CN2168101Y

CN2168101Y - Vortex disk structure

Info

Publication number: CN2168101Y
Application number: CN 93219175
Authority: CN
Inventors: 徐博; 乔宗亮; 熊则男
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 1993-07-16
Filing date: 1993-07-16
Publication date: 1994-06-08
Anticipated expiration: 2003-07-16

Abstract

The utility model provides a new vortex disk structure in the technical field of vortex compressors. The central parts of a traditional vortex disk and a fixed vortex disk are respectively processed with grooves to quickly increase the area of a through flow passage from a compression chamber to a central air exhausting chamber at the beginning of air exhaust and reduce the flow loss resulted by too much small flow area. Simultaneously, air exhausting flow passages are partially changed to reduce the flow loss because the vortex wall of the movable vortex disk moves at the front of an air exhausting port and disturbs a flow field. Thereby, the efficiency of vortex compressors is improved.

Description

Vortex disk structure

The utility model belongs to the scroll compressor technical field.

In scroll compressor, when traditional scroll structure is communicated with at its exhaust starting stage, compression chamber and center cavity, the dynamic and static scroll laws of motion that are meshing with each other have determined by compression chamber very for a short time to the circulation area of central row air cavity, and circulation area increases slowly, and element volume reduces soon.Therefore, fluid is subjected to serious throttling inhibition when flowing through this passage, and flow velocity increases and forms strong vortex in the vortex ring tip region, has caused serious flow losses.In addition, movable orbiting scroll vortex wall tip part keeps off before vent ports, and interference flowing field distributes, and has also increased loss.

The purpose of this utility model is by reducing flow losses in the scroll center region of scroll compressor machined grooves, thereby improves the efficient of scroll compressor.

The utility model is achieved in that in quiet whirlpool dish and movable orbiting scroll center region difference machined grooves, the Flow area that is communicated with from compression chamber to the central row air cavity when beginning with quick increase exhaust, the flow losses that minimizing causes because of Flow area is too small, the simultaneously local grate flow channel that changes reduces the flow losses that the interference because of the mobile stream field of movable orbiting scroll vortex wall before vent ports causes.The design fibrous root of groove is determined according to the working procedure of scroll compressor.The projection that groove location is quiet when movable orbiting scroll goes to the exhaust angle in engagement process, that moving vortex circle molded lines (the outer molded lines that comprises corresponding vortex ring) is surrounded center cavity zone on bottom surface separately rings in the zone, and groove will have certain depth.

Fig. 1 is the plan view of quiet whirlpool dish 1.

Fig. 2 is the sectional view of quiet whirlpool dish 1.

Fig. 3 is the plan view of movable orbiting scroll 2.

Fig. 4 is the sectional view of movable orbiting scroll 2.

Fig. 5 is that compression ends, be about to begin exhaust instantaneous, be movable orbiting scroll 2 when in engagement process, going to position, exhaust angle, quiet, movable orbiting scroll position schematic transverse sectional view.

Fig. 6 is the axial sectional view of Fig. 5.

Fig. 7 is dish 2 relative Fig. 5 positions in whirlpool when turning over an angle slightly again, quiet, the movable orbiting scroll position of the work that is meshed and the transverse sectional view that flows and illustrate.

Fig. 8 is the axial sectional view of Fig. 7.

Fig. 9 is the vortex wall tip part retaining of movable orbiting scroll 2 before vent ports the time, the transverse sectional view of the relative position of quiet whirlpool dish 1 and movable orbiting scroll 2 and the signal of flowing.

Figure 10 is the axial sectional view of Fig. 9.

Figure 11 simplifies the groove schematic representation.

Groove 3 shown in Figure 1 It is vortex ring end molded lines in the dish 1 of quiet whirlpool; Be an involute, the outer wrap profile in the end of it and movable orbiting scroll 2 is the projection line coincidence on the bottom surface of quiet whirlpool dish 1 when movable orbiting scroll 2 goes to position, exhaust angle.AC is a straightway, and it is the elongation line of B, C line.In the outer contour of the groove 4 shown in Fig. 3, It is wrap profile in the end of movable orbiting scroll 2;

Be an involute, the projection of outer wrap profile on the bottom surface of movable orbiting scroll 2 of the quiet whirlpool dish 1 when it and movable orbiting scroll 2 go to the exhaust angle overlaps.A ' C ' is a straightway, and it is the elongation line of B ', C ' line.The degree of depth of groove 3 and groove 4 is 1mm-3mm.For ease of processing, groove also can be processed as cylindrical shape as shown in Figure 11.Its diameter Requirement makes cylindrical approaching as far as possible as preceding definite groove outer contour, but can not surpass its border, and its degree of depth h also is 1mm-3mm.

By machined grooves, making flows improves.At movable orbiting scroll when position, exhaust angle turns over an angle more slightly, from accompanying drawing 7, accompanying drawing 8 as can be seen, after improving structure, connected surface increases rapidly, and flowing has also increased the passage shown in the arrow in the accompanying drawing 8 crawlway shown in the arrow in accompanying drawing 7, when the vortex wall tip part of movable orbiting scroll 2 keeps off in vent ports, from accompanying drawing 9, accompanying drawing 10 as can be seen, increased and passed through flowing of groove, can extenuate of the influence of moving spirotheca end flowing.

Groove on quiet, the movable orbiting scroll also can be processed as other shape, and the groove of quiet movable orbiting scroll can be different, but they all must as preceding definite zone in.

In scroll compressor, adopt the utility model can reduce discharge flow resistance, thereby improve compressor efficiency.Simultaneously, can extenuate, further reduce the moment of torsion in the past exhaust process, strengthen the stationarity of compressor operation, thereby reduce the electromagnetic noise of motor and the air pocket noise that air-flow causes because of flow resistance causes excessive overcompression.

Claims

1, a kind of structure of scroll is characterized in that: in the center region machined grooves (3) of quiet whirlpool dish (1), in the center region machined grooves (4) of movable orbiting scroll (2).

2, scroll as claimed in claim 1 is characterized in that: when position movable orbiting scroll in engagement process of groove (3) and groove (4) went to the exhaust angle, the center cavity zone quiet, that the moving vortex circle molded lines is surrounded was in the view field on the bottom surface separately.

3, scroll as claimed in claim 1 is characterized in that: groove (3) and groove (4) can be designed to involute shape, also can be designed to cylindrical or other shape, and the groove (4) of groove (3) can be designed in same shape.

4, scroll as claimed in claim 1 is characterized in that: the degree of depth of groove (3) and groove (4) is 1 millimeter to 3 millimeters.