EP1119730A1 - Compresseurs a simple et double extremite - Google Patents

Compresseurs a simple et double extremite

Info

Publication number
EP1119730A1
EP1119730A1 EP99947122A EP99947122A EP1119730A1 EP 1119730 A1 EP1119730 A1 EP 1119730A1 EP 99947122 A EP99947122 A EP 99947122A EP 99947122 A EP99947122 A EP 99947122A EP 1119730 A1 EP1119730 A1 EP 1119730A1
Authority
EP
European Patent Office
Prior art keywords
piston
refrigerant
oil
armature
barrel
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Withdrawn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
EP99947122A
Other languages
German (de)
English (en)
Inventor
Isaac Dimanstein
Russell Hunt
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.)
Airxcel Inc
Original Assignee
Airxcel Inc
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
Priority claimed from AUPP6050A external-priority patent/AUPP605098A0/en
Priority claimed from AUPP9355A external-priority patent/AUPP935599A0/en
Application filed by Airxcel Inc filed Critical Airxcel Inc
Publication of EP1119730A1 publication Critical patent/EP1119730A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F04B39/02—Lubrication
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids

Definitions

  • This invention relates to linear refrigerant compressors and more particularly to the oiling of such compressors including double-ended linear compressors.
  • a linear refrigerant compressor consists of an armature with a piston attached to it and a barrel where the refrigerant gas is compressed by the piston.
  • the armature moves backward and forward in a linear motion. The energy associated with this movement is transferred to the body of the compressor.
  • a single-ended linear refrigerant compressor comprising a body, an electrical winding, an armature driven by the winding, a refrigerant chamber or barrel and a piston carried by the armature that is driven forward and backward in the barrel to compress refrigerant and wherein the body has an oil sump and at least one oil slinger adapted to splash oil from the sump to the barrel and piston.
  • a double-ended linear refrigerant compressor comprising a housing defining a pair of opposed bodies each having an electrical winding, an armature driven by the winding, a refrigerant chamber or barrel and a piston carried by the armature that is driven forward and backward in the barrel to compress refrigerant therein and wherein the housing has an oil sump and at least one oil slinger adapted to splash oil from the sump towards each barrel and piston.
  • the or each oil slinger is mounted on the armature.
  • a plurality of oil slingers are spaced evenly around the periphery of each armature.
  • each piston has an inlet port for the refrigerant and in order to minimise oil loss, the piston inlet may be covered by a cap having a plurality of passageways around its periphery disposed at an angle to the line of movement of the piston.
  • Fig. 1 is a cross-sectional view of a single-ended refrigerant compressor according to the prior art
  • Fig. 2 is a cross-sectional view of a double-ended refrigerant compressor according to the prior art
  • Fig. 3 is a cross-sectional view of a double-ended refrigerant compressor according to one embodiment of the invention
  • Fig. 4 is a view taken along lines A-A of Fig. 3
  • Fig. 5 is a view similar to Fig. 3 of another embodiment of the invention
  • Fig. 6 is a view taken along lines B-B of Fig. 4
  • Fig. 7 is an enlarged view of one piston of the double-ended refrigerant compressor shown in Fig. 3 which has a modified cap
  • Fig. 8 is an enlarged front end view of the cap shown in Fig. 7
  • Fig. 9 is an enlarged side view of the cap shown in Fig. 7.
  • the prior art single-ended refrigerant compressor 10 shown in Fig. 1 includes a body 11 that has an electrical winding 12 that drives an armature 13 in a reciprocating manner.
  • a piston 14 carried by the armature 13 is driven backwards and forwards in the chamber or barrel 15 compressing refrigerant gas during its forward stroke.
  • the double-ended compressor 20 shown in Fig. 2 consists of opposed single-ended compressors 10, 10a which have a body 11 , 11a, an electrical winding 12, 12a, an armature 13, 13a, piston 14, 14a, barrel 15, 15a, sump 17, 17a and oil 16 and 16a.
  • the armatures 13 and 13a are driven by the windings 12 and 12a with the same amplitude but in opposite direction with the end result that the total energy transferred to the bodies 11 and 11a is almost zero and thus there is little, if any, vibration of the double-ended compressor 20 as a whole.
  • the double-ended refrigerant compressor 30 shown in Figs. 3 and 4 is substantially similar to that shown in Fig. 2 except that a plurality of oil paddles or slingers 31 are mounted around the periphery 32 of the armatures 13 and 13a.
  • the slingers 31 are long enough to pass through the sump 17 and 17a to splash the oil around the bodies 11 and 11a and onto the pistons 14 and 14a and barrels 15 and 15a to lubricate them.
  • this embodiment of the invention provides two slingers 31 in the sump 17 and 17a at the one time but this need not be so.
  • a single slinger 31 can be used.
  • the shape and configuration of the or each slinger 31 is determined according to operational requirements for the lubrications of the compressor.
  • the compressor shown in Figs. 5 and 6 is substantially similar to that shown in Figs. 3 and 4 and thus the same numerals are used for the same components.
  • the embodiment of the invention shown in Figs 5 and 6 has been devised to address a problem that can arise in relation to oil leaving the compressor. Refrigerant flow is in the direction of arrows R.
  • Part of the oil 16 stirred up by the slingers 31 can enter the inlet port 40 of the pistons 14 and 14a and then pumped via the inlet and outlet valves from the compressor into the system. This can lead to a situation where a large part of the oil is pumped out of the compressor resulting in poor lubrication of the piston and barrel.
  • the inlet ports 40 are provided with a cap 41 that has a plurality of passageways or gas inlet ports 42 around its perimeter that are directed at angles of 90° to the line of movement of the pistons 14 and 14a.
  • the purpose of the holes 42 is to allow the refrigerant to enter the suction ports 40 but to prevent or at least hinder the oil 16 entering the inlet ports 40.
  • the holes are, in this instance, approximately 1 to 2mm in diameter.
  • the cap 50 shown in Figs. 7 to 9 has an end portion 51 and a skirt portion 52 which engages the end of the piston 14 with has inlet ports 53 spaced around the end of the skirt portion 52 allowing gas to enter the suction port 40. Ribs 54 around the interior of the skirt portion 52 between the inlet ports 53 provide a press fit of the cap 50 onto the piston 14 when the cap 50 is pressed up against the piston-supporting collar 55 carried by the armature 13.
  • each oil slinger could be mounted on the spring that is positioned between the armature and the barrel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Cette invention se rapporte à un compresseur de réfrigérant à double extrémité (30) qui est constitué par une paire de compresseurs opposés (10a) comportant chacun un piston creux (14, 14a) mû par une armature (13, 13a) sous l'action de bobines électriques (12, 12a) de façon à comprimer le réfrigérant dans les chambres (15, 15a). Les armatures (13, 13a) comportent des déflecteurs d'huile (31) destinés à projeter l'huile du carter d'huile (17, 17a) vers les pistons (14, 14a) et vers les chambres (15, 15a). Un obturateur (41) peut être adapté sur l'extrémité d'entrée des pistons (14, 14a) pour réduire les pertes d'huile au minimum.
EP99947122A 1998-09-21 1999-09-21 Compresseurs a simple et double extremite Withdrawn EP1119730A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AUPP6050A AUPP605098A0 (en) 1998-09-21 1998-09-21 Double-ended compressors
AUPP605098 1998-09-21
AUPP9355A AUPP935599A0 (en) 1999-03-19 1999-03-19 Double-ended compressors
AUPP935599 1999-03-19
PCT/AU1999/000797 WO2000017585A1 (fr) 1998-09-21 1999-09-21 Compresseurs a simple et double extremite

Publications (1)

Publication Number Publication Date
EP1119730A1 true EP1119730A1 (fr) 2001-08-01

Family

ID=25645877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99947122A Withdrawn EP1119730A1 (fr) 1998-09-21 1999-09-21 Compresseurs a simple et double extremite

Country Status (4)

Country Link
EP (1) EP1119730A1 (fr)
CN (1) CN1319173A (fr)
CA (1) CA2344852A1 (fr)
WO (1) WO2000017585A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442384B1 (ko) * 2001-10-23 2004-07-30 엘지전자 주식회사 대향형 왕복동식 압축기의 윤활유 공급 장치
KR100531830B1 (ko) * 2003-12-29 2005-12-02 엘지전자 주식회사 왕복동식 압축기
ITCO20120027A1 (it) 2012-05-16 2013-11-17 Nuovo Pignone Srl Attuatore elettromagnetico e dispositivo di conservazione d¿inerzia per un compressore alternativo
ITCO20120028A1 (it) * 2012-05-16 2013-11-17 Nuovo Pignone Srl Attuatore elettromagnetico per un compressore alternativo

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270560A (ja) * 1995-03-31 1996-10-15 Iwata Air Compressor Mfg Co Ltd 給油式往復圧縮機の連接棒
JPH08284832A (ja) * 1995-04-10 1996-10-29 Matsushita Refrig Co Ltd 振動式圧縮機
JP2823526B2 (ja) * 1995-05-19 1998-11-11 三洋電機株式会社 ガス圧縮膨張機の軸受への潤滑油供給装置
JPH11210623A (ja) * 1998-01-30 1999-08-03 Tokico Ltd 空気圧縮機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0017585A1 *

Also Published As

Publication number Publication date
CA2344852A1 (fr) 2000-03-30
CN1319173A (zh) 2001-10-24
WO2000017585A1 (fr) 2000-03-30

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