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Publication numberUS2823026 A
Publication typeGrant
Publication dateFeb 11, 1958
Filing dateSep 21, 1956
Priority dateSep 21, 1956
Publication numberUS 2823026 A, US 2823026A, US-A-2823026, US2823026 A, US2823026A
InventorsAmico Salvatore J D, Edward J Molitoris, Edwin F Hosey
Original AssigneeAmico Salvatore J D, Edward J Molitoris, Edwin F Hosey
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Heater assembly for salvaging heat lost with products of combustion
US 2823026 A
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Description  (OCR text may contain errors)

Feb. 11, 1958 s. J. DAMICO ETAL 2,823,026

HEATER ASSEMBLY FOR SALVAGING HEAT LOST WITH PRODUCTS 0F COMBUSTION 2 Sheets-Sheet Filed Sept. 21. 1956 INVENTORS SALVATOZE D'AMICOI ED000180 d. M01. I T0/.s,

EDWIN F. #05 EY,

I I I v I B Feb. 11, 1958 s. J. 'AMICO EI'AL 2,823,026

HEATER ASSEMBLY FOR SALVAGING HEAT LOST WITH PRODUCTS OF COMBUSTION Filed Sept. 21, 1956 2 Sheets-Sheet 2 INVENTOgs 07AM! O, MoL/rae/s,

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HEATER ASSEMBLY FOR SALVAGING HEAT i LOST WITH PRODUCTS or COMBUSTION Salvatore J. DAmico, Stafford Springs, Edward J. Molitons, Statfordville, and Edwin F. Hosey, Stalford Springs, Conn.

Application September 21, 1956, Serial No. 611,097

4 Claims. 01. 263-20) When heating a building, furnace or the like'with' a United 55w Q combustable material, a great amount of the heat being generated is expended through an exhaust conduit such as a chimney or Smokestack during the process of such generation, this being undesirable and costly. Various typesof equipment have heretofore been proposed for the purpose of salvaging the aforementioned heat loss, however, none have proved satisfactory.

A primary object of invention is to provide'a novel heater assembly for use on an exhaust conduit for products of combustion wherein some of the heat which normally would be lost is salvaged through novel means permitting clean and uncontaminated air to pass externally of the outer surface of the exhaust conduit and to be heated by conduction and convection and to be ultimately dispensed by means of a force draft.

A further object of invention is more specifically concerned with providing a novel heater assembly of the character involved incorporating a jacket member securable in circumposed relationship about an intermediate portion of an exhaust stack or conduit for products of combustion, said jacket member incorporating spaced inner and outer walls, said inner walls' incorporating an undulated'cross section providing a plurality of grooves which normally will be juxtaposed on the outer surface of the exhaust'conduit wherein air contained therein will be heated, said jacket member incorporating means for controlling the entrance of air drawn into said grooves, said grooves incorporating-means for communication with a hot-air compartment formed between the inner and outer walls, and a---fari assembly in-communication with the hot-air compartment for drawing air through the grooves after having been heated by the exhaust conduit, through the hot-air compartment and out of an egress portion of the fan assembly.

And yet a further object of invention in conformance with that set forth is to provide a novel heater assembly of the character involved which is readily and economically manufactured, easily installed and maintained, and highly practical, serviceable and acceptable for the purpose intended.

These together with other objects and advantages which will subsequently become apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a top plan view of the novel heater assembly installed on an intermediate portion of a tubular exhaust conduit such as a Smokestack;

ice

Figure 2 is a side elevation view of Figure 1, looking from the bottom toward the top thereof;

Figure 3 is a vertical section view taken substantially on line 3-3' of'Figure 1, portions being broken away and shown in section for clarity; and

Figure 4 is an enlarged fragmentary sectional view taken substantially on line 4-4 of Figure 2.

Referringrto the ,drawings in detail, indicated generally at 10 is a section of an exhaust conduit which has clampingly secured onan intermediate portion thereof about its outer periphery a novel heater assembly 12 constituting the invention.

The heater assembly 12 comprises a jacket member indicated generally at 14 incorporating a pair of mating sections or halves indicated generally at 16 and' 18 for the purpose of simplicity, the jacket member 14'will have the parts thereof described as an integral construction.

Thejacke't member 14 incorporates an outer wall 20 and inner wall 22 disposed in spaced relationship and defining therebetween a hot-air compartment 24. The jacket member 14 may have the outer wall 20 thereof formed as a plurality of angularly related panels, see Figure 1, providing'a greater area of contact with hot air when compared with a' cylindrical outer wall, for example. .Each of the sections 16 and 18 incorporate diametrically opposed longitudinally extending flanges 26 and 28, respectively, said flanges 26 and 28 being juxtapositionabl'e on each. other and incorporating aligned apertures therethrough for receiving nut and bolt assemblies 30 for retaining the jacket member in circumposed relationship o'n'the'exhaust conduit 10.

The inner wall 22 has a uniformly undulated cross section, see Figure 1, defining a plurality of longitudinally extending open ended grooves 32 extending the length thereof and opening away from the hot-air chamber 24. Adjacent grooves 32 have extending transversely'through opposite ends thereof notched out portions 34 and 36 at the respective lower and upper ends thereof;

The jacket member 14 incorporates on therespective sections 16 and 18 a mating transverse top and bottom wall 38 and 40, respectively, each of which having rotatably supported thereon an annular ring 42, conveniently formed as two sections 44 and 46 joined by means of juxtapositio-nable flange portions 48 and 50, respectively, see Figure l, secured by means of suitable nut and bolt assemblies 52. Extending about the inner periphery 54 of the rings 42 are a plurality of notched out portions 56 which are alignable with some of the open ends of the grooves 32, see Figure 1, for accordingly controlling the amount of air to be drawn within said grooves and subsequently pass into the hot-air compartment 24. The rings 42, see Figure 1, have conveniently formed therethrough arcuate slots 58 through which extend-suitable retaining screws 60 engageable in the bottom or top wall of the jacket member and accordingly retaining the rings 42 in various positions of adjustment on the jacket memher.

The outer wall 22 has extending therethrough, see Figure 4, anaperture portion 62 which has circumposed thereon an overlying housing 64 of a conventional suction fan assembly indicated generally at 66. The fan assembly 66 incorporates a suitable power source such as an electric motor 68 for rotating a squirrel cage type blade assembly 70, the central portion of which constituting the ingress portion of the fan assembly, said housing 64 of the fan assembly incorporating an egress conduit 72 in communication with the fan housing 64 for directing heated air therefrom. Indicated generally at 74 is a conventional thermostat control assembly incorporating a housing portion 76 having extending therefrom a thermocouple portion 78 extending into the hot-air compartment 24, The control assembly 74 may be utilized in the controls of the heater assembly for activating the fan assembly 66 when the temperature within the hot-air compartment has attained a particular predetermined value. 7

Accordingly, air'is drawn through the upper and lower ends of the jacket member 24 through the grooves 32 of the inner wall of said jacket member, said air being heated by the exhaust conduit 10, and accordingly heated air is drawn into the hot-air compartment 24 to subsequently be dispensed by means of the fan assembly 66.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A heater assembly for salvaging'heat from exhaust conduits for products of combustion comprising a jacket member including spaced tubular inner and outer walls and a transverse bottom and top wall, means on the jacket member for retaining the jacket member circumposed about an intermediate portion of an exhaust conduit, the inner and outer walls defining a hot-air compartment therebetween, the inner wall including an undulated cross section providing a plurality of elongated, uninterrupted, open-ended grooves opening away from the hotair compartment, means on the inner wall providing communication with the hot-air compartment through said grooves, means on the jacket member controlling air movement into the grooves, and a fan assembly on'the jacket member including an ingress portion in communication with the hot-air compartment and an egress portion for distributing heated air drawn from said compartment.

2. A heater assembly for salvaging heat from exhaust conduits for products of combustion comprising a jacket member including spaced tubular inner and outer walls and a transverse bottom and top wall, means on the jacket member for retaining the jacket member circumposed about an intermediate portion of an exhaust conduit, the inner and outer walls defining a hot-air compartment therebetween, the inner wall including an undulated cross section providing a plurality of elongated, uninterrupted, open-ended grooves opening away from the hot-air compartment, means on the inner wall providing communication with the hot-air compartment through said grooves, means on the jacket member controlling air movement into the grooves, and a fan assembly on the jacket member including an ingress portion in communication with the hot-air compartment and an egress portion for distributing heated air drawn from said compartment, said jacket member comprising a pair of mating sections including means for clampingly engaging the same about an exhaust conduit.

3. A heater assembly for salvaging heat from exhaust conduits for products of combustion comprising a jacket member including spaced tubular inner and outer walls and a transverse bottom and top wall, means on the jacket member for retaining the jacket member circumposed about an intermediate portion of an exhaust conduit, the inner and outer walls defining a hot-air compartment therebetween, the inner Wall including an undulated cross section providing a plurality of elongated, uninterrupted, open-ended grooves opening away from the hot-air compartment, means on the inner wall providing communication with the hot-air compartment through said grooves, means on the jacket member controlling air movement into the grooves, and a fan assembly on the jacket member including an ingress portion in communication with the hot-air compartment and an egress portion for distributing heated air drawn from said compartment, the grooves being uniformly and radially spaced on the inner wall, the means on the inner wall providing communication with the hot-air compartment comprising apertures extending transversely through opposite ends of adjacent grooves on the inner wall, said means controlling air movement into the grooves comprising annular rings rotatably mounted on the top and bottom walls of the jacket member, said rings including intermediate notch portions on the inner periphery thereof alignable with the open ends of certain grooves for permitting air to be drawn into the hot-air compartment adjacent the outer surface of an exhaust conduit upon which the jacket member is disposed.

4. A heater assembly for salvaging heat from exhaust conduits for products of combustion comprising a jacket member including spaced tubular inner and outer walls and a transverse bottom and top wall, means on the jacket member for retaining the jacket member circumposed about an intermediate portion of an exhaust conduit, the inner and outer walls defining a hot-air compartment therebetween, the inner wall including an undulated cross section providing a plurality of elongated, uninterrupted, open-ended grooves opening away from the hot-air compartment, means on the inner wall providing communication with the hot-air compartment through said grooves, means on the jacket member controlling air movement into the grooves, and a fan assembly on the jacket member including an ingress portion in communication with the hot-air compartment and an egress portion for distributing heated air drawn from said compartment, and thermostatic control means on the jacket member inuluding. a heat responsive end portion disposed in the hot-air compartment for controlling operation of the fan assembly in response to temperature changes in the hot-air compartment.

No references cited.

Non-Patent Citations
Reference
1 *None
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4263891 *Sep 11, 1979Apr 28, 1981Ilmar MetsRange ventilator
US4498524 *Sep 30, 1982Feb 12, 1985Jacobsen Orval EHeat exchanger with by-pass
US5215144 *Feb 18, 1992Jun 1, 1993Siemens AktiengesellschaftHeat exchanger
US5385299 *Mar 2, 1992Jan 31, 1995Zawada; Michael E.Fresh air intake system for a dwelling having central forced warm air heating
US5832988 *Aug 6, 1997Nov 10, 1998Lucent Technologies, Inc.Heat exchanger for outdoor equipment enclosures
US6119768 *Apr 20, 1999Sep 19, 2000Marconi Communications, Inc.Outdoor equipment cabinet
Classifications
U.S. Classification165/300, 165/101, 165/139, 165/122, 165/121, 165/47, 165/901, 165/154
International ClassificationF28D21/00
Cooperative ClassificationF28D21/0008, Y10S165/901
European ClassificationF28D21/00A4B6