Air handling unit and range hood

Abstract

This utility model provides a fan housing assembly and a range hood, including a cabinet and a fan. The cabinet encloses a receiving cavity, and the fan has a volute and an external rotor motor. The volute is located within the receiving cavity and encloses a mounting cavity, with the external rotor motor at least partially located within the mounting cavity. A fixing part is provided on the inner wall of the cabinet, and the external rotor motor has a motor shaft, the end of which is connected to the fixing part. In this utility model, on the one hand, the fixing point of the external rotor motor is moved from the volute to the cabinet, cutting off the transmission path of vibration generated by the external rotor motor to the volute. The fixing part does not occupy the area of ​​the fan's air intake area, effectively ensuring the fan's air intake efficiency and significantly improving the smoke extraction effect of the range hood. On the other hand, the fixing part is located on the inner wall of the cabinet, enhancing the cabinet's strength and effectively absorbing the vibration generated by the external rotor motor, thereby reducing the noise of the fan housing assembly.

Description

Technical Field

[0001] This utility model relates to the field of kitchenware technology, specifically to a fan cabinet assembly and a range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. It can quickly remove the exhaust gas produced by the stove and the oil fumes generated during cooking and exhaust them outdoors, thereby purifying the kitchen environment.

[0003] Current range hoods typically use an internal rotor motor as the power output component. The motor shaft of the internal rotor motor is connected to the motor housing via bearings, and the motor housing is connected to the volute via a support structure.

[0004] However, the vibrations generated by the internal rotor motor during operation can be transmitted through the motor shaft to the motor housing, and then through the motor housing to the volute, causing resonance in the volute cavity and significantly increasing the noise of the internal rotor motor. Furthermore, to ensure the robust connection between the motor housing and the volute, a complex support structure needs to be installed at the air inlet of the volute. This occupies a large area of ​​the airflow channel at the air inlet, resulting in a loss of air intake efficiency for the internal rotor motor and consequently reducing the smoke extraction effect of the range hood. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a blower assembly is provided, the technical solution of which is as follows.

[0006] The air handling unit assembly includes a cabinet and a fan. The cabinet encloses a receiving cavity, and the fan has a volute and an external rotor motor. The volute is located inside the receiving cavity and encloses a mounting cavity. The external rotor motor is at least partially located inside the mounting cavity. A fixing part is provided on the inner side wall of the cabinet, and the external rotor motor has a motor shaft. The end of the motor shaft is connected to the fixing part.

[0007] The fan housing assembly of this invention can use an external rotor motor as the power component, which features high torque and low speed. When applied to a range hood, the external rotor motor can improve the range hood's smoke extraction efficiency. Furthermore, the external rotor motor is at least partially located within the mounting cavity, and a fixing part is provided on the inner wall of the cabinet. The external rotor motor has a motor shaft, the end of which is connected to the fixing part. On one hand, the fixing point of the external rotor motor is moved from the volute to the cabinet, cutting off the transmission path of vibrations generated by the external rotor motor to the volute. The fixing part does not occupy the area of ​​the fan's air intake area, effectively ensuring the fan's air intake efficiency and thus significantly improving the range hood's smoke extraction effect. On the other hand, the fixing part being located on the inner wall of the cabinet enhances the cabinet's strength and can effectively absorb the vibrations generated by the external rotor motor, thereby reducing the noise of the fan housing assembly.

[0008] For example, the fixing part and the cabinet form a connecting groove, and the end of the motor shaft is embedded in the connecting groove. This arrangement provides stable positioning and support for the motor shaft, thereby effectively ensuring the stability of the connection between the cabinet and the motor shaft.

[0009] For example, the fixing part includes a pressed protrusion and a pressing member. The pressed protrusion protrudes from the inner sidewall of the cabinet toward the receiving cavity, and the pressed protrusion is configured as an enclosure with an opening. The pressing member covers the opening, and at least a portion of the pressing member and at least a portion of the pressed protrusion enclose each other to form the groove sidewall of the connecting groove. With this configuration, on the one hand, the pressed protrusion protruding from the inner sidewall of the cabinet toward the receiving cavity not only enhances the strength of the cabinet and can effectively absorb the vibration generated by the external rotor motor, significantly reducing the noise of the air handling unit assembly, but also avoids increasing the space occupied by the air handling unit assembly; on the other hand, fixing the end of the motor shaft by the pressed protrusion and the pressing member prevents the motor shaft from shaking in the radial direction, ensuring the stability of the connection between the fixing part and the motor shaft.

[0010] For example, the groove sidewall has a flat limiting part, and the end of the motor shaft has a flat mating part that abuts against the flat limiting part. With this configuration, the mating between the flat limiting part and the flat mating part not only improves the connection strength between the motor shaft and the forming protrusion and the pressing part, but also prevents accidental rotation of the motor shaft, ensuring the stability of the external rotor motor operation.

[0011] For example, the forming protrusion has a first enclosing body and a first straight body, the first straight body extending straight from both sides of the first enclosing body; the pressing member has a second enclosing body and a second straight body, the second straight body extending straight from both sides of the second enclosing body; the second enclosing body and the first enclosing body are relatively joined to form a groove sidewall, and the second straight body and the first straight body form a surface contact. This configuration, on the one hand, increases the contact area between the motor shaft and the forming protrusion and the pressing member by having the first and second enclosing bodies relatively enclose the groove sidewall connecting the motor shaft, thereby effectively ensuring the stability of the connection between the motor shaft and the forming protrusion and the pressing member; on the other hand, the surface contact between the second straight body and the first straight body allows the forming protrusion and the pressing member to connect, improving the connection strength between the pressing member and the forming protrusion.

[0012] For example, the straight limiting part includes a first limiting part and a second limiting part. The first limiting part is disposed on the first enclosing body, and the second limiting part is disposed on the second enclosing body, with the second limiting part being disposed opposite to the first limiting part. This arrangement not only better restricts the rotation of the motor shaft and enhances the stability of the external rotor motor operation, but also facilitates manufacturing and improves processing efficiency.

[0013] For example, the pressing component has an enclosing portion and a connecting portion. The enclosing portion encloses at least a portion of the pressed protrusion, and the connecting portion extends and bends from the end of the enclosing portion, forming a surface contact with the cabinet. This configuration, on the one hand, fixes the end of the motor shaft by enclosing at least a portion of the pressed protrusion, preventing radial wobbling of the motor shaft and ensuring the stability of the connection between the fixing portion and the motor shaft; on the other hand, the surface contact between the connecting portion and the cabinet enhances the connection strength between the cabinet and the fixing portion, effectively absorbing vibrations generated by the external rotor motor, thereby reducing the noise of the fan assembly.

[0014] For example, the end of the motor shaft has a distal end face away from the volute, and the distal end face forms a surface contact with the inner sidewall of the cabinet. This configuration increases the contact area between the cabinet and the motor shaft and restricts the axial movement of the motor shaft, thereby effectively ensuring the stability of the connection between the cabinet and the motor shaft.

[0015] For example, the cabinet has an inwardly protruding portion that extends into the receiving cavity, and a fixing portion is disposed on the inner sidewall of the inwardly protruding portion. This arrangement not only avoids increasing the space occupied by the air handling unit, but also further enhances the strength of the cabinet, effectively absorbing the vibration generated by the external rotor motor, thereby reducing the noise of the air handling unit.

[0016] For example, the motor shaft has a first end and a second end, the cabinet has two oppositely arranged side plates, and the fixing part has a first fixing part and a second fixing part, which are respectively disposed on the side plates. The first end is connected to the first fixing part, and the second end is connected to the second fixing part. With this configuration, on the one hand, the fixing base of the external rotor motor is transferred from the volute to the side plates of the cabinet, cutting off the transmission path of vibration generated by the external rotor motor to the volute. The first and second fixing parts do not occupy the area of ​​the fan's air intake area, effectively ensuring the fan's air intake efficiency. On the other hand, the connection of the first end to the first fixing part and the second end to the second fixing part fixes the motor shaft at both ends, providing stable support for the motor shaft and effectively preventing axial and radial swaying. This eliminates the cantilever torque that could lead to unstable operation of the external rotor motor, thereby significantly reducing the eccentricity of the external rotor motor and ensuring its operational stability.

[0017] According to another aspect of the present invention, a range hood is provided, which includes a smoke collection hood and a fan assembly as described above, with the smoke collection hood disposed below the fan assembly. The range hood of the present invention includes the fan assembly as described above. Since the fan assembly described above has the beneficial effects described above, the range hood including the fan assembly described above will necessarily also have the beneficial effects described above.

[0018] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0019] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0021] Figure 1 A front view of a bellows assembly, which is an exemplary embodiment of the present invention;

[0022] Figure 2 for Figure 1 Sectional view of AA;

[0023] Figure 3 for Figure 2 Enlarged view of section I;

[0024] Figure 4for Figure 2 A 3D view of some of the air handling unit components shown;

[0025] Figure 5 for Figure 4 A three-dimensional view of the side panel shown;

[0026] Figure 6 for Figure 4 A three-dimensional view of the pressed parts shown;

[0027] Figure 7 for Figure 2 A 3D view of the external rotor motor shown;

[0028] Figure 8 for Figure 7 Enlarged view of the middle L section.

[0029] The above figures include the following reference numerals:

[0030] 1. Air handling unit assembly; 10. Cabinet body; 110. Receiving cavity; 120. Inner sidewall; 130. Fixing part; 131. Pressed protrusion; 1311. First enclosing body; 1312. First flat body; 1312a. First mounting hole; 132. Pressing part; 1321. Second enclosing body; 1322. Second flat body; 1322a. Second mounting hole; 1323. Enclosing part; 1324. Connecting part; 1324a. Third mounting hole; 133. First fixing part; 134. Second fixing part; 140. Connecting groove; 141. Groove sidewall; 1411. Flat limiting part; 141 2. First limiting part; 1413. Second limiting part; 150. Side plate; 160. Fourth mounting hole; 170. Inner protrusion; 20. Fan; 210. Volute; 211. Mounting cavity; 220. Outer rotor motor; 221. Motor shaft; 2211. Straight mating part; 2212. First mating part; 2212a. First mating surface; 2212b. Second mating surface; 2213. Second mating part; 2213a. Third mating surface; 2213b. Fourth mating surface; 2214. Distal end surface; 2215. First end; 2216. Second end; 222. Rotor; 230. Impeller. Detailed Implementation

[0031] In the following description, numerous details are provided to enable 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, which 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.

[0032] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0033] This utility model provides a fan housing assembly. The fan housing assembly of this utility model can be applied to range hoods. The following will describe in detail a fan housing assembly according to an embodiment of this utility model with reference to the accompanying drawings.

[0034] See also Figures 1 to 3 The air handling unit assembly 1 may include a cabinet 10 and a fan 20. The cabinet 10 may enclose a receiving cavity 110. The fan 20 may have a volute 210 and an external rotor motor 220. The volute 210 may be located within the receiving cavity 110 and may enclose a mounting cavity 211, with the external rotor motor 220 at least partially located within the mounting cavity 211. A fixing part 130 may be provided on the inner sidewall 120 of the cabinet 10, and the external rotor motor 220 may have a motor shaft 221, the end of which may be connected to the fixing part 130. The external rotor motor 220 may be embedded within the mounting cavity 211 of the volute 210. When the rotor 222 of the external rotor motor 220 rotates, it can drive the impeller 230 of the fan 20 to rotate, drawing gas into the volute 210 and discharging it through the outlet of the volute 210. Understandably, a non-rigid connection can be used between the external rotor motor 220 and the volute 210 to prevent the vibration generated by the external rotor motor 220 from being transmitted to the volute 210.

[0035] It should be noted that when the fan housing component 1 is applied to a range hood, the cabinet 10 is the outer shell of the range hood, which needs to provide support and fixation for the range hood, bearing the weight of the range hood itself and various external forces generated during installation, such as handling, collisions during installation, and contact within the kitchen. Therefore, it needs to have high strength to ensure its stability and durability. To meet the functional requirements of support and protection, the cabinet 10 can be made of high-strength materials, such as stainless steel, cold-rolled steel plate, and aluminum-zinc coated steel plate. These materials, with high yield strength and tensile strength, can withstand greater external forces without deformation or damage. The volute 210 is located within the receiving cavity 110 formed by the cabinet 10. Its main function is to guide airflow, allowing air to be smoothly discharged outdoors through the fan 20. It mainly bears the impact force of the airflow and the vibration generated when the fan 20 is running. These forces are relatively small compared to the external forces borne by the cabinet 10, and the strength requirements are relatively low. Therefore, the volute 210 places greater emphasis on the aerodynamic performance and corrosion resistance of the materials, and can utilize relatively lightweight yet strong materials such as galvanized steel sheets, aluminum alloys, or engineering plastics. In other words, the cabinet 10 can be stronger than the volute 210, and the cabinet 10 absorbs the vibrations generated by the external rotor motor 220 better than the volute 210.

[0036] The fan assembly 1 of this invention can use an external rotor motor 220 as the power component. The external rotor motor 220 has the characteristics of high torque and low speed. When the external rotor motor 220 is applied to a range hood, the smoke extraction efficiency of the range hood can be improved. In addition, the external rotor motor 220 is at least partially located in the mounting cavity 211, and a fixing part 130 is provided on the inner side wall 120 of the cabinet 10. The external rotor motor 220 has a motor shaft 221, and the end of the motor shaft 221 is connected to the fixing part 130. On the one hand, the fixing base point of the external rotor motor 220 is transferred from the volute 210 to the cabinet 10, cutting off the transmission path of the vibration generated by the external rotor motor 220 to the volute 210. The fixing part 130 will not occupy the area of ​​the air intake area of ​​the fan 20, effectively ensuring the air intake efficiency of the fan 20, thereby significantly improving the smoke extraction effect of the range hood. On the other hand, the fixing part 130 is provided on the inner side wall 120 of the cabinet 10, which enhances the strength of the cabinet 10 and can effectively absorb the vibration generated by the external rotor motor 220, thereby reducing the noise of the fan cabinet assembly 1.

[0037] See again Figures 1 to 3 The fixing part 130 can be formed by enclosing the cabinet 10 to form a connecting groove 140, and the end of the motor shaft 221 can be embedded in the connecting groove 140. In this way, the motor shaft 221 can be provided with stable positioning and support, thereby effectively ensuring the stability of the connection between the cabinet 10 and the motor shaft 221.

[0038] In an embodiment not shown in the figure, the end of the motor shaft 221 can be recessed inward to form a connecting groove 140. The fixing part 130 can include a pressed protrusion, which can be formed by protruding from the inner sidewall 120 of the cabinet 10. The pressed protrusion can be embedded in the connecting groove 140, which increases the contact area between the fixing part 130 and the motor shaft 221, thereby effectively ensuring the stability of the connection between the fixing part 130 and the motor shaft 221.

[0039] See also Figures 2 to 6 The fixing part 130 may include a pressed protrusion 131 and a pressing member 132. The pressed protrusion 131 may protrude from the inner sidewall 120 of the cabinet 10 toward the receiving cavity 110, and the pressed protrusion 131 may be configured to form an enclosed shape with an opening. The pressing member 132 may cover the opening, and at least a portion of the pressing member 132 may surround at least a portion of the pressed protrusion 131 to form the groove sidewall 141 of the connecting groove 140. At least a portion of the inner sidewall 120 of the cabinet 10 may form the groove bottom wall of the connecting groove 140. The processing technology of the pressed protrusion 131 may be a stamping process (directly stamped from the plate of the cabinet 10) or a die casting process (die-cast through a mold). In one embodiment of the present invention, the pressed protrusion 131 may be U-shaped, and the pressing member 132 may be an inverted U-shaped corresponding to the pressed protrusion 131. In an embodiment not shown in the figures, the forming protrusion 131 may be U-shaped, and the pressing member 132 may be flat. The pressing member 132 may cover the opening of the forming protrusion 131, and at least a portion of the pressing member 132 may surround at least a portion of the forming protrusion 131 to form the groove sidewall 141 of the connecting groove 140. Alternatively, the forming protrusion 131 may be flat, and the pressing member 132 may be U-shaped. The forming protrusion 131 may cover the opening of the pressing member 132, and at least a portion of the pressing member 132 may surround at least a portion of the forming protrusion 131 to form the groove sidewall 141 of the connecting groove 140. Thus, on the one hand, the pressed protrusion 131 protrudes from the inner sidewall 120 of the cabinet 10 toward the receiving cavity 110, which not only enhances the strength of the cabinet 10 and effectively absorbs the vibration generated by the external rotor motor 220, significantly reducing the noise of the air handling unit 1, but also avoids increasing the space occupied by the air handling unit 1. On the other hand, by fixing the end of the motor shaft 221 with the pressed protrusion 131 and the pressing part 132, the motor shaft 221 is prevented from shaking in the radial direction, ensuring the stability of the connection between the fixing part 130 and the motor shaft 221. It should be noted that the pressed protrusion 131 can be set on the side plate 150 of the cabinet 10, protruding from the inner sidewall 120 of the side plate 150 toward the receiving cavity 110. The side plate 150 can be installed on a wall or cabinet or other mounting body. In this way, when the side plate 150 is installed on a wall or cabinet or other mounting body, there is no need to reserve additional installation space for the fixing part 130, saving the space occupied by the air handling unit 1.

[0040] In an embodiment not shown in the figures, the fixing part 130 may include a pressed protrusion 131, which protrudes from the inner sidewall 120 of the cabinet 10 toward the receiving cavity 110. The pressed protrusion 131 may be U-shaped, and the connecting groove 140 may be a U-shaped groove, into which the end of the motor shaft 221 may be embedded. Specifically, the pressed protrusion 131 may be connected to the motor shaft 221 by means of screw connection, interference fit, or snap-fit ​​connection. Thus, on the one hand, the pressed protrusion 131 protrudes from the inner sidewall 120 of the cabinet 10 toward the receiving cavity 110, which not only enhances the strength of the cabinet 10 and can effectively absorb the vibration generated by the external rotor motor 220, significantly reducing the noise of the air handling unit 1, but also avoids increasing the space occupied by the air handling unit 1; on the other hand, by fixing the end of the motor shaft 221 with the pressed protrusion 131, the phenomenon of the motor shaft 221 wobbling in the radial direction is reduced, ensuring the stability of the connection between the fixing part 130 and the motor shaft 221, and is easy to process, saving costs.

[0041] In an embodiment not shown in the figure, the fixing part 130 may include a pressed protrusion 131, which protrudes from the inner sidewall 120 of the cabinet 10 toward the receiving cavity 110 to form an annular protrusion. The inner annular wall of the protrusion forms the groove sidewall 141 of the connecting groove 140. Specifically, the pressed protrusion 131 can be connected to the motor shaft 221 by means of screw connection, interference fit, or snap connection. In this way, on the one hand, it not only enhances the strength of the cabinet 10 and effectively absorbs the vibration generated by the external rotor motor 220, significantly reducing the noise of the air handling unit 1, but also avoids increasing the space occupied by the air handling unit 1; on the other hand, by fixing the end of the motor shaft 221 with the pressed protrusion 131, it prevents the motor shaft 221 from shaking in the radial direction, ensuring the stability of the connection between the fixing part 130 and the motor shaft 221, and is easy to process, saving costs.

[0042] In an embodiment not shown in the figures, the fixing part 130 may include a pressed protrusion 131, which protrudes from the inner sidewall 120 of the cabinet 10 in a direction away from the receiving cavity 110. The inner wall surface of the pressed protrusion 131 forms a connecting groove 140, and the end of the motor shaft 221 can be embedded in the connecting groove 140. Specifically, the pressed protrusion 131 can be connected to the motor shaft 221 by means of screw connection, interference fit, or snap connection. In this way, on the one hand, the strength of the cabinet 10 is enhanced, the vibration generated by the external rotor motor 220 can be effectively absorbed, and the noise of the air handling unit 1 is significantly reduced; on the other hand, by fixing the end of the motor shaft 221 by the pressed protrusion 131, the motor shaft 221 is prevented from shaking in the radial direction, ensuring the stability of the connection between the fixing part 130 and the motor shaft 221, and is easy to process, saving costs.

[0043] See also Figure 2 , Figure 4 , Figure 5 and Figure 7 The groove sidewall 141 may have a straight limiting portion 1411. The end of the motor shaft 221 may have a straight mating portion 2211 that abuts against the straight limiting portion 1411. The number of straight limiting portions 1411 may be one, two, or more, and the number of straight mating portions 2211 may correspond to the number of straight limiting portions 1411. It should be noted that the more straight limiting portions 1411 and straight mating portions 2211 there are, the better the effect of restricting the circumferential rotation of the motor shaft 221. Thus, through the cooperation between the straight limiting portion 1411 and the straight mating portion 2211, not only can the connection strength between the motor shaft 221 and the forming protrusion 131 and the pressing member 132 be improved, but also the accidental rotation of the motor shaft 221 can be prevented, ensuring the stability of the operation of the external rotor motor 220.

[0044] See also Figures 2 to 5The pressed protrusion 131 may have a first enclosing body 1311 and a first straight body 1312. The first straight body 1312 may extend straight from both sides of the first enclosing body 1311. The pressed member 132 may have a second enclosing body 1321 and a second straight body 1322. The second straight body 1322 may extend straight from both sides of the second enclosing body 1321. The second enclosing body 1321 and the first enclosing body 1311 may be coupled to form a groove sidewall 141. The second straight body 1322 and the first straight body 1312 may form a surface contact. In one embodiment of the present invention, the second straight body 1322 and the first straight body 1312 may be connected by fasteners. A first mounting hole 1312a may be provided on the first straight body 1312, and a second mounting hole 1322a may be provided on the second straight body 1322. The fasteners may be screws or bolts, etc. During assembly, the end of the motor shaft 221 can be placed inside the first enclosure body 1311 first, and then the second enclosure body 1321 is fastened. Subsequently, fasteners are passed through the second mounting hole 1322a and the first mounting hole 1312a in sequence to connect the second straight body 1322 and the first straight body 1312 together, so that the motor shaft 221 forms an interference fit with the forming protrusion 131 and the pressing part 132, which prevents the motor shaft 221 from shaking in the radial direction and ensures the stability of the connection between the fixing part 130 and the motor shaft 221. Moreover, the pressing part 132 can be installed or removed relative to the forming protrusion 131, which is convenient for cleaning or maintenance. Thus, on the one hand, by having the first enclosing body 1311 and the second enclosing body 1321 relatively enclose the groove sidewall 141 connecting the motor shaft 221, the contact area between the motor shaft 221 and the forming protrusion 131 and the pressing member 132 is increased, thereby effectively ensuring the stability of the connection between the motor shaft 221 and the forming protrusion 131 and the pressing member 132; on the other hand, the second flat body 1322 forms a surface contact with the first flat body 1312, so that the forming protrusion 131 and the pressing member 132 are connected, improving the connection strength between the pressing member 132 and the forming protrusion 131. In an embodiment not shown in the figure, the second flat body 1322 and the first flat body 1312 can also be connected by snap-fit ​​connection or welding. Of course, the second flat body 1322 and the first flat body 1312 can also be connected in a non-surface contact form.

[0045] See also Figure 4 , Figure 5 , Figure 7 and Figure 8The straight limiting portion 1411 may include a first limiting portion 1412 and a second limiting portion 1413. The first limiting portion 1412 may be disposed on the first enclosing body 1311, and the second limiting portion 1413 may be disposed on the second enclosing body 1321, and the second limiting portion 1413 and the first limiting portion 1412 may be disposed opposite to each other. In one embodiment of the present invention, the motor shaft 221 may have a first mating portion 2212 and a second mating portion 2213. The first mating portion 2212 may abut against the first limiting portion 1412, and the second mating portion 2213 may abut against the second limiting portion 1413. The motor shaft 221 may be cylindrical to facilitate processing and manufacturing. The first mating portion 2212 and the second mating portion 2213 may be formed by milling flat from one end of the motor shaft 221 to the other end. The first mating part 2212 may have a first mating surface 2212a and a second mating surface 2212b. The first mating surface 2212a may be perpendicular to the second mating surface 2212b. The first mating surface 2212a may extend into the connecting groove 140 and abut against the first limiting part 1412 to limit the radial wobble of the motor shaft 221. The second mating surface 2212b may abut against the pressing protrusion 131 to limit the axial wobble of the motor shaft 221. The second mating part 2213 may have a third mating surface 2213a and a fourth mating surface 2213b. The third mating surface 2213a may be perpendicular to the fourth mating surface 2213b. The third mating surface 2213a may extend into the connecting groove 140 and abut against the second limiting part 1413 to limit the radial wobble of the motor shaft 221. The fourth mating surface 2213b may abut against the pressing part to limit the axial wobble of the motor shaft 221. The forming protrusion 131 can be disposed on the side plate 150 of the cabinet 10. The forming protrusion 131 and the pressing member 132 can be disposed vertically, with the forming protrusion 131 disposed below and the pressing member 132 disposed above. The first limiting part 1412 can be used to support the motor shaft 221, thereby supporting the external rotor motor 220. In this way, not only is the rotation of the motor shaft 221 better restricted, enhancing the stability of the external rotor motor 220 operation, but it also facilitates processing and manufacturing, improving processing efficiency.

[0046] See also Figure 3 , Figure 4 and Figure 6The pressing member 132 may have an enclosing portion 1323 and a connecting portion 1324. The enclosing portion 1323 may enclose at least a portion of the pressed protrusion 131, and the connecting portion 1324 may be bent and extended from the end of the enclosing portion 1323, and the connecting portion 1324 may form a surface contact with the cabinet 10. In one embodiment of the present invention, the connecting portion 1324 and the cabinet 10 may be connected by fasteners. A third mounting hole 1324a may be provided on the connecting portion 1324, and a fourth mounting hole 160 may be provided on the cabinet 10. The fasteners may be screws or bolts, etc. During assembly, the fasteners pass through the third mounting hole 1324a and the fourth mounting hole 160 in sequence to connect the connecting portion 1324 and the cabinet 10 together, thereby improving the connection strength between the cabinet 10 and the fixing portion 130, and the pressing member 132 can be installed or removed relative to the cabinet 10, which is convenient for cleaning or maintenance. Thus, on the one hand, by enclosing at least a portion of the enclosing portion 1323 and the pressed protrusion 131 to fix the end of the motor shaft 221, the radial wobbling of the motor shaft 221 is prevented, ensuring the stability of the connection between the fixing portion 130 and the motor shaft 221; on the other hand, the connecting portion 1324 forms a surface contact with the cabinet 10, improving the connection strength between the cabinet 10 and the fixing portion 130, effectively absorbing the vibration generated by the external rotor motor 220, thereby reducing the noise of the air handling unit assembly 1. In embodiments not shown in the figures, the connecting portion 1324 and the cabinet 10 can also be connected by snap-fit ​​connection or welding. Of course, the connecting portion 1324 and the cabinet 10 can also be connected in a non-surface contact form.

[0047] See also Figure 2 , Figure 3 , Figure 7 and Figure 8 The end of the motor shaft 221 may have a distal end face 2214 away from the volute 210, and the distal end face 2214 may form surface contact with the inner wall 120 of the cabinet 10. The distal end face 2214 and the inner wall 120 of the cabinet 10 may be connected by welding or gluing to further ensure the stability of the connection between the cabinet 10 and the motor shaft 221. In this way, the contact area between the cabinet 10 and the motor shaft 221 is increased, and the axial movement of the motor shaft 221 is restricted, thereby effectively ensuring the stability of the connection between the cabinet 10 and the motor shaft 221.

[0048] See also Figures 1 to 5The cabinet 10 may have an inwardly protruding portion 170 protruding into the receiving cavity 110, and a fixing portion 130 may be disposed on the inner sidewall 120 of the inwardly protruding portion 170. This not only avoids increasing the space occupied by the air handling unit 1, but also further enhances the strength of the cabinet 10, effectively absorbing the vibration generated by the external rotor motor 220, thereby reducing the noise of the air handling unit 1. In an embodiment not shown in the figures, the cabinet 10 may have an outwardly protruding portion protruding away from the receiving cavity 110, and the fixing portion 130 may be disposed on the inner sidewall 120 of the outwardly protruding portion. This further enhances the strength of the cabinet 10, effectively absorbing the vibration generated by the external rotor motor 220, thereby significantly reducing the noise of the air handling unit 1.

[0049] See also Figure 2 and Figure 7 The motor shaft 221 may have a first end 2215 and a second end 2216. The cabinet 10 may have two oppositely arranged side panels 150. The fixing part 130 may have a first fixing part 133 and a second fixing part 134. The first fixing part 133 and the second fixing part 134 may be respectively disposed on the side panels 150. The first end 2215 may be connected to the first fixing part 133, and the second end 2216 may be connected to the second fixing part 134. In one embodiment of the present invention, the first fixing part 133 may include the above-mentioned pressed protrusion 131 and pressing member 132. The second fixing part 134 may include the above-mentioned pressed protrusion 131 and pressing member 132. Thus, on the one hand, the fixing base of the external rotor motor 220 is transferred from the volute 210 to the two side plates 150 of the cabinet 10, cutting off the transmission path of the vibration generated by the external rotor motor 220 to the volute 210. The first fixing part 133 and the second fixing part 134 will not occupy the area of ​​the air intake area of ​​the fan 20, effectively ensuring the air intake efficiency of the fan 20. On the other hand, the first end 2215 is connected to the first fixing part 133, and the second end 2216 is connected to the second fixing part 134, so that the motor shaft 221 is fixed at both ends. This not only provides stable support for the motor shaft 221, but also effectively avoids the motor shaft 221 from shaking in the axial and radial directions, eliminating the cantilever torque that may cause the external rotor motor 220 to operate unstablely, thereby greatly reducing the eccentricity of the external rotor motor 220 and ensuring the stability of the operation of the external rotor motor 220. In one embodiment of the present invention, the distal end face 2214 of the first end 2215 can abut against a side plate 150, and the distal end face 2214 of the second end 2216 can abut against another side plate 150. This restricts the movement of the motor shaft 221 in the axial direction, thereby effectively ensuring the stability of the operation of the external rotor motor 220.

[0050] In an embodiment not shown in the figure, the motor shaft 221 can be connected to the cabinet 10 at only one end through the fixing part 130. The motor shaft 221 and the fixing part 130 have a certain contact length to ensure the stability of the operation of the external rotor motor 220.

[0051] According to another aspect of the present invention, a range hood is provided. The range hood may include a smoke collection hood (not shown in the figure) and a fan housing assembly 1 as described above. The smoke collection hood may be disposed below the fan housing assembly 1. The smoke collection hood may be connected to the cabinet 10. When the external rotor motor 220 rotates, it can create a negative pressure within the receiving cavity 110, thereby drawing oil fumes from the external environment into the receiving cavity 110 through the smoke collection hood, and then allowing the oil fumes in the receiving cavity 110 to enter the volute 210 and be discharged through the air outlet of the volute 210. The range hood of the present invention includes the fan housing assembly 1 as described above. Since the fan housing assembly 1 has the aforementioned beneficial effects, the range hood including the fan housing assembly 1 as described above will necessarily also have the aforementioned beneficial effects.

[0052] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0053] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0055] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0056] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blower unit assembly, characterized in that, include: The cabinet body encloses and forms a receiving cavity; as well as A fan having a volute and an external rotor motor, the volute being located within the receiving cavity and the volute enclosing a mounting cavity, the external rotor motor being at least partially located within the mounting cavity; The cabinet has a fixing part on its inner side wall, and the external rotor motor has a motor shaft, the end of which is connected to the fixing part.

2. The air handling unit assembly according to claim 1, characterized in that, The fixing part and the cabinet body form a connecting groove, and the end of the motor shaft is embedded in the connecting groove.

3. The air handling unit assembly according to claim 2, characterized in that, The fixing part includes a pressed protrusion and a pressing member. The pressed protrusion protrudes from the inner sidewall of the cabinet toward the receiving cavity and is configured as an enclosed shape with an opening. The pressing member covers the opening and at least a portion of the pressing member and at least a portion of the pressed protrusion enclose each other to form the groove sidewall of the connecting groove.

4. The air handling unit assembly according to claim 3, characterized in that, The groove sidewall has a flat limiting part, and the end of the motor shaft has a flat fitting part that abuts against the flat limiting part.

5. The air handling unit assembly according to claim 4, characterized in that, The forming protrusion has a first enclosing body and a first flat body, the first flat body extending straight from both sides of the first enclosing body; the forming member has a second enclosing body and a second flat body, the second flat body extending straight from both sides of the second enclosing body; the second enclosing body and the first enclosing body are joined to form the groove sidewall, and the second flat body and the first flat body are in surface contact.

6. The air handling unit assembly according to claim 5, characterized in that, The straight limiting part includes a first limiting part and a second limiting part. The first limiting part is disposed on the first enclosing body, and the second limiting part is disposed on the second enclosing body, with the second limiting part being disposed opposite to the first limiting part.

7. The air handling unit assembly according to claim 3, characterized in that, The pressing member has an enclosing portion and a connecting portion. The enclosing portion encloses at least a portion of the pressing protrusion. The connecting portion extends from the end of the enclosing portion by bending and forms a surface contact with the cabinet body.

8. The air handling unit assembly according to claim 2, characterized in that, The end of the motor shaft has a distal end face away from the volute, and the distal end face forms a surface contact with the inner sidewall of the cabinet.

9. The air handling unit assembly according to claim 1, characterized in that, The cabinet has an inner protrusion that protrudes into the receiving cavity, and the fixing part is disposed on the inner sidewall of the inner protrusion.

10. The air handling unit assembly according to any one of claims 1-9, characterized in that, The motor shaft has a first end and a second end, the cabinet has two side plates arranged opposite to each other, and the fixing part has a first fixing part and a second fixing part. The first fixing part and the second fixing part are respectively arranged on the two side plates, the first end is connected to the first fixing part, and the second end is connected to the second fixing part.

11. A range hood, characterized in that, It includes a smoke hood and a fan assembly as described in any one of claims 1 to 10, wherein the smoke hood is disposed below the fan assembly.

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