Summary of the invention
From above-mentioned prior art, task of the present invention provides a kind of lateral path compressor, and it compared with prior art can need not the diversity that bigger additional processing charges can obtain to use.
In order to realize above-mentioned task, has the described feature of claim 1 according to lateral path compressor of the present invention.
The impeller housing of this novel lateral path compressor is provided with the passage of a perforation, and this passage is along the opposite side that axially extends to shell from shell one side.Because passage is in impeller housing inside, so it does not increase shell sizes.It can be used for a variety of purposes, and what wherein for example can expect is to make a kind of fluid stream irrespectively axially pass shell with gas or the air stream carried by lateral path compressor.For example can pass impeller housing, so that distribute the heat of compression of generation with a kind of cooling medium of this passage water conservancy diversion.For this reason preferably, passage is arranged on the position between air supplying tube and the air discharge tube, i.e. so-called interruptions between these two pipes.
In the multistage design of side canal blower, have at least two impeller housings that axially link to each other, wherein each comprises oneself a impeller, and the passage of the impeller housing that axially is arranged side by side is interconnected to a common axial passage that passes impeller housing.This passage allows compressed gas or compressed air to reflux by shell.Necessary gas or air diverts simply mode realize that by assembling deflection mechanism on an impeller housing air discharge tube gas or the air communication of this deflection mechanism and this impeller housing perhaps in a word are in fluid and are communicated with.By the respective design of deflection mechanism, also can design a plurality of compressor stages and for example be connected front and back.This passage also can be divided into the branched bottom that longitudinally is parallel to each other by midfeather, if this is necessary to application target.
Simple especially structure situation is that impeller housing is two half-shells, and wherein this two shells, half shell same form has the air intake pipe of a moulding and the air discharge tube of a moulding respectively.In this case, in each in two shell half shells an axial passage part is arranged all, in being assembled into two shell half shells of impeller housing, axially the passage that connects is made up of the interconnective channel part of two sealings.Because it is identical that shell half shell also can all be designed in the multistage design proposal, the connectivity scenario with being used for compressed gas or compressed air that then is used for gas inlet flow or air inlet flow in the impeller housing both sides is identical.The unemployed air of shell half shell enters pipe and/or the air discharge tube seals by ending part.
Other design proposals according to lateral path compressor of the present invention are themes of dependent claims.
A kind of embodiment of theme of the present invention shown in the drawings.
The lateral path compressor shown in Fig. 1 and 2 have one basically the annular impeller housing 1, this impeller housing forms by two identical shells, half shell 2 and surround one in Fig. 4 with 3 signs impellers.Impeller 3 is driven by a motor 4, this motor a side coaxially flange be connected on the impeller housing 1.Two shells, half shell 2 that constitutes impeller housing 1 is identical.Each shell half shell 2 has a side canal 5 that holds impeller, and this side canal extends on the major part of circumference and the air intake pipe 6 of a moulding is connected with the air discharge tube 7 of a moulding.Between air intake pipe 6 and air discharge tube 7, be provided with one by part 8, as lateral path compressor itself is known.Air intake pipe 6 and air discharge tube 7 are in a common housing parts 9, and this housing parts is one-body molded on shell half shell 3, and there are flat a fitting surface 11 or a 11a perpendicular to 10 extensions of impeller axis in both sides.In this housing parts 9, between air intake pipe 6 and air discharge tube 7 penetrating via 12, this penetrating via extends on the whole axial length of shell half shell 2, and leads to two relative and parallel fitting surfaces 11,11a.Penetrating via 12 is arranged in by the position of part 8, is not communicated with side canal 5.
Side canal 5 ring-types of part annular are extended around a dish type hub member 13 of shell half shell 2, the bearing housing 14 that a center is arranged on this hub member, this bearing housing is used to hold a rolling bearing 16, and this rolling bearing is used to support axle 10 (referring to Fig. 4) of impeller 3.Rolling bearing 16 is by 17 pairs of outer closures of a bearing cap of tightening.Bearing housing 14 spaced radials are surrounded by the flange ring 19 of the substantially cylindrical of a tubulose apart from ground, this flange ring has a flat fitting surface 20 on its exterior edge face, this fitting surface is parallel to the fitting surface 11 on the housing parts 9 and is positioned at a common plane with this fitting surface 11.Be connected motor 4 at impeller housing 1 shell half shell 2 with coaxial flange ring 19 upper flanges of impeller axis 100, as shown in Figure 4, and in the cover cap 21 of on the impeller housing outside relative with motor 4, screwing on the flange ring 19 of corresponding shell half shell 2, these cover cap relative engagement face 20 sealings.
With housing parts 9 diameter opposite sides support block 22 of moulding on shell half shell 2, this support block is between two cooling ribses 23, this cooling ribs is for example pressed Fig. 1, mode shown in 4 is surrounded the shell half shell part that comprises side canal 5 outside.Support block 22 axially slightly stretches out cooling ribs 23, in its outside a flat fitting surface 24 is arranged, and the fitting surface 11 of this fitting surface and housing parts 9 and the fitting surface 20 of flange ring 19 are positioned at same plane.
A flange 18 that is positioned on shell half shell 2 outward edges has a flat plane 25 in its side that deviates from flange ring 19, and this plane is perpendicular to impeller axis 100, is positioned at a plane with the corresponding fitting surface 11 of housing parts 9.At the position of fitting surface 25, the circular groove 26 that edge of design opens wide in flange 18, this circular groove has L shaped cross section and is limited by two faces, and one of them face is perpendicular to impeller axis 100, and another face is parallel to impeller axis 100.Under the state that assembles, two shells, half shell 2 of impeller housing 1 with its fitting surface 25 mutually against, thereby two circular grooves 26 have continued the passage 27 along extending circumferentially, this passage has the cross section of rectangle.The ring 28 of the dimensionally stable of a close-fitting unification sealing in passage 27, this ring makes two shells, half shell, 2 mutual centerings.
Encircle 28 made of aluminumly or, and apply, thereby play the effect of seal ring with sealing material especially teflon for example by steel, brass or also can be made of plastics.At the position of air intake pipe 6 and air discharge tube 7, ring 28 has the ear handle parts around corresponding pore, indicates air intake pipe 6 with 29 in Fig. 5.
Two shell half shells 2 by ring-type around the bolt axis of circumference uniform distribution to compressing mutually, bolt is not shown specifically in the drawings, it passes the corresponding axial bore 30 that gets out on flange 18 and the housing parts 9.In the illustrated embodiment, ring 28 also is provided with hole 30.Shell half shell 2 that axially compresses mutually for impeller housing 1, as mentioned above, shell half shell compresses mutually with its fitting surface 25 and by ring 28 radial alignment, wherein encircles the effect that sealing impeller housing 1 is played at the 28 parting surface positions of extending perpendicular to impeller axis 10 simultaneously between two shell half shells.This seal action is very useful, because the impacting force that is produced by the bolt in the axial load hole 30 is directly delivered on the ring 28.
A single-stage lateral path compressor has been shown among Fig. 1 and 2, this compressor has only an impeller housing 1 that is assembled by two identical shells, half shell 2, and Figure 4 and 5 show a kind of two-stage mode of execution, two identical impeller housings 1 wherein, 1a axially links to each other, and wherein each impeller housing surrounds oneself a impeller 3.Especially can be as can be seen from Figure 4, impeller housing 1, adjacent shells half shell 2 of 1a abuts in fully together with its fitting surface 11,20 and 24 that is positioned at same plane and axially compresses mutually by tie rod 31.In addition, this two shells, half shell 2 encircles 32 radial alignment by one with the coaxial steel centering inside of impeller axis 10.The cross section that centering is embedded on flange ring 19 inboards with encircling the connection of 32 form fit is in the bore hole L shaped, that the edge opens wide.This centering ring is seamlessly packed under pre-tensioned situation, thus with fitting surface 11,20,24 make two impeller housings 1 together, accurate centering of 1a and impeller shaft 10 accurate vertical orientations relatively.Impeller shaft 10 passes two impeller housings 1 side by side, and 1a support two impellers 3, and motor 4 flanges is connected to half shell 2 of shell outside of impeller housing 1a, and the flange ring outside 19 of another gear mechanism housing 1 is by cover cap 21 sealings.
Fig. 4 also shows impeller shaft 10 and only is bearing in the rolling bearing 16 in impeller side, and this rolling bearing is arranged in corresponding shell half shell 2 of impeller housing 1 in the side in the face of motor 4.The second bearing support position of impeller shaft 10 is made of a rolling bearing 35 in the bearing cap 34 of motor 4.
With Fig. 4, the lateral path compressor of the two-stage form shown in 5 is similar, also such mode of execution can be arranged, wherein in the corresponding way axially mutually flange connect a plurality of impeller housings 1,1a makes lateral path compressor have compressor stage more than two.In all these multistage lateral path compressors, the penetrating via 12 alignment sealing mutually of each shell half shell 2 is connected together mutually with the butt form, thereby produces an axial passage (referring to Fig. 4) that runs through on the whole axial length of compressor.The deflector 36 of end assembling makes the air discharge tube 7 of a compressor stage be connected with the air intake pipe 6 of a compressor stage subsequently, thus the application scheme of the axial passage that generation runs through.Another kind of application scheme is that freezing mixture passes through the passage water conservancy diversion, to distribute the heat of compression of generation.In addition, there is not the penetrating via 12 that utilizes in this case by cover cap 37 sealings (Fig. 1,5) on shell half shell 2 that is installed in impeller housing 1 outside.
Cover cap 37 has two cover members 38, the air discharge tube 7 that it is sealed shut the air intake pipe 6 that does not utilize on this shell half shell 2 and does not utilize equally.Simultaneously, two of moulding are used for the leg 39 of lateral path compressor on cover cap 37, and these two legs have a flat placed side 40 and are used for the hole 41 of clamping bolt.
Be connected two silencing apparatuss 42 on the air intake pipe 6 that is screwed in relative shell half shell 2 together with motor 4 and air discharge tube 7, this silencing apparatus has the adpting flange 43 (referring to Fig. 3) that is used for air intake pipe or discharge tube at its free end.Between each silencing apparatus 42 of corresponding shell half shell 2 and housing parts 9 an independent foot 44 (Fig. 1,2) is set, this foot is installed on the tubulose extension 45 of corresponding silencing apparatus 42 and 9 precompressed of opposite shell part.Foot 44 has a placed side 40 equally and is used for the upright opening 41 of clamping bolt.Tubulose extension 45 for example is provided with outside thread, is screwed in the internal thread of respective tube 6,7.
Because all shell half shells 2 are all identical, shell half shell 2 that lays respectively in single-stage or multistage lateral path compressor form of implementation axially outside has air intake pipe identical on the structure 6 and air discharge tube 7, therefore silencing apparatus 42 and the cover cap 37 that has foot 44 also can exchange, in other words, silencing apparatus 42 is as Fig. 1, be positioned at the right side of impeller housing 1 shown in 2, this special lateral path compressor installation situation is more favourable.Certainly, the air guide element that other can also be arranged without silencing apparatus 42 and/or except silencing apparatus 44 connecting tube or connect the known component of flexible pipe, valve, bend pipe or the like itself for example.
In illustrated embodiment, two shell that constitutes an impeller housing 1 or 1a respectively half shells 2 are by outside ring 28 mutual centerings radially, also the inboard that ring 28 can be arranged on shell half shell 2 is in other words at the position of side canal 5, thereby obtain and two impeller housings 1 the similar arrangement structure in the centering ring 32 between the 1a.It should be noted that for this reason centering ring 32 also can radially be provided with outside, in other words corresponding to ring 28.
As mentioned above, at shell half shell 2 that aforesaid lateral path compressor has same form, it is assembled into an impeller housing 1 respectively, 1a is wherein as Fig. 4, shown in 5, also can axial flange connect a plurality of impeller housings 1,1a is so that provide a kind of lateral path compressor of multistage.But the invention is not restricted to this lateral path compressor mode of execution.Connect impeller housing 1 vertically, the passage 12 of 1a can be provided with in other forms of lateral path compressor in an identical manner.It also can have bindiny mechanism at corresponding impeller outer shell-side, and for example center screw thread or flange etc. are used for the fluid importing and derive.
Vertical passage 12 also is divided into the branched bottom of parallel to an axis by the partition wall 120 of at least one moulding in each bearing cap 2, as among Fig. 5 to shown in shell half shell 2 with dashed lines.Therefore can make a plurality of separated be that reverse fluid stream passes corresponding impeller housing 1,1a sometimes.
Also have a kind of like this scheme at last, shell half shell 2 be designed in shell half shell itself air intake pipe or air discharge tube 6 or 7 with vertical passage 12 between exist and be connected.A kind of like this design example is being aspirated side or the parallel connection of pressure side as the compressor stage that can make the multistage lateral path compressor by the passage 12 that axially connects.
At last, irrelevant according to design of the present invention and the form of medium of carrying by corresponding lateral path compressor.Consider for simplicity, in specification and claims, for example mention " air " and suck or discharge tube 6 or 7 o'clock, be not restrictive, but comprised all gaseous mediums.
In two-stage type mode of execution shown in Figure 4, impeller shaft 10 runs through the length of two compressor stages integratedly, and is as mentioned above, only supported in a unique rolling bearing 16.But also can expect other mode of executions, all corresponding own impeller shaft of each of two compressor stages wherein, drivening piece of the shaft coupling form by an end is coaxial continuous respectively for these.In this case, the impeller shaft that is included in the impeller housing 1 is bearing in two rolling bearings 16, and these two rolling bearings are packed in two bearing housings 14 of this impeller housing 1.In diagram two-stage mode of execution, for another impeller housing 1a, an independent bearing support position is just enough, particularly the bearing support position that forms by a rolling bearing 16 that is encased in the bearing housing 14 adjacent with motor 4.At two impeller housings 1, the shaft coupling at the parting surface position between the 1a is preferably designed to and can compensates at two impeller housings 1, the inevitable alignment error that may exist between the axle of 1a.