CN209180126U - Air inlet noise reducing type high pressure blower - Google Patents

Abstract

The utility model discloses a kind of air inlet noise reducing type high pressure blowers, it includes a bracket, driving motor and a high pressure blower are installed on bracket, high pressure blower includes a shell and impeller assembly, the transmission axis connection impeller assembly of driving motor, shell is equipped with air inlet and air outlet, and air inlet is equipped with intake assembly.Fixed plate is added in air inlet, extends air inlet distance, avoids external air flow from being directly entered in blower and generates huge tangential noise；Furthermore, first tip forms air inlet through hollow shaft vortex, with good air-flow guiding function, improve air inlet effect, second tip will form a radial centrifugation vortex, into the air-flow in air blower under the action of the radial centrifugation vortex that the second tip generates, by being axially converted into radial direction, the tangential noise of blade rotation is effectively reduced.

Description

Air inlet noise reducing type high pressure blower

Technical field

The utility model belongs to high pressure blower field, more particularly, to a kind of air inlet noise reducing type high pressure blower.

Background technique

With the development of machinery industry, air blower is widely used as common instrument, and air blower leans on cylinder interior biasing Rotor eccentricity operating, and change volume between the blade in rotor slot and draw air into, compress, spuing.In operation Lubrication is sent to oil dripping mouth automatically using the pressure difference of air blower, is instilled to reduce friction and noise in cylinder, while can keep Cylinder charge does not flow back, and such air blower is also known as slide sheet type air blower.The working principle of cfentrifugal blower with it is centrifugal Ventilation blower is similar, and only the compression process of air is usually to pass through several running wheels (or what) under the influence of centrifugal force It carries out.Air blower has the rotor of a high-speed rotation, and the blade on rotor drives air high-speed motion, and centrifugal force makes air exist In the casing of involute shape, along involute flow to fan outlet, the air-flow of high speed has certain wind pressure.New air is by machine The center of shell enters supplement.

The various high pressure blowers that present people use, impeller air inlet suddenly become radial from axial, and air intake resistance is big, whirlpool Stream loss is big, and air inlet effect is poor, low efficiency, not only big energy-consuming, but also is unfavorable for environmental protection.Such as 201721144073.3 disclose A kind of wind wheel and its air blower being applied to, including top panel, bottom panel and installation are connected between top panel and bottom panel Several air blades, air inlet is set among bottom panel, forms air duct between adjacent two air blade.Utility model air inlet Resistance is big, noise is big and energy consumption is more.

Utility model content

In order to solve the problems of the above-mentioned prior art, the utility model proposes a kind of air inlet noise reducing type high pressure drums Blower, which reduce air intake resistance and air inlet noises, can smoothly be converted into radial direction from axial into the air-flow in blower, mention While high air intake efficiency, noise is also reduced.

The technical solution of the utility model is achieved in that

A kind of air inlet noise reducing type high pressure blower a comprising bracket is equipped with driving motor and one on the bracket High pressure blower, the high pressure blower include a shell and impeller assembly, leaf described in the transmission axis connection of the driving motor Wheel assembly, the shell are equipped with air inlet and air outlet, which is characterized in that the air inlet is equipped with intake assembly, described Intake assembly includes blast pipe, fixed plate and the first oviduct, and first oviduct installs the fixation on the housing Plate is welded on first oviduct, and the blast pipe is fixedly installed in the fixed plate, and the blast pipe is cone barrel, The impeller assembly includes propeller boss, fixation kit and blade, and the fixation kit includes the first disk, the second disk and the second loudspeaker Pipe, first disk are welded on the propeller boss, and second disk is mounted on first disk, the blade weldering It connecing between second disk and the second oviduct, the blade includes first horizontal portion and the first lug boss, and described first Lug boss includes a bevel edge, bottom edge and the first arc side, and the angle between the bevel edge and bottom edge is α, the second oviduct packet The second horizontal part and the second lug boss are included, second lug boss includes one second curved portion, first arc side and the second arc The radian in shape portion is consistent, and the blast pipe protrudes into second oviduct.

In this air inlet noise reducing type high pressure blower of the utility model, the week of first oviduct and fixed plate There is stiffening plate to uniform welding.

In this air inlet noise reducing type high pressure blower of the utility model, the angular range of the α is 60~80 °.

In this air inlet noise reducing type high pressure blower of the utility model, the bottom of the blast pipe and described first It is flushed at the top of lug boss.

This air inlet noise reducing type high pressure blower for implementing the utility model, has the advantages that in air inlet Place adds fixed plate, extends air inlet distance, avoids external air flow from being directly entered in blower and generates huge tangential noise；This Outside, the first tip forms air inlet through hollow shaft vortex, has good air-flow guiding function, improves air inlet effect, the second tip meeting A radial centrifugation vortex is formed, into the air-flow in air blower under the action of the radial centrifugation vortex that the second tip generates, by It axially is converted into radial direction, effectively reduces the tangential noise of blade rotation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of this air inlet noise reducing type high pressure blower of the utility model；

Fig. 2 is another direction schematic diagram of Fig. 1, the main presentation structure of bracket；

Fig. 3 is the structural schematic diagram of Fig. 1 mesohigh air blower；

Fig. 4 is the A-A of Fig. 3 to diagrammatic cross-section；

Fig. 5 is the decomposition diagram of Fig. 4；

Fig. 6 is the structural schematic diagram of impeller assembly in Fig. 4；

Fig. 7 is another direction schematic diagram of Fig. 6；

Fig. 8 is blade construction schematic diagram in Fig. 6.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.

This air inlet noise reducing type high pressure blower of the utility model as shown in Figures 1 to 8 a comprising bracket 11, driving motor 12 and a high pressure blower 13 are installed, high pressure blower 13 includes a shell 131 and impeller sets on bracket 11 Part 20, the transmission shaft of driving motor 12 are connected with impeller assembly 20, and shell 131 is equipped with air inlet 132 and air outlet 133.

Air inlet 132 is equipped with intake assembly 21, and intake assembly 21 includes blast pipe 211, fixed plate 212 and the first loudspeaker Pipe 213, the first oviduct 213 are mounted on shell 131, and fixed plate 212 is welded on the first oviduct 213, the first oviduct 213 and the circumferential uniform welding of fixed plate 212 have a stiffening plate 214, reduce integrated production difficulty, structure firmly installs.It is fixed Blast pipe 211 is fixedly installed on plate 212, blast pipe 211 is cone barrel, and fixed plate 212 is added at air inlet 132, is extended Air inlet distance avoids external air flow from being directly entered in blower and generates huge tangential noise, and external air flow passes through blast pipe 211 Into in air blower, good leak tightness, the noise that cutting steam generates when air blower inner impeller rotates is transmitted to by blast pipe 211 Very little can be decayed to when extraneous.

Impeller assembly 20 includes propeller boss 201, fixation kit 23 and blade 24, and fixation kit 23 includes the first disk 231, the Two disks 232 and the second oviduct 233, the first disk 231 are welded on propeller boss 201, and the second disk 232 is mounted on the first disk On 231, blade 24 is welded between the second disk 232 and the second oviduct 233, and blade 24 includes first horizontal portion 241 and the One lug boss 242, the second oviduct 233 include that the second horizontal part 234 and the second lug boss 235, first horizontal portion 241 are mounted on Between second horizontal part 234 and the second disk 232, the first lug boss 242 is mounted on the second lug boss 235 and the second disk 232 Between.

First lug boss 242 is equipped with a bevel edge 243, bottom edge 244 and the first arc side 245, between bevel edge 243 and bottom edge Angle is α, and the angular range of α is 60~80 °.Second lug boss 235 includes one second curved portion 236, the first arc side 245 and the The radian of two curved portions 236 is consistent, and blast pipe 211 protrudes into the second oviduct 233.The bottom of blast pipe 211 and the first protrusion The top in portion 242 flushes.It is welded closely between blade 24 and the second disk 232 and the second oviduct 233, avoids generating gap, The noise as caused by gap is effectively reduced.Between the bottom of blast pipe 211 and the top of the first lug boss 242 without between The air-flow of gap, entrance can enter in impeller assembly 20 in first time, and by blade 24 quickly by being axially converted into radial direction Air-flow.

Bevel edge 243 and the first arc side 245 form the first tip 25, and for impeller when rotation, the first tip 25 forms one Air inlet through hollow shaft vortex, then persistently attracts the entrance of external air flow, has good air-flow guiding function, improves air inlet effect, Preferably, a porous circular filter screen can be arranged in blast pipe 211, blower inlet Classified Spaces can be made, be effectively reduced The sympathetic response of air blower air intake.

Bevel edge 243 and bottom edge 244 form the second tip 26, and for impeller when rotation, the second tip 26 will form a diameter It is vortexed to centrifugation, into the air-flow in air blower under the action of the radial centrifugation vortex that the second tip 26 generates, by axially turning Radial direction is turned to, the tangential noise of the rotation of blade 24 is effectively reduced.

Bracket 11 includes square frame 111 and vertical stand 112, and vertical stand 112 is mounted on the one of square frame 111 Side, vertical stand 112 are provided with reinforcing rod 113, and driving motor 12 is mounted on square frame 111, and high pressure blower 13 is pacified In vertical stand 112.Supporting structure is simple, rationally distributed, reduces the vibration between driving motor 12 and high pressure blower 13 Dynamic noise.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, made any modification, equivalent replacement and improvement etc. should be included in the utility model Protection scope within.

Claims (4)

1. a kind of air inlet noise reducing type high pressure blower comprising a bracket is equipped with driving motor and one high on the bracket Drum pressure blower, the high pressure blower include a shell and impeller assembly, impeller described in the transmission axis connection of the driving motor Component, the shell be equipped with air inlet and air outlet, which is characterized in that the air inlet be equipped with intake assembly, it is described enter Mouth component includes blast pipe, fixed plate and the first oviduct, and first oviduct is installed on the housing, the fixed plate It is welded on first oviduct, the blast pipe is fixedly installed in the fixed plate, the blast pipe is cone barrel, institute Stating impeller assembly includes propeller boss, fixation kit and blade, and the fixation kit includes the first disk, the second disk and the second loudspeaker Pipe, first disk are welded on the propeller boss, and second disk is mounted on first disk, the blade welding Between second disk and the second oviduct, the blade includes first horizontal portion and the first lug boss, and described first is convex The portion of rising includes a bevel edge, bottom edge and the first arc side, and the angle between the bevel edge and bottom edge is α, and second oviduct includes Second horizontal part and the second lug boss, second lug boss include one second curved portion, first arc side and the second arc The radian in portion is consistent, and the blast pipe protrudes into second oviduct.

2. air inlet noise reducing type high pressure blower according to claim 1, which is characterized in that first oviduct and solid The circumferential uniform welding of fixed board has stiffening plate.

3. air inlet noise reducing type high pressure blower according to claim 1, which is characterized in that the angular range of the α is 60~80 °.

4. air inlet noise reducing type high pressure blower according to claim 1, which is characterized in that the bottom of the blast pipe with It is flushed at the top of first lug boss.