US1758239A - Heating apparatus - Google Patents

Description

May 13, 1930. .1.. PRIMRosE A HEATING APPARATUS- Filed Jan. 9, 1925 2 Sheets-Sheet 1 fuma/1ML ommswk t May 13, 1930. J. PRIMRosE HEATING APPARATUS Filed Jan. 9, 1925 2 Sheets-Sheet 2 Patented May 13, 1930 UNITED STATES `PArl-:N'r OFFICE JOHN PRIMROSE, OF DONGAN HILLS, NEW YORI/K, .ASSIGNOR TO FOSTER WHEELER CORPORATION, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK HEATING APPARATUS Application mea January 9, 1925. serial N. 1,347.

The present invention is directed to heating apparatus and more particularly to an arrangement of heating tubes in whiclnthe combined effects of heat of convection and heat of radiation are utilized to heat the tubes and their contents. In the present construction certain tubes are provided which are arranged in a chamber and so disposed therein that they receive heat mainly by radiation. The present invention has. for its object the provision of means for supporting these tubes so that sagging of the tubes will be prevented while permitting expansion of the apparatus as a whole. Other and more detailed objects of the present invention will hereinafter appear in the accompanying specification and claims and will be illustrated in the drawings which by way of illustration portray an embodiment of my invention. y

In the drawings,

Fig.- 1 illustrates a sectional view of the heating apparatus embodying my improvements.

Fig. 2 is a detail sectional view of the same taken on line 2 2 of Fig. 1.

Fig. 3 is a fragmentary sectional detail of one of the heatabsorbing units, the section being taken on line 3-3 of Fig. 1.

Fig. 4 is a detail view of the hanger structure for the tube supporting plates.

Fig. 5 is a detail view of a modified form of combustion chamber.

Referring to the drawings, the heater 1ncludes two 'chambers designated 10 and 11 respectively. These chambers are formed of suitable brick-work 12 and at one side of chamber 10 there is provided a fuel burner 13. The flame from this burner passes across the bottom of the chamber 10 as is indicated by the arrows 14, and eventually the products of combustion emerge from chamber 10 through duct 15 into chamber 11. The arv plication I do not specically claim the structure shown in Fig. 5 as the same does not form a part of my present invention.

Heat absorbing devices Suitably disposed in chamber 11 are a plurallty of tubes 17. As shown in Fig. 1 these tubes are disposed in a plurality of rows both horizontally and vertically. These tubes, if deslred, may be provided with the usual and now well known corrugated heat absorbing elements 18. The various tubes 17 are interconnected by headers as indicated at 19 in Fig. 3 of the drawings. The medium to be heated preferably enters at an inlet header 20, passes downwardly through the tubes 17 finally emerging at outlet header 21. From this outlet header 21 a pipe 22 leads to an inlet header 23. From inlet header 23 the medium to be heated successively passes through tubes 24 which are disposed in the radiant heat chamber 10 adjacent the top` thereof so as to be out of the path of the hot gases. Tubes 24 also are preferably connected by the headers shown in dotted lines at 25 inFig. y1 and also in Fig. 2. These headers preferably but not necessarily are so arranged that the medium to be heated which may be oil passes serially through the tubes 24 `finally emerging at outlet header 26 (see Fi 2 Irnasimuch as tubes 24 and the radiant heat chamber 10 become very highly heated it is desirable that proper means be provided for supporting the tubes '24 so that expansion of these tubes will not disarrange them or cause the joints to be put under strain due to eX- cessive heat. For supporting these tubes 24 .tured to receive the tubes 24. In order to support the plates channel-like cross beams 28 and 29 are provided supported in any suitable manner upon the setting 12. These beams receive channel-like cross beams 30. For each plate 27 a pair of these channel-like beams 30 are provided disposed back to back as shown and slightly spaced to permit a hanger bolt 31 to extend downwardly between them. The lower end of each hanger bolt is connected in any desirable way'as by a fork and pin connection 32 to the plate 27.

Over and supportedA by the upper row of tubes 24 I provide tile members 33. These tile members rest upon the tops Iof the upper rows of tubes being arcuately notched for this purpose as shown in Fig, 1. Over the tile 33 there is preferably provided a layer of insulating material 34 and this'layer may be covered by a superimposed layer of brlckwork 35. This brick-work extends under the beams 30.

By means of the construction shown comparatively free expansion is permltted for the tubes 24 inasmuch as all parts are suspended from the beams 30 whieh 'extend across the top of the setting 12.

0n account ofthe highly intense radiant heat it is preferable that some protection be afforded for the lower edges of the plates 27 which -are subject to the most intense radiant heat. For this purpose I preferably locate the end plates 2 7 over the setting 12J and provide an intermediate brick-work pier 12a which extends upwardly under the edge of the intermediate plate 27 as shown in Fig. 2.

. What I claim is: p E

1. A heating apparatus comprising a radiant heat chamber, disposed substantially without the path of rapid iiow of hot gases,

a plurality of tubes therein in various superimposed horizontal rows, common, platelike members for supporting all of said tubes, means for supporting said members from above said chamber topermit expansion of the tube assembly, and means for protecting the lower edges of said members from the y effect of high intense radiant heat.

2. A heating apparatus comprising in combination, a setting having a radiant heat chamber therein, said chamber being disposed substantially without the path of rapid flow of hot gases, a plurality of tubes transversely disposed therein, a support for said tubes comprising plates apertured to receive the various tubes which are disposed side by side, and means for supporting said members from th said setting comprising transverse beam members and hanger supports depending therefrom and connected with said plates.

3. A heating apparatus comprising a setting having a radiant heat chamber therein, a plurality of tubes transversely disposed in said chamber, and disposed out of the path of rapid flow of the hot gases of combustion, a plurality of tile members supported upon the upper row of tubes and formlng the roof of said radiant heat chamber, and means for supporting said tubes and tile members from the side walls of said setting, said means comprising plates apertured to receive allof the tubes in said chamber and supporting tubes in each horizontal row, and supporting connections from said members to said beams for the purpose described.

5. A heating apparatus comprising a heating chamber which is substantially out of the path of rapid flow of hot gases having a plurality of tubes disposed in a plurality of superimposed rows and also with a plurality of said tubes side by side in a horizontal row,

said heating dhamber having side walls and cross beams supported thereby and means depending from said cross beams for supporting the said tubes, each of said tube support- .ing means havingmeans for conjointly supporting a plurality of different tubes disposed horizontally side by side ina horizontal row in said chamber.' v

6. A heating apparatus comprising a setting having a heat chamber therein, beams extending across the top of said setting,

-plates suspended from said beams forming parts of side Walls of said setting, said plates being apertured with a plurality of horizontal rows of apertures and a plurality of horizontal rows of tubes extending Within said chamber and passing through said apertures and supported by said plates.

7. A heating apparatus comprising a setting having a heat chamber therein, beamsV extending` across the top of. said setting, hangers 'carried by said beams, plates suspended from said hangers forming parts of side walls of said setting, said plates being apertured with a plurality of horlzontal rows` of apertures, a plurality of horizontal rows of tubes extending within said chamber and passing through said apertures and supported by said plates and connections between said tubes outside said plates.

8. A heating apparatus comprising a setting having a heat chamber therein, beams extending across the to of said setting, hangers carried by said eams, plates suspended from said hangers forming parts of side walls of said setting, said setting pro teoting the lower edges of said plates, said plates beingapertured with a plurality of horizontal rows of apertures, a plurality of horizontal rows of tubes extending within said chamber and passing through said apertures and supported by said plates and connections between said tubes outside said. plates. l

In testimony whereoflhereto aix my signature.

JOHN PRIMROSE.

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