JPS5937289A - Scroll compressor - Google Patents

Abstract

PURPOSE:To shorten a working time for finishing an end plate by a constitution wherein the surface of the end plate, which is located from the end face where the spiral wrap of a rotating scroll is ending to the terminal end of an imaginary curve of wrap extended from said end face, is made so as not to be contacting with the opposing surface of a fixed scroll. CONSTITUTION:The end plate surface 20, from the end face 21 of the spiral wrap 2b of the rotating scroll 2 to the terminal end 23 of the imaginary curve of the wrap, extended further from the end face 21, is constituted so as not to contact with the surface 23 of the fixed scroll 1, which is opposing to said end plate surface 20. The end plate surface 20 of said rotating scroll 2 and the part 23 of the fuxed scroll 1, which is opposing to the end plate surface 20, is not contacting with each other, therefore, the material itself or the roughly finished material may be employed and the working time for finishing the end plate may be shortened remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scroll member for a scroll compressor.

Conventionally, an orbiting scroll and a fixed scroll, each formed with a thinly wound wrap standing upright on an end plate, are meshed with each other with their ships facing inward, and the orbiting scroll and a drive shaft are connected to produce an orbiting motion. In such a scroll compressor, the end plate surfaces of both the fixed scroll and the orbiting scroll are finished into a flat shape, and the end plates come into orbital contact with each other. Therefore, the present invention has been made in view of the above points, and has the disadvantage that processing time is required because the end plate surface, which is not directly required for the compression action, is also finished. It is an object of the present invention to provide a scroll compressor having a scroll member that can be used.

In order to achieve the above object, the present invention provides an end plate surface from the winding end surface of the thinly wound wrap of the orbiting scroll to the end of the virtual rack "curve" (during the orbiting motion, the surface facing the fixed scroll). It has a feature that prevents contact.

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIGS. 1 to 5.

Reference numeral 1 denotes a fixed scroll with a thinly wound wrap 1b standing upright on an end plate 1a, and 2 an orbiting scroll with a wrap 2b standing upright on an end plate 2a.

Both scrolls are engaged with each other with their laps inside, and the orbiting scroll 2 is connected to a drive shaft 3. The drive shaft 3 is rotatably supported via a bearing 4, and a frame 5 to which the bearing 4 is attached is fitted into a closed container 6. 7 is a discharge hole, 8 is a discharge pipe, and 9 is a suction pipe.

Reference numeral 10 denotes a stator of the motor, which is fixed to the sealed container 6. A rotor 11 is fixed to the drive shaft 3. 12 is an oil reservoir in which the lower end oil supply device 13 of the drive shaft 3 is immersed. Numeral 14 is an oil supply hole through which oil is supplied to the bearing 4 and the bearing 15 of the orbiting scroll 2. 16Fi balance weight 17 is an anti-rotation device, which is installed between the orbiting scroll 2 and the frame 5. Reference numeral 20 denotes an end plate surface from the end surface 21 of the thinly wound wrap 2b of the orbiting scroll 2 to the end 22 of a further extended virtual wrap curve. The end plate surface 20 is a part in the raw state or in a finished state. Reference numeral 23 denotes a portion corresponding to the end plate surface 20 of the orbiting scroll 2, which covers the entire locus of the end plate surface 20 that moves due to the orbiting motion of the orbiting scroll, and this range is not related to the compression action. This is the part that does not come into contact with the orbiting scroll. The state of this trajectory is shown in Figure 4 (
It changes as shown in al~4. Figure 4 (al is a state diagram assuming that the center position of the orbiting scroll is 0°, and the winding end υ
This is a state in which the virtual wrap curve from the ^ plane 21 to the terminal end 22 is located at the outermost position. In addition, Fig. 4 (b) is a state diagram after turning 90° from (al), and Fig. 4 TCI is a state diagram further rotated by 180°.
FIG. 4 shows a state in which it has been turned (dl is a state in which it has been turned by an additional 270 degrees. Since the above-mentioned end plate surface 20 and the corresponding portion 23 of the fixed scroll do not come into contact with each other, the material or lid finish remains unchanged. However, as shown in FIG. 5, for example, if the end plate surface 20 is left in a convex shape in the raw material or in the finished state of the lid, the fixed scroll side is formed into a concave part like a part 23. Since it is sufficient that the orbiting scroll and the identification scroll do not come into contact with each other, as another example, the orbiting scroll side may be formed into a recessed portion, and the fixed scroll side may be processed to be flat.

Since the present invention is constructed as described above, the time required for finishing the end plate can be shortened.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the scroll compressor of the present invention, Fig. 2 is a plan view of the orbiting scroll, Fig. 3 is a plan view of the fixed scroll, Fig. 4 (numbers 81 to 81 is a state diagram during the orbiting movement, Fig. 5 is a plan view of the orbiting scroll, The figure is a sectional view taken along the line A-A in Fig. 4. 1... Fixed scroll 2... Orbiting scroll 3
...Drive shaft 4...Bearing 5...Frame 6
...Airtight container 7...Discharge hole 8...Discharge piping 9...Suction piping 10...Stator 11...
Rotor 12...Oil sump 13...Oil supply device 14
... Oil supply hole 15 ... Bearing 16 ... Balance weight 17 ... Autorotation prevention device 20 ... End plate surface 21 ... Winding end end surface 22 ... Termination end 2
3... Partial star 1 circle 2 corresponding to end plate surface 20 22) Fungus

Claims (1)

[Claims] 1. An orbiting scroll having a thinly wound wrap standing upright on an end plate and a fixed scroll are engaged with each other with the wraps facing inward, and the orbiting scroll and a drive shaft are connected to rotate. In a scroll compressor that is made to move,
A scroll compressor characterized in that the end plate surface from the winding end surface of the spiral wrap of the orbiting scroll to the terminal end of a further extended virtual wrap curve does not come into contact with the opposing surface of the fixed scroll during the orbiting movement. 2. A patent in which the end plate surface from the winding end face to the end of the virtual wrap curve further extended is left in the form of a protrusion in the raw material or in the lid finished state, and the fixed scroll facing surface of the protrusion part is formed into four parts. A scroll compressor according to claim 1. 3. The scroll compressor according to claim 1, wherein the end plate surface from the winding end surface to the end of the virtual wrap curve further extended is formed into a concave portion.