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WO2000011348A1 - Compresseur hermetique et procede de fabrication associe - Google Patents

Compresseur hermetique et procede de fabrication associe Download PDF

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Publication number
WO2000011348A1
WO2000011348A1 PCT/JP1998/003684 JP9803684W WO0011348A1 WO 2000011348 A1 WO2000011348 A1 WO 2000011348A1 JP 9803684 W JP9803684 W JP 9803684W WO 0011348 A1 WO0011348 A1 WO 0011348A1
Authority
WO
WIPO (PCT)
Prior art keywords
projection
cases
recess
suction muffler
hermetic compressor
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.)
Ceased
Application number
PCT/JP1998/003684
Other languages
English (en)
Inventor
Terumasa Ide
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Refrigeration 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 Matsushita Refrigeration Co filed Critical Matsushita Refrigeration Co
Priority to PCT/JP1998/003684 priority Critical patent/WO2000011348A1/fr
Publication of WO2000011348A1 publication Critical patent/WO2000011348A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0609—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding characterised by the movement of the parts to be joined
    • B29C65/0618—Linear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0609—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding characterised by the movement of the parts to be joined
    • B29C65/0636—Orbital
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
    • B29C66/9513—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration frequency values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7496—Pumps

Definitions

  • the present invention relates to a hermetic compressor for use with a refrigerating apparatus that uses a refrigerant for electrical refrigerators, air conditioners, etc. and a method for manufacturing the hermetic compressor.
  • HFC hydro-fluorocarbon
  • HC hydrocarbon
  • FIG. 8 is a top view of a structure of the conventional hermetic compressor.
  • a closed vessel 101 is shown in a cross sectional view. Inside the closed vessel 101 are housed a compressing unit 102 and an electric unit 103.
  • the compressing unit 102 and the electric unit 103 are elastically supported to the closed vessel 101.
  • the compressing unit 102 has: a cylinder 104; a piston 105 that makes a reciprocating motion in the cylinder 104; a valve plate 106 attached to the compressing unit 102 so as to block an opening of the cylinder 104; and a cylinder head 107.
  • a suction muffler 108 is attached to the cylinder head 107 of the compressing unit 102.
  • This suction muffler 108 is composed of two synthetic resin cases welded by supersonic-welding.
  • a suction tube 109 is attached to the closed vessel 101 so as to pass it through. This suction tube as an intake tube 109 guides a refrigerant gas into the closed vessel 101.
  • a refrigerant gas flown from the low pressure side of a refrigerating cycle is guided into the closed vessel 101 via the intake tube 109, then guided into the cylinder 104 via the suction muffler 108.
  • the refrigerant gas led into the cylinder 104 is then compressed by the piston 105.
  • the non-contact portion between the two cases is not welded enough, leaving some portions as non-welded portions.
  • a part of the portion to be welded generates a gap, so that much oil seeps into the suction muffler through the gap and compressed in the compressing unit 102.
  • the compressed oil then causes valves to be damaged.
  • the compressed oil also circulates and stays in the vaporizer, thereby to cause a refrigerating failure.
  • the conventional hermetic compressor has also confronted with a problem that the cases of the suction muffler 108 are removed during an operation due to an insufficient strength of the welding junction between the cases, causing emission of an abnormal sound.
  • a vibration welding method is adopted to weld junctions of plural divided cases of the synthetic resin suction muffler.
  • each welding portion of the suction muffler is fused uniformly all along the periphery without generating any gap between the cases.
  • the welding strength is increased much significantly.
  • junctions of the suction muffler are welded by vibration under pressing.
  • a pressure is applied to those junctions before welding so that every welding portion is in contact with the other side welding portion all along the periphery.
  • the contact faces are fused with a frictional heat generated therebetween by vibration. The method can thus prevent generation of non- contact portions.
  • a projection and a recess while are formed in complementary relation press-fit with a gap therebetween. Then, the projection and the recess are welded by vibration as described above. Even when any burr is generated in this case, the fused resin stays in the gap, so that no burr falls inside and outside the suction muffler.
  • the hermetic compressor of the present invention comprises : a compressing unit supported elastically in a closed vessel; an electric unit supported elastically in said closed vessel and used for driving said compressing unit; and a suction muffler attached to said compressing unit and having plural synthetic resin cases welded actually in uniform at fused portions using a vibration welding method.
  • the method for manufacturing the hermetic compressor of the present invention comprises: a- step for pressing welding faces of two resin cases of the suction muffler, facing each other, in the directions opposite to each other; a step for vibrating the welding faces in the direction substantially parallel to each welding face while performing the pressing step; and a step for ending the vibrating step, thereby ceasing the welding faces of the cases.
  • the welding portion of the case is fused uniformly and compactly all along the periphery without producing any hole or opening, so that the welding strength can be increased more significantly.
  • FIG. 1 is a top view of an inner configuration of a hermetic compressor in the first and second embodiments of the present invention
  • FIG. 2 is a side view of an inner configuration of the hermetic compressor in the first and second embodiments of the present invention
  • FIG. 3 is an exploded side view of a suction muffler in the first embodiment of the present invention
  • FIG. 4 is a cross sectional view of an expanded portion A shown in FIG. 3;
  • FIG. 5 is an exploded side view of the suction muffler in the second embodiment of the present invention.
  • FIG. 6 is a cross sectional view of an expanded portion B shown in FIG. 5;
  • FIG. 7 is a cross sectional view of an expanded major portion of the suction muffler shown in FIG. 6 after it is welded;
  • FIG. 8 is the top view of the inner configuration of the conventional hermetic compressor.
  • FIG. 1 is a top view of a hermetic compressor in the first embodiment of the present invention.
  • FIG. 2 is a side view of the hermetic compressor shown in FIG. 1.
  • a closed vessel 1 is shown in a cross sectional view.
  • a compressing unit 2 and an electric unit 3 are elastically supported by a spring 3a in the closed vessel 1.
  • the compressing unit 2 has: a cylinder 4; a piston 5 that makes a reciprocating motion in the cylinder 4; a valve plate 6 attached to the cylinder so as to block an opening of the cylinder 4; and a cylinder head 7.
  • a suction muffler 8 is attached to the cylinder head 7 of the compressing unit 2, and this suction muffler 8 is configured by two synthetic resin cases welded by friction heat of vibration, that is a vibration welding method.
  • An intake tube 9 (FIG. 1) is attached to the closed vessel 1 so as to pass through the closed vessel 1. This intake tube leads a refrigerant gas into the closed vessel 1.
  • FIG. 3 is an exploded side view of the front side of the suction muffler 8 in the hermetic compressor in the first embodiment of the present invention.
  • FIG. 4 is an expanded view of the "A" portion shown in FIG. 3, indicating a cross sectional view of the suction muffler shown in FIG. 3 in a welding process.
  • the suction muffler 8 comprises the first case 10 and the second case 11. Both the first and second cases 10 and 11 are injection-molded with polybutylene terphthalate (hereafter, to be abbreviated as PBT). A flange 12 is formed on the first case 10 and a flange 14 is formed on the second case 11. A frame 11a for holding the suction muffler 8 is provided at a lower position of the second case 11.
  • PBT polybutylene terphthalate
  • the flange 12 of the first case 10 has a joint face 13 facing the second case 11.
  • the flange 14 of the second case 11 has a joint face 15 facing the first case 10.
  • the flange 12 of the first case 10 is disposed so as to engage with a plate 16A attached to a pressing device (not shown) and the second case 11 is held by a rest 16B of the pressing device.
  • the suction muffler 8 is used in the hermetic compressor in the first embodiment constructed as described above.
  • the first and second cases 10 and 11 of the suction muffler 8 are mounted in the pressing device.
  • the plate 16A is engaged with the flange 12 and the rest 16B is engaged with the flange 14.
  • the first and second cases 10 and 11 mounted in the pressing device such way are pressed by the plate 16A and the rest 16B in the directions opposite to each other. Consequently, the flange 12 of the first (upper half) case 10 is pressed by the plate 16A from the direction at right angles to the joint face.
  • the flange 14 of the second (lower half) case 11 is pressed by the rest 16B in the direction at right angles to the joint face 15. Consequently, even when any of the joint faces 13 and 15 is warped, the first and second cases 10 and 11 are deformed elastically, so that the joint faces 13 and 15 come in contact with each other completely all along the periphery.
  • each of the joint faces 13 and 15 is fused with a frictional heat generated therebetween.
  • a preferred vibration welding is performed with vibrations within a frequency of 240Hz.
  • the fused portions on each of the joint faces 13 and 15 solidify and the joint faces 13 and 15 stick to each other.
  • the first and second cases are welded evenly and formed integral .
  • the welding time is almost fixed at any portions on the joint faces 13 and 15 of the suction muffler 8.
  • the joint faces 13 and 15 are thus welded all along their peripheries almost in evenly. Consequently, the suction muffler 8 of the hermetic compressor in the first embodiment can secure air-tightness and welding strength satisfactorily.
  • vibration is generally applied in a linear reciprocating direction in parallel to each joint face.
  • vibration is another vibration welding method, which is called an orbital vibration method.
  • the vibration orbital is trailed almost like an ellipse.
  • This orbital welding method can obtain a longer orbital of the vibration with a smaller amplitude when compared with the linear vibration welding method.
  • the orbital vibration welding method can thus reduce joint faces, so it has an effect to reduce the size of the suction muffler 8 in its external view.
  • the configuration of the hermetic compressor in the second embodiment is substantially the same as that in the first embodiment except for the suction muffler 80.
  • FIG. 5 is a side view of the exploded suction muffler used in the hermetic compressor in the second embodiment of the present invention.
  • FIG. 6 is an expanded cross section view of the suction muffler shown in FIG. 6 after the welding process is ended.
  • the suction muffler 80 is comprises the first and second cases 17 and 18.
  • the first and second cases 17 and 18 are injection-molded with PBT.
  • a flange 19 is formed on the first case 17 and a flange 23 is formed on the second case 18.
  • a frame 18a for holding the suction muffler 80 is provided at a lower position of the second case 18.
  • a projection 20 is formed on the first case 17, at a portion facing the second case 18.
  • a tip face 21 and a contact face 22 are formed to face the second case 18.
  • a flange 23 is formed on the second case 18.
  • a recess 24 is formed to face the first case 17.
  • a bottom face 25 so as to face the tip face 21 of the first case 17 and an edge face 26 so as to face the contact face 22 of the first case 17.
  • the height value "h” of the projection 20 is greater than the depth value "d" of the recess 24 (h>d).
  • the projection 20 of the first case 17 and the recess 24 of the second case 18 are formed so as to face each other all along the peripheries of the edges of the cases 17 and 18.
  • a gap is formed between the projection 20 and the recess 24 to have a length of an amplitude of the vibration welding or over.
  • the projection 20 is thus floatingly fit in the recess 24.
  • the width "tl" of the tip face of the projection 20 is formed narrower than the width "t2" of the bottom face 25 of the recess 24 (tl ⁇ t2).
  • a numeral 27 indicates a gap formed between the projection 20 and the recess 24.
  • a numeral 28 indicates an end portion of fusion of the projection 20 having a height, which is equal to a difference (h-d) between the height h and the depth d of the recess 24.
  • the volume of the fusion end portion is V.
  • the space volume W of the gap formed between the projection 20 and the recess 24 is set larger than the volume V of the fusion end portion 28 of the projection 20 (W>V).
  • the flange 19 of the first case 17 is disposed so as to engage with the plate 29 attached to the pressing device (not shown).
  • the second case 18 is held by the rest 30 of the pressing device.
  • the suction muffler 80 is used in the hermetic compressor in the second embodiment composed as described above.
  • the first and second cases 17 and 18 of the suction muffler 80 are mounted in the pressing device.
  • the plate 29 is engaged with the flange 19 and the rest 30 is engaged with the flange 23.
  • the first and second cases 17 and 18 mounted in the pressing device such way are pressed by the plate 29 and the rest 30 in the directions opposite to each other. Consequently, the flange 19 of the first case 17 is pressed by the plate 29 from the direction at right angles to the tip face 21, which is a joint face.
  • the flange 23 of the second case 18 is pressed by the rest 30 in the direction at right angles to the bottom face, which is a joint face. Consequently, even when any of the tip face 21 and the bottom face 25 is warped, the first and second cases 10 and 11 are deformed elastically and thereby the tip face 21 and the bottom face 25 come in contact with each other all along the periphery.
  • the fused end portion 28 of the projection 20 is solidified.
  • the first and second cases 17 and 18 thus stick to each other.
  • FIG. 7 is an expanded cross sectional view of the first and second cases of the suction muffler 80, fastened to each other, using the vibration welding method as described above.
  • burr is formed at a fused portion of the fusing end 28 of the resin projection 20.
  • the tip face 21 of the projection 20 and the bottom face 25 of the recess 24 are fused in a welding process for the suction muffler 80 with a frictional heat generated between them 21 and 25 that are in contact with each other. And, this fused resin burr 31 is received in the gap 27.
  • the welding is ended when the contact face 22 of the first case 17 comes in contact with the edge face 26 of the second case 18 and thereby the gap becomes almost zero.
  • the volume of the burr 31 fused at this time is equal to the fused portion 28 of the projection 20. Since the volume of the fused burr 31 is smaller than the space volume of the gap 27, the fused burr 31 falls into the space of the gap 27 completely. Consequently, the burr 31 never falls inside and outside of the suction muffler 80.
  • junction faces of the suction muffler are welded in uniform and no gap is generated between junction faces, it is possible to obtain a highly reliable hermetic compressor in which proper air- ightness and welding strength are secured at junction faces of the suction muffler, as well as to obtain a method for manufacturing such the hermetic compressor.
  • a hermetic compressor of the present invention is used for a refrigerating apparatus that uses a refrigerant for electrical refrigerators, air conditioners and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne un compresseur hermétique comprenant un silencieux d'aspiration qui présente une soudure à haute résistance sans la présence de bavure. On applique une pression sur les faces de joints des premier et second compartiments du silencieux d'aspiration, en résine synthétique, placées l'une en face de l'autre de manière à former un angle droit entre les faces. Ces faces jointes sont alors mises en vibration dans une direction parallèle audit joint de façon à générer une chaleur de friction qui provoque la soudure des faces.
PCT/JP1998/003684 1998-08-19 1998-08-19 Compresseur hermetique et procede de fabrication associe Ceased WO2000011348A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/003684 WO2000011348A1 (fr) 1998-08-19 1998-08-19 Compresseur hermetique et procede de fabrication associe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/003684 WO2000011348A1 (fr) 1998-08-19 1998-08-19 Compresseur hermetique et procede de fabrication associe

Publications (1)

Publication Number Publication Date
WO2000011348A1 true WO2000011348A1 (fr) 2000-03-02

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Family Applications (1)

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Country Status (1)

Country Link
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943917A (ja) * 1982-09-02 1984-03-12 Sanyo Electric Co Ltd 圧縮機の吸込マフラ製造方法
US4874062A (en) * 1987-09-07 1989-10-17 Kojima Press Industry Co., Ltd. Muffler
JPH0345212A (ja) 1989-07-12 1991-02-26 Sanyo Electric Co Ltd ショーケース
DE3645083C2 (en) * 1986-07-09 1991-08-08 Danfoss A/S, Nordborg, Dk Sound dampener for use in refrigeration compressor
US5201640A (en) * 1991-05-28 1993-04-13 Empresa Brasileira De Compressores S/A -Embraco Suction muffler assembly for hermetic compressors
EP0667270A2 (fr) * 1994-02-15 1995-08-16 Wabco Automotive U.K. Limited Dispositif composé pour système de fluide de véhicules et procédé de fabrication
JPH07266425A (ja) * 1994-03-30 1995-10-17 Aisin Seiki Co Ltd 樹脂製部品
JPH1080952A (ja) * 1996-09-09 1998-03-31 Mikuni Corp 樹脂製部材の結合構造

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943917A (ja) * 1982-09-02 1984-03-12 Sanyo Electric Co Ltd 圧縮機の吸込マフラ製造方法
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