DE102010026507A1 - Refrigerant condenser module - Google Patents

Abstract

In a refrigerant condenser module (1) for condensing refrigerant for an automotive air conditioning system, comprising a heat exchanger (2) as a condenser with a refrigerant inlet (6), a refrigerant outlet (8), a coolant inlet (10) and a coolant outlet (12), the heat exchanger (2) has a refrigerant passage and a coolant passage for passing refrigerant through the refrigerant passage and coolant through the coolant passage for transferring heat from the refrigerant to the coolant, a sump (14) for the refrigerant, a first refrigerant transfer passage (17) for conducting the refrigerant from the heat exchanger (2) into the sump (14), a sump refrigerant outlet port (19) formed on the sump (14) for discharging the refrigerant from the sump (14), the refrigerant condenser module (1) is simple and pre bewert in the production and allow a secure attachment to a motor vehicle. This object is achieved in that the heat exchanger (2) and the collecting container (14) with at least one base plate (21) are mechanically interconnected.

Description

The invention relates to a refrigerant condenser module according to the preamble of claim 1 and an automotive air conditioning system according to the preamble of claim 10.

In motor vehicles, automotive air conditioning systems are used to cool and / or heat the air supplied to a vehicle interior. For this purpose, the motor vehicle air conditioning system has a refrigerant condenser module with a heat exchanger for condensing the refrigerant and a collecting container, and also an expansion element, an evaporator and a compressor for forming a refrigeration circuit. The heat exchanger of the refrigerant condenser module serves as a condenser for the refrigerant and in this heat exchanger as a condenser, the refrigerant is liquefied. It is known to cool the capacitor by means of the ambient air or with the aid of liquid from a coolant circuit of the motor vehicle. When using a capacitor on the refrigerant condenser module, which is liquid- or water-cooled, thus the heat of condensation is released to the coolant as water.

From the DE 10 2004 044 861 A1 a heat exchanger for motor vehicles is known, which has a first chamber means and a second chamber chamber spaced therefrom, and a plurality of connecting tubes, each extending with its first end in the first chamber means and with its other, second end, in the second chamber means each of these connecting tubes has at least one channel with a straight longitudinal axis.

The WO 2004/042293 A1 shows a refrigerant condenser module with a heat exchanger as a condenser with a refrigerant inlet, a refrigerant outlet and a coolant inlet and outlet. Thereby, the heat can be transferred from the refrigerant to the coolant, wherein the heat exchanger is designed as a capacitor in stacked disk design. Furthermore, the refrigerant condenser module has a collecting container for the refrigerant.

The object of the present invention is therefore to provide a refrigerant condenser module and an automotive air conditioning system, which enables a secure attachment to a motor vehicle with a simple and inexpensive production and works reliably in operation in the long run.

This object is achieved with a refrigerant condenser module for condensing refrigerant for an automotive air conditioning system comprising a heat exchanger as a condenser with a refrigerant inlet, a refrigerant outlet, a coolant inlet and a coolant outlet, wherein the heat exchanger has a refrigerant passage and a coolant passage for passing refrigerant through the refrigerant passage and coolant through the coolant passage for transferring heat from the refrigerant to the coolant, a header for the refrigerant, a first refrigerant transfer passage for guiding the refrigerant from the heat exchanger to the header, a header refrigerant outlet port formed at the header for discharging the refrigerant therefrom Collecting container, wherein the heat exchanger and the collecting container with at least one base plate mechanis ch are connected to each other. The refrigerant condenser module is thus easy to manufacture and inexpensive because the sump and the heat exchanger as a capacitor are simply mechanically connected to each other with the at least one base plate, for example by means of a solder joint and / or a screw or rivet. The mechanical connection between the heat exchanger and the collecting container and the at least one base plate is preferably a detachable or a permanent connection. As a base plate, a connection plate, a connection disc or a plate-like connection grid with openings perpendicular to a plane spanned by the plate-like connection grid plane is also considered.

In an additional embodiment, the at least one base plate is provided with at least one holding part for fixing the refrigerant condenser module to a motor vehicle, in particular a body of the motor vehicle. With the holding part, the refrigerant condenser module can be easily attached to a motor vehicle, in particular a body. As a result, the expense required for this can be kept low during assembly of the refrigerant condenser module and thus costs can be saved.

In a supplementary embodiment, the holding part and a base plate are integrally formed and / or the holding part and the base plate with a bend, z. B. with a Kröpfungswinkel of substantially 90 °, connected to each other and / or the holding part has at least one fastening means, for. As a bore, a screw, a rivet or a hook, and / or the holding part is formed as at least one plate, at least one web or at least one rod. The holding part and the base plate are formed in one piece, so that in an advantageous manner with only one component both the holding part for fixing the refrigerant condenser module to the motor vehicle as well the base plate for connection of the heat exchanger and the collecting container can be provided. As a result, costs can be saved in the production of the refrigerant condenser due to the only one component required for this purpose and, moreover, a reliable connection of both the heat exchanger and the collecting container can be provided in a simple manner when fastening the refrigerant condenser to the motor vehicle.

In a further variant, when the refrigerant-capacitor module is attached to the motor vehicle, the at least one base plate is aligned substantially horizontally. Aligned substantially horizontally means that the at least one base plate is oriented with a deviation of less than 30 °, 20 °, 10 ° or 5 ° to a vertical plane or a vertical straight line. The at least one base plate is formed substantially disc-shaped for this purpose. The alignment of the at least one base plate in a fastening of the refrigerant condenser module to the motor vehicle can preferably be derived or determined from the geometry of the holding part.

In an additional embodiment, the collecting container and / or the heat exchanger are arranged and / or attached to an upper side of the base plate and / or the collecting container and the heat exchanger are arranged next to one another. The collecting container and / or the heat exchanger are arranged or fixed directly or indirectly on the upper side of the base plate. In a solder joint between the heat exchanger and the base plate of the heat exchanger, for example, indirectly attached to the base plate, because between the heat exchanger and the base plate, the solder joint is present. If the collecting container is fastened to the base plate, for example by means of a screw connection, the collecting container can rest directly on the base plate.

Suitably, the refrigerant condenser module comprises a subcooled heat exchanger for cooling the refrigerant with the coolant and a second refrigerant transfer passage for guiding the refrigerant from the sump into the subcool heat exchanger.

In a supplementary embodiment, the heat exchanger and / or the supercooling heat exchanger are designed in stacked disc design, and preferably stacking disks of the heat exchanger and / or the supercooled heat exchanger are soldered together.

In an additional embodiment, the heat exchanger and / or the supercooling heat exchanger is designed as a spiral heat exchanger, a tube bundle heat exchanger or as a jacket tube heat exchanger.

In a supplementary variant of the heat exchanger and / or the supercooling heat exchanger is soldered to at least one base plate and / or the heat exchanger and / or the supercooling heat exchanger with the at least one base plate releasably connected, for example with a screw or rivet.

In an additional embodiment, the collecting container is detachable on at least one base plate, for. B. with a screw or rivet connection, or the collecting container is soldered to at least one base plate and / or the first and / or second refrigerant transfer channel is formed with a transfer tube and / or is in at least two base plates, in particular two or three base plates, integrated and / or within the collection container hygroscopic material is arranged as a dryer and / or a filter and / or the coolant is a liquid. The first and / or second refrigerant transfer channel is, for example integrated into at least two base plates, that a first, second and third base plate are arranged one above the other, wherein the first base plate above, the second base plate in the middle and the third base plate is arranged below. In this case, the second middle base plate has at least one slot, so that thereby forms between the first and third base plate on the slot of the first and / or second refrigerant transmission channel. The first and / or second base plate has openings through which the refrigerant flows into or out of the refrigerant transfer channel. Notwithstanding this, the first and / or second refrigerant transfer channel can also be integrated to two base plates so that a first and a second base plate are arranged one above the other and impressions are present on the first and / or second base plate, so that due to these impressions or impressions between the first and second base plate forms the first and / or second refrigerant transfer passage. For introducing or discharging the refrigerant into this refrigerant transfer channel, the first and / or second base plate has corresponding openings or an opening in each case.

In an additional embodiment, both the heat exchanger, the collecting container and preferably also the supercooling heat exchanger is soldered to the at least one base plate; so that in an advantageous manner with only one manufacturing step during soldering in a brazing furnace, both the heat exchanger and the collecting container and the optional subcooler heat exchanger to the at least one base plate are fixed and thereby no additional operations are required and preferably in this soldering and the stacking disks of the heat exchanger are soldered.

In an additional embodiment, the components or the at least one base plate and / or the holding part and / or the collecting container and / or the heat exchanger and / or the supercooling heat exchanger consist at least partially, in particular completely, of metal, in particular steel or aluminum or copper.

Inventive vehicle air conditioning system with a refrigerant condenser module, an expansion valve, an evaporator and a compressor for forming a refrigerant circuit, wherein the refrigerant condenser module is designed as a described in this patent application refrigerant condenser module.

In a supplementary embodiment, the heat exchanger and / or the supercooling heat exchanger is made of extruded rolled or welded profiles, preferably with turbulence inserts.

In an additional embodiment, the heat exchanger and / or the supercooling heat exchanger is operated or designed according to the countercurrent and / or the DC principle for the refrigerant and the coolant.

In an alternative embodiment, the mechanical connection of the heat exchanger (with or without supercooling heat exchanger) with the collecting container via a, preferably welded, holder, which is required for mounting in the engine compartment anyway. The connection on the refrigerant side also takes place via a transfer tube, which can be flange-mounted or welded on both sides with sealing elements. The design of the holder can be made according to the requirements with the least possible use of materials.

In an additional embodiment, the motor vehicle air conditioning system comprises a fan, a housing, preferably made of plastic, at least one air duct for passing air, wherein the at least one air duct is preferably bounded by at least one wall of the housing, at least one air guide, for example an air damper or a Roller blind, a heater, for example, an electric heater or a flowed through by a coolant heat exchanger and / or an air filter.

Hereinafter, embodiments of the invention will be described in more detail with reference to the accompanying drawings. It shows:

1 a highly simplified longitudinal section of a refrigerant condenser module in a first embodiment,

2 a first perspective view of a base plate with a holding part of the refrigerant condenser module according to 1 .

3 a greatly simplified longitudinal section of the refrigerant condenser module in a second embodiment and

4 a horizontal section of a second, central base plate of the refrigerant condenser module according to 3 ,

An in 1 illustrated refrigerant condenser module 1 includes a heat exchanger 2 as a condenser, a collection container 14 and a base plate 21 , The heat exchanger 2 is designed in a stacked disk design and has a plurality of stacked disks arranged one above the other 3 on. At the topmost stacking disc 3 is an upper cover plate 4 on and at the bottom stacking disc 3 is a lower cover plate 5 on. Between the stacking discs 3 Thus, a refrigerant channel for the passage of refrigerant and a coolant channel for the passage of coolant are formed (not shown). The stacking discs 3 as well as the upper and lower cover plate 4 . 5 have openings through which the refrigerant and the coolant can flow. Through a refrigerant inlet 6 is at a refrigerant inlet port 7 the refrigerant from a compressor, for example a compressor (not shown), to the heat exchanger 2 passed and at a refrigerant outlet 8th with a refrigerant outlet 9 again from the heat exchanger 2 discharged. Through a coolant inlet 10 at a coolant inlet port 11 is coolant in the heat exchanger 2 introduced and through a coolant outlet 12 on a coolant outlet 13 is coolant from the heat exchanger 2 discharged. In the heat exchanger 2 is at the refrigerant inlet port 6 gaseous refrigerant introduced and in the heat exchanger 2 cooled or condensed, so that at the refrigerant outlet 8th liquid refrigerant from the heat exchanger 2 exit. For this purpose, heat is transferred from the refrigerant to the coolant in the heat exchanger 2 transfer. As a coolant in this case a liquid, namely cooling liquid of a coolant circuit, preferably a low-temperature cooling circuit, an internal combustion engine, not shown, of a motor vehicle, not shown, is used. Inside the collection container 14 is hygroscopic material 15 arranged as a dryer, so that with the hygroscopic material 15 the refrigerant 16 within the collection container 14 can be dried.

The refrigerant condenser 1 is for an unillustrated motor vehicle air conditioning with the refrigerant condenser module 1 , an expansion valve, an evaporator and a compressor for forming a refrigerant circuit (not shown) used. In this case, the motor vehicle air conditioner on a housing within which the evaporator, a heater and a fan are present. The refrigerant condenser module 1 is arranged outside of this housing within an engine compartment of the motor vehicle. By means not shown coolant lines while the refrigerant condenser is connected to the compressor and the expansion valve.

That from the heat exchanger 2 effluent refrigerant is passed through a first refrigerant transfer passage 17 , which according to the first embodiment in 1 through a transfer pipe 18 is formed in the collection container 14 initiated. From the collection container 14 the refrigerant is discharged from a sump refrigerant outlet port 19 to a sump refrigerant outlet port 20 discharged. Here are the heat exchanger 2 and the collection container 14 side by side on the base plate 21 attached. The heat exchanger 2 is on the base plate 21 soldered and the collection container 14 is with a screw connection 25 detachable with the base plate 21 connected.

A holding part 26 as a plate 27 has holes 30 as a fastener 29 on. In the holes 30 screws or rivets or clips can be inserted and this can be the holding part 26 be attached to a motor vehicle, for example, the body of the motor vehicle. Here is the holding part 26 and the base plate 21 formed in one piece as a component ( 2 ). The base plate 21 and the holding part 26 are by means of a bend 28 connected with each other.

The heat exchanger 2 , the collecting container 14 and the base plate 21 consist essentially of aluminum or steel.

In 3 and 4 is a second embodiment of the refrigerant condenser module 1 shown. In the following, essentially only the differences from the first embodiment will be according to FIG 1 described. The refrigerant condenser module 1 includes a first topmost baseplate 22 , a second middle base plate 23 and a lower, third base plate 24 , The three base plates 22 . 23 and 24 are connected to each other by soldering. At the middle base plate 23 are two slots 33 educated. Further, the first, uppermost base plate 22 at the refrigerant outlet port 8th of the heat exchanger 2 an opening on, so that from the heat exchanger 2 at the refrigerant outlet port 8th escaping refrigerant through this opening on the first base plate 22 in the first refrigerant transfer channel 17 can flow in, which is between the first and third base plate 22 . 24 at the slot 33 formed. Through this first refrigerant transfer channel 17 ( 3 . 4 ), the refrigerant flows through a sump refrigerant inlet port 34 in the collection container 14 one. The second base plate 23 is also with another slot 33 Mistake. The further slot 33 is in 4 shown below and due to the sectioning in 3 not visible. This second slot 33 forms between the first and second base plate 22 . 24 a second refrigerant transfer passage 32 out. From the sump refrigerant outlet 19 the refrigerant flows out of the sump 14 off and is through the second refrigerant transfer passage 32 to a supercooling heat exchanger 31 directed.

The subcooled heat exchanger 31 is analogous to the heat exchanger 2 in stacked disc design with stacking discs 3 educated. The coolant flows through a coolant inlet opening 10 at a coolant inlet port 11 in the subcooler heat exchanger 31 one. After flowing through the subcooled heat exchanger 31 is through each one opening in the three base plates 22 . 23 . 24 the coolant in the heat exchanger 2 introduced and flows out of this from the coolant outlet 12 out again. The through the second refrigerant transfer channel 32 from the collection container 14 discharged refrigerant is not at a 3 illustrated refrigerant inlet opening 6 of the supercooled heat exchanger 31 in the subcooler heat exchanger 31 initiated, in the subcooler heat exchanger 31 further cooled below a saturation temperature and occurs at the refrigerant outlet 8th again from the supercooled heat exchanger 31 out. At the refrigerant outlet 9 of the supercooled heat exchanger 31 the exiting refrigerant is passed through a refrigerant line, not shown, to an expansion valve of the motor vehicle air conditioning system, not shown.

In the second refrigerant transfer channel 32 between the first and third base plates 22 . 24 thus discharges the sump refrigerant outlet 19 through which the refrigerant in the second refrigerant transfer passage 32 is introduced and through a in the second refrigerant transfer channel 32 opening subcooler heat exchanger refrigerant inlet 35 the refrigerant flows into the subcooled heat exchanger 31 one.

At the in 3 illustrated second embodiment of the refrigerant condenser module 1 has the middle base plate 23 the holding part 26 on, that is, the holding part 26 and the middle base plate 23 are integrally formed as a component. At the first and third base plate 22 . 24 is not a holding part 26 available.

In a further, not shown embodiment, the refrigerant condenser module 1 like that in 3 dargstellte second embodiment, however, formed without the supercooling heat exchanger 1 ,

In an additional, not shown embodiment of the refrigerant condenser module 1 are on three superimposed base plates 22 . 23 and 24 at the top of the first base plate 22 according to the second embodiment of the heat exchanger 2 arranged and according to the second embodiment of the third base plate 24 Below the subcooled heat exchanger 31 arranged. This ends in this embodiment, not shown, in contrast to the embodiment according to 3 , the collecting container 14 not at the bottom of the first base plate 22 but in the region of the lower end of the supercooled heat exchanger 31 , For this purpose, the collection container 14 either at the edge with the three base plates 22 . 23 and 24 connected or the three base plates 22 . 23 . 24 are partially in a recess of the collection container 14 arranged and thus with the sump 14 connected.

Overall, are considered with the refrigerant condenser module according to the invention 1 significant benefits. The heat exchanger 2 is designed in stacking disc design and the stacking discs 3 are connected with soldering. It also the heat exchanger 2 and the collection container 14 with at least one base plate 21 be connected by a solder joint with this, so in a simple manner with only a single manufacturing step, both the sump 14 and the heat exchanger 2 with the base plate 21 can be connected by soldering. Hereby, when using two base plates 21 also the required first and optional second refrigerant transfer channel 17 . 32 when integrated into at least two base plates 21 also be made with soldering by using the at least two base plates 21 be soldered together in the same manufacturing step. The holding part 26 is as a single component of the base plate 21 made, so also for the production of the holding part 26 no additional manufacturing steps are required after soldering the at least one base plate 21 of the heat exchanger 2 and the collection container 14 and the optional supercooled heat exchanger 31 in a soldering oven.

LIST OF REFERENCE NUMBERS

1

Refrigerant condenser module

2

Heat exchanger

3

The stacked-plate

4

Upper cover plate

5

Lower cover plate

6

Refrigerant inlet port

7

Refrigerant inlet port

8th

refrigerant outlet port

9

Kältemittelauslassstutzen

10

Coolant inlet port

11

Coolant inlet port

12

coolant outlet

13

Kühlmittelauslassstutzen

14

Clippings

15

Hygroscopic material

16

refrigerant

17

First refrigerant transfer channel

18

Transfer pipe

19

Collecting-refrigerant outlet port

20

Header Kältemittelauslassstutzen

21

baseplate

22

First base plate

23

Second middle base plate

24

Third base plate

25

screw

26

holding part

27

plate

28

bend

29

fastener

30

drilling

31

Supercooling heat exchanger

32

Second refrigerant transfer channel

33

Slot in second, middle base plate

34

Collecting refrigerant inlet port

35

Under cooling heat exchanger refrigerant inlet port

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102004044861 A1 [0003]
• WO 2004/042293 A1 [0004]

Claims (10)

Refrigerant Condenser Module ( 1 ) for the condensation of refrigerant for an automotive air conditioning system, comprising - a heat exchanger ( 2 ) as a condenser with a refrigerant inlet opening ( 6 ), a refrigerant outlet ( 8th ), a coolant inlet opening ( 10 ) and a coolant outlet ( 12 ), where - the heat exchanger ( 2 ) has a refrigerant passage and a coolant passage for passing refrigerant through the refrigerant passage and coolant through the coolant passage for transferring heat from the refrigerant to the coolant, 14 ) for the refrigerant, - a first refrigerant transfer channel ( 17 ) for conducting the refrigerant from the heat exchanger ( 2 ) in the collecting container ( 14 ), - one at the collecting container ( 14 ) formed sump refrigerant outlet port ( 19 ) for discharging the refrigerant from the collecting container ( 14 ), characterized in that the heat exchanger ( 2 ) and the collecting container ( 14 ) with at least one base plate ( 21 ) are mechanically interconnected. Refrigerant condenser module according to claim 1, characterized in that the at least one base plate ( 21 ) with at least one holding part ( 26 ) for fixing the refrigerant condenser module ( 1 ) is provided on a motor vehicle, in particular a body of the motor vehicle. Refrigerant condenser module according to claim 2, characterized in that the holding part ( 26 ) and a base plate ( 21 ) are integrally formed and / or the holding part ( 26 ) and the base plate ( 21 ) with a bend ( 28 ), z. B. with a Kröpfungswinkel of substantially 90 °, are interconnected and / or the holding part ( 26 ) at least one fastening means ( 29 ), z. B. a bore, a screw, a rivet or a hook, and / or the holding part ( 26 ) is formed as at least one plate, at least one web or at least one rod. Refrigerant condenser module according to one or more of the preceding claims, characterized in that when mounting the refrigerant condenser module ( 1 ) on the motor vehicle the at least one base plate ( 21 ) is oriented substantially horizontally. Refrigerant condenser module according to one or more of the preceding claims, characterized in that the collecting container ( 14 ) and / or the heat exchanger ( 2 ) on an upper side of the base plate ( 21 ) is arranged and / or fixed and / or the collecting container ( 14 ) and the heat exchanger ( 2 ) are arranged side by side. Refrigerant condenser module according to one or more of the preceding claims, characterized in that the refrigerant condenser module ( 1 ) a subcooled heat exchanger ( 31 ) for cooling the refrigerant with the coolant and a second refrigerant transfer channel ( 32 ) for conducting the refrigerant from the collecting container ( 14 ) in the supercooling heat exchanger ( 31 ). Refrigerant condenser module according to one or more of the preceding claims, characterized in that the heat exchanger ( 2 ) and / or the supercooling heat exchanger ( 31 ) are designed in stacked disk construction and preferably stacking disks ( 3 ) of the heat exchanger and / or the supercooled heat exchanger ( 31 ) are soldered together. Refrigerant condenser module according to one or more of the preceding claims, characterized in that the heat exchanger ( 2 ) and / or the supercooling heat exchanger ( 31 ) to at least one base plate ( 21 ) is soldered to / or the heat exchanger ( 2 ) and / or the supercooling heat exchanger ( 31 ) with the at least one base plate ( 21 ) is detachably connected, for example with a screw or rivet connection ( 25 ). Refrigerant condenser module according to one or more of the preceding claims, characterized in that the collecting container ( 14 ) on at least one base plate ( 21 ) detachable, z. B. with a screw or rivet connection ( 25 ), or the collecting container ( 14 ) to at least one base plate ( 21 ) is soldered and / or the first and / or second refrigerant transfer channel ( 17 . 32 ) with a transfer tube ( 18 ) is formed and / or in at least two base plates ( 21 ), in particular two or three base plates ( 21 ) is integrated and / or within the collecting container ( 14 ) Hygroscopic material is arranged as a dryer and / or a filter and / or the coolant is a liquid. Automotive air conditioning system with a refrigerant condenser module ( 1 ), an expansion valve, an evaporator and a compressor for forming a refrigeration circuit, characterized in that the refrigerant condenser module ( 1 ) as a refrigerant condenser module ( 1 ) is formed according to one or more of the preceding claims.

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