CN112855576A - High-speed high-pressure small centrifugal fan - Google Patents

High-speed high-pressure small centrifugal fan Download PDF

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Publication number
CN112855576A
CN112855576A CN202110278858.4A CN202110278858A CN112855576A CN 112855576 A CN112855576 A CN 112855576A CN 202110278858 A CN202110278858 A CN 202110278858A CN 112855576 A CN112855576 A CN 112855576A
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CN
China
Prior art keywords
variable frequency
fixing plate
frequency motor
motor
speed
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Pending
Application number
CN202110278858.4A
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Chinese (zh)
Inventor
李朝阳
马清云
屠牡丹
孙鑫磊
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Shanghai General Fan Co Ltd
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Shanghai General Fan Co Ltd
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Publication date
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Priority to CN202110278858.4A priority Critical patent/CN112855576A/en
Publication of CN112855576A publication Critical patent/CN112855576A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to the technical field of centrifugal fans, and particularly discloses a high-speed high-pressure small centrifugal fan which comprises a variable frequency motor; the variable frequency motor is arranged on the mounting base, a motor cover plate is arranged on one side of the variable frequency motor, one side of the motor cover plate is connected with a fan shell, an impeller part is arranged on one side, away from the variable frequency motor, of the fan shell, the impeller part is arranged in the fan shell, impeller blades are arranged in the impeller part, and the impeller blades are connected with a main shaft of the variable frequency motor; and one side of the impeller part, which is far away from the fan shell, is connected with a wind collector. The invention drives the motor through the frequency converter, improves the rotating speed of the fan, thereby obtaining larger gas volume flow and gas pressure, can randomly adjust the air quantity and the air pressure according to the application process requirement or the matching engineering requirement, can keep the required pressure and flow according to the process requirement, has simple installation structure and better stability and buffering performance, and can effectively reduce the working noise.

Description

High-speed high-pressure small centrifugal fan
Technical Field
The invention relates to the technical field of centrifugal fans, in particular to a high-speed high-pressure small centrifugal fan.
Background
With the emphasis of the country on environmental protection, the requirements on forced ventilation system occasions in industrial production or environments with more emissions such as burners of heating furnaces and the like are more and more strict, and ventilator equipment in the equipment is indispensable, but the traditional centrifugal fan has larger structural size and higher requirements on installation form and position, and the requirements on fan flow and pressure in use occasions are higher and higher. Therefore, a high-speed high-pressure small centrifugal fan with compact structure, convenient installation, low noise and high rotating speed is urgently needed, the air volume and the air pressure can be adjusted randomly according to the application process requirements or the supporting engineering requirements, and the required pressure and flow can be kept according to the process requirements.
Disclosure of Invention
The invention aims to provide a high-speed high-pressure small centrifugal fan to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-speed high-pressure small centrifugal fan comprises a variable frequency motor; the variable frequency motor is arranged on the mounting base, a motor cover plate is arranged on one side of the variable frequency motor, one side of the motor cover plate is connected with a fan shell, an impeller part is arranged on one side, away from the variable frequency motor, of the fan shell, the impeller part is arranged in the fan shell, impeller blades are arranged in the impeller part, and the impeller blades are connected with a main shaft of the variable frequency motor (the impeller part consists of a wheel cover, a wheel disc, blades and a shaft disc, and the connection mode is that the main shaft of the motor extends into the shaft disc of the impeller part); one side of the impeller part, which is far away from the fan shell, is connected with a wind collector; a protective shell is sleeved outside the variable frequency motor, a limiting cover is arranged on the inner wall of the rear side of the protective shell, and the upper part of the rear end of the variable frequency motor is clamped in the limiting cover;
the mounting base is provided with a mounting groove, and the variable frequency motor is mounted inside the mounting groove; the top end and the bottom end of the protective shell are respectively provided with an upper fixing plate and a lower fixing plate, and the two fixing plates are respectively clamped with the top end and the bottom end of the variable frequency motor; the inboard of upper portion fixed plate and lower part fixed plate all is provided with the auxiliary fixed plate that is used for butt inverter motor, is connected with a plurality of damping spring between auxiliary fixed plate and upper portion fixed plate, the lower part fixed plate.
Preferably, the lateral sides around the bottom end of the protective shell are respectively provided with a horizontal mounting seat extending outwards, and the horizontal mounting seats are fixed on the mounting base through screws.
Preferably, the convex surfaces of the upper fixing plate and the lower fixing plate are fixedly connected with a positioning mounting plate of an integrated structure, and the left side and the right side of the positioning mounting plate are fixed on the protective shell and the mounting groove through screws.
Preferably, a plurality of reinforcing inclined rods are connected between the outer side wall of the upper fixing plate and the inner wall of the protective shell in an annular array manner, and one ends, far away from the upper fixing plate, of the reinforcing inclined rods are fixed on the protective shell through screws.
Preferably, the outer side walls of the left side and the right side of the lower fixing plate are fixedly provided with fixing blocks, and the lower surfaces of the fixing blocks are fixedly connected with the positioning mounting plate.
Preferably, the cross sections of the upper fixing plate, the lower fixing plate and the auxiliary fixing plate are all arc-shaped structures.
Preferably, the left and right sides of inverter motor bottom all is provided with the fixed extension board that leans out, and the bottom fixedly connected with of fixed extension board has the fixed bearing of integral type structure, and fixed bearing passes through the inside of fix with screw at the mounting groove.
Preferably, an inclined supporting block is connected between the fixed supporting plate and the fixed support, and the top end of the inclined supporting block is clamped at the bottom of the variable frequency motor.
Preferably, a plurality of strip-shaped heat dissipation windows are arranged on the left side and the right side of the protection shell, dustproof filter screens are arranged on the heat dissipation windows, and protection covers inclining downwards are arranged on the outer wall of the protection shell above the heat dissipation windows.
Preferably, the fan shell and the air collector are made of aluminum materials, and are light in weight, high in strength, small in deformation, corrosion-resistant and low in noise.
Preferably, the variable frequency fan is an A-type variable frequency motor and is directly connected with transmission, so that the variable frequency fan is compact in structure, small in size, simple to install, high in efficiency and reasonable in performance distribution.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the motor is driven by the frequency converter, so that the rotating speed of the fan is increased, and thus, larger gas volume flow and gas pressure are obtained, and the rotating speed of the fan can reach 6250 r/min; the air quantity and the air pressure can be adjusted at will according to the application process requirements or the supporting engineering requirements, and the required pressure and flow can be kept according to the process requirements.
2. The variable frequency motor provided by the invention has the advantages of simple mounting structure, good stability and buffering performance, and capability of effectively reducing the working noise; the blower shell and the air collector are made of aluminum materials, and have the advantages of light weight, high strength, small deformation, corrosion resistance and low noise; the fan is A-type variable frequency motor direct-connected transmission, and has the advantages of compact structure, small volume, simple installation, high efficiency and reasonable performance distribution.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a partial structural schematic diagram of embodiment 2 of the present invention.
In the figure: 1. a variable frequency motor; 2. installing a base; 3. a motor cover plate; 4. a fan housing; 5. an impeller portion; 6. an impeller blade; 7. an air collector; 8. a protective housing; 9. mounting grooves; 10. an upper fixing plate; 11. a lower fixing plate; 12. an auxiliary fixing plate; 13. a damping spring; 14. a horizontal mounting base; 15. positioning the mounting plate; 16. a reinforcing diagonal rod; 17. a fixed block; 18. fixing a support plate; 19. a fixed support; 20. inclining the support block; 21. a heat dissipation window; 22. a protective cover; 23. and a limiting cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Any one embodiment of the present invention is described below in conjunction with figures 1-3 for further illustration:
example 1: the invention provides a technical scheme that: a high-speed high-pressure small centrifugal fan comprises a variable frequency motor 1; the variable frequency motor 1 is arranged on the mounting base 2, a motor cover plate 3 is arranged on one side of the variable frequency motor 1, one side of the motor cover plate 3 is connected with a fan shell 4, an impeller part 5 is arranged on one side, far away from the variable frequency motor 1, of the fan shell 4, the impeller part 5 is arranged inside the fan shell 4, impeller blades 6 are arranged inside the impeller part 5, and the impeller blades 6 are connected with a main shaft of the variable frequency motor 1 (the impeller part 5 consists of an impeller cover, an impeller disc, blades and a shaft disc in a connection mode that the main shaft of the motor extends into the shaft disc of the impeller part); the side of the impeller part 5 far away from the fan shell 4 is connected with a wind collector 7.
In this embodiment: according to the invention, the motor is driven by the frequency converter, so that the rotating speed of the fan is increased, and thus, larger gas volume flow and gas pressure are obtained, and the rotating speed of the fan can reach 6250 r/min; the air quantity and the air pressure can be adjusted at will according to the application process requirements or the supporting engineering requirements, and the required pressure and flow can be kept according to the process requirements; the fan shell 4 and the air collector 7 are made of aluminum materials, and have the advantages of light weight, high strength, small deformation, corrosion resistance and low noise; the fan is the direct-connected transmission of A formula inverter motor 1, compact structure, and is small, and the installation is simple, and is efficient, and the performance distribution is reasonable.
Example 2: a protective shell 8 is sleeved outside the variable frequency motor 1, a limiting cover 23 is arranged on the inner wall of the rear side of the protective shell 8, and the upper part of the rear end of the variable frequency motor 1 is clamped in the limiting cover 23; : the mounting base 2 is provided with a mounting groove 9, and the variable frequency motor 1 is mounted inside the mounting groove 9; the top end and the bottom end of the protective shell 8 are respectively provided with an upper fixing plate 10 and a lower fixing plate 11, and the two fixing plates are respectively clamped with the top end and the bottom end of the variable frequency motor 1; the inner sides of the upper fixing plate 10 and the lower fixing plate 11 are both provided with an auxiliary fixing plate 12 for abutting against the variable frequency motor 1, and a plurality of damping springs 13 are connected between the auxiliary fixing plate 12 and the upper fixing plate 10 and the lower fixing plate 11.
Furthermore, the peripheral sides of the bottom end of the protective shell 8 are respectively provided with a horizontal mounting seat 14 extending outwards, and the horizontal mounting seats 14 are fixed on the mounting base 2 through screws.
Further, the convex surfaces of the upper fixing plate 10 and the lower fixing plate 11 are fixedly connected with a positioning mounting plate 15 of an integrated structure, and the left side and the right side of the positioning mounting plate 15 are fixed on the protective shell 8 and the mounting groove 9 through screws.
Furthermore, a plurality of reinforcing diagonal rods 16 are connected between the outer side wall of the upper fixing plate 10 and the inner wall of the protective shell 8 in an annular array manner, and one ends of the reinforcing diagonal rods 16, which are far away from the upper fixing plate 10, are fixed on the protective shell 8 through screws.
Further, the outer side walls of the left side and the right side of the lower fixing plate 11 are fixedly provided with fixing blocks 17, and the lower surfaces of the fixing blocks 17 are fixedly connected with the positioning mounting plate 15.
Further, the cross sections of the upper fixing plate 10, the lower fixing plate 11 and the auxiliary fixing plate 12 are all arc-shaped structures.
Further, the left and right sides of inverter motor 1 bottom all is provided with the fixed extension board 18 that leans out, and the bottom fixedly connected with of fixed extension board 18 has the fixed support 19 of integral type structure, and fixed support 19 passes through the inside of fix with screw at mounting groove 9.
Furthermore, an inclined support block 20 is connected between the fixed support plate 18 and the fixed support 19, and the top end of the inclined support block 20 is clamped at the bottom of the variable frequency motor 1.
Further, a plurality of heat dissipation windows 21 in a strip structure are arranged on the left side and the right side of the protection shell 8, a dustproof filter screen is mounted on each heat dissipation window 21, and a protection cover 22 which inclines downwards is arranged on the outer wall of the protection shell 8 above each heat dissipation window 21.
In this embodiment: when the variable frequency motor 1 is installed, the variable frequency motor 1 is placed in the installation groove 9 on the installation base 2, so that the bottom of the installation base 2 is clamped on the lower fixing plate 11 in the installation groove 9, and then the fixing supports 19 on the left side and the right side of the variable frequency motor 1 are fixed on the installation groove 9 through screws; and then the protective shell 8 is nested on the variable frequency motor 1, so that an upper fixing plate 10 inside the protective shell 8 is nested on the top end of the variable frequency motor 1, and then the horizontal mounting seats 14 at the peripheral side edges of the bottom of the protective shell 8 are fixed on the mounting base 2 outside the mounting groove 9 by using screws.
In the working process of the variable frequency motor 1, the heat emitted by the internal components can be discharged through the heat radiation windows 21 on the left and right sides of the protective shell 8; when the variable frequency motor shakes, the auxiliary fixing plates 12 at the upper end and the lower end of the variable frequency motor effectively absorb shock through matching with the shock absorption springs 13, and the reinforcing inclined rods 16 arranged on the outer side wall of the upper fixing plate 10 and the limiting cover 23 arranged on the rear side of the protective shell 8 effectively improve the stability of the variable frequency motor 1; the upper fixing plate 10 and the lower fixing plate 11 are both installed on the protective shell 8 and the installation groove 9 through the positioning installation plate 15, and are easy and convenient to disassemble and assemble and convenient to maintain and replace.
It is worth noting that: the whole device realizes control over the device through the controller, and because the equipment matched with the controller is common equipment, the device belongs to the existing mature technology, and the electrical connection relation and the specific circuit structure are not repeated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1.一种高速高压小型离心风机，其特征在于：包括变频电机(1)；所述变频电机(1)安装在安装底座(2)上，变频电机(1)的一侧安装有电机盖板(3)，电机盖板(3)的一侧连接有风机机壳(4)，风机机壳(4)远离变频电机(1)的一侧安装有叶轮部(5)，叶轮部(5)安装在风机机壳(4)的内部，且叶轮部(5)的内部安装有叶轮叶片(6)，叶轮叶片(6)与变频电机(1)的主轴连接；所述叶轮部(5)远离风机机壳(4)的一侧连接有集风器(7)；所述变频电机(1)的外部套设有防护壳体(8)，防护壳体(8)的后侧内壁上设置有限位罩(23)，变频电机(1)的后端上部卡接在限位罩(23)内；1. A high-speed and high-pressure small centrifugal fan is characterized in that: comprising a frequency conversion motor (1); the frequency conversion motor (1) is installed on a mounting base (2), and a motor cover is installed on one side of the frequency conversion motor (1). (3), a fan casing (4) is connected to one side of the motor cover (3), and an impeller part (5) is installed on the side of the fan casing (4) away from the variable frequency motor (1), and the impeller part (5) It is installed inside the fan casing (4), and impeller blades (6) are installed inside the impeller part (5), and the impeller blades (6) are connected with the main shaft of the variable frequency motor (1); the impeller part (5) is far away from A wind collector (7) is connected to one side of the fan casing (4); a protective casing (8) is sleeved on the outside of the variable frequency motor (1), and a rear inner wall of the protective casing (8) is provided with a limited a position cover (23), the upper rear end of the variable frequency motor (1) is clamped in the limit cover (23); 所述安装底座(2)上开设有安装槽(9)，变频电机(1)安装在安装槽(9)的内部；所述防护壳体(8)的顶端和底端分别设置有上部固定板(10)和下部固定板(11)，两个固定板分别卡接变频电机(1)的顶端和底端；所述上部固定板(10)和下部固定板(11)的内侧均设置有用于抵接变频电机(1)的辅助固定板(12)，辅助固定板(12)与上部固定板(10)、下部固定板(11)之间连接有多个减震弹簧(13)。The mounting base (2) is provided with a mounting groove (9), and the variable frequency motor (1) is mounted in the interior of the mounting groove (9); the top and bottom ends of the protective casing (8) are respectively provided with an upper fixing plate (10) and a lower fixing plate (11), the two fixing plates are respectively clamped to the top and bottom ends of the variable frequency motor (1); Abutting against the auxiliary fixing plate (12) of the variable frequency motor (1), a plurality of damping springs (13) are connected between the auxiliary fixing plate (12), the upper fixing plate (10) and the lower fixing plate (11). 2.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述防护壳体(8)底端的四周边侧处均安装有向外延伸的水平安装座(14)，水平安装座(14)通过螺钉固定在安装底座(2)上。2. A high-speed, high-pressure small centrifugal fan according to claim 1, characterized in that: the four peripheral sides of the bottom end of the protective casing (8) are installed with outwardly extending horizontal mounting seats (14), and the horizontal The mounting seat (14) is fixed on the mounting base (2) by screws. 3.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述上部固定板(10)和下部固定板(11)的凸面均固定连接有一体式结构的定位安装板(15)，定位安装板(15)的左右两侧通过螺钉固定在防护壳体(8)、安装槽(9)上。3. A kind of high-speed and high-pressure small centrifugal fan according to claim 1, characterized in that: the convex surfaces of the upper fixing plate (10) and the lower fixing plate (11) are fixedly connected with a positioning and mounting plate ( 15), the left and right sides of the positioning mounting plate (15) are fixed on the protective casing (8) and the mounting groove (9) by screws. 4.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述上部固定板(10)的外侧壁与防护壳体(8)的内壁之间环形阵列连接有多个加强斜杆(16)，加强斜杆(16)远离上部固定板(10)的一端通过螺钉固定在防护壳体(8)上。4. A high-speed, high-pressure small centrifugal fan according to claim 1, wherein a plurality of reinforcements are connected in an annular array between the outer side wall of the upper fixing plate (10) and the inner wall of the protective casing (8). The inclined rod (16), the end of the reinforcing inclined rod (16) away from the upper fixing plate (10) is fixed on the protective casing (8) by screws. 5.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述下部固定板(11)左右两侧的外侧壁上固定设置有固定块(17)，固定块(17)的下表面与定位安装板(15)固定连接。5. A high-speed, high-pressure small centrifugal fan according to claim 1, characterized in that: a fixing block (17) is fixedly arranged on the outer side walls of the left and right sides of the lower fixing plate (11), and the fixing block (17) Its lower surface is fixedly connected with the positioning mounting plate (15). 6.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述上部固定板(10)、下部固定板(11)和辅助固定板(12)的截面均为弧形结构。6. A high-speed, high-pressure small centrifugal fan according to claim 1, characterized in that: the cross-sections of the upper fixing plate (10), the lower fixing plate (11) and the auxiliary fixing plate (12) are all arc-shaped structures . 7.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述变频电机(1)底部的左右两侧均设置有向外倾斜的固定支板(18)，固定支板(18)的底端固定连接有一体式结构的固定支座(19)，固定支座(19)通过螺钉固定在安装槽(9)的内部。7. A high-speed, high-pressure small centrifugal fan according to claim 1, wherein the left and right sides of the bottom of the variable frequency motor (1) are provided with outwardly inclined fixed support plates (18), and the fixed support plates The bottom end of (18) is fixedly connected with a fixed support (19) of an integrated structure, and the fixed support (19) is fixed inside the installation groove (9) by screws. 8.根据权利要求7所述的一种高速高压小型离心风机，其特征在于：所述固定支板(18)和固定支座(19)之间连接有倾斜支块(20)，倾斜支块(20)的顶端卡接在变频电机(1)的底部。8. A high-speed, high-pressure small centrifugal fan according to claim 7, characterized in that: an inclined support block (20) is connected between the fixed support plate (18) and the fixed support (19), and the inclined support block The top of (20) is clamped to the bottom of the variable frequency motor (1). 9.根据权利要求1所述的一种高速高压小型离心风机，其特征在于：所述防护壳体(8)的左右两侧均开设有多个条状结构的散热窗口(21)，散热窗口(21)上安装有防尘滤网，散热窗口(21)上方的防护壳体(8)外壁上设置有向下倾斜的防护罩(22)。9. A high-speed, high-pressure small centrifugal fan according to claim 1, characterized in that: the left and right sides of the protective casing (8) are provided with a plurality of heat dissipation windows (21) with strip structures, and the heat dissipation windows A dust filter is installed on the (21), and a downwardly inclined protective cover (22) is provided on the outer wall of the protective casing (8) above the heat dissipation window (21).
CN202110278858.4A 2021-03-16 2021-03-16 High-speed high-pressure small centrifugal fan Pending CN112855576A (en)

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