WO2018135737A1

WO2018135737A1 - Gerotor pump having housing-integrated separation plate

Info

Publication number: WO2018135737A1
Application number: PCT/KR2017/013092
Authority: WO
Inventors: 이재천; 류하오; 신현명; 김융성
Original assignee: 계명대학교 산학협력단; 대영 주식회사
Priority date: 2017-01-20
Filing date: 2017-11-17
Publication date: 2018-07-26
Also published as: KR101948228B1; KR20180086326A

Abstract

The present invention relates to a gerotor pump having a housing-integrated separation plate, which comprises: a pump housing configured to allow a fluid to be introduced or discharged; two pairs of rotor modules, which include inter rotors and outer rotors and are arranged in series in the pump housing; a driving shaft connected to the inner rotors of the two pairs of rotor modules; and a separation plate disposed between the two pairs of rotor modules and configured to be a part of the pump housing together therewith. Therefore, the present invention not only improves the assembling performance of a gerotor pump as a whole but also enables both pumping spaces thereof to be accurately and stably partitioned, and thus enables a stable pumping operation so as to raise the efficiency of the gerotor pump.

Description

Gerotor pump with housing integral separator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gerotor pump which is a kind of internal gear pump and is used as a pump for a lubricator or an automatic transmission of an automobile.

Automotive engine lubrication is essential for smooth engine operation and long life. One of the components of the lubrication system is an internal gear pump which is advantageous in terms of flow rate, durability, noise and miniaturization.

The oil pump is an essential functional part of an engine that is mounted and driven in an automobile engine, and converts mechanical energy supplied from the engine into pressure energy and speed energy of the engine oil to lubricate each sliding part of the engine. This part is to prevent abnormal wear and sintering of parts.

The components that make up the Gerotor pump, one of the oil pumps, include an electric motor, a key, an outer rotor and an inner rotor, and a rotor case. , O-ring, screw and so on.

Meanwhile, a gerotor oil pump with an arbitrarily created rotor is composed of an internal rotor and an external rotor, so the structure is simple and processing is complicated even if the shape is complicated as the precision of processing is increased due to the development technology of sintered products. Easy to assemble, easy to assemble and less relative movement between the two teeth, the change of efficiency is small even after long-term use, the suction performance is excellent. For this reason, it is widely used in hydraulic systems, and recently, with the development of processing technology, the applicability is gradually expanding.

However, since the conventional rotor rotor pump is composed of two pairs of rotor modules, the separation plate is separately installed between the two pairs of rotor modules, and thus the overall structure is complicated, and the separation plates must be separately fixed. There is a problem that the assembly and efficiency are low.

The present invention has been made to solve the above problems, by constituting the pump housing and the separator plate integrally, it is possible to accurately divide both pumping spaces without fixing the separator plate to increase the efficiency of the pump, and also to improve the assembly It is an object of the present invention to provide a gerotor pump having a housing integral separator plate.

According to the present invention for realizing the above object, a gerotor pump having a housing-integrated separator includes: a pump housing configured to allow fluid to flow in and out; Two pairs of rotor modules comprising an inner rotor and an outer rotor and disposed in series in the pump housing; A drive shaft connected to the inner rotor of the two pairs of rotor modules; It is characterized in that it comprises a separator plate disposed between the two pairs of rotor modules and at the same time constitute a part of the pump housing.

Here, it is preferable that the separating plate includes a separating portion positioned between the two pairs of rotor modules to partition both pump chambers, and a housing portion configured outside the separating portion to form a part of the pump housing. .

Preferably, the separating part is formed in a disc shape and configured to partition both pump chambers.

The housing unit is preferably formed to have a pump chamber in which any one of the two pairs of rotor modules of the rotor module can be located.

The pump housing includes a main body part assembled with the housing part and a pair of rotor modules of two pairs of rotor modules located therein, and a side plate part assembled on both sides of the assembly in which the main body part and the housing part are assembled. It is preferred to be configured.

The body portion is preferably formed in a ring-shaped structure.

The separating plate is preferably formed so that the surface assembled with the main body portion has a planar structure, and the other surface has a pump chamber into which one of the two pairs of rotor modules is inserted.

The main problem solving means of the present invention as described above, will be described in more detail and clearly through examples such as 'details for the implementation of the invention', or the accompanying 'drawings' to be described below, wherein In addition to the main problem solving means as described above, various problem solving means according to the present invention will be further presented and described.

Since the GROTOR pump having the housing-integrated separation plate according to the present invention is composed of the pump housing and the separation plate integrally, it is possible to accurately and stably partition both pumping spaces without separately fixing the separation plate. The pumping operation is stable to increase the efficiency of the pump. In addition, since the separator is integrally formed in the pump housing, there is an effect of improving the overall assembly.

1 is an overall cross-sectional view showing a gyrotor pump having a housing-integrated separation plate according to an embodiment of the present invention.

2 is a perspective view of the coupling state of the gerotor pump having a housing-integrated separator according to an embodiment of the present invention, viewed from the left.

3 is a perspective view of the coupling state of the gerotor pump having a housing-integrated separator according to an embodiment of the present invention, seen from the right direction.

Figure 4 is a perspective view from the right showing an exploded state of the gerotor pump having a housing-integrated separation plate according to an embodiment of the present invention.

Figure 5 is a perspective view from the left showing an exploded state of the Gerotor pump having a housing-integrated separation plate according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 5 are diagrams illustrating a gerotor pump having a housing-integrated separator according to an embodiment of the present invention, in which FIG. 1 is a cross-sectional configuration diagram, and FIGS. 4 and 5 are perspective views seen from the left and right directions in which the disassembled state of the gerotor pump is shown.

Referring to these figures, the rotor rotor pump having a housing-integrated separator according to the present invention includes a pump housing 10 through which fluid is introduced and discharged, and two pairs of rotors disposed in series in the pump housing 10.

Module

20, 30, a drive shaft 50 connected together to the

inner rotors

25, 35 of the two pairs of

rotor modules

20, 30 to provide rotational power, and two pairs of rotor modules ( It is disposed between the 20 and 30, and consists of a separating plate 40 constituting a part of the pump housing 10.

Here, the two pairs of

rotor modules

20 and 30 are composed of the first rotor module 20 and the second rotor module 30 from the left in the drawing.

The first rotor module 20 is composed of a first outer rotor 21 and a first inner rotor 25 that meshes with and rotates with the gears of the first outer rotor 21.

The second rotor module 30 is composed of a second outer rotor 31 and a second inner rotor 35 that meshes with and rotates with the gears of the second outer rotor 31.

Of course, gears are formed on the circumferential surface of the first inner rotor 25 and the second inner rotor 35, respectively, and shaft holes to which the driving shaft 50 is coupled are formed in the center thereof.

The first rotor module 20 and the second rotor module 30 are disposed in series on one axis line, and the pumping area of each rotor module is formed between the two

rotor modules

20 and 30 as described above. The partition plate 40 which divides is comprised.

Here, the separation plate 40 is disposed between the two pairs of

rotor modules

20 and 30 to separate both pump chambers, and the outside of the separation unit 45 and the pump housing. It is comprised including the housing part 41 which comprises a part of (10).

Separation portion 45 is made of a disk structure of a predetermined thickness, the center portion is formed with a hole through which the drive shaft 50 passes.

The housing portion 41 is formed so that the surface assembled with the main body portion 11 of the pump housing 10 to be described below has a flat structure together with the separating portion 45, and the second rotor module is formed on the other surface. The pump chamber 42 of the groove structure is comprised so that the 30 may be inserted.

Such a separation plate 40 is formed so that the separation part 45 and the housing part 41 are integrally formed to form a part of the pump housing and a known separation plate.

The pump housing 10 is assembled with the housing portion 41 of the separator plate 40 so that the first rotor module 20 is located inside, the main body portion 11 and the housing portion ( 41 is configured to include

side plates

13 and 15 assembled to both sides of the assembled assembly.

The main body 11 is formed in a ring-shaped structure as a whole and is positioned with the first rotor module 20 inserted therein.

Both

side plate portions

13 and 15 have a disk-like structure and are assembled to both the main body portion 11 and the housing portion 41. Of course, a hole through which the drive shaft 50 passes is formed in one side plate portion 15.

The housing 41 of the pump housing 10 and the separator plate 40 rotatably supports the two

rotor modules

20 and 30, and is also provided by the two

rotor modules

20 and 30. And a fluid passageway through which the pumped oil flows in and out.

The fluid passages are inlet 13a, outlet 13d,

flow path

13b, 11a (11a) in the

side plate portions

13 and 15, the main body portion 11, and the housing portion 41 of the separating plate 40, respectively ( 41a, 15a, 15b, 41b, 11b and 13c may be configured to be continuous.

The method of assembling the pump housing 10 and the housing part 41 of the separator plate 40 as described above is performed inside the housing 41 of the pump housing 10, the main body part 11, and the separator plate 40. In a state where two pairs of

rotor modules

20 and 30 are disposed, one side plate portion 13 of the pump housing 10, the main body portion 11, the housing portion 41 of the separation plate 40, and the other The side plate portions 15 may be arranged so as to overlap in order, and then assembled by a method of fastening with a nut through a bolt or the like. Of course, although not illustrated in the drawings, it is preferable to insert and assemble a gasket, which is a sealing member, between the parts to prevent leakage.

On the other hand, in the embodiment of the present invention as described above has been described a configuration in which the pump housing 10, the body portion 11 and the housing portion 41 of the separation plate 40 is separated, depending on the pump conditions It is also possible to configure the housing 10, the main body 11, and the housing 41 of the separating plate 40 to be integrally formed.

That is, the separation part 45 may be integrally formed in the center of the configuration in which the pump housing 10, the main body part 11, and the housing part 41 of the separation plate 40 are integrally joined together.

As described above, the technical idea described in the embodiments of the present invention may be implemented independently, or may be implemented in combination with each other. In addition, the present invention has been described through the embodiments described in the drawings and the detailed description of the invention, which is merely exemplary, and those skilled in the art to which the present invention pertains various modifications and equivalent other embodiments therefrom It is possible. Therefore, the technical protection scope of the present invention will be defined by the appended claims.

10 pump housing 11 body part

13, 15: side plate 20: first rotor module

21: first outer rotor 25: first inner rotor

30: first rotor module 31: first external rotor

35: first inner rotor 40: separator plate

41 housing portion 42 pump chamber

45: separating portion 50: drive shaft

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gerotor pump having a housing-integrated separation plate, and can be applied to oil pumps such as lubrication devices or automatic transmissions of automobile engines. For example, it can be applied to a hydraulic power generator of various vehicles, AWD (All Wheel Driving) system, a battery pack cooling system of an electric vehicle, a lubrication system of a hybrid vehicle, a booster pump of an autonomous driving tractor.

Claims

A pump housing configured to allow fluid to flow in and out;

Two pairs of rotor modules comprising an inner rotor and an outer rotor and disposed in series in the pump housing;

A drive shaft connected to the inner rotor of the two pairs of rotor modules;

And a separation plate which is disposed between the two pairs of rotor modules and simultaneously constitutes a part of the pump housing.
The method according to claim 1,

The separating plate includes a separating part disposed between the two pairs of rotor modules and partitioning both pump chambers, and a housing part configured outside the separating part to constitute a part of the pump housing. With a rotor rotor.
The method according to claim 2,

The separation unit is a Gerotor pump having a housing-integrated separation plate, characterized in that formed in a disk-shaped structure partitions both pump chambers.
The method according to claim 2,

And said housing portion is formed to have a pump chamber in which any one of two pairs of rotor modules can be located.
The method according to claim 4,

The pump housing includes a main body portion assembled with the housing portion and a pair of rotor modules of two pairs of rotor modules located therein, and a side plate portion assembled on both sides of the assembly in which the main body portion and the housing portion are assembled. A rotor rotor pump having a housing-integrated separator.
The method according to claim 5,

And a main body portion having a housing-integrated separator, characterized in that formed in a ring-shaped structure.
The method according to claim 5,

The separating plate is formed so that the surface is assembled with the main body portion having a flat structure, the other side is formed with a housing housing, characterized in that it has a pump chamber into which any one of the two rotor module of the pair of rotor module is inserted Gerotor pump with separator plate.