Motor dismounting structure for range hood

Abstract

The utility model provides a motor dismounting structure for a range hood, 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, connecting surfaces are arranged on the periphery of the motor body, the first plane is recessed to form a circular sinking area, and the second plane is recessed to form the circular sinking area. The motor body is 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 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] This utility model relates to the field of motors, and more specifically to a motor disassembly structure for a range hood. Background Technology

[0002] Most existing range hoods use motors to drive the fan blades to rotate, thereby drawing the fumes outside. Most existing range hood motors are internal rotor motors, which means that a rotating shaft is installed in the middle of the rotor core, and the fan blades are sleeved on the rotating shaft. Then, the external stator is energized to drive the rotor core to drive the rotating shaft to rotate, thereby driving the fan blades to rotate.

[0003] However, in the above solutions, in order to ensure the stability of the fan blade rotation, the fan blade is usually fixed to the shaft in a non-removable manner. This makes it very inconvenient to disassemble and repair if the fan blade inside the range hood malfunctions. In addition, in the internal rotor motor solution, the motor body is usually located between the fan blade and the range hood housing. This makes it very inconvenient to disassemble and repair the motor body if the motor body malfunctions because the fan blade is not easy to disassemble. Utility Model Content

[0004] To address the aforementioned problems, this application provides a motor disassembly structure for a range hood, comprising a volute-type exhaust duct. The volute-type exhaust duct includes a first plane and a second plane arranged parallel to each other, and a volute-type ventilation area between the first plane and the second plane. A motor body is disposed within the ventilation area. A connecting wall surrounds the motor body, and an exhaust port is provided on the connecting wall. A circular recessed area is formed on the first plane in the direction of the connecting wall. The motor body is concentrically suspended below the recessed area and detachably connected by a first connecting structure. An annular fan blade is disposed between the motor body and the connecting wall. The motor body and the fan blade are detachably connected by a second connecting structure. An air inlet for the fan blade to pass through is provided on the second plane.

[0005] Furthermore, the motor body includes a main shaft, a stator assembly is sleeved on the main shaft, and a rotor assembly is disposed outside 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 housing is connected to the outside of the stator assembly. The first connecting structure is disposed between the main shaft and the recessed area, and the second connecting structure is disposed between the housing and the connecting wall.

[0006] Furthermore, the first connection structure includes a first connecting ring disposed at the bottom of the sinking area and a first connecting plate disposed 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 corresponding first through holes. The first connecting plate is disposed 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 the 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 extends beyond the first connecting ring through the first connecting plate, and a dust cap is screwed onto the threaded area.

[0009] Furthermore, the second connection structure includes a second connecting plate arranged along the circumference of the housing and a second connecting ring disposed between the housing 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 disposed at the bottom of the second connecting plate. The second connecting plate and the second connecting ring are provided with corresponding second through holes, and the second connecting ring is disposed 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 on different planes. The first connecting surface is fixedly connected to the fan blade in the vertical direction, the second connecting surface is connected to the second connecting plate, and the second through hole is disposed on the second connecting plate.

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

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

[0013] Furthermore, bearings are fitted onto the main shaft, and the bearings are respectively disposed at both ends of the stator assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Compared with the prior art:

[0016] The motor in this application is an external rotor motor. A first connection structure is set to form a detachable connection between the motor body and the volute-type exhaust duct. A second connection structure is set to form a detachable connection between the motor body and the fan blade. At the same time, the air inlet is used to power the motor body and the fan blade to enter and exit, which is more conducive to the replacement and maintenance of the motor body and the fan blade.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the motor body of this utility model;

[0021] Figure 3 This is a schematic diagram of the volute-type exhaust duct of this utility model;

[0022] Figure 4 This is an assembly drawing of the motor body and fan blades of this utility model;

[0023] Figure 5 This is a cross-sectional view of the fan blade of this utility model;

[0024] Figure 6 This is an overall sectional view of the present invention;

[0025] Figure 7 This is a schematic diagram of the stator assembly of this utility model.

[0026] The reference numerals and names in the figure are as follows:

[0027] The components include: volute-type exhaust duct 100, first plane 110, second plane 120, ventilation zone 130, motor body 200, connecting wall 140, exhaust port 141, recessed area 111, fan blade 300, air inlet 121, main shaft 210, stator assembly 220, rotor assembly 230, rotor core 231, permanent magnet 232, housing 240, first connecting ring 111a, first connecting plate 250, first through hole 251, reinforcing rib 111b, threaded area 211, dust cap 260, second connecting plate 241, second connecting ring 310, second through hole 311, first connecting surface 312, second connecting surface 313, first reference surface 10, second reference surface 20, third reference surface 30, stator ring 221, tooth crown 222, tooth groove 223, stator tooth pole 224, and bearing 270. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The present invention will now be described in more detail. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0030] In the description of this utility model, it should be noted that directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom," indicating directions or positional relationships, are generally based on the directions or positional relationships shown in the accompanying drawings. They are used 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 component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting 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. In the description of this utility model, it should be noted that the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0032] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0033] The preferred embodiments of this utility model will now be further described with reference to the accompanying drawings. Figures 1 to 3 As shown, a motor disassembly structure for a range hood 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 disposed in the ventilation area 130. A connecting wall 140 surrounds the motor body 200. An exhaust port 141 is provided on the connecting wall 140. A circular recessed area 111 is formed on the first plane 110 in the direction of the connecting wall 140. The motor body 200 is concentrically suspended below the recessed area 111 and detachably connected by a first connecting structure. An annular fan blade 300 is disposed 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. An air inlet 121 is provided on the second plane 120 for the fan blade 300 to pass through.

[0034] In this embodiment, when fume extraction is required, the motor body 200 is activated. The motor body 200 drives the external fan blades 300 to rotate, drawing the fumes from the air inlet 121 on the second plane 120 into the volute-type ventilation zone 130. The rotation of the fan blades 300 then discharges the fumes from the exhaust port 141, thus completing the entire fume extraction process. When the motor body 200 needs to be cleaned or repaired, it is only necessary to use the first connecting structure to disassemble the motor body 200 from the recessed area 111, and then remove the motor body 200 and the fan blades 300 together from the air inlet 121. When the fan blades 300 need to be cleaned or repaired, it is only necessary to use the second connecting structure to disassemble the fan from the motor body 200, and then remove the fan blades 300 together from the air inlet 121.

[0035] Compared with the prior art, the motor of this application adopts an external rotor motor. The motor body 200 is detachably connected to the volute exhaust duct 100 by setting a first connection structure, and the motor body 200 is detachably connected to the fan blade 300 by setting a second connection structure. At the same time, the air inlet 121 is used to power the motor body 200 and the fan blade 300 to enter and exit, which is more conducive to the replacement and maintenance of the motor body 200 and the fan blade 300.

[0036] Furthermore, based on the above embodiments, such as Figure 2 As shown, the motor body 200 includes a main shaft 210, on which a stator assembly 220 is sleeved. A rotor assembly 230 is disposed outside the stator assembly 220, surrounding the stator assembly 220. The rotor assembly 230 includes an integrally formed rotor core 231 and a permanent magnet 232 embedded in the rotor core 231. A housing 240 is connected to the outside of the stator assembly 220. When the stator assembly 220 is energized, the rotor assembly 230, under the action of the magnetic field, forms a ring around the stator assembly 220. The motor body 200 rotates, thereby causing the housing 240 to rotate. The first connecting structure is located between the main shaft 210 and the recessed area 111, and the second connecting structure is located between the housing 240 and the connecting wall 140. When it is necessary to disassemble the motor body 200 from the volute exhaust duct 100, the first connecting structure needs to be operated to disassemble the main shaft 210 from the recessed area 111. When it is necessary to disassemble the fan blade 300 from the motor body 200, the second connecting structure needs to be operated to disassemble the housing 240 from the fan blade 300.

[0037] Furthermore, based on the above embodiments, combined with Figures 1 to 4 As shown, the first connecting structure includes a first connecting ring 111a disposed at the bottom of the recessed area 111 and a first connecting plate 250 disposed between the first connecting ring 111a and the motor body 200. The first connecting plate 250 is fixed on the main shaft 210. The first connecting plate 250 and the first connecting ring 111a are provided with corresponding first through holes 251. When the first connecting plate 250 and the first connecting ring 111a are assembled, the first connecting plate 250 is first positioned at the bottom of the first connecting ring 111a so that the first through holes 251 between them are aligned. Then, a screw (not shown in the figure) is inserted into the first through hole 251 to suspend the first connecting plate 250 at the bottom of the first connecting ring 111a. When it is necessary to disassemble the motor body 200 from the volute-type exhaust duct 100, it is only necessary to loosen the screw between the first connecting plate 250 and the first connecting ring 111a from the direction of the recessed area 111. It is not necessary to extend into the ventilation area 130. It is very simple, convenient and easy to operate.

[0038] In some embodiments, such as Figure 3 As shown, a reinforcing rib 111b is provided between the first plane 110 and the first connecting ring 111a. One end of the reinforcing rib 111b is aligned with the first through hole 251. Although in this embodiment, the motor body 200 is an external rotor motor and the main shaft 210 does not rotate in the working state, in this embodiment, for the sake of easy disassembly, the motor body 200 and the volute exhaust duct 100 are only connected by the first connecting plate 250 and the first connecting ring 111a. Therefore, when the rotor assembly 230 rotates at high speed, the main shaft 210 is affected and undergoes axial displacement. The reinforcing rib 111b is to reduce the impact of this displacement 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.

[0039] In some embodiments, combined with Figure 3 and Figure 4 As shown, a threaded area 211 is provided at the 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 extends beyond the first connecting ring 111a through the first connecting plate 250. A dust cap 260 is screwed onto the threaded area 211. In this application, the first plane 110 faces the top. The dust cap 260 on the main shaft 210 can prevent dust from 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.

[0040] Furthermore, based on the above embodiments, combined with Figure 2 and Figure 4 As shown, the second connection structure includes a second connecting plate 241 arranged along the circumference of the housing 240 and a second connecting ring 310 disposed between the housing 240 and the fan blade 300. One end of the second connecting ring 310 is fixed to the inner side of the fan blade 300, and the other end is disposed at the bottom of the second connecting plate 241. The second connecting plate 241 and the second connecting ring 310 are provided with corresponding second through holes 311. When the second connecting plate 241 and the second connecting ring 310 are assembled, the second connecting ring 310 is first positioned at the bottom of the second connecting plate 241 so that the second through holes 311 between them are aligned. Then, a screw (not shown in the figure) is inserted into the second through hole 311 to suspend the second connecting ring 310 at the bottom of the second connecting plate 241. When it is necessary to disassemble the fan from the motor body 200, it is only necessary to loosen the screw between the second connecting plate 241 and the second connecting ring 310 from the direction of the air inlet 121. It is not necessary to extend too far into the ventilation area 130. It is very simple, convenient and easy to operate.

[0041] Furthermore, in combination 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 on different planes. The first connecting surface 312 is fixedly connected to the fan blade 300 in the vertical direction, and the second connecting surface 313 is connected to the second connecting plate 241. The second through hole 311 is provided on the second connecting plate 241. This application uses an external rotor motor, which drives the housing 240 to rotate through the rotor assembly 230, thereby driving the external fan blade 300 to rotate. The motor body 200 and the volute exhaust duct 100 are only connected by the first connecting plate 25. The motor body 200 is suspended inside the ventilation zone 130 by a fixed point of the second connecting ring 310 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 wobble axially under the action of centrifugal force. By designing the two sides of the second connecting ring 310 to have different planes that contact the fan blade 300 and the housing 240 respectively, the centrifugal force in the axial direction perpendicular to the main shaft 210 can be reduced, thereby reducing the wobble effect of the fan blade 300 on the main shaft 210 when it rotates.

[0042] Furthermore, such as Figure 6 As shown, the first connecting plate 250 and the first connecting ring 111a are connected to form a first reference surface 10. The first connecting surface 312 is connected to the fan blade 300 to form a second reference surface 20. The second connecting surface 313 is connected to the housing 240 to form a third reference surface 30. The second reference surface 20 is located between the first reference surface 10 and the third reference surface 30. Based on the above principle, the centrifugal force is shifted towards the first reference surface 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 shifted towards the first reference surface 10 will cause the first connecting plate 250 to be further pressed against the first connecting plate 250, thereby making the connection between the two more stable. As a result, the motor body 200 can be more stably suspended inside the ventilation area 130.

[0043] Furthermore, based on the above embodiments, such as 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. 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 grooves 223. A stator tooth pole 224 is provided at the end of the tooth crown 222. The rotor assembly 230 is arranged around the stator tooth pole 224. Preferably, a bearing 270 is sleeved on the main shaft 210. The bearings 270 are respectively provided at both ends of the stator assembly 220.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A motor disassembly structure for a range hood, characterized in that, The system includes a volute-type exhaust duct (100), which comprises a first plane (110) and a second plane (120) arranged parallel to each other, and a volute-type ventilation zone (130) between the first plane (110) and the second plane (120). A motor body (200) is disposed within the ventilation zone (130), and a connecting wall (140) surrounds the motor body (200). The first plane (110) is recessed towards the connecting wall (140). The recess has a circular sunken area (111). The motor body (200) is concentrically suspended below the sunken area (111) and 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. An air inlet (121) is provided on the second plane (120) for the fan blade (300) to pass through.

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

3. The motor disassembly structure for a range hood according to claim 2, characterized in that, The first connecting structure includes a first connecting ring (111a) disposed at the bottom of the recessed area (111) and a first connecting plate (250) disposed between the first connecting ring (111a) and the motor body (200). The first connecting plate (250) is fixed on the main shaft (210). The first connecting plate (250) and the first connecting ring (111a) are provided with corresponding first through holes (251). The first connecting plate (250) is disposed at the bottom of the first connecting ring (111a).

4. The motor disassembly structure for a range hood 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 for a range hood 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) extends beyond the first connecting ring (111a) through the first connecting plate (250). A dust cap (260) is screwed onto the threaded area (211).

6. The motor disassembly structure for a range hood according to claim 3, characterized in that, The second connection structure includes a second connecting plate (241) arranged along the circumference of the housing (240) and a second connecting ring (310) disposed between the housing (240) and the fan blade (300). One end of the second connecting ring (310) is fixed to the inner side of the fan blade (300), and the other end is disposed at the bottom of the second connecting plate (241). A second through hole (311) is provided on the second connecting plate (241) and the second connecting ring (310) with corresponding positions. The second connecting ring (310) is disposed at the bottom of the second connecting plate (241).

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

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

9. The motor disassembly structure for a range hood according to claim 2, characterized in that, The stator assembly (220) includes a stator ring (221) and a plurality of tooth crowns (222) extending outward along the outer circumference. 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 grooves (223). A stator tooth pole (224) is provided at the end of the tooth crown (222). The rotor assembly (230) is arranged around the stator tooth pole (224).

10. The motor disassembly structure for a range hood according to claim 9, characterized in that, Bearings (270) are fitted onto the main shaft (210), and the bearings (270) are respectively disposed at both ends of the stator assembly (220).

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