JPS6158992A - Method of manufacturing scrol type compressor - Google Patents

Abstract

PURPOSE:To enhance the wear-resistance of stationary and dynamic blade sections of a scrol type compressor, and as well at aim at enhancing the efficiency of production and at reducing the cost thereof, by forming the stationary and dynamic blade sections by plastic-molding, and by embedding strengthing members made of wear- resistant metal, respectively in the front end face of a spiral plate in the stationary blade section and the end plate of the dynamic blade section. CONSTITUTION:A dynamic blade section 12 and a static blade section 14 are formed by plastic-molding, and insert members 23, 24 made of wear-resistant metal are embedded, respectively in the front the face of a spiral plate 22 in the stationary blade section 14 and the end plate 19 of the dynamic blade section 12 such that the members 23, 24 are opposed together and made in slidable contact with each other when both sections are fitted together. With this arrangement the scrol blades are made lightweight and increase their durability under high speed operation, and further, the wear- resistance thereof may be enhanced so that the lowering of the life of them due to abrasion may be avoided. Further, with the employment of a plastic-molding process the manufacturing of a scrol blade may be made by one step so that the efficiency of production may be remarkably enhanced and the cost thereof may be lowered to contribute the mass production thereof.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a compressor,! The present invention relates to a method of manufacturing a scroll fluid machine used for engraving machines and the like.

[Technical background of the invention and its problems]

To explain the operating principle of a scroll compressor using the vlB diagram, if two scrolls, or spiral plates (1) and +21, are arranged at different angles and interlocked with each other, then both scroll plates (1), (2) A limited space (3) extending from the contacting portion to the contacting portion is formed between them. now,
One spiral plate (1) is connected to the other spiral plate (2), and the center O' of one spiral plate (1) moves around the center O of the other spiral plate (2) with a radius of 0-O'. When the spiral plate (1) is moved while inhibiting rotation, the volume of the limited space (3) gradually decreases.

Figure 8 (B) shows that the revolution angle of the spiral plate (1) is 90° from the state shown in Figure 8 (on), and Figure (C1) shows that the revolution angle of the spiral plate (1) is 180°, 270°'f, The figure (D) shows that the volume of the space (3) thus limited gradually decreases.In (A) rotated by 360°, the rain spaces move to the center, connect with each other, and further expand. The same figure moved by 90 degrees (
B).

As shown in (C1, (DJ), the space is pinched and becomes almost invisible in the same figure (D). During this time, the outer space that started to open in the same figure (Bl) is shown in the same figure (c), (DI to (A ) and create a sealed space that takes in the fifi5 fluid.

Therefore, sealing side plates are provided at both ends in the axial direction of the spiral plates 11) and (2), and a side plate in the form of a circular cylindrical shape is provided at the center of one side plate as shown in (4) in Fig. 8. If a discharge hole is provided, the fluid taken in from the outside in the radial direction will be compressed and discharged from the discharge hole (4).

By the way, conventionally, the above-mentioned spiral plate (1), (
2) was obtained by cutting a cast material using a numerically controlled (NC) machine tool by J/Domill. However, the machining allowance from washed material is usually 1.5
1, which was quite large, which resulted in long manufacturing time and low production efficiency. Not only that, but tools wear out during cutting, making tool management extremely complicated to maintain a specified machining accuracy.Moreover, the machining accuracy that can be achieved is not sufficient, which is a barrier to improving the performance of scroll fluid machines. It had become.

Furthermore, since it is made of metal, the large centrifugal force that accompanies high-speed rotation causes significant wear, resulting in a shortened service life. There is a risk that abnormalities may occur during use due to this.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a scroll fluid machine that is both mysterious and wear-resistant.

[Summary of the invention]

The stationary blade section and the movable maple section that fits into the stationary wing section are made of plastic, and a reinforcing member is embedded therein to provide wear resistance.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a scroll fluid machine manufactured by the manufacturing method of this embodiment. This scroll fluid machine includes a shaft (7) coaxially supported by a frame (6) within a cylindrical container (51) and the container (5).
And this shaft (four rotors (8) installed in the middle of the force),
A stator (/'', c1-ta (8)) is fixedly installed in the 8th vessel (1u) to form a motor (9) together with the workpiece (tl) and drives the shaft (7) one rotation. 10) and a shaft (formed at the upper end of the force 1'), eccentrically fitted to the head (7a) and connected to the frame (6) via the θυ !#I part (1) is installed vertically on the ceiling of the container (5) and fits and slides into the movable part 1.3 to form a plurality of compression spaces tt31... while discharging to the center. Shizuoka part u4 where hole (14a) is drilled
), a suction pipe (15) provided on the side of the container (5) for supplying the fluid to the compression space (1), and a suction pipe (15) that supplies the fluid
5) is provided in the center of the ceiling of the container and is composed of a compression space (19) and a discharge pipe +15 for discharging the working fluid compressed in the container and discharged via the discharge hole (14a) to the outside. (5) Lubricating oil A7) is injected into the bottom, and this oil is supplied to the shaft portion through the oil groove U mark carved on the outer peripheral surface of the 4II (force). Yo(・ζ
It has become.

In addition, the moving maple part ([21 is a disc-shaped end plate IL1, and a spiral plate-1 which is integrally provided upright on the upper surface of the end plate and has a spiral shape made of an involute or an arc curve.
It is made up of. This working part is prevented from rotating by an Oldham joint 1111, and is provided so as to interlock with the revolution of the shoes. On the other hand, the stationary vane part I is provided integrally with a disc-shaped end plate (21) upright on the lower surface of this end plate (21), and the involute i;'c has a spiral shape made of an arcuate curve. Consists of a whorl plate (secretory gland).

Next, in the method for manufacturing the scroll fluid machine having the above configuration, as shown in Figure 2 (B),! FI) J rehe part I12 and static part 114) are molded with plastic.

This plastic molding method is compression molding method (Com
p-ression molding, transfer molding method (transcr molding).

An injection molding method (injection molding method, etc.) is applied.

In addition, as plastic materials, phenol, coria,
It is made of thermosetting plastics such as melamine, polyester, and epoxy, or thermoplastic glasstics such as polystyrene, polyethylene, polyglobylene, polyamide, and polycarbonate. Therefore, during plastic molding, a wear-resistant annular insert member (23), (241) made of, for example, bronze, wear-resistant cast iron, Pavit metal, etc. is inserted into the outer circumference. After molding, insert the VC so that the insert member (23) is flush with the outer local part of the end plate (19) of the end plate (19) of the moving tail portion (12) on the spiral plate (20) side. Stator blade section (14)
Insert the insert member (24) so that it is flush with the distal end surface of the outer peripheral portion of the spiral plate (22). Therefore, the stationary blade part (14) and the moving 11 blade part (12)
When they are fitted into each other, as shown in FIG. 3, they are set so as to face each other and come into sliding contact. At this time, the insert members (23) and (241) have protrusions (
25)... or formed in a reverse tapered shape as shown in FIG.

In this way, the method for manufacturing the scroll fluid machine of this embodiment is as follows! The 111I round part (12) and the stator blade part (14) are made of plastic molding, and the tip surface of the spiral plate (22) of the static R part (14) and the end plate (19) of the rotor blade part (12) are made of abrasion resistant material. Insert members (231, (24
) are embedded so that they face each other and come into sliding contact when they are fitted, which makes the scroll book (light) and increases its durability against high-speed rotation. Insert members (23) and (24) embedded in the
) improves abrasion resistance, thereby making it possible to alleviate the decrease in life due to abrasion. Furthermore, by adopting the glass molding method, it becomes possible to fabricate the scroll blade FCA in one process, which greatly improves production efficiency, and also reduces the production price to a great extent, making mass production possible.

In addition, in the above embodiment, in order to improve flatness after plastic molding, insert members (23),
(24) may be buried and the surface marked h- may be polished. In addition, the insert member is not annular as in the above embodiment, but a piece-shaped insert member (26) is used as shown in FIGS. 6(A) and 6(B). good. Furthermore, as shown in Figure 7,
Powder (27) made of a wear-resistant metal may be mixed into the plastic.

In this case, the powder (27) is mixed into the plastic raw material before plastic molding. Furthermore, the insert member embedding portion may be buried only in the outer circumferential portion of the scroll blade (and is not limited to this, but may be buried throughout the sliding contact portion.Furthermore, the insert member (23)
, (24), (26)... and powder (27)
...The closure may be made of fine ceramics such as Si3N4 (silicon nitride 1.cBN (cubic boron nitride)) instead of metal.

〔Effect of the invention〕

According to the present invention, it is possible to reduce the weight of the scroll blade, and the durability against high-speed rotation is increased. Furthermore, since a wear-resistant member is provided at the sliding contact portion, wear resistance is also improved. Furthermore, by adopting a plastic molding method, we are able to manufacture the Soufloaf in one step, which improves production efficiency! In addition to moving toward M, the production price also becomes extremely low, making mass production possible.

4 Explanation of the drawings: Figure 1 shows a scroll fluid machine according to an embodiment of the present invention.
Search method (The overall configuration of the scroll fluid machine 1 command obtained from this) 1. Figure 2 (B) is a perspective view of the rotor blade and stationary blade in Figure 1, and Figure 3 is a perspective view of the moving blade and stationary blade in Figure 1. 4 and 5 are enlarged sectional views of the main parts of FIG. 3, and FIG. Figure 8 (A), ω), (C
) and (D) are diagrams showing the operating principle of a scroll compressor.

(12)... Moving blade section, (14)... Stationary section.

(19)... End plate (second -), (201... Spiral plate (second -).

(21)... End plate (first -1, (22)... Spiral plate (first -).

(23), (24), (261... insert member, (27)... powder.

Agent: Patent Attorney Noriyuki Chika (1 other person) Figure 1 fJS2 diagram Figure 3 q Figure 6

Claims (3)

[Claims] (1) A stationary vane section that is fixedly provided and includes a flat first end plate and a spiral first spiral plate that projects from the first end plate, and a flat second end. and a rotor blade portion which is formed of a second spiral plate projecting from the second end plate and fitted into the first spiral plate, and is driven to revolve around the stationary blade portion. In a method of manufacturing a scroll fluid machine, a method of plastic molding the stationary blade portion and the rotor blade portion;
A method for manufacturing a scroll fluid machine, comprising the step of embedding a reinforcing member in at least a sliding contact area between the stationary blade section and the rotor blade section. (2) The method for manufacturing a scroll fluid machine according to claim 1, wherein the reinforcing member is an insert material inserted during plastic molding. (3) The method for manufacturing a scroll fluid machine according to claim 1, wherein the reinforcing member is a powder.