US755988A - Vapor-generator. - Google Patents

Description

No. 755,988. I PATENTED MAR. 29, 1904.

' J. ANDREWSL VAPOR GENERATOR.

APPLICATION FILED JAN. 21, 1903. N0 MODEL.

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J. ANDREWS.

VAPOR GENERATOR.

APPLICATION FILED un. 21, 1903. no 101mm 3 sums-sum 2.

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PATEN TED MAR. 29,- 1904.

J. ANDREWS. VAPOR GENERATOR.

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Patented March UNITED STATES P TE T OFFICE.

J AMES-ANDREWS, OF OATHCART, SCOTLAND.

VAPOR-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 7 55,988, dated March 29, 1 904:. Appli ation fil d January 21,1903. Serial No. 139,953. (No niodel.)

T0 00% whom it may concern.-

Be it known that 1, JAMES ANDREWS, a subject of the King of GreatBritain, and a resident of Cathcart, Scotland, have invented a new and Improved Vapor-Generator, of which the following is a full, clear, and exact description.

This invention relates to a means by which the temperature of one fluid may be transmitted to another without bringing the fluids into actual contact. It is useful in many connections, as will be apparent to persons skilled in the art, among which connections may be stated the use of the invention as an evaporator, water-heater, or condenser.

The prime object of the invention is to eflect a thoroughly-rapid circulation of the fluid the temperature of which is to be transmitted, so that a greater amount of heat may be transmitted in a given time.

To this end the principal feature of the invention resides in providing a receptacle for one fluid and means in this receptacle furnishing a continuous or endless passage for the other fl uid, together with devices for causing a continuous movement of the fluid through said endless passage. 1

The invention also resides in various minor features, all of which will be fully brought out hereinafter.

This specification is an exact description of two forms of my invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a front elevation of one form of my invention, showing it adapted as an evaporator for sea-water. Fig. 2 is a sectional view on the line 2 2 of Fig. 1. Fig. 3 is a sec: tional view on the line 3 30f Fig. 2. Fig. 4 is a sectional view of the injector, which is utilized to enforce the movement of the circulating fluid. Fig. 5 is an elevational view, with parts in section, showing a tank and ballcock to regulate the overflow from the circulating-fluid passage, and Fig. 6 is a sectional view, of a second form of the injector.

Referring now to Figs. 1 to 4, 10 indicates the shell or receptacle in which the water to 'tion-passage.

be evaporated is placed. 11 indicates a suitable manhole and covering to permit access to the interior of the shell. 12 indicates a suitable safety-valve, 13 a pressure-gage, and 14 a valve-controlled passage for carrying 013? the vapor generated. 15 indicates the waterinlet valve, 16 the valve for drawing off the brine, and 17 the blow-off cock. 18 indicates a water-tube and connections for indicating the level of water within the shell. 19.and 20 indicate, respectively, an outer and inner coil of pipe, disposed vertically in the lower part of the shell 10 and connected with each other at their lower ends by a bend 22. From this bend passes a drain-pipe 23, running to the exterior of the casing and controlled by a cook 24:. The upper ends of the pipes, 19 and 20 are joined by suitable connections 21, respectively,

with the passages 25 and 26 of the injector 27, which has its base fastened to the shell. This injector, as best shown in Fig. 1, comprises the passages 25 and 26, of which the former is the injecting-passage and the latter the suc- 28 indicates the nozzle through which the steam or other fl-uid is introduced into the injector, this nozzle passing into the passage 25, as shown, and the passage 26 discharging into the passage 25 outward from the mouth of the nozzle 28.} With said nozzle 28 is connected the steam-supply pipe 29, as shown in Fig. 1. Now it will be seen that steam being introduced into the injector will create a fluid movement through the passage 25 into the outer pipe or coil 19 in the direction indicated by the arrow in Fig. 3. Simultaneously a sucking eflect will be indicated in the passage 26, and these movements jointly will enforce a circulation in the pipe 20 in the direction indicated bythe arrow in Fig. 3. The pipes 19 and 20, with their appurtenances, therefore form a continuous or endless fluidpassage, and the injector 27, working as described, will enforce a continuous fluid movement through this passage.

In the operation of the invention, assuming it to be used as a sea-water evaporator, the water is introduced intothe lower part of the shell to the desired height and the pipes 19 and 20 may be either filled with water or they may be allowed gradually to fill by the condcnsation of steam. In either case the steam is turned on from the pipe 29 and a fluid circulation is established and maintained in the pipes 19 and 20 and their connections. The excess fluid from the water of condensation may be drawn off from the cock 24 as occasion requires.

indicates a cylindrical partition, which is placed in the lower part of the shell and incloses the pipes 19 and 20, this partition enforcing a circulation of the water upward through the pipes and outward and downward between the sides of the shell and the said partition.

The construction shown in Fig. 5 illustrates a tank and ball-cock for automatically drawing off the excess fluid in the circulating-coils. 31 indicates this tank, and 32 indicates a ballcock and its connections, the same communicating with a suitable means for conducting off the overflow. 27 indicates the injector, and 19 and 20 indicate, respectively, pipe connections for leading the circulating fluid to and from the tank 31. By this arrangement the fluid moving through the coils 19 and 20 is forced to pass through the tank 31, and as the liquid in the coils increases from the condensation of the steam the level of the water in the tank 31 will rise, and the ballcock 32 should be adjusted to discharge all water rising above a certain level. In this manner the discharge of the water of condensation will be automatically efl ected.

Fig. 6 indicates an injector for facilitating the simultaneous use of steam under both high and low pressure. In this construction 25 indicates the injecting-passage, and 26 the suction-passage. 33 indicates the high-pressure nozzle, and 345 the low-pressure nozzle, the nozzle 33 being passed through the nozzle 34: and both nozzles being introduced into the injecting-passage 25. 35 indicates a steam connection for the high-pressure nozzle, and 36 indicates the steam connection for the lowpressure nozzle. 37 is a needle-valve controlling the high-pressure nozzle. By the application of a suitable valve to the connections 35 and 36 the nozzles may be used independently or simultaneously, as will be apparent.

Various changes in the form, proportions, and minor details of my invention may be resorted to at will without departing from the other end of the coils and having its injecting passage in communication with one of said coils and its suction-passage communicating with the other coil.

2. The combination of a fluid-receptacle, means constituting a continuous or endless passage in the said receptacle, means for enforcing a continuous fluid movement through said endless passage, and a partition inclosing the said means forming the endless passage, said partition being spaced from the sides of the receptacle, for the purpose specified.

3. The combination of a fluid-receptacle, means constituting a continuous or endless passage in the said receptacle, means for enforcing a continuous fluid movement through said endless passage, and means for automatically drawing off the excess fluid from the said endless passage.

4. The combination of a fluid-receptacle, means constituting a continuous or endless passage in the said receptacle, means for enforcing a continuous fluid movement through said endless passage, and means for automatically drawing off the excess fluid from the said endless passage, said means for automatically drawing olf the excess fluid comprising a tank communicating with the endless passage and a ball-cock commanding an outlet from said tank.

5. The combination with a shell or drum, of a coil of pipe therein, the ends of the coil passing to openings in the shell, and an injector having its base fastened to the shell with its injection and suction passages respectively in communication with said openings.

6. The combination of a shell, two coils arranged therein, said coils being in communication with each other at one end and having their other ends passed into communication with openings in the shell, and an injector having its base fastened to the shell and having J OHN W. MoFALL, R0131. THOMSON.

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