FIELD OF THE INVENTION
The invention relates to steam generation and to a device and system for generating high pressure steam.
BACKGROUND OF THE INVENTION
Water heaters have existed in many forms, such as boilers where water is heated by applying heat to the water container. In more advanced systems, such as the diathermal water heater in U.S. Pat. No. 5,506,391. In this system electrical oscillations are generated by an electrical controller, the oscillations being applied to a heater through which water flows while providing oscillations to heat the water.
Another heater system is described in U.S. Pat. No. 7,764,869. This system also provides electrical oscillations to the electrodes in a diathermal heating chamber. This system also requires the liquid to be heated to have a predetermined minimum concentration of dissolved solids which are replaced when the minimum concentration falls below a predetermined concentration.
SUMMARY OF THE INVENTION
The invention relates to a steam production apparatus and system to produce wet and dry steam for various purposes, including powering of steam turbines for generating electricity, driving machinery, and for providing heat for heating systems. The generated steam can be used for various other purposes.
The technical advance represented by the invention as well as the objects thereof will become apparent from the following description of a preferred embodiment of the invention when considered in conjunction with the accompanying drawings, and the novel features set forth in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows the external view of the steam generating apparatus.
FIG. 2, shows a cross-sectional view of the apparatus of FIG. 1, showing the internal structure of the apparatus.
FIG. 3 shows a different cross-sectional view of the apparatus of FIG. 2, showing the placement and configuration of the electrical conductive elements, and the insulated support between them.
FIG. 4 shows a plurality of steam generating units connected together to produce steam and supply it to one steam outlet.
DESCRIPTION OF A PREFERRED EMBODIMENT
FIG. 1 illustrates the steam generating device 10 of the present invention. Device 10 has an outer tubular structure 16 with an input opening 17 into which pressurized water in introduced into steam generating device 10. Input opening 17 may have a one way valve 9 to prevent the steam generated from flowing out the water input opening. There is a second opening 18 from which steam leaves the steam generating device 10. There is a changeable or adjustable nozzle 21 on second opening 18 which is a nozzle with an output opening 22 which is smaller than the channel 18a (FIG. 2) to limit the output of steam from the steam generating chamber. This causes an increase of the pressure of the output steam. There is a first electrical contact 19 and a second electrical contact 20 to which the electrical power is applied. There are two non-conductive ends 14 and 15 which, in combination with the outer structure 16 encloses and electrically isolates the internal electrical elements 11 and 12 shown in FIG. 2.
FIG. 2 is a cross-sectional view of the entire structure. There are two electrical terminals 19 and 20 which supply power to two electrical elements 11 and 12. Elements 11 and 12 are secured to an insulating structure 13, which electrically isolates elements 11 and 12 from each other and forms a tubular chamber 31 (FIG. 3) into which the water is introduced via inlet 17 to produce steam which exits through outlet 18 and nozzle 21 which has an output 22 which is smaller that the channel 18a(FIG. 2) to increase the output pressure. An outer enclosure 16 is positioned around internal chamber 31 (FIG. 3) formed by electrical conductive elements 11 and 12 and the insulating structure 13, which has two parts 13a and 13b (FIG. 3). Enclosure 16 is spaced apart from the internal chamber 31 by spacing 32 and held in position by end mounts 14 and 15 (FIG. 1) which hold the electrical elements apart, insulating them from each other. Each of the parts 14, 15 and 16 as well as inlet 17 and outlet 18 are heat resistant non conductive material. The electrical elements 11 and 12 are joined together, but electrically insulated from each other by insulating structure parts 13a and 13b and form the steam generating chamber. When the pressurized water enters the steam generating chamber 31 (FIG. 3), A current will flow from, for example, electrical element 11 through the water to electrical element 12. This current flow turns the water into steam. The amount of steam that flows out of the steam chamber 31 (FIG. 3) is limited by the reduced output opening 22 in nozzle 21 thus increasing the pressure in the chamber and of the output steam.
As shown in FIGS. 1 and 2, electrical power is applied to electrical terminals 19 and 20. As water flows into opening 17 it is converted into steam which flows out opening 18. Current flowing through the water from contact 11 to contact 12 heats the water and converts the water to steam. Several different voltages can be applied to terminals 19 and 20 and to elements 11 and 12 from approximate 110 volts A.C., to 880 volts A.C., but in testing the steam generated, 240 volts A.C. has been found sufficient to produce instant steam. In testing, wet and dry steam was produced and began to flow out of opening 18 to nozzle 21 within about 15 seconds after power was connected to terminals 19 and 20. During testing, a steam pressure of about 750 psi was produced. This can depend upon the voltage used, the flow rate of water, the temperature of the water, the amount of impurities in the water and the size of the output nozzle. Water with impurities is more conductive than pure water. Once the steam is produced, the amount of current flowing will drop as steam is less conductive than water. This means that the current drawn from the power source will decrease after the steam is produced, lowering the power requirement to maintain steam production and flow.
FIG. 3 is a cross sectional view 3-3 of FIG. 2. Shown is the outer structure 16 enclosing the tubular steam generating structure made of electrical elements 11 and 12 which are insulated from each other by the insulators 13a and 13b. Electrical elements and 12, joined to insulators 13a and 13b, form a tubular structure, and chamber 31, in which the steam is formed. The end mounts 14 and 15 (illustrated in FIG. 2) hold the outer structure 16, and tubular structure comprised of elements 11, 12, 13a and 13b together and provided the opening 17 into which water is introduced and opening 18 from which steam exits. As the current flows between electrical elements 11 and 12, and through the introduced water, the heating of the water by the current flowing through produces steam.
The present invention does not require an electronic controller as required in the prior art. Steam is simply generated by passing electrical current through water between electrical elements 11 and 12.
FIG. 4 illustrates a multi-unit system 40 for generating steam. There are four steam generating units 41, 42, 43 and 44. Each of the units is the same unit illustrated in FIGS. 1 and 2. They are connected to consecutively generate steam in series. Each of the steam output openings 45a, 45b, 45c and 45d are connected to steam line 45. Steam then exits out opening 46, which may be a nozzle. The electrical terminals 19a, 19b, 19c, and 19d and 20a, 20b, 20c and 20d are connected in parallel by electrical terminal input lines 50, and 51. Control units 55, 57 and 59 are for determining when water flows into steam generating units 42, 43 and 44.
Operation of multi-unit system is as follows. Electrical power is connected to each of the units, 41, 42, 43 and 44. Water flows only into unit 41 through input 61. Steam will only be produced in unit 41. For example, with a power input of 240 volts A.C., the current flow can be initially about 40-60 amps. As steam is produced, the current could fall to as low as about 15 amps. This is possible as steam is not as conductive as water. By introducing water into the steam units 41-44 one at a time, the amount of current required is limited. When all units are producing steam the current required at any one time should be limited to about 40-60 amps. With each unit drawing approximately only about 15-20 amps, the total required could be limited to about 60-80 amps total. If units 41-44 were all supplied with water at the same time, the current could rise to about 200 amps. By sequentially introducing water in the four units, the current could be limited, thereby limiting the power required to produce steam. Since current in each unit should drop to about 15-20 amps in about 15 seconds, the multi-unit systems should be producing steam in all units in 60 seconds or less. Units 55, 57, and 59 are timers set to open the connected water valves after a set time. Since the current in each steam unit 41-44 should reduce after about 15 to 20 seconds of introducing water into the steam unit, the timers 55, 57, and 59 can be set to open the water valves after the set time. Timer 55 would open valve 56 after approximately 15 to 20 seconds allowing water to flow through input 62 into steam unit 42, timer 57 would open water valve 58 after approximately 30-40 seconds allowing water to flow through input 63 into steam unit 43, and timer 59 would open water valve 60 approximately 45 to 60 seconds after allowing water to flow through valve 60 and through input 64 to steam unit 44. These times are after water is initially supplied to water input 70.
Patent Application
20170030577
