JPS5932692A - Scroll compressor - Google Patents

Abstract

PURPOSE:To stabilize the oil feeding performance of the scroll compressor by a method wherein oil is separated by an oil separator from discharged gas, discharged from a discharging port into a discharging chamber, to feed it to a bearing metal through an oil feeding path by the discharging pressure thereof. CONSTITUTION:The oil, separated by the oil separator of the discharging chamber 20, is fed to the bearing metal 37 through an oil hole 33, povided on a fixed scroll 1, and the oil hole 33, provided on a bearing support 7. Further, the oil is supplied to a thrust bearing 35, the bearing metal 39 and the like through the oil hole 33, and oil grooves 62, 63. After lubricating the bearing metals, the oil is atomized by the effects of the flow speed of suction gas and a stirrer 18 and is taken into a compression chamber together with the suction gas.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conventional oil supply device d for a scroll compressor.

The object of this invention is to provide a scroll compressor with
This relates to the configuration of the oil supply system, in which oil separated from the discharge machine body is supplied to the bearing metal part by discharge gas pressure.
The objective is to provide a scroll compressor that exhibits stable oil supply performance over a long period of time.

Before entering into the description of this invention, the principle of a scroll compressor will be described.

The basic elements of a scroll compressor are shown in FIG. 1. In FIG. O is a fixed point on the fixed scroll, α is a fixed point on the oscillating scroll.The fixed scroll ti+ and the oscillating scroll (
The 2-ring is composed of spirals with the same shape, and its shape is as follows.
As conventionally known, involute or
It is a combination of circular arcs, etc.

Next, I will explain the 11 works. In Fig. 1, the fixed scroll (1) is stationary with respect to space, and it does not shake! 1d1
The scroll (2111i) is combined with the fixed scroll 11+ as shown in the figure, and rotates at a rotational speed of tio+, that is, oscillates, without changing its attitude with respect to the space. Fixed scroll Il
The volume of the crescent-shaped compression chamber f4N/jlljα formed between + and the oscillating scroll (2) is reduced, and the gas e taken into the compression chamber (4) is compressed and sent to the discharge port (3).
).

During this period, the distance lII from 0 to α in FIG. 1 remains constant. a corresponds to the pitch of the spiral.

The outline of the device known as a scroll compressor is as follows.

Next, the construction and operation of a specific embodiment of a scroll compressor, including this invention, will be explained in detail.

Figure 2 shows a specific example of a scroll compressor used in refrigeration or air conditioning, which is configured as a compressor for a gas such as chlorofluorocarbon, and has a so-called semi-closed configuration. It is something that you have.

In FIG. 1, (1) is a fixed scroll, (2) is an oscillating scroll, (3) is a discharge port, (4) is a compression chamber, (60
(6) is the crankshaft, (7) is the bearing support, (8) is the electric! 1lIJ machine rotor, (9) is the motor stator, (10) is the first balance, (Il) is the second balance, (+2ji-i: key, (13) is the spacer, (I4) i-fold key (+5) is One shoe, (+6) is a non-rotating washer, (17) is a rotor locking nut, Qs)
is the stator, (19) is the bolt, (20) is the discharge damper, 1) is the bolt, (22) is the 0 ring, 12: ()
is Shell, (24) is Sdata City Mepol), +25+
is washer, +26) support ring, bottom plate is (28)
) are suction screw holes, (29) to (34 are blank screw holes,
(33) is oil filled, (3) is Oldham joint, (υ35) is thrust bearing, (3■ is bearing metal, (3) is bearing metal, (38) is thrust bearing, (39) is bearing metal, (4
0) is vermetic ink terminal, circle is hermetic terminal,
(The number 4 is the crankshaft eccentric hole.

The above are the main components, and Figure 3 shows the In-I shown in Figure 2.
This is a sectional view taken along line II. In the figure, (6) is the crankshaft, (
7) is bearing support, (341 is Oldham joint, (to) is thrust bearing, esnj bearing metal, target is bearing metal, (
42 is the crankshaft eccentric hole, +43) is the Oldham guide groove, (44) is the suction 1-1, (45) is the O-ring groove, (4
6) is a through hole for a bolt, and (47I is a female screw).

Furthermore, Fig. 4 is a sectional view taken along line W-w in Fig. 2, and in the figure C
+11 is a fixed scroll, (2) is an oscillating scroll,
(3) is a discharge port, (4) is a compression chamber, (46) is a through hole for a bolt, (4η is a female thread, and (ruts are communication parts).

The configuration of each component of the scroll compressor configured as described above will be explained in detail.

FIG. 5 is a perspective view showing a fixed scroll, and in the figure, (1) is a fixed scroll, (3) is a discharge port, and +4 is a perspective view of a fixed scroll.
F]) tJ:, fixed scroll teeth, i0) is the fixed scroll base plate, town) is the through hole for the bolt, and country is the fixed scroll retaining bolt counterbore. The fixed scroll has a shape in which spiral grooves are provided on a disk of uniform thickness, and fixed scroll teeth (49) are formed as a result of providing the grooves.
I'm l. The part where the groove was not cut out becomes the fixed scroll base plate part 0).

A discharge port (
3) is provided, and the inner surface of the discharge port (3) is threaded to enable connection if necessary.

The fixed scroll locking bolt counterbore of +5'lJ is provided to prevent the head of the bolt from sinking into the counterbore when the discharge chamber 120) shown in FIG. 2 is installed.

FIG. 6 is a perspective view showing an oscillating scroll.
(54) is an oscillating scroll base plate, (5(f) is an oscillating scroll shaft, and (6 is an Oldham pawl).

The oscillating scroll teeth (53) are connected to the oscillating scroll base plate (54).
) is integrally molded with the Oldham pawl (5
(v) and the swinging scroll shaft (55) are also integrally molded.

FIG. 7 is a perspective view of the swinging scroll seen from the back 1ai, and in the figure, (2) is the swinging scroll,
(53) is an oscillating scroll tooth, (b+) is an oscillating scroll base plate, (60 oscillating scroll shafts, (56) is an Oldham pawl, (57) is an oscillating scroll balancer, (58)
) is the (Lancer) city bolt. The oscillating scroll shaft (
The center of the 5mm and the center of the oscillating scroll base plate (c) 4) coincide with each other and are formed at °C. Oldham pawl (5 [a
is fitted to the Oldham joint shown in Figs. 2 and 3, and 1; j' + 1ldj scroll (
2) and the fixed scroll (3), and is a necessary part to fully express the swing motion ωl of the swing scroll (2). Oldham pawl ([i
6) are arranged on a straight line with J controlling the center. The scroll shaft of +1 (60 is shown in FIG. In response to the rotational force exerted by (6), 1ffi ;lif + scroll (2
)) This is the part for realizing the eccentric rocking motion of (a). The center of gravity of the oscillating scroll teeth (53) of the oscillating metal roll balancer (l'', +its: tσj scroll (2)) is
4: In order to correct the static unbalance caused by the center not being aligned with the center of Is it the center of gravity of the entire scroll (2)?
Oscillation 10; Fuscroll axis (aligned with the center of 5-yen.

The balancer 11 bolt fixes the swinging scroll balancer to the swinging scroll base plate value 4).

FIG. 8 is a perspective view showing the bearing, and in the figure (7
) is bearing support, (31+ij blind screw hole, (33) is Urayasu, (359 is thrust bearing, i7) is bearing metal,
+38j is thrust receiver, (43) is Oldham guide groove,
(44) is a suction 1, (40 0-ring groove), (46) is a through hole for a bolt, and (47) is a female screw.

The bearing metal c'ti part of the bearing support (7) has a second
The crankshaft (6) shown in the figure is fitted so that the stepped portion of the crankshaft (6) rests on the thrust receiver (38). The part of the thrust bearing (35) has the function of supporting the back of the swinging scroll base plate (541) and receives the thrust applied from the swinging scroll (2).In some cases, the thrust bearing (35) ) has the function of providing a supporting force commensurate with the thrust applied from the oscillating scroll (2), or a force greater than that by introducing a pressure of 11 to the surface of the Oldham guide groove (the value is shown in At the part where the Oldham joint (34) shown fits, the Oldham joint (34) is fitted.
The third slope is the part that performs linear reciprocating motion. Inhalation U1 (4
4) are provided in this embodiment, and llll
1 receipt and expenditure, 1-(7) is facing. The end face of the bearing support (7) is provided with a large O-ring groove (retainer).
A female screw for fixing the bearing support (7) and the fixed scroll (1) [3, which has a through hole for a bolt to fix the whole thing, and a Urayasu (33) for oil supply and a blind screw that communicates with it. The hole (:11) is used, for example, to measure the supply oil pressure. Through hole for bolt (4
The end face where the female thread (471 is installed) and the face of the thrust bearing (35) are 10.+1 m to 50
The L↓ with the fixed scroll I11 fixed to the end surface sinks by an amount of about μm, and the fixed scroll I11 is fixed so that the scroll (2) can swing ('). This state is shown in Fig. 2. well understood.

FIG. 9 is a perspective view showing the Oldham joint, and in the figure, (3+) is the Oldham joint, 9) ll-i bearing fitting pawl, t6t"I iIJ rocking cut scuffle surface fitting groove, [The ring is opened at 611.] As shown in Fig. 1, the four dam joints (34) are used to maintain the relative positional relationship between the fixed scroll (1) and the floating scroll (2). The swinging orbit of the movable scroll (2) is defined together with the crankshaft (6).

Is the bearing fitting pawl (h9) the org guide of the bearing (7)? R (43), and the rocking metal roll 11 is fitted into the guide groove (the ring is the 6υ bearing fitting pawl (59) and the rocking The movable scroll fitting guide groove side is configured to be perpendicular to the center thereof.

The rotation of the crankshaft (6) causes the swinging souffle (2
) performs eccentric movement, the bearing 1M joint (59) of the Oldham joint (34) fits into the Oldham guide groove (43) of the bearing (7), and the entire Oldham joint (34) A reciprocating linear motion is performed in the direction of the Oldham guide groove. In this state, the rocking scroll (2), which is fitted into the Oldham joint (3 (1)) via the rocking scroll 4M joint guide groove side, moves in a reciprocating linear motion relative to the Oldham joint (c). As a result, the oscillating scroll +
21 By combining the two intersecting reciprocating linear motions, the eccentric 11jlJ motion is realized. The above is the configuration and operation of Oldham's joint (4).

Figure 10 is a perspective view showing the Kurayu Rishaft (61 is the crankshaft, (33) oil filler, (3
6) is the bearing metal, (4 is the crankshaft eccentric hole,
(63) is the oil groove, (Fi4), (fi51-key groove, (6 (→) is the crankshaft large diameter shaft part, +67) is the rotor mounting part, and the crankshaft large diameter shaft part (smaller diameter crank than the example) The small-diameter shaft part and the large-diameter crankshaft part (6 (0) constitute the crankshaft (6), and form an attachment part between the small-diameter shaft part and the large-diameter crankshaft part (67). 6) indicates the shaft fitting part, +69) indicates the screw for the stator fixing nut,
(7+1) is a groove for a locking hooker.

Crank $l+ (6) is electric 11 that can be accessed at the rotor mounting part (67)! Receiving the driving force of the IJ machine rotor (8), the oscillation that fits into the crankshaft eccentric hole (1 σJ)
The crankshaft eccentric hole (4) provides rotational force to the scroll (2) and fits the scroll shaft (65).
A metal bearing (3G) is provided in the case. The bearing metal (3G) may be a normal bearing alloy or a so-called needle roller bearing. Bearing metal (
36) Is there oil for refueling? i't +63) is not installed, and this is usually QJ on the anti-load side. The crankshaft large diameter shaft portion (66) fits into the bearing metal 137) portion of the bearing support (7), and the stepped portion 1 of the crankshaft (6) and the thrust bearing (38) of the bearing support (7). ). The large diameter shaft portion (66) of the crankshaft is provided with an oil groove (62), which constitutes an oil supply path.

Furthermore, connect to the oil groove (6 (6), 1ti3) and install the oil groove (6 (6), 1ti3).
33) are provided at two locations in the figure, of which the wood passes through the central axis of the crankshaft (6) and connects to the shaft fitting portion (68).
) can be refueled. Keyway (64
) is for fixing the first balance shown in Fig. 2, and the keyway (65) is for fixing the electric machine rotor (
8).

The shaft fitting part (G is the part that fits into the bearing metal part 7 of the bottom plate Q shown in Fig. 2), and the crankshaft (
6) Constrain and support the radial direction titit+. The stator fixing nut red J screw (69) has the number 1 shown in FIG.
Nine openings/-evening stop nut Q7) is accommodated (q is inserted, and the groove for the locking hooker (7(1) K is the opening/-evening stop nut (7(1)).
No.1's non-rotating washer (the lfij's claw part goes in).

Figure 11 is a parent diagram showing the first balance.
In the figure, (ILI) is the first balance, force 11d balance weight (72) is the cylindrical part, (73) is the fixed part, (
7 Condolences is key 1R.

The first balance (10), together with the second balance (11), as seen in FIG.
This provides balancing against the centrifugal force derived from the eccentric rocking motion of the rotor, ensuring quiet operation of the entire rotating system. The first balance +10+ is the fixed part (73
)K key (12) inserted into the key groove provided in )K
It is fixed in the keyway (6(1)) of the crankshaft (6).

Balance way 11) is installed via the cylindrical part snout so as to be located in the space formed between the bearing support (7) and the motor stator (9) in order to downsize the entire compressor. 'C is there. It's a balance weight (71) part l
] is bent in the axial direction by the polar horn oscillating scroll (2), and by separating it as far as possible in the radial direction from the center of the crankshaft (6), the balance way Bylnoif<
Minute 1tt is made smaller. Oscillating scroll (2)
11) If it is made entirely of normally used cast iron or spheroidal graphite cast iron, its mass can be ignored, and the mass of the balance way H71+ portion will also be large, so take the above measures. EE w This prevents the entire machine from becoming too large in the axial direction.

The first balance C71) is a bearing support ('l), J: electric 1
[il] It is installed by making good use of the space created between the machine stators (9), contributing to the miniaturization of the entire system.

FIG. 12 1 is a perspective view showing the electric MIJ machine rotor,
In the figure, (8) is the motor rotor, (U+ is the second balance, V6) is the end ring, and +76) is the N keyway. The electric motor rotor (8) is inserted into the keyway of the crankshaft (6) (
65), the key that matches the ghee I wave (7G) K lik (
14), which applies rotational force to the crank 11III (6). , a second balance (11) opposing the swinging scroll (2) (τ) is provided at one end of the r-end ring 4, and both the first balance (rule 11) and the other balance (11) have a small overall vibration.

Fig. 13 is a perspective view of the electric +lJ machine rotor (8) in Fig. 12 seen from the opposite side.
-ta, (11) beam 5 balance, (18) stator, (19) bolt, (75) end ring, (,'
Fi) l'i keyway, (77) is a stator fixing screw hole. It is fixed to the end ring (70) by the second balance (11iJ pole I-(+9).In fact, the stator (18) is fixed to the end ring (7θ and the second balance (11)!). Fixing screw hole (fixed in 7 holes) L etc.

Each of the above parts is shown in the assembly diagram of Fig. 14.
It can be assembled like this.

At Fig. 14 Cζ, the crankshaft (6) is attached to the bearing support 7.
- (7) and IIV combined +7, then Oldham joint (
Insert 34) into bearing ☆ deficiency and (7). Oldham joint (from the top of 341: 11, fj1 scroll, o, (21
into the crankshaft (6), and attach the fixed scroll il+ from that position to the bearing support, t.
-+7) + to fix. Attach the single balance loi from the bottom of the crankshaft (6), insert the subeza (13), and determine the axial position of the machine rotor (8) of the motor rotor (8) with steps 1-2. Department to Sotsusha (15)
, with the rotation stopper v1.1 [)), the first balance 11 (1), the Nubesa (13), and the electric 11J machine rotor (18) are integrated with the rotor assembly nut θη, and the crankshaft ( Fix 61K.As shown in Figure 2 ((
, the first balance (10) corresponds to the stepped 7jl□, u) of the crankshaft (6) and serves as a stopper.The electric WJ machine rotor (8) has a second balance (1
1) and Stark (I8) are in Jl.

FIG. 15 is an assembly diagram showing the procedure for assembling the inside of the Tsuda compressor as a whole.

A discharge chamber (20) is fixed to the upper surface of the assembled fixed scroll ill by a Poldau 9). In the discharge chamber (20), as shown in FIG.
) opens the fixed scroll (1) and is screwed into the female thread (80) provided on the upper surface of the shell (23) to achieve fixation.

Shell t23) K is the stake 1 shown in FIG.
1-1 bolt (24)
9) is fixed tongue. Shell (upper end surface of the shell ((keQ)
The O-ring (No. 4 is housed in the IJ rung groove 81) for sealing. As shown in Figure 15, the O-ring (No. 8 is the coil end of the motor stator (9). As shown, an inlet is provided on the back side of the bearing (7) and recessed into the shell (23). ) to accurately create an air gap that is formed concentrically between the two.

The shell (4's outer periphery has a hermetic end 3' (ai
! -・(41) is a closed connection pano 1. For example, the hermetic end of two bottles f-(4tl)-motor stator (
9), and the hermetic end -f-(41) of the three bottles is for supplying three-phase AC power to the air 1lIII machine stator (9), and the shell (relatively The pair 17 acts as an insulator, and the outside air pair 17 acts as a door.

Finally, attach the shell ('
23). The assembly diagram in Figure 16 shows how the bearing metal (39) of the bearing (wing) of the bottom plate (23) is attached to the shaft fitting part (23) of the crankshaft (6). 6 (to).

This concentric '-Ki J1. ! In order to
7) is provided.

Since the mag ζ is dense 1, there is an O-ring (4t11 including 4 (□J-, :d) in the O-ring groove (90). Connect the female screw (85) of the flange (34) and the bolt +891 +.
('/: (l i' (“hard”. It is displayed.) At the bottom &) there are l and six screws for use in the shell iL.

As described above, it is assembled into the shape shown in Figure 2.

Let us briefly explain the function of the scroll 1 shown in FIG. 2 as a whole of the double compressor.

Hermetic) Through Naruko (41), Denll1II
For example, when three-phase alternating current is supplied to the machine data (9), the motor rotor (8) generates torque and the crankshaft (6)
It rotates once. When the crankshaft (6) starts rotating, the rotational force is felt on the scroll shaft (6), which bottoms out against the eccentric hole of the cluster shaft (6), and the swing scroll (2) is attached to the bearing support (7) K. Guided by the Oldham joint (1), an eccentric oscillating motion '/f' is realized. Then, the compression action shown in Fig. 1 is performed, and the compressed gas is discharged from the discharge port (3). The inhaled gas, for example 170 liters, flows in from the suction screw hole (outside the screw hole) of the bottom plate (27) and passes through the air gap between the rotor (8) and the motor stator (9). Passing through the gap between the stator (9) and the shell (C), the 1st and 1st person D 1.4) thrown into the bearing support (7) (see Figure 3),
After Io part 1 state, the swinging sufu [7-rule (2) and fixed scroll! 11 into the compression chamber (4).

This is the general outline of the operation.The oil supply system is connected to the discharge chamber (2
(1) has a built-in auxiliary oil separator (not shown), so the oil separated by the oil evaporator of the discharge chamber (20) is stored in the fixed suflow rule 11). It reaches the bearing metal f; 47) through the oil filler (33) provided at (7). Furthermore, the oil filler (33t), groove (67!, (61!) shown in Fig. 10)
Thrust bearing (35), bearing metal (39)
), each part of the thrust receiver f3al is also supplied with oil. The oil that has passed through the thrust bearing (3h) is stroked together with the inhaled gas and taken into the iron compression chamber. Thrust receiver +38),
The oil that has passed through the bearing metal +: +9) flows out into the shell (23), and the rM, velocity, and starch (1) of the suction gas are
It is atomized by the action of 8) and taken into the compression chamber together with the flash gas. F′ together with the intake gas
F-, the oil is taken into the storage chamber (4) and fills the radial and axial gaps between the fixed scroll teeth 14q) (see Figure 5) and the scroll teeth (63) to minimize leakage. It has a suppressing effect. The cleaning oil that flows out from the thrust bearing also lubricates the moving surface of the Oldham joint (1-4). In this way, it is discharged again.
) is separated by an oil separator (not shown) and is forced into the oil supply line by the pressure of the discharged gas. During this time, if the oil is not separated by the oil separator, the oil will circulate through the refrigeration cycle and return to the suction screw hole (28) together with the suction gas when used as a refrigerator, for example. However, the oil separator may not be inside the discharge chain (O), but it may be external (even if it is outside). Detects temperature rise, etc. during overload or abnormal operation of the motor stake (9), and protects the motor stake (11) (for example, by cutting off the three-phase AC power supply) This is what we do.

Now, let us explain in more detail the construction and operation of the thrust bearing of the above embodiment.

In Fig. 2, the oscillating scroll (2) and the bearing support (7) are shown.
) The oil flowing into the contact part P of the thrust bearing (35) is
It is fed under pressure by the discharge gas pressure from an oil separator (not shown), and by designing the pressure loss of the oil path to an appropriate value, a specified pressure can be maintained. The force of this pressure integrated over the thrust bearing (35) opposes the thrust force of the pressure derived by the oscillating scroll (2) in the compression chamber (4).

If the integrated pressure of the hydraulic pressure is smaller than the thrust force or equal to C, a gap may occur in the axial direction as shown in Figure 2 [ii R, S are the values set at the time of design, 10.
It will be operated with the culm open by z1m. Also, the end face of the fixed scroll fi+ and the oscillating scroll (2))
:'? , 1Aij+Scroll A similar gap is also generated on the opposing surface Q of the upper end surface of the scroll base plate (64).

In this state, when turning to 11, the axial sealing of the surfaces R and S is obtained by the oil taken into the compression chamber (4). In this case, the thrust force and force are
', 0 thrust bearing (will be covered in 3 clauses).

According to experiments, the sealing effect of oil makes it durable in practical use.
? Ura enough to stop, j! , is guaranteed. In this state, the thrust bearing (g + ri) with insufficient lubrication at the time of stop becomes a problem in maintaining the axial clearance, but this can be solved by selecting the material. Ru.

In addition, if the design is such that the integral of the oil pressure is greater than the thrust force, the oscillating scroll (2) will be -1-
Pushed by the force, in Figure 2 R or i-,
It will slide at t, S or Q.

When sliding in the R curve, the tip 1n1 of the oscillating scroll tooth f53) of the oscillating scroll (2) (see Fig. 6) and the rotating scroll base plate (50) of the fixed scroll (2)
(See figure M s) The bottom surface on the compression chamber side slides.
! : Even in this case, the pressure receiving area of the tip surface of the oscillating scroll teeth (53) can be ensured sufficiently, so that operation is possible. The front surfaces of both tanks are lubricated with oil taken into the compression chamber (4)K.

When sliding with S (-1, fixed scroll +11 fixed scroll teeth +49+ tip surface and oscillating scroll (2
) The two surfaces of the swinging scroll base plate (54) slide, and operation and lubrication are possible in the same way as in the previous case.

h of the oscillating scroll base plate extension 4) of the oscillating scroll (2)
When sliding on the surface Q in Figure 2 by increasing the dimensions of the peripheral part of the surface, a slight clearance will occur at the design value in the part of ■ < , S, and the thrust bearing (35) will be replaced To,
The fixed scroll (1) is oscillating on the outer peripheral surface of '17M.
The periphery of the upper surface of the J scroll base plate (54) will slide, and in this case as well, lubrication, operation, and sealing will be performed.
'It is capable.

When the thrust force is made to be upward K in this way, the engine is operated by maintaining the clearance at a certain level of 191 to P.

A thrust shaft designed to satisfy these requirements, 9 (
In 35), operation is possible even if load fluctuation occurs and the direction of the total thrust force changes.

Incidentally, in this case, the radial component in FIG. 2 has a constant clearance of 10 to 50 μm and is sealed with oil.

As described above, according to the present invention, a discharge chamber communicating with the discharge port of the compression chamber and containing an oil separator is provided,
Since the oil separated from the discharged gas is supplied to each part of the bearing by the pressure of the discharged gas, a pump is not required and the number of moving parts is reduced, increasing the reliability of lubrication and ensuring stable lubrication. Ru. In addition, since the amount of oil supplied depends on the operating pressure conditions and is unrelated to the rotation speed, stable oil supply can be performed regardless of the rotation speed even when the compressor is operated at variable speed. It is possible to prevent an increase in loss of 4 it due to bearing trouble or excessive oil supply during high speed rotation.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the principle of operation of a scroll compressor, Fig. 2 is a sectional view showing an example of the scroll compressor of this production, and Fig. 3 is a sectional view taken along the line lll-In of Fig. 2. , FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is a perspective view showing a fixed scroll, and FIG. 6 is a perspective view showing an oscillating scroll.
Fig. 7 is a perspective view showing the oscillating shaft O-le; Fig. 8 is a perspective view showing the bearing; Fig. 9 is a perspective view showing the Oldham joint; Fig. 10 is a perspective view showing the crankshaft; The figure is a perspective view showing the first balance, Figures 12 and 13 are perspective views showing the rotor of the mold section, Figure 14 is an assembled view of the compressor, Figure 15,
FIG. 16 is an assembly diagram of the entire rice shrinking machine including the shell. In the figure, (1) is a fixed scroll, (?) is an oscillating scroll, (3) is a discharge port, (4) is a compression chamber, and (6) (
- Crankshaft, (20) is the discharge chamber, (33) is oil filled, S5) is the thrust bearing, (3B) is the bearing metal. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa Figure 1 Figure 2 Figure 13 Figure 1. -1 Figure 5 1 6th Figure 9 1/. -563- Fig. 10 Fig. 11 Fig. 12 Fig. 6 Fig. 13 Fig. 1/1 - Plan 5 to -17

Claims (1)

[Claims] Fixed scroll teeth and oscillating valve L7 configured in a spiral shape
- a fixed scroll and an oscillating scroll that combine with the r teeth to form a contracted chamber on both the above-mentioned two sprocket teeth;
J-Crank that applies rotational force to the oscillating scroll-h
4. A bearing for supporting the crankshaft is installed on the back side of the fixed scroll, and communicates with the discharge port of the compression chamber. Ill-seba l,'-
(iii
Discharged from the above-mentioned discharge gas [1] to the above-mentioned discharge CHAYU/PAIN, the oil is separated from the discharged gas by the above-mentioned oil separator 19, and the oil is transferred to the above-mentioned bearing through the oil supply system line above the workpiece by the pressure of the discharged gas. A sufro-le compressor characterized by supplying to metal parts.