Warm air blower and control method of warm air blower

Abstract

The fan heater comprises a shell, a coil assembly, a heating body, a power source assembly and a wind wheel, the shell is provided with an air inlet, an air outlet and an air flue space communicating the air inlet with the air outlet, the coil assembly is arranged in the shell, and the heating body, the power source assembly and the wind wheel are all arranged in the air flue space. The power source assembly is electrically connected with the electromagnetic coil and can control the heating power of the heating body and / or the rotating speed of the wind wheel according to the detected air temperature. Therefore, the heating body and the power supply assembly are cooled by the wind wheel at the same time, the temperature of hot air output by the fan heater can be increased, and when the fan heater has the problem of abnormal heat dissipation, the power supply assembly can regulate and control the heating power of the heating body and / or the rotating speed of the wind wheel in time, so that the risk that the fan heater is locally overheated is reduced, and the service life of the fan heater is prolonged. Therefore, the use safety of the fan heater is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a fan heater and a control method of the fan heater. BACKGROUND

[0002] The fan heater is a kind of heater, and the fan heater can rapidly increase room temperature through convection heating, and has the advantages of small size and light weight, and is particularly suitable for small space heating in families, offices and the like.

[0003] In the related art, when the fan heater has abnormal heat dissipation, the power assembly cannot timely regulate the working state of the fan heater, which leads to the problem that the power assembly is prone to overheating, thereby causing a safety hazard of the fan heater. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a fan heater, wherein the power assembly in the fan heater can timely regulate the heating power of the heating body and / or the rotating speed of the fan wheel, thereby improving the use safety of the fan heater.

[0005] The fan heater according to the embodiments of the present application comprises: a housing, the housing is provided with an air inlet and an air outlet, and the housing is provided with a wind channel space communicating with the air inlet and the air outlet; a coil assembly, the coil assembly is arranged in the housing, and the coil assembly comprises an electromagnetic coil for generating a magnetic field; a heating body, the heating body is arranged in the wind channel space, and the heating body is configured to heat under the action of the magnetic field; a power assembly, the power assembly is arranged in the wind channel space, and the power assembly is electrically connected with the electromagnetic coil; a fan wheel, the fan wheel is arranged in the wind channel space; wherein the power assembly is configured to control the heating power of the heating body and / or the rotating speed of the fan wheel according to the detected air temperature.

[0006] The fan heater according to the embodiments of the present application can simultaneously dissipate heat from the heating body and the power assembly by the fan wheel, which is conducive to improving the temperature of the hot air output by the fan heater, and when there is an abnormal heat dissipation problem in the fan heater, the power assembly can timely regulate the heating power of the heating body and / or the rotating speed of the fan wheel to reduce the risk of local overheating of the fan heater, thereby improving the use safety of the fan heater, and the structure of the fan heater of the present application is simple, which is conducive to improving the processing and production efficiency of the fan heater and reducing the production cost.

[0007] According to some embodiments of the present application, the power assembly is located on the air outlet side of the fan wheel.

[0008] According to some embodiments of the present application, the fan wheel is a centrifugal fan wheel, and the power assembly is located on the radial outer side of the fan wheel.

[0009] According to some embodiments of the present application, the power supply component is located on a side of the heat generating body facing the air inlet.

[0010] According to some embodiments of the present application, in the axial direction of the fan wheel, a part of the fan wheel is located inside the heat generating body, and another part of the fan wheel is located outside the heat generating body.

[0011] According to some embodiments of the present application, the part of the fan wheel located outside the heat generating body is arranged in radial direction opposite to the power supply component.

[0012] According to some embodiments of the present application, the shell is provided with a heat dissipation area, which is in communication with the air duct space, and the heat dissipation area is arranged corresponding to the power supply component so that at least part of the air flowing through the power supply component is discharged from the heat dissipation area.

[0013] According to some embodiments of the present application, in the radial direction of the fan wheel, the heat dissipation area and the power supply component are arranged opposite to each other.

[0014] According to some embodiments of the present application, in the axial direction of the fan wheel, the air inlet is opposite to the air outlet, and the heat dissipation area is located below the rotation axis of the fan wheel.

[0015] According to some embodiments of the present application, the power supply component is provided with a heat dissipation fin.

[0016] According to some embodiments of the present application, the power supply component further comprises a circuit board and components, and the components are located on a side of the circuit board facing the air inlet.

[0017] According to some embodiments of the present application, the power supply component comprises a temperature detector for detecting temperature and a controller, the controller is electrically connected with the temperature detector and the electromagnetic coil respectively, and the controller is configured to reduce the heating power of the heat generating body and / or increase the rotation speed of the fan wheel when determining that the detected temperature of the temperature detector is greater than a set temperature.

[0018] According to some embodiments of the present application, the temperature detector is configured as a thermistor, and the power supply component further comprises an IGBT, and the thermistor is arranged adjacent to the IGBT.

[0019] According to some embodiments of the present application, the fan heater further comprises a support, and the shell is rotatably arranged on the support to adjust the air outlet direction.

[0020] The second object of the present application is to provide a control method of a fan heater.

[0021] The control method of the fan heater according to the embodiment of the present application, which is the fan heater described above, comprises: controlling the fan wheel to run so that air passes through the power supply assembly and the heating body; detecting the air temperature; and when the detected temperature is higher than the set temperature, reducing the heating power of the heating body and / or increasing the rotating speed of the fan wheel.

[0022] The control method of the fan heater according to the embodiment of the present application, by causing the power supply assembly to detect the air temperature and determine whether the detected temperature is higher than the set temperature, is advantageous to timely adjust the heating power of the heating body and / or the rotating speed of the fan wheel when the fan heater overheats, is advantageous to reduce the security risks of the fan heater due to overheating, and improves the use safety of the fan heater.

[0023] According to some embodiments of the present application, the control method further comprises: when the detected temperature is lower than the set temperature, controlling the heating body to maintain the current heating power, and / or controlling the fan wheel to maintain the current rotating speed.

[0024] According to some embodiments of the present application, when the detected temperature is higher than the set temperature, reducing the heating power of the heating body further comprises: after the heating power is reduced, continuing to determine whether the detected temperature is greater than the set temperature at a set time interval, if it is still higher than the set temperature, continuing to reduce the heating power of the heating body, and repeating this until the detected temperature is lower than the set temperature or the heating power is lower than the set power.

[0025] According to some embodiments of the present application, when the number of times of reducing the heating power of the heating body is greater than a set number of times, an alarm signal is issued and / or the fan heater is controlled to stop running.

[0026] According to some embodiments of the present application, the set number of times is in the range of 3-5 times.

[0027] According to some embodiments of the present application, the power supply assembly is controlled to detect the air temperature in real time.

[0028] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0030] Figure 1 Partial structure explosion of the fan heater according to the embodiment of the present application Figure 1 ;

[0031] Figure 2This is a partial structural diagram of the heater described in an embodiment of the present invention;

[0032] Figure 3 for Figure 2 Sectional view at AA;

[0033] Figure 4 This is a schematic diagram showing the positions of the wind turbine and power supply components according to an embodiment of the present invention. Figure 1 ;

[0034] Figure 5 This is a schematic diagram showing the positions of the wind turbine and power supply components according to an embodiment of the present invention. Figure 2 ;

[0035] Figure 6 for Figure 5 Sectional view at BB;

[0036] Figure 7 This is a schematic diagram of the structure of the housing after the power supply component is assembled inside the housing according to an embodiment of the present invention;

[0037] Figure 8 for Figure 7 Sectional view at CC;

[0038] Figure 9 This is a schematic diagram showing the assembly position of the power supply component and the housing according to an embodiment of the present invention;

[0039] Figure 10 The partial structural explosion of the heater described in the embodiment of the present invention Figure 2 ;

[0040] Figure 11 This is a partial structural cross-section of the heater described in an embodiment of the present invention. Figure 1 ;

[0041] Figure 12 This is a schematic diagram of air flow in a heater according to an embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram of the assembly of the power supply component and the magnetic stripe bracket according to an embodiment of the present invention. Figure 1 ;

[0043] Figure 14 This is a schematic diagram of the assembly of the power supply component and the magnetic stripe bracket according to an embodiment of the present invention. Figure 2 ;

[0044] Figure 15 This is a schematic diagram showing the positions of the power supply assembly and the wind turbine according to an embodiment of the present invention. Figure 3 ;

[0045] Figure 16 This is a flowchart of the control method for the heater according to an embodiment of the present invention;

[0046] Figure 17 The logic block diagram of the control method for the heater described in the embodiments of the present invention. Figure 1 ;

[0047] Figure 18 The logic block diagram of the control method for the heater described in the embodiments of the present invention. Figure 2 ;

[0048] Figure 19 This is a partial structural diagram of the heater described in an embodiment of the present invention. Figure 2 ;

[0049] Figure 20 This is a schematic diagram of the wind turbine structure according to an embodiment of the present invention;

[0050] Figure 21 This is a schematic diagram of the structure of the heater described in an embodiment of the present invention.

[0051] Figure label:

[0052] 100 heaters

[0053] Housing 110, air inlet 111, air outlet 112, air duct space 113, housing body 114, air inlet grille 115, heat dissipation area 116, through hole 1161, mounting fitting part 117.

[0054] Coil support 121, winding protrusion 1211, magnetic strip support 122, current guiding structure 1221

[0055] Heating element 130

[0056] Power supply assembly 140, Component 141

[0057] Circuit board 142, mounting part 1421, first side 1422, second side 1423, signal port 1424, power input interface 1425, heat sink 143.

[0058] Wind turbine 150, clearance space 151

[0059] Drive motor 210, bracket 220, base 230. Detailed Implementation

[0060] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0061] In the description of this invention, it should be understood that the terms "center," "inner," "outer," "axial," "radial," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0062] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] The following is for reference. Figures 1-15 as well as Figures 19-21 A heater 100 according to an embodiment of the present invention is described.

[0064] Combination Figure 3 and Figure 11 According to an embodiment of the present invention, a heater 100 includes: a housing 110, the housing 110 having an air inlet 111 and an air outlet 112, and an air duct space 113 communicating with the air inlet 111 and the air outlet 112 inside the housing 110, wherein external air can enter the air duct space 113 through the air inlet 111 and further flow out of the air duct space 113 through the air outlet 112.

[0065] It should be noted that "outdoor air" refers to the air outside the heater 100, which can be the air in the indoor space.

[0066] The heater 100 also includes a coil assembly and a heating element 130. The coil assembly is located in the housing 110 and includes an electromagnetic coil for generating a magnetic field. The heating element 130 is located in the air duct space 113 and is configured to generate heat under the action of a magnetic field.

[0067] Electromagnetic induction heating can be achieved through the cooperation of electromagnetic coil and heating element 130. Since heating element 130 is set in air duct space 113, heating element 130 can heat the air entering air duct space 113 so that heater 100 can output hot air. The output hot air can heat the external environment to increase the temperature of the external environment, thereby improving the comfort of the external environment. In addition, electromagnetic induction heating has the advantages of uniform heating and fast response, which helps to improve the heating efficiency of heater 100.

[0068] It should be noted that "external environment" can be understood as indoor environment.

[0069] Combination Figures 1-3 The heater 100 also includes a power supply assembly 140 and a fan wheel 150. The power supply assembly 140 is disposed in the air duct space 113 and is electrically connected to an electromagnetic coil. The fan wheel 150 is disposed in the air duct space 113 to guide air introduced from the air inlet 111 to the air outlet 112. The power supply assembly 140 is configured to control the heating power of the heating element 130 and / or the rotational speed of the fan wheel 150 according to the detected air temperature.

[0070] The impeller 150 can drive the air in the air duct space 113 from the air inlet 111 to the air outlet 112. Since the power supply component 140 and the heating element 130 are both located in the air duct space 113, when the air flows in the air duct space 113, the air can simultaneously flow through the power supply component 140 and the heating element 130. The air flowing through the heating element 130 is heated by the heating element 130 to increase the air temperature. In addition, the power supply component 140 generates heat when it is working. Therefore, when the air flows through the power supply component 140, the air can dissipate heat from the power supply component 140 to reduce the temperature of the power supply component 140, reduce the risk of overheating of the power supply component 140, and help ensure the normal operation of the power supply component 140. At the same time, it is also helpful to further increase the temperature of the hot air output by the heater 100 and improve the heating efficiency of the heater 100.

[0071] Furthermore, since the air driven by the impeller 150 can simultaneously dissipate heat from the heating element 130 and the power supply component 140, when the impeller 150 or the heating element 130 malfunctions, for example, if the impeller 150 is blocked, causing it to be unable to rotate or its speed to decrease, or if the heat generated by the heating element 130 and the power supply component 140 cannot be dissipated in time, resulting in excessively high temperatures near the heating element 130 and the power supply component 140, the power supply component 140 can adjust the heating power of the heating element 130 and / or the speed of the impeller 150 in a timely manner based on the detected air temperature. For example, when excessively high air temperature is detected, the power supply component 140 can control the heating element 130 to reduce its heating power or control the heating element 130 to stop operating, or the power supply component 140 can control the impeller 150 to increase its speed, or the power supply component 140 can control the heating element 130 to reduce its heating power while increasing the speed of the impeller 150, thereby reducing the risk of local overheating of the heater 100 and improving the safety of the heater 100.

[0072] Optionally, the power supply assembly 140 may have the function of detecting air temperature, or the air temperature may be detected by separately setting a temperature sensor that is communicatively connected to the power supply assembly 140 at a location adjacent to the power supply assembly 140. It is understood that the specific method of detecting air temperature can be determined according to actual production requirements, and no specific limitation is made here.

[0073] In related technologies, when abnormal heat dissipation occurs inside the heater, the power supply component cannot timely regulate the working status of the heating element or the fan wheel, which can easily lead to excessively high local temperatures in the heater, affecting the safety and service life of the heater.

[0074] This application enables the impeller 150 to simultaneously dissipate heat from the heating element 130 and the power supply component 140, which helps to increase the temperature of the hot air output by the heater 100. Furthermore, when an abnormal heat dissipation problem occurs within the heater 100, the power supply component 140 can promptly adjust the heating power of the heating element 130 and / or the rotation speed of the impeller 150 to reduce the risk of local overheating of the heater 100, thereby improving the safety of the heater 100. In addition, the heater 100 of this application has a simple structure, which helps to improve the processing and production efficiency of the heater 100 and reduce production costs.

[0075] Combination Figures 1-3In some embodiments of the present invention, the housing 110 includes a housing body 114, on which an air inlet 111, an air outlet 112, and an air duct space 113 connecting the air inlet 111 and the air outlet 112 are respectively formed. The heating element 130, the power supply component 140, and the impeller 150 can all be arranged inside the housing body 114. A drive motor 210 is also provided inside the housing body 114. When the drive motor 210 runs, it can drive the impeller 150 to rotate, and the impeller 150 can drive the airflow to flow in the air duct space 113.

[0076] In addition, the shell body 114 can also provide positioning support for the drive motor 210 and the heating element 130, which helps to improve the structural stability of the heater 100. Furthermore, by placing the drive motor 210 and the heating element 130 inside the shell body 114, the shell body 114 can protect the drive motor 210 and other structures, which helps to reduce the risk of damage to the drive motor 210 and other structures, thereby helping to extend the service life of the heater 100.

[0077] In some embodiments, when the heater 100 is actually in use, the air inlet 111 is located on the rear side of the housing 110 and the air outlet 112 is located on the front side of the housing 110. That is, the heater 100 takes in air from the rear side and outputs airflow forward.

[0078] Combination Figures 1-3 In some embodiments of the present invention, an air inlet screen 115 is provided at the air inlet 111 of the shell body 114. The air inlet screen 115 is detachably provided on the shell body 114 so that the user can remove the air inlet screen 115 for cleaning, and at the same time facilitate the user to clean and maintain the structure inside the shell body 114.

[0079] In some embodiments of the present invention, an air outlet mesh cover is provided on the side of the shell body 114 where the air outlet 112 is formed, combined with... Figures 1-3 The air outlet grille can be integrally formed with the shell body 114, which helps to simplify the assembly process of the heater 100 and improve the production efficiency of the heater 100; or the air outlet grille can be separately set from the shell body 114, so that users can remove the air outlet grille for cleaning.

[0080] Therefore, by setting up the air inlet screen 115 and the air outlet screen, the risk of debris entering the housing 110 is reduced, which helps to improve the service life of the heater 100 and also improves the aesthetics of the heater 100.

[0081] Combination Figures 1-3 In some embodiments of the present invention, the coil assembly further includes a coil support 121, the electromagnetic coil is fixed to the coil support 121, and the coil support 121 is formed in a ring shape and is sleeved onto the heating element 130.

[0082] The coil support 121 is correspondingly arranged with the heating element 130 and is located outside the heating element 130 in the radial direction of the impeller 150. This helps to ensure the effective cooperation between the electromagnetic coil and the heating element 130. When the electromagnetic coil is energized, it can generate a magnetic field, which enables the heating element 130 to achieve electromagnetic induction heating, thereby providing an efficient way to heat the air. Furthermore, the coil support 121 can provide stable support for the electromagnetic coil, which helps to improve the assembly stability of the electromagnetic coil.

[0083] Combination Figures 1-3 In some specific embodiments, the coil support 121 is formed in a cylindrical shape and is sleeved on the heating element 130. The outer peripheral wall of the coil support 121 is provided with a plurality of winding protrusions 1211. The plurality of winding protrusions 1211 are arranged at intervals in the axial direction of the impeller 150. A winding groove for placing an electromagnetic coil is formed between two adjacent winding protrusions 1211. The electromagnetic coil can be set on the coil support 121 through the plurality of winding grooves to improve the assembly stability of the electromagnetic coil.

[0084] Combination Figures 2-4 as well as Figure 10 and Figure 11 In some embodiments of the present invention, the power supply component 140 is located on the air outlet side of the fan wheel 150 so that the air flowing out of the fan wheel 150 can pass through the power supply component 140, thereby facilitating the heat dissipation of the power supply component 140 and improving the heat dissipation efficiency of the power supply component 140, reducing the risk of overheating of the power supply component 140, and thus helping to ensure the normal operation of the power supply component 140.

[0085] Combination Figures 2-4 as well as Figure 10 and Figure 11 In some embodiments of the present invention, the impeller 150 is a centrifugal impeller, and the power supply assembly 140 is located on the radial outer side of the impeller 150.

[0086] The centrifugal impeller has an axial air intake and a radial air outlet. By placing the power supply component 140 on the radial outer side of the impeller 150, the power supply is positioned on the air outlet side of the impeller 150. This facilitates the airflow from the impeller 150 through the power supply component 140, thereby improving the heat dissipation of the power supply component 140 and facilitating its assembly. This also improves the production and assembly efficiency of the warm air blower 100.

[0087] Combination Figures 2-4 as well as Figure 10 and Figure 11 In some embodiments of the present invention, the power supply assembly 140 is located on the side of the heating element 130 facing the air inlet 111.

[0088] In other words, the power supply component 140 is positioned closer to the air inlet 111 than the heat source 130, so that the air flowing into the air duct space 113 from the air inlet 111 can preferentially flow through the power supply component 140 and dissipate heat from the power supply component 140. This avoids the air being heated by the heat source 130 and continuing to exchange heat with the power supply component 140, which helps to improve the heat dissipation effect of the power supply component 140 and thus further reduces the risk of the power supply component 140 overheating.

[0089] Combination Figure 3 as well as Figure 11 In some embodiments of the present invention, a portion of the impeller 150 is located inside the heating element 130 along the axial direction of the impeller 150, and another portion of the impeller 150 is located outside the heating element 130.

[0090] For example, in the axial direction of the impeller 150, a portion of the impeller 150 extends into the heating element 130, and another portion of the impeller 150 extends out of the heating element 130. In the radial direction of the impeller 150, the impeller 150 and the heating element 130 are spaced apart to avoid the heating element 130 interfering with the operation of the impeller 150 and to ensure the smooth operation of the impeller 150. At the same time, since a portion of the impeller 150 is located inside the heating element 130 and the impeller 150 is constructed as a centrifugal impeller, the portion of the impeller 150 located inside the heating element 130 can blow air toward the inner wall of the heating element 130, which is beneficial to ensure the heat dissipation effect of the air on the inner wall of the heating element 130.

[0091] Another part of the impeller 150 is located on the outside of the heating element 130, which helps to improve the guiding effect of the impeller 150 on the air inside the heating element 130, and facilitates the impeller 150 to drive the air to flow through the two sides of the heating element 130 (i.e., the inner and outer sides of the heating element 130 in the radial direction of the impeller 150). This helps to improve the heat exchange efficiency between the air and the heating element 130, improve the utilization rate of the heat generated by the heating element 130, and thus help to increase the temperature of the hot air output by the heater 100. It also helps to prevent the local overheating of the heater 100 caused by the excessive temperature of the outer surface of the heating element 130, and helps to improve the safety of the heater 100.

[0092] Combination Figure 19 and Figure 20 In some embodiments of the present invention, in the axial direction of the impeller 150, the diameter of the portion of the impeller 150 located outside the heating element 130 is D, and the diameter of the portion of the impeller 150 located inside the heating element 130 is d, where 0.5≤d / D≤0.9.

[0093] Considering that both the electromagnetic coil and the heating element 130 need to dissipate heat, the diameter D of the portion of the impeller 150 located outside the heating element 130 is made larger than the diameter d of the portion of the impeller 150 located inside the heating element 130. This allows the airflow driven by the portion of the impeller 150 located outside the heating element 130 to flow through the electromagnetic coil, thereby improving the heat dissipation effect of the impeller 150 on the electromagnetic coil, preventing the electromagnetic coil from overheating, and ensuring the heat dissipation effect of the impeller 150 on the heating element 130.

[0094] When d / D < 0.5, it can easily lead to poor heat dissipation effect of the impeller 150 on the heating element 130, or cause the diameter of the part of the impeller 150 located outside the heating element 130 to be too large, thus increasing the size of the heater 100. When d / D > 0.9, it can easily lead to poor heat dissipation effect of the impeller 150 on the electromagnetic coil, or cause the diameter of the part of the impeller 150 located inside the heating element 130 to be too large, thus causing the gap between the impeller 150 and the heating element 130 to be too small, affecting the air outlet effect of the impeller 150.

[0095] Combination Figure 19 and Figure 20 The axial dimension of the impeller 150 is defined as L, and the axial dimension of the part of the impeller 150 located inside the heating element 130 is defined as s, 0.4≤s / L≤0.8. This is beneficial to ensure that the axial dimension of the part of the impeller 150 located inside the heating element 130 is compatible with the axial dimension of the heating element 130, and at the same time, it is beneficial to ensure the heat dissipation effect of the impeller 150 on the heating element 130 and the electromagnetic coil.

[0096] Combination Figures 2-4 as well as Figure 10 and Figure 11 In some embodiments of the present invention, the portion of the impeller 150 located outside the heating element 130 is radially aligned with the power supply assembly 140.

[0097] In other words, in the radial direction of the impeller 150, the portion of the impeller 150 located outside the heating element 130 is positioned directly opposite the power supply assembly 140, so that the impeller 150 can drive air to flow through the power supply assembly 140, facilitating heat dissipation from the air to the power supply assembly 140. This also helps to improve the axial space utilization of the air duct space 113, enhance the structural compactness of the heater 100, and reduce the radial dimension of the heater 100 in the impeller 150, thus enabling a miniaturized design of the heater 100 and reducing the space required to install the heater 100.

[0098] Combination Figures 3-6In some embodiments of the present invention, the power supply assembly 140 includes a circuit board 142 and components 141. The components 141 are arranged on the circuit board 142 and electrically connected to the circuit board 142. In order to further save the space required for arranging the power supply assembly 140, the circuit board 142 can be constructed as a fan ring to reduce the size of the power supply assembly 140. The radius of the side edge of the circuit board 142 closest to the impeller 150 in the radial direction (which can also be understood as the inner diameter of the circuit board 142) is defined as R1, and the size range of R1 is 60mm to 90mm. The radius of the side edge of the circuit board 142 away from the impeller 150 in the radial direction (which can also be understood as the outer diameter of the circuit board 142) is defined as R2, and the size range of R2 is 110mm to 140mm, so as to ensure that the size of the circuit board 142 can meet the installation requirements of the components 141.

[0099] The radius Rb of the impeller 150 is typically between 70mm and 150mm. Since R1 < Rb, a clearance space 151 can be provided on the part of the impeller 150 located outside the heating element 130. The clearance space 151 is recessed in the radial direction of the impeller 150 towards the central axis of the impeller 150. The part of the power supply component 140 near the impeller 150 in the radial direction can be arranged in the clearance space 151 to achieve clearance between the impeller 150 and the power supply component 140, which facilitates the installation of the power supply component 140 and the impeller 150 driving airflow through the power supply component 140. At the same time, it can make the arrangement of the impeller 150 and the power supply component 140 more compact, which helps to reduce the space required to arrange the power supply component 140 in the air duct space 113, thereby facilitating the miniaturization design of the heater 100.

[0100] Combination Figures 3-6 In some embodiments of the present invention, in the radial direction of the impeller 150, the radially outer ends of some blades of the impeller 150 are recessed toward the axis of rotation of the impeller 150 to define a clearance space 151.

[0101] Specifically, the impeller 150 is formed as a centrifugal impeller, and the clearance space 151 is set at the air outlet end of the impeller 150. That is, at least a part of the clearance space 151 is located in the air outlet area of ​​the blade. In the radial direction of the impeller 150, the radial dimension of the part of the blade directly opposite the clearance space 151 is smaller than the radial dimension of the part of the blade that is misaligned with the clearance space 151 in the axial direction. Thus, by designing the blades of the impeller 150, a clearance space 151 that is recessed in the radial direction of the impeller 150 can be formed on the impeller 150, which facilitates the arrangement of the power supply component 140 in the clearance space 151, realizing the integration of the power supply component 140 and the impeller 150, and facilitating the dissipation of heat from the air discharged by the impeller 150 on the power supply component 140.

[0102] Combination Figures 3-6 In a further embodiment of the present invention, the power supply assembly 140 has a first side 1422 and a second side 1423. The side of the power supply assembly 140 with relatively fewer components 141 in the axial direction of the impeller 150 is defined as the first side 1422 of the power supply assembly 140, and the side of the power supply assembly 140 with relatively more components 141 in the axial direction of the impeller 150 is defined as the second side 1423 of the power supply assembly 140. The minimum distance between the first side 1422 and the groove wall of the clearance space 151 opposite to it is S1, and the minimum distance between the second side 1423 and the groove wall of the clearance space 151 opposite to it is S2. At the same time, the distance between one surface of the power supply assembly 140 in the radial direction of the impeller 150 and the groove wall of the clearance space 151 opposite to it is S3. S1, S2 and S3 are all greater than or equal to 8mm to prevent the power supply assembly 140 and the impeller 150 from interfering with each other, thereby helping to ensure the smooth operation of the impeller 150.

[0103] In other embodiments of the present invention, the power supply component 140 may be disposed radially outside the heating element 130 so that the power supply component 140 can detect the air temperature near the heating element 130, thereby facilitating the power supply component 140 to control the heating element 130 to adjust its heating power in a timely manner.

[0104] Furthermore, the power supply component 140 is located at the end of the heat source 130 near the air inlet 111, so that the air can preferentially dissipate heat from the power supply component 140, avoiding the air from continuing to exchange heat with the power supply component 140 after being heated by the heat source 130, which is beneficial to improving the heat dissipation effect of the power supply component 140.

[0105] It is understandable that the specific location of the power supply component 140 can be determined according to actual production requirements, and no specific restrictions are made here.

[0106] Combination Figures 7-9 In some embodiments of the present invention, a mounting portion 1421 is provided on the circuit board 142, and a mounting mating portion 117 may be provided at the position opposite to the mounting portion 1421 on the housing 110. The mounting portion 1421 and the mounting mating portion 117 may be formed as threaded holes. The circuit board 142 can be fixed on the housing 110 by threaded fasteners (such as screws) to realize the positioning and installation of the power supply assembly 140, and facilitate the disassembly and assembly of the power supply assembly 140, thereby facilitating the maintenance or replacement of the power supply assembly 140 and helping to reduce the maintenance cost of the heater 100.

[0107] Combination Figures 10-12In some embodiments of the present invention, the housing 110 is provided with a heat dissipation area 116, which is in communication with the air duct space 113. The heat dissipation area 116 is correspondingly arranged with the power supply component 140 so that at least part of the air flowing through the power supply component 140 is discharged from the heat dissipation area 116.

[0108] For example, the heat dissipation area 116 can be composed of a plurality of through holes 1161 provided through the housing 110 along the thickness direction of the housing 110. The plurality of through holes 1161 are arranged at intervals along the circumferential and axial directions of the impeller 150 on the housing 110, that is, the plurality of through holes 1161 are arranged in an array on the housing 110 and are all connected to the air duct space 113, so as to realize the connection between the heat dissipation area 116 and the air duct space 113.

[0109] When air enters the air duct space 113 from the air inlet 111 and then enters the impeller 150, the impeller 150 discharges air in its radial direction, so that some air can flow through the power supply component 140. The air flowing through the power supply component 140 can dissipate heat from the power supply component 140. After dissipating heat from the power supply component 140, some or all of the air can further flow to the heat dissipation area 116 and be discharged from the housing 110 through the heat dissipation area 116, which helps to improve the heat dissipation efficiency of the power supply component 140.

[0110] Combination Figure 10 and Figure 11 In some embodiments of the present invention, the heat dissipation area 116 is arranged directly opposite the power supply assembly 140 in the radial direction of the impeller 150.

[0111] For example, in the radial projection plane of the impeller 150, the frontal projection plane of the heat dissipation area 116 coincides with the frontal projection plane of the power supply component 140, or the frontal projection plane of the power supply component 140 falls within the frontal projection range of the heat dissipation area 116, so that the air after the power supply component 140 is cooled can flow to the heat dissipation area 116, thereby facilitating the air to flow out of the housing 110 through the heat dissipation area 116, which is beneficial to improving the heat dissipation efficiency of the power supply component 140 and improving the smoothness of air flow.

[0112] Combination Figure 10 and Figure 11 In some embodiments of the present invention, the air inlet 111 and the air outlet 112 are opposite each other in the axial direction of the impeller 150, and the heat dissipation area 116 is located below the rotation axis of the impeller 150.

[0113] In other words, the heater 100 has air intake on one side and air outlet on the other side in the axial direction of the impeller 150. The statement that "the heat dissipation area 116 is located below the rotation axis of the impeller 150" can be understood as the heat dissipation area 116 being set perpendicular to the air intake and exhaust direction of the heater 100. Furthermore, the heat dissipation area 116 is located on the side of the housing 110 facing the ground. This helps reduce the risk of debris entering the housing 110 through the heat dissipation area 116, thereby preventing debris from affecting the operation of components such as the impeller 150. This ensures the heat dissipation efficiency of the power supply component 140 while also improving the service life of the heater 100.

[0114] It should be noted that "miscellaneous items" can include rainwater or dust, etc.

[0115] Combination Figure 10 , Figure 11 , Figure 13 as well as Figure 14 In some embodiments of the present invention, the coil assembly further includes a magnetic strip and a magnetic strip support 122. In the radial direction of the impeller 150, the magnetic strip support 122 can be arranged on the radial outer side of the coil support 121, and the magnetic strip support 122 is used to install the magnetic strip, which is beneficial to improve the assembly reliability and installation convenience of the magnetic strip. By setting the magnetic strip on the radial outer side of the coil support 121, the leakage of the magnetic field on the radial outer side of the coil support 121 is reduced, which is beneficial to increase the intensity of the magnetic field generated by the electromagnetic coil on the radial side near the heating element 130.

[0116] Combination Figure 10 , Figure 11 , Figure 13 as well as Figure 14 In some further embodiments of the present invention, in the axial direction of the impeller 150, a flow guiding structure 1221 may be provided on the side of the magnetic strip support 122 near the air inlet 111, and the flow guiding structure 1221 may extend along the circumferential direction of the magnetic strip support 122. The flow guiding structure 1221 can guide air to the outer wall of the heating element 130 and the electromagnetic coil, which is beneficial to improving the heat dissipation efficiency of the air to the outer wall of the heating element 130 and the electromagnetic coil.

[0117] Furthermore, in the projection plane of the impeller 150 in the axial direction, the orthogonal projection area of ​​the flow guiding structure 1221 is smaller than the orthogonal projection area of ​​the magnetic strip support 122, and the power supply component 140 is misaligned with the flow guiding structure 1221 to prevent mutual interference between the power supply component 140 and the flow guiding structure 1221 during the assembly of the heater 100, which is beneficial to improving the assembly convenience of the power supply component 140.

[0118] Combination Figures 13-16In some embodiments of the present invention, the power supply component 140 is provided with a heat sink 143. The heat sink 143 can increase the heat dissipation area of ​​the power supply component 140, thereby further improving the heat dissipation efficiency and heat dissipation effect of the power supply component 140, reducing the risk of overheating of the power supply component 140, and ensuring the normal operation of the power supply component 140.

[0119] Combination Figure 10 and Figure 11 In some embodiments of the present invention, the power supply assembly 140 further includes a circuit board 142 and components 141. The components 141 are arranged on the circuit board 142 and electrically connected to the circuit board 142. When the power supply assembly 140 is working, the components 141 generate heat. The heat dissipation efficiency of the power supply assembly 140 can be improved by providing a heat sink 143 on the circuit board 142. Furthermore, by arranging the power supply assembly 140 on the portion of the fan 150 located outside the heat-generating body 130, the fan 150 can drive airflow through the circuit board 142 and the components 141 on the circuit board 142, thereby facilitating the heat dissipation of the components 141 and further improving the heat dissipation efficiency of the power supply assembly 140.

[0120] Furthermore, component 141 is located on the side of circuit board 142 facing air inlet 111. This can be understood as follows: in the axial direction of impeller 150, the side of circuit board 142 away from air inlet 111 is opposite to heat source 130. Component 141 is set on the side of circuit board 142 away from heat source 130. By setting component 141 on the side of circuit board 142 facing air inlet 111, component 141 can be moved away from heat source 130, thereby reducing the impact of heat generated by heat source 130 on component 141 and protecting component 141. When air enters the air duct space 113 from air inlet 111, the air can preferentially flow through component 141 to dissipate heat from component 141, preventing the air after dissipating heat from heat source 130 from affecting the temperature of component 141, which is beneficial to improving the heat dissipation effect of component 141.

[0121] Reference Figure 11 In a further embodiment of the present invention, the circuit board 142 and the heating element 130 are spaced apart in the axial direction of the impeller 150 to prevent the power supply assembly 140 from interfering with the operation of the impeller 150. The distance L1 between the circuit board 142 and the heating element 130 in the axial direction of the impeller 150 is greater than or equal to 8mm, which helps to further reduce the impact of the heat generated by the heating element 130 on the power supply assembly 140.

[0122] In some embodiments of the present invention, the power supply assembly 140 includes a temperature detector for detecting temperature and a controller, the controller being electrically connected to the temperature detector and the electromagnetic coil, respectively, and the controller being configured to reduce the heating power of the heating element 130 and / or increase the rotational speed of the impeller 150 when it is determined that the temperature detected by the temperature detector is greater than a set temperature.

[0123] For example, the temperature detector can detect the temperature of the environment around the power supply component 140, which can also be understood as the temperature detector detecting the temperature of the air around the power supply component 140. The temperature information detected by the temperature detector can be fed back to the controller. The controller can determine whether the air temperature detected by the temperature detector is greater than the set temperature. When the temperature detected by the temperature detector is greater than the set temperature, the controller can reduce the heating power of the heating element 130 to reduce the heat generated by the heating element 130, or the controller can control the fan wheel 150 to increase the speed to improve the heat dissipation efficiency of the heating element 130 and the power supply component 140, or the controller can control the fan wheel 150 to increase the speed while controlling the heating element 130 to reduce the heating power, thereby helping to reduce the risk of local overheating of the heater 100 and thus improving the safety of the heater 100.

[0124] It should be noted that "set temperature" refers to the highest temperature that is preset to ensure the safe use of the heater 100.

[0125] In some embodiments of the present invention, the temperature detector is a thermistor. Thermistors have high sensitivity and a wide operating temperature range, making them suitable for high-temperature working environments. Furthermore, thermistors are small in size, which reduces the space they occupy and helps to reduce the size of the power supply component 140.

[0126] The power supply assembly 140 also includes an IGBT (Insulated Gate Bipolar Transistor), with a thermistor disposed adjacent to the IGBT.

[0127] Specifically, component 141 includes IGBT. The heat generated by power supply component 140 is mainly due to the continuous switching on and off of IGBT during the operation of power supply component 140. Therefore, by placing the thermistor near the IGBT, it is beneficial for the thermistor to quickly detect the heat dissipation abnormality of power supply component 140, which is beneficial to improve the response speed of power supply component 140, reduce the risk of overheating of power supply component 140, and improve the service life and safety of heater 100.

[0128] It should be noted that the components 141 may also include bridge rectifiers, capacitors, inductors, resistors, and transformers. In addition, the circuit board 142 is also provided with a signal socket 1424 and a power input interface 1425. The signal socket 1424 is used to connect external devices (e.g., sensors, controllers, or other electronic devices) to facilitate data exchange and communication. The power input interface 1425 is used to connect to the power supply system of the circuit board 142 to provide the circuit board 142 with the power required for operation and ensure that the components on the circuit board 142 can operate normally.

[0129] The following is combined Figure 10 and Figure 11 The following is a brief description of two assembly methods for the heater 100 according to an embodiment of the present invention. Assembly Method 1: The electromagnetic coil is installed on the coil bracket 121. The heating element 130 is fixedly connected to the coil bracket 121 on which the electromagnetic coil is installed. The magnetic strip bracket 122 and the flow guiding structure 1221 are integrated. The magnetic strip can be installed on the magnetic strip bracket 122. The magnetic strip bracket 122 is sleeved on the radial outer side of the coil bracket 121 and fixedly connected to the coil bracket 121. The impeller 150 can be positioned in the center area of ​​the heating element 130 by hand. The power supply component 140 is arranged in the clearance space 151 and fixedly connected to the magnetic strip bracket 122. This realizes the modular assembly of the heating element 130, the coil component, the magnetic strip bracket 122, the magnetic strip, and the power supply component 140. Then, the above parts are placed into the shell body 114, and the coil bracket 121 and the impeller 150 are further connected to the shell body 114 respectively. Finally, the air inlet mesh cover 115 is installed at the air inlet 111 of the shell body 114 to complete the assembly of the heater 100.

[0130] In order to ensure the assembly reliability of the components inside the shell body 114 with the shell body 114, the magnetic strip bracket 122 can be further connected to the shell body 114 to reduce the risk of the components inside the shell body 114 falling off the shell body 114.

[0131] Assembly Method 2: First, the heating element 130 is fixedly installed inside the shell body 114. Then, the coil bracket 121 with the electromagnetic coil installed is fitted on the radial outer side of the heating element 130, and the coil bracket 121 is fixedly connected to the shell body 114. Then, the magnetic strip bracket 122 and the flow guiding structure 1221 are fitted on the radial outer side of the coil bracket 121 and fixedly connected to the shell body 114. Then, the impeller 150 is positioned and installed in the central area of ​​the heating element 130. The power supply component 140 can be installed on the magnetic strip bracket 122 or the shell body 114. Finally, the air inlet mesh cover 115 is installed at the air inlet 111 of the shell body 114 to complete the assembly of the heater 100.

[0132] The power supply assembly 140 can be pre-installed on the magnetic strip bracket 122, which helps to improve the assembly convenience of the power supply assembly 140 and the magnetic strip bracket 122.

[0133] It should be noted that the above-mentioned fixed connection methods can all be to fix the components together with threaded connectors to facilitate the disassembly, maintenance and cleaning of the heater 100. Of course, it is understood that the fixed connection methods include but are not limited to connecting with threaded connectors, and can also be snap-fit, etc. The specific fixed connection method can be determined according to the actual production requirements, and no specific limitation is made here.

[0134] like Figure 21 As shown, in some embodiments of the present invention, the heater 100 further includes a bracket 220, and the housing 110 is rotatably disposed on the bracket 220 to adjust the air outlet direction.

[0135] For example, the heater 100 also includes a base 230, a bracket 220 rotatably connected to the base 230, and a drive mechanism is provided on the base 230. The drive mechanism can drive the bracket 220 to rotate in the left and right direction relative to the base 230. The bracket 220 can form an installation space. The inner wall of the installation space is provided with a connecting part. The housing 110 is rotatably connected to the connecting part and drives the housing 110 to rotate up and down.

[0136] Optionally, the vertical rotation of the housing 110 can also be in the form of a guide rail. Alternatively, the bracket 220 can be mounted on the base 230, and the drive mechanism can be mounted on the bracket 220 and connected to the housing 110 for transmission, so as to drive the housing 110 to rotate vertically or horizontally.

[0137] The drive structure can be configured as a drive motor.

[0138] Combination Figures 16-18 According to the control method of the heater 100 of the present invention, wherein the heater 100 is the heater 100 described above, the control method includes:

[0139] Control the operation of the fan 150 so that air passes through the power supply assembly 140 and the heating element 130.

[0140] For example, when the heater 100 is turned on, the operating level of the heater 100 can be selected, and the heating power of the heating element 130 is adapted to the operating level of the heater 100. The heating element 130 starts to generate heat, and at the same time, the fan wheel 150 is controlled to run to drive the air flow. The air can flow through the power supply component 140 and the heating element 130 and dissipate heat to the power supply component 140 and the heating element 130 respectively. The temperature of the air rises and flows out from the air outlet 112, so that the heater 100 outputs hot air.

[0141] Detect air temperature.

[0142] For example, after the heater 100 is turned on, it can detect the air temperature in the air duct space 113. Specifically, the temperature detector on the power supply component 140 can detect the temperature in the air duct space 113, or the temperature sensor set near the power supply component 140 and connected to the power supply component 140 can detect the temperature in the air duct space 113. It can also be understood that the temperature detector or temperature sensor can detect the temperature of its surrounding environment. The temperature detector or temperature sensor can feed back the detected air temperature to the controller. The controller can compare the air temperature with the set temperature to determine whether the air temperature is greater than the set temperature.

[0143] If the detected temperature is higher than the set temperature, reduce the heating power of the heating element 130 and / or increase the rotation speed of the impeller 150.

[0144] In other words, when the controller determines that the air temperature detected by the temperature detector is higher than the set temperature, the controller can reduce the heating power of the heating element 130 or control the heating element 130 to stop operating, or the controller can control the fan wheel 150 to increase its speed, or the controller can control the heating element 130 to reduce its heating power while controlling the fan wheel 150 to increase its speed, so as to prevent the heater 100 from overheating locally by reducing the heat output of the heating element 130 or increasing the heat dissipation efficiency of the air to the heating element 130, and ensure the safety of the heater 100 in use.

[0145] According to the control method of the heater 100 of the present invention, by enabling the power supply component 140 to detect the air temperature and determine whether the detected temperature is higher than the set temperature, it is beneficial to adjust the heating power of the heating element 130 and / or the speed of the fan wheel 150 in a timely manner when the heater 100 overheats, which helps to reduce the safety hazards caused by the heater 100 overheating and improve the safety of the heater 100.

[0146] Combination Figures 16-18 The control method of the heater 100 also includes controlling the heating element 130 to maintain the current heating power when the detected temperature is lower than the set temperature.

[0147] When the controller determines that the air temperature detected by the temperature detector is lower than the set temperature, it means that the heater 100 will not be at risk of overheating. The controller can control the heating element 130 to maintain the current heating power, or control the fan wheel 150 to maintain the current speed, or control the heating element 130 to maintain the current heating power while controlling the fan wheel 150 to maintain the current speed, so as to ensure the efficiency of the heater 100 in outputting hot air.

[0148] Combination Figure 17 and Figure 18In some embodiments of the present invention, when it is determined that the detected temperature is higher than the set temperature, reducing the heating power of the heating element 130 further includes: after reducing the heating power, after a set time interval, continuing to determine whether the detected temperature is higher than the set temperature; if it is still higher than the set temperature, then continuing to reduce the heating power of the heating element 130, and repeating this process until the detected temperature is lower than the set temperature or the heating power is lower than the set power.

[0149] It should be noted that "set time" refers to the preset interval for the power supply component 140 to detect the air temperature. For example, the power supply component 140 can be preset to detect the air temperature once every 5 seconds, 12 seconds, 1 minute, etc. "Set power" refers to the preset minimum power that ensures the heating effect of the heating element 130 on the air.

[0150] After the heating power of the heating element 130 is reduced, the heat generated by the heating element 130 is reduced. However, there may still be a problem that the heat generated by the heating element 130 cannot be dissipated in time and accumulates in the air duct space 113. For example, the heat dissipation efficiency of the air driven by the fan wheel 150 to the heating element 130 is lower than the heat generation efficiency of the heating element 130, or the fan wheel 150 cannot rotate, causing it to be unable to drive the air flow. Therefore, in order to effectively reduce the risk of the heater 100 overheating, the power supply component 140 can detect the air temperature again after a set interval.

[0151] like Figure 17 As shown, for example, after the heater 100 is turned on and a setting is selected, the heating power of the heating element 130 is P1. The power supply component 140 detects the air temperature. If the detected temperature is higher than the set temperature, the power supply component 140 controls the heating element 130 to reduce its heating power to P2. Then, after a set interval, the power supply component 140 can determine whether the detected air temperature is higher than the set temperature again. If the detected air temperature is still higher than the set temperature, the power supply component 140 continues to control the heating power of the heating element 130 to reduce to P3. After the efficiency decreases again, the power supply component 140 continues to detect the air temperature again after a set interval, and determines whether the third detected air temperature is higher than the set temperature. If the third detected air temperature is still higher than the set temperature, the power supply component 140 continues to control the heating power of the heating element 130 to decrease. This process is repeated until the temperature detected by the power supply component 140 is lower than the set temperature or the heating power of the heating element 130 is lower than the set power. This effectively reduces the risk of overheating of the heater 100 and ensures the safety of the heater 100.

[0152] In some embodiments of the present invention, if it is determined that the heating power of the heating element 130 has been reduced more than a set number of times, an alarm signal is issued and / or the heater 100 is stopped from operating.

[0153] It should be noted that "set number of times" can be understood as a pre-set number of times the heating power of the heating element 130 is reduced, which is beneficial to reducing the safety hazards caused by overheating of the heater 100. It can be 3 times, 6 times, or 8 times, etc.

[0154] If the heating power of the heating element 130 is reduced too many times, for example, when the actual number of times the heating power of the heating element 130 is reduced is greater than the set number, it indicates that the detected temperature is too high compared to the set temperature. Continuing to reduce the heating power of the heating element 130 may not be able to guarantee an effective reduction in the detected temperature. At this time, the heater 100 may be malfunctioning and poses a significant safety hazard. An alarm signal can be issued to remind the user to pay attention to the malfunction of the heater 100, so that the user can take corresponding preventive or countermeasure measures, which is conducive to improving the safety of the heater 100.

[0155] Warning signals can convey information in various ways. For example, warning signals can be visual warning signals, which usually attract the user's attention through lights or signs, or they can be auditory warning signals, which usually attract the user's attention through warning sounds. Understandably, the specific warning signal can be determined according to the actual production requirements, and no specific limitation is made here, as long as the warning signal can effectively remind the user.

[0156] Optionally, when the number of times the heating power of the heating element 130 is reduced exceeds a set number, the heater 100 can be directly controlled to stop operating. Alternatively, when the number of times the heating power of the heating element 130 is reduced exceeds a set number, an alarm signal can be issued while the heater 100 is controlled to stop operating. This is to remind the user of the abnormal condition of the heater 100, so that the user can take corresponding preventive or countermeasures. It can also prevent the heating element 130 from continuing to generate heat, prevent the safety hazards of the heater 100 from continuing to increase, and improve the safety of the heater 100.

[0157] In some embodiments of the present invention, the set number of times is set to a range of 3-5 times. By setting the set number of times to a range of 3-5 times, the heating element 130 can reduce the heating power multiple times. When the detected temperature is slightly higher than the set temperature, the heating power of the heating element 130 can be reduced to prevent the heater 100 from overheating or to suppress the efficiency of the heater 100 from overheating. This ensures the continuous operation of the heater 100 while improving the safety of the heater 100. If the detected temperature still cannot be effectively reduced after the heating element 130 has reduced the heating power multiple times, an alarm signal can be issued in time or the heater 100 can be stopped from running, or the heater 100 can be stopped from running at the same time as the alarm signal is issued, which is beneficial to improving the safety of the heater 100.

[0158] Specifically, when the set number of times is less than 3, the heating power of the heating element 130 is reduced too few times. When the heating power of the heating element 130 is reduced more than 2 times, the heater 100 will issue an alarm signal or stop operating directly, and cannot effectively prevent the heater 100 from overheating by reducing the heating power of the heating element 130. However, when the set number of times is greater than 5, although the heating power of the heating element 130 can be effectively reduced, it also indicates that the heater 100 has a greater safety hazard at this time. Simply reducing the heating power of the heating element 130 may not be enough to solve the overheating problem of the heater 100, which may lead to a continuous increase in the safety hazard of the heater 100 and affect the safety of the heater 100 in use.

[0159] In some embodiments of the present invention, the control power supply component 140 detects the air temperature in real time.

[0160] Specifically, the temperature detector on the power supply assembly 140 can continuously monitor the air temperature, which helps to detect whether the heater 100 is overheating in a timely manner. Furthermore, the power supply assembly 140 can feed back the detected air temperature to the controller in real time. The controller can adjust the heating power of the heating element 130 in real time based on the temperature information fed back by the temperature detector, thereby further improving the safety of the heater 100.

[0161] The following reference Figure 18 The specific control process of the control method of the heater 100 in this embodiment of the invention is briefly described.

[0162] After the heater 100 is turned on, select the working level of the heater 100 according to the usage requirements. After the level of the heater 100 is selected, the heating element 130 can first run at the first heating power and generate heat. At the same time, control the fan wheel 150 to drive the air to flow through the power supply component 140 and the heating element 130. Considering that the heater 100 is at risk of overheating regardless of whether the fan wheel 150 is running normally, the power supply component 140 needs to detect the air temperature when the fan wheel 150 is running normally and when an abnormality occurs.

[0163] When the impeller 150 is operating normally, the power supply component 140 initially detects the air temperature as T1 and determines whether the air temperature T1 is greater than the set temperature Td. When T1 < Td, the heating element 130 continues to operate at the first heating power. When T1 ≥ Td, the power supply component 140 controls the heating element 130 to reduce its heating power. At this time, the heating power of the heating element 130 is adjusted to the second heating power, which is less than the first heating power. The power supply component 140 can continue to detect the air temperature and define the detected air temperature as T2. It then determines whether the air temperature T2 is greater than the set temperature Td. When T2 < Td, the heating element 130 continues to operate at the second heating power. When T2 ≥ Td, the power supply component 140 controls the heating element 130 to reduce its heating power again. At this time, the heating power of the heating element 130 is adjusted to the second heating power. If the third heating power is less than the second heating power, the power supply component 140 can continue to detect the air temperature and define the detected air temperature as T3. It then determines whether the air temperature T3 is greater than the set temperature Td. When T3 < Td, the heating element 130 continues to operate at the third heating power. When T3 ≥ Td, the power supply component 140 controls the heating element 130 to reduce the heating power for the third time. At this time, the heating power of the heating element 130 is adjusted to the fourth heating power, which is less than the third heating power. The power supply component 140 can continue to detect the air temperature and define the detected air temperature as T4. It then determines whether the air temperature T4 is greater than the set temperature Td, and so on, until the air temperature detected by the power supply component 140 is lower than the set temperature or the heating power of the heating element 130 is less than the set power.

[0164] The air temperature detected by the power supply component 140 each time may be the same or different.

[0165] When the impeller 150 is in an abnormal state, such as when its rotational speed decreases abnormally or it fails to rotate, the power supply component 140 initially detects the air temperature as T1' and determines whether T1' is greater than the set temperature Td. When T1' < Td, the heating element 130 can still maintain the first heating power. When T1' ≥ Td, the power supply component 140 controls the heating element 130 to reduce its heating power. At this time, the heating power of the heating element 130 is adjusted to the fifth heating power, which is less than the first heating power. The power supply component 140 can continue to detect the air temperature and define the detected air temperature as T2'. It then determines whether the air temperature T2' is greater than the set temperature Td. When T2' < Td, the heating element 130 still maintains the fifth heating power. When T2' ≥ Td, the power supply component... The power supply component 140 controls the heating element 130 to reduce its heating power again. At this time, the heating power of the heating element 130 is adjusted to the sixth heating power, which is less than the fifth heating power. The power supply component 140 can continue to detect the air temperature and define the detected air temperature as T3'. It determines whether the air temperature T3' is greater than the set temperature Td. When T3' < Td, the heating element 130 still maintains the sixth heating power. When T3' ≥ Td, the power supply component 140 controls the heating element 130 to reduce its heating power for the third time. At this time, the heating power of the heating element 130 is adjusted to the seventh heating power, which is less than the sixth heating power. This process is repeated. When the power supply component 140 determines that the number of times the heating power of the heating element 130 has been reduced is greater than the set number, the power supply component 140 can issue an alarm signal or control the heater 100 to stop.

[0166] Wherein, the fifth heating power can be the same as the second heating power, the sixth heating power can be the same as the third heating power, and the seventh heating power can be the same as the fourth heating power; or, the fifth heating power can be different from the second heating power, the sixth heating power can be different from the third heating power, and the seventh heating power can be different from the fourth heating power.

[0167] In some embodiments of the present invention, the heater 100 has a cold air operation mode and a warm air operation mode. The control method further includes determining the operation mode of the heater, thereby setting the heater to operate in cold air mode or warm air mode according to the user's selection, ensuring that the heater 100 can provide suitable air output according to the user's usage needs, which is beneficial to improving the functionality of the heater 100.

[0168] Based on this, the operating mode of the heater 100 can be controlled by controlling the operating status of the fan wheel 150 and the heating element 130. When the heater 100 is in the cold air operating mode, the fan wheel 150 can be started to generate cold air, while the heating element 130 does not work, so as to ensure that the heater 100 can provide pure cold air, so that the heater 100 can be used to cool down the environment with high temperature, and at the same time, it helps to reduce the energy consumption of the heater 100.

[0169] It should be noted that when the heater 100 is started and selected to run in cold air mode, there is no action to stop the heating element 130. However, if the heater 100 switches from warm air mode to cold air mode, there is an action to stop the heating element 130.

[0170] When the heater 100 is in the warm air operation mode, the fan wheel 150 and the heating element 130 work simultaneously to ensure that the heater 100 can output hot air, so that the heater 100 can be used to heat the environment with low temperature.

[0171] In some embodiments, the cold air operation mode of the heater 100 needs to ensure that the output air speed of the heater 100 is high enough. That is, the number of speed settings in the cold air operation mode of the heater 100 is greater than the number of speed settings in the warm air operation mode, and the maximum air speed in the cold air operation mode is greater than the maximum air speed in the warm air operation mode. For example, the heater 100 can have 8 speed settings in the cold air operation mode and 3 speed settings in the warm air operation mode. When the heater 100 directly switches from the 3rd speed setting in the cold air mode to the warm air mode, the heater 100 operates at the maximum speed setting (i.e., the third speed setting) in the warm air mode, and the output hot air efficiency of the heater 100 is the highest.

[0172] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0173] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A space heater, characterized in that, include: The housing has an air inlet and an air outlet, and the housing has an air duct space inside that connects the air inlet and the air outlet; A coil assembly disposed in the housing, the coil assembly including an electromagnetic coil for generating a magnetic field; A heating element is disposed within the air duct space and is configured to generate heat under the action of the magnetic field. A power supply assembly is disposed within the air duct space and is electrically connected to the electromagnetic coil. A wind turbine, wherein the wind turbine is disposed within the air duct space; The power supply component is configured to control the heating power of the heating element and / or the rotational speed of the fan wheel based on the detected air temperature.

2. The heater according to claim 1, characterized in that, The power supply component is located on the air outlet side of the wind turbine.

3. The heater according to claim 2, characterized in that, The wind turbine is a centrifugal wind turbine, and the power supply assembly is located on the radial outer side of the wind turbine.

4. The warm air blower according to claim 1, characterized in that, The power supply component is located on the side of the heating element facing the air inlet.

5. The warm air blower according to claim 4, characterized in that, Along the axial direction of the wind turbine, a portion of the wind turbine is located within the heating element, and another portion of the wind turbine is located outside the heating element.

6. The warm air blower according to claim 5, characterized in that, The portion of the wind turbine located outside the heating element is radially aligned with the power supply assembly.

7. The heater according to claim 1, characterized in that, The housing is provided with a heat dissipation area, which is connected to the air duct space. The heat dissipation area is correspondingly arranged with the power supply component so that at least part of the air flowing through the power supply component is discharged from the heat dissipation area.

8. The heater according to claim 7, characterized in that, The heat dissipation area and the power supply assembly are positioned opposite each other in the radial direction of the wind turbine.

9. The heater according to claim 7, characterized in that, Along the axial direction of the wind turbine, the air inlet is opposite to the air outlet, and the heat dissipation area is located below the rotation axis of the wind turbine.

10. The heater according to claim 1, characterized in that, The power supply assembly is equipped with heat sinks.

11. The heater according to claim 1, characterized in that, The power supply assembly also includes a circuit board and components, the components being located on the side of the circuit board facing the air inlet.

12. The heater according to any one of claims 1-11, characterized in that, The power supply assembly includes a temperature detector for detecting temperature and a controller. The controller is electrically connected to the temperature detector and the electromagnetic coil, respectively. The controller is configured to reduce the heating power of the heating element and / or increase the rotational speed of the fan when it is determined that the temperature detected by the temperature detector is greater than a set temperature.

13. The warm air blower according to claim 12, characterized in that, The temperature detector is configured as a thermistor, and the power supply assembly also includes an IGBT, with the thermistor disposed adjacent to the IGBT.

14. The heater according to claim 1 further includes a bracket, wherein the housing is rotatably disposed on the bracket to adjust the air outlet direction.

15. A control method for a heater, characterized in that, The heater is the heater according to any one of claims 1-14, and the control method includes: Control the operation of the wind turbine so that air passes through the power supply assembly and the heating element; Detect air temperature; If the detected temperature is higher than the set temperature, the heating power of the heating element is reduced and / or the rotational speed of the fan is increased.

16. The control method for a heater according to claim 15, characterized in that, Also includes: When the detected temperature is determined to be lower than the set temperature, the heating element is controlled to maintain the current heating power, and / or the fan is controlled to maintain the current rotation speed.

17. The control method for a heater according to claim 15, characterized in that, The step of reducing the heating power of the heating element when the detected temperature is higher than the set temperature also includes: After reducing the heating power, the system continues to determine whether the detected temperature is higher than the set temperature after a set time interval. If it is still higher than the set temperature, the heating power of the heating element is reduced again. This process is repeated until the detected temperature is lower than the set temperature or the heating power is lower than the set power.

18. The control method for a heater according to claim 17, characterized in that, If the number of times the heating power of the heating element is reduced exceeds a set number, an alarm signal is issued and / or the heater is controlled to stop operating.

19. The control method for a warm air blower according to claim 18, characterized in that, The set number of times is in the range of 3-5 times.

20. The control method for a heater according to claim 17, characterized in that, The power supply component is controlled to detect the air temperature in real time.

Images