Fan and air conditioner with multiple blades

Abstract

The present invention discloses a fan and an air conditioner with multiple blades. The fan comprises: multiple blades, all of which are arranged on a coaxial line; a driving device, the blades are drivingly connected to the driving device, and under the drive of the driving device, the multiple blades rotate at independent speeds. The fan of the present invention can control the speeds of blades at different positions by making the multiple blades rotate at independent speeds, thereby controlling the air volume at different positions and achieving the purpose of uniform air volume.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a fan with multi-section fan blades and an air conditioner. Background Art

[0002] When the existing air conditioner uses a wind wheel to discharge air, the air volume in the indoor unit of the air conditioner is small at both ends and large in the middle in the axial direction of the wind wheel. Therefore, it is easier to form unstable vortices at the volute tongue located in the middle part of the wind wheel, resulting in greater noise at the volute tongue located in the middle part of the wind wheel. Summary of the invention

[0003] The invention discloses a fan and an air conditioner with multi-section fan blades, which solve the problem of uneven air volume when the fan blades discharge air.

[0004] According to one aspect of the present invention, a fan is disclosed, comprising: a plurality of fan blades, all of which are coaxially arranged; a driving device, the fan blades being drivingly connected to the driving device, and under the drive of the driving device, the plurality of fan blades rotate at independent speeds.

[0005] Furthermore, the fan also includes: multiple transmission assemblies, each of which corresponds to the fan blades one by one, each of which is connected to the corresponding fan blade, multiple transmission assemblies have separate transmission ratios, and all of the transmission assemblies are drive-connected to the drive device.

[0006] Furthermore, the driving device comprises: a transmission shaft, all the fan blades are arranged on the same transmission shaft, and the fan blades are rotatable relative to the transmission shaft.

[0007] Furthermore, the transmission assembly includes: a driving gear, which is sleeved on the transmission shaft and rotates synchronously with the transmission shaft; an internal gear, which is connected to the fan blades and drives the fan blades to rotate; an intermediate gear, which is meshed with the driving gear and the internal gear at the same time, and the driving gear drives the internal gear to rotate through the intermediate gear to drive the fan blades to rotate.

[0008] Furthermore, the transmission assembly includes a planetary gear set, a sun gear of the planetary gear set is drivingly connected to the driving device, and the planetary gears of the planetary gear set are drivingly connected to the wind blades.

[0009] Furthermore, an end cover is provided at the end portion of the fan blade in the axial direction, a mounting hole for passing the transmission shaft is provided on the end cover, and the internal gear is fixedly arranged on the end cover.

[0010] Furthermore, there are a plurality of driving devices, each of which corresponds to the fan blades one by one, and each of the driving devices is drivingly connected to the corresponding fan blade, and the driving device drives the corresponding fan blade to rotate.

[0011] Furthermore, the fan is a cross-flow fan.

[0012] Furthermore, the plurality of blades include a first group of sub-blades and two second group of sub-blades, the two second group of sub-blades are respectively located at two ends of the first group of sub-blades, and a rotation speed of the first group of sub-blades is less than a rotation speed of the second group of sub-blades.

[0013] According to a second aspect of the present invention, an air conditioner is disclosed, comprising the above-mentioned air conditioner.

[0014] The fan of the present invention makes a plurality of fan blades rotate at independent rotation speeds, thereby controlling the rotation speeds of the fan blades at different positions, and further controlling the air volume at different positions, thereby achieving the purpose of uniform air output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a fan according to an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of a transmission assembly according to an embodiment of the present invention;

[0017] Legend: 10, fan blade; 11, end cover; 20, transmission assembly; 21, driving gear; 22, internal gear; 23, intermediate gear; 30, driving device. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the embodiments, but is not limited to the contents of the description.

[0019] like Figure 1 and Figure 2 As shown, the present invention discloses a fan, comprising: a plurality of fan blades 10 and a driving device 30, all the fan blades 10 are arranged coaxially; the fan blades 10 are drivingly connected to the driving device 30, and the plurality of fan blades 10 rotate at independent speeds under the drive of the driving device 30. The fan of the present invention can control the speeds of the fan blades 10 at different positions by making the plurality of fan blades 10 rotate at independent speeds, thereby controlling the air volume at different positions, and achieving the purpose of uniform air volume.

[0020] In the above embodiment, the fan further includes: a plurality of transmission assemblies 20, each of which corresponds to the fan blades 10, each of which is connected to the corresponding fan blade 10, and the plurality of transmission assemblies 20 have a separate transmission ratio, and all of the transmission assemblies 20 are drivingly connected to the drive device 30. The fan of the present invention is provided with a plurality of transmission assemblies 20, each of which has a separate transmission ratio, so that the same drive device 30 can simultaneously drive the plurality of fan blades 10 to rotate at different speeds, so that the air output of each fan blade 10 is the same, thereby achieving the purpose of uniform air output.

[0021] In the above embodiment, the driving device 30 includes: a transmission shaft, all the fan blades 10 are arranged on the same transmission shaft, and the fan blades 10 are rotatable relative to the transmission shaft. The fan of the present invention arranges all the fan blades 10 on the same transmission shaft, and the fan blades 10 are rotatable relative to the transmission shaft, so that each fan blade 10 can rotate independently, thereby facilitating the adjustment of the air volume.

[0022] In the above embodiment, the transmission assembly 20 includes: a driving gear 21, an internal gear 22 and an intermediate gear 23. The driving gear 21 is sleeved on the transmission shaft and rotates synchronously with the transmission shaft; the internal gear 22 is connected to the fan blade 10, and the internal gear 22 drives the fan blade 10 to rotate; the intermediate gear 23 is meshed with the driving gear 21 and the internal gear 22 at the same time, and the driving gear 21 drives the internal gear 22 to rotate through the intermediate gear 23 to drive the fan blade 10 to rotate. The fan of the present invention is provided with a driving gear 21, an internal gear 22 and an intermediate gear 23, so that the driving gear 21 drives the internal gear 22 to rotate through the intermediate gear 23 to drive the fan blade 10 to rotate. By adjusting the ratio of the gears, the rotation speed of each fan blade 10 can be conveniently adjusted, thereby achieving different rotation speeds of the fan blades 10 on a transmission shaft, so that the air output of each fan blade 10 is the same, and the purpose of uniform air output is achieved.

[0023] In another embodiment, the transmission assembly 20 includes a planetary gear set, the sun gear of the planetary gear set is drivingly connected to the driving device 30, and the planetary gears of the planetary gear set are drivingly connected to the fan blades 10. The fan of the present invention can conveniently adjust the rotation speed of each fan blade 10 by using a planetary gear set, and can conveniently adjust the rotation speed of each fan blade 10 by using a planetary gear set with different transmission ratios, thereby achieving different rotation speeds of the fan blades 10 on one transmission shaft, so that the air output of each fan blade 10 is the same, and the purpose of uniform air output is achieved.

[0024] In the above embodiment, an end cap 11 is provided at the end of the fan blade 10 in the axial direction, a mounting hole for passing the transmission shaft is provided on the end cap 11, and the internal gear 22 is fixedly provided on the end cap 11. The fan of the present invention can facilitate the installation of the fan blade 10 by providing the end cap 11, and can also facilitate the installation of the internal gear 22, and facilitate installation and disassembly.

[0025] In another embodiment, there are multiple driving devices 30, and the driving devices 30 correspond to the fan blades 10 one by one. Each driving device 30 is drivingly connected to the corresponding fan blade 10, and the driving device 30 drives the corresponding fan blade 10 to rotate. The fan of the present invention is provided with multiple driving devices 30, and each driving device 30 drives a corresponding fan blade 10 to rotate, so that each fan blade 10 can rotate at its own independent speed, so that the speed of the fan blades 10 at different positions can be controlled, and then the air volume at different positions can be controlled to achieve the purpose of uniform air volume.

[0026] It can be understood that in the above embodiments, the fan is a cross-flow fan.

[0027] In the above embodiment, the plurality of blades 10 include a first group of sub-blades and two second groups of sub-blades, the two second groups of sub-blades are respectively located at the two ends of the first group of sub-blades, and the rotation speed of the first group of sub-blades is lower than that of the second group of sub-blades, so that the air volume in the middle can be reduced and the air volume in the two sections can be increased, so as to achieve the purpose of balancing the air volume.

[0028] According to a second aspect of the present invention, an air conditioner is disclosed, comprising the above-mentioned air conditioner.

[0029] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the embodiments here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A fan, characterized in that: include: A plurality of fan blades (10), all of the fan blades (10) being arranged coaxially, the plurality of fan blades (10) comprising a first group of sub-fan blades and two second group of sub-fan blades, the two second group of sub-fan blades being respectively located at two ends of the first group of sub-fan blades, and the rotation speed of the first group of sub-fan blades being less than the rotation speed of the second group of sub-fan blades; A driving device (30), wherein the fan blades (10) are drivingly connected to the driving device (30), and under the drive of the driving device (30), the plurality of fan blades (10) rotate at independent speeds; the driving device (30) comprises a transmission shaft, and all the fan blades (10) are arranged on the same transmission shaft, and the fan blades (10) are rotatable relative to the transmission shaft; a plurality of transmission assemblies (20), the transmission assemblies (20) corresponding to the fan blades (10) one by one, each of the transmission assemblies (20) being connected to the corresponding fan blade (10), the plurality of transmission assemblies (20) having a separate transmission ratio, and all of the transmission assemblies (20) being drivingly connected to the drive device (30); The transmission assembly (20) comprises: A driving gear (21), the driving gear (21) being sleeved on the transmission shaft and rotating synchronously with the transmission shaft; an internal gear (22), the internal gear (22) being connected to the fan blade (10), the internal gear (22) driving the fan blade (10) to rotate; an end cover (11) being provided at an axial end of the fan blade (10), the end cover (11) being provided with a mounting hole for passing the transmission shaft, the internal gear (22) being fixedly arranged on the end cover (11); An intermediate gear (23), the intermediate gear (23) meshing with the driving gear (21) and simultaneously meshing with the internal gear (22), the driving gear (21) driving the internal gear (22) to rotate via the intermediate gear (23) to drive the fan blade (10) to rotate.

2. The fan according to claim 1, characterized in that: The fan is a cross-flow fan.

3. An air conditioner, characterized in that: The invention comprises the fan according to any one of claims 1 to 2.

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