Housing device with functions, electric motor, cross-flow fan component and volute fan

Abstract

The application discloses a shell device with functions, a motor, a cross-flow fan part and a volute, which comprises an A shell, a stator part and a B shell; the A shell comprises an A bearing mounting part, a permanent magnet mounting part, a blade mounting part and an A shell mounting part; the A bearing mounting part is located at the center of the A shell; the permanent magnet mounting part is located at the periphery of the A bearing mounting part; the blade mounting part is located at the periphery of the permanent magnet mounting part; the A shell mounting part is located at the periphery of the permanent magnet mounting part; a B bearing mounting part is located at the center of the B shell; a B shell mounting part is located at the periphery of the B bearing mounting part; the stator part comprises a central shaft and electromagnets; the electromagnets are distributed around the central shaft; the central shaft is fixedly connected with the electromagnets; one end of the central shaft penetrates through the A bearing; the other end of the central shaft penetrates through the B bearing; the A shell mounting part is connected with the B shell mounting part in correspondence, the A shell and the B shell are fixed into an integral whole, an accommodating space is formed in the integral whole, and the permanent magnet is located in the accommodating space.

Description

Technical Field

[0001] This application belongs to the field of motor technology, and particularly relates to motors and fans used in range hoods. Background Technology

[0002] A cross-flow fan, also known as a cross-flow fan, was first proposed by the French engineer Mortier in 1892. Its impeller is a multi-bladed, long cylindrical shape with forward-curving multi-bladed blades. When the impeller rotates, airflow enters the blade cascade from the open end of the impeller, passes through the interior of the impeller, and is discharged into the volute from the other side of the blade cascade, forming the working airflow.

[0003] Impeller materials are generally aluminum alloy or engineering plastics. Aluminum alloy impellers are high in strength, lightweight, and heat resistant, and can maintain stable operation for a long time without deformation. They are generally used in high-power applications. Plastic impellers are injection molded and then ultrasonically welded. They are generally used in low-power, low-speed applications and have a larger diameter.

[0004] The air duct is typically made of stamped sheet metal, but can also be cast from plastic or aluminum alloy. The streamlined design of the casing effectively reduces airflow loss and significantly improves the fan's efficiency.

[0005] The electric motor is the power component of the cross-flow fan. It can be powered by AC or DC. AC power mainly includes shaded-pole motors and capacitor-start motors, while DC power is supplied by brushless DC motors. The drive motor is generally flexibly mounted to the impeller and fixed to the air duct.

[0006] In traditional manufacturing processes, the impeller, air duct, and motor are separate components, designed and manufactured separately before being assembled into a complete machine. This approach requires strict tolerance control, and the rotating mechanism often suffers from low efficiency due to non-compliance with tolerance standards. Tolerance control incurs significant management costs, which is difficult to implement in the cost-sensitive white goods industry.

[0007] Cold pressing of steel sheets is a processing method that uses mechanical pressure at room temperature to plastically deform metal blanks, thereby obtaining the desired shape and size. This process is widely used in automotive parts, fasteners, and irregularly shaped parts, and features high precision, high efficiency, and high material utilization, but its production cost is relatively high.

[0008] Multiple stamping forming is a processing method that uses multiple processes to repeatedly stamp and bend metal sheets to gradually achieve complex shapes. This process is widely used in the automotive, home appliance, and aerospace industries, characterized by high precision and high efficiency. Process principle: Material deformation: During stamping and bending, the metal sheet undergoes plastic deformation, gradually approaching the final shape. Die function: Multi-station dies sequentially complete processes such as punching, bending, and stretching, with each process achieving partial deformation.

[0009] In the existing technology, the cross-flow fans used in range hoods usually use an internal rotor motor. The rotation of the internal rotor drives the external impeller to rotate, and a connecting mechanism needs to be set between the impeller and the internal rotor.

[0010] In the existing technology, some cross-flow fans used in range hoods also use external rotor motors. They are usually equipped with a drive shaft to transmit the rotation of the external rotor to the impeller.

[0011] With the development of science and technology, the market has increasingly higher requirements for the efficiency of range hoods, air conditioner fans and other complete machines, and increasingly lower requirements for failure rates. The efficiency or failure rate of traditional internal rotor motors or external rotor motors are difficult to meet the increasingly stringent national energy consumption standards, and also difficult to meet the 6-year or 10-year after-sales guarantee for motors that some manufacturers have proposed. These pressures have put pressure on motor manufacturers, requiring them to develop high-efficiency and low-failure motors. Summary of the Invention

[0012] This application proposes to integrate functional components other than the motor into the motor housing, thereby reducing the number of parts in the entire machine, minimizing installation errors, improving the concentricity of rotating parts, and significantly increasing overall machine efficiency. By forming the housing through integral stamping and creating multiple functional zones through multiple stamping processes, the number of internal parts of the motor is drastically reduced. Although the manufacturing process of the rotating housing is more complex and costly, the significant reduction in internal parts and simplified manufacturing process results in a substantial decrease in overall production costs. This application has the capability to improve the efficiency of the entire white goods industry, reducing energy consumption in sectors such as air conditioners and range hoods by at least 1-5 percentage points, which has significant industrial implications.

[0013] A functional housing device for rotating the housing of an external rotor motor includes an A bearing mounting part, a permanent magnet mounting part, and a blade mounting part; the A bearing mounting part is located at the center of the A housing and is used to mount the A bearing; the permanent magnet mounting part is located around the A bearing mounting part and is used to mount the permanent magnet of the external rotor motor; the blade mounting part is located around the permanent magnet mounting part and is used to mount external blades.

[0014] Alternatively, the blade mounting section may include annularly arranged blade mounting holes for inserting external wind turbine blades.

[0015] It can be that the center of the bearing mounting part A includes a hole A through which the central shaft of the stator component passes; the bearing mounting part A protrudes outward to form a first step portion, which is used to place the bearing; the permanent magnet mounting part protrudes outward to form a second step portion, which is used to place the permanent magnet, and the permanent magnet is arranged in a ring in the permanent magnet mounting part.

[0016] Alternatively, the aforementioned functional housing device may be formed by pressing metal sheet; the aforementioned blade mounting portion may include pressed fan blades.

[0017] Alternatively, a transition section can be provided between the bearing mounting section A and the permanent magnet mounting section, with the outer diameter of the transition section gradually changing from the diameter of the bearing mounting section A to the diameter of the permanent magnet mounting section.

[0018] It can be that the blade mounting part and the permanent magnet mounting part are provided with a buffer part, the buffer part including at least two bending areas, the bending areas changing the angle between the plate and the horizontal plane in the center section.

[0019] An electric motor includes a housing A, a housing B, and a stator assembly; housing A is the aforementioned housing assembly; bearing A and a permanent magnet are installed inside housing A; housing B includes a bearing B mounting portion and a housing B mounting portion; bearing B is disposed in bearing B mounting portion; the stator assembly includes a central shaft and an electromagnet; the electromagnet is distributed around the central shaft; the central shaft is fixedly connected to the electromagnet; one end of the central shaft passes through the central hole of bearing A; the other end of the central shaft passes through the central hole of bearing B.

[0020] It is possible that the aforementioned housing A includes a housing A mounting part; the housing A mounting part is correspondingly connected to the housing B mounting part, the housing A and housing B are fixed as a whole, and an internal accommodating space is formed, in which the permanent magnet is located; the housing A mounting part includes an A mounting through hole; the housing B mounting part includes a B mounting through hole; the housing A mounting through hole and the housing B mounting through hole are fixed by fasteners.

[0021] Alternatively, the center of the B bearing mounting portion may include a B hole through which the central shaft of the stator component passes; the B bearing mounting portion is located at the center of the B housing, and the B bearing mounting portion protrudes outward to form a receiving space; the B bearing is disposed in the receiving space.

[0022] A cross-flow fan component includes: an impeller and an external rotor motor; the external rotor motor is the aforementioned motor; the impeller includes a B support ring and at least three blades, the B support ring includes annularly arranged B mounting and fixing portions, one end of each blade is fixedly connected to the B mounting and fixing portions, and the other end of each blade is fixedly connected to a blade mounting portion of the A housing; or the impeller includes an A support ring, a B support ring, and at least three blades, the A support ring includes annularly arranged A mounting and fixing portions; the B support ring includes annularly arranged B mounting and fixing portions, one end of each blade is fixedly connected to the A mounting and fixing portions, the other end of each blade is fixedly connected to the B mounting and fixing portions, and the middle portion of each blade passes through the blade mounting portion of the A housing.

[0023] A volute fan includes the aforementioned cross-flow fan component, and further includes a volute, a support component A, and a support component B. The cross-flow fan component is disposed inside the volute. Support component A is installed on one side of the volute. Support component B is installed on the other side of the volute. Support component A has a fixed component A at its center, and one end of the central axis of the stator component is connected to the fixed component A. Support component B has a fixed component B at its center, and the other end of the central axis of the stator component is connected to the fixed component B.

[0024] It can be that support component A or support component B includes an integrally molded support wheel-shaped device, a shock-absorbing pad, and a locking device, wherein the center of the support wheel-shaped device includes a shock-absorbing pad receiving space, and the shock-absorbing pad is placed in the receiving space; or the locking device is fixed to the end of the central shaft by a tight connection; or the central hole of the shock-absorbing pad is a non-circular hole; or the locking device is fixed to the end of the central shaft by a threaded connection; or the support wheel-shaped device of support component A includes a volute adapter, the volute adapter corresponding to the shape of the volute air duct, for sealing the volute air duct; or the support wheel-shaped device includes 4 spokes, and the shock-absorbing pad receiving space is located at the center of the spoke convergence; or the central shaft of the stator component passes through the locking device and then through the central hole of the shock-absorbing pad; or the central shaft of the stator component passes through the central hole of the shock-absorbing pad and then through the central hole of the locking device.

[0025] One of the technical effects of the above-mentioned technical solution is that it integrates the outer shell and the rotor into one unit. The outer shell is part of the motor housing and also serves as the motor rotor, thus saving on structural components.

[0026] One of the technical advantages of the above solution is that it eliminates various intermediate components in the transmission route; the rotor, which is directly driven, is the outer casing, and the casing directly houses the mounting positions for fixing the fan blades. This not only simplifies the transmission route but also increases the space available for the permanent magnet because it eliminates the need for a separate transmission route.

[0027] One of the technical advantages of the above-mentioned technical solution is that, apart from the blades, no core rotating component of the motor is exposed in the rotating parts. The central shaft is fixed, which reduces the risk of oil contamination in the rotating parts when used in range hoods, thus enhancing the reliability of the product.

[0028] One of the technical effects of the above-mentioned technical solution is that the A bearing mounting part is located at the center of the A housing, which facilitates the overall fixing of the outer rotor, ensures the coaxiality of the motor as a whole, and makes the rotation performance more stable and reliable.

[0029] One of the technical effects of the above-mentioned technical solution is that the permanent magnet mounting part is also set at the center of the A shell, and the downward recessed hole maximizes the space of the permanent magnet mounting part; under the same size, the driving capability of the motor can be further expanded.

[0030] One of the technical advantages of the above-mentioned solution is the annular arrangement of blade mounting holes, which allows for the vertical insertion of wind turbine blades. With the blade mounting section positioned at the center of housing A, the overall motor operates more stably and reliably during rotation.

[0031] One of the technical advantages of the above-mentioned technical solution is that the permanent magnet is directly bonded and fixed inside the A shell, which saves space and allows the space to be used as much as possible for components that can provide energy, thereby further improving efficiency.

[0032] One of the technical effects of the above-mentioned technical solution is that the fixed connection between housing A and housing B makes the core components of the motor more stable and the sealing performance is higher. The core rotating parts of the motor are not affected by external contaminants, thus improving their lifespan and reliability.

[0033] One of the technical effects of the above-mentioned technical solution is that the impeller, including support ring A and support ring B, makes the support of the entire impeller more balanced and the fan rotation more stable.

[0034] One of the technical effects of the above-mentioned technical solution is that support frames are provided on the two volute sidewalls, and the centers of the two support frames are respectively fixedly connected to the two ends of the central shaft of the external rotor motor, ensuring reliable connection and smooth overall operation.

[0035] One of the technical effects of the above-mentioned technical solution is that the bearing mounting part, permanent magnet mounting part, and blade mounting part are integrated into a single component. The fit tolerance between each mounting part is determined by the precision of the mold, which can greatly improve concentricity. This results in a significant increase in the efficiency of the motor using this component, and the efficiency will not change during long-term operation.

[0036] One of the technical effects of the above technical solution is that the blade mounting holes 0131 can be multiple, concentrically distributed around the center, and their precision is determined by the mold.

[0037] One of the technical effects of the above-mentioned technical solution is that the functional housing device is formed by pressing metal sheet; the blade mounting part can be directly pressed into fan blades, such as ceiling fans, fans, ventilation fans and other equipment, which greatly reduces the manpower required in the production process of these products and greatly reduces the overall cost of the products.

[0038] One of the technical effects of the above-mentioned technical solution is that the diameter difference between the bearing mounting part and the permanent magnet mounting part is large. The transition part is set up, which reduces the probability of stamping failure and improves the yield.

[0039] One of the technical effects of the above-mentioned technical solution is that the diameter difference between the bearing mounting part and the permanent magnet mounting part is large. The transition part is set up, which reduces the probability of stamping failure and improves the yield.

[0040] One of the technical effects of the above-mentioned technical solution is to reduce the impact of the blades on the motor body. The buffer section can significantly improve the operational stability and lifespan of the product. Attached Figure Description

[0041] Figure 1 A schematic diagram of a three-dimensional view of Example 1; Figure 2 A schematic diagram of the front view of Embodiment 1; Figure 3 A schematic diagram of the top view of Embodiment 1; Figure 4 A schematic diagram of the centerline cross-sectional view of Example 1; Figure 5 A schematic diagram of a perspective view of Example 2; Figure 6 A schematic diagram of the exploded perspective view of Example 2; Figure 7 A schematic diagram of a three-dimensional view of shell A in Embodiment 2; Figure 8 A schematic diagram of the exploded perspective view of shell A in Example 2; Figure 9 A schematic diagram of the cross-sectional view of shell A in Example 2; Figure 10 A schematic diagram of the exploded perspective view of shell B in Example 2; Figure 11 A schematic diagram of a three-dimensional view of Example 3; Figure 12 A schematic diagram of the exploded perspective view of Example 3; Figure 13 A schematic diagram of a perspective view of Example 4; Figure 14 A schematic diagram of a perspective view of removing the volute in Example 4; Figure 15 A schematic diagram of a perspective view of Example 5; Figure 16 A schematic diagram of the exploded perspective view of Example 5; Figure 17 A schematic diagram of the exploded perspective view of Example 5; Figure 18 A schematic diagram of the exploded perspective view of Example 5; Figure 19 A schematic diagram of a perspective view of support component A in Example 5. Detailed Implementation

[0042] The content of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that the following description is of preferred embodiments of this application and does not constitute any limitation on this application. The description of the preferred embodiments is merely an explanation of the general principles of this application. The use of terms such as "first," "second," and "A," "B" in this application is for ease of explanation only and does not represent a temporal or spatial order. The combinations of letters and numbers "S," "M," and "H" in this application are also for ease of explanation, and their specific meanings are determined by the specific content they refer to.

[0043] like Figure 1 A schematic diagram of a three-dimensional view of Example 1.

[0044] like Figure 1 A functional housing device for rotating the housing of an external rotor motor includes an A bearing mounting part 0110, a permanent magnet mounting part 0120, and a blade mounting part 0130. The A bearing mounting part is located at the center of the A housing and is used to mount the A bearing. The permanent magnet mounting part is located around the A bearing mounting part and is used to mount the permanent magnet of the external rotor motor. The blade mounting part is located around the permanent magnet mounting part and is used to mount external blades.

[0045] The permanent magnet can be mounted on the permanent magnet mounting part 0120 by means of a mounting ring, or by means of engineering adhesive.

[0046] The bearing can be installed by tightly mounting bearing A mounting part 0110, or by bonding with engineering adhesive.

[0047] By integrating the bearing mounting part 0110, permanent magnet mounting part 0120, and blade mounting part 0130 into a single component, the fit tolerance between each mounting part is determined by the precision of the mold, which can significantly improve concentricity. This results in a significant increase in the efficiency of the motor using this component, and the efficiency will not change during long-term operation.

[0048] Alternatively, the blade mounting section may include annularly arranged blade mounting holes 0131, which are used to insert external wind turbine blades, such as wind turbine blades.

[0049] There can be multiple blade mounting holes 0131, which are concentrically distributed around the center, and their precision is determined by the mold.

[0050] like Figure 2 A schematic diagram of the front view of Embodiment 1.

[0051] It can be that the center of the bearing mounting part A includes a hole A 0111, through which the central shaft of the stator component passes; the bearing mounting part A protrudes outward to form a first step part 0210, which is used to place the bearing; the permanent magnet mounting part protrudes outward to form a second step part 0220, which is used to place the permanent magnet, and the permanent magnet is arranged in a ring in the permanent magnet mounting part.

[0052] Alternatively, the aforementioned functional housing device may be formed by pressing metal sheet; the aforementioned blade mounting part may include pressed fan blades, such as those of ceiling fans, fans, ventilation fans, etc., where the fan blades are directly made.

[0053] like Figure 3 A schematic diagram of the top view of Embodiment 1. Figure 3 Hole A 0111 is located in the center and also includes four A mounting through holes 0310; the four A mounting through holes are concentrically distributed at equal angles.

[0054] like Figure 4 A schematic diagram of the centerline cross-sectional view of Example 1. (See attached diagram.) Figure 4 It is formed by stamping a complete steel plate. Due to the large area of ​​the steel plate, the stamping process requires a large amount of deformation and needs to be formed by stamping multiple times. For example, the A bearing mounting part 0410 is stamped first, and then the permanent magnet mounting part 0420 is stamped.

[0055] Because of the large diameter difference between the bearing mounting section and the permanent magnet mounting section, a transition section is provided, which is formed by stamping.

[0056] To mitigate the impact of the blades on the motor body, a buffer section 0435 is provided. The buffer section 0435 includes two or more bending areas, as shown in Figure A bending area 0451, B bending area 0452, and C bending area 0453. The bending areas are formed by stamping.

[0057] like Figure 5 A schematic diagram of a perspective view of Embodiment 2. (See attached diagram.) Figure 6 A schematic diagram of the exploded perspective view of Example 2. (See attached diagram.) Figure 7 A schematic diagram of a perspective view of shell A in Embodiment 2. Figure 8 A schematic diagram of an exploded perspective view of shell A in Embodiment 2. Figure 9 A schematic diagram of a cross-sectional view of shell A in Embodiment 2. Figure 10 A schematic diagram of the exploded perspective view of shell B in Example 2.

[0058] like Figure 5 , Figure 6 , Figure 7An external rotor motor includes an A housing 0610, a B housing 0620, and a stator component 0630; an A bearing 0710 and a permanent magnet 0720 are installed inside the A housing; the B housing includes a B bearing mounting part 0621 and a B housing mounting part 0622; a B bearing 1010 is disposed in the B bearing mounting part; the stator component includes a central shaft 0631 and an electromagnet 0632; the electromagnets are distributed around the central shaft; the central shaft is fixedly connected to the electromagnets; one end of the central shaft passes through the central hole of the A bearing; the other end of the central shaft passes through the central hole of the B bearing.

[0059] like Figure 7 The aforementioned housing A includes a housing A mounting portion 0730; the housing A mounting portion is correspondingly connected to the housing B mounting portion, and the housing A and housing B are fixed as a whole, forming an internal accommodating space, within which the permanent magnet is located; the aforementioned housing A mounting portion includes a mounting through hole 0731; as Figure 10 The aforementioned housing mounting part B includes a B mounting through hole 1030; the aforementioned mounting through hole A and mounting through hole B are fixed together by fasteners.

[0060] Alternatively, the center of the B bearing mounting part may include a B hole 1040 through which the central shaft of the stator component passes; the B bearing mounting part is located at the center of the B housing, and the B bearing mounting part protrudes outward to form a receiving space; the B bearing is disposed in the receiving space.

[0061] like Figure 9 The 0720 permanent magnet is attached inside the permanent magnet mounting section and fixed with glue. The overall structure is simple with few parts. During long-term operation, the structure is not easily deformed and does not reduce operating efficiency.

[0062] like Figure 11 A schematic diagram of a perspective view of Embodiment 3. Figure 12 A schematic diagram of the exploded perspective view of Example 3.

[0063] like Figure 11 ,like Figure 12 A cross-flow fan component includes: an impeller 1210 and an external rotor motor 1110; the impeller includes a B support ring 1120 and at least three blades 1151, the B support ring includes a B mounting and fixing part 1141 arranged in a ring, one end of the blades is fixedly connected to the B mounting and fixing part, and the other end of the blades is fixedly connected to the blade mounting part of the A housing.

[0064] Mounting part B includes concentrically arranged mounting holes, through which the blade is fixedly connected to mounting part B. By cooperating with the blade mounting part of housing A, two support points are provided for the blade.

[0065] Alternatively, the impeller may also include an A support ring 1130 and at least three blades. The A support ring includes an A mounting and fixing part arranged in an annular pattern; the B support ring includes a B mounting and fixing part arranged in an annular pattern. One end of the blade is fixedly connected to the A mounting and fixing part, and the other end of the blade is fixedly connected to the B mounting and fixing part. The middle part of the blade passes through the blade mounting part of the A housing.

[0066] Mounting part A includes concentrically arranged mounting holes, through which the blade is fixedly connected to mounting part A. By cooperating with the blade mounting parts of housing A, mounting part A, and mounting part B, three support points are provided for the blade.

[0067] like Figure 13 A schematic diagram of a perspective view of Example 4. Figure 14 A schematic diagram of a perspective view of removing the volute in Example 4.

[0068] A volute fan includes a cross-flow fan component; it includes a volute 1310, an A support component 1320, and a B support component 1410; the cross-flow fan component 1420 is disposed inside the volute; the A support component is installed on one side of the volute; the B support component is installed on the other side of the volute; the center of the A support component includes an A fixing component 1430, and one end of the central shaft of the stator component is connected to the A fixing component; the center of the B support component includes a B fixing component, and the other end of the central shaft of the stator component is connected to the B fixing component.

[0069] like Figure 15 A schematic diagram of a perspective view of Example 5. (See attached diagram.) Figure 16 A schematic diagram of the exploded perspective view of Example 5. (See attached diagram.) Figure 17 A schematic diagram of the exploded perspective view of Example 5. (See attached diagram.) Figure 18 A schematic diagram of the exploded perspective view of Example 5.

[0070] Support component A 1610 or support component B 1620 includes an integrally molded support wheel-shaped device, a shock-absorbing pad, and a locking device.

[0071] like Figure 17 The B support component 1620 includes an integrally pressed support wheel-shaped device 1710, a shock-absorbing pad 1720, and a locking device 1730.

[0072] like Figure 18 The center of the aforementioned support wheel-shaped device includes a shock-absorbing pad receiving space 1820, and the aforementioned shock-absorbing pad 1720 is placed in the receiving space.

[0073] The locking device 1730 is fixed to the end of the central shaft by a tight connection; the center hole of the shock-absorbing pad may be a non-circular hole; the locking device may be fixed to the end of the central shaft by a threaded connection.

[0074] like Figure 19 A schematic diagram of the exploded perspective view of support component A in Example 5.

[0075] A support component includes a volute adapter 1920, which corresponds to the shape of the volute air duct and is used to close the volute air duct; or the support wheel includes four spokes 1920, and the shock-absorbing pad is located at the center of the spokes; or the central shaft of the stator component passes through the locking device and then through the central hole of the shock-absorbing pad; or the central shaft of the stator component passes through the central hole of the shock-absorbing pad and then through the central hole of the locking device.

[0076] While this application has been described and illustrated with reference to preferred embodiments and several alternatives, it is not intended to be limited to the specific descriptions herein. Other alternatives or equivalent components may also be used to practice this application.

Claims

1. A functional housing device for rotating the housing of an external rotor motor, characterized in that, Includes bearing mounting section A, permanent magnet mounting section, and blade mounting section; The bearing mounting section A is located at the center of housing A, and is used to mount bearing A. The permanent magnet mounting section is located outside the bearing A mounting section, and is used to mount the permanent magnet of the external rotor motor; The blade mounting section is located outside the permanent magnet mounting section and is used to mount external blades.

2. The functional housing device according to claim 1, characterized in that, The blade mounting section includes annularly arranged blade mounting holes for inserting external wind turbine blades.

3. The functional housing device according to claim 1, characterized in that, The bearing mounting section A includes a hole A through which the central shaft of the stator component passes; The bearing mounting portion A protrudes outward to form a first step portion, which is used to place the bearing. The permanent magnet mounting portion protrudes outward to form a second step portion, which is used to place the permanent magnet. The permanent magnets are arranged in a ring on the permanent magnet mounting portion.

4. The functional housing device according to claim 1, characterized in that, The functional housing device is formed by pressing metal sheet; The blade mounting section includes a pressed-molded fan blade; Alternatively, a transition section may be provided between the bearing mounting section A and the permanent magnet mounting section, with the outer diameter of the transition section gradually changing from the diameter of the bearing mounting section A to the diameter of the permanent magnet mounting section. The blade mounting section and the permanent magnet mounting section are provided with a buffer section, which includes at least two bending zones. The bending zones change the angle between the plate and the horizontal plane in the central section.

5. An electric motor, characterized in that, Includes housing A, housing B, and stator components; A housing is the housing device as described in any one of claims 1 to 4; A bearing and a permanent magnet are installed inside A housing. The B housing includes a B bearing mounting section and a B housing mounting section; the B bearing mounting section contains the B bearing. The stator components include a central shaft and electromagnets; the electromagnets are distributed around the central shaft; the central shaft and the electromagnets are fixedly connected. One end of the central shaft passes through the central hole of bearing A; the other end of the central shaft passes through the central hole of bearing B.

6. The electric motor according to claim 5, characterized in that, The A housing includes an A housing mounting part; the A housing mounting part is correspondingly connected to the B housing mounting part, and the A housing and the B housing are fixed into a whole, forming an internal accommodating space, and the permanent magnet is located in the accommodating space; The A housing mounting part includes an A mounting through hole; the B housing mounting part includes a B mounting through hole; the A mounting through hole and the B mounting through hole are fixed together by fasteners.

7. The electric motor according to claim 5 or 6, characterized in that, The center of the bearing mounting section includes a hole B, through which the central shaft of the stator component passes; The B bearing mounting part is located at the center of the B housing, and the B bearing mounting part protrudes outward to form a receiving space; Bearing B is disposed in the receiving space.

8. A cross-flow fan component, characterized in that, include: Impeller, external rotor motor; The external rotor motor is the external rotor motor according to any one of claims 5 to 7; The impeller includes a B support ring and at least three blades. The B support ring includes a B mounting and fixing part arranged in a ring. One end of the blade is fixedly connected to the B mounting and fixing part, and the other end of the blade is fixedly connected to the blade mounting part of the A shell. Alternatively, the impeller may include an A support ring, a B support ring, and at least three blades. The A support ring includes an A mounting and fixing part arranged in an annular pattern; the B support ring includes a B mounting and fixing part arranged in an annular pattern. One end of each blade is fixedly connected to the A mounting and fixing part, and the other end of each blade is fixedly connected to the B mounting and fixing part. The middle part of each blade passes through the blade mounting part of the A housing.

9. A volute fan, characterized in that, Includes the cross-flow fan component as described in claim 8; also includes a volute, A support component, and B support component; The cross-flow fan component is disposed inside the volute; Support component A is installed on one side of the volute; support component B is installed on the other side of the volute. The center of support component A includes fixed component A, and one end of the central axis of stator component A is connected to fixed component A. The center of the B support component includes the B fixing component, and the other end of the central axis of the stator component is connected to the B fixing component.

10. The volute fan according to claim 9, characterized in that, Support component A or support component B includes an integrally pressed support wheel-shaped device, a shock-absorbing pad, and a locking device. The center of the support wheel-shaped device includes a shock-absorbing pad accommodating space, and the shock-absorbing pad is placed in the accommodating space. Alternatively, the locking device may be fixed to the end of the central shaft by a tight connection; Or the center hole of the shock-absorbing pad is not circular; Alternatively, the locking device may be fixed to the end of the central shaft via a threaded connection; Or the support wheel-shaped device of support component A includes a volute adapter, the volute adapter corresponding to the shape of the volute air duct, for sealing the volute air duct; The support wheel-shaped device may include 4 spokes, and the shock-absorbing pad accommodating space is located at the center of the spoke convergence; Alternatively, the central shaft of the stator component passes through the locking device and then through the central hole of the shock-absorbing pad; Alternatively, the central shaft of the stator component passes through the central hole of the shock-absorbing pad and then through the central hole of the locking device.

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