WO2009135281A1 - Discharge valve arrangement for a hermetic compressor - Google Patents
Discharge valve arrangement for a hermetic compressor Download PDFInfo
- Publication number
- WO2009135281A1 WO2009135281A1 PCT/BR2009/000134 BR2009000134W WO2009135281A1 WO 2009135281 A1 WO2009135281 A1 WO 2009135281A1 BR 2009000134 W BR2009000134 W BR 2009000134W WO 2009135281 A1 WO2009135281 A1 WO 2009135281A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- discharge
- arrangement
- set forth
- vane
- discharge orifices
- Prior art date
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
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
Definitions
- the present invention ⁇ refers to a discharge valve arrangement for a hermetic compressor to be used in refrigeration systems, for example, in household refrigeration systems, such as refrigerators, freezers, water fountains, etc., or even in electronic equipment using compact compressors with reduced dimensions.
- the present invention is particularly applied to a hermetic compressor comprising a cylinder block defining a compression cylinder with an end closed by a valve plate provided with suction and discharge orifices contained within the inner contour of the axial projection of the compression cylinder.
- At least one suction orifice occupies an annular sector and is closed by a suction valve comprising a flexible suction vane that presents a mounting end portion, to be affixed to the valve plate, a bending median portion and a sealing end portion that is operatively associated with the suction orifice.
- the energetic efficiency of the small hermetic refrigeration compressors is mostly attributed to the good performance of the suction and discharge systems (which include suction and discharge orifices, respective suction and discharge valves, and the attenuating filter) of said compressors, particularly to the performance of the valves of said system in controlling the gas flow.
- Part of the energy losses in these compressors is caused by the load loss in the suction and discharge system thereof.
- solutions intended to reduce such losses actuate directly in the increase of the compressor efficiency.
- the usually carried out optimizations consist in reducing the losses by increasing the gas passage areas, as well as reducing the rigidity of the valves.
- One of the main restrictions imposed to the gas is found in the suction and discharge orifices.
- a known solution usually applied to commercial refrigeration and air conditioning uses more than one orifice for gas admission or exhaustion.
- the gas passage area can be increased without the collateral effects regarding increase of rigidity and eventual instabilities in the valve system.
- the known compressor applications that use multiple discharge orifices are those directed to the field of commercial refrigeration with high mass flow, such as the automotive or air conditioning industries, which usually employ large diameter pistons.
- the constructions with multiple orifices are rarely employed, mainly due to the considerable increase of dead volume, which is more harmful to the capacity and efficiency in these applications.
- the piston diameters are smaller and therefore less space is for positioning the valve system.
- the suction and discharge orifices usually present a circular cross section and are constructed in a valve plate generally made of steel.
- the geometrical shape of the suction valve and of the suction and discharge orifices forces the discharge orifice to be positioned eccentrically in relation to the axis of the center of the compression cylinder, being very close to the wall of said cylinder, so that the suction orifice may be also contained within the axial projection of the inner contour of the compression cylinder, maintaining a certain minimum spacing in relation to the discharge orifice.
- a discharge valve arrangement for a hermetic compressor to be used in refrigeration systems comprising: a cylinder block defining a compression cylinder; a valve plate closing an end of the compression cylinder and provided with suction and discharge orifices contained within the inner contour of the axial projection of the compression cylinder, at least one suction orifice occupying an annular sector—external to the axial projection, and a discharge orifice closed by a discharge valve comprising a flexible discharge vane, said suction orifice being closed by a suction valve comprising a flexible suction vane presenting: a mounting end portion to be affixed to the valve plate; a bending median portion; and a sealing end portion operatively associated with the suction orifice.
- the valve plate is provided with a plurality of discharge orifices that are distributed in at least one of the regions defined externally and internally to the contour of the flexible suction vane, each discharge orifice provided internally to the contour of the flexible suction vane being axially aligned with a respective through opening provided in the bending median portion of the flexible suction vane.
- the bending median portion of the flexible suction vane is provided with a through opening.
- a central discharge orifice aligned with the axis of the compression cylinder and having its axial projection internal to said through opening, and at least another discharge orifice having its axial projection disposed in the interior of the axial projection of the compression cylinder, in order to present the same flow restriction condition applied to the central orifice during the discharge operation of the compressor.
- the bending median portion of the flexible suction vane can be provided with a single discharge orifice having its axial projection contained in the interior of said through opening.
- the bending median portion of the flexible suction vane is provided with a through opening, any discharge orifice, whose axial projection is internal to the contour of the flexible suction vane, having its axial projection contained in the interior of said through opening.
- the flexible suction vane comprises a plurality of through openings, each containing, therewithin, the axial projection of a respective discharge orifice.
- the present solution further presents at least another discharge orifice external to the contour of the suction vane.
- a plurality of flexible discharge vane portions each presenting a respective sealing end selectively closing at least one discharge orifice, and a respective mounting end to be affixed to the valve plate, the mounting ends of the flexible discharge vanes being defined in a single common piece, from which project the sealing ends of said flexible discharge vanes.
- the flexible suction vane comprises a plurality of through openings, each containing, therewithin, the axial projection of a respective discharge orifice provided in the valve plate.
- Figure 1 represents, schematically, a plan view of a valve plate when observed from the side of the compression cylinder, illustrating a flexible suction vane and the suction and discharge orifices constructed according to the prior art;
- Figure 2 represents, schematically and as illustrated in figure 1, a plan view of a valve plate presenting an arrangement of suction and discharge orifices of the present invention, in which the axial projection of one of the discharge orifices is disposed internally to a through opening provided in the flexible suction vane and the axial projection of another discharge orifice is disposed externally to the contour of the flexible suction vane/
- Figure 3 represents, schematically and as illustrated in figure 2, a plan view of a valve plate presenting an arrangement of suction and discharge orifices of the present invention, in which the axial projection of one of the discharge orifices is disposed internally to a through opening provided in the flexible suction vane and the axial projection of other two discharge orifices is disposed externally to the contour of the flexible suction vane, symmetrically to the orifice whose projection is internal to the through opening, said discharge orifices presenting the same cross section;
- Figure 4 represents, schematically and as illustrated in figure 3, a plan view of a valve plate
- Figure 8 represents, schematically, another constructive variant for the third arrangement of suction and discharge orifices illustrated in figure 6, in which the discharge orifices present distinct cross sections;
- Figure 9 represents, schematically, a perspective view of a valve plate, when observed from the opposite side of the compression cylinder and illustrating a constructive form of discharge valve carrying flexible discharge vanes, each associated with a respective discharge orifice;
- Figure 10 represents, schematically, a perspective view of the valve plate illustrated in figure 9, when observed from the opposite side of the compression cylinder and deprived of the valve system.
- a hermetic compressor of refrigeration systems to be applied, for example, in household refrigeration systems and comprising, in the interior of a non-illustrated casing, a motor-compressor assembly (not illustrated) including a cylinder block defining a compression cylinder 1 inside which is housed a reciprocating piston 2, which draws and compresses the refrigerant gas when driven by an electric motor of the motor-compressor assembly.
- the compression cylinder 1 and the reciprocating piston 2 have a reduced diameter, which restricts the space to provide and arrange the suction and discharge valves.
- the compression cylinder 1 has an end closed by a valve plate 10 affixed to the cylinder block and provided with suction orifices 11 and discharge orifices 12.
- a compression chamber (not illustrated)
- suction valves 20 and the discharge valves 30 are constructed in the form of a flexible vane, as described ahead.
- the valve plate 10 presents a discharge orifice 12 internal to an axial projection 40 of the inner contour of the compression cylinder 1, and a suction orifice 11 provided internal to said axial projection 40 and external to the contour of the discharge orifice 12, so as to maintain, from the latter, a certain minimum radial spacing, which is calculated to form a wall thickness that is able to adequately press a sealing joint (not illustrated) , in order to avoid undue escape of gas from the high pressure side towards the low pressure side.
- any one of the suction and discharge orifices 11, 12 may have a respective axial projection that is central or substantially central to the axial projection 40 of the compression cylinder 1.
- the suction orifice 11 is disposed so as to be external to the axial projection of any discharge orifice 12.
- the discharge orifice 12 is circular and coaxial to the inner contour of the compression cylinder 1 and the suction orifice 11 is in the form of an annular sector, substantially concentric to at least one of the inner contours of the compression cylinder 1 and of the discharge orifice 12. This construction is disclosed in patent EP1301711.
- the valve plate 10 secures, on its face turned to the interior of the compression cylinder 1, a suction valve 20, in the form of a flexible suction vane 21, presenting: a mounting end portion 22, to be affixed to the valve plate 10; a bending median portion 23; and a sealing end portion 24 operatively associated with the suction orifice 11 and which is displaceable, by elastic deformation, between a closed valve position, blocking the suction orifice 11, and an open valve position, releasing said suction orifice 11, said flexible suction vane 21 having at least its sealing end portion 24 and bending median portion 23 situated within the axial projection 40 of the inner contour of the compression cylinder 1.
- the flexible suction vane 21 presents, in its bending median portion 23, a through opening 25, inside which lies the axial projection of the contour of a central discharge orifice 12 concentric to the axis of the compression cylinder 1.
- centralizing the discharge orifice 12 lies in the fact that the compressed gas discharge process occurs while the piston is very close to the upper dead point of the mechanism.
- the centralization of the discharge orifice 12 reduces the pressure differentials along the compression cylinder 1, during the period in which the compressed gas is discharged through the discharge valve 30.
- the reduction of said pressure differentials results, directly, in less energy dissipation during the compression process, thereby providing more energetic efficiency to the compressor.
- the valve plate 10 is provided with a plurality of discharge orifices 12 distributed in at least one of the regions defined externally and internally to the contour of the flexible suction vane 21, each discharge orifice 12 provided internally to the contour of the flexible suction vane 21 being axially aligned with a respective through opening 25 provided in the bending median portion 23 of the flexible suction vane 21.
- the arrangement of the present invention further comprises a discharge valve 30 formed by a plurality of flexible discharge vanes 31, each operatively associated with at least one discharge orifice 12 and presenting a respective mounting end 32, to be affixed to the valve plate 10, a bending median region 33 and a respective sealing end 34 which selectively closes at least one discharge orifice 12.
- the mounting ends 32 of the flexible discharge vanes 31 are defined in a single common piece, from which project the bending median region 33 and the sealing end 34 of each said flexible discharge vane 31.
- the discharge valve presents a flexible discharge vane 31 provided with a mounting end 32, a bending medium region 33, and a sealing end 34 which closes the discharge orifices 12 disposed aligned to each other and orthogonal to the axis of the flexible discharge vane 31.
- each flexible discharge vane 31 may define a discharge valve which is independent from the other discharge valves, each flexible discharge vane 31 being affixed to the valve plate 10 by the respective mounting end 32.
- the sealing end 34 of each flexible discharge vane 31 may selectively close one or more discharge orifices 12.
- any discharge orifice 12, whose axial projection is internal to the contour of the flexible suction vane 21, has its axial projection contained in the interior of said through opening 25.
- the arrangement of the present invention comprises a single discharge orifice 12 having its axial projection contained in the interior of the through opening 25, said arrangement further comprising at least another discharge orifice 12 having its respective axial projection eccentric and external to the outer contour of the bending portion 23 of the flexible suction vane 21.
- the discharge orifice 12 with the axial projection internal to said through opening 25 is, for example, provided centralized and/or aligned with the axis of the compression cylinder 1.
- these may be defined to present the same or a similar flow restriction condition during the discharge operation of the compressor.
- the flow restriction condition among the discharge orifices 12 may be independent for each discharge orifice.
- FIG. 1 it is illustrated a single discharge orifice 12 having its axial projection contained in the interior of the through opening 25 and, external to the latter, other two discharge orifices 12, each having its respective axial projection eccentric and external to the outer contour of the bending portion 23 of the flexible suction vane 21, said other two discharge orifices being particularly disposed symmetrically to the axis of the compression cylinder 1 and orthogonally to the axis of the flexible suction vane 21.
- other discharge orifices 12, provided in the valve plate 10 will be external to the contour of the flexible suction vane 21.
- the discharge orifices 12 are disposed in the valve plate 10, so that each discharge orifice 12 is subject to the same flow restriction applied by the flexible discharge vane 31, during its opening operation.
- said other two discharge orifices 12 are disposed in an alignment containing the central discharge orifice 12, said alignment being orthogonal to the axis of the flexible discharge vane 31, said two other discharge orifices 12 being symmetric in relation to said axis.
- the central discharge orifice 12 and the other two discharge orifices 12 present the same cross- sectional area, although this construction is not always mandatory. It should be understood that, although the illustrated constructions present the discharge orifices 12 with circular contour, other constructions presenting elliptical contour or other preferred form are possible, within the concept presented herein.
- Each discharge orifice 12 may be optimized in an independent form in relation to the others, this optimization being defined by the independent dimensioning of each discharge orifice 12, calculated as a function of the flow restriction condition that said discharge orifice 12 should present.
- the discharge orifices 12 may be disposed in alignments orthogonal or parallel to the axis of the flexible suction vane 21, inside or outside the through opening 25 in the latter, said alignments including or not a central discharge orifice 12 concentric to the axis of the compression cylinder 1.
- the discharge orifices 12 of the present invention may be equally shaped and dimensioned so as to maintain from each other, for example, at minimum a similar flow restriction condition, upon movement of the respective flexible discharge vane 31.
- the possible variations of distribution of the discharge orifices 12 are defined, for each project, as a function of the intended result. In a constructive option, all the discharge orifices 12 present, at minimum, a similar flow restriction condition, during the compressor discharge operation, or present flow restriction conditions independently calculated for each discharge orifice 12.
- the discharge orifices 12 are selectively closed by a discharge valve 30 comprising three flexible discharge vanes 31, each having the respective sealing end 34 operatively associated with a respective discharge orifice 12, said flexible discharge vanes 31 having the mounting ends 32 joined to each other in a single piece that is affixed in the valve plate 10.
- the discharge orifices 12 can be concentrically distributed around a central discharge orifice 12 and spaced therefrom so as to maintain the same flow restriction condition applied to the central discharge orifice 12, during the discharge operation of the compressor.
- the discharge orifices 12 present variations in at least one of the characteristics of cross-sectional area and distance in relation to the central discharge orifice 12.
- the discharge orifices 12 present variations in at least one of the characteristics of cross- sectional area and diameter in relation to the movement of a corresponding portion of discharge valve 30.
- the flexible suction vane 21 comprises a plurality of through openings 25, each containing, in its interior, the axial projection of a respective discharge orifice 12.
- a discharge orifice 12 can be provided, for example, centralized and particularly aligned with the axis of the compression cylinder 1, at least another discharge orifice 21 having its axial projection internal to the contour of the flexible suction vane 21.
- the flexible suction vane 21 is provided with three through openings 25, each aligned with the axial projection of a respective discharge orifice 12, said through openings 25 being aligned to each other and orthogonally to the axis of the flexible suction vane 21.
- the discharge orifices 12 can be dimensioned and positioned to each other, and in relation to the flexible suction vane 21, so that each discharge orifice 12 is subject to the same flow restriction applied by the flexible discharge vane 31, during its opening operation, although this arrangement is not mandatory.
- one of the through openings 25 is provided aligned with the axis of the flexible suction vane 21.
- all the other discharge orifices 12 present the same cross-sectional area, although this conformation is not mandatory, as described for the embodiments illustrated in figures 2 to 4. It should be understood that this construction also allows the provision of at least another discharge orifice 12 having its axial projection external to the contour of the flexible suction vane 21, it being possible to arrange said discharge orifices 12 so that all of them are subject to the same flow restriction applied by the flexible discharge vane 31, during the opening operation thereof.
- the discharge orifices 12 are disposed in an alignment which contains the central discharge orifice 12 and which is orthogonal to the axis of the flexible discharge vane 31, the discharge orifices 12, other than the central one, being symmetrically arranged in relation to said axis and said central discharge orifice 12.
- the discharge valve 30 can be of the type which comprises a respective flexible discharge vane 31 for each discharge orifice 12, and each flexible discharge vane 31 can also be operatively associated with a plurality of discharge orifices 12 aligned with the axis of the flexible discharge vane 31.
- the arrangement of the present invention comprises only discharge orifices 12 having their axial projections positioned externally to the contour of the flexible suction vane 21, one of said discharge orifices 12 being, for example, centralized and the other discharge orifices 12 being disposed so as to be subject to the same flow restriction condition applied by the flexible discharge vane 31, during its opening operation.
- the other discharge orifices 12 are disposed in an alignment which contains the central discharge orifice 12 and which is orthogonal to the axis of the flexible discharge vane 31, said discharge orifices 12 being symmetric in relation to said axis.
- the central discharge orifice 12 and the other discharge orifices 12 present the same cross- sectional area.
- Figures 9 and 10 illustrate a constructive form of the valve plate 10, in which the discharge orifices 12 are provided in a body portion of the valve plate 10 which is lowered from a front face of the latter, in opposition to that face turned to the compression cylinder 1, said recess being calculated to house the flexible discharge vanes 31 mounted to said valve plate 10.
- the arrangement of the present invention allows the provision of multiple discharge orifices in hermetic compressors of household refrigeration systems, leading to more efficiency and reduction of dead volume in said refrigeration compressor, by facilitating the gas flow from inside the compression cylinder 1 to the multiple discharge orifices 12.
- the discharge orifice 12 internal to the through opening 25 is not exactly centralized in relation to the axis of the compression cylinder 1, the possibility of providing multiple discharge orifices 12 for a construction of suction valve 20 of the type described herein already results in a significant improvement in the discharge efficiency, further allowing multiple discharge orifices 12 to be provided in different alignments and with different cross-sections for hermetic refrigeration compressors.
- the physical positioning of the protrusions should naturally follow the relative positioning of the discharge orifices 12 in the valve plate 10, whilst the conformation of the protrusions and respective discharge orifices 12 may follow only one pattern among the known patterns, or present different conformation patterns for matching a frusto-conical profile with a cylindrical orifice and vice-versa, depending on the positioning of the protrusion in the contour of the compression chamber, aiming at reducing the dead volume, without impairing the discharge flow of the refrigerant gas compressed in the interior of the compression chamber.
- multiple discharge orifices 12 also permits using smaller thicknesses for the discharge valve 30 (since smaller discharge orifices 12 impose smaller stresses to the valve) , resulting in more freedom to optimize the rigidity and natural frequency of the flexible discharge vane 31 of the discharge valve 30.
- the discharge orifices 12 present reduced dimensions in relation to the single discharge orifice 12 of the prior art, the forces required to open the discharge valve 30 are smaller, softening said opening.
- the presence of multiple discharge orifices 12 enables the use of a smaller maximum opening of the discharge valve 30, since multiple discharge orifices 12 increase the gas flow area, which is proportional to the diameter of the discharge orifice 12 versus opening height of the discharge valve 30.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980124114.4A CN102119275B (en) | 2008-05-08 | 2009-05-08 | Discharge valve arrangement for a hermetic compressor |
EP09741607A EP2304236A1 (en) | 2008-05-08 | 2009-05-08 | Discharge valve arrangement for a hermetic compressor |
JP2011507763A JP2011520059A (en) | 2008-05-08 | 2009-05-08 | Discharge valve device for hermetic compressor |
US12/736,743 US20110103937A1 (en) | 2008-05-08 | 2009-05-08 | Discharge valve arrangement for a hermetic compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0801970-3A BRPI0801970A2 (en) | 2008-05-08 | 2008-05-08 | discharge valve arrangement for airtight compressor |
BRPI0801970-3 | 2008-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009135281A1 true WO2009135281A1 (en) | 2009-11-12 |
Family
ID=40911972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2009/000134 WO2009135281A1 (en) | 2008-05-08 | 2009-05-08 | Discharge valve arrangement for a hermetic compressor |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110103937A1 (en) |
EP (1) | EP2304236A1 (en) |
JP (1) | JP2011520059A (en) |
KR (1) | KR20110013444A (en) |
CN (1) | CN102119275B (en) |
BR (1) | BRPI0801970A2 (en) |
WO (1) | WO2009135281A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102251951A (en) * | 2010-05-20 | 2011-11-23 | 扎努西电气机械天津压缩机有限公司 | Snifter valve block of refrigerator compressor |
EP3171025A1 (en) * | 2015-11-19 | 2017-05-24 | Whirlpool S.A. | Constructive disposition in reciprocating compressor suction valve |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8959906B2 (en) * | 2011-06-22 | 2015-02-24 | Fluke Corporation | Gas boosters |
CN104047836B (en) * | 2014-06-11 | 2016-09-28 | 安徽华晶机械股份有限公司 | Two grades of Reed Valves of air compressor |
BR202015029126U2 (en) * | 2015-11-19 | 2017-05-23 | Whirlpool Sa | constructive arrangement introduced in reciprocating compressor suction valve |
CN109185100B (en) * | 2018-09-09 | 2019-07-30 | 合肥安信瑞德精密制造有限公司 | A kind of Snifter valve block of refrigerator compressor |
KR20200034454A (en) * | 2018-09-21 | 2020-03-31 | 삼성전자주식회사 | A compressor and electronic device using the same |
KR102386648B1 (en) | 2020-10-12 | 2022-04-14 | 엘지전자 주식회사 | Enclosed compressor |
KR20240071890A (en) | 2022-11-16 | 2024-05-23 | 엘지전자 주식회사 | Compressor |
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US3241748A (en) * | 1964-07-27 | 1966-03-22 | Carrier Corp | Hermetic motor compressor unit |
EP1002951A2 (en) * | 1998-11-20 | 2000-05-24 | Arctic Circle Limited | A reed for use in a valve assembly |
US6102680A (en) * | 1998-07-01 | 2000-08-15 | Carrier Corporation | Suction valve with release timing chamber |
US20040228742A1 (en) * | 2000-07-17 | 2004-11-18 | Empresa Brasileira De Compressores S.A. - Embraco | Suction and discharge valve arrangement for a small hermetic compressor |
US20060096647A1 (en) * | 2002-10-09 | 2006-05-11 | Empresa Brasileira De Compressores S.A.-Embraco | Suction valve for a small hermetic compressor |
WO2008047515A1 (en) * | 2006-09-27 | 2008-04-24 | Panasonic Corporation | Compressor |
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US2725183A (en) * | 1951-01-10 | 1955-11-29 | Carrier Corp | Valves for reciprocating compressors |
US3751005A (en) * | 1971-11-30 | 1973-08-07 | Westinghouse Electric Corp | Powdered metal valve plate assembly |
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KR960002111Y1 (en) * | 1991-05-06 | 1996-03-14 | 삼성전자 주식회사 | Discharge valve device of compressor |
GB9715742D0 (en) * | 1997-07-26 | 1997-10-01 | Knorr Bremse Systeme | Gas compressors |
JP2000345966A (en) * | 1999-06-01 | 2000-12-12 | Sanden Corp | Compressor |
US7004734B2 (en) * | 1999-12-28 | 2006-02-28 | Zexel Valco Climate Control Corporation | Reciprocating refrigerant compressor |
US7390176B2 (en) * | 2001-10-05 | 2008-06-24 | Carrier Corporation | Multi-port suction reed valve with optimized tips |
US6832900B2 (en) * | 2003-01-08 | 2004-12-21 | Thomas Industries Inc. | Piston mounting and balancing system |
US6896495B2 (en) * | 2003-05-22 | 2005-05-24 | Bristol Compressors, Inc. | Cylinder head and valve plate assembly for reciprocating compressor |
-
2008
- 2008-05-08 BR BRPI0801970-3A patent/BRPI0801970A2/en not_active IP Right Cessation
-
2009
- 2009-05-08 JP JP2011507763A patent/JP2011520059A/en not_active Withdrawn
- 2009-05-08 KR KR1020107027252A patent/KR20110013444A/en not_active Application Discontinuation
- 2009-05-08 US US12/736,743 patent/US20110103937A1/en not_active Abandoned
- 2009-05-08 EP EP09741607A patent/EP2304236A1/en not_active Withdrawn
- 2009-05-08 WO PCT/BR2009/000134 patent/WO2009135281A1/en active Application Filing
- 2009-05-08 CN CN200980124114.4A patent/CN102119275B/en not_active Expired - Fee Related
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US3241748A (en) * | 1964-07-27 | 1966-03-22 | Carrier Corp | Hermetic motor compressor unit |
US6102680A (en) * | 1998-07-01 | 2000-08-15 | Carrier Corporation | Suction valve with release timing chamber |
EP1002951A2 (en) * | 1998-11-20 | 2000-05-24 | Arctic Circle Limited | A reed for use in a valve assembly |
US20040228742A1 (en) * | 2000-07-17 | 2004-11-18 | Empresa Brasileira De Compressores S.A. - Embraco | Suction and discharge valve arrangement for a small hermetic compressor |
US20060096647A1 (en) * | 2002-10-09 | 2006-05-11 | Empresa Brasileira De Compressores S.A.-Embraco | Suction valve for a small hermetic compressor |
WO2008047515A1 (en) * | 2006-09-27 | 2008-04-24 | Panasonic Corporation | Compressor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102251951A (en) * | 2010-05-20 | 2011-11-23 | 扎努西电气机械天津压缩机有限公司 | Snifter valve block of refrigerator compressor |
EP3171025A1 (en) * | 2015-11-19 | 2017-05-24 | Whirlpool S.A. | Constructive disposition in reciprocating compressor suction valve |
Also Published As
Publication number | Publication date |
---|---|
BRPI0801970A2 (en) | 2010-01-12 |
US20110103937A1 (en) | 2011-05-05 |
EP2304236A1 (en) | 2011-04-06 |
CN102119275B (en) | 2014-05-07 |
JP2011520059A (en) | 2011-07-14 |
CN102119275A (en) | 2011-07-06 |
KR20110013444A (en) | 2011-02-09 |
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