CN215344175U - Outer rotor motor support, fan and range hood - Google Patents
Outer rotor motor support, fan and range hood Download PDFInfo
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- CN215344175U CN215344175U CN202121867271.9U CN202121867271U CN215344175U CN 215344175 U CN215344175 U CN 215344175U CN 202121867271 U CN202121867271 U CN 202121867271U CN 215344175 U CN215344175 U CN 215344175U
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- shaft sleeve
- rotor motor
- volute
- support
- outer rotor
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Abstract
The utility model provides an outer rotor motor support, a fan and a range hood, and relates to the technical field of range hoods, wherein the outer rotor motor support comprises a shaft sleeve and mounting support pieces arranged on the circumferential side wall of the shaft sleeve; one end, far away from the shaft sleeve, of the mounting support is used for being connected with the volute, and the projection of the end in the axial direction of the shaft sleeve is located on the lateral side of the end face, back to the motor, of the shaft sleeve. The outer rotor motor support is sunken towards the inside of the volute, and when an impeller of the fan rotates, airflow can be sucked into the volute firstly and then is in contact with the outer rotor motor support, so that the inflow pressure of the airflow entering the volute is reduced, and the flow loss is avoided. The axial position of axle sleeve is compared and is more close to external rotor electric machine in this surface, and external rotor electric machine uses shorter motor shaft just can with the axle sleeve connection, and the length demand of external rotor electric machine's motor shaft reduces, has practiced thrift the cost, and what produce when shorter motor shaft rotates rocks littleer, and the operating stability of fan improves.
Description
Technical Field
The utility model relates to the technical field of kitchen appliances, in particular to an outer rotor motor support, a fan and a range hood.
Background
The fan of the European-style range hood is arranged above the smoke collection cavity, and oil smoke is sucked by inlets at two sides of the fan after passing through the smoke collection cavity and is discharged after being mixed inside the volute. The range hood is driven by an inner rotor motor or an outer rotor motor, wherein the outer rotor motor is arranged on a fan impeller central disc, so that air inlet at two sides of a fan is uniform.
In the prior art, the motor shaft of the outer rotor motor is directly fixed at an air inlet on the side surface of the volute by the outer rotor motor through the outer rotor motor support, on one hand, airflow impacts the motor support after the fan is started, and inflow resistance when the airflow enters the volute is increased; on the other hand, the motor shaft of the outer rotor motor is too long, so that the outer rotor motor is easy to shake during rotation, and the running stability of the fan is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an outer rotor motor support, a fan and a range hood, and aims to solve the technical problems that the inflow resistance of air flow of the existing fan entering a volute is large and the running stability of the fan is poor.
The utility model provides an outer rotor motor support which comprises a shaft sleeve and a mounting support piece arranged on the circumferential side wall of the shaft sleeve;
one end, far away from the shaft sleeve, of the mounting support is used for being connected with the volute, and the projection of the end in the axial direction of the shaft sleeve is located on the lateral side of the end face, back to the motor, of the shaft sleeve.
Furthermore, the number of the installation supporting pieces is multiple, and the installation supporting pieces are arranged at intervals along the circumferential side wall of the shaft sleeve.
Furthermore, a plurality of the installation supporting pieces are uniformly distributed along the circumferential direction of the shaft sleeve.
Further, the mounting support comprises a mounting section and a supporting section which are connected with each other;
one end, far away from the mounting section, of the support section is connected with the circumferential side wall of the shaft sleeve, and the mounting section is used for being connected with a volute.
Further, the plane of the mounting section is perpendicular to the axial direction of the shaft sleeve.
Furthermore, the support section is of a spiral structure, and the rotating direction of the support section is the same as the rotating direction of the fan.
Further, the intersection line of the supporting section and the circumferential side wall of the shaft sleeve is a straight line, and the included angle alpha range between the intersection line and the axis of the shaft sleeve is as follows: 0 to 30 degrees.
Furthermore, the axial distance between one end of the support section, which is far away from the shaft sleeve, and the end face of the shaft sleeve, which faces away from the motor, is H, the distance from one end of the support section, which is far away from the shaft sleeve, to the axis of the shaft sleeve is R, and H/R is less than or equal to 0.4.
Further, the value range of H/R is 0.1-0.3.
The fan provided by the utility model comprises the outer rotor motor support.
Further, the fan also comprises an outer rotor motor, an impeller and a volute;
the impeller is arranged on the outer rotor motor, and the outer rotor motor is arranged on the side surface of the volute through the outer rotor motor bracket;
among the plurality of mounting support members, the mounting support member closest to the volute outlet forms an included angle beta between a center line of a projection of the volute on the side surface of the volute and a volute tongue axis tangent line of the volute, and the included angle beta is smaller than or equal to 35 degrees.
Further, the value range of the beta is 10-25 degrees.
The range hood provided by the utility model comprises the fan.
The utility model provides an outer rotor motor support which comprises a shaft sleeve and a mounting support piece arranged on the circumferential side wall of the shaft sleeve; one end, far away from the shaft sleeve, of the mounting support is used for being connected with the volute, and the projection of the end in the axial direction of the shaft sleeve is located on the lateral side of the end face, back to the motor, of the shaft sleeve.
Compared with the prior art, the shaft sleeve of the outer rotor motor support is used for fixing the motor shaft of the outer rotor motor, one end of the mounting support piece, which is far away from the shaft sleeve, is used for being fixedly connected with the volute, and the projection of the end in the axial direction of the shaft sleeve is in the lateral direction of the end face, back to the motor, of the shaft sleeve. The end, far away from the shaft sleeve, of the mounting support piece is used for being fixedly connected with the volute, the shaft sleeve is located on the inner side of the volute air inlet after connection, the outer rotor motor support is sunken towards the inside of the volute from the outside to the inside of the volute, when an impeller of the fan rotates, airflow can be sucked into the volute firstly and then contacts with the outer rotor motor support, inflow pressure of the airflow entering the volute is reduced, and flowing loss is avoided. After the outer rotor motor support is installed, one end, far away from the shaft sleeve, of the installation supporting piece is attached to the surface of the volute, the axial position of the shaft sleeve is closer to the outer rotor motor than the surface, and the outer rotor motor can be connected with the shaft sleeve through a shorter motor shaft.
The fan provided by the utility model comprises the outer rotor motor support, so that the fan also has the advantages of the outer rotor motor support.
The range hood provided by the utility model comprises the fan, so that the range hood also has the advantages of the fan.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a structural view of an outer rotor motor support provided in an embodiment of the present invention;
fig. 2 is a top view of an outer rotor motor support provided in an embodiment of the present invention;
fig. 3 is a side view of an outer rotor motor support according to an embodiment of the present invention;
FIG. 4 is a block diagram of a blower according to an embodiment of the present invention;
FIG. 5 is a sectional view taken along line A-A in FIG. 4;
fig. 6 is a structural diagram of a range hood according to an embodiment of the present invention.
Icon: 1-shaft sleeve; 2-a support section; 3-mounting a section; 4-a volute; 5-smoke collecting cavity; 6-impeller; 7-external rotor motor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the external rotor motor support provided in this embodiment includes a shaft sleeve 1 and a mounting support disposed on a circumferential side wall of the shaft sleeve 1; one end of the mounting support part, which is far away from the shaft sleeve 1, is used for being connected with the volute casing 4, and the projection of the end in the axial direction of the shaft sleeve 1 is positioned on the lateral side of the end surface, which faces away from the motor, of the shaft sleeve 1.
Compared with the prior art, the shaft sleeve 1 of the outer rotor motor support is used for fixing the motor shaft of the outer rotor motor 7, one end of the mounting support piece, which is far away from the shaft sleeve 1, is used for being fixedly connected with the volute 4, and the projection of the end in the axial direction of the shaft sleeve 1 is in the lateral direction of the end surface of the shaft sleeve 1, which is back to the motor. The end, far away from the shaft sleeve 1, of the mounting support piece is used for being fixedly connected with the volute 4, the shaft sleeve 1 is located on the inner side of an air inlet of the volute 4 after connection, the outer rotor motor support is sunken towards the inner portion of the volute 4 from the direction of the air inlet of the volute 4 from outside to inside, and when an impeller 6 of the fan rotates, airflow can be sucked into the volute 4 firstly and then contacts with the outer rotor motor support, so that the inflow pressure of the airflow entering the volute 4 is reduced, and the flow loss is avoided. After the outer rotor motor support is installed, one end, far away from the shaft sleeve 1, of the installation supporting piece is attached to the surface of the volute 4, the axial position of the shaft sleeve 1 is closer to the outer rotor motor 7 than the surface, and the outer rotor motor 7 can be connected with the shaft sleeve 1 through a shorter motor shaft.
The number of the mounting supports may be plural, and the plural mounting supports are arranged at intervals along the circumferential side wall of the shaft sleeve 1. Preferably, a plurality of the mounting supports are uniformly distributed along the circumferential direction of the shaft sleeve 1. A plurality of installation support piece are evenly arranged along the circumference lateral wall of axle sleeve 1, and when the fan rotated, the atress was more even, avoided resonance, noise reduction.
In this embodiment, the number of the mounting support members is three, and an included angle between two adjacent mounting support members along the circumferential direction of the shaft sleeve 1 is 120 °.
The outer rotor motor support provided by the embodiment comprises a shaft sleeve 1 and a plurality of mounting support pieces arranged on the circumferential direction of the shaft sleeve 1; the mounting support comprises a mounting section 3 and a supporting section 2 which are connected with each other;
one end of the supporting section 2, which is far away from the mounting section 3, is connected with the circumferential side wall of the shaft sleeve 1, and when the shaft sleeve 1 is axially observed, the projection of the mounting section 3 is positioned on the lateral side of the end surface of the shaft sleeve 1, namely, the projection extends out of the end surface of the shaft sleeve 1, which is far away from the motor, and the mounting section 3 is used for being connected with the volute 4.
Compared with the prior art, the shaft sleeve 1 of the outer rotor motor support is used for fixing a motor shaft of a motor, the mounting section 3 is used for being fixedly connected with the volute 4, the mounting section 3 is located on one side of the axial direction of the shaft sleeve 1, after the outer rotor motor support is mounted, the mounting section 3 is attached to the surface of the volute 4, and the axial position of the shaft sleeve 1 is closer to the motor, so that the outer rotor motor support can save the length of the motor shaft, and the rotating stability of the impeller 6 is enhanced. When the impeller 6 of the fan rotates, airflow is sucked into the fan, and the fixed point of the fan extends into the fan through the outer rotor motor support, so that inflow resistance is reduced, flow loss is avoided, and fan noise is reduced.
In this embodiment, the plane of the mounting section 3 is perpendicular to the axial direction of the shaft sleeve 1. In particular, the plane of the mounting section 3 is perpendicular to the axial extension direction of the shaft sleeve 1, the mounting section 3 is used for connecting with the side surface of the volute 4, and in the embodiment, the three mounting sections 3 are in one plane so as to be better connected with the side surface of the volute 4.
The support section 2 is of a spiral structure, and the rotating direction of the support section 2 is the same as the rotating direction of the fan.
Specifically, the support section 2 of the outer rotor motor support is of a spiral structure, the shape of the support section is similar to that of a blade, the support section has a three-dimensional twisting characteristic, and the support section has a support effect and a flow guide effect. Meanwhile, the mounting section 3 is attached to the outer surface of the volute 4, and the axial position of the shaft sleeve 1 is closer to the motor, so that the length of the motor shaft can be saved by the outer rotor motor support, and the rotation stability of the impeller 6 is enhanced. When the impeller 6 of the fan rotates, airflow is sucked into the fan and forms prewhirl after passing through the supporting section 2, so that the larger attack angle between the airflow and the inlet edge of the impeller 6 of the fan is prevented, the flow loss is reduced, and the flow noise is reduced.
In this embodiment, the intersection line of the circumferential side wall of the support section 2 and the shaft sleeve 1 is a straight line, and the range of the included angle α between the intersection line and the axis of the shaft sleeve 1 is as follows: 0 to 30 degrees.
Specifically, the supporting section 2 in the outer rotor motor bracket is similar to an inlet guide vane, an intersection line of the supporting section 2 and the outer side surface of the shaft sleeve 1 is a straight line, and an included angle alpha between the intersection line and a motor shaft and an extending direction is in a range of 0-30 degrees. It should be noted that the inclination direction of the intersecting line is the same as the rotation direction of the fan, as shown in fig. 3, that is, the intersecting line may be inclined to the left or inclined to the right, and the inclination direction corresponds to the rotation direction of the fan, and the value of the specific included angle is determined by the rotation speed of the fan and the air volume of the fan.
The axial distance between one end of the support section 2 far away from the shaft sleeve 1 and the end face of the shaft sleeve 1 back to the motor is H, the distance from one end of the support section 2 far away from the shaft sleeve 1 to the axis of the shaft sleeve 1 is R, and H/R is less than or equal to 0.4. Preferably, the value range of H/R is 0.1-0.3.
Specifically, in the present embodiment, the axial position of the shaft sleeve 1 is different from that of the mounting section 3, and the mounting section 3 is fixed on the side plate of the volute 4, so that the position of the shaft sleeve 1 is closer to the outer rotor motor 7 than the mounting section 3, thereby ensuring the stability of the rotating structure. However, an excessively large axial distance may cause the strength of the overall structure of the outer rotor motor support to be weakened, and therefore, the length of the projection of the support section 2 in the axial direction of the shaft sleeve 1 and in each direction of the diameter of the shaft sleeve 1 needs to be defined, specifically, the axial distance between one end of the support section 2 away from the shaft sleeve 1 and the end surface of the shaft sleeve 1 facing away from the motor is H, the distance between one end of the support section 2 away from the shaft sleeve 1 and the axis of the shaft sleeve 1 is R, where H/R cannot be greater than 0.4, and preferably, the ratio of H/R may be selected in a range of 0.1-0.3.
As shown in fig. 4 and 5, the blower provided in this embodiment includes the above-mentioned outer rotor motor bracket.
Specifically, the fan further comprises an outer rotor motor 7, an impeller 6 and a volute 4; the impeller 6 is arranged on the outer rotor motor 7, and the outer rotor motor 7 is arranged on the side surface of the volute 4 through an outer rotor motor bracket.
Specifically, the outer rotor motor 7 and the impeller 6 are assembled together, and the combined integral structure is fixed on the side surface of the volute 4 by the outer rotor fan bracket. Under the working state of the range hood, the oil smoke mixed gas is sucked by the smoke collection cavity 5 and enters the impeller 6 from the air inlets at two sides of the volute 4. Before entering the impeller 6, the airflow generates prerotation through the support section 2, and the airflow attack angle of the inlet side of the impeller 6 is reduced, so that the flow loss is reduced, and the impact noise is reduced. As can be seen from fig. 5, because the axial positions of the shaft sleeve 1 and the mounting section 3 are different, the shaft sleeve 1 is closer to the outer rotor motor 7, so that the length of the motor shaft can be shortened, the material and processing costs can be reduced, and the stability of the motor rotation can be improved.
Among the plurality of mounting supports, the mounting support closest to the outlet of the volute 4 forms an included angle beta with the volute tongue axis tangent of the volute 4, and the included angle beta is less than or equal to 35 degrees. Preferably, the value of the beta ranges from 10 degrees to 25 degrees.
The airflow flows into the fan from below, and the side near the outlet of the volute 4 is easier to be discharged, so that the side has larger relative air volume. In order to reduce the resistance effect of the outer rotor fan support to the air flow, the mounting support closest to the outlet of the volute 4 does not influence the air inlet on the large flow side as much as possible, so that the circumferential mounting position of the outer rotor fan support is necessarily restricted, as shown in fig. 4, an included angle between the center line of the mounting support of the outer rotor fan support closest to the outlet of the volute 4 and the volute tongue axial tangent of the volute 4 is defined as β, and the value of the included angle cannot be greater than 35 °. Preferably, β is selected in the range of 10 ° -25 °. Wherein, the volute tongue axis tangent is a volute tongue curved surface tangent led out from the axis center.
As shown in fig. 6, the range hood provided by the present invention includes the above fan, and therefore, the range hood also has the advantages of the above fan, which is not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (13)
1. The outer rotor motor support is characterized by comprising a shaft sleeve (1) and a mounting support piece arranged on the circumferential side wall of the shaft sleeve (1);
one end, far away from the shaft sleeve (1), of the mounting support is used for being connected with a volute (4), and the projection of the end in the axial direction of the shaft sleeve (1) is located on the lateral side of the end face, back to the motor, of the shaft sleeve (1).
2. The external rotor motor support according to claim 1, wherein the number of the mounting supports is plural, and the plural mounting supports are arranged at intervals along a circumferential side wall of the shaft sleeve (1).
3. The external rotor motor support according to claim 2, wherein a plurality of the mounting supports are evenly distributed along the circumferential direction of the shaft sleeve (1).
4. The external rotor motor support according to claim 1, wherein the mounting support comprises a mounting section (3) and a support section (2) connected to each other;
one end, far away from the mounting section (3), of the supporting section (2) is connected with the circumferential side wall of the shaft sleeve (1), and the mounting section (3) is used for being connected with a volute (4).
5. The external rotor motor support according to claim 4, characterized in that the plane of the mounting section (3) is perpendicular to the axial direction of the shaft sleeve (1).
6. The external rotor motor support according to claim 4, wherein the support section (2) is of a spiral structure, and the rotation direction of the support section (2) is the same as the rotation direction of the fan.
7. The external rotor motor support according to claim 6, wherein the intersection line of the support section (2) and the circumferential side wall of the shaft sleeve (1) is a straight line, and the included angle α between the intersection line and the axis of the shaft sleeve (1) is in the range: 0 to 30 degrees.
8. The external rotor motor support according to any one of claims 4-7, wherein an axial distance between an end of the support section (2) remote from the bushing (1) and an end surface of the bushing (1) facing away from the motor is H, a distance from an end of the support section (2) remote from the bushing (1) to an axis of the bushing (1) is R, and H/R is less than or equal to 0.4.
9. The external rotor motor support of claim 8, wherein the value of H/R ranges from 0.1 to 0.3.
10. A fan comprising the outer rotor motor support according to any one of claims 1 to 9.
11. The fan according to claim 10, further comprising an outer rotor motor (7), an impeller (6) and a volute (4);
the impeller (6) is arranged on the outer rotor motor (7), and the outer rotor motor (7) is arranged on the side surface of the volute (4) through the outer rotor motor bracket;
the included angle between the center line of the projection of the mounting support closest to the volute (4) outlet on the side surface of the volute (4) and the volute tongue axis tangent of the volute (4) is beta, and the beta is less than or equal to 35 degrees.
12. The fan of claim 11, wherein β is between 10 ° and 25 °.
13. A range hood comprising the fan of any one of claims 10-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867271.9U CN215344175U (en) | 2021-08-10 | 2021-08-10 | Outer rotor motor support, fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121867271.9U CN215344175U (en) | 2021-08-10 | 2021-08-10 | Outer rotor motor support, fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215344175U true CN215344175U (en) | 2021-12-28 |
Family
ID=79577119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121867271.9U Active CN215344175U (en) | 2021-08-10 | 2021-08-10 | Outer rotor motor support, fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215344175U (en) |
-
2021
- 2021-08-10 CN CN202121867271.9U patent/CN215344175U/en active Active
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