CN1350619A

CN1350619A - Side channel machine

Info

Publication number: CN1350619A
Application number: CN00807428A
Authority: CN
Inventors: 马里奥·肯普夫; 沃尔特·鲍迈斯特
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1999-05-11
Filing date: 2000-05-02
Publication date: 2002-05-22
Also published as: KR20020008183A; JP2002544428A; WO2000068577A1; DE19921765A1; EP1177384A1

Abstract

The aim of the invention is to improve the efficiency of a side channel machine which, at the same time, is easier to produce and assemble. A side channel machine with at least one running wheel (4) that is rotationally mounted in the housing (1, 2) thereof is provided. The running wheel is provided with a supporting ring (5). Conveying blades are mounted on the supporting ring which rises above a hub component at least on a side axial in relation to the running wheel axle, whereby the hub component carries the supporting ring and links the supporting ring to a primary shaft. There is a gap (3) between the running wheel (4) and the housing (1, 2). At least one contour (7) that forms edges is provided at least in the area of the supporting ring (5). Said contour (7) serves for sealing the gap (3) and is incorporated into the housing and/or the supporting ring (5).

Description

Side channel machine

The present invention relates to a kind of side channel machine.

By Germany Patent document DE-A 22 44 933 known a kind of lateral path compressors, sealing strip embeds the annular groove the inside that is positioned at housing in this lateral path compressor, and sealing strip leans on the filler ring end face and extends.This sealing strip in annular groove the inside location like this, make the as far as possible little slit of generation between filler ring end face and the band edge outstanding by annular groove.Can make so-called slot leakage few as much as possible thus.But shortcoming is that the processing of this seal arrangement is required great effort very much.Wherein narrow slit obviously is inconvenient with the sealing strip levelling in order to obtain evenly.Junction point at sealing strip and filler ring on the circumferencial direction of lateral path compressor leaves the slit, and this slit can further cause the pressure loss.

By the known a kind of lateral path compressor of European patent document EP 0 708 248 A2, it has a seal ring that radially extends on the inner circumference of the axial projection of filler ring, the sealing ring leans to lean on the part that filler ring is axially given prominence to and by a retaining ring and keeps compressing on the surface of contact of lateral path compressor housing.But its shortcoming is to process and a lot of parts of needs in order to realize that this seal arrangement will be required great effort.

Therefore the objective of the invention is to design like this side channel machine, make it the efficient that better sealing is arranged and improve side channel machine thus under the situation of less assembling and processing charges.

Purpose of the present invention realizes therefrom, promptly, side channel machine has at least one and can be rotatably set in impeller in the housing, this impeller has the filler ring that has conveying blade, this filler ring exceeds a wheelboss part that props up retainer ring and be connected with live axle in an axial side of impeller at least, wherein, at least the slit of the existence of the filler ring place between impeller and housing has the profile that at least one is made of seamed edge, this profile is used to seal this slit, at this, profile processes on housing and/or filler ring.

By at the place, slit this profile being set, provide a kind of effective and long-time stable seal arrangement according to the present invention.Its advantage is to make this seal arrangement and need not to adopt, fix and install optional feature.Therefore reduce installation time and reduced the warehouse keeping expense of this seal arrangement.The experimental result that obtains at the side channel machine run duration is, although operation will cause the heating of side channel machine parts, and especially filler ring and housing heating, gap sealing is almost temperature independent.Because especially when filler ring is made with same material with case material, have identical expansion coefficient, therefore with side channel machine working time irrelevant sealing system can guarantee that at the side channel machine run duration it has long-time stable characteristics curve.Therefore almost got rid of with increasing the side channel machine changing operate-point of not expected that occurs working time, because between the parts that constitute seal arrangement, do not produce rubbing action.

In order to obtain gap sealing efficiently, profilogram extends on the circumferencial direction of side channel machine basically.

More advantageously, the profile trend is rectangle, trapezoidal and/or triangle.In addition, the shape of profile depends on selected processing method, the medium of being carried and depends on housing and/or the material of filler ring.

Have among the embodiment of advantage at another, this has a stepped shaft trend profile in housing or on filler ring.

Profile on housing and/or the filler ring relatively is advantageously located at those and processes especially easily, just can realize and best place of embodying seal action with less expense.

Describe the present invention in detail by the accompanying drawing illustrated embodiment below and have the dependent claims feature the present invention other have the expansion structure of advantage.In the accompanying drawing:

Fig. 1 is a kind of local longitudinal sectional view of double flow channel side channel machine,

Fig. 2 to Figure 10 is the amplification sectional view of the seal arrangement of this double flow channel side channel machine at X and Y place.

The housing of the double flow channel side channel machine among Fig. 1 mainly is made of two and half housings 1,2.Half housing 1,2 surrounds impeller 4, and this impeller is arranged on the live axle that is not shown specifically among the figure.This impeller 4 has filler ring 5 on its excircle, the conveying blade 6 of impeller 4 is set on filler ring.Filler ring 5 be arranged on one be inlaid on the live axle and antitorque commentariess on classics on the wheel hub that be connected with live axle, that be not shown specifically.Cause slot leakage and need be in operation effective slit 3 that seals between filler ring 5 and half housing 1 or 2.Have a recessed turning (Eckaussparung) X on each end face of filler ring 5, Y relatively is advantageously located at the inside, recessed turning along the filler ring of circumferencial direction extension and/or the profile of housing.Profile in this inside, recessed turning comes out by turning or Milling Process especially easily.

Fig. 2 to Fig. 6 illustrates this various possibilities that have the profile 7 of rectangle trend basically.Profile 7 also can be triangle or trapezoidal trend.The combination in any of these profiles 7 equally also is fine.But importantly, seamed edge forms in 3 places, slit, to produce the labyrinth sealing effect.The seamed edge chamfering radius of profile of the present invention is approximately 0.5mm or littler in addition, at this, seamed edge more " sharply " just can produce better relatively seal action.

Fig. 7 and Fig. 8 illustrate the profile 7 of stepped shaft setting in principle, and profile is that the profile trend that the repetition front has existed is also strengthened the labyrinth sealed effect thus basically.

Fig. 9 and Figure 10 illustrate the other contour structure, they and the same same sealing as slit 3 of foregoing profile trend.

By the formation of profile 7 on filler ring 5 and/or half housing 1,2, significantly simplify the assembling of this lateral path compressor.

Structure among Fig. 3 and Fig. 5 is particularly useful for housing and filler ring 5 is the situation of different materials, because under the situation of different expansion coefficient (especially η housing＜η filler ring), inside based on full of twists and turns slit 3 is quiet wide, half housing 1 can not take place when being convenient side channel machine long-play yet, 2 with the rubbing contact of filler ring 5, but still can guarantee the labyrinth sealing effect simultaneously.

During assembling or maintenance work, needn't in slit 3, embed and fixing additional seal element.Because half housing 1,2 almost is consistent with filler ring 5 material coefficient of thermal expansion coefficients, so also can produce very enough seal actions at the side channel machine run duration.Therefore when material was identical, expansion coefficient was identical and produce the seal action that improves more.

Even if therefore also can guarantee the stable operation characteristic curve of side channel machine after the time than long running in process.

Claims

1. side channel machine, it has at least one and can be rotatably set in housing (1,2) impeller of lining (4), this impeller has the filler ring (5) that conveying blade is housed, this filler ring exceeds a wheelboss part that props up retainer ring and be connected with live axle in an axial side of impeller at least, wherein, at least at impeller (4) and housing (1,2) slit (3) that the filler ring between (5) is located to exist has at least one profile that is made of seamed edge (7), this profile is used to seal this slit (3), at this, this profile processes on housing and/or filler ring (5).

2. side channel machine as claimed in claim 1 is characterized in that, the trend of described profile (7) is extended on the peripheral direction of side channel machine basically.

3. side channel machine as claimed in claim 2 is characterized in that, the profile that extends on peripheral direction (7) curve occupies the part of side channel machine periphery at least.

4. as the described side channel machine of above-mentioned each claim, it is characterized in that rectangular at least and/or the trapezoidal and/or triangle trend of this profile (7).

5. as the described side channel machine of above-mentioned each claim, it is characterized in that this profile (7) is stepped shaft basically and extends.

6. as the described side channel machine of above-mentioned each claim, it is characterized in that this profile (7) especially forms in the section start and/or the termination place in slit (3).