Air duct rotating mechanism, indoor unit and air conditioner

Abstract

The present invention provides an air duct rotating mechanism, an indoor unit and an air conditioner, wherein the air duct rotating mechanism comprises: a fan, wherein the fan comprises fan blades and a fan housing, wherein the fan blades and the fan housing are both rotatably arranged to supply air and change the air outlet angle; two bearing assemblies, which are respectively arranged on opposite sides of the fan along the axial direction of the fan and fixed on the body of the indoor unit of the air conditioner, wherein the two bearing assemblies each comprise a housing bearing connected to a housing rotating shaft of the fan housing to support it; a connecting shaft, which is used to connect the housing bearing to the housing rotating shaft; a first stopper, which is used to stop the axial movement of the fan housing; wherein the first stopper is arranged on the connecting shaft to contact the housing bearing; or the first stopper is arranged on the housing bearing to contact the connecting shaft, so as to solve the problem of axial movement of the fan housing of the air conditioner in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air duct rotating mechanism, an indoor unit and an air conditioner. Background Art

[0002] When the existing wall-mounted air conditioner is working, the upper and lower air outlet directions and angles of the air conditioner are adjusted by the up and down swinging of the air guide plate. However, the air guide plate of the wall-mounted air conditioner has some problems: for example, the upper and lower air supply angles are limited, resulting in poor comfort, and the upper and lower sweeping angles of the air guide plate are small and cannot meet the user's usage requirements.

[0003] In order to solve the above problems, an air conditioner indoor unit is proposed, wherein the fan housing of the air conditioner indoor unit can rotate to realize large-angle rotation and air supply.

[0004] However, when designing an air conditioner in which the fan housing can rotate to supply air, the problem of axial movement of the fan housing needs to be solved. The axial movement of the fan housing needs to be restricted to maintain the stability of the rotating mechanism. Summary of the invention

[0005] The main purpose of the present invention is to provide an air duct rotating mechanism, an indoor unit and an air conditioner to solve the problem of axial movement of the fan housing of the air conditioner in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air duct rotation mechanism, comprising: a fan, the fan comprising a fan blade and a fan housing, the fan blade and the fan housing both being rotatably arranged to supply air and change the air outlet angle; two bearing assemblies, respectively arranged on opposite sides of the fan along the axial direction of the fan and fixed to the body of the indoor unit of the air conditioner, the two bearing assemblies each comprising a housing bearing connected to the housing shaft of the fan housing to support it; a connecting shaft, used to connect the housing bearing to the housing shaft; a first stop portion, used to stop the axial movement of the fan housing; wherein the first stop portion is arranged on the connecting shaft for contacting the housing bearing; or the first stop portion is arranged on the housing bearing for contacting the connecting shaft.

[0007] Furthermore, the first stop portion is arranged on the connecting shaft, and the connecting shaft also includes a first sleeve portion for sleeve-engaging with the housing bearing. The first stop portion is located on a side of the first sleeve portion away from the fan housing for contacting the housing bearing.

[0008] Further, the number of connecting shafts is one, and the connecting shaft is connected to the housing bearing of one of the two bearing assemblies; in the other of the two bearing assemblies, the housing bearing includes a second sleeve portion for mutually sleeved with the housing rotating shaft and a second stop portion located on the side of the housing bearing away from the fan housing; or the number of connecting shafts is two, and the two connecting shafts are arranged in a one-to-one correspondence with the two bearing assemblies, and each connecting shaft is used to connect to the housing bearing of the corresponding bearing assembly.

[0009] Furthermore, the connecting shaft is integrally formed with the housing shaft or is detachably connected thereto.

[0010] Furthermore, the connecting shaft and the shell shaft are connected by a fastener, one of the connecting shaft and the shell shaft is provided with a through hole for the fastener to pass through, and the other of the connecting shaft and the shell shaft is provided with a fastening hole for the fastener to be inserted, and one end of the fastener is inserted into the fastening hole after passing through the through hole.

[0011] Furthermore, the air duct rotating mechanism includes a transmission structure for transmission connection with the fan housing; along the axial direction of the fan, the axial length of the installation shaft section of the first sleeve portion located between the first stop portion and the housing shaft for installing the housing bearing is L 1 ; The axial length of the housing bearing is L 2 ; The axial disengagement dimension of the transmission structure is L 3 ; The allowable axial movement of the fan housing is μ; where μ = L 1 -L 2 , 0<μ<L 3 .

[0012] Furthermore, 0<μ<1 / 3L 3 .

[0013] Furthermore, both bearing assemblies include: a bearing seat for fixing on the body of the indoor unit of the air conditioner; wherein the housing bearing is arranged on the bearing seat, and the bearing seat includes a first mounting section for mounting the housing bearing.

[0014] Furthermore, at least one of the two bearing assemblies includes: a fan blade bearing, which is used to be mutually sleeved with the fan blade shaft of the fan blade to support the fan blade; wherein the fan blade bearing is arranged on a bearing seat, and the rotation axis of the fan blade shaft, the rotation axis of the shell shaft, the rotation axis of the fan blade bearing and the rotation axis of the shell bearing are collinear.

[0015] Furthermore, at least one of the two bearing assemblies includes: a fan blade bearing, which is used to be mutually sleeved with the fan blade shaft of the fan blade to support the fan blade; a shell bearing is used to be fixed on the body of the indoor unit of the air conditioner, the connecting shaft is rotatably arranged relative to the shell bearing, the fan blade bearing is arranged on the shell bearing and the rotation axis of the fan blade bearing, the rotation axis of the fan blade shaft and the rotation axis of the shell shaft are collinear.

[0016] Furthermore, the housing bearing is a hollow cylindrical structure; wherein the fan blade bearing and the housing bearing are both arranged on the inner side of the bearing seat, and the fan blade bearing is located on the side of the housing bearing away from the fan housing; or the fan blade bearing is arranged on the inner side of the bearing seat, and the housing bearing is arranged on the outer side of the bearing seat; or the fan blade bearing and the housing bearing are both arranged on the outer side of the bearing seat, and the fan blade bearing is located on the side of the housing bearing close to the fan housing.

[0017] Furthermore, the first sleeve joint and the shell shaft are hollow cylindrical structures; wherein the shell bearing is located on the inner side of the bearing seat, and the first stop portion is an annular plate body arranged around the outer peripheral surface of the first sleeve joint; or the shell bearing is located on the outer side of the bearing seat, and the first stop portion is an annular plate body arranged around the inner wall surface of the first sleeve joint.

[0018] Furthermore, the first sleeve connection portion and the housing shaft are hollow columnar structures; wherein the first sleeve connection portion is sleeved on the outer circumferential surface of the housing shaft; or the housing shaft is sleeved on the outer circumferential surface of the first sleeve connection portion.

[0019] Furthermore, a bearing sleeve is provided on the outer sleeve of the fan blade bearing; the bearing seat includes a second mounting section for installing the bearing sleeve, and the second mounting section is provided with a bearing sleeve limiting portion for limiting the axial movement of the bearing sleeve; the bearing sleeve is provided with a limiting groove that cooperates with the bearing sleeve limiting portion, and the bearing sleeve limiting portion and the limiting groove are used together to limit the bearing sleeve.

[0020] Furthermore, the air duct rotating mechanism includes a transmission structure for transmission connection with the fan housing; along the axial direction of the fan, the axial distance between the housing bearing and the bearing sleeve is L4; the axial length of the first stopper is L5; the axial separation dimension of the transmission structure is L 3 ; The allowable axial movement size of the fan housing is μ; where μ = L4-L5, 0<μ<L 3 .

[0021] Furthermore, 0<μ<1 / 3L 3 .

[0022] Furthermore, the air duct rotation mechanism also includes: a first motor, which is arranged at one end of one of the bearing assemblies away from the fan, so as to be driven and connected to the fan blades to drive the fan blades to rotate; and / or a second motor, which is driven and connected to the fan casing through a transmission structure to drive the fan casing to rotate.

[0023] Furthermore, the first motor shaft of the first motor extends into the fan casing and is directly connected to the blade body of the fan blade; wherein, a through hole for the first motor shaft to pass through is provided on the bearing assembly close to the first motor and the casing shaft of the fan casing.

[0024] Furthermore, the diameter of the fan blade shaft is D 1 , the inner diameter of the housing bearing is D 2 , where D 2 >D 1 .

[0025] Furthermore, 7D 1 ≥D 2 >D 1 .

[0026] According to a second aspect of the present invention, an indoor unit is provided, comprising an air duct rotation mechanism, wherein the air duct rotation mechanism is the above-mentioned air duct rotation mechanism.

[0027] According to a third aspect of the present invention, there is provided an air conditioner, comprising an indoor unit, wherein the indoor unit is the indoor unit described above.

[0028] According to the technical solution of the present invention, the air duct rotating mechanism of the present invention comprises a fan, two bearing assemblies and a connecting shaft, the fan comprises a fan blade and a fan housing, the fan blade and the fan housing can rotate independently of each other, so as to replace the air guide plate of the indoor unit of the air conditioner in the prior art by the fan housing to realize the upper and lower air supply of the indoor unit of the wall-mounted air conditioner or the left and right air supply of the indoor unit of the cabinet air conditioner, thereby increasing the air volume and wind sweeping angle of the indoor unit, improving the overall performance of the air conditioner, and meeting the comfort requirements of the user; the two bearing assemblies are respectively arranged on opposite sides of the fan along the axial direction of the fan and fixed on the body of the indoor unit of the air conditioner, the two bearing assemblies each comprise a housing bearing for connecting to the fan housing to support it, and the connecting shaft is used to connect the housing bearing to the housing rotating shaft; a first stopper is used to stop the axial movement of the fan housing; wherein the first stopper is arranged on the connecting shaft for contacting with the housing bearing; or the first stopper is arranged on the housing bearing for contacting with the connecting shaft. In this way, the influence of the axial movement of the fan housing during rotation on the fan performance is reduced, thereby ensuring the stability and reliability of the air duct rotation mechanism and solving the problem of axial movement of the fan housing of the air conditioner in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 It shows a schematic structural diagram of a first embodiment of an air duct rotating mechanism according to the present invention;

[0031] Figure 2 Shows Figure 1 An exploded view of the air duct rotation mechanism is shown;

[0032] Figure 3 Shows Figure 1 A half-section view of the air duct rotating mechanism shown;

[0033] Figure 4 Shows Figure 3 A partial enlarged view of the air duct rotating mechanism at position A is shown;

[0034] Figure 5 Shows Figure 1 An exploded view of the first bearing assembly of the air duct rotating mechanism shown;

[0035] Figure 6 A half-section view of a second embodiment of the air duct rotating mechanism according to the present invention is shown;

[0036] Figure 7 Shows Figure 6 A partial enlarged view of the air duct rotating mechanism at position B is shown;

[0037] Figure 8 Shows Figure 1 or Figure 6 An exploded view of the second bearing assembly of the air duct rotating mechanism shown;

[0038] Fig. 9 Shows Figure 8 a half-section view of a second bearing assembly shown;

[0039] Fig.10 A partial structural schematic diagram of a third embodiment of the air duct rotating mechanism according to the present invention is shown;

[0040] Fig.11 A partial structural schematic diagram of a fourth embodiment of the air duct rotating mechanism according to the present invention is shown;

[0041] Fig.12 A partial structural schematic diagram of a fifth embodiment of the air duct rotating mechanism according to the present invention is shown;

[0042] Fig.13 A partial structural schematic diagram showing a sixth embodiment of the air duct rotating mechanism according to the present invention; and

[0043] Fig.14 A partial structural schematic diagram of a seventh embodiment of the air duct rotating mechanism according to the present invention is shown.

[0044] The above drawings include the following reference numerals:

[0045] 1. fan; 11. fan blade; 111. blade body; 112. fan blade shaft; 12. fan housing; 121. housing body; 122. housing shaft;

[0046] 2. Bearing assembly; 2001. First bearing assembly; 2002. Second bearing assembly; 20. Bearing seat; 201. First mounting section; 202. Second mounting section; 203. Bearing sleeve limiting portion; 21. Fan blade bearing; 22. Housing bearing; 221. Second sleeve connection portion; 222. Second stop portion; 23. Bearing sleeve;

[0047] 3. Transmission structure; 4. First motor; 41. First motor shaft; 5. Second motor;

[0048] 6. Connecting shaft; 61. First sleeve connection portion; 62. First stop portion; 7. Fastener. DETAILED DESCRIPTION

[0049] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] like Figures 1 to 14 As shown, the present invention provides an air duct rotation mechanism, comprising: a fan 1, the fan 1 comprising a fan blade 11 and a fan housing 12, the fan blade 11 and the fan housing 12 are both rotatably arranged for supplying air and changing the air outlet angle; two bearing assemblies 2, which are respectively arranged on opposite sides of the fan 1 along the axial direction of the fan 1 and fixed on the body of the indoor unit of the air conditioner, and the two bearing assemblies 2 each include a housing bearing 22 for connecting to a housing rotating shaft 122 of the fan housing 12 to support it; a connecting shaft 6, which is used to connect the housing bearing 22 to the housing rotating shaft 122; wherein a first stop portion 62 is provided on one of the connecting shaft 6 and the housing bearing 22, and the first stop portion 62 is used to contact the other of the connecting shaft 6 and the housing bearing 22 to stop the axial movement of the fan housing 12.

[0051] The air duct rotating mechanism of the present invention comprises a fan 1, two bearing assemblies 2 and a connecting shaft 6. The fan 1 comprises a fan blade 11 and a fan housing 12. The fan blade 11 and the fan housing 12 can rotate independently of each other, so that the fan housing 12 replaces the air guide plate of the indoor unit of the air conditioner in the prior art to realize the upward and downward air supply of the indoor unit of the wall-mounted air conditioner or the left and right air supply of the indoor unit of the cabinet air conditioner, thereby increasing the air flow and wind sweeping angle of the indoor unit, improving the overall performance of the air conditioner, and meeting the comfort requirements of the user; the two bearing assemblies 2 are arranged along the The axial direction of the fan 1 is respectively arranged on opposite sides of the fan 1 and fixed on the body of the indoor unit of the air conditioner. The two bearing assemblies 2 each include a housing bearing 22 for connecting with the fan housing 12 to support it. The connecting shaft 6 is used to connect the housing bearing 22 with the housing rotating shaft 122; the first stopper 62 is used to stop the axial movement of the fan housing 12; wherein the first stopper 62 is arranged on the connecting shaft 6 to contact with the housing bearing 22; or the first stopper 62 is arranged on the housing bearing 22 to contact with the connecting shaft 6. In this way, the influence of the axial movement of the fan housing 12 during the rotation process on the fan performance is reduced, thereby ensuring the stability and reliability of the air duct rotation mechanism, and solving the problem of axial movement of the fan housing of the air conditioner in the prior art.

[0052] In at least one embodiment of the present invention, the first stop portion 62 is arranged on the connecting shaft 6, and the connecting shaft 6 also includes a first sleeve portion 61 for mutually sleeved with the housing bearing 22, and the first stop portion 62 is located on the side of the first sleeve portion 61 away from the fan housing 12 for contacting the housing bearing 22.

[0053] Optionally, there is one connecting shaft 6, which is connected to the housing bearing 22 of one of the two bearing assemblies 2; in the other of the two bearing assemblies 2, the housing bearing 22 includes a second sleeve portion 221 for sleeve-engaging with the housing rotating shaft 122 and a second stop portion 222 located on the side of the housing bearing 22 away from the fan housing 12, the second stop portion 222 being used to contact the corresponding housing rotating shaft 122 so as to stop the axial movement of the fan housing 12 through the first stop portion 62 and the second stop portion 222; or there are two connecting shafts 6, which are arranged in a one-to-one correspondence with the two bearing assemblies 2, and each connecting shaft 6 is respectively used to connect to the housing bearing 22 of the corresponding bearing assembly 2 so as to stop the axial movement of the fan housing 12 through the two first stop portions 62.

[0054] Optionally, the connecting shaft 6 and the housing shaft 122 are integrally formed or detachably connected. In this way, the connecting shaft 6 and the housing shaft 122 can be integrated or divided into two parts. Figure 4 and Figure 7As shown, the portion of the first sleeve portion 61 located between the first stop portion 62 and the housing shaft 122 and the first stop portion 62 and the housing shaft 122 together form a groove for accommodating the housing bearing 22 to limit the axial movement of the fan housing 12, thereby ensuring the stability of the air duct rotation mechanism.

[0055] Preferably, the connecting shaft 6 is made of lubricating material, or the surface of the connecting shaft 6 that contacts the housing bearing 22 is coated with lubricant, so that the connecting shaft 6 rotates relative to the housing bearing 22 driven by the housing rotating shaft 122 .

[0056] like Figures 3 to 5 As shown, when the connecting shaft 6 and the shell shaft 122 are detachably connected via the fastener 7, a through hole for the fastener 7 to pass through is provided on one of the connecting shaft 6 and the shell shaft 122, and a fastening hole for the fastener 7 to be inserted is provided on the other of the connecting shaft 6 and the shell shaft 122, and one end of the fastener 7 is inserted into the fastening hole after passing through the through hole.

[0057] Specifically, the fastener 7 is a screw, a through hole for the fastener 7 to pass through is provided on the housing shaft 122, a threaded hole for threaded connection with the screw is provided on the connecting shaft 6, and one end of the screw passes through the through hole and is tightened in the threaded hole.

[0058] The air duct rotating mechanism of the present invention comprises a transmission structure 3 for transmission connection with the fan housing 12; along the axial direction of the fan 1, the axial length of the installation shaft section (i.e., the groove) of the first sleeve portion 61 located between the first stop portion 62 and the housing shaft 122 for installing the housing bearing 22 is L 1 ; The axial length of the housing bearing 22 is L 2 ; The axial disengagement dimension of the transmission structure 3 is L 3 ; The allowable axial movement size of the fan housing 12 is μ; where μ = L 1 -L 2 , 0<μ<L 3 .

[0059] Preferably, 0<μ<1 / 3L 3 .

[0060] Specifically, when the transmission structure 3 is a gear assembly, the axial disengagement dimension of the transmission structure 3 refers to the meshing tooth width between two meshing gears. When the axial movement dimension of the fan housing 12 is greater than or equal to the meshing tooth width, the two meshing gears will be completely separated and unable to transmit power; when the transmission structure 3 is a crank rocker assembly, the axial disengagement dimension of the transmission structure 3 refers to the length of the connecting piece between two interconnected parts. When the axial movement dimension of the fan housing 12 is greater than or equal to the length of the connecting piece, the two interconnected parts will be completely separated and unable to transmit power.

[0061] The allowable axial movement dimension μ of the fan housing 12 refers to a value that will not cause an adverse effect on the rotation of the fan housing 12 when the axial movement dimension of the fan housing 12 is less than or equal to μ.

[0062] The air duct rotation mechanism of the present invention also includes: a first motor 4, which is arranged at one end of one of the bearing assemblies 2 away from the fan 1, and is used to be driven and connected to the fan blades 11 to drive the fan blades 11 to rotate, so as to provide air volume; and / or a second motor 5, which is arranged on one side of the fan housing 12 and is driven and connected to the fan housing 12 through a transmission structure 3 to drive the fan housing 12 to rotate, so as to be used for upward and downward air supply or left and right air supply of the indoor unit.

[0063] In the present invention Figures 3 to 11 In the three embodiments shown, the first motor shaft 41 of the first motor 4 extends into the fan housing 12 and is directly connected to the blade body 111 of the fan blade 11; wherein, a through hole for the first motor shaft 41 to pass through is provided on the bearing assembly 2 close to the first motor 4 and the housing shaft 122 of the fan housing 12.

[0064] In at least one embodiment of the present invention, the two bearing assemblies 2 include: a bearing seat 20, which is used to be fixed on the body of the indoor unit of the air conditioner; wherein, the housing bearing 22 is arranged on the bearing seat 20, and the bearing seat 20 includes a first mounting section 201 for mounting the housing bearing 22.

[0065] Specifically, at least one of the two bearing assemblies 2 includes: a blade bearing 21, which is used to be mutually sleeved with the blade shaft 112 of the blade 11 to support the blade 11; wherein, the blade bearing 21 is arranged on the bearing seat 20. During the rotation of the fan casing 12, in order to keep the gap between the fan 11 and the fan casing 12 unchanged at all times, so as to ensure that there is no adverse effect on the working performance of the fan and to make the fan structure reliable, the rotation axis of the blade shaft 112, the rotation axis of the casing shaft 122, the rotation axis of the blade bearing 21 and the rotation axis of the casing bearing 22 must be collinear.

[0066] Optionally, the bearing seat 20 is a hollow cylindrical structure; Figures 1 to 5 As shown, the fan blade bearing 21 and the housing bearing 22 are both arranged on the inner side of the bearing seat 20 (that is, the bearing seat 20 is sleeved on the fan blade bearing 21 and the housing bearing 22), the fan blade bearing 21 is sleeved on the fan blade shaft 112, the housing bearing 22 is sleeved on the connecting shaft 6, and the fan blade bearing 21 is located on the side of the housing bearing 22 away from the fan housing 12; or, as Fig.10 As shown, the fan blade bearing 21 is arranged on the inner side of the bearing seat 20 (that is, the bearing seat 20 is sleeved on the fan blade bearing 21), the housing bearing 22 is arranged on the outer side of the bearing seat 20 (that is, the housing bearing 22 is sleeved on the bearing seat 20), and the connecting shaft 6 is sleeved on the housing bearing 22; or, as Fig.11 As shown, the fan blade bearing 21 and the shell bearing 22 are both arranged on the outside of the bearing seat 20 (that is, the fan blade bearing 21 and the shell bearing 22 are both sleeved on the bearing seat 20), the fan blade shaft 112 is sleeved on the fan blade bearing 21, the connecting shaft 6 is sleeved on the shell bearing 22, and the fan blade bearing 21 is located in the shell bearing 22 and is located on the side of the shell bearing 22 close to the fan housing 12.

[0067] Optionally, the first sleeve connection portion 61 and the shell shaft 122 are hollow columnar structures; wherein the first sleeve connection portion 61 is sleeved on the outer circumference of the shell shaft 122; or the shell shaft 122 is sleeved on the outer circumference of the first sleeve connection portion 61.

[0068] When the housing bearing 22 is located on the inner side of the bearing seat 20, the connecting shaft 6 is located on the inner side of the housing bearing 22, and the first stop portion 62 is an annular plate body arranged around the outer peripheral surface of the first sleeve portion 61, that is, the first stop portion 62 protrudes toward the side of the first sleeve portion 61 away from the rotation axis of the housing shaft 122; when the housing bearing 22 is located on the outer side of the bearing seat 20, the connecting shaft 6 is located on the outer side of the housing bearing 22, and the first stop portion 62 is an annular plate body arranged around the inner wall surface of the first sleeve portion 61, that is, the first stop portion 62 protrudes toward the side of the first sleeve portion 61 close to the rotation axis of the housing shaft 122.

[0069] In this embodiment, a bearing sleeve 23 is sandwiched between the fan blade bearing 21 and the bearing seat 20; the bearing seat 20 includes a second mounting section 202 for mounting the bearing sleeve 23, and the second mounting section 202 is provided with a bearing sleeve limiting portion 203 for limiting the axial movement of the bearing sleeve 23; the bearing sleeve 23 is provided with a limiting groove that cooperates with the bearing sleeve limiting portion 203, and the bearing sleeve limiting portion 203 and the limiting groove are used together to limit the bearing sleeve 23.

[0070] One of the implementation schemes of the first embodiment is as follows:

[0071] The fan blade 11 includes a blade body 111 and a fan blade shaft 112 arranged on one side of the blade body 111, so as to be connected to one of the bearing assemblies 2. The fan housing 12 includes a housing body 121 and two housing shafts 122 arranged on opposite sides of the housing body 121, so as to be respectively connected to the two bearing assemblies 2. The two bearing assemblies 2 include a first bearing assembly 2001 and a second bearing assembly 2002.

[0072] like Figures 3 to 7 As shown, the first bearing assembly 2001 includes a bearing seat 20 and a blade bearing 21, a shell bearing 22 and a bearing sleeve 23 arranged in the bearing seat 20, the bearing sleeve 23 is clamped between the blade bearing 21 and the bearing seat 20, the blade bearing 21 is located on the side of the shell bearing 22 away from the shell body 121 of the fan casing 12, and the shell bearing 22 is a hollow cylindrical structure for the blade shaft 112 to pass through; wherein, the blade bearing 21 is connected to the blade shaft 112 of the blade 11 to support the rotation of the blade 11, and the shell bearing 22 is connected to a shell shaft 122 of the fan casing 12 through a connecting shaft 6 to support the rotation of the fan casing 12, and the connecting shaft 6 is provided with a first stop portion 62 for stopping the axial movement of the fan casing 12.

[0073] like Figure 8 and Fig. 9 As shown, the second bearing assembly 2002 only includes a bearing seat 20 and a shell bearing 22 arranged in the bearing seat 20, the first motor 4 is arranged on the side of the fan 1 close to the second bearing assembly 2002 and is located on the side of the second bearing assembly 2002 away from the shell body 121 of the fan housing 12, and the first motor shaft 41 of the first motor 4 passes through the through holes on the bearing seat 20, the shell bearing 22 and the corresponding shell shaft 122 and enters the shell body 121 and is connected to the blade body 111 to drive the fan blade to rotate; the second motor 5 is also located on the side of the fan 1 close to the second bearing assembly 2002 and is connected to the shell shaft 122 thereat through the transmission structure 3 to drive the fan housing 12 to rotate, and the shell bearing 22 is provided with a second stop portion 222 for stopping the axial movement of the fan housing 12.

[0074] The fan blade bearing 21 and the housing bearing 22 are made of lubricating material, or the surfaces of the fan blade bearing 21 and the housing bearing 22 are coated with lubricant.

[0075] In the present invention Figure 12 to Figure 14In the three embodiments shown, at least one of the two bearing assemblies 2 includes: a blade bearing 21, which is used to be mutually sleeved with the blade shaft 112 of the blade 11 to support the blade 11; a housing bearing 22 is used to be fixed on the body of the indoor unit of the air conditioner, and the connecting shaft 6 is rotatably arranged relative to the housing bearing 22. The blade bearing 21 is arranged on the housing bearing 22. During the rotation of the fan housing 12, in order to keep the gap between the blade 11 and the fan housing 12 unchanged at all times, so as to ensure that there is no adverse effect on the working performance of the fan and make the fan structure reliable, the rotation axis of the blade bearing 21, the rotation axis of the blade shaft 112 and the rotation axis of the housing shaft 122 must be collinear.

[0076] In this way, the above-mentioned bearing seat 20 and shell bearing 22 are combined into one part to form the shell bearing 22 of the second embodiment, which can simplify the processing steps of the bearing assembly and improve the production efficiency of the bearing assembly; wherein, the shell bearing 22 and the shell shaft 122 are made of lubricating material, or a lubricant is coated between the shell bearing 22 and the shell shaft 122, so that the shell shaft 122 can be rotatably arranged relative to the shell bearing 22.

[0077] Optionally, the housing bearing 22 is a hollow cylindrical structure; Fig.12 As shown, the fan blade bearing 21 and the connecting shaft 6 are both arranged on the inner side of the housing bearing 22 (that is, the housing bearing 22 is sleeved on the fan blade bearing 21 and the connecting shaft 6), the fan blade bearing 21 is sleeved on the fan blade shaft 112, the connecting shaft 6 is sleeved on the housing shaft 122 or the housing shaft 122 is sleeved on the connecting shaft 6, and the fan blade bearing 21 is located on the side of the connecting shaft 6 away from the fan housing 12; or, as Fig.13 As shown, the fan blade bearing 21 is arranged on the inner side of the housing bearing 22 (that is, the housing bearing 22 is sleeved on the fan blade bearing 21), the fan blade bearing 21 is sleeved on the fan blade shaft 112, the housing shaft 122 is sleeved on the connecting shaft 6, and the housing bearing 22 is also sleeved on the connecting shaft 6; or, as Fig.14 As shown, the fan blade bearing 21 is arranged on the outside of the shell bearing 22 (that is, the shell bearing 22 is sleeved on the fan blade bearing 21), the shell rotating shaft 122 is sleeved on the connecting shaft 6, the connecting shaft 6 is sleeved on the shell bearing 22, and the connection between the connecting shaft 6 and the shell bearing 22 is located on the side of the fan blade bearing 21 away from the fan housing 12.

[0078] Optionally, the first sleeve connection portion 61 and the shell shaft 122 are hollow columnar structures; wherein the first sleeve connection portion 61 is sleeved on the outer circumference of the shell shaft 122; or the shell shaft 122 is sleeved on the outer circumference of the first sleeve connection portion 61.

[0079] When the connecting shaft 6 is located on the inner side of the housing bearing 22, the first stop portion 62 is an annular plate body arranged around the outer peripheral surface of the first sleeve portion 61, that is, the first stop portion 62 protrudes toward the side of the first sleeve portion 61 away from the rotation axis of the housing shaft 122, and an avoidance groove for avoiding the first stop portion 62 is provided on the inner wall surface of the housing bearing 22, and the first stop portion 62 and the avoidance groove cooperate with each other.

[0080] In this embodiment, a bearing sleeve 23 is sandwiched between the fan blade bearing 21 and the housing bearing 22; a bearing sleeve limiting portion 203 for limiting the axial movement of the bearing sleeve 23 is provided on the housing bearing 22; a limiting groove matching the bearing sleeve limiting portion 203 is provided on the bearing sleeve 23, and the bearing sleeve limiting portion 203 and the limiting groove are used together to limit the bearing sleeve 23.

[0081] One implementation of the second embodiment is as follows:

[0082] The fan blade 11 includes a blade body 111 and a fan blade shaft 112 arranged on one side of the blade body 111, so as to be connected to one of the bearing assemblies 2. The fan housing 12 includes a housing body 121 and two housing shafts 122 arranged on opposite sides of the housing body 121, so as to be respectively connected to the two bearing assemblies 2. The two bearing assemblies 2 include a first bearing assembly 2001 and a second bearing assembly 2002.

[0083] like Fig.12 As shown, the first bearing assembly 2001 includes a shell bearing 22 and a blade bearing 21 and a bearing sleeve 23 arranged in the shell bearing 22, the bearing sleeve 23 is clamped between the blade bearing 21 and the bearing seat 20, the blade bearing 21 is located on the side of the first stop portion 62 of the connecting shaft 6 away from the first sleeve portion 61, and the shell bearing 22 is a hollow cylindrical structure for the blade shaft 112 to pass through; wherein, the blade bearing 21 is connected to the blade shaft 112 of the blade 11 to support the rotation of the blade 11, and the shell bearing 22 is connected to a shell shaft 122 of the fan housing 12 through the connecting shaft 6 to support the rotation of the fan housing 12, and the connecting shaft 6 is provided with a first stop portion 32 for stopping the axial movement of the fan housing 12.

[0084] The second bearing assembly 2002 only includes a housing bearing 22, the first motor 4 is arranged on a side of the fan 1 close to the second bearing assembly 2002 and on a side of the second bearing assembly 2002 away from the housing body 121 of the fan housing 12, the first motor shaft 41 of the first motor 4 passes through the housing bearing 22 and the corresponding through hole on the housing shaft 122 and enters the housing body 121 and is connected to the blade body 111 to drive the fan blade to rotate; the second motor 5 is also located on a side of the fan 1 close to the second bearing assembly 2002 and is connected to the housing shaft 122 thereat through the transmission structure 3 to drive the fan housing 12 to rotate, and a second stop portion 222 is provided on the housing bearing 22 for stopping the axial movement of the fan housing 12.

[0085] The fan blade bearing 21 and the housing bearing 22 are made of lubricating material, or the surfaces of the fan blade bearing 21 and the housing bearing 22 are coated with lubricant.

[0086] The air duct rotating mechanism of the present invention comprises a transmission structure 3 for transmission connection with the fan housing 12; along the axial direction of the fan 1, the axial distance between the housing bearing 22 and the bearing sleeve 23 is L4; the axial length of the first stopper 62 is L5; the axial separation dimension of the transmission structure 3 is L 3 ; The allowable axial movement size of the fan housing 12 is μ; where μ = L4-L5, 0 < μ < L 3 .

[0087] Preferably, 0<μ<1 / 3L 3 .

[0088] Specifically, when the transmission structure 3 is a gear assembly, the axial disengagement dimension of the transmission structure 3 refers to the meshing tooth width between two meshing gears. When the axial movement dimension of the fan housing 12 is greater than or equal to the meshing tooth width, the two meshing gears will be completely separated and unable to transmit power; when the transmission structure 3 is a crank rocker assembly, the axial disengagement dimension of the transmission structure 3 refers to the length of the connecting piece between two interconnected parts. When the axial movement dimension of the fan housing 12 is greater than or equal to the length of the connecting piece, the two interconnected parts will be completely separated and unable to transmit power.

[0089] The allowable axial movement dimension μ of the fan housing 12 refers to a value that will not cause an adverse effect on the rotation of the fan housing 12 when the axial movement dimension of the fan housing 12 is less than or equal to μ.

[0090] In the embodiment of the present invention, the diameter of the fan blade shaft 112 of the fan blade 11 is D 1 , the inner diameter of the housing bearing 22 is D 2 , where D 2 >D 1 .

[0091] Preferably, 7D 1 ≥D 2 >D 1 .

[0092] The present invention provides an indoor unit, comprising an air duct rotating mechanism, and the air duct rotating mechanism is the above-mentioned air duct rotating mechanism.

[0093] The present invention also provides an air conditioner, comprising an indoor unit, wherein the indoor unit is the indoor unit described above.

[0094] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0095] The air duct rotating mechanism of the present invention comprises a fan 1, two bearing assemblies 2 and a connecting shaft 6. The fan 1 comprises a fan blade 11 and a fan housing 12. The fan blade 11 and the fan housing 12 can rotate independently of each other, so that the fan housing 12 replaces the air guide plate of the indoor unit of the air conditioner in the prior art to realize the upward and downward air supply of the indoor unit of the wall-mounted air conditioner or the left and right air supply of the indoor unit of the cabinet air conditioner, thereby increasing the air flow and wind sweeping angle of the indoor unit, improving the overall performance of the air conditioner, and meeting the comfort requirements of the user; the two bearing assemblies 2 are arranged along the The axial direction of the fan 1 is respectively arranged on opposite sides of the fan 1 and fixed on the body of the indoor unit of the air conditioner. The two bearing assemblies 2 each include a housing bearing 22 for connecting with the fan housing 12 to support it. The connecting shaft 6 is used to connect the housing bearing 22 with the housing rotating shaft 122; the first stopper 62 is used to stop the axial movement of the fan housing 12; wherein the first stopper 62 is arranged on the connecting shaft 6 to contact with the housing bearing 22; or the first stopper 62 is arranged on the housing bearing 22 to contact with the connecting shaft 6. In this way, the influence of the axial movement of the fan housing 12 during the rotation process on the fan performance is reduced, thereby ensuring the stability and reliability of the air duct rotation mechanism, and solving the problem of axial movement of the fan housing of the air conditioner in the prior art.

[0096] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0097] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0098] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0099] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0100] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air duct rotating mechanism, It is characterized in that include: A fan (1), the fan (1) comprising a fan blade (11) and a fan housing (12), the fan blade (11) and the fan housing (12) both being rotatably arranged to supply air and change an air outlet angle; Two bearing assemblies (2) are respectively arranged on opposite sides of the fan (1) along the axial direction of the fan (1) and fixed on the body of the indoor unit of the air conditioner, and the two bearing assemblies (2) each include a housing bearing (22) for connecting to a housing rotating shaft (122) of the fan housing (12) to support it; A connecting shaft (6) for connecting the housing bearing (22) to the housing rotating shaft (122); A first stopper (62) is used to stop the axial movement of the fan housing (12); The first stopper (62) is arranged on the connecting shaft (6) for contacting the housing bearing (22); or the first stopper (62) is arranged on the housing bearing (22) for contacting the connecting shaft (6).

2. The air duct rotating mechanism according to claim 1, It is characterized in that The first stop portion (62) is arranged on the connecting shaft (6), and the connecting shaft (6) also includes a first sleeve portion (61) for sleeve-engaging with the housing bearing (22), and the first stop portion (62) is located on a side of the first sleeve portion (61) away from the fan housing (12) so as to contact the housing bearing (22).

3. The air duct rotating mechanism according to claim 1, It is characterized in that The number of the connecting shaft (6) is one, and the connecting shaft (6) is connected to the housing bearing (22) of one of the two bearing assemblies (2); in the other of the two bearing assemblies (2), the housing bearing (22) comprises a second sleeve portion (221) for sleeve-engaging with the housing rotating shaft (122) and a second stop portion (222) located on a side of the housing bearing (22) away from the fan housing (12); or The number of the connecting shafts (6) is two, and the two connecting shafts (6) are arranged in one-to-one correspondence with the two bearing assemblies (2), and each connecting shaft (6) is used to connect to the housing bearing (22) of the corresponding bearing assembly (2).

4. The air duct rotating mechanism according to any one of claims 1 to 3, It is characterized in that The connecting shaft (6) and the housing rotating shaft (122) are integrally formed or detachably connected.

5. The air duct rotating mechanism according to any one of claims 1 to 3, It is characterized in that The connecting shaft (6) and the housing rotating shaft (122) are connected via a fastener (7); one of the connecting shaft (6) and the housing rotating shaft (122) is provided with a through hole for the fastener (7) to pass through; the other of the connecting shaft (6) and the housing rotating shaft (122) is provided with a fastening hole for the fastener (7) to be inserted into; one end of the fastener (7) passes through the through hole and is then inserted into the fastening hole.

6. The air duct rotating mechanism according to claim 2, It is characterized in that The air duct rotating mechanism comprises a transmission structure (3) for transmission connection with the fan housing (12); along the axial direction of the fan (1), The axial length of the mounting shaft section of the first sleeve connection portion (61) located between the first stop portion (62) and the housing rotating shaft (122) for mounting the housing bearing (22) is L. 1 ; The axial length of the housing bearing (22) is L 2 ; The axial separation dimension of the transmission structure (3) is L 3 ; The allowable axial movement dimension of the fan housing (12) is μ; where μ = L 1 -L 2 , 0 < μ < L 3 .

7. The air duct rotating mechanism according to claim 6, It is characterized in that 0<μ<1 / 3L 3 。 8. The air duct rotating mechanism according to claim 2, It is characterized in that The two bearing assemblies (2) each comprise: A bearing seat (20) is used to be fixed on the body of the indoor unit of the air conditioner; The housing bearing (22) is arranged on the bearing seat (20), and the bearing seat (20) comprises a first mounting section (201) for mounting the housing bearing (22).

9. The air duct rotating mechanism according to claim 8, It is characterized in that At least one of the two bearing assemblies (2) comprises: A fan blade bearing (21) is used to be sleeved with a fan blade rotating shaft (112) of the fan blade (11) to support the fan blade (11); The fan blade bearing (21) is arranged on the bearing seat (20), and the rotation axis of the fan blade shaft (112), the rotation axis of the housing shaft (122), the rotation axis of the fan blade bearing (21) and the rotation axis of the housing bearing (22) are collinear.

10. The air duct rotating mechanism according to claim 2, It is characterized in that At least one of the two bearing assemblies (2) comprises: A fan blade bearing (21) is used to be sleeved with a fan blade rotating shaft (112) of the fan blade (11) to support the fan blade (11); The housing bearing (22) is used to be fixed on the body of the indoor unit of the air conditioner, the connecting shaft (6) is rotatably arranged relative to the housing bearing (22), the fan blade bearing (21) is arranged on the housing bearing (22), and the rotation axis of the fan blade bearing (21), the rotation axis of the fan blade rotating shaft (112) and the rotation axis of the housing rotating shaft (122) are collinear.

11. The air duct rotating mechanism according to claim 9, It is characterized in that The housing bearing (22) is a hollow columnar structure; wherein: The fan blade bearing (21) and the housing bearing (22) are both arranged on the inner side of the bearing seat (20), and the fan blade bearing (21) is located on a side of the housing bearing (22) away from the fan housing (12); or The fan blade bearing (21) is arranged on the inner side of the bearing seat (20), and the housing bearing (22) is arranged on the outer side of the bearing seat (20); or The fan blade bearing (21) and the housing bearing (22) are both arranged on the outside of the bearing seat (20), and the fan blade bearing (21) is located on a side of the housing bearing (22) close to the fan housing (12).

12. The air duct rotating mechanism according to claim 9, It is characterized in that The first sleeve connection portion (61) and the housing shaft (122) are hollow columnar structures; wherein: The housing bearing (22) is located on the inner side of the bearing seat (20), and the first stopper (62) is an annular plate body arranged around the outer peripheral surface of the first sleeve connection portion (61); or The housing bearing (22) is located outside the bearing seat (20), and the first stopper (62) is an annular plate body arranged around the inner wall surface of the first sleeve connection portion (61).

13. The air duct rotating mechanism according to claim 10, It is characterized in that The first sleeve connection portion (61) and the shell rotating shaft (122) are hollow columnar structures; wherein the first sleeve connection portion (61) is sleeved on the outer peripheral surface of the shell rotating shaft (122); or the shell rotating shaft (122) is sleeved on the outer peripheral surface of the first sleeve connection portion (61).

14. The air duct rotating mechanism according to claim 9, It is characterized in that The outer cover of the fan blade bearing (21) is provided with a bearing sleeve (23); The bearing seat (20) comprises a second mounting section (202) for mounting the bearing sleeve (23); the second mounting section (202) is provided with a bearing sleeve limiting portion (203) for limiting the axial movement of the bearing sleeve (23); The bearing sleeve (23) is provided with a limiting groove that matches the bearing sleeve limiting portion (203); the bearing sleeve limiting portion (203) and the limiting groove are used together to limit the bearing sleeve (23).

15. The air duct rotating mechanism according to claim 14, It is characterized in that The air duct rotating mechanism comprises a transmission structure (3) for transmission connection with the fan housing (12); along the axial direction of the fan (1), The axial distance between the housing bearing (22) and the bearing sleeve (23) is L4; The axial length of the first stopper (62) is L5; The axial separation dimension of the transmission structure (3) is L 3 ; The allowable axial movement dimension of the fan housing (12) is μ; Where, μ=L4-L5, 0<μ<L 3 。 16. The air duct rotating mechanism according to claim 15, It is characterized in that 0<μ<1 / 3L 3 。 17. The air duct rotating mechanism according to claim 1, It is characterized in that The air duct rotating mechanism also includes: a first motor (4), the first motor (4) being arranged at one end of one of the bearing assemblies (2) away from the fan (1), and being used for being drivingly connected to the fan blade (11) to drive the fan blade (11) to rotate; and / or A second motor (5), the second motor (5) is drivingly connected to the fan housing (12) via a transmission structure (3) to drive the fan housing (12) to rotate.

18. The air duct rotating mechanism according to claim 17, It is characterized in that The first motor shaft (41) of the first motor (4) extends into the fan housing (12) and is directly connected to the blade body (111) of the fan blade (11); Wherein, the bearing assembly (2) close to the first motor (4) and the housing shaft (122) of the fan housing (12) are both provided with through holes for allowing the first motor shaft (41) to pass through.

19. The air duct rotating mechanism according to claim 9 or 13, It is characterized in that The diameter of the fan blade rotating shaft (112) of the fan blade (11) is D 1 The inner diameter of the housing bearing (22) is D 2 , where D 2 >D 1 .

20. The air duct rotating mechanism according to claim 19, It is characterized in that <h2 style=";text-align:left;direction:ltr">7D<h2 style=";text-align:left;direction:ltr"> 1 <h2 style=";text-align:left;direction:ltr"> ≥D<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> >D<h2 style=";text-align:left;direction:ltr"> 1 <h2 style=";text-align:left;direction:ltr"> 。 21. An indoor unit, comprising an air duct rotating mechanism, It is characterized in that The air duct rotating mechanism is the air duct rotating mechanism according to any one of claims 1 to 20.

22. An air conditioner comprising an indoor unit, It is characterized in that The indoor unit is the indoor unit according to claim 21.

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