Impeller assembly, motor assembly, fan and range hood

Abstract

The impeller assembly comprises a connecting disc and a plurality of blades, the blades are annularly connected to the connecting disc to form a blade ring, a connecting seat is arranged on the connecting disc, a penetrating hole is formed in the connecting seat, and the center of the penetrating hole and the center of the blade ring meet the concentric condition. And a plurality of clamping parts are arranged around the penetrating hole on the connecting seat. A plurality of clamping parts are arranged around the penetrating hole, when the impeller assembly is applied to a fan and connected with a motor shaft, the clamping parts can be clamped with a part of the motor shaft, so that the connection stability of the impeller assembly and the motor shaft is enhanced, and the phenomenon that the impeller assembly is damaged when the diameter of the blade ring is large or the rotating speed of the blade ring is high is avoided. And in addition, the service life of the impeller assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to an impeller assembly, a motor assembly, a fan and a range hood. Background Art

[0002] As people's quality of life improves, their expectations for kitchen cooking environments are also growing. Range hoods have become an indispensable appliance in modern homes. A range hood uses a motor to drive the impeller at high speed, creating a negative pressure zone near the smoke collection chamber, drawing fumes into the hood and exhausting them outdoors.

[0003] In existing range hoods, the impeller mounting structure is mostly like this: the impeller center disc is riveted to the shaft sleeve, and the motor shaft passes through the sleeve and is locked by a locking component. In other words, the impeller and motor shaft are fixedly connected by the shaft end locking, so that the impeller rotates with the motor shaft. To achieve high air volume and high air pressure characteristics of range hoods, this is currently mostly achieved by increasing the diameter of the blade ring or increasing the impeller speed. However, as the blade ring diameter increases and the impeller speed increases, the impeller's rotational stability is easily affected by the method of locking the impeller and motor shaft. Vibration during rotation is prone to occur, resulting in increasing noise and even shortening the impeller's service life. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, an impeller assembly is provided, and the technical solution is as follows.

[0005] The impeller assembly includes a connecting disk and multiple blades. The multiple blades are connected to the connecting disk in a ring shape to form a blade ring. A connecting seat is provided on the connecting disk. A through hole is opened on the connecting seat. The center of the through hole and the center of the blade ring meet the concentric condition, and multiple latches are provided on the connecting seat around the through hole.

[0006] The impeller assembly of the present invention, on the one hand, the center of the through hole of the connecting seat and the center of the blade ring meet the concentric condition, and the connecting seat can stably drive the connecting plate to rotate the blade ring; on the other hand, a plurality of latching parts are provided around the through hole, and when the impeller assembly is applied to the fan and connected to the motor shaft, the latching parts can be latched with parts of the motor shaft to enhance the connection stability of the impeller assembly and the motor shaft; in this way, problems such as large noise and abnormal sound generated when the diameter of the blade ring is large or the rotation speed of the blade ring is fast are avoided, and the service life of the impeller assembly is improved.

[0007] For example, the multiple latching portions are evenly spaced along the circumferential direction of the connecting base. This arrangement allows multiple latching portions to disperse the applied force, preventing a single latching portion from being subjected to excessive force and being easily damaged. Furthermore, the multiple latching portions are evenly spaced along the circumferential direction of the connecting base, effectively distributing the applied force evenly across the latching portions.

[0008] For example, the connector base is further provided with multiple arc-shaped portions around the through-hole, each arc-shaped portion connecting between two adjacent latching portions. The multiple arc-shaped portions are formed on the same first circle, which is concentric with the through-hole. This arrangement enhances the structural strength of the latching portions and increases the mounting contact area of the latching portions, thereby further strengthening the connection stability between the impeller assembly and the motor shaft.

[0009] For example, the first circle has a first diameter D1, and the through-hole has an aperture D2, where D1 ≥ D2. This arrangement, when D1 = D2, facilitates manufacturing and reduces costs. When D1 > D2, the structural strength of the latch is enhanced, while effectively increasing the mounting contact area, further strengthening the connection stability between the impeller assembly and the motor shaft, and reducing noise or abnormal sounds generated during rotation.

[0010] For example, the connecting disc divides the blade ring into a first portion and a second portion along the axial direction of the blade ring. The first portion and the connecting disc enclose a first cavity, and the second portion and the connecting disc enclose a second cavity. The connecting seat is located in the first cavity or the second cavity. This arrangement is suitable for applications requiring high air volume and long blades. By dividing the blade ring into two portions through the connecting disc, the structural strength of the blade ring is increased, preventing the blades from being easily damaged.

[0011] For example, the connecting disc is connected to one end of the blade ring and forms a housing cavity with the blade ring, with the connecting seat located within the housing cavity. This arrangement is suitable for installation of the impeller assembly in a small space and for applications with short blades. The connecting disc is connected to one end of the blade ring, making it easy to remove and install the connecting disc, allowing for easy maintenance and cleaning by the user, while also saving costs.

[0012] According to another aspect of the present invention, a motor assembly is provided, comprising a motor body and a rotating shaft rotatable relative to the motor body. The rotating shaft is axially provided with a first shaft segment, a connecting protrusion segment, and a second shaft segment in sequence. The first shaft segment is connected to the motor body, and the connecting protrusion segment is provided with a plurality of engaging portions. Thus, when the motor assembly is applied to a fan and connected to a connecting disk of an impeller assembly, the engaging portions can be engaged with portions of the connecting disk to enhance the stability of the connection between the impeller assembly and the rotating shaft.

[0013] For example, the connecting protrusion section includes a shaft portion, and the engaging portion protrudes radially outward from the outer edge of the shaft portion. This arrangement ensures the structural strength of the connecting protrusion section, thereby further enhancing the stability of the connection between the impeller assembly and the rotating shaft, and has a simple structure and is easy to manufacture.

[0014] For example, the plurality of latch fitting portions are evenly spaced along the circumferential direction of the shaft portion. This arrangement can effectively and evenly distribute the force on each latch fitting portion, further avoiding the situation where a single latch fitting portion is subjected to excessive force and is easily damaged.

[0015] For example, the shaft portion has a third diameter D3, and the second shaft segment has a fourth diameter D4, where D3 ≥ D4. This arrangement, when D3 = D4, facilitates manufacturing and reduces costs. When D3 > D4, the structural strength of the latching engagement portion is effectively enhanced, while the mounting contact area is effectively increased, further strengthening the connection stability between the rotating shaft and the impeller assembly and reducing noise or abnormal sounds generated during rotation.

[0016] According to another aspect of the present invention, a fan is provided, comprising the impeller assembly described above and the motor assembly described above, wherein the second shaft segment is inserted through the insertion hole, and the plurality of latching mating portions are engaged with the plurality of latching portions in a one-to-one correspondence. Thus, by inserting the second shaft segment through the insertion hole, the impeller assembly and the motor assembly are connected, and the plurality of latching mating portions are engaged with the plurality of latching portions in a one-to-one correspondence, thereby enhancing the stability of the connection between the impeller assembly and the rotating shaft, avoiding problems such as loud noise and abnormal sounds generated when the blade ring has a large diameter or a high rotational speed, and increasing the service life of the impeller assembly.

[0017] For example, one end of the second shaft segment, distal from the connecting protrusion, extends beyond the through-hole to form an externally connected segment, with a locking member threadedly connected to the externally connected segment. This arrangement allows the locking member threadedly connected to the externally connected segment to further limit the axial position of the impeller assembly, thereby enhancing the stability of the connection between the impeller assembly and the rotating shaft, effectively preventing the latching portion and the latching mating portion from disengaging from each other, and achieving a simple and easy-to-operate structure.

[0018] For example, a handle is protruded from the outer surface of the locking member. In this way, the locking member can be disassembled and assembled through the handle, which saves effort and is convenient for the user to operate. The structure is simple and easy to process, thereby improving the user experience.

[0019] According to another aspect of the present invention, a range hood is provided, comprising a housing and the aforementioned fan, the fan being disposed within the housing. Since the aforementioned fan has the aforementioned beneficial effects, a range hood including the aforementioned fan also has the aforementioned beneficial effects, which will not be described in detail herein.

[0020] The Summary of the Utility Model introduces a series of simplified concepts, which will be further described in detail in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0021] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0023] Figure 1 A cross-sectional view of a fan according to an exemplary embodiment of the present invention;

[0024] Figure 2 A cross-sectional view of a fan according to another exemplary embodiment of the present invention;

[0025] Figure 3 for Figure 2 Exploded view of the impeller assembly in Figure 1;

[0026] Figure 4 for Figure 2 A three-dimensional diagram of the connecting seat in FIG.

[0027] Figure 5 for Figure 2 A perspective view of the motor assembly in FIG.

[0028] Figure 6 for Figure 5 AA section view in;

[0029] Figure 7 for Figure 2 A three-dimensional view of the locking member in FIG;

[0030] Figure 8 for Figure 2 A cross-sectional view of the locking member in FIG.

[0031] The above drawings include the following reference numerals:

[0032] 1. Fan; 10. Impeller assembly; 110. Blade ring; 111. Connecting plate; 112. Blades; 113. First portion; 114. Second portion; 115. First cavity; 116. Second cavity; 120. Connecting seat; 121. Through hole; 122. Clamping portion; 123. Arc-shaped portion; 124. First circle; 125. First annular portion; 130. Chassis; 140. Top plate; 20. Motor assembly; 210. Rotating shaft; 211. First shaft section; 212. Connecting protrusion section; 2121. Shaft; 2122. Clamping fitting portion; 213. Second shaft section; 2131. External section; 2131a, external thread; 220. Body; 30. Locking member; 310. Handle; 320. Internal thread; 330. Top wall; 340. Side wall. DETAILED DESCRIPTION

[0033] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0034] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0035] An embodiment of the present invention provides an impeller assembly, which can be connected to a motor assembly. Therefore, according to another aspect of the present invention, a motor assembly is provided, which can be connected to the impeller assembly. The impeller assembly provided in the present application is not limited to being connected to the motor assembly provided in the present application, and similarly, the motor assembly provided in the present application is not limited to being connected to the impeller assembly provided in the present application. Furthermore, according to another aspect of the present invention, a fan is provided, which can include any impeller assembly to be introduced below and any motor assembly to be introduced below. The fan provided by the present invention can be used in a range hood. The impeller assembly, motor assembly, fan and range hood provided according to the present invention will be introduced in detail below in conjunction with the accompanying drawings.

[0036] See also Figures 1 to 4The impeller assembly 10 may include a connecting disc 111 and a plurality of blades 112. The plurality of blades 112 may be connected to the connecting disc 111 in an annular shape to form a blade ring 110. The connecting disc 111 may be provided with a connecting seat 120. The connecting seat 120 may be provided with a through hole 121. The center of the through hole 121 may be concentric with the center of the blade ring 110, and the connecting seat 120 may be provided with a plurality of latching portions 122 around the through hole 121.

[0037] The impeller assembly 10 of the present invention, on the one hand, has the center of the through hole 121 of the connecting seat 120 and the center of the blade ring 110 meet the concentric condition, so that the connecting seat 120 can stably drive the connecting plate 111 to rotate the blade ring 110. On the other hand, a plurality of latching portions 122 are provided around the through hole 121. When the impeller assembly 10 is applied to the fan 1 and connected to the motor shaft, the latching portions 122 can be latched with portions of the motor shaft to enhance the connection stability between the impeller assembly 10 and the motor shaft. In this way, problems such as large noise and abnormal sounds caused by a large diameter of the blade ring 110 or a high rotation speed of the blade ring 110 are avoided, and the service life of the impeller assembly 10 is improved. It is understood that the motor shaft may include, but is not limited to, a rotating shaft 210 having a latching mating portion 2122.

[0038] Specifically, the connection plate 111 and the connection base 120 can be fixedly connected by riveting. Riveting has the advantages of simple process, high reliability, and easy disassembly, and it will not be affected by mechanical vibration and cause loosening. Of course, the connection plate 111 and the connection base 120 can also be connected by welding, bolting, etc.

[0039] Again, refer to Figures 1 to 4 , multiple latch parts 122 can be evenly spaced along the circumferential direction of the connecting seat 120. Specifically, the latch parts 122 can be 3, 6, 8, etc. The latch part 122 can be an integrally formed structure with the connecting seat 120. Of course, the latch part 122 can also be a split structure with the connecting seat 120. The latch part 122 and the connecting seat 120 can be connected as a whole by welding, pasting, etc. There are multiple latch parts 122, which can disperse the force and prevent the situation where a single latch part 122 is subjected to excessive force, causing the latch part 122 to be easily damaged. Moreover, the multiple latch parts 122 are evenly spaced along the circumferential direction of the connecting seat 120, which can effectively and evenly disperse the force on each latch part 122.

[0040] Again, refer to Figures 1 to 4The connection base 120 may further include multiple arcuate portions 123 around the through hole 121. Each arcuate portion 123 may be connected between two adjacent latch portions 122, and the multiple arcuate portions 123 may be formed on the same first circle 124. The first circle 124 may be concentric with the through hole 121. This enhances the structural strength of the latch portion 122 and increases the mounting contact area of the latch portion 122, thereby further strengthening the connection stability between the impeller assembly 10 and the motor shaft.

[0041] Again, refer to Figures 1 to 4 , the first circle 124 can have a first diameter D1, and the through hole 121 can have an aperture D2, D1≥D2. When D1=D2, it is easy to process and manufacture, saving costs. When D1>D2, the structural strength of the latch portion 122 is effectively enhanced, and at the same time, the installation contact area is effectively increased, further strengthening the connection stability between the impeller assembly 10 and the motor shaft, and reducing the noise or abnormal sound generated during rotation. It can be understood that when D1=D2, the first circle 124 can be the through hole 121, and when D1>D2, a first annular portion 125 can be formed between the arc portion 123 and the through hole 121.

[0042] In some embodiments, as Figure 4 , D1>D2, and the latch portion 122 and the first annular portion 125 can both be grooves. In this case, the latch portion 122 and the first annular portion 125 can be recessed from the end surface of the connecting seat 120 away from the connecting disk 111.

[0043] In some embodiments, D1>D2, and the latch portion 122 and the first annular portion 125 can both be protrusions. In this case, the latch portion 122, the first annular portion 125, and the connecting seat 120 can be an integrally formed structure, and the latch portion 122 and the first annular portion 125 can be formed by protruding from the end surface of the connecting seat 120 away from the connecting disk 111. Of course, it is not ruled out that at least two of the latch portion 122, the first annular portion 125, and the connecting seat 120 can be split structures. When at least two of the latch portion 122, the first annular portion 125, and the connecting seat 120 are split structures, they can be connected into one by welding, gluing, or other connection methods.

[0044] In some embodiments, D1>D2, and one of the latch portion 122 and the first annular portion 125 can be a protrusion, and the other can be a groove. In this case, the groove can be formed by being recessed from the end surface of the connection base 120 away from the connection disk 111, and the protrusion can be formed by protruding from the end surface of the connection base 120 away from the connection disk 111. The protrusion can be an integral structure with the connection base 120. Of course, the protrusion can also be a separate structure from the connection base 120, and connected to the connection base 120 as a whole through welding, gluing, or other connection methods.

[0045] In some embodiments, in the radial direction, the relationship between the latch portion 122 , the first annular portion 125 and the connecting seat 120 may be such that the total length of the latch portion 122 and the first diameter D1 is less than or equal to the length of the connecting seat 120 .

[0046] In some embodiments, D1=D2, the connection base 120 may only have a latch portion 122, and the latch portion 122 may be a protrusion or a groove. When the latch portion 122 is a groove, the latch portion 122 may be formed by being recessed from the end surface of the connection base 120 away from the connection disk 111. When the latch portion 122 is a protrusion, the latch portion 122 may be an integrally formed structure with the connection base 120, and the latch portion 122 may be formed by protruding from the end surface of the connection base 120 away from the connection disk 111. Of course, the latch portion 122 may also be a separate structure from the connection base 120, and be connected to the connection base 120 as a whole by welding, gluing, or other connection methods.

[0047] In some embodiments, in the radial direction, the relationship between the latch portion 122 , the through hole 121 and the connecting seat 120 may be such that the total length of the latch portion 122 and the hole diameter D2 is less than or equal to the length of the connecting seat 120 .

[0048] In some embodiments, the latch portion 122 may directly protrude radially outward from the outer edge of the connecting base 120 .

[0049] See also Figures 1 to 3 , the connecting disk 111 can divide the blade ring 110 into a first part 113 and a second part 114 in the axial direction of the blade ring 110. The first part 113 can be enclosed with the connecting disk 111 to form a first cavity 115. The second part 114 can be enclosed with the connecting disk 111 to form a second cavity 116. The connecting seat 120 can be located in the first cavity 115 or the second cavity 116. It can be understood that at this time, the connecting disk 111 can be a middle disk, connected to the middle part of the blade ring 110. In this way, it can be used in situations where a large air volume is required and the length of the blade 112 is long. The blade ring 110 is divided into two parts by the connecting disk 111, so that the structural strength of the blade ring 110 is higher, and the blade 112 is avoided from being easily damaged. Of course, it is also applicable to situations where two blade rings 110 are connected through the connecting disk 111.

[0050] Specifically, the impeller assembly 10 may further include a bottom plate 130 and a top plate 140. The bottom plate 130 and the top plate 140 may be connected to both ends of the blade ring 110, respectively. In this way, the structural strength of the blade ring 110 is further improved.

[0051] In an embodiment not shown in the figure, the connecting disk 111 can be connected to one end of the blade ring 110, and can be enclosed with the blade ring 110 to form a receiving cavity (not shown in the figure). The connecting seat 120 can be located in the receiving cavity. It is understandable that at this time, the connecting disk 111 can be a top disk 140 or a bottom disk 130, which is connected to the end of the blade ring 110. In this way, it can be suitable for the case where the impeller assembly 10 is installed in a smaller space and the length of the blade 112 is shorter. The connecting disk 111 is connected to one end of the blade ring 110, which is not only convenient for disassembling and assembling the connecting disk 111, and convenient for users to inspect and clean the connecting disk 111, but also saves costs. Of course, it is not ruled out that it is applicable to the case where the length of the blade 112 is shorter.

[0052] According to another aspect of the present invention, Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , provides a motor assembly 20, which may include a body 220 and a rotating shaft 210 rotatable relative to the body 220. The rotating shaft 210 may be provided with a first shaft section 211, a connecting protrusion section 212, and a second shaft section 213 in sequence in the axial direction. The first shaft section 211 may be connected to the body 220. A plurality of latching fitting portions 2122 may be provided on the connecting protrusion section 212. In this way, when the motor assembly 20 is applied to the fan 1 and connected to the connecting disk 111 of the impeller assembly 10, the latching fitting portion 2122 may be latched with a portion of the connecting disk 111 to enhance the connection stability between the impeller assembly 10 and the rotating shaft 210. It is understandable that the connecting disk 111 includes but is not limited to the above-mentioned connecting disk 111 with the latching portion 122.

[0053] In some embodiments, again in conjunction with reference to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , the connecting convex section 212 may have a shaft portion 2121. The latch fitting portion 2122 may protrude radially outward from the outer edge of the shaft portion 2121. Understandably, the latch fitting portion 2122 and the shaft portion 2121 are an integral structure. In this way, the structural strength of the connecting convex section 212 is ensured, while the installation contact area of the latch fitting portion 2122 is effectively increased, thereby further strengthening the connection stability between the impeller assembly 10 and the rotating shaft 210, and the structure is simple and easy to manufacture. Of course, the latch fitting portion 2122 and the shaft portion 2121 may also be a split structure. The latch fitting portion 2122 and the shaft portion 2121 may be connected as one by welding, gluing, or the like.

[0054] See also Figure 1 、 Figure 2 、 Figure 5 and Figure 6The multiple latching mating portions 2122 can be evenly spaced along the circumference of the shaft portion 2121. Specifically, the number of latching mating portions 2122 can be 3, 6, 8, etc. This effectively and evenly distributes the applied force on each latching mating portion 2122, further preventing a single latching mating portion 2122 from being damaged due to excessive force.

[0055] Again, refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The shaft portion 2121 can have a third diameter D3, and the second shaft segment 213 can have a fourth diameter D4, where D3 ≥ D4. When D3 = D4, manufacturing is simplified, saving costs. When D3 > D4, the structural strength of the latching portion 2122 is effectively enhanced, while the mounting contact area is effectively increased, further strengthening the connection stability between the rotating shaft 210 and the impeller assembly 10 and reducing noise or abnormal sounds generated during rotation.

[0056] In some embodiments, D3 > D4, and the latching portion 2122 can be a protrusion or a groove. In this case, when the latching portion 2122 is a protrusion, the latching portion 2122 can be formed by protruding from the end surface of the shaft portion 2121 near the connecting disk 111. When the latching portion 2122 is a groove, the latching portion 2122 can be formed by being recessed from the end surface of the shaft portion 2121 near the connecting disk 111.

[0057] In some embodiments, in the radial direction, the relationship among the locking portion 2122 , the shaft portion 2121 and the second shaft segment 213 may be such that the total length of the locking portion 2122 and the fourth diameter D4 is less than or equal to the third diameter D3 .

[0058] In some embodiments, D3 > D4, and the shaft portion 2121 may further include multiple connecting portions around the second shaft segment 213. Each connecting portion may connect between two adjacent engaging portions 2122, and the multiple connecting portions may be formed on the same second circle. The second circle may be concentric with the second shaft segment 213. It is understood that the diameter of the connecting portion may be greater than the diameter of the second shaft segment 213, forming a second annular portion between the connecting portion and the second shaft segment 213.

[0059] For example, the latch fitting portion 2122 and the second annular portion may both be grooves. In this case, the latch fitting portion 2122 and the second annular portion may be formed by being recessed from an end surface of the shaft portion 2121 close to the connecting disk 111 .

[0060] For example, the latching mating portion 2122 and the second annular portion can both be protrusions. In this case, the latching mating portion 2122, the second annular portion, and the shaft portion 2121 can be an integrally formed structure, and the latching mating portion 2122 and the second annular portion can be formed by protruding from the end surface of the shaft portion 2121 near the connecting disk 111. Of course, it is not ruled out that at least two of the latching mating portion 2122, the second annular portion, and the shaft portion 2121 can be split structures. When at least two of the latching mating portion 2122, the second annular portion, and the shaft portion 2121 are split structures, they can be connected into one piece by welding, gluing, or other connection methods.

[0061] For example, one of the latching portion 2122 and the second annular portion may be a protrusion, and the other may be a groove. In this case, the groove may be formed as a depression from the end surface of the shaft portion 2121 near the connecting disk 111, and the protrusion may be formed as a protrusion from the end surface of the shaft portion 2121 near the connecting disk 111. The protrusion may be integral with the shaft portion 2121. Of course, the protrusion may also be a separate structure from the shaft portion 2121, connected to the shaft portion 2121 by welding, gluing, or other connection methods.

[0062] In some embodiments, in the radial direction, the relationship between the latching fitting portion 2122, the second annular portion and the shaft portion 2121 can be: the total length of the latching fitting portion 2122 and the diameter of the second circle where the second annular portion is located is less than or equal to the third diameter D3.

[0063] According to another aspect of the present invention, Figures 1 to 6 , provides a fan 1, including the impeller assembly 10 as described above and the motor assembly 20 as described above. The second shaft segment 213 can be inserted into the penetration hole 121. The plurality of latching fitting portions 2122 can be respectively corresponding to and latched with the plurality of latching portions 122. In this way, by inserting the second shaft segment 213 into the penetration hole 121, the connection between the impeller assembly 10 and the motor assembly 20 is achieved, and at the same time, the plurality of latching fitting portions 2122 are respectively corresponding to and latched with the plurality of latching portions 122, so as to enhance the connection stability between the impeller assembly 10 and the rotating shaft 210, avoid problems such as large noise and abnormal sound when the diameter of the blade ring 110 is large or the rotation speed of the blade ring 110 is fast, and improve the service life of the impeller assembly 10. It can be understood that any one of the multiple embodiments of the above-mentioned impeller assembly 10 can be connected to any one of the multiple embodiments of the above-mentioned motor assembly 20.

[0064] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8, one end of the second shaft section 213 away from the connecting protruding section 212 extends out of the through hole 121 to form an external section 2131. A locking member 30 can be threadedly connected to the external section 2131. The threaded connection is not only easy to process and easy for users to disassemble, but also has the characteristics of high connection firmness. Specifically, an external thread 2131a can be provided on the external section 2131, and an internal thread 320 can be provided on the locking member 30. It can be understood that providing an external thread 2131a on the external section 2131 is easier to process than providing an internal thread 320, and providing an external thread 2131a on the external section 2131 better ensures the structural strength of the external section 2131. Of course, it is also possible to provide an internal thread 320 on the external section 2131 and an external thread 2131a on the locking member 30. The locking member 30 threadedly connected to the external section 2131 can further limit the axial position of the impeller assembly 10, thereby enhancing the stability of the connection between the impeller assembly 10 and the rotating shaft 210, effectively preventing the latch portion 122 and the latch engagement portion 2122 from disengaging from each other, and has a simple structure that is easy to operate. Of course, the external section 2131 and the locking member 30 can also be connected through other structures.

[0065] See also Figure 1 、 Figure 2 、 Figure 7 and Figure 8 , a holding portion 310 may protrude from the outer surface of the locking member 30. The holding portion 310 may be formed by protruding outward from the top wall 330 of the locking member 30. Specifically, the holding portion 310 may be a rectangular parallelepiped, which has high structural strength and is easy to process, and is convenient for the user to grasp and twist. Of course, the holding portion 310 may also be in other shapes, such as a sphere, a cylinder, etc. The holding portion 310 may also be formed by protruding outward from the side wall 340 of the locking member 30. The locking member 30 is disassembled and assembled by the holding portion 310, which saves effort and is convenient for the user to operate, and the structure is simple and easy to process, thereby improving the user's experience.

[0066] According to another aspect of the present invention, a range hood is provided. The range hood may include a housing (not shown) and the fan 1 described above. The fan 1 may be disposed within the housing. Since the fan 1 described above has the aforementioned beneficial effects, a range hood including the fan 1 also has the aforementioned beneficial effects, which will not be further elaborated here.

[0067] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0068] For ease of description, area-relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that area-relative terms include not only the orientation of the components as described in the figures, but also different orientations in use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0069] 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, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0070] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0071] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impeller assembly comprising a connecting disc and a plurality of blades, wherein the plurality of blades are connected to the connecting disc in an annular shape to form a blade ring, characterized in that: The connecting disc is provided with a connecting seat, the connecting seat is provided with a through hole, the center of the through hole and the center of the blade ring meet the concentric condition, and the connecting seat is provided with a plurality of latching parts around the through hole.

2. The impeller assembly according to claim 1, characterized in that The plurality of latch portions are evenly spaced and distributed along the circumferential direction of the connecting seat.

3. The impeller assembly according to claim 2, characterized in that The connecting seat is further provided with a plurality of arc-shaped portions around the penetration hole, each of the arc-shaped portions is connected between two adjacent latching portions, and the plurality of arc-shaped portions are formed on the same first circle, which is concentric with the penetration hole.

4. The impeller assembly according to claim 3, characterized in that The first circle has a first diameter D1, the through hole has an aperture D2, and D1 ≥ D2.

5. The impeller assembly according to claim 1, wherein: The connecting disk divides the blade ring into a first part and a second part in the axial direction of the blade ring. The first part and the connecting disk form a first cavity, and the second part and the connecting disk form a second cavity. The connecting seat is located in the first cavity or the second cavity.

6. The impeller assembly according to claim 1, characterized in that The connecting disk is connected to one end of the blade ring and encloses the blade ring to form a receiving cavity. The connecting seat is located in the receiving cavity.

7. A motor assembly comprising a body and a rotating shaft rotatable relative to the body, characterized in that: The rotating shaft is provided with a first shaft segment, a connecting protrusion segment and a second shaft segment in sequence in the axial direction. The first shaft segment is connected to the body, and the connecting protrusion segment is provided with a plurality of latching fitting parts.

8. The motor assembly according to claim 7, characterized in that The connecting protrusion section has a shaft portion, and the latch fitting portion protrudes radially outward from an outer edge of the shaft portion.

9. The motor assembly according to claim 8, characterized in that The plurality of engaging portions are evenly spaced apart along the circumferential direction of the shaft portion.

10. The motor assembly according to claim 8, wherein The shaft portion has a third diameter D3, and the second shaft segment has a fourth diameter D4, where D3 ≥ D4.

11. A fan, characterized in that: It comprises the impeller assembly as described in any one of claims 1-6 and the motor assembly as described in any one of claims 7-10, the second shaft segment is passed through the passing hole, and the multiple locking fitting parts are locked with the multiple locking parts in a one-to-one correspondence.

12. The fan according to claim 11, characterized in that One end of the second shaft segment away from the connecting protrusion segment extends out of the penetration hole to form an external connection segment, and a locking piece is threadedly connected to the external connection segment.

13. The fan according to claim 12, characterized in that A holding portion protrudes from the outer surface of the locking piece.

14. A range hood, characterized in that: The invention comprises a box body and a fan as described in any one of claims 11 to 13, wherein the fan is arranged inside the box body.

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