US2716001A - Cooling system for vehicle engines - Google Patents

Cooling system for vehicle engines Download PDF

Info

Publication number
US2716001A
US2716001A US218133A US21813351A US2716001A US 2716001 A US2716001 A US 2716001A US 218133 A US218133 A US 218133A US 21813351 A US21813351 A US 21813351A US 2716001 A US2716001 A US 2716001A
Authority
US
United States
Prior art keywords
cooling
pump
steam
cooling liquid
conduit
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
US218133A
Inventor
Friedrich K H Nallinger
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Application granted granted Critical
Publication of US2716001A publication Critical patent/US2716001A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P3/2271—Closed cycles with separator and liquid return

Definitions

  • the present invention refers to a cooling system for vehicle engines, and more particularly to motor vehicle engines, utilizing steam cooling, in which the cooling liquid, which is in the cooling jacket of the combustion engine, and which is particularly under pressure, is heated normally close to boiling temperature, and in which the steam, which is formed upon relieving, is emitted or separated from the cooling liquid and is conveyed back to the liquid cycle preferably upon condensation.
  • a cooling system particularly economical.
  • the steam which is emitted from the cooling liquid, is conveyed to a heating device.
  • a further object of the present invention is concerned with suitably regulating the heating device.
  • a further object of the present invention is to provide n a construction of the cooling system, which is as simple as possible, particularly by utilizing a cooling liquid pump, which serves simultaneously for the emission of steam.
  • a further object of the present invention is furthermore concerned with such an arrangement of the steam drum and of the condenser that the steam can condense as quickly and completely as possible.
  • the conduit b leads from the engine a to the circulating pump 0, which is constructed as a centrifugal pump, and a conduit d leads back from the pump to the engine.
  • the cooling liquid for example cooling water
  • the cooling jacket of the engine which cooling jacket is closed on all sides, where it is heated close to the boiling temperature, which corresponds to the existing overpressure.
  • the cooling liquid which enters the pump 0 through the conduit 12, is centrifuged to the outside by the pump 0, while the steam remains in the center of the pump and is emitted at e in the middle of the axis of same and guided into the conduit 1.
  • the conduit 1 leads to a heat exchanger g, for example, to a heater for heating the vehicle, in which the heat of the steam is radiated to the heating medium of the vehicle, for example fresh air.
  • the conduit h leads, for example through the upper part of a sump i, to the condenser k.
  • a conduit l guides the condensation water from the condenser it back to the sump i, which, if so desired, can also be united with the condenser as one unit.
  • the cooling liquid is pumped from the container 1' into the conduit b, or conveyed back to the pump c, suitably under a small overpressure and discharged axially into the pump c, for example, by means of a nozzle 0, which discharges axially into the pump.
  • a short-circuit line p which permits, for example, during summertime to switch off the heat exchanger g or the heater by means of change-over cock q.
  • a radiator free liquid cooling system for a vehicle internal combustion engine having a closed in cooling liquid jacket, and a cooling circulation device
  • the improvement comprising a cooling liquid pump, a line leading to the pump and connecting the cooling liquid jacket directly with the pump, another line leading to the cooling liquid jacket connecting the pump directly with the cooling liquid jacket, said cooling liquid being circulated by said pump under high pressure from the cooling liquid jacket through said lines and said pump back to the cooling liquid jacket, means for separating steam in the pump, a heater for the vehicle connected in parallel to the aforesaid cooling circulation device, means to condense the steam, means for conducting the steam from the pump to the heater, and means for returning the steam used for this purpose as condensate to the cooling circulation device.
  • a radiator free cooling system for a vehicle combustion engine comprising a cooling device for the engine, closed in means connected to the engine for conveying a cooling liquid normally heated by the heat of the engine close to the boiling point thereof, means for separating the resulting steam from the cooling liquid, a heating device for the vehicle, means for conveying to said heating device the heat from the separated steam, a sump, and a condenser, a conduit from the heating device to the upper part of the sump, a conduit from the upper part of the sump to the upper part of the condenser, one conduit from the lower part of the condenser to the lower part of the sump, and a conduit from the lower part of the sump to the cooling device of the engine.
  • said means for condensing the steam and for returning the condensate to the cooling circulating device comprise a sump, a condenser, a conduit from the heating device to the upper part of the sump, a conduit from the upper part of the sump to the upper part of the condenser, a conduit from the lower part of the condenser to the lower part of the sump, a conduit from the lower part of the condenser to the cooling liquid pump and a return pump in this conduit for guiding the condensation product back to the cooling liquid pump.
  • a radiator-free circulating cooling system with a sump and with a cooling liquid for a vehicle internal combustion engine
  • the improvement comprising means including a closed cooling jacket for placing said cooling liquid under increased pressure and for normally heating said cooling liquid by the heat of said engine close to the boiling point thereof, means in said first-mentioned means for separating the resulting steam from said cooling liquid and for directly returning the steamless cooling liquid to said cooling jacket in lay-passing relationship with said sump, a condenser, and means for returning the condensate of the steam to said cooling jacket only 'said cooling liquid being circulated by said purnp under pressure from the cooling liquid jacket through said lines and said pump back to said cooling liquid jacket, means connected with said pump for separating steam from said heated cooling liquid, a heater for the vehicle connected in parallel to said cooling circulation device, said heater having means to condense the steam, means for conducting the steam from the pump to the heater, and 7 means for returning the steam used for this purpose as condensate to the cooling circulation device.

Description

1955 F. K. H. NALLINGER 2,716,001
COOLING SYSTEM FOR VEHICLE ENGINES Filed March 29, 1951 INVENTOR FRIEDRICH K H- IVALLZWGER ATTIHUVEYS United States Patent 0 COOLING SYSTEM non VEHICLE ENGINES Friedrich K. H. Nallinger, Stuttgart, Germany, assignor to Daimler-Benz Aktiengesellschaft, Stuttgart-Unterturkheim, Germany Appiicafion March 29, 1951, Serial No. 218,133 In Germany February 4, 1950 Public Law 619, August 23, 1954 Patent expires February 4, 1970 7 Claims. (Cl. 237-123) The present invention refers to a cooling system for vehicle engines, and more particularly to motor vehicle engines, utilizing steam cooling, in which the cooling liquid, which is in the cooling jacket of the combustion engine, and which is particularly under pressure, is heated normally close to boiling temperature, and in which the steam, which is formed upon relieving, is emitted or separated from the cooling liquid and is conveyed back to the liquid cycle preferably upon condensation.
It is an object of the present invention to render such a cooling system particularly economical. For this purpose, particularly the steam, which is emitted from the cooling liquid, is conveyed to a heating device.
A further object of the present invention is concerned with suitably regulating the heating device.
A further object of the present invention is to provide n a construction of the cooling system, which is as simple as possible, particularly by utilizing a cooling liquid pump, which serves simultaneously for the emission of steam.
It is another object of the present invention to increase the economy of the cooling system by placing the liquid in the cooling system of the engine under pressure.
A further object of the present invention is furthermore concerned with such an arrangement of the steam drum and of the condenser that the steam can condense as quickly and completely as possible.
In the single view drawing there is shown a sketch of a cooling system in accordance with the present invention.
The conduit b leads from the engine a to the circulating pump 0, which is constructed as a centrifugal pump, and a conduit d leads back from the pump to the engine. The cooling liquid, for example cooling water, is under relatively high pressure forced into the cooling jacket of the engine, which cooling jacket is closed on all sides, where it is heated close to the boiling temperature, which corresponds to the existing overpressure.
The cooling liquid, which enters the pump 0 through the conduit 12, is centrifuged to the outside by the pump 0, while the steam remains in the center of the pump and is emitted at e in the middle of the axis of same and guided into the conduit 1. The conduit 1 leads to a heat exchanger g, for example, to a heater for heating the vehicle, in which the heat of the steam is radiated to the heating medium of the vehicle, for example fresh air. From the heat exchanger g the conduit h leads, for example through the upper part of a sump i, to the condenser k. A conduit l guides the condensation water from the condenser it back to the sump i, which, if so desired, can also be united with the condenser as one unit. Through a further conduit m with a conveyer pump n the cooling liquid is pumped from the container 1' into the conduit b, or conveyed back to the pump c, suitably under a small overpressure and discharged axially into the pump c, for example, by means of a nozzle 0, which discharges axially into the pump. Furthermore, provision can be made for a short-circuit line p, which permits, for example, during summertime to switch off the heat exchanger g or the heater by means of change-over cock q.
What I claim is:
1. In a radiator free liquid cooling system for a vehicle internal combustion engine having a closed in cooling liquid jacket, and a cooling circulation device, the improvement comprising a cooling liquid pump, a line leading to the pump and connecting the cooling liquid jacket directly with the pump, another line leading to the cooling liquid jacket connecting the pump directly with the cooling liquid jacket, said cooling liquid being circulated by said pump under high pressure from the cooling liquid jacket through said lines and said pump back to the cooling liquid jacket, means for separating steam in the pump, a heater for the vehicle connected in parallel to the aforesaid cooling circulation device, means to condense the steam, means for conducting the steam from the pump to the heater, and means for returning the steam used for this purpose as condensate to the cooling circulation device.
2. Cooling system in accordance with claim 1, wherein the last mentioned means comprise a return pump for conveying the condensation product back to the cooling circulation device.
3. In a radiator free cooling system for a vehicle combustion engine, the improvement comprising a cooling device for the engine, closed in means connected to the engine for conveying a cooling liquid normally heated by the heat of the engine close to the boiling point thereof, means for separating the resulting steam from the cooling liquid, a heating device for the vehicle, means for conveying to said heating device the heat from the separated steam, a sump, and a condenser, a conduit from the heating device to the upper part of the sump, a conduit from the upper part of the sump to the upper part of the condenser, one conduit from the lower part of the condenser to the lower part of the sump, and a conduit from the lower part of the sump to the cooling device of the engine.
4. Cooling system in accordance With claim 1, wherein said means for condensing the steam and for returning the condensate to the cooling circulating device comprise a sump, a condenser, a conduit from the heating device to the upper part of the sump, a conduit from the upper part of the sump to the upper part of the condenser, a conduit from the lower part of the condenser to the lower part of the sump, a conduit from the lower part of the condenser to the cooling liquid pump and a return pump in this conduit for guiding the condensation product back to the cooling liquid pump.
5. Cooling system in accordance with claim 1, furthermore comprising a sump, in which the steam is collected as a condensation product after its passage through the heating device, means adapted to guide the condensation product again back to the cooling device, a short-circuit line between said means for separating the steam and said sump, said line bypassing the heating device, and means for regulating the steam entry to the heating device or to the short-circuit line.
6. In a radiator-free circulating cooling system with a sump and with a cooling liquid for a vehicle internal combustion engine the improvement comprising means including a closed cooling jacket for placing said cooling liquid under increased pressure and for normally heating said cooling liquid by the heat of said engine close to the boiling point thereof, means in said first-mentioned means for separating the resulting steam from said cooling liquid and for directly returning the steamless cooling liquid to said cooling jacket in lay-passing relationship with said sump, a condenser, and means for returning the condensate of the steam to said cooling jacket only 'said cooling liquid being circulated by said purnp under pressure from the cooling liquid jacket through said lines and said pump back to said cooling liquid jacket, means connected with said pump for separating steam from said heated cooling liquid, a heater for the vehicle connected in parallel to said cooling circulation device, said heater having means to condense the steam, means for conducting the steam from the pump to the heater, and 7 means for returning the steam used for this purpose as condensate to the cooling circulation device.
References'Cited in the file of this patent UNITED STATES PATENTS 7 877,903 Butler Feb. 4, 1908 1,489,501 Miner Apr; 8; 1924 1,893,329 Hynes Jan 3, 1933 V FOREIGN PATENTS 521,577 Germany Mar. 24, 1931 761,316 France Jan. 3, 1934
US218133A 1950-02-04 1951-03-29 Cooling system for vehicle engines Expired - Lifetime US2716001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2716001X 1950-02-04

Publications (1)

Publication Number Publication Date
US2716001A true US2716001A (en) 1955-08-23

Family

ID=7997141

Family Applications (1)

Application Number Title Priority Date Filing Date
US218133A Expired - Lifetime US2716001A (en) 1950-02-04 1951-03-29 Cooling system for vehicle engines

Country Status (1)

Country Link
US (1) US2716001A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100001086A1 (en) * 2008-07-07 2010-01-07 Bhatti Mohinder S Comfort heating system for motor vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877903A (en) * 1905-12-04 1908-02-04 Charley R Butler Art of heat transference.
US1489501A (en) * 1922-01-16 1924-04-08 Madison Heating Company House-heating system
DE521577C (en) * 1927-10-13 1931-03-24 Paul H Mueller Dr Ing Device for recycling waste heat from internal combustion engines
US1893329A (en) * 1926-11-19 1933-01-03 Cons Car Heating Co Inc Motor-car heating and ventilating system
FR761316A (en) * 1933-09-27 1934-03-16 Cie De Chauffage Central Par L Device for using waste heat from internal combustion engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US877903A (en) * 1905-12-04 1908-02-04 Charley R Butler Art of heat transference.
US1489501A (en) * 1922-01-16 1924-04-08 Madison Heating Company House-heating system
US1893329A (en) * 1926-11-19 1933-01-03 Cons Car Heating Co Inc Motor-car heating and ventilating system
DE521577C (en) * 1927-10-13 1931-03-24 Paul H Mueller Dr Ing Device for recycling waste heat from internal combustion engines
FR761316A (en) * 1933-09-27 1934-03-16 Cie De Chauffage Central Par L Device for using waste heat from internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100001086A1 (en) * 2008-07-07 2010-01-07 Bhatti Mohinder S Comfort heating system for motor vehicle

Similar Documents

Publication Publication Date Title
US2749049A (en) Automotive heater booster
ES315314A1 (en) Improvements in diesel engines intended to feed heavy oil. (Machine-translation by Google Translate, not legally binding)
US2413770A (en) Vapor-liquid cooling cycle for engines
US1256709A (en) Method of and means for cooling internal-combustion engines.
US2988068A (en) Engine cooling system
US2369937A (en) Carburetor intake air heater
US2748570A (en) Combustion engine driven hydrodynamic brake fluid heater
US2716001A (en) Cooling system for vehicle engines
US2118739A (en) Cooling system
US2403218A (en) Cooling system for internalcombustion engines
US3085558A (en) Preheater for carburetor inlet air
US2443518A (en) Cooling system for internal-combustion engines
US2926641A (en) Uniform temperature, dual circuit engine cooling system
US1822147A (en) Intake mixture heating system
US2399942A (en) Thermosiphon liquid circulating heating system
US2362015A (en) Engine cooling system
US1665885A (en) Internal-combustion engine
US1712464A (en) Internal-combustion engine
US3524499A (en) Multistage condenser for internal combustion engines
US2100281A (en) Motor vehicle temperature modifier
US1632596A (en) Vapor-cooling system
US2059916A (en) Water and temperature regulator for motors
US2004993A (en) Automobile heater
GB1092159A (en) Improvements relating to arrangements for facilitating the starting of diesel engines
US2028069A (en) Motor vehicle heating and cooling system