EP2165076A2 - Compresseur - Google Patents

Compresseur

Info

Publication number
EP2165076A2
EP2165076A2 EP09702998A EP09702998A EP2165076A2 EP 2165076 A2 EP2165076 A2 EP 2165076A2 EP 09702998 A EP09702998 A EP 09702998A EP 09702998 A EP09702998 A EP 09702998A EP 2165076 A2 EP2165076 A2 EP 2165076A2
Authority
EP
European Patent Office
Prior art keywords
suction hole
communicating tube
refrigerant gas
suction
protrusion
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Withdrawn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
EP09702998A
Other languages
German (de)
English (en)
Inventor
Hidenori Kobayashi
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 Corp
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of EP2165076A2 publication Critical patent/EP2165076A2/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Withdrawn legal-status Critical Current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
    • F04B39/0027—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
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates

Definitions

  • the present invention relates to compressors used in refrigerating appliances and the like.
  • a conventional compressor of this type used in refrigerating appliances and the like is intended to improve the efficiency by providing an inhalation pathway between a communicating tube of a suction muffler and a suction hole of a valve plate (see Patent Document 1, for example).
  • a conventional hermetic compressor is described below with reference to the drawings.
  • Fig. 10 is a vertical cross-sectional view of the conventional compressor disclosed in Patent Document 1
  • Fig. 11 is an enlarged sectional view of a main portion of the conventional compressor
  • Fig. 12 is an enlarged view of the main portion of the conventional compressor.
  • hermetic container 1 contains oil 2
  • compression element 5 driven by electrical motor 4 is housed within hermetic container 1.
  • Compression element 5 is provided with cylinder 9 in which piston 8 connected to shaft 7 via con rod 6 moves reciprocatingly therein.
  • Compression element 5 is further provided with valve plate 12 disposed at an open end of cylinder 9 and having suction hole 10 and inhalation pathway 11 that are communicated with cylinder 9, as well as with suction muffler 13.
  • Suction muffler 13 is provided with muffling space 14 and communicating tube 15 that is communicated with inhalation pathway 11.
  • the refrigerant gas After released within muffling space 14, the refrigerant gas is intermittently suctioned into cylinder 9 through communicating tube 15 and suction hole 10.
  • the refrigerant gas suctioned into cylinder 9 is compressed by piston 8, and discharged back into the external cooling circuit (not shown).
  • the refrigerant gas smoothly moves from communicating tube 15 to suction hole 10 through inhalation pathway 11. This makes a suction resistance of the refrigerant gas low, and, as a result, suction mass of the refrigerant gas per unit time (refrigerant circulation volume) becomes greater and workload per unit time increases. Consequently, this improves the efficiency of the compressor.
  • a compressor according to the present invention includes: a hermetic container that contains lubricant oil therein; an electrical motor; and a compression element that is driven by the electrical motor and compresses refrigerant gas, the electrical motor and the compression element being housed within the hermetic container.
  • the compression element includes: a cylinder that defines a compression chamber; a valve plate that seals an end of the cylinder and is provided with a suction hole; a suction lead that opens and closes the suction hole; a suction muffler that defines a muffling space and is provided with a communicating tube; and a cylinder head.
  • the communicating tube is provided with a communicating tube outlet that is communicated with the suction hole, and is disposed so as to extend in a vertical direction to a center axial of the suction hole.
  • the communicating tube outlet is provided with a protrusion that protrudes toward a direction in which the refrigerant gas flows with respect to a projection of the suction hole in a direction of the center axial of the suction hole, and the valve plate facing toward the protrusion is provided with an inhalation pathway that directs the refrigerant gas to the suction hole, thereby reducing a flow resistance of the refrigerant gas.
  • Fig. 1 is a vertical cross-sectional view of a compressor of embodiment 1 according to the present invention.
  • Fig. 2 is a plane cross-sectional view of the compressor of embodiment 1 according to the present invention.
  • Fig. 3 is an exploded perspective view of a component attached to an open end portion of a cylinder in embodiment 1 according to the present invention.
  • Fig. 4 is an elevational view of a suction muffler in embodiment 1 according to the present invention.
  • Fig.5 is a vertical cross-sectional view of the suction muffler in embodiment 1 according to the present invention.
  • Fig.6 is a cross-sectional view taken along line 6A-6A of Fig. 4.
  • Fig.7 is an elevational view of a valve plate viewed from a side of the suction muffler in embodiment 1 according to the present invention.
  • Fig.8 is an elevational view of the valve plate viewed from a side of the cylinder in embodiment 1 according to the present invention.
  • Fig. 9 is a cross-sectional view taken along line 9A-9A of Fig. 7.
  • Fig. 10 is a vertical cross-sectional view of a conventional compressor.
  • Fig.11 is an enlarged cross-sectional view of a main portion of the conventional compressor.
  • Fig.12 is an enlarged view of the main portion of the conventional compressor.
  • Fig. 1 is a vertical cross-sectional view of a compressor of embodiment 1 according to the present invention
  • Fig. 2 is a top cross-sectional view of the compressor of the same embodiment
  • Fig. 3 is an exploded perspective view of a component attached to an open end portion of a cylinder in the same embodiment.
  • Fig. 4 is an elevational view of a suction muffler in the same embodiment
  • Fig. 5 is a vertical cross-sectional view of the suction muffler in the same embodiment
  • Fig. 6 is a cross-sectional view taken along line 6A-6A of Fig. 4
  • Fig. 7 is an elevational view of a valve plate viewed from a side of the suction muffler in the same embodiment
  • Fig. 1 is a vertical cross-sectional view of a compressor of embodiment 1 according to the present invention
  • Fig. 2 is a top cross-sectional view of the compressor of the same embodiment
  • Fig. 3 is an exploded perspective view of a
  • hermetic container 101 contains lubricant oil 102 and compression element 105 driven by electrical motor 104 therein.
  • Compression element 105 is provided with cylinder 107 that defines compression chamber 106, piston 108, shaft 109, con rod 110, valve plate 112 that seals an end of cylinder 107 and is provided with suction hole 111, suction lead 114 that opens and closes suction hole 111, suction muffler 116, and cylinder head 118 that defines a discharge space (not shown).
  • Piston 108 is reciprocatingly slidably housed within cylinder 107, and connected to shaft 109 by con rod 110. A lower tip end of shaft 109 is soaked in lubricant oil 102, and an oil feeding mechanism (not shown) for feeding lubricant oil 102 to each sliding portion of compression element 105 is provided.
  • Suction muffler 116 is made of a resin such as PBT, and is provided with suction hole 119, muffling space 120, and communicating tube 122.
  • Communicating tube 122 includes communicating tube outlet 124 that is communicated with suction hole 111, and is positioned so as to extend along center axis 140 that lies vertically with respect to center axis 126 of suction hole 111.
  • Communicating tube outlet 124 is provided with protrusion 128 that protrudes toward a direction in which the refrigerant gas flows (direction along center axis 140) with respect to a projection of suction hole 111, in a direction of center axis 126 of suction hole 111.
  • valve plate 112 will be described with reference to Fig. 7 through Fig. 9.
  • Valve plate 112 is made of material such as sintered metal, for example, and includes inhalation pathway 132 that is directed toward suction hole 111 from an end of communicating tube outlet 124 of valve plate 112. Inhalation pathway 132 is provided for valve plate 112 at a position facing toward protrusion 128 of suction muffler 116. Further, inhalation pathway 132 is defined by inclination 143 and curvature 130 as a circular arc whose radius is about 2 mm. Further, suction hole 111 in a planar shape is noncircular, and communicating tube outlet 124 of suction muffler 116 has substantially the same shape as suction hole 111, other than protrusion 128, in the projection along axial core 126 of suction hole 111.
  • suction hole 111 in the planar shape here defines an opening that is noncircular and enclosed by a plurality of circular arcs.
  • the noncircular shape of the opening of suction hole 111 in valve plate 112 has a predetermined length and is substantially the same shape along the direction of axial core 126.
  • a long side of suction hole 111 in the planar shape is about 14 mm, which is longer than 8 mm, an opening length vertical to a direction in which communicating tube 122 of suction muffler 116 extends. Accordingly, the opening length becomes longer when the refrigerant gas is suctioned from communicating tube outlet 124 to suction hole 111 through communicating tube 122.
  • protrusion 128 of suction muffler 116 protrudes toward the direction in which the refrigerant gas flows, defines a circular arc whose radius is about 4 mm in the projection along center axis 126 of suction hole 111.
  • cross-section 141 of an opening portion of protrusion 128 in a plane vertical to the direction in which communicating tube 122 of suction muffler 116 extends is substantially quadrangular with about 8 mm square, which is almost the same as cross-section 142 of communicating tube 122.
  • second inhalation pathway 136 defined by second curvature 134 which is a circular arc whose radius is about 2 mm, is provided on an opposite side of protrusion 128 with respect to suction hole 111.
  • the refrigerant gas suctioned into suction muffler 116 is then, after released into muffling space 120, suctioned into cylinder 107 through communicating tube 122 and suction hole 111.
  • the refrigerant gas suctioned into cylinder 107 is compressed by piston 108, and discharged back into the external cooling circuit (not shown) via the discharge space (not shown) of cylinder head 118.
  • communicating tube outlet 124 that is communicated with suction hole 111 is provided with protrusion 128, and inhalation pathway 132 that directs the refrigerant gas to suction hole 111 is provided for valve plate 112 that faces toward protrusion 128.
  • inhalation pathway 132 is provided with curvature 130 that is directed toward suction hole 111 from an end face of valve plate 112 on a side of communicating tube outlet 124.
  • suction hole 111 noncircular can reduce a circumferential stress as a tensile stress produced, during compression operation, at a portion of suction lead 114 that is in contact with suction hole 111. With this, it is possible to reduce damages such as a crack in suction lead 114, and a compressor with high reliability can be realized.
  • communicating tube outlet 124 substantially the same as the shape of suction hole 111, there is no suction resistance that inhibits the flow of the refrigerant gas from communicating tube outlet 124 to suction hole 111 other than protrusion 128, and the flow of the refrigerant gas does not stagnate.
  • a high efficiency compressor with a smooth refrigerant gas flow from communicating tube 122 to suction hole 111 can be realized.
  • suction hole 111 makes the opening length of suction hole 111 longer than the opening length vertical to the direction in which communicating tube 122 of suction muffler 116 extends increases a space through which the refrigerant gas flows from communicating tube 122 to suction hole 111 smoothly. With this, the flow resistance of the refrigerant gas that is suctioned can be still reduced. Further, protrusion 128 of suction muffler 116 protrudes toward the direction in which the refrigerant gas flows, defining the circular arc in the projection along center axis 126 of suction hole 111.
  • cross-section 141 of an opening portion of protrusion 128 along a plane vertical to the direction in which communicating tube 122 of suction muffler 116 extends is substantially the same as cross-section 142 of communicating tube 122.
  • valve plate 112 is provided with second inhalation pathway 136 defined by second curvature 134 and second inclination 145, on an opposite side of inhalation pathway 132 with respect to suction hole 111.
  • second inhalation pathway 136 defined by second curvature 134 and second inclination 145, on an opposite side of inhalation pathway 132 with respect to suction hole 111.
  • the compressor according to the present invention includes a hermetic container that contains lubricant oil therein; an electrical motor; and a compression element that is driven by the electrical motor and compresses refrigerant gas, the electrical motor and the compression element being housed within the hermetic container.
  • the compression element includes a cylinder that defines a compression chamber; a valve plate that seals an end of the cylinder and is provided with a suction hole; a suction lead that opens and closes the suction hole; a suction muffler that defines a muffling space and is provided with a communicating tube; and a cylinder head.
  • the communicating tube is provided with a communicating tube outlet that is communicated with the suction hole, and being disposed so as to extend in a vertical direction to the center axis of the suction hole.
  • the compressor according to the present invention may be configured such that the communicating tube outlet is provided with a protrusion that protrudes toward a direction in which the refrigerant gas flows rather than a direction of the suction hole in a projection along a direction of the axial core of the suction hole, and the valve plate facing toward the protrusion is provided with a inhalation pathway that directs the refrigerant gas to the suction hole, thereby reducing a flow resistance of the refrigerant gas.
  • the communicating tube outlet is provided with a protrusion that protrudes toward a direction in which the refrigerant gas flows rather than a direction of the suction hole in a projection along a direction of the axial core of the suction hole
  • the valve plate facing toward the protrusion is provided with a inhalation pathway that directs the refrigerant gas to the suction hole, thereby reducing a flow resistance of the refrigerant gas.
  • the inhalation pathway can be defined by one of an inclination and a curvature that is directed toward the suction hole from an end of the valve plate on a side of the communicating tube outlet.
  • the shape of the suction hole may be noncircular, and the shape of the communicating tube outlet may be substantially the same as the shape of the suction hole, other than the protrusion in the projection along the direction of the center axis of the suction hole.
  • making the shape of the suction hole noncircular can reduce the circumferential stress as the tensile stress produced, during compression operation, at the portion of the suction lead that is in contact with the suction hole. Accordingly, in addition to the advantages of the increased refrigerant circulation volume and the increased workload per unit time, it is further possible to reduce damages such as a crack in the suction lead, and a compressor with high reliability can be realized. Further, by making the shape of the communicating tube outlet substantially the same as the suction hole, there is no flow resistance that inhibits the flow of the refrigerant gas from the communicating tube outlet to the suction hole other than the protrusion, and the flow of the refrigerant gas does not stagnant.
  • an opening length of the suction hole may be longer than an opening length vertical to the direction along which the communicating tube extends. With such a configuration, the space through which the refrigerant gas flows from the communicating tube to the suction hole smoothly increases. With this, in addition to the above-described advantages, it is further possible to reduce the flow resistance of the refrigerant gas that is further suctioned, and a compressor with high efficiency can be realized. Further, the shape of the protrusion may be circular.
  • a cross-sectional shape of the opening portion of the protrusion along a plane vertical to the direction along which the communicating tube extends may be substantially the same as the cross-sectional shape of the communicating tube.
  • the compressor according to the present invention may be configured such that the valve plate is provided, at a portion opposite to the protrusion with respect to the suction hole, with a second inhalation pathway directing the refrigerant gas to the suction hole, and the second inhalation pathway is defined by one of a second inclination and a second curvature that is directed toward the suction hole from an end of the valve plate on a side of the communicating tube outlet.
  • the refrigerant gas flows smoothly from the communicating tube outlet to the suction hole through the second inhalation pathway, preventing the flow of the refrigerant gas from being separated.
  • the present invention it is possible to realize a high efficiency compressor with increased refrigerant circulation volume and workload per unit time.
  • application of the compressor according to the present invention is useful for other purposes such as large scale refrigerating devices for air-conditioning and industrial use as well as common refrigerating devices.

Landscapes

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

Abstract

Un compresseur selon la présente invention peut réduire une résistance à l'écoulement d'un gaz réfrigérant de par la formation, au niveau d'une sortie de tube de communication d'un silencieux d'aspiration, d'une partie saillante qui fait saillie dans une direction vers laquelle le gaz réfrigérant s'écoule plutôt que dans une direction d'un trou d'aspiration (111) dans une plaque porte-soupape (112), et de par la formation d'un chemin d'aspiration (132) dans la plaque porte-soupape (112). Ceci augmente une masse d'aspiration de réfrigérant par unité de temps (volume de circulation de réfrigérant) et une charge de travail par unité de temps, et ainsi il est possible d'obtenir un compresseur à haut rendement.
EP09702998A 2008-01-17 2009-01-06 Compresseur Withdrawn EP2165076A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008007715 2008-01-17
PCT/JP2009/000008 WO2009090856A2 (fr) 2008-01-17 2009-01-06 Compresseur

Publications (1)

Publication Number Publication Date
EP2165076A2 true EP2165076A2 (fr) 2010-03-24

Family

ID=40885742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09702998A Withdrawn EP2165076A2 (fr) 2008-01-17 2009-01-06 Compresseur

Country Status (4)

Country Link
EP (1) EP2165076A2 (fr)
JP (1) JP4968343B2 (fr)
CN (1) CN101743402A (fr)
WO (1) WO2009090856A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG185556A1 (en) 2010-05-24 2012-12-28 Whirlpool Sa Suction arrangement for a refrigeration compressor
CN104619987B (zh) 2012-09-13 2018-01-12 艾默生环境优化技术有限公司 具有引导吸入部的压缩机组件
CN104603461B (zh) * 2012-12-13 2017-03-01 松下知识产权经营株式会社 密闭型压缩机和制冷装置
CN105587598B (zh) * 2014-11-10 2019-08-13 Lg电子株式会社 往复式压缩机
CN108194325B (zh) * 2017-12-28 2019-11-26 芜湖欧宝机电有限公司 高效低噪活塞式压缩机阀板的制造方法
US11236748B2 (en) 2019-03-29 2022-02-01 Emerson Climate Technologies, Inc. Compressor having directed suction
US11767838B2 (en) 2019-06-14 2023-09-26 Copeland Lp Compressor having suction fitting
US11248605B1 (en) 2020-07-28 2022-02-15 Emerson Climate Technologies, Inc. Compressor having shell fitting
US11619228B2 (en) 2021-01-27 2023-04-04 Emerson Climate Technologies, Inc. Compressor having directed suction
WO2022203598A1 (fr) * 2021-03-22 2022-09-29 Panasonic Appliances Refrigeration Devices Singapore Compresseur hermétique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620550Y2 (fr) * 1976-06-28 1981-05-15
DE19923734C2 (de) * 1999-05-22 2001-03-29 Danfoss Compressors Gmbh Saugschalldämpfer für einen hermetisch gekapselten Verdichter
KR100368843B1 (ko) * 1999-06-24 2003-01-24 삼성광주전자 주식회사 밀폐형 압축기의 밸브장치
BR0003292A (pt) * 2000-07-17 2002-02-26 Brasil Compressores S A Arranjo de válvulas de sucção e de descarga para compressor hermético de pequeno porte
JP2004137927A (ja) * 2002-10-16 2004-05-13 Matsushita Refrig Co Ltd 密閉型圧縮機
KR20050059494A (ko) * 2003-12-15 2005-06-21 삼성광주전자 주식회사 밀폐형 압축기
CN100473829C (zh) * 2004-10-04 2009-04-01 阿塞里克股份有限公司 压缩机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009090856A3 *

Also Published As

Publication number Publication date
JP2010529342A (ja) 2010-08-26
WO2009090856A3 (fr) 2009-10-15
WO2009090856A2 (fr) 2009-07-23
JP4968343B2 (ja) 2012-07-04
CN101743402A (zh) 2010-06-16

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