Motor of fan system, fan system and range hood

Abstract

The utility model provides a fan system's motor, fan system and range hood, fan system includes volute, impeller and motor, motor includes stator, rotor and rotating shaft, stator is fixedly connected on the rotating shaft, the end portion of rotating shaft is equipped with the support disk that is connected with volute, and the rotor end cover is arranged along the axial interval between support disk and stator, and the rotor end cover is equipped with the impeller. The rotor end cover is connected with the impeller along the radial edge; a bearing and a rotor end cover are arranged on one axial side of the stator; the rotor end cover is in rolling connection with the rotating shaft through the bearing; or rotor end covers are arranged on the two sides of the stator in the axial direction. According to the motor of the fan system, the fan system and the range hood, the bearing is arranged on the single side of the stator instead of being arranged on the two sides of the stator, the number of the bearings is reduced, and the manufacturing cost of the motor is reduced; and the axial installation space is saved, the air inlet resistance of a fan system can be reduced, and therefore the performance of the whole machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a motor of a fan system, a fan system and a range hood. Background Art

[0002] In the structure of the range hood, the fan system is an important component, which is used to suck the oil smoke and exhaust the smoke. The fan system usually includes a volute, an impeller and a motor. The impeller is arranged in the volute, and the motor is arranged in the impeller. The motor includes a stator, a rotor and a rotating shaft. The stator is mounted on the rotating shaft and connected to the volute, so that the motor is fixed on the volute, and the rotor is connected to the impeller. When the motor is powered on, the rotor drives the impeller to rotate, and the impeller exhausts the smoke from the outlet of the volute through the exhaust channel between the impeller and the volute.

[0003] In the prior art, the rotating shaft of the motor usually needs to be installed with bearings at both ends so that the motor can be supported, but this increases the manufacturing cost and also makes the axial thickness of the motor thicker, affecting the air intake resistance of the fan system. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the motor of the fan system of the range hood occupies a large axial space and has a high manufacturing cost, and to provide a motor of the fan system, a fan system and a range hood.

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

[0006] A motor of a fan system, used for a range hood, the fan system comprising a volute, an impeller and the motor, the motor comprising a stator, a rotor and a rotating shaft, the stator being fixedly connected to the rotating shaft, an end of the rotating shaft being provided with a support plate connected to the volute, a rotor end cover being axially spaced apart from the support plate and the stator, and the radial edge of the rotor end cover being connected to the impeller;

[0007] The stator is provided with the bearing and the rotor end cover on one side along the axial direction, and the rotor end cover is rollingly connected with the rotating shaft through the bearing;

[0008] Alternatively, the stator is provided with the bearing on one side along the axial direction, and the stator is provided with the rotor end covers on both sides along the axial direction, wherein the rotor end cover on one side is rollingly connected to the rotating shaft through the bearing, and the rotor end cover on the other side is loosely matched with the bearing.

[0009] In this solution, the motor of the fan system reduces the number of bearings and the manufacturing cost of the motor by setting bearings on one side of the stator instead of on both sides; it also saves axial installation space, can reduce the air intake resistance of the fan system, and thus improve the performance of the whole machine. Among them, the motor is connected to the volute through a support plate, and the motor is fixed in the volute to ensure the stability of the motor without being affected by the reduction of the bearing. The rotor end cover is rollingly connected to the rotating shaft through the bearing, so that the rotor end cover can drive the impeller to rotate around the rotating shaft to achieve exhaust. When the rotor end cover is set on one side (that is, only one side has a rotor end cover), the axial space is further saved; the internal components of the motor can be encapsulated by the plastic sealing process to improve insulation, temperature resistance and reduce motor noise; and because there is no rotor end cover on one side, it is convenient for the motor to be disassembled for maintenance, replacement or cleaning. When rotor end covers are provided on both sides, it is beneficial to the stability of the support and reduce external interference with the internal components of the motor.

[0010] Preferably, one end of the rotating shaft is an outlet end of the winding of the stator, and the stator is provided with the bearing and the rotor end cover along the axial direction and only on the side opposite to the outlet end.

[0011] In this solution, the motor is only provided with bearings and rotor end covers on one side, and the bearings and rotor end covers are arranged on the side opposite to the output end, which can avoid entanglement between the moving parts (bearings and rotor end covers, etc.) and the output wires of the stator winding, thereby reducing the complexity of motor assembly.

[0012] Preferably, the portion of the rotating shaft located at the outlet end is provided with an axial inner hole in the axial direction, and the rotating shaft is provided with three spaced side holes in a cross section perpendicular to the axial direction, and the three side holes are connected to the axial inner hole.

[0013] In this solution, the three-phase wires of the motor pass through three side holes set at intervals and then pass through the axial inner hole; compared with the single-hole wiring outlet method, this motor uses three side holes to avoid the risk of short circuit between phases and improve the safety and reliability of the motor.

[0014] Preferably, the support plate includes a first support plate located on the side opposite to the outlet end and a second support plate located on the side of the outlet end, the first support plate is arranged in the internal cavity of the volute, and the bearing and the rotor end cover are arranged between the first support plate and the stator; the second support plate is arranged at the end of the volute, and the center of the second support plate is provided with an outlet hole connected to the axial inner hole.

[0015] In this solution, the motor is connected to the volute through the support plates at both ends of the rotating shaft, which further improves the stability of the motor installation without reducing the stability of the motor due to the reduction of bearings. A wire outlet hole is set at the center of the second support plate so that the phase line of the motor can pass through the wire outlet hole and be connected to an external power supply.

[0016] Preferably, at least one end of the rotating shaft is provided with at least one outer plane along the circumference of the rotating shaft, and at least one of the first support plate and the second support plate includes a sleeve sleeved on the end of the rotating shaft, and the inner wall of the sleeve is provided with an inner plane matching the outer plane of the rotating shaft.

[0017] In this solution, the shaft and the sleeves of the two support disks hinder the circular rotation of the sleeves through the cooperation of the inner plane and the outer plane, so that the support disks cannot rotate on the shaft to avoid slipping.

[0018] Preferably, one end of the rotating shaft is the outlet end of the winding of the stator, and the stator is provided with the bearing along the axial direction and only on the side opposite to the outlet end; the stator is provided with the rotor end cover on both sides along the axial direction, wherein the rotor end cover on one side is rollingly connected with the rotating shaft through the bearing, and the rotor end cover on the other side is arranged at the outlet end and is loosely matched with the bearing.

[0019] In this solution, the motor is only provided with a bearing on the side opposite to the outlet terminal, but is provided with a rotor end cover on both sides, and the rotor end cover without a bearing connection is arranged at the outlet terminal to isolate the influence of the outside of the outlet terminal on the inside of the motor.

[0020] Preferably, the stator comprises an inner hole, and the inner hole is interference fit with the rotating shaft.

[0021] In this solution, the inner hole of the stator and the rotating shaft adopt an interference fit to improve the reliability of the connection between the stator and the rotating shaft.

[0022] Preferably, the rotor end cover is made of magnetic conductive material, and / or the inner surface of the rotor end cover is affixed with magnetic steel.

[0023] In this solution, the rotor end cover can be made of magnetic conductive material and / or magnetic steel is attached to the inner surface to make the rotor have magnetic conductive function. When the rotor end cover is made of suitable magnetic conductive material, the rotor in the motor can be without iron core, saving materials and reducing costs.

[0024] A fan system comprises a volute and an impeller. The impeller is arranged in the volute, and the motor as described above is installed in the impeller.

[0025] In this solution, the fan system adopts the above-mentioned motor to achieve the setting of bearings on one side of the stator instead of on both sides, thereby reducing the number of bearings and the manufacturing cost of the motor; it also saves axial installation space, can reduce the air intake resistance of the fan system, and thus improve the performance of the whole machine.

[0026] A range hood comprises the fan system as described above.

[0027] In this solution, the range hood reduces the number of bearings and the manufacturing cost of the motor through the above-mentioned fan system; it also saves axial installation space and can reduce the air intake resistance of the fan system, thereby improving the performance of the entire machine.

[0028] The positive progressive effect of the utility model is that the motor, the fan system and the range hood of the fan system realize the setting of bearings on one side of the stator instead of setting bearings on both sides, thereby reducing the number of bearings and reducing the manufacturing cost of the motor; it also saves axial installation space, can reduce the air intake resistance of the fan system, and thus improve the performance of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the motor and impeller assembly of Example 1 of the utility model.

[0030] Figure 2 This is a front view of the motor structure of Example 1 of the utility model.

[0031] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0032] Figure 4 It is a three-dimensional diagram of the rotating shaft structure of Example 1 of the utility model.

[0033] Figure 5 It is a front view of the rotating shaft structure of Example 1 of the utility model.

[0034] Figure 6 for Figure 5 Cross-sectional view along direction BB.

[0035] Description of reference numerals:

[0036] Impeller 1

[0037] Impeller bracket 11

[0038] Motor 2

[0039] Stator 3

[0040] Rotor 4

[0041] Reel 5

[0042] Outlet terminal 51

[0043] Axial inner hole 52

[0044] Side hole 53

[0045] Outer plane 54

[0046] Support plate 6

[0047] First support plate 61

[0048] Second support plate 62

[0049] Wire outlet hole 621

[0050] Sleeve 622

[0051] Rotor cover 7

[0052] Bearing 8 DETAILED DESCRIPTION

[0053] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0054] Example 1

[0055] This embodiment provides a motor 2 of a fan system for a range hood. The fan system is used to suck in the fumes and discharge the fumes. The fan system includes a volute (not shown), an impeller 1 and a motor 2. The impeller 1 is disposed in the inner cavity of the volute, and the motor 2 is included in the inner cavity of the impeller 1.

[0056] like Figure 1-6 As shown, the motor 2 includes a stator 3, a rotor 4 and a rotating shaft 5. The stator 3 is fixedly connected to the rotating shaft 5. A support plate 6 connected to the volute is provided at the end of the rotating shaft 5. A rotor end cover 7 is spaced apart between the support plate 6 and the stator 3 along the axial direction (i.e., the axial direction of the rotating shaft 5). The rotor end cover 7 is connected to the impeller 1 along the radial edge; a bearing 8 and a rotor end cover 7 are provided on one side of the stator 3 along the axial direction, and the rotor end cover 7 is rollingly connected to the rotating shaft 5 through the bearing 8.

[0057] Specifically, in this embodiment, the motor 2 is a flat motor 2, and accordingly, the rotor end cover 7 is a flat metal cover plate, and the radial edge of the rotor end cover 7 is connected to the impeller bracket 11 by bolts. Figure 3 The first support plate 61 on the left and the second support plate 62 on the right are both connected to the volute. Here, it should be noted that the stator 3, rotor 4 of the motor 2 and the volute and impeller of the fan system are prior art, and their specific structures can refer to the structural forms of the stator, rotor, volute and impeller in the prior art, which will not be repeated here.

[0058] In this embodiment, the bearing 8 and the rotor end cover 7 are only arranged on the left side of the rotating shaft 5 (i.e., the side close to the first support plate 61, which is also the side located in the inner cavity of the volute). In other embodiments, under the design concept of only arranging the bearing 8 on one side, according to different specific structures, the bearing 8 and the rotor end cover 7 connected thereto can also be arranged on the right side of the rotating shaft 5 (i.e., the side close to the second support plate 62). In other embodiments, the bearing 8 can also be arranged only on the left side of the rotating shaft 5, but there are two rotor end covers 7, which are arranged on both sides of the stator 3, respectively, wherein the rotor end cover 7 on one side is the same as the rotor end cover 7 of this embodiment, and is located on the left side of the rotating shaft 5, and is rollingly connected to the rotating shaft 5 through the bearing 8; the rotor end cover on the other side is located on the right side of the rotating shaft 5, and is fastened and connected to the rotor end cover 7 on the left side and the bracket 11 of the impeller at its radial edge by bolts, and the rotor end cover on the right side is in clearance with the bearing 8, so as to ensure that the rotor end cover on the right side will not be damaged by friction with the rotating shaft 5 during rotation, and the rotor end cover on the right side can also isolate the influence of the outside on the inside of the motor 2.

[0059] The motor 2 of the fan system reduces the number of bearings 8 and the manufacturing cost of the motor 2 by setting a bearing 8 on one side of the stator 3 instead of setting bearings 8 on both sides; it also saves axial installation space, can reduce the air intake resistance of the fan system, and thus improve the performance of the whole machine. Among them, the motor 2 is connected to the volute through the support plate 6, and the motor 2 is fixed in the volute to ensure the stability of the motor 2, which is not affected by the reduction of the bearing 8. The rotor end cover 7 is rollingly connected to the rotating shaft 5 through the bearing 8, so that the rotor end cover 7 can drive the impeller 1 to rotate around the rotating shaft 5 to achieve exhaust. When the rotor end cover 7 is set on one side (that is, only one side has the rotor end cover 7), the axial space is further saved; the internal components of the motor 2 can be encapsulated by the plastic sealing process to improve the insulation, temperature resistance and reduce the noise of the motor 2; and because there is no rotor end cover 7 on one side, it is convenient for the motor 2 to be disassembled and assembled for maintenance, replacement or cleaning. When the rotor end cover 7 is set on both sides, it is beneficial to the stability of the support and reduce the external interference with the internal components of the motor 2.

[0060] Among them, Figure 3 and Figure 4 As shown, one end of the rotating shaft 5 is the outlet terminal 51 of the winding of the stator 3. The three-phase wires for making the winding of the stator 3 pass through this outlet terminal 51, are connected to the external power supply, and are powered. As described above, in this embodiment, the bearing 8 and the rotor end cover 7 are only arranged on the left side of the rotating shaft 5 (i.e., the side opposite to the outlet terminal 51). With such a position design, it is possible to prevent the moving parts (such as the bearing 8 and the rotor end cover 7) located on the side opposite to the outlet terminal 51 from being entangled with the winding outlet wire passing through the outlet terminal 51, thereby ensuring the function of the motor 2 and reducing the complexity of the assembly of the motor 2.

[0061] Among them, Figure 4-6As shown, the portion of the rotating shaft 5 located at the outlet end 51 is provided with an axial inner hole 52 along the axial direction, and the rotating shaft 5 is provided with three spaced side holes 53 on a cross section perpendicular to the axial direction, and the three side holes 53 are connected with the axial inner hole 52. The three-phase wires of the motor 2 pass through the three spaced side holes 53 and then pass through the axial inner hole 52; compared with the single-hole outlet mode, the motor 2 uses three side holes 53 for outlet, which avoids the risk of short circuit between phases and improves the safety and reliability of the motor 2.

[0062] Among them, the first support disk 61 is located on the side opposite to the outlet terminal 51, and the second support disk 62 is located on the side of the outlet terminal 51. The first support disk 61 is arranged in the internal cavity of the volute, and the bearing 8 and the rotor end cover 7 are arranged between the first support disk 61 and the stator 3; the second support disk 62 is arranged at the end of the volute, and the center of the second support disk 62 is provided with an outlet hole 621 connected to the axial inner hole 52. The motor 2 is connected to the volute through the support disks 6 located at both ends of the rotating shaft 5, which further improves the stability of the installation of the motor 2, and does not reduce the stability of the motor 2 due to the reduction of the bearing 8. The outlet hole 621 is set in the center of the second support disk 62, so that the phase line of the motor 2 can pass through this outlet hole 621 and connect to the external power supply.

[0063] At least one end of the rotating shaft 5 is provided with at least one outer plane 54 along the circumference of the rotating shaft 5, and at least one of the first support plate 61 and the second support plate 62 includes a sleeve 622 sleeved on the end of the rotating shaft 5, and the inner wall of the sleeve 622 is provided with an inner plane (not shown in the figure) matching the outer plane 54 of the rotating shaft 5. Figure 4-6 As shown, both ends of the rotating shaft 5 of this embodiment are provided with outer planes 54 to form a D-shaped cross-sectional structure. The first support plate 61 and the second support plate 62 each have a sleeve 622. The sleeve 622 has a structure matching the D-shaped cross-section. The sleeves 622 of the rotating shaft 5 and the two support plates 6 hinder the circular rotation of the sleeves 622 through the cooperation of the inner plane and the outer plane 54, so that the support plates 6 cannot rotate on the rotating shaft 5 to avoid slipping.

[0064] The stator 3 includes an inner hole, and the inner hole is interference-fitted with the rotating shaft 5. The inner hole of the stator 3 and the rotating shaft 5 are interference-fitted to improve the reliability of the connection between the stator 3 and the rotating shaft 5.

[0065] In this embodiment, the rotor end cover 7 is made of a magnetic conductive material, and a magnetic steel is attached to the inner surface of the rotor end cover 7. The rotor end cover 7 can make the rotor 4 have a magnetic conductive function by using a magnetic conductive material and / or attaching a magnetic steel to the inner surface. Among them, when the rotor end cover 7 is made of a suitable magnetic conductive material, the rotor 4 in the motor 2 can have no iron core, saving materials and reducing costs.

[0066] Example 2

[0067] This embodiment provides a fan system, which includes a volute and an impeller 1, wherein the impeller 1 is arranged in the volute, and the motor 2 as in Embodiment 1 is installed in the impeller 1. By adopting the above-mentioned motor 2, the fan system realizes that the bearing 8 is arranged on one side of the stator 3 instead of the bearing 8 on both sides, thereby reducing the number of bearings 8 and reducing the manufacturing cost of the motor 2; it also saves axial installation space, can reduce the air intake resistance of the fan system, and thus improve the performance of the whole machine.

[0068] Example 3

[0069] This embodiment provides a range hood, which includes a fan system as in Embodiment 2. The range hood reduces the number of bearings 8 and the manufacturing cost of the motor 2 through the fan system, and also saves axial installation space, which can reduce the air intake resistance of the fan system, thereby improving the performance of the whole machine.

[0070] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A motor of a fan system, used for a range hood, the fan system comprising a volute, an impeller and the motor, the motor comprising a stator, a rotor and a rotating shaft, the stator being fixedly connected to the rotating shaft, the end of the rotating shaft being provided with a support plate connected to the volute, a rotor end cover being axially spaced apart from the support plate and the stator, the radial edge of the rotor end cover being connected to the impeller; characterized in that: The stator is provided with a bearing and the rotor end cover on one side along the axial direction, and the rotor end cover is rollingly connected with the rotating shaft through the bearing; Alternatively, the stator is provided with the bearing on one side along the axial direction, and the stator is provided with the rotor end covers on both sides along the axial direction, wherein the rotor end cover on one side is rollingly connected to the rotating shaft through the bearing, and the rotor end cover on the other side is loosely matched with the bearing.

2. The motor of the fan system according to claim 1, characterized in that: One end of the rotating shaft is the outlet end of the winding of the stator, and the stator is provided with the bearing and the rotor end cover along the axial direction and only on the side opposite to the outlet end.

3. The motor of the fan system according to claim 2, characterized in that: The part of the rotating shaft located at the outlet end is provided with an axial inner hole in the axial direction, and the rotating shaft is provided with three side holes arranged at intervals in a cross section perpendicular to the axial direction, and the three side holes are communicated with the axial inner hole.

4. The motor of the fan system according to claim 3, characterized in that: The support plate includes a first support plate located on the side opposite to the outlet end and a second support plate located on the side of the outlet end, the first support plate is arranged in the internal cavity of the volute, the bearing and the rotor end cover are arranged between the first support plate and the stator; the second support plate is arranged at the end of the volute, and the center of the second support plate is provided with an outlet hole connected to the axial inner hole.

5. The motor of the fan system according to claim 4, characterized in that: At least one end of the rotating shaft is provided with at least one outer plane along the circumference of the rotating shaft, and at least one of the first supporting plate and the second supporting plate includes a sleeve sleeved on the end of the rotating shaft, and the inner wall of the sleeve is provided with an inner plane matching the outer plane of the rotating shaft.

6. The motor of the fan system according to claim 1, characterized in that: One end of the rotating shaft is the outlet end of the winding of the stator, and the stator is provided with the bearing along the axial direction and only on the side opposite to the outlet end; the stator is provided with the rotor end covers on both sides along the axial direction, wherein the rotor end cover on one side is rollingly connected with the rotating shaft through the bearing, and the rotor end cover on the other side is arranged at the outlet end and is loosely matched with the bearing.

7. The motor of the fan system according to claim 1, characterized in that: The stator comprises an inner hole, and the inner hole is interference fit with the rotating shaft.

8. The motor of the fan system according to claim 1, characterized in that: The rotor end cover is made of magnetic conductive material, and / or the inner surface of the rotor end cover is affixed with magnetic steel.

9. A fan system, comprising a volute and an impeller, wherein the impeller is arranged in the volute, characterized in that: The impeller is equipped with a motor as claimed in any one of claims 1 to 8.

10. A range hood, characterized in that: The range hood comprises the fan system as claimed in claim 9.

Images