DE102017207145A1 - compressor - Google Patents

Abstract

The invention relates to a compressor (2), in particular an electromotive refrigerant compressor, for compressing a fluid (F), with a compressor housing (4) with a housing bottom (6), and with a in the compressor housing (4) mounted compressor part (8) for conveying the fluid (F) from a low-pressure side inlet (46) to a high-pressure side outlet (16), wherein in the housing bottom (6) a separation device (14) is introduced, which connected to the outlet (16) cylindrical Abscheidekammer (18) and a separator (20) coaxially disposed therein for separating lubricant (24) contained in the fluid (F), and wherein a high pressure chamber (40) of the compressor housing (4) is fluidically coupled to the separation chamber (18) by means of a passageway (27) , And wherein the passage channel (27) is inserted in such a manner in an intermediate wall (44) between the high-pressure chamber (40) and the deposition chamber (18) that this radially ver sets and the outside of the separator (20) opens into the separation chamber (18).

Description

The invention relates to a compressor for compressing a fluid, having a compressor part mounted in a compressor housing for conveying the fluid from a low-pressure side inlet to a high-pressure side outlet. In this case, a compressor is understood to be, in particular, a refrigerant compressor, preferably an electromotive compressor, for an air conditioning system of a motor vehicle.

In vehicles, an air conditioning system is installed regularly, which can cool the vehicle interior in the manner of a compression refrigeration machine. Such plants basically have a circuit in which a refrigerant, for example R-134a (1,1,1,2-tetrafluoroethane) or R-774 (CO ₂ ) is conducted. In operation, the refrigerant is compressed by means of a compressor or compressor, which leads to a pressure and temperature increase of the refrigerant. In particular, the compressor is operated by an electric motor.

The (refrigerant) compressor downstream of a condenser, which is in thermal contact with the environment of the vehicle. As a result, takes place in the condenser, a temperature decrease of the refrigerant, which is then passed into a fluidically downstream evaporator. In the evaporator, the refrigerant is released to the original pressure, which is why the temperature of the refrigerant is further lowered.

The evaporator is downstream of another heat exchanger, which is in thermal contact with a fan line of the air conditioner, which leads into the interior of the vehicle. In this case, thermal energy is transferred from the thermally contacted component to the refrigerant, which leads to a cooling of the component and a heating of the refrigerant. To close the circuit, the refrigerant is supplied to the compressor again.

In the compressor of the circuit and there in the housing with a housing bottom a first low-pressure side compressor element of a compressor part and a fixed second high-pressure side compressor element of the compressor part for compressing the fluid and a high-pressure chamber and a separator are arranged one behind the other in the flow direction.

Inside the compressor there is a lubricant that mixes with the gaseous refrigerant during operation. The lubricant (oil) serves to reduce friction occurring, which arises during operation in the compressor between the first compressor element and the second, fixedly mounted high-pressure side compressor element. Furthermore, the lubricant fulfills a sealing function, so that any (refrigerant) leaks arising between the compressor elements are largely reduced or completely avoided, which increases the efficiency of the refrigerant compressor.

In particular, the refrigerant mixed with lubricant flows compressedly in the compressor from the compressor part into a high-pressure chamber, which in turn is coupled to the separation device by means of a through-passage. In the separating device, the oil is separated from the refrigerant, so that the separated oil is or can be recycled to the compressor via a valve and a lubricant channel and the refrigerant is carried on as oil-free as possible via an outlet of the separator into the refrigerant circuit.

The separation device has a deposition chamber connected to the outlet and a coaxially arranged separator, so that an annular space is formed between the separator and an inner wall of the deposition chamber. The passageway of the separator is designed as a round hole, wherein the fluid flows from the high pressure chamber via the passageway into the annulus of the deposition chamber. In this case, the fluid flows through a flow cross section from the high-pressure chamber into the separation chamber which is adapted to the delivery volume occurring in accordance with the operation and which is determined by the clear width of the through-channel. Since the cross-sectional area of the flow cross-section must be adapted to the delivery volume occurring in accordance with the operation, the fluid flow branches into two partial flows, which are guided along opposite sides of the separator in opposite directions of flow. This causes an undesirable vortex formation in the annulus between the separator and the chamber inner wall of the deposition chamber.

The invention has for its object to provide a particularly suitable compressor, wherein the funded fluid flows through the deposition chamber with the least possible vortex formation.

This object is achieved by the features of claim 1. Advantageous embodiments and further developments are the subject of the dependent claims.

The inventive device comprises a compressor for compressing a fluid, in particular a refrigerant, wherein the compressor is connected in a refrigerant circuit of an air conditioning fluidly between a heat exchanger and a condenser. Of the Compressor has the task to increase the pressure of the pumped fluid. The compressor has a (compressor) housing with a housing bottom and a compressor part mounted in the housing for conveying the fluid from a low-pressure side inlet to a high-pressure side outlet.

Within the compressor part and in a, preferably electromotive, drive the compressor part, a lubricant is present, which mixes in operation with the gaseous refrigerant. It serves to reduce friction in the compressor part and in its drive and fulfills a sealing function in the compressor part by largely reducing or completely preventing leaks between a first low-pressure side compressor element and a second firmly mounted high-pressure side compressor element. The lubricant should be separated from the fluid before being transferred to the coolant circuit. Advantageously, the oil collected and separated in a (lubricant) reservoir may be returned to the compressor section via a valve and lubricant passage, resulting in improved lubrication of the compressor elements and reducing friction in the compressor section. Further advantageous by the separation of the lubricant from the fluid is an improved heat transfer to the heat exchanger of the refrigerant circuit, which increases the efficiency of the air conditioning (the air conditioning or air conditioning system).

For this purpose, a separation device for separating the lubricant contained in the fluid is introduced into the housing bottom, wherein the separation device has a cylindrical separator chamber connected to the outlet with a coaxially mounted therein separator.

The fluid flows out of the compressor part into a high-pressure chamber of the compressor housing downstream of this in terms of flow. The high-pressure chamber is fluidly coupled by means of a through-passage in a common intermediate wall of the deposition chamber and the high-pressure chamber to the separation device. The through-channel is introduced in such a way that it opens radially offset from the central center axis of the coaxially arranged in the deposition chamber and in particular cylindrical separator, which ensures a targeted guiding the flow along only one side of the separator.

In particular, the compressor is an electromotive refrigerant compressor for an air conditioning system of a vehicle. Operationally, the air conditioner is used, for example, to cool an interior of the vehicle or to cool an energy store for driving an electric motor-operated vehicle.

The heat exchanger is in thermal contact with any energy cells of a high-voltage energy storage or with a fan line, which leads into the interior of the motor vehicle. In this case, there is a transfer of thermal energy to the refrigerant, which leads to a cooling of the component in contact with the heat exchanger and to a heating of the refrigerant. The condenser is used to match the temperature of the refrigerant to the ambient temperature or at least a decrease in the temperature of the refrigerant and is preferably in thermal contact with the environment.

Suitably, the compressor part is designed as a scroll compressor. This works as a refrigerant compressor in the manner of a positive displacement pump, wherein an electric motor eccentrically drives a movable scroll member relative to a stationary scroll member, thereby compressing a fluid. The scroll parts form the compressor elements of the compressor part and are hereby typically designed as a nested spiral or scroll pair. In this case, one of the spirals is stationary with respect to the compressor housing and at least partially engages in a second, orbitally driven second spiral by means of an electric motor. Under an orbiting motion is in this case in particular an eccentric circular trajectory to understand, in which the second spiral itself does not rotate about its own axis. This results in each orbital movement between the spirals, two substantially crescent-shaped refrigerant chambers whose volume in the course of the movement reduce (compress). The refrigerant is discharged via an outlet in the fixed scroll part in the high-pressure chamber.

The lubricant is expediently a (lubricating) oil, the term oil not to be understood as limiting mineral oils. Rather, fully synthetic or semi-synthetic oils, such as silicone oils, or other oily liquids such as hydraulic fluid or coolants can be used.

The separation device separates the lubricant from the fluid in the manner of a centrifugal separator (cyclone separator). The fluid flowing tangentially into the deposition chamber is guided helically (cyclone-like) along the precipitator in the particularly cylindrical deposition chamber. Centrifugal forces act on the mixture of refrigerant and lubricant as a separation mechanism. In one conceivable embodiment, to prevent the uptake of particles of the already separated lubricant by the fluid flow, the lubricant reservoir is partially closed with a cone to form a ring slot.

In an expedient embodiment, the compressor housing with housing bottom and the deposition chamber of the separator are formed by a pressure-casting process. As a result, a particularly material-saving and cost-effective production is given.

In an expedient embodiment, the through-channel is introduced into the intermediate wall between the separation chamber and the high-pressure chamber in such a way that the conveyed fluid flows tangentially to the separator into the separation chamber, whereby a particularly suitable positioning of the through-channel is provided. The fluid flows under an angle, for example, less than 90 ° with respect to the housing bottom. Also, the passageway can be introduced into the intermediate wall such that the inflow direction of the fluid is perpendicular to the housing bottom, whereby the flow direction of the fluid through the passageway is substantially identical to the conveying direction of the fluid by means of the compressor part and less turbulence arises at the passageway. The direction of inflow here means the direction tangential to the separator, in which the fluid flows into the precipitator chamber.

The invention is based on the consideration that the undesired vortex formation in the annular space between the separator and the chamber inner wall of the deposition chamber can be considerably reduced if the flow of the fluid selectively passes along only one side of the separator. For this purpose, the passageway opening into the annular space should be positioned as completely as possible azimuthally offset from the diameter course of the separator.

In a preferred embodiment, the clear width of the passage channel does not exceed the gap width of an annular gap formed between the separator and an inner wall of the deposition chamber. In other words, the inside width of the through-channel is smaller than or equal to the gap width of the annular gap. As a result, the fluid flows in a particularly advantageous tangential manner into the annular gap and is guided in a targeted manner along only one side of the separator, as a result of which the vortex formation is considerably reduced.

In a suitable embodiment, the passage channel has an inner wall which is oriented tangentially to the inflow direction of the fluid into the annular gap. In other words, the inner wall of the passage channel is oriented parallel to the direction of flow of the fluid into the deposition chamber, which is why advantageously less turbulence arises when flowing in the passageway.

In an advantageous development, the cylindrical deposition chamber extends radially to the housing bottom of the suitable cup-shaped compressor housing. The passage is elongated along this radial direction. The flow cross-section formed by the inside width of the through-channel as the fluid flows from the high-pressure chamber into the separation chamber is adapted to the delivery volume of the fluid occurring during operation.

Since the flow cross-section formed by the clear surface of the passage channel of the high-pressure chamber in the deposition chamber should be adapted to the operating volume occurring according to volume and the inside diameter of the passage channel is preferably smaller than or equal to the gap width of the gap formed between the separator and the inner wall of the deposition chamber As a result, the passageway along the central center axis of the separator is elongated.

To avoid unwanted vortex formation, the through-channel is offset radially with respect to the center axis of the separation device or with respect to the center axis of the precipitator. The offset including the clear width of the passage channel is advantageously smaller than or equal to the radius of the cylindrical deposition chamber. As a result, the fluid flows tangentially into the gap formed between the separator and the inner wall of the deposition chamber. As a result, the fluid is selectively guided only on one side of the separator along a vortex-free path. A branch of a partial flow of the fluid is avoided, which would be guided along the separator in the direction opposite to the eddy-free flow Umströmungssinn, would collide with the eddy-free path and would lead to the formation of vortices.

The passage is particularly advantageous slot-like recess of the partition. The shape of the passage channel has, in an expedient embodiment, essentially a rectangular cross-sectional shape. In one conceivable embodiment, the cross-sectional shape of the through-channel is elliptical or oval. The shape of the passage channel is the operating flow rate adjusted so that the passage only changes its inside width along the axis of the deposition chamber. In other words, the through-channel between the deposition chamber and the high-pressure chamber is adapted to the operating volume of the refrigerant required in such a way that the pumped fluid flows through the separation chamber with only slight vortex formation.

In an expedient development, the separation chamber is formed between an inner wall of the housing bottom facing the compressor part and the high-pressure chamber, the deposition chamber projecting at least partially axially into the high-pressure chamber. As a result, a particularly space-saving and material-saving embodiment is formed.

In a preferred embodiment, the housing bottom has an annular wall which axially overhangs the deposition chamber, forming an inner and an outer annular region. The through-channel from the high-pressure chamber into the separation chamber is arranged radially offset in the inner ring region in the direction of the outlet, so that the fluid flow is guided particularly advantageously along a cyclone-like path around the separator of the deposition chamber. In particular, this achieves improved separation of the lubricant from the refrigerant.

Furthermore, the compressor part suitably rests on the annular wall. The high-pressure chamber is formed by the housing bottom and the annular wall and by the compressor part. In particular, additional, sealing elements of the high pressure chamber are not necessary, which is space-saving and fluidic particularly advantageous.

The advantages achieved by the invention are in particular that the vortex formation of the fluid flow in the deposition chamber is considerably reduced by the particularly suitable arrangement and design of the through-channel, taking into account the required delivery volume. In particular, the cross-sectional shape of the through-channel is adapted such that for the purpose of advantageous Einströmverhaltens the clear width of the through-channel does not exceed the gap width of the annular space formed between the separation chamber and the separator (annular gap) and is advantageously elongated along the axis of the deposition chamber.

As a result of the reduced vortex formation, the lubricant separates from the refrigerant improved and is not forwarded in the refrigerant circuit, which is why there is better heat transfer between the heat exchangers and the refrigerant in the refrigerant circuit. Furthermore, due to the improved separation, the lubrication of the compressor part is improved by the separated and recycled lubricant, resulting in a reduced wear and thus an increased life of the compressor follows. In addition, the efficiency of the compressor is improved.

• 1 einen Längsschnitt eines Verdichters mit einem Gehäuse sowie mit einem Verdichterteil und gehäusebodenseitig einer Abscheidevorrichtung,
• 2 in einer Draufsicht das Verdichtergehäuse mit Blick auf die bodenseitige Abscheidevorrichtung mit einem Durchgangskanal mit langlochartiger Querschnittsform,
• 3 in einer Schnittdarstellung entlang der Linie III-III in 2 die Abscheidevorrichtung und den Strömungspfad eines Fluids durch den Durchgangskanal und in der Abscheidevorrichtung, und
• 4 die Schnittdarstellung aus 3 mit zur Mittelachse der Abscheidevorrichtung versetztem Durchgangskanal und ohne den Strömungspfad des Fluids in der Abscheidevorrichtung.

An embodiment of the invention will be explained in more detail with reference to a drawing. Show:

• 1 a longitudinal section of a compressor with a housing and with a compressor part and housing bottom side of a separation device,
• 2 in a plan view of the compressor housing with a view of the bottom-side separator with a passageway with slot-like cross-sectional shape,
• 3 in a sectional view taken along the line III-III in 2 the separator and the flow path of a fluid through the passageway and in the separator, and
• 4 the sectional view 3 with the central axis of the separation device offset passage and without the flow path of the fluid in the separator.

Corresponding parts are always provided in all figures with the same reference numerals.

The in 1 in a sectional view shown compressor 2 for compressing a fluid F is preferably installed as an electromotive refrigerant compressor in a refrigerant circuit, not shown, an air conditioning system of a motor vehicle. The compressor 2 has a compressor housing 4 with a caseback 6 and one in the case 4 stored compressor part 8th on. The compressor part 8th has a first, with respect to the compressor housing 4 fixed compressor element 8a and a movable second compressor element engaging therein 8b on which by means of shaft journal 10 and a motor shaft 12 is moved by an electric motor, not shown. The compressor part 8th is executed here as a scroll compressor.

Inside the compressor 2 is a lubricant S available, which is used to lubricate the compressor part 8th serves and performs a sealing function, so that between the compressor elements 8a and 8b Leaks are avoided. Due to the operation, a refrigerant mixes K and the lubricant S to the fluid F ,

The compressor housing 4 is pot-shaped. The radial direction with respect to the compressor housing 4 and the axial direction perpendicular to the housing bottom 6 in the direction of the compressor part 8th are denoted by R and A respectively in the adjacent directional diagram.

In the case back 6 is a separator 14 introduced, which with an outlet 16 connected is. The separation device 14 has a cylindrical separation chamber 18 and a coaxial coaxial hollow separator 20 on. The separation device 14 serves to separate the fluid F contained lubricant S in a lubricant reservoir 26 in the manner of a centrifugal separator. The via a through-channel 27 into the deposition chamber 18 with an inflow direction e ( 3 ) incoming fluid F flows around in the deposition chamber 18 helical (cyclonic) the separator 20 in the direction of the lubricant reservoir 26 , where on the in the fluid F contained refrigerant K and on the fluid F contained lubricants S acting centrifugal force acts as a separation mechanism. Then it flows from the lubricant S separated refrigerant K through the hollow cylindrical separator 20 and the outlet 16 into the refrigerant circuit. Under the inflow direction e Here is the one to the separator 20 to understand tangential direction in which the fluid F into the separator chamber 18 flows.

The separated lubricant S is via a valve or a throttle 28 and via a lubricant channel 30 to the stationary compressor element 8b recycled. The throttle 26 sits in the compressor housing 4 one. The returned lubricant S then flows via guide contours to rolling bearings 32 the electric motor not shown in order to lubricate and / or to cool.

The axial direction of the separator 14 , So the axial direction of the cylindrical deposition chamber 18 and the coaxially arranged therein separator is designated by X. The radial direction of the separator 14 perpendicular to the inflow direction e and the radial direction of the separator 14 parallel to the inflow direction e are with Y respectively. Z designated ( 2 ).

Furthermore, the case bottom 6 a the deposition chamber 18 superior ring wall 34 on. This divides the through the fixed compressor part 8b and through the compressor housing 4 embraced space in an inner ring area 36 and in an outer ring area 38 , A high pressure chamber 40 is from the inner ring area 36 , bounded by the caseback 6 , the ring wall 34 and on the ring wall 34 resting compressor element 8b educated.

The deposition chamber 18 is between an inner wall 41 of the case bottom 6 and the high pressure chamber 40 formed, wherein the deposition chamber 18 at least partially in the axial direction A in the high pressure chamber 40 protrudes. The passageway 27 couples the high pressure chamber 40 fluidically with the deposition chamber 18 , The passageway 27 is in an intermediate wall 44 between the deposition chamber 18 and the high-pressure camera 40 introduced such that the passageway 27 along the radial direction Y the separator 14 to the axial direction X the separator 14 transferred to the deposition chamber 18 empties. Here is the passageway 27 in the inner ring area 36 the ring wall 34 arranged such that the passageway 27 in the axial direction X the separator 14 or in the radial direction R of the compressor housing 4 is offset to the outlet.

The fluid F flows on the low pressure side of the compressor part 8th through an inlet 46 in the compressor section 8th one. The compressor part 8th , which is a scroll compressor, compresses the fluid F in the manner of a positive displacement pump. The fluid F is in a compressor sub-chamber 47 then compressed and then flows out of the compressor section 8th by a high pressure side compressor part outlet 48 in the high pressure chamber 40 out.

The 2 shows the cup-shaped compressor housing 4 with removed compressor part 8th with view along the axial direction A on the case back 6 of the compressor housing 4 , The ring wall 34 towers over the separation device 14 forming the inner ring area 36 and the outer ring area 38 , With the in 2 Compressor part not shown 8th and the caseback 6 of the compressor housing 4 forms the ring wall 34 the high pressure chamber 40 ,

Furthermore, the compressor housing 4 along a flange surface 49 screw mounts 50 for fixing the compressor 2 to an unillustrated drive module, in which the motor of the compressor 2 is introduced. For the sake of clarity, in 2 only two screw holders 50 provided with a reference numeral.

The deposition chamber 18 runs in the radial direction R to the case back 6 of the compressor housing 4 , The passageway 27 is in the inner ring area 36 in the radial direction R to the outlet 16 the deposition chamber 18 offset and along the axial direction X the separator 14 elongated shape. The passageway 27 is as a slot-like recess of the partition 44 executed, wherein the recess has a substantially rectangular cross-sectional shape. The cross-sectional shape of the through-channel 27 can be designed slot-like or oval.

3 shows in a sectional view taken along the line III-III in 2 in the case back 6 of the compressor housing 4 introduced separating 14 overlooking the radially offset passageway 27 , This is recognizable in the intermediate wall 44 between the high pressure chamber 40 and deposition chamber 18 positioned that the pumped fluid F tangential to the separator 20 with the inflow direction e into the deposition chamber 18 flows.

In this case, the passageway 27 an inner wall 55 on, tangential to the inflow direction e of the fluid F is oriented in the passageway 27. In this embodiment, the fluid flows F so in the deposition chamber 18 one that both the inflow direction e as well as the inner wall 55 of the passageway 27 perpendicular to the housing bottom 6 are oriented. The side of the inner wall 55 of the passageway 27 whose distance c ( 4 ) to the radial direction or line shown in dashed lines Z the separator 14 parallel to the inflow direction e or in this embodiment, perpendicular to the housing bottom 6 is smaller, is with 55a (near-axis side). The opposite side of the inner wall 55 of the passageway 27 is with 55b (off-axis side).

The through the clear surface of the passageway 27 formed flow cross-section as the fluid flows F from the high pressure camera 40 into the deposition chamber 18 is adapted to the volume of service required by the company. To avoid vortex formation of the flow of the fluid F in the deposition chamber 18 is the passageway 27 thereby adapted to the operating volume required delivery volume that the clear width a of the passageway 27 preferably smaller than the gap width b ( a < b ) one between the separator 20 and an inner wall 56 the deposition chamber 18 formed annular gaps 58 is. However, the clear width can a also equal to the gap width b ( a = b ) be. In addition, the passageway 27 along the axial direction X the separator 14 elongated shape. As a result, the fluid flows F tangentially into the annular gap 58 one and only one side of the separator 20 along a vortex-free path 60 , This is a diversion of a second, in 3 indicated by the dashed arrows partial flow of the fluid F avoided, which along the separator 20 in to the invertebrate path 60 opposite Umströmungssinn would be guided and with the vortex-free path 60 would collide.

4 shows in the sectional view of 3 in the case back 6 introduced separating device 14 with the passageway 27 with the clear width a and through the inner wall 56 the deposition chamber 18 and the separator 20 formed gap with the gap width b ,

To avoid unwanted vortex formation, the fluid flows F tangential in between the separator 20 and the inner wall 56 the deposition chamber 18 formed annular gap 58 , The fluid F As a result, it is targeted only on one side of the separator 20 along a vortex-free path 60 guided ( 3 ). For this purpose, in this embodiment, the passageway 27 opposite the central axis X the separator 14 or with respect to the central axis X of the separator 20 along the radial direction Y the deposition device 14 offset, wherein the offset c together with the clear width a of the passageway 27 less than or equal to the radius d the deposition chamber 18 or its inner wall 56 is, that is, c + a ≤ d. In other words, the offset c the distance between the radial direction Z the separator 14 parallel to the inflow direction e and the central central axis X facing side 55a the inner wall 55 of the passageway 27 ,

The invention is not limited to the embodiments described above. On the contrary, other variants of the invention can be derived therefrom by the person skilled in the art without departing from the subject matter of the invention. In particular, all the individual features described in connection with the exemplary embodiments can also be combined with one another in other ways, without departing from the subject matter of the invention.

LIST OF REFERENCE NUMBERS

2

compressor

4

compressor housing

6

caseback

8th

compressor part

8a

first compressor element

8b

second compressor element

10

shaft journal

12

motor shaft

14

separating

16

outlet

18

deposition

20

separators

26

lubricant reservoir

27

Through channel

28

throttle

30

lubricant channel

32

roller bearing

34

ring wall

36

inner ring area

38

outer ring area

40

High-pressure chamber

41

Inner wall of the housing bottom

44

partition

46

inlet

47

Compressor part chamber

48

Verdichterteilauslass

49

flange

50

screw mounts

55

Inner wall of the passageway

55a

near-axis side of the inner wall

55b

Axially distant side of the inner wall

56

Inner wall of the deposition chamber

58

annular gap

60

Flow path of the fluid

A

Axial direction of the compressor housing

e

inflow

F

fluid

K

refrigerant

S

lubricant

M

Center axis of the separator

R

Radial direction of the compressor housing

X

Axial direction / center axis of the separator

Y

Radial direction of the separator perpendicular to the direction of flow

Z

Radial direction of the separator parallel to the direction of flow

a

clear width

b

gap width

c

Spacing / offset

d

Radius of the inner wall of the deposition chamber

Claims (11)

Compressor (2), in particular electromotive refrigerant compressor, for compressing a fluid (F), with a compressor housing (4) with a housing bottom (6), and with a compressor part (8) mounted in the compressor housing (4) for conveying the fluid (F) from a low-pressure side inlet (46) to a high-pressure side outlet (16), - wherein in the housing bottom (6) a separation device (14) is introduced, which is connected to the outlet (16) cylindrical Abscheidekammer (18) and a coaxially arranged therein separator (20) for separating contained in the fluid (F) lubricant ( 24), - Wherein a high-pressure chamber (40) of the compressor housing (4) by means of a passage channel (27) is fluidically coupled to the deposition chamber (18), and - wherein the passage channel (27) in such a manner in an intermediate wall (44) between the high-pressure chamber (40) and the Abscheidekammer (18) that this radially offset from the central center axis (M) of the separator (20) in the deposition chamber (18) empties. Compressor (2) to Claim 1 , characterized in that the through-channel (27) is positioned such that the conveyed fluid (F) flows tangentially to the separator (20) in the deposition chamber (18). Compressor (2) to Claim 1 or 2 , characterized in that the clear width (a) of the through-channel (27) is smaller than or equal to the gap width (b) of an annular gap (58) formed between the separator (20) and an inner wall (56) of the deposition chamber (18) , Compressor (2) after one of Claims 1 to 3 characterized in that the passageway (27) is radially offset from the central centerline (M) of the separator (20), the sum of the offset (c) and the clearance (a) of the passageway (27) being smaller than or is equal to the radius (d) of the deposition chamber (18). Compressor (2) after one of Claims 1 to 4 , characterized in that the passage channel (27) has an inner wall (55) which is oriented parallel to the inflow direction (E) of the fluid (F) and / or perpendicular to the housing bottom (6). Compressor (2) after one of Claims 1 to 5 , characterized in that the deposition chamber (18) is oriented radially to the housing bottom (6), wherein the passageway (27) along this radial direction (R) is elongated. Compressor (2) after one of Claims 1 to 6 , characterized in that the passageway (27) is a slot-like recess of the intermediate wall (44). Compressor (2) to Claim 7 , characterized in that the recess has a substantially rectangular cross-sectional shape. Compressor (2) after one of Claims 1 to 8th , characterized in that the deposition chamber (18) between an inner wall (41) of the Housing bottom (6) and the high-pressure chamber (40) is formed and at least partially protrudes into the high-pressure chamber. Compressor (2) after one of Claims 1 to 9 characterized in that - the housing bottom (6) has an annular wall (34) axially projecting the separation chamber (18) to form the high-pressure chamber, and - that the passage channel (27) is located inside the annular wall (34), in particular in the direction of the outlet ( 16) radially offset, is arranged. Compressor (2) to Claim 10 , characterized in that the compressor part (8) rests on the annular wall (34).

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