CN202867334U - Draught fan air inlet device - Google Patents

Draught fan air inlet device Download PDF

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Publication number
CN202867334U
CN202867334U CN 201220514315 CN201220514315U CN202867334U CN 202867334 U CN202867334 U CN 202867334U CN 201220514315 CN201220514315 CN 201220514315 CN 201220514315 U CN201220514315 U CN 201220514315U CN 202867334 U CN202867334 U CN 202867334U
Authority
CN
China
Prior art keywords
annular slab
air inlet
board
fan air
blower fan
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
Application number
CN 201220514315
Other languages
Chinese (zh)
Inventor
赵国强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO FAN CO Ltd
Original Assignee
NINGBO FAN CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NINGBO FAN CO Ltd filed Critical NINGBO FAN CO Ltd
Priority to CN 201220514315 priority Critical patent/CN202867334U/en
Application granted granted Critical
Publication of CN202867334U publication Critical patent/CN202867334U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a draught fan air inlet device which comprises a first annular board and a plurality of reinforcing ribs arranged on the first annular board. A part of the first annular board protrudes towards the sides of the reinforcing ribs, wherein the part of the first annular board is close to the center of a circle. Ends of the reinforcing ribs which are close to the center of the first annular board are connected with a cylindric board. A radius of the side of the air inlet of the cylindric board is greater than a radius of the side of the air outlet of the cylindric board. The side of air inlet of the cylindric board is provided with a second annular board. Due to the fact that a front shroud and an air inlet are integrated, and a hollow part between the front shroud and the air inlet is reduced, so that the draught fan air inlet device effectively reduces eddies, reduces production and assembly time, and improves working efficiency.

Description

A kind of blower fan air intake device
Technical field
The utility model relates to a kind of blower fan, particularly a kind of blower fan air intake device.
Background technique
To be China be called for short the custom of gas compression and gas conveying machinery blower fan, and usually said blower fan comprises ventilator, blower, wind-driven generator.Gas compression and gas conveying machinery are that the mechanical energy of rotation is converted to gas pressure energy and kinetic energy, and the machinery that gas is transferred out.The main structural components of blower fan is impeller, casing, air intake device, support, motor, belt pulley, coupling, baffler, driving component (bearing) etc.Traditional blower fan air intake device all is comprised of the front shroud intake grill middle with being arranged on front shroud, so not only need to make production and the installation time that two parts have prolonged product, increased cost of production, and intake grill and the larger hollow parts 100 of front shroud cooperation meeting generation, as shown in Figure 1, will produce relatively large eddy current, affect the overall performance of blower fan.
Summary of the invention
The utility model is not enough for prior art, and a kind of blower fan air intake device is provided, and this kind blower fan air intake device can reduce hollow parts, can effectively reduce eddy current, the overall performance of raising system, and can effectively reduce the production installation time, increase work efficiency.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of blower fan air intake device, comprise first annular slab and the some stiffening ribs that are arranged on described the first annular slab, described the first annular slab is protruding to the stiffening rib side near center of circle part, described stiffening rib is connected with the tubular plate near described the first annular slab center one end, described tubular plate inlet side radius is greater than the air side radius, and described tubular plate inlet side also is provided with the second annular slab.
In the technique scheme, preferred, described the first annular slab is the ring plate.
In the technique scheme, preferred, described the second annular slab is the ring plate.
In the technique scheme, preferred, described tubular plate is cylindrical plates.
In the technique scheme, preferred, be provided with some the first through holes on described the first annular slab, the first through hole can be used for using bolt to fix this device.
In the technique scheme, preferred, be provided with some the second through holes on described the second annular slab, the second through hole can be used for using bolt to fix this device.
The utility model compared with prior art, have following beneficial effect: the utility model is improved by the intake grill that traditional front shroud is middle with being arranged on front shroud, so that front shroud and intake grill are structure as a whole, hollow parts reduces between front shroud and the intake grill, can effectively reduce eddy current, and reduced the production installation time, increased work efficiency.
Description of drawings
Fig. 1 is traditional blower fan air intake device scheme of installation.
Fig. 2 is the utility model embodiment's plan view.
Fig. 3 is that sectional view is looked on the utility model embodiment's the right side.
Fig. 4 is the utility model embodiment's scheme of installation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail: referring to Fig. 2 to Fig. 4, a kind of blower fan air intake device, comprise first annular slab 1 and the some stiffening ribs 2 that are arranged on described the first annular slab 1, be eight stiffening ribs 2 in the present embodiment, described the first annular slab 1 to stiffening rib 2 sides projection, is provided with some the first through holes 11 near center of circle part on described the first annular slab 1.Described stiffening rib 2 is connected with tubular plate 3 near described the first annular slab 1 center one end, described tubular plate 3 inlet side radiuses are greater than the air side radius, described tubular plate 3 inlet sides also are provided with the second annular slab 4, are provided with some the second through holes 41 on described the second annular slab 4.The first annular slab 1 described in the present embodiment and described the second annular slab 4 are the ring plate, and described tubular plate 3 is cylindrical plates.
This kind blower fan air intake device is because front shroud and intake grill are structure as a whole, and hollow parts 100 reduces between front shroud and the intake grill, can effectively reduce eddy current, and reduce the production installation time, increases work efficiency.

Claims (6)

1. blower fan air intake device, comprise first annular slab (1) and be arranged on some stiffening ribs (2) on described the first annular slab (1), described the first annular slab (1) is protruding to stiffening rib (2) side near center of circle part, it is characterized in that: described stiffening rib (2) is connected with tubular plate (3) near described the first annular slab (1) center one end, described tubular plate (3) inlet side radius is greater than the air side radius, and described tubular plate (3) inlet side also is provided with the second annular slab (4).
2. a kind of blower fan air intake device as claimed in claim 1, it is characterized in that: described the first annular slab (1) is the ring plate.
3. a kind of blower fan air intake device as claimed in claim 1, it is characterized in that: described the second annular slab (4) is the ring plate.
4. a kind of blower fan air intake device as claimed in claim 1 is characterized in that: described tubular plate (3) is cylindrical plates.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of blower fan air intake device is characterized in that: be provided with some the first through holes (11) on described the first annular slab (1).
6. as claimed in claim 1 or 2 or 3 or 4 a kind of blower fan air intake device is characterized in that: be provided with some the second through holes (41) on described the second annular slab (4).
CN 201220514315 2012-10-09 2012-10-09 Draught fan air inlet device Expired - Fee Related CN202867334U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220514315 CN202867334U (en) 2012-10-09 2012-10-09 Draught fan air inlet device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220514315 CN202867334U (en) 2012-10-09 2012-10-09 Draught fan air inlet device

Publications (1)

Publication Number Publication Date
CN202867334U true CN202867334U (en) 2013-04-10

Family

ID=48034057

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220514315 Expired - Fee Related CN202867334U (en) 2012-10-09 2012-10-09 Draught fan air inlet device

Country Status (1)

Country Link
CN (1) CN202867334U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246570A (en) * 2016-08-15 2016-12-21 镇江市丹徒区粮机厂有限公司 The most extraordinary a kind of centrifugal blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246570A (en) * 2016-08-15 2016-12-21 镇江市丹徒区粮机厂有限公司 The most extraordinary a kind of centrifugal blower

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130410

Termination date: 20141009

EXPY Termination of patent right or utility model