Motor dismounting structure

Abstract

The invention provides a motor dismounting structure which comprises a volute type exhaust duct, the volute type exhaust duct comprises a first plane, a second plane and a ventilation area, a motor body is arranged in the ventilation area, the periphery of the motor body is wrapped with a connecting face, the first plane is concaved to form a circular sinking area, and the second plane is provided with a connecting face. The motor body is concentrically suspended below the sinking area and is detachably connected with the sinking area through a first connecting structure, an annular fan blade is arranged between the motor body and the connecting surface, and the motor body and the fan blade are detachably connected through a second connecting structure. According to the motor, the outer rotor motor is adopted, the motor body is detachably connected with the exhaust duct through the first connecting structure, the motor body is detachably connected with the fan blades through the second connecting structure, it is guaranteed that the motor structure has the good dustproof and waterproof grade, and meanwhile the motor body and the fan blades can enter and exit through the air inlet; therefore, replacement and maintenance of the motor body and the fan blades are facilitated.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to a motor disassembly structure. Background Art

[0002] Most of the existing range hoods use motors to drive the fan blades to rotate, so as to draw the oil smoke out of the house. Most of the motors of the existing range hoods are internal rotor motors, that is, a rotating shaft is installed in the middle of the rotor core, and the fan blades are sleeved on the rotating shaft. Then, after the external stator is energized, the rotor core is driven to drive the rotating shaft to rotate, thereby driving the fan blades to rotate.

[0003] However, in the above scheme, in order to ensure the stability of the rotation of the fan blades, the fan blades are usually fixed on the rotating shaft in an irremovable manner. In this way, if the fan blades in the range hood fail, it will be very inconvenient to disassemble and repair them. In addition, in the inner rotor motor scheme, the motor body is usually located between the fan blades and the range hood casing. In this way, if the motor body fails, the fan blades are not convenient to disassemble, which will also cause great inconvenience to the disassembly and repair of the motor body. Summary of the invention

[0004] In order to solve the above problems, the present application provides a motor disassembly structure, including a volute exhaust duct, the volute exhaust duct including a first plane and a second plane arranged parallel to each other and a volute ventilation area between the first plane and the second plane, a motor body is arranged in the ventilation area, a connecting wall is wrapped around the motor body, an exhaust port is opened on the connecting wall, a circular sinking area is formed on the first plane which is recessed toward the connecting wall, the motor body is concentrically suspended below the sinking area and is detachably connected by a first connecting structure, an annular fan blade is arranged between the motor body and the connecting wall, the motor body and the fan blade are detachably connected by a second connecting structure, and an air inlet for the fan blade to pass through is opened on the second plane.

[0005] Furthermore, the motor body includes a main shaft, a stator assembly is sleeved on the main shaft, a rotor assembly is arranged on the outside of the stator assembly, the rotor assembly surrounds the stator assembly, the rotor assembly includes an integrally formed rotor core and a permanent magnet embedded in the rotor core, a shell is connected to the outside of the stator assembly, the first connecting structure is arranged between the main shaft and the sinking area, and the second connecting structure is arranged between the shell and the connecting wall.

[0006] Furthermore, the first connecting structure includes a first connecting ring arranged at the bottom of the sinking area and a first connecting plate arranged between the first connecting ring and the motor body, the first connecting plate is fixed on the main shaft, and the first connecting plate and the first connecting ring are provided with first through holes with corresponding positions, and the first connecting plate is configured at the bottom of the first connecting ring.

[0007] Furthermore, a reinforcing rib is provided between the first plane and the first connecting ring, and one end of the reinforcing rib is aligned with the first through hole.

[0008] Furthermore, a threaded area is provided at one end of the main shaft away from the stator assembly. When the first connecting plate and the first connecting ring are connected, the threaded area passes through the first connecting plate and extends out of the first connecting ring. A dust cap is screwed on the threaded area.

[0009] Furthermore, the second connecting structure includes a second connecting plate arranged along the circumferential direction of the shell and a second connecting ring arranged between the shell and the fan blade, one end of the second connecting ring is fixed to the inner side of the fan blade, and the other end is arranged at the bottom of the second connecting plate, and second through holes corresponding to the positions are arranged on the second connecting plate and the second connecting ring, and the second connecting ring is configured at the bottom of the second connecting plate.

[0010] Furthermore, the second connecting ring includes a first connecting surface and a second connecting surface located in different planes, the first connecting surface is fixedly connected to the wind blade in a vertical direction, the second connecting surface is connected to the second connecting plate, and the second through hole is arranged on the second connecting plate.

[0011] Furthermore, the first connecting plate and the first connecting ring are connected to form a first reference plane, the first connecting plane is connected to the fan blade to form a second reference plane, the second connecting plane is connected to the shell to form a third reference plane, and the second reference plane is located between the first reference plane and the third reference plane.

[0012] Furthermore, the stator assembly includes a stator ring and a plurality of tooth crowns extending outward along the outer circumference thereof, the tooth crowns are used for winding coils, the tooth crowns divide the outer circumference of the stator ring into a plurality of tooth slots, stator tooth poles are arranged at the ends of the tooth crowns, and the rotor assembly is arranged around the stator tooth poles.

[0013] Furthermore, bearings are sleeved on the main shaft, and the bearings are respectively arranged at two ends of the stator assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Compared with the prior art, this application: The motor of the present application adopts an outer rotor motor, and a first connecting structure is provided to form a detachable connection between the motor body and the volute exhaust duct, and a second connecting structure is provided to form a detachable connection between the motor body and the fan blades. At the same time, an air inlet is used to allow the motor body and the fan blades to enter and exit, which is more conducive to the replacement and maintenance of the motor body and the fan blades.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural exploded view of the motor body of the present invention; Figure 3 It is a schematic structural diagram of the volute type exhaust duct of the present invention; Figure 4 It is an assembly diagram of the motor body and the fan blades of the present invention; Figure 5 is a cross-sectional view of a fan blade of the present invention; Figure 6 It is an overall cross-sectional view of the present invention; Figure 7 It is a structural schematic diagram of the stator assembly of the present invention.

[0018] The reference numerals and names in the figures are as follows: The volute type exhaust duct 100, the first plane 110, the second plane 120, the ventilation area 130, the motor body 200, the connecting wall 140, the exhaust port 141, the sinking area 111, the fan blade 300, the air inlet 121, the main shaft 210, the stator assembly 220, the rotor assembly 230, the rotor core 231, the permanent magnet 232, the shell 240, the first connecting ring 111a, the first connecting plate 250, the first through hole 251, the reinforcing rib 111b, the threaded area 211, the dust cap 260, the second connecting plate 241, the second connecting ring 310, the second through hole 311, the first connecting surface 312, the second connecting surface 313, the first reference plane 10, the second reference plane 20, the third reference plane 30, the stator ring 221, the tooth crown 222, the tooth groove 223, the stator tooth pole 224, and the bearing 270. DETAILED DESCRIPTION The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention is described in more detail. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words 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 cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. In the description of the present invention, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning, and therefore cannot be understood as limiting the scope of protection of the present invention. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0022] The preferred embodiments of the present invention will now be further described in conjunction with the accompanying drawings. Figures 1 to 3As shown, a motor disassembly structure includes a volute type exhaust duct 100, the volute type exhaust duct 100 includes a first plane 110 and a second plane 120 arranged parallel to each other and a volute type ventilation area 130 between the first plane 110 and the second plane 120, a motor body 200 is arranged in the ventilation area 130, a connecting wall 140 is wrapped around the motor body 200, an exhaust port 141 is opened on the connecting wall 140, a circular sinking area 111 is formed on the first plane 110 which is recessed toward the connecting wall 140, the motor body 200 is concentrically suspended below the sinking area 111 and is detachably connected by a first connecting structure, an annular fan blade 300 is arranged between the motor body 200 and the connecting wall 140, the motor body 200 and the fan blade 300 are detachably connected by a second connecting structure, and an air inlet 121 for the fan blade 300 to pass through is opened on the second plane 120.

[0023] During operation of the present embodiment, when it is necessary to extract oil smoke, the motor body 200 is started, and the motor body 200 drives the external fan blades 300 to rotate, so that the oil smoke is drawn into the volute-type ventilation area 130 from the air inlet 121 arranged on the second plane 120, and the oil smoke is discharged from the exhaust port 141 through the rotation of the fan blades 300, thereby completing the entire extraction process. When it is necessary to clean and repair the motor body 200, it is only necessary to use the first connecting structure to disassemble the motor body 200 and the sinking area 111, and then remove the motor body 200 and the fan blades 300 from the air inlet 121 together. When it is necessary to clean and repair the fan blades 300, it is only necessary to use the second connecting structure to disassemble the fan and the motor body 200, and then remove the fan blades 300 from the air inlet 121 together.

[0024] Compared with the prior art, the motor of the present application adopts an outer rotor motor, and a first connecting structure is provided to form a detachable connection between the motor body 200 and the volute exhaust duct 100, and a second connecting structure is provided to form a detachable connection between the motor body 200 and the fan blades 300. At the same time, the air inlet 121 is used to allow the motor body 200 and the fan blades 300 to enter and exit, which is more conducive to the replacement and maintenance of the motor body 200 and the fan blades 300.

[0025] On the basis of the above embodiments, Figure 2As shown, the motor body 200 includes a main shaft 210, on which a stator assembly 220 is sleeved, and a rotor assembly 230 is arranged outside the stator assembly 220, and the rotor assembly 230 surrounds the stator assembly 220, and the rotor assembly 230 includes an integrally formed rotor core 231 and a permanent magnet 232 embedded in the rotor core 231, and a housing 240 is connected to the outside of the stator assembly 220. When the stator assembly 220 is energized, the rotor assembly 230 opens a space around the stator assembly 220 under the action of the magnetic field. 20 rotates, thereby driving the shell 240 to rotate, the first connecting structure is arranged between the main shaft 210 and the sinking area 111, and the second connecting structure is arranged between the shell 240 and the connecting wall 140. When the motor body 200 needs to be disassembled and separated from the volute exhaust duct 100, it is necessary to operate the first connecting structure to make the main shaft 210 disengage from the sinking area 111, and when the fan blades 300 need to be disassembled and separated from the motor body 200, it is necessary to operate the second connecting structure to make the shell 240 disengage from the fan blades 300.

[0026] On the basis of the above embodiments, Figures 1 to 4 As shown, the first connection structure includes a first connection ring 111a arranged at the bottom of the sinking area 111 and a first connection plate 250 arranged between the first connection ring 111a and the motor body 200. The first connection plate 250 is fixed on the main shaft 210. The first connection plate 250 and the first connection ring 111a are provided with first through holes 251 corresponding to the positions. When the first connection plate 250 and the first connection ring 111a are assembled, the first connection plate 250 is first arranged at the bottom of the first connection ring 111a so that the first through holes 251 therebetween are aligned, and then a screw (not shown in the figure) is inserted into the first through hole 251 to suspend the first connection plate 250 at the bottom of the first connection ring 111a. When the motor body 200 needs to be disassembled from the volute exhaust duct 100, it is only necessary to loosen the screw between the first connection plate 250 and the first connection ring 111a from the direction of the sinking area 111, and it is not necessary to extend into the ventilation area 130. It is very simple, convenient and easy to operate.

[0027] In some embodiments, Figure 3As shown, a reinforcing rib 111b is provided between the first plane 110 and the first connecting ring 111a, and one end of the reinforcing rib 111b is aligned with the first through hole 251. Although in the present embodiment, the motor body 200 adopts an outer rotor motor, and the main shaft 210 does not rotate in the working state, in the present embodiment, for the convenience of disassembly, the motor body 200 and the volute exhaust duct 100 are connected only by the first connecting plate 250 and the first connecting ring 111a. Therefore, when the rotor assembly 230 rotates at a high speed, the main shaft 210 is affected and produces axial deviation. The reinforcing rib 111b is used to reduce the influence of such deviation on the connection between the first connecting plate 250 and the first connecting ring 111a, and to strengthen the stability of the connection between the first connecting plate 250 and the first connecting ring 111a.

[0028] In some embodiments, in combination Figure 3 and Figure 4 As shown, a threaded area 211 is provided at one end of the main shaft 210 away from the stator assembly 220. When the first connecting plate 250 and the first connecting ring 111a are connected, the threaded area 211 passes through the first connecting plate 250 and extends out of the first connecting ring 111a. A dust cap 260 is screwed on the threaded area 211. In the present application, the first plane 110 is facing the top. The dust cap 260 is provided on the main shaft 210 to prevent dust on the top from entering the motor body 200 through the gap between the main shaft 210 and the first connecting plate 250, thereby affecting the operation of the motor body 200.

[0029] On the basis of the above embodiments, Figure 2 and Figure 4 As shown, the second connection structure includes a second connection plate 241 arranged along the circumference of the shell 240 and a second connection ring 310 arranged between the shell 240 and the fan blade 300, one end of the second connection ring 310 is fixed to the inner side of the fan blade 300, and the other end is arranged at the bottom of the second connection plate 241, and second through holes 311 corresponding to the positions are arranged on the second connection plate 241 and the second connection ring 310. When the second connection plate 241 and the second connection ring 310 are assembled, the second connection ring 310 is first arranged at the bottom of the second connection plate 241 so that the second through holes 311 therebetween are aligned, and then a screw (not shown in the figure) is inserted into the second through hole 311 to suspend the second connection ring 310 at the bottom of the second connection plate 241. When the fan needs to be disassembled from the motor body 200, it is only necessary to loosen the screw between the second connection plate 241 and the second connection ring 310 from the direction of the air inlet 121, and it is not necessary to extend too far into the ventilation area 130. It is very simple, convenient and easy to operate.

[0030] Furthermore, combined with Figure 4 and Figure 5 As shown, the second connecting ring 310 includes a first connecting surface 312 and a second connecting surface 313 located in different planes, the first connecting surface 312 is fixedly connected to the fan blade 300 in a vertical direction, the second connecting surface 313 is connected to the second connecting plate 241, and the second through hole 311 is arranged on the second connecting plate 241. The present application adopts an outer rotor motor, and the housing 240 is driven to rotate by the rotor assembly 230, thereby driving the external fan blade 300 to rotate, and the motor body 200 and the volute exhaust duct 100 have only the first connecting plate 25 0 and the second connecting ring 310 are a fixed point, so that the motor body 200 is suspended inside the ventilation area 130, and the first connecting plate 250 is fixed on the main shaft 210. Therefore, when the fan blade 300 is driven to rotate, the main shaft 210 will inevitably have axial deflection under the action of centrifugal force. By designing the two sides of the second connecting ring 310 to be different planes that contact the fan blade 300 and the shell 240 respectively, the centrifugal force in the axial direction perpendicular to the main shaft 210 can be reduced, thereby reducing the deflection effect of the fan blade 300 on the main shaft 210 during rotation.

[0031] Furthermore, if Figure 6 As shown, the first connecting plate 250 and the first connecting ring 111a are connected to form a first reference plane 10, the first connecting surface 312 and the fan blade 300 are connected to form a second reference plane 20, and the second connecting surface 313 and the shell 240 are connected to form a third reference plane 30, and the second reference plane 20 is located between the first reference plane 10 and the third reference plane 30. In this way, based on the above principle, the centrifugal force is offset toward the direction of the first reference plane 10 in the axial direction perpendicular to the main shaft 210. Since the first connecting plate 250 is located at the bottom of the first connecting ring 111a, the centrifugal force offset to the first reference plane 10 will make the first connecting plate 250 further upward and close to the first connecting plate 250, so that the connection between the two is more stable, and then the motor body 200 can be more stably suspended inside the ventilation area 130.

[0032] On the basis of the above embodiments, Figure 7 As shown, the stator assembly 220 includes a stator ring 221 and a plurality of tooth crowns 222 extending outward along the outer circumference thereof, the tooth crowns 222 are used for winding coils, the tooth crowns 222 divide the outer circumference of the stator ring 221 into a plurality of tooth slots 223, and stator tooth poles 224 are arranged at the ends of the tooth crowns 222. The rotor assembly 230 is arranged around the stator tooth poles 224 in a ring, and preferably, a bearing 270 is sleeved on the main shaft 210, and the bearings 270 are respectively arranged at both ends of the stator assembly 220.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A motor disassembly structure, characterized in that: The invention comprises a volute-type exhaust duct (100), wherein the volute-type exhaust duct (100) comprises a first plane (110) and a second plane (120) arranged in parallel with each other, and a volute-type ventilation area (130) between the first plane (110) and the second plane (120), wherein a motor body (200) is arranged in the ventilation area (130), a connecting wall (140) is wrapped around the motor body (200), an exhaust port (141) is opened on the connecting wall (140), and a first plane (110) is provided with a first exhaust port (141). A circular sinking area (111) is formed by being recessed in the direction of the connecting wall (140); the motor body (200) is concentrically suspended below the sinking area (111) and is detachably connected via a first connecting structure; an annular fan blade (300) is arranged between the motor body (200) and the connecting wall (140); the motor body (200) and the fan blade (300) are detachably connected via a second connecting structure; and an air inlet (121) through which the fan blade (300) can pass is provided on the second plane (120).

2. The motor disassembly structure according to claim 1, characterized in that: The motor body (200) comprises a main shaft (210), a stator assembly (220) is sleeved on the main shaft (210), a rotor assembly (230) is arranged outside the stator assembly (220), the rotor assembly (230) surrounds the stator assembly (220), the rotor assembly (230) comprises an integrally formed rotor core (231) and a permanent magnet (232) embedded in the rotor core (231), a housing (240) is connected outside the stator assembly (220), the first connection structure is arranged between the main shaft (210) and the sinking area (111), and the second connection structure is arranged between the housing (240) and the connecting wall (140).

3. The motor disassembly structure according to claim 2, characterized in that: The first connection structure comprises a first connection ring (111a) arranged at the bottom of the sinking area (111) and a first connection plate (250) arranged between the first connection ring (111a) and the motor body (200); the first connection plate (250) is fixed on the main shaft (210); first through holes (251) corresponding in position are arranged on the first connection plate (250) and the first connection ring (111a); the first connection plate (250) is arranged at the bottom of the first connection ring (111a).

4. The motor disassembly structure according to claim 3, characterized in that: A reinforcing rib (111b) is provided between the first plane (110) and the first connecting ring (111a), and one end of the reinforcing rib (111b) is aligned with the first through hole (251).

5. The motor disassembly structure according to claim 3, characterized in that: A threaded area (211) is provided at one end of the main shaft (210) away from the stator assembly (220); when the first connecting plate (250) and the first connecting ring (111a) are connected, the threaded area (211) passes through the first connecting plate (250) and extends out of the first connecting ring (111a); and a dust cap (260) is screwed onto the threaded area (211).

6. The motor disassembly structure according to claim 3, characterized in that: The second connection structure comprises a second connection plate (241) arranged along the circumferential direction of the shell (240) and a second connection ring (310) arranged between the shell (240) and the fan blade (300); one end of the second connection ring (310) is fixed to the inner side of the fan blade (300), and the other end is arranged at the bottom of the second connection plate (241); second through holes (311) corresponding in position are arranged on the second connection plate (241) and the second connection ring (310); and the second connection ring (310) is arranged at the bottom of the second connection plate (241).

7. The motor disassembly structure according to claim 6, characterized in that: The second connecting ring (310) comprises a first connecting surface (312) and a second connecting surface (313) located in different planes, the first connecting surface (312) being fixedly connected to the fan blade (300) in a vertical direction, the second connecting surface (313) being connected to the second connecting plate (241), and the second through hole (311) being arranged on the second connecting plate (241).

8. The motor disassembly structure according to claim 7, characterized in that: The first connecting plate (250) and the first connecting ring (111a) are connected to form a first reference plane (10), the first connecting plane (312) and the fan blade (300) are connected to form a second reference plane (20), and the second connecting plane (313) and the housing (240) are connected to form a third reference plane (30), wherein the second reference plane (20) is located between the first reference plane (10) and the third reference plane (30).

9. The motor disassembly structure according to claim 2, characterized in that: The stator assembly (220) comprises a stator ring (221) and a plurality of tooth crowns (222) extending outwardly along the outer circumference thereof; the tooth crowns (222) are used for winding coils; the tooth crowns (222) divide the outer circumference of the stator ring (221) into a plurality of tooth slots (223); stator tooth poles (224) are arranged at the ends of the tooth crowns (222); and the rotor assembly (230) is arranged around the stator tooth poles (224) in a ring.

10. The motor disassembly structure according to claim 9, characterized in that: A bearing (270) is sleeved on the main shaft (210), and the bearings (270) are respectively arranged at two ends of the stator assembly (220).

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