Air conditioning equipment and fan heater

Abstract

The invention discloses air conditioning equipment and a fan heater, and the air conditioning equipment comprises an electromagnetic coil which can be electrified to generate a magnetic field; the heating element is configured to emit heat under the action of a magnetic field, the heating element is of an annular structure, and the electromagnetic coil is arranged on the outer side of the heating element; the wind wheel comprises a first part and a second part, the outer diameter of the first part is different from that of the second part, the first part is located in the heating part, the second part is located on the outer side of the heating part, and the air conditioning equipment is constructed to guide at least part of airflow at the air outlet end of the second part to the outer side of the heating part. According to the air conditioning equipment designed by the invention, the wind wheel is designed to have unequal diameters, so that the heat dissipation of the heating element and the electromagnetic coil or other structures on the outer side of the heating element can be considered, and the heat dissipation effect of the heating element and the electromagnetic coil or other structures on the outer side of the heating element is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to an air conditioning device and a fan heater. BACKGROUND

[0002] In the related art, an air conditioning device can adjust air temperature, and a heating structure and a flow guide structure of the air conditioning device are arranged separately, which increases air resistance of the air conditioning device. In some existing technologies, the heating structure and the flow guide structure are integrated to reduce overall air resistance, but the integrated structure has a problem of poor heat dissipation, which causes a large safety hazard of the air conditioning device. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an air conditioning device. The air conditioning device designed according to the present application has wind wheels of different diameters, which can take into account the heat dissipation of the heating element and the electromagnetic coil or other structure outside the heating element, and optimize the heat dissipation effect of the heating element and the electromagnetic coil or other structure outside the heating element.

[0004] The present application also provides a fan heater having the above air conditioning device.

[0005] The air conditioning device according to the present application comprises: an electromagnetic coil, which can be energized to generate a magnetic field; a heating element, which is configured to heat up under the action of the magnetic field, the heating element being formed as a ring structure, the electromagnetic coil being arranged outside the heating element; a wind wheel, which comprises a first part and a second part, the first part and the second part having different outer diameters, the first part being located inside the heating element, and the second part being located outside the heating element, the air conditioning device being configured to guide at least part of the airflow at the air outlet end of the second part to the outside of the heating element.

[0006] The air conditioning device according to the present application has a difference in outer diameter between the first part of the wind wheel and the second part of the wind wheel, which takes into account the heat dissipation of the wind wheel to the heating element and the electromagnetic coil or other structure outside the heating element, and optimizes the heat dissipation effect of the wind wheel to the heating element and the electromagnetic coil or other structure outside the heating element.

[0007] According to some embodiments of the present application, the outer diameter of the second part is greater than the outer diameter of the first part.

[0008] According to some embodiments of the present application, the wind wheel is a centrifugal wind wheel, and the electromagnetic coil is located downstream of the radial air outlet end of the second part.

[0009] According to some embodiments of the present application, the second portion comprises a plurality of first blades, and in the radial direction of the impeller, airflow channels are defined between radially adjacent first blades; and in the axial direction of the impeller, the electromagnetic coil is disposed opposite at least part of the first blades.

[0010] According to some embodiments of the present application, the second portion comprises a plurality of first blades, and in the radial direction of the impeller, the axial height of the first blades gradually decreases.

[0011] According to some embodiments of the present application, in the axial direction of the impeller, the ratio of the outer diameter of the first portion to the outer diameter of the second portion is in the range of 0.5-0.9.

[0012] According to some embodiments of the present application, the outer diameter of the second portion is smaller than the outer diameter of the first portion; and the air conditioning device further comprises a guide member, which is sheathed on the second portion and extends towards the electromagnetic coil to guide airflow towards the electromagnetic coil.

[0013] According to some embodiments of the present application, the axial length of the first portion is s, and the total axial length of the impeller is L, and the ratio of s / L is in the range of 0.4-0.8.

[0014] According to some embodiments of the present application, at least part of the heat generating member is bent to define a groove.

[0015] According to some embodiments of the present application, the groove extends in the axial direction of the impeller.

[0016] According to some embodiments of the present application, the groove is a plurality of grooves, and the plurality of grooves are arranged in the circumferential direction of the heat generating member, and the openings of circumferentially adjacent grooves face in opposite directions.

[0017] According to some embodiments of the present application, the air conditioning device further comprises a coil support, which is formed in a ring shape, and the coil support is sheathed on the heat generating member and is spaced apart from the heat generating member, and the electromagnetic coil is fixed to the coil support.

[0018] According to some embodiments of the present application, the electromagnetic coil is disposed on the outer peripheral wall of the coil support.

[0019] According to some embodiments of the present application, the air conditioning device further comprises a shielding member, which is disposed on the side of the electromagnetic coil away from the heat generating member in the radial direction of the impeller.

[0020] According to some embodiments of the present application, the shielding member and the electromagnetic coil are spaced apart to define an airflow channel.

[0021] According to some embodiments of the present application, the shielding member comprises a magnetic strip holder and a shielding member, the magnetic strip holder is sleeved outside the electromagnetic coil to define the air flow channel, and the shielding member is arranged on the outer peripheral wall of the magnetic strip holder away from the air flow channel and is configured to shield the magnetic field.

[0022] According to some embodiments of the present application, the air conditioning device is configured to guide at least part of the air flow of the second part of the air outlet to the air flow channel.

[0023] The following briefly describes a hair dryer according to another aspect of embodiments of the present application.

[0024] The hair dryer according to the present application comprises the air conditioning device according to any one of the above embodiments, and since the hair dryer according to the present application is provided with the air conditioning device according to the above embodiments, the hair dryer works more reliably.

[0025] According to some embodiments of the present application, the hair dryer further comprises a holder, and the air conditioning device is rotatably arranged on the holder.

[0026] In summary, the air conditioning device according to the present application designs the outer diameter difference between the first part of the fan and the second part of the fan, and takes into account the heat dissipation of the fan to the heating element and the electromagnetic coil or other structures outside the heating element, so that the heat dissipation effect of the fan to the heating element and the electromagnetic coil or other structures outside the heating element can be optimized.

[0027] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0029] Figure 1 is a structural schematic diagram of a hair dryer according to embodiments of the present application.

[0030] Figure 2 is an exploded view of an air conditioning device according to embodiments of the present application.

[0031] Figure 3 is a structural schematic diagram of a fan according to some embodiments of the present application.

[0032] Figure 4 is Figure 3 Another view of the structure in

[0033] Figure 5 is an internal structural diagram of an air conditioning device according to some embodiments of the present application.

[0034] Figure 6 This is a schematic diagram of a wind turbine structure according to other embodiments of the present invention.

[0035] Figure 7 yes Figure 6 Another perspective on the structure.

[0036] Figure 8 This is an internal structural diagram of an air conditioning device according to other embodiments of the present invention.

[0037] Figure label:

[0038] 1. Air conditioning equipment; 1000. Heater; 2. Bracket;

[0039] 20. Heating element; 20a. Groove;

[0040] 30. Wind turbine; 31. First part; 32. Second part; 321. First blade; 321a. Airflow channel;

[0041] 40. Coil support;

[0042] 50. Shielding component; 51. Magnetic strip support;

[0043] 60. Housing; 61. Air inlet; 62. Air outlet;

[0044] 70. Driver components; 80. Power supply board. Detailed Implementation

[0045] 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.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0047] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In related technologies, air conditioning equipment can regulate air temperature. The heating structure and air guiding structure of air conditioning equipment are set separately, which increases the air resistance of the air conditioning equipment. In some existing technologies, the heating structure and air guiding structure are integrated into one place to reduce the overall air resistance. However, the integrated structure has the problem of heat dissipation difficulties, resulting in significant safety hazards for air conditioning equipment.

[0051] The following is for reference. Figures 2-8 An air conditioning device 1 according to an embodiment of the present invention is described.

[0052] like Figures 2-8As shown, the air conditioning device 1 according to the present invention includes: an electromagnetic coil, a heating element 20, and a fan 30. The electromagnetic coil can be energized to generate a magnetic field; the heating element 20 is configured to generate heat under the action of the magnetic field, and the heating element 20 is formed into a ring structure, with the electromagnetic coil disposed on the outside of the heating element 20; the fan 30 includes a first part 31 and a second part 32, the outer diameters of the first part 31 and the second part 32 are different, the first part 31 is located inside the heating element 20, and the second part 32 is located outside the heating element 20. The air conditioning device 1 is configured to guide at least a portion of the airflow from the outlet end of the second part 32 to the outside of the heating element 20. Specifically, the electromagnetic coil and the heating element 20 constitute the temperature regulating structure of the air conditioning device 1. The heating element 20 can generate heat under the action of the magnetic field of the electromagnetic coil, so that the air conditioning device 1 has a temperature regulating function. The heating element 20 can be a conductor or conductive body with free charges that can be driven to generate heat by the magnetic field generated by the coil, for example, it can be iron with magnetic permeability or aluminum with non-magnetic permeability. Electromagnetic induction heating can be achieved through the cooperation of the electromagnetic coil and the heating element 20. The heating element 20 is installed inside the air conditioning device 1, so the heating element 20 can heat the airflow entering the air conditioning device 1 so that the air conditioning device 1 can output hot air.

[0053] Furthermore, the impeller 30 is provided at the temperature regulation structure, which can guide the airflow direction within the air conditioning device 1 and facilitate heat dissipation of the temperature regulation structure. Here, the first part 31 of the impeller 30 is suitable for dissipating heat from the heating element 20, and the second part 32 of the impeller 30 is suitable for dissipating heat from the electromagnetic coil or other structures outside the heating element 20. To optimize the heat dissipation effect of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20, the outer diameters of the first part 31 impeller 30 and the second part 32 impeller 30 can be designed to differ. The first part 31 impeller 30 is located inside the heating element 20 to facilitate heat dissipation of the heating element 20, and the second part 32 impeller 30 is located outside the heating element 20 and is suitable for dissipating heat from the electromagnetic coil or other structures outside the heating element 20.

[0054] Furthermore, the first part 21 and the second part 22 of the impeller 30 are connected axially. Both the first part 21 and the second part 22 are formed with blades. The blades of the first part 21 impeller 30 are located inside the heating element 20, and the blades of the second part 22 impeller 30 are located outside the heating element 20. The difference in the outer diameter of the blades of the first part 21 impeller 30 and the second part 22 impeller 30 is designed to optimize the heat dissipation effect of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20.

[0055] Furthermore, blades are formed on the impeller 30. The blades have a first part and a second part arranged sequentially in the axial direction. The first part is located inside the heating element 20, and the second part is located outside the heating element 20. The first part of the blade is located inside the heating element 20 and is suitable for dissipating heat from the heating element 20. The second part of the blade is located outside the heating element 20 and is suitable for dissipating heat from the electromagnetic coil or other structures outside the heating element 20. The difference in outer diameter between the first part of the blade and the second part of the blade is designed to optimize the heat dissipation effect of the impeller 20 on the heating element 20 and the coil module 30.

[0056] It should be noted that the first and second parts of the blade can be directly connected or arranged at intervals. For example, in some embodiments, the first and second parts of the blade are connected sequentially along the axial direction of the impeller 30; in other embodiments, the first and second parts of the blade are arranged at intervals along the circumferential direction of the impeller 30, in which case the first and second parts of the blade are not directly connected. In other embodiments, other situations are also possible, as long as the first part of the blade can be located inside the heating element 20 and guide the airflow to the inner wall of the heating element 20, and the second part can be located outside the heating element 20 and guide the airflow to the outer side of the heating element 20.

[0057] According to the present invention, the air conditioning device 1 has a design that differs in the outer diameter of the first part 31 impeller 30 and the second part 32 impeller 30, so as to take into account the heat dissipation of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20, and optimize the heat dissipation effect of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20.

[0058] In some embodiments, the heating element 20 and at least a portion of the electromagnetic coil are spaced apart to define a heat dissipation channel. The heating element 20 has an internal mounting channel adapted to accommodate the first portion 31 impeller 30. The heating element 20 itself has a connecting channel that communicates the mounting channel and the heat dissipation channel. The connecting channel on the heating element 20 connects the mounting channel and the heat dissipation channel located between the heating element 20 and the electromagnetic coil. A portion of the air flowing into the mounting channel can flow into the heat dissipation channel through the connecting channel, and the air can exchange heat with the surface of the heating element 20 facing away from the mounting channel within the heat dissipation channel.

[0059] Here, at least part of the airflow from the outlet end of the second part 32 is directed to the outside of the heating element 20. By providing a connecting channel on the heating element 20, and connecting the mounting channel inside the heating element 20 to the heat dissipation channel located between the heating element 20 and the electromagnetic coil, air can flow through both sides of the heating element 20 and exchange heat with the two side surfaces of the heating element 20. This is beneficial to improving the energy utilization rate of the heating element 20, reducing the energy loss of the heating element 20, and improving the heat exchange effect of the heating element 20 on the air. This is beneficial to improving the heating efficiency of the air conditioning equipment 1 on the air. At the same time, it is beneficial to prevent the air conditioning equipment 1 from malfunctioning due to the excessive temperature on the side of the heating element 20 away from the mounting channel, thereby improving the safety of the use of the air conditioning equipment 1.

[0060] Furthermore, the heating element 20 being formed into a ring structure can mean that the heating element 20 is entirely ring-shaped, and a notch can be formed on the heating element 20. At the same time, the heating element 20 can also be in the shape of a ring, a square, etc., depending on the actual needs of the design.

[0061] In some embodiments, the impeller 30 and the heating element 20 are coaxially arranged.

[0062] In some embodiments, the heating element 20 is located inside the electromagnetic coil, the first part 31 impeller 30 is located inside the heating element 20, and the second part 32 impeller 30 is located outside the heating element 20 and inside the electromagnetic coil. The air outlet of the second part 32 impeller 30 can guide the airflow to the electromagnetic coil. At this time, the temperature regulation structure occupies a small space, which facilitates the arrangement of other structures in the air conditioning equipment 1 and also helps to reduce the overall volume of the air conditioning equipment 1.

[0063] In other embodiments, the heating element 20 is located inside the electromagnetic coil, the first part 31 impeller 30 is located inside the heating element 20, and the second part 32 impeller 30 is located outside the heating element 20 and outside the electromagnetic coil. The air outlet of the second part 32 impeller 30 can guide the airflow to the electromagnetic coil. At this time, the area of ​​the second part 32 impeller 30 facing the electromagnetic coil is large, the heat dissipation effect is better, and the safety of using the air conditioning device 1 is also better.

[0064] And, it can be like Figures 6-8 In this configuration, the outer diameter of the first part 31 is larger than the outer diameter of the second part 32. This creates a larger gap between the second part 32 and the electromagnetic coil, facilitating the installation of other structures. Alternatively, it could be as follows: Figures 3-5 In this case, the outer diameter of the second part 32 is larger than that of the first part 31. At this time, the distance between the second part 32 and the electromagnetic coil is closer, which makes the heat dissipation effect of the impeller 30 of the second part 32 on the electromagnetic coil better.

[0065] In some embodiments, the air conditioning device 1 further includes a drive member 70, which is connected to the impeller 30 and adapted to drive the impeller 30 to rotate, so that the impeller 30 can drive airflow.

[0066] According to some embodiments of the present invention, such as Figures 3-5 As shown, the outer diameter of the second part 32 is larger than the outer diameter of the first part 31. Here, at least a portion of the structure of the impeller 30 of the second part 32 may be arranged radially opposite to the electromagnetic coil to guide airflow to the electromagnetic coil; or at least a portion of the structure of the impeller 30 of the second part 32 may be arranged axially opposite to the electromagnetic coil to direct airflow to the electromagnetic coil.

[0067] Furthermore, the second part 32, the wind turbine 30, can be positioned entirely opposite the electromagnetic coil, or only a portion of the second part 32, the wind turbine 30, can be positioned opposite the electromagnetic coil; the design can be tailored to specific needs. Figure 5 The structural orientation shown does not represent the actual orientation of the product.

[0068] In some embodiments, the outer diameter of the second part 32 impeller 30 is larger than the outer diameter of the first part 31 impeller 30, and the outer diameter of the second part 32 impeller 30 is not smaller than the outer diameter of the heating element 20, so as to increase the heat dissipation area of ​​the second part 32 impeller 30 on the electromagnetic coil, improve the heat dissipation effect of the second part 32 impeller 30 on the electromagnetic coil, and thereby improve the safety of use of the air conditioning equipment 1.

[0069] According to some embodiments of the present invention, the impeller 30 is a centrifugal impeller 30, and the electromagnetic coil is located downstream of the radial outlet end of the second part 32. Specifically, the centrifugal impeller 30 has air intake on the inner side in the radial direction and air outlet on the outer side in the radial direction. The electromagnetic coil is located on the outer side in the radial direction of the second part 32 impeller 30 and downstream of the air outlet end of the second part 32 impeller 30, so that the second part 32 impeller 30 can blow air onto the surface of the electromagnetic coil to dissipate heat from the electromagnetic coil.

[0070] More specifically, the centrifugal impeller 30 has an axial air intake and a radial air outlet. By placing the electromagnetic coil on the outer radial side of the impeller 30 in the second part 32, the electromagnetic coil is arranged on the air outlet side of the impeller 30, which facilitates the air flowing out of the impeller 30 to pass through the electromagnetic coil, thereby facilitating the heat dissipation of the electromagnetic coil. At the same time, it facilitates the assembly of the electromagnetic coil and helps to improve the production and assembly efficiency of the air conditioning equipment 1.

[0071] According to some embodiments of the present invention, the second part 32 includes a plurality of first blades 321, and airflow channels 321a are defined between radially adjacent first blades 321 in the radial direction of the impeller 30; in the axial direction of the impeller 30, an electromagnetic coil is disposed opposite to at least a portion of the first blades 321. Specifically, the plurality of first blades 321 of the impeller 30 in the second part 32 define a plurality of airflow channels 321a, and at least a portion of the first blades 321 are disposed opposite to the electromagnetic coil such that the outlet end of the airflow channel 321a faces the electromagnetic coil, so that the impeller 30 in the second part 32 can at least blow air onto the surface of the electromagnetic coil to dissipate heat from the electromagnetic coil.

[0072] Here, "at least part of the first blade 321 is directly opposite the electromagnetic coil" can mean that at least one first blade 321 on the second part 32 impeller 30 is directly opposite the electromagnetic coil in the axial direction of the impeller 30. In this case, the heat exchange area between the second part 32 impeller 30 and the electromagnetic coil is large, which can improve the heat dissipation effect of the second part 32 impeller 30 on the electromagnetic coil, thereby improving the safety of the air conditioning equipment 1.

[0073] According to some embodiments of the present invention, such as Figure 3 As shown, the second part 32 includes a plurality of first blades 321, and the axial height of the first blades 321 gradually decreases in the radial direction of the impeller 30. Here, the first blades 321 have an irregular structure. In some embodiments, the first blades 321 can extend from the radially inner side to the radially outer side in the direction from the impeller 30 of the first part 31 to the impeller 30 of the second part 32. In this case, the radial dimension of the first blades 321 gradually decreases in the direction of airflow, which can reduce the wind resistance when the first blades 321 rotate and guide the airflow from the radially inner side to the radially outer side of the first blades 321. In other embodiments, the first blades 321 can also extend from the radially inner side to the radially outer side in the direction from the impeller 30 of the second part 32 to the impeller 30 of the first part 31. In this case, the radial dimension of the first blades 321 gradually increases in the direction of airflow, which can increase the blowing area of ​​the airflow channel 321a and the electromagnetic coil, thereby improving the heat dissipation effect of the impeller 30 on the electromagnetic coil.

[0074] According to some embodiments of the present invention, such as Figure 4As shown, along the axial direction of the impeller 30, the ratio of the outer diameter of the first part 31 to the outer diameter of the second part 32 ranges from 0.5 to 0.9. Here, the outer diameter of the first part 31 impeller 30 is d, and the outer diameter of the second part 32 impeller 30 is D. The larger the value of d / D, the more consistent the outer diameters of the first part 31 impeller 30 and the second part 32 impeller 30 become, resulting in a greater distance between the second part 32 impeller 30 and the electromagnetic coil, thus worsening the heat dissipation effect of the impeller 30 on the electromagnetic coil. Therefore, the value of d / D should not be too large. Conversely, the smaller the value of d / D, the larger the outer diameter of the second part 32 impeller 30 is compared to the outer diameter of the first part 31 impeller 30. In this case, the impeller 30 requires more radial arrangement space, and the impeller 30 occupies more space. Therefore, the value of d / D should not be too small. In some examples of the present invention, the value of d / D can be between 0.5 and 0.9, so as to reduce the radial arrangement space required for the wind turbine 30 while ensuring the heat dissipation effect of the wind turbine 30 on the electromagnetic coil. For example, the value of d / D can be 0.5, 0.6, 0.75, 0.81, 0.9, etc.

[0075] According to some embodiments of the present invention, the outer diameter of the second part 32 is smaller than the outer diameter of the first part 31. The air conditioning device 1 further includes a guide member, which covers the second part 32 and extends toward the electromagnetic coil to guide the airflow to the electromagnetic coil. Here, the outer diameter of the impeller 30 of the second part 32 is smaller than the outer diameter of the impeller 30 of the first part 31. At this time, there is a large gap between the impeller 30 of the second part 32 and the electromagnetic coil, so that the guide member can be arranged to guide the airflow discharged from the outlet end of the impeller 30 of the second part 32 toward the electromagnetic coil, thereby realizing the heat dissipation of the electromagnetic coil by the impeller 30.

[0076] It is worth mentioning that the guide cover on the second part 32 and extending toward the electromagnetic coil can mean that the guide extends toward the left and / or right end of the electromagnetic coil, and the guide can extend beyond the edge of the electromagnetic coil or not beyond the edge of the electromagnetic coil, depending on the actual situation.

[0077] According to some embodiments of the present invention, such as Figure 4As shown, the axial length of the first part 31 is s, and the total axial length of the impeller 30 is L. The value of s / L ranges from 0.4 to 0.8. It can be understood that the larger the value of s / L (the ratio of the axial length s of the first part 31 impeller 30 to the total axial length L of the impeller 30), the larger the proportion of the first part 31 impeller 30 in the overall impeller 30, resulting in a smaller proportion of the second part 32 impeller 30 in the overall impeller 30. To ensure the length of the second part 32 impeller 30, that is, to ensure the heat dissipation effect of the impeller 30 on the electromagnetic coil, the value of s / L should not be too large. Conversely, the smaller the value of s / L, the smaller the proportion of the first part 31 impeller 30 in the overall impeller 30, and the worse the heat dissipation effect of the impeller 30 on the heat-generating component 20. Therefore, to ensure the heat dissipation effect of the impeller 30 on the heat-generating component 20, the value of s / L should not be too small. In some examples of this invention, the value of s / L can be between 0.4 and 0.8 to simultaneously ensure the heat dissipation effect of the impeller 30 on the heat-generating element 20 and the electromagnetic coil. For example, the value of d / D can be 0.4, 0.6, 0.75, 0.8, etc.

[0078] According to some embodiments of the present invention, such as Figure 2 As shown, at least a portion of the heating element 20 is bent to define a groove 20a. Here, the groove 20a provided on the heating element 20 can reduce the radial distance between the heating element 20 and the first part 31 impeller 30, and increase the heat dissipation area of ​​the heating element 20 and the first part 31 impeller 30, thereby improving the heat dissipation effect of the first part 31 impeller 30 on the heating element 20.

[0079] According to some embodiments of the present invention, such as Figure 2 As shown, the groove 20a extends along the axial direction of the impeller 30 to increase the axial heat dissipation area between the first part 31 impeller 30 and the heat-generating element 20, thereby improving the heat dissipation effect of the first part 31 impeller 30 on the heat-generating element 20. Furthermore, the groove 20a can also guide the airflow blown out by the first part 31 impeller 30 to flow along the heat-generating element 20, further improving the heat dissipation effect.

[0080] Here, the extension of groove 20a along the axial direction of impeller 30 can mean that the extension direction of groove 20a is parallel to the axial direction of impeller 30; or it can mean that the extension direction of groove 20a intersects the axial direction of impeller 30. In this case, groove 20a extends obliquely along the axial direction of impeller 30. The extension direction of groove 20a only needs to be sufficient to guide the airflow along the axial direction of impeller 30. Its specific extension direction can be designed according to actual needs.

[0081] According to some embodiments of the present invention, such as Figure 2As shown, there are multiple grooves 20a, which are arranged circumferentially along the heating element 20. The openings of adjacent circumferential grooves 20a face opposite directions. In some embodiments, the heating element 20 has multiple protrusions in its axial cross-section. These protrusions are arranged sequentially in the circumferential direction of the heating element 20. Two adjacent protrusions protrude radially inward and outward, respectively. The protrusion protruding radially inward defines a groove 20a that opens radially outward on its radially outer side, while the protrusion protruding radially outward defines a groove 20a that opens radially inward on its radially inner side. In other words, the openings of two adjacent circumferential grooves 20a face opposite directions.

[0082] According to some embodiments of the present invention, such as Figure 2 As shown, the air conditioning device 1 also includes a coil support 40, which is ring-shaped and sleeved over the heating element 20, spaced apart from it. An electromagnetic coil is fixed to the coil support 40. Specifically, the electromagnetic coil is fixed to the coil support 40, which is ring-shaped and sleeved over the heating element 20. The coil support 40 is correspondingly positioned to the heating element 20 and is located outside the heating element 20 in the radial direction of the impeller 30. This arrangement helps ensure effective cooperation between the electromagnetic coil and the heating element 20. When energized, the electromagnetic coil generates a magnetic field, enabling the heating element 20 to achieve electromagnetic induction heating, thus providing an efficient heating method for the air. Furthermore, the coil support 40 provides stable support for the electromagnetic coil, improving its assembly stability.

[0083] According to some embodiments of the present invention, an electromagnetic coil is disposed on the outer peripheral wall of the coil support 40. In some embodiments, the coil support 40 is formed in a cylindrical shape, and a plurality of winding protrusions are provided on the outer peripheral wall of the coil support 40. The plurality of winding protrusions are arranged at intervals in the axial direction of the impeller 30, and a winding groove for placing the electromagnetic coil is formed between two adjacent winding protrusions. The electromagnetic coil can be disposed on the coil support 40 through the plurality of winding grooves to improve the assembly stability of the electromagnetic coil.

[0084] According to some embodiments of the present invention, such as Figure 2 As shown, the air conditioning device 1 also includes a shield 50, which is located on the side of the electromagnetic coil away from the heating element 20 in the radial direction of the impeller 30. Specifically, when the electromagnetic coil is energized, a magnetic field is generated on the side of the electromagnetic coil away from the heating element 20 in the radial direction of the impeller 30, causing magnetic field leakage. By setting the shield 50 on the side of the electromagnetic coil away from the heating element 20, the leakage of the magnetic field on this side is reduced, and the magnetic field strength on the side of the electromagnetic coil close to the heating element 20 is increased, thereby improving the heating effect of the heating element 20 and thus improving the heating efficiency of the air conditioning device 1.

[0085] According to some embodiments of the present invention, the shield 50 and the electromagnetic coil are spaced apart to define an airflow channel. Specifically, the shield 50 and the electromagnetic coil are spaced apart to define the airflow channel. While the impeller 30 drives the airflow in the airflow channel, the shield 50 can restrict the airflow from continuing to diverge radially, which is beneficial to improving the efficiency of the airflow flowing along the axial direction of the impeller 30, thereby improving the efficiency of the air conditioning equipment 1 in outputting hot air.

[0086] According to some embodiments of the present invention, the shielding member 50 includes a magnetic strip support 51 and a shielding member. The magnetic strip support 51 is sleeved outside the electromagnetic coil to define an airflow channel. The shielding member is disposed on the outer peripheral wall of the magnetic strip support 51 opposite to the airflow channel and is configured to shield the magnetic field. In some embodiments, the magnetic strip support 51 is formed in a ring shape and is sleeved radially outside the electromagnetic coil in the radial direction of the impeller 30. The magnetic strip support 51 is used to mount the shielding member 50. By providing the magnetic strip support 51, the assembly of the shielding member 50 is facilitated, and the assembly reliability of the shielding member 50 is improved.

[0087] In some embodiments, the shielding component 50 is a magnetically conductive material component.

[0088] In some embodiments, the shielding component is constructed from at least one of neodymium iron boron permanent magnets, ferrite permanent magnets, silicon steel, soft magnetic metal powder cores, and soft ferrite magnets. Here, the shielding component is generally a magnetic material. Magnetic materials can be classified according to their function into permanent magnet materials, soft magnetic materials, and functional magnetic materials. Currently, the most commonly used permanent magnet materials in new energy vehicles are neodymium iron boron permanent magnets and ferrite permanent magnets, as well as soft magnetic materials such as silicon steel, soft magnetic metal powder cores, and soft ferrite magnets. The appropriate material can be selected based on actual needs.

[0089] In some embodiments, the shielding member 50 includes a plurality of permanent magnets spaced apart circumferentially along the electromagnetic coil. By spaced apart a plurality of permanent magnets circumferentially along the electromagnetic coil, the shielding member 50 improves the effect of shielding the electromagnetic coil from magnetic field leakage on the side away from the heating element 20. Furthermore, the permanent magnets have high stability and can maintain their magnetism for a long time, which helps to extend the service life of the shielding member 50.

[0090] According to some embodiments of the present invention, the air conditioning device 1 is configured to direct at least a portion of the airflow from the outlet end of the second part 32 to an airflow channel, through which the airflow blown by the impeller 30 flows to exchange heat with the electromagnetic coil, thereby achieving heat dissipation of the electromagnetic coil by the impeller 30.

[0091] In some embodiments, the air conditioning device 1 further includes a housing 60, which has an air inlet 61 and an air outlet 62. The housing 60 contains an air duct space connecting the air inlet 61 and the air outlet 62. External air can enter the air duct space through the air inlet 61 and then exit through the air outlet 62. The temperature regulating structure of the air conditioning device 1 is disposed within the air duct space to electromagnetically induction heat the airflow passing through the air duct space, enabling the air conditioning device 1 to output hot air.

[0092] In some embodiments, the air conditioning device 1 further includes an electronic control component, which is disposed within the air duct space and electrically connected to an electromagnetic coil. The electronic control component can detect the air temperature and control the heating power of the heating element 20 according to the detected air temperature. The impeller 30 is disposed within the air duct space to guide the air introduced from the air inlet 61 to the air outlet 62. The electronic control component is located on the air outlet side of the impeller 30. Since both the electronic control component and the heating element 20 are disposed within the air duct space, when air flows within the air duct space, the air can simultaneously flow through the electronic control component and the heating element 20. The air flowing through the heating element 20 is heated by the heating element 20 to increase the air temperature. In addition, the electronic control component generates heat when it is working. Therefore, when air flows through the electronic control component, the air carries away the heat generated by the electronic control component to reduce the temperature of the electronic control component, reduce the risk of overheating of the electronic control component, and help ensure the normal operation of the electronic control component. At the same time, it is beneficial to further increase the temperature of the hot air output by the air conditioning device 1 and improve the heating efficiency of the air conditioning device 1.

[0093] In some embodiments, such as Figures 6-8 As shown, there is a large gap between the second part 32 (wind turbine 30) and the electromagnetic coil, allowing for the installation of the electrical control components of the air conditioning device 1. Here, the electrical control components generally include a power supply board 80. To make the air conditioning device 1 compact, the power supply board 80 needs to be designed as a ring to save space. The radius of the lower edge of the power supply board 80 is R1, with a value ranging from 60mm to 90mm. The radius of the upper edge of the power supply board 80 is R2, with a value ranging from 110mm to 140mm. The radius of the wind turbine 30 is Rb, with a value ranging from 70mm to 150mm. Since R1 is smaller than Rb, a portion of the wind turbine 30 needs to be circumferentially cut to achieve a design that avoids the power supply board 80. Furthermore, Figure 8 The structural orientation shown does not represent the actual orientation of the product.

[0094] Furthermore, to prevent interference between the wind turbine 30 and the power supply board 80 during operation, a safe distance needs to be set. For example... Figure 7As shown, in the axial direction, the minimum axial distance between the side of the power supply board 80 with fewer capacitors and the impeller 30 is s1; the minimum axial distance between the side of the power supply board 80 with more capacitors and the impeller 30 is s2. Neither s1 nor s2 can be less than 8mm. The minimum radial distance between the power supply board 80 and the impeller 30 is s3, which also cannot be less than 8mm. This design avoids interference between the impeller 30 and the power supply board 80 during operation.

[0095] Specifically, the power board 80 and the electronic control components disposed on the power board 80 constitute the electronic control assembly of the air conditioning device 1. At least a portion of the power board 80 is located in the gap between the impeller 30 of the second part 32 and the electromagnetic coil. The power board 80 serves as the mounting carrier for the electronic control components, which are arranged on and electrically connected to the power board 80. By placing at least a portion of the power board 80 in the gap between the impeller 30 of the second part 32 and the electromagnetic coil, the structural compactness of the electronic control assembly and the impeller 30 can be improved, which helps to reduce the space occupied by the power board 80 within the housing 60 and facilitates the miniaturization design of the air conditioning device 1. When the gap between the impeller 30 of the second part 32 and the electromagnetic coil is large enough, the entire power board 80 can be placed within the gap. When the size of the gap between the impeller 30 of the second part 32 and the electromagnetic coil is insufficient to accommodate the entire power board 80, the portion of the power board 80 closest to the impeller 30 can be placed in the gap. The specific portion of the power board 80 located within the gap can be determined according to actual production requirements and is not specifically limited here.

[0096] Furthermore, the electronic control components may include power devices (IGBTs and bridge rectifiers), capacitors, inductors, resistors, and transformers. In addition, the power board 80 is also provided with signal sockets and power input interfaces. The signal sockets are used to connect external devices (such as sensors, controllers, or other electronic devices) to facilitate data exchange and communication. The power input interfaces are used to connect to the power supply system of the power board 80 to provide the power required for the power board 80 to operate, ensuring that all components on the power board 80 can operate normally.

[0097] In some embodiments, the thickness direction of the power board 80 is parallel to the axial direction of the impeller 30. That is, the electronic control component can be vertically inserted into the gap between the second part 32 impeller 30 and the electromagnetic coil in a direction perpendicular to the rotation axis of the impeller 30. This helps to reduce the size of the gap in the axial direction of the impeller 30, thereby reducing the space occupied by the gap in the axial direction of the impeller 30, and thus reducing the impact on the air output efficiency of the impeller 30 due to the gap being provided on the impeller 30.

[0098] Furthermore, the power board 80 is located within the gap between the impeller 30 and the electromagnetic coil in the second part 32, and its surface facing the impeller 30 is formed as an arc surface that matches the impeller 30. For example, the gap extends along the circumferential direction of the impeller 30, and in the radial direction of the impeller 30, the surface of the power board 80 opposite to the impeller 30 is formed as an arc surface with the same shape as the outer peripheral wall of the impeller 30. This facilitates the placement of the power board 80 within the gap between the impeller 30 and the electromagnetic coil in the second part 32, thereby improving the space-saving effect required for arranging the power board 80. The "outer peripheral wall of the impeller 30" referred to here means the side wall of the impeller 30 opposite to the housing 60 in the radial direction of the impeller 30.

[0099] In the radial direction of the impeller 30, the surface of the power supply board 80 away from the impeller 30 matches the shape of the inner peripheral wall of the housing 60. The "inner peripheral wall of the housing 60" refers to the side wall of the housing 60 opposite to the impeller 30 in the radial direction. For example, the housing 60 can be formed as a cylinder, and correspondingly, the inner peripheral wall of the housing 60 is an arc-shaped wall. In the radial direction of the impeller 30, the surface of the power supply board 80 opposite to the housing 60 is formed as an arc with the same shape as the inner peripheral wall of the housing 60. This achieves shape matching between the surface of the power supply board 80 away from the impeller 30 and the inner peripheral wall of the housing 60, which is beneficial for increasing the area of ​​the power supply board 80 while saving space required for its arrangement.

[0100] In some embodiments, the power board 80 can be constructed as a fan-shaped annular plate to reduce the space required for its arrangement. Specifically, in the radial direction of the impeller 30, the surface of the power board 80 opposite to the impeller 30 is formed as an arc surface matching the impeller 30, and the surface of the power board 80 opposite to the housing 60 matches the inner peripheral wall of the housing 60. This increases the area of ​​the power board 80, ensuring sufficient installation space for the electronic control components and saving space required for its arrangement, thus facilitating the miniaturization of the air conditioning device 1. Furthermore, in the radial direction of the impeller 30, the radius (which can also be understood as the inner diameter of the power board 80) of the side of the power board 80 closest to the impeller 30 is defined as R1, with a size range of 60mm to 90mm. The radius (which can also be understood as the outer diameter of the power board 80) of the side of the power board 80 furthest from the impeller 30 is defined as R2, with a size range of 110mm to 140mm, ensuring that the dimensions of the power board 80 meet the installation requirements of the electronic control components.

[0101] The radius Rb of the impeller 30 is typically in the range of 70mm to 150mm. Since R1 < Rb, the gap between the impeller 30 and the electromagnetic coil in the second part 32 can allow the electronic control components to pass through, making it easier to integrate the electronic control components with the impeller 30, improving the structural compactness of the electronic control components and the impeller 30, and reducing the space occupied by the electronic control components within the housing 60, thereby facilitating the miniaturization design of the air conditioning equipment 1.

[0102] In some embodiments, at least some of the electronic control components are located on the side of the power board 80 facing the air inlet 61. When the electronic control components are working, they generate heat. By positioning the electronic control components on the side of the power board 80 facing the air inlet 61, the low-temperature external air entering the housing 60 through the air inlet 61 can preferentially flow over the electronic control components and dissipate heat, thereby improving the heat dissipation efficiency of the electronic control components, reducing the risk of overheating, and extending the service life of the air conditioning equipment 1. Optionally, all electronic control components can be positioned on the side of the power board 80 facing the air inlet 61, or only some of the electronic control components can be positioned on the side of the power board 80 facing the air inlet 61. The specific arrangement of the electronic control components can be determined according to actual production requirements and is not specifically limited here.

[0103] The following is a brief description of the structure of the air conditioning device 1 according to an embodiment of the present invention, and the assembly method of the air conditioning device 1.

[0104] Assembly Method 1: The heating element 20 is fixedly connected to the coil support 40 with an electromagnetic coil. The shielding element 50 is fixedly installed on the magnetic strip support 51. The magnetic strip support 51 is sleeved on the radial outer side of the coil support 40 and fixedly connected to the coil support 40. The impeller 30 can be positioned in the center area of ​​the heating element 20 by hand. The electronic control component is arranged in the clearance space 121 and fixedly connected to the shielding support 150. This realizes the modular assembly of the heating element 20, the coil support 40, the electronic control component, the shielding element 50, the magnetic strip support 51 and the impeller 30. Then, the above components are placed in the housing 60 and the coil support 40 is further fixedly connected to the housing 60, so that the impeller 30 is connected to the housing 60. Finally, the housing 60 is sealed to complete the assembly of the air conditioning equipment 1.

[0105] In order to ensure the assembly reliability of the components inside the housing 60 with the housing 60, the magnetic strip bracket 51 can be further connected to the housing 60 to reduce the risk of the structural components inside the housing 60 falling off the housing 60.

[0106] Assembly Method 2: First, the heating element 20 is fixedly installed inside the housing 60. Then, the coil bracket 40 with the electromagnetic coil is fitted onto the radial outer side of the heating element 20, and the coil bracket 40 is fixedly connected to the housing 60. Next, the magnetic strip bracket 51 with the shielding element 50 is fitted onto the radial outer side of the coil bracket 40, and the magnetic strip bracket 51 is fixedly connected to the housing 60. Then, the impeller 30 is positioned in the central area of ​​the heating element 20 and connected to the housing 60. The electrical control components can be installed on the magnetic strip bracket 51 or the housing 60. Finally, the housing 60 is sealed to complete the assembly of the air conditioning equipment 1.

[0107] Optionally, the above-mentioned fixed connection method can be to fix the components together by means of threaded connectors, so as to facilitate the disassembly, maintenance and cleaning of the air conditioning equipment 1. Of course, it is understood that the fixed connection method includes, but is not limited to, connecting by threaded connectors, or by snap-fit, etc. The specific fixed connection method can be determined according to the actual production requirements, and is not specifically limited here.

[0108] In the air conditioning device 1 designed according to the present invention, the airflow outside the air conditioning device 1 enters the interior of the housing 60 through the air inlet on the housing 60, and the airflow flows radially through the second part 32 wind turbine 30 and the first part 31 wind turbine 30 in sequence under the drive of the centrifugal impeller 30.

[0109] The airflow blown by the second part 32 impeller 30 flows over the outside of the heating element 20. For example, this airflow can be blown directly towards the electromagnetic coil in the radial direction, or towards the gap between the heating element 20 and the electromagnetic coil, so as to dissipate heat on the surface of the electromagnetic coil and / or the heating element 20 facing the electromagnetic coil. This heat dissipation airflow can be blown out through the air outlet on the housing. The airflow blown by the first part 31 impeller 30 can be blown towards the surface of the heating element 20 away from the electromagnetic coil, so as to dissipate heat on the surface of the heating element 20 away from the electromagnetic coil. This airflow can flow into the heat dissipation channel through the connecting channel opened on the heating element 20, so as to merge with the airflow blown by the second part 32 impeller 30 and be blown out through the air outlet on the housing, or directly blown out through the air outlet on the housing.

[0110] The following is a brief description of the heater 1000 according to the present invention.

[0111] The heater 1000 according to the present invention includes the air conditioning device 1 described in any of the above embodiments. Since the heater 1000 according to the present invention is provided with the air conditioning device 1 of the above embodiments, the heater 1000 operates more reliably.

[0112] According to some embodiments of the present invention, such as Figure 1As shown, the heater 1000 also includes a bracket 2, on which the air conditioning device 1 is rotatably mounted. Specifically, the bracket 2 serves as a mounting carrier for the air conditioning device 1, supporting it. By rotatably mounting the air conditioning device 1 on the bracket 2, the air outlet direction of the heater 1000 can be adjusted, which helps improve the heating effect and heating uniformity of the heater 1000, thereby enhancing the user experience.

[0113] In some embodiments, the bracket 2 of the heater 1000 is rotatably connected to the base of the heater 1000. The base of the heater 1000 is provided with a drive unit for driving the bracket 2 to swing in the left-right direction. The bracket 2 of the heater 1000 forms an installation space, and the inner wall of the installation space is provided with a connecting part. The air conditioning device 1 is rotatably connected to the connecting part and accommodated in the installation space. For example, the connecting part of the bracket 2 of the heater 1000 clamps the air conditioning device 1 in the left-right direction and drives the air conditioning device 1 to swing up and down. Optionally, the up-and-down swing of the air conditioning device 1 can also be in the form of a guide rail. Alternatively, the bracket 2 of the heater 1000 can be disposed on the base of the heater 1000, and the drive unit can be disposed on the bracket 2 of the heater 1000 and connected to the air conditioning device 1 to drive the air conditioning device 1 to swing up and down or left and right.

[0114] In some embodiments, the heater 1000 has a cold air operation mode and a warm air operation mode. The user can choose whether to operate in cold air mode or warm air mode to ensure that the heater can provide appropriate air output according to the user's needs, which helps to improve the functionality of the heater.

[0115] Based on this, the operating mode of the heater 1000 can be controlled by controlling the operating status of the fan wheel 30 and the heating element 20. When the heater 1000 is in the cold air operating mode, the fan wheel 30 can be started to generate cold air, while the heating element 20 does not work, so as to ensure that the heater 1000 can provide pure cold air, so that the heater 1000 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 1000.

[0116] It should be noted that when the heater 1000 is started and selected to run in cold air mode, there is no action to stop the heating element 20. However, if the heater 1000 switches from warm air mode to cold air mode, there is an action to stop the heating element 20.

[0117] When the heater 1000 is in the warm air operation mode, the fan wheel 30 and the heating element 20 work simultaneously to ensure that the heater 1000 can output hot air, so that the heater 1000 can be used to heat the environment with low temperature.

[0118] In some embodiments, the cold air operation mode of the heater 1000 needs to ensure that the output air speed of the heater 1000 is high enough. That is, the number of speed settings in the cold air operation mode of the heater 1000 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 1000 can have 8 speed settings in the cold air operation mode and 3 speed settings in the warm air operation mode. When the heater 1000 switches directly from the 3rd speed setting in the cold air mode to the warm air mode, the heater 1000 operates at the maximum speed setting (i.e., the third speed setting) in the warm air mode, and the output heat of the heater 1000 is most efficient.

[0119] In summary, the air conditioning device 1 of the present invention has a design that differentiates the outer diameters of the first part 31 impeller 30 and the second part 32 impeller 30, taking into account the heat dissipation of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20, thereby optimizing the heat dissipation effect of the impeller 30 on the heating element 20 and the electromagnetic coil or other structures outside the heating element 20.

[0120] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0121] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. An air conditioning apparatus characterized by comprising: The air conditioning device comprises: an electromagnetic coil, which is electrically energizable to generate a magnetic field; a heat generating member, which is configured to generate heat under the action of the magnetic field, the heat generating member being formed in a ring structure, and the electromagnetic coil being arranged outside the heat generating member; a wind wheel, which comprises a first part and a second part, the first part and the second part having different outer diameters, the first part being located inside the heat generating member, and the second part being located outside the heat generating member, and the air conditioning device being configured to guide at least part of the air flow at the air outlet end of the second part to the outside of the heat generating member.

2. The air conditioning apparatus according to claim 1, wherein The outer diameter of the second part is greater than the outer diameter of the first part.

3. The air conditioning apparatus according to claim 2, wherein The wind wheel is a centrifugal wind wheel, and the electromagnetic coil is located downstream of the radial air outlet end of the second part.

4. The air conditioning apparatus according to claim 3, wherein The second part comprises a plurality of first blades, and an air flow passage is defined between radially adjacent first blades in the radial direction of the wind wheel. In the axial direction of the wind wheel, the electromagnetic coil is arranged opposite to at least part of the first blades.

5. The air conditioning apparatus according to claim 2, wherein The second part comprises a plurality of first blades, and the axial height of the first blades gradually decreases in the radial direction of the wind wheel.

6. The air conditioning apparatus according to claim 2, wherein In the axial direction of the wind wheel, the ratio of the outer diameter of the first part to the outer diameter of the second part is in the range of 0.5 to 0.

9.

7. The air conditioning apparatus according to claim 1, wherein The outer diameter of the second part is less than the outer diameter of the first part. The air conditioning device further comprises a guide member, which is arranged outside the second part and extends towards the electromagnetic coil to guide the air flow to the electromagnetic coil.

8. The air conditioning apparatus according to claim 1, wherein The axial length of the first part is s, and the total axial length of the wind wheel is L, and the ratio of s / L is in the range of 0.4 to 0.

8.

9. The air conditioning apparatus according to claim 1, wherein At least part of the heat generating member is bent to define a groove.

10. The air conditioning apparatus according to claim 9, wherein The groove extends in the axial direction of the wind wheel.

11. The air conditioning apparatus according to claim 10, wherein The groove is a plurality of grooves, and the plurality of grooves are arranged circumferentially around the heat generating member, and the openings of circumferentially adjacent grooves face in opposite directions.

12. The air conditioning apparatus according to any one of claims 1-11, wherein, Further comprising a coil support, which is formed in a ring structure, the coil support being arranged outside the heat generating member and spaced apart from the heat generating member, and the electromagnetic coil being fixed to the coil support.

13. The air conditioning apparatus according to claim 12, wherein The electromagnetic coil is arranged on the outer peripheral wall of the coil support.

14. The air conditioning apparatus according to claim 12, wherein Further comprising a shielding member, which is arranged on the side of the electromagnetic coil away from the heat generating member in the radial direction of the wind wheel.

15. The air conditioning apparatus according to claim 14, wherein The shielding member and the electromagnetic coil are spaced apart to define an air flow channel.

16. The air conditioning apparatus according to claim 15, wherein The shielding member comprises a magnetic strip support and a shielding member, the magnetic strip support being arranged outside the electromagnetic coil to define the air flow channel, and the shielding member being arranged on the outer peripheral wall of the magnetic strip support away from the air flow channel and being configured to shield the magnetic field.

17. The air conditioning apparatus according to claim 15, wherein The air conditioning device is configured to guide at least part of the air flow at the air outlet end of the second part to the air flow channel.

18. A fan heater, characterised in that, The air conditioning device comprises the air conditioning device according to any one of claims 1-17.

19. The fan heater of claim 18, wherein, Further comprising a support, and the air conditioning device is rotatably arranged on the support.

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