KR200493104Y1 - Air blower with air seal - Google Patents

Abstract

In an embodiment of the present invention, in a turbo device or an air blower device, the impeller part 10 is axially coupled with a motor 20 that provides rotational power, sucks outside air, converts it into air having a predetermined wind pressure, and discharges it. ); and shaft-coupled with the rotation center of the impeller part 10, and comprises a stator 210 and a rotor 220, and axially-coupled with the rotation center of the rotor 220, and the impeller part ( 10) a motor 20 comprising a shaft that provides rotational power to the motor 20; and a control unit 30 for controlling the driving and rotation speed of the motor 20; and the impeller-side shaft, It is located at a predetermined distance from the position where the shaft and the impeller housing in which the impeller is seated, is provided in a cylindrical shape that can be axially coupled with the outer diameter of the shaft, and generates a centrifugal force having a predetermined depth in the axial center direction on the outer circumferential surface. When the motor 20 rotates with respect to the air gap between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 to which the shaft and the impeller are axially coupled. It provides a configuration of an air blower equipped with an air seal, characterized in that air sealing is formed due to the generated centrifugal force.

Description

Air blower with air seal {Air blower with air seal}

The present invention relates to the structure of an air blower equipped with an air seal. In particular, the present invention relates to a sealing structure using an air shield film generated by rotational centrifugal force caused by rotation of the motor 20, not by a separate mechanical configuration. About.

Since this is a sealing structure using a shielding film made of a rotating wind generated by a centrifugal force according to rotation, it relates to a sealing structure that is more efficient and reliable than sealing that is uncertain due to mechanical wear or coupling tolerance.

The submersible pump, which transfers fluid using an impeller with a structure similar to that of a high-speed blower, prevents overload stop or impeller damage by penetrating the rotating gap due to reverse flow toward the impeller suction beam of sludge and foreign substances in the process of discharging the fluid containing the sludge. It is easy to trigger. This phenomenon frequently occurs in a closed impeller type in which the outer peripheral surface of the impeller is accommodated in a housing compared to an open impeller type in which the outer peripheral surface of the impeller is open.

As prior art documents that can be referenced in connection with the resolution of such a problem, Korean Utility Model Publication No. 1998-032604 (priority document 1), Korean Patent Application Publication No. 1709325 (priority document 2), and the like are known.

Prior Document 1 is formed in a position corresponding to a bent piece in a sleeve inserted into a rotation shaft to seat the bottom groove of the oil case, a block piece protruding downward from the bottom outer diameter surface of the oil case, and a block piece in the casing. Since it is a structure including grooves, it is expected to prolong the life of the pump by preventing abrasion of the sleeve and oil seal.

According to Prior Document 2, the strainer is inserted into the suction extension part through the detachable port to filter out foreign substances contained in the fluid, and is installed to slide in the direction in which the suction port is located from the suction extension part. As foreign substances accumulate, the suction force of the impeller As a result, it moves in the direction in which the impeller is located, thereby securing a fluid suction space. Accordingly, the effect of preventing clogging of the suction port by moving the strainer in proportion to the amount of foreign matter is expected.

However, according to the bent prevention piece of Prior Document 1 or the filter of the mesh type of Prior Document 2, it is not suitable for blocking the agglomeration of sludge and foreign matter by applying it to underwater transport and discharging of a fluid containing a large amount of sludge.

And, in the case of the sealing described in the preceding literature, it is designed to solve the problem through a mechanical structure, but this effectively prevents foreign substances from outside due to wear due to friction occurring in use or aging of the material over time. There is a problem that it is difficult to block.

Prior art literature

Patent Literature

(Patent Document 0001) Korean Utility Model Publication No. 1998-032604 "Structure for preventing foreign matter penetration of underwater pumps" (Publication date: 1998.09.05.)

(Patent Document 0002) Korean Patent Publication No. 1709325 "Onshore pump capable of removing foreign substances" (Publication date: 2017.02.23.)

The present invention is to solve the problems of the prior art as described above, in an embodiment of the present invention, provided on one side of the end of the shaft coupled to the impeller, using a rotating centrifugal wind according to the centrifugal force generated during rotation from the impeller side It is intended to provide an air seal structure that prevents foreign substances and the like from flowing into the motor 20.

In order to achieve the above object, in an embodiment of the present invention, in a turbo device or an air blower device, it is axially coupled with a motor 20 that provides rotational power, and an aerosol having a predetermined wind pressure by inhaling external air. An impeller part 10 that converts and discharges; And it is axially coupled with the rotation center of the impeller part 10, and comprises a stator 210 and a rotor 220, and the rotation center of the rotor 220 A motor (20) configured to include a shaft coupled to the shaft and providing rotational power to the impeller unit (10); and a control unit (30) for controlling the driving and rotational speed of the motor (20); The impeller-side shaft is located at a predetermined distance from a position where the shaft and the impeller housing on which the impeller is seated, and is provided in a cylindrical shape capable of axial coupling with the outer diameter of the shaft. The air gap between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 in which the shaft and the impeller are axially coupled is further provided with a sealing part 40 that is repeatedly formed by a centrifugal force generating part having a predetermined depth. On the other hand, it provides a configuration of an air blower equipped with an air seal, characterized in that an air seal is formed due to a centrifugal force generated when the motor 20 rotates.

At this time, the impeller unit 10 includes an inlet 110 through which external air is introduced, a discharge port 120 for supplying air having a predetermined wind pressure through the impeller in a predetermined direction, and a predetermined And an impeller housing in which the inlet 110 and the outlet 120 are respectively provided, and an impeller is seated and coupled to the inner space, and the shaft and the impeller are axially coupled to the impeller housing. A shaft fastening part 150 is further provided, and a predetermined separation distance is provided between the inner diameter of the shaft fastening part 150 and the outer circumferential part of the sealing part 40.

On the other hand, the sealing portion 40, an inner diameter portion 410 axially coupled to the shaft, a cylindrical body 420 having a predetermined outer diameter, and a predetermined height from one end to the other end on the outer peripheral surface of the body 420 It is formed repeatedly at intervals, is formed with an outer diameter relatively smaller than the outer diameter of the body 420 is provided including a centrifugal force generating unit 430 to form a predetermined space, the centrifugal force generating unit 430, the motor It is characterized in that when the (20) rotates, it generates a rotating wind according to the rotational centrifugal force according to the rotation.

In addition, the centrifugal force generating unit 430 is formed in one or more from one end to the other end of the outer circumferential surface of the body 420, can be formed at different height intervals, and is characterized in that it is provided with different outer diameters. .

In addition, the centrifugal force generating unit, the air that is generated by the rotational centrifugal force caused by the rotation of the motor 20 reaches the inner diameter of the shaft fastening unit 150 to block the inflow of foreign substances into the motor 20 from the impeller side. It is characterized by forming a sealing.

In the air blower provided with an air seal as described above according to an embodiment of the present invention, a predetermined air gap is formed between the centrifugal force generating unit 430 and the inner circumferential surface of the shaft fastening unit 150, but the motor 20 At the time of driving, the centrifugal force generating unit 430 generates rotational wind by centrifugal force according to the high-speed rotation by the high-speed rotation of the sealing unit 40, and a shielding film due to the rotational wind is formed between the sealing unit 40 and the shaft. It is generated in the air gap between the fastening parts 150.

The air shielding film thus generated forms a sealing film that prevents inflow from the impeller side to the inside of the motor 20 side, that is, the rotor 220 and the stator 210 side, which has a plurality of centrifugal force generators 430 In the case of being provided with, a plurality of the sealing films are formed, so that a more stable and reliable sealing structure can be provided.

In addition, the sealing structure as described above is not made by mechanical coupling, but is a sealing structure using a shielding film made of rotating wind generated by centrifugal force caused by rotation, so this is unclear due to mechanical wear and coupling tolerance. It has the effect of being more efficient and reliable than sealing.

1 shows a product of an air blower.
2 to 5 are exploded perspective views and cross-sectional views illustrating the configuration of an air blower equipped with an air seal according to an embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments within the scope of the same idea.

1 shows a product of an air blower. 2 to 5 are exploded perspective views and cross-sectional views illustrating the configuration of an air blower equipped with an air seal according to an embodiment of the present invention.

In a turbo device or an air blower device according to an embodiment of the present invention, an impeller part 10 that is axially coupled with a motor 20 that provides rotational power, sucks outside air, converts it to air having a predetermined wind pressure, and discharges it. ); and shaft-coupled with the rotation center of the impeller part 10, and comprises a stator 210 and a rotor 220, and axially-coupled with the rotation center of the rotor 220, and the impeller part ( 10) a motor 20 configured to include a shaft providing rotational power to the motor 20; and a control unit 30 for controlling the driving and rotation speed of the motor 20; and configured to include, the impeller 130 side The shaft is located at a predetermined distance from the position where the shaft and the impeller housing in which the impeller 130 is seated, is provided in a cylindrical shape that can be axially coupled with the outer diameter of the shaft, and the outer circumferential surface is provided in the direction of the axial center. A sealing part 40 formed by repeating a centrifugal force generating part having a depth of is further provided, and air between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 axially coupled to the shaft and the impeller 130 An air blower equipped with an air seal, characterized in that an air seal due to centrifugal force generated when the motor 20 rotates with respect to the gap, is formed.

At this time, the motor 20 may be applied with various types of motors 20 capable of speed control.

In detail, in the embodiment of the present invention, an example in which the inlet 110 and the outlet 120 are provided in a direction orthogonal to each other is presented, but it will be possible to change the design as much as possible according to the use or structural needs.

In the embodiment of the present invention, external air is introduced through the inlet 110, converted into compressed air having a predetermined wind pressure and wind speed through high-speed rotation of the impeller 130, and then forcibly exhausted to the discharge port 120. . At this time, heat is generated in the process of converting the compressed air exhausted through the outlet into compressed air compared to the temperature at the time of entering through the inlet 110 and rises by a predetermined temperature relative to the ambient outside air temperature.

As described above, it is possible to use the air whose temperature has risen through the compression process as a heater.

Meanwhile, the impeller unit 10 includes an inlet 110 through which external air is introduced, and an outlet 120 for supplying air having a predetermined wind pressure through the impeller 130 in a predetermined direction. And, provided with a predetermined internal space, each provided with the inlet 110 and the outlet 120, including an impeller housing in which the impeller 130 is seated and coupled to the inner space, the impeller housing has the A shaft coupling part 150 for axial coupling between the shaft and the impeller 130 is further provided, and a predetermined separation distance is provided between the inner diameter of the shaft coupling part 150 and the outer circumferential part of the sealing part 40. It is characterized.

At this time, the sealing portion 40, an inner diameter portion 410 axially coupled to the shaft, a cylindrical body 420 having a predetermined outer diameter, and a predetermined height from one end to the other end on the outer peripheral surface of the body 420 It is formed repeatedly at intervals, is formed with an outer diameter relatively smaller than the outer diameter of the body 420 is provided including a centrifugal force generating unit 430 to form a predetermined space, the centrifugal force generating unit 430, the motor (20) is characterized in that it generates a rotating wind according to the rotational centrifugal force according to the rotation when the rotation.

In detail, a shaft fastening portion 150 is provided on one side of the impeller 130 and the impeller housing coupled to each other, to which the shaft and the impeller 130 are axially coupled. The shaft fastening part 150 is provided on one side of the impeller housing, and is generally formed to be recessed into the impeller housing, and the shape thereof is provided in the form of a cylindrical hole having an inner diameter larger than the outer diameter of the shaft. desirable.

At this time, it is preferable that the sealing part 40 is axially coupled with the shaft at a predetermined distance from the position where the impeller 130 and the shaft are axially coupled, and the position is located within the shaft fastening part 150 .

On the other hand, the sealing portion 40 is formed to have an inner diameter of a size capable of axial coupling with the shaft, the outer diameter is provided relatively less than the inner diameter of the shaft fastening portion 150, provided to form a predetermined air gap Should be.

Meanwhile, at least one centrifugal force generating unit 430 is provided on the outer circumferential surface of the sealing unit 40. The centrifugal force generating unit may be provided in various sizes and shapes, but the embodiments of the present invention may be applied to the following embodiments.

In detail, the centrifugal force generating unit 430 is formed in one or more from one end to the other end of the outer circumferential surface of the body 420, but can be formed at different height intervals, and is characterized in that it is provided with different outer diameters. .

At this time, the centrifugal force generation unit 430, the rotational wind generated by the rotational centrifugal force according to the rotation of the motor 20 reaches the inner diameter of the shaft fastening unit 150 to the inside of the motor 20 from the impeller 130 side. It is characterized by forming an air seal that shields the inflow of foreign substances.

That is, a predetermined air gap is formed between the centrifugal force generating unit 430 and the inner circumferential surface of the shaft fastening unit 150, but the centrifugal force is caused by high-speed rotation of the sealing unit 40 when the motor 20 is driven. A rotational wind is generated in the generation unit 430 by centrifugal force due to high-speed rotation, and a shielding film due to the rotational wind is generated in the air gap between the sealing unit 40 and the shaft fastening unit 150.

The air shielding film thus generated forms a sealing film that prevents inflow from the impeller 130 to the inside of the motor 20, that is, to the rotor 220 and the stator 210, which is the centrifugal force generating unit 430 When a plurality of) are provided, a plurality of the sealing films are formed to provide a more stable and reliable sealing structure.

The above sealing structure is not made by mechanical coupling, but is a sealing structure using a shielding film made of rotating wind generated by centrifugal force caused by rotation, so this is more than an uncertain sealing due to mechanical abrasion or coupling tolerance. It would be a more efficient and reliable sealing structure.

On the other hand, according to another embodiment of the present invention, in a turbo device or an air blower device, it is axially coupled with a motor 20 that provides electric power, sucks outside air, converts it into air having a predetermined wind pressure, and discharges it. And the impeller unit 10; and shaft-coupled with the rotation center of the impeller unit 10, and configured to include the stator 210 and the rotor 220, and the axis-coupled with the rotation center of the rotor 220 And a motor 20 configured to include a shaft providing rotational power to the impeller unit 10, and configured to include, and on the shaft at the impeller 130 side, the impeller shaft and the impeller 130 are seated A sealing part that is located at a predetermined distance from the position where the housing is axially coupled, is provided in a cylindrical shape that can be axially coupled with the outer diameter of the shaft, and is formed repeatedly on the outer circumferential surface of a centrifugal force generating unit having a predetermined depth in the axial center direction ( 40) is further provided, and the air gap between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 to which the shaft and the impeller 130 are axially coupled, due to the centrifugal force generated when the motor 20 rotates It provides a configuration of an air blower equipped with an air seal, characterized in that the air sealing is formed.

In addition, the impeller unit 10 includes an inlet 110 through which negative air is introduced, and a discharge port 120 for supplying air having a predetermined wind pressure in a predetermined direction through the impeller 130, Provides a defined internal space, each provided with the inlet 110 and the discharge port 120, including an impeller housing in which the impeller 130 is seated and coupled in the inner space, and the shaft and the impeller A shaft coupling part 150 for shaft coupling 130 is further provided, and a predetermined distance is provided between the inner diameter of the shaft coupling part 150 and the outer circumferential part of the sealing part 40. .

At this time, the sealing portion 40, an inner diameter portion 410 axially coupled to the shaft, a cylindrical body 420 having a positive outer diameter, and a predetermined height distance from one end to the other end on the outer peripheral surface of the body 420 It is formed repeatedly, is formed with an outer diameter relatively smaller than the outer diameter of the body 420 is provided including a centrifugal force generating unit 430 to form a predetermined space, and the centrifugal force generating unit 430 includes the motor ( 20) is characterized in that it generates a rotating wind according to the rotational centrifugal force according to the rotation when the rotation is rotated.

On the other hand, the centrifugal force generating unit 430 is formed in one or more from one end to the other end of the outer circumferential surface of the body 420, but can be formed at different height intervals, and is characterized in that it is provided with a different outer diameter. .

And, the centrifugal force generating unit, the rotational wind generated by the rotational centrifugal force according to the rotation of the motor 20 reaches the inner diameter of the shaft fastening unit 150 to block the inflow of foreign substances into the motor 20 from the impeller 130 side. It is characterized in that to form an air sealing.

10. Impeller 20. Motor
210. Stator 220. Rotor
230. Shaft 30. Control
40. Sealing part 410. Inner diameter part
420. Body 430. Centrifugal force generator
110. Inlet 120. Outlet
130. Impeller 140. Impeller Housing
150. Shaft joint

Claims (2)

In the air blower,
An impeller part 10 that is axially coupled with a motor 20 that provides rotational power, sucks outside air, converts it into air having a predetermined wind pressure, and discharges it; And
It is axially coupled with the rotation center of the impeller part 10, and comprises a stator 210 and a rotor 220, and is axially coupled with the rotation center of the rotor 220, and the impeller part 10 A motor 20 comprising a shaft providing rotational power; and
And a control unit 30 for controlling the drive and rotation speed of the motor 20,
On the shaft on the side of the impeller 130,
It is located at a predetermined distance from a position where the shaft and the impeller housing on which the impeller 130 is seated, is provided in a cylindrical shape that can be axially coupled to the outer diameter of the shaft, and has a predetermined depth in the axial center direction. Further provided with a sealing portion 40 formed by repeating the excitation centrifugal force generating portion, the shaft coupling between the sealing portion 40 and the shaft is configured within the shaft fastening portion 150,
With respect to the air gap between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 to which the shaft and the impeller 130 are axially coupled, air sealing due to centrifugal force generated when the motor 20 rotates is formed,
The shaft fastening part 150 is provided on one side of the impeller housing, and is recessed into the impeller housing and is provided in the form of a cylindrical hole having an inner diameter larger than the outer diameter of the shaft,
The impeller part 10,
An inlet 110 through which external air is introduced,
A discharge port 120 for supplying air having a predetermined wind pressure in a predetermined direction through the impeller 130,
Providing a predetermined internal space, each provided with the inlet 110 and the discharge port 120, and is provided including an impeller housing in which the impeller 130 is seated and coupled to the inner space,
The impeller housing is further provided with a shaft coupling portion 150 for axial coupling between the shaft and the impeller, and a predetermined separation distance is provided between the inner diameter of the shaft coupling portion 150 and the outer circumference of the sealing portion 40 Become,
The sealing part 40,
An inner diameter portion 410 axially coupled to the shaft,
A cylindrical body 420 having a predetermined outer diameter,
A centrifugal force generating portion 430 formed on the outer circumferential surface of the body 420 at a predetermined height interval from one end to the other end and formed with an outer diameter relatively smaller than the outer diameter of the body 420 to form a predetermined space. Including,
The centrifugal force generating unit 430 generates a rotating wind according to a rotational centrifugal force according to rotation when the motor 20 rotates,
The centrifugal force generating unit 430,
One or more formed from one end to the other end of the outer peripheral surface of the body 420, but it is possible to be formed at different height intervals, each provided with a different outer diameter,
The centrifugal force generating unit,
The rotational wind generated by the rotational centrifugal force caused by the rotation of the motor 20 reaches the inner diameter of the shaft fastening part 150 to form an air seal that blocks the inflow of foreign substances from the impeller side to the inside of the motor 20. Air blower with air seal.
In the air blower,
An impeller part 10 that is axially coupled with a motor 20 that provides rotational power, sucks outside air, converts it into air having a predetermined wind pressure, and discharges it; And
It is axially coupled with the rotation center of the impeller part 10, and comprises a stator 210 and a rotor 220, and is axially coupled with the rotation center of the rotor 220, and the impeller part 10 It is configured to include; a motor 20 configured to include a shaft providing rotational power,
In the impeller-side shaft,
It is located at a predetermined distance from a position where the shaft and the impeller housing on which the impeller 130 is seated, is provided in a cylindrical shape that can be axially coupled to the outer diameter of the shaft, and has a predetermined depth in the axial center direction. Further provided with a sealing portion 40 formed by repeating the excitation centrifugal force generating portion, the sealing portion 40 and the shaft coupling between the shaft is configured in the shaft fastening portion 150,
With respect to the air gap between the outer circumferential surface of the sealing part 40 and the shaft fastening part 150 to which the shaft and the impeller 130 are axially coupled, air sealing due to centrifugal force generated when the motor 20 rotates is formed,
The shaft fastening part 150 is provided on one side of the impeller housing, and is recessed into the impeller housing and is provided in the form of a cylindrical hole having an inner diameter larger than the outer diameter of the shaft,
The impeller part 10,
An inlet 110 through which external air is introduced,
A discharge port 120 for supplying air having a predetermined wind pressure in a predetermined direction through an impeller,
Providing a predetermined internal space, each provided with the inlet 110 and the discharge port 120, and provided including an impeller housing in which the impeller is seated and coupled to the inner space,
The impeller housing is further provided with a shaft coupling portion 150 for axial coupling between the shaft and the impeller, and a predetermined separation distance is provided between the inner diameter of the shaft coupling portion 150 and the outer circumference of the sealing portion 40 Become,
The sealing part 40,
An inner diameter portion 410 axially coupled to the shaft,
A cylindrical body 420 having a predetermined outer diameter,
A centrifugal force generating portion 430 formed on the outer circumferential surface of the body 420 at a predetermined height interval from one end to the other end and formed with an outer diameter relatively smaller than the outer diameter of the body 420 to form a predetermined space. Including,
The centrifugal force generating unit 430 generates a rotating wind according to a rotational centrifugal force according to rotation when the motor 20 rotates,
The centrifugal force generating unit 430,
One or more formed from one end to the other end of the outer peripheral surface of the body 420, but it is possible to be formed at different height intervals, each provided with a different outer diameter,
The centrifugal force generating unit,
The rotational wind generated by the rotational centrifugal force caused by the rotation of the motor 20 reaches the inner diameter of the shaft fastening part 150 to form an air seal that blocks the inflow of foreign substances from the impeller side to the inside of the motor 20. Air blower with air seal.

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