CN206111671U - Centrifugal fan inlet scoop structure - Google Patents
Centrifugal fan inlet scoop structure Download PDFInfo
- Publication number
- CN206111671U CN206111671U CN201620760676.5U CN201620760676U CN206111671U CN 206111671 U CN206111671 U CN 206111671U CN 201620760676 U CN201620760676 U CN 201620760676U CN 206111671 U CN206111671 U CN 206111671U
- Authority
- CN
- China
- Prior art keywords
- impeller
- seal
- inlet scoop
- protecgulum
- sealing member
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal fan inlet scoop structure, including the impeller, set up at the impeller protecgulum of impeller front end, be located the cover that induced drafts of impeller protecgulum, it forms the inlet scoop to induced draft between cover and the impeller protecgulum, the week portion that the impeller protecgulum is close to the inlet scoop sets up first sealing member, the cover that induced drafts is setting up the second sealing member near inlet scoop department, form labyrinth seal between first sealing member and the second sealing member. The sealed clearance of this centrifugal fan inlet scoop structure reduces, seals increase in volume, way extension, and the air leakage reduces, and the interior loss of fan reduces, and the efficiency of fan increases, energy consumption reduction, operation cost reduction.
Description
Technical field
This utility model is related to Fan Equipment technical field, relates in particular to a kind of centrifugal blower exhaust inlet structure.
Background technology
Operationally, in machine there is higher-pressure region and low-pressure area in the impeller of blower fan.Air-flow is done work by impeller, Jing impeller outers
Edge, spiral case and spiral case air outlet region are air-flow higher-pressure region；At air-flow Jing inlet scoops, impeller eye（Impeller blade does to air-flow
Locate before work(）Region, be air-flow low-pressure area.Higher-pressure region is separated with low-pressure area by the impeller of the inlet scoop and rotation fixed.
Because the impeller junction of fixed inlet scoop and rotation has gap δ, blower fan is natural in running
Some gas is from higher-pressure region（P1、V1）, through the slit δ flows to low-pressure area（P2、V2）, cause flow（Volume）Loss, causes
The internal loss of blower fan increases, and the efficiency of blower fan is reduced, and energy consumption increase, operating cost is improved.
The content of the invention
The purpose of this utility model is the defect for above-mentioned prior art, there is provided a kind of centrifugal blower inlet scoop knot
Structure, overcomes internal loss increase, the efficiency reduction of blower fan, energy consumption increase, operating cost that the exhaust inlet structure of prior art is caused
The defect of raising.
To achieve these goals, the technical solution of the utility model is：
Centrifugal blower exhaust inlet structure, including impeller, be arranged on the impeller protecgulum of wheel nose, positioned at the suction of impeller protecgulum
Fan housing, between the suspended hood and impeller protecgulum inlet scoop is formed；The impeller protecgulum arranges first near all portions of inlet scoop
Sealing member, the suspended hood is arranging second seal at inlet scoop, between the first seal and second seal
Form labyrinth sealing.
Used as the improvement to above-mentioned technical proposal, the first seal is the flute profile knot towards second seal opening
Structure, the second seal is Z-shaped opening structure, and a side of the second seal is fixedly connected with the periphery of suspended hood, another
While extending in the bathtub construction of first seal.
As the improvement to above-mentioned technical proposal, the first seal and impeller protecgulum, the second seal and suction
Fan housing is by riveting or is welded to connect.
Compared with prior art, this utility model has the advantages and positive effects that：
Centrifugal blower exhaust inlet structure of the present utility model,
1st, the processing technology of machine parts did not change, the performance inconvenience of blower fan；
2nd, the first seal on impeller protecgulum is designed to "] ", the second seal on suspended hood is designed to " Z ", system
Make process is simple；
3rd, first seal, second seal are separately mounted on impeller protecgulum and suspended hood, can be using riveting, welding
Technique for fixing, after can both be separately fixed on impeller, adsorption orifice, impeller is assembled with suspended hood；Also can be by impeller, suction
After fan housing is assembled, then adjust, the corresponding sealing member of solid.Install, use, safeguarding flexibly, conveniently；
4th, seal clearance reduces, number of seals increases, approach is lengthened, and inleakage is reduced, and the internal loss of blower fan is reduced, blower fan
Efficiency increase, energy consumption reduce, operating cost reduce.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlargement structural representation of Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, any modification, equivalent substitution and improvements made etc., should be included in of the present utility model
Within protection domain.
As shown in Figure 1, 2, centrifugal blower exhaust inlet structure of the present utility model, including impeller 4, it is arranged on the front end of impeller 4
Impeller protecgulum 5, positioned at the suspended hood 3 of impeller protecgulum 5, form inlet scoop between the suspended hood 3 and impeller protecgulum 5；It is described
Impeller protecgulum 5 arranges first seal 1 near all portions of inlet scoop, and it is close that the suspended hood 3 arranges second at close inlet scoop
Sealing 2, between the first seal 1 and second seal 2 labyrinth sealing is formed.
The first seal 1 is the bathtub construction towards the opening of second seal 2, and the second seal 2 is opened for Z-shaped
Structure a, side of the second seal 2 is fixedly connected with the periphery of suspended hood 3, and another side extend into the groove of first seal 1
In shape structure.
The first seal 1 is with impeller protecgulum 5, the second seal 2 with suspended hood 3 by riveting or the company of welding
Connect.
Due to fixed suspended hood and rotation impeller protecgulum junction there is gap δ, blower fan in running, very from
Some right gas is from higher-pressure region（P1、V1）, through the slit δ flows to low-pressure area（P2、V2）, cause flow（Volume）Loss,
The airflow capacity of this partial loss, equally also obtain energy, and its size depends on inlet scoop（Fixture）With impeller（Rotation
Part）Sealing property and geometry, according to fluid mechanics principle, the gas of flowing to cross road shape more complicated, for fluid
The loss of energy is also bigger, this principle is applied on the inlet scoop of blower fan and the sealing of impeller, and sealing junction shape is got over
Complexity, sealing effectiveness is also better.The design uses above-mentioned principle, and the sealing of suspended hood and impeller protecgulum is designed to into labyrinth type.
Seal clearance reduces, number of seals increases, approach is lengthened, and inleakage is reduced, and the internal loss of blower fan is reduced, and the efficiency of blower fan increases
Plus, energy consumption is reduced, and operating cost is reduced；
Compared with prior art, this utility model has the advantages and positive effects that：
Centrifugal blower exhaust inlet structure of the present utility model,
1st, the processing technology of machine parts did not change, the performance inconvenience of blower fan；
2nd, the first seal on impeller protecgulum is designed to "] ", the second seal on suspended hood is designed to " Z ", system
Make process is simple；
3rd, first seal, second seal are separately mounted on impeller protecgulum and suspended hood, can be using riveting, welding
Technique for fixing, after can both be separately fixed on impeller, adsorption orifice, impeller is assembled with suspended hood；Also can be by impeller, suction
After fan housing is assembled, then adjust, the corresponding sealing member of solid.Install, use, safeguarding flexibly, conveniently；
4th, seal clearance reduces, number of seals increases, approach is lengthened, and inleakage is reduced, and the internal loss of blower fan is reduced, blower fan
Efficiency increase, energy consumption reduce, operating cost reduce.
Claims (3)
1. centrifugal blower exhaust inlet structure, including impeller, the impeller protecgulum for being arranged on wheel nose, positioned at the air draught of impeller protecgulum
Cover, between the suspended hood and impeller protecgulum inlet scoop is formed；It is characterized in that：All portion of the impeller protecgulum near inlet scoop
First seal is set, and the suspended hood is in the setting second seal at inlet scoop, and the first seal is close with second
Labyrinth sealing is formed between sealing.
2. centrifugal blower exhaust inlet structure according to claim 1, it is characterised in that the first seal is towards the
The bathtub construction of two sealing member openings, the second seal is Z-shaped opening structure, a side of the second seal and suspended hood
Periphery be fixedly connected, another side is extend in the bathtub construction of first seal.
3. centrifugal blower exhaust inlet structure according to claim 1, it is characterised in that：Before the first seal and impeller
Lid, the second seal are connected with suspended hood by riveting or being welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760676.5U CN206111671U (en) | 2016-07-20 | 2016-07-20 | Centrifugal fan inlet scoop structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760676.5U CN206111671U (en) | 2016-07-20 | 2016-07-20 | Centrifugal fan inlet scoop structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206111671U true CN206111671U (en) | 2017-04-19 |
Family
ID=58511162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620760676.5U Expired - Fee Related CN206111671U (en) | 2016-07-20 | 2016-07-20 | Centrifugal fan inlet scoop structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206111671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917100A (en) * | 2017-10-26 | 2018-04-17 | 珠海格力电器股份有限公司 | Connection structure and air conditioner of water conservancy diversion circle and fan impeller front bezel |
-
2016
- 2016-07-20 CN CN201620760676.5U patent/CN206111671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917100A (en) * | 2017-10-26 | 2018-04-17 | 珠海格力电器股份有限公司 | Connection structure and air conditioner of water conservancy diversion circle and fan impeller front bezel |
| CN107917100B (en) * | 2017-10-26 | 2019-03-26 | 珠海格力电器股份有限公司 | Connection structure and air conditioner of water conservancy diversion circle and fan impeller front bezel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20180720 |