FR2495235A1 - PISTON COMPRESSOR FOR SMALL REFRIGERATORS - Google Patents
PISTON COMPRESSOR FOR SMALL REFRIGERATORS Download PDFInfo
- Publication number
- FR2495235A1 FR2495235A1 FR8113574A FR8113574A FR2495235A1 FR 2495235 A1 FR2495235 A1 FR 2495235A1 FR 8113574 A FR8113574 A FR 8113574A FR 8113574 A FR8113574 A FR 8113574A FR 2495235 A1 FR2495235 A1 FR 2495235A1
- Authority
- FR
- France
- Prior art keywords
- cylinder
- blade
- valve
- heel
- valve blade
- 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- Withdrawn
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
-
- 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
-
- 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
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
- F04B39/1033—Adaptations or arrangements of distribution members the members being disc valves annular disc valves
-
- 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
- F04B39/1086—Adaptations or arrangements of distribution members the members being reed valves flat annular reed valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
La présente invention concerne un compresseur à piston. Les orifices d'aspiration 16 et l'interstice de contournement de la lame clapet ne sont prévus que sur une partie de la périphérie diamétralement opposée au talon de la lame clapet correspondant à un arc d'environ 90 degrés, tandis que sur le reste de la périphérie, de part et d'autre du talon de la lame clapet, celle-ci ne présente, par rapport à l'alésage du cylindre, qu'un jeu de fonctionnement d'environ 0,2 millimètre et que le piston 21 comporte à sa face supérieure une partie tournée en surépaisseur 22 qui s'engage et s'ajuste dans l'orifice de refoulement 19 en forme de tuyère. Le compresseur s'applique notamment à des petits réfrigérateurs. (CF DESSIN DANS BOPI)The present invention relates to a piston compressor. The suction openings 16 and the bypass gap of the valve blade are provided only on a part of the periphery diametrically opposite the heel of the valve blade corresponding to an arc of about 90 degrees, while on the rest of the periphery, on either side of the heel of the valve blade, the latter has, with respect to the bore of the cylinder, only an operating clearance of about 0.2 millimeter and that the piston 21 has at its upper face a portion turned in extra thickness 22 which engages and fits into the discharge orifice 19 in the form of a nozzle. The compressor is particularly applicable to small refrigerators. (CF DRAWING IN BOPI)
Description
- 1 - La présente invention concerne un compresseur à piston, prévu plusThe present invention relates to a piston compressor, provided more
particulièrement pour de petits réfrigérateurs, avec une plaque support bridée d'une manière étanche entre especially for small refrigerators, with a support plate clamped in a sealed manner between
le capot de la botte à soupape et la face frontale du cylin- the boot of the valve boot and the end face of the cylinder
dre ensemble avec, du côté du cylindre, le talon de la lame dre together with, on the side of the cylinder, the heel of the blade
clapet d'aspiration, cette lame clapet en forme de disque an- suction valve, this flap blade shaped disc
nulaire comporte du côté opposé au talon au moins un bec qui on the side opposite the heel, at least one beak which
joue dans un-évidement prévu dans la face frontale du cylin- plays in a recess provided in the front face of the cylinder.
dre et faisant fonction de limiteur de course, elle délimite avec la paroi du cylindre un interstice de contournement et recouvre les orifices d'aspiration pratiqués dans la plaque support, tandis que des orifices sont prévus au centre de la plaque support pour le clapet de refoulement et que l'organe de fermeture de ces orifices est rivé entre la plaque support it acts as a stroke limiter, it delimits with the cylinder wall a bypass gap and covers the suction holes in the support plate, while orifices are provided in the center of the support plate for the discharge valve and that the closure member of these orifices is riveted between the support plate
et le capot de la boîte de soupape. and the cover of the valve box.
Un tel compresseur à piston est décrit dans le document de mise à disposition du public 03 15 03 406. Les orifices Such a piston compressor is described in the document for making available to the public 03 15 03 406. The orifices
d'aspiration et l'interstice de contournement sont régulière- suction and the circumvention gap are regularly
ment répartis dans la partie non encastrée de la lame clapet d'aspiration. Ainsi, l'interstice de contournement est-il long et étroit, se réduisant en quelque sorte à une fente, de sorte qu'il se comporte comme une bague labyrinthe et oppose distributed in the non-flush part of the suction valve blade. So, is the bypass gap long and narrow, somehow slit down, so that it behaves like a labyrinth ring and opposes
au fluide aspiré une résistance à l'écoulement considérable. the fluid sucked a considerable resistance to flow.
Du fait de son étendue considérable, dans le sens de la péri- Because of its considerable extent, in the sense of the
phérie du cylindre, cet interstice de contournement apporte une contribution appréciable à l'espace mort du compresseur à cylinder, this circumferential gap makes an appreciable contribution to the dead space of the compressor at
piston. Un espace mort du même ordre de grandeur apparaît éga- piston. A dead space of the same order of magnitude also appears
lement en regard de la face plane du piston, avec l'orifice facing the plane face of the piston, with the orifice
central de la lame clapet d'aspiration et les orifices prati- the suction valve blade and the orifices
qués dans la plaque support pour le clapet de refoulement. in the support plate for the discharge valve.
D'un tel compresseur, utilisé par exemple dans de petits réfrigérateurs ou pompes à chaleur, on exige, en même temps qu'une structure simple et très compacte, un débit aussi élevé Of such a compressor, used for example in small refrigerators or heat pumps, it is required, at the same time as a simple and very compact structure, such a high flow rate
que possible, c'est-à-dire un espace mort aussi réduit que pos- as possible, ie a dead space as small as possible
sible avec, malgré cela, une perte de charge minime à l'aspi- sible with, despite this, a minimal loss of pressure on the aspi-
ration.ration.
Afin de satisfaire simultanément ces exigences contra- In order to satisfy simultaneously these contradictory requirements
dictoires, avec un compresseur à piston du genre décrit dans le préambule, on propose selon la présente invention la dictators, with a piston compressor of the type described in the preamble, it is proposed according to the present invention the
combinaison des dispositions suivantes: les orifices d'aspi- combination of the following: the suction orifices
ration et l'interstice de contournement de la lame clapet ration and the gap bypassing the flap blade
correspondante ne sont prévus que sur une partie de la péri- corresponding part are only foreseen for a part of the
phérie, du côté opposé au talon de la lame clapet, correspon- on the side opposite to the heel of the flap blade, corresponds to
dant à un arc d'environ 900, tandis que sur le reste de la pé- at an arc of about 900, while on the rest of the
riphérie, de part et d'autre du talon de la lame clapet, il n'y a que le jeu nécessaire pour le fonctionnement (environ 0,2 /mîllVean is que la face supérieure du piston comporte une partie tournée, en surépaisseur, qui s'engage et s'ajuste Riphère, on both sides of the heel of the valve blade, there is only the necessary clearance for the operation (about 0.2 / mVill is that the upper face of the piston has a turned part, extra thickness, which engage and adjust
dans l'orifice en forme de tuyère prévu pour le clapet de re- in the nozzle-shaped orifice provided for the check valve
foulement. Les orifices d'aspiration se trouvent ainsi rassemblés sur un quadrant de la périphérie, diamétralement opposé au point d'encastrement du talon de la lame clapet d'aspiration et o par conséquent la course du clapet est maximale, ce qui injection disposal. The suction ports are thus gathered on a quadrant of the periphery, diametrically opposed to the point of insertion of the heel of the suction valve blade and o consequently the travel of the valve is maximum, which
permet de réaliser une limitation assez étroite de cette cour- allows for a rather narrow limitation of this
se, à quelque deux à trois millimètres, sans qu'il en résulte une perte de charge notable à l'aspiration. Il suffit pour cela, selon une extension de l'invention, de prévoir dans la it is about two to three millimeters, without resulting in a significant loss of load on suction. It suffices for this, according to an extension of the invention, to provide in the
plaque d'étanchéité en matière souple, insérée entre la pla- sealing plate of flexible material, inserted between the
que support et la face frontale du cylindre, une découpe par that support and the front face of the cylinder, a cut by
poinçonnage qui entoure le bec de la lame clapet d'aspiration. punching surrounding the spout of the suction valve blade.
Du fait que l'interstice de contournement se trouve lui aussi concentré dans le quadrant diamétralement opposé au point d'encastrement, le rapport entre les longueurs de ses côtés Because the bypass gap is also concentrated in the quadrant diametrically opposite the embedding point, the ratio between the lengths of its sides
est sensiblement plus petit que dans les compresseurs à pis- is significantly smaller than in
ton de ce type, déjà connus, de sorte qu'avec une section de passage plus petite de cet interstice, et une contribution à l'espace mort du compresseur réduite en conséquence, on est encore assuré d'une réduction concomitante de la perte de Such a tone, already known, such that with a smaller passage section of this gap, and a contribution to the reduced space of the compressor reduced accordingly, it is still ensured a concomitant reduction of the loss of
charge à l'aspiration.load on suction.
Du côté du refoulement, la contribution à la valeur de - 2 - On the side of repression, the contribution to the value of - 2 -
- 3 2495235- 3 2495235
l'espace mort se trouve quasiment réduite à néant, avec la the dead space is practically reduced to nothing, with the
partie en saillie tournée dans la face du piston, qui s'en- projecting part turned in the face of the piston, which
gage et s'ajuste dans l'orifice en forme de tuyère du clapet de refoulement, cette structure de l'orifice de refoulement, assure là aussi une réduction de la résistance à l'écoulement du fluide refoulé, qui se trouve ensuite refroidi au passage plating and fits in the nozzle-shaped orifice of the discharge valve, this structure of the discharge orifice, here again ensures a reduction in the resistance to the flow of the discharged fluid, which is then cooled in the passage
dans la tubulure de refoulement qui baigne dans le fluide as- in the discharge pipe which is immersed in the fluid as-
piré, la conduite d'aspiration l'entourant de manière concen- the suction line surrounding it in a concentrated manner.
trique. Ceci contribue également à obtenir un débit au refou- cudgel. This also contributes to obtaining a flow
lement aussi grand que possible, avec une construction simple as large as possible, with a simple construction
et compacte.and compact.
Nous allons décrire l'invention plus en détail, en nous We will describe the invention in more detail, in us
référant à l'exemple de réalisation représenté schématique- referring to the embodiment shown diagrammatically
ment dans les figures qui montrent respectivement: Figure 1 une coupe axiale par la zone des clapets Figure 2 une coupe radiale selon le plan II/II dans la figure 1 et FIG. 1 is an axial section through the zone of the valves. FIG. 2 is a radial section along the plane II / II in FIG.
Figure 3 une vue par en dessous de la lame clapet d'aspi- Figure 3 a view from below the vacuum valve blade
ration, o l'on a indiqué en trait mixte les po- ration, where the dotted lines have been indicated
sitions relatives des orifices d'aspiration et relative positions of the suction and
de l'alésage du cylindre.the bore of the cylinder.
Le compresseur à piston comporte une plaque support 5 bridée au moyen de goujons qui n'ont pas été représentés entre la face frontale 3-du cylindre 4 et le couvercle supérieur des The piston compressor comprises a support plate 5 clamped by means of studs which have not been shown between the end face 3 of the cylinder 4 and the upper cover of the
soupapes 9, avec interposition de plaques souples d'étanchéi- valves 9, with the interposition of flexible sealing plates
té 6, 7 sur ses deux faces, ainsi que d'une bague d'étanchéité 6, 7 on both sides, as well as a sealing ring
8. Entre cette plaque et la face frontale du cylindre est éga- 8. Between this plate and the front of the cylinder is also
lement bridé le talon d'encastrement 10 de la lame clapet d'as- the flush mounting heel 10 of the flap blade
piration 11. La bague 2 du clapet de refoulement est fixée par rivetage, avec les ressorts de fermeture 12 correspondants, dans les rayons 13 du couvercle supérieur 9 des soupapes; par souci de clarté, un seul de ces rayons 13 a été représenté 11. The ring 2 of the discharge valve is fixed by riveting, with the closing springs 12 corresponding, in the spokes 13 of the upper cover 9 of the valves; for the sake of clarity, only one of these spokes 13 has been shown
dans la figure 1.in Figure 1.
Les becs 14, diamétralement opposés au talon 10, étroite- The beaks 14, diametrically opposed to the heel 10, narrowly
ment entourés par les découpes par poinçonnage 15 corres- surrounded by the corresponding punched cuts.
pondantes, pratiquées dans la plaque d'étanchéité 7 qui se trouve du côté du cylindre, constituent le dispositif de limitation de la course de la lame clapet. Dans cette zone de la périphérie sont groupés les orifices d'aspiration 16 prévus dans la plaque support 5 ainsi que l'interstice de contournement 17 prévu entre la lame clapet ll et l'alésage 4 du cylindre, tandis que sur le reste de la périphérie, il n'est prévu entre la lame clapet et l'alésage du cylindre 1 mill1imètr9 qu'un jeu de fonctionnement 18 de quelque 0,2 / pour p? us in the sealing plate 7 which is on the side of the cylinder, constitute the limitation device of the stroke of the valve blade. In this zone of the periphery are grouped the suction orifices 16 provided in the support plate 5 as well as the circumferential gap 17 provided between the valve blade 11 and the bore 4 of the cylinder, while on the rest of the periphery. , there is provided between the valve blade and the cylinder bore 1 millimeter9 that an operating clearance 18 of some 0.2 / for p? us
de clarté, dans la figure 3, on a exagéré ce jeu. of clarity, in Figure 3, we exaggerated this game.
L'orifice 1 de la lame clapet d'aspiration 11, concen- The orifice 1 of the suction valve blade 11, concentrates
trique avec l'arc de cercle sur lequel sont répartis les ori- with the arc of a circle on which are distributed the
fices d'aspiration 16, donne accès à l'orifice 19 du clapet de refoulement, cet orifice a la forme d'une tuyère annulaire, il est pratiqué dans la plaque support 5 et délimité en son suction chamber 16, provides access to the orifice 19 of the discharge valve, this orifice has the shape of an annular nozzle, it is formed in the support plate 5 and delimited in its
centre, par la pièce séparée centrale 20, en forme de champi- center, by the central separate piece 20, in the form of
gnon,qui est vissée au centre du couvercle supérieur des ca- gnon, which is screwed to the center of the top cover of the
YOns 13 et qui constitue le siège intérieur pour la bague clapet de refoulement 2. Dans la position du point mort haut, qui n'a pas été représentée, la partie en forme de godet 22, tournée en saillie sur la face supérieure du piston 21, vient YOns 13 and which constitutes the inner seat for the discharge valve ring 2. In the position of top dead center, which has not been shown, the cup-shaped portion 22, projecting on the upper face of the piston 21 comes
s'engager et s'ajuste dans cet orifice.l9. engage and adjust in this hole.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803032009 DE3032009A1 (en) | 1980-08-25 | 1980-08-25 | PISTON COMPRESSOR FOR SMALL REFRIGERATORS |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2495235A1 true FR2495235A1 (en) | 1982-06-04 |
Family
ID=6110346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8113574A Withdrawn FR2495235A1 (en) | 1980-08-25 | 1981-07-07 | PISTON COMPRESSOR FOR SMALL REFRIGERATORS |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE3032009A1 (en) |
FR (1) | FR2495235A1 (en) |
GB (1) | GB2083566B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996607A1 (en) * | 2012-10-08 | 2014-04-11 | Tecumseh Europe Sa | Reciprocating compressor for use in hermetic compressor unit for compressing refrigerant for e.g. air conditioning, has plate integrally formed, and including central part connected to peripheral part by arms partially blocking port opening |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304341A1 (en) * | 1983-02-09 | 1984-08-09 | Jan 5106 Rott Wattez | Piston compressor with combined intake and pressure valve, especially for refrigeration installations |
DE3329790C2 (en) * | 1983-08-18 | 1995-11-30 | Wabco Gmbh | Valve carrier for piston compressors |
IT8404742V0 (en) * | 1984-01-31 | 1984-01-31 | Melloni Sergio | FLUID INTERCEPTING DEVICE |
JPH0335899Y2 (en) * | 1985-10-21 | 1991-07-30 | ||
US5174735A (en) * | 1991-04-16 | 1992-12-29 | Tecumseh Products Company | Low reexpansion valve system |
GB9715742D0 (en) * | 1997-07-26 | 1997-10-01 | Knorr Bremse Systeme | Gas compressors |
US6116874A (en) * | 1997-07-26 | 2000-09-12 | Knorr-Bremse Systems For Commercial Vehicles Limited | Gas compressors |
GB9715741D0 (en) * | 1997-07-26 | 1997-10-01 | Knorr Bremse Systeme | Improvements to gas compressors |
US6623258B1 (en) | 1999-05-25 | 2003-09-23 | Danfoss Compressors Gmbh | Axial piston refrigerant compressor with piston front face projection |
DE102004003137A1 (en) * | 2004-01-21 | 2005-08-11 | Behr Gmbh & Co. Kg | Compression device for gaseous media |
DE102004047159B4 (en) * | 2004-09-29 | 2006-09-07 | Danfoss Compressors Gmbh | Piston compressor, in particular hermetic refrigerant compressor |
EP3228864B1 (en) * | 2016-04-08 | 2018-08-01 | J.P. Sauer & Sohn Maschinenbau GmbH | Valve unit for a piston compressor and piston compressor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1487537A (en) * | 1966-07-01 | 1967-07-07 | Hoerbiger Ventilwerke Ag | Valve set for piston compressor |
FR2090896A5 (en) * | 1970-04-29 | 1972-01-14 | Bosch | |
DE2311720A1 (en) * | 1973-03-09 | 1974-09-12 | Hoerbiger Ventilwerke Ag | SELF-ACTING VALVE |
FR2393954A1 (en) * | 1977-06-06 | 1979-01-05 | Trane Co | Refrigeration system compressor valve plate - has low resistance suction flow path defined by annular corrugated element between planar members |
FR2411346A1 (en) * | 1977-12-09 | 1979-07-06 | Bosch Gmbh Robert | Inlet valve for multistage air compressor - has seat locating on shoulder between stage chambers with one end of ring component acting as closure body |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3070122A (en) * | 1960-04-04 | 1962-12-25 | Chrysler Corp | Compressor intake valve |
DE1503424C3 (en) * | 1965-07-06 | 1980-08-21 | Hoerbiger Ventilwerke Ag, Wien | Valve set for reciprocating compressors |
DE6942750U (en) * | 1969-11-03 | 1970-01-29 | Westinghouse Bremsen Apparate | SUCTION VALVE FOR COMPRESSORS |
DE2363860A1 (en) * | 1973-12-21 | 1975-07-03 | Billstein Spezialfab Wilhelm | Plate valve for piston compressor - has outlet slots parallel to tongue edges and divided by crossbars into cylindrical-bore passage openings |
-
1980
- 1980-08-25 DE DE19803032009 patent/DE3032009A1/en not_active Withdrawn
-
1981
- 1981-06-26 GB GB8119811A patent/GB2083566B/en not_active Expired
- 1981-07-07 FR FR8113574A patent/FR2495235A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1487537A (en) * | 1966-07-01 | 1967-07-07 | Hoerbiger Ventilwerke Ag | Valve set for piston compressor |
FR2090896A5 (en) * | 1970-04-29 | 1972-01-14 | Bosch | |
DE2311720A1 (en) * | 1973-03-09 | 1974-09-12 | Hoerbiger Ventilwerke Ag | SELF-ACTING VALVE |
FR2393954A1 (en) * | 1977-06-06 | 1979-01-05 | Trane Co | Refrigeration system compressor valve plate - has low resistance suction flow path defined by annular corrugated element between planar members |
FR2411346A1 (en) * | 1977-12-09 | 1979-07-06 | Bosch Gmbh Robert | Inlet valve for multistage air compressor - has seat locating on shoulder between stage chambers with one end of ring component acting as closure body |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996607A1 (en) * | 2012-10-08 | 2014-04-11 | Tecumseh Europe Sa | Reciprocating compressor for use in hermetic compressor unit for compressing refrigerant for e.g. air conditioning, has plate integrally formed, and including central part connected to peripheral part by arms partially blocking port opening |
Also Published As
Publication number | Publication date |
---|---|
DE3032009A1 (en) | 1982-03-04 |
GB2083566B (en) | 1984-02-08 |
GB2083566A (en) | 1982-03-24 |
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Legal Events
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ST | Notification of lapse |