EP4226044B1 - Unité de filtre et d'étranglement pour un compresseur à spirale, et compresseur à spirale pour un circuit frigorifique - Google Patents

Unité de filtre et d'étranglement pour un compresseur à spirale, et compresseur à spirale pour un circuit frigorifique

Info

Publication number
EP4226044B1
EP4226044B1 EP20789083.1A EP20789083A EP4226044B1 EP 4226044 B1 EP4226044 B1 EP 4226044B1 EP 20789083 A EP20789083 A EP 20789083A EP 4226044 B1 EP4226044 B1 EP 4226044B1
Authority
EP
European Patent Office
Prior art keywords
filter
scroll compressor
pressure chamber
housing
spiral
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
EP20789083.1A
Other languages
German (de)
English (en)
Other versions
EP4226044A1 (fr
Inventor
Lukas LÖHMER
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Priority to PL20789083.1T priority Critical patent/PL4226044T3/pl
Publication of EP4226044A1 publication Critical patent/EP4226044A1/fr
Application granted granted Critical
Publication of EP4226044B1 publication Critical patent/EP4226044B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components

Definitions

  • the invention relates to a filter and throttling unit for a scroll compressor with a housing having housing walls and an opening serving as a throttle or orifice, which is formed in one of the housing walls, as well as a scroll compressor for a refrigerant circuit with a drive, an eccentric unit driven by means of the drive, over which an orbiting displacement spiral is movable which engages in a stationary stator spiral, at least one displacement chamber between the stator spiral and the displacement spiral, a high-pressure chamber into which the at least one displacement chamber opens, a low-pressure chamber which opens into the at least one displacement chamber, an oil return channel through which the high-pressure chamber is fluidly connected to the low-pressure chamber, a back-pressure chamber which is formed on the side of the displacement spiral facing away from the stator spiral, and a gas connection channel through which the back-pressure chamber is fluidly connected to the high-pressure chamber.
  • Scroll compressors are used primarily for compressing refrigerants in the refrigeration and air conditioning systems of motor vehicles.
  • the expanded refrigerant entering the scroll compressor is in a gaseous state and, at least in electrically driven scroll compressors, typically flows into the housing on the motor side, so that the refrigerant flows through the electric motor.
  • the refrigerant also absorbs oil in the motor compartment, which is necessary for lubrication. This oil is usually separated from the refrigerant in an oil separator on the scroll compressor and returned to the compressor for lubrication.
  • the compressed refrigerant is returned to the refrigerant circuit via an outlet.
  • Such scroll compressors are, for example, from the EP 3 404 264 A1
  • the compressor is known to comprise a high-pressure chamber, a low-pressure chamber, an orbiting displacement spiral, and a stationary stator spiral interacting with the displacement spiral.
  • the orbiting displacement spiral engages with the stator spiral in such a way that displacement spaces are formed between the displacement spiral and the stator spiral, in which the medium to be compressed is received and compressed.
  • a back-pressure chamber is provided between the compressor's bearing housing and the displacement spiral. The pressure prevailing in the back-pressure chamber and acting on the displacement spiral causes a resultant force in the axial direction, which presses the displacement spiral against the stationary spiral, thus sealing the spirals from each other.
  • a fluidic connection exists between the high-pressure chamber and the backpressure chamber via a gas connection channel, ensuring that the high-pressure fluid from the high-pressure chamber is also present in the backpressure chamber.
  • a gas connection throttle or orifice is located in the gas connection channel, which controls the mass flow of the fluid entering the backpressure chamber and reduces the pressure.
  • the scroll compressor includes an oil return channel that fluidically connects the high-pressure chamber to the low-pressure chamber. Oil intended for lubricating the components in the scroll compressor is separated from the compressed fluid via a separator located in the high-pressure chamber and returned to the low-pressure chamber via the oil return channel, so that The returned oil can be reused to lubricate the components.
  • An oil return throttle is installed in the oil return channel to reduce the pressure of the returned oil.
  • a filter and throttling system in which a hollow cylindrical filter element is held in a plastic housing. At the end facing the pressure side, a capillary tube 13 is arranged inside this filter element, through which the inflow occurs and which serves as a throttling element.
  • a disadvantage of conventional scroll compressors is that either no filtration of the recirculated gas and oil takes place, or the effort required to manufacture and install the filter element and throttle is very high. Additionally, there is a risk of the filter elements becoming clogged in the recirculation channels.
  • the challenge therefore, is to provide a filter and throttling unit that is easy to manufacture and can be installed in a scroll compressor with minimal effort. Furthermore, clogging of the filter elements within the scroll compressor should be prevented.
  • the filter and throttle unit according to the invention for a scroll compressor has a housing with housing walls that form an outer wall of the filter and throttle unit and thus protect the unit axially and radially.
  • the housing is bounded by a plate-shaped filter element.
  • An opening serving as a throttle or orifice is formed in one of these bounding walls.
  • a filter element is arranged within the housing walls, and thus also bounded at least radially by them. This plate-shaped element bounds the filter and throttle unit on one axial side. This design allows for easy access and installation of the filter element within the housing.
  • the plate-shaped design particularly in horizontally mounted compressors, creates a surface area for the filter element that can be oriented perpendicular to gravity, enabling self-cleaning of the filter element without external force.
  • the filtered solids do not adhere to the filter element, even during operation.
  • the scroll compressor according to the invention has a drive, which can in particular be an electric motor.
  • This drives an eccentric unit, which is coupled to a displacement spiral, so that it performs an orbiting, i.e., eccentric, rotational movement.
  • the displacement spiral is usually arranged on a sliding disk and engages with a stationary stator spiral.
  • the stator spiral, together with the displacement spiral, defines one or more displacement chambers. As the displacement spiral rotates along the stator spiral, the volume of these chambers is reduced, thus compressing the medium in the rotating displacement chambers.
  • the last displacement chamber opens into a high-pressure chamber, into which the compressed medium flows, for example, via an outlet valve.
  • the scroll compressor also has a low-pressure chamber that opens into the outer displacement chamber and The low-pressure chamber serves as an inlet, and the entire space in which the electric motor can be arranged also forms the low-pressure chamber. This is accordingly formed by the entire enclosed space of the scroll compressor, in which the fluid to be compressed is present in a relaxed state, the same state in which it flows into the scroll compressor. Furthermore, an oil return channel is provided, through which the high-pressure chamber is fluidically connected to the low-pressure chamber, with the fluidic connection typically not being direct, but rather via an oil separator chamber. Additionally, the scroll compressor has a back-pressure chamber, which is formed on the side of the displacement spiral facing away from the stator spiral.
  • a gas connection channel fluidly connects the back-pressure chamber to the high-pressure chamber to generate a back pressure that loads the displacement spiral against the stator spiral.
  • a filter and throttle unit is arranged in the gas connection channel and/or in the oil return channel.
  • This unit has a housing with housing walls that externally delimit the filter and throttle unit.
  • One of the filter and throttle unit's walls incorporates an opening that serves as a throttle or orifice.
  • a plate-shaped filter element is arranged within a space defined by the housing walls, defining one axial boundary of the filter and throttle unit.
  • the housing has an axially limiting housing wall in which the opening serving as a throttle or aperture is formed, and an annular, radially limiting housing wall that extends from the axially limiting housing wall. It extends axially. Accordingly, an essentially pot-shaped component is created, the housing of which does not require further assembly but can be manufactured in one piece.
  • the filter element is designed as a filter screen, radially limited by a sealing element that is fixed in the housing.
  • the sealing element ensures that no oil or gas can bypass the filter element.
  • the screen provides sufficient filtration efficiency with high durability. Furthermore, the filter screen can be easily secured in the housing via the sealing element.
  • the housing is designed as a stamped part in which the filter element is positively locked to the sealing element.
  • the stamped part design is particularly cost-effective, as is the positive locking of the filter element to the sealing element. This locking can be achieved, for example, by simply forming the axial end of the annular housing wall.
  • the sealing element rests with a first axial side against the axially limiting housing wall and with its opposite axial side against a collar of the radially limiting housing wall that extends at least partially radially inwards. In this way, a positive-locking connection between the sealing element and the housing can be established in a simple manner.
  • a tight seal is achieved when the sealing element is axially compressed between the collar and the axially limiting housing wall, ensuring that the gas or oil can flow exclusively over the filter element, which is surrounded by the seal.
  • the filter screen is radially overmolded on the outside with a plastic component of the sealing element, so that the filter screen and sealing element can be inserted into the housing as a single unit and secured there, which further simplifies assembly and manufacturing.
  • the filter screen could be inserted between two pressed-in sealing elements inside the housing or secured between the collar and a sealing element.
  • the gas connection channel and/or the oil return channel extends at least partially through the stator spiral. These channels can be easily incorporated during the manufacturing of the spiral, so that no additional machining is necessary.
  • the filter and throttling unit is mounted in the stator spiral.
  • the filter and throttling unit can simply be inserted into the corresponding channels in the compressor housing before the stator spiral is mounted.
  • the filter and throttling unit is pressed into an inlet opening on a cover plate of the stator spiral, with the filter element being plate-shaped and defining the high-pressure chamber.
  • the filter element extends at the same height as the wall surface of the stator spiral cover plate that defines the high-pressure chamber, thus forming a common wall surface. Therefore, there is no space in which the filtered contaminants can settle in front of the filter element. Instead, in the usual horizontal design of the compressor, these contaminants are always forced back from the surface of the filter element into the air by gravity. the high-pressure chamber, thus preventing the filter element from becoming clogged.
  • the gas connection channel extends from the high-pressure chamber through the stator spiral and a bearing housing component to the back-pressure chamber. This minimizes the number of components that need to be precisely aligned during assembly, allowing for simple channel fabrication.
  • the high-pressure chamber is connected to an oil separation chamber in which an oil separator is arranged.
  • an oil separator is arranged. This enables the separation and return of the oil to the low-pressure chamber, thus minimizing the oil load on downstream components.
  • the oil return channel preferably extends from the lowest point of the oil separation chamber through a head housing section, the stator spiral, and the bearing housing section to the low-pressure chamber. This layout and arrangement ensures complete oil return and facilitates simple manufacturing and assembly.
  • the inlet opening of the gas connection channel is arranged in the direction of gas flow upstream of the oil separator, so that a gas-oil mixture enters the back pressure chamber and thus the bearing housing, ensuring that the bearings and moving parts located there are adequately lubricated.
  • the illustrated filter and throttling unit 10 has a housing 12, which consists of an axially limiting housing wall 14, which in the present embodiment is somewhat thinner in the radially inner region, and an annular housing wall 16 that radially limits the filter and throttling unit 10 and extends axially from the radially outer edge of the axially limiting housing wall 14.
  • This housing can be manufactured particularly easily from sheet metal by stamping and bending.
  • a narrow opening 18 is formed, serving as a throttle or orifice.
  • annular sealing element 20 is located between the axially bounding housing wall 14 and The sealing element 20 is clamped and axially compressed by an axial end section of the annular, radially bounding housing wall 16, which is designed as a collar 22 and is bent radially inwards. Accordingly, the first axial side of the sealing element 20 rests against the axially bounding wall 14 and the opposite axial side of the sealing element 20 rests against the collar 22.
  • a filter element 24, designed as a filter screen, is arranged on the open side of the housing 12.
  • This filter element is plate-shaped, and its radially outer edge is either overmolded by the plastic of the sealing element 20 or axially clamped between two sealing elements 20 or between the collar 22 and the sealing element 20. Accordingly, oil or refrigerant can flow into the housing 12 via the filter element 24, filtering out solids from the oil or refrigerant stream. The oil or refrigerant then flows out of the filter and throttling unit 10 through the opening, which acts as a throttle or orifice. The pressure downstream of the opening 18 is lower than the pressure upstream of the opening 18. The mass flow rate is also significantly reduced by the cross-sectional constriction.
  • the figure shows a scroll compressor 26 according to the invention, which has a multi-part compressor housing 28 with a first motor housing part 30 and a head housing part 32 axially adjoining it, wherein the motor housing part 30 surrounds a drive 34 in the form of an electric motor and the head housing part 32 surrounds a compressor chamber 36.
  • the drive 34 has a stator 38 with windings 40 and an internal rotor 42 with permanent magnets 44, which is mounted on a shaft 46.
  • the shaft 46, and thus the rotor 26, is supported on one side by a ball bearing 48, which is arranged in a receiving opening on an axially limiting rear wall 50 of the motor housing part 30, and on the other side by a second ball bearing 52, which is located in a A bearing housing part 54 is arranged, which is attached to the side axially opposite the rear wall 50 in the radial interior of the motor housing part 30.
  • a shaft seal 56 is arranged in the bearing housing part 54 between the rotor 42 and the second ball bearing 52, via which a motor compartment 58, in which the drive 34 is arranged, is sealed against a back pressure chamber 60, which is formed on the axial side of the bearing housing part 54 opposite the motor compartment 58.
  • an electronics compartment 62 is formed, in which a circuit board 64 with the power electronics 66 is mounted. This is connected to the windings 40 of the stator 38, so that the stator can be energized in a controlled manner.
  • the power supply to the power electronics 66 is provided via a connector 68, which extends parallel to the motor shaft from the rear wall 50.
  • the electronics compartment 62 is closed by a cover 70.
  • An eccentric unit 72 is formed on the end of the shaft 46 facing the compressor chamber 36, on whose output journal 74 an eccentric shaft bearing 76 is arranged, on which an orbiting displacement spiral 78 is eccentrically mounted, which corresponds to a stator spiral 80 which is attached in the head housing part 32 and on the bearing housing part 54, so that when the displacement spiral 78 rotates eccentrically, its walls 82 slide along the walls 84 of the stator spiral 80, forming several displacement chambers 86, thereby reducing the size of the displacement chambers 86 and thus compressing the refrigerant drawn in from a low-pressure chamber 88.
  • the inlet from the low-pressure chamber 88 into the displacement chambers 86 is formed radially between the head housing part 32 and the stationary stator spiral 80, so that the refrigerant flows radially inwards from the low-pressure chamber 88 through the displacement chambers 86 towards an outlet 90, which is formed on a cover plate 91 of the stator spiral 80, into a
  • the high-pressure chamber 92 is supplied with refrigerant via a check valve 94 designed as a leaf spring element.
  • the low-pressure chamber 88 is supplied with refrigerant via a concealed compressor inlet, through which the refrigerant flows into the engine compartment 58, which serves as the low-pressure chamber 88.
  • a sliding disk 96 is arranged between the bearing housing part 54 and the stator spiral 80, as well as the orbiting displacer spiral 78.
  • This sliding disk 96 is clamped in its radially outer region between the head housing part 32 and the motor housing part 30.
  • This sliding disk 96 also has openings through which several pins (not visible in the figure) project from the bearing housing part 54 into corresponding receptacles 98 of the orbiting displacer spiral 78. Sliding bushings 100 are arranged on these receptacles, providing additional sliding support for the displacer spiral 78.
  • the displacer spiral 78 has a sliding and sealing ring 104 on the side facing the sliding disk 96, arranged in a circumferential groove 102. Accordingly, the displacer spiral 78 is guided in a sliding manner relative to the shaft 46 and the bearing housing part 54.
  • the high-pressure chamber 92 of the scroll compressor 26 is fluidically connected to an oil separation chamber 106, in which an oil separator 108 is arranged in the form of a cyclone, so that the lighter, gaseous refrigerant flows to a compressor outlet 110, while the liquid and heavier oil is separated from the refrigerant in the cyclone and drips to a lowest point of the oil separation chamber 106, which is formed by a bottom 112.
  • an oil return channel 114 is provided at the bottom 112 of the oil separator chamber 106, which fluidically connects the oil separator chamber 106 and thus the high-pressure chamber 92 with the low-pressure chamber 88 or the engine compartment 58.
  • the oil return channel 114 extends through the head housing part 32, the stationary stator spiral 80, the sliding disc 96 and through the bearing housing part 54 into the engine compartment 58.
  • the filter and throttle unit 10 is fitted, in particular pressed into, an inlet opening 116 of the oil return channel 114 on the cover plate 91 of the stator spiral 80, so that the oil is returned to the engine compartment 58 with reduced pressure and filtered.
  • a gas connection channel 118 extends from the high-pressure chamber 92 through the stator spiral 80, the sliding disk 96 and through the bearing housing part 54 into the counter-pressure chamber 60, in which a pressure is accordingly reduced compared to the high-pressure chamber 92, but increased compared to the low-pressure chamber 88, whereby the orbiting displacer spiral 78 is loaded against the stator spiral 80, which leads to an improved seal between the end faces of the orbiting displacer spiral 78 and the stationary stator spiral 80.
  • a filter and throttling unit 10 is also located at an inlet opening 120 in the gas connection channel 118 on the cover plate 91 of the stator spiral 80.
  • the opening 18 of this unit is appropriately sized and can be pressed into the inlet opening 120.
  • the filter element 24 prevents the ingress of contaminants into the counter-pressure chamber 60, thereby protecting the ball bearings 52, eccentric shaft bearings 76, sliding bushings 100, sliding disc 96, and sliding and sealing ring 104 located therein.
  • the filter surface of the filter element 24 is located approximately in the same plane as the cover plate 91 of the stator housing part 80 at both the inlet opening 120 of the gas connection channel 118 and the inlet opening 116 of the oil return channel 114.
  • deposits accumulate there Filtered-out contaminants do not accumulate in the oil return channel 116 or the gas connection channel 120 and clog them, but instead fall into the high-pressure chamber 92 due to gravity. This results in self-cleaning. Consequently, the functionality of the oil return channel 116 and the gas connection channel 120 is maintained for a long time.
  • the filter and throttle units 10 can be easily removed and replaced, as they are readily accessible and simple to install and remove. Different desired back pressures can also be set using filter and throttle units 10 with varying opening widths.
  • the scroll compressor can have any type of drive, or the housing divisions can be changed.
  • the filter and throttle unit can be attached to the inlet openings in a manner other than press-fitting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (15)

  1. Unité de filtre et d'étranglement (10) pour un compresseur à spirale (26), comprenant
    un boîtier (12) avec des parois de boîtier (14, 16),
    une ouverture (18) servant d'étranglement, qui est réalisée dans l'une des parois de boîtier (14, 16),
    caractérisée en ce que
    un élément filtrant (24) est disposé à l'intérieur des parois de boîtier (14, 16) du boîtier (12), lequel est réalisé en forme de plaque et limite l'unité de filtre et d'étranglement (10) vers un côté axial.
  2. Unité de filtre et d'étranglement pour un compresseur à spirale selon la revendication 1,
    caractérisée en ce que
    le boîtier (12) présente une paroi de boîtier (14) limitant axialement, dans laquelle est réalisée l'ouverture (18) servant d'étranglement ou de diaphragme, et une paroi de boîtier (16) annulaire, limitant radialement, qui s'étend axialement depuis la paroi de boîtier (14) limitant axialement.
  3. Unité de filtre et d'étranglement pour un compresseur à spirale selon l'une des revendications 1 ou 2,
    caractérisée en ce que
    l'élément filtrant (24) est réalisé sous forme de tamis filtrant, lequel est limité radialement par un élément d'étanchéité (20), lequel est fixé dans le boîtier (12).
  4. Unité de filtre et d'étranglement pour un compresseur à spirale selon la revendication 3,
    caractérisée en ce que
    le boîtier (12) est réalisé sous forme de pièce estampée, dans laquelle l'élément filtrant (24) est fixé par engagement positif par l'élément d'étanchéité (20).
  5. Unité de filtre et d'étranglement pour un compresseur à spirale selon la revendication 4,
    caractérisée en ce que
    l'élément d'étanchéité (20) s'applique avec un premier côté axial contre la paroi de boîtier (14) limitant axialement et s'applique avec son côté axial opposé contre un collet (22) s'étendant au moins en partie radialement vers l'intérieur de la paroi de boîtier (16) limitant radialement.
  6. Unité de filtre et d'étranglement pour un compresseur à spirale selon la revendication 5,
    caractérisée en ce que
    l'élément d'étanchéité (20) est pressé axialement entre le collet (22) et la paroi de boîtier (16) limitant axialement.
  7. Unité de filtre et d'étranglement pour un compresseur à spirale selon l'une des revendications 3 à 6,
    caractérisée en ce que
    l'élément filtrant (24) est surmoulé radialement à l'extérieur avec une matière plastique de l'élément d'étanchéité (20).
  8. Compresseur à spirale (26) pour un circuit de réfrigérant, comprenant un entraînement (34),
    une unité excentrique (72) pouvant être entraînée au moyen de l'entraînement (34), par le biais de laquelle une spirale de refoulement orbitale (78) peut être déplacée, laquelle s'engage dans une spirale de stator fixe (80),
    au moins un espace de refoulement (86) entre la spirale de stator (80) et la spirale de refoulement (78),
    une chambre haute pression (92) dans laquelle débouche l'au moins un espace de refoulement (86),
    une chambre basse pression (88) qui débouche dans l'au moins un espace de refoulement (86),
    un canal de retour d'huile (114) par le biais duquel la chambre haute pression (92) est connectée fluidiquement à la chambre basse pression (88), une chambre de contre-pression (60) qui est réalisée sur le côté de la spirale de refoulement (78) opposé à la spirale de stator (80),
    un canal de liaison de gaz (118) par le biais duquel la chambre de contre-pression (60) est connectée fluidiquement à la chambre haute pression (92), caractérisée en ce que
    une unité de filtre et d'étranglement (10) selon l'une des revendications précédentes est disposée dans le canal de liaison de gaz (118) et/ou dans le canal de retour d'huile (114).
  9. Compresseur à spirale pour un circuit de réfrigérant selon la revendication 8,
    caractérisée en ce que
    le canal de liaison de gaz (118) et/ou le canal de retour d'huile (114) s'étendent au moins en partie à travers la spirale de stator (80).
  10. Compresseur à spirale pour un circuit de réfrigérant selon la revendication 9,
    caractérisée en ce que
    l'unité de filtre et d'étranglement (10) est fixée dans la spirale de stator (80).
  11. Compresseur à spirale pour un circuit de réfrigérant selon la revendication 10,
    caractérisée en ce que
    l'unité de filtre et d'étranglement (10) est pressée dans une ouverture d'entrée (116, 120) sur un disque de recouvrement (91) de la spirale de stator (80), l'élément filtrant (24) étant réalisé en forme de plaque et limitant la chambre haute pression (92).
  12. Compresseur à spirale pour un circuit de réfrigérant selon l'une des revendications 8 à 11,
    caractérisée en ce que
    le canal de liaison de gaz (118) s'étend depuis la chambre haute pression (92) à travers la spirale de stator (80) et une partie de boîtier de palier (54) jusqu'à la chambre de contre-pression (60).
  13. Compresseur à spirale pour un circuit de réfrigérant selon l'une des revendications 8 à 12,
    caractérisée en ce que
    la chambre haute pression (92) est connectée à une chambre de séparation d'huile (106) dans laquelle est disposé un séparateur d'huile (108).
  14. Compresseur à spirale pour un circuit de réfrigérant selon l'une des revendications 8 à 13,
    caractérisée en ce que
    le canal de retour d'huile (114) s'étend depuis un point le plus bas de la chambre de séparation d'huile (106) à travers une partie de boîtier de tête (32), la spirale de stator (80) et la partie de boîtier de palier (54) jusqu'à la chambre basse pression (88).
  15. Compresseur à spirale pour un circuit de réfrigérant selon l'une des revendications 8 à 14,
    caractérisée en ce que
    l'ouverture d'entrée (120) du canal de liaison de gaz (118) est disposée dans la direction d'écoulement du gaz avant le séparateur d'huile (108).
EP20789083.1A 2020-10-08 2020-10-08 Unité de filtre et d'étranglement pour un compresseur à spirale, et compresseur à spirale pour un circuit frigorifique Active EP4226044B1 (fr)

Priority Applications (1)

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PL20789083.1T PL4226044T3 (pl) 2020-10-08 2020-10-08 Jednostka filtrująco-dławiąca do sprężarki spiralnej oraz sprężarka spiralna do obiegu czynnika chłodniczego

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WO2024125800A1 (fr) 2022-12-15 2024-06-20 Pierburg Gmbh Compresseur à spirale

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Publication number Priority date Publication date Assignee Title
JP4370130B2 (ja) 2003-08-13 2009-11-25 三菱重工業株式会社 流量制御機構及び圧縮機
JP4219262B2 (ja) 2003-12-10 2009-02-04 サンデン株式会社 圧縮機
JP4329528B2 (ja) * 2003-12-19 2009-09-09 株式会社豊田自動織機 スクロールコンプレッサ
JP5018111B2 (ja) 2007-02-06 2012-09-05 パナソニック株式会社 フィルターおよび冷媒圧縮機
JP5315933B2 (ja) * 2008-06-05 2013-10-16 株式会社豊田自動織機 電動スクロール型圧縮機
JP5612411B2 (ja) * 2010-09-21 2014-10-22 株式会社ヴァレオジャパン スクロール型圧縮機
CN203035552U (zh) 2012-12-26 2013-07-03 安徽省大富机电技术有限公司 一种涡旋压缩机
US20150048022A1 (en) * 2013-08-14 2015-02-19 Honda Motor Co., Ltd. O-ring filter seal, assembly and method
DE102017110913B3 (de) 2017-05-19 2018-08-23 OET GmbH Verdrängermaschine nach dem Spiralprinzip, Verfahren zum Betreiben einer Verdrängermaschine, Fahrzeugklimaanlage und Fahrzeug
CN210317748U (zh) 2019-06-28 2020-04-14 苏州中成新能源科技股份有限公司 一种静盘

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US12203473B2 (en) 2025-01-21
DK4226044T3 (da) 2026-02-09
US20230374988A1 (en) 2023-11-23
FI4226044T3 (fi) 2026-02-04
PL4226044T3 (pl) 2026-03-09
ES3056911T3 (en) 2026-02-25
EP4226044A1 (fr) 2023-08-16

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