Centrifugal fan blades, fans and air conditioners

Abstract

The present invention provides a centrifugal fan blade, a fan and an air conditioner. The centrifugal fan blade includes a base plate and blades arranged on the base plate. A hub portion is formed in the middle of the base plate. An inner rotor motor mounting structure is arranged at the center of the hub portion. An outer rotor motor mounting structure is formed on the hub portion around the inner rotor motor mounting structure. The hub portion can be selectively connected to the inner rotor motor through the inner rotor motor mounting structure or connected to the outer rotor motor through the outer rotor motor mounting structure. When the design of the inner rotor motor is adopted, the inner rotor motor mounting structure on the hub portion is connected to the inner rotor motor; when the design of the outer rotor motor is adopted, the rotor motor mounting structure on the hub portion is connected to the outer rotor motor. In this way, the compatibility of the centrifugal fan blade is improved, so that the centrifugal fan blade of the present invention can be applied to both inner rotor motors and outer rotor motors.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a centrifugal fan blade, a fan and an air conditioner. Background Art

[0002] In the existing technology, most of the blades used in the overhead cranes are matched with inner rotor motors. With the innovation of technology, the technical solution of centrifugal fan blades of overhead cranes matched with outer rotor motors has also appeared on the market. Because there are differences in the connection and fixing methods of the inner and outer rotor structures and blades, the blades matched with the two motors are generally not interchangeable.

[0003] In the process of developing new products, there is often the problem of assembling different motors in the same housing, including inner rotor motors and outer rotor motors. Under existing conditions, the blades that match the two are not universal. Summary of the invention

[0004] The embodiments of the present invention provide a centrifugal fan blade, a fan and an air conditioner to solve the technical problem in the prior art that the blades of inner rotor motors and outer rotor motors are not interchangeable.

[0005] An embodiment of the present invention provides a centrifugal fan blade, including a base plate and blades arranged on the base plate, a hub portion is formed in the middle of the base plate, an inner rotor motor mounting structure is arranged at the center of the hub portion, an outer rotor motor mounting structure is formed on the hub portion around the inner rotor motor mounting structure, and the hub portion can be selectively connected to the inner rotor motor through the inner rotor motor mounting structure or connected to the outer rotor motor through the outer rotor motor mounting structure.

[0006] In one embodiment, the inner rotor motor mounting structure includes: a sleeve mounting portion connected to the center of the hub portion; a sleeve detachably mounted in the sleeve mounting portion, the sleeve being used to be connected to the rotating shaft of the inner rotor motor, and when the hub portion is connected to the outer rotor motor through the outer rotor motor mounting structure, the sleeve can be selectively mounted in the sleeve mounting portion.

[0007] In one embodiment, the inner rotor motor mounting structure includes a centrifugal fan blade fixing member, and the centrifugal fan blade fixing member is used to cooperate with the shaft sleeve to mount the centrifugal fan blade on the rotating shaft of the inner rotor motor.

[0008] In one embodiment, the sleeve mounting portion is cylindrical.

[0009] In one embodiment, the inner rotor motor mounting structure further includes a cover cap, which is detachably mounted on the sleeve mounting portion. When the hub portion is connected to the outer rotor motor through the outer rotor motor mounting structure, the cover cap can be selectively sleeved on the sleeve mounting portion.

[0010] In one embodiment, the outer rotor motor mounting structure includes an outer rotor mounting portion, which is arranged on the hub in a ring shape around the inner rotor motor mounting structure, and the outer rotor mounting portion is connected to the outer rotor of the outer rotor motor through a connecting piece.

[0011] In one embodiment, the outer rotor motor mounting structure further includes a vibration-damping washer, which is arranged on the upper side of the outer rotor mounting portion and / or the lower side of the outer rotor mounting portion.

[0012] In one embodiment, the outer rotor motor mounting structure further includes a fastening washer, which is arranged on the upper side of the outer rotor mounting portion, and the connecting member passes through the fastening washer and the outer rotor mounting portion to be connected to the outer rotor of the outer rotor motor.

[0013] In one embodiment, a convex rib structure is formed on the hub portion, and the convex rib structure is used to cooperate with the vibration-damping gasket.

[0014] In one embodiment, the centrifugal fan blade further includes a guide ring, and the blade is arranged between the guide ring and the bottom plate.

[0015] The present invention also provides a fan, comprising centrifugal fan blades, which are the centrifugal fan blades mentioned above.

[0016] The present invention also provides an air conditioner, comprising a fan, which is the above-mentioned fan.

[0017] In the above embodiment, when the inner rotor motor is used, the inner rotor motor mounting structure on the hub is connected to the inner rotor motor; when the outer rotor motor is used, the rotor motor mounting structure on the hub is connected to the outer rotor motor. In this way, the compatibility of the centrifugal fan blade is improved, so that the centrifugal fan blade of the present invention can be applied to both inner rotor motors and outer rotor motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention 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 accompanying drawings:

[0019] Figure 1 is a schematic structural diagram of a centrifugal fan blade according to an embodiment of the present invention installed on an inner rotor motor;

[0020] Figure 2 is a schematic diagram of a structure in which a centrifugal fan blade according to an embodiment of the present invention is installed on an outer rotor motor;

[0021] Figure 3 yes Figure 2 A schematic diagram of the structure of a centrifugal fan blade without an outer rotor motor installed, viewed from above. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0023] Figure 1 and Figure 2 The embodiment of the centrifugal fan blade of the present invention is shown, and the centrifugal fan blade includes a bottom plate 10 and a blade 20 arranged on the bottom plate 10. A hub portion 11 is formed in the middle of the bottom plate 10, an inner rotor motor mounting structure 30 is arranged at the center of the hub portion 11, and an outer rotor motor mounting structure 40 is formed on the hub portion 11 around the inner rotor motor mounting structure 30. The hub portion 11 can be selectively connected to the inner rotor motor i through the inner rotor motor mounting structure 30 or connected to the outer rotor motor o through the outer rotor motor mounting structure 40.

[0024] By applying the technical solution of the present invention, when the inner rotor motor is used, the inner rotor motor mounting structure 30 on the hub portion 11 is connected to the inner rotor motor i; when the outer rotor motor is used, the rotor motor mounting structure 40 on the hub portion 11 is connected to the outer rotor motor o. In this way, the compatibility of the centrifugal fan blade is improved, so that the centrifugal fan blade of the present invention can be applied to both the inner rotor motor i and the outer rotor motor o.

[0025] like Figure 1 As shown, in the technical solution of this embodiment, the inner rotor motor mounting structure 30 includes a sleeve mounting portion 31 and a sleeve 32, the sleeve mounting portion 31 is connected to the center of the hub portion 11, and the sleeve 32 is detachably mounted in the sleeve mounting portion 31. When the design of the inner rotor motor is adopted, the sleeve 32 is connected to the rotating shaft of the inner rotor motor i. When the hub portion 11 is connected to the outer rotor motor o through the outer rotor motor mounting structure 40, the sleeve 32 can be removed from the sleeve mounting portion 31, or the sleeve 32 can continue to be installed in the sleeve mounting portion 31.

[0026] More preferably, in the technical solution of this embodiment, the inner rotor motor mounting structure 30 includes a centrifugal fan blade fixing member 33, and when in use, the centrifugal fan blade fixing member 33 cooperates with the shaft sleeve 32 to install the centrifugal fan blade on the rotating shaft of the inner rotor motor i. More preferably, the inner rotor motor mounting structure 30 also includes a washer nut, which is arranged on the outside of the shaft sleeve 32. When in use, the rotating shaft of the inner rotor motor i cooperates with the shaft sleeve 32 and is fixed by the centrifugal fan blade fixing member 33 and the washer nut.

[0027] Optionally, in the technical solution of this embodiment, the shaft sleeve mounting portion 31 is cylindrical. As other optional implementations, the shaft sleeve mounting portion 31 can also be a cylindrical structure of other structures.

[0028] like Figure 2 As shown, in the technical solution of this embodiment, the inner rotor motor mounting structure 30 also includes a cap 34, which is detachably mounted on the sleeve mounting portion 31. When the hub portion 11 is connected to the outer rotor motor o through the outer rotor motor mounting structure 40, the cap 34 can be sleeved on the sleeve mounting portion 31 to avoid the hole in the sleeve mounting portion 31 from affecting the outer rotor motor o. When the hub portion 11 is connected to the inner rotor motor i through the inner rotor motor mounting structure 30, the cap 34 can be removed to perform a normal shaft connection of the inner rotor motor i. Preferably, a convex point that matches the cap 34 is provided on the hub portion 11, thereby improving the adhesion effect of the cap 34 and the hub portion 11. During assembly, the structure can be used to make the cap 34 and the hub portion 11 fit tightly without the risk of falling, while shielding the opening of the sleeve mounting portion 31, which conforms to the aesthetic design of the product.

[0029] like Figure 2 As shown, in the technical solution of this embodiment, the outer rotor motor mounting structure 40 includes an outer rotor mounting portion 41, and the outer rotor mounting portion 41 is arranged in a ring shape around the inner rotor motor mounting structure 30 on the hub portion 11. When the hub portion 11 is connected to the outer rotor motor o through the outer rotor motor mounting structure 40, the outer rotor mounting portion 41 is connected to the outer rotor of the outer rotor motor o through the connecting member f. Optionally, the connecting member f can be a screw or a bolt.

[0030] More preferably, in the technical solution of this embodiment, if Figure 2 As shown, the outer rotor motor mounting structure 40 further includes an upper vibration-damping gasket 42a and a lower vibration-damping gasket 42b, which are respectively arranged on the upper side and the lower side of the outer rotor mounting portion 41. As another optional embodiment, only one vibration-damping gasket 42 may be arranged, and it is also feasible to arrange the vibration-damping gasket 42 on the upper side of the outer rotor mounting portion 41 or on the lower side of the outer rotor mounting portion 41. The vibration-damping gasket 42 can make the outer rotor mounting portion 41 and the outer rotor of the outer rotor motor 0 closely fit and reduce vibration.

[0031] As an optional implementation, Figure 3As shown, a convex rib structure 111 is formed on the hub portion 11, and the convex rib structure 111 is used to cooperate with the vibration-damping gasket 42 to increase the friction force on the vibration-damping gasket 42 and prevent the vibration-damping gasket 42 from falling off. More preferably, the convex rib structure 111 is annular, which can also improve the strength of the hub portion 11. As other optional embodiments, the convex rib structure 111 can also be a triangle or other geometric shapes.

[0032] More preferably, in the technical solution of this embodiment, if Figure 2 As shown, the outer rotor motor mounting structure 40 further includes a fastening washer 43, which is disposed on the upper side of the outer rotor mounting portion 41. The connector f passes through the fastening washer 43 and the outer rotor mounting portion 41 and is connected to the outer rotor of the outer rotor motor o, and the fastening washer 43 can improve the connection effect.

[0033] like Figure 1 and Figure 2 As shown, the centrifugal fan blade also includes a guide ring 50, and the blade 20 is arranged between the guide ring 50 and the bottom plate 10. The stability of the fixed installation of the blade 20 can be improved through the dual-effect fixation of the guide ring 50 and the bottom plate 10. Preferably, in the technical solution of this embodiment, the hub portion 11 is an arc-shaped convex shape, which is conducive to the fastening and vibration reduction of the centrifugal fan blade, and the annular convex shape can improve the stress condition of the centrifugal fan blade.

[0034] The present invention also provides a fan, including the above-mentioned centrifugal fan blades. The fan using the above-mentioned centrifugal fan blades has greater versatility and different types of motors can be selected according to different design requirements.

[0035] The present invention also provides an air conditioner, comprising the above-mentioned fan. The air conditioner can reduce the production cost of the air conditioner by using the above-mentioned fan.

[0036] From the above content, it can be seen that by adopting the technical solution of the present invention, only a centrifugal fan blade and a corresponding mold need to be designed, so that the centrifugal fan blade can be compatible with inner rotor motors and outer rotor motors, reducing R&D costs and mold opening costs. The technical solution of the present invention can allow a centrifugal fan blade to be matched with different inner and outer rotor motors on different housings, enhance the usability of the product, adapt to different housings, and improve the commonality of key components.

[0037] 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 embodiments of 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. A centrifugal fan blade, characterized in that: The invention comprises a base plate (10) and blades (20) arranged on the base plate (10); a hub portion (11) is formed in the middle of the base plate (10); an inner rotor motor mounting structure (30) is arranged at the center of the hub portion (11); an outer rotor motor mounting structure (40) is formed on the hub portion (11) around the inner rotor motor mounting structure (30); the hub portion (11) can be selectively connected to the inner rotor motor via the inner rotor motor mounting structure (30) or connected to the outer rotor motor via the outer rotor motor mounting structure (40); The inner rotor motor mounting structure (30) comprises: A shaft sleeve mounting portion (31) connected to the center of the hub portion (11); a shaft sleeve (32) detachably mounted in the shaft sleeve mounting portion (31); the shaft sleeve (32) is used to be connected to the rotating shaft of the inner rotor motor; when the hub portion (11) is connected to the outer rotor motor via the outer rotor motor mounting structure (40), the shaft sleeve (32) can be selectively mounted in the shaft sleeve mounting portion (31); a centrifugal fan blade fixing member (33), the centrifugal fan blade fixing member (33) being used to cooperate with the shaft sleeve (32) to mount the centrifugal fan blade on the rotating shaft of the inner rotor motor; The outer rotor motor mounting structure (40) comprises an outer rotor mounting portion (41), the outer rotor mounting portion (41) being arranged on the hub portion (11) in an annular shape around the inner rotor motor mounting structure (30), the outer rotor mounting portion (41) being connected to the outer rotor of the outer rotor motor via a connecting member (f); the outer rotor motor mounting structure (40) further comprises a vibration-damping gasket (42), the vibration-damping gasket (42) being arranged on the upper side of the outer rotor mounting portion (41) and / or on the lower side of the outer rotor mounting portion (41); the outer rotor motor mounting structure (40) further comprises a fastening gasket (43), the fastening gasket (43) being arranged on the upper side of the outer rotor mounting portion (41), the connecting member (f) passing through the fastening gasket (43) and the outer rotor mounting portion (41) to be connected to the outer rotor of the outer rotor motor.

2. The centrifugal fan blade according to claim 1, characterized in that: The shaft sleeve mounting portion (31) is cylindrical.

3. The centrifugal fan blade according to claim 1, characterized in that: The inner rotor motor mounting structure (30) further comprises a cover cap (34), wherein the cover cap (34) is detachably mounted on the shaft sleeve mounting portion (31); when the hub portion (11) is connected to the outer rotor motor via the outer rotor motor mounting structure (40), the cover cap (34) can be selectively sleeved on the shaft sleeve mounting portion (31).

4. The centrifugal fan blade according to claim 1, characterized in that: A convex rib structure (111) is formed on the hub portion (11), and the convex rib structure (111) is used to cooperate with the vibration-damping gasket (42).

5. The centrifugal fan blade according to claim 1, characterized in that: The centrifugal fan blade further comprises a guide ring (50), and the blade (20) is arranged between the guide ring (50) and the bottom plate (10).

6. A fan, comprising a centrifugal fan blade, characterized in that: The centrifugal fan blade is the centrifugal fan blade according to any one of claims 1 to 5.

7. An air conditioner, comprising a fan, characterized in that: The fan is the fan described in claim 6.

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