opening thereof.
  • a further object of the present invention resides in a thermostatically controlled valve, especially for the engines of motor vehicles, which avoids the deposit of dirt at the seating surfaces of valve seat and valve disc and therewith the danger of undesirable water leakages.
  • Still another object of the present invention resides in a thermostatically controlled valve which is simple in construction yet is reliable in operation as regards its completely satisfactory closing.
  • FIG. 1 is a schematic cross-sectional view of an installed thermostatically controlled valve in the cooling water overflow line with a knife edge seat construction in accordance with the present invention.
  • FIG. 2 is a partial cross-sectional view, on an enlarged scale, of a modified construction of the knife edge seat.
  • FIG. 1 illustrates a schematic view of the installed thermostatically controlled valve in the cooling water overflow line.
  • the line 1 leads to the vehicle radiator 30, the line 2 to the cooling water pump 31, and the line 3 comes from the engine 32.
  • the thermostatically controlled valve is closed in the direction toward the radiator 30. Consequently, the cooling water pump 31 pumps the cooling water only through the engine 32.
  • the thermostatically controlled valve essentially consists of a frame body generally designated by reference numeral 4 with an upper bracket 5 and a lower bracket 6.
  • the valve seat ring 7 is clamped fast between the two brackets 5 and 6.
  • a wax cartridge generally designated by reference numeral 8 is secured at the upper bracket 5 by means of a threaded connection 9.
  • the wax cartridge 8 is provided at its upper end with a collar 10 against which is pressed the valve main closure disc 11 by means of a compression spring 12 which is supported at the lower bracket 6 of the frame body 4.
  • the wax cartridge 8 includes a coneshaped ofiset l3 and is extended by a cylindrical portion 14 with a terminal collar 15.
  • valve shortcircuit or by-pass closure disc 16 is guided on the cylindrical portion 14 and is pressed against the collar by means of a compression spring 17. Whereas the compression spring 12 is supported against the lower bracket 6, the compression spring 7 is supported against the cone-shaped offset 13 of the wax cartridge 8.
  • the knife edge 18 of the valve seat ring 7 rests against the outer wall 19 of the funnel-shaped valve main closure disc 11.
  • the knife edge seating surfaces of the funnel and of the knife edge 18 of the valve seat ring 7 are made from highly resistant non-oxidizing material, preferably V2A-steel.
  • FIG. 2 Another knife-edge seat construction is illustrated in FIG. 2 on a larger scale. it differs from the knife edge seating construction according to FIG. 1 in that the knife edge made from VZA-steel is provided at the valve seat ring 7 and is seated in the closed condition of the valve on an abutment ring 22 on the outer surface of the valve main closure disc. Expensive material can be economized by this measure.
  • the guidance of the valve main closure disc 11 is independent of the guidance of the valve by-pass closure disc 16 and also the function of the compression springs 12 and 17 is independent of one another so that also for that reason pressure vibrations are prevented.
  • a thermostatically controlled valve arrangement comprising:
  • first line means for supplying a fluid medium
  • third line means for conducting said fluid medium away from said first line means, said second and third line means being separate from one another,
  • first valve means for selectively blocking said second line means with respect to said first line means
  • said first valve means including a first valve seat and a first valve disc, said first valve disc having a first valve axis extending through a central portion thereof, said first valve seat and first valve disc being movable with respect to one another in the direction of said first valve axis from a position' blocking said second line means with respect to said first line means with said first valve seat sealingly engaging a peripheral edge portion of said first valve disc to an open position .with said first valve seat spaced from said first valve disc to permit fluid flow from said first line means to said second line means,
  • said first valve seat is formed with a sharp edge tapering conically inwardly toward said first valve axis in the direction facing the flow from said first line means, and wherein said peripheral edge portion on said first valve disc tapers conically inwardly toward said first valve axis in the direction of the flow from said first line means such that said first valve seat and first valve disc form an annular funnel shaped opening diverging in the direction of fluid flow when said first valve seat is moved away from said first valve disc,
  • a thermostatically controlled valve arrangement comprising: 1
  • first line means for supplying a fluid medium
  • first valve means for selectively blocking said second line means with respect to. said first line means
  • said first valve means including a first valve seat and a first valve disc, said first valve disc having a first valve axis extending through a central portion thereof, said first valve seat and first valve disc being movable with respect to one another in the direction of said first valve axis from a position blocking said second line means with respect to said first line means with said first valve seat sealingly engaging a peripheral edge portion of said first valve disc to an open position with said first valve seat spaced from said first valve disc to permit fluid flow from said first line means to said second line means,
  • said first valve seat is formed with a sharp edge tapering conically inwardly toward said first valve axis in the direction facing the flow from said first line means, and wherein said peripheral edge portion on said first valve disc tapers conically inwardly toward said first valve axis in the direction of the flow from said first line means such that said first valve seat and first valve disc form an annular funnel shaped opening diverging in the direction of fluid flow'when said first valve seat is moved awa from said first valve disc,
  • first valve seat and first "valve disc are configured such that said funnel shaped opening extends without reduction in size over the entire length of said first valve seat and first valve disc in the direction of flow from the position where said first valve seat and first valve disc abuttingly engage when in said position blocking said second line means with respect to said first line means.
  • characterdisk consist of highly resistant, non-oxidizing material.
  • a thermostatically controlled valve arrangement comprising:
  • first line means for supplying a fluid medium
  • third line means for conducting said fluid medium away from said first line means, said second and third line means being separate from one another,
  • first valve means for selectively blocking said second line means with respect to said first line means
  • thermoresponsive means for controlling said first and second valve means in response to the temperature of the fluid medium in said first line means
  • said first valve means including a first valve seat and a first valve disc, said first valve disc having a first valve axis extending through a central portion thereof, said first valve seat and vfirst valve disc being movable with respect to one another in the direction of said first valve axis from a position blockingsaid second line means with respect to said first line means with said first valve seat sealingly engaging a peripheral edge portion of said first valve disc to an open position with said first valve seat spaced from said first valve disc to per mit fluid flow from said first line means to said second line means,
  • said temperature responsive means is a wax cartridge secured to one of said bracket means, said cartridge being provided witha first collar against which the first valve disc is urged by a spring force, said cartridge including a conical ofi'set as well as an extension provided at its free end with a second collar, said second valve means including a second valve disc which is urged against said second collar by a further spring force independent of said first-mentioned spring force,
  • said first valve seat is formed with a sharp edge tapering conically inwardly toward said first valve axis in the direction facing the flow from said first line means, and wherein said peripheral edge portion on said first valve disc tapers conically inwardly toward said first valve axis in the direction of the flow from said first line means such that said first valve seat and first valve disc form an annular funnel shaped opening diverging in the direction of fluid flow when said first valve seat is moved away from said first valve disc.
  • said temperature responsive means is a wax cartridge secured to one of said bracket means, said cartridge being provided with a first collar against which the first valve disc is urged by a spring force, said cartridge including a conical offset as well as an extension provided at its free end with a second collar, said second valve means including a second valve disc which is urged against said second collar by a further spring force independent of said first-mentioned spring force.
  • a thermostatically controlled valve arrangement comprising:
  • first line means for supplying a fluid medium
  • third line means for conducting said fluid medium away from said first line means, said second and third line means being separate from one another,
  • first valve means for selectively blocking said second line means with respect to said first line means
  • said first valve seat is formed with a sharp edge tapering conically inwardly toward said first valve axis in the direction facing the flow from said first line means, and wherein said peripheral edge portion on said first valve disc tapers conically inwardly toward said first valve axis in the direction of the flow from said first line means such that said first valve seat and first valve disc form an annular funnel shaped opening diverging in the direction of fluid flow when said first valve seat is moved away from said first valve disc,
  • first valve seat and first valve disc are configured such that said funnel shaped opening diverges continuously along the entire length of said valve seat and first valve disc in the direction of said first valve axis from the position where said first valve seat and first valve disc abuttingly engage when in said position blocking said second line means with respect to said first line means.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)
US00133567A 1970-04-14 1971-04-13 Thermostatically controlled valve especially for engines of motor vehicles Expired - Lifetime US3817450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702017759 DE2017759A1 (de) 1970-04-14 1970-04-14 Thermostatgesteuertes Ventil, insbesondere für Motoren von Kraftfahrzeugen

Publications (1)

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US3817450A true US3817450A (en) 1974-06-18

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US00133567A Expired - Lifetime US3817450A (en) 1970-04-14 1971-04-13 Thermostatically controlled valve especially for engines of motor vehicles

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US (1) US3817450A (de)
DE (1) DE2017759A1 (de)
FR (1) FR2089615A5 (de)
GB (1) GB1301763A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952946A (en) * 1974-07-12 1976-04-27 Braukmann Bernhard W Thermostatic valve
JPS5499837A (en) * 1977-12-13 1979-08-07 Daimler Benz Ag Contact temperature control valve device
US4175696A (en) * 1975-11-26 1979-11-27 Braukmann Armaturen Ag Thermostatic valve
WO1980000266A1 (en) * 1978-07-24 1980-02-21 Eaton Corp Thermostatic fluid valve with power element extension and method of constrcting same
US4311272A (en) * 1979-08-08 1982-01-19 Gestra-Ksb Vertriebsgesellschaft Mbh & Co. Kg Bimetallic controlled steam trap
US4318532A (en) * 1979-02-01 1982-03-09 Balzers Aktiengesellschaft High vacuum valve having a metal-to-metal sealing joint
US4319391A (en) * 1978-07-24 1982-03-16 Eaton Corporation Method of constructing thermostatic valve power element extension
US4674679A (en) * 1985-02-12 1987-06-23 Behr-Thomson Dehnstoffregler Gmbh Thermostatic valve for controlling the coolant temperature of an internal-combustion engine
US4784320A (en) * 1987-11-27 1988-11-15 General Dynamics Corp./Space Systems Division X Metal hydride thermostat
US5292064A (en) * 1992-04-03 1994-03-08 Behr-Thomson-Dehnstoffregler Gmbh & Co. Cover for a housed thermostat
US5410991A (en) * 1994-05-05 1995-05-02 Standard-Thomson Corporation Coolant fill housing with integral thermostat
US5419488A (en) * 1993-08-03 1995-05-30 Behr-Thomson-Dehnstoffregler Gmbh & Co. Thermostatic valve
GB2387892A (en) * 2002-02-14 2003-10-29 Daimler Chrysler Ag Thermostatic valve and method for controlling a cooling circuit
US20040007629A1 (en) * 2002-06-21 2004-01-15 Wahler Metalurgica Ltda Constructive arrangement applied to an integrated thermostatic valve attached to its own housing
US20050254973A1 (en) * 2004-05-11 2005-11-17 A.U.K Muller Gmbh & Co. Kg Solenoid valve for fluid media
US20080223316A1 (en) * 2007-03-16 2008-09-18 International Engine Intellectual Property Company, Llc Engine thermostat having bypass pressure-dampening fluid passage
WO2014193346A1 (en) * 2013-05-29 2014-12-04 International Engine Intellectual Property Company, Llc Thermostat
CN106662265A (zh) * 2014-11-03 2017-05-10 宝马股份公司 恒温阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923994C2 (de) * 1979-06-13 1984-01-12 Bayerische Motoren Werke AG, 8000 München Thermostatisches Regelventil für den Kühlkreislauf von Brennkraftmaschinen
FR2646489B1 (fr) * 1989-04-27 1991-07-05 Vernet Procedes Soupape thermostatique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US489324A (en) * 1893-01-03 Benjamin e
US925729A (en) * 1908-09-12 1909-06-22 George F Speer Valve.
CA546502A (en) * 1957-09-24 A. V. Ruhnskold Otto Seat valves
US2829835A (en) * 1954-10-26 1958-04-08 Robertshaw Fulton Controls Co Thermostats
DE1035408B (de) * 1955-04-13 1958-07-31 Wahler Fa Gustav Thermostat fuer den Einbau in die Kuehlwasserleitung einer Brennkraftmaschine
US3172602A (en) * 1962-12-26 1965-03-09 Dole Valve Co Waterline thermostat
US3207437A (en) * 1963-02-28 1965-09-21 Gen Motors Corp Tapered throat section valve thermostat
US3365130A (en) * 1965-08-10 1968-01-23 Dole Valve Co Waterline thermostat

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US489324A (en) * 1893-01-03 Benjamin e
CA546502A (en) * 1957-09-24 A. V. Ruhnskold Otto Seat valves
US925729A (en) * 1908-09-12 1909-06-22 George F Speer Valve.
US2829835A (en) * 1954-10-26 1958-04-08 Robertshaw Fulton Controls Co Thermostats
DE1035408B (de) * 1955-04-13 1958-07-31 Wahler Fa Gustav Thermostat fuer den Einbau in die Kuehlwasserleitung einer Brennkraftmaschine
US3172602A (en) * 1962-12-26 1965-03-09 Dole Valve Co Waterline thermostat
US3207437A (en) * 1963-02-28 1965-09-21 Gen Motors Corp Tapered throat section valve thermostat
US3365130A (en) * 1965-08-10 1968-01-23 Dole Valve Co Waterline thermostat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Material Selector, Materials Engineering Nov. 1970 pp. 71 & 72, A Reinhold Publication *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952946A (en) * 1974-07-12 1976-04-27 Braukmann Bernhard W Thermostatic valve
US4175696A (en) * 1975-11-26 1979-11-27 Braukmann Armaturen Ag Thermostatic valve
JPS5499837A (en) * 1977-12-13 1979-08-07 Daimler Benz Ag Contact temperature control valve device
WO1980000266A1 (en) * 1978-07-24 1980-02-21 Eaton Corp Thermostatic fluid valve with power element extension and method of constrcting same
US4269350A (en) * 1978-07-24 1981-05-26 Eaton Corporation Thermostatic fluid valve with power element extension and method of constructing same
US4319391A (en) * 1978-07-24 1982-03-16 Eaton Corporation Method of constructing thermostatic valve power element extension
US4318532A (en) * 1979-02-01 1982-03-09 Balzers Aktiengesellschaft High vacuum valve having a metal-to-metal sealing joint
US4311272A (en) * 1979-08-08 1982-01-19 Gestra-Ksb Vertriebsgesellschaft Mbh & Co. Kg Bimetallic controlled steam trap
US4674679A (en) * 1985-02-12 1987-06-23 Behr-Thomson Dehnstoffregler Gmbh Thermostatic valve for controlling the coolant temperature of an internal-combustion engine
US4784320A (en) * 1987-11-27 1988-11-15 General Dynamics Corp./Space Systems Division X Metal hydride thermostat
US5292064A (en) * 1992-04-03 1994-03-08 Behr-Thomson-Dehnstoffregler Gmbh & Co. Cover for a housed thermostat
US5419488A (en) * 1993-08-03 1995-05-30 Behr-Thomson-Dehnstoffregler Gmbh & Co. Thermostatic valve
US5410991A (en) * 1994-05-05 1995-05-02 Standard-Thomson Corporation Coolant fill housing with integral thermostat
GB2387892A (en) * 2002-02-14 2003-10-29 Daimler Chrysler Ag Thermostatic valve and method for controlling a cooling circuit
GB2387892B (en) * 2002-02-14 2004-10-13 Daimler Chrysler Ag Thermostatic valve and method for controlling a coolant circuit
US6843210B2 (en) 2002-02-14 2005-01-18 Daimlerchrysler Ag Thermostatic valve and method for controlling a coolant circuit
US20040007629A1 (en) * 2002-06-21 2004-01-15 Wahler Metalurgica Ltda Constructive arrangement applied to an integrated thermostatic valve attached to its own housing
US6772959B2 (en) * 2002-06-21 2004-08-10 Wahler Metalurgica Ltda Constructive arrangement applied to an integrated thermostatic valve attached to its own housing
US20050254973A1 (en) * 2004-05-11 2005-11-17 A.U.K Muller Gmbh & Co. Kg Solenoid valve for fluid media
US7383854B2 (en) * 2004-05-11 2008-06-10 A.u.K Müller GmbH & Co. KG Solenoid valve for fluid media
US20080223316A1 (en) * 2007-03-16 2008-09-18 International Engine Intellectual Property Company, Llc Engine thermostat having bypass pressure-dampening fluid passage
WO2014193346A1 (en) * 2013-05-29 2014-12-04 International Engine Intellectual Property Company, Llc Thermostat
CN106662265A (zh) * 2014-11-03 2017-05-10 宝马股份公司 恒温阀
CN106662265B (zh) * 2014-11-03 2019-10-18 宝马股份公司 恒温阀
US10669921B2 (en) 2014-11-03 2020-06-02 Bayerische Motoren Werke Aktiengesellschaft Thermostat valve

Also Published As

Publication number Publication date
DE2017759A1 (de) 1971-10-28
FR2089615A5 (de) 1972-01-07
GB1301763A (de) 1973-01-04

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