KR20200105168A - Air pump using multistage impeller - Google Patents

Abstract

The present invention relates to an air pump using a multistage impeller, and more specifically, to an air pump using a multistage impeller, which improves the moving speed of air because a plurality of impellers are disposed at intervals from each other on a rotating shaft of a motor, can be expected to have low noise and high efficiency effects while compressing air, and is disposed in a nano bubble generating device to increase the amount of fine bubbles generated. To this end, the air pump using the multistage impeller includes: a housing including a lower body in which a motor is disposed, and an upper cover coupled to an upper end of the lower body; the plurality of impellers disposed at mutually spaced positions along the longitudinal direction of the rotating shaft coupled to the motor; a guide vane disposed between the impellers and having an inlet into which gas formed by one impeller flows, and an outlet for discharging the introduced gas toward another impeller; and a flow case having an outlet for discharging the gas rotated by the impeller to the outside.

Description

Air pump using multistage impeller}

The present invention relates to an air pump using a multi-stage impeller, and more particularly, by arranging a plurality of impellers at a distance from each other on a rotating shaft of a motor to improve the moving speed of air, and the effect of low noise and high efficiency while compressing the air. It can be expected, and is disposed in a nano-bubble generator to increase the generation amount of micro-bubbles, it relates to an air pump using a multi-stage impeller.

In general, an air pump compresses and discharges air, and includes a reciprocating pump, a rotary pump, and an ejector that ejects high-pressure steam from a nozzle and sucks air with its force.

These air pumps are used for various purposes, but high decibels of noise are generated during the operation of pistons, compressors, etc. that are disposed inside to compress air or increase speed, and vibrations of each component are generated. There was a problem that the joint portion was damaged or broken.

In addition, in order to increase the capacity of the air pump, since there is no other means other than increasing the size of the piston, the compressor, etc., the size is formed in proportion to the capacity, and there is a problem in that the installation environment is limited.

On the other hand, nanobubbles refer to ultra-fine bubbles with a diameter of less than or equal to 1 μm, which cannot be seen with the naked eye.

Nano bubbles are 1/2000 of the size of normal bubbles and are smaller than 25㎛, which is the pore diameter of the skin, and when they disappear, they generate 40Khz of ultrasonic waves, generate high sound pressure of 140db, and generate instantaneous high heat of 4,000~6,000℃. It has a characteristic to generate.

These nanobubbles are ultra-fine bubbles that occur when water and air are violently rotated, mixed, and agitated. They are created in the process of shrinking in water, stay for a long time and dissolve, and generate various energies as described above. And disappears.

Nanobubbles having the above characteristics have effects such as gas dissolution, self-pressurization, and charging, and are used in various areas due to physical and chemical properties.For example, fishery fields such as fish and shellfish farms, hydroponics, food processing, It is used in the livestock industry, and in the medical field, it is used for precision diagnosis, physical therapy, high-purity water treatment, sterilization treatment, agricultural and industrial wastewater treatment, ultra-precision electronic component semiconductor wafer cleaning, and environment for improving water quality in lakes, rivers, and seas. It is used in various fields such as devices.

As a prior art for providing such nano bubbles, Korean Patent Registration No. 10-1235663 has been proposed.

The prior art relates to a'nanobubble forming device', comprising a centrifugal impeller rotating by a driving motor, a bubble generating member rotating together with the centrifugal impeller and generating nanobubbles in a gas, and a centrifugal impeller and a bubble generating member. It includes a casing surrounding the circumference, and the bubble generating member is formed in a ring shape and has a plurality of first bubble protrusions radially circumferentially spraying the gas in a lateral direction so that the gas hits the inner circumferential surface of the casing to generate nanobubbles. The provided outer ring, formed with a diameter smaller than the diameter of the outer ring, is located on the inner side of the outer ring, and the drive shaft penetrates and is coupled at the center, and the gas hits the inner circumferential surface of the outer ring to generate nanobubbles so that the gas is injected laterally. The second bubble protrusion includes an inner ring having a plurality of radially circumferential portions thereof and a plurality of ribs connecting the outer ring and the inner ring to each other.

In the prior art made as described above, the bubble generating member including the outer ring and the inner ring rotates together with the centrifugal impeller to push the gas in the lateral direction, and the gas is made to generate nanobubbles due to the impact hitting the inner peripheral surface of the casing.

However, in the prior art, the bubble generating member pushes the gas toward the inner circumferential surface of the casing, thereby preventing the flow of gas.

In other words, the gas moves in a continuous flow from suction to discharge, and the gas is pushed to the inner circumferential surface of the casing by the bubble generating member, and in the process of returning the pushed gas back, it collides with the moving gas, causing an impact. Becomes a resistance force that impedes the flow of gas. Accordingly, there is a problem in that the flow is disturbed between the gas pushed out by the bubble generating member and the gas returning after colliding on the inner circumferential surface of the casing, thereby slowing or interrupting the continuous flow of the entire gas.

Korean Patent Registration No. 10-1235663

The present invention has been proposed to solve the above problems, and provides an air pump using a multistage impeller capable of obtaining low noise and high efficiency by increasing the rotational speed of air and discharging it through an impeller arranged in multistage. There is a purpose.

In order to achieve the above object, the present invention,

A housing including a lower body in which the motor is disposed and an upper cover coupled to an upper end of the lower body; and

A plurality of impellers disposed at mutually spaced positions along the longitudinal direction of the rotating shaft coupled to the motor; And,

A guide vane disposed between the impellers and having an inlet into which gas formed by one impeller flows in, and an outlet for discharging the introduced gas to the other impeller side; And,

It characterized in that it comprises a flow path case formed with an outlet for discharging the gas rotated by the impeller to the outside.

In addition, the impeller,

It is made in the form of a case with an opening on one side and a receiving part formed on the inside, and is disposed in a case formed through an inlet hole through which gas is introduced,

A pair of sidewalls disposed so as to face each other in the receiving part, one of which has a suction port in communication with the inlet hole, and the other with a fastening hole through which the rotating shaft is inserted,

Doedoe disposed between the side walls, a plurality of radially disposed with respect to the center point of the side wall and characterized in that it comprises a wing formed with a discharge port for discharging a gas through a pair of adjacent.

At this time, the wings,

It is characterized in that the thickness of the blades formed on the impeller adjacent to the flow path case is formed to have a relatively thin thickness compared to the thickness of the blades formed on other impellers.

In addition, the guide vane,

A coupling portion coupled to one side of the case,

It is characterized in that the body portion is formed to be bent outward from the coupling portion and disposed at a position spaced apart from one surface of the case.

At this time, the coupling portion,

A through hole through which gas passes is further formed at one end disposed close to the outlet.

The present invention made as described above improves the rotational speed of the gas by rotating the gas through a plurality of impellers, thereby forming a high compression efficiency in the same area, and further compressing the gas by rotating the impeller. It is effective in reducing noise during operation.

1 is an exemplary exploded view of an air pump using a multistage impeller according to the present invention
Figure 2 is a cross-sectional view of the combined state of the air pump utilizing the multi-stage impeller according to the present invention.
Figure 3 is an exemplary view showing an impeller according to the present invention.
Figure 4 is an exemplary view showing a guide vane according to the present invention.

Hereinafter, other objects and features of the present invention in addition to the above objects will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, a preferred embodiment of an air pump using a multistage impeller according to the present invention will be described with reference to the accompanying drawings.

First, the air pump 1 using the multi-stage impeller according to the present invention includes a housing 10, a plurality of impellers 20, a guide vane 30, and a flow path case 40.

The housing 10 is a motor 13 is disposed and the above configuration is disposed inside and is to protect them from external impact and foreign matter,

And a lower body 12 on which the motor 13 is disposed, and an upper cover 11 coupled to an upper end of the lower body 12.

Here, the motor 13 rotates the coupled rotary shaft 131 while operating by the applied power and signal.

The lower body 12 has the motor 13 fixedly disposed, and has an open upper end, and the upper cover 11 is coupled to close the open upper end of the lower body 12, The combined portion is sealed through a packing (not shown).

In the present invention, the housing 10 is constituted of a lower body 12 and an upper cover 11, respectively, to improve the convenience of the motor 13 disposed therein and maintenance and replacement of the configuration.

A plurality of the impellers 20 are disposed at a distance from each other along the longitudinal direction of the rotation shaft 131 coupled to the motor 13 disposed in the housing 10, and suck gas introduced into the housing. After that, it is rotated to increase the speed and then discharged.

To this end, the impeller 20,

It is made in the form of a case having an opening on one side and having a receiving portion 51 formed therein, and an inlet hole 52 through which gas is introduced into the center is disposed in the case 50 formed therethrough,

It is disposed so as to face each other in the receiving portion 51, one of the suction holes 211 in communication with the inlet hole 52 is formed, the other is a fastening hole 212 through which the rotation shaft 131 is inserted ) And a pair of sidewalls 21 formed therein,

Doedoe disposed between the side walls 21, a plurality of radially disposed with respect to the center point of the side wall 21 includes a blade 22 formed with a discharge port 221 for discharging a gas through a pair of adjacent.

In the case 50, gas is introduced through the inlet hole 52 and the impeller 20 is disposed in the receiving part 51. In the following description, the opening of the case 50 The resulting direction is called downward, and the symmetrical direction is called upward.

In the case 50, the diameter of the receiving part 51 is formed relatively larger than the outer diameter of the impeller 20 to be disposed, and the opened lower rim is disposed on the upper surface of the upper end of the adjacent other case 50 . Through this, the moving speed of the gas moving inside the case 50 is not disturbed by the gas moving outside the case 50.

On the other hand, the opened lower edge of the case 50 disposed at the bottom of the case 50 is disposed on the upper surface of the flow path case 40 to be described later.

The side walls 21 are arranged in a pair so as to face each other in the receiving portion 51, are formed in a flat plate shape, and are arranged at intervals from each other.

At this time, any one side wall 21 has an inlet 211 in communication with the inlet hole 52 and through which gas is introduced, and the other side wall 21 has a fastening hole in which the rotation shaft 131 is coupled. 212 is formed so that the side wall 21 rotates when the rotation shaft 131 is rotated according to the driving of the motor 13.

In addition, a coupling hole 213 through which the coupling protrusion 222 formed on the wing 22 is inserted is formed in the side wall 21, through which the pair of side walls 21 are integrally coupled.

The blades 22 are arranged radially with respect to the center point of the side wall 21, and preferably, as each side wall 21 faces a spiral or rim of the side wall to increase the rotational speed of the gas They are arranged so that the space between them becomes wider.

Gas is introduced between the blades 22 and the blades 22 arranged as described above through the inlet 211 and then rotates while being discharged through the discharge ports 221 formed between the blades 22 and the blades 22.

The discharged gas is in contact with the inner circumferential surface of the case 50 and nanobubbles are generated, and the generated nanobubbles are contained in the gas through the inlet hole 52 of the case 50 disposed below the impeller 20 ) Or discharged through the outlet 41 of the flow path case 40.

On the other hand, the wing 22 has a plurality of coupling protrusions 222 formed at the top or bottom, or both, and are respectively coupled to a pair of side walls 21, thereby integrating a pair of side walls 21 and the wings 22 Combine with Of course, the wing 22 may be integrally fixed to the side wall 21 through welding or the like.

And, the wing 22 is formed to have a different thickness in each of the plurality of impellers 20,

The thickness of the blades 22 formed on the impeller 20 adjacent to the flow path case 40 is formed to have a relatively thin thickness compared to the thickness of the blades 22 formed on the other impellers 20.

That is, as shown in the drawing, the thickness of the blades 22 formed on the impeller 20 positioned above is relatively thicker than the thickness of the blades formed on the impeller 20 positioned below.

This is to prevent more resistance force to be generated in order to change the moving direction of gas flowing into the upper impeller 20, and to prevent the blade 22 of the upper impeller 20 from being damaged by this resistance force. .

This is because the impeller 20, which is relatively located below, generates relatively little resistance because the incoming gas is already rotated and introduced, so that there is little risk of damage even if a thin blade is disposed.

Of course, it is possible to reduce the problem of damage or damage by thickening the blades of all the impellers 20, but when the impeller 20 becomes heavy due to the weight of the blades 22, this causes slowing the rotational speed of the impeller. Therefore, it is desirable to increase the thickness of only the blades at the locations where the resistance force according to the change in the direction of movement of the aircraft is high so as to ensure the rotational speed of the impeller while improving durability.

The guide vane 30 is disposed between the impellers 20 to transmit the gas rotating through the impeller 20 and the nanobubbles generated by colliding with the inner circumferential surface of the case to the next impeller 20 ,

A coupling part 31 coupled to one surface of the case 50,

And a body portion 32 that is bent outwardly from the coupling portion 31 and disposed at a position spaced apart from one surface of the case 50.

Here, the guide vane 30 allows the gas to be introduced while rotating when the gas discharged from the impeller 20 disposed above flows into the impeller 20 disposed below.

That is, the impeller 20 is introduced into the gas through the inlet 211 in communication with the inlet hole 52 of the case 50, as described above, both the inlet hole 52 and the inlet 211 Since it is formed vertically as a standard, it is difficult for the gas that moves while being discharged from the impeller disposed above and rotates to quickly enter the inlet hole of the case disposed below, and the inflow direction changes even if it is introduced, so the moving speed of the gas is increased. There was a problem of slowing down.

Accordingly, in the present invention, the gas is rotated through the guide vane 30 to move to the inlet hole 52.

Looking at this in more detail, first, the guide vane 30 is formed by bending a flat plate, and the coupling portion 31 disposed below in the bent form is one side of the case 50, more precisely, It is coupled to the upper surface of the case 50.

In addition, the body portion 32 bent outward from the coupling portion 31 includes an inlet 34 through which gas is introduced between the upper surface of the case 50 to which the coupling portion 31 is coupled, and An outlet 35 for discharging the resulting gas to the other impeller 20 side, more precisely to the inlet hole 52 side of the case 50 is formed.

Here, the body portion 32 is formed in a number of radially, preferably the width of the inlet 34 is formed relatively larger than the width of the outlet 35 is formed in a spiral shape narrowing the width toward the outlet as a whole. , As the introduced gas passes through the passage between the inlet and the outlet gradually narrowing, the speed is increased and then discharged from the outlet 35.

On the other hand, the coupling part 31 is further formed with a through hole 33 through which gas passes through an end face of the inlet hole 52 formed in the case 50.

That is, the gas moving along the outer surface of the coupling part 31 flows into the inlet hole 52 through the through hole 33, and at this time, the coupling part 31 also forms a spiral shape as shown. Therefore, the gas moving along the outer surface does not generate a resistance force during rotation, so it moves while maintaining the rotational speed, and then passes through the through hole 33 and then flows into the inlet hole 52.

The flow path case 40 is formed with an outlet 41 for discharging a gas having a high moving speed (rotation speed) to the outside while passing through the impeller 20, and is disposed at the bottom of the multi-stage impeller 20 It is disposed below the impeller 20.

In this case, the location of the outlet 41 can be changed according to the direction in which gas is to be discharged, and is not limited to the illustrated location and shape.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. .

1: Air pump using a multistage impeller according to the present invention
10: housing
11: upper cover 12: lower body
13: motor 131: rotating shaft
20: impeller
21: a pair of side walls 22: wings
30: guide vane
31: coupling portion 32: body portion
33: through hole 34: inlet
35: outlet
40: Euro case
41: outlet
50: case
51: receiving part 52: inlet hole

Claims (5)

A housing 10 including a lower body 12 on which the motor 13 is disposed and an upper cover 11 coupled to an upper end of the lower body 12; And,
A plurality of impellers 20 disposed at mutually spaced positions along the longitudinal direction of the rotating shaft 131 coupled to the motor 13; And,
A guide vane disposed between the impellers 20 and having an inlet 34 into which gas formed by one impeller flows in, and an outlet 35 for discharging the introduced gas to the other impeller 20 side ( 30); and,
An air pump utilizing a multistage impeller, characterized in that it comprises a flow path case (40) having an outlet (41) for discharging the gas rotated by the impeller (20) to the outside.
The method of claim 1, wherein the impeller (20),
It is made in the form of a case having an opening on one side and having a receiving portion 51 on the inside thereof, and an inlet hole 52 through which gas is introduced is disposed in the case 50 through which the gas is introduced,
It is disposed so as to face each other in the receiving portion 51, one of the suction holes 211 in communication with the inlet hole 52 is formed, the other is a fastening hole 212 through which the rotation shaft 131 is inserted ) And a pair of sidewalls 21 formed therein,
It is disposed between the side walls 21, a plurality of radially arranged based on the center point of the side wall 21, characterized in that it comprises a blade 22 formed with a discharge port 221 for discharging gas through a pair of adjacent Air pump using multi-stage impeller.
The method of claim 2, wherein the wing (22),
Multistage impeller, characterized in that the thickness of the blade 22 formed on the impeller 20 adjacent to the flow path case 40 is formed to have a relatively thin thickness compared to the thickness of the blade 22 formed on the other impeller 20 Air pump utilizing the.
The method of claim 2, wherein the guide vane (30),
A coupling part 31 coupled to one surface of the case 50,
An air pump using a multi-stage impeller, characterized in that a body portion 32 that is bent outwardly formed from the coupling portion 31 and disposed at a position spaced from one surface of the case 50 is provided.
The method of claim 4, wherein the coupling portion (31),
An air pump utilizing a multistage impeller, characterized in that a through hole 33 through which gas passes is further formed at one end disposed close to the outlet 35.

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