CN209494723U - Pump installation - Google Patents
Pump installation Download PDFInfo
- Publication number
- CN209494723U CN209494723U CN201920143591.6U CN201920143591U CN209494723U CN 209494723 U CN209494723 U CN 209494723U CN 201920143591 U CN201920143591 U CN 201920143591U CN 209494723 U CN209494723 U CN 209494723U
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- China
- Prior art keywords
- rotor
- hole
- wall part
- face
- impeller
- Prior art date
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- Withdrawn - After Issue
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Classifications
-
- 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
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Even if providing a kind of motor for using outer-rotor type as driving source, it is also easy the pump installation from pump chamber discharge air.In pump installation (1), the next door (9a) being configured between rotor (6) and impeller (3) and stator (7) has the peripheral side for being configured at stator (7) and drives the ring bulkhead portion (9f) of one end of the outside wall part (9d) of the inner circumferential side of magnet (16), the inside wall part (9e) for the inner circumferential side for being configured at stator (7), one end of connection outside wall part (9d) and inside wall part (9e).The through hole (3d) Chong Die with outboard end (9p) in ring bulkhead portion (9f) radially of rotor (6) and Chong Die with inner end (9r) in ring bulkhead portion (9f) radially of rotor (6) through hole (3e) when from the end on observation of Pivot axle (18) when the blade forming portion (3b) of the impeller (3) opposed with ring bulkhead portion (9f) is formed with from the end on observation of Pivot axle (18).
Description
Technical field
The utility model relates to have the pump installation of motor and the impeller rotated by the power of motor.
Background technique
At present it is known that there is the impeller for having motor with rotor and stator and being rotated by the power of motor
Pump installation (for example, referring to patent document 1).In pump installation described in Patent Document 1, impeller, rotor and stator and matched
It is placed in the inside for the shell being made of the top upper casing of the shell of a part for constituting motor and covering shell.The shape on upper casing
At the suction inlet and ejiction opening for having liquid.It is formed between shell and upper casing logical from the liquid that suction inlet sucks towards ejiction opening
The pump chamber crossed.
In pump installation described in Patent Document 1, rotor has driving magnet, and driving magnet configuration is in stator
Side.That is, the motor of pump installation described in Patent Document 1 is the motor of inner-rotor type.Impeller is fixed on the upper end of rotor
Side.Rotor and impeller are configured at the inside of pump chamber, and stator arrangement is in the outside of pump chamber.Shell has partition wall member and covering next door
The resin seal component of the resin of the lower surface and side of component, the partition wall member have with by rotor and impeller and stator every
The mode opened is configured at the next door between rotor and impeller and stator.
In pump installation described in Patent Document 1, a part of pump chamber delimited in next door.Next door be formed as it is flanged substantially
Bottomed cylindrical, the bottom for having the lower end of the cylindrical portion, closed circular canister portion that are formed as cylindric, the upper end direction from cylindrical portion
The flange part of radial outside extension.Rotor and impeller are configured at the inner circumferential side of cylindrical portion and the upside of flange part, stator arrangement in
The peripheral side of cylindrical portion and the downside of flange part.The inner circumferential side of cylindrical portion and the upside of flange part are pump chamber.
In addition, in pump installation described in Patent Document 1, when airtrapping is in pump chamber, spray volume or ejection pressure etc.
The characteristic of pump installation may be decreased or generate big noise.Therefore, in pump installation described in Patent Document 1, in general,
It is exhausted using rotating, impeller before pump installation etc..In motor described in Patent Document 1, because of the cylinder in next door
The inner circumferential side in portion and the upside of flange part are pump chamber, so air relatively easily can be discharged from pump chamber.
In addition, at present it is known that having the brushless motor for having rotor and stator (for example, referring to patent document 2).In patent
In the brushless motor that document 2 is recorded, rotor has the driving magnet for the peripheral side for being configured at stator.That is, patent document 2 is remembered
The brushless motor of load is the motor of outer-rotor type.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2017-216759 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2006-74864 bulletin
Utility model content
Present inventor is inquired into using construction of the motor of outer-rotor type as the pump installation of driving source.
In this case, the driving magnet configuration of rotor will be constituted in the peripheral side of stator, by the rotation as the rotation center of rotor
Axis and fixing axle are configured at the inner circumferential side of stator, therefore, as the next door being configured between rotor and impeller and stator, in addition to special
Except cylindrical portion, bottom and flange part that the next door that sharp document 1 is recorded has, it is also necessary to be connected with the outer circumference end of flange part and
It is configured at the wall part of the peripheral side of the peripheral side of stator.In addition, in this case, being formed in the wall part and driving use of peripheral side
Space between magnet also becomes a part of pump chamber.
But shown in addition to the inner circumferential side of cylindrical portion and the upside of flange part according to the discussion of present inventor, shape
When also becoming a part of pump chamber at the space between the wall part of peripheral side and driving magnet, carry out impeller rotation
When the exhaust of pump chamber, the air lodged between rotor and impeller and next door is not easy to be discharged.That is, according to the spy of present inventor
It begs for and shows when the motor for using outer-rotor type is as driving source, air is not easy to be discharged from pump chamber.
Therefore, it is the technical issues of the utility model, uses the motor of outer-rotor type as drive even if providing one kind
Dynamic source, the pump installation that air also can easily be discharged from pump chamber.
Technical solution used by solving the problems, such as
In order to solve the above-mentioned technical problem, the utility model provides a kind of pump installation, has: the electricity with rotor and stator
Motivation and the impeller for being fixed on rotor and being rotated by the power of motor, rotor and impeller are configured at from suction inlet and suck
The inside of pump chamber that passes through towards ejiction opening of liquid, for stator arrangement in the outside of pump chamber, motor has next door, the next door
A part of pump chamber delimited, and be configured between rotor and impeller and stator, rotor and impeller and stator separated, rotor tool
The cylindric magnet maintaining part of driving magnet is fixed for the driving magnet for the peripheral side for being configured at stator and in inner peripheral surface
Part is formed as the axis of the axial direction and the Pivot axle as rotor and the rotation center of impeller of cylindric Magnet retaining element
To consistent, the axial side of rotation center is being set as first direction, the opposite direction of first direction is set as second party
Xiang Shi, impeller have the circle at the first direction end be fixed on the first direction end of Magnet retaining element and close Magnet retaining element
The blade forming portion of plate and first direction side from blade forming portion towards first direction side multiple blade parts outstanding, every
Wall has: being configured at the outside wall part of the tubular of the peripheral side of stator and the inner circumferential side of driving magnet, is configured at stator
The first direction end of the inside wall part of the tubular of inner circumferential side, the first direction end of connection outside wall part and inside wall part is simultaneously
And the cricoid ring bulkhead portion opposed with the face of second direction side of blade forming portion, it is formed in blade forming portion: first
Through hole, when from the end on observation of Pivot axle, the ring bulkhead portion radially of first through hole and rotor
Outboard end overlapping, and penetrate through blade forming portion；Second through hole, when from the end on observation of Pivot axle, described second
The inner end in ring bulkhead portion radially of through hole and rotor is Chong Die, and penetrates through blade forming portion.
In the pump installation of the utility model, the next door being configured between rotor and impeller and stator, which has, is configured at stator
Peripheral side and the outside wall part of the inner circumferential side of driving magnet, be configured at stator inner circumferential side inside wall part, connection
The ring bulkhead portion at the first direction end at the first direction end and inside wall part of outside wall part.In addition, in the utility model
In, be formed in the blade forming portion of the impeller opposed with the face of first direction side in ring bulkhead portion: the first through hole, from
When the end on observation of Pivot axle, the outboard end in ring bulkhead portion radially of first through hole and rotor is Chong Die,
And penetrate through blade forming portion；Second through hole, when from the end on observation of Pivot axle, second through hole and rotor
Ring bulkhead portion radially inner end overlapping, and penetrate through blade forming portion.
Therefore, in the present invention, rotate impeller and when carrying out the exhaust of pump chamber, lodge in driving magnet and
Air between Magnet retaining element and outside wall part and the air lodged between ring bulkhead portion and blade forming portion are easy
It is discharged from the first through hole, and lodges in the air of the inner circumferential side of inside wall part and lodge in ring bulkhead portion and blade is formed
Air between portion is easy to be discharged from the second through hole.That is, in the present invention, because motor is the electronic of outer-rotor type
Machine is easy so lodging between rotor and impeller and next door and being not easy the air being discharged from the first through hole and the second through hole
Discharge.Therefore, in the present invention, even if using the motor of outer-rotor type as driving source, air is also easy from pump chamber
Discharge.
In the present invention, it is generally desirable to, the first direction side of the outer peripheral surface of wall part and ring bulkhead portion on the outside
Face boundary, be formed with connection outside wall part outer peripheral surface and ring bulkhead portion first direction side face convex surface i.e.
The inclined surface in the face of the first direction side of the outer peripheral surface and ring bulkhead portion of outside convex surface or connection outside wall part is outside
Inclined surface, when from the end on observation of Pivot axle, the first through hole and outside convex surface or outer lateral incline in rotor
Radial inner end overlapping.When such constitute, when making impeller rotation carry out the exhaust of pump chamber, driving magnet is lodged in
And the air between Magnet retaining element and outside wall part flows to first readily along outside convex surface or outer lateral incline and passes through
Through-hole side.Therefore, when making impeller rotation carry out the exhaust of pump chamber, driving magnet and Magnet retaining element and outside are lodged in
Air between wall part is easy to be discharged from the first through hole.
In the present invention, it is generally desirable to, in the inner peripheral surface in interior alar septum portion and the first direction side in ring bulkhead portion
Face boundary, be formed with connection inside wall part inner peripheral surface and ring bulkhead portion first direction side face convex surface i.e.
The inclined surface in the face of the first direction side of the inner peripheral surface and ring bulkhead portion of inside convex surface or connection inside wall part is inside
Inclined surface, when from the end on observation of Pivot axle, the second through hole and inside convex surface or interior lateral incline in rotor
Radial outboard end overlapping.When such constitute, when making impeller rotation carry out the exhaust of pump chamber, inside wall part is lodged in
The air of inner circumferential side flow to the second through hole side readily along inside convex surface or interior lateral incline.Therefore, revolve impeller
When rotating into the exhaust of row pump chamber, the air for lodging in the inner circumferential side of inside wall part is easier to be discharged from the second through hole.
In the present invention, it is generally desirable to, multiple blade parts along blade forming portion circumferential array, the first through hole and
Second through hole is respectively formed between the blade part in the circumferential direction of blade forming portion.When such constitute, lodge in rotor and
Between impeller and next door and the air being discharged is not easy more easily from multiple first through holes and the discharge of multiple second through holes.
In the present invention, it is generally desirable to, Pivot axle is to rotatably support the fixing axle of impeller, and impeller has
The cylindric bearing portion of Pivot axle is inserted, the end face of the first direction side of bearing portion is opposed with thrust bearing, in bearing
The end face of the first direction side in portion is formed with connectivity slot, which is connected to from the inner peripheral surface of bearing portion with outer peripheral surface and direction
Second direction side recess.When such constitute, in impeller rotation, liquid is outer by the inner peripheral surface direction of centrifugal force from bearing portion
Circumferential surface is flowed along connectivity slot, therefore, can be utilized and is formed between the outer peripheral surface of Pivot axle and the inner peripheral surface of bearing portion
Minimum gap and be formed in bearing portion first direction side end face connectivity slot, in the second direction of Pivot axle
The flow path of liquid is formed between end side and first direction end side.Therefore, lodge in inside wall part inner circumferential side in rotation
The air of the second direction end side of mandrel is easily drained.
In addition, because the stream of liquid can be formed between the second direction end side and first direction end side of Pivot axle
Road, so the film of liquid can be formed between the outer peripheral surface of Pivot axle and the inner peripheral surface of bearing portion.Therefore, it is able to suppress
The abrasion of the inner peripheral surface of the abrasion and bearing portion of Pivot axle.In addition, because fluid passes through inner circumferential of the centrifugal force from bearing portion
Flowed facing towards outer peripheral surface along connectivity slot, thus can between the end face and thrust bearing of the first direction side of bearing portion shape
At the film of liquid.Therefore, the abrasion of the end face of the first direction side of bearing portion and the abrasion of thrust bearing are able to suppress.
In the present invention, it is generally desirable to, multiple protrusions are formed on the face of the second direction side of blade forming portion
Portion, multiple protrusions are configured at the inner circumferential side of Magnet retaining element, and prominent to second direction side and with driving magnet
The end face of first direction side contacts.When such constitute, the protrusion for being formed in blade forming portion is able to use in rotation center
Locating driver magnet in the axial direction of axis.Prevent blade forming portion relative to Magnet retaining element in addition, being able to use protrusion
Rotation (that is, the rotation of impeller relative to Magnet retaining element).
In the present invention, it is generally desirable to, annular shape is formed on the face of the second direction side of blade forming portion
Cyclic lug, cyclic lug are configured at the inner circumferential side of Magnet retaining element, and prominent to second direction side.When such structure
Cheng Shi, for example, the peripheral side by the inner circumferential side and cyclic lug that are coated on Magnet retaining element bonding agent to magnet
In the case where the first direction end fixed blade forming portion of holding member, it can prevent bonding agent from flowing into ring by cyclic lug
The inner circumferential side of shape protruding portion.Therefore, it can prevent bonding agent from flowing between ring bulkhead portion and blade forming portion, can prevent from gluing
Connect the generation of the unfavorable condition of pump installation caused by agent.
Utility model effect
As described above, in the pump installation of the utility model, it is empty even if using the motor of outer-rotor type as driving source
Gas also can easily be discharged from pump chamber.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the pump installation of the utility model embodiment.
Fig. 2 is the perspective view of motor case shown in FIG. 1.
Fig. 3 is the perspective view of impeller shown in FIG. 1.
Fig. 4 is the perspective view for indicating impeller shown in Fig. 3 the other way around.
Fig. 5 is that impeller shown in FIG. 1 and driving magnet are extracted the perspective view indicated.
Fig. 6 is that impeller shown in FIG. 1 and Magnet retaining element are extracted the perspective view indicated.
Description of symbols
1: pump installation
2: motor
3: impeller
3a: bearing portion
3b: blade forming portion
3c: blade part
3d: through hole (the first through hole)
3e: through hole (the second through hole)
3f: connectivity slot
3g: cyclic lug
3h: protrusion
6: rotor
7: stator
9a: next door
9d: outside wall part
9e: inside wall part
9f: ring bulkhead portion
9j: outer lateral incline
9k: interior lateral incline
9p: the outboard end in ring bulkhead portion
9r: the inner end in ring bulkhead portion
10a: suction inlet
10b: ejiction opening
11: pump chamber
16: magnet is used in driving
17: Magnet retaining element
18: fixing axle (Pivot axle)
20: thrust bearing
Z: the axial direction of Pivot axle
Z1: second direction
Z2: first direction
Specific embodiment
Hereinafter, illustrating the embodiments of the present invention referring to attached drawing.
(overall structure of pump installation)
Fig. 1 is the cross-sectional view of the pump installation 1 of the utility model embodiment.In the following description, by the Z-direction of Fig. 1
It is set as " up and down direction ".In addition, side, that is, Fig. 1 Z1 direction side of up and down direction is set as "upper" side, by its opposite side, that is, Fig. 1
Z2 direction side be set as "lower" side.
The pump installation 1 of the method is known as the centrifugal pump of the type of closed pump (closed electric pump).Pump installation 1 has
Standby motor 2, the impeller 3 rotated by the power of motor 2, the circuit substrate 4 for controlling motor 2.Motor 2
It is direct current (DC) brushless motor.Motor 2 has rotor 6 and stator 7.Impeller 3, rotor 6 and stator 7 are accommodated in pump case 8.
Pump case 8 is made of the shell 10 for constituting the motor case 9 of a part of motor 2, the lower end side for being fixed on motor case 9.
It is formed with the suction inlet 10a of the liquid such as water and the ejiction opening 10b of liquid on the housing 10.In the inside shape of pump case 8
The pump chamber 11 that the liquid of Cheng Youcong suction inlet 10a sucking passes through towards ejiction opening 10b.Pump chamber 11 is by motor case 9 and shell 10
It delimit.In the bonding part of motor case 9 and shell 10 configured with the cricoid sealing for ensuring the airtightness of pump chamber 11
Part 12.Seal member 12 is o-ring.Motor case 9 and shell 10 are fixed to each other by multiple screws 13.
Rotor 6 has the driving magnet 16 for being formed as cylindric and the cylindric magnet of fixed driving magnet 16 is protected
Hold component 17.Be formed as the Magnet retaining element 17 of cylindrical shape with the axial direction of Magnet retaining element 17 and the consistent side of up and down direction
Formula configuration.Driving magnet 16 is fixed on the inner peripheral surface of Magnet retaining element 17.Specifically, driving magnet 16 is fixed on magnetic
The upper end side of the inner peripheral surface of iron holding member 17.In the up-down direction, the upper end of driving magnet 16 and Magnet retaining element 17
Upper end it is consistent.In the driving inner peripheral surface of magnet 16, alternating magnetization has the pole N and the pole S in the circumferential.
Magnet retaining element 17 is formed by soft-magnetic body.Impeller 3 is fixed in the lower end of Magnet retaining element 17.That is, leaf
Wheel 3 is fixed on rotor 6.The annular shape of the radial inside bending towards rotor 6 is formed in the lower end of Magnet retaining element 17
Bending part 17a.Bending part 17a is formed as the tabular orthogonal with up and down direction.
Impeller 3 and rotor 6 are configured in the inside of pump chamber 11.In addition, impeller 3 and rotor 6 are rotatably supported in fixation
Axis 18.That is, motor 2 has the fixing axle 18 for rotatably supporting impeller 3 and rotor 6.Impeller 3 and rotor 6 are with fixing axle 18
It is rotated for rotation center.The fixing axle 18 of the method is the Pivot axle of the rotation center as impeller 3 and rotor 6.
Fixing axle 18 configures in such a way that the axial direction of fixing axle 18 and up and down direction are consistent.That is, up and down direction (Z-direction) is
The axial direction of fixing axle 18, the axial direction for being formed as cylindric Magnet retaining element 17 are axial consistent with fixing axle 18.In addition, this
The lower direction (direction Z2) of mode is an axial side i.e. first direction of fixing axle 18, and upper direction (direction Z1) is first direction
Opposite direction, that is, second direction.
Impeller 3 is formed by resin.Impeller 3 has the bearing portion 3a of insert fixing axle 18.Bearing portion 3a is formed as cylindric,
In the inner circumferential side of bearing portion 3a, insert has fixing axle 18.That is, fixing axle 18 rotatably supports impeller 3.The lower end of fixing axle 18
Portion is held in shell 10, and the upper end of fixing axle 18 is held in motor case 9.It is configured with and pushes away between shell 10 and bearing portion 3a
Power bearing 20 is configured with thrust bearing 21 between motor case 9 and bearing portion 3a.Thrust bearing 20,21 is created as plate
The sliding bearing of shape.It is described later on the specific structure of impeller 3.
Stator 7 is configured at the inner circumferential side of driving magnet 16.That is, the motor 2 of the method is one for constituting rotor 6
The driving magnet 16 divided is configured at the motor of the outer-rotor type of the peripheral side of stator 7.In addition, stator 7 is configured at fixing axle
The peripheral side of 18 and bearing portion 3a.In addition, stator 7 is configured at the outside of pump chamber 11.Stator 7 has multiple 23 Hes of driving coil
Stator core material 24.Driving is with coil 23 via the insulator 25 formed by insulating materials such as resins wound on stator core material 24
On.In addition, driving coil 23 is electrically connected with circuit substrate 4.Circuit substrate 4 and stator core material 24 are fixed on motor case 9.This
Outside, circuit substrate 4 and stator 7 are covered by sealing resin.
As described above, motor case 9 constitutes a part of motor 2.That is, motor 2 has motor case 9.Motor
Shell 9 is formed by resin.Motor case 9, which has, to be configured between impeller 3 and rotor 6 and stator 7 and by impeller 3 and rotor 6 and calmly
The next door 9a that son 7 separates.Next door 9a delimit a part of pump chamber 11, and playing prevents the liquid in pump chamber 11 from flowing into stator 7 and electricity
The effect at the configuration position of base board 4.It is described later on the specific structure of motor case 9.
Shell 10 is formed by resin.Shell 10 is formed as tubular with the end, has canister portion 10c and the closing for being formed as tubular
The bottom 10d of one end of canister portion 10c.The axial direction for being formed as the canister portion 10c of tubular is consistent with up and down direction.Bottom 10d closes cylinder
The lower end of portion 10c.The inner circumferential side of canister portion 10c and the upside of bottom 10d are pump chamber 11.It is formed on the housing 10 and is kept fixed axis
The axis maintaining part 10e of 18 lower end, front end form the cylindric suction inlet forming portion 10f of suction inlet 10a, front end forms spray
Export the cylindric ejiction opening forming portion 10g of 10b.
Axis maintaining part 10e is connected via linking part 10h with the central part of bottom 10d.Axis maintaining part 10e is kept fixed axis 18
Lower end, and keep thrust bearing 20.The downward side in the center of suction inlet forming portion 10f from bottom 10d is prominent.Spray the degree of lip-rounding
It is prominent from the outer peripheral surface of canister portion 10c towards peripheral side at portion 10g.
(structure of motor case and impeller)
Fig. 2 is the perspective view of motor case 9 shown in FIG. 1.Fig. 3 is the perspective view of impeller 3 shown in FIG. 1.Fig. 4 is from phase
Opposite direction indicates the perspective view of impeller 3 shown in Fig. 3.Fig. 5 is to indicate impeller 3 shown in FIG. 1 and the extraction of driving magnet 16
Perspective view.Fig. 6 is the perspective view for indicating impeller 3 shown in FIG. 1 and the extraction of Magnet retaining element 17.
Motor case 9 is also equipped with the periphery cylinder for being configured at the tubular of peripheral side of next door 9a in addition to above-mentioned next door 9a
The interconnecting piece 9c of portion 9b and connection next door 9a and periphery canister portion 9b.Next door 9a has the peripheral side for being configured at stator 7 and driving is used
The inside wall part 9e of the outside wall part 9d of the tubular of the inner circumferential side of magnet 16 and the tubular for the inner circumferential side for being configured at stator 7.
Outside wall part 9d and inside wall part 9e is formed as cylindric, and is configured to the same heart shaped centered on fixing axle 18.Separately
Outside, next door 9a have the lower end of connection outside wall part 9d and the lower end of inside wall part 9e cricoid ring bulkhead portion 9f,
With the bottom 9g of the upper end of closing inside wall part 9e.
Shell 10 is fixed on the lower end side of periphery canister portion 9b.Interconnecting piece 9c is formed as circular, and be formed as with up and down
The orthogonal tabular in direction.Radial outer expandable of the interconnecting piece 9c from the upper end of outside wall part 9d to rotor 6, by periphery cylinder
The upper end of portion 9b is connected with the upper end of outside wall part 9d.It is formed in the upper surface of interconnecting piece 9c for by circuit substrate 4
The multiple protrusion 9h for positioning and being fixed.Inside wall part 9e is configured at the peripheral side of fixing axle 18 and bearing portion 3a.Bottom
Portion 9g is to maintain the axis maintaining part of the upper end of fixing axle 18.Bottom 9g is kept fixed the upper end of axis 18, and keeps thrust
Bearing 21.
Ring bulkhead portion 9f is formed as circular, also, is formed as the tabular orthogonal with up and down direction.In outer alar septum
The boundary of the lower surface of the outer peripheral surface and ring bulkhead portion 9f of portion 9d is formed with the outer peripheral surface and ring-type of connection outside wall part 9d
The inclined surface of the lower surface of wall part 9f is outer lateral incline 9j.That is, the outer peripheral surface of wall part 9d and ring bulkhead portion on the outside
The boundary of the lower surface of 9f is formed with by the more inclined circle then more in a manner of being directed towards the radial inside of rotor 6 towards downside
Pyramidal outer lateral incline (chamfering) 9j.The tilt angle of outer lateral incline 9j is, for example, 45 °.In this mode, rotor 6
The inner end of outer lateral incline 9j radially of the outboard end 9p of ring bulkhead portion 9f radially and rotor 6 is consistent.
In addition, being formed in connection on the boundary of the lower surface of the inner peripheral surface and ring bulkhead portion 9f of interior alar septum portion 9e
The i.e. interior lateral incline 9k in the inclined surface of the lower surface of the inner peripheral surface and ring bulkhead portion 9f of alar septum portion 9e.That is, in interior alar septum
The boundary of the lower surface of the inner peripheral surface and ring bulkhead portion 9f of portion 9e is formed with more then more to be directed towards rotor 6 towards downside
Interior lateral incline (chamfering) 9k of the inclined circular cone shape of mode in radial outside.The tilt angle of interior lateral incline 9k is for example
It is 45 °.In this mode, the interior inclination radially of the inner end 9r and rotor 6 of the ring bulkhead portion 9f radially of rotor 6
The outboard end of inclined-plane 9k is consistent.
Impeller 3 is also equipped in addition to above-mentioned bearing portion 3a to be fixed on the lower end of Magnet retaining element 17 and closes magnet guarantor
Hold the disk-shaped blade forming portion 3b of the lower end of component 17 and the downward pleurapophysis in lower surface from blade forming portion 3b go out it is multiple
Blade part 3c.The impeller 3 of the method for example has 5 blade part 3c.5 blade part 3c in the circumferential direction of blade forming portion 3b with
Arranged at equal intervals.Blade forming portion 3b is configured in such a way that the thickness direction of blade forming portion 3b and up and down direction are consistent.In magnetic
The lower end of iron holding member 17 is fixed with the periphery side section of blade forming portion 3b.The upper surface of blade forming portion 3b and it is cyclic annular every
The lower surface of wall portion 9f is opposed.That is, ring bulkhead portion 9f is opposed with the upper surface of blade forming portion 3b.
Through hole 3d and the conduct of the first through hole as perforation blade forming portion 3b are formed in blade forming portion 3b
Penetrate through the through hole 3e of the second through hole of blade forming portion 3b.Through hole 3d, 3e are circular holes.In this mode, in blade-shaped
At the multiple through hole 3d for being formed with the annular shape being arranged in centered on fixing axle 18 on portion 3b and it is arranged in fixing axle 18
Centered on circular multiple through hole 3e.In addition, in this mode, 5 through holes are formed on blade forming portion 3b
3d and 5 through hole 3e.Through hole 3d is formed in the periphery side section of blade forming portion 3b, radial direction of the through hole 3e in rotor 6
On be formed in than through hole 3d in the inner part.In addition, through hole 3d and through hole 3e are respectively formed in the Zhou Fang of blade forming portion 3b
Between upward blade part 3c.Equiangularly pitch is formed by through hole 3d, 3e.
Outboard end 9p weight of through hole 3d when from up and down direction, with the ring bulkhead portion 9f radially of rotor 6
Folded (referring to Fig.1).That is, radial inside in rotor 6 of through hole 3d when from up and down direction, with outer lateral incline 9j
End overlapping.Through hole 3e is Chong Die with the inner end 9r of ring bulkhead portion 9f radially of rotor 6 when from up and down direction
(referring to Fig.1).That is, radial outboard end in rotor 6 of through hole 3e when from up and down direction, with interior lateral incline 9k
Overlapping.
Bearing portion 3a is connected with the center of blade forming portion 3b.The majority of bearing portion 3a is upper from blade forming portion 3b's
Surface is prominent.In addition, the lower end surface of bearing portion 3a is configured at the lower surface than blade forming portion 3b slightly by downside.It is formed from blade
The majority of the upper surface of portion 3b bearing portion 3a outstanding is configured at the inner circumferential side of inside wall part 9e.The lower end of bearing portion 3a
Face is opposed with thrust bearing 20, and the upper surface of bearing portion 3a is opposed with thrust bearing 21.Thrust bearing 20 and bearing portion 3a it
Between and either one between thrust bearing 21 and bearing portion 3a be formed with gap (thrust clearance).In addition, being filled in transfer tube
When setting 1, thrust bearing 20 and bearing portion 3a contact form thrust clearance between thrust bearing 21 and bearing portion 3a.
As shown in figure 3, being formed with the company being connected to from the inner peripheral surface of bearing portion 3a with outer peripheral surface in the lower end surface of bearing portion 3a
Through slot 3f.Connectivity slot 3f is recessed from the lower end surface of bearing portion 3a towards upside.In addition, connectivity slot 3f is formed as the diameter along rotor 6
To the linear of stretching.The narrower width of connectivity slot 3f.In this mode, it is formed with 180 ° of pitches in the lower end surface of bearing portion 3a
There are two connectivity slot 3f.
As shown in figure 4, being formed with upwardly projecting circular cyclic lug in the upper surface of blade forming portion 3b
3g and upwardly projecting multiple protrusion 3h.Cyclic lug 3g is configured to the annular shape centered on fixing axle 18.It is cyclic annular
Protruding portion 3g is formed in the periphery side section of the upper surface of blade forming portion 3b.In addition, cyclic lug 3g is configured at than rotor 6
Ring bulkhead portion 9f radially outboard end 9p in the outer part.In addition, as shown in Figure 1, the lower surface of ring bulkhead portion 9f
It is configured at upper surface than cyclic lug 3g on the lower.
Protrusion 3h is formed as semi-cylindrical, and the upper surface of protrusion 3h is the plane orthogonal with up and down direction.In we
In formula, 90 ° of pitches centered on fixing axle 18 are formed with protrusion 3h at four positions.The height of protrusion 3h is higher than
The height of cyclic lug 3g.Protrusion 3h is formed in a manner of the periphery face contact with cyclic lug 3g, prominent from ring-type
The outer peripheral surface of portion 3g is bloated to outer peripheral side with semi-cylindrical.As shown in figure 5, the upper surface of protrusion 3h and driving magnet 16
Lower end face contact.
As shown in fig. 6, cyclic lug 3g and protrusion 3h are configured at the inner circumferential side of the lower end of Magnet retaining element 17.
As shown in Figure 1, being formed in the lower surface of the bending part 17a of the lower end of Magnet retaining element 17 and the upper surface of blade forming portion 3b
, the part contact of more outer than cyclic lug 3g side.In addition, the inner peripheral surface of bending part 17a and cyclic lug 3g's is outer
All face contacts.The recess portion (illustration omitted) of the semicircle shape for protrusion 3h insertion is formed in the inner peripheral surface of bending part 17a.This is recessed
Portion is recessed from the inner circumferential of bending part 17a towards the radial outside of rotor 6.
As described above, the periphery side section of blade forming portion 3b is fixed on the lower end of Magnet retaining element 17.It is specific and
Speech, the periphery side section of blade forming portion 3b is by being coated on the bonding agent of the upper surface of bending part 17a (that is, being coated on magnet
Bonding agent between the inner peripheral surface and cyclic lug 3g of the lower end side of holding member 17) it is fixed under Magnet retaining element 17
End.In addition, in this mode, impeller 3 is fixed on after Magnet retaining element 17, driving magnet 16 is fixed in magnet guarantor
Hold component 17.
(main effect of the method)
As mentioned above, in this mode, when from up and down direction, it is formed in the through hole of blade forming portion 3b
The outboard end 9p of ring bulkhead portion 9f radially of 3d and rotor 6 is Chong Die, through hole 3e and rotor 6 radially it is cyclic annular every
The inner end 9r of wall portion 9f is overlapped.Therefore, in this mode, when making the rotation of impeller 3 carry out the exhaust of pump chamber 11, drive is lodged in
It employs the air between magnet 16 and Magnet retaining element 17 and outside wall part 9d and lodges in ring bulkhead portion 9f and blade
Air between forming portion 3b is easy to be discharged from through hole 3d, and lodges in air and the accumulation of the inner circumferential side of inside wall part 9e
Air between ring bulkhead portion 9f and blade forming portion 3b is easy to be discharged from through hole 3e.That is, in this mode, because electric
Motivation 2 is the motor of outer-rotor type, so lodging between rotor 6 and impeller 3 and next door 9a and being not easy the air being discharged appearance
Easily it is discharged from through hole 3d, 3e.Therefore, in this mode, even if using the motor 2 of outer-rotor type as driving source, air
Also it is easy to be discharged from pump chamber 11.
In particular, in this mode, through hole 3d, 3e be formed in each blade part 3c in the circumferential direction of blade forming portion 3b it
Between, therefore, lodges between rotor 6 and impeller 3 and next door 9a and be not easy the air being discharged and be easy to arrange from multiple through hole 3d, 3e
Out.Therefore, in this mode, even if using the motor 2 of outer-rotor type as driving source, air is also easier to from 11 row of pump chamber
Out.
In this mode, the boundary of the lower surface of the outer peripheral surface of wall part 9d and ring bulkhead portion 9f on the outside, is formed with
The outer lateral incline 9j of the lower surface of the outer peripheral surface and ring bulkhead portion 9f of connection outside wall part 9d, from up and down direction
When, through hole 3d is Chong Die with the radial inner end in rotor 6 of outer lateral incline 9j.Therefore, in this mode, make impeller
When 3 rotations carry out the exhaust of pump chamber 11, lodge between driving magnet 16 and Magnet retaining element 17 and outside wall part 9d
Air flow to the side through hole 3d readily along outer lateral incline 9j.Therefore, in this mode, pump the rotation of impeller 3
When the exhaust of room 11, it is easier to the sky between driving magnet 16 and Magnet retaining element 17 and outside wall part 9d will be lodged in
Gas is discharged from through hole 3d.
In this mode, it on the boundary of the lower surface of the inner peripheral surface of interior alar septum portion 9e and ring bulkhead portion 9f, is formed with
The interior lateral incline 9k of the lower surface of the inner peripheral surface and ring bulkhead portion 9f of connection inside wall part 9e, from up and down direction
When, through hole 3e is Chong Die with the radial outboard end in rotor 6 of interior lateral incline 9k.Therefore, in this mode, make impeller
3 rotations and when carrying out the exhaust of pump chamber 11, lodge in the air of the inner circumferential side of inside wall part 9e readily along interior lateral incline
9k flows to the side through hole 3e.Therefore, in this mode, when making the rotation of impeller 3 carry out the exhaust of pump chamber 11, medial septal is lodged in
The air of the inner circumferential side of wall portion 9e is easier to be discharged from through hole 3e.
In this mode, it is formed in the lower end surface of bearing portion 3a and leads to the connection of outer peripheral surface from the inner peripheral surface of bearing portion 3a
Slot 3f.Therefore, in this mode, when impeller 3 rotates, liquid is by centrifugal force from the inner peripheral surface of bearing portion 3a towards outer peripheral surface
It is flowed along connectivity slot 3f.Therefore, in this mode, the interior of the outer peripheral surface and bearing portion 3a for being formed in fixing axle 18 can be utilized
Minimum gap between circumferential surface and be formed in bearing portion 3a lower end surface connectivity slot 3f, fixing axle 18 upper end side under
The flow path of liquid is formed between end side.As a result, in this mode, accumulating in the inner circumferential side of inside wall part 9e, fixing axle
The air of 18 upper end side is easily drained.
In addition, in this mode, the flow path of liquid can be formed between the upper end side and lower end side of fixing axle 18, because
This, can form the film of liquid between the outer peripheral surface of fixing axle 18 and the inner peripheral surface of bearing portion 3a.Therefore, in this mode,
It can inhibit the abrasion of the abrasion of fixing axle 18 and the inner peripheral surface of bearing portion 3a.In addition, in this mode because liquid by from
Mental and physical efforts from the inner peripheral surface of bearing portion 3a towards outer peripheral surface along connectivity slot 3f flow, it is possible to bearing portion 3a lower end surface and
The film of liquid is formed between thrust bearing 20.Therefore, in this mode, it is able to suppress the abrasion of the lower end surface of bearing portion 3a and pushes away
The abrasion of power bearing 20.
In this mode, it is formed in the upper surface of blade forming portion 3b more with the lower end face contact of driving magnet 16
A protrusion 3h.Therefore, in this mode, to when securing the fixed driving magnet 16 of the Magnet retaining element 17 after impeller 3,
Protrusion 3h is able to use in the up-down direction to position driving magnet 16.In addition, in this mode, in Magnet retaining element
The inner peripheral surface of 17 bending part 17a is formed with the recess portion of semicircle shape for protrusion 3h insertion and is therefore able to use protrusion 3h
To prevent blade forming portion 3b relative to the rotation of Magnet retaining element 17 (that is, impeller 3 turns relative to Magnet retaining element 17
It is dynamic).
In this mode, it is formed in the upper surface of blade forming portion and is configured at the circle of the inner circumferential side of Magnet retaining element 17
Cricoid cyclic lug 3g.Therefore, in this mode, the upper surface by being coated on bending part 17a bonding agent to magnetic
When the periphery side section of the lower end fixed blade forming portion 3b of iron holding member 17, it can prevent from being bonded by cyclic lug 3g
The inner circumferential side of agent inflow cyclic lug 3g.Therefore, in this mode, it can prevent bonding agent from flowing into ring bulkhead portion 9f and leaf
Between piece forming portion 3b, as a result, it is possible to prevent the undesirable generation of pump installation 1 caused by bonding agent.
(other embodiment)
Above-mentioned mode is an example of the best mode of the utility model, but not limited to this, do not changing the utility model
Objective in the range of can carry out various modifications implementation.
In above-mentioned mode, can also the lower surface of the outer peripheral surface of wall part 9d and ring bulkhead portion 9f on the outside side
It is outside convex surface that boundary, which forms the outer peripheral surface of connection outside wall part 9d and the convex surface of the lower surface of ring bulkhead portion 9f, and generation
For outer lateral incline 9j.In this case, when from up and down direction, the diameter in rotor 6 of through hole 3d and outside convex surface
To inner end be overlapped.In this case, make impeller 3 rotation carry out pump chamber 11 exhaust when, lodge in driving magnet 16 and
Air between Magnet retaining element 17 and outside wall part 9d also flows to the side through hole 3d readily along outside convex surface.
In addition, in above-mentioned mode, it can also be in the inner peripheral surface of interior alar septum portion 9e and the following table of ring bulkhead portion 9f
It is inside evagination that the boundary in face, which forms the inner peripheral surface of connection inside wall part 9e and the convex surface of the lower surface of ring bulkhead portion 9f,
Face, and replace interior lateral incline 9k.In this case, through hole 3e is turning with inside convex surface when from up and down direction
The radial outboard end overlapping of son 6.In this case, lodging in inside next door when making the rotation of impeller 3 carry out the exhaust of pump chamber 11
The air of the inner circumferential side of portion 9e also flows to the side through hole 3e readily along inside convex surface.
In above-mentioned mode, can also the lower surface of the outer peripheral surface of wall part 9d and ring bulkhead portion 9f on the outside side
Boundary forms outer lateral incline 9j.In this case, through hole 3d is Chong Die with outside wall part 9d when from up and down direction.It should
In the case of, it rotates impeller 3 when carrying out the exhaust of pump chamber 11, is lodging in 17 He of driving magnet 16 and Magnet retaining element
Air between the wall part 9d of outside and the air lodged between ring bulkhead portion 9f and blade forming portion 3b are also easy from passing through
Through-hole 3d discharge.
In addition, in above-mentioned mode, it can not also be under the inner peripheral surface and ring bulkhead portion 9f of interior alar septum portion 9e
Lateral incline 9k in being formed between surface.In this case, when from up and down direction, through hole 3e and inside wall part 9e weight
It is folded.In this case, lodging in the air of the inner circumferential side of inside wall part 9e when making the rotation of impeller 3 carry out the exhaust of pump chamber 11
And the air lodged between ring bulkhead portion 9f and blade forming portion 3b is also easy to be discharged from through hole 3e.
In above-mentioned mode, motor 2 can also have the rotary shaft of fixed impeller 3 and replace fixing axle 18.The feelings
Rotary shaft under condition is the Pivot axle of the rotation center as impeller 3 and rotor 6.In addition, in above-mentioned mode, it can also
With by insert part forming that impeller 3 and Magnet retaining element 17 is integrated.In addition, being formed in blade-shaped in above-mentioned mode
It can be one at the quantity of the through hole 3d of portion 3b, and the quantity for being formed in the through hole 3e of blade forming portion 3b is also possible to
One.
Claims (10)
1. a kind of pump installation, which is characterized in that
Have: there is the motor of rotor and stator and be fixed on the rotor and rotated by the power of the motor
Impeller,
The rotor and the impeller are configured at the inside of the pump chamber passed through from the liquid that suction inlet sucks towards ejiction opening,
The stator arrangement in the outside of the pump chamber,
The motor has next door, and a part of the pump chamber delimited in the next door, and is configured at the rotor and described
Between impeller and the stator, the rotor and the impeller and the stator are separated,
The rotor has the driving magnet for the peripheral side for being configured at the stator and fixes the driving magnetic in inner peripheral surface
The cylindric Magnet retaining element of iron,
Be formed as the axial direction of the cylindric Magnet retaining element and as the rotation center of the rotor and the impeller
The axial direction of Pivot axle is consistent,
The axial side of the rotation center is being set as first direction, the opposite direction of first direction is set as second party
Xiang Shi,
The impeller have the first direction end for being fixed on the Magnet retaining element and close the Magnet retaining element
The disk-shaped blade forming portion in one direction end and from the first direction side of the blade forming portion towards first direction pleurapophysis
Multiple blade parts out,
The next door has: being configured at the lateral septal of the tubular of the peripheral side of the stator and the inner circumferential side of the driving magnet
The first direction end of wall portion, the inside wall part of tubular of inner circumferential side for being configured at the stator, the connection outside wall part
With the first direction end of the inside wall part and opposed with the face of second direction side of the blade forming portion cricoid
Ring bulkhead portion,
It is formed in the blade forming portion: the first through hole, when from the end on observation of the Pivot axle, described first
The outboard end in the ring bulkhead portion radially of through hole and the rotor is Chong Die, and penetrates through the blade forming portion；
Second through hole, when from the end on observation of the Pivot axle, second through hole and the rotor radially
The inner end in the ring bulkhead portion is overlapped, and penetrates through the blade forming portion.
2. pump installation according to claim 1, which is characterized in that
On the boundary in the face of the first direction side of the outer peripheral surface and ring bulkhead portion of the outside wall part, it is formed with connection
The convex surface in the face of the first direction side in the outer peripheral surface of the outside wall part and the ring bulkhead portion be outside convex surface or
Connect the i.e. outside inclination in inclined surface in the face of the outer peripheral surface of the outside wall part and the first direction side in the ring bulkhead portion
Face,
When from the end on observation of the Pivot axle, first through hole and the outside convex surface or the outer inclination
The radial inner end in the rotor on inclined-plane is overlapped.
3. pump installation according to claim 2, which is characterized in that
On the boundary in the face of the first direction side of the inner peripheral surface and ring bulkhead portion of the inside wall part, it is formed with connection
The convex surface in the face of the first direction side in the inner peripheral surface of the inside wall part and the ring bulkhead portion be inside convex surface or
Connect the i.e. inside inclination in inclined surface in the face of the inner peripheral surface of the inside wall part and the first direction side in the ring bulkhead portion
Face,
When from the end on observation of the Pivot axle, second through hole and the inside convex surface or the interior inclination
The radial outboard end overlapping in the rotor on inclined-plane.
4. pump installation according to claim 3, which is characterized in that
Multiple blade parts along the blade forming portion circumferential array,
First through hole and second through hole are respectively formed in the blade in the circumferential direction of the blade forming portion
Between portion.
5. pump installation according to claim 1, which is characterized in that
On the boundary in the face of the first direction side of the inner peripheral surface and ring bulkhead portion of the inside wall part, it is formed with connection
The convex surface in the face of the first direction side in the inner peripheral surface of the inside wall part and the ring bulkhead portion be inside convex surface or
Connect the i.e. inside inclination in inclined surface in the face of the inner peripheral surface of the inside wall part and the first direction side in the ring bulkhead portion
Face,
When from the end on observation of the Pivot axle, second through hole and the inside convex surface or the interior inclination
The radial outboard end overlapping in the rotor on inclined-plane.
6. pump installation according to claim 5, which is characterized in that
Multiple blade parts along the blade forming portion circumferential array,
First through hole and second through hole are respectively formed in the blade in the circumferential direction of the blade forming portion
Between portion.
7. pump installation according to claim 1, which is characterized in that
Multiple blade parts along the blade forming portion circumferential array,
First through hole and second through hole are respectively formed in the blade in the circumferential direction of the blade forming portion
Between portion.
8. pump installation according to claim 1, which is characterized in that
The Pivot axle is to rotatably support the fixing axle of the impeller,
The impeller has the cylindric bearing portion of the insert Pivot axle,
The end face of the first direction side of the bearing portion is opposed with thrust bearing,
Connectivity slot, inner peripheral surface of the connectivity slot from the bearing portion are formed in the end face of the first direction side of the bearing portion
It is connected to outer peripheral surface and is recessed towards second direction side.
9. pump installation according to claim 1, which is characterized in that
On the face of the second direction side of the blade forming portion, multiple protrusions are formed with, the multiple protrusion is configured at
The inner circumferential side of the Magnet retaining element, and it is prominent to second direction side and with the first direction side of the driving magnet
End face contact.
10. pump installation according to claim 1, which is characterized in that
On the face of the second direction side of the blade forming portion, it is formed with circular cyclic lug, it is described cyclic annular prominent
Portion is configured at the inner circumferential side of the Magnet retaining element, and prominent to second direction side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-023704 | 2018-02-14 | ||
| JP2018023704A JP7048341B2 (en) | 2018-02-14 | 2018-02-14 | Pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209494723U true CN209494723U (en) | 2019-10-15 |
Family
ID=67645311
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910080053.1A Active CN110159544B (en) | 2018-02-14 | 2019-01-28 | Pump device |
| CN201920143591.6U Withdrawn - After Issue CN209494723U (en) | 2018-02-14 | 2019-01-28 | Pump installation |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910080053.1A Active CN110159544B (en) | 2018-02-14 | 2019-01-28 | Pump device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7048341B2 (en) |
| CN (2) | CN110159544B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159544A (en) * | 2018-02-14 | 2019-08-23 | 日本电产三协株式会社 | Pump installation |
| CN114320937A (en) * | 2020-10-09 | 2022-04-12 | 日本电产三协株式会社 | Pump device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7373327B2 (en) | 2019-09-10 | 2023-11-02 | ニデックインスツルメンツ株式会社 | pump equipment |
| JP2022020102A (en) * | 2020-07-20 | 2022-02-01 | 日本電産サンキョー株式会社 | Pump device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331789A (en) * | 1997-06-03 | 1998-12-15 | Tec Corp | Motor-driven pump |
| JP2006283682A (en) * | 2005-04-01 | 2006-10-19 | Kps Kogyo Kk | Dc motor pump and jet bath |
| JP2007285217A (en) * | 2006-04-18 | 2007-11-01 | Matsushita Electric Works Ltd | Pump and liquid supply device |
| JP2008057484A (en) * | 2006-09-01 | 2008-03-13 | Nippon Keiki Works Ltd | Impeller for centrifugal pump and centrifugal pump using the same |
| JP4858329B2 (en) * | 2007-06-21 | 2012-01-18 | パナソニック電工株式会社 | Centrifugal pump and liquid supply apparatus provided with the same |
| JP2008163952A (en) * | 2008-03-06 | 2008-07-17 | Sanyo Denki Co Ltd | Electric pump |
| JP2011153549A (en) * | 2010-01-26 | 2011-08-11 | Nidec Sankyo Corp | Pump device |
| CN102155432A (en) * | 2010-02-11 | 2011-08-17 | 浙江三花股份有限公司 | Liquid drainage device |
| JP7048341B2 (en) * | 2018-02-14 | 2022-04-05 | 日本電産サンキョー株式会社 | Pump device |
-
2018
- 2018-02-14 JP JP2018023704A patent/JP7048341B2/en active Active
-
2019
- 2019-01-28 CN CN201910080053.1A patent/CN110159544B/en active Active
- 2019-01-28 CN CN201920143591.6U patent/CN209494723U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159544A (en) * | 2018-02-14 | 2019-08-23 | 日本电产三协株式会社 | Pump installation |
| CN114320937A (en) * | 2020-10-09 | 2022-04-12 | 日本电产三协株式会社 | Pump device |
| CN114320937B (en) * | 2020-10-09 | 2023-10-20 | 日本电产三协株式会社 | Pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019138254A (en) | 2019-08-22 |
| CN110159544B (en) | 2021-02-09 |
| JP7048341B2 (en) | 2022-04-05 |
| CN110159544A (en) | 2019-08-23 |
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