Volute motor

Abstract

A volute motor comprises a volute upper cover, a movable impeller, a volute lower cover, a driving assembly and a protective cover, the movable impeller is arranged in a first containing space formed by the volute upper cover and the volute lower cover, a concave cavity is formed in the middle of the volute lower cover, a supporting shaft used for arranging the driving assembly is arranged in the middle of the concave cavity, and the protective cover is arranged on the volute lower cover. The concave cavity and the protecting cover form a second containing space, the driving assembly is arranged in the second containing space and installed on the supporting shaft, and the power output end of the driving assembly penetrates through a shaft hole in the middle of the supporting shaft to be connected with the movable impeller. The volute has the advantages that the supporting shaft used for installing the driving assembly and the volute lower cover are designed in an integrated mode, an independent support is not needed to install the driving assembly, cost is effectively reduced on the premise that connection reliability, firmness, mechanical strength and assembly precision are guaranteed, and meanwhile the requirement for a small-size structure can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a volute motor. Background Art

[0002] Existing volute motors require independent brackets to install the drive components, which complicates the overall structure of the motor and affects the overall structural strength and installation accuracy. It is difficult to miniaturize the motor while maintaining good performance, and it is difficult to meet small size requirements. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a volute motor.

[0004] The utility model adopts the following technical solutions:

[0005] A volute motor comprises: a volute upper cover, a movable impeller, a volute lower cover, a drive assembly and a protective cover, wherein the movable impeller is arranged in a first accommodating space formed by the volute upper cover and the volute lower cover, a concave cavity is provided in the middle of the volute lower cover, and a support shaft for arranging the drive assembly is provided in the middle of the concave cavity, the protective cover is provided on the volute lower cover, the concave cavity and the protective cover form a second accommodating space, the drive assembly is arranged in the second accommodating space and installed on the support shaft, and the power output end of the drive assembly is connected to the movable impeller through the shaft hole in the middle of the support shaft.

[0006] Optionally, an air inlet is provided on the end surface of the volute upper cover, a first outlet air duct is provided on the side wall of the volute upper cover, and a second outlet air duct is provided on the side wall of the volute lower cover, and the first outlet air duct and the second outlet air duct are combined to form an air outlet.

[0007] Optionally, the side wall of the volute upper cover is provided with a buckle, and the side wall of the volute lower cover is provided with a protrusion that cooperates with the buckle.

[0008] Optionally, the drive assembly includes: a stator, a magnet, a rotor and a drive plate, the stator is sleeved on the support shaft, the rotor includes a cover body and an output shaft, the output shaft is arranged at the center of the cover body, the magnet is arranged on the inner wall of the cover body, the cover body is arranged on the outside of the stator, the output shaft passes through the axial hole in the center of the support shaft and is connected to the impeller, and the drive plate is arranged in the concave cavity and electrically connected to the stator.

[0009] Optionally, a balancing ring is provided on the cover of the rotor.

[0010] Optionally, the outer wall of the cover is provided with an inner recess for matching with the balance ring.

[0011] Optionally, a screw hole is provided on the volute lower cover, and a screw seat matching the screw hole is provided on the protective cover.

[0012] Optionally, a bearing chamber is provided in the shaft hole in the middle of the support shaft, and a bearing that cooperates with the output shaft is provided in the bearing chamber.

[0013] Optionally, the impeller includes: a pad, an arc-shaped top plate and a plurality of blades arranged between the pad and the arc-shaped top plate, the center of the pad is connected to the power output end of the drive assembly, the blades are arranged in a circular array at the edge of the pad with the center of the pad as the center of the circle, and an air inlet hole is opened in the middle of the arc-shaped top plate.

[0014] The beneficial effect of the present invention is that the support shaft for installing the drive assembly is integrated with the lower cover of the volute, and there is no need to set up an independent bracket to install the drive assembly. It effectively reduces costs while ensuring connection reliability, firmness, mechanical strength and assembly accuracy, and can meet the requirements of small-size structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model in a split state;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the combined structure of the volute lower cover and the stator of the utility model;

[0018] Figure 4 This is a schematic diagram of the rotor structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the end surface structure of the volute lower cover of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the impeller of the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0022] like Figure 1-3As shown, a volute motor includes: a volute upper cover 1, a movable impeller 2, a volute lower cover 3, a drive assembly 4 and a protective cover 5. The movable impeller 2 is arranged in a first accommodating space 6 formed by the volute upper cover 1 and the volute lower cover 3. A concave cavity 31 is provided in the middle of the volute lower cover 3. A support shaft 32 for arranging the drive assembly 4 is provided in the middle of the concave cavity 31. The protective cover 5 is arranged on the volute lower cover 3. The concave cavity 31 and the protective cover 5 form a second accommodating space 7. The drive assembly 4 is arranged in the second accommodating space 7 and mounted on the support shaft 32. The power output end of the drive assembly 4 is connected to the movable impeller 2 through the shaft hole 321 in the middle of the support shaft 32. When working, the drive assembly 4 receives an electrical signal to drive the movable impeller 2 to rotate, sucking gas into the first accommodating space 6 and then blowing it out at high speed. The support shaft 32 is integrated with the volute lower cover 3 to enhance the connection reliability and firmness between the motor and the volute, thereby improving the mechanical strength of the motor and ensuring assembly accuracy, thereby guaranteeing the concentricity requirements of the motor rotor 43 and the impeller 2 after assembly.

[0023] like Figure 1 As shown, the volute upper cover 1 has an air inlet 11 formed on its end face, a first outlet duct 12 formed on its sidewall, and a second outlet duct 33 formed on its sidewall. The first and second outlet ducts 12, 33 combine to form an outlet. When the impeller 2 is driven by the drive assembly 4, the high-speed rotation of the impeller 2 draws air into the first accommodation space 6 through the air inlet 11 and then blows it out through the outlet.

[0024] like Figure 1 As shown, the side wall of the volute upper cover 1 is provided with a buckle 13, and the side wall of the volute lower cover 3 is provided with a protrusion 34 that cooperates with the buckle 13. The buckle 13 cooperates with the protrusion 34 to quickly buckle the volute upper cover 1 and the volute lower cover 3 together, and at the same time plays a positioning role, which facilitates assembly.

[0025] like Figure 1-4 As shown, the drive assembly 4 includes: a stator 41, a magnet 42, a rotor 43, and a drive plate 44. The stator 41 is sleeved on the support shaft 32. The rotor 43 includes a cover 431 and an output shaft 432. The output shaft 432 is located at the center of the cover 431. The magnet 42 is located on the inner wall of the cover 431. The cover 431 is covered outside the stator 41. The output shaft 432 passes through the shaft hole 321 in the center of the support shaft 32 and is connected to the impeller 2. The drive plate 44 is located in the concave cavity 31 and is electrically connected to the stator 41. The end of the output shaft 432 connected to the impeller 2 is the power output end.

[0026] like Figure 1 、 4As shown, a balancing ring 433 is provided on the cover 431 of the rotor 43. Dynamic balancing is required to reduce vibration generated during motor operation. Balancing mud is usually added to the rotor 43 to correct the smoothness of the rotor 43 during rotation. However, there is no extra space for balancing mud in a motor with a relatively small volume and compact structure. Therefore, by adding a balancing ring 433 to the motor rotor 43 to achieve balancing, the complexity of the production process is reduced on the one hand, and the moment of inertia of the rotor 43 is reduced on the other hand, resulting in better performance of the motor.

[0027] like Figure 4 As shown, the outer wall of the cover body 431 is provided with an inner recess 434 for matching with the balancing ring 433, so as to make the balancing ring 433 more adaptable to the outer wall of the cover body 431 and realize quick installation.

[0028] like Figure 1 、 5 As shown, the volute lower cover 3 is provided with a screw hole 35, and the protective cover 5 is provided with a screw seat 51 matching the screw hole 35. The protective cover 5 is fixed to the volute lower cover 3 by screw connection, and the drive assembly 4 is covered inside the protective cover 5.

[0029] like Figure 2 、 3 As shown, a bearing chamber is provided in the shaft hole 321 in the middle of the support shaft 32 , and a bearing 8 that cooperates with the output shaft 432 is provided in the bearing chamber.

[0030] like Figure 6 As shown, the impeller 2 includes: a pad 21, a curved top plate 22 and a plurality of blades 23 arranged between the pad 21 and the curved top plate 22. The center of the pad 21 is connected to the power output end of the drive assembly 4. The blades 23 are arranged in a circular array at the edge of the pad 21 with the center of the pad 21 as the center of the circle. An air inlet hole 24 is opened in the middle of the curved top plate 22.

[0031] The beneficial effect of the present invention is that the support shaft for installing the drive assembly is integrated with the lower cover of the volute, and there is no need to set up an independent bracket to install the drive assembly. It effectively reduces costs while ensuring connection reliability, firmness, mechanical strength and assembly accuracy, and can meet the requirements of small-size structures.

Claims

1. A volute motor, characterized in that: include: A volute upper cover (1), a moving impeller (2), a volute lower cover (3), a drive assembly (4) and a protective cover (5); the moving impeller (2) is arranged in a first accommodating space (6) formed by the volute upper cover (1) and the volute lower cover (3); a concave cavity (31) is arranged in the middle of the volute lower cover (3); a support shaft (32) for arranging the drive assembly (4) is provided in the middle of the concave cavity (31); the protective cover (5) is arranged on the volute lower cover (3); the concave cavity (31) and the protective cover (5) form a second accommodating space (7); the drive assembly (4) is arranged in the second accommodating space (7) and is mounted on the support shaft (32); the power output end of the drive assembly (4) passes through the shaft hole (321) in the middle of the support shaft (32) and is connected to the moving impeller (2).

2. The volute motor according to claim 1, characterized in that: An air inlet (11) is provided on the end surface of the volute upper cover (1), a first air outlet channel (12) is provided on the side wall of the volute upper cover (1), and a second air outlet channel (33) is provided on the side wall of the volute lower cover (3), wherein the first air outlet channel (12) and the second air outlet channel (33) are combined to form an air outlet.

3. The volute motor according to claim 1, characterized in that: The side wall of the volute upper cover (1) is provided with a buckle (13), and the side wall of the volute lower cover (3) is provided with a protrusion (34) that cooperates with the buckle (13).

4. The volute motor according to claim 1, characterized in that: The drive assembly (4) comprises: a stator (41), a magnet (42), a rotor (43) and a drive plate (44); the stator (41) is sleeved on the support shaft (32); the rotor (43) comprises a cover (431) and an output shaft (432); the output shaft (432) is arranged at the center of the cover (431); the magnet (42) is arranged on the inner wall of the cover (431); the cover (431) is covered on the outside of the stator (41); the output shaft (432) passes through the shaft hole (321) at the center of the support shaft (32) and is connected to the impeller (2); the drive plate (44) is arranged in the concave cavity (31) and is electrically connected to the stator (41).

5. The volute motor according to claim 4, characterized in that: A balancing ring (433) is provided on the cover (431) of the rotor (43).

6. The volute motor according to claim 5, characterized in that: The outer wall of the cover body (431) is provided with an inner recess (434) for matching with the balance ring (433).

7. The volute motor according to claim 1, characterized in that: The volute lower cover (3) is provided with a screw connection hole (35), and the protective cover (5) is provided with a screw connection seat (51) matching the screw connection hole (35).

8. The volute motor according to claim 4, characterized in that: A bearing chamber is provided in the shaft hole (321) in the middle of the support shaft (32), and a bearing (8) matched with the output shaft (432) is provided in the bearing chamber.

9. The volute motor according to claim 1, characterized in that: The impeller (2) comprises: a pad (21), an arc-shaped top plate (22), and a plurality of blades (23) arranged between the pad (21) and the arc-shaped top plate (22); the center of the pad (21) is connected to the power output end of the drive assembly (4); the blades (23) are arranged in a circular array at the edge of the pad (21) with the center of the pad (21) as the center of the circle; and an air inlet (24) is opened in the middle of the arc-shaped top plate (22).

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