CN220551288U - Impeller of centrifugal fan, centrifugal fan and range hood - Google Patents
Impeller of centrifugal fan, centrifugal fan and range hood Download PDFInfo
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- CN220551288U CN220551288U CN202321005059.0U CN202321005059U CN220551288U CN 220551288 U CN220551288 U CN 220551288U CN 202321005059 U CN202321005059 U CN 202321005059U CN 220551288 U CN220551288 U CN 220551288U
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- impeller
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- 238000009434 installation Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model discloses an impeller of a centrifugal fan, which comprises a front ring (100); a rear ring (200) disposed opposite to the front ring (100); a blade (1) provided between the front ring (100) and the rear ring (200) and including a blade body (11) and a blade trailing edge portion (12) located on the outlet side of the blade body (11); the blade trailing edge (12) is arranged movable relative to the blade body (11) and further comprises a motor (2), an output (21) of the motor (2) being in driving connection with the blade trailing edge (12). The fan blade has the advantages that the position of the tail edge part of the blade can be adjusted, and the fan blade can adapt to different fan working conditions. The utility model also discloses a centrifugal fan and a range hood, which have the advantages of being capable of adjusting the position of the tail edge and adapting to different fan working conditions.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to an impeller of a centrifugal fan, the centrifugal fan and a range hood.
Background
The centrifugal fan is a device for increasing the pressure of gas and discharging the gas by means of input mechanical energy. For example, a range hood discharges oil smoke through a centrifugal fan.
The blades of the centrifugal fan comprise a fixed part and a tail edge part (namely, a blade outlet edge), and the change of the tail edge part has direct influence on parameters such as air quantity, air pressure, noise and the like of the centrifugal fan, and the parameters correspond to different working conditions of the centrifugal fan respectively. For example, chinese utility model with application number CN201320779032.7 (publication number CN 203670271U) discloses an impeller of a centrifugal fan, which includes a front ring and a rear ring, a plurality of blades are fixed between the front ring and the rear ring, and an outlet end of each blade is formed by a plurality of saw teeth to form a wave saw tooth shape. The wave-shaped saw-tooth structure is arranged at the outlet end (tail edge) of the blade, so that the falling position of wake vortexes at the tail edge of the blade is changed, the distance between vortex cores is increased, disturbance of falling vortexes to wake flow is restrained, and aerodynamic noise caused by unsteady pressure pulsation and wake vortexes on the surface of the blade is reduced.
However, the position of the tail edge of the blade is fixed, and the blade cannot adapt to different fan working conditions.
Disclosure of Invention
The first technical problem to be solved by the utility model is to provide an impeller of a centrifugal fan, which can adjust the position of the tail edge part and adapt to different fan working conditions, aiming at the current state of the art.
The second technical problem to be solved by the utility model is to provide a centrifugal fan.
The third technical problem to be solved by the utility model is to provide a range hood.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: an impeller of a centrifugal fan comprises
A front ring;
a rear ring arranged opposite to the front ring;
a blade disposed between the front ring and the rear ring, the blade including a blade body and a blade trailing edge portion located on an outlet side of the blade body;
the method is characterized in that: and also comprises
The blade tail edge part is arranged to be movable relative to the blade body, and the blade further comprises a motor, and the output end of the motor is in driving connection with the blade tail edge part.
In order not to cause spatial interference to the blade, the motor is arranged outside the front ring or the rear ring, and the output end of the motor passes through the corresponding front ring or rear ring and is connected with the side wall of the tail edge part of the blade. Thus, the motor does not cause spatial interference with the blades.
The connection structure between the motor and the tail edge part can be various, specifically, the end part of the blade body is provided with a first installation part, and the first installation part is provided with a first installation groove or a first installation hole;
the tail edge part of the blade is provided with a first mounting shaft;
the output shaft of the motor is fixed with one end of the first installation shaft relatively, and the other end of the first installation shaft is movably inserted into the first installation groove or the first installation hole of the first installation part and circumferentially rotates around the axis where the motor is located. When the motor works, the first mounting shaft rotates relative to the first mounting part, and the tail edge part is driven to move.
In order to facilitate the rotation of the trailing edge part, the end part of the blade body is provided with second installation parts which are distributed at intervals with the first installation parts, and the second installation parts are provided with second installation grooves or second installation holes;
the blade tail edge part is provided with second installation shafts which are distributed at intervals with the first installation shafts, and one end of each second installation shaft is movably inserted into a second installation groove or a second installation hole of each second installation part and circumferentially rotates around the axis where the second installation shaft is located. Thus, by providing the second mounting shaft, the trailing edge portion is facilitated to rotate.
The connection structure between the motor and the tail edge part can be various, specifically, one end of the tail edge part of the blade adjacent to the blade body is provided with a concave part which is opened towards the blade body and is used for the blade body to be inserted, and the tail edge part of the blade moves along the blade body under the action of the motor. Thus, the motor works to drive the tail edge part to move along the body.
In order to drive the tail edge part to move, the utility model also comprises
And the connecting rod is respectively and relatively fixed with the side wall of the tail edge part of the blade and the output end of the motor. Thus, the motor acts on the connecting rod, and the connecting rod acts on the tail edge part to drive the tail edge part to move.
In order to prevent the interference on the space caused by the blades, the blades are at least two and are distributed at intervals, the two adjacent blades are respectively marked as a first blade and a second blade, the second blade is positioned at the front side of the first blade along the airflow flowing direction, and the bottom of the second blade is provided with an avoidance opening for avoiding a connecting rod connected with the tail edge part of the first blade. Thus, the avoidance port is arranged, so that the blade is prevented from being interfered in space.
The shape of the edge of the trailing edge portion may be varied, and the edge of the trailing edge portion of the blade may be wavy. The edge of the trailing edge portion may also be serrated.
The utility model adopts the technical proposal for solving the second technical problem that: a centrifugal fan, characterized in that: including the impeller of a centrifugal fan as described above.
The utility model adopts the technical proposal for solving the third technical problem that: a range hood, characterized in that: including the impeller of a centrifugal fan as described above.
Compared with the prior art, the utility model has the advantages that: through setting up the motor, the output of motor links to each other with blade trailing edge portion, and drives the relative blade body activity of blade trailing edge portion, adjusts the position of blade trailing edge portion through the motor like this, and the impeller of this centrifugal fan can adapt to different fan operating modes.
Drawings
FIG. 1 is a schematic perspective view of a centrifugal fan according to an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a centrifugal fan impeller according to an embodiment of the present utility model;
FIG. 3 is a schematic view showing an assembly of a blade and a motor according to a first embodiment of the present utility model;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is an enlarged schematic view of portion B of FIG. 3;
FIG. 6 is an exploded view of FIG. 3;
FIG. 7 is an enlarged schematic view of portion C of FIG. 6;
FIG. 8 is an enlarged schematic view of portion D of FIG. 6;
FIG. 9 is a schematic perspective view of a centrifugal fan impeller according to a second embodiment of the present utility model;
FIG. 10 is a schematic diagram illustrating assembly of a blade, motor, and connecting rod in accordance with a second embodiment of the present utility model;
FIG. 11 is an exploded view of FIG. 10;
FIG. 12 is a schematic view of the positions of three blades, three connecting rods, etc.;
FIG. 13 is an enlarged schematic view of portion E of FIG. 12;
fig. 14 is a schematic view of another angle of fig. 13.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
Example 1
Referring to fig. 1-8, a preferred embodiment of the present utility model is shown. The impeller of the centrifugal fan comprises a front ring 100, a rear ring 200 and blades 1.
Wherein the rear loop 200 is disposed opposite the front loop 100.
The blade 1 is arranged between the front ring 100 and the rear ring 200, the blade 1 comprising a blade body 11 and a blade trailing edge portion 12, the blade trailing edge portion 12 being arranged movable relative to the blade body 11, the edge of the blade trailing edge portion 12 being wave-shaped.
The motor 2 is arranged on the front ring 100, and the output end 21 is in driving connection with the blade tail edge 12 to drive the blade tail edge 12 to move relative to the blade body 11. Specifically, the motor 2 is disposed outside the front ring 100, and its output end 21 is connected to the trailing edge 12 of the blade 1 through the corresponding front ring 100, and preferably, the motor 2 employs a servo motor. The motor 2 may also be arranged in other positions.
The end of the blade body 11 has a first mounting portion 111, the first mounting portion 111 has a first mounting hole 1111, and the first mounting hole 1111 may be replaced by a first mounting groove; the blade trailing edge 12 is provided with a first mounting shaft 3; the output shaft of the motor 2 is fixed relative to one end of the first mounting shaft 3, and the other end of the first mounting shaft 3 is movably inserted into the first mounting hole 1111 of the first mounting portion 111 and circumferentially rotates around the axis thereof. The end of the blade body 11 has a second mounting portion 112 spaced from the first mounting portion 111, the second mounting portion 112 has a second mounting hole 1121, and the second mounting hole 1121 may be replaced with a second mounting groove and circumferentially rotated about its own axis. The trailing edge 12 of the blade 1 is provided with a second mounting shaft 4 spaced apart from the first mounting shaft 3, and one end of the second mounting shaft 4 is movably inserted into a second mounting hole 1121 of the second mounting portion 112.
The utility model also provides a centrifugal fan, which comprises the impeller of the centrifugal fan and a volute.
The utility model also provides a range hood, which comprises the impeller of the centrifugal fan.
The centrifugal fan of the present embodiment operates as follows.
The motor 2 works to drive the first mounting shaft 3 to rotate, the first mounting shaft 3 rotates to drive the blade tail edge 12 to rotate relative to the blade body 11, and the second mounting shaft 4 also rotates, so that the position of the tail edge 12 is changed to adapt to different fan working conditions.
Example 2:
referring to fig. 9-14, another preferred embodiment of the present utility model is shown. The difference from embodiment 1 is the connection structure between the blade body 11 and the blade trailing edge portion 12. The end of the blade tail edge 12 adjacent to the blade body 11 has a recess 121 which opens to the blade body 11 and into which the blade body 11 is inserted, the blade tail edge 12 being movable along the blade body 11 by the motor 2.
The impeller of the centrifugal fan of the embodiment further comprises a connecting rod 5 which is respectively fixed relative to the side wall of the tail edge part 12 and the output end 21 of the motor 2.
The blades 1 are more than two and are distributed at intervals, two adjacent blades 1 are respectively marked as a first blade and a second blade, the second blade is positioned at the front side of the first blade along the airflow flowing direction, and the bottom of the second blade is provided with an avoidance opening 113 for avoiding the connecting rod 5 connected with the blade tail edge part 12 of the first blade.
The centrifugal fan of the present embodiment operates as follows.
The motor 2 works to drive the connecting rod 5 to rotate, and the connecting rod 5 rotates to drive the blade tail edge 12 to move relative to the blade body 11, so that the position of the tail edge 12 is changed to adapt to different fan working conditions.
Claims (10)
1. An impeller of a centrifugal fan comprises
A front ring (100);
a rear ring (200) disposed opposite to the front ring (100);
a blade (1) provided between the front ring (100) and the rear ring (200) and including a blade body (11) and a blade trailing edge portion (12) located on the outlet side of the blade body (11);
the method is characterized in that:
the blade trailing edge (12) is arranged to be movable relative to the blade body (11) and further comprises a motor (2), the output end (21) of the motor (2) being in driving connection with the blade trailing edge (12).
2. The impeller of a centrifugal fan according to claim 1, wherein: the motor (2) is arranged outside the front ring (100) or the rear ring (200), and the output end (21) of the motor passes through the corresponding front ring (100) or the rear ring (200) and is connected with the blade tail edge part (12).
3. The impeller of a centrifugal fan according to claim 1, wherein: the end part of the blade body (11) is provided with a first mounting part (111), and the first mounting part (111) is provided with a first mounting groove or a first mounting hole (1111);
the blade tail edge part (12) is provided with a first mounting shaft (3);
the output shaft of the motor (2) is fixed relative to one end of the first installation shaft (3), and the other end of the first installation shaft (3) is movably inserted into a first installation groove or a first installation hole (1111) of the first installation part (111) and circumferentially rotates around the axis where the motor is located.
4. An impeller of a centrifugal fan according to claim 3, wherein: the end part of the blade body (11) is provided with second mounting parts (112) which are distributed at intervals with the first mounting parts (111), and the second mounting parts (112) are provided with second mounting grooves or second mounting holes (1121);
the blade tail edge part (12) is provided with second installation shafts (4) which are distributed at intervals with the first installation shafts (3), and one end of each second installation shaft (4) is movably inserted into a second installation groove or a second installation hole (1121) of each second installation part (112) and circumferentially rotates around the axis where the second installation shaft is located.
5. The impeller of a centrifugal fan according to claim 1, wherein: one end of the blade tail edge part (12) adjacent to the blade body (11) is provided with a concave part (121) which is opened towards the blade body (11) and is used for inserting the blade body (11), and the blade tail edge part (12) moves along the blade body (11) under the action of the motor (2).
6. The impeller of a centrifugal fan according to claim 5, wherein: and also comprises
The connecting rod (5) is respectively fixed with the side wall of the blade tail edge part (12) and the output end (21) of the motor (2) relatively.
7. The impeller of a centrifugal fan according to claim 6, wherein: the blades (1) are at least two and are distributed at intervals, the two adjacent blades (1) are respectively marked as a first blade and a second blade, the second blade is positioned at the front side of the first blade along the airflow flowing direction, and the bottom of the second blade is provided with an avoidance opening (113) for avoiding a connecting rod (5) connected with a blade tail edge part (12) of the first blade.
8. The impeller of a centrifugal fan according to any one of claims 1 to 7, wherein: the edge of the blade trailing edge part (12) is wavy.
9. A centrifugal fan, characterized in that: an impeller comprising a centrifugal fan according to any one of claims 1-8.
10. A range hood, characterized in that: an impeller comprising a centrifugal fan according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321005059.0U CN220551288U (en) | 2023-04-27 | 2023-04-27 | Impeller of centrifugal fan, centrifugal fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321005059.0U CN220551288U (en) | 2023-04-27 | 2023-04-27 | Impeller of centrifugal fan, centrifugal fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551288U true CN220551288U (en) | 2024-03-01 |
Family
ID=90009979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321005059.0U Active CN220551288U (en) | 2023-04-27 | 2023-04-27 | Impeller of centrifugal fan, centrifugal fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551288U (en) |
-
2023
- 2023-04-27 CN CN202321005059.0U patent/CN220551288U/en active Active
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