US1738850A - Heater for automobiles - Google Patents

Description

DeC. 10, 1929. 1, J, SUNDAY 1,738,850

HEATER FOR AUT OMOB I LES Filed Sept, ll, 1925 hthhllltlt ltlt application tiled September '.lhis invention relates generally to heaters tor automobilesand consists oit certain novel teatures oft construction, combinations and y arrangements ot partsas will be moreltully t described and particularly pointed out in the appended claims.

lln theaccompanying drawing: n

lligure l.is a fragmentary side elevation ot a motor vehicle with a heater embodying Y l@ my invention attached thereto;

Figure 2 is an enlarged vertical longitudinal sectional view through the heater;

ligure 3 is a cross sectional view taken on the line 3 3 ot higure 2,

Referring now to the drawing, the numeral l. designates an exhaust conduit ot an automobile having a section 2 that preferably constitutes the shell or casing oit my heater. its shown, this section 2 preterably has a larger lfm diameter than the exhaust conduit ordinarily provided and is preferably termed ot several lengths ol2 tubing which are joined together.. ln order that tresh air trom the atmosphere may be heated thoroughly by the exhaust lll gases passing through the conduit l without building up bach pressure on the engine, l preterably provide a suitableshell that has a section 3 located within and preferably concentric with the shell section 2. .Als shown, l@ the torward end ot this section 3/ is connected to a tube t that extends through the shell sec-i tion 2 and terminates adjacent to the usual tan 5 ot the engine, while the rear end ot the section 3 is connected to a tube b that extends through the shell section 2 and leads to a suitable register 'i' located preterahly in the lloor d ot the automobile. i

ln use, the air trom the atmosphere will pass through the tube l into the shell 3 where it will be heated thoroughly by the exhaust gases4 assing through the shell section 2 and will t en pass upwardly through the tube 6 to the door register 7.

liti

ltd

lhus, from the foregoing description, it

M will be apparent that l ave provided an extremely simple -torm ot heater that is composedot a minimum number of parts lwhich may manutactured at a comparatively low cost and may be easily and quickly assembled. 1" reover, the air passing through the shell .ttllltlllltllillllhltll ll, that. serial llo. blatt?.

3 will be intensely heated due to its location within the shell section 2. .its this shell 3 is preferably concentric with the section 2, all surltaces ot the shell 3 will be sub jected 'to the exhaust gases passing through the shell section 2, hence the maximum heat will be obtained. llnasmuch as the diameter ot the shell section 2 is enlarged it will also be readily apparent that the exhaust gases will have a tree 4and unobstructed passage around the shell 3, hence bach` pressure will not be built up on the engine. ll/loreover, the arrangement is such that the exhaust gases cannot escape trom the shell section 2 and into the tube 6 which conveys 'the air to the register.

Should the tube r6 worlr loose in the shell section 2, the exhaust gases will pass upward ly around the tube to the atmosphere.

ll/'hile it is believed that from the foregoing description the nature and advantages ot my invention are readily apparent, l desire to have it understood that ll do not limit myselt to what is herein shown and described and that such changes may be resorted to when desired as tall within the scope ot what is claimed.

What l claim as my invention is:

l. a heating apparatus tor an automobile body comprising a tube having its opposite o ends attachable to an automobile engine exhaust manifold and exhaust mutlder respectively and provided throughout substantially its entire length with a cross sectional area that is slightly larger than the cross sectional area of an ordinary exhaust Vconduit whereby the exhaust gases trom an automobile engine may llow into and through the tube and be utilized therein as a heating medium, said tube being impertorate except tor tour openings, two ot said openings being at one end ot said tube and constituting inlets 'lor'air and exhaust gases respectively, and the other two openings being at the other end ot said tube and constituting outlet openings tor air and exhaust gases respectively, and means open at its opposite ends to the atmosphere for conveying air trom the atmosphere into the tube atoresaid to be heated by the er1- gine exhaust gases therein, and thence from the tube to the atmosphere within a vehicle body, said means including a tubular conduitv having three sections arranged end to end, the intermediate section of said conduit being entirely within` and extending longitudinally of said tube, and the two other sections constituting a fresh air inlet and a hot air outlet respectively for said intermediate section and extending through the air inlet and'outlet openings aforesaid in said tube, the inlet section being open at its forward end to receive air from the atmosphere and having the portion thereof within the tube extending at a substantially obtuse angle with respect to the longitudinal median line of said tube so that `the exhaust gases flowing through the tube from the engine will be deflected but not materially retarded around the intermediate section within said tube to heat the air received therein from the air inlet section, and the outer section being adapted to receive the heated air from -the intermediate section and being open at its outer end whereby said heated air may be discharged there- -from through a vehicle body register to the atmosphere.

2. A heating apparatus for an automobile body comprising a tube constituting a portion of an engine exhaust conduit, and being imperforate except for four openings, two of said openings being at one end of said tube and constituting inlets for air and exhaust gases respectively, and the other two open-` ings being at the other end of said tube and constituting outlet openings for airfand exhaust gases respectively, and means open at its opposite ends to the atmosphere for conveying air from the atmosphere into the tube to be heated by the engineexhaust gases and thence from the tube to the atmosphere within a vehicle body,.said means including a tubular conduit having three sections arranged end to end, the intermediate section of said conduitfbeing entirely within and extending longitudinally of said tube, and

' the two other sections constituting a fresh air inlet and a hotair outlet respectively for said intermediate section and extending throughthe air inlet and outlet openings aforesaid in said tube, the inlet section being open at its forward end to the atmosphere and adapted to convey fresh air from the atmosphere to the intermediate section within said tube, and the outlet section being adapted to receive the heated air from the intermediate section and being open at its outer end to the atmosphere whereby such heated air may be` discharged therefrom through a vehicle body register to the atmosphere.

3. A `heating apparatus for an automobile body comprising a tube having open portions at its opposite ends attachable to an automobile engine exhaust manifold and exhaust muffler respectively and provided throughout substantially its entire length'with a cross sectional area that is slightly larger than the cross sectional area of an ordinary exhaust conduit whereby the exhaust gases from an automobile engine may flow into and through the tube and be utilized therein as a heating medium', said tube being otherwise imperforate except for two openings one at each end of said tube, and means open at its opposite ends to the atmosphere for conveying air from the atmosphere into the tube aforesaid to be heated by the engine exhaust gases therein, and thence from the tube to the atmosphere within a vehicle body, said means including a tubular conduit having three sections, the intermediate section of said conduit being entirely'within and extending longitudinally of said tube, and the other sections constituting a fresh air inlet and a hot air outlet respectively for said intermediate section and extending through/the air inlet and outlet openings aforesaid in said tube, the inlet section being open at its forward end to receive air from the atmosphere and having the portion thereof within a tube extending at a substantially obtuse angle with respect to the longitudinal median lineof said tube so that the exhaust gases flowing through the tube from the engine will be deflected but not materially retarded around the intermediate section within said tube to heat the air received therein from the air inlet section, and the outlet section being adapted to receive the heated air from the intermediate section and being open at its outer end whereby said heated air may be discharged therefrom through a vehicle body register to the atmosphere.

4. A heating apparatus for an automobile body comprising a tube constituting a portion of an engine exhaust conduit, and being imperforate between its ends except for four openings, two of said openings being at one end of said tube, and the other two openings being at the other end of said tube, and means open-at its opposite ends to the atmosphere for conveying air from the atmosphere into the tube to be heated by the engine exhaust gases and thence from the tube to the atmosphere within a vehicle body, said means including a tubular conduit, having three sections, the intermediate section of said conduit being entirely within and extending longitudinally of said tube, and the other sections constituting a fresh air inlet and a hot air outlet respectively for said intermediate section, the inlet section extending through one of said openings at one end of the tube and being open'at its forward end to the atmosphere and adapted to convey fresh air from the atmosphere to the intermediate section within said tube, and the outlet section extending through one of said openings at the other end of the tube and being adfiptd t0 receive the heated air from the intermediate section and being open at its outer end to the atmosphere whereby such heated air may be discharged therefrom through a vehicle body register to the atmosphere.

In testimony whereof I affix my signature.

.JAMES J. SUNDAY.

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