阅读说明：本技术 一种高效离心通风机 (High-efficient centrifugal fan ) 是由 周鹏 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种高效离心通风机,包括电机和具有进风口组和叶轮组的蜗壳；电机轴上的电机皮带轮装有三角皮带将动力传递至轴承中；叶轮组内通过叶片安装件装有叶片,叶片安装件套在装有轴承座皮带轮的轴承上；叶片以环形阵列的形势围绕在轴承外。本发明提供一个高效离心通风机,其蜗壳采用近似阿基米德螺旋线设计,具有体积小、紧凑、美观耐用。同时进风口采用收敛式与圆弧式相结合设计,与传统的进风口设计更为简洁美观,间隙配合更合理。其叶轮相比传统的叶轮性能较高、转速比更低、噪声低、更节能。最终整体达到风量大,压力高,噪音小,电能损耗小的优点。(The invention discloses a high-efficiency centrifugal ventilator, which comprises a motor and a volute with an air inlet group and an impeller group; a motor belt pulley on a motor shaft is provided with a V-belt to transmit power to the bearing; blades are arranged in the impeller set through blade mounting pieces, and the blade mounting pieces are sleeved on a bearing provided with a bearing seat belt pulley; the blades surround the bearing in an annular array. The invention provides a high-efficiency centrifugal ventilator, wherein the volute is designed by adopting an approximate Archimedes spiral line, and the high-efficiency centrifugal ventilator has small volume, compactness, attractive appearance and durability. Meanwhile, the air inlet is designed by combining a convergent type air inlet and an arc type air inlet, so that the air inlet is more concise and attractive with the traditional air inlet design, and the clearance fit is more reasonable. Compared with the traditional impeller, the impeller has higher performance, lower rotating speed ratio, low noise and more energy conservation. Finally, the whole air volume is large, the pressure is high, the noise is low, and the electric energy loss is low.)

1. A high efficiency centrifugal ventilator characterized by comprising:

the motor belt pulley on the motor shaft of the motor is provided with a triangle belt to transmit power to the bearing;

a volute having an air inlet set and an impeller set; blades are arranged in the impeller set through blade mounting pieces, and the blade mounting pieces are sleeved on a bearing provided with a bearing seat belt pulley; the blades surround the bearing in an annular array; each blade is 33 degrees apart; the angle between the straight line of the front end of the blade pointing to the bearing and the straight line where the blade is located is 109 degrees; the front end of the air inlet group is gradually reduced to the rear end; the rear end of the air inlet group is fixedly connected with and coaxial with the front end of the impeller group.

2. A high efficiency centrifugal ventilator as recited in claim 1, wherein: a plurality of triangular grooves are arranged at the radial edges of the motor belt pulley and the bearing seat belt pulley; and a V-belt for transmitting power is correspondingly arranged on each groove.

3. A high efficiency centrifugal ventilator as recited in claim 1, wherein: the air inlet set, the impeller set and the bearing are coaxial.

4. A high efficiency centrifugal ventilator as recited in claim 1, wherein: the motor is fixedly arranged on the base through a support.

5. A high efficiency centrifugal ventilator as claimed in any one of claims 1 to 4 in which: the bearing seat is internally provided with a bearing, and two ends of the bearing respectively penetrate out of two axial ends of the bearing seat.

Technical Field

The invention relates to the technical field of fan air supply, in particular to a high-efficiency centrifugal fan.

Background

The high-speed centrifugal fan is widely applied to various industries in the industrial field of China, and is more used in the industries of metallurgy, electric power, petrifaction, mine and the like. The safe and efficient use of the high-speed centrifugal fan is not only directly related to the technical innovation and the upgrading of products, but also related to the environmental protection.

The vast majority of large centrifugal fans used in the industry of China are domestic equipment. In the actual use process, the air volume, the air pressure, the noise, the electric energy consumption and the like of the construction unit have further optimized space due to the imperfect consideration of designers, the reasons of various equipment manufacturers in the aspects of processing equipment and manufacturing technology, the defects of the construction unit in the aspect of field installation precision and the like.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an efficient centrifugal ventilator.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a high efficiency centrifugal ventilator comprising:

the motor belt pulley on the motor shaft of the motor is provided with a triangle belt to transmit power to the bearing;

a volute having an air inlet set and an impeller set; blades are arranged in the impeller set through blade mounting pieces, and the blade mounting pieces are sleeved on a bearing provided with a bearing seat belt pulley; the blades surround the bearing in an annular array; each blade is 33 degrees apart; the angle between the straight line of the front end of the blade pointing to the bearing and the straight line where the blade is located is 109 degrees; the front end of the air inlet group is gradually reduced to the rear end; the rear end of the air inlet group is fixedly connected with and coaxial with the front end of the impeller group.

Preferably, a plurality of triangular grooves are arranged at the radial edges of the motor belt pulley and the bearing seat belt pulley; and a V-belt for transmitting power is correspondingly arranged on each groove.

Preferably, the air inlet set, the impeller set and the bearing are coaxial.

Preferably, the motor is fixedly mounted on the base through a bracket.

Further preferably, the bearing support is further included, a bearing is installed in the bearing support, and two ends of the bearing respectively penetrate out of two axial ends of the bearing support.

The invention provides a high-efficiency centrifugal ventilator, wherein the volute is designed by adopting an approximate Archimedes spiral line, and the high-efficiency centrifugal ventilator has small volume, compactness, attractive appearance and durability. Meanwhile, the air inlet is designed by combining a convergent type air inlet and an arc type air inlet, so that the air inlet is more concise and attractive with the traditional air inlet design, and the clearance fit is more reasonable. Compared with the traditional impeller, the impeller has higher performance, lower rotating speed ratio, low noise and more energy conservation. Finally, the whole air volume is large, the pressure is high, the noise is low, and the electric energy loss is low.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a right side view of the present invention;

FIG. 4 is a front view of the outlet of the present invention;

FIG. 5 is a front view of the impeller assembly of the present invention;

FIG. 6 is a right side view of the impeller assembly of the present invention;

FIG. 7 is a front view of the intake stack of the present invention;

FIG. 8 is a right side view of the air intake stack of the present invention;

in the figure: an air inlet group 1; an impeller set 2; a bearing seat 3; a bearing block pulley 4; a motor pulley 5; a V-belt 6; a motor 7; an air outlet 8; a base 9; an air inlet ring 11; reinforcing ribs 12; a tail end 13; an air inlet 14; a bearing 21; a blade 22; a front edge 23; an outer edge 24; a blade mount 25; a volute 81.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, this is for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore the terms describing the positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

In the present invention, unless otherwise specified or limited, it should be noted that terms such as "mounted," "connected," and the like are used in a broad sense, and for example, they may be mechanically connected, electrically connected, or pneumatically connected, or they may be connected inside two elements, directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meaning of the terms according to specific situations.

As shown in fig. 1-3, which are front, rear, and right side views of the present invention as a whole; the invention can be divided into a fan part and a power part; both parts are mounted on the same base 9 and transmit power through the V-belt 6.

Wherein the power part is a motor 7, and the motor 7 is fixedly arranged on a base 9 through a bracket. A motor shaft of the motor 7 is sleeved with a motor belt pulley 5, a plurality of triangular grooves are arranged at the radial edge of the motor belt pulley 5, and each groove is correspondingly provided with a triangular belt 6; the other end of the V-belt 6 is sleeved on the bearing seat belt pulley 4. The motor 7 used in the present embodiment is YE2-200L-4, 30 KW.

The fan part comprises an air inlet set 1, an impeller set 2, a volute 81 and a bearing seat 3. Wherein the bearing support 3 is fixed on the upper table-top end of the base 9, as shown in fig. 1 and 3. A bearing 21 is arranged in the bearing seat 3, two ends of the bearing 21 respectively penetrate out of two axial ends of the bearing seat 3, a bearing seat belt pulley 4 is arranged at one end of the bearing seat belt pulley, a plurality of triangular grooves are arranged at the radial edge of the bearing seat belt pulley 4, and a triangular belt 6 is correspondingly arranged on each groove; the other end is passed to the inside of the volute casing 81 and fitted in the vane mount 25.

The volute 81 comprises an air inlet group 1 and an impeller group 2, the wind direction of the invention is shown in figures 1-3, and the external shape of the volute 81 is similar to the outline of an Archimedes spiral (not a logarithmic spiral). The air outlet 8 is located at the uppermost end. The wind enters from the air inlet group 1 positioned on the side surface of the volute casing 81, passes through the impeller group 2 positioned behind the air inlet group 1 and is sent out from the air outlet 8.

The structure of the air outlet 8 is shown in fig. 4, and is a rectangular outlet surrounded by four strips with screws (rivets).

The concrete structure of the air inlet group 1 is shown in figures 7 and 8,

the front end of the air inlet group 1 is an annular air inlet ring 11 with a screw (rivet), the inner side of the air inlet ring 11 gradually extends inwards and backwards to form a convergent circular truncated cone, the diameter of the tail end 13 of the air inlet ring is smaller than that of the air inlet ring 11, and a plurality of reinforcing ribs 12 are arranged on the periphery between the air inlet ring 11 and the tail end 13 and used for fixing the air inlet group 1 in the volute 81.

The impeller set 2 is arranged behind the air inlet set 1, and the structure of the impeller set 2 is shown in fig. 5 and 6.

The diameter of the inlet 23 of the impeller assembly 2 is smaller than the diameter of the outer edge 24 of the rear end of the impeller assembly and slightly larger than the diameter of the tail end 13 of the air inlet assembly 1, so that the air inlet assembly 1 and the impeller assembly 2 can be tightly combined together.

The part of the bearing 21 extending into the impeller group 2 is provided with a blade mounting piece 25, and the blade mounting piece 25 is provided with blades 22 in an annular array at equal intervals on the periphery to divide the impeller group 2 into an air duct. In the impeller assembly 2 there are a total of 11 blades 22, each blade 22 being equidistant by 33. And the angle between the line in which the front end of each blade 22 is directed toward the bearing 21 and the line in which the blade 22 is located is 109 °.

The bearing 21, the air inlet set 1 and the impeller set 2 are coaxial.

In this embodiment, the outer edge of the outlet 8 is 630X680mm, and the inner edge is 550X600mm, that is, the width of the strip around the outlet 8 is 40 mm.

In this embodiment, the outer diameter of the air inlet ring 11 is 900mm, the inner diameter is 800mm, and the width of the air inlet ring 11 is 100 mm. The inner diameter of the tail end of the air inlet group 1 is 512 mm.

In this particular embodiment, the inlet 23 of the impeller assembly 2 has an outer diameter of 532mm and an inner diameter of 526 mm. The thickness of the blade 22 is 6mm, the distance between the front end of the blade 22 and the axis of the bearing 21 is 421.48mm, and the distance between the tail end of the blade 22 and the axis of the bearing 21 is 800 mm.

Compared with the traditional centrifugal fan, the impeller type centrifugal fan has the advantages that the performance is improved by about 20 percent, the rotating speed ratio is lower, and the noise is reduced by 2-3 decibels.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.