Cross-flow fan, air conditioner indoor unit, air conditioner and control method thereof

Abstract

The application provides a cross-flow fan blade, an air conditioner indoor unit, an air conditioner and a control method thereof, comprising a fixed part, a blade and a force applying part; the blade comprises a rotating end and a swinging end; the rotating end is rotationally connected with the fixed part; the rotating end can freely rotate on the fixed part; the force applying part can apply force to the swinging end of the blade to fix the blade on the fixed part. The cross-flow fan blade, the air conditioner indoor unit, the air conditioner and the control method thereof can solve the problem that the blade of the cross-flow fan blade hinders air inlet.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly relates to a cross-flow fan blade, an air conditioner indoor unit, an air conditioner and a control method thereof. BACKGROUND

[0002] At present, the air inlet of an up-down air outlet air conditioner needs to outlet air in the reverse mode, and the up-down air inlet air duct is designed as a similar structure, and the cross-flow fan blades are the same.

[0003] However, this structure causes the air volume on the air inlet side to be further reduced when flowing through the plurality of blades with different angles, and finally the air volume passing through the heat exchanger is small, resulting in poor temperature regulation effect.

[0004] Therefore, how to provide a cross-flow fan blade, an air conditioner indoor unit, an air conditioner and a control method thereof capable of solving the problem of the cross-flow fan blade blades hindering air inlet becomes a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the technical problem to be solved by the application is to provide a cross-flow fan blade, an air conditioner indoor unit, an air conditioner and a control method thereof capable of solving the problem of the cross-flow fan blade blades hindering air inlet.

[0006] In order to solve the above problems, the application provides a cross-flow fan blade, comprising:

[0007] a fixed part;

[0008] a blade; the blade comprises a rotating end and a swinging end; the rotating end is rotationally connected with the fixed part; the rotating end can freely rotate on the fixed part;

[0009] and a force applying part; the force applying part can apply force to the swinging end of the blade to fix the blade on the fixed part.

[0010] Preferably, the force applying part is a magnetic module; the magnetic module comprises a first magnetic part and a second magnetic part; the first magnetic part is arranged on the fixed part; the second magnetic part is arranged on the swinging end of the blade; the first magnetic part and the second magnetic part have an attractive force therebetween.

[0011] Preferably, the fixed part is an annular fixed disc; the rotating end of the blade is located on the inner circumferential side of the swinging end; and / or, the first magnetic part is arranged on the outer circumferential side of the annular fixed disc; and / or, the number of the blades is multiple; and / or, the swinging end of each blade is provided with the second magnetic part; the first magnetic part and the second magnetic part are arranged one-to-one.

[0012] Preferably, the first magnetic part is an electromagnet; and / or, the second magnetic part is an iron sheet.

[0013] According to still another aspect of the present application, there is provided an air conditioner indoor unit, comprising a cross-flow fan blade, the cross-flow fan blade being the above-mentioned cross-flow fan blade.

[0014] Preferably, the air conditioner indoor unit further comprises a housing; the housing has a first air outlet; the cross-flow fan blade comprises a first cross-flow fan blade; the first cross-flow fan blade corresponds to the position of the first air outlet;

[0015] And / or, the housing has a second air outlet; the cross-flow fan blade comprises a second cross-flow fan blade; the second cross-flow fan blade corresponds to the position of the second air outlet.

[0016] Preferably, the first air outlet is arranged upward or downward; and / or, the second air outlet is arranged upward or downward.

[0017] According to still another aspect of the present application, there is provided an air conditioner, comprising an air conditioner indoor unit, the air conditioner indoor unit being the above-mentioned air conditioner indoor unit.

[0018] According to still another aspect of the present application, there is provided an air conditioner control method as mentioned above, comprising the following steps:

[0019] Detecting the air inlet information and / or the air outlet information of the air conditioner;

[0020] Controlling the force applying condition of the force applying part of the cross-flow fan blade according to the air inlet information and / or the air outlet information of the air conditioner.

[0021] Preferably, the step of controlling the force applying part according to the air inlet information and / or the air outlet information of the air conditioner comprises the following steps:

[0022] When the first air outlet is an air outlet, controlling the force applying part of the first cross-flow fan blade to apply force to fix the blade of the first cross-flow fan blade on the fixing part of the first cross-flow fan blade;

[0023] And / or, when the first air outlet is an air inlet, controlling the force applying part of the first cross-flow fan blade to stop applying force to make the blade of the first cross-flow fan blade freely rotate on the fixing part of the first cross-flow fan blade;

[0024] And / or, when the second air outlet is an air outlet, controlling the force applying part of the second cross-flow fan blade to apply force to fix the blade of the second cross-flow fan blade on the fixing part of the second cross-flow fan blade;

[0025] And / or, when the second air outlet is an air inlet, controlling the force applying part of the second cross-flow fan blade to stop applying force to make the blade of the second cross-flow fan blade freely rotate on the fixing part of the second cross-flow fan blade.

[0026] Preferably, the step of controlling the force applying part of the first cross-flow fan blade to apply force to fix the blade of the first cross-flow fan blade on the fixing part of the first cross-flow fan blade further comprises:

[0027] Detecting the rotating speed of the first cross-flow fan blade;

[0028] controlling the force exerted by the force exerting part of the first cross-flow fan blade according to the rotation speed of the first cross-flow fan blade;

[0029] and / or,

[0030] controlling the force exerted by the force exerting part of the second cross-flow fan blade to fix the blade of the second cross-flow fan blade on the fixing part of the second cross-flow fan blade further comprises:

[0031] detecting the rotation speed of the second cross-flow fan blade;

[0032] controlling the force exerted by the force exerting part of the second cross-flow fan blade according to the rotation speed of the second cross-flow fan blade.

[0033] The cross-flow fan blade, the air conditioner indoor unit and the air conditioner and the control method thereof provided by the application have the following advantages: the rotating end can rotate freely on the fixing part; the force exerting part can exert force on the swing end of the blade to fix the blade on the fixing part; when the air inlet of the upper air outlet or the lower air outlet is blocked, the force exerting part does not exert force on the swing end of the blade, so that the blade can rotate freely on the fixing part, and the blade reaches an optimal angle under the action of the wind and the gravity, thereby effectively solving the problem that the blade of the cross-flow fan blade blocks the air inlet. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 is a structural schematic diagram of the cross-flow fan blade of an embodiment of the application;

[0035] Figure 2 FIG. 2 is a structural schematic diagram of the air conditioner indoor unit of an embodiment of the application;

[0036] Figure 3 FIG. 3 is a structural schematic diagram of the cross-flow fan blade of an embodiment of the application.

[0037] The reference signs are as follows:

[0038] 1, fixing part; 2, blade; 21, rotating shaft; 3, force exerting part; 31, first magnetic part; 32, second magnetic part; 4, shell; 41, first air outlet; 411, first cross-flow fan blade; 42, second air outlet; 421, second cross-flow fan blade; 5, motor; 6, electric appliance box; 7, wire. DETAILED DESCRIPTION

[0039] For reference, Figures 1-2As shown, according to the embodiments of the present application, a cross-flow fan blade includes a fixed part 1, a blade 2 and a force applying part 3; the blade 2 includes a rotating end and a swinging end; the rotating end is rotatably connected with the fixed part 1; the rotating end can freely rotate on the fixed part 1; the force applying part 3 can apply force to the swinging end of the blade 2 to fix the blade 2 on the fixed part 1; the rotating end can freely rotate on the fixed part 1; the force applying part 3 can apply force to the swinging end of the blade 2 to fix the blade 2 on the fixed part 1; when the upper air inlet or the lower air inlet is in air, the force applying part 3 does not apply force to the swinging end of the blade 2, so that the blade 2 freely rotates on the fixed part 1, and the blade 2 reaches a best angle under the action of wind and gravity, which can effectively solve the problem of the blade 2 of the cross-flow fan blade blocking air inlet; the air flow on the air inlet side flows more smoothly, avoiding being further consumed by the cross-flow fan blade, and improving the air inlet amount. The fixed part 1 is provided with a shaft hole; a rotating shaft 21 is arranged in the shaft hole, and the rotating end of the blade 2 is arranged on the rotating shaft 21, and the blade 2 can rotate 360° around the rotating shaft 21. Alternatively, the rotating end of the blade 2 is cylindrical and rotates around the shaft hole, and the swinging end is a wing-shaped sharp corner. When the cross-flow fan blade is installed at the air outlet, the force applying part 3 applies force to the swinging end, so that the blade 2 is fixed on the fixed part 1; when the cross-flow fan blade is installed at the air inlet, the force applying part 3 does not apply force, so that the blade 2 swings to the most smooth position with the wind on the air inlet side, avoiding the air flow through the cross-flow fan blade being collided by the blade 2 at different angles to cause wind amount attenuation, and ensuring the air inlet amount.

[0040] The present application also discloses some embodiments, the force applying part 3 is a magnetic module; the magnetic module includes a first magnetic part 31 and a second magnetic part 32; the first magnetic part 31 is arranged on the fixed part 1; the second magnetic part 32 is arranged on the swinging end of the blade 2; the first magnetic part 31 and the second magnetic part 32 have an attractive force.

[0041] The present application also discloses some embodiments, the fixed part 1 is an annular fixed disc; the rotating end of the blade 2 is located on the inner circumferential side of the swinging end; the present application also discloses some embodiments, the first magnetic part 31 is arranged on the outer circumferential side of the annular fixed disc; and / or, the number of blades 2 is arranged as multiple; and / or, the swinging end of each blade 2 is provided with a second magnetic part 32; the first magnetic part 31 and the second magnetic part 32 are one-to-one correspondingly arranged.

[0042] The second magnetic part 32 is arranged on the outer circumferential side of the annular fixed disc; the blade 2 is arranged as multiple, and the blade 2 is arranged around the circumference of the annular fixed disc; that is, the first magnetic part 31 is arranged as multiple, and the number of the second magnetic part 32 is arranged as multiple, and the multiple second magnetic parts 32 are arranged around the outer circumferential side of the annular fixed disc.

[0043] The application further discloses some embodiments, wherein the first magnetic member 31 is an electromagnet; the application further discloses some embodiments, wherein the second magnetic member 32 is an iron sheet; whether the electromagnet has magnetic force can be controlled by controlling the power-on or power-off of the electromagnet; when the electromagnet is powered on, the electromagnet has magnetism, can attract the iron sheet, and is in contact with the iron sheet, thereby fixing the swing end of the blade 2 and making the blade 2 fixed on the fixed part 1; when the electromagnet is powered off, the electromagnet has no magnetism, has no attraction between the electromagnet and the iron sheet, and the swing end is not forced, and the blade 2 is freely rotated around the rotating shaft 21. The electromagnet is fixed on the outer periphery of the annular fixing disc through buckling, the leading-out wire of the electromagnet coil of each electromagnet extends to the outer periphery side of the annular fixing disc, converges into a wire 7, and gradually extends into a preset electric box 6 on the side of the DC motor 5, the on-off and the electric quantity of the electromagnet coil are controlled through the mainboard, and the corresponding relationship with the rotating speed of the air outlet side DC motor 5 is determined according to the blade parameter, the torque of the motor 5 and the like. The swing end of the blade 2 can be connected with the iron sheet by pasting, for example, by 502 adhesive.

[0044] The annular fixing disc can be an end cover, the cross-flow fan blade 2 is matched with the two side end covers through the shaft hole, the rotating end of the blade 2 can rotate 360° around the rotating shaft 21, the arrangement density of the blade 2 can ensure that the blades 2 do not interfere with each other when rotating at a full angle, and the swing end of the blade 2 is provided with an iron sheet. A circle of the outer periphery of the end cover is arranged with an electromagnet at a position corresponding to the blade 2, the on-off of the electromagnet is controlled, the blade 2 is fixed or released, and the purpose of controlling the swing angle of the blade 2 is achieved.

[0045] According to the embodiment of the application, an air conditioner indoor unit is provided, comprising a cross-flow fan blade.

[0046] The application further discloses some embodiments, wherein the air conditioner indoor unit further comprises a shell 4; the shell 4 has a first air outlet 41; the cross-flow fan blade comprises a first cross-flow fan blade 411; the first cross-flow fan blade 411 corresponds to the position of the first air outlet 41.

[0047] The application further discloses some embodiments, wherein the shell 4 has a second air outlet 42; the cross-flow fan blade comprises a second cross-flow fan blade 421; the second cross-flow fan blade 421 corresponds to the position of the second air outlet 42.

[0048] The application also discloses some embodiments in which the first air outlet 41 is upward or downward; the application also discloses some embodiments in which the second air outlet 42 is upward or downward. Then the air conditioner is an up-down air outlet structure; the air conditioner can take in air through the upper air outlet and take out air through the lower air outlet; or take in air through the lower air outlet and take out air through the upper air outlet. Through the cross-flow fan blade which can be dynamically adjusted according to the application, when the air inlet and outlet are switched, the angle of the cross-flow fan blade 2 on the air inlet and outlet side is dynamically adjusted, so that the air flow on the air inlet side flows more smoothly, avoids being further consumed by the cross-flow fan blade, and improves the air inlet amount. The problem that the cross-flow fan blades on both sides of the up-down air outlet air conditioner cannot simultaneously meet the functional requirements of the air inlet and outlet sides can be solved.

[0049] According to the embodiment of the application, an air conditioner is provided, comprising an air conditioner indoor unit, which is the air conditioner indoor unit described above.

[0050] According to the embodiment of the application, an air conditioner control method as described above is provided, comprising the following steps:

[0051] Detecting air inlet information and / or air outlet information of the air conditioner;

[0052] Controlling the force applying condition of the force applying part 3 of the cross-flow fan blade according to the air inlet information and / or air outlet information of the air conditioner.

[0053] The application also discloses some embodiments in which controlling the force applying part 3 according to the air inlet information and / or air outlet information of the air conditioner comprises the following steps:

[0054] When the first air outlet 41 is an air outlet, controlling the force applying part 3 of the first cross-flow fan blade 411 to apply force to fix the blade 2 of the first cross-flow fan blade 411 on the fixing part 1 of the first cross-flow fan blade 411;

[0055] The application also discloses some embodiments in which when the first air outlet 41 is an air inlet, controlling the force applying part 3 of the first cross-flow fan blade 411 to stop applying force, so that the blade 2 of the first cross-flow fan blade 411 is freely rotated on the fixing part 1 of the first cross-flow fan blade 411;

[0056] The application also discloses some embodiments in which when the second air outlet 42 is an air outlet, controlling the force applying part 3 of the second cross-flow fan blade 421 to apply force to fix the blade 2 of the second cross-flow fan blade 421 on the fixing part 1 of the second cross-flow fan blade 421;

[0057] The application also discloses some embodiments in which when the second air outlet 42 is an air inlet, controlling the force applying part 3 of the second cross-flow fan blade 421 to stop applying force, so that the blade 2 of the second cross-flow fan blade 421 is freely rotated on the fixing part 1 of the second cross-flow fan blade 421.

[0058] Regardless of whether the first air inlet 41 is an air inlet or the second air inlet 42 is an air inlet, the electromagnet of the cross-flow fan blade at the air inlet is powered off, the swing end of the blade 2 loses the magnetic attraction, the blade 2 droops along the direction of gravity, and when the machine is started, the cross-flow fan blade at the air outlet is driven to rotate by the direct current motor 5, the air inlet is sucked into the air inlet channel, and the air inlet is blown to the cross-flow fan blade 2 at the air inlet along the air duct direction. The blade 2 keeps a certain most smooth position angle under the action of gravity and wind thrust, and reaches a balance state. The blade 2 at the air inlet can swing along the air supply direction to reach the most smooth position, avoid air inlet attenuation, and maximize the air inlet. The state of the blade 2 of the cross-flow fan blade can be switched, and the blade 2 at the air outlet is adjusted to the optimal angle of air supply.

[0059] When the speed of the direct current motor 5 at the air outlet changes, the air inlet changes, the wind thrust received by the blade 2 of the cross-flow fan blade at the air inlet changes, the most smooth position angle changes, and a balance state is reached again. The most smooth position can be dynamically adjusted according to the actual air inlet, so that the swing angle of the blade 2 in all balance states is the angle at which the air inlet attenuation is minimized at this moment, that is, the blade 2 is automatically adjusted to the most smooth angle, high efficiency, and good reliability.

[0060] It can be ensured that the air inlet does not attenuate due to the large angle difference between the blade 2 of the cross-flow fan blade and the air inlet angle, and that the blade 2 does not block the air inlet to cause the air inlet to attenuate. At the same time, it can be ensured that the blade 2 at the air outlet cannot be fixed at the end cover due to the adjustable blade 2, causing poor air outlet. The same structure can switch between the two forms, which is convenient, fast and high in reliability. The bottleneck problem of large air inlet attenuation is solved.

[0061] Regardless of whether the first air inlet 41 and the second air inlet 42 are air outlets, the electromagnet of the cross-flow fan blade corresponding to the air outlet is powered on to make it have magnetism, the swing end of the blade 2 is attracted, and is respectively rotated to the corresponding electromagnet and is firmly attracted. When the machine is started, the cross-flow fan blade at the air outlet is driven by the direct current motor 5 at the air outlet, the angle of the blade 2 thereon meets the cooperation requirement with the normal air duct, and the air can be normally supplied.

[0062] The application also discloses some embodiments, the force exerted by the force exerting part 3 of the first cross-flow fan blade 411 is controlled to fix the blade 2 of the first cross-flow fan blade 411 on the fixing part 1 of the first cross-flow fan blade 411.

[0063] The speed of the first cross-flow fan blade 411 is detected.

[0064] The size of the force exerted by the force exerting part 3 of the first cross-flow fan blade 411 is controlled according to the speed of the first cross-flow fan blade 411.

[0065] The application also discloses some embodiments,

[0066] The force exerted by the force exerting part 3 of the second cross-flow fan blade 421 is controlled to fix the blade 2 of the second cross-flow fan blade 421 on the fixing part 1 of the second cross-flow fan blade 421.

[0067] detecting the rotation speed of the second cross-flow fan blade 421;

[0068] controlling the force exerted by the force exerting portion 3 of the second cross-flow fan blade 421 according to the rotation speed of the second cross-flow fan blade 421.

[0069] When the rotation speed of the motor 5 driving the cross-flow fan blade at the air outlet changes, the centrifugal force of the fan blade corresponding to the cross-flow fan blade at the air outlet changes. At this time, the current passing through the electromagnet is adjusted to adjust the magnetic attraction force of the oscillating end of the blade 2, which is adjusted according to the rotation speed of the motor 5, so as to ensure that the blade 2 is firmly attracted to the outer ring of the annular fixed disc. It can be ensured that the blade 2 is reliably assembled under different rotation speeds, and the problem of reliable assembly of the blade 2 during high-speed operation of the cross-flow fan blade is solved.

[0070] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0071] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, which should be regarded as the protection scope of the present application.

Claims

1. A cross-flow impeller, characterized by, The cross-flow fan blade comprises: a fixed part (1), a blade (2) and a force applying part (3); the blade (2) comprises a rotating end and a swinging end; the rotating end is rotationally connected with the fixed part (1); the force applying part (3) can apply force to the swinging end of the blade (2) to fix the blade (2) on the fixed part (1); when the force applying part (3) does not apply force to the swinging end of the blade (2), the rotating end can freely rotate on the fixed part (1); the force applying part (3) is a magnetic module; the magnetic module comprises a first magnetic member (31) and a second magnetic member (32); the first magnetic member (31) is arranged on the fixed part (1); the second magnetic member (32) is arranged on the swinging end of the blade (2); the first magnetic member (31) and the second magnetic member (32) have an attractive force therebetween; the first magnetic member (31) is an electromagnet.

2. The through-flow impeller as claimed in claim 1, characterized in that the fixed part (1) is an annular fixed disc; the rotating end of the blade (2) is located on the inner circumferential side of the swinging end; the first magnetic member (31) is arranged on the outer circumferential side of the annular fixed disc; the number of the blades (2) is multiple; the swinging end of each blade (2) is provided with the second magnetic member (32); the first magnetic member (31) and the second magnetic member (32) are arranged one by one.

3. The through-flow impeller as claimed in claim 1, wherein the second magnetic member (32) is an iron sheet.

4. An air conditioner indoor unit comprising a cross-flow fan, characterized by, The cross-flow fan blade is the cross-flow fan blade according to any one of claims 1-3.

5. The air conditioning indoor unit as claimed in claim 4, wherein The air conditioner indoor unit further comprises a shell (4); the shell (4) has a first air outlet (41); the cross-flow fan blade comprises a first cross-flow fan blade (411); the first cross-flow fan blade (411) corresponds to the position of the first air outlet (41); and / or, the shell (4) has a second air outlet (42); the cross-flow fan blade comprises a second cross-flow fan blade (421); the second cross-flow fan blade (421) corresponds to the position of the second air outlet (42). 6.The indoor unit of the air conditioner according to claim 5, characterized by The first air outlet (41) is arranged upward or downward; and / or, the second air outlet (42) is arranged upward or downward.

7. An air conditioner comprising an air conditioner indoor unit, characterized by comprising: The air conditioner indoor unit is the air conditioner indoor unit according to any one of claims 5-6.

8. A control method for an air conditioner as set forth in claim 7, characterized by, The method comprises the following steps: detecting the air inlet information and / or the air outlet information of the air conditioner; controlling the force applying condition of the force applying part (3) of the cross-flow fan blade according to the air inlet information and / or the air outlet information of the air conditioner; the step of controlling the force applying part (3) according to the air inlet information and / or the air outlet information of the air conditioner comprises the following steps: when the first air outlet (41) is an air outlet, controlling the force applying part (3) of the first cross-flow fan blade (411) to apply force to fix the blade (2) of the first cross-flow fan blade (411) on the fixed part (1) of the first cross-flow fan blade (411); and / or, when the first air outlet (41) is an air inlet, controlling the force applying part (3) of the first cross-flow fan blade (411) to stop applying force to make the blade (2) of the first cross-flow fan blade (411) freely rotate on the fixed part (1) of the first cross-flow fan blade (411). And / or, when the second air port (42) is an air outlet, the force applying part (3) of the second cross-flow fan blade (421) is controlled to apply force to fix the blade (2) of the second cross-flow fan blade (421) on the fixing part (1) of the second cross-flow fan blade (421); And / or, when the second air port (42) is an air inlet, the force applying part (3) of the second cross-flow fan blade (421) is controlled to stop applying force, so that the blade (2) of the second cross-flow fan blade (421) is free to rotate on the fixing part (1) of the second cross-flow fan blade (421).

9. The air conditioner control method as set forth in claim 8, characterized by, The control of the force applying part (3) of the first cross-flow fan blade (411) to apply force to fix the blade (2) of the first cross-flow fan blade (411) on the fixing part (1) of the first cross-flow fan blade (411) further comprises: detecting the rotating speed of the first cross-flow fan blade (411); controlling the size of the force applied by the force applying part (3) of the first cross-flow fan blade (411) according to the rotating speed of the first cross-flow fan blade (411); And / or, The control of the force applying part (3) of the second cross-flow fan blade (421) to apply force to fix the blade (2) of the second cross-flow fan blade (421) on the fixing part (1) of the second cross-flow fan blade (421) further comprises: detecting the rotating speed of the second cross-flow fan blade (421); controlling the size of the force applied by the force applying part (3) of the second cross-flow fan blade (421) according to the rotating speed of the second cross-flow fan blade (421).

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