CN113606169A - High-pressure fan - Google Patents
High-pressure fan Download PDFInfo
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- CN113606169A CN113606169A CN202110894268.4A CN202110894268A CN113606169A CN 113606169 A CN113606169 A CN 113606169A CN 202110894268 A CN202110894268 A CN 202110894268A CN 113606169 A CN113606169 A CN 113606169A
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- Prior art keywords
- air guide
- shaped section
- arc
- impeller
- impeller body
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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
- 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
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
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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
- 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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- 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
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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
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
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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
- 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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- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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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
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to a high-pressure fan, which comprises an impeller, a rotating shaft, a one-way clutch and a hydraulic motor, wherein the impeller comprises an impeller body, a shaft hole, a first air guide blade and a second air guide blade, the shaft hole and the impeller body are coaxially arranged, the first air guide blade and the second air guide blade are arranged on the surfaces of the two sides of the impeller body, the number of the first air guide blade and the number of the second air guide blade are the same, the inclination directions of the first air guide blade and the second air guide blade are consistent, the second air guide blade is arranged in the middle of the surface of the other side of the impeller body of two adjacent first air guide blades, and the first air guide blade is arranged in the middle of the two second air guide blades on the other side of the impeller body; the first air guide blade is a curved plate, and the second air guide blade is a curved plate. The blades on the high-pressure fan impeller are reasonable in structural design, large in air volume and capable of achieving the effects of shock absorption and noise reduction.
Description
Technical Field
The invention belongs to the technical field of cotton picker fans, and particularly relates to a high-pressure fan.
Background
With the development of agricultural machinery, agricultural production also tends to be mechanized step by step, and the manual cotton picking is time-consuming and labor-consuming and does not meet the requirements of mechanized production. The cotton picker has high requirements on air inlet amount, air speed and air pressure in the cotton conveying process, if the air inlet amount is insufficient, the air speed and the air pressure are affected, cotton conveying is not clean, cotton blocking is caused, other serious accidents are even caused, and the cotton conveying and the service life of the cotton picker are affected.
The large influence on the air inlet volume of the fan is that the arrangement and the layout of blades on the impeller are unreasonable, so that the air volume generated by the impeller is small and the use requirement cannot be met; when the cotton picker fan is used, the noise is large, the vibration amplitude is large, and when the cotton picker fan is used for a long time, the cotton picker fan can cause work-related diseases, so that personal safety hazards exist.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects, the invention provides the high-pressure fan, the blades on the impeller are reasonable in structural design, the generated air quantity is large, and the high-pressure fan also has the effects of shock absorption and noise reduction.
The technical scheme adopted by the invention for solving the technical problems is as follows: the high-pressure fan comprises an impeller, a rotating shaft, a one-way clutch and a hydraulic motor, wherein the rotating shaft penetrates through the center of the impeller and is coaxially arranged with the impeller;
the impeller comprises an impeller body, a shaft hole, first air guide blades and second air guide blades, wherein the shaft hole and the impeller body are coaxially arranged, the first air guide blades are arranged on one side surface of the impeller body, the second air guide blades are arranged on the other side surface of the impeller body, the number of the first air guide blades is the same as that of the second air guide blades, the inclination directions of the first air guide blades and the second air guide blades are consistent, the second air guide blades are arranged in the middle of the other side surface of the impeller body of every two adjacent first air guide blades, and the first air guide blades are arranged in the middle of the two second air guide blades on the other side edge of the impeller body;
the first air guide blades are curved plates, one end part of one side of each first air guide blade is flush with the outer end of the impeller body, and the inner ends of the first air guide blades are flush with each other; the second air guide blades are curved plates, one end part of one side of each second air guide blade is flush with the outer end of the impeller body, and the inner ends of the second air guide blades are flush with each other; the inner ends of the first air guide blade and the second air guide blade are on the same circular surface.
The high-pressure fan has the advantages that the wind guide blades on the impeller are reasonably designed and distributed, and the first wind guide blades and the second wind guide blades which are arranged on the impeller body in a staggered mode can fully realize large-air-volume conveying, so that the generated air volume is large; the air guide blades are reasonable in layout, good in damping and noise reduction effects in the working process, low in noise and stable in fan conveying; on the other hand, the impeller is small in size, so that the size of the high-pressure fan is further reduced, and the space required by installation of the high-pressure fan is reduced.
Furthermore, the first air guide blade is arranged at one end of the outermost side of the impeller body, and the included angle between one end of the first air guide blade closest to the circle center and the connecting line of the circle centers of the shaft holes is 34-40 degrees; the first air guide blade comprises a first outer arc-shaped section and a first inner arc-shaped section, the arc length of the first outer arc-shaped section is 60% -85% of the total arc length of the first air guide blade, and the included angle between the connecting line of the two end points of the first outer arc-shaped section and the circle center of the shaft hole is 17-24 degrees; the arc length of the first inner arc-shaped section is 15% -40% of the total arc length of the first air guide blade, and the included angle between the two end points of the first inner arc-shaped section and the connecting line of the circle centers of the shaft holes is 12-20 degrees; the opening directions of the first outer arc-shaped section and the first inner arc-shaped section are opposite, the opening direction of the first outer arc-shaped section faces the outside of the impeller body, the opening of the first inner arc-shaped section faces the inside of the impeller body, the horizontal heights of the first outer arc-shaped section are the same, and the heights of the first inner arc-shaped section decrease from outside to inside;
the second air guide blade is arranged at one end of the outermost side of the impeller body, and the included angle between one end of the second air guide blade, which is closest to the circle center, and the connecting line of the circle center of the shaft hole is 34-40 degrees; the second air guide blade comprises a second outer arc-shaped section and a second inner arc-shaped section, the arc length of the second outer arc-shaped section is 60% -85% of the total arc length of the second air guide blade, and the included angle between the connecting line of the two end points of the second outer arc-shaped section and the circle center of the shaft hole is 17-24 degrees; the arc length of the second inner arc-shaped section is 15-40% of the total arc length of the second air guide blade, and the included angle between the two end points of the second inner arc-shaped section and the connecting line of the circle centers of the shaft holes is 12-20 degrees; the opening directions of the second outer arc-shaped section and the second inner arc-shaped section are opposite, the opening direction of the second outer arc-shaped section faces the outside of the impeller body, the opening direction of the second inner arc-shaped section faces the inside of the impeller body, the horizontal heights of the second outer arc-shaped section are the same, and the heights of the second inner arc-shaped section decrease progressively from outside to inside. The first air guide blade and the second air guide blade are large-amplitude blades, corresponding outer arc sections of the first air guide blade and the second air guide blade are arc structures with the same horizontal height, the inner arc sections are arc plates with gradually-reduced heights, the outer arc sections are large in blade height, and the air supply amount is high; interior arc height descends to descend, slowly with power transmission to the pivot time and can not arouse the damage of impeller because of pressure sudden change, this high pressure positive blower long service life.
Furthermore, a plurality of lightening holes are formed in the impeller body and are evenly distributed on the impeller body, and the circle center of a circle formed by the circle centers of the lightening holes is superposed with the circle center of the impeller body. The weight of the load required by the rotating shaft can be reduced by the introduced lightening holes, and a foundation is laid for the high air supply quantity of the fan.
Further, still include the casing, the casing sets up in the impeller outside. The introduced shell can effectively protect the impeller, so that the impeller is prevented from falling into dust due to long-time exposure in the air, and the service life of the impeller is prolonged.
Furthermore, the shell comprises a first shell and a second shell, wherein the first shell is provided with a plurality of first pin holes which are uniformly arranged, a first bulge is arranged between the two first pin holes, the second shell is provided with a plurality of second pin holes and second bulges which correspond to the first pin holes and the first bulges, and the first bulges and the second bulges form heat dissipation ports; the first shell and the second shell are fixedly connected through a pin shaft penetrating through the first pin hole and the second pin hole. The shell of the structure is convenient to disassemble and assemble and convenient to overhaul through the first shell and the second shell which are assembled and disassembled in a butt-joint mode; the first protrusion and the second protrusion introduced into the shell form a heat dissipation opening, so that pressure and heat generated by the impeller running at high speed are effectively dissipated, and the service life of the high-pressure fan is prolonged.
Furthermore, a plurality of first annular reinforcing ribs which are concentrically arranged and a plurality of first straight reinforcing ribs which point to the circle center of the shaft hole are arranged on the outer surface of the first shell; and a plurality of second annular reinforcing ribs which are concentrically arranged and a plurality of second linear reinforcing ribs pointing to the circle center of the shaft hole are arranged on the outer surface of the second shell. The outside of casing both sides all is equipped with crossing annular strengthening rib and sharp strengthening rib, improves the atress compressive strength of this casing, further improves high pressure positive blower's life.
Further, the shell is an aluminum shell. By adopting the aluminum shell, the weight of the shell can be effectively reduced, and the aluminum shell has good heat dissipation performance.
The invention has the beneficial effects that:
1. the high-pressure fan has the advantages that the wind guide blades on the impeller are reasonably designed and distributed, and the first wind guide blades and the second wind guide blades which are arranged on the impeller body in a staggered mode can fully realize large-air-volume conveying, so that the generated air volume is large; the air guide blades are reasonable in layout, good in damping and noise reduction effects in the working process, low in noise and stable in fan conveying; on the other hand, the impeller is small in size, so that the size of the high-pressure fan is further reduced, and the space required by the installation of the high-pressure fan is reduced; the first air guide blade and the second air guide blade are large-amplitude blades, corresponding outer arc sections of the first air guide blade and the second air guide blade are arc structures with the same horizontal height, the inner arc sections are arc plates with gradually-reduced heights, the outer arc sections are large in blade height, and the air supply amount is high; the height of the inner arc is gradually reduced, so that when power is slowly transmitted to the rotating shaft, the impeller cannot be damaged due to sudden pressure change, and the high-pressure fan is long in service life; the weight of the load required by the rotating shaft can be reduced by the introduced lightening holes, and a foundation is laid for the high air supply quantity of the fan.
2. The introduced shell can effectively protect the impeller, so that the impeller is prevented from falling into dust after being exposed in air for a long time, and the service life of the impeller is prolonged; the shell is conveniently disassembled and assembled and is convenient to overhaul through the first shell and the second shell which are assembled and disassembled in an opposite mode; the first bulge and the second bulge introduced into the shell form a heat dissipation port, so that pressure and heat generated by the impeller rotating at high speed are effectively dissipated, and the service life of the high-pressure fan is prolonged; the outer parts of the two sides of the shell are respectively provided with an annular reinforcing rib and a linear reinforcing rib which are intersected, so that the stress and pressure resistance strength of the shell is improved, and the service life of the high-pressure fan is further prolonged; by adopting the aluminum shell, the weight of the shell can be effectively reduced, and the aluminum shell has good heat dissipation performance.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic front view of a high pressure fan impeller according to the present invention;
FIG. 2 is a rear view of the impeller of the high pressure fan of the present invention;
FIG. 3 is a schematic view of the main structure of the high pressure fan of the present invention;
FIG. 4 is a cross-sectional view of AA in FIG. 3 of the high pressure blower of the present invention;
FIG. 5 is a schematic diagram of a right view structure of the high pressure fan of the present invention;
FIG. 6 is a schematic rear view of the high pressure fan housing of the present invention;
wherein: the impeller comprises an impeller 1, an impeller body 11, an axial hole 12, a first air guide blade 13, a first outer arc-shaped section 131, a first inner arc-shaped section 132, a second air guide blade 14, a second outer arc-shaped section 141, a second inner arc-shaped section 142, a lightening hole 15, a rotating shaft 2, a one-way clutch 3, a hydraulic motor 4, a housing 5, a first housing 51, a first pin hole 511, a first bulge 512, a first annular reinforcing rib 513, a first linear reinforcing rib 514, a second housing 52, a second pin hole 521, a second bulge 522, a second annular reinforcing rib 523, a second linear reinforcing rib 524 and a pin shaft 53.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 4, the high pressure fan comprises an impeller 1, a rotating shaft 2, a one-way clutch 3 and a hydraulic motor 4, wherein the rotating shaft 2 penetrates through the center of the impeller 1 and is arranged coaxially with the impeller 1, the one-way clutch 3 is sleeved at one end of the rotating shaft 2, and the hydraulic motor 4 is arranged at the outer end of the one-way clutch 3;
referring to fig. 1, 2 and 4, the impeller 1 includes an impeller body 11, a shaft hole 12, first wind guide blades 13 and second wind guide blades 14, the shaft hole 12 is coaxially disposed with the impeller body 11, the first wind guide blades 13 are disposed on one side surface of the impeller body 11, the second wind guide blades 14 are disposed on the other side surface of the impeller body 11, the first wind guide blades 13 and the second wind guide blades 14 have the same number and the same inclination direction, two adjacent first wind guide blades 13 are disposed in the middle of the other side surface of the impeller body 11, and the first wind guide blades 13 are disposed in the middle of two second wind guide blades 14 on the other side of the impeller body 11;
the first air guide blades 13 are curved plates, one side end parts of the first air guide blades are flush with the outer end of the impeller body 11, and the inner ends of the first air guide blades 13 are flush with each other; the second air guide blades 14 are curved plates, one end part of one side of each second air guide blade is flush with the outer end of the impeller body 11, and the inner ends of the second air guide blades 14 are flush with each other; the inner ends of the first air guiding blade 13 and the second air guiding blade 14 are on the same circular surface.
Specifically, the first air guide blade 13 is arranged at one end of the outermost side of the impeller body 11, and the included angle between one end of the first air guide blade closest to the center of the circle and the connecting line of the center of the circle of the shaft hole 12 is 34-40 degrees; the first wind-guiding blade 13 comprises a first outer arc-shaped section 131 and a first inner arc-shaped section 132, the arc length of the first outer arc-shaped section 131 is 60-85% of the total arc length of the first wind-guiding blade 13, and the included angle between the connecting line of the two end points of the first outer arc-shaped section 131 and the circle center of the shaft hole 12 is 17-24 degrees; the arc length of the first inner arc-shaped section 132 is 15-40% of the total arc length of the first air guide blade 13, and the included angle between the two end points of the first inner arc-shaped section 132 and the connecting line of the circle centers of the shaft holes 12 is 12-20 degrees; in this embodiment, preferably, the first air guiding vane 13 is arranged at one end of the outermost side of the impeller body 11, and an included angle between one end closest to the center of the circle and a connecting line of the center of the circle of the shaft hole 12 is 35.67 degrees; the first wind-guiding blade 13 comprises a first outer arc-shaped section 131 and a first inner arc-shaped section 132, the arc length of the first outer arc-shaped section 131 is 80% of the total arc length of the first wind-guiding blade 13, and an included angle between the connecting line of two end points of the first outer arc-shaped section 131 and the center of the shaft hole 12 is 22.75 degrees; the arc length of the first inner arc-shaped section 132 is 20% of the total arc length of the first air guide blade 13, and the included angle between the two end points of the first inner arc-shaped section 132 and the connection line of the circle centers of the shaft holes 12 is 12.92 degrees; the opening directions of the first outer arc-shaped section 131 and the first inner arc-shaped section 132 are opposite, the opening direction of the first outer arc-shaped section 131 faces the outside of the impeller body 11, the opening direction of the first inner arc-shaped section 132 faces the inside of the impeller body 11, the horizontal heights of the first outer arc-shaped section 131 are the same, and the heights of the first inner arc-shaped section 132 decrease from outside to inside;
the second air guide blade 14 is arranged at one end of the outermost side of the impeller body 11, and the end closest to the circle center forms an included angle of 34-40 degrees with the connecting line of the circle centers of the shaft holes 12; the second air guiding blade 14 comprises a second outer arc-shaped section 141 and a second inner arc-shaped section 142, the arc length of the second outer arc-shaped section 141 is 60-85% of the total arc length of the second air guiding blade 14, and the included angle between the connecting line of the two end points of the second outer arc-shaped section 141 and the circle center of the shaft hole 12 is 17-24 degrees; the arc length of the second inner arc-shaped section 142 is 15-40% of the total arc length of the second air guide blade 14, the included angle between the two end points of the second inner arc-shaped section 142 and the connecting line of the circle centers of the shaft holes 12 is 12-20 degrees, and in the embodiment, the second air guide blade 14 is preferably arranged at one end of the outermost side of the impeller body 11, and the included angle between the end closest to the circle center and the connecting line of the circle centers of the shaft holes 12 is 35.67 degrees; the second air guiding blade 14 comprises a second outer arc-shaped section 141 and a second inner arc-shaped section 142, the arc length of the second outer arc-shaped section 141 is 80% of the total arc length of the second air guiding blade 14, and an included angle between a connecting line of two end points of the second outer arc-shaped section 141 and the circle center of the shaft hole 12 is 22.75 degrees; the arc length of the second inner arc-shaped section 142 is 20% of the total arc length of the second air guide blade 14, and the included angle between the two end points of the second inner arc-shaped section 142 and the connection line of the circle centers of the shaft holes 12 is 12.92 degrees; the opening directions of the second outer arc-shaped section 141 and the second inner arc-shaped section 142 are opposite, the opening direction of the second outer arc-shaped section 141 faces the outside of the impeller body 11, the opening of the second inner arc-shaped section 142 faces the inside of the impeller body 11, the horizontal heights of the second outer arc-shaped section 141 are the same, and the heights of the second inner arc-shaped section 142 decrease from outside to inside.
The impeller body 11 is provided with a plurality of lightening holes 15, the lightening holes 15 are uniformly distributed on the impeller body 11, and the circle center of a circle formed by the circle centers of the lightening holes 15 is superposed with the circle center of the impeller body 11.
Referring to fig. 3-6, the high pressure fan further comprises a housing 5, wherein the housing 5 is arranged outside the impeller 1; the shell 5 comprises a first shell 51 and a second shell 52, wherein the first shell 51 is provided with a plurality of first pin holes 511 which are uniformly arranged, a first protrusion 512 is arranged between the two first pin holes 511, the second shell 52 is provided with a plurality of second pin holes 521 and second protrusions 522 which correspond to the first pin holes 511 and the first protrusions 512, and the first protrusions 512 and the second protrusions 522 form heat dissipation ports; the first housing 51 and the second housing 52 are fixedly connected by a pin 53 passing through the first pin hole 511 and the second pin hole 521.
A plurality of first annular reinforcing ribs 513 concentrically arranged and a plurality of first linear reinforcing ribs 514 pointing to the circle center of the shaft hole 12 are arranged on the outer surface of the first shell 51; a plurality of second annular reinforcing ribs 523 which are concentrically arranged and a plurality of second linear reinforcing ribs 524 which point to the center of the shaft hole 12 are arranged on the outer surface of the second shell 52; the shell 5 is an aluminum shell.
The high-pressure fan has the advantages that the wind guide blades on the impeller are reasonably designed and distributed, and the first wind guide blades and the second wind guide blades which are arranged on the impeller body in a staggered mode can fully realize large-air-volume conveying, so that the generated air volume is large; the air guide blades are reasonable in layout, good in damping and noise reduction effects in the working process, low in noise and stable in fan conveying; on the other hand, the impeller is small in size, so that the size of the high-pressure fan is further reduced, and the space required by the installation of the high-pressure fan is reduced; the introduced shell can effectively protect the impeller, so that the impeller is prevented from falling into dust after being exposed in air for a long time, and the service life of the impeller is prolonged; the shell is conveniently disassembled and assembled and is convenient to overhaul through the first shell and the second shell which are assembled and disassembled in an opposite mode; the first protrusion and the second protrusion introduced into the shell form a heat dissipation opening, so that pressure and heat generated by the impeller running at high speed are effectively dissipated, and the service life of the high-pressure fan is prolonged.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. High pressure positive blower, including impeller, pivot, one way clutch and hydraulic motor, the pivot passes the impeller center, sets up with the impeller is coaxial, a pivot tip cover is equipped with one way clutch, the outer tip of one way clutch is equipped with hydraulic motor, its characterized in that:
the impeller comprises an impeller body, a shaft hole, first air guide blades and second air guide blades, wherein the shaft hole and the impeller body are coaxially arranged, the first air guide blades are arranged on one side surface of the impeller body, the second air guide blades are arranged on the other side surface of the impeller body, the number of the first air guide blades is the same as that of the second air guide blades, the inclination directions of the first air guide blades and the second air guide blades are consistent, the second air guide blades are arranged in the middle of the other side surface of the impeller body of every two adjacent first air guide blades, and the first air guide blades are arranged in the middle of the two second air guide blades on the other side edge of the impeller body;
the first air guide blades are curved plates, one end part of one side of each first air guide blade is flush with the outer end of the impeller body, and the inner ends of the first air guide blades are flush with each other; the second air guide blades are curved plates, one end part of one side of each second air guide blade is flush with the outer end of the impeller body, and the inner ends of the second air guide blades are flush with each other; the inner ends of the first air guide blade and the second air guide blade are on the same circular surface.
2. The high pressure positive blower of claim 1, wherein: the first air guide blade is arranged at one end of the outermost side of the impeller body, and the included angle between one end of the first air guide blade closest to the circle center and the connecting line of the circle centers of the shaft holes is 34-40 degrees; the first air guide blade comprises a first outer arc-shaped section and a first inner arc-shaped section, the arc length of the first outer arc-shaped section is 60% -85% of the total arc length of the first air guide blade, and the included angle between the connecting line of the two end points of the first outer arc-shaped section and the circle center of the shaft hole is 17-24 degrees; the arc length of the first inner arc-shaped section is 15% -40% of the total arc length of the first air guide blade, and the included angle between the two end points of the first inner arc-shaped section and the connecting line of the circle centers of the shaft holes is 12-20 degrees; the opening directions of the first outer arc-shaped section and the first inner arc-shaped section are opposite, the opening direction of the first outer arc-shaped section faces the outside of the impeller body, the opening of the first inner arc-shaped section faces the inside of the impeller body, the horizontal heights of the first outer arc-shaped section are the same, and the heights of the first inner arc-shaped section decrease from outside to inside;
the second air guide blade is arranged at one end of the outermost side of the impeller body, and the included angle between one end of the second air guide blade, which is closest to the circle center, and the connecting line of the circle center of the shaft hole is 34-40 degrees; the second air guide blade comprises a second outer arc-shaped section and a second inner arc-shaped section, the arc length of the second outer arc-shaped section is 60% -85% of the total arc length of the second air guide blade, and the included angle between the connecting line of the two end points of the second outer arc-shaped section and the circle center of the shaft hole is 17-24 degrees; the arc length of the second inner arc-shaped section is 15-40% of the total arc length of the second air guide blade, and the included angle between the two end points of the second inner arc-shaped section and the connecting line of the circle centers of the shaft holes is 12-20 degrees; the opening direction of the second outer arc-shaped section is opposite to that of the second inner arc-shaped section, the opening direction of the second outer arc-shaped section faces the outside of the impeller body, the opening direction of the second inner arc-shaped section faces the inside of the impeller body, the horizontal heights of the first outer arc-shaped sections are the same, and the heights of the first inner arc-shaped sections decrease from outside to inside.
3. The high pressure positive blower of claim 1, wherein: the impeller body is provided with a plurality of lightening holes which are uniformly distributed on the impeller body, and the circle center of a circle formed by the circle centers of the lightening holes is superposed with the circle center of the impeller body.
4. The high pressure positive blower of claim 1, wherein: the impeller also comprises a shell, and the shell is arranged outside the impeller.
5. The high pressure positive blower of claim 4, wherein: the shell comprises a first shell and a second shell, wherein a plurality of first pin holes are uniformly formed in the first shell, a first bulge is arranged between the two first pin holes, a plurality of second pin holes and second bulges corresponding to the first pin holes and the first bulges are formed in the second shell, and the first bulges and the second bulges form a heat dissipation opening; the first shell and the second shell are fixedly connected through a pin shaft penetrating through the first pin hole and the second pin hole.
6. The high pressure positive blower of claim 5, wherein: the outer surface of the first shell is provided with a plurality of first annular reinforcing ribs which are concentrically arranged and a plurality of first straight reinforcing ribs which point to the circle center of the shaft hole; and a plurality of second annular reinforcing ribs which are concentrically arranged and a plurality of second linear reinforcing ribs pointing to the circle center of the shaft hole are arranged on the outer surface of the second shell.
7. The high-pressure fan according to claim 4 or 6, characterized in that: the shell is an aluminum shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894268.4A CN113606169A (en) | 2021-08-05 | 2021-08-05 | High-pressure fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894268.4A CN113606169A (en) | 2021-08-05 | 2021-08-05 | High-pressure fan |
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| Publication Number | Publication Date |
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| CN113606169A true CN113606169A (en) | 2021-11-05 |
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| CN202110894268.4A Pending CN113606169A (en) | 2021-08-05 | 2021-08-05 | High-pressure fan |
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| CN204419694U (en) * | 2014-11-19 | 2015-06-24 | 金广恒环保技术（南京）有限公司 | Modified model fan impeller system |
| US20170058914A1 (en) * | 2015-08-26 | 2017-03-02 | Lg Electronics Inc. | Centrifugal fan |
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