Cross-flow fan

Abstract

The utility model discloses a cross-flow fan which comprises a blade sliding rail, an inner sliding rail, an outer sliding rail, blades and a sliding block, and the blade sliding rail is arranged on an air conditioner base in a rotating mode. The inner sliding rail is fixedly arranged on the air conditioner base; the outer sliding rail is arranged on the air conditioner base in a sliding mode in the axial direction. One ends of the blades are slidably arranged on the blade sliding rails, the other ends of the blades are fixedly connected with the sliding blocks, the sliding blocks are slidably arranged between the inner sliding rails and the outer sliding rails, and the sliding blocks can slide along the guide slopes of the inner sliding rails under the pushing action of the outer sliding rails; the blades are slidably connected to the blade sliding rails in the radial direction of the blade sliding rails, spiral springs are arranged between the blades and the sliding blocks, and the blade sliding rails are connected with a fan motor. According to the cross-flow fan, by adjusting the diameter of the fan, the requirement for adjusting the large air volume of the cross-flow fan is met, the air volume requirement of an air conditioner under different operation working conditions can be met, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning equipment, in particular to a cross-flow fan. Background Art

[0002] As people's living standards improve, air conditioners have become an indispensable appliance in their daily lives, driven by the pursuit of a comfortable indoor temperature. Air conditioners use cross-flow fans to blow out cool or hot air to adjust the ambient temperature, keeping people comfortable.

[0003] In existing technology, the air output of an air conditioner is adjusted by changing the speed of the cross-flow fan. The diameter of the cross-flow fan in the indoor unit of the air conditioner is fixed, and the air output adjustment method is single. However, the fan diameter has a significant impact on the air volume and comfort of the air conditioner.

[0004] In summary, how to provide a fan with adjustable diameter to meet the air volume requirements of the air conditioner under different operating conditions has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a cross-flow fan, which meets the large air volume adjustment requirements of the cross-flow fan by adjusting the diameter of the fan, can meet the air volume requirements of the air conditioner under different operating conditions, and has a wider range of applications.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A cross-flow fan, comprising:

[0008] The blade slide rail is rotatably arranged on the air conditioner base;

[0009] An inner slide rail, fixedly arranged on the air conditioner base;

[0010] An outer slide rail is axially slidably arranged on the air conditioner base;

[0011] A blade, one end of which is slidably arranged on the blade slide rail, and the other end is fixedly connected to the slider, the slider is slidably arranged between the inner slide rail and the outer slide rail, and the slider can slide along the guide inclined surface of the inner slide rail under the pushing action of the outer slide rail;

[0012] The blade is connected to the blade slide rail in a radially sliding manner along the blade slide rail. A coil spring is provided between the blade and the slider. The blade slide rail is connected to the fan motor.

[0013] Optionally, the outer slide rail includes a first slide rail body, a first hole groove is provided at one end of the first slide rail body close to the blade, and a second hole groove is provided at the other end, the aperture of the first hole groove is larger than the aperture of the second hole groove, the first hole groove and the second hole groove are connected by a tapered hole, and the hole side of the tapered hole is in sliding contact with the first inclined surface of the slider.

[0014] Optionally, the first hole slot, the tapered hole and the second hole slot are coaxially arranged;

[0015] The first hole groove and the second hole groove are both cylindrical holes, and the tapered hole is a tapered hole.

[0016] Optionally, a first rolling body is provided on the first inclined surface, and a top surface of the first rolling body is higher than a surface of the first inclined surface.

[0017] Optionally, the inner slide rail includes a second slide rail body, and an end of the second slide rail body close to the blade is provided with a supporting inclined surface, and the supporting inclined surface is in sliding contact with the second inclined surface of the slider;

[0018] The supporting inclined surface is the guiding inclined surface of the inner slide rail;

[0019] The second slide rail body is sleeved in the outer slide rail.

[0020] Optionally, a second rolling body is provided on the second inclined surface, and a top surface of the second rolling body is provided higher than the second inclined surface.

[0021] Optionally, a plurality of the sliders are provided, the number of the sliders is the same as the number of the blades, and the plurality of sliders are evenly spaced apart;

[0022] A first inclined surface is provided on a side of the slider close to the outer slide rail, and a second inclined surface is provided on a side of the slider close to the inner slide rail.

[0023] Optionally, a driving device is fixedly connected to the end surface of the inner slide rail away from the blade, and a power output end of the driving device is transmission-connected to the outer slide rail, and the driving device drives the outer slide rail to move linearly.

[0024] Optionally, the blade slide rail includes a third slide rail body, and the third slide rail body is provided with a plurality of slide grooves evenly arranged around the center of the third slide rail body, the length of the slide groove is set along the radial direction of the third slide rail body, the width of the slide groove is set corresponding to the width of the blade, and the end of the blade is slidably connected in the slide groove.

[0025] Optionally, the slide groove is a through groove provided through the third slide rail body, and a baffle is fixedly connected to the end of the third slide rail body away from the blade, and the baffle blocks the end of the slide groove away from the blade;

[0026] Alternatively, the chute is a blind hole slot with one end open and the other end closed, the end of the chute close to the blade is the open end, and the end away from the blade is the closed end.

[0027] As can be seen from the above technical solution, the cross-flow fan provided by the utility model is configured such that one end of the blade is radially slidably arranged in the blade slide rail, and the other end is slidably arranged via a slider. By providing an outer slide rail, the slider is pushed along the guide slope of the inner slide rail, thereby changing the spacing between the relatively arranged blades, thereby achieving a change in the diameter of the cross-flow fan. The cross-flow fan of the utility model meets the adjustment requirements of the cross-flow fan for large air volume by adjusting the fan diameter. The air output adjustment method is more diverse, and it can meet the air volume requirements of the air conditioner under different operating conditions, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a cross-flow fan provided by an embodiment of the present invention at one angle;

[0030] Figure 2 A schematic structural diagram of a cross-flow fan provided by an embodiment of the present invention from another angle;

[0031] Figure 3 A schematic structural diagram of a cross-flow fan provided by an embodiment of the present invention at another angle;

[0032] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the AA position;

[0033] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the BB position;

[0034] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure of the CC position;

[0035] Figure 7A schematic structural diagram of an outer slide rail provided in an embodiment of the present utility model;

[0036] Figure 8 A schematic cross-sectional view of the outer slide rail at the DD position provided in an embodiment of the present invention;

[0037] Figure 9 A schematic structural diagram of an angle of arrangement of the slider provided in an embodiment of the present utility model;

[0038] Figure 10 A schematic structural diagram of another angle of the arrangement of the slider provided in an embodiment of the present utility model;

[0039] Figure 11 A schematic structural diagram of the inner slide rail provided in an embodiment of the present utility model;

[0040] Figure 12 A schematic cross-sectional view of the EE position of the inner slide rail provided in an embodiment of the present invention;

[0041] Figure 13 A partially enlarged structural diagram of the connection position of the inner slide rail, the outer slide rail and the slider provided in an embodiment of the utility model;

[0042] Figure 14 A schematic structural diagram of a blade slide rail provided in an embodiment of the present utility model;

[0043] Figure 15 A schematic diagram of the structure of a fan provided by an embodiment of the present invention after its diameter is reduced;

[0044] Figure 16 This is a schematic structural diagram of a fan provided by an embodiment of the present invention after its diameter is enlarged.

[0045] in:

[0046] 1. Fan motor,

[0047] 2. Blade slide rail,

[0048] 201, motor shaft connecting hole, 202, slide groove,

[0049] 3. Baffle,

[0050] 4. Leaves,

[0051] 5. Inner slide rail,

[0052] 501, supporting inclined plane, 502, second slide rail body,

[0053] 6. Slider,

[0054] 601. The first inclined plane, 602. The second inclined plane,

[0055] 7. External slide rail,

[0056] 701, first hole groove, 702, second hole groove, 703, tapered hole, 704, first slide rail body,

[0057] 8. Coil spring,

[0058] 9. Electric push rod,

[0059] 10. Motor shaft. DETAILED DESCRIPTION

[0060] The utility model discloses a cross-flow fan, which meets the adjustment demand for large air volume of the cross-flow fan by adjusting the diameter of the fan, can meet the air volume demand of the air conditioner under different operating conditions, and has a wider range of applications.

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0062] See Figures 1 to 14 The cross-flow fan of the present invention comprises a blade rail 2, an inner rail 5, an outer rail 7, and blades 4. The blade rail 2 is rotatably mounted on an air conditioner base (not shown); the inner rail 5 is fixedly mounted on the base; and the outer rail 7 is axially slidably mounted on the base. One end of the blade 4 slides on the blade rail 2 and the other end is fixedly connected to a slider 6, which slides between the inner rail 5 and the outer rail 7. The blade 4 slides radially along the blade rail 2. A coil spring 8 is provided between the blade 4 and the slider 6 to facilitate horizontal sliding of the outer rail 7, pressing the slider 6 between the inner rail 5 and the outer rail 7. The blade rail 2 is connected to the fan motor 1. Rotation of the fan motor 1 drives the blade rail 2, which in turn drives the blade 4 and the slider 6 at its end. Propelled by the outer rail 7, the slider 6 slides along the guide slope of the inner rail 5, thereby changing the spacing between the opposing blades and, consequently, the diameter of the cross-flow fan.

[0063] One end of the coil spring 8 is bonded to the blade 4, and the other end is welded to the slider 6. The motor shaft 10 of the fan motor 1 is fixedly connected to the blade slide 2, and the fan motor 1 is bolted to the air conditioner base. The outer slide 7 is the position driving structure of the slider 6, and the inner slide 5 provides a guide and support surface for the slider 6.

[0064] The cross-flow fan of the present invention is configured such that one end of the blade 4 is radially slidably disposed within the blade rail 2, and the other end is slidably disposed via a slider 6. An outer slider 7 is provided to push the slider 6 along the guide slope of the inner slider 5, thereby changing the spacing between the relatively disposed blades 4 and achieving a change in the diameter of the cross-flow fan. By adjusting the fan diameter, the cross-flow fan of the present invention meets the need for adjusting the cross-flow fan's large air volume, provides a wider range of air output adjustment methods, and can meet the air volume requirements of air conditioners under different operating conditions, thus having a wider range of applications.

[0065] In order to push the slider 6, the outer slide rail 7 includes a first slide rail body 704. The first slide rail body 704 is provided with a first hole groove 701 at one end close to the blade 4 and a second hole groove 702 at the other end. Figure 7 and Figure 8 As shown, the aperture of the first hole groove 701 is larger than that of the second hole groove 702. The first hole groove 701 and the second hole groove 702 are connected through the tapered hole 703. The side surface of the tapered hole 703 is in sliding contact with the first inclined surface 601 of the slider 6. The first inclined surface 601 of the slider 6 is as shown in FIG. Figure 10 As shown, the thrust of the side surface of the tapered hole 703 facilitates the slider 6 to change its axial position along the cross-flow fan.

[0066] In one embodiment, the first hole groove 701, the tapered hole 703 and the second hole groove 702 are coaxially arranged, and the first hole groove 701 and the second hole groove 702 are both cylindrical holes, and the tapered hole 703 is a conical hole, which not only facilitates processing but also provides smoothness of sliding movement.

[0067] To improve the smoothness of the sliding of the slider 6, a first rolling element is disposed on the first inclined surface 601 of the slider 6. The top surface of the first rolling element is arranged higher than the surface of the first inclined surface 601. This causes the sliding friction between the first rolling element and the side surface of the tapered hole 703 to shift to rolling friction. Compared to sliding friction, rolling friction has lower frictional force and lower motion resistance. Specifically, the first rolling element is a ball, which is rotatably connected to the mounting groove on the first inclined surface 601.

[0068] Furthermore, the inner slide rail 5 includes a second slide rail body 502, and the second slide rail body 502 is provided with a support inclined surface 501 at one end close to the blade 4. The support inclined surface 501 is in sliding contact with the second inclined surface 602 of the slider 6. The second inclined surface 602 of the slider 6 is in reference to Figure 10The support slope 501 is the guiding slope of the inner rail 5 and is used to guide and support the slider 6 during the sliding process. The second rail body 502 is sleeved within the outer rail 7. To facilitate the sleeve, the outer diameter of the second rail body 502 is smaller than the diameter of the second aperture 702. A gap exists between the inner surface of the second aperture 702 and the outer surface of the second rail body 502, preventing the second rail body 502 from affecting the sliding of the outer rail 7.

[0069] Similarly, to improve the smoothness of the sliding of the slider 6, a second rolling element is provided on the second inclined surface 602. The top surface of the second rolling element is arranged higher than the second inclined surface 602. This changes the sliding friction between the second rolling element and the supporting inclined surface 501 to rolling friction, thereby reducing the movement resistance of the slider 6. Specifically, the second rolling element is a ball, which is rotatably connected to the mounting groove on the second inclined surface 602.

[0070] Since the blades 4 are provided with multiple pieces, correspondingly, the sliders 6 are provided with multiple pieces, such as Figure 9 and Figure 10 As shown, the number of sliders 6 is the same as the number of blades 4. A slider 6 is connected to the end of each blade 4, and multiple sliders 6 are evenly spaced. Specifically, the slider 6 is provided with a first inclined surface 601 on the side close to the outer slide rail 7. The first inclined surface 601 contacts the tapered surface of the tapered hole 703. The slider 6 is provided with a second inclined surface 602 on the side close to the inner slide rail 5. The second inclined surface 602 contacts the support inclined surface 501. Figure 13 shown.

[0071] In order to drive the outer rail 7 to move axially, a drive device is fixedly connected to the end surface of the inner rail 5 away from the blade 4, and the power output end of the drive device is fixedly connected to the end surface of the outer rail 7. In one embodiment, the drive device is an electric push rod 9, which drives the outer rail 7 to move axially and linearly. In other embodiments, the drive device is a stepper motor, and the power output of the stepper motor is transmitted to the outer rail 7 through an intermediate transmission mechanism. The intermediate transmission mechanism is used to convert the rotation of the stepper motor into linear motion of the outer rail 7. The intermediate transmission mechanism is a mechanism commonly used by those skilled in the art, such as a rack and pinion transmission mechanism, and will not be described in detail here.

[0072] In order to facilitate the sliding limit of the end of the blade 4 away from the slider 6, the blade slide rail 2 includes a third slide rail body, such as Figure 14As shown, the third slide rail body is a disc structure, and is provided with a plurality of slide grooves 202 evenly arranged around the center of the third slide rail body. The slide grooves 202 are oblong holes, and the length of the slide grooves 202 is set along the radial direction of the third slide rail body. The width of the slide grooves 202 is set corresponding to the width of the blade 4, so that the end of the blade 4 can be slidably connected in the slide grooves 202. The blade 4 slides along the length direction of the slide grooves 202. In order to facilitate connection with the fan motor 1, a motor shaft connecting hole 201 is provided at the axis center position of the blade slide rail 2, and the end of the motor shaft 10 is connected to the motor shaft connecting hole 201.

[0073] Furthermore, in one embodiment, the slide groove 202 is a through groove set through the third slide rail body, and the end of the third slide rail body away from the blade 4 is fixedly connected to the baffle 3, and the baffle 3 is used to block the end of the slide groove 202 away from the blade 4 to prevent the end of the blade 4 from extending from the slide groove 202. The baffle 3 is arranged in conjunction with the coil spring 8 to ensure that the slider 6 is always in reliable contact with the support slope 501 and the side of the tapered hole 703.

[0074] In another embodiment, the chute 202 is a blind hole with one end open and the other end closed. The end of the chute 202 close to the blade 4 is open to facilitate insertion of the blade 4, while the end away from the blade 4 is closed to limit the end of the blade 4. In this embodiment, the baffle 3 is not required.

[0075] The fan diameter of the cross-flow fan of the present invention is reduced in the following process: the driving device rotates forward, controlling the outer slide rail 7 to move leftward relative to the inner slide rail 5, as shown in FIG. Figure 15 As shown, the outer rail 7 pushes the slider 6 to move along the inner rail 5 toward the axis, thereby driving the blade 4 to move toward the center of the inner rail 5. The driving device stops working and the position of the blade 4 is fixed. At this time, the diameter of the cross-flow fan becomes smaller. The process of increasing the diameter of the cross-flow fan is as follows: the driving device is reversed and controls the outer rail 7 to move to the right, as shown in FIG. Figure 16 As shown, the blades 4 are driven to move back toward the center of the inner slide rail 5, the driving device stops working, the position of the blades is fixed, and the diameter of the fan becomes larger.

[0076] The cross-flow fan of the present invention can adjust the diameter of the fan structure formed by the multiple blades 4 of the fan to meet the air volume requirements of the air conditioner under different operating conditions, and has a wider range of uses.

[0077] In the description of this solution, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on this solution.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this solution, "plurality" means two or more, unless otherwise specifically defined.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cross-flow fan, characterized in that: include: The blade slide rail is rotatably arranged on the air conditioner base; An inner slide rail, fixedly arranged on the air conditioner base; An outer slide rail is axially slidably arranged on the air conditioner base; A blade, one end of which is slidably arranged on the blade slide rail, and the other end is fixedly connected to the slider, the slider is slidably arranged between the inner slide rail and the outer slide rail, and the slider can slide along the guide inclined surface of the inner slide rail under the pushing action of the outer slide rail; The blade is connected to the blade slide rail in a radially sliding manner along the blade slide rail. A coil spring is provided between the blade and the slider. The blade slide rail is connected to the fan motor.

2. The cross-flow fan according to claim 1, wherein The outer slide rail includes a first slide rail body, a first hole groove is provided at one end of the first slide rail body close to the blade, and a second hole groove is provided at the other end. The aperture of the first hole groove is larger than the aperture of the second hole groove. The first hole groove and the second hole groove are connected by a tapered hole, and the hole side of the tapered hole is in sliding contact with the first inclined surface of the slider.

3. The cross-flow fan according to claim 2, wherein: The first hole groove, the tapered hole and the second hole groove are coaxially arranged; The first hole groove and the second hole groove are both cylindrical holes, and the tapered hole is a tapered hole.

4. The cross-flow fan according to claim 2, wherein: A first rolling body is arranged on the first inclined surface, and a top surface of the first rolling body is arranged higher than a surface of the first inclined surface.

5. The cross-flow fan according to claim 1, wherein The inner slide rail includes a second slide rail body, and an end of the second slide rail body close to the blade is provided with a supporting inclined surface, and the supporting inclined surface is in sliding contact with the second inclined surface of the slider; The supporting inclined surface is the guiding inclined surface of the inner slide rail; The second slide rail body is sleeved in the outer slide rail.

6. The cross-flow fan according to claim 5, wherein: A second rolling body is arranged on the second inclined surface, and a top surface of the second rolling body is arranged higher than the second inclined surface.

7. The cross-flow fan according to claim 1, wherein There are multiple sliders, the number of which is the same as the number of blades, and the multiple sliders are evenly spaced. A first inclined surface is provided on a side of the slider close to the outer slide rail, and a second inclined surface is provided on a side of the slider close to the inner slide rail.

8. The cross-flow fan according to claim 1, wherein A driving device is fixedly connected to the end surface of the inner slide rail away from the blade, and a power output end of the driving device is transmission-connected to the outer slide rail, and the driving device drives the outer slide rail to move linearly.

9. The cross-flow fan according to claim 1, wherein The blade slide rail includes a third slide rail body, on which a plurality of slide grooves are evenly arranged around the center of the third slide rail body. The length of the slide groove is arranged along the radial direction of the third slide rail body, and the width of the slide groove is set corresponding to the width of the blade. The end of the blade is slidably connected to the slide groove.

10. The cross-flow fan according to claim 9, wherein The slide groove is a through groove provided through the third slide rail body, and a baffle is fixedly connected to the end of the third slide rail body away from the blade, and the baffle blocks the end of the slide groove away from the blade; Alternatively, the chute is a blind hole slot with one end open and the other end closed, the end of the chute close to the blade is the open end, and the end away from the blade is the closed end.

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