Fan blade dustproof device, fan blade assembly and air conditioner

Abstract

The utility model provides a kind of fan blade dustproof device, fan blade assembly and air conditioner, fan blade dustproof device includes first drive unit, dust cover, side structure, second drive unit, towline and winding shaft;Two side structures are oppositely arranged along the first direction, and the fan blade position is formed between two side structures, and the side structure is provided with around channel, and the towline is arranged in around channel;First drive unit drives winding shaft to rotate, and the first end of dust cover is connected with winding shaft;Second drive unit drives towline to move along around channel, and the second end of dust cover is connected with towline;Dust cover of winding state is wound on winding shaft.Fan blade assembly includes cross-flow fan blade, and air conditioner includes fan blade assembly.The utility model is suitable for wall-mounted machine or cabinet machine, and user is free from manual operation and use experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, specifically to a fan blade dustproof device, a fan blade assembly, and an air conditioner. Background Technology

[0002] A cross-flow fan blade cleaning device is available. It has a cleaning component installed inside the air duct. The cleaning component can come into contact with the cross-flow fan blade. When the cross-flow fan blade rotates, the cleaning component cleans and removes dust from the fan blade.

[0003] Another existing cross-flow fan cleaning device uses multiple small fans inside the cross-flow fan blades to blow away dust on the blades, driven by a motor.

[0004] Both of the aforementioned cross-flow fan cleaning devices require the air conditioner to be turned on. During seasons when the air conditioner is not in use, specifically turning on the unit to clean the dust from the cross-flow fan blades is energy-inefficient and affects user comfort. However, prolonged neglect of cleaning will result in severe dust accumulation.

[0005] A retractable dustproof device for a vertical air conditioner is provided, comprising multiple cover units. Each cover unit is equipped with a corresponding drive unit, cover compartment, and counterweight. The drive unit includes a bidirectional motor and a clamping roller assembly. The cover compartment and drive unit are both located on the top of the vertical air conditioner, and the counterweight is located at the bottom of the cover. The cover unit can be retracted and extended under the drive of the drive unit. The cover unit extends downward and covers one side of the air conditioner. Multiple cover units on the front, back, left, and right sides of the air conditioner are connected by zippers to form a complete dustproof cover.

[0006] The existing dustproof device is installed on the exterior of the floor-standing air conditioner unit, which has poor applicability. For example, it is not suitable for wall-mounted units. Specifically, the air vents of wall-mounted units are on the top surface, which cannot be blocked by the cover unit, and dust can still enter the cross-flow fan blades. Furthermore, the design of this dustproof device is complicated, and after the multiple cover units are extended, a zipper needs to be manually pulled, which is difficult to operate due to the high position of the wall-mounted unit. Utility Model Content

[0007] The primary objective of this invention is to provide a dustproof device for cross-flow fan blades that is well-suited for application and features automatic retraction and extension.

[0008] The second objective of this invention is to provide a fan blade assembly with good applicability and automatic dust cover retraction.

[0009] The third objective of this invention is to provide an air conditioner with an automatically retractable dust cover, thereby improving the user experience.

[0010] The dustproof device for wind turbine blades provided by this utility model includes a first drive unit, a dust cover, side structures, a second drive unit, a traction line, and a winding shaft. The two side structures are arranged opposite each other along a first direction, forming a wind turbine position between the two side structures. At least one side structure is provided with a surrounding channel, which is open towards the other side structure. The traction line is arranged inside the surrounding channel. The first drive unit drives the winding shaft to rotate, and the first end of the dust cover is connected to the winding shaft. Under the drive of the second drive unit and the rigid action of the traction line, the traction line moves along the surrounding channel, and the second end of the dust cover is connected to the traction line. The dust cover can be changed between an open state that blocks the wind turbine blade position and a retracted state that exposes the wind turbine blade position. In the retracted state, the dust cover is wound on the winding shaft.

[0011] As can be seen from the above scheme, the dustproof device for the fan blades is installed inside the air conditioner unit and covers the cross-flow fan blades. When the air conditioner is in operation, the controller sends a command, and the first drive unit starts running upon receiving the command. Driven by the first drive unit, the winding shaft rotates, and the dustproof cover continuously retracts and rotates around the winding shaft until it is completely rolled up onto the winding shaft. At this time, after the air conditioner controller detects the feedback signal that the cross-flow fan blades of the indoor unit are not completely obstructed, the entire unit starts normally. When the air conditioner controller receives a standby or shutdown command, the second drive unit starts running upon receiving the command and drives the traction cable wound on the motor shaft to be released and move along the surrounding channel. The traction cable pulls the dustproof cover around the indoor unit fan blades until the dustproof cover can completely cover the fan blades, isolating the fan blades from prolonged contact with the external environment and preventing dust accumulation on the fan blades. Better yet, by pre-setting the operating parameters of the first and second drive units, they can coordinate with each other during the opening and closing of the dustproof cover. Since the dust cover of this utility model is designed for cross-flow fan blades, it is unaffected by the outer contour and installation method of either wall-mounted or floor-standing air conditioners. The dust cover can be installed inside the wall-mounted or floor-standing air conditioner and placed outside the cross-flow fan blades. The dust cover is automatically opened and closed without manual operation by the user. Therefore, it has good applicability and improves the user experience by eliminating the need for manual operation.

[0012] A further option is to configure at least one side structure as a ring structure with the axis at the position of the fan blade as the center, and the surrounding channel is concentric with the ring structure.

[0013] As can be seen from the above, since the two ends of the cross-flow fan blade need to be supported and connected, this arrangement avoids the side structure from affecting the normal installation and connection of the cross-flow fan blade.

[0014] A further option is that the fan blade dustproof device also includes at least one roller, which is positioned in the surrounding channel to guide the traction line.

[0015] A further approach is to arrange multiple rollers sequentially along the surrounding channel.

[0016] As can be seen from the above, this setup ensures the smooth movement of the traction line within the surrounding channel, thereby ensuring the smooth opening of the dust cover.

[0017] A further proposed solution is to arrange multiple rollers at intervals along the inner and outer sides of the traction line, sequentially positioned along the surrounding channel.

[0018] As can be seen from the above, restricting the traction line from both the inside and outside makes it easier to ensure that the traction line and dust cover move along the arc, further improving the smoothness and accuracy of the movement.

[0019] Another further design is to have an annular groove along its circumference on the roller, with the traction line engaging with the annular groove.

[0020] As can be seen from the above, under this setting, the position of the traction line in the axial direction (axial direction of the cross-flow fan blades) is also restricted, preventing the traction line from detaching from the roller or even from the surrounding channel along the axial direction, and also avoiding the problem of the dust cover moving smoothly due to excessive axial deviation of the traction line.

[0021] Another further option is to connect the winding shaft between the two side structures along the first direction.

[0022] As can be seen from the above, under this setting, both ends of the relatively slender winding shaft are supported axially, and the good stress state extends the service life of the device.

[0023] Another further option is to have a surrounding passage and a traction line installed in both side structures.

[0024] As can be seen from the above, this setting is more conducive to ensuring the consistency of the movement of the left and right sides of the dust cover, which further facilitates the successful opening and closing of the dust cover.

[0025] A further alternative is to have the side edges of the dust cover located within the surrounding passageway.

[0026] As can be seen from the above, this design ensures the sealing and shielding effect of the dustproof device, preventing dust from entering the cross-flow fan blades through the gap between the side structure and the dust cover.

[0027] The second objective of this utility model is to provide a fan blade assembly that includes a cross-flow fan blade and the aforementioned fan blade dustproof device; the cross-flow fan blade is disposed at the fan blade position.

[0028] The third objective of this utility model is to provide an air conditioner that includes the aforementioned fan blade assembly, with a dustproof device for the fan blades disposed within the air conditioner's body. Attached Figure Description

[0029] Figure 1 This is a structural diagram of an embodiment of the dustproof fan blade device of this utility model.

[0030] Figure 2 This is a structural diagram of a first part of an embodiment of the dustproof fan blade device of this utility model.

[0031] Figure 3 This is a structural diagram of a second part of an embodiment of the dustproof fan blade device of this utility model.

[0032] Figure 4 This is a structural diagram of the first state of the wind turbine assembly embodiment of this utility model.

[0033] Figure 5 This is a structural diagram of the second state of the wind turbine assembly embodiment of this utility model.

[0034] Figure 6 This is a cross-sectional view of an embodiment of the air conditioner of this utility model. Detailed Implementation

[0035] See Figures 1 to 3 The dustproof device for the fan blades in this embodiment includes two side structures 1, a first drive unit 21, a second drive unit 22, a winding shaft 3, a dust cover 4, a traction line 5, and two sets of roller groups, each roller group including multiple rollers 6. Both the first drive unit 21 and the second drive unit 22 include a bidirectional rotating motor. The x-axis direction in the figure represents the first direction of this invention, which is also the axial direction of the axis of the cross-flow fan blade and the axis of the axis at fan blade position 400.

[0036] Two side structures 1 are arranged opposite each other along the first direction, forming a fan blade position 400 between the two side structures 1. The fan blade position 400 is the cross-flow fan blade 7 ( Figure 4 (See diagram) Location. Both side structures 1 are set as annular structures with the axis of the fan blade position 400 as the center. The inner circumference of each side structure 1 is formed with an axial through hole 100. The purpose of setting the through hole 100 is to ensure that the two ends of the cross-flow fan blade 7 located in the fan blade position 400 can be installed and connected in the original way.

[0037] Two side structures 1 are provided with surrounding channels 10, which open toward the other side structure 1 and are concentric with the annular side structure 1. Traction lines 5 and roller assemblies are installed within the two side structures 1. (See attached diagram) Figure 1 and Figure 3 One of the traction lines 5 in the side structure 1 is connected to the motor shaft of the second drive unit 22.

[0038] The two side structures 1 also include mounting positions 120 connected to the outside of the annular channel 10, and the first drive unit 21 and the second drive unit 22 are respectively fixed in the two mounting positions 120 of the two side structures 1.

[0039] The slender winding shaft 3 extends along the first direction, with one end coaxially rotatably connected to the motor shaft of the first drive unit 21 of one side structure 1, and the other end rotatably connected to another side structure 1. That is, the winding shaft 3 is connected between the two side structures 1 along the first direction.

[0040] The traction line 5 is made of steel wire or other metal wire with a certain degree of rigidity, and one end of the traction line 5 is connected to the motor shaft of the second drive unit 22. Initially, the traction line 5 is wound around the motor shaft of the second drive unit 22. Under the forward drive of the second drive unit 22 and the rigidity of the traction line 5, the traction line 5 is gradually released from the motor shaft of the second drive unit 22 and moves along the surrounding channel 10. Since the movement of the traction line 5 is restricted within the surrounding channel 10, when the rigid traction line 5 is pushed forward along the surrounding channel 10, the traction line 5 can provide a driving force sufficient to pull the dust cover 4. It is common knowledge in the art that a metal wire confined to a narrow linear space and moving along that line can provide a driving force.

[0041] Furthermore, in this embodiment, multiple rollers 6 of the roller assembly are sequentially arranged along the surrounding channel 10 to guide the traction line 5. Even further, the multiple rollers 6 sequentially arranged along the surrounding channel 10 are spaced apart on the inner and outer sides of the traction line 5. Here, the inner and outer sides of the traction line 5 refer to the inner side closer to the center of the side structure 1 and the outer side further away from the center.

[0042] Furthermore, each roller 6 is provided with an annular groove 60 arranged along its own circumference, and the traction line 5 cooperates with the annular groove 60, that is, the traction line 5 is located in the annular groove 60. With this arrangement, the axial position of the traction line 5 in the cross-flow fan blade 7 is also restricted, preventing the traction line 5 from detaching from the roller 6 or even from the surrounding channel 10 in the axial direction, and also avoiding the problem of the dust cover 4 being affected by excessive axial offset of the traction line 5.

[0043] In the unfolding direction of the dust cover 4, the first end of the dust cover 4 is connected to the winding shaft 3; the left and right sides of the second end of the dust cover 4 are respectively connected to the traction lines 5 of the two side structures 1. Furthermore, the second end of the dust cover 4 may be provided with an axial connecting rod, and the ends of the two traction lines 5 or at suitable positions are provided with hinge members, the two extended ends of which are respectively hinged to the hinge members on the two traction lines 5.

[0044] Combined Figure 4 and Figure 5The wind turbine assembly of this utility model includes a wind turbine dustproof device and a cross-flow wind turbine 7. The cross-flow wind turbine 7 is set at the wind turbine position 400. The two axial ends 71 ​​of the cross-flow wind turbine 7 are exposed at both ends of the wind turbine assembly through the mounting through holes 100 of the two side structures 1, so that the two axial ends 71 ​​of the cross-flow wind turbine 7 can be installed and connected in the original connection method.

[0045] The dust cover 4 can be switched between an open state that covers the fan blades 400 and a retracted state that exposes the fan blades 400. For example... Figure 4 As shown, the dust cover 4 in its wound state is wound onto the winding shaft 3; as Figure 5 The dust cover 4, in its open state, is placed around the outer periphery of the fan blade position 400, at which time the cross-flow fan blade 7 at the fan blade position 400 is blocked from the outer periphery.

[0046] Furthermore, such as Figure 5 As shown, the side edges of the dust cover 4 on the left and right sides (the two axial sides of the cross-flow fan blade 7) are respectively located in the two surrounding channels 10 of the two side structures 1. In this way, the arrangement ensures the sealing and shielding effect of the dustproof device and prevents dust from entering the cross-flow fan blade 7 from the gap between the side structure 1 and the dust cover 4.

[0047] Combined Figure 6 The air conditioner of this utility model includes an indoor unit. In this embodiment, the indoor unit is a wall-mounted unit. The wall-mounted unit includes a cross-flow fan blade 7 and a heat exchanger 8 located inside its own body. It also includes the fan blade dustproof device of this embodiment. That is, the air conditioner includes the fan blade assembly of this utility model. The fan blade dustproof device is disposed inside the air conditioner's body, and the open dust cover 4 is located between the heat exchanger 8 and the cross-flow fan blade 7. The two side structures are fixedly connected to the air conditioner's body.

[0048] The dustproof device for the fan blades is installed inside the air conditioner and covers the cross-flow fan blades 7. When the air conditioner is in operation, the controller issues a command, and the first drive unit 21 starts to run after receiving the command. Under the drive of the first drive unit 21, the winding shaft 3 rotates, and the dustproof cover 4 continuously contracts and rotates around the winding shaft 3 until the dustproof cover 4 is completely rolled up on the winding shaft 3.

[0049] At this point, after the air conditioner controller detects a feedback signal indicating that the indoor unit's cross-flow fan blades 7 are completely unobstructed, the entire unit begins normal operation. When the air conditioner controller receives a standby or shutdown command, the second drive unit 22 starts operating and releases the traction cable 5 wound around the motor shaft, moving it along the surrounding channel 10. The traction cable 5 pulls the dust cover 4 around the indoor unit's fan blades until the dust cover 4 completely covers the fan blades, isolating them from prolonged contact with the external environment and preventing dust accumulation. Even better, by pre-setting the operating parameters of the first drive unit 21 and the second drive unit 22, they can coordinate and cooperate with each other whether the dust cover 4 is open or closed.

[0050] Since the dust cover 4 is designed for the cross-flow fan blade 7 rather than the exterior of the unit, the dust cover is suitable for cylindrical cross-flow fan blades 7 regardless of the outer contour or installation method of the wall-mounted or floor-standing air conditioner. This dust cover can be installed inside the wall-mounted or floor-standing air conditioner and positioned outside the cross-flow fan blade 7. The dust cover 4 is automatically opened and closed, eliminating the need for cumbersome manual operations such as manually tightening zippers as described in the prior art. Therefore, this dust cover is suitable for both wall-mounted and floor-standing air conditioners, improving the user experience by eliminating manual operation.

[0051] In this embodiment, the inner diameter of the mounting through hole 100 is larger than the maximum diameter of the cross-flow fan blade 7. Thus, the cross-flow fan blade 7 can enter and exit the fan blade position 400 through the mounting through hole 100, making the installation or addition of the fan blade dustproof device easier. Of course, in other embodiments, the fan blade dustproof device and the cross-flow fan blade can be pre-assembled as a single unit (i.e., the fan blade assembly of this utility model). When the cross-flow fan blade is installed into the air conditioning unit, the fan blade dustproof device is installed together. Due to the mounting through hole, the installation of the fan blade dustproof device does not affect the connection and installation of the two axial ends of the cross-flow fan blade to the motor shaft or bearing housing and other structures. Furthermore, in this method, the inner diameter of the mounting through hole is not required to be larger than the maximum diameter of the cross-flow fan blade.

[0052] In other embodiments, the surrounding channel is configured to be only slightly wider than the thickness of the traction line, and in this configuration, no roller assembly is provided.

[0053] In other embodiments, a traction line is provided only on one side of the side structure. With this configuration, a sliding track can be provided on the other side of the side structure, and a circular slider structure is provided on the second side of the second end of the dust cover. The slider structure cooperates with the sliding track, so that when the traction line moves the first side of the second end of the dust cover, the second side of the second end of the dust cover moves accordingly.

[0054] In other embodiments, traction lines are provided on both sides of the side structure, and each traction line is driven by a corresponding second drive unit. With this configuration, both sides of the dust cover (the axial sides of the cross-flow fan blades) move actively, making the dust cover's operation smoother.

[0055] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dustproof device for wind turbine blades, comprising a first drive unit and a dust cover; Its features are: It also includes a side structure, a second drive unit, traction lines, and a winding shaft; The two side structures are arranged opposite each other along a first direction, forming a fan blade position between the two side structures. At least one side structure is provided with a surrounding channel, which is open towards the other side structure. The traction line is arranged in the surrounding channel. The first drive unit drives the winding shaft to rotate, and the first end of the dust cover is connected to the winding shaft; Driven by the second drive unit, the traction line moves along the surrounding channel, and the second end of the dust cover is connected to the traction line; The dust cover can be switched between an open state that covers the position of the fan blades and a retracted state that exposes the position of the fan blades, wherein the dust cover in the retracted state is wound on the winding shaft.

2. The dustproof device for wind turbine blades according to claim 1, characterized in that: At least one of the side structures is configured as an annular structure with the axis at the location of the fan blade as the center, and the surrounding channel is concentric with the annular structure.

3. The dustproof device for wind turbine blades according to claim 1, characterized in that: The dustproof device for the fan blades also includes at least one roller disposed in the surrounding channel to guide the traction line.

4. The dustproof device for wind turbine blades according to claim 3, characterized in that: Multiple rollers are arranged sequentially along the surrounding channel to guide the traction line.

5. The dustproof device for wind turbine blades according to claim 4, characterized in that: Multiple rollers are arranged at intervals along the inner and outer sides of the traction line, sequentially arranged along the surrounding channel.

6. The dustproof device for wind turbine blades according to claim 3, characterized in that: The roller has an annular groove arranged along its circumference, and the traction line cooperates with the annular groove.

7. The dustproof device for wind turbine blades according to any one of claims 1 to 6, characterized in that: The winding shaft is connected between the two side structures along the first direction.

8. The dustproof device for wind turbine blades according to any one of claims 1 to 6, characterized in that: Both of the side structures are provided with the surrounding channel and the traction line.

9. The dustproof device for wind turbine blades according to claim 8, characterized in that: The side edges of the dust cover are located within the surrounding channel.

10. Fan blade assembly, including cross-flow fan blades; Its features are, It also includes the dustproof device for wind turbine blades as described in any one of claims 1 to 9; The cross-flow fan blade is located at the fan blade position.

11. An air conditioner, characterized in that, The air conditioner includes the fan blade assembly as described in claim 10, wherein the fan blade dustproof device is disposed within the body of the air conditioner.

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