CN210440276U - Impeller assembly for centrifugal fan, air conditioner and air purifier - Google Patents
Impeller assembly for centrifugal fan, air conditioner and air purifier Download PDFInfo
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- CN210440276U CN210440276U CN201921159900.5U CN201921159900U CN210440276U CN 210440276 U CN210440276 U CN 210440276U CN 201921159900 U CN201921159900 U CN 201921159900U CN 210440276 U CN210440276 U CN 210440276U
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- 238000009434 installation Methods 0.000 description 2
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Abstract
The utility model discloses an impeller subassembly, centrifugal fan, air conditioner and air purifier for centrifugal fan relates to and is used for centrifugal part, part and annex field. The impeller assembly for the centrifugal fan comprises an impeller and a first current collector, wherein the impeller is provided with an air inlet, and the first current collector is positioned at the air inlet; the impeller is provided with an annular plate body which surrounds the air inlet in a circle, and the annular plate body protrudes from the impeller to the first current collector; the first current collector is a horn-shaped ring body, the large ring end of the first current collector is positioned at one end of the first current collector, which is far away from the impeller, along the axial direction of the ring body of the first current collector, and the small ring end of the first current collector is sleeved on the periphery of the annular plate body; the first current collector is not in contact with the annular plate body. The air flow which flows back from the gap between the first current collector and the impeller is blown to one side of the first current collector, so that the influence of the back-flowing air flow on the air flow of the impeller air inlet is favorably reduced, and the stability of the air flow in the impeller air inlet and the impeller is favorably realized.
Description
Technical Field
The utility model relates to a be used for centrifugal part, part and annex field, specifically be relate to an impeller subassembly, centrifugal fan, air conditioner and air purifier for centrifugal fan.
Background
When an impeller of a centrifugal machine operates, the impeller integrally rotates, the impeller rotates to suck airflow from an air inlet under the drive of blades of the impeller, then the airflow is discharged from an air outlet, and for the stable operation of the impeller and the stability of the airflow inside the impeller, a horn-shaped current collector is generally arranged at the air inlet of the impeller, so that the load of the rotation of the impeller is reduced, the current collector and the impeller are generally arranged respectively in the prior art, and the impeller and the current collector are not in contact with each other; the impeller and the current collector form an impeller assembly, when the impeller assembly runs, the impeller rotates, the current collector is fixed, and under the action of the impeller, airflow blown out of an air outlet of the impeller easily flows back to an air inlet of the impeller from the outside of the impeller through a gap between the current collector and the impeller.
In the existing impeller assembly, the matching mode of the current collector and the impeller mainly comprises an opposite opening type and a current collector inner sleeve type, under the opposite opening type matching of the current collector and the impeller, the airflow flowing back from a gap between the impeller and the current collector is perpendicular to the airflow flowing from a current collector leading-in air inlet, and the airflow flowing back from the gap between the impeller and the current collector is mixed with the airflow leading-in air inlet from the current collector, so that the airflow flowing from the air inlet is disordered, and the airflow flowing into the impeller from the air inlet is disordered.
Under the matching of the inner sleeve type of the current collector, airflow reflowing from a gap between the impeller and the current collector is directly blown into the impeller from the air inlet, the flow rate of the airflow reflowing from the gap between the impeller and the current collector is obviously larger than that of the airflow guided into the air inlet from the current collector, and the airflow in the impeller is easy to be disturbed.
The turbulent air flow easily impacts the blades inside the impeller, and the running noise of the impeller is increased.
Disclosure of Invention
One of the objects of the present invention is to provide an impeller assembly which is advantageous for the stabilization of the air flow flowing into the impeller.
In order to achieve the above object, the present invention provides an impeller assembly for a centrifugal fan, including an impeller having an air inlet, and a first current collector located at the air inlet; the impeller is provided with an annular plate body which surrounds the air inlet in a circle, and the annular plate body protrudes from the impeller to the first current collector; the first current collector is a horn-shaped ring body, the large ring end of the first current collector is positioned at one end of the first current collector, which is far away from the impeller, along the axial direction of the ring body of the first current collector, and the small ring end of the first current collector is sleeved on the periphery of the annular plate body; the first current collector is not in contact with the annular plate body.
From top to bottom, the utility model discloses a structural design to impeller subassembly, the ringlet pot head of first collector is in the periphery of cyclic annular plate body, first collector is first collector overcoat formula with the cooperation of impeller like this, the air current of clearance backward flow blows to first collector one side from between first collector and the impeller like this, be favorable to reducing the influence of the air current of clearance backward flow between impeller and the first collector to the impeller air intake, be favorable to impeller air intake air current stable, be favorable to the inside air current of impeller to be stable.
Preferably, the annular plate body is provided with a flared annular plate, the small annular end of the first current collector is sleeved on the flared annular plate, and the large annular end of the flared annular plate is located on one side, close to the first current collector, of the small annular end of the flared annular plate along the axial direction of the annular body of the first current collector.
Therefore, under the guidance of the outer wall of the horn-shaped annular plate, the airflow flowing back from the gap between the impeller and the first current collector is blown to the inner wall of the first current collector and flows along the inner wall of the first current collector, so that the influence of the backflow airflow on the airflow at the impeller air inlet is further reduced, the airflow at the impeller air inlet is further stabilized, and the airflow inside the impeller is stabilized.
In another preferred embodiment, the large ring end of the flared ring plate is the end of the ring plate body near the first current collector.
Therefore, the horn-shaped ring plate is more favorable for guiding the airflow of the air inlet to stably flow into the impeller, the structure of the ring-shaped plate body is simple, and the structure of the impeller assembly is simple.
In a further scheme, the inner diameter of the small ring end of the first collector plate is smaller than the outer diameter of the large ring end of the trumpet-shaped ring plate.
Therefore, the gap between the first current collector and the annular plate body is favorably reduced, the airflow flow returning from the gap between the impeller and the first current collector is favorably reduced, the influence of the returning airflow on the airflow at the impeller air inlet is further favorably reduced, the airflow at the impeller air inlet is further favorably stabilized, and the airflow inside the impeller is favorably stabilized.
In a further aspect, the first current collector is formed by splicing at least two ring segments.
Therefore, the first current collector can be smoothly sleeved on the annular plate body.
Still another preferred scheme is that the impeller assembly further comprises a second current collector, the second current collector is a horn-shaped ring body, the first current collector is sleeved on the second current collector, the large ring end of the second current collector is located at one end, far away from the impeller, of the second current collector, the small ring end of the second current collector extends into the air inlet, a gap is reserved between the first current collector and the second current collector, and gaps are reserved between circumferential parts of the second current collector and the ring-shaped plate body.
Therefore, the airflow reflowing from the gap between the impeller and the first current collector is blown out from the gap between the first current collector and the second current collector to the direction far away from the impeller, so that the influence of the reflowing gas on the airflow at the air inlet is thoroughly avoided, the airflow at the air inlet of the impeller is stable, and the airflow inside the impeller is stable.
The further scheme is that at least three limiting blocks are arranged between the first collector and the second collector, and the limiting blocks are distributed at intervals along the circumferential direction of the ring body of the first collector.
Therefore, the first current collector and the second current collector can be limited and positioned through the limiting blocks, the first current collector and the second current collector are favorably installed and aligned, and the assembly difficulty of the impeller assembly is favorably reduced.
The second objective of the present invention is to provide a centrifugal fan which is favorable for the stable air flow flowing into the impeller.
In order to achieve the above object, the present invention provides a centrifugal fan comprising the aforementioned impeller assembly for a centrifugal fan.
Therefore, by adopting the impeller assembly, the influence of the airflow flowing back from the gap between the impeller and the first current collector on the airflow at the impeller air inlet is reduced, the airflow at the impeller air inlet is stabilized, and the airflow in the impeller is stabilized.
The third objective of the present invention is to provide an air conditioner that is favorable for the impeller to flow in stably.
In order to achieve the above object, the present invention provides an air conditioner including the centrifugal fan.
Therefore, the centrifugal fan is beneficial to reducing the influence of airflow flowing back from the gap between the impeller and the first current collector on the airflow at the impeller air inlet, and is beneficial to stabilizing the airflow at the impeller air inlet and stabilizing the airflow inside the impeller.
The fourth purpose of the utility model is to provide an air purifier that is favorable to the impeller to flow in the air current stably.
In order to achieve the above object, the present invention provides an air purifier including the centrifugal fan.
Therefore, the centrifugal fan is beneficial to reducing the influence of airflow flowing back from the gap between the impeller and the first current collector on the airflow at the impeller air inlet, and is beneficial to stabilizing the airflow at the impeller air inlet and stabilizing the airflow inside the impeller.
Drawings
Fig. 1 is a cross-sectional view of a first embodiment of an impeller assembly of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a cross-sectional view of a second embodiment of an impeller assembly of the present invention;
fig. 4 is a partially enlarged view at B in fig. 2.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Impeller subassembly, centrifugal fan, air conditioner and air purifier embodiment one:
referring to fig. 1 and 2, the impeller assembly for the centrifugal fan of the present embodiment includes an impeller 1 and a first current collector 2, the impeller 1 has an air inlet 111, and the first current collector 2 is located at the air inlet 111; the impeller 1 is provided with a front cover plate 11, a rear cover plate 13 and blades 12, the blades 12 are connected between the front cover plate 11 and the rear cover plate 13, an air inlet 111 of the impeller 1 is arranged on the front cover plate 11, the front cover plate 11 is an annular plate body surrounding the air inlet 111 for a circle, the front cover plate 11 protrudes from the impeller 1 to the first current collector 2, one end of the front cover plate 11 close to the first current collector 2 is horn-shaped, the axis of the horn-shaped ring plate (hereinafter referred to as horn-shaped ring plate 112) of the front cover plate 11 coincides with the axis of the ring body of the first current collector 2, the horn-shaped ring plate 112 is provided with a large ring end and a small ring end which are distributed along the axis direction C of the ring body of the first current collector 2, and the large ring end of the horn-shaped ring plate 112 is the tail end of.
Of course, the front cover plate 11 may also be an annular plate, but an annular plate surrounding the air inlet 111 is additionally disposed on the front cover plate 11, and the first current collector 2 is sleeved on the outer periphery of the annular plate.
Referring to fig. 1 and fig. 2, the first current collector 2 is a horn-shaped ring, the first current collector 2 has a large ring end and a small ring end distributed along an axial direction C of the ring of the first current collector 2, the large ring end of the first current collector 2 is located at an end of the first current collector 2 away from the impeller 1 along the axial direction C of the ring of the first current collector 2, and the small ring end of the first current collector 2 is sleeved on an outer periphery of the horn-shaped ring plate 112 of the front cover plate 11; the first current collector 2 is not in contact with the front cover plate 11, and gaps are left between the circumferential parts of the first current collector 2 and the front cover plate 11.
Preferably, the inner diameter of the small ring end of the first collector 2 is smaller than the outer diameter of the large ring end of the flared ring plate 112, the first collector 2 comprises two ring segments 21 with a central angle of 180 °, and the two ring segments 21 are spliced to form the whole ring of the first collector 2.
Alternatively, the two ring segments 21 are fixedly connected by means of a snap connection, a bolt connection or the like. Specifically, both ends of the ring segment 21 in the circumferential direction are provided with connecting lugs 211, and the two ring segments 21 are fixedly connected through the connecting lugs 211.
The small ring end of the first current collector 2 is sleeved on the periphery of the horn-shaped ring plate 112, so that the first current collector 2 is in a sleeved mode with the impeller 1, and the airflow flowing back from the gap between the first current collector 2 and the impeller 1 is blown to one side of the first current collector 2, thereby being beneficial to reducing the influence of the airflow flowing back from the gap between the impeller 1 and the first current collector 2 on the airflow of the air inlet 111 of the impeller 1, being beneficial to stabilizing the airflow of the air inlet 111 of the impeller 1 and being beneficial to stabilizing the airflow inside the impeller 1.
And under the guide of the outer wall of the horn-shaped annular plate 112, the airflow flowing back from the gap between the impeller 1 and the first current collector 2 is blown onto the inner wall of the first current collector 2 and flows along the inner wall of the first current collector 2, which is further favorable for reducing the influence of the backflow airflow on the airflow of the air inlet 111 of the impeller 1, further favorable for stabilizing the airflow of the air inlet 111 of the impeller 1, and favorable for stabilizing the airflow inside the impeller 1.
Certainly, the flared ring plate 112 also serves as a small current collector, and the flared ring plate 112 can guide the airflow from the air inlet 111 to stably enter the impeller 1, so as to further facilitate the airflow stabilization of the air inlet 111 and the airflow stabilization inside the impeller 1.
The inner diameter of the small ring end of the first current collector 2 is smaller than the outer diameter of the large ring end of the horn-shaped ring plate 112, which is beneficial to reducing the gap between the first current collector 2 and the front cover plate 11, reducing the airflow flow rate flowing back from the gap between the impeller 1 and the first current collector 2, further reducing the influence of the backflow airflow on the airflow at the air inlet 111 of the impeller 1, further facilitating the airflow stability at the air inlet 111 of the impeller 1, and facilitating the airflow stability in the impeller 1.
Since the inner diameter of the small ring end of the first current collector 2 is smaller than the outer diameter of the large ring end of the flared ring plate 112 of the front cover plate 11, the small ring end of the first current collector 2 of the whole ring cannot be smoothly sleeved on the flared ring plate 112, alternatively, the small ring end of the first current collector 2 can be enlarged by forming a gap at the small ring end of the first current collector 2 and adopting a pressing installation manner to complete the installation and matching of the first current collector 2 and the front cover plate 11, and the gap is then filled after the first current collector 2 and the front cover plate 11 are installed in a matching manner, which is inconvenient in the installation process, preferably, the first current collector 2 is formed by splicing two ring segments 21, so that the two ring segments 21 can be sleeved on the flared ring plate 112 along the radial direction, which is favorable for the first current collector 2 to be smoothly sleeved on the flared ring plate 112. Of course, the first current collector 2 may also be formed by splicing more than two ring segments 21, and the purpose of sleeving the first current collector 2 on the trumpet-shaped ring plate 112 can also be achieved.
Impeller subassembly, centrifugal fan, air conditioner and air purifier embodiment two:
in this embodiment, the impeller assembly further includes a second current collector 3, the second current collector 3 is a horn-shaped ring, a ring axis of the second current collector 3 coincides with a ring axis of the first current collector, the second current collector 3 also has a large ring end and a small ring end distributed along a ring axis direction C of the first current collector 2, the first current collector 2 is sleeved on the second current collector 3, along the direction C, the large ring end of the second current collector 3 is located at an end away from the impeller, the small ring end of the second current collector 3 extends into the air inlet 111, gaps are left between the first current collector 2 and the second current collector 3 in the circumferential direction, and gaps are left between the second current collector 3 in the circumferential direction and the front cover plate 11. Therefore, the airflow reflowing from the gap between the impeller 1 and the first current collector 2 is blown out to the direction far away from the impeller 1 through the gap between the first current collector 2 and the second current collector 3, which is favorable for thoroughly avoiding the influence of the reflowing gas on the airflow at the air inlet 111, is favorable for stabilizing the airflow at the air inlet 111 of the impeller 1, and is favorable for stabilizing the airflow inside the impeller 1.
In addition, in the present embodiment, it is not necessary to consider how the return air flow is guided to flow along the inner wall of the first collector 2, and therefore, it is not necessary to make the end of the front cover plate 11 close to the first collector 2 in a trumpet shape, or to make the inner diameter of the small ring end of the first collector 2 smaller than the outer diameter of the trumpet-shaped ring plate 112 close to the end of the first collector 2, and therefore, it is possible to make the first collector 2 a trumpet-shaped full-ring plate, and preferably, both the first collector 2 and the second collector 3 are full-ring collectors.
Preferably, three limit blocks (not shown in the figure) protrude from the inner wall of the first current collector 2 to the second current collector 3, the limit blocks are circumferentially distributed at intervals along the ring body of the first current collector 2, and the outer wall of the second current collector 3 is in contact with the three limit blocks, so that the first current collector 2 and the second current collector 3 can be conveniently positioned, the assembly difficulty of the first current collector 2 and the second current collector 3 can be conveniently reduced, and the assembly difficulty of the impeller assembly can be reduced. Alternatively, the limiting block may also protrude from the outer wall of the second collector plate 3 towards the first collector plate 2, which also achieves the object of the invention.
The other parts of the impeller assembly, the centrifugal fan, the air conditioner and the air purifier in the second embodiment are the same as those of the impeller assembly, the centrifugal fan, the air conditioner and the air purifier in the first embodiment.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. The impeller assembly for the centrifugal fan comprises an impeller and a first current collector, wherein the impeller is provided with an air inlet, and the first current collector is positioned at the air inlet;
the method is characterized in that:
the impeller is provided with an annular plate body which surrounds the air inlet in a circle, and the annular plate body protrudes from the impeller to the first current collector;
the first current collector is a horn-shaped ring body, the large ring end of the first current collector is positioned at one end, far away from the impeller, of the first current collector along the axial direction of the ring body of the first current collector, and the small ring end of the first current collector is sleeved on the periphery of the annular plate body;
the first collector plate is not in contact with the annular plate body.
2. The impeller assembly of claim 1, wherein:
the annular plate body is provided with a horn-shaped annular plate, and the small annular end of the first current collector is sleeved on the horn-shaped annular plate;
along the axis direction of the ring body of the first current collector, the large ring end of the horn-shaped ring plate is positioned on one side, close to the first current collector, of the small ring end of the horn-shaped ring plate.
3. The impeller assembly of claim 2, wherein:
the large ring end of the horn-shaped ring plate is the tail end of the ring-shaped plate body close to one end of the first current collector.
4. An impeller assembly according to claim 2 or 3, wherein:
the inner diameter of the small ring end of the first collector is smaller than the outer diameter of the large ring end of the trumpet-shaped ring plate.
5. The impeller assembly of claim 4, wherein:
the first current collector is formed by splicing at least two ring segments.
6. An impeller assembly according to any one of claims 1 to 3, wherein:
the impeller assembly further comprises a second current collector, the second current collector is a horn-shaped ring body, the first current collector is sleeved on the second current collector, the large ring end of the second current collector is located at the end, far away from the impeller, of the second current collector, the small ring end of the second current collector extends into the air inlet, gaps are reserved between the first current collector and the second current collector, and gaps are reserved between the circumferential positions of the second current collector and the ring-shaped plate body.
7. The impeller assembly of claim 6, wherein:
at least three limiting blocks are arranged between the first collector and the second collector, and the limiting blocks are distributed at intervals along the circumferential direction of the ring body of the first collector.
8. Centrifugal fan, its characterized in that:
comprising an impeller assembly for a centrifugal fan according to any one of claims 1 to 7.
9. An air conditioner, characterized in that:
comprising a centrifugal fan according to claim 8.
10. Air purifier, its characterized in that:
comprising a centrifugal fan according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921159900.5U CN210440276U (en) | 2019-07-22 | 2019-07-22 | Impeller assembly for centrifugal fan, air conditioner and air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921159900.5U CN210440276U (en) | 2019-07-22 | 2019-07-22 | Impeller assembly for centrifugal fan, air conditioner and air purifier |
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| Publication Number | Publication Date |
|---|---|
| CN210440276U true CN210440276U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921159900.5U Active CN210440276U (en) | 2019-07-22 | 2019-07-22 | Impeller assembly for centrifugal fan, air conditioner and air purifier |
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| CN (1) | CN210440276U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050297A (en) * | 2020-09-04 | 2020-12-08 | 青岛海信日立空调系统有限公司 | Ultra-thin indoor unit |
| WO2022085332A1 (en) * | 2020-10-21 | 2022-04-28 | 株式会社デンソー | Blower |
| WO2022153522A1 (en) * | 2021-01-18 | 2022-07-21 | 三菱電機株式会社 | Centrifugal blower |
| CN114811725A (en) * | 2022-05-23 | 2022-07-29 | 单超杰 | Air conditioning system |
-
2019
- 2019-07-22 CN CN201921159900.5U patent/CN210440276U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050297A (en) * | 2020-09-04 | 2020-12-08 | 青岛海信日立空调系统有限公司 | Ultra-thin indoor unit |
| CN112050297B (en) * | 2020-09-04 | 2022-05-17 | 青岛海信日立空调系统有限公司 | Ultra-thin indoor unit |
| WO2022085332A1 (en) * | 2020-10-21 | 2022-04-28 | 株式会社デンソー | Blower |
| JP2022067783A (en) * | 2020-10-21 | 2022-05-09 | 株式会社デンソー | Air blower |
| JP7413973B2 (en) | 2020-10-21 | 2024-01-16 | 株式会社デンソー | Blower |
| WO2022153522A1 (en) * | 2021-01-18 | 2022-07-21 | 三菱電機株式会社 | Centrifugal blower |
| CN114811725A (en) * | 2022-05-23 | 2022-07-29 | 单超杰 | Air conditioning system |
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