JPS60206990A - Pump or motor - Google Patents

Abstract

PURPOSE:To constitute a two-stage pump as well as to aim at an increase in delivery capacity, by fitting an intermediate ring cylinder in space between a cylinder and a center shaft with some play, while installing a vane piercingly in this intermediate cylinder. CONSTITUTION:A pump houses a first cup member 1 and a second cup member 2 inside a housing 3. In this first cup member 1, an annular groove 7 centering on the shaft center O1 is formed, while a cylindrical intermediate ring cylinder 11 is projectingly installed in the second cup member 2 and fitted in the said annular groove 7. Both these cup members are eccentric with each other and fitted together face-to-face so as to cause the intermediate clyinder to be inscribed to an outer circumferential surface 7a of the annular groove at an A point as well as to be circumscribed to an inner circumferential surface 7b of the groove at a B point. And, plural sheets of vanes 15 are piercingly installed in the intermediate cylinder of this second cup member.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a pump or motor that can be used as a vacuum pump or compressor, as well as a power machine.

(B) Prior Art For example, as a typical pump, a rotor is disposed at an eccentric position within a cylinder, and this rotor holds vanes that divide the space around the rotor into a plurality of pump chambers. There is a so-called vane type pump in which the volume of the pump chamber is increased or decreased by rotating the rotor together with the vane 111.

However, such conventional pumps have the disadvantage of a small pop volume due to the relatively low space utilization inside the housing, and the overall size of the device or the weight of the pump.

Therefore, in recent years, a plurality of cylinders have been wrapped around the central axis in multiple layers to form mutually isolated spaces between the central axis and the cylinders and between each cylinder, and each of these spaces has been filled with vanes. A system has been proposed in which each pump chamber is divided into a plurality of pump chambers, and each cylinder and the central shaft are given mutual movement, thereby expanding and contracting each pump chamber so that the pump function can be exerted in each space. .

However, if a pump based on this principle is constructed with an independent central shaft and cylindrical cylinder whose both ends are supported by bearings, etc., the bearing structure, transmission structure, etc. at both JLV parts will become extremely complicated. Become. This results in the inconvenience that it takes time and effort to manufacture and assemble the parts, and also makes it difficult to seal both sides of the pouring chamber.

([C] Purpose The present invention has been made with attention to such circumstances,
This is an epoch-making product that can increase the utilization of space by creating multiple spaces around the central axis that carry out the pump function, without causing the inconvenience of complicating the structure or making sealing difficult. The purpose is to provide pumps or motors.

(d) Structure In order to achieve the above object, the present invention provides a first force/pump member formed by integrating a central axis and a cylinder surrounding the central axis via a side plate, and a first force/pump member that includes a central axis and a cylinder surrounding the central axis. A mutually independent space is created around the central axis in 11. Each of these spaces is divided into a plurality of pump chambers by vanes installed across the intermediate cylinder, and the volume of each pump chamber can be periodically changed by interlocking the two pump members. It is characterized by being configured as follows.

(E) Embodiment One embodiment of the present invention implemented in a vacuum pump will be described below with reference to FIGS. 1 to 3.

As shown in FIGS. 1 and 2, the vacuum pump according to the present invention includes (11 cup members 1 and a second cup member 2)
are housed in the housing 3. The first cup member l is formed by integrally protruding from one end surface 4a of a circular side plate 4 a central shaft 5 and an outer cylinder 6 concentrically surrounding the central shaft 5, An annular groove 7 centered on the axis 01 of the cup member l is formed between the central shaft 5 and the outer cylinder 6. Further, the other end surface 4 of the side plate 4
A support shaft 8 that supports the cup member l is integrally provided at the center of b. On the other hand, the second cup member 2 has a ring-forming annular groove 7 fitted in one end surface 9a of the circular side plate 9.
(It is formed by integrally protruding a cylindrical intermediate cylinder 11 that can be rotated, and the axis of this intermediate cylinder 11 is aligned with the axis 01 of the cup member 2. Also, the side plate 9 A supporting shaft 12 for supporting the cup member 2 is integrally protruded from the center of the other end surface 9b. Inscribed in the outer circumferential surface 7a at point A, and circumscribed in the inner circumferential surface 7b at point B, they are made to face each other eccentrically and slide against each other, and in this state are housed in the housing 3 schematically shown in the drawings. Note that this housing 3 has bearings 13.14, and these bearings 13.14,
The support shafts 8.12 of each of the cup members 1 and 2 are rotatably supported. A plurality of vanes 15 are provided through the intermediate cylinder 11 of the second cup member 2.
These vanes 15 divide the three-moon-shaped space 11, which is defined inside and outside the intermediate cylinder 11, into a plurality of pump chambers 16 and 17, respectively. Specifically, as shown in FIG. 3, a plurality of slits 18 are formed in the intermediate cylinder 11 at equal angular intervals in the circumferential direction, and the vane 15 is slid in the radial direction into each of these slits 18. It is fitted to the nr function. Outer end surface 1 of each bay 715
5a and the inner end surface 15b are formed in a shape along a virtual cylindrical surface a whose diameter is the opening width W of the annular groove 17,
The outer end surface 15a is always in contact with the outer surface E 7a of the annular groove 7, and the inner end surface 15b is kept in contact with the outer E surface 7a of the annular groove 7.
It is made to be in sliding contact with the inner circumferential surface 7b at all times. The support shafts 8, 12 of both the cup members 1, 2 are rotated in the same direction at a constant speed by a drive device (not shown). In addition, in this embodiment, 111, 1'
An inner intake bow 21 corresponding to the pump chamber 16 formed inside the intermediate cylinder 11 is provided on the protruding surface 3a provided on the housing 3 so as to be in sliding contact with the IllI plate 9;
an outer intake port 2 that opens the inner exhaust port 22 and communicates with the pump chamber 17 formed outside the intermediate cylinder 11 on the inner surface 3b of the housing 3;
3 and the outside exhaust boat 24 are opened. and,
The ports 21, 22 and the pump chamber 16 are connected to
Communication is possible through ventilation holes (not shown) drilled on the ij side &9. In addition, 25.26 is a disk-shaped thrust bearing made of metal containing metal,
One bearing 25 is attached to the distal end surface of the central shaft 5 of the first cup member l, and the other bearing 26 is attached to the center of the side plate 9 of the second cup member 2.

Next, the operation of this embodiment will be explained.

The first and second cup members 1 are moved by operating a drive device (not shown).
．． 2 at a constant speed in the direction of arrow X, each vane 15
is held between the central shaft 5 and the outer cylinder 6, and rotates in the X direction together with the intermediate cylinder 11. At this time, both the cup members 1 and 2 are relatively biased.
Perform l+il movement.

That is, the axial center 01 of the second force/shib member 2 relatively revolves around the axial center 01 of the first cup member 1, and the volume of the pump chamber 1617 increases and decreases periodically. When observing this with the stationary housing 3 as a reference,
The axis o1 of both cup members l, 2. The volume of the pump chamber passing through the area α on the right side in FIG. 2 of the virtual dividing plane N including 111 of The volume of the pump chamber 16 that is passing through the region β on the left side in FIG. 2 gradually decreases as the pump rotates. Therefore, gas is sequentially sucked into the pump chamber 16 from the internal intake port 21 opened to the region α side, and the sucked gas is gradually compressed as it moves to the region β of the pump chamber 16. The air is discharged to the outside through an internal air vent 122 provided in the area β. Also,
Outside the intermediate cylinder 11, the volume of the pump chamber 17 that is passing through the region β increases tidalally as it rotates in the X direction. Accordingly, the '3 product gradually decreases. As a result, the gas from the external intake port 23 opened to the region β side is successively sucked into the pump chamber 17, and the sucked gas is gradually compressed as the pump chamber 17 moves to the region α. The air is discharged to the outside through an external tJl air boat 24 provided in the area α.

If you want something like this, middle cylinder 1
A pump chamber 16 formed inside the pump chamber 1 and a pump chamber 17 formed outside the pump chamber 1 are independent from each other.
It is possible to perform the function as an e-pump, or alternatively, the gas discharged from the external exhaust boat 24 can be introduced into the internal intake port 21 via a pressure accumulator (not shown), and a two-stage pump/ It can also be used as a pool.

In addition, in the above embodiment, the first cup member and the second force
Although the case where the shib member is rotated at a constant speed has been described, the present invention is not necessarily limited to such a case. For example, the following embodiments (a) to (C) are possible. .

(a) The 15th cup member is kept stationary for 1 m, and only the second cup member is rotated around the axis 07. In this case, the shouldering speed between the vane and the inner and outer circumferential surfaces of the annular groove increases, but in principle, the same effect as that of the previous embodiment can be obtained.

(b) Leave the second cup member at 1-, and the first
The cup members are eccentrically interlocked. That is, the first cup member is moved slowly so that the axis O1 revolves around the axis 07, and the volume of each pump chamber is periodically increased or decreased.

(C) The first cup member is kept stationary and the second cup member is moved eccentrically. In other words, the axis 07 is the axis 0
The second cup member is interlocked so as to revolve once, and the volume of each pump chamber is periodically increased or decreased.

In addition, for the pump chamber whose volume changes,
Of course, the number of L stages to be considered is not limited to the one described above, and various modifications may be made without departing from the spirit of the present invention.
It is Ding Noh. For example, an exhaust passage may be provided within the central axis of the first cup member, so that gas within the pump chamber formed on the innermost side may be exhausted to the exhaust passage via a check valve. Alternatively, in the case where any of the cup members is stationary, the taste port or the υ1 air port can be directly opened at a certain location on the cup member on the static II- side.

Furthermore, it goes without saying that the configurations of the first cup member and the second cup material are not limited to those of the embodiment described in iii. For example, they may each have a plurality of cylinders. . The first cup member 1' shown in FIG. 4 has a central axis 31 on one end surface of a side lid 30, and two cylinders 32.3 concentrically surrounding this central axis 31.
Annular grooves 34 and 35 are formed between the cylinders 32 and 33, and between the cylinders 32 and 33, respectively. Further, the second cup member 2' is provided with an intermediate cylinder 3 that can be loosely fitted into each of the annular grooves 34 and 35 on a side plate (not shown).
6.37 is integrally provided in a protruding manner. and,
These two cup members 1' and 2' are connected to each of the intermediate cylinders 36. ．． The annular grooves 34 and 37 are eccentrically fitted to each other so as to contact the outer and inner circumferential surfaces of the corresponding annular grooves 34 and 35, respectively. Further, each intermediate cylinder 36.37 has a space m, rv, v, v within an annular groove 34.35 divided into the inside and outside of the intermediate cylinder 36.37.
Vanes 43.44 are installed through the pump chambers 38, 39, 41, and 42, respectively, to partition the pump chambers 38, 39, 41, 42 into a plurality of pump chambers 38, 39, 41, 42, respectively. By interlocking these cup members 1', 2' in the same manner as described above, each of the pump chambers 38, 39, 4
The volume of 1.42 is changed periodically.

However, if it is like this, each pump chamber 3
8.39.41.42 can each function as an independent pump, or all or some of them can be connected in series to function as a multistage pump.

The present invention is also applicable to motors such as air motors.
It is possible to realize a machine that can output rotational output by supplying compressed air or the like.

(f) Effects Since the present invention has the above-described configuration, the following effects can be obtained.

First, since mutually independent spaces are formed around the central axis by a plurality of cylinders, and each of these spaces can perform a pumping function, it is possible to increase the space utilization inside the house nog. Therefore, it is possible to substantially increase the number of customers without increasing the size or weight, and it is possible to perform the function as a multi-stage pump with a single pump.

Moreover, a first cup member having a center shaft and a cylinder protruding from one end face of the side plate and a second cup member having an intermediate cylinder protruding from one end face of the side plate are combined so as to face each other. By doing so, a multi-hair pump structure is formed. Therefore, unlike the case where the central shaft and each cylinder are constructed as independent parts, there is no problem that the bearing structure and transmission structure in the side plate portions become complicated. therefore,
The component parts can be manufactured easily, and the assembly work can be greatly simplified.

Also, with this kind of thing, the center shaft and cylinder are integrated with one of the side plates.

There are few seals on the side plates. Therefore, it is easy to ensure sealing between each pump chamber.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view, and FIG. 3 is an exploded perspective view. 54 is a cross-sectional view corresponding to FIG. 2 showing another embodiment of the present invention. l, 1゛...first force, pump member 2.2'...second car, push member 3... housing 4.30, warp, side plate 5.31, skewer, center shaft 6 .32.33・No.・Cylinder 7.34.354＠Annular groove 7a・・φOuter circumferential surface 7b−Ki・Inner circumferential surface 9φ・・Side plate 11.36.37・φφ Intermediate cylinder 15.43,441・Hean 16.17.38.39.41.42 --- Pump room agent (f buried soil Akazawa - 1981 patent application ftIJ64530152 Name of invention pump or motor 3 Person making amendment Relationship with case Patent applicant address: 378 Roots Funiricho, Kawaramachi-dori Nijo-shita, Nakagyo-ku, Kyoto City
Address name (199) Shimadzu Corporation Representative Director and President Setsuo Yokoji 4 Agent Address: 606-6 Drawings subject to amendment

Claims (1)

[Claims] A central axis and one or more cylinders concentrically surrounding the central axis are protruded from one end surface of the side plate, and an annular groove is formed between the central axis and the cylinders or between the cylinders. 1 cup member and a second cup member having an intermediate cylinder protruding from one end surface of the side plate that can be loosely fitted into the annular groove, and the intermediate cylinder No. 111 connects both cup members to the corresponding annular shape. Outer circumference and inner circumference 1 of the groove
n1, respectively, so as to be eccentric to each other so as to be inwardly and circumscribedly contacting each other and sliding face to face, and in the intermediate cylinder, a space within an annular groove defined on the inside and outside of the intermediate cylinder is divided into a plurality of pump chambers, respectively. A vane is provided through the vane, and the volume of each pump chamber is periodically changed in accordance with the rotational pressure movement of the second cup member with respect to the first cup member or the relative eccentric movement of both the cup members. 1. A pump or motor characterized in that it is configured to allow