US3601099A - Gas-heated once-through positive flow water heaters - Google Patents

Gas-heated once-through positive flow water heaters Download PDF

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Publication number
US3601099A
US3601099A US825554A US3601099DA US3601099A US 3601099 A US3601099 A US 3601099A US 825554 A US825554 A US 825554A US 3601099D A US3601099D A US 3601099DA US 3601099 A US3601099 A US 3601099A
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US
United States
Prior art keywords
blower
casing
exhaust gas
hood
set forth
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
US825554A
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English (en)
Inventor
Karl-Ernst Vaillant
Helmut Schmidt
Robert Lehnartz
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.)
Vaillant GmbH
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Joh Vaillant GmbH and Co
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 Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
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Publication of US3601099A publication Critical patent/US3601099A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters

Definitions

  • the invention relates to gas-heated once-through positive flow water heaters having a fin block which terminates a heating shaft and an exhaust-gas-collecting hood adjoining the fin block and an exhaust gas blower.
  • the exhaust-gascollecting hood of the apparatus is adjoined by a flow safety device which has a so-called top hood and is connected to the exhaust gas flue.
  • the flow safety device is disposed within the casing of the apparatus. In other types of apparatus the flow safety device is disposed above the apparatus casing.
  • the prior art also discloses so-called balanced flue apparatus which have a casing sealed relative to the room in which the apparatus is installed and in which the supply of fresh air and the discharge of exhaust gas is through two separate ducts provided in the suspension wall in the form of a brickwork box.
  • the normal apparatus which are connected to a flue by means of a flow safety device, special types of apparatus whose construction differed substantially from each other were hitherto necessary for use with blower apparatus and for apparatus with an outside wall suspension (balanced flue).
  • the object of the invention is to provide a unified type of apparatus of a gas-heated once-through positive flow water heater which may be connected to a flue with a flow safety device but may also be operated with an exhaust gas blower and can be employed as an outside wall apparatus (balanced flue apparatus).
  • This kind of standardization of apparatus types does not merely offer the advantage of simplified batch manufacture and storage but also offers the means to adapt the apparatus to prevailing spacial conditions and to the different conditions of aerodynamic lift resulting from the use of different types of gas.
  • the exhaust gas blower is constructed as a removable structural unit which may be exchanged with a flow safety device. While hitherto it was found that after installation of an apparatus there was insufficient aerodynamic lift, for example when using natural gas, or that an existing flue did not provide sufficient draft, the subsequent installation of an exhaust gas blower presents considerably difficulties. Unless it was preferred to employ a different type of apparatus specially designed for blower operation it was necessary, in order to install an exhaust gas blower, to perform complicated modifications which were not always successful. These difficulties are avoided according to the invention in that initially a blower extension is provided which is suitable for the apparatus and can easily installed and may be used immediately if necessary as an exchange component.
  • the exhaust gas blower together with the exhaust gas hood is constructed to form an integral exchangeable structural unit. This procedure is particularly recommended if in the interests of correct flow the exhaust gas hood with a built-in flow safety device must have another shape and dimensions than those required for blower operation. Under these conditions the means for fastening the exhaust gas hood to the rear wall ofthe apparatus cannot be identical.
  • the exhaust gas blower constructed integrally with a motor, rotates about a vertical axis and has a vertical suction branch and a horizontal delivery branch.
  • the blower thus deflects the exhaust gases in the manner normally required.
  • the suction branch may have a mounting flange which can be bolted in different angular positions to a mating flange which is fixed relative to the apparatus.
  • the exhaust gas blower may then be fitted so that the exhaust gas is discharged either to the rear or at an angle to the sides. In this way a greater degree of flexibility is obtained in installing the exhaust gas duct.
  • the exhaust gas blower is advantageously disposed within a casing mounted on an apparatus rear wall.
  • the apparatus rear wall may be provided with one or more openings to accommodate exhaust gas lines connected to the discharge branch of the exhaust gas blower. Said openings may be blanked out when the apparatus rear wall is constructed or they may be only scribed so that they can be easily broken out as required on the installation site.
  • the exhaust gas blower may be adapted for placing on the upper end face of the apparatus casing in which the discharge opening of the exhaust gas hood merges and may be covered by a hood-shaped blower casing.
  • a flange connection which permits rotation of the exhaust gas blower is also provided in this case.
  • an exhaust gas blower having tangentially extending discharge branches.
  • an inclined connecting pipe is appropriately provided between the suction branch of the exhaust gas blower and the mounting flange, said connecting pipe being so dimensioned that the central axis of a tangentially extending discharge branch of the exhaust gas blower is disposed perpendicularly over the central axis of the mounting flange.
  • the discharge branch will then always remain radial relative to the connecting flange if the exhaust gas blower is mounted in a rotated position.
  • draft control means are provided between the discharge branch of the exhaust gas blower and the exhaust gas pipe to be connected thereto.
  • FIGS. 1 and 2 show diagrammaticfront elevations and side elevations of a once-through positive flow water heater with a built-in flow safety device.
  • FIGS. 3 and 4 show in diagrammatic form the same apparatus after installation of an exhaust gas blower.
  • FIG. 5 is a diagrammatic plan view of FIG. 4.
  • FIGS. 6 and 7 show diagrammatic side elevations and plan views of another embodiment.
  • FIGS. 8 and 9 are diagrammatic plan views and front elevations of the arrangement of an exhaust gas blower having a tangential discharge socket.
  • FIG. 10 is a diagrammatic side elevation of a blower system with draft control means.
  • a water control valve 3, a gas control valve 4, a gas burner 5, and a heater shaft 6, enclosed by a fin block 6 are provided on the rear wall 1 of a casing 2.
  • the once-through positive flow water heater corresponds to the known, normal construction in which the back draft flow safety device comprising parts 7, 8 and 9, is disposed within the casing. As can be seen from FIGS.
  • the flow safety device comprising parts 7, 8 and 9 can be removed and can be replaced by an exhaust gas blower which is combined to form an integral structural unit with an exhaust gas hood 7' of different dimensions.
  • the support 12 serves to mount the exhaust gas hood 7 on the casing rear wall 1.
  • the exhaust gas blower 10 is constructed integrally with its motor 10' and has a vertical axis of rotation.
  • the vertical suction branch 11 is provided with a flange ll'which is bolted to a mating flange 12 on the exhaust gas hood 7.
  • the horizontal discharge branch 10" of the exhaust gas blower 10 is connected to an exhaust gas pipe 14 which extends through the wall on which the apparatus is mounted, to atmosphere.
  • An opening 15 for admitting the exhaust gas pipe 14 is provided in the casing rear wall 1. As indicated in FIG. 5,
  • the flanges l 1' and 12' can be coupled or bolted to each other in different angular positions so that the discharge branch can point in different directions and may therefore also be connected to laterally extending exhaust gas ducts 14 or 14'.
  • the casing 2' terminates at the level of an exhaust gas hood 7" whose discharge openings merges into the upper end face of the casing 2.
  • the flange 11 of the exhaust gas blower 10 is bolted to a mating flange 12 on the exhaust gas hood 7".
  • the exhaust gas blower 10 can also be fitted in different angular positions so that the exhaust gas branch 10" can point in different directions.
  • the exhaust gas blower 10 and its motor 10' are covered by a hoodshaped casing 16.
  • an exhaust gas blower 17 having a tangentially extending discharge branch 17
  • An inclined pipe connecting member 19 is disposed between the suction branch 18 and the flange 1 1 so that the exhaust gas blower 17 is disposed eccentrically relative to the mounting flange 1 1'.
  • the pipe connecting piece 19 is so designed that the center line of the discharge branch 17 is disposed perpendicularly above the center of the flange 11'. If the exhaust gas blower 17 is bolted on in the manner described hereinabove in different angular positions, the discharge branch 17" remains radial to the flange 11' in any angular position.
  • the mating flange 12' is disposed on the exhaust gas hood 7 as in the embodiment illustrated in FIGS. 3 and 4.
  • a flared exhaust gas pipe 14 is provided, having an expanded section 20 into which the discharge branch 10"retained by webs 21, of the exhaust gas blower 10 is adapted to extend.
  • This system interrupts the exhaust gas duct 14 in the manner of a known draft control system. If the exhaust gas discharge is substantially obstructed it is therefore possible for part of the exhaust gases to enter into the room in which the apparatus is installed without however being able to enter the combustion chamber.
  • exhaust gas blower means incorporating the other of said hoods
  • the heater may readily be adapted for use in different types of installation
  • said blower means includes an exhaust gas blower having an integral motor, said blower and motor having a shaft rotating about a vertical axis, said blower having a vertical suction branch communicating with the respective hood and a horizontal discharge branch.
  • respective hood has a mounting flange at the top thereof; and said blower has a mounting flange at the bottom thereof about said suction branch with the blower flange being positioned on the hood flange; said flanges having means to connect the flanges at different angular positions with respect to each other.
  • said respective hood defines a vertical axis, said suction branch being inclined towards one side of said axis, said discharge branch being substantially horizontal and having an axis intersecting said hood axis.
  • said respective hood defines a vertical axis, said suction branch being inclined towards one side of said axis, said discharge branch being substantially horizontal and having an axis intersecting said hood axis.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Incineration Of Waste (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US825554A 1968-08-02 1969-05-19 Gas-heated once-through positive flow water heaters Expired - Lifetime US3601099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1779360A DE1779360C3 (de) 1968-08-02 1968-08-02 Gasbeheizter Durchlauferhitzer

Publications (1)

Publication Number Publication Date
US3601099A true US3601099A (en) 1971-08-24

Family

ID=5703853

Family Applications (1)

Application Number Title Priority Date Filing Date
US825554A Expired - Lifetime US3601099A (en) 1968-08-02 1969-05-19 Gas-heated once-through positive flow water heaters

Country Status (6)

Country Link
US (1) US3601099A (xx)
AT (1) AT292972B (xx)
BE (1) BE736994A (xx)
DE (1) DE1779360C3 (xx)
ES (1) ES366155A1 (xx)
GB (1) GB1268402A (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797477A (en) * 1972-01-10 1974-03-19 Teledyne Inc Convertible gas heating apparatus
US4672919A (en) * 1985-06-07 1987-06-16 Bradford-White Corporation Direct power vented water heater
US4940042A (en) * 1988-08-24 1990-07-10 Mor-Flo Industries, Inc. System and apparatus for venting water heater
US5199385A (en) * 1992-03-24 1993-04-06 Bradford-White Corp. Through the wall vented water heater
USRE34534E (en) * 1985-06-07 1994-02-08 Bradford-White Corporation Direct power vented water heater
US9052121B2 (en) 2011-11-30 2015-06-09 Intelligent Energy, Llc Mobile water heating apparatus
US10195470B2 (en) 2013-03-15 2019-02-05 Oy Halton Group Ltd. Water spray fume cleansing with demand-based operation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631718A1 (de) * 1975-07-28 1977-02-10 Leblanc Sa E L M Gasbeheizter warmwasserbereiter mit gasdichtem abzug
DE3708113A1 (de) * 1987-03-13 1988-09-22 Zinser Textilmaschinen Gmbh Fadenbruchabsaugvorrichtung an einer spinnmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB890694A (en) * 1959-07-17 1962-03-07 Junkers & Co Improvements in or relating to gas-heated water heaters
US3211080A (en) * 1963-12-20 1965-10-12 Elmer P Rader Draft control unit
US3347147A (en) * 1967-03-02 1967-10-17 Ben O Howard Exhauster including venturi means
US3361127A (en) * 1965-05-03 1968-01-02 Vaillant Joh Kg Back draft safety device for jacketed gas-heated liquid heaters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB890694A (en) * 1959-07-17 1962-03-07 Junkers & Co Improvements in or relating to gas-heated water heaters
US3211080A (en) * 1963-12-20 1965-10-12 Elmer P Rader Draft control unit
US3361127A (en) * 1965-05-03 1968-01-02 Vaillant Joh Kg Back draft safety device for jacketed gas-heated liquid heaters
US3347147A (en) * 1967-03-02 1967-10-17 Ben O Howard Exhauster including venturi means

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797477A (en) * 1972-01-10 1974-03-19 Teledyne Inc Convertible gas heating apparatus
US4672919A (en) * 1985-06-07 1987-06-16 Bradford-White Corporation Direct power vented water heater
USRE34534E (en) * 1985-06-07 1994-02-08 Bradford-White Corporation Direct power vented water heater
US4940042A (en) * 1988-08-24 1990-07-10 Mor-Flo Industries, Inc. System and apparatus for venting water heater
US5199385A (en) * 1992-03-24 1993-04-06 Bradford-White Corp. Through the wall vented water heater
US9052121B2 (en) 2011-11-30 2015-06-09 Intelligent Energy, Llc Mobile water heating apparatus
US10451310B2 (en) 2011-11-30 2019-10-22 Intelligent Energy, Llc Mobile water heating apparatus
US10195470B2 (en) 2013-03-15 2019-02-05 Oy Halton Group Ltd. Water spray fume cleansing with demand-based operation

Also Published As

Publication number Publication date
DE1779360B2 (de) 1973-05-30
GB1268402A (en) 1972-03-29
DE1779360C3 (de) 1973-12-20
ES366155A1 (es) 1971-03-16
AT292972B (de) 1971-09-27
DE1779360A1 (de) 1971-10-21
BE736994A (xx) 1970-01-16

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