Storage, preferably for motor vehicle

Abstract

The invention relates to a reservoir, preferably for a motor vehicle, for separating a gaseous part and a liquid part of a refrigerant from one another and / or for collecting and storing the refrigerant, comprising a cylinder (Z), a suction tube (SR). Wherein the cylinder (Z) has a lower cylinder head (ZDU). Wherein the suction tube (SR) is arranged within the cylinder (Z). Wherein a refrigerant flows through the suction tube (SR). According to the invention, the suction pipe (SR) has a deflection region (UB) for the refrigerant below, the deflection region (UB) and the lower cylinder head (ZDU) being integrally molded or connected to one another. The deflection region (UB) has an oil hole (OB). The structural unit (100) has an internal heat exchanger (HW) and a memory (A). According to the invention, the use of the accumulator (A) in a refrigerant circuit of a motor vehicle is specified.

Description

Technical Field

[0001] The invention relates to an accumulator and an assembly, preferably for a motor vehicle, for collecting and storing a refrigerant and for separating a liquid portion from a gaseous portion of the refrigerant, and to the use in a refrigerant circuit. Background Art

[0002] Document DE 10 2014 113 793 A1 describes a reservoir for a refrigerant circuit of a motor vehicle. The reservoir has a cylinder (storage container) and a suction pipe (suction pipe device) arranged in the cylinder. The suction pipe is formed by an outer tube (suction pipe) and an inner tube (suction pipe), which are arranged coaxially and spaced apart from each other and connected to each other at the lower end of the tube by a connector (connecting piece) to form a flow path. In the connector, oil holes (oil trough holes) are arranged radially, and the oil holes connect the oil trough area of ​​the reservoir container with the flow path in the suction pipe. The oil holes are arranged in the connector at the height of the spacing between the lower end of the inner tube and the lower end of the connector. The connector is surrounded by a filter in the area of ​​the oil holes. By arranging the oil holes at the height of the spacing between the lower end of the inner tube and the lower end of the connector, an unnecessarily large spacing from the oil holes to the bottom of the cylinder is generated. Due to this unnecessarily large spacing, the available volume of the reservoir / cylinder for storing refrigerant is reduced. Because the area below the cylinder is not shaped like a cover and is not connected to the connector, the available volume is further reduced. The refrigerant circuit may include movable components such as a compressor. Oil is required to lubricate the movable components to ensure trouble-free operation. This oil is added to the refrigerant. Liquid oil is heavier than gaseous refrigerant and is deposited in the oil sump at the lower end of the storage device. The oil can be sucked by the compressor through the oil hole. It is possible that particles or dirt particles gather at the lower end of the cylinder. Because particles are heavier than liquid oil. Particles can be, for example, wear objects from pipelines, wear particles from the compressor, and debris that may also exist due to the production process. Due to the unfavorable large spacing between the oil hole and the cylinder bottom and the shape of the cylinder, a filter is needed to filter out particles from the oil and therefore, for example, protect the compressor from damage. Summary of the invention

[0003] In contrast, the device according to the invention having the features of the independent claim has the advantage that the available volume in the reservoir for storing the refrigerant and for phase separation is maximized compared to the outer dimensions of the reservoir and an additional filter for filtering the oil can be omitted in most applications.

[0004] The starting point of the present invention is a storage device. The storage device according to the present invention for separating the gaseous part and the liquid part of the refrigerant from each other and / or for collecting and storing the refrigerant can be preferably used in a motor vehicle. The storage device according to the present invention has a cylinder and a suction pipe. The cylinder has a lower cylinder cover. The suction pipe is arranged inside the cylinder. The suction pipe is traversed by the refrigerant. According to the present invention, the suction pipe has a deflection area for the refrigerant at the bottom, wherein the deflection area and the lower cylinder cover are integrally molded or connected to each other. The cylinder can be a cylinder with two parallel covers. The cylinder can be made of plastic. The housing of the storage device can be arranged around the cylinder. The housing can be composed of a tube with two covers and made of an aluminum alloy. The refrigerant circuit can have a condenser for condensing the refrigerant, a storage device according to the present invention, an expansion valve for reducing the refrigerant pressure, an evaporator for evaporating the refrigerant, a compressor for compressing the refrigerant and a connected pipeline. The refrigerant circuit can be traversed by the refrigerant. It is conceivable that the refrigerant circuit is traversed by R1234yf, for example. As an alternative to this, it is possible that carbon dioxide (R744) flows through the refrigerant circuit. The refrigerant can be stored in a reservoir or cylinder according to the invention and released again when required. The reservoir and cylinder according to the invention can be designed in such a way that a phase separation of the refrigerant with a gaseous part and a liquid part can also occur in them due to gravity. With the help of the deflection area of ​​the suction tube, the flow of the refrigerant in the suction tube can be deflected in or against the axial direction. The axial direction can extend in the direction of gravity.

[0005] In a first embodiment of the reservoir according to the invention, the deflection region and the lower cylinder cover can be molded in one piece. It is conceivable that the deflection region and the lower cylinder cover are made of plastic and are manufactured by means of an injection molding process. Since the deflection region and the lower cylinder cover are designed in one piece, the volume of the cylinder available for the storage and phase separation of the refrigerant can be advantageously enlarged with the same external dimensions of the reservoir according to the invention, because the two components together occupy a smaller structural space in the reservoir according to the invention.

[0006] In a second embodiment of the reservoir according to the invention, the deflection region and the lower cylinder cover can be connected, for example, by means of a force-locking connection. It is conceivable that the deflection region and the lower cylinder cover are made of plastic and are manufactured by means of an injection molding process. The two components can be connected to each other by means of a press fit.

[0007] In this way, the volume of the cylinder available for storage of refrigerant and phase separation can be advantageously enlarged with the same external dimensions of the reservoir according to the invention, because the two components together occupy a smaller structural space in the reservoir according to the invention. In the refrigerant circuit, a change in the static operating point may occur, for example due to a change in the temperature outside the condenser for condensing the refrigerant. When the operating point changes, a displacement of the refrigerant in the circuit may occur. This means that the refrigerant can be moved into or out of the reservoir according to the invention. This dynamic is highly nonlinear and is taken into account when designing the refrigerant circuit. By expanding the available volume for storing refrigerant, the design of the refrigerant circuit can be simplified. Because a larger volume is provided for storing a possible amount of refrigerant. The phase separation of the refrigerant can at least be improved by expanding the available volume in the reservoir according to the invention.

[0008] According to the invention, the deflection region can have an oil hole. In order to lubricate movable components such as a compressor in a refrigerant circuit, oil can be added to the refrigerant. The compressor of the refrigerant circuit can draw oil through a suction tube with the aid of the oil hole. Liquid oil is heavier than liquid refrigerant and sinks deeper in the storage device or cylinder according to the invention due to gravity than the lighter refrigerant. The liquid part of the oil and the liquid part of the refrigerant can be separated from each other in this way. The storage device according to the invention has a suction tube equipped with a deflection region. The liquid oil is completely collected in the cylinder at the bottom. The deflection region and the lower cylinder cover are integral or connected to each other. In this way, a sufficiently large volume for the required liquid oil can be created and the volume available for the storage and phase separation of the mixture consisting of refrigerant and oil can also be further expanded in an advantageous manner.

[0009] According to the invention, the deflection region of the suction pipe can have an axial height, wherein the oil hole can be arranged above or below half of the axial height. The axial height of the deflection region can extend in the direction of the axial height. The axial height can extend from the upper end of the deflection region to the lower cylinder head.

[0010] In another embodiment of the reservoir according to the invention, the oil opening can be arranged above half the axial height. Particles, dirt particles and foreign bodies collect completely at the bottom in the cylinder. By arranging the oil opening above half the axial height, the suction of dirty oil by the compressor through the oil opening can be at least reduced.

[0011] In another embodiment of the reservoir according to the invention, the oil opening can be arranged below half the axial height. In this way, the volume available for the storage and phase separation of the mixture of refrigerant and oil can also be advantageously further enlarged. The liquid oil collects completely at the bottom in the cylinder. By arranging the oil opening below half the axial height, it can be ensured that only oil can be sucked in by the compressor via the suction pipe through the oil opening.

[0012] In another embodiment of the reservoir according to the invention, the suction tube can be molded in one piece. The suction tube can be manufactured cost-effectively from plastic using an injection molding process. The suction tube can have two radially adjacent flow paths and a deflection region. In the first of the two flow paths, the refrigerant can flow in the axial direction. The refrigerant can then be deflected in the deflection region and flow in the second flow path against the axial direction. The one-piece suction tube can be connected to the lower cylinder cover in a force-locking manner.

[0013] In another embodiment of the reservoir according to the invention, the suction tube can be molded in at least two parts. The suction tube can have a double tube and a connector. Therein, the connector represents a turning area. The double tube can have two flow paths arranged radially side by side or coaxially and a turning area. In the first of the two flow paths, the refrigerant can flow in the axial direction. The refrigerant can then turn in the turning area and flow in the second flow path against the axial direction. The turning area can be molded as a connector and the connector can be connected to the lower cylinder cover in a force-locking manner. The double tube and the connector can be made of plastic and connected to each other in a force-locking manner. The connector can have an oil hole.

[0014] In another embodiment of the reservoir according to the invention, the suction tube can have at least one tube. The deflection region is molded as a connector. The connector is connected to at least one tube. The suction tube can have two radially spaced tubes. In the first tube, the refrigerant can flow in the axial direction and in the second tube in the opposite direction. The suction tube with the tubes and the connector can be made of plastic. The second tube can be connected to the connector in a force-locking manner. The connector can be connected to the lower cylinder cover. It is also possible that the oil hole is arranged between the joints of the two tubes in the connector.

[0015] In another embodiment of the reservoir according to the invention, the deflection region of the suction tube can be at least partially surrounded by a filter. Particles can be heavier than liquid oil and liquid refrigerant and for this reason collect completely at the bottom in the cylinder. If the oil hole must be installed very wide below half the axial height of the deflection region, it is possible that particles are sucked in by the compressor through the oil hole. The particles can be filtered out of the oil by the filter. The filter can, for example, have a filter fabric on which the particles are deposited.

[0016] In another embodiment of the reservoir according to the invention, the cylinder can have an upper cylinder cover. The suction pipe and the upper cylinder cover are connected to each other. The suction pipe can be connected to the upper cylinder cover in a force-locking manner, for example, by a press fit. It is possible that the mixture of refrigerant and oil flows into the cylinder through the opening via the upper cylinder cover.

[0017] The upper cylinder cover can have at least one separating wall. In another embodiment of the reservoir according to the invention, the upper cylinder cover has a separate separating wall. The separating wall can be wound around the suction tube with a constant pitch in the opposite direction of the axial direction. In this way, the flow of the refrigerant flowing into the reservoir can be deflected in such a way that the flow includes a component along the inner surface of the cylinder. In this way, the phase separation of the liquid part and the gaseous part of the refrigerant can be improved.

[0018] In another embodiment of the reservoir according to the invention, the reservoir can have an axis. The oil hole can have a radial spacing from the axis. The axial axis can extend through the center point of the upper cylinder head and the lower cylinder head respectively and thus represent the center axis of the cylinder. It is possible that the reservoir cannot be installed exactly parallel to the direction of gravity in the motor vehicle due to structural space restrictions. Due to the radial spacing of the oil hole from the axial axis, this deviation with respect to the direction of gravity can be compensated again. It is also possible that the radial spacing approaches zero.

[0019] In the first application according to the invention, the storage device can be used in the refrigerant circuit of a motor vehicle. The storage device can be represented, for example, in the first embodiment according to the invention. The refrigerant circuit can be traversed by a refrigerant. It is conceivable that the refrigerant is traversed by R1234yf, for example. As an alternative to this, it is possible that the refrigerant circuit is traversed by carbon dioxide (R744). The refrigerant circuit for a motor vehicle can have the following components: a condenser for condensing the refrigerant, a storage device according to the invention for separating the gaseous part and the liquid part of the refrigerant from each other and / or for collecting and storing the refrigerant, an expansion valve for reducing the refrigerant pressure, an evaporator for evaporating the refrigerant, a compressor for compressing the refrigerant and connected pipelines. With the aid of the evaporator, heat can be drawn from the interior of the motor vehicle, for example, and this heat can be discharged to the surrounding environment through the condenser. The storage device according to the invention can be used to improve the efficiency of the refrigerant circuit under different environmental conditions in an advantageous manner, that is, to store the refrigerant in the storage device according to the invention and to release the refrigerant again when needed. The storage device according to the invention can be constructed in such a way that a phase separation of the refrigerant with a gaseous part and a liquid part can also occur in the storage device due to gravity. Different ambient conditions can refer to different seasons, for example. Since the refrigerant circuit is closed and has only a maximum of a reservoir according to the invention, the refrigerant can operate in a self-regulating manner with the aid of the reservoir according to the invention. Oil is required to lubricate the compressor of the refrigerant circuit. This oil can mix with the refrigerant. Liquid oil collects at the lower end of the reservoir according to the invention due to gravity, since liquid oil can be heavier than liquid refrigerant. The compressor can draw oil through the oil hole and be lubricated in this way.

[0020] In a first embodiment according to the invention, the structural unit has a heat exchanger and a storage device. The storage device can be represented, for example, in accordance with the first embodiment of the invention and has a cylinder. The heat exchanger can have a tube and the tube can be wound around the cylinder in an axial direction with a constant pitch. The heat exchanger can be an internal heat exchanger. The cold low-pressure part and the hot high-pressure part of the refrigerant circuit can exchange heat in an advantageous manner through the internal heat exchanger. The cold low-pressure part may overheat in this way. The structural unit can be arranged in a hot engine compartment of a motor vehicle. The input of heat into the storage device can at least be advantageously reduced because the heat exchanger can be arranged between the storage device and the engine compartment. Undesirable input of heat into the weight of the storage device may reduce the power of the storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional view of a structural unit consisting of a heat exchanger and a storage device according to the present invention;

[0022] Figure 2.1is a detailed view of a section of the lower part of a reservoir having a connector provided with an oil hole;

[0023] Figure 2.2 is a detailed view of a section through the lower part of a reservoir having a connector equipped with an oil hole and an attached filter;

[0024] Figure 3 It is a detailed view of the cross section of the upper cylinder head of the cylinder;

[0025] Figure 4 is a cross-sectional view of a structural unit consisting of a heat exchanger and a storage device according to the present invention;

[0026] Figure 5 is an exploded view of a structural unit consisting of a heat exchanger and a reservoir according to the invention. DETAILED DESCRIPTION

[0027] exist Figure 1, a cross section of a storage unit A together with a structural unit 100 in a first embodiment according to the invention is shown. The storage unit A and the heat exchanger WT together form the structural unit 100. The storage unit A or the structural unit 100 has essentially a long cylindrical shape. The axial direction AR extends along the vertical axis of the storage unit A. The axial direction AR extends in the direction of the gravity G. The term "below" is defined in the storage unit A according to the invention with respect to the gravity G. The axial axis AS of the storage unit A coincides with the vertical axis of the storage unit A. A refrigerant not shown can flow through the storage unit A. Carbon dioxide (R744) can be used as a refrigerant, for example. The gaseous part and the liquid part of the refrigerant not shown can be separated from each other in the storage unit A and / or the refrigerant not shown can be gathered and stored in the storage unit A. The storage unit A has a cylinder Z equipped with an upper cylinder head ZDO and a lower cylinder head ZDU. The lower cylinder head ZDU is arranged completely below. The suction pipe SR is arranged in the cylinder Z and is flowed through by the refrigerant not shown. Phase separation and aggregation and storage of the refrigerant not shown may occur in the cylinder Z. Due to gravity, the heavier liquid part of the refrigerant (not shown) sinks and phase separation occurs in this way. The heat exchanger WT is composed of a tube, which is wound around the cylinder Z in the axial direction AR with a constant pitch. The heat exchanger WT can be connected to the cylinder Z, for example, by means of a force-locking connection. The refrigerant (not shown) (the refrigerant can be gaseous and / or liquid) is sucked by the compressor (not shown) through the suction pipe SR. The suction pipe SR has a deflection area UB at the bottom, in which the refrigerant (not shown) is deflected in the axial direction AR. The deflection area UB is connected to the lower cylinder head ZDU in a force-locking manner. The deflection area UB at the bottom and the lower cylinder head ZDU are designed in two parts. The deflection area UB is shown by the connector V. The suction pipe has two tubes R1, R2. The two tubes R1, R2 are connected to the connector V in a force-locking manner. The connector V is connected to the lower cylinder head ZDU in a force-locking manner. The suction pipe SR is designed in three parts in this way. The two tubes R1, R2 are designed as double tubes. The two tubes R1, R2 are arranged side by side here. At the upper end, the suction pipe SR is connected to the upper cylinder cover ZDO by force-locking by means of two pipes R1 and R2. Since the suction pipe SR and the lower cylinder cover ZDU are connected to each other, the volume available for storage and / or phase separation of the refrigerant is maximized in an advantageous manner, provided that the external dimensions of the storage A according to the invention are the same. The turning area UB and therefore the connector V have a cylindrical shape and have an axial height AH in the axial direction AR. The refrigerant, not shown, can be mixed with oil. The compressor, not shown, can be lubricated with oil, for example. The heavier liquid part of the refrigerant sinks with the oil, while the lighter gaseous part of the refrigerant accumulates in the upper part of the cylinder Z. Since the oil is even heavier than the liquid refrigerant, the oil accumulates below the liquid refrigerant in the area below the cylinder Z, also referred to as the oil tank. The oil can be separated from the refrigerant in this way. The turning area UB of the suction pipe has an oil hole OB. The oil hole OB is arranged in the connector V.The oil hole OB is radially spaced from the axial axis AS. The oil hole OB is arranged above half the axial height AH. The liquid oil not shown, which is collected in the cylinder at the bottom, can be sucked by the compressor not shown through the oil hole OB via the suction pipe SR. It is possible that particles (such as foreign matter, sludge, compressor wear or rubber particles that have escaped from the hose) are collected at the bottom in the cylinder Z. The axial arrangement of the oil hole OB above half the axial height can at least make the accompanying suction of particles difficult. The storage device A has a high-pressure inlet HDZ at the bottom and a high-pressure outlet HDA at the top and a low-pressure inlet NDZ at the top and a low-pressure outlet NDA at the bottom. The storage device A is connected to the high-pressure part of the refrigerant circuit not shown via the high-pressure inlet HDZ and the high-pressure outlet HDA. The storage device A is connected to the low-pressure part of the refrigerant circuit not shown via the low-pressure inlet NDZ and the low-pressure outlet NDA. A dry bag not shown can be arranged inside the cylinder Z. The cold low-pressure part and the hot high-pressure part of the refrigerant circuit not shown can exchange heat via a heat exchanger.

[0028] In FIG. 2 , a cross-sectional view shows the area below the storage A according to the invention in the first embodiment or in another embodiment of the invention. A cylinder Z having a lower cylinder head ZDU is arranged in the storage. The axial direction AR extends in the direction of gravity G. The storage has an axial axis AS extending along its vertical axis. The suction pipe SR is arranged in the cylinder Z and has a deflection area UB. The deflection area UB is connected to the lower cylinder head ZBU in a force-locking manner. The flow of the refrigerant, not shown, can be deflected in the axial direction AR in the deflection area UB. The suction pipe SR has two tubes R1, R2 and a deflection area UB. The deflection area UB is designed as a connector V of the two tubes R1, R2. The two tubes R1, R2 and the connector V are connected in a force-locking manner. The deflection area UB with the connector V is connected to the lower cylinder head ZDU in a force-locking manner, so that the deflection area UB is connected to the lower cylinder head ZDU and is designed in two parts in this way. The deflection area UB with the connector V has a cylindrical shape and has an axial height AH in the axial direction AR. The axial height AH extends from the lower cylinder head ZDU to the upper end of the deflection area UB. An oil hole OB is arranged in the deflection area UB. The oil hole has a radial spacing from the axial axis. The oil hole has a diameter of 1.1 mm. It is possible that particles (such as foreign matter, oil sludge, compressor wear or rubber particles that have escaped from the hose) accumulate in the cylinder Z at the bottom.

[0029] exist Figure 2.1, the lower region of the reservoir A according to the invention in a first embodiment of the invention is shown in a sectional view. The oil opening OB is arranged above half of the axial height AH. It is possible that particles collect at the bottom in the cylinder Z and therefore below the oil opening OB. In this way, the extraction of particles or foreign bodies can be at least made more difficult or prevented.

[0030] exist Figure 2.2 , in a sectional view, shows a region of a reservoir A according to the invention in another embodiment according to the invention. The oil opening OB is arranged below half the axial height AH. It is possible that particles collect below in the cylinder Z. The filter F is arranged around the deflection region UB. The filter F has a filter fabric FG. In this way, particles that may occur can be deposited on the filter fabric FG and the oil (not shown) can be filtered as a result.

[0031] exist Figure 3 The upper part is shown in the sectional view of the storage A in the first embodiment of the present invention. A cylinder Z with an upper cylinder cover ZDO is arranged inside the storage A. The suction pipe SR is arranged inside the cylinder Z and is composed of two tubes R1, R2 and a deflection area not shown here. The two tubes R1, R2 are respectively connected to the upper cylinder cover ZDO by force locking. The upper cylinder cover ZDO has a cylindrical shape. A separation wall T is arranged inside the upper cylinder cover ZDO. The separation wall T is wound against the vertical axis of the cylinder Z with a constant pitch. With the help of the separation wall T, the flow of the refrigerant not shown can be deflected in such a way that the flow includes a component along the inner surface of the cylinder Z. In this way, the phase separation of the liquid part and the gaseous part of the refrigerant can be improved.

[0032] exist Figure 4 , a sectional view of an assembly 100 with a storage A according to a first embodiment of the invention is shown. The assembly 100 has an upper assembly cover BDO, an assembly pipe BR and a lower assembly cover BDU. It is conceivable that the assembly covers BDO, BDU are made of an aluminum alloy. A suction pipe, not shown here, is arranged in the cylinder Z of the storage A. It is conceivable that the cylinder Z is made of plastic. The tubes of the heat exchanger WH are wound spirally around the cylinder Z. The assembly 100 or the heat exchanger WH can be connected to the high-pressure part of the refrigerant circuit, not shown, via a high-pressure inlet HDZ and a high-pressure outlet HAD and thus form a high-pressure channel. The assembly 100 can be connected to the low-pressure part of the refrigerant circuit, not shown, via a low-pressure inlet NDZ and a low-pressure outlet NDA. The low-pressure channel, not shown, can be constructed between the spiral tubes of the heat exchanger WH. The cold low-pressure part and the hot high-pressure part of the refrigerant circuit, not shown, can exchange heat via the heat exchanger WH.

[0033] exist Figure 5, an exploded view of an assembly 100 having a storage A according to a first embodiment of the invention is shown. The assembly 100 has an upper assembly cover BDO, an assembly pipe BR and a lower assembly cover BDU. The storage has a cylinder Z. The pipe of the heat exchanger WH is wound spirally around the cylinder Z. The assembly 100 or the heat exchanger WH can be connected to a high-pressure part of a refrigerant circuit not shown via a high-pressure inlet HDZ and a high-pressure outlet HDA. The assembly 100 can be connected to a low-pressure part of a refrigerant circuit not shown via a low-pressure inlet NDZ and a low-pressure outlet NDA. The low-pressure part and the high-pressure part of the refrigerant circuit not shown can exchange heat via the heat exchanger.

[0034] Reference numerals list

[0035] A. Memory according to the present invention

[0036] 100 A structural unit consisting of a storage device and a heat exchanger according to the present invention

[0037] SR Straw

[0038] UB The turning area below the straw

[0039] V can represent the connector of the turning area

[0040] R1 and R2 tubes, the straw is made of them

[0041] OB oil hole

[0042] AR Axial direction

[0043] G Gravity

[0044] AH Axial height of the connector / turning area

[0045] AS Axial axis of the memory

[0046] WT Heat Exchanger

[0047] Z cylinder

[0048] ZDO cylinder cover

[0049] ZDU cylinder lower cover

[0050] NDZ low pressure inlet

[0051] NDA low pressure outlet

[0052] HDZ high pressure inlet

[0053] HAD high pressure outlet

[0054] F Filter

[0055] FG Filter Fabric

[0056] T Separation wall

[0057] BR structural unit tube

[0058] Upper cover of BDO structural unit

[0059] Lower cover of BDU structural unit

Claims

1. A storage device (A), preferably for a motor vehicle, for separating gaseous and liquid parts of a refrigerant from one another and / or for collecting and storing the refrigerant, the storage device comprising: - cylinder (Z), - Straw (SR), -in, The cylinder (Z) has a lower cylinder head (ZDU), - wherein the suction pipe (SR) is arranged inside the cylinder (Z), - wherein the refrigerant flows through the suction pipe (SR), It is characterized in that the suction pipe (SR) has a deflection area (UB) for the refrigerant at the bottom, wherein the deflection area (UB) and the lower cylinder cover (ZDU) are integrally molded or connected to each other.

2. The memory (A) according to claim 1, characterized in that The deflecting region (UB) has an oil hole (OB).

3. The memory (A) according to claim 1 and 2, characterized in that The deflection region (UB) of the suction tube (SR) has an axial height (AH), wherein the oil opening (OB) is arranged above or below half the axial height (AH).

4. A memory (A) according to claims 1, 2 and 3, characterized in that The straw (SR) is molded in one piece.

5. The memory (A) according to claims 1, 2 and 3, characterized in that The straw (SR) is molded in at least two parts.

6. The memory (A) according to claim 5, characterized in that The suction tube (SR) has at least one tube (R1, R2), wherein the deflection region (UB) is molded as a connector (V), wherein the connector (V) is connected to the at least one tube (R1, R2).

7. The memory (A) according to claim 4 or 5, characterized in that: The deflection region (UB) of the suction tube (SR) is at least partially surrounded by a filter (F).

8. A memory (A) according to any one of the preceding claims, characterized in that The cylinder (Z) has an upper cylinder cover (ZDO), wherein the suction pipe (SR) and the upper cylinder cover (ZDO) are connected to one another.

9. A memory (A) according to any one of the preceding claims, characterized in that The upper cylinder head (ZDO) has at least one separating wall (T).

10. A memory (A) according to any one of the preceding claims, characterized in that The reservoir (A) has an axis (AS), wherein the oil bore (OB) has a radial spacing from the axis (AS).

11. A refrigerant circuit of a motor vehicle having a accumulator (A) according to at least one of the preceding claims 1 to 10.

12. A structural unit (100), preferably for a motor vehicle, comprising a heat exchanger (WH) and a accumulator (A) according to at least one of the preceding claims 1 to 10.

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