US20100031899A1 - Water heater - Google Patents
Water heater Download PDFInfo
- Publication number
- US20100031899A1 US20100031899A1 US12/189,332 US18933208A US2010031899A1 US 20100031899 A1 US20100031899 A1 US 20100031899A1 US 18933208 A US18933208 A US 18933208A US 2010031899 A1 US2010031899 A1 US 2010031899A1
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- United States
- Prior art keywords
- tank
- inner tank
- outer tank
- water
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/185—Water-storage heaters using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
Definitions
- the present invention relates generally to an apparatus for providing heated water ready for delivery. More particularly, this invention is directed to an apparatus or device for heating water for immediate delivery as well as maintaining a start up heat.
- hot water tanks which have inner and outer tanks for heating water.
- the device according to the present invention provides an apparatus or device for quickly providing a stream of hot water, ready for delivery. More particularly, this invention is directed to an apparatus or device for heating water for immediate delivery as well as maintaining a start up heat.
- the device includes an inner tank, an outer tank, heat bands disposed on the outside of the outer tank, an interior coil supplying water to the inner tank, and a heating element for heating water in the inner tank.
- the inner tank and outer tank are concentrically arranged with a labyrinthine passage in between, so that water spends an additional amount of time flowing in the passage while it is being heated by the heat supplied from the band heaters.
- water enters the unit through an inlet and travels through a coil that is suspended on the inside of the inner tank. Water then exits the coil and enters the outer tank, and then travels through a water channel that is formed with spacers placed between the outside of the inner tank and the inside of the outer tank. Water leaves the outer tank heated to the desired temperature.
- a heating element in the inner tank heats the water inside the inner tank.
- the water inside the inner tank heats the water passing through the coil so as to keep the entire unit at a desired operating temperature, and is also a partial source of the hot water supply.
- Fresh water constantly passes through the inner tank when in use.
- the band heaters are controlled separately. The demand determines how many of the individual band heaters work at any given time during use.
- Hot water is stored in the inner tank, the coil, the outer tank, and the water channel. When a small amount of hot water is needed, hot water is supplied from those areas. When the temperature cools, the band heaters are activated and water is heated as needed.
- the flow of water passing through the inner tank is limited so that the heating element is not overwhelmed, and therefore can remain a heat source for the unit.
- Metal strips form the water channel, and also act as a heat exchanger between the inner and outer tanks.
- a thermal jacket is placed on the outside of the unit to minimize heat loss and maximize the efficiency of the band heaters. After the band heaters are activated, the unit will produce as much hot water as desired with zero recovery time.
- FIG. 1 is a schematic side view of a water heater apparatus for quickly providing heated water, according to the present invention.
- FIG. 2 is a schematic side view of the outside of the inner tank showing a labyrinthine passage former thereon, and usable in the apparatus of FIG. 1 .
- FIG. 3 is a schematic side elevational view of the outside of the outer tank having band heaters disposed therearound, and usable in the apparatus of FIG. 1 .
- FIG. 4A is an elevational view of a top plate for the inner tank, usable in the apparatus of FIG. 1 .
- FIG. 4B is an elevational view of a bottom plate for the inner tank, usable in the apparatus of FIG. 1 .
- FIG. 5A is a schematic cutaway view of the top plate assembly, usable in the apparatus of FIG. 1 .
- FIG. 5B is a schematic cutaway view of the bottom plate assembly, usable in the apparatus of FIG. 1 .
- FIG. 6A is an elevational view of the top plate for the outer tank, usable in the apparatus of FIG. 1 .
- FIG. 6B is an elevational view of the bottom plate for the outer tank, usable in the apparatus of FIG. 1 .
- FIG. 7 is an assembly view of another embodiment of the apparatus of FIG. 1 , wherein a spiral separator separates the inner shell and the outer shell.
- FIG. 8 is a perspective view of the inner tank of FIG. 7 .
- FIG. 9 is a side elevational view of the inner tank of FIG. 7 .
- FIG. 1 is a schematic side view of a water heater apparatus 100 for quickly providing heated water.
- the water heater apparatus 100 has an inner tank 140 , an outer tank 120 , and a plurality of heat bands 260 disposed on the outside of the outer tank 120 .
- the walls of the inner tank 140 and outer tank 120 are broken away to reveal internal structures.
- the water heater apparatus 100 includes an interior coil 160 supplying water to the inner tank 140 , and a heating element 220 for heating water in the inner tank 140 .
- the inner tank 140 and the outer tank 120 are concentrically arranged with a labyrinthine passage 740 (shown in FIG. 2 ) in between, so that water spends an additional amount of time flowing in the passage 740 while it is being heated by the heat supplied from the band heaters 260 .
- a pop off valve 320 is schematically shown passing through the uppermost wall of the outer tank 120 .
- the inner coil 160 has an inlet 200 and an outlet 300 which communicates with the interior of the outer tank 120 .
- the interior coil 160 has a small opening 180 which supplies fresh water from the interior coil 160 to the interior of the inner tank 140 .
- Another small opening 280 is disposed in the uppermost wall of the inner tank 140 , allowing water flow out of the inner tank 140 .
- the interior coil 160 does not otherwise communicate with the interior of the inner tank 140 .
- a heating element 220 extends into the interior of the inner tank 140 for heating water within the inner tank 140 . Power lines and control circuitry for the heating element 220 are not shown, as such elements are conventional and would be understood by anyone having skill in the water heating element art.
- An outlet 240 supplies heated water from the interior of the outer tank 120 to a house or other location.
- the water heater apparatus 100 is relatively small and extends only about 11 or 12 inches in diameter and about 18 inches in length, and the openings 180 and 280 are about one-eighth inch in diameter.
- the specific dimensions can be varied within the scope of the present invention, and all such variations are contemplated as being within the scope of the present invention.
- water enters the unit through an inlet and travels through a coil that is suspended on the inside of the inner tank. Water then exits the coil and enters the outer tank, and then travels through a water channel that is formed with spacers placed between the outside of the inner tank and the inside of the outer tank. Water leaves the outer tank heated to the desired temperature.
- a heating element in the inner tank heats the water inside the inner tank.
- the water inside the inner tank heats the water passing through the coil so as to keep the entire unit at a desired operating temperature, and is also a partial source of the hot water supply.
- Fresh water constantly passes through the inner tank when in use.
- the band heaters are controlled separately. The demand determines how many of the individual band heaters work at any given time during use.
- Hot water is stored in the inner tank, the coil, the outer tank, and the water channel. When a small amount of hot water is needed, hot water is supplied from those areas. When the temperature cools, the band heaters are activated and water is heated as needed.
- the flow of water passing through the inner tank is limited so that the heating element is not overwhelmed, and therefore can remain a heat source for the unit.
- Metal strips form the water channel, and also act as a heat exchanger between the inner and outer tanks.
- a thermal jacket is placed on the outside of the unit to minimize heat loss and maximize the efficiency of the band heaters. After the band heaters are activated, the unit will produce as much hot water as desired with zero recovery time.
- FIG. 2 is a schematic side view of the outside of the inner tank 140 showing a plurality of spacers 340 forming a labyrinthine passage 740 on the inner tank 140 .
- the spacers are preferably composed of metal, such as metal wire or metal strips.
- the intended direction of fluid flow is indicated by the arrows along the labyrinthine passage 740 in FIG. 2 .
- FIG. 3 is a schematic side elevational view of the outside of the outer tank 120 , having a plurality of band heaters 360 concentrically disposed therearound. The upper portion of the outer tank 120 is broken away in this view.
- the band heaters 360 are selectively actuated to generate heat, and transfer the heat to the outer tank 120 when actuated.
- Power wires 720 are shown as being schematically connected to the respective ones of the band heaters 360 , and any type of known control can be used for controlling power to each of the band heaters 360 .
- an ordinary thermostat can be used to turn all the heaters on or off, while a proportional controller can be used to selectively actuate fewer ones of the band heaters 360 when only a little additional heat is needed, and more of the band heaters 360 when a condition exists requiring substantially more heating.
- FIG. 4A is an elevational view of a top plate 380 for the inner tank 140 (shown in dashed outline in this view).
- the top plate 380 has an outlet 300 for allowing passage of liquid from the inner tank 140 to the outer tank 120 .
- the bore 280 is approximately one-eighth inch in diameter; however, other diameters smaller than that of the outlet 300 can be used for the bore 280 without departing from the scope of the present invention.
- the top plate 380 has a notch 460 along one edge thereof, to create an inlet to the water channel.
- FIG. 4B is an elevational view of a bottom plate 400 for the inner tank 140 (shown in dashed outline in this view).
- the bottom plate 400 has a central bore or aperture 760 which receives the heating element 220 (shown in FIG. 1 ) and a bore 780 which receives the inlet 200 (shown in section in this view).
- the bottom plate 400 has a notch 480 along one edge thereof, to create an outlet to the water channel.
- the water channel may be part of the labyrinthine passageway 740 .
- FIG. 5A is a schematic cutaway view of the top plate assembly, showing the top plate 420 for the outer tank 120 disposed above the top plate 380 for the inner tank 140 .
- a pop off valve 320 is shown passing through the bore 300 of the top plate 420 .
- FIG. 5A additionally shows a spacer element 340 disposed between the walls of the inner tank 140 and the outer tank 120 .
- FIG. 5B is a schematic cutaway view of the bottom plate assembly, showing the bottom plate 400 for the inner tank 140 disposed above the bottom plate 440 for the outer tank 120 .
- a spacer 340 is schematically shown between the walls of the inner tank 140 and the outer tank 120 .
- the bottom plate 440 is shown having the inlet 200 and also showing an opening which communicates with an outlet 240 to a house or other destination.
- the heating element 220 is shown schematically and partially broken away, the heating element 220 passing through a bore 760 in the bottom plate 440 for the outer tank 120 and through a bore 800 in the bottom plate 400 for the inner tank 140 .
- FIG. 6A is an elevational view of the top plate 420 for the outer tank 120 , as also shown in FIG. 5A .
- the pop off valve 320 is shown schematically in top elevation in this figure.
- FIG. 6B is an elevational view of the bottom plate 440 for the outer tank 120 , as also shown in FIG. 5B .
- the inlet 200 and the outlet 240 are also shown in this view.
- the heating element 220 is shown schematically in bottom elevation in this view.
- FIG. 7 is an assembly view of an apparatus 500 , which is another embodiment of the apparatus of FIG. 1 , wherein a spiral separator 620 separates an inner shell 600 and an outer shell 520 .
- the parts are similar to those of the previous figures, and work in the same way, and include: the outer shell 520 , end plates 540 and 560 , the inner shell 600 , and end plates 640 and 660 .
- the bottom plate 660 differs somewhat from the previous embodiment, in that a heater element fitting 680 is arranged to one side of the center, as is a pressure release valve fitting 720 , and an inlet 700 is close to the center.
- FIG. 8 is a perspective view of the inner tank 600 of FIG. 7 .
- the separator 620 is seen clearly forming a helical path along the outside of the inner tank 600 .
- FIG. 9 is a side elevational view of the inner tank 600 of FIGS. 7 and 8 , also showing the separator 620 .
- the separator can be formed of metal wire or plate.
Abstract
A water heater apparatus includes an inner tank, an outer tank, heat bands disposed on the outside of the outer tank, an interior coil supplying water to the inner tank, and a heating element for heating water in the inner tank. The inner tank and outer tank are concentrically arranged with a labyrinthine passage in between, so that water spends an additional amount of time flowing in the passage while it is being heated by the heat supplied from the band heaters. The water heater apparatus can thereby provide heated water ready for delivery, as well as maintaining a start up heat.
Description
- Not applicable.
- Not applicable.
- The present invention relates generally to an apparatus for providing heated water ready for delivery. More particularly, this invention is directed to an apparatus or device for heating water for immediate delivery as well as maintaining a start up heat.
- As noted in U.S. Pat. No. 4,242,569 to Kayser, hot water tanks are known which have inner and outer tanks for heating water.
- In U.S. Pat. No. 4,860,728 to Nelson, a water heater is shown which includes an inner tank surrounded by an outer shell.
- U.S. Pat. No. 5,006,689 to Kurachi et al. teaches inner and outer tanks along with a vacuum heat insulation layer and electrically heated bubble pump unit.
- There is a need for an apparatus or device for quickly providing a stream of hot water, ready for delivery. Further, there is a need for an apparatus or device for heating water for immediate delivery as well as maintaining a start up heat.
- From the foregoing, it is seen that it is a problem in the art to provide a device meeting the above requirements. According to the present invention, a device is provided which meets the aforementioned requirements and needs in the prior art. Specifically, the device according to the present invention provides an apparatus or device for quickly providing a stream of hot water, ready for delivery. More particularly, this invention is directed to an apparatus or device for heating water for immediate delivery as well as maintaining a start up heat.
- The device according to the present invention includes an inner tank, an outer tank, heat bands disposed on the outside of the outer tank, an interior coil supplying water to the inner tank, and a heating element for heating water in the inner tank. The inner tank and outer tank are concentrically arranged with a labyrinthine passage in between, so that water spends an additional amount of time flowing in the passage while it is being heated by the heat supplied from the band heaters.
- In use, water enters the unit through an inlet and travels through a coil that is suspended on the inside of the inner tank. Water then exits the coil and enters the outer tank, and then travels through a water channel that is formed with spacers placed between the outside of the inner tank and the inside of the outer tank. Water leaves the outer tank heated to the desired temperature.
- A heating element in the inner tank heats the water inside the inner tank. The water inside the inner tank heats the water passing through the coil so as to keep the entire unit at a desired operating temperature, and is also a partial source of the hot water supply. Fresh water constantly passes through the inner tank when in use. The band heaters are controlled separately. The demand determines how many of the individual band heaters work at any given time during use.
- Hot water is stored in the inner tank, the coil, the outer tank, and the water channel. When a small amount of hot water is needed, hot water is supplied from those areas. When the temperature cools, the band heaters are activated and water is heated as needed.
- The flow of water passing through the inner tank is limited so that the heating element is not overwhelmed, and therefore can remain a heat source for the unit.
- Metal strips form the water channel, and also act as a heat exchanger between the inner and outer tanks. A thermal jacket is placed on the outside of the unit to minimize heat loss and maximize the efficiency of the band heaters. After the band heaters are activated, the unit will produce as much hot water as desired with zero recovery time.
- Other objects and advantages of the present invention will be more readily apparent from the following detailed description when read in conjunction with the accompanying drawings.
-
FIG. 1 is a schematic side view of a water heater apparatus for quickly providing heated water, according to the present invention. -
FIG. 2 is a schematic side view of the outside of the inner tank showing a labyrinthine passage former thereon, and usable in the apparatus ofFIG. 1 . -
FIG. 3 is a schematic side elevational view of the outside of the outer tank having band heaters disposed therearound, and usable in the apparatus ofFIG. 1 . -
FIG. 4A is an elevational view of a top plate for the inner tank, usable in the apparatus ofFIG. 1 . -
FIG. 4B is an elevational view of a bottom plate for the inner tank, usable in the apparatus ofFIG. 1 . -
FIG. 5A is a schematic cutaway view of the top plate assembly, usable in the apparatus ofFIG. 1 . -
FIG. 5B is a schematic cutaway view of the bottom plate assembly, usable in the apparatus ofFIG. 1 . -
FIG. 6A is an elevational view of the top plate for the outer tank, usable in the apparatus ofFIG. 1 . -
FIG. 6B is an elevational view of the bottom plate for the outer tank, usable in the apparatus ofFIG. 1 . -
FIG. 7 is an assembly view of another embodiment of the apparatus ofFIG. 1 , wherein a spiral separator separates the inner shell and the outer shell. -
FIG. 8 is a perspective view of the inner tank ofFIG. 7 . -
FIG. 9 is a side elevational view of the inner tank ofFIG. 7 . -
FIG. 1 is a schematic side view of awater heater apparatus 100 for quickly providing heated water. Thewater heater apparatus 100 has aninner tank 140, anouter tank 120, and a plurality ofheat bands 260 disposed on the outside of theouter tank 120. The walls of theinner tank 140 andouter tank 120 are broken away to reveal internal structures. - In
FIG. 1 , thewater heater apparatus 100 includes aninterior coil 160 supplying water to theinner tank 140, and aheating element 220 for heating water in theinner tank 140. Theinner tank 140 and theouter tank 120 are concentrically arranged with a labyrinthine passage 740 (shown inFIG. 2 ) in between, so that water spends an additional amount of time flowing in thepassage 740 while it is being heated by the heat supplied from theband heaters 260. - In
FIG. 1 , a pop offvalve 320 is schematically shown passing through the uppermost wall of theouter tank 120. Theinner coil 160 has aninlet 200 and anoutlet 300 which communicates with the interior of theouter tank 120. Theinterior coil 160 has asmall opening 180 which supplies fresh water from theinterior coil 160 to the interior of theinner tank 140. Anothersmall opening 280 is disposed in the uppermost wall of theinner tank 140, allowing water flow out of theinner tank 140. Theinterior coil 160 does not otherwise communicate with the interior of theinner tank 140. Aheating element 220 extends into the interior of theinner tank 140 for heating water within theinner tank 140. Power lines and control circuitry for theheating element 220 are not shown, as such elements are conventional and would be understood by anyone having skill in the water heating element art. Anoutlet 240 supplies heated water from the interior of theouter tank 120 to a house or other location. - In a preferred embodiment, the
water heater apparatus 100 is relatively small and extends only about 11 or 12 inches in diameter and about 18 inches in length, and theopenings - In use, water enters the unit through an inlet and travels through a coil that is suspended on the inside of the inner tank. Water then exits the coil and enters the outer tank, and then travels through a water channel that is formed with spacers placed between the outside of the inner tank and the inside of the outer tank. Water leaves the outer tank heated to the desired temperature.
- A heating element in the inner tank heats the water inside the inner tank. The water inside the inner tank heats the water passing through the coil so as to keep the entire unit at a desired operating temperature, and is also a partial source of the hot water supply. Fresh water constantly passes through the inner tank when in use. The band heaters are controlled separately. The demand determines how many of the individual band heaters work at any given time during use.
- Hot water is stored in the inner tank, the coil, the outer tank, and the water channel. When a small amount of hot water is needed, hot water is supplied from those areas. When the temperature cools, the band heaters are activated and water is heated as needed.
- The flow of water passing through the inner tank is limited so that the heating element is not overwhelmed, and therefore can remain a heat source for the unit.
- Metal strips form the water channel, and also act as a heat exchanger between the inner and outer tanks. A thermal jacket is placed on the outside of the unit to minimize heat loss and maximize the efficiency of the band heaters. After the band heaters are activated, the unit will produce as much hot water as desired with zero recovery time.
-
FIG. 2 is a schematic side view of the outside of theinner tank 140 showing a plurality ofspacers 340 forming alabyrinthine passage 740 on theinner tank 140. The spacers are preferably composed of metal, such as metal wire or metal strips. The intended direction of fluid flow is indicated by the arrows along thelabyrinthine passage 740 inFIG. 2 . -
FIG. 3 is a schematic side elevational view of the outside of theouter tank 120, having a plurality ofband heaters 360 concentrically disposed therearound. The upper portion of theouter tank 120 is broken away in this view. Theband heaters 360 are selectively actuated to generate heat, and transfer the heat to theouter tank 120 whenactuated. Power wires 720 are shown as being schematically connected to the respective ones of theband heaters 360, and any type of known control can be used for controlling power to each of theband heaters 360. For example, an ordinary thermostat can be used to turn all the heaters on or off, while a proportional controller can be used to selectively actuate fewer ones of theband heaters 360 when only a little additional heat is needed, and more of theband heaters 360 when a condition exists requiring substantially more heating. -
FIG. 4A is an elevational view of atop plate 380 for the inner tank 140 (shown in dashed outline in this view). Thetop plate 380 has anoutlet 300 for allowing passage of liquid from theinner tank 140 to theouter tank 120. There is additionally a small hole or bore 280 passing through theplate 380, permitting relatively small amounts of liquid to pass into or out of theinner tank 140. In a preferred embodiment, thebore 280 is approximately one-eighth inch in diameter; however, other diameters smaller than that of theoutlet 300 can be used for thebore 280 without departing from the scope of the present invention. Thetop plate 380 has anotch 460 along one edge thereof, to create an inlet to the water channel. -
FIG. 4B is an elevational view of abottom plate 400 for the inner tank 140 (shown in dashed outline in this view). Thebottom plate 400 has a central bore oraperture 760 which receives the heating element 220 (shown inFIG. 1 ) and abore 780 which receives the inlet 200 (shown in section in this view). Thebottom plate 400 has anotch 480 along one edge thereof, to create an outlet to the water channel. The water channel may be part of thelabyrinthine passageway 740. -
FIG. 5A is a schematic cutaway view of the top plate assembly, showing thetop plate 420 for theouter tank 120 disposed above thetop plate 380 for theinner tank 140. A pop offvalve 320 is shown passing through thebore 300 of thetop plate 420.FIG. 5A additionally shows aspacer element 340 disposed between the walls of theinner tank 140 and theouter tank 120. -
FIG. 5B is a schematic cutaway view of the bottom plate assembly, showing thebottom plate 400 for theinner tank 140 disposed above thebottom plate 440 for theouter tank 120. Here, too, aspacer 340 is schematically shown between the walls of theinner tank 140 and theouter tank 120. Thebottom plate 440 is shown having theinlet 200 and also showing an opening which communicates with anoutlet 240 to a house or other destination. In this view, theheating element 220 is shown schematically and partially broken away, theheating element 220 passing through abore 760 in thebottom plate 440 for theouter tank 120 and through abore 800 in thebottom plate 400 for theinner tank 140. -
FIG. 6A is an elevational view of thetop plate 420 for theouter tank 120, as also shown inFIG. 5A . The pop offvalve 320 is shown schematically in top elevation in this figure. -
FIG. 6B is an elevational view of thebottom plate 440 for theouter tank 120, as also shown inFIG. 5B . Theinlet 200 and theoutlet 240 are also shown in this view. Theheating element 220 is shown schematically in bottom elevation in this view. -
FIG. 7 is an assembly view of anapparatus 500, which is another embodiment of the apparatus ofFIG. 1 , wherein aspiral separator 620 separates aninner shell 600 and anouter shell 520. Here, the parts are similar to those of the previous figures, and work in the same way, and include: theouter shell 520,end plates inner shell 600, andend plates bottom plate 660 differs somewhat from the previous embodiment, in that a heater element fitting 680 is arranged to one side of the center, as is a pressure release valve fitting 720, and aninlet 700 is close to the center. -
FIG. 8 is a perspective view of theinner tank 600 ofFIG. 7 . Here, theseparator 620 is seen clearly forming a helical path along the outside of theinner tank 600. -
FIG. 9 is a side elevational view of theinner tank 600 ofFIGS. 7 and 8 , also showing theseparator 620. The separator can be formed of metal wire or plate. - The invention being thus described, it will be evident that the same may be varied in many ways by a routineer in the applicable arts. Such variations are not to be regarded as a departure from the spirit and scope of the invention and all such modifications are intended to be included within the scope of the claims.
Claims (8)
1. An apparatus for heating water, comprising:
an outer tank having a circumferential wall, a top plate, and a bottom plate;
an inner tank having a circumferential wall, a top plate, and a bottom plate; and said inner tank being disposed within said outer tank,
a coil having a main body portion, an inlet, and an outlet; wherein said main body portion of the coil is disposed inside said inner tank, said inlet of the coil extends through the bottom wall of the inner tank and the bottom wall of the outer tank;
a heating element extending into an interior of said inner tank; and
an outlet conduit connected to said outer tank, and communicating with an interior of said outer tank.
2. An apparatus for heating water as claimed in claim 1 , further comprising a plurality of band heaters connected to an exterior of said outer tank.
3. An apparatus for heating water as claimed in claim 2 , further comprising a plurality of spacers disposed between said inner tank and said outer tank, forming a labyrinthine passage for fluid flow, so that all of the fluid flowing into said outlet conduit first passes through said labyrinthine passage.
4. An apparatus for heating as claimed in claim 3 , wherein said labyrinthine passage provides additional time for heat transfer to occur between said band heaters and said fluid.
5. An apparatus for heating water as claimed in claim 3 , wherein said plurality of band heaters are selectively actuatable, to selectively vary the amount of heat supplied to said outer tank.
6. An apparatus for heating water as claimed in claim 1 , further comprising a pop off valve disposed through an upper plate of said outer tank.
7. An apparatus for heating water as claimed in claim 1 , wherein said inner tank has a cylindrical wall, an upper plate and a lower plate; and said outer tank has a cylindrical wall, an upper plate and a lower plate.
8. An apparatus for heating water, comprising:
an outer tank having a circumferential wall, a top plate, and a bottom plate;
an inner tank having a circumferential wall, a top plate, and a bottom plate; and said inner tank being disposed within said outer tank,
a coil having a main body portion, an inlet, and an outlet; wherein said main body portion of the coil is disposed inside said inner tank, said inlet of the coil extends through the bottom wall of the inner tank and the bottom wall of the outer tank;
a heating element extending into an interior of said inner tank;
an outlet conduit connected to said outer tank, and communicating with an interior of said outer tank;
a plurality of band heaters connected to an exterior of said outer tank; and
an elongated spacer member helically arranged along the outside surface of said inner tank, forming a helical passage for fluid flow, so that all of the fluid flowing into said outlet conduit first passes through said helical passage.
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US12/189,332 US20100031899A1 (en) | 2008-08-11 | 2008-08-11 | Water heater |
Applications Claiming Priority (1)
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US12/189,332 US20100031899A1 (en) | 2008-08-11 | 2008-08-11 | Water heater |
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US20100031899A1 true US20100031899A1 (en) | 2010-02-11 |
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US12/189,332 Abandoned US20100031899A1 (en) | 2008-08-11 | 2008-08-11 | Water heater |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160282010A1 (en) * | 2015-03-27 | 2016-09-29 | James H. Irvin | High pressure, high temperature, on demand water heater |
WO2016162895A1 (en) * | 2015-04-10 | 2016-10-13 | Iacobucci Hf Aerospace S.P.A. | Heating device |
US20170307252A1 (en) * | 2016-04-25 | 2017-10-26 | Sejin Hightech Co., Ltd | Hot water barrel structure for water dispenser |
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Cited By (5)
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US20160282010A1 (en) * | 2015-03-27 | 2016-09-29 | James H. Irvin | High pressure, high temperature, on demand water heater |
US10151508B2 (en) * | 2015-03-27 | 2018-12-11 | Gas Technology Institute | High pressure, high temperature, on demand water heater |
WO2016162895A1 (en) * | 2015-04-10 | 2016-10-13 | Iacobucci Hf Aerospace S.P.A. | Heating device |
CN107466220A (en) * | 2015-04-10 | 2017-12-12 | 亚科布奇Hf航空股份公司 | Heater |
US20170307252A1 (en) * | 2016-04-25 | 2017-10-26 | Sejin Hightech Co., Ltd | Hot water barrel structure for water dispenser |
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