US2132732A - Steam boiler - Google Patents

Description

I. GOLDBERG STEAM BOILER Filed Sept. 3, 1937 2 Sheets-Sheet 1 Oct. 11, 1938. I. GOLDBERG 2,132,732

STEAM BOILER I Filed Sept. 5. 1957 2 Sheets-Sheet 2 IN VENTOR BY Jami as (M I TLTORNEYC Patented Oct. 11, 1938 p 2,132,732

. pIsaac Goldberg, Los Angeles, Calif., 'ajssign'or to "j I Master Steam- Equipment Company, *Los-An geles, 'Califl, a corporationof California 7 Application September 3, 1937, Srial"No.; 162,266

. 1 Claim. (01. 122- 250) Many different types of water-tubularcoilboilsmallest of ;the group. The -number1of such coils ers have been designed but the dimeuuym most in the. group may be variedtosuit the size and of these designs has been the tendency to burn design-of the bqilen. It will be noted that the out the tubes, partly due'to poor water circulaend is of each -of thesecoils is brought out a tion, and partly due to the fact thatlitis nearly short distance from the periphery of the coil of if not quite impossible to readily clean the tubes which it ;is a part and tangent to its circular of mud and scale. form. These endsfrom" the upper portion of the The purpose of my invention is to provide a 'coilsextend in a horizontalplp e w il a type of I boiler that will be free from the above low metal header 20, the ends 2| exte d 10 defects, particularly in the provision for quick the lower end of the said coilsextendinahori 1 and thorough cleaning of the coils. A further zontal plane toward a similar header 26. All of purpose of my invention is to provide a system theseextended ends of the coilsare provided with of coils which can be quickly disconnected and couplings 22 so that the extended endssmay be replaced with a minimum of time and expense. sufficiently short as' to permit the coils to be My invention is specifically designed to be used assembled one within theother without the ends in boilers of comparatively small horse-power, interfering w t Su fl y- Connected t0 although there is no reason why large boilers each of the couplings 22 are nipples 23, having cannot be constructed employing the improveon their outer ends unions 24 and nipples 25, ments which my invention includes. extending from the said unions to the upper or 9, I illustrate my invention by means of the aclower header or 26 respectively, and connected 20 companying drawings in which: Figure l is a sidet e et by convenient means Such as being elevation of my device equipped with a single set screwed into the header. On the opposite side of coils, having the side wall of the casing reof the said headers and opposite to each of the moved and the coils shown in section. Figure 2 conduit connections from the coils is another is a plan view of the gas burners. Figure 3 is 3. opening, into each of which is secured the nipple side elevation of my device equipped with two 21 of sufficient length to extend through the wall sets of coils, also with the side wall removed. ID of the casing Where i is Closed by a p 8-- Figure 4 is a plan view of one of the coil sets or by other suitable removable means. The headand its header. Figure 5 is a front elevation of ers 2i! and 26 may be made' n e casting as 30 the header and coils. Similar numerals refer to shown if desired, or other suitable means of sup- 30 similar parts in the several views. porting and connecting the said headers may be The construction of my device is as follows: used. Means for the introduction of water into i0 is a casing enclosing the boiler proper and the boiler may consist of a suitable conduit 29 which can be provided withinsulated heat-resistfrom a source of water supply such as a pump.

ing walls if desired. The front may also be pro- This pump is not shown in the drawings, as any 35 vided with suitable doors through which access type of water feed may be used. The conduit 29 can be had to the interior. Near the base of the connects the source of water supply with the casing is a gas burner which may consist of the under side of the lower header 26 and is also conhollow metal gas distributor II which is supplied nected directly to the steam drum 30. If desired 40 with gas by means of suitable conduits l2 and a Water-level control may be used which is shown 40 having attached to its upper surface a plurality conventionally at 42, and which could be conof upright Bunsen burners l3. The burner shown nected to the water supply conduit 29 and to the and described is conventional only, and other Steam drum nd also DI'OVidBd with a float burners for gas or other fuel may be substitute-d and a Water gauge 32. AbOVe the Coils s a tea if desired without departing from the spirit of r m 3!! wh h i connected to the pp r i f 45 my invention. The flow of gas to these burners the header 20. The boiler is also provided with may be controlled by suitable thermostatic or the usual attachments such as steam gaug 33, a pressure automatic regulators if desired. I 4 the safety valve 34, a filling pipe 35,'a main disshows a means for attaching a pressure regulator. charge steam pipe 36 and a vent or stack 31 is Located above the said burners or their equivaprovided in the top of the casing. A blow-off 5 lent is a group of conduit coils nested with each cock is also provided. other, the largest in diameter l5 being the outer The duplex type shown in Figure 3 is very simcoil of the group and having within its circular ilar to the single coil type. In this type there are confines a similar coil 16, another still smaller in two groups of coils located back to back', each diameter l1 and an inner coil l8 which is the with its own upper and lower header. The 55 headers 38 of one group of coils are adjacent to the front wall of the casing Ill, and the headers 39 of the other group of coils are adjacent to the rear wall of the casing ID. The extended nipples 21 extending outwardly from the headers, pass through the front and back wall of the casing l and are provided with caps 28 or other suitable removable closure. In either type suitable supports are provided for locating and carrying the weight of the coils.

The principal purpose of my invention is to provide a water-tube boiler which will give a maximum life to the tubular coils and provide for the quick and convenient cleaning of the said coils thus preventing the scaling and mud burning of the coils. In order to clean the coils it is only necessary to unscrew the caps 28 and conmeet them with a source of water supply which may be chemically treated if desired;

It will be noted that the circulation of water in the boiler is through the conduit 29 from the pump to the lower header, through this header and into the coils by means of the nipples 25, the unions 24, the nipples 23 and the couplings 22. The water flows upwardly through the coils, reaching the upper header by means of the upper couplings 22, the nipples 23, the unions 24 and the nipples 25. From the upper header the steam and water flows upwardly into the steam drum 30. In the duplex type the flow of water is the same but flows through both coil groups simultaneously, into a common steam drum. The Water level in the drum is preferably as shown by the dotted line 3|.

It will be noted that a further improvement is attained by extending the pipes 45, connecting the headers with the steam drum 30, upwardly above the water level, while the pipes 43 and 44 from the water supply pipe 29 to the said drum end at a point below the water level in the said drum. The object of this arrangement is that when blowing off the boiler or washing out the steam drum, the mud and scale which has accumulated along the bottom of the drum will be washed out through the pipes 43 and 44 and not through the headers of coils. These pipes also add greatly to the rapid circulation of the ,water and steam in the boiler.

VWhat I claim as my invention and desire to secure by Letters Patent is: V

In a device of the class described, the combination of a case containing a group of spirallycoiled water-tubes, said coils being nested within one another and adapted to be heated by suitable heating means; a lower header connected to a source of water supply, said header also being connected to the lower ends of the said coils; an upper header connected to the upper ends of the said coils; a steam drum connected to the said upper header; means for detaching any one of ISAAC GOLDBERG.

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