The present invention relates generally to an electromagnetic or magnetic induction water heating/chilling assembly or magnetocaloric fluid heat pump. More specifically, the present invention discloses a magnetic induction water heater/chiller which incorporates an elongated and rotating magnet or electromagnetic array configured within a housing, a heat/chill conductive disks/plates array arranged in proximity to the rotating magnet/electromagnetic array. A fluid is communicated through the conductive array between cold/ambient inlet fluid and heated outlet locations in order to provide on demand conditioned (heated or chilled) fluid.
The phenomena of magnetic or electromagnetic induction heating is well known in the prior art by which heat is generated in an electrically conductive object by the generation of eddy currents, also called Joule heating. The typical induction heater includes an electronic oscillator which passes a high frequency alternating current through an electromagnet. The eddy currents flowing through the resistance of a conductive metal placed in proximity to the magnet/electromagnet in turn heat it. Put another way, the eddy currents result in a high-frequency oscillating magnetic field which causes the magnet's polarity to switch back and forth at a high-enough rate to produce heat as byproduct of friction.
One known example of a prior art induction heating system is taught by the electromagnetic induction air heater of Garza, US 2011/0215089, which includes a conductive element, a driver coupled to the conductive element, an induction element positioned close to the conductive element, and a power supply coupled to the induction element and the driver. Specifically, the driver applies an angular velocity to the rotate the conductive element around a rotational axis. The power supply provides electric current to the induction element to generate a magnetic field about the induction element such that the conductive element heats as it rotates within the magnetic field to transfer heat to warm the cold fluid flow streams. The fluid flow streams are circulated about the surface of the conductive element and directed by the moving conductive element to generate warm fluid flow streams from the conductive element.
Also referenced is the centrifugal magnetic heating device of Hsu 2013/0062340 which teaches a power receiving mechanism and a heat generator. The power receiving mechanism further includes a vane set and a transmission module. The heat generator connected with the transmission module further includes a centrifugal mechanism connected to the transmission module, a plurality of bases furnished on the centrifugal mechanism, a plurality of magnets furnished on the bases individually, and at least one conductive member corresponding in positions to the magnets. The vane set is driven by nature flows so as to drives the bases synchronically with the magnets through the transmission module, such that the magnets can rotate relative to the conductive member and thereby cause the conductive member to generate heat.
The present invention discloses, without limitation, an electromagnetic or magnetic tankless water heating system. The heater/chiller system is applicable to any fluid and, as will be described further, the water heater can alternatively be reconfigured as a water chiller assembly utilizing the teachings of magneto-caloric heating or cooling.
In either configuration, a housing incorporates a rotating magnet or electromagnet array including a sleeve or shaft component which can be rotatably supported and driven, such as via an electric motor or other rotary inducing input. A plurality of linearly spaced apart plates project radially from the rotatably sleeve or shaft, the plates each incorporate one or more individual magnet or electromagnet arrays. Brackets extend from the rotating magnetic array shaft or sleeve to end mounting locations within the water heater housing or cabinet.
A thermal conductive array (heating or cooling) is arranged in proximity to the rotating magnet/electromagnetic array and typically includes a plurality of annular conductive (e.g. disk) packages which alternate with the individual magnet/electromagnet arrays. The disk packages can be fixed within the interior of the housing, and are interconnected via a fluid carrying conduit extending between inlet and outlet locations of the housing so that fluid is communicated through interior pathways or channels configured within the individual thermal conductive disk packages in order to provide on demand conditioned fluid.
Upon rotation of the shaft or sleeve supported magnetic arrays relative the conductive packages, generation of magnetic frictional/oscillating fields occurs in the spaces between the opposing magnets/electromagnets and the conductive disk packages. As a result, magnetic or electromagnetic heating or cooling of the conductive disk packages occurs owing to the magnetic friction created from the oscillating fields, the intensity (and resulting heating or cooling factor) being further adjustable according to a number of parameters not limited to relative speed of rotation.
In this manner, the fluid communicated through the interior pathways or channels of each conductive disk packages are conductively heated by the heat of the friction resulting from the oscillating fields (in response to the magneto-caloric effect), owing to the inter-rotational motion between the magnetic or electromagnetic plates and the conductive packages. The fluid pathways within the individual disk packages can be arranged in series or in parallel to a common fluid carrying conduit such that the present invention accordingly provides for on-demand conditioned fluid (e.g. without limitation being hot or chilled water or other liquid or gas) without the requirement of a fluid holding tank.
Reference will now be made to the attached drawings, when read in combination with the following detailed description, wherein like reference numerals refer to like parts throughout the several views, and in which:
With reference to the attached illustrations, the present invention discloses, in one non-limited application, either of magnetic or electromagnetic induction water heaters, examples of which are illustrated at 10 in
In combination with
A central sleeve 18 is supported in rotatable fashion within a length extending interior of the housing 10. As further depicted in
A plurality of spaced magnetic or electromagnetic plates are depicted in one non-limiting arrangement at 36, 38, 40, 42, 44, 46, 48, 50 and 52, arranged in axially spaced apart fashion and extending radially outwardly from the central sleeve 18. As further depicted in the cutaway view of
An elongated conductive component (also partially depicted in cutaway) includes an elongated body supported (typically stationary) about the sleeve 18 and between the linearly spaced and radially projecting magnetic or electromagnetic plates 36-52. The conductive component depicts a plurality of circumferentially extending (typically disk shaped) fluid communicating packages, these depicted at 62, 64, 66, 68, 70, 72, 74 and 76 arranged in alternating fashion with the rotating magnet/electromagnetic plates 36-52. It is understood that the conductive packages can be constructed in two pieces and are welded or otherwise joined together in order to align the interior passageways (see as described below).
With subsequent reference to
An electric motor 84 or like rotational inducing component is provided and can include without limitation any type of blower motor, other electrical motor or generator, or any other type of motor-engine or other rotary inducing input. As further shown in
In this fashion, the varying magnetic fields are generated via the rotation of the magnetic/electromagnetic plates to inductive heat (according to the illustrated embodiment) the space between the magnetic or electromagnetic plates and the conductive packages, owing to the alternating fields generated by the rotation of the proximate located magnets/electromagnets to frictionally heat and include eddy currents that travel in the conductive plates packages and dissipate in form of heat losses that conductively heat the fluid circulating in the packages. Associated thermostat controls can be utilized in order to cycle the motor 84 on periodically in order to keep the plates constantly warm (or chilled in an optional magneto caloric heat pump variant), such further optionally occurring without necessarily having fluid flowing through the conductive fluid heating packages.
Without limitation, the configuration and material selection for each of the magnetic or electromagnetic plates 36-52 can be selected from any material not limited to rare earth metals and alloys and which possesses properties necessary to generate adequate oscillating magnetic fields for inducing magnetic or electromagnetic heating, such again resulting from the ability to either maintain or switch the magnet polarity at a sufficiently high rate in order for the generated friction to create the desired heat/cold profile. The conductive fluid communicating packages 62-76 can be constructed, without limitation, of a ferromagnetic, paramagnetic or diamagnetic material and respond to the oscillating fields generated via magnetic induction such that they create eddy currents and Joule heating.
The conductive disk package provides conditioning of the fluid (such as heating or chilling depending upon the variant) communicated between the inlet 78 and outlet 80 locations of the disk package which are tied into the common fluid line 82 extending between the housing inlet 14 and outlet 16 locations. In combination with the cutaway views of
As further shown, the non-limiting example of the interior fluid pathway configuration is shown in various orientations in each of
It is further noted, without limitation, that the invention contemplates in one non-limiting embodiment having all of the conductive packages concurrently circulating and heating/chilling fluid from the common line 82 in order to provide a steady and pressurized flow of conditioned fluid through the outlet 16. Additional non-limiting variants further envision the ability to utilize appropriate valves or controls in order to selectively activate/deactivate fluid flow through some or all of the disk packages in order to modify the volume of conditioned fluid being delivered from the water heater/chiller assembly 10, such further contemplating engaging or disengaging the rotation of the magnetic plates if the disk packages are active or inactive and connecting or disconnecting an electric supply, as well as varying intensity by increasing or decreasing power supply to the electromagnets of the disk packages that are active and engaged, if electromagnets are used, via the motor or other rotary inducing input RPM or rotational speed to accomplish best performance in terms of efficiency or COP (coefficient of performance). It is also envisioned that the associated valving/controls can be further designed in order to successively pass conditioned fluid through multiple (including consecutive or non-consecutive) conductive disk packages, such as in order to modify a desired fluid delivery temperature.
Referencing again
Given the above description, the present invention additionally envisions numerous techniques, teachings and factors for modifying the temperature range of heating/cooling or which can be accomplished for the variants described herein. This can include modifying the rotational speed (such as measured in RPM's or revolutions per minute) of the magnetic plates, thereby affecting the magnetic or electromagnetic induction (magnetic field created) and, consequently, adjusting the eddy currents created in the conductive disk packagers (sandwiched plates with interior fluid carrying pathways). With higher rotation the oscillating high frequencies of the magnetic/electromagnetic induction increases the temperature in the case of heating and also creates higher demagnetization forces (once the magnetic/electromagnetic induction is “off”) that can absorb more heat if exposed to a fluid flow (in the case of inductive cooling).
With reference to
In the example of
With further reference to
As further depicted in the length cutaway of
As with the previously described embodiment in
A plurality of spaced magnetic or electromagnetic plates are depicted in one non-limiting arrangement at 234, 236, 238, 240, 242, 244, 246, 248, and 250, arranged in axially spaced apart fashion and extending radially outwardly from the central sleeve 214. As previously described in reference to the cutaway view of
An elongated conductive component (also partially depicted in cutaway) is again provided (similar to the first variant) and includes an elongated body supported (typically stationary) about the sleeve 214 and between the linearly spaced and radially projecting magnetic or electromagnetic plates 234-250. The conductive component depicts a plurality of circumferentially extending (typically disk shaped) fluid communicating packages, these depicted in cutaway in
A cross sectional cutaway of the individual disk packages, such as previously described in reference to
The conduit sub-sections 268-276 can, without limitation, be in communication with each interior pathway (or pair of interior pathways) associated with each conductive package or pair of disk packages 254/256, 258/260, 262/264. Without limitation, it is also envisioned that the conductive packages can be tied together in parallel to the common fluid conduit (or subsections thereof) to provide a ready supply of on demand hot or chilled water or other fluid, and can alternatively be communicated in series to optimize heating/chilling of fluid by prolonging the exposure of the fluid to the heated conductive plates.
The conduit sections can also include standardized circumferential locations which mirror those depicted at 278, 280, 282, 284, 286, 288, 290 and 292, these envisioned to be merged into the individual lower subsection configurations shown at 252-266 respectively and so that each disk package depicts a pair of sandwiched and inter-affixed plates which may have been previously milled or bored in order to establish the desired interior pathway configuration and, as will be further described with reference to
An electric motor 294 or like rotational inducing component is provided and can include without limitation any type of blower motor, other electrical motor or generator. In contrast to the interiorly supported variant in
Similar to
Proceeding to
In operation, the conduit inlet 210 circulates the fluid (air/liquid) in a circuitous and progressively circumferential fashion similar to that shown by pathways likewise depicted in
In this manner, the individual stacked plates 252′/252″ provide scalable sub-assemblies within each of the overall stacked pairs of arrays previously identified in
Proceeding to
Referring first to
Proceeding to
As further shown, a plurality of individual throttling or agitating elements are depicted (examples of these being shown at 514, 516, 518, et seq.,) which construct reverse bended pathways. As previously described, and without limitation, the dimpled elements can be reconfigured in any fashion desired and can again include any of convex or concave shapes for or other profiles for adapting the fluid flow within the disk package as desired in order to throttle and adjust fluid flow within each of the intersecting pathways in order to enhance thermal transfer from the conductive disk packages to the interiorly circulating fluid.
A variant of the pathway network depicted in previous embodiments includes an alternating combinations of dimples (see individual pluralities of dimples 610/612/614) at distributed locations across the conductive plate. The dimple projections alternate with linear and branching portions, these including each of full length portions 616, 618, 620, et. seq., from which extend smaller linear branching locations 622, 624, 626, et sq. The patterning of the branching portions or sections define a repeating “Y” pattern which, in combination with the subset pluralities of distributed dimples, operate to avoid different fluid flows at different temperatures (hot/cold) during transfer through the conductive plates, as well as to optionally provide additional flow throttling or interruption of the fluid as it travels through the disk package network between the inlet 606 and outlet 608. Without limitation, is it envisioned that other non-limiting arrangements of fluid flow and throttling patterns can be integrated into each conductive disk package in order to optimize the desired fluid thermal transfer characteristics.
It is further again noted, without limitation, that the invention contemplates in one non-limiting embodiment having all of the conductive packages concurrently circulating and heating/chilling fluid from a common line (such as previously identified at 82) in order to provide a steady and pressurized flow of conditioned fluid through the outlet. Additional non-limiting variants further envision the ability to utilize appropriate valves or controls in order to selectively activate/deactivate fluid flow through some or all of the disk packages in order to modify the volume of conditioned fluid being delivered from the fluid heater/chiller assembly, such further contemplating engaging or disengaging the rotation of the magnetic plates if the disk packages are active or inactive and connecting or disconnecting an electric supply, as well as varying intensity by increasing or decreasing power supply to the electromagnets of the disk packages that are active and engaged, if electromagnets are used, via the motor or other rotary inducing input RPM or rotational speed to accomplish best performance in terms of efficiency or COP (coefficient of performance). It is also envisioned that the associated valving/controls can be further designed in order to successively pass conditioned fluid through multiple (including consecutive or non-consecutive) conductive disk packages, such as in order to modify a desired fluid delivery temperature.
As previously described, other and additional envisioned applications can include adapting the present technology for use in magnetocaloric heat pump (MHG) applications, such utilizing a magneto-caloric effect (MCE) provide either of heating or cooling properties resulting from the magnetization (heat) or demagnetization (cold) cycles. The goal in such applications is to achieve a coefficient of performance (defined as a ratio of useful heating or cooling provided to work required) which is greater than 1.0. In such an application, the system operates to convert work to heat as well as additionally pumping heat from a heat source to where the heat is required (and factoring in all power consuming auxiliaries). As is further known in the relevant technical art, increasing the COP (such as potentially to a range of 2.0-3.5 or upwards) further results in significantly reduced operating costs in relation to the relatively small input electrical cost required for rotating the conductive plate(s) relative to the magnetic plate(s). Such magnetic refrigeration techniques result in a cooling technology based on the magneto-caloric effect and which can be used to attain extremely low temperatures within ranges used in common refrigerators, such as without limitation in order to reconfigure the present system as a water chiller.
As is further known in the relevant technical art, the magneto-caloric effect is a magneto-thermodynamic phenomenon in which a temperature change of a suitable material is again caused by exposing the material to a changing magnetic field, such being further known by low temperature physicists as adiabatic (defined as occurring without gain or loss of heat) demagnetization. In that part of the refrigeration process, a decrease in the strength of an externally applied magnetic field allows the magnetic domains of a magneto-caloric material to become disoriented from the magnetic field by the agitating action of the thermal energy (phonons) present in the material.
If the material is isolated so that no energy is allowed to (re)migrate into the material during this time, (i.e., again the adiabatic process) the temperature drops as the domains absorb the thermal energy to perform their reorientation. The randomization of the domains occurs in a similar fashion to the randomization at the curie temperature of a ferromagnetic, paramagnetic or diamagnetic material, except that magnetic dipoles overcome a decreasing external magnetic field while energy remains constant, instead of magnetic domains being disrupted from internal ferromagnetism (or paramagnetism) as energy is added. Applications of this technology can include, in one non-limited application, the ability to heat a suitable alloy arranged inside of a magnetic field as is known in the relevant technical art, causing it to lose thermal energy to the surrounding environment which then exists the field cooler than when it entered.
Other envisioned applications include the ability to generate heat for conditioning the water utilizing either individually or in combination rare earth magnets placed into a high frequency oscillating magnetic field as well as static electromagnetic field source systems including such as energized electromagnet assemblies which, in specific instances, can be combined together within a suitable assembly not limited to that described and illustrated herein and for any type of electric induction, electromagnetic and magnetic induction application. It is further envisioned that the present assembly can be applied to any material which is magnetized, such including any of diamagnetic, paramagnetic, and ferromagnetic materials without exemption also referred to as magnetocaloric materials (MEMs).
Additional factors include the ability to reconfigure the assembly so that the frictionally heated fluid existing between the overlapping rotating magnetic and stationary fluid communicating conductive plates may also include the provision of additional fluid mediums (both gaseous and liquid state) for better converting the heat or cooling configurations disclosed herein. Other envisioned applications can include the provision of capacitive and resistance (ohmic power loss) designs applicable to all materials/different configurations as disclosed herein.
The present invention also envisions, in addition to the assembly as shown and described, the provision of any suitable programmable or software support mechanism, such as including a variety of operational modes. Such can include an Energy Efficiency Mode: step threshold function at highest COP (at establish motor drive rpm) vs Progressive Control Mode: ramp-up curve at different rpm/COPs).
Other heat/cooling adjustment variables can involve modifying the degree of magnetic friction created, such as by varying the distance between the conductive fluid circulating disk packages and alternating arranged magnetic/electromagnetic plates. A further variable can include limiting the exposure of the conductive fluid (gas, liquid, etc.,) to the conductive component/linearly spaced disk packages, such that a no flow condition may result in raising the temperature (and which can be controllable for certain periods of time).
As is further generally understood in the technical art, temperature is limited to Curie temperature, with magnetic properties associated with losses above this temperature. Accordingly, rare earth magnets, including such as neodymium magnets, can achieve temperature ranges upwards of 900° C. to 1000° C.
Ferromagnetic, paramagnetic or diamagnetic Materials, such as again which can be integrated into the conductive plates, can include any of Iron (Fe) having a Curie temperature of 1043K (degrees Kelvin), Cobalt (Co) having a Curie temperature of 1400K, Nickel (Ni) having a Curie temperatures of 627K and Gadolinium (Gd) having a Curie temperature of 292K.
According to these teachings, Curie point, also called Curie Temperature, defines a temperature at which certain magnetic materials undergo a sharp change in their magnetic properties. In the case of rocks and minerals, remanent magnetism appears below the Curie point—about 570° C. (1,060° F.) for the common magnetic mineral magnetite. Below the Curie point—by non-limiting example, 770° C. (1,418° F.) for iron—atoms that behave as tiny magnets spontaneously align themselves in certain magnetic materials.
In ferromagnetic materials, such as pure iron, the atomic magnets are oriented within each microscopic region (domain) in the same direction, so that their magnetic fields reinforce each other. In antiferromagnetic materials, atomic magnets alternate in opposite directions, so that their magnetic fields cancel each other. In ferrimagnetic materials, the spontaneous arrangement is a combination of both patterns, usually involving two different magnetic atoms, so that only partial reinforcement of magnetic fields occurs.
Given the above, raising the temperature to the Curie point for any of the materials in these three classes entirely disrupts the various spontaneous arrangements, and only a weak kind of more general magnetic behaviour, called paramagnetism, remains. As is further known, one of the highest Curie points is 1,121° C. (2,050° F.) for cobalt. Temperature increases above the Curie point produce roughly similar patterns of decreasing paramagnetism in all three classes of materials such that, when these materials are cooled below their Curie points, magnetic atoms spontaneously realign so that the ferromagnetism, antiferromagnetism, or ferrimagnetism revives. As is further known, the antiferromagnetic Curie point is also referenced as the Neel temperature.
Other factors or variable controlling the temperature output can include the strength of the magnets or electromagnets which are incorporated into the plates, such as again by selected rare earth magnets having varying properties or, alternatively, by adjusting the factors associated with the use of electromagnets including an amount of current through the coils, adjusting the core ferromagnetic properties (again though material selection) or by adjusting the cold winding density around the associated core.
Other temperature adjustment variables can include modifying the size, number, location and orientation of the assemblies (elongated and plural magnet/electromagnet and alternative conductive plates). Multiple units or assemblies can also be stacked, tiered or otherwise ganged in order to multiply a given volume of conditioned fluid which is produced.
Additional variables can include varying the designing of the conductive disk packages, such as not limited varying a thickness, positioning or configuration of a blade or other fluid flow redirecting profile integrated into the conductive plates, as well as utilizing the varying material properties associated with different metals or alloys, such including ferromagnetic, paramagnetic and diamagnetic properties.
Having described my invention, other and additional preferred embodiments will become apparent to those skilled in the art to which it pertains, and without deviating from the scope of the appended claims. The detailed description and drawings are further understood to be supportive of the disclosure, the scope of which being defined by the claims. While some of the best modes and other embodiments for carrying out the claimed teachings have been described in detail, various alternative designs and embodiments exist for practicing the disclosure defined in the appended claims.
The foregoing disclosure is further understood as not intended to limit the present disclosure to the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure, whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is limited only by the claims.
In the foregoing specification, the disclosure has been described with reference to specific embodiments. However, as one skilled in the art will appreciate, various embodiments disclosed herein can be modified or otherwise implemented in various other ways without departing from the spirit and scope of the disclosure. Accordingly, this description is to be considered as illustrative and is for the purpose of teaching those skilled in the art the manner of making and using various embodiments of the disclosure. It is to be understood that the forms of disclosure herein shown and described are to be taken as representative embodiments. Equivalent elements, materials, processes or steps may be substituted for those representatively illustrated and described herein. Moreover, certain features of the disclosure may be utilized independently of the use of other features, all as would be apparent to one skilled in the art after having the benefit of this description of the disclosure. Expressions such as “including”, “comprising”, “incorporating”, “consisting of”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.
Further, various embodiments disclosed herein are to be taken in the illustrative and explanatory sense, and should in no way be construed as limiting of the present disclosure. All joinder references (e.g., attached, affixed, coupled, connected, and the like) are only used to aid the reader's understanding of the present disclosure, and may not create limitations, particularly as to the position, orientation, or use of the systems and/or methods disclosed herein. Therefore, joinder references, if any, are to be construed broadly. Moreover, such joinder references do not necessarily infer that two elements are directly connected to each other.
Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.
It will also be appreciated that one or more of the elements depicted in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed or rendered as inoperable in certain cases, as is useful in accordance with a particular application. Additionally, any signal hatches in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise specifically specified.
The present application claims the priority of U.S. Ser. No. 62/900,755 filed Sep. 16, 2019, the contents of which are incorporated by reference.
Number | Date | Country | |
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62900755 | Sep 2019 | US |