CN101900123A - Fluidic device and pump device - Google Patents
Fluidic device and pump device Download PDFInfo
- Publication number
- CN101900123A CN101900123A CN201010183653XA CN201010183653A CN101900123A CN 101900123 A CN101900123 A CN 101900123A CN 201010183653X A CN201010183653X A CN 201010183653XA CN 201010183653 A CN201010183653 A CN 201010183653A CN 101900123 A CN101900123 A CN 101900123A
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- China
- Prior art keywords
- rotating shaft
- next door
- outer circumferential
- annulus
- impeller body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 68
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 230000035515 penetration Effects 0.000 claims description 33
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000002955 isolation Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 229920003266 Leaf® Polymers 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 241000219739 Lens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 210000000695 crystalline len Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- OCNVVYBTRKWBCO-JUZPTULESA-N petrosin Chemical compound C([C@@H]1CCCN2C[C@@H](C([C@H]([C@H]21)CCCCC1)=O)C)CCCC[C@@H]2C(=O)[C@@H](C)CN3CCC[C@@H]1[C@@H]32 OCNVVYBTRKWBCO-JUZPTULESA-N 0.000 description 1
- OCNVVYBTRKWBCO-UHFFFAOYSA-N petrosin-B Natural products C1CCCCC(C23)C(=O)C(C)CN2CCCC3CCCCCC2C(=O)C(C)CN3CCCC1C32 OCNVVYBTRKWBCO-UHFFFAOYSA-N 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- -1 polyethylene terephthalates Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
Provided is a fluidic device of a pump device or a waterpower device, capable of ensuring high liquid sealability and air sealability even that a through hole is formed on a bulkhead component arranged between an electromagnetic part and a fluid chamber. In the pump device (100), a holding component (5) of a plurality of fixing components (11) is provided with a barrel part (51) for accepting a sealing component, the barrel part (51) is provided with an annular space (80) between the bulkhead component (4) and a peripheral surface of a rotating shaft (7) on the side of an engine part (2), the annular space (80) is provided with a first annular sealing component (8) contacting with the peripheral surface of the rotating shaft (7) and an inner circumferential surface of the barrel part (51). Furthermore, a second annular sealing component (91) is arranged between the bulkhead component (4) and the holding component (5) on the peripheral side of the annular space (80).
Description
Technical field
Thereby the present invention relates to a kind ofly make rotating shaft run through fluid means such as pump-unit that penetration hole that the next door member that is between electromagnetism portion and the fluid chamber forms and impeller body link or hydroelectric installation from electromagnetism portion.
Background technique
As pump-unit, proposed that shaft of motor is run through and be in motor part (electromagnetism portion) and pump chamber (fluid chamber) thus between the next door member on the pump-unit that links of the penetration hole that forms and impeller body, in the said pump device, generally speaking for be pressed into the structure of the end of rotating shaft in cylindrical part in the binding that is formed at impeller body.In addition, in pump-unit, in order to prevent that the liquid by pump chamber from leaking to the motor part side via the penetration hole of next door member, and can not invade pump chamber via the penetration hole of next door member for bubble, take in annular seal members (with reference to patent documentation 1, patent documentation 2) such as being provided with oil sealing in the annulus that constitutes with tube portion with cylindrical part and the sealing component of being located at the next door member by the binding that is formed at impeller body from the motor part side.
Patent documentation 1: the Japan Patent spy opens the 2000-213491 communique
Patent documentation 2: the Japan Patent spy opens the 2009-59549 communique
Yet, as the structure that patent documentation 1, patent documentation 2 are put down in writing, the binding that is formed at impeller body with cylindrical part around be provided with in the structure of annular seal member, exist close property of liquid and tightness to hang down such problem.That is,,, can make impeller body produce the rotation runout, make close property of liquid and tightness reduction therefore because of the error of above-mentioned linking portion etc. because impeller body and rotating shaft link.In addition, when cylindrical part was used in the binding that rotating shaft is pressed into impeller body, binding produced distortion slightly with cylindrical part, and the out of roughness reduction, the close property of liquid and the tightness that link the outer circumferential face of using cylindrical part are reduced.Same problem also occurs at hydroelectric installation.
Summary of the invention
Based on the problems referred to above,, problem of the present invention also can guarantee close property of high liquid and fluid means such as bubble-tight pump-unit or hydroelectric installation even being to provide under a kind of situation about penetration hole being formed on the next door member that is clipped between portion of mechanism and the fluid chamber.
In order to solve the problems of the technologies described above, in the present invention, have: electromagnetism portion, this electromagnetism portion disposes rotor and stator coil; Fluid chamber, this fluid chamber disposes impeller body; And a plurality of fixed components, this fixed component comprises the next door member that is clipped between above-mentioned fluid chamber and the above-mentioned electromagnetism portion, thereby rotating shaft runs through the penetration hole that is formed at above-mentioned next door member from above-mentioned electromagnetism portion and links with above-mentioned impeller body, it is characterized in that, any one fixed component in above-mentioned a plurality of fixed component is formed with sealing component and takes in tube portion, the sealing member is taken in tube portion and constitute annulus between the outer circumferential face of the above-mentioned rotating shaft of above-mentioned next door member and above-mentioned electromagnetism portion present position side, above-mentioned annulus is provided with the first annular seal member, and this first annular seal member contacts with the inner peripheral surface that above-mentioned sealing component is taken in tube portion with the outer circumferential face of above-mentioned rotating shaft.
In the present invention, fluid means is pump-unit or hydroelectric installation.When fluid means was hydroelectric installation, impeller body was the generating impeller.In addition, when fluid means was pump-unit, impeller body was centrifugal type impeller body, axial flow type impeller body etc., was " have and be used for the turning of blade that convection cell brings energy "
In the present invention, thereby rotating shaft is run through from electromagnetism portion be formed at the penetration hole and impeller body binding that is clipped between electromagnetism portion and the fluid chamber, when fluid means was pump-unit, rotating shaft was in case rotation, impeller body in fluid chamber also rotates, and carries out suction and the discharge of fluid in fluid chamber.In addition, when fluid means was hydroelectric installation, if make the impeller rotation by the fluid that flows through fluid chamber, thereby then the rotating shaft rotation was generated electricity.At this, any one fixed component in a plurality of fixed components is formed with sealing component and takes in tube portion, the sealing member is taken between the outer circumferential face with the rotating shaft of tube portion next door member and electromagnetism portion present position side and is constituted annulus, above-mentioned annulus is provided with the first annular seal member, and this first annular seal member contacts with the inner peripheral surface that sealing component is taken in tube portion with the outer circumferential face of rotating shaft.Therefore, can not only prevent that fluid from leaking the side to electromagnetism portion from fluid chamber through the outer circumferential face of rotating shaft, can also prevent that bubble is from the outer circumferential face intrusion fluid chamber of electromagnetism portion side through rotating shaft.Particularly in the present invention, therefore different with the impeller body contacting structure owing to the first annular seal member directly contacts with the outer circumferential face of rotating shaft with the first annular seal member, the same core degree height of the first annular seal member and rotating shaft.Because therefore close property of liquid and tightness height can not only prevent reliably that fluid from leaking the side to electromagnetism portion from fluid chamber through the outer circumferential face of rotating shaft, can also prevent reliably that bubble is from the outer circumferential face intrusion fluid chamber of electromagnetism portion side through rotating shaft.
In the present invention, comparatively it is desirable to, the above-mentioned sealing component that is formed with in above-mentioned a plurality of fixed components is taken in the retaining member that is kept for the outer circumferential face to the radial bearing that supports above-mentioned rotating shaft with the fixed component of tube portion.If adopt said structure, then because the outer circumferential face of the first annular seal member and radial bearing all are held the member maintenance, thereby sealing component is taken in the same core degree height with tube portion and rotating shaft, therefore can realize the high state of same core degree of the first annular seal member and rotating shaft reliably.
In the present invention, comparatively it is desirable to, the outer circumferential side of above-mentioned annulus accompanies the second annular seal member between above-mentioned next door member and above-mentioned retaining member.If adopt said structure, can not only prevent that then fluid from draining to the outside from fluid chamber between next door member and retaining member, can also prevent that bubble from invading fluid chamber from the outside between next door member and retaining member.
In the present invention, comparatively it is desirable to, the internal diameter size of above-mentioned penetration hole is taken in the internal diameter size of tube portion little than above-mentioned sealing component, is roughly sealed by above-mentioned next door member at the opening of the member present position, above-mentioned next door of above-mentioned annulus side.If adopt said structure, then can prevent of the skew of the first annular seal member towards fluid chamber's side by the next door member.
In the present invention, comparatively it is desirable to, above-mentioned retaining member is taken in above-mentioned motor part side with tube portion at above-mentioned sealing component and is had to take in to take in all inwardly side-prominent sealing components of tube portion from above-mentioned sealed member and use stepped part.If adopt said structure, then can prevent of the skew of the first annular seal member towards motor side by retaining member.
In the present invention, comparatively it is desirable to, the above-mentioned first annular seal member has: outer circumferential side annulus portion, and this outer circumferential side annulus portion takes in tube portion with above-mentioned sealing component and contacts; In all side annulus portion, all side annulus portion contacts with above-mentioned rotating shaft in this; And linking department, this linking department with above-mentioned outer circumferential side annulus portion and above-mentioned in all side annulus portion link, above-mentioned next door member has towards the outstanding circular protrusion of above-mentioned linking department.If adopt said structure, then the linking department by making the first annular seal member and the circular protrusion butt of next door member can prevent the skew of the first annular seal member towards fluid chamber's side.Therefore, do not act on unwanted power in outer circumferential side annulus portion and the interior all side annulus portion, sealing is reduced.
In the present invention, can adopt above-mentioned fluid chamber present position side in the member of above-mentioned next door to be provided with the structure of thrust carrier, this thrust carrier and above-mentioned impeller body direct or by slide member (for example thrust washer) thus butt limits above-mentioned impeller body and the above-mentioned rotating shaft displacement to above-mentioned electromagnetism portion side.According to said structure and since the thrust portion of accepting be positioned at the motor rotation axis line near, therefore have in the little advantage of the slip loss of thrust carrier.
In the present invention, comparatively it is desirable to, above-mentioned impeller body comprises a plurality of intra vanes that are radial extension in the face side relative with above-mentioned next door member, and this intra vane extends towards radial outside from the outer periphery of the annular section relative with above-mentioned thrust carrier at above-mentioned impeller body.If adopt said structure, then can suppress foreign matter and invade between the inner surface side and next door member of impeller body.In addition, owing to can will form negative pressure near the penetration hole,, also can suppress liquid and leak to electromagnetism portion from fluid chamber even therefore the sealability of the first annular seal member reduces.
In the present invention, comparatively it is desirable to, the end of the above-mentioned electromagnetism portion that the is positioned at side of above-mentioned rotating shaft links metal rotor housing, this rotor housing is included in base plate relative with the said stator coil on the axial direction, is stained with insulating trip on the face relative with the said stator coil of above-mentioned base plate.If this structure, then owing between stator coil and rotor, be provided with first isolation layer and second isolation layer, wherein above-mentioned first isolation layer is made of the air layer that is clipped in stator coil and adhere between the insulating trip of rotor housing, above-mentioned second isolation layer is made of insulating trip, so good insulation preformance.And, according to above-mentioned insulation system,, therefore be suitable for realizing the miniaturization of fluid means owing to can be located at the interior narrow and small slit of fluid means.
Among the present invention, any one fixed component in a plurality of fixed components is formed with sealing component and takes in tube portion, the sealing member is taken between the outer circumferential face with the rotating shaft of tube portion next door member and electromagnetism portion present position side and is constituted annulus, above-mentioned annulus is provided with the first annular seal member, and this first annular seal member contacts with the inner peripheral surface that sealing component is taken in tube portion with the outer circumferential face of rotating shaft.Therefore, can not only prevent that fluid from leaking the side to electromagnetism portion from fluid chamber through the outer circumferential face of rotating shaft, can also prevent that bubble is from the outer circumferential face intrusion fluid chamber of electromagnetism portion side through rotating shaft.Particularly in the present invention, because the first annular seal member directly contacts with the outer circumferential face of rotating shaft, therefore different with the impeller body contacting structure with the first annular seal member, the same core degree of the first annular seal member and rotating shaft is very high all the time.Because therefore close property of liquid and tightness height can not only prevent reliably that fluid from leaking the side to electromagnetism portion from fluid chamber through the outer circumferential face of rotating shaft, can also prevent reliably that bubble is from the outer circumferential face intrusion fluid chamber of electromagnetism portion side through rotating shaft.
Description of drawings
Fig. 1 (a), Fig. 1 (b) are the plan view and the A-A ' sectional views of the pump-unit of embodiment of the present invention.
Fig. 2 is the sectional view that the major component of the pump-unit of embodiment of the present invention is amplified the back expression.
Fig. 3 is the sectional view of the next door member that pump-unit adopted of embodiment of the present invention and the sectional view of retaining member.
Fig. 4 is the explanatory drawing of the impeller body that pump-unit adopted of embodiment of the present invention.
(symbol description)
1 pump chamber (fluid chamber)
2 motor part (electromagnetism portion)
3 pump case (fixed component)
4 next door members (fixed component)
5 retaining members (fixed component)
6 impeller bodies
7 rotating shafts
8 first annular seal members
11 fixed components
21 rotor housings
22 rotor magnets
23 insulating trips
24,25 radial bearings
26 stator cores
27 stator coils
40 penetration holes
48 thrust carriers
51 sealing components are taken in tube portion
61 outer leafs
66 intra vanes
65 binding cylindrical part
69 thrust washers (slide member)
80 annuluses
91 second annular seal members
100 pump-units (fluid means)
Embodiment
Below, describe being used to implement embodiments of the present invention with reference to accompanying drawing.Fluid means of the present invention all can be suitable for pump-unit and hydroelectric installation, but following be that the center describes with the example that applies the present invention to pump-unit.
Fig. 1 (a), Fig. 1 (b) are the plan view and the A-A ' sectional views of the pump-unit of embodiment of the present invention.Fig. 2 is the sectional view that the major component of the pump-unit of embodiment of the present invention is amplified the back expression, and Fig. 2 (a) amplifies expression with retaining member and periphery thereof, and Fig. 2 (b) further amplifies expression with the penetration hole and the periphery thereof of next door member.Fig. 3 (a), Fig. 3 (b) are the sectional view of the next door member that pump-unit adopted of embodiment of the present invention and the sectional view of retaining member.
Fig. 1 (a), Fig. 1 (b) and the pump-unit that comprises the centrifugal type impeller body 100 (fluid means) shown in Figure 2 are for example in automatic washing machine the fluid pump of using fluid to be cleaned in washing position pumping, for example, thus make the clean water cycle in the washing tank supply to the washing position.In addition, the pump-unit 100 of present embodiment also can be used as draining pump etc.In the present embodiment, when constituting said pump device 100, as described below, pump and motor are become one structure.
The pump-unit 100 of present embodiment comprises the fixed components 11 such as next door member 4, pump case 3 and retaining member 5 that are located between pump chamber 1 (fluid chamber) and the motor part 2 (electromagnetism portion), one side side by next door member 4 is coated with pump case 3, thereby the one side side of next door member 4 constitutes the pump chamber 1 that comprises impeller body 6.In contrast, the another side side of next door member 4 constitutes the motor part 2 that comprises rotating shaft 7.Next door member 4, pump case 3 and retaining member 5 are resinous, as above-mentioned resin, also can adopt sneak into glass contain composite materials such as glass PP resin.
As Fig. 1 (b) and shown in Figure 2, be formed with penetration hole 40 on the motor axis L of next door member 4, from motor part 2 side-prominent rotating shafts 7 penetration hole 40 is run through back being pressed into impeller body 6 and engage.Therefore, if rotating shaft 7 rotations, then impeller body 6 rotates in pump chamber 1, carries out the suction and the discharge of the fluid in the pump chamber 1.
(structure of pump case 3 and next door member 4)
Shown in Fig. 2 and Fig. 3 (a), pump case 3 comprises: the main body 30 of cup-shaped, and this main body 30 disposes impeller body 6 in the inboard; Suction tube cylindraceous portion 33, this suction tube portion 33 extends along motor axis L direction from the central authorities of the upper bottom portion 36 of aforementioned body part 30; And discharge tube portion 35, this discharge tube portion 35 extends along its tangent direction from the metastomium cylindraceous 37 of main body 30.
Next door member 4 has the cup type shape towards motor part 2 side openings, and it comprises: plate-like body part 41, and this plate-like body part 41 is vertical with the motor axis direction; And side wall portion 49, this side wall portion 49 is edge-on towards motor part 2 from the outer periphery of tabular main body 41.In the next door member 4, the approximate central part branch of plate-like body part 41 comprises towards the outstanding outside cylindrical portion 42 of pump chamber 1, and interior all sides of described outside cylindrical portion 42 are provided with the wall part 47 of middle body towards motor part 2 sides depression.Wall part 47 becomes the radial direction external lateral portion towards the tapering 43 that pump chamber 1 tilts to give prominence to, and the bottom in above-mentioned tapering 43 becomes the base plate 44 with motor axis L-orthogonal.In base plate 44, the outer surface side that is positioned at pump chamber 1 side becomes the low recess of middle section 478, and the middle section of the bottom of recess 478 becomes the recess 479 that caves in lowlyer.
In the wall part 47, motor part 2 residing inner surface side are formed with towards the side-prominent cylindrical part 46 of motor part 2, and cylindrical part 46 and penetration hole 40 are to form with the core shape.On the front end of cylindrical part 46, be formed with two circular step portions in inner surface side.In addition, the inner surface side of wall part 47 is formed with circular protrusion 471 with cylindrical part 46 with the core shape in cylindrical part 46 inboards.Above-mentioned circular protrusion 471 is compared with cylindrical part 46, and outstanding size is very little.
The inner surface side of next door member 4 is formed with towards the side-prominent side plate 411 of motor part 2, to surround the part that is equivalent to wall part 47 at the outer circumferential side of cylindrical part 46.As described later, above-mentioned side plate 411, cylindrical part 46 and side wall portion 49 are used for the location of retaining member 5 etc. when next door member 4 is linked with retaining member 5.
As shown in Figure 2, pump case 3 state in the outside that is embedded in the outside cylindrical portion 42 of next door member 4 with main body 30 combines with next door member 4.The outside of the root portion of outside cylindrical portion 42 is equipped with the O shape circle 92 of close usefulness of liquid and airtight usefulness, and above-mentioned O shape circle 92 is held between the root portion of the stepped part of the distolateral hole enlargement slightly of opening of the cylindric metastomium 37 of the main body 30 of pump case 3 and outside cylindrical portion 42.
(structure of impeller body 6)
Fig. 4 is the explanatory drawing of the impeller body 6 that adopted of the pump-unit 100 of embodiment of the present invention, and Fig. 4 (a), Fig. 4 (b) are the stereogram of the impeller body 6 observed from pump chamber 1 side and the stereogram of observing impeller body 6 from motor part 2 sides.
Shown in Fig. 2 and Fig. 4 (a), Fig. 4 (b), impeller body 6 comprises: plectane portion 60; The binding that the end arranged is with cylindrical part 65, and this links with cylindrical part 65 side-prominent towards pump chamber 1 from the central authorities of above-mentioned plectane portion 60; And five outer leafs 61, this outer leafs 61 plectane portion 60 with edge-on of pump chamber 1 side opposed outer surface, five outer leafs 61 form the equal angles compartment of terrain around linking with cylindrical part 65.
In addition, impeller body 6 comprises: ring-type teat 64, and this ring-type teat 64 is side-prominent towards motor 2 from the central authorities of plectane portion 60 with motor part 2 side interior surface opposing sides plectane portion 60; And ten intra vanes 66, towards 2 edge-on of motor part, ten intra vane 66 equal angles compartment of terrains around ring-type teat 64 form this intra vane 66 around ring-type teat 64.Intra vane 66 extends towards radial outside from the outer periphery of ring-type teat 64, and the radial outside end of intra vane 66 arrives the outer periphery of plectane portion 60.
In the intra vane 66, the size (width dimensions) on the motor axis L direction is big and little at outer circumferential side in the center side of plectane portion 60.Therefore, intra vane 66 its in the end of motor part 2 sides of motor axis direction more towards outer circumferential side more away from motor part 2 sides, intra vane 66 its in the end of motor part 2 sides of motor axis direction more towards center side more near motor part 2 sides.But, the outer surface side of the plate-like body part 41 of next door member 4 is formed with the recess 478 in big footpath, and is formed with the recess 479 of path in the central authorities of recess 478.Therefore, its outer surface side in the plate-like body part 41 of the end of motor part 2 sides of motor axis direction and next door member 4 of intra vane 66 becomes in the shape that radially separates approximately uniform interval.In addition, the outer circumferential side end of interior impeller 66 becomes the conical surface 660 that cuts off contoured obliquely.
(structure of motor part 2)
As shown in Figure 2, the pump-unit 100 of present embodiment comprises retaining member 5 in motor part 2 sides, and retaining member 5 comprises: plate-like body part 56, and this plate-like body part 56 is along expanding with the direction of motor axis L direction quadrature; Bearing holding part 55, this bearing holding part 55 is side-prominent towards motor part 2 present positions from the approximate center of above-mentioned plate-like body part 56.Bearing holding part 55 is formed with the axis hole 57 that runs through for rotating shaft 7, and the internal diameter size of above-mentioned axis hole 57 is bigger slightly than the outside dimension of rotating shaft 7.In the axis hole 57, the two ends of the motor axis L direction of retaining member 5 are formed with a pair of circular step portion 572,573.In the present embodiment, above-mentioned circular step portion 572,573 keeps the outer circumferential face of radial bearing cylindraceous 24,25 that rotating shaft 7 is rotatably mounted.In addition, in the rotating shaft 7, packing ring 77 is installed, thereby the end butt restriction rotating shaft 7 of above-mentioned packing ring 77 and radial bearing 25 is towards pump chamber 1 side displacement with the end of pump chamber 1 present position side opposition side.
In the present embodiment, thereby the inboard that the penetration hole 40 of next door member 4 is pressed into the cylindrical part 65 that is fixed in impeller body 6 is run through in the end 71 of pump chamber 1 side of rotating shaft 7, is embedded in the rotating shaft 7 to be formed with on the end 71 of impeller body 6 to be used to strengthen annular knurl that is pressed into combination etc.
In the retaining member 5, the approximate center of plate-like body part 56 has sealing component cylindraceous to take in tube portion 51 towards pump chamber 1 is side-prominent, above-mentioned sealing component take in tube portion 51 and the outer circumferential face of rotating shaft 7 between formation annulus 80.
In addition, plate-like body part 56 at retaining member 5, the outer circumferential side that sealing component is taken in the root portion of tube portion 51 is formed with circular step portion 59, the inboard embedding mutually of the stepped part of the outer circumferential side in two circular step portions of this circular step portion 59 and the cylindrical part 46 that is formed at next door member 4.And, the outer surface side towards pump chamber 1 side in the plate-like body part 56 of retaining member 5 is formed with stepped part that engages with the side plate 411 that is formed at next door member 4 etc., and retaining member 5 combines with the plate-like body part 41 of next door member 4 separates regulation on motor axis L direction compartment of terrain with the plate-like body part 56 of next door member 4, retaining member 5.
In the retaining member 5, the outer circumferential side of bearing holding part 55 becomes the holding part unshakable in one's determination that keeps stator core 26, is fixed with the folded stator core 26 that forms of many flaggies unshakable in one's determination by bolt 260 on the position of leaving plate-like body part 56 of the outer circumferential side of bearing holding part 55.In addition, in the stator core 26, be extended with a plurality of prominent utmost points towards radial outside, be wound with stator coil 27 around the above-mentioned prominent utmost point from the annulus of inboard.
In the plate-like body part 56 of retaining member 5, stator core 26 present position sides are formed with a plurality of columnar protrusions 561, and the end of above-mentioned columnar protrusions 561 is formed with kick.In the present embodiment, the kick of columnar protrusions 561 is embedded after the hole that is used for the motor base plate 29 of stator coil 27 power supplies, flatten by front end, thereby make motor base plate 29 remain in the front end of columnar protrusions 561 kick.
(structure of rotor)
In the pump-unit 100 of present embodiment, linking with the end of pump chamber 1 present position side opposition side in the rotating shaft 7 has metal rotor housing 21, this rotor housing 21 to be included on the motor axis L direction base plate 218 relative with stator coil 27.In addition, the inner peripheral surface of the cylindric metastomium 219 that erects from the outer periphery of base plate 218 in the rotor housing 21 maintains rotor magnet 22 cylindraceous, and this rotor magnet 22 is relative with stator core 26 at radial outside.
In the motor part 2 of the pump-unit 100 of said structure, consider from the viewpoint that prevents to leak electricity, between stator coil 27 and metal rotating shaft 7, need sufficient insulation.Therefore, in the present embodiment, in the rotor housing 21 on motor axis L direction the base plate 218 relative with stator coil 27 be pasted with insulating trip 23, this insulating trip 23 is by adhesives layer the PET rosin lenss such as (polyethylene terephthalates) that multi-disc has insulating properties to be laminated.Therefore, in the pump-unit 100 of present embodiment, between the base plate 218 of stator coil 27 and rotor housing 21, be provided with first isolation layer and second isolation layer, wherein, above-mentioned first isolation layer is to be made of the air layer that is clipped between the insulating trip 23 that adheres to rotor housing 21, and above-mentioned second isolation layer is to be made of insulating trip 23.
(sealing configurations of pump chamber 1 side and motor part 2 sides)
In the present embodiment, thus the penetration hole 40 of next door member 4 is run through in the end of rotating shaft 7 and impeller body 6 links.Therefore, the liquid of pump chamber 1 penetration hole 40 that may pass the next door leaks to motor part 2 sides.In addition, bubble may invade pump chamber 1 from the penetration hole 40 that motor part 2 sides are passed the next door.
Therefore, in the present embodiment, retaining member 5 is formed with sealing component to be taken in tube portion 51, the sealing member take in tube portion 51 and the outer circumferential face of rotating shaft 7 between formation annulus 80, above-mentioned annulus 80 is provided with the first annular seal member 8.The interior circumferential portion of the first annular seal member 8 contacts with the outer circumferential face of rotating shaft 7, the outer circumferential face of the first annular seal member 8 contacts with the inner peripheral surface that sealing component is taken in tube portion 51, and usefulness stepped part 511 butts are taken in taking in from sealing component with all side-prominent sealing components of the inner peripheral surface of tube portion 51 inwardly in the end of motor part 2 sides of the first annular seal member 8.In the present embodiment, as the first annular seal member 8, employing will be as embedding part and take in the oil sealing with the rubber system that is connected by linking department 83 with interior all side annulus portion 82 of rotating shaft 7 contacts with the outer circumferential side annulus portion 81 of tube portion 51 contacts with sealing component, forms sealed lip 821 and dirt lip 822 circular in interior all side annulus portion 82.In addition, be formed with circular protrusion 831 with next door member 4 opposed outer surface in the linking department 83, above-mentioned circular protrusion 831 and circular protrusion 471 butts that are formed at the inner surface side of next door member 4.
At this, the internal diameter size of penetration hole 40 is bigger slightly than the outside dimension of rotating shaft 7, takes in the internal diameter size of tube portion 51 little a lot than sealing component.Therefore, the opening of annulus 80 median septum members 4 present position sides is roughly sealed by next door member 4.
In addition, in the present embodiment, if retaining member 5 is combined with next door member 4, then sealing component is taken in the slit that is formed with ring-type between the stepped part with the cylindrical part 46 of the outer circumferential side of the root portion of tube portion 51 and next door member 4, disposes the second annular seal member 91 in the slit of ring-type.Promptly, in the present embodiment, when retaining member 5 is combined with next door member 4, take in the outer circumferential side of tube portion 51 at sealing component the second annular seal member 91 is installed, thereby when sealing component 5 combines with sealing component 4, between the inner peripheral surface of the outer circumferential face of sealing component 5 and next door member 4, clip the second annular seal member 91.In the present embodiment, as the second annular seal member 91, adopt the O shape circle of rubber system.
(at the thrust block access node structure of impeller body 6)
In the present embodiment, dispose the first annular seal member 8 for next door member 4 in motor part 2 sides, pump chamber 1 side of leaning on of next door member 4 does not dispose the first annular seal member 8.Therefore, in the present embodiment, in rotating shaft 7 with near the connecting part of impeller body 6, thrust washer 69 as slide member is installed, utilize the annular section relative in the next door member 4, limit impeller body 6 and rotating shaft 7 thrust carrier 48 to the displacement of motor part 2 sides thereby constitute by thrust washer 69 and impeller body 6 butts with thrust washer 69.That is, in the present embodiment, next door member 4 will be used as restriction impeller body 6 and the rotating shaft 7 thrust carrier 48 to the displacement of motor part 2 sides near the edge of opening of penetration hole 40.In addition, according to the material of impeller body 6 and next door member 4, also can omit thrust washer 69, at this moment, thereby thrust carrier of next door member 4 48 and impeller body 6 direct butts restriction impeller bodies 6 and rotating shaft 7 are to the displacement of motor part 2 sides.In addition, also can be with the recess 478 of path as thrust carrier 48.
At this, the outside dimension approximately equal of the outside dimension of thrust washer 69 and thrust carrier 48 and the ring-type teat 64 of impeller body 6.Therefore, intra vane 66 extends towards radial outside from the outer periphery of the annular section relative with thrust carrier 48 in impeller body 6.
(the main effect of present embodiment)
As above-mentioned illustrated, in the pump-unit 100 of present embodiment, in a plurality of fixed components 11, retaining member 5 is formed with sealing component and takes in tube portion 51, the sealing member is taken in formation annulus 80 between the outer circumferential face of the rotating shaft 7 of tube portion's 51 next door members 4 and motor part 2 present position sides, and above-mentioned annulus 80 disposes with the outer circumferential face of rotating shaft 7 and sealing component and takes in the first annular seal member 8 that the inner peripheral surface with tube portion 51 contacts.Therefore, can not only prevent that fluid from leaking to motor 2 sides from the outer circumferential face of pump chamber 1 through rotating shaft 7, can also prevent that bubble is from the outer circumferential face intrusion pump chamber 1 of motor 2 sides through rotating shaft 7.
Particularly in the present embodiment, therefore different with impeller body 6 contacting structure owing to the first annular seal member 8 directly contacts with the outer circumferential face of rotating shaft 7 with the first annular seal member 8, close property of liquid and tightness height.That is,, then exist, when rotating shaft 7 rotations, on impeller body 6, produce the rotation runout, and make close property of liquid and tightness reduce such problem because of the error of rotating shaft 7 with the same core degree of impeller body 6 if make the first annular seal member 8 and impeller body 6 side butts.But in the present embodiment and since the first annular seal member 8 directly with the outer circumferential face butt of rotating shaft 7, between the first annular seal member 8 and rotating shaft 7, keep high same core degree all the time, so the problems referred to above can not occur.In addition, under the situation that in impeller body 6, makes the first annular seal member 8 and the structure of the outer circumferential face butt of the cylindrical part that is pressed into rotating shaft 7, when being pressed into rotating shaft 7, thereby the outer circumferential face that has the cylindrical part of impeller body 6 is out of shape the outer circumferential face of the cylindrical part that makes impeller body 6 and the same core degree of the first annular seal member 8 reduces, make close property of liquid and tightness reduce such problem, and need prevent the metallic sealing component that is out of shape to the peripheral part of impeller body 6, but according to present embodiment, since the first annular seal member 8 directly with the outer circumferential face butt of rotating shaft 7, so the problems referred to above can not appear.
Therefore, because the close property of liquid and the tightness height of the pump-unit 100 of present embodiment, therefore can not only prevent reliably that fluid from leaking to motor 2 sides from the outer circumferential face of pump chamber 1 through rotating shaft 7, can also prevent reliably that bubble is from the outer circumferential face intrusion pump chamber 1 of motor 2 sides through rotating shaft 7.And, because sealing component is taken in the retaining member 5 that is formed at the outer circumferential face of the maintenance radial bearing 24,25 in a plurality of fixed components 11 with tube portion 51, that is to say because the outer circumferential face of the first annular seal member remains in retaining member with the outer circumferential face of radial bearing, so sealing component is taken in the same core degree height with tube portion 51 and rotating shaft 7.Therefore, can realize the high state of same core degree of the first annular seal member 8 and rotating shaft 7 reliably.
In addition, in the present embodiment, at annulus 80 outer circumferential sides, owing to accompany the second annular seal member 91 between next door member 4 and the retaining member 5, therefore can not only prevent that fluid from leaking extremely outside from pump chamber 1 between next door member 4 and retaining member 5, can also prevent that bubble from invading pump chamber 1 from the outside between next door member 4 and retaining member 5.
And the internal diameter size of the penetration hole 40 of next door member 4 is taken in the internal diameter size of tube portion 51 little than sealing component, and the opening of above-mentioned next door member 4 present position sides is roughly sealed by this next door member 4 in the annulus 80.Therefore, can prevent that by next door member 4 the first annular seal member 8 from moving towards pump chamber 1 lateral deviation.
In addition, because the inner circumference edge of the penetration hole 40 of next door member 4 is positioned near the motor axis L, so that and form narrow and small slit between the outer circumferential face of rotating shaft 7, therefore can be provided with thrust carrier 48 in pump chamber 1 present position side in the next door member 4, thereby this thrust carrier 48 passes through the displacement to motor part 2 sides of thrust washer 69 and impeller body 6 butts restriction impeller body 6 and rotating shaft 7.In addition and since thrust carrier 48 be positioned at motor axis L near, therefore have in the little advantage of the slip loss of thrust carrier 48.
And, because impeller body 6 comprises intra vane 66 in the face side relative with next door member 4, therefore can limit foreign matter and invade between the inner surface side and next door member 4 of impeller body 6.In addition, owing to can will form negative pressure near the penetration hole 40, even the therefore first annular seal member, 8 breakages also can suppress liquid and spill from penetration hole 40.In addition, because the outer circumferential side end of intra vane 66 is for cutting off the conical surface of shape obliquely, so foreign matter such as the end of a thread is difficult for being wrapped on the intra vane 66.
In addition, the slit portion of penetration hole 40 and rotating shaft 7 is littler than the intra vane 66 and the slit between the next door member 47 of impeller body 6.Therefore, can prevent reliably that foreign matter from sneaking into the cylindric metastomium 37 (sealing component side) that is provided with sealing component 8.In addition, in self-priming pump, just the pressure in the pump chamber of running back can change, but in the present embodiment, owing on impeller body 6, be provided with intra vane 66, and the internal diameter of penetration hole 40 gap with the external diameter of rotating shaft 7 dwindled, therefore can alleviate pump chamber 1 interior pressure oscillation and involve sealing component 8 sides.Therefore, can be suppressed at leaking of the sealed department place that adopts sealing component 8.
In addition, the end that is positioned at motor part 2 sides in the rotating shaft 7 links metal rotor housing 21, this rotor housing 21 is included on the motor axis L direction base plate 218 relative with stator coil 27, is pasted with insulating trip 23 on the face relative with stator coil 27 of base plate 218.Therefore, in the pump-unit 100 of present embodiment, owing between stator coil 27 and rotating shaft 7, be provided with first isolation layer and second isolation layer, wherein, above-mentioned first isolation layer is to be made of the air layer that is clipped in stator coil 27 and adhere between the insulating trip 23 of rotor housing 21, above-mentioned second isolation layer is to be made of a plurality of insulating trips 23, so good insulation preformance.And, according to above-mentioned insulation system,, therefore be suitable for realizing the miniaturization of pump-unit 100 owing to the narrow and small slit that can be located in the pump-unit 100.
Claims (10)
1. fluid means has: electromagnetism portion, and this electromagnetism portion disposes rotor and stator coil; Fluid chamber, this fluid chamber disposes impeller body; And a plurality of fixed components, this fixed component comprises the next door member that is clipped between described fluid chamber and the described electromagnetism portion, links with described impeller body thereby rotating shaft runs through the penetration hole that is formed at described next door member from described electromagnetism portion, it is characterized in that,
Be formed with sealing component on any one fixed component in described a plurality of fixed component and take in tube portion, the sealing member is taken in tube portion and constitute annulus between the outer circumferential face of the described rotating shaft of described next door member and described electromagnetism portion present position side,
Described annulus is provided with the first annular seal member, and this first annular seal member contacts with the inner peripheral surface that described sealing component is taken in tube portion with the outer circumferential face of described rotating shaft.
2. fluid means as claimed in claim 1 is characterized in that, the described sealing component that is formed with in described a plurality of fixed components is taken in the retaining member that is kept for the outer circumferential face to the radial bearing that supports described rotating shaft with the fixed component of tube portion.
3. fluid means as claimed in claim 2 is characterized in that, the outer circumferential side of described annulus accompanies the second annular seal member between described next door member and described retaining member.
4. fluid means as claimed in claim 2 is characterized in that,
The internal diameter size of described penetration hole is taken in the internal diameter size of tube portion little than described sealing component,
Opening in the member present position, described next door of described annulus side is roughly sealed by described next door member.
5. fluid means as claimed in claim 4 is characterized in that, described retaining member is taken in described motor part side with tube portion at described sealing component and had to take in to take in all inwardly side-prominent sealing components of tube portion from described sealed member and use stepped part.
6. fluid means as claimed in claim 4 is characterized in that,
The described first annular seal member has: outer circumferential side annulus portion, and this outer circumferential side annulus portion takes in tube portion with described sealing component and contacts; In all side annulus portion, all side annulus portion contacts with described rotating shaft in this; And linking department, this linking department with described outer circumferential side annulus portion and described in all side annulus portion link,
Described next door member has towards the outstanding circular protrusion of described linking department.
7. fluid means as claimed in claim 4, it is characterized in that, described fluid chamber present position side in the member of described next door is provided with the thrust carrier, thereby this thrust carrier and described impeller body directly or by the slide member butt limit described impeller body and the described rotating shaft displacement to described electromagnetism portion side.
8. fluid means as claimed in claim 7 is characterized in that,
Described impeller body comprises a plurality of intra vanes that are radial extension in the face side relative with described next door member,
Described intra vane extends towards radial outside from the outer periphery of the annular section relative with described thrust carrier at described impeller body.
9. fluid means as claimed in claim 1 is characterized in that,
There are metal rotor housing, this rotor housing to be included in base plate relative on the axial direction in described rotating shaft the binding with described stator coil with an end described fluid chamber residing side opposition side,
On the face relative of described base plate, be stained with insulating trip with described stator coil.
10. a pump-unit is characterized in that, is made of each described fluid means in the claim 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-130167 | 2009-05-29 | ||
| JP2009130167A JP5410841B2 (en) | 2009-05-29 | 2009-05-29 | Fluid device and pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101900123A true CN101900123A (en) | 2010-12-01 |
| CN101900123B CN101900123B (en) | 2014-04-02 |
Family
ID=43225944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010183653.XA Expired - Fee Related CN101900123B (en) | 2009-05-29 | 2010-05-14 | Fluidic device and pump device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5410841B2 (en) |
| CN (1) | CN101900123B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362828A (en) * | 2012-03-27 | 2013-10-23 | 日本电产三协株式会社 | Pump apparatus |
| CN113958511A (en) * | 2020-07-20 | 2022-01-21 | 日本电产三协株式会社 | Pump device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018178820A (en) * | 2017-04-10 | 2018-11-15 | 日本電産サンキョー株式会社 | Pump device |
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| JP2004144013A (en) * | 2002-10-24 | 2004-05-20 | Aisin Seiki Co Ltd | Water pump |
| JP2005207310A (en) * | 2004-01-22 | 2005-08-04 | Koyo Seiko Co Ltd | Motor-driven pump |
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| JP2008089041A (en) * | 2006-09-29 | 2008-04-17 | Asmo Co Ltd | Sealing structure of rotating shaft member |
| CN201236837Y (en) * | 2008-08-08 | 2009-05-13 | 宜兴市灵谷塑料设备有限公司 | Non-contact sealing device for cantilever submerged pump |
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| JPH01146757U (en) * | 1988-03-18 | 1989-10-11 | ||
| JPH1137081A (en) * | 1997-07-17 | 1999-02-09 | Shibaura Eng Works Co Ltd | Centrifugal pump |
| CN2314136Y (en) * | 1997-08-18 | 1999-04-14 | 杭州碱泵厂 | Power impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103362828A (en) * | 2012-03-27 | 2013-10-23 | 日本电产三协株式会社 | Pump apparatus |
| CN103362828B (en) * | 2012-03-27 | 2015-10-28 | 日本电产三协株式会社 | Pump-unit |
| CN113958511A (en) * | 2020-07-20 | 2022-01-21 | 日本电产三协株式会社 | Pump device |
| CN113958511B (en) * | 2020-07-20 | 2024-03-08 | 日本电产三协株式会社 | Pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010275948A (en) | 2010-12-09 |
| JP5410841B2 (en) | 2014-02-05 |
| CN101900123B (en) | 2014-04-02 |
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