CN216867082U - Motor impeller and fan - Google Patents
Motor impeller and fan Download PDFInfo
- Publication number
- CN216867082U CN216867082U CN202220436172.3U CN202220436172U CN216867082U CN 216867082 U CN216867082 U CN 216867082U CN 202220436172 U CN202220436172 U CN 202220436172U CN 216867082 U CN216867082 U CN 216867082U
- Authority
- CN
- China
- Prior art keywords
- motor
- guide vane
- blade
- impeller
- blades
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of cigarette machines, and discloses a motor impeller and a fan, wherein the motor impeller comprises an impeller assembly, a stator assembly and an end cover, the impeller assembly comprises a plurality of blades, a plurality of first rotating guide vanes and a motor shell which are integrally formed by injection molding, the plurality of blades are uniformly distributed on the circumferential edge of the impeller assembly along the circumferential direction, the motor shell is symmetrically positioned in the middle of the impeller assembly, and the outer edge of the motor shell is connected with the blades; the stator assembly is coaxially arranged on the motor shell; the end cover comprises a second rotary guide vane and a motor cover which are integrally injection-molded, the motor cover is coaxially installed at the opening end of the motor shell, and the first rotary guide vane and the second rotary guide vane are identical in structure and are symmetrically located on two sides of the motor shell along the axial direction. The integrated structure is convenient to process, reduces the installation procedures of the impeller and the motor, and reduces the cost. The motor impeller reduces the angle of attack of the airflow at the inlet end of the blade, thereby reducing noise; and the vortex of the low-speed area at the position of the air outlet of the air duct close to the volute tongue is restrained, so that the noise of the whole machine is reduced, and the efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of cigarette machines, in particular to a motor impeller and a fan.
Background
Due to the effect of the rotating impeller and inlet guide vanes on the incoming airflow, the airflow has begun to gradually transition from axial flow to a helical propelling movement before entering the impeller, which is referred to as pre-swirl before the impeller blade inlet. The prerotation enables the inlet edge of the impeller blade to generate a circumferential component of absolute speed, the numerical value of the circumferential component cannot be calculated through a theoretical method at present and can only be calculated through test data, and therefore the inlet speed triangle changes.
The traditional centrifugal fan design method assumes that an impeller inlet is radial air inlet, and prerotation does not exist. In fact, impellers with multiple blades, when rotating at high speeds, are likely to have an effect on the incoming flow before entering the impeller. The factor of pre-rotation has been a less considered point in the industry design. The existing range hood impeller is generally made of sheet metal materials and is limited by the process, the impeller is single in form, and the pre-rotation design structure is few. The motor is generally an inner rotor motor, and the cantilever beam and the shaft of the motor are asymmetrically arranged, so that a targeted structure is difficult to be arranged in the middle of the impeller.
Therefore, an integral structure of an airfoil impeller motor is provided in the prior art, an injection molding process is mainly adopted, the inter-blade flow separation condition of the traditional single-thickness metal plate impeller is improved, the pre-rotation condition of an impeller inlet is not improved, and the noise is serious.
Therefore, it is desirable to design a motor impeller and a blower having the same to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Based on the above problems, an object of the present invention is to provide a motor impeller, which is easy to process and assemble, and can effectively improve the pre-rotation condition of the impeller inlet and reduce the noise.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a motor impeller comprising:
the impeller assembly comprises a plurality of blades, a plurality of first rotating guide vanes and a motor shell which are integrally injection-molded, the plurality of blades are uniformly distributed on the circumferential edge of the impeller assembly along the circumferential direction, the motor shell is symmetrically positioned in the middle of the impeller assembly, and the outer edge of the motor shell is connected with the blades;
a stator assembly coaxially mounted to the motor housing;
the end cover, the end cover includes integrative injection moulding's second rotary guide vane and motor cover, motor cover coaxial arrangement in the open end of motor casing, first rotary guide vane with second rotary guide vane structure is the same and lie in along axial symmetry the both sides of motor casing.
As an optimal technical scheme of the above motor impeller, the cross-sectional length of the first rotary guide vane gradually shortens from the center to the end surface, an inlet section edge line of the first rotary guide vane and an axis of the impeller assembly form a preset included angle, and an outlet section edge line of the first rotary guide vane is parallel to the axis of the impeller assembly.
As the preferable technical scheme of the motor impeller, the preset included angle is 5-20 degrees.
As a preferred technical scheme of the above motor impeller, the blades are forward blades, and the first rotary guide vane and the second rotary guide vane are backward blades.
As a preferred technical scheme of the motor impeller, a value range of a guide vane outlet angle of the first rotary guide vane is 20 degrees to 150 degrees, and a value range of a guide vane inlet angle of the first rotary guide vane is 20 degrees to 70 degrees.
As a preferable technical solution of the above motor impeller, a ratio of a height of the first rotary guide vane to a height of the blade is 0.2 to 1.
As a preferable embodiment of the motor impeller, a wheel diameter ratio of the first rotary guide vane is 0.3 to 0.8, and a wheel diameter ratio of the blade is 0.3 to 0.75.
As a preferable technical solution of the above motor impeller, the blade, the first rotary guide vane, and the second rotary guide vane are all arc-shaped blades.
As a preferred technical solution of the above motor impeller, the first rotary guide vane extends radially outward to connect with the corresponding blade to form a long blade, the blade not connected with the first rotary guide vane is a short blade, the short blade is a forward blade, and the long blade and the short blade are uniformly distributed in a penetrating manner along a circumferential direction;
the long blade comprises a forward section and a backward section, the forward section is the same as the shape and size of the short blade, and the backward section is connected with the forward section in a tangent mode.
In a preferred embodiment of the motor impeller, the ratio of the short blades to the long blades is 0.75 to 0.95, and the ratio of the short blades to the long blades is 0.2 to 0.7.
As a preferable technical solution of the above motor impeller, an outer end face of the backward section of the long blade is provided with a chamfer.
As a preferable embodiment of the motor impeller, a ratio of the number of the long blades to the number of the short blades is 0.1 to 0.5.
Another object of the present invention is to provide a fan which is low in cost and low in noise.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a fan comprises the motor impeller according to any one of the above technical schemes.
Compared with the prior art, the utility model has the beneficial effects that:
the motor impeller provided by the utility model comprises an impeller assembly, a stator assembly and an end cover which are coaxially installed, wherein the impeller assembly comprises a plurality of blades, a plurality of first rotating guide vanes and a motor shell which are integrally formed by injection molding, the integrally formed structure of the impeller assembly is convenient to process, the installation procedures of the impeller and the motor are greatly reduced, the cost is reduced, the accumulated installation error is obviously reduced, and the precision of the motor impeller is higher. The motor shell is symmetrically arranged in the middle of the impeller assembly, and the first rotating guide vane and the second rotating guide vane can be symmetrically arranged on two sides of the motor shell, so that on one hand, the axial entering airflow can be guided and accelerated, the prerotation of the front end of the motor impeller is corrected, and the airflow attack angle of the inlet end of the blade is reduced, thereby reducing noise; on the other hand, under the acceleration action of the rotating guide vane, the radial air flow speed can be improved, and the low-speed zone vortex at the position of the air outlet of the air duct close to the volute tongue is inhibited, so that the noise of the whole machine is reduced, and the efficiency is improved; the symmetrical structure makes the left and right air inlet uniform, and further optimizes the noise.
The fan provided by the utility model comprises the motor impeller, and is low in manufacturing cost and low in noise.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is an exploded schematic view of a motor impeller according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a motor impeller provided in accordance with an embodiment of the present invention;
FIG. 3 is a side view of a motor impeller provided in accordance with an embodiment of the present invention;
FIG. 4 is an isometric view of a motor impeller provided in accordance with an embodiment of the present invention;
fig. 5 and fig. 6 are respectively a schematic dimension marking diagram of a motor impeller provided in an embodiment of the present invention;
FIG. 7 is a side view of a motor impeller provided in accordance with a second embodiment of the present invention;
FIG. 8 is an isometric view of a motor impeller provided in accordance with example two of the present invention;
fig. 9 and fig. 10 are schematic diagrams of airflow flow partitions of a motor impeller according to a second embodiment of the present invention.
In the figure:
1-an impeller assembly; 11-a blade; 12-a first rotating vane; 13-motor housing; 111-short leaf; 121-forward segment; 122-backward section;
2-a stator assembly; 21-a motor stator; 22-motor shaft;
3-end cover; 31-a second rotary vane; 32-motor cover.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Example one
As shown in fig. 1, the present embodiment provides a motor impeller, which includes an impeller assembly 1, a stator assembly 2 and an end cover 3, which are coaxially installed. Wherein, impeller subassembly 1 is rotary part, and an organic whole is moulded plastics and is formed, as shown in fig. 1 to 4, it includes a plurality of blades 11, a plurality of first rotary guide 12 and motor casing 13, and a plurality of blades 11 are along circumferencial direction evenly distributed in impeller subassembly 1's circumference edge, and motor casing 13 symmetry is located impeller subassembly 1's middle part, and the motor adopts thin motor, and motor casing 13 is disk and thickness thin, and motor casing 13's outer edge is connected rather than outside evenly distributed's blade 11. The blades 11 are perpendicular to the motor casing 13 in principle, so that integral demolding is facilitated, and certain angles can exist between the blades and the motor casing 13 according to actual conditions.
The end cover 3 comprises a second rotary guide vane 31 and a motor cover 32 which are integrally injection-molded, the motor cover 32 is coaxially installed at the opening end of the motor casing 13, and the first rotary guide vane 12 and the second rotary guide vane 31 are identical in structure and are symmetrically located on two sides of the motor casing 13 along the axial direction.
The integrated into one piece structure of impeller subassembly 1 in this embodiment is convenient for process, and the installation procedure of the impeller that has significantly reduced and motor has reduced the cost, and is showing and has reduced the accumulative error of installation, makes motor impeller precision higher. By adopting a middle-mounted outer rotor motor, the motor and the impeller are designed symmetrically, and the first rotating guide vane 12 and the second rotating guide vane 31 can be symmetrically arranged on two sides of the motor shell 13, so that on one hand, the axial entering airflow can be guided and accelerated, the prerotation of the front end of the motor impeller can be corrected, and the airflow attack angle of the inlet end of the blade 11 can be reduced, thereby reducing the noise; on the other hand, under the acceleration action of the rotary guide vane, the radial air flow speed can be improved, and the vortex of a low-speed area at the position of the outlet air of the air duct close to the volute tongue is inhibited, so that the noise of the whole machine is reduced, and the efficiency is improved; the symmetrical structure makes the left and right air inlet uniform, and further optimizes the noise.
Since the first rotary vane 12 and the second rotary vane 31 have the same structure, the structure of the first rotary vane 12 will be described as an example in the present embodiment.
In this embodiment, the sectional length of the first rotary guide vane 12 gradually shortens from the center, that is, the motor casing 13, to the end face direction, and the edge line of the inlet section of the first rotary guide vane 12 and the axis of the impeller assembly 1 form a preset included angle, and the edge line of the outlet section of the first rotary guide vane 12 is parallel to the axis of the impeller assembly 1. This structure setting can increase the import length of first rotary guide vane 12, when guaranteeing the biggest acting capacity of first rotary guide vane 12, guarantees the air inlet area of first rotary guide vane 12 to guarantee whole air performance efficiency. Optionally, the preset included angle is 5 ° to 20 °, for example, may be 5 °, 10 °, 15 °, 20 °, and the like, and the angle range may further increase the air inlet area of the first rotary guide vane 12, so as to ensure the air inlet amount.
Further, the blade 11 is a forward blade, and both the first rotary vane 12 and the second rotary vane 31 are backward blades. In this embodiment, the first rotary guide vane 12 and the second rotary guide vane 31 are closer to the center of the impeller assembly 1 than the blades 11, the airflow enters the impeller from the center in the axial direction, and after the airflow is guided and distributed by the rotary guide vanes, the airflow is changed from the axial direction to the radial direction and then flows out of the impeller through the blades 11.
Further, the exit angle of the first turning vane 12 is preferably such that the absolute velocity of the airflow exit is aligned with the absolute velocity of the impeller inlet. Therefore, the first rotary guide vane 12 can be designed as a single arc or a multi-segment arc according to actual conditions. As shown in fig. 5, in the present embodiment, the guide vane outlet angle β 4A of the first rotary guide vane 12 ranges from 20 ° to 150 °, and the guide vane inlet angle β 3A of the first rotary guide vane 12 ranges from 20 ° to 70 °. Optionally, the first rotary vane 12 has a vane outlet angle of 20 °, 40 °, 60 °, 90 °, 110 °, 130 °, 150 °, etc., and a vane inlet angle of 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, etc.
Optionally, as shown in FIG. 6, the ratio of the height h2 of the first turning vane 12 to the height h1 of the blade 11 is 0.2-1. Further optionally, the wheel diameter ratio D4/D3 of the first turning vane 12 is 0.3-0.8, and the wheel diameter ratio D1/D2 of the blade 11 is 0.3-0.75.
The blade 11, the first rotary vane 12, and the second rotary vane 31 in the present embodiment are all arc-shaped blades. So set up, blade 11, first rotary vane 12 and 31 water conservancy diversion faces of second rotary vane are the arcwall face, can wind-guiding more smoothly. Of course, the blade 11, the first rotary vane 12 and the second rotary vane 31 may also be of other shapes, such as a straight plate-like structure.
Alternatively, the first rotary guide vane 12 and the second rotary guide vane 31 may have a single thickness or may have a variable thickness, which is designed according to actual conditions.
The embodiment also provides a fan, which comprises the motor impeller. The fan has the advantages of few assembling procedures, low manufacturing cost, lower noise in the operation process and smaller air volume loss. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the motor impeller, and therefore, the description is omitted here.
Example two
The present embodiment provides a motor impeller, which has substantially the same structure as the motor impeller in the first embodiment, except that:
as shown in fig. 7 and 8, all the blades 11 in the present embodiment include two types of long blades and short blades 111, specifically, the first rotating vane 12 extends radially outward to connect with the corresponding blade 11 to form a long blade, the blade 11 not connected with the first rotating vane 12 is a short blade 111, the short blade 111 is a forward blade, and the long blade and the short blade 111 are uniformly distributed in a penetrating manner in the circumferential direction, that is, one long blade is disposed at every fixed number of short blades 111, and the gap between every two adjacent blades 11 (including the long blade and the short blade 111) is equal; the long blade comprises a forward section 121 and a backward section 122, wherein the forward section 121 is a forward blade, the backward section 122 is a backward blade, the shape and the size of the forward section 121 are the same as those of the short blade 111, and the backward section 122 is tangentially connected with the forward section 121.
Optionally, the connection location of the backward section 122 and the forward section 121 is smoothly transited. So set up, backward section 122 passes through the circular arc transition with preceding section 121, and the wind-guiding in-process, the wind current also can be smoothly by backward section 122 water conservancy diversion to preceding section 121, and the windage is less, and the amount of wind loss is little.
Further alternatively, the wheel diameter ratio D1/D2 of the short blade 111 is 0.75-0.95, and the wheel diameter ratio D3/D2 of the long blade is 0.2-0.7, which can further reduce wind dryness and air volume loss.
Preferably, the outer end faces of the rearward sections 122 of the long blades are provided with cut corners. Through the arrangement, the inlet of the impeller is enlarged, the air inlet amount is increased, the air flow is guided to the left and the right, and the air flow is uniformly distributed.
In the embodiment, the ratio of the number of the long blades to the number of the short blades 111 is 0.1-0.5, for example, 0.1, 0.3, 0.5, etc., and the design is performed according to the air intake and other factors.
In the embodiment, three flow areas are formed in the impeller by the design of the long and short blades 111, as shown in fig. 9 and 10, when the impeller works, the airflow mainly enters the impeller from the inlet area a, and the airflow is vertically upward from the lower part of the range hood and turns to be axial. The area B is an accelerated distribution area, and through the guiding and distribution of the rotating guide vanes, namely the backward sections 122 of the long blades, the airflow is converted from the axial direction to the radial direction, so that the radial distribution of the airflow among the short blades 111 is more uniform, the attack angle of the airflow at the inlet of the short blades 111 is reduced, the loss is reduced, and the efficiency is improved; and the airflow is accelerated, which is beneficial to eliminating the low-speed area at the position of the volute tongue. The C area is a centrifugal acceleration area, and the airflow is further accelerated in the reduction flow passage by the acting of the blades 11 and is thrown out of the impeller. Preferably, the blades 11, i.e. the short blades 111 and the forward sections 121 of the long blades, are strong forward bending blades 11, so that the fan has a larger flow rate and can also lift the pressure.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. An electric motor impeller, comprising:
the impeller assembly (1) comprises a plurality of integrally injection-molded blades (11), a plurality of first rotating guide vanes (12) and a motor casing (13), wherein the plurality of blades (11) are uniformly distributed on the circumferential edge of the impeller assembly (1) along the circumferential direction, the motor casing (13) is symmetrically positioned in the middle of the impeller assembly (1), and the outer edge of the motor casing (13) is connected with the blades (11);
a stator assembly (2), the stator assembly (2) being coaxially mounted to the motor casing (13);
end cover (3), end cover (3) are including integrative injection moulding's second rotary guide vane (31) and motor cover (32), motor cover (32) coaxial arrangement in the open end of motor casing (13), first rotary guide vane (12) with second rotary guide vane (31) the same and along axial symmetry position in the both sides of motor casing (13).
2. Motor impeller according to claim 1,
the cross-sectional length of first rotary guide vane (12) shortens to the terminal surface direction from the center gradually, the inducer crest line of first rotary guide vane (12) with the axis of impeller subassembly (1) is preset contained angle, the export section crest line of first rotary guide vane (12) with the axis of impeller subassembly (1) is parallel.
3. Motor impeller according to claim 2,
the preset included angle is 5-20 degrees.
4. Motor impeller according to claim 1,
the blade (11) is forward blade, first rotating guide vane (12) with second rotating guide vane (31) are backward blade.
5. Motor impeller according to claim 4,
the range of the guide vane outlet angle of the first rotating guide vane (12) is 20-150 degrees, and the range of the guide vane inlet angle of the first rotating guide vane (12) is 20-70 degrees.
6. Motor impeller according to claim 1,
the ratio of the height of the first rotary guide vane (12) to the height of the blade (11) is 0.2-1.
7. Motor impeller according to claim 1,
the wheel diameter ratio of the first rotating guide vane (12) is 0.3-0.8, and the wheel diameter ratio of the blade (11) is 0.3-0.75.
8. Motor impeller according to any one of claims 1-7,
the blade (11), the first rotary guide vane (12) and the second rotary guide vane (31) are all arc-shaped blades.
9. Motor impeller according to claim 1,
the first rotating guide vane (12) extends outwards along the radial direction and is connected with the corresponding blade (11) to form a long blade, the blade (11) which is not connected with the first rotating guide vane (12) is a short blade (111), the short blade (111) is a forward blade, and the long blade and the short blade (111) are uniformly distributed in a penetrating manner along the circumferential direction;
the long blade comprises a forward section (121) and a backward section (122), the forward section (121) and the short blade (111) have the same shape and size, and the backward section (122) is tangentially connected with the forward section (121).
10. Motor impeller according to claim 9,
the wheel diameter ratio of the short blades (111) is 0.75-0.95, and the wheel diameter ratio of the long blades is 0.2-0.7.
11. Motor impeller according to claim 9,
the outer end face of the backward section (122) of the long blade is provided with a chamfer.
12. Motor impeller according to claim 9,
the ratio of the number of the long blades to the number of the short blades (111) is 0.1-0.5.
13. A fan comprising a motor impeller according to any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220436172.3U CN216867082U (en) | 2022-03-02 | 2022-03-02 | Motor impeller and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220436172.3U CN216867082U (en) | 2022-03-02 | 2022-03-02 | Motor impeller and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867082U true CN216867082U (en) | 2022-07-01 |
Family
ID=82161669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220436172.3U Active CN216867082U (en) | 2022-03-02 | 2022-03-02 | Motor impeller and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867082U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
-
2022
- 2022-03-02 CN CN202220436172.3U patent/CN216867082U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203655703U (en) | Centrifugal fan | |
| CN216867082U (en) | Motor impeller and fan | |
| CN113309736A (en) | Blade, impeller, centrifugal fan, range hood and blade design method | |
| CN217682449U (en) | Moving impeller, fan assembly with moving impeller and dust collector | |
| CN217462649U (en) | Impeller capable of reducing secondary flow on surface of moving blade, fan assembly and dust collector | |
| CN210290259U (en) | Impeller, fan and motor | |
| CN111927823A (en) | Centrifugal impeller and high-specific-speed energy-saving centrifugal dust removal fan | |
| CN216447178U (en) | Backward centrifugal fan | |
| CN215762421U (en) | Centrifugal fan blade, fan and air conditioning system comprising same | |
| CN107339265B (en) | Fan | |
| CN116733772A (en) | Motor impeller and fan | |
| CN215171030U (en) | High-load three-dimensional flow movable impeller and motor thereof | |
| CN114370428A (en) | Fan blade and centrifugal fan | |
| CN114718904A (en) | Pneumatic structure, compressor, dust catcher | |
| CN210686439U (en) | Diffuser with vanes | |
| CN213331674U (en) | Centrifugal three-dimensional flow impeller and dust collector motor | |
| CN113550930A (en) | Centrifugal fan blade, fan and air conditioning system comprising same | |
| CN114352574A (en) | Centrifugal fan with prevent vortex piece | |
| CN216430051U (en) | Fan assembly and air conditioner outdoor unit | |
| CN216767853U (en) | Fan blade and centrifugal fan | |
| CN112855609A (en) | Fan and motor | |
| CN219774424U (en) | High static pressure centrifugal fan blade | |
| CN220726654U (en) | Impeller of cooling fan | |
| CN117272538B (en) | Machining method of guide vane of compressor, guide mechanism and centrifugal compressor | |
| CN219413024U (en) | Centrifugal fan and range hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |