Semi-hermetic refrigerant compressor

Abstract

In order to improve a semi-hermetic refrigerant compressor, comprising a compressor unit and an electric motor, an overall housing which has a motor housing section for the electric motor and a compressor housing section for the compressor unit, a suction-side refrigerant path leading from a suction connection on the overall housing to the compressor unit and a pressure-side refrigerant path leading to a pressure connection of the compressor unit, in such a way that problems with particles entrained by the refrigerant from the refrigerant circuit are avoided, it is provided that an inlet for refrigerant to be supplied to a motor compartment in the motor housing section is arranged on the motor housing section in a region opposite the compressor housing section and that the inlet is provided with a cover which has an access guide element and a filter element for separating particles entrained by the refrigerant.

Description

[0001] The invention relates to a semi-hermetic refrigerant compressor, comprising a compressor unit and an electric motor, an overall housing which has a motor housing section for the electric motor and a compressor housing section for the compressor unit, a suction-side refrigerant path leading from a suction connection on the overall housing to the compressor unit and a pressure-side refrigerant path leading to a pressure connection of the compressor unit.

[0002] The problem with such semi-hermetic refrigerant compressors is that particles carried by the refrigerant are introduced into the electric motor and possibly also the compressor unit, which can cause damage there.

[0003] The invention is therefore based on the object of improving a semi-hermetic refrigerant compressor in such a way that problems with particles carried by the refrigerant from the refrigerant circuit can be avoided.

[0004] This object is achieved according to the invention in a semi-hermetic refrigerant compressor of the type described above in that an inlet for refrigerant to be supplied to a motor compartment in the motor housing section is arranged on the motor housing section in a region opposite the compressor housing section, and that the inlet is provided with a cover which has an access guide element and a filter element for separating particles entrained by the refrigerant. The advantage of the solution according to the invention is that the problems mentioned above can be avoided with such an inlet cover, which has a filter element for the particles entrained by the refrigerant.

[0005] An advantageous solution is that the cover overlaps an opening of the inlet facing the engine compartment and thus completely covers this opening.

[0006] No further details have been provided so far regarding the design of the cover.

[0007] An advantageous solution is that the cover has a frame that holds and fixes the filter element.

[0008] Preferably, the frame is designed such that it encompasses the opening of the inlet facing the engine compartment on its outer side.

[0009] No further details have been given yet regarding the design of the entrance.

[0010] Thus, an advantageous solution provides that the inlet, in particular through an inlet channel formed thereby, allows a refrigerant flow to impinge on the cover in a flow direction directed towards a rotor of the electric motor.

[0011] Such an inlet design has the advantage that the refrigerant flow thus directed can be optimally used for cooling the electric motor.

[0012] In particular, it is provided that the cover has a flow distribution element as an access guide element, which distributes a refrigerant flow passing through the inlet to areas of the filter element surrounding the flow distribution element, in order to allow the refrigerant to enter the engine compartment with the largest possible cross-section and the most uniform spatial distribution possible.

[0013] In particular, the inlet is designed in such a way that it allows the refrigerant flow to reach the flow distribution element so that it can optimally distribute the refrigerant flow.

[0014] No further details have been given yet regarding the design of the entrance.

[0015] Thus, an advantageous solution provides that the inlet has an inlet chamber which is intended to receive particles retained by the filter element, and that the cover engages over an opening of the inlet chamber facing the engine compartment.

[0016] Preferably, the inlet chamber is arranged downstream of an inlet channel of the inlet and is widened in the radial direction thereto.

[0017] In particular, the inlet chamber itself is directly adjacent to the filter element and can therefore directly absorb the particles retained by the filter element.

[0018] Preferably, the inlet chamber is provided with a collection area for particles retained by the filter element, so that the particles do not significantly interfere with the further filtering action of the filter element. Preferably, the collection area is provided at the lowest point of the inlet chamber in the direction of gravity.

[0019] In order to optimally feed the particles, in particular those deflected by the flow distribution element, to the collection area, it is preferably provided that the cover has a particle guide element as an access guide element, which extends from the flow distribution element to a collection area of ​​the inlet chamber and thus feeds the particles to the collection area as efficiently as possible.

[0020] Furthermore, it is preferably provided that the cover has a shielding element as an access guide element, which delimits the collection area for particles filtered from the refrigerant flow by the filter element and deposited in the collection area of ​​the inlet chamber.

[0021] It is particularly advantageous if the shielding element reduces, in particular prevents, the particles settling in the collection area of ​​the inlet chamber from flowing through part of the refrigerant flow.

[0022] No further details have been provided so far regarding the design of the filter element.

[0023] An advantageous solution is that the filter element is made of a wire mesh or wire mesh.

[0024] A wire mesh or wire mesh provides an optimal way to design the filter element with the smallest possible openings for the refrigerant in order to optimally filter out the particles from the refrigerant.

[0025] Preferably, the wire mesh or wire mesh of the filter element extends to the frame and is held thereto. No further details have been provided to date regarding the arrangement of the flow distribution element relative to the filter element.

[0026] It is preferably provided that the flow distribution element is arranged in front of the filter element in the flow direction and partially covers it.

[0027] It is particularly advantageous if the flow distribution element is arranged on the filter element and partially covers it, in particular rests against the filter element.

[0028] With regard to the arrangement of the particle deflection element, it is also advantageous if the particle deflection element is arranged in front of the filter element in the flow direction and partially covers it.

[0029] It is also advantageous for the particle deflection element to be in contact with the filter element itself.

[0030] Furthermore, it is also advantageous with regard to the shielding element if the shielding element is arranged in front of the filter element in the flow direction and partially covers it.

[0031] It is also advantageous for the arrangement of the shielding element if it is arranged adjacent to the filter element.

[0032] A particularly advantageous solution provides that the flow distribution element and / or the particle deflection element and / or the shielding element are part of an access control mask.

[0033] The access control mask can be a separate element that rests against the cover and is, in particular, connected to the cover. In particular, the cover is designed to enclose the access control mask.

[0034] As an alternative to providing a knitted fabric or woven fabric for the filter element, a further solution provides that the filter element is formed by a thin flat material or, in particular, a film held, for example, by the frame.

[0035] The thin flat material, especially the foil, could already be a porous material.

[0036] A particularly advantageous solution provides that the filter element is formed by passages introduced into the thin flat material, in particular the foil.

[0037] Such passages can be easily introduced into the thin flat material, especially the film, by laser processing.

[0038] In the case that the passages are specifically introduced into the thin flat material, in particular the film, it is particularly advantageous if the flow distribution element is integrated into the thin flat material, in particular the film.

[0039] This can be easily integrated into the film by providing fewer or no openings at the location of the flow distribution element.

[0040] Furthermore, the particle deflection element can also be easily integrated into the thin flat material, in particular the film, by providing fewer or no openings at that location. Furthermore, the shielding element can also be conveniently integrated into the thin flat material, in particular the film, likewise by providing fewer or no openings at that location.

[0041] In order to be able to remove the particles collecting in the inlet chamber, in particular in the collection area thereof, it is preferably provided that the inlet chamber is provided with an external access opening in addition to the inlet, so that it is possible to suck or rinse the particles out of the inlet chamber independently of the inlet.

[0042] It is particularly advantageous if the external access opening is located in the area of ​​the collection area in the inlet chamber.

[0043] It is particularly advantageous if the external access opening opens into the collection area of ​​the inlet chamber.

[0044] Preferably, the access opening can be closed by a closure body.

[0045] A further advantageous solution provides that the collection area of ​​the inlet chamber is adjoined by a receiving space which penetrates into the lid, so that the receiving space creates even more space for receiving the particles and thus the intervals for removing the particles can be extended.

[0046] Furthermore, the receiving space also creates the possibility that it extends through the entire cover and is accessible from a side of the cover facing away from the engine compartment, so that an enlarged access to the receiving space is available, which can then be covered and closed in particular by a closure element that can be fixed to the cover.

[0047] The above description of solutions according to the invention thus includes in particular the various combinations of features defined by the following numbered embodiments: 1. Semi-hermetic refrigerant compressor, comprising a compressor unit (54) and an electric motor (42), an overall housing (10) which has a motor housing section (14) for the electric motor (42) and a compressor housing section (12) for the compressor unit (54), a suction-side refrigerant path leading from a suction connection (32) on the overall housing (10) to the compressor unit (54) and a pressure-side refrigerant path leading to a pressure connection of the compressor unit (54), wherein an inlet (34) for refrigerant to be supplied to a motor compartment (36) in the motor housing section (14) is arranged on the motor housing section (14) in a region opposite the compressor housing section (12), and that the inlet (34) is provided with a cover (112) which has an access guide element (136, 144, 146) and a filter element (118) for separating particles entrained by the refrigerant. 2.Refrigerant compressor according to embodiment 1, wherein the cover (112) engages over an opening (106) of the inlet (104) facing the engine compartment (36). 3. Refrigerant compressor according to embodiment 1 or 2, wherein the cover (112) has a frame (114) holding and fixing the filter element (118). 4. Refrigerant compressor according to embodiment 3, wherein the frame (114) engages around the opening (106) of the inlet (34) facing the engine compartment (36) on an outer side. 5. Refrigerant compressor according to one of the preceding embodiments, wherein the inlet (34) allows the refrigerant to impinge on the cover (112) in a flow direction directed toward a rotor (46) of the electric motor (42). 6.Refrigerant compressor according to one of embodiments 3 to 5, wherein the cover (112) has a flow distribution element (136) as an access guide element, which distributes a refrigerant flow passing through the inlet (34) to regions of the filter element (118) surrounding the flow distribution element (136). 7. Refrigerant compressor according to one of the preceding embodiments, wherein the inlet (34) is designed such that it allows the refrigerant flow to impinge on the flow distribution element (136). 8. Refrigerant compressor according to one of the preceding embodiments, wherein the inlet (34) has an inlet chamber (104) provided for receiving particles retained by the filter element (118), and wherein the cover (112) engages over an opening (106) of the inlet chamber (104) facing the engine compartment (36). 9.Refrigerant compressor according to embodiment 8, wherein the inlet chamber (104) is provided with a collection area (122) for particles retained by the filter element (118). 10. Refrigerant compressor according to embodiment 8 or 9, wherein the cover (112) has a particle guide element (144) as an access guide element, which extends from the flow distribution element (136) to a collection area (122) of the inlet chamber (104). 11. Refrigerant compressor according to one of embodiments 8 to 10, wherein the cover (112) has a shielding element (146) as an access guide element, which delimits a collection area (122) for particles filtered from the refrigerant flow by the filter element (118) and deposited in the collection area (112) of the inlet chamber (104).Refrigerant compressor according to embodiment 11, wherein the shielding element (146) reduces, in particular prevents, a portion of the refrigerant flow from flowing through the particles settling in the collection region (122) of the inlet chamber (104). 13. Refrigerant compressor according to one of the preceding embodiments, wherein the filter element (118) is made of a wire mesh or knitted wire fabric. 14. Refrigerant compressor according to embodiment 13, wherein the wire mesh or knitted wire fabric of the filter element (118) extends to the frame (114) and is held thereon. 15. Refrigerant compressor according to one of embodiments 6 to 14, wherein the flow distribution element (136) is arranged upstream of the filter element (118) in the flow direction and partially covers it. 16. Refrigerant compressor according to one of embodiments 6 to 15, wherein the particle guide element (144) is arranged upstream of the filter element (118) in the flow direction and partially covers the latter.17. Refrigerant compressor according to one of embodiments 6 to 16, wherein the shielding element (146) is arranged upstream of the filter element (118) in the flow direction and partially covers the latter. 18. Refrigerant compressor according to one of embodiments 6 to 17, wherein the flow distribution element (136) and / or the particle deflection element (144) and / or the shielding element (146) are part of an access control mask (128). 19. Refrigerant compressor according to embodiment 18, wherein the cover element (112) comprises the access control mask (128). 20. Refrigerant compressor according to one of the preceding embodiments, wherein the filter element (118) is formed by a thin flat material (162). 21. Refrigerant compressor according to embodiment 20, wherein the filter element (118) is formed by openings (164) introduced into the thin flat material (162). 22.Refrigerant compressor according to one of embodiments 19 to 21, wherein the flow distribution element (136) is integrated into the thin flat material (162). 23. Refrigerant compressor according to one of embodiments 19 to 22, wherein the particle deflection element (144) is integrated into the thin flat material (162). 24. Refrigerant compressor according to one of embodiments 19 to 23, wherein the shielding element (146) is integrated into the thin flat material (162). 25. Refrigerant compressor according to one of embodiments 8 to 24, wherein the inlet chamber (104) is provided with an external access opening (148) provided in addition to the inlet (34). 26. Refrigerant compressor according to embodiment 25, wherein the external access opening (148) is arranged in the region of the collecting region (122) of the inlet chamber (104). 27. Refrigerant compressor according to embodiment 26, wherein the external access opening (148) opens into the collection area (122) of the inlet chamber (104). 28.Refrigerant compressor according to embodiment 26 or 27, characterized in that the external access opening (148) can be closed by a closure body (152). 29. Refrigerant compressor according to one of embodiments 8 to 28, wherein a receiving space (154) adjoins the collecting region (122) of the inlet chamber (104), which in particular passes through the cover (24) and is in particular accessible from a side of the cover (24) facing away from the motor compartment (36). 30. Refrigerant compressor according to embodiment 27, wherein the receiving space (154) can be closed by a closure element (158) that can be fixed to the cover (24).

[0048] Further features and advantages of the invention are the subject of the following description and the drawings of some embodiments.

[0049] The drawing shows: Fig. 1 a side view of a semi-hermetic refrigerant compressor according to the invention; Fig. 2 a longitudinal section through the refrigerant compressor; Fig. 3 an enlarged view of the area A in Fig. 2 with representation of a first embodiment of a cover; Fig. 4 a perspective view of a half-side section through a cover closing off an engine compartment with the first embodiment of the cover according to the invention; Fig. 5 an access control mask of the first embodiment of the cover according to the invention; Fig. 6 a plan view in the flow direction of the access control mask of the first embodiment of the cover element according to the invention; Fig. 7 a plan view opposite to the flow direction of the first embodiment of the cover according to the invention; Fig. 8 a representation similar Fig. 3 of the second embodiment of the cover according to the invention with an external access opening to the collection area of ​​an inlet chamber; Fig. 9 a representation similar Fig. 8 of the third embodiment of a cover according to the invention with a receiving space for particles adjoining the collection area of ​​the inlet chamber and passing through the cover, and Fig. 10 is a plan view of a fourth embodiment of a cover according to the invention.

[0050] One in Fig. 1 The illustrated embodiment of a semi-hermetic refrigerant compressor according to the invention comprises an overall housing 10, which comprises a compressor housing section 12 and a motor housing section 14.

[0051] The overall housing 10 is formed, for example, by a housing sleeve 16 comprising both the compressor housing section 12 and the motor housing section 14, which is closed by a cover 22 on the side of the compressor housing section 12 and by a cover 24 on the side of the motor housing section 14.

[0052] On the cover 24 closing the motor housing section 14, a suction gas connection, designated as a whole by 32, for example designed as a suction gas valve, is provided, through which, as in Fig. 2 shown, sucked-in suction gas is fed via an inlet 34 to a motor compartment 36, in which an electric motor, designated as a whole by 42, comprising a stator 44 and a rotor 46 rotatable about an axis 48, is cooled by the suction gas flowing through the motor compartment 36, which is then fed via a suction gas channel 52 provided in the compressor housing section 12 to a compressor unit 54 provided in the compressor housing section 12, for example designed as a piston compressor, which has a plurality of cylinders 56 1 , 58 1 , which are closed by a conventional cylinder head 62, wherein the cylinders 56 1 , 58 1 suck in and compress the refrigerant flowing into the cylinder head 62 via the suction gas channel 52 and feed compressed refrigerant via the cylinder head 62 to a pressure gas channel 64, from which the pressure gas flows into a pressure gas connection 66, for example designed as a pressure gas valve, occurs.

[0053] To drive the compressor unit 54, a drive shaft 74 extends in a drive chamber 72 of the compressor housing section, which drives the cylinders 56 1 , 58 1 via eccentrics 76 1 and 78 1 .

[0054] The drive shaft 74 is mounted in a shaft bearing 82 held on the cover 22 and a shaft bearing 84 arranged between the compressor housing section 12 and the motor housing section 14 and extends with a drive section 86 into the rotor 46, which is rotatably mounted about the axis 48 by the drive section 86.

[0055] As in Fig. 1 and 2As shown, for example, the cover 24 closing the motor housing section 14 on its side opposite the compressor housing section 12 is pot-shaped and comprises, for example, a section 92 directly adjoining the motor housing section 14, which extends from the motor housing section 14 to a closing body 94 closing the cylindrical section 92 at the end and merges into the latter.

[0056] The section 92 is designed, for example, such that it engages over the winding heads 96 of the stator 44 facing the cover 24, which extend into the cover 24 to such an extent that a gap 98 remains between the winding heads 96 and the end body 94.

[0057] As in Fig. 3 As shown, the inlet 34 comprises an inlet channel 102 which widens from the suction connection 32 in the direction of the engine compartment 36 and is adjoined by an inlet chamber 104 which widens radially relative to the inlet channel 102 and has an opening 106 facing the engine compartment 36.

[0058] Preferably, the inlet channel 102 is arranged approximately in relation to the rotor 46 such that the refrigerant flow passing through it is directed towards the drive section 86, and in the same way the inlet chamber 104 adjoining it is also aligned with its opening 106 facing the motor compartment 36.

[0059] The opening 106 is covered by a cover designated as a whole by 112, which, as in Fig. 4 shown, completely covers the opening 106 and comprises an outer frame 114 which lies tightly against the closing body 94 of the cover 24 radially outside the opening 106 and is held, for example, by means of screws 116.

[0060] In addition to the frame 114, the cover 112 comprises a filter element 118 which is held clamped by the frame 114 and through which the refrigerant entering on the suction side flows and which filters out particles entrained by the refrigerant supplied on the suction side before the refrigerant enters the engine compartment 36, so that the filtered-out particles collect in the inlet chamber 104, preferably in a collection area 122 located below the inlet channel 102 in the direction of gravity.

[0061] Preferably, the filter element 118 is formed from a filter material having a size of the passages of less than 250 µm, even better less than 200 µm and preferably in the range of approximately 150 µm.

[0062] The filter element 118 is expediently formed by a fabric of metal wires, in particular a so-called dutch weave, in which warp wires are stronger than the weft wires in order to obtain the desired small mesh size for the passages.

[0063] In order to optimally distribute the refrigerant flowing in via the inlet opening 102 to the rotor 46 and the stator 44 for cooling the same, in the first embodiment of the refrigerant compressor according to the invention the cover 112 comprises an access guide mask 128 covered by the filter element 118 ( Fig. 5 ), which has an outer frame 134 which is approximately congruent with the frame 114 and on which, on the one hand, a flow distribution element 136 is held as an access guide element, which distributes the coolant flow directed through the inlet channel 102 in the direction approximately towards the drive section 86 radially outwards, in such a way that a part of the coolant flow flows around the winding heads 96 and flows radially outwards through the intermediate space 98 around the stator 44 and a part strikes the rotor 46 on the front side and passes at least between the rotor 46 and the stator 44 in order to cool the electric motor 42.

[0064] This flow distribution element 136 is, for example, as shown in Fig. 6 shown, formed by an approximately circular disc which is connected to the frame 134 via retaining webs 142 and 144.

[0065] The flow distribution element 136 also serves as impact protection or wear protection in order to protect the components that would otherwise be directly exposed to the refrigerant flow.

[0066] Preferably, the retaining web 144 extending from the flow distribution element 136 in the direction of gravity is widened and is a particle guide element serving as a further access guide element in order to guide the particles striking the flow distribution element 136 in the direction of the collection area 122.

[0067] Furthermore, the particle guide element 144 preferably merges into a shielding element 146 serving as a further access guide element, which reduces the flow through the collection area 122 and thus the flow through the particles settling in this collection area 122 by refrigerant, wherein the shielding element 146 preferably also has a closed sickle-like shape and is formed onto the frame 134.

[0068] The frame 134 of the shielding element 146 is connected to the frame 114, so that the combination of the frame 114 with the filter element 118 and the access control mask 128 Fig. 7 illustrated cover 112' according to the first embodiment.

[0069] In a first variant of the first embodiment, it is provided to connect both the filter element 118 and the access control mask 128 to the frame 114.

[0070] In a second variant of the first embodiment, it is provided to connect the access control mask 128 directly to the filter element 118, in particular to fix it to the filter element, without a direct connection between the frame 114 and the access control mask 128.

[0071] In a third variant of the first embodiment, it is provided to install the frame 114 with the filter element 118 and the frame 134 with the access control mask 128 as separate parts.

[0072] In a second embodiment of a refrigerant compressor according to the invention, shown in Fig. 8 , the collection area 122 is accessible through an access opening 148 formed in the closure body 94 of the cover 24 and passing through the closure body 94 in order to remove the separated particles collecting in the collection area 122.

[0073] The access opening 148 can be closed by a closure body 152.

[0074] Furthermore, in the second embodiment, those elements which are identical to the elements of the preceding embodiments are provided with the same reference numerals, so that with regard to the description thereof, reference can be made in full to these embodiments.

[0075] In contrast to the preceding embodiments, in a third embodiment, shown in Fig. 9 , of the refrigerant compressor according to the invention, a receiving space 154 is arranged in the closing body 94 of the cover 24 following the collecting area 122, which receiving space extends to a side 156 of the closing body 94 of the cover 24 facing away from the motor compartment 36 and can be closed by a closure element 158, so that a large number of particles pass from the collecting area 122 into the receiving space 154 and can be removed from it after removal of the closure element 158.

[0076] Furthermore, in this embodiment, too, those elements which are identical to those of the preceding embodiments are provided with the same reference numerals, so that with regard to the description thereof, reference can be made in full to the statements relating to the preceding embodiments.

[0077] In a fourth embodiment of a cover 112' according to the invention, shown in Fig. 10is held, for example, on the frame 114' thin flat material, in particular a film 162, in which the areas of the filter element 118' are formed by passages 164 incorporated into the film 162 or already present in the film 162, while the flow distribution element 136', the particle guide element 144' and the shielding element 146' are formed by areas of the film 162 in which no or fewer passages 164 are incorporated, so that the film 162 forms, on the one hand, the filter element 118' and, on the other hand, simultaneously also the elements of the access control mask 128.

[0078] In the case of a thin flat material 162, the frame 114' can also be omitted if it has sufficient inherent rigidity.

Claims

1. Semi-hermetic refrigerant compressor, comprising a compressor unit (54) and an electric motor (42), an overall housing (10) which has a motor housing section (14) for the electric motor (42) and a compressor housing section (12) for the compressor unit (54), a suction-side refrigerant path leading from a suction connection (32) on the overall housing (10) to the compressor unit (54) and a pressure-side refrigerant path leading to a pressure connection of the compressor unit (54), characterized in that an inlet (34) for refrigerant to be supplied to a motor compartment (36) in the motor housing section (14) is arranged on the motor housing section (14) in a region opposite the compressor housing section (12), and in that the inlet (34) is provided with a cover (112) which has an access guide element (136, 144, 146) and a filter element (118) for separating particles entrained by the refrigerant.

2. Refrigerant compressor according to claim 1, characterized in that the cover (112) overlaps an opening (106) of the inlet (104) facing the engine compartment (36).

3. Refrigerant compressor according to claim 1 or 2, characterized in that the cover (112) has a frame (114) holding and fixing the filter element (118), in particular that the frame (114) surrounds the opening (106) of the inlet (34) facing the engine compartment (36) on an outer side.

4. Refrigerant compressor according to one of the preceding claims, characterized in that the inlet (34) allows the refrigerant to impinge on the cover (112) in a flow direction directed towards a rotor (46) of the electric motor (42).

5. Refrigerant compressor according to one of claims 3 or 4, characterized in thatthe cover (112) has a flow distribution element (136) as an access guide element, which distributes a refrigerant flow passing through the inlet (34) to areas of the filter element (118) surrounding the flow distribution element (136).

6. Refrigerant compressor according to one of the preceding claims, characterized in that the inlet (34) is designed such that it allows the refrigerant flow to impinge on the flow distribution element (136).

7. Refrigerant compressor according to one of the preceding claims, characterized in thatthe inlet (34) has an inlet chamber (104) which is provided for receiving particles retained by the filter element (118), and that the cover (112) engages over an opening (106) of the inlet chamber (104) facing the engine compartment (36), in particular that the inlet chamber (104) is provided with a collection area (122) for particles retained by the filter element (118) and / or that in particular the cover (112) has, as an access guide element, a particle guide element (144) which extends from the flow distribution element (136) to a collection area (122) of the inlet chamber (104).

8. Refrigerant compressor according to claim 7, characterized in thatthe cover (112) has, as an access guide element, a shielding element (146) which delimits a collection area (122) for particles filtered from the refrigerant flow by the filter element (118) and settling in the collection area (112) of the inlet chamber (104), in particular that the shielding element (146) reduces, in particular prevents, a flow through of the particles settling in the collection area (122) of the inlet chamber (104) by part of the refrigerant flow.

9. Refrigerant compressor according to one of the preceding claims, characterized in that the filter element (118) is made of a wire mesh or wire mesh, in particular that the wire mesh or wire mesh of the filter element (118) extends to the frame (114) and is held thereon.

10. Refrigerant compressor according to one of claims 5 to 9, characterized in thatthe flow distribution element (136) is arranged in front of the filter element (118) in the flow direction and partially covers it.

11. Refrigerant compressor according to one of claims 5 to 10, characterized in that the particle guide element (144) is arranged in front of the filter element (118) in the flow direction and partially covers it.

12. Refrigerant compressor according to one of claims 5 to 11, characterized in that the shielding element (146) is arranged in front of the filter element (118) in the flow direction and partially covers it.

13. Refrigerant compressor according to one of claims 5 to 12, characterized in that the flow distribution element (136) and / or the particle deflection element (144) and / or the shielding element (146) are part of an access control mask (128), in particular that the cover element (112) comprises the access control mask (128).

14. Refrigerant compressor according to one of the preceding claims, characterized in thatthe filter element (118) is formed by a thin flat material (162), in particular that the filter element (118) is formed by openings (164) introduced into the thin flat material (162).

15. Refrigerant compressor according to one of claims 13 or 14, characterized in that the flow distribution element (136) is integrated into the thin flat material (162).

16. Refrigerant compressor according to one of claims 13 to 15, characterized in that the particle deflection element (144) is integrated into the thin flat material (162).

17. Refrigerant compressor according to one of claims 13 to 16, characterized in that the shielding element (146) is integrated into the thin flat material (162).

18. Refrigerant compressor according to one of claims 7 to 17, characterized in thatthe inlet chamber (104) is provided with an external access opening (148) provided in addition to the inlet (34), in particular that the external access opening (148) is arranged in the region of the collection area (122) of the inlet chamber (104) and / or that in particular the external access opening (148) opens into the collection area (122) of the inlet chamber (104), and / or that in particular the external access opening (147) can be closed by a closure body (152).

19. Refrigerant compressor according to one of claims 7 to 18, characterized in that adjoining the collecting region (122) of the inlet chamber (104) is a receiving space (154), which in particular passes through the cover (24) and is in particular accessible from a side of the cover (24) facing away from the engine compartment (36), in particular that the receiving space (154) can be closed by a closure element (158) which can be fixed to the cover (24).

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