Air conditioner

Abstract

The application discloses an air conditioner and relates to the technical field of air conditioning equipment, wherein the air conditioner comprises a casing, a fresh air module, a driving motor and a transmission wheel; a main air wheel is arranged in the casing; the fresh air module is arranged on the casing and adjacent to the end of the main air wheel, and the fresh air module is provided with a fresh air wheel; the driving motor is configured as an outer rotor motor, the outer rotor motor comprises an outer rotor and an inner stator, the outer rotor is sleeved on the outer periphery of the inner stator, and the driving motor is drivingly connected with one of the main air wheel and the fresh air wheel; the transmission wheel is drivingly connected with the other one of the fresh air wheel and the main air wheel, and the transmission wheel and the outer rotor are magnetically coupled and driven. The technical scheme provided by the application aims to simplify the structure of the air conditioner and reduce the operation noise of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to an air conditioner. Background Technology

[0002] With the integration and improvement of air conditioner functions, air conditioners equipped with fresh air functions are becoming more and more common. In related technologies, for air conditioners with fresh air functions, a complex transmission mechanism is usually set up to control the transmission of the fresh air impeller that delivers fresh air and the main impeller that delivers cold or hot air. However, such transmission mechanisms have many parts, which increases the size of the whole unit and also increases the operating noise of the air conditioner. Summary of the Invention

[0003] The main objective of this invention is to propose an air conditioner that simplifies the structure of the air conditioner and reduces operating noise.

[0004] To achieve the above objectives, the air conditioner proposed in this invention includes:

[0005] The housing contains the main impeller;

[0006] A fresh air module is installed on the housing and is located near the end of the main impeller. The fresh air module is equipped with a fresh air impeller.

[0007] A drive motor, configured as an external rotor motor, comprising an external rotor and an inner stator, the external rotor being sleeved on the outer periphery of the inner stator, the drive motor driving one of the main impeller and the fresh air impeller; and

[0008] A drive wheel is connected to the other of the fresh air impeller and the main air impeller, and the drive wheel and the outer rotor are driven by magnetic coupling.

[0009] In one embodiment, the drive wheel is configured as a magnetic wheel, the outer rotor is provided with a magnetic ring, and the drive wheel is located on the outer periphery of the outer rotor and is radially opposite to the magnetic ring of the outer rotor.

[0010] In one embodiment, the outer rotor is further provided with a plastic coating layer extending circumferentially along the outer circumference, the plastic coating layer being distributed along the axial direction of the drive motor at the end of the magnetic ring.

[0011] In one embodiment, in the radial direction of the outer rotor, the outer periphery of the magnetic ring protrudes above or is flush with the outer periphery of the plastic coating layer.

[0012] In one embodiment, the transmission wheel and the magnetic ring are arranged radially at intervals along the outer rotor, and the resulting arrangement gap L satisfies: 0.1mm≤L≤2mm.

[0013] In one embodiment, the magnetic ring of the outer rotor and the inner stator are driven by magnetic coupling.

[0014] In one embodiment, the magnetic ring includes an annular mounting portion and a plurality of magnets. The mounting portion has a plurality of magnet slots distributed along the circumference of the outer rotor. One magnet is positioned and mounted in one of the magnet slots. The magnetic poles of the magnets are distributed along the radial direction of the outer rotor.

[0015] In one embodiment, the magnetic ring is integrally formed by molding or injection molding.

[0016] In one embodiment, the magnetic wheel includes a support ring and permanent magnets, with multiple permanent magnets arranged along the outer peripheral surface of the corresponding support ring.

[0017] In one embodiment, the magnetic wheel is configured to be integrally formed from a plurality of permanent magnets.

[0018] In one embodiment, the number of permanent magnets on the magnetic wheel is different from the number of magnets on the outer rotor.

[0019] In one embodiment, the fresh air module is located at the end of the main impeller, the drive motor is located between the main impeller and the fresh air impeller, the motor output shaft of the drive motor is connected to the outer rotor, and the motor output shaft is drivenly connected to the main impeller.

[0020] In one embodiment, the diameter of the drive wheel is different from the outer diameter of the outer rotor.

[0021] In one embodiment, the air conditioner is configured as a modular air conditioner or a split air conditioner, or the air conditioner is configured as the indoor unit of a split air conditioner.

[0022] The technical solution of this invention provides power to the main fan and the fresh air fan by a drive motor. The drive motor is configured as an external rotor motor, and the external rotor and the transmission wheel of the external rotor motor are magnetically coupled, causing the main fan and the fresh air fan to rotate synchronously under the control of the external rotor. This achieves synchronous driving of the main fan and the fresh air fan with the cooperation of one drive motor and one transmission wheel. On the one hand, it eliminates the need for two separate motors to drive the main fan and the fresh air fan, saving space required for motor installation, simplifying the internal structure of the air conditioner, and reducing operating noise. On the other hand, the drive motor transmits power to one of the fresh air fan and the main fan through the magnetic coupling of the external rotor and the transmission wheel, and the drive motor is also connected to the other, reducing the number of transmission components between the drive motor and the transmission wheel, simplifying the transmission structure, and avoiding the noise of traditional mechanical transmission connections. This further reduces the operating noise of the air conditioner and reduces the structural volume of the drive motor controlling the rotation of the main fan and the fresh air fan, thereby improving the compactness of the air conditioner and the user experience. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the air conditioner provided by the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of a central air conditioner with the casing removed;

[0026] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 for Figure 2 A schematic diagram of the structure of the fresh air module, transmission wheel, drive motor and main fan wheel in operation;

[0028] Figure 5 for Figure 2 A schematic diagram of the drive motor.

[0029] Explanation of icon numbers:

[0030] 100. Housing; 200. Main impeller; 300. Fresh air module; 310. Fresh air impeller; 400. Drive motor; 410. Outer rotor; 411. Magnetic ring; 412. Plastic coating layer; 420. Motor output shaft; 500. Transmission wheel.

[0031] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0035] In existing technologies, air conditioners with fresh air functions typically house a heat exchanger and a fresh air module within the casing. The heat exchanger forms an air duct containing a main fan, which rotates under the drive of a motor. This allows heat from the heat exchanger to flow out through the air outlet of the duct, achieving indoor heat exchange. The fresh air module includes a fresh air housing, a fresh air impeller, and a fresh air impeller motor. A fresh air duct is formed within the housing, and the fresh air impeller is installed within it and rotates under the drive of the motor, drawing fresh outdoor air into the room through the fresh air vents. The main fan and motor are connected, as are the fresh air impeller and motor, allowing for independent control of both. However, the presence of two motors results in a heavier and larger air conditioner. Furthermore, the independent operation of the two motors inevitably leads to moments when they operate simultaneously, resulting in significant noise and a poor user experience. In another related technology, a single motor drives both the main fan and the fresh air fan simultaneously through a transmission mechanism. This transmission mechanism can consist of multiple gears working together, with power output via the motor's output shaft. However, this type of transmission mechanism is quite complex, with many gear components that require a certain amount of space inside the air conditioner housing. Furthermore, the numerous gear components in the transmission mechanism generate noise during operation, which can negatively impact the user experience.

[0036] This invention proposes an air conditioner.

[0037] Please refer to Figures 1 to 3 In one embodiment of the present invention, the air conditioner includes:

[0038] The casing 100 contains a main impeller 200.

[0039] Fresh air module 300 is installed on housing 100 and located near the end of main impeller 200. Fresh air module 300 is provided with fresh air impeller 310.

[0040] Drive motor 400, configured as an external rotor motor, includes an external rotor 410 and an inner stator, the external rotor 410 being sleeved on the outer periphery of the inner stator, and drive motor 400 driving one of the main impeller 200 and the fresh air impeller 310; and

[0041] The transmission wheel 500 is connected to the other of the fresh air impeller 310 and the main impeller 200. The transmission wheel 500 and the outer rotor 410 are driven by magnetic coupling.

[0042] The technical solution of the present invention provides power to the main impeller 200 and the fresh air impeller 310 through a drive motor 400. The drive motor 400 is configured as an external rotor motor. The external rotor 410 of the external rotor motor and the transmission wheel 500 are magnetically coupled to drive the main impeller 200 and the fresh air impeller 310 synchronously under the control of the external rotor 410. Thus, the synchronous drive of the main impeller 200 and the fresh air impeller 310 can be achieved by the cooperation of a drive motor 400 and a transmission wheel 500. Thus, on the one hand, it eliminates the need for two separate motors to drive the main fan 200 and the fresh air fan 310, saving space required for motor installation, simplifying the internal structure of the air conditioner, and reducing operating noise. On the other hand, the drive motor 400 transmits power to one of the fresh air fan 310 and the main fan 200 through magnetic coupling between the outer rotor 410 and the transmission wheel 500, and the drive motor 400 is also connected to the other, reducing the number of transmission components between the drive motor 400 and the transmission wheel 500, simplifying the transmission structure, and avoiding noise in traditional mechanical transmission connections. This further reduces the operating noise of the air conditioner and also reduces the structural volume of the drive motor 400 controlling the rotation of the main fan 200 and the fresh air fan 310, thereby improving the compactness of the air conditioner and the user experience.

[0043] It can be understood that a main air duct is formed within the casing 100, and a heat exchanger is configured upstream or downstream of the main fan 200. When the air conditioner is in cooling mode, the heat exchanger acts as an evaporator to generate cold air; when the air conditioner is in heating mode, the heat exchanger acts as a condenser to generate hot air. During the rotation of the main fan 200, a negative pressure is created at the main fan 200, which directs the airflow passing through the heat exchanger into the room via the main air duct, thereby achieving indoor air conditioning. Of course, the air conditioning referred to here is not limited to temperature control. If the casing 100 has a humidity module, the main fan 200 can also direct humidified gas into the room via the main air duct. Similarly, a fresh air duct is formed within the fresh air module 300, and the air inlet of the fresh air duct is connected to the outside. After processing by the fresh air module 300 or the outdoor equipment, the fresh air is delivered into the room from the fresh air inlet along the fresh air duct under the action of the fresh air impeller 310, thereby improving the freshness of the indoor air. Alternatively, the housing 100 may only house components such as a heat exchanger and main fan 200, with the fresh air module 300 connected in parallel to the housing 100, or the fresh air module 300 may be installed inside the housing 100. Furthermore, the drive motor 400 may be installed in the housing 100, or it may also be installed in the fresh air module 300, or the drive motor 400 may be connected to both the housing 100 and the fresh air module 300, to ensure the installation stability of the drive motor 400.

[0044] It should be noted that the phrase "the end of the fresh air module 300 adjacent to the main impeller 200" means that the fresh air impeller 310 can be located on the end of the main impeller 200 or outside the end of the main impeller 200, with the end of the main impeller 200 as the center and half the axial length of the main impeller 200 as the radius. The drive motor 400 is located in the space between the main impeller 200 and the fresh air impeller 310. The axes of the three can be coaxial or distributed off-axis. In this embodiment, the drive motor 400 and the fresh air module 300 are located adjacent to the same end of the main impeller 200. The outer rotor 410 can rotate through the output shaft to drive one of the fresh air impeller 310 and the main impeller 200 to rotate. During the rotation of the outer rotor 410, the outer rotor 410 also engages with the transmission wheel 500 through magnetic coupling, thereby driving the other of the fresh air impeller 310 and the main impeller 200 to rotate. The transmission wheel 500 can directly control the rotation of the fresh air impeller 310 or the main impeller 200, or it can control the rotation of the fresh air impeller 310 or the main impeller 200 through another transmission component. Similarly, the output shaft of the outer rotor 410 can directly control the rotation of the main impeller 200 or the fresh air impeller 310, or it can control the rotation of the fresh air impeller 310 or the main impeller 200 through another transmission component.

[0045] Without loss of generality, regarding the magnetic coupling relationship between the outer rotor 410 and the transmission wheel 500, the outer rotor 410 can utilize a magnet that engages with the inner stator's magnetic field to perform magnetic coupling transmission with the transmission wheel 500. Alternatively, the outer rotor 410 can have an independent magnetic ring on its outer periphery for magnetic coupling transmission with the transmission wheel 500. Or, the axial length of the magnet engaging with the inner stator on the outer rotor 410 can be greater than the axial length of the inner stator, allowing the transmission wheel 500 to perform magnetic coupling transmission with the aforementioned magnet on the inner periphery of the outer rotor 410. Alternatively, an independent magnetic ring can be provided on the inner periphery of the outer rotor 410 for magnetic coupling transmission with the transmission wheel 500. Or, the outer rotor 410 can have magnetic rings arranged circumferentially on its axial end wall, and the transmission wheel 500 can perform magnetic coupling transmission with the outer rotor 410 in the axial direction. This allows the outer rotor 410 to drive one of the main impeller 200 and the fresh air impeller 310, while the transmission wheel 500 is controlled to rotate via magnetic coupling, thereby driving the other of the two impellers. In this embodiment, the outer rotor 410 controls the rotation of the main impeller 200 through the motor output shaft 420. The outer rotor 410 is also directly magnetically coupled to the transmission wheel 500, which is directly mounted on the shaft of the fresh air impeller 310 to pull the fresh air impeller 310 to rotate. This allows the drive motor 400 to control the synchronous rotation of the main impeller 200 and the fresh air impeller 310 through a smaller transmission structure.

[0046] Please refer to Figures 3 to 5 In one embodiment, the transmission wheel 500 is configured as a magnetic wheel, and the outer rotor 410 is provided with a magnetic ring 411. The transmission wheel 500 is located on the outer periphery of the outer rotor 410 and is radially opposite to the magnetic ring 411 of the outer rotor 410. It is understood that configuring the transmission wheel 500 as a magnetic wheel allows the magnetic forces generated by the transmission wheel 500 and the magnetic ring 411 of the outer rotor 410 to attract and repel each other, achieving magnetic field coupling and completing the transmission of torque and power. Furthermore, in the radial direction between the transmission wheel 500 and the outer rotor 410, the transmission wheel 500 is located on the outer periphery of the magnetic ring 411, eliminating the need for mechanical contact, reducing friction and wear, and minimizing interference with the magnetic field coordination between the outer rotor 410 and the inner stator, thus ensuring the output power of the drive motor 400. Furthermore, the transmission wheel 500 is disposed on the outer periphery of the outer rotor 410, adapting to the positional relationship between the shafts of the fresh air impeller 310 and the main impeller 200. The transmission wheel 500 can directly drive one of the fresh air impeller 310 and the main impeller 200, while the outer rotor 410 can directly drive the other of the main impeller 200 and the fresh air impeller 310. This reduces the complexity of the transmission components for the drive motor 400 to drive the rotation of the main impeller 200 and the fresh air impeller 310, thereby reducing the size of the air conditioner. Of course, in other embodiments, the transmission wheel 500 and the outer rotor 410 can also be magnetically coupled through a method where one is connected to the other or arranged axially.

[0047] Furthermore, in this embodiment, please refer to Figure 3 and Figure 5The outer rotor 410 is also provided with a plastic coating layer 412 extending circumferentially along its outer periphery. The plastic coating layer 412 is distributed along the axial direction of the drive motor 400 at the end of the magnetic ring 411. It can be understood that the plastic coating layer 412 can increase the overall thickness and rigidity of the outer rotor 410. When the magnetic ring 411, the inner rotor, and the transmission wheel 500 are magnetically engaged, the plastic coating layer 412 can optimize the stress distribution on the outer rotor 410, reduce the risk of structural damage due to stress concentration, and help resist external impacts and vibrations, ensuring the stability and reliability of the drive motor 400 during long-term operation. At the same time, the plastic coating layer 412 is usually made of wear-resistant and corrosion-resistant materials, which can resist the erosion of harmful substances such as moisture and dust in the environment, thereby improving the durability and service life of the outer rotor 410. In addition, the plastic coating layer 412 has a certain heat dissipation promoting effect. During the magnetic interaction between the magnetic ring 411, the inner stator, and the transmission wheel 500, it can increase the heat dissipation efficiency of the magnetic ring 411, slow down the temperature rise of the drive motor 400, and help extend the service life of the drive motor 400. Without loss of generality, the plastic coating layer 412 can be a layer covering the axial surface of the magnetic ring 411, or it can be independently set and distributed along the axial direction of the outer rotor 410 at the axial ends of the magnetic ring 411. Of course, in other embodiments, the outer rotor 410 can also be provided with an annular iron core to fix the magnets on the magnetic ring 411 and improve the structural strength of the outer rotor 410.

[0048] Specifically, in this embodiment, please refer to Figure 3 and Figure 5 In the radial direction of the outer rotor 410, the outer periphery of the magnetic ring 411 is either convex to or flush with the outer periphery of the plastic coating layer 412. This means that when the outer periphery of the magnetic ring 411 is convex or flush with the plastic coating layer 412, the plastic coating layer 412 will not convex to the magnetic ring 411 in the radial direction of the outer rotor 410. This prevents interference between the transmission wheel 500 and the plastic coating layer 412 during axial engagement and disengagement, ensuring the smoothness and stability of the axial engagement and disengagement of the control transmission wheel 500. Simultaneously, the plastic coating layer 412 being concave to or flush with the magnetic ring 411 in the radial direction effectively ensures the clearance between the transmission wheel 500 and the outer rotor 410 when controlling the arrangement gap between the transmission wheel 500 and the magnetic ring 411, reducing the possibility of rotational interference of the transmission wheel 500 or interference with the outer rotor 410 during engagement and disengagement. Similarly, the magnetic ring 411 is either raised or flush with the plastic coating layer 412, which minimizes the gap between the magnetic ring 411 and the transmission wheel 500 without interference from the plastic coating layer 412, thus improving the transmission efficiency between the outer rotor 410 and the transmission wheel 500. Of course, in other embodiments, the plastic coating layer 412 may also be raised above the magnetic ring 411 on the outer periphery of the outer rotor 410.

[0049] Regarding the arrangement gap between the transmission wheel 500 and the magnetic ring 411, in one embodiment, please refer to... Figures 3 to 5 The drive wheel 500 and the magnetic ring 411 are arranged radially at intervals along the outer rotor 410, and the resulting arrangement gap L satisfies: 0.1mm≤L≤2mm. It is understandable that configuring the drive wheel 500 as a magnetic wheel allows the magnetic forces generated by the drive wheel 500 and the magnetic ring 411 of the outer rotor 410 to attract and repel each other, achieving magnetic field coupling and completing the transmission of torque and power. Furthermore, the drive wheel 500 and the outer rotor 410 are arranged side-by-side radially, with an arrangement gap between the drive wheel 500 and the magnetic ring 411, i.e., a arrangement gap between their outer surfaces. This avoids interference between the drive wheel 500 and the outer rotor 410 during transmission, preventing unnecessary noise, extending the service life of the drive wheel 500 and the drive motor 400, and ensuring the reliability and stability of the synchronous rotation of the main impeller 200 and the fresh air impeller 310.

[0050] Specifically, when the spacing is less than 0.1mm, the drive wheel 500 and the magnetic ring 411 are too close together, and the magnetic fields generated by the drive wheel 500 and the magnetic ring 411 are prone to mutual interference, which is not conducive to the normal rotation of the outer rotor 410, or may easily lead to magnetic saturation, causing the magnetic field strength to stop increasing and affecting the efficiency of torque transmission, or may easily lead to poor heat dissipation, causing demagnetization of the permanent magnets on the magnetic wheel and the magnetic ring 411, reducing the life of the magnetic wheel and the magnetic ring 411; when the spacing is greater than 2mm, the drive wheel 500 and the magnetic ring 411 are too far apart, and the magnetic fields generated by the drive wheel 500 and the magnetic ring 411 are prone to mutual interference, which is not conducive to the normal rotation of the outer rotor 410, or may easily lead to magnetic saturation, causing the magnetic field strength to stop increasing and affecting the efficiency of torque transmission, or may easily lead to poor heat dissipation, causing demagnetization of the permanent magnets on the magnetic wheel and the magnetic ring 411, reducing the life of the magnetic wheel and the magnetic ring 411. Magnetic fields are not easily coupled, which can easily affect the normal operation and performance of the transmission wheel 500 and the magnetic ring 411, and also increase the space occupied by the transmission wheel 500 and the drive motor 400. Therefore, the arrangement gap between the transmission wheel 500 and the magnetic ring 411 is limited to between 0.1mm and 2mm. By rationally designing the gap between the transmission wheel 500 and the magnetic ring 411, noise during transmission can be reduced, the reliable transmission of torque and power between the transmission wheel 500 and the magnetic ring 411 can be ensured, heat dissipation during transmission can be ensured, the possibility of demagnetization can be reduced, and the service life of the drive motor 400 can be improved. The specific values ​​of the arrangement gap between the transmission wheel 500 and the magnetic ring 411 include, but are not limited to, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, and 2mm. However, in other embodiments, while meeting noise reduction and transmission requirements, the arrangement gap between the transmission wheel 500 and the magnetic ring 411 is greater than 2mm or less than 0.1mm.

[0051] In one embodiment, please refer to Figure 3 and Figure 5 The magnetic ring 411 of the outer rotor 410 and the inner stator are driven by magnetic coupling. It can be understood that for the operation of the drive motor 400, the magnetic ring 411 of the outer rotor 410 and the inner stator exert magnetic force; for the transmission between the outer rotor 410 and the transmission wheel 500, the magnetic ring 411 of the outer rotor 410 and the transmission wheel 500 are driven by magnetic coupling. This means the inner stator and the transmission wheel 500 share a single magnetic ring 411, eliminating the need for separate magnets or magnetic coupling devices, reducing the number of components, simplifying the structure of the outer rotor 410, and thus reducing the size of the drive motor 400. Simultaneously, the magnetic field of the magnetic ring 411 on both the inner and outer radial sides of the outer rotor 410 can be utilized, reducing energy loss during transmission and improving the overall energy efficiency of the drive motor 400. Of course, in other embodiments, the magnetic ring 411 can be set independently, distinct from the magnets that interact magnetically between the outer rotor 410 and the inner stator.

[0052] Furthermore, in one embodiment, please refer to Figure 3 and Figure 5 The magnetic ring 411 includes a ring-shaped mounting portion (not shown) and multiple magnets (not shown). The mounting portion has multiple magnet slots (not shown) distributed circumferentially along the outer rotor 410. Each magnet is fixedly mounted in a magnet slot, and the magnetic poles of the magnets are distributed radially along the outer rotor 410. It can be understood that the magnetic ring 411 has a layer of magnets arranged circumferentially along the outer rotor 410, and the magnetic poles of the magnets are distributed radially along the outer rotor 410. This allows different magnetic poles of the same magnet to act on the inner stator and the drive wheel 500 respectively, increasing the magnetic flux density, enhancing the magnetic coupling effect, and reducing the possibility of mutual interference between the magnetic fields on the inner and outer sides of the magnetic ring 411. Simultaneously, the drive wheel 500 and the inner stator share the same magnets in the same magnetic ring 411, reducing the number of magnets in the magnetic ring 411, simplifying the mechanism of the outer rotor 410, ensuring the reliability and stability of the drive motor 400, and reducing manufacturing costs. The magnetic poles of the magnet are distributed radially along the outer rotor 410, presenting magnetic poles with opposite directions on the radial side of the outer rotor 410. During the rotation of the outer rotor 410, the magnetic poles of the magnet on the outer periphery of the outer rotor 410 are also magnetically coupled to the transmission wheel 500 to ensure the stability of the magnetic coupling transmission between the outer rotor 410 and the transmission wheel 500.

[0053] In another embodiment, multiple magnets may be arranged along the radial direction of the outer rotor 410 on both the inner and outer circumferences of the same magnetic ring 411; or, in yet another embodiment, the magnetic ring 411 is integrally formed by molding or injection molding. For molding, this means integrally forming the magnetic ring 411 using magnetic powder; for injection molding, this means integrally forming the magnetic ring 411 using injection molding. Similarly, the molding method for the magnetic wheel as a single-piece component in the context can also refer to the process of integrally forming the magnetic ring 411.

[0054] Regarding the structure of the transmission wheel 500, in one embodiment, please refer to... Figure 3 and Figure 5 The magnetic wheel includes a support ring (not shown in the figure) and permanent magnets (not shown in the figure), with multiple permanent magnets arranged along the outer circumferential surface of the corresponding support ring. Understandably, multiple permanent magnets are disposed outside the support ring, which enables the magnetic wheel to generate a magnetic field. The connection methods between the permanent magnets and the support ring include, but are not limited to, bonding and embedding, ensuring the integration of the permanent magnets and the support ring and improving the assembly efficiency of the magnetic wheel. The support ring is a non-magnetic ring 411, serving as a carrier for the permanent magnets. This facilitates the transmission connection between the magnetic wheel and the main impeller 200 or the fresh air impeller 310 via the support ring, without affecting the generation of the magnetic field, ensuring the coupling transmission between the transmission wheel 500 and the outer rotor 410. Specifically, when the transmission wheel 500 and the fresh air impeller 310 are connected via the first rotating shaft, the support ring is sleeved on the first rotating shaft. The materials used for the support ring include, but are not limited to, plastic, aluminum alloy, and stainless steel. The magnetic materials of the permanent magnets include, but are not limited to, neodymium iron boron, ferrite, and samarium cobalt. Without loss of generality, permanent magnets with different magnetic poles (N / S poles) are alternately arranged on the outer periphery of the support ring, which helps to achieve effective torque transmission. In another embodiment, the magnetic wheel is configured to be integrally formed from multiple permanent magnets. It is understandable that the magnetic wheel and the outer rotor 410 are driven by magnetic coupling. The magnetic wheel is formed by multiple permanent magnets in one piece, which increases the magnetic field strength of the magnetic wheel and ensures the transmission efficiency of the transmission wheel 500 and the outer rotor 410. At the same time, the one-piece molding of the magnetic wheel has good structural strength and improves the transmission stability between the transmission wheel 500 and the outer rotor 410.

[0055] In one embodiment, please refer to Figure 3 and Figure 5The number of permanent magnets on the magnetic drive wheel 500 is different from the number of magnets on the outer rotor 410. Understandably, by using the difference in the number of permanent magnets on the drive wheel 500 and the magnets on the outer rotor 410, the torque transmission capability and transmission precision between the drive wheel 500 and the outer rotor 410 can be directly and effectively changed. In one embodiment, the number of permanent magnets on the drive wheel 500 is less than the number of magnets on the outer rotor 410. The outer rotor 410 can generate a stronger magnetic field, providing a greater force to the drive wheel 500 when the outer rotor 410 acts as the driving wheel, thus improving the transmission efficiency between the drive wheel 500 and the outer rotor 410. Furthermore, the larger number of magnets on the outer rotor 410 helps improve the magnetic field distribution of the outer rotor 410, increasing the rotational smoothness of the outer rotor 410, and thereby reducing the noise of the drive motor 400 during operation. However, in other embodiments, the number of permanent magnets on the drive wheel 500 and the number of magnets on the outer rotor 410 are set equal.

[0056] In one embodiment, please refer to Figures 3 to 5 The diameter of the drive wheel 500 is different from the outer diameter of the outer rotor 410. Understandably, by utilizing the unequal diameters of the drive wheel 500 and the outer rotor 410, the transmission ratio can be changed to meet the different speed and driving force requirements of the main impeller 200 and the fresh air impeller 310, thereby satisfying different air handling needs; for example... Figure 3 As shown, when the outer rotor 410 acts as the driving wheel in the transmission process, the diameter of the transmission wheel 500 can be smaller than the diameter of the outer rotor 410. In this case, the rotational speed of the fresh air impeller 310 is greater than the rotational speed of the main impeller 200, which can effectively ensure the freshness of the indoor air. Alternatively, the diameter of the transmission wheel 500 can also be larger than the diameter of the outer rotor 410. In this case, the rotational speed of the fresh air impeller 310 is less than the rotational speed of the main impeller 200, which can effectively ensure the rapid adjustment of the indoor air temperature while ensuring air circulation. However, in other embodiments, the transmission wheel 500 and the outer rotor 410 are set to have the same diameter.

[0057] In one embodiment, please refer to Figure 2 and Figure 4The fresh air module 300 is located at the end of the main fan 200. The drive motor 400 is located between the main fan 200 and the fresh air fan 310. The motor output shaft 420 of the drive motor 400 is connected to the outer rotor 410, and the motor output shaft 420 is driven by the main fan 200. The outer rotor 410 drives the main fan 200 to rotate through the motor output shaft 420, and drives the fresh air fan 310 to rotate through the transmission wheel 500. The drive motor 400 is located between the main fan 200 and the fresh air fan 310, which can make better use of the space between the main fan 200 and the fresh air fan 310, avoids the drive motor 400 occupying extra space, and reduces the size of the air conditioner. Meanwhile, the outer rotor 410 directly drives the transmission wheel 500 to rotate. The drive motor 400 is located between the fresh air impeller 310 and the main impeller 200, shortening the transmission path between the transmission wheel 500 and the fresh air impeller 310. Furthermore, the diameter ratio of the outer rotor 410 to the transmission wheel 500 can be adapted to the positions of the shafts of the fresh air impeller 310 and the main impeller 200, allowing the transmission wheel 500 to be directly mounted on the shaft of the fresh air impeller 310. This reduces the structural complexity of the drive motor 400's connection to the fresh air impeller 310 and ensures transmission efficiency. Alternatively, in other embodiments, the drive motor 400 can be located at the end of the main impeller 200 away from the fresh air impeller 310, with the transmission wheel 500, driven directly by the outer rotor 410 via magnetic coupling, connected to the fresh air impeller 310 through a transmission structure.

[0058] In one embodiment, please refer to Figure 1 and Figure 2 In one embodiment, the air conditioner is configured as an indoor unit of a split-type air conditioner, which can be either a wall-mounted or floor-standing unit. In another embodiment, the air conditioner is configured as a modular air conditioner, which can be either a floor-standing or window-type integrated air conditioner. In yet another embodiment, the air conditioner is configured as a split-type air conditioner, comprising two devices: an indoor unit and an outdoor unit.

[0059] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An air conditioner, characterized in that, include: The casing contains the main impeller. A fresh air module is installed on the housing and is located near the end of the main impeller. The fresh air module is equipped with a fresh air impeller. A drive motor, configured as an external rotor motor, the external rotor motor including an external rotor and an inner stator, the external rotor being sleeved on the outer periphery of the inner stator, the drive motor driving one of the main impeller and the fresh air impeller; as well as A drive wheel is connected to the other of the fresh air impeller and the main air impeller, and the drive wheel and the outer rotor are driven by magnetic coupling.

2. The air conditioner as described in claim 1, characterized in that, The drive wheel is configured as a magnetic wheel, the outer rotor is provided with a magnetic ring, and the drive wheel is located on the outer periphery of the outer rotor and is radially opposite to the magnetic ring of the outer rotor.

3. The air conditioner as described in claim 2, characterized in that, The outer rotor is further provided with a plastic coating layer extending circumferentially along the outer circumference, and the plastic coating layer is distributed at the end of the magnetic ring along the axial direction of the drive motor.

4. The air conditioner as described in claim 3, characterized in that, In the radial direction of the outer rotor, the outer periphery of the magnetic ring is either convex to or flush with the outer periphery of the plastic coating layer.

5. The air conditioner as described in claim 2, characterized in that, The transmission wheel and the magnetic ring are arranged at radial intervals along the outer rotor, and the resulting arrangement gap L satisfies: 0.1mm≤L≤2mm.

6. The air conditioner as described in claim 2, characterized in that, The magnetic ring of the outer rotor and the inner stator are driven by magnetic coupling.

7. The air conditioner as described in claim 2, characterized in that, The magnetic ring includes an annular mounting portion and multiple magnets. The mounting portion has multiple magnet slots distributed along the circumference of the outer rotor. One magnet is fixedly mounted in one of the magnet slots. The magnetic poles of the magnets are distributed along the radial direction of the outer rotor. Alternatively, the magnetic ring may be integrally formed by molding or injection molding.

8. The air conditioner as described in claim 2, characterized in that, The magnetic wheel includes a support ring and permanent magnets, and multiple permanent magnets are arranged along the outer peripheral surface of the corresponding support ring. Alternatively, the magnetic wheel may be configured to be integrally formed from multiple permanent magnets.

9. The air conditioner as described in claim 8, characterized in that, The number of permanent magnets on the magnetic wheel is different from the number of magnets on the outer rotor.

10. The air conditioner as claimed in claim 1, characterized in that, The fresh air module is located at the end of the main impeller, the drive motor is located between the main impeller and the fresh air impeller, the motor output shaft of the drive motor is connected to the outer rotor, and the motor output shaft is drivenly connected to the main impeller; And / or, the diameter of the drive wheel is different from the outer diameter of the outer rotor.

11. The air conditioner as claimed in any one of claims 1 to 10, characterized in that, The air conditioner is configured as a modular air conditioner or a split air conditioner, or the air conditioner is configured as the indoor unit of a split air conditioner.

Images