CN203175969U - Multiple-blade centrifugal blower - Google Patents
Multiple-blade centrifugal blower Download PDFInfo
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- CN203175969U CN203175969U CN 201320161279 CN201320161279U CN203175969U CN 203175969 U CN203175969 U CN 203175969U CN 201320161279 CN201320161279 CN 201320161279 CN 201320161279 U CN201320161279 U CN 201320161279U CN 203175969 U CN203175969 U CN 203175969U
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Abstract
The utility model relates to the field of ventilating devices, and discloses a multiple-blade centrifugal blower, whichcomprises an annular blade baseplate, a hub, a guide ring and a plurality of blades, wherein inner ends and outer ends of all the blades arranged on the annular blade baseplate form blade inner circles and blade outer circlesrespectively; the diameter of each blade inner circle is 65 to 74 percent of the diameter of eachblade outer circle; the diameter of the blade outer circles ranges from 420 to 480mm; and the blades are twisted from the air inlet ends to the air outlet ends, upper air inlet angles are different from lower air inlet anglesin size, and upper air outlet angles are different from lower air outlet angles in size. The multiple-blade centrifugal blower has the advantages of novel structure, large air volume and low noise.
Description
Technical field
The utility model relates to the ventilation equipment field, relates in particular to a kind of multiple-blade centrifugal blower.
Background technique
The multiple-blade centrifugal blower is product commonly used on the air-conditioning, centrifugal blower comprises ring leaf base plate, wheel hub, baffle liner and multi-disc blade, all vanes fixed are between ring leaf base plate and baffle liner, wheel hub and ring leaf base plate inboard are connected as a single entity, wheel hub is concentric with ring leaf base plate, the center at wheel hub top arranges axle sleeve, and motor shaft passes the axle sleeve upper shaft hole and drives the centrifugal blower rotation during use.The deficiency that existing multiple-blade centrifugal blower exists is that the fixed position of blade quantity, blade size and blade is unreasonable, causes multiple-blade centrifugal blower air quantity little big with noise.
Summary of the invention
Goal of the invention of the present utility model is in order to solve the deficiency that existing centrifugal blower exists, to disclose a kind of novel structure, the multiple-blade centrifugal blower that air quantity is big and noise is low.
In order to realize above-mentioned purpose, the utility model has adopted following technological scheme:
The multiple-blade centrifugal blower, comprise ring leaf base plate, wheel hub, baffle liner and multi-disc blade, all blades all are fixed between ring leaf base plate and the baffle liner, all the inner and outer ends that are arranged in the blade on the ring leaf base plate form circle and blade cylindrical in the blade respectively, wheel hub and ring leaf base plate inboard are connected as a single entity, the center at wheel hub top is provided with shaft hole sleeve, and diameter of a circle is the diameter 65%-74% of blade cylindrical in the blade, and the diameter of blade cylindrical is between 420mm-480mm; Blade air intake to outlet air end is distorted shape, and the air intake angle of blade is divided into the following air intake angle near the last air intake angle of baffle liner and close ring leaf base plate, and last air intake angle is different with following air intake angle angle; The air-out angle of blade is divided near the last air-out angle of baffle liner and close ring leaf base plate following and goes out the air intake angle, last air-out angle with under to go out air intake angle angle different.
As preferably, blade is 5 or 7 or 8 or 9.
As preferably, blade outer lower end portion and ring leaf plate outer side are held level with both hands together.
As preferably, last air intake angle and following air intake angle angle all are not more than 10 °, and go up air intake angle angle less than descending air intake angle angle; All between 20 °-45 °, last air-out angle angle is less than following air-out angle angle, and the difference between last air-out angle angle and the following air-out angle angle is between 5 °-18 ° for last air-out angle and following air-out angle.
As preferably, last air intake angle is the air intake surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface top circular arc tangential line, following air intake angle is air intake surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface bottom circular arc tangential line, last air-out angle is the outlet air surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface top circular arc tangential line, and following air-out angle is place, outlet air surface bottom with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface bottom circular arc tangential line.
Adopted a kind of multiple-blade centrifugal blower of above-mentioned technological scheme, diameter of a circle is the diameter 65%-74% of blade cylindrical in the blade, and the diameter of blade cylindrical is between 420mm-480mm, and air output is big.Blade air intake to outlet air end is distorted shape, and last air intake angle is different with following air intake angle angle, last air-out angle with under to go out air intake angle angle different, make the air-out of blade be linear change along the blade height direction, can effectively weaken the noise energy stack, reduce noise.The advantage of this multiple-blade centrifugal blower is novel structure, and air quantity is big and noise is low.
Description of drawings
Fig. 1: the utility model embodiment's multiple-blade centrifugal blower structural representation.
Fig. 2: the multiple-blade centrifugal blower schematic representation one that baffle liner is not installed among the utility model embodiment.
Fig. 3: the multiple-blade centrifugal blower schematic representation two that baffle liner is not installed among the utility model embodiment.
Embodiment
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3 embodiment of the present utility model is made a detailed explanation.
As Fig. 1, Fig. 2 and a kind of multiple-blade centrifugal blower shown in Figure 3, mainly comprise ring leaf base plate 1, wheel hub 2, blade 3 and baffle liner 4, blade is 7, all blades 3 all are fixed between ring leaf base plate 1 and the baffle liner 4, wheel hub 2 is connected as a single entity with ring leaf base plate 1 inboard, wheel hub 2 is concentric with ring leaf base plate 1, and the center at wheel hub 2 tops is provided with shaft hole sleeve 5, and wheel hub 2 is provided with a plurality of radiation holes 21.
All the inner and outer ends that are arranged in 7 blades on the ring leaf base plate 1 form circle and blade cylindrical in the blade respectively, diameter of a circle is the diameter 65%-74% of blade cylindrical in the blade, the diameter of blade cylindrical is between 420mm-480mm, circular diameter is 324.5mm in the concrete blade, and the blade outside diameter is 462mm.Air output is big.
Above-mentioned blade 3 also can be 5 or 8 or 9.
Claims (5)
1. multiple-blade centrifugal blower, comprise ring leaf base plate, wheel hub, baffle liner and multi-disc blade, all blades all are fixed between ring leaf base plate and the baffle liner, all the inner and outer ends that are arranged in the blade on the ring leaf base plate form circle and blade cylindrical in the blade respectively, wheel hub and ring leaf base plate inboard are connected as a single entity, the center at wheel hub top is provided with shaft hole sleeve, it is characterized in that diameter of a circle is the diameter 65%-74% of blade cylindrical in the blade, the diameter of blade cylindrical is between 420mm-480mm; Blade air intake to outlet air end is distorted shape, and the air intake angle of blade is divided into the following air intake angle near the last air intake angle of baffle liner and close ring leaf base plate, and last air intake angle is different with following air intake angle angle; The air-out angle of blade is divided into the following air-out angle near the last air-out angle of baffle liner and close ring leaf base plate, and last air-out angle is different with following air-out angle angle.
2. a kind of multiple-blade centrifugal blower according to claim 1 is characterized in that blade is 5 or 7 or 8 or 9.
3. a kind of multiple-blade centrifugal blower according to claim 1 is characterized in that blade outer lower end portion and ring leaf plate outer side hold level with both hands together.
4. a kind of multiple-blade centrifugal blower according to claim 1 is characterized in that air intake angle and following air intake angle angle all are not more than 10 °, and goes up air intake angle angle less than following air intake angle angle; All between 20 °-45 °, last air-out angle angle is less than following air-out angle angle, and the difference between last air-out angle angle and the following air-out angle angle is between 5 °-18 ° for last air-out angle and following air-out angle.
5. a kind of multiple-blade centrifugal blower according to claim 1, it is characterized in that the air intake angle is the air intake surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface top circular arc tangential line, following air intake angle is air intake surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface bottom circular arc tangential line, last air-out angle is the outlet air surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface top circular arc tangential line, and following air-out angle is place, outlet air surface bottom with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface bottom circular arc tangential line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161279 CN203175969U (en) | 2013-04-02 | 2013-04-02 | Multiple-blade centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161279 CN203175969U (en) | 2013-04-02 | 2013-04-02 | Multiple-blade centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175969U true CN203175969U (en) | 2013-09-04 |
Family
ID=49072672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161279 Expired - Lifetime CN203175969U (en) | 2013-04-02 | 2013-04-02 | Multiple-blade centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150184663A1 (en) * | 2013-12-30 | 2015-07-02 | Dongbu Daewoo Electronics Corporation | Centrifugal fan for devices including refrigerators |
-
2013
- 2013-04-02 CN CN 201320161279 patent/CN203175969U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150184663A1 (en) * | 2013-12-30 | 2015-07-02 | Dongbu Daewoo Electronics Corporation | Centrifugal fan for devices including refrigerators |
| US9885361B2 (en) * | 2013-12-30 | 2018-02-06 | Dongbu Daewoo Electronics Corporation | Centrifugal fan for devices including refrigerators |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
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| CX01 | Expiry of patent term |