US3831560A - Coil-type continuous flow heater - Google Patents

Coil-type continuous flow heater Download PDF

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Publication number
US3831560A
US3831560A US00358999A US35899973A US3831560A US 3831560 A US3831560 A US 3831560A US 00358999 A US00358999 A US 00358999A US 35899973 A US35899973 A US 35899973A US 3831560 A US3831560 A US 3831560A
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US
United States
Prior art keywords
combustion chamber
flue gas
coil
burner
disposed
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
US00358999A
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English (en)
Inventor
H Kuhnlein
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.)
BERTRANS H AG
Original Assignee
BERTRANS H 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 BERTRANS H AG filed Critical BERTRANS H AG
Application granted granted Critical
Publication of US3831560A publication Critical patent/US3831560A/en
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Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/18—Apparatus
    • C10G9/20—Tube furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
    • F24H1/165—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using fluid fuel

Definitions

  • ABSTRACT A coil-type continuous flow heater which comprises a combustion chamber, burner means locatedat one end of the combustion chamber and flue gas outlet means disposed at the other end of said chamber, and pipe coil means substantially lining the combustion chamber, said pipe coil means being coaxially disposed within said chamber so that no gaps exist between the individual coils of said pipe, said pipe coil means also extending a distance from the wall of the combustion chamber so as to define a flue gas duct which is adapted to channel the flue gas from the flue gas outlet means to an outlet means at the burner side of the combustion chamber.
  • the present invention relates to a coil-type continuous flow heater containing a burner and used, for example, for heating organic and inorganic heat-transfer agents to a temperature range of about 200 to 600C.
  • the coil-type continuous flow heater of the present invention comprises a heat-transfer path defined by a single pipe coil wound axially and symmetrically, with the individual pipe windings being in mutual contact with each other so that no gaps exist between said windings.
  • the pipe windings substantially surround the combustion chamber constituting the radiation zone, except for the mouth of the burner and the flue gas outlet which are located at opposite ends of the combustion chamber and coaxially disposed with respect to said chamber and with respect to each other.
  • the heat transfer path is also encompassed by a flue gas casing which forms the convection zone, said flue gas casing being provided with an outlet at the burner side of the apparatus.
  • the heat-transfer path which can consist of single or multiple lap pipe coils is suitably constructed as a hollow cylinder with an outwardly extending conical ceiling and a bottom wall.
  • the heat-transfer agent flows through the pipe coils in the opposite direction to that of the flame in the combustion chamber and in parallel with the flue gases flowing through the flue gas casing disposed outside of the pipe coil.
  • all of the parallelconnected tubes forming said pipe coil have the same length and the same flow-through resistance, even if different large flow-through amounts through the heater are selected.
  • the flue gas casing is suitably surrounded by an air casing which channels an air-flow therethrough substantially parallel to the flow of the flue gases.
  • the film temperature of the heat-transfer agent on the coiled pipe wall which is heated on the inside by radiation and on the outside by convection can be controlled at any point of the heater because of the uniform flow through all pipe sections.
  • the heat absorption is uniform along the flow path in each pipesection. Therefore, an overheating of the system is substantially eliminated, even in the case of an overload or the effect produced by a non-uniform combustion flame.
  • the single FIGURE shows the coil-type continuous flow heater of the present invention.
  • element 1 denotes a pedestal on which is mounted an annular air chamber 2 which is provided with an inlet pipe 2a.
  • the outer wall of the cylindrical air chamber 2 extends in the upward direction and forms an air channel or casing; 3 which is provided on the outside with an insulating layer 4 which extends down to the pedestal.
  • a flue gas shell 5 is disposed at a radial spacing within the air casing 3 and is in communication at the top with an annular flue gas trap 6 disposed within the air casing 3.
  • the flue gas trap is provided with an outlet pipe 6a.
  • the air casing 3 is closed off at the top by an insulating lid 4a.
  • the air feeding elements of the burner 7 are in communication with zones 3a of the air casing 3 disposed above the flue gas trap 6.
  • a multiple-lap pipe coil 8 with mutually contacting pipe windings is radially spaced in the flue gas shell 5. This pipe coil constitutes the heattransportation path in the heater.
  • This single pipe coil 8 which has a cylindrical main body 8a, contains a top section 8b which is conical in shape as it extends in the upward direction and has a cylindrical collar surrounding the inner wall of the flue gas trap 6 encompassing the burner nozzles 7a.
  • the pipe coil 8 also has a bottom section which is conical in shape as it extends in the downward direction and has a central opening 9 axially opposed to the nozzle 7a. This central opening communicates via the distributor channel 10 disposed between the bottom section 80 and the air chamber 2, with the flue gas duct 11 which is disposed between the cylindrical section 8a and the flue gas shell .5. Thus the flue gas duct 11 is in communication with the trap 6 and the flue gas outlet pipe 60.
  • the interior of the pipe coil 8 disposed between the nozzle 7a and the bottom opening 9 fonns the combustion chamber 12 of the heater.
  • the pipe coil 8 which defines a closed combustion chamber 12 which does not contain any gaps, except for the burner mouth and the bottom opening 9, is formed by three parallel-connected tubes 13a, 13b and 13c of equivalent length and substantially identical flow resistance, wound in parallel about the central axis a of the heater.
  • the pipe coil 8 could also comprise only one winding, that is, consist of only a single pipe length, or alternatively, it could have more than three pipe lengths. ln the zone of the flue gas distributor chamber 10, the three pipe lengths 13a, 13b, and 130 terminate in a collector pipe 14 leading through the air chamber 2 in the downward direction to a heattransfer agent inlet pipe 140.
  • This collector pipe extends laterally through the casings and 3 and the insulating layer 4 to a heattransfer medium outlet pipe a.
  • the heat transfer medium flows from the bottom toward the top in three equal streams through the pipe lengths 13a, 13b and 13c, and absorbs heat from the combustion chamber (radiation zone) 12.
  • the hot flue gases pass through the bottom opening 9 into the distributor chamber 10, flow in the upward direction through annular chamber 11 and are conveyed by the trap 6 to the outlet pipe 6a.
  • This conductance of the flue gas not only permits an additional heat transfer to the heat transfer medium, but also prevents undesirable high temperature differences between the inner and the outer sides of the pipe coil 8.
  • the above-described heater could also be disposed horizontally instead of vertically, that is, unless the heattransfer medium must be emptied by the force of gravity.
  • the all-around, no-gap encompassing of the combustion chamber 12 by the pipe coil 8 also insures a uniform exposure of the pipe coil in the radiation zone.
  • a coil-type continuous flow heater which comprises a combustion chamber, burner means located at one end of the combustion chamber and flue gas outlet means disposed at the other end of said chamber, and pipe coil means substantially lining the combustion chamber, said pipe coil means being coaxially disposed within said chamber so that no gaps exist between the individual coils of said pipe, said pipe coil means also extending a distance from the wall of the combustion chamber so as to define a flue gas duct which is adapted to channel the flue gas from the flue gas outlet means to an outlet means at the burner side of the combustion chamber, said pipe coil means further comprising multiple windings having substantially equal lengths and flow resistances, said multiple windings being connected in parallel and emanating from an inlet collector tube disposed at the flue gas outlet end portion of the combustion chamber and terminating in an outlet collector tube which is disposed at the burner end of the combustion chamber and a flue gas trap disposed at the burner end portion of the combustion chamber and a flue gas distributor chamber disposed at the other end portion of the combustion chamber, said flue gas duct communicating
  • the coil type continuous flow heater of claim 1 wherein the pipe coil means has a cylindrical main body and conical end portions, one of said end portions being adapted to receive the nozzle of the burner means and the other of said end portions containing the flue gas outlet means.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
US00358999A 1972-09-21 1973-05-10 Coil-type continuous flow heater Expired - Lifetime US3831560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1390472A CH549762A (de) 1972-09-21 1972-09-21 Rohrschlangen - durchlauferhitzer.

Publications (1)

Publication Number Publication Date
US3831560A true US3831560A (en) 1974-08-27

Family

ID=4396342

Family Applications (1)

Application Number Title Priority Date Filing Date
US00358999A Expired - Lifetime US3831560A (en) 1972-09-21 1973-05-10 Coil-type continuous flow heater

Country Status (9)

Country Link
US (1) US3831560A (enrdf_load_stackoverflow)
JP (1) JPS4970002A (enrdf_load_stackoverflow)
BR (1) BR7307202D0 (enrdf_load_stackoverflow)
CH (1) CH549762A (enrdf_load_stackoverflow)
DE (1) DE2344188A1 (enrdf_load_stackoverflow)
ES (1) ES418961A1 (enrdf_load_stackoverflow)
FR (1) FR2200486A1 (enrdf_load_stackoverflow)
IT (1) IT998601B (enrdf_load_stackoverflow)
NL (1) NL7311631A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006190A1 (en) * 1993-08-23 1995-03-02 Solinnov Napenergiával Mu^'ködo^' Berendezéseket Hasznosító, Épületkarbantartó Export-Import Kft. Steam generator and steam turbine driving unit for the use of gaseous propellant, especially hydrogen
US20090173599A1 (en) * 2008-01-03 2009-07-09 Iet Combustion Llc System and Method for Product Removal
US20090175988A1 (en) * 2008-01-03 2009-07-09 Iet Combustion Llc Oven
CN102408907A (zh) * 2011-09-29 2012-04-11 牛晓璐 一种利用裂解余热的加热方法及其设备
US10398148B2 (en) 2008-01-03 2019-09-03 Souhel Khanania Oven
US11346549B2 (en) 2015-12-28 2022-05-31 Souhel Khanania Burner assembly and systems incorporating a burner assembly
US11346548B2 (en) 2015-12-28 2022-05-31 Souhel Khanania Burner assembly and heat exchanger
US11690471B2 (en) 2015-12-28 2023-07-04 Souhel Khanania Cooking system with burner assembly and heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8328227U1 (de) * 1983-10-01 1983-12-29 Klöckner Gefi KG, Industrielle Wärmetechnik, 4150 Krefeld Durchlauferhitzer zur erwaermung von fluessigkeiten
JPS63201952U (enrdf_load_stackoverflow) * 1987-06-16 1988-12-27

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2237890A (en) * 1940-03-04 1941-04-08 Rolland C Sabins Water heater construction
US3065741A (en) * 1959-10-14 1962-11-27 Gerard George Furnace construction
US3351041A (en) * 1965-05-21 1967-11-07 Mitchell Engineering Ltd Water tube boiler
US3529579A (en) * 1969-04-24 1970-09-22 Leon Jacques Wanson Multitubular boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2237890A (en) * 1940-03-04 1941-04-08 Rolland C Sabins Water heater construction
US3065741A (en) * 1959-10-14 1962-11-27 Gerard George Furnace construction
US3351041A (en) * 1965-05-21 1967-11-07 Mitchell Engineering Ltd Water tube boiler
US3529579A (en) * 1969-04-24 1970-09-22 Leon Jacques Wanson Multitubular boiler

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006190A1 (en) * 1993-08-23 1995-03-02 Solinnov Napenergiával Mu^'ködo^' Berendezéseket Hasznosító, Épületkarbantartó Export-Import Kft. Steam generator and steam turbine driving unit for the use of gaseous propellant, especially hydrogen
CN1082607C (zh) * 1993-08-23 2002-04-10 索利诺夫.N.M.B.H.E.进出口公司 蒸气发生器和使用气体推进剂的蒸气涡轮推进单元
US8201493B2 (en) 2008-01-03 2012-06-19 Souhel Khanania Oven
US20090175988A1 (en) * 2008-01-03 2009-07-09 Iet Combustion Llc Oven
US8167114B2 (en) 2008-01-03 2012-05-01 Souhel Khanania System and method for product removal
US20090173599A1 (en) * 2008-01-03 2009-07-09 Iet Combustion Llc System and Method for Product Removal
US8869971B2 (en) 2008-01-03 2014-10-28 Souhel Khanania System and method for product removal
US10398148B2 (en) 2008-01-03 2019-09-03 Souhel Khanania Oven
US10794598B2 (en) 2008-01-03 2020-10-06 Souhel Khanania Oven
CN102408907A (zh) * 2011-09-29 2012-04-11 牛晓璐 一种利用裂解余热的加热方法及其设备
US11346549B2 (en) 2015-12-28 2022-05-31 Souhel Khanania Burner assembly and systems incorporating a burner assembly
US11346548B2 (en) 2015-12-28 2022-05-31 Souhel Khanania Burner assembly and heat exchanger
US11690471B2 (en) 2015-12-28 2023-07-04 Souhel Khanania Cooking system with burner assembly and heat exchanger
US12222102B2 (en) 2015-12-28 2025-02-11 Souhel Khanania Burner assembly and systems incorporating a burner assembly

Also Published As

Publication number Publication date
ES418961A1 (es) 1976-03-01
IT998601B (it) 1976-02-20
FR2200486A1 (enrdf_load_stackoverflow) 1974-04-19
DE2344188A1 (de) 1974-04-11
BR7307202D0 (pt) 1974-08-29
NL7311631A (enrdf_load_stackoverflow) 1974-03-25
CH549762A (de) 1974-05-31
JPS4970002A (enrdf_load_stackoverflow) 1974-07-06

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