Cross-flow fan, air conditioner

Abstract

The application relates to the air conditioning technical field and discloses a cross-flow fan, which comprises a rotating shaft and a plurality of fan units, the plurality of fan units are arranged along the length direction of the rotating shaft, and each fan unit can be independently controlled to rotate; wherein the fan unit comprises a driving disc, a first coupling assembly, an air wheel and a second coupling assembly, the driving disc is arranged on the rotating shaft and synchronously rotates with the rotating shaft; the first coupling assembly is arranged on the driving disc; the air wheel is rotatably arranged on the rotating shaft corresponding to the driving disc; the second coupling assembly is arranged on the air wheel; the first coupling assembly and the second coupling assembly can be controlled to switch between a coupling state and a separation state; when the first coupling assembly and the second coupling assembly are coupled, the air wheel rotates with the driving disc; and when the first coupling assembly and the second coupling assembly are separated, the air wheel can rotate relative to the driving disc. The application further discloses an air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, such as a cross-flow fan and an air conditioner. Background Technology

[0002] Air conditioners equipped with cross-flow fans adjust the airflow by changing the fan speed and regulate the airflow direction by rotating the air guide vanes. However, the airflow patterns are relatively limited due to the limited range of motion of the air guide vanes.

[0003] A cross-flow fan assembly is disclosed in related technology, including a connecting rod and multiple cross-flow fans. The multiple cross-flow fans are arranged coaxially along their axial direction and can rotate around their own axis. The connecting rod is coaxially inserted through the multiple cross-flow fans and can translate along its own axis, connecting to one or both of the multiple cross-flow fans simultaneously. The connecting rod can also rotate around its own axis, driving the connected cross-flow fans to rotate synchronously. This cross-flow fan assembly, by setting the connecting rod to connect to one or both of the multiple cross-flow fans, allows the connecting rod to drive the multiple cross-flow fans to rotate individually or simultaneously, enabling the cross-flow fan assembly to output air individually or simultaneously to multiple locations, allowing the air conditioner to achieve different airflow patterns.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] The selection of cross-flow fans needs to be completed by the axial movement of the connecting rod. When there are a large number of cross-flow fans, it is impossible to control the rotation of each cross-flow fan individually by moving the connecting rod, and the air outlet of the cross-flow fan is relatively limited.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a cross-flow fan and an air conditioner to individually control multiple cross-flow fans, thereby increasing the airflow patterns of the cross-flow fan.

[0009] In some embodiments, the cross-flow fan includes a rotating shaft and multiple fan units, which are arranged along the length of the rotating shaft, and each fan unit can be independently controlled to rotate. Each fan unit includes a drive disk, a first coupling component, a fan wheel, and a second coupling component. The drive disk is disposed on the rotating shaft and rotates synchronously with the rotating shaft. The first coupling component is disposed on the drive disk. The fan wheel is rotatably disposed on the rotating shaft corresponding to the drive disk. The second coupling component is disposed on the fan wheel. The first coupling component and the second coupling component can be controlled to switch between a coupling state and a separation state. When the first coupling component is coupled to the second coupling component, the fan wheel rotates with the drive disk. When the first coupling component is separated from the second coupling component, the fan wheel can rotate relative to the drive disk.

[0010] In some embodiments, the drive disk has a pin hole in the radial direction, and the second coupling component has a drive groove; the first coupling component includes a drive pin, which is slidably disposed in the pin hole. When the first coupling component and the second coupling component are coupled, the drive pin extends into the drive groove, and when the first coupling component and the second coupling component are separated, the drive pin retracts from the drive groove.

[0011] In some embodiments, the drive slot has a guide section and a snap-fit ​​section, the guide section having an inclined surface, and the drive pin extending outwards into the snap-fit ​​section under the guidance of the guide section.

[0012] In some embodiments, the drive disk has multiple pin holes along multiple radial lines, the first coupling component includes multiple drive pins, and the multiple drive pins are slidably disposed in the multiple pin holes in a one-to-one correspondence; the second coupling component has multiple drive grooves, and the multiple drive grooves cooperate with the multiple drive pins in a one-to-one correspondence.

[0013] In some embodiments, the drive pin is a magnetic drive pin; the drive disk includes: an electromagnetic ring, a retaining ring, and a connector, wherein the electromagnetic ring is fixed to the rotating shaft, and the electromagnetic ring drives the drive pin to extend or retract by magnetic force; the retaining ring is located on the outer ring of the electromagnetic ring, and the pin hole is opened in the retaining ring; the connector is connected to the electromagnetic ring and the retaining ring, and is used for fixed connection between the electromagnetic ring and the retaining ring.

[0014] In some embodiments, the cross-flow fan further includes a switching device for switching the coupling state and separation state of the first coupling component and the second coupling component; wherein the rotating shaft is a hollow structure; the switching device includes a fixing rod, a wiring harness, and a brush; the fixing rod passes through the rotating shaft, and the rotating shaft has a brush groove corresponding to the electromagnetic ring of the drive disk; the wiring harness is fixed to the fixing rod; one end of the brush is electrically connected to the wiring harness, and the other end extends into the brush groove to electrically connect the wiring harness to the electromagnetic ring.

[0015] In some embodiments, the fixing rod is a hollow structure, and the wire harness passes through the fixing rod.

[0016] In some embodiments, the impeller includes a first end cover, a second end cover, and a plurality of fan blades, wherein the first end cover is integrally formed with the second coupling component, and the drive groove is formed in the inner ring of the first end cover; the second end cover is concentric and coaxial with the first end cover; and the plurality of fan blades are arranged circumferentially along the rotation axis, with each fan blade having its two ends connected to the first end cover and the second end cover, respectively.

[0017] In some embodiments, the cross-flow fan further includes a plurality of baffles disposed on the drive disc, the plurality of baffles being used to keep the plurality of fan units in a preset position along the length of the rotation axis.

[0018] In some embodiments, the air conditioner includes a housing and the aforementioned cross-flow fan, wherein the housing is configured with an accommodating space; and the aforementioned cross-flow fan is disposed in the accommodating space.

[0019] The cross-flow fan air conditioner provided in this embodiment can achieve the following technical effects:

[0020] A cross-flow fan consists of multiple coaxially arranged fan units, each of which can be independently controlled to rotate or stop rotating. The cross-flow fan can select any one or several fan units to rotate, thereby enabling the air conditioner to achieve a variety of different air outlet patterns.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of a cross-flow fan structure provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of a cross-flow fan with a portion of the impeller removed, provided in an embodiment of this disclosure.

[0026] Figure 4 This is a schematic diagram of another cross-flow fan provided in an embodiment of this disclosure;

[0027] Figure 5 yes Figure 4 A cross-sectional view along line AA;

[0028] Figure 6 This is a schematic diagram of the impeller structure of a cross-flow fan provided in an embodiment of this disclosure;

[0029] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0030] Figure 8 This is a schematic diagram of the structure of a switching device for a cross-flow fan provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 100: Rotating shaft; 200: Fan unit; 210: Drive disk; 211: Electromagnetic ring; 212: Retaining ring; 213: Connector; 220: First coupling assembly; 221: Drive pin; 230: Fan wheel; 231: First end cover; 232: Second end cover; 233: Fan blade; 240: Second coupling assembly; 251: Guide section; 252: Snap-fit ​​section; 300: Switching device; 310: Fixing rod; 320: Wiring harness; 330: Brush; 400: Baffle plate; 500: Housing. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0041] Air conditioners equipped with cross-flow fans adjust the airflow by changing the fan speed and adjust the airflow direction by rotating the air guide vane. However, the airflow patterns are limited due to the limited range of motion of the air guide vane. Related technology discloses a cross-flow fan assembly, including a connecting rod and multiple cross-flow fans. The multiple cross-flow fans are arranged coaxially along their axial direction and can rotate around their own axes. The connecting rod is coaxially inserted through the multiple cross-flow fans and can translate along its own axis, connecting to one or both of the fans simultaneously. The connecting rod can also rotate around its own axis, driving the connected fans to rotate synchronously. This cross-flow fan assembly, by connecting to one or both of the fans via the connecting rod, allows the fans to rotate individually or simultaneously, enabling the assembly to output air individually or simultaneously to multiple locations, thus allowing the air conditioner to achieve different airflow patterns. The problem with this technology is that the selection of cross-flow fans needs to be completed by the axial movement of the connecting rod. When there are a large number of cross-flow fans, it is impossible to control the rotation of each cross-flow fan individually by moving the connecting rod, and the air outlet of the cross-flow fan is relatively limited.

[0042] The cross-flow fan and air conditioner provided in this embodiment include a plurality of coaxially arranged fan units 200. Each fan unit 200 can independently switch between coupled and disconnected states with respect to its coupling with the rotating shaft 100. This allows the cross-flow fan to select any one or more fan units 200 to rotate, thereby achieving various different air outlet patterns.

[0043] Combination Figure 2-8 As shown, this embodiment of the present disclosure provides a cross-flow fan, including a rotating shaft 100 and multiple fan units 200. The multiple fan units 200 are arranged along the length direction of the rotating shaft 100, and each fan unit 200 can be independently controlled to rotate. Each fan unit 200 includes a drive disk 210, a first coupling component 220, a fan wheel 230, and a second coupling component 240. The drive disk 210 is disposed on the rotating shaft 100 and rotates synchronously with the rotating shaft 100. The first coupling component 220 is disposed on the drive disk 210. The fan wheel 230 is rotatably disposed on the rotating shaft 100 corresponding to the drive disk 210. The second coupling component 240 is disposed on the fan wheel 230. The first coupling component 220 and the second coupling component 240 can be controlled to switch between a coupling state and a decoupling state. When the first coupling component 220 is coupled with the second coupling component 240, the fan wheel 230 rotates with the drive disk 210. When the first coupling component 220 is decoupling from the second coupling component 240, the fan wheel 230 can rotate relative to the drive disk 210.

[0044] In this embodiment, the cross-flow fan includes a rotating shaft 100 and multiple fan units 200. The rotating shaft 100 is driven and connected to a fan motor, and is rotatably mounted in a preset installation position. The fan units 200 are cylindrical, and their axes are collinear with the axis of the rotating shaft 100. The rotating shaft 100 passes through the multiple fan units 200, serving both to fix the multiple fan units 200 and to provide driving force for the rotation of the fan units 200.

[0045] Multiple fan units 200 are arranged side-by-side, forming a multi-section combination as the fan of a cross-flow fan. Each fan unit 200 can be independently controlled to rotate, meaning each fan unit 200 can be controlled to rotate with or not rotate with the rotation shaft 100. For example, all multiple fan units 200 rotate to achieve a larger air volume output; the fan units 200 with odd-numbered sequences rotate to achieve a smaller air volume output; and the multiple fan units 200 rotate sequentially for a preset time to achieve a sweeping function.

[0046] If a separate output motor and corresponding control module were configured for each fan unit 200, the cost of the cross-flow fan would increase significantly and the structure of the cross-flow fan would become more complex. The cross-flow fan provided in this embodiment includes a drive motor for driving selected fan units 200 or all fan units 200 to rotate.

[0047] A single drive motor driving multiple fan units 200 is implemented based on the following structure. Taking one fan unit 200 as an example, the fan unit 200 includes a drive disk 210 and a fan wheel 230. The drive disk 210 is concentric and coaxial with the rotating shaft 100 and is fixedly connected to the rotating shaft 100. The fan wheel 230 is rotatably disposed on the rotating shaft 100. Here, rotatable means that the fan wheel 230 can rotate relative to the rotating shaft 100. The drive disk 210 is provided with a first coupling component 220, and the fan wheel 230 is provided with a second coupling component 240. When the first coupling component 220 and the second coupling component 240 are in a coupled state, the rotation of the drive disk 210 drives the rotation of the fan wheel 230, that is, the rotating shaft 100 indirectly drives the rotation of the fan wheel 230. When the first coupling component 220 and the second coupling component 240 are in a disengaged state, the fan wheel 230 does not rotate with the drive disk 210, nor with the rotating shaft 100. Due to friction, the rotating shaft 100 still exerts a certain force on the rotation of the impeller 230 when it rotates. At this time, the impeller 230 rotates at a speed much lower than that of the rotating shaft 100, and therefore does not provide actual airflow. Here, "the impeller 230 does not rotate with the rotating shaft 100" means that the speed of the impeller 230 is much lower than that of the rotating shaft 100, or even zero. For multiple fan units 200, one or more selected fan units 200 can be rotated by controlling the coupling state of the first coupling component 220 and the second coupling component 240 of the multiple fan units 200 respectively.

[0048] Using the cross-flow fan provided in this embodiment, the cross-flow fan includes multiple spliced ​​fan units 200. Each fan unit 200 is relatively short, easy to pick up and put down, and not easily deformed during use. Each fan unit 200 can be independently controlled to rotate. The cross-flow fan can achieve a variety of different air outlet functions by selecting one or more of the multiple fan units 200 to rotate. When selecting a fan unit 200, there is no need for a connecting rod that can move axially, so there is no need to reserve space for the connecting rod to move, which is conducive to the miniaturization of the cross-flow fan.

[0049] Optionally, the first coupling component 220 includes a first magnetic component, and the second coupling component 240 includes a second magnetic component. When the first magnetic component is energized, it generates a magnetic attraction force with the second magnetic component.

[0050] The first magnetic component is an electromagnet, and the second magnetic component is a permanent magnet. When the first magnetic component is energized, a magnetic attraction is generated between it and the second magnetic component, achieving magnetic coupling through this attraction. In one implementation, the rotating shaft 100 is electrically connected to a fixed power module via brushes 330. The rotating shaft 100 is equipped with electrode contacts through which the first magnetic component receives power input and control. When the first coupling component 220 rotates, the first magnetic component is energized, and the electromagnetic force pulls the second magnetic component to gradually rotate synchronously with the first coupling component 220. The coupling process is smooth and gentle, without mechanical friction. This configuration facilitates switching between the coupling and decoupling states of the first coupling component 220 and the second coupling component 240.

[0051] Optionally, the drive disk 210 has a pin hole in the radial direction, and the second coupling component 240 has a drive groove; the first coupling component 220 includes a drive pin 221, which is slidably disposed in the pin hole. When the first coupling component 220 and the second coupling component 240 are coupled, the drive pin 221 extends into the drive groove, and when the first coupling component 220 and the second coupling component 240 are separated, the drive pin 221 retracts from the drive groove.

[0052] In this configuration, the first coupling component 220 and the second coupling component 240 are in a plug-in fit. Specifically, the first coupling component 220 includes a retractable drive pin 221, and the second coupling component 240 is configured with a drive groove that mates with the drive pin 221. The drive pin 221 extends along a radial line of the drive disk 210, and the second coupling component 240 is located on the outer ring of the drive disk 210. The drive disk 210 has a pin hole along its radial direction, which is used to fix the drive pin 221 and provide a sliding track for the extension and retraction of the drive pin 221. The dimensions of the drive groove are adapted to the dimensions of the drive pin 221. When the drive pin 221 extends, it is inserted into the drive groove of the second coupling component 240. At this time, the first coupling component 220 and the second coupling component 240 are in a coupled state. The drive disk 210 rotates, and a force perpendicular to the direction of the drive pin 221 is applied to the second coupling component 240 through the drive pin 221. As the second coupling component 240 rotates, the rotating fan unit 200 rotates together with the drive disk 210. With this configuration, the connection structure is relatively strong when the first coupling component 220 and the second coupling component 240 are coupled, which is beneficial for the drive disk 210 to drive the fan unit 200 to rotate.

[0053] Optionally, the drive slot has a guide section 251 and a snap-fit ​​section 252. The guide section 251 has an inclined surface, and when the drive pin 221 extends out, it extends into the snap-fit ​​section 252 under the guidance of the guide section 251.

[0054] When the drive disk 210 stops rotating, the drive disk 210 and the fan unit 200 cannot always stop at the same relative position, so the drive pin 221 may not be able to extend into the drive slot. To ensure that the drive pin 221 can accurately enter the drive slot after extending, the drive slot is divided into two sections from the outside to the inside along the radial line of the second coupling assembly 240: a guide section 251 and a snap-fit ​​section 252. The guide section 251 has a large opening and a sloping surface. The drive pin 221 can slide along the sloping surface to the snap-fit ​​section 252 of the drive slot once it enters the larger opening of the guide section 251. The opening size of the snap-fit ​​section 252 is adapted to the size of the drive pin 221, and the drive pin 221 snaps into the snap-fit ​​section 252, driving the fan unit 200 to rotate. In one embodiment, the guide section 251 is trumpet-shaped, with the larger end facing outwards and the smaller end facing the entrance of the snap-fit ​​section 252. This configuration facilitates easier engagement between the drive pin 221 and the drive slot. As the fan unit 200 rotates with the shaft 100, the drive pin 221 retracts, disconnecting the direct drive connection between the fan unit 200 and the drive disk 210. When the fan unit 200 stops while the shaft 100 rotates, the drive pin 221 extends and, guided by the guide section 251 of the drive slot, inserts into the engagement section 252 of the drive slot, thereby driving the fan unit 200 to rotate. This configuration also facilitates easier engagement between the drive pin 221 and the drive slot, allowing for smoother switching between coupling and decoupling states between the first coupling component 220 and the second coupling component.

[0055] Optionally, the drive disk 210 has multiple pin holes along multiple radial lines, the first coupling component 220 includes multiple drive pins 221, and the multiple drive pins 221 are slidably disposed in the multiple pin holes in a one-to-one correspondence; the second coupling component 240 has multiple drive grooves, and the multiple drive grooves cooperate with the multiple drive pins 221 in a one-to-one correspondence.

[0056] The multiple pin holes are distributed circumferentially along the drive disk 210, preferably evenly, to ensure more balanced rotation of the drive disk 210. Each pin hole is oriented radially along the drive disk 210. The first coupling component 220 includes multiple drive pins 221, each corresponding to one of the pin holes. The second coupling component 240 has multiple drive slots, each corresponding to one of the drive pins 221. This arrangement improves the stability and reliability of the coupling between the first and second coupling components 220 by allowing the drive pins 221 to engage with the drive slots. Furthermore, the drive disk 210 only needs to rotate a small distance to insert the drive pins 221 into the drive slots.

[0057] Optionally, the drive pin 221 is a magnetic drive pin 221; the drive disk 210 includes: an electromagnetic ring 211, a retaining ring 212, and a connector 213, wherein the electromagnetic ring 211 is fixed to the rotating shaft 100, and the electromagnetic ring 211 drives the drive pin 221 to extend or retract by magnetic force; the retaining ring 212 is located on the outer ring of the electromagnetic ring 211, and a pin hole is opened in the retaining ring 212; the connector 213 is connected to the electromagnetic ring 211 and the retaining ring 212, and is used to fix the electromagnetic ring 211 and the retaining ring 212 together.

[0058] The drive disk 210 includes an inner electromagnetic ring 211 and an outer retaining ring 212, with the electromagnetic ring 211 and retaining ring 212 being concentric and coaxial. The drive disk 210 also includes a connector 213 for connecting the electromagnetic ring 211 and the retaining ring 212. Exemplarily, the connector 213 includes multiple radial ribs, each rib having its two ends connected to the electromagnetic ring 211 and the retaining ring 212 respectively. The drive pin 221 is a permanent magnet, and the electromagnetic ring 211 is an electromagnet, used to generate magnetic attraction to extend or retract the drive pin 221. The retaining ring 212 has the aforementioned multiple pin holes to mount multiple drive pins 221 and provide sliding tracks for the drive pins 221. The electromagnetic ring 211 serves both to extend and retract the drive pins 221 and as a structural component of the drive disk 210, resulting in a stable and lightweight structure. The drive structure is simple and reliable, as the electromagnetic ring 211 drives the magnetic drive pins 221 to extend and retract.

[0059] Optionally, the cross-flow fan also includes a switching device 300, which is used to switch the coupling state and the separation state of the first coupling component 220 and the second coupling component 240; wherein, the rotating shaft 100 is a hollow structure; the switching device 300 includes a fixing rod 310, a wiring harness 320 and a brush 330, the fixing rod 310 passes into the rotating shaft 100, and the rotating shaft 100 has a brush groove corresponding to the electromagnetic ring 211 of the drive disk 210; the wiring harness 320 is fixed to the fixing rod 310; one end of the brush 330 is electrically connected to the wiring harness 320, and the other end extends into the brush groove so that the wiring harness 320 is electrically connected to the electromagnetic ring 211.

[0060] The switching device 300 is used to switch the coupling and decoupling states of the first coupling component 220 and the second coupling component 240 of the fan unit 200, thereby controlling the rotation of the fan unit 200. The rotation of the fan unit 200 includes rotating with the rotating shaft 100 and not rotating with the rotating shaft 100. Preferably, the switching device 300 corresponds to all fan units 200, which makes it easier for the cross-flow fan to control the fan units 200. The cross-flow fan controls each fan unit 200 individually through the switching device 300 to achieve different air outlet functions.

[0061] Specifically, the switching device 300 includes a fixed rod 310, a wiring harness 320, and a brush 330. The rotating shaft 100 is a hollow rod, and the fixed rod 310, wiring harness 320, and brush 330 are all located within the rotating shaft 100. The rotating shaft 100 is a moving part, and the fixed rod 310 is a fixed part; the fixed rod 310 remains stationary when the rotating shaft 100 rotates. The fixed rod 310 provides mounting positions for the wiring harness 320 and brush 330. One end of the wiring harness 320 is electrically connected to a power supply device such as a junction box, and the other end is connected to the brush 330. The rotating shaft 100 has brush grooves corresponding to the brush 330, and the brush 330 passes through these brush grooves and is electrically connected to the electromagnetic ring 211.

[0062] With this configuration, the electromagnetic ring 211 can maintain good electrical connection even when the rotating shaft 100 is rotating. The rotation of a single fan unit 200 can be controlled by controlling the on / off state and current direction of the electromagnetic ring 211.

[0063] Optionally, the fixing rod 310 is a hollow structure, and the wire harness 320 passes through the fixing rod 310.

[0064] Each of the multiple fan units 200 requires a corresponding telephone line and connecting cable. When there are a large number of fan units 200, threading the wiring harness 320 into the fixing rod 310 can simplify the overall structure of the switching device 300, making it easier to install and maintain.

[0065] Optionally, the impeller 230 includes a first end cover 231, a second end cover 232, and a plurality of fan blades 233. The first end cover 231 is integrally formed with the second coupling component 240, and a drive groove is formed in the inner ring of the first end cover 231. The second end cover 232 is concentric and coaxial with the first end cover 231. The plurality of fan blades 233 are arranged circumferentially along the rotation shaft 100, and the two ends of each fan blade 233 are respectively connected to the first end cover 231 and the second end cover 232.

[0066] Both end caps of the impeller 230 are annular. The inner ring of the first end cap 231 is rotatably connected to the drive disk 210, and the inner ring of the second end cap 232 is rotatably connected to the rotating shaft 100. The first end cap 231 and the second coupling assembly 240 are integrated, meaning the first end cap 231 serves as both a structural component of the impeller 230 and the second coupling assembly 240. The inner ring of the first end cap 231 has the aforementioned drive groove. The second end cap 232 is concentric and coaxial with the first end cap 231, jointly fixing multiple fan blades 233. When the impeller 230 rotates, the multiple fan blades 233 drive air movement. This configuration simplifies the structure of the cross-flow fan.

[0067] Optionally, the cross-flow fan also includes multiple baffles 400 disposed on the drive disc 210, which are used to keep multiple fan units 200 in a preset position along the length of the rotation shaft 100.

[0068] The impeller 230 can rotate relative to the rotating shaft 100, which also means that the impeller 230 may move axially along the rotating shaft 100. If the position of the impeller 230 deviates along the length of the rotating shaft 100, the drive pin 221 will not be able to engage with the drive groove. Therefore, a baffle 400 is provided on the end face of the impeller 230, which restricts the movement of the impeller 230 along the length of the rotating shaft 100, thereby keeping the impeller 230 in a preset position. There are multiple impellers 230, and at least two baffles 400, respectively provided at both ends of the rotating shaft. As a preferred embodiment, a baffle 400 is provided between every two adjacent impellers 230. This can better limit the position of the impeller 230.

[0069] Optionally, a flat bearing is provided between the baffle 400 and the impeller 230.

[0070] When the impeller 230 does not rotate with the rotating shaft 100, the installation of a flat bearing can reduce the friction between the impeller 230 and the baffle 400, thereby making the cross-flow fan's control over the rotation of the fan unit 200 clearer.

[0071] Combination Figure 1 As shown, this embodiment of the present disclosure provides an air conditioner, including a housing 500 and the aforementioned cross-flow fan, wherein the housing 500 is configured with an accommodating space; the aforementioned cross-flow fan is disposed in the accommodating space.

[0072] The air conditioner includes a housing 500, which has an accommodating space and an air inlet and an air outlet communicating with the accommodating space. A cross-flow fan is installed in the accommodating space, driving air to flow from the air inlet to the air outlet. The cross-flow fan has multiple fan units 200, each of which can be independently controlled to rotate. Using the air conditioner provided in this embodiment, the air conditioner can achieve various different air outlet modes by individually controlling multiple fan units 200, thus facilitating user operation.

[0073] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A cross-flow fan, characterized in that, include: The rotating shaft is a hollow rod. Multiple fan units are arranged along the length of the rotation axis, and each fan unit can be independently controlled to rotate. The fan unit includes: A drive disk is disposed on the rotating shaft and rotates synchronously with the rotating shaft. The drive disk has a pin hole in the radial direction. The drive disk includes an electromagnetic ring, which is fixed to the rotating shaft. The electromagnetic ring drives the drive pin to extend or retract through magnetic force. The rotating shaft has a brush groove corresponding to the electromagnetic ring of the drive disk. A first coupling component is disposed on the drive disk. The first coupling component includes a drive pin, which is slidably disposed in the pin hole. The drive pin is a magnetic drive pin. The wind turbine is rotatably mounted on the rotating shaft corresponding to the drive disc; A second coupling component is disposed on the wind turbine. The second coupling component has a drive slot. The first coupling component and the second coupling component can be controlled to switch between a coupling state and a separation state. When the first coupling component is coupled with the second coupling component, the wind turbine rotates with the drive disk. When the first coupling component is separated from the second coupling component, the wind turbine can rotate relative to the drive disk. A switching device is used to switch the coupling state and the decoupling state of the first coupling component and the second coupling component; when the first coupling component and the second coupling component are in the coupled state, the driving pin extends into the driving groove; when the first coupling component and the second coupling component are decoupling, the driving pin retracts from the driving groove; the switching device includes: The wire harness is inserted into the rotating shaft; The brush has one end electrically connected to the wire harness and the other end extending into the brush slot to electrically connect the wire harness to the electromagnetic ring.

2. The cross-flow fan according to claim 1, characterized in that, The drive groove has a guide section and a snap-fit ​​section. The guide section has an inclined surface, and when the drive pin extends out, it extends into the snap-fit ​​section under the guidance of the guide section.

3. The cross-flow fan according to claim 1, characterized in that, The drive disk has multiple pin holes along multiple radial lines, and the first coupling component includes multiple drive pins, which are slidably disposed in the multiple pin holes in a one-to-one correspondence. The second coupling component has a plurality of drive slots, and the plurality of drive slots are matched with the plurality of drive pins in a one-to-one correspondence.

4. The cross-flow fan according to claim 1, characterized in that, The drive disk also includes: A retaining ring is located on the outer ring of the electromagnetic ring, and the pin hole is formed in the retaining ring; A connector, connecting the electromagnetic ring and the retaining ring, is used to fix the electromagnetic ring and the retaining ring together.

5. The cross-flow fan according to claim 4, characterized in that, Also includes: The switching device includes: A fixing rod is inserted into the rotating shaft, and the wire harness is fixed to the fixing rod.

6. The cross-flow fan according to claim 5, characterized in that, The fixing rod is a hollow structure, and the wire harness passes through the fixing rod.

7. The cross-flow fan according to any one of claims 1 to 6, characterized in that, The wind turbine includes: The first end cap is integrally formed with the second coupling component, and the drive groove is formed in the inner ring of the first end cap; The second end cap is concentric and coaxial with the first end cap. Multiple fan blades are arranged circumferentially along the rotation axis, and the two ends of each fan blade are respectively connected to the first end cover and the second end cover.

8. The cross-flow fan according to any one of claims 1 to 6, characterized in that, Also includes: Multiple baffles are disposed on the drive disk, and the multiple baffles are used to keep the multiple fan units in a preset position in the length direction of the rotation shaft.

9. An air conditioner, characterized in that, include: The shell is constructed to have accommodating space; and, The cross-flow fan according to any one of claims 1 to 8 is disposed in the accommodating space.

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