US3531222A - Hermetic compressor discharge tube construction - Google Patents

Hermetic compressor discharge tube construction Download PDF

Info

Publication number
US3531222A
US3531222A US751123A US3531222DA US3531222A US 3531222 A US3531222 A US 3531222A US 751123 A US751123 A US 751123A US 3531222D A US3531222D A US 3531222DA US 3531222 A US3531222 A US 3531222A
Authority
US
United States
Prior art keywords
tube
bracket
housing
compressor
wall
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
US751123A
Other languages
English (en)
Inventor
Freddie D Randall
James S Utley
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.)
Tecumseh Products Co
Original Assignee
Tecumseh Products Co
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
Application filed by Tecumseh Products Co filed Critical Tecumseh Products Co
Application granted granted Critical
Publication of US3531222A publication Critical patent/US3531222A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • F16L3/123—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface
    • F16L3/1233—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface the member being of metal, with or without an other layer of other material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/022—Sealing by welding
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Definitions

  • a hermetic compressor in which a motor-compressor unit is resiliently suspended within a hermetic housing and a discharge tube extends within the housing from the compressor outlet to a connector tube which extends through the wall of the housing to the exterior of the compressor.
  • the connector tube is in part supported on the wall of the housing by a rigid connection.
  • the connector tube is also supported at a point spaced from the rigid connection and adjacent the discharge tube-connector tube interconnection by a bracket secured to the wall of the housing, and by a spring clip having legs inserted through the bracket and a center portion encircling the connector tube.
  • the clip is self-retaining when mounted in assembled relation with the bracket and tube and also provides a resilient support for the tubes allowing limited flexure at their interconnection to relieve stresses.
  • This invention relates to hermetic compressors and more particularly to a mounting arrangement and construction for the discharge and connector tubes of the compressor.
  • An object of the present invention is to provide a hermetic compressor having improved means for supporting the discharge and connector tubes within the compressor housing.
  • Another object is to provide a compressor of the above character wherein said support means comprises a very simple and inexpensive spring clip bracket arrangement which eliminates the usual silver solder connection of the discharge connector tube to the bracket, thereby reducing manufacturing and assembling costs, and which also distributes and relieves the stresses of the flexing motion imparted to the discharge tube when the compressor vibrates in the housing, thereby reducing the possibility of failure of the connector tube support.
  • FIG. 1 is a side elevational view of a hermetic compressor incorporating the present invention, portions of the housing of the compressor being broken away to illustrate the motor-compressor unit mounted therein.
  • FIG. 2 is a horizontal sectional view taken on the line 2-2 of FIG. 1.
  • FIG. 3 is a fragmentary vertical section taken on the line 3-3 of FIG. 2, but on an enlarged scale.
  • FIG. 4 is a fragmentary sectional view taken on the line 44 of FIG. 3.
  • FIG. 5 is a fragmentary side elevational view of the discharge and connector tu-be joint illustrating the clip and bracket arrangement of the present invention.
  • FIG. 6 is a perspective view of the spring clip of the present invention shown by itself, on a still larger scale.
  • FIG. 1 illustrates a compressor 10 which, as in conventional hermetic compressor construction, comprises a housing 12 made up of lower half shell casing 14 and an upper half shell casing 16 respectively having circumferentially extending radial flanges 18 and 20 which are Welded together to hermetically seal the housing.
  • a conventional motor-compressor unit generally designated 22 is resiliently mounted within and in spaced relation from housing 12 and comprises an electric motor 24 which drives a twin cylinder piston compressor 26.
  • Unit 22 is resiliently supported by three spaced coil springs 28, only one of which is shown in FIG. 1, each mounted at its lower end on a bracket 30 secured to casing 14 and at its upper end to the crankcase-frame casting 32 of unit 22.
  • compressor 26 has a discharge mufller 34 the outlet of which is connected to the inlet end 36 (FIG. 2) of a discharge tube 38, usually made of welded steel tubing, adapted to conduct compressed refrigerant gas from the mufller to an external connection via a discharge connector tube 40 (FIGS. 2-5).
  • tube 38 extends vertically upwardly from its inlet end 36 toward the top wall 39 of casing 16 and is then bent to an angle of about 90 so as to extend horizontally in an oblong loop 38a (FIG. 2) around the headspace of casing 16 in spaced relation between casing 16 and the intake separator structure 42 mounted on the upper end of motor 24.
  • Loop 38a terminates near the inlet riser 36, where tube 38 is again bent 90 to extend downwardly to form an outlet portion 44-the lower end 46 of Which terminates approximately at the elevation of flanges 18 and 20 (FIG. 3).
  • Outlet end 44 of tube 38 has a telescopic interconnection with the upper, inlet end 48 of tube 40, which connection may consist of end 44 sliding within end 48 (as shown in FIG. 3), or vice versa, the two ends 44 and 48 being securely united and held in sealed relation at their telescopic interconnection by a silver soldered joint 50.
  • Connector tube 40 is generally L-shaped, inlet end 48 forming the longer riser of the L and the shorter riser 52 being disposed externally of housing 12 for suitable connection to the refrigeration equipment served by compressor unit 10.
  • the bight 54 of tube 40 extends through a circular opening '56 in the wall of casing 14 and carries a sealing flange 58 which abuts against the outer face of casing 14 and is securely fixed thereto by a silver solder joint 60 so that opening 56 is hermetically sealed.
  • riser 52 may be omitted and the external portion of tube 40 may extend horizontally or may have any other suitable configuration to satisfy external hook up requirements.
  • discharge tube 38 and tube 40 are provided with additional semi-resilient support means disposed bet-Ween the rigid connection 60 and the rigid connection of inlet end 36 with mufller 34.
  • This additional support means comprises a stamped sheet metal bracket 70 and a one piece spring wire clip 72 best seen in FIGS. 3-6 inclusive.
  • Bracket 70 has a pair of oppositely extending end portions 74 and 76 (FIGS. 4 and 5) formed to lie against the cylindrical inner surface 15 of casing 14 and is sesured to this surface by spot welds 78 and 80 (FIG. 5
  • bracket 70 is is corrugated to form a center portion 82 having a convex surface 84 contacting surface 15 at the center of the bracket and a concave surface 86 against which end 48 of tube 40 nests.
  • Portion 82 is flanked by a pair of crowns 88 and 90 having concave inner surfaces 92 and 94 respectively which are spaced from surface 15.
  • bracket 70 is preferably oriented with its lengthwise dimension parallel to flange 18 of casing 14 with its upper edge approximately one quarter of an inch below the top surface of flange 18. Crown 82 of bracket 70 is preferably disposed in vertical alignment with the center line of aperture 56, with the mid-point of the bracket being about three inches above the center of aperture 56. Bracket 70 thus supports tube 40 with riser 48 thereof parallel and spaced from surface 15, the upper end edge 96 of riser 48 being positioned about threeeighths of an inch above the upper surface of flange 18. It is to be understood that joint 50 may be disposed further above clip 72, for example by as much as about three inches in an arrangement scaled to the present disclosure without sacrificing the improved results of the present invention.
  • spring clip 72 preferably comprises a unitary piece of spring steel piano wire having a diameter of about one-sixteenth of an inch and a length of about 3.75 inches. This wire stock is bent to form a U-shaped bight portion 100 in the center of the wire which is adapted to extend horizontally (in the operative assembled position of clip 72 as shown in FIG. 3) around tube 40 so as to embrace the side of the tube remote from bracket 70.
  • Clip 72 has a pair of identical legs 102 and 104 respectively dependant one from each of the ends of bight 100.
  • Each arm 102 and 104 has a straight vertical portion 106 slightly longer than the vertical width dimension of bracket 70, a portion 108 bent toward bight 100 so as to curve away from surface 15, and a reversely bent portion 110 at the lower end of the leg which forms a smooth rounded protuberance adapted to bear slidably against surface 15 in the stressed condition of spring clip 72 when assembled as described hereinafter.
  • connector tube 40 is installed in casing 14 prior to installation of motorcompressor unit 22 therein, tube 40 being secured to casing 14 at joint 60 after bracket 70 has been spot welded to casing 14.
  • tube 40 is temporarily supported by clip 72 and bracket 70 prior to and during the silver soldering operation at joint 60. All that is required to so assemble tube 40 is to insert the riser end 48 from the exterior of the shell through aperture 56 and then turn the tube upright so that riser 48 lies against the center portion 82 of bracket 70.
  • Clip 72 is then inserted on bracket 70 by placing bight 100 against tube 48 and, with feet 110 disposed one above and in alignment with each of the spaces defined by the surfaces 92 and 94 of the bracket and surface 15 of the shell, as best seen in FIG.
  • bracket 70 engages bowed portion 108 of each leg and cams the same toward surface 15, resilient legs 102 and v 104- yieldably flexing and resisting this flattening deflection until portions 108 have cleared the bracket, whereupon portions 108 spring back to their position shown in FIG. 3.
  • straight portions 106 of the legs are pressed firmly against surfaces 92 and 94 of bracket 70 by the stresses developed in the deflection of feet 110 of the legs toward bight 100, thereby securely retaining clip 72 in the position shown in FIGS.
  • Clip 72 thus clamps tube 40 snugly against bracket 70, but due to the resilient nature of clip 72 a very slight deflection (in the order of a few thousandths of an inch) of the upper end 48 of tube 40 (to the left in the plane of the drawing as viewed in FIG. 3) can occur, clip 72 yielding and bending slightly to permit such deflection while resisting the same.
  • the assembly of compressor is completed by mounting motor compressor unit 22 on its spring suspension structure in casing 14, and then connecting the outlet end 44 of discharge tube 38 to the inlet end 48 tube 40 as described previously. Due to the disposition of the upper edge 96 of tube 40 above flange 18, the junction 50 of these tubes is readily accessible for the silver soldering operation. After this connection is made, the upper casing 16 is assembled on casing 14 and flanges 18 and 20 welded together to provide a hermetically sealed joint.
  • bracket 70 and spring clip 72 provides a simple, low cost assembly and mounting arrangement which eliminates the necessity of using the prior art arrangement of silver soldering the discharge connector tube 40 to a bracket on the casing.
  • spring clip 72 overcomes the problem of the prior art silver soldered joint (between tube 40 and a casing bracket) breaking as a result of the stress imposed on this joint when unit 22 was subjected to severe vibration within and relative to housing 12, as during shipment.
  • a discharge tube having an inlet at one end thereof connected to an outlet of said compressor unit, said discharge tube extending within said housing spaced from said unit and said housing and having an outlet at the end thereof opposite said inlet end, a discharge connector tube mounted on and extending through a wall of said housing and having an inlet end connected to said outlet end of said discharge tube at a point within said housing spaced from said wall thereof and support means secured to said housing and including a wire retainer having a bight portion at least partially embracing one of said tubes and yieldably clamping said tubes to said housing wall at a point between the connection of said discharge tube to said unit and the mounting of said connector tube on said wall.
  • a compressor having a motor-compressor unit resiliently suspended within a hermetic housing, the impnovement comprising a discharge tube having an inlet at one end thereof connected to an outlet of said compressor unit, said discharge tube extending within said housing spaced from said unit and said housing and having an outlet at the end thereof opposite said inlet end, a discharge connector tube mounted on and extending through a wall of said housing and having an inlet end connected to said outlet end of said discharge tube at a point within said housing spaced from said wall thereof and support means yieldably clamping said tubes to said housing wall at a point between the connection of said discharge tube to said unit and the mounting of said connector tube on said wall, said support means comprising a bracket disposed between said wall and said tubes, said bracket being fixed to said wall and having a portion spaced inwardly of said housing away from said wall, and a retainer having a first portion inserted in the space between said bracket portion and said wall and a second portion extending about and embracing one of said tubes to yieldably secure said one tube against said bracket.
  • a discharge tube having an inlet at one end thereof connected to an outlet of said compressor unit, said discharge tube extending within said housing spaced from said unit and said housing and having an outlet at the end thereof opposite said inlet end, a
  • said support means comprising a corrugated metal-bracket having a center portion with a convex surface facing said wall and a concave surface opposite said convex surface, two crowns flanking said center portion, each of said crowns having a concave surface facing said wall, and two extremities fixed to said wall, one of said tubes nesting in said concave center portion surface of said bracket, and a resilient retainer having a center U-shaped bight portion embracing said one tube and two legs with one of said legs dependent from one end of said bight portion and the other leg from the other end of the bight portion, one leg being inserted in the space between one of said crowns and the adjacent surface of said wall and the
  • each of said legs has a straight portion extending at right angles to bight portion a distance about equal to the dimension of said bracket parallel to said connector tube, said leg then being curved inwardly of said housing away from said wall and then curved outwardly of said housing toward said wall and terminating in a rounded foot portion bearing slidably against said wall, said spring wire being stressed when so mounted.
  • a discharge tube having an inlet at one end thereof connected to an outlet of said compressor unit, said discharge tube extending within said housing spaced from said unit and said housing and having an outlet at the end thereof opposite said inlet end, a discharge connector tube mounted on and extending through a wall of said housing and having an inlet end connected to said outlet end of said discharge tube at a point within said housing spaced from said wall thereof and support means yieldably clamping said tubes to said housing wall at a point between the connection of said discharge tube to said unit and the mounting of said connector tube on said wall, said housing having upper and lower casings joined at a circumferential seam and said connector tube being mounted in said lower casing and extending therethrough at a point spaced below said support means, said support means comprising a retainer and a bracket supporting said retainer with said bracket being disposed on said lower casing near said seam, said interconnection of said tubes being above said bracket near said seam.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
US751123A 1968-08-08 1968-08-08 Hermetic compressor discharge tube construction Expired - Lifetime US3531222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75112368A 1968-08-08 1968-08-08

Publications (1)

Publication Number Publication Date
US3531222A true US3531222A (en) 1970-09-29

Family

ID=25020577

Family Applications (1)

Application Number Title Priority Date Filing Date
US751123A Expired - Lifetime US3531222A (en) 1968-08-08 1968-08-08 Hermetic compressor discharge tube construction

Country Status (7)

Country Link
US (1) US3531222A (de)
BE (1) BE737204A (de)
DE (1) DE1939176A1 (de)
ES (1) ES370351A1 (de)
FR (1) FR2015314A1 (de)
GB (1) GB1237966A (de)
NL (1) NL6912038A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687019A (en) * 1970-04-24 1972-08-29 Tecumseh Products Co Hermetic compressor discharge tube joint construction
US3790308A (en) * 1971-09-14 1974-02-05 Danfoss As Spring suspension for mounting the motor compressor of a refrigerating machine in its case
US4370099A (en) * 1977-11-14 1983-01-25 Tecumseh Products Company Discharge gas temperature control
WO2011134728A1 (de) * 2010-04-26 2011-11-03 BSH Bosch und Siemens Hausgeräte GmbH Rohrhalter für ein rohr eines wärmetauschers
USD763233S1 (en) * 2014-11-26 2016-08-09 Amtran Technology Co., Ltd. Part of loudspeaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108347A (en) * 1936-12-07 1938-02-15 Bert L Quarnstrom Tubing clip
US2842218A (en) * 1955-11-14 1958-07-08 Int Harvester Co Motor vehicle tail pipe support means
US3082939A (en) * 1959-05-28 1963-03-26 Whirlpool Co Support for a motor-compressor unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108347A (en) * 1936-12-07 1938-02-15 Bert L Quarnstrom Tubing clip
US2842218A (en) * 1955-11-14 1958-07-08 Int Harvester Co Motor vehicle tail pipe support means
US3082939A (en) * 1959-05-28 1963-03-26 Whirlpool Co Support for a motor-compressor unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687019A (en) * 1970-04-24 1972-08-29 Tecumseh Products Co Hermetic compressor discharge tube joint construction
US3790308A (en) * 1971-09-14 1974-02-05 Danfoss As Spring suspension for mounting the motor compressor of a refrigerating machine in its case
US4370099A (en) * 1977-11-14 1983-01-25 Tecumseh Products Company Discharge gas temperature control
WO2011134728A1 (de) * 2010-04-26 2011-11-03 BSH Bosch und Siemens Hausgeräte GmbH Rohrhalter für ein rohr eines wärmetauschers
USD763233S1 (en) * 2014-11-26 2016-08-09 Amtran Technology Co., Ltd. Part of loudspeaker

Also Published As

Publication number Publication date
ES370351A1 (es) 1971-07-01
FR2015314A1 (de) 1970-04-24
GB1237966A (de) 1971-07-07
DE1939176A1 (de) 1970-02-19
NL6912038A (de) 1970-02-10
BE737204A (de) 1970-02-09

Similar Documents

Publication Publication Date Title
US4370104A (en) Suction muffler for refrigeration compressor
CN105402134B (zh) 一种挡油罩及具有所述挡油罩的涡旋压缩机
JPH06147127A (ja) タンデム式密閉型圧縮機
KR20090051185A (ko) 소형 냉장 시스템의 관형 연결부의 클램프
US3531222A (en) Hermetic compressor discharge tube construction
CN1007173B (zh) 用于小型冷冻机的往复活塞式压缩机
US4174189A (en) Refrigeration compressor suspension system
US20140286803A1 (en) Refrigeration compressor with flexible discharge conduit
US4427349A (en) Refrigeration compressor suspension system
JP2003148345A (ja) 密閉型往復動式圧縮機のコネクティングロッド装置
KR900002571B1 (ko) 냉동 시스템
US3215343A (en) Internal suspension for compressors
US3089639A (en) Structure for supporting a motor-compressor unit in a housing
US2365673A (en) Compressor
US3082939A (en) Support for a motor-compressor unit
US3540813A (en) Mounting support for hermetic motor compressors
CN112855545A (zh) 转子式压缩机
US3182902A (en) Refrigeration apparatus
US3849028A (en) Structure for supporting a motor-compressor unit in a housing
US6171077B1 (en) Suspension spring support for hermetic compressors
KR102266827B1 (ko) 공기 조화기
KR102217342B1 (ko) 리니어 압축기
US3441203A (en) Motor-compressor for an encapsulated refrigerating unit
JPH0752020B2 (ja) 圧縮機の支持装置
EP0558806A1 (de) Verdichtermotor für Kühlgeräte