JPS59188081A - Turning sleeve of rotary compressor - Google Patents

Abstract

PURPOSE:To provide for good pneumatic bearing performance by forming many communication holes on a cylindrical turning casing which is rotatably fitted in a casing, each of said communication holes consisting of an air sump which is formed at the opening on the internal side thereof and a small diameter hole which is formed at the opening on the external side thereof. CONSTITUTION:A displacement type rotary compressor has a casing 1 which contains a center housing 2 having a cylindrical internal peripheral face 2a and inside the casing 1 a turning sleeve 5 is rotatably placed. The turning sleeve 5 eccentrically contains a rotor 7 having a plurality of vanes 17 as slidable in the radial directions. Compressed air is guided into the clearance between the turning sleeve 5 and the casing 1 via a plurality of communication holes 9 which are formed on the turning sleeve 5, whereby forming a pneumatic bearing. Each of the through-holes 19 consists of both a reamed air sump 20 which is formed at the internal opening part 19a and a small diameter hole which is formed at the external opening part 19b. The performance of the pneumatic bearing may be thereby improved remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a method for supercharging intake air into an engine.
Track type supercharging) Used in Ikutoshi,] 110
There are some notes regarding rotary sleeves in the rotary compression overview, which describes a rotary sleeve that rotates over and over.

(Prior art) Rotary compressors in which this J-shaped rotary sleeve is mounted on the right side have been known (for example, "positive displacement FF compressor" (published by Tt.R Zude Co., Ltd. on April 5, 1971). ) Figure 15.
1(a)). Meanwhile, a rotating sleeve is rotatably fitted into a casing formed by a cylindrical pinter housing and tatami night housings arranged on both sides of the casing. The rotor is disposed eccentrically at the center of rotation of the rotary sleeve, and a plurality of plate-shaped vanes are fitted into the recess opening f'' of the rotor. During rotation, the rotating sleeve is rotated along with the rotor via the Jζ revane.
ζIt is made by sea urchin. And this rotation n] compressor is
As the rotating sleeve rotates with the vane, heat generation and wear due to sliding of the vane tip are prevented, resulting in longer durability.
Since point C of j1 is right-handed, from low rotation to high rotation (
Recently, it has been attracting attention as it is ideal for superchargers in engines such as engines that operate over a wide range of speeds.

However, for those with rotating rudders and sleeves,
The inner peripheral surface of the rotating sleeve is defined by the inner circumferential surface of the rotating sleeve and the outer circumferential surface of the rotor. The rotating sleeve is pushed toward the discharge port side of the center housing inner periphery Wi by the acting force of The rotational three 1's original R ability was fully demonstrated (Kii ``I had no choice but to become a monster'').

1] Does the compressor solve these problems in the IRJ episode 117 mentioned above? No 2 Zuru L: Put some oil between the sleeve and the center housing.
・The effect of the oil bearing is increased by 1, but this oil supply reduces 19 mm. However, due to its high viscosity, it becomes a source of resistance that suppresses the rotation of three 1.
! It is unavoidable that the drive torque loss of the lit ti will increase, and although it may be a low-speed rotation compressor, it cannot be used practically as a supercharger for an engine that requires high-speed rotation. Ta.

For this reason, the rotating sleeve is of a bearing type, and furthermore, the inner part of the rotating sleeve and the outer part (
A large number of communication holes consisting of small holes communicating with the air bearing layer are provided, and a part of the compressed air in the compression chamber is ejected and supplied to the air bearing layer through the communication holes, and the pressure of this ejected air is It is considered that the contact between the rotating sleeve and the center housing can be prevented in advance. Because the pressure is not sufficient, the air bearing force cannot be obtained in the contact area between the rotating sleeve and the center housing. There is a problem that the contact prevention effect which achieves the purpose of (1) cannot be fully demonstrated, especially in 11 (rotation n
or +, knee 1.1 times 11/iλ League may be pushed and attached to the center housing and not be turned ψIa L'.

(Objective of the Invention) The object of the invention is to provide a rotary compressor in which a right-handed rotary sleeve is provided with a right-handed rotary compressor as described in (1) above. The cross-sectional shape of is 1'! It has a simple structure in which it has a unique shape, and it prevents any contact between the center housing of the rotating shaft 1j-no'.
It actually prevents damage, eliminates local wear, and is safe! The F force is to avoid the one-membered horn, i) - (+(, j11).

In order to achieve 17, ip, rl of the invention, the solution of the present invention is to provide a rotary compressor with a rotary sleeve as shown in -1. - The contact area of the inner circumferential surface of the housing is exposed to J, and it comes out ~1~ (= locally t in the part corresponding to the vicinity of J); l'l!l! L- times +11
7: A large number of communication holes are provided in the sujJ-no to communicate the inside of the sleeve φi, the throat portion of V', etc., and the )f communication rLta
Place x and perform a bombing action on the vane (J-))
(, - an air trap chamber is formed in this inner circumferential opening, and 9
It is characterized by having 11 parts on the 1st side and 11th side shaped into a small (flat and constricted shape).

Due to this, non-invention ζ・1. Above, the rotating sleeve rotates synchronously with the rotor through the vanes, that is, at approximately the same angular velocity, but due to the eccentric structure of the rotating sleeve and the rotor, the circumference between the inner circumferential surface of the rotating sleeve and the tip of the rotating sleeve is Tatsumi's speed has increased. Due to this speed difference, when the tip of the vane passes over the inner opening of the communication hole in the rotational direction or (, 1 reverse rotational direction),
By temporarily retaining the high-pressure air generated at the tip of the vane in the air reservoir chamber of the communication hole, the function of pushing the already retained high-pressure air out of the rotating sleeve is increased.
Furthermore, this pushed out air is distributed between the communication hole glue i and the circumferential side 1]
When passing through the section, the opening on the outer circumference is narrowed to a small diameter.
This creates a discharge resistance and causes the fluid to be discharged under even higher pressure, resulting in a so-called pumping action. As a result of (a), a large amount of high pressure (Q) air is forced upward into the air bearing layer in the contact area (1), and this air bearing force prevents contact between the rotating sleeve and the center housing. There are things that have been left behind.
The above explanation ゛(゛ is ('+ movement, I have talked about air in detail, but it is different from other sword fluids in (G l171
There are many things that can be said to be within the technical scope of the present invention.

(Efficacy of the Invention rR) If the present invention is marked with a -, then the rotary sleeve is provided with a (-). 7. Forming an air temperature chamber in the opening on the inner circumferential side of the communication hole. Outside I? The shape is narrowed down to the diameter of the opening on the 1st side. Prevents local wear and tear (in addition, the rotating sleeve rotates smoothly and reduces drive torque loss by 1'74) and is durable ↑
! I C/) I'll turn the rotating sleeve [r
Practical application of i1 rotation 1i reduction 1 geometry
l-There are practical things.

(Embodiment) Branch 41 of the present invention: An embodiment as a specific example of i-type means will be described based on the drawings.

FIG. 1: 381 shows an embodiment of the present invention. No. ′
1 and 2, there is a sink C, and the casing 1 is made up of a cylindrical housing 2 and housings 1 to 3 arranged on the left and right sides of the casing 1.
, 3 has multiple (four in the figure) fastening bolts 4, 4...
・It is composed of "cn" and "cn".

A cylindrical rotating sleeve 5 whose outer diameter is slightly smaller than the inner diameter of the hinter housing 2 is fitted into the casing 1 so as to be rotatable concentrically with the axis of the hinter housing 2. A gap between the outer circumferential surface 5a of the rotating sleeve 5 and the inner circumferential surface 2a of the center housing 2 (e.g.
50μ) forms an air bearing chamber 6. Further, inside the rotating sleeve 5, a shaft portion 7r+ is provided at both ends.
, 7a to the right, conical shape [ ] - evening 7 is four houses, sleeve 5 is center of the middle of the middle of the middle of the middle of the middle of the middle of the middle of the middle of the middle of the middle of the middle of the
It is arranged so that it is eccentric to the rotary sleeve 5 and inscribed in the rotary sleeve 5 at the sealing point P.
113, a substantially crescent-shaped viewing area 8 is formed between the inner circumferential surface 51) of the rotating sleeve 5 and the outer circumferential surface 71) of the rotor 7. .

One of the above reed housings 3 (II on the right side of Fig. 2'C)
There is also an intake port on the trailing side (left side in Figure 1) of the space 8, facing the space 8I, and the leading side (left side in Figure 1) of the space 8. 1
The discharge bows 1-10 are opened on the right side of the figure, and the inner wall surfaces 3a, 3a of the two side housings 3-3 are provided with both surfaces 5c, 5c of the rotating sleeve 5.
A corresponding annular seal groove 11 is formed, and each seal 1115 is in sliding contact with the rotating sleeve end surface 5cl.
2 is installed.

1:l-, above):l-'z 7 is the shaft portion 7a, 7 at -
J5 in a and C, and 4't r I' both in the id housing 3.3 ()l2k l:'+ /L 'l 3
, 131; Near ＼ horn ring 1/I, -1/l through rotation white/i L, 1 :Q is supported, -13's +II+l+ tli 78 (ri') 2 Figure C (-1 side 1111 part) t, 1 nosing 1 and 1 extending outside, and the extending part of the shaft part 7 if (J
5 is station 4'S2 (, external rotary drive device (this,
J, rotate C rotor 7 via renovation 15
? J: ") L-T Musa 4'1." Try it (yo 4)
The vane grooves 16, 16... are snow-covered in the circumferential direction.
Each of the vanes 16 has a tip (outer end) 17a formed in an arcuate cross section, and a slender plate-shaped vane 17 that moves and retracts in the radial direction of the rotor 7. The vanes 17, 17, which are freely fitted, receive centrifugal force when the row 97 rotates (tip part 17a'
17a... is inside the rotating sleeve 5σ) F,] surface 51)
The space ε3 between the inner periphery of the rotating sleeve 5I) and the outer periphery of the rotor 71) is brought into pressure contact with the rotor in an airtight manner.
-), and in this state, the rotating sleeve 5 is
Rotate the target! It's being done well.

Then, in the ff4j iFi of the present invention, the inside of the rotating sleeve 5 is shown in FIG. Compression chamber”+
A large number of communication holes 19, 19, . A +171 output bar is supplied to the air bearing chamber 6 through C to form a bearing layer between the rotating sleeve 5 and the center housing 2.

] - The communicating hole '19 is formed with an air reservoir chamber 20 in the form of a counterbore in the inner circumferential side 1-1 part 19a, and an air reservoir chamber 20 with an opening on the air bearing chamber 6 side. The outer circumferential opening part 9b has a narrow diameter shape, for example, 1 to 1.
It is formed to a size of 5mmφ.

In addition, the above-mentioned discharge ports 1 to 1 on the inner circumferential surface 2a of the lens housing 2 with which the rotary sleeve 5 has conventionally come into local contact.
The contact area θ, which corresponds to the vicinity of 0, is the contact area θ of the rotating sleeve 5 with the rotor 7 [・Seal point 1) 4-
Pass ii: j diameter I! Il! orthogonal to I +
j (￥ line Tsu (・2λJ and trailing ff1.l
I + near 0°, leap-in'] side (, - corner 1 passing through the center of Tagawa boat 10).

to a maximum of 70°, 1, °C', that is, θ■]→70
°-0: "I/+ (It has been experimentally determined that the value is in the range of 1.

Next, we will explain the drive of the first embodiment.In short, when the rotor 7 is rotationally driven in the direction x1 in Fig. 1 by a rotary drive device such as an L engine, the The vanes 17 fitted in each vane groove 16 receive centrifugal force (
The tip end '17a of the lever touches the inner circumferential surface 51 of the rotating sleeve 5.
), the space 8 between the inner periphery 51 of the rotating sleeve and the outer periphery 71) is sealed.
There are 4 compression chambers 18. ．． 18..., and while maintaining this state, the rotational force of the rotor 7 is transmitted to the rotating sleeve 5 via the vanes '17, 17..., and the rotating sleeve 5 is connected to the rotor 7. With the synchronous rotation of the rotor 7 and the rotating sleeve 5, the volume of the compression chamber 18 changes synchronously, and the compression chamber 18 moves from the suction port 9 side to the discharge bow. 1~'1
As it moves toward the 0 side, the volume gradually increases, and after reaching the maximum volume, it gradually decreases 1. As a result, the suction boat 9
The air sucked into the compression chamber 18 is compressed and pressurized within the compression chamber 18. I) From the discharge port 1-10 to the gauging 1
It will be discharged outside.

At that time, due to the synchronous rotation of the rotating sleeve 5 and the synchronous rotation of the compression chamber 18, the compression chamber 18 moves close to Tagawabo 1 to 10f' Due to the pressure difference between the contraction chamber 18 and the air bearing chamber 6, the 18 contact area θ is J-3 (turn 9) and the communication hole of the sleeve 5'+9.
．． -1')... fp 1. ,□n-6Y air bearing chamber 6
1゜L,,'/) 11. ', 41 (i) If we look at the state of air ejection in more detail, the rotor 7 and the rotating sleeve 55 are almost snowy due to synchronous rotation. rotation center and rotation three 15
Because the center of rotation is eccentric and the center of rotation is eccentric, the circumferential speed of the inner circumferential surface 51 of the mouth sleeve 51 is rotated in one direction.
．． 1', the tip of the ripple vane 17 'l 7 II +'
7:l l;"11)・181-effect is a simple word, -ri,
At this circumferential speed I good 2, J, sl\-n forward,);,;;Part 1
7F or rotating sleeve inner peripheral part 5a 1 jil l l ・
, l <N continuous no lT+ 7L, I O inner circumference side 11
Rotate on the portion 19a in the direction X or in the opposite direction φ1. Passing in the opposite direction. Deshiku, ko (1) /\-/U'L ”I;effect;It
17 a, the vane tip 'l 7 al
, - Light '11J high jE air is empty in communication hole 19%ij
8Yi ',) ``'t'' 20 to 11, 1 Ho 1! ”
There is already a lot of air in the air in the FL. 2 (-) 1.
, m (71'35 ~ t in line with high pressure air:,
1. ! + / Otori (j7 is 17.4 and momentarily +
X acts. In particular, since the shape of the vane tip '17a is an arcuate surface, there is no blocking effect on the air trap chamber 20, and it is effective in generating the air leakage.
, the high-pressure air retention function of this air reservoir and chamber 20, and the function of pushing out the high-pressure air in the air reservoir chamber 20 to the outside of the rotating sleeve 5 (toward the air bearing chamber 6 side) for f1 of 1j and J′f. is increased, and a large amount of high-pressure air flows into the air bearing chamber G.
1′ to the side! [As the discharge surface and the communication hole 1
Since the two outer circumferential sides [1 part 'I91) are narrowed to a small diameter, the resistance is increased and the state C is compressed to a higher pressure.
The air is ejected into the air bearing chamber 6. 51: A kind of pumping effect has occurred. As a result, a large amount of air is present in the air bearing chamber 6 (earth bearing Fi) in the contact area O. The package will be filled.

This state (゛, the above rotating three 7゛1] or 1-1 contraction''7
18 high pressure side (discharge bow 1-1011111) and low pressure side (suction bow 1-9 side) +
1IIJ! Even if it is close to the area θ, due to the high pressure air,
When approaching the center housing 2, the rotating sleaze 5μ moves to a position where it receives the repulsive force and maintains the state.

Therefore, this J, with the internal acting force, the center H -
It is pressed against the 1-sen contact area θ of the inner surface 2a of the 1-jing. 1
．． -',) The rotating sleeve 5 is supported by high air pressure to prevent contact at -, and the rotating sleeve 5 can be rotated smoothly, thereby preventing local wear unlike the conventional method. 1.1. Reduce drive torque loss? Monkey.

1':j, the 1-th bombing action is [■ degeneracy 1F3
Since this occurs in proportion to IF, the air bearing chamber O in the above contact area O(゛) is filled with air according to demand
, j−> , Jbi1 force is 1′? The contact prevention effect described above can be effectively exhibited at all times (also, smooth rotation of the rotating sleeve 5 can be ensured even at low rotation speeds).

In addition, -1 Length Example ゛( is the inner circumferential side of the communication hole 19 [1 part 19i1 is made into a counterbore shape and the C air reservoir chamber 20 is formed.
This is Fig. 4 (- Acceptance, 1. Sea urchin, open the communicating hole 19', outside 17; 11t!'1 [1 part - 19'l] l] s r
Between the inner circumferential sides of the filter [1 part'+9'ak facing/-ζ widening 11 row j
- By forming it in a par shape, the inner circumferential side [-1 part 19'
An air storage chamber 20' is formed in a, and the space between 1-1 part + on the outer circumferential side is
9'l) has a shape narrowed to a small diameter,
It can achieve the same effects as the above embodiments,
.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a longitudinal sectional front view;
2 is a sectional view taken along lines IT- and II in FIG. 1, FIG. 3 is an enlarged sectional view of a main part of the rotating sleeve portion, and FIG. 4 is a view corresponding to FIG. 3 showing a modification. 1...Casing, 2...Center housing, 3
...Side housing, 5...Rotating sleeve, 7.
...11-ta, 17...vane, 19.19'...
・Communication hole, 19a, 19'a... Inner circumference side part, 1
911.19'ri...outer circumference side 11 parts, 20.20'
...Air storage chamber. Patent applicant: Toyo]
In public ['''' Hiroshi
IF'・5' 1. Indication 1981 Patent Application No. 56977@2, Name of invention Rotary sleeve 3 of rotary f1 compressor, Relationship with amended party 13f1 Special applicant address 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Name (313) Toyo Kogyo Co., Ltd. Representative Yama I
Shizuo Jujo Sokuto ・550 Electric 06
(4/I 5) 2128 Address Taihei Building 7, 1-4-8 Utsubohonmachi, Nishi-ku, Osaka Please inscribe (1) in the 17th line of page 8 of the statement of contents of the amendment.
[Corrected to "maintain minimum clearance."that's all

Claims (1)

[Claims] (1) A goo:fu formed by a cylindrical center housing and lead housings placed on both sides of the center housing. A rotary sleeve rotatably fitted in the shing, and a rotation center of the rotary sleeve (:λ=J
L-c 1 is eccentrically arranged and rotationally driven from the outside;
said 11-ta rotation i,
: , J Revane fr L, rotate three〕゛: l
f7. The rotary pressure 11i and the rotary pressure 11M are set to 51-), and a large number of communication holes are provided in the rotary sleeve to communicate the inside and outside of the rotary sleeve. The communication hole a is characterized in that an air reservoir chamber is formed at its inner circumferential opening, and between the +? ',1