Classifications

• • 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
  • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
  • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
• • 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
  • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• • 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
  • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
  • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
  • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
• • 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
  • F04C2230/605—Balancing
• • 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
  • F04C2240/40—Electric motor
• • 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

Definitions

• the invention relates to a scroll compressor comprising a housing composed of a plurality of sub-housings
• a motor part housing in which a drive motor is arranged with a stator fixed to the housing and a coaxial rotor fixed on a main shaft mounted on the one hand of the stator by means of a first main shaft bearing,
• the invention further relates to a method for assembling such
• Such scroll compressors are known from DE 1 1 2014 003 869 T5.
• Scroll compressors are well known to those skilled in the compression of gases, in particular of gaseous refrigerant. They are widely used as compressors in refrigeration systems in general and in motor vehicle air conditioning systems
• a spiral displacer essentially consists of a base plate, from which rises a helical rib. Two such spiral displacers with correspondingly shaped spiral ribs are positioned opposite each other so that their spiral ribs axially intermesh. One of the spiral displacers is mounted on the housing. The other spiral displacer performs a so-called orbital motion, d. H. he describes a circular movement about the central axis. The between the interlocking
• Spiral ribs formed compressor space changes periodically so that in the radially outer region of the spiral displacer gas is sucked and transported under continuous compression to the spiral center.
• a pressure plate passing through the base plate through which the compressed gas is discharged into an accumulator chamber. From there it can be forwarded for application-specific use.
• the outer housing consists of a motor housing and a housing cover.
• the motor sub-housing essentially serves to receive an electric motor designed as an internal rotor with a stator fixed to the housing and a rotatable rotor.
• the rotor is fixed on a main shaft, which is mounted at the closed end of the motor part housing in a radial bearing designed as a floating bearing.
• the dome-shaped housing cover is attached to the open end of the motor sub-housing and bolted to the motor sub-housing.
• the spiral displacers are arranged in the cavity formed by the housing cover.
• the fixed spiral displacer which is referred to here as the second spiral displacer, is screwed to the housing cover.
• the orbiting scroll displacer referred to herein as a first scroll displacer, is eccentrically coupled to the main shaft projecting beyond the stator.
• the main shaft is mounted by means of a second main shaft bearing in a bearing part housing formed in the known scroll compressor as an inner housing.
• the bearing housing also carries a guide for the orbiting, first spiral displacer.
• the bearing sub-housing is clamped between an abutment flange of the motor sub-housing and radially outer axial extensions of the fixed scroll. Radially outside, it is arched over, on the one hand, by the outer wall of the motor sub-housing and, on the other hand, by the outer wall of the housing cover.
• a disadvantage of the known Scrollverdränger is the fact that its functionality, in particular the precise adjustment and
• Balancing depends on its relatively movable components, only in the
• This embodiment makes possible a method for assembling such a scroll compressor, which comprises the following steps:
• the fixed, second spiral displacer is not fixed to the housing cover, but to the bearing part housing.
• This allows the construction of a module which comprises both spiral displacers in their final relative position to one another and the main shaft coupled to the orbiting, first spiral displacer and mounted in the bearing part housing.
• This module represents the heart of the Scrollverdrnatureers, which provided isolated and independent of other components on its functioning, in particular on its precise adjustment can be checked out. This can
• the balanced module can then be inserted into the motor sub-housing provided together with the stator and the first main shaft bearing. With correct pre-assembly of the engine sub-housing, the rotor is automatically positioned so that it can rotate coaxially within the stator while maintaining a small air gap. Subsequently, the housing cover can be placed and fixed.
• connection according to the invention between the spiral displacer and the bearing part housing is preferably by means of screwing.
• the screw is realized by means of a plurality of a wall of the bearing part housing axially passing through and screwed into threaded holes in the second spiral displacer screws.
• this is not a disadvantage because, as described above, the connection of the second spiral with the bearing housing part to form the illustrated core module anyway takes place in an early assembly stage and after adjustment and balancing requires no further change.
• the preferred orientation of the screws can be regarded as an advantageous measure to avoid accidental disassembly of the module. Another advantage of the mentioned orientation lies in the
• the outer wall of the bearing part housing forms an axial portion of the wall of the (overall) housing.
• the housing outer wall of the final-mounted scroll compressor is composed of three axial sections formed by the housing cover, bearing sub-housings and motor sub-housings (in this order).
• the housing cover and / or the engine sub-housing arched over the bearing housing part radially outward in the axial direction, so that the bearing part housing as in the prior art as an inner housing is formed.
• this is less favorable in terms of the radial space conditions than the preferred embodiment of the invention.
• the fixing of the bearing part housing is preferably carried out by clamping the bearing part housing between the housing cover and the motor part housing. This can be realized, in particular, by fixing the housing cover to the motor housing by means of the bearing housing or its outer wall of axially passing screws.
• the interfaces between the individual sub-housings, d. H. the contact areas between the motor part housing and the bearing part housing on the one hand and between the bearing part housing and the housing cover on the other hand, are preferably by means of one each
• the number of two bead seals also represents a favorable compromise between ease of assembly on the one hand and reliability of the seal on the other hand.
• Figure 1 is a sectional view through a scroll compressor according to the invention in
• Figure 2 is a sectional view of the scroll compressor of Figure 1 offset in 90 °
• Figure 3 is a sectional view of the core module of the scroll compressor of Figures 1 and
• Figures 1 and 2 show in offset by 90 ° cross-sectional view
• the housing of the scroll compressor 10 is composed of three sub-housings, namely a motor part housing 12, a bearing part housing 14 and a housing cover 16.
• the long screws 18 pass through the outer walls of the housing cover 16 and the bearing T eilgetudeuses and are screwed into corresponding threads in the motor part housing 12.
• the bearing part housing 14 is clamped between the motor part housing 12 and the housing cover 16.
• the interfaces between the individual sub-housings are sealed in a manner not shown by a respective bead seal.
• an electric motor is positioned, the stator 20 is fixed to the housing fixed and the rotor 22 is fixed on a concentrically mounted main shaft 24 so that it is rotatably disposed within the stator 20.
• a second main shaft bearing 28 is disposed in the bearing housing 14 in which the main shaft 24 extends.
• the main shaft 24 has an eccentric coupling 30 with an orbiting, first spiral displacer 32.
• the first spiral displacer 32 is for
• Main shaft bearings 26 pre-assembled engine sub-housing 12 is inserted and fixed after placing the housing cover 16 by means of the long screws 18.
• the housing cover 16 houses as an essential functional unit only the pressure storage chamber 40 into which the gas compressed between the spiral displacers 32, 36 is passed.
• the storage Partial housing 14 to form as an inner housing, which is arched radially outward in the axial direction of the motor-part housing 12 and / or the housing cover 16, which then abut directly against each other.
• a sealed interface between the sub-housings can be saved.
• this variant is less favorable in terms of the radial space than the variant shown in Figures 1-3.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Rotary Pumps (AREA)
• Applications Or Details Of Rotary Compressors (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=65635667

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Citations (2)

Family Cites Families (15)

• 2018
  • 2018-03-20 DE DE102018204278.0A patent/DE102018204278B4/de active Active
• 2019
  • 2019-02-26 WO PCT/EP2019/054750 patent/WO2019179723A1/de unknown
  • 2019-02-26 CN CN201980008230.3A patent/CN111771060B/zh active Active
  • 2019-02-26 JP JP2020542820A patent/JP2021513625A/ja active Pending
  • 2019-02-26 US US16/982,474 patent/US20210040950A1/en not_active Abandoned
  • 2019-02-26 EP EP19708450.2A patent/EP3768975A1/de not_active Withdrawn

Patent Citations (2)

Non-Patent Citations (1)

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