|Publication number||US2756032 A|
|Publication date||Jul 24, 1956|
|Filing date||Nov 17, 1952|
|Priority date||Nov 17, 1952|
|Publication number||US 2756032 A, US 2756032A, US-A-2756032, US2756032 A, US2756032A|
|Inventors||Alvis Yates Dowell|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (12), Referenced by (97), Classifications (14)|
|External Links: USPTO, USPTO Assignment, Espacenet|
July 24, 1956 A. Y. DOWELL HEATER Filed Nov. 17, 1952 INVENTOR HEAT EXCHANGE United States Patent HEATER Alvis Yates Dowell, Washington, D. C., assignor to Radiator Specialty Company, Charlotte, N. C., a corporation of North Carolina Application November 17, 1952, Serial No. 320,973
4 Claims. (Cl. 257-246) The invention relates to heaters of the character employed for extracting heat ordinarily wasted in smoke and products of combustion escaping through fines and chimneys to the atmosphere.
Heretofore heaters of many kinds have been produced, however, they have been complicated, expensive, impractical and otherwise unsatisfactory failing to solve the problem of the recovery of heat being wasted.
It is an object of the invention to provide a simple, inexpensive heater for extracting heat from a flue or chimney and by means of which a substantial saving in heat can be satisfactorily and efiiciently accomplished.
Another object of the invention is to provide a heater which can be applied to a conventional flue or pipe which extends to a chimney through which the smoke is discharged, and which heater can be used for heating with or without recirculation, as well as a heater constructed to extract and save maximum heat.
Further objects and advantages, of the invention will be apparent from the following description taken in conjunction with the accompanying drawings, wherein:
Fig. 1 is an elevation disclosing one application .of the invention as applied to the smoke pipe of a furnace.
Fig. 2 is a longitudinal section through the heater of Fig. 1.
Figs. 3, 4, 5 and 6 are fragmentary perspectives of the ends of four additional kinds of heaters, and
Fig. 7 is a diagrammatic view illustrating the use of one of the heaters in supplying heat to a room or space.
Briefly stated, the invention comprises a heater which may be substituted for a joint or section of a pipe through which smoke or other products of combustion are discharged to the atmosphere. The heater comprises an inner or smoke pipe about which is concentrically disposed a structure such as fins or the like therein in order to extract maximum heat from the wall of the smoke pipe. A blower preferably is employed for forcing air to be heated through the heater in contact with the heat exchange structure so that the heated air may then be used for heating a room or the like.
With particular reference to the drawing, heat in smoke from any source such as for example a furnace 10 is discharged through a series of pipe sections or fiue 11 to a chimney 12 all of which are conventional.
Around the pipe 11 is disposed a larger pipe or jacket 13 of similar conventional character and including rivets 14. The pipe 13 may be of any desired character.
Between the pipes 11 and 13 there is disposed structure which provides extended surfaces or fins over which air can flow. This facilitates the conduction of heat from the wall of the pipe 11 into the space between the pipes 11 and 13. The heat exchange structure illustrated between the pipes 11 and 13 may be of any desired character, however, as shown in Figs. 2, 3, 4 and 5, it consists of spring members 15, 16, 17 and 18. The spring members 16, 17 and 18 have axial folds and are generally in the nature of split rings with joints 19, 20 and 21. The spring heat exchange members 16, 17 and 18 being in ice 2 difierent shapes or over all configuration depending "upon that preferred and suitable for the particular installation. This spacing structure maintains the pipes in their concentric relation.
In Fig. 2 the member 15 is spiral to cause the air to travel in a spiral path around the smoke pipe before it is discharged through the outlet 22. Y Y
In Fig. 3 the heat exchange member 16 consists of an annulus havingaxially disposed portions with flat bottoms and tops and with the connecting portions inclined relative to the diameter of the concentric pipes. The heat exchange member of Fig. 4 is similar to that of Fig. 3 except that the axially disposed portions'at the top are narrower and consequently these portions may be described as triangular since they have greater contact with the inner pipe than with the outer pipe. With this construction transfer of heat from the heat exchange member to the outer pipe will be reduced.
The spring ring heat exchange member 18 of Fig. 5 includes corrugations or convolutionswhich alternately engage the exterior surface of the smoke pipe and the interior surface of the pipe which forms the jacket.
In Fig. 6 the smoke pipe is the same, but theouter pipe or jacket 13' is formed of two semi-cylindrical sections each having a U-shaped slot 23 along one side edge and an inwardly turned tongue 24 along itsopposite edge so that when two of these sections are longitu dinally together they form a complete pipe section with diametrically disposed flanges which extend inwardly sufficiently to engage a smoke form 11 on which the jacket is assembled, thus dividing the space between the smoke pipe and the jacket into a pair of chambers, one on each side of the smoke pipe. In each of these chambers, preferably is disposed a semi-circular heat conducting member 25 substantially equal to one-half of either of the heat exchange members 16, 17 or 18 of Figs. 3, 4 and 5. With the heater of Fig. 6 the inlet and discharge will be located at the same end so that the air will traverse each chamber before being discharged.
The heaters of Figs. 1 to 7 inclusive may include end caps 26 to maintain the parts in assembled relation with the outer casings or jackets in properly spaced relation to the smoke pipes 11 on which they are mounted. If desired, air to be heated may be admitted by, omitting the upper end cap in Fig. 2.
If it is desired to reduce the flow'of heat from the heat exchange member to the outer pipe, this can be accomplished by use of a sleeve of insulation or by the spacing of the heat exchange member slightly from the outer jacket by the end caps 26.
In Fig. 7 is disclosed the heater employed for supplying heat to a room in a circulating system, air being taken through pipe 28 through the heat exchanger or heater under the influence of the blower 29 and returned to the room through the return pipe 30.
It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited by that which is shown in the drawing and described in the specification but only as indicated in the appended claims.
What is claimed is:
1. An economy effecting heat exchange kit for application about a smoke pipe through which medium carrying heat is adapted to pass, a jacket for said pipe comprising two semi-cylindrical segments each having inwardly directed edges disposed lengthwise of the pipe providing a tongue and a groove whereby two segments may be connected, the inwardly disposed portions of said edges being of a length corresponding to the differences in radii between said pipe and said jacket and being in contact with the pipe thereby providing longitudinal Patented July 24, 1956 partitions between said pipe and jacket when the parts are assembled, heat exchange structure for conducting heat from said pipe into the space between said pipe and said ,jacket, said heat exchange structure being of spring material of good heat conducting properties and of a size and configuration to resiliently engage said pipe and jacket, and being formed of longitudinal segments disposable between and corresponding to the space between said longitudinal partitions, removable caps for disposition over the ends of said jacket, means for the admission and discharge of air into the space between said pipe and jacket, and means for producing movement of air through said space. 1 1
2. Economy effecting heat exchange structure comprising a pipe through which medium carrying heat is adapted to pass, a jacket for said pipe comprising multiple segments each having inwardly directed edges disposed lengthwise of thepipe providing a tongue and a groove whereby two segments may be connected, the inwardly disposed portions of said edges being of a length corresponding to the differences in radii between said pipe and said jacket and being in contact with the pipe thereby providing longitudinal partitions between said pipe and jacket when the parts are assembled, heat exchange structure for conducting heat from said pipe into the space between said pipe and said, jacket, said heat exchange structure being of spring material of good heat conducting properties and of a size and configuration to resiliently engage said pipe and jacket, and being formed of longitudinal segments disposable between and corresponding to the space between said longitudinal partitions, removable caps for disposition over the ends of said jacket, means for the admission and dischargetof air into the space between said pipe and jacket, and means for producing movement of air through said space.
3. A heater for application about a smoke pip through whichsmoke is adapted to pass comprising a jacket for said pipe composed of two semi-cylindrical segments having longitudinal edges disposed lengthwise of the pipe and providing tongue and groove connectionsbetween the segments, said edges having inwardly disposed portions of a length corresponding to the dif ferences in radii between said pipe and said jacket and being in contact with the pipe thereby providing longitudinal partitions in said heater, heat exchange structure for conducting heat from said pipe into the space between said pipe and said jacket, said heat exchange structure being of spring metal of good heat conducting properties and of a diameter and curvature to resiliently engage said pipe and being formed of longitudinal segments disposable between said pipe and said jacket and corresponding to the space about the pipe, said longitudinal segments interfitting with said partitions, end caps for disposition over the extremities of said jacket, means whereby air to be heated may be admitted into and discharged from the space between said pipe and jacket, and means for producing circulation of air through said heater.
4. A heater for application about a smoke pipe through which smoke is adapted to pass comprising a jacket for said pipe, said jacket having longitudinal edges disposed lengthwise of the pipe, said edges being connected to each other by a tongue and groove, said edges having inwardly disposed portions of a length substantially corresponding to the difierences in radii between said pipe and said jacket and being in contact with the pipe thereby providing a longitudinal partition in said heater, heat exchange structure for conducting heat from said pipe into the space between said pipe and said jacket, said heat exchange structure being of spring metal of good heat conducting properties and of a diameter and curvature to resiliently engage said pipe and being formed of longitudinal segments disposable between said pipe and said jacket and corresponding to the space about the pipe, said longitudinal segments interfitting with said partition, end caps closing the extremities of said jacket, and means whereby air to be heated may be admitted into and discharged from the space between said ,pipe and jacket.
References Cited in the file of this patent UNITED STATES PATENTS 256,955 Betts Apr. 25, 1882 1,887,760 Hauser Nov. 15, 1932 1,910,199 Brady May 23, 1933 1,930,285 Robinson Oct. 10, 1933 2,316,273 Meyer et al Apr. 13, 1943 2,378,646 Manning June 19, 1945 2,424,221 Brown, Jr. July 22, 1947 2,456,775 Fausek et al Dec. 21, 1948 2,468,909 Yeager et al. May 3, 1949 2,692,763 Holm Oct. 26, 1954 FOREIGN PATENTS 117,443 Australia of 1943 493,192 France of 1919
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US256955 *||Sep 12, 1881||Apr 25, 1882||Sheet-metal pipe|
|US1887760 *||Nov 21, 1929||Nov 15, 1932||Crane Co||Furnace jacket|
|US1910199 *||Mar 17, 1932||May 23, 1933||Harry L Brady||Heat saver and humidifier|
|US1930285 *||May 27, 1929||Oct 10, 1933||Roy H Robinson||Built up metal tube, frame and skeletonized metal member of high strength weight, and method of forming same|
|US2316273 *||Sep 17, 1940||Apr 13, 1943||Klein Friedrich||Heater|
|US2378646 *||Sep 19, 1942||Jun 19, 1945||Thermek Corp||Method of making heat exchangers|
|US2424221 *||Sep 4, 1944||Jul 22, 1947||Brown Fintube Co||Heat exchanger|
|US2456775 *||Nov 16, 1944||Dec 21, 1948||Fausek Arthur J||Heat exchanger|
|US2468909 *||Jan 3, 1946||May 3, 1949||Cnossen||Auxiliary air heater|
|US2692763 *||Mar 8, 1952||Oct 26, 1954||Air Preheater||Supporting spacer for annular corrugated fins|
|AU117443B *||Title not available|
|FR493192A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2903017 *||Feb 12, 1958||Sep 8, 1959||R W Mfg Co||Pipe support|
|US2950740 *||Apr 29, 1957||Aug 30, 1960||Flue conduits with heat transfer elements therein|
|US2963069 *||Jul 28, 1958||Dec 6, 1960||Stephen F Pasternak||Apparatus for forming heat exchange tubing|
|US2976128 *||Jan 28, 1959||Mar 21, 1961||Continental Carbon Co||Apparatus for making carbon black|
|US3001767 *||Nov 16, 1959||Sep 26, 1961||Kenmore Machine Products Inc||Tubular structure|
|US3033651 *||Jan 16, 1959||May 8, 1962||Contiental Carbon Company||Method and apparatus for making carbon black|
|US3044257 *||Jun 2, 1958||Jul 17, 1962||Thiokol Chemical Corp||Combustion chamber outer jacket|
|US3102790 *||Jul 15, 1960||Sep 3, 1963||Continental Carbon Co||Apparatus for carbon black manufacture|
|US3113595 *||Aug 1, 1960||Dec 10, 1963||Ric Wil Inc||Pipe support|
|US3122824 *||Apr 13, 1959||Mar 3, 1964||Jacob Tobler||Method for producing radiators|
|US3143404 *||Sep 30, 1960||Aug 4, 1964||Exxon Research Engineering Co||Gas chromatography columns|
|US3200848 *||May 29, 1963||Aug 17, 1965||Ichizo Takagi||Heat exchanger tubes|
|US3332446 *||May 15, 1964||Jul 25, 1967||Douglas B Mann||Cryogenic transfer line arrangement|
|US3438618 *||Sep 8, 1966||Apr 15, 1969||Alco Standard Corp||Vacuum heat treating furnace|
|US3545063 *||Dec 17, 1968||Dec 8, 1970||John E Mitchell Co Inc||Method of assembling an evaporator having a helical channel|
|US3783483 *||Sep 11, 1972||Jan 8, 1974||Borg Warner Ltd||Method of making a fluid coupling member|
|US3809128 *||Jun 3, 1971||May 7, 1974||Bridgestone Tire Co Ltd||Floating and submerging controllable hose|
|US3837364 *||Nov 21, 1972||Sep 24, 1974||Fraenk Isolierrohr & Metall||Flexible sheath for tachometer shafts or the like|
|US3857680 *||Nov 1, 1971||Dec 31, 1974||Getters Spa||Catalyst cartridge|
|US3861162 *||Mar 16, 1973||Jan 21, 1975||Refrigerated Sea Water Inc||Cooling system and heat transfer assembly|
|US3890104 *||May 3, 1972||Jun 17, 1975||Getters Spa||Catalytic cartridge|
|US3990506 *||Jan 20, 1975||Nov 9, 1976||Doyle George H||Heat exchanger|
|US3997002 *||Jul 16, 1975||Dec 14, 1976||Wall Colmonoy Corporation||Aircraft muffler and heater assembly|
|US4184544 *||Oct 31, 1977||Jan 22, 1980||Ullmer Harold J||Apparatus and method for recovering waste heat from flue gases|
|US4209043 *||Oct 10, 1978||Jun 24, 1980||Rib Loc (Hong Kong) Ltd.||Plastic tubular objects|
|US4234085 *||Oct 25, 1978||Nov 18, 1980||Baker John D||Clip storage|
|US4263878 *||Jun 27, 1979||Apr 28, 1981||Thermo Electron Corporation||Boiler|
|US4278126 *||May 5, 1980||Jul 14, 1981||Skrzypek Frank M||Heat exchanger for furnace flue|
|US4381819 *||May 21, 1981||May 3, 1983||Paolino Ralph J||Flue heat reclaimer|
|US4386456 *||Oct 7, 1980||Jun 7, 1983||Phillips Petroleum Company||Method of assembling a unitary heat exchanger tube bundle assembly|
|US4432485 *||Sep 21, 1981||Feb 21, 1984||The United States Of America As Represented By The Secretary Of The Air Force||Corrutherm expansion fixture|
|US4590116 *||Feb 6, 1984||May 20, 1986||Bronzavia||Piece with integrated heat-insulating covering|
|US4619292 *||Jan 30, 1985||Oct 28, 1986||Apx Group, Inc.||Air gap pipe|
|US4656713 *||Oct 24, 1985||Apr 14, 1987||Ap Industries, Inc.||Method for forming an air gap pipe|
|US4786088 *||Jun 25, 1987||Nov 22, 1988||Asahi/America, Inc.||Double-containment thermoplastic pipe assembly|
|US4915121 *||Jun 21, 1989||Apr 10, 1990||Rains Robert L||Coaxial piping system|
|US4930544 *||Oct 20, 1988||Jun 5, 1990||Asahi/America, Inc.||Double-containment thermoplastic pipe assembly|
|US5022685 *||Aug 21, 1989||Jun 11, 1991||Hal Stiskin||Secondary containment system and method|
|US5060416 *||Aug 14, 1990||Oct 29, 1991||Seaberry Landscape, Inc.||Corrugated tree protector and tree protection method|
|US5127441 *||Nov 12, 1987||Jul 7, 1992||Rains Robert L||Coaxial piping system|
|US5143775 *||May 22, 1989||Sep 1, 1992||Ab Akerlund & Rausing||Shock-absorbing wrapping and a method for manufacturing such wrapping|
|US5247749 *||Apr 5, 1989||Sep 28, 1993||Cincinnati Milacron Inc.||Machine structure|
|US5363907 *||Oct 29, 1993||Nov 15, 1994||Dave Dunning||Hose cover and hose assembly|
|US5575066 *||May 27, 1992||Nov 19, 1996||Carpigiani S.R.L.||Method of manufacturing freezing cylinders for ice cream making machines|
|US5803127 *||Nov 27, 1996||Sep 8, 1998||R & R Precision Corp.||Coaxial piping systems|
|US6283159 *||Dec 10, 1998||Sep 4, 2001||Bestex Kyoei Co., Ltd.||Double-walled pipe structure|
|US6328074 *||Nov 13, 1998||Dec 11, 2001||Petrotechnik Limited||Pipe for conveying fluids such as petroleum products|
|US6405974 *||Jul 27, 2000||Jun 18, 2002||F. John Herrington||Ribbed core dual wall structure|
|US6434972||Sep 20, 2000||Aug 20, 2002||Behr Gmbh & Co.||Air conditioner with internal heat exchanger and method of making same|
|US6715285||Jul 26, 2002||Apr 6, 2004||Mandi Company||Stirling engine with high pressure fluid heat exchanger|
|US6955780||May 7, 2002||Oct 18, 2005||Proteus, Inc.||Multi-wall cylindrical structure, method of making such structure, and apparatus for carrying out such method|
|US7243498 *||Nov 23, 2004||Jul 17, 2007||Twinbird Corporation||Fin structure|
|US7438123 *||Jul 5, 2005||Oct 21, 2008||Sanoh Industrial Co., Ltd.||Pipe-type heat exchange device and manufacturing method thereof|
|US8047451 *||Apr 14, 2005||Nov 1, 2011||Mcnaughton Incorporated||Windshield heat and clean|
|US8201520||Mar 31, 2008||Jun 19, 2012||Rick Meritt Investments, Ltd.||Animal feeding apparatus|
|US8793961 *||Aug 17, 2013||Aug 5, 2014||Bradford O. Russell||Load bearing structural assembly|
|US9073771 *||Jun 15, 2012||Jul 7, 2015||Corning Incorporated||Integral capsule for blister suppression in molten glass|
|US9074371||Aug 4, 2014||Jul 7, 2015||Bradford O. Russell||Load bearing structural assembly|
|US9382145 *||Jun 30, 2015||Jul 5, 2016||Corning Incorporated||Integral capsule for blister suppression in molten glass|
|US9494261 *||Feb 11, 2013||Nov 15, 2016||Taiwan Semiconductor Manufacturing Company, Ltd.||Chemical dispense system with reduced contamination|
|US9574348 *||Jul 20, 2015||Feb 21, 2017||Charles Dwight Jarvis||Tubular composite beams|
|US9677716 *||Mar 3, 2014||Jun 13, 2017||The Boeing Company||Stagnant fuel thermal insulation system|
|US20020125607 *||May 7, 2002||Sep 12, 2002||Herrington F. John||Ribbed core dual wall structure|
|US20050045315 *||Aug 29, 2003||Mar 3, 2005||Seager James R.||Concentric tube heat exchanger and end seal therefor|
|US20050072484 *||Aug 27, 2004||Apr 7, 2005||Hans-Georg Haertl||Conduit for drawing off and/or supplying a fluid|
|US20050120722 *||Nov 23, 2004||Jun 9, 2005||Twinbird Corporation||Fin structure|
|US20050155748 *||Mar 14, 2005||Jul 21, 2005||Dana Canada Corporation||Concentric tube heat exchanger end seal therefor|
|US20060017284 *||Jul 5, 2005||Jan 26, 2006||Takeshi Tadokoro||Pipe-type heat exchange device and manufacturing method thereof|
|US20070023097 *||Aug 1, 2006||Feb 1, 2007||Nobel Plastiques||Underground pipe for transporting fuel and a method of fabricating it|
|US20070295825 *||Apr 14, 2005||Dec 27, 2007||Mcnaughton Patrick J||Windshield Heat and Clean|
|US20100186731 *||Aug 18, 2009||Jul 29, 2010||Michael Patrick Murray||American chimney furnace|
|US20120216915 *||Oct 4, 2010||Aug 30, 2012||National Institute Of Advanced Industrial Science And Technology||Hydrogen heat exchanger for a hydrogen filling system|
|US20130333420 *||Jun 15, 2012||Dec 19, 2013||Martin Herbert Goller||Integral capsule for blister suppression in molten glass|
|US20140174557 *||Mar 3, 2014||Jun 26, 2014||The Boeing Company||Stagnant Fuel Thermal Insulation System|
|US20140224334 *||Feb 11, 2013||Aug 14, 2014||Taiwan Semiconductor Manufacturing Company, Ltd.||Chemical Dispense System with Reduced Contamination|
|US20150323106 *||Jul 20, 2015||Nov 12, 2015||Charles Dwight Jarvis||Tubular composite beams|
|US20150368139 *||Jun 30, 2015||Dec 24, 2015||Corning Incorporated||Integral capsule for blister suppression in molten glass|
|USD622453||Oct 25, 2007||Aug 24, 2010||Rick Meritt Investments, Ltd.||Animal feeder|
|USD624706||Oct 22, 2009||Sep 28, 2010||Rick Meritt Investments, Ltd.||Animal feeder|
|USD624707||Oct 22, 2009||Sep 28, 2010||Rick Meritt Investments, Ltd.||Fawn feeder|
|USD624708||Oct 29, 2009||Sep 28, 2010||Rick Meritt Investments, Ltd.||Feeder for quail or turkey|
|USD624709||Oct 29, 2009||Sep 28, 2010||Rick Meritt Investments, Ltd.||Breeding pen feeder|
|USD629572 *||Oct 19, 2009||Dec 21, 2010||Rick Meritt Investments, Ltd.||Animal feeder|
|USD629975 *||Jul 21, 2009||Dec 28, 2010||Rick Meritt Investments, Ltd.||Feeding tube|
|USD629976||Oct 19, 2009||Dec 28, 2010||Rick Meritt Investments, Ltd.||Animal feeder|
|USD636942||Sep 27, 2010||Apr 26, 2011||Rick Meritt Investments, Ltd.||Fawn feeder|
|USD647253||Feb 21, 2011||Oct 18, 2011||Rick Meritt Investments, Ltd.||Wildlife feeder|
|USD681883||Feb 21, 2011||May 7, 2013||Rick Meritt Investments, Ltd.||Wildlife feeder|
|USRE39521 *||Feb 14, 2003||Mar 20, 2007||Proleus, Inc.||Ribbed core dual wall structure|
|CN104704311A *||Sep 3, 2013||Jun 10, 2015||三菱电机株式会社||Double-tube heat exchanger and refrigerating cycle device|
|CN104704311B *||Sep 3, 2013||Mar 1, 2017||三菱电机株式会社||双管式换热器和制冷循环装置|
|DE19944951A1 *||Sep 20, 1999||Mar 22, 2001||Behr Gmbh & Co||Air conditioning system has refrigerant circuit in which concentric tubular heat exchangers are inserted and wound in radial spiral or meandering form|
|DE19944951B4 *||Sep 20, 1999||Jun 10, 2010||Behr Gmbh & Co. Kg||Klimaanlage mit innerem Wärmeübertrager|
|EP0083379A1 *||Dec 31, 1981||Jul 13, 1983||Emil Kress||Heat exchanger|
|EP0281689A1 *||Mar 13, 1987||Sep 14, 1988||Shell Internationale Research Maatschappij B.V.||Fire resistant plastic structure.|
|EP1134532A1 *||Mar 9, 2001||Sep 19, 2001||La Termica snc||Flue with heat exchanger for heating rooms|
|WO2014054370A1 *||Sep 3, 2013||Apr 10, 2014||Mitsubishi Electric Corporation||Double-tube heat exchanger and refrigerating cycle device|
|U.S. Classification||165/121, 29/455.1, 428/188, 428/182, 29/890.48, 138/148, 29/890.36, 138/38, 165/156, 138/114, 138/151|