US3908629A - Hot air furnace with improved heat exchanger construction - Google Patents
Hot air furnace with improved heat exchanger construction Download PDFInfo
- Publication number
- US3908629A US3908629A US420756A US42075673A US3908629A US 3908629 A US3908629 A US 3908629A US 420756 A US420756 A US 420756A US 42075673 A US42075673 A US 42075673A US 3908629 A US3908629 A US 3908629A
- Authority
- US
- United States
- Prior art keywords
- heat exchange
- plate member
- exchange unit
- insulating material
- heat exchanger
- 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
Links
- 238000010276 construction Methods 0.000 title description 5
- 239000011810 insulating material Substances 0.000 claims abstract description 34
- 239000011152 fibreglass Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000006872 improvement Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 description 23
- 238000000034 method Methods 0.000 description 11
- 239000000779 smoke Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 101150096674 C20L gene Proteins 0.000 description 1
- 102220543923 Protocadherin-10_F16L_mutation Human genes 0.000 description 1
- 101100445889 Vaccinia virus (strain Copenhagen) F16L gene Proteins 0.000 description 1
- 101100445891 Vaccinia virus (strain Western Reserve) VACWR055 gene Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets
-
- 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
- F24H9/0052—Details for air heaters
Definitions
- ABSTRACT A hot air furnace which includes at least one heat exchange unit having at least one mounting flange section defining an opening therein and a plate member having an aperture therein corresponding to at least one of the openings in said heat exchange unit and in alignment therewith with sheet insulating material interposed between said plate member and heat exchange unit by virtue of the said flange being exl,000,017 8/1911 Kitchen 285/213 1 291 578 1,1919 285/222 panded into a plane parallel to that of said plate mem- 1397980 H931 colemanw 385/313 ber to thereby secure the plate member and inter- 1 995,056 3 1935 pickmanw 3 9 posed insulating material in place on said heat ex- 2,353,477 7/1944 Koppe1.... 85/205 change unit. 2,382,489 8/1945 Koppelm. ass/20s 2,401,502 6/1946 Olds 126/99 R 3 Claims, 6 Drawmg F Igures k
- HOT AIR FURNACE WITH IMPROVED HEAT EXCI-IANGER CONSTRUCTION BACKGROUND OF THE INVENTION In the construction of gas-fired furnaces it is conventional to weld a pair of clam shells together to form a heat exchanger section and to incorporate at least one such section in the furnace.
- An opening is provided in the lower or pouch section of the heat exchange unit for insertion of a gas burner so that the section can be fired up to a predetermined capacity, frequently of the order of 25,000 B.T.U. per hour.
- An opening is also provided in the upper section of each heat exchange unit to permit collection and discharge of the flue gases produced by the gas burner.
- a pouch plate over the pouch area and a front partition plate over the upper section of the heat exchanger.
- the combination of the pouch plate and front partition plate is then usually sealed to the sides of the furnace in order to isolate the air being heated by the heat exchanger sections in the rear of the furnace from the furnace controls located in the front.
- gas-fired furnace is the COMFORTMAKER furnace manufactured by The Singer Company.
- a hot air furnace having at least one heat exchanger to which there is secured a pouch plate and/or front partition plate in a manner which results in a more leakproof heat exchanger structure and one which may be produced more readily and at a lower cost.
- Another object of the invention is the provision of a hot air furnace having at least one heat exchanger which is less susceptible to cracking during the heat and off cycles of the furnace.
- FIG. 1 is a front view, partially broken away, of a gasfired furnace showing the pouch plate and front partition plate secured in place on the heat exchanger;
- FIG. 2 is a top view of a clam shell heat exchange unit with the flange defining the smoke opening extended forwardly;
- FIG. 3 is a view similar to FIG. 2 and illustrates the first step in the process of the invention
- FIG. 4 is a view similar to FIG. 3 and illustrates the second step in the process of the invention.
- FIG. 5 is a cross-sectional view of the heat exchange unit depicted partially in phantom in FIG. 1 taken along line 55 of FIG. 1;
- FIG. 6 is a view similar to FIG. 4 illustrating the insulation and front partition plate applied to a pair of heat exchange units.
- FIG. 1 there is shown a portion of a hot air furnace 10, preferably gas-fired, which includes at least one heat exchanger 11 formed by a pair of clam shells which have been welded together.
- the lower or pouch section 12 of the heat exchanger is provided with an opening 13 for reception of means such as a gas-burner (not shown) for firing of the unit.
- the upper section of the heat exchanger is generally corrugated as indicated by reference numeral 14 to increase the surface area and thus the heat transfer capacity of the unit.
- the upper section is also given a smoke opening 15 to permit the discharge of flue gases.
- the opening in the upper section is defined by a forwardly extending mounting flange 16 which, as will be hereinafter described, is flared back or expanded such that the free end is caused,to lie in a plane substantially perpendicular to the longitudinal axis of the flange.
- a sheet of material 17, such as sheet metal, commonly referred to as the vestibule panel or front partition plate, is secured in place to the front of the heat exchange unit.
- a sheet of insulating material 18, preferably one-half inch thick fiberglass, is interposed between the partition plate and the heat exchanger. Where desired the insulating material may be cemented to the back of the partition plate by means of any conventional adhesive.
- the fiberglass employed may be provided with a foil material so that a portion of the heat generated by the heat exchanger will be reflected back thereby enabling the maintenance of a lower temperature on the partition plate.
- the lower or pouch section 12 of the heat exchanger has secured in place thereover a pouch plate 19.
- the pouch section is provided with a mounting flange 20 which is forwardly extending prior to assembly of the pouch plate and which defines the pouch opening. Also, as with the front partition plate, it has been found advantageous to interpose a sheet of insulating material between the pouch plate and the pouch section of the heat exchanger.
- the heat exchanger is formed in the region of the smoke opening with a flared end portion 21 that is turned in to offer a shoulder 22 for a purpose to be hereinafter described.
- Mounting flange 16 then extends forwardly from the shoulder.
- the pouch section is similarly constructed with relation to the pouch opening.
- the front partition plate and sheet insulating material are secured in place by a technique which is expeditious and avoids the need for a welding step or the use of any screws or other like fastening means.
- the sheet of insulating material is given an opening somewhat less than the diameter of the smoke opening in the heat exchanger.
- the partition plate and insulating material are assembled such that their openings are in alignment and, with respect to the total dimensions of both components, such that the assembly may be secured in place on the heat exchanger with such openings in alignment with the smoke opening.
- the first step in the process comprises urging the assembly into place such that the flange 16 of the heat exchanger, whose inner diameter defines the smoke opening, projects through the opening in the partition plate and also through the opening in the sheet insulating material.
- the flange emerges from the opening in the insulating material it causes a sleeve 23 of such material to form about its external surface as shown in FIG. 3. It will be observed that apart from the sleeve of insulating material thus formed on the flange the remainder of the insulating material is interposed between the partition plate and the heat exchanger in planar juxtaposition.
- the next step in the process involves the expansion of the flange 16, such as by an expander device (not shown) so as to deform the outer portion thereof into a plane roughly parallel with that of the partition plate as may be seen from FIG. 4.
- the flange, and the insulating material which previously formed sleeve 23, are urged against shoulder 22 to form a leakproof joint and at the same time secure the partition plate and sheet insulating material in place on the heat exchanger.
- the pouch plate and front partition plate may be applied as separate and distinct components, or a single plate member having two openings therein may serve as the cover plate for both the upper section and the pouch section of the heat exchanger.
- a single plate member having two openings therein may serve as the cover plate for both the upper section and the pouch section of the heat exchanger.
- FIG. 6 illustrates the securing in place of the front partition plate and sheet insulating material across the front of a plurality of heat exchange units. It is within the ambit of the invention to practice the process in the construction of a furnace having as many as ten heat exchangers or conceivably an even greater number where this technique is considered appropriate.
- a hot air furnace which includes at least one heat exchange unit having at least one mounting flange section defining an opening therein, and at least one plate member having an aperture therein accommodating said mounting flange section of said heat exchange unit projecting therethrough and connected to said heat exchange unit, the improvement which comprises a layer of insulating material extending parallel and juxtaposed to a major portion of said plate member adjacent to said aperture, said layer of insulating material extending through said aperture and interposed between said at least one plate member and the mounting flange section of said heat exchange unit, an outer portion of said flange section of said heat exchange unit projecting through said plate member being expanded about said aperture to thereby secure said plate member to said heat exchange unit and said insulating material extending between the plate member and the expanded outer portion of said mounting flange section so as to effect a leakproof joint between said heat exchange unit and said plate member.
- a hot air furnace according to claim 1 in which said layer of insulating material is adhered substantially coextensively with one side of said plate member.
Abstract
Description
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420756A US3908629A (en) | 1973-11-30 | 1973-11-30 | Hot air furnace with improved heat exchanger construction |
US05/495,990 US3940837A (en) | 1973-11-30 | 1974-08-09 | Hot air furnace with improved heat exchanger construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420756A US3908629A (en) | 1973-11-30 | 1973-11-30 | Hot air furnace with improved heat exchanger construction |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/495,990 Division US3940837A (en) | 1973-11-30 | 1974-08-09 | Hot air furnace with improved heat exchanger construction |
Publications (1)
Publication Number | Publication Date |
---|---|
US3908629A true US3908629A (en) | 1975-09-30 |
Family
ID=23667714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US420756A Expired - Lifetime US3908629A (en) | 1973-11-30 | 1973-11-30 | Hot air furnace with improved heat exchanger construction |
Country Status (1)
Country | Link |
---|---|
US (1) | US3908629A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4319631A (en) * | 1978-11-30 | 1982-03-16 | Adolf Margraf | Cooler for hot smoke-laden gases |
US4538338A (en) * | 1983-05-02 | 1985-09-03 | Snyder General Corporation | Method for manufacturing a furnace heat exchanger and plate assembly |
US4547943A (en) * | 1980-08-15 | 1985-10-22 | Snyder General Corporation | Method of manufacturing a heat exchanger and plate assembly |
US4649894A (en) * | 1981-12-11 | 1987-03-17 | Snydergeneral Corporation | Heat exchanger and plate assembly and method of manufacture |
US5575330A (en) * | 1993-01-22 | 1996-11-19 | Alco Industries, Inc. | Furnace heat exchanger seal and method of making same |
US20100089561A1 (en) * | 2008-10-10 | 2010-04-15 | Denso International America, Inc. | Pipe joint block for fluid transfer |
US20120085521A1 (en) * | 2010-10-08 | 2012-04-12 | Carrier Corporation | Furnace heat exchanger attachment |
US20150020791A1 (en) * | 2010-01-15 | 2015-01-22 | Lennox Industries, Inc. | Converging-diverging combustion zones for furnace heat exchanges |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US732912A (en) * | 1902-05-24 | 1903-07-07 | Henry Anderson | Chimney-flue thimble. |
US1000017A (en) * | 1911-05-02 | 1911-08-08 | Richard S Kitchen | Protector for the beads of boiler-flues. |
US1291578A (en) * | 1918-02-28 | 1919-01-14 | James Mcphail | Steam-boiler. |
US1397080A (en) * | 1918-01-15 | 1921-11-15 | Charles S Coleman | Boiler-tube and end-plate connection |
US1995056A (en) * | 1933-08-31 | 1935-03-19 | Brick In Steel Fire Bowl Compa | Fire bowl |
US2353477A (en) * | 1943-06-24 | 1944-07-11 | Smith Corp A O | Hot-water tank connection |
US2382489A (en) * | 1942-07-13 | 1945-08-14 | Smith Corp A O | Connection for containers |
US2401502A (en) * | 1942-06-06 | 1946-06-04 | Coleman Lamp & Stove Co | Heating unit |
US2486675A (en) * | 1946-11-20 | 1949-11-01 | Smith Corp A O | Seal for hot-water tanks |
US2585650A (en) * | 1946-09-11 | 1952-02-12 | Borg Warner | Sectional drawn sheet metal body for air-heating furnaces |
US2742896A (en) * | 1950-01-02 | 1956-04-24 | Rekuperator K G Dr Ing Schack | Fuel burning hot air generator |
US3390499A (en) * | 1965-07-08 | 1968-07-02 | Svenska Flaektfabriken Ab | Mounting frame of sheet metal |
US3643987A (en) * | 1970-09-11 | 1972-02-22 | Gsw Ltd | Spout structure |
US3761116A (en) * | 1972-05-22 | 1973-09-25 | Arvin Ind Inc | Tube-plate interconnection |
-
1973
- 1973-11-30 US US420756A patent/US3908629A/en not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US732912A (en) * | 1902-05-24 | 1903-07-07 | Henry Anderson | Chimney-flue thimble. |
US1000017A (en) * | 1911-05-02 | 1911-08-08 | Richard S Kitchen | Protector for the beads of boiler-flues. |
US1397080A (en) * | 1918-01-15 | 1921-11-15 | Charles S Coleman | Boiler-tube and end-plate connection |
US1291578A (en) * | 1918-02-28 | 1919-01-14 | James Mcphail | Steam-boiler. |
US1995056A (en) * | 1933-08-31 | 1935-03-19 | Brick In Steel Fire Bowl Compa | Fire bowl |
US2401502A (en) * | 1942-06-06 | 1946-06-04 | Coleman Lamp & Stove Co | Heating unit |
US2382489A (en) * | 1942-07-13 | 1945-08-14 | Smith Corp A O | Connection for containers |
US2353477A (en) * | 1943-06-24 | 1944-07-11 | Smith Corp A O | Hot-water tank connection |
US2585650A (en) * | 1946-09-11 | 1952-02-12 | Borg Warner | Sectional drawn sheet metal body for air-heating furnaces |
US2486675A (en) * | 1946-11-20 | 1949-11-01 | Smith Corp A O | Seal for hot-water tanks |
US2742896A (en) * | 1950-01-02 | 1956-04-24 | Rekuperator K G Dr Ing Schack | Fuel burning hot air generator |
US3390499A (en) * | 1965-07-08 | 1968-07-02 | Svenska Flaektfabriken Ab | Mounting frame of sheet metal |
US3643987A (en) * | 1970-09-11 | 1972-02-22 | Gsw Ltd | Spout structure |
US3761116A (en) * | 1972-05-22 | 1973-09-25 | Arvin Ind Inc | Tube-plate interconnection |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4319631A (en) * | 1978-11-30 | 1982-03-16 | Adolf Margraf | Cooler for hot smoke-laden gases |
US4547943A (en) * | 1980-08-15 | 1985-10-22 | Snyder General Corporation | Method of manufacturing a heat exchanger and plate assembly |
US4649894A (en) * | 1981-12-11 | 1987-03-17 | Snydergeneral Corporation | Heat exchanger and plate assembly and method of manufacture |
US4538338A (en) * | 1983-05-02 | 1985-09-03 | Snyder General Corporation | Method for manufacturing a furnace heat exchanger and plate assembly |
US5575330A (en) * | 1993-01-22 | 1996-11-19 | Alco Industries, Inc. | Furnace heat exchanger seal and method of making same |
US20100089561A1 (en) * | 2008-10-10 | 2010-04-15 | Denso International America, Inc. | Pipe joint block for fluid transfer |
US7926854B2 (en) * | 2008-10-10 | 2011-04-19 | Denso International America, Inc. | Pipe joint block for fluid transfer |
US20150020791A1 (en) * | 2010-01-15 | 2015-01-22 | Lennox Industries, Inc. | Converging-diverging combustion zones for furnace heat exchanges |
US20120085521A1 (en) * | 2010-10-08 | 2012-04-12 | Carrier Corporation | Furnace heat exchanger attachment |
US9623471B2 (en) * | 2010-10-08 | 2017-04-18 | Carrier Corporation | Furnace heat exchanger attachment |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MERCANTILE TEXAS CREDIT CORPORATION; MERCANTILE CO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SYNDER GENERAL CORPORATION;REEL/FRAME:003985/0168 Effective date: 19820401 Owner name: MERCANTILE TEXAS CREDIT CORPORATION, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SYNDER GENERAL CORPORATION;REEL/FRAME:003985/0168 Effective date: 19820401 |
|
AS | Assignment |
Owner name: SNYDER GENERAL CORPORATION, A CORP. OF TEX. Free format text: ASSIGNS THE ENTIRE INTEREST, AS OF APRIL 2, 1982 SUBJECT TO LICENSES AND CONDITIONS RECITED;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:004051/0894 Effective date: 19820402 Owner name: SNYDER GENERAL CORPORATION Free format text: ASSIGNS THE ENTIRE INTEREST, AS OF APRIL 2, 1982 SUBJECT TO LICENSES AND CONDITIONS RECITED, SEE DOCUMENT FOR DETAILS;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:004051/0894 Effective date: 19820402 |
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Owner name: CITICORP INDUSTRIAL CREDIT, INC., 717 NORTH HARWOO Free format text: SECURITY INTEREST;ASSIGNOR:SYNDER GENERAL CORPORATION A TX CORP;REEL/FRAME:004307/0351 Effective date: 19840726 |
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STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
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Owner name: MCQUAY INC., A CORP. OF MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SNYDER GENERAL CORPORATION, A TX CORP.;REEL/FRAME:004607/0038 Effective date: 19860327 Owner name: SNYDER GENERAL CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MCQUAY INC.;REEL/FRAME:004607/0047 Effective date: 19860327 Owner name: MCQUAY INC., A CORP. OF MINNESOTA, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SNYDER GENERAL CORPORATION, A TX CORP.;REEL/FRAME:004607/0038 Effective date: 19860327 Owner name: SNYDER GENERAL CORPORATION, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MCQUAY INC.;REEL/FRAME:004607/0047 Effective date: 19860327 |
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Owner name: CITICORP INDUSTRIAL CREDIT INC., 2700 DIAMOND SHAM Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION;REEL/FRAME:004765/0735 Effective date: 19870630 Owner name: CITICORP INDUSTRIAL CREDIT INC.,TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION;REEL/FRAME:004765/0735 Effective date: 19870630 |
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Owner name: CITICORP NORTH AMERICA, INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION, A MN CORP.;REEL/FRAME:005013/0592 Effective date: 19881117 |
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