KR101483013B1 - blush less direct current pump having two-way pumping structure - Google Patents

blush less direct current pump having two-way pumping structure Download PDF

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Publication number
KR101483013B1
KR101483013B1 KR20140058103A KR20140058103A KR101483013B1 KR 101483013 B1 KR101483013 B1 KR 101483013B1 KR 20140058103 A KR20140058103 A KR 20140058103A KR 20140058103 A KR20140058103 A KR 20140058103A KR 101483013 B1 KR101483013 B1 KR 101483013B1
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South Korea
Prior art keywords
impeller
coupled
pumping
pump
fluid
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KR20140058103A
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Korean (ko)
Inventor
유미혜
주재규
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유미혜
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Priority to KR20140058103A priority Critical patent/KR101483013B1/en
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Publication of KR101483013B1 publication Critical patent/KR101483013B1/en

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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps

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

Abstract

The present invention relates to a bi-directional pump having a bi-directional pumping structure, which separates and forms an inside of a bi-direction pump and sucks fluids into the separately formed bi-direction pump as the impeller rotates simultaneously, Thereby discharging the fluid to the outside.
To this end, the present invention is characterized in that each of the first and second pumping portions, each having an internal space for the pump to separate and form the inside of the BID pump and suck and discharge the fluid into the separately formed inside, And a second pumping portion is coupled to a shaft having one end located within the first pumping portion and the other end located within the second pumping portion, and at both ends of the shaft, first and second And the impeller is rotatably coupled.

Description

[0001] The present invention relates to a two-way pumping structure having a two-way pumping structure,

[0001] The present invention relates to a BLDC pump for pumping fluid to be sucked and discharged, more particularly, to a pump for separating and forming the inside of a BLDC pump, A bi-directional pumping structure for rotating the impeller and simultaneously driving the impellers to suck fluids into the separately formed BDD pump and to discharge the respective sucked fluids to the outside, .

Generally, the pump is to draw up a fluid or a gas (hereinafter, referred to as 'fluid') and pump it into the pump and discharge the sucked fluid to the outside, thereby transferring the fluid to a desired location , The pump includes a reciprocating pump, a rotary pump, a centrifugal pump, and an axial flow pump.

In such a conventional pump, there is a problem that noise and vibration are generated in a process of sucking and discharging the fluid into the pump. In order to reduce the vibration and noise, there is a BLDC (BLDC: DIRECT CURRENT) pumps.

The BLDC pump includes a coil through which a current flows by an external power source, a permanent magnet generating a magnetic force, and an impeller coupled with a permanent magnet rotated by an interaction between the coil and the permanent magnet A DC power source applied from the outside is converted into an alternating current, the impeller coupled with the permanent magnet is rotated, the fluid is sucked into the pump by the rotating impeller, and the sucked fluid is redirected And then discharges the diverted fluid to the outside of the pump.

However, since the conventional BI DS pump has a structure having only one inlet and one outlet for sucking and discharging the fluid, there is a limit to increase the pumping efficiency of the BI DS pump. In order to increase the efficiency of the BI DS pump As the size of the pump has to be made larger, there is a problem that the manufacturing cost of the BI Dish pump is increased compared to the pumping efficiency of the pump.

Further, since a rotating impeller for pumping a fluid, i.e., sucking and discharging the fluid, is coupled to the shaft by a bearing, the impeller is shaken while the impeller is rotated to pump the fluid. There is a problem that noise or vibration in the axial direction or noise is generated severely.

Korean Patent Laid-Open No. 10-2003-0013187 (Feb. 14, 2003)

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-mentioned problems in the prior art, and it is an object of the present invention to provide a pumping system, The impeller is simultaneously rotated in the shaft of the BI DS pump so that the first and the second pumping parts are connected to the first and second pumping parts, respectively, And the pumping function for sucking and discharging are performed at the same time.

According to another aspect of the present invention, there is provided a biodiesel pump including a driving coil and a driving magnet, a fixed side suspension magnet in a main body of the first and second pumping units, And a negative pressure canceling flow passage through which the fluid flows in each of the impellers. The electromagnetic force between the drive coil and the magnet, the magnetic force between the respective suspension magnets, and the negative pressure canceling flow path, And an object of the present invention is to minimize the noise and vibration generated in the BI Dish Pump as the main body of each of the first and second pumping parts of the pump and the respective impellers are spaced apart from each other and the impellers are rotated without shaking.

According to an aspect of the present invention, there is provided a PDMS pump for sucking and sucking a fluid to change direction of the fluid and discharging the fluid to the outside, the PDMS pump comprising: Wherein the first and second pumping units are respectively provided with first and second pumping units each having an internal space for sucking and discharging the fluid, Wherein the first and second impellers are rotatably coupled to both ends of the shaft, wherein the first and second impellers are rotatably coupled to each other in accordance with an interaction with the driving driver device. Is provided.

According to the present invention, the first pumping unit provided on one side of the BI DS pump includes a first housing having a first suction port and a first discharge port, a first body coupled to the first housing, And a first impeller rotatably coupled to one end of the shaft so as to be positioned between the first housing and the first body and having a first fixing yoke and a first driving magnet interacting with driving coils of the driving driver device The second pumping unit provided on the other side of the BI DS pump includes a second housing formed with a second suction port and a second discharge port, a second main body coupled to the second housing and having a shaft coupled to a central portion thereof, And a second impeller rotatably coupled to the other end of the shaft so as to be positioned between the housing and the second body and having a second fixed yoke and a second drive magnet interacting with the drive coils of the drive driver device A bidirectional pumping structure is provided.

The first impeller includes a first impeller body, a plurality of first blades coupled to an outer surface of the first impeller body, and a second impeller installed in the first impeller body to interact with a drive coil of the drive- A first suspension yoke and a first drive magnet for rotating the first impeller while rotating the first impeller, a first suspension magnet coupled to the first impeller body and coupled to the first and second main bodies, And a first sealing cap which is coupled to a rear surface of the first impeller body and seals the inside of the first impeller body, the second impeller includes a second impeller body, a second impeller body coupled to an outer surface of the second impeller body, A second fixed yoke and a second driving magnet provided on the first impeller body for rotating the second impeller while acting on the driving coils of the driving driver device, A second suspension magnet coupled to the feller body and facing the fixed-side suspension magnet coupled to the first and second bodies at different polarities; and a second suspension magnet coupled to the rear surface of the second impeller body to seal the interior of the second impeller body. 2 sealing cap. The bi-directional pumping structure is characterized in that the bi-directional pumping structure is composed of two sealing caps.

According to the present invention as described above, the first and second pumping portions are separately formed in the internal space of the BI Dish Pump, and the impeller rotatably coupled to both ends of one shaft in the first and second pumping portions The impeller is simultaneously rotated in the shaft of the BI DS pump to simultaneously suck and discharge the fluid into the first and second pumping parts, Accordingly, the pumping action of the fluid in the one BI DS pump is performed simultaneously in both directions, thereby increasing the pumping efficiency of the BI DS pump.

On the other hand, the first and second pumping portions of the BI Dish pump are provided with drive coils, and the impellers are provided with first and second drive magnets, so that currents flowing in the drive coils and generated in the first and second drive magnets As the impellers are simultaneously rotated while the magnetic forces interact with each other, the pumping action in the BI Dish pump can be smoothly performed.

The first and second suspension magnets include a fixed-side suspension magnet between respective bodies of the first and second pumping portions of the BI Dish pump, and the impellers each have first and second suspension magnets facing different polarities from each other , The rotating impeller and the main body of the first and second pumping parts maintain a predetermined distance by the repulsive force generated between the suspension magnets, that is, the force to push them against each other, thereby preventing the interference between the impellers and the main body There is also an effect.

Since each of the negative pressure canceling passages of the respective impellers forms a negative pressure cancellation passage through which the fluid flows in each of the impellers, the fluid sucked into the bideli pump is sucked and flowed into the first and second pumping portions of the bideli pump, There is also an effect of reducing the irregular load fluctuation caused by the suction amount in which the fluid is irregularly sucked.

Therefore, the electromagnetic force between the drive coil and the first and second drive magnets, the magnetic force (repulsive force) between the fixed-side suspension magnet and the first and second suspension magnets, and the respective negative pressure canceling flow paths of the impellers, The main body of the pumping unit 1 and the impellers are maintained at a constant interval, and the impellers are smoothly rotated without rotation and bearing without fluctuation according to the load fluctuation as much as possible, There is also an effect of minimizing frictional noise or vibration in the axial direction.

Meanwhile, by coupling the connection pipe to communicate the discharge port of the first pumping unit and the suction port of the second pumping unit of the BI Dish Pump, the fluid discharged from the first pumping unit is sucked into the second pumping unit, As the fluid is discharged to the outside through the discharge port, the amount of fluid to be pumped by the PFD is increased, and the fluid is discharged at a high speed, so that the pumping efficiency of the PFD can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a BI DS pump having a bi-directional pumping structure of the present invention.
FIG. 2 is a perspective view showing the interior of the BI DS pump of the present invention in a semi-sectional state. FIG.
3 is a cross-sectional view of the BI DS pump of the present invention.
FIG. 4 is an exploded perspective view of the BI Dish Pump according to the present invention in a state in which the respective components are separated. FIG.
FIG. 5 is an exploded perspective view showing the state roll of the impeller in which the respective components of the impeller are separated in the BI DS pump of the present invention. FIG.
FIG. 6 is a front view of the impeller of the BI Dish Pump according to the present invention viewed from the front. FIG.
7 is a cross-sectional view of the impeller of the inventive BI DS pump in cross section.
8 shows another embodiment of the BI DS pump of the present invention.

Hereinafter, a bi-direction pump having a bi-directional pumping structure according to the present invention will be described in more detail with reference to FIGS. 1 to 8. FIG.

The impeller 130 and 230 are coupled to both ends of one shaft 30 so that the impellers 130 and 230 are disposed around the shaft 30, And a BLDC (BLUSH LESS DIRECT CURRENT) pump (1) for pumping the fluid to and from the respective separated and formed internal space portions, respectively, in both directions of the pump.

As shown in FIGS. 1 to 4, the BI PD pump 1 is provided with a plurality of bi-directional pumps 1 and 2, respectively, for sucking and discharging fluids, that is, And the first and second pumping parts 10 and 20 are separated from each other.

In the first and second pumping units 10 and 20, both ends are positioned in the inner space of the first and second pumping units 10 and 20, that is, one end is located in the inner space of the first pumping unit 10, The shaft 30 is positioned in the inner space of the second pumping portion 20.

A first impeller 130 is rotatably coupled to one end of the shaft 30 in accordance with an interaction with a driving driver device 40 to be described later. The second impeller 230 rotating in accordance with the interaction with the second impeller 40 is rotatably coupled.

A bushing 301 for firmly coupling the shaft 30 to the first and second main bodies 120 and 220 of the first and second pumping units 10 and 20 to be described later is formed on the outer surface of the shaft 30 And the bushing 301 is formed of ceramic.

The washer 302 is coupled to both ends of the shaft 30 to prevent the first and second impellers 130 and 230 coupled to both ends of the shaft 30 from being detached from the shaft 30 have.

2 to 4, the first pumping part 10 provided at one side of the BII DC pump 1 includes a first inlet port 111 for allowing fluid to be sucked into the first pumping part 10, And a first discharge port 112 for discharging the sucked fluid to the outside. The first housing 110 is provided with a second body 220, which will be described later, A first main body 120 coupled to a center portion of the shaft 30 in a state of being in contact with each other is coupled to the first main body 120 and a first pumping portion 10 between the first housing 110 and the first main body 120, A first impeller 130 rotatably coupled to one end of the shaft 30 is installed in the inner space of the shaft 30.

The first impeller 130 is provided with a first impeller body 131 as shown in FIGS. 4 to 7, and the first impeller body 131 is attached to the outer surface of the first impeller body 131, A plurality of first vanes 132 for pushing the fluid to discharge the fluid are coupled to the first impeller body 131. The first impeller body 131 interacts with a driving coil 410 of a driving driver device 40 A first fixed yoke 133 and a first driving magnet 134 for rotating the first impeller 130 are installed and the first impeller main body 131 is provided with a first fixed yoke 133 and a second driving magnet 134 between the first and second main bodies 120 and 220 The first suspension magnet 135 and the first suspension magnet 135 are coupled to each other with a polarity different from that of the fixed side suspension magnet 500. The first impeller body 131 is coupled to the rear side of the first impeller body 131, So that each component in the first impeller 130 does not escape to the outside Group is a first sealing cap 136 combine to seal the inside of the first impeller (130).

In the first impeller body 131 of the first impeller 130, the load fluctuation of the first impeller 130, which is generated by the suction amount of the fluid irregularly sucked into the first pumping part 10, A first negative pressure canceling flow path 137 is formed to introduce a fluid into the first impeller main body 131 so as to cancel the negative pressure to prevent the levitation force that the first impeller 130 is drawn toward the first suction port 111 .

2 to 4, the second pumping unit 20 provided on the other side of the BII DC pump 1 includes a second suction port 211 for allowing fluid to be sucked into the second pumping unit 20, And a second discharge port 212 for discharging the sucked fluid to the outside are formed in the second housing 210. The second housing 210 is formed with a first main body 120, A second body 220 coupled to a center portion of the shaft 30 in a state of being coupled to the first body 210 and a second body 220 coupled to the second body 210. In the second pumping portion 20 between the second body 210 and the second body 220, And a second impeller 230 rotatably coupled to the other end of the shaft 30 is installed in the space.

4 to 7, a second impeller body 231 is installed on the second impeller 230, and an outer surface of the second impeller body 231 is inserted into the second pumping portion 20 A plurality of second blades 232 for pushing the fluid to eject the fluid are coupled to the second impeller body 231. The second impeller body 231 is coupled to the driving coil 410 of the driving driver device 40 A second fixed yoke 233 and a second driving magnet 234 are provided to rotate the second impeller 230 and the second impeller body 231 is provided with a first magnet 234 and a second magnet 234 between the first and second bodies 120 and 220 And a second suspension magnet 235 facing the fixed side suspension magnet 500 with different polarities is coupled to the second impeller body 231. The inside of the second impeller body 231 is connected to the rear side of the second impeller body 231 So that each component in the second impeller 230 does not escape to the outside Group is a second sealing cap 236 combine to seal the inside of the second impeller (230).

The second impeller body 231 of the second impeller 230 is provided with a second impeller 230 for reducing the load fluctuation of the second impeller 230, which is generated by the suction amount of the fluid irregularly sucked into the second pumping portion 20, A second negative pressure cancellation flow path 237 is formed to introduce a fluid into the second impeller body 231 and to cancel the negative pressure in order to prevent the levitation force that the impeller 230 is drawn toward the second suction port 211 .

The first housing 110 of the first pumping unit 10 and the second housing 210 of the first main body 120 and the first pumping unit 20 and the second main body 220 are fastened with the fastening bolts b, And the first housing 110 and the first body 120 are closely contacted with each other between the first housing 110 and the first body 120 of the first pumping portion 10, And the second housing 210 is provided between the second housing 210 and the second body 220 of the second pumping portion 20. The second housing 210 is provided with a hermetic O- And the second pump 220 are tightly coupled to each other to prevent the generation of gaps.

8, the fluid discharged through the second discharge port 212 of the second pumping unit 20 may be supplied to the first pumping unit 210 through the first pumping unit 212, Is discharged to the outside through the first discharge port (112) of the first pumping part (10) by being sucked into the first pumping part (10) through the first suction port (111) The second discharge port 212 of the second pumping portion 20 and the first suction port 111 of the first pumping portion 10 are connected to each other so that the pumping efficiency of the pump can be increased And a connection pipe 50 is connected to the connection pipe.

The connection pipe 50 may be connected to the first pumping portion 112 of the first pumping portion 10 or the second pumping portion 211 of the second pumping portion 20 This is for the purpose of enabling connection and coupling in various structures according to the purpose, effect, manufacturing conditions and buyer's requirements of the BI Dish Pump 1 having a bi-directional pumping structure.

In the present invention configured as described above, current is supplied to the driving coil 410 of the driving driver device 40 when the power of the BI Dish Pump 1 is applied to the first and second pumping parts 10 and 20, And the first and second driving magnets 134 and 234 provided on one surface of the first and second fixed yokes 133 and 233 of the first and second impellers 130 and 230 rotatably coupled to both ends of the first and second fixed yokes 30, As the electromagnetic force is generated, the first and second impellers 130 and 230 are rotated about the shaft 30, respectively.

The first housing 110 of the first pumping portion 10 and the first housing 120 of the first pumping portion 10 are connected to each other by the rotating first impeller 130 through the first suction port 111 of the first pumping portion 10, The fluid is sucked into the internal space formed at one side of the BII DC pump 1 formed by the second impeller 230 and the fluid is sucked by the rotating second impeller 230 through the second suction port 211 of the second pumping part 20, The fluid is sucked into the internal space formed on the other side of the PDS pump 1 formed by the second housing 210 of the pumping section 20 and the second main body 220.

Each of the fluids sucked into the first and the pumping portions 10 is separated from the first pumping portion 10 by a plurality of vanes 132 formed on the outer surface of the first impeller body 131 of the rotating first impeller 130, And each of the fluids sucked into the second pumping portion 20 is supplied to a plurality of vanes 232 formed on the outer surface of the second impeller body 231 of the rotating second impeller 230, To the second discharge port (212) of the second pumping portion (20).

At this time, a fixed side suspension magnet 500 is installed between the first and second bodies 120 and 220, and the first and second suspension magnets 135 and 235 are fixed to the first and second impellers 130 and 230 by the fixed side suspension magnets 500 The first and second suspension magnets 135 and 235 are urged by the repulsive force generated between the fixed-side suspension magnet 500 and the first and second suspension magnets 135 and 235, The first and second main bodies 130 and 230 are not in contact with the first and second main bodies 120 and 220, that is, they rotate while maintaining a constant interval so that interference does not occur.

The first and second negative pressure cancellation passages 137 and 237 are formed in the first and second impellers 130 and 230 so that the fluid flows along the first and second negative pressure cancellation passages 137 and 237 to the first and second impellers 130,230 of the first and second impellers 130 and 230 and the negative pressure generated by the irregularly sucked fluids are canceled to prevent the first and second impellers 130 and 230 from being attracted to the first and second suction ports 111 and 211, The impellers 130 and 230 are smoothly rotated without shaking.

The fluid sucked through each of the suction ports 111 and 211 by the rotation of the first and second impellers 130 and 230 is sent to the discharge ports 112 and 212 and discharged to the outside of the PDP 1 through the discharge ports 112 and 212 And the first and second pumping units 10 and 20 provided on both sides of the BIE DC pump 1 perform pumping operations in both directions of the BIE DC pump 1.

Although the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments and drawings, It should not be understood individually from the technical idea or viewpoint of the present invention.

1: BiDi Pump 10: First pumping portion
20: second pumping section 30: shaft
40: Driving driver device 50: Connector
110, 210: first and second housings 111, 211: first and second inlets
112, 212: first and second discharge ports 120, 220:
130, 230: first and second impellers 131, 231: first and second impeller bodies
132, 232: first and second blades 133, 233: first and second fixed yokes
134,234: first and second drive magnets 135, 235: first and second suspension magnets
136,236: first and second sealing caps 137, 237: first and second negative pressure canceling channels
138,238 First and second O-rings 301: Bushing
302: washer 410: drive coil
500: Fixed side suspension magnet

Claims (8)

1. A BD pump for pumping a fluid for sucking and sucking fluid so as to change direction and discharge it to the outside,
The first and second pumping portions each having an inner space formed therein for separating and forming the inside of the BIST pump and sucking and discharging the fluid into the separately formed inside, The first and second impellers are rotatably coupled to both ends of the shaft. The first and second impellers are rotatably coupled to the first and second pumping parts, respectively. Lt; / RTI >
The first pumping unit provided at one side of the BI PD pump includes a first housing having a first suction port and a first discharge port, a first body coupled to the first housing and having a shaft coupled to a central portion thereof, And a first impeller rotatably coupled to one end of the shaft so as to be positioned between the housing and the first body, the first impeller having a first fixed yoke and a first driving magnet interacting with a driving coil of the driving driver device,
The second pumping unit provided on the other side of the BI DS pump includes a second housing formed with a second suction port and a second discharge port, a second body coupled to the second housing and having a shaft coupled to a center portion thereof, And a second impeller rotatably coupled to the other end of the shaft so as to be positioned between the housing and the second body and having a second fixed yoke and a second drive magnet interacting with the drive coils of the drive driver device. BiDiSi pump with pumping structure. delete The method according to claim 1,
The first impeller includes a first impeller body, a plurality of first blades coupled to an outer surface of the first impeller body, and a second impeller body installed in the first impeller body, A first suspension magnet facing the fixed side suspension magnet coupled to the first and second main bodies, the first and second fixed magnets being coupled to the first impeller body and having different polarities; 1) a first sealing cap which is coupled to the back surface of the impeller body and seals the inside of the first impeller body,
The second impeller includes a second impeller body, a plurality of second blades coupled to the outer surface of the second impeller body, and a plurality of second blades mounted on the first impeller body, A second suspension magnet which is coupled to the second impeller body and faces the fixed side suspension magnet coupled to the first and second bodies at different polarities; And a second sealing cap coupled to a back surface of the impeller body to seal the interior of the second impeller body. The method of claim 3,
The first impeller body of the first impeller is provided with a first negative pressure canceling flow path for canceling a negative pressure while introducing a fluid into the first impeller body to prevent a levitation force that the first impeller is attracted toward the first suction port side,
The first impeller body of the second impeller is formed with a second negative pressure cancellation passage for allowing the negative pressure to be canceled while the fluid is introduced into the second impeller body to prevent the second impeller from being attracted to the second suction port side. The bi-directional pumping structure. The method according to claim 1,
Wherein a sealed O-ring is provided between the first housing and the first body of the first pumping portion and between the second housing and the second body of the second pumping portion, respectively. The method according to claim 1,
Wherein a bushing is coupled to the outer surface of the shaft to engage the first and second bodies without the shaft flowing, and the bushing is formed of a ceramic. delete The method according to claim 1,
Wherein a connection pipe is coupled to a suction port of the first pumping unit and a discharge port of the second pumping unit to cause the fluid discharged through the discharge port of the second pumping unit to be sucked into the first pumping unit through the suction port of the first pumping unit. / RTI >
KR20140058103A 2014-05-15 2014-05-15 blush less direct current pump having two-way pumping structure KR101483013B1 (en)

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KR20140058103A KR101483013B1 (en) 2014-05-15 2014-05-15 blush less direct current pump having two-way pumping structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230001070U (en) 2021-11-19 2023-05-26 채인수 Diaphragm Operated Drain Pump Unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011501028A (en) * 2007-10-18 2011-01-06 ザ クリーブランド クリニック ファウンデーション Two-stage turbo blood pump
KR20110045557A (en) * 2009-10-27 2011-05-04 김정문 Blush less direct current pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011501028A (en) * 2007-10-18 2011-01-06 ザ クリーブランド クリニック ファウンデーション Two-stage turbo blood pump
KR20110045557A (en) * 2009-10-27 2011-05-04 김정문 Blush less direct current pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230001070U (en) 2021-11-19 2023-05-26 채인수 Diaphragm Operated Drain Pump Unit

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