Motor assembly and range hood comprising same

Abstract

The utility model provides a motor assembly and a range hood comprising the same, the motor assembly comprises a motor and a motor support, the motor is arranged at an impeller axis of a centrifugal fan and is coaxially arranged with an impeller, the motor further comprises a shell, a rotor of the motor is located in the shell, and the rotor of the motor is located in the shell. The rotor and the shell are coaxially arranged; the shell is provided with an installation part, the installation part is connected to the motor support through a bolt assembly, and an included angle of 30-90 degrees is formed between the installation part and the axis of the shell in the axis direction of the shell. The inclined angle is formed at the joint of the mounting part and the motor support, compared with a mode that the mounting part and the motor support are vertically arranged, the inclined mounting part carries out component force on swing generated in the rotating process of the impeller, then the joint of the motor and the motor support can generate a certain restraining effect on swing, and the situation that the whole machine vibrates too much is avoided; therefore, the performance of the centrifugal fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors of range hoods, and particularly relates to a motor assembly and a range hood including the same. Background Art

[0002] At present, the air inlet forms of the centrifugal fan systems used in range hoods are divided into single-suction and double-suction structures. Due to the advantage of air inlet from both sides of the double-suction structure of the range hood, the utilization rate of the fan in height is better, and the flow rate of the fan can be increased, so it is widely used in current range hoods. As the power device of the range hood, the centrifugal fan is driven by a motor to drive the centrifugal impeller. For the double-suction fan system, generally, the motor bracket is fixed on the side wall of the air inlet of the volute, and the motor encloses the rotor through the upper and lower covers and is fixed together with the bracket at the same time.

[0003] The rotation axis of the existing impeller is vertically arranged with the gravity direction of the motor. The motor is connected to the motor bracket through fixing screws. Due to the imbalance of the impeller, certain swing will occur during the rotation process, and the vertical connection method at the connection between the installation part on the motor and the motor bracket fails to produce a certain inhibitory effect on the swing generated, easily causing excessive vibration of the whole machine and further performance loss. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defect that vibration is easy to occur when the motor installation part and the motor bracket are vertically arranged in the prior art, and to provide a motor assembly and a range hood including the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A motor assembly, the motor assembly includes a motor and a motor bracket. The motor is arranged at the impeller axis of the centrifugal fan and is coaxially arranged with the impeller. The motor further includes:

[0007] A housing, the rotor of the motor is located in the housing, and the rotor is coaxially arranged with the housing; an installation part is arranged on the housing, and the installation part is connected to the motor bracket through a bolt assembly. Along the axis direction of the housing, the installation part forms an angle of 30-90° with the axis of the housing.

[0008] In this solution, by arranging the mounting parts on the housing in an inclined manner along the axis of the housing, when the mounting parts are connected to the motor bracket, an inclination angle is formed at the connection between the mounting parts and the motor bracket. Compared with the way that the mounting parts are perpendicular to the motor bracket, the inclined mounting parts can resolve the gravity of the motor and also resolve the swing generated during the rotation of the impeller, so that the connection between the motor and the motor bracket can play a certain role in suppressing the swing, avoiding excessive vibration of the whole machine and the resulting performance loss, thereby improving the performance of the centrifugal fan.

[0009] Preferably, the housing includes a first outer shell and a second outer shell. The first outer shell and the second outer shell are arranged along the length direction of the housing and cover the outer periphery of the rotor. The mounting parts are respectively arranged on the first outer shell and the second outer shell, and the first outer shell and the second outer shell are connected through the mounting parts to form the housing.

[0010] In this solution, through the above arrangement, the first outer shell and the second outer shell can be connected through the mounting parts to form a housing, which is more convenient for the installation of the motor rotor compared with an integrally formed housing.

[0011] Preferably, a plurality of the mounting parts are arranged at intervals along the radial direction of the housing.

[0012] In this solution, through the above arrangement, the connection stability between the first outer shell and the second outer shell is improved by increasing the number of mounting parts. In addition, the connection stability between the motor and the motor bracket is also increased.

[0013] Preferably, the motor assembly further includes a rubber pad, and the rubber pad is disposed between the mounting part and the motor bracket.

[0014] In this solution, through the above arrangement, buffering of the vibration generated by the rotation of the impeller is achieved.

[0015] Preferably, the motor bracket includes a plurality of legs. The first end of the leg is used to connect to the volute of the centrifugal fan, and the second end of the leg forms an angle of 30 - 75° with the plane where the volute is located.

[0016] In this solution, through the above arrangement, compared with the legs arranged perpendicular to the axis direction of the housing, the inclined legs can reduce the intake resistance of the impeller and improve the performance of the centrifugal fan.

[0017] Preferably, a mounting hole is provided near the second end of the leg, and the leg is connected to the mounting part through the mounting hole and the bolt assembly.

[0018] In this solution, through the above arrangement, the connection between the motor bracket and the motor is achieved.

[0019] Preferably, the first end of the leg is parallel to the plane where the volute is located. A bending portion is provided on the leg, and a reinforcing rib is further provided between the first end of the leg and the bending portion.

[0020] In this solution, through the above settings, the structural strength of the leg is improved.

[0021] Preferably, a flanging structure is provided at the edge of the leg.

[0022] In this solution, through the above settings, the structural strength of the leg is further improved.

[0023] Preferably, a corrugated structure is provided in the middle area of the leg.

[0024] In this solution, through the above settings, the structural strength of the leg is further improved.

[0025] An oil fume extractor, which comprises the motor assembly as described above.

[0026] In this solution, the oil fume extractor includes the above motor assembly to improve the performance of the centrifugal fan, reduce the intake resistance when the centrifugal fan is working, and at the same time, reduce the motor vibration affected by the impeller, thereby reducing the noise when the centrifugal fan is working and improving the noise quality.

[0027] The positive and progressive effects of the present utility model are as follows: by arranging the mounting portion on the housing obliquely along the axis direction of the housing, when the mounting portion is connected to the motor bracket, an inclination angle is formed at the connection between the mounting portion and the motor bracket. Compared with the way that the mounting portion is perpendicular to the motor bracket, the obliquely arranged mounting portion can resolve the gravity of the motor and can also resolve the swing generated during the rotation of the impeller, so that the connection between the motor and the motor bracket can play a certain role in suppressing the swing, avoiding excessive vibration of the whole machine and the resulting performance loss, thereby improving the performance of the centrifugal fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Is a perspective view of a centrifugal fan according to a preferred embodiment of the present utility model.

[0029] Figure 2 Is a position relationship diagram of the impeller and the motor according to a preferred embodiment of the present utility model.

[0030] Figure 3 Is a position relationship diagram of the leg and the mounting portion according to a preferred embodiment of the present utility model.

[0031] Figure 4 Is a perspective view of a leg according to a preferred embodiment of the present utility model.

[0032] Description of the reference numerals in the drawings:

[0033] Motor 10

[0034] Housing 11

[0035] First outer shell 111

[0036] Second outer shell 112

[0037] Mounting part 12

[0038] Motor bracket 20

[0039] Leg 21

[0040] Mounting hole 211

[0041] Bending part 212

[0042] Impeller 30

[0043] Rubber pad 40

[0044] Volute 50

[0045] Reinforcing rib 60

[0046] Flanging structure 70

[0047] Pressing structure 80 Detailed implementation mode

[0048] The following gives a preferred embodiment and, in conjunction with the accompanying drawings, more clearly and completely describes the present utility model.

[0049] This embodiment provides a motor assembly, and the specific structure is as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 . The motor assembly includes a motor 10 and a motor bracket 20. The motor 10 is arranged at the axis of the impeller 30 of the centrifugal fan and is coaxially arranged with the impeller 30. The motor 10 further includes:

[0050] A housing 11. The rotor of the motor 10 (not shown in the figure) is located inside the housing 11, and the rotor is coaxially arranged with the housing 11. An installation part 12 is arranged on the housing 11, and the installation part 12 is connected to the motor bracket 20 through a bolt assembly. Along the axial direction of the housing 11, the installation part 12 forms an angle of 30 - 90° with the axis of the housing 11.

[0051] Specifically, the housing 11 has a cylindrical structure and is located at the axis of the impeller 30 and coaxial with the axis of the impeller 30. An installation part 12 is provided on the housing 11. The installation part 12 is a flat plate. The motor bracket 20 and the installation part 12 are connected by a bolt assembly to form an integral body. Among them, the installation part 12 forms an angle of 30-90° with the axis of the housing 11 in the axial direction of the housing 11. That is to say, the installation part 12 is inclined. Thus, when the installation part 12 is connected to the motor bracket 20, an inclination angle is formed at the connection between the installation part 12 and the motor bracket 20. Compared with the way that the installation part 12 and the motor bracket 20 are perpendicular after connection when the installation part 12 is perpendicular to the axis of the housing 11, the inclined installation part 12 can reduce the intake resistance of the centrifugal fan, that is, more gas flow can enter the impeller 30 to improve the performance of the centrifugal fan.

[0052] In addition, the inclined installation part 12 can divide the gravity of the motor 10. Especially when the impeller 30 is rotating, due to the imbalance of the impeller 30, it will generate a certain swing during rotation. When the swing is transmitted to the motor 10 through the motor bracket 20, the installation part 12 perpendicular to the axis of the housing 11 cannot divide the swing, so that the self-gravity of the motor 10 intensifies the acting force of the swing, causing the motor 10 to vibrate violently. The inclined installation part 12 can overcome the above problems, avoid excessive vibration of the whole machine, reduce the performance loss of the centrifugal fan, and improve the performance of the centrifugal fan.

[0053] In this embodiment, the housing 11 includes a first outer shell 111 and a second outer shell 112. The first outer shell 111 and the second outer shell 112 are arranged along the length direction of the housing 11 and cover the outer periphery of the rotor. The installation parts 12 are respectively provided on the first outer shell 111 and the second outer shell 112, and the first outer shell 111 and the second outer shell 112 are connected through the installation parts 12 to form the housing 11.

[0054] Specifically, the first outer shell 111 and the second outer shell 112 are sleeve structures, and installation parts 12 are provided on both the first outer shell 111 and the second outer shell 112. Among them, the installation part 12 is provided at the end of the first outer shell 111 close to the second outer shell 112, and the installation part 12 is provided at the end of the second outer shell 112 close to the first outer shell 111. The installation parts 12 on the first outer shell 111 and the second outer shell 112 face the same direction, so that when the first outer shell 111 and the second outer shell 112 are buckled, the installation parts 12 on the first outer shell 111 and the second outer shell 112 can fit together, and an integral structure, that is, the housing 11, can be formed when the installation part 12 is connected to the motor bracket 20 through a bolt assembly. By setting the housing 11 as a split structure, compared with the integrally formed housing 11, it is convenient for the installation of the rotor of the motor 10.

[0055] In this embodiment, a plurality of mounting portions 12 are provided at intervals in the radial direction of the housing 11. In this embodiment, the number of the mounting portions 12 is eight for illustration purposes, but it is not limited thereto. Among them, four mounting portions 12 are provided at intervals on the first housing 111, and four mounting portions 12 are provided at intervals on the second housing 112. The positions of the mounting portions 12 on the first housing 111 and the second housing 112 correspond to each other so that the mounting portions 12 are in contact when the first housing 111 and the second housing 112 are buckled, and the connection stability between the first housing 111 and the second housing 112 is improved by increasing the number of the mounting portions 12.

[0056] It can be understood that when the number of the mounting portions 12 increases, the connection points between the motor 10 and the motor bracket 20 increase accordingly, that is, the connection stability between the motor 10 and the motor bracket 20 is increased.

[0057] In this embodiment, the motor assembly further includes a rubber pad 40, and the rubber pad 40 is disposed between the mounting portion 12 and the motor bracket 20.

[0058] Specifically, the mounting portion 12 has a mounting groove (not shown in the figure). The mounting groove is a "C"-shaped groove and has an opening. When the bolt assembly connects the motor bracket 20 and the mounting portion 12, the screw of the bolt assembly extends into the mounting groove, and the nut and the screw of the screw are screwed to squeeze the mounting portion 12 and the motor bracket 20, thereby realizing the connection between the motor 10 and the motor bracket 20. The rubber pad 40 is of a cylindrical structure, and a groove is provided in the middle area of the cylindrical structure. The "C"-shaped groove is snapped into the groove. The rubber pad 40 has a through hole for the screw to pass through. A plurality of "V"-shaped grooves are arranged radially along both ends of the rubber pad 40. When the rubber pad 40 is disposed on the "C"-shaped groove through the groove, the screw is inserted into the through hole and locked by screwing. At this time, one end of the rubber pad 40 is located between the mounting portion 12 and the motor bracket 20, and the other end is located between the nut or the screw and the mounting portion 12. And during the locking process, the plurality of "V"-shaped grooves are compressed by extrusion, and a buffering function is provided in a deformed manner, thereby suppressing the vibration generated by the rotation of the impeller 30 when transmitted to the motor 10.

[0059] In this embodiment, the motor bracket 20 includes a plurality of legs 21. The first end of the leg 21 is used for connecting with the volute 50 of the centrifugal fan, and the second end of the leg 21 forms an angle of 30-75° with the plane where the volute 50 is located.

[0060] Specifically, the outrigger 21 is a rod member, and the outrigger 21 includes a first section and a second section. Among them, the first section is the part close to the first end of the outrigger 21, and the second section is the remaining part of the outrigger 21. The connection between the first section and the second section of the outrigger 21 is in a "C" - shaped structure to extend the outrigger 21 to the axis of the impeller 30 and connect it to the motor 10. Taking the plane where the volute 50 is located as the reference plane, the second end of the outrigger 21 forms an angle of 30 - 75° with the plane where the volute 50 is located. Compared with the outrigger 21 arranged perpendicular to the axis direction of the housing 11, the inclined outrigger 21 forms a flow - guiding surface for guiding gas on its surface. By inclining the second end of the outrigger 21, the intake resistance of the impeller 30 can be reduced, and the performance of the centrifugal fan can be improved.

[0061] In this embodiment, a mounting hole 211 is provided near the second end of the outrigger 21. The outrigger 21 is connected to the mounting part 12 through the mounting hole 211 and a bolt assembly. It can be understood that the mounting hole 211 penetrates the outrigger 21, and on the basis of the inclination of the second end of the outrigger 21, the mounting part 12 is also inclined to further reduce the intake resistance of the impeller 30. By providing the mounting hole 211, the screw of the bolt assembly can pass through the outrigger 21, and the nut or nut can abut against the outrigger 21, thereby realizing the connection between the motor bracket 20 and the motor 10.

[0062] In this embodiment, the first end of the outrigger 21 is parallel to the plane where the volute 50 is located. A bending part 212 is provided on the outrigger 21, and a reinforcing rib 60 is also provided between the first end of the outrigger 21 and the bending part 212.

[0063] Specifically, the first end of the outrigger 21 is a flat plate, the bending part 212 is a plane at an angle with the first end of the outrigger 21, and the bending part 212 is located at the connection between the first section and the second section of the outrigger 21 to extend the outrigger 21 to the axis of the impeller 30 by bending. In addition, a reinforcing rib 60 is provided between the first end of the outrigger 21 and the bending part 212. The reinforcing rib 60 is in a triangular structure, and the two sides of the triangular structure are respectively welded to the first end of the outrigger 21 and the bending part 212 to form an integral body, so as to correspondingly improve the structural strength of the bending part 212. At the same time, the structural strength of the outrigger 21 is improved. The reinforcing rib 60 is a prior art and will not be elaborated here.

[0064] In this embodiment, a flanging structure 70 is provided at the edge of the outrigger 21. It can be understood that the flanging structure 70 is a prior art method of bending the edge of a plate to form a flange perpendicular to the plate. The flanging structure 70 can be realized through injection molding or stamping. The flanging structure 70 is provided at the edge of the second section of the outrigger 21 to further improve the structural strength of the outrigger 21.

[0065] In this embodiment, a profiling structure 80 is provided in the middle region of the support leg 21. It can be understood that the profiling structure 80 is a method in the prior art for stamping a sheet to enhance the strength of the sheet. This is the prior art and will not be elaborated here. The profiling structure 80 is provided in the middle region of the second section of the support leg 21 to further enhance the structural strength of this part of the support leg 21, thereby effectively supporting the motor 10 and preventing the motor 10 from falling off.

[0066] This embodiment also provides a range hood, which includes the above-mentioned motor assembly. The range hood includes the above-mentioned motor assembly to improve the performance of the centrifugal fan, reduce the intake resistance when the centrifugal fan works, and at the same time, reduce the vibration of the motor 10 affected by the impeller 30, thereby reducing the noise when the centrifugal fan works and improving the noise quality.

[0067] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A motor assembly, comprising a motor and a motor bracket, wherein the motor is arranged at the impeller axis of a centrifugal fan and is coaxially arranged with the impeller, characterized in that: The motor also includes: The motor is provided with a housing, wherein the rotor of the motor is located in the housing, and the rotor is coaxially arranged with the housing; a mounting portion is provided on the housing, and the mounting portion is connected to the motor bracket through a bolt assembly, and along the axial direction of the housing, the mounting portion forms an angle of 30-90° with the axis of the housing.

2. The motor assembly according to claim 1, characterized in that The shell includes a first shell and a second shell, the first shell and the second shell are arranged along the length direction of the shell and cover the outer peripheral side of the rotor, the mounting part is respectively arranged on the first shell and the second shell, and the first shell and the second shell are connected by the mounting part to form the shell.

3. The motor assembly according to claim 2, characterized in that A plurality of the mounting portions are arranged at intervals along the radial direction of the housing.

4. The motor assembly according to claim 1, characterized in that The motor assembly also includes a rubber pad, which is arranged between the mounting portion and the motor bracket.

5. The motor assembly according to claim 1, characterized in that The motor bracket includes a plurality of legs, wherein the first end of the leg is used to be connected to the volute of the centrifugal fan, and the second end of the leg forms an angle of 30-75° with the plane where the volute is located.

6. The motor assembly according to claim 5, characterized in that A mounting hole is provided near the second end of the supporting leg, and the supporting leg is connected to the mounting portion through the mounting hole and the bolt assembly.

7. The motor assembly according to claim 5, characterized in that The first end of the support leg is parallel to the plane where the volute is located, a bending portion is provided on the support leg, and a reinforcing rib is further provided between the first end of the support leg and the bending portion.

8. The motor assembly according to claim 5, characterized in that The edge of the supporting leg is provided with a flange structure.

9. The motor assembly according to claim 8, characterized in that A profiled structure is provided in the middle area of ​​the supporting leg.

10. A range hood, characterized in that: The range hood comprises a motor assembly as claimed in any one of claims 1 to 9.

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