CN103089653A - Rotor pump and rotary machine including the same - Google Patents
Rotor pump and rotary machine including the same Download PDFInfo
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- CN103089653A CN103089653A CN2011103551996A CN201110355199A CN103089653A CN 103089653 A CN103089653 A CN 103089653A CN 2011103551996 A CN2011103551996 A CN 2011103551996A CN 201110355199 A CN201110355199 A CN 201110355199A CN 103089653 A CN103089653 A CN 103089653A
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Abstract
The present invention relates to a rotary pump (100) and a rotary machine (200) including the same. The rotor pump includes: a pump body (40) having a substantially cylindrical inner circumference and provided with a recess (42) on the inner circumference; a pump wheel (50) disposed within the pump body and having a generally cylindrical outer circumference, the outer circumference of the pump wheel being provided with a projection (52) which is a sliding fit in the recess such that the pump wheel can pivot about a contact point between the projection and the recess; and a seal plate (60) which is provided on one side of the pump body and the impeller, and in which an inlet (61) for the fluid to enter and an outlet (62) for the fluid to be discharged are provided, wherein the inlet and the outlet are provided such that at least one of the inlet and the outlet is completely covered by an end surface of the impeller when the rotor pump is in a neutral position in which an outer circumference of the impeller is in contact with an inner side of the pump body on both sides of the recess.
Description
Technical field
The rotating machinery that the present invention relates to a kind of rotor pump and comprise rotor pump.
Background technique
The rotor that rotor pump generally includes the pump housing and is arranged in the pump housing and can rotates with respect to the pump housing.Between the pump housing and rotor, be formed with active chamber.Along with the motion of rotor, the volume of active chamber changes, thereby realizes pumping procedure so that fluid sucks and discharge active chamber.Yet, in this rotor pump, when rotor is in special position with respect to the pump housing, thereby the fluid that fluid suction passage and fluid expulsion passage may communicate with each other after causing compressing refluxes (also can be described as leakage), has therefore reduced the working efficiency of rotor pump.
Therefore, need to improve rotor pump of the prior art, effectively preventing rotor pump in the leakage of run duration, thereby improve the working efficiency of rotor pump.
Summary of the invention
The technical problem to be solved in the present invention
As mentioned above, in existing rotor pump, when rotor pump ran to a certain special position, the fluid after the compression may be back to fluid input and cause fluid leakage from fluid output, and this has reduced the working efficiency of rotor pump.
Therefore, need a kind of rotor pump run duration that can effectively prevent the rotor pump that leaks to occur.
Technological scheme
An one or more embodiments' of the present invention purpose provides a kind of rotor pump that can prevent effectively that fluid from refluxing from outlet to entrance.
Another purpose of one or more embodiments of the present invention provides a kind of rotating machinery that comprises this rotor pump.
An aspect of this specification provides a kind of rotor pump, comprising: the pump housing, the described pump housing have the inner circumference of substantial cylindrical and are provided with recess at described inner circumference; Pump impeller, described pump impeller is arranged in the described pump housing and the excircle with substantial cylindrical, be provided with projection on the excircle of described pump impeller, described projection is engaged in the described recess slidably so that described pump impeller can pivot by the point of contact between described projection and described recess; And sealing plate, described sealing plate is arranged on a side of the described pump housing and described pump impeller, and be provided with the entrance that enters for fluid and the outlet that supplies fluid expulsion in the described sealing plate, it is characterized in that: described entrance and described outlet are arranged so that at least one in the described entrance and described outlet covered fully by the end face of described pump impeller when described rotor pump is in a neutral position, wherein at described neutral position, the excircle of described pump impeller and the inboard of the described pump housing are in described recess contact both sides.
Preferably, at described neutral position, the excircle of described pump impeller contacts at described recess two side lines with the inboard of the described pump housing.
Preferably, when described rotor pump was in other working positions except described neutral position, at least a portion of described entrance and at least a portion of described outlet were exposed from the end face of described pump impeller.
Preferably, when described rotor pump was in described neutral position, the two was all covered described entrance and described outlet fully by the end face of described pump impeller.
Preferably, the two is the elongated open that arranges along the circumferencial direction of the described pump housing for described entrance and described outlet, and when described rotor pump was in described neutral position, the two was covered described entrance and described outlet fully by the end face of described pump impeller.
Preferably, described entrance is the identical circular hole of size with described outlet, and when described rotor pump was in described neutral position, the two was covered described entrance and described outlet fully by the end face of described pump impeller.
Preferably, one in described entrance and the described outlet is relatively large circular hole, in described entrance and the described outlet another is the circular hole of less, and when described rotor pump was in described neutral position, the circular hole of described less was covered fully by the end face of described pump impeller.
Preferably, one in described entrance and the described outlet is circular hole, in described entrance and the described outlet another is the elongated open along the circumferencial direction setting of the described pump housing, and when described rotor pump was in described neutral position, described elongated open was covered fully by the end face of described pump impeller.
Preferably, described entrance and described outlet are arranged in both sides and the contiguous described recess of described recess symmetrically.
Preferably, the described pump housing and described sealing plate form as one.
Preferably, the described pump housing with described entrance and described outlet at least one corresponding position be provided with groove.
Preferably, described rotor pump also comprise be arranged on described sealing plate the cover plate of opposite side, wherein, described sealing plate further comprises central through bore, is provided with the through hole that is communicated with described inlet fluid on the described cover plate and so that the guide groove of described outlet and described central through bore fluid communication with each other.
Preferably, the outer surface of the described pump housing and described sealing plate be provided with accordingly respectively locating slot on the outer surface, be provided with locating stud on the described cover plate, described locating stud can be engaged in the described locating slot.
Preferably, described rotor pump also comprises the thrust plate that is arranged on the described pump housing and described pump impeller opposite side.
Another aspect of this specification provides a kind of rotating machinery that comprises above-mentioned rotor pump.
Preferably, described rotating machinery further comprises: shell is arranged on the driving mechanism in the described shell; By the live axle that described driving mechanism drives, wherein, an end of described live axle has cam pin, and described cam pin inserts in the drive hole of pump impeller of described rotor pump.
Preferably, be provided with oilhole in the described live axle, described oilhole is communicated with the described outlet fluid of described rotor pump.
Preferably, described rotating machinery is compressor, particularly scroll compressor.
Beneficial effect
Advantage according to one or more embodiments' of the present invention rotor pump is:
Entrance and exit on the sealing plate is arranged so that at least one in the described entrance and described outlet covered fully by the end face of pump impeller when rotor pump is in neutral position.Therefore, blocked by the end face of pump impeller from the leakage way that is exported to entrance, thereby can prevent effectively that fluid from refluxing to entrance from outlet.Therefore, the working efficiency of rotor pump of the present invention and fluid delivery capability are improved.
Only need the layout of the entrance and exit on the sealing plate of existing rotor pump is changed according to rotor pump of the present invention, need not other structures of rotor pump are changed, therefore can easily come to improve existing rotor pump performance by replacing sealing plate, and need not extra cost.
By improving the layout of sealing plate upper inlet and outlet, can save the groove corresponding with entrance and exit that arranges on the pump housing inner circumference of existing rotor pump, therefore can further simplify the structure of the pump housing of rotor pump, thereby further reduce the cost of rotor pump.
In the rotating machinery that has adopted rotor pump of the present invention, because the leakage of rotor pump is prevented from and working efficiency is enhanced, therefore can stablize, provide lubricant oil reliably to each movable part of rotating machinery, reduce the fault that rotating machinery occurs because of lack of lubrication.
Description of drawings
By the description referring to accompanying drawing, it is easier to understand that one or several embodiment's of the present invention feature and advantage will become, wherein:
Fig. 1 is a kind of exploded perspective view of rotor pump;
Fig. 2 A to Fig. 2 D is the working principle schematic representation of rotor pump shown in Figure 1, and wherein pump impeller is in diverse location with respect to the pump housing;
Fig. 2 E is the partial enlarged drawing of part I among Fig. 2 D;
Fig. 3 is the exploded perspective view according to the rotor pump of first embodiment of the invention;
Fig. 4 A to Fig. 4 E is that wherein pump impeller is in diverse location with respect to the pump housing according to the schematic representation of the working procedure of the rotor pump of embodiment of the present invention;
Fig. 5 A to Fig. 5 E is the floor map of the rotor pump of other mode of executions according to the present invention; And
Fig. 6 is the schematic cross sectional view of compressor of having used the rotor pump of embodiment of the present invention.
Embodiment
Following description related to the preferred embodiment only is exemplary, and never is the restriction to the present invention and application or usage.
Fig. 1 shows the exploded perspective view of the known a kind of rotor pump 100 ' of claimant.But, it should be noted, shown in Fig. 1 and rotor pump 100 ' described below needn't necessarily consist of prior art of the present invention.
Rotor pump 100 ' mainly comprises housing 10 ', the pump housing 40 ', pump impeller 50 ', sealing plate 60 ', cover plate 70 ' and thrust plate 80 '.The pump housing 40 ' is arranged in the housing and the inner circumference with substantial cylindrical, and pump impeller 50 ' is arranged in the pump housing 40 ' and the excircle with substantial cylindrical.Be provided with recess 42 ' in the inner circumference of the pump housing 40 ', and be provided with projection 52 ' on the excircle of pump impeller 50 '.The middle part of pump impeller 50 ' also is provided with the drive hole 54 ' for the cam pin driving of live axle.The projection 52 ' of pump impeller 50 ' is engaged in the recess 42 ' of the pump housing 40 ', thereby the drive hole 54 ' that inserts pump impeller 50 ' when the cam pin of the live axle of external drive source is when driving pump impeller 50 ', and the projection 52 ' of pump impeller 50 ' can be slided in the recess 42 ' of the pump housing 40 ' and the pivot of the point of contact between projection 52 ' and recess 42 '.In the process that pump impeller 50 ' rotates, the point of contact of the excircle of pump impeller 50 ' and the inner circumference of the pump housing 40 ' moves along pump impeller 50 ' driven direction, the realization fluid pumping thereby the volume that causes the active chamber of formation between pump impeller 50 ' and the pump housing 40 ' gradually changes, this will describe in detail with reference to Fig. 2 A-2D below.
Side at pump impeller 50 ' is provided with sealing plate 60 '.Simultaneously referring to Fig. 2 A, sealing plate 60 ' and the inner circumference pump housing 40 ' roughly corresponding position are provided with the entrance 61 ' that enters for fluid and the outlet 62 ' of confession fluid expulsion.Entrance 61 ' and outlet 62 ' are separately positioned on the both sides of recess 42 ' and arrange near recess 42 '.On the core of sealing plate 60 ', also be provided with central through bore 64 '.Cover plate 70 ' is arranged on a side of sealing plate 60 ' and fits together with housing 10 '.Be provided with in the cover plate 70 ' and be communicated with the entrance 61 ' of sealing plate 60 ' with the through hole 71 ' of introducing external fluid and so that the outlet 62 ' of sealing plate 60 ' and guide groove 72 ' that central through bore 64 ' communicates with each other.Thrust plate 80 ' is arranged on the opposite side of pump impeller 50 ' to prevent pump impeller 50 ' axial displacement.
The working principle of Fig. 1 rotor pump is described below with reference to Fig. 2 A to Fig. 2 D.Suppose that pump impeller 50 ' is driven along the direction of arrow in the figure.Referring to Fig. 2 A, between the excircle of the inner circumference of the pump housing 40 ' and pump impeller 50 ', define the active chamber 20 ' of rotor pump.Particularly, the active chamber that is communicated with the entrance 61 ' of sealing plate 60 ' is called suction chamber 22 ', and the active chamber that is communicated with the outlet 62 ' of sealing plate 60 ' is called discharge side 24 '.Suction chamber 22 ' and discharge side 24 ' separate by the point of contact CP between the pump housing 40 ' and the pump impeller 50 '.
In normal operation, external fluid is passed through hole 71 ' in the cover plate 70 ' and the entrance 61 ' in the sealing plate 60 ' enters suction chamber 22 ', and discharge through the outlet 62 ' in the sealing plate 60 ', the guide groove 72 ' in the cover plate 70 ' and the central through bore 64 ' that finally passes through in the sealing plate 60 ' through the fluid of overcompression, for example, be discharged in the through hole that arranges in the live axle of external drive source.
Under the state shown in Fig. 2 A, suction chamber 22 ' is less, and discharge side 24 ' is larger.Shown in Fig. 2 B and Fig. 2 C, along with pump impeller along the direction rotation shown in the arrow, suction chamber 22 ' becomes greatly to realize the pumping fluid action gradually; And discharge side 24 ' diminishes gradually, so extrusion fluid is discharged from exporting 62 '.
Yet, when pump impeller 50 ' moves to working position shown in Fig. 2 D when (hereinafter this position being called " neutral position "), because there are two point of contact CP in the existence of recess 42 ' between the pump housing 40 ' and the pump impeller 50 ', and the both sides of these two point of contact CP next-door neighbour recesses 42 '.Simultaneously, under the described state of Fig. 2 D, suction chamber 22 ' and discharge side 24 ' communicate with each other, therefore the fluid that is in high pressure after compressed may turn back to entrance 61 ' via active chamber 20 ' from exporting 62 ', cause rotor pump 100 ' fluid leakage, this has reduced the working efficiency of rotor pump.
Fig. 2 E is the partial enlarged drawing of part I among Fig. 2 D.From Fig. 2 E, can clearly be seen that near the fluid leakage passage L that forms the entrance 61 '.In like manner, near outlet 62 ', also there is similar fluid leakage passage.
Because the rotating speed of such rotor pump delivery and rotor pump is closely related, therefore when the rotating speed of rotor pump hangs down, because reducing, the rotor pump delivery that this leakage causes to cause using the equipment of this rotor pump more serious fault to occur.Such as, when this rotor pump being applied in the compressor with pumping lubricant oil, when compressor during with low cruise, owing to descending, the rotor pump delivery may cause that compressor lubrication is not enough to break down.
In order to prevent the leakage in the above-mentioned rotor pump, the application's claimant improves this rotor pump.The below is with reference to the essential structure of Fig. 3-4E description according to the rotor pump of first embodiment of the invention.Should be noted in the discussion above that below the general is described for the difference of embodiment of the present invention and above-mentioned rotor pump in further detail, may omit with the content of its repetition.
As shown in Figure 3, the rotor pump 100 according to first embodiment of the invention mainly comprises the pump housing 40, pump impeller 50 and sealing plate 60.The pump housing 40 has the inner circumference of substantial cylindrical, and pump impeller 50 is arranged in the pump housing 40 and the excircle with substantial cylindrical.The pump housing 40 and pump impeller 50 have the roughly the same thickness length of pump impeller 50 spin axis directions (that is, along).Be provided with recess 42 in the inner circumference of the pump housing 40, and be provided with projection 52 on the excircle of pump impeller 50.The projection 52 of pump impeller 50 is engaged in the recess 42 of the pump housing 40.Recess 42 has straight wall, and projection 52 has for example wall of projection, thereby when from plan view, observing, can realize a contact (perhaps between recess 42 and the projection 52, the two can realize the line contact in stereogram) so that projection 52 can be slided in recess 42 and pivot around the point of contact between the two.The structure that it should be appreciated by those skilled in the art that projection 52 and recess 42 is not limited to example shown in the figure, and they can adopt so that can relative sliding between the two and any other structure of pivot.
The middle part of pump impeller 50 also is provided with the drive hole 54 for the cam pin driving of live axle.The drive hole 54 that inserts pump impeller 50 when the cam pin of the live axle of external drive source is when driving pump impeller 50, and the projection 52 of pump impeller 50 can be slided in the recess 42 of the pump housing 40 and the pivot of the point of contact between projection 52 and recess 42.In the process that pump impeller 50 rotates, the point of contact of the inner circumference of the excircle of pump impeller 50 and the pump housing 40 moves along pump impeller 50 driven directions, the realization fluid pumping thereby the volume that causes the active chamber of formation between pump impeller 50 and the pump housing 40 gradually changes, this will describe in detail with reference to Fig. 4 A-4E below.
Side at pump impeller 50 is provided with sealing plate 60.Simultaneously referring to Fig. 4 A, sealing plate 60 and inner circumference pump impeller 40 roughly corresponding position are provided with the entrance 61 that enters for fluid and the outlet 62 of confession fluid expulsion.Entrance 61 and outlet 62 are separately positioned on the both sides of recess 42 and close on recess 42 and arrange.On the core of sealing plate 60, also be provided with central through bore 64.Side at sealing plate 60 is provided with cover plate 70.Be provided with the through hole 71 and so that the guide groove 72 that the outlet 62 of sealing plate 60 and central through bore 64 communicate with each other that are communicated with to introduce external fluid with the entrance 61 of sealing plate 60 in the cover plate 70.Opposite side at the pump housing 40 and pump impeller 50 is provided with thrust plate 80 to prevent pump impeller 50 axial displacements.
Below with reference to the working principle of Fig. 4 A to Fig. 4 E description according to the rotor pump 100 of embodiment of the present invention.Suppose that pump impeller 50 is driven along the direction of arrow in the figure.Referring to Fig. 4 A, between the excircle of the inner circumference of the pump housing 40 and pump impeller 50, define the active chamber 20 of rotor pump.In addition, because pump impeller 50 and the pump housing 40 have roughly the same thickness and are respectively arranged with sealing plate 60 and thrust plate 80 in the both sides of pump impeller 50 and the pump housing 40, so active chamber 20 is limited by the inner circumference of the pump housing 40, the excircle of pump impeller 50, the side of sealing plate 60 and the side of thrust plate 80 particularly.Particularly, the active chamber that is communicated with the entrance 61 of sealing plate 60 is called suction chamber 22, and the active chamber that is communicated with the outlet 62 of sealing plate 60 is called discharge side 24.Suction chamber 22 and discharge side 24 separate by the point of contact CP between the pump housing 40 and the pump impeller 50.
In normal operation, external fluid is passed through hole 71 in the cover plate 70 and the entrance 61 in the sealing plate 60 enters suction chamber 22, and discharge through the outlet 62 in the sealing plate 60, the guide groove 72 in the cover plate 70 and the central through bore 64 that finally passes through in the sealing plate 60 through the fluid of overcompression, for example, be discharged in the through hole that arranges in the live axle of external drive source.
It should be appreciated by those skilled in the art that embodiments of the present invention are not limited to foregoing description.For example, can save the central through bore 64 of cover plate 70 and sealing plate 60.In this case, can adopt being communicated with of other constitution realization entrances 61 and external source of fluid, and can directly guide to application apparatus from exporting 62 fluids of discharging.
Under the state shown in Fig. 4 A, suction chamber 22 is less, and discharge side 24 is larger.Shown in Fig. 4 B, 4C and 4D, along with pump impeller 50 along the direction rotation shown in the arrow, suction chamber 22 becomes greatly to realize the pumping fluid action gradually; And discharge side 24 diminishes gradually, so extrusion fluid is discharged from exporting 62.Along with the rotation of pump impeller 50, the point of contact between pump impeller 50 and the pump housing 40 also moves along the inner circumference of the pump housing 40.
When pump impeller 50 moves to working position shown in Fig. 4 E when (hereinafter this position being called " neutral position "), because the existence of recess 42, there are two point of contact CP between the pump housing 40 and the pump impeller 50, and the both sides of these two point of contact CP next-door neighbour recesses 42.In other words, at the neutral position of rotor pump, the excircle of pump impeller 50 contacts at two some places with the inner circumference of the pump housing 40 in recess 42 both sides.And under the state shown in Fig. 4 E, suction chamber 22 and discharge side 24 communicate with each other.
Yet in the rotor pump 100 according to embodiment of the present invention, entrance on the sealing plate 60 61 and outlet 62 are arranged so that at least one in the entrance 61 and outlet 62 covered fully by the end face of pump impeller 50 institute when rotor pump 100 is in neutral position.In this case, with the high-pressure liquid of outlet in 62 discharge routes that are connected to suction channel that entrance 61 is connected in the leakage of low-pressure fluid blocked by the end face of pump impeller 50, even therefore suction chamber 22 and discharge side 24 communicate with each other, the high-pressure liquid that exports 62 sides also can not or leak into entrance 61 sides via the suction chamber 22 that communicates with each other and discharge side 24 backflows.
In other words, by the entrance 61 on the sealing plate 60 and outlet 62 being arranged so that at least one in the entrance 61 and outlet 62 covered by the end face of pump impeller 50 when rotor pump 100 is in neutral position, effectively prevent the leakage in the rotor pump, improved the working efficiency of rotor pump.
In addition, can find out from Fig. 4 A-4D, when rotor pump is in other working positions except neutral position, at least a portion of at least a portion of entrance 61 on the sealing plate 60 and outlet 62 is exposed from the end face of pump impeller 50, thereby entrance 61 is communicated with suction chamber 22, outlet 62 and discharge side 24 circulations are so that rotor pump can suck and discharge fluid.
Preferably, the two is all covered by the end face of pump impeller 50 entrance 61 on the sealing plate 60 and outlet 62 can be arranged so that when rotor pump 100 is in neutral position entrance 61 and outlet 62.
In addition, in the preferred implementation of Fig. 4 A to Fig. 4 E, the entrance 61 of sealing plate 60 and outlet 62 all are configured to along the elongated open of all circumferencial direction settings of the pump housing 40.Adopt this mode, can increase fluid by the flow area of entrance 61 and outlet 62, thereby improve the fluid delivery capability of rotor pump.In addition, entrance 61 and outlet 62 are arranged in symmetrically the both sides of recess 42 and close on recess 42 and arrange.Like this, the suction chamber of rotor pump and the actual volume of discharge side can be increased, thereby the fluid delivery capability of rotor pump can be further improved.
Adopt the rotor pump 100 of embodiment of the present invention, compare with rotor pump 100 ' shown in Figure 1, the design that only needs to change the entrance and exit on the sealing plate gets final product, and need not the miscellaneous part of rotor pump 100 ' shown in Figure 1 is made any change.Therefore, can easily design of the present invention be applied to existing rotor pump shown in Figure 1, and can not increase any extra cost.In addition, in the situation that adopts the described sealing plate structure of Fig. 3-4, can save the groove corresponding with entrance and exit that arranges on the pump housing 40 ' inner circumference of the described rotor pump 100 ' of Fig. 1, therefore can further simplify the structure of the pump housing of rotor pump, thereby further reduce the cost of rotor pump.
Fig. 3-4E shows the structure of one embodiment of the present invention, those skilled in the art should understand that to the invention is not restricted to above-mentioned structure, but can adopt many other modification.
Fig. 5 A to Fig. 5 E shows the floor map of the rotor pump of other mode of executions according to the present invention.
In the mode of execution of Fig. 5 A, the entrance 61 on the sealing plate 60 all is designed to the identical circular hole of size with outlet 62.And when rotor pump was in neutral position, the circular hole that these two sizes are identical was all covered fully by the end face of pump impeller 50 institute.
In the mode of execution of Fig. 5 B, the entrance 61 on the sealing plate 60 is designed to be designed to large circular hole along the elongated open of the circumferencial direction setting of the pump housing 40 and export 62.When rotor pump was in neutral position, entrance 61 was covered fully by the end face of pump impeller 50 institute, was covered by the end face of pump impeller 50 and export a part of 62.
In the mode of execution of Fig. 5 C, the entrance 61 on the sealing plate 60 is designed to little circular hole, is designed to large circular hole and export 62.When rotor pump was in neutral position, entrance 61 was covered fully by the end face of pump impeller 50 institute, was covered by the end face of pump impeller 50 and export a part of 62.
In the mode of execution of Fig. 5 D, the entrance 61 on the sealing plate 60 is designed to large circular hole, is designed to along the elongated open of the circumferencial direction setting of the pump housing 40 and export 62.When rotor pump was in neutral position, the part of entrance 61 was covered by the end face of pump impeller 50, and exported 62 by the fully covering of the end face of pump impeller 50 institute.
In the mode of execution of Fig. 5 E, the entrance 61 on the sealing plate 60 is designed to large circular hole, is designed to little circular hole and export 62.When rotor pump was in neutral position, the part of entrance 61 was covered by the end face of pump impeller 50, and exported 62 by the fully covering of the end face of pump impeller 50 institute.
In addition, in the illustrated embodiment, the pump housing 40 is two parts that separate with sealing plate 60.It should be appreciated by those skilled in the art that the pump housing 40 and sealing plate 60 also can form as one.
In addition, the pump housing 40 is with the entrance 61 of sealing plate 60 and at least one the corresponding position in the outlet 62 groove 41 (seeing Fig. 3 and 4A) being set, to increase the volume of suction chamber and/or discharge side.
The pump housing 40 and sealing plate 60 can be provided with locating slot 46 and 66 accordingly on its periphery, can locating stud 73 be set so that the pump housing 40 and sealing plate 60 are aimed at cover plate 70, are convenient to the assembling of rotor pump.
The claimant has carried out actual test to rotor pump of the present invention.Particularly, use POE32MAF oil, under 27 ℃ the temperature and the rotational speed of the live axle of external drive source be the fluid pumping height of test rotor pump of the present invention and rotor pump shown in Figure 1 in the situation of 60rpm.Test result is: the fluid pumping height of rotor pump of the present invention can be greater than 1200mm, and the fluid pumping height of rotor pump shown in Figure 1 is about 850mm.Can be found out that by test result rotor pump of the present invention is owing to effectively prevented fluid leakage, its fluid delivery capability is significantly improved.
The below is described in detail the compressor of using rotor pump of the present invention with reference to Fig. 6.
In the running of compressor 200, rotation along with live axle 240, pump impeller 50 moves in the pump housing 40 as pivoting around the point of contact between projection 52 and the recess 42, thereby the lubricant oil of shell 210 bottoms enters suction chamber 22 by the entrance 61 of the through hole 71 in the cover plate 70, sealing plate 60, after compressed, lubricant oil enters in the guide groove 72 of cover plate 70 via the outlet 62 of sealing plate 60, central through bore 64 by sealing plate 60 is discharged in the oilhole 244 of live axle 240 subsequently, realizes lubricating each movable part of compressor.
The structure of the miscellaneous part of compressor 200 and working principle can be referring to such as US2009/0068044A1, US2009/0068048A1 and US2009/0068045A etc., and the full content of these documents is incorporated this paper by reference into.
Fig. 6 shows the application of rotor pump of the present invention as an example of compressor example.It should be appreciated by those skilled in the art that rotor pump of the present invention can also be applied to many other need pumping fluid such as the rotating machinery of lubricant oil.In addition, Fig. 6 shows the application of rotor pump as an example of scroll compressor example, it should be appreciated by those skilled in the art that other similar compressors can adopt rotor pump of the present invention.
Although described various mode of execution of the present invention in detail at this, but should be appreciated that the present invention is not limited to the embodiment of describing in detail and illustrating here, in the situation that does not depart from the spirit and scope of the invention, can be realized by those skilled in the art other modification and variant.All these modification and variant all fall within the scope of the present invention.And all members described here can be replaced by the member that is equal on the other technologies.
Claims (19)
1. a rotor pump (100) comprising:
The pump housing (40), the described pump housing (40) have the inner circumference of substantial cylindrical and are provided with recess (42) at described inner circumference;
Pump impeller (50), described pump impeller (50) is arranged in the described pump housing (40) and the excircle with substantial cylindrical, be provided with projection (52) on the excircle of described pump impeller (50), described projection (52) is engaged in the described recess (42) slidably so that described pump impeller (50) can pivot by the point of contact between described projection (52) and described recess (42); And
Sealing plate (60), described sealing plate (60) is arranged on a side of the described pump housing (40) and described pump impeller (50), and be provided with the entrance (61) that enters for fluid and the outlet (62) that supplies fluid expulsion in the described sealing plate (60)
It is characterized in that: described entrance (61) and described outlet (62) be arranged so that when described rotor pump (100) when being in a neutral position at least one in described entrance (61) and the described outlet (62) covered fully by the end face of described pump impeller (50), wherein at described neutral position, the inboard of the excircle of described pump impeller (50) and the described pump housing (40) is in described recess (42) contact both sides.
2. rotor pump as claimed in claim 1, wherein, at described neutral position, the excircle of described pump impeller (50) contacts at described recess (42) two side lines with the inboard of the described pump housing (40).
3. rotor pump as claimed in claim 1, wherein, when described rotor pump (100) was in other working positions except described neutral position, at least a portion of at least a portion of described entrance (61) and described outlet (62) was exposed from the end face of described pump impeller (50).
4. rotor pump as claimed in claim 1, wherein, when described rotor pump (100) when being in described neutral position, the two is all covered described entrance (61) and described outlet (62) fully by the end face of described pump impeller (50).
5. rotor pump as claimed in claim 1, wherein, the two is the elongated open that arranges along the circumferencial direction of the described pump housing (40) for described entrance (61) and described outlet (62), and when described rotor pump (100) when being in described neutral position, the two is covered described entrance (61) and described outlet (62) fully by the end face of described pump impeller (50).
6. rotor pump as claimed in claim 1, wherein, described entrance (61) is the identical circular hole of size with described outlet (62), and when described rotor pump (100) when being in described neutral position, the two is covered described entrance (61) and described outlet (62) fully by the end face of described pump impeller (50).
7. rotor pump as claimed in claim 1, wherein, one in described entrance (61) and the described outlet (62) is relatively large circular hole, in described entrance (61) and the described outlet (62) another is the circular hole of less, and when described rotor pump (100) when being in described neutral position, the circular hole of described less is covered fully by the end face of described pump impeller (50).
8. rotor pump as claimed in claim 1, wherein, one in described entrance (61) and the described outlet (62) is circular hole, in described entrance (61) and the described outlet (62) another is the elongated open along the circumferencial direction setting of the described pump housing (40), and when described rotor pump (100) when being in described neutral position, described elongated open is covered fully by the end face of described pump impeller (50).
9. rotor pump as claimed in claim 1, wherein, described entrance (61) and described outlet (62) are arranged in both sides and the contiguous described recess (42) of described recess (42) symmetrically.
10. such as each described rotor pump among the claim 1-9, wherein, the described pump housing (40) and described sealing plate (60) form as one.
11. such as each described rotor pump among the claim 1-9, wherein, the described pump housing (40) with described entrance (61) and described outlet (62) at least one corresponding position be provided with groove (41).
12. such as each described rotor pump among the claim 1-9, also comprise the cover plate (70) of the opposite side that is arranged on described sealing plate (60),
Wherein, described sealing plate (60) further comprises central through bore (64),
Be provided with the through hole (71) and so that the guide groove (72) of described outlet (62) and described central through bore (64) fluid communication with each other that are communicated with described entrance (61) fluid on the described cover plate (70).
13. rotor pump as claimed in claim 12, wherein, be provided with accordingly respectively locating slot (46 on the outer surface of the outer surface of the described pump housing (40) and described sealing plate (60), 66), be provided with locating stud (73) on the described cover plate (70), described locating stud (73) can be engaged in the described locating slot (46,66).
14. such as each described rotor pump among the claim 1-9, also comprise the thrust plate (80) that is arranged on the described pump housing (40) and described pump impeller (50) opposite side.
15. a rotating machinery comprises such as each described rotor pump among the claim 1-14.
16. rotating machinery as claimed in claim 15 further comprises:
Shell (210),
Be arranged on the driving mechanism (230) in the described shell (210);
By the live axle (240) of described driving mechanism (230) driving,
Wherein, an end of described live axle (240) has cam pin (242), and described cam pin (242) inserts in the drive hole (54) of pump impeller (50) of described rotor pump (100).
17. rotating machinery as claimed in claim 16 wherein, is provided with oilhole (244) in the described live axle (240), described oilhole (244) is communicated with described outlet (62) fluid of described rotor pump (100).
18. such as each described rotating machinery among the claim 15-17, wherein, described rotating machinery is compressor.
19. such as each described rotating machinery among the claim 15-17, wherein, described rotating machinery is scroll compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110355199.6A CN103089653B (en) | 2011-11-08 | 2011-11-08 | Rotor pump and rotary machine including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110355199.6A CN103089653B (en) | 2011-11-08 | 2011-11-08 | Rotor pump and rotary machine including the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089653A true CN103089653A (en) | 2013-05-08 |
| CN103089653B CN103089653B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110355199.6A Active CN103089653B (en) | 2011-11-08 | 2011-11-08 | Rotor pump and rotary machine including the same |
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| Country | Link |
|---|---|
| CN (1) | CN103089653B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283664A (en) * | 2005-03-31 | 2006-10-19 | Toyota Industries Corp | Roots pump |
| JP2007032554A (en) * | 2005-06-21 | 2007-02-08 | Daikin Ind Ltd | Rotary compressor |
| CN101526084A (en) * | 2009-04-06 | 2009-09-09 | 广东美芝制冷设备有限公司 | Shell low-pressure rotary compressor |
| CN101603535A (en) * | 2008-06-11 | 2009-12-16 | 大金工业株式会社 | Rotary compressor |
| CN202326260U (en) * | 2011-11-08 | 2012-07-11 | 艾默生环境优化技术(苏州)有限公司 | Rotor pump and rotary machine including the same |
-
2011
- 2011-11-08 CN CN201110355199.6A patent/CN103089653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006283664A (en) * | 2005-03-31 | 2006-10-19 | Toyota Industries Corp | Roots pump |
| JP2007032554A (en) * | 2005-06-21 | 2007-02-08 | Daikin Ind Ltd | Rotary compressor |
| CN101603535A (en) * | 2008-06-11 | 2009-12-16 | 大金工业株式会社 | Rotary compressor |
| CN101526084A (en) * | 2009-04-06 | 2009-09-09 | 广东美芝制冷设备有限公司 | Shell low-pressure rotary compressor |
| CN202326260U (en) * | 2011-11-08 | 2012-07-11 | 艾默生环境优化技术(苏州)有限公司 | Rotor pump and rotary machine including the same |
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| Publication number | Publication date |
|---|---|
| CN103089653B (en) | 2015-06-17 |
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