EP3516173A1 - Procédé permettant de fabriquer un carter d'un compresseur à vis - Google Patents

Procédé permettant de fabriquer un carter d'un compresseur à vis

Info

Publication number
EP3516173A1
EP3516173A1 EP17772659.3A EP17772659A EP3516173A1 EP 3516173 A1 EP3516173 A1 EP 3516173A1 EP 17772659 A EP17772659 A EP 17772659A EP 3516173 A1 EP3516173 A1 EP 3516173A1
Authority
EP
European Patent Office
Prior art keywords
housing
housing body
housing cover
screw
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17772659.3A
Other languages
German (de)
English (en)
Inventor
Gilles Hebrard
Jean-Baptiste Marescot
Jörg MELLAR
Thomas Weinhold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=59955550&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3516173(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP3516173A1 publication Critical patent/EP3516173A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/009—Stepped drills
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1005—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • F04C2210/221—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/10—Manufacture by removing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/603—Centering; Aligning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/52—Bearings for assemblies with supports on both sides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/60—Shafts

Definitions

  • the present invention relates to a method of manufacturing a housing of a screw compressor, wherein the housing has at least one housing body and at least one housing cover. Furthermore, the present invention relates to a housing of a screw compressor and a
  • DD 2003 49 AI shows a device for end walls on screw machines with at least two parallel arranged and pairwise intermeshing screw rotors, with a working space consisting of a screw rotors tightly enclosing the shell wall and end walls.
  • DE 37 37 358 A1 discloses a barrel housing for an internally mounted
  • Screw pump and corresponding method of manufacture In a housing body receiving bores of the screw are provided.
  • disk-like pieces of material, which have the receiving bores of the screw, made of wear-resistant materials are used in the housing.
  • the wear-resistant material may be in particular ceramic and according to the
  • the invention also comprises a method for producing this housing, according to which the wear-resistant material pieces are poured into the housing body by means of plastic.
  • DE 40 16 841 A1 discloses a method for manufacturing a barrel housing a screw pump is known. In order to avoid the production-related difficulties arising in the previous production method by drilling and clearing of overlapping bores, the housing is divided in the middle, so that it is possible to move from internal machining to external machining by means of profiling or profile grinding.
  • Screw pumps The manufacturing process has several steps " wherein the housing is made with larger holes than the finished size unprocessed and a smaller mandrel or core is used in each hole. Thereafter, a hardening plastic is introduced into the annular space between the mandrel and the bore wall and the mandrel is pulled out after curing of the plastic.
  • the screw rotors of a screw compressor are at both ends with
  • Rolling bearings mounted in the housing or stored. Basically, it is necessary to form the housing in two parts due to manufacturing and assembly requirements. In order to achieve the centering of the corresponding bearing seats of the screw rotors, the use of dowel pins or centering pins is proposed for this purpose in the rule.
  • housing body and lid are in different
  • the invention is based on the idea of designing the bolt insertion openings in such a way that they are already manufactured with the correct alignment of the bearing seats and the bolt holes with the aid of an alignment tool in the housing of the screw compressor.
  • the basic idea is further that based on the provisionally assembled housing body and housing cover, which are already aligned correctly by means of the alignment tool, the bolt insert opening is then introduced both in the housing body and in the housing cover with a single manufacturing process, so that the bolt insertion opening is already correctly oriented.
  • a greater accuracy is achieved than would be possible in a separate production of the bolt insert openings in the housing body and housing cover, so that in addition a higher accuracy of
  • Housing cover (for example, based on the bearing seats) are chosen coarser, resulting in an additional simplification of the production
  • the introduction of the bearing seats for the at least one screw rotor of the screw compressor in the housing body and in the housing cover is carried out in separate manufacturing operations. On the one hand be by the separate introduction of the bearing seats in the housing cover and
  • the housing body and the housing cover are fastened to one another by means of at least one screw connection.
  • Housing body and housing cover prevented.
  • the centering or alignment is ensured by means of the alignment tool.
  • Alignment tool in the bearing seats in the housing body and in the housing cover the screw is tightened so that during insertion and
  • Housing body can be aligned with each other. For a flawless Alignment of the bearing seats in the housing body and housing cover, it is imperative that the screw is tightened only in the already aligned state of the two components. If the tightening of the screw connection took place before the actual alignment of the housing body and the housing cover, undesirable stresses would arise between the housing cover, the alignment tool and the housing body, which should be avoided in any case. In addition, the usually quite expensive alignment tool can be damaged under these circumstances and thus become unusable for further uses,
  • the alignment tool is cylindrical and stepped, so that it has at least one first bearing insertion section with a first diameter and at least one second bearing insertion section with a second diameter.
  • the screw rotors are supported by circular rolling bearings, so that the cylindrical configuration of the bearing seats within the housing body and the housing cover inevitably results.
  • the shape of the alignment tool should also be cylindrical, thereby resulting in an optimal fit with the respective bearing seats Due to the gradation of the alignment tool and the resulting first and second diameters, its installation can be simplified
  • an axial stop is formed by the gradation, whereby an axially defined positioning of the first bearing insertion portion and the second
  • Lagereinsetzabites is inserted in the bearing seat in the housing cover.
  • the alignment of these bearing seats can be done with high accuracy.
  • Another advantage is that only certain portions, namely, the first and second bearing insertion portions of the alignment tool need to be machined, so that the manufacturing cost of the alignment tool can be reduced.
  • Housing body runs.
  • This embodiment of the common production process of the at least one bolt insert opening allows a very easy access during its production, starting from an outer side of the housing cover, as a result of which complex and, under certain circumstances, difficult to control production steps can be omitted and the production is additionally shortened.
  • Manufacturing process in particular by drilling, is performed.
  • Bolt insert opening associated chipping volume is relatively low, offers in this regard, in particular a drilling method.
  • Other manufacturing methods suitable in this context such as milling, eroding, rubbing or grinding, or combinations thereof may also be used.
  • the machining production method is carried out by means of at least one cutting production tool, in particular a drilling tool, wherein the production tool is rotated and is rotationally symmetrical.
  • a drilling tool wherein the production tool is rotated and is rotationally symmetrical.
  • the drilling tool can be designed as a twist drill, as a boring bar, as a reamer or in any other suitable manner.
  • the drilling tool can also be made of steel, in particular HSS steel, hard metal, steel with a hard metal coating, steel with integrated carbide cutting plates or other suitable materials or
  • Assembly step may be, for example, further processing steps such as milling out further work surfaces, cleaning, deburring or, for example, the
  • Housing cover sits.
  • the dowel pin By means of the dowel pin in the assembled state, the alignment of the housing body and housing cover to each other can be ensured, An additional attachment of housing cover with housing body can be done by means of additional fasteners, such as screws.
  • At least two bolt insertion openings are provided both in the housing cover and in the housing body.
  • Enclosure body can improve the accuracy of the orientation of the housing cover to the housing body.
  • the use of more than two bolt insert openings in the housing body and housing cover, however, can lead to over-determination and difficult assembly, so therefore the use of two
  • the present invention relates to a housing of a
  • Screw compressor obtained by the method described above.
  • the present invention relates to a screw compressor with a housing, which was obtained by the method described above. Further details and advantages of the invention will now be described with reference to one of the drawings.
  • FIG. 1 is a schematic sectional view of an embodiment of a
  • FIG. 2 is a sectional view through the means of the invention
  • Fig. 3 is a sectional view through the means of the invention
  • Fig. 4 is a sectional view through the means of the invention
  • Fig. 1 shows a schematic sectional view of a screw compressor 10 in the shenne of an embodiment of the present invention, the housing 20 is produced by means of a manufacturing method according to the invention.
  • the screw compressor 10 has a mounting flange 12 for the mechanical attachment of the screw compressor 10 to a drive not shown here in detail in the form of an electric motor. Shown, however, is the input shaft 14, via which the torque is transmitted from the electric motor to one of the two screw rotors 16 and 18, namely the screw rotor 16.
  • the screw rotor 18 meshes with the screw rotor 16 and is driven via this.
  • the screw compressor 10 has a housing 20 in which the essential components of the screw compressor 10 are housed.
  • the housing 20 is filled with oil 22.
  • Air inlet side is on the housing 20 of the screw compressor 10 a
  • the inlet nozzle 24 is designed such that an air filter 26 is arranged on it.
  • an air inlet 28 is provided radially on the air inlet pipe 24.
  • a spring-loaded valve core 30 is provided, designed here as an axial seal. This valve insert 30 serves as a check valve.
  • an air supply channel 32 Downstream of the valve insert 30, an air supply channel 32 is provided, which supplies the air to the two screw rotors 16, 18.
  • an air outlet pipe 34 On the output side of the two screw rotors 16, 18, an air outlet pipe 34 is provided with a riser 38. in the region of the end of the riser 38, a temperature sensor 38 is provided, by means of which the oil temperature can be monitored.
  • a holder 40 for an air de-oiling element 42 is provided in the air outlet area.
  • the holder 40 for the air de-oiling element has in the assembled state in the area facing the bottom (as shown in Fig. 1), the air de-oiling element 42.
  • the holder for the air de-oiling element 40 has a
  • the check valve 48 and the minimum pressure valve 50 may also be formed in a common, combined valve,
  • the air outlet 51 is connected to correspondingly known compressed air consumers in the rule.
  • a riser 52 is provided which has the outlet of the holder 40 for the air de-oiling element 42 when passing into the housing 20 a filter and check valve 54.
  • a nozzle 56 Downstream of the filter and check valve 54, a nozzle 56 is provided in a housing bore.
  • the oil return line 58 leads back approximately into the central region of the screw rotor 16 or the screw rotor 18 to supply oil 22 again.
  • a ⁇ tablassschraube 59 is provided within the assembled state of the bottom portion of the housing 20.
  • a corresponding oil drain opening can be opened, via which the oil 22 can be drained.
  • the oil filter 62 is attached in the lower region of the housing 20 and the projection 60 is present, to which the oil filter 62 is attached.
  • the oil 22 is first passed to a thermostatic valve 66.
  • thermostatic valve 66 instead of the thermostatic valve 66, a control and / or
  • a nozzle 72 is provided, which is provided in the housing 20 in connection with the return line 68.
  • the cooler 74 is connected to the projection 60.
  • a safety valve 76 In the upper region of the housing 20 (relative to the mounted state) there is a safety valve 76, via which an excessive pressure in the housing 20 can be reduced.
  • a bypass line 78 which leads to a relief valve 80. Air can be returned to the area of the air inlet 28 via this relief valve 80, which is activated by means of a connection to the air supply 32.
  • a vent valve not shown in detail and also a nozzle (reduction in diameter of the feeding line) may be provided.
  • Housing 20 an oil level sensor 82 may be provided.
  • This oil level sensor 82 may, for example, be an optical sensor and designed and set up so that it can be determined from the sensor signal whether the oil level is above the oil level sensor 82 during operation or if the oil level sensor 82 is free and the oil level has dropped accordingly.
  • an alarm unit can also be provided which outputs or forwards an appropriate error message or warning message to the user of the system.
  • the function of the screw compressor 10 shown in FIG. 1 is as follows:
  • Air is supplied via the air inlet 28 and passes through the check valve 30 to the screw rotors 16, 18, where the air is compressed.
  • the compressed air-oil mixture with a factor between 5 to 16 times
  • the air which still partially carries oil particles, is then guided via the holder 40 into the air de-oiling element 42 and, provided that the corresponding minimum pressure is reached, enters the air outlet line 51.
  • the oil 22 located in the housing 20 is via the oil filter 82 and possibly on the
  • Heat exchanger 74 kept at operating temperature
  • the heat exchanger 74 is not used and is not switched on.
  • Purification in the oil filter 84 is supplied via the line 88 oil of the screw rotor 18 or the screw rotor 18, but also the bearing 72.
  • the screw rotor 16 or the screw rotor 18 is supplied via the return line 52, 58 with ⁇ f 22, here is the purification of the oil 22 in the air de-oiling 42nd
  • Fig. 2 shows a sectional view through the screw compressor 10 according to FIG. 1, the housing 20 according to the invention by means of an inventive
  • the housing 20 consists of a housing body 20a and a housing cover 20b,
  • the housing body 20a has a substantially cup-shaped shape and has an open end 120 and an opposite partially open end 124. Further, the housing body 20 a is a one-piece component of the housing 20 of the screw compressor 10.
  • the two bearing seats 108 are formed substantially as cylindrical through-holes in the partially opened end 124 of the housing body 20a.
  • One of the two bearing seats 108 is formed as a stepped through-hole having a first larger diameter than the first bearing seat portion.
  • the further portion of the smaller diameter through-hole is formed as a first cylindrical transition hole and extends from the first bearing seat portion to an outer surface of the partially opened end 124 of the housing body 20a.
  • the other screw bearing seat 108 is formed as ungestufte through-hole with a substantially uniform uniform diameter.
  • the ungraded through-hole is axially divided into a second bearing seat portion and a second cylindrical transition bore
  • the second cylindrical transition bore extends from the second
  • the open end 120 of the Gehiusekorpus 20 a has a flat surface 128 which is aligned perpendicular to the center axes of the two bearing seats 108.
  • planar surface 126 of the Gehiusekorpus 20 a of the housing cover 20 b is arranged by means of another planar inner surface 128.
  • the Whytiusekorpus 20a and the housing cover 20b have several advantages
  • Screw connections (not shown in Fig. 2) on.
  • the two screw holes 112, 114 are spatially limited in the assembled state of the housing 20 in addition to the pot-like structure of the housing body 20a by the flat inner surface 128 of the housing cover 20b.
  • the planar inner surface 128 of the housing cover 20 b is also aligned substantially perpendicular to the center axes of the bearing seats 108.
  • the two further bearing seats 110 are formed within the housing cover 20b.
  • the two further bearing seats 110 are essentially cylindrical
  • Einsenkbohrungen formed within a flat outer surface 130 of the housing cover 20b.
  • the bearing seats 1 10 are also each connected by a cylindrical transitional bore within the housing cover 20 b with the screw holes 1 12, 114, which is respectively between the bearing seats 1 10 and the screw holes 1 12, 114 is arranged.
  • the bearing seats 110 of the housing cover 20b and the two bearing seats 108 of the housing body 108 are in the assembled state of the housing 20 in
  • two alignment tools 100, 102 are inserted in the bearing seats 108 of the housing body 20a and in the bearing seats 110 of the housing cover 20b in the provisionally assembled state of the housing 20
  • the alignment tools 100, 102 are each cylindrical and stepped.
  • the alignment tools 100, 102 thus each consist of a first elongated cylinder and a second cylinder, which is connected integrally and coaxially by means of an end face with an end face of the first elongated cylinder.
  • the diameter of the second cylinder is also greater than the diameter of the first elongate cylinder ,
  • the alignment tools 100, 102 have in the transition between each of the first elongated cylinder and the second cylinder an axial stop.
  • the alignment tools 100, 102 also each have a first
  • Bearing insertion portion 116 having a first diameter.
  • the alignment tools 100, 102 each have a second one
  • Bearing insertion portion 118 having a second diameter.
  • the first bearing insertion portion 116 is disposed at the free end portion of the first elongated cylinder.
  • the second bearing insertion portion 118 is disposed on the end portion of the second cylinder facing the first elongate cylinder.
  • the two alignment tools 100, 102 extend continuously from the bearing seats 1 10 of the housing cover 20 b through the screw holes 112, 1 14 therethrough to the bearing seats 108.
  • the first bearing insertion portion 1 16 is thus in each case in the bearing seat 108 in
  • Housing body 20a used and the second bearing insertion portion 1 16 is inserted respectively in the bearing seat 110 in the housing cover 20b.
  • two bolt insertion openings 104 are provided in the housing body 20a.
  • the two bolt insertion openings 104 are introduced by means of a drilling tool 122 in an outer peripheral region of the planar surface 126 of the open end 120 of the housing body 20a as Einsenkbohrungen or blind holes.
  • a drilling tool 122 in an outer peripheral region of the planar surface 126 of the open end 120 of the housing body 20a as Einsenkbohrungen or blind holes.
  • two bolt insertion openings 104 are also provided, which are formed as a through hole.
  • the two bolt insertion openings 104 are introduced by means of a drilling tool 122 in an outer peripheral region of the planar inner surface 128 of the housing cover as through holes.
  • Housing cover 20b are aligned by an alignment angle of 180 ° to each other.
  • Bolt insert openings 104 of the housing body 20a and the housing cover 20b to each other are also conceivable.
  • Fig. 3 shows a sectional view through the means of the invention
  • Bolt insert openings 104 have been introduced. According to FIG. 3, in the provisionally assembled state of the housing 20, the two bolt insertion openings 104 introduced both in the housing body 20a and in the housing cover 20b are aligned coaxially with one another,
  • Fig. 4 shows a sectional view through the means of the invention
  • Housing cover 20b each used a fitting pin 106.
  • the two locating pins 106 are both partially inserted in the housing body 20a and partially in the housing cover 20b.
  • the introduction of the bearing seats 108, 110 for the two screw rotors 16, 18 of the screw compressor 10 in the housing body 20a and in the housing cover 20b is performed in separate manufacturing operations. Then, the introduction of the cylindrical transitional bores of the bearing seats 108, 1 10 takes place in the housing body 20a and housing cover! 20b,
  • housing body 20a and housing cover! 20b takes place in a common manufacturing process with the
  • Housing body 20a and housing cover 20b also in a separate
  • Screw rotors 16, 18 of the screw compressor 10 in the housing body 20 a introduced.
  • the introduction of the screw holes 1 12, 1 14 and the bearing seats 108 in the housing body 20 a can also be done in a common manufacturing process.
  • housing body 20a there is a provisional assembly of housing body 20a and
  • housing body 20a During the provisional assembly of housing body 20a and
  • the alignment tools 100, 102 inserted from the outside through each of the bearing seats 1 10 for the screw rotors 16, 18 in the housing cover 20b and through the screw holes 1 12, 1 14 therethrough. Subsequently, alignment tools 100, 102 are inserted into the two bearing seats 108, 110 in the housing body 20a and in the housing cover 20b.
  • the two bolt insertion holes 104 both in the housing body 20a and in the housing cover 20b are drilled out with a common drilling operation and thus produced.
  • Bolt insert openings 104 extend from an outer side of the housing cover 20b axially inwards in the direction of the open end 120 of the housing body 20a facing the housing cover 20b.
  • the common drilling process takes place with an adjustable feed in
  • the drilling tool 122 is first rotated and moved near the outer surface of the housing cover 20b to the position in which the bolt insertion apertures 104 are to be drilled out.
  • the drilling tool 122 is already aligned at the beginning of the common drilling operation perpendicular to the planar inner surface 128 of the housing cover 20b.
  • Production direction drilled in the housing cover 20b as a through hole. After drilling through the housing cover 20b immediately thereafter drilling through the planar surface 126 of the housing body 20a in
  • Housing body has drilled 20a
  • the thus formed bolt insert opening 104 is thus introduced as Einsenkbohrung or blind hole in the housing body.
  • a common termination of the common drilling operation which includes the complete extension of the drilling tool 122 from the housing body 20a and the housing cover 20b opposite to the direction of production.
  • the drilling tool 122 can be rotated.
  • the housing body 20a and the housing cover! 20b fastened together by means of several screw.
  • housing body 20a and housing cover 20b After the provisional assembly of housing body 20a and housing cover 20b they are separated again.
  • housing body 20a and housing cover 20b takes place for at least one further processing or assembly step.
  • Another processing step may be, for example, the machining in the inner regions of the housing body 20a and the housing cover 20b.
  • a further processing step may represent the cleaning or and deburring of the bolt insertion openings 104.
  • Housing interior and functional performance of the screw compressor 10 relevant components and the final assembly of the housing 20 may be.
  • a fitting bolt 106 is then inserted into the bolt insertion openings 104, which in the case of both

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rolling Contact Bearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Milling Processes (AREA)

Abstract

La présente invention concerne un procédé permettant de fabriquer un carter (20) d'un compresseur à vis (10), le carter (20) comprenant au moins un corps de carter (20a) et au moins un couvercle de carter (20b), le procédé comprenant les étapes consistant à : ménager des sièges de palier (108, 110) pour au moins un rotor à vis (16, 18) du compresseur à vis (10) dans le corps de carter (20a) et dans le couvercle de carter (20b) ; ménager au moins un alésage de vis (112) pour ledit au moins un rotor à vis (16, 18) du compresseur à vis (10) dans le corps de carter (20a) ; assembler provisoirement le corps de carter (20a) et le couvercle de carter (20b) en utilisant au moins un outil d'alignement (100, 102) pour assurer l'alignement de l'axe médian de rotor à vis avec les axes médians des sièges de palier (108, 110) et de l'alésage de vis (112) ; et ménager au moins une ouverture d'insertion de boulon (104) à la fois dans le corps de carter (20a) et dans le couvercle de carter (20b) à l'aide d'au moins une opération de fabrication commune. La présente invention concerne en outre un carter (20) d'un compresseur à vis (10) ainsi qu'un compresseur à vis (10).
EP17772659.3A 2016-09-21 2017-09-19 Procédé permettant de fabriquer un carter d'un compresseur à vis Withdrawn EP3516173A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016011433 2016-09-21
DE102017100537.4A DE102017100537A1 (de) 2016-09-21 2017-01-12 Verfahren zum Herstellen eines Gehäuses eines Schraubenkompressors
PCT/EP2017/073595 WO2018054886A1 (fr) 2016-09-21 2017-09-19 Procédé permettant de fabriquer un carter d'un compresseur à vis

Publications (1)

Publication Number Publication Date
EP3516173A1 true EP3516173A1 (fr) 2019-07-31

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Family Applications (3)

Application Number Title Priority Date Filing Date
EP17772660.1A Withdrawn EP3516219A1 (fr) 2016-09-21 2017-09-19 Procédé de fabrication d'un carter d'un compresseur à vis
EP17772018.2A Active EP3516221B1 (fr) 2016-09-21 2017-09-19 Système de compresseur à vis pour véhicule utilitaire
EP17772659.3A Withdrawn EP3516173A1 (fr) 2016-09-21 2017-09-19 Procédé permettant de fabriquer un carter d'un compresseur à vis

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP17772660.1A Withdrawn EP3516219A1 (fr) 2016-09-21 2017-09-19 Procédé de fabrication d'un carter d'un compresseur à vis
EP17772018.2A Active EP3516221B1 (fr) 2016-09-21 2017-09-19 Système de compresseur à vis pour véhicule utilitaire

Country Status (8)

Country Link
US (3) US20190338770A1 (fr)
EP (3) EP3516219A1 (fr)
JP (3) JP2019529807A (fr)
KR (3) KR20190045936A (fr)
CN (4) CN109715952A (fr)
BR (3) BR112019005099A2 (fr)
DE (2) DE102017100537A1 (fr)
WO (3) WO2018054860A1 (fr)

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JP2019532224A (ja) 2019-11-07
CN116398434A (zh) 2023-07-07
US20190211825A1 (en) 2019-07-11
JP2019529807A (ja) 2019-10-17
BR112019005055A2 (pt) 2019-06-18
CN109937286A (zh) 2019-06-25
KR20190045352A (ko) 2019-05-02
US20190338770A1 (en) 2019-11-07
EP3516221A1 (fr) 2019-07-31
WO2018054860A1 (fr) 2018-03-29
DE102017104087A1 (de) 2018-03-22
KR20190045936A (ko) 2019-05-03
WO2018054886A1 (fr) 2018-03-29
WO2018054887A1 (fr) 2018-03-29
EP3516219A1 (fr) 2019-07-31
EP3516221B1 (fr) 2022-04-20
BR112019005099A2 (pt) 2019-06-04
KR20190045351A (ko) 2019-05-02
DE102017100537A1 (de) 2018-03-22
CN109715952A (zh) 2019-05-03
BR112019005102A2 (pt) 2019-06-04
JP2019529797A (ja) 2019-10-17
US20190338768A1 (en) 2019-11-07
WO2018054886A8 (fr) 2019-05-23
CN109952438A (zh) 2019-06-28

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