Cross-flow fan and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a cross-flow fan and an air conditioner, and aims to solve the problem that the cross-flow fan of the air conditioner in the prior art cannot meet various air outlet quantity requirements. In order to achieve the purpose, the cross-flow fan comprises a plurality of fan blades, a plurality of first sliding grooves are formed in the first end cover, the fan blades are movably connected with the first sliding grooves, and the first sliding grooves are not perpendicular to the diameter of the first end cover; and the driving assembly is arranged to be capable of driving the fan blades to move along the first sliding grooves. The fan blades are driven by the driving assembly to move along the first sliding groove, so that the effective fanning diameter and / or the fan blade angle of the cross-flow fan are / is changed, the air volume can be adjusted, when the rotating speed of the cross-flow fan is not changed, the air volume can be adjusted, energy consumption is reduced, and when the rotating speed of the cross-flow fan is changed, the air volume can be adjusted. The adjustable amount of the air volume can be increased, the air volume adjusting efficiency is improved, and therefore the requirement for various air outlet volumes is met.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly provides a cross-flow fan and an air conditioner. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, air conditioners have become one of the indispensable electrical appliances in people's daily lives. The air conditioner can blow cold air or hot air through a cross-flow fan to adjust the ambient temperature, making the ambient temperature where people are located more comfortable.

[0003] When quickly adjusting the indoor temperature or the air supply distance of the air conditioner, it is necessary to adjust the air volume of the air conditioner. In the prior art, the air volume of the air conditioner is adjusted by adjusting the rotation speed of the cross-flow fan, but there is a problem that various air volume requirements cannot be met.

[0004] Correspondingly, there is a need for a new cross-flow fan and an air conditioner in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem that the cross-flow fan of the air conditioner in the prior art cannot meet various air volume requirements.

[0006] In a first aspect, the utility model provides a cross-flow fan, which includes: a plurality of fan blades; a first end cover, on which a plurality of first chutes are provided, and the fan blades are movably connected to the first chutes, and the first chutes are not perpendicular to the diameter of the first end cover; a driving assembly, which is arranged to drive the fan blades to move along the first chutes.

[0007] In the case of adopting the above technical solution, since the first chutes are not perpendicular to the diameter of the first end cover, the driving assembly drives the fan blades to move along the first chutes, so the position of the fan blades in the radial direction of the first end cover will change accordingly, and the angle of the fan blades will also be the same as the angle of the first chutes, making the effective fan diameter and / or the angle of the fan blades of the cross-flow fan change, thereby realizing the adjustment of the air volume. When the rotation speed of the cross-flow fan remains unchanged, the adjustment of the air volume can also be realized, reducing the energy consumption. When the rotation speed of the cross-flow fan changes, the adjustable range of the air volume can be increased, and the efficiency of the air volume adjustment can be improved, thereby meeting various air volume requirements.

[0008] In the specific embodiment of the above cross-flow fan, the driving assembly includes a turntable and a connecting member, the turntable can rotate coaxially relative to the first end cover, and the connecting member is respectively rotatably connected to the turntable and the first end of the fan blade.

[0009] In the case of adopting the above technical solution, the rotation of the turntable drives the movement of the connecting member, and the connecting member drives the movement of the first end of the fan blade, thereby driving the fan blade to move along the first chute.

[0010] In the specific embodiment of the cross-flow fan described above, the first chute is not parallel to the diameter of the first end cover, and the plurality of first chutes are arranged centrosymmetrically along the rotation axis center of the first end cover.

[0011] In the case of adopting the above technical solution, since the first chute is neither perpendicular nor parallel to the diameter of the first end cover, when the fan blade moves along the first chute, it can not only change the radial position of the fan blade on the first end cover, but also change the inclination angle of the fan blade, meeting various air volume requirements.

[0012] In the specific embodiment of the cross-flow fan described above, a plurality of hinge shafts arranged circumferentially are provided on the turntable; the connecting member includes a first connecting rod, a second connecting rod and a third connecting rod. The first end of the first connecting rod is hinged to the hinge shaft, the second end of the first connecting rod is hinged to the first end of the second connecting rod, the second end of the second connecting rod is hinged to the first end of the fan blade, the first end of the third connecting rod is fixedly connected to the second end of the first connecting rod, and the second end of the third connecting rod is hinged to the middle of the second connecting rod of the adjacent connecting member.

[0013] In the case of adopting the above technical solution, through the arrangement of the first connecting rod, the second connecting rod and the third connecting rod, the rotation of the turntable drives the first end of the fan blade to move along the first chute, and it can not only drive the first end of the fan blade to approach the center of the first end cover, but also drive the first end of the fan blade to move away from the center of gravity of the first end cover. At the same time, the fan blade can stop at any position on the first chute, realizing precise adjustment of the position of the fan blade and improving the adjustment effect.

[0014] In the specific embodiment of the cross-flow fan described above, the driving assembly further includes a first driving device and a transmission gear. The first driving device is connected to the first end cover and is used to drive the transmission gear to rotate. A first set of teeth is provided on the turntable, and a second set of teeth is provided on the transmission gear. The first set of teeth and the second set of teeth are meshed and transmitted.

[0015] In the case of adopting the above technical solution, the accuracy of adjusting the position of the fan blade is improved through gear meshing transmission.

[0016] In the specific embodiment of the cross-flow fan described above, the turntable is of an annular structure. The first set of teeth is provided on the inner ring of the turntable, the second set of teeth is provided on the outer ring of the transmission gear, and the transmission gear and the turntable are eccentrically arranged.

[0017] In the case of adopting the above technical solution, through the meshing transmission of the internal and external teeth, the transmission gear is eccentrically arranged within the inner circle of the turntable, reducing the occupied space, optimizing the layout, and lowering the cost.

[0018] In the specific embodiment of the cross-flow fan described above, the first driving device is a stepping motor.

[0019] In the case of adopting the above technical solution, by adjusting the number of steps of the stepping motor, the position of the fan blade is adjusted, further improving the accuracy of the control of the fan blade position.

[0020] In the specific embodiment of the cross-flow fan described above, an arc-shaped chute is provided on the turntable, a sliding buckle is provided on the first end cover, and the sliding buckle is movably connected to the arc-shaped chute.

[0021] In the case of adopting the above technical solution, through the movable connection between the sliding buckle and the arc-shaped chute, the coaxial rotation of the turntable relative to the first end cover is realized, and a limit is provided for the turntable.

[0022] In the specific embodiment of the cross-flow fan described above, the cross-flow fan further includes a second end cover, a plurality of second chutes are provided on the second end cover, the second chutes are arranged in one-to-one correspondence with the first chutes, the first end of the fan blade is movably connected to the first chute, and the second end of the fan blade is movably connected to the second chute.

[0023] In the case of adopting the above technical solution, the two end covers are respectively connected to the two ends of the fan blade, so that the two ends of the fan blade can stably slide in the two chutes respectively.

[0024] In the second aspect, the present invention further provides an air conditioner, and the air conditioner includes the cross-flow fan.

[0025] Compared with the prior art, the beneficial effects of the cross-flow fan provided by the present invention are as follows: Since the first chute is not perpendicular to the diameter of the first end cover, by driving the fan blade to move along the first chute through the driving assembly, the position of the fan blade in the radial direction of the first end cover will change accordingly, and the angle of the fan blade will also be consistent with the angle of the first chute, so that the effective fan diameter and / or the angle of the fan blade of the cross-flow fan change, thereby realizing the adjustment of the air volume. When the rotational speed of the cross-flow fan remains unchanged, the adjustment of the air volume can also be realized, reducing the energy consumption. When the rotational speed of the cross-flow fan changes, the adjustable amount of the air volume can be increased, and the efficiency of the air volume adjustment is improved, thereby meeting various air volume requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings, in which:

[0027] Figure 1It is a schematic diagram of the overall structure of the cross-flow fan of the present utility model;

[0028] Figure 2 It is a schematic diagram of the structure of the drive assembly of the present utility model.

[0029] Reference numerals:

[0030] 1 - Fan blade, 2 - First end cover, 3 - Second end cover, 4 - Drive assembly, 5 - Second drive device, 21 - First chute, 22 - Slide buckle, 31 - Second chute, 41 - Turntable, 42 - Connecting piece, 411 - Hinge shaft, 412 - Arc chute, 421 - First connecting rod, 422 - Second connecting rod, 423 - Third connecting rod. Specific embodiments

[0031] The following describes some embodiments of the present utility model with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not used to limit the protection scope of the present utility model. Those skilled in the art can adjust it as needed to adapt to specific application scenarios.

[0032] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present utility model. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In addition, it should also be noted that in the description of the present utility model, the ordinal numbers "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In addition, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] Based on the problem pointed out in the background technology that the cross-flow fan of the air conditioner in the prior art cannot meet various air volume requirements, the invention aims to drive the fan blades to move along the first slide groove through a driving component, and the radial position of the fan blades in the first end cover will change accordingly, and the angle of the fan blades will also be consistent with the angle of the first slide groove, so that the effective fan diameter and / or the blade angle of the cross-flow fan will change, thereby realizing the adjustment of the air volume. When the speed of the cross-flow fan remains unchanged, the air volume can also be adjusted, thereby reducing energy consumption. When the speed of the cross-flow fan changes, the adjustable amount of the air volume can be increased, and the efficiency of the air volume adjustment is improved, thereby meeting various air volume requirements.

[0035] The air conditioner of the utility model comprises a cross-flow fan which is arranged on an inner unit of the air conditioner and is used for evenly diffusing cold air or hot air into an indoor space to provide a comfortable environment.

[0036] See first Figure 1 , Figure 1 The overall structure of the cross-flow fan of the utility model is shown. Figure 1 As shown, the cross-flow fan includes a plurality of blades 1, a first end cover 2, a second end cover 3, and a drive assembly 4. The first end cover 2 is provided with a plurality of first slide grooves 21, and the first end of the blade 1 is movably connected to the first slide groove 21, and the first slide groove 21 is not perpendicular to the diameter of the first end cover 2; the second end cover 3 is provided with a plurality of second slide grooves 31, and the second slide grooves 31 are arranged one-to-one with the first slide grooves 21, and the second end of the blade 1 is movably connected to the second slide groove 31; the drive assembly 4 is configured to be able to drive the blade 1 to move along the first slide groove 21. Since the first slide groove 21 is not perpendicular to the diameter of the first end cover 2, the fan blade 1 is driven to move along the first slide groove 21 through the driving component 4, and the radial position of the fan blade 1 in the first end cover 2 will change accordingly, and the angle of the fan blade 1 will also be consistent with the angle of the first slide groove 21, so that the effective fan diameter and / or the angle of the fan blade 1 of the cross-flow fan changes, thereby realizing the adjustment of the air volume. When the speed of the cross-flow fan remains unchanged, the air volume can also be adjusted, thereby reducing energy consumption. When the speed of the cross-flow fan changes, the adjustable amount of the air volume can be increased, and the efficiency of the air volume adjustment is improved, thereby meeting various air volume requirements.

[0037] Possibly, the cross-flow fan further includes a second drive device 5, which may be an electric motor or a pneumatic motor, etc. The second drive device 5 may be transmission-connected to the first end cover 2 or the second end cover 3, as long as it can drive the first end cover 2, the second end cover 3 and the blades 1 to rotate. It should be noted that the first end cover 2 and the second end cover 3 may be interconnected through the blades 1, and other connection structures such as connecting rods may be provided between the first end cover 2 and the second end cover 3, as long as it can ensure that the first end cover 2, the second end cover 3 and the blades 1 can rotate together under the driving action of the second drive device 5.

[0038] Those skilled in the art can understand that, although it is described above in combination with Figure 1 that the first end of the fan blade 1 is movably connected to the first sliding groove 21, and the second end of the fan blade 1 is movably connected to the second sliding groove 31, this is not restrictive. The fan blade 1 can also be arranged such that its middle part is movably connected to the first sliding groove 21, as long as the fan blade 1 can move along the first sliding groove 21.

[0039] Then refer to Figure 1 and Figure 2 , Figure 2 which shows the structure of the driving assembly of the present utility model. As Figure 1 and Figure 2As shown in the figure, the driving assembly 4 includes a turntable 41, a connecting member 42, a transmission gear, and a first driving device. The turntable 41 is of an annular structure. The inner ring of the turntable 41 is provided with first teeth. The turntable 41 is provided with a plurality of hinge shafts 411 arranged circumferentially; the connecting member 42 includes a first connecting rod 421, a second connecting rod 422, and a third connecting rod 423. The first end of the first connecting rod 421 is hinged to the hinge shaft 411. The second end of the first connecting rod 421 is hinged to the first end of the second connecting rod 422. The second end of the second connecting rod 422 is hinged to the first end of the fan blade 1. The first end of the third connecting rod 423 is fixedly connected to the second end of the first connecting rod 421. The second end of the third connecting rod 423 is hinged to the middle of the second connecting rod 422 of the adjacent connecting member 42; the outer ring of the transmission gear is provided with second teeth. The transmission gear is arranged inside the inner ring of the turntable 41 and is eccentrically arranged with respect to the turntable 41. The first teeth and the second teeth are engaged for transmission; the first driving device is connected to the first end cover 2 and is used to drive the transmission gear to rotate. The first driving device can be a stepping motor, or other motors, or a pneumatic motor, etc.; the driving assembly 4 and the fan blade 1 are arranged at both axial ends of the first end cover 2. The first end of the fan blade 1 passes through the first sliding groove 21 and is hinged to the second end of the second connecting rod 422. By driving the transmission gear to rotate through the first driving device, the transmission gear and the turntable 41 are engaged for transmission to drive the turntable 41 to rotate. Furthermore, the first end of the connecting rod is driven to move to drive the first end of the fan blade 1 to move, improving the accuracy of the position adjustment of the fan blade 1. The settings of the first connecting rod 421, the second connecting rod 422, and the third connecting rod 423 realize that the rotation of the turntable 41 drives the first end of the fan blade 1 to move along the first sliding groove 21, and can not only drive the first end of the fan blade 1 to approach the center of the first end cover 2, but also drive the first end of the fan blade 1 to move away from the center of gravity of the first end cover 2. At the same time, the fan blade 1 can stop at any position on the first sliding groove 21, realizing the precise adjustment of the position of the fan blade 1 and improving the adjustment effect. Further, an arc-shaped sliding groove 412 is provided on the turntable 41, and a sliding buckle 22 is provided on the first end cover 2. The sliding buckle 22 is movably connected to the arc-shaped sliding groove 412; through the movable connection between the sliding buckle 22 and the arc-shaped sliding groove 412, the coaxial rotation of the turntable 41 relative to the first end cover 2 is realized, and a limit is provided for the turntable 41. It should be noted that the number of arc-shaped sliding grooves 412 can be one or more. The sliding buckle 22 and the arc-shaped sliding groove 412 are arranged in one-to-one correspondence. When the number of arc-shaped sliding grooves 412 is multiple, the multiple arc-shaped sliding grooves 412 are evenly arranged along the circumference of the turntable 41.

[0040] Optionally, the first sliding groove 21 is not parallel to the diameter of the first end cap 2, and the plurality of first sliding grooves 21 are arranged centrosymmetrically along the rotation axis center of the first end cap 2; since the first sliding groove 21 is neither perpendicular to the diameter of the first end cap 2 nor parallel to the diameter of the first end cap 2, when the fan blade 1 moves along the first sliding groove 21, it can not only change the radial position of the fan blade 1 on the first end cap 2, but also change the inclination angle of the fan blade 1, meeting various air volume requirements. In addition, the first sliding groove 21 can also be arranged parallel to the diameter of the first end cap 2 to keep the angle of the fan blade 1 fixed when adjusting the radial position of the fan blade 1 on the first end cap 2. It should be noted that the first sliding groove 21 can be set as a straight groove, an arc groove, a broken line groove or other shapes, as long as the fan blade 1 can change the radial position of the fan blade 1 on the first end cap 2 when moving along the first sliding groove 21. The above adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention, and those skilled in the art can make adjustments according to needs.

[0041] Those skilled in the art can understand that although it is described above that the transmission gear is arranged inside the inner circle of the turntable 41, this is not restrictive. The transmission gear can also be arranged outside the turntable 41. Correspondingly, the first set of teeth is arranged on the outer circle of the turntable 41, and the second set of teeth is arranged on the outer circle of the transmission gear. Those skilled in the art can make adjustments according to needs.

[0042] It should be noted that the above embodiments are only used to illustrate the principle of the present invention and are not intended to limit the protection scope of the present invention. Without deviating from the principle of the present invention, those skilled in the art can adjust the above embodiments so that the present invention can be applied to more specific application scenarios.

[0043] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without deviating from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A cross-flow fan, characterized in that, the cross-flow fan includes: a plurality of fan blades; a first end cover, on which a plurality of first sliding grooves are provided, the fan blades are movably connected to the first sliding grooves, and the first sliding grooves are not perpendicular to the diameter of the first end cover; a driving assembly, which is arranged to drive the fan blades to move along the first sliding grooves.

2. The cross-flow fan according to claim 1, characterized in that, the driving assembly includes a turntable and a connecting member, the turntable can rotate coaxially relative to the first end cover, and the connecting member is respectively rotatably connected to the turntable and the first end of the fan blade.

3. The cross-flow fan according to claim 1, characterized in that, the first sliding grooves are not parallel to the diameter of the first end cover, and the plurality of first sliding grooves are arranged symmetrically about the rotation axis center of the first end cover.

4. The cross-flow fan according to claim 2, characterized in that, a plurality of hinge shafts arranged circumferentially are provided on the turntable; the connecting member includes a first connecting rod, a second connecting rod and a third connecting rod. The first end of the first connecting rod is hinged to the hinge shaft, the second end of the first connecting rod is hinged to the first end of the second connecting rod, the second end of the second connecting rod is hinged to the first end of the fan blade, the first end of the third connecting rod is fixedly connected to the second end of the first connecting rod, and the second end of the third connecting rod is hinged to the middle of the second connecting rod of the adjacent connecting member.

5. The cross-flow fan according to claim 2, characterized in that, the driving assembly further includes a first driving device and a transmission gear. The first driving device is connected to the first end cover and is used to drive the transmission gear to rotate. A first set of teeth is provided on the turntable, and a second set of teeth is provided on the transmission gear. The first set of teeth and the second set of teeth are engaged for transmission.

6. The cross-flow fan according to claim 5, characterized in that, the turntable is of an annular structure, the first set of teeth is provided on the inner ring of the turntable, the second set of teeth is provided on the outer ring of the transmission gear, and the transmission gear and the turntable are eccentrically arranged.

7. The cross-flow fan according to claim 5, characterized in that, the first driving device is a stepping motor.

8. The cross-flow fan according to claim 2, characterized in that, an arc-shaped sliding groove is provided on the turntable, and a sliding buckle is provided on the first end cover. The sliding buckle is movably connected to the arc-shaped sliding groove.

9. The cross-flow fan according to claim 1, characterized in that, the cross-flow fan further includes a second end cover, on which a plurality of second sliding grooves are provided. The second sliding grooves are arranged in one-to-one correspondence with the first sliding grooves. The first end of the fan blade is movably connected to the first sliding groove, and the second end of the fan blade is movably connected to the second sliding groove.

10. An air conditioner, characterized in that, The air conditioner includes the cross-flow fan according to any one of claims 1 to 9.

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