EP2984421A1

EP2984421A1 - Receiver

Info

Publication number: EP2984421A1
Application number: EP14716361.2A
Authority: EP
Inventors: Martin Kaspar; Herbert Hofmann; Uwe FÖRSTER
Original assignee: Mahle Behr GmbH and Co KG
Current assignee: Mahle International GmbH
Priority date: 2013-04-11
Filing date: 2014-04-10
Publication date: 2016-02-17
Anticipated expiration: 2034-04-10
Also published as: CN105102908A; CN105102908B; DE102013206357A1; US10627140B2; EP2984421B1; US20160010906A1; WO2014167078A1

Abstract

The invention relates to a receiver (20), comprising a receiver housing (21). The receiver housing has a fluid-receiving chamber (25), a fluid inlet (26), and a fluid outlet (27). A drier (36) is provided in the fluid-receiving chamber (25). The receiver is characterized in that an inlet channel (28) protrudes into the fluid-receiving chamber (25), which inlet channel has a channel outlet (30) in the fluid-receiving chamber (25) and conducts fluid into the fluid-receiving chamber (25) from the fluid inlet (26) as a channel inlet (31), the inlet channel (28) being shaped in such a way that the fluid flowing out of the channel outlet (30) flows out in a lateral direction. The invention further relates to a condenser having a receiver.

Description

collector

description

Technical area

The invention relates to a collector for a refrigerant for a refrigerant circuit, in particular a motor vehicle, according to the preamble of claim 1, and a capacitor with such a collector,

State of the art

Refrigerant tank refrigerant collectors are known in the art. These collectors store the refrigerant to ensure that enough refrigerants are available in the refrigerant circuit, even in the event of operational fluctuations in the filling volume.

Furthermore, a desiccant is often provided in the collector to dry the refrigerant and sprinkle moisture from the refrigerant.

The collector is often arranged in the refrigerant circuit after the condenser or between a condensation zone and a subcooling zone of the condenser in the Fiuidstrom. The refrigerant flows out the condenser or from the condensation zone of the condenser into the collector, where the refrigerant is separated into a gaseous phase and a liquid phase. The gaseous phase collects above the liquid phase in the collector and the liquid phase can be removed from below the gaseous phase again from the collector.

If gaseous refrigerant is also conducted from the collector into the subsequent subcooling zone, this gaseous refrigerant must first condense in the subcooling zone, so that the further lowering of the temperature of the gaseous portion of the refrigerant can not be implemented until the gaseous portion has not condensed , This reduces the effectiveness of the subcooling zone because part of the effectiveness does not cause the temperature of the refrigerant to drop but only its condensation.

This ultimately causes the maximum subcooling temperature is not reached and thus the effectiveness of the subsequent evaporator is not optimal.

The filling level of the collector with refrigerant depends on the load condition of the refrigeration cycle but also on the filling quantity during filling and on any leaks. In this case, in each operating condition, ie at each Füilhöhe of the refrigerant in the collector refrigerant is fed into the subsequent subcooling.

Presentation of the invention, object, solution, advantages

It is the object of the invention to provide a collector in which the gaseous fraction in the liquid refrigerant flowing from the collector over wide operating ranges or at different fill levels as low as possible. It is also the task to create a capacitor with such a collector.

This is achieved with the features of claim 1.

An embodiment of the invention provides a collector with a header housing having a fluid collection chamber, a fluid inlet and a fluid outlet, wherein a dryer is provided in the fluid collection chamber, wherein in the fluid collection chamber an inlet channel protrudes which has a channel outlet in the fluid collection chamber, which fluid from Fluid inlet as a channel inlet into the Fluidsammeiraum passes, wherein the inlet channel is shaped such that the flowing out of the channel outlet fluid in a lateral direction at a distance from the central axis of the collector flows out. This ensures that the fluid flows in a circular or helical path in the collector and thereby a good separation of gaseous and liquid refrigerant in the fluid collection chamber of the collector is achieved, so that when flowing out of fluid from the collector, the gaseous component reduced or is avoided. According to the invention, it is expedient if there is an unobstructed volume above the duct outlet which is at least 50% of the gross volume of the collector in this section and which extends over a height of at least 50% of the total internal height of the collector. It is advantageous if a dryer, such as a dryer granules, below the Kanalauslasses, on the side facing away from the unobstructed volume, is located.

It is also expedient if a dryer, such as a dryer granulate, is located at the upper end of the collector. It is also advantageous if the collector volume has a substantially constant cross-sectional area.

It is expedient if the cross section of the collector has a round shape.

Furthermore, in one exemplary embodiment of the invention, it is advantageous if the collector housing has a round cross section with a cylindrical wall. The result is that the fluid flowing out of the channel outlet is forced on the cylindrical wall of the collector housing into a circular flow in which the gas components rise better can and better settle on the liquid portion.

It is also expedient for the inlet channel to have at its channel outlet an outlet opening rotated by approximately 90 ° to a channel longitudinal axis, so that the outflowing fluid stream emerges approximately at right angles to the channel longitudinal axis. It is thereby achieved that the fluid flows out substantially in a horizontal plane and can be forced into a spiral path in order to lengthen the path of the fluid, so that the phase separation is improved.

It is particularly advantageous if the channel outlet is designed as a pipe bend. As a result, a simple way of deflecting the fluid is achieved. It is also expedient if the channel outlet is formed as an obliquely cut off tube end, in which the long projecting tube wall side is folded to the short tube wall side. Characterized in that the long-protruding pipe wall side is bent to the short pipe wall side by about 90 °, a structure is advantageously achieved, which corresponds to a simple deflection by 90 °. This structure is achieved by obliquely cutting off the tube and then folding over a tube wall side. It is also advantageous if the dryer is arranged between two fluid-permeable Haitescheiben, wherein the inlet channel passes through at least one of the Haitescheiben, advantageously the two holding disks. Thus, the dryer can be arranged between the two Haitescheiben, wherein the inlet channel engages through the retaining disks. This causes the fluid to not pass directly through the dryer on the way into the fluid collection space, but is led away from the inlet channel through the dryer. On the way back from the fluid collection chamber to the fluid outlet, however, the fluid must flow past the dryer, ie through the holding disks and on the dryer granules arranged therebetween. Thus, the dryer from the entrance to the outlet of the fluid collecting space flows through only once.

It is also advantageous if the dryer is arranged between a bottom wall or top wall and a fluid-permeable retaining disk. The dryer can be arranged at the top or at the bottom of the fluid collection chamber, so that it is space-saving and cost-effective with only one retaining disc. It is advantageous if the one holding disk is penetrated by the inlet channel. This is especially the case when the dryer is located at the bottom of the collector.

It is also expedient if a fluid deflection element, which deflects the fluid flow from the fluid collecting space to the fluid outlet, is connected to the etching channel. This blocks the direct path to the fluid outlet and redirects the fluid to extend the path for the fluid, favoring phase separation.

It is also advantageous if the fluid deflection element is a wall which is aligned substantially perpendicular to the longitudinal direction of the inlet channel. Thus, a simple and inexpensive type of obstruction and diversion can be achieved. The wall may be formed as a flat disc with an opening for passing through the inlet channel, It is also expedient if between the wall as Fluidumlenkelement and the wall of the collector housing a gap for the flow of fluid to the fluid outlet is provided, Thus, a targeted dimensioned Durchiass be created without the need for separate components,

It is particularly advantageous if a filter is arranged between the fluid deflecting element and the fluid outlet. As a result, the fluid deflecting element can also serve to hold the filter, so that a separate holder could be dispensed with. The holder can be integrated into the fluid deflecting element.

It is also expedient if the filter covers the fluid outlet with one of its side surfaces and is covered by the fluid deflection element on one of the opposite side surface. As a result, a defined arrangement and flow through the filter is achieved. The holder takes place between the edge region of the fluid outlet and the Fluidumlenkelement, while the flow of the filter takes place laterally from the side, It is also advantageous if the retaining plate is a perforated plastic or sheet metal disc. Thereby, the disc can be inexpensively manufactured by injection molding or stamping.

It is also advantageous if the duct outlet is designed as a pipe socket with an adapter piece, in particular made of plastic, mounted or inserted _" . It is also expedient if the fluid inlet and / or the fluid outlet are arranged on a bottom plate of the collector.

The object of the capacitor is achieved with the features of claim 20.

One embodiment relates to a condenser for a refrigeration cycle, in particular of a motor vehicle, having a block with first and second fluid passages, wherein the first fluid passages can flow through a coolant and the second fluid passages through a coolant, the first fluid passages into a condensation zone for condensing the refrigerant and is subdivided into a subcooling zone for the cooling of the liquid refrigerant, wherein the chamber is arranged in the fluid flow between the condensation zone and the subcooling zone or after the subcooling zone.

Further advantageous embodiments are described by the following description of the figures and by the subclaims.

Brief description of the drawings

The invention will be explained in more detail on the basis of at least one embodiment with reference to the drawings. Show it:

1 shows a collector according to the prior art,

Fig. 2 shows an embodiment of an inventive

collector, 3 shows a further embodiment of a collector according to the invention,

4 shows a detail of an embodiment of a collector according to the invention,

5, an embodiment for an inlet channel, and

Fig. 6 shows an embodiment of a further inlet channel.

Preferred embodiment of the invention

1 shows a collector 1 for a refrigerant of a refrigerant circuit of a motor vehicle according to the prior art. The collector 1 has a collector housing 2, which has a cylindrical wall 3 and a bottom 4 and a cover 5.

In the bottom 4 a Ftuideinlass 6 and a fluid outlet 7 are provided, the fluid inlet 6 is a hole through the bottom 4, as well as the fluid outlet 7 represents a hole through the bottom 4. On the inside of the fluid inlet 8, a riser 8 is arranged, which communicates with the fluid inlet 6 and which extends substantially through the entire collector in the vertical direction, flows through the fluid inlet 6, a refrigerant 9, so it enters through the riser 8 in vertical upward direction and flows at the upper end of the riser 8 in the fluid collection chamber. There, it essentially sinks and, after passing through the dryer 10, returns to the fluid outlet 7. The dryer 10 is arranged approximately in the center of the collector housing 2, with a quantity of dryer granules 11 being held between two perforated disks. The dryer granulate is thus held on both sides by a respective perforated disc 12, 13, which are arranged at a distance from each other. The refrigerant 9, which flows out at the upper end of the riser 8, flows through the dryer by it flows through the upper perforated disc and flows past the dryer granules and then flows through the lower perforated disc. FIG. 2 shows a schematic representation of a device according to the invention

Collector 20 with a collector housing 21st The collector housing 21 consists of a cylindrical wall 22 and a bottom 23 and a lid 24, the collector housing 21 may preferably be formed of a tube which forms the wall 22, the bottom 23 is for example inserted into the tube and the lid with the Pipe is connectable or even formed with this one-piece. The collector 20 forms a fluid collection chamber 25 inside the collector housing 21, the collector 20 being provided with a fluid inlet 28 and with a fluid outlet 27. The fluid inlet 26 and the fluid outlet 27 are provided as bores in the bottom 23.

The fluid inlet 26 and the fluid outlet 27 form openings or bores in the bottom 23 and serve for fluid communication between an external port and the fluid collection chamber 25. Inside the fluid collection chamber 25 is provided an inlet channel 28 which is fluidly connected to the fluid inlet 26 and which into the fluid collection chamber 25 protrudes. The fluid, such as refrigerant, 29 flowing through the fluid inlet 26 flows through the inlet channel 28 and exits the channel outlet 30 of the inlet channel 28. The channel inlet 31 may coincide with the fluid inlet 26, or it may join the fluid inlet, such as where the inlet channel 28 begins at the bottom 23. Advantageously, the inlet channel 28 is a tube which is inserted into the bottom 23 or attached to the bottom 23. For this purpose, the tube, which forms the inlet channel 28, can be let into an opening in the bottom 23 or placed in or on a receptacle. The inlet channel 28 has at its channel outlet 30 a shape which causes the fluid flowing out of the channel outlet 30, in cooperation with the wall 22 of the header housing 21, to assume a spiral flow within the fluid collecting space. In addition, the inlet kana! 28 at its channel outlet 30 an approximately 90 ° to a channel longitudinal axis 32 twisted outlet opening, so that the outflowing fluid flow leaves the channel outlet 30 approximately right angles to the channel longitudinal axis 32. Spiral means an arcuate or approximately circular flow or an approximated to a circular path flow, which may well be provided with a speed component in the vertical, so that the fluid can move from an inflow even up or down.

In other embodiments, the angle of 90 ° to the channel longitudinal axis may also assume different values, for example, between 45 ° and 135 ° in this respect, so that the flow of the fluid from the channel outlet 30 is directed towards the cylindrical wall 22, but still the fluid flow Velocity component in a vertical direction upwards or downwards,

The fluid flowing out of the fluid passage 27 strikes the cylindrical wall 22 with a velocity component and is deflected there on a circular arc or on a spiral path. A fluid deflecting element 33 is connected to the inlet channel 28 such that the fluid deflecting element 33 is designed as a wall, in particular horizontal, for example, and the inlet channel 28 passes through the fluid deflecting element 33, so that a fluid flowing out of the channel outlet 30 can not flow directly to the fluid outlet 27 but is deflected by this Fluidumlenkelement 33. The Fluidumlenkelement 33 is formed for example as a flat plate, the is either formed in common with the inlet channel 28 or connected to this and carried, wherein the inlet channel 28 can pass through as a tube through an opening of the Fluidumlenkelements 33. Between an edge of the Fluidumlenkelements 33 and the wall 22 may remain a gap 34 through which the fluid 29 flows before it the fluid outlet 2? reached.

Optionally, a filter 35 can be arranged between the fluid deflecting element 33 and the fluid outlet 27, which filter is seated on the fluid outlet and is covered by the fluid deflecting element 33. This causes a lateral inflow of the fluid 29 into the filter 35, so that the fluid in the filter 35 is deflected substantially by 90 ° before it reaches the fluid outlet 27. In the embodiment of Figure 2, the dryer 36 is disposed at the upper end in the region of the lid 24, wherein the dryer 36 is received between a top wall 24 and a retaining disk 37 as granules. In this case, the holding plate 37 is a fluid-permeable disc, such as a perforated disc or a mesh or the like. The retaining disk 37 is preferably fastened or held on the inner wall of the collector housing 21, so that the dryer granules of the dryer 36 remain between the cover 24 and the retaining disk 37. For example, the retaining disk 37 may also be spring-loaded, so that it presses on the dryer granules in the axial direction on the lid and thus compressed.

FIG. 3 shows a further exemplary embodiment of a collector 50 according to the invention, in which a tubular inlet channel 54, through which the fluid 55 can flow into the fluid collecting chamber 56, is provided inside the collector housing 51 with fluid inlet 52 and fluid outlet 53. The Kanaiauslass 57 is in turn designed such that a lateral, substantially horizontal outflow of the fluid 55 in the direction of the wall 58, so that the fluid is forced to a helical path or a circular path, The dryer 59 is disposed between two retaining disks 60, 61 _» from the rohrformigen inlet channel 54 are interspersed. The fluid flows from the inlet channel 54 into the fluid collection space 56 above the upper retaining disk 51 and enters the dryer through the upper retaining disk 61, which is a fluid-permeable retaining disk, flows around the dryer granulate arranged there and subsequently flows through the lower retaining disk 60 Direction to the fluid outlet 53rd

FIG. 4 shows the arrangement of the upper holding disk 61 in relation to the tubular inlet channel 54. In this case, the holding disk 61 has a multiplicity of openings 62 through which the fluid can flow. Furthermore, the retaining disk 61 has a larger opening 63, through which the inlet channel 54 can reach through as a tubular element. The upper end of the fluid inlet channel with its pipe bend or as a cap-shaped end region with a lateral opening projects beyond the holding disk 61. Thus, the fluid can flow out of the inlet channel 54 in a lateral direction above the holding disk 61.

FIG. 5 shows an inlet channel 70, which is designed as a tube. At the upper end, the inlet channel 70 has a pipe bend 71 which terminates in a channel outlet 72 which lies in a plane which is perpendicular to the cross section of the fluid inlet of the collector and to the cross section of the vertical part of the tubular inlet channel 70.

6 shows in the left figure an inlet channel 80 _»which is obliquely cut off at its upper end 81. In this case, the inlet channel has a channel outlet 82, which through the obliquely cut tube end is formed, wherein the tube has a long projecting tube wall side 83 and a short tube wall side. Subsequent to the cutting of the inlet channel, the long protruding tube wall side is bent in the direction of the short tube wall side 84, so that a channel outlet is formed, which essentially allows a lateral outflow of the fluid from the inlet channel, see Figure 6, the right figure,

Individual features of different embodiments may be combined with each other without restriction of generality and also without special mention.

Claims

Patent claims

Collector (20) with a collector housing (21) with a fluid collection space (25), with a fluid inlet (26) and with a fluid outlet (27), a dryer (36) being provided in the fluid collection space (25), characterized in that an inlet channel (28) projects into the fluid collection space (25), which has a channel outlet (30) in the fluid collection space (28), which directs fluid from the fluid inlet (26) as a channel inlet (31) into the fluid collection space (25), characterized in that the inlet channel (28) is shaped such that the fluid flowing from the channel outlet (30) flows out in a lateral direction at a distance from the central axis of the collector.

Collector according to claim 1, characterized in that above the channel outlet there is an unobstructed volume which is at least 50% of the gross volume of the collector in this section and which extends over a height of at least 50% of the total internal height of the collector

Collector according to claim 2, characterized in that a dryer, such as dryer granules, is located below the channel outlet, on the side facing away from the unobstructed volume.

Collector according to claim 2, characterized in that a dryer, such as dryer granules, is located at the upper end of the collector.

5. Collector according to one of the preceding claims, characterized in that the collector volume has a substantially constant cross-sectional area.

6. Collector according to claim 5, characterized in that the

Cross section of the collector has a round shape.

7. Collector according to one of the preceding claims, characterized in that the channel outlet (30,70) is designed as a pipe bend (71).

8. Collector according to one of the preceding claims, characterized in that the channel outlet (82) is designed as an obliquely cut pipe end, in which the long projecting pipe wall side (83) is folded to form the short pipe wall side (84).

9. Collector according to one of the preceding claims, characterized in that the channel outlet is designed as a pipe socket with an attached or inserted adapter piece, in particular made of plastic.

10. Collector according to one of the preceding claims, characterized in that the dryer (59) is arranged between two fluid-permeable holding disks (60,61), the inlet channel (28) being at least one of the holding disks (60,60), advantageously the two holding plates (60,61) interspersed.

1 1 . Collector according to one of the preceding claims, characterized in that the dryer (36) is arranged between a bottom wall or a top wall and a fluid-permeable holding disk (37).

12. Collector according to claim 11, characterized in that the one holding disk (37) is penetrated by the inlet channel.

13. Collector according to at least one of the preceding claims, characterized in that a fluid deflection element (33) is connected to the inlet channel (28), which deflects the fluid flow from the fluid collection space (25) to the fluid outlet (27).

14. Collector according to claim 13, characterized in that

Fluid deflection element (33) is a wall which is aligned essentially perpendicular to the channel longitudinal direction (32) of the inlet channel.

15. Collector according to claim 14, characterized in that a gap (34) for the fluid to flow through to the fluid outlet (27) is provided between the wall as a fluid deflection element (33) and the wall (22) of the collector housing (21), 18. Collector according to at least one of the preceding claims 9 to 1 1, characterized in that a filter (35) is arranged between the fluid deflection element (33) and the fluid outlet (27). 1 7. Collector according to claim 16, characterized in that the

Filter (35) covers the fluid outlet (27) with one of its side surfaces and is covered by the fluid deflection element (33) on an opposite side surface. 13. Collector according to at least one of the preceding claims, characterized in that the holding disk is a perforated plastic or sheet metal disk. 19, collector according to one of the preceding claims, characterized in that the fluid inlet and / or the fluid outlet are arranged on a base plate of the collector. 20. Condenser for a refrigeration cycle, especially one

Motor vehicle, with a block with first and second fluid channels, wherein the first fluid channels can be flowed through by a refrigerant and the second fluid channels by a coolant, the first fluid channels being in a condensation zone for condensation of the refrigerant and in a subcooling zone

Entercooling of the liquid refrigerant is subdivided, the collector being arranged in the fluid flow between the condensation zone and the subcooling zone or after the subcooling zone.