CN101031723A - Vertical shaft centrifugal pump, rotor for the pump, and air conditioner - Google Patents
Vertical shaft centrifugal pump, rotor for the pump, and air conditioner Download PDFInfo
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- CN101031723A CN101031723A CNA2005800333155A CN200580033315A CN101031723A CN 101031723 A CN101031723 A CN 101031723A CN A2005800333155 A CNA2005800333155 A CN A2005800333155A CN 200580033315 A CN200580033315 A CN 200580033315A CN 101031723 A CN101031723 A CN 101031723A
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- rotor
- pump
- mainboard
- rotor shaft
- pin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/14—Pumps raising fluids by centrifugal force within a conical rotary bowl with vertical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
In a conventional water discharge pump assembled in an air conditioner, the rotation of a blade wheel produces cavitation to cause a problem with quietness. A vertical shaft water discharge pump of the invention has a rotor (23), a casing (20), a cover (22) that forms, together with the casing (20), a pump chamber (21) in which the rotor (23) is received, a suction pipe (25) forming a suction path (24) communicating with a lower end central portion of the pump chamber (21), and a discharge port (26) communicating with the pump chamber (21). The rotor (23) has a rotor shaft (40) connected at its upper end section to a drive motor (16), a circular main plate (42) cocentrically integrally connected to the rotor shaft (40), pins (43) projecting from the main plate (42) substantially in parallel to the axis of the rotor shaft (40), and uniformly pressing sections (44, 46) formed in the main plate (42) and communicating between the front surface side and the back surface side of the main plate (42).
Description
Technical field
The present invention relates to vertical shaft type centrifugal pump and the pump rotor that in this vertical shaft type centrifugal pump, uses, be fit to be applied to the draining pump of in the aircondition of ad hoc requirement quietness, installing.
Background technique
In the vertical shaft type centrifugal pump, the rotation by impeller drives existing liquid in rotation in the housing, utilizes the consequent centrifugal force liquid that spues outside housing.In addition, be accompanied by the disgorging motion of this liquid, in housing, suck new liquid.This vertical shaft type centrifugal pump can be used as for example draining pump of aircondition.
In aircondition, for the airborne condensed water that produces in the running of outdoor discharge cold air room, the general employing temporarily is accumulated in it in drain pan, utilizes draining pump from here to outdoor method of discharging then.
As such draining pump, known in patent documentation 1 and patent documentation 2, have disclosed.In the disclosed draining pump of these patents, in by the pump chamber that lid and housing surrounded, contain impeller, the impeller shaft of this impeller links to each other with motor.Can make the impeller rotation in the pump chamber by driving this motor, and drive liquid such as the water that exists in the pump chamber and rotate jointly with impeller.That is to say, rotate jointly, utilize the centrifugal force that produces in the liquid, from the discharge pipe released liquor body outside pump chamber that is communicated with the peripheral part of pump chamber by liquid and the impeller that drives in the pump chamber.In addition, in the time of from this pump chamber drain, suck new liquid to pump chamber from the suction pipe that is communicated with the pump chamber lower center portion.
Constitute the impeller of draining pump major component jointly with housing, possess the impeller shaft that links to each other with motor and around this impeller shaft, be radial many pieces of outstanding impeller plates with respect to this impeller shaft.Existing this impeller plate in order to promote to be present in the driven rotary of the liquid in the pump chamber, and generally has with respect to the sense of rotation of impeller plate broad of quadrature roughly.
Patent documentation 3 disclosed impellers are also disclosed the same with patent documentation 2 with patent documentation 1 basically.In this patent documentation 3, in the plectane portion between impeller shaft and the impeller outer surrounding wall portion, through hole is set, prevent to be accompanied by the noise of axial vibration.Even this through hole is applicable to patent documentation 1 and patent documentation 2, can not say when impeller plate stirs beating water, the noise of generation is reduced fully.
In recent years, require to reduce the running sound in the air conditioner, require to reduce the work sound of the draining pump that is installed on this air-conditioner device and the kind of the various noises that accompany therewith.For example, only stir water noise even just become problem by what the work of draining pump caused.
As everyone knows, towards axis be with impeller shaft center rotation impeller impeller plate the sense of rotation side face and be positioned at the face of its opposite side, respectively the pressure difference ratio of Chan Shenging in the impeller plate peripheral velocity square and increase.Thus, be the particularly periphery end edge portion of impeller plate of the impeller of center rotation at axis with impeller shaft, with the face of the sense of rotation opposition side of impeller plate, be easy to generate cavitation erosion (cavitation), this cavitation erosion also is one of major reason of the above-mentioned noise of generation.And, in the rotation owing to impeller, the upper end portion of impeller plate begins to expose the place of the liquid level of the liquid that is driven to rotate in pump chamber, when the liquid around being present in impeller plate is crossed the upper end-face edge of impeller plate, the air that exists in the pump chamber is involved in, and produces noise.
The impeller plate of the impeller in the existing draining pump in order to promote to be present in the driven rotary of the liquid in the pump chamber, generally has with respect to the sense of rotation of impeller plate broad of quadrature roughly, and this also is the reason that above-mentioned noise produces.Yet, be assembled into the draining pump of aircondition, have unloaded lift characteristic that pump is low, its load is less in essence than other.Consider such characteristic, have,, we can say that shape is inappropriate as the draining pump that is assembled into aircondition with respect to the sense of rotation of impeller plate broad existing impeller plate of quadrature roughly.
Patent documentation 1: the practical new case of Japan is logined communique No. 2593986
Patent documentation 2: Japan speciallys permit communique No. 3282772
Patent documentation 3: the spy of Japan opens the 2002-242885 communique
Summary of the invention
The present invention proposes in view of above-mentioned problem, and its purpose is to provide a kind of to be had the vertical shaft type centrifugal pump of good quietness and be assembled in the rotor in this vertical shaft type centrifugal pump and be assembled with the aircondition of vertical shaft type centrifugal pump as draining pump.
A first aspect of the present invention provides a kind of vertical shaft type centrifugal pump, it is characterized in that, comprise: rotor, casing, be installed on this casing and form the lid of the pump chamber of accommodating described rotor with this casing, the outstanding suction pipe that is provided with and forms the suction path that is communicated in described pump chamber lower center portion on described casing, and the discharge opening that on described casing, forms and be communicated with described pump chamber, wherein, described rotor comprises: the upper end portion is connected in the rotor shaft of drive motor from the outside of described lid, be concentric shape one and be connected mainboard on this rotor shaft, be roughly parallel to the axis of described rotor shaft and many outstanding pins from this mainboard, and the equal splenium that is communicated with the surface side and the back side of described mainboard.
In the present invention, if be connected in the drive motor work of rotor shaft upper end portion, then rotor rotates in the pump chamber that liquid such as water exist.Thus, be accompanied by from the outstanding pin of the mainboard of rotor and rotate in liquid, the liquid in the pump chamber begins to rotate jointly with rotor because of its viscosity gradually.Like this, be accompanied by the common rotation that is present in the liquid in the pump chamber, and produce centrifugal force, it is parabolic shape that this centrifugal force makes the Surface deformation of the liquid that exists in the pump chamber, and liquid spues to the discharge opening that is communicated in its peripheral part from pump chamber.In addition, follow the disgorging motion of this liquid, in pump, suck liquid from the suction path that is communicated in the pump chamber central part.Axle center with rotor is the pin that the center rotates in pump chamber, moves with respect to the liquid that exists around it, and it is rearward rotated into laminar condition roughly.
Vertical shaft type centrifugal pump according to a first aspect of the invention is the pin that the center rotates in pump chamber with the axle center of rotor, moves with respect to the liquid that exists around it, and it is rearward rotated into laminar condition roughly.Thus,, rise, therefore, the generation of pin cavitation erosion on every side and the noise that causes that is involved in of air are suppressed from equal splenium current in the generation pressure difference up and down of mainboard.
In the vertical shaft type centrifugal pump of first aspect present invention, can dispose the axis mixing component outstanding from the one end along rotor shaft in the suction path of suction pipe, this mixing component also can be that the axis from rotor shaft protrudes radial many wheel members.If configuration is along the axis of the rotor shaft mixing component outstanding from the one end in the suction path of suction pipe, the liquid that sucks in pump chamber from the suction path is flowed in the shape of a spiral, thereby can further improve pump efficiency.
Can on lid, form spacing wall, its from lid outstanding downwards and surround rotor around and and the inwall of casing between constitute the space of ring-type.This spacing wall, preferably relative with the discharge opening that forms on the casing, be positioned at the position that covers it.Thus, can stop the air that in pump chamber, exists, eliminate the noise that is produced when discharge opening moves from pump chamber at bubble to discharge opening one side inflow.
Can on lid, form and be communicated with in the pump chamber and the atmosphere outside access.In this case, can keep being in the pump chamber barometric pressure for a long time, so, can effectively utilize centrifugal force, efficiently from discharge opening to outdoor drain.
Mainboard forms ring-type, and formed annular spaces is worked as equal spleniums.In this case, mainboard and rotor shaft can link together integratedly by many supports that cross this space.The surface of the liquid that therefore, drinks up in pump chamber can promptly form parabolic shape.
Be formed with a plurality of intercommunicating pores at a plurality of connection mainboards surface and the back side, make these intercommunicating pores work also very effective as equal splenium, the bubble that is present under the outer circumferential side of the mainboard back side is bled off to surface side from intercommunicating pore, and do not flow into the oral-lateral that spues.In this case, roughly along the first direction of mainboard circumferencial direction and with the direction of its quadrature on first order group that is arranged with pin and intercommunicating pore and the direction that is becoming miter angle to tilt with respect to first direction and with the direction of its quadrature on be arranged with the second order group of pin and intercommunicating pore, can alternately arrange along circumferencial direction.Therefore, it is different that the spiral flow direction that can make the liquid that is obtained respectively by the first and second arrangement groups and flow velocity produce knifeedge, can eliminate the bubble that produces between each pin and liquid efficiently.
The area of each pin of projection on the face vertical with respect to the mainboard sense of rotation can be set to: be positioned at the pin of the radial direction inboard of rotor shaft, this area diminishes.Being involved in of ambient air of pin that thus, can be by suppressing to be positioned at the radial direction inboard suppressed noise.In addition, can make the kinetic energy of the pin that is positioned at the radial direction outside act on liquid effectively, to improve unloaded lift.Shorten by the length of setting each pin, and can access same effect near rotor shaft radial direction inboard.In addition, be positioned at by setting rotor shaft radial direction inboard pin, littler along the width dimensions of the front end of rotor shaft radial direction than base end part width dimensions, and can access same effect.Perhaps, the interval of pin that is positioned at rotor shaft radial direction inboard by setting is with identical or bigger than it with the interval in the outside, and can obtain same effect.
With the face of the axis normal of rotor shaft on the sectional shape of each pin, can adopt polygonals such as circle, ellipse, rectangle or asymmetrical shape such as wing arbitrarily.In this case, can be set to along the extreme length of the pin of mainboard sense of rotation identical with greatest width dimension along the pin of rotor shaft radial direction, or more than it.
As drive motor, can adopt than AC motor vibrations still less and littler lighter, control easier DC brushless motor.
A second aspect of the present invention provides a kind of pump rotor, it is characterized in that, comprising: rotor shaft, be concentric shape one and be connected mainboard on this rotor shaft, be roughly parallel to the axis of described rotor shaft and many outstanding pins and the equal spleniums that are communicated with the surface side and the back side of described mainboard from this mainboard.This pump is suitable as the rotor in the vertical shaft type centrifugal pump of first aspect present invention with rotor.
A third aspect of the present invention provides a kind of aircondition, it is characterized in that: the vertical shaft type centrifugal pump that first aspect present invention is installed is as draining pump.
Description of drawings
Fig. 1 is illustrated in the concept map of aircondition with the installation situation of a mode of execution of using vertical shaft type centrifugal pump of the present invention in the draining pump unit.
Fig. 2 is the local amplification sectional view of the II portion of the arrow indication among Fig. 1.
Fig. 3 is the general structure profile diagram of the draining pump unit of presentation graphs 1 illustrated embodiment.
Fig. 4 is the planimetric map of draining pump unit shown in Figure 3.
Fig. 5 is the ground plan of draining pump unit shown in Figure 3.
Fig. 6 is the ground plan of the cap portion in the draining pump unit shown in Figure 3.
Fig. 7 is the VII-VII arrow sectional view among Fig. 3.
Fig. 8 is the VIII-VIII arrow sectional view among Fig. 3.
Fig. 9 is the stereoscopic projection drawing of the rotor in the expression draining pump unit shown in Figure 3.
Figure 10 is the back elevation of rotor shown in Figure 9.
Figure 11 is the concept map of the flow direction of the fluid that causes of the first order group in rotor shown in Figure 12 medelling ground presentation graphs 9.
Figure 12 is the concept map of the flow direction of the fluid that causes of the second order group in rotor shown in Figure 11 medelling ground presentation graphs 9.
Figure 13 is a planimetric map of using other mode of executions of the present invention in the rotor of draining pump unit shown in Figure 3.
Figure 14 is the planimetric map of rotor shown in Figure 13.
Figure 15 is a profile diagram of using the different mode of executions of the present invention in the rotor of draining pump unit shown in Figure 3.
Figure 16 is a profile diagram of using other other mode of executions of the present invention in the rotor of draining pump unit shown in Figure 3.
Figure 17 is a profile diagram of using the other different mode of executions of the present invention in the rotor of draining pump unit shown in Figure 3.
Figure 18 is the profile diagram that is illustrated in the general arrangement of other mode of executions of using vertical shaft type centrifugal pump of the present invention in the draining pump unit shown in Figure 3.
Embodiment
With reference to Fig. 1～Figure 18, the mode of execution of using vertical shaft type centrifugal pump of the present invention in the draining pump unit on being assembled in aircondition is elaborated.The present invention also not only is confined to these mode of executions, these embodiments further can be made up, and can carry out all variations and modification that notion of the present invention comprised that claim of the present invention is put down in writing.So the present invention can be applied to belong to other any technology of its spirit certainly.
The installation situation of the draining pump unit in the present embodiment as shown in Figure 1, the II portion that its arrow refers to is extracted Fig. 2 and magnifying show in Fig. 2.That is, the draining pump unit 10 in the present embodiment is installed in by its carriage 11 on the fixing part 13 in the housing next door 12 that is formed at aircondition.Between the carriage 11 of fixing part 13 and rectangular plate shape, accompany the sealing gasket 14 that has shockproof function and sealing function simultaneously.By the mounting screw 15 that is screwed at fixing part 13, the assembly department 11a of carriage 11 remains on the state that is fixed on the fixing part 13 in housing next door 12.The mode that is positioned at 12 outsides, housing next door with the drive motor 16 that is used to drive the aftermentioned rotor is equipped on this drive motor 16 the joint 11b of carriage 11.The control panel 17 that is used for 16 actions of controlling and driving motor is arranged at the outside in housing next door 12, and this control panel 17 is connected by cable 19 with the connector 18 that is installed in drive motor 16.
And the connector 18 of the drive motor 16 in the present embodiment also can be configured in the position shown in two dot and dash line among Fig. 4, can suitably select according to the attended operation of cable 19 and with the interference of other parts.In addition, the carriage 11 of present embodiment is by not bringing the nonmagnetic material of dysgenic Austenitic Stainless Steel, aluminium etc. to form the work of aftermentioned drive motor 16.
The internal structure of the major component of this draining pump unit 10 as shown in Figure 3, its plane shape, bottom shape are respectively as Fig. 4, shown in Figure 5, the bottom shape of its lid as shown in Figure 6.In addition, the cross-sectional configuration shown in the VII-VII among Fig. 3, the VIII-VIII arrow is respectively as Fig. 7, shown in Figure 8.The outward appearance of rotor portion as shown in Figure 9, its bottom shape is as shown in figure 10.That is, the draining pump unit 10 in the present embodiment comprises: have the casing 20 of 20a of cylindrical sidewall portion and coniform bottom wall portion 20b and be connected and constitute the lid 22 of pump chamber 21 with this casing 20 with the upper end portion of the side wall portion 20a of this casing 20.This draining pump unit 10 also comprises: be contained in rotor 23 in the pump chamber 21, link to each other with rotor 23 and make the drive motor 16 of its rotation and be installed in lid 22 and motor 16 between and with its above-mentioned carriage 11 that separates.In the present embodiment, in order to separate at the drive motor 16 of the outside in the housing next door 12 of aircondition configuration and lid 22 and casing 20 in the configuration of the inboard in housing next door 12, and on the fixing part 13 in housing next door 12 mounting bracket 11.Therefore, the bearing part that the plate that dewaters is protected the drive motor 16 between lid 22 and the drive motor 16 need not be set.And, even use the drive motor of different performance,, also can only change drive motor 16 as draining pump unit 10.Therefore, also has the advantage that does not need to change carriage etc. fully.
And, in present embodiment, adopt the DC brushless motor as drive motor 16, the small-sized by a larger margin light of AC motor that can be bigger than vibration, its drive controlling also is more prone to.The dither shortcoming of DC motor can be shielded reliably by between the assembly department 11a of the housing next door 12 of aircondition and carriage 11 above-mentioned sealing gasket 14 being installed.
In the present embodiment, though the bottom wall portion 20b of casing 20 is set at central part coniform to lower recess, bottom wall portion 20b is set at the so-called planar parallel with horizontal plane also without any problem.Formed suction pipe 25 on this casing 20, this suction pipe 25 is outstanding under the mediad of bottom wall portion 20b, the suction path 24 of formation and pump chamber 21 internal communication.In addition, also formed discharge pipe 27 on this casing 20, this discharge pipe 27 is outstanding to the radial direction outside of rotor 23 from side wall portion 20a, its discharge opening 26 towards pump chamber 21 inside offers opening.Suction pipe 25 is located among Fig. 3 in the drain pan (drain pan) 28 by the aircondition shown in two dot and dash line, is immersed in basically in the condensed water of accumulating in this drain pan 28.In addition, front end is connected on the discharge pipe 27 to the base end part of the waste pipe 29 of the outside in the housing next door 12 of aircondition derivation.
And, in the present embodiment, internal diameter for discharge pipe 27, make its side downstream, then chap and make the state that keeps being drawn in (dwindling) towards the discharge opening 26 of pump chamber 21, but, need make the external diameter of discharge pipe 27 keep certain, operability when guaranteeing chimeric waste pipe 29 and sealing to each other.Thus, for the thickness of discharge pipe 27, towards terminal side, its thickness is thickening, still, and in the present embodiment, peripheral part to discharge pipe 27 subtracts thick processing (meat omission), realizes the high rigidization and the lightweight of discharge pipe 27 thus simultaneously.As long as can guarantee chimeric easiness and the sealing of waste pipe 29 with respect to discharge pipe 27, then no matter the thickness reducing part that forms on the periphery of discharge pipe 27 is which kind of form and shape all can.
On lower, outer perimeter, along the circumferential direction equally spaced be formed with up and to outstanding a plurality of (in the illustrated example being 4) card claw stop 30 in the radial direction outside as the lid 22 of resin forming product.The periphery of the side wall portion 20a of casing 20 is provided with: with described card claw stop 30 block respectively end and can be on radial direction the pawl supporting frame 31 that forms the frame shape of resiliently deformable.Therefore, by being pressed into from the top with lid 22, end (snap) and can make card claw stop 30 fasten card with respect to pawl supporting frame 31 with respect to casing 20.Thus, can make casing 20 and lid 22 integrated easily, and can select the relatively rotation place of casing 20 with respect to lid 22.That is, shown in two dot and dash line among Fig. 5, like that, can make any direction in changing to four direction of discharge pipe 27, with the configuration of coupling miscellaneous part etc.In the present embodiment, because pawl supporting frame 31 forms the frame shape, so under the state that card claw stop 30 is ended by card with respect to pawl supporting frame 31, can limit the rotation of lid 22 with respect to casing 20.Therefore, as long as pawl supporting frame 31 can be out of shape along radial direction generation micro-elastic, can use the hard composite resin material that is mixed with glass fibre, inorganic matter whisker (whisker) etc. to form casing 20 and pawl supporting frame 31, can design high-intensity casing 20.
In the upper end of lid 22 periphery, outstanding many (being 4 in illustrated example) connecting pins 32, the joint 11b of its difference through bracket 11 and the mounting flange 16a that on drive motor 16, forms of being provided with.Upper end by this connecting pin 32 of fusion forms caulking part 32a, thus, the joint 11b of lid 22 and carriage 11 and drive motor 16 is combined as a whole.Caulking part 32a for the upper end at connecting pin 32 forms can utilize technology such as ultrasonic welding, as long as its shape can guarantee that drive motor 16 and carriage 11 are not easy outwards to be extracted.
Central authorities at the base plate 33 of lid 22 upwards are formed with the top blocked protuberance with cylindrical cross-section 34, and outstanding being provided with forms a pair of liner 35 that is the semicircle arcuation that surrounds this protuberance 34.Protuberance 34 is formed with: being arranged in the axle hole 34a that 16b ran through of its central authorities and drive motor 16 and being positioned at its peripheral part and being used to keep pump chamber 21 is atmospheric a plurality of (is 4 in illustrated example) slit 34b.The upper end of liner 35 contacts with the joint 11b of carriage 11.Space 35a between the adjacent liner 35 forms the atmosphere access with a pair of space 22a with labyrinth formation that forms on the outer periphery of lid 22.In the present embodiment, the space 35a between the adjacent pad 35 and the rotatable phase that is formed at a pair of space 22a on lid 22 outer periphery 90 degree that roughly stagger.Thus, being connected in draining pump unit 10 atmosphere outside access from pump chamber 21 by slit 34b and space 35a, 22a can be by crooked significantly.As a result, the noise for the straight movement high frequency waves (more than the 1000Hz) that produce in pump chamber 21 can access bigger erasure effect.
And, when drive motor 16 stops, overflowing from slit 34b sometimes to a part of draining that pump chamber 21 sides flow backwards by discharge opening 26 from waste pipe 29.Yet, in the present embodiment, along the direction opposite, be clockwise tangent direction and on protuberance 34, form slit 34b among Fig. 7, therefore, can reduce the amount of the draining of overflowing from slit 34b with rotor 23 sense of rotation (anticlockwise direction among Fig. 7).
In the outer periphery portion of the base plate 33 of the lid 22 of pump chamber 21 sides, towards the bottom wall portion 20b of casing 20 outstanding downwards be provided with and the side wall portion 20a of casing 20 between be formed with the tubular spacing wall 37 of annular spaces 36.So the condensed water that is positioned at pump chamber 21 top peripheries flows downward because of the existence of spacing wall 37, the gap 38 between the lower end by spacing wall 37 and the bottom wall portion 20b of casing 20 and importing in the discharge opening 26 from annular spaces 36.Its result can stop the bubble that is present in pump chamber 21 top peripheries to flow into discharge opening 26 sides.That is,, flow into discharge opening 26 sides, spread all over the whole circumference of lid 22 like that and form so need not present embodiment because can suppress to be present in the bubble of the top periphery of pump chamber 21 for the spacing wall 37 of present embodiment.Yet, when only forming spacing wall 37 in the position relative with discharge opening 26, must make upstream side than the discharge opening 26 of this spacing wall 37 more near the inner peripheral surface of the side wall portion 20a of casing 20.Thus, in pump chamber 21, flow and the condensed water that contains bubble can not flow directly in the annular spaces 36.In addition, preferably its sectional shape forms the curved surface of semicircle shape etc., and the underpart that makes it possible to this spacing wall 37 does not hinder flowing smoothly of condensed water.
In addition, O shape circle 39 is installed between the spacing wall 37 of casing 20 and lid 22, spills to the outside from the telescoping part of casing 20 and lid 22 to prevent condensed water.
If having the drive motor 16 of the draining pump unit 10 of this structure starts working, then suck the rotation by mixing component 45 of existing condensed waters in the path 24 and be stirred, utilize its viscosity and in sucking path 24, begin rotation with mixing component 45 gradually.Utilization is along with condensed water is sucking path 24 inward turnings then the centrifugal force of generation, its water surface is depicted the three-dimensional parabolic of concavity on one side, cross on one side the upper end that sucks path 24 and rise slightly, make mainboard 42 and pin 43 be in the state that is immersed in the condensed water towards the bottom wall portion 20b of pump chamber 21.Enter into the condensed water in the pump chamber 21 like this, utilize the mainboard 42 of rotor rotated 23 and sell 43 and rotation more at high speed.Then, the space between the lower end of the bottom wall portion 20b of the part of condensed water by casing 20 and the spacing wall 37 of lid 22, and from the space 36 of ring-type to discharge opening 26 discharges.Along with the discharge of this condensed water, the new condensed water in the drain pan 28 is inhaled into and sucks in the path 24, and then the condensed water in the drain pan 28 is discharged to the outside by waste pipe 29 from discharge opening 26.In this case, because being the external diameter that rotating speed and maximum diameter thereof by rotor 23 are mainboard 42, the pressure difference of the radial center side of rotor 23 and radial outside end determined that therefore, the unloaded lift of this draining pump unit 10 also is determined naturally.Yet its water displacement is determined by the area that projects to the pin 43 on the face vertical with the sense of rotation of mainboard 42.
In the work of draining pump unit 10, the pin 43 of rotor 23 is to rotate with the high speed that is higher than the condensed water rotational speed.Therefore, when condensed water with respect to static pin 43 then when not observing in pump chamber 21 inward turnings, the condensed water that is present in around it more rearward flows down round the periphery of pin 43.Promptly, owing to be not the sort of big resistance that uses in the prior art and have with respect to the sense of rotation of impeller broad impeller plate of quadrature roughly, therefore, even for example be positioned at the pin 43 of rotor 23 most peripheral sides, can not produce cavitation erosion basically at the rear side of its sense of rotation yet.Its result can reduce the noise that causes because of cavitation erosion significantly.Particularly in the present embodiment, the mobile direction of the formed condensed water of first order group A by pin 43 and intercommunicating pore 44 are formed as its flowing state of modal representation as shown in Figure 11, roughly is miter angle with respect to radial direction.This flow direction makes condensed water have big kinetic energy.It is relative therewith,, by the flow direction of the formed condensed water of second order group B, as its flowing state of modal representation as shown in Figure 12, be roughly the circumferencial direction of mainboard 42, make condensed water have less kinetic energy.Its result utilizes these two kinds of condensed water to flow and can further improve defoaming effect.In addition, because the rotation peripheral speed of condensed waters compares with the rotation peripheral speed of condensed waters in the pump chamber 21 that it is quite slow in the suction pipe 25, so, also can not occur producing this unfavorable condition of cavitation erosion herein even if mixing component 45 has the impeller plate 45a of big resistance.In addition, the startup moment and the low lift moment in draining pump unit 10,, can stop bubble to be blended in the condensed water that discharge opening 26 sides are discharged owing on lid 22, be formed with spacing wall 37.In addition, also can eliminate the noise of bubble when discharge opening 26 sides are discharged.
There is no need the periphery of mainboard 42 is made with the axis of rotor shaft 40 is the positive circle at center, in addition, by with the sectional shape of the pin that face intercepted 43 of the axis normal of rotor shaft 40 except the roughly square of above-mentioned mode of execution, can also adopt different shape.For example, the plane shape of other mode of executions of the rotor among the present invention 23, bottom shape are respectively as Figure 13, shown in Figure 14.As Figure 13, shown in Figure 14, the peripheral shape of mainboard 42 can be become irregular gear shape.Perhaps, can adopt by the sectional shape that face intercepted with the axis normal of rotor shaft 40 is oval-shaped pin 43, and is configured to the circumferencial direction of its semi major axis direction along mainboard 42.In this case, utilize the jog that on the outer circumferential face of mainboard 42, forms, and can improve stirring action, improve ability as draining pump with respect to condensed water.Wherein, in Figure 13, Figure 14, to the element annotation same-sign mark of above-mentioned mode of execution identical function.
In the above-described embodiment, set the height of each pin 43 like this, the upper end of each pin 43 is positioned on the same horizontal plane.Therefore, in the rotation of rotor shaft 23, the water surface displacement of the condensed water in the pump chamber 21 is the mortar shape, and near the rotor shaft 40 surface in the top of the pin 43 of interior all sides, can't stir condensed water.Therefore, in Figure 15, express the cross-sectional configuration of the major component of rotor 23 other mode of executions of the present invention.Can obviously find out from Figure 15, highly set its height corresponding to the rotation water surface (representing with two dot and dash line among the figure) of the condensed water that forms in the pump chamber 21, make away from rotor shaft 40, the height of its pin 43 is high more, thereby can bring into play the effect of the pin of arranging at radial direction 43 effectively to greatest extent.Perhaps, in order to obtain same effect, also can tackle by following setting, that is, the area of the pin 43 of projection on the face vertical with respect to the sense of rotation of mainboard 42 is positioned at the radial direction inboard of rotor shaft 40, and this area of its pin 43 is more little.Specifically, for example, as shown in figure 16, near the pin 43 of rotor shaft 40, its taper angle theta becomes thin more coniform in big tip.
In the above-described embodiment, project upwards though sell 43 surface side from mainboard 42,, also can be as shown in Figure 17, pin 43 is outstanding downwards from the back side of mainboard 42.Under the situation of rotor 23 shown in Figure 17, form near the step-like of the more little the sort of minor diameter part 43a of the external diameter that lower end side has more near rotor shaft 40, makes pin 43.This pin 43 from the back side of mainboard 42 downwards the general arrangement of other mode of executions of outstanding draining pump of the present invention unit 10 as shown in figure 18, to representing with the element annotation same-sign of above-mentioned mode of execution identical function, and the repetitive description thereof will be omitted.That is, the rotor 23 of present embodiment, mainboard 42 forms in the mode near the base plate 33 of lid 22, and many pins 43 are outstanding to the bottom wall portion 20b of casing 20 from the back side of this mainboard 42.For each pin lower end of 43, be set to all sides of diametric(al) that pin 43 is positioned at rotor 23, pin 43 is long more from the outstanding length of mainboard 42, makes with about equally apart from the bottom wall portion 20b near casing 20.Under the situation of present embodiment, the mainboard 42 that is disposed by base plate 33 near lid 22, and can access bigger pin with respect to the rectification effect of the condensed water that attracted to pump chamber in 21.In the present embodiment, between the assembly department 11a of carriage 11 and joint 11b, be formed with the cylindrical part 11c that surrounds drive motor 16, the direction of propagation that can limit the noise that is produced by drive motor 16 thus.
In addition, can be not according to the such alignment arrangements pin 43 of arrangement group A, B and the intercommunicating pore 44 of above-mentioned mode of execution.Perhaps, pin 43 also can be outstanding from the two sides at the surperficial back side of mainboard 42.At all events plant situation, in order when guaranteeing draining pump unit 10 desired lifts and water displacement, to reduce vibration and noise, preferred its quantity and the layout suitably adjusted.Equally, mainboard 42 also can form parallel with the cone shape bottom wall portion 20b of forming of casing 20 coniform.
Claims (16)
1. a vertical shaft type centrifugal pump is characterized in that, comprising:
Rotor, casing, be installed on this casing and with this casing form the lid of the pump chamber of accommodating described rotor, at the outstanding discharge opening that is provided with and forms the suction pipe of the suction path that is communicated in described pump chamber lower center portion and on described casing, form and be communicated with described pump chamber on the described casing, wherein, described rotor comprises:
The upper end portion be connected in from the outside of described lid rotor shaft on the drive motor,
Be concentric shape be connected integratedly mainboard on this rotor shaft,
From this mainboard be roughly parallel to the axis of described rotor shaft and outstanding many pins and
The equal splenium that is communicated with the surface side and the back side of described mainboard.
2. vertical shaft type centrifugal pump as claimed in claim 1 is characterized in that:
Described rotor also has the mixing component of giving prominence to and be positioned at the suction path of described suction pipe from an end of its rotor shaft along the axis of this rotor shaft.
3. vertical shaft type centrifugal pump as claimed in claim 1 or 2 is characterized in that:
Described lid have outstanding downwards surround described rotor around and its with described casing inner wall between the spacing wall of formation annular spaces.
4. vertical shaft type centrifugal pump as claimed in claim 3 is characterized in that:
Described spacing wall is configured to relative with the discharge opening that forms on described casing and it is covered.
5. as each described vertical shaft type centrifugal pump in the claim 1～4, it is characterized in that:
On described lid, be formed with and be communicated with in the described pump chamber and the atmosphere outside access.
6. as each described vertical shaft type centrifugal pump in the claim 1～5, it is characterized in that:
Have the surface side of the described mainboard of connection and a plurality of intercommunicating pores of back side, and these intercommunicating pores work as described equal splenium.
7. vertical shaft type centrifugal pump as claimed in claim 6 is characterized in that:
Described pin and intercommunicating pore, its first order group and second order group are along the circumferential direction alternately arranged.
8. vertical shaft type centrifugal pump as claimed in claim 7 is characterized in that:
In described first order group, described pin and intercommunicating pore roughly along the first direction of described mainboard circumferencial direction and with the direction of its quadrature on arrange,
In described second order group, described pin and intercommunicating pore the direction that becomes miter angle to tilt with respect to described first direction and with the direction of its quadrature on arrange.
9. as each described vertical shaft type centrifugal pump in the claim 1～8, it is characterized in that:
Be set at the area of each described pin of projection on the face vertical with respect to the sense of rotation of described mainboard, be positioned at the described pin of the radial direction inboard of described rotor shaft, this area diminishes.
10. a pump rotor is characterized in that, comprising:
Rotor shaft,
Be concentric shape one be connected mainboard on this rotor shaft,
From this mainboard be roughly parallel to the axis of described rotor shaft and outstanding many pins and
The equal splenium that is communicated with the surface side and the back side of described mainboard.
11. pump rotor as claimed in claim 10 is characterized in that:
Also has the mixing component of giving prominence to along the axis of this rotor shaft from an end of described rotor shaft.
12., it is characterized in that as claim 10 or 11 described pump rotors:
Have the surface side of the described mainboard of connection and a plurality of intercommunicating pores of back side, and these intercommunicating pores work as described equal splenium.
13. pump rotor as claimed in claim 12 is characterized in that:
Described pin and intercommunicating pore, its first order group and second order group are alternately arranged along circumferencial direction.
14. pump rotor as claimed in claim 13 is characterized in that:
In described first order group, described pin and intercommunicating pore roughly along the first direction of described mainboard circumferencial direction and with the direction of its quadrature on arrange,
In described second order group, described pin and intercommunicating pore the direction that becomes miter angle to tilt with respect to described first direction and with the direction of its quadrature on arrange
15., it is characterized in that as each described pump rotor in the claim 10～14:
Be set at the area of each described pin of projection on the face vertical with respect to the sense of rotation of described rotor shaft, be positioned at the described pin of the radial direction inboard of described rotor shaft, this area diminishes.
16. an aircondition is characterized in that:
Each described vertical shaft type centrifugal pump is installed in the claim 1～9 as draining pump.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP288850/2004 | 2004-09-30 | ||
| JP2004288850 | 2004-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101031723A true CN101031723A (en) | 2007-09-05 |
| CN100451342C CN100451342C (en) | 2009-01-14 |
Family
ID=36118870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800333155A Expired - Fee Related CN100451342C (en) | 2004-09-30 | 2005-09-26 | Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4680922B2 (en) |
| KR (1) | KR100970822B1 (en) |
| CN (1) | CN100451342C (en) |
| WO (1) | WO2006035724A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939357A (en) * | 2013-01-23 | 2014-07-23 | 株式会社鹭宫制作所 | Centrifugal pump |
| WO2015000153A1 (en) * | 2013-07-03 | 2015-01-08 | Li Lin | Conical rotor pump |
| CN104421167A (en) * | 2013-09-10 | 2015-03-18 | 株式会社鹭宫制作所 | Drainage pump |
| CN105805018A (en) * | 2015-01-17 | 2016-07-27 | 株式会社鹭宫制作所 | Centrifugal pump |
| CN106870445A (en) * | 2015-12-10 | 2017-06-20 | 株式会社鹭宫制作所 | Pump rotor and possesses the draining pump of the pump rotor |
| CN109424548A (en) * | 2017-08-30 | 2019-03-05 | 株式会社鹭宫制作所 | Draining pump and air conditioner |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI612221B (en) * | 2016-08-09 | 2018-01-21 | Drain pump for air conditioning unit | |
| KR102405913B1 (en) * | 2021-10-15 | 2022-06-07 | 권진형 | Impeller preventing cavitation by a dummy protrusion, and a pump having the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110445B1 (en) * | 1970-03-03 | 1976-04-03 | ||
| JP3524611B2 (en) * | 1995-02-06 | 2004-05-10 | 株式会社不二工機 | Drainage pump |
| JP2925076B2 (en) * | 1997-01-17 | 1999-07-26 | 太産工業株式会社 | Drainage pump |
| JP4012667B2 (en) * | 2000-06-13 | 2007-11-21 | 日本電産サンキョー株式会社 | Pump device |
| JP3511044B2 (en) * | 2000-06-21 | 2004-03-29 | 株式会社鷺宮製作所 | Drain drain pump |
| JP3723556B2 (en) | 2003-05-27 | 2005-12-07 | 株式会社鷺宮製作所 | Vertical shaft centrifugal pump and pump impeller |
| JP3711998B2 (en) * | 2003-12-05 | 2005-11-02 | ダイキン工業株式会社 | Drain pump and air conditioner equipped with the same |
-
2005
- 2005-09-26 WO PCT/JP2005/017641 patent/WO2006035724A1/en active Application Filing
- 2005-09-26 KR KR1020077005525A patent/KR100970822B1/en active IP Right Grant
- 2005-09-26 CN CNB2005800333155A patent/CN100451342C/en not_active Expired - Fee Related
- 2005-09-26 JP JP2006537728A patent/JP4680922B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939357A (en) * | 2013-01-23 | 2014-07-23 | 株式会社鹭宫制作所 | Centrifugal pump |
| WO2015000153A1 (en) * | 2013-07-03 | 2015-01-08 | Li Lin | Conical rotor pump |
| CN104421167A (en) * | 2013-09-10 | 2015-03-18 | 株式会社鹭宫制作所 | Drainage pump |
| CN104421167B (en) * | 2013-09-10 | 2019-04-02 | 株式会社鹭宫制作所 | Drainage pump |
| CN105805018A (en) * | 2015-01-17 | 2016-07-27 | 株式会社鹭宫制作所 | Centrifugal pump |
| CN105805018B (en) * | 2015-01-17 | 2019-03-29 | 株式会社鹭宫制作所 | Centrifugal pump |
| CN106870445A (en) * | 2015-12-10 | 2017-06-20 | 株式会社鹭宫制作所 | Pump rotor and possesses the draining pump of the pump rotor |
| CN109424548A (en) * | 2017-08-30 | 2019-03-05 | 株式会社鹭宫制作所 | Draining pump and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4680922B2 (en) | 2011-05-11 |
| KR20070058489A (en) | 2007-06-08 |
| JPWO2006035724A1 (en) | 2008-05-15 |
| CN100451342C (en) | 2009-01-14 |
| WO2006035724A1 (en) | 2006-04-06 |
| KR100970822B1 (en) | 2010-07-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 |