CN203548269U - Backward type centrifugal fan - Google Patents

Backward type centrifugal fan Download PDF

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Publication number
CN203548269U
CN203548269U CN201320671509.XU CN201320671509U CN203548269U CN 203548269 U CN203548269 U CN 203548269U CN 201320671509 U CN201320671509 U CN 201320671509U CN 203548269 U CN203548269 U CN 203548269U
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guiding
guide vane
plate
board
mentioned
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林德标
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DAYANG ELECTRIC APPLIANCES FACTORY
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DAYANG ELECTRIC APPLIANCES FACTORY
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Abstract

The utility model provides a backward type centrifugal fan, and belongs to the technical field of fan equipment. The backward type centrifugal fan solves the problem that an existing centrifugal fan is less in air amount and has noise during operation. The backward type centrifugal fan comprises a motor and a centrifugal wind wheel fixedly connected to the outside of a motor rotor, the centrifugal air wheel is cylindrical and comprises an upper end panel and a lower end panel, the upper end panel and the lower end panel are fixedly connected with the motor rotor, an air inlet is formed in the lower end panel, a plurality of guiding blades are fixedly arranged between the upper end panel and the lower end panel, guiding air ways can be formed between the inner lateral wall of the upper end panel and the guiding blades and between the inner lateral wall of the lower end panel and the guiding blades, the guiding blades are in arc-sheet shapes, a first guiding rib and a second guiding rib which divide each guiding blade into three guiding ways are arranged on the corresponding guiding blade along the radian direction of the corresponding guiding blade, and the inner ends of the first guiding ribs and the inner ends of the second guiding ribs slant to the two sides respectively to enable middle guiding ways in the guiding blades to be in horn mouth shapes. The backward type centrifugal fan is simple in structure, low in noise and high in operation efficiency.

Description

A kind of backward type centrifugal blower
Technical field
The utility model belongs to Fan Equipment technical field, relates to a kind of backward type centrifugal blower.
Background technique
Centrifugal blower is the mechanical energy that relies on input, improves supply gas the side by side equipment of body of gas pressure, and it is a kind of driven fluid machinery; Centrifugal blower is widely used in ventilation, the dust discharge and cooling of factory, mine, tunnel, cooling tower, vehicle, boats and ships and building; The ventilation for boiler and industrial furnace and the air inducing that also have.
The working principle of centrifugal blower is: centrifugal blower is according to kinetic energy, to be converted to the principle of potential energy, utilizes the impeller of High Rotation Speed that gas is accelerated, and then slows down, changes the flow direction of gas, makes kinetic energy convert potential energy to.In one-stage centrifugal blower fan, gas is from axially entering impeller, and gas flow changes over radial direction when impeller, then enters Diffuser, in Diffuser gas and changing flow direction cause deceleration, this decelerating effect converts kinetic energy to pressure energy.The increased pressure of this air-flow is mainly to occur in impeller, and next occurs in diffusion process.In Multi-stage centrifugal fan, with return channel, make air-flow enter next impeller, produce higher pressure.
The ordinary construction of centrifugal blower is: centrifugal fan is generally comprised of casing, main shaft, impeller, bearing transmission mechanism and motor etc., and this casing is made firm reliably by steel plate, be divided into integrated type and semi-open type, semi-open type easy access; Impeller, is comprised of blade, curved shroud and dull and stereotyped hub disk; Rotor, should do static balancing and dynamic balancing, guaranteed stability of rotation, functional; Drive part, is comprised of main shaft, bearing housing, rolling bearing and belt.Centrifugal blower pattern on existing market is a lot, as China Patent No. is: the centrifugal blower as described in " 201320253896.5 ", this centrifugal blower comprises housing, support, exhaust outlet and the intake grill being comprised of upper shell and lower shell body, the joint of upper shell and lower shell body is provided with some fixed triangle iron, housing both sides are provided with the stiffening rib being connected with support, intake grill outer end is provided with fixed plate, and housing is provided with the cell body with fixed plate adaptation.And for example China Patent No. is: the centrifugal fan for window type air conditioner that " 01268732.4 " is described, this centrifugal fan for window type air conditioner mainly comprises that a plurality of blades that wheel disc and one end are connected with wheel disc form, described length of blade is greater than half of wheel disc radius, the air-ducting ring of the connection one of the blade the other end and wheel disc coaxial inner conductor; Air-ducting ring stretches out from the end that is connected with blade, and air-ducting ring extension is diminishing circular closing in of diameter.In above-mentioned structure, this wind direction passage is radially air-out; But air output is less, noise is larger, and efficiency is lower.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of backward type centrifugal blower that increases air quantity.
The purpose of this utility model can realize by following technical proposal: a kind of backward type centrifugal blower, comprise motor and be connected in the centrifugal wind wheel outside rotor, described centrifugal wind wheel is cylindric, it is characterized in that, described centrifugal wind wheel comprises the upper end plate being connected with rotor, lower end board, in described lower end board, offer intake grill, between upper end plate and lower end board, set firmly the madial wall that is equipped with some energy and upper end plate, lower end board madial wall forms the guide vane in guiding air channel, the curved sheet of described guide vane, radian direction along guide vane on each guide vane is provided with the guiding rib one that each guide vane is divided into three guiding roads, guiding rib two, the inner of the inner of described guiding rib one and guiding rib two tilts to make the middle guiding road on guide vane be horn mouth to both sides respectively.
This backward type centrifugal blower mainly improves the direction of guide vane wind direction incision, radian direction along guide vane on each guide vane is provided with the guiding rib one that each guide vane is divided into three guiding roads, guiding rib two, this guiding rib one, guiding rib two is formed to another plane extruding by a plane of guide vane respectively, this guiding rib one, guiding rib two can change the incision direction of guide vane wind direction, increase the air-supply air quantity of guide vane, the inner of the inner of guiding rib one and guiding rib two tilts to make the middle guiding road on guide vane be horn mouth to both sides respectively, this horn mouth makes the air quantity of middle guiding road incision larger, the steadily rotation of guide vane, the noise that this guide vane rotates is less.
In above-mentioned a kind of backward type centrifugal blower, on two long limit arris of each guide vane, be respectively arranged with connection teeth, in upper end plate, lower end board, be respectively arranged with the connecting groove corresponding with connection teeth, above-mentioned connection teeth is located in connecting groove and bending is locked at guide vane in above-mentioned upper end plate, lower end board.It is more stable that the object arranging like this makes each guide vane be connected with upper end plate, lower end board, plays the effect of noise reduction.
In above-mentioned a kind of backward type centrifugal blower, the outside axial turning of inside edge of described lower end board intake grill has circular arc flange, the inner arris that the inner of above-mentioned guide vane extends to above-mentioned circular arc flange place and this guide vane is arc arris, has the camber line arris portion that laminating is resisted against above-mentioned circular arc flange on the guide vane arris leaning with above-mentioned circular arc flange.The object arranging like this makes guide vane incision wind direction more steady.
In above-mentioned a kind of backward type centrifugal blower, on described upper end plate, offer mounting hole, above-mentioned motor is located in mounting hole, circumferencial direction along mounting hole on the upper end plate at mounting hole edge offers several attachment holes, and this upper end plate passes attachment hole by bolt upper end plate is connected on above-mentioned rotor.
In above-mentioned a kind of backward type centrifugal blower, described upper end plate, lower end board and guide vane respectively aluminium material are made.
Compared with prior art, this backward type centrifugal blower mainly on each guide vane the radian direction along guide vane be provided with guiding rib one, the guiding rib two that each guide vane is divided into three guiding roads, the inner of the inner of described guiding rib one and guiding rib two tilts to make the middle guiding road on guide vane be horn mouth to both sides respectively; Blower fan in the running, on this guide vane, there is guiding rib one, guiding rib two, this guiding rib one, guiding rib two are divided into upper guiding road, middle guiding road and lower guiding road by guide vane, and upper guiding road, middle guiding road and lower guiding road incision wind direction are comparatively stable, increase air-supply air quantity; The utility model is simple in structure, and air-supply air quantity is larger, and noise is little, and operational efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the perspective view of this backward type centrifugal blower.
In figure, 1, motor; 2, upper end plate; 3, lower end board; 4, intake grill; 5, guide vane; 6, guiding rib one; 7, guiding rib two; 8, connection teeth; 9, circular arc flange; 10, arc arris; 11, camber line arris portion; 12, bolt.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this backward type centrifugal blower is mainly comprised of motor 1 and the centrifugal wind wheel being connected in outside motor 1 rotor, it is cylindric that centrifugal wind wheel is, centrifugal wind wheel comprises the upper end plate 2 being connected with motor 1 rotor, lower end board 3, in lower end board 3, offer intake grill 4, between upper end plate 2 and lower end board 3, set firmly the madial wall that is equipped with some energy and upper end plate 2, lower end board 3 madial walls form the guide vane 5 in guiding air channel, the curved sheet of guide vane 5, radian direction along guide vane 5 on each guide vane 5 is provided with the guiding rib 1 that each guide vane 5 is divided into three guiding roads, guiding rib 27, the inner of the inner of guiding rib 1 and guiding rib 27 tilts to make the middle guiding road on guide vane 5 be horn mouth to both sides respectively.This guide vane 5 with the concrete linkage structure of upper end plate 2, lower end board 3 is: on two long limit arris of each guide vane 5, be respectively arranged with connection teeth 8, in upper end plate 2, lower end board 3, be respectively arranged with the connecting groove corresponding with connection teeth 8, connection teeth 8 is located in connecting groove and bending is locked at guide vane 5 in above-mentioned upper end plate 2, lower end board 3.When Practical manufacturing, the outside axial turning of inside edge of these lower end board 3 intake grills 4 has circular arc flange 9, the inner arris that the inner of guide vane 5 extends to circular arc flange 9 places and this guide vane 5 is arc arris 10, has the camber line arris portion 11 that laminating is resisted against above-mentioned circular arc flange 9 on guide vane 5 arris that lean with above-mentioned circular arc flange 9.
The concrete linkage structure of this centrifugal wind wheel and motor 1 is: on the upper end plate 2 in centrifugal wind wheel, offer mounting hole, motor 1 is located in mounting hole, circumferencial direction along mounting hole on the upper end plate 2 at mounting hole edge offers several attachment holes, and this upper end plate 2 is connected in upper end plate 2 on above-mentioned motor 1 rotor through attachment hole by bolt 12.During Practical manufacturing, this upper end plate 2, lower end board 3 and guide vane 5 respectively aluminium material are made.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used herein: motor 1; Upper end plate 2; Lower end board 3; Intake grill 4; Guide vane 5; Guiding rib 1; Guiding rib 27; Connection teeth 8; Circular arc flange 9; Arc arris 10; Camber line arris portion 11; Bolt 12 terms such as grade, but do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.

Claims (5)

1. a backward type centrifugal blower, comprise motor (1) and be connected in the centrifugal wind wheel outside motor (1) rotor, described centrifugal wind wheel is cylindric, it is characterized in that, described centrifugal wind wheel comprises the upper end plate (2) being connected with motor (1) rotor, lower end board (3), in described lower end board (3), offer intake grill (4), between upper end plate (2) and lower end board (3), set firmly the madial wall that is equipped with some energy and upper end plate (2), lower end board (3) madial wall forms the guide vane (5) in guiding air channel, the curved sheet of described guide vane (5), in the upper radian direction along guide vane (5) of each guide vane (5), be provided with the guiding rib one (6) that each guide vane (5) is divided into three guiding roads, guiding rib two (7), the inner of the inner of described guiding rib one (6) and guiding rib two (7) tilts to make the middle guiding road on guide vane (5) be horn mouth to both sides respectively.
2. a kind of backward type centrifugal blower according to claim 1, it is characterized in that, on the two long limit arris of each guide vane (5), be respectively arranged with connection teeth (8), in upper end plate (2), lower end board (3), be respectively arranged with the connecting groove corresponding with connection teeth (8), above-mentioned connection teeth (8) is located in connecting groove and bending is locked at guide vane (5) in above-mentioned upper end plate (2), lower end board (3).
3. a kind of backward type centrifugal blower according to claim 2, it is characterized in that, the outside axial turning of inside edge of described lower end board (3) intake grill (4) has circular arc flange (9), the inner of above-mentioned guide vane (5) extends to that above-mentioned circular arc flange (9) is located and the inner arris of this guide vane (5) is arc arris (10), on guide vane (5) arris leaning with above-mentioned circular arc flange (9), has the camber line arris portion (11) that laminating is resisted against above-mentioned circular arc flange (9).
4. a kind of backward type centrifugal blower according to claim 3, it is characterized in that, described upper end plate offers mounting hole on (2), above-mentioned motor (1) is located in mounting hole, the upper circumferencial direction along mounting hole of upper end plate (2) at mounting hole edge offers several attachment holes, and this upper end plate (2) is connected in upper end plate (2) on above-mentioned motor (1) rotor through attachment hole by bolt (12).
5. a kind of backward type centrifugal blower according to claim 4, is characterized in that, described upper end plate (2), lower end board (3) and guide vane (5) respectively aluminium material are made.
CN201320671509.XU 2013-10-29 2013-10-29 Backward type centrifugal fan Active CN203548269U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090104A (en) * 2015-06-25 2015-11-25 海信(山东)空调有限公司 Air conditioner outdoor unit with inclined centrifugal fan and air conditioner
CN106121900A (en) * 2016-08-19 2016-11-16 浙江景宁周氏机械有限公司 High-efficient water wheel generator
CN106761946A (en) * 2016-12-15 2017-05-31 深圳福世达动力科技有限公司 Turbomachine arteries and veins flap-type blade
CN107956738A (en) * 2016-10-18 2018-04-24 泰州市飞速消防设备有限公司 A kind of Novel wind spray wind wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105090104A (en) * 2015-06-25 2015-11-25 海信(山东)空调有限公司 Air conditioner outdoor unit with inclined centrifugal fan and air conditioner
CN106121900A (en) * 2016-08-19 2016-11-16 浙江景宁周氏机械有限公司 High-efficient water wheel generator
CN107956738A (en) * 2016-10-18 2018-04-24 泰州市飞速消防设备有限公司 A kind of Novel wind spray wind wheel
CN106761946A (en) * 2016-12-15 2017-05-31 深圳福世达动力科技有限公司 Turbomachine arteries and veins flap-type blade

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