DE1703346A1 - Gear pump or motor - Google Patents

Description

The invention relates to a gear pump or motor consisting of a housing and two flow means openings and toothed, nested pump wheels of different types Number of teeth.

Hydraulic motors and pumps are increasingly being used used in a variety of hydraulic systems, with the outer toothed impeller BtationKr being supported and the inner Pumpenred, which is usually one tooth less than the Muflere The pump wheel has a planet-like structure within the outer pump wheel revolves and is in engagement with this. The inner The pump wheel has a universal joint with a rotating Shaft connected, depending on the use of the machine ala motor or the pump is a drive or output shaft. The StWS must-have funds inlet and -aualassöffnungen are accordingly the rotational speed of the drive or output shaft revolving control device synchronously with the expanding and contracting fluid "cells connected"

209811/0551

bad original

dl · lie between the teeth of the two points. at

bit

Motors with high output torque and / at low speeds high voluraotrischan DuroheMtzen are the Usually used control devices and the universal joints connecting the inner impeller with the output shaft of relatively complex to manufacture expensive structure, which is necessary for an efficient and compact,

Squeezed multi-stage engine necessary or required Construction excludes. The same sewing points as the motors The pumps, which work according to the same control principle and old a universal joint, also have this design Haohtell also states that the fluid is pulsating is delivered from the pump.

The object of the invention is to provide a planetary gear wheel principle working to create pump or motor equipment without a universal joint and without a complicated control unit direction and in which a non-pulsating, softer Fluid flow occurs.

To solve this problem is a facility of the entrance « • rwlhnten type of the invention identified by an internally toothed, Iufl «r ·· pump wheel,« in within the outer pump wheel arranged · «, externally serrated ·, inner impeller and

209811/0551 BATH ORIGINAL

an outer and outer impeller arranged between the outer and inner and internally toothed, planet-like rotating, central pump wheel, dna atohts with the other two pump wheels and between them voluraenver & iderliche, expanding and forms closer-looking agent cells, where the number

the üuSexOn teeth of the middle and inner impeller are smaller is dös XuBeren or middle as the number of inner teeth Impeller, as well as a control device that continuously © In ^ n part of the between deia outer and middle impeller existing tolls represent a flow opening and ver another part with the other flow center opening binds.

By using three or more pump rfiders, at which the inner pump wheel does not revolve like a planet and is in drive connection with a central pump wheel »that in turn with an »outer pump impeller kSrnmt, according to the invention

whose

a pump or a motor is created in which the driving force is transmitted directly between the inner, non-eccentric rotating gear and a non-planetary rotating _{P in the} center of the device. In the relatively simple and compactly built device according to the invention, a revolving control device is always connected to the

2098117 0551

ai constricting and expanding flow middle cells provided open input and output control slots, which are in constant communication with the ones provided in the housing Inlet and outlet flow openings are available, and others the fluid flow to and from the fluid medium cells to ensure no valves need to be used. the Pump wheels are through direct frictional connection and / or driven under the influence of the hydraulic fluid relative to one another and leaves between two or more putup wheels in the simplest way a speed and torque reduction Create OR translation.

If the invention is used for a multi-stage device, an impeller can be used in common for two or more stages will.

Further advantageous features of the invention emerge from the sub-claims and the following description in conjunction with the drawings. Show it

Flg. 1 the top view of the motor-pump unit according to the invention,

Flg. 2 shows a side view of the motor-pump unit according to the invention,

209811/0551

Flg. 3 shows a section along the line 3-3 of FIG. Flg. 4 shows a section along the line 4-4 of FIG. FIG. 5 shows a section along the line 5-5 of FIG. Flg. 6 shows a section along line 6-6 in FIG. 3. 7 shows a section along the line 7-7 of FIG. Flg. 8 is a section along the line 8-8 of FIG. 5 and

FIGS. 9 and 10 sections through a modified one, with a multi-stage one Setup usable control panel.

In particular, according to the Plgn. 1, 2 and 3 consists of the housing of the pump or motor 10 from outer sections 14 and and middle sections 18 and 20 "between the two outer sections are used and firmly held by several screws, the screws through holes la «Outer Section 16 and Middle Sections 18 and and run in Oewindelttoher 24 in outer section 14 and the animal sections firmly together to form a unit. the hydraulic equipment can be used without changing its design Can be used equally well as a motor and pump and is therefore

- 5 209811/0551

suitable for «Itt valtaa Bmaatsgeblet. Aue Mtaden of the entrance is dl · Binding on the basis of its use as hydraullaoht Punpa described, dia alnan disturbance pathway 26 and alnan Str & mingsMlttelauagang 28 lift daai Oehttuaeabaohnitt 14 and is driven by a motor that is connected to the In camps 31 and 32 in the middle of the OehKuaes 12 Drive shaft connected lat. The Puape can by a direct with the shaft 30 connected drive or by a belt-jack drive be driven, the pulley is tipped onto the tufted end of the shaft 30. Will the establishment If the motor is used, the linear 26 and the outlet 28 are used either an etrttaunajMlttelein- or -auslai and the wave 30 let one output shaft. The direction is preferred old hydraulic fluid operated, but can be just as beneficial adheres to other types of oil, such as water, fuel and son old Telul work.

The Puapengehluae 12 contains a Xaaaier 33 / In which is an inside Versahntea impeller 3% old thirteen pinnacles 36 that form the outer wall dee PuwpengehMuaea form «let. The Puapenrad 34 1st konsentrleeh sur Welle 30 gehluaefeat In der Xaoner 33 salary type. On the shaft 30 lat an inner punpenred 40 non-rotatably by means of a wedge 42 and the inside Puepenrad 40 bsw. grooves 44 and 46 formed on the shaft 30;

BATH ORIGINAL 20981 1/0551

17033Λ6

the inner impeller has six iUifidre teeth 48 and lies in the essentially in the same plane as the outer impeller, However, is it for reasons that go far? explained below "ground" in Axially offset, never ersiohtlioh from the drawings let. Between the outer pump wheel 34 and the inner pump wheel 40 is a central impeller 50 with teeth 52 on its Außenunfong and with teeth 34 on its inside to catch inserted. The number of outer legs 52 is one smaller ale the number of internal teeth 36 de3 Fumpenradee 34. Likewise lot the number of internal teeth of the pump wheel 50 by one higher ala the number of teeth of the inner pump speech 40. Outside » there is a relationship between the number of external teeth of the central impeller 50 and the number of external teeth 48 of the inner impeller 40, the number of external teeth 48 is half the number of teeth 52. Will the inner impeller 40 driven by the shaft 30 act the teeth 48j of the pump wheel 40 with the corresponding neighboring ones Teeth 54 of the pump wheel 50 together, whereby the middle pump wheel 50 around the inner circumference of the pump wheel 34 like a planet. With each rotation of the shaft 30 and the inner impeller 40 passes through the impeller 50 four times its orbit, and during each planetary orbit of the through the in the sense of the flg. 4 counterclockwise rotating drive shaft 30 driven middle pulley 50 expand the liquid cells 60,

" ⁷ " BAD ORIGINAL

209811/0551

which from one half of the from the inner circumference of the impeller 34 and the outer area of the central Punpenrad 50 unified eenen cavities exist "and the fluid cells 62, which from the remaining half of the between the two pump impellers enclosed cavities exist, contract, whereby a promotional effect arises, since the expanding Fluid cells 60 draw the fluid and the contracting fluid cells 62 pressure medium eject.

When the pump wheel 50 rotates like a planet in the pump wheel 34, the contracting and expanding fluid flow center inches 60 and 62 shift around the inner circumference of the impeller J4. These fluid cells stand with the inlet and outlet openings 26 and 28 by means of a circumferential Control plate 70 and connected to the inlet port 26 Ring channels 72 and a hanging channel 74 connected to the outlet opening 28 in connection. The control panel Is freely rotatable on the wool 30 and in the housing l8 and becomes through the cooperation of one on the middle Pump wheel 50 arranged Mltnehmerfläohe 76 with one on the Control plate trained NltnehmerflHehe 78 driven. The participant surface 76 on the central pump wheel is concentric to the inside and outside of the impeller, and

2098 11 / 05Ö1 BADO _Rl QINAL_

the Mitanehmerfläoh · 78 1st eccentric cur shaft JO and to Nlttelbohrung 8O, through which the shaft runs and in the it rotates, arranged; When using the opening 26 as

The suction inlet of the pump is the sioh expanding fluids cells Via the control plate to the ring channel 72 by means of a curved control seat 82 and several small bores 84 running radially, connected to the Connect the control slot with an annular channel 86 running around the outer circumference of the control plate ▼, the annular channel 86 through the outer circumference of the control plate, the inner circumference of the OehHuseabsohnlttes 18 and the corresponding side surface of Oehäuseabsohnittes 20 is formed. The ring canal 86 is directly and constantly in connection with the annular channel 72, so that the fluid flows into the expanding Flow media of the pump via the inlet 26 »the annular channels 72 and 86, the radial bores 84 and the curved control slot 82 flows in. The contracting fluid cells are with the projection 28 connected via the curved control slot 90 and the annular grooves 92 and 93, each of which is completely around one side the control plate runs and with the ring channel 74 in connection which in turn is connected to dta outlet 28 1st. 01 Mitnetaserfläohe on the middle impeller 50 rotates dl · control plate with the rotational speed of the middle impeller so that the control slots 82 and 90

- 9 - ORIGINAL BATHROOM

209811/0551 '

Constantly synchronized with the expanding and contracting Flow cells 60 and 62 rotate. The tax

The passage 95 penetrating through the plate creates a hydraulically effected force equalization on both sides of the control plate. When the shaft is driven in the opposite direction, the bin and unloading 26 and 28 become out and Inlet and the fluid flows in the opposite direction through the pump.

Ia operation of the device according to the invention as a pump and with "rotation of the shaft 30 in the sense" of the pig. 4 counterclockwise, the inner pump wheel 40 gives the pump wheel 50 a planetary orbital motion, as a result of which cells 60 rotating with the central pump wheel 50 expand and the cells 62 contract. When the pump wheel 50 revolves like a planet, the driver surface 76 provided on the pump wheel 50 drives the control plate with the ttalaufgesohwindlgtoeit of the pump wheel 50 through its interaction with the driver surface 78 arranged on the control plate, whereby the control slot 82 synchronously with the expanding cells € 0 and the control slot 90 rotates in synchronism with the constricting cells 62. When the middle pump wheel 50 revolves like a planet and the control plate 70

- 10 - ORIGINAL BATHROOM

209811/0551

rotates, fluid is ttbtr the binl · · 26, dl «ringjcanlle 72 and 86 and dl · Rtdlalbohrungen 84, sum control slot 83 and from there do the expanding Stroaunmealttelsellen 60 sucked in, and when dleee is fluid filled expanding struqungeolttelsellen cu β loh contracting etromungsalttelsellen 62 will “will flow out of you over the control slot 90, the groove 93, the longitudinal channel 74 and the out-laQ 28

When using the execution ale engine is used as pressure medium via the power outlet 28 and the corresponding channel « supplied to the flow medium 68, the cells 62 expanding Strö-Bung cells and cells 60 leaning against each other will be, and the pollution old will be soled conductive via the corresponding cannula from the flow vent 26 promoted to the outlet for the Drive fluid will. Granted at this company welfare the pressure medium deai middle impeller 50 is a planetary one Uniaaufbeweeung and the middle impeller drives on its side the inner impeller 40 and the shaft 30, which is now the output shaft of the engine.

In the embodiment shown, the fluid pressure is in the inner one and the middle one Impeller 40 and 50 included, see expanding and

- 11 -

BATH ORIGINAL

20981 1/0551

SuaaMaenslehenden etrtaungeMlttelsellen through the ring gap 96 in the Kanner 33, with the inner pump wheel through a snap ring 98 held on the shaft JO. Since daa interior having impeller one less tooth ale Znnenunfang the central Puspenrades, occurs the rotational velocity of the central impeller «« * 50 and the rotational speed of the shaft swlsohen at 50 a difference, and duroh decreasing or increasing the ZKhnezahl the Pumpenr & the ko and Aufreohterhaltung of Different from one tooth swi-Bohon, both pump gears can be obtained by choosing the middle pump wheel and the shaft.

The device described can be modified by the arrangement of a straight control position either as part of it the control plate described above or can be designed as a separate component and ISIn and outgoing control rooms Contains those related to the expanding and contracting, between the inner and middle impellers 40 and 50 located in communication with what to a multi-stage pump or a multi-stage motor

en
moves, in which / the steps are essentially in the same radial plane. In the Plgn. 9 and 10 a suitable control plate is shown in its outer circumference

20981 1/0551

- 12 -:

BAD ORIQfNAL

has the same cannula and slots as control plate 70; the cannula corresponding to the control plate 70 are therefore provided with the same reference numbers. In the

* I

Control plate 108 are the inner curved control slot © 110 and 112 via channels 114 and 116 to the steering soles 82 or »90 and are connected with the corresponding between the pump impellers 40 and 50 arranged, expanding or contracting fluid cells in constant communication. A plate is used in these execution examples or another filling component that uses the type of flow «!. Connection between expanding and contracting · the cells across the gap 96 * of the chamber 33 prevented so that the inner and middle impeller form a second motor or pump stage that controls the delivery rate or the output torque the middle and outer puapen rudders enlarged. if for example the device is used as a pump and the fluid port 26 is the suction port, this will be the case Fluid through the control slot 110 into the two the impellers 40 and 50 inflating expanding cells

e sucked and when they are contracted over the Steureohlltz 112, the channel II6 and the control slot 90 for currents! opening 28 promoted «This multi-stage arrangement can be used without any appreciable enlargement of the pump housing and with a only a slight increase in the number of components can be carried out. Although by the described execution only

ORIGINAL BATHROOM - 13 -

209811/0551

/ ti

a “white-step binary” can be done according to the the same Ρτΐηζίφοοη further stages can be added.

In both cases, there can be disruptive means when using the flowering ala puape in both directions swiaohen the public funding openings 26 and 28 funded depending on the direction in which the shaft JO is driven is, and when using the flow direction ala motor, the fluid can also depending on the The desired direction of rotation of the shaft can be guided through the device in both directions. The fluid opening was only repeated for the sake of fairness BinlaB beseiohnet to the construction and operation of the invention Indication that can be used either as Puape or Motor without modification.

- 14 -

BATH ORIGINAL

209811 / 0561-

Claims (16)

Claims The gear pump or -aotor consisting of an oehMuse with two strut openings and toothed, interleaved pulley wheels, the lower number of teeth, can be marked with "inwardly interlocked" tusseree pulley, interlocked inner pulley, inner toothed outer paperboard (40) and a middle pump wheel (50), arranged between the Uufierea and the inner poppet wheel, toothed on the outside and inside, running like a planet, which is in engagement with the other two pin wheels and 'wipes them with voluaenverXnderliohe, look expansive and sueanaensleUende struenmgsnlttelsnlten (60, 62), the number of outer teeth (52 or 48) of the cemented and inner puncture radea being smaller than the number of inner teeth (36 or 54) of the outer bxw. middle Fuapenrades, as well as a control device (72 to 94), which continuously a part (60) of the «wipe the - 1 - »^ D ORIGINAL. 209811/0551 17033Λ6 The cells located in the outer and middle impeller the inner flow opening (26) and another Part (62) connects to the other flow opening (28). 2. gear pump or »motor according to claim 1, characterized in that that the MuBere Punpanrad (54) feat with the Oe- ' hlu & e (12) connected and daa inner impeller (40) among others a case-fixed Aohae (3K)) is rotatable. 3. Gear pump or motor according to claim 1 or 2, characterized marked «daft the inner impeller (40) on a in the OehKuae (12) rotatably (ChIg mounted shaft (30) attached is. 4. Gear pump or motor according to one of the preceding Claims, characterized by the fact that the number of outer teeth (52) of the central pump wheel (50) is reduced by one eats less than the number of inner teeth (36) of the outer Pump wheelea (34). 5 · Gear pump or motor according to one of the preceding claims, characterized in that the number of teeth (48) of the inner pump wheelea (40) is smaller by Bin * as the number of inner teeth (54) of the central pump wheel (50). »AD ORIGINAL - 2 - r ~ 2 0.9 8 1 1/0 5 5 1. 6. Gear pump or motor naoh a · »the preceding claims, characterized in that dafi dl · teeth (36, 52) des KuBeren (34) and medium (50) fluid inlet and outlet cells (60, 62) and the teeth (54, 48) dee middle (50) and inner (40) cells for Puapenrades one that is essentially under constant pressure Limit fluid. ' 7. Gear pump or motor according to one of the preceding claims, characterized in that the control device consists of a rotatable, essentially disk-shaped control plate (70) which rotates with the relatively flat surface and middle pulley wheel (yk, 50). 8. Gear pump or motor according to claim 2 and 7, characterized in that the control plate (70) rotates with the rotational speed of the central pump wheel (50). 9. Gear pump or motor naoh claim 7 or 8, characterized characterized in that the control plate (70) is essentially two diametrically opposed to the U-lying, curved steering wire strand (80, 90), and that between the one control slot (82) and a fluid opening (26) a first Fluid connection (84,86,72) and between the the other control slot (90) and the other flow port (28) a second fluidic connection (74,92,93) is provided. ORIGINAL 209811/0551 badük ^ im 10. Gear pump or motor according to claim 9, characterized in that that the housing (12) with a »first ring channel (72, 86), which old is connected to the one control slot (82) and, among other things, the outer circumference of the control plate (70) is arranged is, and a second annular channel (74) is provided ieb, which is arranged on one side of the Steuerplatta (70) and is connected to the other control slot (90). 11. Gear pump or motor according to one of claims 7 to 10, characterized in that the control plate (70) through a coupling device (76, 78) connected to the central pump wheel (50) in a form-fitting manner is driven. 12. Gear pump or door according to one of the preceding Claims, characterized in that there is an inner pump wheel (40) half as many external teeth as the middle impeller (50). 13. Gear pump or motor according to one of the preceding approach, characterized by an additional control device (110 to 116), which are continuously part of the between the inner and the middle impeller (40, 50) with the one flow medium opening (26) and another part of the twelve BATH ORIGINAL 209811/0551 the inner and the middle impeller (40, 50) located Cells with the other flow side opening (28) connects (Figs. 9 and 10). 14. Gear pump or -aotor according to claim 13 »characterized by · shows that the additional control device consists of a rotating plate. 15. Gear pulp or motor according to claim 13 or 14, in Connection with one of claims 7 * 10, characterized in that for that the control plate (70) has two additional, essentially dlaaetrally opposite, curved ones Contains control slot (110, 112) within the Kauptsteuererschlltse (82, 90) are arranged. 16. Gear pump or motor according to claim 15 «characterized in that that each inner curved control slot (110 or 112) with the opposite outer curved Control slot (82 or 90) via a channel (114 b * w. 116) is connected. " ⁵ "'BAD ORIGINAL 209811/0551 Lee r side