US3741172A - Cooling system expansion chambers - Google Patents

Cooling system expansion chambers Download PDF

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Publication number
US3741172A
US3741172A US00157168A US3741172DA US3741172A US 3741172 A US3741172 A US 3741172A US 00157168 A US00157168 A US 00157168A US 3741172D A US3741172D A US 3741172DA US 3741172 A US3741172 A US 3741172A
Authority
US
United States
Prior art keywords
chamber
tube
pressure
valve
relief valve
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
US00157168A
Other languages
English (en)
Inventor
B Andreux
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.)
Renault SAS
Original Assignee
Renault SAS
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
Priority claimed from FR7028846A external-priority patent/FR2102469A5/fr
Priority claimed from FR7042698A external-priority patent/FR2115641A6/fr
Application filed by Renault SAS filed Critical Renault SAS
Application granted granted Critical
Publication of US3741172A publication Critical patent/US3741172A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent valves

Definitions

  • the improvements forming the object of the invention consist, in an expansion chamber, in connecting the chamber to the cooling system by a tube going down to the bottom of the chamber, a pressure limiting valve being fitted between the said system and the expansion chamber. A valve allowing air to come in from the outside if a pressure-drop occurs in system is fitted in chamber stopper. 7
  • the improvements consist also, as a prefered alternative solution, in fitting the connecting pipe from the radiator, the valve and the immersed tube of expansion chammber to the three ends of a Y adaptor in the expansion chamber above liquid level, and relate particularly to the best mode of execution of this patent in which high and low pressure valves are connected with a by-pass tube under the stopper but above maximum liquid level at the top part of tube that goes down to bottom of chamber.
  • the low-pressure valve is fitted inside the high-pressure valve, the two valves being connected directly by the by-pass tube to the tube going down to the bottom of the expansion chamber.
  • FIG. 1 shows the general arrangement forming the object of the patent
  • FIG. 2 shows a prefered solution
  • FIG. 3 shows, as an example, curves for pressure and chamber stopper and allows air to enter from the outside when a pressure drop occurs in the system.
  • relief valve 3 and low-pressure valve 4 are fitted as a combined assembly to stopper or plug 5 at the top of expansion chamber, the relief valve being connected to the top part of tube going down to bottom of chamber with a by-pass tube 6 under stopper 5.
  • Solid line a represents the pressure rise over a period of time in the expansion chamber and dashed line b illustrates the corresponding temperature rise for an expansion chamber that is not equipped according to the present invention.
  • the pressure in the chamber is constant at the valve opening pressure d as shown by the solid line and the temperature remains at a constant value c shown by the dashed line.
  • expansion chamber 1 is fitted with a stopper 5 with the tube 2 going through it to the bottom of the chamber and of which the top part, which is fitted with a bend, is connected to the radiator, the by-pass tube 6 branching off of tube 2 and emerging through a well in stopper 5.
  • the bell-shaped relief valve 3 caps tube-end 6 and rests on a circular gasket at the bottom of the well in stopper, under the action of the spring 7 of which the top end presses against cover 8 which is fixed to stopper 5 and has openings 9 for steam outlet or air inlet in case of pressure drop.
  • the low-pressure valve 4 is fitted inside the relief valve 3, and in the form of construction represented as an example the valve steam forms one piece with disc 10, with a spring 11 one end of which presses on disc 10 and the other on valve bottom 3 so ensuring that valve 4 closes under normal working conditions.
  • valves 3 and 4 are the same as for those described for FIG. 2 but with the following particularities
  • the low-pressure valve is adjusted so that the opening point be sufficiently high to allow the liquid to be drawn firstly into the cooling system under the effect of the expansion of the gaseous volume contained in the expansion chamber, air being introduced into the circuit through the valve only when high pressure drops occur.
  • tube 2 and its by-pass 6 will be made in the form of a Y shaped tube in a single part from moulded rubber of which the two branches will be fitted to the corresponding metal tube outlets, which form one piece with the stopper 5.
  • An apparatus for use in a cooling system comprising an expansion chamber for receiving cooling liquid ejected from the cooling system having a plug at the top to seal the chamber and connected to the cooling system by a tube which extends down to thebottorn of said chamber;
  • a low-pressure valve located on said plug for said expansion chamber whereby air is allowed to enter said chamber from the outside when the pressure drops in the system.
  • said relief valve comprises a bell-shaped member secured to the top of said plug and positioned over said by-pass tube, said relief valve further comprising a cover means fitting in a sealing arrangement over the end of said by-pass tube and a spring between the under side of said bell-shaped member and said cover means to maintain said cover means in spring fitted engagement over the end of said bypass tube;
  • said low-pressure valve comprises an opening in the top of said cover means of the relief valve and a spring operated closure means for said opening whereby the valve is normally closed and only opens in response to low pressure under said cover means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Packages (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00157168A 1970-08-05 1971-06-28 Cooling system expansion chambers Expired - Lifetime US3741172A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7028846A FR2102469A5 (es) 1970-08-05 1970-08-05
FR7042698A FR2115641A6 (es) 1970-11-27 1970-11-27

Publications (1)

Publication Number Publication Date
US3741172A true US3741172A (en) 1973-06-26

Family

ID=26215885

Family Applications (1)

Application Number Title Priority Date Filing Date
US00157168A Expired - Lifetime US3741172A (en) 1970-08-05 1971-06-28 Cooling system expansion chambers

Country Status (10)

Country Link
US (1) US3741172A (es)
BE (1) BE769241A (es)
CH (1) CH536432A (es)
DE (1) DE2139117C3 (es)
ES (1) ES200802Y (es)
GB (1) GB1347279A (es)
OA (1) OA03766A (es)
RO (1) RO60900A (es)
SE (1) SE372793B (es)
SU (1) SU374861A3 (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809150A (en) * 1973-04-16 1974-05-07 Opti Cap Inc Minimizing corrosion of overflow receptacle equipped engine cooling system
US4537159A (en) * 1983-10-25 1985-08-27 Nissan Motor Co., Ltd. Coolant reserve tank
US4739824A (en) * 1987-01-08 1988-04-26 Susan E. Lund Hermetically sealed, relatively low pressure cooling system for internal combustion engines and method therefor
US4790369A (en) * 1982-04-29 1988-12-13 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US5135049A (en) * 1990-08-08 1992-08-04 Mercedes-Benz Ag Vent line in the cooling circuit of an internal combustion engine
US6708653B2 (en) * 2001-04-27 2004-03-23 Bombardier Recreational Products Inc. Fluid reservoir
US20060112910A1 (en) * 2004-11-26 2006-06-01 Gen Ohzono Vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA028004B1 (ru) * 2015-04-07 2017-09-29 Илья Борисович НАЛИЧАЕВ Осветительная установка
DE102019202872A1 (de) * 2019-03-04 2020-09-10 Audi Ag Kühlmittelausgleichsanordnung, Kraftfahrzeug mit einer solchen und Verfahren zur Druckregulierung in einem Kühlkreislauf

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809150A (en) * 1973-04-16 1974-05-07 Opti Cap Inc Minimizing corrosion of overflow receptacle equipped engine cooling system
US4790369A (en) * 1982-04-29 1988-12-13 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US4537159A (en) * 1983-10-25 1985-08-27 Nissan Motor Co., Ltd. Coolant reserve tank
US4739824A (en) * 1987-01-08 1988-04-26 Susan E. Lund Hermetically sealed, relatively low pressure cooling system for internal combustion engines and method therefor
US5135049A (en) * 1990-08-08 1992-08-04 Mercedes-Benz Ag Vent line in the cooling circuit of an internal combustion engine
US6708653B2 (en) * 2001-04-27 2004-03-23 Bombardier Recreational Products Inc. Fluid reservoir
US20060112910A1 (en) * 2004-11-26 2006-06-01 Gen Ohzono Vehicle
US7398746B2 (en) * 2004-11-26 2008-07-15 Yamaha Hatsudoki Kabushiki Kaisha Vehicle

Also Published As

Publication number Publication date
BE769241A (fr) 1971-11-03
SE372793B (es) 1975-01-13
GB1347279A (en) 1974-02-27
DE2139117B2 (de) 1974-03-07
ES200802U (es) 1975-11-01
OA03766A (fr) 1971-12-24
DE2139117C3 (de) 1974-10-03
ES200802Y (es) 1976-02-16
SU374861A3 (es) 1973-03-20
CH536432A (fr) 1973-04-30
DE2139117A1 (de) 1972-05-25
RO60900A (es) 1976-10-15

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