JPS5830404A - Scroll fluid machine - Google Patents

Abstract

PURPOSE:To prevent seizure due to incorrect positioning, by performing pin coupling, between a fixed scroll member and turning scroll member, through a rotation preventive ring and surely performing positioning. CONSTITUTION:A circular groove 8 is provided to a surface of a fixed scroll member 1, jointed with a turning scroll member 2, and a rotation preventive ring 7 is fitted into the circular groove. A hole is provided in an eccentric position of the rotation preventive ring 7, and a pin 6, protrusively fixed to the turning scroll member 2, is fitted into said hole. This pin is used, and the turning scroll 2 and the fixed scroll 1 can be surely performed positioning.

Description

[Detailed Description of the Invention] Kinei Ichiriki is used as a scroll compressor for gas, 4 compressors for refrigeration, 4 compression bales for air conditioning, 4 for air compression, and 4 for plants! , I
This invention relates to a scroll fluid machine that can be used to compress gas, and can also be used as a gas expander if the orbiting scroll member is completely reversed.

Crawl wrap) lb is a fixed scroll center, 2a is an orbiting scroll wrap, 2b is an orbiting scroll center, and 3 is a discharge boat. Isame C (In Figure 11 (a), fixed and rotating scroll wraps 1a and 2a
When C is an involute or an involute with an adhesive shape, the combination of these (C and C) forms a sealed fluid pocket 4 (for example, the dotted area in the figure).This fluid pocket 4 is fixed scroll center 11)]
The upper 9 full orbiting scroll center 2b has a orbiting radius ε of 11M.
By turning the (b) figure? As shown in FIG. 1 and (C), the volume is reduced while moving to the center, and the fluid is discharged from the tote 3 to perform a fluid compression action. ``Also, if all the orbiting scrolls are rotated in a direction opposite to the above-mentioned rotation direction, a fluid expansion effect is performed. At this time, the optically rotating scroll member 2 (see No. 21A) must not rotate regardless of the direction of rotation, and for this reason, a rotation prevention device 11 is provided. Anti-rotation 4% 1tlfη is an orbiting scroll member that accommodates a bottle 6 protrudingly attached to a frame 5 shown in FIG. Round hole 8 provided in 2
P is configured by providing a plurality of each. FIG. 3 is a cross-section tt17 of FIG. 2, and shows the principle of the rotation prevention mechanism.

In FIG. 3, 60 is the central axis of the bottle 6, 7C is the central axis of the ring 7, and 9aC and 9bc are the main shafts 1111+ of the crankshaft 9.
9 a *- and the respective central axes of the crank bin 91). The distance between the centers 11116c and 7C is the eccentricity ε of the crankshaft 9, that is, the center axes gBc and 91
) Distance of C 1jjll: is equal to 6C and 9b
The distance of C is equal to the distance of 70 and 9aC.

Therefore, each center 11QI] 6c, 7C, 9aC, and 9bC has a point of intersection with a plane perpendicular thereto to form each vertex of the parallelogram.
When rotates with rotation radius ξ, the bottle 6 also rotates with the center axis 7
It rotates at the same rotational speed as the crank bin 9b with a total radius ε of the rotation C. At this time, the orbiting scroll member 2 coupled to the bin 6 performs an orbiting motion with a radius ε without rotating.

Next, the conventional technology of the scroll gamma noit body system will be explained with reference to FIG. FIG. 2 is a cross-sectional view of the main parts of a conventional scroll compressor, and this diagram is used to explain the basic 41q configuration and operation tone of the conventional scroll compressor.

When the crank l1ill 9 is driven and rotates 1111 times, the crank bin 91] rotates with a radius, and the orbiting scroll member 2 rotates via the orbiting scroll 11111 bridge 2C. The rotating scroll member 20 has a frame 5.
This is done by an anti-rotation device 114 consisting of a ring 7 with an eccentric hole and a round hole 8 provided in the orbiting scroll member 2K. Due to the swirling movement, fluid is sucked in from the suction boat 10 and confined in the fluid pocket 4;
It is compressed and discharged from the discharge boat 3. If the rank shaft 9 is reversed, the fluid is sucked in from the discharge boat 3, expanded and balanced and discharged from the suction boat 10, contrary to the above. This conventional structure has the following drawbacks. That is, in order to completely form the fluid pocket 4 between the fixed scroll wrap 1a and the orbiting scroll wrap 2a, it is necessary to arrange the fixed scroll member 1 and the orbiting scroll 1fls material 2 in the regular position 1#',# relationship. If this positional relationship deviates from the normal position, contact will occur between both scroll wraps, resulting in seizure or an inoperable state j41. In the conventional configuration, there was no accurate method for positioning the fixed scroll member 1, and the fixed scroll member 1 was fixed by interlocking. Therefore, it was difficult to accurately determine the proper heel position 11t. In addition, in order to accurately position it, for example, there is a method of using a dowel pin, but in this case, there is a disadvantage that the number of processing steps increases and the heat is 114I].

The purpose of the present invention is to provide a scroll fluid machine having a structure in which a fixed scroll member can be accurately positioned and the cost required for the positioning is not required.

In order to achieve the second object, in the present invention, an anti-rotation mechanism is provided between the fully fixed scroll member and the orbiting scroll member. As a result, the identification scroll member and the orbiting scroll member can be easily arranged in a regular positional relationship since the entire rotation prevention mechanism is interposed therebetween. ff:r In addition to the original purpose of the white roll prevention upper crosspiece structure, the positioning VC is also used for the 1st function, and in this case, it also increases the processing man-hours, and therefore the price increases. will not occur.

Hereinafter, an embodiment of the F1 invention will be explained using 4th to 131':/I.

In FIG. 4, an anti-rotation device 41q consisting of a pin 6, a ring 7 and a round hole 8 is interposed between a fixed scroll member 1 and an orbiting scroll member 2. FIG. 2 is a cross-sectional view of a main part of an embodiment of a scroll fluid machine gutter having an S-shaped structure. A plurality of rotation prevention mechanism parts are attached. The pin 6 is provided to protrude from the orbiting scroll member 2, and the ring 7, which is mated with the pin with a slight gap, is inserted into the round hole 8 provided in the frame 1, and is mated with a slight gap t=i. It's a shame. By driving the crankshaft 9, the orbiting scroll member 2 rotates, and the gas is fully compressed or expanded. Here, fixed scroll member 1
Regarding the positioning with respect to the orbiting scroll member 2,
Since the pin 6 and ring 7 are interposed between the two members with a small gap, proper positioning can be easily performed by simply assembling all of these parts, that is, the fixed end, the orbiting scroll member, the pin, and the ring. After assembling in this manner, the fixed scroll member 1 and the frame 5 may be connected, for example, by bolts. Regarding the relative positional relationship between the fixed scroll member 1 and the frame 5 at this time, the central axis position of the orbiting scroll member 2, the bearing 2C and the crank pin 9 are
Since the position is determined by engagement with b, the center 16' of the fixed scroll is also positioned accordingly. Regarding the positioning of the fixed scroll member 1 in the circumferential direction,
(Geometrically, it may be any value 1f'ffi. Therefore, when the fixed scroll member 1 and the frame 5 are connected with bolts, for example, even if there is play between the bolt hole and the bolt, this play will be removed. There is no need to consider the effect on positioning accuracy.In fact, between pin 6 and ring 7, and between ring 7
It is desirable to have a slight clearance between the holder 2C and the crank pin 9b provided on the orbiting scroll member 2, and between the round hole 8 and the crank pin 9b. For this purpose (9), wet these plows with lubricating oil and do 1i!
! Before completely fixing the fixed scroll member 1 and frame 5, rotate the crank first and then fix it completely. In other words, make sure that there is no lubricating oil between them. Somewhere 9 is distributed with a uniform thickness,
Therefore, the unevenness of the gap can be reduced. Since the rotation prevention +a + jt is provided between the fully fixed one part and the orbiting scroll member in this way, the positioning of both scroll members can be easily and accurately performed without increasing the total number of processing steps.

5 and 6, a pin 6 is provided protruding from the frame 1, and a ring 7 that engages with the pin 6 with a slight clearance is inserted into a round hole 8 provided in the orbiting scroll member 2.
I like it a little! FIG. 1 is an analytical plan view of a main part 1 of an embodiment of a scroll fluid machine in which a scroll fluid machine is provided and fitted together. In the embodiment shown in FIG. 5, the round hole 8 is a through hole that can be easily machined and
'fCA can be set. In the embodiment shown in FIG. 6, the round hole 8 does not have a 1 r.m.f. It becomes possible. In particular, since lubricating oil is retained even when the machine is stopped, good oil lubrication is possible immediately upon restart.

εi% In Figures 7 to 10, the pin and ring are integrated, and this is connected to the fixed scroll member 1 and the orbiting scroll ↑? 1
≦It is a main part 119r side view of an embodiment of a scroll T-body machine in which materials 2 are disposed so as to fit together with a slight gap between them. In the embodiments shown in FIGS. 7 and 8, the ring 7 is arranged on the fixed scroll member side. In FIG. 7, the small hole 11 that meets the pin 6 with a slight clearance does not pass through the pin 6, so that the oil lubrication in this part can be improved. In FIG. 8, the small hole 11 is a through hole, which makes it easy to improve the machining accuracy.

In the embodiments shown in FIGS. 9 and 10, the ring 7 is placed on the orbiting scroll side. In FIG. 9, the round hole 8 is not penetrated, and this part can be completely lubricated with oil. 10th
In the figure, the round hole 8 is a through hole, and it is easy to improve the machining details IJf.

Fig. 11 shows an example of a scroll fluid machine in which a stepped cylinder 12 is completely round (11) whose central axis distance is equal to the orbiting radius 6 of the orbiting scroll member 2, and the hole 8 is fitted with a slight clearance. Main part n') R plane 1" can.

The embodiments shown in Figs. 5 to 11 are also the same as the embodiment shown in Figs. This positioning increases the total number of machining steps and can be easily and accurately performed.

In the embodiments shown in FIGS. 4 to 11, by providing an oil supply hole 1j in the prevention mechanism section at t'-1flu to supply oil, it is possible to improve 1d resistance to charring or abnormal wear. /In other words, crank the refueling path 1llllII9
, from inside the valley of the orbiting scroll member 2, to prevent
There are two methods, such as a method of guiding the fixed scroll member 1 to the +11t part, or a method of guiding it from the inside of the fixed scroll member 1 to prevent rotation (to a certain structural part.
Shown in Figure 3. Reference numeral 13 in each figure is the oil supply hole.

As explained above, according to the present invention, since the rotation prevention (12) and stop wall structure are arranged between the fixed and orbiting scroll members, the fixed scroll member can be easily and accurately positioned. There is.

However, as long as the anti-rotation mechanism is used as a means for positioning the fixed scroll member, the number of processing steps will not increase, and therefore the price will not increase.

A diagram explaining the principle of fluid machinery, Figure 2 is a conventional scroll lA
A sectional view of the main parts of the T-body machine, Figure 3 is II-II in Figure 2.
+IJ cross-sectional view shows the principle of the anti-rotation mechanism, 4 diagrams, 4th to 1st
FIG. 1 is a cross-sectional view of a main part showing an embodiment of the present invention, and FIGS. 12 and 13 are cross-sectional views of a main part of the embodiment showing a method of oil lubrication of an anti-rotation mechanism.

■...Fixed scroll f41') l'A, 2...
Orbiting scroll member, 6...pin, 7...ring,
8...Round hole, 11...Small hole, 12...Stepped cylinder,
13... Oil supply hole.

Agent Patent Attorney Toshiyuki Usuda (13) Figure 1, (long) Figure Z Figure 3 Shoulder 5 diagram Figure 2 Figure 7 Inn 3 map No. ? figure Figure 10 71 irises Figure 12 Figure 13

Claims (1)

[Scope of Claims] (1) An orbiting scroll member formed in an involute or a curved shape close to an involute and having a biased ramp and a fixed scroll part layer are joined so that the wraps of both are engaged with each other, and the fixed scroll member is joined to the fixed scroll member. t4f, in a scroll fluid machine which is provided with a suction boat and a discharge port 1-e and is interposed between an orbiting scroll member frame and a fixed scroll member, there is a gap between opposite end surfaces of the fixed scroll member and the orbiting scroll member. , either one of 4 is provided with a plurality of cylindrical pins protruding from it,
The other end face has the same number of round holes as the pins, and a ring with a cylindrical outer shape is inserted into this round hole with a slight gap. An eccentric hole is provided at a distance approximately equal to the turning radius of the material, and by making a slight groove between the eccentric hole and the pin and making them fit together, an anti-rotation mechanism is formed to prevent the rotating star scroll member from rotating. At the same time, the scroll θ1, which is characterized by maintaining airtightness in the radial direction of both thread roll wraps and driving and assisting the orbiting scroll member by a crank ('IM 4 M'), is attached to the body (d J ]+Q. 2. Integrate the ring and pin, pin k ll'l'l
>1ffi Scrolling part or orbiting scroll member and a slight gap are provided so that they can fit together and rotate, thereby preventing rotation/f k Scroll f described in paragraph 1
'J-Le Fluid Machine. 3. Fixed scroll) A plurality of round holes are provided in both end directions between the opposite end surfaces of the ltB material and the orbiting scroll layer, and two cylinders are integrated into the round hole. In stage f-J Enzumi, the distance between the centers 11111 of each cylinder is approximately equal to the orbiting radius of the orbiting scroll member? 1: Achieving the anti-rotation machine 4I' day ζ + 1 by creating a slight gap and fitting it together (r-characteristic'F-statement "Claim 1111")
χ Section 1) Former scroll fluid machine. 4. According to any one of claims 1 to 3, the oil lubrication of the anti-rotation mechanism is improved by guiding the sound of the oil supply hole to the 11 part of the anti-rotation machine 11'. scroll fluid machine. 5. φ'n 17J of the patent claim, which is characterized in that oil supply holes are provided inside the crankshaft and the orbiting scroll member.
Scroll fluid machine according to item 4. 6. The scroll fluid machine according to claim 4, characterized in that an oil supply hole is provided inside the fixed scroll wrap material.