CN1328218A - Pump device - Google Patents
Pump device Download PDFInfo
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- CN1328218A CN1328218A CN 01123180 CN01123180A CN1328218A CN 1328218 A CN1328218 A CN 1328218A CN 01123180 CN01123180 CN 01123180 CN 01123180 A CN01123180 A CN 01123180A CN 1328218 A CN1328218 A CN 1328218A
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- 239000007788 liquid Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 26
- 239000008236 heating water Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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- Thermally Insulated Containers For Foods (AREA)
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Abstract
The purpose of this invention is to provide a pump device having a structure in which idling of an impeller is less prone to occur by the cavitation phenomenon even in the case where the impeller having the large outside diameter is rotated at low speed, in order to efficiently feed hot water with saved power. The solution of this device is as follows. This pump device is provided with an impeller 2 to be rotated so that the rotational horizontal surface L may be parallel to the liquid level of liquid to be sucked or discharged and a pump chamber 3 for rotatably housing the impeller 2. This pump chamber 3 is provided with a suction port 32 for sucking liquid into the pump chamber by the rotation of the impeller 2, and a discharge port 33 arranged outward in the radial direction of the impeller 3 in order to discharge sucked liquid. A tilting part 36 to be radially and outward tilted in the direction opposite to gravity is provided on the surface (partition wall) 31 facing on upper end side of the impeller 2 in the pump chamber 3.
Description
Jar pot) the present invention relates to be used for heating water boiler (ジ ヤ-Port Star ト: the small-sized and pump-unit that be suitable for dealing with cavitation of device such as.
The various schemes of the heating water boiler device that the supply boiling water of interior dress motor-drive pump device uses have been proposed in the prior art.In addition, in the past, the heating water boiler device of built-in pump device type, its main product is for the bottom surface of housing externally and be configured in the space (lower portion of reservoir) between the bottom surface of reservoir of this external casing, laterally disposes the said pump device.But, in recent years, in order to save the space, the trend that the whole dimension that reduces the heating water boiler device is arranged, for making the slimming of reservoir bottom, proposed pump-unit not to be configured in the bottom of reservoir, but pump-unit longitudinally has been configured in the first-class various schemes of external lateral portion of reservoir sidewall.
The main structure of this pump-unit, by motor as driving source, the impeller that utilizes the driving force of this motor to make it in pump chamber, to rotate, and the pump chamber that can hold this impeller constitutes with rotating freely.Simultaneously, in pump chamber, be provided for sucking the suction port of the liquid in the reservoir, and the exhaust port that the liquid that is sucked is discharged to the outside usefulness of heating water boiler device.The other end that one end is connected to the U-shaped connecting tube on the bottom surface of reservoir is connected on the suction port.The other end that one end is connected to the pipe on the boiling water supply port is connected on the exhaust port.The pump-unit of Gou Chenging during impeller rotation in season, in the rotating center section generation negative pressure of impeller, utilizes this negative pressure that the boiling water in the reservoir is drawn in the pump chamber by this way.Then, the boiling water that is inhaled into is discharged from from exhaust port, is discharged to the outside of heating water boiler device from the boiling water supply port through aforementioned tube.
It is that the boiling water that will seethe with excitement in reservoir is discharged to the outside by the said pump device that heating water boiler device, its purposes are used in the boiling water supply.Therefore, when the boiling water after just seething with excitement is carried out the boiling water supply immediately, the boiling water vaporization after just having seethed with excitement, so-called cavitation takes place owing to the negative pressure that produces in the impeller center becomes big bubble in the steam that this vaporization generates.When this big bubble surrounded impeller, impeller can dally, and can not draw boiling water, can not be from the problem of boiling water supply port discharge thereby exist boiling water.
In addition, learn from experience that when the reduced diameter of the impeller that makes pump-unit, above-mentioned bubble is easy to escape into the outside of impeller, bubble is discharged to the outside of heating water boiler device easily through pipeline from exhaust port.Therefore, can alleviate above-mentioned air pocket problem if dwindle the external diameter of impeller.But when dwindling the external diameter of impeller, pump efficiency reduces, and exists the problem that the boiling water discharge capacity reduces.In addition, if strengthen the revolution of big small impeller, can solve the air pocket problem and also can improve the boiling water discharge capacity.But, so, can increase power consumption, do not meet the requirement to economizing on electricity in recent years.
In view of the above problems, the structure that the purpose of this invention is to provide the described pump-unit of a kind of pump-unit is, even save electric power and can supply boiling water efficiently again and make under the situation of structure of the big impeller low speed rotation of external diameter being adopted as, also be difficult to take place the impeller idle running that causes because of cavitation.
[technological scheme]
For reaching this purpose, being characterized as of pump-unit of the present invention, it is equipped with impeller that liquid level of the liquid of its rotation horizontal plane and suction and discharge rotates abreast and the pump chamber that can freely hold this impeller rotatably, in this pump chamber, be provided with by the impeller rotation liquid is sucked suction port in this pump chamber, and the exhaust port along the radial direction outside configuration of impeller of the liquid that sucked being discharged usefulness, on the face of the upper end side of the impeller that is configured in pump chamber, the rake that the direction opposite with gravitational direction of extending to the radial direction outside tilts is set.
According to foregoing invention, when the boiling water feeding mechanism that this pump-unit is made heating water boiler vertically is provided with in the space that is configured in the reservoir outside in the heating water boiler, the caused impeller idle running of the cavitation that produces after just seething with excitement can be suppressed at bottom line.Promptly, when the boiling water after just seething with excitement being discharged to the heating water boiler outside, by the bubble that negative pressure generated of impeller rotating center place generation, around back side to impeller, promptly around in the top board and the space between the impeller of pump chamber, this bubble then moves to the outside of impeller along rake.Therefore, this bubble can not surround impeller, can discharge from exhaust port.Thereby, can prevent that the boiling water that is caused because of impeller idle running is under-supply.
Simultaneously, another one invention, in the said pump device, rake is arranged near the exhaust port of face of the impeller upper end side that is disposed at pump chamber.Like this, because rake is formed near the exhaust port, be easy to discharge from exhaust port more reliably by the bubble that cavitation generated.
In addition, the another one invention, in the said pump device, above pump chamber, with respect to impeller with the state subtend that separates with spacing wall ground configuration rotary magnet, impeller then be equipped with rotation along with rotary magnet, by the magnetic attraction that penetrates spacing wall and rotary magnet driven from moving magnet, meanwhile, two magnet separate with spacing wall each other with respect to the face that rotates the horizontal plane almost parallel, with the form subtend ground configuration on plane.
According to foregoing invention, can constitute above-mentioned two magnet with making plane identical shaped magnet simultaneously with the position of spacing wall subtend.Therefore, the structure of available same types is made two magnet, reduces manufacture cost.And, adopt this structure, because two magnet are not subjected to the influence of above-mentioned rake with respect to the allocation position of spacing wall, thereby needn't strengthen axial distance between the two.Thereby, can make the higher pump-unit of magnetic coupling force, energy efficiency that can not reduce between the two.
Simultaneously, another invention, in the said pump device, rake be formed near the impeller rotating center of the face of the upper end side of the impeller that is disposed at pump chamber up to position corresponding to the impeller outside.Therefore can make because of what cavitation generated and be trapped in the outside that near the impeller rotating center bubble more effectively moves to impeller.
In addition, another invention, in the said pump device, above pump chamber, dispose rotary magnet with the state subtend ground that separates with spacing wall with respect to impeller, impeller be equipped with the rotation that is accompanied by rotary magnet by the magnetic attraction that penetrates spacing wall and rotary magnet driven from moving magnet, rotary magnet and from the subtend face of one of moving magnet or both and spacing wall, form the plane of inclination parallel, the magnet that forms this plane of inclination is in axial direction closely disposed with respect to spacing wall with the rake that on the interval, forms.
Therefore, prevent that by on spacing wall, forming rake two magnet from increasing in the distance of axial direction each other.That is, utilize above-mentioned plane of inclination by rotary magnet and one of from moving magnet or both with respect to spacing wall closely configuration vertically, the distance between two magnet of can furthering is brought into play the bonding force of magnet more fully.Thereby, can more effectively the power of driving source be conducted to impeller, can be made into the higher pump-unit of energy efficiency.
Fig. 1, be the sectional arrangement drawing that is illustrated in the pump-unit in first form of implementation of the present invention.
Fig. 2, be the sectional arrangement drawing that is illustrated in the pump-unit in second form of implementation of the present invention.
Fig. 3, be the sectional arrangement drawing that is illustrated in the pump-unit in second form of implementation of the present invention.
The pump-unit of first kind of form of implementation of the present invention is described according to Fig. 1 below.
The pump-unit of first kind of form of implementation of the present invention, as shown in Figure 1.Have motor 1,, can hold the pump chamber 3 of this impeller 2 with rotating freely by the impeller 2 that the driving force of this motor 1 is rotated as driving source.This pump-unit is to be configured in the sidewall outside type of storing the container (omitting among the figure) that liquid uses.More particularly, this pump-unit is suitable for using as the boiling water feeding mechanism of heating water boiler, estimates it is configured in the space between the sidewall of the sidewall of reservoir of heating water boiler and external casing.Therefore, as shown in Figure 1, this pump-unit its usage mode under the state of erectting is, the liquid level that is configured in the liquid in the unshowned reservoir in the rotation horizontal plane L of impeller 2 of motor 1 bottom and the load map is disposed abreast.
Motor 1, the mode that can be projected into the below with its output shaft 1a remains on this pump-unit is fixed on the fixed component 4 of the fixedly usefulness on the assigned position of heating water boiler (omitting among the figure) with rotating freely.Simultaneously, above the motor 1 that is in this state, be extruded with the terminal 1b that constitutes power suppling part, be connected on this terminal with the connecting line 5 of power supply (omitting among the figure).
Simultaneously,, promptly on the foot of this motor 1, be fixed with the rotating center section of disc-shaped component 6a, on the lower surface of this disc-shaped component 6a, be fixed with ring-type rotary magnet 6b in the underpart of output shaft 1a.Described output shaft 1a, disc-shaped component 6a and rotary magnet 6b are accommodated in the housing case 7 on the lower end surface of being fixed in motor field frame 1c.
This housing case 7 is under its installment state, be inverted cup-shaped, its upper bottom surface 7a is fixed on the lower end of motor field frame 1c, and described upper bottom surface 7a portion in the central is provided with the hole, and this hole is used for the bearing 1d of supporting output shaft 1a is kept also making output shaft 1a insert and extend through the below within it in week simultaneously.Simultaneously, on the outer circumference end part of this upper bottom surface 7a, form the cylindrical portion 7b that extends downwards, be used for output shaft 1a, disc-shaped component 6a and rotary magnet 6b are from the outer side covers of radial direction.When passing through connecting line 5 when the motor 1 of such formation is powered, disc-shaped component 6a and rotary magnet 6b rotate in above-mentioned housing case 7 with output shaft 1a.
Below above-mentioned housing case 7, the pump chamber 3 of impeller 2 is held in configuration.This pump chamber 3 is provided with from the both sides of the axial direction of impeller shaft 2 in the mode of clamping impeller 2 and disposes when being roughly discoid planar surface portion, and forms with being essentially the shape that the outer circumference end edge of wall cylindraceous portion with described two planar surface portion couples together.The upper side plane portion of pump chamber 3 constitutes the spacing wall 31 that the inner space and motor 1 side of pump chamber 3 are kept apart.The cylindrical portion 7b of this spacing wall 31 by being welded on housing case 7 isolates the inner space and motor 1 side of this pump chamber 3 bottom.
In central authorities this partitioning wall 31 and upper end side subtend impeller 2 position, an auxiliary section 31a is set, but the upper end of the impeller shaft 21 of free rotary ground supporting impeller 2 embeds and is fixed on the 31a of this auxiliary section, and impeller 2 is that rotating center rotates in pump chamber 3 with this impeller by 21.
In the central authorities of the downside planar surface portion of the pump chamber 3 that is holding in the above described manner the impeller 2 that constitutes, rotation by impeller 2 is set in container (omitting the figure), liquid is sucked suction port 32 in this pump chamber 3.In these suction port 32 central authorities, with the 32a of thrust pad portion that bears the thrust decline of impeller 2 around the setting in aggregates of the housing of pump chamber 3.The 32a of this thrust pad portion has such effect, that is, and and suffered pressure when impeller is subjected to attraction force liquid and when descending, it continues the rotating center section 22 and this 32a of thrust pad portion contact preventing of impeller 2 to descend.
Simultaneously, be provided on the periphery wall of the pump chamber 3 outside the radial direction that constitutes impeller 2 will being drawn into the exhaust port 33 that the liquid in the pump chamber 3 is discharged by the rotation of impeller 2.Simultaneously, on this exhaust port 33, connect the outside that the radial direction that is projected into this pump chamber 3 is set and the discharge tube 34 that extends upward.The pump chamber of Gou Chenging is by impeller 2 rotation of portion within it like this, and liquid flows into from above-mentioned suction port 32, and the liquid that is flowed into is arranged to discharge tube 34 from exhaust port 33.
In addition, above-mentioned pump chamber 3 is formed by first casing 37 that is configured in housing case 7 sides and second casing 38 that is configured in these first casing, 37 bottoms.First casing has above-mentioned spacing wall 31, and the periphery wall 35 that extends, centers on the radial direction outside of impeller 2 from the outer peripheral edge portion of this spacing wall 31 downwards.And then the part with above-mentioned exhaust port 33 on first casing 37 is integrally formed discharge tube 34.Simultaneously, the lower end edge portion of this cylindrical wall portion 35 is divided into the open end, second casing 38 is covered in the mode of stopping up this open end and welds thereon.Whereby, first casing 37 and 38 one-tenth of second casings are as a whole.In addition, on second casing 38, the part of a part that constitutes exhaust port 33 is set, and is used to the rake 38a that tilts upward that liquid is used to discharge tube 34 side shiftings from exhaust port 33 smoothly.
Below, above-mentioned spacing wall 31 is further described in detail.
The radial dimension of spacing wall 31 is a bit larger tham the external diameter of the impeller 2 of impeller 2.Therefore, have with impeller 2 the subtend position X of upper end subtend, and, than this subtend position X further to the outside configuration of direction radially, with the upper end of the impeller 2 non-subtend position Y of subtend not.In the X of subtend position, near on the part of above-mentioned exhaust port 33, be provided with, i.e. the rake 36 that slowly tilts of top in Fig. 1 along opposite with the gravitational direction laterally direction of radial direction.In addition, in this first kind of form of implementation, rake 36 further tilts to continuously with being connected with discharge tube 34 of its outside always 39 places, position is set from further forming continuously near exhaust port 33 non-subtend position Y sides near the exhaust port 33 of above-mentioned subtend position X simultaneously.
Like this, the pump-unit of first kind of form of implementation of the invention described above, near the part place the exhaust port 33 at spacing wall 31 places of the upper end side that is disposed at impeller 2 is provided with the rake 36 that tilts along opposite with the gravity laterally direction of radial direction.Therefore, when the device that this pump-unit is used as the supply boiling water of above-mentioned heating water boiler disposes vertically to be provided with, the idle running of the impeller that cavitation caused of generation after just seething with excitement can be suppressed to bottom line.Promptly, when the boiling water after just seething with excitement being discharged to the heating water boiler outside, by the bubble that negative pressure generated that produces at the rotating center of impeller 2 around back side to impeller, promptly around in the spacing wall 31 and the space S between the impeller 2 of pump chamber 3, this bubble along above-mentioned rake 36 smoothly to the outer side shifting of the radial direction of impeller 2.Therefore, this bubble can not surround impeller 2, and discharges from exhaust port 33.Thereby, can prevent that the boiling water that is caused because of impeller idle running is under-supply.
Simultaneously, in this aforesaid first kind of form of implementation, by rake 36 is set, compare with the pump-unit of existing structure, it is a kind of when supplying boiling water after just seething with excitement, and is not easy to cause the structure of impeller 2 idle running.Therefore, can make the bigger structure of external diameter R, by with this big impeller 2 of low speed rotation, can more effectively supply boiling water simultaneously with little power than the pump-unit impeller 2 of existing structure.In addition, also has same effect in described in the back second and third kind form of implementation.
In addition, as shown in Figure 1, in this first kind of form of implementation, two magnet 6b, 24, with respect to the rotation horizontal plane L of above-mentioned impeller 2, separate, dispose by spacing wall 31 each other with plane earth mode subtend ground at substantially parallel face.On above-mentioned spacing wall 31, form rake 36, this rake 36 is from two magnet 6b, and near the outer circumference end of 24 subtend position X until its outside forms.Therefore, two magnet 6b that separate by spacing wall, the subtend configuration, 24, even be plane between its subtend face, can not be subjected to the influence that rake 36 exists yet, can be with the closely configuration vertically of two magnet.Thereby two magnet 6b can transmit magnetic attraction between 24 efficiently.In addition,, can make two magnet 6b with the structure of same types by adopting this structure, 24, thus can reduce manufacture cost.
In addition, be the preferred embodiment of the present invention in above-mentioned first kind of above-mentioned form, but the present invention is not limited to this, in the scope that does not exceed purport of the present invention, can carry out various distortion and be implemented.For example, in above-mentioned first kind of form of implementation, rake 36 is positioned near the position of the exhaust port 33 of spacing wall 31, extends to be connected with discharge tube 34 always position 39 is set from beginning further non-subtend position Y through its outside with subtend position, the upper end X of impeller 2.But rake 36 also can not extend to being connected of exhaust port 34 position 39 is set.Simultaneously, rake 36 also can only be formed at X place, subtend position, perhaps also can only be formed at Y place, non-subtend position.In addition, be formed on the X of subtend position, do not establish rake and make the plane with respect to the part of non-subtend position Y, discharge tube 34 be connected be provided be provided with on the position 39 with subtend position X and same rake also passable.And then, rake 36 from non-subtend position Y begin intactly to extend to always with discharge tube 34 to be connected the portion of setting 39 also passable.
And then, also can adopt the structure of second kind of form of implementation as shown in Figure 2.Promptly, the center side (than the inboard of the rake 36 more close radial directions in above-mentioned first kind of form of implementation) of the spacing wall 31 that will separate the inner space of pump chamber 3 and motor 1 side is not made the plane, be projected into the coniform of impeller 2 sides but make its apex 31A, above-mentioned rake 36 not only is formed near the of exhaust port 33 but is formed on the whole circumference of spacing wall 31.When from the central authorities of the subtend position X of impeller 2 near when the position corresponding to the outside of impeller 2 forms big rake 36, when the hole takes place around the bubble of ora terminalis central authorities to impeller 2 at an easy rate from the outer side shifting of the radial direction of impeller 2.Thereby described second kind of form of implementation can prevent the idle running of the impeller 2 that caused by air pocket more reliably.
In addition, in this second kind of form of implementation shown in Figure 2, rake 36 continues up to the non-subtend position Y in the outside that is configured in subtend position X, rake 36 further extend to its outside with being connected of discharge tube 34 position 39 is set, but this rake 36 also can only be formed at subtend position X, perhaps, also can only be formed at subtend position X and with discharge tube 34 be connected the portion of setting 39 places (position Y does not form rake in non-subtend).
In addition, in second kind of form of implementation shown in Figure 2, because spacing wall 31 is made roughly institute's taper shape, the rotary magnet 6b from the distance H 1 of moving magnet 24 and above-mentioned first kind of form of implementation of the rotary magnet 6b of motor 1 side and impeller 2 with compare from the distance H of 24 of moving magnets, widen significantly (in second kind of form of implementation, compare with above-mentioned second kind of form of implementation, in fact widened three times).Therefore, second kind of form of implementation compared with first kind of form of implementation, though as preventing to bring into play better effect because of the measure meeting of dallying that prevents that air pocket causes, the magnetic force of generation then can not more effectively be carried out transmission between two magnet 6b and 24.But this adopts this structure also to be out of question under the situation of pursuit pump efficiency within reason.
Simultaneously, the third form of implementation shown in Figure 3 makes two magnet 6b in above-mentioned second kind of form of implementation, and the distance H 1 between 24 narrows down, so that improve the efficient of pump.Promptly, in the third form of implementation, the shape of spacing wall 31 is the same with above-mentioned form in above-mentioned second, but at two magnet 6b of the both sides that are disposed at spacing wall 31, also form the plane of inclination 6c that the tilt angle with the rake 36 of this spacing wall 31 matches on 24 respectively, 24c.Whereby, make two magnet 6b, the distance H between two magnet of the distance H 2 between 24 and above-mentioned first kind of above-mentioned form equates basically.Thereby described the third form of implementation is in the effect with second kind of form of implementation, promptly has to make bubble be easy to the effect that moves laterally from the radial direction of impeller 2 when producing air pocket, meanwhile, also can transmit magnetic force expeditiously.
In addition, in the third form of implementation, each magnet 6b, 24 is to tilt equally with the subtend face of spacing wall 31 respectively, but also can have only a magnet to have the plane of inclination.Be roughly under the conical situation in spacing wall like this, two magnet 6b with second kind of form of implementation, 24 is not that the situation of plane of inclination is compared, by making two magnet 6b, any one has the face that tilts with corresponding to the tilt angle of mutual inductance wall 31 in 24, can shorten two magnet 6b, the distance between 24 improves magnetic efficiency.
In addition, above-mentioned each form of implementation is respectively an example of the preferred embodiment of the present invention, but the present invention is not limited to this, can implement various distortion in the scope that does not exceed purport of the present invention.For example, in above-mentioned each form of implementation, be configured in the face of upper end side of the impeller 2 of pump chamber 3, promptly, be formed at spacing wall 31, rake 36 on the 31A, all with whether comprise other parts at interior be formed irrelevant, at least all be formed at exhaust port 33 near, but, this rake 36 also can not be formed at exhaust port 33 near, for example, only be formed near the central authorities also passable.This is because in this structure, and the bubble that is generated by cavitation is trapped near the bubble the rotating center of impeller 2, also can move to the lateral direction of impeller 2 along air pocket portion 36.
Simultaneously, in above-mentioned each form of implementation, under the state that separates with spacing wall 31, two magnet 6b, the configuration of 24 subtends utilizes this two magnet 6b, and the magnetic attraction between 24 passes to impeller 2 with the driving force of motor 1, the promptly so-called magnetic coupling mode that adopts.But the present invention also is applicable to the magnetic coupling mode, for example of not adopting, and the output shaft of motor directly is projected in the pump chamber, insertion is run through the pump-unit of the structure that bore portion that this motor output shaft uses embeds with sealing component.
Simultaneously, in above-mentioned each form of implementation, the structure that motor 1 longitudinally is configured in the below of pump chamber 3 has been described.And then motor is not vertically configuration but landscape configuration, to its output shaft, adopts the structure of extracting output from orthogonal direction can gear matched yet.For example, also worm screw can be set on output shaft, rotary magnet 6b is arranged on the worm-wheel shaft that is coupled on this worm screw.
As described above, pump-unit of the present invention is provided with the rake that the direction opposite with gravitational direction of extending laterally along radial direction tilts on the face of the upper end side of the impeller that is disposed at pump chamber.Therefore,, be configured under the situation in the space in the outside of the reservoir in the heating water boiler at the device that this pump-unit is used as heating water boiler supply boiling water, can be the outside of arriving in the radial direction of impeller afterwards by the bubble that cavitation generated that just seethes with excitement.Therefore, prevent that impeller from being surrounded by bubble, the idle running phenomenon of the impeller in the time of can acutely seething with excitement afterwards just seething with excitement is suppressed to bottom line.
Claims (6)
1, a kind of pump-unit, it is characterized by, it has rotation horizontal plane rotary blade parallel with the liquid level of the liquid of suction and discharge and the pump chamber that can hold this impeller with rotating freely, wherein, the exhaust port that rotation by above-mentioned impeller is drawn into liquid suction port in this pump chamber and the liquid that sucks is discharged the above-mentioned impeller radius direction of being configured in of the usefulness outside is set in this pump chamber, on the face of the upper end side of the above-mentioned impeller that is configured in above-mentioned pump chamber, the rake that the direction opposite with gravitational direction of extending laterally along radial direction tilts is set.
2, pump-unit as claimed in claim 1 is characterized by, and aforementioned rake is arranged near the aforementioned exhaust port of face of upper end side of the aforementioned impeller that is disposed at aforementioned pump chamber.
3, pump-unit as claimed in claim 2, it is characterized by, above the aforementioned pump chamber with respect to aforementioned impeller under the state that separates with spacing wall, subtend ground configuration rotary magnet, aforementioned impeller be equipped with along with the rotation of above-mentioned rotary magnet by the magnetic attraction that passes spacing wall and above-mentioned rotary magnet driven from moving magnet, above-mentioned two magnet of while, with respect to aforementioned rotation horizontal plane, substantially parallel face each other with above-mentioned spacing wall separate, with the configuration of the mode subtend on plane.
4, pump-unit as claimed in claim 1 is characterized by, aforementioned rake near the of the aforementioned impeller rotating center of the face of the upper end side of the aforementioned impeller that is configured in aforementioned pump chamber until form corresponding to the position in the outside of aforementioned impeller.
5, pump-unit as claimed in claim 4, it is characterized by, above the aforementioned pump chamber with respect to aforementioned impeller under the state that separates with spacing wall, subtend ground configuration rotary magnet, aforementioned impeller be equipped with along with the rotation of above-mentioned rotary magnet by the magnetic attraction that passes spacing wall and above-mentioned rotary magnet driven from moving magnet, at above-mentioned rotary magnet and above-mentioned from the subtend face of one of moving magnet or both and above-mentioned spacing wall, form with above-mentioned spacing wall on the parallel plane of inclination of aforementioned rake that forms, the magnet that forms this plane of inclination is in axial direction closely disposed with respect to above-mentioned spacing wall.
6, as any one described pump-unit in the claim 1 to 5, it is characterized by, it has the discharge tube that extends upward when being communicated with aforementioned exhaust port, are provided with aforementioned exhaust port and being connected of above-mentioned discharge tube the position, with the continuous position of aforementioned pump chamber, the rake that the rake that will be formed on the aforementioned pump prolongs laterally along radial direction is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000177460A JP4012667B2 (en) | 2000-06-13 | 2000-06-13 | Pump device |
| JP177460/2000 | 2000-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328218A true CN1328218A (en) | 2001-12-26 |
| CN1142370C CN1142370C (en) | 2004-03-17 |
Family
ID=18679051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011231807A Expired - Fee Related CN1142370C (en) | 2000-06-13 | 2001-06-12 | Pump device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4012667B2 (en) |
| CN (1) | CN1142370C (en) |
| TW (1) | TW498138B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451342C (en) * | 2004-09-30 | 2009-01-14 | 株式会社鹭宫制作所 | Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
| CN105256515A (en) * | 2014-07-08 | 2016-01-20 | Lg电子株式会社 | Drain pump assembly and dryer for clothes having the same |
| CN107075779A (en) * | 2014-10-24 | 2017-08-18 | Lg电子株式会社 | Draining pump and the clothesdrier with draining pump |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006177184A (en) * | 2004-12-21 | 2006-07-06 | Fuji Koki Corp | Drain pump |
| JP4937041B2 (en) * | 2007-08-27 | 2012-05-23 | 株式会社東芝 | Drain pump for washing dryer |
| JP6800712B2 (en) * | 2016-11-22 | 2020-12-16 | 株式会社不二工機 | Drainage pump |
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2000
- 2000-06-13 JP JP2000177460A patent/JP4012667B2/en not_active Expired - Fee Related
-
2001
- 2001-06-04 TW TW90113458A patent/TW498138B/en not_active IP Right Cessation
- 2001-06-12 CN CNB011231807A patent/CN1142370C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451342C (en) * | 2004-09-30 | 2009-01-14 | 株式会社鹭宫制作所 | Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
| CN105256515A (en) * | 2014-07-08 | 2016-01-20 | Lg电子株式会社 | Drain pump assembly and dryer for clothes having the same |
| AU2015288463B2 (en) * | 2014-07-08 | 2018-03-15 | Lg Electronics Inc. | Drain pump and a clothes dryer having a drain pump |
| US9982384B2 (en) | 2014-07-08 | 2018-05-29 | Lg Electronics Inc. | Drain pump and a clothes dryer having a drain pump |
| CN107075779A (en) * | 2014-10-24 | 2017-08-18 | Lg电子株式会社 | Draining pump and the clothesdrier with draining pump |
| US10280553B2 (en) | 2014-10-24 | 2019-05-07 | Lg Electronics Inc. | Drain pump and clothes dryer having a drain pump |
| CN107075779B (en) * | 2014-10-24 | 2020-03-06 | Lg电子株式会社 | Drain pump and laundry dryer having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4012667B2 (en) | 2007-11-21 |
| JP2001355597A (en) | 2001-12-26 |
| TW498138B (en) | 2002-08-11 |
| CN1142370C (en) | 2004-03-17 |
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| C14 | Grant of patent or utility model | ||
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Owner name: NIDEC SANKYO CORP. Free format text: FORMER NAME OR ADDRESS: SANKYO SEIKI MFG. SEISAKUSHO K.K. |
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| CP03 | Change of name, title or address |
Address after: Nagano Patentee after: Sankyo Seiki Seisakusho KK Address before: Nagano Patentee before: Sankyo Seiki Manufacturing Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040317 Termination date: 20110612 |