A conical spinning self-pressurization friction heat generating hot water heating method and system

Abstract

This invention discloses a method and system for generating hot water using a conical spinning self-pressurizing frictional heating method, belonging to the technical field of hot water production equipment. The system includes a variable frequency drive motor, a conical spinning rotor, a medium storage chamber, a transition sealed bearing assembly, a central outlet pipe, a MU-type multi-U-segment integrated heat exchange and pressure stabilizing tank, a water storage chamber, a temperature detection component, and a main control module. The conical spinning rotor is a conical rotating body with a smaller front and larger rear. Multiple spirally tapered extrusion grooves are formed on the outer wall of the large-diameter tail section. The groove cross-section gradually narrows and becomes shallower from the outer ring to the center. The groove walls have staggered recessed serrated structures and track grooves for freely moving magnetically conductive particles. The medium storage chamber has a micro-arc circular ring structure, with the motor arranged in the central space. The rotor rotates immersed in the medium. The grooves compress the medium from the outer ring to the center, the recessed serrated edges break the laminar boundary layer to generate micro-vortex friction, and the magnetically conductive particles tumble under centrifugal force to generate vortex heating. The medium undergoes a triple synergistic effect to generate a high-temperature heat transfer medium. The storage chamber is fully enclosed in a heat-conducting metal shell, with an inlet preheating channel inside. Cold water first absorbs residual heat from the storage chamber through this preheating channel, achieving passive preheating. The MU-type tank has a spirally wound cold water pipe on its outer wall. The high-temperature refrigerant releases heat inside the tank, which is transferred through the tank wall to the water in the cold water pipe. The heated water then enters an insulated water tank. The cooling medium returns to the storage chamber via a return pipe, forming a closed-loop circulation. The system medium is physically isolated from the water, resulting in a simplified structure and dual heating capabilities, suitable for both domestic and commercial hot water production scenarios.

Description

Technical Field

[0001] This invention relates to the field of hot water production equipment technology, specifically to a hot water heating method and system that utilizes a rotating mechanical structure to extrude, shear, and rub a heat-conducting medium to generate heat, and then transfers the heat to a water storage chamber through a closed pipeline. Background Technology

[0002] Currently, the most common hot water production equipment on the market, classified by heating principle, mainly includes two types: resistance electric water heaters and air source heat pump water heaters.

[0003] The core heating component of a resistance-type electric water heater is the heating element, which is submerged in water. The surface temperature of the heating element is relatively high, and calcium and magnesium ions in the water easily precipitate and accumulate on the high-temperature surface of the element, forming a scale layer. This causes the heat exchange efficiency to gradually decrease over time. Furthermore, since the heating element is directly immersed in water, the metal wall may develop minor damage due to scale corrosion or thermal stress over long-term use. If the insulation layer fails, there is a safety hazard of current being conducted through the water.

[0004] Air source heat pump water heaters rely on a compressor to drive refrigerant circulation, absorbing heat from the ambient air. Their heating capacity is significantly affected by ambient temperature, with a marked decrease in heating capacity at low temperatures. Furthermore, heat pump systems include various components such as compressors, four-way valves, electronic expansion valves, and finned heat exchangers, resulting in complex piping connections, a relatively high overall failure rate, and high maintenance costs. Traditional heat pump water heaters use compressors with eccentric motion structures. Piston, rotary, or scroll compressors contain high-speed rotating or reciprocating eccentric components, generating unavoidable vibrations and noise during operation. These compressors also have numerous parts, are prone to wear, and have a high failure rate.

[0005] In the existing solutions mentioned above, there is still room for improvement in the degree of isolation between the heating element and the water, the simplification of the system structure, and the shortening of the heat transfer path. In particular, traditional electric water heaters rely on resistance wires for direct heating, which poses safety hazards due to the contact between water and electricity. Traditional heat pump water heaters rely on compressors to drive refrigerant circulation, resulting in complex structures, low-temperature performance degradation, and long-standing problems with vibration, noise, and mechanical wear caused by the eccentric motion of the compressor. There is an urgent need for a completely new hot water heating solution that completely eliminates resistance wires and eccentric compressors at the heating principle level, uses a purely rotating mechanical structure to directly generate heat through friction with the medium, and physically isolates the heating components from the water. Summary of the Invention

[0006] 3.1 Purpose of the Invention The purpose of this invention is to provide a method and system for generating hot water using a conical spinning self-pressurizing frictional heating method. This method generates heat by using a purely mechanical rotating structure to perform work on the heat-conducting medium, transferring the heat to the water storage chamber through a closed-loop circulation system, thus achieving physical isolation between the heating element and the water. Simultaneously, it simplifies the overall structure, reduces the types and number of easily damaged parts, and lowers manufacturing costs and maintenance difficulty. The pure rotational motion of the conical spinning rotor eliminates eccentric vibration at its physical source, and the concave sawtooth structure and magnetic particle track structure within the spinning groove significantly improve the efficiency of frictional heating, achieving highly efficient hot water production without the need for electric auxiliary heating or a compressor.

[0007] 3.2 Technical Solution This invention provides a method for generating hot water using a conical spinning self-pressurizing frictional heating system. The system comprises the following components: (I) Overall System Composition This system consists of a variable frequency drive motor, an axisymmetric conical spinning rotor, a sealed pressure medium storage chamber, a transition sealed bearing assembly, a central outlet pipeline, a MU-type multi-U-segment integrated heat exchange and pressure stabilizing tank, a return pipeline, an integrated water storage chamber, a temperature detection assembly, and a main control module.

[0008] (II) Specific structure of the conical spinning rotor The conical spinning rotor is the core power-generating and heat-generating component of this system. The rotor has an overall conical rotating structure that is smaller at the front and larger at the rear. Its front section is a tapered tip, and its rear section is a large-diameter conical tail. The rotor is manufactured using a one-piece molding process, and its center of mass coincides with the axis of rotation. After dynamic balancing verification, it does not generate eccentric inertial forces during rotation. The rotor has no pistons, connecting rods, crankshafts, or other reciprocating motion components.

[0009] The output spindle of the variable frequency drive motor is fixedly connected to the large-diameter tail end face of the conical spun rotor. When the motor is powered on, it drives the rotor to rotate in a pure circular motion around its own central axis.

[0010] The outer wall of the large-diameter tail section of the conical spinning rotor has multiple three-dimensional spiral gradient spinning grooves opened along the circumference.

[0011] The following describes in detail the specific structural features of the spiral gradient spin extrusion groove: The grooves are arranged along a helical direction on the outer wall of the rotor tail, with the helical direction consistent with the rotor's normal rotation direction. The grooves have a three-dimensional channel cross-section, possessing both width and depth. Taking one groove as an example, its cross-sectional width and depth are greatest at the outermost edge of the rotor tail; as it extends along the helical path from the outer edge towards the center, the cross-sectional width gradually narrows and the depth gradually decreases; near the rotor center, both the cross-sectional width and depth reach their minimum values. Multiple grooves are evenly distributed circumferentially on the outer wall of the rotor tail, with each groove exhibiting the same cross-sectional variation pattern.

[0012] A central flow channel is formed inside the rotor along its central axis. One end of this central flow channel is connected to the confluence area at the end of each spirally tapered extrusion groove on the outer wall of the rotor tail. The medium in each groove is pushed to its end by the extrusion and then flows into the central flow channel. The other end of the central flow channel leads to the contraction tip at the front end of the rotor.

[0013] (III) The recessed serrated structure and magnetic particle track structure within the spinning groove The spiral tapered extrusion groove has staggered recessed serrated structures on its groove wall along the spiral direction. These recessed serrated structures are essentially flush with the groove wall, forming tiny recessed areas on the surface rather than protruding from it. The recessed serrated structures are staggered both longitudinally and vertically along the spiral direction of the extrusion groove. When the rotor rotates, the medium flows along the spiral path within the groove. When it passes through the recessed serrated structures, the smooth laminar boundary layer is broken by the recessed areas, generating micro-vortices. The low-pressure area at the center of the vortex triggers the escape of dissolved gases in the medium, forming microbubbles. These microbubbles release localized high temperatures when they collapse in the subsequent high-pressure section. Simultaneously, the vortex itself intensifies the internal friction between medium molecules, more fully converting mechanical rotational kinetic energy into internal energy. The recessed serrated structures do not obstruct the overall flow direction of the medium; the overall tendency of the medium to advance towards the center along the spiral path remains unchanged. It is only disturbed and agitated when flowing through the recessed serrations, resulting in a significantly higher frictional heat generation efficiency than the smooth groove wall.

[0014] The spiral tapered spin extrusion groove also has at least one track groove on its wall. The track groove extends along the spiral direction of the spin extrusion groove and has a concave cross-section. The track groove contains freely moving magnetically conductive particles. The particle size of the magnetically conductive particles is smaller than the cross-sectional width of the track groove, providing them with space to move within it. When the rotor rotates, centrifugal force drives the magnetically conductive particles to tumble within the track groove. During tumbling, the magnetically conductive particles rub against the medium flowing through the track groove, and their irregular trajectories within the groove cause localized compression and shearing of the medium. When the medium contains trace amounts of conductive components, the tumbling motion of the magnetically conductive particles within the track groove also generates a weak eddy current effect within the medium. These eddies generate heat due to the Joule effect, and the heat is directly transferred to the surrounding medium.

[0015] The concave serrated structure generates a distributed friction enhancement effect along the entire spiral path of the spinning groove, while the magnetic particle track structure generates locally enhanced friction and eddy current heating effects in specific sections of the spinning groove. The combined effect of these two structures results in a higher final temperature reached by the medium at the same rotor speed compared to a simple smooth groove wall structure, or a lower rotor speed and lower motor power consumption required to reach the same temperature. In heating mode, this structure significantly improves the efficiency of converting mechanical rotational kinetic energy into the internal energy of the medium.

[0016] (iv) Medium storage chamber and medium The sealed pressure-bearing medium storage chamber is a fully sealed pressure-bearing cavity, formed by welding metal plates. The overall cavity has a slightly arc-shaped circular encircling structure—that is, the cavity shape is a rounded arc-shaped rotating body, not a perfect circle. The two side cavities are interconnected in an encircling shape, and the middle encloses a central space to accommodate the motor and rotor. The cavity is filled with a heat storage and heat conduction medium.

[0017] The variable frequency drive motor is integrally arranged in the central space of the medium storage chamber. The motor body is surrounded by two enclosing cavities, and the motor output main shaft is fixedly connected to the large-diameter tail end face of the conical spinning rotor. The heat generated by the motor during operation is directly absorbed by the medium in the surrounding cavities and is not dissipated outwards.

[0018] The heat storage and heat conduction medium is liquid at room temperature and has the physical property of increasing temperature when compressed and sheared. The medium simultaneously performs the following three functions: first, as a working fluid that is compressed to perform work, it receives the mechanical energy applied by the rotor; second, as a heat carrier, it carries the heat converted from mechanical energy to the heat exchange coil for release; third, as a lubricating and cooling medium for the rotor's moving parts and the motor bearings, when the rotor rotates in the liquid medium, a lubricating layer is formed between the rotor and the cavity wall by the liquid film of the medium, while the flow of the medium continuously carries away the heat generated by the motor's operation.

[0019] Since the medium itself has lubrication and cooling functions, this system does not require an additional independent lubrication system, oil-liquid separation structure, oil collection structure, or return oil pipeline. The medium circulation loop consists only of the main unit cavity, the MU-type tank, and the return pipeline.

[0020] The large-diameter tail of the conical spinning rotor is located inside the medium storage chamber and is completely enclosed in the liquid medium by the surrounding cavity. The outermost spiral tapering extrusion groove of the rotor tail is fully immersed in the liquid medium during rotor rotation, continuously drawing the medium into the groove.

[0021] (v) The working process of generating heat by spinning The following describes the heating process of this system in detail: When the variable frequency drive motor is powered on, it drives the conical spinning rotor to rotate around its central axis. The spirally tapered extrusion grooves on the outer wall of the rotor tail rotate synchronously with the rotor.

[0022] The groove is fully immersed in the liquid medium throughout the rotation process, and the liquid medium is continuously drawn into the groove channel. As the rotor continues to rotate, the medium in the groove is pushed along the spiral path from the outer ring of the rotor towards the center.

[0023] During the pushing process, the cross-sectional width and depth of the groove continuously narrow and become shallower. The volume occupied by the medium within the channel is continuously compressed and reduced, and the pressure of the medium gradually increases. Simultaneously, the fluid flows at high speed within the gradually narrowing channel, generating continuous shear friction with the groove wall. When the medium flows through the staggered, recessed serrated structure on the groove wall, the laminar boundary layer is broken, generating micro-eddies and localized friction hotspots. When the medium flows through the track groove region, centrifugal-driven magnetic particles tumble within the track groove, causing localized compression, shearing, and eddy current heating of the medium. The molecules within the medium undergo violent collisions due to the intense compression.

[0024] According to the principles of fluid mechanics and thermodynamics, when mechanical work is done on a fluid, part of the work is converted into the fluid's pressure energy, and the other part is dissipated through internal friction and converted into the fluid's internal energy, manifested as an increase in the medium's temperature. In this structure, the gradually narrowing design of the groove cross-section ensures that the medium continuously undergoes compression and shearing throughout the entire pushing stroke from the outer ring to the center. The concave sawtooth structure continuously generates micro-eddies and local friction hotspots throughout the pushing stroke, and the magnetic particle track structure generates eddy current heating enhancement in specific sections. The vast majority of the mechanical rotational kinetic energy is converted into the medium's internal energy. When the medium reaches the confluence region at the end of each groove, it is already in a high-temperature and high-pressure state, forming a high-temperature heat transfer medium.

[0025] The higher the rotor speed, the higher the compression and shearing rate of the grooves on the medium, the greater the eddy current intensity at the recessed serrations, the higher the tumbling frequency of the magnetically conductive particles, the faster the medium temperature rises, and the greater the system's heating power. There is a positive correlation between rotor speed and heating power.

[0026] (vi) High-temperature heat transfer medium outlet structure The following describes in detail the connection structure for the high-temperature heat medium to be discharged from the rotating rotor to the stationary pipeline: The high-temperature heat medium, after being heated and pressurized by spun extrusion, flows from the ends of each spiral gradually changing spun extrusion groove into the central guide channel inside the rotor, and flows along the central guide channel towards the contraction tip at the front end of the rotor.

[0027] The transition sealed bearing assembly is located at the tip of the rotor's contraction. This bearing assembly connects the rotating rotor to the stationary downstream piping. The inner ring of the bearing is fixedly connected to the tapered spun rotor and rotates synchronously with it. The outer ring of the bearing is fixedly mounted on a stationary base, remaining stationary. A hollow cavity is provided inside the bearing, allowing the high-temperature heat medium to pass through from the rotating side to the stationary side.

[0028] The end of the rotor's contraction tip is a non-rotating fixed section. This non-rotating fixed section is connected to the bearing outer ring housing and remains stationary. One end of the central outlet pipe is fixedly connected to this non-rotating fixed section. A sealing ring resistant to media and high temperature is provided at the connection point to ensure the sealing of the connection between the rotating and stationary parts and prevent media leakage from the connection gap.

[0029] The complete flow path of the high-temperature heat medium is as follows: it flows out from the central guide channel inside the rotor, passes through the hollow cavity inside the transition seal bearing assembly, passes through the interface between the rotating and stationary states, enters the stationary central outlet pipe, and is output outward along the central outlet pipe.

[0030] As the rotor continues to rotate and the spiral gradually expanding grooves continuously push the medium, the high-temperature heat medium flows out of the central outlet pipeline in a continuous and stable state. The entire compression, heating, and outlet process is continuous and uninterrupted, eliminating the need for a pressure control valve to control the start and stop of the medium output.

[0031] (vii) Heat exchange structure and water storage cavity The other end of the central outlet pipe is connected to the inlet end of the MU-type multi-U-section integrated heat exchange and pressure stabilizing tank. The MU-type tank has an overall M-plus-U combination meandering shape, with an internal labyrinthine multi-layer meandering pipe structure, divided into a main pipeline channel and a sandwiched pipeline channel. The two channels are completely isolated by metal pipe walls, and heat exchange occurs only through the pipe walls. A spirally wound cold water pipe is located circumferentially on the outer wall of the MU-type tank, closely adhering to the outer wall and covering the first half of the main pipeline—the section with the highest temperature after the high-temperature refrigerant enters the MU-type tank. The cold water pipe has a cold water inlet and a hot water outlet. External cold water enters the cold water pipe through the inlet, flows spirally along the outer wall of the MU-type tank, absorbs the heat released by the high-temperature refrigerant inside the MU-type tank, and then flows out from the hot water outlet into the insulated water tank. After the refrigerant inside the MU-type tank releases heat and cools down, it returns to the medium storage chamber through the bottom U-shaped pipe, the drying filter chamber, and the straight return pipeline, completing the heating cycle. The heat exchange area between the cold water pipe and the outer wall of the MU-type tank is provided by the labyrinthine multi-layer meandering pipe structure of the MU-type tank. During the spiral flow of cold water along the outer wall of the MU-type tank, it forms a counter-current heat exchange with the high-temperature refrigerant inside the pipe, resulting in high heat exchange efficiency.

[0032] (viii) Waste heat recovery structure of liquid storage chamber The sealed, pressurized medium storage chamber is completely enclosed by a layer of thermally conductive metal shell. This shell is made of a metal sheet with excellent thermal conductivity, and its inner wall is tightly fitted to the outer wall of the medium storage chamber, forming surface contact for heat conduction. A portion of the heat generated inside the medium storage chamber—including frictional heat from the rotation of the conical spinning rotor, compressive heat from the shearing of the medium, micro-eddy current frictional heat from the recessed serrated structure, eddy current heating from the magnetic particle track structure, and motor heat generated by the operation of the variable frequency drive motor—is conducted to this thermally conductive shell through the medium storage chamber wall.

[0033] The heat-conducting shell has an internal water inlet preheating channel. This water inlet preheating channel is a medium channel that connects one end to the cold water inlet of the equipment and the other end to the water supply inlet of the water storage chamber. The specific form of the water inlet preheating channel can be any one of the following: a serpentine channel groove opened inside the heat-conducting shell wall panel, a surrounding coil, or a jacketed cavity structure.

[0034] When the equipment is operating, external cold water first enters the inlet preheating channel. As the cold water flows through the heat-conducting shell, it exchanges heat with the inner wall of the shell. The heat transferred from the outer wall of the medium storage chamber to the heat-conducting shell—that is, the waste heat generated during the operation of the entire machine—is absorbed by the cold water flowing within the channel, thus completing preliminary preheating before entering the water storage chamber. The preheated water enters the water storage chamber through the water inlet and is further heated to the target temperature by the spiral cold water pipes on the outer wall of the MU-type tank.

[0035] Therefore, this system forms a dual heating structure: The first stage is passive heat absorption preheating: all the waste heat generated by the operation of the whole machine—including rotor rotation friction heat, medium compression shear heat, concave sawtooth micro eddy current friction heat, magnetic particle eddy current heating, and motor operation heat generation—is conducted to the metal heat-conducting shell through the medium storage chamber wall plate and absorbed by the cold water in the water inlet preheating channel, achieving zero-power passive preheating.

[0036] The second stage is active centralized heating: the conical spinning rotor compresses the medium, and the high-temperature heat medium generated by the concave sawtooth micro-eddy current friction, magnetic particle eddy current heating and shear friction enters the MU-type tank through the central outlet pipeline. Heat is released in the main pipeline of the MU-type tank, and the heat is transferred to the spiral cold water pipe on the outer wall through the tank wall to centrally heat the water flowing through the cold water pipe.

[0037] The heat lost from the outer wall of the medium storage chamber is recovered and utilized by the incoming water flow, which reduces the heat load of the main unit and improves the overall thermal efficiency of the machine.

[0038] (ix) Closed-loop medium reflux The outlet of the MU-type tank is connected to one end of a return pipeline. The other end of the return pipeline connects to the bottom of the medium storage chamber. The outlet of the return pipeline is located at the bottom of the storage chamber, with a distance between it and the conical spinning rotor, to avoid the return medium directly impacting the rotor and affecting its rotational stability.

[0039] After the heat medium releases heat within the MU-type tank, its temperature and pressure decrease, resulting in a low-temperature, low-pressure state. This cooled medium is then guided back through the return pipeline to the liquid pool at the bottom of the medium storage chamber, where it merges with the existing liquid medium. It is then re-entered by the spiral tapering extrusion groove at the tail of the rotor, entering the next round of extrusion, concave sawtooth micro-vortex friction, magnetic particle vortex heating, temperature rise, and heat exchange working cycle.

[0040] Thus, the medium continuously circulates within a closed loop consisting of the medium storage chamber, the central outlet pipeline, the MU-type tank, and the return pipeline. The medium is used in a completely closed loop, without contact with outside air, without conditions for volatilization, and without oxidative deterioration. Only a slight natural decay of molecular activity occurs under long-term high-shear conditions, and the medium itself is almost entirely consumed.

[0041] (x) Media maintenance port To meet the needs of initial filling at the factory, minor replenishment within the service life, and maintenance venting, the system is equipped with media filling and venting ports. Under normal use, these ports are fully sealed to ensure stable pressure within the cavity and prevent media leakage. The specific location of the port can be flexibly set in an available space at the top, bottom, front, or rear of the equipment, depending on the overall assembly layout.

[0042] (xi) Three-stage temperature measurement and multi-level heating control of the water storage cavity The upper, middle, and lower parts of the water storage cavity are each equipped with an independent temperature detection probe. The three probes collect water temperature data from the upper, middle, and lower layers of the water storage cavity, respectively, and transmit the data to the main control module in real time.

[0043] The main control module has multiple preset heating modes, each corresponding to a different motor speed range. The high speed mode is for rapid heating, the medium speed mode is for regular showering, and the low speed mode is for heat preservation.

[0044] The main control module receives data from three temperature probes in real time and comprehensively judges the water temperature stratification inside the storage chamber. The upper layer of water typically reaches a higher temperature first, followed by the middle layer, and the lower layer heats up last. When the water temperature collected by the temperature probe at the bottom of the storage chamber reaches a preset threshold, the main control module determines that the overall water temperature in the chamber has reached the target uniformity and immediately stops heating output or switches to low-power heat preservation mode. This judgment logic ensures that the entire chamber of water is heated uniformly, rather than stopping heating only when the upper layer of water reaches the target temperature.

[0045] The main control module adjusts the motor speed via frequency conversion, enabling continuous adjustment of heating power.

[0046] (xii) Rapid heating pipeline and dual-mode operation This system adds an independent rapid heating pipeline and a matching control valve group to the medium circulation loop.

[0047] The rapid heating pipeline is led out from the central outlet pipeline or near the inlet of the MU-type tank, and is independently laid out outside the conventional MU-type tank, with an independent control valve. This control valve is controlled by the main control module.

[0048] When the user selects the rapid heating mode, the control valve opens, and the high-temperature medium is introduced into the rapid heating pipeline. The cold water entering the pipeline is instantly heated as it flows through the outer wall of the rapid heating pipeline, producing hot water in a short time without waiting for the entire water chamber to heat up. The high-temperature water produced by the rapid heating pipeline is mixed with cold water through a mixing valve before being supplied to the user. The final water temperature is adjusted by the user using the mixing valve.

[0049] When the user turns off the rapid heating mode, the control valve closes, the medium switches back to the conventional MU-type tank circuit, and the equipment resumes thermal storage heating of the entire water chamber.

[0050] Therefore, this system has two operating modes: thermal storage heating and instantaneous rapid heating.

[0051] (xiii) Safety protection structure This system is equipped with a two-level security protection structure.

[0052] Level 1 Protection: Completely enclosed isolation of the core heating area. The conical spinning rotor, medium storage chamber, transition sealed bearing assembly, central outlet pipe, and the interior of the MU-type tank constitute a completely enclosed medium circulation space, physically isolated from the water in the storage chamber. The medium circulates within a closed loop, while the water exists independently within the chamber. Heat transfer between the two occurs only through the metal walls of the MU-type tank and the spiral chilled water pipes, without direct contact.

[0053] Second-level protection: Independent waterproof enclosure for electrical areas. The variable frequency drive motor, main control module, and all electrical wiring contacts are housed within an independent, sealed, waterproof, and insulated protective chamber. This protective chamber employs a waterproof and sealed structure design, physically isolating it from the water storage chamber and media pipelines. In extreme conditions such as potential pipeline leakage or damage to the water storage chamber, even if water spills outside the equipment, the electrical components remain protected by the protective chamber and will not come into contact with water.

[0054] (xiv) Flexible layout of the heating unit In this system, the heating unit, which consists of a variable frequency drive motor, a conical spinning rotor, a medium storage chamber, a transition sealed bearing assembly, and a central outlet pipeline, does not have a fixed assembly position inside the water storage chamber.

[0055] The specific installation location of the main unit is selected based on a comprehensive consideration of the internal spatial structure of the water storage chamber, the water circulation direction, heat exchange efficiency requirements, and ease of maintenance. The main unit can be installed in the middle, side, or lower unused area of ​​the water storage chamber. After selecting the installation location, the layout of the MU-type tank and cold water pipes can be arranged according to the location of the main unit, and the inlet and return ports can be matched and opened nearby based on the location of the main unit.

[0056] (xv) Integrated sealed inspection port An integrated sealed maintenance port is reserved in the low area of ​​the equipment casing near the outer side of the heating unit cavity.

[0057] During assembly, this port serves as the insertion and fixing channel for the heating unit, through which it is installed into the cavity and secured. Throughout the equipment's service life, this port functions as an access point for maintenance and repair, allowing personnel to remove the port cover to perform maintenance, inspection, or replacement of the main unit. This port also serves as a media filling and emptying port; initial media filling for new units, subsequent small-scale media replenishment, and emptying of existing media during in-depth maintenance are all accomplished through the same port.

[0058] Under normal use, the port is a fully sealed structure. A sealing gasket or sealing ring is provided between the cover plate and the port seat to ensure stable pressure bearing of the internal cavity and prevent media leakage. The specific location of the port can be flexibly set in the low area of ​​the front, rear, left, or right side of the equipment according to the overall assembly layout, with the principle of convenient operation.

[0059] (xvi) Independent external unit architecture The heating unit of this system can also be deployed independently externally. In this architecture, the heating unit is not installed inside the water storage chamber, but is independently packaged as a separate heating unit. The unit is connected to a remote water storage device via a medium circulation pipeline. The remote water storage device contains a MU-type tank and spiral cooling water pipes. The high-temperature medium is transported to the MU-type tank in the remote water storage device through the output pipeline to release heat. The cooled medium returns to the heating unit through the return pipeline and re-enters the spinning heat generation cycle.

[0060] (xvii) Explanation of other implementation forms of the heating unit It should be noted that in the above embodiments, the variable frequency drive motor is arranged in the central space of the medium storage cavity and is surrounded by the surrounding cavity. Within the scope of the inventive concept, the variable frequency drive motor can also be arranged in an independent cavity outside the medium storage cavity, and connected to the rotor through an output main shaft passing through the cavity. Both motor arrangement configurations are within the protection scope of this invention.

[0061] (18) Explanation of heating temperature range Under normal operating conditions, users can adjust the motor speed through the main control module to keep the outlet water temperature within the suitable range for daily bathing. Under extreme speed conditions, the continuous compression and shearing friction of the rotor on the medium—combined with the micro-eddy current enhancement effect of the concave sawtooth structure and the eddy current heating effect of the magnetic particle track structure—can further increase the medium temperature. The upper limit of the equipment's heating capacity is higher than that required for daily use. For daily use, operating in the low to medium speed range is sufficient to meet the needs, and the temperature control margin is large.

[0062] 3.3 Beneficial Effects Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects: Firstly, regarding the heating principle: The conical spinning rotor continuously squeezes, shears, and frictionally works the medium, directly converting mechanical rotational kinetic energy into the medium's heat energy, without relying on heating elements such as resistance wires or heating tubes. Heat exchange between the heating component and the water is indirect through the metal pipe wall, physically isolating the medium from the water and reducing the safety risks of water-electric contact at the structural level. The concave sawtooth structure generates a distributed micro-eddy current friction enhancement effect along the spinning groove, while the magnetic particle track structure generates an eddy current heating enhancement effect in specific sections. The synergistic effect of these two factors significantly improves the efficiency of converting mechanical energy into heat energy.

[0063] Secondly, regarding the heat exchange structure, the spiral cold water pipes on the outer wall of the MU-type tank directly absorb the heat released by the high-temperature refrigerant. This results in a short heat transfer path, a large heat exchange contact area, and a high efficiency in heat utilization. The storage chamber is fully enclosed in a metal heat-conducting shell, with an inlet preheating channel inside. Waste heat generated during operation is recovered and utilized by the inlet water flow. The cold water undergoes passive preheating before entering the main storage chamber, reducing the main unit's heating load and further decreasing overall energy consumption.

[0064] Third, in terms of structural simplification, the core moving parts consist of only two components: a variable frequency drive motor and a conical spun rotor. There are no reciprocating moving parts such as pistons, connecting rods, crankshafts, or valve plates. With fewer types and quantities of parts, the manufacturing process is correspondingly simplified, the probability of failure is reduced, and daily maintenance and repair costs are easier to control.

[0065] Fourth, regarding operational stability. The conical spinning rotor is an axisymmetric rotating body with its center of mass coinciding with the axis of rotation. During rotation, it does not generate eccentric inertial forces or reciprocating inertial impacts, resulting in low vibration amplitude and low noise levels. The recessed serrated structure is essentially flush with the groove wall, and the magnetically conductive particles are housed within the track grooves, all of which do not affect the rotor's dynamic balance characteristics.

[0066] Fifth, regarding the long-term performance of the medium. The medium is circulated within a fully enclosed loop, without contact with outside air, resulting in no volatilization loss or oxidation deterioration, and can be used for extended periods.

[0067] Sixth, in terms of operational flexibility. The unit can be deployed either internally or externally. It can operate in two heating modes: thermal storage heating or instantaneous rapid heating. The installation position of the heating unit can be flexibly adjusted according to the cavity space. The equipment casing has a reserved integrated sealed maintenance port, which can be reused for main unit installation, subsequent maintenance, and media filling and emptying operations.

[0068] Seventh, regarding the impact of scale buildup. The outer wall of the heat exchange pipe only contacts water to conduct heat, and its surface temperature is much lower than that of the electric heating tube. There are no hot spots, so scale is not easily deposited on the pipe wall surface, and the heat exchange efficiency can remain stable over a long period of time.

[0069] Eighth, regarding heating efficiency. The concave sawtooth structure breaks the laminar boundary layer, generating micro-eddies and localized friction hotspots. Magnetic particles are driven by centrifugal force to tumble within the track grooves, generating friction, compression, and eddy current heating. The synergistic effect of these two structures results in a higher final temperature reached by the medium at the same rotor speed, or a lower rotor speed and lower motor power consumption required to reach the same temperature.

[0070] Ninth, regarding safety protection: The core heating area is completely sealed and isolated, and the medium circulation space is physically isolated from the water. The electrical area is independently waterproofed and encapsulated, and the variable frequency drive motor and main control module are all housed in a sealed, waterproof, and insulated protective cavity, physically isolated from the water storage cavity and medium pipelines. Attached Figure Description

[0071] Figure 1. Overall schematic diagram of the conical spinning rotor fluid compression device; Figure 2. Overall schematic diagram of a fully submerged conical spin compressor in hot mode; Figure 3. Schematic diagram of MU-type multi-U-channel fluid pressure stabilizing tank; Figure 4. Schematic diagram of fluid cross-section at the end face of the helical rotor; Figure 5. Schematic diagram of a partial structure of the friction cutting groove in the spinning channel; Figure 6. Lateral schematic diagram of the helical rotor; Figure 7. Schematic diagram of a single-channel cold water preheat exchange system.

[0072] Explanation of reference numerals in the attached figures 1. Refrigerant power injection nozzle; 2. A pointed hat with a gathered design; 3. Conical refrigerant working chamber; 4. Conical spinning rotor; 5. Symmetrical liquid storage tanks on both sides; 6. Y-type return diversion piping; 7. Flange-type support bearing housing; 8. Conical refrigerant working chamber inlet; 9. Main drive motor; 10. Enclosed, obliquely oriented oil collection port; 11. MU-type multi-U-channel fluid pressure stabilizing tank; 12. Drying container; 13. Encircling S-shaped spinning groove; 14. Magnetic microparticles; 15. Track groove; 16. Increase the cutting point due to fluid friction; 17. The rear section of the spiral rotor rotates and holds the liquid. 18. Hot water tank; 19. Hot water; 20. Cold water jacket; 21. Cold water; 22. Hot and cold regulating valve. Detailed Implementation

[0073] The technical solution of the present invention will be further described below with reference to specific embodiments. The described embodiments are one possible implementation of the present invention, and not all implementations. Example

[0074] This embodiment provides a specific implementation method for a household conical spinning self-pressurizing friction-generated hot water heating system.

[0075] The conical spun rotor is made of high-strength alloy steel and CNC machined into a single piece, forming a conical rotating body that is smaller at the front and larger at the back. Six spirally tapered spun grooves are evenly distributed along the circumference of the outer wall of the large-diameter tail section of the rotor. The spiral direction of the grooves is consistent with the rotor's normal rotation direction. The cross-sectional width and depth of each groove gradually narrow and shallow from the outermost edge of the rotor tail towards the center. Each groove wall is machined with a staggered, spirally distributed recessed serrated structure, which is basically flush with the groove wall and staggered front-to-back and top-to-bottom. Each groove wall also has at least one track groove containing freely moving magnetically conductive particles. A central flow channel is drilled along the central axis inside the rotor. One end of this channel connects to the confluence area at the end of each groove, and the other end leads to the rotor's contracting tip. After machining, the rotor undergoes dynamic balancing verification, and the deviation between the center of mass and the rotation axis is controlled within the allowable range.

[0076] The medium storage chamber is welded from carbon steel or stainless steel plates and is a fully sealed pressure-bearing structure. The overall chamber has a slightly arc-shaped circular shape, with the two side chambers connected to each other, and a central space enclosing the motor and rotor. The chamber is filled with synthetic heat transfer oil as the heat storage and transfer medium. The medium filling amount is such that the large-diameter tail end of the rotor is completely submerged in the medium.

[0077] The variable frequency drive motor is installed entirely within the central space of the medium storage chamber, with the motor body surrounded by two enclosing chambers. The motor output shaft is coaxially and fixedly connected to the tail end face of the conical spinning rotor via a coupling. The main control module is installed in an independent waterproof and insulated protective chamber. The main control module has multiple preset speed levels, and the specific values ​​of each speed level can be adjusted and determined according to the actual water tank volume and heating requirements.

[0078] The outer surface of the medium storage chamber is completely covered by a layer of aluminum alloy or copper heat-conducting shell, with the inner wall of the shell tightly fitted to the outer wall of the storage chamber. A serpentine water inlet preheating channel is opened inside the heat-conducting shell, with one end of the channel connected to the cold water inlet of the equipment and the other end connected to the water supply port of the storage chamber.

[0079] The transition seal bearing assembly uses a double-row angular contact ball bearing. The inner ring of the bearing is heat-fitted onto the rotor's contraction tip shaft section and rotates with the rotor, while the outer ring is press-fitted into the stationary housing. One end of the central outlet pipe is connected to the non-rotating fixed section of the contraction tip via a flange, with a high-temperature and media-resistant sealing ring embedded in the flange mating surface. The other end of the central outlet pipe is connected to the inlet of the MU-type multi-U-section integrated heat exchange and pressure stabilizing tank.

[0080] The MU-type tank features a labyrinthine, multi-layered, meandering piping structure, divided into a main pipeline and an interlayer pipeline, completely isolated by a metal wall. A spirally wound cold water pipe runs circumferentially around the outer wall of the MU-type tank, covering the first half of the main pipeline. This cold water pipe has a cold water inlet and a hot water outlet. External cold water enters the cold water pipe through the inlet, flows spirally along the outer wall of the MU-type tank, absorbs heat released by the high-temperature refrigerant inside, and then flows out through the hot water outlet into the insulated water tank. The refrigerant inside the MU-type tank cools down after releasing heat and returns to the medium storage chamber via a bottom U-shaped pipe, a drying filter chamber, and a straight-through return pipeline.

[0081] One end of the return pipeline is connected to the U-shaped tube outlet at the bottom of the MU-type tank, and the other end passes through the wall plate of the medium storage chamber and is connected to the bottom of the chamber away from the rotor rotation area.

[0082] Temperature detection probes are installed at the upper, middle, and lower parts of the water storage chamber. The probe signal lines are connected to the main control module after being waterproofed and sealed. The main control module presets a water temperature threshold. When the temperature collected by the lower probe reaches the preset value, the main control module determines that the water in the entire chamber has been uniformly heated and then controls the motor to stop running or switch to the lowest speed heat preservation setting.

[0083] An integrated sealed maintenance port is provided on the lower side of the equipment casing, with the port size designed to allow the entire heating unit to enter and exit. A sealing gasket is installed between the port cover and the base, and the port is tightened with bolts for a seal.

[0084] The rapid heating pipeline originates from the central outlet pipeline, passes through an independent control valve, and is installed near the water inlet of the water storage chamber. The valve is electrically connected to the main control module, and the user can switch the rapid heating mode on and off via the control panel.

[0085] The heating unit can be flexibly installed in the middle, side, or lower empty area of ​​the water storage chamber, depending on the actual internal space. After selecting the installation location, the layout of the MU-type tank and cold water pipes follows the location of the unit, and the inlet and outlet are matched and opened nearby according to the location of the unit.

[0086] When the heating unit needs to be deployed independently externally, it can be packaged as an external unit and connected to the MU-type tank in the remote water storage device through a medium circulation pipeline.

[0087] During operation, cold water first enters the preheating channel within the heat-conducting shell, absorbing residual heat conducted from the outer wall of the storage chamber to complete preheating. The preheated water then enters the storage chamber, where it is further heated to the target temperature via a spiral cold water pipe on the outer wall of the MU-type tank. Within the spinning groove, the medium undergoes a triple synergistic effect of gradually varying cross-section compression, concave sawtooth micro-eddy current friction, and magnetically conductive microparticle eddy current heating, resulting in a significantly higher efficiency in converting mechanical energy to thermal energy compared to a single compression structure.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A method for generating hot water using a conical spinning self-pressurizing frictional heating system, characterized in that, Includes the following steps: A symmetrical conical spinning rotor is provided, with multiple spirally tapered spinning grooves opened circumferentially on the outer wall of its large-diameter tail section. The width and depth of the groove cross-section gradually narrow and become shallower from the outer ring of the rotor towards the center. The tail of the rotor is placed in a liquid heat storage and heat conduction medium. The rotor is driven to rotate by a motor, which rolls the medium from the outer ring into the groove and pushes it towards the center along the spiral path. The gradual narrowing of the groove cross section continuously compresses and shears the medium, so that the mechanical rotation kinetic energy is converted into the internal energy of the medium, generating a high-temperature heat medium. The high-temperature heat medium is drawn out from the central guide channel inside the rotor, and then transitions from the rotating side to the stationary side through the transition seal bearing assembly before entering the heat exchange device to heat the inlet water. The medium, after releasing heat and cooling down, is guided back to the storage chamber through the return pipeline and re-entrained by the rotor, forming a continuous circulation of the medium in a closed loop.

2. The method according to claim 1, characterized in that, The groove wall is provided with recessed sawtooth structures that are staggered along the spiral direction. When the medium flows through the recessed sawtooth, the laminar boundary layer is broken, generating micro-eddies and local friction hot spots.

3. The method according to claim 1 or 2, characterized in that, The groove wall is also provided with at least one track groove, and the track groove contains freely movable magnetic particles. When the rotor rotates, the centrifugal force drives the magnetic particles to tumble in the track groove, which generates local compression, shearing and eddy current heating on the medium.

4. The method according to claim 1, characterized in that, Temperature detection probes are installed at the upper, middle and lower parts of the water storage chamber. When the water temperature collected by the lower temperature probe reaches the preset threshold, it is determined that the water temperature of the entire chamber is uniform and meets the standard, and the heating is stopped or the chamber is switched to heat preservation mode.

5. The method according to claim 1, characterized in that, The heat storage and heat conduction medium simultaneously serves as a working medium for compression, a heat carrier, and a lubricant and cooling medium for moving parts, eliminating the need for an additional independent lubrication system.

6. A conical spinning self-pressurizing friction-generated hot water heating system, characterized in that, include: A variable frequency drive motor; A symmetrical conical spinning rotor is a cone-shaped rotating body with a smaller front and a larger rear. Multiple spiral gradually changing spinning grooves are opened on the outer wall of its large-diameter tail end along the circumference. The width and depth of the groove cross-section gradually narrow and become shallower from the outer ring of the rotor to the center. A central guide channel is opened inside the rotor along the central axis. A closed pressurized medium storage chamber is filled with a heat storage and heat conduction medium, and the large-diameter tail end of the rotor is arranged in the liquid medium in the storage chamber. A transition seal bearing assembly is located at the tip of the rotor's retraction and has a hollow cavity inside for the medium to pass through. The MU-type multi-U-segment integrated heat exchange and pressure stabilizing tank has its inlet end connected to the rotor through a central outlet pipe, and the outer wall of the tank is equipped with a spirally wound cold water pipe. A return pipeline, one end of which is connected to the outlet of the MU-type tank, and the other end is connected to the inside of the medium storage chamber; A water storage chamber, with temperature detection probes installed in its upper, middle and lower parts respectively; A main control module receives temperature data from each temperature detection probe and adjusts the speed of the variable frequency drive motor.

7. The system according to claim 6, characterized in that, The groove wall is provided with recessed serrated structures that are staggered along the spiral direction, and the recessed serrated structures are basically flush with the groove wall.

8. The system according to claim 6 or 7, characterized in that, The groove wall is also provided with at least one track groove, and the track groove contains freely movable magnetic microparticles.

9. The system according to claim 6, characterized in that, The medium storage cavity has a micro-arc circular ring structure, with the two side cavities connected to each other. The center encloses a central space for accommodating the motor and rotor. The variable frequency drive motor is arranged in this central space, and the motor body is surrounded by the two ring cavities.

10. The system according to claim 6, characterized in that, The heat storage and heat conduction medium simultaneously serves as a working medium for compression, a heat carrier, and a lubricant and cooling medium for moving parts; the system does not have an independent lubrication system.

11. The system according to claim 6, characterized in that, The medium storage chamber is completely covered by a metal heat-conducting shell, with the inner wall of the shell tightly attached to the outer wall of the storage chamber, and a water inlet preheating channel is provided inside the heat-conducting shell.

12. The system according to claim 6, characterized in that, The system also includes an independent rapid heating pipeline and a matching control valve group. The rapid heating pipeline is led out from the high-temperature heat medium output end. When the control valve is opened, the high-temperature medium is introduced into the rapid heating pipeline to perform instantaneous heat exchange on the incoming water.

13. The system according to claim 6, characterized in that, The system is equipped with a two-level safety protection structure: the first level is the physical isolation between the medium circulation space and the water body; the second level is that the variable frequency drive motor and the main control module are set in an independent, sealed, waterproof and insulated protective cavity.

14. The system according to claim 6, characterized in that, An integrated sealed maintenance port is reserved in the low area on the outer side of the heating unit cavity near the equipment casing. This port is used for main unit installation, subsequent maintenance, and medium filling and emptying operations.

15. The system according to claim 6, characterized in that, The heating unit can be independently packaged as an external heating unit and connected to the MU-type tank in a remote water storage device through a medium circulation pipeline.

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