Outer rotor cross-flow wind wheel with damping structure

Abstract

The utility model relates to the technical field of cross-flow wind wheels, in particular to an outer rotor cross-flow wind wheel with a damping structure, which comprises a wind wheel fan blade, a connecting part and a damping part, the connecting part is arranged on one side of the wind wheel fan blade and is connected with the damping part, and the damping part is arranged on the other side of the wind wheel fan blade. The damping part extends and is embedded in the inner wall of the connecting part and is used for connecting the motor rotor with the connecting part; the damping part comprises an abutting part and an extending part, the abutting part is arranged on the side wall of the connecting part and abuts against the side wall of the motor rotor, and the extending part penetrates into the connecting part and the motor rotor and positions and supports the abutting part. According to the cross-flow wind wheel, the operation noise after the cross-flow wind wheel is assembled with the outer rotor motor can be effectively reduced, and meanwhile application and popularization of the outer rotor motor in production and assembly of the cross-flow wind wheel are facilitated.

Description

Technical Field

[0001] This application relates to the technical field of cross-flow fans, and particularly to an external-rotor cross-flow fan with a shock-absorbing structure. Background Art

[0002] A cross-flow fan, also known as a cross-flow blower or transverse-flow fan, is a ventilation device with a multi-bladed, long cylindrical impeller. It mainly consists of an impeller, a duct, and a motor, and can effectively promote air circulation and maintain the freshness, appropriate temperature, and humidity of indoor air. It is now widely used in ventilation systems, refrigeration systems, and air circulation systems.

[0003] Currently, the motors used in cross-flow fans are generally divided into internal-rotor motors and external-rotor motors. To reduce the operating noise of cross-flow separation, rubber parts are generally installed at the connection between the internal-rotor motor and the impeller for shock absorption. When using an external-rotor motor to connect to the impeller, the installation of rubber parts at the connection between the two will cause rotor skew and edge scraping, and increase the operating noise of the cross-flow fan, making it difficult for the relatively small external-rotor motor to be widely used in the production and assembly of cross-flow fans. Utility Model Content

[0004] In order to effectively reduce the operating noise of a cross-flow fan after assembling an external-rotor motor and facilitate the popularization and application of the external-rotor motor in the production and assembly of cross-flow fans, this application provides an external-rotor cross-flow fan with a shock-absorbing structure.

[0005] The external-rotor cross-flow fan with a shock-absorbing structure provided by this application adopts the following technical solutions:

[0006] An external-rotor cross-flow fan with a shock-absorbing structure includes: an impeller blade, a connecting part, and a shock-absorbing part. The connecting part is arranged on one side of the impeller blade and is connected to the shock-absorbing part. The shock-absorbing part extends and is embedded in the inner wall of the connecting part and is used to connect the motor rotor to the connecting part.

[0007] The shock-absorbing part includes: a contact part and an extension part. The contact part is arranged on the side wall of the connecting part and abuts against the side wall of the motor rotor. The extension part penetrates into the connecting part and the motor rotor and positions and supports the contact part.

[0008] By adopting the above technical solutions, the connecting part can connect the impeller blade to the motor rotor of the external-rotor motor, and the shock-absorbing parts arranged between the connecting part and the motor rotor can reduce the hard connection between the motor rotor and the impeller blade, thereby effectively reducing the direct transmission of vibration between the motor rotor and the impeller blade.

[0009] In addition, compared with the existing external rotor cross-flow impeller, in the present application, a contact member is abutted between the connecting portion and the motor rotor, and both sides of the contact member are inserted into the inner sides of the connecting portion and the motor rotor through the extending members, which can effectively reduce the shaking of the motor rotor during operation. Furthermore, while reducing the vibration transmission between the motor rotor and the connecting portion, the running stability of the motor rotor can be better improved, achieving the purpose of reducing the running noise of the external rotor cross-flow impeller.

[0010] Optionally, the connecting portion includes: a supporting member and a linkage member. The supporting member is disposed on one side of the impeller blades and is connected to the contact member through the extending member. The linkage member is disposed through the inner wall of the supporting member and is used to connect to the motor shaft.

[0011] By adopting the above technical solution, the supporting member can support and position the contact member through the connection with the extending member. At the same time, it is connected to the motor shaft through the linkage member, facilitating the positioning and installation of the external rotor motor on one side of the impeller blades, thereby improving the running stability of the external rotor motor.

[0012] Optionally, the connecting portion further includes: a fitting. The fitting is disposed on the side wall of the motor rotor and is connected to the contact member through the extending member.

[0013] By adopting the above technical solution, the fitting can be connected to the side wall of the motor rotor, enabling the extending member on one side of the contact member to be connected to the motor rotor by passing through and fitting inside the fitting, thereby better improving the connection stability between the motor rotor and the contact member, achieving the purpose of further improving the running smoothness of the external rotor motor.

[0014] Optionally, a plurality of extending members are provided, and all the plurality of extending members penetrate into the interiors of the supporting member and the fitting.

[0015] By adopting the above technical solution, the plurality of provided extending members can better enhance the connection area among the contact member, the supporting member, and the fitting, thereby effectively improving the connection stability between the impeller blades and the motor rotor, achieving the improvement of the transmission efficiency of the motor rotor while better reducing the noise generated by the vibration during the operation of the motor rotor.

[0016] Optionally, the shock-absorbing portion further includes: a first positioning member. The first positioning member is disposed on the side wall of the extending member and abuts against the inner walls of the supporting member and the fitting.

[0017] By adopting the above technical solution, the first positioning member can better increase the connection area between the extending member and the supporting member and the fitting, which is beneficial to enhancing the connection strength of the contact member inside the supporting member and the fitting, and further effectively enhancing the shock-absorbing effect of the shock-absorbing member in the present application between the motor rotor and the impeller blades.

[0018] Optionally, the shock absorbing part further includes: a second positioning member, which is arranged at the end of the extending member and abuts against a side of the supporting member close to the wind wheel blades.

[0019] By adopting the above technical solution, the second positioning member can enhance the clamping effect of the abutment member on the other side of the supporting member by abutting against the side of the supporting member close to the wind wheel blades, so that the abutment member can simultaneously clamp and dampen both sides of the supporting member, further enhancing the shock-absorbing and noise-reducing effect between the motor rotor and the wind wheel blades.

[0020] Optionally, an output member connected to the linkage member is disposed inside the support member, and a plurality of output members are disposed at positions corresponding to the extension member, and the plurality of output members are respectively connected to the extension members at corresponding positions.

[0021] By adopting the above technical solution, the guide piece can disperse the vibration generated during the operation of the motor shaft and guide it to the extension piece through the connection between the extension piece and the motor shaft, thereby better enhancing the shock-absorbing effect of the shock-absorbing part of the present application on the outer rotor motor installed on one side of the cross-flow impeller, and further effectively reducing the noise generated by the outer rotor motor when operating on one side of the cross-flow impeller.

[0022] Optionally, a mounting member is provided on the side wall of the support member, and the mounting member corresponds to the position of the outlet member and is respectively connected to the outlet member and the motor shaft.

[0023] By adopting the above technical solution, the mounting part facilitates the connection setting of the outlet part inside the supporting part. At the same time, the mounting part is respectively connected with the outlet part and the motor shaft, which can effectively reduce the vibration transmitted to the supporting part by the motor shaft, thereby achieving the purpose of reducing the operating noise of the outer rotor crossflow impeller.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The connecting part can connect the wind wheel blades with the motor rotor of the outer rotor motor, and reduce the rigid connection between the motor rotor and the wind wheel blades by setting a shock-absorbing member between the connecting part and the motor rotor, thereby effectively reducing the direct transmission of vibration between the motor rotor and the wind wheel blades; in addition, compared with the existing outer rotor crossflow wind wheel, the present application can effectively reduce the shaking of the motor rotor during operation by abutting the connecting part and the motor rotor with abutting members, and making the two sides of the abutting members penetrate and embed into the inner side of the connecting part and the motor rotor through the extension members, thereby reducing the vibration transmission between the motor rotor and the connecting part, and better improving the running stability of the motor rotor, so as to achieve the purpose of reducing the running noise of the outer rotor crossflow wind wheel;

[0026] 2. By setting the support member, the abutting member can be supported and positioned through connection with the extension member. At the same time, it is connected to the motor rotating shaft through the linkage member, so as to facilitate the positioning and installation of the outer rotor motor on one side of the wind turbine blade, thereby improving the running stability of the outer rotor motor.

[0027] 3. By setting the first positioning member, the connection area between the extension member, the support member and the fitting can be better improved, which is beneficial to enhancing the connection strength of the abutting member inside the support member and the fitting, and further effectively enhancing the damping effect of the damping member of the present application between the motor rotor and the wind turbine blade.

[0028] 4. By setting the export member, it can be connected to both the extension member and the motor rotating shaft at the same time, which is beneficial to dispersing and exporting the vibration generated during the operation of the motor rotating shaft to the extension member, so as to better improve the damping effect of the damping part of the present application on the outer rotor motor assembled on one side of the cross-flow wind turbine, and further effectively reduce the noise generated during the operation of the outer rotor motor on one side of the cross-flow wind turbine. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the outer rotor cross-flow wind turbine in the first embodiment of the present application;

[0030] Figure 2 is a schematic cross-sectional view of a part of the structure of the outer rotor cross-flow wind turbine in the first embodiment of the present application;

[0031] Figure 3 is a schematic cross-sectional view of the outer rotor motor, the damping part and the connecting part in the first embodiment of the present application;

[0032] Figure 4 is a schematic structural diagram of the support member, the fitting and the linkage member in the first embodiment of the present application;

[0033] Figure 5 is a schematic structural diagram of the outer rotor motor, the damping part and the connecting part in the second embodiment of the present application;

[0034] Figure 6 is a schematic cross-sectional view of the outer rotor motor, the damping part and the connecting part in the second embodiment of the present application;

[0035] Figure 7 is a schematic internal structure diagram of the support member in the second embodiment of the present application;

[0036] Figure 8 is Figure 7 the enlarged view of part A in

[0037] Figure 9 is a schematic structural diagram of the export member and the mounting member in the second embodiment of the present application;

[0038] Figure 10 It is an exploded structural schematic diagram of the export part and the installation part in the second embodiment of the present application.

[0039] Description of reference numerals: 1, wind turbine blade; 2, connecting part; 21, support member; 211, coupling hole; 212, fitting hole; 213, export hole; 214, relief groove; 215, arc-shaped rib; 22, linkage member; 23, fitting part; 24, export part; 241, connecting bar; 242, top support block; 243, arc-shaped mating groove; 244, spring; 245, ejecting block; 245a, second inclined surface; 25, installation part; 251, limiting bar; 251a, locking block; 251b, locking screw; 252, abutting bar; 253, sliding groove; 254, guiding groove; 255, slider; 255a, first inclined surface; 256, receiving groove; 257, accommodating groove; 258, ball; 259, groove; 3, damping part; 31, abutting member; 32, extension member; 33, first positioning member; 34, second positioning member; 35, connecting member; 4, motor rotor; 5, motor shaft. Detailed implementation manners

[0040] The following will Figures 1-10 make a further detailed description of the present application.

[0041] Embodiment 1

[0042] The embodiment of the present application discloses an external rotor cross-flow wind turbine with a damping structure. Refer to Figures 1-2 , the external rotor cross-flow wind turbine includes a wind turbine blade 1, a connecting part 2 and a damping part 3. Among them, the connecting part 2 is arranged on one side of the wind turbine blade 1, and the damping part 3 is arranged on the other side of the connecting part 2 and is used to connect with the motor rotor 4 of the external rotor motor.

[0043] At the same time, a fitting part 23 is arranged on one side of the external rotor motor close to the output end of the motor shaft 5. The inner wall of one side of the fitting part 23 is connected to the outer wall of the motor rotor 4, and the other side of the fitting part 23 abuts against the side wall of the damping part 3. In this embodiment, the fitting part 23 can be selected as an inner flange, and in another embodiment, the fitting part 23 can be selected as an outer flange.

[0044] Refer to Figures 2-4 , in this embodiment, the connecting part 2 includes a support member 21 and a linkage member 22. Among them, the support member 21 is arranged on the side wall of the wind turbine blade 1 and is connected to the damping part 3. At the same time, a coupling hole 211 is opened at the center of the support member 21, and the linkage member 22 is arranged on the side of the support member 21 close to the external rotor motor and extends into the inside of the coupling hole 211. In this embodiment, the support member 21 can be selected as a plastic material, and in another embodiment, the support member 21 can be selected as a metal material.

[0045] In addition, in this embodiment, the shock-absorbing portion 3 includes an abutting member 31 and an extension member 32. Among them, a plurality of fitting holes 212 are uniformly formed on the surface of the support member 21. The abutting member 31 is arranged on one side of the support member 21 close to the outer rotor motor, and a plurality of extension members 32 are provided and are uniformly distributed on both sides of the abutting member 31. At the same time, the extension members 32 located on both sides of the abutting member 31 respectively penetrate and are embedded into the fitting holes 212 and the flange holes of the fitting member 23.

[0046] In addition, with reference to Figures 2-4 , in order to better improve the connection stability between the shock-absorbing portion 3 and the fitting member 23, a plurality of arc-shaped strip holes arranged in a circumferential array are provided on the inner wall of the fitting member 23, and the plurality of arc-shaped strip holes are all communicated with the flange center hole of the fitting member 23. At the same time, a plurality of connecting members 35 respectively penetrating and embedded into the corresponding arc-shaped strip holes are arranged on the side wall of the abutting member 31. In this embodiment, the abutting member 31, the extension member 32 and the connecting member 35 are all made of rubber.

[0047] Working principle: The outer rotor motor is installed on one side of the wind turbine blade 1, and the motor shaft 5 is correspondingly inserted into the coupling hole 211 at the center of the support member 21 and is rotatably connected to the linkage member 22. Then, an abutting member 31 is integrally injection-molded between the support member 21 and the fitting member 23, so that the extension members 32 on both sides of the abutting member 31 respectively penetrate and are embedded into the fitting holes 212 and the flange holes of the fitting member 23, and at the same time, a plurality of connecting members 35 respectively penetrate and are embedded in the corresponding arc-shaped strip holes, thereby injection-molding and connecting the motor rotor 4 to one side of the wind turbine blade 1 by means of integrally injection-molding rubber.

[0048] Embodiment Two

[0049] The difference between Embodiment Two and Embodiment One is that, with reference to Figures 5-7 , in this embodiment, the shock-absorbing portion 3 further includes a first positioning member 33 and a second positioning member 34. Among them, two relief grooves 214 are symmetrically formed on the inner walls of the support member 21 and the fitting member 23 corresponding to the positions of the extension members 32, and both ends of each relief groove 214 are through settings. At the same time, two first positioning members 33 are provided, and the two first positioning members 33 are respectively arranged on both sides of the extension member 32 and are embedded in the relief grooves 214 at the corresponding positions of the support member 21 and the fitting member 23. In addition, a plurality of arc-shaped convex strips 215 are arranged in a ring shape on the inner wall of each fitting hole 212 and near the edge on the side of the wind turbine blade 1, and the second positioning member 34 is arranged on the side of the arc-shaped convex strip 215 close to the wind turbine blade 1 and is connected to the end of the corresponding extension member 32. And in this embodiment, the first positioning member 33 and the second positioning member 34 can both be made of rubber.

[0050] With reference to Figures 6-8, in order to further enhance the shock absorption effect of the shock absorption part 3, a lead-out part 24 is provided inside the support part 21 and at the position corresponding to each extension part 32. At the same time, both ends of the lead-out part 24 are respectively communicated with the fitting hole 212 and the coupling hole 211.

[0051] Refer to Figures 8-10 , in this embodiment, the lead-out part 24 includes a connecting strip 241 and a supporting block 242. Among them, a lead-out hole 213 is opened inside the support part 21. Both ends of the lead-out hole 213 are respectively communicated with the fitting hole 212 and the coupling hole 211, and the side of the lead-out hole 213 away from the wind turbine blade 1 is provided with a through hole. At the same time, the connecting strip 241 is slidably arranged inside the lead-out hole 213, and one end of the connecting strip 241 is set as a semi-circular head and abuts against the motor rotating shaft 5. In addition, an arc-shaped fitting groove 243 is opened at the other end of the connecting strip 241, and a spring 244 is arranged in the arc-shaped fitting groove 243, while the supporting block 242 is slidably arranged in the arc-shaped fitting groove 243 and is connected to the other end of the spring 244.

[0052] Refer to Figure 7 and 8 -10, in order to improve the stability of the connecting strip 241 inside the lead-out hole 213, a mounting part 25 is fitted and arranged on the side of the lead-out hole 213 close to the outer rotor motor. And in this embodiment, the mounting part 25 includes a limiting strip 251 and a pressing strip 252. Among them, the limiting strip 251 is slidably inserted into the inside of the lead-out hole 213 and abuts against the side wall of the connecting strip 241. At the same time, a sliding groove 253 is opened on the side of the limiting strip 251 away from the connecting strip 241, and guiding grooves 254 perpendicular to the length direction of the limiting strip 251 are opened on both side walls of the sliding groove 253. In addition, a slider 255 is arranged in the sliding groove 253, and both sides of the slider 255 are respectively slidably connected with the two guiding grooves 254 in the sliding groove 253. In addition, a receiving groove 256 is opened on the side of the limiting strip 251 corresponding to the sliding groove 253 close to the coupling hole 211, and one end of the pressing strip 252 is hinged in a receiving groove 257 opened at the bottom of the slider 255 and is fitted with the receiving groove 256, and the end of the pressing strip 252 away from the slider 255 is set as an arc surface, and a plurality of balls 258 are arranged on the arc surface end of the pressing strip 252 to abut against the outer wall of the motor rotating shaft 5.

[0053] At the same time, a first inclined surface 255a is arranged at the bottom of the slider 255 on the side close to the connecting strip 241, and a jacking block 245 is arranged on the side wall of the connecting strip 241. The top surface of the jacking block 245 away from the connecting strip 241 is provided with a second inclined surface 245a that fits with the first inclined surface 255a on one side of the slider 255. In addition, in order to facilitate the movement of the locking block 251a in the sliding groove 253, a groove 259 is opened on the bottom surface of the sliding groove 253 on the side close to the connecting strip 241.

[0054] In addition, referring to Figure 6 and 9 -10, in order to achieve the positioning of the limiting strip 251, a locking block 251a is provided on one side of the limiting strip 251, and a locking screw 251b is penetrated through the locking block 251a. At the same time, a locking groove into which the locking block 251a is fitted is formed on the side of the support member 21 close to the outer rotor motor. Therefore, after the locking block 251a is embedded in the locking groove, the limiting strip 251 can be positioned and installed in the lead-out hole 213 by the threaded fit of the locking screw 251b with the locking groove.

[0055] Working principle: First, the connecting strip 241 and the top support block 242 are integrally slid into the lead-out hole 213, so that while the top support block 242 approaches the hole wall of the fitting hole 212, the other end of the connecting strip 241 extends into the coupling hole 211. Then, the limiting strip 251 is slid into the lead-out hole 213, and the position of the limiting strip 251 is limited by the threaded fit of the locking screw 251b with the locking groove. Then, the motor shaft 5 is assembled in the coupling hole 211. At this time, the connecting strip 241 will be pushed out by the motor shaft 5 and the top support block 242 will be flush with the hole wall of the fitting hole 212. At the same time, the end of the pressing strip 252 away from the slider 255 will abut against the outer wall of the motor shaft 5 through a plurality of balls 258 arranged on the arc surface. Finally, the fitting 23 and the support member 21 are integrally injection-molded, so that the first positioning member 33 and the second positioning member 34 are respectively formed on the side wall and the end of the extension member 32, thereby effectively improving the damping effect between the fitting 23 and the support member 21 and achieving the purpose of reducing the operating noise of the existing cross-flow fan wheel.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An outer rotor crossflow wind wheel with a shock absorbing structure, characterized in that: include: A wind wheel blade (1), a connecting portion (2) and a shock absorbing portion (3), wherein the connecting portion (2) is arranged on one side of the wind wheel blade (1) and is connected to the shock absorbing portion (3), and the shock absorbing portion (3) extends and is embedded in the inner wall of the connecting portion (2) and is used to connect the motor rotor (4) to the connecting portion (2); The shock absorbing part (3) comprises: an abutment member (31) and an extension member (32); the abutment member (31) is arranged on a side wall of the connecting part (2) and abuts against a side wall of the motor rotor (4); the extension member (32) penetrates into the interior of the connecting part (2) and the motor rotor (4) and positions and supports the abutment member (31).

2. The outer rotor crossflow impeller with a shock absorbing structure according to claim 1, characterized in that: The connecting portion (2) comprises: a supporting member (21) and a linkage member (22); the supporting member (21) is arranged on one side of the wind wheel blade (1) and is connected to the abutment member (31) via an extension member (32); the linkage member (22) is arranged through the inner wall of the supporting member (21) and is used to be connected to the motor shaft (5).

3. The outer rotor crossflow impeller with a shock absorbing structure according to claim 2, characterized in that: The connecting portion (2) further comprises: an assembly part (23), wherein the assembly part (23) is arranged on the side wall of the motor rotor (4) and is connected to the abutment part (31) via an extension part (32).

4. The outer rotor crossflow impeller with a shock absorbing structure according to claim 3, characterized in that: A plurality of the extension pieces (32) are provided, and the plurality of the extension pieces (32) all penetrate into the interior of the support piece (21) and the assembly piece (23).

5. The outer rotor crossflow impeller with a shock absorbing structure according to claim 3, characterized in that: The shock absorbing part (3) further comprises: a first positioning member (33), wherein the first positioning member (33) is arranged on a side wall of the extension member (32) and abuts against inner walls of the support member (21) and the assembly member (23).

6. The outer rotor crossflow impeller with a shock absorbing structure according to claim 5, characterized in that: The shock absorbing part (3) further comprises: a second positioning member (34), the second positioning member (34) being arranged at an end of the extending member (32) and abutting against a side of the supporting member (21) close to the wind wheel blade (1).

7. The outer rotor crossflow impeller with a shock absorbing structure according to claim 6, characterized in that: An output member (24) connected to the linkage member (22) is arranged inside the support member (21), and a plurality of output members (24) are arranged at positions corresponding to the extension member (32), and the plurality of output members (24) are respectively connected to the extension members (32) at corresponding positions.

8. The outer rotor crossflow impeller with a shock absorbing structure according to claim 7, characterized in that: A mounting member (25) is provided on the side wall of the support member (21); the mounting member (25) corresponds to the position of the outlet member (24) and is respectively connected to the outlet member (24) and the motor shaft (5).

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