US1739401A - Hioh or low pressure plash boiler - Google Patents

Description

Dec. 10, 1929. E. J. LAMP ORT 1,739,401

HIGH OR LOW PRESSURE FLASH BOILER Filed Jan. 27, 1927 2 Sheets-Sheet 1 w s *B v 0 a 9 9 I "I xl 'i VENToR WITNESSES I Z a'm or, i BY Dec. 10, 1929.

. J. LAMPORT HIGH 0R LOW PRESSURE FLASH BOILER Filed Jan. 2 1927 2 Sheets-Shet 2 WITNESS;

' I ATTORNEYS Patented Dec. 10, 1929 UNITED STATES EDWARD J. LAMPOR'I, OF CHICAGO, ILLINOIS HIGH on LOW PRESSURE FLASH BOILER Application filed January 27, 1927. Serial No. 164,086.

This invention relates to high and low pressure flash boilers, and is more particularl adapted to be employed in connection wit my oil burner described and claimed in my co-pending application, Serial No. 77,301, filed Dec. 23', 1925.

'An object of the invention is the provision of a device for generating steam in which a plurality of jets of water are sprayed into a restricted space, the walls of which are highly heated.

" Another obj ect of the invention is the provision of a device for generating steam in which a plurality of concentric metal shells provide for a plurality of restricted annular spaces into which are sprayed fine jets of water for immediate vaporization of the water, the vapors or steam which are created in the spaces being superheated in the space as they are conducted to the usual steam dome. I

A further object of the invention is the provision of a device for generating steam and more particularly superheated steam and in which the steam is generated preferably along the lowermost points of concentric generating chambers embracing a fire-box located centrally of the chamber and in which an improved type of oil burner produces an intense flame for the immediate generation of steam. a

This invention will be best understood from a consideration of the following de tailed description, in view of the accompanying drawings forming a part of the specification; nevertheless, it is to be understood that the invention is not confined to the disclosure, being susceptible of suchchang es and modifications which shall define no material departure from the salient features of the invention as expressedin the appended claims.

In the drawings: a Figure 1 is a view inperspective of the high and low-pressure'flash boiler constructed in accordance with the principles of my invention, I

Fig ure'2'i s a vertical longitudinal of my boiler, I

Figure 3 is a transverse vertical section taken along the line 3-3 of Fig. 2, v

section Figure 4 is a fragmentary vertical section taken along the line 4:4 of Figure 2, I

Figure 5 is a transverse-vertical section of the spray pipe showing the jet-forming de vices, and

Figure 6 is a fragmentary view in perspec- 'tive of the interior of the boiler.

the front wall 17. The boiler is adapted to be mounted in a wall 20 having a base member 21 upon which the boiler rests. The inner face-of the base member and side walls are curved to neatly seat said boiler.

The boiler consists of an outer shell 25 formed of suitable metal to which is secured I at the open front end thereof the wall 17 by means of flanges 26 which are riveted to the; ends of the boiler as shown. A second shell 27 istelescoped within the shell 25 and spaced from the said shell to provide, an annular steam generating chamber 28. Resting upon the inner bottom face of the shell-27 is a tion with the header 30 at the opposite side walls of the header, as shown at 39 and 40.

The header 30 is connected. with the upper end of the steam generating chamber 28 by chamber is'in turn connected with the steam lUUr dome 12 by means of longitudinal pipes 42 and threaded nipples 43.

Each of the headers are formed of two longitudinal cup-shaped members 44 which are provided with flanges at their outer ends and riveted or bolted together, as shown at 45. A perforated pipe 46 extends longitudinally of the header 29 adj acent its upper end and in alignment with the openings which place the hollow ribs 32 in communication with the header. This pipe has diametrically disposed nozzles 47 which are aligned with the lower open ends of the ribs 32. These nozzles are threaded into passages 48 in theside walls of the pipes 46. The outer ends or the nozzles are provided with a polygonally shaped recess 49 which is adapted to be engaged by some suitable tool for turning the nozzles for removing or replacing said nozzles. The renovable nozzles provide for the substitution of other nozzles having varying diameters so that a larger orsmal ler spray of water is produced.

A second pipe 50 located at the lower end the header 29 and extending lon udinally thereof is connected with a header 51. with which the pipe 46 is connected and a pipe 52 connects the header 51 with a source of supply which will be presently explained.

The pipe 50 is also provided with diametrically disposed nozzles with the nozzles aligning with the. ports 36 in the hollow ribs 3;.

A pipe 53 is connected withthe lower end of a header 51- and extends longitudinally of the boiler and between the outer and in ner shells 25 and 27 and at the lower end of the space 3. This pipe is likewise provided with a plurality oi spaced nozzles 54 Wl1lCl1 are adapted to spray water in a line mist into the space 28 whereby the water is instantaneously generated into steam.

The water supplied to the header 51 and to the pipes 46, 50 and is drawn from a tank 55 through a pipe 56 connected with the suction end of a pump of the rotary type which is driven from a shaft 58'connected with a motor 59. The motor is-connecte'd with. the. usual house current and controlled Lay a switch or rheostat 60. A discharge pipe 61 isprovided t. h a a manually controlled valve 63. Thispipe is connected with pipe 52 in which an automatic check valve 64 isplaced. A return pipe 65 connects pipe 61. with the tank 55. and a, pressure regulator shown. at 66 is adapted to automatically. permit the return of the water through pipe 65 to the tank 55 at a predee'rniin edipressure. A regulator 67 connectcd with the pump 57' is adapted to maintain a uniform pressure. The pipe 53 is provided with a valve 68 controlling the supply of water to thiepip'e and likewiseto'the nozfiles 54. V

The pump 57 is carried by a standard 69 formed integrally with a base member 70. The motor 59 is supported by a standard 71 likewise secured to or formed integrally with said base member. This base member is mounted on a table 72 located in any convenient position adjacent the front end of the boiler 10.

A steam dome is in communication with the discharge pipe 73 which is connected to a pressure gage 74 by means of a pipe 75. The discharge pipe is conducted to a point or" advantage for the distribution or use of the steam.

The oil burner 16 forms no part of the present invention and its connections with the furnace and with the source of supply of water and oil will be briefly described. This burner forms the subject-matter of my co-pending application, Serial No. 77,301.

The motor drives a pump 81 for iorcing oil through pipe 82 and pipe 83 to a vaporizing chamber in the burner 16. lVatcr is forced by the-pump 84 driven by the motor 80 through a pipe 85 which is extended inwardly into the firebox and connected with a superheater (not shown). The superheated steam is conducted through the pipe 86 to the interior of the burner 16 whereby a mixture of superheated steam and vaporized oil are combined which is burned in the fur nace. In this case no air is admitted to the: firebox since the combustion is maintained entirely by the superheated steam. A pressure gage 87 is in communication with the pipe connected to pipe 85 and a check valve 89 is incorpo ated in the pipe 85 betwcen the pressure 87 and the wall 17' of the furnace.

The operation of my device is as follows: l Vater is pumped into the pipe 52 at a pre' determined pressure so that the water will. be forced through the restricted nczzdcs in the pipes 46, 50 and 53 in a fine mist so that when they come in contact with the highly heated surfaces of the ribs 31 and 32 and the inner wall of the shed 27 the line mist will be instantly vaporized. This vapor must pass upwardly and upon opposite sides of the boiler through the curved chamber 23 which has a very restricted widthso that the steam generated in this chamber will fill said chamber upon opposite sides or the headers 29 and 3.0 in the form of a thin sheet so that the opposite sidesor rather the opposite faces will be in contact-with the surface of the shell 27. Due to the fact that the width or thickness of the chamber 28 is very limited the steam will be highlyheated. Furthermore.

the firebox is located within the shell 27 so.

that the heat is directly applied to said shell which is taken up by the steam. The chambers in the hollow ribs 31 and 32 are likewise restricted in width so that the steam created in the header 29 must travel through a very narrow path before it reaches the header 30, the intense heat created in the firebox being applied directly to the hollow ribs.

The ends of the hollow ribs 31 and 32 are welded to a section 44 of either of the headers "39 or 30 after which the flanged ends of the headers are secured to ether by means of rivets or bolts before application to the boiler.

I claim 1. A boiler comprising a pair of spaced :roncentric shells and providing a restricted annular chamber between the shells, aperforated pipe located in the chamber, means for forcing water under pressure through the pipe whereby the water is forced into the chamber in a fine mist, the inner shell providing a heating chamber centrally of the boiler, headers located in the inner shell, hollow ribs connecting the headers and means for spraying Water into one of the headers.

2. A boiler comprising a pair of concentric shellsand means for closing the space at the opposite ends of the shells and co-operating with the shells to provide an annular chamber restricted in width, a header within the inner shell and in communication with the annular space at the upper portion thereof,

a second header located within the inner shell and adjacent the bottom thereof, hollow ribs in the inner shell and having the opposite ends hereof in communication with the upper and lower headers, pipes being perforated to pro vide nozzles located within the lower header for spraying water in a fine mist into the ribs, meansfor forcing water into the pipes, a perorated pipe located within the annular space between the inner and outer shell and connected with the source of water whereby water is sprayed in a fine mist into the annular space, means for heating the interior of he inner shell, and means for conducting steam from the ribs and annular space.

.3. A flash boiler comprising spaced concentric shells, means connected with the opposite ends of the shells to provide an annuar chamber of restricted width between said shells, said shells being substantially horizontallydisposed, a perforated pipe Connected with a source of water under pressure located longitudinally within the annular chamber, leaders located within the inner shell and at diametrically opposite points and upon opposite sides of the longitudinal axis of the inner-shell, perforated pipes connected with a source of water under pressure and located in one of the headers, hollow ribs connecting the headers, and a firebox included within the inner shell. I

41A flash boiler comprising spaced concentric shells, means connected with the opposite ends of the shells to provide an an} nularchamber of restricted width between said": shells, said shells being substantially horizontally disposed, a perforated pipe conuected with a source of water under pressure located longitudinally within the annular chamber, headers located within the inner shell and at diametrically opposite points and upon opposite sides of the longitudinal axis of the inner shell, perforated pipes connected with a source of water under pressure and located in one of the headers, curved hollow ribs connecting the headers, and a firebox included within the inner shell, alternate ribs being staggered relative to the outer ribs and being curved on a greater are of a circle than the remaining ribs.

5. A boiler comprising a pair of spaced concentric shells and providing a restricted annular chamber between the shells, a perforated pipe located in the chamber, means for forcing water under pressure through the pipe whereby the water is forced into the chamber in a fine mist, the inner shell providing a heater chamber centrally of the boiler, headers located in the inner shell, hollow ribs connecting the headers, and means for spraying water into one of the headers, alternate ribs being staggered relative to the other ribs.

EDWARD J. LAMPORT.

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