WO2015000524A1 - Ensemble d'étanchéité pour compresseur hermétique alternatif - Google Patents

Ensemble d'étanchéité pour compresseur hermétique alternatif Download PDF

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Publication number
WO2015000524A1
WO2015000524A1 PCT/EP2013/064206 EP2013064206W WO2015000524A1 WO 2015000524 A1 WO2015000524 A1 WO 2015000524A1 EP 2013064206 W EP2013064206 W EP 2013064206W WO 2015000524 A1 WO2015000524 A1 WO 2015000524A1
Authority
WO
WIPO (PCT)
Prior art keywords
closed
sealing member
valve plate
groove
sealing
Prior art date
Application number
PCT/EP2013/064206
Other languages
English (en)
Inventor
Sarper Marasli
Cihan Gunduz
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP13733019.7A priority Critical patent/EP3017195A1/fr
Priority to PCT/EP2013/064206 priority patent/WO2015000524A1/fr
Publication of WO2015000524A1 publication Critical patent/WO2015000524A1/fr

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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
    • F04B39/1066—Valve plates

Definitions

  • the present invention relates to a sealing assembly for use in a reciprocating compressor to seal a refrigerant flow path between a cylinder block and a cylinder head, and a refrigeration appliance in particular a domestic refrigerator, having the sealing assembly.
  • a refrigeration appliance such as a domestic refrigerator typically utilizes a reciprocating hermetic compressor to convey the refrigerant from an evaporator to a condenser.
  • the reciprocating hermetic compressor generally comprises a compression chamber, an intake chamber, and a discharge chamber.
  • the intake chamber is on a downstream side of evaporator.
  • the discharge chamber is on an upstream side of the condenser.
  • the compression chamber is formed within the cylinder block whereas the intake chamber and the discharge chamber are separately formed within the cylinder head.
  • a valve plate (5 ⁇ ) is interposed between the cylinder block and the cylinder head (Figs. 6 and 7).
  • the valve plate (5 ⁇ ) generally comprises an intake port (12 ⁇ ) and a discharge port (13 ⁇ ) (Figs. 6 and 7).
  • the intake port (12 ⁇ ) fluidly connects the intake chamber with the compression chamber upon suction of a piston located in the compression chamber.
  • the discharge port (13 ⁇ ) fluidly connects the compression chamber with the discharge chamber upon compression of the piston.
  • the refrigerant pressure in the vicinity of the valve plate (5 ⁇ ) is relatively high due to the reciprocating movement of the piston.
  • valve plate (5 ⁇ ) and the cylinder parts such as the cylinder block and the cylinder head, must be sufficiently gas-tight to prevent any leakage of the refrigerant. It is common practice to place head gaskets (6 ⁇ ,8 ⁇ ) on both sides of the valve plate (5 ⁇ ), which respectively oppose the cylinder block and the cylinder head (Figs. 8 and 9).
  • US 5,609,476 discloses a reciprocating compressor which includes: a valve plate arranged between a cylinder block and a cylinder head, a first head gasket arranged between the valve plate and the cylinder block and a second head gasket arranged between the valve plate and the cylinder head.
  • Head gaskets (6 ⁇ ,8 ⁇ ) used in reciprocating compressors are typically made of paper. They are cheap and easy to fabricate. However, such paper gaskets (6 ⁇ ,8 ⁇ ) have certain drawbacks. For instance, in case of unexpected high refrigerant pressures, the paper gaskets (6 ⁇ ,8 ⁇ ) are torn off. Consequently, the refrigerant begins to leak and the cooling efficiency gradually decreases. Hence, maintenance becomes inevitable.
  • the strength of a head gasket (6 ⁇ ,8 ⁇ ) can be increased by alternatively manufacturing the same from metal.
  • Metal gaskets are very robust and durable.
  • the surface of a metal gasket must be sufficiently flat to prevent leakage. In practice, a small degree of surface roughness or any warpage of a metal gasket may result in a leakage of the refrigerant.
  • An objective of the present invention is to provide a sealing assembly for a reciprocating compressor, and a refrigeration appliance having the same, which overcomes the aforementioned problems, and enables effective sealing of the refrigerant flow path between the cylinder block and the cylinder head.
  • a first groove is provided along one or more closed-contours on a rear surface of the valve plate, for receiving a base portion of a first sealing member such that an upper portion thereof projects out of the first groove
  • a second groove is provided along one or more closed-contours on a front surface of the valve plate, for receiving a base portion of a second sealing member such that an upper portion thereof projects out of the second groove
  • the first sealing member is made from a resilient material and is provided in form of one or more closed-loops which respectively match the first groove along said one or more closed-contours on the rear surface of the valve plate
  • the second sealing member is made from a resilient material and is provided in form of one or more closed-loops which respectively match the second groove along said one or more closed-contours on the front surface of the valve plate.
  • the upper portions of the first and the second sealing members which respectively project out of the first and the second grooves are firmly pressed onto the respective cylinder parts.
  • any surface irregularities of the valve plate and the cylinder parts are tolerated by the resilient sealing members.
  • the first and the second sealing members are tightly secured to their positions designated by said one or more contours against any lateral force exerted by the pressurized refrigerant. Thereby, a gas-tight sealing is achieved between the valve plate and the respective cylinder parts.
  • each of the first and the second grooves has a semi-circular cross-section.
  • each of the first and the second sealing members has a corresponding circular cross-section.
  • each of the first and the second grooves is provided with a circular captive cross-section.
  • each of the first and the second sealing members has a corresponding circular cross-section.
  • the sealing members are made of silicone material suitable for compression fitting.
  • the first sealing member is provided in form of one or more closed-loops which surround a region that includes the intake port and the discharge port.
  • the second sealing member is also provided in form of one or more closed-loops which surround a region that includes the discharge port.
  • each of the first and the second sealing members is provided in form of a monolithic structure.
  • Figure 1 - is a schematic cross section of a reciprocating compressor having a sealing assembly according to an embodiment of the present invention.
  • Figure 2 - is a schematic partial perspective view of the reciprocating compressor having the sealing assembly shown in Fig. 1.
  • Figure 3 - is a schematic exploded partial perspective view of the reciprocating compressor having the sealing assembly shown in Fig. 2.
  • Figure 4 - is another schematic exploded partial perspective view of the reciprocating compressor having the sealing assembly shown in Fig. 2.
  • Figure 5 - is another schematic exploded partial perspective view of the reciprocating compressor having the sealing assembly shown in Fig. 2.
  • Figure 6 - is a schematic perspective view of a rear surface of a prior art valve plate.
  • Figure 7 - is a schematic perspective view of a front surface of the prior art valve plate shown in Fig. 6.
  • Figure 8 - is a schematic perspective view of a prior art gasket to be arranged on the rear surface of the prior art valve plate shown in Fig. 6.
  • Figure 9 - is a schematic perspective view of a prior art gasket to be arranged on the front surface of the prior art valve plate shown in Fig. 7.
  • Figure 10 - is a schematic perspective view of a rear surface of a valve plate according to an embodiment of the present invention.
  • Figure 11 - is a schematic perspective view of a front surface of the valve plate according to an embodiment of the present invention.
  • Figure 12 - is a schematic perspective view of a first sealing member according to an embodiment of the present invention, to be mounted on the rear surface of the valve plate shown in Fig. 10.
  • Figure 13 - is a schematic perspective view of a second sealing member according to an embodiment of the present invention, to be mounted on a front surface of the valve plate shown in Fig. 11.
  • Figure 14 - is a schematic enlarged top view of the front surface of the valve plate shown in Fig. 11.
  • Figure 15 - is a cross section taken along the line A-A of the valve plate shown in Fig. 14.
  • Figure 16 - is an enlarged view of the detail B shown in Fig. 15.
  • Figure 17 - is a schematic top view of the valve plate shown in Fig. 14 having the first and the second sealing members shown in Figs. 12 and 13 mounted thereon.
  • Figure 18 - is a cross section taken along the line A-A of the sealing assembly shown in Fig. 17.
  • Figure 19 - is an enlarged view of the detail C shown in Fig. 18.
  • the sealing assembly (1) is suitable for use in a reciprocating hermetic compressor (2) which includes a cylinder block (3) and a cylinder head (4) (Fig. 1).
  • the sealing assembly (1) comprises a valve plate (5) for interposing between the cylinder block (3) and the cylinder head (4), a first sealing member (6) for interposing between the cylinder block (3) and a rear surface (7) of the valve plate (5), which faces the cylinder block (3) and a second sealing member (8) for interposing between the cylinder head (4) and a front surface (9) of the valve plate (5), which faces the cylinder head (4) (Figs. 1 to 5).
  • a first groove (10) is provided along one or more closed-contours on the rear surface (7) of the valve plate (5), for receiving a base portion of the first sealing member (6) such that an upper portion thereof projects out of the first groove (10)
  • a second groove (11) is provided along one or more closed-contours on the front surface (9) of the valve plate (5), for receiving a base portion of the second sealing member (8) such that an upper portion thereof projects out of the second groove (11)
  • the first sealing member (6) is made from a resilient material and is provided in form of one or more closed-loops which respectively match the first groove (10) along the one or more closed-contours on the rear surface (7) of the valve plate (5)
  • the second sealing member (8) is made from a resilient material and provided in form of one or more closed-loops which respectively match the second groove (11) along the one or more closed-contours on the front surface (9) of the valve plate (5) (Figs. 10 to 13).
  • the valve plate (5), the cylinder block (3) and the cylinder head (4) each has four corresponding screw holes (14) for mounting the sealing assembly (1) (Fig. 3).
  • the upper portion of the first sealing member (6) and the upper portion of the second sealing member (8) which respectively project out of the first groove (10) and the second groove (11) are firmly pressed onto the flat surfaces of the respective cylinder parts, i.e., the cylinder block (3) and the cylinder head (4) (Figs. 4 to 5 and Figs. 17 to 19).
  • each of the first groove (10) and the second groove (11) has a semi-circular cross-section respectively along the one or more closed-contours (Figs. 14 to 16).
  • each of the first sealing member (6) and the second sealing member (8) has a corresponding circular cross-section respectively along the one or more closed-loops (Figs. 17 to 19).
  • the semi-circular cross-section of the first groove (10) and the second groove (11) and the respective circular cross-section of the first sealing member (6) and the second sealing member (8) each has substantially the same radius.
  • each of the first groove (10) and the second groove (11) is provided with a circular captive cross-section (not shown) along the one or more closed-contours.
  • each of the first sealing member (6) and the second sealing member (8) has a corresponding circular cross-section respectively along the one or more closed-loops.
  • each of the first sealing member (6) and the second sealing member (8) is made of silicone material suitable for compression fitting.
  • the valve plate (5) includes an intake port (12) and a discharge port (13) each for selectively letting a refrigerant pass through (Figs. 10 and 11).
  • the intake port (12) and discharge port (13) are configured by lift-check valves.
  • diaphragm check valves can be used.
  • the first sealing member (6) is provided in form of at least one closed-loop, wherein said at least one closed-loop matches a contour which surrounds a region that includes the intake port (12) and the discharge port (13) (Figs. 10 and 12).
  • the second sealing member (8) is provided in form of at least one closed-loop, wherein said at least one closed-loop matches a contour which surrounds a region that includes only the discharge port (13) (Figs. 11 and 13).
  • the said at least one closed-loop of the first sealing member (6) is provided in form of a monolithic structure (Fig. 12).
  • the said at least one closed-loop of the second sealing member (8) is also provided in form of a monolithic structure (Fig. 13).
  • the reciprocating hermetic compressor (2) according to the present invention comprises a sealing assembly (1) described in any of the above embodiments (Fig.1).
  • the refrigeration appliance according to the present invention comprises a reciprocating hermetic compressors (2) described in any of the above embodiments (Fig. 1).
  • the refrigeration appliance is in particular a domestic refrigerator (not shown).

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

Abstract

La présente invention concerne un ensemble d'étanchéité (1) pour une plaque porte-soupape disposée entre un bloc cylindres (3) et une tête de cylindre (4) dans un compresseur alternatif (2). L'ensemble d'étanchéité (1) comprend un premier élément d'étanchéité (6) intercalé entre le bloc cylindre (3) et la plaque porte-soupape (5) et un second élément d'étanchéité (8) intercalé entre la tête de cylindre (4) et la plaque porte-soupape (5). Une première rainure (10) est aménagée le long d'un ou plusieurs contours fermés sur la surface arrière (7) de la plaque porte-soupape (5), destinée à recevoir une partie de base du premier élément d'étanchéité (6) de manière qu'une partie supérieure de celui-ci fasse saillie de la première rainure (10). Une seconde rainure (11) est aménagée le long d'un ou plusieurs contours fermés sur la surface avant (9) de la plaque porte-soupape (5) destinée à recevoir une partie de base du second élément d'étanchéité (8) de manière qu'une partie supérieure de celui-ci fasse saillie de la seconde rainure (11). Le premier élément d'étanchéité (6) est constitué d'un matériau résistant et est fourni sous forme d'une ou plusieurs boucles fermées qui respectivement s'adaptent à la première rainure (10) le long du contour fermé parmi un ou plusieurs contours fermés sur la surface arrière (7) de la plaque porte-soupape (5), et le second élément d'étanchéité (8) est constitué dans un matériau résistant et présente la forme d'une ou plusieurs boucles fermées qui respectivement s'adaptent à la seconde rainure (11) le long du contour fermé parmi un ou plusieurs contours fermés sur la surface avant (9) de la plaque de porte-soupape (5).
PCT/EP2013/064206 2013-07-04 2013-07-04 Ensemble d'étanchéité pour compresseur hermétique alternatif WO2015000524A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13733019.7A EP3017195A1 (fr) 2013-07-04 2013-07-04 Ensemble d'étanchéité pour compresseur hermétique alternatif
PCT/EP2013/064206 WO2015000524A1 (fr) 2013-07-04 2013-07-04 Ensemble d'étanchéité pour compresseur hermétique alternatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/064206 WO2015000524A1 (fr) 2013-07-04 2013-07-04 Ensemble d'étanchéité pour compresseur hermétique alternatif

Publications (1)

Publication Number Publication Date
WO2015000524A1 true WO2015000524A1 (fr) 2015-01-08

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PCT/EP2013/064206 WO2015000524A1 (fr) 2013-07-04 2013-07-04 Ensemble d'étanchéité pour compresseur hermétique alternatif

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EP (1) EP3017195A1 (fr)
WO (1) WO2015000524A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019091665A1 (fr) * 2017-11-10 2019-05-16 Arcelik Anonim Sirketi Compresseur hermétique à étanchéité améliorée
CN114041024A (zh) * 2019-07-01 2022-02-11 福伊特专利有限公司 具有阀片的阀板

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5609476A (en) * 1995-01-28 1997-03-11 Samsung Electronics Co., Ltd. Reciprocating compressor with flow passage closed by valve pre-biased to an open position
US6126410A (en) * 1998-02-12 2000-10-03 Gast Manufacturing Corporation Head cover assembly for reciprocating compressor
US6431845B1 (en) * 2000-06-09 2002-08-13 Gast Manufacturing, Inc. Head cover assembly with monolithic valve plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5609476A (en) * 1995-01-28 1997-03-11 Samsung Electronics Co., Ltd. Reciprocating compressor with flow passage closed by valve pre-biased to an open position
US6126410A (en) * 1998-02-12 2000-10-03 Gast Manufacturing Corporation Head cover assembly for reciprocating compressor
US6431845B1 (en) * 2000-06-09 2002-08-13 Gast Manufacturing, Inc. Head cover assembly with monolithic valve plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019091665A1 (fr) * 2017-11-10 2019-05-16 Arcelik Anonim Sirketi Compresseur hermétique à étanchéité améliorée
CN114041024A (zh) * 2019-07-01 2022-02-11 福伊特专利有限公司 具有阀片的阀板
US20220356872A1 (en) * 2019-07-01 2022-11-10 Voith Patent Gmbh Valve plate having valve lamellae

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Publication number Publication date
EP3017195A1 (fr) 2016-05-11

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