EP3415756B1 - Compresseur - Google Patents

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Publication number
EP3415756B1
EP3415756B1 EP16881690.8A EP16881690A EP3415756B1 EP 3415756 B1 EP3415756 B1 EP 3415756B1 EP 16881690 A EP16881690 A EP 16881690A EP 3415756 B1 EP3415756 B1 EP 3415756B1
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EP
European Patent Office
Prior art keywords
suction chamber
pressure
inlet port
suction
valve
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.)
Active
Application number
EP16881690.8A
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German (de)
English (en)
Other versions
EP3415756A1 (fr
EP3415756A4 (fr
Inventor
Takeshi Konishi
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.)
Valeo Japan Co Ltd
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Valeo Japan Co Ltd
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 Valeo Japan Co Ltd filed Critical Valeo Japan Co Ltd
Publication of EP3415756A1 publication Critical patent/EP3415756A1/fr
Publication of EP3415756A4 publication Critical patent/EP3415756A4/fr
Application granted granted Critical
Publication of EP3415756B1 publication Critical patent/EP3415756B1/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
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • 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
    • F04B39/08—Actuation 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening

Definitions

  • the present invention relates to a compressor that includes a valve mechanism varying an opening amount of a suction passage extending from an inlet port to a suction chamber and, in particular to, a compressor that hastens startability thereof.
  • a stopper having a predetermined depth is formed in a position that opposes a tip of a suction valve in a cylinder block.
  • the tip of the suction valve abuts this stopper. In this way, this intake valve is prevented from generating self-excited vibrations.
  • an opening amount regulating valve is disposed on a suction passage that extends from an inlet port to a suction chamber of the compressor, and the opening amount regulating valve regulates the opening amount of this passage.
  • an opening amount regulating valve disclosed in PTL 1 has been known, for example. As illustrated in Fig. 5(a) , this has: a valve body 104 that opens/closes a flow passage 103 between an inlet port 100 and a suction chamber 101; a recess 105 in which the valve body 104 is slidably housed; a spring 106 that is disposed in the recess 105; a communication passage 107 that communicates between the recess 105 and the suction chamber 101; and a communication hole 108 that is formed in the valve body 104.
  • a valve seat 109 that the valve body 104 abuts is formed at a downstream end of the inlet port 100.
  • the refrigerant gas that is suctioned from the evaporator in a refrigeration circuit is suctioned into the suction chamber 101 via the flow passage 103 as a variable passage and the communication passages 108, 107 as fixed passages.
  • Pressure loss occurs when the refrigerant gas flows through these passages, and a difference between a primary-side pressure and a secondary-side pressure of the valve body 104, which is caused by this pressure loss, acts on the valve body in a direction to increase an opening amount of the flow passage 103 against an urging force of the spring 106.
  • the pressure pulsations of the refrigerant gas which are induced by the self-excited vibrations of the suction valve, are dampened when passing through the flow passage 103, the opening amount of which becomes slight, or when passing through the communication passage 107 and the communication hole 108 of the valve body 104.
  • the transmission of the pressure pulsations, which are caused by the self-excited vibrations of the suction valve, from the inlet port 100 to an external cooling circuit is prevented, and vibratory noise of the evaporator is suppressed.
  • EP 1 921 313 A2 discloses a compressor according to the state of the art.
  • the compressor comprises a check valve assembly having a valve body with a central float valve.
  • the pressure in the suction chamber 101 (the secondary-side pressure) is possibly increased to be higher than the pressure of the inlet port 100 (the primary-side pressure).
  • the above-described compressor, in which the check valve is disposed on the suction passage is placed under such a temperature condition, release of the pressure from the suction chamber 101 to the inlet port 100 is blocked by the check valve, and the pressure in the suction chamber 101 is kept in a higher state than the pressure of the inlet port 100.
  • the present invention has been made in view of such circumstances and therefore has a primary purpose of providing a compressor capable of improving startability of the compressor by balancing a difference between a pressure of an inlet port and a pressure of a suction chamber during a stop of the compressor while suppressing transmission of pressure pulsations at the time when a flow rate is low.
  • a compressor according to the present invention is defined in claim 1. It is used in a refrigeration circuit at least including a condenser, an expander, an evaporator, the compressor including: an inlet port connected to a low-pressure side of this refrigeration circuit; a suction chamber that houses a working fluid delivered from the inlet port; a compression mechanism that compresses the working fluid suctioned from the suction chamber; and a suction passage that connects the inlet port and the suction chamber, in that a check valve assembly that only allows a flow of the working fluid in a direction from the inlet port to the suction chamber is disposed on the suction passage and that pressure equalizing means that allows discharge of the working fluid from the suction chamber to the inlet port only when a pressure of the suction chamber is higher than a pressure of the inlet port is formed on the outside of an internal passage ve assembly.
  • the check valve assembly that only allows the flow of the working fluid in the direction from the inlet port to the suction chamber is disposed on the suction passage and the pressure equalizing means that allows the discharge of the working fluid from the suction chamber to the inlet port only when the pressure of the suction chamber is higher than the pressure of the inlet port is formed on the outside of the internal passage of the check valve assembly, the working fluid can be suctioned into the suction chamber through the check valve assembly during an operation of the compressor, and the working fluid can be discharged from the suction chamber to the inlet port through the outside of the check valve assembly during a stop of the compressor to balance the pressures.
  • the check valve assembly is configured to include: a valve housing having a housing space (32) therein, and including an inflow port communicating between the inlet port and the housing space, and an outflow port communicating between the suction chamber and the housing space; a valve body that is housed in the housing space and moves within the housing space on the basis of a pressure difference across the valve body so as to regulate an opening amount of the outflow port; and an urging member that urges the valve body in a direction to reduce the opening amount of the outflow port and close the inflow port.
  • Such a check valve assembly has a simple structure, and the opening amount of the outflow port is autonomously regulated in accordance with a flow rate of the working fluid flowing therethrough.
  • the working fluid can flow with the sufficient opening amount.
  • the opening amount of the outflow port can sufficiently be reduced by balance between a pressure difference, which is slightly generated even when the flow rate is slight, and a force of the urging member.
  • the valve housing of the check valve assembly has a fitted section that is loosely fitted to a holding section formed on the suction passage in such a manner that axial movement thereof is allowed.
  • This fitted section may block the flow of the working fluid on the outside of the valve housing in the case where the fitted section abuts an edge of the holding section on the suction chamber side, and may allow the flow of the working fluid on the outside of the valve housing in the case where the fitted section separates from the edge of the holding section on the suction chamber side.
  • the valve body of the check valve assembly moves to block a communication state between the inflow port and the outflow port by the suction chamber pressure and an urging force of the urging member.
  • the valve housing also separates from the edge of the holding section on the suction chamber side and moves to the inlet port side by the suction chamber pressure, the flow of the working fluid on the outside of the valve housing is allowed, and the pressure can be released from the suction chamber to the inlet port.
  • the pressure of the suction chamber and the pressure of the inlet port can be balanced by the simple structure.
  • valve housing having the above-described function may be configured to include fitted section that is expanded in a radial direction in which the fitted section is loosely fitted to an annular groove formed in an inner peripheral wall of the suction passage, a seat surface on which the fitted section is seated may be formed on the suction chamber side of the annular groove, and the fitted section may be provided with a communication section that communicates between the outside and the inside thereof.
  • the communication section may be a hole formed in the fitted section, a slit formed on an outer peripheral surface of the fitted section, or the like.
  • the check valve assembly that only allows the flow of the working fluid in the direction from the inlet port to the suction chamber is disposed on the suction passage that connects the inlet port and the suction chamber, and the pressure equalizing means that allows the discharge of the working fluid from the suction chamber to the inlet port only when the pressure of the suction chamber is higher than the pressure of the inlet port is formed on the outside of the internal passage of the check valve assembly.
  • Fig. 1 illustrates a piston-type compressor 1 that serves as a part of a refrigeration circuit with a condenser, an expansion valve, and an evaporator, which are not illustrated.
  • This piston-type compressor 1 is configured to have: a cylinder block 2; a cylinder head 4 that is assembled to a rear side of this cylinder block 2 via a valve plate 3; and a front housing 6 that is assembled to cover a front side of the cylinder block 2 and defines a crank chamber 5 on the front side of the cylinder block 2.
  • These front housing 6, cylinder block 2, valve plate 3, and cylinder head 4 are fastened in an axial direction by unillustrated fastening bolts to constitute a compressor housing 7.
  • a driveshaft 8 that is disposed in the crank chamber 5 is held in a freely rotatable manner by the front housing 6 and the cylinder block 2 via a bearing 9 (only the cylinder block side thereof is illustrated).
  • This driveshaft 8 is projected from the front housing 6 and is connected to an unillustrated travel engine via a belt and a pulley so as to rotate when power of the travel engine is transmitted.
  • the cylinder block 2 is formed with: a bearing hole 11 in which the bearing 9 is housed; and plural cylinder bores 12 that are disposed at equally-spaced intervals on a circumference centered on this bearing hole 11.
  • a single head piston 13 is inserted in each of the cylinder bores 12 in a manner to be reciprocally slidable.
  • a swash plate 14 that rotates synchronously with the driveshaft 8 is provided on the driveshaft.
  • An engagement section 13a of the single head piston 13 is firmly attached to a peripheral edge portion of this swash plate 14 via a pair of shoes 15 provided longitudinally.
  • the swash plate 14 when the driveshaft 8 rotates, the swash plate 14 also rotates in conjunction with this.
  • This rotary motion of the swash plate 14 is converted to linear reciprocating motion of the single head piston 13 via the shoes 15, and a volume of a compression chamber 16 formed between the single head piston 13 and the valve plate 3 in each of the cylinder bores 12 is thereby changed.
  • the valve plate 3 is formed with a suction hole 17 and a discharge hole 18 that correspond to each of the cylinder bores 12.
  • a suction chamber 20 and a discharge chamber 21 are defined in the cylinder head 4.
  • the suction chamber 20 houses a working fluid to be supplied to the compression chamber 16, and the discharge chamber 21 houses the working fluid that is discharged from the compression chamber 16.
  • the suction chamber 20 is formed in a central portion of the cylinder head 4, and the discharge chamber 21 is annularly formed around the suction chamber 20.
  • the suction chamber 20 communicates with a low-pressure side of an external refrigerant circuit (an outlet side of the evaporator) via an inlet port 22 that radially extends in a manner to penetrate the annular discharge chamber 21.
  • the discharge chamber 21 communicates with an unillustrated discharge port that is connected to a high-pressure side of the external refrigerant circuit (an inlet side of the condenser).
  • the suction chamber 20 can communicate with the compression chamber 16 via the suction hole 17 that is opened/closed by a suction valve 23, and the discharge chamber 21 can communicate with the compression chamber 16 via the discharge hole 18 that is opened/closed by a discharge valve 24.
  • the refrigerant is suctioned into the compression chamber 16 from the suction chamber 20 via the suction hole 17, which is opened/closed by the suction valve 23, and, in a compression stroke, the compressed refrigerant is discharged from the compression chamber 16 to the discharge chamber 21 via the discharge hole 18, which is opened/closed by the discharge valve 24.
  • a check valve assembly 30 is provided to vary an opening amount of this intake passage 25.
  • Fig. 2 shows schematic configuration diagrams of the check valve assembly 30.
  • This check valve assembly 30 is configured to have: a valve housing 31; and a valve body 41 and a spring 51 as an urging member that are housed in this valve housing 31.
  • the valve housing 31 has a cylindrical shape in which a columnar valve body housing space 32 is formed, and is loosely fitted to an inner wall of the suction passage 25, which leads to the suction chamber 20 from the inlet port 22, in such a manner that axial movement thereof is allowed.
  • valve housing 31 is formed to have: a cylindrical peripheral wall 33; a valve seat section 34 that is provided at an upstream end of this peripheral wall 33; a bottom wall 35 that is provided at a downstream end of the peripheral wall 33; and an annular fitted section 36 that is projected radially outward from a peripheral edge of the valve seat section 34 (a peripheral edge of an upstream end of the valve housing 31 in the axial direction) .
  • annular groove (a holding section) 26 is formed on the inner wall of the suction passage 25, which leads to the suction chamber 20 from the inlet port 22 of the compressor housing 7 (the cylinder block 2), an axial dimension of this annular groove 26 is set to be larger than an axial dimension of the fitted section 36, and the fitted section 36 is fitted in this annular groove 26 in a manner to allow axial movement thereof.
  • the fitted section 36 is constructed of: a shoulder 36a that extends radially outward from an outer circumference of the valve body (in this example, a peripheral edge of the valve seat section on the upstream side) ; and a locking wall 36b that continues from this shoulder 36a and extends toward the upstream side, and can be deformed elastically by forming this locking wall 36b such that a diameter thereof is gradually increased toward the upstream side.
  • the suction passage 25 is formed such that a diameter R1 thereof on the upstream side of the annular groove 26 is almost equal to or larger than a diameter R2 of the shoulder 36a and is smaller than a tip diameter R3 of the locking wall 36b.
  • the suction passage 25 is formed such that a diameter R4 thereof on the downstream side of the annular groove 26 is smaller than the diameter R2 of the shoulder 36a.
  • the fitted section 36 is illustrated as an integrated member with the valve seat section 34, the peripheral wall 33, and the bottom wall 35.
  • the fitted section 36 and the peripheral wall 33 may be formed integrally, and the valve seat section 34 as a separate member may be attached thereto.
  • the fitted section 36 and the valve seat section 34 may be formed integrally, and the peripheral wall 33 as a separate member may be attached thereto.
  • the fitted section 36 may be formed of an elastic material such as rubber or may be formed of a synthetic resin.
  • plural communication holes (communication sections) 37 are formed circumferentially at equally-spaced intervals (for example, at every 90 degrees).
  • an inflow port 38 that communicates between the inlet port 22 and the valve body housing space 32 is formed in the valve seat section 34, and the peripheral wall 33 is formed with plural outflow ports 39, each of which communicates between the suction chamber 20 and the valve body housing space 32, are formed circumferentially at equally-spaced intervals (for example, at every 90 degrees) in the peripheral wall 33.
  • the bottom wall 35 of the valve housing 31 is formed with an equalizing port 40, and the equalizing port 40 makes the rear of the valve body 41, which is housed in the valve body housing space 32 and will be described below, match a suction chamber pressure.
  • the valve body 41 is housed in the valve body housing space 32 of the valve housing 31 in an axially movable manner, and is constructed of a hollow cylindrical piston, in which a top wall 42 and a peripheral wall 43 formed continuously from a peripheral edge of this top wall 42 are integrally formed, and a bottom of which is eliminated.
  • the valve body 41 is formed such that an outer diameter thereof is almost equal to an inner diameter of the valve body housing space 32, and an outer peripheral surface of the peripheral wall 43 slidingly contacts an inner peripheral surface of the valve body housing space 32 with specified clearance being interposed therebetween.
  • axial length of the valve body 41 is not particularly limited.
  • valve body 41 is set to have such length that, in a state where the top wall 42 of the valve body 41 abuts a peripheral edge of the inflow port 38 in the valve seat section 34 of the valve casing 31 from the inside, the outflow ports 39 are closed by the peripheral wall 43 of the valve body 41.
  • Each of the outflow ports 39 is formed in a position away from the valve seat section 34. Accordingly, even when the top wall 42 of the valve body 41 does not abut the valve seat section 34 of the valve housing 31, a communication state between the inflow port 38 and each of the outflow ports 39 is blocked at a time point at which each of the outflow ports 39 is closed by the outer peripheral surface of the valve body 41. Thus, a lift section from a state where the valve body 41 abuts an upstream end wall of the valve housing 31 to a state where the valve body 41 is lifted and closure of each of the outflow ports 39 by the outer peripheral surface of the valve body 41 is canceled corresponds to a closure section in which blockage of the communication state between the inflow port 38 and each of the outflow ports 39 is maintained.
  • the spring 51 is housed in the valve body 41 in a manner to urge the valve body 41 toward the valve seat section 34 of the valve housing 31.
  • the spring 51 is elastically mounted between an inner surface of the top wall 42 of the valve body 41 and a peripheral edge of the equalizing port 40 in the bottom wall 35 of the valve housing 31 by a specified setting force.
  • the valve housing 31, which houses the valve body 41 is inserted and pressed in the suction passage 25 from the inlet port 22 with an opposite side of the valve housing 31 from the fitted section 36 being an insertion end.
  • the fitted section 36 is elastically deformed to be contracted inward.
  • the shoulder 36a abuts the seat surface 26a, the fitted section 36 is restored by its own restoring force and expands in the annular groove 26, and the fitted section 36 is loosely fitted to the annular groove 26 in such a manner that the axial movement thereof is allowed.
  • the check valve assembly 30 is urged to the downstream side by a fluid pressure of the working fluid, and the shoulder 36a of the valve housing 31 abuts the seat surface 26a, which is formed in a peripheral edge portion of the annular groove 26 (the holding section) on the suction chamber side, and thereby blocks the working fluid that flows on the outside of the valve housing 31.
  • valve body 41 which is housed in the valve housing 31, resists an urging force of the spring 51 by the fluid flowing from the inlet port 22 and moves in a direction to increase the communication state between the inflow port 38 and each of the outflow ports 39. Then, the working fluid, which flows from the inlet port 22, flows through the valve housing 31 and is suctioned into the suction chamber 20.
  • the check valve assembly 30 is urged to the downstream side by the fluid pressure of the working fluid, and the shoulder 36a of the valve housing 31 abuts the seat surface 26a and thereby blocks the working fluid that flows on the outside of the valve housing 31.
  • the valve body 41 which is housed in the valve housing 31, moves in a direction to reduce the communication state between the inflow port 38 and each of the outflow ports 39 by the urging force of the spring 51. Accordingly, the working fluid, which flows from the inlet port 22, flows through the valve housing 31 and is suctioned into the suction chamber 20.
  • the working fluid which flows from the inlet port 22, is suctioned into the suction chamber 20 only through each of the outflow ports 39, an opening amount of which is reduced in accordance with balance between the slightly generated pressure difference and the urging force of the spring 51. Accordingly, the transmission of the low-pressure pulsations to the external refrigerant circuit can reliably be inhibited, and the generation of the abnormal noise can reliably be suppressed.
  • valve body 41 moves to the upstream side by the urging force of the spring 51 and the pressure P 2 of the suction chamber 20, is seated on the valve seat section 34, and thereby blocks the communication state between the inflow port 38 and each of the outflow ports 39. That is, the passage on the inside of the check valve assembly 30 is closed.
  • the entire check valve assembly 30 also moves to the upstream side by the pressure of the suction chamber 20, and the fitted section 36 separates from the seat surface 26a (the peripheral edge portion of the annular groove 26 on the suction chamber side) and abuts a peripheral edge portion (the stopper surface 26b) of the annular groove 26 on the inlet port side.
  • the working fluid in the suction chamber 20 is released to the inlet port 22 via a portion between the shoulder 36a of the valve housing 31 and the seat surface 26a, the outside of the fitted section 36, and the communication holes 37 (the flow of the working fluid is allowed on the outside of the internal passage of the check valve assembly 30), and the pressure of the suction chamber 10 and the pressure of the inlet port 22 can thereby be balanced.
  • a change in the opening amount of the suction passage 25 (an opening area) that includes the check valve assembly 30 of the present invention has a characteristic as illustrated in Fig. 4 .
  • each of the communication sections provided in the fitted section 36 is constructed of the communication hole 37.
  • each of the communication sections may be configured by forming a slit on an outer peripheral surface of the fitted section 36.
  • the piston-type compressor is exemplified.
  • the present invention can also be applied to another type of the compressor as long as intake pulsations are generated in the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (2)

  1. Compresseur (1) utilisé dans un circuit de réfrigération incluant au moins un condensateur, un expanseur, un évaporateur, le compresseur comprenant :
    un port d'entrée (22) connectable à un côté de faible pression de ce circuit de réfrigération ;
    une chambre d'aspiration (20) qui loge un fluide de travail distribué à partir du port d'entrée (22) ;
    un mécanisme de compression qui compresse le fluide de travail aspiré à partir de la chambre d'aspiration (20) ; et
    un passage d'aspiration (25) qui connecte le port d'entrée (22) et la chambre d'aspiration (25),
    un ensemble clapet antiretour (30) qui permet uniquement un écoulement du fluide de travail dans une direction allant du port d'entrée (22) jusqu'à la chambre d'aspiration (20) étant disposé sur le passage d'aspiration (25), et
    un moyen d'égalisation de pression qui permet un déchargement du fluide de travail à partir de la chambre d'aspiration (20) jusqu'au port d'entrée (22) uniquement lorsqu'une pression de la chambre d'aspiration (20) est supérieure à une pression du port d'entrée (22) étant formé sur l'extérieur d'un passage interne de l'ensemble clapet antiretour (30),
    dans lequel
    l'ensemble clapet antiretour (30) inclut :
    un boîtier de clapet (31) ayant un espace de boîtier (32) à l'intérieur de celui-ci, et incluant un port d'arrivée (38) communiquant entre le port d'entrée (22) et l'espace de boîtier (32), et un port d'évacuation (39) communiquant entre la chambre d'aspiration (20) et l'espace de boîtier (32) ;
    un corps de clapet (41) qui est logé dans l'espace de boîtier (32) et se déplace à l'intérieur de l'espace de boîtier (32) sur la base d'une différence de pression au travers du corps de clapet (41) de manière à réguler une quantité d'ouverture du port d'évacuation (39) ; et
    un élément de sollicitation (51) qui sollicite le corps de clapet (41) dans une direction afin de réduire la quantité d'ouverture du port d'évacuation (39) et fermer le port d'arrivé (38),
    le boîtier de clapet (31) de l'ensemble clapet antiretour (30) a une section ajustée (36) qui est ajustée de manière lâche à une section de retenue (26) formée dans le passage d'aspiration (25) de manière à ce qu'un mouvement axial de celle-ci soit permis, et
    le moyen d'égalisation de pression est formé en bloquant l'écoulement du fluide de travail sur l'extérieur du boîtier de clapet (31) dans le cas où la section ajustée (36) est attenante à une portion de bord (26a) de la section de retenue (26) sur le côté de la chambre d'aspiration et en autorisant l'écoulement du fluide de travail sur l'extérieur du boîtier de clapet (31) dans le cas où la section ajustée (36) se sépare de la portion de bord (26a) de la section de retenue (26) sur le côté de la chambre d'aspiration.
  2. Compresseur (1) selon la revendication 1, dans lequel le boîtier de clapet (31) a une section ajustée (36) s'étendant dans une direction radiale qui est ajustée de manière lâche à une rainure annulaire (26) formée sur une paroi périphérique interne du passage d'aspiration (25),
    une surface de siège (26a) sur laquelle la section ajustée (36) est assise est formée sur le côté de la chambre d'aspiration de la rainure annulaire (26), et la section ajustée (36) est munie d'une section de communication (37) qui communique entre l'extérieur et l'intérieur de celle-ci.
EP16881690.8A 2015-12-28 2016-12-22 Compresseur Active EP3415756B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015255660 2015-12-28
PCT/JP2016/088364 WO2017115715A1 (fr) 2015-12-28 2016-12-22 Compresseur

Publications (3)

Publication Number Publication Date
EP3415756A1 EP3415756A1 (fr) 2018-12-19
EP3415756A4 EP3415756A4 (fr) 2019-10-09
EP3415756B1 true EP3415756B1 (fr) 2020-10-07

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EP16881690.8A Active EP3415756B1 (fr) 2015-12-28 2016-12-22 Compresseur

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EP (1) EP3415756B1 (fr)
JP (1) JP6857946B2 (fr)
WO (1) WO2017115715A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748477A (zh) * 2019-11-27 2020-02-04 湖北文理学院 一种实现压缩机气量无级调节的方法及系统
JP7428286B1 (ja) 2023-03-20 2024-02-06 いすゞ自動車株式会社 バルブ装置

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Publication number Priority date Publication date Assignee Title
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JP6857946B2 (ja) 2021-04-14
JPWO2017115715A1 (ja) 2018-10-18
EP3415756A1 (fr) 2018-12-19
EP3415756A4 (fr) 2019-10-09
WO2017115715A1 (fr) 2017-07-06

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