US3032257A - Refrigeration compressor - Google Patents

Refrigeration compressor Download PDF

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Publication number
US3032257A
US3032257A US8597A US859760A US3032257A US 3032257 A US3032257 A US 3032257A US 8597 A US8597 A US 8597A US 859760 A US859760 A US 859760A US 3032257 A US3032257 A US 3032257A
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United States
Prior art keywords
compressor
rotor
container
housing
bolts
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.)
Expired - Lifetime
Application number
US8597A
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English (en)
Inventor
Culk Raimund
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Individual
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Individual
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Publication of US3032257A publication Critical patent/US3032257A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements

Definitions

  • the present invention relates to a refrigeration compressor which, together with the rotor of an electric motor, is mounted within a gas-tight casing which consists of a thin-walled hood enclosing the rotor with the smallest possible play and of a housing, preferably extended conically to contain the compressor, which housing is tightly sealed by means of a cover.
  • the housing is made in one piece together with the hood, is of thinwalled construction and is provided, on that portion containing the compressor, with a supporting ring for securing the radially projecting rim of a plate carrying the compressor, and a cover to provide a seal for the opening in the housing opposite the motor, through which cover there pass the suction pipe and pressure pipe of the compressor, being placed on a rim flange of the housing to provide a tight seal (see US. Patent No. 2,629,542).
  • the centring and securing of the compressor, together with the rotor is carried out on a supporting ring which is located in the extended lower portion of the housing, so that the rotating masses of the rotor and of the rotor shaft are disposed far from their bearing position.
  • This is, however, disadvantageous, since the slightest alteration in position of the supporting ring in relation to the housing, in consequence of the heat stresses and difierences in pressure occurring in the housing, results in the rotor rubbing against the inner wall of the housing part forming the hood.
  • this type of compressor construction demands, of necessity, a greater air space than would be necessary to achieve a high degree of electrical efliciency.
  • One object of the invention is to provide an assembly comprizing an electric motor, a gas-tight container part of which is cylindrical and surrounds the rotor of the motor, the stator of the motor being coaxially fixed around the cylindrical part of the container, a compressor suitable for compressing refrigerant, the compressor being fixed in the container, a shaft connecting the rotor with the compressor so that the former can drive the latter, means securing the compressor to the inner face of the container wall and means adjacent to these securing means centering the rotor in the stator,
  • FIGURES 1 to 10 the various possible methods of securing the compressor inside the casing are illustrated in section.
  • FIGURES l, 3, 5, 7 and 9 show longitudinal sections along the lines I-I, III-III, V--V, VII-VII, and lXIX of FIGURES 2, 4, 6, 8 and 10, respectively, and
  • FIGURES 2, 4, 6, 8 and 10 show transverse sections along the lines lIlI, IV-IV, VI-VI, VIII-VIII and X-X of FIGURES 1, 3, 5, 7 and 9, respectively, the compressor as illustrated is turned into the plane of the drawing in the longitudinal sections, whilst in the transverse sections the stator housing is omitted or illustrated only in part, for the sake of greater clarity.
  • the gas-tight casing or container which encloses the refrigeration compressor 14, together with the rotor 9 of an electric motor consists of a hood 1, a housing 2 and a cover 4.
  • the housing 2 is preferably constructed to widen conically and is composed of a cylindrical part 2' of the housing on the hood end, an intermediary section 2" and a housing jacket 2'" on the end closed by the cover.
  • On the hood 1 is coaxially fixed the stator 10 of an electric motor, which stator is preferably enclosed by a stator housing 10'.
  • retaining bolts 6 are secured in gas-tight manner by welding or soldering in appropriate borings.
  • a centring projection 6" which is machined in common with the inner surface of the hood 1 and of the cylindrical part 2' on the hood side, and to which a compressor cylinder 8, which is of one piece with a compressor-support frame 7, is secured by means of screws 5.
  • the retaining bolts 6 project out beyond the outer surface of the intermediary section 2" of the housing 2,
  • the retaining bolts 6 are also provided, at the ends located outside the housing 2, with a centring projection 6" which serves for the common machining of the centring projection 6" located inside the housing 2 and of the internal jacket surface of the hood 1.
  • the centring and securing of the compressor cylinder 8, together with the compressor-support frame 7, can be carried out indirectly at the transition section 2" of the housing 2 through the retaining bolts 6, it may be seen from FIGURES 3, 4 or 5, 6 that the compressor cylinder 8 or the compressor-support frame 7 can also be centrally secured directly to the transition or intermediary section 2 of the housing 2.
  • step-shaped pressed-out sections 3 are provided, the internal surfaces 3 of which are machined in common with the internal surfaces of the hood I and of the part 2' of the housing on the hood side.
  • the compressor cylinder 8 is directly secured in these pressed-out sections 3 by means of screws 50 which are inserted, from outside, into appropriate holes in the pressed-out sections 3, and seal the case housing outwardly in a gas-tight manner by means of the sealing rings 12.
  • 7% denotes the compressor frame.
  • the pressed out sections 31, according to FIGURES 5 and 6, are bored, not to permit the passage of screws, but to receive retaining bolts 61, which are located in the pressed-out sections 31 from outside by means of an extension 61' of reduced cross section and which form a gas-tight fit'with the pressed out sections for example by welding or soldering.
  • the face surface of the extension 61 which points into the interior of the housing 2, is machined in common with that inner surface 31' of the pressed out sections 31 to which the fixed compressor part, for example the compressor support frame 71, is secured by means of the screws 51. Since the inner surface of the hood I is also machined in common with the inner surface 31' of the pressed-out sections 3, an exact central position is ensured between a shaft 11 carrying a rotor 9 and the hood I enclosing the rotor 9.
  • FIGURES 7 and 8 differs from that of FIGURES 5 and 6 in that the retaining bolt 62 is inserted from inside and by means of its exten sion 62, of reduced cross section, locates the holes in the pressed-out section 32, and'is provided, at its end projecting inwardly of the housing 2, with a centring projection 62.
  • the centring and securing of the compressor-support frame 72 is thus carried out exclusively at the retaining bolts 62, so that the inner surface of the pressed-out sections 32 needs no machining.
  • the gastight connection of the retaining bolts 6 with the pressedout sections 32 is produced by connecting the outwardly projecting extension 62' of the retaining bolt 62. to the outer surface of the pressed-out sections 32 by means of welding or riveting.
  • FIGURE 7 there is indicated, in dotted lines, the
  • Centring projections 63" are provided for centring the compressor cylinder 3 at the securing bolts 63, whilst the compressor-support bearing flange 7 is itself again centred in an annular recess 73' in the compressor cylinder 8.
  • FIGURES 9 and 10 A method of centring and securing similar to that shown at the left-hand side of FIGURES 9 and 10 may be seen at the right hand side thereof, where the securing bolts 63 are secured in the pressed-out sections 33 from within by means of welding or soldering. This type of securing also aliows the threaded borings in the retaining bolts 63 to extend throughout the bolts.
  • the lower rim of the housing jacket 2" on the cover end is connected to the downwardly bent rim portion of a cover 4 by means of a welded seam, in the known manner of encased refrigeration motors, which seam, in order to undertake repairs, may be easily removed by machining and, after the repairs, can be easily renewed on the rim which has not been appreciably shortened.
  • the invention is not limited to the embodiments illustrated by way of example in the drawings, since alternative means may be used for centring and securing, direct- 1y or indirectly, a fixed compressor part to the transition section of the housing'within the scope of the invention. Furthermore a reliable and gas-tight connection of all parts of the gas-tight container (housing, hood and cover) may be very easily achieved not only by welding but also by hard soldering in a protective gas atmosphere, it is therefore possible to make do with the simplest jigs and templates for welding or soldering the various retaining bolts so that very cheap mass production of the refrigeration compressor is possible.
  • an electric motor with its rotor axis upright, a gas-tight container whose upper part is cylindrical and contains the rotor of the electric motor, the stator of the motor being coaxially fixed around this cylindrical part, the part of the container below the motor comprising a diverging intermediary portion and below this, a base portion of the container of greater width than the upper cylindrical part of the container, a compressor suitable for compressing refrigerant, this compressor being fixed in the base part of the container, a shaft connecting the rotor with the compressor so that the former can drive the latter, the shaft also supporting the rotor with which it is coaxial, a frame in the container supporting the compressor, bearing means on the frame rotatably supporting the rotor, abutment means in the region of the intermediary portion of the container and rigid with the cylindrical portion of the container, abutment means on the frame, the abutment means on the container engaging the abutment means on the frame so as to center the rotor in the stator, and means situated in the region of
  • an electric motor with its rotor axis upright, a gas-tight container whose upper part is cylindrical and contains the rotor of the electric motor, the stator of the motor being coaxially fixed around this cylindrical part, the part of the container below the motor comprising a diverging intermediary portion and, below this, a base portion of greater width than the upper cylindrical part of the container, a compressor suitable for compressing refrigerant, this compressor being fixed in the base part of the container, a shaft connecting the rotor with compressor so that the former can drive the latter, the shaft also supporting the rotor with which it is coaxial, a frame in the container supporting the compressor, bearing means on the frame rotatably supporting the rotor, bolts passing through, and secured in a gas-tight manner in, holes in the intermediary portion of the container, these bolts having abutment faces engaging abutment faces on the frame so as to center the rotor in the stator, and screws screwed into holes in the bolts so as to secure the frame to them
  • an electric motor with its rotor axis upright a gas-tight container whose upper part is cylindrical and contains the rotor of the electric motor, the stator of the motor being placed around this cylindrical part, the part of the container below the motor comprising a diverging intermediary part pressed so that parts of its inner surface face radially inwards, the part of the container below this intermediary position being of greater width than the part of the container surrounding the rotor, a compressor in this part of the container, and being suitable for the compression of refrigerant, a shaft connecting the compressor with the rotor so that the latter can drive the former, a frame supporting the compressor and the rotor, this frame abutting against the above-mentioned inwardly facing surface parts of the diverging intermediary part of the container, so as to center the rotor in the stator, and means situated near the inwardly facing surfaces, securing the frame to the container.
  • an electric motor with its rotor axis upright a gas-tight container whose upper part is cylindrical and contains the rotor of the electric motor, the stator of the motor being coaxially fixed around this cylindrical part of the container, the part of the container below the motor comprising a diverging intermediary portion and below this is a base portion of the container of greater width than the upper cylindrical part of the container, a compressor suitable for compressing refrigerant, this compressor being fixed in the base part of the container, a shaft connecting the rotor with the compressor so that the former can drive the latter, the shaft also supporting the rotor with which it is coaxial, a frame in the container supporting the compressor, bearing means fixed to the frame and rotatably supporting the rotor, bolts fixed to the inwardly turned face of the intermediary portion of the container, these bolts having abutment faces in contact with the frame thus serving to center the rotor of the motor in the stator, and screws securing the frame to the bolts, the screws passing into holes in the bolt

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
US8597A 1959-02-25 1960-02-15 Refrigeration compressor Expired - Lifetime US3032257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT146259A AT213931B (de) 1959-02-25 1959-02-25 Kältekompressor

Publications (1)

Publication Number Publication Date
US3032257A true US3032257A (en) 1962-05-01

Family

ID=3514433

Family Applications (1)

Application Number Title Priority Date Filing Date
US8597A Expired - Lifetime US3032257A (en) 1959-02-25 1960-02-15 Refrigeration compressor

Country Status (6)

Country Link
US (1) US3032257A (de)
AT (1) AT213931B (de)
DE (1) DE1092936B (de)
ES (1) ES251515A1 (de)
FR (1) FR1249102A (de)
GB (1) GB875282A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476993B1 (de) * 1964-05-12 1971-05-06 Raimund Culk Kaeltekompressor mit Haubenmotor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619086A (en) * 1970-02-26 1971-11-09 Westinghouse Electric Corp Self-contained centrifugal refrigerant gas compressor and electric motor
FR2488947B1 (fr) * 1980-08-20 1985-10-04 Unite Hermetique Dispositif d'amortissement des vibrations produites par un compresseur hermetique, et pompes a chaleur munies d'un tel dispositif
GB2188376A (en) * 1986-03-24 1987-09-30 Linear Motors Ltd Electric driven compressor
CH704990A1 (de) * 2011-05-20 2012-11-30 Remo Meister Verfahren zum Reparieren bzw. Überprüfen einer in einem druckdicht geschlossenen Behälter untergebrachten, insbesondere kältetechnischen Anlage sowie Behälter zur Durchführung des Verfahrens.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1263633A (en) * 1917-06-13 1918-04-23 Heinrich Zoelly Electric-driven refrigerating-machine.
DE847452C (de) * 1949-08-30 1952-08-25 Bosch Gmbh Robert Gasdicht ummantelte Arbeitsmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT99082B (de) * 1922-12-23 1925-01-26 Escher Wyss Maschf Ag Verfahren und Einrichtung zur Sicherung der Schmierung von selbsttätig arbeitenden Kleinkältemaschinen.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1263633A (en) * 1917-06-13 1918-04-23 Heinrich Zoelly Electric-driven refrigerating-machine.
DE847452C (de) * 1949-08-30 1952-08-25 Bosch Gmbh Robert Gasdicht ummantelte Arbeitsmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476993B1 (de) * 1964-05-12 1971-05-06 Raimund Culk Kaeltekompressor mit Haubenmotor

Also Published As

Publication number Publication date
AT213931B (de) 1961-03-10
DE1092936B (de) 1960-11-17
GB875282A (en) 1961-08-16
ES251515A1 (es) 1959-12-16
FR1249102A (fr) 1960-12-23

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