Field of the invention
[0001] The present invention relates generally to the field of electrical appliances. More particularly, the present invention relates to electromagnetic induction based storage water geysers.
Background of the invention
[0002] Over the years water geysers are being used for domestic and commercial water heating applications. Based on how the water is heated, the water geysers can be broadly classified into gas water geysers, solar water geysers and electric water geysers.
[0003] The gas water geysers are easy to install and convenient to operate. However, the biggest drawback of gas water geysers is the use of gas combustion for heating water. The use of gas water geyser further raises various safety issues such as, but are not limited to, generation of poisonous carbon monoxide gas, fire due to leakages, explosion of geysers etc.
[0004] The other type of water geysers that are commonly used are the solar water geysers that use solar energy for heating. While solar water geysers are environment friendly, safe and reliable, they suffer from less productivity as they cannot heat water during unavailability of the sun. Further, solar water geysers are bulky and cumbersome to install.
[0005] The advantage of the electric geysers is their small size and easy installation. However, due to conventional heating elements in the storage tank of the electric geysers, there is always a risk of electric shocks in case of any fault as the heating element is in direct contact with the water.
[0006] Further, the water geysers which are currently available in the market also suffer from disadvantages such as, but are not

limited to, scaling and calcification on the heating element surface in the hard water condition. Further, scaling on the conventional heating element is due to high surface temperature, used in the hard water condition triggers the scaling and calcification process on the element surface. It has been observed that there is depreciation of heating efficiency up to 50% or more with respect to sedimentation of scale on the heating element. Further, it has been observed that scale and sediment build-up due to calcification on the surface of the heating element may lead to premature failure. Furthermore, it also suffers from non-uniform water heating and maintenance issues due to increased size of heating element due to deposition of scale on the element surface.
[0007] However, various techniques have been used in order to minimize scaling and calcification process on the heating element surface which includes, but are not limited to, glass coating on the heating element and provisioning of anode and magnesium rod in the water tank. Further, the manufacturing process for glass coated heating element is highly expensive, which includes facility installation and the required raw material. Furthermore, glass coating also reduces heating efficiency of the heating element. Typically, anode and magnesium rods needs periodic replacement, and also requires removal of silica junk collected in the water tank bottom. Anode and magnesium rods and glass coated heating element shares the maximum percentage of the geyser cost and manufacturing process of such heating elements also contributes in environmental pollution.
[0008] In light of the aforementioned drawbacks, there is a need for an improved storage water geyser that overcomes the limitations of the existing water geysers.
Summary of the invention
[0009] In various embodiments of the present invention, a storage water geyser is provided. The geyser comprises a set of thermostats configured to trigger a first command for energizing an induction coil for inducing a magnetic flux. Further, geyser comprises a storage tank

configured to receive the magnetic flux repeatedly for magnetizing the storage tank. The magnetization produces eddy currents in the storage tank resulting in heat generation in the storage tank for heating the water present in the storage tank.
Brief description of the accompanying drawings
[0010] The present invention is described by way of embodiments illustrated in the accompanying drawings wherein:
[0011] FIG. 1 illustrates different views of a geyser 100 in accordance with an embodiment of the present invention;
[0012] FIG. 2 illustrates various components of a geyser 200 in accordance with an embodiment of the present invention;
[0013] FIG. 3 illustrates various components of a geyser 300 in accordance with an embodiment of the present invention;
[0014] FIG. 4 illustrates various components of a geyser 400 in accordance with an embodiment of the present invention;
[0015] FIG. 5 illustrates a top view, a side view, a bottom view and a prospective view of the tank assembly, in accordance with an embodiment of the present invention;
[0016] FIG. 6 illustrates a side view of the tank assembly, in accordance with an embodiment of the present invention;
[0017] FIG. 7 illustrates different views of a storage geyser 700, in accordance with an embodiment of the invention;
[0018] FIG. 8 illustrates various components of a geyser 800, in accordance with an embodiment of the present invention;

[0019] FIG. 9 illustrates different views of a storage geyser 900, in accordance with an embodiment of the invention;
[0020] FIG. 10 illustrates various components of a geyser 1000, in accordance with an embodiment of the present invention; and
[0021] FIG. 11 illustrates a side view of the tank assembly 1100 which facilitate water input and output from the storage tank, in accordance with an embodiment of the present invention.
Detail description of the invention
[0022] The present invention provides an electromagnetic induction based storage water geyser which employs a uniquely designed tank assembly and a storage tank which is used as a heat exchanger.
[0023] The following disclosure is provided in order to enable a person having ordinary skill in the art to practice the invention. Exemplary embodiments are provided only for illustrative purposes and various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[0024] The present invention would now be discussed in context of embodiments as illustrated in the accompanying drawings.
[0025] In an embodiment of the present invention, an electromagnetic induction based storage water geyser is provided.

Hereinafter the terms 'electromagnetic induction based storage water geyser', 'electromagnetic induction based storage water heater' , 'water heater', and 'water geyser' will be referred to as geyser.
[0026] Fig. 1 illustrates different views of a geyser 100 in accordance with an embodiment of the present invention. The different views comprise a back view, a front view, a side view, and a top view. The geyser 100 employs electromagnetic induction technique to heat the water. The geyser 100 receives water from an inlet to the storage tank, water in the storage tank gets heats up, and then passes the heated water to the output through an outlet. The heated water may be used for various purposes, due to its food grade quality it can be used in medical purpose, washing, cleaning, bathing, and other industrial applications. In an embodiment of the present invention, the geyser 100 is a tank or storage water geyser system and facilitates efficient, safe, reliable, and low maintenance heating solution for heating of water.
[0027] Fig. 2 illustrates various components of a geyser 200 in accordance with an embodiment of the present invention. The components comprise a body or outer covering 1 of the geyser 200, a hot air exhaust 2, a direct current (DC) fan 3, a main circuit module 4, an induction coil 5, a partition 6 between electronic circuit module and a storage tank 9, holes 7, bolts 8, the storage tank 9 as a heat exchanger, an assembly collar 10, a water inlet pipe 11, a hot water outlet pipe 12, a set of thermostats 13 (a first thermostat pre-set at a temperature in the range of between 25 to 65 degree Celsius and second thermostat pre-set at 90 degree Celsius cut-off), thermostat pipe sleeves 14, a storage tank collar 15, a top body cover 16, an electronic display and temperature controller module 17, indicators 18 (e.g. red and green).
[0028] In an embodiment of the present invention, heating of the water initiates when the pre-set thermostat 13 senses that the water temperature is below a pre-set value. The set of thermostats 13 triggers a first command i.e. switch ON command, which is sent to the electronic display and temperature control module 17 which

subsequently sends the first command to the main circuit module 4 to energize the induction coil 5, which as a consequence induces electromagnetic induction in the storage tank 9 to heat water present in the storage tank 9.
[0029] In an embodiment of the present invention, the main circuit module 4 is the power source of the geyser 200. Further, when tank 9 water temperature reaches a desired level, the pre-set thermostat 13 triggers a second command i.e. switch OFF command, which is sent to temperature control module 17 in order to stop heating, which subsequently sends the second command to the main circuit module 4 to cut-off the power supply in order to maintain the desired tank 9 water temperature. The thermal cut-off feature is further enhanced by the second thermostat 13 (90 degree Celsius cut-off), which cuts off the power supply, if the water temperature exceeds the highest pre¬set level. Further, hot water discharge, may be controlled by tap connected to the outlet pipe 12. Therefore, when tap is open, hot water present in the upper part of the tank flow via outlet pipe 12 to the tap, simultaneously cold water flow into the storage tank 9 at the bottom via inlet pipe 11. The thermostats 13 sense the temperature drop, and subsequently sends the first command to temperature controlling module 17 which further send command to main circuit module 4 to start the heating and thereafter sends the second command after desired temperature is achieved, and heating cycle continues. The two thermostats 13 (a first thermostat pre-set at a temperature in the range of between 25 to 65 degree Celsius and second thermostat pre-set at 90 degree Celsius cut-off) to ensure reliability of the operation and safety of the user.
[0030] In an embodiment of the present invention, after the main circuit module 4 turns ON, it energizes the induction coil 5 in order to magnetize the water storage tank 9 which acts as a heat exchanger. In an embodiment of the present invention, the induction coil 5 is placed under the storage tank 9. Further, when an alternating electric current (AC) passes through the induction coil 5, the resulting oscillating magnetic field induces a magnetic flux which repeatedly magnetizes the storage tank 9. Further, the magnetization produces

eddy currents in the storage tank 9 resulting in large amount of heat generation in the storage tank 9. Therefore, induction coil 5 placed beneath the storage tank 9 heats the tank 9 due to eddy current losses on the tank metal surface, this generated heat is transferred into water inside the tank 9. Thus, the generated large amount of heat instantly heats up the water which is present in the storage tank 9. The storage tank 9 which acts as a heat exchanger is made up of type 304 stainless steel, 316 stainless steel and any other ferrous metal which is capable of being heated through electromagnetic induction.
[0031] In an embodiment of the present invention, while in operation, the main circuit module 4 generates heat. The heat generated by the main circuit module 4 is cooled by circulating air through DC fan 3, which operates during the geyser's 200 operation. An hot air exhaust passage 2 is provided in the geyser 200 body 1 in order to pass the hot air blown by the DC fan 3. In an embodiment of the present invention, the operation of the DC fan 3 is controlled by the main circuit module 4.
[0032] In an embodiment of the present invention, the temperature controlling module 17 is configured to set the geyser's 200 desired output temperature. The water output temperature may be set in the range of between 25 to 65 degrees Celsius as per the requirement. Further, an electronic output temperature sensor may be used to monitor temperature of the hot water in the storage tank 9. An electronic temperature display, is provided on the front side of the geyser 200 to display the temperature of the hot tank water. Further, the geyser body 1 comprises the separator wall 6 which is used to isolate the main circuit module 4, the induction coil 5, the electronic display and temperature controlling module 17 and the DC fans 3 from the storage tank 9.
[0033] In an embodiment of the present invention, the geyser 200 may be associated with automatic output water temperature control functionality. Advantageously, the automatic output water temperature control functionality eliminates the need of manual selection of desired temperature in order to get hot water of desired temperature.

The automatic output water temperature control functionality may be achieved by transforming the manual mode switching to automatic mode switching which is controlled by a mobile application via Bluretooth/WiFi/internet to control the geyser 200 and to get water at a pre-defined temperature.
[0034] FIG. 3 illustrates various components of a geyser 300 in accordance with an embodiment of the present invention. The components comprise a body or outer covering 1 of the geyser 300, a hot air exhaust 2, a direct current (DC) fan 3, a main circuit module 4, an induction coil 5, a partition 6 between electronic circuit module 4 and a storage tank 9, holes 7, bolts 8, the storage tank 9 as a heat exchanger, an assembly collar 10, a water inlet pipe 11, a hot water outlet pipe 12, a set of thermostats 13 (pre-set at 25 to 65 and 90 degree Celsius cut-off), thermostat pipe sleeves 14, a storage tank collar 15, a top body cover 16, an electronic display and temperature controller module 17, indicators 18 (e.g. red and green).
[0035] In an embodiment of the present invention, the geyser 300 employs electromagnetic induction technique to heat the water in the storage tank 9. As illustrated in the FIG. 3, the geyser 300 employs one induction coil 5 to heat storage tank 9 as a heat exchanger. The induction coil 5 is placed on one side of the storage tank 9 and heats the storage tank 9 from that side. The working principle and operation of each of the components of the geyser 300 is similar to the geyser 200 and thus, has not been discussed again in order to maintain brevity of the specification.
[0036] FIG. 4 illustrates various components of a geyser 400 in accordance with an embodiment of the present invention. The components comprise a body or outer covering 1 of the geyser 400, a hot air exhaust 2, a direct current (DC) fan 3, a main circuit module 4, an induction coil 5, a partition 6 between electronic circuit module and a storage tank 9, holes 7, bolts 8, a storage tank 9 as a heat exchanger, an assembly collar 10, a water inlet pipe 11, a hot water outlet pipe 12, a set of thermostats 13 (a first thermostat pre-set at a temperature in the range of between 25 to 65 degree Celsius and

second thermostat pre-set at 90 degree Celsius cut-off), thermostat pipe sleeves 14, a storage tank collar 15, a top body cover 16, an electronic display and temperature controller module 17, indicators 18 (e.g. red and green).
[0037] In an embodiment of the present invention, the geyser 400 employs electromagnetic induction technique to heat the water in the storage tank 9. As illustrated in the FIG. 4, the geyser 400 employs one induction coil 5 to heat storage tank 9 which is a heat exchanger. The induction coil 5 is placed on one side of the storage tank 9 and heats the storage tank 9 from that side. In this embodiment, the storage tank 9 and tank assembly are inverted. Further, length of tank assembly inlet pipe 11 and the outlet pipe 12 are resized. The working principle and operation of each of the components of the geyser 400 is similar to the geyser 200 and thus, has not been discussed again in order to maintain brevity of the specification.
[0038] FIG. 5 illustrates a top view, a side view, a bottom view and a prospective view of the tank assembly, in accordance with an embodiment of the present invention, for facilitating water into the storage tank 9. Further, FIG. 6 illustrates a side view of the tank assembly, in accordance with an embodiment of the present invention, for facilitating water into the storage tank 9.
[0039] Fig. 7 illustrates different views of a storage geyser 700, in accordance with an embodiment of the invention. The different views comprise a front view, a side view and a top view of the geyser 700. The geyser 700 employs electromagnetic induction technique to heat the water. The geyser 700 receives water from an inlet 11 to the storage tank 9, water present in the storage tank 9 gets heats up, and subsequently passes the heated water to the output through an outlet. The heated water may be used for various purposes, due to its food grade quality it may be used in medical purpose, washing, cleaning, bathing, industrial applications, etc. In an embodiment of the present invention, the geyser 700 is a tank or storage water

geyser system and facilitates efficient, safe, reliable and low maintenance heating solution for heating of water.
[0040] FIG. 8 illustrates various components of a geyser 800, in accordance with an embodiment of the present invention. The components comprise a body or outer covering 1 of the geyser 800, a hot air exhaust 2, a direct current (DC) fan 3, a main circuit module 4, an induction coil 5, a partition 6 between electronic circuit module and a storage tank 9, holes 7, bolts 8, a storage tank 9 as a heat exchanger, an assembly collar 10, a water inlet pipe 11, a hot water outlet pipe 12, a set of thermostats 13 (a first thermostat pre-set at a temperature in the range of between 25 to 65 degree Celsius and second thermostat pre-set at 90 degree Celsius cut-off), thermostat pipe sleeves 14, a storage tank collar 15, a top body cover 16, an electronic display and temperature controller module 17, indicators 18 (e.g. red and green).
[0041] In an embodiment of the present invention, the geyser 800 employs electromagnetic induction technique to heat the water present in the storage tank 9. As illustrated in the FIG. 8, the geyser 800 employs one induction coil 5 to heat storage tank 9 which is a heat exchanger. The induction coil 5 is placed on one side of the storage tank 9 and heats the storage tank 9 from that side. In this embodiment, storage tank 9 and tank assembly are placed horizontally. Tank assembly is placed in a manner to ensure efficient water flow into the storage tank 9 and hot water output from the storage tank 9. Further, due to natural phenomenon, water which gets heated at the bottom of the tank, raises and collected upper side of the horizontal storage tank 9. Tank assembly output pipe 12 is designed to collect hot water from the upper part of the storage tank 9, as water convection take place in the tank in which cold water at the bottom get heats up and collected at the upper part of the tank. The water convection cycle will continue until water temperature reach the desired temperature. The working principle and operation of each of the components of the geyser 800 is similar to the geyser 200 and thus, has not been disclosed again in order to maintain brevity of the specification.

[0042] Fig. 9 illustrates different views of a storage geyser 900, in accordance with an embodiment of the invention. The different views comprise a front view, a side view and a top view. The geyser 900 employs electromagnetic induction technique to heat the water. The geyser 900 receives water from an inlet to the storage tank, water in the storage tank gets heats up, and then passes the heated water to the output through an outlet. The heated water may be used for various purposes, due to its food grade quality it can be used in medical purpose, washing, cleaning, bathing, and other industrial applications. In an embodiment of the present invention, the geyser 900 is a tank or storage water geyser system and facilitates efficient, safe, reliable, and low maintenance heating solution for heating of water.
[0043] FIG. 10 illustrates various components of a geyser 1000, in accordance with an embodiment of the present invention. The components comprise a body or outer covering 1 of the geyser 1000, a hot air exhaust 2, a direct current (DC) fan 3, a main circuit module 4, an induction coil 5, a partition 6 between electronic circuit module and a storage tank 9, holes 7, bolts 8, the storage tank 9 as a heat exchanger , an assembly collar 10, a water inlet pipe 11, a hot water outlet pipe 12, a set thermostats 13 (a first thermostat pre-set at a temperature in the range of between 25 to 65 degree Celsius and second thermostat pre-set at 90 degree Celsius cut-off), thermostat pipe sleeves 14, a storage tank collar 15, a top body cover 16, an electronic display and temperature controller module 17, indicators 18 (e.g. red and green).
[0044] In an embodiment of the present invention, the geyser 1000 employs electromagnetic induction technique to heat the water in the storage tank 9. As illustrated in the FIG. 10, the geyser 1000 employs one induction coil 5 to heat storage tank as a heat exchanger 9. The induction coil 5 is placed under the horizontal heat exchanger 9 and heats the storage tank 9 from that side. In this embodiment, the storage tank 9 and tank assembly are placed horizontally. Tank assembly has been designed to ensure efficient water flow into it and

hot water output from the storage tank 9. Due to natural phenomenon, water which gets heated at the bottom of the tank, raises and collected upper side of the horizontal storage tank 9. The tank assembly output pipe 12 is designed to collect hot water from the upper part of the storage tank 9. The working principle and operation of each of the components of the geyser 1000 is similar to the geyser 200 and thus, has not been discussed again in order to maintain brevity of the specification.
[0045] FIG. 11 illustrates a side view of the tank assembly 1100 which facilitate water input and output from the storage tank, in accordance with an embodiment of the present invention. This uniquely designed tank assembly 1100 is used in the horizontal geyser 800 and 1000 and advantageously provides long life in hard water conditions. Further, in another exemplary embodiment of the present invention, the geyser 800 may also be used to heat the house, either as part of a forced air combination system, or a radiant heating system.
[0046] Advantageously, in various embodiments of the present invention, the storage tank 9 as the heat exchanger of the present invention provide a large heating surface area that rapidly heats the water stored in it. Therefore, this aids in reducing flush boiling of the water and provides uniformly heated water. Further, low surface temperature of the heat exchangers of the present invention does not allow scaling and calcification in the geyser. The storage tank 9 as a heat exchanger eliminates the need of a conventionally used electrical heating element to heat water in a storage tank, which further eliminates the need to employ anode and magnesium rods in the tank. The electromagnetic induction heating of the heat exchangers of the present invention makes the geyser shock proof as there is no direct electrical contact with the water. Further, the heat exchangers of the present invention further facilitate a longer and reliable geyser life. Further, the geyser of the present invention may be used for a wide array of commercial water heating applications, for example in hairdressing salons, spas, laundromat facilities, restaurants, lodges, hotels, etc. Further, the geyser may also serve the needs of businesses, schools, and other organizations by providing low-cost

hot water for lavatories, cafeterias. The geyser may facilitate saving of space and is cost effective. The geyser may also be used for melting ice on the driveways. The geyser may also be used for dishwashers or clothes washers and for a solar water heating system for commercial water heating application. Furthermore, the industrial application of the geyser may include for humidification, in refrigeration equipment, in heat transfer products, for packaging solutions, and for semi and fully automatic washing machines used in laundry services.
[0047] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from or offending the spirit and scope of the invention.

We claim

1.A storage water geyser (200), the geyser (200) comprising:
a set of thermostats (13) configured to trigger a first command for energizing an induction coil (5) for inducing a magnetic flux; and
a storage tank (9) configured to receive the magnetic flux repeatedly for magnetizing the storage tank (9), wherein the magnetization produces eddy currents in the storage tank (9) resulting in heat generation in the storage tank (9) for heating the water in the storage tank (9).
2. The storage water geyser (200) as claimed in claim 1, wherein the set of thermostats (13) comprises a first thermostat pre¬set at a temperature in the range of between 25 to 65 degree Celsius and a second thermostat pre-set at 90 degree Celsius cut-off.
3. The storage water geyser (200) as claimed in claim 1, wherein the first command is a switch 'ON' command which is sent to an electronic display and temperature control module (17) and subsequently sends the first command to a main circuit module (4) to energize the induction coil (5).
4- The storage water geyser (200) as claimed in claim 1, wherein the set of thermostats (13) for generating the first command is configured to sense that the water temperature is below a pre¬set value.
5. The storage water geyser (200) as claimed in claim 1, wherein the storage tank (9) is made up of at least type 304 stainless steel, 316 stainless steel and a ferrous metal.
6. The storage water geyser (200) as claimed in claim 1, wherein the induction coil (5) is placed at least beneath the storage tank (9) or vertically on one side of the storage tank (9) which

heats the tank 9 due to eddy current losses on the tank (9) metal surface.
7. The storage water geyser (200) as claimed in claim 1, wherein the storage tank (9) is a heat exchanger for heating up the water present in the storage tank (9) based on the heat generated due to eddy currents.
8. The storage water geyser (200) as claimed in claim 1, wherein after the storage tank (9) water temperature reaches a desired level, the pre-set thermostat (13) triggers a second command to a temperature control module (17) for stopping the heating and subsequently the second command is sent to a main circuit module (4) to cut-off the power supply in order to maintain the desired tank (9) water temperature.
9. The storage water geyser (200) as claimed in claim 1, wherein the storage water geyser (200) comprises an inlet pipe (11) for cold water inflow and an outlet pipe (12) for hot water out flow respectively.
10.The storage water geyser (200) as claimed in claim 2, wherein the second thermostat (13) which is pre-set at 90 degree Celsius cuts off the power supply to a main circuit module (4), if the water temperature exceeds the highest pre-set level.