High-performance centrifugal fan

Abstract

The utility model relates to the technical field of fans, and discloses a high-performance centrifugal fan which comprises a fan shell mechanism, the fan shell mechanism is provided with an active air guide mechanism and comprises an air guide cover, and an air inlet at the front end of the air guide cover is fixedly connected with a necking cover. And an air outlet guide cover is fixedly mounted at an air outlet at one end below the wind scooper. The high-efficiency driving structure design is adopted, the high-efficiency variable frequency motor is selected, the energy loss of the motor is reduced, the impeller and runner design is optimized, the impeller is eccentrically arranged in the wind scooper, and the air outlet guide cover is fixedly installed at the air outlet at one end below the wind scooper, so that the energy loss of the motor is reduced. And meanwhile, the necking cover is fixedly mounted at the air inlet at the front end of the air guide cover, so that the resistance loss in the air flowing process is reduced, the air guide efficiency of the fan is improved, the air flows more smoothly, and the energy conversion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, concretely is a high performance centrifugal fan. BACKGROUND

[0002] The centrifugal fan is according to the principle of kinetic energy conversion for potential energy, utilizes high-speed rotating impeller to accelerate gas, then decelerates, changes flow direction, makes kinetic energy conversion into potential energy (pressure).In single-stage centrifugal fan, gas enters impeller from axial, gas changes into radial when passing through impeller, then enters diffuser.In diffuser, gas changes flow direction and pipe cross section area increases to make airflow decelerate, and this deceleration effect converts kinetic energy into pressure energy.

[0003] The existing high performance centrifugal fan still has the following problems when using: in some large industrial application scenarios or long time running ventilation system, although the high performance centrifugal fan is high in efficiency, but energy consumption is still a significant problem, especially when the fan needs to run under the working condition of high speed, high air volume and high pressure, motor power demand is large, leading to energy cost increase. UTILITY MODEL CONTENTS

[0004] (I) the technical problem solved.

[0005] In view of the deficiencies of prior art, the utility model provides a high performance centrifugal fan, solves the problems proposed in background art.

[0006] (II) technical scheme.

[0007] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a high performance centrifugal fan, including fan shell mechanism, the fan shell mechanism is equipped with initiative wind guide mechanism, the fan shell mechanism includes a wind scooper, the air inlet at the front end of the wind scooper is fixedly connected with the necking cover, the air outlet at the lower one end of the wind scooper is fixedly installed with the air outlet guide cover, the initiative wind guide mechanism includes a base, the initiative wind guide mechanism further includes the impeller eccentrically arranged in the upper one end of wind scooper, the impeller is coaxially arranged with the necking cover, the rear end of the impeller is provided with drive mechanism, the drive mechanism includes the frequency conversion motor fixedly connected on the other side of the top end of base.

[0008] As a further scheme of the utility model: the bottom base one end upper and lower two side walls between the establishment has the lightening groove, the bottom base top and located lightening groove opening fixedly connected with frame, the frame front end fixedly connected with the wind scooper, the wind scooper inner side wall rear end establishment has the cooperation hole, the wind scooper outer side wall rear end fixedly connected with alloy steel sheet, the alloy steel sheet front and rear two side walls between the cooperation hole establishment has the through -hole, the cooperation hole with the through -hole in fixed mounting has the bearing, and the bearing inner side rotates and is fixedly connected with the connecting shaft sleeve, the connecting shaft front end fixedly connected with the impeller and with the impeller coaxial arrangement.

[0009] As a further scheme of the utility model: the variable frequency motor rear side drive end fixedly connected with a pulley, the connecting shaft rear end also fixedly connected with a pulley, two the pulley outside sleeve installation has same transmission belt.

[0010] As a further scheme of the utility model: the alloy steel sheet rear end fixedly connected with support frame, the support frame both ends upper and lower two side walls between the establishment has the through -hole, and the through -hole installs the bolt, two the bolt fixed mounting in frame top.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、 the utility model discloses a high -efficient drive structure design is adopted, and the variable frequency motor with high efficiency is selected, and the energy loss of motor itself is reduced, and the optimization impeller and flow passage design are adopted, the impeller eccentric setting is in the wind scooper, and the air outlet of the wind scooper lower one end fixed mounting has the air -out guide cover, and the air inlet of the wind scooper front end fixed mounting has the necking cover, reduces the resistance loss in the gas flow process, improves the wind -guiding efficiency of fan, makes the gas flow more smoothly, improves energy conversion efficiency.

[0013] 2、 the utility model discloses that the integral centrifugal fan adopts lightening and reinforcing structure design, and the bottom base one end upper and lower two side walls between the establishment has the lightening groove, plays the lightening effect of integral centrifugal fan, and the wind scooper is connected between the frame, not only light in weight, and reliable, and the wind scooper rear end fixedly connected with alloy steel sheet, plays the further structure reinforcing effect of wind scooper structure, prolongs the service life of integral centrifugal fan. ACCURACY OF DRAWINGS

[0014] Figure 1 For the integral three-dimensional of the utility model Figure 1 ;

[0015] Figure 2 For the integral three-dimensional of the utility model Figure 2 ;

[0016] Figure 3The utility model discloses a fan shell mechanism perspective view.

[0017] Figure 4 The utility model discloses an active air guide mechanism perspective view.

[0018] In the drawing: 1, fan shell mechanism, 2, active air guide mechanism, 11, air guide cover, 12, necked cover, 13, air outlet guide cover, 14, fit hole, 15, frame, 16, support frame, 21, base, 22, weight reduction through -slot, 23, variable frequency motor, 24, pulley, 25, alloy steel plate, 26, connecting shaft, 27, impeller, 28, transmission belt. DETAILED DESCRIPTION

[0019] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but can not be used to limit the scope of the utility model.

[0020] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The orientation or position relation indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore can not be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it is necessary to point out that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected;Can be mechanically connected, or electrically connected;Can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] Please refer to Figures 1-4The utility model discloses an embodiment of a kind of high-performance centrifugal fan, including fan shell mechanism 1, fan shell mechanism 1 is configured with initiative air guide mechanism 2, fan shell mechanism 1 includes a air scoop 11, the air inlet of air scoop 11 front end is fixedly connected with necking cover 12, air scoop 11 lower one end outlet is fixedly installed with gas outlet guide cover 13, initiative air guide mechanism 2 includes a base 21, initiative air guide mechanism 2 further includes impeller 27 eccentrically arranged in one end upper side in air scoop 11, impeller 27 is coaxially arranged with necking cover 12, the rear end of impeller 27 is provided with driving mechanism, and driving mechanism includes variable frequency motor 23 fixedly connected to the other side of base 21 top end, overall high-efficiency driving structure design is adopted, and it selects high-efficiency variable frequency motor 23, reduces the energy loss of motor itself, and adopts optimization impeller 27 and flow passage design, and impeller 27 is eccentrically arranged in air scoop 11, and gas outlet guide cover 13 is fixedly installed at the outlet of one end lower side of air scoop 11, while necking cover 12 is fixedly installed at the air inlet of air scoop 11 front end, reduce the resistance loss in the process of gas flow, improve the air guide efficiency of fan, make gas flow more smooth, improve energy conversion efficiency.

[0023] The weight-reducing through slot 22 is formed between the upper and lower side walls of one end of the base 21, the frame 15 is fixedly connected to the top end of the base 21 and located at the opening of the weight-reducing through slot 22, the air scoop 11 is fixedly connected to the front end of the frame 15, the rear end of the inner side wall of the air scoop 11 is provided with the matching hole 14, the alloy steel plate 25 is fixedly connected to the rear end of the outer side wall of the air scoop 11, the through hole is formed between the front and rear side walls of the alloy steel plate 25 and corresponds to the matching hole 14, the bearing is fixedly installed in the matching hole 14 and the through hole, the connecting shaft 26 is rotatably sleeved with the bearing, the impeller 27 is fixedly connected to the front end of the connecting shaft 26 and coaxially arranged with the impeller 27, the overall centrifugal fan adopts the weight-reducing and reinforcing structure design, the weight-reducing through slot 22 is formed between the upper and lower side walls of one end of the base 21, which plays a role in reducing the weight of the overall centrifugal fan, the air scoop 11 and the base 21 are connected through the frame 15, which not only has a relatively light weight, but also has reliable connection, and the alloy steel plate 25 is fixedly connected to the rear end of the air scoop 11, which plays a further reinforcing role in the structure of the air scoop 11 and prolongs the service life of the overall centrifugal fan.

[0024] The pulley 24 is fixedly connected to the rear side of the driving end of the variable frequency motor 23, the pulley 24 is also fixedly connected to the rear end of the connecting shaft 26, the same transmission belt 28 is sleeved and installed outside the two pulleys 24, the lower pulley 24 can be driven to rotate by the variable frequency motor 23, and then the upper pulley 24 is driven to rotate through the transmission belt 28, the impeller 27 is driven to rotate through the connecting shaft 26, and the centrifugal air guide is realized by cooperating the air scoop 11, the necking cover 12 and the gas outlet guide cover 13.

[0025] The alloy steel plate 25 rear end is fixedly connected with a support frame 16, the support frame 16 upper and lower two sides between both ends are provided with through holes, and bolts are installed in the through holes, and the two bolts are fixedly installed on the top end of the frame 15, and the support frame 16 can support the alloy steel plate 25.

[0026] The working principle of the utility model is: frequency conversion motor 23 can drive lower pulley 24 to rotate, and then drive upper pulley 24 to rotate through transmission belt 28, drive impeller 27 to rotate through connecting shaft 26, cooperate with air scooping cover 11, neck cover 12 and air outlet guide cover 13 to realize centrifugal air scooping, the whole adopts high efficiency drive structure design, it selects high efficiency frequency conversion motor 23, reduces the energy loss of motor itself, and adopts optimized impeller 27 and flow channel design, the eccentricity of impeller 27 is arranged in air scooping cover 11, and air outlet guide cover 13 is fixedly installed at the air outlet of the lower end of air scooping cover 11, and neck cover 12 is fixedly installed at the air inlet of the front end of air scooping cover 11, reduces the resistance loss in the gas flow process, improves the air scooping efficiency of fan, makes gas flow more smoothly, improves energy conversion efficiency.

[0027] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A high-performance centrifugal fan, comprising a fan housing mechanism (1), wherein the fan housing mechanism (1) is equipped with an active air guiding mechanism (2); Its features are: The fan housing mechanism (1) includes a wind guide hood (11), a shrink mask (12) is fixedly connected to the air inlet at the front end of the wind guide hood (11), and an air outlet guide hood (13) is fixedly installed at the air outlet at the lower end of the wind guide hood (11). The active air guiding mechanism (2) includes a base (21), a weight reduction groove (22) is provided between the upper and lower side walls of one end of the base (21), a frame (15) is fixedly connected to the top of the base (21) and at the opening of the weight reduction groove (22), and an air guide cover (11) is fixedly connected to the front end of the frame (15). The active air guiding mechanism (2) also includes an impeller (27) eccentrically disposed above one end of the air guiding cover (11). The impeller (27) and the shrink mask (12) are coaxially arranged, and a drive mechanism is provided at the rear end of the impeller (27).

2. The high-performance centrifugal fan according to claim 1, characterized in that: The drive mechanism includes a variable frequency motor (23) fixedly connected to the other side of the top of the base (21), and a pulley (24) is fixedly connected to the drive end of the rear side of the variable frequency motor (23).

3. A high-performance centrifugal fan according to claim 1, characterized in that: The rear end of the inner side wall of the air guide shroud (11) is provided with a mating hole (14), and the rear end of the outer side wall of the air guide shroud (11) is fixedly connected with an alloy steel plate (25).

4. A high-performance centrifugal fan according to claim 3, characterized in that: The alloy steel plate (25) has through holes in the corresponding mating holes (14) between the front and rear side walls. Bearings are fixedly installed in the mating holes (14) and through holes, and a connecting shaft (26) is fixedly sleeved on the inner rotating end of the bearing.

5. A high-performance centrifugal fan according to claim 4, characterized in that: The front end of the connecting shaft (26) is fixedly connected to an impeller (27) and is coaxial with the impeller (27). The rear end of the connecting shaft (26) is also fixedly connected to a pulley (24). The two pulleys (24) are fitted with the same transmission belt (28).

6. A high-performance centrifugal fan according to claim 3, characterized in that: The alloy steel plate (25) is fixedly connected to a support frame (16) at its rear end.

7. A high-performance centrifugal fan according to claim 6, characterized in that: The support frame (16) has through holes between the upper and lower side walls at both ends, and bolts are installed in the through holes. The two bolts are fixedly installed on the top of the frame (15).

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