Electromagnetic heating fan

Abstract

The utility model relates to the technical field of fans, in particular to an electromagnetic heating fan. The electromagnetic heating fan comprises a shell comprising an air inlet and an air outlet; the electromagnetic part is arranged at the air inlet, and the electromagnetic part is configured to form an alternating magnetic field area in the shell; the fan assembly is arranged in the shell and located between the air inlet and the air outlet; the fan assembly comprises a magnetic conductive piece, and at least part of the magnetic conductive piece is located in the alternating magnetic field area. According to the electromagnetic heating fan provided by the embodiment of the invention, the magnetic conductive part on the fan assembly in the electromagnetic heating fan can generate heat by adopting an electromagnetic heating technology, and air flow driven by rotation of the fan assembly can exchange heat with the magnetic conductive part, so that the air flow is heated, and hot air is output. In this way, wind resistance caused by the fact that the heating piece is arranged in the air channel is reduced, and therefore the problems that the airflow speed of the fan is reduced and airflow noise is generated are solved.

Description

Technical Field

[0001] This application relates to the field of fan technology, specifically to an electromagnetic heating fan. Background Technology

[0002] As a common air circulation device, fans are widely used in indoor ventilation, ambient temperature regulation, and improvement of human comfort. Traditional fans propel airflow through the rotation of blades, but their air delivery temperature is limited by the ambient temperature. To meet users' heating needs in low-temperature environments, fans are combined with heating functions to achieve rapid heating by outputting hot air, thereby expanding the seasonal applicability of fans.

[0003] In related technologies, heating of airflow within an air duct is achieved by placing a heating element within the duct. For example, heating elements such as positive temperature coefficient thermistors (PTC thermistors), heat pipes, or ceramic heating elements are placed in the fan's outlet path. When the fan operates, airflow passes over the surface of the electrically powered heating element, and the air is heated through forced convection heat transfer before being output.

[0004] In the process of implementing the relevant technologies, at least the following technical problems were discovered:

[0005] Placing the heating element directly within the air duct obstructs airflow, significantly increasing air resistance. This not only reduces the fan's effective airflow distance and volume but also generates high-frequency noise due to intensified turbulence, which is particularly noticeable in quiet environments, such as at night. Furthermore, when switching to non-heating mode, although the heating element stops working, its physical structure remains in the air duct, continuing to obstruct airflow and reducing airflow speed during normal operation. In addition, the increased motor load due to high air resistance leads to higher energy consumption and a shorter lifespan for the equipment, resulting in a lower energy efficiency ratio. Utility Model Content

[0006] To address the aforementioned technical problems, this application provides an electromagnetic heating fan that reduces the increase in air resistance and noise caused by installing heating elements in the air duct, and improves the efficiency of the fan's hot air output.

[0007] In some embodiments, an electromagnetic heating fan is provided, comprising: a housing including an air inlet and an air outlet; an electromagnetic element disposed at the air inlet, the electromagnetic element being configured to form an alternating magnetic field region within the housing; and a fan assembly disposed within the housing and located between the air inlet and the air outlet; the fan assembly including a magnetic conductor, the magnetic conductor being at least partially located within the alternating magnetic field region.

[0008] The electromagnetic heating fan provided in this application utilizes electromagnetic heating technology. When the magnetic conductor of the fan assembly is placed in an alternating magnetic field region, it is electromagnetically heated, generating heat. The airflow driven by the rotation of the fan assembly exchanges heat with the magnetic conductor, thus heating the airflow and outputting hot air. This reduces the wind resistance caused by installing heating elements in the air duct, thereby reducing the problems of reduced airflow velocity and airflow noise.

[0009] In one possible implementation, the fan assembly further includes: a fan body configured to be driven to rotate; and a magnetic conductor disposed on the fan body.

[0010] In this embodiment, a magnetic conductor is provided on the fan body. As the fan body rotates, the magnetic conductor rotates, allowing it to enter the alternating magnetic field region, whereby the alternating magnetic field region electromagnetically heats the magnetic conductor, causing it to self-heat. Furthermore, airflow is driven to pass through the magnetic conductor, exchanging heat with it and heating the airflow.

[0011] In another possible implementation, the fan body includes at least one fan blade; the number of magnetic conductors is one or more, and the magnetic conductors are arranged one-to-one on the fan blade.

[0012] In this embodiment, by correspondingly arranging magnetic conductors on each fan blade, the magnetic conductor on each fan blade can be driven to the alternating magnetic field region, meaning that each magnetic conductor can be electromagnetically heated by the alternating magnetic field region. When there are multiple fan blades, continuous and overlapping heating can be achieved within the rotation cycle, thereby generating more heat and improving the hot air output efficiency of the electromagnetic heating fan.

[0013] In another possible implementation, the fan body includes any one of axial flow fan, centrifugal fan, sideflow fan, or diagonal flow fan.

[0014] In this embodiment, the availability of the electromagnetic heating fan is improved by providing a variety of selectable fan body types.

[0015] In another possible implementation, when the fan body is a centrifugal fan, the centrifugal fan includes a central region; an electromagnetic component is disposed in the central region; and an air inlet is disposed corresponding to the central region.

[0016] In this embodiment, by placing the electromagnetic component in the axial region, the airflow enters the axial region through the air inlet located in the centrifugal fan's axial region, flows through the electromagnetic component, and exchanges heat with it, thus simultaneously cooling the electromagnetic component and heating the airflow for the first time. Furthermore, the airflow flows through the fan assembly, where it exchanges heat with the magnetic component, achieving a second heating of the airflow. This reduces the wind resistance caused by placing traditional heating elements in the air duct, lowering noise and energy consumption.

[0017] In another possible implementation, the electromagnetic component includes a ventilation hole; the ventilation hole is connected to an air inlet.

[0018] In this embodiment, by setting ventilation holes, the wind resistance caused by the electromagnetic components is reduced, thereby reducing the resistance to airflow in the duct, increasing the airflow speed of the electromagnetic heating fan, and reducing the energy consumption of the electromagnetic heating fan.

[0019] In another possible implementation, the air inlet includes at least one vent, and the ventilation hole is connected to the vent.

[0020] In this embodiment, by constructing one or more ventilation holes at the air inlet to connect the ventilation holes with the ventilation holes, the wind resistance caused by the mismatch between the ventilation holes and the ventilation holes is reduced, the air outlet speed of the electromagnetic heating fan is increased, and the energy consumption of the electromagnetic heating fan is reduced.

[0021] In another possible implementation, the electromagnetic heating fan further includes a drive unit, which is connected to the fan assembly in a transmission manner, and the drive unit can controllably drive the fan assembly to rotate.

[0022] In this embodiment, the fan assembly can be driven to rotate by a driving component, thereby driving airflow during the rotation of the fan assembly. Furthermore, the magnetic conductor on the fan assembly can rotate synchronously, causing the magnetic conductor located outside the alternating magnetic field region to enter the alternating magnetic field region. This causes the magnetic conductor to generate heat, which is exchanged with the magnetic conductor as the airflow passes through it, thus heating the airflow and enabling the electromagnetic heating fan to output hot air.

[0023] In another possible implementation, the housing includes: a main body with an air outlet; a cover plate disposed on the main body, the cover plate and the main body forming a receiving cavity; the electromagnetic component and the fan assembly are both located within the receiving cavity; and the cover plate has an air inlet.

[0024] In this embodiment, a housing cavity capable of accommodating the electromagnetic component and the fan assembly is constructed by providing a main body and a cover plate. This, in turn, creates the air duct within the electromagnetic heating fan.

[0025] In another possible implementation, the electromagnetic component is mounted on the cover plate and located around the air inlet.

[0026] In this embodiment, by limiting the placement of the electromagnetic component, the airflow can be heated for the first time by exchanging heat with the electromagnetic component after entering the air duct through the air inlet, thereby increasing the heating rate of the airflow and achieving heat exchange with the electromagnetic component. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the air duct for a fan that uses a heat-generating component;

[0029] Figure 2 This is a first structural schematic diagram of an electromagnetic heating fan provided in an embodiment of this application;

[0030] Figure 3 for Figure 2 A structural schematic diagram from another perspective of the embodiment shown;

[0031] Figure 4 for Figure 2 The illustrated embodiment is a cross-sectional view along direction AA;

[0032] Figure 5 for Figure 2 A schematic diagram of the exploded structure of the electromagnetic heating fan in the embodiment shown;

[0033] Figure 6 This is a schematic diagram of the structure of the fan assembly provided in an embodiment of this application;

[0034] Figure 7 A second structural schematic diagram of an electromagnetic heating fan provided in an embodiment of this application;

[0035] Figure 8 for Figure 7 A cross-sectional view along the BB direction in the illustrated embodiment.

[0036] Figure label:

[0037] 1. Hot air fan; 11. Air duct; 12. Fan; 13. Heating element;

[0038] 200. Electromagnetic heating fan; 201. Housing; 2011. Air inlet; 2012. Air outlet; 2013. Main body; 2014. Cover plate; 202. Electromagnetic component; 203. Fan assembly; 2031. Magnetic conductor; 2032. Fan body; 204. Drive component; 205. Main control board. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the protection scope of this application.

[0040] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] Furthermore, in this application, directional terms such as "upper," "lower," "inner," and "outer" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0042] To facilitate understanding of the technical solution of this application, some concepts involved in this application will be explained below.

[0043] Figure 1 This is a schematic diagram of the air duct for a fan that uses a heat-generating component.

[0044] The following combination Figure 1 The background technology is explained.

[0045] See Figure 1 A fan 12 and a heating element 13 are installed in the air duct 11 of the hot air fan 1. The fan 12 is driven to rotate, driving airflow through the air inlet of the air duct 11 into the air duct, and then to the heating element 13 after passing through the fan 12. When the heating element 13 is energized, its surface heats up. As the airflow passes over the heating element 13, it exchanges heat with the surface of the heating element 13, thereby heating the airflow in the air duct. The heated airflow is then output through the air outlet of the air duct 11.

[0046] As airflow passes through the duct 11, it sequentially passes through the air inlet, fan 12, heating element 13, and air outlet of the duct 11. Because the heating element 13 is located within the duct 11, it increases the air resistance within the duct. When airflow passes over the heating element 13, the air resistance reduces the airflow velocity, thus lowering the fan's outlet speed. This also increases the load on the motor of the hot air fan 1, leading to increased energy consumption and a shortened lifespan for the equipment. When the fan-driven airflow velocity is high, the heating element 13 has a greater impact on the airflow velocity, and the increased turbulence as airflow passes over the heating element 13 generates high-frequency airflow noise.

[0047] Furthermore, since the heating element 13 is a single heat exchange point that heats the airflow, in order to increase the heating rate of the airflow, the surface area of ​​the heating element 13 is often increased to provide a higher heating speed for the airflow. This results in a larger volume of the heating element 13 and a greater wind resistance.

[0048] To address the aforementioned issues, this application provides an electromagnetic heating fan 200. By employing electromagnetic heating technology, the magnetic conductor 2031 achieves self-heating. When the fan assembly 203 rotates, the airflow driven by the fan assembly 203 exchanges heat with the magnetic conductor 2031, heating the airflow and thus outputting hot air. This reduces the wind resistance caused by installing a heating element within the air duct, thereby reducing the problems of reduced airflow velocity and noise. Furthermore, if the magnetic conductor 2031 is outside the alternating magnetic field region, when the fan assembly 203 rotates and drives the magnetic conductor 2031 into the alternating magnetic field region generated by the electromagnetic component 202, it is electromagnetically heated by the alternating magnetic field, achieving self-heating of the magnetic conductor 2031.

[0049] Figure 2 This is a first structural schematic diagram of an electromagnetic heating fan provided in an embodiment of this application. Figure 3 for Figure 2 A structural schematic diagram from another perspective of the embodiment shown. Figure 4 for Figure 2 The illustrated embodiment shows a cross-sectional view along direction AA. Figure 5 for Figure 2 The diagram shows an exploded view of the electromagnetic heating fan in the embodiment shown.

[0050] In some embodiments, combined with Figures 2 to 5 As shown, an electromagnetic heating fan 200 is provided, including: a housing 201, an electromagnetic component 202, and a fan assembly 203. The housing 201 includes an air inlet 2011 and an air outlet 2012. The electromagnetic component 202 is disposed in the air inlet 2011 and configured to form an alternating magnetic field region within the housing 201. The fan assembly 203 is disposed within the housing 201 and located between the air inlet 2011 and the air outlet 2012. The fan assembly 203 includes a magnetic conductor 2031, which is at least partially located within the alternating magnetic field region.

[0051] The electromagnetic heating fan 200 provided in this application embodiment uses a magnetically conductive element 2031 located in an alternating magnetic field region, which is electromagnetically heated to achieve self-heating. During the airflow driven by the rotation of the fan assembly 203, the airflow exchanges heat with the magnetically conductive element 2031, causing the electromagnetic heating fan 200 to output hot air. This reduces the air resistance caused by the heating element within the air duct of the electromagnetic heating fan 200, thereby reducing the problems of reduced airflow velocity and noise.

[0052] Furthermore, the electromagnetic component 202 contains resistance. Current flowing through this resistance generates heat, specifically Joule heating. Therefore, when the electromagnetic component 202 is energized, it generates heat, causing its surface to heat up. By placing the electromagnetic component 202 on one side of the air inlet 2011, the airflow can first pass through the electromagnetic component 202 and then through the magnetic conductor 2031 of the fan assembly 203. In this way, the airflow exchanges heat with the surface of the electromagnetic component 202 as it flows through it, achieving heat dissipation and providing an initial heating effect on the airflow. When the electromagnetic component 202 is not needed, it is de-energized, and no current flows through it. Therefore, its surface does not generate heat, and it does not affect the airflow temperature in normal airflow mode.

[0053] In related technologies, increasing the surface area of ​​the heating element is usually used to improve heat exchange efficiency, thereby increasing the heating efficiency of the airflow. Compared with the related technologies that use heating elements to heat the airflow in the duct, the embodiments of this application use electromagnetic heating to heat the airflow. The electromagnetic element 202 is often a small electromagnetic coil, and there are gaps between each turn of the electromagnetic coil, so it does not generate wind resistance to the airflow in the duct. This reduces the wind resistance encountered by the airflow when it flows through the duct and the problem of noise generation.

[0054] It is worth noting that in the normal air supply mode, if the electromagnetic component 202 is to be stopped, that is, if the electromagnetic component 202 is not needed to generate an alternating magnetic field, this can be achieved by de-energizing the electromagnetic component 202. This application does not limit the specific implementation method of stopping the operation of the electromagnetic component 202.

[0055] Specifically, in combination Figure 4 As shown, Figure 4 The middle arrow M indicates the direction of airflow. In hot air mode, the airflow M first enters the housing 201 through the air inlet 2011. As it flows past the electromagnetic component 202, it exchanges heat with the component, achieving the first heating of the airflow. Further, the airflow flows through the fan assembly 203. During rotation, the magnetic component 2031 in the fan assembly 203 enters the alternating magnetic field region. The alternating magnetic field region generates heat in the magnetic component 2031 through electromagnetic heating, achieving a second heating of the airflow as it flows past the magnetic component 2031 in the fan assembly 203. Thus, the airflow, after being heated twice, flows out of the housing 201 through the air outlet 2012, realizing the output of hot air from the electromagnetic heating fan 200.

[0056] In the normal air supply mode, i.e., when hot air is not required, the electromagnetic component 202 does not generate a magnetic field (i.e., the electromagnetic component 202 is not energized). Airflow first enters the housing 201 through the air inlet 2011. Since the electromagnetic component 202 is in the off state, it does not generate heat or an alternating magnetic field region, and the airflow is not disturbed as it passes through it. Furthermore, since there is no alternating magnetic field region within the housing 201, the magnetic conductor 2031 is not electromagnetically heated and therefore does not generate heat. This achieves the goal of the electromagnetic heating fan 200 outputting room temperature air.

[0057] It is worth noting that as long as the magnetic conductor 2031 of the fan assembly 203 is able to enter the alternating magnetic field region generated by the electromagnetic component 202 during the rotation of the fan assembly 203, so that the magnetic conductor 2031 receives electromagnetic heating from the alternating magnetic field, this application does not restrict the distance and position of the fan assembly 203 between the electromagnetic component 202 and the air outlet 2012.

[0058] In one implementation, the fan assembly 203 is located between the electromagnetic component 202 and the air outlet 2012. This allows the airflow to pass sequentially through the air inlet 2011, the electromagnetic component 202, the fan assembly 203, and the air outlet 2012, thereby heating the airflow twice and increasing the heating rate of the airflow.

[0059] In one implementation, combining Figure 5 As shown, the housing 201 includes a main body 2013 and a cover plate 2014. The main body 2013 has an air outlet 2012. The cover plate 2014 is disposed on the main body 2013, and the cover plate 2014 and the main body 2013 together form a receiving cavity. The electromagnetic component 202 and the fan assembly 203 are both located within the receiving cavity. The cover plate 2014 has an air inlet 2011.

[0060] In this embodiment, by providing a main body 2013 and a cover plate 2014, a receiving cavity capable of accommodating the electromagnetic component 202 and the fan assembly 203 is constructed. This creates an air duct in the electromagnetic heating fan 200. Specifically, the air duct sequentially includes an air inlet 2011 disposed on the cover plate 2014, the electromagnetic component 202, the fan assembly 203, and an air outlet 2012 disposed on the main body 2013.

[0061] In one implementation, the electromagnetic component 202 is disposed on the cover plate 2014 and located around the air inlet 2011.

[0062] In this embodiment, when the electromagnetic component 202 is energized, the current flowing through the resistance of the electromagnetic component 202 generates heat, causing the surface of the electromagnetic component 202 to heat up. By limiting the placement position of the electromagnetic component 202, the airflow can be heated by exchanging heat with the electromagnetic component 202 after entering the air duct through the air inlet 2011, thereby increasing the heating rate of the airflow and achieving heat dissipation of the electromagnetic component 202.

[0063] It should be understood that the electromagnetic component 202 can be glued to the cover plate 2014, or it can be fixed to the cover plate 2014 by means of screws, coils, etc. This application does not limit this.

[0064] For example, the electromagnetic component 202 is detachably mounted on the cover plate 2014. This facilitates the replacement of the electromagnetic component 202 in case of damage.

[0065] In one implementation, the electromagnetic component 202 includes an electromagnetic coil.

[0066] For example, the number of turns and other properties of the electromagnetic coil can be dynamically adjusted based on the distribution of the alternating magnetic field region. This ensures that the magnetic conductor 2031 can generate heat uniformly, preventing local overheating or efficiency degradation. By rationally designing the coil arrangement, even when there are multiple magnetic conductors 2031, each magnetic conductor 2031 experiences similar magnetic flux changes in its motion trajectory, ensuring consistent heating power.

[0067] In one implementation, the magnetic conductor 2031 is a conductor. Specifically, the magnetic conductor 2031 is made of metal. The material can be a special alloy to prevent deformation due to high-temperature softening or centrifugal force during high-speed rotation.

[0068] For example, the magnetic conductive component 2031 is an iron magnetic conductive component or a silicon steel magnetic conductive component.

[0069] The following explains the principle of self-heating of the magnetic conductive component 2031.

[0070] When hot air output is required, the electromagnetic coil is connected to a high-frequency alternating current, creating a high-frequency alternating magnetic field around it. Simultaneously, the fan motor drives the fan blades to rotate, and the magnetic conductor 2031 fixed to the fan blades rotates synchronously. As the magnetic conductor 2031 moves, it enters the alternating magnetic field region, generating eddy currents within it. Due to resistance (i.e., the Joule heating effect), the magnetic conductor 2031 itself heats up rapidly, becoming a direct heat source.

[0071] In this way, the fan assembly 203 achieves both heating and airflow functions. Specifically, the heating magnetic component 2031 is embedded in the fan assembly 203 (or a metal fan assembly 203 can be used directly as the magnetic component 2031). During rotation, it not only propels airflow but also rapidly dissipates the heat it generates through air convection. When cool air is drawn into the housing 201, it directly contacts the high-temperature magnetic component 2031 and absorbs heat as it flows over the surface of the high-speed rotating fan assembly 203, converting it into hot air that is ejected. Because the heating process is synchronized with the fan rotation, heat does not need to be transferred through additional heating elements (such as a metal heating plate), resulting in lower heat loss and increased airflow heating speed. Furthermore, by adjusting the coil current frequency or the fan assembly 203 speed, the heating power and heat dissipation intensity of the magnetic component 2031 can be dynamically controlled, making temperature rise more precise and efficient.

[0072] In one implementation, the electromagnetic component 202 is constructed in the form of a fan blade and is configured to be driven to rotate. That is, the fan assembly 203 includes a metal electromagnetic component 202 with a fan blade shape. In this way, it is possible to generate heat directly by electromagnetic heating of the metal fan blade without setting a separate fan blade, thereby reducing the manufacturing complexity of the fan assembly 203.

[0073] Figure 6 This is a schematic diagram of the fan assembly provided in an embodiment of this application. Only one fan blade on the fan body 2032 is shown; other fan blades are omitted.

[0074] In one implementation, combining Figure 6 As shown, the fan assembly 203 also includes a fan body 2032. The fan body 2032 is configured to be rotatable. A magnetic conductor 2031 is disposed on the fan body 2032.

[0075] In this embodiment, a magnetic conductor 2031 is provided on the fan body 2032 so that the magnetic conductor 2031 rotates during the rotation of the fan body 2032, thereby causing the magnetic conductor 2031 to enter the alternating magnetic field region. The alternating magnetic field region causes the magnetic conductor 2031 to generate heat through electromagnetic heating, so that the airflow exchanges heat with the magnetic conductor 2031 when it flows through it, thereby heating the airflow.

[0076] It should be understood that the connection between the fan body 2032 and the magnetic conductor 2031 can be achieved by bonding, welding or snap-fitting, as long as the fixed connection between the magnetic conductor 2031 and the fan body 2032 can be guaranteed during the rotation of the fan body 2032. This application does not impose any restrictions on this.

[0077] For example, the fan body 2032 has a mounting part, and the magnetic guide 2031 is fixedly disposed in the mounting part, or the magnetic guide 2031 is detachably connected to the mounting part.

[0078] For example, the mounting section includes a mounting groove, and the magnetic conductive element 2031 is bonded to the mounting groove.

[0079] For example, the mounting part includes a mounting hole, and the magnetic guide 2031 is snapped into the mounting hole.

[0080] In this way, a fixed connection is achieved between the magnetic conductor 2031 and the fan body 2032.

[0081] In one implementation, the fan body 2032 includes at least one fan blade. This allows the fan blade to drive airflow, creating an airflow.

[0082] For example, the number of fan blades is multiple. By setting multiple fan blades, the upper limit of the airflow velocity of the fan assembly 203 can be increased, allowing the fan speed to be adjusted as needed to produce a faster airflow. Specifically, multiple blades increase the contact area with the air, generating higher wind pressure and forcing the airflow to flow more concentratedly through the magnetic conductor 2031, thus improving heat exchange efficiency. Simultaneously, the blade angle design of the multiple blades reduces air turbulence and lowers energy loss.

[0083] For example, the number of magnetic conductors 2031 is one or more.

[0084] When there are multiple magnetic conductors 2031, the risk of overall failure due to fatigue or overheating of a single fan blade material is reduced. For example, if the magnetic conductor 2031 of a single fan blade temporarily fails, the magnetic conductors 2031 of the remaining fan blades can still maintain their basic functions.

[0085] For example, magnetic conductors 2031 are installed one-to-one on the fan blades.

[0086] With multiple fan blades and each fan blade having a corresponding magnetic element 2031, each magnetic element 2031 can enter the alternating magnetic field region and generate heat through electromagnetic heating. This generates more heat, improving the hot air output efficiency of the electromagnetic heating fan. With multiple fan blades, continuous and overlapping heating can be achieved within the rotation cycle. For example, if there are 5 fan blades, another magnetic element 2031 enters the high-efficiency electromagnetic heating region every 72° (360° / 5) of rotation in the magnetic field, resulting in more consistent heat generation and reducing the problem of intermittent temperature rise caused by a single fan blade.

[0087] Specifically, the heat-generating points of the multi-bladed fan assembly 203 are distributed over a larger circumferential range. The heat is evenly transferred to the airflow inside the housing 201 through rotation, reducing local high-temperature accumulation and avoiding the problem of overheating at the center of the traditional single heat-generating element.

[0088] For example, magnetic conductors 2031 are symmetrically arranged on the fan blades, such as one magnetic conductor 2031 every other fan blade. In this way, fan blades with magnetic conductors 2031 (such as odd-order fan blades) can disperse the resonant frequency during rotation, reducing vibration noise. Fan blades without magnetic conductors 2031 (such as even-order fan blades) can balance centrifugal force through symmetrical layout, reducing bearing wear.

[0089] In one implementation, the electromagnetic component 202 includes a ventilation hole. The ventilation hole is connected to the air inlet 2011.

[0090] In this embodiment, by providing ventilation holes, the wind resistance caused by the electromagnetic component 202 is reduced, thereby reducing the resistance to airflow in the duct, increasing the airflow speed of the electromagnetic heating fan 200, and reducing the energy consumption of the electromagnetic heating fan 200.

[0091] For example, when the electromagnetic component 202 includes an electromagnetic coil, there is a specific gap between each turn of the electromagnetic coil to form a ventilation hole.

[0092] In one implementation, the air inlet 2011 includes at least one ventilation hole, which is connected to the ventilation hole.

[0093] In this embodiment, by constructing one or more ventilation holes in the air inlet 2011, the ventilation holes and the ventilation holes are connected, thereby reducing the wind resistance caused by the mismatch between the ventilation holes and the ventilation holes, increasing the air outlet speed of the electromagnetic heating fan 200, and reducing the energy consumption of the electromagnetic heating fan 200.

[0094] For example, ventilation holes and air vents are arranged in a one-to-one correspondence. In this way, after the airflow passes through the air vents of the housing, it can directly enter the housing through the corresponding air vent, thereby further reducing the wind resistance generated by the electromagnetic component 202 and increasing the air outlet speed of the electromagnetic heating fan 200.

[0095] In one implementation, the electromagnetic heating fan 200 further includes a drive member 204. The drive member 204 is connected to the fan assembly 203 in a transmission manner, and the drive member 204 can controllably drive the fan assembly 203 to rotate.

[0096] In this embodiment, the drive component 204 can drive the fan assembly 203 to rotate, thereby driving airflow during the rotation of the fan assembly 203. Furthermore, the magnetic conductor 2031 on the fan assembly 203 can rotate synchronously to enter the alternating magnetic field region generated by the electromagnetic component 202, causing the magnetic conductor 2031 to generate heat. As the airflow passes through the magnetic conductor 2031, it exchanges heat with the magnetic conductor 2031, thereby heating the airflow and enabling the electromagnetic heating fan 200 to output hot air.

[0097] Specifically, the drive unit 204 includes an output shaft, the fan assembly 203 includes a fixed end, the output shaft is connected to the fixed end in a transmission manner, and the output shaft of the drive unit rotates to drive the fan assembly to rotate.

[0098] For example, the drive unit 204 includes a motor. The motor is drive-connected to the fan assembly 203.

[0099] For example, the motor is connected to the fan body 2032 of the fan assembly 203 via a drive connection. Specifically, a fixed end is provided on the fan body 2032.

[0100] In one implementation, the fan body 2032 includes any one of an axial fan, a centrifugal fan, a side-flow fan, or a diagonal-flow fan.

[0101] In this embodiment, the availability of the electromagnetic heating fan 200 is improved by providing a variety of selectable fan body 2032 types.

[0102] It should be understood that when using different types of fan bodies 2032, the housing 201 can be adapted to the different air duct designs of each type of fan body 2032, and this application does not impose any restrictions on this. Specifically, regardless of how the positions of the air inlet 2011 and the air outlet 2012 on the housing 201 are changed, it should be ensured that the airflow passes sequentially through the air inlet 2011, the electromagnetic component 202, the fan assembly 203, and the air outlet 2012 in the entire air duct. This allows for heat dissipation of the electromagnetic component 202 while simultaneously heating the airflow twice, thereby increasing the speed at which the electromagnetic heating fan 200 outputs hot air.

[0103] The characteristics of axial flow fans, centrifugal fans, sideflow fans, and diagonal flow fans are briefly introduced below.

[0104] Axial fans, with their rotating blades, propel air in a direction parallel to the axis of rotation. They typically consist of 3 to 5 angled blades and can generate a large air volume. Centrifugal fans, on the other hand, use the centrifugal force generated by the high-speed rotation of the impeller to draw air in axially and throw it radially out; the airflow direction is perpendicular to the axis of rotation, converting kinetic energy into higher static pressure. Sideflow fans (such as...) Figure 5 The fan assembly 203 shown is a sideflow fan, employing a long cylindrical impeller with blades arranged parallel to the axial direction. Air enters from one side of the impeller and exits from the other, flowing in a direction parallel to the impeller axis but diffused tangentially. The air pressure of a sideflow fan is between that of an axial fan and a centrifugal fan, enabling uniform airflow over a wider outlet surface. The impeller and duct of a diagonal flow fan feature a conical design, allowing air to enter axially and exit along a diagonal path at 30° to 60° to the axis of rotation. The blades of a diagonal flow fan typically have a three-dimensional curved surface shape, reducing turbulence losses by optimizing the airflow angle.

[0105] Figure 7 This is a second structural schematic diagram of an electromagnetic heating fan provided in an embodiment of this application. Figure 8 for Figure 7 The illustrated embodiment shows a cross-sectional view along the BB direction. The fan body 2032 includes a centrifugal fan. Specifically, Figure 7 and Figure 8 The electromagnetic heating fan 200 shown can be used in bathroom heater products to enable the bathroom heater product to output hot air.

[0106] For example, combined Figure 7 and Figure 8 As shown, when the fan body 2032 is a centrifugal fan, the centrifugal fan includes a central axis region. The electromagnetic component 202 is disposed in the central axis region; the air inlet 2011 is disposed corresponding to the central axis region.

[0107] In this embodiment, by placing the electromagnetic component 202 in the axial region, the airflow enters the axial region through the air inlet 2011 located in the axial region of the centrifugal fan, flows through the electromagnetic component 202, and exchanges heat with it, thus simultaneously cooling the electromagnetic component 202 and heating the airflow for the first time. Furthermore, the airflow flows through the fan assembly 203, where it exchanges heat with the magnetic conductor 2031, achieving a second heating of the airflow. This reduces the wind resistance caused by traditional heating elements in the air duct, lowering noise and energy consumption.

[0108] In one implementation, the electromagnetic heating fan 200 further includes a main control board 205. The main control board 205 is configured to receive operating commands and control the corresponding devices to operate based on the operating commands.

[0109] Specifically, the chip on the main control board 205 can communicate with electronic devices via a wireless network. For example, it can communicate with a mobile phone or remote control via Bluetooth or WLAN (Wireless Local Area Network, such as Wi-Fi). In this way, users can issue control commands on a mobile application or remote control, and the cloud processing module or the chip on the main control board 205 can derive corresponding operating commands based on the control commands and send the operating commands to the main control board 205 to control the electromagnetic heating fan 200.

[0110] In one implementation, the electromagnetic heating fan 200 further includes a temperature sensor located at the air outlet 2012 to detect the outlet air temperature. The temperature sensor is communicatively connected to the main control board 205 to transmit the outlet air temperature, thereby facilitating the regulation of the outlet air temperature of the electromagnetic heating fan 200 based on the outlet air temperature. Specifically, the outlet air temperature of the electromagnetic heating fan 200 can be regulated by adjusting the magnetic field strength generated by the electromagnetic component 202 and the rotational speed of the fan assembly.

[0111] It should be noted that those skilled in the art, upon considering the specification and practicing the application disclosed herein, will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0112] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An electromagnetic heating fan, characterized in that, include: The housing (201) includes an air inlet (2011) and an air outlet (2012); An electromagnetic component (202) is disposed at the air inlet (2011), and the electromagnetic component (202) is configured to form an alternating magnetic field region within the housing (201); A fan assembly (203) is disposed within the housing (201) and located between the air inlet (2011) and the air outlet (2012); The fan assembly (203) includes a magnetic conductor (2031) that is at least partially located within the alternating magnetic field region.

2. The electromagnetic heating fan according to claim 1, characterized in that, The fan assembly (203) also includes: The fan body (2032) is configured to be rotatable; the magnetic conductor (2031) is disposed on the fan body (2032).

3. The electromagnetic heating fan according to claim 2, characterized in that, The fan body (2032) includes at least one fan blade; The number of magnetic conductive elements (2031) is one or more, and the magnetic conductive elements (2031) are arranged one-to-one on the fan blade.

4. The electromagnetic heating fan according to claim 2, characterized in that, The fan body (2032) includes any one of axial flow fan, centrifugal fan, side flow fan or oblique flow fan.

5. The electromagnetic heating fan according to claim 4, characterized in that, In the case where the fan body (2032) is the centrifugal fan, the centrifugal fan includes a central axial region; The electromagnetic component (202) is disposed in the axial region; The air inlet (2011) is provided in the central region.

6. The electromagnetic heating fan according to claim 1, characterized in that, The electromagnetic component (202) includes a ventilation hole; the ventilation hole is connected to the air inlet (2011).

7. The electromagnetic heating fan according to claim 6, characterized in that, The air inlet (2011) includes at least one ventilation hole, and the ventilation hole is connected to the ventilation hole.

8. The electromagnetic heating fan according to claim 1, characterized in that, Also includes: The drive unit (204) is connected to the fan assembly (203) in a transmission manner, and the drive unit (204) can controllably drive the fan assembly (203) to rotate.

9. The electromagnetic heating fan according to claim 1, characterized in that, The housing (201) includes: The main body (2013) has the aforementioned air outlet (2012); A cover plate (2014) is disposed on the main body (2013), and the cover plate (2014) and the main body (2013) together form an accommodating cavity; the electromagnetic component (202) and the fan assembly (203) are both located in the accommodating cavity; the cover plate (2014) has an air inlet (2011).

10. The electromagnetic heating fan according to claim 9, characterized in that, The electromagnetic component (202) is disposed on the cover plate (2014) and located around the air inlet (2011).

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